Intercepting device, intercepting system

Abstract

The application discloses an intercepting device and an intercepting system, and the intercepting device contained in the intercepting system comprises a main support located at a first side of a roadway, a secondary support located at a second side of the roadway, the second side and the first side corresponding to left and right sides of the roadway, a net support hinged to the main support at one end and provided with a connecting head at the other end, a connecting device installed on the secondary support and connected with the connecting head when the net support is turned to a horizontal position in the roadway, a second side connecting head arranged on the connecting device, an intercepting net installed on the net support, the first side of the intercepting net or the first side of the net support being provided with a first connecting head for being connected with a first energy absorber, and a turning driving device installed on the side where the main support is located. The intercepting device according to the application is relatively easy to ensure reliability.

Description

Technical Field

[0001] This invention relates to a trackless rubber-tired vehicle interception device, and also to an interception system equipped with the interception device. Background Technology

[0002] There are currently three main types of stall protection devices for trackless rubber-tired vehicles;

[0003] The first type involves using arresting cables to stop trackless rubber-tired vehicles. This requires equipping the vehicle with a tail hook system (also known as a pull hook system), as illustrated in Chinese patent document CN103786694A. This type of trackless rubber-tired vehicle stall protection device consists of two parts: one is the part installed in the tunnel to stop the vehicle, which can be called the protective part; the other is the part installed on the vehicle, namely the aforementioned tail hook system. These two parts need to work together; otherwise, they are prone to failure or cannot achieve a satisfactory stopping effect. The protective components include barrier cables laid laterally at predetermined locations in the roadway, and energy absorbers connected to the barrier cables. As a necessary configuration, the barrier cables need to be equipped with tensioning devices to tension them, so that the barrier cables can be raised above the roadway surface at a predetermined height and below the chassis of the trackless rubber-tired vehicle. When the trackless rubber-tired vehicle stalls, it releases its tail hook. When the vehicle passes the barrier cables, the tail hook catches the barrier cables, and the energy absorbers work, causing the trackless rubber-tired vehicle to gradually decelerate to achieve protection.

[0004] The first type of potential hazard is that, because the arresting cable is always positioned at a predetermined height relative to the roadway surface, when a trackless rubber-tired vehicle reaches its location, it will run over the cable twice each time (once on the front and once on the rear wheels), damaging the cable and reducing its service life. Furthermore, when the mine operates a shovel loader or support transport vehicle within the roadway, it is very easy for the cable to get caught, causing unnecessary losses.

[0005] The second type is the head-mounted blocking method. Specifically, this type of trackless rubber-tired vehicle stall protection device uses a barrier net for interception. The barrier net is suspended and placed at a predetermined position in the roadway. An energy absorber is installed at both ends of the barrier net. It is also equipped with a lifting device, which raises and lowers the barrier net by means of suspension.

[0006] More specifically, the adapted trackless rubber-tired vehicle interception system includes an interception unit, which includes an interception net having an initial state and an interception state. In the initial state, the interception net is raised to the top of the alley, while in the interception state, the interception net is lowered to a position sufficient to block the trackless rubber-tired vehicle from the front.

[0007] The second type of barrier net has a problem: because the raising and lowering of the barrier net needs to be considered, the connecting steel wire rope used to connect to the energy absorber often needs a certain amount of slack. However, in the blocking state, the connecting steel wire rope is often relatively slack, and the energy absorber cannot work immediately in the initial stage of blocking, which may cause it to miss the best blocking opportunity. In addition, the connecting steel wire rope is dragging on both sides of the barrier net, and the connecting steel wire rope is relatively high when the barrier net is raised. The slack connecting steel wire rope is prone to swinging back and forth and is easily caught on other objects. Furthermore, the raising and lowering barrier net has a difficult problem to solve: sometimes it does not descend to the correct position, either too much or too little, resulting in an inappropriate blocking state, which may lead to blocking failure or secondary damage.

[0008] The third type: The third type of trackless rubber-tired vehicle stall protection device can be understood as a double-door barrier system, which includes two barrier nets, namely the left barrier net and the right barrier net. Under normal circumstances, the double doors are in the open state, and the trackless rubber-tired vehicle can pass normally. However, under the barrier state, the double doors are in the closed state, and at this time, the left and right barrier nets overlap in the middle of the left and right directions of the roadway.

[0009] The third approach has several problems. First, the two sets of interception nets need to be joined during movement, and the accuracy of this joining needs verification. Second, because the interception nets operate at a relatively low frequency, and are normally in an open state, the drive mechanism is inactive for extended periods. Anyone with basic mechanical knowledge understands that equipment left idle for long periods is prone to rusting in its transmission components. When it needs to operate again, it may not function smoothly or may even malfunction. Furthermore, as the number of drive and transmission components increases, the overall probability of failure also accumulates. Therefore, using two sets of drive mechanisms and compatible transmission components inevitably increases the failure rate. Additionally, ensuring the synchronization of the two drive mechanisms adds another step, further increasing the failure rate. Summary of the Invention

[0010] The purpose of this invention is to provide an interception device with relatively easy reliability assurance for intercepting a stalled trackless rubber-tired vehicle. This invention also relates to a trackless rubber-tired vehicle stall interception system equipped with the interception device.

[0011] According to a first aspect of the present invention, an interception device is provided for stall protection of a trackless rubber-tired vehicle, the interception device comprising:

[0012] The main support, in its installed state, is located on the first side of the predetermined position in the tunnel;

[0013] The auxiliary support, in the installed state, is located on the second side of the predetermined position in the roadway, and the second side and the first side are the left and right sides of the roadway respectively;

[0014] The space frame is hinged to the main support at one end and has a connecting head at the other end;

[0015] A connecting device is installed on the secondary support so that it connects with the connecting head when the grid structure is swung to a position where it is placed horizontally in the roadway.

[0016] The second-side connector is provided on the connecting device for connecting the second-side energy absorber;

[0017] An intercepting net, installed on the mesh frame, wherein a first-side connector for connecting to a first-side energy absorber is provided on a first-side side of the intercepting net or the first side of the mesh frame; and

[0018] A swing drive device is installed on the side where the main support is located, used to drive the space frame to swing.

[0019] Optionally, the second connector is mounted on a detachable frame that detaches from the sub-support when the net is impacted.

[0020] Optionally, the connection method between the detachable frame and the second support is as follows:

[0021] The first connection method involves connecting to the sub-support via a connector having a predetermined shearing force; or

[0022] The second connection method is a pin sleeve connection, which is configured as follows:

[0023] A connecting pin is provided on the sub-support, which is located on the side of the sub-support opposite to the side where the energy absorber is located; a pin sleeve is provided that fits on the connecting pin and the detachable frame is mounted on the pin sleeve.

[0024] Optionally, the detachment frame includes:

[0025] Detach the frame body;

[0026] The connecting device, in conjunction with the connecting head, forms a hook assembly with an anti-detachment structure or constitutes a pin connection assembly.

[0027] Optionally, the detachable frame body is adapted to the pin connection assembly to form a lifting frame, the pin connection assembly comprising:

[0028] A pin is mounted on the lifting frame and extends downwards;

[0029] The mechanism restricts the lifting frame to a predetermined height detached from the frame body;

[0030] The connecting head includes a pin hole and an actuating part that triggers the mechanism, causing the lifting frame to fall and the pin to pass through the pin hole.

[0031] Optionally, the lifting frame is equipped with a forced descent force application component.

[0032] Optionally, the forced descent force application component is a tension spring, one end of which is connected to the lifting frame and the other end is connected to the detached frame body.

[0033] Optionally, the mechanism includes a locking plate and a locking plate shaft assembly that hinges the locking plate to the detachment frame body. The axial direction of the locking plate shaft assembly is the lifting direction of the lifting frame, so that the locking plate and the locking plate shaft assembly form a lever mechanism.

[0034] Accordingly, one end of the locking plate supports the lifting frame; the other end of the locking plate is the actuating end, which is used to withstand the actuation of the actuating part.

[0035] Optionally, the actuating end includes an impact plate for intercepting the actuating part.

[0036] Optionally, the lifting frame is adapted to be equipped with a lifting guide device;

[0037] The lifting guide device includes:

[0038] Guide sleeves installed on the detachment frame body and guide rods installed on the lifting frame;

[0039] The mechanism is used to define the guide rod.

[0040] Optionally, the pins are provided in pairs to form an upper pin and a lower pin, so that the lifting frame has a predetermined vertical span;

[0041] Accordingly, the pin hole has an upper pin hole and a lower pin hole.

[0042] Optionally, the lifting frame has a handle.

[0043] Optionally, the space frame includes:

[0044] crossbar;

[0045] The net body fixing frame is provided at each end of the crossbar, and the net body fixing frame extends downward relative to the crossbar.

[0046] Optionally, the crossbar is a fragile bar.

[0047] Optionally, the crossbar is a fiberglass rod.

[0048] Optionally, the crossbar is formed by connecting multiple boom units.

[0049] Optionally, the boom units of the crossbar are connected by pivoting units;

[0050] Accordingly, a drive mechanism is provided for driving the folding of the boom units so that the space frame is in a folded state or unfolded for operation.

[0051] Optionally, the interception net is a rigid mesh frame or a flexible mesh.

[0052] Optionally, the flexible net is a net body formed from organic or inorganic mesh belts.

[0053] Optionally, the organic mesh belt is a nylon, aramid, or ultra-high molecular weight polyethylene mesh belt.

[0054] Optionally, the first connector is directly connected to the interceptor network.

[0055] Optionally, the swing drive device is:

[0056] The first swing drive device is a swing cylinder or a swing motor, and its output is connected to the space frame; or

[0057] The second swing drive device is a gear and rack mechanism, with the space frame mounted on the main support via a gear shaft, and the corresponding rack driven by a linear drive mechanism; or

[0058] The third swing drive device is a hydraulic cylinder or an electric push rod, which forms a triangular mechanism with the space frame.

[0059] Optionally, the main support has a support portion that extends further upward relative to the grid frame;

[0060] Provide tie rods or ropes for the inclined space frame to assist in suspending the space frame;

[0061] Accordingly, one end of the tie rod or rope is fixedly installed at the upper end of the support, and the other end is suspended from the middle and / or far end of the space frame; the far end is the end of the space frame away from the main support.

[0062] Alternatively, the connection between the tie rod or rope and the space frame is a connection through a connection structure having a predetermined shearing force.

[0063] Optionally, the connection structure is a nylon snap-lock connection.

[0064] Optionally, the main support has two parallel support bodies, one of which is hinged to the grid frame and the other is used to install the swing drive device.

[0065] According to a second aspect of the present invention, an interception system is provided, including the interception device of the first aspect of the present invention, and further including energy absorbers located on both sides of the roadway, wherein the energy absorbers are respectively connected to a first side connector or a second side connector.

[0066] According to an embodiment of the present invention, the interception device has an interception net attached to a mesh frame that can be deployed or retracted by a swing mechanism. In the retracted state, it is in an open state, allowing trackless rubber-tired vehicles to pass through. In the deployed state, it is in a closed state, which can be used to intercept runaway trackless rubber-tired vehicles. The extended end of the mesh frame, which is hinged to the main support, is connected to a secondary support. The main moving points are the hinge positions of the mesh frame and the adapted swing drive device. With few moving points, reliability is relatively easy to ensure. Attached Figure Description

[0067] Figure 1 This is a schematic diagram of a single-open interception device according to an embodiment. The double-dotted line in the figure indicates the open state of the interception device, and the solid line indicates the closed state.

[0068] Figure 2 for Figure 1 Enlarged view of part A.

[0069] Figure 3 This is a three-dimensional structural diagram of the secondary support side portion of the interception device in one embodiment.

[0070] Figure 4 This is a top view of the secondary support side portion of the interception device in one embodiment.

[0071] Figure 5 This is a schematic diagram of the main structure of the secondary support side portion of the interception device in one embodiment.

[0072] Figure 6 This is a schematic diagram of a space frame structure in one embodiment.

[0073] Figure 7 for Figure 6 Enlarged view of part B.

[0074] Figure 8 for Figure 6 Enlarged view of part C.

[0075] Figure 9 This is a schematic diagram of the closed state structure of an interceptor device with a folding function in one embodiment.

[0076] Figure 10 This is a schematic diagram of the open state structure of an interception device with folding function in one embodiment (sub-support omitted).

[0077] Figure 11 for Figure 9 Enlarged view of part D.

[0078] Figure 12 for Figure 10 Enlarged view of part E.

[0079] In the diagram: 1. Main seat plate, 2. First column, 3. First side shackle, 4. First hinge pin, 5. Drive mechanism, 6. First crank arm, 7. Support shaft, 8. Support shaft seat, 9. Second column, 10. Rotary shaft seat, 11. Rotary shaft assembly, 12. Rope hole, 13. Boom unit, 14. Short lifting rope, 15. Long lifting rope, 16. Clamping plate, 18. Lifting shackle assembly, 19. Sub-seat plate, 20. Lower fixed seat, 21. Lower pin, 22. Tension spring, 23. Upper pin, 24. Lifting frame, 25. Handle, 26. Guide rod, 27. Second side pull rod, 28. Second side shackle, 29. Spring pin, 30. Upper fixed seat, 31. Locking plate, 32. Locking plate shaft assembly, 33. Third column, 34. Lower pin hole, 3 5. Lower hanging rod, 36. Lower pin sleeve, 37. Upper pin hole, 38. Guide groove, 39. Fixing plate, 40. Connecting hole, 41. Impact plate, 42. Upper hanging rod, 43. Cover plate, 44. Pin sleeve, 45. Connecting pin, 46. First net body fixing frame, 47. Hinge shaft, 48. Power arm, 49. Second net body fixing frame, 50. Diagonal brace, 51. External lifting lug, 52. First pin hole, 53. Upper pin sleeve, 54. Actuating plate, 55. Triangular support, 56. Second pin hole, 57. Lower pin sleeve, 58. Pull rod, 59. First connecting rod, 60. First pin shaft, 61. Second pin shaft, 62. Second crank arm, 63. Third pin shaft, 64. Support frame, 65. Triangular rocker arm, 66. Fourth pin shaft, 67. Fifth pin shaft. Detailed Implementation

[0080] In the embodiments of the present invention, the location of the interception device in the alley is common knowledge in the art and does not change due to the improvement of the interception device in the embodiments of the present invention, and will not be described in detail here.

[0081] It should be understood that, in this field, the interception net in the interception device needs to be placed horizontally at a predetermined position in the roadway in order to play an interception role. Therefore, the interception device is in its working state when it is in the closed state, and its working state is obviously the horizontal placement state of the interception net, which is relative to the basic orientation of the roadway.

[0082] Therefore, the basic orientation of the interception device is determined by the tunnel, namely, the horizontal direction of the tunnel is its left and right direction, the vertical direction is the direction along the tunnel, and the vertical direction is the basic orientation in the conventional sense. At the same time, it should be noted that since the tunnels where the interception device needs to be installed are generally inclined tunnels, the vertical direction does not refer to the absolute vertical direction, but rather the relative vertical direction in terms of position.

[0083] According to the first objective of the embodiments of the present invention, the reliability of the blocking device is improved by using as few transmission links as possible. According to the second objective of the embodiments of the present invention, the reliability of the connection and ease of implementation are improved by selecting the connection method. According to the third objective of the embodiments of the present invention, damage to the blocked vehicle is reduced by using a flexible net.

[0084] The support of the interception device according to the embodiments of the present invention mainly includes two parts, namely the part located on the left side of the roadway and the part located on the right side of the roadway, one part being called the main support and the other part being called the auxiliary support.

[0085] For ease of distinction, the side where the main support is located is called the first side, and the side where the auxiliary support is located is called the second side. Obviously, in the left-right direction of the roadway, the first side and the second side are opposite each other.

[0086] The main support is used to install the active part of the interception device, while the secondary support is used to install the passive part of the interception device.

[0087] It should be understood that for the stall protection device of trackless rubber-tired vehicles, an energy absorber is installed on each side of the roadway. The energy absorber needs to be connected to the interception net, usually at the left or right end of the net. Thus, when the interception net catches the trackless rubber-tired vehicle, the two energy absorbers are also located on both sides of the vehicle and work almost simultaneously, pulling the interception net from both sides to dissipate energy, causing the trackless rubber-tired vehicle to gradually decelerate until it stops.

[0088] During interception, the interception net comes into direct contact with the vehicle. This net should ideally be flexible, made of organic materials such as nylon mesh. The strength of this type of net is sufficient to stop a stalled trackless rubber-wheeled vehicle. With technological advancements, the strength of flexible organic nets is increasing. In terms of tensile strength alone, the tensile strength of some high-strength plastic fibers now surpasses that of materials such as 45 steel.

[0089] Regarding the material of the mesh belt, in addition to organic materials such as nylon, aramid, or ultra-high molecular weight polyethylene, inorganic materials such as steel strips can also be used. When steel is made into a strip, it has a certain degree of toughness and flexibility, which can replace organic mesh belts.

[0090] The mesh belt of the interception net is generally a mesh belt with a width of 20mm or more and less than or equal to 80mm. It is woven in a warp and weft pattern to form the interception net. The two ends of the interception net can be equipped with lock buckles or shackles for connection with the rope buckles of the energy absorber.

[0091] The interception net can be connected to the ropes extending from the energy absorber using other components, such as... Figure 7 The first mesh fixing frame 46 shown in the figure and Figure 8 The second net fixing frame 49 shown can be either a rigid frame, such as a steel pipe frame, which can be a square pipe frame, a round pipe frame, or a pipe frame with other cross-sectional shapes. Earrings are provided on, for example, the first net fixing frame 46, for fixing the interception net, so that the rope from the energy absorber can be connected to, for example, the first net fixing frame 46.

[0092] Furthermore, the energy absorber can also be indirectly connected to, for example, the first mesh fixture 46.

[0093] Furthermore, as mentioned earlier, rigid components should be avoided as much as possible in the interception net, including the aforementioned first net body fixing frame 46. The interception net attached to it can be directly equipped with, for example, shackles. Figure 1 The first side shackle 3 shown is directly installed on the interception net. In the interception state, the net frame is dispersed or broken apart, while the interception net covers and stops the stalled trackless rubber-wheeled vehicle.

[0094] This also shows that the position of the net frame determines the blocking position of the interception net. Compared with the traditional lifting interception net, the interception net based on the embodiment of the present invention is more accurate in its positioning, and will not lead to interception failure or secondary damage caused by interception.

[0095] In embodiments of the present invention, the interception net needs to be attached to a rigid component, namely the net frame, one end of which is hinged to the main support, and the other end has a connecting head.

[0096] exist Figure 7 In the illustrated structure, the hinged end of the space frame has a support shaft 7, which is the hinge shaft on which the space frame is hinged to the main support. The axis of the support shaft 7 is approximately perpendicular to the ground of the tunnel. In other words, the swing plane of the space frame is approximately parallel to the ground of the tunnel.

[0097] The space frame is arranged in a cantilevered manner on the main support, for example... Figure 1 In the illustrated structure, the space frame is also called a hanger. The hanger is composed of several boom units 13. In some embodiments, the entire hanger can be composed of a single boom.

[0098] The direction of the space frame's overhang is the basic direction. Taking, for example, support shaft 7 as a boundary, the portion extending in the opposite direction constitutes the drive end, such as... Figure 7 In the illustrated structure, the reverse-extending portion is the power arm 48. The longer the power arm 48, the greater the torque under the same driving force. However, since the space frame swings in a plane roughly parallel to the roadway floor, the required driving force is not large. Therefore, the power arm 48... Figure 7 The illustrated structure is shown to be relatively short, but sufficient to meet the drive requirements of the space frame.

[0099] The other end of the grid structure is equipped with a connecting head, while the secondary support is equipped with a connecting device. When the end of the grid structure swings to the secondary support, the connecting head and the connecting device are combined into one unit, thus uniting the left and right parts of the intercepting net into a single entity, putting it into operation. At this time, the intercepting net is placed horizontally in the roadway.

[0100] Accordingly, the connecting device should be connected to the second side connector, which in turn is connected to the energy absorber installed on the second side of the roadway.

[0101] The connecting device is installed on the auxiliary support so that when the grid structure swings to the position of being placed horizontally in the roadway, the connecting device and the connecting head are connected.

[0102] When the space frame is swung to a position horizontally in the tunnel, the interception device is in the closed state, and when the space frame is swung to a position roughly in line with the tunnel, it is in the open state.

[0103] Accordingly, the connection between the second-side connector and the coupling device can be a direct connection or an indirect connection.

[0104] Furthermore, a swing drive device is provided, which is installed on the side where the main support is located, for driving the space frame to swing.

[0105] It should be noted that since the current split-type interception nets are already in use, in other words, driven split-type or dual-type interception nets already exist and have been industrialized, the swing form and combination method of the single-type interception net based on the embodiments of the present invention can be found in the traditional split-type interception nets.

[0106] Generally speaking, both the main support and the secondary support can be sacrificed during interception. However, damage to them or detachment from the foundation may cause secondary damage to the trackless rubber-tired vehicle. Therefore, it is necessary to avoid the main support or secondary support from detaching from the foundation as much as possible. Thus, a connection structure with a certain connection force can be used to connect the interception net to the net frame or even to the relevant support. This certain connection force should be less than the impact force of the vehicle.

[0107] In some embodiments, a unidirectional connection can be used, while the connection in the opposite direction is achieved through a loose connection. In use, for example, the interceptor net will be pulled by the energy absorber, and pressure will be generated on the corresponding support in the direction of the pull. This pressure manifests as, for example... Figure 4 The capped sleeve 44 exerts pressure on the connecting pin 45, while in the opposite direction, i.e., the direction of travel when the vehicle stalls, the connecting pin 45 does not restrict the force of the sleeve 44. The second-side connector is mounted on the component on which the sleeve 44 is located, so that in the event of a vehicle impact, the component detaches from the sub-support without causing damage to the sub-support.

[0108] For ease of description, the aforementioned component that can be detached from the sub-support is referred to as the detachment frame. Therefore, as a necessary configuration for the sub-support to avoid damage, the detachment frame is mounted on the sub-support based on a detachment mechanism or structure, and the second-side connector is correspondingly mounted on the detachment frame. The detachment frame can detach from the sub-support when the interception net is impacted, thereby reducing or eliminating damage to the sub-support.

[0109] In some embodiments, the connection between the detachment frame and the second support is a shearing method. The shearing force required for this method, while ensuring a normal connection between the detachment frame and the second support, is sufficient to shear the corresponding shearing structure when stopping a stalled trackless rubber-tired vehicle. The design rationale is relatively clear. For example, if a shearing pin with a shearing force of 1000 Newtons is used, the reliable connection force between the detachment frame and the sub-support only requires 300 Newtons. This means the shearing pin can fully satisfy the normal connection between the detachment frame and the sub-support, while the impact force generated by the trackless rubber-tired vehicle is often very large, such as 500,000 Newtons, which can instantly shear the shearing pin, causing the detachment frame to detach from the sub-support.

[0110] Please note that under normal conditions, the detachable frame acts as a connecting frame, and its connection force with the secondary support does not need to be too large. Under load, it mainly bears the tensile force of the energy absorber. The energy absorber only needs to meet the initial tension, and in some applications, the rope extending from the energy absorber can even be relatively slack. Therefore, if a shearing method is used to connect the detachable frame and the second support, the required shearing force, such as that of the shear pin, is much smaller than the shearing force experienced during restraint. The range of preset shearing forces available in the design is relatively large, resulting in a wider range of design options and less design difficulty. This connection method based on a predetermined shearing force is referred to as the first connection method.

[0111] In some embodiments, a second connection method is adopted, which can be the connection method of connecting pin 45 and pin sleeve 44 as described above, wherein either pin sleeve 44 or connecting pin 45 is connected to the disengagement bracket, and the disengagement direction is opposite to the direction of the energy absorber, i.e., as shown above. Figure 4 As shown, if the energy absorber is on the right side of the third column 33, then the detachment direction is to the left.

[0112] by Figure 4 The following example structure will be used to illustrate the specific implementation scheme of the pin sleeve connection method in the second connection method:

[0113] exist Figure 4In the illustrated structure, the third column 33, serving as a secondary support, is equipped with two connecting pins 45. These two connecting pins 45 are arranged side-by-side in the vertical direction to accommodate the vertical range of the interception net. In some embodiments, the number of connecting pins 45 may be greater, but generally should not exceed four. The minimum number of connecting pins 45 is generally two, but the use of a single connecting pin 45 is not excluded.

[0114] The connecting pin 45 is located on the side opposite to the side where the energy absorber is located on the third column 33. Furthermore, a pin sleeve 44 is provided to mate with each connecting pin 45. In its normal state, the pin sleeve 44 is fitted onto the connecting pin 45 and is connected to the detachable frame, such as... Figure 4 The second side pull rod 27 shown in the example has a connection hole 40 for connecting to the rope from the energy absorber.

[0115] from Figure 4 and Figure 3 As can be seen in the illustrated structure, the axis of the connecting pin 45 is approximately along the tunnel direction and is located on the opposite side of the energy absorber. Thus, under normal conditions, the pin sleeve 44 can be reliably fitted onto the connecting pin 45 by the pull of the rope from the energy absorber, thereby allowing the detached frame to be relatively reliably attached to the secondary support under normal conditions.

[0116] The fit between the connecting pin 45 and the pin sleeve 44 is a transition fit, a clearance fit, or a fit with a clearance between them. In some applications, it can also be an interference fit, which is the second choice. If the force provided by the rope from the energy absorber to, for example, the second side tie rod 27 is relatively small, an interference fit can also be used to reliably mount the pin sleeve 44 onto the connecting pin 45.

[0117] Accordingly, the connecting device should be installed on the detachable frame or form part of the detachable frame. Obviously, the pin sleeve 44 forms the base of the detachable frame, and the connecting device is directly or indirectly installed on the pin sleeve 44.

[0118] The connection between the connecting device and the connecting head involves a connection adapted to the swinging form of the space frame. Specifically, it needs to accommodate the swinging space frame during its rotation into position, allowing the connecting device and the connecting head to complete the connection. This connection is preferably achieved directly by utilizing the force generated by the swinging of the space frame. In some embodiments, other methods can be used, such as employing an additional locking mechanism to achieve the connection between the connecting device and the connecting head after the space frame has swung into position.

[0119] A suitable connection method that relies directly on the power generated by the swing of the space frame is a structural component with an anti-detachment structure. For example, a locking post is provided on the detachment bracket in a roughly vertical direction, and the connecting head is configured as a hook with an anti-detachment plate. When the space frame swings to a position where it is placed horizontally in the tunnel, the hook opening of the hook is roughly opposite to the locking post. The locking post pushes open the anti-detachment plate and enters the hook ring. The anti-detachment plate resets and locks, thus achieving the connection.

[0120] In some embodiments, the connecting device on the detachable frame and the connecting head can also form a pin connection assembly. This pin connection assembly is implemented by means of a third-party provided mechanism, such as a pin mechanism. That is, when the space frame is swung into place, the pin mechanism actuates, causing the pin on the pin mechanism located on the detachable frame to insert into the pin hole on the component forming the connecting head. Figure 8 The first pin hole 52 and the second pin hole 56 shown in the example realize the connection between the connecting device and the connecting head.

[0121] Clearly, the direction of actuation of the pin in the pin mechanism is perpendicular to the plane of rotation of the space frame. The pin of the pin mechanism can be seen in... Figure 3 The upper pin 23 and lower pin 21 are shown in the example. After the space frame is swung into place, the first pin hole 52 and... Figure 3 The upper pin hole 37 is aligned as shown in the example, while the second pin hole 56 is aligned with... Figure 3 The lower pin hole 34 is aligned as shown in the example, and then the upper pin 23 and the lower pin 21 are lowered and inserted into the corresponding pin holes to achieve engagement.

[0122] The upper and lower pins can be integrated into one; if they are two separate parts, the upper pin 23 and the lower pin 21 can be installed on the same frame, such as... Figure 3 The lifting frame 24 shown in the example can be used to achieve synchronous operation.

[0123] The limiting mechanism at the swing end of the space frame is mechanical, such as... Figure 3 As shown, after the end of the space frame swings into position, it will impact the lifting frame 24 and cannot swing further, thus forming a mechanical limit. However, it should also be noted that the speed can be reduced in advance at the end of the swinging motion to avoid excessive impact on the lifting frame 24.

[0124] Furthermore, such as Figure 3 As shown, the detachable frame body is adapted to the pin connection assembly to form a lifting frame 24, and the pin connection assembly includes:

[0125] A pin is mounted on the lifting frame 24 and extends downwards; the reason for this downward extension is that the lifting frame can descend by gravity. In some embodiments, a forced descent component can also be provided, for example... Figure 3The tension spring 22 shown in the figure has its upper end connected to the upper end of the lifting frame 24 and its lower end connected to the lower part of the detached frame. Thus, after the grid frame swings into place, the force provided by the tension spring 22 can make the lifting frame 24 reach its position more quickly.

[0126] Furthermore, a mechanism is provided for the pin mechanism. The function of the mechanism is to activate the pin mechanism, thereby restricting the lifting frame 24 to a predetermined height away from the frame body. When the mechanism is activated, the lifting frame 24 falls, allowing, for example, the upper pin 23 to be inserted into the first pin hole 52 to achieve engagement.

[0127] Accordingly, the end of the space frame should include an actuating part that triggers the mechanism, such as... Figure 8 The actuator plate 54 shown in the figure swings to the end of the swing working stroke. The movement of the space frame gives the actuator plate 54 a certain kinetic energy. With the help of this kinetic energy, the mechanism moves, causing the lifting frame 24 to fall, so that the pin shaft passes into the corresponding pin hole.

[0128] Figures 3-5 As can be seen, the lower end of the tension spring 22 is connected to the second side tie rod 27 via the lower hanging rod 35, and the upper end of the tension spring 22 is connected to the lifting frame 24 via the upper hanging rod 42. As mentioned earlier, the second side tie rod 27 is mounted on, for example, the third column 33 through the cooperation of the connecting pin 45 and the pin sleeve 44, so that the second side tie rod 27 constitutes a disengaged bracket.

[0129] Since the controlled part is the pin mechanism as described above, its basic motion is linear motion. The locking pin method is relatively common in the mechanical field. In the following embodiments, the basic structure of the control pin mechanism is described with a relatively easy-to-implement example.

[0130] In some embodiments, the mechanism includes a locking plate 31 and a locking plate shaft assembly 32 that hinges the locking plate 31 to the detached frame body. The axial direction of the locking plate shaft assembly 32 is the lifting direction of the lifting frame, so that the locking plate 31 and the locking plate shaft assembly 32 form a lever mechanism. The swing plane of the lever mechanism is approximately parallel to the swing plane of the grid frame. Correspondingly, the locking plate shaft of the locking plate shaft assembly 32 is equivalent to the lever hinge shaft of the lever mechanism.

[0131] Correspondingly, one end of the locking plate 31, which acts as a lever, supports the lifting frame 24; the other end of the locking plate 31 is the actuating end, which is used to withstand the actuation of the actuating part. When the actuating end of the locking plate 31 is actuated, the locking plate 31, which acts as a lever, swings, thereby causing the end of it used to support the lifting frame 24 to deviate and lose support for the lifting frame 24, resulting in the lifting frame 24 losing support and falling.

[0132] exist Figure 3As can be seen in the illustrated structure, the locking plate 31 is a plate structure as a whole, and the normal direction of this plate structure is the lifting direction of the lifting frame 24. The plate structure is beneficial to the stability of the lifting frame 24.

[0133] One end of the plate structure formed by the locking plate 31 is used to support the lifting frame 24, and the other end is the actuating end as described above. Due to the plate structure, in order to improve the accuracy of the impact, an impact plate 41 is provided at the actuating end. The impact plate 41 is obviously perpendicular to the locking plate 31 and perpendicular to the swing plane of the grid frame, thereby providing an impact surface that can expand the impact area. Figure 8 The probability of the actuator 54 successfully striking the target shown.

[0134] To improve the smoothness of the lifting frame 24's lifting, a lifting guide device is adapted for the lifting frame; correspondingly, the lifting guide device includes:

[0135] Guide sleeves installed on the detachment frame body and guide rods 26 installed on the lifting frame 24. Figure 3 In the structure shown, the guide sleeve is formed by the guide hole opened in the upper fixed seat 30, or it can be a tubular guide sleeve.

[0136] Accordingly, the mechanism is used to limit the guide rod 26. The bearing surface corresponding to the axial limitation of the rod is relatively small; in other words, the range of motion of the locking plate 31 does not need to be too large.

[0137] For guide rod 26, one or two can be configured. When two rods are configured, they naturally constrain the degree of freedom of the lifting frame 24 in the circumferential direction of the guide rod 26. When only one rod is configured, such as... Figure 3 As shown, a guide groove 38 is provided on the guide rod 26 along the direction of the guide rod 26, and a spring pin 29 is also provided. The pin head of the spring pin 29 extends into the guide groove 38 to prevent the guide rod 26 from rotating around its own axis.

[0138] The position of spring pin 29 is fixed, and correspondingly, in Figure 3 In the illustrated structure, a fixing plate 39 is provided, which is welded to, for example, a second side tie rod 27.

[0139] exist Figure 3 and Figure 4 In the illustrated structure, the lifting frame 24 is also equipped with a handle 25 to facilitate the reset of the lifting frame 24. Obviously, the reset position should be when the lifting frame 24 is at the upper stop position, at which point, for example, the upper pin 23 is in a suspended state.

[0140] like Figure 3In the illustrated structure, both the upper fixing seat 30 and the lower fixing seat 20 are composed of two plates. The holes on the plates form, for example, an upper pin hole 37 and a lower pin hole 34. Due to the limitation of the plate thickness, for example, the upper pin hole 37 is relatively short. In order to improve reliability, a pin sleeve can be installed to fit, for example, the upper pin hole 37 and / or the lower pin hole 34, as shown in the figure as the lower pin sleeve 36.

[0141] See Figure 6 ,as well as Figure 7 and Figure 8 As shown in the figure, the space frame includes:

[0142] The crossbar, as shown in the figure, is a crossbar body assembled from the boom unit 13;

[0143] The net fixing frame is located at each end of the crossbar, and extends downward relative to the crossbar. The net fixing frames are shown as a first net fixing frame 46 and a second net fixing frame 49, with the lengths of the two fixing frames corresponding to the vertical extension of the interception net.

[0144] To minimize damage to the intercepted trackless rubber-wheeled vehicles, the crossbars are made of fragile materials, such as fiberglass. When a vehicle impacts the mesh frame, the frame breaks, and the intercepting net functions solely as a barrier. As mentioned earlier, the intercepting net is preferably made of flexible mesh, thus effectively reducing damage to the trackless rubber-wheeled vehicles. Fiberglass is generally made of tempered glass; broken tempered glass will not produce sharp edges, preventing secondary injuries.

[0145] Accordingly, as mentioned earlier, the interception net uses a flexible mesh strip with a certain width, and the mesh surface of the strip is perpendicular to the direction of vehicle impact, thus having a relatively large interception area.

[0146] like Figure 6 As shown in the figure, the crossbar is formed by connecting two boom units 13. The boom units 13 are connected by clamping plates 16.

[0147] The clamping plate 16 can be two flat plates or a semi-enclosed grooved plate with a pair of opposing panels having screw holes or bolt holes for assembling the boom unit 13 using, for example, screws.

[0148] As mentioned earlier, when the interception device is in the open state, the space frame swings to the sidewall of the roadway on the first side without affecting the passageway's accessibility. In some embodiments, to reduce the space occupied in the roadway, the space frame is a folding type.

[0149] Accordingly, the boom units 13 of the crossbar are connected by pivoting units; an example of this can be seen in Figures 9-12In the structure shown, a set of connecting rods is provided between adjacent boom units 13. The two boom units 13 are connected by this set of connecting rods. Since the assembly method of each connecting rod is clearly shown in the figure, it can be understood based on some basic mechanical knowledge, so it will not be elaborated here.

[0150] Additionally, a drive mechanism is provided for folding the boom units 13 together, so that the space frame is in a folded state or unfolded for operation. As shown in the figure, the boom unit 13 is equipped with a tie rod 58, and the mechanism composed of connecting rods is driven by pulling the tie rod 58.

[0151] The mechanism formed by the connecting rods in the figure is a multi-bar mechanism with multiple moving components, such as the first connecting rod 59, the triangular rocker 65, and the component used to drive the pull rod 58, which constitutes a connecting rod. The pull rod 58 constitutes a typical connecting rod, the triangular rocker 65 has a rotational feature, and the first connecting rod 59 can constitute a rocker.

[0152] Regarding the selection of the swing drive device, there are three main methods. It should be noted that since the grid frame hardly supports any other components besides the interception net, its weight can be relatively small, and its drive method is relatively easy to implement.

[0153] In some embodiments, a component that outputs swing can be used directly. Such a component that can directly output swing is called a first swing drive device, such as a swing cylinder or a swing motor, which can directly output to the grid frame; the swing cylinder can be a swing air cylinder or a swing hydraulic cylinder.

[0154] As a second option, referred to as the second swing drive device, this second swing drive device can directly use a component capable of outputting rotation, such as a gear. In this case, the swing shaft of the space frame, such as... Figure 7 The support shaft 7 shown can form a gear shaft, on which a gear meshes with a rack, which is driven by a linear drive mechanism. This linear drive mechanism uses components capable of outputting linear motion, such as a linear motor (which can be replaced by an electric actuator), a hydraulic cylinder, or a pneumatic cylinder.

[0155] As a third option, referred to as the third swing drive device, this third option also employs components capable of outputting linear motion, such as a hydraulic cylinder or electric actuator, which forms a triangular mechanism with the space frame. Figure 1 and Figure 9 The drive mechanism 5 shown is a hydraulic cylinder.

[0156] Because the space frame has a relatively large extension length, it can extend from one side of the tunnel to the other. Under this condition, the space frame is prone to bending. In order to ensure that the space frame remains relatively straight, the main support has a support portion that extends further upward relative to the space frame; and provides tie rods or ropes for the inclined space frame to assist in suspending the space frame, so that the space frame has multiple suspension points to keep the space frame as straight as possible.

[0157] Accordingly, one end of the tie rod or rope is fixedly installed at the upper end of the support, and the other end is suspended from the middle and / or far end of the space frame; the far end is the end of the space frame away from the main support.

[0158] from Figure 1 and Figure 9 As can be seen in the illustrated structure, the space frame has at least two lifting points, one at the end of the space frame and the other at the middle of the space frame. In some embodiments, there may be more lifting points.

[0159] The relatively longer rope in the diagram is called the long suspension rope 15, and the relatively shorter rope is called the short suspension rope 14. Figure 9 In the structure shown, due to the use of a folding space frame, relatively short tie ropes, i.e., short suspension ropes 14, are used. Correspondingly, a support frame 64 is also provided in the middle of the space frame to provide a relatively high suspension point in the middle.

[0160] Furthermore, the connection between the pull rod or rope and the net frame is through a connection structure with a predetermined shearing force. When blocking a trackless rubber-wheeled vehicle, this connection structure will be broken open, so that the interception can be achieved using only the interception net as much as possible, while the relatively rigid part is detached.

[0161] Furthermore, the connection structure is a nylon snap-lock connection.

[0162] exist Figure 1 and Figure 9 In the illustrated structure, the main support has two parallel support bodies, namely the first column 2 and the second column 9 as shown in the figure. The first column 2 and the second column 9 share a frame and are connected as a whole by the main base plate 1 shown in the figure to improve the overall integrity. The second column 9 is hinged to the space frame, while the first column 2 is equipped with the swing drive device.

Claims

1. An interception device for stall protection of trackless rubber-tired vehicles, characterized in that, include: The main support, in its installed state, is located on the first side of the predetermined position in the tunnel; The auxiliary support, in the installed state, is located on the second side of the predetermined position in the roadway, and the second side and the first side are the left and right sides of the roadway respectively; The space frame is hinged to the main support at one end and has a connecting head at the other end; A connecting device is installed on the secondary support so that it connects with the connecting head when the grid structure is swung to a position where it is placed horizontally in the roadway. The second-side connector is provided on the connecting device for connecting the second-side energy absorber; An intercepting net, installed on the mesh frame, wherein a first-side connector for connecting to a first-side energy absorber is provided on a first-side side of the intercepting net or the first side of the mesh frame; and A swing drive device is installed on the side where the main support is located, and is used to drive the space frame to swing. The second connector is mounted on a detachable frame, which detaches from the sub-support when the intercepting net is impacted; the connection between the detachable frame and the second support is as follows: The second connection method is a pin sleeve connection, which is configured as follows: A connecting pin is provided on the sub-support, the connecting pin being located on the side of the sub-support opposite to the side where the energy absorber is located; a pin sleeve is provided that fits onto the connecting pin, and the detachment frame is mounted on the pin sleeve; the detachment frame includes: Detach the frame body; The connecting device, which cooperates with the connecting head to form a pin connection assembly; the detachable frame body is adapted to the pin connection assembly to form a lifting frame, the pin connection assembly comprising: A pin is mounted on the lifting frame and extends downwards; The mechanism restricts the lifting frame to a predetermined height detached from the frame body; The connecting head includes a pin hole and an actuating part that triggers the mechanism, causing the lifting frame to fall and the pin to pass through the pin hole.

2. The interception device according to claim 1, characterized in that, The lifting frame is equipped with a forced descent force application component.

3. The interception device according to claim 2, characterized in that, The forced descent force application component is a tension spring, one end of which is connected to the lifting frame and the other end is connected to the detached frame body.

4. The interception device according to claim 1, characterized in that, The mechanism includes a locking plate and a locking plate shaft assembly that hinges the locking plate to the detached frame body. The axial direction of the locking plate shaft assembly is the lifting direction of the lifting frame, so that the locking plate and the locking plate shaft assembly form a lever mechanism. Accordingly, one end of the locking plate supports the lifting frame; the other end of the locking plate is the actuating end, which is used to withstand the actuation of the actuating part.

5. The interception device according to claim 4, characterized in that, The actuating end includes an impact plate for intercepting the actuating part.

6. The interception device according to any one of claims 4 to 5, characterized in that, The lifting frame is equipped with a lifting guide device; The lifting guide device includes: Guide sleeves installed on the detachment frame body and guide rods installed on the lifting frame; The mechanism is used to define the guide rod.

7. The interception device according to claim 1, characterized in that, The pins are provided in pairs, forming an upper pin and a lower pin, so that the lifting frame has a predetermined vertical span; Accordingly, the pin hole has an upper pin hole and a lower pin hole.

8. The interception device according to claim 1, characterized in that, The lifting frame has a handle.

9. The interception device according to claim 1, characterized in that, The space frame includes: crossbar; The net body fixing frame is provided at each end of the crossbar, and the net body fixing frame extends downward relative to the crossbar.

10. The interception device according to claim 9, characterized in that, The crossbar is a fragile bar.

11. The interception device according to claim 10, characterized in that, The crossbar is made of fiberglass.

12. The interception device according to claim 10 or 11, characterized in that, The crossbar is composed of multiple boom units connected together.

13. The interception device according to claim 12, characterized in that, The boom units of the crossbar are connected by pivoting units; Accordingly, a drive mechanism is provided for driving the folding of the boom units so that the space frame is in a folded state or unfolded for operation.

14. The interception device according to claim 1, characterized in that, The interception net can be a rigid mesh frame or a flexible mesh.

15. The interception device according to claim 14, characterized in that, The flexible net is a net body formed by organic or inorganic mesh belts.

16. The interception device according to claim 15, characterized in that, The flexible mesh is made of nylon, aramid, or ultra-high molecular weight polyethylene.

17. The interception device according to any one of claims 14 to 16, characterized in that, The first connector is directly connected to the interception net.

18. The interception device according to claim 1, characterized in that, The swing drive device is: The first swing drive device is a swing cylinder or a swing motor, and its output is connected to the space frame; or The second swing drive device is a gear and rack mechanism, with the space frame mounted on the main support via a gear shaft, and the corresponding rack driven by a linear drive mechanism; or The third swing drive device is a hydraulic cylinder or an electric push rod, which forms a triangular mechanism with the space frame.

19. The interception device according to claim 1, characterized in that, The main support has a support portion that extends further upward relative to the space frame; Provide tie rods or ropes for the inclined space frame to assist in suspending the space frame; Accordingly, one end of the tie rod or rope is fixedly installed at the upper end of the support, and the other end is suspended from the middle and / or far end of the space frame; the far end is the end of the space frame away from the main support.

20. The interception device according to claim 19, characterized in that, The connection between the tie rod or rope and the space frame is a connection through a connection structure with a predetermined shearing force.

21. The interception device according to claim 20, characterized in that, The connection structure is a nylon snap fastener connection.

22. The interception device according to claim 1, characterized in that, The main support has two parallel support bodies, one of which is used to hinge with the grid frame, and the other support body is used to install the swing drive device.

23. An interception system, characterized in that, It includes the interception device according to any one of claims 1 to 22, and further includes energy absorbers located on both sides of the roadway, the energy absorbers being connected to the first side connector or the second side connector respectively.

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