Self-balancing mechanism for an elevator

Abstract

The utility model discloses a self -balancing mechanism of elevator, including counterweight frame, the inside of counterweight frame is stacked with a plurality of counterweight blocks, the top fixedly connected with two L type spare of counterweight frame, and the outer wall of two L type spare all is fixedly connected with counterweight guide shoe, and the inner wall of two counterweight guide shoes all is connected with T type counterweight guide rail of sliding, and the top of two L type spare all is fixedly connected with oil box, and the top of two oil boxes all is hinged with box cover. The utility model discloses through the adsorption lock oil capacity and capillary penetration effect of U type oil guide cotton, can continuously, evenly for lubricating oil provide supply, ensure that the guide rail maintains stable lubrication state all the time when elevator operation, avoid counterweight guide shoe and guide rail to fall into the disadvantageous working condition of boundary lubrication or dry friction, through the brush even coating lubricating oil on the guide rail surface and form stable oil film, can reduce the friction coefficient between counterweight guide shoe and T type counterweight guide rail greatly, reduces the wear and tear of part.

Description

Technical Field

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

[0002] In elevator systems, the self-balancing mechanism (also known as the counterweight system) is a core design element ensuring high efficiency, energy saving, and smooth operation. This mechanism typically consists of the elevator car, the counterweight, the steel cables connecting them, and the traction machine that drives the steel cables. Its basic principle is that by configuring the counterweight, its weight is balanced with the car's own weight plus a portion of the rated load (usually 40% to 50%). This design allows the traction machine to primarily overcome the inertial forces generated by system friction and acceleration, rather than the entire weight of the car and load, thus significantly reducing energy consumption, decreasing motor load, and improving operating efficiency.

[0003] In existing technologies, self-balancing mechanisms operate in the hoistway for extended periods, requiring maintenance personnel to periodically apply lubricating oil to the guide rails manually or drip oil using a simple oil cup. This method is not only inefficient but also rapidly degrades as the elevator runs, failing to maintain a continuous lubrication state along the entire guide rail. Consequently, the counterweight guide shoe and the guide rail are in a state of boundary lubrication or even dry friction for most of the time. Therefore, we propose a self-balancing mechanism for elevators to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a self-balancing mechanism for elevators.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A self-balancing mechanism for an elevator includes a counterweight frame. Multiple counterweight blocks are stacked inside the counterweight frame. Two L-shaped members are fixedly connected to the top of the counterweight frame. Counterweight guide shoes are fixedly connected to the outer walls of both L-shaped members. T-shaped counterweight guide rails are slidably connected to the inner walls of both counterweight guide shoes. Oil boxes are fixedly connected to the top of both L-shaped members. A cover is hinged to the top of each oil box. T-shaped plates are fixedly embedded inside each oil box. U-shaped oil-guiding cotton is fixedly connected to the outer walls of both T-shaped plates. Two oil-guiding cotton sheets are fixedly connected to the outer walls of both T-shaped plates. One end of each oil-guiding cotton sheet is fixedly connected to the outer wall of the U-shaped oil-guiding cotton. An oil brushing assembly is provided on the outer wall of the oil box.

[0006] Preferably, the oiling assembly includes four side plates, which are fixedly connected to the outer walls of two oil boxes in pairs. The two ends of the U-shaped oil-guiding cotton are fixedly connected to the outer walls of the two side plates respectively. Multiple brushes are evenly fixedly connected to the outer walls of the two U-shaped oil-guiding cottons. The multiple brushes can evenly apply the permeated lubricating oil to the surface of the T-shaped counterweight guide rail.

[0007] Preferably, a counterweight plate is fixedly connected inside the counterweight frame, and the bottom of the counterweight plate contacts the top of one of the counterweight blocks. The counterweight plate can apply a stable clamping force to the stacked counterweight blocks.

[0008] Preferably, an I-shaped shaft is fixedly embedded in the outer wall of the counterweight frame, and a counter-rope wheel is rotatably sleeved on the outer wall of the I-shaped shaft. The counter-rope wheel drives the counterweight device and the car to move in opposite directions through the friction between the counterweight and the wire rope.

[0009] Preferably, both the lid and the outer wall of the oil box are fixedly embedded with circular magnets, and the two circular magnets are magnetically connected to each other, so as to achieve quick fixation of the lid and the oil box by means of magnetic connection.

[0010] Preferably, the outer wall of the T-shaped plate has two strip holes, and the inner walls of the two strip holes are respectively fixedly connected to the outer walls of the two oil-guiding cotton pads.

[0011] Compared with the prior art, the advantages of this utility model are: This solution utilizes the oil-absorbing and locking capabilities of U-shaped oil-guiding cotton, along with capillary penetration, to continuously and evenly supply lubricating oil. This ensures the guide rails maintain stable lubrication throughout elevator operation, preventing unfavorable conditions such as boundary lubrication or dry friction between the counterweight guide shoe and the guide rail. A brush evenly applies lubricating oil to the guide rail surface, forming a stable oil film that significantly reduces the coefficient of friction between the counterweight guide shoe and the T-shaped counterweight guide rail, minimizing component wear. The circular magnetic cover design allows maintenance personnel to easily and quickly add oil by simply lifting the cover. This eliminates the need for frequent manual application of lubricating oil, significantly reducing maintenance frequency and workload, and improving maintenance efficiency. Attached Figure Description

[0012] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a three-dimensional structural diagram of a self-balancing mechanism for an elevator proposed in this utility model. Figure 2 This is a cross-sectional structural diagram of a self-balancing mechanism for an elevator proposed in this utility model. Figure 3 This utility model proposes a self-balancing mechanism for an elevator. Figure 2 A magnified structural diagram of part A in the diagram; Figure 4This is a partial three-dimensional structural diagram of a self-balancing mechanism for an elevator proposed in this utility model.

[0014] In the diagram: 1. Counterweight frame; 2. Counterweight block; 3. Counterweight pressure plate; 4. I-shaped shaft; 5. Reverse rope pulley; 6. L-shaped part; 7. Counterweight guide shoe; 8. Oil box; 9. Box cover; 10. Circular magnet; 11. T-shaped plate; 12. Oil-guiding cotton sheet; 13. U-shaped oil-guiding cotton; 14. Side plate; 15. Brush. Detailed Implementation

[0015] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0016] Depend on Figures 1-4 As shown, a self-balancing mechanism for an elevator is disclosed, comprising a counterweight frame 1, with multiple counterweight blocks 2 stacked inside the counterweight frame 1. The counterweight frame 1 provides stable installation space and structural support for the stacked counterweight blocks 2. The multiple counterweight blocks 2 are stacked and combined to form an adjustable counterweight unit. A counterweight pressure plate 3 is fixedly connected inside the counterweight frame 1. The bottom of the counterweight pressure plate 3 contacts the top of one of the counterweight blocks 2. The counterweight pressure plate 3 can apply a stable clamping force to the stacked counterweight blocks 2 to prevent the counterweight blocks 2 from shifting or loosening due to vibration during elevator operation. An I-shaped shaft 4 is fixedly embedded in the outer wall of the counterweight frame 1. A counter-rotating sheave 5 is rotatably sleeved on the outer wall of the I-shaped shaft 4. The counter-rotating sheave 5 drives the counterweight device to move in the opposite direction to the car through friction with the wire rope. Its rotation process directly realizes the lifting and lowering drive of the elevator.

[0017] Two L-shaped pieces 6 are fixedly connected to the top of the counterweight frame 1. Counterweight guide shoes 7 are fixedly connected to the outer walls of the two L-shaped pieces 6. T-shaped counterweight guide rails are slidably connected to the inner walls of the two counterweight guide shoes 7. The counterweight guide shoes 7 and the T-shaped counterweight guide rails play a guiding and limiting role, preventing the counterweight frame 1 from tilting or swaying during vertical movement.

[0018] Oil boxes 8 are fixedly connected to the top of both L-shaped parts 6. A cover 9 is hinged to the top of both oil boxes 8. The hinge is achieved by existing hinge pieces. Circular magnets 10 are fixedly embedded in the outer wall of both the cover 9 and the oil box 8. The two circular magnets 10 are magnetically connected. The cover 9 achieves the opening and closing function by engaging with the oil box 8 through the hinge. When closed, it can seal the opening of the oil box 8, reducing the evaporation of lubricating oil and the entry of impurities. The magnetic connection enables the cover 9 and the oil box 8 to be quickly fixed. When opened, it is convenient for maintenance personnel to inject lubricating oil.

[0019] T-shaped plates 11 are fixedly embedded inside both oil boxes 8. U-shaped oil-guiding cotton 13 is fixedly connected to the outer wall of both T-shaped plates 11. Two oil-guiding cotton pieces 12 are fixedly connected to the outer wall of both T-shaped plates 11. The oil-guiding cotton pieces 12 achieve secondary conduction and distribution of lubricating oil through connection with the U-shaped oil-guiding cotton 13. Two strip holes are opened on the outer wall of the T-shaped plates 11. The inner wall of the two strip holes is fixedly connected to the outer wall of the two oil-guiding cotton pieces 12 respectively. One end of each of the two oil-guiding cotton pieces 12 is fixedly connected to the outer wall of the U-shaped oil-guiding cotton 13.

[0020] The outer wall of the oil box 8 is equipped with an oil brushing assembly, which includes four side plates 14. The four side plates 14 are located in pairs on both sides of the two T-shaped docking guide rails. The four side plates 14 are fixedly connected to the outer walls of the two oil boxes 8 in pairs. The two ends of the U-shaped oil-guiding cotton 13 are fixedly connected to the outer walls of the two side plates 14 respectively. Multiple brushes 15 are evenly fixedly connected to the outer walls of the two U-shaped oil-guiding cotton 13. The multiple brushes 15 can evenly apply the permeated lubricating oil to the surface of the T-shaped counterweight guide rail to form a thin and uniform oil film. The multiple brushes 15 can be made of nylon material.

[0021] Working principle: During use, maintenance personnel can lift the cover 9, which is magnetically fixed by a circular magnet 10, and inject elevator guide rail lubricating oil into the oil box 8. The injected lubricating oil is first absorbed and stored by the U-shaped oil-guiding cotton 13 inside the oil box 8, which has a strong adsorption and oil-locking capacity. Through capillary action, the lubricating oil stored in the U-shaped oil-guiding cotton 13 will slowly and evenly permeate outward. Part of the lubricating oil is directly transferred to the multiple brushes 15 fixedly connected to the outer wall of the U-shaped oil-guiding cotton 13; the other part is transferred through the T-shaped plate. The oil-guiding cotton pad 12 on 11 performs secondary conduction and distribution, ensuring that the lubricating oil can cover the entire adsorbent more extensively. When the elevator is running, the counterweight device moves vertically along the car on the T-shaped counterweight guide rail. The brush 15, which is fixedly connected to the outside of the oil box 8, slides across the guide rail surface and applies the lubricating oil it carries to the T-shaped counterweight guide rail, forming a thin and uniform lubricating oil film. This effectively reduces the coefficient of friction between the counterweight guide shoe 7 and the T-shaped counterweight guide rail, reduces component wear, and suppresses operating noise and vibration.

[0022] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A self-balancing mechanism for an elevator, comprising a counterweight frame (1), characterized in that, The counterweight frame (1) has multiple counterweight blocks (2) stacked inside. The top of the counterweight frame (1) is fixedly connected to two L-shaped parts (6). The outer walls of the two L-shaped parts (6) are fixedly connected to counterweight guide shoes (7). The inner walls of the two counterweight guide shoes (7) are slidably connected to T-shaped counterweight guide rails. The tops of the two L-shaped parts (6) are fixedly connected to oil boxes (8). The tops of the two oil boxes (8) are hinged to box covers (9). The interiors of the two oil boxes (8) are fixedly inlaid with T-shaped plates (11). The outer walls of the two T-shaped plates (11) are fixedly connected to U-shaped oil-guiding cotton (13). The outer walls of the two T-shaped plates (11) are fixedly connected to two oil-guiding cotton pieces (12). One end of the two oil-guiding cotton pieces (12) is fixedly connected to the outer wall of the U-shaped oil-guiding cotton (13). The outer wall of the oil box (8) is provided with an oil brushing assembly.

2. The self-balancing mechanism of an elevator according to claim 1, characterized in that, The oil brushing assembly includes four side plates (14), which are fixedly connected to the outer walls of two oil boxes (8) in pairs. The two ends of the U-shaped oil-guiding cotton (13) are fixedly connected to the outer walls of the two side plates (14), and multiple brushes (15) are evenly fixedly connected to the outer walls of the two U-shaped oil-guiding cotton (13).

3. The self-balancing mechanism of an elevator according to claim 1, characterized in that, The counterweight frame (1) is internally fixedly connected to a counterweight plate (3), the bottom of which is in contact with the top of one of the counterweight blocks (2).

4. The self-balancing mechanism of an elevator according to claim 1, characterized in that, The outer wall of the counterweight frame (1) is fixedly inlaid with an I-shaped shaft (4), and the outer wall of the I-shaped shaft (4) is rotatably fitted with a reverse rope wheel (5).

5. The self-balancing mechanism of an elevator according to claim 1, characterized in that, Both the outer walls of the lid (9) and the oil box (8) are fixedly inlaid with circular magnets (10), and the two circular magnets (10) are magnetically connected.

6. The self-balancing mechanism of an elevator according to claim 1, characterized in that, The outer wall of the T-shaped plate (11) has two strip holes, and the inner walls of the two strip holes are fixedly connected to the outer walls of the two oil-guiding cotton sheets (12).

Images