JP6937219B2 - Transport vehicle for burying pipes - Google Patents

Description

The present invention relates to a transport vehicle for burying pipes, and relates to a technique for transporting pipes to a position where a groove is excavated.

Conventionally, in the pipe burying work, for example, as shown in FIG. 9, the groove 3 for burying the pipe 2 is excavated by the construction machine 1, and the pipe 2 is hung in the groove 3 under the instruction of the guide 4. It is installed.

In the installation of the pipe 2, the pipe 2 to be buried is lifted by a crane-specific construction machine 1 with a two-point support via a hanging rope such as a sling or a wire and suspended at the buried position.

Another method of hoisting the tube 2 is to suspend and support the beam at two points by a hoisting rope, and sling the hanging rope on hooks provided at both ends of the beam. Some of these methods are disclosed in Patent Documents 1 and 2.

Patent No. 3258627 Jitsukosho 61-8061

In the pipe burial work, the groove 3 is excavated by the construction machine 1, and the excavated soil is carried out from the site by a dump truck or the like, and the pipe 2 is suspended and buried in the excavated groove 3 by repeating the excavation work. As described above, when the construction machine 1 is used for the two operations of excavating the groove 3 and suspending the pipe 2, work loss occurs due to the occurrence of waiting time and the like.

Further, when a crane-specific construction machine 1 is used for lifting the pipe 1, manpower is required for the work of loading the hanging rope on the pipe 1 and the slinging work of hanging the hanging rope on the hook of the crane or the like. Further, when the pipe 2 is suspended in the groove 3 by the construction machine 1, the construction machine 1 is arranged on the side of the groove 3 and the boom is tilted and erected to operate the pipe 2 in the groove 3. However, since the operator of the construction machine 1 cannot visually recognize the inside of the groove 3, the pipe 2 cannot be accurately positioned. Therefore, it is necessary to arrange the guide 4 in the groove 3 and guide the pipe 2 suspended by the construction machine 1.

The present invention solves the above-mentioned problems, and for pipe burying, in which the pipe to be buried can be positioned and arranged at the burial position in the groove from the outside of the groove regardless of the guide in the groove. The purpose is to provide a transport vehicle.

In order to solve the above problems, the pipe burying carrier according to the present invention includes a vehicle body that can be arranged across the excavation groove for pipe burying in the vehicle width direction, wheels arranged on both the left and right sides of the vehicle body, and both left and right sides. a clamping device for gripping a pipe buried object placed in the vehicle length direction between the wheels, has a lifting device for vertically driving the clamping device, the clamping device, the tube axis gripper which clamps the tube buried object It has two locations in the central direction, and the grips are connected by a connecting material. The lifting device has a pair of suspension ropes corresponding to each grip portion, and a hoisting operation in which both suspension ropes are wound up at the same time. , It is characterized by performing a feeding operation of feeding both hanging ropes at the same time.

The vehicle body of the transport vehicle for burying pipes according to the present invention is characterized in that it forms a two-wheeled carriage in which one wheel is arranged on each of the left and right sides.

In the pipe burying transport vehicle according to the present invention, the vehicle body has a four-wheel trolley with two wheels arranged on each of the left and right sides, and has a front wheel steering structure with front wheels as steering wheels or a rear wheel steering structure with rear wheels as steering wheels. It is characterized by having.

In the pipe-embedded transport vehicle according to the present invention, the vehicle body is characterized by having a vehicle steering unit that changes the course of the vehicle body.

In the pipe burying transport vehicle according to the present invention, the grip portion of the clamp device is characterized by having an opening mechanism that opens by remote control.

In the pipe burying transport vehicle according to the present invention, the grip portion of the clamp device is characterized by having a lock mechanism that locks in an open state when the pipe to be buried is lowered to a position where it touches the ground.

As described above, according to the present invention, the clamping device provided on the vehicle body grips the pipe to be buried arranged in the vehicle length direction between the wheels on both the left and right sides, so that the vehicle length direction and the axial direction of the pipe are matched. The pipe to be buried can be held at the center position of the vehicle body in the vehicle width direction.

Therefore, by adjusting the position of the vehicle body in the vehicle width direction with respect to the groove width direction of the excavation groove and adjusting the position of the vehicle body in the vehicle length direction with respect to the longitudinal direction of the excavation groove, the pipe to be buried is excavated. It can be positioned almost directly above the arrangement position in the groove. Therefore, in this state, by simply suspending the pipe to be buried from the vehicle body by the lifting device, the pipe to be buried can be accurately installed at the arrangement position in the excavation groove outside the excavation groove, and the guidance in the excavation groove can be performed. Not needed.

Top view showing a transport vehicle for burying pipes according to the embodiment of the present invention. A side view showing a transport vehicle for burying pipes in the same embodiment. Front view showing a transport vehicle for burying pipes in the same embodiment An oblique rear perspective view showing a transport vehicle for burying pipes in the same embodiment. An oblique forward perspective view showing a transport vehicle for burying pipes in the same embodiment. Schematic diagram showing the burial procedure by the pipe burial carrier in the same embodiment. Enlarged view showing the main part of the transport vehicle for burying pipes in the same embodiment Schematic diagram showing the burial procedure by the pipe burial carrier in the same embodiment. Schematic diagram showing the conventional burial procedure

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In FIGS. 1 to 8, the pipe burying transport vehicle 10 of the present embodiment has a vehicle width that allows the vehicle body 11 to be arranged across the pipe burying excavation groove 12 (see FIG. 6) in the vehicle width direction. This is a four-wheeled bogie in which two wheels 13 are arranged on the left and right sides of the vehicle body 11. In the present embodiment, the pipe burying carrier 10 has a front wheel steering structure in which the front wheels 131 are the steering wheels, but a rear wheel steering structure in which the rear wheels 132 are the steering wheels is also possible. Further, the pipe burying transport vehicle 10 can be a two-wheeled carriage in which one wheel 13 is arranged on each of the left and right sides of the vehicle body 11.

The vehicle body 11 has a front leg portion 14 and a rear leg portion 15 to which the wheels 13 are mounted, a side frame 16 connecting between the front leg portion 14 and the rear leg portion 15, and a side frame 16 and a side frame 16. It is composed of a central frame 17 connecting the two, a front rod 18 connecting between the front leg portion 14 and the front leg portion 14, and a rear rod 19 connecting between the rear leg portion 15 and the rear leg portion 15.

The wheel 13 has a tire 22 mounted on a wheel 21 rotatably held by an axle portion 20. The front wheel 131 has an axle portion 20 mounted on the front leg portion 14 by a vertical support shaft 23, and the front wheel 131 is rotatably provided around the axis of the support shaft 23 to form a steering wheel. The axle portion 20 of the rear wheel 132 is fixed to the rear leg portion 15.

At the rear of the vehicle body 11, a vehicle steering unit 24 for changing the course of the vehicle body 11 is provided. In the present embodiment, the vehicle steering unit 24 has a U-shape, but it is also possible to form a single rod.

The pipe burying transport vehicle 10 is provided with a lifting mechanism on the vehicle body 11. The lifting mechanism includes a clamp device 25 arranged at the lower part of the vehicle body 11 and a lifting device 26 arranged at the upper part of the central frame 17 of the vehicle body 11.

The clamp device 25 is arranged between the wheels 13 on both the left and right sides, and here, it is arranged at an intermediate position of the wheel distance. The clamping device 25 has two gripping portions 28 that clamp the pipe 27 to be buried, which is arranged along the vehicle length direction of the vehicle body 11, at two positions in the pipe axis direction. The two grip portions 28 are arranged apart from each other in the vehicle length direction of the vehicle body 11, the grip portion 28 arranged in the front is located at a position corresponding to the lower side of the front rod 18, and the grip portion 28 arranged in the rear is rear. It is in a position corresponding to the lower part of the rod 19. Both grips 28 are fixed to both ends of the connecting member (balance) 29.

Various structures can be applied to the grip portion 28. Here, the gripping body 30 is fixed to the connecting member 29, and a pair of gripping claws 31 are rotatably provided on the gripping body 30. The gripping body 30 has a lock pin 32 that locks the gripping claw 31 in a closed state, that is, in a state of gripping the pipe 27 to be embedded. The lock pin 32 is provided in the gripping body 30 so as to be freely inserted and removed, and prevents the gripping claw 31 from opening when it is inserted into the gripping body 30, and allows the gripping claw 31 to open when it is pulled out from the gripping body 30. Each lock pin 32 is provided with a drawstring 33 (see FIGS. 7 and 8), and has an opening mechanism that remotely controls the drawstring 33 when no load is applied to remove the lock pin 32 and open the gripping claw 31. As another grip portion 28, for example, when the pipe 27 to be buried descends to a position where it touches the ground and becomes a no-load state, the grip claw 31 is opened due to the weight of the grip portion 28, and the open state is further locked. Some have a locking mechanism.

The lifting device 26 for raising and lowering the clamp device 25 has a pair of hanging ropes 34 corresponding to each grip portion 30, and a hoisting operation for simultaneously winding both hanging ropes 34 and a feeding operation for simultaneously feeding out both hanging ropes 34. It consists of a winch that performs the above by rotating the operation handle 35 in the forward and reverse directions.

The front rod 18 and the rear rod 19 are each provided with a capstan-type guide roller 36 for guiding the suspension rope 34.

The operation of the above configuration will be described below. The pipes 27 to be buried are transported to the vicinity of the excavation groove 12 by a truck or the like, and are sequentially arranged along the longitudinal direction of the excavation groove 12. A bridge 37 through which the pipe burying transport vehicle 10 can pass is hung at an appropriate position in the excavation groove 12. The bridge 37 will be moved according to the progress of the burial work.

The operator pushes or pulls the vehicle steering unit 24 to move the pipe burying carrier 10 forward or backward, and further causes the force applied to the vehicle steering unit 24 to be different on the left and right to support the front wheel 131. The wheel is steered by turning around the axis of the shaft 23 and steering the traveling direction of the vehicle body 11.

Then, the pipe burying transport vehicle 10 is moved above the pipe 27 to be buried, the wheels 13 on both sides of the vehicle body 11 are arranged across the pipe 27 to be buried, and the wheels 13 on both the left and right sides are to be buried. The pipe 27 is arranged in the vehicle length direction, and the clamping device 25 is arranged directly above the pipe 27 to be buried and in the middle of the pipe 27 to be buried in the pipe axis direction.

Then, the operation handle 35 of the lifting device 26 is turned to extend the suspension rope 34, and the clamp device 25 is lowered while maintaining the horizontal state. When the grip portion 28 in the state where the lock pin 32 is pulled out from the grip body 30 approaches the pipe 27 to be buried, the gripping claw 31 in a movable state descends while rotating along the outer peripheral surface of the pipe 27 to be buried. Then, both gripping claws 31 close the pipe 27 to be embedded in a state of being clamped. In this state, the lock pin 32 is inserted into the gripping main body 30 to prevent the opening of both gripping claws 31 and lock the pipe 27 to be embedded in the gripping state.

Next, the operation handle 35 of the lifting device 26 is turned to wind up the suspension rope 34, and the clamp device 25 and the pipe 27 to be buried are raised while maintaining the horizontal state.

In this state, since the clamp device 25 grips the pipe 27 to be buried, which is arranged in the vehicle length direction, the vehicle length direction of the vehicle body 11 and the axial direction of the pipe 27 to be buried coincide with each other, and the vehicle width direction of the vehicle body 11 The pipe 27 to be buried can be held at the center position of the vehicle body 11.

Next, the pipe burying transport vehicle 10 is moved, crosses the bridge 37, and the vehicle body 11 is arranged so as to straddle the pipe burying excavation groove 12 in the vehicle width direction. Then, the vehicle body 11 and the pipe 27 are arranged along the longitudinal direction of the excavation groove 12, and the position of the vehicle body 11 in the vehicle width direction with respect to the groove width direction of the excavation groove 21 is adjusted with respect to the longitudinal direction of the excavation groove 12. The position of the vehicle body 11 in the vehicle length direction is adjusted.

By operating the pipe burying transport vehicle 10 in this way, the pipe 27 to be buried can be positioned substantially directly above the arrangement position inside the excavation groove 12.

In this state, the operation handle 35 of the lifting device 26 is turned to extend the suspension rope 34, and the clamp device 25 holding the pipe 27 to be buried is lowered. At this time, the hanging rope 34 is guided by the guide roller 36 directly above the grip portion 28 and is fed directly below. Therefore, the clamp device 25 in which the grip portions 28 on both sides are integrated with the connecting member 29 maintains the state in which the pipe 27 to be buried is positioned with respect to the target arrangement position, and together with the pipe 27 to be buried. It is hung toward the arrangement position inside the excavation groove 12.

With the pipe 27 to be buried reaches the target arrangement position and the grip portion 28 is unloaded, the pull string 33 is pulled from the outside of the excavation groove 12 to pull out the lock pin 32 from the grip body 30 and lock it. The state is released and the gripping claw 31 is allowed to open.

In this state, the operation handle 35 of the lifting device 26 is turned to wind up the suspension rope 34, and the clamp device 25 is pulled up to finish the transfer. By repeating the above operation, the pipe 27 to be buried is sequentially conveyed to the inside of the excavation groove 12.

As described above, according to the pipe burying transport vehicle 10 of the present embodiment, the clamp device 25 provided in the vehicle body 11 arranges the pipe 27 to be buried between the wheels 13 on both the left and right sides in the vehicle length direction. By gripping, the vehicle length direction of the vehicle body 11 and the axial direction of the pipe 27 to be buried can be aligned, and the pipe 27 to be buried can be held at the center position of the vehicle body 11 in the vehicle width direction.

Therefore, the position of the vehicle body 11 in the vehicle width direction with respect to the groove width direction of the excavation groove 12 is adjusted, and the position of the vehicle body 11 in the vehicle length direction with respect to the longitudinal direction of the excavation groove 11 is adjusted to be buried. The pipe can be positioned substantially directly above the arrangement position inside the excavation groove 12. Therefore, in this state, the pipe 27 to be buried can be accurately installed at the arrangement position inside the excavation groove 12 outside the excavation groove 12 simply by suspending the pipe 27 to be buried from the vehicle body 11 by the lifting device 26. , Guidance inside the excavation groove 12 is unnecessary.

In the present embodiment, the configuration of the pipe burying transport vehicle that is manually operated has been described, but the present invention can also be realized in other forms of the pipe burial transport vehicle. For example, application of a steering mechanism that drives and controls wheels 13 by a motor or the like by remote control, or installation of an information device that stores or distributes information such as the type of pipe 27 to be buried and buried position information acquired by GPS. Is also possible.

10 Tube burying carrier 11 Car body 12 Excavation groove 13 Wheels 14 Front legs 15 Rear legs 16 Side frames 17 Central frame 18 Front rods 19 Rear rods 20 Axles 21 Wheels 22 Tires 23 Support shafts 24 Vehicle steering wheel 25 Clamping device 26 Lifting device 27 Tube to be buried 28 Grip part 29 Connecting material 30 Grip body 31 Grip claw 32 Lock pin 33 Pull string 34 Suspension rope 35 Operation handle 36 Guide roller 37 Bridge 131 Front wheel 132 Rear wheel

Claims (6)

A clamp device that grips the vehicle body that can be placed across the excavation groove for burying pipes in the vehicle width direction, the wheels that are placed on both the left and right sides of the vehicle body, and the pipe that is placed in the vehicle length direction between the wheels on both the left and right sides. And has a lifting device that drives the clamp device up and down,
The clamp device has two grips in the direction of the pipe axis for clamping the pipe to be embedded, and the grips are connected by a connecting material.
The lifting device has a pair of hanging ropes corresponding to each grip portion, and is characterized in that a hoisting operation for winding both hanging ropes at the same time and a feeding operation for feeding out both hanging ropes at the same time are performed. .. The transport vehicle for burying pipes according to claim 1 , wherein the vehicle body is a two-wheeled bogie in which one wheel is arranged on each of the left and right sides. 1 . The described pipe burying carrier. The pipe burying carrier according to any one of claims 1 to 3 , wherein the vehicle body has a vehicle steering unit that changes the course of the vehicle body. The transport vehicle for burying a pipe according to claim 1 , wherein the grip portion of the clamp device has an opening mechanism that opens by remote control. The pipe burying transport vehicle according to claim 1 , wherein the grip portion of the clamp device has a lock mechanism that locks in an open state when the pipe to be buried is lowered to a position where it touches the ground.

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