CN206012579U - Engineering truck and its parking braking hydraulic system - Google Patents
Engineering truck and its parking braking hydraulic system Download PDFInfo
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- CN206012579U CN206012579U CN201621031629.3U CN201621031629U CN206012579U CN 206012579 U CN206012579 U CN 206012579U CN 201621031629 U CN201621031629 U CN 201621031629U CN 206012579 U CN206012579 U CN 206012579U
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Abstract
The utility model provides a kind of engineering truck and its parking braking hydraulic system.The parking braking hydraulic system of the engineering truck that the utility model is provided, engineering truck have hydraulic direction clutch and the gearbox for exporting power, including：For the hydraulic disk brake of brake power output shaft, disk brake is attached on engineering truck；For detecting that the pressure sensor of the pressure in the hydraulic cylinder of direction clutch, pressure sensor are attached on the clutch of direction；For detecting that the velocity sensor of the rotating speed of power output shaft, velocity sensor are attached on gearbox；Brake control valve, the oil circuit being connected with the checking cylinder of disk brake are optionally connected with pressure oil circuit or oil return circuit by brake control valve；Controller, is connected with pressure sensor, velocity sensor and control for brake valve signal；The tach signal detected by the pressure signal and/or velocity sensor detected according to pressure sensor by controller controls the valve position of brake control valve.
Description
Technical field
The utility model is related to technical field of hydraulic pressure, more particularly, to a kind of engineering truck and its parking braking hydraulic pressure
System.
Background technology
Brake is provided with engineering truck such as loading machine from dynamic circuit breaker gear function, and Fig. 1 shows the work in known technology
The speed change box clutch of journey vehicle and service brake jointly control the schematic diagram of hydraulic system, and wherein speed change box clutch can also claim
For direction clutch, for engaging the input shaft of the output shaft and gearbox of engine or separating, the gearbox in Fig. 1 from
Clutch F, R is hydraulic direction clutch, and F is represented makes the forward clutch of vehicle forward, R represent make the retrogressing of vehicle rollback from
Clutch.Hydraulic the speed clutch A and B that can be also configured with some vehicles in Fig. 1, speed clutch A and B are used for providing
Different speed stages simultaneously simultaneously worked with forward clutch F and back clutch R in the way of in the of one by being selected, so that car
Can be advanced with the speed of A shelves or B shelves or be retreated.
Application has the engineering truck of the hydraulic system shown in Fig. 1 in normal driving process, and the fluid of hydraulic system is through pump
Banked direction control valves 92 is entered by pressure oil circuit P ' after 91 pressurizations, in when illustrating valve position, a part of pressure oil is through excessive for banked direction control valves 92
In the hydraulic cylinder of the path admission velocity clutch A in road valve 92, (now the hydraulic cylinder of speed clutch B is by banked direction control valves 92
Path communicate with oil return circuit T '), path of another part pressure oil in banked direction control valves 92 enters into pneumatic valve out of stock 93,
Pneumatic valve out of stock 93 is linked with the aerodynamic brake valve (not shown) of service braking system, when aerodynamic brake valve carrys out gas, pneumatic
Valve position of the valve out of stock 93 in diagram, above-mentioned another part pressure oil enter into advance by the path in pneumatic valve out of stock 93
In the hydraulic cylinder of clutch F (now the hydraulic cylinder of back clutch R by pneumatic valve out of stock 93, the path in banked direction control valves 92 with
Oil return circuit T ' is communicated) so that engineering truck is advanced with A notch speeds degree.
Above-mentioned engineering truck in the process of moving, if during using running brake (being commonly called as service brake) abrupt deceleration vehicle, gas
Dynamic brake valve is died, and the air pressure at the valve pneumatic out of stock 93 related to aerodynamic brake valve can be less than setting value, in pneumatic valve out of stock
Under spring effect in 93,93 switching valve position of pneumatic valve out of stock to block the pressure oil of direction clutch, now all directions clutch
The hydraulic cylinder of device is respectively by the path and oil return circuit T in pneumatic valve out of stock 93 " communicate, all directions clutch is out of stock to be made to start
Machine and gearbox are separated, now engineering truck in the presence of service braking system can stagnation of movement as early as possible, after vehicle lay-off,
Hand operating mechanism formula EPB (being commonly called as parking brake), prevents vehicle from moving.When engineering truck is again started up, hand is unclamped
Stop, make pneumatic valve out of stock 93 again switch to normal operation position by brake valve come gas, so that pressure oil being capable of approach axis
In the hydraulic cylinder of clutch.
Because there is delay the clutch hydraulic cylinder oil-filled time, for preventing car of sauntering on slope, current engineering truck is most to be arranged
Pattern on slope, when engineering truck enables pattern on slope, constantly keeps off during brake, that is, vehicle is on slope during pattern, even if make
Running brake abrupt deceleration vehicle, aerodynamic brake valve is used also not to die, direction clutch is not out of stock.Because on slope, the continuous gear of pattern causes
Shift time is short, gearshift efficiency high, and driver also likes operation under pattern on slope on non-ramp, when causing service brake from
Clutch and brake mutually compare power, cause clutch disc and the easy high temperature sintering abrasion of brake block, greatly have impact on clutch and stop
The service life of car.
Therefore, to those skilled in the art, needing offer one kind badly can effectively prevent car slipping from will not make clutch again
The brake system that power causes clutch disc and the abrasion of brake block high temperature sintering is mutually compared in device and brake.
Utility model content
The purpose of this utility model is to solve at least one of the above-mentioned problems in the prior art problem.
A kind of one side of the present utility model, there is provided the parking braking hydraulic system of engineering truck, engineering truck have
There are hydraulic direction clutch and the gearbox for exporting power, gearbox that there is power output shaft, including：Dynamic for braking
The hydraulic disk brake of power output shaft, disk brake are attached on engineering truck；For detecting the liquid of direction clutch
The pressure sensor of the pressure in cylinder pressure, pressure sensor are attached on the clutch of direction；For detecting turning for power output shaft
The velocity sensor of speed, velocity sensor are attached on gearbox；Brake control valve, is connected with the checking cylinder of disk brake
Oil circuit is optionally connected with pressure oil circuit or oil return circuit by brake control valve, so that disk brake locking or release are dynamic
Power output shaft；Controller, is connected with pressure sensor, velocity sensor and control for brake valve signal；Controller is passed according to pressure
The tach signal detected by the pressure signal and/or velocity sensor detected by sensor controls the valve position of brake control valve.
Further, pressure oil circuit is connected with the hydraulic power source of the Hydraulic Power Transmission System of gearbox.
Further, brake control valve is two-bit triplet solenoid directional control valve.
Further, disk brake is normally closed type disk brake.
Further, direction clutch includes forward clutch and the back clutch being arranged in engineering truck；Pressure
Sensor includes the advance pressure sensor being attached on forward clutch, and the retrogressing pressure being attached on back clutch is passed
Sensor.
Further, the parking braking hydraulic system also includes：Hydraulic accumulator, is arranged on pressure oil circuit and is located at system
The upstream of dynamic control valve.
Further, when pressure sensor detects pressure, to detect rotating speed less than pressure preset and velocity sensor little
When rotating speed preset value, controller control brake control valve makes the checking cylinder of disk brake pass through oil circuit in the first valve position
Connect with one of pressure oil circuit and oil return circuit, disk brake locks power output shaft；When pressure sensor is detected
Pressure be not less than pressure preset, or velocity sensor detect rotating speed not less than rotating speed preset value when, controller control system
Dynamic control valve makes the checking cylinder of disk brake by another in oil circuit and pressure oil circuit and oil return circuit in the second valve position
Person connects, and disk brake unclamps power output shaft.
When the parking braking hydraulic system applications of the engineering truck that the utility model is provided are to engineering truck, even if vehicle exists
Travel on slope, assist the speed change box clutch of engineering truck and service brake to jointly control liquid by making parking braking hydraulic system
Pressure system job, vehicle without select slope on pattern, by normally using the brake function out of stock of vehicle, you can be prevented effectively from
Vehicle car slipping on slope, can effectively prevent car slipping so as to provide one kind, and clutch and brake will not be made again mutually to compare power cause
Make the brake system of clutch disc and the abrasion of brake block high temperature sintering.
Other side of the present utility model, additionally provides a kind of engineering truck, and the engineering truck is provided with above-mentioned work
The parking braking hydraulic system of journey vehicle.
Further, engineering truck also has at least two hydraulic speed clutch.
Further, engineering truck is loading machine.
Description of the drawings
Embodiment of the present utility model is further described hereinafter with reference to accompanying drawing, in the accompanying drawings：
Fig. 1 shows that the speed change box clutch of the engineering truck of prior art and service brake jointly control hydraulic system
Schematic diagram；
Fig. 2 show the utility model embodiment provide engineering truck parking braking hydraulic system in disc type brake
The hydraulic schematic diagram of device, brake control valve and accumulator；
Fig. 3 show the utility model embodiment provide engineering truck parking braking hydraulic system in each sensor,
Controller and the control principle drawing of brake control valve；
Fig. 4 shows the parking braking hydraulic system of the engineering truck that the utility model embodiment is provided and gearbox clutch
Device and service brake jointly control the schematic diagram of hydraulic system.
Specific embodiment
Fig. 2 and Fig. 3 show the utility model preferred embodiment provide engineering truck parking braking hydraulic system (with
Lower abbreviation parking braking hydraulic system) schematic diagram.Fig. 4 illustrate the gearbox of the parking braking hydraulic system and engineering truck from
Clutch and service brake jointly control the schematic diagram of hydraulic system.
Hydraulic direction clutch and the gearbox (not shown) for exporting power, root is provided with engineering truck
Understand that direction clutch is alternatively referred to as speed change box clutch, for making output shaft and the speed change of vehicle motor according to known technology
The power input shaft engagement of case is separated.Direction clutch includes forward clutch and back clutch, and the F in Fig. 4 is represented
The forward clutch F of vehicle forward, R is made to represent the back clutch R for making vehicle rollback.When forward clutch F and retrogressing clutch
When one in device R is in engagement state, the power of engine output is ultimately transferred to car by the power output shaft of gearbox
Wheel.At least two hydraulic speed clutch can be also configured with some vehicles, the hydraulic speed clutch in the present embodiment
Device is two, is speed clutch A and speed clutch B respectively, and speed clutch A and B are used for providing different speed stages
And to select in the way of in the of one and in forward clutch F and back clutch R while working, to enable the vehicle to A shelves or B
The speed of shelves is advanced or is retreated.
In conjunction with referring to figs. 2 to Fig. 4, the parking braking hydraulic system that the present embodiment is provided at least includes：Hydraulic disc type system
Dynamic device 1, pressure sensor 41, velocity sensor 42, brake control valve 2 and controller 3.
EPB adopts hydraulic disk brake 1, the disk brake 1 be automatically controlled by hydraulic system,
The manual control machine tool formula EPB employed in current engineering truck can be replaced.Disk brake 1 is attached to work
Correct position in journey vehicle the power output shaft for braking gearbox, are realized by locking the power output shaft of gearbox
Parking braking to car load, by unclamping the power output shaft of gearbox releasing the parking braking to car load.Art technology
Personnel understand that with reference to known technology disk brake 1 generally has checking cylinder, brake piston, brake pad, brake disc, reset bullet
The structures such as spring, brake pad are fixed on brake piston, it will be understood that brake disc can be coaxially connected with power output shaft, braking
The movement of piston is promoted or promoted by the pressure oil entered in checking cylinder by back-moving spring, and then, rub when brake piston drives
When cleaning block is moved against on the disc brake rotor, 1 locking power output shaft of disk brake；When brake piston drives brake pad and system
When Moving plate is separated, disk brake 1 unclamps power output shaft.
Pressure sensor 41 is used for detecting that the pressure in the hydraulic cylinder of direction clutch, pressure sensor 41 are attached to direction
On clutch.The pressure signal for detecting can be sent to controller 3 by pressure sensor 41.It is appreciated that pressure sensor
41 can be arranged on only in forward clutch F and back clutch R, to detect forward clutch F and retreat clutch
Pressure in device R in the hydraulic cylinder of a direction clutch.Preferably, in the present embodiment, pressure sensor 41 can include peace
The advance pressure sensor 411 being filled on forward clutch F, to detect that the pressure in the hydraulic cylinder of forward clutch F, pressure are passed
Sensor 41 also includes the retrogressing pressure sensor 412 being attached on back clutch R, to detect the hydraulic cylinder of back clutch R
Interior pressure.The concrete installation site of each pressure sensor can as needed and pressure sensor type set, here
Repeat no more.
Velocity sensor 42 is attached on gearbox, for detecting the rotating speed of the power output shaft of gearbox.Velocity pick-up
The tach signal of the power output shaft for detecting can be sent to controller 3 by device 42.The concrete installation position of velocity sensor 42
Put can as needed and velocity sensor type set, will not be described here.
The oil circuit 11 being connected with the checking cylinder of disk brake 1 by brake control valve 2 optionally with pressure oil circuit P or
Oil return circuit T is connected, that is, by the valve position for switching brake control valve 2, can make oil circuit 11 with pressure oil circuit P and oil return oil
One of road T is connected.When oil circuit 11 is connected with pressure oil circuit P, now pressure oil is injected into the checking cylinder of disk brake 1
Interior, promote brake piston to overcome action of reset spring power to move；When oil circuit 11 is connected with oil return circuit T, now disc type brake
The brake piston of device 1 return under action of reset spring, promotes the fluid in checking cylinder to return to by oil circuit 11, oil return circuit T
In fuel tank, so as to realize that disk brake 1 is locked or unclamps power output shaft.
Controller 3 is connected with pressure sensor 41, velocity sensor 42 and 2 signal of brake control valve.Controller 3 is according to pressure
The tach signal control brake control valve 2 detected by the pressure signal and/or velocity sensor 42 detected by force snesor 41
Valve position.
Specifically, can with low pressure limit value (i.e. pressure preset) P0 of direction initialization clutch hydraulic cylinder, when direction from
When pressure P1 in clutch hydraulic cylinder is less than P0, it is believed that the direction clutch in engagement needs out of stock；Set transmission power defeated
Lower rotation speed limit value (the i.e. rotating speed preset value) N0 of shaft, when the rotating speed N1 of transmission power output shaft is less than N0, it is believed that car stops
Need parking.Further, when pressure sensor 41 detects pressure P1 less than P0, and velocity sensor 42 detects rotating speed N1 and is less than
During N0, the control brake control valve 2 of controller 3 is switched to the first valve position, makes the checking cylinder of disk brake 1 by oil circuit 11 and pressure
One of power oil circuit P and oil return circuit T are connected, and brake piston drives brake pad against on the disc brake rotor, and disk brake 1 is locked
The power output shaft of tight gearbox, realizes parking braking.It is appreciated that when normal vehicle operation, in direction clutch F and R
One of pressure be not less than N0, the pressure of another one is less than N0.When the pressure of both direction clutch F and R is respectively less than N0 and change
When the rotating speed of fast case power output shaft is less than N0, the parked vehicle automatically of disk brake 1.
When above-mentioned condition is unsatisfactory for, disk brake 1 is then automatically terminated to the parked of vehicle.Specifically, when pressure is passed
Sensor 41 detects pressure P1 not less than (more than or equal to) P0, or velocity sensor 42 detects rotating speed N1 not less than (big
In or be equal to) N0 when, controller 3 control brake control valve 2 be switched to or maintain the second valve position, make the system of disk brake 1
Dynamic cylinder is connected with the other of pressure oil circuit P and oil return circuit T by oil circuit 11, and brake piston drives brake pad and brake disc
It is separated, disk brake 1 unclamps the power output shaft of gearbox, releases the parking braking to vehicle, vehicle can be travelled.Need
It is noted that the concrete numerical value of P0 and N0 can determine according to experiment that the P0 and N0 corresponding to different size and vehicle can be with
Differ.
With reference to Fig. 4 to be provided with the parking braking hydraulic system engineering truck traveling and parking process say
Bright.In vehicle travel process, when being braked using running brake or during vehicle power-off, associated with running brake pneumatic is stopped
Car valve 93 is died and switching valve position, makes the hydraulic cylinder and oil return circuit T of all directions clutch " and T ' communicate, change in brake process
The rotating speed of fast case power output shaft also synchronously reduces, when pressure P1 is less than N0 less than P0 and rotating speed N1, now direction clutch
Out of stock and stopped and need parking, controller 3 sends instruction so that autocontrol valve 2 is switched to first to autocontrol valve 2
Valve position so that the parked vehicle automatically of disk brake 1.Now as direction clutch is out of stock, running brake is not resulted in
Power is mutually compared with direction clutch, it is to avoid the high temperature sintering abrasion of clutch disc and brake block.
When needing to start vehicle, start brake valve 93 gas switching valve position, make the hydraulic cylinder of a direction clutch with
Pressure oil circuit P ' is communicated, when the pressure P1 of a direction clutch (now thinks that direction clutch has been located not less than P0
In bonding station), controller 3 sends instruction so that autocontrol valve 2 is switched to the second valve position to autocontrol valve 2 so that disk
Formula brake 1 is released to the parked of vehicle, so as to prevent car slipping.In addition, the direction clutch in vehicle travel process is changed
Between the working days, the pressure P1 of all directions clutch may be respectively less than P0, but the rotating speed N1 of power output shaft is not less than N0, controller 3
Instruction is sent to autocontrol valve 2, is made autocontrol valve 2 maintain the second valve position, disk brake 1 is still released to vehicle
Parked, undesirable parked to avoid vehicle from occurring.
Preferably, disk brake 1 can be normally closed type disk brake, that is, the checking cylinder of disk brake 1 with return
When oil circuit T is connected, brake piston drives brake pad in the presence of back-moving spring against on the disc brake rotor, disk brake 1
Locking speed changing box power output shaft, car load are parked；When checking cylinder is connected with pressure oil circuit P, brake piston drives brake pad in pressure
Action of reset spring power is overcome to leave brake disc in the presence of power oil, disk brake 1 unclamps speed changing box power output shaft, releases
Parking braking.
Preferably, brake control valve 2 can be two-bit triplet solenoid directional control valve, when brake control valve 2 is in a kind of valve position
When (valve position as shown in Figure 2), oil circuit 11 is connected with pressure oil circuit P；When brake control valve is in another kind of valve position, oil circuit 11
Connect with oil return circuit T.Preferably, brake control valve 2 is normally closed type solenoid directional control valve, when disk brake 1 is normally closed type disk
During formula brake, in the state of no power, oil circuit 11 is connected with oil return circuit T, the parked vehicle automatically of disk brake 1.
Preferably, pressure oil circuit P can be connected with the hydraulic power source of the Hydraulic Power Transmission System of gearbox so that disk brake
1 checking cylinder can be further ensured that response speed by apart near gear box hydraulic transmission system supply pressure fluid, it is to avoid
Car slipping.Furthermore it is also possible to arrange filling type hydraulic accumulator 5, the oily booster in oil top etc. to expire in parking braking hydraulic system
The speed of sufficient parking oil charging-discharging and pressure requirements.As illustrated, hydraulic accumulator 5 can be arranged on pressure oil circuit P and be located at
The upstream of brake control valve 2.
The utility model embodiment additionally provides a kind of engineering truck, and the engineering truck is provided with above-mentioned engineering truck
Parking braking hydraulic system.The engineering truck is, for example, loading machine, it will be understood to those skilled in the art that this can be applied to stay
The engineering truck of car hydraulic braking system is not limited to loading machine.
Industrial applicibility
Even if the vehicle that application has the parking braking hydraulic system of the utility model embodiment offer is travelled on slope, pass through
Parking braking hydraulic system is made to assist the speed change box clutch of engineering truck and service brake to jointly control hydraulic system operation, car
Without selecting pattern on slope, can be prevented effectively from vehicle and slip on slope by the brake function out of stock normally using vehicle
Car, it is to avoid using the problems of pattern on slope, can effectively prevent car slipping from will not make clutch again so as to provide one kind
The brake system that power causes clutch disc and the abrasion of brake block high temperature sintering is mutually compared in device and brake.It is appreciated that staying with this
Pattern on slope can further be cancelled by the engineering truck of car hydraulic braking system, to simplify complete vehicle structure and cost.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, to this area
For technical staff, multiple changing can be made to device of the present utility model in the case of without departing from scope of the present utility model
Good and modification.Those skilled in the art is also obtained other embodiments by considering the content disclosed in this specification.This theory
Bright book and example should be considered only as exemplary, and true scope of the present utility model is limited by claims and equivalent
Fixed.
Claims (10)
1. the parking braking hydraulic system of a kind of engineering truck, the engineering truck have hydraulic direction clutch and for defeated
Go out the gearbox of power, the gearbox has power output shaft, it is characterised in that include：
For braking the hydraulic disk brake (1) of the power output shaft, disk brake (1) is attached to the work
On journey vehicle；
For detecting the pressure sensor (41) of the pressure in the hydraulic cylinder of the direction clutch, pressure sensor (41)
It is attached on the direction clutch；
For detecting that the velocity sensor (42) of the rotating speed of the power output shaft, velocity sensor (42) are attached to described
On gearbox；
Brake control valve (2), the oil circuit (11) being connected with the checking cylinder of the disk brake (1) pass through the brake control valve
(2) optionally connect with pressure oil circuit (P) or oil return circuit (T), so that the disk brake (1) locking or release are described
Power output shaft；
Controller (3), is connected with the pressure sensor (41), velocity sensor (42) and brake control valve (2) signal；Described
The pressure signal and/or the velocity sensor (42) detected according to the pressure sensor (41) by controller (3) is detected
Tach signal control brake control valve (2) valve position.
2. parking braking hydraulic system according to claim 1, it is characterised in that pressure oil circuit (P) and the change
The hydraulic power source connection of the Hydraulic Power Transmission System of fast case.
3. parking braking hydraulic system according to claim 1, it is characterised in that described brake control valve (2) are two
Three-way solenoid valve.
4. parking braking hydraulic system according to claim 1, it is characterised in that described disk brake (1) is normally closed
Formula disk brake.
5. parking braking hydraulic system according to claim 1, it is characterised in that the direction clutch includes being arranged at
Forward clutch (F) and back clutch (R) in the engineering truck；Described pressure sensor (41) are described including being attached to
Advance pressure sensor (411) on forward clutch, and the retrogressing pressure sensor being attached on the back clutch
(412).
6. parking braking hydraulic system according to any one of claim 1 to 5, it is characterised in that also include：Hydraulic pressure stores
Energy device (5), is arranged on pressure oil circuit (P) above and is located at the upstream of the brake control valve (2).
7. parking braking hydraulic system according to any one of claim 1 to 5, it is characterised in that
When the pressure sensor (41) is detected, the pressure is less than pressure preset and the velocity sensor (42) is detected
When being less than rotating speed preset value to the rotating speed, described controller (3) control described brake control valve (2) in the first valve position, make
The checking cylinder of disk brake (1) is by the oil circuit (11) and pressure oil circuit (P) and the oil return circuit (T)
One of connection, described disk brake (1) locks the power output shaft；
When the pressure sensor (41) detects the pressure not less than the pressure preset, or the velocity sensor
(42), when detecting the rotating speed not less than the rotating speed preset value, described controller (3) control brake control valve (2) place
In the second valve position, make the checking cylinder of the disk brake (1) by the oil circuit (11) with pressure oil circuit (P) and described
The other of oil return circuit (T) is connected, and described disk brake (1) unclamps the power output shaft.
8. a kind of engineering truck, it is characterised in that the parking of the engineering truck being provided with any one of claim 1 to 7
Hydraulic braking system.
9. engineering truck according to claim 8, it is characterised in that the engineering truck also has at least two hydraulics
Speed clutch.
10. engineering truck according to claim 8 or claim 9, it is characterised in that the engineering truck is loading machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621031629.3U CN206012579U (en) | 2016-08-31 | 2016-08-31 | Engineering truck and its parking braking hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621031629.3U CN206012579U (en) | 2016-08-31 | 2016-08-31 | Engineering truck and its parking braking hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206012579U true CN206012579U (en) | 2017-03-15 |
Family
ID=58259421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621031629.3U Active CN206012579U (en) | 2016-08-31 | 2016-08-31 | Engineering truck and its parking braking hydraulic system |
Country Status (1)
| Country | Link |
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| CN (1) | CN206012579U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730507A (en) * | 2018-08-26 | 2018-11-02 | 刘剑 | The gear locking device of vehicle |
| CN109562753A (en) * | 2017-03-30 | 2019-04-02 | 日立建机株式会社 | The braking method of Work machine and Work machine |
| CN109835321A (en) * | 2017-11-28 | 2019-06-04 | 中冶宝钢技术服务有限公司 | Crawler-type loader hydraulic parking braking release method |
| CN113954799A (en) * | 2021-11-11 | 2022-01-21 | 郑州宇通重工有限公司 | Wheel type engineering equipment |
| CN118529131A (en) * | 2024-07-26 | 2024-08-23 | 江苏常矿工程机械有限公司 | Integrated hydraulic system of unmanned pure electric mining dump truck |
-
2016
- 2016-08-31 CN CN201621031629.3U patent/CN206012579U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109562753A (en) * | 2017-03-30 | 2019-04-02 | 日立建机株式会社 | The braking method of Work machine and Work machine |
| CN109562753B (en) * | 2017-03-30 | 2021-03-16 | 日立建机株式会社 | Working machine and method for braking working machine |
| CN109835321A (en) * | 2017-11-28 | 2019-06-04 | 中冶宝钢技术服务有限公司 | Crawler-type loader hydraulic parking braking release method |
| CN108730507A (en) * | 2018-08-26 | 2018-11-02 | 刘剑 | The gear locking device of vehicle |
| CN108730507B (en) * | 2018-08-26 | 2019-12-17 | 刘剑 | Gear locking device of vehicle |
| CN110657233A (en) * | 2018-08-26 | 2020-01-07 | 吴红平 | Working method of vehicle |
| CN110671494A (en) * | 2018-08-26 | 2020-01-10 | 吴红平 | Gear locking device of vehicle and working method thereof |
| CN113954799A (en) * | 2021-11-11 | 2022-01-21 | 郑州宇通重工有限公司 | Wheel type engineering equipment |
| CN118529131A (en) * | 2024-07-26 | 2024-08-23 | 江苏常矿工程机械有限公司 | Integrated hydraulic system of unmanned pure electric mining dump truck |
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