Lifting mechanism of lifter

Abstract

The utility model provides a lifting mechanism of a lifter, which relates to the technical field of lifters and comprises a base, two mounting racks are fixedly mounted at the top of the base, and a top plate is fixedly mounted between the tops of the two mounting racks. When the elevator works, a common motor drives the worm gear to rotate through the worm so that the chain can drive the movable plate to ascend, and due to the fact that the worm gear and the worm are provided with self-locking structures, when the elevator breaks down, the worm gear is locked through the worm so that the movable plate can be prevented from rapidly falling off. Therefore, personal injury and cargo damage caused by falling of the elevator from a high place are greatly reduced, the probability of accidents is reduced, time and labor cost generated by rescue is reduced, working efficiency is effectively improved, when the movable plate falls, the brake motor can be rapidly closed, the threaded rod is prevented from continuing to rotate, and the safety of the elevator is improved. The two static threaded rods can brake the movable plate when the chain is broken and falls off, and the reliability of the device can be effectively improved through the two braking modes.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting mechanisms, in particular to a lifting mechanism of an elevator. Background Art

[0002] Lifting mechanism is a mechanical device used to lift people or goods. It has various designs and is widely used in various industries such as warehouses, airports, stations, docks, stages, automated production lines, as well as material transportation, equipment installation, production line automation, construction engineering, logistics warehousing, public transportation, aviation maintenance, medical rescue and other fields.

[0003] Most of the existing elevators lack anti-fall mechanisms or have poor anti-fall mechanisms. When the elevator falls due to mechanical failure, human operating errors, etc. during operation, it will cause serious accidents such as cargo damage and casualties, which will cause people to spend extra costs and time on cargo procurement and worker rescue, affecting normal production activities. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that when the above-mentioned equipment is in use, the anti-falling effect is poor, which leads to increased production costs and reduced work efficiency, and thus a lifting mechanism of a lift is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a lifting mechanism of an elevator, including a base, two mounting frames are fixedly installed on the top of the base, a top plate is fixedly installed between the tops of the two mounting frames, two brake motors are fixedly installed on the top of the top plate, threaded rods are fixedly installed on the output ends of the two brake motors, and the outer walls of the two threaded rods are movably inserted into the interior of the top plate, a base is movably sleeved between the outer walls of the two threaded rods, a sliding groove is opened on one side of the outer walls of the two mounting frames, a movable plate is threadedly connected between the outer walls of the two threaded rods, a weighing platform is fixedly installed on the top of the movable plate, two groups of first ear blocks are fixedly installed on the top of the top plate, and the outer walls of the two groups of first ear blocks are opened with a group of first holes.

[0006] Preferably, a group of rotating shafts are movably inserted into the inner surface walls of the two groups of the first holes, and a group of sprockets are fixedly sleeved on the outer surface walls of the two groups of the rotating shafts.

[0007] Preferably, a worm gear is fixedly sleeved on one side of the outer wall of one of the two groups of rotating shafts, and two ordinary motors are fixedly installed on the top of the top plate.

[0008] Preferably, a worm is fixedly mounted on the output ends of the two common motors, and the outer walls of the two worms are meshingly connected with the inner wall of the worm wheel, and two second ear blocks are fixedly mounted on the top of the top plate.

[0009] Preferably, the outer walls of the two second ear blocks are each provided with a second hole, and the inner walls of the two second holes are movably inserted into the outer wall of the worm.

[0010] Preferably, chains are meshed and transmitted between the outer walls of the two groups of sprockets, and the outer walls of the two chains are movably inserted inside the top plate, and a movable plate is fixedly connected between the bottoms of the two chains.

[0011] Preferably, a counterweight block is fixedly connected between the bottoms of the two chains, and the inner surface walls of the two slide grooves are movably inserted into the outer surface wall of the counterweight block.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, when the elevator is working, the ordinary motor will drive the worm wheel to rotate through the worm, so that the chain drives the moving plate to rise. Since the worm gear has a self-locking structure, when the elevator fails, the worm will lock the worm wheel to prevent the moving plate from falling quickly, thereby greatly reducing personal injury and cargo damage caused by the elevator falling from a height, reducing the probability of accidents, and reducing the time and manpower costs generated by rescue, thereby effectively improving work efficiency. When the moving plate falls, the brake motor will be quickly turned off to prevent the threaded rod from continuing to rotate. The two stationary threaded rods can brake the moving plate when the chain breaks and falls off. The two braking methods can effectively improve the reliability of the device.

[0014] 2. In the utility model, when the movable plate rises, the threaded rod will be driven to rotate by the brake motor, and the threaded rod can assist the movable plate to rise, thereby reducing the workload of the chain and improving the overall service life of the device. The weighing platform on the movable plate can weigh the moving goods and personnel to prevent the elevator from being damaged due to overloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a main structural stereogram of a lifting mechanism of a lift;

[0016] Figure 2 A partial top view of a lifting mechanism of a lift proposed by the utility model;

[0017] Figure 3 A partial top view of a lifting mechanism of a lift proposed by the utility model;

[0018] Figure 4 The utility model provides a plan view of a lifting mechanism of a lift.

[0019] Legend:

[0020] 1. Base; 2. Mounting frame; 3. Top plate; 4. Brake motor; 5. Threaded rod; 6. Slide groove; 7. Moving plate; 8. Weighing platform; 9. First ear block; 10. First hole; 11. Rotating shaft; 12. Sprocket; 13. Worm gear; 14. Ordinary motor; 15. Worm; 16. Second ear block; 17. Second hole; 18. Chain; 19. Counterweight block. DETAILED DESCRIPTION

[0021] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0023] Embodiment 1, as Figure 1-Figure 4 As shown, the utility model provides a lifting mechanism of an elevator, including a base 1, characterized in that: two mounting frames 2 are fixedly installed on the top of the base 1, a top plate 3 is fixedly installed between the tops of the two mounting frames 2, two brake motors 4 are fixedly installed on the top of the top plate 3, threaded rods 5 are fixedly installed on the output ends of the two brake motors 4, and the outer walls of the two threaded rods 5 are movably inserted in the interior of the top plate 3, the base 1 is movably sleeved between the outer walls of the two threaded rods 5, a slide groove 6 is opened on one side of the outer walls of the two mounting frames 2, a moving plate 7 is threadedly connected between the outer walls of the two threaded rods 5, a weighing platform 8 is fixedly installed on the top of the moving plate 7, two groups of first ear blocks 9 are fixedly installed on the top of the top plate 3, the outer walls of the two groups of first ear blocks 9 are opened with a group of first holes 10, the inner walls of the two groups of first holes 10 are movably inserted with a group of rotating shafts 11, and the outer walls of the two groups of rotating shafts 11 are fixedly sleeved with a group of sprockets 12.

[0024] The effect achieved by the entire embodiment 1 is that when the brake motor 4 is working, it will drive the threaded rod 5 to rotate. The rotating threaded rod 5 can assist the movable plate 7 to rise, thereby avoiding damage to internal parts due to excessive pressure, thereby extending the service life of the device and reducing the maintenance and replacement costs of the crane. When the movable plate 7 descends, the brake motor 4 is quickly turned off to keep the threaded rod 5 still, thereby jamming the movable plate 7. Braking through various devices can ensure the safety of goods and personnel. The weighing platform 8 can weigh the goods and personnel on the crane to avoid overweight operation of the crane and aggravate the wear of the device.

[0025] Embodiment 2, as Figure 2-Figure 4As shown, a worm gear 13 is fixedly sleeved on one side of the outer wall of one of the two groups of rotating shafts 11, two ordinary motors 14 are fixedly installed on the top of the top plate 3, and worms 15 are fixedly installed on the output ends of the two ordinary motors 14, and the outer walls of the two worms 15 are meshed and connected with the inner walls of the worm gear 13, two second ear blocks 16 are fixedly installed on the top of the top plate 3, the outer walls of the two second ear blocks 16 are opened with second holes 17, and the inner walls of the two second holes 17 are movably inserted with the outer walls of the worm gear 15, chains 18 are meshed and transmitted between the outer walls of the two groups of sprocket wheels 12, and the outer walls of the two chains 18 are movably inserted inside the top plate 3, a movable plate 7 is fixedly connected between the bottoms of the two chains 18, a counterweight 19 is fixedly connected between the bottoms of the two chains 18, and the inner walls of the two slide grooves 6 are movably inserted with the outer walls of the counterweight 19.

[0026] The effect achieved by the entire embodiment 2 is that after the ordinary motor 14 is started, it is driven by the worm 15 to rotate together with its worm wheel 13, and the worm wheel 13 causes the rotating shaft 11 and the sprocket 12 to start rotating. When the sprocket 12 rotates, it can drive the counterweight block 19 at one end to rise and fall freely, so that it slides inside the slide groove 6, and drives the moving plate 7 at one end, so that it can drive the relevant goods and personnel to rise and fall. When the crane fails and causes the moving plate 7 to drop rapidly, the moving plate 7 will drive the chain 18 to move together, and the chain 18 causes the sprocket 12 to drive the rotating shaft 11 and the worm wheel 13 to move, but the worm wheel 13 cannot drive the worm 15 meshing with it. The worm 15 fixes the position of the moving plate 7 through self-locking to prevent casualties and damage to goods caused by falling from a height.

[0027] Working principle: when the lift is working, people can make the relevant goods or workers come to the top of the moving plate 7. At this time, the weighing platform 8 can weigh the goods and workers on the moving plate 7 to avoid overloading of the lifter. The ordinary motor 14 starts to start, driving the worm 15 at the output end to start rotating inside the second ear block 16. When the worm 15 rotates, it will drive the worm wheel 13 meshing with it to rotate together. The worm wheel 13 can make the rotating shaft 11 fixedly installed on one side of the outer wall rotate inside the first hole 10. The rotating shaft 11 will drive the sprocket 12 to start rotating, so that the chain 18 approaches the counterweight block 19 and descends, driving the counterweight block 19 to slide inside the slide groove 6. The chain 18 and the counterweight block 19 cooperate with each other to pull up the moving plate 7 at one end, driving the relevant goods or personnel to rise. At the same time, the brake motor 4 also starts to start, driving the threaded rod 5 starts to rotate, and the rotating threaded rod 5 will assist the ordinary motor 14 under the action of the surface thread to drive the movable plate 7 to rise. When the lifter fails, since the worm 15 is meshed and connected with the worm wheel 13 and has a self-locking mechanism, the worm wheel 13 will remain stationary under the action of the worm 15, and the stationary worm wheel 13 can keep the sprocket 12 stationary through the rotating shaft 11. The stationary sprocket 12 can prevent the chain 18 on the outer wall from moving and pull the descending movable plate 7 in time. At the same time, the brake motor 4 is turned off at this time, and the internal electromagnet also loses power, so that the brake quickly holds the motor rotor under the action of the spring, thereby quickly stopping the rotation of the motor, so that the position of the threaded rod 5 remains fixed. The two stationary threaded rods 5 cooperate with each other to fix the position of the movable plate 7 when the chain 18 breaks or falls off from the surface of the sprocket 12.

[0028] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A lifting mechanism of an elevator, comprising a base (1), characterized in that: Two mounting frames (2) are fixedly installed on the top of the base (1), a top plate (3) is fixedly installed between the tops of the two mounting frames (2), two brake motors (4) are fixedly installed on the top of the top plate (3), threaded rods (5) are fixedly installed on the output ends of the two brake motors (4), and the outer walls of the two threaded rods (5) are movably inserted into the interior of the top plate (3), a base (1) is movably sleeved between the outer walls of the two threaded rods (5), a slide groove (6) is provided on one side of the outer walls of the two mounting frames (2), a movable plate (7) is threadedly connected between the outer walls of the two threaded rods (5), a weighing platform (8) is fixedly installed on the top of the movable plate (7), two groups of first ear blocks (9) are fixedly installed on the top of the top plate (3), and the outer walls of the two groups of first ear blocks (9) are provided with a group of first holes (10).

2. The lifting mechanism of a lift according to claim 1, characterized in that: A set of rotating shafts (11) are movably inserted into the inner surface walls of the two sets of the first holes (10), and a set of sprockets (12) are fixedly sleeved on the outer surface walls of the two sets of the rotating shafts (11).

3. The lifting mechanism of a lift according to claim 2, characterized in that: A worm gear (13) is fixedly sleeved on one side of the outer wall of one of the two groups of rotating shafts (11), and two common motors (14) are fixedly mounted on the top of the top plate (3).

4. The lifting mechanism of a lift according to claim 3, characterized in that: The output ends of the two common motors (14) are both fixedly mounted with worms (15), and the outer walls of the two worms (15) are meshingly connected with the inner wall of the worm wheel (13), and the top of the top plate (3) is fixedly mounted with two second ear blocks (16).

5. The lifting mechanism of a lift according to claim 4, characterized in that: The outer walls of the two second ear blocks (16) are each provided with a second hole (17), and the inner walls of the two second holes (17) are movably inserted into the outer wall of the worm (15).

6. The lifting mechanism of a lift according to claim 5, characterized in that: Chains (18) are meshed and transmitted between the outer walls of the two groups of sprocket wheels (12), and the outer walls of the two chains (18) are movably inserted inside the top plate (3), and a movable plate (7) is fixedly connected between the bottoms of the two chains (18).

7. The lifting mechanism of a lift according to claim 6, characterized in that: A counterweight (19) is fixedly connected between the bottoms of the two chains (18), and the inner walls of the two slide grooves (6) are movably inserted into the outer wall of the counterweight (19).

Images