CN211784221U - Falling protector braking distance detection device - Google Patents
Falling protector braking distance detection device Download PDFInfo
- Publication number
- CN211784221U CN211784221U CN201922472880.3U CN201922472880U CN211784221U CN 211784221 U CN211784221 U CN 211784221U CN 201922472880 U CN201922472880 U CN 201922472880U CN 211784221 U CN211784221 U CN 211784221U
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- CN
- China
- Prior art keywords
- encoder
- braking distance
- detection device
- distance detection
- drum bolt
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 238000001514 detection method Methods 0.000 title claims abstract description 13
- 230000001012 protector Effects 0.000 title claims description 7
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model belongs to the technical field of engineering machine tool, concretely relates to safety hook braking distance detection device, the device include the encoder, and the pivot fixed connection that the encoder tip set up is at the awl drum bolt tip of safety hook, and when awl drum bolt rotates along with the gear, the rotation angle of awl drum bolt is measured to the encoder, and this numerical value is the rotation angle of gear equally, utilizes the formula: and the braking distance is pi D theta/360 degrees, and the braking distance is obtained.
Description
Technical Field
The utility model belongs to the technical field of engineering machine tool, concretely relates to safety hook braking distance detection device.
Background
The elevator is a special machine for vertically lifting goods, and is indispensable equipment for vertically transporting people and goods on a building site. When the elevator breaks down and prevents weighing down, the gear 1 rotational speed in the safety hook is accelerated, and get rid of piece 2 and throw and open, and cone drum bolt 3 is rotatory, and nut 4 displacement left, brake block 5 frictional force increase, and the rotation speed of cone drum 6 slows down, under belleville spring 7 and nut 4's effect, realizes the buffering brake step by step, guarantees the safety of people and goods when taking place to prevent weighing down the accident.
When the anti-falling device is manufactured or detected, the braking distance of the anti-falling device needs to be detected, the existing detection method is to use a depth gauge to measure the displacement of the positioning pin 8 so as to obtain the braking distance of the anti-falling device, and the depth gauge is used to measure the displacement of the positioning pin, so that when the braking distance is detected, the obtained data has large discreteness and is irregular, and accurate data cannot be obtained.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a safety hook braking distance detection device can accurately measure the turned angle of gear in the safety hook, then calculates and obtains the braking distance, and data are accurate, and the discreteness is little.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a falling protector braking distance detection device comprises an encoder, wherein a rotating shaft arranged at the end part of the encoder is fixedly connected to the end part of a cone drum bolt of a falling protector, when the cone drum bolt rotates along with a gear, the encoder measures a rotating angle, and a braking distance is obtained by using a formula; the formula is as follows: and the braking distance is pi D theta/360 degrees, wherein D is the reference circle diameter of the gear, pi is the circumferential rate, and theta is the rotation angle.
Preferably, the encoder is connected with an instrument, and the instrument can directly display the rotation angle of the conical drum bolt measured by the encoder.
Preferably, a rotating shaft of the encoder is connected with a flexible shaft with the axial direction consistent with the axial direction of the rotating shaft, and the other end of the flexible shaft is used for fixedly connecting a cone drum bolt.
Preferably, the flexible shaft is connected with the rotating shaft through a coupling.
Preferably, the encoder is arranged on the fixed frame and fixed by bolts.
The beneficial effects of the utility model reside in that:
1) when the conical drum bolt rotates along with the gear, the encoder measures the rotation angle of the conical drum bolt, and the numerical value is the rotation angle of the gear as well, and the formula is utilized: and the braking distance is pi D theta/360 degrees, and the braking distance is obtained.
2) The instrument can be used for directly obtaining the rotation angle of the conical drum bolt, the rotation angle of the gear is obtained, the numerical value of the encoder does not need to be converted again to obtain the rotation angle of the gear, and the instrument is simple and convenient and high in practicability.
3) The flexible shaft has elasticity, can freely bend transmission torque, and when the cone drum bolt rotates along with the gear, the cone drum bolt can generate certain axial movement, and the flexible shaft can ensure that the rotation of the cone drum bolt is accurately transmitted to the encoder, and can ensure the stable connection between each connecting component.
4) The coupling can ensure the stable connection between the flexible shaft and the rotating shaft.
Drawings
FIG. 1 is a schematic view of the safety catcher;
fig. 2 is a schematic structural diagram of the device during measurement.
Detailed Description
For the purpose of facilitating understanding, the present invention will be described in detail below with reference to the accompanying drawings.
A falling protector braking distance detection device comprises an encoder 10, wherein a rotating shaft 11 arranged at the end part of the encoder 10 is fixedly connected to the end part of a cone drum bolt 3 of a falling protector, when the cone drum bolt 3 rotates along with a gear 1, the encoder 10 measures the rotating angle of the cone drum bolt 3, the value is also the rotating angle of the gear 1, and the braking distance is obtained by using a formula; the formula is as follows: the braking distance is pi D theta/360 degrees, wherein D is the reference circle diameter of the gear (1), pi is the circumferential rate, and theta is the rotation angle.
The encoder 10 is connected with an instrument 20, and the instrument 20 can directly display the rotation angle of the conical drum bolt 3 measured by the encoder 10. Utilize instrument 20 can directly obtain the turned angle of conical drum bolt 3, obtain the turned angle of gear 1, need not to convert the numerical value of encoder 10 again and obtain the turned angle of gear 1, simple and convenient, the practicality is strong.
A rotating shaft 11 of the encoder 10 is connected with a flexible shaft 30, the axial direction of which is consistent with the axial direction of the rotating shaft 11, and the other end of the flexible shaft 30 is used for fixedly connecting a cone drum bolt 3. The flexible shaft 30 has elasticity and can freely bend and transmit torque, when the cone drum bolt 3 rotates along with the gear 1, the cone drum bolt 3 can axially move to a certain degree, the flexible shaft 30 can ensure that the rotation of the cone drum bolt 3 is accurately transmitted to the encoder 10, and meanwhile, the connection stability among all connecting parts can be ensured.
In order to ensure the stable connection between the flexible shaft 30 and the rotating shaft 11, the flexible shaft 30 and the rotating shaft 11 are connected through a coupling 40.
In order to ensure stability of data during measurement, the encoder 10 needs to be stabilized, so that the encoder 10 is disposed on the fixed frame 50 and fixed by the bolts 51.
Claims (5)
1. The utility model provides a safety hook braking distance detection device which characterized in that: the device comprises an encoder (10), wherein a rotating shaft (11) arranged at the end part of the encoder (10) is fixedly connected to the end part of a cone drum bolt (3) of the falling protector, when the cone drum bolt (3) rotates along with a gear (1), the encoder (10) measures a rotating angle, and a braking distance is obtained by using a formula; the formula is as follows: the braking distance is pi D theta/360 degrees, wherein D is the reference circle diameter of the gear (1), pi is the circumferential rate, and theta is the rotation angle.
2. The fall arrester braking distance detection device according to claim 1, characterized in that: the encoder (10) is connected with an instrument (20), and the instrument (20) can directly display the rotation angle of the conical drum bolt (3) measured by the encoder (10).
3. The fall arrester braking distance detection device according to claim 1, characterized in that: a rotating shaft (11) of the encoder (10) is connected with a flexible shaft (30) which is axially consistent with the rotating shaft (11), and the other end of the flexible shaft (30) is fixedly connected with a cone drum bolt (3).
4. The fall arrester braking distance detection device according to claim 3, wherein: the flexible shaft (30) is connected with the rotating shaft (11) through a coupling (40).
5. The fall arrester braking distance detection device according to claim 1, characterized in that: the encoder (10) is arranged on the fixed frame (50) and is fixed by a bolt (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922472880.3U CN211784221U (en) | 2019-12-31 | 2019-12-31 | Falling protector braking distance detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922472880.3U CN211784221U (en) | 2019-12-31 | 2019-12-31 | Falling protector braking distance detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211784221U true CN211784221U (en) | 2020-10-27 |
Family
ID=72890259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922472880.3U Expired - Fee Related CN211784221U (en) | 2019-12-31 | 2019-12-31 | Falling protector braking distance detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211784221U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116773178A (en) * | 2023-08-16 | 2023-09-19 | 中检集团公信安全科技有限公司 | Mine falling protector braking distance measuring device and measuring method thereof |
-
2019
- 2019-12-31 CN CN201922472880.3U patent/CN211784221U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116773178A (en) * | 2023-08-16 | 2023-09-19 | 中检集团公信安全科技有限公司 | Mine falling protector braking distance measuring device and measuring method thereof |
| CN116773178B (en) * | 2023-08-16 | 2024-01-05 | 中检集团公信安全科技有限公司 | Mine falling protector braking distance measuring device and measuring method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201027 |