JP7364511B2 - Reversing device and reversing method - Google Patents

Description

The present invention relates to a reversing device and a reversing method.

2. Description of the Related Art Inverting devices for inverting objects upside down have been known. For example, Patent Document 1 discloses a technique for inverting an object by gripping the object by sandwiching the object between two rotation pads and rotating the rotation pads using an actuator. Further, Patent Document 2 discloses a technique in which an endless belt is attached to the outer periphery of a lifted object and the object is reversed by rotating the endless belt. Further, Patent Document 3 discloses a technique in which an object is rotated between two arms by moving one arm member of two arm members that support the bottom surface of the object.

Japanese Patent Application Publication No. 5-78092 Jitszen No. 62-96084 Japanese Patent Application Publication No. 6-278985

However, even with the above-mentioned prior art, there is still room for improvement in terms of technology for reducing the energy required to reverse an object while improving workability. For example, the technique described in Patent Document 1 requires electrical energy to drive an actuator for rotating a rotating pad. Furthermore, the technology described in Patent Document 2 not only requires energy to drive the endless belt, but also requires lifting the object in order to attach or remove it from the endless belt, which is time-consuming. It takes. In addition, the technology described in Patent Document 3 not only requires energy to move the arm, but also requires support for the object that becomes unstable while the arm is moving, and it is necessary to invert the object. It takes time and effort.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a technology for reducing the energy required for reversing an object while improving workability in a reversing device.

The present invention has been made to solve at least part of the above-mentioned problems, and can be realized as the following forms.

(1) According to one embodiment of the present invention, a reversing device for reversing an object upside down is provided. This reversing device includes a cart portion having wheels and an arm, and a gripping portion that is connected to one end of the arm and grips the object, and the gripping portion holds the object from both sides. It has a pair of rotary pads that can each rotate while gripping the object by sandwiching the object, and a state in which a portion of the object that is vertically lower than the center of gravity is gripped by the pair of rotary pads. Then, using the wheel as a fulcrum, the object is lifted by pushing down the other end of the arm, and the object is reversed as the pair of rotating pads rotate.

According to this configuration, the object to be inverted is sandwiched on both sides by a pair of rotatable rotation pads, and then lifted by the movement of the arm. At this time, since the pair of rotating pads grips a portion of the object that is vertically lower than the center of gravity, the lifted object is rotated by its own weight and turned upside down. This allows the object to be reversed without inputting energy from the outside. In addition, lifting an object in order to invert it is possible by using an arm that has a pair of rotating pads connected to one end, and using a wheel as a fulcrum to lift the other end. This can be done by pressing down. This allows the object to be easily lifted and turned over. In this way, it is possible to reduce the energy required to invert the object while improving the workability of inverting the object.

(2) In the reversing device of the above embodiment, the distance from the wheel to the one end of the arm may be shorter than the distance from the wheel to the other end. According to this configuration, when lifting an object, the distance from the wheel that serves as the fulcrum of the arm to one end to which the grip is connected is greater than the distance to the other end to which it is pushed down. It is shorter than . As a result, even if the other end of the arm is pushed down with a relatively small force, the object can be lifted up along with the gripping portion, based on the lever principle. Therefore, the energy required to reverse the object can be further reduced.

(3) In the reversing device of the above embodiment, the gripping section further includes a cross clamp, the pair of rotation pads are attached to the tip of the cross clamp, and the base end of the cross clamp is attached to the arm. The rotating pad may be connected to one end thereof, and by lifting the base end of the cross clamp, each of the pair of rotating pads may move in a direction to sandwich the object. According to this configuration, a cross clamp is connected to one end of the arm, which can move each of the pair of rotary pads in a direction to sandwich the object by lifting the base end. Thereby, the object can be grasped by pushing down the other end of the arm, so that the workability of reversing the object can be further improved.

(4) In the reversing device of the above embodiment, the gripping portion further includes a connection portion of the gripping portion that is connected to one end of the arm and is disposed vertically upwardly, and the rotation pad It may have a guard frame extending laterally from. According to this configuration, the gripping part has a guard frame extending laterally from the rotation pad in a state where the connecting part connected to one end of the arm is arranged vertically upward. Thereby, even if the object rotates around the pair of rotation pads when lifting the object together with the gripping section, the guard frame can prevent the object from coming into contact with the ground or the like and being damaged.

(5) In the reversing device of the above embodiment, casters may be attached to the tip of the guard frame. According to this configuration, casters are attached to the tip of the guard frame. Thereby, the object held by the gripping section can be moved along the ground by utilizing the rolling of the casters. Therefore, not only does a separate device for transporting the object become unnecessary, but also the work of transshipping between the moving device and the reversing device becomes unnecessary. Therefore, workability can be further improved.

(6) According to another aspect of the present invention, a reversing method for reversing an object upside down is provided. This inversion method includes a gripping step of gripping the object by sandwiching a portion of the object vertically below the center of gravity from both sides of the object between a pair of rotatable rotary pads. After the gripping step, by pushing down the other end of the arm of the truck using the wheels of the truck as a fulcrum, the device is gripped by the pair of rotating pads connected to one end of the arm. and an inversion step of lifting the object and inverting the object as the pair of rotating pads rotate. According to this configuration, in the gripping process, a portion of the object that is vertically lower than the center of gravity is gripped from both sides of the object by the pair of rotatable pads. Thereby, in the reversing step, by lifting the object gripped by the pair of rotary pads, the object can be turned upside down using its own weight. Therefore, the object can be reversed without inputting energy from the outside. Further, by using the wheel of the truck as a fulcrum and pushing down the other end of the arm of the truck, the object can be reversed, which improves work efficiency. In this way, it is possible to reduce the energy required to invert the object while improving the workability of inverting the object.

Note that the present invention can be realized in various aspects, such as a system including a reversing device, a control method for these devices and systems, and a computer that causes these reversing devices and systems to perform vertical reversal of objects. It can be realized in the form of a program, a server device for distributing the computer program, a non-temporary storage medium storing the computer program, etc.

It is a side view of the reversing device of a 1st embodiment. It is a front view of the reversing device of a 1st embodiment. FIG. 3 is a schematic diagram of a curb that is reversed by a reversing device. It is a detailed view of the gripping part in a state of gripping a curbstone. FIG. 3 is a first diagram illustrating the operation of the reversing device. FIG. 2 is a second diagram illustrating the operation of the reversing device. FIG. 3 is a third diagram illustrating the operation of the reversing device. FIG. 4 is a fourth diagram illustrating the operation of the reversing device.

<First embodiment>
FIG. 1 is a side view of the reversing device 1 of the first embodiment. FIG. 2 is a front view of the reversing device 1 of this embodiment. FIG. 3 is a schematic diagram of the curb 5 that is reversed by the reversing device 1. FIG. 1(a) shows a schematic diagram of the left side of the reversing device 1, and FIG. 1(b) shows a schematic diagram of the right side of the reversing device 1. The reversing device 1 of the first embodiment is used, for example, to invert the top and bottom of a curb 5 that partitions a roadway and a sidewalk by being installed on a road. For manufacturing reasons, the curbstone 5 is sometimes manufactured with its vertically upper surface facing downward when installed on a road. For this reason, the curbstone 5 that is brought to the road construction site is placed on the ground with its surface facing downward, and then flipped upside down to be installed in a predetermined position, so it is necessary to flip the curbstone 5 upside down at the site. There is. The reversing device 1 of this embodiment can invert the curb 5 upside down and arrange the curb 5 at a predetermined position at the road construction site. The reversing device 1 of this embodiment includes a truck section 10 and a grip section 20. In FIGS. 1, 2, 4 to 7, the horizontal direction is the x-axis direction, the vertical direction is the z-axis direction, and the direction perpendicular to the x-axis direction and the z-axis direction is the y-axis direction. In this embodiment, the reversing device 1 in the state shown in FIGS. 1 and 2 is configured such that the longitudinal direction of the main frame 12 included in the gripping part 20 is parallel to the x-axis direction and parallel to the ground 6. is placed on the ground 6.

First, an example of the shape of the curbstone 5 that is turned upside down by the turning device 1 will be described. FIG. 3(a) shows a top view of the curb 5 in contact with the road, FIG. 3(b) shows a front view of the curb 5, and FIG. 3(c) shows a front view of the curb 5. ) shows a side view of the curb 5. Here, the curb 5 is a substantially rectangular parallelepiped-shaped member made of concrete. In this embodiment, the curb 5 is formed with an installation surface 5a, a surface 5b, and four side surfaces 5c, 5d, 5e, and 5f connected to the installation surface 5a and the surface 5b.

The installation surface 5a is a surface that comes into contact with the surface of the road when the curb 5 is installed on the road. The surface 5b is a surface facing upward in the vertical direction when the curb 5 is installed on the road. The surface 5b is formed to have a smaller area than the installation surface 5a. The side surface 5c and the side surface 5d are formed to be substantially parallel to the longitudinal direction of the curb 5, as shown in FIG. 3(a). The side surface 5c and the side surface 5d are formed to be inclined with respect to the z-axis direction when the curb 5 is installed on the road. The side surface 5e and the side surface 5f are formed to be substantially parallel to the width direction of the curb 5. The side surface 5e and the side surface 5f are formed so as to be substantially parallel to the z-axis direction when the curb 5 is installed on the road.

As shown in FIG. 3(c), the curbstone 5 is formed so that a cross section perpendicular to the longitudinal direction has a trapezoidal shape. From this, the center of gravity G5 of the curb 5 is located closer to the installation surface 5a than the surface 5b, as shown in FIG. 3(c). Note that the shape of the curb 5 is not limited to this.

The truck section 10 has an arm 11 and wheels 18. The trolley part 10 supports the gripping part 20 and can move the curbstone 5 gripped by the gripping part 20 to a predetermined location.

The arm 11 includes a main frame 12, a handle 13, an axle support 14, an axle 15, and subframes 16 and 17. The main frame 12 is a rod-shaped member, and in this embodiment, is arranged along the x-axis direction. The main frame 12 is made of a material that is strong enough not to be damaged even when the weight of the curbstone 5 acts on one end 12a.

The handle 13 is arranged at an end of the main frame 12 opposite to one end 12a. The handle 13 is a part that the operator of the reversing device 1 grasps and pushes down or up when operating the trolley section 10. The handle 13 corresponds to the "other end" in the claims.

The axle support part 14 is a rod-shaped member and is arranged along the z-axis. The axle support portion 14 has, for example, the same thickness as the main frame 12 and is fixed to the main frame 12 at one end. In this embodiment, one end of the axle support part 14 is connected to the main frame 12 at a position closer to one end 12 a to which the grip part 20 is connected than the handle 13 . That is, in the arm 11, the distance from the wheel 18 to one end 12a of the main frame 12 is shorter than the distance from the wheel 18 to the handle 13.

The axle 15 is a rod-shaped member connected to the other end of the axle support portion 14 . The axle 15 is arranged so that its central axis runs along the y-axis. The subframe 16 connects the other end of the axle support portion 14 and one end 12a of the main frame 12. The subframe 17 connects the other end of the axle support portion 14 and a portion of the main frame 12 on the handle 13 side. Subframe 16 and subframe 17 reinforce the connection between axle support 14 and axle 15.

Wheels 18 are rotatably attached to both sides of axle 15. In this embodiment, the reversing device 1 can be moved to a desired position by operating the handle 13 by the operator of the reversing device 1. Further, the wheel 18 serves as a fulcrum for the arm 11 in the reversing method described later. Thereby, when the arm 11 lowers the handle 13 to the negative side in the z-axis direction, one end 12a of the main frame 12 can be raised to the positive side in the z-axis direction, and the handle 13 can be lowered to the positive side in the z-axis direction. When raised to the side, one end 12a of the main frame 12 can be lowered to the minus side in the z-axis direction.

The grip portion 20 includes a cross clamp 21, a pair of rotating pads 22 and 23, and guard frames 24 and 25. The grip part 20 is connected to one end 12a of the main frame 12 and grips the curb 5.

Cross clamp 21 is connected to one end 12a of main frame 12 via wire 21a. The wire 21a is inserted through a connecting ring 10c provided at one end 12a, and both ends of the wire 21a can move freely relative to the connecting ring 10c. The cross clamp 21 has a first link member 21b and a second link member 21c. The wire 21a corresponds to a "connection part" in the claims.

The first link member 21b rotatably supports the rotating pad 22 of the pair of rotating pads 22 and 23. In the state shown in FIG. 2, the first link member 21b extends in the positive direction of the z-axis from the side supporting the rotating pad 22, and then extends in the negative direction of the y-axis while extending in the positive direction of the z-axis. It is formed like this. One end of the wire 21a is connected to the positive end of the first link member 21b in the z-axis direction.

The second link member 21c rotatably supports the rotating pad 23 of the pair of rotating pads 22 and 23. In the state of FIG. 2, the second link member 21c extends in the positive direction of the z-axis from the side supporting the rotation pad 22, and then extends in the positive direction of the y-axis while extending in the positive direction of the z-axis. It is formed like this. The other end of the wire 21a is connected to the positive end of the second link member 21c in the z-axis direction.

As shown in FIG. 2, the first link member 21b and the second link member 21c are arranged to intersect, and are connected by a link member 21d. Thereby, the first link member 21b and the second link member 21c can rotate around the link member 21d. In the cross clamp 21, when the connection ring 10c and the link member 21d are separated, the tip of the first link member 21b and the tip of the second link member 21c are closed. Further, when the connecting ring 10c and the link member 21d approach each other, the tip of the first link member 21b and the tip of the second link member 21c are opened. That is, in this embodiment, by changing the distance between the connection ring 10c and the link member 21d, it is possible to open and close the tips of the first link member 21b and the second link member 21c.

The rotation pad 22 is rotatably connected to the tip of the first link member 21b, that is, the end on the minus side of the z-axis, via a bearing 22a. In this embodiment, the rotation axis of the rotation pad 22 is substantially parallel to the y-axis direction. The rotating pad 22 is formed with a contact surface 22b that comes into contact with a side surface 5e (see FIG. 3) of the curb 5 in a method for reversing the curb 5, which will be described later.

The rotation pad 23 is rotatably connected to the tip of the second link member 21c, that is, the end on the minus side of the z-axis via a bearing 23a. In this embodiment, the rotation axis of the rotation pad 23 is substantially coaxial with the rotation axis of the rotation pad 22, and is substantially parallel to the y-axis direction. The rotary pad 23 is formed with a contact surface 23b that comes into contact with a side surface 5f (see FIG. 3) of the curb 5 in a method for reversing the curb 5, which will be described later. Contact surface 23b faces contact surface 22b.

FIG. 4 is a detailed view of the grip portion 20 in a state where it grips the curbstone 5. As shown in FIG. FIG. 4(a) shows a schematic diagram of the gripping portion 20 in a state of gripping the curbstone 5, viewed from the minus side in the x-axis direction. FIG. 4(b) shows a schematic diagram of the gripping portion 20 in a state of gripping the curbstone 5, viewed from the positive side in the y-axis direction. In this embodiment, when the curb 5 is gripped by the grip part 20 in order to turn the curb 5 upside down, the contact surface 22b of the rotary pad 22 and the contact surface 23b of the rotary pad 23 are This means that the rotational axes R1 of the rotation pads 22 and 23 contact the side surfaces 5e and 5f of the curbstone 5 so that they are at a position lower than the center of gravity G5 of the curbstone 5. The portion where the contact surface 22b of the rotary pad 22 and the contact surface 23b of the rotary pad 23 contact the curb 5 corresponds to "a portion vertically below the center of gravity of the object" in the claims.

The guard frame 24 is arranged on the surface of the rotation pad 22 opposite to the contact surface 22b. In this embodiment, the guard frame 24 has two side frames 24a, 24b and two upper frames 24c, 24d.

The two side frames 24a and 24b are connected to the side from the rotation pad 22, that is, in the x-axis direction, with the wire 21a connected to one end 12a of the main frame 12 being arranged vertically upward. It extends to both the positive side and the negative side. Casters 24e and 24f that can roll along the ground 6 are arranged at the respective tips of the side frames 24a and 24b.

The upper frame 24c is formed to extend from the rotation pad 22 in the positive direction of the x-axis and in the positive direction of the z-axis (see FIG. 1(a)). The upper frame 24d is formed to extend from the rotation pad 22 in the negative direction of the x-axis and in the positive direction of the z-axis (see FIG. 1(a)).

Here, the size of the guard frame 24 will be explained using a schematic diagram showing a side surface of the gripping part 20 gripping the curbstone 5 shown in FIG. 4(b). The positive end of the guard frame 24 in the x-axis direction is defined as an end Ex1, and the negative end thereof is defined as an end Ex2. Specifically, the positive end Ex1 of the guard frame 24 in the x-axis direction is a virtual straight line connecting the positive end of the caster 24e in the x-direction and the positive end of the upper frame 24c in the x-direction. Indicated by Moreover, the end Ex2 of the guard frame 24 on the negative side in the x-axis direction is indicated by an imaginary straight line connecting the negative side tip of the caster 24f in the x-axis direction and the tip of the upper frame 24d on the negative side in the x-axis direction. . The guard frame 24 has a size that can include the curbstone 5 between the end Ex1 and the end Ex2 in the x-axis direction (see FIG. 4(b)).

Further, the positive end of the guard frame 24 in the z-axis direction is defined as an end Ez1. Specifically, the positive end Ez1 of the guard frame 24 in the z-axis direction is an imaginary point connecting the positive end of the upper frame 24c in the z-axis direction and the positive end of the upper frame 24d in the z-axis direction. indicated by a straight line. The guard frame 24 has a size such that the end Ez1 is located on the minus side in the z-axis direction compared to the installation surface 5a of the curb 5 (see FIG. 4(b)). Furthermore, the end of the guard frame 24 on the minus side in the z-axis direction is defined as an end Ez2. Specifically, the end Ez2 of the guard frame 24 on the negative side in the z-axis direction is defined by an imaginary straight line connecting the negative end of the caster 24e in the z-axis direction and the negative end of the caster 24f in the z-axis direction. shown. The guard frame 24 has a size such that the end Ez2 is located at the same position as the surface 5b of the curb 5 or on the positive side compared to the surface 5b of the curb 5 in the z-axis direction (see FIG. 4(b)).

The guard frame 25 is arranged on the surface of the rotation pad 23 opposite to the contact surface 23b. In this embodiment, the guard frame 25 includes two side frames 25a, 25b and two upper frames 25c, 25d.

The two side frames 25a and 25b are connected to the side from the rotation pad 23, that is, in the x-axis direction, with the wire 21a connected to one end 12a of the main frame 12 arranged vertically upward. It extends to both the positive side and the negative side. Casters 25e and 25f that can roll along the ground 6 are arranged at the respective tips of the side frames 25a and 25b.

The upper frame 25c is formed to extend from the rotation pad 23 in the positive direction of the x-axis and in the positive direction of the z-axis (see FIG. 1(b)). The upper frame 24d is formed to extend from the rotation pad 22 in the negative direction of the x-axis and in the positive direction of the z-axis (see FIG. 1(b)).

Similarly to the guard frame 24, the guard frame 25 has a positive end and a negative end in the x-axis direction. It's sato. Further, the end of the guard frame 25 on the positive side in the z-axis direction is sized to be located on the negative side compared to the installation surface 5a of the curb 5 in the z-axis direction. Furthermore, the end of the guard frame 25 on the minus side is sized to be located at the same position as the surface 5b of the curb 5 or on the plus side compared to the surface 5b of the curb 5 in the z-axis direction.

FIG. 5 is a first diagram illustrating the operation of the reversing device 1. FIG. 6 is a second diagram illustrating the operation of the reversing device 1. FIG. 7 is a third diagram illustrating the operation of the reversing device 1. FIG. 8 is a fourth diagram illustrating the operation of the reversing device 1. Next, a method of reversing the curb 5 using the reversing device 1 of this embodiment will be explained. Before being reversed by the reversing device 1, the curb 5 has its installation surface 5a facing the positive side in the z-axis direction, and its surface 5b is in contact with the ground 6.

First, the reversing device 1 is brought close to the curb 5 placed on the ground 6 before installation. Specifically, the grip portion 20 is brought close to the curb 5 on the positive side in the z-axis direction. More specifically, the rotating pad 22 is located on the positive side of the side surface 5e of the curb 5 in the z-axis direction, and the rotating pad 23 is located on the positive side of the side surface 5f of the curb 5 in the z-axis direction. Bring the grip 20 closer to the curb 5. When the reversing device 1 and the curb 5 are relatively far apart, the trolley unit 10 is rotated using the casters 24e, 24f, 25e, and 25f of the gripping unit 20 with the casters 24e, 24f, 25e, and 25f being grounded. It is also possible to move the vehicle closer to the curb 5.

After bringing the grip 20 close to the positive side of the curb 5 in the z-axis direction, move the grip 20 toward the positive side of the curb 5 in the z-axis direction so that the curb 5 is located between the rotating pad 22 and the rotating pad 23. Cover from the side. Specifically, the handle 13 is raised and one end 12a of the main frame 12 is lowered. As a result, the rotating pad 22 comes into contact with the side surface 5e of the curb 5, and the rotating pad 23 comes into contact with the side surface 5f of the curb 5. At this time, the casters 24e, 24f, 25e, and 25f are lowered until they touch the ground 6 (see FIG. 4). Note that the method for covering the curb 5 with the grip 20 is not limited to this, and the curb 5 may be positioned between the rotary pad 22 and the rotary pad 23 while moving the grip 20 in the x-axis direction. good.

Next, when the handle 13 is pushed down to the minus side in the z-axis direction, the grip part 20 is raised together with one end 12a of the main frame 12 using the wheel 18 as a fulcrum. As a result, the connection ring 10c separates from the link member 21d in the cross clamp 21, so that the tip of the first link member 21b and the tip of the second link member 21c are closed. When the tip of the first link member 21b and the tip of the second link member 21c are closed, the distance between the rotating pad 22 and the rotating pad 23 becomes shorter, so that the curb 5 is moved between the rotating pad 22 and the rotating pad 23. (gripping process). At this time, as described above, the rotation axes of the rotation pads 22 and 23 are formed at a position lower than the center of gravity G5 of the curb 5 (see FIG. 4(a)).

Next, the handle 13 is further pushed down in the negative direction of the z-axis. When the handle 13 is further pushed down, one end 12a of the main frame 12 is further raised, so that the surface 5b of the curb 5 is separated from the ground 6 (see the white arrow F1 in FIG. 6(a)). When the curb 5 leaves the ground 6, the curb 5 becomes unstable because its center of gravity G5 is on the positive side of the z-axis relative to the rotation axis R1 of the rotation pads 22 and 23, and falls to the positive or negative side of the x-axis ( (See white arrow F2 in FIG. 6(b)). Note that FIG. 6(b) shows a state in which the curb stone 5 is tilted toward the plus side in the x-axis direction. At this time, as shown in FIG. 6(b), on the outside of the side surface 5d of the curb 5, there are a side frame 24a and an upper frame 24c of the guard frame 24, and a side frame 25a and an upper frame 25c of the guard frame 25. Because of this, these frames contact the ground 6 first before the curb 5 contacts the ground 6. Thereby, damage to the curb 5 due to collision between the curb 5 and the ground 6 can be suppressed.

When the handle 13 is further pushed down in the negative direction of the z-axis from the state shown in FIG. 6 (see white arrow F3 in FIG. 7), the guard frame 24 and the guard frame 25 that are in contact with the ground 6 are separated from the ground 6. . As a result, the curb 5 rotates in a stable state in which the center of gravity G5 of the curb 5 is on the negative side of the z-axis rather than the rotation axis R1 (see white arrow F4 in FIG. 7). Then, it stabilizes in a state reversed by 180 degrees from the state shown in FIG. That is, the series of operations shown in FIGS. 6 and 7 constitutes the process of reversing the curb 5. In this embodiment, in order to transport the curbstone 5 to the place where the curb 5 is to be installed, the handle 13 is pressed down in the negative direction of the z-axis by utilizing the rolling of the wheels 18, and the state shown in FIG. It is possible to move it in this state.

Finally, at the installation location of the curbstone 5, the handle 13 is raised in the positive direction of the z-axis to lower the grip portion 20. When the handle 13 is raised in the positive direction of the z-axis (see white arrow F5 in FIG. 8), the grip portion 20 is lowered, so that the curb 5 first touches the ground 6. Further, when the grip part 20 is lowered, the connection ring 10c approaches the link member 21d in the cross clamp 21, so that the distance between the tip of the first link member 21b and the tip of the second link member 21c widens, and the rotating pad 22 The grip of the curbstone 5 by the rotating pad 23 is released (release step). As a result, the curbstone 5 is placed in a predetermined position with the installation surface 5a facing in the negative direction of the z-axis by inverting the top and bottom (see FIG. 8). As described above, in the reversing method of the present embodiment, the curb 5 whose surface 5b is in contact with the ground 6 is turned upside down at the site where the curb 5 is installed, and the curb 5 can be installed at a predetermined position.

According to the above-described reversing device of this embodiment, the curb 5 to be reversed is lifted by the movement of the arm 11 after both sides are sandwiched between the pair of rotatable rotation pads 22 and 23. At this time, since the pair of rotating pads 22 and 23 grip the side surfaces 5e and 5f of the curbstone 5 on the negative side of the z-axis relative to the center of gravity G5, the lifted curbstone 5 rotates due to its own weight. and the top and bottom are flipped. Thereby, the curb 5 can be reversed without inputting energy from the outside. In addition, lifting the curb 5 in order to invert the curb 5 is achieved by using the wheel 18 as a fulcrum on the arm 11 to which the grip 20 having the pair of rotating pads 22, 23 is connected to one end 12a. This can be done by pressing down on the handle 13. This allows the curb to be easily lifted and reversed. In this way, it is possible to reduce the energy required to reverse the curb 5 while improving the workability of reversing the curb 5.

Furthermore, according to the reversing device of this embodiment, the distance from the wheel 18, which is the fulcrum of the arm 11 when lifting the curb 5, is longer than the distance to the one end 12a to which the grip portion 20 is connected. , which is longer than the distance to the handle 13. Thereby, even if the handle 13 of the arm 11 is pushed down with a relatively small force, the curb 5 can be lifted together with the grip part 20 by the lever principle. Therefore, the energy for reversing the curb 5 can be further reduced.

Further, according to the reversing device of this embodiment, by lifting the wire 21a at one end 12a of the main frame 12, it is possible to move each of the pair of rotating pads 22 and 23 in the direction to sandwich the curb 5. A possible cross clamp 21 is connected. Thereby, the curbstone 5 can be gripped by pushing down the handle 13, so that the workability of reversing the curbstone 5 can be further improved.

Further, according to the reversing device of this embodiment, the gripping section 20 holds the rotating pad 22, while the wire 21a connected to one end 12a of the main frame 12 is placed on the positive side in the z-axis direction. Guard frames 24 and 25 extend from 23 in at least one of the x-axis direction and the z-axis direction. This prevents the curb 5 from coming into contact with the ground 6 and being damaged by the guard frames 24 and 25 even if the curb 5 rotates around the pair of rotating pads 22 and 23 when lifting the curb 5 together with the gripping part 20. Can be suppressed.

Further, according to the reversing device of this embodiment, casters 24e, 24f, 25e, and 25f are attached to the respective tips of the side frames 24a, 24b, 25a, and 25b. Thereby, the curbstone 5 held by the gripping part 20 can be moved along the ground 6 using the rolling of the casters 24e, 24f, 25e, and 25f. Therefore, not only is there no need for a separate device for transporting the curbstone 5, but also there is no need for transshipment work between the device for moving and the device for reversing. Therefore, workability can be further improved.

Further, according to the reversing method of this embodiment, in the gripping process, the side surfaces 5e and 5f of the curbstone 5 on the negative side in the z-axis direction with respect to the center of gravity G5 of the curbstone 5 are The curb 5 is gripped from both sides. Thereby, in the reversing step, by lifting the curb 5 held by the pair of rotation pads 22 and 23, the curb 5 can be turned upside down by the weight of the curb 5 itself. Therefore, the curb 5 can be reversed without inputting energy from the outside. Further, by using the wheel 18 of the truck section 10 as a fulcrum and pushing down the handle 13 of the arm 11 of the truck section 10, the curbstone 5 can be reversed, thereby improving work efficiency. In this way, it is possible to reduce the energy required to reverse the curb 5 while improving the workability of reversing the curb 5.

<Modified example of this embodiment>
The present invention is not limited to the above-described embodiments, and can be implemented in various forms without departing from the spirit thereof. For example, the following modifications are also possible.

[Modification 1]
In the embodiment described above, the object to be turned upside down by the turning device 1 is the curbstone 5. However, the object is not limited to this.

[Modification 2]
In the above-described embodiment, the arm 11 has a rod-shaped main frame 12 and a wheel 18 provided on the main frame 12, and by operating the handle 13, the arm 11 is rotated to one end 12a side with the wheel 18 as a fulcrum. It was assumed that it could be moved up and down. However, the configuration of the arm is not limited to this. Any configuration is acceptable as long as one end moves up and down across the fulcrum and the other end moves in the opposite direction. Further, the wheels may not be provided, and the arm may have a portion that functions as a fulcrum.

[Modification 3]
In the above embodiment, in the arm 11, the distance from the wheel 18 to one end 12a of the main frame 12 is shorter than the distance from the wheel 18 to the handle 13. The relationship between the distances to the points is not limited to this.

[Modification 4]
In the embodiment described above, the grip section 20 includes the cross clamp 21, a pair of rotating pads 22 and 23, and guard frames 24 and 25. However, the configuration of the grip portion is not limited to this. There is no need for a cross clamp or a guard frame, and it is sufficient to have a pair of rotating pads that grip the curb 5 by sandwiching the curb 5 from both sides and are rotatable, respectively.

Although the present aspect has been described above based on the embodiments and modified examples, the embodiments of the above-described aspect are for facilitating understanding of the present aspect, and do not limit the present aspect. This aspect may be modified and improved without departing from the spirit and scope of the claims, and this aspect includes equivalents thereof. Furthermore, if the technical feature is not described as essential in this specification, it can be deleted as appropriate.

1... Reversing device 5... Curb 5a... Installation surface 5b... Surface 6... Ground 10... Dolly portion 11... Arm 12... Main frame 12a... One end 13... Handle 18... Wheel 20... Gripping part 21... Cross clamp 21a... Wire 22, 23... Rotating pad 24, 25... Guard frame 24e, 24f, 25e, 25f... Caster G5... Center of gravity R1... Rotating axis

Claims (5)

A reversing device for reversing an object upside down,
a truck portion having wheels and an arm;
a gripping part connected to one end of the arm and gripping the object,
The gripping portion is
a pair of rotating pads that are respectively rotatable while gripping the object by sandwiching the object from both sides ;
a guard frame extending laterally from the rotating pad with a connecting portion connected to one end of the arm disposed vertically upward;
Lifting the object by pushing down the other end of the arm using the wheels as a fulcrum while gripping a portion of the object vertically below the center of gravity with the pair of rotating pads; inverting the object as the pair of rotating pads rotate;
Reversing device. The reversing device according to claim 1,
In the arm, a distance from the wheel to the one end is shorter than a distance from the wheel to the other end.
Reversing device. The reversing device according to claim 1 or 2,
The gripping section further includes a cross clamp, the pair of rotation pads are attached to the tip of the cross clamp, and a base end of the cross clamp is connected to one end of the arm,
By lifting the base end of the cross clamp, each of the pair of rotating pads moves in a direction to sandwich the object;
Reversing device. The reversing device according to any one of claims 1 to 3 ,
Casters are attached to the tip of the guard frame,
Reversing device. A reversal method for reversing an object upside down,
a gripping step of gripping the object by sandwiching a portion of the object vertically below the center of gravity from both sides of the object between a pair of rotating pads that are respectively rotatable;
After the gripping step, the other end of the arm of the truck is pushed down using the wheel of the truck as a fulcrum, so that it is gripped by the pair of rotary pads connected to one end of the arm. an inversion step of lifting the object and inverting the object as the pair of rotating pads rotate ;
The reversing step includes:
A rotation step of rotating the object by pushing down the other end of the arm, the rotation pad a first rotation step of bringing the guard frame extending laterally from the ground into contact with the ground;
After the first rotation step, the object is further rotated by further pushing down the other end of the arm to separate the guard frame from the ground, and the object is reversed from the state gripped in the gripping step. a second rotation step of bringing the device into a state of
Inversion method.

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