A kind of anti-knock structure for pipe jacking construction

Abstract

The utility model relates to the technical field of anti-knocking structures, and in particular to an anti-knocking structure for pipe jacking construction, comprising a bottom frame, the bottom surface of which is fixedly connected with a plurality of universal wheels, the inner wall of which is slidably connected with a moving frame, and the outer side of which is fixedly connected with a motor. The utility model has the advantages that the head of the pipe jacking machine can be supported by multiple sets of guide rollers to prevent the head from sinking and the tail from tilting upward. As the head of the pipe jacking machine continues to exit the hole, the motor can be turned on to rotate its screw rod, which can drive the moving frame to slide inside the bottom frame, drive the limit ring and the head of the pipe jacking machine to move outward synchronously, and continuously support the head, which can further improve the supporting effect of the head of the pipe jacking machine. Moreover, the anti-knocking structure does not need to be prefabricated, which can improve the efficiency of the pipe jacking machine exiting the hole, and can be adjusted according to the real-time position of the head, without affecting the exiting operation of the pipe jacking machine.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-knock structures, in particular to an anti-knock structure for pipe jacking construction. Background Art

[0002] The phenomenon of knocking when exiting the hole often occurs during pipe jacking construction. The so-called knocking when exiting the hole means that the nose of the machine sinks and the tail of the machine rises when exiting the hole. If the soil supporting force is insufficient when the pipe jacking machine exits the hole, knocking will occur, especially in sandy soil layers. Therefore, an anti-knocking structure will be installed when exiting the hole during the pipe jacking construction process.

[0003] For example, the advance reinforcement structure for the entrance and exit of a jacking pipe with the publication number CN208778010U pre-buries a guide pipe at the entrance and exit of the jacking pipe, avoiding the need to break the concrete of the wall to make a hole when the grouting pipe is subsequently driven in, simplifying the process and saving time. Cement slurry is injected into the earth around the hole through the grouting pipe, and the cement slurry reacts with the surrounding soil to solidify and compact the soil, forming a solid annular curtain around the hole, effectively reinforcing the soil around the jacking pipe hole, and preventing the soil at the entrance from collapsing when the jacking pipe enters and exits the hole, and the jacking machine head from tilting up or "bowing".

[0004] The advance reinforcement structure of the above-mentioned exit is the anti-knock structure for pipe jacking construction. This structure injects cement slurry after exiting the hole. The cement slurry reacts with the surrounding soil to solidify and compact the soil, thereby improving the compressive resistance of the hole. Although it has the effect of preventing knocks, in actual pipe jacking construction operations, the pipe jacking machine starts from the starting well and finally drills out from the receiving well. During the underground movement, although errors can be reduced through a variety of means, small errors are inevitable. The existence of these errors may cause the head of the pipe jacking machine to align with the anti-knock structure cast in advance, which will affect the exit operation of the pipe jacking machine. Therefore, an anti-knock structure for pipe jacking construction is needed to solve the above problems. Utility Model Content

[0005] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0006] Therefore, one purpose of the utility model is to provide an anti-knocking structure for pipe jacking construction to solve the problems mentioned in the background technology and overcome the shortcomings of the prior art.

[0007] In order to achieve the above-mentioned purpose, an embodiment of the utility model on one hand provides an anti-knocking structure for jacking pipe construction, including a bottom frame, the bottom surface of the bottom frame is fixedly connected to a plurality of universal wheels, the inner wall of the bottom frame is slidably connected to a moving frame, the outer side of the bottom frame is fixedly connected to a motor, the output end of the motor is fixedly connected to a screw rod, the end of the screw rod away from the motor is rotatably connected to the bottom frame through a bearing, the outer surface of the screw rod is threadedly connected to the moving frame, the top surface of the moving frame is fixedly connected to a bracket, a hydraulic cylinder is fixedly connected between the bracket and the moving frame, the output end of the hydraulic cylinder is fixedly connected to a lifting frame, the top of the lifting frame is fixedly connected to a limiting ring, and the inner wall of the limiting ring is rotatably connected to a plurality of guide rollers.

[0008] Preferably, any of the above schemes has two limit plates fixedly connected to the bottom surface of the lifting frame, the two limit plates are symmetrically distributed on both sides of the hydraulic cylinder, and the limit plates are slidably connected to the bracket.

[0009] Preferably, any of the above schemes has two anti-collision pads fixedly connected to the bottom surface of the lifting frame, and the anti-collision pads are made of rubber.

[0010] Preferably, in any of the above schemes, both side surfaces of the bottom frame are fixedly connected with side panels, the bottom surfaces of the side panels are fixedly connected with hydraulic support assemblies, and the side panels are perpendicular to the bottom frame.

[0011] Preferably, any of the above schemes is that a guide rod is fixedly connected to the inner wall of the bottom frame, and the movable frame is slidably connected to the guide rod.

[0012] Preferably, any of the above schemes has a groove on the bottom surface of the movable frame, a plurality of rotating frames are fixedly connected to the inner wall of the groove, each of the rotating frames is rotatably connected to a roller on the inner wall, and the roller is slidably connected to the bottom frame.

[0013] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0014] When the head of the pipe jacking machine is about to reach the exit position, the anti-knock structure can be transported to the inside of the receiving well, and the anti-knock structure can be pushed to move to the exit position under the rolling of the universal wheel, and the hydraulic cylinder can be turned on to drive the limit ring to rise and fall until the axis of the pipe jacking machine and the limit ring coincide. The limit ring can be adjusted in real time according to the exit position of the pipe jacking machine through the limit ring that can be raised and lowered, and then the hydraulic support assembly is turned on to make its bottom contact with the ground, so that the bottom frame can be stably prevented from being on the ground. When the pipe jacking machine exits the hole, it will move into the limit ring and contact with the guide roller. As for sliding, the head of the pipe jacking machine can be supported by multiple sets of guide rollers to prevent the head from sinking and the tail from tilting up. As the head of the pipe jacking machine continues to exit the hole, the motor can be turned on to rotate its screw rod, which can drive the movable frame to slide inside the bottom frame, and can drive the limit ring and the pipe jacking machine head to move outward synchronously, thereby continuously supporting the head of the machine and further improving the supporting effect on the head of the pipe jacking machine. Moreover, the anti-knocking structure does not need to be prefabricated, which can improve the efficiency of the pipe jacking machine exiting the hole, and can be adjusted according to the real-time position of the head of the machine without affecting the exiting operation of the pipe jacking machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the assembly of the utility model from the first perspective;

[0016] Figure 2 It is a schematic structural diagram of the assembly of the utility model from a second viewing angle;

[0017] Figure 3 This is a schematic diagram of the structure of the limit ring of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the bottom frame of the utility model.

[0019] In the figure: 1-bottom frame, 2-universal wheel, 3-moving frame, 4-motor, 5-screw, 6-bracket, 7-hydraulic cylinder, 8-lifting frame, 9-limiting ring, 10-guide roller, 11-limiting plate, 12-anti-collision pad, 13-side plate, 14-hydraulic support assembly, 15-guide rod, 16-groove, 17-rotating frame, 18-roller. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings, but the protection scope of the utility model is not limited to the following.

[0021] like Figures 1 to 4As shown, a kowtow prevention structure for pipe jacking construction comprises a bottom frame 1, a plurality of universal wheels 2 are fixedly connected to the bottom surface of the bottom frame 1, a moving frame 3 is slidably connected to the inner wall of the bottom frame 1, a motor 4 is fixedly connected to the outer side of the bottom frame 1, a screw rod 5 is fixedly connected to the output end of the motor 4, an end of the screw rod 5 away from the motor 4 is rotatably connected to the bottom frame 1 through a bearing, an outer surface of the screw rod 5 is threadedly connected to the moving frame 3, a bracket 6 is fixedly connected to the top surface of the moving frame 3, a hydraulic cylinder 7 is fixedly connected between the bracket 6 and the moving frame 3, a lifting frame 8 is fixedly connected to the output end of the hydraulic cylinder 7, a limiting ring 9 is fixedly connected to the top of the lifting frame 8, and a plurality of guide rollers 10 are rotatably connected to the inner wall of the limiting ring 9.

[0022] As an optional technical solution of the present invention, two limit plates 11 are fixedly connected to the bottom surface of the lifting frame 8. The two limit plates 11 are symmetrically distributed on both sides of the hydraulic cylinder 7. The limit plates 11 are slidably connected to the bracket 6. When the lifting frame 8 is lifted or lowered, the limit plates 11 will be driven to slide relative to the bracket 6, thereby limiting the movement of the lifting frame 8.

[0023] As an optional technical solution of the present invention, two anti-collision pads 12 are fixedly connected to the bottom surface of the lifting frame 8. The anti-collision pads 12 are made of rubber. The setting of the anti-collision pads 12 can prevent a rigid collision between the lifting frame 8 and the bracket 6.

[0024] As an optional technical solution of the present invention, the two side surfaces of the bottom frame 1 are fixedly connected with side panels 13, and the bottom surfaces of the side panels 13 are fixedly connected with hydraulic support assemblies 14. The side panels 13 are perpendicular to the bottom frame 1. By opening the hydraulic support assemblies 14 so that their bottoms are in contact with the ground, the bottom frame 1 can be stably placed on the ground.

[0025] As an optional technical solution of the present invention, a guide rod 15 is fixedly connected to the inner wall of the bottom frame 2 , and the movable frame 3 is slidably connected to the guide rod 15 . The guide rod 15 can limit the movement of the movable frame 3 .

[0026] As an optional technical solution of the present utility model, a groove 16 is provided on the bottom surface of the mobile frame 3, and a plurality of rotating frames 17 are fixedly connected to the inner wall of the groove 16. The inner wall of each rotating frame 17 is rotatably connected to a roller 18, and the roller 18 is slidably connected to the bottom frame 1. When the mobile frame 3 slides inside the bottom frame 1, it can drive the roller 18 to roll inside the bottom frame 1, which can reduce the friction between the mobile frame 3 and the bottom frame 1, and can make the movement of the mobile frame 3 more labor-saving.

[0027] A head-knocking prevention structure for pipe jacking construction, the working principle is as follows:

[0028] 1): When the head of the pipe jacking machine is about to reach the exit position, the anti-knocking structure can be transported to the inside of the receiving well, and the anti-knocking structure can be pushed to move to the exit position under the rolling of the universal wheel 2, and the hydraulic cylinder 7 is turned on to drive the limit ring 9 to rise and fall.

[0029] 2): Turn on the hydraulic support assembly 14 to make its bottom contact with the ground, which can stably prevent the bottom frame 1 from being on the ground. When the pipe jacking machine comes out of the hole, it will move into the limit ring 9 and slide relative to the guide roller 10. The head of the pipe jacking machine can be supported by multiple sets of guide rollers 10.

[0030] 3): Turn on the motor 4 to rotate the screw rod 5, which can drive the movable frame 3 to slide inside the bottom frame 1, and can drive the limit ring 9 and the jacking head to move outward synchronously, so as to continuously support the head.

[0031] To sum up, the anti-knocking structure for pipe jacking construction can be transported to the inside of the receiving well when the head of the pipe jacking machine is about to reach the exit position, and the anti-knocking structure can be pushed to make it move to the exit position under the rolling of the universal wheel 2, and the hydraulic cylinder 7 is turned on to drive the limit ring 9 to rise and fall until the axis of the pipe jacking machine and the limit ring 9 coincide with each other. The limit ring 9 can be adjusted in real time according to the exit position of the pipe jacking machine through the limit ring 9 that can be raised and lowered, and then the hydraulic support assembly 14 is turned on to make its bottom contact with the ground, so that the bottom frame 1 can be stably prevented from being on the ground, and when the pipe jacking machine exits the hole, it will move into the limit ring 9. The plurality of guide rollers 10 can be used to support the head of the pipe jacking machine and prevent the head from sinking and the tail from tilting. As the head of the pipe jacking machine continues to exit the hole, the motor 4 can be turned on to rotate the screw rod 5, which can drive the movable frame 3 to slide inside the bottom frame 1, and can drive the limit ring 9 to move outward synchronously with the head of the pipe jacking machine, so as to continuously support the head of the pipe jacking machine and further improve the supporting effect of the head of the pipe jacking machine. Moreover, the anti-knocking structure does not need to be prefabricated, so as to improve the efficiency of the head of the pipe jacking machine in exiting the hole, and can be adjusted according to the real-time position of the head of the pipe jacking machine without affecting the exiting operation of the pipe jacking machine.

Claims

1. A head-knocking prevention structure for pipe jacking construction, characterized in that: The invention comprises a bottom frame (1), the bottom surface of the bottom frame (1) is fixedly connected to a plurality of universal wheels (2), the inner wall of the bottom frame (1) is slidably connected to a moving frame (3), the outer side of the bottom frame (1) is fixedly connected to a motor (4), the output end of the motor (4) is fixedly connected to a screw rod (5), the end of the screw rod (5) away from the motor (4) is rotatably connected to the bottom frame (1) through a bearing, the outer surface of the screw rod (5) is threadedly connected to the moving frame (3), the top surface of the moving frame (3) is fixedly connected to a bracket (6), a hydraulic cylinder (7) is fixedly connected between the bracket (6) and the moving frame (3), the output end of the hydraulic cylinder (7) is fixedly connected to a lifting frame (8), the top of the lifting frame (8) is fixedly connected to a limiting ring (9), and the inner wall of the limiting ring (9) is rotatably connected to a plurality of guide rollers (10).

2. The anti-knocking structure for pipe jacking construction according to claim 1, characterized in that: Two limit plates (11) are fixedly connected to the bottom surface of the lifting frame (8), and the two limit plates (11) are symmetrically distributed on both sides of the hydraulic cylinder (7), and the limit plates (11) are slidably connected to the bracket (6).

3. The anti-knocking structure for pipe jacking construction according to claim 2, characterized in that: Two anti-collision pads (12) are fixedly connected to the bottom surface of the lifting frame (8), and the anti-collision pads (12) are made of rubber.

4. The anti-knocking structure for pipe jacking construction according to claim 3, characterized in that: Both side surfaces of the bottom frame (1) are fixedly connected to side panels (13), the bottom surfaces of the side panels (13) are fixedly connected to hydraulic support components (14), and the side panels (13) are perpendicular to the bottom frame (1).

5. The anti-knocking structure for pipe jacking construction according to claim 4, characterized in that: The inner wall of the bottom frame (1) is fixedly connected with a guide rod (15), and the movable frame (3) is slidably connected with the guide rod (15).

6. The anti-knocking structure for pipe jacking construction according to claim 5, characterized in that: The bottom surface of the movable frame (3) is provided with a groove (16), the inner wall of the groove (16) is fixedly connected to a plurality of rotating frames (17), the inner wall of each rotating frame (17) is rotatably connected to a roller (18), and the roller (18) is slidably connected to the bottom frame (1).

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