CN212769234U - Elevator falling prevention mechanism and chain elevator - Google Patents
Elevator falling prevention mechanism and chain elevator Download PDFInfo
- Publication number
- CN212769234U CN212769234U CN202021598238.6U CN202021598238U CN212769234U CN 212769234 U CN212769234 U CN 212769234U CN 202021598238 U CN202021598238 U CN 202021598238U CN 212769234 U CN212769234 U CN 212769234U
- Authority
- CN
- China
- Prior art keywords
- elevator
- chain
- car
- base
- clamping wheel
- Prior art date
- 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
Links
Images
Abstract
The utility model discloses an elevator anti-falling mechanism and a chain elevator, wherein the elevator anti-falling mechanism comprises a safety gear fixedly arranged on a car, an electromagnet and a chain breaking switch; the chain-breaking switch comprises a trigger rod and a spring, and the trigger rod is tightly propped against the side surface of the elevator chain through the elasticity of the spring so as to enable the chain-breaking switch to be in a disconnected state; the safety tongs comprise a base and a clamping wheel; the base is provided with a vertical sliding chute, and the sliding chute of the base can slide up and down along a vertical guide rail in the elevator shaft through synchronous lifting of the base along the elevator car; an inner cavity communicated with the sliding groove is formed in the base, the clamping wheel is arranged in the inner cavity, and a fixed shaft at one end of the clamping wheel extends out of the strip-shaped guide hole in the side wall of the base; the upper end of the strip-shaped guide hole inclines upwards towards one side of the sliding chute; the telescopic shaft of the electromagnet is linked with the fixed shaft respectively, and the chain breaking switch is electrically connected with the electromagnet. The utility model provides high corresponding speed, in time lock the dead car, improved the factor of safety of elevator.
Description
Technical Field
The utility model relates to an elevator safety technical field, concretely relates to elevator prevents weighing down mechanism and chain elevator.
Background
The existing elevator anti-falling is mainly realized by a safety gear, wherein the safety gear is a safety device which emergently stops a car and clamps the car on a guide rail under the control of a speed limiter when the speed of the elevator exceeds the set limit speed of the speed limiter of the elevator or under the condition that a suspension rope is broken and loosened. It provides effective protection for the safe operation of the elevator.
Some elevator cars are pulled by a steel wire rope, and some elevator cars are pulled by a chain. For chain-traction type elevators, the chain normally pulls the car to move up and down. However, when the chain is broken, the chain breaking switch senses the chain, and then the corresponding mechanical actuating mechanism pulls the safety gear to lock the car, so that the falling is avoided. However, the mechanical actuator has the problem of delayed execution, the response speed is slow, and the locking of the elevator cannot be completed in the first time.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the elevator anti-falling mechanism can improve the corresponding speed, lock the car in time and improve the safety factor, and comprises a safety gear, an electromagnet and a chain breaking switch which are fixedly arranged on the car; the chain-breaking switch comprises a trigger rod and a spring, and the trigger rod is tightly propped against the side surface of the elevator chain through the elasticity of the spring so as to enable the chain-breaking switch to be in a disconnected state;
the safety tongs comprise a base and a clamping wheel; the base is provided with a vertical sliding chute, and the sliding chute of the base can slide up and down along a vertical guide rail in the elevator shaft through synchronous lifting of the base along the elevator car;
an inner cavity communicated with the sliding groove is formed in the base, the clamping wheel is arranged in the inner cavity, and a fixed shaft at one end of the clamping wheel extends out of the strip-shaped guide hole in the side wall of the base; the upper end of the strip-shaped guide hole inclines upwards towards one side of the sliding chute;
the telescopic shaft of the electromagnet is respectively linked with the fixed shaft, the chain breaking switch is electrically connected with the electromagnet, and the chain is broken and the chain breaking switch is communicated with the electromagnet to be electrified, so that the telescopic shaft pulls the clamping wheel to slide upwards along the strip-shaped guide hole in an inclined mode, and the lift car and the vertical guide rail are locked through the clamping wheel.
The beneficial effects of the utility model are embodied in:
once the chain is broken, the trigger rod of the chain-breaking switch is not blocked by the chain any more, the trigger rod swings under the elastic force of the spring, and two elastic sheets in the chain-breaking switch are switched on simultaneously, so that the chain-breaking switch is switched on. After the electromagnet is switched on, the electromagnet is electrified, and the telescopic shaft of the electromagnet retracts and pulls the fixed shaft to move obliquely upwards along the strip-shaped guide hole. The base is fixed with the car, and the car and the vertical guide rail are locked after the clamping wheel and the vertical guide rail are clamped. The clamping wheel is tightly clamped between the vertical guide rail and the sliding groove after moving upwards, and the heavier the car is, the larger the static friction force between the clamping wheel and the vertical guide rail is. The electromagnet replaces an existing mechanical actuating mechanism to directly pull the safety gear to execute an anti-falling instruction, so that the response speed is greatly increased, potential safety hazards caused by low response speed are avoided, and the safety factor is increased.
Preferably, the inner side wall of the inner cavity opposite to the sliding chute inclines upwards towards the sliding chute.
Preferably, the inner side wall is parallel to the strip-shaped guide hole.
The inside wall tightly blocks the tight wheel with the common top of strip guiding hole, and the inside wall has played the effect that further supports the tight wheel, has guaranteed not hard up condition can not appear in the locking state.
Preferably, a tension spring is further included; one end of the tension spring is connected with the fixed shaft and the other end of the tension spring is connected with the car.
When the clamping wheel is in a contact locking state, the tension spring pulls the fixed shaft to reset the clamping wheel.
Preferably, the telescopic shaft of the electromagnet is linked with the fixed shaft through a brake cable.
Preferably, the cross section of the vertical guide rail is in a T shape, and one of the three vertical side plates of the vertical guide rail is positioned in the sliding groove.
Preferably, the outer surface of the vertical side plate positioned in the sliding groove is provided with a friction surface contacted with the clamping wheel.
After the vertical guide rail is contacted with the clamping wheel, the static friction force of the clamping wheel can be greatly improved by the friction surface, and the safety factor is further improved.
The utility model also provides a chain elevator is applied to foretell elevator and prevents weighing down the mechanism, and the left side and the right side of car are equipped with a chain respectively and are connected with the actuating mechanism in the elevartor shaft.
Preferably, each dead chain of lock all is equipped with and is equipped with one respectively the elevator prevents weighing down the mechanism, and two chain break switch one-to-one ground contacts with two chains.
Preferably, two of the safety gears are respectively positioned at the left side and the right side of the car, and the safety gear at the left side is in contact with the vertical side plate at the left side of the car, and the safety gear at the right side is in contact with the vertical side plate at the right side of the car.
The chain elevator adopts double chains to drive the lift car, the double chains correspond to the double-elevator anti-falling mechanisms, each chain is respectively provided with one elevator anti-falling mechanism, and the two elevator anti-falling mechanisms act synchronously. Namely, as long as a chain breaks, two elevator anti-falling mechanisms can execute the locking action, and the safety factor is higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a schematic view of a chain-mounted elevator according to an embodiment;
FIG. 2 is a schematic view showing a connection structure of safety tongs and a vertical guide rail according to the first embodiment;
fig. 3 is a perspective view of fig. 2.
In the attached drawings, a safety gear 1, an electromagnet 2, a chain breaking switch 3, a trigger rod 4, a chain 5, a base 6, a clamping wheel 7, a vertical guide rail 8, a sliding groove 9, a strip-shaped guide hole 10, an inner cavity 11, a fixed shaft 12, a brake cable 13 and a car 14.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
The first embodiment is as follows:
as shown in fig. 1 to 3, the first embodiment provides an elevator anti-falling mechanism, which comprises a safety gear 1 fixedly mounted on a car 14, an electromagnet 2 and a chain-breaking switch 3. The chain breaking switch 3 is a travel switch and comprises a trigger rod 4 and a spring, the spring is installed inside the chain breaking switch 3, the trigger rod 4 is tightly propped against the side face of the elevator chain 5 through the elastic force of the spring, and then the chain breaking switch 3 is in a disconnected state. The chain 5 which is always tensioned by the trigger rod 4 of the travel switch is tightly propped, so that the travel switch is in a normal end state. Once the chain 5 is broken, the trigger rod 4 of the chain-breaking switch 3 is no longer blocked by the chain 5, and the trigger rod 4 will swing under the elastic force of the spring, and simultaneously turn on the two elastic sheets inside the chain-breaking switch 3, so as to turn on the chain-breaking switch 3, and then be in the on state.
The safety gear 1 comprises a base 6 and a gripping wheel 7. The base 6 is provided with a vertical sliding chute 9, and the base 6 synchronously ascends and descends along with the car 14, so that the sliding chute 9 of the base 6 slides up and down along a vertical guide rail 8 in an elevator shaft. Further, an inner cavity 11 communicated with the sliding groove 9 is formed in the base 6, the clamping wheel 7 is installed in the inner cavity 11, and a fixing shaft 12 at one end of the clamping wheel 7 extends out of a strip-shaped guide hole 10 in the side wall of the base 6. The upper end of the strip-shaped guide hole 10 inclines upwards towards one side of the sliding chute 9, the inner side wall of the inner cavity 11, which is opposite to the sliding chute 9, inclines upwards towards the direction of the sliding chute 9, and the inner side wall is parallel to the strip-shaped guide hole 10. The telescopic shafts of the electromagnets 2 are respectively linked with the fixed shaft 12, and specifically, the telescopic shafts of the electromagnets 2 are linked with the fixed shaft 12 through brake cables 13.
The circuit in this embodiment is connected: the chain breaking switch 3 is electrically connected with the electromagnet 2, the chain 5 is broken, the chain breaking switch 3 is communicated with the electromagnet 2 to be electrified, and therefore the telescopic shaft pulls the clamping wheel 7 to slide upwards along the strip-shaped guide hole 10 in an inclined mode, and the car 14 and the vertical guide rail 8 are locked through the clamping wheel 7. Principle of this embodiment to lock car 14: the chain 5 is broken, the chain breaking switch 3 is switched on, the electromagnet 2 is powered on after the chain breaking switch is switched on, and the telescopic shaft of the electromagnet 2 retracts and pulls the fixed shaft 12 to move obliquely upwards along the strip-shaped guide hole 10. The base 6 is fixed with the car 14, and the car 14 and the vertical guide rail 8 are locked after the clamping wheel 7 is clamped with the vertical guide rail 8. After moving upwards, the clamping wheel 7 is tightly clamped between the vertical guide rail 8 and the sliding groove 9, and the heavier the car 14 is, the larger the static friction force between the clamping wheel 7 and the vertical guide rail 8 is. The electromagnet 2 replaces an existing mechanical actuating mechanism to directly pull the safety gear 1 to execute an anti-falling instruction, so that the response speed is greatly increased, potential safety hazards caused by low response speed are avoided, and the safety factor is increased. After the contact danger, chucking wheel 7 needs to reset, and this embodiment still includes the extension spring, the one end of extension spring with fixed axle 12 is connected and other one end is connected with car 14. In the contact locking state, the tension spring pulls the fixed shaft 12 to reset the chucking wheel 7.
In order to further improve the locking effect of the clamping wheel 7, the cross section of the vertical guide rail 8 is "T" shaped in this embodiment, and one of the three vertical side plates of the vertical guide rail 8 is located in the sliding groove 9. The outer surface of the vertical side plate in the sliding groove 9 is provided with a friction surface contacted with the clamping wheel 7. After the vertical guide rail 8 is contacted with the clamping wheel 7, the static friction force of the clamping wheel 7 can be greatly improved by the friction surface, and the safety factor is further improved.
Example two:
as shown in fig. 1, the second embodiment provides a chain 5 elevator, which is applied to the elevator anti-falling mechanism of the first embodiment, and the reference numerals of the second embodiment are the same as those of the first embodiment, and share the same reference numeral as fig. 1. The left and right sides of the car 14 are each provided with a chain 5 connected to the drive mechanism in the elevator shaft. Each of the dead lock chains 5 is provided with one elevator falling prevention mechanism, and the two chain breaking switches 3 are in one-to-one correspondence to be in contact with the two chains 5. Two of the safety gear 1 are located on the left and right side of the car 14, respectively, and the safety gear 1 on the left side is in contact with the vertical side plate on the left side of the car 14, and the safety gear 1 on the right side is in contact with the vertical side plate on the right side of the car 14. The chain 5 elevator adopts double chains 5 to drive the car 14, the double chains 5 correspond to double elevator anti-falling mechanisms, each chain 5 is respectively provided with one elevator anti-falling mechanism, and the two elevator anti-falling mechanisms act synchronously. Namely, as long as a chain 5 breaks, the two elevator anti-falling mechanisms can perform locking actions, and the safety factor is higher.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (10)
1. The utility model provides an elevator prevents weighing down mechanism which characterized in that: comprises a safety gear fixedly arranged on a lift car, an electromagnet and a chain breaking switch; the chain-breaking switch comprises a trigger rod and a spring, and the trigger rod is tightly propped against the side surface of the elevator chain through the elasticity of the spring so as to enable the chain-breaking switch to be in a disconnected state;
the safety tongs comprise a base and a clamping wheel; the base is provided with a vertical sliding chute, and the sliding chute of the base can slide up and down along a vertical guide rail in the elevator shaft through synchronous lifting of the base along the elevator car;
an inner cavity communicated with the sliding groove is formed in the base, the clamping wheel is arranged in the inner cavity, and a fixed shaft at one end of the clamping wheel extends out of the strip-shaped guide hole in the side wall of the base; the upper end of the strip-shaped guide hole inclines upwards towards one side of the sliding chute;
the telescopic shaft of the electromagnet is respectively linked with the fixed shaft, the chain breaking switch is electrically connected with the electromagnet, and the chain is broken and the chain breaking switch is communicated with the electromagnet to be electrified, so that the telescopic shaft pulls the clamping wheel to slide upwards along the strip-shaped guide hole in an inclined mode, and the lift car and the vertical guide rail are locked through the clamping wheel.
2. The elevator fall arrest mechanism according to claim 1, wherein: the inner cavity and the inner side wall opposite to the sliding groove incline upwards towards the sliding groove.
3. The elevator fall arrest mechanism according to claim 2, wherein: the inner side wall is parallel to the strip-shaped guide hole.
4. The elevator fall arrest mechanism according to claim 1, wherein: also comprises a tension spring; one end of the tension spring is connected with the fixed shaft and the other end of the tension spring is connected with the car.
5. The elevator fall arrest mechanism according to claim 1, wherein: and the telescopic shaft of the electromagnet is linked with the fixed shaft through a brake cable.
6. The elevator fall arrest mechanism according to claim 1, wherein: the cross section of the vertical guide rail is T-shaped, and one of the three vertical side plates of the vertical guide rail is positioned in the sliding groove.
7. The elevator fall arrest mechanism according to claim 6, wherein: and the outer surface of the vertical side plate positioned in the sliding groove is provided with a friction surface contacted with the clamping wheel.
8. A chain elevator, characterized in that: the elevator falling-preventing mechanism is applied to any one of claims 1-7, and a chain is respectively arranged on the left side and the right side of the car and is connected with a driving mechanism in an elevator shaft.
9. The chain elevator according to claim 8, characterized in that: each dead chain of lock all is equipped with one respectively the elevator prevents weighing down the mechanism, and two chain rupture switches contact with two chains one-to-one.
10. The chain elevator according to claim 9, characterized in that: two the safety gear is located the left side and the right side of car respectively, and left safety gear and the left vertical side board contact of car to and the safety gear on right side and the vertical side board contact on car right side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021598238.6U CN212769234U (en) | 2020-08-03 | 2020-08-03 | Elevator falling prevention mechanism and chain elevator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021598238.6U CN212769234U (en) | 2020-08-03 | 2020-08-03 | Elevator falling prevention mechanism and chain elevator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212769234U true CN212769234U (en) | 2021-03-23 |
Family
ID=75040562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021598238.6U Expired - Fee Related CN212769234U (en) | 2020-08-03 | 2020-08-03 | Elevator falling prevention mechanism and chain elevator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212769234U (en) |
-
2020
- 2020-08-03 CN CN202021598238.6U patent/CN212769234U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101759076B (en) | Elevator buffer | |
| CN102674108B (en) | Electronic control brake device for elevator cage | |
| WO2011052053A1 (en) | Emergency stop device for elevators | |
| CN201495246U (en) | Lifting trolley for preventing an oxygen lance from dropping | |
| US20150083527A1 (en) | Back-up brake system of lifts | |
| CN202643033U (en) | Electronic control elevator car braking device | |
| JP2006290514A (en) | Rope brake device for elevator | |
| WO2017094102A1 (en) | Elevator device | |
| CN1970420A (en) | Protection device for over-speed ascending for elevator | |
| CN104724565A (en) | Elevator brake device with trigger mechanism | |
| JP4672656B2 (en) | Elevator safety device | |
| CN201043112Y (en) | Elevator for building construction | |
| CN112225032A (en) | Automatic brake device that elevator was prevented falling | |
| CN203158967U (en) | Elevator safety protection device | |
| CN212769234U (en) | Elevator falling prevention mechanism and chain elevator | |
| CN102514994A (en) | Safety protection device for elevator | |
| CN114249204A (en) | Safety tongs for multi-car parallel elevator | |
| CN109019241B (en) | Elevator device and triggering method for elevator protection | |
| CN201043113Y (en) | Anti-break rope elevator | |
| WO2014200122A1 (en) | Constant operation type safety brake device for elevator | |
| CN204310633U (en) | The dynamic apparatus for lift of curve motion | |
| CN104477727A (en) | Safety clamp for curvilinearly-running elevator | |
| CN202272598U (en) | Ceiling ejection preventing protection device for elevator car | |
| CN219792093U (en) | Anti-collision safety device of construction elevator | |
| CN108928707A (en) | Cargo lift assembly |
Legal Events
| 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: 20210323 Termination date: 20210803 |