CN110258212A - A kind of robotization rail grinding machine for grinding rails - Google Patents
A kind of robotization rail grinding machine for grinding rails Download PDFInfo
- Publication number
- CN110258212A CN110258212A CN201910579634.XA CN201910579634A CN110258212A CN 110258212 A CN110258212 A CN 110258212A CN 201910579634 A CN201910579634 A CN 201910579634A CN 110258212 A CN110258212 A CN 110258212A
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- China
- Prior art keywords
- component
- rail
- screw rod
- axial movement
- rod guide
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Links
- 230000033001 locomotion Effects 0.000 claims abstract description 45
- 238000005498 polishing Methods 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims description 7
- 241000233855 Orchidaceae Species 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 5
- 238000003754 machining Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The invention discloses a kind of robotization rail grinding machine for grinding rails, including mounting rack, the mounting rack is connect by first axle with swing arm, the swing arm is connect with swinging driving component, the swinging driving component is connect by second hinge with mounting rack, first axis moving assembly is provided in the swing arm, the first axis moving assembly is connect with rotary components, the rotary components are connect with the second axial movement component, are equipped with sanding component on the second axial movement component;The swinging driving component drives swing arm to wave, the first axis moving assembly drives rotary components to be axially moveable, the rotary components drive the second axial movement component radially to rotate, and the second axial movement component drives sanding component to be axially moveable stretching.Versatility of the present invention is good, and comprehensive polishing of rail can be completed by unimodule, is conducive to maintenance maintenance.
Description
Technical field
The present invention relates to track polishing maintenance areas, and in particular to a kind of robotization rail grinding machine for grinding rails.
Background technique
In recent years, with the continuous development of China Railway cause, the weight of train and rate of traffic flow of main line are not
Disconnected to increase, extensive Line for Passenger Transportation is constantly built, and improves railway operation comfort, safety is basic during railway development
It is required that.But since China's rate of traffic flow is big, train network upgrading, shipping is heavily loaded, driving condition is severe, train destroys track structure
Seriously, Rail Surface is also easy to produce the defects of fatigue crack, peeling, fat edges etc. and undulatory wear, to railway operation safety and surely
Qualitative generation seriously affects.
When nowadays carrying out polishing maintenance to rail, need that there is the arc-shaped side edges of top surface two and inner vertical side to rail
It is handled, existing equipment is provided with the sanding unit of different angle to realize comprehensive polishing of rail, due to angle position
Set relationship, there is some difference between each unit, poor universality, and maintenance maintenance difficulty is high.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of robotization rail grinding machine for grinding rails, and versatility is good, pass through list
Comprehensive polishing of rail can be completed in component, is conducive to maintenance maintenance.
In order to solve the above-mentioned technical problems, the present invention provides a kind of robotization rail grinding machine for grinding rails, including mounting rack,
The mounting rack is connect by first axle with swing arm, and the swing arm and swinging driving component axis connect, the swinging driving component
It is connect by second hinge with mounting rack, first axis moving assembly, the mobile group of the first axis is provided in the swing arm
Part is connect with rotary components, and the rotary components are connect with the second axial movement component, is pacified on the second axial movement component
Equipped with sanding component;
The swinging driving component drives swing arm to swing along first axle, and the first axis moving assembly drives rotation
Component is along the axial movement of first axis moving assembly, and the second axial movement of rotary components drive component is along rotary components
It circumferentially rotates, the second axial movement component drives sanding component to stretch out along the axial movement of the second axial movement component.
Further, the first axis moving assembly includes the first electronic screw rod guide rail, and the first electronic screw rod is led
Sinking linking arm is provided on the slide unit of rail, the sinking linking arm is connect with Rotation Method for Installation orchid, the rotary components setting
On Rotation Method for Installation orchid.
Further, the rotary end surface of the rotary components is parallel with the first electronic screw rod guide rail surface, the rotation group
Rotary connection plate is provided on the rotary end surface of part, the rotary connection plate is fixedly connected with the second electronic screw rod guide rail, described
Rotary connection plate is arranged in parallel with the first electronic screw rod guide rail surface, is vertically arranged with the second electronic screw rod guide rail surface.
Further, the second axial movement component includes the second electronic screw rod guide rail, and the second electronic screw rod is led
Mounting base is provided on the slide unit of rail, the sanding component is fixed in mounting base, the axis of the sanding component and
The axis of two electronic screw rod guide rails is parallel.
Further, the described second electronic screw rod guide rail surface is vertical setting with the first electronic screw rod guide rail surface.
Further, the sanding component includes polishing motor and bistrique, and the polishing motor band rotary bistrique rotates, described
Bistrique end abuts polishing with rail.
Further, the swinging driving component includes the first electric cylinders, and first electric cylinders one end and mounting rack axis connect, separately
One end and rocker arm shaft connect, and pass through axis downlink connection between the rocker arm and mounting rack.
Further, further include bearing seat, guide assembly, the mounting rack are provided between the bearing seat and mounting rack
On be provided with the second electric cylinders, second electric cylinders are connect with flake bar one end, and the flake bar other end and flake link block connect
It connects, the flake link block is fixed on bearing seat.
Further, the sanding component deviation setting, when sanding component is used for the inner vertical side of Problems in Machining of Steel Rail, institute
Sanding component is stated to be located in extreme lower position.
Beneficial effects of the present invention:
Cooperated using swing arm and swinging driving component, be able to drive two sides and top that sanding component is moved to rail,
Then the angular range that the angle between sanding component and rail can polish, and adjust is adjusted by rotary components
Greatly, it can guarantee that sanding component is opposite with the vertical edges of rail, achieve the effect that vertical edges of polishing, therefore it can use single
Structure can polish comprehensively to rail;
Swing arm and swinging driving component cooperatively form cradle structure, have movement range small, but the effect that mobile range is big,
So that multi-angle regulation is unfettered, it is adaptable;
While first axis moving assembly provides mobile stretching effect, also there is the function lifted safely in use
Can, avoid polishing when non-normal working from influencing the overall structure service life.
Detailed description of the invention
Fig. 1 is positive structure diagram of the invention;
Fig. 2 is backsight structural representation of the invention;
Fig. 3 is rotary components partial schematic diagram of the invention;
Position angle schematic diagram when Fig. 4 is rail grinding top surface of the present invention;
Position angle schematic diagram when Fig. 5 is rail grinding outer side edges cambered surface of the present invention;
Position angle schematic diagram when Fig. 6 is rail grinding inner side edge cambered surface of the present invention;
Position angle schematic diagram when Fig. 7 is rail grinding inner vertical side of the present invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Shown in referring to Figures 1 and 2, an embodiment of robotization rail grinding machine for grinding rails of the invention, including mounting rack 1,
Mounting rack is connect by first axle 111 with swing arm 2, and swing arm and 3 axis of swinging driving component connect, and swinging driving component passes through second
Hinge 112 is connect with mounting rack, and swing arm and the lifting of swinging driving component are mounted on mounting rack bottom, naturally it is also possible to which carry is set
It sets;First axis moving assembly 4 is provided in swing arm, first axis moving assembly is connect with rotary components 5, rotary components and
Two axial movement components 6 connect, and are equipped with sanding component 7 on the second axial movement component;The swing angle of swing arm is dynamic by waving
The telescopic adjustment of power component, swing arm and swinging driving component can cooperatively form triangular structure, reliable and stable after positioning;Swing arm
After swinging in place, first axis moving assembly can drive rotary components, the second axial movement component and sanding component to stretch out
To suitable polishing position, sanding component work, and stretched out by the second axial movement component and sanding component is against rail table
It polishes in face.
Wherein, it is touched with other component on track or foreign matter when there is sanding component failure or sanding component
When, first axis moving assembly can quickly stretch sanding component, play the function of lifting safely, avoid non-normal working
When influence integrally-built service life.
Main action relationships are as follows: swinging driving component drives swing arm to swing along first axle, the mobile group of first axis
Part drives rotary components along the axial movement of first axis moving assembly, and rotary components drive the second axial movement component along rotation
Component circumferentially rotates, and the second axial movement component drives sanding component to stretch out along the axial movement of the second axial movement component.
Specifically, referring to shown in Fig. 4, when needing to polishing at the top of rail, by mounting rack it is horizontally disposed based on,
Swinging driving component drives swing arm perpendicular to mounting rack, that is, is also perpendicularly at the top of rail, wherein the shifting of first axis moving assembly
Dynamic direction is consistent with along pendulum arm length direction, therefore first axis moving assembly is also perpendicularly at the top of rail, subsequent rotary components
Drive the second axial movement component rotates and perpendicular at the top of rail, i.e., sanding component is axially perpendicular at the top of rail, first axle
It is stretched out to moving assembly, rotary components, the second axial movement component and sanding component is moved on ready position, then polished
Component movement, and stretched out by the second axial movement component, sanding component is against on rail and is polished.
Referring to Figure 5, it when needing the outer arcuate side to rail to polish, is first stretched out simultaneously by swinging driving component
Swing arm is released, so that swing arm is moved to rail exterior portion, subsequent first axis moving assembly with the component that lower part connects
It stretches out, rotary components, the second axial movement component and sanding component is moved on ready position, rotary components movement, rotation
Component drives the second axial movement component rotational angle to adjust between the polishing end face and rail outer arcuate side of sanding component
Relative angle, last sanding component, which rotates and passes through the second axial movement component, to be stretched out, so that sanding component is connected to outside rail
It polishes on the arc-shaped side of side.
Referring to shown in Fig. 6, when needing the inside arc-shaped side to rail to polish, the outside of step and rail grinding
Arc-shaped side is almost the same, and difference is to be retracted by swinging driving component and pulls to swing arm on the inside of rail, so that swing arm is under
The component of portion's connection is moved to rail inboard portion.
Referring to shown in Fig. 7, the inner vertical side of rail is also polished, and is retracted by swinging driving component and by swing arm
It pulls on the inside of rail, so that swing arm is moved to rail inboard portion, the mobile group of subsequent first axis with the component that lower part connects
Part stretches out, and rotary components, the second axial movement component and sanding component is moved on ready position, subsequent rotary components are dynamic
Make, rotary components drive the second axial movement component rotational angle with the inner vertical side of rail vertical, at this time sanding component
Polishing, end face is i.e. parallel with the inner vertical side of rail, and last sanding component rotates and passes through the second axial movement component stretches out,
It polishes so that sanding component is connected on rail outer arcuate side.
And sanding component deviation is arranged, when sanding component is used for the inner vertical side of Problems in Machining of Steel Rail, sanding component position
In in extreme lower position, in mobile traveling process, sander is not in interference situation, guarantees that polishing operates normally, to protect
The effect that sanding component stablizes rail grinding inner vertical side is demonstrate,proved.
Phase when the above-mentioned outer arcuate for rail is polished in, inside arc-shaped side and inner vertical with sanding component
To position, mainly by the angular compliance that first axis moving assembly extended position and rotary components are adjusted determines sanding component and
Relative angle between rail.When swing arm mainly solves first axis moving assembly in adjusting, sanding component rotates mobile
First axis moving assembly can also be moved on suitable position and carry out angular adjustment by interference problem, swing arm.
Referring to shown in Fig. 3, first axis moving assembly includes the first electronic screw rod guide rail 8, the first electronic screw rod guide rail
Sinking linking arm 9 is provided on slide unit, sinking linking arm is connect with Rotation Method for Installation orchid 10, and rotary components setting is installed in rotation
On flange.Second axial movement component includes the second electronic screw rod guide rail 12, is provided on the slide unit of the second electronic screw rod guide rail
Mounting base 13, sanding component is fixed in mounting base, and the axis of the axis of sanding component and the second electronic screw rod guide rail is flat
Row, i.e. the polishing end face of sanding component are vertical with the axis of the second electronic screw rod guide rail.Pass through the first electronic screw rod guide rail and
Two electronic screw rod guide rail cooperations, realize the effect that any position can stop, and can optimize to adjusting position movement, guarantee fortune
The effect of interference is stablized and reduced to row.
Wherein, the second electronic screw rod guide rail surface is vertical setting with the first electronic screw rod guide rail surface, in rotation, the
Two electronic screw rod guide rails carry sanding component with surface, i.e., support sets or lift sanding component, and when lifting, sanding component can be straight
Effect rail is connect, movement will not generate interference.
Specifically, the rotary end surface of rotary components is parallel with the first electronic screw rod guide rail surface, the rotation of rotary components
Rotary connection plate 11 is provided on end face, rotary connection plate is fixedly connected with the second electronic screw rod guide rail, rotary connection plate and the
One electronic screw rod guide rail surface is arranged in parallel, is vertically arranged with the second electronic screw rod guide rail surface, to reach opposite position after assembling
The accuracy set.
Above-mentioned sanding component includes polishing motor 14 and bistrique 15, and polishing motor band rotary bistrique rotates, bistrique end with
Rail abuts polishing, simple and stable.
And above-mentioned swinging driving component includes the first electric cylinders 16, and first electric cylinders one end and mounting rack axis connect, the other end with
Rocker arm shaft connects, and by axis downlink connection between rocker arm and mounting rack, rocker arm is arranged by integral hoisting, and forms three with the first electric cylinders
Angle support effect, push-and-pull power effect is good, and oscillating motion is reliable and stable.
Above embodiments are only to absolutely prove preferred embodiment that is of the invention and being lifted, and protection scope of the present invention is not
It is limited to this.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in guarantor of the invention
Within the scope of shield.Protection scope of the present invention is subject to claims.
Claims (8)
1. a kind of robotization rail grinding machine for grinding rails, which is characterized in that including mounting rack, the mounting rack by first axle with
Swing arm connection, the swing arm and swinging driving component axis connect, and the swinging driving component is connect by second hinge with mounting rack,
First axis moving assembly is provided in the swing arm, the first axis moving assembly is connect with rotary components, the rotation
Component is connect with the second axial movement component, is equipped with sanding component on the second axial movement component;
The swinging driving component drives swing arm to swing along first axle, and the first axis moving assembly drives rotary components
Along the axial movement of first axis moving assembly, the rotary components drive the second axial movement component along the circumferential direction of rotary components
Rotation, the second axial movement component drive sanding component to stretch out along the axial movement of the second axial movement component.
2. robotization rail grinding machine for grinding rails as described in claim 1, which is characterized in that the sanding component deviation setting,
When sanding component is used for the inner vertical side of Problems in Machining of Steel Rail, the sanding component is located in extreme lower position.
3. robotization rail grinding machine for grinding rails as described in claim 1, which is characterized in that the first axis moving assembly packet
The first electronic screw rod guide rail is included, sinking linking arm, the sinking connection are provided on the slide unit of the first electronic screw rod guide rail
Arm is connect with Rotation Method for Installation orchid, and the rotary components setting is on Rotation Method for Installation orchid.
4. robotization rail grinding machine for grinding rails as claimed in claim 3, which is characterized in that the rotary end surface of the rotary components
It is parallel with the first electronic screw rod guide rail surface, rotary connection plate, the rotation are provided on the rotary end surface of the rotary components
Connecting plate is fixedly connected with the second electronic screw rod guide rail, and the rotary connection plate is parallel with the first electronic screw rod guide rail surface to be set
It sets, be vertically arranged with the second electronic screw rod guide rail surface.
5. robotization rail grinding machine for grinding rails as claimed in claim 3, which is characterized in that the second axial movement component packet
The second electronic screw rod guide rail is included, is provided with mounting base on the slide unit of the second electronic screw rod guide rail, the sanding component is fixed
It is arranged in mounting base, the axis of the sanding component is parallel with the axis of the second electronic screw rod guide rail.
6. robotization rail grinding machine for grinding rails as claimed in claim 5, which is characterized in that the second electronic screw rod guide rail meter
Face is vertical setting with the first electronic screw rod guide rail surface.
7. robotization rail grinding machine for grinding rails as described in claim 1, which is characterized in that the sanding component includes polishing electricity
Machine and bistrique, the polishing motor band rotary bistrique rotate, and the bistrique end abuts polishing with rail.
8. robotization rail grinding machine for grinding rails as described in claim 1, which is characterized in that the swinging driving component includes the
One electric cylinders, first electric cylinders one end and mounting rack axis connect, and the other end and rocker arm shaft connect, and pass through between the rocker arm and mounting rack
Axis downlink connection.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201910579634.XA CN110258212B (en) | 2019-06-28 | 2019-06-28 | Roboticized rail grinding device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201910579634.XA CN110258212B (en) | 2019-06-28 | 2019-06-28 | Roboticized rail grinding device |
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CN110258212A true CN110258212A (en) | 2019-09-20 |
CN110258212B CN110258212B (en) | 2024-06-11 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110804911A (en) * | 2019-11-25 | 2020-02-18 | 株洲时代电子技术有限公司 | Steel rail polishing unit |
CN111501443A (en) * | 2020-03-19 | 2020-08-07 | 湖南大学 | Steel rail grinding device |
CN115070534A (en) * | 2021-03-10 | 2022-09-20 | 广东博智林机器人有限公司 | A grinding device and polishing robot for climbing barrier is kept away to interior pole setting of frame |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3606705A (en) * | 1969-07-30 | 1971-09-21 | Speno International | Rail grinder |
US3945152A (en) * | 1974-03-06 | 1976-03-23 | Heinrich Helgemeir | Rail head re-form grinding machine |
US4920701A (en) * | 1988-03-04 | 1990-05-01 | Speno International S.A. | Device for the reprofiling of the rails of a railway track |
US6953386B1 (en) * | 2004-07-19 | 2005-10-11 | Railworks Corporation | Active spark control |
CN203096537U (en) * | 2013-01-11 | 2013-07-31 | 成都市新筑路桥机械股份有限公司 | Steel rail high speed polishing train |
JP2017057680A (en) * | 2015-09-18 | 2017-03-23 | 保線機器整備株式会社 | Rail head re-profiling machine and self-propelled rail head re-profiling device |
CN107938445A (en) * | 2017-12-26 | 2018-04-20 | 张文学 | Self-propelled rail grinding machine |
CN210657830U (en) * | 2019-06-28 | 2020-06-02 | 苏州睿友智能装备有限公司 | Robotic steel rail grinding device |
-
2019
- 2019-06-28 CN CN201910579634.XA patent/CN110258212B/en active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3606705A (en) * | 1969-07-30 | 1971-09-21 | Speno International | Rail grinder |
US3945152A (en) * | 1974-03-06 | 1976-03-23 | Heinrich Helgemeir | Rail head re-form grinding machine |
US4920701A (en) * | 1988-03-04 | 1990-05-01 | Speno International S.A. | Device for the reprofiling of the rails of a railway track |
US6953386B1 (en) * | 2004-07-19 | 2005-10-11 | Railworks Corporation | Active spark control |
CN203096537U (en) * | 2013-01-11 | 2013-07-31 | 成都市新筑路桥机械股份有限公司 | Steel rail high speed polishing train |
JP2017057680A (en) * | 2015-09-18 | 2017-03-23 | 保線機器整備株式会社 | Rail head re-profiling machine and self-propelled rail head re-profiling device |
CN107938445A (en) * | 2017-12-26 | 2018-04-20 | 张文学 | Self-propelled rail grinding machine |
CN210657830U (en) * | 2019-06-28 | 2020-06-02 | 苏州睿友智能装备有限公司 | Robotic steel rail grinding device |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110804911A (en) * | 2019-11-25 | 2020-02-18 | 株洲时代电子技术有限公司 | Steel rail polishing unit |
CN111501443A (en) * | 2020-03-19 | 2020-08-07 | 湖南大学 | Steel rail grinding device |
CN111501443B (en) * | 2020-03-19 | 2022-01-28 | 湖南大学 | Steel rail grinding device |
CN115070534A (en) * | 2021-03-10 | 2022-09-20 | 广东博智林机器人有限公司 | A grinding device and polishing robot for climbing barrier is kept away to interior pole setting of frame |
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