Anti-falling and buffering type elevator counterweight device

Abstract

The utility model discloses a kind of anti-falling buffer formula elevator counterweight devices, belong to elevator counterweight device technical field, including counterweight frame, counterweight block, counterweight steel wire rope, installation component and limiting component;Counterweight frame one end is equipped with rectangular distribution installation slot, counterweight frame two sides are equipped with round groove, counterweight frame inside two sides are symmetrically equipped with sliding slot, counterweight frame inside two ends are symmetrically equipped with guide slot;Counterweight block two sides are equipped with limiting slot, counterweight block one end is symmetrically equipped with guide hole;Counterweight steel wire rope is fixedly installed on the upper end of counterweight frame, the cooperative fixing of first positioning screw rod and second positioning screw rod, square plate position can be flexibly adjusted according to counterweight block quantity, realize the fastening of counterweight block, prevent loosening displacement, and installation and later maintenance need not integral disassembly, convenient operation, limiting component is driven limiting plate along sliding slot by threaded rod, limiting plate is embedded in the limiting slot of counterweight block to realize reliable limiting, avoid counterweight block to shake or drop during operation.

Description

Technical Field

[0001] This utility model relates to a fall-prevention buffer type elevator counterweight device, belonging to the technical field of elevator counterweight devices. Background Technology

[0002] The counterweight device in an anti-fall buffer elevator functions as a balance and buffer, offsetting most of the car's weight so that the motor only needs to drive the "remaining weight difference," significantly reducing motor load and energy consumption, and extending equipment life. When the elevator experiences "car overspeed fall" or "counterweight overshoot," the buffer absorbs the impact energy through hydraulic damping or spring deformation, preventing the counterweight from directly impacting the bottom or top of the shaft, thus reducing the risk of personal injury and equipment damage.

[0003] For example, CN114890274B discloses an elevator counterweight device for easy fixing of counterweight blocks. The device includes a first frame and a second frame, which are fixedly connected. The second frame is positioned above the first frame. A main shaft is fixedly installed between the first and second frames. A collar is sleeved on the main shaft, and several stacked counterweight blocks are fitted onto the collar. A fixing rod is fixedly installed between the first and second frames, and the counterweight blocks are fitted onto the fixing rod. Adjacent counterweight blocks are stacked and interlocked. Each counterweight block has a protrusion on its upper side and a recess on its lower side, with the protrusion and recess of adjacent counterweight blocks engaging. In use, the counterweight blocks can be easily and quickly installed or removed, significantly reducing elevator maintenance time and greatly increasing the applicability of the invention.

[0004] In the existing technology, counterweights are usually installed by stacking and then directly fastening them, which has certain shortcomings. The fixing of counterweights mostly relies on a single fastener. If it is loose, it can easily cause the counterweight to shift, which poses a safety hazard. In addition, the entire counterweight needs to be disassembled when adjusting or replacing it later, which is cumbersome. Utility Model Content

[0005] The purpose of this invention is to provide a fall-prevention buffer elevator counterweight device to solve the above problems, which can reinforce the counterweight.

[0006] This utility model achieves the above objectives through the following technical solution: a fall-prevention buffer elevator counterweight device, comprising a counterweight frame, counterweight blocks, counterweight wire ropes, installation components, and limiting components. The counterweight frame has a rectangular mounting groove at one end, circular grooves on both sides, sliding grooves symmetrically on both sides inside the counterweight frame, and guide grooves symmetrically on both ends inside the counterweight frame. Limiting grooves are provided on both sides of the counterweight, and guide holes are symmetrically provided at one end of the counterweight. The counterweight wire rope is fixedly installed on the upper end of the counterweight frame; The installation components include: A guide rod is inserted into the guide groove, one end of the guide rod extends into the guide hole, and the outer side of the guide rod is provided with a first positioning screw hole in a linear array, and the two ends of the guide rod are provided with a second positioning screw hole; A square plate is sleeved on the outside of the guide rod. A first positioning screw is rotatably installed on both sides of one end of the square plate, which matches the first positioning screw hole. One end of the first positioning screw extends into the first positioning screw hole. The second positioning screw is rotatably installed in the mounting groove, and the second positioning screw matches the second positioning screw hole; The limiting component includes: A limiting plate is slidably installed in the sliding groove, with one end of the limiting plate extending into the limiting groove; A threaded rod is rotatably installed in the circular groove, and one end of the threaded rod is threadedly connected to the limiting plate.

[0007] Preferably, buffers are fixedly installed on both sides of the lower end of the counterweight frame to cushion the counterweight frame.

[0008] Preferably, guide plates are symmetrically installed on both sides of the counterweight frame to ensure smooth movement of the counterweight frame.

[0009] Preferably, in order to make the counterweight move smoothly, the size of the guide rod matches the size of the guide hole.

[0010] Preferably, in order to facilitate the rotation of the second positioning screw, a first handwheel is fixedly installed at one end of the second positioning screw.

[0011] Preferably, a second handwheel is fixedly installed at one end of the threaded rod to facilitate rotation of the threaded rod.

[0012] Preferably, in order to make the limiting plate move smoothly, round rods are fixedly installed at both ends inside the sliding groove, and one end of the round rods is inserted into one side of the limiting plate.

[0013] Preferably, in order to limit the movement of the counterweight wire rope, a square wire frame is sleeved on the outside of the counterweight wire rope.

[0014] The beneficial effects of this utility model are: the coordinated fixing of the first positioning screw and the second positioning screw can flexibly adjust the position of the square plate according to the number of counterweights, thereby achieving the fastening of the counterweights and preventing loosening and displacement. Moreover, there is no need for overall disassembly during installation and subsequent maintenance, making operation convenient. The limiting component drives the limiting plate to slide along the sliding groove through the threaded rod. The limiting plate is embedded in the limiting groove of the counterweight to achieve reliable limiting and prevent the counterweight from shaking or falling off during operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the counterweight frame connection structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the circular rod connection structure of this utility model.

[0018] Figure 4 This is a schematic diagram of the counterweight installation or disassembly structure of this utility model.

[0019] Figure 5 This is a schematic diagram of the installation component structure of this utility model.

[0020] Figure 6 This is a schematic diagram of the limiting component structure of this utility model.

[0021] In the diagram: 1. Counterweight frame; 2. Counterweight block; 3. Counterweight wire rope; 4. Mounting assembly; 401. Guide rod; 402. First positioning screw hole; 403. Second positioning screw hole; 404. Square plate; 405. First positioning screw; 5. Limiting assembly; 501. Limiting plate; 502. Threaded rod; 6. Mounting groove; 7. Circular groove; 8. Sliding groove; 9. Guide groove; 10. Limiting groove; 11. Guide hole; 12. Buffer; 13. Guide plate; 14. First handwheel; 15. Circular rod; 16. Square wire frame. 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] Please see Figures 1-6 As shown, a fall-prevention buffer type elevator counterweight device includes a counterweight frame 1, a counterweight block 2, a counterweight wire rope 3, an installation component 4, and a limiting component 5. The counterweight frame 1 has a rectangular mounting groove 6 at one end, circular grooves 7 on both sides of the counterweight frame 1, sliding grooves 8 symmetrically opened on both sides inside the counterweight frame 1, guide grooves 9 symmetrically opened at both ends inside the counterweight frame 1, buffers 12 are fixedly installed on both sides of the lower end of the counterweight frame 1, and guide plates 13 are symmetrically installed on both sides of the counterweight frame 1. Limiting grooves 10 are provided on both sides of the weight 2, and guide holes 11 are symmetrically provided at one end of the weight 2. The counterweight wire rope 3 is fixedly installed on the upper end of the counterweight frame 1, and a square wire frame 16 is sleeved on the outside of the counterweight wire rope 3; like Figure 5 As shown, installation component 4 includes: The guide rod 401 is inserted into the guide groove 9. One end of the guide rod 401 extends into the guide hole 11. The outer side of the guide rod 401 is provided with a first positioning screw hole 402 in a linear array. The two ends of the guide rod 401 are provided with a second positioning screw hole 403. The size of the guide rod 401 matches the size of the guide hole 11. A square plate 404 is sleeved on the outside of the guide rod 401. A first positioning screw 405 matching the first positioning screw hole 402 is rotatably installed on both sides of one end of the square plate 404. One end of the first positioning screw 405 extends into the first positioning screw hole 402. The second positioning screw is rotatably installed in the mounting groove 6, and the second positioning screw matches the second positioning screw hole 403. A first handwheel 14 is fixedly installed at one end of the second positioning screw. In use, first insert the guide rod 401 along the guide groove 9 inside the counterweight frame 1. At this time, there is a certain gap between the upper end of the guide rod 401 and the counterweight frame 1, facilitating the insertion of the counterweight block 2. Then, insert the counterweight block 2 onto the outside of the guide rod 401. At this time, the guide rod 401 extends into the guide hole 11 of the counterweight block 2, constraining the lateral and longitudinal offset of the counterweight block 2 and preventing... To prevent the counterweight 2 from tilting or misaligning due to accumulated errors and to ensure that the counterweight frame 1 is subjected to uniform force, after the counterweight 2 is stacked according to the rated load requirements, the square plate 404 is placed on the outside of the guide rod 401 and slid to the top of the counterweight 2. Then, the guide rod 401 is manually moved upward so that its upper end moves into the upper guide groove 9 and its lower end moves into the lower guide groove 9. Then, by rotating the first handwheel 14, the second positioning screw is driven to screw into the second positioning screw holes 403 at both ends of the guide rod 401, and the guide rod 401 is fixed inside the counterweight frame 1. At this time, rotate the first positioning screws 405 at both ends of the square plate 404 so that they are screwed into the first positioning screw holes 402 at the corresponding height on the guide rod 401. Through the thread engagement between the first positioning screws 405 and the first positioning screw holes 402, the square plate 404 is firmly fixed on the guide rod 401, thereby pressing and fixing the counterweight 2 to prevent intermittent shaking between the counterweights 2 during elevator operation and reducing vibration noise from the source.

[0024] like Figure 6 As shown, the limiting component 5 includes: The limiting plate 501 is slidably installed in the sliding groove 8, with one end of the limiting plate 501 extending into the limiting groove 10; A threaded rod 502 is rotatably installed in a circular groove 7. One end of the threaded rod 502 is threadedly connected to a limiting plate 501. A second handwheel is fixedly installed at one end of the threaded rod 502. Two circular rods 15 are fixedly installed inside the sliding groove 8. One end of the circular rod 15 is inserted into one side of the limiting plate 501. When in use, the second handwheel is manually turned, and the threaded rod 502 in the circular grooves 7 on both sides of the counterweight frame 1 rotates accordingly. Since the threaded rod 502 is threadedly connected to the limiting plate 501, the rotational motion of the threaded rod 502 can be converted into the horizontal linear motion of the limiting plate 501. Its end gradually embeds into the limiting groove 10 of the counterweight block 2 until it is tightly fitted with the inner wall of the limiting groove 10. At this time, the limiting plate 501 forms a "clamping" constraint from both sides of the counterweight 2, directly restricting the lateral displacement of the counterweight 2; one end of the round rod 15 inside the sliding groove 8 is inserted into one side of the limiting plate 501, providing additional guiding support for the limiting plate 501, preventing it from tilting or jamming when under force, and ensuring that the locking force of the limiting plates 501 on both sides is uniform. The threaded rod 502 adopts a triangular thread design, and its thread helix angle is smaller than the friction angle, which has a natural self-locking function. Under the condition of no external force driving, the threaded rod 502 will not rotate due to the vibration of the elevator operation or the lateral force of the counterweight 2, ensuring that the limiting plate 501 always remains in a locked state, and structurally avoiding the risk of limiting failure.

[0025] Working principle: First, the counterweight 2 is installed inside the counterweight frame 1 using the installation component 4, ensuring that the counterweight 2 is not offset or loose within the counterweight frame 1. The limiting component 5 achieves precise lateral locking of the counterweight 2 through threaded transmission. Combined with the guide structure, this ensures that the counterweight 2 does not move left or right during operation. The guide plates 13, symmetrically installed on both sides of the counterweight frame 1, fit tightly against the counterweight guide rails in the elevator shaft, forming a sliding guide pair. During elevator operation, the guide plates 13 slide along the guide rail surface, directly constraining the lateral swing and rotational tendency of the counterweight frame 1, ensuring that the counterweight frame 1 always moves along the vertical direction, avoiding collisions with the shaft wall or car. The counterweight wire rope 3, as the core component connecting the counterweight frame 1 and the traction system, has a square wire frame 16 on its outer side that acts as a "regulation and constraint". The square wire frame 16 uses a rigid structure to keep the multiple counterweight wire ropes 3 together and in a limited position, preventing the counterweight wire ropes 3 from swinging disorderly due to centrifugal force or airflow disturbance during high-speed elevator operation, and reducing frictional losses between the counterweight wire ropes 3 and the top of the counterweight frame 1 and the traction sheave. The buffers 12 on both sides of the lower end of the counterweight frame 1 are the core actuators for fall protection. When the counterweight frame 1 falls rapidly or hits the top due to abnormal conditions, the buffers 12 will first contact the buffer seat at the bottom of the shaft to absorb the impact energy.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fall-prevention buffer type elevator counterweight device, characterized in that: It includes a counterweight frame (1), a counterweight block (2), a counterweight wire rope (3), an installation assembly (4), and a limit assembly (5); The counterweight frame (1) has a rectangular mounting groove (6) at one end, circular grooves (7) on both sides, sliding grooves (8) symmetrically opened on both sides inside the counterweight frame (1), and guide grooves (9) symmetrically opened at both ends inside the counterweight frame (1). Limiting grooves (10) are provided on both sides of the counterweight (2), and guide holes (11) are symmetrically provided at one end of the counterweight (2). The counterweight wire rope (3) is fixedly installed on the upper end of the counterweight frame (1); The installation component (4) includes: A guide rod (401) is inserted into the guide groove (9). One end of the guide rod (401) extends into the guide hole (11). The outer side of the guide rod (401) is provided with a first positioning screw hole (402) in a linear array. The two ends of the guide rod (401) are provided with a second positioning screw hole (403). A square plate (404) is sleeved on the outside of the guide rod (401). A first positioning screw (405) matching the first positioning screw hole (402) is rotatably installed on both sides of one end of the square plate (404). One end of the first positioning screw (405) extends into the first positioning screw hole (402). The second positioning screw is rotatably installed in the mounting groove (6), and the second positioning screw matches the second positioning screw hole (403); The limiting component (5) includes: A limiting plate (501) is slidably installed in the sliding groove (8), with one end of the limiting plate (501) extending into the limiting groove (10); A threaded rod (502) is rotatably installed in the circular groove (7), and one end of the threaded rod (502) is threadedly connected to the limiting plate (501).

2. The anti-fall buffer type elevator counterweight device according to claim 1, characterized in that: Buffers (12) are fixedly installed on both sides of the lower end of the counterweight frame (1).

3. The anti-fall buffer type elevator counterweight device according to claim 1, characterized in that: Guide plates (13) are symmetrically installed on both sides of the counterweight frame (1).

4. The anti-fall buffer type elevator counterweight device according to claim 1, characterized in that: The dimensions of the guide rod (401) match the dimensions of the guide hole (11).

5. The anti-fall buffer type elevator counterweight device according to claim 1, characterized in that: The first handwheel (14) is fixedly installed at one end of the second positioning screw.

6. The anti-fall buffer type elevator counterweight device according to claim 1, characterized in that: A second handwheel is fixedly installed at one end of the threaded rod (502).

7. The anti-fall buffer type elevator counterweight device according to claim 1, characterized in that: A round rod (15) is fixedly installed at both ends inside the sliding groove (8), and one end of the round rod (15) is inserted into one side of the limiting plate (501).

8. The anti-fall buffer type elevator counterweight device according to claim 1, characterized in that: A square wire frame (16) is attached to the outside of the counterweight wire rope (3).

Images