Vehicle brake failure buffer device and buffer method for tunnel construction process

Abstract

The application discloses a vehicle brake failure buffering device and buffering method in a tunnel construction process, which comprises a tunnel for construction, a plurality of blocking ropes, two ends of the blocking ropes are anchored on the two sides of the tunnel in the transverse direction, and the anchoring heights of any two blocking ropes are different; a positioning mechanism arranged at the vault of the tunnel, and a controller for controlling the positioning mechanism, the positioning mechanism is used for positioning the blocking ropes in the longitudinal direction and releasing the positioning of the blocking ropes under the control of the controller. The application provides a vehicle brake failure buffering device and buffering method in a tunnel construction process, so as to solve the problems of long laying distance and great starting difficulty of the active deceleration structure for the vehicle in the tunnel in the prior art, and achieve the purpose of effectively blocking the vehicle with brake failure in the tunnel in a short distance.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of tunnel construction safety, in particular to a vehicle brake failure buffer device and buffer method used in the process of tunnel construction. BACKGROUND

[0002] In the process of tunnel construction, in order to guarantee the construction period, improve the ventilation of the tunnel, do a good job in waterproofing and drainage, guarantee the construction power supply and deal with geological and natural disasters, etc., the construction technology of inclined shaft or flat guide is generally used to solve the problem of long tunnel construction, which changes the long tunnel construction into a segmented short tunnel construction problem. This kind of construction technology can significantly reduce the difficulty of long tunnel construction operation.

[0003] As a supporting auxiliary structure of the main tunnel of highway and railway, the use of inclined shaft or flat guide can greatly facilitate the operation of the main tunnel, but the traffic transportation safety risk in such auxiliary tunnel has been an engineering problem. The reason is that such auxiliary tunnel generally has the characteristics of long hole body and large longitudinal slope. Although the relevant standard suggests that the slope should be preferably not greater than 12°, in the actual construction site, due to the restriction of topography and geography, there are many auxiliary tunnels with slope greater than 12°. When the carrying vehicle continuously descends in these long-distance and large-slope tunnels, due to the engineering requirement of speed limitation in the tunnel, it is inevitable to continuously brake for a long time. In this process, the brake system heat recession phenomenon is very prominent, and in severe cases, it can even lead to complete loss of braking ability of the vehicle, causing major engineering accidents. Especially for fully loaded vehicles, for example, carrying about 20 cubic meters of sand and stone, the load may even be as high as 40-50 tons. Once the brake fails, the safety hazard is great.

[0004] Traditionally, the way to overcome this problem is to add several gentle slope sections or escape lanes in such auxiliary tunnels, but this method has the defects of increasing the length of the tunnel, increasing the difficulty of tunnel construction, and poor speed reduction effect on the brake failure vehicle. In addition, some active blocking equipment has appeared in the prior art when detecting vehicle brake failure, such as CN212358132U which uses a shield tail steel wire brush on the ground, and CN104163186B which uses a car blocking foam on the ground. However, these prior arts all use the idea of increasing the friction between the wheels and the ground to slow down the vehicle. If you want to effectively slow down or even brake, you need to lay a long distance of high-friction coefficient devices such as shield tail steel wire brush or car blocking foam. Whether it is the difficulty of construction or the difficulty of controlling its rapid laying in a long distance, the on-site use effect is not good. Moreover, this bottom friction increasing braking method has the risk of cargo tipping due to the force point at the bottom of the wheel and the high position of the cargo under the condition of excessive speed and inertia. SUMMARY

[0005] The application provides a vehicle brake failure buffering device and buffering method in a tunnel construction process to solve the problems of long laying distance and high starting difficulty of the active deceleration structure for vehicles in the auxiliary tunnel in the tunnel construction process in the prior art, and achieves the purpose of effectively stopping the vehicle with brake failure in the tunnel construction process in a short distance.

[0006] The application is achieved by the following technical solutions:

[0007] The vehicle brake failure buffering device in the tunnel construction process comprises a tunnel for construction, a plurality of blocking ropes, two ends of the blocking ropes are anchored in the two sides of the tunnel in the transverse direction, and the anchoring heights of any two blocking ropes are different; a positioning mechanism arranged at the vault of the tunnel, and a controller for controlling the positioning mechanism, the positioning mechanism is used for positioning the blocking ropes in the longitudinal direction and releasing the positioning of the blocking ropes under the control of the controller.

[0008] In view of the problems of long laying distance and high starting difficulty of the active deceleration structure for vehicles in the auxiliary tunnel in the tunnel construction process in the prior art, the application first provides a vehicle brake failure buffering device in the tunnel construction process, the tunnel for construction in the application refers to the auxiliary tunnel in the main hole construction process of the tunnel, that is, the inclined shaft, flat guide and other structures understood by those skilled in the art. The device anchors a plurality of blocking ropes across the tunnel, so that the two ends of the blocking ropes are anchored in the mountains on the two sides of the tunnel. The number of the blocking ropes is not limited, and the more the number is, the better the blocking effect is; the anchoring heights of any two blocking ropes are different, that is, the anchoring heights of the blocking ropes are all different, so that the anchoring ropes can be distributed in the longitudinal direction in sequence in the natural state, which is beneficial to forming a larger blocking area on the cross section of the tunnel. The positioning mechanism is arranged at the vault of the tunnel, and each blocking rope is positioned at the vault area of the tunnel by the positioning mechanism in the normal state to avoid the blocking ropes from falling in the longitudinal direction. Under the action of the positioning mechanism, each blocking rope does not affect the normal driving of the vehicle in the normal working condition. When the vehicle in the tunnel has a dangerous working condition such as brake failure and speed loss, the controller controls the positioning mechanism to start and release the longitudinal positioning of each blocking rope, so that each blocking rope can fall under the action of gravity, and then each blocking rope is transversely arranged in the tunnel to form a blocking barrier. When the speed loss vehicle reaches the blocking barrier area, each blocking rope blocks the speed loss vehicle to make it quickly decelerate or even completely stop. Even if each blocking rope is broken and the vehicle cannot completely stop, the speed of the vehicle can be effectively reduced.

[0009] It should be noted that the tunnel transverse direction in the application refers to the width direction of the tunnel; the longitudinal positioning of each blocking rope by the positioning mechanism can be achieved by any structure / device / equipment that can temporarily support the blocking rope and prevent the blocking rope from falling.

[0010] Compared with the prior art, the application discards the way of adding a gentle slope section or a safety lane, without the need to increase the length of the tunnel and the construction difficulty of the tunnel itself; at the same time, the technical idea of actively setting a large friction coefficient deceleration device on the ground is also abandoned, avoiding the technical difficulties brought by the need to lay long-distance car-stopping foam / steel wire brush in a short time. A set of blocking ropes corresponding to one positioning mechanism only needs to be set on one cross section of the tunnel. The device as a whole occupies very small space in the length direction of the tunnel, and its response speed is extremely fast under the action of gravity, which can fully improve the blocking effect on the stalled vehicles in the tunnel. Moreover, since the application uses a plurality of blocking ropes to directly block the vehicle body, the idea of increasing the wheel friction in the prior art is completely abandoned, so when the device blocks the stalled vehicle, the force position of the vehicle is no longer at the wheel position at the bottom, but at the height where each blocking rope is located. Therefore, even in the case of high speed and large inertia, there is no risk of cargo tipping over, significantly improving the blocking stability and safety of the stalled vehicle.

[0011] Further, the lateral two side walls of the tunnel are provided with anchor plates through anchor rods, and the two ends of the blocking rope are fixed on the anchor plates on the two sides.

[0012] The anchor plate is fixedly installed on the lateral two side walls of the tunnel through the anchor rod, so that the blocking rope can be effectively anchored to improve its stability. The fixed connection between the end of the blocking rope and the anchor plate can be achieved by any existing method.

[0013] Further, the blocking ropes are distributed at equal intervals in the vertical direction or the direction perpendicular to the tunnel ground on the anchor plate. The two blocking rope arrangement modes in the present application can make each blocking rope open in the longitudinal direction and present the required blocking barrier effect. The arrangement of each blocking rope in the vertical direction perpendicular to the tunnel ground on the anchor plate is a more preferred scheme, which is beneficial to make the vehicle share the force with more blocking ropes when the vehicle contacts the blocking ropes, and also can reduce the risk of entanglement and knot when each blocking rope is stored in the top positioning mechanism.

[0014] Further, the positioning mechanism includes a positioning plate fixed on the top surface of the tunnel and a plurality of side-by-side distributed positioning grooves opened in the bottom surface of the positioning plate. The positioning grooves extend to both sides along the lateral direction of the tunnel, and the two ends of the positioning grooves are open. The positioning grooves correspond one-to-one to the blocking ropes. Each positioning groove is provided with an anti-falling device connected to the controller signal, and the anti-falling device is used to prevent the blocking rope located in the positioning groove from falling.

[0015] In view of the fact that the blocking ropes need to be quickly lowered by gravity in the present application, the positioning mechanism is specially designed, wherein the positioning plate is fixedly installed on the top surface of the tunnel, a plurality of positioning grooves are formed on the bottom surface of the positioning plate, and the number of the positioning grooves is preferably matched with the number of the blocking ropes. In the normal state, the blocking ropes are located in the corresponding positioning grooves, and the anti-falling device blocks the blocking ropes to prevent the blocking ropes from falling. When the blocking ropes need to be used, the controller controls the anti-falling device to work and unblock the blocking ropes, so that the blocking ropes can automatically fall.

[0016] Further, the anti-falling device comprises a plurality of baffles which are spaced apart and arranged at the bottom end of the positioning groove, and a first power device for driving the baffles to overturn. The baffles are hinged to the bottom surface of the positioning plate, and the first power device is signal-connected with the controller.

[0017] Each baffle is hinged to the bottom surface of the positioning plate and is in a state of shielding the bottom surface of the positioning groove in the normal state, so as to carry the blocking ropes located in the positioning plate and avoid falling. When the blocking ropes need to be used, the controller controls the corresponding baffles to overturn downward, so as to unblock the bottom surface of the positioning groove. Preferably, for the same positioning groove, all the corresponding baffles are controlled in linkage.

[0018] The driving of the baffles to overturn by the first power device can be realized by any existing driving mode, such as a motor.

[0019] Further, an installation cavity is formed on the inner top surface of the positioning groove and faces the tunnel vault, a winding device is installed in the installation cavity, a pull rope is wound on the winding device, and the winding device is driven to rotate by a second power device. A cutting mechanism arranged in the installation cavity or on the bottom surface of the positioning plate is further provided, and the cutting mechanism is used to cut the pull rope.

[0020] In view of the fact that the auxiliary tunnel in the present application has a high height, it is difficult to install the blocking ropes for the first time or to repeatedly install the blocking ropes after use. In order to overcome this problem, an installation cavity is formed on the inner top surface of the positioning groove and faces the vault, the installation cavity is used to install a winding device, and a sufficient amount of pull rope is wound on the winding device in advance. When the blocking ropes need to be installed into the containing groove, the blocking ropes can be naturally hung first, then the winding device is driven to rotate by the second power device, the pull rope wound thereon is put down, the bottom end of the pull rope is tied on the middle position of the corresponding blocking rope, the winding device is driven to rotate reversely by the second power device, the pull ropes are wound, the middle part of the blocking rope is pulled to the positioning groove on the positioning mechanism, and then the cutting mechanism cuts the pull rope at the top, so that the automatic lifting of the blocking rope is realized, the manual high-altitude operation is avoided each time, and the safety hazard is reduced.

[0021] Further, the cutting mechanism comprises a cutter and a limiting block respectively arranged on both sides of the positioning groove, and a third power device for driving the cutter to make linear reciprocating motion towards the limiting block.

[0022] In the present scheme, the naturally falling pull ropes pass through the area between the cutter and the limiting block; when it is necessary to cut the pull ropes, the cutter is driven by the third power device to move towards the limiting block until the cutter reaches the surface of the limiting block, thereby completing a cutting action on the pull ropes.

[0023] Further, the cutting mechanism comprises a cutter and a limiting block respectively arranged on both sides of the positioning groove, and a third power device for driving the cutter to make linear reciprocating motion towards the limiting block.

[0024] In order to enable the whole blocking cable lifted by the pull ropes to enter the positioning groove, the present scheme further comprises two tracks respectively arranged on both sides of the mounting cavity in the positioning groove, and a clamp slidingly fitted on each track. When the middle part of the blocking cable is lifted to the positioning groove on the positioning mechanism, the clamps on both sides are activated to make the two clamps respectively slidingly fitted with the blocking cables on both sides of the mounting cavity, and then the fourth power device of each clamp is used to drive the two clamps to slide towards both sides. Since the clamps are used to movably clamp the blocking cables, the clamps and the blocking cables can relatively displace, and with the sliding of the clamps, the blocking cables on both sides can be gradually lifted to enable the blocking cables to completely enter the positioning groove as required.

[0025] Furthermore, with the sliding of the clamps, each baffle can be gradually turned over to shield the open end of the bottom surface of the positioning groove, thereby longitudinally positioning the blocking cable entering the positioning groove.

[0026] Based on the buffering method of any one of the preceding vehicle brake failure buffering devices, the method comprises the following steps:

[0027] S1, positioning each blocking cable on the tunnel vault by using the positioning mechanism;

[0028] S2, when the controller receives the blocking signal, releasing the positioning of each blocking cable by the positioning mechanism to enable each blocking cable to naturally fall.

[0029] Further, the method for positioning each blocking cable on the tunnel vault by using the positioning mechanism comprises:

[0030] S101, suspending each blocking cable in the tunnel in a transverse direction;

[0031] S102, releasing a plurality of pull ropes from the positioning mechanism at the top, and binding each pull rope to the middle part of a corresponding blocking cable;

[0032] S103, winding up each pull rope to lift the middle part of the blocking cable to the positioning groove on the positioning mechanism.

[0033] S104, the two sides of the middle of the blocking rope are clamped and clamped in the positioning groove, and the clamp is driven to slide to the two sides; when the clamp slides through the position corresponding to any baffle at the bottom end of the positioning groove, the baffle is driven to flip to block the open end of the bottom surface of the positioning groove;

[0034] S105, cutting the pull rope from the positioning mechanism.

[0035] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0036] 1. The vehicle brake failure buffer device and buffer method for tunnel construction process of the application abandon the way of adding a gentle slope section or a safety lane, without the need to increase the length of the tunnel and the construction difficulty of the tunnel itself; at the same time, the technical idea of actively setting a large friction coefficient deceleration device on the ground is also abandoned, avoiding the technical difficulties brought by the need to lay long-distance blocking foam / steel wire brush in a short time, and a set of blocking rope only needs to be set on one section of the tunnel, the device occupies very small space in the length direction of the tunnel, and its response speed is very fast under the action of gravity, which can fully improve the blocking effect on the stalled vehicles in the tunnel.

[0037] 2. The vehicle brake failure buffer device and buffer method for tunnel construction process of the application, when blocking the stalled vehicle, the stress position of the vehicle is no longer located at the wheel position at the bottom, but at the height where each blocking rope is located, so even in the case of fast speed and large inertia, there is no risk of cargo tipping over, significantly improving the blocking stability and safety of the stalled vehicle.

[0038] 3. The vehicle brake failure buffer device and buffer method for tunnel construction process of the application, under normal conditions, the blocking rope is located in the corresponding positioning groove, and the blocking rope is blocked by the anti-falling device to prevent the blocking rope from falling, when the blocking rope needs to be activated, the controller controls the anti-falling device to work and releases the blocking of the blocking rope, so that the blocking rope automatically falls.

[0039] 4. The vehicle brake failure buffer device and buffer method for tunnel construction process of the application can realize automatic lifting and installation of the blocking rope, avoiding the need for manual high-altitude operation each time and reducing safety hazards. DETAILED DESCRIPTION

[0040] The drawings described herein are used to provide further understanding of the embodiments of the application, constitute a part of the application, and do not constitute a limitation on the embodiments of the application. In the drawings:

[0041] Figure 1 is a cross-sectional view of the specific embodiment of the application under normal conditions;

[0042] Figure 2 Fig. 8 is a sectional view of the positioning plate in the embodiment of the present application;

[0043] Figure 3 Fig. 9 is a partial view of the anchoring plate in the embodiment of the present application;

[0044] Figure 4 Fig. 10 is a structural view of the positioning plate in the embodiment of the present application;

[0045] Figure 5 Fig. 11 is a sectional view of the positioning plate in the embodiment of the present application;

[0046] Figure 6 Fig. 12 is a view of the clamp in the embodiment of the present application.

[0047] Markings in the drawings and corresponding names of parts:

[0048] 1 - barrier cable, 2 - anchoring plate, 3 - anchor rod, 4 - positioning plate, 5 - positioning groove, 6 - baffle, 7 - mounting cavity, 8 - wire winder, 9 - pull rope, 10 - cutter, 11 - limiting block, 12 - track, 13 - clamp, 14 - positioning ring. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical scheme and advantages of the present application clearer and more apparent, the present application will be further described in detail below with examples and drawings, the illustrative embodiments of the present application and the description thereof are only used to explain the present application, and are not regarded as a limitation to the present application. In the description of the present application, it should be understood that the terms "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation to the scope of protection of the present application.

[0050] Example 1:

[0051] As Figure 1 With Figure 2 the vehicle brake failure buffer device for tunnel construction process shown in the drawings, including a tunnel for construction, the two ends of a plurality of barrier cables 1 are anchored on the transverse sides of the tunnel, and the anchoring heights of any two barrier cables 1 are different; further comprising a positioning mechanism arranged at the vault of the tunnel, a controller for controlling the positioning mechanism, the positioning mechanism is used for positioning each barrier cable 1 in the longitudinal direction, and releasing the positioning of each barrier cable 1 under the control of the controller.

[0052] The lateral two sidewalls of the tunnel are each provided with an anchor plate 2 through an anchor rod 3, and the two ends of the blocking cable 1 are fixed on the two anchor plates 2 respectively.

[0053] In the embodiment, the blocking cable 1 is distributed on the anchor plate 2 at equal intervals in a direction perpendicular to the tunnel ground.

[0054] Preferably, the blocking cable 3 is a steel cable woven by several strands of steel wire rope.

[0055] Preferably, the blocking cable with the highest anchoring height has a lowest height during natural falling, which is at least 1 / 2 of the total height of the tunnel.

[0056] The use process of the embodiment includes:

[0057] S1, positioning each blocking cable 1 at the tunnel vault by using a positioning mechanism;

[0058] S2, when the controller receives a blocking signal, releasing the positioning of each blocking cable 1 by the positioning mechanism, so that each blocking cable 1 falls naturally.

[0059] The blocking signal received by the controller can be sent by a speed sensor, a visual acquisition device, etc. arranged in the tunnel, or can be sent by a remote control device placed on the vehicle.

[0060] Embodiment 2:

[0061] The vehicle braking failure buffer device used in the tunnel construction process is based on the embodiment 1, and the anchor plate 2 is as shown in Figure 3 A plurality of through holes for the end of the blocking cable 1 to pass through are formed on the anchor plate 2, and the end of the blocking cable 1 is fixed with the corresponding anchor rod 3 after passing through the corresponding through hole.

[0062] In the embodiment, a positioning ring 14 that cannot pass through the through hole is further fixed on the blocking cable 1, and the positioning ring 14 is located on the side of the anchor plate 2 facing the tunnel sidewall.

[0063] In a more preferred embodiment, the anchor rod is a hollow anchor rod, one end of the blocking cable is inserted into the inside of the anchor rod, and the blocking cable, the anchor rod and the anchor plate are fixed as a whole by grouting.

[0064] Embodiment 3:

[0065] The vehicle braking failure buffer device used in the tunnel construction process is based on any of the above embodiments, and as shown in Figure 4As shown, the positioning mechanism comprises a positioning plate 4 fixed on the top surface of the tunnel, a plurality of positioning grooves 5 distributed side by side and opened on the bottom surface of the positioning plate 4, the positioning grooves 5 extend to both sides along the transverse direction of the tunnel, and the two ends of the positioning grooves 5 are open, and the positioning grooves 5 correspond to the arresting ropes 1 one by one; each positioning groove 5 is provided with a falling prevention device connected with the controller signal, and the falling prevention device is used for preventing the arresting rope 1 located in the positioning groove 5 from falling.

[0066] In this embodiment, the falling prevention device comprises a baffle 6 distributed at the bottom end of the positioning groove 5, and a first power device used for driving the baffle 6 to overturn, the baffle 6 is hinged on the bottom surface of the positioning plate 4, and the first power device is connected with the controller signal.

[0067] Preferably, the first power device is an electric motor.

[0068] Embodiment 4:

[0069] The vehicle braking failure buffer device used in the tunnel construction process is based on embodiment 3, as shown in the figure, Figure 4 and Figure 5 In this embodiment, for any positioning groove 5, the corresponding baffle 6 has a plurality of baffles, and there is a certain spacing between any two adjacent baffles 6. All the baffles 6 corresponding to any positioning groove 5 are linked, and the first power devices corresponding to any positioning groove 5 are linked.

[0070] A mounting cavity 7 facing the tunnel vault is opened on the inner top surface of the positioning groove 5, a winding device 8 is mounted in the mounting cavity 7, a pull rope 9 is wound on the winding device 8, and the winding device 8 is driven to rotate by a second power device; further comprising a cutting mechanism arranged in the mounting cavity 7 or on the bottom surface of the positioning plate 4, the cutting mechanism is used for cutting the pull rope 9.

[0071] Further comprising two tracks 12 arranged on the inner top surface of the positioning groove 5, a clamp 13 slidingly fitted on the tracks 12, and a fourth power device used for driving the clamp 13 to slide on the tracks 12, the two tracks 12 are respectively located on both sides of the mounting cavity 7, and the clamp 13 is used for movably clamping the arresting rope 1.

[0072] The cutting mechanism comprises a cutter 10 arranged on both sides of the positioning groove 5, a limiting block 11, and a third power device used for driving the cutter 10 to make linear reciprocating motion towards the limiting block 11.

[0073] In this embodiment, each arresting rope 1 can be positioned on the tunnel vault by the following method:

[0074] S101, each arresting rope 1 is suspended in the tunnel along the transverse direction;

[0075] S102, release a number of pull ropes 9 from the positioning mechanism on the top, and bind the pull ropes 9 one by one to the middle of the blocking cable 1;

[0076] S103, roll up each pull rope 9, so that the middle of the blocking cable 1 is pulled to the positioning slot 5 on the positioning mechanism;

[0077] S104, use the clamp 13 to movably clamp the two side areas of the middle of the blocking cable 1 in the positioning slot 5, and drive the clamp 13 to slide to both sides; when the clamp 13 slides through the position corresponding to any baffle 6 at the bottom end of the positioning slot 5, drive the baffle 6 to flip to block the open end of the bottom surface of the positioning slot 5;

[0078] S105, cut the pull rope 9 from the positioning mechanism.

[0079] In a more preferred embodiment, the number of positioning slots 5 is the same as the number of blocking cables 1, each blocking cable is numbered from top to bottom, and each positioning slot 5 is numbered in turn along the uphill direction of the tunnel, and each blocking cable is stored in the corresponding numbered positioning slot in the normal state.

[0080] In a more preferred embodiment, when the positioning mechanism releases the positioning of each blocking cable 1, it is released one by one from top to bottom along the anchoring height of the blocking cable, and there is a certain time delay, such as 1-3s, between the release control of adjacent two blocking cables, in order to reduce the risk of entanglement and knotting of each blocking cable during the falling process.

[0081] Preferably, the second power device is an electric motor, and the third power device is an electric push rod.

[0082] Preferably, the clamp 13 is fixedly connected with a sliding block, and the sliding block slides in the corresponding track 12.

[0083] Preferably, the sliding block has a roller matched with the track 12, and the fourth power device is an electric motor driving the roller to rotate.

[0084] Example 5:

[0085] The vehicle brake failure buffer device used in the tunnel construction process is based on example 4, wherein the clamp 13 is as shown in Figure 6 The bottom of the clamp 13 has two openable hook parts, when the clamp 13 movably clamps the blocking cable 1, the hook parts hook the blocking cable from the bottom, so that the clamp 13 can independently and stably slide along the track 12, and the blocking cable 1 cannot slide synchronously.

[0086] The above detailed description merely describes the specific implementation of the present application, and the purpose, technical solutions and beneficial effects of the present application are further explained. It should be understood that the above description is only a specific implementation of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0087] It should be noted that, in this text, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. In addition, the term "connected" used in this text can be directly connected or indirectly connected via other components without special description.

Claims

1. A vehicle brake failure mitigation device for use in the construction of a tunnel, comprising a tunnel for construction, characterised in that, The tunnel further comprises a plurality of blocking ropes (1), both ends of each of the blocking ropes (1) being anchored on the two lateral sides of the tunnel, and the anchoring heights of any two of the blocking ropes (1) being different; the tunnel further comprises a positioning mechanism arranged at the vault of the tunnel and a controller for controlling the positioning mechanism, the positioning mechanism being used for positioning each of the blocking ropes (1) in the longitudinal direction and releasing the positioning of each of the blocking ropes (1) under the control of the controller; The positioning mechanism comprises a positioning plate (4) fixed on the top surface of the tunnel, a plurality of positioning grooves (5) arranged side by side and opened on the bottom surface of the positioning plate (4), the positioning grooves (5) extending to both sides along the transverse direction of the tunnel, both ends of each of the positioning grooves (5) being open, and each of the positioning grooves (5) corresponding to one of the blocking ropes (1); each of the positioning grooves (5) is provided with an anti-falling device connected with the controller, the anti-falling device being used for preventing each of the blocking ropes (1) positioned in the positioning groove (5) from falling; The anti-falling device comprises a plurality of baffles (6) arranged at intervals at the bottom end of the positioning groove (5) and a first power device for driving the baffles (6) to flip, the baffles (6) being hinged to the bottom surface of the positioning plate (4), and the first power device being connected with the controller; An installation cavity (7) facing the vault of the tunnel is opened on the inner top surface of each of the positioning grooves (5), a winding device (8) is arranged in the installation cavity (7), a pull rope (9) is wound on the winding device (8), and the winding device (8) is driven to rotate by a second power device; the positioning mechanism further comprises a cutting mechanism arranged in the installation cavity (7) or on the bottom surface of the positioning plate (4), the cutting mechanism being used for cutting the pull rope (9); The cutting mechanism comprises a cutter (10) and a limiting block (11) arranged on both sides of each of the positioning grooves (5) respectively, and a third power device for driving the cutter (10) to do linear reciprocating motion towards the limiting block (11); The positioning mechanism further comprises two tracks (12) arranged on the inner top surface of each of the positioning grooves (5), a clamp (13) slidingly fitted on the tracks (12), and a fourth power device for driving the clamp (13) to slide on the tracks (12), the two tracks (12) being respectively located on both sides of the installation cavity (7), and the clamp (13) being used for movably clamping each of the blocking ropes (1).

2. The vehicle brake failure mitigation device for use in tunnel construction processes according to claim 1, characterized in that, Both lateral walls of the tunnel are provided with anchor plates (2) through anchor rods (3), and both ends of each of the blocking ropes (1) are fixed on the anchor plates (2) on the two lateral sides.

3. The vehicle brake failure mitigation device for use in tunnel construction processes according to claim 2, characterized in that, The blocking ropes (1) are equally spaced in the vertical direction or the direction perpendicular to the ground of the tunnel on the anchor plates (2).

4. The buffering method for the vehicle brake failure buffer device for use in a tunnel construction process according to any one of claims 1 to 3, characterized by, The method comprises the following steps: S1, positioning each of the blocking ropes (1) at the vault of the tunnel by using the positioning mechanism; S2, when the controller receives a blocking signal, releasing the positioning of each of the blocking ropes (1) by the positioning mechanism, so that each of the blocking ropes (1) naturally falls.

5. The buffering method of claim 4, wherein, The method for positioning each of the blocking ropes (1) at the vault of the tunnel by using the positioning mechanism comprises: S101, each of the blocking ropes (1) is suspended in the tunnel along the transverse direction; S102, a plurality of pull ropes (9) are released from the positioning mechanism at the top, and the pull ropes (9) are correspondingly bound to the middle portions of the blocking ropes (1). S103, winding each pull rope (9) to pull the middle part of the barrier cable (1) to the positioning slot (5) on the positioning mechanism; S104, using the clamp (13) to movably clamp the two side areas of the middle part of the barrier cable (1) in the positioning slot (5), and driving the clamp (13) to slide to both sides; when the clamp (13) slides through the position corresponding to any baffle (6) at the bottom end of the positioning slot (5), driving the baffle (6) to flip to block the open end of the bottom surface of the positioning slot (5); S105, cutting the pull rope (9) from the positioning mechanism.

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