CN216232540U - Multifunctional steering system of engineering machinery vehicle - Google Patents
Multifunctional steering system of engineering machinery vehicle Download PDFInfo
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- CN216232540U CN216232540U CN202122835589.5U CN202122835589U CN216232540U CN 216232540 U CN216232540 U CN 216232540U CN 202122835589 U CN202122835589 U CN 202122835589U CN 216232540 U CN216232540 U CN 216232540U
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Abstract
The utility model discloses a multifunctional steering system of an engineering mechanical vehicle, which comprises a hydraulic oil tank, a steering pump, a steering gear, an electromagnetic directional valve, a front axle oil cylinder I, a front axle oil cylinder II, a rear axle oil cylinder I, a rear axle oil cylinder II and three-way joints I to IV, wherein the hydraulic oil tank is connected with the steering pump; one to four tee joints are respectively arranged at one port of the front axle oil cylinder I, the front axle oil cylinder II, the rear axle oil cylinder I and the rear axle oil cylinder II; the hydraulic oil tank is connected to a port T1 of the steering gear; the steering pump is connected to a port of a steering gear P1; a port B1 of the steering gear is connected to a port T2 of the electromagnetic directional valve, and a port A1 of the steering gear and the other port of the first front axle oil cylinder are connected to a second three-way joint; the other port of the front axle oil cylinder II and the port P2 of the electromagnetic directional valve are connected to a first tee joint; the port A2 of the electromagnetic directional valve and the other port of the first rear axle oil cylinder are connected to a fourth three-way joint; and the port B2 of the electromagnetic directional valve and the other port of the rear axle oil cylinder II are connected to a three-way joint III. The utility model has a plurality of selectable steering modes to meet the use requirements under different environments.
Description
Technical Field
The utility model relates to the technical field of engineering machinery, in particular to a multifunctional steering system of an engineering machinery vehicle.
Background
The work environment of a work machine is complex and often requires movement between different locations, including forward and reverse movements. Most of the existing engineering machinery adopts a single front wheel steering mode, the steering radius of the existing engineering machinery is large, and the existing engineering machinery is inconvenient to operate in a narrow space.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a multifunctional steering system of a construction machinery vehicle, which has a plurality of selectable steering modes so as to adapt to use requirements under different environments.
In order to achieve the above purpose, the solution of the utility model is:
a multifunctional steering system of an engineering mechanical vehicle comprises a hydraulic oil tank, a steering pump, a steering gear, an electromagnetic directional valve, a front axle oil cylinder I, a front axle oil cylinder II, a rear axle oil cylinder I, a rear axle oil cylinder II, a tee joint I, a tee joint II, a tee joint III and a tee joint IV; the first three-way joint is arranged at one port of the first front axle oil cylinder; the three-way joint II is arranged at one port of the front axle oil cylinder II; the three-way joint is arranged at one port of the first rear axle oil cylinder; the three-way joint four is arranged at one port of the rear axle oil cylinder two; the hydraulic oil tank is communicated to a port T1 of the steering gear; the steering pump is communicated to a port P1 of the steering gear; a port B1 of the steering gear is communicated to a port T2 of the electromagnetic directional valve, and a port A1 of the steering gear and the other port of the first front axle oil cylinder are communicated to the second three-way joint; the other port of the front axle oil cylinder II and the port P2 of the electromagnetic directional valve are communicated to the tee joint I; the port A2 of the electromagnetic directional valve and the other port of the first rear axle oil cylinder are communicated to the fourth three-way joint; and a port B2 of the electromagnetic directional valve and the other port of the rear axle oil cylinder II are communicated to the three-way joint III.
The multifunctional steering system of the engineering machinery vehicle further comprises a change-over switch used for controlling the electromagnetic reversing valve, and the change-over switch is electrically connected with the electromagnetic reversing valve.
By adopting the technical scheme, the rear axle oil cylinder I and the rear axle oil cylinder II are arranged on the rear axle of the engineering mechanical vehicle and are communicated to the hydraulic reversing system of the engineering mechanical vehicle through the electromagnetic reversing valve, and different oil ways can be changed by switching the modes of the electromagnetic reversing valve, so that different steering modes can be selected by a driver to meet the use requirements under different environments.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the oil circuit for the front wheel steering mode in accordance with an embodiment of the present invention;
FIG. 3 is a schematic diagram of the oil circuit for the four wheel steering mode in accordance with an embodiment of the present invention;
FIG. 4 is a schematic diagram of an oil circuit in crab mode according to an embodiment of the present invention;
the reference numbers illustrate:
1- - -a hydraulic oil tank; 2-a steering pump; 3-a diverter;
4-an electromagnetic directional valve; 5- - -a front axle oil cylinder I; 6- - -a front axle oil cylinder II;
7- - -a rear axle oil cylinder I; 8- - -a second rear axle oil cylinder; 9- - -a tee joint I;
10- -three way connection II; 11- -three way connection; 12- -three way connection four;
13- -Change-over switch.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following specific examples.
The utility model relates to a multifunctional steering system of an engineering mechanical vehicle, which comprises a hydraulic oil tank 1, a steering pump 2, a steering gear 3, an electromagnetic directional valve 4, a front axle oil cylinder I5, a front axle oil cylinder II 6, a rear axle oil cylinder I7, a rear axle oil cylinder II 8, a three-way joint I9, a three-way joint II 10, a three-way joint III 11 and a three-way joint IV 12;
the tee joint I9 is arranged at one port of the front axle oil cylinder I5;
the three-way joint II 10 is arranged at one port of the front axle oil cylinder II 6;
the three-way joint III 11 is arranged at one port of the rear axle oil cylinder I7;
the fourth tee joint 12 is arranged at one port of the second rear axle oil cylinder 8;
the hydraulic oil tank 1 is communicated to a port T1 of the steering gear 3;
the steering pump 2 is communicated to a port P1 of the steering gear 3;
a port B1 of the steering gear 3 is communicated to a port T2 of the electromagnetic directional valve 4, a port A1 of the steering gear 3 and the other port of the front axle oil cylinder I5 are communicated to a three-way joint II 10;
the other port of the front axle oil cylinder II 6 and the port P2 of the electromagnetic directional valve 4 are communicated to a tee joint I9;
the port A2 of the electromagnetic directional valve 4 and the other port of the first rear axle oil cylinder 7 are both communicated to a three-way joint IV 12;
and a port B2 of the electromagnetic directional valve 4 and the other port of the rear axle oil cylinder II 8 are communicated to a three-way joint III 11.
Referring to FIG. 1, a specific embodiment of the present invention is shown.
The steering gear 3 is BZZ123-E125, and the manufacturer is Zhenjiang Hydraulic pressure corporation.
The model number of the electromagnetic directional valve 4 is 4WE6E-6X/ED24, and the manufacturer is Ningbo Wanlfu hydraulic pressure limited company.
The embodiment further comprises a change-over switch 13 for controlling the electromagnetic directional valve 4, wherein the change-over switch 13 is arranged in a cab of the engineering vehicle and is electrically connected with the electromagnetic directional valve 4, so that a driver can conveniently operate to change the steering mode. In this embodiment, the three front, middle, and rear positions of the selector switch 13 are set to four-wheel steering, front-wheel steering, and crab mode, respectively.
The movable ends of the first front axle oil cylinder 5 and the second front axle oil cylinder 6 are in transmission connection with two front wheels of the engineering vehicle, and the movable ends of the first rear axle oil cylinder 7 and the second rear axle oil cylinder 8 are in transmission connection with two rear wheels of the engineering vehicle, so that the front/rear wheels of the engineering vehicle can be driven to rotate by a certain angle to realize steering when the oil pressure in each oil cylinder changes.
The working principle of the utility model is (the solid arrow represents the oil inlet direction and the dotted arrow represents the oil outlet direction in fig. 2 to 4):
referring to fig. 2, when the driver operates the changeover switch 13 in the neutral position, the electromagnetic directional valve 4 is not opened. After the oil supplied by the steering pump 2 passes through the steering gear 3 and the three-way joint II 10 in sequence, the three-way joint II 10 supplies oil to the front axle oil cylinder I5 and the front axle oil cylinder II 6 respectively, the pistons of the front axle oil cylinder I5 and the front axle oil cylinder II 6 are driven to move to achieve front wheel steering, the return oil of the front axle oil cylinder I5 and the front axle oil cylinder II 6 passes through the three-way joint I9, the electromagnetic directional valve 4 and the steering gear 3 in sequence and returns to the hydraulic oil tank 1, and a front wheel steering mode is achieved.
Referring to fig. 3, when the driver operates the selector switch 13 in the forward position, the electromagnetic directional valve 4 is energized, and the port a2 thereof is opened. After oil supplied by the steering pump 2 passes through the steering gear 3 and the three-way joint two 10 in sequence, the three-way joint two 10 supplies oil to the front axle oil cylinder one 5 and the front axle oil cylinder two 6 respectively to drive pistons of the front axle oil cylinder one 5 and the front axle oil cylinder two 6 to move to realize front wheel steering, after oil returned by the front axle oil cylinder one 5 and the front axle oil cylinder two 6 passes through the three-way joint one 9, the electromagnetic directional valve 4 and the three-way joint four 12 in sequence, the three-way joint four 12 supplies oil to the rear axle oil cylinder one 7 and the rear axle oil cylinder two 8 respectively to drive the pistons of the front axle oil cylinder one 5 and the rear axle oil cylinder two 8 to move to realize rear wheel steering (reverse to the front wheels), and oil returned by the rear axle oil cylinder one 7 and the rear axle oil cylinder two 8 passes through the three-way joint three 11, the electromagnetic directional valve 4 and the steering gear 3 to return to the hydraulic oil tank 1, so that a four-wheel steering mode is realized.
Referring to fig. 4, when the driver operates the selector switch 13 in the rear position, the electromagnetic directional valve 4 is energized, and the port B2 thereof is opened. After oil supplied by the steering pump 2 passes through the steering gear 3 and the three-way joint two 10 in sequence, the three-way joint two 10 supplies oil to the front axle oil cylinder one 5 and the front axle oil cylinder two 6 respectively to drive pistons of the front axle oil cylinder one 5 and the front axle oil cylinder two 6 to move to realize front wheel steering, after oil returned by the front axle oil cylinder one 5 and the front axle oil cylinder two 6 passes through the three-way joint one 9, the electromagnetic directional valve 4 and the three-way joint three 11 in sequence, the three-way joint three 11 supplies oil to the rear axle oil cylinder one 7 and the rear axle oil cylinder two 8 respectively to drive the pistons of the front axle oil cylinder one 5 and the rear axle oil cylinder two 8 to move to realize rear wheel steering (the same direction as the front wheels), and oil returned by the rear axle oil cylinder one 7 and the rear axle oil cylinder two 8 passes through the three-way joint four 12, the electromagnetic directional valve 4 and the steering gear 3 to return to the hydraulic oil tank 1, so that a crab running mode (the engineering mechanical vehicle moves obliquely at an angle of 28 degrees approximately) is realized.
Through the scheme, the rear axle oil cylinder I7 and the rear axle oil cylinder II 8 are arranged on the rear axle of the engineering machinery vehicle and are communicated to the hydraulic reversing system of the engineering machinery vehicle through the electromagnetic reversing valve 4, and different oil ways can be changed by switching the mode of the electromagnetic reversing valve 4, so that different steering modes can be selected by a driver to meet the use requirements under different environments.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications thereof by those skilled in the art should be considered as not departing from the scope of the present invention.
Claims (2)
1. A multifunctional steering system of an engineering machinery vehicle is characterized in that:
the hydraulic steering system comprises a hydraulic oil tank, a steering pump, a steering gear, an electromagnetic directional valve, a front axle oil cylinder I, a front axle oil cylinder II, a rear axle oil cylinder I, a rear axle oil cylinder II, a tee joint I, a tee joint II, a tee joint III and a tee joint IV;
the first three-way joint is arranged at one port of the first front axle oil cylinder;
the three-way joint II is arranged at one port of the front axle oil cylinder II;
the three-way joint is arranged at one port of the first rear axle oil cylinder;
the three-way joint four is arranged at one port of the rear axle oil cylinder two;
the hydraulic oil tank is communicated to a port T1 of the steering gear;
the steering pump is communicated to a port P1 of the steering gear;
a port B1 of the steering gear is communicated to a port T2 of the electromagnetic directional valve, and a port A1 of the steering gear and the other port of the first front axle oil cylinder are communicated to the second three-way joint;
the other port of the front axle oil cylinder II and the port P2 of the electromagnetic directional valve are communicated to the tee joint I;
the port A2 of the electromagnetic directional valve and the other port of the first rear axle oil cylinder are communicated to the fourth three-way joint;
and a port B2 of the electromagnetic directional valve and the other port of the rear axle oil cylinder II are communicated to the three-way joint III.
2. The multi-function steering system for a working machine vehicle according to claim 1, wherein:
the electromagnetic reversing valve is characterized by further comprising a change-over switch used for controlling the electromagnetic reversing valve, and the change-over switch is electrically connected with the electromagnetic reversing valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122835589.5U CN216232540U (en) | 2021-11-18 | 2021-11-18 | Multifunctional steering system of engineering machinery vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122835589.5U CN216232540U (en) | 2021-11-18 | 2021-11-18 | Multifunctional steering system of engineering machinery vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN216232540U true CN216232540U (en) | 2022-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122835589.5U Active CN216232540U (en) | 2021-11-18 | 2021-11-18 | Multifunctional steering system of engineering machinery vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115743294A (en) * | 2022-12-09 | 2023-03-07 | 四川蓝海智能装备制造有限公司 | Bidirectional driving four-wheel multifunctional hydraulic control system |
-
2021
- 2021-11-18 CN CN202122835589.5U patent/CN216232540U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115743294A (en) * | 2022-12-09 | 2023-03-07 | 四川蓝海智能装备制造有限公司 | Bidirectional driving four-wheel multifunctional hydraulic control system |
| CN115743294B (en) * | 2022-12-09 | 2023-08-25 | 四川蓝海智能装备制造有限公司 | Multifunctional hydraulic control system for two-way driving four wheels |
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