An elevator counterweight

Abstract

This invention discloses an elevator counterweight frame, comprising a frame, a sheave, and a counterweight block. The frame has a space for accommodating the counterweight block. At least one sheave is provided, mounted on the counterweight upper beam at the top of the frame and rotatably connected to it. A power generation module is located on one side of the sheave body. The power generation module includes a stator frame, which is fitted onto and rotatably connected to the sheave's axle. Multiple winding posts are evenly distributed around the outer side wall of the stator frame, with coils wound around them. Multiple permanent magnets are evenly distributed around the edge of the sheave body, corresponding to the winding posts. Strain gauges are mounted on the counterweight upper beam. In this invention, the strain gauges and the power generation module work together to monitor the weight of the counterweight block, while the power generation module generates its own power to supply the strain gauges. Throughout the process, the mechanical energy of the sheave is converted into electrical energy, achieving self-sufficiency in electrical energy without the need for an external power source.

Description

Technical Field

[0001] This invention relates to the field of elevator technology, and more specifically, to an elevator counterweight frame. Background Technology

[0002] Counterweights are crucial components of elevator balancing systems, used to balance the weight of the elevator car, and are installed within the counterweight frame. Currently, counterweights on the market are generally made of cement or metal. Cement counterweights tend to crumble after a certain period of use, altering their weight, while metal counterweights are susceptible to theft. Therefore, it is necessary to monitor the counterweights to avoid potential issues related to insufficient balance. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an elevator counterweight frame.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An elevator counterweight frame includes a frame, a sheave, and a counterweight block. The frame has a space for accommodating the counterweight block. At least one sheave is provided, mounted on a counterweight upper beam at the top of the frame and rotatably connected to it. A power generation module is provided on one side of the sheave body. The power generation module includes a stator frame, which is fitted onto and rotatably connected to the sheave axle. Multiple winding posts are evenly distributed around the outer side wall of the stator frame, with coils wound around each post. Multiple permanent magnets are evenly distributed around the edge of the sheave body, corresponding to the winding posts. Strain gauges are mounted on the counterweight upper beam.

[0006] Furthermore, a nylon clip is installed between two adjacent permanent magnets.

[0007] Furthermore, a temperature sensor is installed on the stator frame at the position corresponding to the pulley axle.

[0008] Furthermore, the sheave body is provided with a first heat dissipation hole corresponding to the winding post.

[0009] Furthermore, the counterweight upper beam is provided with a mounting groove for installing strain gauges, and a second heat dissipation hole is provided at the bottom of the mounting groove.

[0010] Furthermore, a fulcrum is provided at the position of the sheave axle corresponding to the counterweight upper beam, and a U-bolt is installed at the position of the fulcrum corresponding to the counterweight upper beam. The sheave axle is rotatably connected to the fulcrum and the U-bolt.

[0011] Furthermore, the rack is equipped with a controller, a battery, and an antenna.

[0012] The beneficial effects of this invention are:

[0013] 1. In this invention, strain gauges and a power generation module work together to monitor the weight of the counterweight on the one hand, and generate electricity from the power generation module to power the strain gauges on the other hand. In the whole process, the mechanical energy of the rope wheel is converted into electrical energy to achieve self-sufficiency in electrical energy, without the need for an external power source, so that the external power source can be effectively output to the traction machine.

[0014] 2. In this invention, by setting up a controller, the controller can control the electrical energy generated by the power generation module to be stored in the battery, and control the electrical energy in the battery to supply power to the strain gauge and to energize the coil of the power generation module. At the same time, the controller integrates a data acquisition function. By being electrically connected to the strain gauge, the data acquired by the strain gauge can be transmitted to the controller. By setting up an antenna, the antenna can transmit the data acquired by the controller wirelessly, and the controller can be controlled wirelessly. By setting up a battery, the battery is used to store electrical energy and supply power.

[0015] 3. In this invention, by setting a nylon clip, on the one hand, a single permanent magnet can be limited, and on the other hand, all permanent magnets can be formed into a whole, improving the magnetic attraction effect and preventing the permanent magnets from shifting and detaching from the rope wheel under the action of centrifugal force. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of one structure of the elevator counterweight frame in this embodiment;

[0017] Figure 2 This is a schematic diagram of one structure of the power generation module in this embodiment;

[0018] Figure 3 This is a schematic diagram of one structure of the stator frame in this embodiment;

[0019] Figure 4 This is a schematic diagram of one structure of the rope pulley in this embodiment;

[0020] Figure 5 This is a schematic diagram of a counterweight beam in this embodiment.

[0021] Reference numerals in the attached drawings: Frame 1, Sheave 2, Wheel body 201, Axle 202, First heat dissipation hole 203, Wheel groove 205, Counterweight 3, Accommodation space 4, Counterweight upper beam 5, Mounting groove 501, Second heat dissipation hole 502, Support point 503, Generator module 6, Stator frame 601, Winding post 602, Coil 603, Permanent magnet 604, Nylon clip 605, Wire hole 606, Strain gauge 7, Temperature sensor 8, U-bolt 9, Controller 10, Battery 11, Antenna 12. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example: An elevator counterweight frame, such as Figures 1-5 As shown, the system includes a frame 1, a pulley 2, and a counterweight 3. The frame 1 is made of 42CrMo alloy steel and has an internal accommodating space 4 for accommodating the counterweight 3. Multiple counterweights 3 are provided and installed in the accommodating space 4 of the frame 1. At least one pulley 2 is installed on the counterweight upper beam 5 at the top of the frame 1 and is rotatably connected to the counterweight upper beam 5. The outer wall of the pulley body 201 of the pulley 2 has a groove 205 for wrapping the wire rope. The pulley 2 connects the frame 1 to the car through the wire rope.

[0024] Furthermore, such as Figure 2 As shown, a power generation module 6 is provided on one side of the sheave body 201 of the rope pulley 2. The power generation module 6 includes a stator frame 601, which is fitted onto the axle 202 of the rope pulley 2 and rotatably connected to the axle 202 of the rope pulley 2. The stator frame 601 is rotatably connected to the axle 202 of the rope pulley 2 via bearings. Multiple winding posts 602 are evenly distributed around the outer side wall of the stator frame 601. The winding posts 602 are bolted to the stator frame 601. A coil 603 is wound around the winding post 602. Multiple permanent magnets 604 are evenly distributed around the edge of the sheave body 201 of the rope pulley 2. The permanent magnets 604 correspond to the winding posts 602. There are two counterweight upper beams 5, which are fixedly installed on the top of the frame 1. Multiple strain gauges 7 are evenly distributed on each counterweight upper beam 5. The accuracy of the strain gauges 7 is 0.2%FS.

[0025] The strain gauge 7 is a component composed of a sensitive grid and other elements used to measure strain. When the weight of the counterweight 3 installed on the frame 1 changes, the strain gauge 7 undergoes mechanical deformation under the gravity of the counterweight 3, causing its resistance value to change accordingly. Therefore, the weight of the counterweight 3 can be monitored by the strain gauge 7. The power generation module 6 supplies power to the strain gauge 7 through self-generated power. Specifically, when the car is raised or lowered, the traction machine drives the rope wheel 2 to rotate through the wire rope. The permanent magnet 604 rotates with the rope wheel 2, and the magnetic field generated by the permanent magnet 604 rotates accordingly. At this time, the coil 603 on the stator frame 601 is located in the rotating magnetic field. By cutting the magnetic field lines through the current, an induced electromotive force, i.e., electrical energy, is generated. The electrical energy is stored in the battery 11, and the battery 11 supplies power to the strain gauge 7.

[0026] By combining the strain gauge 7 and the power generation module 6, the strain gauge 7 is used to monitor the weight of the counterweight 3, and the power generation module 6 generates its own power to supply the strain gauge 7. In the whole process, the mechanical energy of the rope wheel 2 is converted into electrical energy to achieve self-sufficiency in electrical energy without the need for an external power source, so that the external power source can be effectively output to the traction machine.

[0027] Among them, the permanent magnet 604 is a rare earth neodymium iron boron permanent magnet, which is magnetically installed on the wheel body 201 of the rope wheel 2; the winding post 602 is an I-shaped magnetic silicon steel; the coil 603 is a copper wire, and its surface is coated with a high-temperature resistant insulating coating to provide insulation and high-temperature resistance.

[0028] Furthermore, a nylon clip 605 is installed between two adjacent permanent magnets 604; by setting the nylon clip 605, on the one hand, a single permanent magnet 604 can be limited, and on the other hand, all permanent magnets 604 can be formed into a whole, improving the magnetic attraction effect and preventing the permanent magnets 604 from shifting and detaching from the rope wheel 2 under the action of centrifugal force.

[0029] Furthermore, such as Figure 3 As shown, a temperature sensor 8 is installed on the stator frame 601 at the position corresponding to the shaft 202 of the pulley 2; by setting the temperature sensor 8, the temperature around the coil 603 can be monitored.

[0030] Furthermore, such as Figure 4 As shown, the wheel body 201 of the rope pulley 2 has a first heat dissipation hole 203 corresponding to the winding post 602; by setting the first heat dissipation hole 203, air convection is used to dissipate heat from the coil 603, thereby improving the heat dissipation effect of the coil 603.

[0031] Furthermore, such as Figure 3 As shown, the stator frame 601 has a wire hole 606; by setting the wire hole 606, wires can be routed, which facilitates the connection of the coil 603.

[0032] The counterweight upper beam 5 has a king-shaped structure, a bridge type, with strain gauges 7 symmetrically installed on both sides of the counterweight upper beam 5, such as... Figure 5 As shown, four mounting slots 501 for mounting strain gauges 7 are provided on both the front and rear surfaces of the counterweight upper beam 5, and are arranged symmetrically around the center of the counterweight upper beam 5. That is, two mounting slots 501 are provided on each side of the front surface of the counterweight upper beam 5. Each mounting slot 501 is equipped with a strain gauge 7. A second heat dissipation hole 502 is provided at the bottom of each mounting slot 501. Air convection is achieved through the second heat dissipation hole 502 to dissipate heat from the strain gauge 7. The same applies to the rear surface of the counterweight upper beam 5.

[0033] Furthermore, a fulcrum 503 is provided at the position of the axle 202 of the sheave 2 corresponding to the counterweight upper beam 5, and a U-bolt 9 is installed at the position of the fulcrum 503 corresponding to the counterweight upper beam 5. The axle 202 of the sheave 2 is rotatably connected to the fulcrum 503 and the U-bolt 9. Through the cooperation of the fulcrum 503 and the U-bolt 9, on the one hand, the combination of the fulcrum 503 and the U-bolt 9 forms a bushing-like structure, which can limit the axle 202 of the sheave 2 in the bushing and rotatably connect to the bushing; on the other hand, it facilitates the installation of the sheave 2 and ensures the strength of the counterweight upper beam 5.

[0034] Furthermore, such as Figure 2 As shown, a controller 10, a battery 11, and an antenna 12 are mounted on the frame 1. The controller 10 is electrically connected to the strain gauge 7, the coil 603, the battery 11, and the antenna 12. The controller 10 can control the electrical energy generated by the power generation module 6 to be stored in the battery 11, and control the electrical energy in the battery 11 to power the strain gauge 7 and the coil 603 of the power generation module 6. At the same time, the controller 10 integrates data acquisition function. Through electrical connection with the strain gauge 7, the data collected by the strain gauge 7 can be transmitted to the controller 10. By setting the antenna 12, the data collected by the controller 10 can be transmitted wirelessly, and the controller 10 can be controlled wirelessly. The battery 11 is a 3.7V 1000mAh sodium-ion battery used for storing electrical energy and powering the system. It can work independently for more than 30 days without charging. The power generation module 6 outputs AC power with a voltage of 12V and a current of 1000mA.

[0035] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An elevator counterweight frame, comprising a frame (1), sheaves (2), and counterweight blocks (3), wherein the frame (1) has a receiving space (4) for placing the counterweight blocks (3), and at least one sheave (2) is provided, wherein the sheave (2) is mounted on a counterweight upper beam (5) at the top of the frame (1) and is rotatably connected to the counterweight upper beam (5), characterized in that, A power generation module (6) is provided on one side of the wheel body (201) of the rope wheel (2). The power generation module (6) includes a stator frame (601). The stator frame (601) is fitted onto the wheel axle (202) of the rope wheel (2) and is rotatably connected to the wheel axle (202) of the rope wheel (2). Multiple winding posts (602) are evenly distributed around the outer side wall of the stator frame (601). A coil (603) is wound around the winding post (602). Multiple permanent magnets (604) are evenly distributed around the edge of the wheel body (201) of the rope wheel (2). The permanent magnets (604) correspond to the winding posts (602). Strain gauges (7) are installed on the counterweight upper beam (5). The power generation module (6) supplies power to the strain gauge (7) through self-generated power; A temperature sensor (8) is installed on the stator frame (601) at the position of the pulley (202) axle (202), and the temperature sensor (8) is used to monitor the temperature around the coil (603); The counterweight upper beam (5) is a king-shaped structure and a bridge type. The front and rear surfaces of the counterweight upper beam (5) are provided with four mounting slots (501) for mounting strain gauges (7), which are symmetrically arranged around the center of the counterweight upper beam (5). Each mounting slot (501) is equipped with a strain gauge (7). Each mounting slot (501) has a second heat dissipation hole (502) at the bottom. The second heat dissipation hole (502) is used to achieve air convection and dissipate heat from the strain gauge (7). The counterweight upper beam (5) is provided with a fulcrum (503) at the position of the axle (202) of the rope wheel (2). A U-bolt (9) is installed at the position of the fulcrum (503) of the counterweight upper beam (5). The axle (202) of the rope wheel (2) is rotatably connected to the fulcrum (503) and the U-bolt (9). The fulcrum (503) and the U-bolt (9) are combined to form a bushing structure, which can limit the axle (202) of the rope wheel (2) in the bushing and rotatably connect the bushing, while ensuring the strength of the counterweight upper beam (5).

2. The elevator counterweight frame according to claim 1, characterized in that, A nylon clip (605) is installed between two adjacent permanent magnets (604).

3. The elevator counterweight frame according to claim 1, characterized in that, The wheel body (201) of the sheave (2) has a first heat dissipation hole (203) corresponding to the winding post (602).

4. The elevator counterweight frame according to claim 1, characterized in that, The frame (1) is equipped with a controller (10), a battery (11) and an antenna (12).

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