Traction device for freight elevator
By introducing a microcontroller control system into the traction device for freight elevators, the tension of the rope is automatically adjusted, and the problems of low accuracy and high operation risks of traditional manual adjustment are solved, and high-precision and safe automatic adjustment are achieved.
Patent Information
- Application Number
- CN202420588978.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-03-26
AI Technical Summary
The traditional freight elevator traction device manually adjusts the tension between the traction wheel and the rope, and the accuracy is affected by the operator's skills and experience, and there is a risk of misoperation when operating at high places or in small spaces.
A traction device for freight elevators is designed, using a single-chip computer control system, adjusting the position of the traction wheel through the motor, and automatically adjusting the tension of the rope to reduce human operation errors.
High-precision tension adjustment is achieved, reducing the safety risks caused by human operation errors, especially when operating at high places or in small spaces, automatic adjustments significantly reduce the risks of operators.
Smart Images
Figure CN222699798U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of transportation equipment, in particular to a traction device for a freight elevator. Background Art
[0002] Freight elevators usually use traction devices to achieve the function of vertical transportation of goods. This traction device is usually driven by an electric motor and connected to the lifting platform of the freight elevator through ropes or steel belts. When the motor is started, it drives the ropes or steel belts, thereby raising or lowering the lifting platform of the freight elevator;
[0003] When the traction device for a traditional freight elevator needs to adjust the tension between the traction wheel and the rope, the fixing screw can be loosened manually to adjust the position of the sleeve, thereby changing the contact point position between the traction wheel and the rope or steel belt to adjust the tension;
[0004] Traditional traction devices for freight elevators have the following problems: the accuracy of manual adjustment is affected by the operator's skills and experience, and may not meet the requirements of high-precision tension adjustment, resulting in poor adjustment effect. In addition, manual adjustment of the traction wheel position needs to be performed during operation, and the operator may face the risk of accidental injury due to misoperation, especially when operating at heights or in a small space. Accidents are more likely to occur. For this reason, we propose a traction device for freight elevators. Utility Model Content
[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a traction device for a freight elevator to reduce the safety risks caused by human operating errors, especially when operating at high places or in a small space. Automatic adjustment can reduce the risks for operators and can effectively solve the problems in the background technology.
[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a traction device for a freight elevator, comprising a wall, a traction machine and a tension adjustment mechanism;
[0007] Wall: The upper and lower inner walls are fixedly connected with evenly distributed mounting frames, the inner sides of the mounting frames are provided with guide rails, the inner walls of the guide rails are slidably connected with eight sliding blocks, the four sliding blocks at the front end are fixedly connected with the adjacent sides of a car, the four sliding blocks at the rear end are fixedly connected with the adjacent sides of a frame, the tops of the car and the frame are respectively fixedly connected with fixing rings, and the insides of the fixing rings are provided with hooks;
[0008] Traction machine: It is set in the middle of the top of the wall. The front and rear ends of the rope on the traction machine extend to the inside of the wall respectively, and the bottom ends of the ropes are fixedly connected to the top of the hook;
[0009] Tensioning adjustment mechanism: It is arranged at the front side of the top of the wall, and the tensioning adjustment mechanism is installed in coordination with the rope;
[0010] Among them: it also includes a single-chip microcomputer, which is arranged on the right side of the wall. The output end of the single-chip microcomputer is electrically connected to the input end of the traction machine. No manual intervention is required when adjusting the tension, which can greatly reduce labor costs and operation time, and reduce safety risks caused by human operation errors. Especially when operating at high places or in a small space, automatic adjustment can reduce the risk of operators.
[0011] Furthermore, evenly distributed weight blocks are provided inside the frame to ensure smooth operation of the entire system.
[0012] Furthermore, evenly distributed rotation grooves are provided inside the sliding blocks, and balls are rotatably connected inside the rotation grooves. The evenly distributed balls are slidably connected to the inner walls of adjacent guide rails, reducing friction and making the movement process smoother.
[0013] Furthermore, it also includes a damper, which is respectively arranged at the front and rear ends of the bottom wall of the wall to reduce shock.
[0014] Furthermore, the tensioning adjustment mechanism includes a fixed frame, a slider, a rotating shaft, a guide slide groove and a traction wheel. The fixed frame is fixedly connected to the left and right ends of the upper surface of the wall respectively. The interior of the fixed frame is provided with a guide slide groove. The inner walls of the guide slide groove are slidably connected with sliders. A rotating shaft is rotatably connected between the two sliders. A traction wheel is provided on the middle fixed sleeve of the rotating shaft. The traction wheel is installed in cooperation with the rope to ensure the rotation of the traction wheel.
[0015] Furthermore, the tensioning adjustment mechanism also includes a screw and a sliding column. The screw is rotatably connected between the upper and lower inner walls of the guide slot at the left end, and the sliding column is rotatably connected between the upper and lower inner walls of the guide slot at the right end. The outer surface of the screw is threadedly connected to the slider at the left end, and the outer surface of the sliding column is slidably connected to the middle part of the slider at the right end, thereby adjusting the tension of the rope.
[0016] Furthermore, the tensioning adjustment mechanism also includes a motor, which is arranged at the top of the fixed frame at the left end, the bottom end of the output shaft of the motor is fixedly connected to the top end of the screw, and the input end of the motor is electrically connected to the output end of the single-chip microcomputer to drive the tensioning adjustment mechanism to operate.
[0017] Compared with the prior art, the utility model has the following advantages:
[0018] 1. When the goods need to be raised or lowered, the traction machine is controlled by the single-chip microcomputer. The traction machine rotates through the traction wheel to drive the rope to start running. The operation of the rope will drive the freight elevator car and frame to slide on the guide rail through the sliding block and move together. Balls are installed in the rotating groove inside the sliding block. These balls are in contact with the outer surface of the guide rail and can roll when moving up and down, reducing the sliding resistance, making the movement of the car and frame more stable and efficient, reducing friction, and making the movement process smoother.
[0019] 2. When the tensioning force needs to be adjusted, the motor operation is regulated by the single-chip microcomputer. The output shaft of the motor drives the screw to rotate, and the rotation of the screw is connected to the slider at the left end through a threaded connection, thereby driving the slider at the left end to slide on the inner wall of the guide slot at the left end and move up or down. At the same time, it drives the slider at the right end to slide on the inner wall of the guide slot at the right end and move up or down. Since the traction wheel is fixedly sleeved in the middle of the rotating shaft, the position of the traction wheel will also be adjusted up or down accordingly. In this way, the contact point position of the rope and the traction wheel will change, thereby adjusting the tension of the rope, which can ensure that the rope or steel belt always maintains appropriate tension under different load conditions to ensure the normal operation and safety of the freight elevator. At the same time, no manual intervention is required, which can greatly reduce labor costs and operation time, and reduce safety risks caused by human operating errors. Especially when operating at high altitudes or in narrow spaces, automatic adjustment can reduce the risk of operators. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the structure of the utility model;
[0021] Figure 2 It is a schematic diagram of the structure of the utility model enlarged at A;
[0022] Figure 3 It is a schematic diagram of the structure of the utility model in a front side section;
[0023] Figure 4 It is a schematic diagram of the structure enlarged at B of the utility model;
[0024] Figure 5 It is a schematic diagram of the structure enlarged at C of the utility model;
[0025] Figure 6 It is a schematic diagram of the structure enlarged at D of the utility model.
[0026] In the figure: 1 wall, 2 traction machine, 3 rope, 4 tension adjustment mechanism, 41 motor, 42 fixed frame, 43 screw, 44 slider, 45 rotating shaft, 46 guide slide, 47 traction wheel, 48 slide column, 5 car, 6 mounting frame, 7 guide rail, 8 damper, 9 load block, 10 frame, 11 sliding block, 12 fixed ring, 13 hook, 14 single chip microcomputer, 15 ball, 16 rotating groove. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] See also Figure 1-6 ,This embodiment provides a technical solution: a traction device for a freight elevator, comprising a wall 1, a traction machine 2 and a tensioning adjustment mechanism 4;
[0029] Wall 1: The upper and lower inner walls thereof are fixedly connected with evenly distributed mounting frames 6, the inner side surfaces of the mounting frames 6 are provided with guide rails 7, the inner walls of the guide rails 7 are slidably connected with eight sliding blocks 11, the interiors of the sliding blocks 11 are provided with evenly distributed rotation grooves 16, the interiors of the rotation grooves 16 are rotatably connected with balls 15, the evenly distributed balls 15 are slidably connected with the inner walls of the adjacent guide rails 7, the four sliding blocks 11 at the front end are fixedly connected with the adjacent side surfaces of a car 5, the four sliding blocks 11 at the rear end are fixedly connected with the adjacent side surfaces of a frame 10, the balls 15 are installed in the rotation grooves 16 inside the sliding blocks 11, these balls 15 are in contact with the outer surface of the guide rail 7, and move up and down. It can roll when moving, reducing the sliding resistance, making the movement of the car 5 and the frame 10 more stable and efficient, reducing the friction, making the moving process smoother, and the frame 10 is provided with evenly distributed load blocks 9 inside, and the tops of the car 5 and the frame 10 are respectively fixedly connected with fixed rings 12, and the insides of the fixed rings 12 are provided with hooks 13, and the hooks 13 are locked with the fixed rings 12, and also include dampers 8, which are respectively arranged at the front and rear ends of the bottom wall of the wall 1. The dampers 8 are used to reduce the shock of the car 5 and the frame 10 when they descend, and the load blocks 9 in the frame 10 are matched with the car 5 and its load-bearing capacity to achieve a balanced state, so as to ensure the smooth operation of the entire system;
[0030] Traction machine 2: It is arranged at the middle of the top of the wall 1. The front and rear ends of the rope 3 on the traction machine 2 extend to the inside of the wall 1 respectively. The bottom ends of the rope 3 are fixedly connected to the top of the hook 13. When the goods need to be raised or lowered, the operation of the traction machine 2 is controlled by the single-chip microcomputer 14. The traction machine 2 rotates and drives the rope 3 to start running through the traction wheel. The operation of the rope 3 will drive the cargo elevator car 5 and the frame 10 to slide on the guide rail 7 through the sliding block 11 respectively. If it is a lifting operation, the traction wheel on the traction machine 2 rotates to drive the rope 3 to contract, and the car 5 is lifted upward, and at the same time, the frame 10 is lowered downward. Conversely, if it is a descending operation, the traction wheel on the traction machine 2 rotates to drive the rope 3 to loosen, so that the car 5 moves downward, and at the same time, the frame 10 is lifted upward;
[0031] Tensioning mechanism 4: It is arranged at the front side of the top of the wall 1. The tensioning mechanism 4 is installed in cooperation with the rope 3. The tensioning mechanism 4 includes a fixed frame 42, a slider 44, a rotating shaft 45, a guide slide 46 and a traction wheel 47. The fixed frame 42 is fixedly connected to the left and right ends of the upper surface of the wall 1 respectively. The interior of the fixed frame 42 is provided with a guide slide 46. The inner wall of the guide slide 46 is slidably connected with the slider 44. The rotating shaft 45 is rotatably connected between the two sliders 44. The middle fixed sleeve of the rotating shaft 45 is provided with a traction wheel 47. The guide wheel 47 is installed in cooperation with the rope 3, and the tension adjustment mechanism 4 also includes a screw 43 and a slide column 48. The screw 43 is rotatably connected between the upper and lower inner walls of the guide slide groove 46 at the left end, and the slide column 48 is rotatably connected between the upper and lower inner walls of the guide slide groove 46 at the right end. The outer surface of the screw 43 is threadedly connected to the slider 44 at the left end, and the outer surface of the slide column 48 is slidably connected to the middle part of the slider 44 at the right end. The tension adjustment mechanism 4 also includes a motor 41, which is arranged at the top end of the fixed frame 42 at the left end, and the bottom end of the output shaft of the motor 41 is connected to the screw 43. The top of the motor 41 is fixedly connected, the input end of the motor 41 is electrically connected to the output end of the single chip computer 14, and when the tensioning force needs to be adjusted, the single chip computer 14 is used to control the operation of the motor 41, and the output shaft of the motor 41 drives the screw 43 to rotate, and the screw 43 rotates through a threaded connection with the slider 44 at the left end, thereby driving the slider 44 at the left end to slide on the inner wall of the guide slot 46 at the left end to move upward or downward, and at the same time drives the slider 44 at the right end to slide on the inner wall of the guide slot 46 at the right end to move upward or downward. The middle part, and then the position of the traction wheel 47 will be adjusted upward or downward accordingly, so that the contact point position of the rope 3 and the traction wheel 47 will change, thereby adjusting the tension of the rope, which can ensure that the rope or steel belt always maintains appropriate tension under different load conditions to ensure the normal operation and safety of the freight elevator. At the same time, no manual intervention is required, which can greatly reduce labor costs and operation time, and reduce safety risks caused by human operation errors. Especially when operating at high places or in narrow spaces, automatic adjustment can reduce the risk of operators;
[0032] The wall 1 further includes a single chip microcomputer 14 , which is disposed on the right side of the wall 1 , and an output end of the single chip microcomputer 14 is electrically connected to an input end of the traction machine 2 .
[0033] The working principle of a traction device for a freight elevator provided by the utility model is as follows: when it is necessary to raise or lower the goods, the traction machine 2 is controlled to operate by the single chip microcomputer 14, and the traction machine 2 rotates to drive the rope 3 to start operating through the traction wheel, and the operation of the rope 3 drives the freight elevator car 5 and the frame 10 to slide on the guide rail 7 through the sliding block 11 respectively, and the ball bearings 15 are installed in the rotating groove 16 inside the sliding block 11. These balls 15 are in contact with the outer surface of the guide rail 7 and can roll when moving up and down, reducing the sliding resistance, so that the car 5 and the frame 10 can move together. The movement of the frame 10 is more stable and efficient, and the friction is reduced, making the movement process smoother. If it is a lifting operation, the traction wheel on the traction machine 2 rotates to drive the rope 3 to contract, and the car 5 is lifted upward, and at the same time, the frame 10 is lowered downward. Conversely, if it is a descending operation, the traction wheel on the traction machine 2 rotates to drive the rope 3 to loosen, so that the car 5 moves downward, and at the same time, the frame 10 is raised upward. The damper 8 is used to reduce the shock of the car 5 and the frame 10 when they are descending. 5 and its load-bearing capacity to achieve a balanced state to ensure that the entire system runs smoothly. When the tensioning force needs to be adjusted, the single-chip microcomputer 14 controls the operation of the motor 41. The output shaft of the motor 41 drives the screw 43 to rotate. The screw 43 rotates through a threaded connection with the slider 44 at the left end, thereby driving the slider 44 at the left end to slide on the inner wall of the guide slot 46 at the left end to move upward or downward, and at the same time drives the slider 44 at the right end to slide on the inner wall of the guide slot 46 at the right end to move upward or downward. Since the traction wheel 47 is fixedly sleeved on the middle part of the rotating shaft 45, the position of the traction wheel 47 will also be adjusted upward or downward accordingly. In this way, the contact point position of the rope 3 and the traction wheel 47 will change, thereby adjusting the tension of the rope, which can ensure that the rope or steel belt always maintains an appropriate tension under different load conditions to ensure the normal operation and safety of the freight elevator. At the same time, no manual intervention is required, which can greatly reduce labor costs and operation time, and reduce safety risks caused by human operation errors. Especially when operating at high places or in narrow spaces, automatic adjustment can reduce the risks of operators.
[0034] It is worth noting that the specific model of the single chip microcomputer 14 disclosed in the above embodiment is S7-200, the traction machine 2 is recommended to use HC65, the motor 41 can be selected YEJ20.55KW-4P, and the single chip microcomputer 14 controls the traction machine 2 and the motor 41 using the methods commonly used in the prior art.
[0035] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.
Claims
1. A traction device for a freight elevator, characterized in that: It comprises a wall (1), a traction machine (2) and a tensioning and adjusting mechanism (4); Wall (1): The upper and lower inner walls thereof are fixedly connected with evenly distributed mounting frames (6), the inner side surfaces of the mounting frames (6) are provided with guide rails (7), the inner walls of the guide rails (7) are slidably connected with eight sliding blocks (11), the four sliding blocks (11) at the front end are fixedly connected with the adjacent side surfaces of a car (5), the four sliding blocks (11) at the rear end are fixedly connected with the adjacent side surfaces of a frame (10), the top ends of the car (5) and the frame (10) are respectively fixedly connected with fixing rings (12), and the insides of the fixing rings (12) are provided with hooks (13); The traction machine (2) is arranged at the middle of the top of the wall (1), the front and rear ends of the rope (3) on the traction machine (2) respectively extend to the inside of the wall (1), and the bottom ends of the rope (3) are fixedly connected to the top of the hook (13); A tensioning adjustment mechanism (4): the tensioning adjustment mechanism (4) is arranged on the front side of the top end of the wall (1), and the tensioning adjustment mechanism (4) is installed in coordination with the rope (3); The invention also includes a single chip computer (14), which is arranged on the right side of the wall (1), and the output end of the single chip computer (14) is electrically connected to the input end of the traction machine (2).
2. A traction device for a freight elevator according to claim 1, characterized in that: The frame (10) is provided with evenly distributed load-bearing blocks (9) inside.
3. A traction device for a freight elevator according to claim 1, characterized in that: The sliding blocks (11) are provided with evenly distributed rotation grooves (16) inside, and the rotation grooves (16) are rotatably connected with balls (15) inside, and the evenly distributed balls (15) are slidably connected to the inner walls of adjacent guide rails (7).
4. A traction device for a freight elevator according to claim 1, characterized in that: It also includes a damper (8), which is respectively arranged at the front and rear ends of the bottom wall of the wall (1).
5. A traction device for a freight elevator according to claim 1, characterized in that: The tension adjustment mechanism (4) comprises a fixed frame (42), a slider (44), a rotating shaft (45), a guide slide groove (46) and a traction wheel (47). The fixed frame (42) is fixedly connected to the left and right ends of the upper surface of the wall (1), respectively. The fixed frame (42) is provided with a guide slide groove (46) inside. The inner wall of the guide slide groove (46) is slidably connected with a slider (44). The rotating shaft (45) is rotatably connected between the two sliders (44). The middle part of the rotating shaft (45) is provided with a traction wheel (47) fixedly sleeved. The traction wheel (47) is installed in cooperation with the rope (3).
6. A traction device for a freight elevator according to claim 5, characterized in that: The tension adjustment mechanism (4) also includes a screw rod (43) and a slide column (48), wherein the screw rod (43) is rotatably connected between the upper and lower inner walls of the guide slide groove (46) at the left end, and the slide column (48) is rotatably connected between the upper and lower inner walls of the guide slide groove (46) at the right end, the outer surface of the screw rod (43) is threadedly connected to the slider (44) at the left end, and the outer surface of the slide column (48) is slidably connected to the middle part of the slider (44) at the right end.
7. A traction device for a freight elevator according to claim 6, characterized in that: The tension adjustment mechanism (4) further comprises a motor (41), wherein the motor (41) is arranged at the top end of the fixed frame (42) at the left end, the bottom end of the output shaft of the motor (41) is fixedly connected to the top end of the screw rod (43), and the input end of the motor (41) is electrically connected to the output end of the single chip computer (14).