Gravity balancing device for a passenger lift car

Abstract

This utility model relates to the field of passenger elevator frame technology and discloses a gravity balancing device for a passenger elevator frame, including a first counterweight block. A mounting plate is fixedly connected to the bottom of the first counterweight block, and a second counterweight block is disposed at the bottom of the first counterweight block. A mounting plate is fixedly connected to the top of the second counterweight block. Sliding blocks are fixedly connected to the outer walls of both the first and second mounting plates. A pressure block is slidably connected to the outer wall of each sliding block, and a piston plate is fixedly connected to the outer wall of each sliding block. In this utility model, when the passenger elevator starts or stops, the first counterweight block is pulled to start or stop. The piston plate acts on the air pressure inside the pressure block between the first and second counterweight blocks, thereby buffering the first counterweight block and the slide rail. This allows the first counterweight block and the slide rail to adapt to the weightlessness or overweight phenomenon that occurs during start-up or stop, solving the problem of large impact forces and vibrations generated during the use of the gravity balancing device, and improving the stability of the device.

Description

Technical Field

[0001] This utility model relates to the field of passenger elevator frame technology, and in particular to a gravity balancing device for passenger elevator frames. Background Technology

[0002] Passenger elevators are a major type of elevator, designed specifically for transporting passengers. They are widely used in residential buildings, office buildings, shopping malls, hotels, and other buildings. They not only provide people with convenient vertical transportation, but also play a crucial role in improving the efficiency and comfort of building use. The passenger elevator car frame is the load-bearing structure of the elevator car. Its main function is to support the car's own weight and load, and to transfer these loads to the traction steel wire ropes.

[0003] The gravity balancing device of the passenger elevator car frame is a key component of the elevator system. It is mainly used to balance the weight of the car and the load, reduce the driving torque of the traction machine, and improve the stability and energy efficiency of the elevator operation. Existing gravity balancing devices usually install the counterweight directly on the traction line, which will generate a large impact force and vibration when the elevator starts or stops, thus affecting the stability of the elevator and the comfort of passengers. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a gravity balancing device for passenger elevator frames, which aims to improve the problem that existing gravity balancing devices generate large impact forces and vibrations during use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gravity balancing device for a passenger elevator frame, comprising a counterweight one, a mounting plate one fixedly connected to the bottom of the counterweight one, a counterweight two disposed at the bottom of the counterweight one, a mounting plate two fixedly connected to the top of the counterweight two, sliding blocks fixedly connected to the outer walls of both the mounting plate one and the mounting plate two, a pressure block slidably connected to the outer wall of the sliding block, a piston plate fixedly connected to the outer wall of the sliding block, the outer wall of the piston plate slidably connected to the inside of the pressure block, and both sides of the outer wall of the pressure block... A fixed block is fixedly connected, and a sliding rod is fixedly connected inside the fixed block. A slider is slidably connected to the outer wall of the sliding rod. A spring is sleeved on the outer wall of the sliding rod. One end of the spring is fixedly connected to the outer wall of the slider, and the other end of the spring is fixedly connected to the inner wall of the fixed block. A transmission rod is rotatably connected to the bottom of a mounting plate, and one side of the transmission rod is rotatably connected to the outer wall of the slider. A transmission rod is rotatably connected to the top of a mounting plate, and one side of the transmission rod is rotatably connected to the outer wall of the slider. A limit component is provided on the outer wall of the counterweight.

[0006] Furthermore, the limiting component includes a slide rail, the outer wall of which is fixedly connected to the outer wall of the first counterweight and the outer wall of the second counterweight.

[0007] Furthermore, both the first counterweight and the second counterweight are rotatably connected to a worm gear, and a drive block is fixedly connected to one end of the worm gear.

[0008] Furthermore, the outer wall of the drive block is rotatably connected inside the first counterweight and the second counterweight, and both the first counterweight and the second counterweight are rotatably connected to a worm gear.

[0009] Furthermore, the outer wall of the worm wheel meshes with the outer wall of the worm, and a rotating disk is fixedly connected to the bottom of the worm wheel.

[0010] Furthermore, both the first counterweight and the second counterweight are fixedly connected to a second sliding rod, and the rotating disk has an arc-shaped groove inside.

[0011] Furthermore, a sliding plate is slidably connected to the outer wall of the sliding rod, and a column is fixedly connected to the top of the sliding plate.

[0012] Furthermore, the outer wall of the column is slidably connected inside the arc-shaped groove, and a locking block is fixedly connected to the bottom of the slide plate. The outer wall of the locking block is slidably connected inside the mounting plate one and the mounting plate two.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, when the passenger elevator starts or stops, it will pull the counterweight one to start or stop. The air pressure inside the pressure block will be acted on by the piston plate between the counterweight one and the counterweight two, so that the counterweight one and the slide rail will be buffered. This allows the counterweight one and the slide rail to adapt to the phenomenon of weightlessness or overweight that occurs when starting or stopping, solving the problem of large impact force and vibration generated when the gravity balancing device is used, and improving the stability of the device.

[0015] 2. In this utility model, the worm is driven by the drive block, which in turn drives the worm wheel to rotate. The worm wheel then drives the rotating disk to rotate, and the rotating disk drives the sliding plate to slide through the arc groove and the column, thereby causing the locking block to engage inside the mounting plate one, thus allowing the mounting plate one to be installed on the counterweight one, which improves the convenience of maintenance of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of a gravity balancing device for a passenger elevator frame proposed in this utility model;

[0017] Figure 2 A schematic cross-sectional view of the pressure block of a gravity balancing device for a passenger elevator frame proposed in this utility model;

[0018] Figure 3 This is a schematic cross-sectional view of the counterweight block of a gravity balancing device for a passenger elevator frame proposed in this utility model.

[0019] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0020] Legend:

[0021] 1. Counterweight 1; 2. Slide rail; 3. Drive block; 4. Mounting plate 1; 5. Mounting plate 2; 6. Pressure block; 7. Fixing block; 8. Counterweight 2; 9. Sliding block; 10. Slide rod 1; 11. Piston plate; 12. Transmission rod 1; 13. Transmission rod 2; 14. Spring; 15. Worm gear; 16. Worm wheel; 17. Rotating disk; 18. Column; 19. Arc groove; 20. Slide rod 2; 21. Slide plate; 22. Locking block; 23. Slider. Detailed Implementation

[0022] 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.

[0023] Reference Figure 1 and Figure 2 This utility model provides an embodiment of a gravity balancing device for a passenger elevator frame, comprising a counterweight 1, a mounting plate 4 fixedly connected to the bottom of the counterweight 1, a second counterweight 8 at the bottom of the counterweight 1, a mounting plate 5 fixedly connected to the top of the second counterweight 8, sliding blocks 9 fixedly connected to the outer walls of both the mounting plate 4 and the mounting plate 5, a pressure block 6 slidably connected to the outer wall of the sliding block 9, and a piston plate 11 fixedly connected to the outer wall of the sliding block 9. The outer wall of the piston plate 11 is slidably connected inside the pressure block 6, and both sides of the outer wall of the pressure block 6 are... A fixed block 7 is fixedly connected, and a slide rod 10 is fixedly connected inside the fixed block 7. A slider 23 is slidably connected to the outer wall of the slide rod 10. A spring 14 is sleeved on the outer wall of the slide rod 10. One end of the spring 14 is fixedly connected to the outer wall of the slider 23, and the other end of the spring 14 is fixedly connected to the inner wall of the fixed block 7. A transmission rod 12 is rotatably connected to the bottom of the mounting plate 1 4. One side of the transmission rod 12 is rotatably connected to the outer wall of the slider 23. A transmission rod 23 is rotatably connected to the top of the mounting plate 2 5. One side of the transmission rod 23 is rotatably connected to the outer wall of the slider 23.

[0024] Specifically, during elevator operation, significant inertial forces are generated during startup or shutdown. If the movement of the counterweight is not controlled, it can easily lead to car swaying and equipment wear. At this point, the buffer system consisting of counterweight 1 and counterweight 2 8 comes into play. Counterweight 1 and counterweight 2 8 are not independent; they are securely connected to the sliding block 9 via mounting plate 1 4 and mounting plate 2 5, respectively. Mounting plate 1 4 and mounting plate 2 5 are made of high-strength alloy material with a special surface treatment. The connection points with the counterweight and sliding block are equipped with high-precision bolt holes and positioning pins to ensure tight connections and accurate positioning, reliably transmitting the movement of the counterweight. The force generated by the movement, the sliding block 9, as the key transmission component of the entire buffer system, is shaped to match the slide rail shape inside the pressure block 6, allowing it to slide inside the pressure block 6. The internal space of the pressure block 6 is carefully designed with a regular cavity structure, and the inner wall is precision machined with extremely low surface roughness to reduce the frictional resistance of the sliding block 9 during movement. A piston plate 11 is fixedly installed on the sliding block 9, and a sealing ring of special material is installed on the edge of the piston plate 11. This sealing ring has good elasticity and wear resistance, and can fit tightly against the inner wall of the pressure block 6, thus forming a highly sealed space inside the pressure block 6. When the elevator starts or stops, the counterweight 1 and counterweight 2... Due to inertia, block 8 will experience significant impact force and acceleration changes. At this time, sliding block 9 slides within pressure block 6 under the drive of counterweight block 6. Piston plate 11 subsequently changes the volume of the sealed space inside pressure block 6. When sliding block 9 slides in a certain direction, the gas or liquid on one side of the sealed space, if the liquid medium inside is compressed, will experience a rapid increase in pressure. The resulting reaction force acts on sliding block 9 through piston plate 11, thereby buffering the motion of counterweight block 1 and counterweight block 8 connected to sliding block 9, effectively slowing down their speed changes and reducing the influence of inertial force. At the same time, mounting plate 4 is connected via transmission rod 12, and mounting plate 5 is connected via transmission rod 13. The force generated by the movement of the counterweight is transmitted to the slider 23. The slider 23 works in conjunction with the spring 14. The spring 14 is made of high-quality spring steel with a high elastic coefficient and has good elastic recovery performance. When the force is transmitted to the slider 23, the slider 23 compresses the spring 14, and the spring 14 undergoes elastic deformation to absorb energy, dispersing the force between the counterweight 1 and the counterweight 2, further buffering the movement of the counterweight. Through the combined effect of the pressure buffer inside the pressure block 6 and the elastic buffer of the spring 14, the impact on the counterweight when the elevator starts or stops is greatly reduced, effectively improving the smoothness and safety of the elevator operation and reducing equipment wear.

[0025] Reference Figure 1 and Figure 2 A limiting component is provided on the outer wall of counterweight 1. The limiting component includes a slide rail 2. The outer wall of the slide rail 2 is fixedly connected to the outer wall of counterweight 1. The outer wall of the slide rail 2 is fixedly connected to the outer wall of counterweight 2 8.

[0026] Specifically, slide rails 2 are provided on both sides of counterweight 1 and counterweight 2. The slide rails 2 can slide between preset tracks, which makes it easier to limit the movement trajectory of counterweight 1 and counterweight 2, so as to make them run stably.

[0027] Reference Figure 3 and Figure 4 Both counterweight 1 and counterweight 2 are rotatably connected to a worm gear 15. One end of the worm gear 15 is fixedly connected to a drive block 3. The outer wall of the drive block 3 is rotatably connected to the inside of counterweight 1 and counterweight 2. Both counterweight 1 and counterweight 2 are rotatably connected to a worm wheel 16. The outer wall of the worm wheel 16 meshes with the outer wall of the worm gear 15. The bottom of the worm wheel 16 is fixedly connected to a rotating disk 17. Both counterweight 1 and counterweight 2 are fixedly connected to a slide rod 20. The rotating disk 17 has an arc groove 19 inside. The outer wall of the slide rod 20 is slidably connected to a slide plate 21. The top of the slide plate 21 is fixedly connected to a column 18. The outer wall of the column 18 is slidably connected to the inside of the arc groove 19. The bottom of the slide plate 21 is fixedly connected to a locking block 22. The outer wall of the locking block 22 is slidably connected to the inside of mounting plate 1 and mounting plate 2.

[0028] Specifically, when it is necessary to securely install the mounting plate 4 onto the counterweight block 1, the operator first controls the drive block 3 to rotate, and the worm gear 15 then begins to rotate. The rotation of the worm gear 15 drives the meshing worm wheel 16 to rotate. The worm wheel 16 is mounted on the central axis of the rotating disk 17, ensuring that the rotation of the worm wheel 16 can drive the rotating disk 17 to rotate synchronously. The rotating disk 17 has a circular disc structure. As the rotating disk 17 rotates, its internal arc-shaped groove 19 begins to function. The arc-shaped groove 19 is arc-shaped, and its inner wall is polished to reduce friction with the column 18. The column 18 is a cylindrical rod, one end of which is fixed to the slide plate 21 by welding, and the other end is located inside the arc-shaped groove 19. When the rotating disk 17 rotates, the arc-shaped groove 19... The inner wall of the plate gradually comes into contact with the column 18 and applies a pushing force to it. Due to the shape characteristics of the arc groove 19, as the rotating disk 17 continues to rotate, the column 18 will be pushed by the inner wall of the arc groove 19, which will drive the slide plate 21 to slide along the outer wall of the slide bar 20. During the sliding of the slide plate 21, the locking block 22 fixed on one side of the slide plate 21 gradually approaches the mounting plate 4. The shape of the locking block 22 matches the preset slot inside the mounting plate 4. When the slide plate 21 slides to a specific position, the locking block 22 is just locked into the slot inside the mounting plate 4. Through this mechanical locking method, the mounting plate 4 and the counterweight 1 are firmly connected. Similarly, the same structure and principle mechanism are used to fix the counterweight 28 and the mounting plate 25. Starting from the corresponding drive block, the transmission is sequentially achieved through the worm gear 15, worm wheel 16, rotating disk 17, arc groove 19, column 18, and slide plate 21, ultimately causing the locking block 22 to engage inside the mounting plate 2 5. This completes the stable fixation of the counterweight 2 8 and the mounting plate 2 5, ensuring that there will be no loosening or displacement between the counterweight and the mounting plate during elevator operation, thus guaranteeing the safety and stability of elevator operation.

[0029] Working Principle: When the elevator starts or stops, counterweight 1 and counterweight 2 8 also start or stop. At this time, counterweight 1 and counterweight 2 8 are connected to sliding block 9 by mounting plate 1 4 and mounting plate 2 5 respectively. Sliding block 9 can slide inside pressure block 6. A piston plate 11 is provided on sliding block 9. The piston plate 11 forms a sealed space inside pressure block 6. The pressure inside pressure block 6 can buffer the movement of counterweight 1 and counterweight 2 8. At the same time, mounting plate 1 4 transmits force to slider 23 through transmission rod 1 12, and mounting plate 2 5 transmits force to slider 23 through transmission rod 2 13. This allows the movement of counterweight 1 and counterweight 2 8 to be controlled. The force is dispersed and buffered by spring 14, thereby further buffering the movement of counterweight 1 and counterweight 8. When mounting plate 4 is installed on counterweight 1, it can drive drive block 3, which drives worm gear 15 to rotate. Worm gear 15 will drive worm wheel 16 to rotate, and worm wheel 16 will further drive rotating disk 17 to rotate. When rotating disk 17 rotates, the arc groove 19 inside rotating disk 17 will push column 18 through the inner wall, causing column 18 to drive slide plate 21 to slide on the outer wall of slide bar 20. Under the sliding of slide plate 21, the locking block 22 can be locked into the interior of mounting plate 4. Similarly, this mechanism can be used to fix counterweight 8 and mounting plate 2.

[0030] 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 gravity counterbalance device for a passenger elevator car comprising a counterweight (1), characterized in that: The counterweight one (1) is fixedly connected to the bottom of the mounting plate one (4), the counterweight one (1) is provided with the bottom of the counterweight one (1), the top of the counterweight two (8) is fixedly connected to the top of the counterweight two (8), the outer walls of the mounting plate one (4) and the mounting plate two (5) are both fixedly connected to the sliding block (9), the outer wall of the sliding block (9) is slidably connected to the pressure block (6), the outer wall of the sliding block (9) is fixedly connected to the piston plate (11), the outer wall of the piston plate (11) is slidably connected to the inside of the pressure block (6), the outer walls of the pressure block (6) are fixedly connected to both sides of the outer wall of the pressure block (6), and the inner wall of the fixed block (7) is fixedly connected to the sliding rod one (10). The outer wall of the sliding rod (10) is slidably connected to a slider (23). The outer wall of the sliding rod (10) is fitted with a spring (14). One end of the spring (14) is fixedly connected to the outer wall of the slider (23), and the other end of the spring (14) is fixedly connected to the inner wall of the fixing block (7). The bottom of the mounting plate (4) is rotatably connected to a transmission rod (12). One side of the transmission rod (12) is rotatably connected to the outer wall of the slider (23). The top of the mounting plate (5) is rotatably connected to a transmission rod (13). One side of the transmission rod (13) is rotatably connected to the outer wall of the slider (23). The outer wall of the counterweight (1) is provided with a limit assembly.

2. A gravity balancing device for a guest elevator car frame as defined in claim 1, wherein: The limiting component includes a slide rail (2), the outer wall of which is fixedly connected to the outer wall of the first counterweight (1), and the outer wall of the slide rail (2) is fixedly connected to the outer wall of the second counterweight (8).

3. A gravity balancing device for a guest elevator car frame as defined in claim 1, wherein: Both the first counterweight (1) and the second counterweight (8) are rotatably connected to a worm gear (15), and one end of the worm gear (15) is fixedly connected to a drive block (3).

4. A gravity balancing device for a guest elevator car frame as defined in claim 3, wherein: The outer wall of the drive block (3) is rotatably connected to the interior of the first counterweight (1) and the second counterweight (8), and a worm gear (16) is rotatably connected inside the first counterweight (1) and the second counterweight (8).

5. The gravity balancing device for a passenger elevator frame according to claim 4, characterized in that: The outer wall of the worm wheel (16) meshes with the outer wall of the worm (15), and a rotating disk (17) is fixedly connected to the bottom of the worm wheel (16).

6. A gravity balancing device for a guest elevator car frame as defined in claim 5, wherein: The counterweight one (1) and the counterweight two (8) are both fixedly connected to the sliding rod two (20), and the rotating disk (17) has an arc groove (19) inside.

7. A gravity balancing device for a passenger elevator car frame as defined in claim 6, wherein: The outer wall of the slide bar (20) is slidably connected to a slide plate (21), and the top of the slide plate (21) is fixedly connected to a column (18).

8. A gravity balancing device for a guest elevator car frame as defined in claim 7, wherein: The outer wall of the column (18) is slidably connected to the inside of the arc groove (19), and the bottom of the slide plate (21) is fixedly connected to a locking block (22). The outer wall of the locking block (22) is slidably connected to the inside of the first mounting plate (4) and the second mounting plate (5).

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