CN116767995A - Elevator safety guide device - Google Patents
Elevator safety guide device Download PDFInfo
- Publication number
- CN116767995A CN116767995A CN202310715348.8A CN202310715348A CN116767995A CN 116767995 A CN116767995 A CN 116767995A CN 202310715348 A CN202310715348 A CN 202310715348A CN 116767995 A CN116767995 A CN 116767995A
- Authority
- CN
- China
- Prior art keywords
- wedge
- assembly
- wedge block
- shoe
- roller
- 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.)
- Pending
Links
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Landscapes
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses an elevator safety guiding device, comprising: the safety tongs comprise a safety tongs frame, a tongs body assembly, a bolt assembly, a linkage shaft and a lifting pull rod; the clamp body assembly comprises a U-shaped spring, and a roller assembly, a movable wedge block assembly and a fixed wedge block which are symmetrically arranged; the fixed wedge block is fixed on the U-shaped spring through a bolt assembly; the roller assembly is arranged between the fixed wedge block and the movable wedge block assembly; the movable wedge block assembly consists of a movable wedge block, a shoe liner and a wedge block backboard, wherein the movable wedge block can horizontally move relative to the shoe liner, and the linkage shaft is connected with the shoe liner; when the elevator normally operates, the movable wedge blocks and the shoe liners keep a certain gap with the guide rail, so that the guiding function of the elevator car is realized; when the elevator is braked suddenly, the movable wedge blocks protrude out of the surfaces of the shoe liners and clamp the guide rails, so that the braking function of the elevator car is realized.
Description
Technical Field
The invention relates to the field of elevators, in particular to an elevator safety guide device.
Background
The elevator safety gear is one of the key devices of the elevator safety protection system, is usually fixed on an elevator car, and when the elevator runs abnormally and triggers the speed limiter to act, the lifting mechanism pulls the safety gear wedge block to clamp the elevator guide rail so as to brake the car. When the clearance between the wedge block and the guide rail of the safety gear is improper (the clearance is controlled to be more than 2mm in general technical requirements), the safety gear can malfunction.
During elevator lifting, the guide shoe is used between the elevator car and the guide rail to limit the relative motion between the elevator car and the guide rail to guide the elevator to run stably. The clearance between the sliding shoe lining and the guide rail is very small, limiting can be performed through rubber, a rigid support or bolts under the limit condition, the stable running posture of the car is ensured, the clearance between the wedge block of the safety tongs and the guide rail meets the requirement, and misoperation is prevented.
Most safety tongs of elevators are configured independently of guide shoes, the guide shoes are arranged on the lower sides of the safety tongs, the gap between a wedge block of the safety tongs and a guide rail is generally smaller than the gap between the guide shoes and the guide rail, the safety tongs and the guide shoes are inconvenient to adjust, and the accuracy is not high. Due to the abrasion of the shoe liner of the guide shoe, the extreme unbalanced load of the elevator and the like, the centering condition of the wedge block of the safety tongs and the guide shoe is poor, and the guide rail is scratched or the safety tongs are easy to malfunction.
Disclosure of Invention
The invention aims to solve the technical problem of providing an integrated device capable of realizing guiding and emergency braking so as to reduce the manufacturing and mounting processes of components.
In order to solve the above technical problems, the present invention provides an elevator safety guide device, including: the safety tongs comprise a safety tongs frame, a tongs body assembly, a bolt assembly, a linkage shaft and a lifting pull rod;
the clamp body assembly comprises a U-shaped spring, and a roller assembly, a movable wedge block assembly and a fixed wedge block which are symmetrically arranged; the fixed wedge block is fixed on the U-shaped spring through a bolt assembly; the roller assembly is arranged between the fixed wedge block and the movable wedge block assembly;
the movable wedge block assembly consists of a movable wedge block, a shoe liner and a wedge block backboard, wherein the movable wedge block can horizontally move relative to the shoe liner, and the linkage shaft is connected with the shoe liner;
when the elevator normally operates, the movable wedge blocks and the shoe liners keep a certain gap with the guide rail, so that the guiding function of the elevator car is realized;
when the elevator is braked suddenly, the movable wedge blocks protrude out of the surfaces of the shoe liners and clamp the guide rails, so that the braking function of the elevator car is realized.
Preferably, the shoe insert has a through hole in the middle, and the movable wedge is composed of a brake block and a connection plate, the brake block being movable in the through hole in a horizontal direction.
Preferably, the roller assembly is comprised of a stepped roller and a mounting plate; the middle part of the wedge block backboard is provided with a longitudinal middle groove, and the middle groove penetrates through the wedge block backboard; the width of the middle groove is larger than that of the connecting plate, so that the connecting plate can penetrate through the wedge backboard to be in contact with the roller on the stepped roller.
Preferably, the step-shaped roller has a retainer, a plurality of large rollers, and small rollers; the upper half part of the stepped roller is provided with a plurality of assemblies of large rollers and small rollers, the small rollers are nested in the large rollers and can be fixed on the holding piece in a rolling way; the lower half of the stepped roller is provided with a plurality of small rollers which are rollably fixed to the holder.
Preferably, the middle part of the opposite surface of the wedge backboard and the stepped roller is provided with a longitudinal through groove, the width of the through groove is larger than that of the large roller on the stepped roller, so that the large roller is accommodated in the through groove, and the wedge backboard is only contacted with the small roller when moving up and down.
Preferably, the elevator safety guide device further comprises a connecting rod assembly, the connecting rod assembly comprises two pairs of parallel connecting rods, the parallel connecting rods are rotatably connected with the fixed wedge block and the wedge block backboard, and the shoe liner is fixedly connected with the wedge block backboard.
Preferably, the elevator safety guide device further comprises a connecting rod assembly, wherein the connecting rod assembly comprises two pairs of parallel connecting rods, the parallel connecting rods are rotatably connected with the fixed wedge blocks and the shoe liners, and the movable wedge blocks are fixedly connected with the wedge block backboard.
Preferably, the fixing wedge is provided with a guide groove.
Compared with the prior art, the elevator braking system adopts a set of devices to cope with the normal running and braking conditions of the elevator. The manufacturing and mounting processes of the components can be reduced, the accuracy of the working surfaces of the brake wedge block and the guide shoe liner is improved, the centering condition of the guide and brake components is improved, the guide rail is prevented from rubbing or the braking function is prevented from misoperation, and the running stability and safety of the elevator are improved.
Drawings
The invention is described in further detail below with reference to the attached drawings and detailed description:
fig. 1 is a schematic view of the structure of an elevator safety guide of embodiment 1;
fig. 2 is a schematic view of the structure of the elevator safety guide of embodiment 1 after concealing the safety gear frame;
FIG. 3 is an exploded view of the movable wedge assembly of example 1;
FIG. 4 is a schematic view of the stepped roller structure of example 1;
fig. 5a is a schematic view showing the state of the elevator safety guide in the normal operation of the elevator of example 1;
fig. 5b is a schematic view showing the state of the elevator safety guide at the time of emergency braking of the elevator of embodiment 1;
fig. 6 is a schematic structural view of an elevator safety guide of embodiment 2;
fig. 7 is a schematic structural view of an elevator safety guide device of embodiment 3.
Detailed Description
Other advantages and technical effects of the present invention will become more fully apparent to those skilled in the art from the following disclosure, which is a detailed description of the present invention given by way of specific examples. The invention may be practiced or carried out in different embodiments, and details in this description may be applied from different points of view, without departing from the general inventive concept. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. The following exemplary embodiments of the present invention may be embodied in many different forms and should not be construed as limited to the specific embodiments set forth herein. It should be appreciated that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the technical solution of these exemplary embodiments to those skilled in the art.
Example 1
As shown in fig. 1, the present embodiment provides an elevator safety guide device including a safety gear frame 1, a gear body assembly 2, a bolt assembly 23, a linkage shaft 3, and a lifting lever 4. The clamp body assembly 2 is connected to the safety clamp frame 1 through a bolt assembly 23, and the linkage shaft 3 is fixedly connected with the lifting rod 4.
As shown in fig. 2, the caliper body assembly 2 includes a U-shaped spring 21, and a symmetrically disposed roller assembly 22, a movable wedge assembly, and a fixed wedge 27. The fixed wedge 27 is fixed on the U-shaped spring through the bolt assembly 23; the roller assembly 22 is arranged between the fixed wedge 27 and the movable wedge assembly, and the roller assembly 22 is composed of a stepped roller 22a and a mounting plate 22 b; the movable wedge 24, the shoe 25 and the wedge backboard 26 form a movable wedge assembly, and the shoe 25 is fixedly connected with the wedge backboard 26. The linkage shaft 3 is connected with the shoe bushing 25, and when the lifting rod 4 is lifted, the linkage shaft 3 is driven to rotate, and the movable wedge block component is lifted to clamp the guide rail, so that the effect of braking the car is achieved.
The movable wedge block 24 can horizontally move relative to the shoe liner 25, and when the elevator normally operates, the movable wedge block and the shoe liner keep a certain gap with the guide rail, so that the guiding function of the elevator car is realized; when the elevator is braked suddenly, the movable wedge blocks protrude out of the surfaces of the shoe liners and clamp the guide rails, so that the braking function of the elevator car is realized.
As shown in fig. 3, the more specific structure of the movable wedge assembly and the manner of engagement with the roller assembly 22 are as follows. The middle part of the shoe liner 25 is provided with a through hole, the movable wedge block 24 consists of a brake block 241 and a connecting plate 242, and the brake block 241 can move in the through hole along the horizontal direction; the brake block may be one block or may be multiple blocks, and in this embodiment, two blocks are used; the middle part of the wedge backplate 26 is provided with a longitudinal middle groove 261, the middle groove 261 penetrates through the wedge backplate 26, the width of the middle groove 261 is larger than that of the connecting plate 242, and the connecting plate 242 can penetrate through the wedge backplate 26 to be in contact with the roller on the stepped roller 22 a; the wedge back plate 26 has a longitudinal through groove 262 in the middle of the opposite surface to the stepped roller 22a, the width of the through groove 262 is larger than the width of the large roller on the stepped roller 22a, so that the large roller is accommodated in the through groove 262, and the wedge back plate 26 contacts with the small roller only when moving up and down.
The stepped roller 22a has a specific structure as shown in fig. 4, and the stepped roller 22a has a holder 22a1, a plurality of large rollers 22a3, and small rollers 22a2. The upper half part of the stepped roller 22a is provided with a plurality of assemblies of a large roller 22a3 and a small roller 22a2, the small roller 22a2 is nested in the large roller 22a3 and can be fixed on the retaining piece 22a1 in a rolling way; the lower half of the stepped roller 22a is provided with a plurality of small rollers 22a2, and the small rollers 22a2 are rollably fixed to the holder 22a 1.
As shown in fig. 5a and 5b, when the elevator is in normal operation, the movable wedge assembly sags under the action of gravity, the wedge backboard 26 is contacted with the small rollers 22a2 at the lower half part of the stepped roller 22a, and the contact surface and the guide rail form a preset acute angle; the shoe 25 and the brake pad 241 do not contact the guide rail, and a certain gap is maintained between them, thereby realizing the car guiding function. When the elevator is braked suddenly, the lifting rod 4 lifts up, and the shoe liner 25 is driven to move upwards through the linkage shaft 3; at this time, the wedge back plate 26 is contacted with the plurality of small rollers 22a2 at the upper half part of the stepped roller 22a, meanwhile, the connecting plate 242 is contacted with the large rollers 22a3, the brake block 241 is pushed to move outwards to protrude out of the surface of the shoe insert 25, and finally, the brake block 241 clamps the guide rail, so that a braking function is realized.
Example 2
As shown in fig. 6, the elevator safety guide device further includes a link assembly 29 on the basis of embodiment 1, and the link assembly 29 includes two pairs of parallel links 29a,29b rotatably connecting the fixed wedge 27 and the wedge back plate 26.
During emergency braking, as the shoe 25 moves upwards, the parallel connecting rod 2 ensures that the movable wedge 24 moves upwards vertically, the horizontal projection distance between the movable wedge 24 and the fixed wedge 27 is prolonged, the gap between the movable wedge 24 and the guide rail is reduced, the horizontal displacement and the upward displacement of the shoe 25 are kept in a constant proportion, and the movable wedge 24 protrudes out of the working surface of the shoe 25 to gradually rub against the guide rail, so that braking is realized.
Further, a connecting rod shaft pin and a guide groove can be arranged between the fixed wedge block 27 and the movable wedge block assembly, so that the horizontal displacement and upward displacement proportion is gradually increased, the horizontal displacement and upward displacement proportion of the shoe liner 25 are kept unchanged, the gap between the movable wedge block 24 and the guide rail is reduced along with the upward movement of the shoe liner 25 driven by the lifting assembly, and the working surface of the protruding shoe liner 25 gradually rubs with the guide rail, so that braking is realized.
Example 3
As shown in fig. 7, the elevator safety guide device further includes a link assembly 29 on the basis of embodiment 1, and the link assembly 29 includes two pairs of parallel links 29a,29b rotatably connecting the fixing wedge 27 and the shoe 25. Further, unlike embodiment 1, in embodiment 1, shoe 25 is fixedly connected to wedge back plate 26, while movable wedge 24 is fixedly connected to wedge back plate 26.
Embodiments 1 and 2 provide for the shoe insert 25 to be moved away from the rail work surface during lifting as compared to the movable wedge 24 by bringing the movable wedge 24 closer to the rail work surface than the shoe insert 25 during lifting. It is only necessary to correspondingly shift the driving variation of the roller assembly 22 to the guide surface of the shoe 25 or to shift the link assembly 29, the link pin and the guide groove structure to the side of the shoe 25. Under the braking condition, the stress of the movable wedge block 24 is far greater than that of the shoe liner 25 in normal, the design strength requirement of a driving structure on the shoe liner 25 is low, and the structure is correspondingly simple.
The present invention has been described in detail by way of specific embodiments and examples, but these should not be construed as limiting the invention. Many variations and modifications may be made by one skilled in the art without departing from the principles of the invention, which is also considered to be within the scope of the invention.
Claims (8)
1. An elevator safety guide device, comprising: the safety tongs comprise a safety tongs frame, a tongs body assembly, a bolt assembly, a linkage shaft and a lifting pull rod;
the clamp body assembly comprises a U-shaped spring, and a roller assembly, a movable wedge block assembly and a fixed wedge block which are symmetrically arranged; the fixed wedge block is fixed on the U-shaped spring through a bolt assembly; the roller assembly is arranged between the fixed wedge block and the movable wedge block assembly;
the movable wedge block assembly consists of a movable wedge block, a shoe liner and a wedge block backboard, wherein the movable wedge block can horizontally move relative to the shoe liner, and the linkage shaft is connected with the shoe liner;
when the elevator normally operates, the movable wedge blocks and the shoe liners keep a certain gap with the guide rail, so that the guiding function of the elevator car is realized;
when the elevator is braked suddenly, the movable wedge blocks protrude out of the surfaces of the shoe liners and clamp the guide rails, so that the braking function of the elevator car is realized.
2. The elevator safety guide according to claim 1, wherein the shoe insert has a through hole in a middle portion thereof, and the movable wedge is composed of a brake block and a connection plate, the brake block being movable in a horizontal direction in the through hole.
3. The elevator safety guide of claim 2 wherein the roller assembly is comprised of a stepped roller and a mounting plate;
the middle part of the wedge block backboard is provided with a longitudinal middle groove, and the middle groove penetrates through the wedge block backboard; the width of the middle groove is larger than that of the connecting plate, so that the connecting plate can penetrate through the wedge backboard to be in contact with the roller on the stepped roller.
4. The elevator safety guide of claim 3 wherein the stepped roller has a retainer, a plurality of large rollers, and small rollers;
the upper half part of the stepped roller is provided with a plurality of assemblies of large rollers and small rollers, the small rollers are nested in the large rollers and can be fixed on the holding piece in a rolling way;
the lower half of the stepped roller is provided with a plurality of small rollers which are rollably fixed to the holder.
5. The elevator safety guide according to claim 4, wherein a center portion of the opposite surface of the wedge shoe plate to the stepped roller has a longitudinal through groove, and a width of the through groove is larger than a width of the large roller on the stepped roller so that the large roller is accommodated in the through groove, and the wedge shoe plate is in contact with only the small roller when moving up and down.
6. The elevator safety guide of claim 1 further comprising a linkage assembly including two pairs of parallel links rotatably connecting the fixed wedge and the wedge backplate, the shoe fixedly connected to the wedge backplate.
7. The elevator safety guide of claim 1 further comprising a linkage assembly including two pairs of parallel links rotatably connecting the fixed wedge and the shoe, the movable wedge being fixedly connected to the wedge backplate.
8. The elevator safety guide of claim 1 wherein the fixed wedge has a guide slot therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310715348.8A CN116767995A (en) | 2023-06-16 | 2023-06-16 | Elevator safety guide device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310715348.8A CN116767995A (en) | 2023-06-16 | 2023-06-16 | Elevator safety guide device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116767995A true CN116767995A (en) | 2023-09-19 |
Family
ID=88009272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310715348.8A Pending CN116767995A (en) | 2023-06-16 | 2023-06-16 | Elevator safety guide device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116767995A (en) |
-
2023
- 2023-06-16 CN CN202310715348.8A patent/CN116767995A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2008143707A (en) | Elevator installation, guide rail of elevator installation, brake equipment of elevator installation and method for guiding, holding and braking elevator installation | |
| CN111483901B (en) | Elevator safety device | |
| TW200815273A (en) | Lift installation with braking equipment and method of braking in a lift installation | |
| CN213085114U (en) | Elevator safety tongs | |
| US7374021B2 (en) | Combined elevator guiding and safety braking device | |
| JP4400956B2 (en) | Elevator safety device | |
| KR100335821B1 (en) | Sliding safety gear | |
| EP3328772B1 (en) | Safety block for elevator | |
| CN116767995A (en) | Elevator safety guide device | |
| KR100506789B1 (en) | Safety device for an elevator | |
| JP2017048011A (en) | Emergency stop device for elevator | |
| CN111392542B (en) | Bidirectional safety tongs | |
| KR100643526B1 (en) | Sliding gib structure of cam type safety gear for elevator | |
| KR20160080885A (en) | Safety device for an elevator | |
| KR100643909B1 (en) | Emergency breaking device for elevator | |
| EP1549582A1 (en) | Combined elevator guiding and safety braking device | |
| JP2010126284A (en) | Damping device of elevator | |
| KR100615623B1 (en) | A rope brake device for elevator | |
| US3768597A (en) | Elevator flexible guide clamp safety | |
| JP6868681B1 (en) | Elevator emergency stop device | |
| CN114746353B (en) | Elevator and emergency stop device thereof | |
| JP2000302352A (en) | Emergency stop device of elevator | |
| JP2011001150A (en) | Braking device for elevator | |
| CN217458354U (en) | One-way safety tongs | |
| US12077415B2 (en) | Apparatus for guiding and braking a travelling body of an elevator system, which body is to be moved along a guide track |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |