Tunnel wall formwork support

Abstract

The utility model relates to the technical field of tunnel engineering, in particular to a tunnel wall formwork support which comprises a guide rail, a walking beam is connected to the outer wall of the guide rail in a sliding mode, a motor is fixedly connected to the outer wall of the walking beam, and an output shaft of the motor is fixedly connected with a two-way screw through a coupler. The outer wall of the two-way screw is in threaded connection with a threaded block, the outer wall of the threaded block is rotationally connected with a telescopic rod, and one end of the telescopic rod is slidably connected with a supporting frame. According to the tunnel formwork support, the two-way screw can rotate by starting the motor, the outer wall of the two-way screw is in threaded connection with the threaded block, the threaded block can slide along the sleeve rod, then the telescopic rod is driven to be folded, the supporting frame can be supported, and the effect of conveniently adjusting the height of the tunnel formwork support is achieved; and the sliding blocks can slide along the limiting grooves, and the outer walls of the sliding blocks are rotationally connected with push rods, so that the effect of conveniently adjusting the supporting template according to the change of the diameter of the tunnel is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel engineering, and specifically, to a formwork support for a tunnel wall. Background Technique

[0002] A formwork support for a tunnel wall is a device for supporting and fixing the formwork on the inner wall of a tunnel during tunnel construction.

[0003] The existing patent (publication number: CN217999615U) discloses a formwork support for a tunnel. The utility model discloses a formwork support for a tunnel, which relates to the technical field of tunnel engineering and can support tunnel formworks according to different specifications of tunnels. It includes a first arc plate and a second arc plate. The opposite ends of the first arc plate and the second arc plate are hinged to each other and can form a semi-circular plate body through rotational cooperation. A plurality of outer support columns with adjustable lengths are arranged on the outer arc surfaces of the first arc plate and the second arc plate. Inner support columns are hinged to the inner arc surfaces of the first arc plate and the second arc plate. In the state of the semi-circular plate body, the opposite ends of the first arc plate and the second arc plate and the ends of the inner support columns far from the semi-circular plate body can be detachably connected to the tunnel ground. By adjusting the length of the outer support columns, the utility model can support tunnel formworks with different widths and heights. At the same time, through the hinging of each component, the whole support can be stored, which is convenient for handling in the tunnel.

[0004] In the process of implementing the present utility model, the inventor found that the following problems exist in the prior art: When constructing an underground excavation station, a formwork support is needed to support the inner wall of the excavated tunnel. Since the heights of different tunnels are different, most of the existing formwork supports for tunnel walls are fixed structures and are inconvenient to adjust the height of the support according to the height change of the tunnel, thus reducing their applicability.

[0005] Therefore, we urgently need to provide a formwork support for a tunnel wall. Content of the Utility Model

[0006] (1) Technical Problems to be Solved

[0007] Aiming at the deficiencies of the prior art, the purpose of the present utility model is to provide a formwork support for a tunnel wall, which can facilitate the adjustment of the height of the support.

[0008] (2) Technical Solutions

[0009] To achieve the above object, the present utility model provides the following technical solutions. A tunnel wall formwork support, and the technical solutions adopted are as follows: It includes a guide rail, and a walking beam is slidably connected to the outer wall of the guide rail. A motor is fixedly connected to the outer wall of the walking beam, and the output shaft of the motor is fixedly connected to a bidirectional screw through a coupling. A threaded block is threadedly connected to the outer wall of the bidirectional screw, and a telescopic rod is rotatably connected to the outer wall of the threaded block. One end of the telescopic rod is slidably connected to a support frame.

[0010] A chute is provided at the bottom of the support frame, and a sleeve rod is fixedly connected to the inside of the walking beam.

[0011] As a preferred solution, the fit between the bidirectional screw and the threaded block is tight, and the threaded block is slidably connected to the outer wall of the sleeve rod. When supporting the tunnel wall formwork, the bidirectional screw can be rotated to drive the threaded block to move.

[0012] As a preferred solution, the telescopic rod is shaped like an X, and one end of the telescopic rod is slidably connected to the chute. When supporting the tunnel wall formwork, one end of the telescopic rod can slide along the chute.

[0013] As a preferred solution, a support rod is fixedly connected to the outer wall of the support frame, a first formwork is rotatably connected to one end of the support rod, and a jack is slidably connected to the bottom of the first formwork. When supporting the tunnel wall formwork, the first formwork can be supported.

[0014] As a preferred solution, a housing is fixedly connected to the top of the support frame, a hydraulic rod is fixedly connected to the inside of the housing, and a slider is fixedly connected to the output end of the hydraulic rod. When supporting the tunnel wall formwork, the hydraulic rod can be started to drive the slider to move.

[0015] As a preferred solution, a limiting groove is provided inside the housing, the slider is slidably connected to the limiting groove, and a push rod is rotatably connected to the outer wall of the slider. When supporting the tunnel wall formwork, the slider can slide along the limiting groove.

[0016] As a preferred solution, a rotating rod is rotatably connected to the inside of the housing, the push rod is rotatably connected to the outer wall of the rotating rod, and a second formwork is rotatably connected to one end of the push rod. When supporting the tunnel wall formwork, the push rod can rotate along the rotating rod.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the present utility model provides a tunnel wall formwork support, which has the following beneficial effects:

[0019] 1. The utility model is provided with a motor, a bidirectional screw rod, a threaded block, a sleeve rod, a telescopic rod and a support frame. When the user adjusts the height of the tunnel formwork support, by starting the motor, the bidirectional screw rod can be rotated. Since the threaded block is threadedly connected to the outer wall of the bidirectional screw rod, the threaded block can slide along the sleeve rod, thereby driving the telescopic rod to fold, and can support the support frame, achieving the effect of facilitating the adjustment of the height of the tunnel formwork support.

[0020] 2. The utility model is provided with a hydraulic rod, a slider, a push rod, a limiting groove and a second template. When the user adjusts tunnel formworks with different diameters, by starting the hydraulic rod, the slider can slide along the limiting groove. Since the push rod is rotatably connected to the outer wall of the slider, the push rod can support the second template, achieving the effect of facilitating the adjustment of the support template according to the change of the tunnel diameter. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic three-dimensional structure diagram of the utility model;

[0022] Figure 2 is a side sectional view of the walking beam of the utility model;

[0023] Figure 3 is a three-dimensional view of the support frame of the utility model;

[0024] Figure 4 is a front sectional view of the outer shell of the utility model;

[0025] Figure 5 is a three-dimensional view of the second template of the utility model.

[0026] In the figure: 1, guide rail; 2, walking beam; 3, motor; 4, bidirectional screw rod; 5, threaded block; 6, sleeve rod; 7, telescopic rod; 8, support frame; 9, chute; 10, support rod; 11, first template; 12, jack; 13, outer shell; 14, hydraulic rod; 15, slider; 16, push rod; 17, rotating rod; 18, limiting groove; 19, second template. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1-5, in this embodiment, a rack adjustment and guiding assembly is proposed, which includes a guide rail 1. A traveling beam 2 is slidably connected to the outer wall of the guide rail 1. A motor 3 is fixedly connected to the outer wall of the traveling beam 2. The output shaft of the motor 3 is fixedly connected to a bidirectional screw 4 through a coupling. A threaded block 5 is threadedly connected to the outer wall of the bidirectional screw 4. A telescopic rod 7 is rotatably connected to the outer wall of the threaded block 5. One end of the telescopic rod 7 is slidably connected to a support frame 8. By setting the motor 3, the bidirectional screw 4, the threaded block 5, the sleeve rod 6, the telescopic rod 7 and the support frame 8, when the user adjusts the height of the tunnel formwork support, by starting the motor 3, the bidirectional screw 4 can be rotated. Since the threaded block 5 is threadedly connected to the outer wall of the bidirectional screw 4, the threaded block 5 can slide along the sleeve rod 6, thereby driving the telescopic rod 7 to fold, and the support frame 8 can be supported, achieving the effect of facilitating the adjustment of the height of the tunnel formwork support.

[0029] A chute 9 is opened at the bottom of the support frame 8. A sleeve rod 6 is fixedly connected to the inside of the traveling beam 2. By setting the hydraulic rod 14, the slider 15, the push rod 16, the limit groove 18 and the second template 19, when the user adjusts tunnel formworks with different diameters, by starting the hydraulic rod 14, the slider 15 can slide along the limit groove 18. Since the push rod 16 is rotatably connected to the outer wall of the slider 15, the push rod 16 can support the second template 19, achieving the effect of facilitating the adjustment of the support template according to the change of the tunnel diameter.

[0030] The fit between the bidirectional screw 4 and the threaded block 5 is tight. The threaded block 5 is slidably connected to the outer wall of the sleeve rod 6. When supporting the tunnel wall formwork, the threaded block 5 can slide along the sleeve rod 6.

[0031] The telescopic rod 7 is shaped like an X. One end of the telescopic rod 7 is slidably connected in the chute 9. When supporting the tunnel wall formwork, one end of the telescopic rod 7 can slide along the chute 9.

[0032] A support rod 10 is fixedly connected to the outer wall of the support frame 8. One end of the support rod 10 is rotatably connected to a first template 11. A jack 12 is slidably connected to the bottom of the first template 11. When supporting the tunnel wall formwork, the first template 11 can be supported.

[0033] A housing 13 is fixedly connected to the top of the support frame 8. A hydraulic rod 14 is fixedly connected to the inside of the housing 13. The output end of the hydraulic rod 14 is fixedly connected to a slider 15. When supporting the tunnel wall formwork, the hydraulic rod 14 can be started to drive the slider 15 to move.

[0034] A limit groove 18 is opened in the housing 13. The slider 15 is slidably connected in the limit groove 18. A push rod 16 is rotatably connected to the outer wall of the slider 15. When supporting the tunnel wall formwork, the slider 15 can slide along the limit groove 18.

[0035] A rotating rod 17 is rotatably connected inside the housing 13. A push rod 16 is rotatably connected to the outer wall of the rotating rod 17. One end of the push rod 16 is rotatably connected to a second template 19. When supporting the tunnel wall template, the push rod 16 can be rotated along the rotating rod 17.

[0036] The working principle of the present utility model is as follows: When the user adjusts the height of the tunnel formwork support, by starting the motor 3, the bidirectional screw 4 can be rotated. Since a threaded block 5 is threadedly connected to the outer wall of the bidirectional screw 4, the threaded block 5 can slide along the sleeve rod 6, thereby driving the telescopic rod 7 to fold, and the support frame 8 can be supported, achieving the effect of facilitating the adjustment of the height of the tunnel formwork support. When the user adjusts tunnel formworks with different diameters, by starting the hydraulic rod 14, the slider 15 can slide along the limiting groove 18. Since the push rod 16 is rotatably connected to the outer wall of the slider 15, the push rod 16 can support the second template 19, achieving the effect of facilitating the adjustment of the support template according to the change in the tunnel diameter.

[0037] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0038] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A tunnel wall formwork support, comprising a guide rail (1), characterized in that: The outer wall of the guide rail (1) is slidably connected to a walking beam (2), the outer wall of the walking beam (2) is fixedly connected to a motor (3), the output shaft of the motor (3) is fixedly connected to a bidirectional screw (4) via a coupling, the outer wall of the bidirectional screw (4) is threadedly connected to a threaded block (5), the outer wall of the threaded block (5) is rotatably connected to a telescopic rod (7), and one end of the telescopic rod (7) is slidably connected to a support frame (8); A sliding groove (9) is provided at the bottom of the support frame (8), and a sleeve rod (6) is fixedly connected inside the walking beam (2).

2. A tunnel wall formwork support according to claim 1, characterized in that: The bidirectional screw (4) and the threaded block (5) are tightly fitted, and the threaded block (5) is slidably connected to the outer wall of the sleeve rod (6).

3. A tunnel wall formwork support according to claim 1, characterized in that: The shape of the telescopic rod (7) is set to be X-shaped, and one end of the telescopic rod (7) is slidably connected in the sliding groove (9).

4. A tunnel wall formwork support according to claim 1, characterized in that: The outer wall of the support frame (8) is fixedly connected to a support rod (10), one end of the support rod (10) is rotatably connected to a first template (11), and the bottom of the first template (11) is slidably connected to a jack (12).

5. The tunnel wall formwork support according to claim 1, characterized in that: The top of the support frame (8) is fixedly connected to a housing (13), the interior of the housing (13) is fixedly connected to a hydraulic rod (14), and the output end of the hydraulic rod (14) is fixedly connected to a sliding block (15).

6. A tunnel wall formwork support according to claim 5, characterized in that: A limiting groove (18) is provided inside the housing (13), the slider (15) is slidably connected in the limiting groove (18), and the outer wall of the slider (15) is rotatably connected to a push rod (16).

7. A tunnel wall formwork support according to claim 6, characterized in that: The interior of the housing (13) is rotatably connected to a rotating rod (17), the push rod (16) is rotatably connected to the outer wall of the rotating rod (17), and one end of the push rod (16) is rotatably connected to a second template (19).

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