A pipe roof support structure to reduce the displacement of surrounding soil

Abstract

This invention discloses a pipe roof support structure for reducing surrounding soil displacement, comprising a pipe, rails, and a worm gear. Two or more rails are arranged on the inner wall of the pipe, and each rail is equipped with two or more power switching mechanisms. The first end of the worm gear is fixedly connected to a support plate via a bearing seat, and the second end of the worm gear is fixedly connected to a base via a bearing seat. A fixed support plate is fixedly connected to the middle of the worm gear near the first end via a bearing. An impeller is coaxially fixedly connected between the worm gear and the fixed support plate. The base is slidably connected to the rails, and the support plate and fixed support plate are slidably connected to the rails. This invention provides power through the rotation of the impeller. The cooperation of the power switching mechanism and the guiding and reinforcing mechanism allows cement grout to flow into the soil around the pipe with a relatively small grouting pressure, making the soil around the pipe more stable.

Description

Technical Field

[0001] This invention relates to the field of pipe roof support structures for reducing displacement of surrounding soil. Specifically, it relates to a pipe roof support structure for reducing displacement of surrounding soil. Background Technology

[0002] In traditional tunnel construction, steel pipes are inserted after successful installation and cement grout is injected through them. However, for shallow-buried tunnel construction, when the strata are soft and the ground buildings or structures are complex, excessive grouting pressure can cause displacement of the soil around the steel pipes. Insufficient grouting pressure will prevent the grout from spreading over long distances and thus fail to form an integrated pre-support structure, affecting the safety of ground road traffic and ground buildings or structures. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is to provide a stable pipe roof support structure that reduces the displacement of the surrounding soil.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a pipe roof support structure for reducing the displacement of surrounding soil, comprising a pipe, rails, and a worm gear; two or more rails are provided on the inner wall of the pipe, and a power switching mechanism is provided on the rails; the first end of the worm gear is fixedly connected to a support plate via a bearing seat, the second end of the worm gear is fixedly connected to a base via a bearing seat, a fixed support plate is fixedly connected to the middle part of the worm gear near the first end via a bearing, an impeller is coaxially fixedly connected to the worm gear, the base is slidably connected to the rails, and the support plate is on the rails The upper sliding connection is provided, and the fixed support plate is slidably connected on the track; the base is provided with a guide and reinforcement mechanism; the first end of the bracket is slidably connected to the base, and a drive shaft is rotatably mounted on the bracket. A worm gear is fixedly connected to the middle of the drive shaft, and a cam is fixedly mounted to the end of the drive shaft; a sliding groove is opened in the fixed support plate, and the second end of the bracket slides in the sliding groove. A third spring is fixedly connected to one end of the sliding groove, and the other end of the third spring is fixedly connected to the bracket; the pipe has two or more through holes, and each through hole is fitted with a rubber plug.

[0005] The aforementioned pipe roof support structure for reducing surrounding soil displacement includes a power switching mechanism comprising a support rod, a sliding rod, and a limiting block. The first end of the support rod passes through the fixed support plate, and the second end of the support rod abuts against the limiting block. An inclined push plate is provided at the first end of the support rod. The sliding rod is slidably installed within the support rod, and its first end extends out of the support rod and abuts against the cam. The second end of the sliding rod is fixedly connected to a top block. A first groove is provided on the track, and a locking plate is slidably connected within the first groove. A connecting rod is fixedly connected to the middle of the locking plate, and a connecting block is fixedly connected to the other end of the connecting rod. The connecting block cooperates with the top block. A first limiting groove is provided on the track, and a second groove is provided on the inner wall of the first limiting groove. A first spring is fixedly connected within the second groove, and a locking block is fixedly connected to the other end of the first spring. The locking block is slidably connected within the second groove. The limiting block is slidably installed within the first limiting groove and is fixedly connected to the connecting block. A second limiting groove is provided on the limiting block, and the locking block corresponds to the second limiting groove.

[0006] The aforementioned pipe roof support structure for reducing surrounding soil displacement includes a guiding and reinforcing mechanism comprising a push rod and a rack. A driven wheel is fixedly connected to the other end of the drive shaft, and the push rod is fixedly mounted on the driven wheel. A placement groove is provided on the base, and a first pad is fixedly installed at the bottom of the placement groove. A second spring is fixedly installed on the first pad, and the other end of the second spring is fixedly connected to the second pad. The second pad abuts against the rack, and the driven wheel meshes with the rack. A round rod is fixedly installed at one end of the rack, and the push rod abuts against the round rod. A guide groove is provided on the rack. A slot corresponding to the through hole on the pipe is provided on the upper end of the side wall of the base. The placement groove communicates with the slot, and the rack corresponds to the slot. A push block is installed on the outer side wall of the base, and the push block is directly below the slot.

[0007] The technical solution of the present invention achieves the following beneficial technical effects:

[0008] 1. In this invention, the support rod of the power switching mechanism abuts against the limiting block, causing the support to slide, the worm gear and worm to mesh, and power transmission to begin. The guide and reinforcement mechanism pushes out the rack and inserts it into the soil layer. Cement grout is injected into the surrounding soil layer along the guide groove, instead of through a simple grouting hole. This allows for a larger grouting range with a smaller grouting pressure, forming a complete advanced support structure. Furthermore, the fixing rod not only increases the grouting range but also improves the bonding effect between the grouting pipe and the soil layer, gradually forming a stable support structure around the pipe, reducing the displacement of the surrounding soil, and ultimately forming a stable support structure.

[0009] 2. This invention provides power through the flow of cement slurry and the rotation of the impeller. The support rod abuts against the limiting block, allowing the power to be transmitted to the worm gear through the movement of the support, completing the power switching. The rotation of the driven wheel and the push rod cause the rack to push open the rubber plug on the pipe wall, thereby allowing the slurry in the pipe to spread better in the lateral and longitudinal directions through the guide groove on the rack, so that a stable support structure is gradually formed around the pipe. At the same time, the cam abuts against the sliding rod and causes the limiting block to slide. Under the action of the third spring, the worm gear and worm are separated again, the power transmission is interrupted, and the slurry continues to move forward under the interaction of the impeller. The cycle continues, realizing the support of the entire pipeline, improving efficiency and saving costs. Attached Figure Description

[0010] Figure 1 Overall structural diagram of the invention;

[0011] Figure 2 Overall top view of the invention;

[0012] Figure 3 A schematic diagram of the power switching mechanism at point A of the present invention;

[0013] Figure 4 A schematic diagram of the power switching mechanism at point B of the present invention;

[0014] Figure 5 A schematic diagram of the axial structure of the inclined push plate of the present invention;

[0015] Figure 6 Schematic diagram of the guiding and reinforcing mechanism of this invention;

[0016] Figure 7 A schematic diagram of the axial structure of the rack of the present invention.

[0017] The reference numerals in the figure are as follows: 1-pipe; 2-track; 3-worm gear; 4-power switching mechanism; 401-support rod; 402-sliding rod; 403-sloping push plate; 404-top block; 405-connecting block; 406-connecting rod; 407-clamping plate; 408-first slide groove; 409-limiting block; 410-first limiting groove; 411-second slide groove; 412-first spring; 413-clamping block; 414-second limiting groove; 5-guide. Reinforcing mechanism; 501-Driven wheel; 502-Push rod; 503-Placement groove; 504-First pad; 505-Second spring; 506-Second pad; 507-Rack; 508-Round rod; 509-Guide groove; 510-Push block; 6-Impeller; 7-Worm gear; 8-Drive shaft; 9-Fixed support plate; 10-Bracket; 11-Third spring; 12-Cam; 13-Base; 14-Support plate; 15-Rubber plug; 16-Sliding groove. Detailed Implementation

[0018] This embodiment describes a pipe roof support structure that reduces the displacement of surrounding soil. Please refer to [link / reference]. Figure 1-2 The system includes a pipe 1, a track 2, and a worm gear 3. Two or more tracks 2 are provided on the inner wall of the pipe 1, and a power switching mechanism 4 is provided on each track 2. The first end of the worm gear 3 is fixedly connected to a support plate 14 via a bearing seat, and the second end of the worm gear 3 is fixedly connected to a base 13 via a bearing seat. A fixed support plate 9 is fixedly connected to the middle part of the worm gear 3 near the first end via a bearing. An impeller 6 is coaxially fixedly connected to the worm gear 3. The base 13 is slidably connected to the track 2, the support plate 14 is slidably connected to the track 2, and the fixed support plate 9 is slidably connected to the track 2. A guide and reinforcement mechanism 5 is provided on the base 13; the first end of the bracket 10 is slidably connected to the base 13, and a drive shaft 8 is rotatably mounted on the bracket 10. A worm gear 7 is fixedly connected to the middle of the drive shaft 8, and a cam 12 is fixedly mounted at the end of the drive shaft 8; a sliding groove 16 is provided in the fixed support plate 9, and the second end of the bracket 10 slides in the sliding groove 16. A third spring 11 is fixedly connected to one end of the sliding groove 16, and the other end of the third spring 11 is fixedly connected to the bracket 10; two or more through holes are provided on the pipe 1, and a rubber plug 15 is installed on each through hole.

[0019] like Figure 3-5As shown, the power switching mechanism 4 includes a support rod 401, a sliding rod 402, and a limiting block 409. The first end of the support rod 401 passes through the fixed support plate 9, and the second end of the support rod 401 abuts against the limiting block 409. A slanted push plate 403 is provided at the first end of the support rod 401. The sliding rod 402 is slidably installed inside the support rod 401. The first end of the sliding rod 402 passes through the support rod 401 and abuts against the cam 12. The second end of the sliding rod 402 is fixedly connected to a top block 404. A first sliding groove 408 is provided on the track 2. A retaining plate 407 is slidably connected within the first sliding groove 408. A connecting rod 406 is fixedly connected to the middle of the retaining plate 407. A connecting block 405 is fixedly connected to the other end of the connecting rod 406. The connecting block 405 cooperates with the top block 404. A first limiting groove 410 is provided on the track 2, and a second sliding groove 411 is provided on the inner wall of the first limiting groove 410. A first spring 412 is fixedly connected in the second sliding groove 411, and a locking block 413 is fixedly connected to the other end of the first spring 412. The locking block 413 is slidably connected in the second sliding groove 411. A limiting block 409 is slidably installed in the first limiting groove 410. The limiting block 409 is fixedly connected to the connecting block 405. A second limiting groove 414 is provided on the limiting block 409, and the locking block 413 corresponds to the second limiting groove 414. Power is provided by the flow of cement slurry and the rotation of impeller 6, and the power switching mechanism 4 realizes the transmission and cut-off of power, realizing the forward movement, stopping, and cyclic operation of the device. This allows one device per pipeline to support the entire pipeline, improving efficiency and saving costs.

[0020] like Figure 6 , Figure 7As shown, the guiding and reinforcing mechanism 5 includes a push rod 502 and a rack 507. A driven wheel 501 is fixedly connected to the other end of the transmission shaft 8, and the push rod 502 is fixedly mounted on the driven wheel 501. A placement groove 503 is provided on the base 13. A first pad 504 is fixedly installed at the bottom of the placement groove 503. A second spring 505 is fixedly installed on the first pad 504. A second pad 506 is fixedly connected to the other end of the second spring 505. The second pad 506 abuts against the rack 507. The driven wheel 501 meshes with the rack 507. A round rod 508 is fixedly installed at one end of the rack 507, and the push rod 502 abuts against the round rod 508. 08. A guide groove 509 is provided on the rack 507, and a slot corresponding to the through hole on the pipe 1 is provided on the upper side wall of the base 13. The placement groove 503 is connected to the slot, and the rack 507 corresponds to the slot. A push block 510 is installed on the outer side wall of the base 13, and the push block 510 is directly below the slot. When the power switching mechanism 4 transmits power to the worm gear 7, the push rod 502 pushes the rack 507 to the through hole on the pipe 1, pushes open the rubber plug 15, so that the cement slurry can be smoothly diffused into the soil around the pipe 1, making the surrounding soil more stable, greatly reducing the displacement of the surrounding soil, and not affecting the safety of ground road traffic and ground buildings or structures.

[0021] Work process: Place the device along track 2 and start injecting cement slurry into pipe 1. The impeller 6 starts to rotate as the cement slurry is injected, driving the worm gear 3 to rotate as well. Under the force of the impeller 6 and the cement slurry, the device starts to move deeper into the pipe along track 2. When the support rod 401 abuts against the limiting block 409 installed on track 2, the device stops moving forward. At this time, the slot on the base 13 corresponds to the through hole on pipe 1. Under the thrust of the slurry, the inclined push plate 403 starts to abut against the bracket 10 and gradually pushes the bracket 10 to slide in the sliding groove 16, compressing the third spring 11. The bracket 10 slides towards the worm gear 3 through the slide on the base 13, so that the worm wheel 7 and the worm gear 3 mesh. The worm wheel 7 rotates, driving the transmission shaft 8 to rotate.

[0022] At this time, the driven wheel 501 rotates, causing the rack 507 meshing with the driven wheel 501 to gradually slide towards the through hole on the pipe 1. The guide block 507 gradually extends from the slot on the base 13. The push rod 502 rotates together with the driven wheel 501. The push rod 502 further pushes the rack 507 through the round rod 508, causing the rack 507 to enter the through hole on the pipe 1 and push out the rubber plug 15. The guide groove 509 on the rack 507 allows some cement slurry to flow into the soil around the pipe 1, making the soil around the pipe 1 more solid.

[0023] Cam 12 rotates together with drive shaft 8. As cam 12 rotates, its diameter gradually increases, causing sliding rod 402, which abuts against cam 12, to slide within support rod 401 and gradually abut against connecting block 405. Due to the corresponding inclined surfaces of top block 404 and connecting block 405, limiting block 409 slides within first limiting groove 410. Due to the cooperation of locking block 413 and second limiting groove 414, connecting block 405 can only slide in one direction. Due to the restriction of locking plate 407 within first sliding groove 408, limiting block 409 will not be washed away by the arriving cement slurry, ensuring the normal operation of the device.

[0024] When the limiting block 409 is no longer pressing against the support rod 401, the bracket 10 slides back to its original position under the action of the third spring 11, so that the worm gear 7 and the worm 3 no longer mesh. The device continues to advance into the depth of the pipe 1 under the action of cement slurry and impeller 6. The push block 510 further pushes the rack 507 into the through hole on the pipe 1, which will not affect the continued operation of the device.

[0025] At this point, the support rod 401 abuts against the next limiting block 409 inside the pipe 1, and the second working process begins. Under the action of the second spring 505 in the placement groove 503, the next rack 507 is pushed to the slot on the base 13 by the second pad block 502. This process is repeated until each through hole in the entire pipe 1 has a rack 507 that allows a portion of the cement slurry to flow into the soil around the pipe 1 through the through hole, making the soil around the pipe 1 more solid.

[0026] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of the claims of this patent application.

Claims

1. A displacement pipe roof support structure for reducing displacement of surrounding soil, characterized by, The system includes a pipe (1), a track (2), and a worm gear (3). The inner wall of the pipe (1) is provided with two or more tracks (2), and a power switching mechanism (4) is provided on the track (2). The first end of the worm gear (3) is fixedly connected to the support plate (14) through a bearing seat, and the second end of the worm gear (3) is fixedly connected to the base (13) through a bearing seat. A fixed support plate (9) is fixedly connected to the middle part of the worm gear (3) near the first end through a bearing. An impeller (6) is coaxially fixedly connected to the worm gear (3). The base (13) is slidably connected to the track (2), the support plate (14) is slidably connected to the track (2), and the fixed support plate (9) is slidably connected to the track (2). A guide and reinforcement mechanism (5) is provided on the base (13); the first end of the bracket (10) is slidably connected to the base (13), a drive shaft (8) is rotatably installed on the bracket (10), a worm gear (7) is fixedly connected to the middle of the drive shaft (8), and a cam (12) is fixedly installed at the end of the drive shaft (8); a sliding groove (16) is provided in the fixed support plate (9), the second end of the bracket (10) slides in the sliding groove (16), a third spring (11) is fixedly connected to one end of the sliding groove (16), and the other end of the third spring (11) is fixedly connected to the bracket (10); two or more through holes are provided on the pipe (1), and rubber plugs (15) are installed on each through hole.

2. The pipe-roof supporting structure for reducing displacement of surrounding soil according to claim 1, wherein The power switching mechanism (4) includes a support rod (401), a sliding rod (402), and a limiting block (409). The first end of the support rod (401) passes through the fixed support plate (9), and the second end of the support rod (401) abuts against the limiting block (409). The first end of the support rod (401) is provided with an inclined push plate (403). The sliding rod (402) is slidably installed in the support rod (401). The first end of the sliding rod (402) passes through the support rod (401) and abuts against the cam (12). The second end of the sliding rod (402) is fixedly connected to the top block (404). A first groove (408) is provided on the track (2). A clamping plate (407) is slidably connected in the first groove (408). A connecting rod (406) is fixedly connected to the middle of the clamping plate (407). A connecting block (405) is fixedly connected to the other end of the connecting rod (406), and the connecting block (405) cooperates with the top block (404); a first limiting groove (410) is provided on the track (2), and a second sliding groove (411) is provided on the inner wall of the first limiting groove (410). A first spring (412) is fixedly connected in the second sliding groove (411), and a locking block (413) is fixedly connected to the other end of the first spring (412). The locking block (413) is slidably connected in the second sliding groove (411); a limiting block (409) is slidably installed in the first limiting groove (410), and the limiting block (409) is fixedly connected to the connecting block (405). A second limiting groove (414) is provided on the limiting block (409), and the locking block (413) corresponds to the second limiting groove (414).

3. The pipe roof support structure for reducing displacement of surrounding soil according to claim 1, characterized in that, The guiding and reinforcing mechanism (5) includes a push rod (502) and a rack (507). A driven wheel (501) is fixedly connected to the other end of the transmission shaft (8), and the push rod (502) is fixedly installed on the driven wheel (501). A placement groove (503) is provided on the base (13). A first pad (504) is fixedly installed at the bottom of the placement groove (503). A second spring (505) is fixedly installed on the first pad (504). A second pad (506) is fixedly connected to the other end of the second spring (505). The second pad (506) abuts against the rack (507). 07), the driven wheel (501) meshes with the rack (507), a round rod (508) is fixedly installed at one end of the rack (507), the push rod (502) abuts against the round rod (508), a guide groove (509) is provided on the rack (507), a slot corresponding to the through hole on the pipe (1) is provided on the upper end of the side wall of the base (13), the placement slot (503) communicates with the slot, the rack (507) corresponds to the slot, a push block (510) is installed on the outer side wall of the base (13), and the push block (510) is directly below the slot.

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