CN220098210U - Action trigger device of electronic safety tongs - Google Patents
Action trigger device of electronic safety tongs Download PDFInfo
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- CN220098210U CN220098210U CN202321627989.XU CN202321627989U CN220098210U CN 220098210 U CN220098210 U CN 220098210U CN 202321627989 U CN202321627989 U CN 202321627989U CN 220098210 U CN220098210 U CN 220098210U
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- swing frame
- rotating shaft
- guide rail
- electronic safety
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- 238000004891 communication Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Abstract
The electronic safety tongs action triggering device comprises a base, a swing frame, a friction wheel, a rotating shaft, a rotary encoder and an elastic compression assembly; the lower end of the base is fixedly arranged on the top surface outside the car; the lower end of the swing frame is hinged on the base, and the swing frame rotates in a vertical plane around a hinge point of the swing frame so as to be far away from or close to the guide rail; the friction wheel is fixedly arranged on the rotating shaft; the rotating shaft is horizontally arranged and rotatably arranged at the upper end of the swing frame; the rotary encoder is arranged at one end of the rotating shaft and is used for detecting the angular speed of the rotating shaft; the elastic pressing component is arranged between the base and the swing frame, and forces the swing frame to rotate towards one side close to the guide rail through elastic force, so that the friction wheel is pressed on the guide rail. The utility model is matched with the electronic safety tongs for use, realizes overspeed detection of the elevator car, and is used for triggering the electronic safety tongs to act when the elevator car overspeed, thereby manufacturing the power failure elevator car.
Description
Technical Field
The utility model relates to the technical field of elevator safety protection devices, in particular to an electronic safety tongs action triggering device.
Background
The elevator comprises a car, a guide rail and a traction machine, wherein the car is in sliding fit with the guide rail, the guide rail is directly or indirectly fixedly arranged on a building body, and the traction machine is connected with the car through a steel wire rope and used for driving the car to lift.
The speed limiter system is an important component in an elevator safety protection system, and the existing speed limiter system comprises a speed limiter and a safety tongs, wherein the speed limiter plays a role in monitoring the speed of an elevator car and sending a control command (specifically, when the elevator car has overspeed condition, an electric switch is triggered to cut off power supply of a traction machine and transmit an action signal to the safety tongs), and the safety tongs play a role in executing braking (specifically, the safety tongs receive the signal transmitted by the speed limiter and trigger the action to enable the safety tongs to clamp a guide rail and stop the car through friction force between the safety tongs and the guide rail).
The common safety tongs are purely mechanical in operation, are not affected by power faults, but are complex in structure, large in device and possibly change in trigger sensitivity with the increase of the using time.
In order to solve the above problems of the purely mechanical safety tongs, the utility model patent with publication number CN112110311a discloses an electronic safety tongs for elevator braking, when the elevator accidentally moves, a telescopic piece (the telescopic piece is an electromagnet, a hydraulic telescopic unit, an electric telescopic unit or a pneumatic telescopic unit) drives a hinging rod to drive a braking block to be clamped on a guide rail, and the braking block is driven to slide along with the continued movement of the elevator, so that further locking is realized by using a locking block. However, the structure of the electronic safety gear is obviously different from that of the traditional purely mechanical safety gear, and the electronic safety gear cannot be matched with the traditional purely mechanical speed limiter. Conventional purely mechanical governors do not enable triggering of the electronic safety gear to act based on an overspeed state of the elevator car. Thus, the relevant content about how to implement overspeed detection of an elevator car and trigger the action of the electric safety gear based on the detection result needs to be supplemented and perfected.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide an electronic safety gear action triggering device which is matched with an electronic safety gear in the utility model patent of publication No. CN112110311A to realize overspeed detection of an elevator car and trigger the electronic safety gear to act based on a detection result.
The technical scheme of the utility model is as follows: the electronic safety gear action triggering device is applied to the electronic safety gear, and the electronic safety gear is applied to the elevator; the elevator comprises a lift car and a guide rail, wherein the lift car is in sliding fit with the guide rail; the electronic safety tongs comprise a telescopic piece and a brake block, wherein the telescopic piece is used for driving the brake block to be clamped on the guide rail;
the device comprises a base, a swing frame, a friction wheel, a rotating shaft, a rotary encoder and an elastic compression assembly; the lower end of the base is fixedly arranged on the top surface outside the car; the lower end of the swing frame is hinged on the base, and the swing frame rotates in a vertical plane around a hinge point of the swing frame so as to be far away from or close to the guide rail; the friction wheel is fixedly arranged on the rotating shaft; the rotating shaft is horizontally arranged and rotatably arranged at the upper end of the swing frame; the rotary encoder is arranged at one end of the rotating shaft and is used for detecting the angular speed of the rotating shaft; the elastic pressing component is arranged between the base and the swing frame, and forces the swing frame to rotate towards one side close to the guide rail through elastic force, so that the friction wheel is pressed on the guide rail.
The utility model further adopts the technical scheme that: the elastic compression assembly comprises a telescopic rod and a spring; the telescopic rod comprises a middle section and end sections which are connected with the two ends of the middle section in a sliding way, one end of the telescopic rod is hinged to one side of the base, and the other end of the telescopic rod is hinged to the middle part of the swing frame; the spring is compressed and sleeved on the telescopic rod, one end of the spring is propped against the base, and the other end of the spring is propped against the swing frame.
The utility model further adopts the technical scheme that: the system also comprises an STM32 singlechip; and a signal input end of the STM32 singlechip is in communication connection with the rotary encoder, and a signal output end of the STM32 singlechip is in communication connection with the telescopic piece.
The utility model further adopts the technical scheme that: the telescopic part is an electromagnet, a hydraulic telescopic unit, an electric telescopic unit or a pneumatic telescopic unit.
Compared with the prior art, the utility model has the following advantages:
1. the electronic safety gear is matched with the electronic safety gear in the utility model patent CN112110311A to realize overspeed detection of the elevator car, and the electronic safety gear is used for triggering the electronic safety gear to act when the elevator car overspeed, so that the elevator car is in power failure;
2. based on the setting of elasticity hold-down subassembly, on the one hand make friction wheel outer disc keep laminating with the guide rail surface, on the other hand make and form certain frictional force between friction wheel and the guide rail. Therefore, the conditions of idle running, slipping and non-contact of the friction wheel are avoided, and the accuracy of the detection result is ensured.
The utility model is further described below with reference to the drawings and examples.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a schematic diagram of connection relation of each electric component in the present utility model.
Legend description: a car 11; a guide rail 12; a base 2; a swing frame 3; a friction wheel 4; a rotating shaft 5; a rotary encoder 6; a telescopic rod 71; a spring 72; a telescoping member 100; STM32 singlechip 200.
Detailed Description
Example 1
As shown in fig. 1-2, the electronic safety gear action triggering device is applied to an electronic safety gear, and the electronic safety gear is applied to an elevator. The elevator comprises a car 11 and guide rails 12, the car 11 being in sliding engagement with the guide rails 12. The electric safety gear comprises a telescopic member 100 and a brake shoe (not shown in the figures), the telescopic member 100 being intended to actuate the brake shoe to clamp onto the rail 12.
The electronic safety tongs action triggering device comprises a base 2, a swing frame 3, a friction wheel 4, a rotating shaft 5, a rotary encoder 6 and an elastic compression assembly.
The lower end of the base 2 is fixedly mounted on the outer top surface of the car 11. The lower end of the swing frame 3 is hinged on the base 2, and the swing frame 3 rotates in a vertical plane around a hinge point of the swing frame to be far away from or close to the guide rail 12. The friction wheel 4 is fixedly arranged on the rotating shaft 5. The rotating shaft 5 is horizontally arranged and rotatably arranged at the upper end of the swing frame 3. A rotary encoder 6 is installed at one end of the rotating shaft 5 for detecting an angular velocity of the rotating shaft 5. The elastic pressing component is arranged between the base 2 and the swing frame, and forces the swing frame 3 to rotate towards one side close to the guide rail 12 through elastic force, so that the friction wheel 4 is pressed on the guide rail 12. The elastic compression assembly comprises a telescopic rod 71 and a spring 72, wherein the telescopic rod 71 comprises a middle section and end sections which are connected to the two ends of the middle section in a sliding mode (the end sections cannot be separated from the middle section when sliding to the limit position), the telescopic rod 71 is hinged to one side of the base 2 at one end, and the telescopic rod 71 is hinged to the middle of the swing frame 3 at the other end. The spring 72 is fitted around the telescopic rod 71 with one end abutting against the base 2 and the other end abutting against the swing frame 3.
Preferably, the electronic safety tongs action triggering device further comprises an STM32 singlechip 200. The signal input end of STM32 singlechip 200 is connected with rotary encoder 6 communication, and the signal output end of STM32 singlechip 200 is connected with telescopic member 100 communication.
Preferably, the telescoping member 100 is an electromagnet, a hydraulic telescoping unit, an electric telescoping unit, or a pneumatic telescoping unit.
Brief description of the working principle of the utility model:
the friction wheel 4 is always attached to and pressed against the guide rail 12 under the action of the elastic force of the elastic pressing component, when the car 11 moves up and down, the friction wheel 4 rolls along the guide rail 12, and the linear speed of the friction wheel 4 is equal to the lifting/lowering speed of the car 11. The rotary encoder 6 is used for detecting the angular speed of the rotating shaft, the angular speed of the rotating shaft and the linear speed of the friction wheel are in linear positive correlation, and the conversion relation between the angular speed of the rotating shaft and the linear speed of the friction wheel can be calculated by measuring the size of the friction wheel 4. The STM32 single-chip microcomputer 200 is provided with a threshold value of the angular speed of the rotating shaft, and when the threshold value is higher, the elevator car 11 is in an overspeed state.
When the elevator runs, the rotary encoder 6 detects the angular speed of the rotating shaft in real time and transmits the detection result to the STM32 singlechip 200 in real time, and when the angular speed of the rotating shaft exceeds the threshold value, the STM32 singlechip 200 immediately controls the telescopic part 100 to act so as to lock the guide rail 12 of the electronic safety tongs (the specific locking process relates to power transmission in the electronic safety tongs, and see related introduction of the background technology or patent text of publication No. CN 112110311A).
Claims (4)
1. The electronic safety gear action triggering device is applied to the electronic safety gear, and the electronic safety gear is applied to the elevator; the elevator comprises a lift car and a guide rail, wherein the lift car is in sliding fit with the guide rail; the electronic safety tongs comprise a telescopic piece and a brake block, wherein the telescopic piece is used for driving the brake block to be clamped on the guide rail;
the method is characterized in that: the device comprises a base, a swing frame, a friction wheel, a rotating shaft, a rotary encoder and an elastic compression assembly; the lower end of the base is fixedly arranged on the top surface outside the car; the lower end of the swing frame is hinged on the base, and the swing frame rotates in a vertical plane around a hinge point of the swing frame so as to be far away from or close to the guide rail; the friction wheel is fixedly arranged on the rotating shaft; the rotating shaft is horizontally arranged and rotatably arranged at the upper end of the swing frame; the rotary encoder is arranged at one end of the rotating shaft and is used for detecting the angular speed of the rotating shaft; the elastic pressing component is arranged between the base and the swing frame, and forces the swing frame to rotate towards one side close to the guide rail through elastic force, so that the friction wheel is pressed on the guide rail.
2. The electronic safety gear action triggering apparatus of claim 1 wherein: the elastic compression assembly comprises a telescopic rod and a spring; the telescopic rod comprises a middle section and end sections which are connected with the two ends of the middle section in a sliding way, one end of the telescopic rod is hinged to one side of the base, and the other end of the telescopic rod is hinged to the middle part of the swing frame; the spring is compressed and sleeved on the telescopic rod, one end of the spring is propped against the base, and the other end of the spring is propped against the swing frame.
3. The electronic safety gear action triggering apparatus of claim 2, wherein: the system also comprises an STM32 singlechip; and a signal input end of the STM32 singlechip is in communication connection with the rotary encoder, and a signal output end of the STM32 singlechip is in communication connection with the telescopic piece.
4. An electric safety gear action triggering apparatus as recited in claim 3, wherein: the telescopic part is an electromagnet, a hydraulic telescopic unit, an electric telescopic unit or a pneumatic telescopic unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321627989.XU CN220098210U (en) | 2023-06-26 | 2023-06-26 | Action trigger device of electronic safety tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321627989.XU CN220098210U (en) | 2023-06-26 | 2023-06-26 | Action trigger device of electronic safety tongs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220098210U true CN220098210U (en) | 2023-11-28 |
Family
ID=88848849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321627989.XU Active CN220098210U (en) | 2023-06-26 | 2023-06-26 | Action trigger device of electronic safety tongs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220098210U (en) |
-
2023
- 2023-06-26 CN CN202321627989.XU patent/CN220098210U/en active Active
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