Temporary reinforcing device for jacking pipe

Abstract

The utility model relates to the technical field of pipeline reinforcement, and discloses a pipe jacking temporary reinforcing device which comprises a movable pipeline, the movable pipeline is composed of a plurality of pipe joints and a plurality of steel sleeve assemblies, and the pipe joints are arranged in gaps between every two adjacent steel sleeve assemblies. A plurality of connecting blocks are installed on the inner walls of the steel jacket assemblies, a plurality of inner supporting column assemblies are arranged in inner cavities of the pipe joints, and the two inner supporting column assemblies are in butt joint with the connecting blocks on the inner walls of the two adjacent steel jacket assemblies correspondingly; according to the utility model, the plurality of steel sleeve assemblies are arranged to wrap the two ends of the plurality of pipe joints, and the plurality of inner support column assemblies are used for connecting the plurality of steel sleeve assemblies in the inner cavities of the plurality of pipe joints to form an inner support; and the pushing force is transmitted to the next steel sleeve assembly through the multiple inner supporting column assemblies till the pushing force is transmitted to the steel sleeve assembly at the head end, through the arrangement, the resistance borne by the multiple pipe joints in the moving process is greatly transferred, and the damage risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of pipeline reinforcement technology, and more specifically to a temporary reinforcement device for pipe jacking. Background Technology

[0002] Pipe jacking is a trenchless underground pipeline laying technology that uses hydraulic jacks and other equipment to push prefabricated pipes into the ground section by section, forming underground channels or pipelines. Its core principle is to use the jacking equipment to generate thrust in the working pit, overcoming the friction between the pipeline and the surrounding soil, so that the pipeline can advance along the designed route without large-scale excavation of the surface.

[0003] In existing pipe jacking operations, some geological factors can cause significant friction between the outer wall of the pipe and the soil. As the pipeline lengthens, it will encounter greater resistance during the pipe jacking process. When the resistance is too great, the pipe is not strong enough and is prone to cracking, which will affect the construction progress. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a temporary reinforcement device for pipe jacking, so as to solve the problem that the pipe is prone to cracking during the pipe jacking process when it is subjected to excessive frictional force in the pipe jacking operation mentioned in the background art.

[0005] This utility model provides the following technical solution: a temporary reinforcement device for pipe jacking, comprising a movable pipeline, the movable pipeline comprising a plurality of pipe sections and a plurality of steel sleeve assemblies, the plurality of pipe sections being disposed at the gap between two adjacent steel sleeve assemblies; a plurality of connecting blocks are installed on the inner wall of each of the plurality of steel sleeve assemblies, and a plurality of internal support column assemblies are disposed in the inner cavity of each of the plurality of pipe sections, two of the internal support column assemblies respectively connecting to the connecting blocks on the inner wall of two adjacent steel sleeve assemblies; the internal support column assemblies are tubular and used for liquid transportation, and the connecting blocks are provided with a water outlet end that penetrates to the side wall of the steel sleeve assembly.

[0006] Furthermore, the steel sleeve assembly includes an inner ring and an outer ring wall. The inner ring is fixedly connected to the inner wall of the outer ring wall. The two sides of the inner ring abut against the inner ends of two adjacent pipe sections. The outer ring wall is sleeved on the side walls of two adjacent pipe sections. The inner diameter of the inner ring is equal to the inner diameter of the pipe section.

[0007] Furthermore, one end of the connecting block is provided with a through hole extending to the other end, the side wall of the inner support column assembly is provided with two support rings, the bottom of the connecting block is provided with an insert block, the inner wall of the steel sleeve assembly is provided with several slots, the insert block is inserted into the slot, the bottom end of the slot is provided with a water outlet extending to the side wall of the steel sleeve assembly, and the inner wall of the through hole of the connecting block is provided with a liquid channel that connects with the water outlet.

[0008] Furthermore, a locking pin assembly extending to the bottom is provided inside the through hole of the connecting block, and a pin hole for docking with the locking pin assembly is provided on the inner wall of the steel sleeve assembly.

[0009] Furthermore, the inner support column assembly includes two end tubes and a middle connecting tube. The two end tubes are slidably sleeved on the side wall of the middle connecting tube. The side walls of the two end tubes are respectively fixedly connected to a first fixing ring block and a second fixing ring block. A rotating hole is provided on one side wall of the fixing ring block, and a knob is rotatably sleeved in the rotating hole. One end of the knob is fixedly connected to a threaded rod, and the second fixing ring block is threadedly sleeved on the side wall of the threaded rod.

[0010] Furthermore, both ends of the side wall of the connecting pipe are provided with anti-detachment sliders, and the inner walls of the two end pipes are provided with anti-detachment grooves. The two anti-detachment sliders are respectively slidably sleeved in the anti-detachment grooves of the inner walls of the two end pipes.

[0011] Furthermore, a pad is fitted onto the side wall of the connecting pipe, with both ends of the pad abutting against the inner ends of the two end pipes respectively. The pad is composed of several stacked metal pads.

[0012] Furthermore, a fixed half-ring is provided on the inner wall of the pin hole, and the locking pin assembly includes a main pin, with a movable half-ring provided on the side wall of the main pin.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] This utility model sets up several steel sleeve assemblies to wrap around the two ends of several pipe sections, and connects the steel sleeve assemblies with several internal support column assemblies in the inner cavity of several pipe sections to form an internal support. When pushed by a hydraulic mechanism, the thrust is received by the steel sleeve assembly at the end and transmitted to the next steel sleeve assembly through the several internal support column assemblies, until it is transmitted to the steel sleeve assembly at the beginning. This arrangement greatly transfers the resistance encountered by several pipe sections when moving, reducing the risk of damage.

[0015] In addition, the structure of the connecting block and the inner support column assembly has been optimized so that it can be used to transport liquid. The auxiliary liquid is discharged from the side wall of several steel sleeve assemblies. In the pipe jacking operation, this setting makes it easy to wet the soil of the pipe bearing, which can significantly reduce the friction between the pipe and the soil, reduce the pressure on the pipe during the pipe's journey, and further reduce the risk of pipe damage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 A schematic diagram of the cross-sectional structure of the pipe section;

[0018] Figure 3 This utility model Figure 2Enlarged schematic diagram of the connecting block and internal support column assembly structure;

[0019] Figure 4 This utility model Figure 2 A schematic diagram of the cross-sectional structure of the connecting block in the diagram;

[0020] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A;

[0021] Figure 6 This utility model Figure 3 A schematic diagram of the internal support column assembly structure;

[0022] Figure 7 This utility model Figure 6 A schematic diagram of the pad block structure.

[0023] The attached diagram is labeled as follows: 1. Pipe section; 2. Steel sleeve assembly; 3. Connecting block; 21. Inner ring; 22. Outer ring wall; 4. Inner support column assembly; 40. Support ring; 5. Slot; 6. Liquid passage; 7. Locking pin assembly; 8. Pin hole; 31. Insert block; 51. Water outlet; 71. Main pin; 72. Moving half ring; 81. Fixed half ring; 41. End pipe; 42. Middle connecting pipe; 43. Fixed ring block one; 44. Fixed ring block two; 45. Knob; 46. Threaded rod; 47. Pad; 48. Anti-detachment slider; 471. Metal gasket. Detailed Implementation

[0024] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0025] Reference Figures 1-3 This utility model provides a temporary reinforcement device for pipe jacking, including a movable pipeline. The movable pipeline includes several pipe sections 1 and several steel sleeve assemblies 2. The several pipe sections 1 are arranged at the gap between two adjacent steel sleeve assemblies 2. Several connecting blocks 3 are installed on the inner wall of each of the several steel sleeve assemblies 2. Several internal support column assemblies 4 are arranged in the inner cavity of each of the several pipe sections 1. The two ends of the internal support column assemblies 4 are respectively connected to the connecting blocks 3 on the inner wall of two adjacent steel sleeve assemblies 2. The internal support column assemblies 4 are tubular and used for liquid transportation. The connecting blocks 3 are provided with water outlets that penetrate the side wall of the steel sleeve assemblies 2.

[0026] During pipe jacking operation, steel sleeve assemblies 2 are first installed at both ends of a single pipe section 1. The first steel sleeve assembly 2 is used to connect to the pipe jacking machine, and the last steel sleeve assembly 2 is used to contact the hydraulic jacking iron. Before the hydraulic jacking iron applies pressure, several inner support column assemblies 4 are installed inside the pipe section 1. That is, the inner support column assemblies 4 are placed inside the pipe section 1, and both ends of the inner support column assemblies 4 are connected to the connecting blocks 3 on the inner walls of the two steel sleeve assemblies 2. At this time, when the hydraulic jacking iron applies pressure to the last steel sleeve assembly 2, the pressure is transmitted to the first steel sleeve assembly 2 through the inner support column assemblies 4, causing the pipe jacking machine to move until the first pipe section 1 enters the soil. Then, the second pipe section 1 is connected to the last steel sleeve assembly 2, and the other end of the second steel sleeve assembly 2 is installed to form a new tail end. Then, the pipe jacking machine is pushed by the hydraulic jacking iron. This process repeats to form a moving pipeline. During this process, several pipe sections 1 are carried forward. The force output by the hydraulic jacking is transmitted by the steel sleeve assembly 2 and the inner support column assembly 4. At this time, the pipe section 1 does not need to transmit a large jacking force and friction to resist during the movement, thus effectively avoiding damage to the pipe section 1. After the pipeline is laid, the connecting block 3 can be disassembled from the steel sleeve assembly 2. That is, the connecting block 3 and the inner support column assembly 4 can be removed after the pipe jacking operation to prevent pipeline blockage. In addition, during the pipe jacking operation, liquid can be introduced into the inner support column assembly 4 and transmitted along the entire pipeline through the inner support column assembly 4. During the transmission, the liquid is output to the side wall of the steel sleeve assembly 2 through the connecting block 3 to wet the soil, thereby reducing the friction between the pipeline and the soil and further reducing the risk of damage to the pipe section 1.

[0027] Reference Figure 1 The steel sleeve assembly 2 includes an inner ring 21 and an outer ring wall 22. The inner ring 21 is fixed to the inner wall of the outer ring wall 22. The outer ring wall 22 is sleeved on two adjacent pipe sections 1, so that the two sides of the inner ring 21 abut against the two adjacent pipe sections 1 respectively. The inner diameter of the inner ring 21 is equal to the inner diameter of the pipe section 1.

[0028] Since the steel sleeve assembly 2 and the pipe section 1 together form a mobile pipeline, the structural design of the steel sleeve assembly 2 can avoid blockage in the pipeline and can also reinforce the cross section between two adjacent pipe sections 1.

[0029] Reference Figure 3 , 4 One end of the connecting block 3 is provided with a through hole and a plug 31. The inner wall of the inner ring 21 is provided with several slots 5. The plug 31 is inserted into the slot 5. The slot 5 is provided with an outlet 51 that penetrates the side wall of the steel sleeve assembly 2. The plug 31 is provided with a liquid channel 6 that connects with the outlet 51.

[0030] When installing the connecting block 3, simply insert its insert 31 into the slot 5 on the inner wall of the steel sleeve assembly 2. When installing the inner support column assembly 4, insert both ends of it into the through holes of the two connecting blocks 3 respectively. In some embodiments, both ends of the inner support column assembly 4 are fitted with support rings 40. The installation is completed by having the two support rings 40 of the inner support column assembly 4 abut against the two connecting blocks 3. When transporting liquid, a water source can be connected to the through hole of the connecting block 3 at the end of the mobile pipeline. The water source passes through the through hole of one connecting block 3 and enters the inner support column assembly 4 for transmission. Then it reaches the through hole of another connecting block 3 and is transmitted by the next inner support column assembly 4. This process is repeated so that the liquid can reach the entire mobile pipeline. The through hole of the connecting block 3 at the beginning of the pipeline can be blocked with a plug. The liquid in the through hole can be diverted through the liquid channel 6 and then output from the steel sleeve assembly 2 through the outlet 51, and then come into contact with the soil.

[0031] Reference Figure 4 , 5 The connecting block 3 is also provided with a locking pin assembly 7 that extends to the bottom, and the inner wall of the steel sleeve assembly 2 is provided with a pin hole 8 for docking with the locking pin assembly 7.

[0032] Since the connecting block 3 and the steel sleeve assembly 2 are connected by an insertion type, when the connecting block 3 is used to output liquid, it is easy for the connecting block 3 to detach under the action of water pressure. Therefore, a locking pin assembly 7 and a pin hole 8 are set to cooperate. After the connecting block 3 is installed, the locking pin assembly 7 and the pin hole 8 are connected to form a locking effect after the connecting block 3 is installed, so as to avoid the situation of falling off.

[0033] Reference Figure 5 The inner wall of the pin hole 8 is provided with a fixed half ring 81, and the locking pin assembly 7 includes a main pin 71. The side wall of the main pin 71 is provided with a movable half ring 72. The fixed half ring and the movable half ring cooperate with each other to lock the locking pin assembly in the pin hole.

[0034] Specifically, when the locking pin assembly 7 aligns with the pin hole 8, the bottom end of the main pin 71 is inserted into the pin hole 8. At this time, the moving half ring 72 and the fixed half ring 81 are misaligned. When the moving half ring 72 moves to below the fixed half ring 81, the locking pin assembly 7 is rotated to drive the moving half ring 72 to a position aligned vertically with the fixed half ring 81. At this time, the locking pin assembly 7 and the pin hole 8 are connected, and the locking pin assembly 7 cannot disengage from the pin hole 8, thus achieving the effect of installing and locking the connecting block 3.

[0035] Referring to Figure 6, the inner support column assembly 4 includes a central connecting pipe 42 and two end pipes 41. The two end pipes 41 are installed at both ends of the central connecting pipe by a rotating rod. Specifically, the rotating rod includes a knob 45 and a threaded rod 46 connected to each other. The two end pipes 41 are respectively fitted with a first fixing ring block 43 and a second fixing ring block 44. The side walls of the first fixing ring block 43 and the second fixing ring block 44 are provided with rotating holes. By rotating the knob, the end of the threaded rod 46 is screwed into the rotating hole of the first fixing ring block 43 and extends out from the rotating hole of the second fixing ring block 44.

[0036] The above-mentioned structural design allows the inner support column assembly 4 to extend and retract, facilitating the matching of the inner support column assembly 4 with the spacing between the two connecting blocks 3. During use, the threaded rod 46 is rotated by rotating the knob 45. Through the threaded engagement between the second fixed ring block 44 and the threaded rod 46, the spacing between the first fixed ring block 43 and the second fixed ring block 44 can be controlled. During this process, the connecting pipe 42 slides within the two end pipes 41.

[0037] Reference Figure 6 The outer walls of both ends of the connecting tube 42 are provided with anti-detachment sliders 48, and the inner walls of the two end tubes 41 are provided with anti-detachment grooves. The two anti-detachment sliders 48 slide and fit in the anti-detachment grooves on the inner walls of the two end tubes 41 respectively, thereby preventing the connecting tube 42 from falling out of the inner cavity of the end tube 41.

[0038] Reference Figure 7 The middle connecting pipe 42 is fitted with a pad 47 around its perimeter. The two ends of the pad 47 abut against the ends of the two end pipes 41 respectively. The pad 47 is made of several metal pads 471 stacked together.

[0039] Since the inner support column assembly 4 is used to transmit the jacking pressure during pipe jacking operations, and the pressure is applied to the threaded rod 46 through the telescopic structure of the inner support column assembly 4, the structural stability is poor. Therefore, the pad block 47 is set to distribute the pressure on the threaded rod 46, thereby improving the structural strength.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. This utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A temporary reinforcement device for pipe jacking, comprising a movable pipeline, characterized in that: The mobile pipeline includes several pipe sections and several steel sleeve assemblies. The pipe sections are disposed at the gap between two adjacent steel sleeve assemblies. Several connecting blocks are installed on the inner wall of each of the steel sleeve assemblies. Several internal support column assemblies are disposed in the inner cavity of each of the pipe sections. The two ends of each internal support column assembly are respectively connected to the connecting blocks on the inner wall of two adjacent steel sleeve assemblies. The internal support column assembly is tubular and used for liquid transportation. The connecting block is provided with a water outlet end that penetrates the side wall of the steel sleeve assembly.

2. The temporary reinforcement device for pipe jacking according to claim 1, characterized in that: The steel sleeve assembly includes an inner ring and an outer ring wall, wherein the inner ring is fixed to the inner wall of the outer ring wall; The outer ring wall is fitted onto two adjacent pipe sections, such that the two sides of the inner ring abut against the ends of the two adjacent pipe sections respectively, and the inner diameter of the inner ring is equal to the inner diameter of the pipe section.

3. The temporary reinforcement device for pipe jacking according to claim 2, characterized in that: The connecting block is provided with a through hole and a plug, and the inner wall of the inner ring is provided with a number of slots; The insert block is inserted into the slot, and the slot is provided with a water outlet that penetrates the side wall of the steel sleeve assembly; The insert block is provided with a liquid channel that communicates with the water outlet.

4. The temporary reinforcement device for pipe jacking according to claim 3, characterized in that: The connecting block is also provided with a locking pin assembly, and the inner wall of the steel sleeve assembly is provided with a pin hole for mating with the locking pin assembly.

5. A temporary reinforcement device for pipe jacking according to claim 4, characterized in that: A fixed half-ring is provided on the inner wall of the pin hole. The locking pin assembly includes a main pin and a movable half-ring. The movable half-ring is disposed on the side wall of the main pin. The fixed half-ring and the movable half-ring cooperate with each other to lock the locking pin assembly into the pin hole.

6. The temporary reinforcement device for pipe jacking according to claim 1, characterized in that: The inner support column assembly includes a central connecting pipe and two end pipes, with the two end pipes installed at both ends of the central connecting pipe via a rotating rod.

7. A temporary reinforcement device for pipe jacking according to claim 6, characterized in that: The rotary rod includes a knob and a threaded rod that are connected to each other; The two end tubes are respectively fitted with a first fixing ring block and a second fixing ring block, and both the first fixing ring block and the second fixing ring block have swivel holes on their side walls; By rotating the knob, the end of the threaded rod is screwed into the hole of the first fixing ring block and extends out from the hole of the second fixing ring block.

8. A temporary reinforcement device for pipe jacking according to claim 6, characterized in that: The outer walls of both ends of the connecting tube are provided with anti-detachment sliders, and the inner walls of the two end tubes are provided with anti-detachment grooves. The two anti-detachment sliders are slidably sleeved in the anti-detachment grooves of the inner walls of the two end tubes respectively.

9. A temporary reinforcement device for pipe jacking according to claim 6, characterized in that: A pad is fitted around the periphery of the connecting pipe, and the two ends of the pad abut against the ends of the two end pipes respectively. The pad is made of several stacked metal pads.

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