Brake positioning device applied to cargo lifting system
By combining the design of the braking mechanism and positioning components, the problem of unstable car stopping was solved, achieving precise and stable car stopping, and improving the safety and transportation quality of the cargo lifting system.
Patent Information
- Application Number
- CN202423297368.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-30
AI Technical Summary
In existing cargo lifting devices, the car stops unstably and is not accurately positioned. Furthermore, in emergency situations, it cannot be guaranteed that the car will remain fixed in its current position, posing a safety hazard.
The design employs a combination of braking mechanism and positioning components. The braking mechanism achieves stable stopping of the car by clamping the drive shaft with brake shoes, while the positioning components ensure accurate stopping of the car by precisely aligning the positioning optical shaft with the positioning block.
It achieves precise and stable stopping of the car, improves safety and equipment protection, and ensures reliable positioning of the car at the designated location.
Smart Images
Figure CN223547531U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of hoisting technology, and specifically to a braking and positioning device applied to a cargo hoisting system. Background Technology
[0002] A hoist is a lifting device primarily used to lift goods or personnel to higher or lower positions. Hoists are widely used in production lines, warehouses, stations, airports, hospitals, shopping malls, and other locations. Cargo lifting devices are typically used in assembly workshops or warehouses, enabling the vertical transport of goods from the first floor to the second floor, increasing storage space and work efficiency.
[0003] The structure of a traditional cargo lifting device is as follows: The cargo lifting device includes a frame assembly, within which a car and a counterweight are vertically connected. A drive shaft and a drive device for driving the drive shaft are located on the top of the frame assembly. A sprocket is fixedly mounted on the drive shaft, and a chain meshes with the sprocket. One end of the chain is connected to the car, and the other end is connected to the counterweight. The drive device drives the drive shaft to rotate, which in turn drives the sprocket to rotate. The continuous rotation of the sprocket allows the chain to circulate, thereby causing the car to move up and down relative to the frame assembly.
[0004] Currently, when the car stops at a floor, the main method to stop the car is to stop the drive shaft by stopping the drive unit. However, relying solely on the drive unit to stop the car lacks reliability. A single braking method may reduce its braking effect after long-term use due to mechanical component fatigue, which may not ensure that the car stops accurately and stably at the preset floor. On the other hand, in case of emergencies such as power outages or control system failures during the operation of the cargo lifting device, the drive unit may not be able to completely and effectively fix the car in its current position, and the car may move unexpectedly due to gravity.
[0005] Therefore, ensuring that the car stops stably and accurately at the preset floor of the cargo lifting device is a technical problem that urgently needs to be solved. Utility Model Content
[0006] In view of this, the present invention provides a braking and positioning device for a cargo lifting system to overcome the technical problems of unstable car stopping and inaccurate positioning in the prior art.
[0007] To achieve the above objectives, the technical solution of this utility model is as follows:
[0008] A braking and positioning device for a cargo lifting system, the key features of which are: a frame assembly, wherein a car and a counterweight structure are respectively provided at both ends along the height direction of the frame assembly, a top support frame is fixedly provided at the upper end of the frame assembly, a drive shaft and a drive assembly for driving the drive shaft are rotatably mounted on the top support frame, a sprocket is fixedly sleeved on the drive shaft, and a chain meshing with the sprocket is provided on the sprocket, one end of the chain is fixedly connected to the car, and the other end is fixedly connected to the counterweight structure;
[0009] The top support frame is equipped with a braking mechanism, which is used to release or lock the drive shaft.
[0010] Each floor of the frame assembly is equipped with a door frame corresponding to the pre-set stopping position of the car. A positioning component is provided between the car and the door frame, which is used to make the car stop accurately at the designated position.
[0011] With the above structure, the drive assembly drives the transmission shaft to rotate, which in turn drives the sprocket to rotate. The continuous rotation of the sprocket enables the chain to rotate, thereby pulling the car upward against gravity. At the same time, the counterweight structure descends under the action of gravity. When the car reaches the second floor, the drive assembly stops driving due to the precise positioning action of the positioning assembly. At the same time, the braking mechanism locks the transmission shaft, and the car can accurately and stably stop at the height of the second floor.
[0012] Preferably, the braking mechanism includes a brake drum fixedly sleeved on the transmission shaft and two sets of brake shoes located on both sides of the brake drum. A base is fixedly mounted on the top support frame, and a pusher is mounted on the base. The pusher is equipped with a push rod that can move up and down, and a brake lever assembly is connected between the push rod and the two sets of brake shoes.
[0013] The pusher pushes the push rod upward, and under the transmission action of the brake lever assembly, it can force the two sets of brake shoes away from the brake drum; the push rod moves downward, and under the transmission action of the brake lever assembly, it can make the two sets of brake shoes hug the brake drum.
[0014] Preferably, the positioning component includes a positioning block disposed on the top of the door frame, a positioning optical axis and a driver disposed on the top of the car, the driver being used to drive the positioning optical axis to extend and retract toward the positioning block, and the positioning block having a connecting through hole in the middle that can accommodate the positioning optical axis.
[0015] Preferably, the actuator is an electric cylinder.
[0016] Preferably, a mounting base plate is fixedly provided on the top of the door frame, the mounting seat of the electric cylinder is fixedly connected to the mounting base plate, a guide sleeve extending along its length is fixedly provided on the mounting base plate, and the positioning optical axis is slidably connected inside the guide sleeve.
[0017] Preferably, the positioning optical axis and its corresponding driver are provided in four sets, and the four sets of positioning optical axes and drivers are respectively set at the four ends of the top of the car.
[0018] Preferably, the positioning block is welded and fixed to the door frame.
[0019] Compared with the prior art, the beneficial effects of this utility model are:
[0020] 1. The braking and positioning device for cargo lifting systems provided by this utility model, in the initial state, the car is located at the bottom of the frame assembly, the counterweight structure is located at the top of the frame assembly, the braking mechanism releases the transmission shaft, the drive component drives the transmission shaft to rotate, which drives the sprocket to rotate. The continuous rotation of the sprocket enables the chain to rotate, thereby pulling the car to rise against gravity. At the same time, the counterweight structure descends under the action of gravity. When the car reaches the second floor, under the precise positioning action of the positioning component, the drive component stops driving. At the same time, the braking mechanism locks the transmission shaft, and the car can accurately and stably stop at the height of the second floor.
[0021] 2. By setting up a braking mechanism and positioning components, the reliability of the car brake can be improved, providing better safety and equipment protection. At the same time, the positioning components can ensure that the car stops accurately at the designated position, further improving the quality of transportation. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of a braking and positioning device used in a cargo lifting system.
[0023] Figure 2 This is a schematic diagram showing the top structure of the cargo lifting system;
[0024] Figure 3 This is a partial schematic diagram showing the structure of braking mechanism 5;
[0025] Figure 4 This is a schematic diagram illustrating the lower structure of the cargo lifting system;
[0026] Figure 5 This is a schematic diagram illustrating the superstructure of the cargo lifting system;
[0027] Figure 6 A partial schematic diagram to show the specific structure of positioning component 6. Detailed Implementation
[0028] The present invention will be further described below with reference to the embodiments and accompanying drawings.
[0029] like Figure 1 and 2As shown, a braking and positioning device for a cargo lifting system includes a rectangular frame assembly 1. A car 2 and a counterweight structure 7 are respectively mounted at both ends of the frame assembly 1 along its height direction. A top support frame 11 is fixedly mounted on the upper end of the frame assembly 1. A drive shaft 3 and a drive assembly 4 for driving the drive shaft 3 are rotatably mounted on the top support frame 11. A sprocket 31 is fixedly mounted on the drive shaft 3, and a chain 32 meshes with the sprocket 31 for transmission. One end of the chain 32 is fixedly connected to the car 2, and the other end is fixedly connected to the counterweight structure 7. A braking mechanism 5 is provided on the top support frame 11, which can release or lock the drive shaft 3. Figure 4 and 5 As shown, each floor of the frame assembly 1 is provided with a door frame 12 corresponding to the pre-set stopping position of the car 2. In this embodiment, the cargo lifting system has two floors. That is, the lower part of the frame assembly 1 is provided with a door frame 12 corresponding to the height of the first floor, and the upper part of the frame assembly 1 is also provided with a door frame 12 corresponding to the height of the second floor. A positioning component 6 is provided between the car 2 and the door frame 12. The positioning component 6 enables the car 2 to stop accurately on the first and second floors.
[0030] Based on the above structural design, the working principle of the braking and positioning device is as follows: In the initial state, the car 2 is located at the bottom of the frame assembly 1, and the counterweight structure 7 is located at the top of the frame assembly 1. The braking mechanism 5 releases the drive shaft 3, and the drive component 4 drives the drive shaft 3 to rotate, which in turn drives the sprocket 31 to rotate. The continuous rotation of the sprocket 31 causes the chain 32 to rotate, thereby pulling the car 2 upward against gravity. At the same time, the counterweight structure 7 descends under the action of gravity. When the car 2 reaches the second floor, the drive component 4 stops driving under the precise positioning action of the positioning component 6. At the same time, the braking mechanism 5 locks the drive shaft 3, and the car 2 can accurately and stably stop at the height of the second floor. By setting the braking mechanism 5 and the positioning component 6, the reliability of the car 2's braking can be improved, providing better safety assurance and equipment protection. At the same time, the positioning component 6 can ensure that the car 2 stops accurately at the designated position, further improving the transportation quality.
[0031] Furthermore, for example Figure 3As shown, the braking mechanism 5 includes a brake drum 51 fixedly sleeved on the drive shaft 3 and two sets of brake shoes 52 located on both sides of the brake drum 51. A base is fixed on the top support frame 11, and a pusher 53 is provided on the base. The pusher 53 is provided with a push rod 54 that can move up and down. A brake lever assembly 55 connects the push rod 54 and the two sets of brake shoes 52. When the pusher 53 pushes the push rod 54 upward, under the transmission action of the brake lever assembly 55, it can force the two sets of brake shoes 52 away from the brake drum 51. At this time, the drive assembly 4 can drive the drive shaft 3 to rotate, so that the car 2 moves up and down. When the car 2 reaches the designated floor, the pusher 53 drives the push rod 54 downward. Under the transmission action of the brake lever assembly 55, it can make the two sets of brake shoes 52 tightly adhere to the surface of the brake drum 51 and hold the brake drum 51, so that the brake drum 51 and the drive shaft 3 stop rotating. In this embodiment, the braking mechanism 5 adopts an electro-hydraulic drum brake. The braking function is achieved by an electro-hydraulic drum brake, which is existing technology. The structure of the brake lever assembly 55 will not be described in detail here.
[0032] Please refer to Figure 4 and 6 The positioning component 6 includes a positioning block 61 disposed on the top of the door frame 12, a positioning optical shaft 62 disposed on the top of the car 2, and a driver 63. The driver 63 can drive the positioning optical shaft 62 to extend and retract towards the positioning block 61. In this embodiment, the positioning block 61 is fixed to the door frame 12 by welding. The positioning block 61 has a connecting through hole a in the middle that can accommodate the positioning optical shaft 62. When the positioning optical shaft 62 detects and senses the positioning block 61, the driver 63 can drive the positioning optical shaft 62 to move towards the positioning block 61 and pass through the connecting through hole a. The positioning optical shaft 62 can be engaged in the connecting through hole a, and the car 2 can stop accurately and stably at that floor.
[0033] In this embodiment, the driver 63 is an electric cylinder, which drives the positioning optical axis 62 to move, and has the technical advantages of high position accuracy and precise speed control.
[0034] For details, please refer to the following: Figure 6 A mounting base plate 64 is fixedly welded to the top of the door frame 12. The mounting seat of the electric cylinder is fixedly connected to the mounting base plate 64. A guide sleeve 65 extending along its length is fixedly mounted on the mounting base plate 64, and the positioning optical shaft 62 is slidably connected inside the guide sleeve 65. With this design, the guide sleeve 65 can provide a precise linear motion trajectory for the positioning optical shaft 62, ensuring the direction of movement of the positioning optical shaft 62, reducing friction and wear between components, and making the movement of the positioning optical shaft 62 more stable.
[0035] To ensure the reliability and force balance of positioning component 6, refer to Figure 4 and Figure 5The positioning optical axis 62 and its corresponding driver 63 are provided in four sets. The four sets of positioning optical axes 62 and drivers 63 are respectively set at the four ends of the top of the car 2. The top of the door frame 12 on the first and second floors is provided with four sets of positioning blocks 61 corresponding to the positioning optical axis 62.
[0036] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.
Claims
1. A braking and positioning device applied to a cargo lifting system, characterized in that: The frame assembly includes a frame assembly (1), in which a car (2) and a counterweight structure (7) are respectively provided at both ends along its height direction. A top support frame (11) is fixedly provided at the upper end of the frame assembly (1). A drive shaft (3) and a drive assembly (4) for driving the drive shaft (3) to rotate are rotatably mounted on the top support frame (11). A sprocket (31) is fixedly sleeved on the drive shaft (3). A chain (32) meshes with the sprocket (31) for transmission. One end of the chain (32) is fixedly connected to the car (2), and the other end is fixedly connected to the counterweight structure (7). The top support frame (11) is provided with a braking mechanism (5), which is used to release or lock the drive shaft (3); The frame assembly (1) is provided with door frames (12) at each floor corresponding to the car (2) and a positioning component (6) is provided between the car (2) and the door frame (12). The positioning component (6) is used to make the car (2) stop accurately at the designated position.
2. The braking and positioning device for a cargo lifting system according to claim 1, characterized in that: The braking mechanism (5) includes a brake drum (51) fixedly sleeved on the transmission shaft (3) and two sets of brake shoes (52) located on both sides of the brake drum (51). A base is fixed on the top support frame (11), and a pusher (53) is provided on the base. A push rod (54) that can move up and down is provided on the pusher (53). A brake lever assembly (55) is connected between the push rod (54) and the two sets of brake shoes (52). The pusher (53) pushes the push rod (54) upward, and under the transmission action of the brake lever assembly (55), it can force the two sets of brake shoes (52) away from the brake drum (51); the push rod (54) moves downward, and under the transmission action of the brake lever assembly (55), it can make the two sets of brake shoes (52) hug the brake drum (51).
3. The braking and positioning device for a cargo lifting system according to claim 1, characterized in that: The positioning component (6) includes a positioning block (61) disposed on the top of the door frame (12), a positioning optical axis (62) and a driver (63) disposed on the top of the car (2). The driver (63) is used to drive the positioning optical axis (62) to extend and retract toward the positioning block (61). The positioning block (61) has a connecting through hole (a) in the middle that can accommodate the positioning optical axis (62) to pass through.
4. The braking and positioning device for a cargo lifting system according to claim 3, characterized in that: The actuator (63) is an electric cylinder.
5. The braking and positioning device for a cargo lifting system according to claim 4, characterized in that: The top of the door frame (12) is fixedly provided with a mounting base plate (64), the mounting seat of the electric cylinder is fixedly connected to the mounting base plate (64), the mounting base plate (64) is fixedly provided with a guide sleeve (65) extending along its length direction, and the positioning optical axis (62) is slidably connected in the guide sleeve (65).
6. The braking and positioning device for a cargo lifting system according to claim 3, characterized in that: The positioning optical axis (62) and its corresponding driver (63) are provided in four sets, and the four sets of positioning optical axis (62) and driver (63) are respectively located at the four ends of the top of the car (2).
7. The braking and positioning device for a cargo lifting system according to claim 3, characterized in that: The positioning block (61) is welded and fixed to the door frame (12).