CN108483328B - The servo-actuated detection protective device of lifting platform - Google Patents
The servo-actuated detection protective device of lifting platform Download PDFInfo
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- CN108483328B CN108483328B CN201810474784.XA CN201810474784A CN108483328B CN 108483328 B CN108483328 B CN 108483328B CN 201810474784 A CN201810474784 A CN 201810474784A CN 108483328 B CN108483328 B CN 108483328B
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- trigger switch
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- 238000001514 detection method Methods 0.000 title claims abstract description 17
- 230000001681 protective effect Effects 0.000 title claims abstract description 17
- 230000006698 induction Effects 0.000 claims abstract description 25
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910052742 iron Inorganic materials 0.000 claims abstract description 12
- 230000005611 electricity Effects 0.000 claims description 2
- 230000007812 deficiency Effects 0.000 abstract 1
- 230000007423 decrease Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 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 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/08—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement hydraulically or pneumatically operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
Abstract
The present invention relates to a kind of servo-actuated detection protective devices of lifting platform, solve the deficiencies in the prior art, technical solution are as follows: the top of support column and the bottom of Lifting platform connect, cylinder lower part offers a venthole, venthole is connected to cavity, the bottom of support column is provided with the permanent magnet that packet sets elastic cushion, an annular mounting groove is provided at the top of support column, it is filled out in annular mounting groove equipped with induction coil, the output end of induction coil is connect through cylinder with alarm electromagnet, alarm electromagnet is mounted in the first connecting tube, the first trigger switch is also equipped in first connecting tube, iron slider and reset spring, first trigger switch is mounted on iron slider, first trigger switch alignment alarm electromagnet, it is isolated between first trigger switch and alarm electromagnet by reset spring, iron slider slips in the first connecting tube, first triggering is opened Pass is connect with the console of Mobile stage.
Description
Technical field
This patent is related to a kind of safe ancillary equipment of stage, and in particular to a kind of servo-actuated detection protective device of lifting platform.
Background technique
As the improvement of people's living standards, spiritual civilization demand is more and more vigorous, especially for small-scale stage, micro-
The demand of type stage, community's stage, do not limited to with front and back, simple lighting, it is more safe and reliable small-sized
The introducing of stage machinery is a shortcut for promoting current small-scale stage, miniature stage, community's stage, the dance with mobile module
The introducing of platform can greatly enrich stage expressive force, improve the stage form of expression, can build in a limited space preferably
Stage effect, therefore, stage of the exploitation with mobile module are imperative.
China Patent Publication No.: CN107905576A, publication date on April 13rd, 2018, a kind of scissors type elevating is disclosed
Stage is related to stage machinery technical field, concentrates on being vertically arranged to solve the gravity of elevator stage in the prior art
Elevator stage is caused to go up and down problem unstable, that safety coefficient is low on lead screw；It includes the pedestal of support frame, fixing support rack
With the stage boards for being mounted on support frame upper end, it is provided with the studdle being parallel to each other with stage boards between support frame, supports spiral shell
Scissor-type lifting mechanism is equipped between bar and stage boards, scissor-type lifting mechanism includes upper connecting column and lower connecting column, is connected on two
Connect arranged in a crossed manner there are two lifter plate between column and lower connecting column, two lifter plate upper ends and upper connection are column articulated, and two go up and down
Plate lower end and lower connection are column articulated, and studdle is equipped with the driving mechanism for driving lower connecting column to move in opposite direction.Pass through
Implement the technical program, can constitute multi-point support by the force of gravity to support frame of stage, improve safety coefficient, and can be real
Existing stage fast lifting.But it is had a problem that in such technology and is just moveable stage using lifting platform (frame) in addition to cutting
Fork elevating mechanism (i.e. bridging) etc power mechanism also needs to go wrong in one kind in bridging, when carry out safety
The urgent ancillary equipment of protection.Currently this equipment is also the absence of in this field.
Summary of the invention
It is an object of the invention to solve the above-mentioned prior art to lack one kind when bridging goes wrong or is passive
The problem of carrying out the urgent ancillary equipment of safeguard protection provides a kind of servo-actuated detection protective device of lifting platform.
The technical solution adopted by the present invention to solve the technical problems is: a kind of servo-actuated detection protective device of lifting platform is fitted
For the lifting platform of Mobile stage, the lifting platform of Mobile stage includes hydraulic scissors support component, Lifting platform and fixed frame
Frame, the fixed frame are fixedly connected with the ground, and the fixed frame connects by the way that hydraulic scissors support component and Lifting platform are fixed
It connects, the control terminal of hydraulic scissors support component and the console of Mobile stage connect, and the servo-actuated detection protective device of lifting platform includes
Cylinder, bottom nozzle mounts and support column, the surface of the cylinder are fixed with the first connecting tube, and the lower part of the cylinder passes through bottom
Fixing piece is fixed on ground, and the cylinder is internally provided with vertical cavity, and the support column is plugged on described perpendicular
In straight cavity, the support column and the vertical cavity are clearance fit, the top of the support column and Lifting platform
Bottom connection, the cylinder lower part offer a venthole, and the venthole is connected to the cavity, the bottom of the support column
Portion is provided with the permanent magnet that packet sets elastic cushion, and an annular mounting groove, the annular installation are provided at the top of the support column
It is filled out in slot equipped with induction coil, the output end of induction coil is connect through cylinder with alarm electromagnet, and alarm electromagnet is mounted on
In first connecting tube, the first trigger switch, iron slider and reset spring are also equipped in the first connecting tube, first triggering is opened
Pass is mounted on iron slider, the first trigger switch alignment alarm electromagnet, first trigger switch and alarm electromagnet
Between be isolated by reset spring, the iron slider slips in the first connecting tube, first trigger switch and mobile waves
The console of platform connects.Safety support dagger of the invention, can be with liter due to the presence of venthole when working normally
It drops platform and carries out oscilaltion, execution is servo-actuated movement；Four safety support daggers of arranged beneath of preferably each lifting platform quadrangle,
When the bridging of stage goes wrong, if lifting platform dramatic decrease, safety support dagger is lesser due to its venthole
Factor leads to that instantaneous deformation will not occur, can be with the main lifting platform of temporary stabilization；Then slowly decline；It is in this way not in great
Safety accident, meanwhile, this programme structural stability is good, and also there is detachability, can be mounted on existing Mobile stage,
Can also be installed on rural area, common square, the form connected using top flange fitted bolt when installation, adaptability compared with
Extensively.Fitup in the present invention refers to the disposable stage of small assembled type, different from general stage vehicle, is generally used for centre type
Outdoor rally, performance.The present invention can export alarm signal when breaking down while playing support, be not necessarily to stage
Any transformation is carried out to route you can learn that stage location information.The electricity that electromagnet is only formed in fly-cutting magnetic induction line
Enough electric currents are instantaneously obtained in stream, there is also the requirements of distance for fly-cutting here, i.e., enter sense except induction coil
It answers in coil, so that alarm is triggered, and the electric current that cutting magnetic induction line is formed at a slow speed is not sufficient to the electromagnet for being and pushes magnet, from
It alarms without triggering, in the present invention, as long as selecting suitable electromagnet, induction coil, that is, can reach reasonable effect.
Preferably, the position that the cavity bottom corresponds to support column is provided with buffer spring, the top of the buffer spring
End is configured with elastic cushion.
Preferably, all ventholes are divided into two groups, every group of venthole is respectively positioned on the side of the cylinder, two groups of ventholes
Symmetrically.
Preferably, surface is connected with several Hall sensors, the position of the Hall sensor is above described
The position of one connecting tube, the output end of the Hall sensor are electrically connected with the console of Mobile stage.
Preferably, the output end of at least one induction coil pass sequentially through a signal amplifier and latch with
The console of Mobile stage is electrically connected.
Preferably, being configured with the second connecting tube on the cylinder, second connecting tube is through cylinder and the cavity
It is connected, a frizzen is plugged in second connecting tube, the front end of frizzen is semicircle, the front end position of the frizzen
It sets and is aligned with the end face of the support column, be also equipped with the second trigger switch and reset spring in the second connecting tube, described second
Trigger switch is directed at the rear end of frizzen, is isolated between second trigger switch and the rear end of frizzen by reset spring,
Second trigger switch is fixed in the second connecting tube, the console connection of second trigger switch and Mobile stage.
Setting is a mechanical trigger architecture in this way, can achieve further security setting by mechanical triggering.Also
Be interlocking bar with hemispherical projections trigger unit there is also following positional relationships: hemispherical projections trigger unit with smaller momentum and linkage
Bar contact when, even if hemispherical projections trigger unit make interlocking bar be in single-point abutting, interlocking bar second end still with
Trolley shoe keeps connection, and still, when hemispherical projections trigger unit is contacted with smaller momentum and interlocking bar, interlocking bar is outside
The distance of pop-up is mutually disengaged interlocking bar second end with trolley shoe, thus, it is possible to keep the present embodiment can
It is servo-actuated to realize completely enclosed support again.
Preferably, the power end of the Hall sensor, the first end of the first trigger switch and the second trigger switch
First end is connect with battery, and the output end of the Hall sensor, the second end of the first trigger switch and the second triggering are opened
The second end of pass passes through bus and the console of Mobile stage connects, and the battery is fixed on cylinder or is mobile electric
Source power supply.The mode of battery setting is varied, can be external battery, is also possible to be fixed on the electric power storage on cylinder
Pond, structure is relatively easy, and those skilled in the art being capable of obtaining without doubt.
Preferably, the position of second trigger switch is lower than the position of first trigger switch.The present invention is in this way
Setting drives interlocking bar if lifting platform drops at threshold value, and interlocking bar movement is popped up outward, and it is logical that sliding block moves downward blocking
Stomata is ventilated after hole plug, and gas confinement degree is more preferable in cavity, only exposes less venthole, is played bigger support and is made
With.Trolley shoe can be distributed in interlocking bar top, lower section or have up and down in the application, and therefore, the venthole that multiple groups are arranged is made
With being that lifting platform will not cause stage normally to rise when normally rising or falling servo-actuated because of one of venthole is blocked
Stage speed goes wrong.
Substantial effect of the invention is: safety support dagger of the invention is when working normally, due to venthole
In the presence of, it can be with lifting platform progress oscilaltion, execution is servo-actuated movement；The arranged beneath of preferably each lifting platform quadrangle
Four safety support daggers, when the bridging of stage goes wrong, if lifting platform dramatic decrease, safety support dagger due to
The lesser factor of its venthole leads to that instantaneous deformation will not occur, can be with the main lifting platform of temporary stabilization；Then slowly decline；In this way
It is not in great safety accident, meanwhile, this programme structural stability is good, also has detachability, can be mounted on existing
Mobile stage on, can also be installed on rural area, common square, be connected using top flange fitted bolt when installation
Form, adaptability is wider.Fitup in the present invention refers to the disposable stage of small assembled type, not with general stage vehicle
Together, the outdoor rally of centre type, performance are generally used for.The present invention being capable of output while playing support when breaking down
Alarm signal, any transformation is carried out to route without stage you can learn that stage location information.Electromagnet is only quick
Cutting magnetic induction line formed electric current in instantaneously obtain enough electric currents, there is also the requirements of distance for fly-cutting here, i.e., from
Enter in induction coil except induction coil, to trigger alarm, and at a slow speed the electric current of cutting magnetic induction line formation be not sufficient to be
Electromagnet push magnet, so that alarm will not be triggered, in the present invention, as long as selecting suitable electromagnet, induction coil, i.e.,
It can reach reasonable effect.
Detailed description of the invention
Fig. 1 is general arrangement schematic of the invention；
Fig. 2 is preferred structure schematic diagram of the invention；
Fig. 3 is part-structure enlarged diagram in the present invention；
In figure: a1, connection box, a2, support column, a3, cavity, a4, permanent magnet, a5, Hall sensor, a6, first
Connecting tube, a7, the second connecting tube, b1, electromagnet, b2, the first trigger switch, b3, frizzen, b4, the second trigger switch.
Specific embodiment
Below by specific embodiment, and in conjunction with attached drawing, technical scheme of the present invention will be further explained in detail.
Embodiment 1:
A kind of servo-actuated detection protective device (referring to attached drawing 1-3) of lifting platform is mobile suitable for the lifting platform of Mobile stage
The lifting platform of formula stage includes hydraulic scissors support component, Lifting platform and fixed frame, the fixed company of the fixed frame and ground
Connect, the fixed frame is fixedly connected by hydraulic scissors support component with Lifting platform, the control terminal of hydraulic scissors support component with
The console of Mobile stage connects, and the servo-actuated detection protective device of lifting platform includes cylinder, bottom nozzle mounts and support column a2, institute
The surface for stating cylinder is fixed with the first connecting tube a6, and the lower part of the cylinder is fixed on ground by bottom nozzle mounts,
The cylinder is internally provided with vertical cavity a3, and the support column is plugged in the vertical cavity, the support column
It is clearance fit with the vertical cavity, the top of the support column and the bottom of Lifting platform connect, the cylinder lower part
A venthole is offered, the venthole is connected to the cavity, and the bottom of the support column is provided with packet and sets elastic cushion
Permanent magnet a4 is provided with an annular mounting groove at the top of the support column, fills out in the annular mounting groove equipped with induction coil,
The output end of induction coil is connect through cylinder with alarm electromagnet b1, and alarm electromagnet is mounted in the first connecting tube, and first
The first trigger switch, iron slider and reset spring are also equipped in connecting tube, first trigger switch is mounted on iron slider,
First trigger switch alignment alarm electromagnet, between first trigger switch and alarm electromagnet by reset spring every
From the iron slider slips in the first connecting tube, the console connection of first trigger switch and Mobile stage.It is described
The position that cavity bottom corresponds to support column is provided with buffer spring, and the top of the buffer spring is configured with elastic cushion.The column
The surface of body is connected with several Hall sensors a5, and the position of the Hall sensor is above the position of first connecting tube
It sets, the output end of the Hall sensor is electrically connected with the console of Mobile stage.The output of at least one induction coil
End passes sequentially through a signal amplifier and latch is electrically connected with the console of Mobile stage.It is configured on the cylinder
Second connecting tube a7, second connecting tube are connected through cylinder with the cavity, are plugged with one in second connecting tube
The front end of frizzen b3, frizzen are semicircle, and the front position of the frizzen is aligned with the end face of the support column, second
The second trigger switch b4 and reset spring, the rear end of the second trigger switch alignment frizzen, institute are also equipped in connecting tube
It states and is isolated between the second trigger switch and the rear end of frizzen by reset spring, second trigger switch is fixed on the second company
In adapter tube, the console of second trigger switch and Mobile stage is connected.The power end of the Hall sensor, the first touching
The first end and the first end of the second trigger switch for sending out switch are connect with battery, the output end of the Hall sensor, the
The second end of the second end of one trigger switch and the second trigger switch passes through bus and the console of Mobile stage connects, institute
Battery is stated to be fixed on cylinder or power for mobile power source.It is opened lower than first triggering position of second trigger switch
The position of pass.
The safety support dagger of the present embodiment, can be with lifting platform due to the presence of venthole when working normally
Oscilaltion is carried out, execution is servo-actuated movement；Four safety support daggers of arranged beneath of preferably each lifting platform quadrangle, work as dance
When the bridging of platform goes wrong, if lifting platform dramatic decrease, safety support dagger is due to the lesser factor of its venthole
Lead to that instantaneous deformation will not occur, it can be with the main lifting platform of temporary stabilization；Then slowly decline；It is in this way not in great safety
Accident, meanwhile, this programme structural stability is good, also has detachability, can be mounted on existing Mobile stage, can also
To be installed on rural area, common square, the form connected when installation using top flange fitted bolt, adaptability is wider.
Fitup in the present embodiment refers to the disposable stage of small assembled type, different from general stage vehicle, is generally used for centre type
Outdoor rally, performance.The present embodiment can export alarm signal when breaking down while playing support, without dance
Platform any transformation is carried out to route you can learn that stage location information.What electromagnet was only formed in fly-cutting magnetic induction line
Enough electric currents are instantaneously obtained in electric current, fly-cutting here enters there is also the requirement of distance except induction coil
In induction coil, so that alarm is triggered, and the electric current that cutting magnetic induction line is formed at a slow speed is not sufficient to the electromagnet for being and pushes sliding rail
Block in the present embodiment, as long as selecting suitable electromagnet, induction coil, that is, can reach reasonable so that alarm will not be triggered
Effect.It can choose one connection box a1 of setting on cylinder when connecting with the console of Mobile stage, then concentrate
It is connect with the console of Mobile stage.
In fact, can also be at least provided with a gas vent in the present embodiment middle column body, gas vent and venthole are not
It is with place, configuration trolley shoe is not needed outside gas vent, even if can at least guarantees to trigger when lifting platform decline
Lifting platform can still be dropped to bottom in the case where plugging other ventholes by interlocking bar.
Embodiment 2:
The present embodiment is substantially the same manner as Example 1, the difference is that, in the present embodiment, it is not provided with gas vent, setting one
A gas vent is to lead to whole gas because the end face of support column can trigger the movement of trolley shoe when installing servo-actuated for the first time
Press seal closes can not be servo-actuated completely, and therefore, it is necessary to a gas vents, and hand-reset is carried out in a longer period of time,
The end face of support column is provided with hemispherical projections trigger unit, and it is because the present embodiment is selected that gas vent is not provided in the present embodiment
Be more accurately to measure, that is, there is also following positional relationships with hemispherical projections trigger unit for interlocking bar: hemispherical is convex
When playing trigger unit and contacted with smaller momentum and interlocking bar, even if hemispherical projections trigger unit supports interlocking bar in single-point
When connecing, interlocking bar second end still keeps connecting with trolley shoe, still, when hemispherical projections trigger unit is with smaller momentum and linkage
When bar contacts, the distance that interlocking bar pops up outward is mutually disengaged interlocking bar second end with trolley shoe, as a result, may be used
So that the present embodiment, which can keep servo-actuated, can realize completely enclosed support again.
Above-mentioned embodiment is only a preferred solution of the present invention, not the present invention is made in any form
Limitation, there are also other variations and modifications on the premise of not exceeding the technical scheme recorded in the claims.
Claims (7)
1. the servo-actuated detection protective device of a kind of lifting platform, suitable for the lifting platform of Mobile stage, the lifting platform of Mobile stage
Including hydraulic scissors support component, Lifting platform and fixed frame, the fixed frame is fixedly connected with the ground, the fixed frame
It is fixedly connected by hydraulic scissors support component with Lifting platform, the control terminal of hydraulic scissors support component and the control of Mobile stage
Platform connection, it is characterised in that: the servo-actuated detection protective device of lifting platform includes cylinder, bottom nozzle mounts and support column, the cylinder
Surface be fixed with the first connecting tube, the lower part of the cylinder is fixed on ground by bottom nozzle mounts, the cylinder
Be internally provided with vertical cavity, the support column is plugged in the vertical cavity, the support column and described vertical
Cavity be clearance fit, the bottom of the top of the support column and Lifting platform connects, and the cylinder lower part offers one
Venthole, the venthole are connected to the cavity, and the bottom of the support column is provided with the permanent magnet that packet sets elastic cushion, described
Be provided with an annular mounting groove at the top of support column, filled out in the annular mounting groove equipped with induction coil, induction coil it is defeated
Outlet is connect through cylinder with alarm electromagnet, and alarm electromagnet is mounted in the first connecting tube, is also installed in the first connecting tube
There are the first trigger switch, iron slider and reset spring, first trigger switch is mounted on iron slider, and first triggering is opened
Alignment alarm electromagnet is closed, is isolated between first trigger switch and alarm electromagnet by reset spring, the iron slider
It slips in the first connecting tube, the console connection of first trigger switch and Mobile stage.
2. the servo-actuated detection protective device of lifting platform according to claim 1, it is characterised in that: the corresponding branch of the cavity bottom
The position of dagger is provided with buffer spring, and the top of the buffer spring is configured with elastic cushion.
3. the servo-actuated detection protective device of lifting platform according to claim 1, it is characterised in that: the surface of the cylinder connects
There are several Hall sensors, the position of the Hall sensor is above the position of first connecting tube, and the Hall passes
The output end of sensor is electrically connected with the console of Mobile stage.
4. the servo-actuated detection protective device of lifting platform according to claim 1, it is characterised in that: at least one induction coil
Output end pass sequentially through a signal amplifier and latch is electrically connected with the console of Mobile stage.
5. the servo-actuated detection protective device of lifting platform according to claim 3, it is characterised in that: configured with the on the cylinder
Two connecting tubes, second connecting tube are connected through cylinder with the cavity, and a triggering is plugged in second connecting tube
The front end of bar, frizzen is semicircle, and the front position of the frizzen is aligned with the end face of the support column, the second connecting tube
Inside it is also equipped with the second trigger switch and reset spring, the rear end of the second trigger switch alignment frizzen, second touching
It to be isolated between hair switch and the rear end of frizzen by reset spring, second trigger switch is fixed in the second connecting tube,
The connection of the console of second trigger switch and Mobile stage.
6. the servo-actuated detection protective device of lifting platform according to claim 5, it is characterised in that: the electricity of the Hall sensor
The first end of source, the first end of the first trigger switch and the second trigger switch is connect with battery, the Hall sensor
Output end, the second end of the first trigger switch and the second end of the second trigger switch pass through the control of bus and Mobile stage
Platform connection processed, the battery are fixed on cylinder or power for mobile power source.
7. the servo-actuated detection protective device of lifting platform according to claim 6, it is characterised in that: second trigger switch
Position is lower than the position of first trigger switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810474784.XA CN108483328B (en) | 2018-05-17 | 2018-05-17 | The servo-actuated detection protective device of lifting platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810474784.XA CN108483328B (en) | 2018-05-17 | 2018-05-17 | The servo-actuated detection protective device of lifting platform |
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| CN108483328A CN108483328A (en) | 2018-09-04 |
| CN108483328B true CN108483328B (en) | 2019-10-15 |
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| CN201810474784.XA Active CN108483328B (en) | 2018-05-17 | 2018-05-17 | The servo-actuated detection protective device of lifting platform |
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| CN112344162B (en) * | 2020-09-30 | 2023-11-21 | 联想(北京)有限公司 | Support device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202704983U (en) * | 2012-07-31 | 2013-01-30 | 湖北三江航天红阳机电有限公司 | Anti-dropping safety device capable of automatically detecting |
| CN203160753U (en) * | 2012-11-28 | 2013-08-28 | 总装备部工程设计研究总院 | Safe locking device for preventing lifting platform from falling accidentally |
| CN204463655U (en) * | 2015-02-05 | 2015-07-08 | 刘蕴葆 | Used during elevator falling braking apparatus for demonstrating |
| CN105545022B (en) * | 2015-12-22 | 2017-10-10 | 浙江工业大学义乌科学技术研究院有限公司 | The revolving stage of guardrail magnetic password connection |
| CN206088896U (en) * | 2016-08-31 | 2017-04-12 | 中冶华天工程技术有限公司 | Elevating platform electro -magnet electromagnetic force control system |
| CN107905576A (en) * | 2017-12-23 | 2018-04-13 | 河南智盈电子技术有限公司 | A kind of scissors type elevating stage |
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