CN105016242A - Lifting device - Google Patents
Lifting device Download PDFInfo
- Publication number
- CN105016242A CN105016242A CN201510338492.XA CN201510338492A CN105016242A CN 105016242 A CN105016242 A CN 105016242A CN 201510338492 A CN201510338492 A CN 201510338492A CN 105016242 A CN105016242 A CN 105016242A
- Authority
- CN
- China
- Prior art keywords
- upper frame
- jack
- underframe
- assembly
- unit according
- 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
- 230000000712 assembly Effects 0.000 claims description 12
- 238000000429 assembly Methods 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 238000012360 testing method Methods 0.000 abstract description 10
- 238000005303 weighing Methods 0.000 description 15
- 238000011161 development Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 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
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000010998 test method Methods 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
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
- B66F7/12—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks
- B66F7/14—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks screw operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The invention provides a lifting device. The lifting device comprises two lifting components which are arranged oppositely, wherein the two lifting components are connected with each other by a supporting rod; each lifting component comprises a top frame capable of being lifted up and down; wheels on the two sides of a to-be-tested vehicle are respectively supported on the top frames of the corresponding lifting components. The lifting device disclosed by the invention is simple in structure, convenient to operate, capable of conveniently lifting vehicles and capable of solving the problem that the vehicles for different rail distances are hard to lift during a test in the prior art.
Description
Technical field
The present invention relates to vehicle test field, in particular to a kind of jack up unit.
Background technology
At present, flourish along with railway especially high speed railway, increasing enterprise goes abroad, the target of development of globalization of having marched toward.
Development of globalization also accelerates the paces of Enterprise Diversification development, the vehicle of various gauge increases, from 1000mm gauge to 1676mm gauge, the vehicle of different gauge cannot use the test platform of current domestic standard gauge when carrying out balance test and softness factor test, can only hydraulic jack be adopted to hoist in temporary staging position.This test method wastes time and energy and efficiency is lower, there is certain potential safety hazard simultaneously, cannot meet the demand that enterprise is growing.
Summary of the invention
Main purpose of the present invention is to provide a kind of jack up unit, to solve the problem being not easy when testing the vehicle of different gauge in prior art to hoist to vehicle.
To achieve these goals, the invention provides a kind of jack up unit, comprise: two assemblies that hoist be oppositely arranged, two assemblies that hoist are connected by strut bar, and the assembly that hoists comprises the upper frame that can move up and down, the wheel of the both sides of vehicle to be tested is supported on respectively and hoists accordingly on the upper frame of assembly.
Further, the assembly that hoists also comprises: underframe, and upper frame is vertically arranged on underframe to position-adjustable; Actuating device, actuating device drives with upper frame and is connected, and drives upper frame vertically to move.
Further, underframe is provided with the chute vertically extended, and upper frame is provided with the slide block matched with chute, slide block is slidably mounted in chute along the bearing of trend of chute.
Further, the inwall of chute is provided with guide groove, slide block is provided with the guidepost matched with guide groove, guidepost is arranged in guide groove.
Further, the underframe of two assemblies that hoist is connected by strut bar, and strut bar is Collapsible structure, and one end away from strut bar of underframe is provided with abutting part, and when strut bar extends and promotes underframe, abutting part abuts the sidewall of the inboard groove of track.
Further, underframe is provided with thread rod, thread rod is provided with the first clamp nut and the second clamp nut, the first clamp nut is for being connected to the upper end wall of the inboard groove of track, and the second clamp nut is for being connected to the lower end wall of the inboard groove of track.
Further, jack up unit comprises support portion, and vertically move in support portion under the drive of upper frame, and support portion is horizontally disposed with, and wheel is placed on support portion.
Further, the support platform that support portion comprises equal power plate and extends from upper frame, equal power plate is arranged in support platform, and wheel is placed on equal power plate.
Further, the assembly that hoists also comprises weighting apparatus, and weighting apparatus is arranged in support platform, and weighting apparatus is arranged between equal power plate and support platform.
Further, equal power plate is provided with back-up block, and the upper surface of back-up block is arcwall face, wheel is placed on the upper surface of back-up block.
Further, the assembly that hoists also comprises: displacement pickup, is connected with upper frame, for detecting the displacement of upper frame.
Jack up unit in the present invention comprises two assemblies that hoist connected by strut bar, because each assembly that hoists includes the upper frame that can move up and down, like this two assemblies that hoist are connected between track, and the wheel of the both sides of vehicle to be tested is prevented from hoisting on the upper frame of assembly at one respectively, just can realize hoisting to vehicle by driving upper frame upward movement.
Jack up unit structure in the present invention is simple, easy to operate, and can hoist vehicle more easily, solves the problem being not easy when testing the vehicle of different gauge in prior art to hoist to vehicle.
Accompanying drawing explanation
The Figure of description forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of jack up unit of the present invention.
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
10, strut bar; 20, upper frame; 21, slide block; 22, guidepost; 23, support platform; 30, underframe; 31, abutting part; 41, thread rod; 42, the first clamp nut; 43, the second clamp nut; 50, equal power plate; 51, back-up block; 60, weighting apparatus; 70, displacement pickup; 80, track.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
The invention provides a kind of jack up unit, please refer to Fig. 1, this jack up unit comprises: two assemblies that hoist be oppositely arranged, two assemblies that hoist are connected by strut bar 10, and the assembly that hoists comprises the upper frame 20 that can move up and down, the wheel of the both sides of vehicle to be tested is supported on respectively and hoists accordingly on the upper frame 20 of assembly.
Jack up unit in the present embodiment comprises two assemblies that hoist connected by strut bar 10, because each assembly that hoists includes the upper frame 20 that can move up and down, like this two assemblies that hoist are connected between track 80, and the wheel of the both sides of vehicle to be tested is prevented respectively on the upper frame 20 of the assembly that hoists, just can realize hoisting to vehicle by driving upper frame 20 upward movement.
Jack up unit structure in the present embodiment is simple, easy to operate, and can hoist vehicle more easily, solves the problem being not easy when testing the vehicle of different gauge in prior art to hoist to vehicle.
Preferably, the assembly that hoists also comprises: underframe 30, and upper frame 20 is vertically arranged on to position-adjustable on underframe 30; Actuating device, actuating device drives with upper frame 20 and is connected, and drives upper frame 20 vertically to move.Preferably, actuating device is arranged on underframe 30.
The application, by arranging underframe 30 and actuating device, just can support this upper frame 20 more easily, and drives this upper frame 20 to move up and down.Preferably, this actuating device is hydraulic actuating cylinder.
Preferably, underframe 30 is provided with the chute vertically extended, and upper frame 20 is provided with the slide block 21 matched with chute, slide block 21 is slidably mounted in chute along the bearing of trend of chute.By arranging chute and slide block 21, the moving relative to underframe 30 of upper frame 20 can be ensured.Preferably, actuating device drives with slide block 21 and is connected.
Preferably, the inwall of chute is provided with guide groove, slide block 21 is provided with the guidepost 22 matched with guide groove, guidepost 22 is arranged in guide groove.The application, by arranging guide groove and guidepost 22, can ensure that upper frame 20 vertically moves.
Preferably, the underframe 30 of two assemblies that hoist is connected by strut bar 10, and strut bar 10 is Collapsible structure, and one end away from strut bar 10 of underframe 30 is provided with abutting part 31, when strut bar 10 extends and promotes underframe 30, abutting part 31 abuts the sidewall of the inboard groove of track 80.The application can make underframe 30 be connected on the inwall of track 80 by arranging abutting part 31 more easily.
Preferably, underframe 30 is provided with thread rod 41, thread rod 41 is provided with the first clamp nut 42 and the second clamp nut 43, first clamp nut 42 is for being connected to the upper end wall of the inboard groove of track 80, and the second clamp nut 43 is for being connected to the lower end wall of the inboard groove of track 80.
In this application, by arranging the first clamp nut 42 and the second clamp nut 43, first clamp nut 42 and the second clamp nut 43 are connected on the upper and lower end wall of track 80 inboard groove respectively, and then prevent the situation that one end tilting occurs in this jack up unit installation process.
Preferably, jack up unit comprises support portion, and vertically move in support portion under the drive of upper frame 20, and support portion is horizontally disposed with, and wheel is placed on support portion.
The application, by arranging the support portion of horizontal positioned, can support wheel more easily.
Preferably, the support platform 23 that support portion comprises equal power plate 50 and extends from upper frame 20, equal power plate 50 is arranged in support platform 23, and wheel is placed on equal power plate 50.
The application, by arranging support platform 23, can make upper frame 20 drive support portion to move more easily, and by arranging equal power plate 50, can make the uniform force of whole support portion.
Preferably, the assembly that hoists also comprises weighting apparatus 60, and weighting apparatus 60 is arranged in support platform 23, and weighting apparatus 60 is arranged between equal power plate 50 and support platform 23.
This weighting apparatus 60 by arranging weighting apparatus 60, and is placed on the weight that can detect vehicle between equal power plate 50 and support platform 23 more easily by the application.
Preferably, equal power plate 50 is provided with back-up block 51, and the upper surface of back-up block 51 is arcwall face, wheel is placed on the upper surface of back-up block 51.Like this, can make to reach the effect making whole support portion uniform force, position-limiting action can also be formed to wheel, place vehicle and roll on support portion.
Preferably, the assembly that hoists also comprises: displacement pickup 70, is connected with upper frame 20, for detecting the displacement of upper frame 20.The application, by arranging displacement pickup 70, can detect the displacement of upper frame 20 more easily, and then determine the rising height of wheel.
Jack up unit in the present invention has advantage that is portable, simple to operate, computing machine centralized monitoring and controlling.
The present invention relates to a set of hydraulic hoist unit, this hydraulic hoist unit comprises two assemblies and intermediate connecting rod, holds 2 wheels of an axletree, realizes wheel hoist by hydraulic lift.
In this device, the underframe 30 of assembly to be placed on inside track 80 in shallow hole, rail medial surface is propped up by strut, hydraulic actuating cylinder is arranged on underframe inside, upper frame 20 and underframe are not fixed, just by the motion of guide runner restriction upper frame, upper frame 20 is inner to be fixed with hydraulic actuating cylinder sphere, weighing unit installed by the platform that upper frame 20 front end is stretched out, equal power plate 50 is arranged on weighing unit by pin-and-hole, wheel acts directly on equal power plate 50, moves and direct wheel load is passed to weighing unit together with upper frame 20.
In this application, during hydraulic actuating cylinder action, direct jacking upper frame, upper frame only does catenary motion under the restriction of underframe and slide block, drives weighing unit and wheel to hoist.
The present invention tests in shallow hole inside track 80, and this device volume is little, lightweight, Assembling, disassembles conveniently.
In this application, package unit controls System's composition by underframe, upper frame, guide runner, weighing unit, all power plate, hydraulic actuating cylinder, displacement pickup, data acquisition storage and hydraulic actuating cylinder.
In this application, underframe back and strut affixed, make two groups of underframe ends prop up rail medial surface by connection-rod, orienting lug moves in underframe guide groove, leads to upper frame, and hydraulic actuating cylinder is arranged on underframe inside.According to actual conditions, the assembly that hoists also can be arranged along the position-adjustable of strut bar 10, so just can regulate two distances hoisted between assembly.
In this application, if when this lifting altitude is less than 100mm, without back-up block 51, directly hold wheel by equal power plate 50 to hoist, if when lifting altitude is greater than 100mm, equal power plate 50 is held wheel and is risen when being raised to certain altitude, wheel is held with auxiliary device, then slide block 21 is fallen, equal power plate adds back-up block 51, carries out secondary lifting.The reason of such lifting is that existing hydraulic actuating cylinder cannot meet the requirement that hoists once being greater than more than 100mm.
In this application, respectively there are two guideposts upper frame both sides, and for leading when upper frame hoists, guidepost height 65mm, this guidepost drives guide runner to move in the guide groove of underframe, achieves the guide and limit function of differing heights.Hydraulic actuating cylinder and upper frame sphere are fixed, and upper frame front end is stretched out on platform and installed weighing unit, drive weighing unit and wheel to hoist by hoisting of upper frame.
In this application, weighing unit is arranged on upper frame, and upper frame lifting drives weighing unit to hoist together, and equal power plate is arranged on weighing unit, ensures weighing unit uniform force.
To sum up content, the present invention tests in shallow hole inside track 80, and this device volume is little, lightweight, Assembling, disassembles conveniently.
Two groups of underframe are by intermediate connecting rod Connection Card side in orbit, and upper frame drives weighing unit to rise by hydraulic actuating cylinder jacking, and equal power plate is installed on weighing unit top, and wheel finally drops on equal power plate, reads by sensor numerical value of weighing.
As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:
The present invention has the advantages that structure is simple, overall volume is less, meet the restriction of installing space under car, directly drive upper frame to hoist by the Multi-stage lifting of hydraulic actuating cylinder, motion stabilization, and wheel acts directly on back-up block 51, the wheel load data measured by weighing unit are accurate.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a jack up unit, is characterized in that, comprising:
Two assemblies that hoist be oppositely arranged, the assembly that hoists described in two is connected by strut bar (10), and described in the assembly that hoists comprise the upper frame (20) that can move up and down, the wheel of the both sides of vehicle to be tested be supported on respectively corresponding described in hoist on the upper frame (20) of assembly.
2. jack up unit according to claim 1, is characterized in that, described in the assembly that hoists also comprise:
Underframe (30), described upper frame (20) is vertically arranged on to position-adjustable on described underframe (30);
Actuating device, described actuating device drives with described upper frame (20) and is connected, and drives described upper frame (20) vertically to move.
3. jack up unit according to claim 2, it is characterized in that, (30) are provided with the chute vertically extended with described underframe, and described upper frame (20) being provided with the slide block (21) matched with described chute, described slide block (21) is slidably mounted in described chute along the bearing of trend of described chute.
4. jack up unit according to claim 3, it is characterized in that, the inwall of described chute is provided with guide groove, described slide block (21) is provided with the guidepost (22) matched with described guide groove, described guidepost (22) is arranged in described guide groove.
5. jack up unit according to claim 2, it is characterized in that, the described underframe (30) of assembly of hoisting described in two is connected by strut bar (10), described strut bar (10) is Collapsible structure, and one end away from described strut bar (10) of described underframe (30) is provided with abutting part (31), when described strut bar (10) extends and promotes described underframe (30), described abutting part (31) abuts the sidewall of the inboard groove of track (80).
6. jack up unit according to claim 2, it is characterized in that, described underframe (30) is provided with thread rod (41), described thread rod (41) is provided with the first clamp nut (42) and the second clamp nut (43), described first clamp nut (42) is for being connected to the upper end wall of the inboard groove of track (80), and described second clamp nut (43) is for being connected to the lower end wall of the inboard groove of track (80).
7. jack up unit according to claim 1, it is characterized in that, described jack up unit comprises support portion, vertically moves in described support portion under the drive of described upper frame (20), and described support portion is horizontally disposed with, described wheel is placed on described support portion.
8. jack up unit according to claim 7, it is characterized in that, the support platform (23) that described support portion comprises equal power plate (50) and extends from described upper frame (20), described equal power plate (50) is arranged in described support platform (23), and described wheel is placed on described equal power plate (50).
9. jack up unit according to claim 8, it is characterized in that, the described assembly that hoists also comprises weighting apparatus (60), described weighting apparatus (60) is arranged in described support platform (23), and described weighting apparatus (60) is arranged between described equal power plate (50) and described support platform (23).
10. jack up unit according to claim 8, it is characterized in that, described equal power plate (50) is provided with back-up block (51), and the upper surface of described back-up block (51) is arcwall face, described wheel is placed on the upper surface of described back-up block (51).
11. jack up units according to claim 1, is characterized in that, described in the assembly that hoists also comprise:
Displacement pickup (70), is connected with described upper frame (20), for detecting the displacement of described upper frame (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510338492.XA CN105016242B (en) | 2015-06-17 | 2015-06-17 | Jack up unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510338492.XA CN105016242B (en) | 2015-06-17 | 2015-06-17 | Jack up unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105016242A true CN105016242A (en) | 2015-11-04 |
| CN105016242B CN105016242B (en) | 2017-09-05 |
Family
ID=54406628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510338492.XA Active CN105016242B (en) | 2015-06-17 | 2015-06-17 | Jack up unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105016242B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112551415A (en) * | 2020-12-01 | 2021-03-26 | 蒋浩 | Hydraulic lifting platform guide rail adjusting structure for rail transit maintenance |
| CN119846366A (en) * | 2025-03-18 | 2025-04-18 | 广东南天司法鉴定所 | Dynamometer system for electric vehicle attribute identification in trace judicial identification |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2244248B (en) * | 1990-05-24 | 1994-01-26 | Pfaff Silberblau Hebezeug | Lifting system for rail-borne vehicles |
| DE202006010225U1 (en) * | 2006-06-29 | 2006-08-31 | De Fahrzeuginstandhaltung Gmbh | Low floor components e.g. bogie, changing device for e.g. clock train, has changing mechanism designed as assembly tray attached to sink hole, where tray is connected with track standing at angle to rail sections in lowered condition |
| CN101209705A (en) * | 2006-12-31 | 2008-07-02 | 同方威视技术股份有限公司 | Self-driving trailer system and vehicle radiation imaging inspection method using the system |
| CN201834709U (en) * | 2010-08-25 | 2011-05-18 | 上海富朗德机械设备有限公司 | On-line lifting device of electric self-traveling trolley |
| CN202453204U (en) * | 2012-01-17 | 2012-09-26 | 中国神华能源股份有限公司铁路货车运输分公司 | Wheel rotating device of train wheel axle flaw detector |
| CN204173856U (en) * | 2014-10-29 | 2015-02-25 | 金鹰重型工程机械有限公司 | A kind of rail vehicle jacking frame lifting device |
-
2015
- 2015-06-17 CN CN201510338492.XA patent/CN105016242B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2244248B (en) * | 1990-05-24 | 1994-01-26 | Pfaff Silberblau Hebezeug | Lifting system for rail-borne vehicles |
| DE202006010225U1 (en) * | 2006-06-29 | 2006-08-31 | De Fahrzeuginstandhaltung Gmbh | Low floor components e.g. bogie, changing device for e.g. clock train, has changing mechanism designed as assembly tray attached to sink hole, where tray is connected with track standing at angle to rail sections in lowered condition |
| CN101209705A (en) * | 2006-12-31 | 2008-07-02 | 同方威视技术股份有限公司 | Self-driving trailer system and vehicle radiation imaging inspection method using the system |
| CN201834709U (en) * | 2010-08-25 | 2011-05-18 | 上海富朗德机械设备有限公司 | On-line lifting device of electric self-traveling trolley |
| CN202453204U (en) * | 2012-01-17 | 2012-09-26 | 中国神华能源股份有限公司铁路货车运输分公司 | Wheel rotating device of train wheel axle flaw detector |
| CN204173856U (en) * | 2014-10-29 | 2015-02-25 | 金鹰重型工程机械有限公司 | A kind of rail vehicle jacking frame lifting device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112551415A (en) * | 2020-12-01 | 2021-03-26 | 蒋浩 | Hydraulic lifting platform guide rail adjusting structure for rail transit maintenance |
| CN112551415B (en) * | 2020-12-01 | 2022-09-02 | 山东双河重工集团有限公司 | Hydraulic lifting platform guide rail adjusting structure for rail transit maintenance |
| CN119846366A (en) * | 2025-03-18 | 2025-04-18 | 广东南天司法鉴定所 | Dynamometer system for electric vehicle attribute identification in trace judicial identification |
| CN119846366B (en) * | 2025-03-18 | 2025-06-03 | 广东南天司法鉴定所 | A dynamometer system for electric vehicle attribute identification in trace forensic identification |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105016242B (en) | 2017-09-05 |
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| CB02 | Change of applicant information |
Address after: Chengyang District of Shandong city of Qingdao province Jinhong road 266111 No. 88 Applicant after: CRRC QINGDAO SIFANG CO., LTD. Address before: Chengyang District of Shandong city of Qingdao province Jinhong road 266111 No. 88 Applicant before: CSR Qingdao Sifang Locomotive and Rolling Stock Co., Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20180521 Address after: 266111 Jinhong Road, Chengyang District, Qingdao, Shandong Province, No. 88 Co-patentee after: Tianjin Sifang Rail Vehicle Co., Ltd. Patentee after: CRRC QINGDAO SIFANG CO., LTD. Address before: 266111 Jinhong Road, Chengyang District, Qingdao, Shandong Province, No. 88 Patentee before: CRRC QINGDAO SIFANG CO., LTD. |
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| TR01 | Transfer of patent right |