CN111851178B - Assembly method and assembly tool for grinding unit of grinding vehicle - Google Patents
Assembly method and assembly tool for grinding unit of grinding vehicle Download PDFInfo
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- CN111851178B CN111851178B CN202010870779.8A CN202010870779A CN111851178B CN 111851178 B CN111851178 B CN 111851178B CN 202010870779 A CN202010870779 A CN 202010870779A CN 111851178 B CN111851178 B CN 111851178B
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- grinding
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- grinding unit
- motor
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
- E01B31/02—Working rail or other metal track components on the spot
- E01B31/12—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
- E01B31/17—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by grinding
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- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
Abstract
本发明公开一种打磨车打磨单元的组装方法及组装工装，组装方法首先利用第一组装工装将打磨单元的导套和安装打磨砂轮用的连接盘组装到打磨电机上；然后利用第二组装工装固定打磨单元的打磨单元支架，然后在打磨单元支架上组装打磨单元的导柱，将组装好的打磨电机通过导套组装到导柱上，接着在导柱上预安装油缸支架，在油缸支架上安装升降油缸，并使升降油缸的驱动端与打磨电机固定连接；最后调整导柱以将导柱与导套的同轴度控制在公差范围内，然后固定油缸支架与导柱，从而完成打磨单元的组装。本发明在第二组装工装上即可进行压差试验，这样可以不受空间的限制，根据压差情况，随时对影响压差的导柱进行调整，方便对打磨车的打磨单元进行调整。
The present invention discloses an assembly method and assembly tooling for a grinding unit of a grinding vehicle. The assembly method first uses a first assembly tooling to assemble a guide sleeve of the grinding unit and a connecting plate for installing a grinding wheel onto a grinding motor; then uses a second assembly tooling to fix a grinding unit bracket of the grinding unit, then assembles a guide post of the grinding unit on the grinding unit bracket, assembles the assembled grinding motor onto the guide post through the guide sleeve, then pre-installs a cylinder bracket on the guide post, installs a lifting cylinder on the cylinder bracket, and fixes the driving end of the lifting cylinder with the grinding motor; finally, adjusts the guide post to control the coaxiality of the guide post and the guide sleeve within a tolerance range, then fixes the cylinder bracket and the guide post, thereby completing the assembly of the grinding unit. The present invention can perform a pressure difference test on the second assembly tooling, so that it is not limited by space, and the guide post affecting the pressure difference can be adjusted at any time according to the pressure difference situation, so that the grinding unit of the grinding vehicle can be adjusted conveniently.
Description
Technical Field
The invention relates to the technical field of steel rail polishing, in particular to an assembly method of a polishing unit of a polishing vehicle.
Background
The steel rail is a carrier of track traffic line running equipment, at present, urban traffic lines in China are busy, and the steel rail bears alternating acting force between wheel and rail generated by running of rail vehicles for a long time, so that the steel rail is damaged, the steel rail is extremely easy to break and the running accident of the vehicles is extremely easy to cause, and the normal running of the track traffic is seriously threatened. In order to avoid the influence of rail damage on driving safety, the problem of preventing rail crack, expansion, abrasion and the like by polishing the rail is a main mode for maintaining and maintaining the rail in the later stage.
At present, a polishing unit of a polishing trolley is often used for polishing a steel rail, and the polishing unit needs to be assembled and then mounted on a vehicle body of the polishing trolley. In order to meet the polishing quality of the steel rail, the polishing trolley has strict requirements on the pressure difference of the polishing unit, and in the prior art, the pressure difference test is carried out after the polishing unit is assembled to the polishing trolley, so that the polishing trolley is more easily limited by space, and the assembly components of the polishing unit are inconvenient to adjust.
Disclosure of Invention
Therefore, the invention aims to disclose an assembling method of a polishing unit of a polishing machine, so as to facilitate adjustment of the polishing unit of the polishing machine.
The invention further aims to disclose an assembly fixture for the polishing unit of the polishing trolley, so that the polishing unit of the polishing trolley can be conveniently adjusted.
In order to achieve the above purpose, the invention discloses the following technical scheme:
The assembling method of the polishing unit of the polishing vehicle comprises the following steps:
1) Assembling the guide sleeve of the polishing unit and the connecting disc for installing the polishing grinding wheel onto the polishing motor by using a first assembling tool;
2) Fixing a polishing unit bracket of the polishing unit by using a second assembly tool, then assembling a guide post of the polishing unit on the polishing unit bracket, assembling the polishing motor assembled in the step 1) on the guide post through the guide sleeve, then pre-installing an oil cylinder bracket on the guide post, installing a lifting oil cylinder on the oil cylinder bracket, and fixedly connecting the driving end of the lifting oil cylinder with the polishing motor;
3) And adjusting the guide post to control the coaxiality of the guide post and the guide sleeve within a tolerance range, and then fixing the oil cylinder bracket and the guide post.
Preferably, in the above assembly method, the two guide posts include at least one eccentric guide post, and the cylinder bracket overlaps the top ends of the two guide posts;
and 3) adjusting the coaxiality of the guide post and the guide sleeve by adjusting one of the eccentric guide posts.
According to the technical scheme, the assembling method of the polishing unit of the polishing machine comprises the steps of firstly assembling a guide sleeve of the polishing unit and a connecting disc for installing a polishing grinding wheel on a polishing motor by using a first assembling tool, then fixing a polishing unit support of the polishing unit by using a second assembling tool, then assembling a guide pillar of the polishing unit on the polishing unit support, assembling the assembled polishing motor on the guide pillar through the guide sleeve, then pre-installing an oil cylinder support on the guide pillar, installing a lifting oil cylinder on the oil cylinder support, enabling a driving end of the lifting oil cylinder to be fixedly connected with the polishing motor, and finally adjusting the guide pillar to control coaxiality of the guide pillar and the guide sleeve within a tolerance range, and then fixing the oil cylinder support and the guide pillar, thereby completing the assembling of the polishing unit.
In summary, the differential pressure test can be performed on the second assembly tool, so that the differential pressure test can be performed without being limited by space, and the guide post influencing the differential pressure can be adjusted at any time according to the differential pressure condition, so that the polishing unit of the polishing vehicle can be adjusted conveniently.
In addition, the invention only needs two assembly stations, and completes the adjustment of the parallelism of the guide posts in the assembly process, thereby improving the assembly efficiency and reducing the tooling cost.
The invention further discloses an assembling tool of the polishing unit of the polishing machine, which comprises a first assembling tool, a second assembling tool and a second assembling tool, wherein the first assembling tool is used for assembling a guide sleeve of the polishing unit and a connecting disc for installing a polishing grinding wheel on a polishing motor, the second assembling tool is used for fixing a polishing unit support of the polishing unit, then assembling a guide pillar of the polishing unit on the polishing unit support, assembling the assembled polishing motor on the guide pillar through the guide sleeve, then pre-installing an oil cylinder support on the guide pillar, installing a lifting oil cylinder on the oil cylinder support, and enabling a driving end of the lifting oil cylinder to be fixedly connected with the polishing motor, and the second assembling tool is used for adjusting the guide pillar so as to control coaxiality of the guide pillar and the guide sleeve within a tolerance range, and then fixing the oil cylinder support and the guide pillar.
Preferably, in the above assembly fixture, the first assembly fixture includes:
a first assembly bracket;
the motor fixing seat is arranged on the first assembly bracket;
The pressing piece of the polishing motor can be matched with the motor fixing seat to clamp.
Preferably, in the assembly fixture, the motor fixing seat is provided with an arc-shaped positioning groove in positioning fit with the outer peripheral surface of the polishing motor, and the pressing piece is provided with an arc-shaped pressing groove in positioning fit with the outer peripheral surface of the polishing motor.
Preferably, in the above assembly fixture, the pressing member includes:
a pressing plate having the arc-shaped pressing groove;
the stud is used for fixing the pressing plate on the motor fixing seat, and the stud is matched with the adjusting nut to realize that the fixing height of the pressing plate is adjustable.
Preferably, in the above assembly fixture, the motor fixing seat is provided with a plurality of groups of fixing holes for mounting the studs, and the fixing holes are arranged along the length direction of the arc-shaped positioning groove.
Preferably, in the above assembly fixture, the second assembly fixture includes:
A second assembly bracket;
The polishing unit seat of the polishing unit bracket is fixed through a fixing piece, and the polishing unit seat is arranged on the second assembly bracket.
Preferably, in the above assembly fixture, the polishing unit seat includes:
a bottom positioning frame for positioning the bottom mounting feet of the polishing unit bracket;
The four positioning upright posts are arranged on the bottom positioning frame and are used for limiting the periphery of the polishing unit bracket.
Preferably, in the above assembly fixture, the fixing member includes:
the positioning bolt can be propped against the top surface of the polishing unit bracket, and axially and adjustably penetrates through the top end of the positioning upright post along the horizontal direction through the locking nut.
According to the technical scheme, the assembling tool for the polishing unit of the polishing machine comprises a guide sleeve of the polishing unit and a connecting disc for installing a polishing grinding wheel, wherein the guide sleeve of the polishing unit and the connecting disc for installing the polishing grinding wheel are assembled on a polishing motor through the first assembling tool, a polishing unit support of the polishing unit is fixed through a second assembling tool, a guide post of the polishing unit is assembled on the polishing unit support, the assembled polishing motor is assembled on the guide post through the guide sleeve, an oil cylinder support is pre-installed on the guide post, a lifting oil cylinder is installed on the oil cylinder support, the driving end of the lifting oil cylinder is fixedly connected with the polishing motor, and the guide post is adjusted at the second assembling tool to control the coaxiality of the guide post and the guide sleeve within a tolerance range, and then the oil cylinder support and the guide post are fixed.
In summary, the differential pressure test can be performed on the second assembly tool, so that the differential pressure test can be performed without being limited by space, and the guide post influencing the differential pressure can be adjusted at any time according to the differential pressure condition, so that the polishing unit of the polishing vehicle can be adjusted conveniently.
In addition, the invention only needs two assembly stations, and completes the adjustment of the parallelism of the guide posts in the assembly process, thereby improving the assembly efficiency and reducing the tooling cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of a polishing unit of a polishing pad disclosed in an embodiment of the present invention;
FIG. 2 is a front view of a first assembly fixture disclosed in an embodiment of the present invention;
FIG. 3 is a side view of a first assembly fixture disclosed in an embodiment of the present invention;
FIG. 4 is a top view of a first assembly fixture disclosed in an embodiment of the present invention;
fig. 5 is a schematic perspective view of a second assembly fixture according to an embodiment of the present invention;
FIG. 6 is a side view of a second assembly fixture disclosed in an embodiment of the present invention;
Fig. 7 is a schematic perspective view of a polishing unit seat according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention discloses an assembling method and an assembling tool for a polishing unit of a polishing vehicle, which are used for conveniently adjusting the polishing unit of the polishing vehicle.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a polishing unit of a polishing vehicle comprises a polishing unit support 06, a polishing motor 01, a connecting disc 07, an oil cylinder support 02, a lifting oil cylinder 03, a guide sleeve 04 and a guide pillar 05, wherein the guide pillar 05 is arranged on the polishing unit support 06, the oil cylinder support 02 is used for installing the lifting oil cylinder 03, the guide sleeve 04 is slidably sleeved on the guide pillar 05, the lifting oil cylinder 03 is arranged on the oil cylinder support 02, the polishing motor 01 is connected with a driving end of the lifting oil cylinder 03 and the guide sleeve 04, and the polishing motor 01 is connected with a polishing grinding wheel through the connecting disc 07.
The polishing motor 01 is matched with the guide post 05 on the polishing unit bracket 06 through the guide sleeve 04, and the guide sleeve 04 moves axially along the guide post 05 through the expansion and contraction of the lifting oil cylinder 03, so that the pressing polishing operation of the polishing grinding wheel is realized by matching with the rotation of the polishing motor 01.
The embodiment of the invention discloses an assembling method of a polishing unit of a polishing vehicle, which comprises the following steps:
s1, assembling a guide sleeve 04 of a polishing unit and a connecting disc 07 for installing a polishing grinding wheel on a polishing motor 01 by using a first assembling tool;
S2, fixing a polishing unit support 06 of a polishing unit by utilizing a second assembly tool, then assembling a guide post 05 of the polishing unit on the polishing unit support 06, assembling the polishing motor 01 assembled in the step S1 on the guide post 05 through a guide sleeve 04, then pre-installing an oil cylinder support 02 on the guide post 05, installing a lifting oil cylinder 03 on the oil cylinder support 02, and fixedly connecting the driving end of the lifting oil cylinder 03 with the polishing motor 01;
s3, adjusting the guide post 05 to control the coaxiality of the guide post 05 and the guide sleeve 04 within a tolerance range, and then fixing the oil cylinder support 02 and the guide post 05.
The method comprises the steps of firstly assembling a guide sleeve 04 of a polishing unit and a connecting disc 07 for installing a polishing grinding wheel on the polishing motor 01 by using a first assembling tool, then fixing a polishing unit support 06 of the polishing unit by using a second assembling tool, then assembling a guide pillar 05 of the polishing unit on the polishing unit support 06, assembling the assembled polishing motor 01 on the guide pillar 05 by using the guide sleeve 04, then pre-installing an oil cylinder support 02 on the guide pillar 05, installing a lifting oil cylinder 03 on the oil cylinder support 02, enabling the driving end of the lifting oil cylinder 03 to be fixedly connected with the polishing motor 01, finally adjusting the guide pillar 05 to control the coaxiality of the guide pillar 05 and the guide sleeve 04 within a tolerance range, and finally fixing the oil cylinder support 02 and the guide pillar 05, thereby completing the assembly of the polishing unit.
In summary, the differential pressure test can be performed on the second assembly tool, so that the differential pressure test can be performed without being limited by space, and the guide post 05 influencing the differential pressure can be adjusted at any time according to the differential pressure condition, so that the polishing unit of the polishing vehicle can be adjusted conveniently.
In addition, the invention only needs two assembly stations, and completes the adjustment of the parallelism of the guide post 05 in the assembly process, thereby improving the assembly efficiency and reducing the tooling cost.
In order to simplify the structure, the two guide posts 05 comprise at least one eccentric guide post, the oil cylinder support 02 is overlapped with the top ends of the two guide posts 05, and in step S3, the coaxiality of the guide posts 05 and the guide sleeves 04 is adjusted by adjusting one of the eccentric guide posts. According to the application, at least one guide post 05 is an eccentric guide post, so that the parallelism of the two guide posts 05 can be conveniently adjusted, and the coaxiality of the guide posts 05 and the guide sleeve 04 can be conveniently adjusted. Of course, the guide post 05 can also be matched with the adjustment of the mounting hole on the polishing unit bracket 06 to achieve the same purpose of adjusting the parallelism of the guide post 05 and the coaxiality of the guide sleeve 04.
Referring to fig. 2-7, the embodiment of the invention further discloses an assembling tool for a polishing unit of a polishing vehicle, which comprises a first assembling tool for assembling a guide sleeve 04 of the polishing unit and a connecting disc 07 for installing a polishing grinding wheel on a polishing motor 01, a second assembling tool for fixing a polishing unit bracket 06 of the polishing unit, then assembling a guide post 05 of the polishing unit on the polishing unit bracket 06, assembling the assembled polishing motor 01 on the guide post 05 through the guide sleeve 04, then pre-installing an oil cylinder bracket 02 on the guide post 05, installing a lifting oil cylinder 03 on the oil cylinder bracket 02, and fixedly connecting a driving end of the lifting oil cylinder 03 with the polishing motor 01, wherein the guide post 05 is adjusted at the second assembling tool to control the coaxiality of the guide post 05 and the guide sleeve 04 within a tolerance range, and then fixing the oil cylinder bracket 02 and the guide post 05.
The invention discloses an assembling tool of a polishing unit of a polishing machine, which comprises the steps of assembling a guide sleeve 04 of the polishing unit and a connecting disc 07 for installing a polishing grinding wheel on a polishing motor 01 by utilizing a first assembling tool, fixing a polishing unit support 06 of the polishing unit by utilizing a second assembling tool, assembling a guide pillar 05 of the polishing unit on the polishing unit support 06, assembling the assembled polishing motor 01 on the guide pillar 05 through the guide sleeve 04, pre-installing an oil cylinder support 02 on the guide pillar 05, installing a lifting oil cylinder 03 on the oil cylinder support 02, and fixedly connecting the driving end of the lifting oil cylinder 03 with the polishing motor 01, wherein the guide pillar 05 is adjusted at the second assembling tool so as to control the coaxiality of the guide pillar 05 and the guide sleeve 04 within a tolerance range, and then fixing the oil cylinder support 02 and the guide pillar 05.
In summary, the differential pressure test can be performed on the second assembly tool, so that the differential pressure test can be performed without being limited by space, and the guide post 05 influencing the differential pressure can be adjusted at any time according to the differential pressure condition, so that the polishing unit of the polishing vehicle can be adjusted conveniently.
In addition, the invention only needs two assembly stations, and completes the adjustment of the parallelism of the guide post 05 in the assembly process, thereby improving the assembly efficiency and reducing the tooling cost.
As shown in fig. 2-4, the first assembly fixture comprises a first assembly bracket 1, a motor fixing seat 2 arranged on the first assembly bracket 1, and a pressing piece capable of being matched with the motor fixing seat 2 to clamp the polishing motor 01. During assembly, the polishing motor 01 is firstly transversely placed on the motor fixing seat 2 (namely, the axial direction is along the horizontal direction), then the polishing motor 01 is pressed on the motor fixing seat 2 from the upper side by utilizing a pressing piece, so that the fixing stability of the polishing motor 01 is ensured, and then the guide sleeve 04 and the connecting disc 07 are installed. Of course, the first assembling tool may also only include a pressing member to fix the bracket of the polishing motor 01 on the first assembling bracket 1.
In order to improve the fixing strength of the electric motor, the motor fixing seat 2 is provided with an arc-shaped positioning groove in positioning fit with the outer peripheral surface of the polishing motor 01, and the pressing piece is provided with an arc-shaped pressing groove in positioning fit with the outer peripheral surface of the polishing motor 01. The application utilizes the arc-shaped positioning groove and the arc-shaped pressing groove to match with the outer peripheral surface of the limit polishing motor 01, and has better fixing effect. Of course, the application can also be provided with only arc-shaped positioning grooves or arc-shaped pressing grooves.
In order to simplify the structure, the pressing piece comprises a pressing plate 4 with an arc-shaped pressing groove, and a stud 3 for fixing the pressing plate 4 on the motor fixing seat 2, wherein the stud 3 is matched with an adjusting nut to realize that the fixing height of the pressing plate 4 is adjustable. The clamp plate 4 is compressed tightly at the motor 01 top of polishing at first, then makes clamp plate 4 and motor fixing base 2 fixed connection with the cooperation of adjusting nut and double-screw bolt 3 to can be applicable to the motor 01 of polishing of different specifications through adjusting nut adjusting the double-screw bolt 3 length that is located between clamp plate 4 and the motor fixing base 2, improved the commonality, convenient assembly simultaneously. Of course, the pressing plate 4 may also be fixed on the first assembly bracket 1, and the pressing member may also have other structures, such as an elastic fastening belt, a locking hoop, and the like.
In order to further optimize the technical scheme, a plurality of groups of fixing holes 5 for installing the studs 3 are arranged on the motor fixing seat 2 and are arranged along the length direction of the arc-shaped positioning groove. Specifically, four studs 3 are required to be matched when the pressing plate 4 is fixed, and the studs are divided into two groups, wherein each group comprises two fixing holes 5 which are oppositely arranged.
As shown in fig. 5-7, the second assembly fixture comprises a second assembly bracket 6, and a polishing unit seat 7 of the polishing unit bracket 06 is fixed by a fixing piece, wherein the polishing unit seat 7 is arranged on the second assembly bracket 6. The grinding unit bracket 06 is fixed through the grinding unit seat 7, so that the assembly is convenient. Of course, the present application may also provide mounting portions such as mounting holes or mounting protrusions for mounting the sanding unit holder 06 directly on the second assembly holder 6.
The second assembly tool and the assembly platform of the second assembly tool have the advantages of simple structure and lower cost, and the height of the assembly platform is fixed operation height selected through practice.
Preferably, the polishing unit seat 7 comprises a bottom positioning frame 71 for positioning the bottom mounting feet of the polishing unit support 06, and four positioning upright posts 72 arranged on the bottom positioning frame 71, wherein the positioning upright posts 72 are used for limiting the periphery of the polishing unit support 06. During assembly, the bottom mounting feet of the polishing unit support 06 are respectively positioned at four connecting corners of the bottom positioning frame 71, so that the bottom of the polishing unit support 06 is positioned, the periphery of the polishing unit support 06 is positioned through the positioning upright post 72, and the dual positioning of the polishing unit support 06 is realized, and the positioning effect is good. Of course, the application can also realize the positioning of the grinding unit bracket 06 by forming positioning holes on the grinding unit seat 7.
For easy assembly, the fixing member comprises a positioning bolt 8 capable of abutting against the top surface of the grinding unit bracket 06, and the positioning bolt 8 axially and adjustably passes through the top end of the positioning upright post 72 along the horizontal direction through a locking nut. The positioning bolt 8 of this embodiment can not only be to polishing unit support 06 top surface location, but also can cooperate polishing unit support 06 of unit seat 7 fixed polishing unit support 06, and polishing unit support 06's fixed strength is better. Alternatively, the fixing member may be other structures, such as a fixing bolt passing through the polishing unit bracket 06.
Specifically, the positioning bolt 8 is a hexagon head bolt, and the lock nut is a hexagon nut.
The assembly process of the invention on the second assembly tool is as follows:
The polishing unit support 06 is clamped on the bottom positioning frame 71 of the polishing unit seat 7, and then the length of the hexagon head bolt extending to the top surface of the polishing unit support 06 is adjusted by adjusting the hexagon nut so as to fix the polishing unit support 06. Then two guide posts 05 are assembled, the assembled polishing motor 01 is assembled on the guide posts 05 through guide sleeves 04, an oil cylinder bracket 02 and a lifting oil cylinder 03 are pre-installed, one eccentric guide post is adjusted to adjust coaxiality between the two guide sleeves 04 and the guide posts 05, so that the coaxiality between the two guide posts 04 and the guide posts 05 is controlled within a tolerance range, the guide posts 05 can freely slide on the guide sleeves 04 under the action of the lifting oil cylinder 03 without clamping stagnation, and accordingly the pressure difference of a polishing grinding wheel lifted and pressed by the polishing motor 01 is ensured to be within a technical requirement range, and polishing quality requirements are met. After the coaxiality between the guide post 05 and the guide sleeve 04 is adjusted, the fastening bolt on the polishing unit bracket 06 is screwed down, so that the position of the guide post 05 is fixed, and the final assembly is completed.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010870779.8A CN111851178B (en) | 2020-08-26 | 2020-08-26 | Assembly method and assembly tool for grinding unit of grinding vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010870779.8A CN111851178B (en) | 2020-08-26 | 2020-08-26 | Assembly method and assembly tool for grinding unit of grinding vehicle |
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| CN111851178A CN111851178A (en) | 2020-10-30 |
| CN111851178B true CN111851178B (en) | 2025-01-24 |
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| CN113211247A (en) * | 2021-05-10 | 2021-08-06 | 陈乃鹏 | Inner polygon machining device |
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| CN212452134U (en) * | 2020-08-26 | 2021-02-02 | 北京中车重工机械有限公司 | Assembly tool for polishing unit of polishing vehicle |
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| CN104368970B (en) * | 2014-10-30 | 2017-01-25 | 安徽捷迅光电技术有限公司 | Box installing and positioning tool |
| DE202017000696U1 (en) * | 2017-02-09 | 2017-03-16 | Robel Bahnbaumaschinen Gmbh | Grinding machine for grinding rails of a track |
| CN111155380A (en) * | 2020-01-20 | 2020-05-15 | 株洲时代电子技术有限公司 | Rail grinding wagon |
| CN111235982B (en) * | 2020-01-20 | 2025-02-14 | 株洲时代电子技术有限公司 | Rail grinding trolley |
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| CN212452134U (en) * | 2020-08-26 | 2021-02-02 | 北京中车重工机械有限公司 | Assembly tool for polishing unit of polishing vehicle |
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