An emergency lifting device for an in-vehicle polishing trolley

Abstract

The utility model provides a kind of in-vehicle polishing trolley emergency hoisting and lowering device, comprising: hoisting and lowering hook;Hand-operated tackle, the hand-operated tackle is set in the bottom of the hoisting and lowering hook;Hook, the hook is hung in the bottom of the hand-operated tackle;Steel rope, the steel rope is fixedly installed in the bottom of the hook.The utility model provides a kind of in-vehicle polishing trolley emergency hoisting and lowering device, through hoisting and lowering hook, hand-operated tackle, hook, steel rope and multiple fixed pulley etc. Structure is mutually cooperated, when polishing trolley emergency hoisting and lowering, hoisting and lowering hook is fixed in vehicle in advance, without temporary installation hanging point;Fixed pulley changes the direction of steel rope, so that rescue personnel can operate hand-operated tackle in vehicle, without drilling to narrow space under vehicle;Hand-operated tackle power-saving transmission, polishing trolley is smoothly lifted by steel rope, without high strength physical labor, to solve the problem that traditional hoisting and lowering is limited by space, operation intensity is big, reduce safety risk.

Description

Technical Field

[0001] This utility model relates to the field of rail transit maintenance equipment technology, and in particular to an emergency recovery device for an in-vehicle grinding trolley. Background Technology

[0002] The in-car grinding trolley is the core actuator for rail grinding operations. It descends to the rail surface to remove rail defects such as wavy wear, thick edges, and spalling, ensuring train safety and extending the rail's lifespan. It is widely used in the maintenance of national railways, subways, and other rail transit lines. During grinding operations, the grinding trolley relies on a lifting cylinder for raising, lowering, and suspending. However, if a sudden malfunction occurs, such as a bent or stuck piston rod, damaged oil pipes, or a loss of pressure in the hydraulic pump, the grinding trolley may be unable to rise to the suspended position, causing the train to stop and requiring emergency restart and rescue.

[0003] Currently, the traditional emergency recovery method for grinding trolleys in the industry has many prominent problems: First, the working environment is limited. The grinding trolley is installed under the train, in a confined space, and the space is even more compact in tunnels, platforms, and other scenarios, making it difficult for rescuers to enter the operating position or even carry out rescue operations. Second, the work is arduous and inefficient. The traditional method requires personnel to crawl under the train, kneel on the rail surface or squat to repeatedly operate the hand-operated hoist, which is extremely physically demanding. In addition, the hand-operated hoist is heavy and the installation process is cumbersome, which seriously wastes rescue time. Third, the safety risks are high. If the grinding trolley suspension falls off or shifts when operating under the train, it can easily cause injury or death to rescuers.

[0004] Therefore, it is necessary to provide an emergency recovery device for an in-vehicle grinding cart to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides an emergency recovery device for an in-vehicle grinding trolley, which solves the problems of traditional emergency recovery methods being limited by space, having high work intensity, high safety risks, and low rescue efficiency.

[0006] To solve the above-mentioned technical problems, this utility model provides an emergency recovery device for an in-vehicle grinding cart, comprising: Re-clutch; A hand-cranked hoist, wherein the hand-cranked hoist is disposed at the bottom of the lifting hook; A hook, which is suspended from the bottom of the hand-cranked hoist; A steel rope, which is fixedly installed at the bottom of the hook; Multiple fixed pulleys are provided on the outer side of the steel rope.

[0007] Preferably, a grinding carriage is fixedly installed at the bottom of the steel rope.

[0008] Preferably, the in-vehicle grinding trolley emergency recovery device further includes a limiting component, two connecting components, and multiple anti-slip teeth. The limiting component is disposed on the outer side of the steel rope, the two connecting components are disposed inside the limiting component, and the multiple anti-slip teeth are disposed on the outer side of the steel rope.

[0009] Preferably, the limiting component includes a first limiting seat and a second limiting seat, both of which are disposed on the outer side of the steel rope.

[0010] Preferably, both connecting components include a threaded rod, a nut, and a through hole. The threaded rod is fixedly installed on one side of the first limiting seat, the through hole is opened inside the second limiting seat, and the nut is threadedly connected to the outer side of the threaded rod.

[0011] Preferably, one end of the threaded rod passes through one side of the through hole and extends to the other side, and the nut is disposed on the other side of the through hole.

[0012] Preferably, the plurality of anti-slip teeth are respectively fixedly installed on the inner sides of the first limiting seat and the second limiting seat.

[0013] Compared with related technologies, the emergency recovery device for an in-vehicle grinding cart provided by this utility model has the following beneficial effects: This utility model provides an emergency repositioning device for a grinding trolley inside a vehicle. The device utilizes a repositioning hook, a hand-cranked hoist, a hook, a steel cable, and multiple fixed pulleys working together. During emergency repositioning of the grinding trolley, the repositioning hook is pre-fixed inside the vehicle, eliminating the need for temporary attachment points. The fixed pulleys change the direction of the steel cable, allowing rescue personnel to operate the hand-cranked hoist from inside the vehicle without having to crawl into the confined space beneath it. The hand-cranked hoist provides labor-saving transmission, smoothly lifting the grinding trolley via the steel cable without requiring strenuous physical labor. This solves the problems of space constraints and high operational intensity associated with traditional repositioning methods, reducing safety risks. Attached Figure Description

[0014] Figure 1 A schematic diagram of the structure of a first embodiment of an emergency recovery device for an in-vehicle grinding cart provided by this utility model; Figure 2 A schematic diagram of the second embodiment of an emergency recovery device for an in-vehicle grinding cart provided by this utility model; Figure 3 for Figure 2 The diagram shows the exploded structure.

[0015] The following are the labels in the diagram: 1. Re-clutch hook, 2. Hand-cranked hoist, 3. Hook, 4. Steel rope, 5. Fixed pulley, 6. Grinding carriage, 7. Limiting assembly, 71. First limit seat, 72. Second limit seat, 8. Connecting assembly, 81. Threaded rod, 82. Nut, 83. Through hole, 9. Anti-slip teeth. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] First Embodiment

[0018] Please refer to the following: Figure 1 ,in, Figure 1 This is a schematic diagram of the first embodiment of an emergency recovery device for an in-vehicle grinding cart provided by this utility model.

[0019] An emergency recovery device for an in-vehicle grinding cart includes: a recovery hook 1; A hand-cranked hoist 2 is disposed at the bottom of the lifting hook 1; Hook 3, which is suspended from the bottom of the hand-cranked hoist 2; Steel rope 4, which is fixedly installed at the bottom of hook 3; Multiple fixed pulleys 5 are provided on the outer side of the steel rope 4.

[0020] A grinding carriage 6 is fixedly installed at the bottom of the steel rope 4.

[0021] The lifting hook 1 is pre-welded to a dedicated hanging point on the crossbeam inside the vehicle, eliminating the need for temporary installation and saving rescue time. The hand-cranked hoist 2 is lightweight, making it easy to store and retrieve inside the vehicle. The fixed pulleys 5 are welded to a pre-set position on the vehicle body via a bracket. Two of the fixed pulleys 5 are adapted to the dust collection box obstruction situation, changing the direction of the steel cable 4 so that the steel cable 4 can pass through the opening in the vehicle floor and extend to the grinding carriage 6, enabling operation inside the vehicle. The steel cable 4 is made of high-strength steel wire rope, with one end connected to the dedicated hanging seat of the grinding carriage 6, and the other end connected to the hook 3 of the hand-cranked hoist 2 via the fixed pulley 5, ensuring load-bearing stability during the lifting and retraction process.

[0022] The working principle of the emergency recovery device for an in-vehicle grinding cart provided by this utility model is as follows: When the grinding trolley 6 cannot be suspended due to a malfunction of the lifting cylinder, the rescue personnel enter the machine room from the driver's cab without getting out of the vehicle; suspend the hand-cranked hoist 2 on the lifting hook 1, and guide the steel cable 4 through the fixed pulley 5 to the special hanging seat of the grinding trolley 6 and fix it.

[0023] Rescuers operated the crank of the hand-cranked hoist 2 upright inside the vehicle. Through the cooperation of the steel cable 4 and the fixed pulley 5, the grinding carriage 6 was slowly lifted. The fixed pulley 5 changed the direction of force, so that the pulling force of the operation inside the vehicle was consistent with the lifting force of the grinding carriage, eliminating the need for extra force and greatly reducing physical exertion. After the grinding carriage 6 was lifted to the preset suspension position, the emergency recovery was completed, and the train could travel normally to the maintenance location.

[0024] Compared with related technologies, the emergency recovery device for an in-vehicle grinding cart provided by this utility model has the following beneficial effects: The hoisting hook 1, hand-cranked hoist 2, hook 3, steel rope 4, and multiple fixed pulleys 5 work together to achieve the following structure: when the grinding trolley 6 is urgently hoisted, the hoisting hook 1 is pre-fixed inside the vehicle, eliminating the need for temporary attachment points; the fixed pulleys 5 change the direction of the steel rope 4, allowing rescuers to operate the hand-cranked hoist 2 from inside the vehicle without having to crawl into the confined space under the vehicle; the hand-cranked hoist 2 provides labor-saving transmission, smoothly lifting the grinding trolley 6 via the steel rope 4 without requiring strenuous physical labor, thus solving the problems of space limitations and high work intensity associated with traditional hoisting methods and reducing safety risks.

[0025] Second Embodiment

[0026] Please refer to the following: Figure 2 and Figure 3 Based on the first embodiment of this application providing an emergency recovery device for an in-vehicle grinding cart, the second embodiment of this application proposes another emergency recovery device for an in-vehicle grinding cart. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0027] Specifically, the difference in the emergency recovery device for an in-vehicle grinding cart provided in the second embodiment of this application is that the emergency recovery device for an in-vehicle grinding cart further includes a limiting component 7, two connecting components 8 and a plurality of anti-slip teeth 9. The limiting component 7 is disposed on the outer side of the steel rope 4, the two connecting components 8 are disposed inside the limiting component 7, and the plurality of anti-slip teeth 9 are disposed on the outer side of the steel rope 4.

[0028] The limiting component 7 includes a first limiting seat 71 and a second limiting seat 72, both of which are disposed on the outer side of the steel rope 4.

[0029] Both of the connecting components 8 include a threaded rod 81, a nut 82, and a through hole 83. The threaded rod 81 is fixedly installed on one side of the first limiting seat 71, the through hole 83 is opened inside the second limiting seat 72, and the nut 82 is threadedly connected to the outer side of the threaded rod 81.

[0030] One end of the threaded rod 81 passes through one side of the through hole 83 and extends to the other side, and the nut 82 is disposed on the other side of the through hole 83.

[0031] Multiple anti-slip teeth 9 are respectively fixedly installed on the inner sides of the first limiting seat 71 and the second limiting seat 72.

[0032] The working principle of the emergency recovery device for an in-vehicle grinding cart provided by this utility model is as follows: The limiting component 7 is installed on the steel rope 4 near the opening in the vehicle floor. The anti-slip teeth 9 are made of rubber to increase the friction with the steel rope 4. When the nut 82 is tightened, the first limiting seat 71 and the second limiting seat 72 move closer to each other, and the anti-slip teeth 9 clamp the steel rope 4 to temporarily fix the steel rope 4, thereby preventing the steel rope 4 from sliding from the small hole in the vehicle to the bottom of the vehicle when it is not in use.

[0033] Compared with related technologies, the emergency recovery device for an in-vehicle grinding cart provided by this utility model has the following beneficial effects: Through the cooperation of the limiting component 7, two connecting components 8 and multiple anti-slip teeth 9, when the steel rope is fixed, tightening the nut 82 will clamp the steel rope 4 between the first limiting seat 71 and the second limiting seat 72. The anti-slip teeth 9 enhance the friction, and no additional fixing device is required. When not in use, the steel rope 4 can be temporarily locked to prevent it from slipping out of the vehicle and no manual pulling is required. At the same time, the retraction structure can still achieve convenient retraction from inside the vehicle, thereby further improving the safety and convenience of use, preventing the steel rope 4 from shifting and affecting the rescue, and ensuring that the emergency retraction process is stable and controllable.

[0034] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An emergency recovery device for an in-vehicle grinding cart, characterized in that, include: Re-clutch; A hand-cranked hoist, wherein the hand-cranked hoist is disposed at the bottom of the lifting hook; A hook, which is suspended from the bottom of the hand-cranked hoist; A steel rope, which is fixedly installed at the bottom of the hook; Multiple fixed pulleys are provided on the outer side of the steel rope.

2. The emergency recovery device for an in-vehicle grinding cart according to claim 1, characterized in that, A grinding carriage is fixedly installed at the bottom of the steel rope.

3. The emergency recovery device for an in-vehicle grinding cart according to claim 1, characterized in that, It also includes a limiting component, two connecting components, and multiple anti-slip teeth. The limiting component is disposed on the outer side of the steel rope, the two connecting components are disposed inside the limiting component, and the multiple anti-slip teeth are disposed on the outer side of the steel rope.

4. The emergency recovery device for an in-vehicle grinding cart according to claim 3, characterized in that, The limiting component includes a first limiting seat and a second limiting seat, both of which are disposed on the outer side of the steel rope.

5. The emergency recovery device for an in-vehicle grinding cart according to claim 4, characterized in that, Both of the connecting components include a threaded rod, a nut, and a through hole. The threaded rod is fixedly installed on one side of the first limiting seat, the through hole is opened inside the second limiting seat, and the nut is threadedly connected to the outer side of the threaded rod.

6. The emergency recovery device for an in-vehicle grinding cart according to claim 5, characterized in that, One end of the threaded rod passes through one side of the through hole and extends to the other side, and the nut is located on the other side of the through hole.

7. The emergency recovery device for an in-vehicle grinding cart according to claim 6, characterized in that, The anti-slip teeth are respectively fixedly installed on the inner sides of the first limiting seat and the second limiting seat.

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