CN101590579A - A kind of clamping device of rail butt welding - Google Patents
A kind of clamping device of rail butt welding Download PDFInfo
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- CN101590579A CN101590579A CNA2009100587503A CN200910058750A CN101590579A CN 101590579 A CN101590579 A CN 101590579A CN A2009100587503 A CNA2009100587503 A CN A2009100587503A CN 200910058750 A CN200910058750 A CN 200910058750A CN 101590579 A CN101590579 A CN 101590579A
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- 238000003466 welding Methods 0.000 title claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 37
- 238000010276 construction Methods 0.000 claims abstract description 7
- 235000019994 cava Nutrition 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000002153 concerted effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
The invention discloses a kind of clamping device of rail butt welding.Comprise clamp (1), the clamp force application mechanism, turning cylinder (5) and clamping jaw (7), the upper end of described clamp (1) and clamp force application mechanism flexibly connect, it is characterized in that, the bottom of described clamp force application mechanism also comprises a clamp bearing (6), two turning cylinders (5) are installed in the both sides of clamp bearing (6) respectively according to the length direction that is parallel to rail, at least one pair of clamp (1) links together by turning cylinder (5) and clamp bearing (6), the lower end of clamp (1) is connected with clamping jaw (7), forming one is fulcrum with turning cylinder (5), the upper end of clamp (1) is the point of application, and the lower end of clamp (1) is the lever construction of stress point.The invention has the beneficial effects as follows: can under the situation of the height that does not increase machine, obtain bigger clamping force.
Description
Technical field
The invention belongs to the on-the-spot rail welding apparatus technology of seamless railroad, particularly a kind of clamping device of mobile steel rail butt welding machine.
Background technology
In the laying construction of gapless track, need carry out the scene welding to rail.The welding method that adopts mainly is flash welding and gas pressure welding at present.Portable flash welding trailer is mainly produced by American-European countries, and automaticity is higher, and the gas pressure welding trailer then is that handwork is main small machine entirely.In the rail flat welding process, no matter be to adopt flash welding and gas pressure welding, all need two ends clamping respectively, alignment, then heating, upset joint to be welded.Because the sectional area of rail is big, intensity is high, required upset force adds pretension and reaches more than 100 tons during welding.In order to make welding machine satisfy the requirement of field operation, equipment again can not be too heavy, too wide and too high.What existing portable flash welder adopted is the reasonable clamp type structure of expansion power effect, and what the moving pneumatic rail welding machine then adopted is the structure of hold-down support drift clamping mode.
The architectural feature of the mobile steel rail butt welding machine of existing employing clamp type structure as shown in Figure 1, be that symmetrical clamp 1 is installed on the center rotating shaft 5, the top of clamp 1 is connected with vertically arranged clamping cylinder 4 with clamping cylinder seat 3 by connecting rod 2, and the bottom has the clamping jaw 7 in order to the clamping rail that is integral structure with clamp 1.It is fulcrum that said structure has formed with turning cylinder 5, the upper end of clamp 1 is the point of application (application of force F1), the power structure is expanded for the lever of stress point (stressed F) in the lower end of clamp 1 (the clamping jaw 7 that promptly is integral structure with clamp 1), can be with the power of less clamping cylinder 4, obtain the rail clamping force of amplification, amplification multiple depends on the length ratio of clamp 1 top and bottom.
But because structural deficiency, there is following deficiency in the mobile steel rail butt welding machine of existing employing clamp type structure:
1. under the effect of top clamping cylinder 4, clamp 1 upper end is stressed, and clamp 1 will rotate around central shaft 5, thereby clamp rail 11.But because the size of turning cylinder 5 self and the restriction of clamp 1 required installation dimension and location of rail relation, the distance between central shaft 5 and the clamping jaw 7 is bigger, i.e. force arm a and be subjected to the ratio a/b of arm of force b little among the figure.If obtain bigger clamping force, or be the upper arm that adds long jaws 1, or be the active force that increases clamping cylinder 4, obviously, both all will increase the weight or the height of complete machine, and this all is a unfavorable factor concerning using mobile steel rail welding machine at the construction field (site).
2. according to the technological requirement of rail welding,, also should apply a power that vertically makes progress except applying the clamping force of level to rail.As can be seen from Figure 1, be applied to the make a concerted effort F and the vertical center line out of plumb of rail of the clamping force on the rail, that is to say, except the clamping component Fx of level, also have a vertical downward component Fy, the direction of this vertical force component is exactly opposite with the requirement of welding procedure, and require during rail welding to provide outside the horizontal clamping force, also to provide a power that makes progress, so such machine generally all adds a mechanism that rail is upwards promoted in addition.
3. the clamping jaw 7 of clamping rail 11 is to be fixed on clamp 1 bottom and to be integral structure with clamp 1, clamping rail is in order to obtain along the frictional force of rail length direction, so clamping jaw 7 must closely contact with rail, otherwise plastic deformation appears in clamping jaw 7 places easily, and then skids.When clamping rail 11, clamping jaw 7 is along with clamp 1 carries out circular motion around central shaft, because the distortion of machinery and the wearing and tearing of clamping jaw 7, clamping jaw 7 will be repaired after using a period of time with rail 11 contact-making surfaces.
Summary of the invention
In order to overcome the problems referred to above of prior art, the present invention proposes a kind of clamping device of rail butt welding, can effectively realize the clamping of rail butt welding.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of clamping device of rail butt welding, comprise clamp, the clamp force application mechanism, turning cylinder and clamping jaw, the upper end of described clamp and clamp force application mechanism flexibly connect, the bottom of described clamp force application mechanism also comprises a clamp bearing, two turning cylinders are installed in the both sides of clamp bearing respectively according to the length direction that is parallel to rail, at least one pair of clamp links together by turning cylinder and clamp bearing, the lower end of clamp is connected with the clamping jaw, forming one is fulcrum with the turning cylinder, the upper end of clamp is the point of application, and the lower end of clamp is the lever construction of stress point.
Above-mentioned clamp separates with the clamping jaw, has the coordination piece between the two, and described coordination piece can rotate relative to clamp.
The both sides of above-mentioned coordination piece are the cambered surface that caves inward, and clamp and clamping jaw have the outstanding cambered surface with described coordination piece coupling respectively, and the outstanding cambered surface of described clamp and clamping jaw can be rotated relative to the cambered surface that caves inward of coordinating piece.
Such scheme also comprises respectively the rollback drag link mechanism that is connected with clamp with the clamping jaw, the two ends of described rollback drag link mechanism respectively with clamping jaw and linkage of the hinged formation of clamp.
Above-mentioned rollback drag link mechanism comprises pull bar, be fixed on the pull bar front stall on the clamping jaw and be fixed on pull bar back seat on the clamp, and the two ends of described pull bar are hinged with pull bar front stall and pull bar back seat respectively.
Above-mentioned clamp force application mechanism comprises connecting rod, clamping cylinder bearing and clamping cylinder, and described clamping cylinder is vertically installed, and its two ends are connected with the clamp bearing with the clamping cylinder bearing respectively, and the upper end of described clamp flexibly connects by connecting rod and clamping cylinder bearing.
Above-mentioned clamping cylinder is installed vertically downward along the direction of piston rod, the lower end of described clamping cylinder is set with a clamping cylinder positioning tube that is fixedly mounted on the clamp bearing, the part cylinder body of clamping cylinder can slide in the clamping cylinder positioning tube, makes clamp keep the center line symmetry.
Another embodiment of above-mentioned clamp force application mechanism comprises transverse link, clamping cylinder transverse support and clamping cylinder, described clamping cylinder level is installed, its two ends are connected with the clamping cylinder transverse support respectively, and the upper end of described clamp flexibly connects by transverse link and clamping cylinder transverse support.
An embodiment again of above-mentioned clamp force application mechanism comprises clamping cylinder, and described clamping cylinder level is installed, and its two ends have free bearing respectively, and the upper end of described clamp free bearings direct and the clamping cylinder two ends flexibly connect.
The course of work of the present invention and principle are: before the welding, by the control system of rail butt welding machine control clamping cylinder turnover oil, make piston rod flexible, thereby the clamping jaw is closed up or open, realize the clamping of rail and unclamp.Because the clamping jaw can only slide by horizontal linear, so after rail clamped, the vertical symmetrical center line of rail was always parallel with the vertical center line of clamping device.
The invention has the beneficial effects as follows: (1) the present invention adopts clamp twin shaft rotational structure, thereby the center of rotation of clamp can be than clamp single axle rotation structure low, the relative existing single shaft clamp of distance between clamp center of rotation and the clamping jaw little can obtain the multiplication factor of bigger clamping force under the situation of the height that does not increase machine.(2) clamping force that is applied on the rail of clamp of the present invention is not vertical with the vertical center line of rail, but a clockwise corner is arranged, that is to say, except horizontal clamping force is provided, a vertical component that makes progress also is provided, this just meets the requirement of welding procedure, needn't establish the rail hoisting mechanism in addition, thereby can simplified structure.(3) with clamping jaw and clamp disjunction, the middle coordination piece of using is connected with the rollback connecting rod, the clamping jaw can not carry out circular motion with clamp, but make horizontal rectilinear motion along horizontal guide rail, thereby guaranteed that the clamping jaw contacts with the tight of rail, guaranteed the perpendicular positioning of rail simultaneously again, on the other hand, coordinate the abrasion that reduced the clamping jaw that relatively rotate of piece and clamp, alleviated the maintenance difficulty and the workload of jaw.
Description of drawings
Fig. 1 is the structure principle chart of the clamping device of existing rail butt welding machine.
Fig. 2 is the structure principle chart of the embodiment of the invention one.
Fig. 3 is the structure chart of the main apparent direction of the embodiment of the invention one.
Fig. 4 is the structure chart of the side-looking direction of the embodiment of the invention one.
Fig. 5 is the structure chart of overlooking direction of the embodiment of the invention one.
Fig. 6 is the assembly structure schematic diagram of clamping jaw, coordination piece and the clamp of the embodiment of the invention one.
Fig. 7 is the perspective view of the coordination piece of the embodiment of the invention one.
Fig. 8 is the structure principle chart of the rollback linkage of the embodiment of the invention one.
Fig. 9 is the structure chart of the main apparent direction of the embodiment of the invention two.
Figure 10 is the structure chart of overlooking direction of the embodiment of the invention two.
Figure 11 is the structure chart of the main apparent direction of the embodiment of the invention three.
Description of reference numerals: clamp 1, connecting rod 2, transverse link 21, clamping cylinder bearing 3, clamping cylinder transverse support 31,32, clamping cylinder 4, turning cylinder 5, clamp bearing 6, clamping jaw 7, contact block 71, coordination piece 8, cambered surface 81, cambered surface 82, clamping cylinder positioning tube 9, rollback drag link mechanism 10, pull bar 101, pull bar front stall 102, pull bar back seat 103, rail 11.
The specific embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments:
Embodiment 1: as Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, on the basis of existing technology, be clamp twin shaft rotational structure with the clamp single axle rotation architecture advances of prior art, thereby make the center of turning cylinder reduce, obtained the multiplication factor of higher clamping force; Simultaneously because center of rotation lays respectively at the both sides of rail, thereby clamp applies the clamping force of horizontal direction and lifting force vertically upward simultaneously to rail, so just needn't establish the rail hoisting mechanism in addition, thereby can simplified structure.Its concrete scheme is: a kind of clamping device of rail butt welding comprises two pairs of clamps 1, clamping jaw 7, a clamp force application mechanism, two turning cylinders 5; The clamp force application mechanism comprises connecting rod 2, clamping cylinder bearing 3 and clamping cylinder 4, clamping cylinder 4 is vertically installed, its two ends are connected with clamp bearing 6 with clamping cylinder bearing 3 respectively, the upper end of clamp 1 flexibly connects by connecting rod 2 and clamping cylinder bearing 3, also has a clamp bearing 6 in the lower end of clamping cylinder 4, the two ends of clamping cylinder 4 are connected with clamp bearing 6 with clamping cylinder bearing 3 respectively, two turning cylinders 5 are installed in the both sides of clamp bearing 6 respectively according to the length direction that is parallel to rail, clamp 1 is coupling together by turning cylinder 5 and clamp bearing 6, the lower end of clamp 1 is connected with clamping jaw 7, forming one is fulcrum with turning cylinder 5, the upper end of clamp 1 is the point of application, and the lower end of clamp 1 is the lever construction of stress point.
In order to have guaranteed of the tight abrasion that contact and guarantee perpendicular positioning and the reduction clamping jaw of rail of clamping jaw with rail, as shown in Figure 6 and Figure 7, above-mentioned clamp 1 separates with clamping jaw 7, has the piece 8 of coordination between the two, the both sides of coordinating piece 8 are the cambered surface 81 that caves inward, 82, clamp 1 and clamping jaw 7 have the outstanding cambered surface with described coordination piece 8 couplings respectively, the outstanding cambered surface of clamp 1 can be rotated relative to the cambered surface that caves inward 81 of coordinating piece 8, can eliminate clamp 1 when rotating with clamping jaw 7 between power and distortion inharmonious, make clamp 1 when rotating, impose on the excessive component minimizing vertically upward of clamping jaw 7.Above-mentioned clamping jaw 7 needs special processing to improve frictional force with the contact-making surface of rail 11, the wear resistance ratio of contact-making surface is bigger, for the ease of changing and maintenance, contact-making surface separated from jaw becomes contact block 71, can equivalence be the part of clamping jaw 7, so contact block 71 is not done independent narration.
Can break away from rail 11 together with clamp 1 in order to make clamping jaw 7 and to coordinate piece 8, also comprise respectively the rollback drag link mechanism 10 that is connected with clamp 1 with clamping jaw 7, rollback drag link mechanism 10 comprises pull bar 101, be fixed on the pull bar front stall 102 on the clamping jaw 7 and be fixed on pull bar back seat 103 on the clamp 1, and the two ends of described pull bar 101 are hinged with pull bar front stall 102 and pull bar back seat 103 respectively.After rail 11 welding finished, rollback drag link mechanism 10 retracted clamping jaw 7 along with clamp 1 opens, and reserved butt welding machine and broke away from the required space of rail.When the described clamping device of present embodiment and other devices are assembled into complete rail butt welding machine, the guide rail of a horizontal direction can be set for clamping jaw 7 on other devices, constraint clamping jaw 7 is done horizontal rectilinear motion along track c.
The connecting rod 2 of said apparatus applies a size to the upper end of clamp 1 under the effect of clamping cylinder 4 be F1, the arm of force is the moment of a, it is F that the lower end of clamp 1 then applies a size to coordination piece 8, the arm of force is the moment of b, power F can be decomposed into horizontal component Fx and component Fy vertically upward, horizontal component Fx can be by coordinating piece 8 and the clamping jaw 7 zero-decrement rail 11 that pass to, and this component is exactly the chucking power that we need; Because the outstanding cambered surface of clamp 1 can be rotated relative to the cambered surface that caves inward 81 of coordinating piece 8, then decay greatly of component Fy vertically upward, except that the necessary lifting force in order to the lifting rail of part, unnecessary power then attenuates, and has reduced the abrasion of clamping jaw.
For the mounting means that makes clamping cylinder conforms to loading characteristic, clamping cylinder 4 is vertically installed along the downward direction of piston rod.The advantage of this mounting means is to be fixedly mounted on clamping cylinder positioning tube 9 on the clamp bearing 6 one of the lower end of clamping cylinder 4 suit easily, the part cylinder body of clamping cylinder 4 can slide in clamping cylinder positioning tube 9, thereby make clamp 1 keep the center line symmetry, can deflection.
Embodiment 2: as shown in Figures 9 and 10, embodiment 2 is the different of clamp force application mechanism with the main distinction of embodiment 1, clamp force application mechanism in the present embodiment comprises transverse link 21, clamping cylinder transverse support 31,32 and clamping cylinder 4, described clamping cylinder 4 levels are installed, its two ends are connected with clamping cylinder transverse support 31,32 respectively, and the upper end of described clamp 1 flexibly connects by transverse link 21 and clamping cylinder transverse support 31,32.
Embodiment 3: as shown in figure 11, embodiment 3 also is the different of clamp force application mechanism with the main distinction of embodiment 1, clamp force application mechanism in the present embodiment comprises clamping cylinder 4, clamping cylinder 4 levels are installed, its two ends have free bearing respectively, and the upper end of clamp 1 free bearings direct and clamping cylinder 4 two ends flexibly connect.
For above-mentioned specific embodiment, various deformation can be arranged, coordinate piece 8 as cancelling, make clamping jaw 7 and clamp 1 be combined into integral body, the gripper clamp notch portion continues to continue to use prior art constructions.The quantity of clamp 1 can be reduced to a pair of as required or increase to how right.The clamp force application mechanism also can adopt other mechanism, enumerate no longer one by one, but these clamp force application mechanisms as long as combine with innovative point of the present invention, all can not break away from protection scope of the present invention no matter make which kind of distortion.
Those of ordinary skill in the art will appreciate that embodiment described here is in order to help reader understanding's principle of the present invention, should to be understood that protection scope of the present invention is not limited to such special statement and embodiment.Those of ordinary skill in the art can make various other various concrete distortion and combinations that do not break away from essence of the present invention according to these technology enlightenments disclosed by the invention, and these distortion and combination are still in protection scope of the present invention.
Claims (9)
1. the clamping device of a rail butt welding, comprise clamp (1), the clamp force application mechanism, turning cylinder (5) and clamping jaw (7), the upper end of described clamp (1) and clamp force application mechanism flexibly connect, it is characterized in that, the bottom of described clamp force application mechanism also comprises a clamp bearing (6), two turning cylinders (5) are installed in the both sides of clamp bearing (6) respectively according to the length direction that is parallel to rail, at least one pair of clamp (1) links together by turning cylinder (5) and clamp bearing (6), the lower end of clamp (1) is connected with clamping jaw (7), forming one is fulcrum with turning cylinder (5), the upper end of clamp (1) is the point of application, and the lower end of clamp (1) is the lever construction of stress point.
2. the clamping device of a kind of rail butt welding according to claim 1 is characterized in that, described clamp (1) separates with clamping jaw (7), has coordination piece (8) between the two, and described coordination piece (8) can rotate relative to clamp (1).
3. the clamping device of a kind of rail butt welding according to claim 2, it is characterized in that, the both sides of coordinating piece (8) are the cambered surface (81,82) that caves inward, clamp (1) and clamping jaw (7) have the outstanding cambered surface with described coordination piece (8) coupling respectively, and the outstanding cambered surface of described clamp (1) and clamping jaw (7) can be rotated relative to the cambered surface that caves inward (81) of coordinating piece (8).
4. the clamping device of a kind of rail butt welding according to claim 3, it is characterized in that, also comprise respectively the rollback drag link mechanism (10) that is connected with clamp (1) with clamping jaw (7), the two ends of described rollback drag link mechanism (10) respectively with clamping jaw (7) and linkage of the hinged formation of clamp (1).
5. the clamping device of a kind of rail butt welding according to claim 4, it is characterized in that, described rollback drag link mechanism (10) comprises pull bar (101), be fixed on the pull bar front stall (102) on the clamping jaw (7) and be fixed on pull bar back seat (103) on the clamp (1), and the two ends of described pull bar (101) are hinged with pull bar front stall (102) and pull bar back seat (103) respectively.
6. according to the clamping device of each described a kind of rail butt welding of claim 1 to 5, it is characterized in that, described clamp force application mechanism comprises connecting rod (2), clamping cylinder bearing (3) and clamping cylinder (4), described clamping cylinder (4) is vertical to be installed, its two ends are connected with clamp bearing (6) with clamping cylinder bearing (3) respectively, and the upper end of described clamp (1) flexibly connects by connecting rod (2) and clamping cylinder bearing (3).
7. the clamping device of a kind of rail butt welding according to claim 6, it is characterized in that, described clamping cylinder (4) is installed vertically downward along the direction of piston rod, the lower end of described clamping cylinder (4) is set with a clamping cylinder positioning tube (9) that is fixedly mounted on the clamp bearing (6), the part cylinder body of clamping cylinder (4) can slide in clamping cylinder positioning tube (9), makes clamp (1) keep the center line symmetry.
8. according to the clamping device of each described a kind of rail butt welding of claim 1 to 5, it is characterized in that, described clamp force application mechanism comprises transverse link (21), clamping cylinder transverse support (31,32) and clamping cylinder (4), described clamping cylinder (4) level is installed, its two ends are connected with clamping cylinder transverse support (31,32) respectively, and the upper end of described clamp (1) flexibly connects by transverse link (21) and clamping cylinder transverse support (31,32).
9. according to the clamping device of each described a kind of rail butt welding of claim 1 to 5, it is characterized in that, described clamp force application mechanism comprises clamping cylinder (4), described clamping cylinder (4) level is installed, its two ends have free bearing respectively, and the upper end of described clamp (1) free bearings direct and clamping cylinder (4) two ends flexibly connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100587503A CN101590579B (en) | 2009-03-31 | 2009-03-31 | Clamping device for rail butt welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100587503A CN101590579B (en) | 2009-03-31 | 2009-03-31 | Clamping device for rail butt welding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101590579A true CN101590579A (en) | 2009-12-02 |
| CN101590579B CN101590579B (en) | 2011-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100587503A Active CN101590579B (en) | 2009-03-31 | 2009-03-31 | Clamping device for rail butt welding |
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| CN (1) | CN101590579B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105926375A (en) * | 2016-06-27 | 2016-09-07 | 北京航天发射技术研究所 | Steel rail upper rail head transverse traction device |
| CN107671403A (en) * | 2017-10-20 | 2018-02-09 | 中国铁道科学研究院金属及化学研究所 | A kind of quick pressurize pushes away convex DC railway rail flash butt welding machine |
| CN107743579A (en) * | 2015-05-22 | 2018-02-27 | 申克罗泰克有限责任公司 | Equipment for the fixed balance weight on axle |
| CN108145022A (en) * | 2018-02-05 | 2018-06-12 | 芜湖安博帝特工业有限公司 | A kind of rotational positioning cover replacing device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3349216A (en) * | 1964-06-04 | 1967-10-24 | Inst Elektroswarki Patona | Machine for resistance butt-welding |
| AT5203U3 (en) * | 2002-01-28 | 2003-01-27 | Plasser Bahnbaumasch Franz | WELDING UNIT |
| CN201376169Y (en) * | 2009-03-31 | 2010-01-06 | 黄正中 | Clamp device for steel rail in butt welding |
-
2009
- 2009-03-31 CN CN2009100587503A patent/CN101590579B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107743579A (en) * | 2015-05-22 | 2018-02-27 | 申克罗泰克有限责任公司 | Equipment for the fixed balance weight on axle |
| CN107743579B (en) * | 2015-05-22 | 2020-01-03 | 申克罗泰克有限责任公司 | Device for fixing a balancing weight on a shaft |
| CN105926375A (en) * | 2016-06-27 | 2016-09-07 | 北京航天发射技术研究所 | Steel rail upper rail head transverse traction device |
| CN107671403A (en) * | 2017-10-20 | 2018-02-09 | 中国铁道科学研究院金属及化学研究所 | A kind of quick pressurize pushes away convex DC railway rail flash butt welding machine |
| CN108145022A (en) * | 2018-02-05 | 2018-06-12 | 芜湖安博帝特工业有限公司 | A kind of rotational positioning cover replacing device |
| CN108145022B (en) * | 2018-02-05 | 2019-05-24 | 芜湖安博帝特工业有限公司 | A kind of rotational positioning cover replacing device |
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| Publication number | Publication date |
|---|---|
| CN101590579B (en) | 2011-11-16 |
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Effective date of registration: 20160726 Address after: 610000, No. 1-3, No. 11, building 10, 18 north section of No. two ring road, Jinniu District, Sichuan, Chengdu Patentee after: Chengdu Ruiwei Traffic Technology Co.,Ltd. Address before: 610031, No. two, section 111, North Ring Road, Jinniu District, Sichuan, Chengdu, No. 19, No. 40, No. 2, unit 2 Patentee before: Huang Zhengzhong |