A new type of template clamping device for tunnel reinforcement

Abstract

The present invention belongs to the technical field of construction auxiliary equipment, and discloses a novel template clamping device for tunnel reinforcement, which includes a support platform with a cavity formed inside; a middle clamping assembly disposed at the midline of the top surface of the support platform, and a hydraulic lifting shaft is provided between the middle clamping assembly and the support platform; there are two sets of side clamping assemblies, and the two side clamping assemblies are symmetrically and slidably disposed on both sides of the middle clamping assembly through the first chutes on the support platform; there are two sets of driving assemblies, both of the two driving assemblies are disposed in the cavity, the input ends of the two driving assemblies are connected to the output end of the hydraulic lifting shaft, and the output ends of the two driving assemblies are respectively connected to the two side clamping assemblies. The present invention solves the problems of strong limitations and small application scope in the prior art, and is applicable to tunnel reinforcement.

Description

Technical Field

[0001] The present invention relates to the technical field of construction auxiliary equipment, and more specifically, it relates to a novel formwork clamping device for tunnel reinforcement. Background Art

[0002] Tunnels are very common in transportation, such as railway tunnels, mountain tunnels, etc. Due to the heavy objects above the tunnel, either mountains or roads, the tunnel bears loads all year round and will inevitably crack or deform. At this time, the tunnel needs to be reinforced and maintained.

[0003] During the existing tunnel maintenance process, first, formwork needs to be erected on the inner wall of the tunnel, and concrete is poured through the formwork. After the concrete solidifies, the formwork is removed. During the construction process, the formwork needs to be clamped and fixed by multiple support frames to prevent collapse. However, since the upper part of the tunnel is semi-circular, it needs to be supported by multiple support frames one by one to complete. The workload of clamping and fixing the formwork is very large, seriously affecting the project progress.

[0004] To solve the above problems, a Chinese patent (publication number: CN109989772A) discloses a formwork clamping device for tunnel reinforcement, which includes a flat plate, a driving mechanism, and a circumferential expansion clamping mechanism. On both sides above the flat plate, mounting frames are symmetrically fixed. On one side of the mounting frame, a servo motor is flange-fixed, and the output end of the servo motor is connected to the driving mechanism through a transmission member; a circumferential expansion clamping mechanism for pressing the formwork on the inner wall of the tunnel is movably connected to the driving mechanism.

[0005] Although the above technical solution drives the rotation of the rotating shaft and the adjusting wheel through the worm and worm gear transmission, and then drives the rollers to radially diverge or contract along the circumference of the sleeve under the action of the first chute, so as to drive the arc block to press or loosen the formwork, realizing overall clamping and disassembly, and the operation is simple. However, since all the rollers and the first chute are arranged on one adjusting wheel, that is, the rotation of the adjusting wheel will drive all the rollers to radially diverge or contract synchronously along the circumference of the sleeve, which makes the device only applicable to regular semi-circular tracks and cannot be applied when the tunnel span is large (the transverse radius is greater than the longitudinal radius), with strong limitations and a small application range. Summary of the Invention

[0006] The purpose of the present invention is to provide a novel formwork clamping device for tunnel reinforcement, which solves the problems of strong limitations and small application range in the prior art.

[0007] The above technical object of the present invention is achieved through the following technical solutions: A novel template clamping device for tunnel reinforcement, including a support table with a cavity formed inside; a middle clamping assembly disposed at the midline of the top surface of the support table, and a hydraulic lifting shaft is provided between the middle clamping assembly and the support table; there are two sets of side clamping assemblies, and the two side clamping assemblies are symmetrically and slidably disposed on both sides of the middle clamping assembly through the first chutes on the support table; there are two sets of driving assemblies, both of the two driving assemblies are disposed inside the cavity, the input ends of the two driving assemblies are connected to the output end of the hydraulic lifting shaft, and the output ends of the two driving assemblies are respectively connected to the two side clamping assemblies; wherein, the two driving assemblies are respectively used to drive the corresponding side clamping assembly to move horizontally, and both the middle clamping assembly and the side clamping assembly include several sets of pressing assemblies for supporting the template, and the side clamping assembly can drive all the pressing assemblies inside it to synchronously expand and contract.

[0008] The working principle of this technical solution: When using a novel template clamping device for tunnel reinforcement of the present invention to reinforce a tunnel with a large span, first, start the hydraulic lifting shaft to drive the middle clamping assembly to rise. Under the action of the driving assembly, the two side clamping assemblies on both sides gradually move away from the middle clamping assembly. After the pressing assemblies in the middle clamping assembly abut against the template on the inner side of the tunnel, start to adjust the two side clamping assemblies until all the pressing assemblies in the side clamping assemblies abut against the template on the inner side of the tunnel, that is, the tunnel reinforcement is completed.

[0009] In summary, the present invention has the following beneficial effects:

[0010] Compared with the prior art which can only be applicable to regular semi-circular tunnels, a novel template clamping device for tunnel reinforcement of the present invention, through the mutual cooperation of the middle clamping assembly, the hydraulic lifting shaft and the side clamping assembly, enables the two side clamping assemblies to move away from the middle clamping assembly during the process of the hydraulic lifting shaft driving the middle clamping assembly to rise, so as to adapt to many tunnels with a large span (the horizontal radius is greater than the vertical radius), that is, the scope of application is wider.

[0011] Furthermore, the middle clamping assembly includes a mounting frame fixedly arranged on the support table, a mounting block fixedly connected to the output end of the hydraulic lifting shaft, and the pressing assembly, wherein the pressing assembly is arranged on the top of the mounting block.

[0012] Further, each set of the side clamping assemblies includes: a "sector-shaped" control frame, which is hollow in the middle. A fixed seat is installed on the inner side of the control frame, and the bottom of the control frame is slidably connected to the first chute; a control board, which is rotatably arranged on the fixed seat through a first rotating shaft. The control board itself is fixedly connected to the first rotating shaft. A plurality of inclined second chutes are circumferentially formed on one side of the control board, and a control wheel is slidably clamped in each second chute. One end of each control wheel is also hinged to one end of the pressing assembly. The other end of the pressing assembly extends out of the control frame and is slidably connected to the control frame; a servo motor, which is fixedly arranged on the side of the fixed seat away from the control board, and the output end of the servo motor is fixedly connected to the first rotating shaft.

[0013] Further, each pressing assembly includes a support rod and an "arc-shaped" support plate fixedly arranged at one end of the support rod, and each support rod is hinged to the corresponding control wheel or fixedly connected to the corresponding mounting block.

[0014] Further, each set of the driving assemblies includes a first gear, a second gear, a transverse rack plate, a longitudinal rack plate, an "L-shaped" connecting rod and a connecting sleeve. Among them, the first gear and the second gear are both rotatably arranged in the cavity, and the first gear and the second gear are meshed. The connecting sleeve is fixedly sleeved on the output end of the hydraulic lifting shaft, and the longitudinal rack plate is fixedly arranged on one side of the connecting sleeve and is meshed with the second gear. One end of the connecting rod is fixedly connected to the transverse rack plate, and the other end passes through the cavity and is fixedly connected to the bottom of the control frame on the corresponding side.

[0015] Further, a buffer assembly is arranged between all the support rods and the corresponding support plates. Each set of buffer assemblies includes a connecting frame fixedly arranged at the free end of the support rod, a slider slidably connected to the inner side of the connecting frame, and a spring installed between the slider and the inner side of the connecting frame. A connecting plate is fixedly connected to the side of the slider away from the spring, and the free end of the connecting plate is hinged to the support plate.

[0016] Further, support legs are installed at the bottom of the support platform.

[0017] Further, a reinforcing rod is installed between the support legs and the bottom of the support platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is Figure 1 an enlarged view of part A in

[0020] Figure 3 a schematic structural diagram of the present invention when reinforcing a tunnel;

[0021] In the figure: 1. support leg; 2. reinforcement rod; 3. support platform; 4. cavity; 5. connecting rod; 6. first slide groove; 7. support plate; 8. control frame; 9. connecting plate; 10. support rod; 11. mounting frame; 12. mounting block; 13. control plate; 14. second slide groove; 15. control wheel; 16. servo motor; 17. fixing seat; 18. horizontal rack plate; 19. second gear; 20. first gear; 21. longitudinal rack plate; 22. hydraulic lifting shaft; 23. connecting frame; 24. spring; 25. slider; 26. template; 27. tunnel; 28. connecting sleeve. DETAILED DESCRIPTION

[0022] The following is combined with Figures 1 to 3 The present invention is described in further detail.

[0023] like Figure 1 and Figure 2 As shown, an embodiment of the present invention proposes a novel template clamping device for tunnel reinforcement, including a support platform 3, in which a cavity 4 is opened; an intermediate clamping assembly, which is arranged at the center line of the top surface of the support platform 3, and a hydraulic lifting shaft 22 is arranged between the intermediate clamping assembly and the support platform 3; a side clamping assembly, which has two groups, and the two side clamping assemblies are symmetrically and slidably arranged on both sides of the intermediate clamping assembly through the first slide groove 6 on the support platform 3; a driving assembly, which has two groups, and the two driving assemblies are both arranged in the cavity 4, and the input ends of the two driving assemblies are connected to the output ends of the hydraulic lifting shaft 22, and the output ends of the two driving assemblies are respectively connected to the two side clamping assemblies; wherein, the two driving assemblies are respectively used to drive the side clamping assembly on the corresponding side to move horizontally, and the intermediate clamping assembly and the side clamping assembly both include a plurality of groups of clamping assemblies for supporting the template 26, and the side clamping assembly can drive all the clamping assemblies inside it to extend and retract synchronously.

[0024] The specific working process is: first, start the hydraulic lifting shaft 22 to drive the middle clamping assembly to rise. Under the action of the driving assembly, the side clamping assemblies on both sides gradually move away from the middle clamping assembly. After the clamping assembly in the middle clamping assembly abuts against the template 26 on the inner side of the tunnel 27, start adjusting the side clamping assemblies on both sides until all the clamping assemblies in the side clamping assemblies abut against the template 26 on the inner side of the tunnel 27, thus completing the reinforcement of the tunnel 27.

[0025] In this embodiment, the middle clamping assembly, the hydraulic lifting shaft 22 and the side clamping assembly are arranged to cooperate with each other, so that when the hydraulic lifting shaft 22 drives the middle clamping assembly to rise, the side clamping assemblies on both sides move in a direction away from the middle clamping assembly, so as to adapt to many tunnels 27 with larger spans (the horizontal radius is larger than the longitudinal radius), that is, the scope of application is wider.

[0026] During actual use, in order to improve the overall stability of the device, four support legs 1 can be installed at the bottom of the support platform 3; in order to further improve the overall stability of the device, a reinforcing rod 2 can be installed between each support leg 1 and the bottom of the support platform 3.

[0027] As Figure 1 and Figure 2 shown, according to another embodiment of the present invention, a novel template clamping device for tunnel reinforcement, wherein the intermediate clamping assembly includes a mounting frame 11 fixedly arranged on the support platform 3, a mounting block 12 fixedly connected to the output end of the hydraulic lifting shaft 22, and the pressing assembly, wherein the pressing assembly is arranged on the top of the mounting block 12.

[0028] This solution realizes the reinforcement of the top of the tunnel 27 by the mutual cooperation of the mounting frame 11, the mounting block 12, the pressing assembly and the hydraulic lifting shaft 22. During use, the hydraulic lifting shaft 22 is started to drive the mounting block 12 and the pressing assembly fixedly arranged on the mounting block 12 to rise until the pressing assembly abuts against the template 26 on the inner side of the top of the tunnel 27.

[0029] As Figure 1 and Figure 2 shown, according to another embodiment of the present invention, a novel template clamping device for tunnel reinforcement, wherein each set of the side clamping assemblies includes: a "sector-shaped" control frame 8, the middle of which is hollowed out, a fixed seat 17 is installed inside the control frame 8, and the bottom of the control frame 8 is slidably connected to the first chute 6; a control board 13, which is rotatably arranged on the fixed seat 17 through a first rotating shaft, the control board 13 itself is fixedly connected to the first rotating shaft, a plurality of inclined second chutes 14 are circumferentially arranged on one side of the control board 13, and a control wheel 15 is slidably clamped in each second chute 14, and one end of the pressing assembly is also hinged to each control wheel 15, and the other end of the pressing assembly extends out of the control frame 8 and is slidably connected to the control frame 8; a servo motor 16, which is fixedly arranged on the side of the fixed seat 17 away from the control board 13, and the output end of the servo motor 16 is fixedly connected to the first rotating shaft.

[0030] This solution realizes the clamping of the formwork 26 inside the side tunnel 27 by the mutual cooperation of the control frame 8, the fixed seat 17, the control board 13, the first chute 6, the second chute 14, the control wheel 15, the tightening assembly and the servo motor 16. During use, after the control frame 8 slides along the first chute 6 to a suitable position, the servo motor 16 is started to drive the second rotating shaft and the control board 13 to rotate. At this time, since the second chute 14 is inclined, and the control wheel 15 is slidably clamped inside the second chute 14, and one end of the tightening assembly is hinged to the control wheel 15, and the other end of the tightening assembly extends out of the control frame 8 and is slidably connected to the control frame 8, then the three control wheels 15 start to slide along the extension direction of the second chute 14 under the action of the control frame 8 and the tightening assembly, and the corresponding tightening assembly also starts to extend outwards synchronously until it tightens the formwork 26.

[0031] As Figure 1 and Figure 2 shown, according to another embodiment of the present invention, a novel formwork clamping device for tunnel reinforcement, wherein each tightening assembly includes a support rod 10 and an "arc-shaped" support plate 7 fixedly arranged at one end of the support rod 10, and each support rod 10 is hinged to the corresponding control wheel 15 or fixedly connected to the corresponding mounting block 12.

[0032] This solution realizes the tightening of the formwork 26 by the mutual cooperation of the support rod 10 and the support plate 7. Specifically, each support rod 10 is hinged to the corresponding control wheel 15 or fixedly connected to the corresponding mounting block 12. When one end of the support rod 10 is hinged to the corresponding control wheel 15, since the other end extends out of the control frame 8 and is slidably connected to it, the control wheel 15 starts to slide along the extension direction of the second chute 14 under the action of the control frame 8 and the support rod 10, realizing the tightening of the formwork 26; when one end of the support rod 10 is fixedly connected to the mounting block 12, the hydraulic lifting shaft 22 at the bottom of the mounting block 12 can drive it to move upwards and tighten the formwork 26.

[0033] As Figure 1 、 Figure 2 and Figure 3As shown, according to another embodiment of the present invention, a novel template clamping device for tunnel reinforcement, wherein each set of the driving components includes a first gear 20, a second gear 19, a transverse rack plate 18, a longitudinal rack plate 21, an "L-shaped" connecting rod 5 and a connecting sleeve 28. Among them, the first gear 20 and the second gear 19 are both rotatably arranged in the cavity 4, and the first gear 20 and the second gear 19 are meshed and connected. The connecting sleeve 28 is fixedly sleeved on the output end of the hydraulic lifting shaft 22, and the longitudinal rack plate 21 is fixedly arranged on one side of the connecting sleeve 28 and is meshed and connected with the first gear 20. The transverse rack plate 18 is slidably arranged at the bottom of the cavity 4 and is meshed and connected with the second gear 19. One end of the connecting rod 5 is fixedly connected with the transverse rack plate 18, and the other end passes through the cavity 4 and is fixedly connected with the bottom of the corresponding control frame 8 on one side.

[0034] This solution realizes the movement of the control frame 8 driven while the hydraulic lifting shaft 22 drives the mounting block 12 to rise by setting the first gear 20, the second gear 19, the transverse rack plate 18, the longitudinal rack plate 21, the "L-shaped" connecting rod 5 and the connecting sleeve 28 to cooperate with each other. During use, when the hydraulic lifting shaft 22 is started to drive the mounting block 12 to rise, since the connecting sleeve 28 is fixedly sleeved on the output end of the hydraulic lifting shaft 22, and the longitudinal rack plate 21 is fixedly arranged on one side of the connecting sleeve 28, the longitudinal rack plate 21 will rise along with the output end of the hydraulic lifting shaft 22, and at the same time drive the first gear 20 meshed with it to rotate. The first gear 20 drives the second gear 19 to rotate, and then the second gear 19 drives the transverse rack plate 18 meshed with it to move away from the hydraulic lifting shaft 22. The transverse rack plate 18 drives the connecting rod 5 and the control frame 8 to move synchronously. Similarly, when the hydraulic lifting shaft 22 drives the mounting block 12 to descend, the transverse rack plate 18 drives the connecting rod 5 and the control frame 8 to move towards the hydraulic lifting shaft 22.

[0035] During the actual use process, in order to facilitate the up and down movement of the longitudinal rack plate 21 relative to the support table 3, a through hole for the longitudinal rack plate 21 to pass through should be opened on the support table 3.

[0036] As Figure 1 and Figure 2 As shown, according to another embodiment of the present invention, a novel template clamping device for tunnel reinforcement, wherein a buffer assembly is arranged between all the support rods 10 and the corresponding support plates 7. Each set of buffer assemblies includes a connecting frame 23 fixedly arranged at the free end of the support rod 10, a slider 25 slidably connected to the inner side of the connecting frame 23, and a spring 24 installed between the slider 25 and the inner side of the connecting frame 23. One side of the slider 25 away from the spring 24 is fixedly connected with a connecting plate 9, and the free end of the connecting plate 9 is hinged to the support plate 7.

[0037] This solution further expands the applicable scope of the present invention by setting up the connection box 7, the slider 25, the spring 24 and the connecting plate 9 to cooperate with each other. Due to the existence of the spring 24, more buffering distance is provided for the support plate 7. During use, the support plate 7 will drive the connecting plate 9 and the slider 25 to compress the spring 24 to different degrees according to the distance between the template 26 and the free end of the support rod 10, so as to adapt to tunnels 27 of more shapes.

[0038] This specific embodiment is only an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present invention, it is protected by the patent law.

Claims

1. A novel template clamping device for tunnel reinforcement, characterized in that, Comprising: A support platform (3) with a cavity (4) formed inside; An intermediate clamping assembly disposed at the midline of the top surface of the support platform (3), and a hydraulic lifting shaft (22) is provided between the intermediate clamping assembly and the support platform (3); Side clamping assemblies, there are two groups in total, and the two side clamping assemblies are symmetrically and slidably disposed on both sides of the intermediate clamping assembly through the first sliding grooves (6) on the support platform (3); Drive assemblies, there are two groups in total, both drive assemblies are disposed inside the cavity (4), the input ends of the two drive assemblies are connected to the output end of the hydraulic lifting shaft (22), and the output ends of the two drive assemblies are respectively connected to the two side clamping assemblies; Wherein, the two drive assemblies are respectively used to drive the corresponding side clamping assembly to move horizontally, and both the intermediate clamping assembly and the side clamping assembly include several sets of abutting assemblies for supporting the template (26), and the side clamping assembly can drive all the abutting assemblies inside it to synchronously expand and contract; Each group of the side clamping assemblies includes: a sector-shaped control frame (8); Each group of the drive assemblies includes a first gear (20), a second gear (19), a transverse rack plate (18), a longitudinal rack plate (21), an L-shaped connecting rod (5) and a connecting sleeve (28). Among them, the first gear (20) and the second gear (19) are both rotatably disposed inside the cavity (4), and the first gear (20) and the second gear (19) are meshed and connected. The connecting sleeve (28) is fixedly sleeved on the output end of the hydraulic lifting shaft (22), and the longitudinal rack plate (21) is fixedly disposed on one side of the connecting sleeve (28) and is meshed and connected with the first gear (20). The transverse rack plate (18) is slidably disposed at the bottom of the cavity (4) and is meshed and connected with the second gear (19). One end of the connecting rod (5) is fixedly connected to the transverse rack plate (18), and the other end passes through the cavity (4) and is fixedly connected to the bottom of the corresponding side control frame (8).

2. A novel template clamping device for tunnel reinforcement as described in claim 1, characterized in that: The intermediate clamping assembly includes a mounting frame (11) fixedly disposed on the support platform (3), a mounting block (12) fixedly connected to the output end of the hydraulic lifting shaft (22), and the abutting assembly. Among them, the abutting assembly is disposed on the top of the mounting block (12).

3. A novel template clamping device for tunnel reinforcement according to claim 2, characterized in that, The middle part of the sector-shaped control frame (8) is hollowed out. A fixed seat (17) is installed inside the control frame (8), and the bottom of the control frame (8) is slidably connected to the first sliding groove (6); Each group of the side clamping assemblies further includes: A control board (13) rotatably disposed on the fixed seat (17) through a first rotating shaft. The control board (13) itself is fixedly connected to the first rotating shaft. A plurality of inclined second sliding grooves (14) are circumferentially formed on one side of the control board (13), and a control wheel (15) is slidably clamped in each second sliding groove (14). One end of the abutting assembly is also hinged to each control wheel (15), and the other end of the abutting assembly extends out of the control frame (8) and is slidably connected to the control frame (8); A servo motor (16) fixedly disposed on the side of the fixed seat (17) away from the control board (13), and the output end of the servo motor (16) is fixedly connected to the first rotating shaft.

4. A novel template clamping device for tunnel reinforcement according to claim 3, characterized in that: Each clamping component includes a support rod (10) and an arc-shaped support plate (7) fixedly arranged at one end of the support rod (10), and each support rod (10) is hinged to the corresponding control wheel (15) or fixedly connected to the corresponding mounting block (12).

5. A novel template clamping device for tunnel reinforcement according to claim 4, characterized in that: A buffer component is arranged between all the support rods (10) and the corresponding support plates (7). Each group of buffer components includes a connection frame (23) fixedly arranged at the free end of the support rod (10), a slider (25) slidably connected to the inner side of the connection frame (23), and a spring (24) installed between the slider (25) and the inner side of the connection frame (23). A connection plate (9) is fixedly connected to the side of the slider (25) away from the spring (24), and the free end of the connection plate (9) is hinged to the support plate (7).

6. A novel template clamping device for tunnel reinforcement as described in claim 5, characterized in that: Support legs (1) are installed at the bottom of the support table (3).

7. A novel template clamping device for tunnel reinforcement according to claim 6, characterized in that: Reinforcing rods (2) are installed between the support legs (1) and the bottom of the support table (3).

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