CN214326839U - Elevator safety anti-falling device - Google Patents
Elevator safety anti-falling device Download PDFInfo
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- CN214326839U CN214326839U CN202022359443.3U CN202022359443U CN214326839U CN 214326839 U CN214326839 U CN 214326839U CN 202022359443 U CN202022359443 U CN 202022359443U CN 214326839 U CN214326839 U CN 214326839U
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- shell
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- 238000007906 compression Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 abstract description 27
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 230000001174 ascending effect Effects 0.000 abstract 2
- 238000007689 inspection Methods 0.000 abstract 1
- 230000009471 action Effects 0.000 description 9
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses an elevator safety anti-falling device, which comprises a detection part, a braking part and a mechanism return part; the device mainly comprises a shell, a guide wheel mechanism, a ratchet wheel cam roller swing rod mechanism, a lifting mechanism, a crank slider mechanism, a swing guide rod mechanism, a push rod mechanism, an eccentric wheel mechanism and the like, and the device is divided into four states of normal ascending, normal descending, emergency descending and ascending return in the operation process. The utility model discloses can realize that automated inspection speed, quick flexible braking stop, mechanism reply automatically, mechanical structure is compact, simple to operate to the sensitivity of device is high, be suitable for various power drive's perpendicular transportation equipment, can avoid electronic equipment to take place emergency because of electronic component's life-span problem simultaneously, as overspeed governor-safety tongs protection system's replacement or parallelly connected equipment, can solve because of the potential safety hazard that overspeed governor-safety tongs became invalid and bring.
Description
Technical Field
The utility model relates to a perpendicular transportation protection device especially relates to an elevator safety anti-falling device.
Background
Elevators must have sufficient safety as a powered vertical transportation device. The safety protection device of elevator has three categories of mechanical protection, electrical protection and safety protection, and the most widely used mechanical safety device has overspeed governor, safety tongs and buffer, and the overspeed governor breaks off control circuit when the abnormal conditions takes place in the elevator operation in-process fast, and then blocks the overspeed governor rope, forces the safety tongs action, and the safety tongs piece contacts with the guide rail, stops the car on the guide rail by force with its frictional force with between the guide rail, and the buffer absorbs, consumes the descending energy of elevator out of control when the elevator is out of control and hits the pit bottom. However, the three safety devices have the defects of low sensitivity, passive speed measurement, rigid braking, large volume, poor braking effect and the like.
Based on the factors, a novel mechanical elevator safety anti-falling device needs to be designed, can realize automatic speed detection, quick flexible braking and automatic mechanism return, is compact in mechanical structure and convenient to install, has high sensitivity, is suitable for various power-driven vertical transportation equipment, can avoid emergency accidents of electronic equipment due to the service life of electronic elements, is used as a substitute or parallel device of a speed limiter-safety clamp protection system, and can solve potential safety hazards caused by failure of the speed limiter-safety clamp.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an elevator safety anti-falling device is provided.
The technical scheme of the utility model as follows:
an elevator safety anti-falling device comprises a shell (1), a guide wheel (2), a ratchet cam (3), a guide wheel shaft (4), a roller swing rod (5), a swing rod connecting shaft (6), a slide block swing rod (7), a slide block connecting rod (8), a guide rail (9), a slide block (10), a swing slide block connecting rod (11), a swing slide block (12), an extension spring (13), a wedge rod (14), a guide connecting rod (15), a compression spring (16), a push rod sleeve (17), a push rod (18), a torsion spring (19), an eccentric wheel shaft (20) and an eccentric wheel (21).
The utility model provides an elevator safety anti-falling device which characterized in that: the overall composition comprises a speed detection part, a braking part and a mechanism return part; comprises a shell (1), a guide wheel mechanism, a ratchet wheel cam roller swing rod mechanism, a lifting mechanism, a slider-crank mechanism, a swing guide rod mechanism, a push rod mechanism and an eccentric wheel mechanism.
The speed detection part comprises a guide wheel (2), a ratchet cam (3), a guide wheel shaft (4), a roller swing rod (5), a swing rod connecting shaft (6), a slider swing rod (7) and an extension spring (13).
The braking part comprises a wedge rod (14), a guide connecting rod (15), a compression spring (16), a push rod sleeve (17), a push rod (18), a torsion spring (19), an eccentric wheel shaft (20) and an eccentric wheel (21).
The mechanism return part comprises a slide block connecting rod (8), a guide rail (9), a slide block (10), a swing slide block connecting rod (11) and a swing slide block (12).
The guide wheel (2) and the ratchet cam (3) are fixedly connected with the guide wheel shaft (4) through key connection; the roller swing rod (5) and the slider swing rod (7) are fixedly connected with a swing rod connecting shaft (6); the eccentric wheel (21) is fixedly connected with the eccentric wheel shaft (20) through key connection.
The guide wheel shaft (4), the swing rod connecting shaft (6) and the eccentric wheel shaft (20) are connected with the shell (1) through bearings.
The guide rail (9), the guide connecting rod (15) and the push rod sleeve (17) are fixedly connected with the shell (1) through bolts.
The slider connecting rod (8), the guide wheel shaft (4), the guide rail (9) and the slider (10) form a crank slider mechanism; the swing sliding block (12), the extension spring (13) and the sliding block connecting rod (8) form a swing guide rod mechanism.
The device can realize automatic control of speed detection, braking, mechanism resetting and the like.
By adopting the technical scheme, the speed detection part detects the running speed of the elevator in real time in the running process of the elevator; the braking part can perform rapid flexible braking when an accident occurs; the mechanism return portion returns each mechanism to the original position when the safety device needs to be released.
Has the advantages that:
1. the utility model discloses a pure mechanical transmission, automatic monitoring speed, quick flexible braking, mechanism automatic re-setting, degree of automation is high.
2. The device has wide application range and is suitable for vertical transportation equipment running at different types and different speeds.
3. The device has high reliability and sensitive response, and can be used as a substitute or parallel device of a speed limiter-safety gear protection system.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of the speed detecting section of the present invention;
FIG. 4 is a schematic view of the braking portion of the present invention;
FIG. 5 is a schematic view of the return portion of the mechanism of the present invention;
in the figure: 1. a housing; 2. a guide wheel; 3. a ratchet cam; 4. a guide wheel shaft; 5. a roller swing rod; 6. a swing rod connecting shaft; 7. a slider swing rod; 8. a slider connecting rod; 9. a guide rail; 10. a slider; 11. a pendulum slider connecting rod; 12. a swinging slide block; 13. an extension spring; 14. a wedge rod; 15. a guide link; 16. a compression spring; 17. a push rod sleeve; 18. a push rod; 19. a torsion spring; 20. an eccentric wheel shaft; 21. an eccentric wheel.
Detailed Description
The invention will be further described with reference to the following detailed description and accompanying drawings:
as shown in fig. 1 and 2, the elevator safety anti-falling device is characterized in that: the device comprises a speed detection part, a braking part and a mechanism return part.
The speed detection part guide wheel (2) moves along with the elevator car to drive the ratchet cam (3) to rotate, and the roller swing rod (5) swings close to the surface of the cam.
The ratchet wheel cam (3) rotates along with the guide wheel shaft (4) when the elevator descends; when the elevator goes upwards, the ratchet wheel cam (3) moves in a pawl mode, and the ratchet wheel does not move.
The wedge rod (14) ensures that the push rod (18) does not pop out during normal movement and the push rod pops out quickly after an elevator accident occurs.
The torsion spring (19) ensures that the eccentric wheel (21) does not generate braking action when in normal movement.
The working principle is as follows:
and (3) normal uplink state: when the elevator normally goes upwards, the guide wheel (2) is tightly pressed on an elevator guide rail and rotates along with the elevator car, the ratchet wheel cam (3) moves in a pawl mode, the ratchet wheel does not move, and the sliding block (10) slides up and down under the action of the sliding block connecting rod (18).
And (3) normal downlink state: when the elevator normally goes downwards, the guide wheel (2) rotates along with the elevator car, the ratchet cam (3) rotates clockwise under the driving of the pawl, the roller swing rod (5) tightly clings to the surface of the ratchet cam (3) to swing for a certain angle, the slider swing rod (7) swings anticlockwise to pull the extension spring (13), the wedge rod (14) vertically and upwards lifts for a certain safety distance under the action of the tension of the compression spring (16), and the slider (10) slides up and down under the action of the slider connecting rod (18).
Emergency downlink state: when the elevator has accident overspeed, the ratchet cam (3) rotates clockwise, and the roller swing rod (5) is separated from the surface of the ratchet cam (3) under the action of inertia force and gravity. An extension spring (13) is pulled by a slider swing rod (7), the wedge rod (14) is driven to vertically lift upwards to a height larger than the depth of a wedge groove, a push rod (18) pushes an eccentric wheel (21) to rotate around an eccentric wheel shaft (20) under the action of a compression spring in a push rod sleeve (17), and the eccentric wheel (21) is tightly pressed on an elevator guide rail under the action of friction force, so that the elevator brake is realized.
An uplink reply state: when the safety device needs to be removed after the elevator is braked, the elevator traction steel wire rope lifts the lift car upwards, the guide wheel (2) rotates anticlockwise along with the lift car, the sliding block connecting rod (8) drives the sliding block (10) to move downwards, meanwhile, the sliding block (10) applies downward pressure to the swinging sliding block (12), and the swinging sliding block (12) drives the push rod (18) to slide rightwards to reset. The eccentric wheel (21) rotates anticlockwise to be separated from the guide rail and is reset under the action of the torsion spring (19).
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. The above embodiment is merely a preferred embodiment of the present invention, and various modifications and changes can be made without departing from the spirit and scope of the present invention, and these modifications and changes are also within the scope of the present invention.
Claims (1)
1. An elevator safety anti-falling device is characterized by comprising a shell (1) for fixedly connecting a car, a guide wheel (2) and a ratchet cam (3) are fixedly connected through a guide wheel shaft (4), a roller swing rod (5) and a slide block swing rod (7) are fixedly connected through a swing rod connecting shaft (6), two ends of the guide wheel shaft (4) and the swing rod connecting shaft (6) are matched and bearing-fixed on the shell (1), a slide block connecting rod (8) is connected with the guide wheel shaft (4) and a slide block (10), a guide rail (9) is fixedly connected on the shell (1), a swing slide block connecting rod (11) is hinged with a swing block (12), a tension spring (13) is connected with the slide block swing rod (7) and a wedge rod (14), a guide connecting rod (15) and a push rod sleeve (17) are fixedly connected on the shell (1), a compression spring (16) is connected with the wedge rod (14), and the push rod sleeve (17) is in clearance fit with a push rod (18), the torsion spring (19) is connected with the shell (1) and the eccentric wheel shaft (20), and the eccentric wheel shaft (20) is connected with the eccentric wheel (21) through a key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022359443.3U CN214326839U (en) | 2020-10-22 | 2020-10-22 | Elevator safety anti-falling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022359443.3U CN214326839U (en) | 2020-10-22 | 2020-10-22 | Elevator safety anti-falling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214326839U true CN214326839U (en) | 2021-10-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022359443.3U Expired - Fee Related CN214326839U (en) | 2020-10-22 | 2020-10-22 | Elevator safety anti-falling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214326839U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115092789A (en) * | 2022-08-25 | 2022-09-23 | 河南起升智能科技有限公司 | Accidental movement prevention device, accidental movement prevention assembly and elevator |
-
2020
- 2020-10-22 CN CN202022359443.3U patent/CN214326839U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115092789A (en) * | 2022-08-25 | 2022-09-23 | 河南起升智能科技有限公司 | Accidental movement prevention device, accidental movement prevention assembly and elevator |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211001 |