Variable voltage counterweight self-regulating elevator

Abstract

The present invention provides a variable-pressure counterweight self-adjusting elevator, which includes a hoistway, a car, a traction mechanism, and a counterweight block. The traction mechanism is installed at the upper part of the hoistway, and the traction mechanism is connected to the car and the upper part of the counterweight block through steel cables. A circular tube-shaped air passage pipe is also vertically installed in the hoistway, and the interior of the air passage pipe is processed into a smooth surface. The counterweight block is cylindrical, and the counterweight block is slidingly sealed and installed inside the air passage pipe. The upper part of the air passage pipe is open and the lower part is sealed. The lower part of the air passage pipe is equipped with a main air release valve. The elevator has a simple structure and is easy to use. The counterweight of the elevator car can be adjusted, and the use is safer. At the same time, the gravitational potential energy of the elevator car can be collected and reused, which greatly reduces the energy consumption of the elevator operation.

Description

Technical Field

[0001] The invention relates to the technical field of elevators, and in particular to a voltage-variable counterweight self-regulating elevator. Background Art

[0002] An elevator is a building facility used to transport goods up and down in multi-story or high-rise buildings. An elevator usually includes a car and a counterweight connected by a steel cable, as well as a traction mechanism that controls the movement of the steel cable. The car is a loading component mainly used to transport people and goods. The counterweight reduces the requirements of the car gravity on the traction power through a pulley structure, thereby greatly reducing the power of the elevator during operation. However, when the elevator is in use, the goods and people it carries are usually not fixed, so that the car still has a large traction force to pull it even after the counterweight is used. This is not only energy-consuming, but also because the maximum traction force of the traditional traction mechanism is usually fixed during operation. When the elevator is running, the maximum load of the elevator cannot be too large, otherwise it will cause a large safety hazard. At the same time, when a traditional elevator is running downward, the gravitational potential energy of the elevator car and the loaded materials inside it will be naturally dissipated, which is relatively wasteful. Summary of the invention

[0003] In view of the above problems, the present invention provides a transformer-counterweight self-regulating elevator which has a simple structure, is easy to use, can adjust the counterweight of the elevator car, is safer to use, and can collect the gravitational potential energy of the elevator car for reuse, thereby greatly reducing the energy consumption of the elevator operation.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a variable-pressure counterweight self-regulating elevator, which includes a hoistway, a car, a traction mechanism, and a counterweight block. The traction mechanism is installed in the upper part of the hoistway, and the traction mechanism is connected to the car and the upper part of the counterweight block respectively through steel cables. A circular tube-shaped air path main pipe is also vertically installed in the hoistway, and the interior of the air path main pipe is processed into a smooth surface. The counterweight block is cylindrical, and the counterweight block is slidingly sealed and installed inside the air path main pipe. The upper part of the air path main pipe is open and the lower part is sealed, and the lower part of the air path main pipe is equipped with a main air relief valve.

[0005] Preferably, the exterior of the counterweight block is processed with two or more annular sealing grooves, the sealing grooves are equipped with sealing rings, and the counterweight block is slidingly and sealingly assembled with the inner wall of the air pipe via the sealing rings.

[0006] Preferably, the well is also equipped with a gas circuit auxiliary pipe, which is sealed at the top and bottom. The lower part of the gas circuit auxiliary pipe is connected to the lower part of the gas circuit main pipe through a central air valve. The lower part of the gas circuit auxiliary pipe is also equipped with a secondary air relief valve connected to the outside.

[0007] Preferably, the main air relief valve, the intermediate air valve and the auxiliary air relief valve are all electrically controlled valves, and are respectively connected to a control circuit.

[0008] Preferably, the gas main pipe is composed of two or more sections, and the sections of the gas main pipe are sealed and assembled.

[0009] Preferably, the traction mechanism is provided with steering pulleys on both sides, and both ends of the steel cable are respectively wound around the steering pulleys on both sides and connected to the car and the counterweight.

[0010] The beneficial effects of the present invention are as follows: when the variable pressure counterweight self-regulating elevator is used, if the people or goods loaded in the car are too heavy, the main air release valve of the gas main pipe is closed, and a closed chamber is formed at the lower part of the gas main pipe. When the car moves downward, the air pressure in the closed chamber at the lower part of the gas main pipe is reduced to form a negative pressure. At this time, the counterweight block is subjected to downward gas pressure, so that the counterweight block applies a greater traction force to the steel cable connected to it, which greatly reduces the traction force applied by the traction mechanism to the car, and can greatly reduce the power of the car during operation. When the car moves upward, since the pressure in the gas main pipe is negative pressure, the counterweight block is also subjected to the downward gravity and gas pressure, so that the steel cable connected to the counterweight block is subjected to a greater upward pulling force, and the traction force applied by the traction mechanism to the car is greatly reduced. It can also greatly reduce the power of the car during operation. The design of the main air relief valve can adjust the air pressure at the lower part of the air main pipe by opening and closing, so that the tension applied by the counterweight block to the steel cable is adjusted according to the gravity of the car, so that the tension of the counterweight block on the steel cable is closest to the tension of the car on the steel cable, which can effectively reduce the operating power of the elevator and save more energy, while making the car have a larger load capacity and a wider range of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the side section of a variable-voltage counterweight self-regulating elevator.

[0012] Figure 2 It is a schematic diagram of the cross-sectional structure of the transformer counterweight self-regulating elevator in the back direction.

[0013] Figure 3 It is a structural diagram of the counterweight block being assembled in the gas pipe. DETAILED DESCRIPTION

[0014] The present invention is further described below in conjunction with embodiments:

[0015] like Figure 1 and Figure 2As shown in the embodiment, the variable pressure counterweight self-regulating elevator is similar to the traditional elevator structure, which includes a hoistway 1, a car 2, a traction mechanism 3, and a counterweight 4. The hoistway 1 is designed with an opening connected to each floor, and the car 2 is designed with an electric door controlled by a main control circuit. In this embodiment, the traction mechanism 3 is installed at the upper part of the hoistway 1, and the traction mechanism 3 is connected to the car 2 and the upper part of the counterweight 4 respectively through a steel cable 31, and the counterweight is installed at the rear of the car. In the elevator of this patent, the hoistway 1 is also vertically equipped with a circular tube-shaped gas pipe 5, the interior of the gas pipe 5 is processed into a smooth surface, the counterweight 4 is cylindrical, and the counterweight 4 is slidingly sealed and installed inside the gas pipe 5. The upper part of the gas pipe 5 is open and the lower part is sealed, and the lower part of the gas pipe 5 is equipped with a main air release valve 51. The counterweight 4 and the lower part of the gas pipe 5 form a closed structure.

[0016] When the variable pressure counterweight self-regulating elevator is in use, if the people or goods loaded in the car 2 are too heavy, the main air release valve 51 of the gas main pipe 5 is closed, and a closed chamber is formed at the lower part of the gas main pipe 5. When the car 2 moves downward, the air pressure in the closed chamber at the lower part of the gas main pipe 5 is reduced to form a negative pressure. At this time, the counterweight block 4 is subjected to downward gas pressure, so that the counterweight block 4 applies a greater traction force to the steel cable 41 connected thereto, which greatly reduces the traction force applied by the traction mechanism 3 to the car 2, and can greatly reduce the power of the car 2 during operation. When the car 2 moves upward, since the pressure in the gas main pipe 5 is negative pressure, the counterweight block 4 is also subjected to the downward gravity and gas pressure, so that the steel cable 31 connected to the counterweight block 4 is subjected to a greater upward pulling force, and the traction force applied by the traction mechanism 3 to the car is greatly reduced. Similarly, the power of the car 2 during operation can be greatly reduced. In the specific design, when the gravity of the counterweight block 4 is greater than the overall gravity of the car 2, the lower closed cavity in the air pipe 5 can be opened to generate positive pressure to apply an upward thrust to the counterweight block 4, thereby effectively reducing the traction force provided by the traction mechanism 3 and reducing energy consumption.

[0017] The design of the main air relief valve 51 can adjust the air pressure at the bottom of the air circuit main pipe 5 by opening and closing, so that the tension applied by the counterweight 4 to the steel cable 31 is adjusted according to the gravity of the car 2, so that the tension of the counterweight on the steel cable is closest to the tension of the car on the steel cable, which can effectively reduce the operating power of the elevator and save more energy, while making the car 2 have a larger load capacity and a wider range of use.

[0018] In the specific design, such as Figure 3As shown, the exterior of the counterweight 4 is processed with more than two annular sealing grooves, and a sealing ring 41 is installed in the sealing groove. The counterweight 4 is assembled and slidably sealed with the inner wall of the gas line main pipe 5 through the sealing ring 41. The sealing groove can limit the sealing ring 4. In this embodiment, the sealing ring is an O-ring, which is more cost-effective. The use of the sealing ring 41 can greatly reduce the finish of the exterior of the counterweight 4, making the cost of the counterweight 4 lower, which can effectively reduce the equipment cost. At the same time, the sealing ring 41 structure is used to connect the counterweight 4 and the gas line main pipe 5. When the sealing ring 41 is worn, the replacement cost is lower than that of the counterweight 4.

[0019] In the specific design, such as Figure 2 As shown, the well 1 is also equipped with a gas circuit auxiliary pipe 6, the gas circuit auxiliary pipe 6 is sealed at the top and bottom, the lower part of the gas circuit auxiliary pipe 6 is connected with the lower part of the gas circuit main pipe 5 through the middle connecting air valve 61, and the lower part of the gas circuit auxiliary pipe 6 is also equipped with a secondary air leakage valve 62 connected to the outside. In this way, when the middle connecting air valve 61 is opened, the volume of the air cavity connected to the seal at the lower part of the counterweight block 4 is larger. When the pressure of the sealed air cavity at the lower part of the gas circuit main pipe 5 is too small or too large, the gas in the lower part of the gas circuit main pipe 5 and the gas in the gas circuit auxiliary pipe 6 can be neutralized by opening the middle connecting air valve 61. In this way, when the middle connecting air valve 61 is closed, the potential of the internal gas to do work can be separately preserved, so that the main air leakage valve 51 of the gas circuit main pipe 5 can be opened and closed independently. For example, when the weight of the car 2 is greater than the counterweight 4, the downward movement of the car 2 can generate negative pressure at the lower part of the closed air path main pipe 5. As the car continues to move downward, the negative pressure becomes greater and greater, so that the downward pulling force of the counterweight 4 may be greater than that of the car 2, or even greater and greater. At this time, the negative pressure at the lower part of the air path main pipe 5 is neutralized in the air path auxiliary pipe 6 by opening the middle air valve 61. When the car 2 stops, the middle air valve 61 can be closed to keep the air path auxiliary pipe 6 in a negative pressure state. When negative pressure is needed again at the lower part of the air path main pipe 5 to adjust the counterweight, the connection between the air path main pipe 5 and the air path auxiliary pipe 6 can be opened through the middle air valve 61, thereby releasing the stored air pressure potential energy, further reducing the energy consumption of pulling the car, and making the overall equipment more energy-efficient.

[0020] In the specific design, in order to better control the pressure in the gas main pipe 5 and the gas sub-pipe 6, the main air relief valve 51, the intermediate air valve 61, and the auxiliary air relief valve 62 are all electrically controlled valves, and are respectively connected to the control circuit. At the same time, the pressure measuring valve circuit is installed in the gas main pipe 5 and the gas sub-pipe 6 to transmit the pressure to the main control computer of the elevator, and at the same time, the tension applied by the traction mechanism 3 to the steel cable is transmitted to the computer, so that the main air relief valve 51, the intermediate air valve 61, and the auxiliary air relief valve 62 are opened and closed through comprehensive calculation to achieve the best energy saving state.

[0021] In the specific design, when the elevator structure is used on a higher floor, the length of the gas main pipe 5 may be too high. In this case, the gas main pipe 5 is composed of two or more sections, each section of the gas main pipe 5 can be manufactured separately, and then the sections are assembled into the whole of the gas main pipe through sealing connection.

[0022] In the specific design, the two sides of the traction mechanism 3 are respectively equipped with a steering pulley 32, and the two ends of the steel cable 31 are respectively wound from the steering pulleys 32 on both sides and connected to the car 2 and the counterweight 4. In this way, the smooth turning of the steel cable 31 can be effectively ensured, and the force of the traction mechanism 3 is more reasonable during operation.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A variable-voltage counterweight self-regulating elevator, comprising a hoistway (1), a car (2), a traction mechanism (3), and a counterweight (4), wherein the traction mechanism (3) is mounted on the upper part of the hoistway (1), and the traction mechanism (3) is connected to the upper part of the car (2) and the counterweight (4) through a steel cable (31); characterized in that: A circular tube-shaped gas main pipe (5) is vertically installed in the well (1), the interior of the gas main pipe (5) is processed into a smooth surface, the counterweight block (4) is cylindrical, the counterweight block (4) is slidingly and sealingly installed inside the gas main pipe (5), the upper part of the gas main pipe (5) is open and the lower part is sealed, and the lower part of the gas main pipe (5) is equipped with a main air release valve (51); The well (1) is also equipped with a gas circuit auxiliary pipe (6), the gas circuit auxiliary pipe (6) is sealed at the top and bottom, the lower part of the gas circuit auxiliary pipe (6) is connected with the lower part of the gas circuit main pipe (5) through a central connecting air valve (61), and the lower part of the gas circuit auxiliary pipe (6) is also equipped with a secondary air release valve (62) connected to the outside; When the weight of the car (2) is greater than the counterweight (4), the central connecting air valve (61) is opened so that the negative pressure at the lower part of the air path main pipe (5) is neutralized in the air path auxiliary pipe (6); when the car (2) stops, the central connecting air valve (61) is closed so that the air path auxiliary pipe (6) maintains a negative pressure state; when negative pressure is required to adjust the counterweight, the communication between the air path main pipe (5) and the air path auxiliary pipe (6) is opened through the central connecting air valve (61); The gas circuit main pipe (5) is composed of more than two sections, and each section of the gas circuit main pipe (5) is sealed and assembled.

2. The variable voltage counterweight self-regulating elevator according to claim 1, characterized in that: The counterweight block (4) is processed with two or more annular sealing grooves on its exterior, and a sealing ring (41) is installed in the sealing groove. The counterweight block (4) is slidingly sealed with the inner wall of the gas path main pipe (5) via the sealing ring (41).

3. The variable voltage counterweight self-regulating elevator according to claim 1, characterized in that: The main air release valve (51), the intermediate air release valve (61) and the auxiliary air release valve (62) are all electrically controlled valves and are respectively connected to a control circuit.

4. The variable voltage counterweight self-regulating elevator according to claim 1, characterized in that: The two sides of the traction mechanism (3) are respectively equipped with steering pulleys (32), and the two ends of the steel cable (31) are respectively wound around the steering pulleys (32) on both sides and connected to the car (2) and the counterweight (4).

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