CN206108606U - Elevator overspeed protective device - Google Patents
Elevator overspeed protective device Download PDFInfo
- Publication number
- CN206108606U CN206108606U CN201621179220.6U CN201621179220U CN206108606U CN 206108606 U CN206108606 U CN 206108606U CN 201621179220 U CN201621179220 U CN 201621179220U CN 206108606 U CN206108606 U CN 206108606U
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- China
- Prior art keywords
- block
- brake
- voussoir
- brake block
- elevator
- 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.)
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Abstract
The utility model discloses an elevator overspeed protective device, two overspeed protection devices of in elevator car outside both sides are set up including the symmetry, the sub - device of overspeed protection include hypervelocity arrestment mechanism, safety tongs mechanism and the micro -gap switch who is connected with elevator safety loop electricity, hypervelocity arrestment mechanism include that chassis, speed limit wheel, brake disc and two get rid of the piece, safety tongs mechanism including the braking steel cable, voussoir and brake pads, the braking steel cable one end with the brake disc connect, should brake the other end of steel cable and be connected with the brake pads, the brake pads portable and near elevator car's guide rail under the effect of braking steel cable and voussoir, micro -gap switch set up in the contact surface of voussoir and brake pads.
Description
Technical field
The present invention relates to elevator technology field, particularly a kind of elevator overspeed protecting device.
Background technology
Elevator is a kind of vertical conveyor with motor as power, equipped with box like gondola, for tier building take advantage of people or
Carrying goods.Elevator has become important building as the transport facility of vertical direction in skyscraper and public place
Build equipment and indispensable.With the development of computer technology, automatic technology and Power Electronic Technique, modem elevator into
For typical electromechanical integrated product.With the raising of overall national economy strength, the life consumption level of the people rises appreciably,
Real estate developer releases energetically one after another medium-to-high grade little high-rise and high-rise residential building, has driven increasing rapidly for residential lift,
Become the main growth factor in whole elevator market.
Existing elevator, its limiter of speed and safety tongs are separate, and limiter of speed is installed on machine room, and safety tongs is installed on sedan-chair
Frame, in addition it is also necessary to install over-speed governor tensioning apparatus in pit, is tensioned limiter of speed, safety tongs and limiter of speed by speed limiter wire rope
Device links together.Due to floor it is too high when, speed limiter wire rope is long and installation difficulty and limiter of speed steel wire easily occurs
The lax phenomenon of rope, fault rate is higher, and manufacture and installation cost are higher, and repair and maintenance are also relatively difficult.
The content of the invention
Present invention aims to the deficiencies in the prior art and a kind of elevator overspeed protecting device is provided, can drop significantly
Less trouble, reduces manufacture and installation cost so that repair and maintenance and be easily installed.
The technical scheme is that：A kind of elevator overspeed protecting device, including being symmetricly set in the outer both sides of lift car
Two overspeed protection sub-devices, described overspeed protection sub-device includes automatic brake mechanism, safe jaw mechanism and and elevator
The microswitch of safety return circuit electrical connection；Block gets rid of including underframe, speed limited wheel, brake disc and two in described automatic brake mechanism,
The axis vertical with the guide rail of lift car is provided with described underframe, described speed limited wheel and brake disc is rotatably arranged
On axis, and the guide rail contact of the speed limited wheel periphery and lift car, the speed limited wheel is near the side of brake disc with it
The center of circle is symmetrically arranged with two bearing pins, and block is eccentric respectively is arranged on two bearing pins, and described in two for getting rid of described in two
Get rid of block and be centrosymmetric setting with the center of circle of speed limited wheel, the described block that gets rid of is provided with ratchet away from one end of its correspondence bearing pin, its
In one get rid of block and be connected with speed limited wheel by extension spring away from one end of bearing pin, and this gets rid of block and passes through connecting rod near one end of bearing pin
Block is got rid of with another to be flexibly connected away from one end of bearing pin, be provided with the brake disc and the groove and spine for getting rid of block phase wedging
Tooth；Described safe jaw mechanism includes braking steel cable, voussoir and brake block, one end and the described brake disc of the braking steel cable
Connection, the other end of the braking steel cable is connected with brake block, and described brake block is removable in the presence of braking steel cable and voussoir
Guide rail dynamic and near lift car；Described microswitch is arranged at the contact surface of voussoir and brake block.
Speed limited wheel and guide rail contact, when elevator is static, speed limited wheel does not rotate, and gets rid of block and keeps in the presence of extension spring
The position that the heart is tightened；When elevator declines, guide rail can drive speed limited wheel to rotate, when lift car decrease speed is normal, centrifugation
Power makes to get rid of block and swings out around bearing pin and keep balance with the elastic force of extension spring, and the space between ratchet and ratchet reduces；Work as elevator
When car reaches the speed of overspeed protective device setting, under the influence of centrifugal force, get rid of block and swing out around bearing pin and more than drawing
The elastic force constraint of spring, ratchet and ratchet engagement, get rid of block and drive disc rotation, and brake disc drives braking steel cable again, by brake block
Pull-up, brake block will touch microswitch so as to disconnect the safety return circuit of elevator in the presence of braking steel wire and voussoir, make electricity
Terraced main frame is out of service, and reaches the purpose slowed down to lift car near guide rail and by the frictional force between guide rail.
The present invention is integrated automatic brake mechanism and safe jaw mechanism, can substantially reduce fault rate, reduce manufacture and
Installation cost so that repair and maintenance and be easily installed, solves speed limiter wire rope in prior art long and easily occur installing
The phenomenon that difficult and speed limiter wire rope relaxes, so as to causing trouble rate is higher, manufacture and installation cost are higher, and repair and maintenance also compare
Difficult the problems such as.
Preferably, the elevator overspeed protecting device includes multipair overspeed protection for being arranged at elevator car roof and bottom
Device.
By into symmetrically arranged overspeed protection sub-device lift car being made more to balance in overspeed protection, car is protected
The security of the lives and property of interior passenger.
Preferably, described brake disc is arranged on described axis by unilateral bearing.
Connect brake disc and axis using unilateral bearing so that brake disc can only rotate under the drive for getting rid of block, and cannot
Revolution, prevents brake disc during overspeed protection from turning round so that brake block drops loses the effect clamped down on.
Preferably, described voussoir and brake block may be contained within underframe and positioned at the lower section of brake disc, described voussoir
Right-angled trapezium shape is with brake block；Described voussoir is wide at the top and narrow at the bottom, and the hypotenuse of the voussoir is near brake block；Described brake block
Up-narrow and down-wide, the hypotenuse of the brake block is near voussoir；The height of the voussoir is more than the height of brake block, described microswitch
The contact surface of voussoir and brake block is arranged at, and the microswitch is higher than brake block.
The safety tongs mechanism structure of the structure is simple, coordinates accurate, before safety tongs protection good protection function is ensured
Put further cost-effective.
Preferably, one end that the braking steel cable connects the brake block is provided with hook, and described braking steel cable passes through
The hook is connected with brake block.
After elevator overspeed protecting device carries out overspeed protection, it is only necessary to which hook is removed from brake block, then will system
Moving plate is rotated to make again to hang over hook after the reset of braking steel cable and be ready on brake block overspeed protection next time, and reset operation
It is simple and convenient, it is reusable.
Preferably, the periphery of the speed limited wheel is provided with skid resistant course.
When elevator declines, skid resistant course can ensure that guide rail can accurately drive speed limited wheel to rotate, it is to avoid during elevator overspeed, speed limited wheel
Elevator overspeed cannot be correctly detecting, while can also reduce the abrasion of speed limited wheel, be increased the service life.
Preferably, the brake block is provided with damping friction layer with the one side of the guide rail contact of lift car.
Damping friction layer can provide bigger frictional force when elevator overspeed is more, can be in elevator overspeed quickly to elevator
Slowed down, while can also reduce the abrasion of brake block, it is ensured that elevator overspeed protecting device normally runs, and increases the service life.
Preferably, the brake block is contacted respectively under the pulling of braking steel cable with the guide rail and speed limited wheel of lift car,
The one side that the brake block is contacted with speed limited wheel is provided with damping friction layer.
When elevator overspeed, the brake block being pulled up with guide rail contact when being slowed down, moreover it is possible to contacts anti-with speed limited wheel
Only speed limited wheel is rotated further, and makes the rolling friction between speed limited wheel and guide rail be changed into sliding friction, further increases frictional force, from
And make slowing effect more notable.
The invention has the beneficial effects as follows：
1st, automatic brake mechanism and safe jaw mechanism are integrated, fault rate can be substantially reduced, reduced manufacture and install
Cost so that repair and maintenance and be easily installed, solves speed limiter wire rope in prior art long and installation difficulty easily occur
The phenomenon relaxed with speed limiter wire rope, so as to causing trouble rate is higher, manufacture and installation cost are higher, and repair and maintenance are also relatively difficult
The problems such as.
2nd, by into symmetrically arranged overspeed protection sub-device lift car being made more to balance in overspeed protection, sedan-chair is protected
The security of the lives and property of passenger in railway carriage or compartment；
3rd, brake disc and axis are connected using unilateral bearing so that brake disc can only rotate under the drive for getting rid of block, and nothing
Method is turned round, and prevents brake disc during overspeed protection from turning round so that brake block drops loses the effect clamped down on；
4th, safety tongs mechanism structure is simple, coordinates accurate, enters on the premise of safety tongs protection good protection function is ensured
One step is cost-effective；
5th, after elevator overspeed protecting device carries out overspeed protection, it is only necessary to which hook is removed from brake block, then will
Disc rotation makes braking steel cable again hang over hook after resetting and be ready on brake block overspeed protection next time, and reset behaviour
Make simple and convenient, it is reusable；
6th, when elevator declines, skid resistant course can ensure that guide rail can accurately drive speed limited wheel to rotate, it is to avoid during elevator overspeed, speed limit
Wheel cannot be correctly detecting elevator overspeed, while can also reduce the abrasion of speed limited wheel, increase the service life；
7th, damping friction layer can provide bigger frictional force when elevator overspeed is more, can be in elevator overspeed quickly to electricity
Ladder is slowed down, while can also reduce the abrasion of brake block, it is ensured that elevator overspeed protecting device normally runs, prolongation uses the longevity
Life；
8th, when elevator overspeed, the brake block being pulled up with guide rail contact when being slowed down, moreover it is possible to is contacted with speed limited wheel
Prevent speed limited wheel to be rotated further, make the rolling friction between speed limited wheel and guide rail be changed into sliding friction, further increase friction
Power, so that slowing effect is more notable.
Description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention；
Fig. 2 is the internal structure schematic diagram of underframe in the embodiment of the present invention；
Fig. 3 is structural representation of the speed limited wheel near brake disc side in the embodiment of the present invention；
Fig. 4 is structural representation of the brake disc near speed limited wheel side in the embodiment of the present invention；
Reference：100- overspeed protection sub-devices, 200- automatic brakes mechanism, 210- underframe, 220- axis, 230- limits
Speed wheel, 240- bearing pins, 250- gets rid of block, 251- ratchets, 260- connecting rods, 270- extension springs, 280- brake discs, 281- ratchets, 300-
Safe jaw mechanism, 310- braking steel cables, 320- voussoirs, 330- brake block, 400- microswitches, 500- lift cars, 600- leads
Rail.
Specific embodiment
Embodiments of the invention are described in detail below in conjunction with the accompanying drawings.
Embodiment
As Figure 1-4, a kind of elevator overspeed protecting device, including being symmetricly set in the two of the outer both sides of lift car 500
Individual overspeed protection sub-device 100, described overspeed protection sub-device 100 includes automatic brake mechanism 200, safe jaw mechanism 300
And the microswitch 400 electrically connected with elevator safety loop；Described automatic brake mechanism 200 includes underframe 210, speed limited wheel
230th, brake disc 280 and two get rid of block 250, are provided with described underframe 210 vertical with the guide rail 600 of lift car 500
Axis 220, described speed limited wheel 230 and brake disc 280 is rotatably arranged on axis 220, and the periphery of speed limited wheel 230
Contact with the guide rail 600 of lift car 500, the speed limited wheel 230 is symmetrical arranged near the side of brake disc 280 with its center of circle
There are two bearing pins 240, block 250 is eccentric respectively is arranged on two bearing pins 240 for getting rid of described in two, and gets rid of block described in two
250 are centrosymmetric setting with the center of circle of speed limited wheel 230, and the described block 250 that gets rid of is provided with away from one end of its correspondence bearing pin 240
Ratchet 251, one of them is got rid of block 250 and is connected with speed limited wheel 230 by extension spring 270 away from one end of bearing pin 240, and this gets rid of block
250 get rid of block 250 by connecting rod 260 near one end of bearing pin 240 with another is flexibly connected away from one end of bearing pin 240, institute
State the groove and ratchet 281 for being provided with brake disc 280 and getting rid of the phase wedging of block 250；Described safe jaw mechanism 300 includes braking
Steel cable 310, voussoir 320 and brake block 330, one end of the braking steel cable 310 is connected with described brake disc 280, the braking
The other end of steel cable 310 is connected with brake block 330, and described brake block 330 is in the presence of braking steel cable 310 and voussoir 320
Guide rail 600 removable and near lift car 500；Described microswitch 400 is arranged at voussoir 320 and brake block 330
Contact surface.
Wherein in one embodiment, the elevator overspeed protecting device include it is multipair be arranged at the top of lift car 600 and
The overspeed protection sub-device 100 of bottom.
Wherein in one embodiment, described brake disc 280 is arranged on described axis 220 by unilateral bearing.
Wherein in one embodiment, described voussoir 320 and brake block 330 may be contained within underframe 210 and positioned at system
The lower section of Moving plate 280, described voussoir 320 and brake block 330 is right-angled trapezium shape；Described voussoir 320 is wide at the top and narrow at the bottom, should
The hypotenuse of voussoir 320 is near brake block 330；Described brake block 330 is up-narrow and down-wide, and the hypotenuse of the brake block 330 is near voussoir
320；The height of the voussoir 320 is more than the height of brake block 330, and described microswitch 400 is arranged at voussoir 320 and braking
The contact surface of block 330, and the microswitch 400 is higher than brake block 330.
Wherein in one embodiment, one end that the braking steel cable 310 connects the brake block 330 is provided with hook,
Described braking steel cable 310 is connected by the hook with brake block 330.
Wherein in one embodiment, the periphery of the speed limited wheel 230 is provided with skid resistant course.
Wherein in one embodiment, the one side that the brake block 330 is contacted with the guide rail 600 of lift car 500 is arranged
There is damping friction layer.
Wherein in one embodiment, the brake block 330 braking steel cable 310 pulling under respectively with lift car
500 guide rail 600 and speed limited wheel 230 are contacted, and the one side that the brake block 330 is contacted with speed limited wheel 230 is provided with damping friction
Layer.
Embodiment described above only expresses the specific embodiment of the present invention, and its description is more concrete and detailed, but and
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the guarantor of the present invention
Shield scope.
Claims (8)
1. a kind of elevator overspeed protecting device, it is characterised in that including two overspeed protections being symmetricly set in outside lift car
Sub-device, described overspeed protection sub-device includes automatic brake mechanism, safe jaw mechanism and electrically connects with elevator safety loop
Microswitch；Block gets rid of including underframe, speed limited wheel, brake disc and two in described automatic brake mechanism, sets on described underframe
The axis vertical with the guide rail of lift car is equipped with, described speed limited wheel and brake disc is rotatably arranged on axis, and should
The guide rail contact of speed limited wheel periphery and lift car, the speed limited wheel is symmetrically arranged near the side of brake disc with its center of circle
Two bearing pins, block is eccentric respectively is arranged on two bearing pins for getting rid of described in two, and gets rid of block with speed limited wheel described in two
The center of circle is centrosymmetric setting, and the described block that gets rid of is provided with ratchet away from one end of its correspondence bearing pin, one of them get rid of block away from
One end of bearing pin is connected by extension spring with speed limited wheel, and this gets rid of block to get rid of block with another by connecting rod near one end of bearing pin remote
It is flexibly connected from one end of bearing pin, is provided with the brake disc and the groove and ratchet for getting rid of block phase wedging；Described safety tongs
Mechanism includes braking steel cable, voussoir and brake block, and one end of the braking steel cable is connected with described brake disc, the braking steel cable
The other end be connected with brake block, described brake block may move and near lift car in the presence of braking steel cable and voussoir
Guide rail；Described microswitch is arranged at the contact surface of voussoir and brake block.
2. elevator overspeed protecting device according to claim 1, it is characterised in that the elevator overspeed protecting device includes two
Overspeed protection sub-device to being respectively arranged at elevator car roof and bottom.
3. elevator overspeed protecting device according to claim 1 and 2, it is characterised in that described brake disc is by unidirectional
Bearing is arranged on described axis.
4. elevator overspeed protecting device according to claim 3, it is characterised in that described voussoir and brake block is respectively provided with
In underframe and positioned at the lower section of brake disc, described voussoir and brake block is right-angled trapezium shape；On described voussoir under width
Narrow, the hypotenuse of the voussoir is near brake block；Described brake block is up-narrow and down-wide, and the hypotenuse of the brake block is near voussoir；The wedge
More than the height of brake block, described microswitch is arranged at the contact surface of voussoir and brake block to the height of block, and the fine motion is opened
It is higher than brake block to close.
5. elevator overspeed protecting device according to claim 4, it is characterised in that the braking steel cable connects the braking
One end of block is provided with hook, and described braking steel cable is connected by the hook with brake block.
6. elevator overspeed protecting device according to claim 5, it is characterised in that the periphery of the speed limited wheel is provided with
Skid resistant course.
7. elevator overspeed protecting device according to claim 6, it is characterised in that the brake block is led with lift car
The one side of rail contact is provided with damping friction layer.
8. elevator overspeed protecting device according to claim 7, it is characterised in that drawing of the brake block in braking steel cable
Contact with the guide rail and speed limited wheel of lift car respectively under dynamic, the one side that the brake block is contacted with speed limited wheel is provided with damping and rubs
Wipe layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621179220.6U CN206108606U (en) | 2016-10-27 | 2016-10-27 | Elevator overspeed protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621179220.6U CN206108606U (en) | 2016-10-27 | 2016-10-27 | Elevator overspeed protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206108606U true CN206108606U (en) | 2017-04-19 |
Family
ID=58524820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621179220.6U Expired - Fee Related CN206108606U (en) | 2016-10-27 | 2016-10-27 | Elevator overspeed protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206108606U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106429698A (en) * | 2016-10-27 | 2017-02-22 | 宜春市特种设备监督检验中心 | Over-speed protection device for elevator |
| CN108584603A (en) * | 2018-07-12 | 2018-09-28 | 湖州德玛吉电梯有限公司 | Elevator overspeed protecting device |
| CN115072518A (en) * | 2022-06-16 | 2022-09-20 | 常熟理工学院 | Cordless speed-limiting safety tongs |
-
2016
- 2016-10-27 CN CN201621179220.6U patent/CN206108606U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106429698A (en) * | 2016-10-27 | 2017-02-22 | 宜春市特种设备监督检验中心 | Over-speed protection device for elevator |
| CN108584603A (en) * | 2018-07-12 | 2018-09-28 | 湖州德玛吉电梯有限公司 | Elevator overspeed protecting device |
| CN108584603B (en) * | 2018-07-12 | 2019-10-11 | 湖州德玛吉电梯有限公司 | Elevator overspeed protecting device |
| CN115072518A (en) * | 2022-06-16 | 2022-09-20 | 常熟理工学院 | Cordless speed-limiting safety tongs |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170419 Termination date: 20171027 |