CN104439852A - Positioning device for vehicle top welding tool and vehicle top welding tool - Google Patents
Positioning device for vehicle top welding tool and vehicle top welding tool Download PDFInfo
- Publication number
- CN104439852A CN104439852A CN201410814608.8A CN201410814608A CN104439852A CN 104439852 A CN104439852 A CN 104439852A CN 201410814608 A CN201410814608 A CN 201410814608A CN 104439852 A CN104439852 A CN 104439852A
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- Prior art keywords
- rotating shaft
- roof
- connection block
- support arm
- welding tooling
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
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- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
Abstract
The invention provides a positioning device for a vehicle top welding tool and the vehicle top welding tool. The positioning device for the vehicle top welding tool comprises a base, a rotating part and a pressing system, wherein the base is used for being connected with the vehicle top welding tool, and a rotating shaft is arranged on the base in a vertical direction; the rotating shaft is sleeved with the rotating part which is rotationally connected with the rotating shaft through a first bearing, a plurality of support arms are connected to the rotating part, the axes of the support arms are perpendicular to the axis of the rotating shaft, set angles are formed among the support arms, mounting surfaces are arranged on the support arms and used for mounting positioning blocks, and the rotating part is positioned with the rotating shaft through a first positioner; the pressing system is connected to the rotating shaft and used for applying force to the edge top of a vehicle top and is matched with the positioning blocks so as to clamp the edge top and position the vehicle top. According to the positioning device for the vehicle top welding tool and the vehicle top welding tool, the universality is high, and the production cost of a rail vehicle can be reduced.
Description
Technical field
The present invention relates to rail vehicle production equipment technology, particularly relate to a kind of roof welding tooling positioner and roof welding tooling.
Background technology
In track vehicle production process, the assemble welding for the roof of rail vehicle is important link, and roof forms with middle flat-top or dome primarily of the top, limit of both sides.
The main roof welding tooling that adopts carries out assemble welding work to roof at present, existing roof welding tooling comprises two longerons be arranged in parallel, width along longeron between two longerons is provided with crossbeam, crossbeam two ends are provided with positioner to position top, the limit of roof, and positioner is according to a kind of vibrational power flow of vehicle roof.
Because the section configuration of the roof of different automobile types is different, and the positioner of existing roof welding tooling cannot realize the location to different roof, and therefore versatility is poor, adds the production cost of rail vehicle.
Summary of the invention
The invention provides a kind of roof welding tooling positioner and roof welding tooling, to improve versatility, reduce the production cost of rail vehicle.
One aspect of the present invention provides a kind of roof welding tooling positioner, comprising:
Base, described base is used for being connected with the crossbeam of roof welding tooling, and described base is provided with rotating shaft, and described rotating shaft is used for vertically arranging;
Tumbler, described tumbler is set in described rotating shaft, and be connected with described axis of rotation by clutch shaft bearing, described tumbler is connected with multiple support arm, the axes normal of described support arm, in the axis of described rotating shaft, is formed with set angle between described support arm, and described support arm is provided with installed surface, for installing locating piece, described tumbler is used for being located by the first locator and described rotating shaft;
Pressing system, is connected in described rotating shaft, for top, the limit force to roof, and coordinates to clamp top, described limit with described locating piece, locates to make described roof.
The present invention provides a kind of roof welding tooling on the other hand, comprising:
Two parallel and spaced longerons, the length direction along described longeron between two described longerons is arranged at intervals with multiple crossbeam, and described crossbeam is arranged along the width of described longeron, and the two ends of described crossbeam are connected with two described longerons respectively;
Roof welding tooling positioner provided by the present invention, described base is connected with described crossbeam.
Based on above-mentioned, roof welding tooling positioner provided by the invention and roof welding tooling, in use, the locating piece being applicable to different model roof location can be installed on the installed surface of each support arm, because tumbler is set in rotating shaft, and be connected with axis of rotation by clutch shaft bearing, therefore, when needing to position the roof of certain model, only need rotary motion part, the locating piece being applicable to this model roof location is adjusted to the position can matched with pressing system, and tumbler is located by the first locator and rotating shaft, the top, limit that just can clamp roof is coordinated afterwards by pressing system and locating piece, roof is located, when needing to position the roof of another model, only need rotary motion part, the locating piece being applicable to this model roof location is adjusted to the position can matched with pressing system, is coordinated the top, limit that just can clamp roof afterwards by pressing system and locating piece, roof is located.The location to different model roof can be realized thus, improve the versatility of positioner, reduce the production cost of rail vehicle, simultaneously fast easy to adjust.In addition, the locating piece being applicable to welding location, roof front also can be installed on the installed surface of a support arm, the installed surface of another support arm is installed the locating piece being applicable to roof reverse side welding location, make positioner all can position roof when the welding of roof front and the welding of roof reverse side thus, improve efficiency of construction, reduce the production cost of rail vehicle.
Accompanying drawing explanation
Fig. 1 provides a kind of structural representation of roof welding tooling positioner for the embodiment of the present invention;
Fig. 2 provides a kind of part sectioned view of roof welding tooling positioner for the embodiment of the present invention;
Fig. 3 provides a kind of structural representation of roof welding tooling for the embodiment of the present invention.
Reference numeral:
100: positioner; 101: base; 102: rotating shaft;
103: tumbler; 104: clutch shaft bearing; 105: support arm;
106: installed surface; 107: the first locators; 108: connecting axle;
109: the second bearings; 110: the second locators; 111: the first hold down gags;
112: the first Connection Blocks; 113: linking arm; 114: pars contractilis;
115: the first retractor devices; 116: connecting portion; 117: the second hold down gags;
118: the second Connection Blocks; 119: the second retractor devices; 120: alignment pin;
201: crossbeam; 301: locating piece; 401: longeron.
Detailed description of the invention
Please refer to Fig. 1-3, the embodiment of the present invention provides a kind of roof welding tooling positioner 100, comprising: base 101, and described base 101 is for being connected with the crossbeam 201 of roof welding tooling, described base 101 is provided with rotating shaft 102, and described rotating shaft 102 is for vertically arranging; Tumbler 103, described tumbler 103 is set in described rotating shaft 102, and be rotationally connected by clutch shaft bearing 104 and described rotating shaft 102, described tumbler 103 is connected with multiple support arm 105, the axes normal of described support arm 105, in the axis of described rotating shaft 102, is formed with set angle between described support arm 105, and described support arm 105 is provided with installed surface 106, for installing locating piece 301, described tumbler 103 is for locating with described rotating shaft 102 by the first locator 107; Pressing system, is connected in described rotating shaft 102, for top, the limit force to roof, and coordinates to clamp top, described limit with described locating piece 301, locates to make described roof.
In the present embodiment, in use, the locating piece 301 being applicable to different model roof location can be installed on the installed surface 106 of each support arm 105, because tumbler 103 is set in rotating shaft 102, and be rotationally connected by clutch shaft bearing 104 and rotating shaft 102, therefore, when needing to position the roof of certain model, only need rotary motion part 103, the locating piece 301 being applicable to this model roof location is adjusted to the position can matched with pressing system, and tumbler 103 is located with rotating shaft 102 by the first locator 107, the top, limit that just can clamp roof is coordinated afterwards by pressing system and locating piece 301, roof is located, when needing to position the roof of another model, only need rotary motion part 103, the locating piece 301 being applicable to this model roof location is adjusted to the position can matched with pressing system, coordinated the top, limit that just can clamp roof afterwards by pressing system and locating piece 301, roof is located.The location to different model roof can be realized thus, improve the versatility of positioner 100, reduce the production cost of rail vehicle, simultaneously fast easy to adjust.In addition, the locating piece 301 being applicable to welding location, roof front also can be installed on the installed surface 106 of a support arm 105, the installed surface 106 of another support arm 105 is installed the locating piece 301 being applicable to roof reverse side welding location, make positioner 100 all can position roof when the welding of roof front and the welding of roof reverse side thus, improve efficiency of construction, reduce the production cost of rail vehicle.Wherein, the set angle formed between support arm 105 can be 90 degree, also can be other angles, as long as to make between support arm 105 without interruption.In addition, the first locator 107 can adopt fast insert-pull pin, and by inserting the jack on tumbler 103 and base 101, thus tumbler 103 and rotating shaft 102 are located, certain first locator 107 also can be other devices such as latch fitting, holding part.
In the present embodiment, preferably, support arm 105 is rotationally connected with tumbler 103 by connecting axle 108 and the second bearing 109, the axis of described connecting axle 108 and the axes normal of described rotating shaft 102, multiple sides of described support arm 105 are provided with described installed surface 106, the axis of the parallel described connecting axle 108 in described side, described support arm 105 is for locating with described tumbler 103 by the second locator 110.Thus, the locating piece 301 being applicable to different model roof location or the locating piece 301 being applicable to roof front, reverse side welding location can be installed on the installed surface 106 of each side, support arm 105 can be made afterwards to rotate relative to tumbler 103, the locating piece 301 needed is adjusted to the position can matched with pressing system, and support arm 105 is located with tumbler 103 by the second locator 110, coordinated the top, limit that just can clamp roof afterwards by pressing system and locating piece 301, roof is located.Because positioner 100 is provided with more installed surface 106, therefore, it is possible to install more kinds of locating pieces 301, thus the location of the roof of more polytypic can be suitable for, further increase the versatility of positioner 100, reduce the production cost of rail vehicle.Wherein, the second locator 110 can adopt fast insert-pull pin, and by inserting the jack on support arm 105 and tumbler 103, thus support arm 105 and tumbler 103 are located, certain second locator 110 also can be other devices such as latch fitting, holding part.
In the present embodiment, preferably, the second bearing 109 is right-angled intersection roller bearing.Because the stress performance of right-angled intersection roller bearing is better, therefore can prevent support arm 105 from producing deflection and use, which thereby enhance the reliability that positioner 100 uses.
In the present embodiment, preferably, the side that two of support arm 105 are relative is provided with installed surface 106, in use, support arm 105 can be carried out 180 degree of rotations relative to tumbler 103, to realize the conversion of locating piece 301, because locating piece 301 is arranged on the relative side of two of support arm 105, therefore operates and be not easily interfered.
In the present embodiment, preferably, described pressing system comprises the first hold down gag 111, described first hold down gag 111 comprises: the first Connection Block 112, described first Connection Block 112 is set in described rotating shaft 102, described first Connection Block 112 can sliding axially along described rotating shaft 102, and can rotate around described rotating shaft 102, and described first Connection Block 112 is for locating by the first keeper and described rotating shaft 102, telescopic arm, comprise linking arm 113, described linking arm 113 by the first bearing pin and described first Connection Block 112 hinged, described first bearing pin is arranged perpendicular to the axis of described rotating shaft 102, described linking arm 113 is for locating by the second keeper and described first Connection Block 112, and the pars contractilis 114 of described telescopic arm is flexible to be arranged on described linking arm 113, first retractor device 115, comprise connecting portion 116, described connecting portion 116 by the second bearing pin and described pars contractilis 114 hinged, described second bearing pin respectively with the axis of described telescopic arm and the axis perpendicular of described rotating shaft 102, described connecting portion 116 is for locating by the 3rd keeper and described pars contractilis 114, the telescopic end of described first retractor device 115 is flexible to be arranged on described connecting portion 116, the telescopic end of described first retractor device 115 is used at least stretching along the axial direction being parallel to described rotating shaft 102, by coordinating to clamp top, described limit with described locating piece 301.Because the first Connection Block 112 can sliding axially along rotating shaft 102, and 102 can to rotate around the shaft, and can be located by the first keeper and rotating shaft 102; Telescopic arm can rotate relative to the first Connection Block 112 around the first bearing pin, and can be located by the second keeper and the first Connection Block 112, and pars contractilis 114 can stretch relative to linking arm 113; First retractor device 115 can rotate relative to telescopic arm around the second bearing pin, and can be located by the 3rd keeper and pars contractilis 114, and the telescopic end of the first retractor device 115 can stretch relative to connecting portion 116, therefore the force direction of the telescopic end of the first retractor device 115 can be adjusted easily, to be applicable to the radian on the top, limit of each model roof, thus can effectively clamp by opposite side jacking row, and then it is reliable that roof is located.Wherein, the first keeper, the second keeper and the 3rd keeper can adopt bolt, and realize compressing location or clamping and positioning by screwing bolts, certain first keeper, the second keeper and the 3rd keeper also can adopt other devices such as latch fitting, holding part.In addition, the linking arm 113 of telescopic arm can be cylindrical shell, the pars contractilis 114 of telescopic arm can be plugged in cylindrical shell, and cylindrical shell is provided with screw, is equipped with bolt in screw, pars contractilis 114 can be made to stretch relative to linking arm 113, and by screwing bolts, the termination of bolt is contacted with pars contractilis 114, interfere to be formed pars contractilis 114, make pars contractilis 114 and linking arm 113 relative positioning, certain telescopic arm also can adopt other retractor devices such as hydraulic means or screw rod.First retractor device 115 can adopt screw rod or hydraulic means etc.
In the present embodiment, preferably, described pressing system also comprises the second hold down gag 117, described second hold down gag 117 comprises: the second Connection Block 118, described second Connection Block 118 is set in described rotating shaft 102, described second Connection Block 118 can sliding axially along described rotating shaft 102, and can rotate around described rotating shaft 102, and described second Connection Block 118 is for locating by the 4th keeper and described rotating shaft 102; Second retractor device 119, is connected with described second Connection Block 118, and the telescopic end of described second retractor device 119 is used for stretching along the axial direction perpendicular to described rotating shaft 102, by coordinating to clamp top, described limit with described locating piece 301.Because the second Connection Block 118 can sliding axially along rotating shaft 102, and 102 can to rotate around the shaft, and can be located by the 4th keeper and rotating shaft 102, thus the force direction of the telescopic end of the second retractor device 119 can be adjusted easily.Wherein, the 4th keeper can adopt bolt, realizes compression located clamping and positioning by screwing bolts, and certain 4th keeper also can adopt other devices such as latch fitting, holding part.In addition, telescopic end due to the second retractor device 119 is used for stretching along the axial direction perpendicular to rotating shaft 102, and the telescopic end of the first retractor device 115 is used at least stretching along the axial direction being parallel to rotating shaft 102, therefore can from gripper edge top both direction, to make the location of roof more reliable.Second retractor device 119 can adopt screw rod or hydraulic means etc.
In the present embodiment, preferably, installed surface 106 is provided with multiple alignment pin 120, has setpoint distance between multiple described alignment pin 120, described alignment pin 120 for penetrating in the locating hole of described locating piece 301, to determine the installation site of described locating piece 301.Thus, alignment pin 120 can be made to play the effect of locating piece 301 reference for installation, make the installation of locating piece 301 accurately more convenient, the setpoint distance wherein between alignment pin 120 can be determined according to the position of the locating hole on certain model locating piece 301.
The embodiment of the present invention provides a kind of roof welding tooling, comprise: two parallel and spaced longerons 401401, length direction along described longeron 401 between two described longerons 401 is arranged at intervals with multiple crossbeam 201, described crossbeam 201 is arranged along the width of described longeron 401, and the two ends of described crossbeam 201 respectively longeron 401 described with two are connected; Roof welding tooling positioner 100 described in any embodiment of the present invention, described base 101 is connected with described crossbeam 201.
In the present embodiment, in use, the locating piece 301 being applicable to different model roof location can be installed on the installed surface 106 of each support arm 105, because tumbler 103 is set in rotating shaft 102, and be rotationally connected by clutch shaft bearing 104 and rotating shaft 102, therefore, when needing to position the roof of certain model, only need rotary motion part 103, the locating piece 301 being applicable to this model roof location is adjusted to the position can matched with pressing system, and tumbler 103 is located with rotating shaft 102 by the first locator 107, the top, limit that just can clamp roof is coordinated afterwards by pressing system and locating piece 301, roof is located, when needing to position the roof of another model, only need rotary motion part 103, the locating piece 301 being applicable to this model roof location is adjusted to the position can matched with pressing system, coordinated the top, limit that just can clamp roof afterwards by pressing system and locating piece 301, roof is located.The location to different model roof can be realized thus, improve the versatility of positioner 100, reduce the production cost of rail vehicle, simultaneously fast easy to adjust.In addition, the locating piece 301 being applicable to welding location, roof front also can be installed on the installed surface 106 of a support arm 105, the installed surface 106 of another support arm 105 is installed the locating piece 301 being applicable to roof reverse side welding location, make positioner 100 all can position roof when the welding of roof front and the welding of roof reverse side thus, improve efficiency of construction, reduce the production cost of rail vehicle.Wherein, the set angle formed between support arm 105 can be 90 degree, also can be other angles, as long as to make between support arm 105 without interruption.In addition, the first locator 107 can adopt fast insert-pull pin, and by inserting the jack on tumbler 103 and base 101, thus tumbler 103 and rotating shaft 102 are located, certain first locator 107 also can be other devices such as latch fitting, holding part.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (8)
1. a roof welding tooling positioner, is characterized in that, comprising:
Base, described base is used for being connected with the crossbeam of roof welding tooling, and described base is provided with rotating shaft, and described rotating shaft is used for vertically arranging;
Tumbler, described tumbler is set in described rotating shaft, and be connected with described axis of rotation by clutch shaft bearing, described tumbler is connected with multiple support arm, the axes normal of described support arm, in the axis of described rotating shaft, is formed with set angle between described support arm, and described support arm is provided with installed surface, for installing locating piece, described tumbler is used for being located by the first locator and described rotating shaft;
Pressing system, is connected in described rotating shaft, for top, the limit force to roof, and coordinates to clamp top, described limit with described locating piece, locates to make described roof.
2. roof welding tooling positioner according to claim 1, it is characterized in that, described support arm is rotationally connected by connecting axle and the second bearing and described tumbler, the axis of described connecting axle and the axes normal of described rotating shaft, multiple sides of described support arm are provided with described installed surface, the axis of the parallel described connecting axle in described side, described support arm is used for being located by the second locator and described tumbler.
3. roof welding tooling positioner according to claim 2, is characterized in that, described second bearing is right-angled intersection roller bearing.
4. roof welding tooling positioner according to claim 2, is characterized in that, the side that two of described support arm are relative is provided with described installed surface.
5. roof welding tooling positioner according to claim 1, it is characterized in that, described pressing system comprises the first hold down gag, and described first hold down gag comprises:
First Connection Block, described first Connection Block is set in described rotating shaft, and described first Connection Block can sliding axially along described rotating shaft, and can rotate around described rotating shaft, and described first Connection Block is used for being located by the first keeper and described rotating shaft;
Telescopic arm, comprise linking arm, described linking arm by the first bearing pin and described first Connection Block hinged, described first bearing pin is arranged perpendicular to the axis of described rotating shaft, described linking arm is used for being located by the second keeper and described first Connection Block, and the pars contractilis of described telescopic arm is flexible to be arranged on described linking arm;
First retractor device, comprise connecting portion, described connecting portion by the second bearing pin and described pars contractilis hinged, described second bearing pin respectively with the axis of described telescopic arm and the axis perpendicular of described rotating shaft, described connecting portion is used for being located by the 3rd keeper and described pars contractilis, the telescopic end of described first retractor device is flexible to be arranged on described connecting portion, the telescopic end of described first retractor device is used at least stretching along the axial direction being parallel to described rotating shaft, by coordinating to clamp top, described limit with described locating piece.
6. roof welding tooling positioner according to claim 5, it is characterized in that, described pressing system also comprises the second hold down gag, and described second hold down gag comprises:
Second Connection Block, described second Connection Block is set in described rotating shaft, and described second Connection Block can sliding axially along described rotating shaft, and can rotate around described rotating shaft, and described second Connection Block is used for being located by the 4th keeper and described rotating shaft;
Second retractor device, is connected with described second Connection Block, and the telescopic end of described second retractor device is used for stretching along the axial direction perpendicular to described rotating shaft, by coordinating to clamp top, described limit with described locating piece.
7. roof welding tooling positioner according to claim 1, it is characterized in that, described installed surface is provided with multiple alignment pin, between multiple described alignment pin, there is setpoint distance, described alignment pin for penetrating in the locating hole of described locating piece, to determine the installation site of described locating piece.
8. a roof welding tooling, comprising:
Two parallel and spaced longerons, the length direction along described longeron between two described longerons is arranged at intervals with multiple crossbeam, and described crossbeam is arranged along the width of described longeron, and the two ends of described crossbeam are connected with two described longerons respectively;
According to described roof welding tooling positioner arbitrary in claim 1-7, described base is connected with described crossbeam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410814608.8A CN104439852B (en) | 2014-12-23 | 2014-12-23 | Roof welding tooling positioner and roof welding tooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410814608.8A CN104439852B (en) | 2014-12-23 | 2014-12-23 | Roof welding tooling positioner and roof welding tooling |
Publications (2)
| Publication Number | Publication Date |
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| CN104439852A true CN104439852A (en) | 2015-03-25 |
| CN104439852B CN104439852B (en) | 2016-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410814608.8A Active CN104439852B (en) | 2014-12-23 | 2014-12-23 | Roof welding tooling positioner and roof welding tooling |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105081645A (en) * | 2015-08-31 | 2015-11-25 | 南车株洲电力机车有限公司 | Beam clamping and fixing device |
| CN106737290A (en) * | 2016-12-26 | 2017-05-31 | 中国科学院物理研究所 | A kind of rotatable clamp |
| CN107234350A (en) * | 2017-07-06 | 2017-10-10 | 华工法利莱切焊系统工程有限公司 | Portal frame may be reversed |
| CN109158813A (en) * | 2018-09-26 | 2019-01-08 | 中车唐山机车车辆有限公司 | Welding tooling |
| CN111230389A (en) * | 2020-03-20 | 2020-06-05 | 涡阳县信隆船舶附件有限公司 | Cabin cover welding tool |
| CN112025075A (en) * | 2020-08-03 | 2020-12-04 | 南京中车浦镇城轨车辆有限责任公司 | Tram roof friction stir welding frock |
| CN112139746A (en) * | 2020-09-23 | 2020-12-29 | 中国兵器工业集团航空弹药研究院有限公司 | Multi-structure frame combined welding tool fixture |
| CN115430965A (en) * | 2022-11-08 | 2022-12-06 | 天津航天长征技术装备有限公司 | Clamping and positioning device for bottom of large carrier rocket tank |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109158813A (en) * | 2018-09-26 | 2019-01-08 | 中车唐山机车车辆有限公司 | Welding tooling |
| CN111230389A (en) * | 2020-03-20 | 2020-06-05 | 涡阳县信隆船舶附件有限公司 | Cabin cover welding tool |
| CN112025075A (en) * | 2020-08-03 | 2020-12-04 | 南京中车浦镇城轨车辆有限责任公司 | Tram roof friction stir welding frock |
| CN112139746A (en) * | 2020-09-23 | 2020-12-29 | 中国兵器工业集团航空弹药研究院有限公司 | Multi-structure frame combined welding tool fixture |
| CN115430965A (en) * | 2022-11-08 | 2022-12-06 | 天津航天长征技术装备有限公司 | Clamping and positioning device for bottom of large carrier rocket tank |
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| Publication number | Publication date |
|---|---|
| CN104439852B (en) | 2016-02-10 |
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Address after: 063035 Hebei province Fengrun District Tangshan City Road No. 3 factory Patentee after: CRRC TANGSHAN CO., LTD. Address before: 063035 Hebei province Fengrun District Tangshan City Road No. 3 factory Patentee before: Tangshan Railway Carriage Co., Ltd. |