CN105000491A - Elevator brake releasing device - Google Patents

Elevator brake releasing device Download PDF

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Publication number
CN105000491A
CN105000491A CN201510419529.1A CN201510419529A CN105000491A CN 105000491 A CN105000491 A CN 105000491A CN 201510419529 A CN201510419529 A CN 201510419529A CN 105000491 A CN105000491 A CN 105000491A
Authority
CN
China
Prior art keywords
brake
pull bar
tricing line
elevator
releasing
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.)
Granted
Application number
CN201510419529.1A
Other languages
Chinese (zh)
Other versions
CN105000491B (en
Inventor
黄涛
黄宗耀
唐电波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Elevator China Co Ltd
Original Assignee
Hitachi Elevator China Co Ltd
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 Hitachi Elevator China Co Ltd filed Critical Hitachi Elevator China Co Ltd
Priority to CN201510419529.1A priority Critical patent/CN105000491B/en
Publication of CN105000491A publication Critical patent/CN105000491A/en
Application granted granted Critical
Publication of CN105000491B publication Critical patent/CN105000491B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66DCAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/24Operating devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66BELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00Applications of checking, fault-correcting, or safety devices in elevators

Abstract

The invention relates to an elevator brake releasing device. The elevator brake releasing device comprises a first brake, a second brake, a first support and a second support, wherein the first brake and the second brake are symmetrically arranged on an elevator host. The elevator brake releasing device further comprises a control rope, an outside well releasing operating mechanism used for tensioning or releasing the control rope, a first pull rod and a second pull rod, wherein the first pull rod and the second pull rod are arranged in a crossed mode. One end of the first pull rod is rotationally connected with the first support, and a pulley is connected to the other end of the first pull rod. The first pull rod is provided with a movable groove. One end of the second pull rod is movably connected with the second support. The other end of the second pull rod penetrates through the movable groove and is connected with one end of the control rope. The other end of the control rope winds around the pulley to be connected with the outside well releasing operating mechanism. The first brake and the second brake are connected with the first pull rod and the second pull rod respectively. According to the elevator brake releasing device, releasing is carried out in a mechanical mode, the problem of failure of the releasing device due to electric failure can be solved, and safety and reliability are achieved. The first pull rod and the second pull rod are arranged in the crossed mode, the synchronism of releasing of the first brake and the second brake is high, and brake force is stable.

Description

Elevator brake brake-releasing gear
Technical field
The present invention relates to elevator to declutch technical field, particularly relate to a kind of elevator brake brake-releasing gear.
Background technology
At present, machine-roomless lift development is very swift and violent, along with the application of machine-roomless lift further genralrlization, machine-roomless lift product demand on market also increases day by day, but the particularity that the oppressive rescue of machine-roomless lift brings because of its constructional feature becomes a very important problem, existing machine-roomless elevator mainframe is arranged in hoistway, and people directly machine room elevator cannot to declutch to host service function as having, and needs to operate brake-releasing gear hoistway is outer.Current machine-roomless lift is generally operate electric switch outward at hoistway to declutch by electrical means, but elevator is often because of the problem that band-type brake coil and terminal row fault cause electric brake releasing to lose efficacy, and is easily out of order, cannot ensures the safety of personnel.
Summary of the invention
The object of the present invention is to provide a kind of elevator brake brake-releasing gear, the problem that brake-releasing gear lost efficacy because of electrical accident can be avoided, safe and reliable, and the synchronism that two drgs declutch is high.
For realizing object of the present invention, the technical scheme taked is:
A kind of elevator brake brake-releasing gear, comprise and be symmetricly set in the first drg on elevator main and second brake, first bearing and the second bearing, it also comprises tricing line, for the operating mechanism that declutches outside the well strained or loosen tricing line, first pull bar arranged in a crossed manner and the second pull bar, first pull bar one end and the first bearing are rotatably connected, the other end is connected with pulley, first pull bar is provided with loose slot, one end of second pull bar is flexibly connected with the second bearing, the other end is connected with one end of tricing line through loose slot, the other end of tricing line is walked around pulley and is connected with the operating mechanism that declutches outside well, first drg and second brake are connected respectively with in the middle part of the first pull bar He in the middle part of the second pull bar.
When elevator break down need declutch with elevator brake brake-releasing gear time, by the operating mechanism tension tricing line that declutches outside well, utilize tricing line interlock pulley, the first pull bar and the second pull bar is driven upwards to rotate around the first bearing and the second bearing respectively, upwards lift the first drg and second brake simultaneously, the brake shoe of the first drg and second brake and the brake wheel of main frame are thrown off, and reach the object declutched, lift car is movement smoothly under gravity; Unclamp the operating mechanism that to declutch outside well, tricing line is loosened, and the locking again of brake shoe and brake wheel, car can not move.Elevator brake brake-releasing gear adopts mechanical system to declutch, and can avoid the problem that brake-releasing gear lost efficacy because of electrical accident, safe and reliable.And the first pull bar and the second pull bar arranged in a crossed manner, after tension tricing line, the first pull bar and the second pull bar can be driven upwards to rotate, and the synchronism that the first drg and second brake declutch is high simultaneously, and braking force is stablized, and requirements of installation space is little.
Below technical scheme is further illustrated:
Further, elevator brake brake-releasing gear also comprises the fixed block be connected away from one end of the second bearing with the second pull bar, and one end of fixed block is connected with tricing line, and the other end is provided with the horizontal hole coordinated with tricing line.Tricing line is connected with the second pull bar by fixed block, after tricing line walks around pulley away from one end of fixed block, through horizontal hole, and is connected with the operating mechanism that declutches outside well.By arranging horizontal hole, make the cabling of tricing line more smooth.
Further, fixed block is vertically arranged, and one end that tricing line is connected with fixed block is positioned at the below of horizontal hole.After tricing line is connected with fixed block, walks around pulley and pass from the horizontal hole being positioned at top, being finally connected with the operating mechanism that declutches outside well, making the cabling of tricing line more smooth.
Further, elevator brake brake-releasing gear also comprises limiting stopper, limiting stopper and fixed block near the side of pulley against, tricing line is connected with the side of fixed block away from pulley.By arranging limiting stopper, preventing fixed block off normal in the course of the work, ensureing the stability of elevator brake brake-releasing gear work.
Further, elevator brake brake-releasing gear also comprises protecting hose, and protecting hose to be socketed in tricing line and to declutch between operating mechanism outside fixed block and well.By connecing protecting hose at tricing line overcoat, avoiding tricing line to rub with other devices in hoistway in moving process, causing the wearing and tearing of tricing line, extend the service life of tricing line, ensure the stability of elevator brake brake-releasing gear work.
Further, protecting hose is provided with adapter sleeve near one end of fixed block, and adapter sleeve is sheathed in horizontal hole.By arranging adapter sleeve in horizontal hole, tricing line enters protecting hose by adapter sleeve, prevents tricing line from rubbing with the inwall of horizontal hole in moving process, extends the service life of tricing line further.
Further, the second pull bar is provided with through wires hole, and through wires hole is positioned at the infall of the second pull bar and the first pull bar, and one end of tricing line is connected with the second pull bar, and the other end is through through wires hole and pulley solderless wrapped connection.Tricing line one end is connected with the second pull bar, the other end through after through wires hole with pulley solderless wrapped connection, be finally connected with the operating mechanism that declutches outside well, make the cabling of tricing line more smooth.
Further, the operating mechanism that declutches outside well comprises base, the support be located on base, the rotor wheel be coupling with support, the handle that drives rotor wheel to rotate, rotor wheel is provided with the mounting hole coordinated with tricing line.Handle drives rotor wheel rotates, and drives tricing line to move simultaneously, realizes the tension of tricing line and loosens, flexibly simple to operate.
Further, peripheral pulley is socketed with anti-drop cover.By arranging anti-drop cover, preventing tricing line when sliding around pulley, coming off from pulley, ensureing the stability of elevator brake brake-releasing gear work.
Be further, elevator brake brake-releasing gear also comprises the first lift block and the second lift block, the two ends of the first lift block are connected with the bolt that declutches of the first pull bar and the first drg respectively, the two ends of the second lift block are connected with the bolt that declutches of the second pull bar and second brake respectively, and the first bearing and the second bearing are individually fixed on the first drg and second brake.First pull bar moves by pulling the first lift block to drive on the bolt that declutches of the first drg, and the second pull bar moves by pulling the second lift block to drive on the bolt that declutches of second brake, realizes the object declutched.
Compared with prior art, the present invention has following beneficial effect:
The present invention is by the operating mechanism tension tricing line that declutches outside well, utilize tricing line interlock pulley, the first pull bar and the second pull bar is driven upwards to rotate around the first bearing and the second bearing respectively, upwards lift the first drg and second brake simultaneously, the brake shoe of the first drg and second brake and the brake wheel of main frame are thrown off, reach the object declutched, lift car is movement smoothly under gravity; Unclamp the operating mechanism that to declutch outside well, tricing line is loosened, and the locking again of brake shoe and brake wheel, car can not move.Elevator brake brake-releasing gear adopts mechanical system to declutch, and can avoid the problem that brake-releasing gear lost efficacy because of electrical accident, safe and reliable.And the first pull bar and the second pull bar arranged in a crossed manner, after tension tricing line, the first pull bar and the second pull bar can be driven upwards to rotate, and the synchronism that the first drg and second brake declutch is high simultaneously, and braking force is stablized, and requirements of installation space is little.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention elevator brake brake-releasing gear;
Fig. 2 is the structural representation of the embodiment of the present invention first pull bar;
Fig. 3 is the structural representation of the embodiment of the present invention second pull bar;
Fig. 4 is the structural representation of embodiment of the present invention fixed block;
Fig. 5 is the structural representation of embodiment of the present invention tricing line and protecting hose;
Fig. 6 is the structural representation of operating mechanism of declutching outside embodiment of the present invention well.
Description of reference numerals:
10. main frame, 210. first drgs, 220. second brake, 310. first bearings, 320. second bearings, 40. tricing lines, 410. bolt cap, 420. fag end adapter plates, 430. plumbous heads, declutch outside 50. wells operating mechanism, 510. base, 520. support, 530. rotor wheel, 531. mounting hole, 540. handle, 550. anti-disk strippings, 560. lengthening bar, 610. first pull bars, 611. loose slot, 620. second pull bars, 621. through wires hole, 622. step groove, 623. fixed block, 6231. horizontal hole, 624. limiting stopper, 70. pulleys, 710. anti-drop cover, 810. first lift blocks, 820. second lift blocks, 90. protecting hoses, 910. adapter sleeve, 920. cushion block.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail:
As shown in Figure 1 to Figure 3, a kind of elevator brake brake-releasing gear, comprise and be symmetricly set in the first drg 210 on elevator main 10 and second brake 220, first bearing 310 and the second bearing 320, it also comprises tricing line 40, for the operating mechanism 50 that declutches outside the well strained or loosen tricing line 40, first pull bar 610 and the second pull bar 620 arranged in a crossed manner, first pull bar 610 one end and the first bearing 310 are rotatably connected, the other end is connected with pulley 70, first pull bar 610 is provided with loose slot 611, one end of second pull bar 620 is flexibly connected with the second bearing 320, the other end is connected with one end of tricing line 40 through loose slot 611, the other end of tricing line 40 is walked around pulley 70 and is connected with the operating mechanism 50 that declutches outside well, first drg 210 and second brake 220 are connected respectively with in the middle part of the first pull bar 610 He in the middle part of the second pull bar 620.
When elevator break down need declutch with elevator brake brake-releasing gear time, by declutching outside well, tricing line 40 strained by operating mechanism 50, tricing line 40 is utilized to link pulley 70, the first pull bar 610 and the second pull bar 620 is driven upwards to rotate around the first bearing 310 and the second bearing 320 respectively, upwards lift the first drg 210 and second brake 220 simultaneously, the brake shoe of the first drg 210 and second brake 220 and the brake wheel of main frame 10 are thrown off, reach the object declutched, lift car is movement smoothly under gravity; Unclamp the operating mechanism 50 that to declutch outside well, tricing line 40 is loosened, and the locking again of brake shoe and brake wheel, car can not move.Elevator brake brake-releasing gear adopts mechanical system to declutch, and can avoid the problem that brake-releasing gear lost efficacy because of electrical accident, safe and reliable.And the first pull bar 610 and the second pull bar 620 arranged in a crossed manner, after tension tricing line 40, the first pull bar 610 and the second pull bar 620 can be driven upwards to rotate, and the synchronism that the first drg 210 and second brake 220 declutch is high simultaneously, braking force is stablized, and requirements of installation space is little.
In the present embodiment, elevator brake brake-releasing gear also comprises the first lift block 810 and the second lift block 820, the two ends of the first lift block 810 are connected with the bolt that declutches of the first pull bar 610 and the first drg 210 respectively, the two ends of the second lift block 820 are connected with the bolt that declutches of the second pull bar 620 and second brake 220 respectively, and the first bearing 310 and the second bearing 320 are individually fixed on the first drg 210 and second brake 220.First pull bar 610 moves by pulling the first lift block 810 to drive on the bolt that declutches of the first drg 210, and the second pull bar 620 moves by pulling the second lift block 820 to drive on the bolt that declutches of second brake 220, realizes the object declutched.
As shown in figures 1 and 3, the second pull bar 620 is provided with through wires hole 621, and through wires hole 621 is positioned at the infall of the second pull bar 620 and the first pull bar 610, and one end of tricing line 40 is connected with the second pull bar 620, and the other end is through through wires hole 621 and pulley 70 solderless wrapped connection.Tricing line 40 one end is connected with the second pull bar 620, and the other end is rear and pulley 70 solderless wrapped connection through through wires hole 621, is finally connected with the operating mechanism 50 that declutches outside well, makes the cabling of tricing line 40 more smooth.
As shown in figures 1 and 3, second pull bar 620 and the first pull bar 610 infall are provided with the step groove 622 be oppositely arranged, be convenient to the second pull bar 620 pass from the loose slot 611 of the first pull bar 610, and through wires hole 621 is between two step grooves 622, smart structural design is reasonable.
As shown in Figure 1 and Figure 4, second pull bar 620 also comprises the fixed block 623 be connected away from one end of the second bearing 320 with the second pull bar 620, fixed block 623 is vertically arranged, and the lower end of fixed block 623 is connected with tricing line 40, and upper end is provided with the horizontal hole 6231 coordinated with tricing line 40.Tricing line 40 is connected with the second pull bar 620 by fixed block 623, after tricing line 40 walks around pulley 70 away from one end of fixed block 623, through horizontal hole 6231, and is connected with the operating mechanism 50 that declutches outside well.By arranging horizontal hole 6231, make the cabling of tricing line 40 more smooth.
In the present embodiment, horizontal hole 6231 is positioned on same level line with the vertex of pulley 70, ensures tricing line 40 level between horizontal hole 6231 and pulley 70.
As shown in Figure 1, the second pull bar 620 is also provided with limiting stopper 624, and fixed block 623 and the second pull bar 620 are coupling, limiting stopper 624 and fixed block 623 near the side of pulley 70 against, tricing line 40 is connected with the side of fixed block 623 away from pulley 70.By arranging limiting stopper 624, preventing fixed block 623 from rotating in the course of the work, ensureing the stability of elevator brake brake-releasing gear work.
As shown in Figure 1 and Figure 5, elevator brake brake-releasing gear also comprises protecting hose 90, and protecting hose 90 to be socketed in tricing line 40 and to declutch between operating mechanism 50 outside fixed block 623 and well.By connecing protecting hose 90 at tricing line 40 overcoat, tricing line 40 is avoided to rub with other devices in hoistway in moving process, cause the wearing and tearing of tricing line 40, extend the service life of tricing line 40, ensure the stability of elevator brake brake-releasing gear work.
As shown in Figure 1 and Figure 5, protecting hose 90 is provided with adapter sleeve 910 near one end of fixed block 623, adapter sleeve 910 is sheathed in horizontal hole 6231, adapter sleeve 910 is fixedly connected with fixed block 623 by bolt, the other end of protecting hose 90 is provided with cushion block 920, cushion block 920 is fixedly connected with the operating mechanism 50 that declutches outside well, protecting hose 90 two ends is separately fixed at outside fixed block 623 and well and declutches between operating mechanism 50.By arranging adapter sleeve 910 in horizontal hole 6231, tricing line 40 enters protecting hose 90 by adapter sleeve 910, prevents tricing line 40 from rubbing with the inwall of horizontal hole 6231 in moving process, extends the service life of tricing line 40 further.
As shown in figures 1 to 6, the operating mechanism 50 that declutches outside well comprises base 510, the support 520 be located on base 510, the rotor wheel 530 be coupling with support 520, the handle 540 that drives rotor wheel 530 to rotate, rotor wheel 530 is provided with the mounting hole 531 coordinated with tricing line 40, the cushion block 920 of protecting hose 90 is fixedly connected with base 510, rotor wheel 530 is provided with anti-disk stripping 550 away from the side of tricing line 40, and anti-disk stripping 550 is bolted on rotor wheel 530.Handle 540 drives rotor wheel 530 to rotate, and drives tricing line 40 to move simultaneously, realizes the tension of tricing line 40 and loosens, flexibly simple to operate.
As shown in Figure 6, the operating mechanism 50 that declutches outside well also comprises lengthening bar 560, and lengthening bar 560 is socketed on handle 540, makes pulling of handle 540 easier.Elevator is when day-to-day operation, and lengthening bar 560 is placed in storage box, from storage box, just takes out being socketed on handle 540, reduce daily taking up room during use.
As shown in Fig. 1, Fig. 4 to Fig. 6, one end that tricing line 40 is connected with fixed block 623 is provided with bolt cap 410 and fag end adapter plate 420, and bolt cap 410 is connected with fag end adapter plate 420, and fag end adapter plate 420 is connected with fixed block 623 by bolt.The other end of tricing line 40 is provided with plumbous 430, and plumbous 430 is connected with mounting hole 531.
As shown in Figure 1, pulley 70 periphery is socketed with anti-drop cover 710.By arranging anti-drop cover 710, preventing tricing line 40 when sliding around pulley 70, coming off from pulley 70, ensureing the stability of elevator brake brake-releasing gear work.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this specification sheets is recorded.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims (10)

1. an elevator brake brake-releasing gear, comprise and be symmetricly set in the first drg on elevator main and second brake, first bearing and the second bearing, it is characterized in that, also comprise tricing line, for the operating mechanism that declutches outside the well strained or loosen described tricing line, first pull bar arranged in a crossed manner and the second pull bar, described first pull bar one end and described first bearing are rotatably connected, the other end is connected with pulley, described first pull bar is provided with loose slot, one end of described second pull bar is flexibly connected with described second bearing, the other end is connected with one end of described tricing line through described loose slot, the other end of described tricing line is walked around described pulley and is connected with the operating mechanism that declutches outside described well, described first drg and described second brake are connected respectively with in the middle part of described first pull bar He in the middle part of described second pull bar.
2. elevator brake brake-releasing gear according to claim 1, it is characterized in that, also comprise the fixed block be connected away from one end of described second bearing with described second pull bar, one end of described fixed block is connected with described tricing line, and the other end is provided with the horizontal hole coordinated with described tricing line.
3. elevator brake brake-releasing gear according to claim 2, is characterized in that, described fixed block is vertically arranged, and one end that described tricing line is connected with described fixed block is positioned at the below of described horizontal hole.
4. elevator brake brake-releasing gear according to claim 3, is characterized in that, also comprise limiting stopper, described limiting stopper and described fixed block near the side of described pulley against.
5. elevator brake brake-releasing gear according to claim 2, is characterized in that, also comprise protecting hose, and described protecting hose to be socketed in described tricing line and to declutch between operating mechanism outside described fixed block and described well.
6. elevator brake brake-releasing gear according to claim 5, is characterized in that, described protecting hose is provided with adapter sleeve near one end of described fixed block, and described adapter sleeve is sheathed in described horizontal hole.
7. elevator brake brake-releasing gear according to claim 1, it is characterized in that, described second pull bar is provided with through wires hole, described through wires hole is positioned at the infall of described second pull bar and described first pull bar, one end of described tricing line is connected with described second pull bar, and the other end is through described through wires hole and described pulley solderless wrapped connection.
8. elevator brake brake-releasing gear according to claim 1, it is characterized in that, the operating mechanism that declutches outside described well comprises base, the support be located on described base, the rotor wheel be coupling with described support, the handle that drives described rotor wheel to rotate, described rotor wheel is provided with the mounting hole coordinated with described tricing line.
9. the elevator brake brake-releasing gear according to any one of claim 1 to 8, is characterized in that, described peripheral pulley is socketed with anti-drop cover.
10. the elevator brake brake-releasing gear according to any one of claim 1 to 8, it is characterized in that, also comprise the first lift block and the second lift block, the two ends of described first lift block are connected with the bolt that declutches of described first pull bar and described first drg respectively, the two ends of described second lift block are connected with the bolt that declutches of described second pull bar and described second brake respectively, and described first bearing and the second bearing are individually fixed on described first drg and described second brake.
CN201510419529.1A 2015-07-16 2015-07-16 Elevator brake brake-releasing gear Active CN105000491B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510419529.1A CN105000491B (en) 2015-07-16 2015-07-16 Elevator brake brake-releasing gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510419529.1A CN105000491B (en) 2015-07-16 2015-07-16 Elevator brake brake-releasing gear

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CN105000491A true CN105000491A (en) 2015-10-28
CN105000491B CN105000491B (en) 2017-10-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106829784A (en) * 2017-03-22 2017-06-13 日立电梯(中国)有限公司 A kind of foot-operated brake-releasing gear

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Publication number Priority date Publication date Assignee Title
JP2002145541A (en) * 2001-09-21 2002-05-22 Mitsubishi Electric Corp Brake device of elevator
CN201220905Y (en) * 2008-05-30 2009-04-15 宁波欣达曳引机科技有限公司 Brake releasing apparatus of brake
CN203212155U (en) * 2013-04-09 2013-09-25 康力电梯股份有限公司 Safety tongs
CN203805871U (en) * 2014-03-26 2014-09-03 江苏理工学院 Foldable rescue trailer device with stretchable guide rail
CN104370239A (en) * 2013-08-12 2015-02-25 日立电梯(中国)有限公司 Mechanical brake release device of machine-room-less lift brake
CN204291826U (en) * 2014-09-12 2015-04-29 张廷宽 Long arm fruit picking device
CN204737679U (en) * 2015-07-16 2015-11-04 日立电梯(中国)有限公司 Elevator brake device that declutches

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002145541A (en) * 2001-09-21 2002-05-22 Mitsubishi Electric Corp Brake device of elevator
CN201220905Y (en) * 2008-05-30 2009-04-15 宁波欣达曳引机科技有限公司 Brake releasing apparatus of brake
CN203212155U (en) * 2013-04-09 2013-09-25 康力电梯股份有限公司 Safety tongs
CN104370239A (en) * 2013-08-12 2015-02-25 日立电梯(中国)有限公司 Mechanical brake release device of machine-room-less lift brake
CN203805871U (en) * 2014-03-26 2014-09-03 江苏理工学院 Foldable rescue trailer device with stretchable guide rail
CN204291826U (en) * 2014-09-12 2015-04-29 张廷宽 Long arm fruit picking device
CN204737679U (en) * 2015-07-16 2015-11-04 日立电梯(中国)有限公司 Elevator brake device that declutches

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106829784A (en) * 2017-03-22 2017-06-13 日立电梯(中国)有限公司 A kind of foot-operated brake-releasing gear

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Application publication date: 20151028

Assignee: Hitachi elevator (China) Co., Ltd. Guangzhou factory

Assignor: Hitachi Elevator (China) Co., Ltd.

Contract record no.: 2018440000088

Denomination of invention: Elevator brake releasing device

Granted publication date: 20171027

License type: Common License

Record date: 20180704