CN208071181U - The winch control system and crane super lifting mechanism of crane super lifting mechanism - Google Patents
The winch control system and crane super lifting mechanism of crane super lifting mechanism Download PDFInfo
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- CN208071181U CN208071181U CN201820444169.XU CN201820444169U CN208071181U CN 208071181 U CN208071181 U CN 208071181U CN 201820444169 U CN201820444169 U CN 201820444169U CN 208071181 U CN208071181 U CN 208071181U
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- 239000012530 fluid Substances 0.000 claims abstract description 107
- 239000002828 fuel tank Substances 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 239000002243 precursor Substances 0.000 claims description 16
- 230000005611 electricity Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 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
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model gives a kind of winch control system of crane super lifting mechanism；First hydraulic fluid port of main reversing valve is connected to oil sources, and the second hydraulic fluid port is connected to fuel tank, and third hydraulic fluid port and the 4th hydraulic fluid port are connected to motor both ends, and balanced valve is housed between the 4th hydraulic fluid port and motor；First shuttle valve oil inlet is connected to third hydraulic fluid port and the 4th hydraulic fluid port, the oil inlet of third shuttle valve is connected to the first shuttle valve oil outlet and second solenoid valve, the oil outlet of third shuttle valve is connected to brake, and the 5th hydraulic fluid port of second solenoid valve is connected to oil sources, and the 6th hydraulic fluid port of second solenoid valve is connected to fuel tank；Second shuttle valve controls the connection of balanced valve.To a kind of crane super lifting mechanism has also been gone out, setting-up holder is hinged on crane arm the utility model, and setting-up oscillating oil cylinder controls the swing of setting-up holder, and super-starting balance weight is arranged in the principal arm tail portion of crane arm；Setting-up elevator is controlled by above-mentioned system, and super-starting balance weight is arranged in crane arm tail portion.This crane super lifting mechanism lifts crane is in, long-armed hang oneself carries performance.
Description
Technical field
The utility model is related to volumes when a kind of a kind of hydraulic control system of elevator, more particularly to crane super lifting operation
Raise hydraulic control system.
The utility model further relates to a kind of crane super lifting mechanism.
Background technology
Autocrane is widely used in engineering construction field, autocrane include mainly lifting mechanism, jib lubbing mechanism,
Swing mechanism, crane arm and automobile chassis etc., crane arm are made of more joint arms, and crane arm is equipped with master winch and secondary elevator,
Master winch and secondary elevator are just the same on hydraulic principle, and sole difference is that master winch accompanies movable pulley more in the addition of crane arm front end
Group can promote more weights.Master winch is hung much, but speed is slow；Secondary elevator hangs few, but speed is fast.
At present in mobilecrane, long-armed in crane, long-armed lifting performance has become crane in market
The upper most important embodiment of competition becomes lifting function in market so how to study the raising of the lifting performance under identical parameters
The necessary condition of existence, herein under the premise of, it is exactly to increase the preferred option of lifting performance that setting-up mechanism is added on crane, existing
There is technology mainly to use two schemes：1, in addition add super lifting device outside crane arm, super lifting device generally comprise setting-up elevator,
Setting-up holder, super-starting balance weight, setting-up holder are hinged on the crane arm of crane, and setting-up holder oscillating oil cylinder controls setting-up holder
Swing, setting-up holder oscillating oil cylinder can be arranged outside crane arm or be hidden in inside crane arm, the steel wire of setting-up elevator
Rope is fixed around the end of setting-up holder and the outermost joint arm stem of crane arm, and the principal arm tail in crane arm is arranged in super-starting balance weight
Portion；But excessive external equipment is added in above method needs on crane arm, and in addition its setting-up load is limited, cannot fully meet
Demand.2, setting-up holder is fixed on the crane arm of crane, and the top of setting-up holder, steel wire rope two are directly bypassed with steel wire
End is separately fixed at crane arm both ends, but this mode steel wire rope when flexural buckling occurs for crane arm is easily broken off, and safety is poor.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of reasonable design, crane super lifting machines easy to use
The winch control system of structure.
Technical problem to be solved in the utility model is also to provide a kind of for reducing setting-up cost, increasing setting-up load
Heavy-duty machine setting-up mechanism.
In order to solve the above technical problems, the utility model provides a kind of winch control system of crane super lifting mechanism；
Including main reversing valve, the first solenoid valve, second solenoid valve, third solenoid valve, the first shuttle valve, the second shuttle valve, third
Shuttle valve, precursor overflow valve, balanced valve and individual event orifice valve, main reversing valve include the first hydraulic fluid port, the second hydraulic fluid port, third hydraulic fluid port, the
Four hydraulic fluid ports, second solenoid valve include the 5th hydraulic fluid port, the 6th hydraulic fluid port, the 7th hydraulic fluid port, the 8th hydraulic fluid port, and precursor overflow valve includes the 9th oil
Mouth, the tenth hydraulic fluid port and the 11st hydraulic fluid port；
First hydraulic fluid port of main reversing valve is connected to the first oil sources, and the second hydraulic fluid port is connected to fuel tank, third hydraulic fluid port and the 4th oil
Mouth is connected to hoist motor both ends respectively, and balanced valve is equipped on the pipeline between the 4th hydraulic fluid port and hoist motor；
Pipeline connection between the oil inlet and hoist motor and the third hydraulic fluid port of main reversing valve of first shuttle valve, the first shuttle
Pipeline connection between another oil inlet and balanced valve of valve and the 4th hydraulic fluid port of main reversing valve, the oil outlet of the first shuttle valve and
One oil inlet of three shuttle valves is connected to, another oil inlet of third shuttle valve is connected to the 8th hydraulic fluid port of second solenoid valve, third
The oil outlet of shuttle valve is connected to by individual event orifice valve with brake, and the 5th hydraulic fluid port of second solenoid valve is connected to the second oil sources, the
6th hydraulic fluid port of two solenoid valves is connected to fuel tank；
Pipeline connection between the oil inlet and hoist motor and the third hydraulic fluid port of main reversing valve of second shuttle valve, the second shuttle
Another oil inlet of valve is connected to by third solenoid valve with the second oil sources, the oil outlet of the second shuttle valve and the control oil of balanced valve
Mouth connection；
Pipeline connection between the 9th hydraulic fluid port and balanced valve and the 4th hydraulic fluid port of main reversing valve of precursor overflow valve, guide's overflow
11st hydraulic fluid port of pipeline connection between the tenth hydraulic fluid port and the leakage oil return opening and fuel tank of hoist motor of valve, precursor overflow valve is logical
The first solenoid valve is crossed to be connected to fuel tank.
After such structure, setting-up mechanism may be implemented in work in the winch control system of crane super lifting mechanism
Flexible operating promotes the safety of setting-up mechanism.
Pass through first between the 4th hydraulic fluid port and fuel tank of the main reversing valve of the winch control system of this crane super lifting mechanism
Overflow valve is connected to；It is connected to by the second overflow valve between the third hydraulic fluid port and fuel tank of the main reversing valve.
In order to solve the above technical problems, the utility model additionally provides a kind of crane super lifting mechanism, including setting-up elevator,
Setting-up holder, super-starting balance weight, setting-up holder are hinged on the crane arm of crane, and setting-up holder oscillating oil cylinder controls setting-up holder
Swing, the steel wire rope of setting-up elevator fixes around the end of setting-up holder and the outermost joint arm stem of crane arm, and setting-up is matched
It resets and sets in the principal arm tail portion of crane arm；
Setting-up elevator is controlled by the winch control system of above-mentioned crane super lifting mechanism, and super-starting balance weight passes through weight balancing oil cylinder
It is arranged in the principal arm tail portion of crane arm, the piston rod of weight balancing oil cylinder is stretched out to far from setting-up holder orientation.
Preferably, master winch or secondary elevator of the setting-up elevator using crane itself.
After such structure, using the existing elevator of crane as the setting-up elevator of setting-up mechanism, existing elevator steel
The cost of setting-up greatly reduces as setting-up drawstring in cord；This crane super lifting mechanism on original hydraulic device not
It needs substantially to change, it is only necessary to add some solenoid valves, precursor overflow valve and shuttle valve and can be achieved with, move after counterweight and combine crane arm
The utilization of setting-up greatly improves lift heavy performance long-armed, long-armed in crane, and elevator not as setting-up when using, volume
Raising can work normally.
This crane super lifting mechanism significantly reduces cost, using hoisting mechanism as setting-up elevator, in conjunction with being moved after counterweight
Structure, lift crane is long-armed in, long-armed hang oneself carries performance.
Description of the drawings
Fig. 1 is the hydraulic schematic diagram of the winch control system embodiment of this crane super lifting mechanism.
Fig. 2 is the schematic diagram of the winch control system embodiment main reversing valve of this crane super lifting mechanism.
Fig. 3 is the schematic diagram of the winch control system embodiment second solenoid valve of this crane super lifting mechanism.
Fig. 4 is the structural schematic diagram of this crane super lifting mechanism embodiment.
Fig. 5 is the hydraulic principle of this crane super lifting mechanism embodiment control setting-up holder and setting-up holder oscillating oil cylinder
Figure.
Specific implementation mode
As shown in Figures 1 to 3
The winch control system of this crane super lifting mechanism include main reversing valve 6, the first solenoid valve 8, second solenoid valve 9,
Third solenoid valve 10, the first shuttle valve 5, the second shuttle valve 12, third shuttle valve 13, precursor overflow valve 11, balanced valve 4 and individual event orifice valve
3。
Main reversing valve 6 includes the first hydraulic fluid port P1, the second hydraulic fluid port T1, third hydraulic fluid port A1, the 4th hydraulic fluid port B1, second solenoid valve 9
Including the 5th hydraulic fluid port P2, the 6th hydraulic fluid port T2, the 7th hydraulic fluid port A2, the 8th hydraulic fluid port B2, precursor overflow valve 11 includes the 9th hydraulic fluid port, the tenth
Hydraulic fluid port and the 11st hydraulic fluid port.
First hydraulic fluid port P1 of main reversing valve 6 is connected to the first oil sources, and the second hydraulic fluid port T1 is connected to fuel tank 7, third hydraulic fluid port A1
It is connect with hoist motor 2, the 4th hydraulic fluid port B1 is connect by balanced valve 4 with hoist motor 2.
It is connected to by the first overflow valve between the 4th hydraulic fluid port B1 and fuel tank 7 of main reversing valve 6；The third oil of main reversing valve 6
It is connected to by the second overflow valve between mouth A1 and fuel tank 7.
Pipeline connection between the oil inlet and hoist motor 2 of first shuttle valve 5 and the third hydraulic fluid port A1 of main reversing valve 6,
Pipeline connection between another oil inlet and balanced valve 4 and the 4th hydraulic fluid port B1 of main reversing valve 6 of first shuttle valve 5, the first shuttle valve 5
Oil outlet be connected to an oil inlet of third shuttle valve 13, another oil inlet of third shuttle valve 13 and second solenoid valve 9
8th hydraulic fluid port B2 connection, the oil outlet of third shuttle valve 13 are connected to by individual event orifice valve 3 with brake 1, and the of second solenoid valve 9
Five hydraulic fluid port P2 are connected to the second oil sources, and the 6th hydraulic fluid port T2 of second solenoid valve 9 is connected to fuel tank 7；
Pipeline connection between the oil inlet and hoist motor 2 of second shuttle valve 12 and the third hydraulic fluid port A1 of main reversing valve 6,
Another oil inlet of second shuttle valve 12 is connected to by third solenoid valve 10 with the second oil sources, the oil outlet of the second shuttle valve 12 with it is flat
The control port connection of weighing apparatus valve 4；
Pipeline connection between the 9th hydraulic fluid port and balanced valve 4 and the 4th hydraulic fluid port B1 of main reversing valve 6 of precursor overflow valve 11, first
Pipeline connection between the tenth hydraulic fluid port of overflow valve 11 and the leakage oil return opening and fuel tank 7 of hoist motor 2 is led, precursor overflow valve 11
11st hydraulic fluid port is connected to by the first solenoid valve 8 with fuel tank 7.
When the original state of main reversing valve 6, the first hydraulic fluid port P1 is in disconnection state, the second hydraulic fluid port T1 and third hydraulic fluid port A1 and
4th hydraulic fluid port B1 connections；When the ends the b oil inlet of main reversing valve 6, main reversing valve 6 is operated in right end, at this time the first hydraulic fluid port P1 and the 4th
Hydraulic fluid port B1 connections, the second hydraulic fluid port T1 are connected to third hydraulic fluid port A1；When the ends a oil inlet of main reversing valve 6, main reversing valve 6 is operated in a left side
End, the first hydraulic fluid port P1 is connected to third hydraulic fluid port A1 at this time, and the second hydraulic fluid port T1 is connected to the 4th hydraulic fluid port B1.
When the original state of the first solenoid valve 8, internal conducting；When the ends Y1 of first solenoid valve 8 obtain electric, the first solenoid valve
8 inside disconnect.
When the original state of second solenoid valve 9, the 5th hydraulic fluid port P2 and the 7th hydraulic fluid port A2 connections, the oil of the 6th hydraulic fluid port T2 and the 8th
Mouth B2 connections；When the ends Y2 of second solenoid valve 9 obtain electric, the 5th hydraulic fluid port P2 and the 8th hydraulic fluid port B2 connections, the 6th hydraulic fluid port T2 and the 7th
Hydraulic fluid port A2 connections.
When the original state of third solenoid valve 10, internal conducting；When the ends Y3 of third solenoid valve 10 obtain electric, third electromagnetism
10 inside of valve disconnects.
The structure of this crane super lifting mechanism is specifically described in conjunction with the winch control system of above-mentioned crane super lifting mechanism.
As shown in figure 4, this crane super lifting mechanism includes setting-up elevator, setting-up holder 17, super-starting balance weight 21, setting-up holder
Oscillating oil cylinder 18 and two weight balancing oil cylinders 22.
Setting-up holder 17 is hinged on the crane arm 16 of crane, and setting-up holder oscillating oil cylinder 18 controls setting-up holder 17
It swings, setting-up holder 17 is rocked between crane arm 16 when working and levels off to 90 °, and 17 top of setting-up holder is equipped with and setting-up is rolled up
The pulley of steel wire rope cooperation is raised, setting-up elevator uses one of master winch 20 or secondary elevator 19 of crane itself (such as
When fruit crane utilizes 20 lift heavy object of master winch, the secondary elevator 19 of crane is setting-up elevator；Conversely, master winch 20 is setting-up
Elevator), setting-up elevator is controlled by the winch control system of crane super lifting mechanism, and the steel wire rope of setting-up elevator bypasses setting-up holder
17 end and the outermost joint arm stem of crane arm 16 are fixed, and super-starting balance weight 21 is arranged by weight balancing oil cylinder 22 in crane arm 16
Principal arm tail portion, the piston rod of weight balancing oil cylinder 22 stretches out to far from 17 direction of setting-up holder.
As shown in figure 5, two weight balancing oil cylinders 22 are connected to by the 4th solenoid valve 14 with oil sources, (super-starting balance weight 21 passes through guide rail
It is connect with turntable, the stretching of 22 control setting-up oil cylinders of weight balancing oil cylinder and retraction), setting-up holder oscillating oil cylinder 18 passes through the 5th electricity
Magnet valve 15 is connect (setting-up holder oscillating oil cylinder 18 is hidden in inside crane arm 16 in Fig. 4) with oil sources.
When this crane super lifting mechanism uses；
1) first wire rope handling fixes the cable wire end of setting-up elevator (it is setting-up elevator that secondary elevator 19 is set in the present embodiment)
It fixes in 16 arm head front end of telescopic crane arm, and is powered to the ends Y7 of the 5th solenoid valve 15 of setting-up holder 17, surpass at this time
It plays holder oscillating oil cylinder 18 to stretch out, oil cylinder and setting-up mechanism are in contact by gear (or the kinds of drive such as chain), are driven super
Holder 17 is played to rotate, until the ends Y7 that setting-up holder 17 stops perpendicular to crane arm 16 the 5th solenoid valve 15 are powered, then setting-up
Hoisting rope is by the pulley on setting-up holder 17, at this time by setting-up holder 17, the steel wire rope of setting-up elevator and arm shape
At a triangular structure.
2) crane arm 16 stretches out, since the front end of setting-up elevator steel wire rope is already fixed on the arm head of front end, so rising
Weighing arm 16 will necessarily be equal to the braking of setting-up elevator speed reducer while stretching by the pulling force of setting-up elevator steel wire rope, this pulling force
Power necessarily damages any one structural member in above-mentioned triangular structure if not opening brake 1；
The hydraulic pressure of the winch control system of crane super lifting mechanism is handled：The ends second solenoid valve 9Y2 are made to obtain electric, pressure oil
Third shuttle valve 13 is withstood by the ends second solenoid valve 9Y2, is finally acted on brake 1 by individual event orifice valve 3, system is opened
Dynamic device 1, and the ends third solenoid valve 10Y3 dead electricity simultaneously, pressure oil act on 4 control port end of balanced valve, open balanced valve 4, allow
Hoist motor 2, speed reducer are extending weighing arm 16, the steel wire rope of setting-up elevator is not being braked at this time all in quick condition
The active force of device 1, crane arm 16 can freely stretch out, the position wanted until reaching operator.
3) suspension hook of lift heavy, master winch 20 is used for lift heavy, and the weight of weight acts on the front end of crane arm 16, at this time setting-up
Elevator (secondary elevator 19) is due to no any operation, so under the action of the front end of setting-up elevator speed reducer and crane arm 16,
Rope capacity is constant, and the triangular structure formed by setting-up elevator steel wire rope, setting-up holder 17, crane arm 16, which can mitigate, hangs
Then the downwarp of arm gives the 4th ends solenoid valve 14Y4 to be powered again, two oil cylinders elongation of control super-starting balance weight 21 is connected to counterweight
It is moved after super-starting balance weight 21 on oil cylinder 22, increases the torque of super-starting balance weight 21,16 front end lift heavy ability of inevitable crane arm increases.
4) crane arm 16 is retracted, if according to conventional retraction, setting-up elevator rotary speed is more than the speed that crane arm 16 bounces back
Degree, the triangular structure formed by setting-up elevator steel wire rope, setting-up holder 17, crane arm 16 will be damaged；If setting-up elevator
Rotary speed is less than the speed that crane arm 16 bounces back, then the steel wire rope being wrapped in setting-up elevator will disorderly be wound (disorder cable).
Processing mode：The ends the b oil inlet of main reversing valve 6, main reversing valve 6 are operated in right end, allow the first ends solenoid valve 8Y1 at this time
Dead electricity, setting-up elevator motor 2 rotates always under the action of main pump oil sources, and pressure has arrived 5MPa, passes through precursor overflow valve
11 overflows protect the triangular structure formed by setting-up elevator steel wire rope, setting-up holder 17, crane arm 16.Setting-up elevator is revolved
The control that the speed turned passes through flow is that disorder cable does not destroy triangular structure yet, has reached the mesh of the retraction control of crane arm 16
's.
Finally illustrate normal operating conditions of the secondary elevator not when serving as setting-up elevator, winding lifting：First solenoid valve 8Y1
Hold electric, the no longer overflow of precursor overflow valve 11, but by the first overflow valve overflow of main reversing valve 6, elevator can be just at this time
Often establish pressure and lift heavy；Elevator falls：The ends second solenoid valve 9Y2 dead electricity, the ends third solenoid valve 10Y3 obtain electric, secondary volume at this time
Raising normally to transfer.
Above-described is only a kind of embodiment of the utility model, it is noted that for the ordinary skill of this field
For personnel, without departing from the principle of this utility model, several variations and modifications can also be made, these also should be regarded as
Belong to the scope of protection of the utility model.
Claims (4)
1. a kind of winch control system of crane super lifting mechanism, it is characterized in that：
Including main reversing valve, the first solenoid valve, second solenoid valve, third solenoid valve, the first shuttle valve, the second shuttle valve, third shuttle valve,
Precursor overflow valve, balanced valve and individual event orifice valve, main reversing valve include the first hydraulic fluid port, the second hydraulic fluid port, third hydraulic fluid port, the 4th oil
Mouthful, second solenoid valve include the 5th hydraulic fluid port, the 6th hydraulic fluid port, the 7th hydraulic fluid port, the 8th hydraulic fluid port, precursor overflow valve include the 9th hydraulic fluid port,
Tenth hydraulic fluid port and the 11st hydraulic fluid port；
First hydraulic fluid port of main reversing valve is connected to the first oil sources, and the second hydraulic fluid port is connected to fuel tank, third hydraulic fluid port and the 4th hydraulic fluid port point
It is not connected to hoist motor both ends, balanced valve is installed on the pipeline between the 4th hydraulic fluid port and hoist motor；
Pipeline connection between the oil inlet and hoist motor and the third hydraulic fluid port of main reversing valve of first shuttle valve, the first shuttle valve
Pipeline connection between another oil inlet and the 4th hydraulic fluid port of balanced valve and main reversing valve, oil outlet and the third shuttle of the first shuttle valve
One oil inlet of valve is connected to, another oil inlet of third shuttle valve is connected to the 8th hydraulic fluid port of second solenoid valve, third shuttle valve
Oil outlet be connected to brake by individual event orifice valve, the 5th hydraulic fluid port of second solenoid valve is connected to the second oil sources, second electricity
6th hydraulic fluid port of magnet valve is connected to fuel tank；
Pipeline connection between the oil inlet and hoist motor and the third hydraulic fluid port of main reversing valve of second shuttle valve, the second shuttle valve
Another oil inlet is connected to by third solenoid valve with the second oil sources, and the control port of the oil outlet and balanced valve of the second shuttle valve connects
It is logical；
Pipeline connection between the 9th hydraulic fluid port and balanced valve and the 4th hydraulic fluid port of main reversing valve of precursor overflow valve, precursor overflow valve
11st hydraulic fluid port of pipeline connection between the tenth hydraulic fluid port and the leakage oil return opening and fuel tank of hoist motor, precursor overflow valve passes through
One solenoid valve is connected to fuel tank.
2. the winch control system of crane super lifting mechanism according to claim 1, it is characterized in that：
It is connected to by the first overflow valve between the 4th hydraulic fluid port and fuel tank of the main reversing valve；The third hydraulic fluid port of the main reversing valve
It is connected to by the second overflow valve between fuel tank.
3. a kind of crane super lifting mechanism, including setting-up elevator, setting-up holder, super-starting balance weight, setting-up holder are hinged on crane
Crane arm on, setting-up holder oscillating oil cylinder controls the swing of setting-up holder, and the steel wire rope of setting-up elevator is around setting-up holder
The outermost joint arm stem of end and crane arm is fixed, and super-starting balance weight is arranged in the principal arm tail portion of crane arm, it is characterized in that：
Setting-up elevator is controlled by the winch control system of the crane super lifting mechanism described in the claims 1 or 2, super-starting balance weight
It is arranged in the principal arm tail portion of crane arm by weight balancing oil cylinder, the piston rod of weight balancing oil cylinder is stretched out to far from setting-up holder orientation.
4. crane super lifting mechanism according to claim 3, it is characterized in that：
Master winch or secondary elevator of the setting-up elevator using crane itself.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820444169.XU CN208071181U (en) | 2018-03-30 | 2018-03-30 | The winch control system and crane super lifting mechanism of crane super lifting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820444169.XU CN208071181U (en) | 2018-03-30 | 2018-03-30 | The winch control system and crane super lifting mechanism of crane super lifting mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208071181U true CN208071181U (en) | 2018-11-09 |
Family
ID=64042591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820444169.XU Withdrawn - After Issue CN208071181U (en) | 2018-03-30 | 2018-03-30 | The winch control system and crane super lifting mechanism of crane super lifting mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208071181U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108275595A (en) * | 2018-03-30 | 2018-07-13 | 安徽柳工起重机有限公司 | The winch control system and crane super lifting mechanism of crane super lifting mechanism |
-
2018
- 2018-03-30 CN CN201820444169.XU patent/CN208071181U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108275595A (en) * | 2018-03-30 | 2018-07-13 | 安徽柳工起重机有限公司 | The winch control system and crane super lifting mechanism of crane super lifting mechanism |
| CN108275595B (en) * | 2018-03-30 | 2024-07-02 | 安徽柳工起重机有限公司 | Hoist control system of crane super-lift mechanism and crane super-lift mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20181109 Effective date of abandoning: 20240702 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20181109 Effective date of abandoning: 20240702 |