CN105329739A - Progressive safety tongs - Google Patents
Progressive safety tongs Download PDFInfo
- Publication number
- CN105329739A CN105329739A CN201510873250.0A CN201510873250A CN105329739A CN 105329739 A CN105329739 A CN 105329739A CN 201510873250 A CN201510873250 A CN 201510873250A CN 105329739 A CN105329739 A CN 105329739A
- Authority
- CN
- China
- Prior art keywords
- cover plate
- safety tongs
- tongs
- movable wedge
- progressive
- 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
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
- B66B5/22—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of linearly-movable wedges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention relates to a safety brake device for an elevator, and particularly relates to progressive safety tongs. The progressive safety tongs comprise a tongs body with brake grooves, as well as a left cover plate and a right cover plate which are fastened on the tongs body, wherein an elastic component and a movable wedge block are installed in the brake groove below the left cover plate, a fixed wedge block and a slide block are installed in the brake groove below the right cover plate, and the inclined surface of the fixed wedge block faces the movable wedge block, wherein the elastic component is a plate spring group composed of a plurality of plate springs. The progressive safety tongs disclosed by the invention have stable and drift-free parameters, and high repeatability, and therefore have quite high stability; moreover, due to the stable parameters, the safety tongs are easy to debug after being assembled, and therefore are convenient to use; and meanwhile, compared with the existing belleville springs and U-shaped springs, the plate springs are small in size, and therefore are low in manufacturing cost.
Description
Technical field
The present invention relates to a kind of elevator safety brake device, especially a kind of progressive safety gear.
Background technology
When elevator occurs surprisingly and falls; in order to reduce the infringement that lift car is subject to as far as possible, the safety of life and property of protection people, is provided with safety guard on the elevator car; this safety guard comprises shift mechanism and safety tongs, and its core component is safety tongs.Instantaneous formula and gradual two kinds are divided into according to safety tongs stop mode.By safety tongs use, instantaneous safety is used for Cargo Lift, and progressive safety gear is used for elevator.At present conventional progressive safety gear is unidirectional stop safety tongs, its structure comprise there is breaker slot caliper, be anchored on left and right cover plate above caliper, elastic element and movable wedge are installed in the breaker slot below left cover; Breaker slot below right cover plate is built with fixing voussoir and slide block, and the inclined-plane of fixing voussoir is towards movable wedge, and brake component is wherein generally belleville spring, U-shaped spring or π shape spring.And belleville spring is plate stamping part, there is error in spring thickness, shape, and its rigidity is directly proportional to 4 powers of spring thickness, and therefore between monolithic belleville spring, mechanical property conformability is poor; Belleville spring group and axle quality of fit require high simultaneously, and the repeatedly spermiation degree of every sheet belleville spring is difficult to again control, and therefore parameter is unstable, and poor repeatability, after each action of safety tongs, is difficult to ensure that its parameter does not change, poor stability; And belleville spring group also has nonlinear characteristic, cause safety tongs to assemble post debugging difficulty greatly in conjunction with other factors, use inconvenience.The volume of U-shaped spring is large in addition, makes the manufacturing cost of safety tongs high.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of easy to use, stable performance, progressive safety gear that cost is low.Progressive safety gear of the present invention, comprise there is breaker slot caliper, be anchored on left cover, right cover plate above caliper, below left cover, elastic element and movable wedge are installed in breaker slot, breaker slot below right cover plate is built with fixing voussoir and slide block, and the inclined-plane of fixing voussoir is towards movable wedge, the leaf spring group that wherein said elastic element is made up of some leaf springs.
Preferably, the face that described movable wedge contacts with elastic element is cambered surface.
Preferably, described leaf spring group is the two leaf spring compositions be emitted on side by side together.
The advantage of progressive safety gear of the present invention is with good effect: due to its elastic element to be emitted on side by side by some together with leaf spring form, and leaf spring is easily processed, and easily ensures that its thickness is accurate, thus ensure that the consistent of mechanical property; Leaf spring has linear mechanical characteristics in addition, and in use, after each action of safety tongs, its parameter stability does not drift about, and Repeatability is good, therefore progressive safety gear of the present invention has very high stability; And due to parameter stability, easily debugging after safety tongs assembling, so easy to use; Meanwhile, leaf spring is compared with existing belleville spring, U-shaped spring, and volume is little, therefore low cost of manufacture.
Accompanying drawing explanation
Fig. 1 is progressive safety gear front view of the present invention;
Fig. 2 is the front view of progressive safety gear of the present invention after removing left and right cover plate;
Detailed description of the invention
As Figure 1-Figure 2, progressive safety gear of the present invention, comprise the caliper 1 with breaker slot, caliper 1 forms through precision cast, left cover 10 and right cover plate 8 is fixed with by bolt 9 on caliper 1, in caliper breaker slot, two leaf springs 2 be emitted on side by side together and movable wedge 3 are installed below left cover 10 from left to right successively, the slide block 5 fixing voussoir 6 being housed successively from right to left below right cover plate 8 in caliper breaker slot and can sliding along the inclined-plane of fixing voussoir 6, and the inclined-plane of fixing voussoir 6 is towards movable wedge 3.Wherein leaf spring 2 also can be one, three or four etc., it is vertically fixed on caliper 1 by elastic clamp ring 4, movable wedge 3 can in caliper breaker slot sway, and led by the upper and lower cell wall of breaker slot, the position, horizontal axis of movable wedge 3 is provided with straight pin 11, the jag of straight pin 11 stretches out the horizontal elongated hole 13 of left cover 10, the length of this horizontal elongated hole 13 is less than 6mm, when after progressive safety gear assembly and adjustment of the present invention, straight pin 11 is positioned at the right-hand member of horizontal elongated hole 13, and the face that movable wedge 3 contacts with leaf spring 2 is cambered surface; Fixing voussoir 6 is bolted in caliper breaker slot, slide block 5 is provided with two straight pins 12, the line of these two straight pins 12 is parallel to the inclined-plane of fixing voussoir 6, and any point is equal to the distance on the inclined-plane of fixing voussoir on this line, the jag of straight pin 12 stretches out the long guiding hole 14 on right cover plate 8.Be the guide rail 15 that lift car moves up and down between movable wedge 3 and slide block 5, guide rail 15 and between movable wedge 3 and slide block 5, there is gap.Adjustment bolt 7 and standby jack panel are housed in caliper upper end, and adjustment bolt 7 can control the distance of slide block 5 movement.The working process of progressive safety gear of the present invention is: progressive safety gear is arranged on the two ends of lift car cross sill, is connected with safety tongs shift mechanism by fork, and safety tongs shift mechanism is connected with velocity limiter.When lift car overspeed descending or when falling because of accident, elevator overspeed preventer device is action first, make the shift mechanism action of safety tongs again, shift mechanism drives the slide block of safety tongs to move along on fixing voussoir 6 inclined-plane, wedge shape space between fixing voussoir 6 and guide rail 15 is reduced, until slide block 5 contacts right guide pass, produce friction force, at this moment caliper 1 moves to right, movable wedge 3 is made to contact with left rail face and produce friction force, like this, progressive safety gear clamping guide-rail 15 of the present invention, plays and makes the effect of lift car stop.In whole stop process, due to movable wedge 3 with leaf spring 2 for cambered surface contacts, so operation curve is comparatively level and smooth, impulsive force is little, feels comfortable; In addition, progressive safety gear of the present invention uses leaf spring group to be elastic element, its parameter stability, and Repeatability is good, and after not only making safety tongs assemble, easily debugging, easy to use; And making safety tongs after each action, Parameters variation is very little, is conducive to extending its service life.
The foregoing is only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification sheets of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (3)
1. progressive safety gear, it is characterized in that: comprise there is breaker slot caliper, be anchored on left cover, right cover plate above caliper, below left cover, elastic element and movable wedge are installed in breaker slot, breaker slot below right cover plate is built with fixing voussoir and slide block, and the inclined-plane of fixing voussoir is towards movable wedge, the leaf spring group that wherein said elastic element is made up of some leaf springs.
2. progressive safety gear as claimed in claim 1, is characterized in that: the face that described movable wedge contacts with elastic element is cambered surface.
3. progressive safety gear as claimed in claim 2, is characterized in that: described leaf spring group is the two leaf spring compositions be emitted on side by side together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510873250.0A CN105329739A (en) | 2015-12-01 | 2015-12-01 | Progressive safety tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510873250.0A CN105329739A (en) | 2015-12-01 | 2015-12-01 | Progressive safety tongs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105329739A true CN105329739A (en) | 2016-02-17 |
Family
ID=55280557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510873250.0A Pending CN105329739A (en) | 2015-12-01 | 2015-12-01 | Progressive safety tongs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105329739A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105905741A (en) * | 2016-06-28 | 2016-08-31 | 爱默生电梯有限公司 | Elevator safety gear |
| CN105923498A (en) * | 2016-06-30 | 2016-09-07 | 爱默生电梯有限公司 | Progressive type safety tongs of elevator |
| KR20190072042A (en) * | 2017-12-15 | 2019-06-25 | 덕 규 김 | Unidirectional emergency braking apparatus for elevators |
| US11235949B2 (en) | 2017-07-21 | 2022-02-01 | Otis Elevator Company | Safety device, elevator safety system and elevator system |
| CN114955782A (en) * | 2021-02-26 | 2022-08-30 | 杭州沪宁电梯部件股份有限公司 | Brake assembly for safety protection device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1148742A (en) * | 1965-06-01 | 1969-04-16 | Ceccato & Co | A device for locking platform hoists for motor vehicles |
| CN2288164Y (en) * | 1997-03-07 | 1998-08-19 | 无锡市南方电梯技术有限公司 | Gradually advancing safety pliers |
| CN1319551A (en) * | 2000-04-14 | 2001-10-31 | 中国建筑科学研究院建筑机械化研究分院 | Bidirectional safety tongs for elevator |
| CN2598968Y (en) * | 2003-02-20 | 2004-01-14 | 刘文久 | Step-by-step safety tongs |
| CN2652899Y (en) * | 2003-07-22 | 2004-11-03 | 宁波欣达电梯配件厂 | Single float two-way safety clamp |
| CN2704573Y (en) * | 2003-09-11 | 2005-06-15 | 刘文久 | Progressive two-way safety tongs |
| CN201494982U (en) * | 2009-05-18 | 2010-06-02 | 杭州沪宁电梯配件有限公司 | Novel safety tongs |
-
2015
- 2015-12-01 CN CN201510873250.0A patent/CN105329739A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1148742A (en) * | 1965-06-01 | 1969-04-16 | Ceccato & Co | A device for locking platform hoists for motor vehicles |
| CN2288164Y (en) * | 1997-03-07 | 1998-08-19 | 无锡市南方电梯技术有限公司 | Gradually advancing safety pliers |
| CN1319551A (en) * | 2000-04-14 | 2001-10-31 | 中国建筑科学研究院建筑机械化研究分院 | Bidirectional safety tongs for elevator |
| CN2598968Y (en) * | 2003-02-20 | 2004-01-14 | 刘文久 | Step-by-step safety tongs |
| CN2652899Y (en) * | 2003-07-22 | 2004-11-03 | 宁波欣达电梯配件厂 | Single float two-way safety clamp |
| CN2704573Y (en) * | 2003-09-11 | 2005-06-15 | 刘文久 | Progressive two-way safety tongs |
| CN201494982U (en) * | 2009-05-18 | 2010-06-02 | 杭州沪宁电梯配件有限公司 | Novel safety tongs |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105905741A (en) * | 2016-06-28 | 2016-08-31 | 爱默生电梯有限公司 | Elevator safety gear |
| CN105905741B (en) * | 2016-06-28 | 2017-12-19 | 爱默生电梯有限公司 | A kind of elevator safety gear |
| CN105923498A (en) * | 2016-06-30 | 2016-09-07 | 爱默生电梯有限公司 | Progressive type safety tongs of elevator |
| US11235949B2 (en) | 2017-07-21 | 2022-02-01 | Otis Elevator Company | Safety device, elevator safety system and elevator system |
| KR20190072042A (en) * | 2017-12-15 | 2019-06-25 | 덕 규 김 | Unidirectional emergency braking apparatus for elevators |
| KR102009999B1 (en) * | 2017-12-15 | 2019-10-21 | 김덕규 | Unidirectional emergency braking apparatus for elevators |
| CN114955782A (en) * | 2021-02-26 | 2022-08-30 | 杭州沪宁电梯部件股份有限公司 | Brake assembly for safety protection device |
| CN114955782B (en) * | 2021-02-26 | 2024-05-07 | 杭州沪宁电梯部件股份有限公司 | Braking assembly for safety protection device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160217 |
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| RJ01 | Rejection of invention patent application after publication |