CN214889296U - Damaged pipe jacking pullback device - Google Patents

Abstract

The utility model discloses a damaged push pipe pull-back device, including straining beam, two at least jacks and the tight mechanism of supporting that can receive the exhibition, each jack is located in the work hole, and the entrance interval distribution who receives the hole is received to the duplex winding, and the straining beam supports in the flexible end of each jack, supports tight mechanism and supports in the inner of receiving the damaged push pipe of hole entry end, and the straining beam with support and be connected with the cable between the tight mechanism. The damaged jacking pipe pulling-back device is simple in structure, good in stability, convenient to construct and capable of simply and efficiently pulling out broken jacking pipes in soil layers.

Description

Damaged pipe jacking pullback device

Technical Field

The utility model relates to a retrieve pipe technical field, especially relate to a damaged push pipe pull-back device.

Background

The pipe jacking construction technology is a construction mode adopting a non-excavation technology, and overcomes the friction force of surrounding soil applied to a pipeline in the jacking process by mainly using the jacking force generated by jacking equipment in a working pit, so that the pipeline can be jacked into the soil, after the pipeline is jacked into the soil, the soil jacked by the pipeline can be transported away, and then the equipment is jacked into the next section of pipeline continuously. The working principle of the equipment is that a heading machine or a tool pipe is lifted after arriving in a receiving pit from a working pit by means of thrust between a main jacking oil cylinder and a pipeline and between a main jacking oil cylinder and a relay, and then the pipeline enters a preset track along with the heading machine or the tool pipe to realize the installation of the pipeline. The pipe jacking construction technology is to realize the erection of pipelines by utilizing the principle, and the pipe jacking is widely applied as a trenchless technology in the current municipal engineering. In general, the pipe adopted by the top pipe of the drainage engineering mainly comprises a reinforced concrete pipe.

Compared with the ground grooving construction, the pipe jacking construction technology has the advantages that the occupied area is small, the excavated part is only provided with the working pit and the receiving pit, the ground transportation is not influenced, the pipe jacking construction technology is relatively safe, the original underground pipelines, foundation engineering and other facilities are not damaged, the pipe jacking construction technology can pass through barriers such as railways, highways, riverways, buildings and the like, the excavation and filling amount of earthwork can be greatly reduced, the fund and time are saved, the construction is noiseless, the labor intensity is greatly reduced, and the pipe jacking construction technology becomes a new underground construction technology which is rapidly developed at home and abroad for nearly a thousand years. At present, the pipe jacking construction technology can be adopted under various complex geological conditions. It is suitable for not only clay soil, silty soil and sandy soil, but also non-clay soil such as pebble, broken stone and weathered residual soil. However, compared with the excavation construction method, the pipe jacking construction method has disadvantages, and the reinforced concrete pipe jacking is very easy to break and fracture due to the jacking force exceeding the slope limit or the obstacles (such as piles and huge rock underground structures) during jacking. The damaged states of the reinforced concrete jacking pipes in the jacking pipe construction are different, but the damaged state is caused by overlarge local pressure after the reinforced concrete jacking pipes are completely damaged, wherein one damage reason is that the resistance is too large and the jacking force is greatly increased due to the fact that the front part of the jacking pipe machine meets an obstacle or a hard rock stratum. Since the stress of the pipeline is increased from the head to the rear until the last section of the pipeline is close to the jacking jack, and the pipeline is directly stressed by the jacking jack, the damage generally occurs to the last section of the pipeline close to the jacking jack (namely, the jacking pipe at the entrance of the receiving pit). After such damage occurs, the tube segment needs to be pulled out and replaced by a tube. If the damaged jacking pipe is clamped in the soil layer and is not pulled out in time, the jacking pipe is difficult to push forwards continuously, and the progress of the construction period is delayed seriously. However, a convenient and efficient technical means for removing damaged jacking pipes in time does not exist at present. When the condition happens, the jacking pipes which are mixed with the broken soil layer are usually dug out manually, a large amount of manpower and material resources are consumed, the efficiency is very low, and if the efficiency is serious, safety accidents can occur, so that large or small quality potential safety hazards and economic loss are caused.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide a simple structure, stability is good, construction convenience and can simple the efficient drag out a damaged push pipe pull-back device of broken push pipe in the soil layer fast.

In order to solve the technical problem, the utility model discloses a following technical scheme:

the broken pipe jacking and back-pulling device comprises a straining beam, at least two jacks and a tightening mechanism capable of being folded and unfolded, wherein the jacks are arranged in a working pit and distributed at intervals around an inlet of a receiving pit, the straining beam is tightened against the telescopic end of each jack, the tightening mechanism is tightened against the inner end of the broken pipe jacking at the inlet end of the receiving pit, and a pulling rope is connected between the straining beam and the tightening mechanism.

As a further improvement of the above technical solution:

the tight supporting mechanism comprises a tight supporting disc and an even number of supporting rods, one end of each supporting rod is hinged to the tight supporting disc and distributed at intervals around the center of the tight supporting disc, the other end of each supporting rod is tightly supported at the inner end of the damaged jacking pipe, telescopic pieces are arranged between every two opposite supporting rods, and the stay cables are connected to the tight supporting disc.

The telescopic piece is a turn buckle.

Each stay bar is provided with a connecting lug, and the two ends of the turn buckle are respectively hung on the corresponding connecting lugs.

The tight supporting disc is provided with a cable hook, and the cable is hung on the cable hook.

And top irons are arranged between the tension beam and each jack.

The straining beam is an I-beam.

The inhaul cable is a steel cable.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses a damaged push pipe pull-back device, including straining beam, two at least jacks and the tight mechanism of supporting that can receive the exhibition, each jack is located in the work hole, and the entrance interval distribution who receives the hole is received to the duplex winding, and the straining beam supports in the flexible end of each jack, supports tight mechanism and supports in the inner of receiving the damaged push pipe of hole entry end, and the straining beam with support and be connected with the cable between the tight mechanism. When the device is used, the jack extends to push the pulling beam, the pulling beam pulls the abutting mechanism through the inhaul cable, the abutting mechanism abuts against and pushes the inner end of the damaged jacking pipe, and the damaged jacking pipe is pushed in the working pit, so that the damaged jacking pipe is pulled back. This damaged push pipe pullback device simple structure, stability is good, and construction convenience can draw materials on the spot, and economical and practical, greatly reduced construction cost to can simple efficient drag out broken push pipe in the soil layer fast. The jacking pipe is broken, can be pulled out in the first time and continues construction, and the progress requirement is guaranteed. Compared with the traditional manual excavation, the method has the advantages that resources are saved, unnecessary troubles are reduced, and the construction safety factor is greatly increased.

Drawings

Fig. 1 is a usage state diagram of the present invention.

Fig. 2 is a schematic view of the front view structure of the tightening mechanism of the present invention.

Fig. 3 is a schematic top view of the tightening mechanism of the present invention.

Fig. 4 is a contraction state diagram of the tightening mechanism of the present invention.

The reference numerals in the figures denote:

1. drawing a beam; 2. a jack; 3. a tightening mechanism; 31. tightly abutting against the disc; 311. a rope hook; 32. a stay bar; 33. a telescoping member; 4. a working pit; 5. a receiving pit; 6. damaging the jacking pipe; 7. a cable; 8. connecting lugs; 9. and (4) carrying out iron jacking.

Detailed Description

The invention will be described in further detail with reference to the drawings and specific examples.

Fig. 1 to fig. 3 show the utility model discloses damaged push pipe pull-back device's an embodiment, this damaged push pipe pull-back device includes straining beam 1, two at least jacks 2 and can receive the tight mechanism 3 of supporting of exhibition, each jack 2 is located in work hole 4, and the entrance interval distribution who receives hole 5 is walked around, straining beam 1 supports in the flexible end of each jack 2, support tight mechanism 3 and support in the inner of receiving hole 5 entry end damaged push pipe 6, straining beam 1 with support and be connected with cable 7 between the tight mechanism 3. When the device is used, the jack 2 extends to push the tension beam 1, the tension beam 1 pulls the abutting mechanism 3 through the inhaul cable 7, the abutting mechanism 3 abuts against the inner end of the damaged jacking pipe 6, the damaged jacking pipe 6 is pushed in the working pit 4, and therefore the damaged jacking pipe is pulled back. This damaged push pipe pull-back device simple structure, stability is good, and construction convenience can draw materials on the spot, and economical and practical, greatly reduced construction cost to can simple efficient drag out broken push pipe 6 in the soil layer fast. The top pipe 6 is broken and can be pulled out in the first time and continue to be constructed, and the progress requirement is guaranteed. Compared with the traditional manual excavation, the method has the advantages that resources are saved, unnecessary troubles are reduced, and the construction safety factor is greatly increased.

In this embodiment, as shown in fig. 2 and 3, the tightening mechanism 3 includes a tightening disc 31 and an even number of support rods 32, one end of each support rod 32 is hinged to the tightening disc 31 and distributed at intervals around the center of the tightening disc 31, the other end of each support rod 32 is tightened against the inner end of the damaged top pipe 6, a telescopic member 33 is arranged between every two opposite support rods 32, and the stay cable 7 is connected to the tightening disc 31. Optimally, the struts 32 are evenly spaced around the centre of the clinching disc 31. As shown in fig. 4, before the abutting mechanism 3 extends into the crushing top pipe 6, the expansion member 33 contracts to make each stay 32 contract toward the central axis of the abutting disc 31, so that the abutting mechanism 3 can penetrate through the crushing top pipe 6, and the expansion member 33 extends to make each stay 32 expand into an umbrella shape to abut against the inner end of the crushing top pipe 6. In this embodiment, the telescopic member 33 is a turn buckle.

The abutting mechanism 3 of the damaged push pipe drawing device is used as a connecting device of the damaged push pipe 6 and the jack 2 in the working pit 4, is in an umbrella-shaped structure, is in a closed state when not in work, is opened to be in the umbrella-shaped structure when being transported to the damaged push pipe 6 for drawing operation, and is controlled by a flange bolt. When the damaged jacking pipe 6 is pulled back, the pulling back device in a closed state is firstly conveyed to the damaged jacking pipe 6, the tightening mechanism 3 is opened by adjusting the turn buckle connected between the stay rods 32 at two symmetrical sides, the opened stay rod 32 is abutted against the inner end of the damaged jacking pipe 6, and the damaged jacking pipe 6 is pulled out from the receiving pit 5 by the force of pulling back the jack 2 connected with the inhaul cable 7.

In this embodiment, each brace 32 is provided with a connecting lug 8, and two ends of the turn buckle are respectively hung on the corresponding connecting lugs 8. The stay bars 32 are steel bars, and as shown in fig. 3, the positions of the connecting lugs 8 on the adjacent stay bars 32 are different, so that the connection of the turn buckle is convenient and the connection is staggered.

In this embodiment, the tightening disk 31 is provided with a cable hook 311, and the cable 7 is hung on the cable hook 311. And top irons 9 are arranged between the straining beam 1 and each jack 2. The straining beam 1 is an I-beam. The stay 7 is a wire rope.

This damaged push pipe pullback device utilizes the main equipment jack 2 that 6 tops of push pipes advance to exert oneself, cooperation top iron 9, the I-beam, and utilize cable 7 to establish ties whole pullback device together, simple structure, establish ties into whole back alright utilize jack 2 to exert oneself, pull out damaged push pipe 6 through whole pullback device, not only save a large amount of manpower and materials, and can shorten construction preparation time, accomplish the operation fast under the prerequisite that does not influence the construction progress, and construction convenience.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.

Claims (8)

1. The utility model provides a damaged push pipe pull-back device which characterized in that: the foldable jack support comprises a tension beam (1), at least two jacks (2) and a support mechanism (3) capable of being folded and unfolded, wherein each jack (2) is arranged in a working pit (4) and distributed at intervals around an inlet of a receiving pit (5), the tension beam (1) supports against the telescopic end of each jack (2), the support mechanism (3) supports against the inner end of a damaged jacking pipe (6) at the inlet end of the receiving pit (5), and a pull cable (7) is connected between the tension beam (1) and the support mechanism (3).

2. The damaged push-pipe pullback device according to claim 1, wherein: the tight-supporting mechanism (3) comprises a tight-supporting disc (31) and an even number of supporting rods (32), one end of each supporting rod (32) is hinged to the tight-supporting disc (31) and distributed at intervals around the center of the tight-supporting disc (31), the other end of each supporting rod (32) is tightly supported at the inner end of the damaged jacking pipe (6), a telescopic piece (33) is arranged between every two opposite supporting rods (32), and the inhaul cable (7) is connected to the tight-supporting disc (31).

3. The damaged push-pipe pullback device according to claim 2, wherein: the telescopic piece (33) is a turn buckle.

4. The damaged push-pipe pullback device according to claim 3, wherein: each stay bar (32) is provided with a connecting lug (8), and the two ends of the turn buckle are respectively hung on the corresponding connecting lugs (8).

5. The damaged push-pipe pullback device according to claim 2, wherein: the tight-resisting disc (31) is provided with a cable hook (311), and the cable (7) is hung on the cable hook (311).

6. The damaged push-pipe pullback device according to claim 1, wherein: and jacking irons (9) are arranged between the straining beam (1) and each jack (2).

7. The broken push pipe pullback device according to any one of claims 1 to 6, wherein: the tension beam (1) is an I-beam.

8. The broken push pipe pullback device according to any one of claims 1 to 6, wherein: the inhaul cable (7) is a steel cable.

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