JP2007332711A - Concrete block carrying device and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive and economical concrete block carrying device and method, in which a concrete block that is an object to carry can be carried, even if its size varies, by use of the same carrying device. <P>SOLUTION: In this concrete block carrying device 1 or method, a plurality of chill rollers 16 is connected through a connecting member 17, a traction member 14 is connected to a concrete block 2 placed on the plurality of chill rollers 16, and the traction member 14 is towed by a winch 15, whereby the concrete block 2 is carried. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a concrete block carrying device and a carrying method, and is suitable as a concrete block carrying device and a carrying method such as a box culvert.

  Conventionally, box culverts, which are precast concrete blocks, are laid and connected in a plurality to form underdrains such as sewers, common grooves, and underground passages. In such laying work of a box culvert, construction by a suspension method using a crane is common. However, depending on the conditions of the construction site, such as narrow roads, dense houses on both sides of the construction site, or under bridges, excavation may not be possible beyond the width of the box culvert. In such a case, since a large machine such as a crane cannot be used to move the box culvert, the box culvert is temporarily placed in a place where it can be installed by the crane, and then the box culvert is moved to a predetermined installation place by using some method. It is necessary to carry and move.

  As shown in FIG. 8, as an installation method of the box culvert in such a construction site, an H-section steel 102 is laid on the basic concrete 105, and a bearing ball 103 is disposed in a recess 102 a of the H-section steel 102, so The box culvert 101 is loaded onto the H-shaped steel 102 by a crane, and the box culvert 101 is horizontally pulled and installed using the rolling contact between the protrusion 104 provided on the lower surface 101a of the box culvert 101 and the bearing ball 103. A box bearing construction method has been proposed that is installed and fixed at a position (see, for example, Patent Document 1).

In addition, a concrete block transport device has been proposed in which a caster is attached to a cargo handling pallet and a box culvert placed on the cargo handling pallet is transported by a forklift. (For example, see Patent Documents 2 and 3).
Japanese Patent Laid-Open No. 2000-293938 JP 2002-274793 A JP 2003-239366 A

  However, in the box bearing method disclosed in Patent Document 1, the protrusion 104 must be provided on the lower surface 101a of the bottom plate of the box culvert 101 to be installed, which requires a special formwork, and the manufacturing cost is high. The problem of becoming. In addition, in this box bearing method, the installation position of the box culvert is determined by the rail. Therefore, if the concrete blocks are to be connected to each other well, it is important to manage the height difference in the arrangement of the rails, which increases the management cost. There was also a problem.

  In addition, in a concrete block transporting apparatus in which a caster is attached to the cargo handling pallet disclosed in Patent Documents 2 and 3 and a box culvert placed on the cargo handling pallet is transported by a forklift, an inexpensive and versatile electric chill hole is provided. There was a problem that could not be used. Furthermore, when the size of the box culvert as the object to be transported is greatly different, there has been a problem that a transport device corresponding to the size of the box culvert has to be separately procured.

  In view of the above-described problems of the prior art, an object of the present invention is to provide a concrete block transporting apparatus and transporting method that are inexpensive and economical. It is another object of the present invention to provide a concrete block transport device that can be transported by the same transport device even if the size of the box culvert being transported is greatly different.

  The invention described in claim 1 includes a plurality of heavy trucks connected by a connecting member, a traction member coupled to a concrete block placed on the plurality of heavy trucks, and pulling the traction member to move the concrete block. A concrete block carrying device comprising a winch for carrying.

  The invention according to claim 2 includes a plurality of heavy trucks connected by a connecting member, and a forklift that transports the concrete blocks by pressing the concrete blocks placed on the heavy trucks. It is a concrete block carrying device.

  The invention according to claim 3 is characterized in that, in the concrete block conveying apparatus according to claim 1 or 2, the length of the connecting member can be changed according to the size of the concrete block.

  Invention of Claim 4 is equipped with the nail | claw jack used for loading or unloading the said concrete block to the heavy trolley | bogie in the concrete block conveying apparatus of any one of Claims 1-3. Is.

  According to a fifth aspect of the present invention, a plurality of heavy trucks are connected by a connecting member, a traction member is coupled to a concrete block placed on the plurality of heavy trucks, and the traction member is pulled by a winch or a forklift. A concrete block carrying method characterized by carrying the concrete block.

  The invention according to claim 6 is a concrete characterized in that a plurality of heavy trucks are connected by a connecting member, and the concrete blocks placed on the heavy trucks are pressed by a forklift to transport the concrete blocks. It is a block transportation method.

  According to the concrete block transporting apparatus of claim 1, since the plurality of heavy trucks are connected by the connecting member and the concrete block is pulled, the synchronous movement of the plurality of heavy trucks is facilitated, and the transport position accuracy of the concrete block is improved. Can be increased. Moreover, since general-purpose products, such as a chill roller which is a heavy material cart, and an electric chill hole which is a winch, can be used except for the connecting member, an inexpensive concrete block transport device can be provided. Furthermore, by using an electric chill hole as a traction tool, even those who do not have special skills can safely and quickly transport concrete blocks.

  According to the concrete block transport device of claim 2, by appropriately changing the pressing position of the forklift, the concrete block can be easily transported along the transport movement path even if there is a curve or a broken line shape in the transport movement path. can do.

  According to the concrete block conveying device according to claim 3, since the length of the connecting member can be changed according to the size of the concrete block, concrete blocks of various sizes can be used even with one type of conveying device. It can be transported efficiently.

  According to the concrete block conveying device of the fourth aspect, since the claw jack is used to load or unload the concrete block on the heavy truck, the concrete block can be easily loaded or unloaded even in a narrow place where the crane cannot be put. .

  According to the concrete block conveying method of the fifth aspect, the same effect as that of the first aspect of the invention can be achieved.

  According to the concrete block conveying method of the sixth aspect, the same effect as the effect of the invention of the second aspect can be obtained.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a front view showing a state in which a concrete block 2 is loaded on a concrete block carrying device 1 according to the present invention. FIG. 2 is a view taken along the line AA in FIG. It is a top view. 3 is a left side view of the concrete block conveying apparatus 1 shown in FIG. 2, and FIG. 4 is an enlarged view thereof.

  As shown in FIG. 1, in a groove 3 formed by excavating the ground, temporary materials such as corrugated steel are driven into both sides of the groove 3 to prevent collapse, and temporary side walls 4 are provided. And after laying stone materials, such as a crushed stone, in the bottom part 5, the foundation concrete 6 is laid. In addition, a reinforcing member 7 may be installed on the upper portion of the groove 3 as necessary.

  The box culvert 2 is made of precast concrete, and includes a bottom plate 8, side plates 9, and a top plate 10. The box culvert 2 is a rectangular column having a hollow cross section. The bottom plate 8 is provided with through holes 12 at a plurality of locations. A locking tool 13 is inserted into the through hole 12, and a wire rope 14 for pulling the box culvert 2 is locked to the locking tool 13. It has been made possible. The through-hole 12 is provided for inserting a locking tool 13 for traction, and a grout material is provided in the space between the foundation concrete 6 and the bottom plate 8 in order to fix the box culvert 2 in a fixed position. It also serves as a grout inlet for pouring. The box culvert 2 is placed on the transport device 1 according to the present invention from the entrance of the groove 3 by a crane or the like.

  The wire rope 14 which is a pulling member locked to the locking tool 13 is pulled by an electric chill hole 15 which is a winch fixed to the foundation concrete 6 ahead in the moving direction. In addition, it can replace with the electric chill hole 15 and can also be pulled with a forklift. Furthermore, the box culvert 2 can be pushed and moved by a forklift from the rear in the moving direction. Here, commercially available general-purpose products can be used for the electric chill hall 15 and the forklift.

  As shown in FIG. 2, in this embodiment, chill rollers 16 serving as heavy trucks are provided at four locations. As the chill roller 16, an inexpensive general-purpose chill roller can be used. The arrangement position of the chill roller 16 can be arranged at an appropriate position according to the size of the box culvert 2 to be transported. Specifically, it is necessary to arrange the box culvert 2 so that the four corners in plan view are placed on the chill roller 16. In this embodiment, the box culvert 2 is transported and moved in the direction of the arrow, but the two front and rear chill rollers are connected to each other by the left and right connecting members 17. The connecting member 17 and the front and rear chill rollers 16 and 16 are rotatably connected by pin coupling. Specifically, a connecting pin 22 is inserted and connected to a connecting hole 18 provided at both ends of the connecting member 17 and a connecting hole 20 provided in a connecting piece 19 of each chill roller.

  In addition, since the chill roller which is a heavy material cart can use a commercially available general-purpose product, a detailed description is omitted, but the general structure of the chill roller is a plurality of rollers, a cart body pivotally supported by the roller, The turntable is provided on the main body of the carriage so as to be turnable. As a result, by operating the steering shaft 30 attached in front of the chill roller 16, the chill roller can be pulled without meandering.

  Here, the connecting member 17 includes a front connecting member 23 and a rear connecting member 24. Both the front connecting member 23 and the rear connecting member 24 have a hollow box shape with a rectangular cross section. As shown in FIG. 5, the outer surface shape of the cross section of the front connecting member 23 is slightly smaller than the inner shape of the cross section of the rear connecting member 24. As a result, the front connecting member 23 can be inserted into and pulled out from the hollow portion of the rear connecting member 24, and the length of the connecting member 17 composed of the front connecting member 23 and the rear connecting member 24 is made the size of the concrete block 2. It can be changed as appropriate. Specifically, the total length of the connecting member 17 can be changed by inserting the position adjusting pins 27 into the position adjusting holes 25 and 26 provided on both side surfaces of the cross section of the front connecting member 23 and the rear connecting member 24. Has been. Therefore, position adjusting holes 25 and 26 are provided at a plurality of positions at equal pitches on both side surfaces of the front connecting member 23 and the rear connecting member 24 in the cross section. Here, a lubricant such as grease is applied to the outer surface of the front connecting member 23, the inner surface of the rear connecting member 24, and the surface of the position adjusting pin 27, so that each member can be smoothly slid. Sliding is ensured.

  The concrete block 2 is placed on the chill roller 16 disposed at the four corners, and is not placed on the connecting member 17. Therefore, when the connecting member 17 is assumed to be a single beam, a lateral load is not applied to the connecting member 17, and a load is applied only in the longitudinal direction of the connecting member 17. The connection of the connection member 24 has sufficient strength even with pin connection.

  The left and right rear chill rollers 16, 16 connected to the front chill roller 16 by the connecting member 17 are further connected by a horizontal connecting member 28. The horizontal connecting member 28 is disposed on the upper part of the two rear chill rollers 16 and 16 and is connected to the rear chill rollers 16 and 16 by bolts or the like. By disposing the horizontal connecting member 28 on the upper part of the rear chill rollers 16, 16, it is possible to provide a reference surface 29 when the concrete block 2 is loaded on the transport device 1. That is, if the rear end surface of the concrete block 2 is brought into contact with the reference surface 29 of the lateral connecting member 28, the concrete block 2 can be easily placed at an appropriate position on the transport device 1.

  Further, unlike the connecting member 17 described above, the lateral connecting member 28 is formed of an integral channel steel, and has a plurality of connecting holes (not shown) provided in advance in a portion connected to the rear chill rollers 16 and 16. Used to be combined with the rear chill rollers 16,16. Therefore, the distance between the left and right rear chill rollers 16, 16 can be changed by selecting the coupling hole to be coupled.

  Next, the conveyance method of the concrete block 2 using the concrete block conveyance apparatus 1 by a present Example is demonstrated based on FIG. FIG. 6A shows a state in which a concrete block is placed on the transport device 1 assembled on the foundation concrete 6 using a crane. When the crane cannot be used, the concrete block 2 can be lifted using the claw jack 11, and then the transport device 1 can be inserted under the concrete block 2. Here, as the electric chill hole 15, a commercially available general-purpose product can be used. FIG. 6B shows a state where the wire rope 14 locked to the locking tool 13 inserted into the through hole of the concrete block 2 is pulled using the electric chill hole 15 fixed on the foundation concrete 6. The chill roller can be pulled without meandering by operating the steering shaft 30 attached in front of the chill roller 16. FIG. 6C shows a state in which the first concrete block 2 is pulled to near a predetermined position. FIG. 6 (d) shows a state where the first concrete block 2 has been transported to a predetermined position and the concrete block 2 is unloaded from the transport device 1. At that time, the conveying device 1 can be pulled out from under the concrete block 2 using the claw jack 11. FIG. 6 (e) shows a state where the second concrete block 2 is placed on the transport device 1. This corresponds to FIG. 6A in which the first concrete block is placed on the transport device. FIG. 6 (f) shows a state where the second concrete block 2 is being pulled, and corresponds to FIG. 6 (b). FIG. 6G shows a state in which the second concrete block 2 is pulled to a position close to a predetermined position, and corresponds to FIG. FIG. 6 (h) shows a state where the second concrete block 2 has been transported to a predetermined position and the concrete block 2 is unloaded from the transport device 1, and corresponds to FIG. 6 (d). . FIG. 6 (i) shows a state in which the third concrete block 2 is placed on the transport device 1, and corresponds to FIG. 6 (a). In this way, a continuous sewer or the like can be constructed by separately transporting, connecting and installing the concrete blocks 2 produced separately.

  Next, the construction method of the concrete block 2 using the conveying apparatus 1 by a present Example is demonstrated. As shown in Fig. 7, the rough construction method is as follows: start 31, ink brush 32, level adjustment 33, transport device assembly 34, concrete block transport installation 35, vertical tightening tension 36, mortar grout 37 To finish. Here, the conveyance device 1 according to this embodiment is directly related to the conveyance device assembly 34 and the concrete block conveyance installation 35 steps. Assembling the transporting device 34 means assembling four chill rollers 16 on the basic concrete 6 by connecting members 17 and adjusting the length of the connecting member 17 according to the size of the concrete block 2 to be transported. Need to be assembled. The concrete block transport installation 35 step means that the concrete block 2 is placed on the transport device 1 and transported to a predetermined installation position using the electric chill roller 15 or the forklift. In addition, the vertical tightening tension work 36 which is the subsequent process means that each concrete block separately installed is tension-fixed, and the mortar grout work 37 is formed between the foundation concrete 6 and the concrete block 2. It refers to pouring the grout material into the space created and fixing it.

  According to the concrete block transporting apparatus and transporting method according to the above-described embodiment, the plurality of chill rollers 16 are connected by the connecting member 17 and the concrete block 2 is pulled, so that the synchronous movement of the plurality of chill rollers 16 is facilitated. The carrying position accuracy can be increased. Moreover, since general-purpose products such as the chill roller 16 and the electric chill hole 15 other than the connecting member 17 can be used, an inexpensive concrete block conveying device and conveying method can be provided. Furthermore, by using the electric chill hole 15 as a traction tool, even a person who does not have a special skill can carry the concrete block 2 safely and quickly.

  In addition, since the length of the connecting member 17 can be changed according to the size of the concrete block 2, the concrete block 2 of various sizes can be efficiently transported even with one type of transport device. .

  Furthermore, since the claw jack 11 is used for loading or unloading the concrete block 2 onto or from the chill roller 16, the concrete block 2 can be easily loaded or unloaded even in a narrow place where a crane cannot be put.

  As mentioned above, although this invention was demonstrated based on the Example, this invention is not limited to these Examples, Various deformation | transformation implementation can be performed. For example, in the above embodiment, the electric chill hole 15 is used for the winch as the towing tool, but an engine drive or a manual chill hole can be used instead of the electric chill hole 15. Moreover, although the case where the four chill rollers 16 were connected was demonstrated in the said Example, it cannot be overemphasized that the number of connection of the chill rollers 16 is not limited to four, and may be five or more. Further, in the above embodiment, a steel box having a hollow box shape with a rectangular cross section of the front connecting member 23 and the rear connecting member 24 of the connecting member 17 is used, but a groove steel may be used instead of the hollow box steel. it can.

It is a front view which shows the state which loaded the concrete block on the concrete block conveying apparatus which concerns on this invention. It is an AA arrow line view in FIG. It is a left view of the concrete block conveying apparatus shown in FIG. It is a left side enlarged view of the concrete block conveying apparatus shown in FIG. It is a BB arrow sectional view in Drawing 4. It is the schematic which shows the conveyance method of the concrete block by the concrete block conveyance apparatus which concerns on this invention. It is a flowchart figure which shows the conveyance method of the concrete block by the concrete block conveyance apparatus which concerns on this invention. It is a block diagram which shows a prior art.

Explanation of symbols

1 Concrete block transport device (transport device)
2 Concrete block (box culvert)
11 Nail jack
14 Towing member (wire rope)
15 winch (electric chill hall)
16 Heavy truck (chill roller)
17 Connecting member

Claims (6)

A plurality of heavy trucks connected by connecting members;
A traction member coupled to a concrete block placed on the plurality of heavy trucks;
A winch that pulls the pulling member to convey the concrete block;
A concrete block conveying device comprising: A plurality of heavy trucks connected by connecting members;
A concrete block transporting apparatus comprising: a forklift configured to press the concrete blocks placed on the plurality of heavy trucks and transport the concrete blocks. The concrete block carrying device according to claim 1 or 2, wherein the length of the connecting member can be changed according to the size of the concrete block. The concrete block carrying device according to any one of claims 1 to 3, further comprising a claw jack used for loading or unloading the concrete block on a heavy truck. Connect multiple heavy trucks with connecting members,
A traction member is coupled to the concrete block placed on the plurality of heavy trucks,
A concrete block transporting method comprising transporting the concrete block by pulling the pulling member with a winch or a forklift. Connect multiple heavy trucks with connecting members,
A concrete block transporting method comprising transporting the concrete block by pressing the concrete blocks placed on the plurality of heavy load carts with a forklift.