Elevator car balance weight device

Abstract

The utility model discloses an elevator car balance weight device which comprises a rectangular balance weight frame and stacked balance weight blocks, a carrying column is rotationally installed at the bottom of the inner side of the rectangular balance weight frame, two threaded columns are symmetrically and fixedly installed on the surface of the carrying column, and the stacked balance weight blocks are connected between the two threaded columns in a sleeved mode. A detachable pressing plate is installed between the upper portions of the two threaded columns, the pressing plate is located on the upper portions of the stacked balance weight blocks to be fixed, an adjustable retracting and releasing structure is installed in the middle of the top of the inner side of the rectangular balance weight frame, and an inhaul cable used for pulling is connected between the surface of the retracting and releasing structure and the middle of the top of the pressing plate; the elevator car balance weight device is provided with a rotatable adjusting structure, the balancing weight can be rotated and moved, the balancing weight can be conveniently detached and replaced, and therefore the convenience and safety of overhaul and replacement are improved.

Description

Technical Field

[0001] This utility model belongs to the field of elevator technology, specifically an elevator car balancing counterweight device. Background Technology

[0002] The elevator car counterweight is a crucial component of the elevator system, primarily used to improve elevator operating efficiency and safety. The counterweight is typically equal to or slightly lighter than the car's weight, balancing the car's weight during elevator operation and reducing the motor's load. This means that during ascent or descent, the counterweight helps counteract the car's gravity, thereby reducing energy consumption. However, the connection and fixing between elevator counterweight modules usually uses clamps or brackets. Using clamps or brackets to connect the counterweights requires complete disassembly for maintenance, replacement, or addition / removal of the counterweights. This complete disassembly increases the risk and inconvenience of operation. Therefore, improvements are needed to address these issues. Utility Model Content

[0003] To achieve the above objectives, this utility model provides the following technical solution: an elevator car balancing counterweight device, comprising a rectangular counterweight frame and stacked balancing counterweight blocks, wherein a support column is rotatably installed on the bottom inner side of the rectangular counterweight frame, and two threaded columns are symmetrically fixedly installed on the surface of the support column, the stacked balancing counterweight blocks are sleeved between the two threaded columns, and a detachable pressure plate is installed between the upper parts of the two threaded columns. The pressure plate is located on the upper part of the stacked balancing counterweight blocks for fixation, and an adjustable retractable structure is installed in the middle of the top of the inner side of the rectangular counterweight frame, and a pull cable for pulling is connected between the surface of the retractable structure and the middle of the top of the pressure plate.

[0004] Preferably, the surface of the counterweight has two symmetrical through holes A, and the inside of each through hole A is fitted with a rubber sleeve to protect the threaded post from wear, so that the counterweight can be installed effectively.

[0005] Preferably, the pressure plate has two symmetrically formed perforations B on its surface, and two bearings are installed on the top of the pressure plate. The two bearings are respectively aligned with the two perforations B. The interior of each bearing is equipped with an internally threaded tube, and the two threaded posts are respectively threadedly connected to the two internally threaded tubes, so that the pressure plate can be effectively installed between the two threaded posts.

[0006] Preferably, adjusting wheels are fixedly installed on the upper part of the two internally threaded tube surfaces, sprockets are fixedly installed on the middle part of the two internally threaded tube surfaces, and a chain is installed between the two sprockets, so as to effectively adjust and disassemble the pressure plate.

[0007] Preferably, the retractable structure includes a convex inner groove formed in the top center of the inner side of the rectangular counterweight frame. Two forward and reverse rotating stepper motors are symmetrically installed on both sides of the lower part of the convex inner groove. A winding wheel is fixedly connected between the output ends of the two forward and reverse rotating stepper motors. The end of the cable away from the pressure plate is fixed and wound around the surface of the winding wheel, thereby enabling effective adjustment of the support column and disassembly and assembly of the counterweight block.

[0008] Preferably, a limiting baffle is fixedly installed on the surface of the support column, and a limiting groove is provided at one end of the bottom inner side of the rectangular counterweight frame to block the limiting baffle, thereby effectively limiting the rotating support column, so that the support column drives the counterweight block to rotate 90 degrees through two threaded columns to be suspended in the air, which facilitates the disassembly and assembly of the counterweight block.

[0009] Preferably, the surface of the support column is provided with a horizontal plane so that the counterweights can be stacked effectively and stably.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting up a rectangular counterweight frame, a support column, a threaded column, a counterweight block, a pressure plate, a retractable structure, and a cable, this elevator car counterweight device has a rotatable and adjustable structure, which allows the counterweight block to be rotated and moved and to be easily disassembled and replaced, thereby improving the convenience and safety of maintenance and replacement. At the same time, this elevator car counterweight device has a simple structural design, is easy to operate, and is safe, stable, and reliable in adjustment. Its performance can meet the usage requirements of elevator car counterweight. Attached Figure Description

[0011] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0012] In the attached diagram:

[0013] Figure 1 This is a schematic diagram of the elevator car balancing counterweight device of this utility model;

[0014] Figure 2 This utility model Figure 1 Schematic diagram of partial cross-section structure Figure 1 ;

[0015] Figure 3 This utility model Figure 1 Schematic diagram of partial cross-section structure Figure 2 ;

[0016] Figure 4 This is a top view of the counterweight block of this utility model.

[0017] In the diagram: 1. Rectangular counterweight frame; 2. Support column; 3. Threaded column; 4. Balance counterweight; 5. Pressure plate; 6. Retracting structure; 7. Cable; 8. Perforation A; 9. Rubber sleeve; 10. Perforation B; 11. Bearing; 12. Internally threaded tube; 13. Adjusting wheel; 14. Sprocket; 15. Chain; 16. Convex inner groove; 17. Forward and reverse rotating stepper motor; 18. Retracting wheel; 19. Limiting baffle; 20. Limiting groove. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0019] Depend on Figures 1 to 4 The present invention includes a rectangular counterweight frame 1 and stacked counterweight blocks 4. A support column 2 is rotatably mounted on the bottom inner side of the rectangular counterweight frame 1. Two threaded columns 3 are symmetrically fixedly mounted on the surface of the support column 2. The stacked counterweight blocks 4 are sleeved between the two threaded columns 3. The rotatable support column 2 can drive the two threaded columns 3 and the stacked counterweight blocks 4 to rotate and adjust. The surface of the support column 2 has a horizontal surface so that the counterweight blocks 4 can be stacked effectively and stably. The surface of the counterweight blocks 4 has two symmetrical through holes A8. The inside of each through hole A8 is fitted with a rubber sleeve 9 to protect the threaded columns 3 from wear, so that the counterweight blocks 4 can be installed effectively.

[0020] A detachable pressure plate 5 is installed between the upper parts of the two threaded columns 3. The pressure plate 5 is fixed on the top of the stacked counterweights 4. An adjustable retraction structure 6 is installed in the middle of the top of the inner side of the rectangular counterweight frame 1. A pull cable 7 is connected between the surface of the retraction structure 6 and the middle of the top of the pressure plate 5. Through the setting of the retraction structure 6 and the pull cable 7, the support column 2 can be rotated and adjusted.

[0021] This elevator car counterweight device features a rotatable and adjustable structure, allowing for the rotation and movement of the counterweight blocks and convenient disassembly and replacement. This improves the convenience and safety of maintenance and replacement. Furthermore, the device boasts a simple design, easy and convenient operation, and safe and reliable adjustment, meeting the performance requirements for elevator car counterweight use.

[0022] Two through holes B10 are symmetrically opened on the surface of the pressure plate 5. Two bearings 11 are installed on the top of the pressure plate 5. The two bearings 11 are aligned with the two through holes B10 respectively. The interior of each of the two bearings 11 is equipped with an internal threaded tube 12. Two threaded posts 3 are threadedly connected to the two internal threaded tubes 12 respectively, so that the pressure plate 5 can be effectively installed between the two threaded posts 3. Adjusting wheels 13 are fixedly installed on the upper part of the surface of each of the two internal threaded tubes 12. Sprockets 14 are fixedly installed on the middle part of the surface of each of the two internal threaded tubes 12. A chain 15 is installed between the two sprockets 14, so that the pressure plate 5 can be effectively adjusted and disassembled.

[0023] As shown in the attached figure, when it is necessary to disassemble the pressure plate 5, one of the internal threaded tubes 12 is rotated by rotating any one of the adjusting wheels 13. The rotation of one internal threaded tube 12 will drive the other internal threaded tube 12 to rotate synchronously through the two sprockets 14 and the chain 15. The rotation of the two internal threaded tubes 12 will move upward on the surface of the two threaded posts 3, and finally the two internal threaded tubes 12 will separate from the two threaded posts 3, so that the pressure plate 5 can be disassembled.

[0024] The retractable structure 6 includes a convex inner groove 16 located in the middle of the top of the inner side of the rectangular counterweight frame 1. Two forward and reverse rotating stepper motors 17 are symmetrically installed on both sides of the lower part of the convex inner groove 16. A winding wheel 18 is fixedly connected between the output ends of the two forward and reverse rotating stepper motors 17. The end of the cable 7 away from the pressure plate 5 is fixed and wound around the surface of the winding wheel 18, thereby effectively adjusting the support column 2 and disassembling and assembling the counterweight block 4.

[0025] As shown in the attached diagram, when it is necessary to add or remove the counterweight 4, firstly, start the two forward and reverse rotating stepper motors 17 to drive the winding wheel 18 to rotate. The rotation of the winding wheel 18 will unwind the cable 7, causing the unwound cable 7 to loosen. Then, the stacked counterweight 4 will tilt through the two threaded posts 3, causing the support column 2 to rotate. Finally, as the cable 7 continues to unwind, the support column 2 will rotate 90 degrees. Then, the pressure plate 5 will be removed from the two threaded posts 3 to add or remove the counterweight 4. After the operation is completed, the pressure plate 5 will be installed on the two threaded posts 3 again. Then, the winding wheel 18 will rewind the cable 7 to pull the pressure plate 5, causing the support column 2 to reverse 90 degrees, so that the stacked counterweight 4 will be adjusted to the inside of the rectangular counterweight frame 1 again.

[0026] A limiting baffle 19 is fixedly installed on the surface of the support column 2. A limiting groove 20 is provided at one end of the bottom inner side of the rectangular counterweight frame 1 to block the limiting baffle 19, thereby effectively limiting the rotation of the support column 2. This allows the support column 2 to drive the counterweight block 4, which rotates 90 degrees, to be suspended in the air through the two threaded columns 3, making it convenient to disassemble and assemble the counterweight block 4.

[0027] When the support column 2 drives the counterweight 4 to rotate 90 degrees through the two threaded columns 3, the limiting baffle 19 will rotate into the limiting groove 20 to limit the support column 2. At this time, the counterweight 4, which has rotated 90 degrees, is suspended in the air, making it convenient to disassemble and assemble it.

[0028] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. An elevator car balancing counterweight device, comprising a rectangular counterweight frame (1) and stacked counterweight blocks (4), characterized in that: The bottom of the inner side of the rectangular counterweight frame (1) is rotatably mounted with a support column (2). Two threaded columns (3) are symmetrically fixedly mounted on the surface of the support column (2). The stacked balance weight (4) is sleeved between the two threaded columns (3). A detachable pressure plate (5) is installed between the upper parts of the two threaded columns (3). The pressure plate (5) is located on the upper part of the stacked balance weight (4) and fixed thereon. An adjustable retraction structure (6) is installed in the middle of the top of the inner side of the rectangular counterweight frame (1). A pull cable (7) for pulling is connected between the surface of the retraction structure (6) and the middle of the top of the pressure plate (5).

2. The elevator car counterweight device according to claim 1, characterized in that: The surface of the counterweight (4) has two symmetrical perforations A (8), and the inside of each perforation A (8) is fitted with a rubber sleeve (9) to protect the threaded column (3) from wear.

3. The elevator car counterweight device according to claim 1, characterized in that: The pressure plate (5) has two symmetrical perforations B (10) on its surface. Two bearings (11) are installed on the top of the pressure plate (5). The two bearings (11) are aligned with the two perforations B (10) respectively. The two bearings (11) are each equipped with an internal threaded tube (12). The two threaded columns (3) are threadedly connected to the two internal threaded tubes (12) respectively.

4. The elevator car counterweight device according to claim 3, characterized in that: Adjusting wheels (13) are fixedly installed on the upper part of the surfaces of the two internally threaded tubes (12), sprockets (14) are fixedly installed on the middle part of the surfaces of the two internally threaded tubes (12), and a chain (15) is installed between the two sprockets (14).

5. The elevator car counterweight device according to claim 1, characterized in that: The take-up and release structure (6) includes a convex inner groove (16) opened in the middle of the top of the inner side of the rectangular counterweight frame (1). Two forward and reverse rotating stepper motors (17) are symmetrically installed on both sides of the lower part of the convex inner groove (16). A take-up wheel (18) is fixedly connected between the output ends of the two forward and reverse rotating stepper motors (17). The end of the cable (7) away from the pressure plate (5) is fixed and wound around the surface of the take-up wheel (18).

6. The elevator car counterweight device according to claim 1, characterized in that: A limiting baffle (19) is fixedly installed on the surface of the support column (2), and a limiting groove (20) is provided at one end of the bottom of the inner side of the rectangular counterweight frame (1) to block the limiting baffle (19).

7. The elevator car counterweight device according to claim 1, characterized in that: The surface of the support column (2) is provided with a horizontal plane so that the counterweights (4) can be stacked effectively and stably.

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