CN208135829U - A kind of aerial work platform luffing range of cantilever support impact protection system - Google Patents
A kind of aerial work platform luffing range of cantilever support impact protection system Download PDFInfo
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- CN208135829U CN208135829U CN201721877775.2U CN201721877775U CN208135829U CN 208135829 U CN208135829 U CN 208135829U CN 201721877775 U CN201721877775 U CN 201721877775U CN 208135829 U CN208135829 U CN 208135829U
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- luffing
- mouthfuls
- oil cylinder
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- protection system
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- 239000000306 component Substances 0.000 claims abstract description 17
- 230000008859 change Effects 0.000 claims abstract description 8
- 239000008358 core component Substances 0.000 claims abstract description 8
- 239000003921 oil Substances 0.000 claims description 72
- 239000012530 fluid Substances 0.000 claims description 8
- 230000003628 erosive effect Effects 0.000 claims description 4
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000003116 impacting effect Effects 0.000 abstract 1
- 230000035939 shock Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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- Jib Cranes (AREA)
- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model relates to a kind of aerial work platform luffing range of cantilever support impact protection systems, including cantilever crane, the amplitude oil cylinder fallen and luffing anti whip device are erected for actuating arm, the luffing anti whip device is connected to the rodless cavity of amplitude oil cylinder, the luffing anti whip device includes flow-regulating components and nonreturn valve core component, and cantilever crane triggering flow-regulating components work is then gradually reduced into the flow in amplitude oil cylinder rodless cavity during cantilever crane raising；In cantilever crane, falling initial stage, the oil pressure of amplitude oil cylinder rodless cavity force nonreturn valve core component to be opened by maximum change angle, smooth to promote amplitude oil cylinder to fall after rise.The utility model can effectively avoid platform caused by impacting because of luffing from shaking big problem, have many advantages, such as that using effect is good, reliable performance, compact structure.
Description
Technical field
The utility model belongs to new energy special vehicle technical field, and is specifically related to a kind of aerial work platform cantilever crane
Luffing impact protection system is suitable for the engineering machinery vehicles such as aerial work platform, electric power.
Background technique
The upper arm amplitude oil cylinder of insulated type aerial work platform is in the partition of the insulation between upper and lower insulation arm section at present,
The electric communication signal in the section can not pass, and the sensors such as travel switch are not available in the system, lead to existing change
Width protecting against shock technology is not applicable.Current similar product both domestic and external can only also limit the stroke and luffing range of cantilever support of upper arm amplitude oil cylinder
Angle, can not achieve luffing range of cantilever support automatic protecting against shock control.Insulated type aerial work platform have insulation cantilever crane elasticity compared with
Big and more joint feature, luffing impact of the cantilever crane in luffing to maximum angle is larger, the rolling generated to workbench
It moves clearly, drastically influence operating personnel's safety on platform and uses confidence.
Summary of the invention
In view of the above-mentioned problems, the utility model provides a kind of aerial work platform luffing range of cantilever support impact protection system, it can
Luffing impact when automatic reduction luffing range of cantilever support to maximum angle, and cylinder action can be effectively locked, improve operation people on platform
Member's safety and comfort.
To achieve the above object, the technical solution adopted in the utility model is：A kind of aerial work platform luffing range of cantilever support
Impact protection system including cantilever crane, erects the amplitude oil cylinder fallen and luffing anti whip device, the luffing erosion control for actuating arm
It hits device to be connected to the rodless cavity of amplitude oil cylinder, the luffing anti whip device includes flow-regulating components and nonreturn valve core group
Part, the work of cantilever crane triggering flow-regulating components is during cantilever crane raising to gradually reduce the stream entered in amplitude oil cylinder rodless cavity
Amount is until be 0；In cantilever crane, falling initial stage, the oil pressure of amplitude oil cylinder rodless cavity force nonreturn valve core group by maximum change angle
Part is opened, smooth to promote amplitude oil cylinder to fall after rise.
Further, the luffing anti whip device further includes rotating element, is connected with flow-regulating components, in cantilever crane
During raising cantilever crane touch rotating element and enable to rotating element rotation then triggering flow-regulating components work with
It is gradually reduced the flow entered in amplitude oil cylinder rodless cavity.
It further, further include the reversal valve being connected with oil sources, the rodless cavity of the amplitude oil cylinder passes through luffing protecting against shock
Device is connected with reversal valve, and the rod chamber of amplitude oil cylinder is connected with reversal valve.
It further, further include the arm rear-end collision plate for being mounted on cantilever crane arm tail, for being in contact with the rotating element.
It further, further include arm mounting rack, luffing anti whip device is mounted on arm mounting rack.
Further, one end of the amplitude oil cylinder and cantilever crane be hinged, the other end and the arm mounting rack are hinged.
Further, the rotating element includes push rod and contact, and the flow-regulating components include ball valve core, the change
Width anti whip device further includes that valve body, torsionspring and ball valve are stifled, and A mouthfuls and B mouthfuls are set to valve body left and right ends and internal intercommunication, institute
The bulb end for stating ball valve core is mounted on the fluid channel between the A mouth of valve body and B mouthfuls by the way that ball valve is stifled, and ball valve in-core hole
It is axial to be connected to A mouthfuls and B mouthfuls；The other end of ball valve core and push rod are affixed, and push rod is equipped with contact, and push rod and ball valve are equipped between blocking up
Torsionspring.
Further, the nonreturn valve core component includes compressed spring and poppet valve core, and the luffing anti whip device also wraps
Plug C, plug E and plug D are included, valve inner is additionally provided with the C mouth of whole intercommunications, D mouthfuls and E mouthfuls, and C mouthfuls, D mouthfuls and E mouthfuls and A
Mouth, B mouthfuls of intercommunications, C mouthfuls are located at valve body left end, and D mouthfuls and E mouthfuls are respectively positioned on valve body upper end, and wherein C mouthfuls, D mouthfuls and E mouthfuls are separately installed with
Plug C, plug D and plug E, channel where the E mouth of valve body and C mouthfuls of places channel junction are equipped with taper hole, the E mouth place of valve body
The poppet valve core of identical taper is installed, the F mouth being arranged on poppet valve core is connected to the hole C of valve body, one end peace of compressed spring in channel
Inside poppet valve core, the other end is oriented to and is compressed by plug E.
It further, further include balanced valve, amplitude oil cylinder is connected by balanced valve with luffing anti whip device, luffing erosion control
A mouth and B mouthful of the device with intercommunication are hit, the A mouth of luffing anti whip device is connected to the A of reversal valve working chamber mouth, luffing erosion control
The B mouth for hitting device is connected to the V2 of balanced valve mouth, and the C2 mouth of balanced valve is connected to the rodless cavity of amplitude oil cylinder, and amplitude oil cylinder has
Rod cavity pass sequentially through the C1 mouth of balanced valve, V1 mouthfuls be connected to the B of reversal valve working chamber mouth, the P mouth of reversal valve, T mouthfuls respectively with oil
Pump, hydraulic oil container connection.
The utility model has the beneficial effects that：
1, luffing when the utility model can reduce luffing range of cantilever support to maximum angle automatically impacts, and can effectively lock oil
Cylinder movement, improves operating personnel's safety and comfort on platform.2, the utility model is carried out automatic using mechanically and hydraulically combination
Limit has many advantages, such as that using effect is good, reliable performance, compact structure.3, the utility model has been completely free of electrical control skill
The limitation of art can effectively realize luffing range of cantilever support protecting against shock, can be widely popularized to other mechanisms with oil-cylinder variable amplitude.
Detailed description of the invention
Fig. 1 is the overall structure and installation signal of the utility model aerial work platform luffing range of cantilever support impact protection system
Figure；Fig. 2 is the hydraulic schematic diagram of the utility model aerial work platform luffing range of cantilever support impact protection system；
Fig. 3 is the cross section view of luffing anti whip device；
Fig. 4 is the view of push rod mounting surface in luffing anti whip device；
Fig. 5 is the trigger process schematic diagram of luffing anti whip device.
In figure：1- cantilever crane；2- amplitude oil cylinder；3- luffing anti whip device；4- arm rear-end collision plate；5- arm mounting rack；6- balance
Valve；7- derricking cylinder rodless cavity oil pipe；9- reversal valve；10- valve body；11- plug C；12- torsionspring；13- push rod；14- contact；
15- ball valve plug；16- ball valve core；17- compressed spring；18- poppet valve core；19- plug E；20- plug D；21- oil pump.
Specific embodiment
The present invention will be further illustrated below in conjunction with specific embodiments.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation the scope of the utility model.In addition, it should also be understood that, in the content for having read the utility model instruction
Later, those skilled in the art can make various changes or modifications the utility model, and such equivalent forms equally fall within this Shen
It please the appended claims limited range.
The embodiments of the present invention are described in further detail with reference to the accompanying drawing.
As shown in Figs 1-4, a kind of aerial work platform luffing range of cantilever support impact protection system, including cantilever crane 1 and for driving
The amplitude oil cylinder 2 that cantilever crane 1 rises and falls further includes luffing anti whip device 3, is connected with the rodless cavity of amplitude oil cylinder 2, the luffing
Anti whip device 3 includes flow-regulating components and nonreturn valve core component, and cantilever crane 1 triggers flow and adjusts during 1 raising of cantilever crane
Element manipulation is to gradually reduce the flow entered in 2 rodless cavity of amplitude oil cylinder；It is fallen after rise by maximum change angle just in cantilever crane 1
Phase, the oil pressure of 2 rodless cavity of amplitude oil cylinder forces nonreturn valve core component to be opened, smooth to promote amplitude oil cylinder 2 to fall after rise.
The luffing anti whip device 3 further includes rotating element, is connected with flow-regulating components, in 1 raising mistake of cantilever crane
Cantilever crane 1 touches rotating element and rotating element rotation is enabled to trigger flow-regulating components work then gradually to subtract in journey
The small flow into 2 rodless cavity of amplitude oil cylinder.
The luffing anti whip device 3 further includes the fluid channel one with A mouthfuls and B mouthfuls intercommunications, is connected to A mouthfuls and B mouthfuls
And the fluid channel two in parallel with fluid channel one, flow-regulating components are set on the fluid channel, nonreturn valve core component is set
On fluid channel two.
Aerial work platform luffing range of cantilever support impact protection system further includes the reversal valve 9 being connected with oil sources, the luffing oil
The rodless cavity of cylinder 2 is connected by luffing anti whip device 3 with reversal valve 9, and the rod chamber of amplitude oil cylinder 2 is connected with reversal valve 9.
Aerial work platform luffing range of cantilever support impact protection system further includes the arm rear-end collision plate 4 for being mounted on 1 arm tail of cantilever crane, is used for
It is in contact with the rotating element.
Aerial work platform luffing range of cantilever support impact protection system further includes arm mounting rack 5, and luffing anti whip device 3 is mounted on
On arm mounting rack 5.
One end of the amplitude oil cylinder 2 and cantilever crane 1 is hinged, the other end and the arm mounting rack 5 are hinged.
As shown in figure 3, the rotating element includes push rod 13 and contact 14, the flow-regulating components include ball valve core
16, the luffing anti whip device 3 further includes stifled 15, A mouthfuls and B mouthfuls of valve body 10, torsionspring 12 and ball valve and is set to 10 left side of valve body
The bulb end of right both ends and internal intercommunication, the ball valve core 16 is mounted between the A mouth of valve body 10 and B mouthfuls by ball valve stifled 15
On fluid channel, and the axial direction of 16 inner hole of ball valve core is connected to A mouthfuls and B mouthfuls；The other end of ball valve core 16 and push rod 13 are affixed, push away
Bar 13 is equipped with contact 14, is equipped with torsionspring 12 between push rod 13 and ball valve stifled 15.
The nonreturn valve core component includes compressed spring 17 and poppet valve core 18, and the luffing anti whip device 3 further includes blocking up
Head C11, plug E19 and plug D20, be additionally provided with inside valve body 10 whole intercommunications C mouth, D mouthfuls and E mouthfuls, and C mouthfuls, D mouthfuls and E mouthfuls
With A mouthfuls, B mouthfuls of intercommunications, C mouthfuls are located at 10 left end of valve body, and D mouthfuls and E mouthfuls are respectively positioned on 10 upper end of valve body, wherein C mouthfuls, D mouthfuls and E mouthfuls of difference
Plug C11, plug D20 and plug E19 are installed, channel where the E mouth of valve body 10 and C mouthfuls of places channel junction are equipped with cone
Hole, valve body（10）E mouth where in channel the identical taper of installation poppet valve core 18, the F mouth and valve body 10 being arranged on poppet valve core 18
The connection of the hole C, one end of compressed spring 17 is mounted on inside poppet valve core 18, and the other end is oriented to and is compressed by plug E19.
It further include balanced valve 6, amplitude oil cylinder 2 is connected by balanced valve 6 with luffing anti whip device 3, luffing protecting against shock dress
The 3 A mouth with intercommunication and B mouthfuls are set, the A mouth of luffing anti whip device 3 is connected to the A mouth of 9 working chamber of reversal valve, luffing protecting against shock
The B mouth of device 3 is connected to the V2 of balanced valve 6 mouth, and the C2 mouth of balanced valve 6 is connected to the rodless cavity of amplitude oil cylinder 2, amplitude oil cylinder 2
Rod chamber pass sequentially through the C1 mouth of balanced valve 6, V1 mouthfuls be connected to the B mouth of 9 working chamber of reversal valve, the P mouth of reversal valve 9, T mouthfuls points
It is not connected to oil pump 21, hydraulic oil container.Oil pump 21 is connected to reversal valve 9, provides hydraulic power source for whole system.
Wherein, C1, C2 mouth of balanced valve 6 are outlet, and V1, V2 mouthfuls are import；The P mouth of reversal valve 9 is pressure port, and T mouthfuls are
Oil return opening.
Above-mentioned aerial work platform is with the working principle of luffing range of cantilever support impact protection system：
When reversal valve 9 switches to left position：Pressure oil passes sequentially through luffing anti whip device 3, balanced valve 6 enters amplitude oil cylinder
2 rodless cavity promotes the gradually luffing raising of cantilever crane 1（Such as Fig. 5）.When cantilever crane 1 is raised to the-a ° of angles of θ of setting up to rising, arm rear-end collision
Plate 4 starts to contact with contact 14.Cantilever crane 1 continues raising, and arm rear-end collision plate 4 pushes contact 14 and push rod 13 that ball valve core 16 is revolved
Turn, so that ball valve core 16 is gradually reduced with A mouthfuls, the B mouthfuls of openings being connected to, so that into 2 rodless cavity of amplitude oil cylinder
Flow is gradually reduced, i.e. the luffing lifting velocity of cantilever crane 1 gradually reduces automatically.Until cantilever crane 1 rises and rises to 2 stroke pair of amplitude oil cylinder
When the extreme angles θ answered, ball valve core 16 is completely closed with A mouthfuls, the B mouthfuls of openings being connected to, and the lifting velocity of cantilever crane 1 is 0 at this time.It should
Process avoids cantilever crane and acts speed rapid drawdown when rising to maximum angle.Balanced valve 6 is arranged in luffing anti whip device 3 and amplitude oil cylinder
Between 2, effectively it can lock in the case where 2 oil pipe of amplitude oil cylinder fails and amplitude oil cylinder is avoided to fall after rise.
When reversal valve 9 switches to right position：Pressure oil enters the rod chamber of amplitude oil cylinder 2 by balanced valve 6, promotes luffing oily
2 rodless cavity oil return of cylinder and 1 luffing of cantilever crane are fallen after rise.Contact 14 is integrated with push rod 13, is equipped with and is turned round between push rod 13 and ball valve stifled 15
Turn spring 12, torsionspring 12 falls 14 follower arm rear-end collision plate 4 of contact after rise.Cantilever crane 1 fallen after rise by maximum change angle θ to less than
During θ-a angle, arm rear-end collision plate 4 with the positional relationship of contact 14 with when aforementioned 1 raising of cantilever crane the case where corresponding, ball valve core 16
The case where with the openings of sizes of A mouthfuls, B mouthfuls connections with when aforementioned 1 raising of cantilever crane, is corresponding.1 luffing of cantilever crane is opened by maximum change angle θ
When falling stage beginning, the opening of ball valve core 16 is less than normal, and 2 rodless cavity return pressure of amplitude oil cylinder is allowed to overcome compressed spring
17, and then push poppet valve core 18 open.A part of 2 rodless cavity oil return of amplitude oil cylinder flows directly out A mouthfuls through the opening of ball valve core 16, separately
A part passes sequentially through the opening of poppet valve core 18, the hole F, the hole D finally flow out A mouthfuls, avoids the initial oil return of 2 rodless cavity of amplitude oil cylinder
Speed slows down.After the initial stage that cantilever crane 1 is fallen after rise, the opening that ball valve core 16 is connected to A mouthfuls, B mouthfuls increases, 2 nothing of amplitude oil cylinder
Rod cavity return pressure cannot overcome compressed spring 17, retract poppet valve core 18 and close, and 2 rodless cavity oil return of amplitude oil cylinder passes through completely
The opening of ball valve core 16 flows out A mouthfuls.It ensure that the fall velocity of luffing falling overall process is unaffected.
Claims (9)
1. a kind of aerial work platform luffing range of cantilever support impact protection system, including cantilever crane（1）, for driving cantilever crane（1）It rises and falls
Amplitude oil cylinder（2）With luffing anti whip device（3）, which is characterized in that the luffing anti whip device（3）With amplitude oil cylinder
（2）Rodless cavity connection, the luffing anti whip device（3）Including flow-regulating components and nonreturn valve core component, in cantilever crane（1）
Cantilever crane during raising（1）Triggering flow-regulating components work is then gradually reduced into amplitude oil cylinder（2）Stream in rodless cavity
Amount；In cantilever crane（1）Falling initial stage, amplitude oil cylinder by maximum change angle（2）The oil pressure of rodless cavity forces nonreturn valve core group
Part is opened, to promote amplitude oil cylinder（2）It falls after rise smooth.
2. aerial work platform according to claim 1 luffing range of cantilever support impact protection system, which is characterized in that the luffing
Anti whip device（3）Further include rotating element, be connected with flow-regulating components, in cantilever crane（1）Cantilever crane during raising（1）Touching
Encounter rotating element and rotating element rotation is enabled to then to trigger flow-regulating components work and enters luffing to be gradually reduced
Oil cylinder（2）Flow in rodless cavity.
3. aerial work platform according to claim 1 luffing range of cantilever support impact protection system, which is characterized in that the cantilever crane
Luffing impact protection system further includes the reversal valve being connected with oil sources（9）, the amplitude oil cylinder（2）Rodless cavity pass through luffing erosion control
Hit device（3）With reversal valve（9）It is connected, amplitude oil cylinder（2）Rod chamber and reversal valve（9）It is connected.
4. aerial work platform according to claim 2 luffing range of cantilever support impact protection system, which is characterized in that luffing range of cantilever support
Impact protection system further includes being mounted on cantilever crane（1）The arm rear-end collision plate of arm tail（4）, for being in contact with the rotating element.
5. aerial work platform according to claim 1 luffing range of cantilever support impact protection system, which is characterized in that luffing range of cantilever support
Impact protection system further includes arm mounting rack（5）, luffing anti whip device（3）It is mounted on arm mounting rack（5）On.
6. aerial work platform according to claim 5 luffing range of cantilever support impact protection system, which is characterized in that the luffing
Oil cylinder（2）One end and cantilever crane（1）Hingedly, the other end and the arm mounting rack（5）Hingedly.
7. aerial work platform according to claim 2 luffing range of cantilever support impact protection system, which is characterized in that the rotation
Element includes push rod（13）And contact（14）, the flow-regulating components include ball valve core（16）, the luffing anti whip device
（3）It further include valve body（10）, torsionspring（12）It is stifled with ball valve（15）, A mouthfuls and B mouthfuls are set to valve body（10）Left and right ends and inside
Intercommunication, the ball valve core（16）Bulb end it is stifled by ball valve（15）It is mounted on valve body（10）A mouth and B mouthfuls between fluid it is logical
On road, and ball valve core（16）The axial direction of inner hole is connected to A mouthfuls and B mouthfuls；Ball valve core（16）The other end and push rod（13）It is affixed, it pushes away
Bar（13）It is equipped with contact（14）, push rod（13）It is stifled with ball valve（15）Between be equipped with torsionspring（12）.
8. aerial work platform according to claim 7 luffing range of cantilever support impact protection system, which is characterized in that described unidirectional
Core assembly includes compressed spring（17）And poppet valve core（18）, the luffing anti whip device（3）It further include plug C（11）, it is stifled
Head E（19）With plug D（20）, valve body（10）Inside is additionally provided with the C mouth of whole intercommunications, D mouthfuls and E mouthfuls, and C mouthfuls, D mouthfuls and E mouthfuls and A
Mouth, B mouthfuls of intercommunications, C mouthfuls are located at valve body（10）Left end, D mouthfuls and E mouthfuls are respectively positioned on valve body（10）Upper end, wherein C mouthfuls, D mouthfuls and E mouthfuls point
Plug C is not installed（11）, plug D（20）With plug E（19）, valve body（10）E mouth where channel where channel and C mouthful join
Place is equipped with taper hole, valve body（10）E mouth where the poppet valve core of identical taper is installed in channel（18）, poppet valve core（18）Upper setting
F mouthfuls and valve body（10）The hole C connection, compressed spring（17）One end be mounted on poppet valve core（18）Inside, the other end pass through plug E
（19）It is oriented to and compresses.
9. aerial work platform according to claim 1 luffing range of cantilever support impact protection system, which is characterized in that luffing range of cantilever support
Impact protection system further includes balanced valve（6）, amplitude oil cylinder（2）Pass through balanced valve（6）With luffing anti whip device（3）It is connected, becomes
Width anti whip device（3）A mouth with intercommunication and B mouthfuls, luffing anti whip device（3）A mouth and reversal valve（9）The A of working chamber
Mouth connection, luffing anti whip device（3）B mouth and balanced valve（6）V2 mouth connection, balanced valve（6）C2 mouth and amplitude oil cylinder
（2）Rodless cavity connection, amplitude oil cylinder（2）Rod chamber pass sequentially through balanced valve（6）C1 mouth, V1 mouthfuls and reversal valve（9）Work
Make the B mouth connection of chamber, reversal valve（9）P mouth, T mouthfuls respectively with oil pump（21）, hydraulic oil container connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721877775.2U CN208135829U (en) | 2017-12-28 | 2017-12-28 | A kind of aerial work platform luffing range of cantilever support impact protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721877775.2U CN208135829U (en) | 2017-12-28 | 2017-12-28 | A kind of aerial work platform luffing range of cantilever support impact protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208135829U true CN208135829U (en) | 2018-11-23 |
Family
ID=64283465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721877775.2U Withdrawn - After Issue CN208135829U (en) | 2017-12-28 | 2017-12-28 | A kind of aerial work platform luffing range of cantilever support impact protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208135829U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107963595A (en) * | 2017-12-28 | 2018-04-27 | 徐州海伦哲专用车辆股份有限公司 | A kind of aerial work platform luffing range of cantilever support protecting against shock system |
-
2017
- 2017-12-28 CN CN201721877775.2U patent/CN208135829U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107963595A (en) * | 2017-12-28 | 2018-04-27 | 徐州海伦哲专用车辆股份有限公司 | A kind of aerial work platform luffing range of cantilever support protecting against shock system |
| CN107963595B (en) * | 2017-12-28 | 2023-11-28 | 徐州海伦哲专用车辆股份有限公司 | Arm support amplitude-changing anti-impact system for aerial work platform |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20181123 Effective date of abandoning: 20231128 |