CN200985260Y - Safety clamp acting on traction wheel - Google Patents
Safety clamp acting on traction wheel Download PDFInfo
- Publication number
- CN200985260Y CN200985260Y CN 200620043368 CN200620043368U CN200985260Y CN 200985260 Y CN200985260 Y CN 200985260Y CN 200620043368 CN200620043368 CN 200620043368 CN 200620043368 U CN200620043368 U CN 200620043368U CN 200985260 Y CN200985260 Y CN 200985260Y
- Authority
- CN
- China
- Prior art keywords
- pedestal
- plate
- dragging plate
- safety tongs
- dragging
- 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 - Lifetime
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Abstract
The utility model discloses a catch block used on traction sheaves. A base is provided with a dragging board (23) which is in a rolling or sliding match with the base along vertical direction, the dragging board (23) is provided with a brake shoe plate component (10) which is articulated by a pin shaft (20), one end of the dragging board (23) is, through a pull rod (9), connected with one end of a guy cable (3) which is positioned on one end of the base, the other end of the guy cable (3) is connected with an ascending overspeed governor, at least one offsetting spring (26) is positioned between the dragging board (23) and one end of the base, the dragging board (23) is provided with a limit device for limiting the swinging range of the brake shoe plate component (10) around the pin shaft (20), and the dragging board (23) also comprises a limit switch (8) which may output a signal suggesting the catch block has already moved as well as a textile board which may make the limit switch communicated. The catch block acting on the traction sheave not only maintains the advantages of the brake of prior art while acting on traction sheave but also has the advantages of small volume, simple structure, free noise in work, and stable and reliable work.
Description
Technical field
The utility model relates to the safety guard that a kind of towed elevator is controlled up hypervelocity, specifically is a kind of safety tongs that acts on the traction sheave.
Background technology
Elevator because out of control can the generation exceeded the speed limit, can produce injury to passenger or cargo-carring object like this when operation.For preventing elevator overspeed, elevator need be provided with overspeed protection device, and originally old elevator standard has been only required descending overspeed protection device, and new edition GB7588-2003 " elevator manufacturing and installation safety standard " requires elevator that protection device for over-speed ascending must be set simultaneously.
Known protection device for over-speed ascending generally has following four kinds:
1, acts on bidirectional safety tongs on the car.For not only controlling descending hypervelocity but also control up hypervelocity, adopt bidirectional safety tongs, generally be loaded on car top or bottom.Lift steel rope by velocity limiter during work, wire rope pulling brake clamp piece, brake clamp piece contact self-locking and clamp stop with guide pass.When need discharging, former when having only descending unidirectional safety tongs, as long as manual elevator inverted running, the brake clamp piece is just thrown off voluntarily by friction.But owing to adopt the uplink and downlink bidirectional safety tongs, there is the possibility of action simultaneously in uplink and downlink brake clamp piece, in case action just makes the brake clamp piece discharge simultaneously, if the car stop is in the middle of elevator hoistways at this moment, personnel can't be near safety tongs, discharge artificially safety tongs just become impossible.Because of this time scheme there be limited evidence currently of is adopted by producer.
2, act on safety tongs on the counterweight.This scheme is technical simpler, only needing to set up a cover descending on counterweight is that relative car is up safety tongs, but needs to increase a cover velocity limiter, higher to the requirements for quality of guide rail simultaneously, as move guide rail and be required to be solid guide rail, can increase the elevator manufacturing cost significantly like this.
3, act on wire holder on the steel rope that connects car and counterweight.This scheme is used comparatively extensive at present, its principle of work is to come stop elevator by clamping the elevator traction steel rope, wire holder acts on the traction steel-cable, because braking inertia is bigger, very big gripping power need be arranged, therefore in the stop process, be easy to damage steel rope, and structure is complicated, heavy, simultaneously owing to install behind the wire holder machine room of elevator additional and arrange and need to do bigger change.
4, act on drg on the traction sheave of towing machine.As the online disclosed a kind of towing machine brake equipment of Chinese patent, it comprises brake wheel and the brake control lever of braking the brake wheel inside circumference and the brake shoe brake cheek etc. that rotate with traction sheave.As also have a kind of known drg, form by embracing parts such as brake block in the traction sheave both sides, electromagnet, compression spring.With above-mentionedly act on the car, on the counterweight and the up safety guard on the steel rope compare, they have, and the action back discharges easily, the elevator manufacturing cost is low relatively, need not do advantage such as bigger improvement to former elevator design.But they still have the following disadvantages: both volumes are all bigger, and structure is complicated, and the former rotates with traction sheave all the time owing to brake wheel, and brake control lever and brake shoe brake cheek are positioned at brake wheel, no matter whether work, all have noise inevitably, and working stability and reliability are owed ideal.And the latter acts directly on the traction sheave because of drg, need the inertia of braking bigger, and braking force is provided by compression spring, therefore spring need provide very big application force, while traction sheave drg in the running also will be opened, the unlatching of drg is by electromagnet, and towing machine needs in the course of the work that drg is opened continually, closure.Therefore, its functional reliability is a very important problem equally, also because the frequent braking of drg, brake shoe also can produce wearing and tearing, need constantly check, adjust, and may wear to a certain degree also needs to change, in addition, no matter whether drg work can produce bigger noise equally.
The utility model content
The technical problems to be solved in the utility model is, overcome the defective of above prior art, provide a kind of advantage that acts on the drg on the traction sheave that had both kept prior art, again little, simple in structure, noiselessness and the more reliable and more stable safety tongs that acts on the traction sheave of work when not working of volume.
Technical solution of the present utility model is, a kind of safety tongs on the traction sheave of acting on following structure is provided, and comprises pedestal, has on the pedestal it is installed in device on the towing machine support of traction sheave below; Having on the pedestal longitudinally rolls cooperates or is slidingly fitted in dragging plate on the pedestal, have on the dragging plate through bearing pin pivotally attached brake block assembly, one end of dragging plate is connected with a end of drag-line on being installed in pedestal one end through pull bar, the other end of drag-line is connected with the up velocity limiter of towing machine, and dragging plate and said base one end are that at least one retracing spring is arranged between the left end; The moving shoe plate assembly of limited customization is around the inhibiting device of bearing pin hunting range on the dragging plate; An above-mentioned end of pedestal is that an above-mentioned end of left end and dragging plate is that left end is separately installed with and can clamps the limit switch and the pressing plate that can make it conducting of actuating signal by output safety.
Principle of work of the present utility model and course of action are as follows: when elevator moves generation hypervelocity out of control, when speed reaches velocity limiter mechanical action speed, velocity limiter output mechanical action signal, the drag-line that tension links to each other with safety tongs, the drag-line displacement signal passes to that links to each other with safety tongs, pull bar on the pulling safety tongs, pull bar drive dragging plate vertically rolling or slide (toward moving to left); Be with the brake block component synchronization to move during the dragging plate slippage simultaneously, when shoe plate assembly contacts with traction sheave, owing to shoe plate assembly can be swung around bearing pin, so, at first automatically, carry out the adjustment of self-angle, the upper surface of shoe plate assembly and the lower surface of traction sheave are fitted; Behind the upper surface and traction sheave lower surface closed contact of shoe plate assembly, because rubbing effect, both are in self-locking state, and this moment, the rotatory inertia of traction sheave further dragged shoe plate assembly locking, last stop elevator carrying means; Simultaneously, in the dragging plate moving process, pressing plate is depressed the contact of limit switch, and the affirmation signal that limit switch output safety pincers have moved gives the towing machine control system to cut off the power supply of towing machine.
After adopting above structure, the utlity model has following advantage:
It had both kept the advantage that acts on the drg on the traction sheave of prior art, had overcome the whole shortcomings that act on the drg on the traction sheave of prior art again:
Compare with the bidirectional safety tongs on acting on car, the safety tongs that originally acts on the traction sheave has been set up a up safety tongs that acts on the traction sheave on the basis of the descending unidirectional safety tongs of original car, make structure become very reasonable.The driving of safety tongs drives the descending safety tongs on the car and passes through the up safety tongs of drag-line driving action on traction sheave by steel wire respectively.Because steel rope and drag-line are independent separately, there is not the possibility of two-way misoperation this structure in itself, even produced misoperation, the reliable early work of operating personal is used in the safety tongs on the traction sheave, the earlier manual up safety tongs of release action on traction sheave, the descending safety tongs of release action on car again makes the release of uplink and downlink safety tongs all very laborsaving, convenient, reliable.
Compare with the safety tongs on acting on counterweight, originally the safety tongs that acts on the traction sheave only needs to set up the simple brake equipment of a nested structure on traction sheave, originally the total of elevator need not done any change as operation guide rail etc., need not to increase equipment such as velocity limiter yet, and cost is reduced significantly.
Compare with the wire holder on acting on hoist ropes, originally the stop mechanism that acts on the safety tongs on the traction sheave acts on the inoperative surface of traction sheave, in braking procedure, can not cause damage to carrying means, more can not influence the normal operation of traction sheave, transformation to old elevator also only need be installed this device additional, and whole elevator mechanism and machine room all need not done change, have saved human and material resources, financial resources significantly.
And compare with the drg that acts on the traction sheave of prior art, originally act on the safety tongs on the traction sheave, it is simple in structure, volume is little, low cost of manufacture, and because the generation of braking force is brake shoe sheet and traction sheave applying back self-locking friction stop by the brake block assembly, braking force compresses generation by the traction sheave self-locking, and cut off the power supply of towing machine simultaneously, and because the safety pincers are in the triggering state for the treatment of all the time when inoperative, be that elevator is failure to actuate when normal operation, so just avoided drg fully because the poor reliability that frequent folding produces, wearing and tearing are big, a series of shortcomings such as noise is big, make the working stability of safety pincers, reliably, safety, it is little to wear and tear, noiselessness when not working.
Description of drawings:
Fig. 1 is the main TV structure scheme drawing of safety pincers.
Fig. 2 is the plan structure scheme drawing of safety pincers.
Fig. 3 is the semi-sictional view structural representation among Fig. 2.
Shown in the figure 1, locating plate, 2, baffle plate, 3, drag-line, 4, briquetting, 5, bolt, 6, the hole, 7 adjust piece,, 8, limit switch, 9, pull bar, 10, the brake block assembly, 10 ', the brake shoe sheet, 10 "; brake shoe body; 11; spring, 12; locating dowel pin, 13; traction sheave, 14, recoil spring, 15, flat gasket, 16, bearing cap shim, 17, bridge plate, 18, bolt, 19, spring cotter, 20, bearing pin, 21, screw, 22, flat gasket, 23, dragging plate, 24, bolt, 25, pilot bar, 26, retracing spring, 27, the roller stand assembly, 28, screw, 29 pressing plates, 30, bolt, 31, bolt, 32, guide plate.
The specific embodiment:
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
As Fig. 1, Fig. 2, shown in Figure 3, the utility model acts on to have on the pedestal of the safety tongs on the traction sheave installation of pedestal own promptly is fixed tightly in device on the towing machine support of traction sheave 13 belows, as for binding bolt four holes 6 of usefulness being installed among Fig. 2.Pedestal (reaches spring washer and flat gasket by each locating piece 1 of two ends, middle two each bridge plates 17 and each prostrate L shaped briquetting 4 of two ends through a plurality of bolts 31,30, be tightened to an integral body down together), become as a whole pedestal, be each prostrate L type briquetting 4 of two ends entity part one end and middle both sides respectively a bridge plate 17 fasten as one through four bolts 30 of every end, the breach left end of two prostrate L type briquettings 4 towards left and right end towards the right side; Simultaneously, an end jaggy of briquetting 4 fastens as one itself and locating plate 1 through each two bolt 31 of every end.Four holes 6 are located on the locating plate 1 of pedestal.Two recoil springs 14 and two flat gaskets 15 of adjusting amount of spring compression of being through respectively on two bolts 31 are arranged, i.e. a recoil spring 14 and a flat gasket 15 on bolt 31 between briquetting 4 that right-hand member bolt 31 compresses and locating plate 1.The general butterfly springs that adopt of spring 14, it mainly acts on is a pressure block 4, clamping in safety simultaneously provides buffering when in running order.When being installed on the towing machine support, available bearing cap shim 16 adjust the height of pedestals so that adjust the top of brake shoe sheet 10 ' of following brake block assembly 10 and the bottom of traction sheave 13 between the gap.
There is longitudinally (i.e. left and right directions among the figure, down with) to roll on the pedestal to cooperate or be slidingly fitted in dragging plate 23 on the pedestal.Present embodiment adopts to roll and cooperates, be that each is fixed with each guide plate 32 to constitute the rolling groove of roller stand assembly 27 through two bolts 18 by two outsides (both sides up and down among Fig. 2) of roller stand assembly 27, two bridge plates of being made up of a plurality of rollers and retainer 17 between dragging plate 23 and the bridge plate 17.
Have on the dragging plate 23 through bearing pin 20 pivotally attached brake block assemblies 10, in other words, be hinged with brake block assembly 10 through bearing pin 20 on the dragging plate 23, promptly brake block assembly 10 can be done longitudinal oscillation around bearing pin 20.Spring cotter 19 is in order to keep a grip on bearing pin 20 in case scurry out in front and back.Brake shoe body 10 in the brake block assembly 10 " bottom side view longitudinally big triangle for down little; Dragging plate 23 side view longitudinally is that up-small and down-big triangle is more to adapt to above-mentioned swing.Brake shoe sheet 10 ' in the described brake block assembly 10 is a high-abrasive material, and the top arc surface shape of brake shoe sheet 10 ' and the excircle arc surface shape of traction sheave 13 match.The moving shoe plate assembly 10 of limited customization is around the inhibiting device of bearing pin 20 hunting ranges on the dragging plate 23, present embodiment adopts following concrete structure: have one and be enclosed within on the locating dowel pin 12 and support to brake shoe body 10 on the right hypotenuse breach of dragging plate 23 triangles " support spring 11 of bottom; on the left hypotenuse breach of dragging plate 23 triangles a caging bolt 24 is arranged, described locating dowel pin 12 and caging bolt 24 are roughly contour.Under off working state, brake block assembly 10 is swing left under the antagonistic force of spring 11, and caging bolt 24 guarantees that the upper surface and the gap between traction sheave 13 lower surfaces of brake shoe sheet 10 ' of brake block assembly 10 under off working state is even.
One end of dragging plate 23 is a left end through pull bar 9 is that an end of the drag-line 3 on the left end is connected with being installed in pedestal one end, and the other end of drag-line 3 is connected with the up velocity limiter of towing machine.The structure of drag-line 3 is identical with the structure of the brake cable of bicycle, and also being has a steel wire in the overcoat, and the overcoat at two ends is fixed on separately the pedestal, and the steel wire two ends in the overcoat are connected with pull bar 9 and up velocity limiter (pull bar) respectively.One end of described drag-line 3 is installed on the left end of pedestal and refers to that an end of drag-line 3 overcoats is installed on the briquetting 4 of left end through baffle plate 2.The screw thread of one end of pull bar 9 screws in the tapped bore of dragging plate 23, and the other end of pull bar 9 is connected with an end of the steel wire of drag-line 3 through bolt 5 (and nut).At least one retracing spring 26 is arranged between the briquetting 4 of dragging plate 23 and left end, and it is enclosed within on the pull bar 9 between the briquetting 4 of dragging plate 23 and left end.Pull bar 9 sliding fits are in the pilot hole of the briquetting 4 of left end; The left end of described dragging plate 23 has two pilot bars 25, they with pull bar 9 parallel and same sliding fits in the pilot hole of the briquetting 4 of left end.Described retracing spring 26 has three, on being enclosed within pull bar 9, also have on two two pilot bars 25 that are enclosed within respectively between dragging plate 23 and the left end briquetting 4.At the two ends of retracing spring 26 flat gasket 22 is arranged respectively, snap in the pilot hole of briquetting 4 to prevent retracing spring 26.
Be separately installed with and clamp the limit switch 8 and the pressing plate 29 that can make it conducting of actuating signal by output safety at the left end of pedestal and the left end of dragging plate 23.Limit switch 8 through screw 28 be fixed on the briquetting 4 of left end the front side (among Fig. 1 over against an observable side, down with), its position can be regulated with adjusting piece 7, pressing plate 29 also can claim to re-pack and be fixed on the front side of dragging plate 23 left ends through screw 21.
Concrete structure of the present utility model allows various variations, as: pedestal being installed in the device on the towing machine support of traction sheave 13 belows, can also be other structures such as elongated slot that usefulness is installed for binding bolt; Dragging plate 23 vertically rolls and is engaged on the pedestal can also be that structures such as bearing are directly adorned in the bottom of dragging plate 23; The structures such as slide mechanism that dragging plate 23 can also longitudinal sliding motion be engaged on the pedestal as adopts the dovetail furrow of the planker of known lathe to match with guide rail; Briquetting 4 also can be other concrete shape, pedestal also can be locating plate 1 with 17 of bridge plates as an integral body or even briquetting 4, locating plate 1 and bridge plate 17 whole as a whole pedestals etc.; Pull bar 9 also can pass through in the groove of briquetting 4 rather than hole; Pilot bar 25 also can be structures such as guided way, groove match; The concrete shape of brake block assembly 10 and dragging plate 23 and the concrete structure that is hinged also allow and change as hinged again etc. behind the male and female fit; Limit the inhibiting device of brake block assembly 10 around bearing pin 20 hunting ranges, also can adopt between brake block assembly 10 and the dragging plate 23 about end all use two structures such as extension spring pulling; Or the like.These variations all fall in the protection domain of the present utility model.
Claims (9)
1, a kind of safety tongs that acts on the traction sheave comprises pedestal, it is characterized in that: have on the pedestal it is installed in device on the towing machine support of traction sheave (13) below; Having on the pedestal longitudinally rolls cooperates or is slidingly fitted in dragging plate (23) on the pedestal, have on the dragging plate (23) through bearing pin (20) pivotally attached brake block assembly (10), one end of dragging plate (23) is connected with a end of drag-line (3) on being installed in pedestal one end through pull bar (9), the other end of drag-line (3) is connected with the up velocity limiter of towing machine, between the above-mentioned end of dragging plate (23) and pedestal at least one retracing spring (26) is arranged; Dragging plate (23) is gone up the inhibiting device of the moving shoe plate assembly (10) of limited customization around bearing pin (20) hunting range; An above-mentioned end of pedestal and an above-mentioned end of dragging plate (23) are separately installed with the pressing plate (29) that can output safety clamps the limit switch of actuating signal (8) and can make it conducting.
2, safety tongs according to claim 1 is characterized in that: the brake shoe sheet (10 ') in the described brake block assembly (10) is a high-abrasive material, and the excircle arc surface shape of the arc surface shape at brake shoe sheet (10 ') top and traction sheave (13) matches.
3, safety tongs according to claim 1 and 2 is characterized in that: the bottom side view longitudinally of the brake shoe body in the described brake block assembly (10) (10 ") big triangle for little down; Described dragging plate (23) side view longitudinally is up-small and down-big triangle.
4, safety tongs according to claim 3, it is characterized in that: described qualification brake block assembly (10) refers to around the inhibiting device of bearing pin (20) hunting range, on the right hypotenuse breach of dragging plate (23) triangle, there is one to be enclosed within locating dowel pin (12) and to go up and support; on the hypotenuse breach of dragging plate (a 23) triangle left side caging bolt (24) is arranged, described locating dowel pin (12) and caging bolt (24) are roughly contour to the support spring (11) of brake shoe body (10 ") bottom.
5, safety tongs according to claim 1 is characterized in that: described pedestal is tightened to an integral body by each locating piece (1) of two ends, middle two each bridge plates (17) and each prostrate L shaped briquetting (4) of two ends through a plurality of bolts (31,30).
6, safety tongs according to claim 1 or 5 is characterized in that: described pull bar (9) sliding fit is in the pilot hole of the briquetting (4) that the above-mentioned end of pedestal is a left end; One end of described drag-line (3) is installed on pedestal one end and refers to, an end of drag-line (3) is installed on the briquetting (4) of left end through baffle plate (2).
7, safety tongs according to claim 6 is characterized in that: the left end of described dragging plate (23) has two pilot bars (25), they with the parallel and same sliding fit of pull bar (9) in the pilot hole of left end briquetting (4); Described retracing spring (26) has three,, they are enclosed within respectively on the pull bar (9) and pilot bar (25) between dragging plate (23) and the left end briquetting (4).
8, safety tongs according to claim 1 or 5 is characterized in that: between the locating piece (1) away from the prostrate L shaped briquetting (4) of pull bar (9) other end and this end two recoil springs (14) that are enclosed within on the bolt (31) are arranged.
9, safety tongs according to claim 1 or 5, it is characterized in that: described dragging plate (23) longitudinally rolls to be engaged on the pedestal and refers to, by the roller stand assembly of being made up of a plurality of rollers and retainer (27), two outsides of two bridge plates (17) respectively are fixed with a guide plate (32) to constitute the rolling groove of roller stand assembly (27) between dragging plate (23) and the bridge plate (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620043368 CN200985260Y (en) | 2006-06-26 | 2006-06-26 | Safety clamp acting on traction wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620043368 CN200985260Y (en) | 2006-06-26 | 2006-06-26 | Safety clamp acting on traction wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200985260Y true CN200985260Y (en) | 2007-12-05 |
Family
ID=38914719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620043368 Expired - Lifetime CN200985260Y (en) | 2006-06-26 | 2006-06-26 | Safety clamp acting on traction wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200985260Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101734532B (en) * | 2009-12-14 | 2011-08-24 | 苏州通润驱动设备股份有限公司 | Safety brake device acting on traction sheave of tractor |
| CN108750891A (en) * | 2018-08-10 | 2018-11-06 | 秦川机床工具集团股份公司 | A kind of planetary gear driver |
| CN111099502A (en) * | 2019-11-27 | 2020-05-05 | 中铁隧道局集团建设有限公司 | Be applicable to large-scale portal crane deep basal pit construction braking system safe operation monitoring device |
-
2006
- 2006-06-26 CN CN 200620043368 patent/CN200985260Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101734532B (en) * | 2009-12-14 | 2011-08-24 | 苏州通润驱动设备股份有限公司 | Safety brake device acting on traction sheave of tractor |
| CN108750891A (en) * | 2018-08-10 | 2018-11-06 | 秦川机床工具集团股份公司 | A kind of planetary gear driver |
| CN111099502A (en) * | 2019-11-27 | 2020-05-05 | 中铁隧道局集团建设有限公司 | Be applicable to large-scale portal crane deep basal pit construction braking system safe operation monitoring device |
| CN111099502B (en) * | 2019-11-27 | 2021-03-26 | 中铁隧道局集团建设有限公司 | Be applicable to large-scale portal crane deep basal pit construction braking system safe operation monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NINGBO AMBITIOUS ELEVATOR CO. Free format text: FORMER OWNER: NINGBO XINDA ELEVATOR SPARE ELEMENT FACTORY Effective date: 20080912 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080912 Address after: Zhejiang Province, Ningbo City, Yinzhou District East Road, concentric Wuzhen, zip code: 315113 Patentee after: Ningbo Hongda Elevator Co., Ltd. Address before: Zhejiang city of Ningbo province Yinzhou District east Wu, zip code: 315113 Patentee before: Ningbo Xinda Elevator Fitting Works |
|
| CX01 | Expiry of patent term |
Granted publication date: 20071205 |
|
| EXPY | Termination of patent right or utility model |