CN117604839B - Rail construction operation vehicle for rail maintenance treatment - Google Patents
Rail construction operation vehicle for rail maintenance treatment Download PDFInfo
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- CN117604839B CN117604839B CN202410096177.XA CN202410096177A CN117604839B CN 117604839 B CN117604839 B CN 117604839B CN 202410096177 A CN202410096177 A CN 202410096177A CN 117604839 B CN117604839 B CN 117604839B
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- 238000010276 construction Methods 0.000 title claims abstract description 39
- 238000011418 maintenance treatment Methods 0.000 title description 23
- 238000012423 maintenance Methods 0.000 claims abstract description 46
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- 239000004744 fabric Substances 0.000 claims description 33
- 238000005086 pumping Methods 0.000 claims description 26
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- 238000001816 cooling Methods 0.000 claims description 11
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- 239000002699 waste material Substances 0.000 claims description 4
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- 229910000831 Steel Inorganic materials 0.000 abstract description 28
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Abstract
The application belongs to the technical field of maintenance of railway track lines, and particularly discloses a track construction operation vehicle for steel rail maintenance processing, which aims to solve the problems of more complicated picking process, high working strength and low maintenance efficiency of accessories of a fastener system. The invention comprises two cabs, a connecting pedal, a side plate, a bearing mechanical arm, a guide rail clamping and lifting assembly and a bolt tightening assembly; the bearing mechanical arm is a plurality of rod-shaped plate bodies; the bolt tightening assembly comprises a shifting bearing rod, a bearing positioning column and a clamping and binding assembly; the top of the shifting bearing rod is positioned on the bearing mechanical arm, the bearing positioning column is positioned at the bottom of the shifting bearing rod, and a positioning sleeve is arranged close to the bottom; the clamping and binding assembly is positioned on the side wall of the bearing positioning column and used for clamping and fixing the baffle; and a soft block is arranged at the position, close to the baffle plate, of the clamping and binding assembly, and the elastic strip is bound and fixed by swelling after paraffin is injected into the soft block. The invention can assist maintenance personnel to complete the maintenance and the repair of the steel rail with high efficiency and low labor intensity.
Description
Technical Field
The invention relates to the technical field of maintenance of railway track lines, in particular to a track construction operation vehicle for steel rail maintenance treatment.
Background
The railway bolt fastener system has the functions of fixing the steel rails on the sleeper 005, keeping track gauges and preventing the steel rails from moving longitudinally and transversely relative to the sleeper, so that the consistency of the distance between the two steel rails and the consistency of the height are ensured, and a foundation is provided for the high-speed running of the train on the steel rails.
As shown in fig. 12, a common bolt-fastening system consists essentially of a baffle 007, bolts, washers and spring strips 006 for securing the rail to the sleeper 005; because the train runs at high speed on the rail 002 for a long time and high frequency, great vibration and abrasion are generated on the rail and the bolt fastening system, and the parallelism and the height of the rail are changed, the bolt fastening system, particularly the bolts, of the railway need to be periodically detected, replaced and maintained. The maintenance and replacement method and process of the bolt-on system are as follows: the method comprises the steps of fastener disassembly, bolt oiling, manual material changing, fastener fastening and the like.
Along with the long-time application of railway track lines, the railway track line inspection and maintenance requirements are increasingly large, small fastening equipment stirring equipment is generally adopted for maintaining steel rails and fasteners at present, manual transportation is relied on, and the working intensity is high and the efficiency is low:
aiming at the problems, the Chinese invention patent with the patent number of CN112746533B discloses a railway track movement maintenance workshop which comprises a vehicle body, side walls, a bolt tightening device and a pulling device; the two ends of the vehicle body are provided with cabs, the cabs at the two ends are provided with bogies and travelling mechanisms, the cabs at the two ends can control the running of a maintenance workshop, the cabs at the two ends are connected with frame beams at the upper ends, the cabs at the two ends are arranged in a hollow mode, the installation space of a bolt tightening device and a pulling device and the operation space of a worker are provided, manual operation is facilitated, meanwhile, the bolt tightening device utilizes a first sliding module and a second sliding module on a side wall to realize the position movement along the length direction and the height direction of the vehicle body, and utilizes a first sliding groove arranged on a first bracket to realize the position movement along the width direction of the vehicle body, and the three directions are matched to move to the fastener of a steel rail to carry out bolt loosening or tightening operation; and the rail is pulled up by utilizing the pulling-up device at the end of the telescopic bracket, so that the position adjustment of the railway track and the replacement of the fastener are realized.
According to the scheme, bolts are required to be detached one by manually using the bolt tightening device when the bolt fastener is maintained, accessories such as the gasket and the elastic strip 006 are easy to scatter away, and after the steel rail is adjusted, the accessories such as the bolts, the gasket and the elastic strip 006 are picked up and reinstalled or put into a waste bin; the picking up process of accessories such as bolts, washers, elastic strips 006 is comparatively loaded down with trivial details, is missed easily and is picked up because of need bowing so that pick up process intensity of labour is great and then easily influences the whole maintenance efficiency of bolt fastener.
Therefore, there is a need for a track construction work vehicle for rail maintenance processing that can effectively reduce the labor intensity of maintenance personnel during the maintenance of railway bolts and can effectively reduce the missing amount of accessories (fittings) during the maintenance of bolt fasteners.
Disclosure of Invention
The rail construction operation vehicle for rail maintenance processing solves the technical problems that in the prior art, a railway track moving maintenance workshop is limited by a self structure in the use process, the picking process of a fastener system accessory is complicated, the omission is easy, the labor intensity of maintenance personnel is high due to the fact that the maintenance personnel need to bend over to pick up the fastener system accessory, and the rail maintenance processing efficiency is low; the technical effect that the track construction operation vehicle for the steel rail maintenance treatment can assist maintenance personnel to efficiently complete the maintenance and the repair of the steel rail with low labor intensity is achieved.
The embodiment of the application provides a track construction operation vehicle for steel rail maintenance processing, which comprises two cabs, a traveling system, a connecting pedal for connecting the two cabs together, side plates with two ends respectively fixed on opposite surfaces of the two cabs, a bearing mechanical arm, a guide rail clamping and lifting assembly and a bolt tightening assembly;
the bearing mechanical arm is formed by hinging a plurality of rod-shaped plate bodies, and the number of the bearing mechanical arms is 4;
the guide rail clamping and lifting assembly body is an electric telescopic rod which is longitudinally arranged, the bottom of the electric telescopic rod is provided with a clamping body, and the electric telescopic rod is positioned on the bearing mechanical arm;
the bolt tightening assembly comprises a shifting bearing rod, a bearing positioning column and a clamping and binding assembly;
the shifting bearing rod is an electric telescopic rod and is longitudinally arranged, and the top of the shifting bearing rod is positioned on the bearing mechanical arm;
the bearing positioning column is positioned at the bottom of the shifting bearing rod, and a positioning sleeve is arranged at a position close to the bottom;
the clamping and binding assembly is positioned on the side wall of the bearing positioning column and is of a clip structure and used for clamping and fixing the baffle plate; and a soft block is arranged at the position, close to the baffle plate, of the clamping and binding assembly, and the elastic strip is bound and fixed by swelling after paraffin is injected into the soft block.
Further, a column-shaped cavity is longitudinally arranged on the inner bottom of the bearing positioning column, and an opening of the column-shaped cavity is positioned at the bottom of the bearing positioning column and is entirely column-shaped;
a positioning telescopic rod, a rotating rod, a spline body and a driving motor are arranged in the cylindrical cavity;
the positioning telescopic rod is an electric telescopic rod and is longitudinally arranged, and the top of the positioning telescopic rod is fixed on the inner top of the cylindrical cavity; the rotating rod is a hard rod body, and the top of the rotating rod is positioned at the bottom of the positioning telescopic rod; the rotating rod is rotationally connected to the positioning telescopic rod and is coaxial with the positioning telescopic rod;
the spline body is of a spline shaft structure and is positioned on the rotating rod and used for driving the rotating rod to rotate;
the driving motor is positioned in the bearing positioning column, and drives the rotating rod to rotate through the gear matching with the spline body.
Preferably, the clamping and binding assembly comprises a transverse telescopic column, a longitudinal telescopic rod, a clamping transverse plate and a deformation positioning assembly;
the clamping device comprises a transverse telescopic column, a longitudinal telescopic rod, a clamping transverse plate and a deformation positioning assembly, wherein the two groups are symmetrically arranged and respectively positioned at two sides of the bearing positioning column to jointly form a clip-shaped structure for clamping the baffle plate;
the transverse telescopic column is an electric telescopic rod which is transversely arranged, and one end of the transverse telescopic column is fixed on the side wall of the bearing positioning column;
the top of the longitudinal telescopic rod is fixed at the end part of the transverse telescopic column far away from the bearing positioning column;
the clamping transverse plate is a transverse plate body and is fixed at the end part of the longitudinal telescopic rod, and the combination of the transverse telescopic column, the longitudinal telescopic rod and the clamping transverse plate is -shaped;
the end part of the clamping transverse plate, which is far away from the longitudinal telescopic rod, is provided with a rubber cushion;
when the transverse telescopic column is contracted, the clamping transverse plates are mutually close to clamp and fix the baffle plate;
the deformation positioning component is used for limiting the movement and falling of the elastic strip and the gasket through self deformation.
Preferably, the deformation positioning assembly comprises a containing block, a piston assembly, an elastic sealing piece, a heating assembly and a cooling assembly;
the accommodating block is a hard block body and is fixed at the top of the clamping transverse plate, and the distance between the accommodating block and the end part of the clamping transverse plate, which is far away from the longitudinal telescopic rod, is less than 4 cm;
the surface of the accommodating block, which is close to the positioning sleeve, is provided with a positioning groove, wherein the positioning groove is a rectangular groove or a cylindrical groove and is used for accommodating paraffin;
the piston assembly is positioned in the accommodating block, paraffin is arranged in the piston assembly, and when the piston moves towards the positioning groove, the paraffin in the piston assembly is extruded into the positioning groove;
when the piston moves towards the direction away from the positioning groove, part of paraffin is sucked into the piston assembly;
the elastic sealing piece is an elastic film made of rubber, and the edge of the elastic sealing piece is fixed on the edge of the positioning groove to seal the positioning groove;
when the paraffin amount in the positioning groove is increased, the elastic sealing piece is supported to expand.
Preferably, the bolt tightening assembly further comprises an isolating cloth assembly;
the isolating cloth component comprises a winding roller and isolating cloth; the rolling roller is a cylindrical roller which is transversely arranged and positioned at the top of the accommodating block, the rolling roller is rotatably connected to the accommodating block, a torsion spring is positioned at the connecting position of the rolling roller, and the rolling roller always has the trend of rolling the isolation cloth due to the existence of the torsion spring; the isolating cloth is made of elastic material and is integrally strip-shaped, one end of the isolating cloth is fixed on the winding roller, and the other end of the isolating cloth is positioned on the clamping transverse plate.
Further, the bearing mechanical arm comprises a bracket, a first rotating plate, a second rotating plate and a third rotating plate;
the bracket is a hard plate body and is fixed on the side plate to play a role in bearing and fixing;
the first rotating plate is a rod-shaped plate body, one end of the first rotating plate is rotatably connected to the bracket, and the axial direction of the rotating shaft is perpendicular to the ground;
the second rotating plate is a rod-shaped plate body, the length of the second rotating plate is shorter than that of the first rotating plate, one end of the second rotating plate is rotatably connected to the other end of the first rotating plate, and the axial direction of the rotating shaft is perpendicular to the ground;
the third rotating plate is a rod-shaped plate body, the length of the third rotating plate is shorter than that of the second rotating plate, one end of the third rotating plate is rotatably connected to the other end of the second rotating plate, and the axial direction of the rotating shaft is perpendicular to the ground.
Preferably, a through groove is formed in the clamping transverse plate;
a second transversely arranged rolling roller is arranged at a position between the top accommodating block of the clamping transverse plate and the longitudinal telescopic rod;
the second rolling roller is detachably fixed on the clamping transverse plate;
one end of the isolating cloth is wound and positioned on the winding roller, and the other end of the isolating cloth is wound and positioned on the second winding roller after penetrating through the through groove.
Preferably, the connecting pedal is fixedly provided with an accessory conveying assembly, the accessory conveying assembly is of a conveying belt structure, and through holes which are convenient for bolts to penetrate and block bodies or frame bodies for limiting the baffle plates are arranged on the conveying belt at equal intervals; when in use, the baffle, the spring strip, the gasket and the bolt are sequentially overlapped and placed; when the accessories on the rails need to be replaced, the detached accessories are thrown into a waste box, and then the accessories are clamped from the accessory conveying assembly and then are installed.
Preferably, the positioning groove is also provided with a second sheet body, the second sheet body is an elastic soft sheet made of rubber, and is always in a straightened state, and the edge of the second sheet body is fixed on the edge of the inner bottom of the positioning groove;
the space formed by the positioning groove and the second sheet body is a first space, and the space formed by the elastic sealing sheet, the positioning groove and the second sheet body is a second space;
the first space is communicated with the pumping assembly, and the second space is communicated with the piston assembly;
the cooling assembly comprises an elastic hose and a refrigerant pumping assembly; the elastic hose is a rubber hose and is fixed on the second sheet body and positioned in the second space, and the elastic hose is communicated with the refrigerant pumping assembly; the refrigerant pumping assembly is a pump body with a refrigerating assembly and is used for conveying cool air or cold water into the elastic hose.
Preferably, the inner wall of the positioning sleeve is provided with a plurality of electric clamping pins controlled by the control unit, the electric clamping pins are electric pins, and the bolts are extruded and then fixed when the electric clamping pins are extended;
the length of the cylindrical cavity is more than 15 cm than the sum of the length of the positioning telescopic rod and the length of the rotating rod in the contracted state; the side wall of the cylindrical cavity is provided with a plurality of treatment spray heads close to the bottom, and the treatment spray heads comprise air injection spray heads and oil injection spray heads which are respectively communicated with the air pumping assembly and the oil pumping assembly.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:
according to the invention, through optimizing and improving a railway track moving maintenance workshop in the prior art, a mechanical arm is utilized to drive a bolt tightening assembly and a guide rail clamping assembly to move, and a soft bag is utilized to squeeze other accessories of a fixed component system when tightening bolts; the technical problems that in the prior art, a railway track moving maintenance workshop is limited by the structure of the workshop in the use process, the picking process of a fastener system accessory is complicated, omission is easy, the labor intensity of maintenance personnel is high due to bending pickup, and the steel rail maintenance treatment efficiency is low are effectively solved; and further, the technical effect that the track construction operation vehicle for steel rail maintenance treatment can assist maintenance personnel to efficiently complete maintenance and repair of the steel rail with low labor intensity is achieved.
Drawings
FIG. 1 is a schematic view of the external appearance of a track construction work vehicle for rail maintenance treatment of the present invention;
FIG. 2 is a schematic view of the external appearance of the load-bearing robotic arm, rail clamp assembly and bolt tightening assembly of the track construction work vehicle for rail maintenance treatment of the present invention;
FIG. 3 is a schematic view of the construction of a bolt tightening assembly of the track construction work vehicle for rail maintenance treatment of the present invention;
FIG. 4 is a schematic view of the internal structure of a load-bearing locator post of the track construction work vehicle for rail maintenance treatment of the present invention;
FIG. 5 is a schematic illustration of the clamping tie down assembly and spacer assembly of the track construction work vehicle for rail maintenance of the present invention;
FIG. 6 is a schematic view of the rust removing bucket of the track construction work vehicle for rail maintenance treatment of the present invention;
FIG. 7 is a schematic diagram of the oil coating bucket of the track construction work vehicle for rail maintenance treatment of the present invention;
FIG. 8 is a schematic view of the positional relationship between a cylindrical cavity and a positioning telescopic rod, a rotating rod and a positioning sleeve of the track construction work vehicle for rail maintenance treatment of the invention;
FIG. 9 is a schematic illustration of the spacer assembly and clamping tie assembly of the track construction work vehicle for rail maintenance of the present invention;
FIG. 10 is a schematic view of the relationship between the elastic sealing plate and the second plate of the track construction vehicle for rail maintenance treatment according to the present invention;
FIG. 11 is a schematic view of the positional relationship of the components on the second sheet of the track construction work vehicle for rail maintenance treatment of the present invention;
fig. 12 is a schematic structural view of the rail.
In the figure:
cab 001, traveling system 002, connecting pedal 003, side plate 004, sleeper 005, spring strip 006, baffle 007,
The mechanical arm for bearing 100, the first rotating plate 110, the second rotating plate 120, the third rotating plate 130, the guide rail clamping assembly 200, the longitudinal bearing rod 210, the first clamping plate 220, the second clamping plate 230, the displacement bearing rod 310, the bearing positioning column 320, the cylindrical cavity 321, the positioning telescopic rod 322, the rotating rod 323, the spline body 324, the driving motor 325, the positioning sleeve 326, the electric clamping pin 327, the processing nozzle 328, the clamping constraint assembly 330, the transverse telescopic rod 331, the longitudinal telescopic rod 332, the clamping transverse plate 333, the accommodating block 334, the piston assembly 335, the positioning groove 336, the elastic sealing piece 337, the heating assembly 338, the cooling assembly 339, the spacer cloth assembly 340, the rolling roller 341, the spacer cloth 342, the second rolling roller 343, the penetrating groove 344, the second sheet 345, the cushion block 346, the elastic hose 347, the refrigerant pumping assembly 348, the derusting barrel 400, the oiling barrel 500, the accessory conveying assembly 600, the first space 710, the second space 720, and the control key 730.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings; the preferred embodiments of the present invention are illustrated in the drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein; rather, these embodiments are provided so that this disclosure will be thorough and complete.
It should be noted that the terms "vertical", "horizontal", "upper", "lower", "left", "right", and the like are used herein for illustrative purposes only and do not represent the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, an external structural schematic diagram of a track construction operation vehicle for rail maintenance treatment according to the present invention is shown; according to the railway track moving maintenance workshop, the mechanical arm is utilized to drive the bolt tightening assembly and the guide rail clamping assembly to move, and the soft bag is utilized to squeeze other accessories of the fixed component system when tightening the bolts; the technical effect that the track construction operation vehicle for the steel rail maintenance treatment can assist maintenance personnel to efficiently complete the maintenance and the repair of the steel rail with low labor intensity is achieved.
Example 1
As shown in fig. 1 to 5, the track construction work vehicle for rail maintenance treatment of the present application includes a cab 001, a traveling system 002, a connection pedal 003, a side plate 004, a carrying mechanical arm 100, a rail clamping assembly 200, a bolt tightening assembly, a power assembly, and a control unit.
The number of the cabs 001 is two, and the bottoms of the cabs are provided with traveling systems 002;
the traveling directions of the two cabs 001 are opposite, and the two cabs 001 are fixed together through a connecting pedal 003; the connecting pedal 003 is a hard flat plate, and two ends of the connecting pedal are fixed at positions, close to the bottoms, on the side walls of the two cabs 001; the connecting pedal 003 is used for facilitating the pedal and walking of an operator;
the side plates 004 are hard plate bodies, are rectangular, have the width direction perpendicular to the horizontal ground and are two in number; the two ends of the side plate 004 are respectively fixed on the opposite surfaces of the two cabs 001 near the edges, and play a role of bearing and fixing the bearing mechanical arm 100.
The bearing mechanical arm 100 is formed by hinging a plurality of rod-shaped plate bodies, the axial direction of a hinging shaft is vertical to the horizontal ground, and the bearing mechanical arm is used for bearing the guide rail clamping and lifting assembly 200 and the bolt tightening assembly, and can move at will in the horizontal direction within a certain range; the number of the carrying mechanical arms 100 is 4, and two carrying mechanical arms 100 are arranged on each side plate 004;
further, the carrying robot 100 includes a bracket, a first rotating plate 110, a second rotating plate 120, and a third rotating plate 130; the bracket is a hard plate body and is fixed on the side plate 004 to play a role in bearing and fixing; the first rotating plate 110 is a rod-shaped plate body, one end of the first rotating plate is rotatably connected to the bracket, and the axial direction of the rotating shaft is perpendicular to the ground; the second rotating plate 120 is a rod-shaped plate body, the length of the second rotating plate is shorter than that of the first rotating plate 110, one end of the second rotating plate is rotatably connected to the other end of the first rotating plate 110, and the axial direction of the rotating shaft is perpendicular to the ground; the third rotating plate 130 is a rod-shaped plate body, the length of which is shorter than that of the second rotating plate 120, one end of which is rotatably connected to the other end of the second rotating plate 120, and the axial direction of the rotating shaft is perpendicular to the ground.
The connecting pedal 003 or the side plate 004 is positioned with a pumping assembly which is a combination of an air pump, an air valve and an air pipe and operates under the control of the control unit; an oil pumping component is also positioned on the connecting pedal 003 or the side plate 004; the oil pumping assembly comprises an oil pump and an oil storage tank.
The guide rail clamping and lifting assembly 200 is used for clamping, lifting and moving steel rails, the number of the guide rail clamping and lifting assembly is two, the main body is an electric telescopic rod which is longitudinally arranged, and the bottom of the electric telescopic rod is provided with an electric or pneumatic clamp body;
further, the rail clamping assembly 200 includes a longitudinal carrier bar 210, a first clamping plate 220, a second clamping plate 230, and a rotation driving body; the longitudinal carrying rod 210 is an electric telescopic rod, and is longitudinally arranged, the top of the longitudinal carrying rod is positioned on two carrying mechanical arms 100, and the two carrying mechanical arms 100 are respectively positioned on two side plates 004; the longitudinal bearing rod 210 is rotatably connected to one end of the third rotating plate 130 away from the second rotating plate 120, and the axial direction of the rotating shaft is perpendicular to the horizontal ground; the first clamping plate 220 is an arc-shaped plate, and is longitudinally arranged, and the top is fixed at the bottom of the longitudinal bearing rod 210; the second clamping plate 230 is also an arc-shaped plate body, and the top of the second clamping plate is rotatably connected to the first clamping plate 220 and is matched with the first clamping plate 220 to clamp and fix the steel rail; the rotation driving body is used for driving the second clamping plate 230 to rotate, preferably an electric telescopic rod structure, and two ends of the rotation driving body are respectively hinged to the first clamping plate 220 and the second clamping plate 230.
The bolt tightening and loosening assembly is used for loosening and tightening bolts on a railway in a rotating manner, and the number of the bolt tightening and loosening assemblies is two, and comprises a shifting bearing rod 310, a bearing positioning column 320, a clamping and binding assembly 330 and an isolating cloth assembly 340;
the displacement carrying rod 310 is an electric telescopic rod, is longitudinally arranged, and has a top positioned on one of the other two carrying mechanical arms 100; the displacement bearing rod 310 is rotatably connected to one end of the third rotating plate 130 away from the second rotating plate 120, and the axial direction of the rotating shaft is perpendicular to the horizontal ground;
the bearing positioning column 320 is cylindrical, is longitudinally arranged, has a top fixed at the bottom of the displacement bearing rod 310, and is used for bearing, positioning and clamping the constraint component 330, and a positioning sleeve 326 which rotates under the control of the control unit is positioned at a position close to the bottom;
further, a longitudinally arranged cylindrical cavity 321 is arranged on the inner bottom of the bearing positioning column 320, and an opening of the cylindrical cavity 321 is positioned at the bottom of the bearing positioning column 320 and is cylindrical as a whole; a positioning telescopic rod 322, a rotating rod 323, a spline body 324 and a driving motor 325 are arranged in the cylindrical cavity 321; the positioning telescopic rod 322 is an electric telescopic rod, is longitudinally arranged and the top of the positioning telescopic rod is fixed on the inner top of the cylindrical cavity 321; the rotating rod 323 is a hard rod body, and the top of the rotating rod 323 is positioned at the bottom of the positioning telescopic rod 322; the rotating rod 323 is rotatably connected to the positioning telescopic rod 322 and is coaxial with the positioning telescopic rod; the spline body 324 is in a spline shaft structure and is positioned on the rotating rod 323 and used for driving the rotating rod 323 to rotate; the driving motor 325 is positioned inside the bearing positioning column 320, and drives the rotating rod 323 to rotate through the gear matching with the spline body 324.
The clamping and binding assembly 330 is used for fixing the baffle 007 in a clamping manner and limiting the movement of the elastic strip 006 and the gasket on the baffle 007 in a pressing manner after shaping the soft sheet; the clamping and binding assembly 330 comprises a transverse telescopic column 331, a longitudinal telescopic rod 332, a clamping transverse plate 333 and a deformation positioning assembly; the transverse telescopic column 331, the longitudinal telescopic rod 332, the clamping transverse plate 333 and the deformation positioning assembly are arranged in a group, and the two groups are symmetrically arranged and positioned at two sides of the bearing positioning column 320 respectively to form a clip-shaped structure for clamping the baffle 007 together;
the transverse telescopic column 331 is an electric telescopic rod transversely arranged, one end of the electric telescopic rod is fixed on the side wall of the bearing positioning column 320, and the electric telescopic rod stretches under the control of the control unit;
the longitudinal telescopic rod 332 is an electric or manual telescopic rod longitudinally arranged, and the top of the longitudinal telescopic rod is fixed at the end part of the transverse telescopic column 331 far away from the bearing positioning column 320; the clamping and fixing of the baffle 007 can be facilitated by adapting to steel rails with different specifications through extension and contraction;
the clamping transverse plate 333 is a transverse plate body and is fixed at the end part of the longitudinal telescopic rod 332, and the combination of the transverse telescopic column 331, the longitudinal telescopic rod 332 and the clamping transverse plate 333 is -shaped; the end part of the clamping transverse plate 333, which is far away from the longitudinal telescopic rod 332, is provided with a rubber cushion; when the transverse telescopic column 331 is contracted, the clamping transverse plates 333 are mutually close to clamp and fix the baffle 007;
the deformation positioning component is used for limiting the movement and the falling of the elastic strip 006 and the gasket through self deformation and comprises a containing block 334, a piston component 335, an elastic sealing piece 337, a heating component 338 and a cooling component 339;
the accommodating block 334 is a hard block, is fixed on the top of the clamping transverse plate 333 and has a distance of less than 4 cm from the end of the clamping transverse plate 333 away from the longitudinal telescopic rod 332;
a positioning groove 336 is formed in the surface, close to the positioning sleeve 326, of the accommodating block 334, and the positioning groove 336 is a rectangular groove or a cylindrical groove and is used for accommodating paraffin;
the piston assembly 335 is positioned inside the accommodating block 334, is internally provided with paraffin, is communicated with the positioning groove 336 and is communicated with the pumping assembly; the pumping assembly changes the air pressure inside the piston assembly 335 through inflation and deflation so as to control the movement of the piston, and when the piston moves towards the positioning groove 336, paraffin inside the piston assembly 335 is extruded into the positioning groove 336; when the piston moves away from the positioning groove 336, part of paraffin in the positioning groove 336 is sucked into the piston assembly 335;
the elastic sealing piece 337 is an elastic film made of rubber, the edge of the elastic sealing piece is fixed on the edge of the positioning groove 336, and the positioning groove 336 is sealed into a rectangular block space or a cylindrical space; when the paraffin amount in the positioning groove 336 increases, the elastic sealing piece 337 is expanded; before and after the elastic sealing piece 337 is enlarged, the whole deformation positioning assembly is a block body (part of the soft part is hard) formed by combining a hard block and a soft block, and when the elastic sealing piece 337 is enlarged, the soft part is increased;
the heating assembly 338 is positioned inside the piston assembly 335 and the positioning groove 336, is of an electric heating wire structure, and is heated under the control of the control unit so as to melt the paraffin in the piston assembly 335 and the positioning groove 336;
the cooling module 339 is used to facilitate solidification of the paraffin by cooling the paraffin to shape the elastomeric seal 337, preferably a semiconductor refrigeration sheet structure secured to the inner wall of the positioning slot 336.
The spacer assembly 340 is configured to reduce wear of the insulating clamping tie assembly 330 by direct contact of the insulating clamping tie assembly 330 with the elastic strip 006, thereby prolonging the service life thereof;
the spacer cloth assembly 340 includes a take-up roller 341 and a spacer cloth 342; the rolling roller 341 is a cylindrical roller transversely arranged and positioned at the top of the accommodating block 334, and is rotatably connected to the accommodating block 334, and a torsion spring is positioned at the connecting position, so that the rolling roller 341 always has a trend of rolling the isolation cloth 342 due to the existence of the torsion spring; the isolating cloth 342 is made of elastic material, is in a strip shape as a whole, one end of the isolating cloth 342 is fixed on the rolling roller 341, and the other end of the isolating cloth 342 is positioned on the clamping transverse plate 333;
further, the other end of the spacer 342 is fixed to the upper surface of the clamping diaphragm 333.
Preferably, as shown in fig. 9, in order to facilitate replacement of the spacer assembly 340, the clamping cross plate 333 is provided with a through slot 344 therein; a second winding roller 343 which is transversely arranged is arranged at a position between the top accommodating block 334 of the clamping transverse plate 333 and the longitudinal telescopic rod 332; the second winding roller 343 is detachably fixed to the clamping cross plate 333; one end of the isolating cloth 342 is wound and positioned on the rolling roller 341, and the other end of the isolating cloth 342 is wound and positioned on the second rolling roller 343 after penetrating through the through groove 344; after a certain time of use (after wear) of the spacer assembly 340, the second winding drum 343 and the winding drum 341 are removed, and one or more turns of the spacer 342 on the winding drum 341 are released. The separator 342 is wound around the second winding drum 343 one or more times, and finally the second winding drum 343 and the winding drum 341 are reloaded.
As shown in fig. 1, 6 and 7, the connecting pedal 003 is provided with a rust removing barrel 400 and an oiling barrel 500, which are barrel-shaped containers with a plurality of spray heads on the inner side walls, and are respectively used for removing rust and oiling the bolts; the spray head in the rust removing barrel 400 is communicated with the pumping assembly; the spray head in the oiling barrel 500 is communicated with an oil pumping assembly; the bolt tightening assembly drives the bolt to move into the rust removing barrel 400 and the oil coating barrel 500 for rust removing and oil coating.
The power component is used for providing power for the operation of each component of the track construction operation vehicle for the steel rail maintenance treatment, and the control unit plays a role in controlling the coordinated operation of each component of the track construction operation vehicle for the steel rail maintenance treatment, and is not described in detail herein.
Preferably, the control unit is a combination of a programmable logic controller and a control button 730; the control buttons 730 are positioned on the longitudinal carrier bar 210 of the rail clip assembly 200 and on the displacement carrier bar 310 of the bolt tightening assembly.
When the track construction operation vehicle for steel rail maintenance treatment is actually used, the track construction operation vehicle comprises the following components:
1. the track construction operation vehicle moves to a position to be maintained;
2. an operator holds the shift carrier bar 310 to move the positioning sleeve 326 directly above the bolt; the displacement bearing rod 310 is controlled to extend so that the positioning sleeve 326 covers the bolt to be disassembled;
3. controlling the retraction of the transverse telescopic column 331 so that the clamping cross plate 333 clamps the barrier 007; at this time, the piston assembly 335 is controlled to pump liquid paraffin into the positioning groove 336, so that the elastic sealing piece 337 is inflated to press the isolating cloth 342, and then the isolating cloth 342 is close to and clung to other accessories (except for the bolt) such as the spring strip 006, and at this time, the isolating cloth 342 is clung to other accessories (except for the bolt) such as the spring strip 006; thereafter, the cooling module 339 is controlled to accelerate the solidification of the paraffin and thereby stably fix the spring strip 006 and the gasket on the baffle 007 (if other accessories such as the air bag fixing spring strip 006 are used, not only pressure is continuously applied to the baffle 007 so that the baffle 007 is easy to loosen after being suspended, but also the fixing stability is relatively poor);
4. the positioning sleeve 326 is controlled to rotate and simultaneously the positioning telescopic rod 322 or the displacement bearing rod 310 is controlled to shrink so as to detach the bolt;
5. an operator holds the shifting carrier bar 310 by hand to drive the bolt to move so as to remove rust and oil, and the handheld guide rail clamping and lifting assembly 200 adjusts the steel rail or replaces the sleeper 005; finally re-fastening the bolt; after tightening, a portion of the paraffin within the control detent 336 melts and returns to the piston assembly 335.
Preferably, in order to facilitate the movement and use of the bolt tightening assembly, a positioning laser lamp is arranged at the bottom of the bearing positioning column 320, and the positioning laser lamp emits visible laser to irradiate the ground so as to facilitate an operator to determine whether the positioning sleeve 326 of the bolt tightening assembly moves right above the bolt.
Preferably, in order to facilitate the movement and use of the bolt tightening and loosening assembly, a camera is arranged at the bottom of the bearing positioning column 320, and a signal connected with the camera is fixed on the side plate 004, so that a user can observe the running state of the bolt tightening and loosening assembly.
Further, as shown in fig. 1, the attachment conveying assembly 600 is fixed on the connection pedal 003, the attachment conveying assembly 600 is in a conveying belt structure, and through holes for facilitating the penetration of bolts and blocks or frames for limiting the baffle 007 are arranged on the conveying belt at equal intervals; when in use, the baffle 007, the spring strip 006, the gasket and the bolts can be sequentially overlapped and placed; when it is desired to replace an accessory on a rail, the removed accessory (the barrier 007, spring strips 006, washers and bolts) can be discarded into the waste bin and then the accessory can be gripped from the accessory transport assembly 600 and then installed.
In order to accelerate the cooling efficiency of the paraffin and further improve the service efficiency of the bolt tightening assembly on the premise that the deformation positioning assembly can firmly tie other accessories such as the elastic strip 006, preferably, as shown in fig. 10 and 11, the positioning groove 336 is further positioned with a second sheet 345, the second sheet 345 is an elastic soft sheet made of rubber, and is always in a straightened state, and the edge is fixed on the edge of the inner bottom of the positioning groove 336; for convenience of description, a space formed by the positioning groove 336 and the second sheet 345 is defined as a first space 710, and a space formed by the elastic sealing piece 337, the positioning groove 336 and the second sheet 345 is defined as a second space 720; the second space 720 is densely covered with cushion blocks 346, and the cushion blocks 346 are hemispherical cushions made of rubber material and fixed on the elastic sealing piece 337 and the second sheet 345 for preventing the second sheet 345 from being tightly attached to the elastic sealing piece 337; the first space 710 communicates with the pumping assembly and the second space 720 communicates with the piston assembly 335; the heating assembly 338 is an electric heating wire with a heat insulation pad, and part of the electric heating wire is fixed on the second sheet 345 through the heat insulation pad and is used for melting paraffin in the second space 720 on the premise of not damaging the second sheet 345; the cooling assembly 339 includes a flexible hose 347 and a refrigerant pumping assembly 348; the elastic hose 347 is a rubber hose, fixed on the second sheet 345 and located in the second space 720, and the elastic hose 347 is communicated with the refrigerant pumping assembly 348; the refrigerant pumping assembly 348 is a pump body with a refrigeration assembly for delivering chilled air or water into the flexible hose 347. When the deformation positioning assembly is used, the piston assembly 335 is controlled to pump liquid paraffin into the second space 720, and after the isolating cloth 342 is extruded and attached to the contour of the elastic strip 006, the gas amount in the first space 710 is controlled to increase so as to further expand the cushion block 346 and enable part of the liquid paraffin to flow back to the piston assembly 335; at this time, the refrigeration assembly is controlled to operate so as to quickly solidify the paraffin in the second space 720; the heating assembly 338 is controlled to melt the paraffin in the second space 720 rapidly after the bolts are re-fastened.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
the technical problems that in the prior art, a railway track moving maintenance workshop is limited by the structure of the workshop in the use process, the picking process of a fastener system accessory is complicated, omission is easy, the labor intensity of maintenance personnel is high due to bending and picking, and the steel rail maintenance treatment efficiency is low are solved; the technical effect that the track construction operation vehicle for the steel rail maintenance treatment can assist maintenance personnel to efficiently complete the maintenance and the repair of the steel rail with low labor intensity is achieved.
Example two
In order to further improve the practicability of the bolt rust removing and oiling device, the rust removing and oiling of the bolt are more convenient; the embodiment of the present application further optimizes and improves the structure of the positioning sleeve 326 and the structure of the inner wall of the cylindrical cavity 321 based on the above embodiment, specifically:
as shown in fig. 8, the inner wall of the positioning sleeve 326 is provided with a plurality of electric clamping pins 327 controlled by the control unit, the electric clamping pins 327 are electric pins, and when the electric clamping pins are extended, the bolts are pressed to fix the bolts;
the length of the cylindrical cavity 321 is more than 15 cm greater than the sum of the length of the positioning telescopic rod 322 and the length of the rotating rod 323 in the contracted state; a plurality of treatment spray heads 328 are arranged on the side wall of the cylindrical cavity 321 near the bottom, and the treatment spray heads 328 comprise air injection spray heads and oil injection spray heads which are respectively communicated with the air pumping assembly and the oil pumping assembly; when the bolt is maintained, after the bolt tightening assembly is controlled to move and the positioning sleeve 326 is sleeved on the bolt to be maintained, the clamping transverse plate 333 is controlled to clamp the fixed baffle 007, and the elastic sealing piece 337 is controlled to expand and then press the abutting elastic strip 006 and the gasket; then the positioning sleeve 326 is controlled to rotate, the bolt is unscrewed, and the electric clamping pin 327 is used for clamping and fixing the bolt; controlling the positioning telescopic rod 322 to retract so that the bolt enters the cylindrical cavity 321; the processing spray nozzle 328 is controlled to spray air and oil, and the bolts are controlled to rotate simultaneously to remove rust and oil; and finally, re-tightening the bolt.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a track construction operation car for rail maintenance is handled, includes two cabs (001) and traveling system (002), its characterized in that: the device also comprises a connecting pedal (003) for connecting the two cabs (001), side plates (004) with two ends respectively fixed on opposite surfaces of the two cabs (001), a bearing mechanical arm (100), a guide rail clamping and lifting assembly (200) and a bolt tightening assembly;
the bearing mechanical arm (100) is formed by hinging a plurality of rod-shaped plate bodies, and the number of the bearing mechanical arm is 4;
the guide rail clamping and lifting assembly (200) is characterized in that a main body is an electric telescopic rod which is longitudinally arranged, a clamping body is arranged at the bottom of the electric telescopic rod, and the electric telescopic rod is positioned on the bearing mechanical arm (100);
the bolt tightening assembly comprises a shifting bearing rod (310), a bearing positioning column (320) and a clamping and binding assembly (330);
the displacement bearing rod (310) is an electric telescopic rod and is longitudinally arranged, and the top of the displacement bearing rod is positioned on the bearing mechanical arm (100);
the bearing positioning column (320) is positioned at the bottom of the shifting bearing rod (310), and a positioning sleeve (326) is arranged at a position close to the bottom;
the clamping and binding assembly (330) is positioned on the side wall of the bearing positioning column (320) and is of a clip structure and used for clamping and fixing the baffle plate (007); a soft block is arranged at the position of the clamping and binding assembly (330) close to the baffle plate (007), and the elastic strip (006) is bound and fixed by swelling after paraffin is injected into the soft block;
the clamping and binding assembly (330) comprises a transverse telescopic column (331), a longitudinal telescopic rod (332), a clamping transverse plate (333) and a deformation positioning assembly;
the two groups of the transverse telescopic column (331), the longitudinal telescopic rod (332), the clamping transverse plate (333) and the deformation positioning assembly are symmetrically arranged and positioned on two sides of the bearing positioning column (320) respectively to form a clip-shaped structure for clamping the baffle plate (007);
the deformation positioning assembly comprises a containing block (334), a piston assembly (335), an elastic sealing piece (337), a heating assembly (338) and a cooling assembly (339);
the accommodating block (334) is a hard block, is fixed on the top of the clamping transverse plate (333) and has a distance of less than 4 cm from the end of the clamping transverse plate (333) far away from the longitudinal telescopic rod (332);
a positioning groove (336) is formed in the surface, close to the positioning sleeve (326), of the accommodating block (334), and the positioning groove (336) is a rectangular groove or a cylindrical groove and is used for accommodating paraffin;
the piston assembly (335) is positioned in the accommodating block (334), paraffin is arranged in the piston assembly, and when the piston moves towards the positioning groove (336), the paraffin in the piston assembly (335) is extruded into the positioning groove (336);
when the piston moves towards the direction away from the positioning groove (336), part of paraffin in the positioning groove (336) is sucked into the piston assembly (335);
the elastic sealing piece (337) is an elastic film made of rubber, and the edge of the elastic sealing piece is fixed on the edge of the positioning groove (336) to seal the positioning groove (336);
when the paraffin content in the positioning groove (336) increases, the elastic sealing piece (337) is expanded.
2. A track construction work vehicle for a rail maintenance process as claimed in claim 1, wherein: the inner bottom of the bearing positioning column (320) is provided with a longitudinally arranged cylindrical cavity (321), an opening of the cylindrical cavity (321) is positioned at the bottom of the bearing positioning column (320), and the whole bearing positioning column is cylindrical;
a positioning telescopic rod (322), a rotating rod (323), a spline body (324) and a driving motor (325) are arranged in the cylindrical cavity (321);
the positioning telescopic rod (322) is an electric telescopic rod, is longitudinally arranged, and the top of the positioning telescopic rod is fixed on the inner top of the cylindrical cavity (321); the rotating rod (323) is a hard rod body, and the top of the rotating rod is positioned at the bottom of the positioning telescopic rod (322); the rotating rod (323) is rotatably connected to the positioning telescopic rod (322) and is coaxial with the positioning telescopic rod;
the spline body (324) is of a spline shaft structure and is positioned on the rotating rod (323) and used for driving the rotating rod (323) to rotate;
the driving motor (325) is positioned in the bearing positioning column (320), and drives the rotating rod (323) to rotate through the gear matching with the spline body (324).
3. A track construction work vehicle for a rail maintenance process as claimed in claim 1, wherein:
the transverse telescopic column (331) is an electric telescopic rod which is transversely arranged, and one end of the transverse telescopic column is fixed on the side wall of the bearing positioning column (320);
the top of the longitudinal telescopic rod (332) is fixed at the end part of the transverse telescopic column (331) far away from the bearing positioning column (320);
the clamping transverse plate (333) is a transverse plate body and is fixed at the end part of the longitudinal telescopic rod (332), and the combination of the transverse telescopic column (331), the longitudinal telescopic rod (332) and the clamping transverse plate (333) is -shaped;
the end part of the clamping transverse plate (333) far away from the longitudinal telescopic rod (332) is provided with a rubber cushion;
when the transverse telescopic column (331) is contracted, the clamping transverse plates (333) are mutually close to clamp and fix the baffle plate (007);
the deformation positioning component is used for limiting the movement and falling of the elastic strip (006) and the gasket through self deformation.
4. A track construction work vehicle for a rail maintenance process as claimed in claim 1, wherein: the bolt tightening assembly further includes an isolation cloth assembly (340);
the isolating cloth assembly (340) comprises a winding roller (341) and isolating cloth (342); the rolling roller (341) is a cylindrical roller which is transversely arranged and positioned at the top of the accommodating block (334), is rotationally connected to the accommodating block (334) and is positioned with a torsion spring at a connecting position, and the rolling roller (341) always has a trend of rolling the isolation cloth (342) due to the torsion spring; the isolating cloth (342) is made of elastic material, is in a strip shape as a whole, one end of the isolating cloth is fixed on the rolling roller (341), and the other end of the isolating cloth is positioned on the clamping transverse plate (333).
5. A track construction work vehicle for a rail maintenance process as claimed in claim 1, wherein: the bearing mechanical arm (100) comprises a bracket, a first rotating plate (110), a second rotating plate (120) and a third rotating plate (130);
the bracket is a hard plate body and is fixed on the side plate (004) to play a role in bearing and fixing;
the first rotating plate (110) is a rod-shaped plate body, one end of the first rotating plate is rotatably connected to the bracket, and the axial direction of the rotating shaft is perpendicular to the ground;
the second rotating plate (120) is a rod-shaped plate body, the length of the second rotating plate is shorter than that of the first rotating plate (110), one end of the second rotating plate is rotatably connected to the other end of the first rotating plate (110), and the axial direction of the rotating shaft is perpendicular to the ground;
the third rotating plate (130) is a rod-shaped plate body, the length of the third rotating plate is shorter than that of the second rotating plate (120), one end of the third rotating plate is rotatably connected to the other end of the second rotating plate (120), and the axial direction of the rotating shaft is perpendicular to the ground.
6. A track construction work vehicle for a rail maintenance process as claimed in claim 4, wherein: a through groove (344) is formed in the clamping transverse plate (333);
a second winding roller (343) which is transversely arranged is arranged at a position between the top accommodating block (334) of the clamping transverse plate (333) and the longitudinal telescopic rod (332);
the second rolling roller (343) is detachably fixed on the clamping transverse plate (333);
one end of the isolating cloth (342) is wound and positioned on the rolling roller (341), and the other end of the isolating cloth is wound and positioned on the second rolling roller (343) after penetrating through the through groove (344).
7. A track construction work vehicle for a rail maintenance process as claimed in claim 1, wherein: an accessory conveying assembly (600) is fixed on the connecting pedal (003), the accessory conveying assembly (600) is of a conveying belt structure, and through holes which are convenient for bolts to penetrate and blocks or frames used for limiting the baffle plates (007) are arranged on the conveying belt at equal intervals; when in use, the baffle (007), the spring strip (006), the gasket and the bolt are sequentially overlapped and placed; when an accessory on the rail needs to be replaced, the removed accessory is discarded into a waste bin, and then the accessory is clamped from the accessory handling assembly (600) and then installed.
8. A track construction work vehicle for a rail maintenance process as claimed in claim 1, wherein: the positioning groove (336) is also provided with a second sheet body (345), the second sheet body (345) is an elastic soft sheet made of rubber, and is always in a straightened state, and the edge of the second sheet body is fixed on the edge of the inner bottom of the positioning groove (336);
the space formed by the positioning groove (336) and the second sheet body (345) is a first space (710), and the space formed by the elastic sealing piece (337), the positioning groove (336) and the second sheet body (345) is a second space (720);
the first space (710) is communicated with the pumping assembly, and the second space (720) is communicated with the piston assembly (335);
the cooling assembly (339) comprises an elastic hose (347) and a refrigerant pumping assembly (348); the elastic hose (347) is a rubber hose, is fixed on the second sheet body (345) and is positioned in the second space (720), and the elastic hose (347) is communicated with the refrigerant pumping assembly (348); the refrigerant pumping assembly (348) is a pump body with a refrigeration assembly and is used for conveying cold air or cold water into the elastic hose (347).
9. A track construction work vehicle for a rail maintenance process as claimed in claim 2, wherein: the inner wall of the positioning sleeve (326) is provided with a plurality of electric clamping pins (327) controlled by the control unit, the electric clamping pins (327) are electric pins, and the bolts are extruded and then fixed when the electric clamping pins are extended;
the length of the cylindrical cavity (321) is more than 15 cm than the sum of the length of the positioning telescopic rod (322) and the length of the rotating rod (323) in the contracted state; and a plurality of treatment spray heads (328) are arranged on the side wall of the cylindrical cavity (321) close to the bottom, and the treatment spray heads (328) comprise air injection spray heads and oil injection spray heads which are respectively communicated with the air pumping assembly and the oil pumping assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410096177.XA CN117604839B (en) | 2024-01-24 | 2024-01-24 | Rail construction operation vehicle for rail maintenance treatment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410096177.XA CN117604839B (en) | 2024-01-24 | 2024-01-24 | Rail construction operation vehicle for rail maintenance treatment |
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| CN117604839A CN117604839A (en) | 2024-02-27 |
| CN117604839B true CN117604839B (en) | 2024-04-02 |
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| CN117604839A (en) | 2024-02-27 |
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