CN2598968Y - Step-by-step safety tongs - Google Patents
Step-by-step safety tongs Download PDFInfo
- Publication number
- CN2598968Y CN2598968Y CNU03204187XU CN03204187U CN2598968Y CN 2598968 Y CN2598968 Y CN 2598968Y CN U03204187X U CNU03204187X U CN U03204187XU CN 03204187 U CN03204187 U CN 03204187U CN 2598968 Y CN2598968 Y CN 2598968Y
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- CN
- China
- Prior art keywords
- safety tongs
- cover plate
- elastic element
- plate
- spring
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- 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
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The utility model relates to step-by-step safety tongs for prevent the falling of the elevator, which comprise a tong body having a brake groove, and a left cover plate and a right cover plate fixed on the tong body; an elastic element, a movable wedge block, a fixed wedge block and a slide block are respectively arranged in the brake groove under the left cover plate and the right cover plate, wherein the inclined surface of the fixed wedge block faces the movable wedge block, and the elastic element consists of a plate spring unit formed by a plurality of plate springs. As the elastic element consists of a plurality of parallel arranged plate springs and the plate spring is made easily, the safety tongs has accurate thickness to ensure consistent mechanical property. Additionally, as the plate spring has linear mechanical characteristic, during each action, the parameter of the safety tongs is stable without drifting and has good repeating performance so that the step-by-step safety tongs have high stability. As the parameter is stable, the assembled safety tongs are easy in debugging and convenient in use. Meanwhile, compared with the prior butterfly spring and the U-shaped spring, the plate spring has low manufacture cost and small volume.
Description
Technical field
The utility model relates to a kind of brake equipment, specifically relates to a kind of progressive safety gear that is used for elevator brake.
Technical background
When falling when elevator appearance accident; in order to reduce the infringement that lift car is subjected to as far as possible, protection people's safety of life and property is provided with safety guard on lift car; this safety guard comprises shift mechanism and safety tongs, and its core component is a safety tongs.Be divided into instantaneous formula and gradual two kinds according to safety tongs stop mode.Press the safety tongs use, instantaneous safety is used for Cargo Lift, and progressive safety gear is used for elevator.Progressive safety gear at present commonly used is unidirectional stop safety tongs, and its structure comprises caliper with breaker slot, is anchored on the left and right cover plate above the caliper, and elastic element and movable voussoir are installed in the breaker slot below left cover; Fixedly voussoir and slide block are housed in the breaker slot below right cover plate, and fixedly the inclined-plane of voussoir is towards movable voussoir, brake component wherein is generally belleville spring, U-shaped spring or π shape spring.And belleville spring is a plate stamping spare, and there are error in spring thickness, shape, and its rigidity is directly proportional with 4 powers of spring thickness, so the mechanical property conformability is poor between the monolithic belleville spring; Belleville spring group and axle quality of fit require height simultaneously, and the repeatedly spermiation degree of every belleville spring is difficult to control again, so the parameter instability, and poor repeatability after the each action of safety tongs, is difficult to guarantee that its parameter does not change poor stability; And the belleville spring group also has nonlinear characteristic, causes safety tongs assembling post debugging difficulty big in conjunction with other factors, uses inconvenient.The volume of U-shaped spring is big in addition, makes the manufacturing cost height of safety tongs.
The utility model content
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of easy to use, stable performance, progressive safety gear that cost is low are provided.
Progressive safety gear of the present utility model, comprise caliper, be anchored on the left cover above the caliper, right cover plate with breaker slot, elastic element and movable voussoir are installed in the breaker slot below left cover, fixedly voussoir and slide block are housed in the breaker slot below right cover plate, and fixedly the inclined-plane of voussoir is towards movable voussoir, the leaf spring group that wherein said elastic element is made up of some leaf springs.
Contacted of wherein said movable voussoir and elastic element are cambered surface.
Wherein said leaf spring group is formed for two leaf springs that are emitted on side by side together.
The advantage and the good effect of progressive safety gear of the present utility model are: owing to its elastic element is made up of the some leaf springs that are emitted on side by side together, and leaf spring is processed easily, guarantees that easily its thickness is accurate, thereby has guaranteed the unanimity of mechanical property; Leaf spring has linear mechanical characteristics in addition, and in use, after the each action of safety tongs, its parameter stability does not drift about, and it is good to repeat performance, so progressive safety gear of the present utility model has very high stability; And because parameter stability, so the debugging easily of safety tongs assembling back is easy to use; Simultaneously, leaf spring is compared with existing belleville spring, U-shaped spring, and volume is little, so low cost of manufacture.
Below in conjunction with accompanying drawing progressive safety gear of the present utility model is described further.
Description of drawings
Fig. 1 is a progressive safety gear front view of the present utility model;
Fig. 2 is the front view of progressive safety gear of the present utility model after removing left and right cover plate;
The specific embodiment
Referring to Fig. 1 and Fig. 2.Progressive safety gear of the present utility model, comprise caliper 1 with breaker slot, caliper 1 forms through precision cast, on caliper 1, be fixed with left cover 10 and right cover plate 8 by bolt 9, two leaf springs 2 and the movable voussoir 3 that are emitted on side by side together are installed below the left cover 10 in the caliper breaker slot from left to right successively, fixing voussoir 6 and can be along the fixing slide block 5 of the inclined-plane slip of voussoir 6 is housed below the right cover plate 8 in the caliper breaker slot from right to left successively, and fixedly the inclined-plane of voussoir 6 towards movable voussoir 3.Wherein leaf spring 2 also can be one, three or four etc., it vertically is fixed on the caliper 1 by elastic clamp ring 4, movable voussoir 3 can be in the caliper breaker slot sway, and by on the breaker slot, following cell wall guiding, the position, horizontal axis of movable voussoir 3 is provided with straight pin 11, the jag of straight pin 11 stretches out the horizontal slotted hole 13 of left cover 10, the length of this horizontal slotted hole 13 is less than 6mm, behind progressive safety gear assembly and adjustment of the present utility model, straight pin 11 is positioned at the right-hand member of horizontal slotted hole 13, and movable voussoir 3 is a cambered surface with 2 contacted of leaf springs; Fixedly voussoir 6 is by being bolted in the 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 fixedly inclined-plane of voussoir 6, and any point is equal to the distance on the fixing inclined-plane of voussoir on this line, and the jag of straight pin 12 stretches out the long guiding hole 14 on the right cover plate 8.The guide rail 15 that moves up and down for lift car between movable voussoir 3 and slide block 5 has the gap between guide rail 15 and movable voussoir 3 and the slide block 5.Adjustable bolt 7 is housed and is equipped with jack panel in the caliper upper end, adjustable bolt 7 can be controlled the distance that slide block 5 moves.
The working process of progressive safety gear of the present utility model is: progressive safety gear is installed in the two ends of lift car cross sill, links to each other with the safety tongs shift mechanism by fork, and the safety tongs shift mechanism is connected with velocity limiter.During when the descending hypervelocity of lift car or because of unexpected falling, elevator overspeed preventer device at first moves, make the shift mechanism action of safety tongs again, shift mechanism drives the slide block of safety tongs along fixedly moving on voussoir 6 inclined-planes, making fixedly, the wedge shape space between the voussoir 6 and guide rail 15 reduces, until the right guide pass of slide block 5 contacts, produce friction force, at this moment caliper 1 moves to right, movable voussoir 3 is contacted with the left rail face and produce friction force, like this, progressive safety gear of the present utility model clamps guide rail 15, plays the lift car stop effect that makes.In whole stop process, because movable voussoir 3 and leaf spring 2 be for cambered surface contacts, so operation curve is more level and smooth, impulsive force is little, feels comfortable; In addition, progressive safety gear of the present utility model uses the leaf spring group to be elastic element, its parameter stability, and it is good to repeat performance, not only makes the easily debugging of safety tongs assembling back, easy to use; And making safety tongs after each action, parameter changes very little, helps prolonging its service life.
Claims (3)
1. progressive safety gear, comprise caliper (1), be anchored on the left cover (10) above the caliper, right cover plate (8) with breaker slot, elastic element and movable voussoir (3) are installed in the breaker slot below left cover (10), fixedly voussoir (6) and slide block (5) are housed in the breaker slot below right cover plate (8), and fixedly the inclined-plane of voussoir (6) is characterized in that the leaf spring group that described elastic element is made up of some leaf springs (2) towards movable voussoir (3).
2. progressive safety gear according to claim 1 is characterized in that contacted of described movable voussoir (3) and elastic element are cambered surface.
3. progressive safety gear according to claim 1 and 2 is characterized in that described leaf spring group is for being emitted on two leaf springs (2) composition together side by side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU03204187XU CN2598968Y (en) | 2003-02-20 | 2003-02-20 | Step-by-step safety tongs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU03204187XU CN2598968Y (en) | 2003-02-20 | 2003-02-20 | Step-by-step safety tongs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2598968Y true CN2598968Y (en) | 2004-01-14 |
Family
ID=34158439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU03204187XU Expired - Fee Related CN2598968Y (en) | 2003-02-20 | 2003-02-20 | Step-by-step safety tongs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2598968Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401837A (en) * | 2014-12-08 | 2015-03-11 | 苏州莱茵电梯制造有限公司 | Safety tongs for curve operation elevator |
| CN105329739A (en) * | 2015-12-01 | 2016-02-17 | 佛山市欧汇电梯配件有限公司 | Progressive safety tongs |
| CN107176523A (en) * | 2017-07-20 | 2017-09-19 | 广州日滨科技发展有限公司 | Elevator safety gear device to test platform and method of testing |
| CN111724500A (en) * | 2020-06-17 | 2020-09-29 | 南通中力科技有限公司 | Progressive real-time recording system for safety gear debugging data |
-
2003
- 2003-02-20 CN CNU03204187XU patent/CN2598968Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104401837A (en) * | 2014-12-08 | 2015-03-11 | 苏州莱茵电梯制造有限公司 | Safety tongs for curve operation elevator |
| CN105329739A (en) * | 2015-12-01 | 2016-02-17 | 佛山市欧汇电梯配件有限公司 | Progressive safety tongs |
| CN107176523A (en) * | 2017-07-20 | 2017-09-19 | 广州日滨科技发展有限公司 | Elevator safety gear device to test platform and method of testing |
| CN111724500A (en) * | 2020-06-17 | 2020-09-29 | 南通中力科技有限公司 | Progressive real-time recording system for safety gear debugging data |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |