JP7101607B2 - Working equipment - Google Patents

Description

The present invention relates to a working device that sprinkles a basic material that is a base on which a U-shaped member is installed.

In construction work and road work, a ditch for draining rainwater may be formed in the ground. When forming such a groove, first, the ground is excavated in a groove shape, and then a plurality of U-shaped members having a U-shaped cross section are installed side by side on the bottom surface of the excavation. Since the U-shaped member is a heavy object made of concrete, it has been proposed to install it using a heavy machine such as a backhoe (Patent Document 1).

Patent Document 1 discloses a method in which a U-shaped member is lifted via a wire connected to a tip end portion of a backhoe arm and lowered onto the bottom surface of excavation for installation. A groove is formed by sequentially installing a plurality of U-shaped members from the starting point side to the ending point side of the groove.

Japanese Unexamined Patent Publication No. 2017-25633

After excavating the ground in a groove shape and before installing the U-shaped member, it is necessary to lay a foundation material mixed with, for example, sand and cement on the bottom of the excavation in advance. The laying of the foundation material is carried out by sprinkling and leveling the foundation material. These operations are generally performed by workers. Therefore, there is a problem that the productivity of the laying work of the foundation material is low.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a working device capable of improving the workability of the work of laying a foundation material.

A work device for sprinkling a base material on which a U-shaped member according to the present invention is installed, a main body portion, a hopper provided in the main body portion for sprinkling the basic material, and a hopper provided in the main body portion. An existing part that is installed at the frontmost position in the installation direction by grasping and lowering a leveling part that smoothes the basic material sprinkled from the hopper, a traveling mechanism that runs the main body part, and an uninstalled U-shaped member. It is provided with an installation mechanism to be installed adjacent to the U-shaped member of the above .

According to the present invention, the workability of the work of laying the foundation material can be improved.

It is a schematic diagram which shows the structure of the U-shaped member installation system which concerns on embodiment of this invention. It is a perspective view which shows the structure of the U-shaped member installation apparatus. It is a rear view which shows the guided part guided by the existing U-shaped member. It is a side view which shows the installation mechanism. It is a front view which shows the 1st movable frame, the 2nd movable frame, and the left-right moving part of an installation mechanism. It is a top view which shows the 2nd movable frame and the left-right moving part of an installation mechanism. It is a schematic diagram which shows the height adjustment mechanism and the like. It is a side view which shows the state before running the main body part. It is a side view which shows the state after running the main body part. It is a side view which shows the state which the installation mechanism grips the uninstalled U-shaped member transferred to a predetermined position. It is a side view which shows the state which moved the U-shaped member which has not been installed with an installation mechanism to a desired horizontal position. It is a side view which shows the state which the installation mechanism lowered and installed the U-shaped member which has not been installed. It is a side view which shows the modification of the U-shaped member installation apparatus. It is a front schematic diagram which shows the installation mechanism of the modification.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the present specification, the same members are designated by the same reference numerals throughout the specification.

[U-shaped member installation system]
First, the U-shaped member installation system 100 according to the embodiment of the present invention will be described with reference to FIG. FIG. 1 is a schematic view showing the configuration of a U-shaped member installation system 100.

When forming a groove in the ground 1, first, a backhoe (not shown) is used to excavate the ground 1 in a groove shape to form a depression 2. Next, the crushed stone 3 is laid on the bottom surface of the depression 2. Next, using the U-shaped member installation system 100, a foundation material 4 (for example, a mixture of sand, cement, etc.) as a base on which the U-shaped member 5 is installed is laid on the crushed stone 3, and a plurality of U-shaped members are laid. The character member 5 is installed in series on the base material 4. The U-shaped member 5 is a heavy object made of precast concrete having a U-shaped cross section, and is installed on the foundation material 4 by using the U-shaped member installation system 100. After that, the adjacent U-shaped members 5 are continuously installed, but the space between the adjacent U-shaped members 5 is filled with mortar, and the space between the side surface of the recess 2 and the U-shaped member 5 is filled with soil. Return (not shown). The groove is completed by the above procedure. The U-shaped member 5 has a pair of side wall portions 51 and 52 and a bottom portion 53 connecting the lower end portions of the pair of side wall portions 51 and 52.

In the present embodiment, the longitudinal direction of the existing U-shaped member 5 installed on the base material 4 is the front-rear direction (that is, the direction along the X-axis in the figure), and the width direction thereof is the left-right direction (that is, the figure). In the middle, the direction along the Y axis), and the height direction thereof is the vertical direction (that is, the direction along the Z axis in the figure).

In the present embodiment, the installation direction in which the plurality of U-shaped members 5 are installed is the front-rear direction. That is, the plurality of U-shaped members 5 are installed in a straight line extending in the front-rear direction, but the present invention is not limited to this, and may be installed, for example, in a polygonal line or a curved line. As described above, the installation direction in which the U-shaped member 5 is installed is not necessarily linear.

As shown in FIG. 1, the U-shaped member installation system 100 includes a U-shaped member installation device 6 for installing the U-shaped member 5 in a groove, and a U-shaped member installation device 6 for installing an uninstalled U-shaped member 5. It is provided with a vehicle 7 as a transport device for transporting the U-shaped member, and a total station 8 as a light wave surveying instrument or the like for measuring the position of a grip portion 644c (see FIG. 2) described later of the U-shaped member installation device 6. The details of the U-shaped member installation device 6 will be described later.

The vehicle 7 conveys a mounting portion 71 on which a plurality of U-shaped members 5 are mounted and an uninstalled U-shaped member 5 mounted on the mounting portion 71 to the U-shaped member installation device 6. It is a truck having a crane unit 72. In the present embodiment, the transport device is composed of the vehicle 7, but is not limited to this, and may be configured by, for example, a backhoe.

The total station 8 irradiates light waves toward a prism or the like (not shown) attached to the grip portion 644c or the non-installed U-shaped member 5 gripped by the grip portion 644c, and receives the light waves reflected by the prism or the like. Thereby, the horizontal position of the uninstalled U-shaped member 5 gripped by the grip portion 644c can be measured.

[U-shaped member installation device]
Next, the U-shaped member installation device 6 will be described with reference to FIGS. 2 and 3. FIG. 2 is a perspective view showing the configuration of the U-shaped member installation device 6. FIG. 3 is a rear view showing a guided portion 613 guided by the existing U-shaped member 5.

As shown in FIG. 2, the U-shaped member installation device 6 is a device for continuously installing the U-shaped member 5 on the existing U-shaped member 5. In the U-shaped member installation device 6, the main body portion 61 guided over the existing U-shaped member 5 and the main body portion 61 are installed along the existing U-shaped member 5 in the installation direction (that is, in the traveling direction). A traveling mechanism 62 for traveling, a transfer mechanism 63 for transferring an uninstalled U-shaped member 5 mounted on the main body 61 along the main body 61, and an uninstalled transfer mechanism 63 transferred to a predetermined position by the transfer mechanism 63. The U-shaped member 5 is gripped and lowered, and is provided with an installation mechanism 64 which is installed adjacent to the existing U-shaped member 5 installed at the frontmost position in the installation direction.

As a result, the main body 61 travels in the installation direction along the existing U-shaped member 5 by the traveling mechanism 62, so that the main body 61 is driven in the installation direction by using the existing U-shaped member 5. Can be done. Further, the uninstalled U-shaped member 5 transferred to a predetermined position by the transfer mechanism 63 is gripped and lowered by the installation mechanism 64, and is attached to the existing U-shaped member 5 installed at the frontmost position in the installation direction. Since they are installed adjacent to each other, the U-shaped member 5 can be continuously installed on the existing U-shaped member 5 with good workability. The length of the existing U-shaped member 5 guided by the main body 61 in the longitudinal direction is longer, the more stable the traveling by the traveling mechanism 62 is. Therefore, it is preferable to use a plurality of existing U-shaped members 5.

Further, the U-shaped member installation device 6 further includes a foundation material laying mechanism 65 as a work device for laying the foundation material 4 as a base on which the U-shaped member 5 is installed.

As described above, the U-shaped member installation device 6 includes an installation mechanism 64 for installing the U-shaped member 5 and a basic material laying mechanism 65 for laying the basic material 4 as a base on which the U-shaped member 5 is installed. Therefore, all the steps of installing the U-shaped member 5 and laying the base material 4 performed before the step of installing the U-shaped member 5 are performed by the single U-shaped member installing device 6. This makes it possible to improve the workability of the work of installing the U-shaped member 5, including the step of installing the U-shaped member 5 and the process of laying the basic material 4. Further, the accuracy of the installation position of the U-shaped member 5 can be improved.

The main body 61 has a pair of base frames 611 extending in parallel in the traveling direction and two connection frames 612 (612a, 612b) for connecting the pair of base frames 611.

The pair of base frames 611 are provided at intervals larger than the width of the U-shaped member 5 in the left-right direction (that is, the dimension from one end of the U-shaped member 5 to the other end of the U-shaped member 5). Be done. As a result, the pair of base frames 611 protrudes from the pair of side wall portions 51 and 52 of the existing U-shaped member 5 in a state where the main body portion 61 is guided over the existing U-shaped member 5. ing. The two connecting frames 612 (612a, 612b) are provided on the front end side of the main body 61 in the traveling direction.

The rear portion of the main body 61 in the traveling direction is supported by the existing U-shaped member 5. Specifically, the rear portion of the main body portion 61 in the traveling direction is supported by the existing U-shaped member 5 via the guided portion 613 that is rotatably abutted against the existing U-shaped member 5 and guided. .. As a result, the main body portion 61 is guided by the existing U-shaped member 5 by the guided portion 613, so that the main body portion 61 travels along the existing U-shaped member 5 by the traveling mechanism 62.

As shown in FIGS. 2 and 3, the guided portion 613 includes a rod 613a rotatably supported by the pair of base frames 611 and a pair of side wall portions 51 of the existing U-shaped member 5 provided on the rod 613a. , 52 has a pair of rubber cylindrical rollers 613b that roll on the upper end.

The rod 613a extends in the left-right direction, and both ends thereof are supported by a pair of base frames 611. Further, the rod 613a is supported by a pair of side wall portions 51 and 52 of the existing U-shaped member 5 via a pair of cylindrical rollers 613b. As a result, the main body portion 61 is supported by the pair of side wall portions 51 and 52 of the existing U-shaped member 5 via the rod 613a of the guided portion 613 and the cylindrical roller 613b.

On the facing side surfaces of the pair of cylindrical rollers 613b, a pair of flanges 613c capable of contacting the inner surfaces of the pair of side wall portions 51 and 52 of the existing U-shaped member 5 are provided. The pair of flanges 613c is sandwiched between the pair of side wall portions 51 and 52 of the existing U-shaped member 5. As a result, the movement of the flange 613c with respect to the existing U-shaped member 5 in the left-right direction is restricted, so that the cylindrical roller 613b falls off from the upper ends of the pair of side wall portions 51 and 52 of the existing U-shaped member 5. It is guided so that it can be rolled without any need.

In the present embodiment, the guided portion 613 does not have a motor for rotationally driving the rod 613a, but is not limited to this, and may have, for example, a motor for rotationally driving the rod 613a. In this case, the motor is provided on either one of the pair of base frames 611.

Further, in the present embodiment, the guided portion 613 has a pair of cylindrical rollers 613b arranged at intervals in the left-right direction, but the present invention is not limited to this, and for example, a U-shaped member in the left-right direction. It may have one cylindrical roller extending from one end of the 5 to the other end of the U-shaped member 5.

Further, in the present embodiment, the pair of flanges 613c abuts on the inner surface of the pair of side wall portions 51 and 52 of the existing U-shaped member 5 and is sandwiched between the pair of side wall portions 51 and 52 of the U-shaped member 5. However, the present invention is not limited to this, and for example, the pair of side wall portions 51 of the U-shaped member 5 abuts on the outer surfaces of the pair of side wall portions 51 and 52 of the existing U-shaped member 5. , 52 may be sandwiched between them. In this case, the pair of flanges 613c are provided on the non-opposing side surfaces of the pair of cylindrical rollers 613b.

From the viewpoint of supporting the front portion of the main body 61 in the traveling direction, the traveling mechanism 62 is provided in the front portion of the main body 61 in the traveling direction. In the present embodiment, the traveling mechanism 62 is directly provided in the traveling direction front portion of the main body portion 61, but is not limited to this, and is not limited to this, for example, the traveling direction of the main body portion 61 is indirectly provided via another member. It may be provided in the front portion.

As shown in FIG. 2, the traveling mechanism 62 has a pair of first support portions 621 extending downward from a connection frame 612a arranged in front of the traveling direction, and a pair of first support portions 621 on the tip end side. It has a wheel 622 that is rotatably supported (on the lower end side), and a motor 623 that is provided on one of a pair of first support portions 621 and that rotationally drives the wheel 622.

The wheel 622 supports the front portion of the main body 61 in the traveling direction. As a result, the front portion in the traveling direction and the rear portion in the traveling direction of the main body 61 are supported by the wheels 622 of the traveling mechanism 62 and the existing U-shaped member 5, respectively. Therefore, the main body portion 61 is supported and travels in a well-balanced manner, and the U-shaped member 5 can be installed.

The wheels 622 are provided in front of the hopper 66, which will be described later, of the foundation material laying mechanism 65 in the traveling direction. As a result, since the wheel 622 rotates on the crushed stone 3 before the foundation material 4 is sprinkled from the hopper 66, it is surely avoided that the wheel 622 rotates on the foundation material 4. Further, since the wheels 622 are arranged between the pair of base frames 611, the dimensions of the U-shaped member installation device 6 in the left-right direction are smaller than those in which the wheels project outward from the pair of base frames 611. It can be suppressed.

In the present embodiment, the wheels 622 are arranged between the pair of base frames 611, but are not limited to this, and may be arranged outside the pair of base frames 611, for example. In this case, it is possible to prevent the U-shaped member installation device 6 from tipping over in the left-right direction due to vibration or the like.

The transfer mechanism 63 is provided in the rear portion of the main body 61 in the traveling direction, and transfers the uninstalled U-shaped member 5 conveyed by the crane portion 72 of the vehicle 7 from the rear side in the traveling direction to the front side in the traveling direction. be. The transfer mechanism 63 is located in front of the guided portion 613 in the traveling direction. In other words, the guided portion 613 is located behind the transfer mechanism 63 in the traveling direction. As a result, it is possible to prevent the transfer of the uninstalled U-shaped member 5 by the transfer mechanism 63 from being hindered by the guided portion 613.

The transfer mechanism 63 has a plurality of rods 631 rotatably supported by a pair of base frames 611, a rubber cylindrical roller 632 provided on each rod 631, and a rod 631 built in the base frame 611 to rotate and drive each rod 631. It has a motor (not shown).

The plurality of rods 631 are arranged at predetermined intervals in the front-rear direction. Further, the plurality of rods 631 extend in the left-right direction like the rods 613a, and both ends thereof are supported by the pair of base frames 611. An uninstalled U-shaped member 5 is placed on the plurality of cylindrical rollers 632.

In the present embodiment, the cylindrical roller 632 is formed by one having a large axial dimension. However, the cylindrical roller 632 is not limited to the above-mentioned form, and may be formed by, for example, a plurality of rollers having small axial dimensions. The cylindrical roller 632 is arranged between the pair of cylindrical rollers 613b in the left-right direction. As a result, the cylindrical roller 632 is surely prevented from coming into contact with the pair of side wall portions 51 and 52 of the existing U-shaped member 5.

The plurality of rods 631 are the existing U-shaped member 5 in a state where the traveling direction front portion of the main body portion 61 and the traveling direction rear portion of the main body portion 61 are supported by the traveling mechanism 62 and the existing U-shaped member 5, respectively. Does not abut on the pair of side wall portions 51, 52. This prevents the plurality of rods 631 from coming into contact with the pair of side wall portions 51 and 52 of the existing U-shaped member 5 and being worn. Therefore, the rotational drive of the plurality of rods 631 is not hindered by the existing U-shaped member 5, and energy saving of the motor for rotationally driving each rod 631 can be achieved.

In this way, the plurality of rods 631 are rotated by the rotational drive of the motor, and the uninstalled U-shaped member 5 mounted on the plurality of rods 631 via the cylindrical roller 632 is moved from the rear side in the traveling direction to the front in the traveling direction. Can be transferred to the side.

The pair of base frames 611 are provided with a movement restricting portion 614 for restricting the movement of the uninstalled U-shaped member 5 mounted on the main body portion 61 in the left-right direction. Therefore, the uninstalled U-shaped member 5 is transferred to a predetermined position (the most front side in the traveling direction of the transfer mechanism 63) by the transfer mechanism 63 without the position in the left-right direction being significantly deviated by the movement restricting unit 614. To.

An opening 615 located in front of the transfer mechanism 63 in the traveling direction is formed in the main body 61. The opening 615 is formed by being surrounded by a pair of base frames 611, a rod 631 arranged at the frontmost position in the traveling direction, and a connecting frame 612b arranged behind the traveling direction. The uninstalled U-shaped member 5 can pass through the opening 615 in the vertical direction. As a result, the uninstalled U-shaped member 5 is gripped by the installation mechanism 64, passes through the opening 615, descends, and is adjacent to the existing U-shaped member 5 installed at the frontmost position in the installation direction. It is installed.

Next, the installation mechanism 64 will be described with reference to FIGS. 2 and 4 to 6. FIG. 4 is a side view showing the installation mechanism 64. FIG. 5 is a front view showing the first movable frame 642, the second movable frame 643, and the left-right moving portion 644 of the installation mechanism 64. FIG. 6 is a top view showing the second movable frame 643 and the left-right moving portion 644 of the installation mechanism 64.

As shown in FIG. 2, the installation mechanism 64 is provided on the main body 61 along the installation direction over the opening 615 and the front portion of the transfer mechanism 63 in the traveling direction. That is, the moving mechanism 63 is provided behind the installation mechanism 64 of the main body 61 in the installation direction. In this case, a part of the transfer mechanism 63 in front of the installation direction and a part of the installation mechanism 64 in the rear of the installation direction partially overlap with each other along the installation direction. The installation mechanism 64 includes a fixed frame 641 fixed on the main body 61, a pair of left and right first movable frames 642 that are supported by the fixed frame 641 that can be moved in the installation direction, and a pair of left and right that can be raised and lowered in the vertical direction. It has a second movable frame 643 supported by the first movable frame 642, and a left-right moving portion 644 supported by the second movable frame 643 so as to be movable in the left-right direction.

The fixed frame 641 is provided so that a part thereof overlaps with the transfer mechanism 63 along the installation direction. The fixed frame 641 is provided above the pair of lower fixed frames 641a fixed on the pair of base frames 611 so as to extend in the installation direction and the pair of lower fixed frames 641a so as to extend in the installation direction. It has a pair of upper fixed frames 641b and a connecting frame 641c for connecting a pair of lower fixed frames 641a and a pair of upper fixed frames 641b.

As shown in FIG. 4, a first straight guide groove 641d extending in the installation direction is formed on the upper surface of the lower fixed frame 641a facing the upper fixed frame 641b. Inside the lower fixing frame 641a, a first feed screw 641e extending in the installation direction is rotatably supported. One end of the first feed screw 641e is connected to the shaft of the first motor 641f fixed to one end of the lower fixing frame 641a. As a result, the first motor 641f can rotationally drive the first feed screw 641e.

Similarly, a first straight guide groove 641d extending in the installation direction is formed on the lower surface of the upper fixed frame 641b facing the lower fixed frame 641a. Inside the upper fixing frame 641b, a first feed screw 641e extending in the installation direction is rotatably supported. One end of the first feed screw 641e is connected to the shaft of the first motor 641f fixed to one end of the upper fixing frame 641b. As a result, the first feed screw 641e is rotationally driven by the drive of the first motor 641f.

The connecting frame 641c is provided so as to extend in the vertical direction, and one end (lower end) and the other end (upper end) thereof are connected to the end of the lower fixed frame 641a and the end of the upper fixed frame 641b, respectively. To.

The pair of left and right first movable frames 642 are connected to the first nut 642a extending in the installation direction and screwed into the first feed screw 641e, and to the first nut 642a extending in the installation direction. It has a first slider 642b guided by a first straight guide groove 641d, and a pair of vertical frames 642c whose ends are connected to the end of the first slider 642b in the installation direction and extend in the vertical direction.

When the first feed screw 641e is rotationally driven by the drive of the first motor 641f, the first nut 642a connected to the first slider 642b guided by the first straight guide groove 641d is installed integrally with the vertical frame 642c. Move along the direction. As a result, the pair of left and right first movable frames 642 move in the installation direction with respect to the fixed frame 641.

In the present embodiment, the first movable frame 642 can be moved in the installation direction with respect to the fixed frame 641 by the combination of the first feed screw 641e, the first nut 642a, and the first motor 641f. , Hydraulic jacks or electric jacks may be used. In this case, one end and the other end of the hydraulic jack or the electric jack are connected to the first movable frame 642 and the fixed frame 641, respectively, and the first movable frame 642 is attached to the fixed frame 641 by the expansion and contraction of the hydraulic jack or the electric jack. Can move in the installation direction.

In this way, since the first movable frame 642 is movably supported by the fixed frame 641 in the installation direction, the position of the gripped uninstalled U-shaped member 5 in the installation direction can be adjusted. As a result, the U-shaped member 5 can be installed with high accuracy in succession to the existing U-shaped member 5.

Therefore, the position in the installation direction of the uninstalled U-shaped member 5 supported by the pair of left and right first movable frames 642 via the second movable frame 643 and the left / right moving portion 644 is adjusted. That is, the installation direction position adjusting mechanism for adjusting the position of the gripped non-installed U-shaped member 5 in the installation direction includes the first straight guide groove 641d, the first feed screw 641e, and the first motor 641f of the fixed frame 641. , A first nut 642a of the first movable frame 642, a first slider 642b, and a vertical frame 642c.

As shown in FIG. 5, a second straight guide groove 642d extending in the vertical direction is formed on the inner side surfaces of the left and right vertical frames 642c facing each other. Inside the vertical frame 642c, a second feed screw 642e extending in the vertical direction is rotatably supported. One end of the second feed screw 642e is connected to the shaft of the second motor 642f fixed to one end of the vertical frame 642c. As a result, the second feed screw 642e is rotationally driven by the drive of the second motor 642f.

As shown in FIGS. 2 and 5, the second movable frame 643 is connected to the second nut 643a screwed into the second feed screw 642e and guided to the second straight guide groove 642d by the second nut 643a. It has a second slider 643b and a horizontal frame portion 643f including a pair of first horizontal frames 643c extending in the left-right direction and having an end connected to the second slider 643b.

When the second feed screw 642e is rotationally driven by the drive of the second motor 642f, the second nut 643a connected to the second slider 643b guided by the second straight guide groove 642d is integrally with the horizontal frame portion 643f. Move along the vertical direction. As a result, the second movable frame 643 moves in the vertical direction with respect to the pair of left and right first movable frames 642.

In the present embodiment, the second feed screw 642e, the second nut 643a, and the second motor 642f make it possible to move the second movable frame 643 in the vertical direction with respect to the pair of left and right first movable frames 642. A combination of an electric winch and a wire rope may be used instead of the combination of. In this case, one end and the other end of the wire rope are connected to the electric winch and the second movable frame 643 provided in the first movable frame 642, respectively, and the second movable is performed by winding or unwinding the electric winch with respect to the wire rope. The frame 643 can move in the vertical direction with respect to the pair of left and right first movable frames 642.

In this way, since the second movable frame 643 is supported by the first movable frame 642 so as to be able to move up and down in the vertical direction, the gripped non-installed U-shaped member 5 is lowered by the second movable frame 643. It is installed adjacent to the existing U-shaped member 5 installed at the frontmost position in the installation direction, and as a result, the U-shaped member 5 can be continuously installed on the existing U-shaped member 5 with good workability. ..

Therefore, the uninstalled U-shaped member 5 supported by the second movable frame 643 can be lowered via the left-right moving portion 644. That is, the elevating mechanism for lowering the gripped non-installed U-shaped member 5 includes the second straight guide groove 642d of the vertical frame 642c, the second feed screw 642e, the second motor 642f, and the second movable frame 643. It is composed of two nuts 643a, a second slider 643b, and a horizontal frame portion 643f.

As shown in FIGS. 2 and 6, the horizontal frame portion 643f extends in the left-right direction with a pair of second horizontal frames 643d extending in the installation direction and connecting the ends of the pair of first horizontal frames 643c. Further includes a pair of third horizontal frames 643e provided between the pair of first horizontal frames 643c. On the facing surface side of the pair of third horizontal frames 643e, a third straight guide groove 643 g as a guide portion extending in the left-right direction is formed. Inside the third horizontal frame 643e, a third feed screw 643h extending in the left-right direction is rotatably supported. One end of the third feed screw 643h is connected to the shaft of the third motor 643i fixed to one end of the second horizontal frame 643d. As a result, the third feed screw 643h is rotationally driven by the drive of the third motor 643i.

As shown in FIGS. 2 and 6, the left-right moving portion 644 is a slider connected to the third nut 644a screwed to the third feed screw 643h and guided to the third straight guide groove 643g. It has a third slider 644b as a member, and a grip portion 644c that extends downward from the third slider 644b and grips an uninstalled U-shaped member 5.

As shown in FIG. 2, as an example of the grip portion 644c, there is an example having a grip portion main body 644d and a pair of gripping arms 644e provided on both left and right sides of the grip portion main body 644d so as to be movable in the left-right direction. The pair of gripping arms 644e moves outward along the left-right direction to stretch against the pair of side wall portions 51 and 52 of the U-shaped member 5. As a result, the gripping portion 644c can grip the U-shaped member 5. However, the grip portion 644c is not limited to this, and may be configured by other aspects.

When the third feed screw 643h is rotationally driven by the drive of the third motor 643i, the third nut 644a connected to the third slider 644b guided by the third straight guide groove 643g is integrally left and right with the grip portion 644c. Move along the direction. As a result, the left-right moving portion 644 moves in the left-right direction with respect to the second movable frame 643.

In the present embodiment, the left-right moving portion 644 can be moved in the left-right direction with respect to the second movable frame 643 by the combination of the third feed screw 643h, the third nut 644a, and the third motor 643f. Alternatively, a hydraulic jack or an electric jack may be used. In this case, one end and the other end of the hydraulic jack or the electric jack are connected to the left-right moving portion 644 and the second movable frame 643, respectively, and by expanding and contracting the hydraulic jack or the electric jack, the left-right moving portion 644 becomes the second movable frame 643. Can move in the left-right direction.

As described above, since the left-right moving portion 644 having the grip portion 644c is supported by the second movable frame 643 so as to be movable in the left-right direction, the left-right direction of the uninstalled U-shaped member 5 gripped by the grip portion 644c. As a result, the U-shaped member 5 can be continuously installed on the existing U-shaped member 5 with high accuracy.

Therefore, the position of the uninstalled U-shaped member 5 supported by the left-right moving portion 644 in the left-right direction is adjusted. That is, the left-right position adjusting mechanism for adjusting the left-right position of the gripped non-installed U-shaped member 5 is the third straight guide groove 643 g, the third feed screw 643 h, and the third motor of the third horizontal frame 643e. It is composed of 643i, a third nut 644a of the left-right moving portion 644, a third slider 644b, and a gripping portion 644c.

In this way, the installation mechanism 64 includes an installation direction position adjusting mechanism that adjusts the position of the gripped non-installed U-shaped member 5 in the installation direction, and an elevating / lowering mechanism that lowers the gripped non-installed U-shaped member 5. It is provided with a mechanism and a left-right direction position adjusting mechanism for adjusting the left-right position of the gripped non-installed U-shaped member 5.

Further, the installation direction position adjusting mechanism, the elevating mechanism, and the left-right direction position adjusting mechanism are not limited to this embodiment, and for example, at least one of them is configured to include a rack and a pinion that meshes with the rack. You may. In this case, the motor for rotationally driving the pinion is provided coaxially with the pinion.

Next, the foundation material laying mechanism 65 will be described with reference to FIGS. 2 and 7. FIG. 7 is a schematic view showing the height adjusting mechanism 69 and the like.

As shown in FIG. 2, the foundation material laying mechanism 65 is provided in front of the installation mechanism 64 in the traveling direction. As a result, before installing the uninstalled U-shaped member 5 adjacent to the existing U-shaped member 5 installed at the frontmost position in the installation direction by the installation mechanism 64, the foundation material 4 is previously installed by the foundation material laying mechanism 65. Can be laid on the crushed stone 3.

The foundation material laying mechanism 65 includes a hopper 66 provided in the main body 61 for sprinkling the stored foundation material 4 and a leveling portion 67 provided in the main body 61 for leveling the foundation material 4 sprinkled from the hopper 66. A rolling compaction portion 68 provided in the main body portion 61 for rolling the foundation material 4 leveled by the leveling portion 67, and a height adjusting mechanism 69 for adjusting the height of the leveling portion 67 are provided.

As a result, the basic material 4 is sprinkled from the hopper 66 while the main body 61 travels to the traveling mechanism from 62. Further, the foundation material 4 sprinkled from the hopper 66 is leveled by the leveling portion 67. Therefore, the workability of the work of laying the foundation material 4 can be improved. As a result, the foundation material 4 can be laid and the U-shaped member 5 can be installed integrally.

When the main body 61 is traveling, the hopper 66 sprinkles the basic material 4 stored in the hopper 66. The hopper 66 is provided on the main body 61 so as to be located between the pair of connection frames 612a and 612b. Therefore, the hopper 66 is located behind the wheel 622 in the traveling direction. That is, the wheel 622 is provided at a position in front of the hopper 66 in the traveling direction. As a result, the wheel 622 can travel on the crushed stone 3 before the foundation material 4 is laid, without traveling on the laid foundation material 4.

Further, in the hopper 66, a foundation material inlet 661 for charging the foundation material 4 is formed at the upper end thereof, and a foundation material discharge port 662 for discharging the foundation material 4 is formed at the lower end thereof. The base material discharge port 662 is formed so that its lateral dimension is larger than the lateral dimension of the bottom 53 of the U-shaped member 5. As a result, the foundation material 4 can be sprinkled over the entire area in the left-right direction in which the bottom of the U-shaped member 5 is installed.

In a state where the guided portion 613 is guided by the existing U-shaped member 5, the lower end portion of the base material discharge port 662 of the hopper 66 is arranged at a position higher than the bottom portion of the wheel 622. As a result, in a state where the guided portion 613 is guided by the existing U-shaped member 5, contact between the foundation material discharge port 662 and the crushed stone 3 can be avoided, and the material is discharged from the foundation material discharge port 662. The foundation material 4 can be reliably sprinkled onto the crushed stone 3.

The leveling portion 67 is provided behind the hopper 66 in the traveling direction. Therefore, the hopper 66 is arranged between the traveling mechanism 62 and the leveling portion 67 along the traveling direction. The leveling portion 67 has a pair of support arms 671 rotatably supported by the pair of base frames 611, and a soil removal plate 672 provided at the tip end portion (lower end portion) of the support arm 671.

The pair of support arms 671 is provided so that its base end portion (upper end portion) is pivotally supported by the pair of base frames 611. The soil removal plate 672 has a lower edge extending in the left-right direction. In a state where the guided portion 613 is guided by the existing U-shaped member 5, the lower edge of the soil discharge plate 672 is arranged at a position lower than the lower end portion of the foundation material discharge port 662. As a result, the soil removal plate 672 of the leveling portion 67 can reliably level the foundation material 4 sprinkled from the hopper 66.

The rolling compaction portion 68 is provided behind the leveling portion 67 in the traveling direction. As a result, the rolling section 68 can roll the foundation material 4 leveled by the leveling section 67. The rolling compaction portion 68 is rotatably provided on the tip end side (lower end side) of the pair of second support portions 681 extending downward from the pair of base frames 611 and the pair of second support portions 681. It has a pressure roller 682 and.

In a state where the guided portion 613 is guided by the existing U-shaped member 5, the bottom portion of the rolling roller 682 is located higher than the bottom portion of the wheel 622 and is located above the lower end portion of the base material discharge port 662. It is placed so that it is located in a low position. As a result, the compaction portion 68 can roll and compact the foundation material 4 sprinkled from the hopper 66 and leveled by the leveling portion 67.

In the present embodiment, the hopper 66, the leveling portion 67, and the rolling portion 68 are all provided directly on the main body portion 61, but the present invention is not limited to this, and for example, at least one of them is the other. It may be indirectly provided in the main body portion 61 via the member of the above.

As shown in FIG. 7, the height adjusting mechanism 69 is configured by a fluid pressure cylinder. The fluid pressure cylinder is connected to a pair of cylinder tubes 691 each built in a pair of second support portions 681, a piston 692 slidably supported by each cylinder tube 691, and a second support connected to each piston 692. It has a piston rod 693 that protrudes forward from the portion 681 in the traveling direction, and a connecting portion 694 that connects the tip end portion of the piston rod 693 and the support arm 671.

Since the connecting portion 694 extends in the left-right direction to connect the pair of support arms 671, the pair of support arms 671 can rotate integrally.

By expanding and contracting the fluid pressure cylinder, the support arm 671 rotates, and the height of the soil removal plate 672 is adjusted.

Even when the height of the soil removal plate 672 is adjusted to the highest position in the state where the guided portion 613 is guided by the existing U-shaped member 5, the lower edge of the soil removal plate 672 is the basic material. It is arranged at a position lower than the lower end of the discharge port 662. On the other hand, even when the height of the soil removal plate 672 is adjusted to the lowest position in the state where the guided portion 613 is guided by the existing U-shaped member 5, the lower edge of the soil removal plate 672 remains. It is located higher than the bottom of the wheel 622.

In this way, the height adjusting mechanism 69 can adjust the height of the soil removal plate 672 to a predetermined range, so that the basic material 4 sprinkled from the hopper 66 can be leveled to a desired height.

In the present embodiment, the height adjusting mechanism 69 includes a cylinder tube 691, a piston 692, a piston rod 693, and a connecting portion 694, but is not limited thereto, and for example, a support arm 671 is provided. It may be configured by a motor driven to rotate.

Since the foundation material laying mechanism 65 and the U-shaped member installation mechanism 64 are continuously arranged via the main body portion 61, the foundation material 4 is laid and the U-shaped member 5 is installed by traveling by the traveling mechanism 62. Is performed continuously.

[Process of laying foundation materials and process of transferring uninstalled U-shaped members]
Next, with reference to FIGS. 8 and 9, a step of laying the foundation material 4 by the foundation material laying mechanism 65 and a step of transferring the U-shaped member 5 not provided by the transfer mechanism 63 will be described. FIG. 8 is a side view showing a state before the main body 61 travels. FIG. 9 is a side view showing a state after the main body 61 has traveled.

In the step of laying the foundation material 4, the main body portion 61 travels by the traveling mechanism 62 on the front side in the traveling direction by a predetermined distance (dimensions in the longitudinal direction of the U-shaped member 5). That is, while the main body 61 travels from the state shown in FIG. 8 to the state shown in FIG. 9 by the traveling mechanism 62, the hopper 66 sprinkles the stored basic material 4 onto the crushed stone 3.

At that time, the soil discharge plate 672 whose height is adjusted by the height adjusting mechanism 69 evens out the foundation material 4 sprinkled from the hopper 66 to a desired height, and at the same time, the rolling roller 682 of the rolling portion 68. Rolls and compacts the base material 4 leveled by the leveling portion 67.

As described above, the step of laying the foundation material 4, that is, the step of sprinkling the foundation material 4 on the crushed stone 3 and leveling and rolling the foundation material 4 is not performed by the worker, and the main body 61 is predetermined by the traveling mechanism 62. Since it is performed by the foundation material laying mechanism 65 while traveling the distance of, it is possible to automate the work of laying the foundation material 4.

Further, in the step of transferring the uninstalled U-shaped member 5, while the main body 61 travels by the traveling mechanism 62 to the front side in the traveling direction by a predetermined distance, the transfer mechanism 63 has an arrow shown in FIG. As described above, the uninstalled U-shaped member 5 placed on the plurality of rods 631 is transferred to a predetermined position along the main body portion 61.

As described above, since the step of transferring the uninstalled U-shaped member 5 is performed at the same time as the step of laying the foundation material 4, the entire work time can be shortened.

In the present embodiment, the step of transferring the uninstalled U-shaped member 5 is performed at the same time as the step of laying the foundation material 4, but the step is not limited to this, and for example, the step of laying the foundation material 4. May be performed after the above is performed, or may be performed before the step of laying the foundation material 4 is performed.

[Process of installing an uninstalled U-shaped member]
Next, with reference to FIGS. 10 to 12, a step of installing the U-shaped member 5 in which the installation mechanism 64 is not provided will be described. FIG. 10 is a side view showing a state in which the installation mechanism 64 grips the uninstalled U-shaped member 5 that has been transferred to a predetermined position. FIG. 11 is a side view showing a state in which the U-shaped member 5 not provided with the installation mechanism 64 is moved to a desired horizontal position. FIG. 12 is a side view showing a state in which the installation mechanism 64 lowers and installs the U-shaped member 5 that has not been installed.

After the step of laying the foundation material 4 and the step of transferring the uninstalled U-shaped member 5, as shown in FIGS. 10 to 12, the installation mechanism 64 installs the uninstalled U-shaped member 5. Perform the installation process. That is, in the installation mechanism 64, when the step of installing the uninstalled U-shaped member 5 is performed, the main body portion 61 does not run and is stopped. Further, at that time, since the opening 615 does not overlap with the existing U-shaped member 5 along the installation direction, the uninstalled U-shaped member 5 is gripped by the installation mechanism 64 and passes through the opening 615. Then, it descends and is installed adjacent to the existing U-shaped member 5 installed at the frontmost position in the installation direction. Hereinafter, a specific description will be given.

First, in the step of installing the uninstalled U-shaped member 5, as shown in FIG. 10, the pair of gripping arms 644e move outward along the left-right direction (see FIG. 2), and the pair of U-shaped members 5 are paired. The grip portion 644c of the installation mechanism 64 is transferred to a predetermined position (the most front side in the traveling direction of the transfer mechanism 63) by the transfer mechanism 63 by stretching against the side wall portions 51 and 52 of the mounting mechanism 64. The member 5 is gripped. Then, the total station 8 (see FIG. 1) measures the horizontal position of the uninstalled U-shaped member 5 transferred to the predetermined position.

Next, as shown in FIG. 11, the installation mechanism 64 installs the first movable frame 642 with respect to the fixed frame 641 based on the horizontal position of the uninstalled U-shaped member 5 measured by the total station 8. By moving the left-right moving portion 644 with respect to the second movable frame 643 in the left-right direction, the uninstalled U-shaped member 5 gripped by the grip portion 644c should be installed at a desired horizontal position (should be installed). Move to position).

Next, as shown in FIG. 12, the installation mechanism 64 moves the U-shaped member 5 to a predetermined horizontal position by lowering the second movable frame 643 with respect to the first movable frame 642. It descends through the opening 615 and is installed adjacent to the existing U-shaped member 5 installed in the foremost direction in the installation direction.

After that, after the grip on the U-shaped member 5 is released, the second movable frame 643 is raised with respect to the first movable frame 642, and the first movable frame 642 is moved to the rear side in the installation direction with respect to the fixed frame 641. As a result, the grip portion 644c can return to the original position and grip the next non-installed U-shaped member 5 transferred to the predetermined position by the transfer mechanism 63.

As described above, since the step of installing the uninstalled U-shaped member 5 is performed by the installation mechanism 64, the U-shaped member 5 can be installed accurately and the work of installing the U-shaped member 5 is performed. It is possible to improve the sex.

The step of laying the basic material 4 described above, the step of transferring the uninstalled U-shaped member 5, and the step of installing the transferred uninstalled U-shaped member 5 are repeated by the U-shaped member installation device 6. By doing so, the U-shaped member 5 can be continuously installed on the existing U-shaped member 5 with high accuracy while laying the base material 4.

Next, the action and effect of this embodiment will be described.

As described above, the U-shaped member installation device 6 according to the present embodiment is a work device for sprinkling the basic material 4 that is the base on which the U-shaped member 5 is installed, and is a main body portion 61 and a main body portion. A hopper 66 provided in 61 for sprinkling the basic material 4, a leveling portion 67 provided in the main body 61 for leveling the basic material 4 sprinkled from the hopper 66, a traveling mechanism 62 for running the main body 61, and the like. It is equipped with.

According to this, the basic material 4 is sprinkled from the hopper 66 while the main body 61 travels to the traveling mechanism from 62. Further, the foundation material 4 sprinkled from the hopper 66 is leveled by the leveling portion 67. Therefore, the workability of the work of laying the foundation material 4 can be improved.

Further, in the present embodiment, a rolling compaction portion 68 provided in the main body portion 61 for rolling the foundation material 4 leveled by the leveling portion 67 is further provided.

According to this, the foundation material 4 leveled by the leveling section 67 is compacted by the compaction section 68. Therefore, the foundation material 4 can be compacted.

Further, in the present embodiment, a leveling portion height adjusting mechanism 69 for adjusting the height of the leveling portion 67 is further provided.

According to this, since the leveling portion height adjusting mechanism 69 can adjust the height of the leveling portion 67, the leveling portion 67 uses the basic material 4 sprinkled from the hopper 66 to have a desired height. Can be leveled to.

Further, in the present embodiment, the rear portion of the main body portion 61 in the traveling direction is supported by the existing U-shaped member 5.

According to this, the existing U-shaped member 5 can be used to support the rear portion of the main body portion 61 in the traveling direction.

Further, in the present embodiment, the rear portion of the main body portion 61 in the traveling direction is supported by the U-shaped member 5 via the guided portion 613 that is in contact with and guided by the existing U-shaped member 5.

According to this, since the main body portion 61 is guided by the existing U-shaped member 5 by the guided portion 613, the main body portion 61 travels along the existing U-shaped member 5 by the traveling mechanism 62. Can be done.

Further, in the present embodiment, the traveling mechanism 62 has wheels 622 that support the front portion of the main body portion 61 in the traveling direction.

According to this, since the front portion of the main body portion 61 is supported by the wheels 622, the front portion in the traveling direction and the rear portion in the traveling direction of the main body portion 61 are the wheels 622 of the traveling mechanism 62 and the existing U-shaped member, respectively. Supported by 5. Therefore, the main body portion 61 can travel in a state of being supported in a well-balanced manner.

Further, in the present embodiment, an installation mechanism 64 for gripping and lowering the uninstalled U-shaped member 5 and installing it adjacent to the existing U-shaped member 5 installed at the frontmost position in the installation direction is further provided.

According to this, the uninstalled U-shaped member 5 is gripped and lowered by the installation mechanism 64, and is installed adjacent to the existing U-shaped member 5 installed at the frontmost position in the installation direction. The U-shaped member 5 can be continuously installed on the U-shaped member 5 with good workability. Further, since all the steps of installing the U-shaped member 5 and laying the basic material 4 performed before the step of installing the U-shaped member 5 are performed by a single U-shaped member installing device 6. It is possible to improve the workability of the work of installing the U-shaped member 5, including the step of installing the U-shaped member 5 and the process of laying the basic material 4.

(Modification example of U-shaped member installation device)
Next, a modified example of the U-shaped member installation device will be described with reference to FIGS. 13 and 14. In the modified example, the same points as those in the above embodiment will be omitted, and the points different from those in the above embodiment will be mainly described.

FIG. 13 is a side view showing a modified example of the U-shaped member installation device 6. FIG. 14 is a front schematic view showing the installation mechanism 64'of the modified example.

As shown in FIG. 13, the U-shaped member installation device 6 of the modified example has a main body portion 61 guided over the existing U-shaped member 5 and a main body portion 61 along the existing U-shaped member 5. A traveling mechanism 62 for traveling in the installation direction, a transfer mechanism 63 for transferring an uninstalled U-shaped member 5 mounted on the main body 61 along the main body 61, and a transfer mechanism 63 for transferring to a predetermined position. The installation mechanism 64'and the U-shaped member 5 are installed adjacent to the existing U-shaped member 5 installed at the frontmost position in the installation direction by grasping and lowering the uninstalled U-shaped member 5. It is provided with a foundation material laying mechanism 65 for laying a foundation material 4 as a base to be installed.

The main body portion 61, the traveling mechanism 62, the transfer mechanism 63, and the foundation material laying mechanism 65 of the modified example are the same as the main body portion 61, the traveling mechanism 62, the transfer mechanism 63, and the foundation material laying mechanism 65 of the above embodiment. Is omitted.

As shown in FIG. 13, the installation mechanism 64'of the modified example is provided so as not to overlap with the transfer mechanism 63 along the installation direction. The installation mechanism 64'has a fixed frame 641' fixed on the main body 61, a first movable portion 642'supported by the fixed frame 641'movably in the installation direction, and a first movable portion movable in the left-right direction. It has a second movable portion 643'supported by the movable portion 642'and an elevating mechanism 644' provided in the second movable portion 643'to lower the uninstalled U-shaped member 5.

As shown in FIG. 13, the fixed frame 641'has a pair of lower fixed frames 641a' fixed on the pair of base frames 611 so as to extend in the installation direction and a pair of lower fixed frames 641a' extending in the installation direction. It has a pair of upper fixed frames 641b'provided above the lower fixed frame 641a, and a connecting frame 641c'that connects the pair of lower fixed frames 641a'and the pair of upper fixed frames 641b'.

A first straight guide groove 641d'extending in the installation direction is formed on the lower side surface of the upper fixed frame 641b' facing the lower fixed frame 641a'. Inside the upper fixing frame 641b', a first feed screw 641e' extending in the installation direction is rotatably supported. One end of the first feed screw 641e'is connected to the shaft of the first motor 641f' fixed to one end of the upper fixing frame 614b'. As a result, the first feed screw 641e'is rotationally driven by the drive of the first motor 641f'.

The connecting frame 641c'is provided so as to extend in the vertical direction, and one end (lower end) and the other end (upper end) thereof are the end of the lower fixed frame 641a'and the end of the upper fixed frame 641b', respectively. It is connected to the part.

The pair of first movable portions 642'is connected to the first nut 642a' screwed to the first feed screw 641e'and the first nut 642a'and guided by the first straight guide groove 641d'. It has one slider 642b'and a horizontal frame 642c' connected to the first slider 642b'and extending in the left-right direction.

When the first feed screw 641e'is rotationally driven by the drive of the first motor 641f', the first nut 642a' connected to the first slider 642b' guided by the first straight guide groove 641d'is the horizontal frame 642c. 'Move integrally with the installation direction. As a result, the pair of first movable portions 642'moves in the installation direction with respect to the fixed frame 641'.

In this way, since the first movable portion 642'is movably supported by the fixed frame 641' in the installation direction, the position of the gripped uninstalled U-shaped member 5 in the installation direction can be adjusted. As a result, the U-shaped member 5 can be continuously installed on the existing U-shaped member 5 with high accuracy.

Therefore, the position of the uninstalled U-shaped member 5 supported by the pair of first movable portions 642'via the second movable portion 643'and the like is adjusted in the installation direction. That is, the installation direction position adjusting mechanism for adjusting the position of the gripped non-installed U-shaped member 5 in the installation direction is the first straight guide groove 641d', the first feed screw 641e', and the first of the fixed frame 641'. It is composed of a motor 641f', a first nut 642a'of a first movable portion 642', a first slider 642b', and a horizontal frame 642c'.

As shown in FIG. 14, a second straight guide groove 642d'extending in the left-right direction is formed on the lower side surface of the horizontal frame 642c'. Inside the horizontal frame 642c', a second feed screw 642e' extending in the left-right direction is rotatably supported. One end of the second feed screw 642e'is connected to the shaft of the second motor 642f' fixed to one end of the horizontal frame 642c'. As a result, the second feed screw 642e'is rotationally driven by the drive of the second motor 642f'.

The second movable portion 643'has a second nut 643a' screwed into the second feed screw 642e'and a second slider 643b' connected to the second nut 643a' and guided by the second straight guide groove 642d'. And a fixed base 643c'which is connected to the second slider 643b' and extends in the left-right direction.

When the second feed screw 642e'is rotationally driven by the drive of the second motor 642f', the second nut 643a' connected to the second slider 643b' guided by the second straight guide groove 642d'is the fixing base 643c. 'Move along the left-right direction integrally with. As a result, the second movable portion 643'moves in the left-right direction with respect to the first movable portion 642'.

As described above, since the second movable portion 643'is movably supported by the first movable portion 642' in the left-right direction, the position of the gripped unattached U-shaped member 5 in the left-right direction is adjusted. As a result, the U-shaped member 5 can be continuously installed on the existing U-shaped member 5 with high accuracy.

Therefore, the uninstalled U-shaped member 5 supported by the second movable portion 643'can be moved in the left-right direction via the elevating mechanism 644'. That is, the left-right direction position adjusting mechanism for adjusting the left-right position of the gripped non-installed U-shaped member 5 is the second straight guide groove 642d', the second feed screw 642e', and the second feed screw 642e'of the horizontal frame 642c'. It is composed of a motor 642f', a second nut 643a'of a second movable portion 643', a second slider 643b', and a fixing base 643c'.

As shown in FIG. 14, the elevating mechanism 644'extends in the left-right direction and is fixed to the fixed base 643c', and has a drive motor 645' having a shaft 645a'protruding at both ends thereof and a drive motor 645'. A pair of rotary pulleys 646'fixed to the shaft 645a', a pair of belts 647'hanging around the pair of rotary pulleys 646', and a pair of belts 647' are connected to the chamfer of the U-shaped member 5. It has a pair of grips 648'with hookable claws 648a'.

When the drive motor 645'is rotationally driven in one of clockwise and counterclockwise directions, the pair of grips 648'can be raised by winding up the belt 647'to which the rotary pulley 646'is hung. On the other hand, when the drive motor 645'is driven to rotate clockwise and counterclockwise, the pair of grip portions 648'can be lowered by unwinding the belt 647'to which the rotary pulley 646'is hung. ..

In this modification, the elevating mechanism 644'makes the pair of grips 648'movable in the vertical direction by combining the drive motor 645', the pair of rotary pulleys 646', and the pair of belts 647'. A combination of an electric winch and a wire rope may be used instead of the combination of. In this case, one end and the other end of the wire rope are connected to the electric winch fixed to the fixing base 643'and the pair of gripping portions 648', respectively, and the pair of grips are gripped by winding or unwinding the electric winch to the wire rope. The part 648'can be raised and lowered.

In this way, the uninstalled U-shaped member 5 gripped by the grip portion 648'is lowered by the elevating mechanism 644'and is adjacent to the existing U-shaped member 5 installed at the frontmost position in the installation direction. As a result, the U-shaped member 5 can be continuously installed on the existing U-shaped member 5 with good workability.

[The process of laying the basic material of the modified example, the process of transferring the U-shaped member that has not been installed, and the process of installing the U-shaped member that has not been installed]
The step of laying the basic material 4 of the modified example, the step of transferring the uninstalled U-shaped member 5, and the step of installing the uninstalled U-shaped member 5 are the steps of laying the basic material 4 of the above-described embodiment. , And the process of transferring the uninstalled U-shaped member 5 and the process of installing the uninstalled U-shaped member 5, so the description thereof will be omitted.

After the U-shaped member 5 is installed, the main body 61 is simply moved forward in the traveling direction to release the grip on the U-shaped member 5.

According to the U-shaped member installation device 6 according to the modified example, the same operation and effect as those of the above embodiment can be obtained.

Although the present embodiment has been described above, the above embodiment shows only a part of the application example of the present invention, and does not mean that the technical scope of the present invention is limited to the specific configuration of the above embodiment. ..

In the above embodiment, the U-shaped member installation device 6 includes, but is not limited to, the traveling mechanism 62, and for example, the traveling mechanism 62 may not be provided. In this case, the compaction unit 68 also has a traveling function of traveling the main body unit 61, and is provided with a motor for rotationally driving the compaction roller 682.

Further, in the above embodiment, the foundation material laying mechanism 65 is integrally configured with the installation mechanism 64, but the present invention is not limited to this, and the installation mechanism 64 and the foundation material laying mechanism 65 are configured separately. You may. In the case of this configuration, the installation mechanism 64 and the foundation material laying mechanism 65 each have a traveling mechanism and travel independently.

1 Ground 2 Depression 3 Crushed stone 4 Foundation material 5 U-shaped member 6 U-shaped member Installation device 61 Main body 613 Guided part 62 Traveling mechanism 622 Wheel 63 Transfer mechanism 64 Installation mechanism 641 Fixed frame 642 1st movable frame 643 2nd Movable frame 643g 3rd straight guide groove 644 Left / right moving part 644b 3rd slider 644c Grip part 65 Basic material laying mechanism 66 Hopper 67 Leveling part 68 Rolling part 69 Leveling part Height adjustment mechanism 7 Vehicle 8 Total station 100 U-shaped Material installation system

Claims (5)

It is a work device that sprinkles the basic material that is the base on which the U-shaped member is installed.
With the main body
A hopper provided on the main body to sprinkle the basic material,
A leveling portion provided on the main body portion for leveling the basic material sprinkled from the hopper, and a leveling portion.
A traveling mechanism for traveling the main body and
It is provided with an installation mechanism that grips and lowers an uninstalled U-shaped member and installs it adjacent to an existing U-shaped member installed at the frontmost position in the installation direction .
Working equipment. Further provided in the main body portion is a compaction portion for compacting the foundation material leveled by the leveling portion.
The working apparatus according to claim 1. Further provided with a leveling portion height adjusting mechanism for adjusting the height of the leveling portion.
The working apparatus according to claim 1 or 2. The rear portion of the main body in the traveling direction is supported by an existing U-shaped member.
The working apparatus according to any one of claims 1 to 3. The traveling mechanism has wheels that support a portion of the main body in the traveling direction.
The working apparatus according to any one of claims 1 to 4 .

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