CN217733629U - There is device is dilateed to tiny fragments of stone, coal, etc. ballastless integral type - Google Patents
There is device is dilateed to tiny fragments of stone, coal, etc. ballastless integral type Download PDFInfo
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- CN217733629U CN217733629U CN202221109012.4U CN202221109012U CN217733629U CN 217733629 U CN217733629 U CN 217733629U CN 202221109012 U CN202221109012 U CN 202221109012U CN 217733629 U CN217733629 U CN 217733629U
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- crossbeam
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Abstract
The utility model provides a there is tiny fragments of stone, coal, etc. ballastless integral type to drag device, which comprises a beam, the crossbeam is equipped with four groups of horizontal sliding frames on the surface, the crossbeam both ends all are fixed with the connecting plate, under the effect through elevating system, the position of laying is carried with the rail clamping device to the convenience with the delivery wagon cooperation, under the effect through translation mechanism, change the interval of four horizontal sliding frames on the crossbeam, the interval that makes two horizontal rail clamping devices in the middle of the messenger is 1508mm, the gauge of track is laid for 2800mm standard to the interval of two horizontal rail clamping devices at both ends, for the single rail clamping device transport mode that has tiny fragments of stone, coal, etc. ballastless or tiny fragments of stone, it is more high-efficient, adopt the integral type design, the progress of construction has greatly been improved, and need not the manpower to pry the rail clamping device of different positions and shift, the rail is laid and is accomplished the back, first pneumatic cylinder makes the ground clearance of rail clamping device reduce, make things convenient for rail clamping device's the rail that falls, avoid the rail to fall from the high altitude.
Description
Technical Field
The utility model relates to a technical field is laid to the rail clamping device, specifically is a there is dilatory device of tiny fragments of stone, coal, etc. ballastless integral type.
Background
Along with the rapid development of railway transportation in China, a special passenger (goods) transportation line in the west enters a large-scale construction period, particularly, the southwest area is in a mountain valley, the specific gravity of a tunnel is high, most of lines are ballast tracks and ballastless tracks which are in the coexistence design, particularly, lines with the length of more than 1km of the tunnel are generally designed into ballastless lines, and in the process of laying the ballastless railway, a pair of 500-meter long steel rails are generally pushed out by a ballastless push vehicle for a short distance and then are butted to a tractor at the front section; and (3) pulling out the 500-meter long steel rail by using a ballastless tractor to complete the laying of the 500-meter long steel rail of the high-speed railway. In the process of laying and erecting the ballast railway, a pair of 500-meter-long steel rails are generally pushed out by a ballast CPG500 for a short distance and then are butted to a tractor at the front section; the paving of the 500-meter long steel rails of the high-speed railway is completed by pulling out the 500-meter long steel rails by the ballast tractor, the track gauge of a pair of steel rails pushed out by the ballastless pusher is 1508mm, and the track gauge of a pair of steel rails pushed out by the ballast CPG500 is 2800mm;
the railway track with the combination of the ballast track and the ballastless track needs to be pushed out by a longer distance, meanwhile, workers pry the railway track inwards or outwards by crowbars at different positions, and the steel rail head is butted with a tractor dragging device, so that the construction progress is seriously influenced, time and labor are wasted, and the safety is poor.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a there is not enough of tiny fragments of stone, coal, etc. ballastless integral type dilatory device to solve the problem that proposes in the above-mentioned background art, the utility model discloses novel structure drives the crossbeam through elevating system and is close to the rail clamping device, carries it through horizontal sliding frame afterwards, adjusts the position of four horizontal sliding frames in order to realize the construction of different rail clamping device intervals through translation mechanism.
In order to achieve the above purpose, the present invention is realized by the following technical solution: the utility model provides a there is tiny fragments of stone, coal, etc. ballastless integral type dragging device, includes the crossbeam, the crossbeam is equipped with four groups of horizontal sliding frame on the surface, the crossbeam both ends all are fixed with the connecting plate, and the crossbeam is close to the connecting plate install on the surface and drive the crossbeam and do the elevating system that vertical direction removed, horizontal bottom is equipped with the translation mechanism that drives horizontal sliding frame and remove.
Further, elevating system includes the mounting panel, the mounting panel sets up the top in the crossbeam outside, and the bottom that crossbeam one end was kept away from to the mounting panel is fixed with first vertical axis, the position that corresponds first vertical axis on the crossbeam top surface is fixed with the second vertical axis, and the second vertical axis is fixed between two horizontal sliding frames, the mounting panel other end rotates through the pivot and installs first pneumatic cylinder, rotate on the second vertical axis top inner wall and install first connecting piece, and the other end of first connecting piece rotates and installs on first vertical axis top inner wall, first connecting piece bottom is equipped with the second connecting piece, and the both ends of second connecting piece rotate respectively and install on first vertical axis and second vertical axis bottom inner wall, first pneumatic cylinder surface passes first connecting piece through the bearing rotation, and first pneumatic cylinder extension end rotates through the pivot and installs inside first connecting piece, first connecting piece and second connecting piece correspond first pneumatic cylinder rotation path and set up jaggedly.
Furthermore, two reinforcing plates are symmetrically fixed on the inner wall of the top of the connecting plate, the other sides of the reinforcing plates are fixed on the side edge of the second vertical shaft, and the transverse sliding frames at the two ends of the cross beam are arranged between the connecting plate and the second vertical shaft.
Furthermore, a rail clamping device is fixed at the bottom of the transverse sliding frame, and a guide sliding frame is fixed on one side of the transverse sliding frame, which is close to the lifting mechanism.
Furthermore, through holes are formed in two sides of the bottom of the rail clamping device, and limiting shafts are meshed and inserted into the through holes in the two sides of the bottom of the rail clamping device.
Further, translation mechanism includes the mount pad, mount pad fixed mounting is in the crossbeam middle-end, and mount pad bottom fixed mounting has two-way pneumatic cylinder, four the side of horizontal slip frame towards the crossbeam middle-end all is fixed with the otic placode, the both ends extension end of two-way pneumatic cylinder is fixed on the horizontal slip frame otic placode of correspondence, two horizontal slip frame opposite sides that the crossbeam is close to the middle-end are fixed with the second pneumatic cylinder, and the second pneumatic cylinder extension end is fixed on the otic placode of two horizontal slip frames of crossbeam outermost end.
Furthermore, the transverse sliding frames at the two ends of the cross beam are arranged in the middle of the gap between the connecting plate and the second vertical shaft.
Furthermore, the first hydraulic cylinder, the two-way hydraulic cylinder and the second hydraulic cylinder are all connected with a whole vehicle hydraulic system through hydraulic oil pipes
The utility model has the advantages that: the utility model relates to a ballast and ballastless integrated dragging device, which comprises a cross beam; a lifting mechanism; mounting a plate; a first vertical axis; a second vertical axis; a first hydraulic cylinder; a first connecting member; a second connecting member; a transverse sliding frame; a guide slide frame; a rail clamp; a limiting shaft; a connecting plate; a reinforcing plate; a translation mechanism; a mounting base; a bidirectional hydraulic cylinder; a second hydraulic cylinder; an ear plate.
1. This there is tiny fragments of stone, coal, etc. integral type dragging device of tiny fragments of stone, coal, etc. under elevating system's effect, drive second vertical axis and crossbeam together and do the ascending removal of vertical side, and the horizontal sliding frame of area neck is the motion of being close to or keeping away from the rail clamping device, and the position of laying is carried with the rail clamping device to the convenience and delivery wagon cooperation.
2. The distance between four transverse sliding frames on a beam is changed under the action of a translation mechanism, so that the distance between two middle transverse rail clamping devices is 1508mm, and the distance between two transverse rail clamping devices at two ends is 2800mm for laying a rail gauge.
3. This there is not tiny fragments of stone, coal, etc. integral type dragging device of tiny fragments of stone, coal, etc. passes through the clamp rail ware that the rail slides, installs the slide wedge fender at the both ends of clamp rail ware, fixes the rail, prevents to break away from the clamp rail ware, draws at 500 meters long rails and lays, and the gauge length after making the rail lay keeps at 1580mm or 2800's interval.
4. This there is tiny fragments of stone, coal, etc. ballastless integral type dragging device for single there is tiny fragments of stone, coal, etc. or ballastless rail traction laying mode, it is more high-efficient, adopt the integral type design, greatly improved the progress of construction to need not the manpower and prying the displacement to the clamp rail ware of different positions.
Drawings
Fig. 1 is a schematic view of the overall structure of a ballast and ballastless integrated dragging device of the present invention;
fig. 2 is a schematic structural view of a lifting mechanism of the ballast and ballastless integrated dragging device of the present invention;
fig. 3 is a schematic connection diagram of the transverse sliding frame and the rail clamping device of the ballast and ballastless integrated dragging device of the present invention;
fig. 4 is a schematic structural view of a translation mechanism of the ballast and ballastless integrated dragging device of the present invention;
fig. 5 is a schematic view of the connection between the translation mechanism and the transverse sliding frame of the ballast and ballastless integrated dragging device of the present invention;
in the figure: 1. a cross beam; 2. a lifting mechanism; 21. mounting a plate; 22. a first vertical axis; 23. a second vertical axis; 24. a first hydraulic cylinder; 25. a first connecting member; 26. a second connecting member; 3. a transverse sliding frame; 31. a guide sliding frame; 32. a rail clamp; 33. a limiting shaft; 4. a connecting plate; 41. a reinforcing plate; 5. a translation mechanism; 51. a mounting seat; 52. a bidirectional hydraulic cylinder; 53. a second hydraulic cylinder; 54. an ear plate.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
Referring to fig. 1 to 5, the present invention provides a technical solution: the utility model provides a there is not tiny fragments of stone, coal, etc. device of dragging of tiny fragments of stone, coal, etc. integral type, includes crossbeam 1, crossbeam 1 is equipped with four groups of horizontal sliding frame 3 on the surface, crossbeam 1 both ends all are fixed with connecting plate 4, and crossbeam 1 is close to connecting plate 4 installs on the surface and drives crossbeam 1 and be the elevating system 2 of vertical direction removal, horizontal bottom is equipped with the translation mechanism 5 that drives horizontal sliding frame 3 and remove, first pneumatic cylinder 24, two-way pneumatic cylinder 52 and second pneumatic cylinder 53 all are connected with whole car hydraulic system through hydraulic pressure oil pipe, and during the use device, the switch is opened, operates the corresponding valve of hydraulic system, and first pneumatic cylinder 24, two-way pneumatic cylinder 52 and second pneumatic cylinder 53 carry out work under the promotion of pressure oil, adjust four horizontal sliding frame 3's interval on crossbeam 1 through translation mechanism 5 earlier (the interval of two horizontal sliding frame 3 in the middle is 1508mm, and two horizontal sliding frame 3's interval at both ends is 2800 mm), after the regulation is accomplished, places the rail corresponds horizontal sliding frame 3 bottom, drives rail clamp 32 on crossbeam 1 through elevating system 2 drive, presses close to the rail clamp 32 removal, and the rail slides and press from the rail clamp 32, prevents to the tractor, and the rail removal device, and the tractor from the rail removal from the rail clamp from the rail removal, and the rail removal device, and the tractor, prevents to the rail clamp from the rail removal device, and the rail removal from the rail removal device, and the tractor, and the rail clamp from the rail removal.
In the embodiment, the lifting mechanism 2 comprises a mounting plate 21, the mounting plate 21 is arranged on the top of the outer side of the cross beam 1, and the bottom of the mounting plate 21 far away from one end of the beam 1 is fixed with a first vertical shaft 22, a second vertical shaft 23 is fixed on the top surface of the beam 1 corresponding to the first vertical shaft 22, and a second vertical shaft 23 is fixed between the two transverse sliding frames 3, a first hydraulic cylinder 24 is rotatably installed at the other end of the mounting plate 21 through a rotating shaft, a first connecting piece 25 is rotatably installed on the inner wall of the top end of the second vertical shaft 23, and the other end of the first connecting piece 25 is rotatably mounted on the inner wall of the top end of the first vertical shaft 22, the bottom of the first connecting piece 25 is provided with a second connecting piece 26, and both ends of the second connecting member 26 are rotatably mounted on the inner walls of the bottoms of the first vertical shaft 22 and the second vertical shaft 23, respectively, the surface of the first hydraulic cylinder 24 is rotatably passed through the first connecting member 25 through a bearing, and the extension end of the first hydraulic cylinder 24 is rotatably arranged in the first connecting piece 25 through a rotating shaft, the first connecting piece 25 and the second connecting piece 26 are provided with notches corresponding to the rotating path of the first hydraulic cylinder 24, the mounting plate 21 and the conveying vehicle are fixedly assembled, the first hydraulic cylinder 24 is opened, since the first connecting member 25 and the second connecting member 26 are limited at both ends by the first vertical shaft 22 and the second vertical shaft 23, the extended end of the first hydraulic cylinder 24 rotates the second connecting member 26, after the first connecting piece 25 is matched and rotated, (the top of the first hydraulic cylinder 24 is matched and rotated, and meanwhile, a gap is formed in the surface of the first connecting piece 25 to prevent the first connecting piece from colliding with the second hydraulic cylinder 53 after the first connecting piece 25 is rotated), the second vertical shaft 23 and the cross beam 1 are driven to move in the vertical direction together, and the rail clamping device 32 is driven to move close to or far away from the steel rail (clamping before the steel rail is laid and placing after the steel rail is laid are achieved).
In this embodiment, two reinforcing plates 41 are symmetrically fixed on the inner wall of the top of the connecting plate 4, the other side of each reinforcing plate 41 is fixed on the side of the second vertical shaft 23, the transverse sliding frames 3 at the two ends of the cross beam 1 are arranged between the connecting plate 4 and the second vertical shaft 23, the transverse sliding frames 3 at the two ends of the cross beam 1 are arranged in the middle of the gap between the connecting plate 4 and the second vertical shaft 23, the connecting plate 4 and the second vertical shaft 23 enhance the connectivity through the reinforcing plates 41, so as to enhance the stability of the lifting mechanism 2 when driving the cross beam 1 to move in the vertical direction, meanwhile, the transverse sliding frames 3 at the two ends of the cross beam 1 are arranged in the middle of the gap between the connecting plate 4 and the second vertical shaft 23, at this time, the second hydraulic cylinder 53 extends by half length, the rail gauge of the rail clamps 32 at the bottoms of the transverse sliding frames 3 at the two ends of the cross beam 1 is 2800mm, and then the positions of the two transverse sliding frames 3 can be adjusted through the second hydraulic cylinder 53, so as to change the rail gauges of the two outermost rail clamps 32 (the second hydraulic cylinder 53 adjusts the rail gauges of the two outermost rail clamps 32 in the range of 2400mm-3200 mm).
In this embodiment, a rail clamping device 32 is fixed at the bottom of the transverse sliding frame 3, a guiding sliding frame 31 is fixed at one side of the transverse sliding frame 3 close to the lifting mechanism 2, through holes are formed in two sides of the bottom of the rail clamping device 32, a limiting shaft 33 is inserted into the through holes in the two sides of the bottom of the rail clamping device 32 in an engaged mode, a steel rail penetrates through the rail clamping device 32, wedge stoppers are installed at two ends of the rail clamping device 32, the steel rail is fixed, and the rail is prevented from being separated from the rail clamping device 32.
This embodiment, translation mechanism 5 includes mount pad 51, mount pad 51 fixed mounting is in crossbeam 1 middle-end, and mount pad 51 bottom fixed mounting has two-way pneumatic cylinder 52, four horizontal sliding frame 3 all is fixed with otic placode 54 towards the side of crossbeam 1 middle-end, two-way pneumatic cylinder 52's both ends extension end is fixed on the horizontal sliding frame 3 otic placode 54 that corresponds, crossbeam 1 is close to two horizontal sliding frame 3 opposite sides of middle-end and is fixed with second pneumatic cylinder 53, and second pneumatic cylinder 53 extension end is fixed on the otic placode 54 of two horizontal sliding frame 3 of crossbeam 1 outermost end, adjusts the position that crossbeam 1 is close to two horizontal sliding frame 3 in middle section through two-way pneumatic cylinder 52, realizes adjusting about the unchangeable condition of two inboard rail gauge, adjusts the rail gauge of two outsides through second pneumatic cylinder 53, two-way pneumatic cylinder 52, second pneumatic cylinder 53 all is provided with the hydraulic lock, makes the pneumatic cylinder can fix in original position motionless when hydraulic system does not provide the pressure oil.
When the device is used, whether the corresponding construction is a ballast line or a ballastless line is determined:
if the railway is a railway with the fragments, the railway with the fragments is conveyed to a dragging device through a railway machine with the fragments, the distance difference of steel rails conveyed by the railway machine with the fragments is large, when the railway is used, rail clamping devices 32 at two ends of a bidirectional hydraulic cylinder 52 are pushed to symmetrical centering positions through a hydraulic system, the rail clamping devices 32 are fixed at the original positions through bidirectional hydraulic locks on the bidirectional hydraulic cylinder 52, second hydraulic cylinders 53 at the left side and the right side take the rail clamping device 32 in the middle as a base, the second hydraulic cylinders 53 at the left side and the right side extend out or retract into the second hydraulic cylinders 53 at the left side and the right side through the hydraulic system, the adjustment range of the rail clamping devices 32 at one side is 0-400 mm, the two rail clamping devices 32 at the outer side are adjusted within a large range of the distance within the range of 2400-3200 mm, and manual adjustment of the railway with the fragments to the rail distance is reduced; and the construction efficiency is improved.
If the track is a ballastless track, the ballastless track is conveyed to a dragging device through a ballastless track-laying machine, the distance between steel rails conveyed by the ballastless track-laying machine is generally more accurate at 1508mm, the track clamping device 32 and the steel rails are driven by the bidirectional hydraulic cylinder 52 to move in a fine-tuning mode from side to side, so that the steel rails can directly enter a track groove, construction efficiency is improved, when the track-laying machine is used specifically, the second hydraulic cylinder 53 extends out through the hydraulic system, the outer side track clamping device 32 is pushed out, the second hydraulic cylinder 53 is opened through the hydraulic system, a rod cavity and a rodless cavity of the oil cylinder of the second hydraulic cylinder 53 are communicated to form a follow-up oil cylinder, when the bidirectional hydraulic cylinder 52 moves from side to side through the hydraulic system, only the second hydraulic cylinder 53 extends out or retracts, but the outer side track clamping device 32 is not moved in place, and resistance of the bidirectional hydraulic cylinder 52 during movement is reduced.
When a steel rail is installed, the first hydraulic cylinder 24 extends out to drive the lifting mechanism 2 to drive the rail clamping device 32 on the cross beam 1 to descend to be close to the steel rail, so that the rail clamping device 32 can be conveniently sleeved on the steel rail; when the cabinet is loaded and the track is dragged, the first hydraulic cylinder 24 retracts to drive the lifting mechanism 2 to lift the beam 1 and the track clamping device 32, so that the track clamping device 32 is prevented from dragging the ground or touching a sleeper; the steel rail penetrates through the rail clamping device 32 in a sliding mode, wedge blocks are installed at two ends of the rail clamping device 32 to fix the steel rail and prevent the steel rail from being separated from the rail clamping device 32, the tractor at the front end runs to drive the dragging device to move, and the dragging device drags out of the steel rail to realize laying of the steel rail; after the steel rail is laid, the first hydraulic cylinder 24 extends out to drive the lifting mechanism 2 to drive the rail clamping device 32 on the beam 1 to descend, so that the ground clearance of the rail clamping device 32 is reduced, the rail clamping device 32 is convenient to fall, and the steel rail is prevented from falling from the high altitude.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a device is dilatory to ballastless no ballasted integral type, includes crossbeam (1), its characterized in that: crossbeam (1) is equipped with four groups of horizontal slip frames (3) on the surface, crossbeam (1) both ends all are fixed with connecting plate (4), and crossbeam (1) are close to connecting plate (4) install on the surface drive crossbeam (1) and are vertical direction moving elevating system (2), horizontal bottom is equipped with translation mechanism (5) that drives horizontal slip frame (3) and remove.
2. The ballast and ballastless integrated dragging device according to claim 1, characterized in that: elevating system (2) include mounting panel (21), mounting panel (21) set up the top in crossbeam (1) outside, and mounting panel (21) keep away from the bottom of crossbeam (1) one end and be fixed with first vertical axis (22), the position that corresponds first vertical axis (22) on crossbeam (1) top surface is fixed with second vertical axis (23), and second vertical axis (23) are fixed between two horizontal sliding frame (3), mounting panel (21) other end rotates through the pivot and installs first pneumatic cylinder (24), rotate on second vertical axis (23) top inner wall and install first connecting piece (25), and the other end of first connecting piece (25) rotates and installs on first vertical axis (22) top inner wall, first connecting piece (25) bottom is equipped with second connecting piece (26), and the both ends of second connecting piece (26) rotate respectively and install on first vertical axis (22) and second vertical axis (23) bottom inner wall, first pneumatic cylinder (24) surface rotates through the bearing and passes first connecting piece (25), and install through first connecting piece (24) rotation hydraulic cylinder (24) and the pivot (24) rotation route and first connecting piece (26) rotation and first connecting piece (24) have a breach to be seted up.
3. The ballast and ballastless integrated dragging device according to claim 2, characterized in that: two reinforcing plates (41) are symmetrically fixed on the inner wall of the top of the connecting plate (4), the other sides of the reinforcing plates (41) are fixed on the side edge of the second vertical shaft (23), and the transverse sliding frames (3) at the two ends of the cross beam (1) are arranged between the connecting plate (4) and the second vertical shaft (23).
4. The ballast and ballastless integrated dragging device according to claim 1, characterized in that: the bottom of the transverse sliding frame (3) is fixed with a rail clamping device (32), and one side of the transverse sliding frame (3) close to the lifting mechanism (2) is fixed with a guide sliding frame (31).
5. The ballastless integrated dragging device according to claim 4, characterized in that: through holes are formed in two sides of the bottom of the rail clamping device (32), and limiting shafts (33) are meshed and inserted into the through holes in the two sides of the bottom of the rail clamping device (32).
6. The ballast ballastless integrated dragging device according to claim 2, characterized in that: translation mechanism (5) are including mount pad (51), mount pad (51) fixed mounting is in crossbeam (1) middle-end, and mount pad (51) bottom fixed mounting has two-way pneumatic cylinder (52), four horizontal sliding frame (3) all are fixed with otic placode (54) towards the side of crossbeam (1) middle-end, the both ends extension end of two-way pneumatic cylinder (52) is fixed on horizontal sliding frame (3) otic placode (54) that correspond, two horizontal sliding frame (3) opposite sides that crossbeam (1) is close to the middle-end are fixed with second pneumatic cylinder (53), and second pneumatic cylinder (53) extension end is fixed on otic placode (54) of two horizontal sliding frame (3) of crossbeam (1) outermost end.
7. The ballast ballastless integrated dragging device according to claim 3, characterized in that: and the transverse sliding frames (3) at the two ends of the cross beam (1) are arranged in the middle of the gap between the connecting plate (4) and the second vertical shaft (23).
8. The ballast ballastless integrated dragging device according to claim 6, characterized in that: and the first hydraulic cylinder (24), the bidirectional hydraulic cylinder (52) and the second hydraulic cylinder (53) are all connected with a whole vehicle hydraulic system through hydraulic oil pipes.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202221109012.4U CN217733629U (en) | 2022-05-10 | 2022-05-10 | There is device is dilateed to tiny fragments of stone, coal, etc. ballastless integral type |
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Application Number | Priority Date | Filing Date | Title |
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CN202221109012.4U CN217733629U (en) | 2022-05-10 | 2022-05-10 | There is device is dilateed to tiny fragments of stone, coal, etc. ballastless integral type |
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CN217733629U true CN217733629U (en) | 2022-11-04 |
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CN202221109012.4U Active CN217733629U (en) | 2022-05-10 | 2022-05-10 | There is device is dilateed to tiny fragments of stone, coal, etc. ballastless integral type |
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