CN106956671B - A kind of manual double spool brake valve - Google Patents

A kind of manual double spool brake valve Download PDF

Info

Publication number
CN106956671B
CN106956671B CN201710220941.XA CN201710220941A CN106956671B CN 106956671 B CN106956671 B CN 106956671B CN 201710220941 A CN201710220941 A CN 201710220941A CN 106956671 B CN106956671 B CN 106956671B
Authority
CN
China
Prior art keywords
hole
valve body
spool
valve opening
cover board
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.)
Active
Application number
CN201710220941.XA
Other languages
Chinese (zh)
Other versions
CN106956671A (en
Inventor
胡万强
刘国红
姚宁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xi'an Hangyu Power Control Technology Co.,Ltd.
Original Assignee
Xuchang University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Xuchang University filed Critical Xuchang University
Priority to CN201710220941.XA priority Critical patent/CN106956671B/en
Publication of CN106956671A publication Critical patent/CN106956671A/en
Application granted granted Critical
Publication of CN106956671B publication Critical patent/CN106956671B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T15/00Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02Application and release valves
    • B60T15/04Driver's valves

Abstract

The invention discloses a kind of manual double spool brake valves, including valve body, left spool, right spool, cover board, mandril, handle;Left valve opening is provided on valve body, right valve opening, push plate hole, cover board hole, fuel feed hole, oil return hole, drainback passage, control port, screw hole, ears hinge hole, left spool is mounted in the intracorporal left valve opening of valve and can move along the axis direction of valve body, right spool is mounted in the intracorporal right valve opening of the valve and can move along the axis direction of the valve body, cover board is mounted in the cover board hole of the valve body upper end and concordant with the cover board hole upper end, mandril is mounted on cover board intermediate throughholes and can move up and down along through-hole, handle left end is monaural hinge hole, monaural hinge hole is connected by a hinge with the ears hinge hole on the valve body.Technical solution provided by the invention, compact-sized, reliable operation, stability are good, can be realized simultaneously to multiple controlled device emergency brakes.

Description

A kind of manual double spool brake valve
Technical field
The present invention relates to hydraulic buttery valve technical fields, especially a kind of compact-sized, reliable operation, versatility and stabilization Property it is good, may be implemented to it is multiple rotation wheels simultaneously emergency brakes manual double spool brake valves.
Background technique
Existing walking class mechanical device mostly uses gas/liquid boosting braking system, by a pneumohydraulic pressure-cylinder, braking is total Brake cylinder is sent into after brake fluid pressurization in pumping and implements braking, which is widely used at home.But it also deposits simultaneously The defects of needing individual compressed gas source, number of elements be more, structure is complicated.
In recent years, external some walking class mechanical devices use full power hydraulic brake system, are transmitted and are braked by hydraulic oil Pressure oil is directly sent to brake cylinder by hydraulic control component and implements to brake, solve gas-liquid boosting braking system by power Above-mentioned deficiency.Important in hydraulic control component is manual double spool brake valve, the manual double spool braking used now Valve is generally the manual double spool brake valve of single spool, needs other hydraulic control components to realize that oil circuit is sent, increases and be The complexity of system.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of compact-sized, reliable operations, and versatility and stability are good, The manual double spool brake valve to multiple rotation wheel emergency brakes simultaneously may be implemented.
To achieve the above object, the present invention uses following technical solutions: a kind of manual double spool brake valve, including Valve body, left spool, right spool, cover board, mandril, handle;It is characterized by: being provided with left valve opening, right valve opening, cover board on the valve body Hole, push plate hole, fuel feed hole, oil return hole, drainback passage, control port, screw hole, ears hinge hole, wherein the fuel feed hole packet Include left fuel feed hole, right fuel feed hole, the left fuel feed hole and the left valve opening vertical connection, the right fuel feed hole and the right valve opening Vertical connection, the drainback passage is vertical with the oil return hole to be communicated, and the control port includes left control port, right control oil Mouthful, the left control port and the left valve opening vertical connection, the right control port and the right valve opening vertical connection are described Push plate hole is slot, and the screw hole is stepped hole, and quantity is 4 and is circumferentially uniformly distributed;
The left spool includes axis one, axis two, inner hole one in the axial direction and the through-hole communicated vertical with inner hole one One, the left spool is mounted in the intracorporal left valve opening of the valve and can move along the axis direction of valve body;
The right spool includes axis three, axis four, inner hole two in the axial direction and the through-hole communicated vertical with inner hole two Two, the right spool is mounted in the intracorporal right valve opening of the valve and can move along the axis direction of the valve body;
The cover board is that shape is cylindrical, including circular hole one, threaded hole, circular hole two, the screw thread hole number are three And be circumferentially uniformly distributed, the cover board be mounted in the cover board hole of the valve body upper end after installing sealing ring additional and with the cover board Hole upper end is concordant;
The mandril includes ears hinge hole, axis five, axis six, axis seven, axis eight, and the mandril is mounted in the cover board Circular hole can move up and down together;
The handle left end is monaural hinge hole, and centre is double-U-shaped through-hole, on the monaural hinge hole and the valve body Ears hinge hole is connected by a hinge, and the ears hinge hole of the double-U-shaped through-hole and the mandril is connected by a hinge.
Preferred embodiment, further includes left blocking, right blocking, and the left blocking is mounted on returning for the valve body after installing sealing ring additional The left end in oily channel, it is described it is right blocking install additional sealing ring after be mounted on the valve body drainback passage right end.
Preferred embodiment further includes left compressed spring, right compressed spring, and it is intracorporal that the left compressed spring is mounted on the valve In left valve opening and with end in contact under the left spool;The right compressed spring be mounted in the intracorporal right valve opening of the valve and with institute State end in contact under right spool.
Preferred embodiment, further includes left valve opening blocking, the blocking of right valve opening, and the left valve opening blocking is mounted on after installing sealing ring additional The right valve opening lower end that the valve body is mounted on after sealing ring is installed in the left valve opening lower end of the valve body, the right valve opening blocking additional.
Preferred embodiment further includes push plate, and the push plate is that shape is cuboid, between being formed with the push plate hole in the valve body Gap cooperation, is provided with circular hole three and the identical circular hole four of symmetrical and diameter, circular hole five in the push plate, the circular hole four with Axis one in the left spool forms interference fit, and the circular hole five is formed with the axis three in the right spool to be interference fitted, institute The axis eight stated in circular hole three and the mandril forms interference fit.
Preferred embodiment further includes top plate, and the top plate is circular ring shape, the cover board hole formation gap of outer circle and the valve body Axis seven in cooperation, inner hole and the mandril forms clearance fit.
Preferred embodiment further includes upper compressed spring, and the upper compressed spring is mounted in the top plate and the valve body Between cover board hole.
Beneficial effect compared with the existing technology is that using the above scheme, manual double spool of the invention brakes valve arrangement Compact, reliable operation, versatility and stability are good, may be implemented to have good the emergency brake simultaneously of multiple rotation wheels Market application value.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the manual double spool brake valve in double loop of the present invention;
Fig. 2 is a kind of valve body schematic diagram of the manual double spool brake valve in double loop of the present invention;
Fig. 3 is a kind of left spool schematic diagram of the manual double spool brake valve in double loop of the present invention;
Fig. 4 is a kind of right spool schematic diagram of the manual double spool brake valve in double loop of the present invention;
Fig. 5 is a kind of cover plate schematic diagram of the manual double spool brake valve in double loop of the present invention;
Fig. 6 is a kind of mandril schematic diagram of the manual double spool brake valve in double loop of the present invention;
Fig. 7 is a kind of handle schematic diagram of the manual double spool brake valve in double loop of the present invention;
Fig. 8 is an a kind of Application Example of the manual double spool brake valve in double loop of the present invention.
Specific embodiment
To facilitate the understanding of the present invention, in the following with reference to the drawings and specific embodiments, the present invention will be described in more detail. A better embodiment of the invention is given in the attached drawing.But the invention can be realized in many different forms, and unlimited In this specification described embodiment.On the contrary, purpose of providing these embodiments is makes to the disclosure Understand more thorough and comprehensive.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to To another element or it may be simultaneously present centering elements.Term used in this specification " vertical ", " horizontal ", "left", "right" and similar statement are for illustrative purposes only.
Unless otherwise defined, technical and scientific term all used in this specification is led with technology of the invention is belonged to The normally understood meaning of the technical staff in domain is identical.Used term is only in the description of the invention in this specification The purpose of description specific embodiment is not intended to the limitation present invention.
As shown in Figure 1, the manual double spool brake valve in a kind of double loop of the present invention mainly includes valve body (1), left valve Core (2), right spool (9), cover board (14), mandril (11), handle (15);
As shown in Fig. 2, being provided with left valve opening (101), right valve opening (102), cover board hole (105), push plate hole on the valve body (104), fuel feed hole (P1, P2), oil return hole (T), drainback passage (103), control port (A, B), screw hole (106), ears hinge Chain hole (107), wherein the fuel feed hole (P1, P2) includes left fuel feed hole (P1), right fuel feed hole (P2), the left fuel feed hole (P1) described with left valve opening (101) vertical connection, the right fuel feed hole (P2) and right valve opening (102) vertical connection Drainback passage (103) is vertical with the oil return hole (T) to be communicated, and the control port (A, B) includes left control port (A), right control Liquefaction mouth (B), the left control port (A) and left valve opening (101) vertical connection, the right control port (B) with it is described Right valve opening (102) vertical connection, the push plate hole (104) are slot, and the screw hole (106) is stepped hole, quantity 4 It is a and be circumferentially uniformly distributed;
As shown in figure 3, described its character shape of left spool (2) is axis one (201), axis two (202), in the axial direction interior Hole one (204) and the through-hole one (203) communicated vertical with inner hole one (204), the left spool (2) are mounted on the valve body It (1) and can be mobile along the axis direction of valve body (1) in the left valve opening (101) in;
As shown in figure 4, described its character shape of right spool (9) is axis three (901), axis four (902), in the axial direction interior Hole two (904) and the through-hole two (903) communicated vertical with inner hole two (904), the right spool (9) are mounted on the valve body It (1) and can be mobile along the axis direction of the valve body (1) in the right valve opening (102) in;
As shown in figure 5, it is cylinder that the cover board (14), which is shape, characteristic size has circular hole one (1401), threaded hole (1402), circular hole two (1403), threaded hole (1402) quantity are three and are circumferentially uniformly distributed that the cover board (14) adds It is mounted on after dress sealing ring in the cover board hole (104) of the valve body (1) upper end and concordant with the cover board hole (104) upper end;
As shown in fig. 6, mandril (11) character shape mainly has ears hinge hole (1101), axis five (1102), axis six (1103), axis seven (1104), axis eight (1105), the mandril (11) are mounted on the circular hole one (1401) in the cover board (14) simultaneously It can move up and down;
As shown in fig. 7, handle (15) left end is monaural hinge hole (1501), centre is double-U-shaped through-hole (1502), institute It states monaural hinge hole (1501) to be connected by a hinge with the ears hinge hole (107) on the valve body (1), the double-U-shaped through-hole (1502) it is connected by a hinge with the ears hinge hole (1101) of the mandril (11);
Fig. 8 is an a kind of Application Example of the manual double spool brake valve in double loop of the present invention, and this application is real Example is applied to the front and back wheel of mechanism while being braked, in figure, C-rear-wheel;D-front-wheel;E-oil pump;F-accumulator;G-rear-wheel Oil machine brake gear;H-front-wheel oil machine brake gear.Its concrete principle is: by lower handle (15), mandril (11) drives top plate (13) it moves downward, pushes left spool (2), right spool (9) to move downward by push plate (10), the drainback passage in valve body (1) (103) it is blocked, the left fuel feed hole on through-hole one (203) and valve body (1) when mandril no longer moves, in left spool (2) (P1) it connects, control oil liquid is by oil pump (E) from through-hole one (203), the inner hole one in left fuel feed hole (P1), left spool (2) (204), the left valve opening (101) in valve body (1), left control port (A) enter rear-wheel oil machine brake gear (G), make rear service brake; Meanwhile the through-hole two (903) in right spool (9) and the right fuel feed hole (P2) on valve body (1) are connected, and control oil liquid by oil pump (E) From the through-hole two (903), inner hole two (904), the right valve opening (102) in valve body (1), right in right fuel feed hole (P2), right spool (9) Control port (B) enters front-wheel oil machine brake gear (H), makes front wheel brake, in braking process caused by compression shock by storing It can device (F) absorption.Release handle (15), in the effect of left compressed spring (4), right compressed spring (7), upper compressed spring (12) Under, left spool (2) and right spool (9) reset, and the left fuel feed hole (P1), right fuel feed hole (P2) oil circuit on valve body (1) are blocked, after Take turns oil liquid in oil machine brake gear (G) from valve body (1) left control port (A), left valve opening (101), on left spool (2) Inner hole one (204), through-hole one (203), the drainback passage (103) on valve body (1), oil return hole (T) outflow;Meanwhile front-wheel oil machine Oil liquid in brake gear (H) is from the right control port (B) on valve body (1), right valve opening (102), the inner hole two on right spool (9) (904), through-hole two (903), the drainback passage (103) on valve body (1), oil return hole (T) outflow, brake release.
It should be noted that Fig. 8 is only one embodiment of the present of invention, do not illustrate that the present invention only has this real Example is applied, limitation in any form not also is done to the present invention, for those skilled in the art, the present invention can have respectively Kind change and variation.Any simple modification to the above embodiments or equivalent change according to the technical essence of the invention Change, all of which are still within the scope of the technical scheme of the invention.

Claims (3)

1. a kind of manual double spool brake valve, including valve body (1), left spool (2), right spool (9), cover board (14), mandril (11), Handle (15);It is characterized by: being provided with left valve opening (101), right valve opening (102), cover board hole (105), push plate hole on the valve body (104), fuel feed hole (P1, P2), oil return hole (T), drainback passage (103), control port (A, B), screw hole (106), ears hinge Chain hole (107), wherein the fuel feed hole (P1, P2) includes left fuel feed hole (P1), right fuel feed hole (P2), the left fuel feed hole (P1) described with left valve opening (101) vertical connection, the right fuel feed hole (P2) and right valve opening (102) vertical connection Drainback passage (103) is vertical with the oil return hole (T) to be communicated, and the control port (A, B) includes left control port (A), right control Liquefaction mouth (B), the left control port (A) and left valve opening (101) vertical connection, the right control port (B) with it is described Right valve opening (102) vertical connection, the push plate hole (104) are slot, and the screw hole (106) is stepped hole, quantity 4 It is a and be circumferentially uniformly distributed;
The left spool (2) include axis one (201), axis two (202), inner hole one (204) in the axial direction and with inner hole one (204) through-hole one (203) vertically communicated, the left spool (2) are mounted on the left valve opening (101) in the valve body (1) Nei simultaneously It can be mobile along the axis direction of valve body (1);
The right spool (9) include axis three (901), axis four (902), inner hole two (904) in the axial direction and with inner hole two (904) through-hole two (903) vertically communicated, the right spool (9) are mounted on the right valve opening (102) in the valve body (1) Nei simultaneously It can be mobile along the axis direction of the valve body (1);
The cover board (14) is that shape is cylinder, including circular hole one (1401), threaded hole (1402), circular hole two (1403), institute It states threaded hole (1402) quantity and is three and is circumferentially uniformly distributed that the cover board (14) is mounted on the valve after installing sealing ring additional It is in the cover board hole (105) of body (1) upper end and concordant with the cover board hole (105) upper end;
The mandril (11) includes ears hinge hole (1101), axis five (1102), axis six (1103), axis seven (1104), axis eight (1105), the mandril (11) is mounted in the cover board (14) circular hole one (1401) can simultaneously move up and down;
Handle (15) left end is monaural hinge hole (1501), and centre is double-U-shaped through-hole (1502), the monaural hinge hole (1501) be connected by a hinge with the ears hinge hole (107) on the valve body (1), the double-U-shaped through-hole (1502) with it is described The ears hinge hole (1101) of mandril (11) is connected by a hinge;
It further include top plate (13), the top plate (13) is circular ring shape, cover board hole (105) formation of outer circle and the valve body (1) Clearance fit, inner hole form clearance fit with the axis seven (1104) in the mandril (11);It further include upper compressed spring (12), The upper compressed spring (12) is mounted between the cover board hole (105) in the top plate (13) and the valve body (1);
It further include left compressed spring (4), right compressed spring (7), the left compressed spring (4) is mounted in the valve body (1) In left valve opening (101) and with end in contact under the left spool (2);The right compressed spring (7) is mounted in the valve body (1) In right valve opening (102) and with end in contact under the right spool (9);
It further include push plate (10), it is cuboid that the push plate (10), which is shape, with push plate hole (104) shape in the valve body (1) At clearance fit, circular hole three (1002) and the identical circular hole four of symmetrical and diameter are provided on the push plate (10) (1001), the axis one (201) in circular hole five (1003), the circular hole four (1001) and the left spool (2), which is formed, to be interference fitted, Axis three (901) in the circular hole five (1003) and the right spool (9), which is formed, to be interference fitted, the circular hole three (1002) and institute The axis eight (1105) stated in mandril (11) forms interference fit;The diameter of the cover board hole (105) is greater than the push plate hole (104) Diameter, the left valve opening (101) and the right valve opening (102) are isodiametric hole.
2. a kind of manual double spool brake valve according to claim 1, which is characterized in that further include left blocking (3), right stifled It fills in (8), the left end of the drainback passage (103) of the valve body (1), the right side is mounted on after left blocking (3) the installation sealing ring The right end of the drainback passage (103) of the valve body (1) is mounted on after blocking (8) installation sealing ring.
3. a kind of manual double spool brake valve according to claim 1, which is characterized in that further include left valve opening blocking (5), Right valve opening blocks (6), and the left valve opening blocking (5) is mounted under the left valve opening (101) of the valve body (1) after installing sealing ring additional It holds, right valve opening (102) lower end of the valve body (1) is mounted on after right valve opening blocking (6) the installation sealing ring.
CN201710220941.XA 2017-04-06 2017-04-06 A kind of manual double spool brake valve Active CN106956671B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710220941.XA CN106956671B (en) 2017-04-06 2017-04-06 A kind of manual double spool brake valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710220941.XA CN106956671B (en) 2017-04-06 2017-04-06 A kind of manual double spool brake valve

Publications (2)

Publication Number Publication Date
CN106956671A CN106956671A (en) 2017-07-18
CN106956671B true CN106956671B (en) 2019-04-12

Family

ID=59484031

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710220941.XA Active CN106956671B (en) 2017-04-06 2017-04-06 A kind of manual double spool brake valve

Country Status (1)

Country Link
CN (1) CN106956671B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107740790B (en) * 2017-10-13 2019-08-20 华南理工大学 A kind of hydraulic valve

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1428173A (en) * 1973-03-12 1976-03-17 Dewandre Co Ltd C Dual brake valves
CN1207466A (en) * 1997-08-01 1999-02-10 张一民 Valve
CN2789090Y (en) * 2005-06-01 2006-06-21 常德信诚液压有限公司 Foot braker valve
CN201043541Y (en) * 2007-04-30 2008-04-02 江苏鼎晟液压有限公司 Foot control valve
CN104044572A (en) * 2014-06-24 2014-09-17 哈尔滨工业大学(威海) Double-acting electronically-controlled pneumatic braking valve and vehicle braking system
CN205036662U (en) * 2015-09-08 2016-02-17 襄阳彼勒液压机械有限公司 Double - circuit vary voltage formula hydraulic brake valve
CN105329230A (en) * 2014-08-11 2016-02-17 石勇 Novel air-pressure type automatic control valve
CN206766018U (en) * 2017-04-06 2017-12-19 许昌学院 A kind of manual double spool brake valve

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1428173A (en) * 1973-03-12 1976-03-17 Dewandre Co Ltd C Dual brake valves
CN1207466A (en) * 1997-08-01 1999-02-10 张一民 Valve
CN2789090Y (en) * 2005-06-01 2006-06-21 常德信诚液压有限公司 Foot braker valve
CN201043541Y (en) * 2007-04-30 2008-04-02 江苏鼎晟液压有限公司 Foot control valve
CN104044572A (en) * 2014-06-24 2014-09-17 哈尔滨工业大学(威海) Double-acting electronically-controlled pneumatic braking valve and vehicle braking system
CN105329230A (en) * 2014-08-11 2016-02-17 石勇 Novel air-pressure type automatic control valve
CN205036662U (en) * 2015-09-08 2016-02-17 襄阳彼勒液压机械有限公司 Double - circuit vary voltage formula hydraulic brake valve
CN206766018U (en) * 2017-04-06 2017-12-19 许昌学院 A kind of manual double spool brake valve

Also Published As

Publication number Publication date
CN106956671A (en) 2017-07-18

Similar Documents

Publication Publication Date Title
US20170108066A1 (en) Hydraulic anti-lock brake wheel cylinder and axle braking system
CN106956671B (en) A kind of manual double spool brake valve
CN204004614U (en) A kind of compound Pilot operated check valve
CN206766018U (en) A kind of manual double spool brake valve
CN202301250U (en) Ultrahigh pressure proportional relief valve
CN106976450B (en) A kind of brake valve
CN206871058U (en) A kind of brake valve
CN205277983U (en) Differential pneumatic cylinder
CN106926837B (en) A kind of double spool brake valve
CN103410537A (en) Safety valve
CN203347817U (en) Middle flow balance reversible lock
CN202690589U (en) Explosion-proof valve of cylinder
CN207297984U (en) Fluid pressure type automatic reverse check valve
CN204140959U (en) A kind of overlapping two
CN201269334Y (en) Overlapping-mounted one-way throttle valve
CN105422537B (en) Pressure-increasing overflow valve
CN205078288U (en) Protect case subassembly of two -way lock of group
CN201125893Y (en) Bidirectional balanced valve
CN214247857U (en) Hydraulic oil cylinder integrating balance valve into cylinder body
CN205173086U (en) Pressurization control mechanism of die casting machine
CN205064945U (en) Flow control valve with overvoltage protection
CN203946080U (en) Service brake change-over valve
CN204226321U (en) A kind of secondary loads control valve relief function being integrated in pilot valve
CN204921513U (en) One -way bi -pass inserted valve
CN202669035U (en) Slider supporting system of hydraulic machine

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20201224

Address after: 712000 3rd floor, building 9, West Yungu phase III, Fengxi new town, Xixian New District, Xi'an City, Shaanxi Province

Patentee after: Xi'an Hangyu Power Control Technology Co.,Ltd.

Address before: Weidu District Bayi Road Xuchang city Henan province 461000 No. 88

Patentee before: XUCHANG University

TR01 Transfer of patent right