CN106629286A - Falling testing tower - Google Patents
Falling testing tower Download PDFInfo
- Publication number
- CN106629286A CN106629286A CN201611149796.2A CN201611149796A CN106629286A CN 106629286 A CN106629286 A CN 106629286A CN 201611149796 A CN201611149796 A CN 201611149796A CN 106629286 A CN106629286 A CN 106629286A
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- China
- Prior art keywords
- oil cylinder
- hook
- axle
- car
- connecting rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000872 buffer Substances 0.000 claims abstract description 18
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 13
- 239000010959 steel Substances 0.000 claims abstract description 13
- 230000005484 gravity Effects 0.000 claims abstract description 8
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 abstract description 7
- 230000003139 buffering effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
Landscapes
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention provides a falling testing tower which comprises a base, a push oil cylinder, a push vehicle body, a buffering plate, a tower frame, heavy blocks, a testing frame, a guide shoe, an unhooking mechanism, an unhooking mechanism guiding device, guide rails, a lifting steel wire rope, a lifting device and a pump station. The falling testing tower is suitable for falling testing of safety tongs and buffers which have different strokes and different testing quality. The falling testing tower is characterized in that firstly, the unhooking mechanism can remotely released or reset or being connected with or disengaged from a lift car, people do not need to get close to the tower for operation, and due to the fact that a safety pin is adopted, safety can be ensured and operation efficiency is high; secondly, the tested buffers are hydraulically carried and are made to get close to or get away from the gravity center position of the lift car, labor force does not need to be used for carrying, and safety is ensured; and thirdly, the guiding device is provided with a braking device so that the problem that when external weight is released, the suspended steel wire rope is loosened and disengaged from a groove can be solved, the pump stations follows the drive device, and therefore the stroke of the lift car is not limited.
Description
Technical field
The present invention relates to the experimental rig in elevator safety field, in particular it relates to be used for the test tower for falling, is generally used for
Test buffer or safety tongs.
Background technology
Test tower is used for the elevator free falling that simulation loads load, is applicable to the safety of various speed and various quality
Pincers or buffer fall test.
Current test tower is typically by pylon, lifting device, tripping gear, the car equipped with load, guide rail and tested
Device (such as buffer) is constituted.In use, tripping gear is using Remote triggering and the artificial working method for being close to reset；
Tested device is removed to weight lower section using manpower, and security is poor；If test quality is larger, when external weights discharge, hang
The energy stored in steel wire rope can cause tripping gear to rebound, and cause the failures such as loose, the de- groove of hanging steel rope.
The content of the invention
For defect of the prior art, the test tower it is an object of the invention to provide one kind is fallen.
Fallen test tower, including pedestal, stand, guide rail, lifting device, car, unhook according to one kind that the present invention is provided
Mechanism, steel wire rope, push car body, push oil cylinder, buffer board；
Stand is provided with pedestal, guide rail is provided with stand, stand top is provided with lifting device, energy is provided with the inside of guide rail
The car for enough moving along the rail, can load one or more pouring weights in car；
Coupled with uncoupling rigging between lifting device and car, lifting device is coupled with uncoupling rigging using steel wire rope；
Stand bottom is provided with the push car body that can be run in the horizontal direction, and pushing car body can drive Jing by push oil cylinder
Cross the center of gravity lower section of car；
Stand bottom is provided with buffer board.
Preferably, the uncoupling rigging includes side plate, first axle, unhook oil cylinder, contiguous block, connecting rod, hook, load-bearing axle；
First axle, unhook oil cylinder, contiguous block, connecting rod, hook are provided between two blocks of side plates；
First axle connects lifting device by steel wire rope；
The piston of unhook oil cylinder is connected with one end of contiguous block, and the other end of contiguous block is hinged one end of two connecting rods, point
It is not designated as connecting rod A, connecting rod B；The other end of connecting rod A is hinged a hook, and the other end of connecting rod B is hinged another hook；
Hook is anterior by load-bearing axle hinged side, can rotate around load-bearing axle；
The front end of hook arranges semicircle, and two hooks can merge the 3rd axle of cladding car；
The piston composition quadric chain of hook, connecting rod, contiguous block and unhook oil cylinder, the piston of unhook oil cylinder being capable of band
Dynamic opening of hook or closure；After hook closure, two connecting rods are in horizontal level in horizontal level or substantially.
Preferably, safety cylinder is provided with the outside of the side plate, the piston connection safety pin of safety cylinder, side plate is provided with
With the via of safety pin Corresponding matching, when uncoupling rigging is closed, safety pin can extend into via gear under the driving of safety cylinder
Firmly the piston of unhook oil cylinder, prevents the piston of unhook oil cylinder from returning.
Preferably, including guider；
Guider is arranged between car and lifting device, for the guiding of uncoupling rigging；
Brake apparatus is provided with the guider；Brake apparatus can be triggered with remote controlled manner and answered
Position, or using triggering manually and reset.
Preferably, two hooks of the uncoupling rigging, the cavity formed during the two hook closures is a cylinder
Or essentially one cylinder；Link up with the 3rd axle for clamping car.
Preferably, the uncoupling rigging includes the second axle, and the second axle is used for the open angle and hook of control hook and closes
Carry out during conjunction spacing.
Preferably, the second axle is fastenedly connected side plate, between two hooks, and the piston positioned at unhook oil cylinder and connection
The lower section of block；
When hook closure, the piston of unhook oil cylinder promotes contiguous block tight against firmly the second axle.
Preferably, including oil cylinder hydraulic control system；Oil cylinder hydraulic control system is using bidirectional hydraulic lock and 3-position 4-way
Valve is controlled.
Compared with prior art, the present invention has following beneficial effect：
Present invention can be suitably applied to falling test in safety tongs and buffer for different strokes difference test qualities, its feature
It is：A) uncoupling rigging adopts hydraulic-driven quadric chain action, can remotely discharge or reset, or out of engagement with car,
It is not required to very important person's Proximity operation.Hook quadric chain using connecting rod 24 dead-centre position, using safety pin 19 and hydraulic-driven system
System is using bidirectional hydraulic lock 34 and three-position four-way valve 35, so safety is able to ensure and operating efficiency is higher.B) tested buffer
Carried using hydraulic pressure so as to close to or away from the position of centre of gravity of car 32, it is not necessary to use manpower transport, ensured safely.C) lead
Brake apparatus 12 is provided with device 11, is solved when external weights discharge, the problems such as hanging steel rope loose de- groove.Liquid
Press pump station 29 is servo-actuated with guider 11, makes the stroke of car 32 unrestricted.
Description of the drawings
The detailed description by reading non-limiting example made with reference to the following drawings, the further feature of the present invention,
Objects and advantages will become more apparent upon：
A kind of overall pattern of test tower that falls that Fig. 1 is provided for the present invention；
Fig. 2 is uncoupling rigging overall pattern；
Schematic diagram when Fig. 3 is uncoupling rigging release (opening)；
Schematic diagram when Fig. 4 is closed for uncoupling rigging；
Fig. 5 is anti-bouncing device schematic diagram；
Fig. 6 is the control loop schematic diagram of unhook oil cylinder 26；
Fig. 7 is the control loop schematic diagram of safety cylinder 18.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, some changes and improvements can also be made.These belong to the present invention
Protection domain.
As shown in Figures 1 to 5, fall test tower, including pedestal 1 for one kind for providing of the present invention, stand is set on pedestal 1
6, guide rail 13 is provided with stand 6, the top of stand 6 is provided with lifting device 15, is provided with what is can moved along guide rail 13 in the inner side of guide rail 13
A number of pouring weight 7 is provided with car 32, car 32, the quantity of pouring weight 7 can increase and decrease as needed.Lifting device 15 and car
Coupled with uncoupling rigging 10 between 32, lifting device 15 is coupled with uncoupling rigging 10 using steel wire rope 14.The bottom of stand 6 is provided with can
The push car body 3 for running in the horizontal direction, pushing car body 3 can be driven to the center of gravity lower section away from car 32 by push oil cylinder 2.
The bottom of stand 6 is provided with buffer board 5.Electrical control cabinet 16 is also show in Fig. 1, electrical control cabinet 16 is realized to frame for movement
Control function.
The matrix of uncoupling rigging 10 is made up of 2 side plates 20 and bolt 36, and in the outside of side plate 20 safety cylinder 18, peace are arranged
The full piston first line of a couplet of oil cylinder 18 is connected to safety pin 19.The corresponding position of side plate 20 is provided with the via 31 of safety pin 19, at two
First axle 21, unhook oil cylinder 26, contiguous block 25, connecting rod 24, hook 22, load-bearing axle 17 are provided between side plate 20.Hang in two pieces
The centre position of hook 22 is provided with the second axle 28, and first axle 21 is connected with hoisting mechanism 15, and unhook oil cylinder 26 is fixed into side plate 20
Integrally, it is spacing by the second axle 28 when hook 22 is opened, prevent connecting rod 24 from forming dead point with hook 22, hook 22 can be around load-bearing axle 17
Rotation, the piston composition quadric chain of hook 22, connecting rod 24, contiguous block 25 and unhook oil cylinder 26, the work of unhook oil cylinder 26
Plug can drive hook 22 to open or close.After linking up with 22 and closing, two pieces connecting rod 24 is in horizontal level or the contact of contiguous block 25 the
The top of two axles 28.
Guider 11 is arranged between car 32 and lifting device 15, for the guiding of uncoupling rigging 10, is being oriented to dress
Put and be provided with 11 brake apparatus 12, lead boots 37, hydraulic power unit 29, guider 11 is arranged between guide rail 13, car 32
Top.For little load-carrying and the test tower of little stroke, brake apparatus 12 can be not provided with, also hydraulic power unit 29 can be arranged on ground
Face.
Fall test tower specific operation process be：Suitable pouring weight 7 is first added in car 32, uncoupling rigging 10 is then made
Closure, i.e., after 22 closure is linked up with, two pieces connecting rod 24 contacts the top of the second axle 28, Safety oil in horizontal level or contiguous block 25
Cylinder 18 drives safety pin 19 to keep off on the top of connecting rod 24 by the via 31 on side plate 20, and operation lifting device 15 is with car 32
The position of requirement is risen to, tested buffer 4 is placed on car body 3 is pushed, operation pushes oil cylinder 2 and is sent in tested buffer 4
The center of gravity lower section of car 32, after the execution action of brake apparatus 12 that is directed on device 11 to clamp or be clamped in guide rail 13, so
Afterwards safety pin 19 is departed from into side plate 20, uncoupling rigging 10 is opened, the free falling under gravity of car 32 clashes into tested slow
Device 4 is rushed, now drop event is completed.During reset, the brake apparatus 12 being directed on device 11 is open and disengaged from guide rail 13, operation
Lifting device 15, uncoupling rigging 10 is close to and is arranged on the 3rd axle 23 at the top of car 32, after uncoupling rigging 10 is closed, make
Hook 22 in uncoupling rigging 10 embraces the 3rd axle 23, and safe operation oil cylinder 18 drives safety pin 19 to block connecting rod 24, now grasps
Make lifting device 15, car 32 lifted, operation afterwards pushes oil cylinder 2, push car body 3 with tested buffer 4 away from car 32,
Test process terminates.
More specifically, the two ends of the connecting rod 24 are connected respectively with hook 22, contiguous block 25, and hook 22 is located at when closing
Connecting rod 24 omits down position in level, it is ensured that self-locking.Even block block 25 is connected with the piston rod of unhook oil cylinder 26, unhook oil cylinder 26
It is fixed between the cavity of the formation of two pieces side plate 20.Hook 22, connecting rod 24, contiguous block 25 are arranged on the sky that two side plates 20 are formed
Between chamber, when contiguous block 25 is moved up and down, the circular port that hook 22 is formed can be opened or closed.Second is provided with side plate
Axle 28, is arranged on the inner side of two pieces hook 22, for the angle that hook 22 is opened, prevents hook 22 and connecting rod 24 from forming dead point.When
When connecting rod 24 is horizontally situated, by safety pin insert side plate 20 after can the anti-piston of locking hook oil cylinder 26 return, so as to prevent hang
Hook 22 is opened.The car 32 includes the framework 8 of surrounding, and also including the 3rd axle 23, pouring weight 7, the increase and decrease quantity of pouring weight 7 can be controlled
The gross weight of car 32.Car 32 can be moved by leading boots 9 along guide rail 13.The uncoupling rigging 10, top passes through axle 21
It is connected with lifting device 15, bottom is connected by the 3rd axle 23 with car 32.The carrying mechanism of the tested buffer 4 is by pushing
Oil cylinder 2, push car body 3, buffer board 5 are constituted, and being stretched by push oil cylinder 2 can be by tested buffer 4 close to or away from car
32 center of gravity.The guider 11 includes uncoupling rigging 10, brake apparatus 12, guiding mechanism 37, hydraulic power unit 29.It is logical
Crossing uncoupling rigging 10 can disengage or with reference to car 32.Hydraulic power unit 29 is used to provide power to unhook oil cylinder 26, fills with being oriented to
Put 11 to be servo-actuated.Guide rail 13 is fixed or departed to brake apparatus 12 for being directed to device 11.The effect of brake apparatus 12 is to consume weight
Storage when thing discharges is the energy in steel rope system.The hydraulic power unit 29 adopts bidirectional hydraulic lock 34, three-position four-way valve
35 controls.When not working, the two-way hydraulic fluid port of unhook oil cylinder 26 is in closed mode, i.e., break off relations machine when driving without external force
Structure 10 is located at initial invariant state.
In Fig. 6, Fig. 7, bidirectional hydraulic lock 34, three-position four-way valve 35 are shown.
The effect of bidirectional hydraulic lock 34：Its principle is that the pressure effect guide of other side's oil circuit is taken using two hydraulic control one-way valves
Oil, when a square tube road does not have pressure, the opposing party's pipeline is simultaneously closed off, and the effect used in herein is, when hydraulic power loses,
The oil-in and oil-out of unhook oil cylinder 26 and safety cylinder 18 in uncoupling rigging 10 is turned off, it is ensured that uncoupling rigging 10
Middle hook 22 keeps original position, prevents misoperation.
The effect of three-position four-way valve 35：When three-position four-way valve 35 does not have control signal, valve element is centrally located, now
Closed mode is in by the oil-in and oil-out of three-position four-way valve.Prevent the misoperation of uncoupling rigging 10.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can within the scope of the claims make a variety of changes or change, this not shadow
Ring the flesh and blood of the present invention.In the case where not conflicting, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (8)
1. one kind is fallen test tower, it is characterised in that including pedestal (1), stand (6), guide rail (13), lifting device (15), sedan-chair
Railway carriage or compartment (32), uncoupling rigging (10), steel wire rope (14), push car body (3), push oil cylinder (2), buffer board (5)；
It is provided with pedestal (1) in stand (6), stand (6) and is provided with guide rail (13), stand (6) top is provided with lifting device (15),
Being provided with guide rail (13) inner side can load one or more weights in the car (32) of guide rail (13) motion, car (32)
Block (7)；
Coupled with uncoupling rigging (10) between lifting device (15) and car (32), lifting device (15) is adopted with uncoupling rigging (10)
Coupled with steel wire rope (14)；
Stand (6) bottom is provided with the push car body (3) that can be run in the horizontal direction, and pushing car body (3) can be by push oil cylinder
(2) drive through the center of gravity lower section of car (32)；
Stand (6) bottom is provided with buffer board (5).
2. the test tower that falls according to claim 1, it is characterised in that the uncoupling rigging (10) including side plate (20),
First axle (21), unhook oil cylinder (26), contiguous block (25), connecting rod (24), hook (22), load-bearing axle (17)；
First axle (21), unhook oil cylinder (26), contiguous block (25), connecting rod (24), hook are provided between two pieces of side plates (20)
(22)；
First axle (21) connects lifting device (15) by steel wire rope (14)；
The piston of unhook oil cylinder (26) is connected with one end of contiguous block (25), and the other end of contiguous block (25) is hinged two connecting rods
(24) one end, is designated as respectively connecting rod A, connecting rod B；The other end of connecting rod A is hinged a hook (22), the other end hinge of connecting rod B
Connect another hook (22)；
Hook (22) is anterior by load-bearing axle (17) hinged side (20), can rotate around load-bearing axle (17)；
The front end of hook (22) arranges semicircle, and two hooks (22) can merge the 3rd axle (23) of cladding car (32)；
The piston composition quadric chain of hook (22), connecting rod (24), contiguous block (25) and unhook oil cylinder (26), unhook oil cylinder
(26) piston can drive hook (22) to open or close；After (22) closure is linked up with, two connecting rods (24) are in horizontal level
Or substantially in horizontal level.
3. the test tower that falls according to claim 2, it is characterised in that be provided with safety cylinder on the outside of the side plate (20)
(18), piston connection safety pin (19) of safety cylinder (18), side plate (20) is provided with the mistake with safety pin (19) Corresponding matching
Hole (31), when uncoupling rigging (10) is closed, safety pin (19) can extend into via (31) gear under the driving of safety cylinder (18)
Firmly the piston of unhook oil cylinder (26), prevents the piston of unhook oil cylinder (26) from returning.
4. the test tower that falls according to claim 1, it is characterised in that including guider (11)；
Guider (11) is arranged between car (32) and lifting device (15), for the guiding of uncoupling rigging (10)；
Brake apparatus (12) is provided with the guider (11)；Brake apparatus (12) can be touched with remote controlled manner
Send out and reset, or using triggering manually and reset.
5. the test tower that falls according to claim 1, it is characterised in that two hooks of the uncoupling rigging (10)
(22) cavity formed when, the two hooks (22) are closed is a cylinder or essentially one cylinder；Hook (22)
For clamping the 3rd axle (23) of car (32).
6. the test tower that falls according to claim 2, it is characterised in that the uncoupling rigging (10) is including the second axle
(28), the second axle (28) carries out spacing for the open angle and hook (22) of control hook (22) when closing.
7. the test tower that falls according to claim 6, it is characterised in that the second axle (28) is fastenedly connected side plate (20), position
Between two hooks (22), and the lower section of the piston positioned at unhook oil cylinder (26) and contiguous block (25)；
When (22) closure is linked up with, the piston of unhook oil cylinder (26) promotes contiguous block (25) tight against firmly the second axle (28).
8. the test tower that falls according to claim 1, it is characterised in that including oil cylinder hydraulic control system；Oil cylinder hydraulic
Control system is controlled using bidirectional hydraulic lock (34) and three-position four-way valve (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611149796.2A CN106629286B (en) | 2016-12-13 | 2016-12-13 | It falls and tests tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611149796.2A CN106629286B (en) | 2016-12-13 | 2016-12-13 | It falls and tests tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106629286A true CN106629286A (en) | 2017-05-10 |
| CN106629286B CN106629286B (en) | 2019-11-15 |
Family
ID=58824692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611149796.2A Expired - Fee Related CN106629286B (en) | 2016-12-13 | 2016-12-13 | It falls and tests tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106629286B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207968A (en) * | 2019-06-21 | 2019-09-06 | 安徽九纲机电有限公司 | A kind of hydraulic buffer of elevator test tower assembly line |
| CN110980462A (en) * | 2019-12-12 | 2020-04-10 | 庄燕婷 | Elevator hydraulic buffer test tower assembly line |
| CN113044689A (en) * | 2021-03-09 | 2021-06-29 | 河北东方富达机械有限公司 | Detacher for elevator safety component test |
| CN113511569A (en) * | 2021-04-15 | 2021-10-19 | 中船第九设计研究院工程有限公司 | Unhooking reset device and unhooking reset method |
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| CN2452679Y (en) * | 2000-12-06 | 2001-10-10 | 赵燕书 | Cylinder travel limiting device for plastic window angle cleaning machine |
| CN201906889U (en) * | 2010-12-24 | 2011-07-27 | 唐山市丰润区鑫源机械制造有限公司 | Track clamping device of metallurgical hot sawing machine |
| CN201993220U (en) * | 2011-03-31 | 2011-09-28 | 东莞市恒宇仪器有限公司 | Impact testing machine of roller blades |
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| CN203385550U (en) * | 2013-08-19 | 2014-01-08 | 天津市特种设备监督检验技术研究院 | Instantaneous-type anti-drop safety device inspection testbed |
| CN105174022A (en) * | 2015-09-10 | 2015-12-23 | 长沙嘉百精密机械有限公司 | Automatic hydraulic unhooking device |
| CN105540423A (en) * | 2016-01-21 | 2016-05-04 | 河南理工大学 | Quick unhooking device with rocker sliding block mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2452679Y (en) * | 2000-12-06 | 2001-10-10 | 赵燕书 | Cylinder travel limiting device for plastic window angle cleaning machine |
| CN201906889U (en) * | 2010-12-24 | 2011-07-27 | 唐山市丰润区鑫源机械制造有限公司 | Track clamping device of metallurgical hot sawing machine |
| CN201993220U (en) * | 2011-03-31 | 2011-09-28 | 东莞市恒宇仪器有限公司 | Impact testing machine of roller blades |
| CN202538209U (en) * | 2012-03-28 | 2012-11-21 | 徐州重型机械有限公司 | Supporting leg vertical oil cylinder limiting protection device and fire-fighting truck provided with same |
| CN102680198A (en) * | 2012-05-14 | 2012-09-19 | 杭州沪宁电梯配件有限公司 | Elevator buffer testing equipment |
| CN203385550U (en) * | 2013-08-19 | 2014-01-08 | 天津市特种设备监督检验技术研究院 | Instantaneous-type anti-drop safety device inspection testbed |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110207968A (en) * | 2019-06-21 | 2019-09-06 | 安徽九纲机电有限公司 | A kind of hydraulic buffer of elevator test tower assembly line |
| CN110980462A (en) * | 2019-12-12 | 2020-04-10 | 庄燕婷 | Elevator hydraulic buffer test tower assembly line |
| CN113044689A (en) * | 2021-03-09 | 2021-06-29 | 河北东方富达机械有限公司 | Detacher for elevator safety component test |
| CN113044689B (en) * | 2021-03-09 | 2024-04-09 | 河北东方富达机械有限公司 | Unhooking device for elevator safety component test |
| CN113511569A (en) * | 2021-04-15 | 2021-10-19 | 中船第九设计研究院工程有限公司 | Unhooking reset device and unhooking reset method |
| CN113511569B (en) * | 2021-04-15 | 2023-01-24 | 中船第九设计研究院工程有限公司 | Unhooking reset device and unhooking reset method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106629286B (en) | 2019-11-15 |
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Granted publication date: 20191115 |