Tunnel construction protection device

Abstract

The present invention is applicable to the technical field of tunnel construction, and provides a tunnel construction protection device, including a supporting cross plate and a side support frame, the side support frames are arranged in pairs on both sides of the supporting cross plate, a guide sleeve is fixedly installed on the upper surface of the supporting cross plate, the free end of the guide sleeve is fixedly connected with an arc-shaped support plate, the longitudinal adjustment mechanism moves synchronously with the arc-shaped support plate when it is raised or lowered, the synchronous drive mechanism is connected to the movable vertical rod, the horizontal adjustment mechanism is arranged on both sides of the side support frame, the top end of the horizontal adjustment mechanism is transmission-connected with the synchronous drive mechanism, and moves synchronously with the synchronous drive mechanism during the rotation process, so as to adjust the position of the support protection; the protection device is convenient for supporting and protecting the inner wall of the tunnel from multiple directions, and has the characteristics of high stability during the support and protection process, can effectively avoid the loosening of the structure, and can prevent the occurrence of crushing during protection, thereby improving the safety of the protection device.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a tunnel construction protection device. Background Art

[0002] A tunnel is a type of transportation facility, usually an engineering building buried in the ground. It is a form of human use of underground space. During tunnel construction, in order to prevent tunnel accidents such as landslides, protective devices are often required to ensure construction safety. The existing protective devices can basically meet the use requirements of tunnel construction, but there are still some shortcomings that need to be improved. During tunnel construction, it is often carried out section by section, and protective devices need to be installed in each construction section. When a section is completed, the protective devices can be disassembled.

[0003] The protective device currently used controls the direction of the falling gravel by setting a guide frame. When the guide frame contacts the walls on both sides, the guide frame automatically squeezes the spring to achieve the purpose of unloading force. However, there is a problem of low support stability, which is prone to loosening, and it cannot provide protection from multiple directions, resulting in low safety of the protective device. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a tunnel construction protection device, aiming to solve the problems existing in the above-mentioned background technology.

[0005] The embodiment of the present invention is implemented as follows: a tunnel construction protection device includes a supporting horizontal plate and further includes: Side support frames, which are arranged in pairs on both sides of the supporting transverse plate, and the side support frames and the supporting transverse plate are connected by positioning pins and fixed by bolts; A guide sleeve rod, wherein the guide sleeve rod is fixedly mounted on the upper surface of the supporting horizontal plate, a free end of the guide sleeve rod is fixedly connected to an arc-shaped support plate, and an elastic support member is sleeved on the bottom of the guide sleeve rod at the arc-shaped support plate; A longitudinal adjustment mechanism, which is mounted on the guide sleeve and the arc support plate and moves synchronously with the arc support plate when it is raised or lowered; A synchronous drive mechanism, wherein the synchronous drive mechanism is arranged inside the supporting transverse plate, the free end of the synchronous drive mechanism is connected to the movable vertical rod in the longitudinal adjustment mechanism, and the synchronous drive mechanism is driven by a drive motor installed at the bottom end of the supporting transverse plate; The horizontal adjustment mechanism is arranged on both sides of the side support frame. The top end of the horizontal adjustment mechanism is transmission-connected with the synchronous drive mechanism and moves synchronously with the synchronous drive mechanism during rotation to adjust the position of the support protection.

[0006] Preferably, the longitudinal adjustment mechanism comprises a movable vertical rod, a limiting pile 1, a swing rod, a limiting groove 1, a limiting pile 2 and a limiting groove 2; The movable vertical rod is slidably mounted on the supporting horizontal plate, and a limiting pile 1 is fixedly mounted on the top of the movable vertical rod; The swing rod is hinged on both sides of the guide sleeve rod, and a limiting groove 1 is provided on the swing rod, and the limiting groove 1 is slidably connected with a limiting pile 1; A second limiting pile is also installed at the end of the swing rod, and the second limiting pile is slidably connected to a second limiting groove provided on the arc-shaped support plate.

[0007] Preferably, the synchronous drive mechanism comprises a one-way lead screw, a movable sleeve, a drive shaft and a bevel gear set; The one-way screw and the drive shaft are both rotatably mounted in the supporting horizontal plate, and the one-way screw and the drive shaft are connected via a bevel gear set. A movable sleeve 1 is also installed on the one-way lead screw, and the movable sleeve 1 is fixedly connected to the bottom end of the movable vertical rod, and a horizontal groove for the movable vertical rod to slide is opened on the supporting horizontal plate.

[0008] Preferably, the horizontal adjustment mechanism comprises an inner shell, a bidirectional driving screw, a second bevel gear set, a second movable sleeve, a movable rod, a first guide groove, a second guide groove and a support plate; The inner shell is installed on the inner side of the side support frame, and a bidirectional driving screw is rotatably installed in the inner shell. The bidirectional driving screw is connected to the unidirectional screw through the bevel gear set 2. The two ends of the bidirectional driving screw are respectively installed with movable sleeves 2, and the side of the movable sleeve 2 is hinged with a movable rod, and the free end of the movable rod is hinged with a support plate; A guide groove 1 for the movable rod to swing is provided on the side surface of the inner shell, and a guide groove 2 for the movable rod to move is provided on the side support frame.

[0009] Preferably, a T-shaped limit rod is fixedly installed on the inner side of the support plate, and the T-shaped limit rod is laterally slidably connected to the side support frame to control the extreme movement displacement of the support plate.

[0010] Preferably, a support is fixedly installed on the inner side of the side support frame, and the support is connected to the inner shell through a bracket; Wheels are rotatably mounted on the support to move the protective device inside the tunnel.

[0011] Preferably, a protective layer is bonded to the arc-shaped support plate and the working surface of the support plate to avoid damage to the inner wall of the tunnel during support.

[0012] A tunnel construction protection device provided by an embodiment of the present invention is convenient for supporting and protecting the inner wall of the tunnel from multiple directions. During the support and protection process, it has the characteristics of high stability, can effectively prevent the structure from loosening, and can prevent crushing during protection, thereby improving the safety of the protection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A three-dimensional structural diagram of a tunnel construction protection device provided by an embodiment of the present invention; Figure 2 for Figure 1 A partial enlarged view of the middle part; Figure 3 A schematic diagram of a partial structure of a synchronous drive mechanism in a tunnel construction protection device provided by an embodiment of the present invention; Figure 4 A schematic diagram of a partial structure of a horizontal adjustment mechanism in a tunnel construction protection device provided by an embodiment of the present invention; Figure 5 for Figure 1 A partial enlarged view of point B in the middle; In the attached drawings: 1-side support frame; 2-support cross plate; 3-locating pin; 4-bolt; 5-guide sleeve rod; 6-elastic support member; 7-arc support plate; 8-one-way screw; 9-movable sleeve one; 10-movable vertical rod; 11-limiting pile one; 12-rocker; 13-limiting groove one; 14-limiting pile two; 15-limiting groove two; 16-driving motor; 17-driving shaft; 18-bevel gear set one; 19-bracket; 20-inner shell; 21-bidirectional driving screw; 22-bevel gear set two; 23-movable sleeve two; 24-movable rod; 25-guide groove one; 26-guide groove two; 27-support plate; 28-T-type limiting rod; 29-support; 30-wheel; 31-horizontal groove; 100-longitudinal adjustment mechanism; 200-synchronous drive mechanism; 300-horizontal adjustment mechanism. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0015] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0016] like Figures 1 to 5As shown, it is a structural diagram of a tunnel construction protection device provided by an embodiment of the present invention, comprising a supporting transverse plate 2, a side supporting frame 1, a guide sleeve 5, a longitudinal adjustment mechanism 100, a synchronous drive mechanism 200 and a horizontal adjustment mechanism 300, wherein the side supporting frames 1 are arranged in pairs on both sides of the supporting transverse plate 2, and the side supporting frames 1 and the supporting transverse plate 2 are connected by positioning pins 3 and fixed by bolts 4; the guide sleeve 5 is fixedly installed on the upper surface of the supporting transverse plate 2, and the free end of the guide sleeve 5 is fixedly connected with an arc support plate 7, and an elastic support member 6 is sleeved on the bottom of the guide sleeve 5 located at the arc support plate 7; the longitudinal adjustment mechanism 100 is arranged It is installed on the guide sleeve rod 5 and the arc support plate 7, and moves synchronously with the arc support plate 7 when the arc support plate 7 is raised or lowered; the synchronous drive mechanism 200 is arranged inside the supporting cross plate 2, and the free end of the synchronous drive mechanism 200 is connected to the movable vertical rod 10 in the longitudinal adjustment mechanism 100, and the synchronous drive mechanism 200 is driven by the drive motor 16 installed at the bottom end of the supporting cross plate 2; the horizontal adjustment mechanism 300 is arranged on both sides of the side support frame 1, and the top end of the horizontal adjustment mechanism 300 is transmission-connected with the synchronous drive mechanism 200, and moves synchronously with the synchronous drive mechanism 200 during the rotation process to adjust the position of the support protection.

[0017] In one example of the present invention, a protective layer is bonded to the working surfaces of the arc support plate 7 and the support plate 27 to avoid damage to the inner wall of the tunnel during support; in addition, a support 29 is fixedly installed on the inner side of the side support frame 1, and the support 29 is connected to the inner shell 20 via a bracket 19; wheels 30 are rotatably installed on the support 29 for moving the protective device inside the tunnel to quickly deliver the protective device to a designated position.

[0018] like Figure 1 , Figure 2 and Figure 3 As shown, as a preferred embodiment of the present invention, the longitudinal adjustment mechanism 100 includes a movable vertical rod 10, a limiting pile 11, a swing rod 12, a limiting groove 13, a limiting pile 2 14 and a limiting groove 2 15; The movable vertical rod 10 is slidably mounted on the supporting horizontal plate 2, and a limit pile 11 is fixedly mounted on the top of the movable vertical rod 10; The swing rod 12 is hinged on both sides of the guide sleeve rod 5, and a limiting groove 13 is provided on the swing rod 12, and the limiting groove 13 is slidably connected with the limiting pile 11; A second limiting pile 14 is also installed at the end of the swing rod 12 , and the second limiting pile 14 is slidably connected to a second limiting groove 15 provided on the arc-shaped support plate 7 .

[0019] In one embodiment of the present invention, the accompanying drawings Figure 1As a reference, when the adjacent movable vertical rods 10 move away from each other to both sides, on the one hand, the movable vertical rod 10 slides along the horizontal groove 31, and on the other hand, the limit pile 11 on the top of the movable vertical rod 10 slides along the limit groove 13 provided on the swing rod 12, so that one end of the swing rod 12 swings along the guide sleeve 5. At the same time, the swing rod 12 also drives the limit pile 2 14 to slide along the limit groove 2 15 during the swinging process, thereby pushing the arc support plate 7 to slide along the guide sleeve 5. In this process, the elastic support member 6 is subjected to force and elastically deforms.

[0020] like Figure 1 and Figure 3 As shown, as another preferred embodiment of the present invention, the synchronous drive mechanism 200 includes a one-way screw 8, a movable sleeve 9, a drive shaft 17 and a bevel gear set 18; The one-way screw 8 and the drive shaft 17 are both rotatably mounted in the supporting cross plate 2, and the one-way screw 8 and the drive shaft 17 are connected via a bevel gear set 18; The one-way screw 8 is also provided with a movable sleeve 9 which is fixedly connected to the bottom end of the movable vertical rod 10 , and a horizontal groove 31 for the movable vertical rod 10 to slide is provided on the supporting cross plate 2 .

[0021] In one example of the present invention, the driving motor 16 is a forward and reverse motor and is electrically connected to a separately arranged controller. When the driving motor 16 is working, it drives the driving shaft 17 to rotate along the supporting cross plate 2 through the arranged coupling. The driving shaft 17 drives the one-way screws 8 on both sides to rotate synchronously through the bevel gear set 18, and adjusts the installation rotation direction of the one-way screw 8 as needed, so that when the one-way screw 8 rotates, the movable sleeve 9 and the movable vertical rod 10 installed thereon move in opposite directions.

[0022] like Figure 1 , Figure 4 and Figure 5 As shown, as another preferred embodiment of the present invention, the horizontal adjustment mechanism 300 includes an inner shell 20, a bidirectional driving screw 21, a second bevel gear set 22, a second movable sleeve 23, a movable rod 24, a first guide groove 25, a second guide groove 26 and a support plate 27; The inner shell 20 is installed on the inner side of the side support frame 1, and a bidirectional driving screw 21 is rotatably installed in the inner shell 20. The bidirectional driving screw 21 is connected to the one-way screw 8 through a bevel gear set 22. The two ends of the bidirectional driving screw 21 are respectively installed with a movable sleeve 23, and the side of the movable sleeve 23 is hinged with a movable rod 24, and the free end of the movable rod 24 is hinged with a support plate 27. The side surface of the inner shell 20 is provided with a guide groove 1 25 for the movable rod 24 to swing, and the side support frame 1 is provided with a guide groove 26 for the movable rod 24 to move.

[0023] In one example of the present invention, when the one-way screw 8 rotates along the inside of the supporting cross plate 2, it also drives the bidirectional driving screw 21 installed in the inner shell 20 to rotate synchronously through the bevel gear set 22 arranged at the end. In this state, the bidirectional driving screw 21 pushes the movable sleeve 23 to move in the inner shell 20, and drives the movable rod 24 at the corresponding position, so that the outer support plate 27 is close to or away from the side support frame 1. At the same time, the movable rod 24 also moves along the guide groove 1 25 and the guide groove 2 26.

[0024] like Figure 5 As shown, as another preferred embodiment of the present invention, a T-shaped limit rod 28 is fixedly installed on the inner side of the support plate 27, and the T-shaped limit rod 28 is laterally slidably connected to the side support frame 1 for controlling the extreme movement displacement of the support plate 27.

[0025] In one embodiment of the present invention, when the support plate 27 is close to or away from the side support frame 1, the T-shaped limit rod 28 slides horizontally along the side support frame 1, which not only maintains the stability of the support plate 27 movement, but also effectively prevents the support plate 27 from moving too far outward.

[0026] To sum up, in actual use, the supporting cross plate 2 is fixedly installed on the side supporting frames 1 on both sides by the arranged locating pins 3 and bolts 4. When protection is needed, the driving motor 16 uses a forward and reverse motor and is electrically connected to a separately arranged controller. When the driving motor 16 is working, it drives the driving shaft 17 to rotate along the supporting cross plate 2 through the arranged coupling. The driving shaft 17 drives the one-way screws 8 on both sides to rotate synchronously through the bevel gear set 18, and adjusts the installation rotation direction of the one-way screw 8 as needed, so that when the one-way screw 8 rotates, the movable sleeve 19 and the movable vertical rod 10 installed thereon move in opposite directions. When the adjacent movable vertical rods 10 move away from both sides, on the one hand, the movable vertical rod 10 slides along the horizontal groove 31, and on the other hand, the limit pile 11 at the top of the movable vertical rod 10 slides along the limit groove 13 opened on the swing rod 12, so that one end of the swing rod 12 swings along the guide sleeve rod 5. At the same time, the swing rod 12 also drives the limit pile 2 14 along the swinging process. The one-way screw 8 is driven by the two-way driving screw 21 installed in the inner shell 20 to rotate synchronously through the two-way driving screw 21 arranged at the end of the bevel gear set 22 while rotating along the inner support cross plate 2. In this state, the two-way driving screw 21 drives the movable sleeve 23 to move in the inner shell 20, and drives the movable rod 24 at the corresponding position, so that the outer support plate 27 is close to or away from the side support frame 1. At the same time, the movable rod 24 also moves along the guide groove 1 25 and the guide groove 2 26. When the support plate 27 is close to or away from the side support frame 1, the T-shaped limit rod 28 slides horizontally along the side support frame 1. The protective device is convenient for supporting and protecting the inner wall of the tunnel from multiple directions. In the process of supporting and protecting, it has the characteristics of high stability, can effectively avoid the loosening of the structure, and can prevent the occurrence of crushing during protection, so as to improve the safety of the protective device.

[0027] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A tunnel construction protection device, comprising a supporting horizontal plate, characterized in that: Also includes: Side support frames, which are arranged in pairs on both sides of the supporting transverse plate, and the side support frames and the supporting transverse plate are connected by positioning pins and fixed by bolts; A guide sleeve rod, wherein the guide sleeve rod is fixedly mounted on the upper surface of the supporting horizontal plate, a free end of the guide sleeve rod is fixedly connected to an arc-shaped support plate, and an elastic support member is sleeved on the bottom of the guide sleeve rod at the arc-shaped support plate; A longitudinal adjustment mechanism, which is mounted on the guide sleeve and the arc support plate and moves synchronously with the arc support plate when it is raised or lowered; A synchronous drive mechanism, wherein the synchronous drive mechanism is arranged inside the supporting transverse plate, the free end of the synchronous drive mechanism is connected to the movable vertical rod in the longitudinal adjustment mechanism, and the synchronous drive mechanism is driven by a drive motor installed at the bottom end of the supporting transverse plate; The horizontal adjustment mechanism is arranged on both sides of the side support frame. The top end of the horizontal adjustment mechanism is transmission-connected with the synchronous drive mechanism and moves synchronously with the synchronous drive mechanism during rotation to adjust the position of the support protection.

2. A tunnel construction protection device according to claim 1, characterized in that: The longitudinal adjustment mechanism comprises a movable vertical rod, a limiting pile 1, a swing rod, a limiting groove 1, a limiting pile 2 and a limiting groove 2; The movable vertical rod is slidably mounted on the supporting horizontal plate, and a limiting pile 1 is fixedly mounted on the top of the movable vertical rod; The swing rod is hinged on both sides of the guide sleeve rod, and a limiting groove 1 is provided on the swing rod, and the limiting groove 1 is slidably connected with a limiting pile 1; A second limiting pile is also installed at the end of the swing rod, and the second limiting pile is slidably connected to a second limiting groove provided on the arc-shaped support plate.

3. A tunnel construction protection device according to claim 2, characterized in that: The synchronous drive mechanism comprises a one-way lead screw, a movable sleeve, a drive shaft and a bevel gear set; The one-way screw and the drive shaft are both rotatably mounted in the supporting horizontal plate, and the one-way screw and the drive shaft are connected via a bevel gear set. A movable sleeve 1 is also installed on the one-way lead screw, and the movable sleeve 1 is fixedly connected to the bottom end of the movable vertical rod, and a horizontal groove for the movable vertical rod to slide is opened on the supporting horizontal plate.

4. A tunnel construction protection device according to claim 3, characterized in that: The horizontal adjustment mechanism comprises an inner shell, a bidirectional driving screw, a second bevel gear set, a second movable sleeve, a movable rod, a first guide groove, a second guide groove and a support plate; The inner shell is installed on the inner side of the side support frame, and a bidirectional driving screw is rotatably installed in the inner shell. The bidirectional driving screw is connected to the unidirectional screw through the bevel gear set 2. The two ends of the bidirectional driving screw are respectively installed with movable sleeves 2, and the side of the movable sleeve 2 is hinged with a movable rod, and the free end of the movable rod is hinged with a support plate; A guide groove 1 for the movable rod to swing is provided on the side surface of the inner shell, and a guide groove 2 for the movable rod to move is provided on the side support frame.

5. A tunnel construction protection device according to claim 4, characterized in that: A T-shaped limit rod is fixedly installed on the inner side of the support plate, and the T-shaped limit rod is connected to the side support frame in a transverse sliding manner to control the extreme movement displacement of the support plate.

6. A tunnel construction protection device according to claim 4, characterized in that: A support is fixedly installed on the inner side of the side support frame, and the support is connected to the inner shell through a bracket; Wheels are rotatably mounted on the support to move the protective device inside the tunnel.

7. A tunnel construction protection device according to claim 4, characterized in that: The arc-shaped support plate and the working surface of the support plate are bonded with a protective layer to avoid damaging the inner wall of the tunnel during support.

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