A subway shield construction protection device

Abstract

The utility model discloses a subway shield construction protection device relates to protection device technical field. The utility model discloses a chassis, including the center frame, and the both ends fixedly connected with slide bar of center frame, and the both ends swing sleeve of two slide rods are connected with slide frame respectively, the one end of two slide frames is opposite respectively and is detachably fixed with first bottom plate and second bottom plate, and a plurality of wall tiles are assembled between first bottom plate and second bottom plate, the upper end of first bottom plate is provided with first slot, and the upper end fixedly connected with first insert strip of second bottom plate, and the side of wall tile is provided with the second slot of first insert strip adaptation, and the other side fixedly connected with second insert strip of second slot and first slot adaptation of wall tile. The utility model discloses a wall tile's second insert strip and the cooperation of second slot of adjacent wall tile, first slot of first bottom plate and first insert strip of second bottom plate realize quick assembly, and the installation time of protection device in subway construction is shortened, and the safety of construction personnel is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of protective device technology, and in particular relates to a protective device for subway tunnel construction. Background Technology

[0002] Subway tunnel boring machine (TBM) construction is a mechanized construction method that uses a large underground engineering equipment, such as a TBM, which integrates functions such as excavation, support, and lining, to excavate tunnels underground. The TBM's shell forms a closed working space, which can effectively reduce the disturbance to ground traffic, buildings, and the surrounding environment. During construction, the protective device can quickly form the initial support of the tunnel to prevent the soil in front of the tunnel face from collapsing and ensure construction safety.

[0003] For example, Chinese patent CN221568479U discloses a protective device for subway tunnel boring machine construction, including a left protective plate. An upper mounting block is fixedly installed at the top of the left protective plate. A support rod is rotatably connected inside the upper mounting block. An upper limit block is rotatably connected to the surface of the support rod at the rear end of the upper mounting block. The top of the upper limit block is fixedly connected to the upper protective plate. A rotating plate is rotatably connected to the side end of the support rod at the rear of the upper limit block. A rotating screw is threaded to the side end of the rotating plate, and the support rod is fixedly connected to the rotating plate via the rotating screw. This device adds an adjustable angle and width mechanism to the protective device, facilitating installation and disassembly. It can be used in different working environments, improving work efficiency.

[0004] However, the aforementioned protective devices are mostly rigid flat plate structures, lacking flexible adjustment or curvature adaptive structures that can match the arc contour of the tunnel wall. Furthermore, the adjustment and fixing mainly rely on single-point locking of the rotating screw, resulting in scattered support points and limited overall connection strength. Therefore, after deployment, they are difficult to fit tightly against the tunnel wall and are prone to loosening under construction vibration or external force, resulting in insufficient stability.

[0005] To address these issues, we provide a protective device for subway tunnel boring machine (TBM) construction. Utility Model Content

[0006] The purpose of this utility model is to provide a protective device for subway tunnel construction, which achieves rapid splicing through the cooperation of the inserts and slots of the protective tiles, and improves the stability of the splicing through multiple reinforcement structures, thus solving the problems of time-consuming installation and insufficient splicing stability of existing subway tunnel construction protective devices.

[0007] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a protective device for subway shield tunneling construction, including a base frame and a central frame. Both ends of the central frame are fixedly connected to sliding rods, and both ends of the two sliding rods are movably sleeved with a sliding frame. The interior of the central frame is rotatably connected to two parallel bidirectional screws, and the interior of the sliding frame is fixedly connected to two fixing rods that are respectively threaded onto the outside of the threaded part of the corresponding bidirectional screw. Two carriages are detachably fixed to a first base plate and a second base plate at opposite ends. Multiple protective wall tiles are assembled between the first base plate and the second base plate, and the multiple protective wall tiles form an arc shape that fits the inner wall of the tunnel. The upper end of the first base plate is provided with a first slot, the upper end of the second base plate is fixedly connected with a first insert, one side of the wall tile is provided with a second slot that matches the first insert, and the other side of the wall tile is fixedly connected with a second insert that matches both the second slot and the first slot.

[0008] The present invention is further configured such that the inner sides of the first base plate and the second base plate are respectively provided with an upward-opening connecting slot and a mounting groove, and the inner middle of the wall tile is provided with a connecting slide groove that runs through both sides. The connecting slide groove is slidably connected with a connecting plug that matches the connecting slot, and the mounting groove is detachably fixed with a first plug that matches the connecting slide groove.

[0009] The present invention is further configured such that a third slot is provided at the front end of the wall-mounted tile, and a third insert block adapted to the third slot is fixedly connected to the rear end of the wall-mounted tile.

[0010] The present invention is further configured such that a first insertion hole is provided at the center of the connecting groove, and a second insertion hole is provided at the center of the connecting block. A pin is movably inserted into the interior of the second insertion hole, and the pin is movably inserted into the interior of the first insertion hole.

[0011] The present invention is further configured such that a connecting screw hole is provided inside the third slot, and a mounting hole is provided inside the third insert, and a connecting bolt adapted to the connecting screw hole is rotatably connected inside the mounting hole.

[0012] The present invention is further configured such that a central cover is fixedly connected inside the central frame, a drive rod is rotatably connected at the center of the central cover, a hexagonal insertion hole is opened at the top of the drive rod, a second driving bevel gear is fixedly connected at the bottom of the drive rod, a horizontal shaft is rotatably connected inside the central cover, a second driven bevel gear that meshes with the second driving bevel gear is fixedly connected to the outside of the horizontal shaft, a first driving bevel gear is fixedly connected to both ends of the horizontal shaft, and a first driven bevel gear that meshes with the corresponding first driving bevel gear is fixedly connected to the outside of the bidirectional screw.

[0013] The present invention is further configured such that a reinforcing seat is fixedly connected to the top of each of the two carriages, and the two reinforcing seats are respectively fixedly connected to the inner side of the first base plate and the second base plate.

[0014] This utility model has the following beneficial effects: 1. This utility model achieves rapid splicing by cooperating the second insert of the protective tile with the second slot of the adjacent protective tile, the first slot of the first base plate and the first insert of the second base plate. Combined with the reinforcement of the connecting block, the first insert and the pin, it prevents lateral displacement. This can not only shorten the installation time of the protective device in subway construction, but also ensure the stability of the support structure in the vibration environment and protect the safety of construction personnel.

[0015] 2. This utility model improves the splicing strength along the tunnel length direction by cooperating the third insert block and the third slot of the protective tile and reinforcing it with connecting bolts, forming a continuous protective whole. In the construction of long-distance subway tunnels, it can effectively prevent the risk of local collapse and ensure the stability of the tunnel structure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a structural diagram of the base frame, the first base plate, and the second base plate of this utility model.

[0019] Figure 3 This is a schematic diagram of the bottom structure of the base frame of this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of the wall-mounted tile of this utility model.

[0021] Figure 5 This is a schematic diagram showing the assembly state of multiple present inventions.

[0022] Figure 6 for Figure 2 A magnified structural diagram of point A in the middle.

[0023] Figure 7 for Figure 3 A magnified structural diagram at point B in the middle.

[0024] The attached diagram lists the components represented by each number as follows: 100. Base frame; 101. Center frame; 102. Slide rod; 103. Slide carriage; 104. Fixing rod; 105. Double-acting screw; 106. Center cover; 107. First driven bevel gear; 108. Horizontal shaft; 109. First driving bevel gear; 110. Drive rod; 111. Second driving bevel gear; 112. Second driven bevel gear; 200. First base plate; 201. First slot; 202. Connecting slot; 300. Second... Base plate; 301, first insert strip; 302, mounting groove; 303, first insert block; 400, wall tile; 401, second insert strip; 402, second slot; 403, connecting slide; 404, connecting insert block; 405, third slot; 406, third insert block; 407, mounting hole; 408, connecting bolt; 409, connecting screw hole; 410, first insertion hole; 411, second insertion hole; 412, pin; 500, reinforcing seat. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Example 1

[0026] Please see Figures 1 to 5 This utility model is a protective device for subway shield tunneling construction, including a base frame 100 and a central frame 101. Both ends of the central frame 101 are fixedly connected to sliding rods 102, and both ends of the two sliding rods 102 are movably sleeved with slide frames 103. The interior of the central frame 101 is rotatably connected to two parallel bidirectional screws 105. The interior of the slide frames 103 is fixedly connected to two fixing rods 104, which are respectively threaded onto the outside of the threaded part of the corresponding bidirectional screws 105. Through the threaded engagement between the bidirectional screws 105 and the fixing rods 104, the two slide frames 103 can be driven to slide synchronously in opposite directions along the sliding rods 102, thereby adjusting the distance between the first base plate 200 and the second base plate 300 to adapt to the construction needs of tunnels with different diameters. Two slides 103 are detachably fixed to a first base plate 200 and a second base plate 300 at opposite ends. Multiple protective wall tiles 400 are assembled between the first base plate 200 and the second base plate 300, and the multiple protective wall tiles 400 form an arc shape that fits the inner wall of the tunnel. The upper end of the first base plate 200 is provided with a first slot 201, and the upper end of the second base plate 300 is fixedly connected with a first insert 301. One side of the protective tile 400 is provided with a second slot 402 that matches the first insert 301, and the other side of the protective tile 400 is fixedly connected with a second insert 401 that matches the second slot 402 and the first slot 201. The protective tile 400 can be quickly spliced ​​by the cooperation of the second insert 401 with the second slot 402, the first slot 201 and the first insert 301, and after splicing, it forms an arc-shaped structure that fits the inner wall of the tunnel, which improves the stability of the protection.

[0027] Specifically, each of the two carriages 103 is fixedly connected to a reinforcing seat 500 at its top, and the two reinforcing seats 500 are fixedly connected to the inner side of the first base plate 200 and the second base plate 300 respectively. The reinforcing seats 500 can enhance the connection strength between the first base plate 200, the second base plate 300 and the carriage 103, and prevent deformation under stress.

[0028] The operation process of this embodiment is as follows: When it is necessary to support the tunnel, firstly, insert the second insert 401 on one side of the retaining wall tile 400 into the second slot 402 of the adjacent retaining wall tile 400, and at the same time, make the second insert 401 of the edge retaining wall tile 400 cooperate with the first slot 201 of the first base plate 200, and the other side connect with the first insert 301 of the second base plate 300. Through the tight cooperation between the insert and the slot, a quick splicing is achieved and an arc-shaped structure that fits the inner wall of the tunnel is formed, thereby improving the protective stability. Example 2

[0029] Please see Figure 1 , Figure 4 and Figure 5 Based on the first specific embodiment, the inner sides of the first base plate 200 and the second base plate 300 are respectively provided with an upward-opening connecting slot 202 and a mounting groove 302. The inner middle of the wall tile 400 is provided with a connecting slide groove 403 that runs through both sides. The connecting slide groove 403 is slidably connected to a connecting plug 404 that is compatible with the connecting slot 202. The mounting groove 302 is detachably fixed to a first plug 303 that is compatible with the connecting slide groove 403. The connecting plug 404 is slidably connected in the connecting slide groove 403 and cooperates with the connecting slot 202. The cooperation between the first plug 303 and the connecting slide groove 403 can further strengthen the connection between the wall tile 400 and the first base plate 200 and the second base plate 300 from the inside, preventing the wall tile 400 from shifting laterally during construction vibration.

[0030] Specifically, a first insertion hole 410 is provided at the center of the connecting slide 403, and a second insertion hole 411 is provided at the center of the connecting plug 404. A pin 412 is movably inserted into the second insertion hole 411, and the pin 412 is movably inserted into the first insertion hole 410. The pin 412 passes through the second insertion hole 411 and the first insertion hole 410, which can lock the position of the connecting plug 404 and prevent it from slipping out of the connecting slide 403, making installation more convenient.

[0031] The operation process of this embodiment is as follows: After the initial splicing of the wall tiles 400 is completed, the pin 412 is pulled out. Then, the inner connecting block 404 of the wall tile 400 closest to the first base plate 200 is inserted into the connecting slot 202. After that, the connecting blocks 404 are inserted into the adjacent connecting grooves 403 in sequence. Finally, the first block 303 is installed into the placement groove 302 and abuts against the adjacent connecting block 404. This can limit the lateral movement of multiple wall tiles 400, prevent the wall tiles 400 from shifting laterally during construction vibration, and improve the stability of the overall connection. Example 3

[0032] Please see Figure 4 and Figure 5 Based on specific embodiment one and specific embodiment two, the front end of the wall tile 400 is provided with a third slot 405, and the rear end of the wall tile 400 is fixedly connected with a third insert 406 that is adapted to the third slot 405.

[0033] Specifically, the third slot 405 has a connecting screw hole 409 inside, the third insert 406 has a mounting hole 407 inside, and a connecting bolt 408 that matches the connecting screw hole 409 is rotatably connected inside the mounting hole 407.

[0034] The operation process of this embodiment is as follows: adjacent retaining wall tiles 400 are spliced ​​together front and back by the cooperation of the third insert 406 and the third slot 405, and the connecting bolt 408 is threadedly connected to the connecting screw hole 409 to enhance the splicing strength along the tunnel length direction and ensure that multiple retaining wall tiles 400 form a continuous protective whole. Example 4

[0035] Please see Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7Based on specific embodiments one to three, a central cover 106 is fixedly connected inside the central frame 101. A drive rod 110 is rotatably connected to the center of the central cover 106. A hexagonal insertion hole is opened at the top of the drive rod 110. A second driving bevel gear 111 is fixedly connected to the bottom of the drive rod 110. A horizontal shaft 108 is rotatably connected inside the central cover 106. A second driven bevel gear 112 that meshes with the second driving bevel gear 111 is fixedly connected to the outside of the horizontal shaft 108. A first driving bevel gear 109 is fixedly connected to both ends of the horizontal shaft 108. A first driven bevel gear 107 that meshes with the corresponding first driving bevel gear 109 is fixedly connected to the outside of the bidirectional screw 105.

[0036] The operation process of this embodiment is as follows: When it is necessary to adjust the distance between the first base plate 200 and the second base plate 300 according to the tunnel diameter, the operator can insert a hexagonal wrench into the hexagonal socket at the top of the drive rod 110, and rotate the drive rod 110 by turning the wrench. When the drive rod 110 rotates, the second driving bevel gear 111 at its bottom rotates synchronously. Since the second driving bevel gear 111 meshes with the second driven bevel gear 112 on the horizontal shaft 108, the driving force can be efficiently transmitted to the horizontal shaft 108, so that the horizontal shaft 108 is stable within the center cover 106. During the rotation of the horizontal shaft 108, the first active bevel gears 109 at both ends rotate accordingly, which in turn drives the first driven bevel gear 107 meshing with it to rotate, ultimately driving the two bidirectional screws 105 to rotate synchronously within the central frame 101. When the bidirectional screws 105 rotate, the slide 103 slides synchronously in opposite directions along the slide bar 102 through the threaded engagement of the fixed rod 104 with the bidirectional screws 105, thereby adjusting the distance between the first base plate 200 and the second base plate 300 to adapt to the construction needs of tunnels with different diameters and improve the utilization rate of the base frame 100.

[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it.

Claims

1. A protective device for subway tunnel boring machine construction, characterized in that: include, The base frame (100) includes a central frame (101), both ends of which are fixedly connected to slide rods (102). Both ends of the two slide rods (102) are movably sleeved with slides (103). The interior of the central frame (101) is rotatably connected to two parallel bidirectional screws (105). The interior of the slides (103) is fixedly connected to two fixing rods (104) that are respectively threaded onto the outside of the threaded portion of the corresponding bidirectional screws (105). The two slides (103) are respectively detachably fixed to a first base plate (200) and a second base plate (300) at opposite ends. Multiple protective wall tiles (400) are assembled between the first base plate (200) and the second base plate (300), and the multiple protective wall tiles (400) form an arc shape that fits the inner wall of the tunnel. The first base plate (200) has a first slot (201) at its upper end, and the second base plate (300) has a first insert (301) fixedly connected to its upper end. The wall tile (400) has a second slot (402) on one side that is compatible with the first insert (301), and the wall tile (400) has a second insert (401) fixedly connected to the other side that is compatible with the second slot (402) and the first slot (201).

2. The protective device for subway tunnel boring machine construction according to claim 1, characterized in that, The inner sides of the first base plate (200) and the second base plate (300) are respectively provided with an upward-opening connecting slot (202) and a mounting groove (302). The inner middle of the wall tile (400) is provided with a connecting slide groove (403) that runs through both sides. The connecting slide groove (403) is slidably connected with a connecting plug (404) that matches the connecting slot (202). The mounting groove (302) is detachably fixed with a first plug (303) that matches the connecting slide groove (403).

3. The protective device for subway tunnel boring machine construction according to claim 1, characterized in that, The front end of the wall-mounted tile (400) is provided with a third slot (405), and the rear end of the wall-mounted tile (400) is fixedly connected with a third insert (406) that is compatible with the third slot (405).

4. A protective device for subway tunnel boring machine construction according to claim 2, characterized in that, The connecting groove (403) has a first insertion hole (410) at its center, and the connecting block (404) has a second insertion hole (411) at its center. A pin (412) is movably inserted into the second insertion hole (411), and the pin (412) is movably inserted into the first insertion hole (410).

5. A protective device for subway tunnel boring machine construction according to claim 3, characterized in that, The third slot (405) has a connecting screw hole (409) inside, and the third insert (406) has a mounting hole (407) inside. A connecting bolt (408) that matches the connecting screw hole (409) is rotatably connected inside the mounting hole (407).

6. A protective device for subway tunnel boring machine construction according to claim 1, characterized in that, A center cover (106) is fixedly connected inside the center frame (101). A drive rod (110) is rotatably connected at the center of the center cover (106). A hexagonal insertion hole is provided at the top of the drive rod (110). A second driving bevel gear (111) is fixedly connected at the bottom of the drive rod (110). A horizontal shaft (108) is rotatably connected inside the center cover (106). A second driven bevel gear (112) that meshes with the second driving bevel gear (111) is fixedly connected to the outside of the horizontal shaft (108). A first driving bevel gear (109) is fixedly connected to both ends of the horizontal shaft (108). A first driven bevel gear (107) that meshes with the corresponding first driving bevel gear (109) is fixedly connected to the outside of the bidirectional screw (105).

7. A protective device for subway tunnel boring machine construction according to claim 1, characterized in that, The top of each of the two carriages (103) is fixedly connected to a reinforcing seat (500), and the two reinforcing seats (500) are fixedly connected to the inner side of the first base plate (200) and the second base plate (300), respectively.

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