Anti-sliding device for monorail crane

Abstract

The invention provides a monorail crane anti-sliding device. The monorail crane 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 invention belongs to the technical field of monorail crane locomotive runaway blocking devices, and specifically relates to a monorail crane locomotive runaway prevention device. Background Art

[0002] As an important auxiliary transportation equipment in modern coal mines, monorail cranes face serious safety hazards in the process of inclined tunnel transportation. When a monorail crane loses control due to a brake system failure, control failure or other unexpected factors, a high-speed runaway accident may occur, seriously threatening the lives of operators and mine production facilities.

[0003] At present, underground monorail suspension and anti-runaway technology is still in a blank stage. Existing safety protection technologies are mainly concentrated on ground rail transportation equipment, such as the blocking system of rubber-wheeled vehicles and rail-carrying vehicles. For example, CN107054400B provides a progressive buffer energy absorber, which realizes the safety control of ground rail vehicles by installing steel wire ropes and buffer devices on both sides of the ground track.

[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 limited by the track and is extremely narrow; there are major obstacles in terms of physical space and technical feasibility to installing protective devices on both sides of the tunnel; and 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 for preventing runaway vehicles under specific operating conditions of monorail crane locomotives. Summary of the invention

[0006] The purpose of the present invention 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 installed 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, and the blocking net is used to intercept the monorail crane locomotive 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, and the traction wire rope is used to control the action of the flexible energy absorber when the monorail crane hits the barrier;

[0011] The barrier 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 barrier 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, and 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, after the traction wire rope passes through the limiting wheel assembly, a wire rope limiting clamp is connected thereto, 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 a plurality of 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 further 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 present invention 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 1A schematic diagram of the three-dimensional structure of a monorail crane locomotive anti-runaway device provided in one embodiment of the present invention.

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

[0022] The text markings in the figure are as follows: 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 in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present invention.

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

[0025] Based on the special environment of underground monorail crane locomotives running on a single I-shaped track in coal mines, the inventor proposed an innovative safety protection solution. By cleverly setting the barrier net under the track, and using flexible energy absorbers, traction wire ropes, guide devices and retractable rope control systems, a barrier net is constructed that can be quickly closed in an emergency and does not affect the transportation of ground equipment during normal operation. The specific implementation is as follows.

[0026] like Figure 1 As shown, this embodiment provides a monorail crane anti-runaway device, including at least one 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 absorber 1 is symmetrically installed on the ground on both sides of the monorail locomotive track 12. The flexible energy absorber 1 in this embodiment adopts the prior art CN107054400B to provide a progressive buffering energy absorber. The lower shell of the flexible energy absorber 1 is buried underground, and the upper part is wound with a traction wire rope 3 to provide a flexible blocking function when the monorail locomotive runs away. In this embodiment, two flexible energy absorbers 1 are arranged on both sides of the roadway.

[0028] In some embodiments, the blocking net 7 is arranged below the track 12, and its two ends are connected to the corresponding flexible energy absorbers 1 on both sides through the traction wire ropes 3 arranged on both sides, and the blocking net 7 is used to intercept the monorail crane when it runs. The blocking net 7 mainly blocks the front end of the monorail crane in the running direction.

[0029] Each flexible energy absorber 1 leads to a traction wire rope 3, which is connected to the corresponding end of the blocking net 7 after being guided by the guide device. The traction wire rope 3 is used to control the action of the flexible energy absorber 1 when the monorail crane hits the blocking net 7. That is to say, when the monorail crane hits the pulling net, the traction wire rope 3 is guided by the guide device to pull the flexible energy absorber 1 on the ground, and the impact energy is absorbed by the flexible energy absorber 1. Thus, the monorail crane is blocked.

[0030] In some implementations, the barrier net 7 is connected to the rope-retracting device 11 through the pull rope 9, and the rope-retracting device 11 is used to control the lifting and lowering of the barrier net 7. Specifically, the barrier net 7 is kept in a normally closed state by the rope-retracting device 11. When a locomotive passes through, if there is no runaway accident, the barrier net 7 is lowered under the action of the rope-retracting device 11, and the locomotive passes through the space formed by the traction wire ropes 3 on both sides and the barrier net 7 to achieve normal passage. If a runaway accident occurs, the rope-retracting device 11 does not work, and the monorail crane locomotive hits the barrier net and is intercepted by the barrier net 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 under a mounting bracket 13, the mounting bracket 13 is installed in the space above the track, and each traction wire rope 3 is connected to the corresponding end of the barrier net 7 after being guided by the first guide wheel assembly 2 and the second guide wheel assembly 4 in turn. 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 from each flexible energy absorber 1 is connected to the corresponding end of the barrier net 7 after being guided and reversed by the first guide wheel and the second guide wheel in turn. 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 arranged in the mounting frame, and the corresponding traction wire rope 3 is led out from the space between the mounting frame and the drum, and 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 limit card 6 after passing through the limit wheel assembly 5. Optionally, the wire rope limit card 6 is configured as a sleeve structure with two half sleeves clamped on the wire rope by fasteners. The size of the wire rope limit card 6 should be larger than the opening between the mounting frame and the drum. The wire rope limit card 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 wire ropes, and two adjacent blocking steel wire ropes are connected by multiple connecting steel wire ropes to form a mesh interception surface.

[0035] In other embodiments, the blocking net 7 includes at least two blocking steel 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 blocking steel wire rope are arranged in a ring shape, and the connecting end of each traction steel wire rope 3 and the blocking steel wire rope is also arranged in a ring shape, and the ring structure of the blocking 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, a lifting lug or pulley is provided below 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 device 11 is configured as a winch, and a winch fixing frame 10 is provided above the track of the monorail crane, and the winch is fixed on the winch fixing frame 10. The winch controls the retracting and releasing of the pull rope, thereby realizing the lifting and lowering of the barrier 7. The pull rope connected to the winch is an ordinary thin steel wire rope, which can be broken when the monorail crane hits the barrier.

[0039] When this embodiment is used specifically, in normal operation, the net 7 is controlled to be lowered by the rope-retracting device 11, and the locomotive can safely pass through the pulling wire ropes 3 on both sides; once a runaway vehicle accident occurs, the rope-retracting device 11 keeps the net 7 closed, and the ground flexible energy absorber 1 is pulled by the pulling wire ropes 3 to achieve precise interception of the locomotive and gradual elimination 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 other elements not explicitly listed, or also includes elements 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 of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A monorail crane anti-runaway device, characterized in that: include: At least one pair of flexible energy absorbers, traction wire ropes, blocking nets and rope retracting and releasing devices; The flexible energy absorber is symmetrically installed 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, and the blocking net is used to intercept the monorail crane locomotive 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, and the traction wire rope is used to control the action of the flexible energy absorber when the monorail crane hits the barrier; The barrier 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 barrier 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 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.

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 is characterized in that: After the traction wire rope passes through the limiting wheel assembly, a wire rope limiting card is connected, 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 blocking net includes at least two blocking steel 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 an interception surface.

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

Images