Anti-sliding device for monorail crane

Abstract

The utility model provides an anti-sliding device for a monorail crane. The anti-sliding device comprises at least one pair of flexible energy absorbers, a traction steel wire rope, a blocking net and a rope winding and unwinding device, the flexible energy absorbers are symmetrically installed on the ground on the two sides of a monorail crane rail and used for providing a flexible blocking function when a monorail crane locomotive is subjected to sliding down. The blocking net is arranged below the monorail crane rail, the two ends of the blocking net are connected with the flexible energy absorbers through the traction steel wire ropes correspondingly, and the blocking net is used for blocking when the monorail crane locomotive runs down; a traction steel wire rope is led out from each flexible energy absorber, the traction steel wire ropes are connected with the corresponding ends of the blocking net after being guided by the guide devices, and the traction steel wire ropes are used for controlling the flexible energy absorbers to act when the monorail crane collides with the blocking net; the blocking net is connected with a rope winding and unwinding device through a pull rope, and the rope winding and unwinding device is used for controlling lifting of the blocking net. And when the monorail crane locomotive runs down, the monorail crane locomotive can be effectively intercepted and slowed down, so that the locomotive is prevented from derailing or collision accidents.

Description

Technical Field

[0001] The utility model belongs to the technical field of monorail crane locomotive runaway blocking devices, in particular to a monorail crane locomotive runaway prevention device. Background Art

[0002] Monorail cranes, as crucial auxiliary transport equipment in modern coal mines, face serious safety risks during inclined tunnel transportation. When a monorail crane loses control due to a brake system failure, control malfunction, or other unexpected factors, a high-speed runaway accident can occur, seriously threatening the lives of operators and mine production facilities.

[0003] Currently, underground monorail crane technology for preventing runaway vehicles remains largely undeveloped. Existing safety protection technologies primarily focus on ground rail transport equipment, such as the vehicle-blocking systems for rubber-wheeled vehicles and railcars. For example, CN107054400B proposes a progressive buffer energy absorber, which utilizes steel wire ropes and buffer devices installed on both sides of the ground track to achieve safe control of ground rail vehicles.

[0004] However, the special operating environment of the monorail crane poses a huge challenge to existing technologies: the monorail crane locomotive runs on a single track in the air, and the space above is restricted by the track and is extremely narrow; there are major obstacles in the physical space and technical feasibility of installing protective devices on both sides of the tunnel; traditional ground protection systems are difficult to directly transplant to the underground monorail crane transportation environment.

[0005] Therefore, there is an urgent need to design a special device to prevent runaway vehicles for the specific operating conditions of monorail crane locomotives. Utility Model Content

[0006] The purpose of the utility model is to solve the above problems and provide a monorail crane anti-runaway device, which can stop the monorail crane running in a high-altitude narrow environment.

[0007] To achieve the above objectives, the technical solution adopted by the present invention is: a monorail crane anti-runaway device, comprising: at least one pair of flexible energy absorbers, a traction wire rope, a blocking net and a rope retracting and releasing device;

[0008] The flexible energy absorber is symmetrically mounted on the ground on both sides of the monorail crane track to provide a flexible blocking function when the monorail crane locomotive runs away;

[0009] The blocking net is arranged below the monorail crane track, and its two ends are respectively connected to the flexible energy absorber through the traction wire rope. The blocking net is used to intercept the monorail crane when it runs away;

[0010] Each of the flexible energy absorbers leads to a traction wire rope, which is connected to the corresponding end of the barrier after being guided by a guide device. The traction wire rope is used to control the movement of the flexible energy absorber when the monorail crane hits the barrier.

[0011] The blocking net is connected to the rope-retracting device via a pull rope, and the rope-retracting device is used to control the lifting and lowering of the blocking net.

[0012] In some possible embodiments, the guide device includes a first guide wheel assembly installed on the ground and a second guide wheel assembly fixedly connected under a mounting bracket. The mounting bracket is installed in the space above the track. Each traction wire rope is guided by the first guide wheel assembly and the second guide wheel assembly in turn and then connected to the corresponding end of the barrier.

[0013] In some possible embodiments, a limiting wheel assembly is further provided under the mounting bracket. The traction wire rope is led out from the second guide wheel assembly and then passes through the limiting wheel assembly. The limiting wheel assembly is used to limit the position of the traction wire rope to prevent it from falling off.

[0014] In some possible embodiments, the traction wire rope is further connected to a wire rope limiting clamp after passing through the limiting wheel assembly, and the limiting clamp is used to prevent the traction wire rope from retracting.

[0015] In some possible embodiments, the barrier net includes at least two barrier steel ropes, and two adjacent barrier steel ropes are connected by multiple connecting steel ropes to form an interception surface.

[0016] In some possible embodiments, the barrier net includes at least two barrier steel ropes, a sleeve is provided in the middle of each barrier steel rope, and two adjacent sleeves are connected by a plurality of chains to form an interception surface.

[0017] In some possible embodiments, a rope hanging rack is provided above the monorail hanging track, a lifting lug or pulley is provided under the rope hanging rack, a rope is connected to the barrier net, and the rope is connected to the rope retracting and releasing device after being guided by the lifting lug or pulley.

[0018] In some possible embodiments, the rope retracting and releasing device is configured as a winch.

[0019] The beneficial effects of the utility model are as follows: through the combined use of flexible energy absorbers, guide devices, blocking nets and traction wire ropes, the monorail crane locomotive running on a single track in the air can be blocked. When the monorail crane locomotive runs away, its speed can be effectively intercepted and slowed down to prevent the locomotive from derailing or collision accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1This is a schematic diagram of the three-dimensional structure of a monorail crane anti-runaway device provided by one embodiment of the utility model.

[0021] Figure 2 for Figure 1 A partial enlarged view of point a in the middle.

[0022] The text markings in the figure indicate: 1. Flexible energy absorber; 2. First guide wheel assembly; 3. Traction wire rope; 4. Second guide wheel assembly; 5. Limiting wheel assembly; 6. Wire rope limiting card; 7. Blocking net; 8. Pull rope hanging bracket; 9. Pull rope; 10. Winch fixing bracket; 11. Rope retracting and releasing device; 12. Track; 13. Mounting bracket. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0024] In modern underground mining transportation systems, monorail cranes are an efficient and flexible mode of transport, and their safety is directly related to production operations and the lives of miners. However, the complex geological environment, extremely narrow operating space, and changing underground working conditions make it difficult to intercept monorail cranes with traditional safety protection technologies. The space above a single track is severely limited by the track itself, and the geological structure and working environment on both sides of the tunnel make it difficult to install traditional protective devices.

[0025] Based on the unique environment of underground coal mine monorail cranes operating on a single I-shaped track, the inventors have developed an innovative safety protection solution. By cleverly placing a barrier net beneath the track and utilizing flexible energy absorbers, traction wire ropes, guides, and a retractable and release rope control system, they have constructed a barrier net that can be quickly closed in emergencies while maintaining normal operation without disrupting surface equipment transport. Specific implementations are as follows.

[0026] like Figure 1 As shown, this embodiment provides a monorail crane anti-runaway device, including at least a pair of flexible energy absorbers 1, a traction wire rope 3, a barrier net 7 and a rope retracting and releasing device 11.

[0027] The flexible energy absorbers 1 are symmetrically mounted on the ground on either side of the monorail track 12. In this embodiment, the flexible energy absorbers 1 utilize prior art CN107054400B, providing a progressive buffering energy absorber. The lower shell of the flexible energy absorber 1 is buried underground, with a traction wire rope 3 wound around the upper portion. This provides a flexible barrier in the event of a monorail runaway. In this embodiment, two such flexible energy absorbers 1 are deployed on either side of the roadway.

[0028] In some embodiments, a barrier net 7 is disposed beneath the track 12, with its ends connected to corresponding flexible energy absorbers 1 via traction wire ropes 3 disposed on either side. The barrier net 7 is used to intercept a monorail crane as it runs. The barrier net 7 primarily blocks the front end of the monorail crane in its direction of travel.

[0029] Each flexible energy absorber 1 leads to a traction wire rope 3, which is guided by a guide device and connected to the corresponding end of the barrier 7. The traction wire rope 3 is used to control the operation of the flexible energy absorber 1 when the monorail crane hits the barrier 7. In other words, when the monorail crane hits the barrier, the traction wire rope 3 is guided by the guide device to pull the flexible energy absorber 1 on the ground, and the flexible energy absorber 1 absorbs the impact energy, thereby blocking the monorail crane.

[0030] In some implementations, the barrier 7 is connected to a rope-retracting device 11 via a pull rope 9. The rope-retracting device 11 controls the raising and lowering of the barrier 7. Specifically, the rope-retracting device 11 maintains the barrier 7 in a normally closed position. When a locomotive passes through, unless a runaway accident occurs, the barrier 7 is lowered by the rope-retracting device 11, allowing the locomotive to pass through the space formed by the traction wire ropes 3 on both sides and the barrier 7, allowing normal passage. If a runaway accident occurs, the rope-retracting device 11 does not operate, and the monorail crane will collide with the barrier, being intercepted by the barrier 7.

[0031] In some possible embodiments, the guide device includes a first guide wheel assembly 2 installed on the ground and a second guide wheel assembly 4 fixedly connected to the bottom of the mounting bracket 13. The mounting bracket 13 is installed in the space above the track. Each traction wire rope 3 is guided by the first guide wheel assembly 2 and the second guide wheel assembly 4 in turn and then connected to the corresponding end of the barrier 7. The first guide wheel assembly 2 includes a first guide wheel and a first guide wheel mounting frame, and the first guide wheel mounting frame is fixed on the ground. The second guide wheel assembly 4 includes a second guide wheel and a second guide wheel mounting frame, and the second guide wheel mounting frame is fixed under the mounting bracket. The traction wire rope 3 drawn out from each flexible energy absorber 1 is guided and reversed by the first guide wheel and the second guide wheel in turn and then connected to the corresponding end of the barrier 7. In this embodiment, each traction wire rope 3 is equipped with a set of first guide wheel assembly 2 and second guide wheel assembly 4.

[0032] Furthermore, a limiting wheel assembly 5 is provided below the mounting bracket, and the corresponding traction wire rope 3 is led out from the second guide wheel assembly 4 and then passes through the limiting wheel assembly 5. Optionally, the limiting wheel assembly 5 includes a mounting frame and a drum disposed within the mounting frame, and the corresponding traction wire rope 3 is led out from the space between the mounting frame and the drum. The limiting wheel assembly 5 is used to limit the position of the traction wire rope 3 to prevent the traction wire rope 3 from falling off the second guide wheel.

[0033] In some embodiments, the traction wire rope 3 is further connected to a wire rope stopper 6 after passing through the stop wheel assembly 5. Optionally, the wire rope stopper 6 is configured as a sleeve structure consisting of two halves that are clamped onto the wire rope via fasteners. The size of the wire rope stopper 6 should be larger than the opening between the mounting frame and the drum. The wire rope stopper is used to prevent the traction wire rope 3 from retracting. Specifically, when the barrier net 7 is lowered, it prevents the traction wire rope 3 on one side from pulling the barrier net 7 upward under the action of gravity, thereby affecting the passage of the locomotive.

[0034] In some embodiments, the blocking net 7 includes at least two blocking steel ropes, and two adjacent blocking steel ropes are connected by multiple connecting steel ropes to form a mesh interception surface.

[0035] In other embodiments, the barrier net 7 includes at least two barrier wire ropes, each of which is provided with a sleeve in the middle, and two adjacent sleeves are connected by a plurality of chains to form a mesh interception surface. The sleeve structure can make the mesh interception surface smoother.

[0036] In some embodiments, both ends of each arresting steel wire rope are arranged in a ring shape, and the connecting end of each traction steel wire rope 3 and the arresting steel wire rope is also arranged in a ring shape. The ring structure of the arresting steel wire rope on the same side is interlocked with the ring structure of each traction steel wire rope 3.

[0037] In some implementations, a rope hanger 8 is provided above the monorail locomotive track, and a lifting lug or pulley is provided under the rope hanger 8. A rope 9 is connected to the top of the barrier 7, and the rope 9 is connected to the rope retracting device 11 after being guided by the lifting lug or pulley.

[0038] Optionally, the rope retracting and releasing device 11 is configured as a winch. A winch mounting frame 10 is provided above the monorail crane track, and the winch is fixed to the winch mounting frame 10. The winch controls the retraction and release of the pull rope, thereby achieving the raising and lowering of the barrier net 7. The pull rope connected to the winch is an ordinary thin steel wire rope, which can break when the monorail crane hits the barrier net.

[0039] When this embodiment is used specifically, during normal operation, the barrier net 7 is controlled to be lowered by the rope-retracting device 11, and the locomotive can safely pass through the traction wire ropes 3 on both sides; once a runaway vehicle accident occurs, the rope-retracting device 11 keeps the barrier net 7 closed, and the ground flexible energy absorber 1 is pulled by the traction wire rope 3 to achieve precise interception of the locomotive and gradual dissipation of the impact energy.

[0040] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0041] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without improvement, should be regarded as the scope of protection of the present utility model.

Claims

1. A monorail crane anti-runaway device, characterized in that: include: At least one pair of flexible energy absorbers, traction wire rope, barrier net and rope retracting and releasing device; The flexible energy absorber is symmetrically mounted on the ground on both sides of the monorail crane track to provide a flexible blocking function when the monorail crane locomotive runs away; The blocking net is arranged below the monorail crane track, and its two ends are respectively connected to the flexible energy absorber through the traction wire rope. The blocking net is used to intercept the monorail crane when it runs away; Each of the flexible energy absorbers leads to a traction wire rope, which is connected to the corresponding end of the barrier after being guided by a guide device. The traction wire rope is used to control the movement of the flexible energy absorber when the monorail crane hits the barrier. The blocking net is connected to the rope-retracting device via a pull rope, and the rope-retracting device is used to control the lifting and lowering of the blocking net.

2. The monorail crane anti-runaway device according to claim 1, characterized in that: The guide device includes a first guide wheel assembly installed on the ground and a second guide wheel assembly fixedly connected under the mounting bracket. The mounting bracket is installed in the space above the track. Each traction wire rope is guided by the first guide wheel assembly and the second guide wheel assembly in turn and then connected to the corresponding end of the barrier.

3. The monorail crane anti-runaway device according to claim 2, characterized in that: A limiting wheel assembly is also provided below the mounting bracket. The traction wire rope is led out from the second guide wheel assembly and then passes through the limiting wheel assembly. The limiting wheel assembly is used to limit the position of the traction wire rope to prevent it from falling off.

4. The monorail crane anti-runaway device according to claim 3, characterized in that: The traction wire rope is further connected to a wire rope limiting card after passing through the limiting wheel assembly, and the wire rope limiting card is used to prevent the traction wire rope from retracting.

5. The monorail crane anti-runaway device according to claim 1, characterized in that: The blocking net includes at least two blocking steel wire ropes, and two adjacent blocking steel wires are connected by multiple connecting steel wire ropes to form an interception surface.

6. The monorail crane anti-runaway device according to claim 1, characterized in that: The barrier net includes at least two barrier steel ropes, a sleeve is provided in the middle of each barrier steel rope, and two adjacent sleeves are connected by multiple chains to form an interception surface.

7. The monorail crane anti-runaway device according to any one of claims 5 or 6, characterized in that: A rope hanging rack is also provided above the monorail hanging track, a lifting lug or pulley is provided below the rope hanging rack, a rope is connected to the barrier net, and the rope is connected to the rope retracting and releasing device after being guided by the lifting lug or pulley.

8. The monorail crane anti-runaway device according to any one of claims 1 to 6, characterized in that: The rope retracting and releasing device is configured as a winch.

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