Lift car weight balancing mechanism of passenger elevator

Abstract

The utility model discloses a passenger elevator car weight balancing mechanism, which relates to the technical field of elevators and comprises guide rails symmetrically arranged, a counterweight housing is slidably arranged between the guide rails through guide shoes, a counterweight block is arranged in the counterweight housing, a mounting rack is arranged at the top of the counterweight housing, an extrusion part is arranged on the bottom surface of the mounting rack, and a guide wheel is rotatably arranged on the mounting rack; a lubricating piece is arranged in the guide shoe; by using the lubricating piece, lubricating oil can be conveniently smeared between the guide shoe and the guide rail, friction force between the guide shoe and the guide rail is reduced, and therefore abrasion between the guide shoe and the guide rail is reduced, and the phenomenon that a counterweight block shakes and deviates when moving due to the fact that a gap between the guide shoe and the guide rail is too large is avoided. Therefore, the running stability and safety of the elevator are improved.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and in particular to a weight balancing mechanism for passenger elevator cars. Background Technology

[0002] The elevator car weight balancing mechanism is a core component of the elevator system, primarily used to balance the weight of the car, reduce the load on the motor, and ensure smooth, efficient, and safe elevator operation. Its core is the counterweight system, which, together with wire ropes, guide rails, and other components, achieves the balancing function. However, in existing elevator car weight balancing mechanisms, friction between the guide shoes and guide rails increases the gap between them, causing the counterweight to wobble and shift during movement, affecting the stability and safety of the elevator. Summary of the Invention

[0003] This utility model proposes a weight balancing mechanism for passenger elevator cars to solve the problems in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A weight balancing mechanism for a passenger elevator car includes a counterweight frame symmetrically arranged on guide rails, a counterweight block slidably arranged between the guide rails via guide shoes, a mounting frame on the top of the counterweight frame, a pressing component for pressing the counterweight block on the bottom surface of the mounting frame, and a guide wheel rotatably arranged on the mounting frame.

[0006] The guide shoe is equipped with a lubricant.

[0007] Preferably, the lubricant includes an oil cavity formed inside the guide shoe, with a plurality of oil outlet holes evenly formed at the bottom of the oil cavity, and a ball groove formed at the oil outlet end of the oil outlet hole, with a ball movably engaged in the ball groove, and the ball contacting the inner wall of the guide rail.

[0008] Preferably, the top of the oil chamber is provided with an oil filling hole, and a plug is provided inside the oil filling hole.

[0009] Preferably, the extrusion component includes a sleeve disposed on the bottom surface of the mounting bracket, a threaded sleeve rotatably disposed on the bottom surface of the sleeve, and a short lead screw threadedly connected to the threaded sleeve, wherein the top of the short lead screw extends into the sleeve, and a pressure plate is rotatably disposed at the bottom of the short lead screw.

[0010] Preferably, the top surface of the threaded sleeve is provided with an annular slider, and the bottom surface of the sleeve is provided with an annular groove to match the annular slider, and the cross-section of the annular slider and the annular groove are both T-shaped.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0012] This invention utilizes a lubricating component to facilitate the application of lubricating oil between the guide shoe and the guide rail, reducing friction between them and thus minimizing wear. This prevents excessive gaps between the guide shoe and the guide rail, which could cause the counterweight to wobble and shift during movement, thereby improving the stability and safety of the elevator operation. Furthermore, the use of a pressing component facilitates the pressing of the counterweight, preventing it from sliding during vertical movement and thus improving the movement of the elevator car. Attached Figure Description

[0013] Figure 1 A structural schematic diagram from an orthographic perspective is shown according to an embodiment of the present invention;

[0014] Figure 2 A cross-sectional structural diagram from a frontal view is shown according to an embodiment of the present invention;

[0015] Figure 3 A schematic diagram of the counterweight frame and counterweight block provided according to an embodiment of the present invention is shown;

[0016] Figure 4 A schematic diagram of the structure of the extrusion part according to an embodiment of the present invention is shown;

[0017] Figure 5 A schematic diagram of the structure of the lubricating component provided according to an embodiment of the present invention is shown;

[0018] Figure 6 for Figure 5 A magnified view of a portion of point A in the middle.

[0019] Legend:

[0020] 1. Guide rail; 2. Counterweight frame; 3. Counterweight block; 4. Mounting bracket; 5. Guide wheel; 6. Guide shoe; 7. Pressure plate; 8. Sleeve; 9. Short lead screw; 10. Threaded sleeve; 11. Hole plug; 12. Oil cavity; 13. Oil outlet; 14. Ball bearing; 15. Annular slider. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1 - Figure 6This utility model provides a technical solution:

[0023] A weight balancing mechanism for a passenger elevator car includes guide rails symmetrically arranged within an elevator shaft to guide the vertical movement of the elevator car and the balancing mechanism. A counterweight frame 2 is slidably mounted between the guide rails 1 via guide shoes 6, for holding counterweight blocks 3. The guide shoes 6 ensure the vertical movement of the balancing mechanism. Each counterweight block 3 is made of cast iron or steel and is used to reduce the load on the elevator motor, improve operating efficiency, and ensure smooth elevator operation. A mounting bracket 4 is located at the top of the counterweight frame 2, and a pressing element is provided on the bottom surface of the mounting bracket 4 for pressing the counterweight blocks 3. The pressing element facilitates... The counterweight 3 is compressed to prevent it from sliding during vertical movement, thus facilitating the movement of the elevator car. A guide wheel 5 is rotatably mounted on the mounting frame 4 to change the direction of the wire rope, allowing the counterweight 3 to move relative to the elevator car. A lubricant is installed inside the guide shoe 6, which facilitates the application of lubricant between the guide shoe 6 and the guide rail 1, reducing friction and wear. This prevents excessive gaps between the guide shoe 6 and the guide rail 1, which could cause the counterweight 3 to wobble and shift during movement, thereby improving the stability and safety of the elevator operation.

[0024] In the process of installing the balancing mechanism, the guide rails 1 are first installed symmetrically in the elevator shaft. Then, the counterweight 3 is installed on the guide rails 1 through the counterweight frame 2 and the guide shoe 6. Next, the mounting frame 4 and the guide wheel 5 are installed on the top surface of the counterweight frame 2. Then, the guide wheel 5 is wound with a steel wire rope, with one end of the steel wire rope fixed to the top surface of the elevator car and the other end fixed to the counterweight frame 2, so that the movement direction of the counterweight 3 is opposite to the movement direction of the elevator car.

[0025] In this utility model, the lubricating component includes an oil cavity 12 formed inside the guide shoe 6. Multiple oil outlet holes 13 are evenly formed at the bottom of the oil cavity 12. A ball groove is formed at the oil outlet end of the oil outlet hole 13. A ball 14 is movably engaged in the ball groove and contacts the inner wall of the guide rail 1. By using the ball 14, the oil outlet hole 13 can be blocked to prevent the lubricating oil in the oil cavity 12 from leaking and save lubricating oil. At the same time, the ball 14 can also reduce the contact area between the guide shoe 6 and the guide rail 1, thereby reducing the friction between the guide shoe 6 and the guide rail 1 and thus reducing the wear of the guide shoe 6.

[0026] In this utility model, an oil filling hole is provided at the top of the oil cavity 12, and a plug 11 is provided inside the oil filling hole. By using the plug 11, it is easy to seal the oil filling hole and prevent the lubricating oil in the oil cavity 12 from leaking.

[0027] In this utility model, the extrusion component includes a sleeve 8 disposed on the bottom surface of the mounting bracket 4, a threaded sleeve 10 rotatably disposed on the bottom surface of the sleeve 8, and a short lead screw 9 threadedly connected to the threaded sleeve 10. The top of the short lead screw 9 extends into the sleeve 8, and a pressure plate 7 is rotatably disposed at the bottom of the short lead screw 9. Multiple anti-slip textures are provided on the outer wall of the threaded sleeve 10 to prevent slippage when rotating the threaded sleeve 10, thereby facilitating the rotation of the threaded sleeve 10.

[0028] In this utility model, the top surface of the threaded sleeve 10 is provided with an annular slider 15, and the bottom surface of the sleeve 8 is provided with an annular groove to match the annular slider 15. The cross-sections of the annular slider 15 and the annular groove are both T-shaped. The use of the annular slider 15 facilitates the connection between the threaded sleeve 10 and the sleeve 8.

[0029] Working principle: In use, the counterweight 3 moves in the opposite direction to the elevator car. When the counterweight 3 slides, the mounting frame 4 moves synchronously with it. When the counterweight frame 2 moves, it drives the guide shoe 6 to slide. When the guide shoe 6 slides, the ball bearings 14 rotate in the ball bearing groove, thereby applying the lubricating oil in the oil chamber 12 between the guide shoe 6 and the guide rail 1, reducing the friction between the guide shoe 6 and the guide rail 1, thus reducing the wear of the guide shoe 6 and increasing its service life.

[0030] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A manned elevator car weight balancing mechanism comprising symmetrical arrangements provided on the guide rails (1), characterized in that, The guide shoe (6) is slidably provided with a counterweight frame (2) between the guide rails (1), the counterweight frame (2) is internally provided with a counterweight block (3), the top of the counterweight frame (2) is provided with a mounting frame (4), the bottom surface of the mounting frame (4) is provided with a pressing piece for pressing the counterweight block (3), and the mounting frame (4) is rotatably provided with a guide wheel (5). The guide shoe (6) is internally provided with a lubricating piece.

2. A manned elevator car weight balancing mechanism according to claim 1, characterized in that, The lubricating piece comprises an oil cavity (12) formed in the guide shoe (6), a plurality of oil outlet holes (13) are uniformly formed in the bottom of the oil cavity (12), a ball groove is formed at the oil outlet end of the oil outlet hole (13), a ball (14) is movably clamped in the ball groove, and the ball (14) is in contact with the inner wall of the guide rail (1).

3. A manned elevator car weight balancing mechanism according to claim 2, wherein, An oil filling hole is formed in the top of the oil cavity (12), and a plug (11) is arranged in the oil filling hole.

4. A weight balancing mechanism for a manned elevator car as defined in claim 1, wherein The pressing piece comprises a sleeve (8) arranged on the bottom surface of the mounting frame (4), a threaded sleeve (10) rotatably arranged on the bottom surface of the sleeve (8), and a short lead screw (9) threadedly connected in the threaded sleeve (10), wherein the top of the short lead screw (9) extends into the sleeve (8), and the bottom of the short lead screw (9) is rotatably provided with a pressing plate (7).

5. A weight balancing mechanism for a manned elevator car according to claim 4, characterized in that An annular sliding block (15) is arranged on the top surface of the threaded sleeve (10), an annular sliding groove is formed in the bottom surface of the sleeve (8) in cooperation with the annular sliding block (15), and the cross sections of the annular sliding block (15) and the annular sliding groove are both T-shaped.

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