Counterweight device of elevator and laminated counterweight pressing piece of counterweight device

Abstract

The invention discloses a counterweight device of an elevator and a stacked counterweight pressing piece of the counterweight device, and relates to the technical field of elevator counterweights. A first disc is in chain transmission connection with an upper first roller and a lower first roller on the left side, and a second disc is in chain transmission connection with an upper second roller and a lower second roller on the right side; a first magnetic pin and a second magnetic pin are inserted into a first disc and a second disc in a sliding mode respectively, the counterweight is driven to move substantially when the counterweight device ascends and descends abnormally and rapidly, so that magnets installed at the upper end and the lower end of the counterweight attract the first magnetic pin magnetically and repel the second magnetic pin magnetically; the first magnetic pin and the second magnetic pin move to limit rotation of the first disc and the second disc respectively, so that rotation of the first roller and the second roller is limited, rolling friction of the counterweight device in the guide rail is changed into sliding friction, friction resistance is increased, auxiliary braking is achieved, and the service life of the counterweight device is prolonged. And the safety of the elevator in the running process can be effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator counterweights, and in particular to an elevator counterweight device and a stacked counterweight pressing piece thereof. Background Art

[0002] The counterweight device is an important component of the elevator operation system. By reasonably configuring the weight and forming a balanced relationship with the elevator car, it can reduce the driving force required by the traction machine during the operation of the elevator, thereby achieving energy conservation and consumption reduction, and improving the stability and comfort of the elevator operation.

[0003] In actual operation scenarios, the counterweight devices under the existing technology have exposed many drawbacks. In particular, their limitations are more prominent when the elevator car suddenly rises or falls abnormally quickly. When the elevator car rises or falls rapidly due to traction system failure, control system failure or other unexpected factors, the existing elevator counterweight devices often cannot play the role of auxiliary braking. This is mainly because the conventional counterweight device only plays a role in maintaining balance when the elevator is operating normally, so that the structural design of the counterweight device does not make special considerations for the braking requirements under abnormal working conditions, which makes it difficult for the counterweight device to intervene in the abnormal rise and fall of the car through its own structure and operation mechanism, and cannot perform auxiliary braking when the elevator car rises or falls abnormally quickly.

[0004] To this end, a counterweight device of an elevator and a stacked counterweight pressing member thereof are proposed to solve some problems existing in the above-mentioned prior art. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that the elevator counterweight device is difficult to intervene in the abnormal lifting of the car through its own structure and operating mechanism, resulting in its inability to perform auxiliary braking when the elevator car is lifted or lowered abnormally and quickly, and to propose an elevator counterweight device and its stacked counterweight pressing part.

[0006] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions: A counterweight device of an elevator and a stacked counterweight pressing member thereof, comprising two symmetrical guide rails, a frame movably mounted in the guide rails, a first longitudinal rod fixed between the front and rear frames, a guide mechanism located in the guide rails mounted on the frame, the guide mechanism comprising a first inner gear ring mounted in the middle of the outer end wall of the frame, and a first swing arm extending to the upper left and lower left is fixed on the first inner gear ring, a first roller is rotatably mounted at the end of the first swing arm, a first disc is movably sleeved on the first inner gear ring, and the first disc is connected to the first roller chain transmission, and the first disc A first magnetic pin is inserted in the inner sliding manner, a second inner gear ring is installed on the side of the first inner gear ring away from the frame, and a second swing arm extending to the upper right and lower right is fixed on the second inner gear ring, a second roller is rotatably installed at the end of the second swing arm, a second disc is movably sleeved on the second inner gear ring, and the second disc is chain-driven with the second roller, a second magnetic pin is inserted in the second disc, a balancing block is slidably installed in the frame, and straight springs for elastically supporting the balancing block are installed on the upper and lower sides of the balancing block, and magnets are fixed on the upper and lower ends of the balancing block.

[0007] Preferably, the first magnetic pin and the magnet are magnetically attracted to each other, and the second magnetic pin and the magnet are magnetically repelled to each other.

[0008] Preferably, the edges of the first disk and the second inner gear ring are provided with insertion holes, the first magnetic pin and the second magnetic pin are respectively inserted into the corresponding insertion holes on the first disk and the second inner gear ring, and springs fixedly connected to the first magnetic pin and the second magnetic pin are respectively installed in the two insertion holes.

[0009] Preferably, the first inner gear ring is rotationally connected to the frame, the second inner gear ring is coaxially rotationally connected to the first inner gear ring, the frame is rotatably mounted with a first spline cylinder and a second spline cylinder movably inserted into the inner sides of the first and second inner gear rings, a first gear meshing with the first inner gear ring is fixed on the first spline cylinder, a second gear meshing with the second inner gear ring is fixed on the second spline cylinder, and the second gear meshes with the first gear, an energy supply mechanism is installed at the connection between the frame and the first longitudinal rod, and a power switching mechanism is arranged between the energy supply mechanism and the first spline cylinder and the second spline cylinder.

[0010] Preferably, the first gear does not mesh with the second internal gear ring, and the second gear does not mesh with the first internal gear ring.

[0011] Preferably, the energy supply mechanism includes a third internal gear ring rotatably installed in the end head of the first longitudinal rod, and a mainspring is fixedly connected to the third internal gear ring and the first longitudinal rod, a third magnetic pin arranged longitudinally is slidably inserted in the third internal gear ring, and the third magnetic pin is inserted in the end wall of the first longitudinal rod, the third magnetic pin is magnetically attracted to the magnet, and a third spline cylinder and a fourth spline cylinder inserted in the third internal gear ring are rotatably installed on the end wall of the frame, and a third gear meshing with the third internal gear ring is fixed on the third spline cylinder and the fourth spline cylinder.

[0012] Preferably, the power switching mechanism includes a first spline shaft movably inserted between the first spline cylinder and the third spline cylinder, and the first sleeve is rotatably sleeved on the outer side of the first spline shaft, a second spline shaft is movably inserted between the second spline cylinder and the fourth spline cylinder, and the second sleeve is rotatably sleeved on the outer side of the second spline shaft, a fourth gear is rotatably installed in the frame and is laterally inserted between the first sleeve and the second sleeve, racks meshing with the fourth gear are fixed on the first sleeve and the second sleeve, and a rack meshing with the fourth gear is also fixed in the balance block.

[0013] Preferably, a stacked counterweight pressing piece adapted for a counterweight device of an elevator has a second longitudinal rod fixed between the front and rear frames and located above the first longitudinal rod, a load-bearing beam is rotatably installed at the middle position of the first longitudinal rod, and a plurality of evenly distributed counterweight columns are vertically inserted in the load-bearing beam, the counterweight columns are arranged as a T-shaped structure, a pressure beam arranged above the first longitudinal rod and below the second longitudinal rod is slidably connected between the two frames, a vertically arranged screw rod is fixedly installed on the top of the pressure beam, a screw sleeve is rotatably installed on the second longitudinal rod, and the screw sleeve is threadedly screwed to the screw rod.

[0014] Preferably, the counterweight column is arranged as a hollow structure, a plug is screwed onto the top thread of the counterweight column, and a counterweight core is filled in the counterweight column.

[0015] Preferably, at least two screw rods are provided, and the plurality of screw rods are evenly distributed on the pressure beam, and the plurality of screw sleeves corresponding to the plurality of screw rods are connected by chain transmission.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the first disc is connected to the upper and lower first roller chains on the left side, the second disc is connected to the upper and lower second roller chains on the right side, and the first magnetic pin is slidably inserted into the inner edge position of the first disc, and the second magnetic pin is slidably inserted into the inner edge position of the second disc, and the balancing block is slidably installed in the frame through the upper and lower straight springs, so that when the elevator car drives the counterweight device to rise and fall abnormally quickly, the balancing block will be driven to move greatly in the frame, so that the magnets installed at the upper and lower ends of the balancing block are close to the first magnetic pin and the second magnetic pin, magnetically attracting the first magnetic pin and magnetically repelling the second magnetic pin, so that the first magnetic pin and the second magnetic pin respectively limit the rotation of the first disc and the second disc after moving, and then limit the rotation of the first roller and the second roller, so that the rolling friction of the counterweight device in the guide rail is changed to sliding friction, the friction resistance is increased, and auxiliary braking is realized, which can effectively improve the safety of the elevator during operation; 2. In the present invention, by meshing the first gear and the second gear, and meshing the first gear and the inner side of the first inner gear ring, and meshing the second gear and the inner side of the second inner gear ring, in cooperation with the energy supply mechanism and the power switching mechanism, when the counterweight device moves abnormally and rapidly upward, the first swing arm and the second swing arm located at the top move away from each other and expand outward in a V shape, and when the counterweight device moves abnormally and rapidly downward, the first swing arm and the second swing arm located at the bottom move away from each other, and the emergency braking effect in the corresponding direction can be further improved according to the abnormal moving direction; 3. In the present invention, the load-bearing beam is rotatably installed in the middle position of the first longitudinal rod, and a plurality of counterweight columns are slidably inserted into the load-bearing beam, so that after the staff moves up the pressure beam, the load-bearing beam can be driven to deflect to one side by rotation, which is convenient for the staff to disassemble, assemble and replace the counterweight column. At the same time, by setting the inside of the counterweight column as a hollow structure and screwing the plug thread onto the counterweight column, the staff can change the overall counterweight mass of the counterweight column by replacing counterweight cores of different densities, and the operation is flexible and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 A perspective view of the present invention; Figure 2 It is a stereoscopic view of the counterweight device of the present invention from a side perspective; Figure 3 This is a disassembled diagram of the guide mechanism and the first gear and the second gear of the present invention; Figure 4 It is a three-dimensional diagram of the balancing weight and the power switching mechanism of the present invention; Figure 5 This is a disassembled diagram of the energy supply mechanism and the power switching mechanism of the present invention; Figure 6 For the present invention Figure 1 A top view of the structure in the middle; Figure 7 For the present invention Figure 6 Sectional view at AA in the middle; Figure 8 For the present invention Figure 7 Enlarged view of point C in the middle; Fig. 9 For the present invention Figure 6 Sectional view at the middle BB; Fig.10 For the present invention Figure 1 Side view of the middle structure; Fig.11 For the present invention Fig.10Sectional view at DD in the middle; Fig.12 For the present invention Fig.11 Enlarged view of point E in the middle.

[0018] Serial number in the picture: 1. Guide rail; 2. Frame; 201. First longitudinal rod; 202. Second longitudinal rod; 203. Connecting seat; 3. first inner gear ring; 301. first swing arm; 302. first roller; 303. first disc; 304. first magnetic pin; 305. second inner gear ring; 306. second swing arm; 307. second roller; 308. second disc; 309. second magnetic pin; 4. Balance weight; 401. Straight spring; 402. Magnet; 5. first spline cylinder; 501. second spline cylinder; 502. first gear; 503. second gear; 6. third inner gear ring; 601. spring; 602. third magnetic pin; 603. third spline cylinder; 604. fourth spline cylinder; 605. third gear; 7, first spline shaft; 701, first sleeve; 702, second spline shaft; 703, second sleeve; 704, fourth gear; 8. Load-bearing beam; 801. Counterweight column; 802. Plug; 803. Counterweight core; 804. Pressure beam; 805. Screw rod; 806. Screw sleeve. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] Embodiment 1: This embodiment provides an elevator counterweight device and a stacked counterweight pressing member thereof, see Figure 1 - Fig.12Specifically, it includes two symmetrical guide rails 1, a frame 2 is movably installed in the guide rail 1, a first longitudinal rod 201 is fixed between the front and rear frames 2, and a second longitudinal rod 202 is located above the first longitudinal rod 201, a connecting seat 203 is fixed on the top of the second longitudinal rod 202, a guiding mechanism located in the guide rail 1 is installed on the frame 2, the guiding mechanism includes a first inner gear ring 3 installed in the middle position of the outer end wall of the frame 2, and a first swing arm 301 extending to the upper left and lower left is fixed on the first inner gear ring 3, a first roller 302 that fits the left end wall of the guide rail 1 is rotatably installed at the end of the first swing arm 301, a first disc 303 is movably sleeved on the first inner gear ring 3, and the first disc 303 is chain-drivenly connected to the first roller 302, and a longitudinally arranged first magnetic pin 3 is slidably inserted in the first disc 303 04, a second inner gear ring 305 is installed on the side of the first inner gear ring 3 away from the frame 2, and a second swing arm 306 extending to the upper right and lower right is fixed on the second inner gear ring 305, and a second roller 307 that fits the right end wall of the guide rail 1 is rotatably installed at the end of the second swing arm 306, a second disc 308 is movably sleeved on the second inner gear ring 305, and the second disc 308 is chain-drivenly connected to the second roller 307, a longitudinally arranged second magnetic pin 309 is slidably inserted in the second disc 308, a balancing block 4 is slidably installed in the frame 2, and straight springs 401 for elastically supporting the balancing block 4 are installed on the upper and lower sides of the balancing block 4, magnets 402 are fixed on the upper and lower ends of the balancing block 4, the first magnetic pin 304 and the magnet 402 are magnetically attracted to each other, and the second magnetic pin 309 and the magnet 402 are magnetically repelled from each other.

[0021] During the use of the device, the guide rail 1 is firmly installed in the elevator shaft, the connecting seat 203 is connected to the elevator car by a steel cable, the steel cable passes around the driving wheel arranged above the elevator shaft, the frame 2 and other structures arranged thereon constitute a counterweight device, when the elevator car is pulled upward, the counterweight device moves downward along the guide rail 1, and when the elevator car is pulled downward, the counterweight device moves upward along the guide rail 1, and the weight of the elevator car is balanced by the counterweight device. During the up and down movement of the counterweight device, the first roller 302 and the second roller 307 rotatably installed at the end position of the first swing arm 301 and the second swing arm 306 in the guiding mechanism roll and fit on the left and right end walls of the guide rail 1, and the rolling guidance can ensure the smooth and stable sliding of the counterweight device up and down in the guide rail 1.

[0022] In the counterweight device, since the upper and lower ends of the balance block 4 are fixedly connected to the inner end wall of the frame 2 by the straight spring 401, when the counterweight device is initially started and starts to move up and down, due to different accelerations, the balance block 4 will have a relative up and down offset in the frame 2. When the counterweight device moves upward, the initial acceleration of the frame 2 moving upward is greater than the initial acceleration of the balance block 4, and overweight will occur. In this state, the balance block 4 will move relatively downward in the frame 2. When the counterweight device moves downward, the initial acceleration of the frame 2 moving downward is greater than the initial acceleration of the balance block 4, and weightlessness will occur. In this state, the balance block 4 will move relatively upward in the frame 2. After the car and the counterweight device run at a uniform speed, the overweight and weightlessness phenomena disappear, the offset is released, and the balance block 4 will be reset to the middle position in the frame 2 under the elastic connection of the straight springs 401 on the upper and lower sides.

[0023] During the normal operation of the elevator, the elevator car moves up and down smoothly and stably. Accordingly, the counterweight device connected to the car will move up and down smoothly in the guide rail 1, so that in the initial process of the counterweight device moving up and down, the relative offset of the balance block 4 in the frame 2 is small. When the car moves up or down suddenly due to an abnormality during the operation of the elevator, the counterweight device will move down or up suddenly accordingly, which makes the acceleration of the frame 2 during abnormal movement much greater than the acceleration in the normal state, resulting in a large offset of the balance block 4 in the frame 2 during abnormal movement. This will cause the magnets 402 installed at the upper and lower ends of the balance block 4 to reach the middle position of the frame 2 corresponding to the first disc 303 and the second disc 308 due to the large movement of the balance block 4. The magnetic attraction of the first magnetic pin 304 and the magnetic repulsion of the second magnetic pin 309 by the magnet 402 cause the first magnetic pin 304 to move outside the first disc 303 and finally get stuck between the upper and lower first swing arms 301 outside the first inner gear ring 3. The second magnetic pin 309 moves outside the second disc 308 and finally gets stuck between the upper and lower second swing arms 306 outside the second inner gear ring 305, thereby restricting the rotation of the first disc 303 and the rotation of the second disc 308 respectively. In this state, the upper and lower first rollers 302 and the upper and lower second rollers 307 cannot rotate normally, thereby changing the rolling friction of the counterweight device in the guide rail 1 into sliding friction. During the abnormally rapid movement of the elevator car, the friction resistance between the counterweight device and the guide rail 1 is automatically increased to achieve auxiliary braking, which can effectively improve the safety of the elevator during operation.

[0024] In the specific implementation process, Figure 3 and Fig.12As shown, the edge positions of the first disk 303 and the second inner gear ring 305 are provided with insertion holes, and the first magnetic pin 304 and the second magnetic pin 309 are respectively inserted into the corresponding insertion holes on the first disk 303 and the second inner gear ring 305, and the two insertion holes are respectively installed with springs fixedly connected to the first magnetic pin 304 and the second magnetic pin 309. During the use of the device, the magnet 402 cannot move to the positions corresponding to the first disk 303 and the second disk 308. The magnet 402 cannot produce a magnetic effect on the first magnetic pin 304 and the second magnetic pin 309 due to the insufficient range of action. At this time, the first magnetic pin 304 and the second magnetic pin 309 are completely stored in the corresponding insertion holes through the elastic connection of the spring. When the elevator car rises and falls abnormally, causing the counterweight device to move rapidly , the magnet 402 moves to a position facing the first disk 303 and the second disk 308. At this time, since the distance between the magnet 402 and the first magnetic pin 304 and the second magnetic pin 309 is close, the magnet 402 can produce magnetic attraction to the first magnetic pin 304 and magnetic repulsion to the second magnetic pin 309, so that the first magnetic pin 304 and the second magnetic pin 309 can respectively restrict the rotation of the first disk 303 and the second disk 308 after moving. The first magnetic pin 304 and the second magnetic pin 309 are elastically connected by the spring in the corresponding socket, so that the first magnetic pin 304 and the second magnetic pin 309 can be stably and comprehensively received in the corresponding socket, thereby ensuring the stability of the rotation of the first disk 303 and the second disk 308 under normal conditions.

[0025] In the specific implementation process, Figure 3 - Figure 5 , Figure 8 and Fig.12 As shown, the first inner gear ring 3 is rotationally connected to the frame 2, the second inner gear ring 305 is coaxially rotationally connected to the first inner gear ring 3, and the frame 2 is rotatably installed with a first spline cylinder 5 and a second spline cylinder 501 that are movably inserted into the inner sides of the first inner gear ring 3 and the second inner gear ring 305, a first gear 502 meshing with the first inner gear ring 3 is fixed on the first spline cylinder 5, a second gear 503 meshing with the second inner gear ring 305 is fixed on the second spline cylinder 501, and the second gear 503 meshes with the first gear 502, the first gear 502 does not mesh with the second inner gear ring 305, and the second gear 503 does not mesh with the first inner gear ring 3, an energy supply mechanism is installed at the connection between the frame 2 and the first longitudinal rod 201, and a power switching mechanism is arranged between the energy supply mechanism and the first spline cylinder 5 and the second spline cylinder 501.

[0026] The energy supply mechanism includes a third inner gear ring 6 rotatably installed in the end of the first longitudinal rod 201, and a spring 601 is fixedly connected to the third inner gear ring 6 and the first longitudinal rod 201, a third magnetic pin 602 arranged longitudinally is slidably inserted in the third inner gear ring 6, and the third magnetic pin 602 is inserted in the end wall of the first longitudinal rod 201, the third magnetic pin 602 is magnetically attracted to the magnet 402, and a third spline cylinder 603 and a fourth spline cylinder 604 inserted in the third inner gear ring 6 are rotatably installed on the end wall of the frame 2, and a third gear 605 meshing with the third inner gear ring 6 is fixed on the third spline cylinder 603 and the fourth spline cylinder 604.

[0027] The power switching mechanism includes a first spline shaft 7 movably inserted between the first spline cylinder 5 and the third spline cylinder 603, and the first sleeve 701 is rotatably sleeved on the outer side of the first spline shaft 7, a second spline shaft 702 is movably inserted between the second spline cylinder 501 and the fourth spline cylinder 604, and the second sleeve 703 is rotatably sleeved on the outer side of the second spline shaft 702, a fourth gear 704 is rotatably installed in the frame 2 and is transversely inserted between the first sleeve 701 and the second sleeve 703, racks meshing with the fourth gear 704 are fixed on the first sleeve 701 and the second sleeve 703, and a rack meshing with the fourth gear 704 is also fixed in the balance block 4, and springs are connected between the first sleeve 701 and the second sleeve 703 and the inner end wall of the frame 2 to ensure the positional stability of the first sleeve 701 and the second sleeve 703.

[0028] During the operation of the device, a longitudinally arranged insertion hole is opened at the inner edge of the third inner gear ring 6, and the third magnetic pin 602 is slidably inserted into the insertion hole. A spring for elastically supporting the third magnetic pin 602 is installed in the insertion hole. Under the elastic support of the spring, the third magnetic pin 602 is inserted into the inner end wall of the first longitudinal rod 201. In this state, the third inner gear ring 6 cannot rotate, and the spring 601 installed between the third inner gear ring 6 and the inner end wall of the first longitudinal rod 201 is in a wound state for energy storage.

[0029] When the balancing block 4 moves up and down in the frame 2, the fourth gear 704 is driven to rotate by means of the meshing of the rack in the balancing block 4 and the fourth gear 704, and then by means of the meshing of the rack on the first sleeve 701 and the fourth gear 704, and the meshing of the rack on the second sleeve 703 and the fourth gear 704, when the fourth gear 704 rotates, the first sleeve 701 and the second sleeve 703 on the upper and lower sides thereof will move synchronously relative to each other, thereby driving the first spline shaft 7 and the second spline shaft 702 to move synchronously relative to each other. When the first spline shaft 7 is further inserted into the first spline cylinder 5 due to movement, the second spline shaft 702 The key shaft 702 will withdraw from the second spline cylinder 501. When the second spline shaft 702 is further inserted into the second spline cylinder 501 due to movement, the first spline shaft 7 will withdraw from the first spline cylinder 5. According to the direction of relative up and down movement of the balancing block 4 in the frame 2, the connection between the first spline shaft 7 and the first spline cylinder 5 is disconnected, or the connection between the second spline shaft 702 and the second spline cylinder 501 is disconnected. During the movement of the first spline shaft 7 and the second spline shaft 702, the first spline shaft 7 is always inserted in the third spline cylinder 603, and the second spline shaft 702 is always inserted in the fourth spline cylinder 604.

[0030] When the magnets 402 fixed at the upper and lower ends of the balance block 4 move to the middle position of the frame 2 due to the abnormality of the elevator, the distance between the magnet 402 and the third magnetic pin 602 is greatly approached. At this time, the magnet 402 can produce magnetic attraction to the third magnetic pin 602, driving the third magnetic pin 602 to move toward the magnet 402, and the third magnetic pin 602 is no longer inserted in the inner end wall of the first longitudinal rod 201. The rotation restriction of the third inner gear ring 6 is released, and the third inner gear ring 6 can rotate normally. In this state, the mainspring 601 elastically resets and expands, driving the third inner gear ring 6 to rotate. During the rotation of the third inner gear ring 6, with the help of the meshing of the third inner gear ring 6 and the third gear 605, the third spline cylinder 603 and the fourth spline cylinder 604 are driven to rotate synchronously in the same direction, thereby driving the first spline shaft 7 and the second spline shaft 702 to rotate in the same direction.

[0031] Based on the above structure, when the counterweight device moves upward abnormally fast, the balancing block 4 moves downward relatively in the frame 2, so that the first spline shaft 7 is further inserted into the first spline cylinder 5, and the second spline shaft 702 is withdrawn from the second spline cylinder 501. In this state, the rotational power provided by the energy supply mechanism is transmitted to the first spline cylinder 5 through the first spline shaft 7, driving the first gear 502 to rotate. With the meshing of the first gear 502 and the second gear 503, and the meshing of the first gear 502 and the inner side of the first inner gear ring 3, the second gear 502 is rotated. 03 and the inner side of the second inner gear ring 305 are meshed, driving the first inner gear ring 3 and the second inner gear ring 305 to rotate relative to each other, thereby driving the upper first swing arm 301 and the second swing arm 306 to move away from each other, so that the upper first swing arm 301 and the second swing arm 306 present a V-shaped outward expansion posture, thereby increasing the extrusion force applied by the upper first roller 302 and the second roller 307 on the inner end wall of the guide rail 1, thereby further increasing the friction resistance of the counterweight device when it moves abnormally fast upward, which can improve its auxiliary braking effect to a certain extent.

[0032] Similarly, when the counterweight device moves downward abnormally quickly, the balancing block 4 moves upward relatively in the frame 2, so that the first spline shaft 7 withdraws from the first spline cylinder 5, and the second spline shaft 702 is further inserted into the second spline cylinder 501. In this state, the rotational power provided by the energy supply mechanism is transmitted to the second spline cylinder 501 through the second spline shaft 702, driving the second gear 503 to rotate. Then, with the meshing of the first gear 502 and the second gear 503, and the meshing of the first gear 502 and the inner side of the first inner gear ring 3, the second gear The meshing of 503 and the inner side of the second inner gear ring 305 drives the first inner gear ring 3 and the second inner gear ring 305 to rotate relative to each other, thereby driving the first swing arm 301 and the second swing arm 306 below to move away from each other, so that the first swing arm 301 and the second swing arm 306 below present a V-shaped outward expansion posture, thereby increasing the squeezing force applied by the first roller 302 and the second roller 307 below on the inner end wall of the guide rail 1, thereby further increasing the friction resistance of the counterweight device when it moves abnormally fast downward, which can improve its auxiliary braking effect to a certain extent.

[0033] Embodiment 2: On the basis of embodiment 1, this embodiment also includes: a stacked counterweight pressing member adapted for the counterweight device of an elevator, a load-bearing beam 8 is rotatably installed at the middle position of the first longitudinal rod 201, and a plurality of evenly distributed counterweight columns 801 are vertically inserted in the load-bearing beam 8, and the counterweight columns 801 are arranged as a T-shaped structure, and a pressure beam 804 arranged above the first longitudinal rod 201 and below the second longitudinal rod 202 is slidably connected between the two frames 2, and a vertically arranged screw 805 is fixedly installed on the top of the pressure beam 804, a screw sleeve 806 is rotatably installed on the second longitudinal rod 202, and the screw sleeve 806 is threadedly screwed to the screw 805, at least two screws 805 are arranged, and the plurality of screws 805 are evenly distributed on the pressure beam 804, and the plurality of screw sleeves 806 corresponding to the plurality of screws 805 are chain-drivenly connected.

[0034] During the use of the device, the pressure beam 804 is firmly installed above the counterweight column 801, which is used to limit the counterweight column 801 and ensure the stability of the counterweight column 801 when inserted into the load-bearing beam 8. When the number of installed counterweight columns 801 needs to be reduced or replaced, the staff can twist the screw sleeve 806 to rotate, and with the help of the threaded connection between the screw sleeve 806 and the screw rod 805, drive the screw rod 805 to move upward in the screw sleeve 806, thereby driving the pressure beam 804 to move up for adjustment. In this state, the pressure beam 804 releases the pressing restriction on the counterweight column 801, and then the staff can drive the load-bearing beam 8 to deflect to one side by rotation, which is convenient for the staff to disassemble, assemble and replace the counterweight column 801. After the disassembly, assembly and replacement of the counterweight column 801 is completed, the staff will straighten the load-bearing beam 8, and the reverse rotation of the screw sleeve 806 can drive the pressure beam 804 to press on the counterweight column 801 again, which is convenient to operate.

[0035] By providing at least two screw rods 805, the up and down lifting adjustment of the pressure beam 804 is made more stable. At the same time, by connecting multiple screw sleeves 806 through chain transmission, multiple screw sleeves 806 can rotate synchronously during the adjustment of the pressure beam 804, which is beneficial to ensure the balance and stability of the up and down adjustment of the pressure beam 804.

[0036] In the specific implementation process, Figure 7 As shown, the counterweight column 801 is configured as a hollow structure, the top thread of the counterweight column 801 is screwed with a plug 802, and the counterweight column 801 is filled with a counterweight core 803. During actual use, the staff can open the hollow structure in the counterweight column 801 by rotating the plug 802, and by replacing the counterweight core 803 with different densities, the weight of a single counterweight core 803 can be flexibly adjusted, and the total weight of many counterweight columns 801 can be flexibly changed, and the operation is flexible and convenient.

[0037] Specifically, the working principle and operation method of the present invention are as follows: When the elevator car connected with the device is operating normally, the first roller 302 and the second roller 307 are attached to the inner end wall of the guide rail 1 and can roll smoothly, thereby ensuring the smooth stability of the counterweight device when it moves up and down. When the elevator car is abnormally fast and lifted, the balance block 4 is greatly offset in the frame 2, and the magnet 402 moves to a position where it magnetically attracts the first magnetic pin 304 and magnetically repels the second magnetic pin 309, driving the first magnetic pin 304 and the second magnetic pin 309 to be removed from the first disc 303 and the second disc 308 respectively, restricting the rotation of the first disc 303 and the second disc 308, thereby preventing the first roller 302 and the second roller 307 from rotating normally, converting rolling friction into sliding friction, increasing the friction resistance between the counterweight device and the guide rail 1, and realizing auxiliary braking during abnormal lifting; Synchronously, the magnet 402 moves to a position where it magnetically attracts the third magnetic pin 602. With the help of the rotation restriction of the third inner gear ring 6, the mainspring 601 is elastically released to drive the third inner gear ring 6 to rotate. Then, the power switching mechanism transmits the rotational power to the first spline cylinder 5 or the second spline cylinder 501 according to the direction of the abnormally rapid lifting of the counterweight device. When the counterweight device moves abnormally upward rapidly, the upper first roller 302 and the second roller 307 are driven away from each other. When the counterweight device moves abnormally downward rapidly, the lower first roller 302 and the second roller 307 are driven away from each other. According to the direction of abnormal movement, the emergency braking effect in the corresponding direction is further enhanced. When disassembling and replacing the counterweight column 801, the staff rotates the screw sleeve 806 to make the screw 805 drive the pressure beam 804 to move upward, thereby releasing the pressure on the counterweight column 801, and then tilts the load-bearing beam 8 to one side by rotation, so as to facilitate the convenient disassembly and assembly of the counterweight column 801. The staff can change the overall counterweight mass of the counterweight column 801 by replacing the counterweight core 803 with different densities, and the operation is flexible and convenient.

[0038] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A counterweight device for an elevator, comprising two symmetrical guide rails (1), characterized in that: A frame (2) is movably mounted in the guide rail (1), a first longitudinal rod (201) is fixed between the front and rear frames (2), a guide mechanism located in the guide rail (1) is mounted on the frame (2), the guide mechanism comprises a first inner gear ring (3) mounted in the middle of the outer end wall of the frame (2), a first swing arm (301) extending to the upper left and lower left is fixed on the first inner gear ring (3), a first roller (302) is rotatably mounted at the end of the first swing arm (301), a first disc (303) is movably sleeved on the first inner gear ring (3), and the first disc (303) is chain-drivenly connected to the first roller (302), a first magnetic pin (304) is slidably inserted in the first disc (303), and the first inner gear ring (303) is rotatably mounted on the end of the first swing arm (301). (3) A second inner gear ring (305) is installed on the side away from the frame (2), and a second swing arm (306) extending to the upper right and lower right is fixed on the second inner gear ring (305), a second roller (307) is rotatably installed at the end of the second swing arm (306), a second disc (308) is movably sleeved on the second inner gear ring (305), and the second disc (308) is chain-drivenly connected to the second roller (307), a second magnetic pin (309) is slidably inserted in the second disc (308), a balancing block (4) is slidably installed in the frame (2), and straight springs (401) for elastically supporting the balancing block (4) are installed on both upper and lower sides of the balancing block (4), and magnets (402) are fixed on both upper and lower ends of the balancing block (4).

2. The counterweight device of an elevator according to claim 1, characterized in that: The first magnetic pin (304) and the magnet (402) are magnetically attracted to each other, and the second magnetic pin (309) and the magnet (402) are magnetically repelled from each other.

3. The counterweight device of an elevator according to claim 2, characterized in that: Insertion holes are provided at the edges of the first disk (303) and the second inner gear ring (305); the first magnetic pin (304) and the second magnetic pin (309) are respectively inserted into the corresponding insertion holes on the first disk (303) and the second inner gear ring (305); and springs fixedly connected to the first magnetic pin (304) and the second magnetic pin (309) are respectively installed in the two insertion holes.

4. The counterweight device of an elevator according to claim 1, characterized in that: The first inner gear ring (3) is rotatably connected to the frame (2), the second inner gear ring (305) is coaxially rotatably connected to the first inner gear ring (3), a first spline cylinder (5) and a second spline cylinder (501) movably inserted into the inner sides of the first inner gear ring (3) and the second inner gear ring (305) are rotatably mounted on the frame (2), a first gear (502) meshing with the first inner gear ring (3) is fixed on the first spline cylinder (5), a second gear (503) meshing with the second inner gear ring (305) is fixed on the second spline cylinder (501), and the second gear (503) meshes with the first gear (502), an energy supply mechanism is mounted at the connection between the frame (2) and the first longitudinal rod (201), and a power switching mechanism is arranged between the energy supply mechanism and the first spline cylinder (5) and the second spline cylinder (501).

5. The counterweight device of an elevator according to claim 4, characterized in that: The first gear (502) does not mesh with the second inner gear ring (305), and the second gear (503) does not mesh with the first inner gear ring (3).

6. The counterweight device of an elevator according to claim 4, characterized in that: The energy supply mechanism comprises a third inner gear ring (6) rotatably mounted in the end of the first longitudinal rod (201), and a spring (601) is fixedly connected in the third inner gear ring (6) and the first longitudinal rod (201), a third magnetic pin (602) arranged longitudinally is slidably inserted in the third inner gear ring (6), and the third magnetic pin (602) is inserted in the end wall of the first longitudinal rod (201), the third magnetic pin (602) is magnetically attracted to the magnet (402), and a third spline cylinder (603) and a fourth spline cylinder (604) inserted in the third inner gear ring (6) are rotatably mounted on the end wall of the frame (2), and a third gear (605) meshing with the third inner gear ring (6) is fixed on both the third spline cylinder (603) and the fourth spline cylinder (604).

7. The counterweight device of an elevator according to claim 4, characterized in that: The power switching mechanism comprises a first spline shaft (7) movably inserted between the first spline cylinder (5) and the third spline cylinder (603), and a first sleeve (701) is rotatably sleeved on the outer side of the first spline shaft (7), a second spline shaft (702) is movably inserted between the second spline cylinder (501) and the fourth spline cylinder (604), and a second sleeve (703) is rotatably sleeved on the outer side of the second spline shaft (702), a fourth gear (704) is rotatably installed in the frame (2) and is transversely inserted between the first sleeve (701) and the second sleeve (703), a rack meshing with the fourth gear (704) is fixed on both the first sleeve (701) and the second sleeve (703), and a rack meshing with the fourth gear (704) is also fixed in the balancing block (4).

8. A stacked counterweight pressing member adapted for the counterweight device of an elevator according to any one of claims 1 to 7, characterized in that: A second longitudinal rod (202) located above the first longitudinal rod (201) is fixed between the front and rear frames (2); a load-bearing beam (8) is rotatably mounted at the middle position of the first longitudinal rod (201); a plurality of evenly distributed counterweight columns (801) are vertically inserted into the load-bearing beam (8); the counterweight columns (801) are arranged in a T-shaped structure; a pressure beam (804) arranged above the first longitudinal rod (201) and below the second longitudinal rod (202) is slidably connected between the two frames (2); a vertically arranged screw rod (805) is fixedly mounted on the top of the pressure beam (804); a screw sleeve (806) is rotatably mounted on the second longitudinal rod (202); and the screw sleeve (806) is threadedly screwed to the screw rod (805).

9. The stacked counterweight pressing member adapted for the counterweight device of an elevator according to claim 8, characterized in that: The counterweight column (801) is provided with a hollow structure, a plug (802) is screwed onto the top end of the counterweight column (801), and a counterweight core (803) is filled in the counterweight column (801).

10. The stacked counterweight pressing member adapted for the counterweight device of an elevator according to claim 8, characterized in that: At least two screw rods (805) are provided, and the plurality of screw rods (805) are evenly distributed on the pressure beam (804), and the plurality of screw sleeves (806) corresponding to the plurality of screw rods (805) are connected by chain transmission.

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