A portable tunnel support device

Abstract

This invention relates to the field of tunnel support and provides a portable tunnel support device. The portable tunnel support device includes: a support frame and rollers for controlling the movement of the support frame. A support platform is also provided on the support frame. The portable tunnel support device includes: a linkage support assembly disposed on the support frame and the support platform; a positioning assembly disposed on the support frame; and a drive assembly disposed on the support frame. When using this portable tunnel support device, the support frame is pushed to the working position using the rollers. Then, the linkage support assembly is driven to operate, and it gradually supports the top and sides of the tunnel inner wall. After the support work is completed, the linkage support assembly can no longer operate. At this time, the drive assembly automatically drives the positioning assembly to fix the rollers, preventing the support frame from moving during the support process and improving safety.

Description

Technical Field

[0001] This invention belongs to the field of tunnel support, and particularly relates to a tunnel support device that is easy to move. Background Technology

[0002] Tunnels are engineering structures buried in the earth's strata and are a form of human utilization of underground space. With the rapid development of the economy, highway and railway transportation have developed unprecedentedly. In order to shorten the distance and cross the terrain, various tunnels have been built in mountainous areas with complex terrain. However, during the tunnel construction process, tunnel support is required to prevent deformation or collapse of the surrounding rock.

[0003] Currently, during tunnel support, rollers are often installed at the bottom of the support device to facilitate its movement. However, while the pressure exerted on the inner wall can improve the stability of the rollers, the stability of the support device will be greatly reduced if the tunnel wall changes even slightly. The rollers may cause the support device to move, affecting the construction location and the support effect. Summary of the Invention

[0004] The purpose of this invention is to provide a movable tunnel support device, which addresses the current practice of adding rollers to the bottom of tunnel support devices to facilitate movement. While the pressure on the inner wall can improve the stability of the rollers, even slight changes in the tunnel wall can significantly reduce the stability of the support device. The rollers may then cause the support device to move, altering the construction location and affecting the support effect.

[0005] This invention is implemented as follows: a movable tunnel support device includes a support frame and rollers for controlling the movement of the support frame. The support frame is further provided with a support platform. The movable tunnel support device includes:

[0006] A linkage support assembly is provided on the bracket and the support platform. The linkage support assembly is used to gradually support the inner wall of the tunnel from the top to both sides.

[0007] A positioning component is disposed on the bracket and cooperates with the roller to clamp and fix the roller after the linkage support component performs the support operation on the inner wall of the tunnel.

[0008] A drive component is mounted on the bracket. The drive component is used to sense whether the linkage support component is in contact with the inner wall of the tunnel, and to control the positioning component to operate after contact.

[0009] As a further embodiment of the present invention, the linkage support assembly includes:

[0010] A first telescopic cylinder is mounted on the support platform, and a support plate is connected to the first telescopic cylinder.

[0011] The second telescopic cylinder is located on the side of the bracket, and the first support rod is connected to the second telescopic cylinder.

[0012] A fixed platform is mounted on the bracket, and a toothed column is slidably connected inside the fixed platform. A second guard rod is installed at one end of the toothed column.

[0013] As a further embodiment of the present invention, the positioning component includes:

[0014] A roller frame is mounted on the bracket, and the rollers are rotatably mounted on the roller frame;

[0015] A first slot is formed on the roller frame. A positioning post is provided inside the first slot. A threaded post is slidably connected to the positioning post. A fastening plate is installed at one end of the threaded post. The fastening plate cooperates with the roller.

[0016] As a further embodiment of the present invention, the driving component includes:

[0017] A first gear is rotatably mounted on the fixed platform, and the first gear meshes with the gear column.

[0018] A control cavity is disposed inside the bracket, and an internal gear ring is rotatably disposed inside the control cavity. A first transmission belt is sleeved between the internal gear ring and the first gear.

[0019] A rotating rod is rotatably disposed inside the control cavity. A drive motor is installed at one end of the rotating rod, and a second gear is connected to the output end of the drive motor. The second gear cooperates with the internal gear ring.

[0020] A spring, one end of which is mounted on the inner wall of the control cavity, and the other end of which is connected to the drive motor;

[0021] A transmission assembly, disposed on the bracket and roller frame, is used to transmit the rotation of the rotating rod to the threaded column.

[0022] As a further embodiment of the present invention, the connection between the rotating rod and the control cavity is on the same axis as the center of the internal gear ring.

[0023] As a further embodiment of the present invention, the spring tension that the rotating rod needs to overcome when rotating is greater than the resistance that the internal gear ring needs to overcome when driving the second gear to rotate.

[0024] As a further embodiment of the present invention, the transmission component includes:

[0025] A threaded collar is rotatably mounted on the first slot, and the threaded collar is threadedly engaged with the threaded column.

[0026] A rotating shaft is rotatably disposed inside the bracket, and a second transmission belt is sleeved between the rotating shaft and the threaded collar. A first bevel gear is disposed on the rotating shaft.

[0027] The second bevel gear is rotatably disposed inside the bracket. The second bevel gear meshes with the first bevel gear. A third transmission belt is sleeved between the connection of the rotating rod and the second bevel gear.

[0028] The tunnel support device that is easy to move provided in this embodiment of the invention has the following beneficial effects:

[0029] When using this easily movable tunnel support device, the support is pushed to the working position by the rollers, and then the linkage support component is driven to operate. The linkage support component will gradually support the top and sides of the tunnel inner wall. After the support work is completed, the linkage support component will no longer be able to operate. At this time, the drive component will automatically drive the positioning component to operate and fix the rollers to prevent the support from moving during the support process, thereby improving the safety of use. Attached Figure Description

[0030] Figure 1 A schematic diagram of a movable tunnel support device provided in an embodiment of the present invention;

[0031] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0032] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0033] Figure 4 for Figure 1 Enlarged view of point C in the middle;

[0034] Figure 5 for Figure 1 Enlarged view of point D in the middle.

[0035] In the attached diagram: 1-Bracket; 2-Roller; 3-Support; 4-Linkage support assembly; 41-First telescopic cylinder; 42-Support plate; 43-Second telescopic cylinder; 44-First support rod; 45-Fixed platform; 46-Gear column; 47-Second support rod; 5-Positioning assembly; 51-Roller frame; 52-First slot; 53-Positioning column; 54-Threaded column; 55-Fastening plate; 6-Drive assembly; 61-First gear; 62-Control cavity; 63-Internal gear ring; 64-First transmission belt; 65-Rotating rod; 66-Drive motor; 67-Second gear; 68-Spring; 69-Threaded collar; 610-Rotating shaft; 611-Second transmission belt; 612-First bevel gear; 613-Second bevel gear; 614-Third transmission belt. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this invention clearer, the invention 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 merely illustrative and not intended to limit the invention.

[0037] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0038] like Figure 1 As shown in this embodiment of the invention, a movable tunnel support device includes: a support 1 and rollers 2 for controlling the movement of the support 1. The support 1 is also provided with a support platform 3. The movable tunnel support device includes:

[0039] Linkage support assembly 4 is installed on the bracket 1 and the support platform 3. The linkage support assembly 4 is used to gradually support the inner wall of the tunnel from the top to both sides.

[0040] The positioning component 5 is disposed on the bracket 1 and cooperates with the roller 2. It is used to clamp and fix the roller 2 after the linkage support component 4 performs the support operation on the inner wall of the tunnel.

[0041] The drive component 6 is disposed on the bracket 1. The drive component 6 is used to sense whether the linkage support component 4 is in contact with the inner wall of the tunnel, and to control the positioning component 5 to operate after contact.

[0042] When using this easily movable tunnel support device, the support 1 is pushed to the working position by the rollers 2, and then the linkage support component 4 is driven to operate. The linkage support component 4 will gradually support the top and sides of the tunnel inner wall. After the support work is completed, the linkage support component 4 will no longer be able to operate. At this time, the drive component 6 will automatically drive the positioning component 5 to operate and fix the rollers 2, preventing the support 1 from moving during the support process and improving the safety of use.

[0043] like Figures 1 to 5 As shown, in this embodiment of the invention, the linkage support assembly 4 includes:

[0044] A first telescopic cylinder 41 is mounted on the support 3, and a support plate 42 is connected to the first telescopic cylinder 41.

[0045] The second telescopic cylinder 43 is disposed on the side of the bracket 1, and the first support rod 44 is connected to the second telescopic cylinder 43.

[0046] A fixed platform 45 is installed on the bracket 1. A toothed column 46 is slidably connected inside the fixed platform 45, and a second support rod 47 is installed at one end of the toothed column 46.

[0047] In use, the first telescopic cylinder 41 is activated first, which will cause the support plate 42 to move upward until it contacts the top of the tunnel. At this point, the first telescopic cylinder 41 will stop operating. Then, the second telescopic cylinder 43 is activated, which will control the first support rod 44 to move to both sides until it contacts the tunnel walls on both sides, thus providing lateral support. Then, the toothed column 46 can be moved by the drive assembly 6 until the second support rod 47 contacts the tunnel sidewall, thus achieving the full support effect.

[0048] like Figures 1 to 5 As shown, in this embodiment of the invention, the positioning component 5 includes:

[0049] A roller frame 51 is mounted on the bracket 1, and the roller 2 is rotatably mounted on the roller frame 51;

[0050] A first slot 52 is formed on the roller frame 51. A positioning post 53 is provided inside the first slot 52. A threaded post 54 is slidably connected to the positioning post 53. A fastening plate 55 is installed at one end of the threaded post 54. The fastening plate 55 cooperates with the roller 2.

[0051] like Figures 1 to 5 As shown, in this embodiment of the invention, the driving component 6 includes:

[0052] The first gear 61 is rotatably mounted on the fixed platform 45, and the first gear 61 meshes with the gear column 46.

[0053] A control cavity 62 is disposed inside the bracket 1. An internal gear ring 63 is rotatably disposed inside the control cavity 62. A first transmission belt 64 is sleeved between the internal gear ring 63 and the first gear 61.

[0054] A rotating rod 65 is rotatably disposed inside the control cavity 62. A drive motor 66 is installed at one end of the rotating rod 65. A second gear 67 is connected to the output end of the drive motor 66. The second gear 67 cooperates with the internal gear ring 63.

[0055] A spring 68 is mounted at one end on the inner wall of the control cavity 62, and the other end of the spring 68 is connected to the drive motor 66;

[0056] A transmission assembly is disposed on the bracket 1 and the roller frame 51, and the transmission assembly is used to transmit the rotation of the rotating rod 65 to the threaded column 54.

[0057] In this embodiment of the invention, the connection between the rotating rod 65 and the control cavity 62 is on the same axis as the center of the internal gear ring 63.

[0058] In this embodiment of the invention, the tension of the spring 68 that the rotating rod 65 needs to overcome when rotating is greater than the resistance that the internal gear ring 63 needs to overcome when driving the second gear 67 to rotate.

[0059] like Figures 1 to 5 As shown, in this embodiment of the invention, the transmission component includes:

[0060] A threaded collar 69 is rotatably mounted on the first slot 52, and the threaded collar 69 is threadedly engaged with the threaded post 54.

[0061] A rotating shaft 610 is rotatably disposed inside the bracket 1. A second transmission belt 611 is sleeved between the rotating shaft 610 and the threaded collar 69. A first bevel gear 612 is disposed on the rotating shaft 610.

[0062] The second bevel gear 613 is rotatably disposed inside the bracket 1. The second bevel gear 613 meshes with the first bevel gear 612. A third transmission belt 614 is sleeved between the connection of the rotating rod 65 and the second bevel gear 613.

[0063] In use, since the tension of the spring 68 that the rotating rod 65 needs to overcome when rotating is greater than the resistance that the internal gear ring 63 needs to overcome when driving the second gear 67 to rotate, the drive motor 66 will first drive the internal gear ring 63 to rotate through the second gear 67, and then drive the first gear 61 to rotate through the first transmission belt 64. At this time, the first gear 61 can control the movement of the toothed column 46 until the toothed column 46 can no longer move.

[0064] When the toothed column 46 can no longer move, the internal toothed ring 63 will also be unable to rotate. At this time, the rotation of the second gear 67 will drive the rotating rod 65 to start rotating, and drive the second bevel gear 613 to rotate through the third transmission belt 614. Then, the first bevel gear 612 controls the rotation of the rotating shaft 610. The second transmission belt 611 drives the threaded collar 69 to rotate, thereby controlling the movement of the threaded column 54, so that the fastening plate 55 contacts the roller 2, realizing the limiting work of the roller 2.

[0065] In summary, when using this easily movable tunnel support device, the support 1 is pushed to the working position via the rollers 2, and then the linkage support assembly 4 is driven to operate. The linkage support assembly 4 will gradually support the top and sides of the tunnel inner wall. After the support work is completed, the linkage support assembly 4 will no longer be able to operate. At this time, the drive assembly 6 will automatically drive the positioning assembly 5 to operate and fix the rollers 2, preventing the support 1 from moving during the support process and improving the safety of use.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A portable tunnel support device, comprising: The support (1) and rollers (2) for controlling the movement of the support (1), wherein the support (1) is also provided with a support platform (3), characterized in that the easily movable tunnel support device comprises: Linkage support assembly (4) is installed on the bracket (1) and the support platform (3). The linkage support assembly (4) is used to gradually support the inner wall of the tunnel from the top to both sides. The positioning component (5) is set on the bracket (1) and cooperates with the roller (2) to clamp and fix the roller (2) after the linkage support component (4) performs the support operation on the inner wall of the tunnel; The drive component (6) is mounted on the bracket (1). The drive component (6) is used to sense whether the linkage support component (4) is in contact with the tunnel wall and to control the positioning component (5) to operate after contact. The linkage support assembly (4) includes: The first telescopic cylinder (41) is mounted on the support (3), and a support plate (42) is connected to the first telescopic cylinder (41). The second telescopic cylinder (43) is located on the side of the bracket (1), and the first support rod (44) is connected to the second telescopic cylinder (43). A fixed platform (45) is installed on the bracket (1). A toothed column (46) is slidably connected inside the fixed platform (45). A second guard rod (47) is installed at one end of the toothed column (46). The positioning component (5) includes: A roller frame (51) is mounted on the bracket (1), and the roller (2) is rotatably mounted on the roller frame (51); The first slot (52) is opened on the roller frame (51). A positioning post (53) is provided inside the first slot (52). A threaded post (54) is slidably connected on the positioning post (53). A fastening plate (55) is installed at one end of the threaded post (54). The fastening plate (55) cooperates with the roller (2). The driving component (6) includes: The first gear (61) is rotatably mounted on the fixed platform (45), and the first gear (61) meshes with the gear column (46); A control cavity (62) is located inside the bracket (1). An internal gear ring (63) is rotatably disposed inside the control cavity (62). A first transmission belt (64) is sleeved between the internal gear ring (63) and the first gear (61). A rotating rod (65) is rotatably disposed inside the control cavity (62). A drive motor (66) is installed at one end of the rotating rod (65). A second gear (67) is connected to the output end of the drive motor (66). The second gear (67) cooperates with the internal gear ring (63). The connection between the rotating rod (65) and the control cavity (62) is on the same axis as the center of the internal gear ring (63); A spring (68) is installed at one end on the inner wall of the control cavity (62), and the other end of the spring (68) is connected to the drive motor (66); The spring force (68) that the rotating rod (65) needs to overcome when it rotates is greater than the resistance that the internal gear ring (63) needs to overcome when it drives the second gear (67) to rotate. A transmission assembly is disposed on the bracket (1) and the roller frame (51), the transmission assembly being used to transmit the rotation of the rotating rod (65) to the threaded column (54).

2. The easily movable tunnel support device according to claim 1, characterized in that, The transmission component includes: A threaded collar (69) is rotatably mounted on the first slot (52), and the threaded collar (69) is threadedly engaged with the threaded post (54); A rotating shaft (610) is rotatably disposed inside the bracket (1). A second transmission belt (611) is sleeved between the rotating shaft (610) and the threaded collar (69). A first bevel gear (612) is disposed on the rotating shaft (610). The second bevel gear (613) is rotatably disposed inside the bracket (1). The second bevel gear (613) meshes with the first bevel gear (612). A third transmission belt (614) is sleeved between the connection of the rotating rod (65) and the second bevel gear (613).

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