CN211945797U - Elevator anti-falling device and elevator safety protection device - Google Patents
Elevator anti-falling device and elevator safety protection device Download PDFInfo
- Publication number
- CN211945797U CN211945797U CN202020114372.8U CN202020114372U CN211945797U CN 211945797 U CN211945797 U CN 211945797U CN 202020114372 U CN202020114372 U CN 202020114372U CN 211945797 U CN211945797 U CN 211945797U
- Authority
- CN
- China
- Prior art keywords
- elevator
- safety
- weight
- falling
- lifting
- 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.)
- Active
Links
Images
Landscapes
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The utility model discloses an elevator anti-falling device for carry and draw the action of triggering elevator safety tongs, elevator anti-falling device includes pouring weight, fixed frame, impeller and compression spring, and wherein fixed frame is used for installing the pouring weight, and pouring weight relatively fixed frame can reciprocate, and the impeller is fixed to be used for promoting on the pouring weight and triggers safety tongs pulling mechanism action, and compression spring sets up in the pouring weight below by pouring weight gravity compression. The utility model also provides an elevator safety arrangement. The utility model provides an elevator anti-falling device, structural design is reasonable, ingenious, and is with low costs, and the security performance is high, can respond to weightless state and trigger the safety tongs action in the twinkling of an eye when the elevator has the risk of falling, and does not influence the normal operating of current elevator safety parts.
Description
Technical Field
The utility model relates to an elevator technical field, concretely relates to elevator anti-falling device and elevator safety arrangement.
Background
The safety tongs and the speed limiter are safety protection devices of the elevator, in the running process of the elevator, when the running speed of the elevator exceeds the running speed allowed by the elevator, the speed limiter can be triggered to act, a speed limiter steel wire rope enables the elevator safety tongs to act through an elevator safety tongs lifting mechanism, and the elevator car is decelerated and braked and stopped by the action of the safety tongs.
The prior elevator safety protection device has the following problems in the using process:
when the running speed of the elevator reaches 115% of the rated speed, the speed limiter is triggered to act, the elevator safety gear lifting mechanism can be driven to pull the safety gear to act, the car is stopped, the action of the safety gear lags for a long time, and therefore the car can fall down to several floors. And the overspeed governor has many failure factors, such as foreign matter gets into the overspeed governor wheel, wire rope wearing and tearing, wire rope slip pine take off etc. therefore the elevator still has the risk that the overspeed falls.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that prior art exists, the utility model provides an elevator anti-falling device, structural design is reasonable, ingenious, and is with low costs, and the security performance is high, can respond to weightless state and trigger the safety tongs action in the twinkling of an eye when the elevator has the risk of falling, and the reaction is fast, and sensitivity is high, and does not influence the normal operating of current elevator safety part.
The utility model discloses a following technical scheme realizes: the elevator anti-falling device is used for lifting and triggering elevator safety tongs to act and comprises a heavy block, a fixed frame, a pushing piece and a compression spring, wherein the fixed frame is used for installing the heavy block, the heavy block can move up and down relative to the fixed frame, the pushing piece is fixed on the heavy block and used for pushing and triggering the safety tongs lifting mechanism to act, and the compression spring is arranged below the heavy block and compressed by the weight of the heavy block.
The utility model discloses elevator anti-falling device has the risk of falling or is in when the state of falling completely at the elevator, the pouring weight will be in slight weightlessness or serious weightlessness state with elevator car, the pouring weight is exerted in the decurrent pressure of compression spring and is reduced and disappears even, compression spring loses the external pressure reconversion, the pouring weight upwards moves under the effect of compression spring resilience force, the impeller of fixing on the pouring weight upwards promotes safety tongs lifting mechanism and carries the action of carrying safety tongs, clip the guide rail and make elevator car emergency braking.
Furthermore, the fixed frame comprises a first support plate and a second support plate which are respectively arranged above and below the weight block; the fixed guide bar that is provided with on the pouring weight, the guide bar runs through pouring weight and two backup pads, the pouring weight reciprocates along the relative fixed frame of guide bar.
Furthermore, a guide groove is formed in the fixed frame, a guide protrusion is arranged on the heavy block in a position opposite to the guide groove, and the heavy block moves up and down along the guide groove relative to the fixed frame.
Furthermore, anti-falling parts are arranged at two ends of the guide rod to prevent the guide rod from falling off the support plate.
Furthermore, a return spring for helping the weight to return is arranged above the weight.
Furthermore, a guide sleeve is sleeved on the guide rod, and the compression spring is sleeved on the guide sleeve.
Furthermore, the pushing piece is an L-shaped bending plate, a bending surface is fixedly connected with the weight, and a yielding notch avoiding the pushing piece is arranged on the fixed frame so as to ensure smooth movement of the pushing piece.
The utility model also provides an elevator safety arrangement, including safety tongs and with the safety tongs of safety tongs looks adaptation carry the mechanism to and elevator anti-falling device, elevator anti-falling device promotes to trigger the safety tongs is carried and is carried the mechanism action, thereby carries to draw and triggers the safety tongs action.
Furthermore, a plurality of safety tongs can be arranged and are symmetrically arranged on two sides of the car frame, and a synchronous connecting rod is arranged between the corresponding safety tong lifting mechanisms to realize synchronous action of the safety tongs.
Furthermore, the safety tongs lifting mechanism comprises a lifting rod and a lifting handle, one end of the lifting rod is fixedly connected with the safety tongs, the other end of the lifting rod is fixedly connected with the lifting handle, the elevator anti-falling device is installed below the lifting handle, and the pushing piece is arranged below one end, close to the lifting rod, of the lifting handle.
The utility model has the advantages that: the elevator anti-falling device can instantly sense the weightlessness state, triggers the safety tongs to act before the elevator does not reach the 115 percent rated speed of the speed limiter, has quick response and high sensitivity, effectively reduces the falling risk of the elevator, and avoids the situation that the elevator car is stopped only by falling several floors; the elevator falling-preventing device is arranged under the lifting handle, gaps are reserved between each part and the safety gear lifting mechanism and are not in contact with each other, and the elevator falling-preventing device cannot interfere with the normal function of the existing elevator safety part.
Drawings
Fig. 1 is a schematic view of the installation structure of the elevator safety protection device of the utility model;
FIG. 2 is a schematic view of the installation position of the elevator anti-falling device of the present invention;
FIG. 3 is a schematic structural view of the elevator falling preventing device of the present invention;
FIG. 4 is a front view of the elevator anti-falling device of the present invention;
FIG. 5 is a schematic view of the elevator falling preventing device of the present invention during normal operation of the elevator;
fig. 6 is the schematic view of the elevator anti-falling device of the utility model when the elevator falls in an overspeed way.
In the figure: 1. an upper beam; 2. a lower beam; 3. safety tongs; 41. a synchronous connecting rod; 42. lifting the handle rotating shaft; 43. Lifting a handle; 44. lifting a pull rod; 5. an elevator fall preventing device; 51. a weight block; 52. a guide sleeve; 53. a guide bar; 54. a side sealing plate; 55. a compression spring; 56. a first support plate; 56a, an abdication gap; 57. a second support plate; 58. a pusher member; 59. a drop-off prevention member; 510. a return spring.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings.
As shown in fig. 1-4, an elevator safety protection device comprises safety tongs 3 symmetrically arranged on two sides of a car frame, a safety tong lifting mechanism matched with each safety tong 3 and an elevator anti-falling device 5 matched with the safety tong lifting mechanism are correspondingly arranged above each safety tong 3. The safety gear 3 is arranged below the lower beam 2, and when the lift car is weightless due to abnormal operation speed of the lift, the anti-falling device 5 of the lift pushes the lifting mechanism of the safety gear to act, so that the corresponding safety gear 3 is lifted to stop the lift car. A synchronous connecting rod 41 is also arranged between the two safety gear lifting mechanisms to realize the synchronous lifting action of the safety gears 3 at the two sides of the car frame.
The safety gear lifting mechanism comprises a lifting rod 44 and a lifting handle 43, one end of the lifting rod 44 is fixedly connected with the safety gear 3, the other end of the lifting rod is fixedly connected with one end of the lifting handle 43, a lifting handle rotating shaft 42 is arranged at the other end of the lifting handle 43, and the synchronous connecting rod 41 is rotatably connected with the lifting handle 43 through the lifting handle rotating shaft 42.
The elevator fall arrest device 5 comprises a weight 51, a fixed frame, a push member 58 and a compression spring 55. The fixed frame is used for installing a weight 51, and the weight 51 is arranged below the lifting handle 43 and can move up and down relative to the fixed frame. The pushing piece 58 is fixed on the weight 51 and moves along with the up-and-down movement of the weight 51, and is used for pushing the trigger lifting handle 43 to act. The compression spring 55 is disposed below the weight 51 and is compressed by the weight 51.
The fixing frame in this embodiment includes the first supporting plate 56 and the second supporting plate 57 separately disposed above and below the weight 51, and the two side sealing plates 54 fixed to the ends of the two supporting plates for sealing the two supporting plates, and when the elevator anti-falling device 5 is installed, only the two side sealing plates 54 are connected to the corresponding upper beam 1 by bolts, so that the operation is convenient and time-saving. The weight 51 is fixedly provided with a guide rod 53, the guide rod 53 penetrates through the weight 51 and the two support plates, and the weight 51 moves up and down along the guide rod 53 relative to the fixed frame. In addition, a return spring 510 for assisting the return of the weight 51 is provided above the weight 51.
The guide rods 53 in the embodiment are arranged in two numbers and symmetrically arranged on the weight block 51, so that the weight block can move up and down more stably and smoothly, and meanwhile, the guide rods 53 and the lifting handle 43 are prevented from colliding and rubbing in the up-and-down moving process of the weight block 51, and the normal function of the existing safety part is not influenced. The two ends of the guide rod are provided with anti-dropping parts 59, the two ends of the guide rod 53 are provided with threads in the embodiment, the anti-dropping parts 59 are nuts and are of double-nut reinforcing structures, and are fixedly connected with the threads at the two ends of the guide rod 53 to prevent the guide rod 53 from dropping out of the supporting plate. The guide rod 53 is sleeved with a guide sleeve 52, the compression spring 55 and the return spring 510 are sleeved on the guide sleeve 52, the compression spring 55 is arranged between the bottom of the weight 51 and the second supporting plate 57, and the return spring 510 is arranged between the anti-falling piece 59 and the first supporting plate 56.
The guide sleeve 52 is arranged to fix the weight 51 and the guide rod 53; on the other hand, the surface of the guide sleeve 52 is smooth and can be matched with the holes on the two support plates to drive the weight 51 to move up and down. In addition, the structure of the guide sleeve can be eliminated, but the weight 51 and the guide rod 53 need to be fixedly connected into a whole, and the surface of the guide rod 53 needs to be kept smooth, so that the guide rod 53 is prevented from generating large resistance due to friction with holes on the two support plates, and the weight 51 cannot normally move up and down.
As shown in fig. 3 and 4, the pushing member 58 in this embodiment is an L-shaped bending plate, one bending surface is fixedly connected with the weight 51 through a bolt, and the other bending surface is bent toward the direction 5 of the lifting handle 43. The pushing piece 58 is arranged below one end of the lifting handle 43 close to the lifting rod 44, so that the pushing and triggering actions of the lifting handle 43 are more labor-saving and sensitive. The first support plate 56 is provided with a relief notch 56a for avoiding the pushing member 58 to ensure smooth movement of the pushing member 58.
The elevator anti-falling device can be flexibly arranged according to the size of the space below the lifting handle 43, and when the space below the lifting handle 43 is large and a large weight can be arranged, the elevator anti-falling device can also be arranged corresponding to one safety gear without corresponding arrangement of each safety gear.
As shown in fig. 5, when the elevator is in normal operation, the weight 51 is under the action of gravity, the compression spring 55 sandwiched between the bottom of the weight 51 and the second support plate 57 and the return spring 510 sandwiched between the anti-falling piece 59 and the first support plate 56 are compressed under the action of the gravity of the weight 51, the pushing piece 58 and the lifting handle 43 keep a certain distance, and the lifting handle 43 is not pushed to trigger.
As shown in fig. 6, when the elevator has a falling risk, the weight 51 and the elevator car are in a slightly weightless or severely weightless state, the downward pressure applied by the weight 51 to the compression spring 55 and the return spring 510 is reduced or even disappears, the compression spring 55 and the return spring 510 lose the external pressure and restore to the original state, the weight 51 moves upward under the resilience force of the compression spring 55 and the return spring 510, the pushing piece 58 fixed on the weight 51 also moves upward to push the lifting handle 43 to rotate upward around the lifting handle rotating shaft 42, the lifting rod 44 fixed at the other end of the lifting handle 43 is driven to lift the safety gear 3 to act, and the guide rail is clamped to make the elevator car brake emergently.
After the elevator car is braked emergently by the safety gear 3, the car stops falling downwards, the weight 51 is restored to the normal gravity state, the compression spring 55 and the return spring 510 are compressed again under the gravity of the weight 51, the weight 51 is restored to the state shown in fig. 5, and the pushing piece 58 and the lifting handle 43 are kept at a certain distance again. At the moment, the safety tongs 3 clamp the guide rail and cannot automatically reset, the lift car does not move downwards and fall down any more, and the rescue workers can wait for troubleshooting and recovery.
In addition, replace the guide bar for guide way and direction arch do the utility model discloses another embodiment of elevator anti-falling device. Specifically, a guide groove is formed in the fixed frame, a guide protrusion is arranged on the heavy block at a position opposite to the guide groove, and the heavy block can move up and down along the guide groove relative to the fixed frame through the matching of the guide protrusion and the guide groove.
The elevator anti-falling device can instantly sense the weightlessness state, and trigger the safety tongs to act before the elevator does not reach the 115 percent rated speed of the speed limiter, so that the elevator falling risk is reduced, and the condition that the car is stopped only after falling several floors is avoided; the elevator anti-falling device is arranged right below the lifting handle, gaps are reserved between each part and the safety gear lifting mechanism and are not in contact with each other, and the elevator anti-falling device cannot interfere with the normal function of the conventional elevator safety part; in addition, the elevator anti-falling device can avoid the accidental falling of the car under the condition that the speed limiter and the speed limiter steel wire rope break down, and the safety protection effect of the elevator is enhanced.
Appropriate changes and modifications to the embodiments described above will become apparent to those skilled in the art from the disclosure and teachings of the foregoing description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. The utility model provides an elevator anti-falling device for carry and draw and trigger elevator safety tongs action, its characterized in that, elevator anti-falling device includes:
the weight block can move up and down relative to the fixed frame;
the pushing piece is fixed on the weight block and used for pushing and triggering the safety gear lifting mechanism to act;
and the compression spring is arranged below the weight and compressed by the weight.
2. The elevator fall arrest device according to claim 1, wherein the fixed frame includes first and second support plates disposed above and below the weight; the fixed guide bar that is provided with on the pouring weight, the guide bar runs through pouring weight and two backup pads, the pouring weight reciprocates along the relative fixed frame of guide bar.
3. The fall preventing device for an elevator as claimed in claim 1, wherein the fixing frame is provided with a guide groove, and the weight is provided with a guide projection at a position opposite to the guide groove, and moves up and down along the guide groove relative to the fixing frame.
4. The elevator fall preventing device according to claim 2, wherein the guide rod is provided with a falling preventing member at both ends.
5. The elevator fall preventing device according to claim 1, wherein a return spring is provided above the weight to assist the weight in returning.
6. The elevator fall preventing device according to claim 2, wherein a guide sleeve is sleeved on the guide rod, and the compression spring is sleeved on the guide sleeve.
7. The elevator fall preventing device according to claim 1, wherein the pushing member is an L-shaped bending plate, wherein a bending surface is fixedly connected with the weight, and the fixing frame is provided with a yielding notch for avoiding the pushing member.
8. An elevator safety protection device comprises safety tongs and a safety tong lifting mechanism matched with the safety tongs, and is characterized in that at least one group of elevator anti-falling devices according to any one of claims 1 to 7 are further arranged, and the elevator anti-falling devices push and trigger the safety tong lifting mechanism to act, so that the safety tongs are lifted and triggered to act.
9. The elevator safety protection device according to claim 8, wherein a plurality of safety tongs can be arranged, the safety tongs are symmetrically arranged on two sides of the car frame, and a synchronous connecting rod is further arranged between each corresponding safety tong lifting mechanism to realize synchronous action of the safety tongs.
10. The elevator safety protection device according to claim 8, wherein the safety gear lifting mechanism comprises a lifting rod and a lifting handle, one end of the lifting rod is fixedly connected with the safety gear, the other end of the lifting rod is fixedly connected with the lifting handle, the elevator anti-falling device is arranged below the lifting handle, and the pushing piece is arranged below one end, close to the lifting rod, of the lifting handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020114372.8U CN211945797U (en) | 2020-01-17 | 2020-01-17 | Elevator anti-falling device and elevator safety protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020114372.8U CN211945797U (en) | 2020-01-17 | 2020-01-17 | Elevator anti-falling device and elevator safety protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211945797U true CN211945797U (en) | 2020-11-17 |
Family
ID=73173304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020114372.8U Active CN211945797U (en) | 2020-01-17 | 2020-01-17 | Elevator anti-falling device and elevator safety protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211945797U (en) |
-
2020
- 2020-01-17 CN CN202020114372.8U patent/CN211945797U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102862893B (en) | Lifting plier device of elevator car | |
| CN110173104B (en) | Anti-falling structure attached with lifting scaffold | |
| US5363942A (en) | Braking device for an elevator | |
| CN101759076B (en) | Elevator buffer | |
| EP2212230B1 (en) | Elevator | |
| WO2016058256A1 (en) | Weightless safety clamp | |
| CN105819302B (en) | Rope brake | |
| CN107673159B (en) | Speed limiter of elevator | |
| US20180297814A1 (en) | Elevator apparatus | |
| CN105480812A (en) | Power-losing trigger type steel wire rope brake and braking method thereof | |
| JPS6017753B2 (en) | Automatic fall protection device for power-driven elevators | |
| CN100460307C (en) | Bidirection overspeed protective device of elevator | |
| US2274000A (en) | Elevator safety apparatus | |
| JP2012180204A (en) | Elevator apparatus | |
| EP3929132A1 (en) | Safety brake for elevator, lifting device including safety brake, and method for braking a lifting device by said safety brake | |
| JP2012111591A (en) | Elevator device | |
| CN112225032A (en) | Automatic brake device that elevator was prevented falling | |
| CN211945797U (en) | Elevator anti-falling device and elevator safety protection device | |
| NO320636B1 (en) | Device for stopping an elevator | |
| CN205772613U (en) | Rope brake | |
| CN105480811A (en) | Rope gripper | |
| US2490653A (en) | Safety mechanism for elevators | |
| CN111039123A (en) | Elevator anti-falling device and elevator safety protection device | |
| CN106995173B (en) | The restored method of restraint device, the elevator for having restraint device and restraint device | |
| JP4115035B2 (en) | Safety equipment for lifts for construction works |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210528 Address after: Room 305-w, 3rd floor, No.11 Lane 1888, Caoyang Road, Putuo District, Shanghai 200333 Patentee after: Xin Xi'ao Elevator Group Co.,Ltd. Address before: No.46, Qichao Road, Chang'an Town (Nongfa District), Haining City, Jiaxing City, Zhejiang Province Patentee before: ZHEJIANG XIZI HEAVY INDUSTRY MACHINERY Co.,Ltd. |
|
| TR01 | Transfer of patent right |