Rock-soil tunnel supporting device

Abstract

The utility model discloses a rock-soil tunnel supporting device, which relates to the technical field of tunnel supporting, and comprises a plurality of supports, a telescopic cylinder and a top plate, the output end of the telescopic cylinder is connected with a guide pillar, the top plate is provided with an inclined groove in sliding fit with the guide pillar, and the inclined groove is connected with the telescopic cylinder. The top plate and the support are controlled by a telescopic cylinder to move up and down; the arched support is fixedly connected to the top plate; the sliding rail assembly comprises a sliding rail body and a splicing frame, the splicing frame is slidably connected to the supports through the sliding rail body, a positioning pin capable of moving up and down is arranged on the splicing frame, and the positioning pin is matched with the two adjacent supports in an inserting and limiting mode. According to the device, the supports can be quickly and accurately spliced and fixed, the splicing efficiency between the devices is greatly improved, the position and the force of the arch support can be accurately adjusted, and the high efficiency and the safety of a support system are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel support, in particular to a geotechnical tunnel support device. Background Technique

[0002] The support device for geotechnical tunnels is a key facility to ensure construction safety, prevent collapse and control deformation. This support device usually consists of an arched support frame and a telescopic cylinder. The arched support frame serves as the main body and can provide direct physical support, while the telescopic cylinder is responsible for adjusting the position and force of the frame to adapt to the changes of geotechnics. During the excavation process along the tunnel, the existing support devices face many problems when being installed and spliced. The operator needs to align them with multiple empty positions and then splice multiple devices through threads. This process is not only cumbersome, but also due to the complexity of the tunnel excavation environment, it is extremely difficult to align the hole positions, which not only consumes a lot of time, but also places too high a requirement on the proficiency of the operator. In view of this, we provide a new support structure device for geotechnical tunnels. Content of the Utility Model

[0003] Technical Problems to be Solved by the Utility Model

[0004] Aiming at the technical problems that the installation and splicing process of the existing support device for geotechnical tunnels is cumbersome, time-consuming and laborious, and has a high requirement for the proficiency of the operator, the utility model provides a geotechnical tunnel support device, which can quickly and accurately splice and fix between supports, greatly improving the assembly efficiency between devices, and can accurately adjust the position and strength of the arched support, improving the efficiency and safety of the support system.

[0005] Technical Solution

[0006] To solve the above problems, the technical solution provided by the utility model is as follows:

[0007] A geotechnical tunnel support device, including supports, several of them are provided, including a telescopic cylinder and a top plate. The output end of the telescopic cylinder is connected with a guide post. The top plate is provided with an inclined slot that slidably cooperates with the guide post. The top plate and the support move up and down under the control of the telescopic cylinder; an arched support, fixedly connected to the top plate; a slide rail assembly, including a slide rail body and a splicing frame. The splicing frame is slidably connected to the support through the slide rail body. The splicing frame is provided with a positioning pin that can move up and down. The positioning pin is inserted and limitedly cooperated with two adjacent supports.

[0008] The support is the basic support of the entire structure, and multiple supports are set up for splicing. The telescopic cylinder controls the movement of the top plate, the support remains stationary, and the top plate is connected to the arch support. The arch support is located on the top of the support, and the telescopic cylinder controls the vertical movement to achieve the support of the inner wall of the tunnel. The guide column and the oblique groove cooperate with each other, and the oblique groove can be used to accurately adjust the position and strength of the arch support to ensure the efficiency and safety of the support system. The splicing frame is used to connect adjacent supports to realize the assembly of multi-section support structures. The slide rail body assists the movement of the splicing frame. The positioning pin is used to fix the connection between the splicing frame and the support. The positioning pin can move up and down, and the splicing frame can be moved when it is lowered. After the splicing frame is in place, the positioning pin is raised to fix the splicing frame and the support. Through the close connection structure between the splicing frame and the positioning pin, the supports can be spliced ​​and fixed quickly and accurately, which greatly improves the assembly efficiency between devices, and through the rapid splicing between supports, the work efficiency of operators is further increased and the splicing time of the device is reduced.

[0009] Optionally, a synchronous shaft, a threaded shaft and a lifting rail are provided in the splicing frame, the positioning pins located at two adjacent supports are connected via a synchronous shaft transmission, the positioning pins are rotatably connected to the threaded shaft and limited to the lifting rail, and the threaded shaft and the lifting rail are connected via a threaded lifting connection.

[0010] The synchronous shaft is used to synchronously control the lifting and lowering movement of the positioning pins of adjacent supports. After the splicing frame moves into place, the positioning pins rise synchronously to fix the supports. The threaded shaft and lifting rail are used to convert the rotational motion into the lifting motion.

[0011] Optionally, both ends of the synchronization shaft are provided with tapered threads, and the end of the threaded shaft is provided with tapered threads matched with the end of the synchronization shaft.

[0012] Tapered threads are used for transmission.

[0013] Optionally, a groove for accommodating the splicing frame is provided inside the support, and a limiting groove matched with the positioning pin is provided at the top of the groove.

[0014] The groove is designed to facilitate the installation and positioning of the splicing frame. In addition, a limit groove is provided at the top of the groove to match the positioning pin. The function of the limit groove is to ensure that the positioning pin can be accurately inserted into the support, thereby achieving a stable connection between the two supports. The operation steps in the splicing process are simplified and the work efficiency is improved.

[0015] Optionally, the cross-sectional shape of the positioning pin and the limiting groove is an I-shaped structure.

[0016] The I-shaped structure provides a larger contact area, which helps the positioning pin to be more stable when inserted into the limit slot. Compared with shapes such as circles, the I-shaped structure has a better limiting effect and is less likely to shift.

[0017] Optionally, the telescopic cylinder is horizontally fixedly connected to the support.

[0018] The horizontally arranged telescopic cylinder can set the acting force of the telescopic cylinder horizontally. The bottom of the telescopic cylinder acts horizontally on the side wall of the support, and the height of the top plate is controlled by the guide post and the inclined slot. Compared with setting the telescopic cylinder vertically, the horizontally arranged telescopic cylinder can set a structure with controllable lifting movement at a limited height. The telescopic cylinder itself has a height, and a vertically arranged telescopic cylinder cannot be set below this height.

[0019] Optionally, alloy coatings are provided on the surfaces of the guide post and the inclined slot.

[0020] The alloy coatings increase the wear resistance and extend the service life.

[0021] Optionally, a plurality of guide rails are fixedly connected to both inner sides of the support, the top plate is provided with guide slots, and the guide rails are adapted to the guide slots.

[0022] The guide rails and the guide slots can ensure that the top plate slides smoothly along the guide rails during vertical movement.

[0023] Beneficial effects

[0024] Adopting the technical solution provided by the present utility model, compared with the prior art, it has the following beneficial effects:

[0025] The technical solution provided by the present utility model is provided with a guide post and an inclined slot structure, and the splicing frame is slidably connected to the support through the slide rail body. A liftable positioning pin is provided on the splicing frame, and the positioning pin is inserted and limitedly matched with two adjacent supports. The splicing frame is used to connect adjacent supports to realize the assembly of multiple-section support structures. The slide rail body assists the movement of the splicing frame. The positioning pin is used to fix the connection between the splicing frame and the support. The positioning pin can move up and down. It can move the splicing frame when it descends, and when the splicing frame is in place, raise the positioning pin to fix the splicing frame and the support. Through the tight connection structure between the splicing frame and the positioning pin, the splicing and fixing between the supports can be realized quickly and accurately, greatly improving the assembly efficiency between devices, and further increasing the working efficiency of operators and reducing the splicing time of the devices by quickly splicing between the supports. Description of the drawings

[0026] Figure 1 It is a three-dimensional structural schematic diagram of a geotechnical tunnel support device proposed by an embodiment of the present utility model;

[0027] Figure 2 Partial sectional exploded three-dimensional structural schematic diagram of a support and a roof of a geotechnical tunnel support device proposed in an embodiment of the present invention;

[0028] Figure 3 Partial sectional three-dimensional structural schematic diagram of a support and a roof of a geotechnical tunnel support device proposed in an embodiment of the present invention;

[0029] Figure 4 Partial sectional three-dimensional structural schematic diagram of a support of a geotechnical tunnel support device proposed in an embodiment of the present invention;

[0030] Figure 5 Partial sectional three-dimensional structural schematic diagram of a splicing frame of a geotechnical tunnel support device proposed in an embodiment of the present invention;

[0031] 1. Support; 2. Arch support; 201. Roof; 202. Telescopic cylinder; 203. Guide rail; 204. Oblique groove; 205. Guide post; 3. Slide rail assembly; 301. Splicing frame; 302. Positioning pin; 303. Synchronous shaft; 304. Threaded shaft; 305. Lifting rail; 306. Motor. Specific implementation manners

[0032] To further understand the content of the present invention, the present invention will be described in detail with reference to the accompanying drawings and embodiments.

[0033] Embodiment

[0034] Combined with the attached Figures 1-3, a geotechnical tunnel support device, including a support 1, an arch support 2, a roof plate 201 and a splicing frame 301. There are several supports 1, including a telescopic cylinder 202 and a roof plate 201. The telescopic cylinder 202 is horizontally fixed to the support 1. The output end of the telescopic cylinder 202 is connected with a guide post 205. The roof plate 201 is provided with an inclined groove 204 that slidably cooperates with the guide post 205. The surfaces of the guide post 205 and the inclined groove 204 are provided with alloy coatings. The roof plate 201 and the support 1 are controlled to move up and down by the telescopic cylinder 202. The center of the top of the support 1 is slidably connected with an arch support 2. The outer wall of the bottom end of the arch support 2 is fixedly connected with a roof plate 201. The outer wall of the bottom end of the roof plate 201 penetrates and is connected with the outer wall of the top end of the support 1, and the bottom of the outer wall of the roof plate 201 is slidably connected with the center of the inside of the support 1. The center of the inside of the support 1 is fixedly connected with a telescopic cylinder 202. The roof plate 201 and the arch support 2 are slidably connected with the center of the top of the support 1 through the telescopic cylinder 202. On both sides of the inside of the support 1, a plurality of slide rail bodies 3 are fixedly connected at the same time, and a plurality of splicing frames 301 are slidably connected to both sides of the inside of the support 1 through the slide rail bodies 3. A plurality of positioning pins 302 are slidably connected to both sides of the inside of the splicing frame 301. The top ends of the outer walls of the positioning pins 302 are located on one side of the inside of the support 1. The top ends of the outer walls of the positioning pins 302 penetrate and are connected with one side of the inside of the support 1, and one side of the inside of the support 1 is slidably connected with the top of the outer wall of the positioning pins 302.

[0035] On both sides of the inside of the support 1, a plurality of guide rails 203 are fixedly connected, and the guide rails 203 are located at both ends of the inside of the roof plate 201. The roof plate 201 is provided with a guide groove, and the guide rails 203 are adapted to the guide groove. The top end of the outer wall of the guide rail 203 penetrates and is connected with one side of the bottom surface of the roof plate 201, and one end of the inside of the roof plate 201 is slidably connected with one side of the outer wall of the guide rail 203. A set of corresponding inclined grooves 204 are opened on both sides of the inner wall of the roof plate 201, and a guide post 205 is slidably connected to the top end inside the inclined groove 204. The guide post 205 is located on both sides of the telescopic end of the telescopic cylinder 202, and one end of the outer wall of the guide rail 203 is fixedly connected with one side of the telescopic end of the telescopic cylinder 202.

[0036] When supporting the inner wall of the tunnel along the way, by activating the telescopic cylinder 202 at the center of the inside of the support 1, since a plurality of guide rails 203 are respectively arranged at both ends of the inside of the support 1 and the roof plate 201 is limited, the roof plate 201 can only slide vertically along the outer wall of the guide rail 203. When the outer wall of the telescopic end of the telescopic cylinder 202 drives the guide post 205 to move horizontally, one side of the top of the guide post 205 abuts against the inner wall of the inclined groove 204. This action enables the telescopic cylinder 202 to push the roof plate 201 and the arch support 2 along the outer wall of the guide rail 203 through the guide post 205 and the inclined groove 204, so that the arch support 2 moves vertically upward to the tunnel through the outer wall of the guide rail 203 and supports the inner wall of the tunnel. Thus, through the mutual cooperation of the guide post 205 and the inclined groove 204, the position and force of the arch support 2 can be precisely adjusted by using the inclined groove 204, ensuring the efficiency and safety of the support system.

[0037] As Figure 1 , Figure 4 and Figure 5 shown, a synchronization shaft 303 is rotatably connected to the center inside the splicing frame 301, and a plurality of threaded shafts 304 are respectively rotatably connected to both ends of the outer wall of the synchronization shaft 303. A set of corresponding lifting rails 305 are fixedly connected to both sides inside the splicing frame 301, and the lifting rails 305 are located inside the positioning pins 302. One side of the outer wall of the lifting rail 305 is connected through the inside of one side of the positioning pin 302, and one side of the inside of the positioning pin 302 is slidably connected to one side of the outer wall of the lifting rail 305. A motor 306 is fixedly connected to one side inside the splicing frame 301, and the outer wall of the output end of the motor 306 is connected through the inside of one side of the splicing frame 301 and fixedly connected to the center of the bottom surface of one of the threaded shafts 304. The center of the top surface of the threaded shaft 304 is connected through the bottom surface center of the positioning pin 302, and the threaded shaft 304 is rotatably connected to the center of the inside of the positioning pin 302 through the external thread on its outer wall.

[0038] When assembling a plurality of supports 1, after placing the splicing frame 301 between two supports 1, the splicing frame 301 is pushed into the inside of the support 1 through the slide rail body 3 at the bottom end inside the support 1. When the inner wall of the support 1 abuts against the outer wall of the splicing frame 301, the motor 306 located on one side inside the splicing frame 301 is activated. Since a set of corresponding threaded shafts 304 are provided at both ends of the top of the synchronization shaft 303, and the two ends of the top of the synchronization shaft 303 and one side of the bottom of the threaded shaft 304 are rotatably connected to each other through gear meshing. As the output end of the motor 306 rotates, and at the same time, a plurality of lifting rails 305 are provided on both sides inside the splicing frame 301. When the lifting rails 305 enable the positioning pins 302 to move, they can only move vertically along the outer wall of the lifting rails 305. When a plurality of threaded shafts 304 on both sides inside the splicing frame 301 are simultaneously driven by the motor 306 and the synchronization shaft 303, the threaded shafts 304 simultaneously drive a plurality of positioning pins 302 located on both sides inside the splicing frame 301 through the external threads on their outer walls, so that they move vertically upward along the outer wall of the lifting rails 305, and after the positioning pins 302 are inserted into one side inside the support 1, the plurality of supports 1 are connected. Thus, through the tight connection between the threaded shafts 304 and the positioning pins 302, the device can quickly and accurately splice and fix between the supports 1 and the supports 1, greatly improving the assembly efficiency between the devices, and further increasing the working efficiency of the operator and reducing the splicing time of the device through the quick splicing between the supports 1 and the supports 1.

[0039] Combined with the attached Figure 5 , the slide rail assembly includes a slide rail body 3 and a splicing frame 301. The splicing frame 301 is slidably connected to the support 1 through the slide rail body 3. The splicing frame 301 is provided with a liftable positioning pin 302, and the positioning pin 302 is in plug-in limit fit with two adjacent supports 1.

[0040] Inside the splicing frame 301, there are a synchronous shaft 303, a threaded shaft 304, and a lifting rail 305. The positioning pins 302 of two adjacent supports 1 are connected by the synchronous shaft 303 in a transmission manner. The positioning pin 302 is rotatably connected to the threaded shaft 304 and is limited to the lifting rail 305. The threaded shaft 304 and the lifting rail 305 are connected by a threaded lifting connection. Both ends of the synchronous shaft 303 are provided with tapered threads, and the end of the threaded shaft 304 is provided with tapered threads adapted to the ends of the synchronous shaft 303. Inside the support 1, there is a groove for accommodating the splicing frame 301, and a limiting groove adapted to the positioning pin 302 is provided at the top of the groove. The cross-sectional shapes of the positioning pin 302 and the limiting groove are of an I-shaped structure.

[0041] When supporting the inner wall of the tunnel along the way, by activating the telescopic cylinder 202 at the center inside the support 1, since a plurality of guide rails 203 are respectively arranged at both ends inside the support 1 and the top plate 201 is limited by them, the top plate 201 can only slide vertically along the outer wall of the guide rail 203. When the outer wall of the telescopic end of the telescopic cylinder 202 drives the guide post 205 to move horizontally, one side of the top of the guide post 205 abuts against the inner wall of the inclined groove 204. This action enables the telescopic cylinder 202 to push the top plate 201 and the arch support 2 along the outer wall of the guide rail 203 through the guide post 205 and the inclined groove 204, so that the arch support 2 moves vertically upward to the top of the tunnel along the outer wall of the guide rail 203 and supports the inner wall of the tunnel. When assembling multiple devices, after placing the splicing frame 301 between two supports 1, the outer wall of one side of the splicing frame 301 is pushed into the support 1 by the slide rail body 3 at the bottom inside the support 1. When the inner wall of the support 1 abuts against the outer wall of the splicing frame 301, the motor 306 located on one side inside the splicing frame 301 is activated. Since a group of corresponding threaded shafts 304 are arranged at both ends of the top of the synchronous shaft 303, and the two ends of the top of the synchronous shaft 303 and one side of the bottom of the threaded shaft 304 are rotationally connected to each other through gear meshing. As the output end of the motor 306 rotates, at the same time, a plurality of lifting rails 305 are arranged on both sides inside the splicing frame 301. When the positioning pin 302 moves, it can only move vertically along the outer wall of the lifting rail 305. When a plurality of threaded shafts 304 on both sides inside the splicing frame 301 are simultaneously driven by the motor 306 and the synchronous shaft 303, the threaded shaft 304 simultaneously drives a plurality of positioning pins 302 on both sides inside the splicing frame 301 through the threads on its outer wall, making them move vertically upward along the outer wall of the lifting rail 305. After the positioning pins 302 are inserted into one side inside the support 1, multiple supports 1 are connected. Thus, through the tight connection between the threaded shaft 304 and the positioning pin 302, the device can quickly and accurately splice and fix between the supports 1, greatly improving the assembly efficiency between the devices. And through the quick splicing between the supports 1, the working efficiency of the operator is further increased, and the splicing time of the device is reduced.

[0042] Working principle: When supporting the inner wall of the tunnel along the way, by activating the telescopic cylinder 202 at the center inside the support 1. Since a plurality of guide rails 203 are respectively arranged at both ends inside the support 1 and are used to limit the top plate 201, the top plate 201 can only slide vertically along the outer wall of the guide rail 203. As the outer wall of the telescopic end of the telescopic cylinder 202 drives the guide post 205 to move horizontally, one side of the top of the guide post 205 abuts against the inner wall of the inclined groove 204. This action enables the telescopic cylinder 202 to push the top plate 201 and the arched support 2 along the outer wall of the guide rail 203 through the guide post 205 and the inclined groove 204, so that the arched support 2 moves vertically upward to the top of the tunnel along the outer wall of the guide rail 203 and supports the inner wall of the tunnel. When assembling multiple devices, after placing the splicing frame 301 between two supports 1, the outer wall of one side of the splicing frame 301 is pushed into the support 1 through the slide rail body 3 at the bottom end inside the support 1. When the inner wall of the support 1 abuts against the outer wall of the splicing frame 301, the motor 306 located on one side inside the splicing frame 301 is activated. Since a set of corresponding threaded shafts 304 are arranged at both ends of the top of the synchronous shaft 303 and the two ends of the top of the synchronous shaft 303 and the bottom side of the threaded shaft 304 are rotationally connected to each other through gear meshing. As the output end of the motor 306 rotates, at the same time, a plurality of lifting rails 305 are arranged on both sides inside the splicing frame 301. When the positioning pins 302 move, they can only move vertically along the outer wall of the lifting rails 305. When a plurality of threaded shafts 304 on both sides inside the splicing frame 301 are simultaneously driven by the motor 306 and the synchronous shaft 303, the threaded shafts 304 simultaneously drive a plurality of positioning pins 302 located on both sides inside the splicing frame 301 through the threads on their outer walls, so that they move vertically upward along the outer wall of the lifting rails 305 and insert the positioning pins 302 into one side inside the support 1 to connect multiple supports 1. Thus, through the tight connection between the threaded shafts 304 and the positioning pins 302, the device can quickly and accurately splice and fix between the supports 1 and the supports 1.

[0043] The above schematically describes the present invention and its implementation manners. This description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural manners and embodiments without creative work without departing from the creative purpose of the present invention, they shall fall within the protection scope of the present invention.

Claims

1. A rock and soil tunnel support device, characterized in that: include The support is provided with several parts, including a telescopic cylinder and a top plate, the output end of the telescopic cylinder is connected to a guide column, the top plate is provided with an oblique groove that slides with the guide column, and the top plate and the support are controlled to move up and down by the telescopic cylinder; An arch support fixedly connected to the top plate; The slide rail assembly comprises a slide rail body and a splicing frame, wherein the splicing frame is slidably connected to the support through the slide rail body, and a positioning pin capable of lifting and lowering is provided on the splicing frame, and the positioning pin is inserted and limitedly matched with two adjacent supports.

2. A geotechnical tunnel support device according to claim 1, characterized in that: A synchronous shaft, a threaded shaft and a lifting rail are provided in the splicing frame. The positioning pins located at two adjacent supports are connected through a synchronous shaft transmission. The positioning pins are rotatably connected to the threaded shaft and limited to the lifting rail. The threaded shaft and the lifting rail are connected through a threaded lifting connection.

3. A geotechnical tunnel support device according to claim 2, characterized in that: Both ends of the synchronous shaft are provided with tapered threads, and the end of the threaded shaft is provided with tapered threads matched with the end of the synchronous shaft.

4. A geotechnical tunnel support device according to claim 1, characterized in that: A groove for accommodating the splicing frame is provided inside the support, and a limiting groove matched with the positioning pin is provided on the top of the groove.

5. A geotechnical tunnel support device according to claim 4, characterized in that: The cross-sectional shape of the positioning pin and the limiting groove is an I-shaped structure.

6. A geotechnical tunnel support device according to claim 1, characterized in that: The telescopic cylinder is transversely fixed to the support.

7. A geotechnical tunnel support device according to claim 6, characterized in that: The surfaces of the guide pillar and the oblique groove are provided with an alloy coating.

8. A geotechnical tunnel support device according to claim 1, characterized in that: A plurality of guide rails are fixedly connected to both sides of the interior of the support, and the top plate is provided with guide grooves, and the guide rails are adapted to the guide grooves.

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