CN106006501A - Lifting platform and hydraulic lifting system thereof - Google Patents
Lifting platform and hydraulic lifting system thereof Download PDFInfo
- Publication number
- CN106006501A CN106006501A CN201610642388.4A CN201610642388A CN106006501A CN 106006501 A CN106006501 A CN 106006501A CN 201610642388 A CN201610642388 A CN 201610642388A CN 106006501 A CN106006501 A CN 106006501A
- Authority
- CN
- China
- Prior art keywords
- valve
- damping
- hydraulic
- lifting system
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000013016 damping Methods 0.000 claims abstract description 56
- 239000003921 oil Substances 0.000 claims abstract description 30
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 16
- 230000003028 elevating effect Effects 0.000 claims description 48
- 239000002828 fuel tank Substances 0.000 claims description 29
- 230000033228 biological regulation Effects 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 description 18
- 230000035939 shock Effects 0.000 description 6
- 230000005484 gravity Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
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
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
Abstract
The invention discloses a hydraulic lifting system of a lifting platform. The hydraulic lifting system of the lifting platform comprises two lifting oil cylinders which are arranged up and down and two damping adjusting devices which respectively correspond to the two lifting oil cylinders, wherein the two lifting oil cylinders are vertically arranged and piston rods of the two lifting oil cylinders can extend upwards; rodless cavities of the two lifting oil cylinders are communicated with an oil pump; rod cavities of the two lifting oil cylinders are communicated with an oil tank; the rodless cavity of each lifting oil cylinder is communicated with the oil tank through the corresponding damping adjusting device; each damping adjusting device can control the state of connection and disconnection of the rodless cavity of the corresponding lifting oil cylinder and the oil tank; the damping value of hydraulic oil flowing to the oil tank from the rodless cavities of the corresponding lifting oil cylinders can be adjusted. The damping value is adjusted as needed, the speed of the hydraulic oil flowing back to the oil tank is controlled to adjust descending speed, the descending speed is reduced to prevent hydraulic impact and collision of structural parts, and stability and safety are improved. The invention further discloses a lifting platform comprising the hydraulic lifting system.
Description
Technical field
The present invention relates to hoistable platform field, particularly relate to the hydraulic lifting of a kind of hoistable platform
System.Moreover, it relates to a kind of hoistable platform including above-mentioned hydraulic lifting system.
Background technology
Hoistable platform is widely used in multiple field, generally comprises underframe, work platforms and liquid
Pressure jacking system, by the flexible lifting realizing work platforms of hydraulic cylinder in hydraulic lifting system,
Thus reach the purpose of work high above the ground, in order to ensure the stability of product, protection staff is raw
Life safety, work platforms design standard-required is when reaching the position that secondary declines, and decrease speed must
Must halve.During work platforms declines, also in total kilometres 10%-15% but not less than 3.5
Rice, decline should stop, and operator must be again started up declining function, the maximal rate of decline
It is preferably the 50% of normal speed.Hoistable platform relies primarily on gravity decline at present, i.e. passes through gravity
By the hydraulic oil pressure oil sump tank in elevating ram rodless cavity, when reaching the position that secondary declines,
Decrease speed cannot regulate, it is impossible to reach the 50% of normal speed under.Open decline and under
Hydraulic shock clearly and the shock of structural member, stability and safety is there is the when of dropping to
Property is poor.
Therefore, how providing a kind of hydraulic lifting system that can regulate decrease speed is this area
Technical staff is presently required and solves the technical problem that.
Summary of the invention
It is an object of the invention to provide the hydraulic lifting system of a kind of hoistable platform, it is possible under regulation
Reduction of speed degree.It is a further object of the present invention to provide a kind of lifting including above-mentioned hydraulic lifting system
Platform, it is possible to regulation decrease speed, improves safety and stability.
For solving above-mentioned technical problem, the present invention provides the hydraulic lifting system of a kind of hoistable platform
System, including two elevating rams setting up and down, two described elevating rams be all vertically arranged and
Piston rod can protrude upward, and the rodless cavity of two described elevating rams all connects oil pump, has bar
Chamber all connects fuel tank, also includes two damping regulation dresses of the most corresponding two described elevating rams
Putting, the rodless cavity of each described elevating ram is all connected by corresponding described damping adjustment device
Fuel tank, described damping adjustment device can control rodless cavity and the oil of the described elevating ram of correspondence
The on off operating mode of case, and can regulate hydraulic oil by the rodless cavity of corresponding described elevating ram to
The damping value of fuel tank flowing.
Preferably, described damping adjustment device is specially solenoid-operated proportional reversal valve.
Preferably, described solenoid-operated proportional reversal valve is specially bi-bit bi-pass solenoid-operated proportional reversal valve,
Two actuator ports of described bi-bit bi-pass solenoid-operated proportional reversal valve are respectively communicated with described elevating ram
Rodless cavity and fuel tank.
Preferably, described damping adjustment device includes that the hand-operated direction valve being sequentially communicated, damping are changed
To valve and orifice valve.
Preferably, described hand-operated direction valve is specially bi-bit bi-pass hand-operated direction valve, described damping
Reversal valve is specially bi-bit bi-pass damping reversal valve, and the rodless cavity connection of described elevating ram is described
One actuator port of bi-bit bi-pass hand-operated direction valve, described bi-bit bi-pass hand-operated direction valve another
One actuator port of one actuator port connection described bi-bit bi-pass damping reversal valve, described two
Another actuator port of position two-way damping reversal valve connects a working oil of described orifice valve
Mouthful, another actuator port connection fuel tank of described orifice valve.
Preferably, described bi-bit bi-pass damping reversal valve is removably installed in valve plate.
Preferably, it is provided with between described elevating ram and oil pump for preventing hydraulic oil from refluxing
Check valve.
The lower section of the described elevating ram being preferably located at lower section is provided with overweight sensor.
The present invention also provides for a kind of hoistable platform, including work platforms and connect described work and put down
The hydraulic lifting system of platform, described hydraulic lifting system is specially the liquid described in above-mentioned any one
Pressure jacking system.
Preferably, described hoistable platform is specially scissor-type lifting platform.
The hydraulic elevating platform that the present invention provides, including two elevating rams setting up and down, two
Individual elevating ram is all vertically arranged and piston rod can protrude upward, two elevating rams without bar
Chamber all connects oil pump, and rod chamber all connects fuel tank, also includes the most corresponding two elevating rams
Two damping adjustment devices, the rodless cavity of each elevating ram is all by corresponding damping regulation dress
Putting connection fuel tank, damping adjustment device can control rodless cavity and the fuel tank of the elevating ram of correspondence
On off operating mode, and the hydraulic oil rodless cavity by corresponding elevating ram can be regulated to fuel tank stream
Dynamic damping value.When elevating ram stretches out, damping adjustment device disconnects the company of rodless cavity and fuel tank
Logical, when elevating ram is retracted, damping adjustment device connection rodless cavity and fuel tank, simultaneously according to need
Damping value to be adjusted, controls the speed of hydraulic oil flow oil sump tank, and then regulation decrease speed, fall
Low drop-out speed, prevents the shock of hydraulic shock and structural member, improves stability and safety.
The present invention also provides for a kind of hoistable platform including above-mentioned hydraulic lifting system, due to above-mentioned
Hydraulic lifting system has above-mentioned technique effect, and above-mentioned hoistable platform also should have same technology
Effect, is no longer discussed in detail at this.
Accompanying drawing explanation
Fig. 1 is the hydraulic pressure of a kind of detailed description of the invention of hydraulic lifting system provided by the present invention
Schematic diagram；
Fig. 2 is the liquid of the another kind of detailed description of the invention of hydraulic lifting system provided by the present invention
Pressure schematic diagram.
Detailed description of the invention
The core of the present invention is to provide the hydraulic lifting system of a kind of hoistable platform, it is possible under regulation
Reduction of speed degree.Another core of the present invention is to provide a kind of lifting including above-mentioned hydraulic lifting system
Platform, it is possible to regulation decrease speed, improves safety and stability.
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the accompanying drawings
The present invention is described in further detail with detailed description of the invention.
The hydraulic lifting system that the specific embodiment of the invention provides, including setting up and down two
Elevating ram 1, two elevating rams 1 are all vertically arranged and piston rod can protrude upward, and two
The rodless cavity of individual elevating ram 1 all connects oil pump, and rod chamber all connects fuel tank, also includes respectively
Two damping adjustment devices of corresponding two elevating rams 1, the rodless cavity of each elevating ram 1
All by corresponding damping adjustment device connection fuel tank, damping adjustment device can control correspondence
The rodless cavity of elevating ram 1 and the on off operating mode of fuel tank, and hydraulic oil can be regulated by correspondence
The damping value that the rodless cavity of elevating ram 1 flows to fuel tank.
When elevating ram 1 stretches out, damping adjustment device disconnects the connection of rodless cavity and fuel tank, lifts
When oil-lifting jar 1 is retracted, damping adjustment device connection rodless cavity and fuel tank, adjust as required simultaneously
Whole damping value, controls the speed of hydraulic oil flow oil sump tank, and then regulation decrease speed, under reduction
Reduction of speed degree, prevents the shock of hydraulic shock and structural member, improves stability and safety.
Specifically, can be provided with between elevating ram 1 and oil pump for preventing hydraulic oil from refluxing
Check valve.And the lower section of the elevating ram 1 being positioned at lower section is provided with overweight sensor 6.
The parts such as other check valves i.e. overflow valve also can be set and realize the stable operation of hydraulic system, all exist
Within protection scope of the present invention.
Wherein, damping adjustment device can be solenoid-operated proportional reversal valve, specially bi-bit bi-pass electricity
Magnetic proportional reversing valve 2, refer to Fig. 1, Fig. 1 is hydraulic lifting system provided by the present invention
A kind of hydraulic schematic diagram of detailed description of the invention.
Two actuator ports of bi-bit bi-pass solenoid-operated proportional reversal valve 2 are respectively communicated with elevating ram 1
Rodless cavity and fuel tank.When elevating ram 1 stretches out, bi-bit bi-pass solenoid-operated proportional reversal valve 2
Being in a working position, now hydraulic oil can not be flowed to fuel tank by rodless cavity；When elevating ram 1
During retraction, bi-bit bi-pass solenoid-operated proportional reversal valve 2 is in another working position, now two
Working position connect, under gravity, hydraulic oil by rodless cavity via bi-bit bi-pass solenoid-operated proportional
Reversal valve 2 flows to fuel tank, and the most as required, controller commutates to bi-bit bi-pass solenoid-operated proportional
Valve 2 provides suitable electric current, controls the unlatching size of spool, changes the damping of running of hydraulic power oil,
In order to control the speed declined.The speed declined determines according to the position of handle, and ratio is adjustable,
When work platforms drops to the position that secondary pauses, triggering travel switch, controller output is relatively low
Electric current, the opening of bi-bit bi-pass solenoid-operated proportional reversal valve 2 reduces, reaches the mesh that speed halves
, and during normal decline, increase opening.
Damping adjustment device may also comprise hand-operated direction valve, damping reversal valve and the resistance being sequentially communicated
Buddhist nun's valve 5, wherein hand-operated direction valve can either be controlled by the signal of telecommunication, it is possible to Non-follow control, tool
Body ground, hand-operated direction valve is bi-bit bi-pass hand-operated direction valve 3, and damping reversal valve is bi-bit bi-pass
Damping reversal valve 4, refer to Fig. 2, Fig. 2 is the another of hydraulic lifting system provided by the present invention
A kind of hydraulic schematic diagram of detailed description of the invention.
One working oil of the rodless cavity connection bi-bit bi-pass hand-operated direction valve 3 of elevating ram 1
Mouthful, another actuator port connection bi-bit bi-pass damping commutation of bi-bit bi-pass hand-operated direction valve 3
One actuator port of valve 4, another actuator port connection of bi-bit bi-pass damping reversal valve 4
One actuator port of orifice valve 5, another actuator port connection fuel tank of orifice valve 5.
When elevating ram 1 stretches out, bi-bit bi-pass hand-operated direction valve 3 is in a working position,
Now hydraulic oil can not be flowed to fuel tank by rodless cavity；When elevating ram 1 is retracted, bi-bit bi-pass
Hand-operated direction valve 3 is in another working position, the now connection of two working position, makees at gravity
Under with, hydraulic oil is hindered via bi-bit bi-pass hand-operated direction valve 3, bi-bit bi-pass successively by rodless cavity
Buddhist nun's reversal valve 4 i.e. orifice valve 5 flows to fuel tank.Wherein of bi-bit bi-pass damping reversal valve 4
Working position is two actuator port normallies, for working position during normal decline, another work
It is that two actuator ports are turned on by damping as position, working position when declining for secondary.Work as work
During platform normal decline, bi-bit bi-pass hand-operated direction valve 3 obtains electric, bi-bit bi-pass damping reversal valve
4 must not be electric, and platform relies on gravity automatically to decline, and decrease speed is determined by orifice valve 5.Work as control
Device processed detects that work platforms drops to the position that secondary pauses, bi-bit bi-pass hand-operated direction valve 3
Electricly common with bi-bit bi-pass damping reversal valve 4, platform decrease speed is manually changed by bi-bit bi-pass
Together decide on to valve 3, bi-bit bi-pass damping reversal valve 4 and orifice valve 5, by reasonably choosing
Select bi-bit bi-pass damping reversal valve 4, reach the purpose that decrease speed halves.For the ease of two
The replacing of two-way damping reversal valve 4, improves the suitability, is removably installed in valve plate.
Except above-mentioned hydraulic lifting system, the detailed description of the invention of the present invention also provides for one and includes
The hoistable platform of above-mentioned hydraulic lifting system, the structure of these other each several parts of hoistable platform refer to
Prior art, repeats no more herein.
Specifically, above-mentioned hoistable platform can be scissor-type lifting platform.
Above hoistable platform provided by the present invention and hydraulic lifting system thereof are carried out in detail
Introduce.Principle and the embodiment of the present invention are set forth by specific case used herein,
The explanation of above example is only intended to help to understand method and the core concept thereof of the present invention.Should
When pointing out, for those skilled in the art, without departing from the principle of the invention
On the premise of, it is also possible to the present invention is carried out some improvement and modification, and these improve and modify also
Fall in the protection domain of the claims in the present invention.
Claims (10)
1. a hydraulic lifting system for hoistable platform, including two lifting oil setting up and down
Cylinder (1), two described elevating rams (1) are all vertically arranged and piston rod can protrude upward,
The rodless cavity of two described elevating rams (1) all connects oil pump, and rod chamber all connects fuel tank, its
It is characterised by, also includes two damping regulation dresses of the most corresponding two described elevating rams (1)
Putting, the rodless cavity of each described elevating ram (1) is all by corresponding described damping adjustment device
Connection fuel tank, described damping adjustment device can control the nothing of the described elevating ram (1) of correspondence
Bar chamber and the on off operating mode of fuel tank, and hydraulic oil can be regulated by corresponding described elevating ram (1)
The damping value that flows to fuel tank of rodless cavity.
Hydraulic lifting system the most according to claim 1, it is characterised in that described resistance
Buddhist nun's adjusting means is specially solenoid-operated proportional reversal valve.
Hydraulic lifting system the most according to claim 2, it is characterised in that described electricity
Magnetic proportional reversing valve is specially bi-bit bi-pass solenoid-operated proportional reversal valve (2), described bi-bit bi-pass electricity
Two actuator ports of magnetic proportional reversing valve (2) are respectively communicated with the nothing of described elevating ram (1)
Bar chamber and fuel tank.
Hydraulic lifting system the most according to claim 1, it is characterised in that described resistance
Buddhist nun's adjusting means includes hand-operated direction valve, damping reversal valve and the orifice valve (5) being sequentially communicated.
Hydraulic lifting system the most according to claim 4, it is characterised in that described hands
Dynamic reversal valve is specially bi-bit bi-pass hand-operated direction valve (3), and described damping reversal valve is specially two
Position two-way damping reversal valve (4), the rodless cavity of described elevating ram (1) connects described two two
One actuator port of logical hand-operated direction valve (3), another of described two two reversal valves the most logical
Individual actuator port connects an actuator port of described bi-bit bi-pass damping reversal valve (4), described
Another actuator port of bi-bit bi-pass damping reversal valve (4) connects described orifice valve (5)
One actuator port, another actuator port connection fuel tank of described orifice valve (5).
Hydraulic lifting system the most according to claim 5, it is characterised in that described two
Position two-way damping reversal valve (4) is removably installed in valve plate.
7. according to the hydraulic lifting system described in claim 1 to 6 any one, its feature
It is, between described elevating ram (1) and oil pump, is provided with the list for preventing hydraulic oil from refluxing
To valve.
Hydraulic lifting system the most according to claim 7, it is characterised in that under being positioned at
The lower section of the described elevating ram (1) of side is provided with overweight sensor (6).
9. a hoistable platform, including work platforms and the hydraulic pressure that connects described work platforms
Jacking system, it is characterised in that described hydraulic lifting system is specially claim 1 to 8 times
Anticipate a described hydraulic lifting system.
Hoistable platform the most according to claim 9, it is characterised in that described lifting is put down
Platform is specially scissor-type lifting platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610642388.4A CN106006501B (en) | 2016-08-08 | 2016-08-08 | Hoistable platform and its hydraulic lifting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610642388.4A CN106006501B (en) | 2016-08-08 | 2016-08-08 | Hoistable platform and its hydraulic lifting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106006501A true CN106006501A (en) | 2016-10-12 |
| CN106006501B CN106006501B (en) | 2019-04-02 |
Family
ID=57135308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610642388.4A Active CN106006501B (en) | 2016-08-08 | 2016-08-08 | Hoistable platform and its hydraulic lifting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106006501B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003269406A (en) * | 2002-03-18 | 2003-09-25 | Kobelco Contstruction Machinery Ltd | Speed control device for cylinder |
| JP2008063072A (en) * | 2006-09-06 | 2008-03-21 | Nippon Yusoki Co Ltd | Lifting device |
| CN201301205Y (en) * | 2008-08-05 | 2009-09-02 | 浙江诺力机械股份有限公司 | Control loop for descending of fork of industrial vehicle |
| CN103112804A (en) * | 2013-02-05 | 2013-05-22 | 浙江诺力机械股份有限公司 | Control device of lifting mechanism of industrial vehicle and control method |
| CN103380074A (en) * | 2011-02-16 | 2013-10-30 | 克朗设备公司 | Materials handling vehicle estimating a speed of a movable assembly from a lift motor speed |
| CN103438037A (en) * | 2013-08-06 | 2013-12-11 | 湖南星邦重工有限公司 | Lifting and dropping action hydraulic system for scissor type aerial working trolley platforms |
| CN205855938U (en) * | 2016-08-08 | 2017-01-04 | 湖南星邦重工有限公司 | Hoistable platform and hydraulic lifting system thereof |
-
2016
- 2016-08-08 CN CN201610642388.4A patent/CN106006501B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003269406A (en) * | 2002-03-18 | 2003-09-25 | Kobelco Contstruction Machinery Ltd | Speed control device for cylinder |
| JP2008063072A (en) * | 2006-09-06 | 2008-03-21 | Nippon Yusoki Co Ltd | Lifting device |
| CN201301205Y (en) * | 2008-08-05 | 2009-09-02 | 浙江诺力机械股份有限公司 | Control loop for descending of fork of industrial vehicle |
| CN103380074A (en) * | 2011-02-16 | 2013-10-30 | 克朗设备公司 | Materials handling vehicle estimating a speed of a movable assembly from a lift motor speed |
| CN103112804A (en) * | 2013-02-05 | 2013-05-22 | 浙江诺力机械股份有限公司 | Control device of lifting mechanism of industrial vehicle and control method |
| CN103438037A (en) * | 2013-08-06 | 2013-12-11 | 湖南星邦重工有限公司 | Lifting and dropping action hydraulic system for scissor type aerial working trolley platforms |
| CN205855938U (en) * | 2016-08-08 | 2017-01-04 | 湖南星邦重工有限公司 | Hoistable platform and hydraulic lifting system thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106006501B (en) | 2019-04-02 |
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| CP01 | Change in the name or title of a patent holder |
Address after: 410600, 128, Jinzhou Avenue East, Jinzhou new district, Changsha, Hunan, Ningxiang Patentee after: Hunan Xingbang Intelligent Equipment Co.,Ltd. Address before: 410600, 128, Jinzhou Avenue East, Jinzhou new district, Changsha, Hunan, Ningxiang Patentee before: HUNAN SINOBOOM HEAVY INDUSTRY Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Lifting platform and its hydraulic lifting system Effective date of registration: 20220112 Granted publication date: 20190402 Pledgee: Agricultural Bank of China Limited Ningxiang sub branch Pledgor: Hunan Xingbang Intelligent Equipment Co.,Ltd. Registration number: Y2022430000002 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231110 Granted publication date: 20190402 Pledgee: Agricultural Bank of China Limited Ningxiang sub branch Pledgor: Hunan Xingbang Intelligent Equipment Co.,Ltd. Registration number: Y2022430000002 |