Monorail crane anti-runaway device and control method thereof
By installing a wire rope device on the monorail and using speed detection and hook connection, the monorail trolley can be slowly stopped, solving the problem of the monorail being difficult to stop when running in an inclined tunnel, and achieving safe and effective buffer braking.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XIANGTAN HENGXIN IND
- Filing Date
- 2024-04-07
- Publication Date
- 2026-07-21
AI Technical Summary
In existing technologies, monorail cranes are prone to runaway due to overloading or insufficient driving force when running in inclined tunnels. Existing braking systems are unable to effectively prevent this, posing a serious safety hazard.
The system employs a two-wire rope device. The speed of the monorail is detected by a speed detection device. When the set threshold is reached, the hook is lowered to the designated position and docked with the hook assembly. The wire rope braking device gradually brakes the wire rope to slowly stop the locomotive, using the buffering effect of the wire rope to prevent runaway.
It effectively prevents monorail malfunctions, reduces locomotive damage, achieves buffer braking, and protects equipment safety.
Smart Images
Figure CN118124632B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of monorail anti-runaway technology, specifically relating to a monorail anti-runaway device and its control method. Background Technology
[0002] A monorail is a locomotive that runs on a single track in underground coal mines. It consists of a series of lifting vehicles with various functions connected together and pulled along the track by traction equipment. It is a commonly used auxiliary transportation device in underground coal mines. When a monorail is running on an inclined track, overloading, insufficient driving pressure, or other reasons may cause the locomotive to run out of control in the inclined track, posing a huge safety hazard.
[0003] In the existing technology, when a monorail rig runs off, it can only be braked by the monorail rig's own braking system. The root cause of the runoff is that the locomotive's downward force is greater than the locomotive's own braking force. Obviously, the locomotive's own braking system is insufficient to brake the out-of-control monorail rig. Therefore, it is necessary to design a blocking device for monorail rig runoff. Summary of the Invention
[0004] The purpose of this invention is to provide a monorail anti-runaway device and its control method, which solves the problem that it is difficult to block monorail runaway when it runs away in the prior art.
[0005] The technical solution provided by this invention is to provide a monorail anti-runaway device, comprising:
[0006] Two steel wire ropes are arranged along the length of the monorail and on both sides of the monorail. One end of each steel wire rope is equipped with a hook and the other end is equipped with a rope storage device.
[0007] Multiple wire rope braking devices are arranged along the wire rope.
[0008] A hook lowering device, which is connected to the hook component, is used to lower the hook component to a designated position;
[0009] The hook docking component is fixedly installed on both sides of the two ends of the monorail crane. It is used to dock with the hook component when the speed of the monorail crane reaches or exceeds the set speed threshold so as to drive the two steel wire ropes to move together.
[0010] The speed detection device is electrically connected to a first control valve connected to the hook lowering device and to a second control valve connected to the wire rope braking device. The speed detection device is used to detect the running speed of the monorail.
[0011] In one possible embodiment, the wire rope braking device includes at least three pairs of wire rope braking devices, the same number of which are evenly arranged on each wire rope; the wire rope braking device includes a fixed frame, a brake cylinder, a brake elastic element, a movable seat, and a fixed seat, wherein a groove for accommodating the wire rope is formed between the movable seat and the fixed seat; the brake elastic element is used to drive the movable seat closer to the fixed seat to clamp the wire rope; the brake cylinder is used to compress the brake elastic element to move the movable seat away from the fixed seat to release the brake.
[0012] In one possible embodiment, the braking elastic element includes a disc spring assembly or a compression spring.
[0013] In one possible embodiment, the hook lowering device includes a rope, a pulley, and a lowering control device connected to the hook member; the rope is connected to the lowering control device via the pulley, and when the lowering control device releases the lock on the rope, the hook member moves down to a designated position by its own weight to engage with the hook docking member.
[0014] In one possible embodiment, the lowering control device includes a push rod mechanism and a first control valve electrically connected to the push rod mechanism. The non-hooked connection end of the rope is provided with a collar, which is sleeved on the push rod of the push rod mechanism. When the first control valve receives a control signal, it controls the push rod to be pulled out from the collar of the rope.
[0015] In one possible embodiment, the anti-runaway device further includes a guide structure comprising an upper guide wheel, a lower guide wheel, and a guide ramp. The hook is connected to the wire rope via a chain. The upper guide wheel is positioned above the chain at a first distance from the hook. The lower guide wheel is positioned below the chain at a second distance from the hook, the first distance being less than the second distance. The inclined edge of the guide ramp faces the hook. When the hook falls, it is guided by the ramp to move to a designated position.
[0016] In one possible embodiment, limit plates are provided on both sides of the inclined side of the guide plate, and the limit plates are used to limit the falling hook.
[0017] In one possible embodiment, the hook connection is two rod structures fixed on both sides of the front end of the monorail in the direction of travel.
[0018] In one possible embodiment, the runaway prevention device also includes a plurality of pressure pulleys arranged along the wire rope.
[0019] The present invention also provides a control method for a monorail anti-runaway device, comprising:
[0020] The locomotive's operating speed is detected by a speed detection device;
[0021] When the locomotive reaches or exceeds the set speed threshold, the main control module sends a signal to the first control valve connected to the hook lowering device and the second control valve connected to the wire rope braking device. After receiving the signal, the first control valve controls the hook to move to the designated position, and the second control valve controls the wire rope braking device to brake the wire rope.
[0022] When the monorail passes the designated position, the hook docking piece set on the monorail docks with the hook and drives the two steel wire ropes to move together;
[0023] When the wire rope braking device brakes, among the multiple pairs of wire rope braking devices on the two wire ropes, the first pair of wire rope braking devices brakes for a set time, and the second pair of wire rope braking devices brakes again to form slow braking.
[0024] The beneficial effects of this invention are as follows: By using two wire ropes with hooks to pull the monorail crane and cooperating with a wire rope braking device to brake the wire ropes, the monorail crane locomotive is stopped. The wire rope braking device can slowly absorb energy by braking the wire rope, which plays a good buffering role. This stopping method causes less damage to the locomotive and has a good braking effect. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1 This is an overall structural diagram of a monorail anti-runaway device provided in an embodiment of the present invention.
[0027] Figure 2 This is a structural diagram of a monorail anti-runaway device provided in an embodiment of the present invention, installed on a monorail.
[0028] Figure 3 This is a partial schematic diagram of the hook falling when the monorail anti-runaway device provided in an embodiment of the present invention is dropped.
[0029] Figure 4 This is an installation diagram of the hook lowering device of the monorail anti-runaway device provided in an embodiment of the present invention.
[0030] Figure 5This is a schematic diagram of the lowering control device of the monorail anti-runaway device provided in an embodiment of the present invention.
[0031] Figure 6 yes Figure 1 Sectional view AA (without the pressure sheave device).
[0032] In the diagram: 1. Wire rope braking device; 101. Brake cylinder; 102. Braking elastic element; 103. Fixed frame; 104. Fixed seat; 105. Movable seat; 2. Rope support device; 3. Rope storage device; 4. Hook lowering device; 43. Lowering control device; 431. Push rod mechanism; 432. First control valve; 433. Collar; 5. Guide structure; 51. Upper guide wheel; 52. Lower guide wheel; 53. Guide inclined plate; 54. Limiting plate; 6. Hook; 7. Chain; 8. Wire rope; 9. Hook docking piece; 10. Monorail; 11. Track. Detailed Implementation
[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0034] In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with an embodiment or example that are included in at least one embodiment or example of the present invention. In this invention, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0035] refer to Figures 1-3This embodiment provides a monorail anti-runaway device, which includes two steel wire ropes 8 arranged on both sides of the monorail 10's running roadway, along the monorail's running direction. In one possible embodiment, the two steel wire ropes 8 are arranged in an inclined roadway underground in a coal mine. A hook 6 is provided at one end of each steel wire rope (the downward-facing end in the inclined roadway arrangement), and a rope storage device 3 is provided at the other end. The hook 6 is positioned above the track 11 via a hook lowering device 4, and the steel wire rope 8 is wound around the rope storage device 3, which is fixed to the walls on both sides of the roadway. Multiple steel wire rope braking devices 1 are provided on the steel wire ropes 8 to brake the two steel wire ropes 8. The combined braking effect of the multiple steel wire rope braking devices 1 increases the braking force of the steel wire ropes. A hook docking member 9 is provided on the monorail 10 for docking with the hook 6. A speed detection device is installed along the direction of the wire rope 8 to detect the running speed of the monorail 10.
[0036] In other words, when the speed detection device detects that the speed of the monorail 10 reaches or exceeds a set value (this value determines the speed of the locomotive, which can be set to 4 m / s), the main control module obtains the speed signal and sends a signal to the hook lowering device 4 and the wire rope braking device 1. The hook lowering device 4 controls the hook 6 to be lowered a set distance so that the hook 6 moves down to the designated position. When the monorail 10 of the trolley runs to the designated position on the track 11, the hook docking piece 9 installed on it docks with the hook 6, thereby driving the two wire ropes 8 to move together. The wire rope braking device 1 brakes the wire ropes 8, that is, it uses the braked wire ropes 8 to slowly support the locomotive and prevent it from continuing to run, thus achieving the purpose of slowing down the locomotive.
[0037] This runaway prevention device allows the monorail 10 to travel a certain distance on the track 11 before stopping, effectively protecting the locomotive and preventing damage. It also provides a buffer braking effect.
[0038] refer to Figure 6In some possible embodiments, the wire rope braking device 1 includes at least three pairs of wire rope braking devices 1, with two wire rope braking devices 1 at the same position on two wire ropes 8 forming a pair. The number of wire rope braking devices 1 on each wire rope 8 is the same and they are evenly arranged. The wire rope braking device 1 includes a fixed frame 103, a brake cylinder 101, a brake elastic element 102, a movable seat 105, and a fixed seat 104. A groove for accommodating the wire rope 8 is formed between the movable seat 105 and the fixed seat 104. The brake elastic element 12 is used to drive the movable seat 104 closer to the fixed seat 104 to clamp the wire rope. The brake cylinder is used to compress the brake elastic element 102 to move the movable seat 105 away from the fixed seat 104 to release the brake. Here, the brake elastic element 102 includes a sleeve and a disc spring assembly or spring disposed in the sleeve. The piston rod of the wire rope braking device 1 is connected to the movable seat 105. The disc spring assembly or spring is used to automatically push the movable seat 105 closer to the fixed seat 104 when the cylinder is depressurized. The fixing frame 103 is fixed to the beam set on the roadway.
[0039] refer to Figure 4 In some possible embodiments, the hook lowering device 4 includes a rope 41 connected to the hook 6, a pulley 42, and a lowering control device 43; the rope 41 is guided and connected to the lowering control device 43 through two pulleys 42 arranged side by side; when the lowering control device 43 releases the lock on the rope 41, the hook 6 moves down to the designated position by its own weight to cooperate with the hook docking part 9.
[0040] refer to Figure 4 and Figure 5 In some possible embodiments, the lowering control device 43 includes a push rod mechanism 431 and a first control valve 432 electrically connected to the push rod mechanism 431. A collar 433 is provided at the non-hook connection end of the rope 43, and the collar 433 is fitted onto the push rod of the push rod mechanism 431. When the first control valve 432 receives a control signal, it controls the push rod to be pulled out from the collar 433 of the rope. Two lowering control devices 43 each control the lowering of one hook member 6.
[0041] In some possible embodiments, the push rod mechanism 431 is configured as a cylinder or an electric push rod.
[0042] refer to Figure 1 and Figure 3In some possible embodiments, the monorail anti-runaway device further includes a guide structure 5, which includes an upper guide wheel 51, a lower guide wheel 52, and a guide ramp 53. Optionally, the hook 6 is connected to the wire rope 8 via a chain 7 or other flexible ropes or U-shaped clips. The upper guide wheel 51 is positioned above the chain 7 at a first distance a from the hook 6; the lower guide wheel 52 is positioned below the chain 7 at a second distance b from the hook 6, where the first distance a is less than the second distance b; the inclined side of the guide ramp 53 faces the hook 6; when the hook 6 falls, it is guided by the guide ramp 53 to move to the designated position.
[0043] In some possible embodiments, limiting plates 54 are provided on both sides of the inclined surface of the guide plate 53. The hook 6 swings between the two limiting plates 54 under the action of gravity. The guiding action of the two limiting plates 54 keeps the opening of the hook 6 facing the direction of the monorail, so that the hook docking piece 9 can be inserted into the opening of the hook 6. The distance between the two limiting plates 54 is slightly larger than the width of the hook 6.
[0044] In some possible embodiments, the rope storage device 3 is configured as a rope winding drum fixed to the tunnel wall. The wire rope 8 is wound around the rope storage device 3.
[0045] refer to Figure 3 and Figure 4 In some possible embodiments, the hook docking member 9 is two rod structures fixed on both sides of the front end of the monorail in the direction of travel, and is inserted into the notch of the hook member 6 through the rod structure.
[0046] refer to Figure 1 In some possible embodiments, the wire rope 8 along the line is guided by a plurality of sheave pulley devices 2.
[0047] refer to Figure 1 , Figure 5 The present invention also provides a control method for a monorail anti-runaway device, comprising:
[0048] S01: The locomotive's operating speed is detected by a speed detection device;
[0049] S02: When the locomotive reaches or exceeds the set speed threshold, the main control module sends a signal to the first control valve, which is electrically connected to the lowering control device, and the second control valve, which is connected to the wire rope braking device. After receiving the signal, the first control valve controls the hook 6 to move to the designated position, and after receiving the signal, the second control valve controls the wire rope braking device 1 to brake the wire rope 8.
[0050] S03: When the monorail passes through the designated position, the hook docking part 9 set on the monorail connects with the hook part 6 and drives the two wire ropes 8 to move together.
[0051] Among the multiple pairs of wire rope braking devices 1 on the two wire ropes 8, the first pair of wire rope braking devices 1 brakes for a set time, and the second pair of wire rope braking devices 1 brakes again to form slow braking.
[0052] By using a wire rope braking device 1 with delayed braking, the braking force of the wire rope is gradually increased, thereby achieving the purpose of buffering and blocking the locomotive.
[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or modifications can be made to some or all of the technical solutions, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A monorail anti-runaway device, characterized in that, include: Two steel wire ropes are arranged on both sides of the monorail crane running roadway. One end of the steel wire rope is equipped with a hook, and the other end is equipped with a rope storage device. Multiple wire rope braking devices are arranged along the wire rope. A hook lowering device, which is connected to the hook component, is used to lower the hook component to a designated position; The hook docking component is fixedly installed on both sides of the two end components of the monorail crane. It is used to dock with the hook component when the speed of the monorail crane reaches or exceeds the set speed threshold so as to drive the two steel wire ropes to move together. A speed detection device is electrically connected to a first control valve of the hook lowering device and to a second control valve of the wire rope braking device. The speed detection device is used to detect the running speed of the monorail. The wire rope braking device includes at least three pairs of wire rope braking devices, the number of which is the same and evenly arranged on each wire rope; the wire rope braking device includes a fixed frame, a brake cylinder, a brake elastic element, a movable seat, and a fixed seat, and a groove for accommodating the wire rope is formed between the movable seat and the fixed seat. The braking elastic element is used to drive the movable seat closer to the fixed seat to clamp the wire rope; the braking cylinder is used to compress the braking elastic element to move the movable seat away from the fixed seat to release the brake; The hook lowering device includes a rope, a pulley, and a lowering control device connected to the hook component; the rope is connected to the lowering control device via the pulley, and when the lowering control device releases the lock on the rope, the hook component moves down to a designated position by its own weight to engage with the hook docking component; The lowering control device includes a push rod mechanism and a first control valve electrically connected to the push rod mechanism. The non-hooked connection end of the rope is provided with a collar, which is sleeved on the push rod of the push rod mechanism. When the first control valve receives a control signal, it controls the push rod to be pulled out from the collar of the rope. It also includes a guide structure, which comprises an upper guide wheel, a lower guide wheel, and a guide ramp. The hook is connected to the wire rope via a chain. The upper guide wheel is positioned above the chain at a first distance from the hook. The lower guide wheel is positioned below the chain at a second distance from the hook, where the first distance is less than the second distance. The inclined edge of the guide ramp faces the hook. When the hook falls, it is guided by the guide ramp to move to a designated position. Limiting plates are provided on both sides of the inclined side of the guide plate. When the hook falls, it is positioned between the two limiting plates, and the limiting plates are used to limit the falling hook.
2. The monorail anti-runaway device according to claim 1, characterized in that, The braking elastic element includes a disc spring assembly or a compression spring.
3. The monorail anti-runaway device according to claim 1, characterized in that, The hook connection is a structure consisting of two rods fixed on both sides of the front end of the monorail crane in the direction of travel.
4. The monorail anti-runaway device according to claim 1, characterized in that, It also includes multiple pressure pulleys arranged along the wire rope.
5. A control method for a monorail anti-runaway device, employing the monorail anti-runaway device as described in any one of claims 1-4, characterized in that, include: The locomotive's operating speed is detected by a speed detection device; When the locomotive reaches or exceeds the set speed threshold, the main control module sends a signal to the first control valve connected to the hook lowering device and the second control valve connected to the wire rope braking device. After receiving the signal, the first control valve controls the hook to move to the designated position, and the second control valve controls the wire rope braking device to brake the wire rope. When the monorail crane reaches the designated position, the hook docking piece set on the monorail crane docks with the hook and drives the two steel wire ropes to move together; When the wire rope braking device brakes, among the multiple pairs of wire rope braking devices on the two wire ropes, the first pair of wire rope braking devices brakes for a set time, and the second pair of wire rope braking devices brakes again to form a buffer braking.