A segment support device for subway shield tunnel construction

Abstract

The utility model discloses a metro shield tunnel construction is with segment support device, the utility model relates to the technical field of metro tunnel construction, it is connected with the connecting block in the top fixed connection of support frame, the outer wall of connecting block is connected with the side lock catch of symmetry sliding, the top rotary connection of connecting block has the connecting cylinder, the top sliding connection of connecting cylinder has the upper lock catch, the outside of connecting block is provided with the side support spare of symmetry, the utility model discloses the sliding fit of the insertion rod of side support spare, sliding rod can realize side support length coarse adjustment, and the thread transmission of adjusting screw rod can complete contact point fine adjustment, the sliding fit of the top rod in upper support spare, upper support rod can adjust top support height, and support screw rod can accurately control upper contact block position, and this coarse adjustment and fine adjustment double -adjusting structure make the device can adapt to different specifications of metro shield tunnel.

Description

Technical Field

[0001] This utility model relates to the field of subway tunnel construction technology, specifically to a segment support device for subway shield tunnel construction. Background Technology

[0002] In subway construction, the shield tunneling method has become the mainstream technology for urban subway tunnel construction due to its advantages such as high construction efficiency and minimal impact on the ground environment. As the permanent lining structure of the tunnel, the tunnel segments need to be temporarily fixed by support devices during the assembly process to resist the pressure of the surrounding rock of the tunnel, the self-weight of the segments, and external interference during construction, so as to avoid problems such as displacement, deformation, or excessive gaps in the segments.

[0003] However, in the existing technology, traditional segment support devices are mostly customized or fixed-specification structures, lacking flexible adjustment mechanisms. Some devices can only be designed to support length and height for tunnels of a single diameter. If the construction scenario is changed, new support devices need to be reprocessed or purchased, which not only increases the cost of construction equipment and inventory pressure, but also prolongs the construction preparation cycle. Utility Model Content

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this utility model is as follows: a segment support device for subway shield tunnel construction, comprising: a support frame, a connecting block fixedly connected to the top of the support frame, side locks symmetrically slidably connected to the outer wall of the connecting block, a connecting cylinder rotatably connected to the top of the connecting block, an upper lock slidably connected to the top of the connecting cylinder, side support members symmetrically arranged on the outside of the connecting block, and an upper support member arranged at the top of the connecting block; the side support member includes an insert rod, a sliding rod slidably connected to the inner wall of the insert rod, an adjusting screw threadedly connected to the inner wall of the sliding rod, a side contact block fixedly connected to the end of the adjusting screw away from the sliding rod, and a positioning pin slidably connected to the inner wall of the insert rod. Push the sliding rod to slide on the inner wall of the insert rod to change the overall length of the side support. When the length is close to the side of the tube segment, insert the positioning pin. The positioning pin passes through the corresponding pin hole of the insert rod and the sliding rod at the same time to lock the relative position of the sliding rod and the insert rod, thus completing the coarse length adjustment. Rotate the adjusting screw. Since the end of the adjusting screw away from the sliding rod is fixedly connected to the side contact block, the threaded drive will drive the side contact block to move along the screw axis until the side contact block is tightly attached to the side surface of the tube segment, ensuring that the lateral support force is evenly transmitted.

[0005] Preferably, the outer wall of the insertion rod is slidably connected to the inner wall of the connecting block, the inner wall of the side lock is slidably connected to the outer wall of the insertion rod, and the outer wall of the positioning pin is slidably connected to the inner wall of the sliding rod. The insertion rod of the side support is inserted into the slot of the connecting block, and the connection between the insertion rod and the connecting block is completed by the side lock.

[0006] Preferably, the upper support member includes a top rod, an upper support rod slidably connected to the inner wall of the top rod, a support screw threadedly connected to the inner wall of the upper support rod away from the top rod, an upper contact block fixedly connected to the outer wall of the support screw, and a limit rod slidably connected to the inner wall of the top rod. The top rod of the upper support member is inserted into the inner wall of the connecting cylinder, so that the top rod and the connecting cylinder form a sliding fit, and then the top rod and the connecting cylinder are fixed by the upper locking hole, completing the initial positioning of the top support.

[0007] Preferably, the outer wall of the top rod is slidably connected to the inner wall of the connecting cylinder, and the inner wall of the upper locking buckle is slidably connected to the outer wall of the top rod. Pushing the upper support rod to slide on the inner wall of the top rod changes the overall height of the upper support member. When adjusted to be close to the top of the segment, inserting the limiting rod, which passes through the corresponding holes of the top rod and the upper support rod, locks their relative positions, completing the coarse height adjustment. Rotating the support screw causes the upper contact block fixed to the outer wall of the screw to move up and down until the upper contact block tightly adheres to the top surface of the segment.

[0008] Preferably, the outer wall of the top rod is symmetrically rotatably connected to a pull rod, the inner wall of the pull rod is threadedly connected to a pulling screw, the end of the pulling screw away from the pull rod is rotatably connected to a limiting cylinder, and the inner wall of the limiting cylinder is slidably connected to a fixing pin.

[0009] Preferably, the inner wall of the limiting cylinder is slidably connected to the outer wall of the insertion rod, and the outer wall of the fixing pin is slidably connected to the inner wall of the insertion rod.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. This utility model achieves coarse adjustment of the side support length by setting the sliding cooperation of the insert rod and sliding rod of the side support member, and the threaded transmission of the adjusting screw can complete the fine adjustment of the contact point; the sliding cooperation of the top rod and the upper support rod in the upper support member can adjust the height of the top support, and the support screw can accurately control the position of the upper contact block. This dual adjustment structure of coarse and fine adjustment makes the device adaptable to subway shield tunnels of different specifications.

[0012] 2. This utility model sets up a side support and an upper support simultaneously by setting up a device to form a side and upper coordinated support system. It can distribute the loads such as the self-weight of the tunnel segment and the pressure of the surrounding rock of the tunnel to multiple support points, avoiding the problem of local stress concentration caused by traditional single-direction support. The side lock locks the plug rod and the connecting block, and the upper lock locks the top rod and the connecting cylinder. The overall structure is easy to install and disassemble, and convenient to use. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a structural schematic diagram of the support frame of this utility model;

[0015] Figure 3 This is a structural schematic diagram of the side support component of this utility model;

[0016] Figure 4 This is a structural schematic diagram of the upper support component of this utility model.

[0017] In the diagram: 1. Support frame; 2. Connecting block; 3. Side support; 31. Insert rod; 32. Sliding rod; 33. Adjusting screw; 34. Side contact block; 35. Positioning pin; 4. Upper support; 41. Top rod; 42. Upper support rod; 43. Support screw; 44. Upper contact block; 45. Limiting rod; 46. Pull rod; 47. Pulling screw; 48. Limiting cylinder; 49. Fixing pin; 5. Side lock; 6. Connecting cylinder; 7. Upper lock. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0019] Example:

[0020] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a segment support device for subway shield tunnel construction, comprising: a support frame 1, a connecting block 2 fixedly connected to the top of the support frame 1, a side lock 5 symmetrically slidably connected to the outer wall of the connecting block 2, a connecting cylinder 6 rotatably connected to the top of the connecting block 2, an upper lock 7 slidably connected to the top of the connecting cylinder 6, side support members 3 symmetrically arranged on the outside of the connecting block 2, and an upper support member 4 arranged at the top of the connecting block 2; the side support member 3 includes an insert rod 31, a sliding rod 32 slidably connected to the inner wall of the insert rod 31, an adjusting screw 33 threadedly connected to the inner wall of the sliding rod 32, a side contact block 34 fixedly connected to the end of the adjusting screw 33 away from the sliding rod 32, and a positioning pin 35 slidably connected to the inner wall of the insert rod 31.

[0021] The outer wall of the insertion rod 31 is slidably connected to the inner wall of the connecting block 2, the inner wall of the side lock 5 is slidably connected to the outer wall of the insertion rod 31, and the outer wall of the positioning pin 35 is slidably connected to the inner wall of the sliding rod 32.

[0022] The upper support member 4 includes a top rod 41, an upper support rod 42 is slidably connected to the inner wall of the top rod 41, a support screw 43 is threadedly connected to the inner wall of the upper support rod 42 away from the top rod 41, an upper contact block 44 is fixedly connected to the outer wall of the support screw 43, and a limit rod 45 is slidably connected to the inner wall of the top rod 41.

[0023] The outer wall of the push rod 41 is slidably connected to the inner wall of the connecting cylinder 6, and the inner wall of the upper locking buckle 7 is slidably connected to the outer wall of the push rod 41.

[0024] A pull rod 46 is symmetrically rotatably connected to the outer wall of the top rod 41. A pulling screw 47 is threadedly connected to the inner wall of the pull rod 46. A limit cylinder 48 is rotatably connected to the end of the pulling screw 47 away from the pull rod 46. A fixing pin 49 is slidably connected to the inner wall of the limit cylinder 48.

[0025] The inner wall of the limiting cylinder 48 is slidably connected to the outer wall of the insertion rod 31, and the outer wall of the fixing pin 49 is slidably connected to the inner wall of the insertion rod 31.

[0026] Working principle:

[0027] In use, the device uses the support frame 1 as the bottom load-bearing foundation, and builds the core connection structure through the connecting block 2 at its top to complete the initial assembly of each support component. The insertion rod 31 of the side support 3 is inserted into the slot of the connecting block 2, and the insertion rod 31 and the connecting block 2 are connected by the side lock 5, so that the insertion rod 31 and the connecting block 2 form a sliding fit, reserving space for subsequent adjustment of the side support angle and position. First, the connecting cylinder 6 at the top of the connecting block 2 is rotated to match the support requirements of the top of the tube segment. Then, the top rod 41 of the upper support is inserted into the inner wall of the connecting cylinder 6, so that the top rod 41 and the connecting cylinder 6 form a sliding fit. Then, the top rod 41 and the connecting cylinder 6 are fixed by the upper lock 7, completing the initial positioning of the top support. One end of the pull rod 46 symmetrically arranged on the outer wall of the top rod 41 is rotatably connected to the top rod, and the limiting cylinder 48 at the other end is fitted into the outer wall of the insertion rod 31 of the side support, so that the pull rod 46 connects the upper support and the side support, initially forming a side and top linkage support frame to avoid the shaking of a single component.

[0028] Push the sliding rod 32 to slide on the inner wall of the insert rod 31 to change the overall length of the side support. When the length is close to the side of the tube segment, insert the positioning pin 35. The positioning pin 35 passes through the corresponding pin holes of the insert rod 31 and the sliding rod 32 to lock the relative position of the sliding rod and the insert rod, thus completing the coarse length adjustment. Rotate the adjusting screw 33. Since the end of the adjusting screw away from the sliding rod is fixedly connected to the side contact block 34, the threaded transmission will drive the side contact block 34 to move along the screw axis until the side contact block 34 is tightly attached to the side surface of the tube segment, ensuring that the lateral support force is evenly transmitted.

[0029] Push the upper support rod 42 to slide on the inner wall of the top rod 41 to change the overall height of the upper support. When it is adjusted to be close to the top of the tube segment, insert the limiting rod 45. The limiting rod passes through the corresponding hole of the top rod 41 and the upper support rod 42 to lock the relative position of the two and complete the coarse height adjustment. Rotate the support screw 43 to drive the upper contact block 44 fixed on the outer wall of the screw to move up and down until the upper contact block 44 is tightly attached to the top surface of the tube segment to avoid the support point being suspended or unevenly stressed. Rotate the pulling screw 47 on the inner wall of the pull rod 46. Since the other end of the pulling screw is rotatably connected to the limiting cylinder 48, the threaded transmission will adjust the overall length of the pull rod, thereby finely adjusting the relative angle between the upper support and the side support, so that the side and upper support frames fit the arc or planar structure of the tube segment better and improve the overall stability.

[0030] After all locking is completed, the device enters the formal support state: the pressure generated by the tunnel segment on the support device, such as the weight of the tunnel segment and the pressure of the surrounding rock of the tunnel, is transmitted through the side contact block 34 and the upper contact block 44 to the adjusting screw 33 and the support screw 43, and then sequentially to the sliding rod 32, the insertion rod 31 side support path and the upper support rod 42, the top rod 41 upper support path, and finally to the support frame 1 through the connecting block 2. The support frame then evenly transmits the pressure to the bottom foundation or construction platform of the tunnel, thereby achieving stable support for the tunnel segment and preventing the tunnel segment from deforming or displacing.

[0031] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A segment support device for subway shield tunnel construction, characterized in that, include: A support frame (1) is fixedly connected to a connecting block (2) at its top end. A side lock (5) is symmetrically slidably connected to the outer wall of the connecting block (2). A connecting cylinder (6) is rotatably connected to the top end of the connecting block (2). An upper lock (7) is slidably connected to the top end of the connecting cylinder (6). Side support members (3) are symmetrically arranged on the outside of the connecting block (2). An upper support member (4) is arranged on the top end of the connecting block (2). The side support (3) includes a plug rod (31), a sliding rod (32) is slidably connected to the inner wall of the plug rod (31), an adjusting screw (33) is threadedly connected to the inner wall of the sliding rod (32), a side contact block (34) is fixedly connected to the end of the adjusting screw (33) away from the sliding rod (32), and a positioning pin (35) is slidably connected to the inner wall of the plug rod (31).

2. The segment support device for subway shield tunnel construction according to claim 1, characterized in that: The outer wall of the insertion rod (31) is slidably connected to the inner wall of the connecting block (2), the inner wall of the side lock (5) is slidably connected to the outer wall of the insertion rod (31), and the outer wall of the positioning pin (35) is slidably connected to the inner wall of the sliding rod (32).

3. The segment support device for subway shield tunnel construction according to claim 1, characterized in that: The upper support member (4) includes a top rod (41), an upper support rod (42) is slidably connected to the inner wall of the top rod (41), a support screw (43) is threadedly connected to the inner wall of the upper support rod (42) away from the top rod (41), an upper contact block (44) is fixedly connected to the outer wall of the support screw (43), and a limit rod (45) is slidably connected to the inner wall of the top rod (41).

4. A segment support device for subway shield tunnel construction according to claim 3, characterized in that: The outer wall of the top rod (41) is slidably connected to the inner wall of the connecting cylinder (6), and the inner wall of the upper locking buckle (7) is slidably connected to the outer wall of the top rod (41).

5. A segment support device for subway shield tunnel construction according to claim 3, characterized in that: The outer wall of the top rod (41) is symmetrically rotatably connected to a pull rod (46), and the inner wall of the pull rod (46) is threadedly connected to a pulling screw (47). The end of the pulling screw (47) away from the pull rod (46) is rotatably connected to a limiting cylinder (48), and the inner wall of the limiting cylinder (48) is slidably connected to a fixing pin (49).

6. A segment support device for subway shield tunnel construction according to claim 5, characterized in that: The inner wall of the limiting cylinder (48) is slidably connected to the outer wall of the insertion rod (31), and the outer wall of the fixing pin (49) is slidably connected to the inner wall of the insertion rod (31).

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