Energy-saving elevator energy feedback device

Abstract

The utility model provides an energy-saving elevator energy feedback device, which belongs to the technical field of energy-saving elevator equipment, and comprises a main body bracket, a traction machine, a car and a balancing weight, the output end of the traction machine is provided with a driving wheel, and the two ends of a rope on the driving wheel are respectively suspended on pulley blocks on the car and the balancing weight. An energy feedback mechanism is further arranged on the main body support and comprises a first connecting shaft and a first belt pulley, the first belt pulley is connected with a second belt pulley through a belt, a second connecting shaft is arranged on the second belt pulley, a generator is arranged on the second connecting shaft, and the generator is electrically connected with a battery module. In the running process of the elevator, the generator is independently driven to generate electricity, the traction machine does not depend on the original structure of the traction machine, and the traction machine can be additionally installed as an independent system, is suitable for old elevator transformation, can be matched with different types of elevators, is more flexible and convenient to use and can better cope with different installation environments.

Description

Technical Field

[0001] This utility model mainly relates to the technical field of energy-saving elevator equipment, specifically an energy-saving elevator energy feedback device. Background Technology

[0002] Energy-efficient elevators are products that incorporate a series of energy-saving technologies and measures in their design, manufacturing, and operation to reduce energy consumption and environmental impact during use. The elevator's operating principle can be understood as a system of fixed pulleys suspending the car and counterweight at opposite ends. The traction machine, which acts as the pulleys, is essentially an electric motor. When the elevator is fully loaded and descending (the car is heavier than the counterweight), or unloaded and ascending (the counterweight is heavier than the car), any imbalance between the car and counterweight will generate electricity in the traction system. Existing elevators typically have an energy-saving braking resistor box installed on top of the control cabinet to... The elevator consumes a significant amount of electrical energy during operation, which is wasted on the heating resistors. This not only leads to energy waste but also causes the temperature in the elevator machine room to rise. To prevent overheating, the machine room must be equipped with air conditioning, which itself is an energy-consuming product. An elevator energy feedback device can effectively regenerate the electrical energy generated during elevator operation into AC power and send it back to the power grid for use by other elevators or equipment. This slows down the main electricity meter, thereby achieving energy savings. Depending on the frequency of elevator use, the maximum energy saving rate can reach over 40%.

[0003] The traction machine is the core drive component of an elevator. When the elevator is lightly loaded going up or heavily loaded going down, the traction machine is in a generator state, directly converting mechanical energy into electrical energy. The energy feedback device collects this electrical energy through the DC bus of the frequency converter, inverts it, and feeds it back to the power grid. In order to reduce mechanical transmission losses and improve conversion efficiency, existing elevator feedback devices usually connect the generator directly to the traction machine coaxially to generate electricity. However, this method depends heavily on the performance of the traction machine and needs to be matched with the traction machine (such as a permanent magnet synchronous motor). It has high requirements for motor efficiency and control precision. Moreover, for older elevators without reserved interfaces, it may be necessary to replace the traction machine or frequency converter, which is costly and difficult to retrofit. Utility Model Content

[0004] This utility model provides a solution that is significantly different from existing technologies, addressing the problem that existing elevator energy feedback devices are too simplistic. Specifically, this utility model provides an energy-saving elevator energy feedback device to solve the problem mentioned in the background that most existing elevator energy feedback devices use a generator that is directly connected to the traction machine on the same axis to generate electricity. This method relies heavily on the performance of the traction machine and needs to be matched with the traction machine (such as a permanent magnet synchronous motor), making it unusable in many older residential areas and lacking universal applicability.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] An energy-saving elevator energy feedback device includes a main support frame, a traction machine, a car, and a counterweight. The traction machine is located on the upper side of the main support frame. Both the car and the counterweight are equipped with pulley blocks. The output end of the traction machine is equipped with a drive wheel. The two ends of the rope on the drive wheel are respectively suspended from the pulley blocks on the car and the counterweight. The main support frame is also equipped with an energy feedback mechanism. The energy feedback mechanism includes a first connecting shaft, on which a first pulley is mounted. The first pulley is connected to a second pulley via a belt. The second pulley is mounted on a second connecting shaft, on which a generator is mounted, and the generator is electrically connected to a battery module.

[0007] Furthermore, an energy storage converter is provided between the generator and the battery module.

[0008] Furthermore, one end of the first connecting shaft is connected to the shaft on the drive wheel.

[0009] Furthermore, a first side frame is provided at the end of the first connecting shaft away from the drive wheel, and the first side frame and the first connecting shaft are rotatably connected.

[0010] Furthermore, a second side frame is provided at one end of the second connecting shaft, and the second side frame and the second connecting shaft are rotatably connected.

[0011] Furthermore, a positioning frame is provided on the upper side of the main support, and the output end of the traction machine passes through the round hole on the positioning frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This utility model, through the arrangement of a first connecting shaft, a first pulley, a second pulley, a second connecting shaft, a generator, a battery module, an energy storage converter, a first side frame, and a second side frame, enables the generator to generate electricity independently during elevator operation. It does not rely on the original structure of the traction machine and can be installed as an independent system. It is suitable for the renovation of old elevators and can be adapted to different types of elevators (such as worm gear or gearless traction machines). It is more flexible and convenient to use, can better cope with different installation environments, has low cost, and has certain practical value and application prospects.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. 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 main support structure of this utility model;

[0017] Figure 3 This is a schematic diagram showing the connection between the traction machine and the energy feedback mechanism of this utility model.

[0018] In the diagram: 1. Main support frame; 11. Positioning frame; 2. Traction machine; 21. Drive wheel; 3. Car; 31. Pulley block; 4. Counterweight; 5. Energy feedback mechanism; 51. First connecting shaft; 52. First pulley; 53. Second pulley; 54. Second connecting shaft; 55. Generator; 56. Battery module; 57. Energy storage converter; 58. First side frame; 59. Second side frame. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Please refer to the appendix carefully. Figure 1-3An energy-saving elevator energy feedback device includes a main support 1, a traction machine 2, a car 3, and a counterweight 4. The traction machine 2 is located on the upper side of the main support 1. Both the car 3 and the counterweight 4 are equipped with pulley blocks 31. The output end of the traction machine 2 is equipped with a drive wheel 21. The two ends of the rope on the drive wheel 21 are respectively suspended from the pulley blocks 31 on the car 3 and the counterweight 4. The main support 1 is also equipped with an energy feedback mechanism 5. The energy feedback mechanism 5 includes a first connecting shaft 51. The first connecting shaft 51 is equipped with a first pulley 52. ​​The first pulley 52 is connected to a second pulley 53 via a belt. The second pulley 53 is equipped with a second connecting shaft 54. The second connecting shaft 54 ​​is equipped with a generator 55, and the generator 55 is electrically connected to a battery module 56.

[0023] The above structure enables the generator 55 to generate electricity independently during elevator operation, without relying on the original structure of the traction machine 2. It can be installed as an independent system, suitable for the renovation of old elevators, and can be adapted to different types of elevators (such as worm gear or gearless traction machine 2). It is more flexible and convenient to use, can better cope with different installation environments, has a low cost, and has certain practical value and application prospects.

[0024] The specific operation is as follows: During the operation of the elevator, the drive wheel 21 rotates, which in turn drives the first connecting shaft 51 to rotate. The first connecting shaft 51 drives the second connecting shaft 54 ​​to rotate synchronously through the first pulley 52, the belt, and the second pulley 53. Since the second connecting shaft 54 ​​is connected to the input end of the generator 55, it drives the generator 55 to rotate. The generator 55 then starts to generate electricity and stores the electrical energy in the battery module 56.

[0025] Please refer to the appendix carefully. Figure 2 and attached Figure 3An energy storage converter 57 is provided between the generator 55 and the battery module 56. Through the energy storage converter 57, the generator 55 and the battery module 56 are connected to realize bidirectional energy flow (charging / discharging). It can convert the DC power of the generator 55 into the voltage and current required by the battery module 56, and at the same time support the grid-side energy feedback. One end of the first connecting shaft 51 is connected to the shaft on the drive wheel 21. The end of the first connecting shaft 51 away from the drive wheel 21 is provided with a first side frame 58. The first side frame 58 and the first connecting shaft 51 are rotatably connected. Through the first side frame 58, the first connecting shaft 51 can rotate stably and quickly. One end of the second connecting shaft 54 ​​is provided with a second side frame 59. The second side frame 59 and the second connecting shaft 54 ​​are rotatably connected. Through the second side frame 59, the second connecting shaft 54 ​​can rotate stably. A positioning frame 11 is provided on the upper side of the main support 1, and the output end of the traction machine 2 passes through the round hole on the positioning frame 11, which improves the stability of the rotation of the drive wheel 21 at the output end of the traction machine 2.

[0026] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. An energy-saving elevator energy feedback device, comprising a main support (1), a traction machine (2), a car (3), and a counterweight (4), wherein the traction machine (2) is located on the upper side of the main support (1), and pulley blocks (31) are provided on both the car (3) and the counterweight (4), and a drive wheel (21) is provided at the output end of the traction machine (2), and the two ends of the rope on the drive wheel (21) are respectively suspended from the pulley blocks (31) on the car (3) and the counterweight (4), characterized in that, The main support (1) is also provided with an energy feedback mechanism (5). The energy feedback mechanism (5) includes a first connecting shaft (51), a first pulley (52) is provided on the first connecting shaft (51), the first pulley (52) is connected to a second pulley (53) via a belt, a second connecting shaft (54) is provided on the second pulley (53), a generator (55) is provided on the second connecting shaft (54), and the generator (55) is electrically connected to a battery module (56).

2. The energy-saving elevator energy feedback device according to claim 1, characterized in that, An energy storage converter (57) is provided between the generator (55) and the battery module (56).

3. The energy-saving elevator energy feedback device according to claim 1, characterized in that, One end of the first connecting shaft (51) is connected to the shaft on the drive wheel (21).

4. The energy-saving elevator energy feedback device according to claim 3, characterized in that, The first connecting shaft (51) is provided with a first side frame (58) at the end away from the drive wheel (21), and the first side frame (58) and the first connecting shaft (51) are rotatably connected.

5. The energy-saving elevator energy feedback device according to claim 1, characterized in that, The second connecting shaft (54) has a second side bracket (59) at one end, and the second side bracket (59) and the second connecting shaft (54) are rotatably connected.

6. The energy-saving elevator energy feedback device according to claim 1, characterized in that, A positioning frame (11) is provided on the upper side of the main support (1), and the output end of the traction machine (2) passes through the round hole on the positioning frame (11).

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