CN218453875U

CN218453875U - Improved elevator speed limiter

Info

Publication number: CN218453875U
Application number: CN202221240794.5U
Authority: CN
Inventors: 肖天; 徐东升; 邹智; 江天
Original assignee: Lotte Elevator Parts Zhejiang Co ltd
Current assignee: Lotte Elevator Parts Zhejiang Co ltd
Priority date: 2022-05-23
Filing date: 2022-05-23
Publication date: 2023-02-07
Anticipated expiration: 2032-05-23

Abstract

The utility model provides an improved elevator speed limiter, which belongs to the elevator safety field, and comprises a support frame, a rope wheel and a bidirectional ratchet wheel which are rotatably installed inside the support frame, a bidirectional pawl which is movably installed inside the support frame and is used for triggering the rope wheel to be locked by matching with the bidirectional ratchet wheel, a safety switch and an electromagnet which are fixedly installed outside the support frame, and a contact rod which is fixedly installed on the bidirectional pawl, penetrates through the support frame and extends to the position between the safety switch and the electromagnet; fixed mounting has on the rope sheave follow the rotatory signal disc of rope sheave, fixed mounting has on the support frame with two sensors that the signal disc corresponds. This elevator overspeed governor simple structure, easy equipment, convenient to use can monitor the direction of rotation and the rotational speed of rope sheave effectively, further guarantees the steady operation of elevator.

Description

Improved elevator speed limiter

Technical Field

The utility model belongs to the technical field of elevator safety, especially, relate to an improved generation elevator overspeed governor.

Background

The elevator speed limiter is one of safety control components in an elevator safety protection system, and when an elevator runs over speed or falls, the speed limiter and the safety tongs perform linkage action to decelerate and stop an elevator car.

The bidirectional speed governor for the machine-room-less elevator is generally of a cam pendulum type and generally comprises a frame, a rope pulley, a ratchet, a pawl, an electric switch, an action electromagnet and the like. When the lift car moves, a steel wire rope bypassing the speed limiter rope pulley drives the rope pulley to rotate, the rope pulley drives the cam fixed with the rope pulley to rotate together, and the rubber wheel at one end of the pawl swings back and forth on the cam. When the movement speed of the elevator car exceeds a preset range, the swing amplitude of the pawl is increased, on one hand, a switch touch rod on the pawl swings along with the pawl, and along with the increase of the swing amplitude, the switch touch rod can trigger an electric switch to cut off the power supply of the traction machine; on the other hand, when the swing amplitude of the pawl is increased and the cam reaches a resonance, the jaw at the other end of the pawl can collide with the ratchet wheel jaw to be clamped, so that the speed limiter rope wheel is stopped, and the speed limiter steel wire rope and the rope wheel generate enough friction force to enable the steel wire rope to lift the safety gear mechanism, so that the safety gear acts and stops.

Although the bidirectional speed limiter can realize basic braking work and is matched with a safety tongs to ensure the safety of the elevator, the rotation speed and the rotation direction of the rope wheel are difficult to monitor, and the use is very inconvenient.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides an improved generation elevator overspeed governor aims at solving the problem that proposes in the background art.

The embodiment of the utility model provides a realize like this, an improved generation elevator overspeed governor, including the support frame, rotate install at rope sheave and two-way ratchet inside the support frame, movable mounting be used for triggering with two-way ratchet cooperation with the two-way ratchet in the support frame with two-way pawl of rope sheave locking, fixed mounting in the safety switch and the electro-magnet of support frame outside and fixed mounting on two-way pawl and run through in the support frame and extend to the feeler lever between safety switch and the electro-magnet; fixed mounting has on the rope sheave follow the rotatory signal disc of rope sheave, fixed mounting has on the support frame with two sensors that the signal disc corresponds.

Preferably, the signal panel is provided with a plurality of perforations distributed in an annular array, and the sensor is a hall sensor.

Preferably, the inner sides of the two ends of the support frame are respectively and fixedly provided with a connecting plate and a support column.

Preferably, a long waist hole is formed in the position, corresponding to the feeler lever, of the support frame.

This elevator overspeed governor simple structure, easy equipment, convenient to use can monitor the direction of rotation and the rotational speed of rope sheave effectively, further guarantees the steady operation of elevator.

Drawings

Fig. 1 is a schematic diagram of an improved elevator governor arrangement;

fig. 2 is a front view schematic diagram of an improved elevator governor.

Description of the symbols:

1. a support frame;

2. a sheave;

3. a bidirectional ratchet wheel;

4. a bidirectional pawl;

5. a safety switch;

6. an electromagnet;

7. a feeler lever;

8. a signal panel;

9. perforating;

10. a sensor;

11. a connecting plate;

12. a support column;

13. a long waist hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The utility model provides an improved generation elevator overspeed governor, as shown in fig. 1 and 2, this elevator overspeed governor includes that support frame 1, rotation are installed 1 inside rope sheave 2 of support frame and two-way ratchet 3, movable mounting be in support frame 1 inside be used for trigger with the cooperation of two-way ratchet 3 will two-way pawl 4, the fixed mounting of 2 locking of rope sheaves the safety switch 5 and the electro-magnet 6 and the fixed mounting in the 1 outside of support frame are in two-way pawl 4 go up and run through in support frame 1 and extend to safety switch 5 with feeler lever 7 between the electro-magnet 6.

Different from a traditional elevator speed limiter, a signal panel 8 rotating along with the rope wheel 2 is fixedly installed on the rope wheel 2, and two sensors 10 corresponding to the signal panel 8 are fixedly installed on the support frame 1. The signal panel 8 is provided with a plurality of through holes 9 distributed in an annular array, and the sensor 10 is a hall sensor. When the signal disc 8 rotates along with the rope pulley 2 and the perforation 9 corresponds to the position of the Hall sensor, the Hall sensor senses the light source, when the position without holes on the signal disc 8 corresponds to the position of the Hall sensor, the Hall sensor is shielded, and the rotating speed of the signal disc 8 is judged by acquiring the sensing frequency of the sensor 10, so that the rotating speed of the rope pulley 2 is acquired; meanwhile, two sensors 10 are adopted, one sensor 10 can be used as a comparison sensing area and matched with the other sensor 10, and the rotation direction of the signal disc 8 is judged by comparing the time sequences of the two sensors 10, so that the rotation direction of the rope wheel is obtained. The elevator speed limiter can effectively monitor the rotating speed and the direction of the rope wheel 2, and is convenient and safe to use.

As shown in fig. 1 and 2, the support frame 1 is composed of two support plates arranged outside the rope pulley 2, the bidirectional ratchet 3 and the bidirectional pawl 4, and a connecting plate 11 and a support column 12 are fixedly arranged inside two ends of the support frame 1 respectively in order to ensure the stability of the speed limiter structure.

As shown in fig. 2, in order to enable the trolley bar 7 to float on the support frame 1, a long waist hole 13 is opened at a position on the support frame 1 corresponding to the trolley bar 7.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims

1. An improved elevator speed limiter comprises a support frame (1), a rope pulley (2) and a bidirectional ratchet wheel (3) which are rotatably installed inside the support frame (1), a bidirectional pawl (4) which is movably installed inside the support frame (1) and used for triggering the bidirectional ratchet wheel (3) to be matched with the bidirectional ratchet wheel to lock the rope pulley (2), a safety switch (5) and an electromagnet (6) which are fixedly installed on the outer side of the support frame (1), and a contact rod (7) which is fixedly installed on the bidirectional pawl (4), penetrates through the support frame (1) and extends between the safety switch (5) and the electromagnet (6); the rope sheave is characterized in that a signal panel (8) rotating along with the rope sheave (2) is fixedly mounted on the rope sheave (2), and two sensors (10) corresponding to the signal panel (8) are fixedly mounted on the support frame (1).

2. An improved elevator governor according to claim 1, characterized in that the signal disc (8) has a number of perforations (9) distributed in an annular array and the sensor (10) is a hall sensor.

3. The improved elevator speed limiter according to claim 1, characterized in that the inner sides of the two ends of the supporting frame (1) are respectively fixedly provided with a connecting plate (11) and a supporting column (12).

4. The improved elevator speed limiter according to claim 1, characterized in that a long waist hole (13) is arranged on the supporting frame (1) at a position corresponding to the contact rod (7).