CN214565275U - Automatic braking system for hydraulic braking wet bridge - Google Patents
Automatic braking system for hydraulic braking wet bridge Download PDFInfo
- Publication number
- CN214565275U CN214565275U CN202120702985.8U CN202120702985U CN214565275U CN 214565275 U CN214565275 U CN 214565275U CN 202120702985 U CN202120702985 U CN 202120702985U CN 214565275 U CN214565275 U CN 214565275U
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- braking
- brake
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- wet
- hydraulic
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- 239000010720 hydraulic oil Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 18
- 239000003921 oil Substances 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 6
- 239000010985 leather Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000004146 energy storage Methods 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The utility model discloses an automatic braking system for hydraulic braking wet-type bridge relates to the hydraulic braking field, the utility model has the advantages of reasonable design, can be applied to trackless rubber tyer equipment such as underground scraper, fortune ore truck, drill jumbo, personnel's haulage vehicle, parking and emergency braking, the transmission shaft is blocked, vehicle sensor signals for the solenoid valve simultaneously, the solenoid valve is automatic to be electrified to commutate, pressure oil of energy storage ware passes through relief pressure valve and solenoid valve after, automatically to the stopper, make stopper and wheel braking, carry out transmission shaft braking and stopper braking simultaneously, provide the braking security; the braking reliability is improved through the automatic braking function of the vehicle.
Description
Technical Field
The utility model belongs to the technical field of hydraulic braking and specifically relates to an automatic braking system for hydraulic braking wet-type axle is related to.
Background
At present, wet brakes are required to be used by underground trackless rubber wheel equipment of mines, and for the wet brakes released by hydraulic brake springs, a brake pedal needs to be stepped to enable pressure oil to enter the brakes for braking; when parking braking and emergency braking are carried out, the transmission shaft from the gearbox to the front axle or the rear axle is clamped by controlling the electromagnetic valve or the mechanical handle, so that the wheels are braked. The above braking system has the following disadvantages: in the parking brake and the emergency brake of the existing system, a transmission shaft is clamped to brake wheels through gears inside a bridge, so that the gears are easily abraded to cause brake failure; parking braking and emergency braking require manual control, and the operation of personnel has a response delay, so that the braking is slow.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an automatic braking system for hydraulic braking wet-type axle.
The technical problem of the utility model is realized through following technical scheme: an automatic braking system for a hydraulic braking wet-type axle comprises a hydraulic oil tank, a brake pump, a filter, a safety valve, a liquid charging valve, an energy accumulator, a brake pedal, a drive axle, a wet-type hydraulic brake, a parking brake, a pressure reducing valve and an electromagnetic valve; the method is characterized in that: the energy accumulator is connected with the brake pedal; the output port of the brake pedal is connected to a wet hydraulic brake of a drive axle; a pressure reducing valve and an electromagnetic valve are connected between the energy accumulator and the drive axle in parallel; the hydraulic oil tank and the brake pump are connected with a liquid charging valve through a filter, the liquid charging valve is a double-loop liquid charging valve, one end behind the liquid charging valve is connected with an energy accumulator, and the other end of the liquid charging valve controls parking braking.
Further, two oil paths are connected in parallel between the energy accumulator and the drive axle: one is formed by connecting a first pressure reducing valve and a first electromagnetic valve in series; the other one is formed by connecting a second reducing valve and a second electromagnetic valve in series.
Further, according to the state of the vehicle, the vehicle control system inputs signals to the electromagnetic valve, and the pressure of the energy accumulator is automatically applied to the drive axle brake, so that the drive axle is automatically braked.
Further, the sensor signals received by the solenoid valve brake are respectively from: parking indicating sensor, cable winding limit sensor or hydraulic oil temperature sensor.
Further, the parking indication sensor is located in a cab control panel; the cable winding limit sensor is positioned on the parking place reel; the hydraulic oil temperature sensor is positioned at the bottom of the hydraulic oil tank.
Further, the accumulator is of a bellows type, and the volume of the single accumulator is 2.5L.
To sum up, the utility model discloses following beneficial effect has:
compared with the prior art, the utility model has reasonable structural design, can be applied to trackless rubber-tyred equipment such as underground scraper, ore-transporting truck, drill jumbo, personnel transport vehicle and the like, and can be used for parking and emergency braking, and simultaneously carry out transmission shaft braking and brake braking, thereby providing braking safety; the braking reliability is improved through the automatic braking function of the vehicle.
Drawings
FIG. 1 is a flow chart of the system of the present invention;
FIG. 2 is a flow chart of a foot brake control;
FIG. 3 is a flow chart of the automatic control of the solenoid valve.
Description of reference numerals: the brake system comprises a hydraulic oil tank 1, a brake pump 2, a filter 3, a safety valve 4, a liquid charging valve 5, an accumulator 6, a brake pedal 7, a first pressure reducing valve 801, a second pressure reducing valve 802, a first electromagnetic valve 901, a second electromagnetic valve 902, a drive axle 10, a wet hydraulic brake 11 and a parking brake 12.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model discloses an automatic braking system for hydraulic braking wet-type bridge. Referring to fig. 1 to 3, an automatic brake system for a hydraulic brake wet axle includes a hydraulic oil tank 1, a brake pump 2, a filter 3, a safety valve 4, a charge valve 5, an accumulator 6, a brake pedal 7, a transaxle 10, a wet hydraulic brake 11, a parking brake 12, a pressure reducing valve, and an electromagnetic valve; the energy accumulators 6 are of a leather bag type, and the volume of each energy accumulator 6 is 2.5L; the energy accumulator 6 is connected with a brake pedal 7; the output port of the brake pedal 7 is connected to a wet hydraulic brake 11 of a drive axle 10; and a pressure reducing valve and an electromagnetic valve are connected in parallel between the accumulator 6 and the drive axle 10.
The electromagnetic valve is automatically controlled by a control signal, manual operation is not needed, and the vehicle controller automatically outputs an instruction to the electromagnetic valve according to a signal collected by a vehicle sensor.
The pressure of the energy accumulator 6 is reduced to the pressure which can be borne by the wet hydraulic brake 11 through the pressure reducing valve, the pressure of the energy accumulator is generally between 120 and 150bar, the pressure reducing valve reduces the pressure to 100bar, the electromagnetic valve is automatically electrified, the pressure of the energy accumulator 6 is enabled to be applied to the wet hydraulic brake 11, and the drive axle 10 is automatically braked.
During normal operation, the accumulator 6 goes to the brake pedal 7 and then to the solenoid valve and the wet hydraulic brake 11. During automatic braking, the oil path does not pass through the brake pedal 7, the brake is controlled by the oil path through a pressure reducing valve and an electromagnetic valve, and the pressure of the energy accumulator 6 is reduced by the pressure reducing valve and then enters the wet hydraulic brake 11. The brake pedal 7 has a pressure reducing function itself, and does not need a pressure reducing valve for regulation. The relief valve functions to prevent the accumulator 6 from being excessively pressurized to the wet hydraulic brake 11.
Two oil paths are connected in parallel between the energy accumulator 6 and the drive axle 10: one is formed by connecting a first reducing valve 801 and a first electromagnetic valve 901 in series; the other is formed by connecting a second pressure reducing valve 802 and a second electromagnetic valve 902 in series.
The hydraulic oil tank 1 and the brake pump 2 are connected with a liquid charging valve 5 through a filter 3, the liquid charging valve is a double-loop liquid charging valve, one end of the rear part of the liquid charging valve 5 is connected with an energy accumulator 6, and the other end of the rear part of the liquid charging valve controls parking brake 12. The hydraulic oil tank 1 and the brake pump 2 provide a power oil source for the system; the filter 3 filters hydraulic oil, removes impurities, and provides a precision safety valve to prevent the system pressure from being too high.
According to the state of the vehicle, the vehicle control system inputs signals to the electromagnetic valve, the pressure of the energy accumulator 6 is automatically applied to the wet hydraulic brake 11, and the drive axle 10 is automatically braked.
The sensor signals received by the electromagnetic valve brake are respectively from: a parking indication sensor, a cable winding limit sensor or a hydraulic oil temperature sensor; the parking indication sensor is positioned in a cab control panel; the cable winding limit sensor is positioned on the parking place reel; the hydraulic oil temperature sensor is positioned at the bottom of the hydraulic oil tank 1.
The parking brake 5 and the emergency brake are used for clamping a transmission shaft, meanwhile, pressure oil of the energy accumulator 6 also enters the wet hydraulic brake 11, and wheels are braked through brake friction plates; automatic brake control is added.
The utility model discloses a theory of operation does:
1. when the vehicle is not performing a braking operation: the electromagnetic valve is in a power-off state, the brake pedal is in a closed state, and the energy accumulator is in a pressure maintaining state.
2. When the vehicle is normally braked: the electromagnetic valve is in a power-off state, a driver steps on the brake pedal, pressure oil of the energy accumulator enters the brake through the brake pedal, and the dynamic and static friction plates in the brake are attached to brake the brake and the wheels.
3. Parking and emergency braking: the parking button or the parking pull rod of the vehicle is operated, the transmission shaft is clamped, meanwhile, the vehicle sensor sends signals to the electromagnetic valve, the electromagnetic valve is automatically electrified and reversed, and pressure oil of the energy accumulator passes through the pressure reducing valve and the electromagnetic valve and then automatically reaches the brake, so that the brake and the wheels are braked.
4. As shown in the figure, the electromagnetic valve can also receive other signals of the vehicle to automatically brake.
Above do the preferred embodiment of the present invention, not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (6)
1. An automatic braking system for a hydraulic braking wet axle comprises a hydraulic oil tank (1), a brake pump (2), a filter (3), a safety valve (4), a liquid charging valve (5), an energy accumulator (6), a brake pedal (7), a drive axle (10), a wet hydraulic brake (11), a parking brake (12), a pressure reducing valve and an electromagnetic valve; the method is characterized in that: the energy accumulator (6) is connected with the brake pedal (7); the output port of the brake pedal (7) is connected to a wet hydraulic brake (11) of a drive axle (10); a pressure reducing valve and an electromagnetic valve are connected in parallel between the energy accumulator (6) and the drive axle (10); the hydraulic oil tank (1) and the brake pump (2) are connected with a liquid charging valve (5) through a filter (3), the liquid charging valve is a double-loop liquid charging valve, one end of the rear portion of the liquid charging valve (5) is connected with an energy accumulator (6), and the other end of the rear portion of the liquid charging valve controls parking braking (12).
2. An automatic braking system for a hydraulically braking wet axle according to claim 1, characterized in that: two oil paths are connected in parallel between the energy accumulator (6) and the drive axle (10): one is formed by connecting a first reducing valve (801) and a first electromagnetic valve (901) in series; the other is formed by connecting a second reducing valve (802) and a second electromagnetic valve (902) in series.
3. An automatic braking system for a hydraulically braking wet axle according to claim 1, characterized in that: according to the state of the vehicle, the vehicle control system inputs signals to the electromagnetic valve, and the pressure of the energy accumulator is automatically applied to the drive axle brake, so that the drive axle is automatically braked.
4. The automatic braking system for a hydraulically braking wet axle of claim 1, characterized in that: the sensor signals received by the electromagnetic valve brake are respectively from: parking indicating sensor, cable winding limit sensor or hydraulic oil temperature sensor.
5. The automatic braking system for a hydraulically braking wet axle of claim 4, characterized in that: the parking indication sensor is positioned in a cab control panel; the cable winding limit sensor is positioned on the parking place reel; the hydraulic oil temperature sensor is positioned at the bottom of the hydraulic oil tank (1).
6. The automatic braking system for a hydraulically braking wet axle of claim 1, characterized in that: the energy accumulators (6) are of a leather bag type, and the volume of each energy accumulator (6) is 2.5L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120702985.8U CN214565275U (en) | 2021-04-07 | 2021-04-07 | Automatic braking system for hydraulic braking wet bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120702985.8U CN214565275U (en) | 2021-04-07 | 2021-04-07 | Automatic braking system for hydraulic braking wet bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214565275U true CN214565275U (en) | 2021-11-02 |
Family
ID=78323570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120702985.8U Active CN214565275U (en) | 2021-04-07 | 2021-04-07 | Automatic braking system for hydraulic braking wet bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214565275U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114872672A (en) * | 2022-05-10 | 2022-08-09 | 内蒙古北方重型汽车股份有限公司 | Brake device and brake method for unmanned mining dump truck |
-
2021
- 2021-04-07 CN CN202120702985.8U patent/CN214565275U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114872672A (en) * | 2022-05-10 | 2022-08-09 | 内蒙古北方重型汽车股份有限公司 | Brake device and brake method for unmanned mining dump truck |
| CN114872672B (en) * | 2022-05-10 | 2023-02-24 | 内蒙古北方重型汽车股份有限公司 | Brake device and brake method for unmanned mining dump truck |
| WO2023216746A1 (en) * | 2022-05-10 | 2023-11-16 | 内蒙古北方重型汽车股份有限公司 | Braking apparatus for unmanned mining dump truck and braking method therefor |
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