CN204569060U - One automatically resets anti-falling safety device - Google Patents
One automatically resets anti-falling safety device Download PDFInfo
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- CN204569060U CN204569060U CN201520153940.4U CN201520153940U CN204569060U CN 204569060 U CN204569060 U CN 204569060U CN 201520153940 U CN201520153940 U CN 201520153940U CN 204569060 U CN204569060 U CN 204569060U
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- friction
- transmission shaft
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- centrifugal
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Abstract
The utility model discloses one to automatically reset anti-falling safety device, feature is that the large end cap of housing is provided with the cylinder support supporting centrifugal seat, and transmission shaft extends housing small end cover bearing location through cylinder support; Friction stopping device comprises the friction disc being enclosed within driving key connection with it on transmission shaft, and connect with friction disc both sides first, second friction member respectively that be enclosed within and transmission shaft does not connect with transmission shaft; The end face that first, second friction member connects with friction disc is higher than friction disc and exceed position and centrifugal seat is fixed; In the first friction member one section of transmission shaft is ball-screw, is provided with disc spring group between the end face that ball-screw nut connects with the first friction member and friction disc; Ball-screw nut is provided with the resistance bull stick be inserted on the first friction member; When elevator normally runs, friction stopping device drives centrifugal seat to rotate, and ball-screw nut does not produce the axial motion of compression disc spring group; During stop elevator, ball-screw nut compression disc spring group, makes the braking force of friction stopping device continue to increase stop elevator.
Description
Technical field
The utility model relates to a kind of hoist falling-proof safety device.This device, can the cage of effective stop elevator when building hoist generation falling from high altitude, can operate again simultaneously, automatically realize resetting to initial adjustment state without manual reset.
Background technology
The hoist falling-proof safety of prior art is made up of gear wheel shaft, the centrifugal mechanism be arranged on gear wheel shaft, stop mechanism and manual reset instrument.During work, drive centrifugal mechanism rotate and trigger stop mechanism by the gear wheel shaft of running, rely on the friction force increased gradually between cone drum and housing to consume the function that falling from high altitude energy realizes gradual stop.
The anti-falling safety device of prior art is suitable for the dynamic line speed of elevator generally at more than 0.8m/s, when the running velocity of elevator be less than below 0.8m/s run time, can misoperation be there is and there is potential safety hazard in anti-falling safety device; On the other hand, the anti-falling safety device of prior art, after cage falls stop, needs manually to carry out reset operation by special tool to anti-falling safety device, also needs requirement to specifications to carry out successively in operating process.When resetting inaccurate situation if occur in manual reset process, the stopping distance that elevator craning cage will be caused next time to fall is too short or long, and this all can affect safe operation and the service life of elevator.Owing to needing the anti-falling safety device of manual reset to be arranged on position close to cage top, bring many operations inconvenience to the reset work after anti-falling safety device braking, the work efficiency greatly reducing equipment repair and maintenance personnel with add overwork amount.If repeatedly take the way of short circuit control loop in manual reset process, only upwards run the centrifugal mechanism that resets by cage, and do not carry out this anti-falling safety device of manual reset, although elevator still can run up and down, but this is by with huge potential safety hazard, as: rupture of case, broken teeth etc., and the critical function may losing the elevator craning cage that stop is fallen, bring huge loss to people's life and property safety.
Utility model content
In order to overcome above-mentioned technological deficiency, the purpose of this utility model is to provide a kind of anti-falling safety device, be suitable for the running velocity requirement that elevator is wide in range, braking force expansion is good, overcomes the existing problem without the too high and misoperation of opening speed when protecting Ultra-Low Speed elevator braking of planetary speed increaser structure Anti-falling safety device for construction lift; And after elevator craning cage stop, only take the measure that cage upwards runs, the centrifugal mechanism of anti-falling safety device just can be made to be returned to initial off working state and automatically to discharge stop mechanism simultaneously, make anti-falling safety device automatically revert to initial adjustment state, thus overcome the various drawbacks that manual reset brings.
The technical scheme adopted that solves the problem is that the anti-falling safety device that automatically resets comprises convex housing, is arranged on the transmission gear of the large end cap outside of housing, is arranged on the centrifugal device in housing and friction stopping device; Housing is provided with brake port and limit switch triggers mouth, and the large end cap central authorities of housing are provided with the cylinder support to housing indent, and the transmission shaft be connected with transmission gear extends housing small end cover bearing through cylinder support and locates; Centrifugal device comprises centrifugal seat and centrifugal-block, and the cylinder support that centrifugal seat is enclosed within housing is located;
Friction stopping device comprise friction disc and be arranged on friction disc both sides with it with the use of first, second friction member, friction disc is enclosed within the strong connection of transmission with it on transmission shaft, its action is driven by transmission shaft, first, second friction member is enclosed within transmission shaft and does not connect with transmission shaft, and the end face connected with friction disc along transmission shaft circumference circumferentially extending is higher than friction disc, both exceed the position of friction disc and centrifugal seat is fixedly connected sequentially;
It is ball-screw that transmission shaft is positioned at the first friction member near one section of small end cover, ball-screw nut side matching used with it axial limiting, the disc spring group be enclosed within transmission shaft is provided with between the end face that opposite side connects with the first friction member and friction disc, ball-screw nut is provided with resistance bull stick fixing with it, the resistance bull stick other end is inserted into along transmission shafts in the resistance turn trough arranged on the first friction member, and resistance bull stick makes the first friction member and ball-screw nut synchronous axial system;
When elevator normally runs, friction stopping device drives centrifugal seat to rotate around cylinder support, and ball-screw nut does not produce the axial motion of compression disc spring group; During stop elevator duty, ball-screw nut axial motion compression disc spring group, makes the braking force of friction stopping device continue to increase stop elevator.
Centrifugal seat is the cylindricality ring of outside stage casing indent, and centrifugal-block is be arranged on the arc block that recess in centrifugal seat stage casing fits with it, and its one end is connected with centrifugal seat by locating dowel pin, and block part is passed through a speed governing stage clip group and is connected with centrifugal seat; Distance between whole speed governing stage clip group and locating dowel pin can adjust, by the distance between adjustment speed governing stage clip group and locating dowel pin, the running velocity that this product is suitable for elevator can be adjusted, when distance between the two more hour, the running velocity being suitable for elevator is lower, and the running velocity of this product elevator can be less than below 0.6m/s; Distance will expand between the two, be applicable to the operating needs of higher speed elevator to anti-falling safety device;
Described friction disc is formed with the ring-like friction part being arranged on cylindrical shell circumference circumferentially extending by being enclosed within the cylindrical shell that on transmission shaft, driving key connects with it;
First friction member adapts for being enclosed within shape and convex housing on transmission shaft, and both ends of the surface are the component of annulus, and its one end is enclosed within the cylindrical shell of friction disc, and end face connects with the ring-like friction part of friction disc, and the other end stretches to small end cover;
Second friction member is be enclosed within the annular arrangement friction lining that transmission shaft connects with the ring-like friction part of friction disc, and first, second friction member is fixed successively by multiple predetermincd tension adjustment bolt and centrifugal seat;
The utility model is when elevator normally works, and transmission shaft drives friction disc to rotate, thus drives the centrifugal seat be connected with first, second friction member to rotate; Ball-screw nut under the effect of resistance bull stick with the first friction member synchronous axial system, ball-screw nut does not produce the axial motion of compression disc spring group;
When elevator accelerates tenesmus, when the centnifugal force of centrifugal-block is greater than the pressure of speed governing stage clip group, centrifugal-block throws away from centrifugal seat, and centrifugal-block is stuck on the brake port of housing, and centrifugal seat is stopped operating; And touch limit switch, cut off machine operation loop thus; Centrifugal seat, the first friction member, the second friction member all stop the rotation, and ball-screw nut stops operating under the effect of resistance bull stick, and transmission shaft still rotates under the effect of the downward force of inertia of elevator, and ball-screw nut produces the axial motion of compression disc spring group; The gradual positive pressure that disc spring group produces is on friction stopping device, and the braking force of stop elevator is continued to increase, and promoting and demoting mechanism stops the most at last.
After elevator craning cage stop, only take the measure that cage upwards runs, the centrifugal mechanism of anti-falling safety device just can be made to be returned to initial off working state and automatically to discharge friction stopping device simultaneously, anti-falling safety device is made to automatically revert to initial adjustment state, thus overcome the various drawbacks that manual reset brings, have that product weight is light, compact conformation, a feature that braking force expansion is good.
Accompanying drawing explanation
Fig. 1 is the utility model schematic appearance;
Fig. 2 is the utility model structural representation;
Fig. 3 is B-B generalized section in the utility model Fig. 2.
Detailed description of the invention
Below in conjunction with drawings and embodiments, the utility model is described in further detail.
As shown in Figure 1 and Figure 2, one automatically resets anti-falling safety device, comprises convex housing 2, is arranged on the transmission gear 1 of housing large end cap 21 outside, is arranged on the centrifugal device in housing 2 and friction stopping device; Housing large end cap 21 central authorities are provided with the cylinder support 211 to housing indent, establish ball bearing of main shaft in cylinder support 211, and the transmission shaft 3 be connected with transmission gear 1 extends housing small end cover 22 bearing through cylinder support 211 and locates with it;
Centrifugal device 4 comprises centrifugal seat 41 and centrifugal-block 42, location in the cylinder support 211 that centrifugal seat 41 is enclosed within housing;
Centrifugal seat 41 is the cylindricality ring of stage casing, outside indent, and centrifugal seat 41 is enclosed within the cylinder support 211 of housing; The arc block that centrifugal-block 42 fits with it for being arranged on recess in centrifugal seat stage casing, its one end is connected with centrifugal seat 41 by locating dowel pin 43, and block part is connected with centrifugal seat 41 by a speed governing stage clip group 44; By the distance between adjustment speed governing stage clip group 44 and locating dowel pin 43, the running velocity that this product is suitable for elevator can be adjusted, when distance between the two more hour, the running velocity being suitable for elevator is lower, the running velocity of this product elevator can be less than below 0.6m/s, and the Ultra-Low Speed being suitable for elevator runs; Distance will expand between the two, be applicable to the operating needs of higher speed elevator to anti-falling safety device;
Friction stopping device comprise friction disc 5 and be arranged on friction disc both sides with it with the use of first, second friction member 6,7, friction disc 5 to be enclosed within transmission shaft 3 that transmission is strong with it connects, and drives its action by transmission shaft; First, second friction member 6,7 is enclosed within transmission shaft 3 and does not connect with it, and the end face connected with friction disc 5 along transmission shaft 3 circumference circumferentially extending is greater than friction disc 5, first, second friction member 6,7 exceeds the position of friction disc 5 along transmission shaft 3 circumference radial direction and centrifugal seat 41 is fixedly connected sequentially;
It is ball-screw 31 that transmission shaft 3 is positioned at the first friction member 6 near a section of small end cover 22, with ball-screw 31 matching used ball-screw nut 311 side by setscrew nut axial limiting, the disc spring group 9 be enclosed within transmission shaft 3 is provided with between the end face that opposite side connects with the first friction member 6 and friction disc 5, ball-screw nut 311 is provided with resistance bull stick 8 fixing with it, and resistance bull stick 8 other end is inserted on the first friction member 6 along in the axial resistance turn trough 61 arranged of transmission shaft 3; Resistance bull stick 8 makes the first friction member 6 and ball-screw nut 311 synchronous axial system, when ball-screw nut 311 moves axially along ball-screw 31, drives resistance bull stick 8 mobile in resistance bull stick slot 61;
Friction disc 5 is formed with the ring-like friction part being arranged on cylindrical shell circumference circumferentially extending by being enclosed within the cylindrical shell that on transmission shaft, driving key connects with it;
First friction member 6 adapts for being enclosed within shape and convex housing 2 on transmission shaft 3, and both ends of the surface are the component of annulus, and the cylindrical shell that its one end is enclosed within friction disc 5 is located, and end face connects with the ring-like friction part of friction disc, and the other end stretches to small end cover;
Second friction member 7 is for being enclosed within the annular arrangement friction lining that transmission shaft 3 connects with the ring-like friction part of friction disc 5; First, second friction member 6,7 is fixed successively by multiple predetermincd tension adjustment bolt and centrifugal seat 41;
Housing 2 is provided with the brake port 24 corresponding with centrifugal-block 42 and limit switch triggers mouth 23; This product is when elevator normally works, and transmission shaft 3 drives friction disc 5 to rotate, thus drives first, second friction member 6,7 and centrifugal seat 41 to rotate; Ball-screw nut 311 under the effect of resistance bull stick 8 with the first friction member 6 synchronous axial system, ball-screw nut 311 does not produce the axial motion of compression disc spring group 9;
When elevator accelerates tenesmus, when the centnifugal force of centrifugal-block 42 is greater than the pressure of speed governing stage clip group 44, centrifugal-block 42 throws away from centrifugal seat 41, and centrifugal-block 42 is stuck on the brake port 24 of housing, and centrifugal seat 41 is stopped operating; And touch limit switch 10, cut off machine operation loop thus; Centrifugal seat 41, first friction member 6, second friction member 7 all stops the rotation, ball-screw nut 311 stops operating under the effect of resistance bull stick 8, transmission shaft 3 still rotates under the effect of the downward force of inertia of elevator, and ball-screw nut 311 produces the axial motion of compression disc spring group 9; The gradual positive pressure that disc spring group 9 produces is on friction stopping device, and the braking force of stop elevator is continued to increase, and promoting and demoting mechanism stops the most at last.
After elevator craning cage stop, only take the measure that cage upwards runs, the centrifugal mechanism of anti-falling safety device just can be made to be returned to initial off working state and automatically to discharge friction stopping device simultaneously, anti-falling safety device is made to automatically revert to initial adjustment state, thus overcome the various drawbacks that manual reset brings, have that product weight is light, compact conformation, feature that braking force expansion is good, should vigorously promote the use.
Claims (4)
1. the anti-falling safety device that automatically resets, comprise convex housing, be arranged on the transmission gear of the large end cap outside of housing, be arranged on the centrifugal device in housing and friction stopping device, housing is provided with brake port and limit switch triggers mouth, it is characterized in that: the large end cap central authorities of housing are provided with the cylinder support to housing indent, and the transmission shaft be connected with transmission gear extends housing small end cover bearing through cylinder support and locates; Centrifugal device comprises centrifugal seat and centrifugal-block, and the cylinder support that centrifugal seat is enclosed within housing is located;
Friction stopping device comprise friction disc and be arranged on friction disc both sides with it with the use of first, second friction member, friction disc to be enclosed within transmission shaft that transmission is with it strong to be connected; First, second friction member is enclosed within transmission shaft and does not connect with transmission shaft, and the end face connected with friction disc along transmission shaft circumference circumferentially extending is higher than friction disc, and both exceed the position of friction disc and centrifugal seat is fixedly connected sequentially;
It is ball-screw that transmission shaft is positioned at the first friction member near one section of small end cover, and the ball-screw nut side axial limiting supporting with it, is provided with the disc spring group be enclosed within transmission shaft between the end face that opposite side connects with the first friction member and friction disc; Ball-screw nut is provided with resistance bull stick fixing with it, and the resistance bull stick other end is inserted on the first friction member along transmission shafts in the resistance turn trough arranged;
When elevator normally runs, friction stopping device drives centrifugal seat to rotate around cylinder support, and ball-screw nut does not produce the axial motion of compression disc spring group; During stop elevator duty, ball-screw nut axial motion compression disc spring group, makes the braking force of friction stopping device continue to increase stop elevator.
2. one according to claim 1 automatically resets anti-falling safety device, it is characterized in that: described friction disc is by being enclosed within transmission shaft the cylindrical shell that driving key with it connects and the ring-like friction part being arranged on cylindrical shell circumference circumferentially extending is formed;
First friction member adapts for being enclosed within shape and convex housing on transmission shaft, and both ends of the surface are the component of annulus, and its one end is enclosed within the cylindrical shell of friction disc, and end face connects with the ring-like friction part of friction disc, and the other end stretches to small end cover;
Second friction member is be enclosed within the annular arrangement friction lining that transmission shaft connects with the ring-like friction part of friction disc; First, second friction member is fixed by multiple predetermincd tension adjustment bolt and centrifugal seat.
3. one according to claim 1 automatically resets anti-falling safety device, it is characterized in that: described centrifugal seat is the cylindricality ring of stage casing, outside indent, centrifugal-block is be arranged on the arc block that recess in centrifugal seat stage casing fits with it, its one end is connected with centrifugal seat by locating dowel pin, and block part is connected with centrifugal seat by a speed governing stage clip group.
4. one according to claim 3 automatically resets anti-falling safety device, it is characterized in that: the distance between described whole speed governing stage clip group and locating dowel pin can adjust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520153940.4U CN204569060U (en) | 2015-03-18 | 2015-03-18 | One automatically resets anti-falling safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520153940.4U CN204569060U (en) | 2015-03-18 | 2015-03-18 | One automatically resets anti-falling safety device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204569060U true CN204569060U (en) | 2015-08-19 |
Family
ID=53861730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520153940.4U Withdrawn - After Issue CN204569060U (en) | 2015-03-18 | 2015-03-18 | One automatically resets anti-falling safety device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204569060U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106032234A (en) * | 2015-03-18 | 2016-10-19 | 赫仲伟 | Automatic reset anti-falling safety device |
| CN109592531A (en) * | 2018-11-29 | 2019-04-09 | 广州广日电梯工业有限公司 | It is a kind of with the overspeed preventer device for automatically replying function |
-
2015
- 2015-03-18 CN CN201520153940.4U patent/CN204569060U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106032234A (en) * | 2015-03-18 | 2016-10-19 | 赫仲伟 | Automatic reset anti-falling safety device |
| CN106032234B (en) * | 2015-03-18 | 2018-02-27 | 赫仲伟 | One kind automatically resets anti-falling safety device |
| CN109592531A (en) * | 2018-11-29 | 2019-04-09 | 广州广日电梯工业有限公司 | It is a kind of with the overspeed preventer device for automatically replying function |
| CN109592531B (en) * | 2018-11-29 | 2023-09-01 | 广州广日电梯工业有限公司 | Speed limiter device with automatic return function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150819 Effective date of abandoning: 20180227 |
|
| AV01 | Patent right actively abandoned |