CN204250153U - Tractor truck and hydrostatic steering system thereof - Google Patents
Tractor truck and hydrostatic steering system thereof Download PDFInfo
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- CN204250153U CN204250153U CN201420759241.XU CN201420759241U CN204250153U CN 204250153 U CN204250153 U CN 204250153U CN 201420759241 U CN201420759241 U CN 201420759241U CN 204250153 U CN204250153 U CN 204250153U
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Abstract
This application discloses a kind of hydrostatic steering system of tractor truck, comprise fuel tank, gear type pump, motor, the first two-bit triplet electromagnetic valve, all-hydraulic steering gear, steering cylinder and three position four-way electromagnetic valve; Manual steering system is connected to form by the first two-bit triplet electromagnetic valve, fuel tank, all-hydraulic steering gear and steering cylinder; Automatically controlled steering swivel system is connected to form by the first two-bit triplet electromagnetic valve, fuel tank, three position four-way electromagnetic valve and steering cylinder.In the hydrostatic steering system of tractor truck of the present utility model, because manual steering hydraulic efficiency pressure system can control tractor truck at steering position, and automatically controlled steering hydraulic system can control outside steering position, thus this hydrostatic steering system has two kinds of master modes, meets the needs of different operating mode.The invention also discloses a kind of tractor truck comprising this hydrostatic steering system.
Description
Technical field
The utility model relates to tractor truck technical field, particularly a kind of hydrostatic steering system of tractor truck.Also relate to a kind of tractor truck comprising this hydrostatic steering system.
Background technology
Tractor truck is widely used in goods transport field, generally to use in all hydraulic pressure steering-gear or mechanical steering system a kind of realizes turning to of vehicle for existing tractor truck, its steering control mode is all ride in steering dish on vehicle by people to carry out course changing control, and its master mode is single.
Because tractor truck is when transporting cargo, the situation that goods occupies driver position can be there is, chaufeur is caused to control bearing circle by ride traction car, therefore, adopt existing all hydraulic pressure steering-gear and mechanical steering system all cannot complete course changing control, tractor truck can not meet the needs of existing operating mode.
In sum, how to solve existing steering control mode single, in the outer problem of tractor truck being carried out to course changing control of steering position, those skilled in the art's problem demanding prompt solution cannot be become.
Utility model content
In view of this, the purpose of this utility model is the hydrostatic steering system providing a kind of tractor truck, all can carry out course changing control to tractor truck outside steering position and steering position.
Another object of the present utility model is to provide a kind of tractor truck comprising this hydrostatic steering system, with the needs of satisfied different operating mode.
For achieving the above object, the utility model provides following technical scheme:
A hydrostatic steering system for tractor truck, comprising:
Fuel tank;
Gear type pump, its oil suction is communicated with described fuel tank;
Motor, drives described gear type pump;
First two-bit triplet electromagnetic valve, the outlet of its import P2 and described gear type pump;
All-hydraulic steering gear, its import P3 is communicated with the A2 mouth of described first two-bit triplet electromagnetic valve, and the T3 mouth of described all-hydraulic steering gear is communicated with described fuel tank;
Steering cylinder, the right working oil chamber of described steering cylinder is communicated with the A3 mouth of described all-hydraulic steering gear, and the left working oil chamber of described steering cylinder is communicated with the B3 mouth of described all-hydraulic steering gear;
Three position four-way electromagnetic valve, its import P4 is communicated with the B2 mouth of described first two-bit triplet electromagnetic valve, the T4 mouth of described three position four-way electromagnetic valve is communicated with described fuel tank, the A4 mouth of described three position four-way electromagnetic valve is communicated with described left working oil chamber, and the B4 mouth of described three position four-way electromagnetic valve is communicated with described right working oil chamber.
Preferably, in above-mentioned hydrostatic steering system, A3 mouth, the described right working oil chamber of described all-hydraulic steering gear are communicated with by the first triple valve with the B4 mouth of described three position four-way electromagnetic valve; B3 mouth, the described left working oil chamber of described all-hydraulic steering gear are communicated with by the second triple valve with the A4 mouth of described three position four-way electromagnetic valve.
Preferably, in above-mentioned hydrostatic steering system, it is without turning to the working oil circulating path of pattern successively through import P2 and the A2 mouth of described fuel tank, gear type pump, described first two-bit triplet electromagnetic valve, and the import P3 of described all-hydraulic steering gear and T3 mouth, return described fuel tank.
Preferably, in above-mentioned hydrostatic steering system, the working oil circulating path of its M/C right-hand rotation pattern through B3 mouth and the T3 mouth of the right working oil chamber of the import P3 of the import P2 of described fuel tank, gear type pump, described first two-bit triplet electromagnetic valve and A2 mouth, described all-hydraulic steering gear and A3 mouth, described steering cylinder and left working oil chamber, described all-hydraulic steering gear, returns described fuel tank successively.
Preferably, in above-mentioned hydrostatic steering system, the working oil circulating path of its M/C left-hand rotation pattern through A3 mouth and the T3 mouth of the left working oil chamber of the import P3 of the import P2 of described fuel tank, gear type pump, described first two-bit triplet electromagnetic valve and A2 mouth, described all-hydraulic steering gear and B3 mouth, described steering cylinder and right working oil chamber, described all-hydraulic steering gear, returns described fuel tank successively.
Preferably, in above-mentioned hydrostatic steering system, the working oil circulating path of its electric control operation right-hand rotation pattern through A4 mouth and the T4 mouth of the right working oil chamber of the import P4 of the import P2 of described fuel tank, gear type pump, described first two-bit triplet electromagnetic valve and B2 mouth, described three position four-way electromagnetic valve and B4 mouth, described steering cylinder and left working oil chamber, described three position four-way electromagnetic valve, returns described fuel tank successively.
Preferably, in above-mentioned hydrostatic steering system, the working oil circulating path of its electric control operation right-hand rotation pattern through B4 mouth and the T4 mouth of the left working oil chamber of the import P4 of the import P2 of described fuel tank, gear type pump, described first two-bit triplet electromagnetic valve and B2 mouth, described three position four-way electromagnetic valve and A4 mouth, described steering cylinder and right working oil chamber, described three position four-way electromagnetic valve, returns described fuel tank successively.
Preferably, in above-mentioned hydrostatic steering system, also comprise the second two-bit triplet electromagnetic valve, the import P1 of described second two-position three-way valve and the outlet of described gear type pump, A1 mouth is communicated with the import P2 of described first two-bit triplet electromagnetic valve.
Preferably, in above-mentioned hydrostatic steering system, also comprise by pass valve and return filter, the import of described by pass valve and the outlet of described gear type pump, the two-port of described return filter is communicated with described fuel tank with the outlet of described by pass valve respectively.
The utility model additionally provides a kind of tractor truck, comprises hydrostatic steering system, and described hydrostatic steering system is the hydrostatic steering system described in above any one.
Compared with prior art, the beneficial effects of the utility model are:
In the hydrostatic steering system of the tractor truck that the utility model provides, manual steering system is connected to form by fuel tank, the first two-bit triplet electromagnetic valve, all-hydraulic steering gear, steering cylinder, automatically controlled steering swivel system is connected to form by fuel tank, the first two-bit triplet electromagnetic valve, three position four-way electromagnetic valve and steering cylinder, by control the first two-bit triplet electromagnetic valve and three position four-way electromagnetic valve dead electricity situation, control tractor truck and adopt manual steering or automatically controlledly to turn to and concrete steering direction.Because manual steering system can control tractor truck at steering position, and automatically controlled steering swivel system can control outside steering position, thus this hydrostatic steering system has two kinds of master modes, meets the needs of different operating mode.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The schematic diagram of the hydrostatic steering system of a kind of tractor truck that Fig. 1 provides for the utility model embodiment.
In FIG, 1 be fuel tank, 2 be gear type pump, 3 be motor, 4 be the 3rd triple valve, 5 to be the second two-bit triplet electromagnetic valve, 6 be the first two-bit triplet electromagnetic valve, 7 be steering cylinder for all-hydraulic steering gear, 8 be the second triple valve, 9 is the first triple valve, 10,11 be three position four-way electromagnetic valve, 12 be by pass valve, 13 be return filter.
Detailed description of the invention
Core of the present utility model there is provided a kind of hydrostatic steering system of tractor truck, makes personnel all can carry out course changing control to tractor truck outside steering position and steering position, meets the user demand of different operating mode.
The utility model additionally provides a kind of tractor truck comprising this hydrostatic steering system, can meet the user demand of different operating mode.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to Fig. 1, the schematic diagram of the hydrostatic steering system of a kind of tractor truck that Fig. 1 provides for the utility model embodiment.
The utility model embodiment provides a kind of hydrostatic steering system of tractor truck, hereinafter referred to as hydrostatic steering system, comprise fuel tank 1, gear type pump 2, motor 3, first two-bit triplet electromagnetic valve 6, all-hydraulic steering gear 7, steering cylinder 10 and three position four-way electromagnetic valve 11; Wherein, the oil suction of gear type pump 2 is communicated with fuel tank 1, and motor 3 driving gear pump 2 draws working oil from fuel tank 1; The import P2 of the first two-bit triplet electromagnetic valve 6 and the outlet of gear type pump 2, the A2 mouth of the first two-bit triplet electromagnetic valve 6 is communicated with the import P3 of all-hydraulic steering gear 7; The T3 mouth of all-hydraulic steering gear 7 is communicated with fuel tank 1, and A3 mouth is communicated with the right working oil chamber of steering cylinder 10, and B3 mouth is communicated with the left working oil chamber of steering cylinder 10; The import P4 of three position four-way electromagnetic valve 11 is communicated with the B2 mouth of the first two-bit triplet electromagnetic valve 3, and T4 mouth is communicated with fuel tank 1, and B4 mouth is communicated with the right working oil chamber of steering cylinder 10, and A4 mouth is communicated with the left working oil chamber of steering cylinder 10.
Hydrostatic steering system in above-described embodiment have employed two cover steering control systems, namely the manual steering system be formed by connecting by fuel tank 1, first two-bit triplet electromagnetic valve 6, all-hydraulic steering gear 7 and steering cylinder 10, and the automatically controlled steering swivel system be formed by connecting by fuel tank 1, first two-bit triplet electromagnetic valve 6, three position four-way electromagnetic valve 11 and steering cylinder 10; When chaufeur can ride on steering position, manual steering system (steering wheel rotation) can be adopted to turn to, when occurring that steering position is taken by goods, cannot ride traction car time, outside steering position, can be turned to by automatically controlled steering swivel system.Visible, the hydrostatic steering system that the utility model provides not only can carry out course changing control at steering position to tractor truck, can also carry out course changing control, meet the user demand of different operating mode outside steering position.The concrete operations of two kinds of steering swivel systems are as follows:
In above-mentioned hydrostatic steering system, when specifying the electromagnet a1 dead electricity of the first two-bit triplet electromagnetic valve 6, its import P2 is communicated with A2 mouth, and B2 mouth is closed, and when electromagnet a1 obtains electric, import P2 is communicated with B2 mouth, and A2 mouth is closed; When the electromagnet a3 of three position four-way electromagnetic valve 11 obtains electric, its import P4 is communicated with A4 mouth, and B4 mouth is communicated with T4 mouth, when electromagnet b3 obtains electric, import P4 is communicated with B4 mouth, and A4 mouth is communicated with T4 mouth, when the equal dead electricity of electromagnet a3 and electromagnetic valve b3, each interface of three position four-way electromagnetic valve 11 is not all communicated with.Certainly, when also can specify electromagnetic valve a1 dead electricity, import P2 is communicated with B2 mouth, and A2 mouth closedown etc., are defined as example with the first below and are described.
Hydrostatic steering system in the utility model comprises five kinds of mode of operations, is without turning to pattern, M/C right-hand rotation pattern, M/C left-hand rotation pattern, electric control operation right-hand rotation pattern and electric control operation left-hand rotation pattern respectively.Wherein: when carrying out nothing and turning to pattern, the electromagnet a1 dead electricity of the first two-bit triplet electromagnetic valve 6, the electromagnet a3 of three position four-way electromagnetic valve 11 and b3 dead electricity, the bearing circle of all-hydraulic steering gear 7 is without operation, and its import P3 is communicated with T3 mouth, B3 and A3 mouth is obstructed, then the circulating path of working oil is successively through import P2, A2 mouth of fuel tank 1, gear type pump 2, first two-bit triplet electromagnetic valve 6, and import P3, T3 mouth of all-hydraulic steering gear 7, returns fuel tank 1, system unload, does not turn to.
When carrying out M/C right-hand rotation pattern, first two-bit triplet electromagnetic valve 6 turns to pattern identical with the state of three position four-way electromagnetic valve 11 with nothing, rotate clockwise steering handwheel (according to driving rule, rotate clockwise bearing circle, vehicle is turned right), the import P3 of all-hydraulic steering gear 7 is communicated with A3 mouth, and B3 mouth is communicated with T3 mouth.Then the circulating path of working oil is that working oil is sucked from fuel tank 1 by gear type pump 2, through import P2, A2 mouth of the first two-bit triplet electromagnetic valve 6, import P3, A3 mouth of all-hydraulic steering gear 7 enters the right working oil chamber of steering cylinder 10, the piston that working oil promotes in steering cylinder 10 moves in working oil chamber direction left, make working oil in left working oil chamber out, and returning fuel tank 1 through the B3 mouth of all-hydraulic steering gear 7, T3 mouth, the piston of steering cylinder 10, to left movement, realizes tractor truck and turns right.
When carrying out M/C left-hand rotation pattern, first two-bit triplet electromagnetic valve 6 turns to pattern identical with the state of three position four-way electromagnetic valve 11 with nothing, rotate counterclockwise and turn to dish (according to driving rule, rotate counterclockwise bearing circle, vehicle turns left), the import P3 of all-hydraulic steering gear 7 is communicated with B3 mouth, and A3 mouth is communicated with T3 mouth.Then the circulating path of working oil is that working oil is sucked from fuel tank 1 by gear type pump 2, through import P2, A2 mouth of the first two-bit triplet electromagnetic valve 6, import P3, B3 mouth of all-hydraulic steering gear 7 enters the left working oil chamber of steering cylinder 10, the piston that working oil promotes in steering cylinder 10 moves in working oil chamber direction to the right, make working oil in right working oil chamber out, and returning fuel tank 1 through the A3 mouth of all-hydraulic steering gear 7, T3 mouth, the piston of steering cylinder 10 moves right, and realizes tractor truck.All-hydraulic steering gear 7, when motor 3 does not work, can also play the effect of manual pump, realizes vehicle manual steering.
When carrying out electric control operation right-hand rotation pattern, the electromagnet a2 of the first two-bit triplet electromagnetic valve 6 obtains electric, and the electromagnet b3 of three position four-way electromagnetic valve 11 obtains electric, electromagnet a3 dead electricity, and import P3 and the T3 of all-hydraulic steering gear 7 is communicated with, and B3 and A3 closes.Then the circulating path of working oil is that working oil is sucked from fuel tank 1 by gear type pump 2, through import P2, B2 mouth of the first two-bit triplet electromagnetic valve 6, import P4, B4 mouth of three position four-way electromagnetic valve 11 enters the right working oil chamber of steering cylinder 10, the piston that working oil promotes in steering cylinder 10 moves in working oil chamber direction left, make working oil in left working oil chamber out, and return fuel tank 1 through the A4 mouth of three position four-way electromagnetic valve 11, T4 mouth, the piston of steering cylinder 10, to left movement, realizes tractor truck and turns right.
When carrying out electric control operation left-hand rotation pattern, the electromagnet a2 of the first two-bit triplet electromagnetic valve 6 obtains electric, the electromagnet b3 dead electricity of three position four-way electromagnetic valve 11, and electromagnet a3 obtains electric, and import P3 and the T3 of all-hydraulic steering gear 7 is communicated with, and B3 and A3 closes.Then the circulating path of working oil is that working oil is sucked from fuel tank 1 by gear type pump 2, through import P2, B2 mouth of the first two-bit triplet electromagnetic valve 6, import P4, A4 mouth of three position four-way electromagnetic valve 11 enters the left working oil chamber of steering cylinder 10, the piston that working oil promotes in steering cylinder 10 moves in working oil chamber direction to the right, make working oil in right working oil chamber out, and return fuel tank through the B4 mouth of three position four-way electromagnetic valve 11, T4 mouth, the piston of steering cylinder 10 moves right, and realizes tractor truck.
As shown in Figure 1, in the present embodiment, the A3 mouth of all-hydraulic steering gear 7, the right working oil chamber of steering cylinder 10 are communicated with by the first triple valve 9 with the B4 mouth of three position four-way electromagnetic valve 11, to reduce the laying of pipeline, certainly, the A3 mouth of all-hydraulic steering gear 7 can also be communicated with the right working oil chamber of steering cylinder 10 respectively with the B4 mouth of three position four-way electromagnetic valve 11; The B3 mouth of all-hydraulic steering gear 7, the left working oil chamber of steering cylinder 10 are communicated with by the second triple valve 8 with the A4 mouth of three position four-way electromagnetic valve 11, to reduce the laying of pipeline, certainly, also the B3 mouth of all-hydraulic steering gear 7 can be communicated with the left working oil chamber of steering cylinder 10 respectively with the A3 mouth of three position four-way electromagnetic valve 11.
In the present embodiment, hydrostatic steering system also comprises the second two-bit triplet electromagnetic valve 5, the import P1 of the second two-bit triplet electromagnetic valve 5 and the outlet of gear type pump 2, A1 mouth is communicated with the import P2 of the first two-bit triplet electromagnetic valve 6, when specifying the electromagnet a1 dead electricity of the second two-bit triplet electromagnetic valve 5, its import P1 is communicated with A1 mouth, and B1 mouth is closed.The object arranging the second two-bit triplet electromagnetic valve 5 is to be communicated with by other accessory equipment of B1 mouth and vehicle, for other additional function of vehicle, certainly, if vehicle is without other additional function, can not arrange the second two-bit triplet electromagnetic valve 5.
In order to ensure the safety of hydrostatic steering system further, in this enforcement, hydrostatic steering system also comprises by pass valve 12, the import of by pass valve 12 and the outlet of gear type pump 2, the outlet of by pass valve 12 is communicated with fuel tank 1, when system oil pressure is excessive, carries out release by by pass valve 12.
Further; in the present embodiment; hydrostatic steering system also comprises return filter 13; the two-port of return filter 13 is communicated with fuel tank 1 with the outlet of by pass valve 12 respectively; filtered by return filter 13 pairs of working oils; remove impurity, to ensure the recycle of working oil, and protect power hydraulic system.
When being provided with the second two-bit triplet electromagnetic valve 5, the second two-bit triplet electromagnetic valve 5, gear type pump 2 are communicated with by the 3rd triple valve 4 with by pass valve 12.
The utility model embodiment still provides a kind of tractor truck, comprises hydrostatic steering system, wherein, and the hydrostatic steering system of hydrostatic steering system described by above whole embodiment.By arranging this hydrostatic steering system, can realize the manual steering of tractor truck and automatically controlledly to turn to, chaufeur can carry out course changing control to tractor truck outside steering position and steering position, to adapt to the demand of different operating mode.
In this specification sheets, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a hydrostatic steering system for tractor truck, is characterized in that, comprising:
Fuel tank (1);
Gear type pump (2), its oil suction is communicated with described fuel tank (1);
Motor (3), drives described gear type pump (2);
First two-bit triplet electromagnetic valve (6), the outlet of its import P2 and described gear type pump (2);
All-hydraulic steering gear (7), its import P3 is communicated with the A2 mouth of described first two-bit triplet electromagnetic valve (6), and the T3 mouth of described all-hydraulic steering gear (7) is communicated with described fuel tank (1);
Steering cylinder (10), the right working oil chamber of described steering cylinder (10) is communicated with the A3 mouth of described all-hydraulic steering gear (7), and the left working oil chamber of described steering cylinder (10) is communicated with the B3 mouth of described all-hydraulic steering gear (7);
Three position four-way electromagnetic valve (11), its import P4 is communicated with the B2 mouth of described first two-bit triplet electromagnetic valve (6), the T4 mouth of described three position four-way electromagnetic valve (11) is communicated with described fuel tank (1), the A4 mouth of described three position four-way electromagnetic valve (11) is communicated with described left working oil chamber, and the B4 mouth of described three position four-way electromagnetic valve (11) is communicated with described right working oil chamber.
2. hydrostatic steering system according to claim 1, it is characterized in that, the A3 mouth of described all-hydraulic steering gear (7), described right working oil chamber are communicated with by the first triple valve (9) with the B4 mouth of described three position four-way electromagnetic valve (11); The B3 mouth of described all-hydraulic steering gear (7), described left working oil chamber are communicated with by the second triple valve (8) with the A4 mouth of described three position four-way electromagnetic valve (11).
3. hydrostatic steering system according to claim 1, it is characterized in that, it is without turning to the working oil circulating path of pattern successively through import P2 and the A2 mouth of described fuel tank (1), gear type pump (2), described first two-bit triplet electromagnetic valve (6), the import P3 of described all-hydraulic steering gear (7) and T3 mouth, return described fuel tank (1).
4. hydrostatic steering system according to claim 1, it is characterized in that, the working oil circulating path of its M/C right-hand rotation pattern is successively through the right working oil chamber of the import P3 of the import P2 of described fuel tank (1), gear type pump (2), described first two-bit triplet electromagnetic valve (6) and A2 mouth, described all-hydraulic steering gear (7) and A3 mouth, described steering cylinder (10), working oil, through the B3 mouth of described left working oil chamber, described all-hydraulic steering gear (7) and T3 mouth, returns described fuel tank (1).
5. hydrostatic steering system according to claim 1, it is characterized in that, the working oil circulating path of its M/C left-hand rotation pattern is successively through the left working oil chamber of the import P3 of the import P2 of described fuel tank (1), gear type pump (2), described first two-bit triplet electromagnetic valve (6) and A2 mouth, described all-hydraulic steering gear (7) and B3 mouth, described steering cylinder (10), working oil, through the A3 mouth of described right working oil chamber, described all-hydraulic steering gear (7) and T3 mouth, returns described fuel tank (1).
6. hydrostatic steering system according to claim 1, it is characterized in that, the working oil circulating path of its electric control operation right-hand rotation pattern is successively through the right working oil chamber of the import P4 of the import P2 of described fuel tank (1), gear type pump (2), described first two-bit triplet electromagnetic valve (6) and B2 mouth, described three position four-way electromagnetic valve (11) and B4 mouth, described steering cylinder (10), working oil, through the A4 mouth of described left working oil chamber, described three position four-way electromagnetic valve (11) and T4 mouth, returns described fuel tank (1).
7. hydrostatic steering system according to claim 1, it is characterized in that, the working oil circulating path of its electric control operation right-hand rotation pattern is successively through the left working oil chamber of the import P4 of the import P2 of described fuel tank (1), gear type pump (2), described first two-bit triplet electromagnetic valve (6) and B2 mouth, described three position four-way electromagnetic valve (11) and A4 mouth, described steering cylinder (10), working oil, through the B4 mouth of described right working oil chamber, described three position four-way electromagnetic valve (11) and T4 mouth, returns described fuel tank (1).
8. hydrostatic steering system according to claim 1, it is characterized in that, also comprise the second two-bit triplet electromagnetic valve (5), the import P1 of described second two-position three-way valve (5) and the outlet of described gear type pump (2), A1 mouth is communicated with the import P2 of described first two-bit triplet electromagnetic valve (6).
9. hydrostatic steering system according to claim 1, it is characterized in that, also comprise by pass valve (12) and return filter (13), the import of described by pass valve (12) and the outlet of described gear type pump (2), the two-port of described return filter (13) is communicated with described fuel tank (1) with the outlet of described by pass valve (12) respectively.
10. a tractor truck, comprises hydrostatic steering system, it is characterized in that described hydrostatic steering system is for the hydrostatic steering system as described in any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420759241.XU CN204250153U (en) | 2014-12-05 | 2014-12-05 | Tractor truck and hydrostatic steering system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420759241.XU CN204250153U (en) | 2014-12-05 | 2014-12-05 | Tractor truck and hydrostatic steering system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204250153U true CN204250153U (en) | 2015-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420759241.XU Expired - Fee Related CN204250153U (en) | 2014-12-05 | 2014-12-05 | Tractor truck and hydrostatic steering system thereof |
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| CN (1) | CN204250153U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104386123A (en) * | 2014-12-05 | 2015-03-04 | 衡阳合力工业车辆有限公司 | Tractor and hydraulic steering system |
| CN105405349A (en) * | 2015-12-11 | 2016-03-16 | 广东交通职业技术学院 | Theory-practice integrated teaching method of hydraulic steering system curriculum |
| CN109017981A (en) * | 2018-07-23 | 2018-12-18 | 中国铁建重工集团有限公司 | Walking machine and its hydraulic steering system |
-
2014
- 2014-12-05 CN CN201420759241.XU patent/CN204250153U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104386123A (en) * | 2014-12-05 | 2015-03-04 | 衡阳合力工业车辆有限公司 | Tractor and hydraulic steering system |
| CN105405349A (en) * | 2015-12-11 | 2016-03-16 | 广东交通职业技术学院 | Theory-practice integrated teaching method of hydraulic steering system curriculum |
| CN105405349B (en) * | 2015-12-11 | 2018-05-15 | 广东交通职业技术学院 | A kind of teaching combining theory with practice method of hydraulic steering system course |
| CN109017981A (en) * | 2018-07-23 | 2018-12-18 | 中国铁建重工集团有限公司 | Walking machine and its hydraulic steering system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20161205 |
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| CF01 | Termination of patent right due to non-payment of annual fee |