A support and protection device for tunnel construction

Abstract

The present invention is applicable to the field of supporting and protecting devices, and provides a supporting and protecting device for tunnel construction, comprising a base, and also comprising: a horizontal protecting mechanism, wherein the horizontal protecting mechanism comprises a baffle, wherein the baffle is connected with a propulsion mechanism and a supporting and protecting assembly; a vertical supporting mechanism, comprising a top supporting mechanism and a lifting mechanism, wherein the top supporting mechanism is used for supporting a tunnel top surface with an irregular shape, and by adjusting its own supporting height, the top supporting mechanism is contacted and supported with tunnel top surfaces at multiple locations with different heights; the top supporting mechanism is contacted and supported with the tunnel top surface by adjusting the supporting height; the lifting mechanism is fixedly connected with the top supporting mechanism, and the lifting mechanism is used for driving the top supporting mechanism to be lifted and lowered, and the lifting mechanism is transmission-connected with the horizontal protecting mechanism; the entire tunnel side wall and top surface are fully supported by the cooperation of the horizontal protecting mechanism and the top supporting mechanism, thereby effectively avoiding local collapse of the tunnel and increasing the safety of tunnel construction.

Description

Technical Field

[0001] The invention belongs to the field of supporting and protecting devices, and in particular relates to a supporting and protecting device for tunnel construction. Background Art

[0002] A tunnel is a structure built underground, underwater or in a mountain to lay a railway or build a road for motor vehicles to pass through. According to its location, it can be divided into three categories: mountain tunnels, underwater tunnels and urban tunnels.

[0003] The existing tunnel support and protection devices are indispensable in tunnel construction. The baffles are often used to support and protect the local stress-bearing parts. The supporting surface is small. In addition, due to the uneven wall surface inside the tunnel, the contact area between the baffles and the wall surface is further reduced, resulting in insufficient supporting force. In order to avoid the above technical problems, it is necessary to provide a support and protection device for tunnel construction to overcome the above defects in the prior art. Summary of the invention

[0004] The purpose of the embodiment of the present invention is to provide a support and protection device for tunnel construction, aiming to solve the problem that the existing tunnel support and protection device has a small support surface, a small contact area between the baffle and the wall, and insufficient supporting force.

[0005] The embodiment of the present invention is implemented as follows: a supporting and protecting device for tunnel construction includes a base and further includes:

[0006] The horizontal protection mechanism comprises a baffle, the baffle is connected to a propulsion mechanism and a support and protection assembly, the propulsion mechanism is connected to a base, the propulsion mechanism is used to push the baffle to support the tunnel side wall, the support and protection assembly is connected to the propulsion mechanism, and the support and protection assembly is used to horizontally reinforce the baffle;

[0007] The vertical support mechanism includes a top support mechanism and a lifting mechanism. When the top support mechanism is used to support the tunnel top surface with irregular shape, it can contact and support the tunnel top surfaces at multiple different heights by adjusting its own support height; the lifting mechanism is fixedly connected to the top support mechanism, and the lifting mechanism is used to drive the top support mechanism to rise and fall. The lifting mechanism is connected to the horizontal protection mechanism in a transmission manner.

[0008] According to a further technical solution, the lifting mechanism comprises:

[0009] A vertical moving component is connected to a moving seat, the moving seat is fixedly connected to the top support mechanism, and the vertical moving component is used to drive the top support mechanism to rise and fall through the moving seat.

[0010] A further technical solution, the lifting mechanism includes: the propulsion mechanism includes a motor, the motor is fixedly connected to the base, the output shaft of the motor is fixedly connected to a rotating shaft, a first thread segment is provided on the outer wall of the rotating shaft, the first thread segment is two sections of threads in opposite directions, the two sections of the thread of the first thread segment are respectively threadedly connected to two push plates, the two push plates are both slidably connected to the slide groove on the base, and each push plate is fixedly connected to a baffle through a fixing rod.

[0011] According to a further technical solution, the supporting and protecting assembly includes a threaded shaft having two threaded sections with the same rotation direction as the first threaded section, two push plates are threadedly connected to the threaded shaft, and a transmission assembly is provided between the threaded shaft and the rotating shaft for making the threaded shaft and the rotating shaft rotate synchronously.

[0012] A further technical solution is that the vertical moving assembly is a scissor assembly, and the two side ends of the scissor assembly are respectively connected with sliders for driving the scissor assembly to move and retract, wherein the two sliders on one side are slidably connected to the moving seat, and a second thread segment is provided on the outer wall of the rotating shaft, and the second thread segment is provided in the middle of the first thread segment, and the two thread segments in the second thread segment are respectively opposite to the spiral directions of the two thread segments in the adjacent first thread segment, and the two sliders on the other side are respectively threadedly connected with the two thread segments in the second thread segment, and a support assembly for balancing and supporting the moving seat is provided on one side of the rotating rod.

[0013] According to a further technical solution, the support assembly includes a connecting rod, the side end surface of each push plate is rotatably connected to a connecting rod, the side end surface of each push plate is rotatably connected to one end of a connecting rod, the other end of each connecting rod is rotatably connected to a support, and the supports are slidably connected to the movable seat.

[0014] A further technical solution is that the top support mechanism includes a middle top support assembly and a side end support assembly, the upper end surface of the movable seat is fixedly connected to the end seat, the middle top support assembly and the side end support assembly are connected to the end seat, and the middle top support assembly and the side end support assembly respectively support the middle and both ends of the tunnel top surface.

[0015] A further technical solution is that the middle top support assembly includes a first top plate, a gear is rotatably connected in the end seat, two racks are arranged opposite to each other on both sides of the gear, the racks are meshed with the gear for transmission, the two racks are slidably connected to the end seat, and one end of each rack is fixedly connected to a first top plate.

[0016] A further technical solution is that the side end support assembly includes support rods, all of which are slidably connected to the end seat, a plurality of arc guide rails are provided in the end seat, a plurality of ball bearings are rollingly connected in the arc guide rails, a support rod is inserted into one end of each arc guide rail, and a second top plate is fixedly connected to one end of each support rod away from the end seat.

[0017] According to a further technical solution, the scissor lift assembly includes rotating rods, and the rotating rods are arranged in groups of two, and the two rotating rods in each group are cross-rotatingly connected, and each two adjacent groups of rotating rods are rotationally connected.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] A support and protection device for tunnel construction provided by an embodiment of the present invention supports the tunnel side walls on both sides by pushing the baffle plate to move relative to each other through a propulsion mechanism, and at the same time, the propulsion mechanism is reinforced by the support and protection assembly, thereby increasing the horizontal support force of the support and protection device for tunnel construction, and at the same time, the propulsion mechanism drives the lifting mechanism to rise, and the lifting mechanism drives the top support mechanism to support the tunnel top surface. When the top support mechanism contacts the irregular tunnel top surface, the top support mechanism adjusts its own support height to contact and support the tunnel top surface at different heights, thereby increasing the contact area between the top support mechanism and the tunnel top surface and increasing the supporting force; the entire tunnel side walls and top surface are fully supported by the cooperation of the horizontal protection mechanism and the top support mechanism, which can effectively avoid local collapse of the tunnel and increase the safety of tunnel construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of the A area in the middle;

[0022] Figure 3 It is a schematic diagram of the connection between the baffle plate and the push plate in the present invention;

[0023] Figure 4 It is a schematic diagram of the connection between the first top plate and the rack in the present invention.

[0024] In the accompanying drawings: base 1, baffle 2, moving seat 3, motor 4, rotating shaft 5, rotating rod 6, slider 7, push plate 8, threaded shaft 9, connecting rod 10, support 11, first top plate 12, end seat 13, gear 14, rack 15, belt drive pair 16, support rod 17, arc track 18, second top plate 19, first thread segment 20, second thread segment 21. DETAILED DESCRIPTION

[0025] 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.

[0026] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0027] like Figure 1 As shown, a supporting and protecting device for tunnel construction provided by the present invention includes a base 1 and also includes:

[0028] The horizontal protection mechanism comprises a baffle 2, the baffle 2 is connected with a propulsion mechanism and a support and protection assembly, the propulsion mechanism is connected with the base 1, the propulsion mechanism is used to push the baffle 2 to support the tunnel side wall, the support and protection assembly is connected with the propulsion mechanism, and the support and protection assembly is used to horizontally reinforce the baffle 2;

[0029] The vertical support mechanism includes a top support mechanism and a lifting mechanism. When the top support mechanism is used to support the top surface of a tunnel with irregular shape, it can contact and support the top surfaces of tunnels at multiple different heights by adjusting its own support height; the lifting mechanism is fixedly connected to the top support mechanism, and the lifting mechanism is used to drive the top support mechanism to move up and down. The lifting mechanism is connected to the horizontal protection mechanism in a transmission manner;

[0030] This support and protection device for tunnel construction uses a propulsion mechanism to push the baffle 2 to move relative to both sides to support the tunnel side walls on both sides, and at the same time, the propulsion mechanism is reinforced by the support and protection components, thereby increasing the horizontal support force of this support and protection device for tunnel construction. At the same time, the propulsion mechanism drives the lifting mechanism to rise, and the lifting mechanism drives the top support mechanism to support the tunnel top surface. When the top support mechanism contacts the irregular tunnel top surface, the top support mechanism adjusts its own support height to contact and support the tunnel top surfaces of different heights, thereby increasing the contact area between the top support mechanism and the tunnel top surface and increasing the supporting force; the entire tunnel side walls and top surface are fully supported through the cooperation of the horizontal protection mechanism and the top support mechanism, which can effectively avoid local collapse of the tunnel and increase the safety of tunnel construction.

[0031] In the embodiment of the present invention, Figure 1 As shown, as a preferred embodiment of the present invention, the lifting mechanism includes:

[0032] A vertical moving component is connected to a moving seat 3, and the moving seat 3 is fixedly connected to the top support mechanism. The vertical moving component is used to drive the top support mechanism to rise and fall through the moving seat 3, and the top support mechanism is lifted and lowered through the vertical moving component, thereby supporting the top surface of the tunnel.

[0033] In the embodiment of the present invention, the propulsion mechanism may be a hydraulic push rod connected between two push plates 8, such as Figure 1 and Figure 3 As shown, as a preferred embodiment of the present invention, the propulsion mechanism includes a motor 4, the motor 4 is fixedly connected to the base 1, the output shaft of the motor 4 is fixedly connected to the rotating shaft 5, and a first threaded section 20 is arranged on the outer wall of the rotating shaft 5, the first threaded section 20 is two sections of threads in opposite directions, and the two sections of threads of the first threaded section 20 are respectively threadedly connected to two push plates 8, and the two push plates 8 are both slidably connected to the slide groove on the base 1, and each push plate 8 is fixedly connected to a baffle 2 through a fixed rod; the motor 4 drives the rotating shaft 5 to which it is fixed to rotate, and the two sections of threads of the first threaded section 20 on the rotating shaft 5 with opposite rotation directions are respectively threadedly connected to the two push plates 8, so the rotating shaft 5 drives the two push plates 8 to move toward each other in the slide groove of the base 1, so the two push plates 8 respectively push the baffle 2 to which they are fixed to move horizontally to support the side wall of the tunnel.

[0034] In the embodiment of the present invention, the transmission assembly can be a chain transmission pair or a belt transmission pair connected between the threaded shaft 9 and the rotating shaft 5. As a preferred embodiment of the present invention, Figure 1 As shown, the supporting and protecting assembly includes a threaded shaft 9, on which are arranged two sections of threads having the same rotation direction as the first threaded section 20, and two push plates 8 are both threadedly connected to the threaded shaft 9, and a transmission connection is provided between the threaded shaft 9 and the rotating shaft 5, for enabling the threaded shaft 9 and the rotating shaft 5 to rotate synchronously with each other via a belt transmission pair 16; when the rotating shaft 5 rotates, the rotating shaft 5 drives the threaded shaft 9 to rotate via the belt transmission pair 16, and the threaded shaft 9 is provided with two sections of threads having the same rotation direction as the first threaded section 20, so the two push plates 8 move relative to each other on the threaded shaft 9, and the stability of the push plates 8 is increased by the cooperation between the rotating shaft 5 and the threaded shaft 9, thereby increasing the stability of the baffle 2.

[0035] In the embodiment of the present invention, the vertical moving assembly can be a threaded lifting mechanism and a hydraulic pushing mechanism. As a preferred embodiment of the present invention, Figure 1As shown, the vertical moving assembly includes a scissor assembly, and the two side ends of the scissor assembly are respectively connected with sliders for driving the scissor assembly to move and retract, wherein the two sliders 7 on one side are slidably connected with the moving seat 3, and a second thread segment 21 is provided on the outer wall of the rotating shaft 5, and the second thread segment 21 is arranged in the middle of the first thread segment 20, and the two sections of thread in the second thread segment 21 are respectively opposite to the two sections of thread in the adjacent first thread segment 20 in spiral direction, and the two sliders 7 on the other side are respectively threadedly connected with the two sections of thread in the second thread segment 21, and one side of the rotating rod 6 is provided with a support assembly for balancing and supporting the moving seat 3; when the rotating shaft 5 rotates, the rotating shaft 5 drives the two sliders 7 threadedly connected to it through the second thread segment 21 to move relative to each other, and the two sliders 7 respectively drive the scissor assemblies connected to it in rotation to move relative to each other, so the scissor assembly pushes the moving seat 3 to lift and lower, effectively improving the lifting and lowering rate of the supporting mechanism, thereby improving the support efficiency.

[0036] In the embodiment of the present invention, Figure 1 As shown, as a preferred embodiment of the present invention, the support assembly includes a connecting rod 10, the side end surface of each push plate 8 is rotatably connected to one end of a connecting rod 10, and the other end of each connecting rod 10 is rotatably connected to a support 11, and the supports 11 are slidably connected to the moving seat 3; when the moving seat 3 is raised upward, the supports 11 connected to one end of the two connecting rods 10 slide relatively in the moving seat 3, thereby supporting both sides of the moving seat 3 through the connecting rod 10.

[0037] In the embodiment of the present invention, the supporting mechanism can be a plurality of supporting columns cooperating with springs, such as Figure 1 As shown, as a preferred embodiment of the present invention, the top support mechanism includes a middle top support assembly and a side end support assembly, the upper end surface of the movable seat 3 is fixedly connected with the end seat 13, the middle top support assembly and the side end support assembly are connected to the end seat 13, and the middle top support assembly and the side end support assembly respectively support the middle and both ends of the tunnel top surface.

[0038] In the embodiment of the present invention, Figures 1-2As shown, as a preferred embodiment of the present invention, the middle top support assembly includes a first top plate 12, a gear 14 is rotatably connected in the end seat 13, two racks 15 are arranged on both sides of the gear 14, the racks 15 are meshed with the gear 14 for transmission, the two racks 15 are slidably connected to the end seat 13, and one end of each rack 15 is fixedly connected to a first top plate 12; when the first top plate 12 connected by a rack 15 contacts the top surface of the tunnel, the lifting mechanism pushes the rack 15 to mesh with the gear 14 for transmission, so the rotation of the gear 14 drives the other rack 15 to continue to move upward until the first top plates 12 connected by the two racks 15 contact the top surface of the tunnel, thereby achieving full contact between the two first top plates 12 and the top surface of the tunnel, thereby improving the supporting force of the middle support assembly.

[0039] In the embodiment of the present invention, Figure 1 As shown, as a preferred embodiment of the present invention, the side end support assembly includes a support rod 17, all of which are slidably connected to the end seat 13, a plurality of arc guide rails 18 are arranged in the end seat 13, a plurality of balls are rollingly connected in the arc guide rails 18, one end of each arc guide rail 18 is plugged with a support rod 17, and the end of each support rod 17 away from the end seat 13 is fixedly connected to a second top plate 19; when a second top plate 19 contacts the top surface of the tunnel, the support rod 17 connected to the second top plate 19 pushes all the balls to slide in the arc guide rail 18, so all the balls push the other second top plate 19 on the upper end of the support rod 17 at the other end of the arc guide rail 18 to contact the top surface of the tunnel, thereby realizing the support of the two second top plates 19 at both ends of each arc guide rail 18 for the top surfaces of tunnels at different heights.

[0040] In the embodiment of the present invention, Figure 1 As shown, as a preferred embodiment of the present invention, the scissor lift assembly includes rotating rods 6, and the rotating rods 6 are grouped in pairs. The two rotating rods 6 in each group are cross-rotatingly connected, and every two adjacent groups of rotating rods 6 are rotationally connected. The two sliders 7 respectively drive the rotating rods 6 to which they are rotationally connected to move relative to each other. Since every two adjacent groups of rotating rods 6 are rotationally connected, all the rotating rods 6 move relative to each other, so all the rotating rods 6 simultaneously push the moving seat 3 to move up and down, which effectively improves the lifting and lowering rate of the supporting mechanism.

[0041] This support and protection device for tunnel construction uses a propulsion mechanism to push the baffle 2 to move relative to both sides to support the tunnel side walls on both sides, and at the same time, the propulsion mechanism is reinforced by the support and protection assembly, thereby increasing the horizontal support force of this support and protection device for tunnel construction. At the same time, the propulsion mechanism drives the lifting mechanism to rise, and the lifting mechanism drives the top support mechanism to support the tunnel top surface. When the top support mechanism contacts the irregular tunnel top surface, the top support mechanism adjusts its own support height to contact and support the tunnel top surfaces at different heights, thereby increasing the contact area between the top support mechanism and the tunnel top surface and increasing the support force; in the top support mechanism, when a first top plate 12 connected by a rack 15 contacts the tunnel top surface, the lifting mechanism pushes the rack 15 to mesh with the gear 14 for transmission, so the gear 14 rotates to drive the other rack 15 to continue to move upward until the first top plates 12 connected by the two racks 15 contact the tunnel top surface, thereby achieving full contact between the two first top plates 12 and the tunnel top surface, and improving the support force of the middle support assembly.

[0042] 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 in the protection scope of the present invention.

[0043] 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 supporting and protecting device for tunnel construction, comprising a base, characterized in that: Also includes: The horizontal protection mechanism comprises a baffle, the baffle is connected to a propulsion mechanism and a support and protection assembly, the propulsion mechanism is connected to a base, the propulsion mechanism is used to push the baffle to support the tunnel side wall, the support and protection assembly is connected to the propulsion mechanism, and the support and protection assembly is used to horizontally reinforce the baffle; The vertical support mechanism includes a top support mechanism and a lifting mechanism. The top support mechanism is used to support the top surface of a tunnel with irregular shape by adjusting its own support height to contact and support the top surfaces of tunnels at multiple different heights. The lifting mechanism is fixedly connected to the supporting mechanism, the lifting mechanism is used to drive the supporting mechanism to lift, and the lifting mechanism is transmission-connected to the horizontal protection mechanism; The lifting mechanism comprises: A vertical moving assembly, wherein the vertical moving assembly is connected to a moving seat, the moving seat is fixedly connected to the top support mechanism, and the vertical moving assembly is used to drive the top support mechanism to move up and down through the moving seat; The top support mechanism includes a middle top support assembly and a side end support assembly, the upper end surface of the movable seat is fixedly connected with an end seat, the middle top support assembly and the side end support assembly are connected to the end seat, and the middle top support assembly and the side end support assembly respectively support the middle and both ends of the tunnel top surface; The middle top support assembly includes a first top plate, a gear is rotatably connected in the end seat, two racks are arranged opposite to each other on both sides of the gear, the racks are meshed with the gear for transmission, the two racks are slidably connected to the end seat, and one end of each rack is fixedly connected to a first top plate; The side end support assembly includes support rods, all of which are slidably connected to the end seat, a plurality of arc guide rails are provided in the end seat, a plurality of ball bearings are rollingly connected in the arc guide rails, a support rod is inserted into one end of each arc guide rail, and a second top plate is fixedly connected to one end of each support rod away from the end seat.

2. The support and protection device for tunnel construction according to claim 1, characterized in that: The propulsion mechanism includes a motor, the output shaft of the motor is fixedly connected to a rotating shaft, a first thread section is provided on the outer wall of the rotating shaft, the first thread section is two sections of threads in opposite directions, the two sections of threads of the first thread section are respectively threadedly connected to two push plates, the two push plates are both slidably connected to the slide grooves on the base, and each push plate is fixedly connected to a baffle plate through a fixing rod.

3. The support and protection device for tunnel construction according to claim 2, characterized in that: The supporting and protecting assembly comprises a threaded shaft, on which are arranged two sections of thread with the same rotation direction as the first thread section, two push plates are both threadedly connected to the threaded shaft, and a transmission assembly is provided between the threaded shaft and the rotating shaft for making the threaded shaft and the rotating shaft rotate synchronously.

4. The support and protection device for tunnel construction according to claim 2, characterized in that: The vertical moving assembly includes a scissor assembly, and the scissor assembly includes rotating rods. The rotating rods are grouped in pairs, and the two rotating rods in each group are cross-rotatingly connected, and each two adjacent groups of rotating rods are rotatably connected; the two side ends of the scissor assembly are respectively connected with sliders for driving the scissor assembly to move and retract, and the two sliders on one side are slidably connected to the moving seat, and a second thread segment is provided on the outer side wall of the rotating shaft, and the second thread segment is arranged in the middle of the first thread segment. The two sections of thread in the second thread segment are respectively opposite to the spiral directions of the two sections of thread in the adjacent first thread segment, and the two sliders on the other side are respectively threadedly connected to the two sections of thread in the second thread segment, and a support assembly for balancing and supporting the moving seat is provided on one side of the rotating rod.

5. The supporting and protecting device for tunnel construction according to claim 4, characterized in that: The support assembly comprises a connecting rod, the side end surface of each push plate is rotatably connected to one end of a connecting rod, the other end of each connecting rod is rotatably connected to a support, and the support is slidably connected to the moving seat.

Images