CN107863244B - Assembly tool for assembling isolation transformer core of steel rail grinding wagon - Google Patents
Assembly tool for assembling isolation transformer core of steel rail grinding wagon Download PDFInfo
- Publication number
- CN107863244B CN107863244B CN201711387310.3A CN201711387310A CN107863244B CN 107863244 B CN107863244 B CN 107863244B CN 201711387310 A CN201711387310 A CN 201711387310A CN 107863244 B CN107863244 B CN 107863244B
- Authority
- CN
- China
- Prior art keywords
- explorator
- positioning
- support columns
- lamination
- core
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0233—Manufacturing of magnetic circuits made from sheets
Abstract
The invention discloses an assembly tool for assembling an isolation transformer core of a rail grinding wagon, which comprises a horizontally arranged lamination platform, a plurality of support columns, a plurality of end explorator, a plurality of side explorator, a plurality of positioning rods and a plurality of regulators, wherein the support columns are arranged on the top surface of the lamination platform and are used for supporting a core column, the end explorator is used for positioning the end surface of the core column, the side explorator is used for positioning the side surface of the core column, the positioning rods are used for positioning an iron yoke, the regulators are used for regulating the height of a clamping piece, two opposite end explorator are respectively arranged at two ends of two rows of support columns positioned at two sides of the lamination platform, one end explorator is arranged at one end of one row of support columns positioned in the. The positioning of the end face and the side face of the core column is realized through the end explorator and the side explorator, the positioning of the iron yoke is realized through the positioning rod, the height of the clamping piece is adjusted through the adjuster, and in the assembling process, each lamination of the core column is tightly attached to the end explorator and the side explorator, so that the assembling precision is ensured, the working efficiency is improved, and the workload is reduced.
Description
Technical Field
The invention relates to the field of assembly, in particular to an assembly tool for assembling an isolation transformer core of a steel rail grinding wagon.
Background
The rail grinding wagon is a common vehicle for rail transit, the working safety and stability of the rail grinding wagon play a crucial role in the normal operation of rail transit, and the isolation transformer is a reused component for ensuring the operation of the rail grinding wagon.
The iron core structure of rail grinding wagon isolation transformer is different from current transformer core structure, and the main difference lies in that the stem adopts multistage cylinder formula, and the terminal surface of stem is the plane promptly, and the side is multistage ladder face, forms iron core frame through the mode that sets up three stem between last indisputable yoke and lower indisputable yoke, and there is the air gap cushion block in iron yoke and stem terminal surface simultaneously, and indisputable yoke and stem overlap joint are amalgamated in an organic whole down. In the assembling process, the manual assembling is completely carried out, the core column cannot be guaranteed to be aligned in the stacking process, the equipment size is enabled to be deviated, meanwhile, the working efficiency is low, and the workload is huge.
Therefore, how to provide an assembly fixture for assembling the iron core of the isolation transformer of the rail grinding wagon and improve the assembly accuracy and the working efficiency are technical problems to be solved by technical personnel in the field at present.
Disclosure of Invention
The invention aims to provide an assembly tool for assembling an isolation transformer core of a steel rail grinding wagon, and the assembly accuracy and the working efficiency are improved.
In order to solve the technical problem, the invention provides an assembly tool for assembling an isolation transformer core of a rail grinding wagon, which comprises a horizontally arranged lamination table, a plurality of support columns and a plurality of end explorators, wherein the support columns are arranged on the top surface of the lamination table and used for supporting a core column, the end explorators are used for positioning the end surface of the core column, the clamp comprises a plurality of side explorator used for positioning the side face of a core column, a plurality of positioning rods used for positioning an iron yoke and a plurality of regulators used for regulating the height of a clamping piece, wherein a plurality of support columns are arranged in the middle and two sides of a lamination platform in three rows, two ends of the two support columns positioned on the two sides of the lamination platform are respectively provided with two opposite end explorators, one end of one support column positioned in the middle of the lamination platform is provided with the end exploratory, the other end of the support column is provided with the positioning rod, the side face of each support column is provided with the side exploratory, and two opposite end exploratory positioned on the two sides of the lamination platform are respectively provided with two regulators.
Preferably, the lamination table comprises two horizontally arranged and parallel cross beams and three horizontally arranged and parallel longitudinal beams, wherein the longitudinal beams are perpendicular to the cross beams, and the three longitudinal beams are uniformly arranged on the two cross beams.
Preferably, the three support columns are uniformly distributed on each longitudinal beam, two side explorator are arranged on the side surface of each longitudinal beam, and the two side explorator are respectively close to the two support columns at the two ends of the longitudinal beam.
Preferably, the two ends of the two longitudinal beams positioned at the two sides are respectively provided with the end explorator, one end of the longitudinal beam positioned at the middle part is provided with the end explorator, the end explorator is positioned at the joint of the cross beam and the longitudinal beam, and the positioning rod is arranged on the cross beam and positioned between the two adjacent longitudinal beams.
Preferably, the adjuster is provided at both ends of the two longitudinal beams on both sides and between the end fence and the support pillar.
Preferably, the end explorator is connected with the lamination table through a horizontally arranged end explorator mounting seat bolt, and the working surface of the end explorator is a vertical plane.
Preferably, the side profiling leans on mount pad bolted connection through the side of level setting the lamination platform, just the working face of side profiling is multistage ladder face.
Preferably, the cross beam is a square steel pipe, and the longitudinal beam is a steel plate.
Preferably, the adjuster comprises an adjusting bolt vertically arranged, a bolt through hole is formed in the lamination table, the adjusting bolt is mounted in the bolt through hole, and a pressing block used for supporting the clamping piece is mounted at the top of the adjusting bolt.
Preferably, the adjusting bolt is connected with the pressing block through a positioning pin, and the pressing block can freely move within a preset range.
The invention provides an assembly tool for assembling an isolation transformer core of a steel rail grinding wagon, which comprises a horizontally arranged lamination platform, a plurality of support columns, a plurality of end explorators, a plurality of side explorators, a plurality of positioning rods and a plurality of adjusters, wherein the support columns are arranged on the top surface of the lamination platform and are used for supporting a core column, the end explorators are used for positioning the end surface of the core column, the side explorators are used for positioning the side surface of the core column, the positioning rods are used for adjusting the height of the clips, the support columns are arranged in three rows in the middle and two sides of the lamination platform, two opposite end explorators are respectively arranged at two ends of two rows of support columns positioned at two sides of the lamination platform, one end of one row of support columns positioned in the middle of the lamination platform is provided with the end explorators, the other end of the support columns. The positioning of the end face and the side face of the core column is realized through the end explorator and the side explorator, the positioning of the iron yoke is realized through the positioning rod, the height of the clamping piece is adjusted through the adjuster, and in the assembling process, each lamination of the core column is tightly attached to the end explorator and the side explorator, so that the assembling precision is ensured, the working efficiency is improved, and the workload is reduced.
Drawings
Fig. 1 is a schematic front view of an embodiment of an assembly fixture provided in the present invention;
FIG. 2 is a schematic top view of one embodiment of an assembly fixture provided in the present disclosure;
FIG. 3 is a schematic side view of one embodiment of an assembly fixture provided in the present disclosure;
FIG. 4 is a schematic structural diagram of an adjuster in an embodiment of the assembly fixture according to the present invention;
FIG. 5 is a schematic side view of an embodiment of an assembly fixture according to the present invention;
fig. 6 is a schematic front view of an operating state of an embodiment of the assembly fixture provided in the present invention;
FIG. 7 is a schematic top view of a steel rail grinding wagon isolating transformer core;
fig. 8 is a schematic front view of a core column of an isolation transformer core of a rail grinding wagon.
Detailed Description
The core of the invention is to provide an assembly tool for assembling the iron core of the isolation transformer of the rail grinding wagon, and the assembly accuracy and the working efficiency are improved.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 8, fig. 1 is a schematic front view of an assembly fixture according to an embodiment of the present invention; FIG. 2 is a schematic top view of one embodiment of an assembly fixture provided in the present disclosure; FIG. 3 is a schematic side view of one embodiment of an assembly fixture provided in the present disclosure; FIG. 4 is a schematic structural diagram of an adjuster in an embodiment of the assembly fixture according to the present invention; FIG. 5 is a schematic side view of an embodiment of an assembly fixture according to the present invention; fig. 6 is a schematic front view of an operating state of an embodiment of the assembly fixture provided in the present invention; FIG. 7 is a schematic top view of a steel rail grinding wagon isolating transformer core; fig. 8 is a schematic front view of a core column of an isolation transformer core of a rail grinding wagon.
The steel rail grinding wagon isolation transformer iron core provided by the specific embodiment of the invention comprises a lower iron yoke 8 and an upper iron yoke 9 which are parallel to each other, three core columns 10 are arranged between the lower iron yoke and the upper iron yoke, and air gaps are arranged between the end surfaces of the core columns 10 and the upper iron yoke 9. The end face of the core column 10 is a plane, the side face of the core column 10 is a multi-stage stepped face, and the upper side and the lower side of the core column 10 are provided with clamping plates 11.
The assembly tool for assembling the isolation transformer core of the steel rail grinding wagon comprises a horizontally arranged lamination platform, a plurality of support columns 3, a plurality of end explorator 4, a plurality of side explorator 5, a plurality of positioning rods 6 and a plurality of adjusters 7, wherein the support columns 3 are arranged on the top surface of the lamination platform and are vertically arranged, the end explorator 4 is used for positioning the end surface of the core column 10, the side explorator 5 is used for positioning the side surface of the core column 10, the positioning rods 6 are used for positioning the iron yoke, and the adjusters 7 are used for adjusting the height of the clamping pieces 12.
In order to adapt to the three-core-column structure of the isolation transformer core, the support columns 3 are arranged in three rows in the middle and two sides of the lamination table, two ends of two rows of support columns 3 positioned on two sides of the lamination table are respectively provided with two opposite end explorator 4, one end of one row of support column 3 positioned in the middle of the lamination table is provided with an end explorator 4, the other end of the other row of support column is provided with a positioning rod 6, the side surface of each row of support column 3 is provided with a side explorator 5, and two opposite end explorators 7 are arranged between two opposite end explorators 4 positioned on two sides. Support column 3 divide into the three rows promptly, evenly distributed is on the lamination platform, and end profiling 4 also divide into the three rows simultaneously, corresponds the setting with three rows support column 3, lies in three lines simultaneously, lies in the line of both sides and respectively is provided with two relative end profiling 4, lies in the line at middle part and only is provided with an end profiling 4, but the other end of line is provided with location stick 6, lie in respectively being provided with two regulators 7 on the line of both sides, side profiling 5 also divide into the three rows, but with three rows support column 3 non-colinear, set up in the side of support column 3.
Specifically, the lamination platform can also be a flat plate structure, can also be a crisscross beam structure of violently indulging, including two crossbeams 1 that the level setting is just parallel to each other and three longerons 2 that the level setting is just parallel to each other, longeron 2 perpendicular to crossbeam 1, and three longerons 2 evenly install on two crossbeams 1. Wherein, the crossbeam 1 is the square steel pipe specifically, and the longeron 2 is the steel sheet specifically, also can adopt other materials.
All install evenly distributed's three support column 3 on every longeron 2, two side explorator 5 are all installed to the side of every longeron 2, and two side explorators 5 are close to two support columns 3 that are located longeron 2 both ends respectively. The two ends of the two longitudinal beams 2 positioned on the two sides are provided with end explorator 4, one end of the longitudinal beam 2 positioned at the middle part is provided with the end explorator 4, the end explorator 4 is positioned at the joint of the cross beam 1 and the longitudinal beam 2, and the positioning rod 6 is arranged on the cross beam 1 and positioned between the two adjacent longitudinal beams 2. The adjuster 7 is provided at both ends of the two longitudinal beams 2 on both sides and between the end fence 4 and the support column 3. The number, the position, the connection mode and the like of all the components can be adjusted according to the situation and are all within the protection scope of the invention.
In the assembling process, the upper clamping piece 12 and the lower clamping piece 12 are hung above the adjuster 7 according to the drawing requirements, and the adjuster 7 is used for adjusting the requirements of the surface of the clamping pieces 12 and the lamination working surface; according to the drawing size requirement, a side explorator 4 and an end explorator 5 are arranged on the laminating table and are fixed by fasteners; stacking according to the requirement of iron core lamination, positioning and adjusting the end surface of a core column 10 through an end profile modeling 4, stacking an upper iron yoke 9 through a positioning rod 6, and stacking the side surface of the core column 10 through a side profile modeling 5; after the stacking is finished, a special clamp is used for clamping, other accessories such as an iron yoke penetrating screw rod, a clamping piece, a tensioning screw rod and the like are installed, after the installation is finished, overturning is carried out by overturning equipment, and then the whole iron core is manufactured.
The positioning of the end face and the side face of the core column 10 is realized through the end explorator 4 and the side explorator 5, the positioning of the iron yoke is realized through the positioning rod 6, the height of the clamping piece 12 is adjusted through the adjuster 7, and in the assembling process, each lamination of the core column 10 is enabled to be attached to the end explorator 4 and the side explorator 5, so that the assembling precision is ensured, the working efficiency is improved, and the workload is reduced.
In the assembly fixture provided by the specific embodiment of the invention, the end explorator 4 is connected with the lamination table through the horizontally arranged end explorator mounting seat bolt, and the working surface of the end explorator 4 is a vertical plane. The side explorator 5 is connected with the lamination table through a horizontally arranged side explorator by a mounting seat bolt, and the working surface of the side explorator 5 is a multi-stage stepped surface. Meanwhile, a plurality of connecting holes can be formed in the longitudinal beam 2, so that the end explorator 4 and the side explorator 5 can be arranged at different positions to adapt to iron cores of different models. Other ways, such as position adjustment by connecting the slide ways, are also possible and are within the scope of the invention.
On the basis of the assembly fixture provided by each of the above embodiments, the adjuster 7 includes an adjusting bolt 71 vertically disposed, a bolt through hole is disposed on the lamination table, the adjusting bolt 71 is mounted in the bolt through hole, and a pressing block 72 for supporting the clamping member 12 is mounted at the top of the adjusting bolt 71. The adjusting bolt 71 and the pressing block 72 may be connected by a positioning pin 73, and the pressing block 72 may be freely movable within a preset range. The pressing block 72 can freely move within a certain angle range under the condition of no stress, when the pressing block is stressed, the pressing block 72 is pressed, the height is adjusted by rotating the adjusting bolt 71, and the height can be adjusted by adopting various modes such as hydraulic driving or pneumatic driving.
The assembly tool for assembling the iron core of the isolation transformer of the steel rail grinding wagon provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (6)
1. The assembly tool for assembling the isolation transformer core of the steel rail grinding wagon is characterized by comprising a horizontally arranged lamination platform, a plurality of support columns (3) which are arranged on the top surface of the lamination platform and used for supporting a core column (10), a plurality of end explorator (4) which is used for positioning the end surface of the core column (10), a plurality of side explorator (5) which is used for positioning the side surface of the core column (10), a plurality of positioning rods (6) which are used for positioning an iron yoke and a plurality of regulators (7) which are used for regulating the height of a clamping piece (12), wherein the plurality of support columns (3) are arranged in the middle and two sides of the lamination platform in three rows, two opposite end explorator (4) are respectively arranged at two ends of two rows of support columns (3) which are arranged at two sides of the lamination platform, the end explorator (4) is arranged at one end of one row of support columns (3) which are, the other end of the support column is provided with the positioning rod (6), the side surface of each row of the support columns (3) is provided with the side explorator (5), and two regulators (7) are arranged between two opposite end explorators (4) positioned at two sides of the lamination platform;
the lamination platform comprises two horizontal beams (1) which are parallel to each other and three horizontal longitudinal beams (2) which are parallel to each other, the longitudinal beams (2) are perpendicular to the horizontal beams (1), and the three longitudinal beams (2) are uniformly arranged on the two horizontal beams (1);
three support columns (3) are uniformly distributed on each longitudinal beam (2), two side explorator (5) are arranged on the side surface of each longitudinal beam (2), and the two side explorator (5) are respectively close to the two support columns (3) at the two ends of the longitudinal beam (2);
the two ends of the two longitudinal beams (2) positioned on the two sides are respectively provided with the end explorator (4), one end of the longitudinal beam (2) positioned in the middle is provided with the end explorator (4), the end explorator (4) is positioned at the joint of the cross beam (1) and the longitudinal beam (2), and the positioning rod (6) is arranged on the cross beam (1) and positioned between the two adjacent longitudinal beams (2);
the adjuster (7) is arranged at two ends of the two longitudinal beams (2) on two sides and is arranged between the end explorator (4) and the supporting column (3).
2. The assembly tooling of claim 1, wherein the end explorator (4) is connected with the lamination table through a horizontally arranged end leaning mounting seat bolt, and the working surface of the end explorator (4) is a vertical plane.
3. The assembly tooling of claim 1, wherein the side explorator (5) is connected with the lamination table through a horizontally arranged side explorator and a mounting seat bolt, and the working surface of the side explorator (5) is a multi-stage stepped surface.
4. The assembly tooling of claim 1, wherein the cross beam (1) is a square steel pipe, and the longitudinal beam (2) is a steel plate.
5. The assembly tool according to any one of claims 1 to 4, characterized in that the adjuster (7) comprises an adjusting bolt (71) which is vertically arranged, a bolt through hole is formed in the lamination table, the adjusting bolt (71) is mounted in the bolt through hole, and a pressing block (72) for supporting the clamping piece (12) is mounted at the top of the adjusting bolt (71).
6. The assembly tooling of claim 5, wherein the adjusting bolt (71) and the pressing block (72) are connected through a positioning pin (73), and the pressing block (72) can move freely within a preset range.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711387310.3A CN107863244B (en) | 2017-12-20 | 2017-12-20 | Assembly tool for assembling isolation transformer core of steel rail grinding wagon |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201711387310.3A CN107863244B (en) | 2017-12-20 | 2017-12-20 | Assembly tool for assembling isolation transformer core of steel rail grinding wagon |
Publications (2)
Publication Number | Publication Date |
---|---|
CN107863244A CN107863244A (en) | 2018-03-30 |
CN107863244B true CN107863244B (en) | 2019-12-31 |
Family
ID=61706538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201711387310.3A Active CN107863244B (en) | 2017-12-20 | 2017-12-20 | Assembly tool for assembling isolation transformer core of steel rail grinding wagon |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN107863244B (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101640107A (en) * | 2009-07-02 | 2010-02-03 | 无锡市普天铁心有限公司 | Full bias seam iron core stepping stacking method |
CN202110921U (en) * | 2011-04-20 | 2012-01-11 | 广州骏发电气有限公司 | Transformer core laminar positioning device |
CN202332571U (en) * | 2011-11-30 | 2012-07-11 | 上海通用电气广电有限公司 | Transformer iron core lamination positioning device |
CN202996574U (en) * | 2012-12-31 | 2013-06-12 | 南车株洲电机有限公司 | Transformer iron core column positioning device |
CN205959763U (en) * | 2016-08-12 | 2017-02-15 | 张力明 | Iron core is violently indulged and is fixed a position closed assembly frock |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56155523A (en) * | 1980-05-02 | 1981-12-01 | Toshiba Corp | Laminating device of iron core |
JPS57128913A (en) * | 1981-02-04 | 1982-08-10 | Hitachi Ltd | Positioning device for laminated plate |
JPS58215007A (en) * | 1982-06-09 | 1983-12-14 | Hitachi Ltd | Iron core for stationary induction electrical apparatus |
JPH0677068A (en) * | 1992-08-24 | 1994-03-18 | Toshiba Corp | Assembling device and method of transformer |
JPH10149936A (en) * | 1996-11-19 | 1998-06-02 | Toshiba Fa Syst Eng Kk | Transportation jig for core of transformer and its assembling method |
CN201820635U (en) * | 2010-10-12 | 2011-05-04 | 南车株洲电机有限公司 | Motor train transformer coil assembly tool device |
CN106024367A (en) * | 2016-06-22 | 2016-10-12 | 江苏神龙电气制造有限公司 | Laminating and rapid positioning apparatus for transformer silicon steel iron core central column piece |
CN106024368A (en) * | 2016-06-22 | 2016-10-12 | 江苏神龙电气制造有限公司 | Adjustable transformer iron core lamination platform |
-
2017
- 2017-12-20 CN CN201711387310.3A patent/CN107863244B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101640107A (en) * | 2009-07-02 | 2010-02-03 | 无锡市普天铁心有限公司 | Full bias seam iron core stepping stacking method |
CN202110921U (en) * | 2011-04-20 | 2012-01-11 | 广州骏发电气有限公司 | Transformer core laminar positioning device |
CN202332571U (en) * | 2011-11-30 | 2012-07-11 | 上海通用电气广电有限公司 | Transformer iron core lamination positioning device |
CN202996574U (en) * | 2012-12-31 | 2013-06-12 | 南车株洲电机有限公司 | Transformer iron core column positioning device |
CN205959763U (en) * | 2016-08-12 | 2017-02-15 | 张力明 | Iron core is violently indulged and is fixed a position closed assembly frock |
Also Published As
Publication number | Publication date |
---|---|
CN107863244A (en) | 2018-03-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20120118846A1 (en) | Assembling an auxiliary lifting unit on a mobile crane | |
KR101695796B1 (en) | The assembly line of the scooter | |
CN105643174A (en) | Adjustable pairing jig frame for self-made H-shaped steel | |
CN203270600U (en) | Fixed support for installing embedded bolts of high-precision equipment | |
CN105421792A (en) | Lifting construction process of modular steel structural components | |
JP2017529467A (en) | Scaffolding to support work platform for bridge | |
CN102825410A (en) | Horizontal-type fast assembling platform for H profile steel | |
CN107863244B (en) | Assembly tool for assembling isolation transformer core of steel rail grinding wagon | |
CN213730131U (en) | Welding tool for supporting leg box | |
CN202123124U (en) | Hydraulic calibration platform with four columns | |
CN102587680B (en) | Installing and blocking machine and method for installing nodal points of construction steel framework by using same | |
JP2016529424A (en) | scaffold | |
CN213381395U (en) | Adjustable steel structure assembling jig frame | |
CN107470820B (en) | Reverse assembly welding tool | |
CN102704696B (en) | Space locator for high, big and heavy steel upright column | |
KR101531329B1 (en) | Strechable steel forms | |
KR102213315B1 (en) | Maintenance carriage capable of controlling height | |
CN112029982B (en) | Iron core sheet annealing clamp | |
CN201645089U (en) | Assembly welding mould for battery box cover | |
CN203037413U (en) | Lateral hydraulic calibration adjustable support of vertical six-component force test bench | |
CN211647444U (en) | Steel structure assembling supporting jig frame capable of adjusting elevation | |
CN203751625U (en) | Wheel set assembling fixture | |
CN210413272U (en) | Precast concrete component production line mould platform welding frock | |
CN207057772U (en) | A kind of automatic tapping machine | |
CN107186409B (en) | Quick assembly welding device for supporting leg connecting seat |
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 |