Supporting mechanism for tunnel construction

Abstract

The utility model provides a supporting mechanism for tunnel construction, which belongs to the technical field of tunnel construction and comprises a bearing frame, a rotating part, a lifter, a top pressing plate and a driver. The bearing frame is provided with a supporting face, a standing face, a mounting hole, an avoiding hole and a containing cavity. The rotating part is mounted in the mounting hole and is rotationally connected with the bearing frame; the lifter is fixedly mounted on the rotating part; the free end of the lifter extends upwards; the top pressing plate is fixedly mounted at the free end of the lifter; the top pressing plate is provided with an arc-shaped surface, and the top pressing plate and the lifter correspond to the avoiding hole; the driver is arranged in the containing cavity and connected with the bearing frame. The driver drives the rotating piece, the lifter and the top pressing plate to rotate and penetrate through the avoiding hole to enter or penetrate out of the containing cavity. According to the supporting mechanism for tunnel construction, the lifting device and the top pressing plate do not need to be detached, tunnel construction can be conducted continuously and smoothly, and meanwhile the working efficiency of tunnel construction is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel construction, and more specifically, relates to a support mechanism for tunnel construction. Background Art

[0002] Tunnels are built underground, underwater or in mountains, and railways are laid or roads are built for motor vehicles to pass through. When installing and processing the inner wall of the tunnel subsequently, in order to ensure the safe and stable progress of the tunnel construction process, it is necessary to support the inner wall of the tunnel. At present, when supporting the tunnel, due to the easy mutual influence and interference between the tunnel support measures and the processing of the inner wall of the tunnel, and the disassembly, movement and other operations of the support equipment and processing equipment also take a lot of time and effort, resulting in poor continuity of tunnel construction and low construction efficiency. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a support mechanism for tunnel construction, so as to solve the technical problems of poor continuity of tunnel construction and low construction efficiency existing in the prior art.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a support mechanism for tunnel construction, including:

[0005] A carrier frame for installation in a tunnel; a support surface and a standing surface located on one side of the support surface are provided at the upper end of the carrier frame; a receiving cavity is provided inside the carrier frame below the support surface, and an installation hole and an avoidance hole located on one side of the installation hole are provided on the support surface; and both the avoidance hole and the installation hole are communicated with the receiving cavity;

[0006] A rotating member is installed in the installation hole and is rotatably connected to the carrier frame; the rotation axis of the rotating member is perpendicular to the arrangement direction of the avoidance hole and the installation hole;

[0007] A lifter is fixedly installed on the rotating member; the free end of the lifter extends upward;

[0008] A top pressing plate is fixedly installed on the free end of the lifter; an arc surface adapted to the inner wall of the tunnel is provided on the top pressing plate; the top pressing plate, the lifter and the avoidance hole correspond to each other;

[0009] A driver is arranged in the receiving cavity and is fixedly connected to the carrier frame; the free end of the driver is in transmission connection with the rotating member, and is used for driving the rotating member, the lifter and the top pressing plate to rotate and pass through the avoidance hole to enter or exit the receiving cavity.

[0010] In a possible implementation, an installation groove is provided on the carrier frame at the top of the accommodation cavity, and the installation groove communicates with the installation hole; a rotation hole is provided on the inner wall of the installation hole, the rotation shaft of the rotating member is fitted and installed in the rotation hole, and one end of the rotation shaft is located in the installation groove.

[0011] In a possible implementation, the driver includes a driving motor, a reduction gear, a driving gear and a driven gear. The driven gear is located in the installation groove and is installed on the rotation shaft; the driving motor is connected to the reduction gear, and the driving gear is installed on the output shaft of the driving motor, and the driving gear is meshed with the driven gear.

[0012] In a possible implementation, the installation groove penetrates through the upper end of the carrier frame up and down, and the diameter of the driven gear is larger than the depth of the installation groove.

[0013] In a possible implementation, the avoidance hole includes a first long hole and a second long hole, and the first long hole is perpendicular to the second long hole; the first long hole is located between the installation hole and the second long hole, and one end of the first long hole communicates with one side of the installation hole, and the other end communicates with the second long hole; the first long hole corresponds to the lifter, and the second long hole corresponds to the top pressing plate.

[0014] In a possible implementation, the carrier frame includes a top plate and a plurality of columns installed at the lower end of the top plate, and the top plate and the plurality of columns enclose the accommodation cavity; the support surface and the standing surface are provided on the upper end surface of the top plate, and the installation hole and the avoidance hole are provided on the top plate.

[0015] In a possible implementation, a safety baffle is further provided on the upper end surface of the carrier frame between the support surface and the standing surface.

[0016] In a possible implementation, the support mechanism for tunnel construction further includes a covering plate and a shielding cover. The covering plate is used to cover the avoidance hole, and the shielding cover covers the installation hole.

[0017] In a possible implementation, the number of the support surfaces is two, and they are respectively located on both sides of the standing surface; the accommodation cavity, the installation hole, the avoidance hole, the rotating member, the lifter and the top pressing plate are all two, and they respectively correspond to the two support surfaces.

[0018] In a possible implementation, a plurality of traveling wheels are provided at the lower end of the carrier frame.

[0019] The beneficial effects of the support mechanism for tunnel construction provided by the present utility model are as follows: Compared with the prior art, when the support mechanism for tunnel construction of the present utility model works, first place the support frame in the tunnel, and install the rotating member, the lifter, the top pressing plate and the driver on the support frame; and the standing surface on the support frame is directly below the position to be processed on the inner wall of the tunnel. Start the lifter to drive the top pressing plate to move up and down, and the arc surface on the top pressing plate contacts and acts on the inner wall of the tunnel, so that the tunnel is in a stable state; the processing actions of the staff and the support actions are staggered and do not affect each other; when the top pressing plate is not needed, start the lifter to control the top pressing plate to move down a certain distance, and then start the driver to control the rotating member to rotate in the mounting hole, so that the lifter and the top pressing plate pass through the avoidance hole and enter the accommodation cavity; when the top pressing plate is needed, start the driver to control the lifter and the top pressing plate to move upward from the accommodation cavity and pass through the avoidance hole to be located above the support surface. This method does not require the disassembly of the lifter and the top pressing plate, enables the tunnel construction to work continuously and smoothly, and also improves the work efficiency of tunnel construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0021] Figure 1 Schematic diagram of the usage state of the support mechanism for tunnel construction provided by the embodiment of the present utility model Figure 1 ;

[0022] Figure 2 Schematic diagram of the usage state of the support mechanism for tunnel construction provided by the embodiment of the present utility model Figure 2 ;

[0023] Figure 3 Schematic diagram of the usage state of the support mechanism for tunnel construction provided by the embodiment of the present utility model Figure 3 ;

[0024] Figure 4 Top view of the support mechanism for tunnel construction provided by the embodiment of the present utility model;

[0025] Figure 5 Connection schematic diagram of the carrier frame, the rotating member and the driver provided by the embodiment of the present utility model;

[0026] Figure 6 Cross-sectional view of the support mechanism for tunnel construction provided by the embodiment of the present utility model;

[0027] Figure 7 Schematic diagram of the top plate with a safety baffle, a covering plate and a shielding cover provided by an embodiment of the present utility model.

[0028] Among them, each reference numeral in the figure:

[0029] 1, carrier frame; 11, supporting surface; 12, standing surface; 13, accommodating cavity; 14, mounting hole; 141, rotating hole; 15, avoiding hole; 151, first long hole; 152, second long hole; 16, mounting groove; 17, top plate; 18, column; 19, safety baffle; 2, rotating member; 21, rotating shaft; 3, lifter; 4, top pressing plate; 41, arc surface; 5, driver; 51, driving motor; 52, speed reducer; 53, driving gear; 54, driven gear; 6, covering plate; 61, shielding cover; 7, walking wheel; 8, tunnel. Detailed implementation manners

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0031] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0032] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0034] Please refer to Figures 1 to 7, the support mechanism for tunnel construction provided by the present utility model will be described below. A support mechanism for tunnel construction includes a carrier frame 1, a rotating member 2, a lifter 3, a top pressing plate 4, and a driver 5; the carrier frame 1 is used to be installed in a tunnel 8; the upper end of the carrier frame 1 is provided with a support surface 11 and a standing surface 12 located on one side of the support surface 11; an accommodation cavity 13 is provided inside the carrier frame 1 and is located below the support surface 11, and an installation hole 14 and an avoidance hole 15 located on one side of the installation hole 14 are provided on the support surface 11; and both the avoidance hole 15 and the installation hole 14 are communicated with the accommodation cavity 13; the rotating member 2 is installed in the installation hole 14 and is rotatably connected to the carrier frame 1; the rotation axis 21 of the rotating member 2 is perpendicular to the arrangement direction of the avoidance hole 15 and the installation hole 14; the lifter 3 is fixedly installed on the rotating member 2; the free end of the lifter 3 extends upward; the top pressing plate 4 is fixedly installed on the free end of the lifter 3; an arc surface 41 adapted to the inner wall of the tunnel 8 is provided on the top pressing plate 4; the top pressing plate 4, the lifter 3 and the avoidance hole 15 correspond to each other; the driver 5 is arranged in the accommodation cavity 13 and is fixedly connected to the carrier frame 1; the free end of the driver 5 is in transmission connection with the rotating member 2 and is used to drive the rotating member 2, the lifter 3 and the top pressing plate 4 to rotate and pass through the avoidance hole 15 to enter or exit the accommodation cavity 13.

[0035] Compared with the prior art, when the support mechanism for tunnel construction provided by the present utility model works, first place the support frame in the tunnel 8, and install the rotating member 2, the lifter 3, the top pressing plate 4, and the driver 5 on the support frame; and the standing surface 12 on the support frame is located directly below the position to be processed on the inner wall of the tunnel 8. Start the lifter 3 to drive the top pressing plate 4 to move up and down, and the arc surface 41 on the top pressing plate 4 contacts and acts on the inner wall of the tunnel 8, so that the tunnel 8 is in a stable state; the processing actions and support actions of the staff are staggered and will not affect each other; when the top pressing plate 4 is not needed, start the lifter 3 to control the top pressing plate 4 to move down a certain distance, and then start the driver 5 to control the rotating member 2 to rotate in the installation hole 14, so that the lifter 3 and the top pressing plate 4 pass through the avoidance hole 15 and enter the accommodation cavity 13; when the top pressing plate 4 is needed, start the driver 5 to control the lifter 3 and the top pressing plate 4 to move upward from the accommodation cavity 13 and pass through the avoidance hole 15 to be located above the support surface 11. This method does not require the disassembly of the lifter 3 and the top pressing plate 4, enables the tunnel 8 construction to work continuously and smoothly, and also improves the work efficiency of the tunnel 8 construction.

[0036] The lifter 3 can adopt a cylinder or an electric push rod.

[0037] Please refer to Figures 1 to 3 , Figures 5 to 7, as a specific implementation of the support mechanism for tunnel construction provided by the present utility model, an installation groove 16 is provided on the carrier 1 at the top of the accommodation cavity 13, and the installation groove 16 communicates with the installation hole 14; a rotation hole 141 is provided on the inner wall of the installation hole 14, and the rotation shaft 21 of the rotating member 2 is fitted and installed in the rotation hole 141, and one end of the rotation shaft 21 is located in the installation groove 16; during use, the rotating member 2 is installed in the installation hole 14, and one end of the rotation shaft 21 passes through the rotation hole 141 and enters the installation groove 16; one end component of the driver 5 is installed into the installation groove 16 and is in transmission connection with the rotation shaft 21 in the installation groove 16. Starting the driver 5 directly controls the rotation of the rotation shaft 21, thereby driving the rotation of the rotating member 2, the lifter 3 and the top pressing plate 4.

[0038] Please refer to Figures 1 to 3 , Figure 5 , as a specific implementation of the support mechanism for tunnel construction provided by the present utility model, the driver 5 includes a driving motor 51, a speed reducer 52, a driving gear 53 and a driven gear 54. The driven gear 54 is located in the installation groove 16 and is installed on the rotation shaft 21; the driving motor 51 is connected to the speed reducer 52, and the driving gear 53 is installed on the output shaft of the driving motor 51, and the driving gear 53 is meshed with the driven gear 54; the driving motor 51 and the speed reducer 52 are installed inside the accommodation cavity 13 and on one side of the installation groove 16. The driven gear 54 is fixed on the rotation shaft 21 of the rotating member 2 by key connection or other means, and the driving motor 51 is connected to the speed reducer 52. The driving gear 53 is installed on the output shaft or a shaft section coaxial with the output shaft, and the driving gear 53 is meshed with the driven gear 54. Starting the driving motor 51 is decelerated by the speed reducer 52, and then the rotation shaft 21 and the rotating member 2 are driven by the meshing connection of the driving gear 53 and the driven gear 54. The diameter of the driving gear 53 is smaller than the diameter of the driven gear 54, which also plays a role in reducing the rotation speed.

[0039] Please refer to Figure 5 , as a specific implementation of the support mechanism for tunnel construction provided by the present utility model, the installation groove 16 penetrates through the upper end of the carrier 1 up and down, and the diameter of the driven gear 54 is larger than the depth of the installation groove 16; by means of the installation groove 16 penetrating through the upper end of the carrier 1, the driven gear 54 can penetrate out of the installation groove 16, so that a driven gear 54 with a larger diameter size can be installed in the installation groove 16, further improving the deceleration effect.

[0040] Please refer to Figures 1 to 7, as a specific embodiment of the support mechanism for tunnel construction provided by the present utility model, the avoidance hole 15 includes a first long hole 151 and a second long hole 152, and the first long hole 151 is perpendicular to the second long hole 152; the first long hole 151 is located between the installation hole 14 and the second long hole 152, and one end of the first long hole 151 is communicated with one side of the installation hole 14, and the other end is communicated with the second long hole 152; the first long hole 151 corresponds to the lifter 3, and the second long hole 152 corresponds to the top pressing plate 4; that is, the first long hole 151 and the second long hole 152 form a T-shaped hole, wherein the first long hole 151 corresponds to the lifter 3, and the second long hole 152 corresponds to the top pressing plate 4, and the installation hole 14, the first long hole 151 and the second long hole 152 are arranged in sequence. When the rotating member 2, the lifter 3 and the top pressing plate 4 are controlled to rotate by means of the driver 5, the rotating member 2 rotates self in the installation hole 14 by means of the rotating shaft 21, and the lifter 3 passes through the first long hole 151 and enters the accommodating cavity 13, and at the same time, the top pressing plate 4 passes through the second long hole 152 and enters the accommodating cavity 13.

[0041] Please refer to Figures 1 to 3 , as a specific embodiment of the support mechanism for tunnel construction provided by the present utility model, the carrier 1 includes a top plate 17 and a plurality of columns 18 installed at the lower end of the top plate 17, and the top plate 17 and the plurality of columns 18 enclose an accommodating cavity 13; the support surface 11 and the standing surface 12 are arranged on the upper end surface of the top plate 17, and the installation hole 14 and the avoidance hole 15 are opened on the top plate 17; the top plate 17 and the plurality of columns 18 form a simple and firm carrier 1, and the top plate 17 is stably and reliably used by means of the plurality of columns 18, and the carrier 1 with this structure is convenient for processing, installation, etc.

[0042] Please refer to Figure 7 , as a specific embodiment of the support mechanism for tunnel construction provided by the present utility model, a safety baffle 19 is further arranged on the upper end surface of the carrier 1 between the support surface 11 and the standing surface 12; by means of the safety baffle 19, the support surface 11 and the standing surface 12 are separated from each other and form an independent space, so that when the staff works on the standing surface 12, they will not be interfered by the lifter 3 and the like on one side of the support surface 11, and the work is safer.

[0043] Please refer to Figure 7, as a specific implementation of the support mechanism for tunnel construction provided by the present utility model, the support mechanism for tunnel construction further includes a cover plate 6 and a shielding cover 61. The cover plate 6 is used to cover the avoidance hole 15, and the shielding cover 61 covers the installation hole 14. When the top pressing plate 4 is not needed and only the bearing frame 1 is required, the driver 5 is used to control the rotation of the rotating member 2 so that the lifter 3 and the top pressing plate 4 enter the accommodation cavity 13. Then, the cover plate 6 is used to cover the avoidance hole 15, and the shielding cover 61 is used to cover the rotating member 2 and the installation hole 14, so that the upper end surface of the bearing frame 1 is a safe surface, which is convenient for the staff to use. An annular groove is provided on the upper end surface of the bearing frame 1 around the avoidance hole 15 and the installation hole 14. The thickness of the cover plate 6 and the outer edge thickness of the shielding cover 61 are equal to the depth of the annular groove.

[0044] Please refer to Figure 4 , Figure 6 and Figure 7 , as a specific implementation of the support mechanism for tunnel construction provided by the present utility model, the number of support surfaces 11 is two, and they are respectively located on both sides of the standing surface 12. The accommodation cavity 13, the installation hole 14, the avoidance hole 15, the rotating member 2, the lifter 3 and the top pressing plate 4 are all two, and they respectively correspond to the two support surfaces 11. That is, the entire support mechanism for tunnel construction can support at two positions on the inner wall of the tunnel 8 at the same time, improving the support stability and reliability of the inner wall of the tunnel 8. Specifically, the standing surface 12 is arranged directly below the position to be processed, and the two lifters 3 are started to drive the two top pressing plates 4 to move upward simultaneously, so that the two top pressing plates 4 respectively support from bottom to top on both sides of the position to be processed on the inner wall of the tunnel 8. When it is necessary to retract the top pressing plate 4 and the lifter 3, the two drivers 5 are started to control the rotating member 2 to rotate downward, driving the lifter 3 and the top pressing plate 4 to pass through the avoidance hole 15 and be located in the accommodation cavity 13.

[0045] Please refer to Figures 1 to 3 , as a specific implementation of the support mechanism for tunnel construction provided by the present utility model, a plurality of traveling wheels 7 are provided at the lower end of the bearing frame 1. The provision of the traveling wheels 7 enables the entire support mechanism for tunnel construction to move quickly and smoothly during the working process. Specifically. When the processing position on the inner wall of the tunnel 8 changes, it can move along the length direction of the tunnel 8 to the next working position. At least four traveling wheels 7 are provided, and a locking device is provided on the traveling wheels 7.

[0046] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A support mechanism for tunnel construction, characterized in that, Comprising: A bearing frame for installation in a tunnel; a support surface is provided at the upper end of the bearing frame and a standing surface is located on one side of the support surface; an accommodation cavity is provided inside the bearing frame below the support surface, an installation hole and an avoidance hole located on one side of the installation hole are provided on the support surface; and both the avoidance hole and the installation hole are communicated with the accommodation cavity; A rotating member installed in the installation hole and rotatably connected to the bearing frame; the rotation axis of the rotating member is perpendicular to the arrangement direction of the avoidance hole and the installation hole; A lifter fixedly installed on the rotating member; the free end of the lifter extends upward; A top pressing plate fixedly installed on the free end of the lifter; an arc surface adapted to the inner wall of the tunnel is provided on the top pressing plate; the top pressing plate, the lifter and the avoidance hole correspond to each other; A driver arranged in the accommodation cavity and fixedly connected to the bearing frame; the free end of the driver is in transmission connection with the rotating member, and is used to drive the rotating member, the lifter and the top pressing plate to rotate and pass through the avoidance hole to enter or exit the accommodation cavity.

2. The support mechanism for tunnel construction according to claim 1, characterized in that, An installation groove located at the top of the accommodation cavity is provided on the bearing frame, and the installation groove is communicated with the installation hole; a rotating hole is provided on the inner wall of the installation hole, the rotation axis of the rotating member is fitted and installed in the rotating hole, and one end of the rotation axis is located in the installation groove.

3. The support mechanism for tunnel construction according to claim 2, wherein, The driver includes a driving motor, a reducer, a driving gear and a driven gear, the driven gear is located in the installation groove and installed on the rotation axis; the driving motor is connected to the reducer, and the driving gear is installed on the output shaft of the driving motor, and the driving gear is meshed with the driven gear.

4. The support mechanism for tunnel construction according to claim 3, wherein The installation groove penetrates through the upper end of the bearing frame up and down, and the diameter of the driven gear is larger than the depth of the installation groove.

5. The support mechanism for tunnel construction according to claim 1, characterized in that, The avoidance hole includes a first long hole and a second long hole, and the first long hole is perpendicular to the second long hole; the first long hole is located between the installation hole and the second long hole, and one end of the first long hole is communicated with one side of the installation hole, and the other end is communicated with the second long hole; the first long hole corresponds to the lifter, and the second long hole corresponds to the top pressing plate.

6. The support mechanism for tunnel construction according to claim 1, characterized in that, The bearing frame includes a top plate and a plurality of columns installed at the lower end of the top plate, and the top plate and the plurality of columns enclose the accommodation cavity; the support surface and the standing surface are arranged on the upper end surface of the top plate, and the installation hole and the avoidance hole are provided on the top plate.

7. The support mechanism for tunnel construction according to claim 1, characterized in that, A safety baffle is further provided on the upper end surface of the bearing frame between the support surface and the standing surface.

8. The support mechanism for tunnel construction according to claim 1, characterized in that, The support mechanism for tunnel construction further includes a covering plate and a shielding cover, the covering plate is used to cover the avoidance hole, and the shielding cover covers the installation hole.

9. The support mechanism for tunnel construction according to any one of claims 1-8, characterized in that, The number of the support surfaces is two and are respectively located on both sides of the standing surface; the accommodation cavity, the installation hole, the avoidance hole, the rotating member, the lifter and the top pressing plate are all two and respectively correspond to the two support surfaces.

10. The support mechanism for tunnel construction according to any one of claims 1-8, characterized in that, A plurality of walking wheels are provided at the lower end of the bearing frame.

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