CN201002903Y - Elevator speed limiter tensioning device - Google Patents
Elevator speed limiter tensioning device Download PDFInfo
- Publication number
- CN201002903Y CN201002903Y CNU2006201734018U CN200620173401U CN201002903Y CN 201002903 Y CN201002903 Y CN 201002903Y CN U2006201734018 U CNU2006201734018 U CN U2006201734018U CN 200620173401 U CN200620173401 U CN 200620173401U CN 201002903 Y CN201002903 Y CN 201002903Y
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- CN
- China
- Prior art keywords
- stopper element
- tensioner arm
- tension wheel
- tension
- downside
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- Expired - Lifetime
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Abstract
The utility model provides a tension device of overspeed governor of elevator, which comprises a tension wheel that can rotationally installed on the tension wheel bracket, a tension weight that is fixedly provided with the tension wheel bracket, a switch impact plate that is installed on the tension wheel bracket or the tension weight and a fixing bracket is fixed on the lead rail, a tension wheel arm whose two ends are pin joint with the fixing bracket and the tension wheel, a limit switch that is installed on the lead rail right under the switch impact plate and at least one lower stop unit and an upper stop unit that are installed on the fixing bracket. The lower stop unit is arranged under the tension arm wheel and the upper stop unit is arranged above the tension arm wheel. The stop unit support and stop the tension wheel arm. Thus, the depth of the bottom pit of the elevator well is reduced and the manufacturing cost is saved.
Description
Technical field
The utility model relates to a kind of elevator over-speed governor tensioning apparatus, meets associated safety standard GB7588-2003 to the slack-free requirement of governor rope.
Background technology
In service at elevator, owing to Control Failure, traction deficiency, brake failure or reasons such as braking force is not enough and overload drags, hoist ropes fracture all can cause the car hypervelocity and fall, therefore must take reliable protective measure.
Velocity limiter is the device of restriction elevator speed, generally is installed in machine room.The governor rope two ends are by governor sheave and tension wheel, link together with safety tongs connecting rod on the car frame, so the running velocity of car passes to governor sheave by governor rope.When elevator overspeed reached limit value, the velocity limiter action was braked governor rope, so along with car continues to move downward, governor rope manoeuvring safety pincers connecting rod is clamped on the guide rail safety tongs so that the car stop.In order to guarantee that enough friction force are arranged between governor rope and the governor sheave,, generally be provided with tightening device at the elevator hoistways pit to react the speed of car exactly.
Fig. 4 and Fig. 5 have shown a kind of tightening device of existing velocity limiter.This tightening device comprises: tension wheel support 12, be fixed on the support 12 and tension wheel 5, an end and tension wheel support 12 free to rotate can pivot that bonded assembly decide tensioner arm 4, the tensioning that is fixedly attached to tension wheel support 12 belows cuts or polish jade with an emery wheel 6, be arranged on the switch that tensioning cuts or polish jade with an emery wheel and hit plate 14, guide rail 13, be installed in fixed support 3 and stop bracket 2 on the guide rail 13, stop bracket 2 is positioned at the below of fixed support 3, the limit switch 7 of captiveing joint with guide rail 13, and governor rope 11 is walked around tension wheel 5 in the lower end.The other end of tensioner arm 4 is pivotably connected on the fixed support 3.By the pivot of tensioner arm 4 around its other end, tightening device can move up and down under the guiding of tensioner arm 4.And the moving down of 2 pairs of tensioner arm 4 of stop bracket that is positioned at fixed support 3 belows limited, thereby limit switch 7 is protected.Fig. 4 has shown in normal circumstances, the scheme drawing of over-speed governor tensioning apparatus and damper gear, wherein tensioner arm 4 is in the position of level basically, this moment, the center and the tensioner arm 4 of tension wheel 5 were alignd in the horizontal direction substantially, the end of stop bracket 2 does not contact with tensioner arm 4, and switch hits plate 14 and limit switch 7 is separated from each other.Fig. 5 has shown when speed limiter wire rope ruptures; the scheme drawing of over-speed governor tensioning apparatus and damper gear; wherein tensioner arm 4 tilts to pivot to guide tension wheel 5, tension wheel support 12 and tensioning stone roller 6 to descend together; the end portion supports tensioner arm 4 of stop bracket 2; the while switch hits plate 14 and engages with limit switch 7; thereby the cut-out elevator control circuit prevents that elevator from travelling under the safety tongs protection not having.
In above-mentioned prior art, because the stop bracket of installing on the guide rail of elevator pit occupies bigger installing space, and near stop bracket, also need to install other device such as rope stretch detecting device, pit ptotection gred support, therefore just strengthen the degree of depth of pit.The parts that the manufacturing of stop bracket itself and installation need have also further increased the manufacturing cost of elevator.
In addition, when velocity limiter moves to the speed limiter wire rope glancing impact, along with car further moves, the tightening device of speed limiter wire rope will upwards be beated, and the above-mentioned device of beating of any restriction is not set in the above-mentioned existing tightening device, be easy to make the tightening device of upwards beating to occur damaging.
The utility model content
The purpose of this utility model provides a kind of elevator over-speed governor tensioning apparatus that overcomes above-mentioned shortcoming; so that can reduce the quantity and the volume of institute's mounted component on the guide rail in the elevator pit; thereby reduce the degree of depth of pit, reduce manufacturing cost and make tightening device obtain better protection.
In order to realize above-mentioned purpose of the present utility model, the utility model proposes a kind of over-speed governor tensioning apparatus that is used for elevator, comprising: be rotatably installed in the tension wheel on the tension wheel support; With the hard-wired tensioning stone roller of tension wheel support, the switch that is provided with on tension wheel support or tensioning stone roller hits plate; Be fixedly mounted on the fixed support on the guide rail; At both ends respectively with fixed support and the tension wheel bonded assembly tensioner arm that can pivot; Be fixedly mounted on the limit switch on the guide rail, described limit switch be positioned at described switch hit plate under; And at least one downside stopper element that on fixed support, is provided with, described downside stopper element is positioned at the below of tensioner arm, and described stopper element supports and stop the tensioner arm that pivots.
Preferably, comprise that also at least one is arranged on the downside stopper element on the fixed support, wherein said downside stopper element is positioned at the below of tensioner arm, and described downside stopper element supports and stop the tensioner arm that pivots.
Preferably, described upside and downside stopper element are from support bracket fastened lip-deep outstanding, described stopper element is a kind of in stopper bolt, stop pin, block and the stop cap, and described stopper element and fixed support are integrally formed or are fixed together by be threaded, riveted joint etc.
Preferably, described upside and downside stopper element are made by metallic material or are made by the material that comprises plastics.
In described downside stopper element and tensioner arm position contacting, described tensioner arm is pivoted to downwards and makes switch hit plate to engage with limit switch.Preferably, the pivoting angle scope of described downside stopper element is between the 30-45 degree.
Preferably, upwards be pivoted in tensioner arm and make the move up position of a maximum allowable range of tension wheel, described upside stopper element contacts with tensioner arm.Preferably, described maximum allowable range is 37mm.
Tightening device of the present utility model has been removed the stop bracket that is installed in specially on the guide rail of the prior art, can the length of guide rail will be reduced like this, thereby reduce the degree of depth of elevator pit, also reduced in addition to be installed in and led the quantity of parts cashier's office in a shop, thereby further reduced manufacturing cost.The utility model also by having limited tightening device upwards beating when being subjected to lineoutofservice signal pull at the upside stopper element that is provided with on the fixed support, further provides protection to tightening device in addition.
Description of drawings
By with reference to following accompanying drawing, can further understand the utility model.
Fig. 1 is in generally structural representation according to elevator over-speed governor tensioning apparatus of the present utility model;
Fig. 2 is according to the view of elevator over-speed governor tensioning apparatus of the present utility model when governor rope ruptures;
Fig. 3 is according to the view of elevator over-speed governor tensioning apparatus of the present utility model when being subjected to lineoutofservice signal pull;
The structural representation of the elevator over-speed governor tensioning apparatus of Fig. 4 prior art;
The state when elevator over-speed governor tensioning apparatus of Fig. 5 prior art ruptures at speed limiter wire rope.
The specific embodiment
The structural representation of the tightening device of elevator governor of the present utility model at first, is described referring to figs. 1 through Fig. 3.The tightening device of the tightening device of the elevator governor shown in Fig. 1-3 and Fig. 4 of the prior art-5 is similar substantially, difference is to have removed at the stop bracket 2 that is installed in below the fixed support on the guide rail in the tightening device of Fig. 1 of the present utility model-3, is provided with upside and downside stopper element 1 and make on fixed support 3.Below the utility model is described in detail.
As can be seen from Figure 1, tightening device comprises: tension wheel support 12, be fixed on the support 12 and tension wheel 5, an end and tension wheel support 12 free to rotate can pivot that bonded assembly decide tensioner arm 4, the tensioning that is fixedly attached to tension wheel support 12 belows cuts or polish jade with an emery wheel 6, be arranged on the switch that tensioning cuts or polish jade with an emery wheel and hit plate 14, guide rail 13, be installed in the fixed support 3 on the guide rail 13 and stopper element 1 on the fixed support 3 is set, the limit switch 7 of captiveing joint with guide rail 13, governor rope 11 are walked around tension wheel 6 in the lower end.The other end of tensioner arm 4 is pivotably connected on the fixed support 3.By the pivot of tensioner arm 4 around its other end, tightening device can move up and down under the guiding of tensioner arm 4.And be positioned at mobile restriction of the 1 pair of tensioner arm 4 of stopper element on the fixed support 3.Fig. 1 has shown in normal circumstances, the scheme drawing of over-speed governor tensioning apparatus and damper gear, wherein tensioner arm 4 is in the position of level basically, this moment, the center and the tensioner arm 4 of tension wheel 5 were alignd in the horizontal direction substantially, stopper element 1 does not come in contact with tensioner arm 4, and switch hits plate 14 and limit switch 7 is separated from each other, and the distance that switch hits between plate 14 and the limit switch is L, for example is 100mm.In Fig. 1, the upside stopper element 1 that is provided with on the fixed support 3 be positioned at tensioner arm 4 above, and downside stopper element 1 is positioned at the below of tensioner arm, described stopper element is from support bracket fastened lip-deep outstanding.Stopper element for example can be concrete structures such as stopper bolt, stop pin, block or stop cap.Stopper element 1 can be integrally formed with fixed support, also can be to be fixed together by be threaded, riveted joint etc.Stopper element can be made by the metallic material identical with fixed support, perhaps can be by comprising that for example the material of plastics etc. is made, to alleviate the impact between stopper element and the tensioner arm.
In Fig. 2, shown according to the view of over-speed governor tensioning apparatus of the present utility model when fracture takes place governor rope.At this moment, because governor rope fracture, tension wheel 5, tension wheel support 12 and tensioning stone roller 6 move down under the guiding of the tensioner arm 4 that pivots together, engage up to being positioned at switch on the tensioning stone roller 6 limit switch 7 on hitting plate 14 and being fixed on guide rail 13, be positioned at the lower bond of stopper element 1 and tensioner arm 4 on the fixed support 3 simultaneously, stoping tensioner arm 4 guiding tension wheels 5, tension wheel support 12 and tensioning stone roller 6 to continue to move down, thereby limit switch etc. is caused damage.
Because switch hits admissible moving down apart from being L between plate 14 and the limit switch 7 in Fig. 1,100mm for example, therefore the position of the stopper element below tensioner arm 4 is arranged to make tensioner arm 4 to be pivoted to a maximum angle position downwards, the distance that tension wheel 5 descends on this maximum angle position is substantially equal to L, for example 100mm.This maximum angle position can change according to the difference of the length of tensioner arm 4.For example when guideway centreline be 250mm and tension wheel center during to the distance of velocity limiter near-end steel rope directly for 200mm, the maximum angle that pivots downwards of tensioner arm is 34 degree.In addition, what can replace is that the maximum angle that pivots downwards of tensioner arm is spent between 45 degree 30.This moment, the distance L of tension wheel 5 declines was substantially equal to 100mm, and switch hits plate 14 and limit switch 7 engages.So, be arranged to when tensioner arm 4 is pivoted to the maximum angle position downwards at the stopper element 1 of the downside on the fixed support 3, tensioner arm 4 is supported and stop.
Fig. 3 has shown the state of tightening device of the present utility model when velocity limiter is worked.When velocity limiter was worked, velocity limiter was braked speed limiter wire rope, was subjected to the pull of steel wire effect, and governor rope can drive the tension wheel 5 of tightening device and upwards beat, as shown in Figure 3.So the upwards pivoting action that is arranged on 1 pair of tensioner arm 4 of upside stopper element of fixed support 3 carries out stop, thereby prevent further upwards beating of tensioner arm and tension wheel and cause interference and impact with other parts.In preferred mode of the present utility model, so, the stopper element 1 of the upside on the fixed support 3 be arranged to when tensioner arm 4 upwards be pivoted to a maximum that allows move up apart from the time, tensioner arm 4 is supported and stop.This maximum moves up distance for example for about about 37mm.
Elevator over-speed governor tensioning apparatus of the present utility model can also improve on the basis of the foregoing description and change.For example by a series of through holes or groove on fixed support, the fixed position of stopper element on fixed support is can be adjustable according to concrete mounting condition.On fixed support, the downside stopper element can only be set in addition.Can on fixed support, along maximum permission pivoting angle a plurality of downside stopper elements and/or a plurality of upside stopper element be set respectively in addition.In addition, switch hits plate and also can be arranged on the tension wheel support.
[symbol description]
1 stopper element
2 stop brackets
3 fixed supports
4 tensioner arm
5 regulating wheels
6 tensionings stone roller
7 limit switches
11 speed limiter wire ropes
12 tension wheel supports
13 guide rails
14 switches hit plate
Claims (9)
1. elevator over-speed governor tensioning apparatus comprises:
Be rotatably installed in the tension wheel on the tension wheel support;
With the hard-wired tensioning stone roller of tension wheel support, the switch that is provided with on tension wheel support or tensioning stone roller hits plate;
Be fixedly mounted on the fixed support on the guide rail;
At both ends respectively with fixed support and the tension wheel bonded assembly tensioner arm that can pivot;
Be fixedly mounted on the limit switch on the guide rail, described limit switch be positioned at described switch hit plate under; And
It is characterized in that described tightening device comprises that also at least one is arranged on the downside stopper element on the fixed support, wherein said downside stopper element is positioned at the below of tensioner arm, and described downside stopper element supports and stop the tensioner arm that pivots.
2. device according to claim 1, it is characterized in that, comprise that also at least one is arranged on the upside stopper element on the fixed support, wherein said upside stopper element is positioned at the top of tensioner arm, and described upside stopper element supports and stop the tensioner arm that pivots.
3. device according to claim 2 is characterized in that, described upside and downside stopper element be from support bracket fastened lip-deep outstanding, and described stopper element is a kind of in stopper bolt, stop pin, block and the stop cap.
4. device according to claim 2 is characterized in that, described stopper element is integrally formed with fixed support or they are by being threaded or riveted and fixed links together.
5. device according to claim 2 is characterized in that, described upside and downside stopper element are made by metallic material or made by the material that comprises plastics.
6. according to the described device of one of claim 1-5, it is characterized in that in described downside stopper element and tensioner arm position contacting, described tensioner arm is pivoted to and makes switch hit plate to engage with limit switch downwards.
7. device according to claim 6 is characterized in that, the pivoting angle scope of described downside stopper element is between the 30-45 degree.
8. according to the described device of one of claim 1-5, it is characterized in that upwards be pivoted in tensioner arm and make the move up position of a maximum allowable range of tension wheel, described upside stopper element contacts with tensioner arm.
9. device according to claim 8 is characterized in that, described maximum allowable range is 37mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201734018U CN201002903Y (en) | 2006-12-15 | 2006-12-15 | Elevator speed limiter tensioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201734018U CN201002903Y (en) | 2006-12-15 | 2006-12-15 | Elevator speed limiter tensioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201002903Y true CN201002903Y (en) | 2008-01-09 |
Family
ID=39038444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201734018U Expired - Lifetime CN201002903Y (en) | 2006-12-15 | 2006-12-15 | Elevator speed limiter tensioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201002903Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103318722A (en) * | 2013-06-27 | 2013-09-25 | 南通通洋机电制造有限公司 | Tensioning wheel assembly of speed limiter |
-
2006
- 2006-12-15 CN CNU2006201734018U patent/CN201002903Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103318722A (en) * | 2013-06-27 | 2013-09-25 | 南通通洋机电制造有限公司 | Tensioning wheel assembly of speed limiter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080109 |
|
| EXPY | Termination of patent right or utility model |