An elevator terminal floor forced deceleration device

Abstract

This application relates to the technical field of elevator forced deceleration devices, and in particular to a forced deceleration device for elevator terminal floors. The device includes an elevator shaft, with two guide rails fixedly connected to the inner wall of the shaft. A car slides on the two guide rails, and a mounting plate is fixedly connected to one side of the elevator shaft. This invention, by incorporating a mounting block, a compression plate, a soft sealing layer, an exhaust port, and a dust-blowing pipe, enables the car to contact and compress the compression plate when it moves to the terminal of the elevator shaft. During this compression, the soft sealing layer between the mounting block and the compression plate creates a sealed space within the mounting block. When compressed, the compression plate rotates, compressing the air inside the mounting block, providing initial buffering. Furthermore, the compressed air blows air onto the sensor, cleaning it, improving detection accuracy, and extending the sensor's lifespan.

Description

Technical Field

[0001] This application relates to the technical field of elevator forced deceleration devices, and in particular to an elevator terminal forced deceleration device. Background Technology

[0002] The forced deceleration device at the elevator terminal mainly consists of detection elements and a control unit. Detection elements typically include limit switches and induction probes. Limit switches are mechanically triggered detection devices, generally installed near the terminal floor of the elevator shaft. They are triggered by contact between the limit switch and the limit switch on the car. Induction probes can be of various types, such as photoelectric or electromagnetic, and operate by sensing the position and speed of the car. The control unit is usually located in the elevator's control cabinet. It receives signals from the detection elements and then, according to preset programs and parameters, issues deceleration commands to the elevator's traction machine or braking system.

[0003] A search revealed Chinese patent application CN201520788835.8, which discloses a self-diagnostic elevator terminal forced deceleration device. The device includes: paired position detection sensors, where sensors belonging to the same pair are simultaneously triggered by the elevator car and generate corresponding indicator signals; speed sensors, which respond to the triggering of each position detection sensor and generate instantaneous car speed; and a detection module, which receives and compares the consistency of the indicator signals from the same pair of position detection sensors. If inconsistent, it outputs a fault signal; if consistent, it compares the car speeds at the triggering of the two position detection sensors in the same pair and outputs a corresponding fault judgment signal based on the difference in car speeds. This invention has a self-diagnostic function, enabling it to detect its own faults, maintain the normal operation of the elevator terminal forced deceleration device, and ensure the safe operation of the elevator.

[0004] Regarding the aforementioned technologies, the inventors discovered the following drawbacks: During use, because the elevator shaft is not a completely enclosed and clean environment, dust, cobwebs, and other impurities easily accumulate on the probe surface. These impurities hinder the probe's signal sensing, block the light path, and reduce the light emission and reception efficiency, causing the probe to be unable to accurately determine the position and speed of the elevator car, thereby affecting its detection efficiency. Utility Model Content

[0005] In order to solve the problems mentioned in the background art, this application provides a forced deceleration device for elevator terminal floors.

[0006] The present application provides a forced deceleration device for elevator terminal floors, which adopts the following technical solution: including an elevator shaft, two guide rails fixedly connected to the inner wall of the elevator shaft, a car slidably fitted on the two guide rails, and an installation plate fixedly connected to one side of the elevator shaft, with a drive assembly provided on the installation plate;

[0007] Two sensors are installed on one side of the inner wall of the elevator shaft. A mounting block is fixedly connected to one side of the inner wall of the elevator shaft. A pressing plate is rotatably fitted on the inner wall of the mounting block. A soft sealing skin is provided between the pressing plate and the mounting block. Two exhaust ports are opened on one side of the mounting block. A dust blowing pipe that cooperates with the two sensors is fixedly connected to the inner wall of each exhaust port. A cleaning block is fixedly connected to one side of the car. A buffer assembly that cooperates with the cleaning block is provided on one side of the inner wall of the elevator shaft. A return spring is provided between the pressing plate and the mounting block.

[0008] Optionally, the drive assembly includes a traction machine fixedly connected to the mounting plate, a counterweight block disposed on the inner wall of the elevator shaft and cooperating with the traction machine, and the traction machine cooperating with the car.

[0009] Optionally, the buffer assembly includes a buffer plate fixedly connected to both sides of the inner wall of the elevator shaft, two dampers fixedly connected to the lower side of the buffer plate, a force-bearing block fixedly connected to the output end of the two dampers, and a buffer spring fixedly connected between the force-bearing block and the buffer plate.

[0010] Optionally, a pressure groove is provided on one side of the extrusion plate, and a load-bearing rod is provided on the inner wall of the pressure groove, with a rolling wheel rotatably fitted on the load-bearing rod.

[0011] Optionally, a contact buffer groove is provided on one side of the car, and a lubricating wheel is rotatably fitted on the inner wall of the contact buffer groove.

[0012] Optionally, a sound-insulating pad is fixedly connected to the lubrication wheel, and the sound-insulating pad and the extrusion plate cooperate with each other.

[0013] Optionally, a buffer pad is fixedly connected to the lower side of the force-bearing block, and the buffer pad and the clearing block cooperate with each other.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. This utility model, by setting up an installation block, a pressing plate, a soft sealing skin, an exhaust port, and a dust blowing pipe, enables the elevator car to make contact with and press against the pressing plate when it moves to the end of the elevator shaft. During the pressing process, the soft sealing skin between the installation block and the pressing plate creates a sealed space inside the installation block. When compressed, the pressing plate rotates to compress the air inside the installation block, achieving initial buffering. Furthermore, the compressed air inside the installation block blows air onto the sensor, achieving cleaning, improving detection accuracy, and extending the sensor's service life.

[0016] 2. By setting up a cleaning block, this utility model can move synchronously with the mounting plate during its movement, allowing the cleaning block to sweep across the outside of the sensor. This can remove impurities such as spider webs from the outside of the sensor, avoiding the influence of impurities on the sensor and further improving the accuracy of detection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application;

[0018] Figure 2 This is a structural schematic diagram of a three-dimensional cross-section of an elevator shaft in an embodiment of this application;

[0019] Figure 3 This is an embodiment of the present application. Figure 2 Enlarged structural diagram at point A;

[0020] Figure 4 This is a three-dimensional structural schematic diagram of the buffer component in the embodiments of this application;

[0021] Figure 5 This is a schematic diagram of the three-dimensional cross-section of an embodiment of this application;

[0022] Figure 6 This is a three-dimensional structural diagram of the mounting block according to an embodiment of this application.

[0023] Reference numerals: 1. Elevator shaft; 2. Guide rail; 3. Car; 4. Mounting plate; 5. Drive assembly; 501. Traction machine; 502. Counterweight; 6. Sensor; 7. Mounting block; 8. Extrusion plate; 9. Soft sealing skin; 10. Exhaust port; 11. Dust blowing pipe; 12. Cleaning block; 13. Buffer assembly; 131. Buffer plate; 132. Damper; 133. Force-bearing block; 134. Buffer spring; 14. Return spring; 15. Pressure groove; 16. Supporting rod; 17. Roller; 18. Contact buffer groove; 19. Lubricating wheel; 20. Sound insulation pad; 21. Buffer pad. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 —6 provides further detailed description of this application.

[0025] This application discloses a forced deceleration device for elevator terminal floors. For example... Figure 1-6 As shown, the elevator shaft 1 includes two guide rails 2 fixedly connected to the inner wall of the elevator shaft 1. A car 3 is slidably fitted on the two guide rails 2. A mounting plate 4 is fixedly connected to one side of the elevator shaft 1, and a drive assembly 5 is provided on the mounting plate 4.

[0026] Please see Figure 2 and Figure 5 The drive assembly 5 includes a traction machine 501 fixedly connected to the mounting plate 4 and a counterweight block 502 set on the inner wall of the elevator shaft 1 and cooperating with the traction machine 501. The traction machine 501 cooperates with the car 3. The traction machine 501 is existing technology and can pull the car 3. The counterweight block 502 is set on the other side and cooperates with the traction machine 501 to achieve a comprehensive balance.

[0027] Please see Figure 3 A contact buffer groove 18 is provided on one side of the car body 3. A lubricating wheel 19 is rotatably fitted on the inner wall of the contact buffer groove 18. When the car body 3 comes into initial contact with the extrusion plate 8, the lubricating wheel 19 rotates on one side of the extrusion plate 8 to improve the smoothness of the extrusion.

[0028] Two sensors 6 are installed on one side of the inner wall of elevator shaft 1. A mounting block 7 is fixedly connected to one side of the inner wall of elevator shaft 1. A pressing plate 8 is rotatably fitted on the inner wall of the mounting block 7. A soft sealing skin 9 is provided between the pressing plate 8 and the mounting block 7. Two exhaust ports 10 are opened on one side of the mounting block 7. A dust blowing pipe 11 that cooperates with the two sensors 6 is fixedly connected to the inner wall of each of the two exhaust ports 10. A cleaning block 12 is fixedly connected to one side of the car 3. A buffer assembly 13 that cooperates with the cleaning block 12 is provided on one side of the inner wall of elevator shaft 1. A return spring 14 is provided between the pressing plate 8 and the mounting block 7.

[0029] Please see Figure 4 The buffer assembly 13 includes a buffer plate 131 fixedly connected to both sides of the inner wall of the elevator shaft 1, two dampers 132 fixedly connected to the lower side of the buffer plate 131, a force-bearing block 133 fixedly connected to the output end of the two dampers 132, and a buffer spring 134 fixedly connected between the force-bearing block 133 and the buffer plate 131. When the clearing block 12 moves upward, it will squeeze against 124. 124 will squeeze the dampers 132 and the force-bearing block 133, thereby buffering the car 3 that has moved to the uppermost side and improving the riding experience of the users.

[0030] Please see Figure 3 A pressure groove 15 is provided on one side of the extrusion plate 8. A load-bearing rod 16 is provided on the inner wall of the pressure groove 15. A rolling wheel 17 is rotatably fitted on the load-bearing rod 16. When the car 3 extrudes the extrusion plate 8, one side of the car 3 will be squeezed between the car 3 and the rolling wheel 17. The rolling wheel 17 rotates on the load-bearing rod 16, which makes the movement of the car 3 after extruding the extrusion plate 8 smooth.

[0031] Please see Figure 4 A sound insulation pad 20 is fixedly connected to the lubrication wheel 19. The sound insulation pad 20 and the extrusion plate 8 cooperate with each other. When the lubrication wheel 19 and the extrusion plate 8 are in contact, the sound insulation pad 20 can reduce the transmission of sound to the inside of the car 3 and reduce noise when the lubrication wheel 19 rotates.

[0032] Please see Figure 4 A buffer pad 21 is fixedly connected to the lower side of the force-bearing block 133. The buffer pad 21 and the clearing block 12 cooperate with each other. When the clearing block 12 moves upward and contacts the force-bearing block 133, the buffer pad 21 can buffer the impact force and sound of the initial collision.

[0033] The implementation principle of the elevator terminal forced deceleration device in this application embodiment is as follows: When in use, the traction machine 501 drives the car 3 to move up and down, thereby realizing the operation of the elevator. The counterweight 502 is convenient to balance the relationship between the traction machine 501 and the car 3 to realize the operation. After the car 3 moves to coincide with the sensor 6, the car 3 can trigger the sensor 6 to realize forced deceleration and control its stability.

[0034] After the car 3 moves to the end of the elevator shaft 1, the car 3 will make contact with the extrusion plate 8 and extrude it. During the extrusion process, the soft sealing skin 9 between the mounting block 7 and the extrusion plate 8 forms a sealed space inside the mounting block 7. When it is compressed, the extrusion plate 8 rotates to extrude the air inside the mounting block 7, which can achieve the first buffer. The air inside the mounting block 7 is extruded to blow air into the sensor 6, which can achieve cleaning, improve detection accuracy, and extend the service life of the sensor 6.

[0035] As the mounting plate 4 moves, its cleaning block 12 moves synchronously, allowing it to pass over the outside of the sensor 6. This scrapes away impurities such as spider webs from the outside of the sensor 6, preventing them from affecting the sensor 6 and further improving the accuracy of the detection.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An elevator terminal floor forced deceleration device comprising an elevator shaft (1), characterized by: The inner wall of the elevator shaft (1) is fixedly connected to two guide rails (2), and a car (3) is slidably fitted on the two guide rails (2). A mounting plate (4) is fixedly connected to one side of the elevator shaft (1), and a drive assembly (5) is provided on the mounting plate (4). Two sensors (6) are installed on one side of the inner wall of the elevator shaft (1). An installation block (7) is fixedly connected to one side of the inner wall of the elevator shaft (1). An extrusion plate (8) is rotatably fitted on the inner wall of the installation block (7). A soft sealing skin (9) is provided between the extrusion plate (8) and the installation block (7). Two exhaust ports (10) are opened on one side of the installation block (7). A dust blowing pipe (11) that cooperates with the two sensors (6) is fixedly connected to the inner wall of each of the two exhaust ports (10). A cleaning block (12) is fixedly connected to one side of the car (3). A buffer assembly (13) that cooperates with the cleaning block (12) is provided on one side of the inner wall of the elevator shaft (1). A reset spring (14) is provided between the extrusion plate (8) and the installation block (7).

2. An elevator terminal floor forced deceleration device according to claim 1, characterized in that: The drive assembly (5) includes a traction machine (501) fixedly connected to the mounting plate (4) and a counterweight block (502) disposed on the inner wall of the elevator shaft (1) and cooperating with the traction machine (501). The traction machine (501) and the car (3) cooperate with each other.

3. An elevator terminal floor forced deceleration device according to claim 1, characterized in that: The buffer assembly (13) includes a buffer plate (131) fixedly connected to both sides of the inner wall of the elevator shaft (1), two dampers (132) fixedly connected to the lower side of the buffer plate (131), a force-bearing block (133) fixedly connected to the output end of the two dampers (132), and a buffer spring (134) fixedly connected between the force-bearing block (133) and the buffer plate (131).

4. The elevator terminal floor forced deceleration device according to claim 1, characterized in that: The extrusion plate (8) has a pressure groove (15) on one side, and a load-bearing rod (16) is provided on the inner wall of the pressure groove (15). A rolling wheel (17) is rotatably fitted on the load-bearing rod (16).

5. The elevator terminal floor forced deceleration device according to claim 1, characterized in that: The car (3) has a contact buffer groove (18) on one side, and a lubricating wheel (19) is rotatably fitted on the inner wall of the contact buffer groove (18).

6. An elevator terminal floor forced deceleration device according to claim 5, characterized in that: A sound insulation pad (20) is fixedly connected to the lubrication wheel (19), and the sound insulation pad (20) and the extrusion plate (8) cooperate with each other.

7. An elevator terminal floor forced deceleration device according to claim 3, characterized in that: A buffer pad (21) is fixedly connected to the lower side of the force-bearing block (133), and the buffer pad (21) and the clearing block (12) cooperate with each other.

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