Efficient buffer for elevator safety and working method thereof

Abstract

The invention discloses an efficient buffer for elevator safety and a working method thereof, and relates to the technical field of elevator safety, the efficient buffer comprises a bottom pier, a movable pier, a polyurethane buffer and a buffer hydraulic rod, a position control structure is installed on the bottom pier, and the polyurethane buffer is fixed to the upper surface of a first base; a limiting structure is arranged on the outer side of the polyurethane buffer, a second base is arranged on the inner side of the first base, a buffer hydraulic rod is fixed to the upper surface of the second base, an angle deviation monitoring structure is installed in the bearing plate, and a safety switch triggering structure is arranged on the right side of the buffer hydraulic rod. According to the efficient buffer for elevator safety and the working method of the efficient buffer, it is guaranteed that the center deviation of the buffer and the lift car is kept within 0-2 degrees, the lift car is better buffered, damage to the buffer when the lift car falls is avoided, deviation of the polyurethane buffer is avoided, the buffering effect is guaranteed, a safety switch can be triggered in time, and the safety switch can be turned on and turned off conveniently.

Description

Technical Field

[0001] The invention relates to the technical field of elevator safety, and in particular to a high-efficiency buffer for elevator safety and a working method thereof. Background Art

[0002] The elevator buffer is one of the safety components of the elevator pit. The elevator buffer is divided into spring buffer, polyurethane buffer and hydraulic buffer. It is the last insurance of the elevator. When other safety devices of the elevator cannot stop the out-of-control car, the buffer is used to absorb kinetic energy to protect the car and passengers. The Chinese invention patent with announcement number CN118992755A discloses a hydraulic buffer for elevator safety braking and a buffering method thereof, comprising a base, a support tube welded on the upper end of the base, a buffer tube plugged and installed in the middle of the support tube, a mounting mechanism, the mounting mechanism is symmetrically arranged at the left and right ends of the support tube, and the mounting mechanism is used to install and position the support tube and the buffer tube, and a heat dissipation mechanism, the heat dissipation mechanism is symmetrically arranged on the left and right sides of the outer tube. The hydraulic buffer for elevator safety braking and the buffering method thereof facilitate stable installation and disassembly and maintenance of the buffer, can assist in supporting and reinforcing the entire buffer, further improve the stability of the buffer during use, and combined with the setting of the heat dissipation mechanism, can assist in more efficiently dissipating the heat generated by the buffer during use, protect the buffer, and thus extend the actual service life of the buffer; However, the existing high-efficiency buffers for elevator safety have the following problems: 1. When the load eccentrically impacts the buffer, it will damage the buffer and affect the buffering effect. When using it, it is necessary to ensure that the buffer is aligned with the center of the car. However, due to the long-term use of one side of the car to transport heavy objects, or other reasons, the car will be offset. It is impossible to ensure that the deviation between the buffer and the car is within a safe range, and the car cannot be better buffered, and damage to the buffer cannot be avoided when the car falls; 2. When the polyurethane buffer and the buffer pressure rod are pressed down, the polyurethane buffer will deviate, affecting the buffering effect; 3. During the buffering process, it is inconvenient to open and close the safety switch. The Chinese utility model with the authorization announcement number CN220950717U proposes an elevator oil pressure buffer switch trigger device and a buffer, which avoids the problem that the contact rod of the existing buffer switch trigger device is easily twisted and deformed and fails. However, after the buffer is reset, it is inconvenient to disconnect the safety switch. Therefore, we propose an efficient buffer for elevator safety and its working method to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a high-efficiency buffer for elevator safety and a working method thereof, so as to solve the problem of the existing high-efficiency buffer for elevator safety proposed in the above-mentioned background technology. When the load eccentrically impacts the buffer, the buffer will be damaged and the buffering effect will be affected. When in use, it is necessary to ensure that the buffer is aligned with the center of the car. However, due to the long-term use of one side of the car to transport heavy objects, or other reasons, the car will be offset, and it cannot be ensured that the deviation between the buffer and the car is within a safe range. The car cannot be better buffered and damage to the buffer when the car falls cannot be avoided. When the polyurethane buffer and the buffer pressure rod are pressed down, the polyurethane buffer will be offset, affecting the buffering effect. During the buffering process, it is inconvenient to open and close the safety switch.

[0004] To achieve the above object, the present invention provides the following technical solution: an efficient buffer for elevator safety, comprising a bottom pier, a movable pier, a polyurethane buffer and a buffer pressure rod: A position control structure is installed on the bottom pier, and the position control structure includes a movable cavity, a control hydraulic rod, a top plate, a rectangular block, a movable pier, a rectangular cavity, a reinforcement hydraulic rod and an extrusion block. The inside of the bottom pier is provided with an movable cavity, and the inside of the movable cavity is fixed with a control hydraulic rod, the output end of the control hydraulic rod is fixed with a top plate, and a rectangular block is arranged on the inner side of the top plate, the upper surface of the rectangular block is fixed with the movable pier, and the outer end of the movable pier is provided with a rectangular cavity, the top end of the column fixed on the upper surface of the bottom pier is transversely fixed with a reinforcement hydraulic rod, and the output end of the reinforcement hydraulic rod is fixed with an extrusion block; A first base is fixed on the top of the movable pier by screws, a polyurethane buffer is fixed on the upper surface of the first base, a limiting structure is arranged on the outer side of the polyurethane buffer, the limiting structure includes a first limiting groove, a second limiting groove and a limiting rod, the first limiting groove is opened inside the movable pier, the second limiting groove is opened inside the first base, and a limiting rod is arranged on the outer side of the polyurethane buffer; A second base is provided on the inner side of the first base, and a buffer hydraulic rod is fixed on the upper surface of the second base, the second base is fixedly connected to the movable pier by screws, a spring is provided on the outer side of the top end of the buffer hydraulic rod, and a receiving plate is fixed on the upper surface of the buffer hydraulic rod, an angle deviation monitoring structure is installed inside the receiving plate, a safety switch triggering structure is provided on the right side of the buffer hydraulic rod, the safety switch triggering structure includes a limiting block, a vertical rod, a gear ring, a screw rod, an L-shaped rod and a mounting plate, a limiting block is fixed on the right side surface of the buffer hydraulic rod, and a vertical rod passes through the inside of the limiting block, a gear ring is provided on the inner side of the vertical rod, and a screw rod is threadedly connected to the inside of the gear ring, an L-shaped rod passes through the inside of the screw rod, mounting plates are provided on the front and rear ends of the gear ring, a safety switch is provided on the front side of the gear ring, and a control panel is installed on the front side of the pier.

[0005] The above technical solution is adopted to ensure that the center deviation between the buffer and the car is kept within 0-2°, which can better cushion the car and avoid damage to the buffer when the car falls, avoid the deviation of the polyurethane buffer, ensure the cushioning effect, and be able to trigger the safety switch in time, making it easy to open and close the safety switch.

[0006] Preferably, the control hydraulic rod is installed on the front, rear, left and right inner walls of the movable chamber.

[0007] Preferably, the extrusion block is located inside the rectangular cavity, and the rectangular cavity is opened at an equal angle at the outer end of the movable pier.

[0008] Preferably, the upper surface of the limiting rod is flush with the upper surface of the receiving plate, and the top end of the limiting rod is inserted into the top end of the polyurethane buffer.

[0009] Preferably, the L-shaped rod, the mounting plate and the safety switch are all fixedly connected to the buffer hydraulic rod.

[0010] Preferably, the bottom end of the vertical rod is in a sawtooth structure, and the bottom end of the vertical rod is meshingly connected with the gear ring.

[0011] Preferably, the gear ring is rotatably connected to the mounting plate.

[0012] A working method of a high-efficiency buffer for elevator safety, comprising the following steps: Step 1: The position of the middle part of the car is detected by the angle deviation monitoring structure. When the car deviates, the control panel starts the position control structure to adjust the positions of the rectangular block, the movable pier, the polyurethane buffer and the buffer pressure rod so that the deviation between the center of the polyurethane buffer and the buffer pressure rod and the center of the car is controlled within 0-2°; Step 2: When the car falls downward, the car presses the polyurethane buffer, the buffer pressure rod and the spring, and the kinetic energy of the car falling is absorbed by the polyurethane buffer, the buffer pressure rod and the spring. When the urethane buffer is compressed, the position of the urethane buffer is limited by the limiting structure to prevent the urethane buffer from deflecting; Step 3: When the plunger of the buffer hydraulic rod moves downward, the safety switch triggering structure triggers the safety switch, the limiting block moves downward, the gear ring rotates, and the screw moves forward to activate the safety switch and disconnect the power supply of the elevator; Step 4: When the limiting block moves upward to the initial position, the rotation of the gear ring drives the screw to move backward to the initial position, and the power of the elevator is turned on.

[0013] Compared with the prior art, the invention has the following beneficial effects: the elevator safety high-efficiency buffer and the working method thereof ensure that the center deviation between the buffer and the car is kept within 0-2°, better buffer the car and avoid damage to the buffer when the car falls, avoid the polyurethane buffer from deflecting, ensure the buffering effect, and can trigger the safety switch in time, so as to facilitate opening and closing the safety switch; 1. The angle deviation monitoring structure detects the position of the middle part of the car. When the car deviates, the position of the polyurethane buffer and the buffer hydraulic rod is adjusted through the position control structure composed of the movable cavity, the control hydraulic rod, the top plate, the rectangular block, the movable pier, the rectangular cavity, the reinforcement hydraulic rod and the extrusion block, so that the deviation between the center of the polyurethane buffer and the buffer hydraulic rod and the center of the car is controlled within 0-2°; 2. Use a polyurethane buffer, a buffer pressure rod and a spring combination to buffer the falling elevator car. During the compression of the polyurethane buffer, the polyurethane buffer is limited by a limiting rod to avoid the polyurethane buffer from shifting and ensure the buffering effect; 3. When the plunger of the buffer hydraulic rod moves downward, the safety switch is triggered, the limiting block moves downward, the gear ring rotates, and the screw moves forward to start the safety switch, disconnecting the power supply of the elevator host. After the vertical rod is reset, the safety switch is turned off and the power supply of the elevator host is turned on. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front axial structure of the present invention; Figure 2 This is a schematic diagram of the axial side section structure of the present invention; Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle; Figure 4 This is a schematic diagram of the split structure of the safety switch trigger structure of the present invention; Figure 5 This is a schematic diagram of the axial side structure of the bottom pier of the present invention; Figure 6 This is a schematic diagram of the connection structure between the limiting rod and the movable pier of the present invention; Figure 7 This is a schematic diagram of the first axis side structure of the safety switch trigger structure of the present invention; Figure 8 This is a schematic diagram of the second axis side structure of the safety switch trigger structure of the present invention; Fig. 9 This is a schematic diagram of the axial side structure of the polyurethane buffer of the present invention; Fig.10 This is a schematic diagram of the axial structure of the first base of the present invention; Fig.11 It is a schematic diagram of the back axial structure of the present invention.

[0015] In the figure: 1. bottom pier; 2. movable cavity; 3. control hydraulic rod; 4. top plate; 5. rectangular block; 6. movable pier; 7. rectangular cavity; 8. reinforcement hydraulic rod; 9. extrusion block; 10. first limiting groove; 11. first base; 12. polyurethane buffer; 13. second limiting groove; 14. limiting rod; 15. second base; 16. buffer hydraulic rod; 17. spring; 18. receiving plate; 19. limiting block; 20. vertical rod; 21. gear ring; 22. screw rod; 23. L-shaped rod; 24. mounting plate; 25. safety switch; 26. control panel; 27. angle deviation monitoring structure. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Example 1: Please refer to Figure 1 , Figure 2 , Figure 5 and Fig.11 , the existing elevator safety high-efficiency buffer, when the load eccentrically impacts the buffer, the buffer will be damaged and the buffer effect will be affected. When using it, it is necessary to ensure that the buffer is aligned with the center of the car. However, due to the long-term use of one side of the car to transport heavy objects, or other reasons, the car will be offset, and it is not possible to ensure that the deviation between the buffer and the car is within a safe range, and the car cannot be better buffered. It is impossible to avoid damage to the buffer when the car falls. In order to solve this technical problem, this embodiment discloses the following technical content; A high-efficiency buffer for elevator safety, a position control structure is installed on a bottom pier 1, the position control structure includes a movable cavity 2, a control hydraulic rod 3, a top plate 4, a rectangular block 5, a movable pier 6, a rectangular cavity 7, a reinforcement hydraulic rod 8 and an extrusion block 9, the bottom pier 1 is provided with an movable cavity 2, and the inside of the movable cavity 2 is fixed with a control hydraulic rod 3, the output end of the control hydraulic rod 3 is fixed with a top plate 4, and the inner side of the top plate 4 is provided with a rectangular block 5, the upper surface of the rectangular block 5 is fixed with a movable pier 6, and the outer end of the movable pier 6 is provided with a rectangular cavity 7, the top end of the column fixed on the upper surface of the bottom pier 1 is transversely fixed with a reinforcement hydraulic rod 8, and the output end of the reinforcement hydraulic rod 8 is fixed with an extrusion block 9; The angle deviation monitoring structure 27 inside the receiving plate 18 monitors the position of the middle part of the car in real time. The position of the middle part of the car is detected by the angle deviation monitoring structure 27. The angle deviation monitoring structure 27 can be a laser displacement sensor. When the car deviates, the angle deviation monitoring structure 27 transmits a signal to the control panel 26, and the control panel 26 starts the control hydraulic rod 3 and the reinforcement hydraulic rod 8 inside the position control structure. The control hydraulic rod 3 and the reinforcement hydraulic rod 8 control the position of the rectangular block 5. When the rectangular block 5 needs to move left and right, the control hydraulic rods 3 on the left and right sides drive the top plate 4 to move left and right, thereby pushing the rectangular block 5 to move left and right. Since the top plates 4 on the front and rear sides are only in contact with the rectangular block 5, the movement of the rectangular block 5 will not be affected. The reinforcement hydraulic rods 8 on the left and right sides drive the extrusion block 9 to move left and right. The extrusion blocks 9 on the front and rear sides move inside the rectangular cavity 7, and the movable pier 6 moves left and right. The positions of the polyurethane buffer 12 and the buffer hydraulic rod 16 on the movable pier 6 are adjusted so that the deviation between the polyurethane buffer 12 and the buffer hydraulic rod 16 and the center of the car is maintained at 0-2°. Embodiment 2: In the existing elevator safety high-efficiency buffer, when the polyurethane buffer 12 and the buffer pressure rod 16 are pressed down, the polyurethane buffer 12 will deviate, affecting the buffering effect. In order to solve this technical problem, this embodiment discloses the following technical content, please refer to Figure 1 , Figure 2 , Figure 6 , Fig. 9 , Fig.10 and Fig.11 ; A limiting structure is arranged on the outer side of the polyurethane buffer 12, and the limiting structure includes a first limiting groove 10, a second limiting groove 13 and a limiting rod 14. The first limiting groove 10 is opened inside the movable pier 6, the second limiting groove 13 is opened inside the first base 11, and a limiting rod 14 is arranged on the outer side of the polyurethane buffer 12; When the car falls downward, the car presses the polyurethane buffer 12, the buffer pressure rod 16 and the spring 17, and the kinetic energy of the car falling is absorbed by the polyurethane buffer 12, the buffer pressure rod 16 and the spring 17. When the polyurethane buffer 12 is compressed, the position of the polyurethane buffer 12 is limited by the limiting structure to prevent the polyurethane buffer 12 from deflecting. When the polyurethane buffer 12 moves downward, the limiting rod 14 moves downward inside the first limiting groove 10 and the second limiting groove 13, and the polyurethane buffer 12 is limited by the limiting rod 14 to prevent the polyurethane buffer 12 from deflecting, thereby ensuring the buffering effect. Embodiment 3: In the existing elevator safety high-efficiency buffer, it is inconvenient to open and close the safety switch during the buffering process. In order to solve this technical problem, this embodiment discloses the following technical content, please refer to Figure 1-Figure 4 , Figure 7 , Figure 8 and Fig.11 ; A second base 15 is provided on the inner side of the first base 11, and a buffer hydraulic rod 16 is fixed on the upper surface of the second base 15, and the second base 15 is fixedly connected to the movable pier 6 by screws, a spring 17 is provided on the outer side of the top end of the buffer hydraulic rod 16, and a receiving plate 18 is fixed on the upper surface of the buffer hydraulic rod 16, and an angle deviation monitoring structure 27 is installed inside the receiving plate 18, and a safety switch triggering structure is provided on the right side of the buffer hydraulic rod 16, and the safety switch triggering structure includes a limiting block 19, a vertical rod 20, a gear ring 21, a screw rod 22, an L-shaped rod 23 and a mounting plate 24, a limiting block 19 is fixed on the right side of the buffer hydraulic rod 16, and the interior of the limiting block 19 is penetrated by the vertical rod 20, a gear ring 21 is provided on the inner side of the vertical rod 20, and the internal thread of the gear ring 21 is connected with the screw rod 22, and the internal of the screw rod 22 is penetrated by the L-shaped rod 23, the front and rear ends of the gear ring 21 are provided with mounting plates 24, and the front side of the gear ring 21 is provided with a safety switch 25; When the plunger of the buffer hydraulic rod 16 moves downward, the limiting block 19 moves downward, the toothed ring 21 meshing with the limiting block 19 rotates clockwise, and the screw 22 moves forward to start the safety switch 25, disconnecting the power supply of the elevator. When the limiting block 19 moves upward to the initial position, the counterclockwise rotation of the toothed ring 21 drives the screw 22 to move backward to the initial position, closing the safety switch 25, and turning on the power supply of the elevator; The above completes a series of operations of the elevator safety high-efficiency buffer and its working method. The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0018] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0019] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. 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. An efficient buffer for elevator safety, comprising a bottom pier (1), a movable pier (6), a polyurethane buffer (12) and a buffer pressure rod (16), characterized in that: A position control structure is installed on the bottom pier (1), and the position control structure comprises an active cavity (2), a control hydraulic rod (3), a top plate (4), a rectangular block (5), an active pier (6), a rectangular cavity (7), a reinforcement hydraulic rod (8) and an extrusion block (9). The bottom pier (1) is provided with an active cavity (2), and a control hydraulic rod (3) is fixed inside the active cavity (2). The top plate (4) is fixed to the output end of the control hydraulic rod (3), and a rectangular block (5) is arranged on the inner side of the top plate (4). The upper surface of the rectangular block (5) is fixed to the active pier (6), and the outer end of the active pier (6) is provided with a rectangular cavity (7). A reinforcement hydraulic rod (8) is transversely fixed to the top end of a column fixed to the upper surface of the bottom pier (1), and an extrusion block (9) is fixed to the output end of the reinforcement hydraulic rod (8); A first base (11) is fixed above the movable pier (6) by means of screws, a polyurethane buffer (12) is fixed on the upper surface of the first base (11), a limiting structure is arranged on the outer side of the polyurethane buffer (12), the limiting structure comprises a first limiting groove (10), a second limiting groove (13) and a limiting rod (14), the movable pier (6) is provided with the first limiting groove (10), the first base (11) is provided with the second limiting groove (13), and the outer side of the polyurethane buffer (12) is provided with the limiting rod (14); A second base (15) is arranged on the inner side of the first base (11), and a buffer pressure rod (16) is fixed on the upper surface of the second base (15); the second base (15) is fixedly connected to the movable pier (6) by means of screws; a spring (17) is arranged on the outer side of the top end of the buffer pressure rod (16), and a receiving plate (18) is fixed on the upper surface of the buffer pressure rod (16); an angle deviation monitoring structure (27) is installed inside the receiving plate (18); a safety switch triggering structure is arranged on the right side of the buffer pressure rod (16), and the safety switch triggering structure comprises a limiting block (19), a vertical rod (20), a gear A ring (21), a screw (22), an L-shaped rod (23) and a mounting plate (24); a limiting block (19) is fixed to the right side of the buffer hydraulic rod (16); a vertical rod (20) is passed through the limiting block (19); a gear ring (21) is arranged on the inner side of the vertical rod (20); a screw (22) is threadedly connected to the inner side of the gear ring (21); an L-shaped rod (23) is passed through the inner side of the screw (22); mounting plates (24) are arranged at the front and rear ends of the gear ring (21); a safety switch (25) is arranged on the front side of the gear ring (21); and a control panel (26) is installed on the front side of the bottom pier (1).

2. The efficient buffer for elevator safety and the working method thereof according to claim 1, characterized in that: The control hydraulic rod (3) is installed on the front, rear, left and right inner walls of the movable chamber (2).

3. The efficient buffer for elevator safety according to claim 1, characterized in that: The extrusion block (9) is located on the inner side of the rectangular cavity (7), and the rectangular cavity (7) is opened at an equal angle on the outer end of the movable pier (6).

4. The efficient buffer for elevator safety according to claim 1, characterized in that: The upper surface of the limiting rod (14) is flush with the upper surface of the receiving plate (18), and the top end of the limiting rod (14) is inserted into the top end of the polyurethane buffer (12).

5. The efficient buffer for elevator safety according to claim 1, characterized in that: The L-shaped rod (23), the mounting plate (24) and the safety switch (25) are all fixedly connected to the buffer hydraulic rod (16).

6. The efficient buffer for elevator safety according to claim 1, characterized in that: The bottom end of the vertical rod (20) is in a sawtooth structure, and the bottom end of the vertical rod (20) is meshingly connected with the gear ring (21).

7. The efficient buffer for elevator safety according to claim 1, characterized in that: The gear ring (21) is rotatably connected to the mounting plate (24).

8. A method for operating the efficient buffer for elevator safety as claimed in claim 1, characterized in that: The following steps are involved: Step 1: The position of the middle of the car is detected by the angle deviation monitoring structure (27). When the car deviates, the control panel (26) starts the position control structure to adjust the positions of the rectangular block (5), the movable pier (6), the polyurethane buffer (12) and the buffer pressure rod (16) so that the deviation between the center of the polyurethane buffer (12) and the buffer pressure rod (16) and the center of the car is controlled within 0-2°; Step 2: When the car falls downward, the car presses the polyurethane buffer (12), the buffer pressure rod (16) and the spring (17), and the kinetic energy of the car falling is absorbed by the polyurethane buffer (12), the buffer pressure rod (16) and the spring (17). When the urethane buffer (12) is compressed, the position of the urethane buffer (12) is limited by the limiting structure to prevent the urethane buffer (12) from being deflected; Step 3: When the plunger of the buffer hydraulic rod (16) moves downward, the safety switch triggering structure triggers the safety switch (25), the limiting block (19) moves downward, the gear ring (21) rotates, and the screw (22) moves forward to activate the safety switch (25), thereby disconnecting the power supply of the elevator; Step 4: When the limiting block (19) moves upward to the initial position, the rotation of the gear ring (21) drives the screw (22) to move backward to the initial position, and the power of the elevator is turned on.

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