CN106868964B - A kind of rail grinding machine traveling shifting system - Google Patents
A kind of rail grinding machine traveling shifting system Download PDFInfo
- Publication number
- CN106868964B CN106868964B CN201710103736.5A CN201710103736A CN106868964B CN 106868964 B CN106868964 B CN 106868964B CN 201710103736 A CN201710103736 A CN 201710103736A CN 106868964 B CN106868964 B CN 106868964B
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- Prior art keywords
- modules
- running shaft
- crawl
- host computer
- control valve
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/26—Generation or transmission of movements for final actuating mechanisms
- F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
- F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
- F16H2061/308—Modular hydraulic shift units, i.e. preassembled actuator units for select and shift movements adapted for being mounted on transmission casing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Control Of Fluid Gearings (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention discloses a kind of rail grinding machine traveling shifting systems, including：Host computer, bottom DI modules, bottom DO modules, displacement control valve, engine, traveling hydraulic pump and motor.Crawl instruction is sent to bottom DO modules, bottom DO modules compare and the target gear that is provided by host computer in being instructed according to crawl and calculate the control signal for needing given displacement control valve by the collected running shaft current gear of bottom DI modules by host computer.Engine drives traveling hydraulic pump with fixed rotating speed, and bottom DO modules control traveling hydraulic pump to the given hydraulic flow of motor output by displacement control valve, and drive running shaft by motor.The present invention, which can solve existing shift mode traveling hydraulic pump discharge size and hydraulic-driven power retention time, artificially to be controlled, and there is technical issues that operating difficulties, apical tooth phenomenon are serious, shift gears.
Description
Technical field
The present invention relates to rail engineering machinery technical fields, are changed more particularly, to a kind of traveling applied to rail grinding machine
Gear system.
Background technology
Currently, vehicle shift is mainly by driving gearshift to push de- extension shift fork to drive sliding to move set movement,
Reach the internal spline and engaging between input shaft and the external splines of output shaft that sliding moves set.Sliding moves set by input shaft and output
Axis connection together, to realize power transmission, or moves the flower of the external splines or gear and output block that cover by sliding
Key or gear engage to realize that power transmits.But in actual mechanical process, due to the engagement of the spline or gear that need to engage
Slot might not be in positive status, so the case where " tooth top tooth " cannot hang up on file can often occur, sometimes even due to repeating
Shelves apical tooth is hung, mesh piece end face is led to problems such as to burst apart, therefore it is necessary to existing extension shelves system is improved.
Domestic existing gearshift is all to operate gear shift knobs by operator to return come hardware activation hydraulic system at present
Whether road to drive running shaft rotation to achieve the purpose that shift, and is shifted gears to watch by operator's naked eyes in place and be learnt.
Existing manual shift gear and a kind of hardware implementation mode, i.e., by inching button crawl, hardware activation hydraulic circuit changes
Gear, the time that the inching button operation unlike foregoing manner gives hydraulic pump discharge are determined by the length of crawl time
's.
Existing shift mode gives traveling hydraulic pump discharge by then passing through operation gear shift knobs, therefore traveling hydraulic pump is arranged
Amount size and hydraulic-driven power retention time can only artificially control, and exist simultaneously that operating difficulties, apical tooth phenomenon be serious, shift efficiency
The technological deficiencies such as low.
Invention content
In view of this, the purpose of the present invention is to provide a kind of rail grinding machine traveling shifting system, to solve existing change
Gear mode traveling hydraulic pump discharge size and hydraulic-driven power retention time can only artificially control, and there are operating difficulties, apical tooth are existing
As the technical issues of serious, shift inefficiency.
In order to achieve the above-mentioned object of the invention, the present invention specifically provides a kind of technology of rail grinding machine traveling shifting system
Implementation, a kind of rail grinding machine traveling shifting system are shifted gears for controlling running shaft, including：Host computer, bottom DI moulds
Block, bottom DO modules, displacement control valve, engine, traveling hydraulic pump and motor.By the host computer to the bottom DO moulds
Block sends crawl instruction, the target shift that the bottom DO modules are compared and provided by the host computer in being instructed according to the crawl
Position is calculated with the current gear by the collected running shaft of bottom DI modules to be needed to give the displacement control valve
Control signal.The engine drives the traveling hydraulic pump, the bottom DO modules to pass through the discharge capacity control with fixed rotating speed
Valve processed controls the traveling hydraulic pump to the given hydraulic flow of motor output, and drives the traveling by the motor
Axis.
Preferably, the system also includes the EDA being connected with the motor, in the case where the motor flow is certain,
The EDA adjusts the rotating speed of the motor by adjusting the discharge capacity of the motor.
Preferably, give the displacement control valve control signal include give the traveling hydraulic pump displacement size with
It is applied to the retention time of the hydraulic-driven power of the running shaft.
Preferably, if the bottom DO modules compare the target gear that the host computer provides and by the bottom DI
The current gear of the collected running shaft of module mismatches, then the bottom DO modules are driven according to the hydraulic pressure that the host computer is set
The corresponding running shaft fine motion of power drive is not required to apply liquid to the running shaft again if target gear and current gear match
Press driving force.
Preferably, the bottom DO modules detect whether the host computer sends out crawl instruction in real time, if detected
Crawl instructs, then calculates the current vehicle speed of the rail grinding machine, and only speed is less than in the case of the maximum shift speed of setting,
The crawl instruction is effective.
Preferably, effective in crawl instruction, the bottom DO modules judge that the crawl instruction is a little
Instruction or crawl instruct backward before trend.It is instructed forward if it is crawl, and the current gear and target of the running shaft
Gear is inconsistent, then gives the corresponding discharge capacity of the displacement control valve according to setting value.If the current gear of the running shaft
It matches, is then no longer needed to the displacement control valve discharge capacity with target gear.It is instructed backward if it is crawl, and the running shaft
Current gear and target gear it is inconsistent, then the corresponding discharge capacity of the displacement control valve is given according to setting value.If described
The current gear and target gear of running shaft match, then no longer need to the displacement control valve discharge capacity.
Preferably, the host computer carries touch screen, when operator is by operating band by the host computer of touch screen, clicking point
Move button 1 time, then the host computer issues the crawl and instructs to the bottom DO modules automatically.
Preferably, the displacement size of the given traveling hydraulic pump of the bottom DO modules and it is applied to the running shaft
Retention time of hydraulic-driven power can be modified by the interface parameter of the host computer setting.
Preferably, the bottom DO modules export control signal by PWM port and drive the displacement control valve events, institute
It states displacement control valve and uses proportioning valve.
By implementing the technical solution for the rail grinding machine traveling shifting system that aforementioned present invention provides, have following beneficial
Effect：
(1) of the invention to replace traditional hardware shift mode, traveling hydraulic pump discharge using Intellectualized electric shift control
Size and hydraulic-driven power retention time, which can be set and be realized by host computer, to be automatically controlled, serious to solve apical tooth phenomenon
The problem of；
(2) present invention has design without special design shift control circuit without designing gear shift knobs and point driving switch
Cost is lower, and traveling hydraulic pump discharge size and hydraulic-driven power retention time more optimize, easy to operate, and shift success rate is high
The advantages that.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described.It should be evident that the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other embodiments are obtained according to these attached drawings.
Fig. 1 is a kind of system structure diagram of specific embodiment of rail grinding machine traveling shifting system of the present invention；
Fig. 2 is that a kind of program circuit of specific embodiment of rail grinding machine traveling process for gear based on present system shows
It is intended to；
In figure：1- host computers, 2- bottom DI modules, 3- bottom DO modules, 4- displacement control valves, 5- engines, 6- travelings
Hydraulic pump, 7-EDA, 8- motors, 9- running shafts.
Specific implementation mode
For the sake of quoting and understanding, by the technical term hereinafter used, writes a Chinese character in simplified form or abridge and be described below：
Bottom DO modules：The abbreviation of bottom digital output module；
Bottom DI modules：The abbreviation of bottom digital quantity input module；
PWM：Pulse Width Modulation, the abbreviation of pulse width modulation；
EDA：The abbreviation of motor displacement adjusting circuit board.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention carries out clear, complete description.Obviously, described embodiment is only
Only it is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
All other embodiment that art personnel are obtained without creative efforts belongs to the model that the present invention protects
It encloses.
As shown in Figure 1 and Figure 2, the specific embodiment of rail grinding machine traveling shifting system of the present invention is given, under
The invention will be further described with reference to the drawings and specific embodiments in face.
As shown in Fig. 1, a kind of specific embodiment of rail grinding machine traveling shifting system, is changed for controlling running shaft 9
Gear, system include：Host computer 1, bottom DI modules 2, bottom DO modules 3, displacement control valve 4, engine 5,6 and of traveling hydraulic pump
Motor 8.Operator sends crawl instruction by host computer 1 to bottom DO modules 3, and bottom DO modules 3 compare and referred to according to crawl
The target gear provided by host computer 1 in order is calculated with the current gear by 2 collected running shaft 9 of bottom DI modules and is needed
Give the control signal of displacement control valve 4.Engine 5 drives traveling hydraulic pump 6 with fixed rotating speed, and bottom DO modules 3 pass through
Displacement control valve 4 controls traveling hydraulic pump 6 to the given hydraulic flow of the output of motor 8, and drives running shaft 9 by motor 8.It is upper
Machine 1 carries touch screen, when operator is by operating host computer 1 of the band by touch screen, clicks inching button 1 time, then host computer 1 from
It is dynamic to issue the crawl and instruct to bottom DO modules 3.
Rail grinding machine traveling shifting system further includes the EDA 7 being connected with motor 8, in the certain situation of 8 flow of motor
Under, EDA 7 adjusts the rotating speed of motor 8 by adjusting the discharge capacity of motor 8.The control signal of given displacement control valve 4 is further
Including giving the displacement size (aperture by controlling displacement control valve 4 is realized) of traveling hydraulic pump 6 and being applied to running shaft 9
The retention time of hydraulic-driven power (retention time by controlling displacement control valve 4 is realized).The given traveling of bottom DO modules 3
The retention time of the displacement size of hydraulic pump 6 and the hydraulic-driven power for being applied to running shaft 9 can be by the interface parameter of host computer 1
It modifies setting.If bottom DO modules 3 compare the target gear that host computer 1 provides and are collected with by bottom DI modules 2
The current gear of running shaft 9 mismatch, then the hydraulic-driven power drive that bottom DO modules 3 are set according to host computer 1 is corresponding
9 fine motion of running shaft is not required to apply hydraulic-driven power to running shaft 9 again if target gear and current gear match.Bottom DO
Module 3 can be exported control signal by PWM port and displacement control valve 4 is driven to act, and displacement control valve 4 uses proportioning valve, bottom
DO modules 3 control the discharge capacity of traveling hydraulic pump 6 by the aperture of Displacement Regulation control valve 4, to control the discharge capacity of motor 8.
Whether detection host computer 1 sends out crawl instruction to bottom DO modules 3 in real time, if having detected crawl instruction, counts
The current vehicle speed of rail grinding machine is calculated, only speed is less than in the case of the maximum shift speed of setting, and crawl instruction is effective.Point
In the case of dynamic instruction is effective, bottom DO modules 3 judge that crawl instruction is that crawl instructs forward or crawl instructs backward.If
Be that crawl instructs forward, and state running shaft 9 current gear and target gear it is inconsistent, then give fixed displacement control according to setting value
4 corresponding discharge capacity of valve processed.If the current gear and target gear of running shaft 9 match, no longer need to give displacement control valve 4 row
Amount.It is instructed backward if it is crawl, and the current gear of running shaft 9 and target gear are inconsistent, then it is given according to setting value
4 corresponding discharge capacity of displacement control valve.If the current gear and target gear of running shaft 9 match, no longer need to displacement control
4 discharge capacity of valve.
A kind of specific embodiment of the rail grinding machine traveling process for gear based on above system, includes the following steps：
S100) operator sends crawl instruction by host computer 1 to bottom DO modules 3；
S200) bottom DO modules 3 compare and the target gear that is provided by host computer 1 in being instructed according to crawl and pass through bottom
The current gear of 2 collected running shaft 9 of DI modules calculates the control signal for needing given displacement control valve 4；
S300) engine 5 drives traveling hydraulic pump 6 with fixed rotating speed, and bottom DO modules 3 are controlled by displacement control valve 4
Traveling hydraulic pump 6 drives running shaft 9 to the given hydraulic flow of the output of motor 8 by motor 8.The control of given displacement control valve 4
Signal processed includes the retention time of the displacement size and the hydraulic-driven power for being applied to running shaft 9 of given traveling hydraulic pump 6.
Step S300 further includes following procedure：
In the case where 8 flow of motor is certain, the discharge capacity of motor 8 is adjusted by EDA 7 to adjust the rotating speed of motor 8.
Step S200 further includes following procedure：
If bottom DO modules 3 compare the target gear that host computer 1 provides and by the 2 collected travelings of bottom DI modules
The current gear of axis 9 mismatches, then the corresponding running shaft of the hydraulic-driven power drive that bottom DO modules 3 are set according to host computer 19
Fine motion is not required to apply hydraulic-driven power to running shaft 9 again if target gear and current gear match.
Step S100 further includes following procedure：
Whether detection host computer 1 sends out crawl instruction to bottom DO modules 3 in real time, if having detected crawl instruction, counts
The current vehicle speed of rail grinding machine is calculated, only speed is less than in the case of the maximum shift speed of setting, and crawl instruction is effective.
As shown in Fig. 2, rail grinding machine traveling process for gear further comprises the steps：
A) bottom DO modules 3 have detected whether crawl instruction；
B) if there is crawl instructs, then the traveling speed of rail grinding machine is calculated；
C) if the traveling speed of rail grinding machine is less than or equal to the maximum shift speed of setting, shifting commands have
Effect, and store the instruction of this crawl；
D) if the traveling speed of rail grinding machine is more than the maximum shift speed of setting, traveling speed is too fast, does not permit
Permitted shifted gears (because being easy to break shift tooth in high speed traveling shift), and stores the instruction of this crawl；
E) when crawl instruction is effective, bottom DO modules 3 judge that crawl instruction is that crawl instructs forward or crawl refers to backward
It enables；
F it) is instructed forward if it is crawl, and the current gear of running shaft 9 and target gear are inconsistent, then according to setting
Value gives 4 corresponding discharge capacity of displacement control valve；If the current gear and target gear of running shaft 9 match, discharge is no longer needed to
4 discharge capacity of control valve；
G it) is instructed backward if it is crawl, and the current gear of running shaft 9 and target gear are inconsistent, then according to setting
Value gives 4 corresponding discharge capacity of displacement control valve；If the current gear and target gear of running shaft 9 match, discharge is no longer needed to
4 discharge capacity of control valve；
H) size of discharge capacity and its retention time can be arranged by the interface of host computer 1, can lead to after debugging out optimized parameter
Interface saving is crossed to get off (step is not shown in figure).
In above-mentioned steps, when operator clicks inching button 1 time, then host computer 1 issues the crawl and instructs the bottom of to automatically
Layer DO modules 3.The displacement size of the given traveling hydraulic pump 6 of bottom DO modules 3 and the hydraulic-driven power for being applied to running shaft 9
Retention time can be modified setting by the interface parameter of host computer 1.
The rail grinding machine traveling shifting system of the above-mentioned specific embodiment description of the present invention is realized a little by intelligentized control method
Dynamic gearshift function, the monitoring current gear automatically of bottom DO modules 3 when shift, by comparing target gear and feedback gear, for
The unmatched running shaft of gear 9 gives certain driving force fine motion until in place.For in place then not give driving force, significantly
Reduce the abrasion of power shift gear case, while also substantially increasing the success rate of shift.Meanwhile bottom DO modules 3 detect automatically
Whether shift in place, not meeting in place goes driving running shaft 9 until in place to certain microkinetic, the size of microkinetic and holding
Time is can be configured and change by the interface of host computer 1, can ensure that selection one is most in debugging process in this way
The retention time of good microkinetic and microkinetic.
By implementing the technical solution of the rail grinding machine traveling shifting system of specific embodiment of the invention description, can produce
Raw following technique effect：
(1) the rail grinding machine traveling shifting system of specific embodiment of the invention description is using Intellectualized electric shift control
Replace traditional hardware shift mode, traveling hydraulic pump discharge size and hydraulic-driven power retention time that can be set by host computer
Determine and realize to automatically control, to solve the problems, such as that apical tooth phenomenon is serious；
(2) the rail grinding machine traveling shifting system of specific embodiment of the invention description is without special design shift control electricity
Road has features designed to this lower, traveling hydraulic pump discharge size and hydraulic-driven power without designing gear shift knobs and point driving switch
The advantages that retention time more optimizes, easy to operate, and shift success rate is high.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form.Though
So the present invention has been disclosed with preferred embodiment as above, and however, it is not intended to limit the invention.It is any to be familiar with those skilled in the art
Member, in the case where not departing from the Spirit Essence and technical solution of the present invention, all using in the methods and techniques of the disclosure above
Appearance makes many possible changes and modifications to technical solution of the present invention, or is revised as the equivalent embodiment of equivalent variations.Therefore,
Every content without departing from technical solution of the present invention is made to the above embodiment any simple according to the technical essence of the invention
Modification, equivalent replacement, equivalence changes and modification still fall within the range of technical solution of the present invention protection.
Claims (9)
1. a kind of rail grinding machine traveling shifting system, for controlling running shaft (9) shift, which is characterized in that including：Host computer
(1), bottom DI modules (2), bottom DO modules (3), displacement control valve (4), engine (5), traveling hydraulic pump (6) and motor
(8)；Crawl instruction is sent to the bottom DO modules (3) by the host computer (1), bottom DO modules (3) comparison is simultaneously
The target gear provided by the host computer (1) in being instructed according to the crawl is collected with by the bottom DI modules (2)
Running shaft (9) current gear calculate need give the displacement control valve (4) control signal；The engine (5)
The traveling hydraulic pump (6), the bottom DO modules (3) is driven to control institute by the displacement control valve (4) with fixed rotating speed
Traveling hydraulic pump (6) is stated to the given hydraulic flow of the motor (8) output, and the running shaft is driven by the motor (8)
(9)。
2. rail grinding machine traveling shifting system according to claim 1, it is characterised in that：The system also includes with institute
The connected EDA (7) of motor (8) is stated, in the case where the motor (8) flow is certain, the EDA (7) is by adjusting the horse
The rotating speed of the motor (8) is adjusted up to the discharge capacity of (8).
3. rail grinding machine traveling shifting system according to claim 1 or 2, it is characterised in that：Give the discharge capacity control
The control signal of valve (4) processed includes the displacement size for giving the traveling hydraulic pump (6) and the liquid for being applied to the running shaft (9)
Press the retention time of driving force.
4. rail grinding machine traveling shifting system according to claim 3, it is characterised in that：If the bottom DO modules
(3) compare target gear that the host computer (1) provides with by the collected running shaft of the bottom DI modules (2) (9)
Current gear mismatches, then the hydraulic-driven power drive that the bottom DO modules (3) set according to the host computer (1) is corresponding
Running shaft (9) fine motion is not required to apply hydraulic-driven to the running shaft (9) again if target gear and current gear match
Power.
5. rail grinding machine traveling shifting system according to claim 1,2 or 4, it is characterised in that：The bottom DO moulds
Block (3) detects whether the host computer (1) sends out crawl instruction in real time, if having detected crawl instruction, calculates the steel
The current vehicle speed of rail grinding machine, only speed are less than in the case of the maximum shift speed of setting, and the crawl instruction is effective.
6. rail grinding machine traveling shifting system according to claim 5, it is characterised in that：It is effective in crawl instruction
In the case of, the bottom DO modules (3) judge that the crawl instruction is that crawl instructs forward or crawl instructs backward；If
It is that crawl instructs forward, and the current gear of the running shaft (9) and target gear are inconsistent, then give institute according to setting value
State displacement control valve (4) corresponding discharge capacity；If the current gear and target gear of the running shaft (9) match, no longer need to
Give the displacement control valve (4) discharge capacity；It is instructed backward if it is crawl, and the current gear and target of the running shaft (9)
Gear is inconsistent, then gives the displacement control valve (4) corresponding discharge capacity according to setting value；If running shaft (9) work as
Preceding gear and the matching of target gear, then no longer need to give the displacement control valve (4) discharge capacity.
7. the rail grinding machine traveling shifting system according to claim 1,2,4 or 6, it is characterised in that：The host computer
(1) carry touch screen, when operator is by operating host computer (1) of the band by touch screen, click inching button 1 time, then it is described on
Position machine (1) issues the crawl and instructs to the bottom DO modules (3) automatically.
8. rail grinding machine traveling shifting system according to claim 7, it is characterised in that：The bottom DO modules (3)
The retention time of the displacement size of the given traveling hydraulic pump (6) and the hydraulic-driven power for being applied to the running shaft (9)
Can be modified setting by the interface parameter of the host computer (1).
9. the rail grinding machine traveling shifting system according to claim 1,2,4,6 or 8, it is characterised in that：The bottom
DO modules (3) export control signal by PWM port and the displacement control valve (4) are driven to act, and the displacement control valve (4) is adopted
Use proportioning valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710103736.5A CN106868964B (en) | 2017-02-24 | 2017-02-24 | A kind of rail grinding machine traveling shifting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710103736.5A CN106868964B (en) | 2017-02-24 | 2017-02-24 | A kind of rail grinding machine traveling shifting system |
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| Publication Number | Publication Date |
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| CN106868964A CN106868964A (en) | 2017-06-20 |
| CN106868964B true CN106868964B (en) | 2018-10-12 |
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| CN201710103736.5A Active CN106868964B (en) | 2017-02-24 | 2017-02-24 | A kind of rail grinding machine traveling shifting system |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330759B (en) * | 2010-07-12 | 2013-04-10 | 上海捷能汽车技术有限公司 | Hydraulic system and hybrid power vehicle comprising same |
| KR20130061880A (en) * | 2011-12-02 | 2013-06-12 | 현대중공업 주식회사 | Inching function mecahnism using proportioanl valve |
| CN102829178A (en) * | 2012-09-06 | 2012-12-19 | 三一重工股份有限公司 | Transmission system shifting control method of hydraulic motor |
| CN104358863B (en) * | 2014-10-29 | 2017-03-22 | 苏州大方特种车股份有限公司 | Mechanical and automatic gear shifting control device |
| CN105864419B (en) * | 2015-01-22 | 2018-01-05 | 国立屏东科技大学 | Gearbox automatic shift system |
| JP6195315B2 (en) * | 2015-07-31 | 2017-09-13 | 本田技研工業株式会社 | Clutch hydraulic control circuit |
| CN204985413U (en) * | 2015-09-02 | 2016-01-20 | 西京学院 | Mining car automatic clutch operating mechanism |
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