CN207961106U - A kind of scissor aerial work platform and its floating hydraulic control system - Google Patents
A kind of scissor aerial work platform and its floating hydraulic control system Download PDFInfo
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- CN207961106U CN207961106U CN201721620848.XU CN201721620848U CN207961106U CN 207961106 U CN207961106 U CN 207961106U CN 201721620848 U CN201721620848 U CN 201721620848U CN 207961106 U CN207961106 U CN 207961106U
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- valve
- floating
- reversal valve
- balanced
- reversal
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- 238000007667 floating Methods 0.000 title claims abstract description 143
- 239000002828 fuel tank Substances 0.000 claims abstract description 31
- 239000000446 fuel Substances 0.000 claims abstract description 13
- 230000002457 bidirectional effect Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 206010037660 Pyrexia Diseases 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000008676 import Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Abstract
The utility model discloses a kind of floating hydraulic control systems, including floating cylinder, balanced valve and the first reversal valve being connect with balanced valve；Further include for being pumped for the floating control of the first reversal valve fuel feeding and for the function control pump for holding function valve block fuel feeding；The interface of balanced valve connection floating cylinder is connected respectively the rod chamber and rodless cavity of floating cylinder, the first of the first connecting balanced valve of the first reversal valve, second mouthful of connection fuel tank of the first reversal valve, the third mouth connection floating control pump of the first reversal valve；Floating control is pumped the pipeline between the third mouth of the first reversal valve equipped with the branch for connecting fuel tank, and the outlet of the overflow valve of branch road is connected on the connecting line of the first reversal valve and fuel tank.It is pumped to the independent fuel feeding of floating system using floating control in the application, is capable of the reduction heating loss of larger intensity.The utility model additionally provides a kind of scissor aerial work platform including above system.
Description
Technical field
The utility model is related to technical field of hydraulic, more specifically to a kind of floating hydraulic control system.This
Outside, the utility model further relates to a kind of scissor aerial work platform including above-mentioned floating hydraulic control system.
Background technology
When walking on uneven road, in order to improve the steady comfort of vehicle, left and right tire is needed according to road scissor
Condition automatic controlled height compensates the influence of Uneven road.
Now generally by the way of and balancing valve in parallel using two floating cylinders, preferentially drawn from pump by flow control valve
Pressure oil is entered floating cylinder all the way, realizes the automatic compensation to uneven road surface in walking process.
The diesel oil scissor of the prior art fluid that function control pumps under operating mode of walking is supplied to floating valve block, and big
Whole flows of part-time function control pump all supply floating valve block, and by low pressure relief valve stream fuel tank, and fluid pump provides
Energy all flog a dead horse for generating heat, lead to be unfavorable for that system effectiveness improves, unfavorable hot environment works long hours etc. asks
Topic, so it is generally necessary to increase radiator, however the control of system cost will be unfavorable in this way.
It is current art technology in conclusion how to provide a kind of floating hydraulic control system efficient, fever is low
Personnel's urgent problem to be solved.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of floating hydraulic control system, the floating hydraulic control system
The efficient of system, fever are low, can realize more efficient cost control.
It includes above-mentioned scissor aerial work platform that the another object of the utility model, which is to provide a kind of,.
To achieve the goals above, the utility model provides the following technical solutions：
A kind of floating hydraulic control system is used for the floating compensation of scissor aerial work platform, including floating cylinder, use
Balanced valve in from the cavity oil transportation to the floating cylinder and the first reversal valve for being connect with the balanced valve；Further include being used for
For the floating control pump of the first reversal valve fuel feeding and for the function control pump for holding function valve block fuel feeding；
The interface that the balanced valve connects the floating cylinder is connected respectively the rod chamber and nothing of the floating cylinder
The first of rod cavity, first reversal valve connects the first of the balanced valve, second mouthful of connection of first reversal valve
The third mouth of fuel tank, first reversal valve connects the floating control pump；
Pipeline between the floating control pump and the third mouth of first reversal valve is equipped with for connecting the oil
The branch of case, the branch road are provided with overflow valve, and the outlet of the overflow valve is connected to first reversal valve and the oil
On the connecting line of case.
Preferably, the pipeline between the floating control pump and the third mouth of first reversal valve is equipped with first
Road, the first branch is equipped with the pressure-detecting device of the charge oil pressure for detecting the floating control pump, when the fuel feeding
When pressure exceeds preset range, the pressure-detecting device carries out pressure alarm.
Preferably, the pipeline between the floating control pump and the third mouth of first reversal valve is equipped with the company of being used to
The second branch and third branch of the fuel tank are connect, the second branch is equipped with the first overflow valve, and first overflow valve goes out
Mouth is connected on the connecting line of first reversal valve and the fuel tank, third branch series connection second reversal valve and second
The outlet of overflow valve, second overflow valve is connected on the connecting line of first reversal valve and the fuel tank；
The setup pressure value of first overflow valve is higher than the setup pressure value of second overflow valve.
Preferably, second reversal valve is normally opened reversal valve.
Preferably, first reversal valve includes two-bit triplet reversal valve, and second reversal valve includes that 2/2-way changes
To valve, the balanced valve includes Bidirectional balanced valve.
Preferably, the floating cylinder includes left floating cylinder and right floating cylinder, and first reversal valve includes first
Left reversal valve and the first right reversal valve, the balanced valve include the first balanced valve and the second balanced valve；
The floating control pump is separately connected the third mouth of the described first left reversal valve and the first right reversal valve；
The first of the first left reversal valve connects the first of first balanced valve and second balanced valve
First；
The first of the first right reversal valve connects second mouthful of first balanced valve and second balanced valve
Second mouthful；
The third mouth of first balanced valve and the 4th mouthful of rod chamber and nothing for being connected respectively the left floating cylinder
Rod cavity, the third mouth of second balanced valve and the 4th mouthful of rodless cavity for being connected respectively the right floating cylinder and there is bar
Chamber；
Second mouthful of the first left reversal valve is all connected with the fuel tank with second mouthful of the described first right reversal valve.
Preferably, it is connected by filter between the function control pump and the holding function valve block.
Preferably, the floating control pump and function control pump are all connected with the same fuel tank, the floating control pump
Connect by shut-off valve and filter between the fuel tank, between function control pump and the fuel tank by shut-off valve and
Filter connects.
Preferably, the floating control pump and function control pump are connect with traveling pump.
A kind of scissor aerial work platform includes the floating hydraulic control system for controlling floating installation, described floating
Hydrodynamic pressure control system is the floating hydraulic control system described in above-mentioned any one.
Floating control pump the first reversal valve of connection in floating hydraulic control system provided by the utility model, to the first commutation
Valve provides pressure oil, the first reversal valve connecting balanced valve, and balanced valve connects floating cylinder, pressure oil is optionally supplied to floating
In the rod chamber and rodless cavity of oil cylinder.It is pumped to the independent fuel feeding of floating system, can be selected smaller using floating control in the application
The pump housing of discharge capacity, can not only ensure the pressure oil demand of floating system, but also can reduce the flow by overflow valve, can be larger
The reduction heating loss of intensity, so as to realize more efficient cost control.It includes upper that the utility model, which additionally provides a kind of,
State the scissor aerial work platform of floating hydraulic control system.
Description of the drawings
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the schematic diagram of floating hydraulic control system provided by the utility model.
In Fig. 1：
Floating control pump 1, function control pump 2, the first overflow valve 3, the second overflow valve 4, the first left reversal valve 5, first is right
Reversal valve 10, the first balanced valve 6, the second balanced valve 9, left floating cylinder 7, right floating cylinder 8, the second reversal valve 11, pressure is opened
12 are closed, pump engine 13 of walking.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
The core of the utility model is to provide a kind of floating hydraulic control system, the efficiency of the floating hydraulic control system
Height, fever are low, can realize more efficient cost control.It includes above-mentioned scissor that another core of the utility model, which is to provide a kind of,
Formula aerial work platform.
Referring to FIG. 1, Fig. 1 is the schematic diagram of floating hydraulic control system provided by the utility model.
A kind of floating hydraulic control system provided by the utility model, is mainly used for the floating of scissor aerial work platform
Compensation, including floating cylinder, for balanced valve from the cavity oil transportation to floating cylinder and connect with balanced valve first commutate
Valve；Further include for pumping 1 for the floating control of the first reversal valve fuel feeding and for the function control for holding function valve block fuel feeding
System pump 2.
The interface of balanced valve connection floating cylinder is connected respectively the rod chamber and rodless cavity of floating cylinder, the first commutation
The first of the first connecting balanced valve of valve, second mouthful of connection fuel tank of the first reversal valve, the third mouth of the first reversal valve connect
Connect floating control pump；
Pipeline between floating control pump 1 and the third mouth of the first reversal valve is equipped with the branch for connecting fuel tank, branch
Road is provided with overflow valve, and the outlet of overflow valve is connected on the connecting line of the first reversal valve and fuel tank.
It should be noted that 1 the first reversal valve of connection of floating control pump in the application, pressure is provided to the first reversal valve
Oil, the first reversal valve connecting balanced valve, balanced valve connect floating cylinder, and what pressure oil was optionally supplied to floating cylinder has bar
In chamber and rodless cavity.
Pressure oil, and the oil are provided due to there is the same fluid to pump to floating system and holding function valve block in the prior art
Liquid pump can then be constantly in working condition after plateform system startup, have the characteristics that discharge capacity is big, the working time is long, thus can be
Larger thermal losses is generated at overflow valve.
And the pump housing of smaller displacement can be selected, both to the independent fuel feeding of floating system using floating control pump 1 in the application
It can ensure the pressure oil demand of floating system, and in reduction system by the flow of overflow valve, larger intensity can be capable of
Heating loss is reduced, so as to realize more efficient cost control.
On the basis of above-described embodiment, it is set on the pipeline between floating control pump 1 and the third mouth of the first reversal valve
There are the first branch, the first branch to be equipped with the pressure-detecting device of the charge oil pressure for detecting floating control pump 1, work as charge oil pressure
When beyond preset range, pressure-detecting device carries out pressure alarm.
Optionally, above-mentioned pressure-detecting device can be pressure switch 12, referring to FIG. 1, pressure switch 12 is arranged in Fig. 1
On the first leg, due to floating control pump 1 and the third mouth of the first reversal valve between pipeline and the first branch be connected to,
So the pressure value measured in the first branch can embody the oil pressure numerical value of above-mentioned pipeline, when pressure switch 12 detects numerical value
When beyond preset range, then alarm mode is opened.
In the present embodiment, increase pressure switch detection floating pressure in floating hydraulic control system.If floating control pumps
Or floating pipeline goes wrong, when can not provide pressure needed for floating, pressure detection switch sender is simultaneously alarmed, and reminds operator's inspection
Look into status of equipment.Above-mentioned setting more efficiently can carry out failure prompting to operator, avoid the occurrence of breakdown maintenance not in time
The case where.
On the basis of any one above-mentioned embodiment, between floating control pump 1 and the third mouth of the first reversal valve
Pipeline is equipped with the second branch and third branch for being used to connection fuel tank, and the second branch is equipped with the first overflow valve 3, the first overflow
The outlet of valve 3 is connected on the connecting line of the first reversal valve and fuel tank, and third branch the second reversal valve 11 and second of series connection overflows
Valve 4 is flowed, the outlet of the second overflow valve 4 is connected on the connecting line of the first reversal valve and fuel tank；The setting pressure of first overflow valve 3
Force value is higher than the setup pressure value of the second overflow valve 4.
It should be noted that above-mentioned two branch is both provided with overflow valve, the difference of two overflow valves is that pressure is arranged
The difference of value and the difference of cascaded structure, the second overflow valve 4 are connected with the second reversal valve 11.Optionally, overflow valve can be with
It is configured by way of other branches, the use with floating hydraulic control system is needed to be coordinated.
Optionally, the second reversal valve 11 is normally opened reversal valve.It should be noted that even if system is not in quick condition
When, also only the flow of very little pass through floating valve block, caused by energy loss will greatly reduce.
On the basis of above-described embodiment, the first reversal valve includes two-bit triplet reversal valve, and the second reversal valve 11 includes
2/2-way reversal valve, balanced valve include Bidirectional balanced valve.
On the basis of any one above-mentioned embodiment, floating cylinder includes left floating cylinder 7 and right floating cylinder 8,
First reversal valve includes the first left reversal valve 5 and the first right reversal valve 10, and balanced valve includes the first balanced valve 6 and the second balanced valve
9；
Floating control pump 1 is separately connected the third mouth of the first left reversal valve 5 and the first right reversal valve 10；
Second mouthful of first the first balanced valve 6 of connection of first left reversal valve 5 and second mouthful of the second balanced valve 9；
The first of first right reversal valve 10 connects the first of the first and the second balanced valve 9 of the first balanced valve 6；
The third mouth of first balanced valve 6 and the 4th mouthful of rod chamber and rodless cavity for being connected respectively left floating cylinder 7, the
The third mouth of two balanced valves 9 and the 4th mouthful of rodless cavity and rod chamber for being connected respectively right floating cylinder 8；
Second mouthful of first left reversal valve 5 and second mouthful of the first right reversal valve 10 are all connected with fuel tank.
It should be noted that the single valve body of generally use corresponds to the setting of single floating cylinder, this implementation in the prior art
Two balanced valves are controlled across respectively using two reversal valves in example, two balanced valves are then respectively one to one to floating
Dynamic oil cylinder is controlled, and above-mentioned setting can control the rod chamber and rodless cavity of left floating cylinder and right floating cylinder.
Optionally, it is connected by filter between function control pump 2 and holding function valve block.Referring to FIG. 1, work(in Fig. 1
Filter that can be between control pump 2 and holding function valve block can realize the filtering to the pressure oil into holding function valve block.
On the basis of any one above-mentioned embodiment, floating control pump 1 and function control pump 2 are all connected with the same oil
Case is connected between floating control pump 1 and fuel tank by shut-off valve and filter, passes through cut-off between function control pump 2 and fuel tank
Valve is connected with filter.
Optionally, floating control pump 1 and function control pump 2 are connect with traveling pump 13.
In a specific embodiment provided by the utility model, floating hydraulic control system includes 1 floating control
1,1 function control of pump pumps 2,1 the first overflow valves, 3,1 the second overflow valves 4, the first left reversal valve 5, the first right reversal valve
10, the first balanced valve, the second balanced valve 9, left floating cylinder 7, right floating cylinder 8,1 the second reversal valves, 11,1 pressure switch
12 and multiple shut-off valves and filter.Wherein, pressure switch 12, multiple shut-off valves and filter are optional setting structure.
Referring to FIG. 1, outlet and pressure switch 12, the import of the first overflow valve 3, the second reversal valve of floating control pump 1
11 import, the first left reversal valve 5 are connected with the 3. mouth of the first right reversal valve 10.
The outlet of second reversal valve 11 is connect with the import of the second overflow valve 4, outlet, the second overflow of the first overflow valve 3
The 2. mouth of the outlet of valve 4, the 2. mouth of the first left reversal valve 5 and the first right reversal valve 10 with fuel tank T mouthfuls connect.
The 1. mouth of first left reversal valve 5 is connect with the 2. mouth of the first balanced valve 6 and the second balanced valve 9, the first right reversal valve
10 1. mouth is connect with the 1. mouth of the first balanced valve 6 and the second balanced valve 9, and the 3. mouth of the first balanced valve 6,4. mouth are floating with a left side respectively
The rod chamber of dynamic oil cylinder 7, rodless cavity connection, the 3. mouth of the second balanced valve 9,4. mouth respectively with the rodless cavity of right floating cylinder 8, have
Rod cavity connects, and function control pump 2 is the function control P1 fuel feeding of function control valve block.
Wherein, the setup pressure value of above-mentioned first overflow valve 3 is higher than the second overflow valve 4.First left reversal valve 5 and first is right
Reversal valve 10 can be two-bit triplet reversal valve, and the second reversal valve 11 can be 2/2-way reversal valve, can also be other shapes
Formula reversal valve.First balanced valve 6 and the second balanced valve 9 can be Bidirectional balanced valve, can also be other forms balanced valve.
In addition to the floating hydraulic control system that above-mentioned each embodiment is provided, it includes upper that the utility model, which also provides a kind of,
State the scissor aerial work platform of floating hydraulic control system disclosed in embodiment, the scissor aerial work platform other
Refer to the prior art for the structure of each section, and repeats no more herein.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
Scissor aerial work platform provided by the utility model and its floating hydraulic control system are carried out above
It is discussed in detail.Specific case used herein is expounded the principles of the present invention and embodiment, the above implementation
The explanation of example is merely used to help understand the method and its core concept of the utility model.It should be pointed out that for the art
Those of ordinary skill for, without departing from the principle of this utility model, can also to the utility model carry out it is several
Improvement and modification, modifications and modifications also fall within the protection scope of the claims of the utility model.
Claims (10)
1. a kind of floating hydraulic control system, it to be used for the floating compensation of scissor aerial work platform, including floating cylinder, is used for
Balanced valve to the cavity oil transportation of the floating cylinder and the first reversal valve for being connect with the balanced valve；It is characterized in that,
Further include for pumping (1) for the floating control of the first reversal valve fuel feeding and for the function for holding function valve block fuel feeding
Control pump (2)；
The interface that the balanced valve connects the floating cylinder is connected respectively the rod chamber and rodless cavity of the floating cylinder,
The first of first reversal valve connects the first of the balanced valve, and second mouthful of first reversal valve connects fuel tank,
The third mouth of first reversal valve connects the floating control pump；
Pipeline between the floating control pump (1) and the third mouth of first reversal valve is equipped with for connecting the fuel tank
Branch, branch road is provided with overflow valve, and the outlet of the overflow valve is connected to first reversal valve and the fuel tank
Connecting line on.
2. floating hydraulic control system according to claim 1, which is characterized in that floating control pump (1) with it is described
Pipeline between the third mouth of first reversal valve is equipped with the first branch, and the first branch is equipped with for detecting the floating control
The pressure-detecting device of the charge oil pressure of system pump (1), when the charge oil pressure exceeds preset range, the pressure-detecting device
Carry out pressure alarm.
3. floating hydraulic control system according to claim 2, which is characterized in that floating control pump (1) with it is described
Pipeline between the third mouth of first reversal valve is equipped with the second branch and third branch for being used to connect the fuel tank, described
The second branch is equipped with the first overflow valve (3), and the outlet of first overflow valve (3) is connected to first reversal valve and the oil
On the connecting line of case, third branch second reversal valve of series connection (11) and the second overflow valve (4), second overflow valve
(4) outlet is connected on the connecting line of first reversal valve and the fuel tank；
The setup pressure value of first overflow valve (3) is higher than the setup pressure value of second overflow valve (4).
4. floating hydraulic control system according to claim 3, which is characterized in that second reversal valve (11) is normally opened
Reversal valve.
5. floating hydraulic control system according to claim 3, which is characterized in that first reversal valve includes two three
Logical reversal valve, second reversal valve (11) includes 2/2-way reversal valve, and the balanced valve includes Bidirectional balanced valve.
6. the floating hydraulic control system according to claim 1 to 5 any one, which is characterized in that the floating cylinder
Including left floating cylinder (7) and right floating cylinder (8), first reversal valve includes that the first left reversal valve (5) and first right side are changed
To valve (10), the balanced valve includes the first balanced valve (6) and the second balanced valve (9)；
The floating control pump (1) is separately connected the third mouth of the described first left reversal valve (5) and the first right reversal valve (10)；
The first of the first left reversal valve (5) connects the first of first balanced valve (6) and second balanced valve
(9) first；
The first of the first right reversal valve (10) connects second mouthful and second balanced valve of first balanced valve (6)
(9) second mouthful；
The third mouth of first balanced valve (6) and the 4th mouthful of rod chamber for being connected respectively the left floating cylinder (7) and
Rodless cavity, the third mouth of second balanced valve (9) and the 4th mouthful of rodless cavity for being connected respectively the right floating cylinder (8)
And rod chamber；
Second mouthful of the first left reversal valve (5) is all connected with the fuel tank with second mouthful of the described first right reversal valve (10).
7. floating hydraulic control system according to claim 6, which is characterized in that function control pump (2) with it is described
It is connected by filter between holding function valve block.
8. floating hydraulic control system according to claim 7, which is characterized in that the floating control pump is (1) and described
Function control pump (2) is all connected with the same fuel tank, passes through shut-off valve and filtering between the floating control pump (1) and the fuel tank
Device connects, and is connect by shut-off valve and filter between the function control pump (2) and the fuel tank.
9. floating hydraulic control system according to claim 8, which is characterized in that the floating control pump is (1) and described
Function control pump (2) is connect with traveling pump (13).
10. a kind of scissor aerial work platform, includes the floating hydraulic control system for controlling floating installation, feature exists
In the floating hydraulic control system is the floating hydraulic control system described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721620848.XU CN207961106U (en) | 2017-11-28 | 2017-11-28 | A kind of scissor aerial work platform and its floating hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721620848.XU CN207961106U (en) | 2017-11-28 | 2017-11-28 | A kind of scissor aerial work platform and its floating hydraulic control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207961106U true CN207961106U (en) | 2018-10-12 |
Family
ID=63728097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721620848.XU Active CN207961106U (en) | 2017-11-28 | 2017-11-28 | A kind of scissor aerial work platform and its floating hydraulic control system |
Country Status (1)
| Country | Link |
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| CN (1) | CN207961106U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795535A (en) * | 2017-11-28 | 2018-03-13 | 湖南星邦重工有限公司 | A kind of scissor aerial work platform and its floating hydraulic control system |
-
2017
- 2017-11-28 CN CN201721620848.XU patent/CN207961106U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795535A (en) * | 2017-11-28 | 2018-03-13 | 湖南星邦重工有限公司 | A kind of scissor aerial work platform and its floating hydraulic control system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 410600, No. 128, Jinzhou East Road, Ningxiang hi tech Development Zone, Hunan, Changsha Patentee after: Hunan Xingbang Intelligent Equipment Co., Ltd Address before: 410600, No. 128, Jinzhou East Road, Ningxiang hi tech Development Zone, Hunan, Changsha Patentee before: HUNAN SINOBOOM HEAVY INDUSTRY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |