JP2764697B2 - Equipment for carrying in cable protection tubes in pipe laying - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for carrying a large number of cable protection pipes into an excavation groove formed during the construction work of a pipeline.

[0002]

2. Description of the Related Art It is common practice to dig a road or the like from the ground to form a digging groove of a predetermined depth, carry in a large number of pipes into this groove, join them together, and lay a long pipeline. Work. In recent years, some non-drilling propulsion methods have been put into practical use in urban areas. However, the main part of the whole is that pipes are loaded into excavated trenches dug down from the ground, and pipes are connected in the trenches. This is a method of laying back pipes as necessary after joining. Normally, pipelines range from household, commercial water pipes, sewage pipes, gas pipes to cable protection pipes that collectively incorporate transmission lines, telephone cables, etc.,
Pipes are carried directly into the excavation trench dug down from the ground and joined together in the trench, or a concrete tunnel called a cave is formed and a pipeline is laid in the tunnel. The method of filling concrete with concrete etc. has been widely used. As for the former, especially considering the cable protection pipe, the types of cable protection pipe are diversified with the development of new materials such as steel pipe and reinforced plastic pipe (FRP pipe), and the characteristics of the material are taken into consideration. The best material is selected and planned and implemented.

In order to carry a cable protection tube for laying into a groove dug down from the ground, as shown in FIG. 6, workers at the top and bottom of a drilling groove D formed by driving a sheet pile Y as shown in FIG. The pipes P must be sent by hand, or when the cable protection pipes P are heavy or the excavation groove D is deep, they must be suspended one by one using a crane truck as shown in FIG. In this case, if a large number of cable protection tubes are bundled together and suspended at the same time, it saves time and is efficient.However, if a large number of cable protection tubes are bundled down in a narrow excavation trench, the action of the worker is also reduced. It is not dangerous and can be in danger.

[0004] When a cable protection tube is connected, the position where the next cable protection tube is connected moves in the direction of the pipe each time by the length of the cable protection pipe. It is efficient to change the supply position of the cable protection tubes to be added. However, even if many cable protection tubes are bundled and suspended at one time, one cable protection tube must be conveyed laterally in the groove. However, it cannot be said that the overall efficiency of import is not good.
At present, they must be imported one by one.

[0005]

Conventionally, the work of carrying one cable protection tube into a digging trench has been carried out in a very narrow and unstable place, and handling heavy objects (for example, a 25 kg FRP tube). In the case of handing over, there is a high possibility that the cable protection tube will fall or fall due to inadequate signals or misalignment of the co-workers, causing a work accident. In hanging work with a crane, it takes more time than manual work to carry in each one, and workers who catch it in a narrow groove wait at a position just below the carry-in to keep their safety in order to protect their safety Since there is no choice but to be made, the loss time is large and the waste of time required for carrying in the product increases to a degree that cannot be ignored.

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to connecting a large number of cable protection tubes to form a long conduit in a drill groove, and adding a large number of necessary pipes in the groove. It is an object of the present invention to provide a device which can be efficiently and safely carried into a required joining position.

[0007]

According to the present invention, there is provided a cable protection tube carrying-in apparatus for laying a pipeline, which is suspended so as to be capable of adjusting a mutual distance to a side wall of a digging groove D formed for laying a pipeline. Bars 11 vertically suspended from the frames 1A and 1B to be connected, and connecting bars 12
The cable protection tube carrying portion 2 is formed by a suspension bar 13 which is suspended from the inside of the excavation trench through the cable protection tube. The cable protection tube extends toward the ground above the locking bar 11 of the frame 1. Bar 21 of the frame 1 and the suspension bar 1 of the frame 1
3, a discharge bar 23 extending into the excavation groove with a stopper 22 at its tip, a suspension bar 13 and a locking bar 11
Tube receiving material 24 that alternately protrudes inward with its height changed
And an urging spring 25 for suspending and supporting the tube receiving member 24 so as to be able to move up and down.
Has solved the above-mentioned problem.

In this configuration, the opposite locking bar 11
Fixed bars 14A, 14B intersecting in a refractible X-shape between A, 11B and / or between suspension bars 13A, 13B.
More specifically, it is preferable that each of them is fastened to the locking bar so that the position thereof can be changed.

More specifically, it is a preferred embodiment that one or both of the introduction bar 21 and the discharge bar 23 form a gentle downward slope toward the inside of the excavation groove.

Further, in this construction, both the locking bar 11 and the suspension bar 13 are formed of hollow square bars, and can be freely raised and lowered into a long hole 30 penetrating both sides of the square bars, and cannot rotate. Specifically, a configuration in which the tube receiving member 24 is inserted into the tube receiving member 24 and the upper end of the tube receiving member 24 is suspended by the urging spring 25 is desirable. Alternatively, the tube receiving member 24 may be formed by drilling a square hole 26 externally fitted into the square member, and the lower end of an urging spring 25 for locking the upper end in the hollow portion of the rectangular bar may be connected to the tube receiving member 24.
May be slidably suspended from the square bar.

[0011]

[Operation] The cable protection pipe P is excavated one by one from the ground.
Frames 1 suspended along the side walls from the side edges of
A and 1B are supplied sideways. Since the interval between the two frames is adjusted in advance according to the length of the cable protection tube, the frame falls down between the locking bar 11 and the suspension bar 13 in a substantially horizontal posture. Since the tube receiving member 24 protrudes from the suspension bar, the falling cable protection tube collides with it. However, since the tube receiving member is suspended and supported by the biasing spring 25, the impact is reflected by this impact. It descends and absorbs the impact force. At the next moment, the cable protection tube falls reactively from the tube receiving material toward the side wall and collides with the next tube receiving material projecting below the opposing locking bar 11, and similarly the biasing spring After being caught by the shock-absorbing action of the vehicle, it falls down in the opposite direction in a reactive manner. In this way, the cable protection tube moves downward on the alternately protruding tube receiving material by repeating a zigzag motion, but all the impacts caused by the fall are absorbed, so that the cable protection tube does not break at all. In addition, since there is a connecting bar that vertically and horizontally surrounds the carrying path of the cable protection tube in a bird cage shape, the cable protection tube does not fall off the frame. Finally, the cable protection tube reaches the discharge bar 23 extending toward the inside of the digging groove, and stops quietly under the stopper action of the stopper 22.

[0012]

1 is a front view of an embodiment of the present invention, FIG. 2 is a side view of the same, FIG. 3 is a plan view taken along line AA of FIG. 1, and the pipe type to be carried in is a reinforced plastic pipe P. (FRP pipe) is an example of a pipe line which is connected by stacking a plurality of cable protection pipes for accommodating transmission lines, telephone cables, and the like and interposing a pipe pillow M therebetween. Explaining one specific embodiment based on the drawings, the frame 1A and the frame 1B have a symmetrical shape, and are respectively suspended on the upper end of the sheet pile Y which is the side wall of the excavation groove D. As an actual example, as shown in FIG. 1, an angle 15 fixed to the upper end of the frame is locked to the upper end of the sheet pile, and furthermore, an adjustment bolt 16 is interposed between the lower end of the locking bar 11 and the sheet pile surface for adjustment. However, it is preferable that the posture is determined so that the frame maintains a vertical direction substantially parallel to the sheet pile.

The distance between the two frames is appropriately adjusted according to the length of the pipe to be applied. For example, reinforced plastic pipe (FRP
There are three types of pipes with pipe lengths of 1 m, 2 m and 4 m. In the case of this embodiment, the distance between the two suspension bars 13 is adjusted in an X-shape.
This is performed by changing the crossing angle of the fixed bars 14A, 14B crossing over the wires A, 13B. The two fixing bars are refractively overlapped with each other by fixing bolts 17 for commonly fastening connection holes formed at the intersections. The lower end is flexibly fastened to the lower part of the suspension bar 13 by a lower end bolt 18, and several fixing holes are arranged above, and are appropriately selected so that a desired frame interval is formed therefrom. Then, it is fastened to the upper end of the suspension bar 13 by the upper end bolt 19. It goes without saying that the mutual distance between the two frames expands and contracts by opening and closing the crossing angle of the fixed bar. The fixing bar 14 may be attached to the locking bar 11 instead of the suspension bar 13, and if the fixing bars 14 are separately attached to the both at the same time, the advantage that the posture is further stabilized can be obtained.

Each frame comprises a locking bar 11, a suspension bar 1
3. It comprises a plurality of connecting bars 12 which connect the two and surround the carry-in path of the pipe in a cage shape. The connecting bar is U-shaped horizontally,
Or it is formed by a horizontal connecting bar 12A bent in a U shape and a vertical connecting bar 12B connecting the horizontal connecting bars in the vertical direction. The zigzag course is required because the horizontal distance between the locking bar 11 and the suspension bar 13 should be less than twice the diameter of the cable protection tube to be carried in, and preferably about 1.6 times. It is desirable to set so that versatility can be exhibited in consideration of all the diameters of various pipe types. Also,
Regarding the height of the upper end, the upper end of the suspension bar 13 should be located at least above the diameter of the cable protection tube with respect to the upper end of the locking bar 11 because of its role as a stopper for the rolling cable protection tube. This is a desirable condition. Since the two frames set together in this way can be moved together, they can be easily moved to the next position by removing them from the sheet pile, following the progress of pipe laying in the excavation trench, and suspended to the desired location. Then, the procedure of bringing in the necessary cable protection tube from the ground is repeated, so that it is unrivaled in terms of convenience and safety.

The loading section 2 attached to the frame includes an introduction bar 21 at an upper end, a discharge bar 23 at a lower end, and a locking bar 1 between them.
1. It consists of tube receiving members 24A to 24F which alternately protrude so as to face the suspension bar 13. Introducing bar 21 and discharging bar 2
3 gives an inclination that is slightly lowered toward the inside of the excavation groove. Further, a stopper 22 protrudes from the distal end of the release bar 23, but it is preferable to apply a soft rubber material to quietly stop the rolling of the cable protection tube. Introduction bar 2
Guide bars 29 are provided side by side on one side to assist the support of the supplied cable protection tube.

It is preferable that the tube receiving members 24 projecting from the locking bar 11 and the suspension bar 13 project slightly longer than the radius of the cable protection tube toward the inside of the frame. It is desirable to do. In addition, the shortest distance S between the continuous tube receiving members 24B and the continuous tube receiving members such as 24C protruding downward therefrom in the opposite direction must always be greater than the diameter of the cable protection tube regardless of the type of the tube. Since it is a condition, it is necessary to set the position of the tube receiving material from the beginning in advance with the distance S as a basic element in consideration of versatility.

The tube receiving material is an important point in the present invention. 4 (A) and 4 (B) are a partial cross-sectional front view and a side view of a key point. In FIG. 4, the cable protection tube P falls down from above, and the tube receiving member 24 that has received it on the upper surface thereof resists the upward biasing force of a spring suspended and supported as shown by a two-dot chain line at the next moment. It descends and absorbs the impact force of the cable protection tube falling. Each of the locking bar 11 and the suspension bar 13 is formed of a hollow square member having a rectangular cross section, and the tube receiving member 24 is inserted into an elongated hole 30 penetrating both sides of the square member in common. The upper end of a longitudinal member 28 penetrating and fixing the member 24 is suspended by a biasing spring 25 so as to be able to move up and down, and is restrained by a pin 31 so as not to rotate.

FIG. 5 is a perspective view showing another embodiment, in which each of the locking bar 11 and the suspension bar 13 is formed of a hollow square bar having a cross section, and a square hole 26 for externally fitting the square bar is formed. The tube receiving member 24 moves up and down while sliding along the side surface of the bar. In this embodiment, as shown in the figure, the lower end of an urging spring 25 whose upper end is suspended and supported in the hollow portion of the bar by a suspending member 27 passing through the locking bar 11 (suspending bar 13) is connected to a tube receiving member 24. It is configured to engage with the upper end of the. However, this is merely an example, and the biasing spring may be not only a helical spring but also another shape such as a leaf spring, or a pneumatic, hydraulic, or hydraulic system such as an air cushion is also suitable. All components that mitigate the impact can be applied.

[0019]

As described above, according to the present invention, an excavation trench is formed from the ground, and a large number of cable protection tubes are carried into the trench.
This is a highly efficient cable protection tube carrying-in device associated with the construction work of an excavation type pipe line in which cable protection tubes are joined together to form a pipeline. There is no danger of hand work as in the prior art, and there is no inefficiency like hanging a crane, and the advantage that it is possible to easily carry the necessary cable protection pipe to the target cable protection pipe splicing position is as follows. It greatly outperforms other methods. The disassembly and assembly of the equipment is simple, so the construction site can be moved from one place to the next, and the versatility that can easily follow the fluctuations in the diameter and length of the cable protection tube is blessed. We can always make a big contribution to the improvement and expulsion of occupational accidents.

[Brief description of the drawings]

FIG. 1 is a front view of an embodiment of the present invention.

FIG. 2 is a side view of the same example.

FIG. 3 is a plan view taken along line AA in FIG.

FIG. 4 is a partial cross-sectional front view (A) and a side view (B) of a main part of the example.

FIG. 5 is a perspective view of a main part of another embodiment.

FIG. 6 is a front view showing one of the conventional techniques.

FIG. 7 is a front view showing another conventional technique.

[Explanation of symbols]

 1 Frame 2 Carry-in section 11 Locking bar 12 Connecting bar 13 Suspension bar 14 Fixed bar 21 Introducing bar 22 Stopper 23 Release bar 24 Tube receiving material 25 Bias spring 26 Square hole 30 Long hole P Cable protection tube D Drilling groove Y Yaita S Shortest distance M Pipe pillow

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F16L 1/024 F16L 3/22 F16L 3/223

Claims (5)

(57) [Claims] 1. A frame 1A, 1B suspended from a side wall of an excavation groove D formed for laying a pipeline so as to be able to adjust the distance between the frames 1A, 1B is provided with a vertically suspended locking bar 11, It is formed by a suspension bar 13 which is suspended from the inside of the excavation groove via the locking bar 11 and the vertical and horizontal connecting bars 12, and the carry-in portion 2 of the cable protection tube is provided above the locking bar 11 of the frame 1. Introduction bar 2 for cable protection tube extending toward the ground
And a release bar 2 extending below a suspension bar 13 of the frame 1 toward the inside of the excavation groove with a stopper 22 at its tip.
3, a tube receiving member 24 which protrudes inward alternately by changing the height to the suspension support bar 13 and the locking bar 11;
And a biasing spring 25 for suspending and lifting the cable protection tube. 2. An opposing locking bar according to claim 1,
1A, 11B and / or suspension bar 13A, 13B
In between, fixed bars 14A, 14 intersecting in a refractible X-shape
B. The apparatus for carrying in a cable protection pipe in a pipeline laying, wherein B is fastened to a locking bar so that its position can be changed. 3. The introduction bar 2 according to claim 1, wherein
A device for carrying in a cable protection pipe in laying a pipeline, characterized in that one or both of 1 and the discharge bar 23 form a gentle downward slope toward the inside of the excavation groove. 4. The locking bar 11 and the suspension bar 13 according to any one of claims 1 to 3, each having a cross-section formed of a hollow square bar, and into a long hole 30 passing through both side surfaces of the square bar in common. An apparatus for carrying a cable protection tube in a pipe line laying, wherein a tube receiving member 24 is inserted into a vertically movable and non-rotatable manner, and an upper end of the tube receiving member 24 is suspended by an urging spring 25. 5. The locking bar 11 and the suspension bar 13 according to any one of claims 1 to 3, each of which has a hollow square bar in cross section, and the tube receiving member 24 has a square hole 26 which is fitted to the square bar. And a lower end of a biasing spring 25 which locks an upper end in a bar hollow portion having a rectangular cross section suspends the tube receiving member 24 slidably with respect to the square member. Carry-in device for cable protection tube in road installation.