JP6512755B2 - Concrete product transport mechanism, concrete product transport carriage, concrete product installation method - Google Patents

Description

  The present invention relates to a transfer mechanism and a transfer carriage for transferring a concrete product to an installation position, and a method for installing the concrete product after transfer.

  As is well known, precast concrete products such as box culverts, retaining wall blocks, U-shaped waterway blocks and L-shaped blocks are installed at predetermined installation locations after being transported to the site.

  However, when laying concrete products in residential areas or agricultural areas, trucks and cranes may not be able to approach the installation site. Then, the conveyance by a trolley | bogie as shown to patent document 1 is proposed. If outline is demonstrated based on FIG. 14, the guide box 2 will be embed | buried under the traveling direction of the traveling path 1 of the trolley | bogie for conveyance, and the guide groove 3 of concave cross-section is formed in it.

  On the other hand, a guiding tool 4 is disposed below the connecting rod 7 connected to the left and right transport wheels of the carriage. The guiding tool 4 includes a caster 5 guided by the guide groove 3, a shaft 6 between the caster 5 and the connecting rod 7, and a rotating body 8 rotatably supported by the shaft 6. There is.

Then, if the running road 1 curve when the transport carriage to move the traveling path 1 is towed, with the rotating body 8 rotates hitting the side wall 3a of the guide groove 3, the guiding device 4 side walls 3a Guiding the transport carriage along the curve by guiding along.

Japanese Patent Application Publication No. 2005-335478

  However, in forming the guide groove 3 of Patent Document 1, it is necessary to prepare an iron formwork or the like and cast concrete, which may make it difficult to simplify the work process and to suppress the cost.

  In particular, since the traveling path 1 is made of concrete, the position of the guide groove 3 can not be changed, and after completion of the construction, the guide groove 3 has to be filled with mortar or the like. It also becomes difficult to control the Furthermore, since the rotating body 9 collides with the side wall 3a, it may be broken, which may also increase parts replacement cost.

  The present invention has been made to solve such problems, and provides a cost-effective transport of concrete products that can be guided along a curve of a transport carriage without forming a guide groove in the foundation concrete travel path. It is the problem to be solved that control and simplification of the work process are attempted.

  The present invention is a conveyance mechanism of a concrete product for conveying a carriage for carriage carrying a concrete product to an installation location, wherein one rail is detachably mounted on a traveling path of the carriage for carriage. The transport carriage may include a direction control unit guided by the rail, and the transport direction of the transport carriage may be controlled by the direction control unit.

  It is preferable that the direction control unit includes a rotating body disposed on the rail, and a contact width of the rotating body with respect to the rail is formed larger than a width of the rail. For example, flanges for preventing derailment may be provided on both ends of the rotating body.

  Further, the present invention is a carriage for transporting a concrete product used for transporting a concrete product to an installation site, comprising: a direction control unit guided by one rail fixed to a traveling path, The direction control unit includes a rotating body disposed on the rail, and a contact surface width of the rotating body with respect to the rail is formed to be larger than a width of the rail, and the rotating body has a derailment preventing member at both ends. It is characterized by having a flange portion of

Furthermore, the present invention relates to a method of installing a concrete product transported by a transportation mechanism of a concrete product at an installation site, comprising the steps of arranging a loading machine on one concrete product installed at the installation site; Attaching the receiving portion of the loading machine to the other concrete product placed on the carriage, moving the transport carriage to move the other concrete product closer to one of the concrete products, and supporting the receiving portion Lifting the other concrete product with heavy machinery,
Moving the transport carriage from under the other concrete product, and lowering and installing the other concrete product by the loading machine.

  According to the present invention, it is possible to guide the carriage for conveyance along a curve when conveying a concrete product without forming a guide groove on the traveling path of the foundation concrete, thereby suppressing costs and simplifying the working process. I can contribute.

The perspective view of the conveyance mechanism of the concrete product concerning the embodiment of the present invention. Same front view. Same side view. AA sectional drawing of FIG. (A) is a plan view of a linear rail body, (b) is a plan view of a curved rail body, (c) is a partial enlarged view showing connection of the rail bodies, and (d) is a rail body fixing means FIG. (A) is a front view of the installation work of the box culvert in the case of work space 600 mm or more, (b) is the same side view, (c) is the same top view. (A) is a front view of the installation work of the box culvert at the installation start point in the case of work space 600-150 mm, (b) is the same side view, (c) is the same top view. (A) is a front view of the installation work of the second and subsequent box culverts in the case of work space 600-150 mm, (b) is the same side view, (c) is the same top view. (A) is a plan view of a jack seat, (b) is a side view, and (c) is a front view. (A) is a front view of the L-shaped block installation work in the case of work space 600 mm or more, (b) is the top view. The top view of the installation work of the 2nd or subsequent L-shaped block in the case of 600-150 mm of work spaces. The elements on larger scale which show the mounting state of the jack seat and jack base to L-shaped block. (A) is a side view of the first step of the installation of the second and subsequent L-shaped blocks in the case of the work space 600 to 150 mm, (b) is a side view of the second step, (c) is the third Side view of the process. Sectional drawing which shows the guide groove of patent document 1, and a guidance tool.

«Conveying mechanism of concrete products»
The conveyance mechanism of the concrete product which concerns on embodiment of this invention based on FIGS. 1-5 is demonstrated. This transport mechanism is used, for example, to transport a group of precast concrete products (hereinafter abbreviated as concrete products) such as a box culvert, a retaining wall block, a U-shaped water channel block, and an L-shaped block to an installation location. .

The concrete product 10 is placed on the transport carriage 13 using a crane or the like, as shown in FIG. The transport carriage 13 travels on the traveling path 12 by pulling, and transports the concrete product 10 to the installation location.

(1) Runway 12
The traveling path 12 is made of foundation concrete (base base), and one rail 14 is detachably attached. The rail 14 is configured by connecting a plurality of rail bodies 14a. The rail members 14a, and a linear type shown in FIG. 5 (a) corresponding to the straight portion of the travel path 12, and the curve type shown in FIG. 5 (b) in accordance with the curved section of the running path 12 is used. The radius of curvature of the curve type rail body 14 a is adjusted in accordance with the traveling path 12.

  Three through holes 14d are formed in each rail body 14a, and the rail body 14a is attached to the traveling path 12 by fastening bolts 16 to the anchors 15 embedded in the traveling path 12 through the respective through holes 14d. There is. Therefore, each rail main body 14 a can be easily removed from the traveling path 12 by releasing the fastening of the bolt 16.

  Moreover, the recessed part 14b is formed in one edge part of each rail body 14a, and the convex part 14c is formed in the other edge part. The two rail members 14a are connected by sequentially fitting the two members 14b and 14c.

(2) Transport truck 13
As shown in FIGS. 1 to 3, the transport carriage 13 includes a pair of front and rear connecting members 17 and a connecting bar 18 for connecting the two connecting members 17. The dolly 20 is connected by a connecting bar 22.

  The wheels 21 are disposed at the lower part of each carriage 20, the front connecting member 17 is connected to the direction control unit 19 to the front connecting bar 22, and the rear connecting member 17 is connected to the rear connecting bar 22 Are linked. As this connection means, for example, both 19 and 22 may be integrally formed, or bolting or welding may be used. Each direction control unit 19 may be only forward or backward.

  As shown in FIG. 4, the direction control unit 19 is rotatably supported by the vertical cross section inverted U-shaped holder 23 coupled to the connection bar 22, the axle 24 between the side plates 23 a of the holder 23, and the axle 24. The holder 23 is provided with the tow connecting portion 29 of FIG. 3.

  The wheel 25 is a cylindrical body disposed on the rail 14 and includes an axially formed through hole 27 and an annular flange portion 28 formed at both ends. The axle 24 is rotatably inserted into the through hole 27, and a bearing 26 is mounted on the inner circumferential surface to facilitate rotation of the wheel 25.

  Further, the length of the outer peripheral surface between the flange portions 28 of the wheels 25, that is, the contact width P to the rail 14 is set longer than the width Q of the rail 14. Here, the contact surface width P has a margin for the width R with respect to the width Q, and the length of the width R corresponds to the installation accuracy of the rail 14 or the curve radius of the curved rail 14a. In the range of 5 to 50 mm.

  According to the transport mechanism of the present embodiment, by placing the concrete product 10 on the transport carriage 13 and then pulling the tow connecting portion 29, the transport carriage 13 starts traveling, and the concrete product 10 is installed. Transport to the place.

At this time, since the wheels 25 are guided by the rails 14, the transport carriage 13 is controlled by the direction control unit 19 to travel on the rails. Therefore, the concrete product 10 can be conveyed along the curve of the traveling path 12 without forming the guide groove 3 of Patent Document 1. At this point, a transport mechanism capable of guiding the transport carriage 13 along a curve when transporting the concrete product 10 is realized with a simple structure

  Here, since the contact width P of the wheel 25 with respect to the rail 14 has a margin of the width R longer than the width Q of the rail 14, even if an installation error of the rail 14 occurs, the width Q The installation error can be absorbed, and smooth transportation becomes possible. In this case, since the flange portion 28 can also prevent the derailment of the wheel 25 from the rail 14, there is no problem in safety.

  In particular, since the load weight of the concrete product is received by the wheel 21, load and resistance of the load weight are not applied to the rail 14 and the wheel 25, and also in this point, smooth transportation is possible.

  Further, since the rail body 14a is attached to the traveling path 12 by fastening the bolt 16, there is no need to form the guide groove 3 in the traveling path 12 as in Patent Document 1, the work process is simplified, It can contribute to shortening of time and control of cost.

  Further, the work of filling the guide groove 3 with mortar or the like can be omitted, and the work process can be simplified also in this respect. In addition, since the rail body 14a can be removed by releasing the fastening of the bolt 16 after the completion of construction and can be reused, it is economically good.

«Concrete product installation method»
Hereinafter, the installation method to the installation place of the concrete product 10 after conveyance is demonstrated. Here, the installation method of the box culvert and the installation method of the L-shaped block will be described as an example.

(1) Box culvert installation example 1
The installation method in the case where the work space for installation work, ie, the space between the box culvert 30 and the earth retaining material 31 can be secured 600 mm or more will be described based on FIG. Note that P in the figure indicates a work space, and the rail 14 is extended to the foundation concrete 32 at the installation site.

  First, the transport carriage 13 carrying the box culvert 30 is transported to the installation start point of the installation location, and the jacks 33 a to 33 d are arranged on the foundation concrete 32. At this time, since the working spaces P are secured, the jacks 33a to 33d are disposed on both sides 30a of the box culvert 30, as shown in FIG. 6 (c).

  Next, after jacking up the box culvert 30 with each of the jacks 33a to 33d, the transport carriage 13 is retracted in the X direction (advancing direction) in FIG. 6B and moved from under the box culvert 30, Spread mortar on Q. After that, the jacks 33a to 33d are jacked down, the box culvert 30 is installed on the base liner 34, and it is confirmed whether or not the planned position and height of the construction are satisfied. Perform installation work of

(2) Box culvert installation example 2
The installation method in case work space P of installation work is 600 mm-150 mm based on Drawing 7 and Drawing 8 is explained. Here, the installation start point box culvert 30 (hereinafter referred to as box culvert 30-1) and the box culvert 30 installed next (hereinafter referred to as box culvert-30-2) will be separately described.

[Box culvert 30-1]
In the case of the box culvert 30-1, almost the same operation as in the case where the work space P can be secured 600 mm or more is performed. However, because the work space P is narrow, as shown in FIGS. 7A to 7C, the jacks 33a to 33d are disposed before and after the box culvert 30-1.

  Thus, when the work space P is 600 mm to 150 mm, the box culvert 30-1 can be jacked up, and the installation work of the box culvert 30-1 can be performed.

[Box culvert 30-2]
The installation method of the box culvert 30-2 is demonstrated based on FIG. In the box culvert 30-2, since the box culvert 30-1 is installed at the front, the jacks 33a and 33c can not be disposed as shown in FIG.

Therefore, as shown in FIGS. 8A to 8C, the jacks 33a and 33c are disposed in the box culvert 30-1, and the bottom wall 30b of the box culvert 30-2 is supported by the jacks 33a and 33c. The jack seat 35 was arranged. The jacks 33b and 33d are arranged in the same manner as in FIG.

As shown in FIGS. 9 (a) to 9 (c), each of the jack seats 35 is formed in an inverted L-shape in longitudinal section, and is attached to the mounting plate 36 attached to the inner surface of the bottom wall 30b of the box culvert 30-2. A mounting portion 36, a receiving plate 38 arranged in a step-like shape, and a side plate 37 between the two are provided. The mounting plate 36 is formed with four through holes 36a. The jack receiving seat 35 is attached to the inner surface of the bottom wall 30b of the box culvert 30-2 by fastening a bolt to an anchor (not shown) embedded in the bottom wall 30b via the through holes 36a.

  At this time, since the receiving plate 38 of each jack receiving seat 35 is supported by the jacks 33a and 33c as shown in FIG. 8B, it is possible to jack up the box culvert 30-2 by the jacks 33a to 33d. it can. Thereafter, the box culvert 30-2 is installed in the same procedure as the box culvert 30-1.

  If this procedure is repeated for the subsequent box culverts 30, all the box culverts 30 can be installed even if the work space P is 600 mm to 150 mm.

(3) L-shaped block installation example 1
An installation method will be described based on FIG. 10 in the case where the work space P for installation work, that is, the distance between the side wall 45a of the L-shaped block 45 and the earth retaining material 31 can be secured 600 mm or more.

  First, the transport carriage 13 carrying the L-shaped block 45 is transported to the installation start point, and the jacks 33 a to 33 d are disposed on the foundation concrete 32. Here, as shown in FIG. 10 (b), the jacks 33b and 33d are disposed on the front of the bottom wall 45b, and the jacks 33a and 33c are disposed on both sides of the bottom wall 45b.

  Next, the L-shaped block 45 is jacked up with the jacks 33a to 33d, the transporting carriage 13 is moved from under the L-shaped block 45, and the mortar is spread in the transporting carriage space Q. After that, each jack 33 is jacked down, the L-shaped block 45 is installed on the base liner 34, and it is confirmed whether or not the planned position and height of the construction is satisfied. Perform the installation work of the block 45.

(4) L-shaped block installation example 2
The installation method in case work space P is 600 mm-150 mm based on Drawing 11-Drawing 13 is explained. Here, a method will be described in which the L-shaped block 45 is installed at the installation start point and then the next L-shaped block 45 is installed adjacent to it. Hereinafter, the L-shaped block at the installation start point is denoted by 45-1, and the L-shaped block adjacent to the L-shaped block 45-1 is denoted by 45-2.

  In this case, as shown in FIG. 11, another type of jack seat 35 'is attached to the inner surface of the side wall 45a of the L-shaped block 45-2, while the side wall 45a of the L-shaped block 45-1 is The jack base 47 which installs the jack 33a is attached to the inner surface.

  The jack receiving seat 35 'is, as shown in FIG. 12, a mounting plate 36' fixed to the inner surface of the side wall 45a of the L-shaped block 45-2 and a receiving plate 37 'erected on the mounting plate 36'. And four through holes 36a 'are formed in the mounting plate 36'. A jack receiving portion 35 'is attached to the side wall 45a by fastening a bolt to an anchor (not shown) embedded in the side wall 45a of the L-shaped block 45-2 through the through holes 36a'.

  On the other hand, the jack base 47 includes a mounting plate 47a fixed to the inner surface of the side wall 45a of the L-shaped block 45-1 and a mounting plate 47b erected on the mounting plate 47a. Each through hole 47c is formed. A jack base 47 is attached to the side wall 45a by fastening a bolt to an anchor (not shown) embedded in the side wall 45a of the L-shaped block 45-1 through the through holes 47a.

  The installation method of the L-shaped block 45-2 will be described based on FIG. 13. First, as shown in FIG. 13A, the carriage for transporting the L-shaped block 45-2 to which the jack seat 35 'is attached 13 is moved to the L-shaped block 45-1 to which the jack base 47 is attached, and both 45-1 and 45-2 are made to approach.

  Next, as shown in FIG. 13B, the jacks 33a are installed on the mounting plate 47b of each jack base 47, and the claws 49 of the jacks 33a support the receiving plate 37 'of the jack receiving seat 35'. Jack up the L-shaped block 45-2 at 33a to 33d. After moving the transport carriage 13 in this state, the L-shaped block 45-2 is supported by the keep pedestal 48 and the mortar is spread.

  Then, as shown in FIG. 13C, after removing the holding pedestal 48, the jacks 33a to 33d are jacked down to install the L-shaped block 45-2 on the base liner 34.

  After the installation, it is confirmed whether the planned position and height of the construction are satisfied, and if satisfied, the installation work of the L-shaped block 45 transported next is performed. This makes it possible to install the L-shaped block 45 even when the working space P is 600 mm to 150 mm.

DESCRIPTION OF SYMBOLS 10 ... Concrete product 12 ... Traveling path 13 ... Carrier truck 14 ... Rail 19 ... Direction control part 25 ... Wheel (rotary body)
28: Flange portion 30: Box culvert 33a: Jack (heavy-duty machine)
35, 35 '..... Jack seat (receiver)
45 ... L shaped block

Claims (3)

It is a conveyance mechanism of a concrete product which conveys a carriage for carriage carrying a concrete product to an installation place by pulling,
While one flat rail is detachably mounted on the traveling path of the transport carriage,
The transport carriage is a placement unit on which the concrete product is placed;
And a pair of direction control units which are guided by the rail and disposed at the front and back of the placement unit,
The direction control unit includes a pulling connection for the pulling and a rotating body disposed on the rail,
The contact width of the rotating body with respect to the rail is formed larger than the width of the rail,
The rotating body has flange portions for preventing derailment at both ends,
By pulling the tow joint, the transport carriage starts traveling on the rail,
A conveyance mechanism of a concrete product, wherein a direction of conveyance of the carriage for conveyance is controlled by the direction control unit. A truck for transporting concrete products that is used to transport concrete products to installation locations by towing,
A placement unit on which the concrete product is placed;
And a pair of direction control units which are guided by a flat plate-like rail detachably mounted on the traveling path and disposed before and after the placing unit.
The direction control unit includes a pulling connection for the pulling and a rotating body disposed on the rail,
The contact width of the rotating body with respect to the rail is formed larger than the width of the rail,
The truck for transporting concrete products, wherein the rotating body is provided with flange portions for preventing derailment at both ends. A method of installing a concrete product transported by the transportation mechanism of a concrete product according to claim 1 at a setting location,
Placing a heavy lifting machine on one of the concrete products installed at the installation site;
Attaching the receiving portion of the loading machine to the other concrete product placed on the transport carriage;
Moving the transport carriage to bring the other concrete product close to one concrete product and lifting the other concrete product with the loading machine supporting the receiving part;
Moving the transport carriage from under the other concrete product, and lowering and installing the other concrete product by the loading machine;
A method of installing a concrete product, comprising:

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