Rope grabbing mechanism of monorail crane

Abstract

The utility model relates to a rope grabbing mechanism of a monorail crane, which comprises a rack, a lifting seat, a lifting oil cylinder, a swinging oil cylinder, a traction plate, a clamping oil cylinder and a rope clamping plate, the lifting seat is connected with the rack through the lifting oil cylinder to realize lifting, and the traction plate is hinged with the lifting seat and is driven by the swinging oil cylinder to swing at a certain angle. A locking groove is formed in the head of the traction plate, the rope clamping plate is hinged to the traction plate and is driven by the clamping oil cylinder to clamp and loosen a steel wire rope, the lifting base is further provided with a rope disengaging oil cylinder, and a rope disengaging hook is fixed to an output rod of the rope disengaging oil cylinder. Reliability during rope releasing is guaranteed, hybrid power switching of the monorail crane is guaranteed, and the transport trolley runs smoothly.

Description

Technical Field

[0001] The utility model relates to a rope grabbing mechanism of a single rail hoist, belonging to the field of coal mine transportation systems. Background Technique

[0002] A single rail hoist is an auxiliary transportation locomotive in a coal mine, running on a single rail in a roadway. It can not only transport materials, personnel and equipment, but also complete simple lifting and hoisting of underground equipment. It is a multi-functional, high-efficiency and multi-purpose underground auxiliary transportation vehicle.

[0003] The existing single rail hoists can be mainly divided into two categories in terms of power sources: The first category uses a winch as the power source. The steel wire rope is wound around the friction wheel of the winch for a certain number of turns. The single rail hoist is connected / locked to the steel wire rope, and the transportation of the single rail hoist is realized through the operation of the winch. This kind of power source winch has the advantages of no pollution, strong endurance and large traction force during operation. However, its maneuverability is poor and it cannot meet the transportation requirements of complex routes with multi-branch connecting roadways. The second category is a single rail hoist with a self-powered device, which can be further subdivided into a pneumatic single rail hoist, a battery single rail hoist, a lithium battery single rail hoist and a diesel engine single rail hoist. They all output power through their self-provided diesel engine / battery / compressed air device and generate traction force by driving wheels clamped on the web of the track to run on the track. The pneumatic single rail hoist has a simple structure, low manufacturing and operating costs, and is clean and pollution-free. However, its traction force is small and the transportation distance is short, so it is not suitable for continuous heavy load long-distance transportation. The diesel engine single rail hoist has a large traction force, is flexible and efficient, but consumes a large amount of oxygen during operation, and the exhaust gas discharged will also pollute the environment, with low energy utilization rate and high operating costs. The battery and lithium battery single rail hoists are both clean and environment-friendly single rail hoists, with high transportation efficiency, flexibility and high efficiency, which are the currently advocated forms of single rail hoists. However, their disadvantages are small traction force, small climbing angle, short endurance mileage under the conditions of heavy load and continuous slopes.

[0004] Therefore, the function of this utility model is to combine a rope-traction single rail hoist with a battery / lithium battery single rail hoist to meet the transportation requirements of complex working conditions by switching power sources: that is, it can use a steel wire rope to traction the single rail hoist and can also use a battery / lithium battery to traction the single rail hoist.

[0005] In a straight roadway, the rope-gripping mechanism grips the towing rope, and the monorail crane is driven by the towing rope to transport materials and personnel; when the rope is loose and the towing plate of the rope-gripping mechanism descends, the storage battery and lithium battery can be used to drive the monorail crane to move to transport materials and personnel. Therefore, a rope-gripping mechanism needs to be configured on the monorail crane to ensure the smooth operation of the power source switching of the monorail crane. The existing rope-gripping mechanism, such as the one with the Chinese patent publication number CN217099950U, is a clamping and loosening rope device. After use, it is found that the rope-clamping structure is okay, but when the rope is disengaged, due to the long length of the steel wire rope, its own elasticity, and possible deviation in relative position during the transportation route, it will cause the failure of rope disengagement, and the rope disengagement action may need to be repeated multiple times, which not only affects the production efficiency but also increases the risk of abnormal power source switching. Summary of the Invention

[0006] The purpose of the present utility model is to provide a rope-gripping mechanism for a monorail crane that ensures the reliability during rope disengagement, guarantees the hybrid power switching of the monorail crane, and enables the smooth operation of the transportation trolley.

[0007] To achieve the above purpose, the technical solution of the present utility model is: a rope-gripping mechanism for a monorail crane, including a frame, a lifting seat, a lifting oil cylinder, a swing oil cylinder, a towing plate, a clamping oil cylinder, and a rope-clamping plate. The lifting seat is connected to the frame through the lifting oil cylinder to achieve lifting. The towing plate is hinged to the lifting seat and is driven by the swing oil cylinder to swing at a certain angle. A locking groove is provided at the head of the towing plate. The rope-clamping plate is hinged to the towing plate and is driven by the clamping oil cylinder to clamp and release the steel wire rope. A rope-disengaging oil cylinder is further provided on the lifting seat, and a rope-disengaging hook is fixed on the output rod of the rope-disengaging oil cylinder.

[0008] Preferably, the rope-disengaging hook has a limit long hole, the lifting seat has a limit pin that cooperates with the limit long hole, and the upper part of the rope-disengaging hook has a hook groove. After the lifting of the rope-disengaging hook is limited, it ensures accurate grasping of the steel wire rope position, and the hook groove can well grasp the steel wire rope, further ensuring the rope disengagement effect.

[0009] Preferably, the frame has a slide rail, and the lifting seat is slidably connected to the slide rail. The slide rail can ensure the stability of the lifting seat during lifting.

[0010] Preferably, there are two towing plates, both of which are connected to the lifting seat and are respectively driven by corresponding swing oil cylinders to swing. Each towing plate is provided with a clamping oil cylinder and a rope-clamping plate. Since the towing ropes of the hybrid power monorail crane have two, two towing plates and rope-clamping plates need to be configured to synchronously clamp and release the towing ropes.

[0011] Preferably, the rope clamping plate is L-shaped. Two rope clamping plates are installed on each traction plate, and the middle of the rope clamping plate is hinged to the traction plate. Two connecting plates are hinged to one end of the piston rod of the clamping oil cylinder, and the other ends of the connecting plates are respectively hinged to the corresponding rope clamping plates. The rope clamping plate is a key component for clamping the traction rope. By rotating the clamping oil cylinder, one end of the rope clamping plate can be slowly moved closer to the locking groove to clamp the traction rope, improving the clamping reliability.

[0012] Preferably, there are two arc-shaped long holes on the traction plate, and the hinge shaft of the other end of the connecting plate and the rope clamping plate cooperates with the arc-shaped long holes. The arc-shaped long holes can ensure the limit during the rotation of the rope clamping plate and prevent jamming.

[0013] Preferably, a hinge seat is fixed on the lifting seat, and the traction plate is hinged to the hinge seat of the lifting seat. It is convenient for installation, forming a hinge and facilitating the swing of the traction plate.

[0014] After adopting the above structure, the utility model is installed on the transport trolley of the hybrid monorail hoist. When the transport trolley is located in a straight roadway, the traction plate cooperates with the rope clamping plate to clamp the traction rope, and the transport trolley is driven to move by the traction rope; when passing through a curve or entering a branch roadway, the traction plate swings by a certain angle, the rope clamping plate rotates by a certain angle, the rope releasing oil cylinder drives the rope releasing hook to rise and hook the steel wire rope, and then the steel wire rope is pulled down by a certain distance to ensure that the traction plate can be separated from the steel wire rope, and the transport trolley runs on the main track by the battery drive mode. Therefore, when the utility model is used in combination with the hybrid monorail hoist, the traction plate can be easily separated from the steel wire rope, ensuring the smooth switching of the power operation of the hybrid monorail hoist. Description of the Drawings

[0015] Figure 1 is a schematic diagram of the utility model;

[0016] Figure 2 is Figure 1 the A-A cross-sectional view of;

[0017] Figure 3 is a schematic diagram of the rope-grabbing state of the utility model;

[0018] Figure 4 is a schematic diagram of the rope-releasing hook grabbing the steel wire rope to assist in rope release;

[0019] Figure 5 is Figure 1 the schematic diagram of the middle frame in;

[0020] Figure 6 is a schematic diagram of the open state of the traction plate;

[0021] Figure 7 is an installation schematic diagram of the utility model. Detailed Description of the Invention

[0022] The following embodiments given in conjunction with the accompanying drawings further illustrate the present utility model in detail.

[0023] Refer to Figure 1 、 2 As shown, a rope-gripping mechanism of a single-track crane includes a frame 1, a lifting seat 2, a lifting oil cylinder 3, a swing oil cylinder 4, a traction plate 5, a clamping oil cylinder 6, and a rope-clamping plate 7. Refer to Figure 5 As shown, the lower part of the frame 1 is a horizontal plate body for installing the cylinder body of the lifting oil cylinder, and four vertical plate bodies. The two inner vertical plate bodies are used to install two slide rails 11 respectively, and the two outer vertical plate bodies are used to install the frame 1 on the traction main beam 100. The lifting seat 2 is a flat plate, and the lifting oil cylinder 3 is the power source for driving the lifting seat 2 to move up and down on the slide rails 11, and at the same time drives the two traction plates 5 to move up and down. The traction plate 5 is driven by the swing oil cylinder 4 to swing at a certain angle. One end of the swing oil cylinder 4 is hinged to the lifting seat 2, and the other end of the piston rod is hinged to the respective traction plate 5. Refer to Figure 2 As shown, the traction plate 5 is in a vertical state for clamping the steel wire rope. And refer to Figure 6 As shown, when the lifting seat 2 rises, the traction plate 5 is in an open state to release the steel wire rope. The head of the traction plate 5 is provided with a hook shape and has a locking groove 51. It can easily grasp the steel wire rope to ensure the reliability of subsequent rope pressing.

[0024] Refer to Figure 2 As shown, the rope-clamping plate 7 is L-shaped. Two rope-clamping plates 7 are relatively hinged on each traction plate 5, and the middle of the rope-clamping plate 7 is hinged to the traction plate 5. One end of the piston rod of the clamping oil cylinder 6 is hinged with two connecting plates 8. One end of the two connecting plates 8 is hinged to the clamping oil cylinder 6, and there are two arc-shaped long holes 52 on the traction plate 5. The other end of the connecting plate 8 and the hinge shaft of the rope-clamping plate 7 cooperate with the arc-shaped long holes 52. The rope-clamping plate 7 rotates and connects by relying on the lifting of the clamping oil cylinder 6. Designing it into an L shape can ensure sufficient rope pressing force, and the rotation distance of the rope-clamping plate 7 can also be reduced. Using one clamping oil cylinder 6 as the drive can make the rotation positions and rope pressing forces of the two rope-clamping plates 7 consistent.

[0025] Refer to Figure 1 、 3 As shown in 、 and 4, a rope-removing oil cylinder 9 is also provided on the lifting seat 2. One end of the rope-removing oil cylinder 9 is connected to the lifting seat 2, and a rope-removing hook 91 is fixed on the output rod of the rope-removing oil cylinder 9. The assembly composed of the rope-removing oil cylinder 9 and the rope-removing hook 91 is a mechanism for assisting the traction plate 5 to smoothly remove the rope. The rope-removing hook 91 has a limit long hole 92, and the lifting seat 2 has a limit pin 22 that cooperates with the limit long hole 92 to ensure the lifting position of the rope-removing hook 91, and the upper part of the rope-removing hook 91 has a hook groove. The hook groove can hook the steel wire rope.

[0026] Refer to Figure 7As shown in the figure, the utility model is fixed on the traction main beam 100 through the frame 1, and the traction main beam 100 is movably connected to the track at the upper part of the mine through a pulley block. One end of the traction main beam 100 can be connected to the transport trolley to drive the transport trolley to move on the track.

[0027] See Figure 1 , 2 As shown in the figure, the present application can refer to the coal mine transportation system of CN106335514A. The rope clamping and releasing device is installed on the transport trolley. The principle of rope grasping and releasing is as follows: when the transport trolley is running in a straight roadway, the utility model needs to clamp the traction rope. The swing oil cylinder 4 swings the traction plate 5 to a vertical state, and the lifting oil cylinder 3 drives the lifting seat 2 to descend. The locking groove 51 of the traction plate 5 hooks the traction rope, and the traction rope is located in the locking groove 51. The clamping oil cylinder 6 drives the two rope clamping plates 7 to rotate relative to each other by a certain angle, so that the upper part of the rope clamping plate 7 tightly abuts against the traction rope to lock the traction rope and realize the rope grasping operation. Therefore, the entire transport trolley can move synchronously with the traction rope, and the winch powered by the traction rope drives the traction rope to pull the transport trolley to move. When the transport trolley reaches the turning section of the main track or needs to enter the branch roadway, since there is no traction rope arranged in the branch roadway and the traction force of the turning section of the main track becomes larger, power switching is required. The transport trolley needs to be separated from the power traction of the traction rope. At this time, the clamping oil cylinder 6 drives the two rope clamping plates 7 to rotate in the opposite direction, away from the locking groove 51, and the rope releasing oil cylinder 9 is started to drive the rope releasing hook 91 to hook the steel wire rope and pull the steel wire rope downward. After descending to a certain position, the lifting oil cylinder 3 drives the lifting seat 2 to rise, so that the locking groove 51 is disengaged from the traction rope, and then the swing oil cylinder 4 rotates the traction plate 5 outward by a certain angle to disengage the traction rope. At this time, the transport trolley can use the battery drive mechanism as the power source to run by itself. Due to the presence of the rope releasing oil cylinder 9 and the rope releasing hook 91 for auxiliary rope releasing, the reliability during rope releasing is ensured, the hybrid power switching of the single rail hoist is ensured, and the transport trolley runs smoothly.

[0028] The above are only the preferred embodiments of the utility model. It should be noted that for those of ordinary skill in the art, without departing from the inventive concept of the utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the utility model.

Claims

1. A rope-grabbing mechanism for a single-track hoist, comprising a frame (1), a lifting seat (2), a lifting oil cylinder (3), a swing oil cylinder (4), a traction plate (5), a clamping oil cylinder (6) and a rope-clamping plate (7). The lifting seat (2) is connected to the frame (1) through the lifting oil cylinder (3) to achieve lifting. The traction plate (5) is hinged to the lifting seat (2) and is driven by the swing oil cylinder (4) to swing at a certain angle. The traction plate (5) is provided with a locking groove (51). The rope-clamping plate (7) is hinged to the traction plate (5) and is driven by the clamping oil cylinder (6) to clamp and release the steel wire rope. It is characterized in that: The lifting seat (2) is also provided with a rope release oil cylinder (9), and a rope release hook (91) is fixed on the output rod of the rope release oil cylinder (9).

2. The rope-grabbing mechanism of the single-rail crane according to claim 1, characterized in that: The rope release hook (91) is provided with a limit long hole (92), the lifting seat (2) is provided with a limit pin (22) matched with the limit long hole (92), and the upper part of the rope release hook (91) is provided with a hook groove.

3. The rope-grabbing mechanism of the single-rail crane according to claim 1, characterized in that: The frame (1) is provided with a slide rail (11), and the lifting seat (2) is slidably connected with the slide rail (11).

4. The rope-grabbing mechanism of the single-rail crane according to claim 1, characterized in that: There are two traction plates (5), both of which are connected to the lifting seat (2) and are respectively driven to swing by corresponding swing oil cylinders (4). Each traction plate (5) is provided with a clamping oil cylinder (6) and a rope clamping plate (7).

5. The rope-grabbing mechanism of the single-rail crane according to claim 1, characterized in that: The rope clamping plate (7) is L-shaped. Each traction plate (5) is provided with two rope clamping plates (7), and the middle part of the rope clamping plate (7) is hinged to the traction plate (5). One end of the piston rod of the clamping oil cylinder (6) is hinged with two connecting plates (8), and the other ends of the connecting plates (8) are respectively hinged to the corresponding rope clamping plates (7).

6. The rope-grabbing mechanism of the single-track crane according to claim 1, characterized in that: The traction plate (5) is provided with two arc-shaped long holes (52), and the hinge shaft of the other end of the connecting plate (8) and the rope clamping plate (7) is matched with the arc-shaped long holes (52).

7. The rope-grabbing mechanism of the single-track crane according to claim 1, characterized in that: A hinge seat (21) is fixed on the lifting seat (2), and the traction plate (5) is hinged to the hinge seat (21) of the lifting seat (2).

Images