CN103801957A - Clamp for circular tube - Google Patents

Clamp for circular tube Download PDF

Info

Publication number
CN103801957A
CN103801957A CN201410051521.XA CN201410051521A CN103801957A CN 103801957 A CN103801957 A CN 103801957A CN 201410051521 A CN201410051521 A CN 201410051521A CN 103801957 A CN103801957 A CN 103801957A
Authority
CN
China
Prior art keywords
rotary body
fixed
fixed station
push rod
support bar
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
Application number
CN201410051521.XA
Other languages
Chinese (zh)
Other versions
CN103801957B (en
Inventor
豆斌林
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.)
Zhuhai Valgi Technology Co ltd
Original Assignee
NANJING XIAGUANG NEW ENERGY TECHNOLOGY Co Ltd
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 NANJING XIAGUANG NEW ENERGY TECHNOLOGY Co Ltd filed Critical NANJING XIAGUANG NEW ENERGY TECHNOLOGY Co Ltd
Priority to CN201410051521.XA priority Critical patent/CN103801957B/en
Publication of CN103801957A publication Critical patent/CN103801957A/en
Application granted granted Critical
Publication of CN103801957B publication Critical patent/CN103801957B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
    • B23Q3/065—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding workpieces being specially deformable, e.g. made from thin-walled or elastic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
    • B23Q3/064—Work-clamping means adapted for holding workpieces having a special form or being made from a special material for holding elongated workpieces, e.g. pipes, bars or profiles

Abstract

The invention discloses a clamp for a circular tube. The clamp for the circular tube comprises a clamp platform and clamping devices. A rotating body is arranged on the clamp platform. The section of the rotating body is in the shape of a regular triangle. A through hole is formed in the center of the rotating body. An annular fixed platform is arranged in the through hole. The center of the section of the rotating body and the center of the section of the fixed platform coincide. The fixed platform is fixed to the clamp platform. The upper surface of the fixed platform and the upper surface of the rotating body are identical in height. The number of the clamping devices is three. The clamping devices are arranged on the upper surface of the fixed platform and the upper surface of the rotating body in an annular array mode. According to the clamp for the circular tube, the rotating body is driven by a pushing device to rotate in the clockwise direction; due to the fact that the three clamping devices are arranged on the fixed platform and the rotating body in the annular array mode, equal thrust is exerted on clamping jaws under the action of a directional platform through a first stay rod and a second stay rod when the rotating body rotates, the pressures exerted on the circular tube in all the directions are identical, the circular tube can be stably fixed, and the circular tube is prevented from deforming; in this way, the clamp for the circular tube is convenient to use and reliable.

Description

A kind of pipe fixture
Technical field
The present invention relates to clamp technology field, relate in particular to a kind of pipe fixture.
Background technology
In traditional industrial production process, often can need pipe to be fixed; conventionally fixing pipe is all to take three-jaw to support; then respectively each support claw is exerted pressure by support leg; but because the pressure of each support leg applies respectively; so be difficult to guarantee that the suffered pressure of each support claw is identical; the suffered pressure inequality of all directions that this just causes the lateral surface of steel pipe, probably can cause deformation, finally brings impact to producing.
Summary of the invention
in order to solve existing the problems referred to above, the invention provides a kind of pipe fixture, can make three jaws uniformly to will fixing pipe exert pressure and be fixed, and can not cause deformation.
Technical problem to be solved by this invention is achieved through the following technical solutions:
A kind of pipe fixture, it is characterized in that: comprise clamping fixture table, clamping device, described clamping fixture table is provided with rotary body, and the cross section of described rotary body is equilateral triangle, and centre is provided with through hole, in through hole, be provided with annular fixed station, the cross section of rotary body overlaps with the kernel of section of fixed station, and fixed station is fixed on clamping fixture table, and its upper surface is consistent with the upper level of rotary body, described clamping device quantity is three, arranges in the upper surface circular array of fixed station and rotary body.
Preferably, described clamping device comprises orientation device, the first support bar and the second support bar, in described orientation device, be provided with directed pipeline, the extended line of directed pipeline points to the ring heart in fixed station cross section, and one end of the first support bar is fixed on rotary body upper surface by rotating shaft, and the other end is connected by rotating shaft with one end of the second support bar, the second support bar stretches out from the inner side of fixed station through directed pipeline, and the other end of the second support bar is provided with arc jaw.
Preferably, outside a side of described rotary body, be provided with thrust unit, described thrust unit is fixed on clamping fixture table, and can promoting rotary body, to prolong clockwise rotation moving.
Preferably, described thrust unit comprises guide table, the first push rod and the second push rod, described guide table is fixed on clamping fixture table, institute's guide table is provided with guide duct, one end of the first push rod is connected with one end of the second push rod by rotating shaft through guide duct, the other end is provided with crank, and the other end of the second push rod is connected by rotating shaft with one side of rotary body, and the outside of the first push rod is provided with corresponding screw thread with the inner side of guide duct.
Preferably, the bottom of described turntable is provided with endless glide, and the ring heart of endless glide overlaps with the ring heart of annular fixed station, and the upper surface of described clamping fixture table is provided with the annular groove corresponding with endless glide.
The beneficial effect that the present invention reaches is: prolonged clockwise and rotated by thrust unit driven rotary body, so due to three clamping devices on fixed station and rotary body ringwise permutation setting rotary body in rotating can by under the first strut and the effect of the second strut at orientation device respectively to the equal thrust of jaw, make pipe suffered pressure in all directions identical, stable the fixing pipe and can not cause its deformation of energy, convenient and reliable.
Accompanying drawing explanation
Fig. 1 is plan structure schematic diagram of the present invention;
Fig. 2 is the structural representation of turntable bottom in the present invention;
Fig. 3 is the structural representation of clamping fixture table upper surface in the present invention.
The specific embodiment
In order to further describe technical characterstic of the present invention and effect, below in conjunction with the drawings and specific embodiments, the present invention is described further.
Referring to figs. 1 through Fig. 3, a kind of pipe fixture, comprise clamping fixture table 1, clamping device 2, described clamping fixture table 1 is provided with rotary body 3, the cross section of described rotary body 3 is equilateral triangle, centre is provided with through hole 8, in through hole 8, be provided with annular fixed station 4, the cross section of rotary body 3 overlaps with the kernel of section of fixed station 4, fixed station 4 is fixed on clamping fixture table 1, its upper surface is consistent with the upper level of rotary body 3, and described clamping device 2 quantity are three, arranges in the upper surface circular array of fixed station 4 and rotary body 3.
Further, described clamping device 2 comprises orientation device 21, the first support bar 22 and the second support bar 23, in described orientation device 21, be provided with directed pipeline, the extended line of directed pipeline points to the ring heart in fixed station cross section, and one end of the first support bar 22 is fixed on rotary body 3 upper surfaces by rotating shaft, and the other end is connected by rotating shaft with one end of the second support bar 23, the second support bar 23 stretches out from the inner side of fixed station 21 through directed pipeline, and the other end of the second support bar 23 is provided with arc jaw 24.
Further, outside a side of described rotary body 3, be provided with thrust unit 5, described thrust unit 5 is fixed on clamping fixture table 1, and can promoting rotary body 3, to prolong clockwise rotation moving.
Further, it is characterized in that: described thrust unit 5 comprises guide table 51, the first push rod 52 and the second push rod 53, described guide table 51 is fixed on clamping fixture table, institute's guide table 51 is provided with guide duct, one end of the first push rod 52 is connected with one end of the second push rod 53 by rotating shaft through guide duct, the other end that the other end is provided with crank 54, the second push rods 53 is connected by rotating shaft with one side of rotary body 3, and first outside of push rod 52 and the inner side of guide duct are provided with corresponding screw thread.
Further, the bottom of described turntable 3 is provided with endless glide 6, and the ring heart of endless glide 6 overlaps with the ring heart of annular fixed station, and the upper surface of described clamping fixture table 1 is provided with the annular groove corresponding with endless glide 67.
When use, pipe is arranged on to the center of fixed station 4, now make the first push rod 52 promote the second push rod 53 driven rotary bodies 3 by rotation crank 54 and be rotation clockwise, due to clamping device 2 circular array setting on fixed station 4 and rotary body 3, three the first support bars 22 drive length and the speed that arc jaw 24 stretches out to the center of fixed station all to equate, three arc jaws 24 pressure that each arc jaw 24 is applied on pipe sidewall when pipe fixed leg the most at last equates, what so not only press from both sides stablizes but also can not make pipe produce deformation, effect is good.
Above-described embodiment does not limit the present invention in any form, and all technical schemes of taking the form that is equal to replacement or equivalent transformation to obtain, within all dropping on protection scope of the present invention.

Claims (5)

1. a pipe fixture, it is characterized in that: comprise clamping fixture table (1), clamping device (2), described clamping fixture table (1) is provided with rotary body (3), the cross section of described rotary body (3) is equilateral triangle, centre is provided with through hole (8), in through hole (8), be provided with annular fixed station (4), the cross section of rotary body (3) overlaps with the kernel of section of fixed station (4), fixed station (4) is fixed on clamping fixture table (1), its upper surface is consistent with the upper level of rotary body (3), described clamping device (2) quantity is three, upper surface circular array at fixed station (4) and rotary body (3) arranges.
2. a kind of pipe fixture according to claim 1, it is characterized in that: described clamping device (2) comprises orientation device (21), the first support bar (22) and the second support bar (23), described orientation device is provided with directed pipeline in (21), the extended line of directed pipeline points to the ring heart in fixed station cross section, one end of the first support bar (22) is fixed on rotary body (3) upper surface by rotating shaft, the other end is connected by rotating shaft with the one end of the second support bar (23), the second support bar (23) stretches out from the inner side of fixed station (21) through directed pipeline, the other end of the second support bar (23) is provided with arc jaw (24).
3. a kind of pipe fixture according to claim 1, it is characterized in that: outside a side of described rotary body (3), be provided with thrust unit (5), it is upper that described thrust unit (5) is fixed on clamping fixture table (1), and can promoting rotary body (3), to prolong rotation clockwise moving.
4. a kind of pipe fixture according to claim 3, it is characterized in that: described thrust unit (5) comprises guide table (51), the first push rod (52) and the second push rod (53), described guide table (51) is fixed on clamping fixture table, institute's guide table (51) is provided with guide duct, one end of the first push rod (52) is connected with one end of the second push rod (53) by rotating shaft through guide duct, the other end is provided with crank (54), the other end of the second push rod (53) is connected by rotating shaft with one side of rotary body (3), the outside of the first push rod (52) is provided with corresponding screw thread with the inner side of guide duct.
5. a kind of pipe fixture according to claim 1, it is characterized in that: the bottom of described turntable (3) is provided with endless glide (6), the ring heart of endless glide (6) overlaps with the ring heart of annular fixed station, and the upper surface of described clamping fixture table (1) is provided with the annular groove (7) corresponding with endless glide (6).
CN201410051521.XA 2014-02-14 2014-02-14 Clamp for circular tube Active CN103801957B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410051521.XA CN103801957B (en) 2014-02-14 2014-02-14 Clamp for circular tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410051521.XA CN103801957B (en) 2014-02-14 2014-02-14 Clamp for circular tube

Publications (2)

Publication Number Publication Date
CN103801957A true CN103801957A (en) 2014-05-21
CN103801957B CN103801957B (en) 2017-05-24

Family

ID=50699599

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410051521.XA Active CN103801957B (en) 2014-02-14 2014-02-14 Clamp for circular tube

Country Status (1)

Country Link
CN (1) CN103801957B (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104999301A (en) * 2015-07-16 2015-10-28 佛山市普拉迪数控科技有限公司 Machine tool machining center with clamp special for long-bar-shaped workpiece
CN104999298A (en) * 2015-05-29 2015-10-28 天津沃尔德泰克机电有限公司 Automatic control clamping tool
CN106706674A (en) * 2017-03-03 2017-05-24 丹东东方测控技术股份有限公司 Adjustable neutron tube fixing device and method
CN106736640A (en) * 2016-12-06 2017-05-31 广州宁研机械设计有限公司 A kind of novel lathe rod-like members mechanical grip device
CN106736646A (en) * 2016-12-06 2017-05-31 广州宁研机械设计有限公司 A kind of lathe rod-like members mechanical grip device
CN106736735A (en) * 2016-12-06 2017-05-31 广州宁研机械设计有限公司 A kind of improved machine-tool rod-like members mechanical grip device
CN106826283A (en) * 2016-12-26 2017-06-13 安徽谢佑圣电子科技有限公司 A kind of fixing device of medical pipe class apparatus processing
CN107097086A (en) * 2017-05-05 2017-08-29 哈尔滨工业大学 Force feedback type cylindrical shape thin-wall member processing support device
CN107175597A (en) * 2017-06-24 2017-09-19 芜湖市泰能电热器具有限公司 A kind of auxiliary equipment processed for pipe
CN107314349A (en) * 2017-07-04 2017-11-03 苏州长鸿机械设备有限公司 A kind of LED energy-saving lamp devices
CN109516056A (en) * 2018-10-18 2019-03-26 刘凤海 A kind of clad type stablizes the straight tube flower-pot conveyer of laborsaving transport
CN109591128A (en) * 2018-11-22 2019-04-09 武汉绿时代创新科技有限公司 A kind of thick bamboo tube preparation facilities
CN109894299A (en) * 2019-04-10 2019-06-18 中机国际工程设计研究院有限责任公司 Steel pipe system of processing
CN112170942A (en) * 2020-09-27 2021-01-05 北华航天工业学院 Tensioning and positioning mechanism for cutting waste pile pipe
CN113061826A (en) * 2021-03-25 2021-07-02 湘潭大学 High-efficient hot dip galvanizing's device
CN113483028A (en) * 2021-07-05 2021-10-08 宣城职业技术学院 Multifunctional clamp for bearing manufacturing

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841647A (en) * 1973-01-10 1974-10-15 Pandjiris Weldment Co Self-centering chuck mechanism
DE3723822A1 (en) * 1987-07-18 1989-01-26 Leistritz Ag Driving clamping device
US20020092395A1 (en) * 1997-11-21 2002-07-18 Bernard Emilian Clamping device for a tubular component, especially by means of moveable jaws
JP2006095613A (en) * 2004-09-28 2006-04-13 Sanko:Kk Clamp device
CN202716071U (en) * 2012-06-04 2013-02-06 扬州诚德钢管有限公司 Self-centering hydraulic clamping device for tubular column part
CN204094505U (en) * 2014-02-14 2015-01-14 国家电网公司 A kind of pipe fixture

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3841647A (en) * 1973-01-10 1974-10-15 Pandjiris Weldment Co Self-centering chuck mechanism
DE3723822A1 (en) * 1987-07-18 1989-01-26 Leistritz Ag Driving clamping device
US20020092395A1 (en) * 1997-11-21 2002-07-18 Bernard Emilian Clamping device for a tubular component, especially by means of moveable jaws
JP2006095613A (en) * 2004-09-28 2006-04-13 Sanko:Kk Clamp device
CN202716071U (en) * 2012-06-04 2013-02-06 扬州诚德钢管有限公司 Self-centering hydraulic clamping device for tubular column part
CN204094505U (en) * 2014-02-14 2015-01-14 国家电网公司 A kind of pipe fixture

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104999298A (en) * 2015-05-29 2015-10-28 天津沃尔德泰克机电有限公司 Automatic control clamping tool
CN104999301A (en) * 2015-07-16 2015-10-28 佛山市普拉迪数控科技有限公司 Machine tool machining center with clamp special for long-bar-shaped workpiece
CN106736640A (en) * 2016-12-06 2017-05-31 广州宁研机械设计有限公司 A kind of novel lathe rod-like members mechanical grip device
CN106736646A (en) * 2016-12-06 2017-05-31 广州宁研机械设计有限公司 A kind of lathe rod-like members mechanical grip device
CN106736735A (en) * 2016-12-06 2017-05-31 广州宁研机械设计有限公司 A kind of improved machine-tool rod-like members mechanical grip device
CN106826283A (en) * 2016-12-26 2017-06-13 安徽谢佑圣电子科技有限公司 A kind of fixing device of medical pipe class apparatus processing
CN106706674A (en) * 2017-03-03 2017-05-24 丹东东方测控技术股份有限公司 Adjustable neutron tube fixing device and method
CN106706674B (en) * 2017-03-03 2023-04-11 丹东东方测控技术股份有限公司 Adjustable neutron tube fixing device and method
CN107097086A (en) * 2017-05-05 2017-08-29 哈尔滨工业大学 Force feedback type cylindrical shape thin-wall member processing support device
CN107175597A (en) * 2017-06-24 2017-09-19 芜湖市泰能电热器具有限公司 A kind of auxiliary equipment processed for pipe
CN107314349B (en) * 2017-07-04 2018-08-14 常州泉晋光电有限公司 A kind of LED energy-saving lamp devices
CN107314349A (en) * 2017-07-04 2017-11-03 苏州长鸿机械设备有限公司 A kind of LED energy-saving lamp devices
CN109516056A (en) * 2018-10-18 2019-03-26 刘凤海 A kind of clad type stablizes the straight tube flower-pot conveyer of laborsaving transport
CN109591128A (en) * 2018-11-22 2019-04-09 武汉绿时代创新科技有限公司 A kind of thick bamboo tube preparation facilities
CN109591128B (en) * 2018-11-22 2021-04-13 武汉绿时代创新科技有限公司 Bamboo tube preparation device
CN109894299A (en) * 2019-04-10 2019-06-18 中机国际工程设计研究院有限责任公司 Steel pipe system of processing
CN112170942A (en) * 2020-09-27 2021-01-05 北华航天工业学院 Tensioning and positioning mechanism for cutting waste pile pipe
CN113061826A (en) * 2021-03-25 2021-07-02 湘潭大学 High-efficient hot dip galvanizing's device
CN113483028A (en) * 2021-07-05 2021-10-08 宣城职业技术学院 Multifunctional clamp for bearing manufacturing
CN113483028B (en) * 2021-07-05 2022-07-15 宣城职业技术学院 Multifunctional clamp for bearing manufacturing

Also Published As

Publication number Publication date
CN103801957B (en) 2017-05-24

Similar Documents

Publication Publication Date Title
CN103801957A (en) Clamp for circular tube
CN203330739U (en) Connecting rod type centering and clamping device
CN208787576U (en) A kind of pipe fitting end support device with calibration function
CN105499623A (en) Pipe stabilizing and rotating device
CN204094505U (en) A kind of pipe fixture
CN205147895U (en) Fluid pressure type tubular product clamping device
CN203030687U (en) Pipe bending device
CN204220674U (en) The multi-functional conehead of uncoiler and coiling machine
CN204150687U (en) Ring gripping body
CN104505364A (en) Wafer-rotatable clamping device
CN203804001U (en) Manual bending device for spiral copper pipes
CN203831010U (en) Adjustable eight-angle supporting tool
CN204621810U (en) A kind of novel touch screen CNC grinding wheel head structure
CN102172840A (en) Concentric circle telescopic ring
CN202507158U (en) Stainless steel tube inner bore polishing machine
CN104369407A (en) Cupping press
CN202922142U (en) Fixing device for welding of drill bit
CN204868900U (en) Robot unit
CN203751003U (en) Centering roller device of gap-adjustable gear connecting rod mechanism
CN204235909U (en) A kind of cupping press
CN204280486U (en) Rod and tube kind materials processing bracing or strutting arrangement
CN204339635U (en) A kind of gradient checkout gear
CN204018467U (en) Pipeline flange fixing installation
CN104959796B (en) Self-centering tooling dummy shaft is adjusted
CN202790373U (en) Transmission shaft sleeve

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20170401

Address after: 322100 Zhejiang, Jinhua Baiyun Street, World Trade Center, No. 505 Ward business center, room A, block, room

Applicant after: Yu Quanfeng

Address before: Longtan Street Shugang road in Qixia District of Nanjing City, Jiangsu province 210046 No. 1 Longtan logistics base 5-258

Applicant before: NANJING XIAGUANG NEW ENERGY TECHNOLOGY Co.,Ltd.

CB03 Change of inventor or designer information

Inventor after: Li Xiaorong

Inventor after: Zhao Guangtao

Inventor after: Han Tao

Inventor after: Li Ming

Inventor before: Dou Binlin

CB03 Change of inventor or designer information
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20170421

Address after: 519125 Guangdong Province, Zhuhai city Doumen District Baijiao town two new road No. 26 (building three) 1 floor three

Applicant after: ZHUHAI WA'ERJI PRECISION MACHINERY CO.,LTD.

Address before: 322100 Zhejiang, Jinhua Baiyun Street, World Trade Center, No. 505 Ward business center, room A, block, room

Applicant before: Yu Quanfeng

GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20240131

Address after: 519000 No. 8 Bingfangshan, Xipu Village, Jing'an Town, Doumen District, Zhuhai City, Guangdong Province (Factory Building F)

Patentee after: Zhuhai Valgi Technology Co.,Ltd.

Country or region after: China

Address before: 519125 3rd floor, No.26 Xinke 2nd Road, Baijiao Town, Doumen District, Zhuhai City, Guangdong Province

Patentee before: ZHUHAI WA'ERJI PRECISION MACHINERY CO.,LTD.

Country or region before: China