Subway tunnel construction support and protection device

Abstract

The present invention relates to the technical field of subway tunnel construction equipment, and in particular to a subway tunnel construction support and protection device. Through a support frame, a lifting component, a flexible pressing component, and an elastic pad, the lifting component drives the flexible pressing component to push the elastic pad, so that the tunnel segment can be flexibly supported. At the same time, the elastic pad can be closely fitted with the tunnel segment, which is conducive to adjustment as the size of the segment is deformed, and is conducive to adapting to arc segments of tunnels of various specifications, while avoiding local stress concentration on the segment. The contact between the rigid support and the segment is usually hard contact, which is easy to produce local indentation or wear on the surface of the segment, while the contact between the flexible support and the segment is relatively soft, which can reduce damage to the surface of the segment and protect the structural integrity of the segment.

Description

Technical Field

[0001] The invention relates to the technical field of subway tunnel construction equipment, in particular to a subway tunnel construction support and protection device. Background Art

[0002] With the rapid development of urban rail transit, the construction of subway tunnels is constantly advancing. As the main load-bearing structure of the tunnel, the quality and integrity of the subway tunnel segment are directly related to the safe operation of the subway. The subway tunnel is usually a circular tunnel during excavation and construction, and arc-shaped segments are laid on its inner wall. During the construction of the subway tunnel, due to various reasons, the segments may be damaged to varying degrees, such as cracks, peeling, and corner loss. These damages will not only affect the appearance of the tunnel, but more importantly, they may reduce the bearing capacity and waterproof performance of the segments, thereby posing a threat to the safe operation of the subway. Therefore, it is very necessary to repair the segments in time.

[0003] At present, the existing pipe segment repair support devices can usually only repair damage at specific locations. These devices are often designed with fixed structures and support angles, which are difficult to adapt to the repair needs of pipe segment damage at different locations. For example, some support devices can only effectively support damage at the top or bottom of the pipe segment, but it is difficult to provide stable support for damage on the side or oblique side of the pipe segment. This limitation means that in the actual repair process, construction workers often need to select different support devices according to different damage locations, or make complex adjustments and modifications to existing support devices, which not only increases the difficulty and cost of construction, but also reduces the efficiency of repair.

[0004] In addition, the existing segment repair support device still has the following problems during use:

[0005] Due to the differences in the shapes and sizes of subway tunnel segments, the existing support devices are difficult to adapt to the repair needs of arc segments of different specifications. For example, for tunnel segments of different diameters, the existing support devices may not be able to provide appropriate support force and support angle, and have poor adaptability; some support devices require the use of complex tools and equipment during the installation and adjustment process, and the operation is cumbersome. During use, they may need to be adjusted and fixed frequently, which affects the progress of the repair work and increases the workload of construction personnel. The operation is complicated, which seriously affects the efficiency of construction repairs; for some larger or severely damaged segments, the existing support devices may not be able to provide sufficient stability, and are prone to shaking or shifting during the repair process. The lack of stability affects the quality of the repair.

[0006] To this end, a subway tunnel construction support and protection device is invented, which can support tunnel segments at multiple angles, can adapt to arc segments of tunnels of various specifications, is simple to operate and has good stability, so as to solve the problems arising from the above-mentioned background technology. Summary of the invention

[0007] In order to solve the problems arising from the above-mentioned background technology, a subway tunnel construction support and protection device is invented which can support tunnel segments at multiple angles, can adapt to arc segments of tunnels of various specifications, is easy to operate and has good stability.

[0008] The technical solution of the present invention is to include a fixed frame, wherein the fixed frame is erected in the middle of a tunnel, a movable rod is arranged in the middle of the fixed frame, and further includes:

[0009] A plurality of support frames capable of supporting tunnel segments, each of the support frames being slidably arranged on a movable rod, the support frames acting on the tunnel segments, the support frames being able to undergo telescopic deformation according to the size of the tunnel segments so as to achieve a close fit with the tunnel segments, the support frames comprising a mobile frame, a lifting assembly, a flexible pressing assembly, and an elastic pad, a sleeve being arranged on the inner side of the mobile frame, the sleeve being slidably arranged on the movable rod, the lifting assembly being detachably arranged on the mobile frame, a flexible pressing assembly being arranged on the lifting assembly, an elastic pad being arranged on the flexible pressing assembly, and the flexible pressing assembly being arranged on the elastic pad, and when the flexible pressing assembly pushes the elastic pad to contact the tunnel segments, the elastic pad is elastically deformed so as to be in close fit with the segments;

[0010] A telescopic adjustment mechanism, used for driving the support frame to perform telescopic adjustment, so as to push the support frame to press and support the pipe segments in the tunnel of different sizes;

[0011] The angle adjustment mechanism is used to drive the angle of the support frame to be adjusted so that the support frame can support the pipe segments at any angle in the tunnel.

[0012] Preferably, a plurality of support leg assemblies evenly distributed along its circumference are respectively provided on the front and rear sides of the fixed frame, and the support leg assemblies include a hydraulic telescopic rod, a fixed sleeve is provided at the output end of the hydraulic telescopic rod, a support leg compression spring is provided in the fixed sleeve, a slidable sliding rod is provided in the fixed sleeve, one end of the sliding rod is fixedly connected to the support leg compression spring and the other end is provided with a walking wheel in contact with the tunnel segment.

[0013] Preferably, the flexible pressing assembly comprises a pressing frame and a flexible connecting member, the pressing frame is arranged on the lifting assembly, and one end of the flexible connecting member is connected to the elastic pad.

[0014] Preferably, the flexible connecting member is slidably arranged on the pressure frame, and the flexible connecting member includes a sliding rod, a sliding seat, and a pressure spring. The sliding rod is provided with a pressure spring, and the other end of the pressure spring is connected to the sliding seat. A sliding groove is provided on the pressure frame, and the sliding seat is slidably connected to the pressure frame and can slide along the sliding groove. One end of the sliding rod is hingedly connected to the elastic pad, and the other end passes through the sliding seat and extends out of the sliding groove.

[0015] Preferably, the sliding seat comprises a threaded seat, the threaded seat is slidably connected to the pressure frame, a fine-tuning bolt is threadedly connected to the threaded seat, an upper end of the fine-tuning bolt is in contact with the pressure spring and the two can rotate relative to each other.

[0016] Preferably, the lifting assembly is detachably connected to the mobile frame, and is used for driving the flexible pressing assembly to be lifted and lowered and adjusted, comprising an arc-shaped connecting plate detachable from the mobile frame, a rotatable rotating screw is provided on the arc-shaped connecting plate, a tripod is provided on the arc-shaped connecting plate, movable blocks are respectively provided on both sides of the tripod, the two movable blocks are relatively arranged on both sides of the arc-shaped connecting plate and can move up and down along the tripod, a connecting frame is provided in the middle of the two movable blocks, the connecting frame is fixedly connected to the pressing frame, the two movable blocks are slidably arranged on the pressing frame, and the rotating screw is threadedly connected to the connecting frame.

[0017] Preferably, a limiting plate is provided on the movable frame, a plurality of limiting holes are formed on the limiting plate, limiting bolts are detachably connected in the limiting holes, and threaded holes which can be threadably matched with the limiting bolts are formed on the arc-shaped connecting plate.

[0018] Preferably, the telescopic adjustment mechanism includes a driving motor, which is arranged on a mobile frame. A driving gear is arranged at the output end of the driving motor, and the driving gear is rotatably connected to the mobile frame. A driven gear is arranged on the mobile frame, and a driving bevel gear is coaxially arranged on the driven gear. A driven bevel gear is arranged at the lower end of the rotating screw, and the driven bevel gear is meshed with the driving bevel gear when the arc-shaped connecting plate is installed on the mobile frame.

[0019] Preferably, the angle adjustment mechanism includes a second motor, a rotating worm is provided at the output end of the second motor, the rotating worm is rotatably connected to a fixed frame, a rotating worm wheel threadedly connected to the rotating worm is provided on the fixed frame, and the rotating worm wheel is fixedly connected to the movable rod.

[0020] Preferably, the movable rod is provided with a limiting mechanism which can limit the angle of the movable frame, the limiting mechanism includes a plurality of sockets which are opened in the sleeve and evenly distributed along the circumference of the sleeve, the movable frame is provided with a pin which can be inserted into the socket, the pin is sleeved with a limiting compression spring, and the limiting compression spring is fixed on the movable frame.

[0021] The technical solution of the present invention can achieve the following beneficial effects:

[0022] (1) Through the support frame, lifting assembly, flexible pressing assembly, and elastic pad, the lifting assembly drives the flexible pressing assembly to push the elastic pad, so that the tunnel segment can be flexibly supported. At the same time, the elastic pad can be closely fitted with the tunnel segment, which is conducive to adjustment as the size of the segment is deformed, and is conducive to adapting to the curved segments of tunnels of various specifications. At the same time, local stress concentration on the segment is avoided. The contact between the rigid support and the segment is usually hard contact, which is easy to cause local indentation or wear on the surface of the segment, while the contact between the flexible support and the segment is relatively soft, which can reduce damage to the segment surface and protect the structural integrity of the segment;

[0023] (2) The angle adjustment mechanism can support the tunnel segments from multiple angles. Regardless of whether the damaged segment is at the top, bottom, side or diagonal, it can provide effective support force, greatly improving the versatility of tunnel segment support and protection.

[0024] (3) A detachable arc-shaped connecting plate, a limit plate, and a limit bolt are provided, and multiple support frames can be installed on the limit plate, so that multiple support frames can be combined to support multiple segments of the same tunnel section, thereby increasing the support range of the tunnel segments;

[0025] (3) A fixed frame and a support leg assembly are provided, and the support leg assembly is used to support the tunnel segment, so that the movable rod of the device is exactly in the center of the tunnel, which is conducive to more stability when the support frame supports the tunnel segment;

[0026] The technical solution of the present invention has broad application prospects in the technical field of subway tunnel construction equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an axonometric drawing of the present invention.

[0028] Figure 2 It is the front view of the present invention.

[0029] Figure 3 It is a top view of the present invention.

[0030] Figure 4 It is a right side full sectional view of the present invention.

[0031] Figure 5 It is a front view full cutaway view of the present invention.

[0032] Figure 6 It is an enlarged view of the fixing frame of the present invention.

[0033] Figure 7 It is an enlarged view of the support frame of the present invention.

[0034] Figure 8 It is an enlarged view of the mobile frame and connecting components of the present invention.

[0035] Fig. 9 It is a cutaway view of the support leg assembly of the present invention.

[0036] Fig.10 It is an enlarged view of the limiting mechanism of the present invention.

[0037] Fig.11 This is a three-dimensional diagram of two supporting frames of the present invention installed in parallel.

[0038] Fig.12 This is a three-dimensional diagram of two supporting frames of the present invention being symmetrically installed.

[0039] Among them, 1. fixed frame, 2. movable rod, 3. support frame, 4. mobile frame, 5. lifting assembly, 6. flexible pressing assembly, 7. elastic pad, 8. sleeve, 9. telescopic adjustment mechanism, 10. angle adjustment mechanism, 11. support foot assembly, 12. hydraulic telescopic rod, 13. fixed sleeve, 14. support foot compression spring, 15. sliding rod, 16. walking wheel, 17. pressing frame, 18. flexible connector, 19. sliding rod, 20. sliding seat, 21. pressing spring, 22. slide groove, 23. thread Seat, 24. Fine-tuning bolt, 25. Arc-shaped connecting plate, 26. Rotating screw, 27. Tripod, 28. Movable block, 29. Connecting frame, 30. Limiting plate, 31. Limiting hole, 32. Limiting bolt, 33. Threaded hole, 34. Driving motor, 35. Active gear, 36. Driven gear, 37. Active bevel gear, 38. Driven bevel gear, 39. Second motor, 40. Rotating worm, 41. Rotating worm wheel, 42. Limiting mechanism, 43. Socket, 44. Latch, 45. Limiting compression spring. DETAILED DESCRIPTION

[0040] The technical solutions of various embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0041] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] like Figure 1 to Figure 12 The subway tunnel construction support and protection device shown includes a fixed frame 1. In a specific embodiment, the fixed frame 1 is erected in the middle of the tunnel. The front and rear ends of the fixed frame 1 are respectively set to be circular plates, and the middle is connected by a connecting rod. A control panel is also fixedly installed at one end of the fixed frame 1 to facilitate electrical control of various electrical controls of the device. A movable rod 2 is fixedly mounted on the connecting rod in the middle of the fixed frame 1. In this embodiment, the cross section of the movable rod 2 is set to be a regular hexagon. It also includes:

[0043] A plurality of support frames 3 can support tunnel segments, each support frame 3 is slidably connected to the movable rod 2, the support frames 3 act on the tunnel segments, the support frames 3 can undergo telescopic deformation according to the size of the tunnel segments to achieve a close match with the tunnel segments, and can support tunnel segments of different specifications and sizes. The plurality of support frames 3 are movably arranged on the movable rod 2 in sequence, and by moving each support frame 3 on the movable rod 2, tunnel segments at different positions in the tunnel can be supported.

[0044] The support frame 3 includes a moving frame 4, a lifting assembly 5, a flexible pressing assembly 6, and an elastic pad 7. A sleeve 8 is sleeved on the inner side of the moving frame 4. The sleeve 8 is slidably sleeved on the movable rod 2. The moving frame 4 is set in a cylindrical shape. When the movable rod 2 rotates, the sleeve 8 is driven to rotate. The rotation of the sleeve 8 drives the moving frame 4 to rotate, thereby adjusting the angle of the moving frame 4.

[0045] The lifting assembly 5 is detachably fixed on the mobile frame 4, and a flexible pressing assembly 6 is installed on the lifting assembly 5. When the lifting assembly 5 is installed on the mobile frame 4, the lifting assembly 5 can drive the flexible pressing assembly 6 to approach the tunnel segment. An elastic pad 7 is connected to the flexible pressing assembly 6. The elastic pad 7 is flat in the initial state. After contacting with the tunnel segment and pressing and supporting, it deforms accordingly according to the size of the tunnel segment. The material of the elastic pad 7 can be selected as an elastic metal pad material such as spring steel. Spring steel has excellent elasticity and toughness, and can deform and restore to its original state after being subjected to force;

[0046] The elastic pad 7 can also be made of beryllium bronze. The beryllium bronze pad can be used as a high-performance elastic support material to provide reliable support and good sealing performance. At the same time, the corrosion resistance of beryllium bronze can ensure that the pad is not easy to rust in a humid tunnel environment, thereby extending its service life.

[0047] When the flexible pressing component 6 pushes the elastic pad 7 to contact the tunnel segment, the elastic pad 7 is elastically deformed to fit with the segment. The lifting component 5 drives the flexible pressing component 6 to push the elastic pad 7, so that the tunnel segment can be flexibly supported. At the same time, the elastic pad 7 can be closely fitted with the tunnel segment, which is conducive to adjustment as the size of the segment is deformed, and is conducive to adapting to the arc segments of tunnels of various specifications. At the same time, local stress concentration is avoided on the segment. The contact between the rigid support and the segment is usually hard contact, which is easy to produce local indentation or wear on the surface of the segment, while the contact between the flexible support and the segment is relatively soft, which can reduce damage to the surface of the segment and protect the structural integrity of the segment.

[0048] The telescopic adjustment mechanism 9 is used to drive the support frame 3 to perform telescopic adjustment, so as to push the support frame 3 to press and support the pipe segments in the tunnel of different sizes;

[0049] The angle adjustment mechanism 10 is used to drive the angle of the support frame 3 to adjust so that the support frame 3 can support the pipe segments at any angle in the tunnel. Through the angle adjustment mechanism, the tunnel pipe segments can be supported from multiple angles. Regardless of the damaged position of the pipe segments at the top, bottom, side or diagonal, effective supporting force can be provided, which greatly improves the versatility of the support and protection of the tunnel pipe segments.

[0050] like Figure 1 to Figure 12 The subway tunnel construction support and protection device shown in the figure, a specific embodiment is that the front and rear sides of the fixed frame 1 are respectively fixedly connected with a plurality of support leg assemblies 11 evenly distributed along the circumference thereof. In this embodiment, the support leg assemblies 11 are located at the front and rear ends of the fixed frame 1 and are arranged with four at each end. By supporting the tunnel segment with the support leg assemblies 11, the movable rod 2 of the device can be exactly in the center position of the tunnel, which is conducive to more stability when the support frame 3 supports the tunnel segment. The support leg assembly 11 includes a hydraulic telescopic rod 12, the hydraulic telescopic rod 12 is fixed on the fixed frame 1, the output end of the hydraulic telescopic rod 12 is fixedly connected with a fixed sleeve 13, the fixed sleeve 13 is coaxially fixedly connected with a support leg compression spring 14, and the fixed sleeve 13 is slidably connected with a support leg compression spring 14 that can be moved in the fixed sleeve 13. A sliding rod 15 slides in the sleeve 13, one end of the sliding rod 15 is fixedly connected to the support foot compression spring 14 and the other end is rotatably connected to a walking wheel 16 in contact with the tunnel segment. The walking wheel 16 is arranged to have a limiting function. After the hydraulic telescopic rod 12 is contracted and the limit is released, the walking wheel 16 can move in the tunnel. At this time, the device can be moved. After the walking wheel 16 is limited, as the hydraulic telescopic rod 12 is extended, the hydraulic telescopic rod 12 squeezes the sliding rod 15 through the support foot compression spring 14 and pushes the walking wheel 16 to press against the inner wall of the tunnel. At this time, as the hydraulic telescopic rod 12 on the fixed frame 1 moves simultaneously, multiple walking wheels 16 are pressed against the inner wall of the tunnel at the same time, so that the fixed frame 1 is located exactly at the center of the tunnel and is fixed.

[0051] like Figure 1 to Figure 12 The subway tunnel construction support and protection device shown in the figure is a specific embodiment in which the flexible pressure component 6 includes a pressure frame 17 and a flexible connector 18. The pressure frame 17 is fixed on the lifting component 5. The movement of the lifting component 5 drives the pressure frame 17 to move. One end of the flexible connector 18 is connected to the elastic pad 7, which can flexibly support the tunnel segment, reduce damage to the surface of the segment, and protect the structural integrity of the segment.

[0052] like Figure 1 to Figure 12The subway tunnel construction support and protection device shown in the figure has a specific embodiment as follows: a flexible connector 18 is slidably connected to a pressure frame 17; a plurality of flexible connectors 18 are provided and are sequentially connected to one end of the pressure frame 17 close to the tunnel segment; the flexible connector 18 comprises a slide bar 19, a slide seat 20 and a pressure spring 21; a pressure spring 21 is mounted on the slide bar 19; the other end of the pressure spring 21 is connected to the slide seat 20; a slide groove 22 is provided on the pressure frame 17; the slide seat 20 is slidably connected to the pressure frame 17 and can slide along the slide groove 22; one end of the slide bar 19 is hingedly connected to the elastic pad 7 and the other end passes through the slide seat 20 and extends out of the slide groove 22; when the elastic pad 7 contacts the tunnel segment, the pressure spring 21 is gradually compressed; when the elastic pad 7 is pressed against the tunnel segment, the elastic pad 7 is deformed; at this time, the elastic pad 7 can drive the slide seat 20 to slide.

[0053] like Figure 1 to Figure 12 The subway tunnel construction support and protection device shown in the figure is a specific embodiment in which the sliding seat 20 includes a threaded seat 23, the threaded seat 23 is slidably connected to the pressure frame 17, the threaded seat 23 slides along the slide groove 22 on the pressure frame 17, the slide rod 19 passes through the threaded seat 23 on its corresponding side, and a fine-tuning bolt 24 is threadedly connected to the threaded seat 23. The upper end of the fine-tuning bolt 24 contacts with the pressure spring 21 and the two can rotate relative to each other. By rotating the fine-tuning bolt 24, the fine-tuning bolt 24 can move up and down on the threaded seat 23, and then the pressure of the pressure spring 21 can be fine-tuned.

[0054] like Figure 1 to Figure 12 The subway tunnel construction support and protection device shown in the figure, in a specific embodiment, the lifting assembly 5 is detachably connected to the mobile frame 4, and is used to drive the flexible pressing assembly 6 to be lifted and lowered, including an arc-shaped connecting plate 25 that can be removed from the mobile frame 4, and a rotatable rotating screw 26 is rotatably connected to the arc-shaped connecting plate 25, and a tripod 27 is fixedly connected to the arc-shaped connecting plate 25, and movable blocks 28 are respectively slidably connected to the two sides of the tripod 27, and the two movable blocks 28 are relatively arranged on the two sides of the arc-shaped connecting plate 25 and can be moved along The tripod 27 moves up and down, and a connecting frame 29 is slidably connected in the middle of the two movable blocks 28. The connecting frame 29 is fixedly connected to the pressure frame 17. The two movable blocks 28 are slidably connected to the pressure frame 17. The rotating screw 26 is threadedly connected to the connecting frame 29. In this embodiment, the rotating screw 26 rotates to drive the connecting frame 29 to move up and down, and the connecting frame 29 drives the movable block 28 to move up and down along the tripod 27. At the same time, the connecting frame 29 drives the pressure frame 17 to move up and down, and at the same time, relative sliding occurs between the pressure frame 17 and the movable block 28.

[0055] like Figure 1 to Figure 12The subway tunnel construction support and protection device shown in the figure has a specific embodiment as follows: a limit plate 30 is fixedly connected to the mobile frame 4, and a plurality of limit holes 31 are provided on the limit plate 30 and are evenly distributed along its circumference. The limit bolts 32 are detachably connected in the limit holes 31, and a threaded hole 33 that can be threadedly matched with the limit bolts 32 is provided on the arc-shaped connecting plate 25. The limit bolts 32 are inserted into the limit holes 31 and threadedly connected with the threaded holes 33, so that the arc-shaped connecting plate 25 can be fixed, and one or more arc-shaped connecting plates 25 can be installed on the mobile frame 4, so that the installation of multiple support frames 3 can be realized, and by combining multiple support frames 3, it is possible to support multiple pipe segments in the same tunnel section, thereby improving the support range of the tunnel pipe segments.

[0056] like Figure 1 to Figure 12 The subway tunnel construction support and protection device shown in the figure, a specific embodiment is that the telescopic adjustment mechanism 9 includes a driving motor 34, the driving motor 34 is fixed on the mobile frame 4, the output end of the driving motor 34 is fixedly connected with a driving gear 35, the driving gear 35 is rotatably connected to the mobile frame 4, the mobile frame 4 is rotatably connected with a driven gear 36, a driving bevel gear 37 is coaxially fixed on the driven gear 36, the lower end of the rotating screw 26 is fixedly connected with a driven bevel gear 38, the arc connecting plate 25 is arc-shaped, and the driven bevel gear 38 is meshed with the driving bevel gear 37 when the arc connecting plate 25 is mounted on the mobile frame 4. When the driving motor 34 rotates, it drives the driving gear 35 to rotate, the driving gear 35 drives the driven gear 36 to rotate, the driven gear 36 drives the driving bevel gear 37 to rotate, the driving bevel gear 37 rotates and drives the driven bevel gear 38 to rotate, and the driven bevel gear 38 rotates and drives the rotating screw 26 to rotate.

[0057] like Figure 1 to Figure 12 The subway tunnel construction support and protection device shown in the figure has a specific embodiment as follows: the angle adjustment mechanism 10 includes a second motor 39, the second motor 39 is fixed on the fixed frame 1, the output end of the second motor 39 is fixedly connected with a rotating worm 40, the rotating worm 40 is rotatably connected to the fixed frame 1, the fixed frame 1 is rotatably connected with a rotating worm wheel 41 threadedly connected to the rotating worm 40, the rotating worm wheel 41 is fixedly connected to the movable rod 2, the second motor 39 rotates to drive the rotating worm 40 to rotate, the rotating worm 40 drives the rotating worm wheel 41 to rotate, the rotating worm wheel 41 drives the movable rod 2 to rotate, and the movable rod 2 rotates to drive the movable frame 4 to adjust the angle.

[0058] like Figure 1 to Figure 12The subway tunnel construction support and protection device shown in the figure has a specific embodiment as follows: a limiting mechanism 42 for limiting the angle of the movable frame 4 is arranged on the movable rod 2, and the limiting mechanism 42 includes a plurality of sockets 43 opened in the sleeve 8 and evenly distributed along the circumference of the sleeve 8, and a pin 44 which can be inserted into the socket 43 is slidably connected to the movable frame 4, and a limiting compression spring 45 is sleeved on the pin 44, and the limiting compression spring 45 is fixed on the movable frame 4. When the pin 44 is inserted into the socket 43, the angle of the movable frame 4 can be limited at this time, and when the pin 44 is pulled out of the socket 43, the movable frame 4 can rotate relative to the sleeve 8.

[0059] The working principle of the device has been explained through the above embodiments. The above embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A support and protection device for subway tunnel construction, comprising a fixed frame (1), characterized in that: The fixed frame (1) is erected in the middle of the tunnel, a movable rod (2) is arranged in the middle of the fixed frame (1), and further comprises: A plurality of support frames (3) capable of supporting tunnel segments, each of the support frames (3) being slidably arranged on a movable rod (2), the support frames (3) acting on the tunnel segments, the support frames (3) being capable of undergoing telescopic deformation according to the size of the tunnel segments so as to achieve a close fit with the tunnel segments, the support frames (3) comprising a moving frame (4), a lifting assembly (5), a flexible pressing assembly (6), and an elastic pad (7), a sleeve (8) being arranged on the inner side of the moving frame (4), the sleeve (8) being slidably arranged on the movable rod (2), the lifting assembly (5) being detachably arranged on the moving frame (4), a flexible pressing assembly (6) being arranged on the lifting assembly (5), and an elastic pad (7) being arranged on the flexible pressing assembly (6), and when the flexible pressing assembly (6) pushes the elastic pad (7) to contact the tunnel segments, the elastic pad (7) undergoes elastic deformation so as to be in close fit with the segments; A telescopic adjustment mechanism (9) is used to drive the support frame (3) to perform telescopic adjustment, so as to push the support frame (3) to press and support segments in tunnels of different sizes; An angle adjustment mechanism (10) is used to drive the angle of the support frame (3) to be adjusted so that the support frame (3) can support a pipe segment at any angle in the tunnel; The flexible pressing assembly (6) comprises a pressing frame (17) and a flexible connecting member (18); the pressing frame (17) is arranged on the lifting assembly (5); one end of the flexible connecting member (18) is connected to the elastic pad (7); The flexible connecting member (18) is slidably arranged on the pressure frame (17), and the flexible connecting member (18) comprises a sliding rod (19), a sliding seat (20), and a pressure spring (21). The sliding rod (19) is provided with a pressure spring (21), and the other end of the pressure spring (21) is connected to the sliding seat (20). The pressure frame (17) is provided with a sliding groove (22). The sliding seat (20) is slidably connected to the pressure frame (17) and can slide along the sliding groove (22). One end of the sliding rod (19) is hingedly connected to the elastic pad (7), and the other end passes through the sliding seat (20) and extends out of the sliding groove (22).

2. The subway tunnel construction support and protection device according to claim 1 is characterized in that: A plurality of foot assemblies (11) evenly distributed along the circumference of the fixed frame (1) are respectively arranged on the front and rear sides thereof, the foot assemblies (11) comprising a hydraulic telescopic rod (12), a fixing sleeve (13) being arranged at the output end of the hydraulic telescopic rod (12), a foot compression spring (14) being arranged in the fixing sleeve (13), a slidable sliding rod (15) being arranged in the fixing sleeve (13), one end of the sliding rod (15) being fixedly connected to the foot compression spring (14) and the other end of the sliding rod being arranged with a walking wheel (16) in contact with a tunnel segment.

3. The subway tunnel construction support and protection device according to claim 1 is characterized in that: The sliding seat (20) comprises a threaded seat (23) which is slidably connected to the pressure frame (17). A fine-tuning bolt (24) is threadedly connected to the threaded seat (23). The upper end of the fine-tuning bolt (24) contacts the pressure spring (21) and the two can rotate relative to each other.

4. The subway tunnel construction support and protection device according to claim 1 is characterized in that: The lifting assembly (5) is detachably connected to the movable frame (4) and is used to drive the flexible pressing assembly (6) to be lifted and lowered. The lifting assembly (5) comprises an arc-shaped connecting plate (25) detachable from the movable frame (4). A rotatable rotating screw (26) is arranged on the arc-shaped connecting plate (25). A tripod (27) is arranged on the arc-shaped connecting plate (25). Two sides of the tripod (27) are respectively provided with movable blocks (28). The two movable blocks (28) are relatively arranged on the two sides of the arc-shaped connecting plate (25) and can move up and down along the tripod (27). A connecting frame (29) is arranged between the two movable blocks (28). The connecting frame (29) is fixedly connected to the pressing frame (17). The two movable blocks (28) are slidably arranged on the pressing frame (17). The rotating screw (26) is threadedly connected to the connecting frame (29).

5. The subway tunnel construction support and protection device according to claim 4 is characterized in that: A limit plate (30) is provided on the movable frame (4), a plurality of limit holes (31) are provided on the limit plate (30), limit bolts (32) are detachably connected in the limit holes (31), and threaded holes (33) which can be threadedly matched with the limit bolts (32) are provided on the arc-shaped connecting plate (25).

6. The subway tunnel construction support and protection device according to claim 4 is characterized in that: The telescopic adjustment mechanism (9) comprises a driving motor (34), the driving motor (34) being arranged on the moving frame (4), a driving gear (35) being arranged at the output end of the driving motor (34), the driving gear (35) being rotatably connected to the moving frame (4), a driven gear (36) being arranged on the moving frame (4), a driving bevel gear (37) being coaxially arranged on the driven gear (36), a driven bevel gear (38) being arranged at the lower end of the rotating screw rod (26), and the driven bevel gear (38) being meshed with the driving bevel gear (37) when the arc-shaped connecting plate (25) is mounted on the moving frame (4).

7. The subway tunnel construction support and protection device according to claim 1 is characterized in that: The angle adjustment mechanism (10) comprises a second motor (39), an output end of the second motor (39) being provided with a rotating worm (40), the rotating worm (40) being rotatably connected to a fixed frame (1), the fixed frame (1) being provided with a rotating worm wheel (41) threadedly connected to the rotating worm (40), the rotating worm wheel (41) being fixedly connected to the movable rod (2).

8. The subway tunnel construction support and protection device according to claim 1, characterized in that: The movable rod (2) is provided with a limiting mechanism (42) capable of limiting the angle of the movable frame (4). The limiting mechanism (42) comprises a plurality of insertion holes (43) opened in the sleeve (8) and evenly distributed along the circumference of the sleeve (8). The movable frame (4) is provided with a plug (44) capable of being inserted into the plug hole (43). A limiting compression spring (45) is sleeved on the plug (44). The limiting compression spring (45) is fixed on the movable frame (4).

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