JPH03217596A - Pipe driving excavator - Google Patents

Abstract

PURPOSE:To facilitate movement and placement of an excavator by constituting a pipe driving excavator of a pipe transporting truck on which a buried pipe and internal pipe are mounted and the excavator to drive the buried pipe while excavating and moving forward with a drill provided to the end of the internal pipe inserted into the buried pipe. CONSTITUTION:A buried pipe 29 mounted on a pipe transporting truck 3 is lifted by a hoist 39 to move it to a carrier roller 40, and it is transported to a carrier roller 41 of a excavator 2. After that, the rear end of the buried pipe 29 is held by a headchuck 32, and after an internal pipe 30 mounted on the pipe transporting truck 3 is transported to hold by an internal pipe holding head 32 of a pipe holding device 9, the pipe holding device 9 is lifted by a hoist 7 to load the end of the buried pipe 29 to pipe driving device 6. The buried pipe 29 and internal pipe 30 provided with a drill on the end thereof are driven into the ground by a driving cylinder 24 while holding the buried pipe 29 alternately with up and down chucks 25 and 23. According to the constitution, work efficiency can be promoted.

Description

[Detailed Description of the Invention] C. Industrial Field of Application] This invention relates to an excavator for propulsion of buried pipes for burying curved pipes and straight pipes underground using trenchless construction methods, and particularly relates to improvements in the efficiency and safety of excavation work. It is something. [Conventional technology J In recent years, sewer pipes and water pipes. When burying gas pipes, etc., traffic conditions and construction pollution became a problem, making the cut-and-cover method difficult, and it was around 6-7 t. The propulsion method, which is an open-cut method, is increasingly being adopted. In this propulsion method, an inner pipe with a drill at the tip is inserted into the buried pipe, and the drill protruding from the tip of the buried pipe is used to excavate underground and propel the buried pipe. If there are obstacles such as rivers or structures at the burial site, a pipe curved in the long direction is buried to avoid engravings. In the conventional propulsion method, for example, a pipe propulsion device is installed at the bottom of a tower-shaped pedestal with a frame body, a crane is installed at the top of the pedestal, and a crane is attached to the crane to move the buried pipe and the rear end of the inner pipe. An excavator is used, which has a gripping chuck and is equipped with a pipe gripping device connected to a supply hose for supplying drilling water, a derivation hose for deriving wandering mud water, and a hydraulic hose for supplying pressurized oil that drives the drill. ing. When burying a buried pipe, an excavator is first installed in a predetermined position and the pipe propulsion device is accurately located. Next, move the set of buried pipe and inner pipe placed on the ground to the position of the pipe gripping device, and grip the rear end of each tube with the pipe gripping device. Then, drive the crane to raise the tube gripping device, lift the buried tubes and inner tubes, and pass them through multiple guide rings so that the tip of each tube is at the position of the tube propulsion device. and,
After the tips of the buried pipe and inner pipe are loaded into the pipe propulsion device, the drill attached to the tip of the inner tube excavates underground, and the tube propulsion device propels the buried tube and inner tube sequentially into the ground. During this propulsion, the crane is also lowered in synchronization with the operation of the tube propulsion device. When adding a buried pipe and an inner pipe, remove the pipe gripping device from the rear end of the buried pipe and inner pipe that have been propelled into the ground, and use this pipe gripping device to grip the rear end of the buried pipe and inner pipe to be connected. do. After that, the crane lifts the pipe gripping device again, lifts the new buried pipe and the inner pipe, and aligns the joints of each pipe.The inner pipes are connected using connecting members, and the buried pipes are connected by welding. After that, excavation and propulsion will continue. [Problems to be Solved by the Invention] Since the conventional excavator for propulsion of buried pipes is configured as described above, when the excavator is moved to install buried pipes at multiple points, it is necessary to use a heavy mount. ．． crane. It is necessary to disassemble the tube propulsion device and move it. For this reason, it was not easy to disassemble the excavator, reassemble it after it was moved, or accurately locate the tube propulsion device, and the work took a long time. In particular, when burying a curved pipe, the position of the pipe propulsion device should be determined according to the maximum burial depth of the pipe. It is necessary to accurately adjust the inclination angle with respect to the ground surface, but fine adjustment was not easy. Another drawback was that the work space was large because the underground pipes were placed on the ground, lifted by a crane fixed on an internal pedestal, and then attached to the pipe propulsion device. Also, at this time, extra hose loads such as supply hoses are added to the tube propulsion device, so centering of curved tubes is particularly difficult. It was difficult to match the grooves of the joints. Furthermore, when gripping the buried pipe and inner pipe with the pipe gripping device,
It is necessary for workers to carry the buried pipes and inner pipes placed on the ground to the position of the pipe gripping device, and at this time, the supply hoses connected to the pipe gripping device are sagging and get in the way, resulting in poor work efficiency and problems. There were also safety issues. This invention was made to solve these shortcomings, and it is possible to move the excavator. The purpose of this invention is to provide an excavator for propulsion of buried pipes that can be easily installed and has improved workability. [Means for Solving the Problems] An excavator for propulsion of buried pipes according to the present invention includes a pipe transport cart carrying a buried pipe and an inner pipe, and an inner pipe with a drill attached to the tip inserted into the buried pipe. It consists of an excavator that propels the buried pipe while digging with a drill that protrudes from the tip. The excavator has a tower-shaped frame that is movable on a track, and a buried pipe installed at the bottom of the mount. A position/inclination angle adjustment device for adjusting the advancing direction, an upper chuck and a lower chuck that are mounted on the position/inclination angle adjustment device and grip the buried pipe, and a propulsion cylinder connected between the upper chuck and the lower chuck. a pipe positioning device having a plurality of rollers fixed to the pipe propulsion device and a guide roller detachably attached to a guide arm extending to the top of the pipe propulsion device; a buried pipe and an inner pipe; The supply hose has a head chuck that grips the rear end of the supply hose. Exhaust hose. It is equipped with a tube gripping device that connects a group of hydraulic hoses, a hose reel that stores the hose group, and a hoist that is movably attached to the upper end of a pedestal and connected to the tube gripping device with a wire. The pipe transport trolley is connected to an excavator, carries multiple buried pipes and inner pipes, and is movable on a track, and a hoist installed on the trolley that lifts and moves the buried pipes and inner pipes. The excavator is equipped with a pipe transport device that transports the underground pipes and internal pipes to the excavator. [Function] In this invention, by constructing an excavator with an excavator that can move freely on a track and a pipe carrier, the excavator can be moved to a predetermined position simply by installing the track and without disassembling the excavator. Install. When installing the excavator, the position and inclination angle of the pipe propulsion device can be adjusted according to the shape of the buried pipe by adjusting the position and inclination adjustment device installed at the bottom of the excavator's stand. In addition, the buried pipe and inner pipe mounted on the pipe carrier are moved to the pipe transport device using a hoist, and the buried pipe and inner pipe are transported to the position of the pipe gripping device of the excavation machine and gripped by the pipe transport device. At this time, the hose group connected to the tube gripping device is wound onto the hose reel, and there is no slack. This pipe gripping device is attached to the upper end of the stand so that it can move freely, and is raised by a hoist to lift the buried pipe and inner pipe, and while the pipe positioning device positions the buried pipe, the tips of the buried pipe and inner pipe are propelled. Install it on the device. [Example] Figure 1, Figure 2. Fig. 3 shows an excavator according to an embodiment of the present invention, Fig. 1 is a front view showing the entire excavator l consisting of an excavator 8l2 and a pipe transport cart 3, and Fig. 2 is a side view of the excavator i. , Figure 3 is a rear view of the excavation III2. As shown in the figure, the excavator 2 is attached to a pedestal 4 formed into a tower shape with a frame, a position/inclination angle adjustment device fl5 provided at the bottom of the pedestal 4, and a position/inclination angle adjustment device 1i5. A tube propulsion device 6 is connected to a hoist 7 attached to the upper end of the pedestal 4 by a wire 8, and a tube gripping device 9 and a tube gripping device (l
A supply hose connected to i9 that supplies drilling water and a discharge hose that brings out stray mud water. It has a hose reel 11 for winding and storing a group of hoses such as hydraulic hoses. The pedestal 4 is installed on a truck l3 having wheels l2, and is movable on a track l4. The position/inclination angle adjusting device 1i5 is attached to the base frame l5 as shown in FIG.
, a turn frame l6 rotatably mounted on the base frame l5, a slide frame l7 sliding on the turn frame l6, and a slide frame l7.
It consists of an elevation HWiWa structure consisting of a shaft l9 that supports one end of the frame l8 of the tube propulsion system fi6 and a hydraulic jack 20 that supports the other end. Base frame l5
As shown in FIG. 5, the hydraulic jacks 2l fixed to the frame 4 are provided at both left and right ends, and the hydraulic jacks 2l are used to adjust the left and right vertical directions to make it horizontal. Rotate the turn frame l6 on this horizontal plane to rotate the tube propulsion device @6,
Determine the propulsion direction of the buried pipe. The slide frame l7 moves on the turn frame l6 to adjust the insertion position of the buried pipe fed through the hole 22 of the frame 18. The tube propulsion device 6 includes a lower chuck 23 attached to the lower part of the frame l8, the lower chuck 23 and the propulsion cylinder 2.
It has an upper chuck 25 connected by 4. A tube positioning device includes rollers 26 attached to the lower and upper portions of the tube propulsion device 116 so that the spacing can be adjusted, respectively, and an idle roller 28 detachably attached to a guide arm 27 extending upward from the frame l8. It consists of The tube gripping device 9 includes a head chuck 3l that grips the rear ends of the buried tube 29 and the inner tube 30, respectively, as shown in FIG.
and the inner tube holding head 32, and the cylinder 3 that connects them.
It has 3. As shown in FIG. 7, the tube gripping device 9 is provided with an excavation water supply hose 35 which is secured at a plurality of locations with hose securing bands 34. Sludge water discharge hose 36. A group of hoses 10 such as hydraulic hoses are connected. The hoist 7 that lifts the tube gripping device [9] can move horizontally along the upper end of the pedestal 4. The pipe transport truck 3 is connected to the excavator 2 configured as described above, and as shown in the side view of FIG. A hoist 39 is attached to the upper tower 38 and moves the buried pipe 29 and inner pipe 30, and the center is concave as shown in Fig. 9 in order to transport the moved buried pipe 29 and inner pipe 30 to excavation@2. For example, a plurality of carrier rollers 40 are provided along a curve with a radius of curvature of 40 m. Note that a plurality of carrier rollers 4 are also formed on the excavation @2 along the conveyance direction of the plurality of carrier rollers 40.
l is provided. Next, the operation when installing the curved underground pipe 29 underground using the excavator I configured as described above will be explained. First, track l4 is laid along the planned line. This orbit l
The excavation rock 1 is moved to a predetermined excavation point by running the excavation 8l2 and the pipe transport cart 3 on top of the excavation point 4. After that, the position and inclination angle m of the excavator l! Level of tube propulsion device 6 with Il*li5. Vertical and frontal positions, tilt angle. Adjust the propulsion directions and set the tube propulsion device 11i6 at the predetermined position. Next, one of the buried pipes 29 arranged on the pipe carrier 3 is hoisted up by a hoist 39 and moved to a carrier roller 40 as shown in FIG. This moved underground pipe 29 is conveyed by a carrier roller 40 to a carrier roller 4l of the excavator 2. After that, the head chuck 3l of the pipe gripping device 9 suspended from the hoist 7 of the excavation lll2 is aligned with the rear end of the buried pipe 29 that has been conveyed, and the rear end of the buried pipe 29 is gripped by the head chuck 3l. ．． The inner tubes 30 arranged on the tube transport cart 3 are also transported in the same manner as described above and held by the inner tube holding head 32 of the tube gripping device [9]. When gripping the buried pipe 29 and the inner pipe 30 with the pipe gripping device 1i9 in this way,
Since the buried pipe 29 and the inner pipe 30 can be transported by the hoist 39 and carrier rollers 40 of the pipe transport truck 3, even if the buried pipe 29 is curved with a radius of curvature of 40 m, for example, it can be easily and safely transported. can. In addition, at this time, the hose group 10 connected to the tube gripping device li9 is wound around the hose reel 11, and since there is no excess slack in the hose group lO, the buried pipe 29 can be held without being obstructed by the hose group 10.
and can grasp the inner tube 30. After gripping the buried pipe 29 and the inner pipe 30 with the pipe gripping device @ 9, the pipe gripping device 9 is lifted up with the hoist 7, and the buried pipe 29 is held by the rollers 26 and guide rollers 28 as shown in FIG. The distal end of the buried pipe 29 is positioned on a curved line along the radius of curvature, and the distal end of the buried pipe 29 is mounted on the pipe propulsion device 6. At this time,
The hoist 7 moves, for example, in the X direction according to the radius of curvature of the curved buried pipe 29. In this state, by operating the propulsion cylinder 24 while alternately gripping the buried pipe 29 with the upper chuck 25 and lower chuck 23 of the pipe propulsion device I16, the buried pipe 29 and the inner pipe 30 having a drill at the tip are inserted into the ground. Promote. In accordance with the propulsion of the buried pipe 29, the pipe gripping device 1i9 descends, but in synchronization with this descent, the hoist 7 also moves on the pedestal 4 to prevent unnecessary horizontal resistance from being applied to the buried pipe 29 being propelled. It has become. At the same time, the hose group 10 is also sequentially wound onto the hose reel 11. When holding the buried pipe 29 and inner pipe 30, remove the already propelled buried pipe 29 and inner pipe 30 from the pipe gripping device 9. Then, the buried pipe 29 and the inner pipe 30 are transported again from the pipe transport truck 3 to the excavator 2, and the rear end is gripped by the pipe gripping device @9. Thereafter, the tube gripping device 1i9 is lifted up, the buried tube 29 and the inner tube 30 are guided by the guide rollers 28, and the tip thereof is set in front of the tube propulsion device 6. Then, the set inner pipe 30 and the already propelled inner pipe 30 are centered, and after connecting them with a connecting nut etc., the buried pipe 29 is maintained by welding.
After that, the propulsion is repeated again. After installing the required number of buried pipes 29 underground, the inner pipes 30 are sequentially pulled out using the pipe gripping device 9 and the hoist 7, transported to the pipe transport truck 3, and then pushed by the excavator l on the track l4. Move to the next construction location. Although the above embodiment describes the case where a curved buried pipe is installed, a straight pipe can also be installed in the same manner. [Effects of the Invention] As explained above, this invention Since the excavator is composed of an excavator and a pipe carrier, the excavator can be moved to a specified position simply by installing a track, so it is not necessary to disassemble heavy mounts, pipe propulsion devices, etc. when moving the excavator. This allows the excavator to be easily moved in a short period of time, and the tube propulsion device can be easily positioned accurately. In addition, when installing the excavator, the position of the pipe propulsion device can be adjusted using the position/inclination adjustment device installed at the bottom of the excavator's mount. The shape of the buried pipe can be adjusted by finely adjusting the angle of inclination, etc.
The position of the pipe propulsion device can be set according to the burial depth, etc., and the buried pipe can be installed in a predetermined position with high precision. In addition, the installation position of the pipe propulsion device can be adjusted arbitrarily using the position/inclination angle adjustment device, so even if the construction site is on a slope, the position of the buried pipe can be adjusted. The direction of propulsion can be set accurately. Furthermore, the buried pipe and inner pipe are mounted on a pipe transport truck, and the buried pipe and inner pipe are transported to the excavator using a hoist and a pipe transport device, making it easy to transport the buried pipe and inner pipe. Transport can be carried out without extra effort, and work can be done in a small work space. In addition, when the buried pipe and inner pipe are gripped by the tube gripping device in the conveyed state, the hose group connected to the tube gripping device is wound up on the hose reel and there is no slack, so the hose group gets in the way. It can grasp buried pipes and inner pipes without any trouble, improving work efficiency and safety. In addition, when the tube gripping device is movably attached to the upper end of the mount and raised by a hoist to lift the buried pipe and the inner tube, and its tip is attached to the tube propulsion device, the excess hose load is removed from the tube gripping device. Since it is not added to the inner pipe, it is easy to center the buried pipe and the inner pipe, and to align the grooves of the connected buried pipe.

[Brief explanation of drawings]

Figure l. Figure 2. 3 shows an excavation rock according to an embodiment of the present invention, FIG. 1 is a front view showing the entire excavator, FIG. 2 is a side view of the excavator, FIG. 3 is a rear view of the excavator, and FIG. The figure is a side view showing the position/inclination angle adjustment device of the excavator, Fig. 5 is a sectional view showing a part of the base frame of the position/inclination angle adjustment device, Fig. 6 is a front view showing the tube gripping device, and Fig. 6 is a front view showing the tube gripping device. Fig. 7 is a perspective view showing the hose group, Fig. 8 is a side view showing the pipe transport cart, Fig. 9 is a front view showing the carrier roller on which the pipe transport cart is installed, and Fig. 10 shows the operating state of the pipe transport cart. An explanatory diagram showing,
Figure 11 is an explanatory diagram showing the operating state of the excavator. l... Excavator, 2... Excavation machine, 3... Pipe transport trolley, 4... Frame, 5... Position/inclination angle adjustment device, 6... Pipe propulsion Equipment, 7... Hoist, 9.
...Tube gripping device 0! , 10... hose group, 11...
... Hose reel, l4 ... Track, 29 ... Buried pipe, 30 ... Inner pipe, 39 ... Hoist, 40
．． 41...Carrolla.

Claims (1)

[Scope of Claims] A pipe transport cart carrying a buried pipe and an inner pipe, and an excavation method in which the inner pipe with a drill attached to its tip is inserted into the buried pipe, and the buried pipe is propelled while digging with a drill protruding from the tip of the buried pipe. The excavator consists of a pedestal that is formed into a tower-like frame and is movable on a track, and a pedestal installed at the bottom of the pedestal to adjust the installation position and propulsion direction of the buried pipe. A pipe propulsion device having an adjustment device, an upper chuck and a lower chuck that are mounted on the position/inclination adjustment device and grip a buried pipe, and a propulsion cylinder connected between the upper chuck and the lower chuck, and the tube propulsion device. A pipe positioning device having a plurality of rollers fixed to the device and a guide roller detachably attached to a guide arm extending to the upper part of the pipe propulsion device, and gripping the rear ends of the buried pipe and the inner pipe, respectively. a tube gripping device which has a head chuck for connecting hose groups including a supply hose, a discharge hose, and a hydraulic hose; a hose reel that stores the hose groups; a tube gripping device which is movably attached to the upper end of the mount; The pipe transport trolley is connected to an excavator and is equipped with a plurality of buried pipes and inner pipes, and is movable on a track. 1. An excavator for propulsion of buried pipes, comprising: a hoist that lifts up and moves the buried pipe; and a pipe conveyance device that conveys the buried pipes and inner pipes moved by the hoist to the excavation machine.