Supporting device for tunnel construction

Abstract

The invention is applicable to the technical field of tunnel construction, and provides a supporting device for tunnel construction, which comprises a bottom frame and a movable rod, a synchronous supporting mechanism is arranged at the top end of the movable rod and is abutted against a tunnel during working, and a locking module is mounted on the synchronous supporting mechanism and is used for fixing under the condition of supporting by the synchronous supporting mechanism. The directional driving mechanism is connected with the movable rod, the directional driving mechanism pushes the movable rod and the synchronous supporting mechanism to slide in the height direction of the bottom frame under the working condition, the elastic locking mechanisms are symmetrically arranged on the outer side of the directional driving mechanism, and when the free ends of the elastic locking mechanisms are embedded into the movable rod, the movable rod is supported; the movable rod and the synchronous supporting mechanism are prevented from falling during supporting; the supporting device can adapt to tunnels of various specifications and sizes, structure looseness is not prone to occurring in the supporting process, stable supporting can be conducted, falling is not prone to occurring when the height is adjusted, and the phenomenon of overall stress crushing can be effectively restrained.

Description

Technical Field

[0001] The present invention belongs to the technical field of tunnel construction, and particularly relates to a support device for tunnel construction. Background Art

[0002] A tunnel is an engineering structure buried in the stratum and is a form of human utilization of underground space. Tunnels can be divided into traffic tunnels, hydraulic tunnels, municipal tunnels, mine tunnels, and military tunnels. When people construct tunnels, a support device is needed to reinforce and support the tunnels.

[0003] The currently used support devices usually consist of a base, a jack, a support rod, a top plate, a guide post, and a guide sleeve. During support, the top plate contacts the inner wall of the tunnel, and the jack adjusts the height of the top plate. When the internal size of the tunnel changes, the top plate cannot fit the inner wall, resulting in a small contact area and large stress, making it difficult to provide effective support. During the support process, the structure is prone to looseness and collapse, and the assembly before and after support is relatively inconvenient. Summary of the Invention

[0004] The purpose of the embodiments of the present invention is to provide a support device for tunnel construction, aiming to solve the problems existing in the above background art.

[0005] The embodiments of the present invention are implemented as follows. It includes a bottom frame, and further includes: A movable rod, which is slidably installed on the bottom frame; A synchronous support mechanism, which is arranged at the top end of the movable rod and abuts against the inner wall of the tunnel when working; A locking module, which is installed on the synchronous support mechanism and is used to fix the position of the synchronous support mechanism when the synchronous support mechanism is in support; A support cross plate, which is fixedly installed inside the bottom frame. A C-shaped rod is installed on the support cross plate, and a directional driving mechanism is arranged on the C-shaped rod. The directional driving mechanism is connected to the movable rod, and when working, the directional driving mechanism pushes the movable rod and the synchronous support mechanism to slide along the bottom frame in the height direction; An elastic locking mechanism, which is symmetrically arranged outside the directional driving mechanism. When the free end of the elastic locking mechanism is embedded in the movable rod, it supports the movable rod to prevent the movable rod and the synchronous support mechanism from falling during support.

[0006] Preferably, the synchronous support mechanism includes a fixed support rod, a first arc-shaped support rod, a second arc-shaped support rod, a first limiting rod, a connecting rod, a first elastic support member, and a first limiting block; The fixed support rod is fixedly installed on the upper surface of the movable rod. The first limiting rod is slidably installed on the fixed support rod, and a first limiting block is installed inside the first limiting rod. An arc-shaped support rod one and an arc-shaped support rod two are installed on the outer side of the first limiting rod, and the adjacent arc-shaped support rod one and arc-shaped support rod two are connected by a connecting rod. An elastic support member one is arranged inside the arc-shaped support rod one and the arc-shaped support rod two, and the end of the elastic support member one is connected with the connecting rod.

[0007] Preferably, the locking module includes a limiting hole, a V-shaped rod and a plugging rod. The limiting hole is arranged on the fixed support rod and the first limiting rod, and the plugging rod is slidably installed on the limiting hole. The V-shaped rod is fixedly installed at the end of the plugging rod, so as to lock the first limiting rod when the plugging rod is inserted into the limiting hole.

[0008] Preferably, the directional driving mechanism includes a driving gear, a straight tooth part, a second limiting rod and a second limiting block. The driving gears are arranged in pairs at the top of the C-shaped rod, and the adjacent driving gears are meshed. The straight tooth part is arranged inside the movable rod, and the straight tooth part is meshed with the driving gear. The second limiting rods are symmetrically installed on the outer side of the movable rod. The second limiting rods are slidably connected with the bottom frame, and a second limiting block is installed at the bottom end of the second limiting rods.

[0009] Preferably, the driving gear is in transmission connection with an external motor through a coupling, so as to drive the driving gear, the straight tooth part, the movable rod and the synchronous support mechanism to move in the height direction under the drive of the motor.

[0010] Preferably, the elastic locking mechanism includes a shifting rod, a slot and an elastic support member two. The bottom end of the shifting rod is hinged on the support cross plate, and the slots are arranged at equal intervals along the outer side of the movable rod. The elastic support member two is arranged between the support cross plate and the shifting rod, and the elastic support member two undergoes elastic deformation when the movable rod moves upward.

[0011] Preferably, the elastic locking mechanism further includes a positioning cross bar, a positioning column and a guiding groove. The positioning cross bar is hinged on the outer side of the C-shaped rod, and the positioning column is installed at the free end of the positioning cross bar. The guiding groove is arranged on the side surface of the shifting rod. The guiding groove is slidably connected with the positioning column, and when the positioning cross bar is toggled, the shifting rod is pushed to swing along the support cross plate, so as to release the locking of the movable rod.

[0012] A support device for tunnel construction provided by an embodiment of the present invention has the characteristics of convenient movement, convenient disassembly and storage, wide support range and stable structure. It can adapt to tunnel sizes of various specifications, and it is not easy to loosen the structure during the support process, and can provide stable support. In addition, during the process of adjusting the support height, it is not easy to fall, which can effectively inhibit the occurrence of overall force crushing. It can also be quickly assembled before and after use, improving the assembly efficiency while saving transportation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of a support device for tunnel construction provided by an embodiment of the present invention; Figure 2 is Figure 1 a partial enlarged view of part A in Figure 3 is Figure 1 a partial enlarged view of part B in Figure 4 is Figure 1 a partial enlarged view of part C in Figure 5 is Figure 1 a partial enlarged view of part D in

[0014] In the drawings: 1 - bottom frame; 2 - movable rod; 3 - fixed support rod; 4 - first arc-shaped support rod; 5 - second arc-shaped support rod; 6 - first limiting rod; 7 - connecting rod; 8 - first elastic support member; 9 - limiting hole; 10 - V-shaped rod; 11 - plugging rod; 12 - first limiting block; 13 - support cross plate; 14 - C-shaped rod; 15 - driving gear; 16 - straight tooth part; 17 - second limiting rod; 18 - second limiting block; 19 - through hole; 20 - dial rod; 21 - slot; 22 - second elastic support member; 23 - positioning cross bar; 24 - positioning column; 25 - guiding groove; 100 - synchronous support mechanism; 200 - directional driving mechanism; 300 - elastic locking mechanism. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0016] The following describes the specific implementation of the present invention in detail with reference to specific embodiments.

[0017] As Figure 1-Figure 5As shown in the figure, it is a structural diagram of a support device for tunnel construction provided by an embodiment of the present invention, including a bottom frame 1, a movable rod 2, a synchronous support mechanism 100, a locking module, a support cross plate 13, and an elastic locking mechanism 300. The movable rod 2 is slidably installed on the bottom frame 1; the synchronous support mechanism 100 is arranged at the top of the movable rod 2, and the synchronous support mechanism 100 abuts against the inner wall of the tunnel during operation; the locking module is installed on the synchronous support mechanism 100 and is used to fix the position of the synchronous support mechanism 100 when the synchronous support mechanism 100 is supporting; the support cross plate 13 is fixedly installed inside the bottom frame 1, a C-shaped rod 14 is installed on the support cross plate 13, a directional driving mechanism 200 is arranged on the C-shaped rod 14, the directional driving mechanism 200 is connected to the movable rod 2, and the directional driving mechanism 200 pushes the movable rod 2 and the synchronous support mechanism 100 to slide along the bottom frame 1 in the height direction during operation; the elastic locking mechanisms 300 are symmetrically arranged outside the directional driving mechanism 200. When the free ends of the elastic locking mechanisms 300 are embedded in the movable rod 2, they support the movable rod 2 to prevent the movable rod 2 and the synchronous support mechanism 100 from falling during support.

[0018] A support device for tunnel construction provided by the present application has the characteristics of convenient movement, convenient disassembly and storage, wide support range, and stable structure. It can adapt to tunnel sizes of various specifications, and it is not easy to loosen the structure during the support process, and can provide stable support. In addition, during the process of adjusting the support height, it is not easy to fall, which can effectively inhibit the phenomenon of overall force crushing. It can also be quickly assembled before and after use, improving the assembly efficiency while saving transportation space.

[0019] In an example of the present invention, casters are also installed at the bottom end of the support cross plate 13, and a braking pedal is arranged on the side of the casters to facilitate the movement of the overall support device. After reaching the designated position, step on the pedal to lock the wheels, and the inner wall of the tunnel is supported by the provided synchronous support mechanism 100 and directional driving mechanism 200.

[0020] As Figure 1 and Figure 2 As shown in the figure, as a preferred embodiment of the present invention, the synchronous support mechanism 100 includes a fixed support rod 3, a first arc-shaped support rod 4, a second arc-shaped support rod 5, a first limiting rod 6, a connecting rod 7, a first elastic support member 8, and a first limiting block 12; The fixed support rod 3 is fixedly installed on the upper surface of the movable rod 2, the first limiting rod 6 is slidably installed on the fixed support rod 3, and a first limiting block 12 is installed inside the first limiting rod 6; An arc-shaped support rod 1 and an arc-shaped support rod 2 are installed on the outer side of the limiting rod 1, and the adjacent arc-shaped support rod 1 and arc-shaped support rod 2 are connected by a connecting rod 3. An elastic support member 1 is arranged inside the arc-shaped support rod 1 and arc-shaped support rod 2, and the end of the elastic support member 1 is connected to the connecting rod 3.

[0021] In an example of the present invention, the arc-shaped support rod 1 and the arc-shaped support rod 2 in this application are both connected to the connecting rod 3 in a clearance fit manner, and the connecting rod 3 has a certain deflection and can deform to a certain extent in the vertical direction, so as to effectively avoid jamming of the arc-shaped support rod 1 and the arc-shaped support rod 2 during the sliding process. The arc-shaped support rod 1 and the arc-shaped support rod 2 are in contact with the inner wall of the tunnel during actual use. By pushing the limiting rod 1, the outer sides of the arc-shaped support rod 1 and the arc-shaped support rod 2 move, and the connecting rod 3 slides along the arc-shaped support rod 1 and the arc-shaped support rod 2 at the same time. When the arc-shaped support rod 1 and the arc-shaped support rod 2 are subjected to a force, the distance between the arc-shaped support rod 1 and the arc-shaped support rod 2 decreases, and the elastic support member 1 is elastically deformed under the force.

[0022] As Figure 1 and Figure 3 shown, as another preferred embodiment of the present invention, the locking module includes a limiting hole 4, a V-shaped rod 5 and a plugging rod 6; The limiting hole 4 is arranged on the fixed support rod 1 and the limiting rod 1, and the number of the arranged limiting holes 4 is adjusted according to needs. The plugging rod 6 is slidably installed on the limiting hole 4; The V-shaped rod 5 is fixedly installed at the end of the plugging rod 6 to facilitate locking of the limiting rod 1 when the plugging rod 6 is inserted into the limiting hole 4.

[0023] In an example of the present invention, after adjusting the limiting rod 1 along the fixed support rod 1 to a specified position, the plugging rod 6 and the limiting hole 4 are coaxially arranged, and the V-shaped rod 5 is pushed to insert the plugging rod 6 on the fixed support rod 1 and the limiting rod 1, so as to fix the fixed support rod 1 and the limiting rod 1.

[0024] As Figure 1 and Figure 4 shown, as another preferred embodiment of the present invention, the directional driving mechanism 200 includes a driving gear 7, a straight tooth part 8, a limiting rod 2 and a limiting block 2; The driving gears 7 are arranged in pairs at the top of the C-shaped rod 6, and the adjacent driving gears 7 are meshed; The straight tooth part 8 is arranged on the inner side of the movable rod 1, and the straight tooth part 8 is meshed with the driving gear 7; The second limiting rod 17 is symmetrically installed on the outside of the movable rod 2. The second limiting rod 17 is slidably connected to the bottom frame 1, and a second limiting block 18 is installed at the bottom end of the second limiting rod 17.

[0025] In an example of the present invention, a through hole 19 for the movement of the movable rod 2 and the straight tooth portion 16 is provided on the support cross plate 13. When the driving gear 15 rotates along the C-shaped rod 14, due to the meshing of adjacent driving gears 15 and the meshing of the driving gear 15 with the straight tooth portion 16, when one side of the arc-shaped support rod two 5 rotates along the C-shaped rod 14, the driving gear 15 on the other side can be driven to rotate. The driving gears 15 on both sides rotate in opposite directions, thereby pushing the movable rod 2 and the synchronous support mechanism 100 to move in the height direction.

[0026] Such as Figure 1 and Figure 4 As shown, as another preferred embodiment of the present invention, the driving gear 15 is传动 connected to an external motor through a coupling, so as to drive the driving gear 15, the straight tooth portion 16, the movable rod 2 and the synchronous support mechanism 100 to move in the height direction under the drive of the motor.

[0027] In an example of the present invention, any one side of the driving gear 15 in this application can be connected to the motor, and the motor is a forward and reverse motor. At the same time, the motor is electrically connected to an external controller, and when the motor works, it drives the driving gear 15 on one side to rotate, and then drives the driving gear 15 on the other side to rotate synchronously.

[0028] Such as Figure 1 and Figure 5 As shown, as another preferred embodiment of the present invention, the elastic locking mechanism 300 includes a lever 20, a slot 21 and an elastic support member two 22; The bottom end of the lever 20 is hinged to the support cross plate 13, and the slots 21 are arranged at equal intervals along the outside of the movable rod 2; The elastic support member two 22 is arranged between the support cross plate 13 and the lever 20, and the elastic support member two 22 undergoes elastic deformation when the movable rod 2 moves upward.

[0029] In an example of the present invention, when the movable rod 2 moves upward along the bottom frame 1, the second limiting rod 17 moves synchronously along the bottom frame 1, which can effectively improve the stability of the movement. In addition, when the movable rod 2 moves, the free end of the lever 20 disengages from the slot 21, and the elastic support member two 22 is stretched by the force. When the free end of the lever 20 is inserted into the bottom slot 21, the movable rod 2 can be supported, thereby preventing the movable rod 2 from falling downward.

[0030] Such as Figure 1 and Figure 5As shown, as another preferred embodiment of the present invention, the elastic locking mechanism 300 further includes a positioning cross bar 23, a positioning column 24 and a guide groove 25; The positioning cross bar 23 is hinged to the outside of the C-shaped bar 14, and the positioning column 24 is installed at the free end of the positioning cross bar 23; The guide groove 25 is arranged on the side surface of the lever 20. The guide groove 25 is slidably connected with the positioning column 24, and when the positioning cross bar 23 is拨动, the lever 20 is pushed to swing along the support cross plate 13, so as to release the locking of the movable rod 2.

[0031] In an example of the present invention, when the movable rod 2 moves, the free end of the lever 20 is embedded in the slot 21. When it is necessary to release the locking of the movable rod 2, the positioning cross bar 23 is manually拨动 outwards. One end of the positioning cross bar 23 swings along the C-shaped bar 14, and the other end of the positioning cross bar 23 pushes the positioning column 24 to slide along the guide groove 25, and a force is applied to the lever 20 during the sliding process, so as to push the bottom end of the lever 20 to swing along the support cross plate 13, and further make the free end of the lever 20脱离 the slot 21, so as to be conveniently stored on the bottom frame 1 after the use of the support device, thereby reducing the space occupied during subsequent transportation.

[0032] It should be noted that there is an unclear expression "拨动" in the original text which may need to be further clarified in the actual context for a more accurate translation. Here it is tentatively translated as "拨动".In summary, the support device is transported to the support working position in advance according to the tunnel construction position, and the pedal is stepped on to lock the wheels, thereby preventing the device from shifting during the support process. By pushing the first limiting rod 6, the outer sides of the first arc-shaped support rod 4 and the second arc-shaped support rod 5 move. At the same time, the connecting rod 7 slides along the first arc-shaped support rod 4 and the second arc-shaped support rod 5. During the process of pushing the first limiting rod 6 to slide along the fixed support rod 3, the positions of the limiting holes 9 provided on the fixed support rod 3 and the first limiting rod 6 are adjusted. When the limiting holes 9 on the fixed support rod 3 and the first limiting rod 6 are on the same axis, the plugging rod 11 is placed on the limiting hole 9 at the corresponding position, and the V-shaped rod 10 is pushed to insert the plugging rod 11 onto the fixed support rod 3 and the first limiting rod 6, thereby realizing the fixation of the fixed support rod 3 and the first limiting rod 6. Either side of the driving gear 15 is connected to the motor through a coupling, and drives the driving gear 15 to rotate when the motor works. Since the adjacent driving gears 15 are meshed, the driving gear 15 on the other side is driven to rotate synchronously, and the rotation directions of the driving gears 15 on both sides are opposite. At the same time, the driving gear 15 is also meshed with the straight-tooth part 16, and can push the straight-tooth parts 16 and the movable rod 2 on both sides to move up or down when the driving gear 15 rotates. For example, when the movable rod 2 moves upward, the second limiting rod 17 moves synchronously along the bottom frame 1, which can effectively improve the stability of the movement. During this process, when the movable rod 2 moves, the free end of the shifting rod 20 disengages from the slot 21, and the second elastic support member 22 is stretched under force. When the free end of the shifting rod 20 is inserted into the slot 21 at the bottom, the movable rod 2 can be supported. When the outer sides of the first arc-shaped support rod 4 and the second arc-shaped support rod 5 are in contact with the inner wall of the tunnel at the same time, the movement stops. When it is necessary to release the lock on the movable rod 2, the positioning cross bar 23 is manually toggled outwards. One end of the positioning cross bar 23 swings along the C-shaped rod 14, and the other end of the positioning cross bar 23 pushes the positioning column 24 to slide along the guide groove 25, and applies a force to the shifting rod 20 during the sliding process, thereby pushing the bottom end of the shifting rod 20 to swing along the support cross plate 13, and further causing the free end of the shifting rod 20 to disengage from the slot 21. This application has the characteristics of convenient movement, wide support range and stable structure, can adapt to tunnel sizes of various specifications, is not prone to structural loosening during the support process, can provide stable support. In addition, during the process of adjusting the support height, it is not easy to fall, and can effectively inhibit the occurrence of the phenomenon of overall force crushing.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A support device for tunnel construction, comprising a bottom frame, characterized in that: It further includes: A movable rod, which is slidably mounted on the bottom frame; A synchronous support mechanism, which is arranged at the top end of the movable rod and abuts against the inner wall of the tunnel during operation; A locking module, which is mounted on the synchronous support mechanism and is used to fix the position of the synchronous support mechanism when the synchronous support mechanism is in support; A support cross plate, which is fixedly mounted inside the bottom frame. A C-shaped rod is mounted on the support cross plate, and a directional driving mechanism is arranged on the C-shaped rod. The directional driving mechanism is connected to the movable rod, and the directional driving mechanism pushes the movable rod and the synchronous support mechanism to slide along the bottom frame in the height direction during operation; An elastic locking mechanism, which is symmetrically arranged outside the directional driving mechanism. When the free end of the elastic locking mechanism is embedded in the movable rod, it supports the movable rod to prevent the movable rod and the synchronous support mechanism from falling during support.

2. A tunnel construction support device according to claim 1, characterized in that: The synchronous support mechanism includes a fixed support rod, a first arc-shaped support rod, a second arc-shaped support rod, a first limiting rod, a connecting rod, a first elastic support member, and a first limiting block; The fixed support rod is fixedly mounted on the upper surface of the movable rod. The first limiting rod is slidably mounted on the fixed support rod, and a first limiting block is mounted inside the first limiting rod; A first arc-shaped support rod and a second arc-shaped support rod are mounted outside the first limiting rod, and adjacent first arc-shaped support rods and second arc-shaped support rods are connected by a connecting rod. A first elastic support member is arranged inside the first arc-shaped support rod and the second arc-shaped support rod, and the end of the first elastic support member is connected to the connecting rod.

3. A tunnel construction support device according to claim 2, characterized in that: The locking module includes a limiting hole, a V-shaped rod, and a plugging rod; The limiting hole is arranged on the fixed support rod and the first limiting rod, and the plugging rod is slidably mounted on the limiting hole; The V-shaped rod is fixedly mounted at the end of the plugging rod to lock the first limiting rod when the plugging rod is inserted into the limiting hole.

4. A tunnel construction support device according to claim 1, characterized in that: The directional driving mechanism includes a driving gear, a straight tooth part, a second limiting rod, and a second limiting block; The driving gears are arranged in pairs at the top end of the C-shaped rod, and adjacent driving gears are meshed; The straight tooth part is arranged inside the movable rod and meshes with the driving gear; The second limiting rods are symmetrically mounted outside the movable rod, and the second limiting rods are slidably connected to the bottom frame, and a second limiting block is mounted at the bottom end of the second limiting rod.

5. A tunnel construction support device according to claim 4, characterized in that: The driving gear is传动 connected to an external motor through a coupling, so as to drive the driving gear, the straight tooth part, the movable rod, and the synchronous support mechanism to move in the height direction under the drive of the motor.

6. A tunnel construction support device according to claim 1, characterized in that: The elastic locking mechanism includes a lever, a slot, and a second elastic support member; The bottom end of the lever is hinged on the support cross plate, and the slots are arranged at equal intervals along the outside of the movable rod; The second elastic support member is arranged between the support cross plate and the lever, and the second elastic support member undergoes elastic deformation when the movable rod moves upward.

7. A tunnel construction support device according to claim 6, characterized in that: The elastic locking mechanism further includes a positioning cross bar, a positioning column, and a guiding groove; The positioning cross bar is hinged on the outside of the C-shaped rod, and the positioning column is mounted at the free end of the positioning cross bar; The guide groove is arranged on the side of the shifting rod, and the guide groove is slidably connected with the positioning column, and when the positioning cross bar is shifted, the shifting rod is pushed to swing along the supporting cross plate, thereby releasing the locking of the movable rod.

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