CN1397480A - Speed-limiting safety jaw - Google Patents
Speed-limiting safety jaw Download PDFInfo
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- CN1397480A CN1397480A CN 02136538 CN02136538A CN1397480A CN 1397480 A CN1397480 A CN 1397480A CN 02136538 CN02136538 CN 02136538 CN 02136538 A CN02136538 A CN 02136538A CN 1397480 A CN1397480 A CN 1397480A
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- centrifugal
- wheel
- speed
- centrifugal wheel
- safety tongs
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Abstract
A speed-limiting safety tongs installed under cage is composed of speed limiter and safety tongs. The said speed limiter is composed of centrifugal wheel, centrifugal block sliding in the centrifugal wheel, left and right jaws, and drive mechanism consisting of engaging spring, gear and connecting rod. When elevator is running at overspeed, the centrifugal block is separated from the centrifugal wheel to make the left and right jaws to engage, resulting in rotation of output axle, which makes connecting rod move up and down. Under the drive of connecting rod, the axle is rotating to make the eccentric wheels to clamps the track of elevator, so braking elevator. Its advantage is simple structure.
Description
Technical field
The present invention relates to a kind of speed-limiting safety jaw of elevator industry, specifically a mechanical device that is installed in the car bottom to the pulling force of a machinery of safety tongs, makes safety tongs can block the device of hoistway guide rail when the car overspeed.
Background technology
Traditional velocity limiter is loaded in the machine room of elevator hoistways top layer, and the safety tongs of elevator is another independent brake equipment, is installed in the car bottom.Normally utilize the steel rope that is suspended in the governor rope race to be connected with the safety tongs connecting rod mechanism of car bottom, and extend to bottom the hoistway always, walk around in the rope sheave groove that the tension wheel that is installed in the pit turns back to elevator hoistways top layer velocity limiter again, constitute circulation and connect.When cage operation surpasses command speed, rope sheave rotating speed on the velocity limiter quickens and surpasses to set rotating speed, centrifugal on the rope sheave button is driven spring buckle under centrifugal action, makes steel rope voussoir locking steel rope, and this moment, car was still done overspeed, so car and steel rope produce a relative motion, the power of this relative motion is stirred the catch gear of safety tongs, with wedging of the voussoir in the safety tongs or eccentric off-centre, clamp elevator rail, prevent elevator to do the hypervelocity motion.Therefore the use of traditional velocity limiter, the top layer machine room of elevator hoistways must leave sufficient space, makes " steel rope ", " tension wheel " make circulating motion.In current machine-roomless lift, can't adopt this traditional velocity limiter again.The patent No. is " 85109248 ", " elevator brake and safety tongs ", and it is that Ka Zha with two fluid controls is installed in car top, and blocks guide rail.According to " the building industry standard JG-1996 of People's Republic of China (PRC) regulation bans use of electricly, and the device of hydraulic pressure or pneumatic actuation comes the manoeuvring safety pincers, so this elevator brake and safety tongs can't be applied.
Summary of the invention
The objective of the invention is to defective and deficiency at above-mentioned prior art, be elevator industry, especially machine-roomless lift designs a kind of speed-limiting safety jaw simple in structure, stable and reliable for performance.Technical scheme of the present invention is achieved in that this speed-limiting safety jaw is to be combined in one by velocity limiter and safety tongs two large divisions, and is installed in the car bottom.
Wherein velocity limiter includes the transmission device that centrifugal wheel, centrifugal, left and right tooth embedding and gear, connecting rod are formed; The wheel shaft close fit of left side tooth embedding and centrifugal wheel, centrifugal is sleeved in the centrifugal wheel, and with the centrifugal wheel free-running fit, centrifugal end face is fixed with plate washer, and it separates left and right tooth embedding, and engage spring is equipped with in the bottom of right side tooth embedding, input gear in the transmission device is assemblied in right side tooth build-in and fixes on the sleeve, when elevator overspeed moves, can mesh with the output gear on the output shaft, connecting rod is housed on output shaft.
Wherein safety tongs is made up of backing block, eccentric wheel and transmission device, backing block and eccentric wheel are installed on the pincers holder assembly frame by screw rod, neutral gear between them, be the guide rail installation site, upper and lower two push rods are connected the upper and lower disc of eccentric wheel with pivoted arm two end elasticity, form four-bar linkage, rotating shaft of pivoted arm center fixation makes safety tongs be connected with connecting rod on the velocity limiter output shaft by this rotating shaft.When the elevator overspeed operation, centrifugal wheel separates with centrifugal, right side tooth embedding is because of elastic force effect and left side tooth embedding engagement, drive input, output gear engagement and output shaft is rotated, the upper and lower motion of drivening rod, the left and right bilateral deflection of eccentric wheel on the control safety tongs is made locking action with backing block to guide rail, reaches the purpose of elevator brake.The present invention compared with prior art, structure is very simple, saved top layer machine room space, be very suitable for the design of current machine-roomless lift and select for use, next has saved from the room, top to pit back and forth two steel ropes and tension wheel, has reduced productive costs, and installation is oversimplified, concerning the used rope shape velocity limiter of the present invention, saved steel cable and top layer machine room space, it is more flexible than wedge shape velocity limiter that degree of freedom is installed.
Description of drawings
Fig. 1 is the structural representation of this practical speed-limiting safety jaw.
Fig. 2 is a velocity limiter structural representation among Fig. 1.
Fig. 3 is a rope shaped centrifugal wheel structural representation among Fig. 2.
Fig. 4 is a wedge shape centrifugal wheel structural representation among Fig. 2.
Fig. 5 is the centrifugal wheel assembling scheme drawing of Fig. 3, Fig. 4.
Fig. 6 is the scheme of installation of rope shape velocity limiter.
Fig. 7 is the scheme of installation of wedge shape velocity limiter.
The specific embodiment
By shown in Figure 1, this speed-limiting safety jaw is in aggregates by combination by velocity limiter and safety tongs two large divisions, with being loaded on the car bottom.
By shown in Figure 2, in the housing of velocity limiter, the transmission device that centrifugal wheel 2, centrifugal 3, left and right tooth embedding 4,6 is housed and forms by gear cluster, output shaft 11, connecting rod 13.Left side tooth embedding 4 and centrifugal wheel 2 wheel shaft close fits, centrifugal wheel is cylindrical, and its race rectangular (as shown in Figure 4) is the wedge shape centrifugal wheel, and the velocity limiter of composition claims the wedge shape velocity limiter, and it cooperates with guide rail, is used for obtaining pure rolling friction power from guide rail.Its race semicircular in shape (as shown in Figure 3) is a rope shaped centrifugal wheel, the velocity limiter of the composition shape velocity limiter that claims to restrict, and it cooperates with steel rope, is used for obtaining pure rolling friction power from steel rope.Be contained in for centrifugal 3 in the centrifugal wheel 2, with the centrifugal wheel free-running fit, with left side tooth embedding 4 running-fits.Centrifugal is the semicircle piece of two separation, and it is connected with the wheel shaft elasticity of centrifugal wheel by thru-bolt 25.Centrifugal wheel wheel shaft bottom is set with right side tooth embedding 6, and it is corresponding with left side tooth embedding, and the plate washer 5 that 8, two centrifugal bottoms of engage spring are housed between the axle sleeve inner ring of its top shoulder and wheel shaft bottom separates left and right tooth embedding.The input gear 10 of velocity limiter transmission device be sleeved on right side tooth embedding stationary sleeve 7 on, and close fit with it, it moves and rotates synchronously with right side tooth embedding, when elevator overspeed moves, centrifugal drives plate washer and separates, right side tooth is embedded under the elastic force effect of engage spring 8, meshes with left side tooth embedding.The connecting rod 13 that is contained in output shaft 11 1 ends is connected with the transmission device of safety tongs.
As shown in Figure 7, fixed mandril 26 on the housing of wedge shape velocity limiter, between push rod and velocity limiter chassis compression spring 27 are housed, because elastic force effect, make 28 rotations around the shaft of whole housing, thereby drive wedge shape centrifugal wheel and guide rail engagement, because friction force rotates the wedge shape centrifugal wheel.This wedge shape velocity limiter is loaded on the car bottom.
As shown in Figure 6, to bend wheel parallel to each other 29, make the certain cornerite of formation between steel rope and the centrifugal wheel,, guarantee that centrifugal wheel produces pure rolling to increase friction force in each installation shaft of upper and lower of rope shaped centrifugal wheel.This rope shape velocity limiter is installed on the car bottom.
As shown in Figure 1, be installed in after backing block 19 in the safety tongs and upper and lower two screw rod 21 sockets of belleville spring 20 usefulness on one side of pincers holder assembly frame 24, eccentric wheel is contained in the another side of pincers holder assembly frame, and the spatial separation between them is the installation site of hoistway guide rail.Being equipped with on the pincers holder assembly of eccentric wheel 18, backing block 19 has two through holes, by this through hole it is installed on the punching axle 22 of casing, sliding joining.End at pincers holder assembly 24 is equipped with fixing screw 23, and the other end that is set a spring 17 on punching axle 22 makes adjust the clearance that backing block 19, eccentric wheel 2 and guide rail match to desirable position.One end of upper and lower two push rods 16 is rotaryed connection with the upper and lower disc of eccentric wheel, behind the cover upper spring, its other end is connected with upper and lower two ends of pivoted arm 14, form four-bar linkage, rotating shaft 15 of the center fixation of pivoted arm, rotating shaft is rotated, and drives pivoted arm and turns left and right, and makes that eccentric wheel is suitable, conter clockwise deflection.Rotating shaft 15 and the connecting rod on the velocity limiter output shaft 13 on the safety tongs flexibly connect.
During the upper and lower operation of elevator, centrifugal wheel (wedge shape or rope shape) is made cw thereupon or is rotated counterclockwise.When elevator overspeed moves, the rotation of centrifugal wheel hypervelocity, centrifugal is disconnected from each other because of action of centrifugal force, and baffle plate also separates thereupon, under the effect of engage spring, makes the engagement of right side tooth embedding upward movement and left side abaculus, and rotation together.Meanwhile, input gear upwards meshes with output gear, and rotate together, the drive output shaft rotates, thereby make the upper and lower motion of connecting rod, the rotating shaft that connecting rod drives on the safety tongs is rotated, and pivoted arm is rotated to the left or to the right, spur upper and lower push rod make eccentric wheel just, conter clockwise deflection, jointly guide rail is clamped with backing block.
Electromagnetism Bringing-back mechanism 9 open in usual is housed on this speed-limiting safety jaw, and under the energising situation, the electromagnet action throws off left and right tooth embedding by magnetic clutch, and eccentric wheel automatically resets under the effect of spring.
Claims (8)
1, a kind of speed-limiting safety jaw, it comprises velocity limiter and safety tongs two large divisions, it is characterized in that described velocity limiter and safety tongs are combined into an integral structure, and be installed in bottom the car or the car both sides, wherein velocity limiter comprises centrifugal wheel, centrifugal, a left side, right side tooth embedding reaches by spring, the transmission device that gear and connecting rod are formed, left side tooth embedding and centrifugal wheel wheel shaft close fit, centrifugal is sleeved in the centrifugal wheel, with left side tooth embedding running-fit, with the centrifugal wheel free-running fit, in centrifugal wheel wheel shaft bottom right side tooth embedding is housed, engage spring is housed below it, plate washer is equipped with in centrifugal bottom, and it is a left side, right side tooth embedding is separated mutually, mutually quiet the closing of sleeve that the input gear in the transmission device and right side tooth embedding fix, it can intermesh with the output gear that is contained on the output shaft, connecting rod is housed on output shaft, links to each other with the transmission device of safety tongs, and power is passed to eccentric wheel on the safety tongs by this connecting rod.
2, speed-limiting safety jaw according to claim 1 is characterized in that centrifugal in the described velocity limiter is that two semicircle pieces disconnected from each other are formed, and it is connected by the center shaft elasticity of double end stud with centrifugal.
3, according to claim 1,2 described speed-limiting safety jaws, it is characterized in that described centrifugal wheel has the branch of wedge shape centrifugal wheel and rope shaped centrifugal wheel, the race of wedge shape centrifugal wheel is rectangular, it and cage guide tight engagement, the race semicircular in shape of rope shaped centrifugal wheel, it cooperates with steel rope.
4, speed-limiting safety jaw according to claim 1, it is characterized in that described safety tongs is made up of backing block, eccentric wheel and transmission device that eccentric wheel is rotated, backing block is installed on the pincers holder assembly frame by upper and lower two screw rods, and eccentric wheel is contained on the pincers mounting and is installed on the chassis sidewall relative with backing block by upper and lower two screw rods.
5, speed-limiting safety jaw according to claim 4 is characterized in that between described two upper and lower screw rods that link to each other with backing block contiguous block being housed, and between pincers mounting and contiguous block set screw is housed, to regulate the spacing between backing block and guide rail or steel rope.
6, speed-limiting safety jaw according to claim 4 is characterized in that described and two screw jackets of eccentric wheel bonded assembly are equipped with retainer spring, and locating dowel pin is equipped with in the end of screw rod, to adjust the spacing between eccentric wheel and guide rail or steel rope.
7, according to claim 4,5,6 described speed-limiting safety jaws, the transmission device that it is characterized in that described safety tongs comprises push rod, spring, pivoted arm and rotating shaft, one end of upper and lower two push rods is connected with the upper and lower periphery of eccentric wheel, be connected with two end elasticity of pivoted arm behind the other end pocketed springs, the center of pivoted arm is contained in the rotating shaft, and fixes with rotating shaft.
8, speed-limiting safety jaw according to claim 7 is characterized in that on the described safety tongs driving the left and right accentric rotating shaft of eccentric wheel and is connected with connecting rod on the speed limit output shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021365385A CN1182017C (en) | 2002-08-14 | 2002-08-14 | Speed-limiting safety jaw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021365385A CN1182017C (en) | 2002-08-14 | 2002-08-14 | Speed-limiting safety jaw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1397480A true CN1397480A (en) | 2003-02-19 |
| CN1182017C CN1182017C (en) | 2004-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021365385A Expired - Fee Related CN1182017C (en) | 2002-08-14 | 2002-08-14 | Speed-limiting safety jaw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1182017C (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406369C (en) * | 2006-03-09 | 2008-07-30 | 武汉市黄陂新隆建筑机械有限公司 | Wheeled orbital super-speed clutch and its auxiliary friction braking safety device |
| CN101041405B (en) * | 2006-03-20 | 2010-11-03 | 株式会社日立制作所 | Elevator safety device and elevator possessing the safety device |
| CN102275793A (en) * | 2011-08-16 | 2011-12-14 | 湖南海诺电梯有限公司 | Elevator protective device |
| CN102514997A (en) * | 2011-12-08 | 2012-06-27 | 安徽丰海起重设备制造有限公司 | Fall-protection safety device of lifter |
| CN104192669A (en) * | 2014-08-22 | 2014-12-10 | 张龙俊 | Elevator anti-falling device |
| CN105431368A (en) * | 2013-06-07 | 2016-03-23 | 奥的斯电梯公司 | Hoistway-Efficient Elevator with low overhead and low pit |
| 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 |
| CN107298358A (en) * | 2017-08-11 | 2017-10-27 | 河北东方富达机械有限公司 | anti-falling safety device |
-
2002
- 2002-08-14 CN CNB021365385A patent/CN1182017C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406369C (en) * | 2006-03-09 | 2008-07-30 | 武汉市黄陂新隆建筑机械有限公司 | Wheeled orbital super-speed clutch and its auxiliary friction braking safety device |
| CN101041405B (en) * | 2006-03-20 | 2010-11-03 | 株式会社日立制作所 | Elevator safety device and elevator possessing the safety device |
| CN102275793A (en) * | 2011-08-16 | 2011-12-14 | 湖南海诺电梯有限公司 | Elevator protective device |
| CN102514997A (en) * | 2011-12-08 | 2012-06-27 | 安徽丰海起重设备制造有限公司 | Fall-protection safety device of lifter |
| CN105431368A (en) * | 2013-06-07 | 2016-03-23 | 奥的斯电梯公司 | Hoistway-Efficient Elevator with low overhead and low pit |
| CN104192669A (en) * | 2014-08-22 | 2014-12-10 | 张龙俊 | Elevator anti-falling device |
| 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 |
| CN107298358A (en) * | 2017-08-11 | 2017-10-27 | 河北东方富达机械有限公司 | anti-falling safety device |
| CN107298358B (en) * | 2017-08-11 | 2024-06-11 | 河北东方富达机械有限公司 | Anti-falling safety device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1182017C (en) | 2004-12-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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 city of Ningbo province Yinzhou District east Wu concentric Road No. Patentee after: Ningbo Hongda Elevator Co., Ltd. Address before: Zhejiang Yinxian Soochow town Patentee before: Ningbo Xinda Elevator Fitting Works |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041229 Termination date: 20110814 |