Displacement-preventing loess stratum jacking pipe one-way self-locking device

Abstract

The invention relates to the field of pipe jacking construction, in particular to an anti-displacement loess stratum pipe jacking one-way self-locking device. The anti-displacement loess stratum jacking pipe one-way self-locking device can clamp and fix a jacking pipe when soil is loosened, the jacking pipe is prevented from retreating and displacing, the construction efficiency and quality are improved, and the use convenience is improved. An anti-displacement loess stratum jacking pipe one-way self-locking device comprises a supporting base, multiple stages of air cylinders and the like, and the multiple stages of air cylinders are connected to the left side of the right portion of the supporting base. In the construction process, when soil is loosened and a jacking pipe can return or move, a bidirectional lead screw rotates, under the action of threads, sliding blocks move at the same time, a connecting frame rotates, and a fixing plate moves to make contact with the jacking pipe for clamping, so that the jacking pipe can be clamped and fixed when the soil is loosened, and the jacking pipe is prevented from returning and moving; the construction efficiency and quality are improved, and the use convenience is improved.

Description

Technical Field

[0001] The invention relates to the field of pipe jacking construction, and in particular to a one-way self-locking device for preventing displacement of a loess stratum pipe jacking. Background Art

[0002] Loess formation is a special geological structure, mainly composed of yellow or yellow-brown soil. This soil is widely distributed in China, especially in northern China, such as the Loess Plateau. Pipe jacking is a trenchless technology used to install structures such as pipelines, cables or tunnels underground without large-scale excavation from the ground. This technology is particularly suitable for crossing busy urban areas, rivers, railways, roads or other sensitive environments to reduce disturbance and impact on surface activities.

[0003] Existing construction in loess strata usually involves lifting the jacking pipe and placing it on a propulsion device, which is then moved to the construction area by moving the push plate on the propulsion device. However, due to the unique collapsible, high compressibility and low strength properties of the loess stratum, the jacking pipe is prone to displacement and retreat during the propulsion process, which not only affects the construction efficiency and quality, but also increases the difficulty and complexity of the construction.

[0004] Therefore, it is necessary to design a one-way self-locking device for jacking pipes in loess layers that can clamp and fix the jacking pipe when the soil is loose, prevent the jacking pipe from retreating and displacing, improve the efficiency and quality of construction, and improve the convenience of use. Summary of the invention

[0005] In order to overcome the disadvantages that the jacking pipe is prone to displacement and retreat during the advancement process due to the unique collapsible properties, high compressibility and low strength of the loess stratum, which not only affects the construction efficiency and quality but also increases the difficulty and complexity of the construction, the present invention provides an anti-displacement loess stratum jacking pipe one-way self-locking device which can clamp and fix the jacking pipe when the soil is loose, prevent the jacking pipe from retreating and displacing, improve the efficiency and quality of construction, and improve the convenience of use.

[0006] The technical solution is as follows: a one-way self-locking device for preventing displacement of loess strata jacking pipes, comprising a support base, a multi-stage cylinder, a pushing ring, a guide assembly, a locking assembly and a fixing assembly. A plurality of multi-stage cylinders are connected to the left side of the right side of the support base, a pushing ring is connected between the telescopic ends of the multi-stage cylinders, a guide assembly for guiding the movement of the jacking pipe is provided on the left side of the support base, a locking assembly for preventing the displacement and retreat of the jacking pipe is provided on the guide assembly, and a fixing assembly for limiting the position of the jacking pipe when the construction is completed is provided on the upper part of the guide assembly.

[0007] In a preferred embodiment of the present invention, the guide assembly includes a support frame, a guide wheel, a guide frame and a roller. The upper left side of the support base is connected to two left and right support frames, the front and rear parts of the support frame are rotatably connected to multiple guide wheels, the left side of the support base is connected to two left and right guide frames, and the inner side of the left guide frame is rotatably connected to multiple rollers.

[0008] In a preferred embodiment of the present invention, the guide wheels are all conical.

[0009] In a preferred embodiment of the present invention, the rollers are all made of rubber material and have good wear resistance.

[0010] In a preferred embodiment of the present invention, the locking assembly includes a ratchet, ratchet teeth, a connecting block, a torsion spring, a limiting rod and a toggle frame. The outer sides of the rollers are connected to the ratchets through the adjacent support frames, the front and rear sides of the upper part of the support frames are rotatably connected to a plurality of ratchets, the ratchets are in contact with the adjacent ratchets, the outer sides of the ratchets are connected to connecting blocks, the ratchets are connected to the adjacent support frames with torsion springs, the front and rear sides of the support frames are connected to a plurality of limiting rods, and the toggle frames are rotatably connected between the connecting blocks at the same lateral position.

[0011] In a preferred embodiment of the present invention, the fixing assembly includes a motor, a bidirectional screw, a transmission assembly, a slider, a connecting frame and a fixing plate. The upper front portion of the right guide frame is connected to the motor, the upper portion of the guide frame is rotatably connected to the bidirectional screw, the output shaft of the motor is connected to the bidirectional screw on the right, a transmission assembly is provided between the bidirectional screws, the front and rear portions of the bidirectional screw are both connected to sliders by threads, the sliders are slidably connected to adjacent guide frames, the lower portions of the sliders are rotatably connected to the connecting frames, and the lower portions of the two adjacent connecting frames are rotatably connected to the fixing plates.

[0012] In a preferred embodiment of the present invention, the transmission assembly includes a pulley and a flat belt, the front of the bidirectional screw is connected to a pulley, and the flat belt is wound between the pulleys.

[0013] In a preferred embodiment of the present invention, the sliders are all H-shaped.

[0014] In a preferred embodiment of the present invention, the fixing plate is arc-shaped.

[0015] In a preferred embodiment of the present invention, anti-slip grooves are provided on the lower side of the fixing plate.

[0016] Compared with the prior art, the present invention has the following advantages: 1. When the soil is loosened during the construction process, the jacking pipe may return or move. By rotating the bidirectional screw, the slider moves at the same time under the action of the thread, so that the connecting frame rotates, and the fixing plate moves to contact the jacking pipe for clamping. Thus, the jacking pipe can be clamped and fixed when the soil is loose, preventing the jacking pipe from retreating and moving, thereby improving the efficiency and quality of construction and the convenience of use.

[0017] 2. The present invention drives the push ring to move through a multi-stage cylinder, thereby pushing the top pipe to move, causing the guide wheel to rotate, and causing the roller to rotate for guidance. Under the action of the ratchet and the limiting rod, the guide wheel cannot rotate in the opposite direction to limit the top pipe, so that during construction, the top pipe can be guided and moved while limiting the roller from reversing to stabilize the position of the top pipe, thereby increasing friction, preventing displacement, and improving stability in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a structural schematic diagram of the present invention.

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the propulsion mechanism of the present invention.

[0021] Figure 4 It is a schematic diagram of the first three-dimensional structure of the guide assembly of the present invention.

[0022] Figure 5 It is a schematic diagram of the second three-dimensional structure of the guide assembly of the present invention.

[0023] Figure 6 It is a schematic diagram of the first three-dimensional structure of the locking assembly of the present invention.

[0024] Figure 7 It is a schematic diagram of the second three-dimensional structure of the locking assembly of the present invention.

[0025] Figure 8 It is a schematic diagram of a third partial three-dimensional structure of the locking assembly of the present invention.

[0026] Fig. 9 It is a schematic diagram of the first three-dimensional structure of the fixing assembly of the present invention.

[0027] Fig.10 It is a schematic diagram of the second three-dimensional structure of the fixing assembly of the present invention.

[0028] In the figure: 1. support base, 2. multi-stage cylinder, 3. push ring, 4. support frame, 5. guide wheel, 6. guide frame, 7. roller, 8. ratchet, 9. ratchet, 10. connecting block, 11. torsion spring, 12. limit rod, 13. toggle frame, 14. motor, 15. bidirectional screw, 16. transmission assembly, 17. slider, 18. connecting frame, 19. fixed plate. DETAILED DESCRIPTION

[0029] Although the present invention may be described with respect to a particular application or industry, those skilled in the art will recognize the broader applicability of the present invention. Those of ordinary skill in the art will recognize that terms such as above, below, upward, downward, etc. are used to describe the drawings and do not represent limitations on the scope of the present invention as defined by the appended claims. Any numerical designations such as first or second are merely exemplary and are not intended to limit the scope of the present invention in any way.

[0030] A one-way self-locking device for preventing displacement of loess strata jacking pipes, such as Figure 1-Figure 10As shown, it includes a support base 1, a multi-stage cylinder 2, a push ring 3, a support frame 4, a guide wheel 5, a guide frame 6, a roller 7, a ratchet 8, a ratchet 9, a connecting block 10, a torsion spring 11, a limiting rod 12, a toggle frame 13, a motor 14, a bidirectional screw 15, a transmission assembly 16, a slider 17, a connecting frame 18 and a fixing plate 19. Four multi-stage cylinders 2 are connected to the left side of the right side of the support base 1, a push ring 3 is connected between the telescopic ends of the multi-stage cylinder 2, and the upper side of the left side of the support base 1 is connected to the left and right sides. A support frame 4 is provided, and the front and rear parts of the support frame 4 are rotatably connected to three guide wheels 5, and the guide wheels 5 are all conical. The left part of the support base 1 is connected to two left and right guide frames 6, and the inner side of the left guide frame 6 is rotatably connected to three rollers 7, and the rollers 7 are all made of rubber and have good wear resistance. The outer sides of the rollers 7 pass through the adjacent support frames 4 and are connected to ratchets 8. The front and rear sides of the upper part of the support frame 4 are rotatably connected to three ratchets 9, and the ratchets 9 are in contact with the adjacent ratchets 8. The outer sides of the ratchets 9 are connected to connecting The connecting block 10 and the ratchet 9 are connected to the adjacent support frame 4 with a torsion spring 11, the front and rear sides of the support frame 4 are connected to three limiting rods 12, the connecting blocks 10 at the same lateral position are rotatably connected to the toggle frame 13, the front upper part of the right guide frame 6 is connected to a motor 14, the upper part of the guide frame 6 is rotatably connected to a bidirectional screw rod 15, the output shaft of the motor 14 is connected to the bidirectional screw rod 15 on the right, and a transmission assembly 16 is provided between the bidirectional screw rods 15, and the transmission assembly 16 includes a belt Wheel and flat belt, the front part of the two-way screw rod 15 is connected with a pulley, and a flat belt is wound between the pulleys. The front and rear parts of the two-way screw rod 15 are connected with sliders 17 through threads, and the sliders 17 are slidably connected to the adjacent guide frames 6. The sliders 17 are all H-shaped, and the lower parts of the sliders 17 are rotatably connected to the connecting frames 18. The lower parts of the two adjacent connecting frames 18 are rotatably connected with fixed plates 19. The fixed plates 19 are arc-shaped for easy fitting, and the lower side of the fixed plates 19 is provided with anti-slip grooves to prevent the top pipe from moving.

[0031] When the construction of loess strata requires one-way self-locking of the jacking pipe, the device can be used to make the support base 1 contact with the ground, lift the jacking pipe by a crane, place the jacking pipe on the guide wheel 5 on the right, make the jacking pipe contact with the push ring 3, and then start the multi-stage cylinder 2, drive the push ring 3 to move through the multi-stage cylinder 2, and then push the jacking pipe to move, so that the guide wheel 5 rotates, the guide wheels 5 are all conical, so that the jacking pipe contacts with the roller 7, so that the roller 7 rotates, the roller 7 is made of rubber material, and has good wear resistance, and then the jacking pipe is guided and moved. After being pushed to a suitable position, the multi-stage cylinder 2 is reversed to make The pushing ring 3 is moved in the opposite direction to reset, and then the next jacking pipe is lifted by the crane and placed on the guide wheel 5 on the right. Then the above operation is repeated to push the jacking pipe so that the jacking pipe moves to the stratum construction area. When the guide wheel 5 rotates, it will drive the ratchet 8 to rotate, so that the ratchet 9 and the connecting block 10 rotate and reset, and the torsion spring 11 is deformed and then restored, so that the toggle frame 13 moves and then recovers, so that the guide wheel 5 rotates normally. During the construction process, the soil is loosened, which will cause the jacking pipe to return or move. The motor 14 is started, and the motor 14 drives the right bidirectional screw rod 15 to rotate, so that the pulley rotates, so that the flat skin The belt rotates, thereby rotating the bidirectional screw rod 15 on the left, and under the action of the thread, the slider 17 moves inward at the same time. The sliders 17 are all H-shaped, so that the connecting frame 18 rotates, so that the fixing plate 19 moves to contact the top pipe for clamping. The fixing plate 19 is arc-shaped, which is easy to fit. The anti-skid pattern is used to prevent slipping, so that the top pipe can be clamped and fixed when the soil is loose, preventing the top pipe from retreating and moving, improving the efficiency and quality of construction, and improving the convenience of use. At the same time, under the action of the ratchet 9 and the limiting rod 12, the guide wheel 5 cannot rotate in the opposite direction, thereby limiting the top pipe, so that the top pipe can be pushed during construction. While the guiding movement is carried out, the roller 7 is restricted from reversing to stabilize the position of the jacking pipe, thereby increasing friction, preventing displacement, and improving the stability of use. After the soil stops loosening, the motor 14 operates in the reverse direction, so that the right bidirectional screw rod 15 rotates in the reverse direction, the pulley rotates in the reverse direction, the flat belt rotates in the reverse direction, and then the left bidirectional screw rod 15 rotates in the reverse direction. Under the action of the thread, the slider 17 moves outward at the same time, so that the connecting frame 18 rotates in the reverse direction, and the fixing plate 19 moves in the reverse direction and disengages from the jacking pipe, and then the jacking pipe continues to be pushed to move for construction. After the construction is completed, the multi-stage cylinder 2 is closed and the device can be taken away.

[0032] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A one-way self-locking device for preventing displacement of loess strata pipe jacking, characterized in that: The invention comprises a support base (1), a multi-stage cylinder (2), a push ring (3), a guide assembly, a locking assembly and a fixing assembly. The left side of the right part of the support base (1) is connected to a plurality of multi-stage cylinders (2), a push ring (3) is connected between the telescopic ends of the multi-stage cylinders (2), a guide assembly for guiding the movement of the jacking pipe is provided on the left part of the support base (1), a locking assembly for preventing the displacement and retreat of the jacking pipe is provided on the guide assembly, and a fixing assembly for limiting the position of the jacking pipe when the construction is finished is provided on the upper part of the guide assembly.

2. The one-way self-locking device for preventing displacement of loess strata pipe according to claim 1 is characterized in that: The guide assembly comprises a support frame (4), a guide wheel (5), a guide frame (6) and a roller (7); the upper left side of the support base (1) is connected to two left and right support frames (4); the front and rear parts of the support frame (4) are both rotatably connected to a plurality of guide wheels (5); the left side of the support base (1) is connected to two left and right guide frames (6); the inner side of the left guide frame (6) is rotatably connected to a plurality of rollers (7).

3. The one-way self-locking device for preventing displacement of loess strata pipe according to claim 2 is characterized in that: The guide wheels (5) are all conical.

4. The one-way self-locking device for preventing displacement of loess strata pipe according to claim 3 is characterized in that: The rollers (7) are all made of rubber and have good wear resistance.

5. The one-way self-locking device for preventing displacement of loess strata pipe according to claim 4 is characterized in that: The locking assembly comprises a ratchet (8), ratchet teeth (9), a connecting block (10), a torsion spring (11), a limiting rod (12) and a toggle frame (13); the outer side of the roller (7) passes through the adjacent support frame (4) and is connected to the ratchet (8); the front and rear sides of the upper part of the support frame (4) are rotatably connected to a plurality of ratchets (9); the ratchet teeth (9) are in contact with the adjacent ratchet wheels (8); the outer side of the ratchet teeth (9) are connected to the connecting block (10); the ratchet teeth (9) and the adjacent support frame (4) are connected to a torsion spring (11); the front and rear sides of the support frame (4) are connected to a plurality of limiting rods (12); and the toggle frame (13) is rotatably connected between the connecting blocks (10) at the same lateral position.

6. The one-way self-locking device for preventing displacement of loess strata pipe according to claim 5, characterized in that: The fixing assembly comprises a motor (14), a bidirectional screw rod (15), a transmission assembly (16), a slider (17), a connecting frame (18) and a fixing plate (19). The front upper part of the right guide frame (6) is connected with the motor (14). The upper part of the guide frame (6) is rotatably connected with the bidirectional screw rod (15). The output shaft of the motor (14) is connected with the right bidirectional screw rod (15). The transmission assembly (16) is arranged between the bidirectional screw rods (15). The front and rear parts of the bidirectional screw rod (15) are both connected with sliders (17) by threads. The sliders (17) are slidably connected with the adjacent guide frames (6). The lower parts of the sliders (17) are rotatably connected with the connecting frame (18). The lower parts of the two adjacent connecting frames (18) are rotatably connected with the fixing plate (19).

7. The one-way self-locking device for preventing displacement of loess strata pipe according to claim 6, characterized in that: The transmission assembly (16) comprises a pulley and a flat belt. The front part of the bidirectional screw rod (15) is connected with a pulley, and a flat belt is wound between the pulleys.

8. The one-way self-locking device for preventing displacement of loess strata pipe according to claim 7, characterized in that: The slide blocks (17) are all H-shaped.

9. The one-way self-locking device for preventing displacement of loess strata pipe according to claim 8, characterized in that: The fixing plate (19) is arc-shaped.

10. The one-way self-locking device for preventing displacement of loess strata pipe according to claim 9, characterized in that: The lower side of the fixing plate (19) is provided with anti-skid patterns.

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