Elevator speed limiter

Abstract

The utility model relates to the technical field of elevator equipment, and discloses an elevator speed limiter which comprises a bottom plate, a second supporting frame is fixedly connected to one side of the top face of the bottom plate, a motor driver is fixedly connected to the top of the second supporting frame, and a second electric push rod is fixedly connected to one side of the top of the second supporting frame. The outer wall of one side of the third rotating shaft is rotationally connected with a clamping plate, and one side of the bottom of the clamping plate is fixedly connected with a friction plate. According to the device, signals are transmitted to the motor driver through the rope tester, then the motor driver drives the second electric push rod to descend, the clamping plate and the friction plate are driven to move the middle portions and abut against the surface of the rotating friction plate, the descending speed of the elevator car can be slowed down, and the situation that the elevator car is overspeed and out of control is avoided; and the situation that when the limiting clamping teeth and the clamping gear conduct emergency braking on the elevator car, the structure is damaged, and therefore the safety of the elevator is reduced can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator equipment, in particular to an elevator speed limiter. Background Art

[0002] An elevator is a vertical transportation tool used to provide vertical transportation services along the fixed guide rails of the car inside or outside a building. It is a convenient, efficient and safe means of transportation, widely used in various buildings, including residential buildings, commercial buildings, hospitals, airports, etc. During operation, the elevator car may overspeed and lose control for any reason, or even fall. The speed limiter can brake the car by means of a linkage action of the safety clamp when the car overspeeds and loses control. However, some speed limiters, due to their single structure, can easily cause structural damage when limiting the speed and braking the elevator, thereby reducing the safety performance of the elevator. Utility Model Content

[0003] In order to make up for the above shortcomings, the utility model provides an elevator speed limiter, which aims to improve the problem that some speed limiters in the prior art are easily damaged due to their single structure when limiting the speed and braking the elevator, thereby reducing the safety performance of the elevator.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an elevator speed limiter, including a base plate, a second support frame is fixedly connected to one side of the top surface of the base plate, a motor driver is fixedly connected to the top of the second support frame, a second electric push rod is fixedly connected to one side of the top of the second support frame, an output end of the second electric push rod is fixedly connected to a third rotating shaft, a clamping plate is rotatably connected to an outer wall of one side of the third rotating shaft, the bottom surface of the top of the second support frame is fixedly connected to the second rotating shaft, the top of the clamping plate is rotatably connected to an outer wall of one side of the second rotating shaft, and a friction plate is fixedly connected to one side of the bottom of the clamping plate.

[0005] As a further description of the above technical solution:

[0006] A first support frame is fixedly connected to the other side of the top surface of the base plate, a baffle is fixedly connected to the middle of one side of the first support frame, a rope tester is fixedly connected to the middle of one side of the baffle, a first rotating shaft is rotatably connected to the middle of the first support frame, a locking gear is fixedly connected to the outer wall of one side of the first rotating shaft, a first electric push rod is fixedly connected to the inside of the baffle, a limiting locking tooth is fixedly connected to the output end of the first electric push rod, and a motor drive plate is arranged on the top of the baffle.

[0007] As a further description of the above technical solution:

[0008] The limit locking teeth are meshingly connected with the locking gear, and the rope tester is electrically connected with the motor drive board.

[0009] As a further description of the above technical solution:

[0010] A winding wheel is fixedly connected to the middle outer wall of the first rotating shaft, a steel wire rope is arranged on the outer wall of the winding wheel, and the outer wall of the steel wire rope is arranged inside the rope tester.

[0011] As a further description of the above technical solution:

[0012] A placement groove is provided inside the baffle, and the outer wall of the limit locking tooth is slidably connected to the inside of the placement groove.

[0013] As a further description of the above technical solution:

[0014] A friction plate is fixedly connected to the outer wall of the other side of the first rotating shaft.

[0015] As a further description of the above technical solution:

[0016] The rope tester is electrically connected to the motor driver.

[0017] The utility model has the following beneficial effects:

[0018] 1. In the utility model, the signal is transmitted to the motor driver through the rope tester, and then the motor driver drives the second electric push rod to descend, driving the clamping plate and the friction plate to move the middle part and press against the surface of the rotating friction plate, so as to slow down the descending speed of the elevator car, avoid the situation of overspeed and loss of control, and avoid the limit clamping teeth and the engaging gears from causing structural damage during emergency braking, thereby reducing the safety of the elevator.

[0019] 2. In the utility model, the rope tester transmits the signal to the motor drive board, and then the motor drive board drives the first electric push rod to lower the limit gear, and performs emergency braking on the rotating engagement gear, so that the elevator car can be stopped to prevent the elevator car from falling and causing accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of an elevator speed limiter proposed by the utility model;

[0021] Figure 2 This is a partial structural schematic diagram of an elevator speed limiter proposed by the utility model;

[0022] Figure 3 A partial structural cross-sectional view of an elevator speed limiter proposed by the utility model;

[0023] Figure 4 This is a partial structural schematic diagram of an elevator speed limiter proposed by the utility model;

[0024] Figure 5 The utility model is a partial structural schematic diagram of an elevator speed limiter proposed by the utility model.

[0025] Legend:

[0026] 1. baffle; 2. rope tester; 3. motor drive plate; 4. first rotating shaft; 5. engaging gear; 6. first electric push rod; 7. limit gear; 8. motor driver; 9. second electric push rod; 10. clamping plate; 11. second rotating shaft; 12. friction plate; 13. friction plate; 14. mounting groove; 15. first support frame; 16. bottom plate; 17. second support frame; 18. winding wheel; 19. wire rope; 20. third rotating shaft. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figure 1-3 The utility model provides an embodiment: an elevator speed limiter, including a bottom plate 16, a second support frame 17 is fixedly connected to one side of the top surface of the bottom plate 16, a motor driver 8 is fixedly connected to the top of the second support frame 17, a second electric push rod 9 is fixedly connected to one side of the top of the second support frame 17, an output end of the second electric push rod 9 is fixedly connected to a third rotating shaft 20, an outer wall of one side of the third rotating shaft 20 is rotatably connected to a clamping plate 10, a second rotating shaft 11 is fixedly connected to the bottom surface of the top of the second support frame 17, the top of the clamping plate 10 is rotatably connected to an outer wall of one side of the second rotating shaft 11, and a friction plate 12 is fixedly connected to one side of the bottom of the clamping plate 10.

[0029] When the motor driver 8 receives a signal, it can drive the second electric push rod 9 to press against the top surface of the clamping plate 10, and connect with the clamping plate 10 through the third rotating shaft 20 and the second rotating shaft 11, so that when the second electric push rod 9 pushes the clamping plate, the clamping plate 10 together with the friction plate 12 can be squeezed inward.

[0030] A first support frame 15 is fixedly connected to the other side of the top surface of the bottom plate 16, a baffle 1 is fixedly connected to the middle of one side of the first support frame 15, a rope tester 2 is fixedly connected to the middle of one side of the baffle 1, a first rotating shaft 4 is rotatably connected to the middle of the first support frame 15, a locking gear 5 is fixedly connected to the outer wall of one side of the first rotating shaft 4, a first electric push rod 6 is fixedly connected to the inside of the baffle 1, and a limiting latch tooth 7 is fixedly connected to the output end of the first electric push rod 6, a motor drive plate 3 is arranged on the top of the baffle 1, and the limiting latch tooth 7 is connected to the The engaging gear 5 is in meshing connection, the rope tester 2 is electrically connected to the motor drive plate 3, the middle outer wall of the first rotating shaft 4 is fixedly connected with a winding wheel 18, the outer wall of the winding wheel 18 is provided with a wire rope 19, the outer wall of the wire rope 19 is arranged inside the rope tester 2, an accommodation groove 14 is opened inside the baffle 1, the outer wall of the limit tooth 7 is slidably connected to the inside of the accommodation groove 14, the other side outer wall of the first rotating shaft 4 is fixedly connected with a friction plate 13, and the rope tester 2 is electrically connected to the motor driver 8.

[0031] After the rope tester 2 transmits the signal to the motor driver 8, the motor driver 8 will drive the second electric push rod 9 at the bottom to drive the clamping plate 10 and the friction plate to move inward, pressing on the surface of the friction plate 13 to generate friction, thereby slowing down the descent speed of the elevator car. When the rope tester 2 detects that the descent speed of the wire rope 19 has exceeded the predetermined value, it will transmit the signal to the motor drive board 3, and the motor drive board 3 will drive the first electric push rod 6 to lower the limit tooth 7, so that the rotating engaging gear 5 can be stuck in the groove set on the inner side of the limit tooth 7, and the elevator car will be emergency braked to stop it.

[0032] Working principle: During the operation of the elevator, the rope tester 2 can always detect the descending speed of the wire rope 19. When the rope tester 2 monitors that the descending speed of the wire rope 19 is faster than a predetermined value, the rope tester 2 will transmit a signal to the motor driver 8, and then the motor driver 8 drives the second electric push rod 9 at the bottom to drive the clamping plate 10 and the friction plate to move inward, and the friction plate 12 squeezes the surface of the friction plate 13 to generate friction, thereby slowing down the descending speed of the elevator car. When the rope tester 2 detects that the descending speed of the wire rope 19 has exceeded the predetermined value, it will transmit a signal to the motor drive board 3, and then the motor drive board 3 will drive the first electric push rod 6 to make the limit tooth 7 descend. At this time, the engaging gear 5 that rotates with the first rotating shaft 4 will be stuck in the groove set on the inner side of the limit tooth 7, and the elevator car will be emergency braked to stop it, thereby avoiding the occurrence of accidents caused by the rapid fall of the elevator car.

[0033] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or 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 elevator speed governor, comprising a bottom plate (16), characterized in that: A second support frame (17) is fixedly connected to the other side of the top surface of the bottom plate (16), a motor driver (8) is fixedly connected to the top of the second support frame (17), a second electric push rod (9) is fixedly connected to one side of the top of the second support frame (17), an output end of the second electric push rod (9) is fixedly connected to a third rotating shaft (20), an outer wall of one side of the third rotating shaft (20) is rotatably connected to a clamping plate (10), a second rotating shaft (11) is fixedly connected to the bottom surface of the top of the second support frame (17), a top of the clamping plate (10) is rotatably connected to an outer wall of one side of the second rotating shaft (11), and a friction plate (12) is fixedly connected to one side of the bottom of the clamping plate (10).

2. An elevator speed governor according to claim 1, characterized in that: A first support frame (15) is fixedly connected to the other side of the top surface of the bottom plate (16); a baffle (1) is fixedly connected to the middle of one side of the first support frame (15); a rope tester (2) is fixedly connected to the middle of one side of the baffle (1); a first rotating shaft (4) is rotatably connected to the middle of the first support frame (15); a locking gear (5) is fixedly connected to the outer wall of one side of the first rotating shaft (4); a first electric push rod (6) is fixedly connected to the inside of the baffle (1); an output end of the first electric push rod (6) is fixedly connected to a limiting locking tooth (7); and a motor drive plate (3) is arranged on the top of the baffle (1).

3. An elevator speed governor according to claim 2, characterized in that: The limit locking teeth (7) are meshingly connected with the locking gear (5), and the rope tester (2) is electrically connected with the motor drive plate (3).

4. An elevator speed governor according to claim 2, characterized in that: A winding wheel (18) is fixedly connected to the middle outer wall of the first rotating shaft (4), a steel wire rope (19) is arranged on the outer wall of the winding wheel (18), and the outer wall of the steel wire rope (19) is arranged inside the rope tester (2).

5. An elevator speed governor according to claim 2, characterized in that: The baffle (1) is provided with a placement groove (14) inside, and the outer wall of the limit locking tooth (7) is slidably connected to the inside of the placement groove (14).

6. An elevator speed governor according to claim 2, characterized in that: A friction plate (13) is fixedly connected to the outer wall of the other side of the first rotating shaft (4).

7. An elevator speed governor according to claim 2, characterized in that: The rope tester (2) is electrically connected to the motor driver (8).

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