CN-224229414-U - Circular push pipe back rest device

Abstract

The utility model discloses a circular pipe jacking back rest device which comprises an arc-shaped abutting plate, wherein a filling layer is fixedly arranged in a middle cavity of the arc-shaped abutting plate, a placement guide assembly is arranged on the filling layer, and two first supporting piles and two second supporting piles are fixedly arranged on one side of the filling layer. According to the device, the arc-shaped abutting plates are abutted to the inner wall of the working well, the two hydraulic cylinders are hung downwards through the crane, in the placing process, the hydraulic cylinders can be placed above the bearing piece through the placement guide assembly, so that the hydraulic cylinders are placed, in the using process, the rear ends of the hydraulic cylinders can be abutted to the inside of the insertion grooves by the reaction force of the hydraulic cylinders, the fixation of the hydraulic cylinders is further realized, the reaction force generated by the abutting is distributed to the arc-shaped abutting plates through transmission, the force is distributed to the rear well wall by the arc-shaped abutting plates, the abutting stability is improved, and the device cannot be damaged.

Inventors

• Wu Fangbi
• ZHANG YU
• Chai xiang
• WANG YUTAO
• FANG WEI
• Ge Anxing
• ZHANG WEI
• YUAN JIANGBIN
• JI LEI
• YIN ZHENGPING
• YAO YU
• ZHANG HENG

Assignees

• 中铁四局集团上海工程有限公司
• 中铁四局集团有限公司

Dates

Publication Date

20260512

Application Date

20250630

Claims (6)

1. 1. The utility model provides a circular push pipe back device, includes arc butt board (1), arc butt board (1) middle cavity position fixed mounting has filling layer (7), its characterized in that, be provided with on filling layer (7) and place guiding component, one side fixed mounting of filling layer (7) has two first supporting pile (3) and two second supporting pile (4), two fixedly connected with a plurality of support piece (6) between first supporting pile (3) and second supporting pile (4), a plurality of fixed mounting has connecting piece (5) on support piece (6), two fixed welding has two I-steel (15) between second supporting pile (4), two equal fixed welding has carrier (16) on I-steel (15).
2. 2. The circular pipe jacking backrest device according to claim 1, wherein two plugging groove bodies are formed in the filling layer (7), each plugging groove body comprises a first portion and a second portion, the first portion is arranged to be placed in the groove (8), the second portion is arranged to be inserted into the groove (9), the inserting groove (9) is formed in the groove (8), the groove (8) is arranged to be a half runway, and the inserting groove (9) is annular.
3. 3. The circular pipe jacking backrest device according to claim 1, wherein a rubber cushion layer (2) is fixedly arranged on one side of the arc-shaped abutting plate (1) away from the filling layer (7).
4. 4. The circular pipe jacking backrest device according to claim 1, wherein the placement guide assembly comprises two first guide members (11) fixedly installed at the top end of the filling layer (7) and a second guide member (12) arranged between the two first guide members (11), the second guide member (12) is arranged in a herringbone shape, and the two first guide members (11) and the second guide member (12) are fixedly connected through a backboard (14).
5. 5. A round push bench back unit according to claim 4, wherein both the side walls of the first guide member (11) and both sides of the second guide member (12) are rollingly mounted with rollers (13).
6. 6. A round pipe jacking backrest device as claimed in claim 2, characterized in that the top ends of the plurality of bearing members (16) are provided with rubber members (17), and the inner walls of the two insertion grooves (9) are provided with annular rubber rings (10).

Description

Circular push pipe back rest device Technical Field The utility model relates to the technical field of underground pipeline construction, in particular to a circular pipe jacking back rest device. Background The pipe jacking construction is a non-excavation pipeline laying process, pipe joints are jacked into soil layers section by utilizing a hydraulic jacking system through installing pipe jacking equipment in a working well, and accurate laying of underground pipelines is achieved. The technology has the advantages of small influence on ground traffic, high construction efficiency, controllable cost and the like, and is particularly suitable for urban underground pipe network construction. In order to ensure construction safety, the working well needs to adopt a supporting structure (such as steel sheet piles) to stabilize the peripheral soil body and separate underground water, and meanwhile, the soil body in the hole area needs to be reinforced and sealed before jacking, so that earth surface settlement or equipment damage caused by mud water rushing into the well is prevented. In the pipe jacking construction process, a large-scale oil cylinder is one of key equipment and is responsible for providing strong power for jacking pipe and jacking soil layers. However, large cylinders require a stable fixture to ensure proper operation during operation. At present, a round pipe jacking back rest device is commonly adopted in the prior art to achieve the aim. The device can provide reliable support and counter force for the large-scale oil cylinder through reasonable design and structural layout, so that the device is stable in the jacking process, and smooth performance of pipe jacking construction is ensured. The application of the circular pipe jacking back rest device not only improves the safety and reliability of pipe jacking construction, but also is beneficial to improving the construction efficiency and quality, and is an indispensable important component in pipe jacking construction technology. Patent document CN219242802U discloses an assembled back rest device for pipe jacking construction, which relates to the field of devices for pipe jacking construction, and comprises a bearing assembly arranged in a foundation pit and a surrounding assembly, wherein the bearing assembly comprises a plurality of bearing plates, adjacent bearing plates are mutually abutted, the bearing plates close to the side wall of the foundation pit are connected with the side wall of the foundation pit, the surrounding assembly is positioned at the periphery of the bearing assembly and connected with the outermost bearing plate, and the surrounding assembly is used for tightly hooping the plurality of bearing plates. The application has the advantages that a worker can assemble the bearing assembly and the surrounding assembly on a construction site, the assembly is simple, the time is saved, and the bearing assembly and the surrounding plate group can be reused. In the prior art of the above patent, the working scene of the jacking pipe is generally located inside the working well and abuts against the side wall of the working well by means of the back rest device, however, the back rest device of the jacking pipe is plane, the contact area with the working well is too small, bending is easily caused to the device when the oil cylinder works, and the device is not provided with a position for temporarily placing the oil cylinder, so that the oil cylinder needs to be placed inside the working well and abuts against the back rest device, and the calibration work of the plugging pile is carried out by the output end of the oil cylinder, so that the process is complicated and the use is inconvenient. Disclosure of utility model The utility model aims to provide a round pipe jacking back rest device which aims to solve the defects in the prior art. In order to achieve the above purpose, the circular pipe jacking back rest device comprises an arc-shaped abutting plate, wherein a filling layer is fixedly arranged in a middle cavity of the arc-shaped abutting plate, a placement guide assembly is arranged on the filling layer, two first supporting piles and two second supporting piles are fixedly arranged on one side of the filling layer, a plurality of supporting pieces are fixedly connected between the two first supporting piles and the two second supporting piles, connecting pieces are fixedly arranged on the plurality of supporting pieces, two I-shaped steel is fixedly welded between the two second supporting piles, and bearing pieces are fixedly welded on the two I-shaped steel. As further description of the technical scheme, the filling layer is provided with two inserting groove bodies, each inserting groove body comprises a first part and a second part, the first part is provided with an inserting groove, the second part is provided with an inserting groove, the inserting groove is arranged in the inserting groove, the i