JP2584609Y2 - Guide frame structure in pipe burying equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe burying apparatus and, more particularly, to a guide frame structure suitable for a pipe burying apparatus in which pipes are buried in multiple stages vertically.

[0002]

2. Description of the Related Art As means for burying a pipe in the ground, a pipe burying device for pushing the pipe into a pit cut from the surface of the ground is installed, and the rear end of the pipe is pressed by the pipe burying device to sequentially add the pipe. The method of burial underground is widely used.

In carrying out the above method, a pipe burying device is mounted on a guide frame installed in a pit so as to be movable in the front-rear direction, and the pipe burying device is advanced by a propulsion cylinder to bury the pipe. The rear end of the tube is pressed and buried at the tube receiving port at the front of the device.

[0004] And Uyo shown in FIG. 7, in the case of embedded across stages ground to the tube 2, 2 ... from the soil the wall surface of the pit 1 in the vertical relationship, and the lower tube 2 _1, 2 ₁ ... When the embedding of the pipe is completed, the pipe burying device and the guide frame are lifted by a crane and raised to the next level, where a spacer is laid under the guide frame, and the guide frame is placed on the guide frame. the fine adjustment, so as to enter the stage of the tube 2 _2, 2 ₂ ... burying work, similarly to that to perform the next stage of the tube 2 _3, 2 ₃ ... burial.

[0005]

However, in the prior art described above, each time the pipe burying device is changed to the burying level of the upper pipe, the pipe burying device and the guide frame must be lifted by a crane, and the height position is also finely adjusted. Because it is necessary to adjust, a large crane for the above work must be prepared, and since the work is performed outside the pit, there is a danger in the work, and various other problems such as lack of positioning accuracy are required. There was a problem.

In view of the above, an object of the present invention is to provide a guide frame structure in a pipe burying apparatus which can eliminate the need for using a large crane and can be set safely and accurately.

[0007]

SUMMARY OF THE INVENTION As a means for solving the problems of the prior art, the present invention is directed to a pipe burying apparatus for burying a pipe in the ground by pressing a rear end of the pipe. A fluid cylinder is provided on the front and rear side surfaces of the guide frame that is movably supported in the front-rear direction so as to be pivotable in a vertical plane, and the fluid cylinder is fixed to the guide frame when the fluid cylinder is operated in a vertical position and stored in a horizontal position. It is characterized by having fixing means.

[0008]

When burying a pipe, the fluid cylinder is turned and fixed in a horizontal position, and the lower pipe is buried. When embedding the next tube, release the fluid cylinder, replace the fluid cylinder in the vertical position, fix it in that position by the fixing means, supply the pressurized fluid to the fluid cylinder, and extend the rod. As a result, the guide frame relatively rises and shifts to the burying level of the next pipe. At this position, a spacer is laid under the guide frame, the pressure fluid of the fluid cylinder is released, the fluid cylinder is turned by 90 °, fixed by the fixing means, and the pipe burying operation is started. Thus, the upper portion of the fluid cylinder is stored at a position lower than the upper surface of the guide frame, and the fluid cylinder does not obstruct the operation. Further, even when the pipes are buried in a plurality of upper and lower stages, the pipes can be set at an accurate height position without using a working machine such as a crane.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 shows an outline of an example of a pipe burying apparatus to which the present invention is applied. A pipe burying apparatus 3 is provided with a guide frame 4 installed in a pit 1 cut from the ground surface in the front-rear direction (see FIG. 1). 1 has a drive unit 5 mounted so as to be movable in the left-right direction), and the drive unit 5 is advanced (leftward in FIG. 1) by the left and right propulsion cylinders 6 with the wall surface of the pit 1 as a reaction force receiver. The rear end of the pipe 2 that abuts on the pipe receiving port 7 at the front end of the driving section 5 is pressed and buried in the ground.

The guide frame 4 comprises a pair of left and right sides, and fluid cylinders 8, 8 are mounted on the outer surfaces of the front and rear portions of the guide frame 4 so as to be pivotable about a shaft 9, 9 in a vertical plane.

The structure of the mounting portion is, as shown in cross section in FIG. 5, a bearing portion 10 fixed to the side surface of the guide frame 4 and a side surface of the fluid cylinder 8 fixed in a direction perpendicular thereto. The shaft 9 is retained by a retaining member 11 and is rotatably fitted.

The fluid cylinder 8 is provided with fixing means for fixing the guide frame 4 in a vertical position (operating position) and a horizontal position (storage position). In the illustrated embodiment, as shown in FIG. 6, two sets of through holes 12, 12 having a phase difference of 90 ° in the diameter direction of the bearing portion 10 are provided, and the shaft 9 is formed in a cross shape in the diameter direction. A through-hole 13 is formed, and is prevented from rotating by inserting a pin 14 into these through-holes 12 and 13. The number of the through-holes 12 on the bearing portion 10 side may be one, and the fixing means is preferably inserted by inserting a pin 14 because the structure is simplest and the operation is easy. However, the present invention is not limited to this. It may be something.

In FIG. 1, reference numeral 15 denotes a supply / discharge pipe for supplying a pressurized fluid (oil pressure) to / from the fluid cylinder 8, and reference numeral 16 denotes a pilot check valve for preventing its own weight from falling. Also, in FIG.
7, 17 are spacers, 18, 18, 18 are spacers 17
19 is a jack for fine adjustment interposed between the guide frame 4 and the guide frame 4, 19 is a pipe pedestal installed on the guide frame 4 for supporting the pipe 2 to be buried, and 20 is a guide supporting the end of the propulsion cylinder 6. The support leg which abuts on the frame 4 via a roller is shown.

Next, the operation of the above embodiment will be described.

At the time of burying the pipe, if the fluid cylinder 8 is turned in a horizontal posture and the pin 14 is inserted into and fixed to the through holes 12 and 13 between the bearing portion 10 and the shaft 9, as shown in FIG. Is stored in the range of the side surface of. Then, the lower tube 2 is set at a predetermined position, and the propulsion cylinder 6
And the drive unit 5 is advanced by the reaction force,
The rear end of the pipe 2 is pressed by the pipe receiving port 7 to make the pipe 2 (2 in FIG. 7).
₁ ) Insert into the ground. When the insertion of one tube 2 is completed, the driving unit 5 is retracted and returned, and a new tube is joined to the rear end of the preceding tube 2 and the driving unit 5 is advanced again, thus burying a predetermined length. Work is performed.

When the embedding of the lower tube 2 is completed, the pins 14
And the fluid cylinder 8 is turned 90 ° so that the rod 8a is on the lower side, and the bearing 10 and the shaft 9 are again rotated.
The pin 14 is inserted and fixed in the through holes 12 and 13 which match with the above. Thus, the fluid cylinder 8 is fixed in a vertical position as shown in FIGS. 1, 4 and 5, and when the pressure fluid is supplied to the upper side of the fluid cylinder 8 through the pipe 15, the rod 8a
There extended, shifts relative guide frame 4 is raised to the next pipe burying level (2 _second level in FIG. 7).

At this position, a spacer 17 is laid under the guide frame 4, and after the jack 18 is bitten, the pressure fluid of the fluid cylinder 8 is drained, the rod 8a is shortened, and the pin 1
4 is withdrawn, and the fluid cylinder 8 is again turned 90 ° and is fixed in the horizontal posture in the same manner as described above by the pins 14. Fine adjustment of the vertical position of the guide frame 4 is performed by the jack 1
The operation is performed by 8, 18,.

Further, the pipe burying position at the next stage (2 in FIG. 7)
When raising guide frame 4 to level ₃ )
A spacer (pad) is placed at the lower end of the rod 8a of the fluid cylinder 8, and the rod 8a is extended in the same manner as described above.
After raising the guide frame 4, the guide frame 4
The spacer 2 is bitten underneath and kept in that position, and the tube 2 at that stage is buried.

In the above operation, the upper part of the fluid cylinder 8 is turned and stored in the side of the guide frame 4 during the insertion operation and the extension operation of the pipe 2, so that it does not protrude from the upper surface of the guide frame 4. Guide frame 4
Is not stored in the end of the work.

[0021]

As described above, according to the present invention, when the pipes are buried in the ground in multiple stages, it is not necessary to lift the drive unit and the guide frame of the pipe burying device by the crane every time the pipe is moved to the upper stage. These can be raised simply by changing the direction of the fluid cylinders attached to the frame.Therefore, it is not necessary to bring a working machine such as a large crane to the site, and workability and work safety can be significantly improved. It is possible to work in a narrow place because there is no need to bring a crane or the like.

Further, since the fluid cylinder is provided so as to be pivotable so as to be able to take a vertical posture and a horizontal posture with respect to the guide frame, when the pipe is buried, the fluid cylinder is stored in a horizontal state so that the upper part of the fluid cylinder is raised above the guide frame. It does not protrude, does not hinder the work, and even if a fluid cylinder with a large stroke is provided, it does not hinder the above operation, so it can easily cope with the case where the number of burial stages of the pipe is large. Can be.

[Brief description of the drawings]

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

FIG. 2 is a front view showing a stored state of the fluid cylinder in FIG. 1;

FIG. 3 is a side view of the same.

FIG. 4 is a front view of the fluid cylinder of FIG. 2 in an operating state.

FIG. 5 is a side view showing a part of the cross section.

FIG. 6 is a view taken in the direction of arrow A in FIG. 5;

FIG. 7 is an explanatory diagram of an arrangement in a case where pipes are buried in multiple layers in the ground.

[Explanation of symbols]

 Reference Signs List 1 pit 2 pipe 3 pipe burying device 4 guide frame 5 drive unit 6 propulsion cylinder 7 pipe socket 8 fluid cylinder 9 shaft 10 bearing unit 12, 13 through hole 14 pin

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Ueno 2-9-118 Honjo Higashi, Kita-ku, Osaka-shi, Osaka Inside Kanden Kogyo Co., Ltd. (72) Inventor Yoshiharu Ono 1-chome Tsujii, Himeji-shi, Hyogo No. 12-5 Ichikura Construction Co., Ltd. (72) Inventor Toshiyasu Akiha Toshiyasu Akiba 1293, Atocho, Hanamigawa-ku, Chiba-shi, Chiba Sanwa Equipment Co., Ltd. Chiba Plant (56) References JP-A 55-19375 (JP, A) JP-A 4-138493 (JP, U) JP-A 53-11804 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E21D 9/06 311

Claims (1)

(57) [Scope of request for utility model registration] In a pipe burying device for burying a pipe in the ground by pressing a rear end of the pipe, a fluid cylinder is provided in a vertical plane on front and rear side surfaces of a guide frame for supporting the burying apparatus movably in the front and rear direction. A guide frame structure in a pipe burying device, characterized in that it has a fixing means for turning the fluid cylinder to a guide frame when the fluid cylinder is operated in a vertical position and stored in a horizontal position.