JPH0524394B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) In the cut-and-cover method of water and sewage pipe construction, the present invention is used to add and join pipes brought into an excavated trench, and then connect the pipes to be buried. The present invention relates to a pipe positioning device used to fix and hold the end of the pipe and determine the buried position of the pipe, and more particularly to a hydraulic pipe positioning device that enables all pipe laying work to be mechanized above the trench.

(Prior art and its problems, etc.) Conventionally, pipe installation and burying work using the cut-and-cut method usually involved digging a trench across the entire length from manhole to manhole, installing the pipe, and then performing a backfilling process. For this reason, it was possible to confirm the accuracy of pipeline construction only in the exposed state of the pipe from the time of joining (fastening) the pipe to immediately before backfilling. However, even if the pipe were to shift (slide) during the backfilling process, there was no way to control such an abnormality, which was a bottleneck in construction management.

In addition, the work of laying and positioning the pipes must be done by entering the excavation trench one by one and using or adjusting cradle, spacer, etc. to be buried, which is extremely troublesome and uneconomical. Yes, and it was also dangerous.

(Objective of the Invention) Therefore, the object of the present invention is, firstly, to be able to perform all the positioning of pipe installation mechanically from above the trench, thereby easily ensuring safety and improving work efficiency. Second, the pipes that are about to be backfilled can be positioned and fixed during the backfilling process, making it possible to check the pipe construction accuracy and prevent pipe movement during construction.Third, the pipe positioning To provide a pipe positioning device capable of economical construction without the need to bury anything.

(Structure of the Invention) In order to achieve the above object, the pipe positioning device of the present invention comprises: (a) a mobile cart equipped with wheels that runs on the upper surface of retaining plates or floor plates in place of the retaining plates erected on both sides of the groove; (b) a position fixing means attached to the movable dolly for fixing and stopping the movable dolly at its working position, that is, the position where the pipe is to be fixed; and (c) a rigid member suspended substantially perpendicularly to the movable dolly. and (d) a hydraulically operated and remotely controllable pipe clamp installed at the lower end of the rod. (e) The position fixing means includes brackets protruding from and approximately parallel to the inner surface of the retaining plate at the front and rear of the movable cart, and a manual handle attached to a bearing plate provided on the inner surface of the bracket. A toggle link mechanism is provided to move the rod, and a link member that operates in a direction substantially perpendicular to the inner surface of the retaining plate is provided with a fixed part that can freely move toward and away from the inner surface of the retaining plate. The height of the tube clamp section is configured to be adjustable by a screw mechanism driven by a rotary handle on the movable cart, and (g) the tube clamp section is configured to hold the tube. The pair of clamp pieces held therein are opened and closed by hydraulic jacks, and the upper part of the frame to which the clamp pieces are attached is connected to the lower end of the rod.

(Example) Further, the present invention will be explained in detail using the illustrated example.

FIG. 1 shows a construction procedure for a pipe backfilling process using the pipe positioning device 2 according to the present invention in the cut-and-cover method of water and sewerage pipe construction.

That is, the pipe positioning device 2 installed on the outside (on the left side in the figure) of the partition plate 1 that partitions the construction section that is to be backfilled is used to grasp the end of the pipe 3 that is to be filled and firmly fix the position. ing.
Then, a backfilling process is performed by a compaction device 5 pulled by a drive vehicle 4. In the figure, 5' is a vibrocompactor.

By the way, the unit length of the pipe 3 is about 4 m, and the pitch of the partition plates 1, 1 attached to the retaining board 6 in advance is also about 4 m.
It is ranked m. The mutual connection (fastening) position of the pipes 3 is approximately midway between the adjacent partition plates 1, 1, and the backfilling process can be performed for each section of the partition plates 1, 1.

Therefore, the pipe positioning device 2 can properly position the pipe 3 at an outer position of the backfilling section until the end of the backfilling process of about 100 to 200 mm to the upper surface of the pipe 3. Therefore, it is easy to ensure pipe installation accuracy. Moreover, for the purpose of positioning and fixing the tube 3, there is no need to bury anything.

On the other hand, on the outside of the backfilling section, that is, at a position adjacent to the forward side of the pipe laying work, the pipe laying device 9 attached to the boom 8 of the drive vehicle 7 is used to install the pipe 3' to be added to the pipe 3 related to the backfilling. will be concluded.

That is, the process of backfilling the pipe 3 and the process of adding and laying a new pipe 3' are performed in adjacent sections separated by one partition plate 1. Therefore, the construction area can be significantly shortened, and obstacles and regulations to road traffic can be greatly eased.

Next, FIGS. 2 and 3 show the entire tube positioning device 2 in large detail.

This consists of a mobile trolley A equipped with wheels 11, 11 that run on the upper surfaces 6a, 6a of retaining plates 6, 6 installed on both sides of the groove to prevent the collapse of the groove 10, and a rigid rigid frame suspended from the mobile trolley A. Rod B and Rod B
The main part is a pipe clamp part C installed at the lower end of the pipe.

As shown in detail in FIGS. 4 to 6, the movable trolley A is centered on a frame 12 formed by welding and assembling a section steel and a flat steel plate into a substantially square shape with a side of approximately 350 mm. The grooves 10 at the four corners of the frame 12
Support plates 13 perpendicular to the longitudinal direction of the vehicle are fixed by welding, and wheels 11 are attached to these.

More specifically, as shown in the cross-sectional view in FIG.
are each attached to the outer end of the support arm 14. The inner end 14a of the support arm 14 is connected to a hollow box-shaped lifting guide 1 fixed to the support plate 13.
It is inserted in 5. A support bolt 16 is installed vertically and rotatably on the lifting guide 15, and the support bolt 16 is screwed into the base end of the support arm 14.

Therefore, when the support bolt 16 is turned, the height of the support arm 14 and thus the wheel 11 changes due to the screw movement, and the horizontality of the frame frame 12 of the movable trolley A can be adjusted.

As mentioned above, this moving trolley A is
The upper surfaces 6a, 6a of the earth retaining plates 6, 6 by the wheels 11...
Lightly push (or pull) it in the longitudinal direction of the groove 10 by hand.
It can be moved. However, in order to fix the movable cart A at a desired working position, a position fixing means D is provided as follows.

That is, as shown in detail in FIGS. 4 to 6, the outer surface of the support plate 13 is approximately equal to the inner surface of the retaining plate 6.
Approximately triangular brackets 20 that protrude approximately parallel at intervals of about 20 mm are attached. A bearing plate 21 is provided near the tip of the bracket 20, and one ends of link members 22 and 23 are attached to the bearing plate 21 with pins 24 and 25 (FIG. 5).

On the other hand, the base end of the manual handle 26 is connected to the other ends of the two link members 22, 23 and the pin 27,
28 to form a so-called toggle link mechanism which is operated by a manual handle 26 (FIG. 5). The lower link member 23 rotates in the vertical direction (vertical direction) and has a length that protrudes considerably from the lower edge of the bracket 20 (sixth link member 23).
figure). A support shaft 29 is attached to the lower end of the link member 23 with double nuts 30 in a direction substantially perpendicular to the inner surface of the retaining plate 6.
A fixing part 31 that can freely move toward and away from the inner surface of the retaining plate is attached to the outer end of the retaining plate.

Therefore, when the manual handle 26 is rotated clockwise in FIG. 5, the link member 23 is rotated counterclockwise around the pin 25 due to the operation of the toggle link mechanism, and the support shaft 29 integral with the link member 23 is rotated counterclockwise around the pin 25. Then, the fixed part 31 separates from the inner surface of the retaining plate 6, and the movable trolley A becomes free. However, when the manual handle 26 is rotated counterclockwise and placed in the position shown in FIG. The tube 3 is fixed to the position 3, and sufficient reaction force is generated to position and fix the tube 3.

Next, rod B has an outer diameter of φ34 and a length of 680 mm.
It is constructed by passing a steel module tube 35 of about mm in length into the sheath tube 37 of the union joint 36 and adding it to the required length for fastening with a bolt 381 (FIGS. 2 and 3).

As for the upper end of the rod B, as shown in detail in FIG. 7, a support tube 38 having a diameter of 45 mm and a length of about 200 mm is attached and fixed vertically downward to the approximate center of the frame frame 12 of the movable trolley A. A screw shaft 39 is installed in the axial direction of the center of the support tube 38, and a rotation handle 40 is attached to the upper end of the screw shaft 39.

On the other hand, a thick-walled modular pipe 35' having a length of about 200 mm and having a guide groove 41 formed in the axial direction on the outer surface is connected to the uppermost union joint 36. The upper end of this thick-walled module tube 35' is fitted into the support tube 38, and an internal thread 4 is formed on the inner surface of the upper end.
The screw shaft 39 is screwed into the seventh
figure). A locking bolt 43 screwed into the lower part of the support tube 38 in the radial direction is inserted into the guide groove 41.

Therefore, when the rotary handle 40 is rotated forward or backward, the rod B as a whole moves up and down due to the screw movement between the screw shaft 39 and the female thread 44 of the thick module 35'. Therefore, the height of the tube clamp portion C can be adjusted.

Next, as shown in detail in FIG. 8, the tube clamp section C has a pair of symmetrical clamp pieces 50 and 50' at its center that hold the vinyl chloride tube 3 with an outer diameter of approximately φ210 from both sides. to do. The pair of clamp pieces 50, 50' have symmetrical positions on the upper inner side.
It is rotatably attached to a box-shaped frame 52 with pins 51, 51. A piston rod 54a of a hydraulic jack 54 is attached to the upper end of one clamp piece 50 with a pin 53, and is connected to the upper end of the other clamp piece 50' with a pin 55.

Therefore, the pair of clamp pieces 50, 50' are opened and closed by the hydraulic jack 54 to grip and release the pipe 3.

In the figure, 56 is a tube gripping part attached to the inner surface of the lower part of each clamp piece 50, 50', and 57 is a part installed in the center of the lower surface of the box-shaped frame 52. ,56 and 5
Caught by 7.

The box-shaped frame 52 is connected to the lower end of the rod B by a union joint 36. Hydraulic jack 54
The hydraulic hose 58 extends along the rod B and is connected to the hydraulic system of the drive vehicle 4 on the ground.

(Function and Effect) Therefore, this pipe positioning device 2 moves the upper surface of the retaining plate 6 in the longitudinal direction of the groove 10, and when the desired position is reached, the position fixing means D fixes the position of the movable cart A. Confirm. Then, the tube end portion of the tube 3 protruding outside of the partition plate 1 is connected to the tube clamp portion C.
Let me grab it. After that, the rotating handle 40
Turn to align the center line (height) of tube 3 along the previously measured line. After that, the backfilling process will be carried out in the backfilling area. Therefore, the position of the pipe 3 can be reliably held fixed until the completion of backfilling, and construction accuracy can be confirmed and managed. Movement of the tube 3 during backfilling can be completely prevented.

In addition, regarding the positioning of the tube 3, the groove 10
There is no need to go inside, and the work is highly safe. Moreover, since the positioning is done mechanically, labor and labor can be saved. Moreover, since the tube 3 is positioned floating above the bottom surface of the groove 10 without burying anything, the alignment of the tube 3 is easy to adjust and is highly economical.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram showing how the tube positioning device is used, Figures 2 and 3 are front and side views of the tube positioning device, Figure 4 is an enlarged plan view, and Figures 5 to 7. 4 is a cross-sectional view taken in the direction of -, -, - arrows in FIG. 4, and FIG. 8 is an enlarged view of the tube clamp portion.

Claims (1)

[Claims] 1. (a) A movable trolley A equipped with wheels 11 that run on the upper surfaces of retaining plates 6, 6 on both sides of the groove 10, and (b) A movable trolley A for fixing the working position of the movable trolley A. a position fixing means D attached to the movable trolley A; (c) a rod B suspended substantially perpendicularly to the movable trolley A; and (d) a pipe clamp portion C installed at the lower end of the rod B. (E) The position fixing means D has brackets 20 protruding from the front and rear of the movable trolley A that are close to and substantially parallel to the inner surface of the retaining plate 6, and the brackets 20
The manual handle 2 is attached to the bearing plate 21 provided on the inner surface of the
A toggle link mechanism is provided to move the earth retaining plate 6.
(f) The rod B has a fixed length of modular pipe 35... The movable trolley A
The height of the tube clamp section C is configured to be adjustable by screw mechanisms 39 and 44 driven by the upper rotation handle 40; (g) The tube clamp section C holds the tube 3; A pair of clamp pieces 50, 50' are hydraulic jacks 5
4, and the clamp piece 5
A tube positioning device characterized in that the upper part of the frame 52 to which the rods 0 and 50' are attached is connected to the lower end of the rod B.