Screw electric cylinder elevator

Abstract

The utility model belongs to the technical field of elevators, and particularly relates to a screw electric cylinder elevator, which comprises a car, an elevator shaft and a decorative protective cover, the decorative protective cover is mounted on one side of the elevator shaft, and the car is arranged in the decorative protective cover, and is characterized in that a reinforcing frame for improving the structural strength of the top of the car is welded on the surface of the top of the car; the middle of the reinforcing frame extends out of the lift car, a screw electric cylinder is installed in an inner cavity of the elevator shaft, and a bottom fixing frame is welded to the bottom of the inner cavity of the elevator shaft. The screw electric cylinder is driven through the worm and gear speed reduction servo motor, the worm and gear speed reduction servo motor can automatically lock the lift car after stopping rotating, the safety of the lift car in the using process can be improved, meanwhile, the screw electric cylinder is installed at the bottom of an elevator shaft through the bottom fixing frame, and the safety of the lift car is improved. When the lift car ascends and descends, the worm and gear speed reduction servo motor, the screw electric cylinder and other driving structures do not ascend and descend along with the lift car, the weight of the lift car can be reduced, and the loading capacity of the lift car is improved.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, specifically to a screw-type electric cylinder elevator. Background Technology

[0002] A screw-type elevator uses a plunger machined into a rectangular thread, with a large nut containing a thrust bearing installed on top of the hydraulic cylinder. A motor, via a reducer (or belt), drives the nut to rotate, thus lifting the car up or down. Simply put, it's a giant screw at the bottom of the elevator, pushing the car up and down as it rotates. It's relatively safe because there's always something supporting it from below. Even in the event of a power outage and free fall, the screw would still have to drive the motor to do significant negative work, making the descent very slow. Therefore, riding this type of elevator guarantees safety. It also has a locking device that locks the screw to prevent free fall. Because it doesn't need a counterweight, it's smaller in size, and the motor can be installed underground, reducing the load-bearing requirements for small buildings (as long as the foundation is properly constructed).

[0003] Existing screw elevators monitor the descent speed of the elevator through a module inside the elevator control box during use. When the car descends at excessive speed, it is pulled back. However, the pulling force generated when the car falls is large, and the speed limiter is at risk of failure. At the same time, the drive motor is installed at the back of the car, which increases the car's weight and reduces its load capacity. To solve the above problems, this application proposes a screw electric cylinder elevator. Utility Model Content

[0004] (I) Purpose of the utility model

[0005] To address the technical problems existing in the background art, this utility model proposes a screw electric cylinder elevator. The screw electric cylinder is driven by a worm gear reducer servo motor. After the worm gear reducer servo motor stops rotating, it can automatically lock the car, improving the safety of the car during use. Simultaneously, the screw electric cylinder is installed at the bottom of the elevator shaft via a bottom fixing bracket. During car lifting and lowering, the worm gear reducer servo motor and screw electric cylinder, along with other driving structures, do not move with the car, reducing the car's weight and increasing its load-bearing capacity, thus solving the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To solve the above-mentioned technical problems, this utility model provides a screw electric cylinder elevator, including a car 1, an elevator shaft 2 and a decorative protective cover 3. The decorative protective cover 3 is installed on one side of the elevator shaft 2, the car 1 is located inside the decorative protective cover 3, a reinforcing frame 4 for improving the structural strength of the top of the car 1 is welded to the top surface of the car 1, the car 1 extends out from the middle of the reinforcing frame 4, and a screw electric cylinder 7 is installed in the inner cavity of the elevator shaft 2.

[0008] A bottom fixing frame 9 is welded to the bottom of the inner cavity of the elevator shaft 2. The screw electric cylinder 7 is installed on the bottom fixing frame 9. A worm gear reducer servo motor 10 for driving is installed on the side wall of the screw electric cylinder 7.

[0009] Preferably, a connecting seat 6 is welded to the back of the car 1, and the top of the piston rod of the screw electric cylinder 7 is connected to the connecting seat 6 by a lifting beam steel belt. The top of the connecting seat 6 is provided with a fixed steel belt connecting device 5, and a special guide roller 13 for linear motion is provided on the back of the car 1 along the guide rail 12 inside the shaft.

[0010] Preferably, a buffer seat 8 is installed at the top of the inner cavity of the elevator shaft 2, and the car 1 abuts against the buffer seat 8 after the car is raised.

[0011] Preferably, an mounting bracket 11 is installed on the inner wall of the elevator shaft 2, and the mounting bracket 11 is distributed at equal intervals from top to bottom on the inner wall of the elevator shaft 2.

[0012] Preferably, the mounting bracket 11 has a guide rail 12 fixed to its surface by a guide plate thread, and a guide roller 13 is rotatably provided on the back surface of the car 1 at a position corresponding to the guide rail 12, and the guide roller 13 abuts against the surface of the guide rail 12.

[0013] Preferably, brackets 15 are symmetrically welded on both sides of the bottom fixing frame 9, and a lower guide wheel 16 is rotatably provided on the top of the bracket 15.

[0014] Preferably, an upper guide wheel 14 is rotatably provided at the top of the inner cavity of the elevator shaft 2, corresponding to the position of the lower guide wheel 16. The upper guide wheel 14 and the lower guide wheel 16 are connected by a steel belt 17, and the surface of the steel belt 17 is connected to the back of the car 1 by a bracket.

[0015] The above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0016] 1. This utility model uses a worm gear reducer servo motor to drive a screw electric cylinder. After the worm gear reducer servo motor stops rotating, it can automatically lock the car, which can improve the safety of the car during use. At the same time, the screw electric cylinder is installed at the bottom of the elevator shaft through a bottom fixing bracket. When the car is raised or lowered, the worm gear reducer servo motor and screw electric cylinder and other drive structures do not rise or fall with it, which can reduce the weight of the car and increase the load capacity of the car.

[0017] 2. In this utility model, a steel belt connects the lower guide wheel and the upper guide wheel. When the car is running, the steel belt can drive the upper guide wheel to rotate. When the descent speed of the car exceeds the safety value, the safety caliper can automatically lock. The car speed runs smoothly according to the speed set in the screw electric cylinder control box, which can improve the safety of the car during use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a screw-type electric cylinder elevator according to the present invention;

[0019] Figure 2 This is a cross-sectional structural diagram of a screw-type electric cylinder elevator according to the present invention;

[0020] Figure 3 This is a schematic diagram of the car structure of a screw-type electric cylinder elevator according to the present invention;

[0021] Figure 4 This is a schematic diagram of the car drive structure of a screw-type electric cylinder elevator according to the present invention.

[0022] Figure label:

[0023] 1. Car; 2. Elevator shaft; 3. Decorative protective cover; 4. Reinforcing frame; 5. Fixed steel belt connecting device; 6. Connecting seat; 7. Screw electric cylinder; 8. Buffer seat; 9. Bottom fixing frame; 10. Worm gear reducer servo motor; 11. Mounting frame; 12. Guide rail; 13. Guide roller; 14. Upper guide wheel; 15. Bracket; 16. Lower guide wheel; 17. Steel belt. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0025] like Figure 1-4 As shown, the present invention proposes a screw electric cylinder elevator, including a car 1, an elevator shaft 2 and a decorative protective cover 3. The decorative protective cover 3 is installed on one side of the elevator shaft 2, the car 1 is located inside the decorative protective cover 3, a reinforcing frame 4 for improving the structural strength of the top of the car 1 is welded to the top surface of the car 1, the car 1 extends out from the middle of the reinforcing frame 4, and a screw electric cylinder 7 is installed in the inner cavity of the elevator shaft 2.

[0026] A bottom fixing frame 9 is welded to the bottom of the inner cavity of the elevator shaft 2. The screw electric cylinder 7 is installed on the bottom fixing frame 9. A worm gear reducer servo motor 10 for driving is installed on the side wall of the screw electric cylinder 7.

[0027] It should be noted that the worm gear reducer servo motor 10 drives the screw electric cylinder 7. The top of the piston rod of the screw electric cylinder 7 is connected to the car 1 through the connecting seat 6. After the piston rod of the screw electric cylinder 7 extends, it can drive the car 1 to move up and down within the decorative protective cover 3. At the same time, the worm gear reducer servo motor 10 is equipped with a worm gear and worm structure. The worm gear structure has self-locking properties. After the worm gear reducer servo motor 10 stops rotating, it can automatically lock the screw electric cylinder 7, which can improve the safety of the car 1 during use. Meanwhile, the screw electric cylinder 7 is installed at the bottom of the elevator shaft 2 through the bottom fixing bracket 9. When the car 1 is raised and lowered, the worm gear reducer servo motor 10 and the screw electric cylinder 7 and other driving structures do not move up and down together, which can reduce the weight of the car 1 and increase the load capacity of the car 1.

[0028] In this embodiment, as Figure 3 As shown, a connecting seat 6 is welded to the back of the car 1. The top of the piston rod of the screw electric cylinder 7 is connected to the connecting seat 6 by a lifting beam steel belt. A fixed steel belt connecting device 5 is provided on the top of the connecting seat 6. A special guide roller 13 for linear motion is provided on the back of the car 1 along the guide rail 12 inside the shaft.

[0029] It should be noted that the top of the piston rod of the screw electric cylinder 7 is inserted into the plug-in seat 6 and fixed by the fixing steel strip connecting device 5, which can facilitate the separation of the screw electric cylinder 7 from the car 1, thereby facilitating maintenance.

[0030] In this embodiment, as Figure 4 As shown, a buffer seat 8 is installed at the top of the inner cavity of the elevator shaft 2, and the car 1 abuts against the buffer seat 8 after the car is raised.

[0031] It should be noted that after the car 1 is raised, it comes into contact with the buffer seat 8. The buffer pad 8 can buffer the car 1 to improve the comfort of the car 1 during operation.

[0032] In this embodiment, as Figure 3 and Figure 4 As shown, an installation frame 11 is installed on the inner wall of the elevator shaft 2. The installation frame 11 is distributed equidistantly from top to bottom on the inner wall of the elevator shaft 2. A guide rail 12 is fixed to the surface of the installation frame 11 by a guide plate thread. A guide roller 13 is rotatably provided on the back surface of the car 1 at a position corresponding to the guide rail 12. The guide roller 13 abuts against the surface of the guide rail 12.

[0033] It should be noted that the guide rail 12 is fixed to the inner wall of the elevator shaft 2 by the mounting bracket 11, and the guide roller 13 driving the back of the car 1 abuts against the surface of the guide rail 12, which can guide the lifting and lowering of the car 1.

[0034] In this embodiment, as Figure 4As shown, brackets 15 are symmetrically welded on both sides of the bottom fixing frame 9. An upper guide wheel 14 is rotatably provided at the top of the inner cavity of the elevator shaft 2, corresponding to the position of the lower guide wheel 16. The upper guide wheel 14 and the lower guide wheel 16 are connected by a steel belt 17. The surface of the steel belt 17 is connected to the back of the car 1 through a bracket.

[0035] It should be noted that the steel belt 17 connects the lower guide wheel 16 and the upper guide wheel 14. When the car 1 is running, the upper guide wheel 14 can be rotated by the steel belt 17. When the descent speed of the car 1 exceeds the safety value, the upper guide wheel 14 can be automatically locked and the descending car 1 can be pulled by the steel belt 17, which can improve the safety of the car 1 during use.

[0036] The working principle and usage of this utility model are as follows: The worm gear reducer servo motor 10 drives the screw electric cylinder 7. The top of the piston rod of the screw electric cylinder 7 is connected to the car 1 through the connecting seat 6. After the piston rod of the screw electric cylinder 7 extends, it can drive the car 1 to move up and down within the decorative protective cover 3. The guide roller 13 on the back of the car 1 abuts against the surface of the guide rail 12, which can guide the lifting and lowering of the car 1. At the same time, the worm gear reducer servo motor 10 is equipped with a worm gear and worm structure. The worm gear structure has self-locking properties. After the worm gear reducer servo motor 10 stops rotating, it can automatically lock the screw electric cylinder. The cylinder 7 is locked, and the steel belt 17 connects the lower guide wheel 16 and the upper guide wheel 14. When the car 1 is running, the upper guide wheel 14 can be driven to rotate by the steel belt 17. When the descent speed of the car 1 exceeds the safety value, the upper guide wheel 14 can be automatically locked and the descending car 1 can be pulled by the steel belt 17, which can improve the safety of the car 1 during use. The screw electric cylinder 7 is installed at the bottom of the elevator shaft 2 through the bottom fixing frame 9. When the car 1 is raised and lowered, the worm gear reducer servo motor 10 and the screw electric cylinder 7 and other drive structures do not follow the rise and fall, which can reduce the weight of the car 1 and increase the load capacity of the car 1.

[0037] It should be understood that the above-described specific embodiments of this utility model are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims or their equivalents.

Claims

1. A screw-type electric cylinder elevator, comprising a car (1), an elevator shaft (2), and a decorative protective cover (3), wherein the decorative protective cover (3) is installed on one side of the elevator shaft (2), and the car (1) is disposed inside the decorative protective cover (3), characterized in that, The top surface of the car (1) is welded with a reinforcing frame (4) for improving the structural strength of the top of the car (1). The car (1) extends out from the middle of the reinforcing frame (4). A screw electric cylinder (7) is installed in the inner cavity of the elevator shaft (2). The bottom of the inner cavity of the elevator shaft (2) is welded with a bottom fixing frame (9), the screw electric cylinder (7) is installed on the bottom fixing frame (9), and the side wall of the screw electric cylinder (7) is equipped with a worm gear reducer servo motor (10) for driving.

2. The screw-type electric cylinder elevator according to claim 1, characterized in that, The car (1) has a connecting seat (6) welded to its back. The top of the piston rod of the screw electric cylinder (7) is connected to the connecting seat (6) by a lifting beam steel belt. The top of the connecting seat (6) is provided with a fixed steel belt connecting device (5). The back of the car (1) is provided with a special guide roller (13) for linear motion along the guide rail (12) inside the shaft.

3. A screw-type electric cylinder elevator according to claim 2, characterized in that, A buffer seat (8) is installed at the top of the inner cavity of the elevator shaft (2), and the car (1) abuts against the buffer seat (8) after it is raised.

4. A screw-type electric cylinder elevator according to claim 3, characterized in that, The elevator shaft (2) is equipped with an installation frame (11) on its inner wall. The installation frames (11) are distributed at equal intervals from top to bottom on the inner wall of the elevator shaft (2).

5. A screw-type electric cylinder elevator according to claim 4, characterized in that, The mounting bracket (11) has a guide rail (12) fixed to its surface by a guide plate thread. The back surface of the car (1) is provided with a guide roller (13) at a position corresponding to the guide rail (12), and the guide roller (13) abuts against the surface of the guide rail (12).

6. A screw-type electric cylinder elevator according to claim 5, characterized in that, The bottom fixing frame (9) has brackets (15) symmetrically welded on both sides, and the top of the bracket (15) is provided with a lower guide wheel (16) for rotation.

7. A screw-type electric cylinder elevator according to claim 6, characterized in that, An upper guide wheel (14) is rotatably provided at the top of the inner cavity of the elevator shaft (2) corresponding to the position of the lower guide wheel (16). The upper guide wheel (14) and the lower guide wheel (16) are connected by a steel belt (17). The surface of the steel belt (17) is connected to the back of the car (1) through a bracket.

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