A tunnel pipe jacking propulsion device and a tunnel pipe jacking propulsion method

Abstract

The present invention discloses a tunnel pipe jacking propulsion device and a tunnel pipe jacking propulsion method, which includes a set of power components. Each power component includes an oil cylinder, a main body bracket, and an oil cylinder fixed seat and a movable base arranged inside the main body bracket; the oil cylinder is fixed on the oil cylinder fixed seat, and the movable base is installed inside the main body bracket; the oil cylinder fixed seat is installed on the movable base and can slide along the movable base inside the main body bracket so as to adjust the position of the oil cylinder; each power component is sequentially connected and fixed through the main body bracket. The present invention combines multiple power components and uses brackets for fixation; the position of the oil cylinder is adjusted by the sliding of the oil cylinder fixed seat on the movable base, so that the tunnel pipe jacking propulsion device of the present invention can adapt to the propulsion work of different-shaped pipe jacking and realize the generalization of the tunnel pipe jacking propulsion device.

Description

Technical Field

[0001] The invention belongs to the field of tunnel construction, in particular to a tunnel pipe jacking propulsion device and a tunnel pipe jacking propulsion method. Background Art

[0002] During the construction of tunnel pipe jacking, during the operation of the propulsion cylinders used to provide jacking force, due to uneven force on the cylinders and the need for the jacks to reciprocate and extend, some local cylinders deviate from their original fixed positions, resulting in gaps between them and the rear reaction wall. If not dealt with in time, it will cause inconsistent telescopic amounts of the jacks during the propulsion of the next ring of pipe segments due to the reset of the cylinders, and then uneven distribution of the jacking force, which is extremely likely to induce the deviation of the pipe segments. In addition, the brackets supporting the cylinders are spliced by welding angle steels by workers, and the installation and disassembly are relatively complex. Moreover, they can only adapt to one cylinder size at a time, resulting in low reuse rate. Similar problems also exist in the existing pipe jacking guiding devices. For example, in CN 112212069A, the invention adopts an auxiliary device to adjust the force on the pipe jacking, reducing the probability of cracks in the pipe jacking. In the utility model CN201822029510.8, an auxiliary guiding device is also adopted to enable the propulsion pipe to be well guided when being pushed into the hole by the hydraulic cylinder. However, in the face of different construction situations and requirements, the support brackets cannot achieve multi-functional adjustment functions, and the problems of single and low utilization rate of the support brackets have not been solved. Summary of the Invention

[0003] Object of the Invention: The technical problem to be solved by the present invention is to provide a tunnel pipe jacking propulsion device that can achieve precise adjustment of the propulsion cylinders and improve the reuse efficiency of the support brackets for the problem that the existing pipe jacking propulsion device cannot achieve adjustment during the propulsion process, resulting in low utilization rate of the support brackets of the propulsion device and being unable to adapt to different construction situations.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0005] A tunnel pipe jacking propulsion device includes a set of power components. Each power component includes an oil cylinder, a main body bracket, and an oil cylinder fixing seat and a movable base arranged inside the main body bracket; the oil cylinder is fixed on the oil cylinder fixing seat, and the movable base is installed inside the main body bracket; the oil cylinder fixing seat is installed on the movable base and can slide along the movable base inside the main body bracket to adjust the position of the oil cylinder; each power component is sequentially connected and fixed through the main body bracket.

[0006] Specifically, the main body bracket is a square metal frame. The main body bracket has openings at the front and rear ends corresponding to the oil cylinder, one end is close to the reaction wall, and the other end is close to the pipe jacking, so that during the propulsion process of the oil cylinder, one end is tightly attached to the reaction wall and the other end advances the pipe jacking forward.

[0007] Specifically, the oil cylinder fixing seat includes two groups, front and rear. Each group includes an upper fixing seat and a lifting seat. The oil cylinder is clamped and fixed by the upper fixing seat and the lifting seat.

[0008] A lifting groove is provided at the top of the lifting seat. The lifting groove is an arc groove adapted to the outer surface of the oil cylinder. A fixing groove is provided at the bottom of the upper fixing seat. The fixing groove is an arc groove adapted to the outer surface of the oil cylinder.

[0009] The lifting groove is installed on the lifting seat. By controlling the lifting seat, the lifting groove can be lifted closer to or away from the fixing groove, so as to clamp or loosen the oil cylinder.

[0010] Further, both the lifting groove and the fixing groove can be detachably replaced to adapt to oil cylinders of different sizes.

[0011] Further, a hydraulic pump, a hydraulic rod and a scissor lift table are provided inside the lifting seat. The hydraulic rod is connected to the hydraulic pump through a hydraulic pipe. The output end of the hydraulic rod is connected to the scissor lift table. The lifting groove is installed on the top of the scissor lift table. By the telescopic movement of the hydraulic rod, the scissor lift table is controlled to move up and down, realizing the lifting of the lifting groove.

[0012] Further, rubber gaskets are installed on the inner walls of the lifting groove and the fixing groove to play a buffering role.

[0013] Specifically, the movable base includes left and right sliding supports and front and rear sliding supports. The left and right sliding supports include two groups, upper and lower. Each group includes two front and rear ones. Four left and right sliding supports are respectively installed on the upper and lower plate surfaces of the main body bracket.

[0014] The front and rear sliding supports include two, upper and lower. The two ends of the upper and lower front and rear sliding supports are respectively horizontally installed on the left and right sliding supports at both ends and can move horizontally along the left and right sliding supports, so as to realize the left and right adjustment of the oil cylinder.

[0015] The oil cylinder fixing seats are respectively movably installed on the upper and lower front and rear sliding supports and can slide back and forth along the front and rear sliding supports, so as to realize the front and rear adjustment of the oil cylinder.

[0016] Specifically, a horizontally T-shaped left and right sliding groove is provided inside the left and right sliding supports. The end of the front and rear sliding support is movably installed in the left and right sliding groove and can slide horizontally along the left and right sliding groove to realize the left and right adjustment of the oil cylinder.

[0017] A horizontally T-shaped front and rear sliding groove is provided inside the front and rear sliding supports. The oil cylinder fixing seat is movably installed in the front and rear sliding groove and can slide back and forth along the front and rear sliding groove; realizing the front and rear adjustment of the oil cylinder.

[0018] Limit holes are reserved on the inner walls of the left - right sliding grooves and the front - rear sliding grooves respectively. The front - rear sliding support and the oil cylinder fixing seat are limited by inserting bolts into the corresponding limit holes, so as to fix the position of the oil cylinder.

[0019] Furthermore, the present invention also provides a method for pushing a tunnel jacking pipe, using the above - mentioned tunnel jacking pipe pushing device to carry out the construction of pushing the tunnel jacking pipe.

[0020] Furthermore, the method for pushing a tunnel jacking pipe according to the present invention includes the following steps:

[0021] S1: According to the shape of the tunnel jacking pipe, select an appropriate number of power components, and connect and fix the power components together through the main body bracket;

[0022] S2: Adjust the positions of the oil cylinders in each power component so that the oil cylinders are arranged in sequence on the cross - section of the jacking pipe iron. The rear ends of the oil cylinders abut against the reaction wall, and the other ends are in contact with the iron;

[0023] S3: The oil cylinders in each power component are started to carry out the pushing work of the tunnel jacking pipe.

[0024] Furthermore, it also includes step S4: After completing the pushing of one ring of pipe segments, if some oil cylinders deviate from their original fixed positions, or there are gaps with the rear reaction wall, adjust the corresponding oil cylinder fixing seats to make the oil cylinders reach the specified positions.

[0025] Beneficial effects:

[0026] (1) The present invention combines multiple power components and fixes them using brackets; the position of the oil cylinder is adjusted by sliding the oil cylinder fixing seat on the movable base, so that the tunnel jacking pipe pushing device of the present invention can adapt to the pushing work of jacking pipes with different shapes, realizing the generalization of the tunnel jacking pipe pushing device.

[0027] (2) In the tunnel jacking pipe pushing device of the present invention, each power component can move the oil cylinder back - and - forth, left - and - right, and up - and - down independently. Furthermore, according to the needs of on - site construction, the position of the oil cylinder can be changed and it can be pressed against the reaction wall to make the force more uniform, improving the construction efficiency and saving economic costs.

[0028] (3) In the pushing device of the present invention, the position adjustment of the oil cylinder is convenient, fast, economical and practical, and is safe and reliable through the limiting function of the bolt and screw hole. All parts are connected by bolts. After the jacking construction is completed, it can be directly disassembled, improving the disassembly efficiency of the device for subsequent recycling.

[0029] (4) The pushing device of the present invention can adapt to different construction objectives and requirements. By replacing the lifting groove and the fixing groove to adapt to different oil cylinder sizes, the problem of single applicability of the bracket is solved, realizing the goal of multi - functional integration. Brief Description of the Drawings

[0030] The present invention will be further described in detail below in conjunction with the drawings and specific embodiments, and the above and / or other advantages of the present invention will become clearer.

[0031] Figure 1 It is a schematic structural diagram of a single power component.

[0032] Figure 2 It is a three-dimensional structural diagram of the lifting seat.

[0033] Figure 3 It is a schematic internal structure diagram of the lifting seat.

[0034] Figure 4 It is a schematic structural diagram of the movable base.

[0035] Figure 5 It is a schematic cross-sectional view of the left and right sliding supports.

[0036] Figure 6 It is the state of the propulsion device when used for the propulsion of a square pipe jacking.

[0037] Figure 7 It is the state of the propulsion device when used for the propulsion of a circular pipe jacking.

[0038] In the figures, each reference numeral represents:

[0039] 1 - Main body support; 2 - Oil cylinder; 3 - Left and right sliding supports; 31 - Left and right sliding grooves; 4 - Front and rear sliding supports; 41 - Front and rear sliding grooves; 5 - Lifting seat; 51 - Hydraulic pump; 52 - Scissor lift table; 53 - Hydraulic rod; 6 - Lifting groove; 7 - Upper fixing seat; 8 - Fixing groove; 9 - Rubber gasket. Specific Embodiments

[0040] The present invention can be better understood according to the following embodiments.

[0041] As Figure 1 shown, the tunnel pipe jacking propulsion device of the present invention is composed of a set of power components, and each power component includes an oil cylinder 2, a main body support 1, and an oil cylinder fixing seat and a movable base arranged inside the main body support 1.

[0042] Among them, the oil cylinder 2 is fixed on the oil cylinder fixing seat, and the movable base is installed inside the main body support 1; the oil cylinder fixing seat is installed on the movable base and can slide along the movable base inside the main body support 1 to adjust the position of the oil cylinder 2; each power component is sequentially connected and fixed through the main body support 1, and the pipe jacking propulsion work is realized by the thrust of a set of oil cylinders 2.

[0043] The main body support 1 is a square metal frame. The main body support 1 has openings at the front and rear ends corresponding to the oil cylinder 2. One end is close to the reaction wall, and the other end is close to the pipe jacking. During the jacking process of the oil cylinder 2, one end is tightly attached to the reaction wall, and the other end advances forward to jack the pipe jacking.

[0044] In each set of power components, the oil cylinder fixing seat includes two sets, front and rear. Each set includes an upper fixing seat 7 and a lifting and jacking seat 5. The oil cylinder 2 is clamped and fixed by the upper fixing seat 7 and the lifting and jacking seat 5.

[0045] Combined Figure 1 With Figure 2 , a lifting groove 6 is provided at the top of the lifting and jacking seat 5. The lifting groove 6 is an arc-shaped groove adapted to the outer surface of the oil cylinder 2;, a fixing groove 8 is provided at the bottom of the upper fixing seat 7. The fixing groove 8 is an arc-shaped groove adapted to the outer surface of the oil cylinder 2.

[0046] The lifting groove 6 is installed on the lifting and jacking seat 5. By controlling the lifting and jacking seat 5, the lifting groove 6 is lifted closer to or farther away from the fixing groove 8, thereby clamping or loosening the oil cylinder 2.

[0047] In the present invention, both the lifting groove 6 and the fixing groove 8 can be detachably replaced to adapt to oil cylinders 2 of different sizes.

[0048] Combined Figure 2 With Figure 3 , a hydraulic pump 51, a hydraulic rod 53 and a scissor lift 52 are provided inside the lifting and jacking seat 5; The hydraulic rod 53 is connected to the hydraulic pump 51 through a oil pipe. The output end of the hydraulic rod 53 is connected to the scissor lift 52. The lifting groove 6 is installed on the top of the scissor lift 52. By the telescopic movement of the hydraulic rod 53, the scissor lift 52 is controlled to move up and down, realizing the lifting of the lifting groove 6.

[0049] In the present invention, rubber gaskets 9 are installed on the inner walls of the lifting groove 6 and the fixing groove 8. On the one hand, it plays a buffering role, and on the other hand, it also plays an anti-slip effect.

[0050] Combined Figure 1 With Figure 4 、 Figure 5 , in each set of power components, the movable base includes a left and right sliding support 3 and a front and rear sliding support 4; The left and right sliding supports 3 include two sets, upper and lower. Each set includes two front and rear ones. The four left and right sliding supports 3 are respectively installed on the upper and lower plate surfaces of the main body support 1.

[0051] The front and rear sliding supports 4 include two, upper and lower. The two ends of the upper and lower front and rear sliding supports 4 are respectively horizontally installed on the left and right sliding supports 3 at both ends and can move horizontally along the left and right sliding supports 3, thereby realizing the left and right adjustment of the oil cylinder 2.

[0052] The fixed seat 7 and the lifting seat 5 are respectively movably installed on the upper and lower front-back sliding supports 4, and can slide back and forth along the front-back sliding supports 4, so as to realize the front-back adjustment of the oil cylinder 2.

[0053] The left-right sliding support 3 is provided with a horizontally T-shaped left-right sliding groove 31; the end of the front-back sliding support 4 is movably installed in the left-right sliding groove 31, and can slide horizontally along the left-right sliding groove 31 to realize the left-right adjustment of the oil cylinder 2.

[0054] The front-back sliding support 4 is provided with a horizontally T-shaped front-back sliding groove 41, and the fixed seat 7 and the lifting seat 5 are movably installed in the front-back sliding groove 41, and can slide back and forth along the front-back sliding groove 41; to realize the front-back adjustment of the oil cylinder 2.

[0055] Limit holes are respectively reserved on the inner walls of the left-right sliding groove 31 and the front-back sliding groove 41. The front-back sliding support 4, the fixed seat 7 and the lifting seat 5 are limited by inserting bolts into the corresponding limit holes, so as to fix the position of the oil cylinder 2.

[0056] Using the above tunnel pipe jacking propulsion device for tunnel pipe jacking construction, specifically includes the following steps:

[0057] S1: According to the shape of the tunnel pipe jacking, select an appropriate number of power components, and connect and fix the power components together through the main body bracket 1; during the jacking operation, select a lifting groove 6 and a fixing groove 8 with appropriate sizes according to the size of the oil cylinder 2;

[0058] S2: Lift the lifting groove 6 to an appropriate height to clamp the oil cylinder 2 with the fixing groove 8. At this time, observe whether the oil cylinder 2 is in the appropriate position and whether it is close to the reaction wall. The oil cylinder 2 in each power component can be adjusted in position by moving the front-back sliding support 4 left and right and sliding the oil cylinder fixing seat back and forth, and fixed with bolts, so that the oil cylinders 2 are arranged in sequence on the pipe jacking jacking iron section. The rear end of the oil cylinder 2 abuts against the reaction wall, and the other end contacts the jacking iron;

[0059] S3: The oil cylinders 2 in each power component are started to carry out the tunnel pipe jacking propulsion work.

[0060] S4: After completing the propulsion of one ring of pipe segments, if some oil cylinders 2 are separated from their original fixed positions, or there are gaps with the rear reaction wall, adjust the corresponding oil cylinder fixing seats to make the oil cylinders 2 reach the specified positions, ensure that the oil cylinders 2 are close to the reaction wall to make the force more uniform and then fix them, avoiding phenomena such as pipe segment deviation and cracks.

[0061] Embodiment 1

[0062] As Figure 6As shown, the propulsion device in this state is used for square pipe jacking. At this time, four groups of power components are fixedly connected together vertically in sequence. The cylinders 2 in each power component are adjusted to be arranged vertically along the longitudinal direction, so that the rear ends of the cylinders 2 are closely attached to the reaction wall, and the other ends extend out and fit on one side edge of the pipe jacking iron. Similarly, four groups of power components are also arranged on the other side edge. The pipe jacking work is carried out together by the four groups of power components on each of the two side edges.

[0063] Embodiment 2

[0064] As Figure 7 shown, the propulsion device in this state is used for circular pipe jacking. At this time, three groups of power components are fixedly connected together vertically in sequence. The cylinders 2 in each power component are adjusted to be arranged along the arc section of the iron, so that the rear ends of the cylinders 2 are closely attached to the reaction wall, and the other ends extend out and fit on one side edge of the pipe jacking iron. Similarly, three groups of power components are also arranged on the other side edge. The pipe jacking work is carried out together by the three groups of power components on each of the two side edges.

[0065] The present invention provides an idea and method for a tunnel pipe jacking propulsion device and a tunnel pipe jacking propulsion method. There are many methods and ways to specifically implement this technical solution. The above description is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. Each component not clearly defined in this embodiment can be realized by the prior art.

Claims

1. A tunnel pipe jacking propulsion device, characterized in that, It includes a set of power components. Each power component includes an oil cylinder (2), a main body bracket (1), and an oil cylinder fixed seat and a movable base arranged inside the main body bracket (1); the oil cylinder (2) is fixed on the oil cylinder fixed seat, and the movable base is installed inside the main body bracket (1); the oil cylinder fixed seat is installed on the movable base and can slide along the movable base inside the main body bracket (1) so as to adjust the position of the oil cylinder (2); each power component is sequentially connected and fixed through the main body bracket (1). The movable base includes a left - right sliding support (3) and a front - rear sliding support (4); the left - right sliding support (3) includes two upper - lower groups, and each group includes two front - rear ones. Four left - right sliding supports (3) are respectively installed on the upper and lower plate surfaces of the main body bracket (1). The front - rear sliding support (4) includes two upper - lower ones. The two ends of the two upper - lower front - rear sliding supports (4) are respectively horizontally installed on the left - right sliding supports (3) at both ends and can move transversely along the left - right sliding supports (3). The oil cylinder fixed seats are respectively movably installed on the two upper - lower front - rear sliding supports (4) and can slide back and forth along the front - rear sliding supports (4). The left - right sliding support (3) is provided with a horizontally T - shaped left - right sliding groove (31) inside; the end of the front - rear sliding support (4) is movably installed in the left - right sliding groove (31) and can slide transversely along the left - right sliding groove (31). The front - rear sliding support (4) is provided with a horizontally T - shaped front - rear sliding groove (41) inside, and the oil cylinder fixed seat is movably installed in the front - rear sliding groove (41) and can slide back and forth along the front - rear sliding groove (41). Limit holes are respectively reserved on the inner walls of the left - right sliding groove (31) and the front - rear sliding groove (41). The front - rear sliding support (4) and the oil cylinder fixed seat are limited by inserting bolts into the corresponding limit holes.

2. The tunnel pipe jacking propulsion device according to claim 1, characterized in that, The main body bracket (1) is a square metal frame. The main body bracket (1) has openings at the front and rear ends corresponding to the oil cylinder (2). One end is close to the reaction wall, and the other end is close to the pipe jacking. So that during the pushing process of the oil cylinder (2), one end is close to the reaction wall and the other end pushes the pipe jacking forward.

3. The tunnel pipe jacking propulsion device according to claim 2, wherein, The oil cylinder fixed seat includes two front - rear groups, and each group includes an upper fixed seat (7) and a lifting seat (5). The oil cylinder (2) is clamped and fixed by the upper fixed seat (7) and the lifting seat (5). The top of the lifting seat (5) is provided with a lifting groove (6), and the lifting groove (6) is an arc - shaped groove adapted to the outer surface of the oil cylinder (2); the bottom of the upper fixed seat (7) is provided with a fixed groove (8), and the fixed groove (8) is an arc - shaped groove adapted to the outer surface of the oil cylinder (2). The lifting groove (6) is installed on the lifting seat (5). The lifting seat (5) controls the lifting of the lifting groove (6) to be close to or far from the fixed groove (8), so as to clamp or loosen the oil cylinder (2).

4. The tunnel pipe jacking propulsion device according to claim 3, characterized in that, The lifting seat (5) is provided with a hydraulic pump (51), a hydraulic rod (53) and a scissor lift table (52); the hydraulic rod (53) is connected to the hydraulic pump (51) through a oil pipe, the output end of the hydraulic rod (53) is connected to the scissor lift table (52), the lifting groove (6) is installed at the top of the scissor lift table (52), and the up and down movement of the scissor lift table (52) is controlled by the telescopic movement of the hydraulic rod (53) to realize the lifting of the lifting groove (6).

5. The tunnel pipe jacking propulsion device according to claim 3, characterized in that, Rubber gaskets (9) are installed on the inner walls of the lifting groove (6) and the fixed groove (8).

6. A method for pushing a tunnel pipe jacking, characterized in that, The tunnel jacking propulsion device described in claim 1 is used for the propulsion construction of tunnel jacking.

7. The propulsion method of the tunnel pipe jacking according to claim 6, characterized in that, It includes the following steps: S1: According to the shape of the tunnel jacking, select an appropriate number of power components, and connect and fix the power components together through the main body bracket (1); S2: Adjust the positions of the oil cylinders (2) in each power component so that the oil cylinders (2) are arranged in sequence on the cross-section of the jacking iron of the tunnel jacking, the rear ends of the oil cylinders (2) are abutted against the reaction wall, and the other ends are in contact with the jacking iron; S3: The oil cylinders (2) in each power component are started to carry out the propulsion work of the tunnel jacking.

8. The propulsion method of the tunnel jacking pipe according to claim 6, characterized in that, It further includes step S4: After completing the propulsion of one ring of pipe segments, if local oil cylinders (2) deviate from their original fixed positions or there are gaps with the rear reaction wall, adjust the corresponding oil cylinder fixing seats to make the oil cylinders (2) reach the specified positions.

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