JP2015223937A - Transportation mechanism of concrete product, dolly for transportation of concrete product, and installation method of concrete product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transportation mechanism of a concrete product which guides a transportation dolly along a curve without forming a guide groove in the concrete and achieve reduction of costs and simplification of work process.SOLUTION: One rail 14 is detachably attached to a travel path 12 of a transportation dolly of a concrete product. The transportation dolly includes a direction control part 19 which is guided by the rail 14. The direction control part 19 includes a wheel 25 disposed on the rail 14. A contact surface width P of the wheel 25 relative to the rail 14 is formed larger than a width of the rail 14. Further, flange parts 28 are formed at both end parts of the wheel 25.

Description

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

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

  However, when laying concrete products in residential areas or agricultural areas, trucks and cranes may not be close to the installation location. Therefore, conveyance by a carriage as shown in Patent Document 1 has been proposed. The outline will be described with reference to FIG. 14. A guide box 2 is embedded in the traveling path 1 of the transport carriage along the traveling direction, and a guide groove 3 having a concave cross section is formed.

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

  If the travel path 1 is curved when the transport carriage is pulled and moves on the travel path 1, the guide 9 is rotated while the rotating body 9 hits the side wall 3 a of the guide groove 3 and the guide 4 is moved to the side wall 3 a. Is guided along the curve.

JP 2005-335478 A

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

  In particular, since the travel path 1 is made of concrete, the position of the guide groove 3 cannot be changed, and it must be filled with mortar after the construction is completed, which further increases the work process and costs. It will also be difficult to control. Further, since the rotating body 9 collides with the side wall 3a, the rotating body 9 may be damaged, and there is a possibility that the part replacement cost is increased.

  The present invention has been made to solve such a problem, and provides a conveyance of a concrete product that can guide a conveyance carriage along a curve without forming a guide groove in a running path of the basic concrete, and can reduce the cost. The solution is to control and simplify the work process.

  The present invention is a concrete product transport mechanism for transporting a transport cart carrying a concrete product to an installation location, wherein one rail is detachably attached to the travel path of the transport cart. The transfer carriage includes a direction control unit guided by the rail, and the transfer direction of the transfer carriage is controlled by the direction control unit.

  Preferably, 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 larger than a width of the rail. For example, flanges for preventing derailment can be provided at both ends of the rotating body.

  Further, the present invention is a carriage for transporting concrete products used for transporting concrete products to an installation place, comprising a directional control unit guided by a single 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 larger than a width of the rail, and the rotating body is used for preventing derailment at both ends. It is characterized by providing the flange part.

Further, the present invention is a method of installing a concrete product conveyed by a concrete product conveying mechanism at an installation location, the step of placing a heavy machine on one concrete product installed at the installation location, and the transportation Attaching the receiver of the heavy machine to the other concrete product placed on the carriage, and moving the transport carriage to bring the other concrete product closer to the one concrete product and supporting the receiver Lifting the other concrete product with a heavy machine,
Moving the carriage from below the other concrete product, and lowering and installing the other concrete product by the heavy machine.

  According to the present invention, it is possible to guide a carriage for conveyance along a curve when conveying concrete products without forming guide grooves in the running path of the basic concrete. In this respect, the cost can be reduced and the work process can be simplified. Can contribute.

The perspective view of the conveyance mechanism of the concrete product which concerns on embodiment of this invention. The front view. The 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 partially enlarged view showing the connection between the rail bodies, and (d) is a fixing means for the rail body FIG. (A) is a front view of the box culvert installation work when the work space is 600 mm or more, (b) is a side view thereof, and (c) is a plan view thereof. (A) is the front view of the installation work of the box culvert of the installation start point in the case of work space 600-150mm, (b) is the side view, (c) is the top view. (A) is a front view of the installation work of the second and subsequent box culverts in the case of a work space of 600 to 150 mm, (b) is a side view thereof, and (c) is a plan view thereof. (A) is a top view of a jack seat, (b) is the side view, (c) is the front view. (A) is a front view of the installation work of the L-shaped block in the case of work space 600mm or more, (b) is the top view. The top view of the installation work of the 2nd or more L-shaped block in the case of work space 600-150mm. The elements on larger scale which show the attachment state of the jack seat to the L-shaped block, and a jack base. (A) is a side view of the first step of the installation work of the second and subsequent L-shaped blocks in the case of a work space of 600 to 150 mm, (b) is a side view of the second step, and (c) is the third step. The side view of a process. Sectional drawing which shows the guide groove and guide implement of patent document 1. FIG.

≪Concrete product transport mechanism≫
A concrete product transport mechanism according to an embodiment of the present invention will be described with reference to FIGS. This transport mechanism is used to transport a group of precast concrete products (hereinafter abbreviated as concrete products) such as box culverts, retaining wall blocks, U-shaped water channel blocks, and L-shaped blocks to the installation site. .

  If the whole structure is demonstrated based on FIG. 1, the concrete product 10 will be mounted in the trolley | bogie 13 for conveyance using a crane etc. FIG. The transport carriage 13 travels on the traveling path 12 by towing and transports the concrete product 1 to the installation location.

(1) Road 12
The travel path 12 is made of foundation concrete (foundation base), and one rail 14 is detachably attached. The rail 14 is configured by connecting a plurality of rail bodies 14a. For this rail body 14 a, the straight type of FIG. 5A corresponding to the straight portion of the traveling path 21 and the curved type of FIG. 5B corresponding to the curved portion of the traveling path 21 are used. The curved radius of the curved rail body 14 a is adjusted according to the travel 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. Yes. Therefore, each rail main body 14a 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 rail bodies 14a are connected by sequentially fitting the both 14b and 14c.

(2) Carriage for transportation 13
As shown in FIGS. 1 to 3, the transport carriage 13 includes a pair of front and rear connecting bodies 17 and a connecting bar 18 that connects both connecting bodies 17, and each connecting body 17 is a pair of left and right on which the concrete product 10 is placed. A cart 20 is connected by a connecting bar 22.

  Wheels 21 are arranged at the bottom of each carriage 20, the front connecting body 17 is connected to the front connecting bar 22 with the direction control unit 19, and the rear connecting body 17 is connected to the rear connecting bar 22 with the direction control unit 19. Are connected. As this connecting means, for example, both 19 and 22 may be integrally formed, or bolting or welding may be used. In addition, each direction control part 19 is good also only as front or back.

  As shown in FIG. 4, the direction control unit 19 includes an inverted U-shaped holder 23 connected to the connection bar 22, an axle 24 between both side plates 23 a of the holder 23, and a shaft 24 that is rotatable about the axle 24. 3 and the holder 23 is provided with a traction connecting portion 29 shown in FIG.

  The wheel 25 is formed of a cylindrical body disposed on the rail 14 and includes a through hole 27 formed in the axial direction and annular flange portions 28 formed at both ends. The axle shaft 24 is rotatably inserted into the through-hole 27, and a bearing (bearing) 26 is mounted on the inner peripheral surface to facilitate the rotation of the wheel 25.

  Further, the length of the outer peripheral surface between the flange portions 28 of the wheel 25, that is, the contact surface width P to the rail 14 is set to be 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 depends on the installation accuracy of the rail 14 and the curve radius of the curved rail body 14a. Is selected within a range of 5 mm to 50 mm.

  According to such a transport mechanism of the present embodiment, the transport cart 13 starts traveling by installing the concrete product 10 by pulling the traction connecting portion 29 after placing the concrete product 10 on the transport cart 13. Transport to location.

  At this time, since the wheel 15 is guided to the rail 14, the transport carriage 13 travels on the rail with the direction control unit 19 controlling the transport direction. 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. In this respect, a transport mechanism capable of guiding the transport carriage 13 along the curve when transporting the concrete product 10 is realized with a simple structure.

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

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

  Moreover, since the rail body 14a is attached to the travel path 12 by fastening the bolt 16, it is not necessary to form the guide groove 3 in the travel path 12 as in Patent Document 1, and the work process is simplified, Contributes to shortening of time and cost control.

  Further, the work of filling the guide groove 3 with mortar or the like can be omitted, and the work process is simplified in this respect. In addition, since the rail body 14a can be removed and reused by releasing the fastening of the bolt 16 after completion of the construction, 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, a box culvert installation method and an L-shaped block installation method will be described as an example.

(1) Box culvert installation example 1
Based on FIG. 6, the installation method when the work space of the installation work, that is, the distance between the box culvert 30 and the earth retaining material 31 can be secured 600 mm or more will be described. In addition, P in a figure shows a work space and the rail 14 shall be extended to the foundation concrete 32 of an installation place.

  First, the transport carriage 13 on which the box culvert 30 is placed is transferred to the installation start point of the installation place, and jacks 33 a to 33 d are arranged on the foundation concrete 32. At this time, since the working space P is secured, the jacks 33a to 33d are arranged on both sides 30a of the box culvert 30 as shown in FIG.

  Next, after the box culvert 30 is jacked up by the jacks 33a to 33d, the transport carriage 13 is moved backward from the bottom of the box culvert 30 in the X direction (traveling direction) in FIG. Spread mortar on Q. Thereafter, 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 construction position / height is satisfied. Perform the installation work.

(2) Box culvert installation example 2
An installation method in the case where the work space P of the installation work is 600 mm to 150 mm will be described with reference to FIGS. 7 and 8. Here, the explanation will be divided into a box culvert 30 (hereinafter referred to as box culvert 30-1) as an installation start point and a box culvert 30 (hereinafter referred to as box culvert-30-2) to be installed next.

[Box culvert 30-1]
In the case of the box culvert 30-1, almost the same operation is performed as when the work space P can be secured 600 mm or more. However, since the work space P is narrow, the jacks 33a to 33d are arranged in front of and behind the box culvert 30-1 as shown in FIGS.

  As a result, when the work space P is 600 mm to 150 mm, the box culvert 30-1 can be jacked up, and the box culvert 30-1 can be installed.

[Box culvert 30-2]
A method of installing the box culvert 30-2 will be described with reference to FIG. Since the box culvert 30-1 is installed in the front of the box culvert 30-2, the jacks 33a and 33c cannot be arranged as shown in FIG.

  Therefore, as shown in FIGS. 8A to 8C, jacks 33a and 33c are arranged in the box culvert 30-1, and the bottom wall 40 of the box culvert 30-2 is supported by the jacks 33a and 33c. A jack seat 35 is arranged. The jacks 33b and 33d are arranged in the same manner as in FIG.

  As shown in FIGS. 9A to 9C, each jack receiving seat 35 is formed in an inverted L-shaped longitudinal section and is attached to an inner surface of the bottom wall 40 of the box culvert 30-2. The mounting portion 36, a receiving plate 38 arranged in a stepped shape, and a side plate 37 therebetween are formed. The mounting plate 36 has four through holes 36a. The jack seat 35 is attached to the inner surface of the bottom wall 40 of the box culvert 30-2 by fastening bolts to anchors (not shown) embedded in the bottom wall 40 through 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, the box culvert 30-2 can be jacked up 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, it is possible to install all the box culverts 30 even when the work space P is 600 mm to 150 mm.

(3) L-shaped block installation example 1
Based on FIG. 10, the installation method when the work space P of the 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 will be described.

  First, the transport carriage 13 on which the L-shaped block 45 is placed is transferred to the installation start point, and jacks 33 a to 33 d are arranged on the foundation concrete 32. Here, as shown in FIG. 10B, the jacks 33b and 33d are arranged on the front surface of the bottom wall 45b, and the jacks 33a and 33c are arranged on both side surfaces of the bottom wall 45b.

  Next, the L-shaped block 45 is jacked up by the jacks 33a to 33d, the transport carriage 13 is moved from the bottom of the L-shaped block 45, and the mortar is spread on the transport cart space Q. After that, each jack 33 is jacked down, and an L-shaped block 45 is installed on the base liner 34 to check whether the planned position and height of the construction are satisfied. Installation of block 45 is performed.

(4) Installation example 2 of L-shaped block
An installation method when the work space P is 600 mm to 150 mm will be described with reference to FIGS. Here, a method of installing the next L-shaped block 45 adjacently after installing the L-shaped block 45 at the installation start point will be described. Hereinafter, the L-shaped block of the installation start point is denoted as 45-1, and the L-shaped block adjacent to the L-shaped block 45-1 is denoted as 45-2.

  In this case, as shown in FIG. 11, another type of jack receiving 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 attached. A jack base 47 for installing the jack 33a is attached to the inner surface.

  As shown in FIG. 12, the jack receiving seat 35 'includes 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'. The jack receiving portion 35 ′ is attached to the side wall 45 a by fastening a bolt to an anchor (not shown) embedded in the side wall 45 a of the L-shaped block 45-2 through each through hole 36 a ′.

  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. A number of through holes 47c are formed. The 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 via each through hole 47a.

  The method for installing the L-shaped block 45-2 will be described with reference to FIG. 13. First, as shown in FIG. 13A, the carriage for the L-shaped block 45-2 to which the jack receiving 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 brought close to each other.

  Next, as shown in FIG. 13B, the jack 33a is installed on the mounting plate 47b of each jack base 47, and the jack plate 49 'of the jack receiving seat 35' is supported by the claw portion 49 of the jack 33a. Jack up L-shaped block 45-2 at 33a-33d. After the transfer carriage 13 is moved 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. 13 (c), after the keep pedestal 48 is removed, the jacks 33 a to 33 d are jacked down, and the L-shaped block 45-2 is installed on the base liner 34.

  After the installation, it is confirmed whether or not the planned construction position / height is satisfied, and if it is satisfied, the installation work of the L-shaped block 45 conveyed next is performed. Thus, the L-shaped block 45 can be installed even when the work space P is 600 mm to 150 mm.

DESCRIPTION OF SYMBOLS 10 ... Concrete product 12 ... Traveling path 13 ... Carriage for conveyance 14 ... Rail 19 ... Direction control part 25 ... Wheel (rotary body)
28 ... Flange 30 ... Box culvert 33a ... Jack
35, 35 '... Jack seat (receiving part)
45 ... L-shaped block

Claims (5)

A transport mechanism for a concrete product for transporting a transport cart carrying a concrete product to an installation place,
While one rail is detachably attached to the travel path of the carriage, the carriage has a direction control unit guided by the rail,
A transport mechanism for a concrete product, wherein a transport direction of the transport carriage is controlled by the direction control unit. The direction control unit includes a rotating body disposed on the rail,
2. The concrete product transport mechanism according to claim 1, wherein a width of a contact surface of the rotating body with respect to the rail is formed larger than a width of the rail. The said rotary body is provided with the flange part for derailment prevention at both ends. The conveyance mechanism of the concrete product of Claim 1 characterized by the above-mentioned. A truck for transporting concrete products used to transport concrete products to an installation site,
A directional control unit guided by a single rail detachably attached to the traveling path;
The direction control unit includes a rotating body disposed on the rail,
The contact surface width of the rotating body with respect to the rail is formed larger than the width of the rail,
The said rotary body is provided with the flange part for derailment prevention at both ends, The cart for conveyance of a concrete product characterized by the above-mentioned. A method of installing the concrete product conveyed by the concrete product conveyance mechanism according to claim 1 to an installation place,
Placing a heavy machine on one concrete product installed at the installation location;
Attaching the receiving part of the heavy machine to the other concrete product placed on the carriage,
Moving the transport carriage to bring the other concrete product close to one concrete product, and lifting the other concrete product with the heavy machine supporting the receiving portion;
Moving the carriage from below the other concrete product and lowering and installing the other concrete product by the heavy machine;
A method for installing a concrete product, comprising:

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