CN2711118Y - Two-direction safety tongs - Google Patents

Two-direction safety tongs Download PDF

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Publication number
CN2711118Y
CN2711118Y CN 200420066489 CN200420066489U CN2711118Y CN 2711118 Y CN2711118 Y CN 2711118Y CN 200420066489 CN200420066489 CN 200420066489 CN 200420066489 U CN200420066489 U CN 200420066489U CN 2711118 Y CN2711118 Y CN 2711118Y
Authority
CN
China
Prior art keywords
guide
voussoir
needle roller
slipper
track groove
Prior art date
Application number
CN 200420066489
Other languages
Chinese (zh)
Inventor
贾砚华
樊挨在
王秀华
Original Assignee
河北东方机械厂
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 河北东方机械厂 filed Critical 河北东方机械厂
Priority to CN 200420066489 priority Critical patent/CN2711118Y/en
Application granted granted Critical
Publication of CN2711118Y publication Critical patent/CN2711118Y/en

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Abstract

The utility model provides a two-direction safety tong, comprising a tong body, a movable wedge, a fixed wedge, a lifting rod component and a guide plate. One end of the inner part of a rail groove is provided with a braking plate; the slant face of the fixed wedge facing to the rail groove is in '< ' shape which is high in the middle part and low on the two ends. The lifting rod component is provided with a ' >' shape lifting groove, and the guide plate is provided with a '< ' shape long slotted hole. The movable wedge comprises an upper movable wedge and a lower movable wedge. The end faces of an upper needle roller component and a lower needle roller component back against the rail groove are respectively pressed against the slant face of the fixed wedge. The outer end faces of the upper and the lower movable wedges are respectively provided with an elastic column pin. The middle parts of the two elastic column pin are respectively matched with the ' >' shape lifting groove on the lifting rod component. The upper parts of the two elastic column pin are respectively matched with the '< ' shape long slotted hole on the guide plate. The utility model aims at providing a two-direction safety tong which can create mechanical movement in order to make an overspeed elevator stop and keep in stationary state on a rail when the elevator goes upwardly or downwardly with a speed exceeding the rated speed.

Description

Bidirectional safety tongs
Technical field
The utility model relates to a kind of safety device, on lift car, when ascending for elevator and descending when surpassing command speed, can send electric signal, make the elevator traction tester in power-down state, and can produce mechanical action, make overspeed elevator stopping on cage guide and keep the bidirectional safety tongs of quiescence.
Background technology
The safety tongs device of existing domestic and international production is made up of main parts size such as caliper, roll wheel assembly, voussoir, single cover steering units mostly, when elevator moves above command speed downwards, the power that lifts that velocity limiter produces drives the safety tongs device action that is installed on the car, and makes the elevator traction tester in power-down state by the action of snap switch.Therefore, existing safety tongs device can only play the safety guard-safeguard effect to downward overspeed elevator, and the overspeed elevator that makes progress is not had the safety guard-safeguard effect, has stayed potential safety hazard for thus the operation of elevator.
The utility model content
When the purpose of this utility model provides a kind of elevator surpass command speed on descending and up both direction, all can produce mechanical action, make overspeed elevator stopping on guide rail and keep the bidirectional safety tongs of quiescence.
Bidirectional safety tongs of the present utility model, comprise caliper, the middle part of caliper vertically is provided with guide-track groove, side in each guide-track groove is provided with movable voussoir, needle roller parts, fixedly voussoir, lifting rod parts and guide plate, guide plate is fixed on the described caliper, opposite side in the described guide-track groove is provided with slipper, and slipper is installed on the caliper by at least one the screw thread hinge that is set with several disk springs, and described fixedly voussoir is that middle height, two ends are low towards the inclined-plane of guide-track groove Shape, described lifting rod parts are provided with Shape lift groove, described guide plate is provided with The long slot bore of shape, described movable voussoir comprise lay respectively in the guide-track groove on, the last movable voussoir at following two ends and following movable voussoir, described needle roller parts comprise needle roller parts and following needle roller parts, the described inclined-plane of movable voussoir and described movable voussoir down pastes towards the end face of guide-track groove mutually with last needle roller parts and following needle roller parts respectively, the top of going up movable voussoir links to each other with the top bent plate of guide plate by extension spring, last needle roller parts link to each other with the top bent plate of guide plate by spring, following needle roller parts link to each other with the bottom of guide plate by spring, last needle roller parts and following needle roller the parts end face of guide-track groove dorsad paste mutually with the fixing inclined-plane of voussoir respectively, described top and the described bottom of movable voussoir down of movable voussoir pushed up adjustable bolt respectively, go up movable voussoir and down the outer face of movable voussoir be respectively equipped with a spring column pin, the middle part of two spring column pins respectively with described lifting rod parts on The groove that lifts of shape matches, the top of two spring column pins respectively with described guide plate on The long slot bore of shape matches.
Bidirectional safety tongs of the present utility model, the below that is positioned at described slipper one side in the wherein said guide-track groove is provided with slipper, the slipper end face of guide-track groove dorsad is an inclined-plane, the inclined-plane of slipper pastes mutually with the inclined-plane of voussoir towards guide-track groove, voussoir is installed on the described caliper by the threaded shaft that is set with several disk springs, be respectively equipped with at the outer face of slipper, following two spring column pins, two spring column pins match with a elongated slot on the guiding bent plate respectively, the guiding bent plate is fixed on the described caliper, the bottom of described slipper is equipped with the elastic guide pin, is set with retracing spring on the elastic guide pin.
Bidirectional safety tongs of the present utility model, wherein said screw thread hinge is 2, is set with 16 disk springs on each screw thread hinge, described threaded sleeve is equipped with 16 disk springs.
The advantage of bidirectional safety tongs of the present utility model is: because of its fixedly the inclined-plane of voussoir be intermediate projections, recessed inclined-plane, two ends, the long slot bore that lifts groove and guide plate on the lifting rod parts matches with the upper and lower inclined-plane of voussoir respectively.Historical facts or anecdotes has elevator when surpassing command speed on descending or up both direction with later-model bidirectional safety tongs, all can produce mechanical action, makes overspeed elevator stopping on guide rail and keep the characteristics of quiescence.In addition, because of adopting the retracing spring jacking in the bottom of slipper, when elevator is braked in up process, slipper is subjected to the friction force effect of guide rail and glides, thereby can reduce the braking force effect of the utility model bidirectional safety tongs, so bidirectional safety tongs of the present utility model carries out glancing impact to elevator in uplink and downlink, the gripping power difference of generation.
Below in conjunction with accompanying drawing bidirectional safety tongs of the present utility model is described in further detail.
Description of drawings
Fig. 1 is the front view of the structural representation of bidirectional safety tongs of the present utility model;
Fig. 2 has removed the front view of the structural representation of guide plate for bidirectional safety tongs of the present utility model;
Fig. 3 is the birds-eye view of Fig. 1;
Fig. 4 is the C-C cross section view of Fig. 1;
Fig. 5 is the D-D cross section view of Fig. 1.
The specific embodiment
By Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5 are as can be seen, bidirectional safety tongs of the present utility model, comprise caliper 1, the middle part of caliper 1 vertically is provided with guide-track groove 27, side in each guide-track groove 27 is provided with movable voussoir, the needle roller parts, fixedly voussoir 14, lifting rod parts 8 and guide plate 11, guide plate 11 adopts and is bolted on the caliper 1, opposite side in the guide-track groove 27 is provided with slipper 2, slipper 2 is installed on the caliper 1 by two screw thread hinges 21 that are respectively installed with 16 disk springs 3, and fixedly voussoir 14 is middle high towards the inclined-plane of guide-track groove 27, two ends are low Shape is provided with on lifting rod parts 8 Shape lift groove 801, on guide plate 11, be provided with The long slot bore 111 of shape.
Movable voussoir comprises last movable voussoir 15 and the following movable voussoir 12 that lays respectively at upper/lower terminal in the guide-track groove 27, the needle roller parts comprise needle roller parts 25 and following needle roller parts 13, last needle roller parts 25 and following needle roller parts 13 are same part, the inclined-plane of going up movable voussoir 15 and following movable voussoir 12 pastes towards the end face of guide-track groove 27 mutually with last needle roller parts 25 and following needle roller parts 13 respectively, can reduce the friction drag when going up movable voussoir 15 and movable voussoir 12 sliding up and down down like this.Top at last movable voussoir 15 links to each other with the top bent plate of guide plate 11 by extension spring 16, extension spring 16 can reset going up movable voussoir 15, last needle roller parts 25 link to each other with the top bent plate of guide plate 11 by spring 26, spring 26 can reset going up needle roller parts 25, following needle roller parts 13 link to each other with the bottom of guide plate 11 by spring 9, and spring 9 can will descend needle roller parts 13 to reset.Last needle roller parts 25 and following needle roller parts 13 end face of guide-track groove 27 dorsad paste mutually with the fixing inclined-plane of voussoir 14 respectively, go up the top of movable voussoir 15 and the bottom of following movable voussoir 12 and pushed up adjustable bolt 17 respectively, go up movable voussoir 15 and down the outer face of movable voussoir 12 be respectively equipped with 23,18, two spring column pins 23,18 of a spring column pin the middle part respectively with lifting rod parts 8 on The groove 801 that lifts of shape matches, the top of two spring column pins 23,18 respectively with guide plate 11 on The long slot bore 111 of shape matches.
In guide-track groove 27, be positioned at slipper 2 one sides below be provided with slipper 5, slipper 5 end face of guide-track groove 27 dorsad is an inclined-plane, the inclined-plane of slipper 5 pastes mutually with the inclined-plane of voussoir 4 towards guide-track groove 27, voussoir 4 is installed on the caliper 1 by the threaded shaft 22 that is set with 16 disk springs 24, be respectively equipped with at the outer face of slipper 5, following two spring column pins 19, two spring column pins 19 match with a elongated slot 701 on the guiding bent plate 7 respectively, guiding bent plate 7 is fixed on the caliper 1, the bottom of described slipper 5 is equipped with elastic guide pin 10, be set with retracing spring 6 on the elastic guide pin 10, retracing spring 6 can reset slipper 5.
The working process of the utility model bidirectional safety tongs is, when elevator is descending when surpassing command speed, the velocity limiter action moves up the lifting rod parts 8 of bidirectional safety tongs by steering unit, and when moving on the lifting rod parts 8, lifting rod parts 8 are provided with The bottom that lifts groove 801 of shape drives spring column pin 18 along moving on the long slot bore on the guide plate 11 111, spring column pin 18 drives down and moves on the movable voussoir 12, going up movable voussoir 15 and keep motionless under the restriction of adjustable bolt 17, then slides on spring column pin 23 in the top of the long slot bore 801 on the lifting rod parts 8.Distance between movable voussoir 12 and slipper 2, the slipper 5 diminishes so down, slipper 2, voussoir 4 move compression disk spring 24, make the descending elevator stopping of hypervelocity on guide rail 20 and keep quiescence thereby make slipper 2, slipper 5 and down movable voussoir 12 combineds action clamp guide rail 20.
When ascending for elevator surpassed command speed, the velocity limiter action moved down the lifting rod parts 8 in the bidirectional safety tongs by steering unit, and when lifting rod parts 8 moved down, lifting rod parts 8 were provided with The top that lifts groove 801 of shape drives spring column pin 23 and moves down along the long slot bore on the guide plate 11 111, spring column pin 23 drives upward, and movable voussoir 15 moves down, movable voussoir 12 keeps motionless under the restriction of adjustable bolt 17 down, then slides on spring column pin 18 in the bottom of the long slot bore 801 on the lifting rod parts 8.Like this, upward distance diminishes between movable voussoir 15 and the slipper 2, and slipper 2, voussoir 4 move compression disk spring 24.Meanwhile, slipper 5 is under the effect of guide rail 20 friction force, overcome the jacking effect of compression spring 6, driving two spring column pins 19 moves down along the long slot bore 701 on the guiding bent plate 7, thereby make slipper 2 and last movable voussoir 15 combineds action clamp guide rail 20, make the up elevator stopping of hypervelocity on guide rail 20 and keep quiescence.
Embodiment recited above is described preferred implementation of the present utility model; be not that design of the present utility model and scope are limited; do not breaking away under the utility model design concept prerequisite; common engineering staff make the technical solution of the utility model in this area various friendship types and improvement; all should fall into protection domain of the present utility model; the technology contents that the utility model is asked for protection all is documented in claims.

Claims (3)

1. bidirectional safety tongs, comprise caliper (1), the middle part of caliper (1) vertically is provided with guide-track groove (27), side in each guide-track groove (27) is provided with movable voussoir, the needle roller parts, fixing voussoir (14), lifting rod parts (8) and guide plate (11), guide plate (11) is fixed on the described caliper (1), opposite side in the described guide-track groove (27) is provided with slipper (2), slipper (2) is installed on the caliper (1) by at least one the screw thread hinge (21) that is set with several disk springs (3), it is characterized in that: described fixedly voussoir (14) is middle height towards the inclined-plane of guide-track groove (27), two ends are low<shape, described lifting rod parts (8) are provided with〉shape lift groove (801), described guide plate (11) is provided with<long slot bore (111) of shape, described movable voussoir comprise lay respectively in the guide-track groove (27) on, the last movable voussoir (15) at following two ends and following movable voussoir (12), described needle roller parts comprise needle roller parts (25) and following needle roller parts (13), the described movable voussoir (15) of pastes towards the end face of guide-track groove (27) with last needle roller parts (25) and following needle roller parts (13) respectively mutually with the described inclined-plane of movable voussoir (12) down, the top of going up movable voussoir (15) links to each other by the top bent plate of extension spring (16) with guide plate (11), last needle roller parts (25) link to each other with the top bent plate of guide plate (11) by spring (26), following needle roller parts (13) link to each other with the bottom of guide plate (11) by spring (9), last needle roller parts (25) and following needle roller parts (13) end face of guide-track groove (27) dorsad paste mutually with the fixing inclined-plane of voussoir (14) respectively, described top and the described bottom of movable voussoir (12) down of movable voussoir (15) pushed up adjustable bolt (17) respectively, the outer face of going up movable voussoir (15) and following movable voussoir (12) is respectively equipped with a spring column pin (23,18), two spring column pins (23,18) middle part respectively with described lifting rod parts (8) on the groove (801) that lifts of shape matches two spring column pins (23,18) top respectively with described guide plate (11) on<long slot bore (111) of shape matches.
2. bidirectional safety tongs according to claim 1, it is characterized in that: the below that is positioned at described slipper (2) one sides in the described guide-track groove (27) is provided with slipper (5), slipper (5) end face of guide-track groove (27) dorsad is an inclined-plane, the inclined-plane of slipper (5) pastes mutually with the inclined-plane of voussoir (4) towards guide-track groove (27), voussoir (4) is installed on the described caliper (1) by the threaded shaft (22) that is set with several disk springs (3), outer face at slipper (5) is respectively equipped with, following two spring column pins (19), two spring column pins (19) match with a elongated slot (701) on guiding bent plate (7) respectively, guiding bent plate (7) is fixed on the described caliper (1), the bottom of described slipper (5) is equipped with elastic guide pin (10), is set with retracing spring (6) on the elastic guide pin (10).
3. bidirectional safety tongs according to claim 2 is characterized in that: described screw thread hinge (21) is 2, is set with 16 disk springs (3) on each screw thread hinge (21), and described threaded shaft (22) is set with 16 disk springs (24).
CN 200420066489 2004-06-22 2004-06-22 Two-direction safety tongs CN2711118Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200420066489 CN2711118Y (en) 2004-06-22 2004-06-22 Two-direction safety tongs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200420066489 CN2711118Y (en) 2004-06-22 2004-06-22 Two-direction safety tongs

Publications (1)

Publication Number Publication Date
CN2711118Y true CN2711118Y (en) 2005-07-20

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Application Number Title Priority Date Filing Date
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Country Link
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103482448A (en) * 2013-09-18 2014-01-01 宁波赛富特电梯部件有限公司 Bilateral safe pliers
CN103492302A (en) * 2011-04-19 2014-01-01 奥的斯电梯公司 Elevator brake having a brake release feature
CN103663037A (en) * 2013-12-16 2014-03-26 河北东方富达机械有限公司 Two-way brake safety tongs
CN105016166A (en) * 2015-08-13 2015-11-04 卫小兵 Two-way safety gear used for preventing lift car from moving accidentally
CN105110132A (en) * 2015-09-14 2015-12-02 恒达富士电梯有限公司 Hydraulic bidirectional safety gear for elevator
RU2596635C1 (en) * 2015-07-31 2016-09-10 Публичное акционерное общество "Карачаровский механический завод" Elevator cabin catcher
CN106219351A (en) * 2016-08-30 2016-12-14 浙江西子富沃德电机有限公司 A kind of bidirectional safety tongs
CN106429707A (en) * 2016-11-22 2017-02-22 中山南区电梯工程研究院有限公司 Bidirectional safety tongs used in elevators and elevator device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103492302A (en) * 2011-04-19 2014-01-01 奥的斯电梯公司 Elevator brake having a brake release feature
US9321611B2 (en) 2011-04-19 2016-04-26 Otis Elevator Company Elevator brake having a brake release feature
CN103482448A (en) * 2013-09-18 2014-01-01 宁波赛富特电梯部件有限公司 Bilateral safe pliers
CN103663037A (en) * 2013-12-16 2014-03-26 河北东方富达机械有限公司 Two-way brake safety tongs
RU2596635C1 (en) * 2015-07-31 2016-09-10 Публичное акционерное общество "Карачаровский механический завод" Elevator cabin catcher
CN105016166A (en) * 2015-08-13 2015-11-04 卫小兵 Two-way safety gear used for preventing lift car from moving accidentally
CN105110132A (en) * 2015-09-14 2015-12-02 恒达富士电梯有限公司 Hydraulic bidirectional safety gear for elevator
CN106219351A (en) * 2016-08-30 2016-12-14 浙江西子富沃德电机有限公司 A kind of bidirectional safety tongs
CN106429707A (en) * 2016-11-22 2017-02-22 中山南区电梯工程研究院有限公司 Bidirectional safety tongs used in elevators and elevator device
CN106429707B (en) * 2016-11-22 2019-09-27 中山天达电梯科技有限公司 A kind of elevator bidirectional safety tongs and its lift appliance

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