CN215333696U - Stable braking pressure compensating system - Google Patents
Stable braking pressure compensating system Download PDFInfo
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- CN215333696U CN215333696U CN202120686841.8U CN202120686841U CN215333696U CN 215333696 U CN215333696 U CN 215333696U CN 202120686841 U CN202120686841 U CN 202120686841U CN 215333696 U CN215333696 U CN 215333696U
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- oil way
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- 238000011010 flushing procedure Methods 0.000 claims description 16
- 230000001502 supplementing effect Effects 0.000 claims description 11
- 230000000694 effects Effects 0.000 abstract description 4
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 199
- 239000010720 hydraulic oil Substances 0.000 description 43
- 230000000087 stabilizing effect Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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Abstract
The utility model relates to a stable braking pressure compensating system relates to underground mine car braking system's technical field, it includes the oil tank, the main oil circuit, the braking oil circuit, the rotation oil circuit, main oil circuit one end and oil tank intercommunication, the main oil circuit intercommunication has the gear pump, the main oil circuit still communicates there is monostable flow divider, monostable flow divider oil-out one end and rotation oil circuit intercommunication, monostable flow divider oil-out other end and braking oil circuit intercommunication, the rotation oil circuit intercommunication has the power steering ware that realizes underground mine car steering function, the end and the oil tank intercommunication of rotation oil circuit, this application has carries out the pressure compensating for braking system, and then improves underground mine car job stabilization's effect.
Description
Technical Field
The application relates to the technical field of underground mine car braking systems, in particular to a stable braking and pressure supplementing system.
Background
The underground mine car is also called tunnel car, it is a special self-dumping truck developed for adapting to transporting material in underground tunnel, and the body form and performance of tunnel car are different from those of general self-dumping truck.
In the related technology, the underground mine car generally realizes the self-discharging function by virtue of a self-lifting system, and generally adopts a double-pump oil supply system, so that a brake oil pump and a lifting oil pump in the lifting system are used in the same oil way, and the lifting, self-discharging and braking of the underground mine car are realized through one control oil way.
In view of the above-mentioned related technologies, the inventor thinks that there is a defect that a lift pump and a brake oil pump are used in the same oil circuit, and when the lift pump works and a driver engages in a gear and steps on a clutch again, the gear pump is stopped by stealing due to the reduction of oil pressure, so that a brake system of an underground mine car cannot be used normally.
SUMMERY OF THE UTILITY MODEL
In order to improve when lifting pump during operation, the driver put into gear again and step on the separation and reunion, the gear pump can be because of the oil pressure reduces and steal the stop, and then makes the unable normal use's of underground mine car braking system defect, this application provides a stable braking pressure compensating system.
The application provides a stable braking pressure compensating system adopts following technical scheme:
a stable braking pressure compensating system comprises an oil tank, a main oil way, a braking oil way and a rotating oil way, wherein one end of the main oil way is communicated with the oil tank, the main oil way is communicated with a gear pump, the main oil way is also communicated with a monostable shunt valve, one end of an oil outlet of the monostable shunt valve is communicated with the rotating oil way, the other end of the oil outlet of the monostable shunt valve is communicated with the braking oil way, the rotating oil way is communicated with a power steering gear for realizing the steering function of an underground mine car, and the tail end of the rotating oil way is communicated with the oil tank.
By adopting the technical scheme, the connection mode of the oil way effectively separates the braking oil way from the lifting oil way, and after the gear pump provides the hydraulic oil of the oil tank to the main oil way, the hydraulic oil is distributed to the rotating oil way and the braking oil way according to a certain proportion through the monostable flow divider valve, and the rotating oil way provides the power steering gear of the hydraulic oil tank, so that the rotation of the vehicle is realized; the hydraulic oil flowing to the brake oil way is used for pressurizing the brake oil way, so that the normal operation of the brake oil way is ensured, the situation that the brake oil way cannot normally work due to too low oil pressure of the brake oil way when the lifting pump works is reduced, and the working stability of the underground mine car is improved.
Optionally, a control oil port of the monostable shunt valve is communicated with the rotary oil path.
Through adopting above-mentioned technical scheme, monostable flow divider can provide more hydraulic oil for turning to the oil circuit through controlling the hydraulic fluid port, can also control the size that provides the oil circuit simultaneously, and then has guaranteed to turn to and has carried out the pressure compensating for the braking oil circuit under the normal circumstances.
Optionally, the oil drain port of the monostable flow divider is communicated with an overflow valve, and the oil outlet of the overflow valve is communicated with the oil tank.
Through adopting above-mentioned technical scheme, when the hydraulic oil pressure that provides the monostable flow divider through the gear pump was too big, unnecessary hydraulic oil passed through the overflow valve and flows to the oil tank, and effectual main oil circuit is protected, has improved the service function life of pressure compensating system.
Optionally, the main oil path is communicated with a middle filter.
By adopting the technical scheme, the middle section filter effectively filters the hydraulic oil in the main oil way, so that the service life of each part element in the pressure supplementing system is prolonged.
Optionally, the middle section filter is communicated between the power pump and the monostable shunt valve.
Through adopting above-mentioned technical scheme, the effectual hydraulic oil to the monostable flow divider that flows into of middle section filter filters, and then has improved the life of monostable flow divider.
Optionally, the brake oil path is communicated with a flushing valve, and oil drain ports of the flushing valve are communicated with the oil tank.
By adopting the technical scheme, the liquid flushing valve effectively reduces the probability of backflow of hydraulic oil in the brake oil way, so that the stability of the oil pressure in a brake system is improved, and meanwhile, when the amount of hydraulic oil in the brake oil way is too much, redundant hydraulic oil flows into an oil tank through an oil drainage port of the liquid flushing valve, so that the protection effect on the brake oil way is improved, the brake oil way can normally work, and the working stability of an underground mine car is improved.
Optionally, the brake oil path is further communicated with an energy accumulator, and the energy accumulator is located at a position where the flushing valve is far away from the main oil path.
By adopting the technical scheme, on the basis of the limit of the flushing valve on the oil return of the brake oil way, the energy accumulator effectively plays a balance role in the oil pressure of the brake oil way, and the working stability of the brake oil way is further improved.
Optionally, the accumulator is provided in plurality on the brake oil path.
By adopting the technical scheme, the number of the energy accumulators is set, the load of a single energy accumulator is effectively reduced, and the service life of the energy accumulator is prolonged.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the gear pump brings hydraulic oil in the oil tank into the main oil way, the hydraulic oil flows to the rotating oil way and the braking oil way according to a certain proportion after passing through the monostable shunt valve, pressure compensation is carried out on the braking oil way under the condition that the oil pressure of the rotating oil way is normal, the braking oil way is separated from the lifting oil way, the condition that the braking oil way cannot normally work due to low oil pressure when the lifting pump works is reduced, and the working stability of the underground mine car is improved;
2. when the flow of the hydraulic oil flowing to the monostable flow divider valve is larger than the oil amount of the branch rotating oil path and the brake oil path, redundant hydraulic oil flows to the oil tank through the overflow valve, the pressure borne by the monostable flow divider valve is effectively reduced, and the service life of the monostable flow divider valve is prolonged;
3. the monostable flow divider valve can control the flow of the hydraulic oil flowing to the rotating oil way through the control oil port, so that the normal supply of the hydraulic oil in the steering oil way is effectively ensured, and the guarantee is provided for the normal work of the rotating oil way.
Drawings
FIG. 1 is a schematic diagram of a connection according to an embodiment of the present application;
FIG. 2 is a schematic diagram showing the connection of the stabilizing assembly and the braking assembly.
In the figure, 1, a fuel tank; 2. a main oil path; 21. a gear pump; 22. a primary filter; 23. a middle section filter; 24. a monostable shunt valve; 241. an overflow valve; 3. rotating the oil circuit; 31. a power steering gear; 4. a brake oil path; 5. a stabilizing assembly; 51. a flushing valve; 52. an accumulator; 6. a brake assembly; 61. a parking brake valve; 62. a service brake valve; 63. and a brake.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses stable braking pressure supplementing system.
Referring to fig. 1, the stable braking pressure compensating system comprises an oil tank 1, a main oil path 2, a rotating oil path 3 and a braking oil path 4, wherein the main oil path 2 is communicated with the oil tank 1, a gear pump 21 is communicated with a part of the main oil path 2, which is close to the oil tank 1, a monostable flow divider valve 24 which distributes hydraulic oil of the main oil path to the rotating oil path 3 and the braking oil path 4 according to a certain proportion is arranged between the main oil path 2, the rotating oil path 3 and the braking oil path 4, the rotating oil path 3 is communicated with a power steering gear 31 which is used for controlling the rotation of a vehicle, the braking oil path 4 is provided with a braking component 6 which controls the braking of the vehicle, and the rotating oil path 3 is further provided with a stabilizing component 5 which improves the stability of the braking oil path 4.
The gear pump 21 transports the hydraulic oil in the oil tank 1 to the main oil way 2, and the hydraulic oil is distributed to the rotary oil way 3 and the brake oil way 4 according to a certain proportion through the monostable flow divider valve 24, so that the brake oil way 4 is effectively separated from an oil way where a lifting pump is located, and the probability that the brake oil way 4 cannot normally work due to insufficient oil pressure of the rotary oil way 3 when the lifting pump of the underground mine car works is reduced; the connection of the monostable flow divider 24 enables the gear pump 21 to supply oil normally for the rotary oil path 3 and simultaneously supplement pressure for the brake oil path 4, so that the brake assembly 6 can work normally, the stabilizing assembly 5 effectively improves the working stability of the brake assembly 6, and the working safety and stability of the underground mine car are improved.
Referring to fig. 1, a primary filter 22 is arranged between a gear pump 21 and an oil tank 1 in a main oil path 2, a middle filter 23 is further communicated between the gear pump 21 and a monostable shunt valve 24 in the main oil path 2, an oil inlet of the middle filter 23 is a port P1, an oil return port is a port T1, and a port P1 is closer to the gear pump 21 than a port T1.
An oil inlet of the monostable flow divider valve 24 is a P2 port, a first oil return port is T21, a second oil return port is T22, a control oil port is K2, and an oil drain port is L2; the P2 port communicates with the end of the main oil passage 2, the T21 port communicates with the rotary oil passage 3, the T22 port communicates with the brake oil passage 4, the K2 port communicates with the rotary oil passage 3, the K2 port can control the amount of oil flowing, and the L2 port communicates with the relief valve 241.
An oil inlet of the overflow valve 241 is P3, and an oil return port of the overflow valve 241 is T3; p3 communicates with L2, and T3 communicates with the tank 1.
An oil inlet of the power steering gear 31 is a P4 port, an oil return port is a T4 port, the P4 port and the T4 port are both communicated with the rotating oil way 3, and the rotating oil way 3 communicated with the T4 port is communicated with the oil tank 1.
During hydraulic oil in the oil tank 1 flowed into main oil circuit 2 under gear pump 21's effect, carried out prefilter to hydraulic oil through primary filter 22, the effectual life who improves gear pump 21, rethread middle section filter 23 further filters hydraulic oil, and then protects each component in the pressure supplementing system, has improved the life of pressure supplementing system and the stability of whole work. Hydraulic oil enters the monostable flow divider valve 24 from a port P2, after the hydraulic oil is divided proportionally in the monostable flow divider valve 24, most of the hydraulic oil enters the rotating oil way 3 through a port T21, a small amount of the hydraulic oil enters the rotating oil way 3 through a port T22, pressure compensation is carried out on the brake oil way 4, a part of the hydraulic oil flows into the rotating oil way 3 through a port K2, the hydraulic oil flowing into the rotating oil way 3 is controlled by adjusting the size of a valve port of the port K2, and the adjustability of a pressure compensation system is improved.
When the oil quantity provided for the monostable shunt valve 24 is larger than the outflow quantity of a T21 port, a T22 port and a K2 port, redundant hydraulic oil flows to the overflow valve 241 through the L2 port and flows to the oil tank 1 through the overflow valve 241, the working stability of the monostable shunt valve 24 is improved, meanwhile, the main oil way 2 is effectively protected, and the working stability of a pressure compensating system is improved; the monostable shunt valve 24 effectively supplements pressure for the rotating system under the condition of ensuring the normal oil supply of the rotating oil way 3, improves the working stability of the braking system and the working safety and stability of the underground mine car.
Referring to fig. 2, the stabilization system includes a flushing valve 51 and a plurality of accumulators 52, both the flushing valve 51 and the accumulators 52 communicating in the brake fluid passage 4 and located near the main fluid passage 2. The flushing valve 51 has the function of limiting the reverse flow of the hydraulic oil, the energy accumulator 52 has the function of adjusting the oil pressure of an oil way, the oil inlet of the flushing valve 51 is a port P5, the oil return port is a port T5, the first oil drain port is L51, and the second oil drain port is L52; the oil inlet of the accumulator 52 is P6.
The P5 port and the T5 port are communicated with the rotary oil path 3, the P5 port is close to the main oil path 2, the P6 port is connected with the part of the brake oil path 4, which is positioned at the T5 port and is far away from the main oil path 2, and the L51 port and the L52 port are communicated with the oil tank 1.
The hydraulic oil flowing into the brake oil passage 4 through the T22 enters the flushing valve 51 through the port P5 and continues to flow to the rotating oil passage 3 through the port T5, when the oil pressure at the port T5 is large, the hydraulic oil flowing into the port P5 flows to the oil tank 1 through the port L51, the hydraulic oil flowing through the non-return part of the flushing valve 51 flows to the oil tank 1 through the port L52, and the oil pressure of the brake oil passage 4 is kept balanced; when the oil pressure of the brake oil path 4 is larger after the port T5, part of the hydraulic oil enters the energy accumulator 52 through the port P6, the protection of the brake oil path 4 is effectively improved, and the working stability of the brake oil path 4 is improved.
Referring to fig. 2, the brake system includes a parking brake valve 61, a service brake valve 62, and a brake 63. An oil inlet of the service brake 63 is a port P7, an oil return port is a port T7, and an oil drain port is a port L7; an oil inlet of the service brake 63 is a port P8, an oil return port is a port P8, an oil drain port is a port L8, the brake oil path 4 is led out from the port P6 and then communicated with the port P7, a port T7 is communicated with the port P8, a port T8 is communicated with the brake 63, the ports L7 and L8 are communicated with the oil tank 1, and the ports L7 and L8 are in a normally closed state.
The brake 63 locks the wheels in an unloading state, so that the vehicle is braked; when the brake is stepped on, the port L8 is opened, hydraulic oil in the brake 63 flows to the oil tank 1 through the port L8, and then the brake 63 is unloaded, so that the deceleration and the braking of the vehicle are effectively realized; when the automobile is parked, the hand brake is pulled, the port L7 is opened, and the hydraulic oil in the brake 63 flows to the oil tank 1 through the port L7, so that the automobile is braked. If the oil pressure of the brake oil path 4 is insufficient, sufficient hydraulic oil cannot be provided for the brake 63, the brake 63 cannot release wheels, and the underground mine car cannot normally run, so that the working stability of the underground mine car is effectively improved in a manner of supplementing pressure to the brake oil path 4.
The implementation principle of the stable braking pressure compensating system in the embodiment of the application is as follows: the gear pump 21 supplies the hydraulic oil in the oil tank 1 to the main oil path 2, the hydraulic oil enters the monostable shunt valve 24 through a P2 port, wherein most of the hydraulic oil flows to the rotary oil path 3 through a T21 port and a K2 port, and part of the hydraulic oil flows to the brake oil path 4 through a T22 port, so that the pressure compensation on the brake oil path 4 is realized, and the working stability of the brake oil path 4 is improved; the connection arrangement of the monostable flow divider 24 also effectively separates the brake oil way 4 from the lifting pump, reduces the probability that the lifting pump works to reduce the oil pressure of the brake oil way 4, and further improves the safety and the stability of the underground mine car.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A stable braking pressure compensating system is characterized in that: the underground mine car steering system comprises an oil tank (1), a main oil way (2), a brake oil way (4) and a rotating oil way (3), wherein one end of the main oil way (2) is communicated with the oil tank (1), the main oil way (2) is communicated with a gear pump (21), the main oil way (2) is also communicated with a monostable shunt valve (24), one end of an oil outlet of the monostable shunt valve (24) is communicated with the rotating oil way (3), the other end of the oil outlet of the monostable shunt valve (24) is communicated with the brake oil way (4), the rotating oil way (3) is communicated with a power steering gear (31) for realizing the underground mine car steering function, and the tail end of the rotating oil way (3) is communicated with the oil tank (1).
2. A stable brake pressure supplementing system according to claim 1, wherein: and a control oil port of the monostable flow divider valve (24) is communicated with the rotary oil way (3).
3. A stable brake pressure supplementing system according to claim 1, wherein: an oil drain port of the monostable flow divider valve (24) is communicated with an overflow valve (241), and an oil outlet of the overflow valve (241) is communicated with the oil tank (1).
4. A stable brake pressure supplementing system according to claim 1, wherein: the main oil way (2) is communicated with a middle section filter (23).
5. The stable brake pressure compensating system of claim 4, wherein: the middle section filter (23) is communicated between the power pump and the monostable shunt valve (24).
6. A stable brake pressure supplementing system according to claim 1, wherein: the brake oil way (4) is communicated with a flushing valve (51), and oil drainage ports of the flushing valve (51) are communicated with the oil tank (1).
7. The stable brake pressure compensating system of claim 5, wherein: the brake oil way (4) is also communicated with an energy accumulator (52), and the energy accumulator (52) is positioned at the position, far away from the main oil way (2), of the flushing valve (51).
8. A stable brake pressure supplementing system according to claim 7, wherein: the plurality of accumulators (52) are arranged on the brake oil path (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120686841.8U CN215333696U (en) | 2021-04-02 | 2021-04-02 | Stable braking pressure compensating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120686841.8U CN215333696U (en) | 2021-04-02 | 2021-04-02 | Stable braking pressure compensating system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215333696U true CN215333696U (en) | 2021-12-28 |
Family
ID=79592497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120686841.8U Expired - Fee Related CN215333696U (en) | 2021-04-02 | 2021-04-02 | Stable braking pressure compensating system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215333696U (en) |
-
2021
- 2021-04-02 CN CN202120686841.8U patent/CN215333696U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211228 |