Lifting winch with self-locking function

Abstract

The utility model relates to the technical field of hoisting winches, and discloses a hoisting winch with a self-locking function, which comprises a device main body, a cleaning mechanism is arranged close to the upper end of one side of the device main body, the cleaning mechanism comprises a hairbrush, a sliding plate, two springs and two fixing columns, a clamping mechanism is arranged on one side of the device main body, and the clamping mechanism is arranged on the other side of the device main body. The clamping mechanism comprises a plurality of clamping blocks, a fixing seat, a plurality of pressure springs and a plurality of clamping grooves, a rotating shell is rotationally arranged on one side of the fixing seat, a mounting seat is rotationally arranged on one side of the rotating shell, and a self-locking mechanism is arranged in the device body. The self-locking mechanism comprises a rotating shaft, two screw rods, two ratchet wheels, two pawls, two fixing blocks, two rotating shafts and a motor. According to the winch self-locking device, self-locking of the winch is achieved through a ratchet wheel and a pawl in the self-locking mechanism, the cleaning mechanism can clean a steel cable outside the winch, and the clamping mechanism in the device body can clamp a rotating shaft in an emergency.

Description

Technical Field

[0001] This utility model relates to the field of hoisting winch technology, and in particular to a hoisting winch with a self-locking function. Background Technology

[0002] In small-scale mine operations, hoisting winches play an extremely important role. They improve the efficiency of the production process by efficiently lifting and lowering materials such as ore and waste rock. In the mine's hoisting system, hoisting winches not only ensure the safe transfer of personnel and materials, but also become indispensable equipment in various situations such as vertical shafts or inclined shafts. As a light and small lifting device, hoisting winches mainly complete the lifting or traction of heavy objects by winding steel wire ropes or chains on their drums. Their application is very flexible. They can be used alone or integrated into large mechanical equipment such as cranes, road construction machinery, and mine hoisting systems as a key component.

[0003] Many hoisting winches on the market lack an automatic locking function, resulting in poor braking performance. When the braking system is activated, the drum response is often slow, and the winch drum often vibrates during the braking process, which may cause the cargo in the hoisted mine car to scatter, increasing safety hazards in the working environment.

[0004] Therefore, this utility model provides a hoisting winch with a self-locking function to solve the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a hoisting winch with a self-locking function. The internal self-locking mechanism uses ratchet and pawl to automatically lock the hoisting winch. At the same time, the cleaning mechanism is responsible for maintenance, keeping the equipment clean and in good working order by cleaning the steel cables outside the winch. In an emergency, the locking mechanism embedded in the main body of the device can quickly lock the rotating shaft to ensure the safety of the equipment.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A hoisting winch with a self-locking function includes a device body. A cleaning mechanism is provided on the upper side of one side of the device body. The cleaning mechanism includes a brush, a sliding plate, two springs and two fixed columns. A locking mechanism is provided on one side of the device body. The locking mechanism includes multiple locking blocks, a fixed seat, multiple compression springs and multiple locking grooves. A rotating outer shell is rotatably provided on one side of the fixed seat.

[0008] A mounting base is rotatably mounted on one side of the rotating outer shell, and a self-locking mechanism is provided inside the main body of the device. The self-locking mechanism includes a rotating shaft, two screws, two ratchet wheels, two pawls, two fixing blocks, two rotating shafts, and a motor.

[0009] Through the above technical solution, the cleaning mechanism is located on the upper side of the main body of the device and consists of a brush, a sliding plate, two springs, and two fixed columns. It is used to clean and maintain the steel cable. The locking mechanism is located on the side of the main body of the device and consists of multiple locking blocks, fixed seats, multiple compression springs, and multiple locking slots. It can prevent the rotating shaft from rotating in an emergency. The motor drives the rotating shaft and transmits power to the ratchet through the fixed blocks and screws. The ratchet and pawl cooperate to realize the unidirectional rotation of the rotating shaft, that is, it can automatically lock under load to prevent reverse rotation.

[0010] Furthermore, the motor is externally fixed inside the main body of the device, one side of one of the two rotating shafts is fixedly fixed to the output end of the motor, and the other side of the two rotating shafts away from the motor is rotatably mounted inside one side of the mounting base. The lower ends of the two fixing blocks are respectively fixedly mounted in the shafts of the two rotating shafts, and the opposite sides of the two screws are respectively fixedly mounted outside the opposite sides of the two rotating shafts.

[0011] With the above technical solution, when in use, the motor starts and drives the rotating shaft to rotate, which in turn drives the screw connected to it to rotate. Through the threaded connection with the screw, the ratchet can translate along the screw axis. As the ratchet moves, it engages with the fixed pawl, causing the pawl to rotate, so that the hoisting winch can perform its normal lifting and lowering function.

[0012] Furthermore, the rotating shaft is externally slidably disposed inside the rotating housing, the two ratchet wheels are respectively fixedly disposed on opposite sides of the rotating shaft, the two ratchet wheels are respectively threadedly connected to the outside of the two screws, the upper ends of the two pawls are respectively fixedly disposed inside the mounting base and the upper end of the device body, and the lower ends of the two ratchet wheels are respectively meshed with the lower ends of the two pawls.

[0013] With the above technical solution, when the motor stops running and the external power source is cut off, the winch's self-locking mechanism takes effect immediately. With the strong engagement between the ratchet and the pawl, the winch can automatically lock its position to ensure that the load will not slip, thus effectively achieving self-locking protection.

[0014] Furthermore, the rotating shaft is externally rotatably sleeved inside the fixed base, and the plurality of slots are externally formed inside the fixed base;

[0015] With the above technical solution, the rotating shaft rotates inside the fixed seat. When it malfunctions, the locking block inside the rotating shaft will lock into the slot, improving safety.

[0016] Furthermore, the external parts of the multiple locking blocks are slidably disposed inside the rotating shaft, the multiple compression springs are respectively fixedly disposed on opposite sides of the multiple locking blocks on opposite sides, the multiple compression springs are fixedly disposed inside the rotating shaft on opposite sides, and one side of the fixing seat is fixedly disposed on one side of the device body;

[0017] With the above technical solution, when the motor fails or the rotating shaft rotates rapidly, the rotating shaft will throw out the internal locking block, causing it to lock into the locking groove inside the fixed seat, thereby achieving a locking operation of the rotating shaft and enhancing safety.

[0018] Furthermore, the two fixed posts are respectively fixedly installed at both ends inside the mounting base and the device body, the upper ends of the two springs are respectively fixedly installed at the upper end inside the mounting base and the device body, the lower ends of the two springs are both fixedly installed at the upper end of the sliding plate, the lower end of the sliding plate is fixedly installed at the upper end of the brush, and the two ends of the sliding plate are respectively slidably installed outside the two fixed posts.

[0019] With the above technical solution, when the rotating shell rotates to retract the steel cable, the steel cable will slowly wrap around the outside of the rotating shell. At this time, the wrapped steel cable will be cleaned by the brush at the lower end of the sliding plate, cleaning the dust on the surface of the steel cable. As more and more steel cable is wrapped around the outside of the rotating shell, the sliding plate will slide outside the fixed column and squeeze the spring connected to it, thereby realizing adaptive adjustment of the steel cable surface, reducing the contamination of the steel cable surface and improving safety.

[0020] Furthermore, both the mounting base and the lower end of the device body are fixedly provided with a base, and both ratchet wheels are semi-circular;

[0021] Through the above technical solution, the base provides stable support, ensuring that the winch will not shake or tilt during operation, and the semi-circular shape facilitates the self-locking operation of the winch.

[0022] This utility model has the following beneficial effects:

[0023] 1. This utility model proposes a hoisting winch with a self-locking function. The rotating shaft is driven by a motor to rotate, which in turn drives the screw to rotate. The screw is threadedly connected to a ratchet. When the motor is running, the rotation of the screw causes the ratchet to move along the direction of the screw, so that the ratchet engages with the pawl, realizing the normal hoisting operation of the winch. When the motor stops and the external power is interrupted, the mechanical engagement of the ratchet and pawl and the design of the locking mechanism can automatically lock the winch to prevent the load from slipping, realize the self-locking function, and thus improve the safety of mining.

[0024] 2. This utility model proposes a hoisting winch with a self-locking function. As the winch operates, the cleaning mechanism uses a brush to automatically remove impurities from the surface of the winch and the steel cable, ensuring smooth operation of the equipment. In an emergency, such as motor failure or brake system malfunction, the locking mechanism will respond immediately. The locking block inside the rotating shaft will be thrown out by the rotation of the rotating shaft and will insert into the slot of the fixed seat, thereby locking the rotating shaft. This allows the hoisting winch to stop operating immediately in the event of an emergency, effectively preventing equipment damage and ensuring the safety of the operators. Attached Figure Description

[0025] Figure 1 This is an isometric schematic diagram of the present invention;

[0026] Figure 2 This is a cross-sectional view of the present invention;

[0027] Figure 3 This is a side sectional view of the present invention;

[0028] Figure 4 This is a side sectional view of the present invention near the locking mechanism.

[0029] Legend:

[0030] 1. Mounting base; 2. Base; 3. Cleaning mechanism; 4. Rotating housing; 5. Locking mechanism; 6. Main body of the device; 7. Self-locking mechanism; 301. Brush; 302. Sliding plate; 303. Spring; 304. Fixing column; 501. Locking block; 502. Fixing base; 503. Compression spring; 504. Locking groove; 701. Rotating shaft; 702. Screw; 703. Ratchet; 704. Pad; 705. Fixing block; 706. Rotating shaft; 707. Motor. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 1-4 One embodiment provided by this utility model:

[0033] A hoisting winch with a self-locking function includes a device body 6. A cleaning mechanism 3 is provided on the upper side of one side of the device body 6. The cleaning mechanism 3 includes a brush 301, a sliding plate 302, two springs 303 and two fixed columns 304. The two fixed columns 304 are respectively fixed at both ends of the mounting base 1 and the device body 6. The upper ends of the two springs 303 are respectively fixed at the upper end of the mounting base 1 and the device body 6. The lower ends of the two springs 303 are both fixed at the upper end of the sliding plate 302. The lower end of the sliding plate 302 is fixed at the upper end of the brush 301. The two ends of the sliding plate 302 are respectively slidably disposed outside the two fixed columns 304.

[0034] When the rotating housing 4 rotates to retract the steel cable, the cable gradually and orderly winds around the outside of the housing. During this process, the wound cable is cleaned by the cleaning mechanism 3, especially by the brush 301 installed at the lower end of the sliding plate 302. The brush 301 effectively removes dust and impurities from the surface of the cable, ensuring its cleanliness. As more and more cable winds around the outside of the rotating housing 4, the accumulated weight and tension of the cable push the sliding plate 302 to slide on the fixed post 304, thereby exerting a certain amount of pressure on the connected spring 303. This not only ensures that the sliding plate 302 and the brush 301 can continuously contact the cable for effective cleaning, but also allows for self-adjustment of the cleaning force on the cable surface through the elasticity adjustment of the spring 303. Adaptive adjustments not only reduce the wear and tear on the steel cable and extend its service life, but also reduce the increase in sliding resistance caused by surface contamination of the steel cable, thereby improving the operating efficiency and safety of the winch. When the rotating housing 4 rotates to lower the steel cable, the cable will also pass through the brush 301. Due to the elastic force of the spring 303, the brush 301 always maintains contact with the steel cable, cleaning the dust and impurities newly adhering to the surface of the steel cable during the lowering process. As the steel cable is lowered, the sliding plate 302 slides on the fixed column 304, and the spring 303 is stretched or compressed to adapt to the movement of the steel cable and ensure the cleaning effect. The material and hardness of the brush 301 can be selected according to the requirements, which can ensure the cleaning effect without damaging the steel cable and facilitate its replacement later.

[0035] A locking mechanism 5 is provided on one side of the main body 6 of the device. The locking mechanism 5 includes multiple locking blocks 501, a fixed base 502, multiple compression springs 503 and multiple slots 504. A rotating housing 4 is rotatably provided on one side of the fixed base 502. The rotating shaft 701 is rotatably sleeved inside the fixed base 502. Multiple slots 504 are opened on the outside of the fixed base 502. Multiple locking blocks 501 are slidably provided on the outside of the rotating shaft 701. Multiple compression springs 503 are fixedly provided on opposite sides of multiple locking blocks 501. Multiple compression springs 503 are fixedly provided on opposite sides of the rotating shaft 701. One side of the fixed base 502 is fixedly provided on one side of the main body 6 of the device.

[0036] In emergency situations, such as motor 707 failure or braking system malfunction, the locking mechanism 5 will be quickly triggered. At this time, the locking block 501 inside the rotating shaft 701 is thrown out and forcefully pushed by the compression spring 503. Simultaneously, it engages tightly with the locking groove 504 inside the fixed seat 502, effectively locking the rotating shaft 701. This ensures the hoisting winch can stop stably in unexpected situations, guaranteeing the safety of the equipment and users. It plays a crucial safety role in the emergency braking system. A speed sensor can be installed inside the rotating shaft 701 to detect when the motor 707 fails. When the machine 707 fails, the speed sensor detects that the rotation speed of the rotating shaft 701 exceeds a certain threshold of the normal operating speed and determines that it is rotating abnormally fast. At this time, the centrifugal force generated by the rapid rotation of the rotating shaft 701 overcomes the elastic force of the compression spring 503, causing multiple locking blocks 501 to overcome the resistance of the compression spring 503 and slide outward along the sliding groove inside the rotating shaft 701, accurately locking into the corresponding locking slot 504 inside the fixed seat 502, thereby achieving rapid locking of the rotating shaft 701. The speed sensor is a mature and publicly available technology in the prior art, therefore, its specific structure and working principle will not be described in detail in this article.

[0037] A mounting base 1 is rotatably mounted on one side of the rotating outer casing 4. A self-locking mechanism 7 is installed inside the main body 6. The self-locking mechanism 7 includes a rotating shaft 701, two screws 702, two ratchet wheels 703, two pawls 704, two fixing blocks 705, two rotating shafts 706, and a motor 707. The motor 707 is externally fixed inside the main body 6. One side of one of the two rotating shafts 706 is fixedly mounted on the output end of the motor 707, and the other side of the two rotating shafts 706, away from the motor 707, is rotatably mounted inside the mounting base 1. The lower ends of the two fixing blocks 705 are respectively fixed to the two rotating shafts 701. In the 6-axis configuration, two screws 702 are fixedly mounted on opposite sides of the two rotating shafts 706 on opposite sides. The rotating shaft 701 is slidably mounted inside the rotating housing 4. Two ratchet wheels 703 are fixedly mounted on opposite sides of the rotating shaft 701. The ratchet wheels 703 are threadedly connected to the outside of the two screws 702. The upper ends of the two pawls 704 are fixedly mounted on the upper ends of the mounting base 1 and the device body 6. The lower ends of the two ratchet wheels 703 are meshed with the lower ends of the two pawls 704. The mounting base 1 and the lower end of the device body 6 are both fixedly mounted with a base 2. Both ratchet wheels 703 are semi-circular.

[0038] During operation, the motor 707 inside the main body 6 of the starting device drives the rotating shaft 706 to rotate, which in turn drives the connected screw 702 to rotate. The rotation of the screw 702 connects the thread to the ratchet 703, causing the ratchet 703 to smoothly advance along the axis of the screw 702. During this process, the ratchet 703 and the pawl 704 mesh with each other, enabling the winch to perform normal lifting and lowering operations. Once the power of the motor 707 stops working, the self-locking mechanism will automatically activate, causing the ratchet 703 and the pawl 704 to mesh tightly. The torsion spring on 4 ensures that the pawl 704 and ratchet 703 remain engaged at all times. Even if vibration occurs during winch operation, the pawl 704 can quickly return to its original position under the action of the torsion spring, maintaining close contact with the ratchet 703. This prevents the load from slipping, improves the reliability of self-locking, and ensures that the suspended load will not slip. It effectively avoids any possible risk of slippage, improves safety, and enhances the stability of the device body 6 and the base 2 at the lower end of the mounting seat 1 during winch operation. This ensures the overall stability of the winch operation, preventing swaying and tilting, and improving safety and stability.

[0039] Working principle: During operation, the activation of motor 707 drives the rotating shaft 706 to rotate, which in turn drives the connected screw 702 to rotate. Through the threaded connection with screw 702, ratchet 703 translates along the axis of screw 702. As ratchet 703 moves, it engages with pawl 704, allowing the hoisting winch to perform its normal lifting function. When motor 707 stops, the winch's self-locking mechanism immediately takes effect. The strong engagement between ratchet 703 and pawl 704 ensures that the load will not slip, thus providing self-locking protection. The cleaning mechanism 3, through brush 301, moves along with the winch... The automatic cleaning mechanism cleans the winch surface and steel cable to maintain the winch's proper operation. In case of emergencies, such as motor 707 failure or braking system malfunction, the locking mechanism 5 is immediately activated. The locking block 501 inside the rotating shaft 701 is forcibly ejected under rotation and precisely embedded in the pre-set slot 504 of the fixed seat 502, immediately locking the rotating shaft 701 and forcing the hoisting winch to brake urgently in a critical moment. This effectively prevents any possible continuation of operation, thus protecting the mechanical equipment from accidental damage and ensuring the personal safety of the operators. This highlights the high level of safety consideration and meticulous arrangements in the design.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hoisting winch with a self-locking function, comprising a device body (6), characterized in that: A cleaning mechanism (3) is provided on one side of the main body (6) near the upper end. The cleaning mechanism (3) includes a brush (301), a sliding plate (302), two springs (303) and two fixing posts (304). A locking mechanism (5) is provided on one side of the main body (6). The locking mechanism (5) includes multiple locking blocks (501), a fixing seat (502), multiple compression springs (503) and multiple locking slots (504). A rotating outer shell (4) is rotatably provided on one side of the fixing seat (502). The rotating outer shell (4) is rotatably provided with a mounting base (1) on one side, and the main body (6) of the device is provided with a self-locking mechanism (7). The self-locking mechanism (7) includes a rotating shaft (701), two screws (702), two ratchet wheels (703), two pawls (704), two fixing blocks (705), two rotating shafts (706), and a motor (707).

2. The lifting winch with self-locking function according to claim 1, characterized in that: The motor (707) is externally fixed inside the main body (6) of the device. One side of one of the two rotating shafts (706) is fixedly installed at the output end of the motor (707), and the other side of the two rotating shafts (706) away from the motor (707) is rotatably installed inside one side of the mounting base (1). The lower ends of the two fixing blocks (705) are respectively fixedly installed in the shafts of the two rotating shafts (706), and the opposite sides of the two screws (702) are respectively fixedly installed outside the opposite sides of the two rotating shafts (706).

3. The lifting winch with self-locking function according to claim 1, characterized in that: The rotating shaft (701) is externally slidably disposed inside the rotating housing (4). The two ratchet wheels (703) are respectively fixedly disposed on opposite sides of the rotating shaft (701). The two ratchet wheels (703) are internally threadedly connected to the outside of the two screws (702). The upper ends of the two pawls (704) are respectively fixedly disposed inside the mounting base (1) and the upper end of the device body (6). The two ratchet wheels (703) are externally meshed with the lower ends of the two pawls (704).

4. The lifting winch with self-locking function according to claim 1, characterized in that: The rotating shaft (701) is externally rotatably sleeved inside the fixed base (502), and the plurality of slots (504) are externally opened inside the fixed base (502).

5. A hoisting winch with a self-locking function according to claim 1, characterized in that: Multiple locking blocks (501) are slidably disposed inside the rotating shaft (701) on the outside. Multiple compression springs (503) are fixedly disposed on opposite sides of multiple locking blocks (501) on opposite sides. Multiple compression springs (503) are fixedly disposed inside the rotating shaft (701) on opposite sides. One side of the fixing seat (502) is fixedly disposed on one side of the device body (6).

6. A hoisting winch with a self-locking function according to claim 1, characterized in that: The two fixed posts (304) are fixedly installed at both ends inside the mounting base (1) and the device body (6), respectively. The upper ends of the two springs (303) are fixedly installed at the upper end inside the mounting base (1) and the device body (6), respectively. The lower ends of the two springs (303) are fixedly installed at the upper end of the sliding plate (302). The lower end of the sliding plate (302) is fixedly installed at the upper end of the brush (301). The two ends of the sliding plate (302) are slidably installed outside the two fixed posts (304).

7. The lifting winch with self-locking function according to claim 1, characterized in that: The mounting seat (1) and the lower end of the device body (6) are fixedly provided with a base (2), and the two ratchets (703) are semicircular.

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