CN102502373B - Bidirectional falling-prevention safety device for construction hoist - Google Patents
Bidirectional falling-prevention safety device for construction hoist Download PDFInfo
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- CN102502373B CN102502373B CN 201110342407 CN201110342407A CN102502373B CN 102502373 B CN102502373 B CN 102502373B CN 201110342407 CN201110342407 CN 201110342407 CN 201110342407 A CN201110342407 A CN 201110342407A CN 102502373 B CN102502373 B CN 102502373B
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- connecting rod
- descending
- trip mechanism
- bidirectional
- voussoir
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Abstract
The invention discloses a bidirectional falling-prevention safety device for a construction hoist. The device consists of bidirectional safety tongs, a bidirectional speed limiter, a descending tripping mechanism, a descending linkage mechanism, an ascending linkage mechanism and an ascending tripping mechanism, wherein the bidirectional speed limiter is connected with the descending tripping mechanism and the ascending tripping mechanism through a triggering steel wire rope; the ascending linkage mechanism is connected between the bidirectional safety tongs and the ascending tripping mechanism; and the descending linkage mechanism is connected between the bidirectional safety tongs and the descending tripping mechanism. According to the bidirectional falling-prevention safety device for the construction hoist, not only can the safety problems caused by the reasons that a cage falls and glides at a hypervelocity be solved, but also the potential safety hazard brought by the reason that the cage ascends at the hypervelocity under the no-load condition or counterpoises drop at an approximate free-fall velocity after a brake loses effectiveness to and the cage ascends at the same velocity can be eliminated.
Description
Technical field
The present invention relates to a kind of construction hoist falling-proof safety device, specifically is a kind of bidirectional anti-falling safety device that is used for building hoist.
Background technology
Each cage of the dual-purpose building hoist of people's goods should be provided with and have anti-dropping safety device anti-fall, the speed limit dual-use function concurrently.Existing anti-dropping safety device is generally non-return finger, and this device during descending or suspension gear fracture, can and keep quiescence in cage hypervelocity with the cage stop.But this device can not solve the cage potential safety hazard to be brought when up with identical speed near free-fall velocity tenesmus cage of counterweight behind up or the misfunctioning of brake that exceeds the speed limit under no-load condition.
Summary of the invention
The object of the present invention is to provide a kind of bidirectional anti-falling safety device that is used for building hoist, this bidirectional anti-falling safety device can solve the safety problem of falling and exceeding the speed limit and gliding and to cause because of cage, can solve the cage potential safety hazard that counterweight behind up or the misfunctioning of brake brought when up with identical speed with the cage that drops near free-fall velocity that exceed the speed limit under no-load condition again.
For achieving the above object, the solution that the present invention adopts is: this bidirectional anti-falling safety device comprises velocity limiter, safety tongs, trip mechanism and link gear,
Described safety tongs is a bidirectional safety tongs, its upper and lower symmetrical configuration, top or bottom section comprise leaf spring, T type ring, guide plate, orienting lug, voussoir, the voussoir backing plate, the needle bearing plate, guide bolt, the axis of guide, mount pad, disk spring and protective cover, T type ring wherein, disk spring, leaf spring and orienting lug are fixed on the mount pad by guide bolt successively, the voussoir backing plate is connected the voussoir back side, in the one end inserted wedge and the groove between the voussoir backing plate of guide plate, the other end is by being bolted on the orienting lug, and the needle bearing plate is between voussoir backing plate and orienting lug;
Described trip mechanism comprises up trip mechanism and descending trip mechanism, and up trip mechanism and descending trip mechanism are formed by link plate, angle steel and guard shield, and wherein guard shield is connected with cage by bolt, and angle steel is connected on the guard shield, and link plate is connected with angle steel;
Described velocity limiter is a bidirectional speed limiter, and its upper and lower two are triggered steel rope and are connected with the link plate of up trip mechanism and descending trip mechanism respectively;
Described link gear comprises up link gear and descending link gear, up link gear comprises left and right two-part structure, connect by connecting rod between the two-part structure, left and right two-part structure mainly is made of connecting rod body and spring, wherein two of connecting rod body external parts are connected with the voussoir of safety tongs by bearing pin, one end of spring is connected on the connecting rod body, and the other end is connected on the mount pad of safety tongs, and connecting rod is not hung on the link plate of trip mechanism when triggering; Descending link gear also comprises a left side, right two-part structure, connect by long connecting rod between the two-part structure, a left side, right two-part structure is mainly by big connecting rod, small rod, axle and shift fork are formed, its axis is installed on the square tube of cage by bearing seat, one end of big connecting rod and small rod is connected with axle by holding screw, the two ends of long connecting rod and a left side, the other end of right small rod connects, one end of shift fork is fixed on the axle, the other end is connected with the voussoir pull bar, one end of left side big connecting rod is connected with spring, and the right big connecting rod is not connected with the link plate of descending trip mechanism by the weight axle of installing on it when triggering.
Principle of work of the present invention is: when cage hypervelocity behind the up or misfunctioning of brake counterweight with near free-fall velocity tenesmus cage with identical speed when up, the triggering steel rope of going up of bidirectional speed limiter spurs up trip mechanism action, and connecting rod in the up link gear and the link plate in the up trip mechanism are broken away from, the up voussoir in this moment bidirectional safety tongs moves under the spring tension effect of up link gear to be held guide rail tightly and makes the cage stop.Otherwise, when descending or cage falls when cage hypervelocity, the following triggering steel rope of bidirectional speed limiter spurs descending trip mechanism action, and weight axle in the descending link gear and the link plate in the descending trip mechanism are broken away from, the descending voussoir in this moment bidirectional safety tongs moves down under the spring tension effect of descending link gear to be held guide rail tightly and makes the cage stop.
The present invention can solve the safety problem of falling and exceeding the speed limit and gliding and to cause because of cage, can solve the cage potential safety hazard that counterweight behind up or the misfunctioning of brake brought when up with identical speed with the cage that drops near free-fall velocity that exceed the speed limit under no-load condition again.
Description of drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a right elevation of the present invention.
Fig. 3 is the front view (removing protective cover) of bidirectional safety tongs.
Fig. 4 is the birds-eye view of bidirectional safety tongs.
Fig. 5 is the enlarged drawing at A place among Fig. 3.
Fig. 6 is the front view of up trip mechanism.
Fig. 7 is the right elevation of up trip mechanism.
Fig. 8 is the front view of descending trip mechanism.
Fig. 9 is the right elevation of descending trip mechanism.
Figure 10 is the front view of up link gear (up trip mechanism, bidirectional safety tongs have drawn among the figure).
Figure 11 is the left view of up link gear (up trip mechanism, bidirectional safety tongs have drawn among the figure).
Figure 12 is the birds-eye view of up link gear (bidirectional safety tongs has drawn among the figure).
Figure 13 is the front view of descending link gear.
Figure 14 is the left view of descending link gear.
Figure 15 is the birds-eye view of descending link gear.
The specific embodiment
As shown in Figure 1 and Figure 2, the present invention is made up of bidirectional safety tongs 1, bidirectional speed limiter 2, descending trip mechanism 3, descending link gear 4, up link gear 5 and up trip mechanism 6, wherein bidirectional speed limiter 2 is connected with up trip mechanism 6 with descending trip mechanism 3 by triggering steel rope, up link gear 5 is connected between bidirectional safety tongs 1 and the up trip mechanism 6, and descending link gear 4 is connected between bidirectional safety tongs 1 and the descending trip mechanism 3.
The structure of bidirectional safety tongs 1 such as Fig. 3, Fig. 4, shown in Figure 5, upper and lower structure by symmetry is formed, top or bottom section comprise leaf spring 101, T type ring 102, guide plate 103, orienting lug 104, voussoir 105, voussoir backing plate 106, needle bearing plate 107, guide bolt 108, the axis of guide 109, mount pad 110, disk spring 111 and protective cover 112, T type ring 102 wherein, disk spring 111, leaf spring 101 and orienting lug 103 are fixed on the mount pad 110 successively by guide bolt 108, voussoir backing plate 106 is connected voussoir 105 back sides, in the one end inserted wedge 105 and the groove between the voussoir backing plate 106 of guide plate 103, the other end is by being bolted on the orienting lug 104, for voussoir 105 can be slided flexibly, between voussoir backing plate 106 and orienting lug 104, also be provided with needle bearing plate 107 on orienting lug 104.
Up trip mechanism 6 is installed in the cage, and its structure such as Fig. 6, shown in Figure 7 are made up of link plate 601, angle steel 602 and guard shield, and wherein in cage, angle steel 602 is connected on the guard shield guard shield by bolt, and link plate 601 is connected with angle steel 602.
Descending trip mechanism 3 is installed on the cage top, its structure such as Fig. 8, shown in Figure 9 are made up of link plate 302, angle steel 301 and guard shield 303, wherein guard shield 303 by bolt in the cage top, angle steel 301 is connected on the guard shield 303, and link plate 302 is connected with angle steel 301.
The triggering steel rope of going up of bidirectional speed limiter 2 is connected with the link plate 601 of up trip mechanism 6, and following triggering steel rope is connected with the link plate 302 of descending trip mechanism 3.
The structure of up link gear 5 such as Figure 10, Figure 11, shown in Figure 12, comprise left and right two-part structure, connect by connecting rod 502 between the two-part structure, left and right two-part structure mainly is made of connecting rod body 501 and spring 503, wherein two of connecting rod body 501 external parts are connected with the voussoir 105 of bidirectional safety tongs 1 by bearing pin 504, one end of spring 503 is connected on the connecting rod body 501, the other end is connected on the mount pad 110 of bidirectional safety tongs 1, and connecting rod 502 is not hung on the link plate 601 of up trip mechanism 6 when triggering.
The structure of descending link gear 4 such as Figure 13, Figure 14, shown in Figure 15, comprise a left side, right two-part structure, connect by long connecting rod 405 between the two-part structure, a left side, right two-part structure is mainly by axle 401, big connecting rod 402, small rod 403 and shift fork 404 are formed, its axis 401 is installed on the square tube of cage by bearing seat, one end of big connecting rod 402 and small rod 403 is connected with axle 401 by holding screw, the two ends of long connecting rod 405 and a left side, the other end of right small rod 403 connects, one end of shift fork 404 is fixed on the axle 401, the other end is connected with the voussoir pull bar, one end of left side big connecting rod 402 is connected with spring 406, and the right big connecting rod is connected with the link plate 302 of descending trip mechanism 3 by the weight axle of installing on it 407 at trigger-type not.
Claims (1)
1. a bidirectional anti-falling safety device that is used for building hoist comprises velocity limiter, safety tongs, trip mechanism and link gear, it is characterized in that:
A. safety tongs is a bidirectional safety tongs, its upper and lower symmetrical configuration, top or bottom section comprise leaf spring, T type ring, guide plate, orienting lug, voussoir, the voussoir backing plate, the needle bearing plate, guide bolt, the axis of guide, mount pad, disk spring and protective cover, T type ring wherein, disk spring, leaf spring and orienting lug are fixed on the mount pad by guide bolt successively, the voussoir backing plate is connected the voussoir back side, in the one end inserted wedge and the groove between the voussoir backing plate of guide plate, the other end is by being bolted on the orienting lug, and the needle bearing plate is between voussoir backing plate and orienting lug;
B. trip mechanism comprises up trip mechanism and descending trip mechanism, and up trip mechanism and descending trip mechanism are formed by link plate, angle steel and guard shield, and wherein guard shield is connected with cage by bolt, and angle steel is connected on the guard shield, and link plate is connected with angle steel;
C. velocity limiter is a bidirectional speed limiter, and its upper and lower two are triggered steel rope and are connected with the link plate of up trip mechanism and descending trip mechanism respectively;
D. link gear comprises up link gear and descending link gear, up link gear comprises left and right two-part structure, connect by connecting rod between the two-part structure, left and right two-part structure mainly is made of connecting rod body and spring, wherein two of connecting rod body external parts are connected with the voussoir of safety tongs by bearing pin, one end of spring is connected on the connecting rod body, and the other end is connected on the mount pad of safety tongs, and connecting rod is not hung on the link plate of trip mechanism when triggering; Descending link gear also comprises a left side, right two-part structure, connect by long connecting rod between the two-part structure, a left side, right two-part structure is mainly by big connecting rod, small rod, axle and shift fork are formed, its axis is installed on the square tube of cage by bearing seat, one end of big connecting rod and small rod is connected with axle by holding screw, the two ends of long connecting rod and a left side, the other end of right small rod connects, one end of shift fork is fixed on the axle, the other end is connected with the voussoir pull bar, one end of left side big connecting rod is connected with spring, and the right big connecting rod is not connected with the link plate of descending trip mechanism by the weight axle of installing on it when triggering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110342407 CN102502373B (en) | 2011-11-03 | 2011-11-03 | Bidirectional falling-prevention safety device for construction hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110342407 CN102502373B (en) | 2011-11-03 | 2011-11-03 | Bidirectional falling-prevention safety device for construction hoist |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102502373A CN102502373A (en) | 2012-06-20 |
| CN102502373B true CN102502373B (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110342407 Expired - Fee Related CN102502373B (en) | 2011-11-03 | 2011-11-03 | Bidirectional falling-prevention safety device for construction hoist |
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| CN (1) | CN102502373B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103663038B (en) * | 2013-12-17 | 2016-03-23 | 河北东方富达机械有限公司 | Bidirectional braking device |
| CN107445015B (en) * | 2017-08-24 | 2023-03-24 | 佛山市昌宏电梯机械有限公司 | Elevator anti-falling, overspeed and accidental movement protection system |
| CN108996355A (en) * | 2018-09-10 | 2018-12-14 | 镇江朝阳机电科技有限公司 | A kind of two-way lifting safety tongs easy to use |
| CN113057015B (en) * | 2021-03-23 | 2022-02-11 | 中国水产科学研究院渔业机械仪器研究所 | Breed raft frame lifting rope trip gear |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1319551A (en) * | 2000-04-14 | 2001-10-31 | 中国建筑科学研究院建筑机械化研究分院 | Bidirectional safety tongs for elevator |
| CN1824599A (en) * | 2005-02-22 | 2006-08-30 | 陈汉昌 | Bidirection overspeed protective device of elevator |
| CN102120539A (en) * | 2010-12-30 | 2011-07-13 | 沈阳博林特电梯股份有限公司 | Electromagnetic wedge-shaped bidirectional rope gripper |
| CN202321860U (en) * | 2011-11-03 | 2012-07-11 | 四川省建元升降机制造有限公司 | Bidirectional anti-falling safety device for construction elevator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0787676A1 (en) * | 1996-01-31 | 1997-08-06 | Inventio Ag | Safety device |
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2011
- 2011-11-03 CN CN 201110342407 patent/CN102502373B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1319551A (en) * | 2000-04-14 | 2001-10-31 | 中国建筑科学研究院建筑机械化研究分院 | Bidirectional safety tongs for elevator |
| CN1824599A (en) * | 2005-02-22 | 2006-08-30 | 陈汉昌 | Bidirection overspeed protective device of elevator |
| CN102120539A (en) * | 2010-12-30 | 2011-07-13 | 沈阳博林特电梯股份有限公司 | Electromagnetic wedge-shaped bidirectional rope gripper |
| CN202321860U (en) * | 2011-11-03 | 2012-07-11 | 四川省建元升降机制造有限公司 | Bidirectional anti-falling safety device for construction elevator |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平9-208151A 1997.08.12 |
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| CN102502373A (en) | 2012-06-20 |
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