CN112623026A - Steering and suspension adjusting composite system and engineering vehicle - Google Patents
Steering and suspension adjusting composite system and engineering vehicle Download PDFInfo
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- CN112623026A CN112623026A CN202011618658.0A CN202011618658A CN112623026A CN 112623026 A CN112623026 A CN 112623026A CN 202011618658 A CN202011618658 A CN 202011618658A CN 112623026 A CN112623026 A CN 112623026A
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- steering
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- working oil
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/07—Supply of pressurised fluid for steering also supplying other consumers ; control thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G17/00—Resilient suspensions having means for adjusting the spring or vibration-damper characteristics, for regulating the distance between a supporting surface and a sprung part of vehicle or for locking suspension during use to meet varying vehicular or surface conditions, e.g. due to speed or load
- B60G17/06—Characteristics of dampers, e.g. mechanical dampers
- B60G17/08—Characteristics of fluid dampers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2500/00—Indexing codes relating to the regulated action or device
- B60G2500/30—Height or ground clearance
Abstract
The present disclosure relates to a steering and suspension adjustment combined system and an engineering vehicle, wherein the steering and suspension adjustment combined system includes: a steering wheel; the full hydraulic steering gear is connected with the steering wheel in a torque-transferring manner and is provided with a right-turning working oil port and a left-turning working oil port; the steering system comprises a steering wheel and a steering oil cylinder for controlling the steering wheel to rotate; and the suspension system comprises at least two suspension oil cylinders and at least two energy accumulators, the energy accumulators are communicated with the right-turn working oil port and the left-turn working oil port in a controllable on-off manner, and a rod cavity and a rodless cavity of each suspension oil cylinder are respectively communicated with two different energy accumulators. The suspension adjusting system and the steering system which are realized by the embodiment of the disclosure provide power oil through the same full hydraulic steering gear, share of hydraulic oil sources is realized, and the hydraulic oil sources are mutually independent and do not interfere with each other, so that the complexity of the hydraulic system is reduced, the use cost of a vehicle is reduced, and the failure rate is reduced.
Description
Technical Field
The disclosure relates to a steering and suspension adjustment compound system and an engineering vehicle.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
In an engineering vehicle, a steering system is generally connected between a steering wheel and a steering axle through a full hydraulic steering gear, and the steering system assists the steering operation of a driver, wherein the full hydraulic steering gear drives a steering oil cylinder in the steering axle through hydraulic pressure. The suspension system is supported between the vehicle body and the vehicle frame and is used for transmitting the force and the moment of the wheels and the vehicle frame, alleviating the impact generated by the running of the wheels and attenuating the vibration of the bearing system.
For engineering vehicles, as the loads are large and the driving road conditions are complex, the suspension system of the engineering vehicle mostly uses an oil-gas suspension to utilize the advantages of good buffer capacity, vibration reduction, adjustable frame height and the like. The hydro-pneumatic suspension has the variable stiffness characteristic, so that the vehicle can be guaranteed to have good running smoothness, particularly, road conditions and loading conditions of the vehicle for construction sites and mines are severe, and after the hydro-pneumatic suspension is adopted, impact can be relieved remarkably, jolt is reduced, the labor condition of a driver is improved, and the average speed is increased. The oil quantity of the working cavity of the cylinder barrel and the inflation pressure of the air chamber are changed, so that different variable stiffness characteristics can be obtained, and the main parts of the hydro-pneumatic spring can be commonly used on automobiles with different tonnages.
The steering system and the suspension system of the traditional engineering vehicle need to be powered by different hydraulic pumps, are relatively independent, have relatively complex structures and are relatively high in use cost.
Disclosure of Invention
One technical problem to be solved by the present disclosure is: the utility model provides a turn to and suspension adjusts combined system and engineering vehicle, can simplify the structure, reduce use cost and fault rate.
A compound steering and suspension adjustment system is provided according to some embodiments of the present disclosure, comprising: a steering wheel; the full hydraulic steering gear is connected with the steering wheel in a torque-transmitting manner and is provided with a right-turning working oil port and a left-turning working oil port, and the steering of the steering wheel is configured to control the flow direction of hydraulic oil of the right-turning working oil port and the left-turning working oil port; the steering system comprises a steering wheel and a steering oil cylinder for controlling the steering wheel to turn, wherein a rod cavity and a rodless cavity of the steering oil cylinder are respectively communicated with a right-turn working oil port and a left-turn working oil port; and the suspension system comprises at least two suspension oil cylinders and at least two energy accumulators, the energy accumulators are communicated with the right-turn working oil port and the left-turn working oil port in a controllable on-off manner, and a rod cavity and a rodless cavity of each suspension oil cylinder are respectively communicated with two different energy accumulators.
In some embodiments, the at least two accumulators includes a first accumulator and a second accumulator, and the at least two suspension cylinders include: the rod cavity of the first suspension oil cylinder is communicated with the first energy accumulator, and the rodless cavity of the first suspension oil cylinder is communicated with the second energy accumulator; and the rod cavity of the second suspension oil cylinder is communicated with the second energy accumulator, and the rodless cavity of the second suspension oil cylinder is communicated with the first energy accumulator.
In some embodiments, the suspension system further comprises: the first electric control valve is controllably arranged between the first energy accumulator and the right-turning working oil port in an on-off manner; the second electric control valve is controllably arranged between the first energy accumulator and the left-turning working oil port in an on-off manner; the third electric control valve is controllably arranged between the second energy accumulator and the right-turning working oil port in an on-off manner; and the fourth electric control valve is controllably arranged between the second energy accumulator and the left-turning working oil port in an on-off manner.
In some embodiments, the at least two accumulators further comprise a third accumulator and a fourth accumulator, the at least two suspension cylinders further comprising: a rod cavity of the third suspension oil cylinder is communicated with the third energy accumulator, and a rodless cavity of the third suspension oil cylinder is communicated with the fourth energy accumulator; and the rod cavity of the fourth suspension oil cylinder is communicated with the fourth energy accumulator, and the rodless cavity of the fourth suspension oil cylinder is communicated with the third energy accumulator.
In some embodiments, the suspension system further comprises: the fifth electric control valve is controllably arranged between the third energy accumulator and the left-turning working oil port in an on-off manner; the sixth electric control valve is controllably arranged between the third energy accumulator and the right-turning working oil port in an on-off manner; the seventh electric control valve is controllably arranged between the fourth energy accumulator and the left-turning working oil port in an on-off manner; and the eighth electric control valve is controllably arranged between the fourth energy accumulator and the right-turning working oil port in an on-off manner.
In some embodiments, the steering system further comprises: a steering axle; the first steering oil cylinder is provided with a rod cavity communicated with the right-turning working oil port, and a rodless cavity communicated with the left-turning working oil port; the rodless cavity of the second steering oil cylinder is communicated with the right-turn working oil port, and the rod cavity of the second steering oil cylinder is communicated with the left-turn working oil port; the cylinder barrels of the first steering oil cylinder and the second steering oil cylinder are fixedly arranged on a steering axle, and cylinder rods are used for driving the steering wheels to steer.
In some embodiments, the steering system further comprises: the first steering control valve is controllably opened and closed and arranged at the outlet of the left-turning working oil port and is used for synchronously controlling the opening and closing of oil supply to the rodless cavity of the first steering oil cylinder and the rod cavity of the second steering oil cylinder; and the second steering control valve is controllably connected and disconnected with the outlet of the right-turning working oil port and is used for synchronously controlling the connection and disconnection of oil supply to the rod cavity of the first steering oil cylinder and the rodless cavity of the second steering oil cylinder.
In some embodiments, the full hydraulic steering gear is further provided with an oil return port and a pressure oil port, and the steering and suspension adjustment compound system further comprises: an oil tank; the filter is arranged between the oil return port and the oil tank; and the hydraulic pump is driven by the motor and is arranged between the pressure oil port and the oil tank.
In some embodiments, one of the right-turn working port and the left-turn working port is in communication with the oil return port.
According to some embodiments of the disclosure, an engineering vehicle is provided, which comprises the steering and suspension adjustment compound system.
Therefore, according to the embodiment of the disclosure, the suspension adjusting system and the steering system both provide power oil through the same full hydraulic steering gear, so that the sharing of a hydraulic oil source is realized, and the hydraulic oil source is independent and does not interfere with each other, thereby reducing the complexity of the hydraulic system and the use cost and the failure rate of a vehicle.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic block diagram of some embodiments of a compound steering and suspension adjustment system according to the present disclosure.
Description of the reference numerals
1. A steering wheel; 2. a rack and pinion mechanism; 3. a full hydraulic steering gear; 4. a first steering control valve; 41. a second steering control valve; 5. a steering axle; 51. a first steering cylinder; 52. a second steering cylinder; 53. a steering wheel; 6. a first accumulator; 61. a second accumulator; 62. a third accumulator; 63. a fourth accumulator; 7. a first suspension cylinder; 71. a second suspension cylinder; 72. a third suspension cylinder; 73. a fourth suspension cylinder; 8. a first electrically controlled valve; 81. a second electrically controlled valve; 82. a third electrically controlled valve; 83. a fourth electrically controlled valve; 84. a fifth electrically controlled valve; 85. a sixth electrically controlled valve; 86. a seventh electrically controlled valve; 87. an eighth electrically controlled valve; 9. a filter; 10. an oil tank; 11. a motor; 12. a hydraulic pump.
Detailed Description
Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.
The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be intervening devices between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, the particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.
All terms used in the present disclosure have the same meaning as understood by one of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
In order to reduce the use cost of a vehicle, the disclosure provides a full hydraulic power-assisted steering and suspension adjusting composite system, wherein the lifting and steering system of an oil-gas suspension system is powered by a full hydraulic steering gear.
As shown in fig. 1, a fully hydraulic power steering and suspension adjustment compound system provided according to some embodiments of the present disclosure includes a steering wheel 1, a rack and pinion mechanism 2, a fully hydraulic steering 3, a steering system, and a suspension system. The full hydraulic steering gear 3 is connected with the steering wheel 1 through the rack and pinion mechanism 2 in a torque-transferring manner, and is provided with a right-turning working oil port R and a left-turning working oil port L, and the steering of the steering wheel 1 is configured to control the flow direction of hydraulic oil of the right-turning working oil port R and the left-turning working oil port L.
The full hydraulic steering gear 3 is used as an oil supply basis, the steering system comprises a steering wheel 53 and a steering oil cylinder for controlling the steering wheel 53 to turn, and a rod cavity and a rodless cavity of the steering oil cylinder are respectively communicated with a right-turn working oil port and a left-turn working oil port; the suspension system comprises at least two suspension oil cylinders and at least two energy accumulators, the energy accumulators are communicated with the right-turning working oil port R and the left-turning working oil port L in a controllable on-off mode, and a rod cavity and a rodless cavity of each suspension oil cylinder are respectively communicated with two different energy accumulators.
Therefore, the steering system and the suspension system share the oil source and provide power through the full hydraulic steering gear 3, the suspension does not need to be independently provided with the oil source any more, and the use cost of the vehicle is greatly reduced.
In some embodiments, when only two suspension cylinders need to be provided in the present disclosure, for example, only two suspension cylinders need to be provided for the axle of the front wheels, or only two suspension cylinders need to be provided for the axle of the rear wheels, the number of accumulators is also two correspondingly, and includes the first accumulator 6 and the second accumulator 61. The at least two suspension oil cylinders comprise a first suspension oil cylinder 7 and a second suspension oil cylinder 71, wherein a rod cavity of the first suspension oil cylinder 7 is communicated with the first energy accumulator 6, and a rodless cavity is communicated with the second energy accumulator 61; the rod chamber of the second suspension cylinder 71 is connected to the second accumulator 61 and the rodless chamber is connected to the first accumulator 6.
To control the charging and discharging of first and second accumulators 6, 61, in some embodiments, the suspension system further includes a first electrically controlled valve 8, a second electrically controlled valve 81, a third electrically controlled valve 82, and a fourth electrically controlled valve 83, as shown in fig. 1.
The first electric control valve 8 is controllably arranged between the first energy accumulator 6 and the right-turning working oil port R; the second electric control valve 81 is controllably arranged between the first energy accumulator 6 and the left-turning working oil port L; the third electric control valve 82 is controllably opened and closed between the second energy accumulator 61 and the right-turning working oil port R; and the fourth electric control valve 83 is controllably opened and closed between the second accumulator 61 and the left-turning working port L.
Thus, for the first accumulator 6:
the first electric control valve 8 is powered on, the first energy accumulator 6 is communicated with the right-turning working oil port R of the full-hydraulic steering gear, meanwhile, the second electric control valve 81 is powered off, and the first energy accumulator 6 is disconnected with the left-turning working oil port L of the full-hydraulic steering gear. When the steering wheel 1 turns right, a right-turning working oil port R of the full hydraulic steering gear 3 generates high pressure, and the high-pressure oil enters the first energy accumulator 6 through the first electric control valve 8 to realize oil charging of the first energy accumulator 6; at this time, when the steering wheel 1 turns left, the right-turning working oil port L of the full hydraulic steering gear 3 generates low pressure, and the high-pressure oil of the first energy accumulator 6 returns to the oil tank 10 through the first electric control valve 8 and the full hydraulic steering gear 3, so that the oil discharging function of the first energy accumulator 6 is realized.
The first electric control valve 8 is powered off, the first energy accumulator 6 is disconnected with the right-turning working oil port R of the full-hydraulic steering gear, meanwhile, the second electric control valve 81 is powered on, and the first energy accumulator 6 is communicated with the left-turning working oil port L of the full-hydraulic steering gear. At the moment, when the steering wheel 1 turns right, the left-turning working oil port L of the full hydraulic steering gear 3 generates low pressure, and high-pressure oil of the first energy accumulator 6 returns to the oil tank 10 through the second electric control valve 81 and the full hydraulic steering gear 3, so that the oil discharging function of the first energy accumulator 6 is realized; at this time, when the steering wheel 1 turns left, the left-turning working oil port L of the full hydraulic steering gear 3 generates high pressure, and the high pressure oil enters the first energy accumulator 6 through the second electric control valve 81, so that the first energy accumulator 6 is filled with oil.
For the second accumulator 61:
the third electric control valve 82 is powered on, the second energy accumulator 61 is communicated with the right-turning working oil port R of the full-hydraulic steering gear, meanwhile, the fourth electric control valve 83 is powered off, and the second energy accumulator 61 is disconnected with the left-turning working oil port L of the full-hydraulic steering gear. At this time, when the steering wheel 1 turns right, a right-turning working oil port of the full hydraulic steering gear 3 generates high pressure, and the high-pressure oil enters the second energy accumulator 61 through the third electric control valve 82, so that the second energy accumulator 61 is filled with oil; at this time, when the steering wheel 1 turns left, the right-turn working oil port R of the full hydraulic steering gear 3 generates low pressure, and the high-pressure oil of the second energy accumulator 61 returns to the oil tank 10 through the third electric control valve 82 and the full hydraulic steering gear 3, thereby realizing the oil discharge function of the second energy accumulator 61.
The third electric control valve 82 is powered off, the second energy accumulator 61 is disconnected with the right-turning working oil port R of the full-hydraulic steering gear, meanwhile, the fourth electric control valve 83 is powered on, and the second energy accumulator 61 is communicated with the left-turning working oil port L of the full-hydraulic steering gear. At this time, when the steering wheel 1 turns right, the left-turning working oil port L of the full hydraulic steering gear 3 generates low pressure, and the high-pressure oil of the second energy accumulator 61 returns to the oil tank 10 through the fourth electric control valve 83 and the full hydraulic steering gear 3, so that the oil discharging function of the second energy accumulator 61 is realized; at this time, when the steering wheel 1 turns left, the left-turning working oil port L of the full hydraulic steering gear 3 generates high pressure, and the high pressure oil enters the second energy accumulator 61 through the fourth electric control valve 83, so that the second energy accumulator 61 is filled with oil.
In some embodiments, when the suspension cylinders in the present disclosure need only be provided in four, a third suspension cylinder 72 and a fourth suspension cylinder 73 are included in addition to the first suspension cylinder 7 and the second suspension cylinder 71 described above to be provided at the front and rear axles of the vehicle, respectively. At this time, the at least two accumulators further include a third accumulator 62 and a fourth accumulator 63.
Wherein the rod cavity of the third suspension cylinder 72 is communicated with the third accumulator 62, and the rodless cavity is communicated with the fourth accumulator 63; and the rod chamber of the fourth suspension cylinder 73 is connected to the fourth accumulator 63 and the rodless chamber is connected to the third accumulator 62.
To control the charging and discharging of third and fourth accumulators 62, 63, in some embodiments, the suspension system further includes a fifth, sixth, seventh, and eighth electrically controlled valves 84, 85, 86, 87, as shown in fig. 1.
The fifth electric control valve 84 is controllably opened and closed between the third accumulator 62 and the left-turning working oil port L; the sixth electric control valve 85 is controllably arranged between the third energy accumulator 62 and the right-turning working oil port R; the seventh electric control valve 86 is controllably opened and closed between the fourth energy accumulator 63 and the left-turning working oil port L; and the eighth electrically controlled valve 87 is controllably opened and closed between the fourth accumulator 63 and the right-turn hydraulic fluid port R.
For the third accumulator 62:
the sixth electronic control valve 85 is powered on, the third energy accumulator 62 is communicated with the right-turn working oil port R of the full-hydraulic steering gear, meanwhile, the fifth electronic control valve 84 is powered off, and the third energy accumulator 62 is disconnected with the left-turn working oil port L of the full-hydraulic steering gear. At this time, when the steering wheel 1 turns right, a right-turning working oil port of the full hydraulic steering gear 3 generates high pressure, and the high-pressure oil enters the third energy accumulator 62 through the sixth electric control valve 85, so that oil is filled in the third energy accumulator 62; at this time, when the steering wheel 1 turns left, the right-turn working oil port R of the full hydraulic steering gear 3 generates low pressure, and the high-pressure oil of the third energy accumulator 62 returns to the oil tank 10 through the sixth electric control valve 85 and the full hydraulic steering gear 3, thereby realizing the oil discharge function of the third energy accumulator 62.
The sixth electric control valve 85 is powered off, the third energy accumulator 62 is disconnected with the right-turning working oil port R of the full-hydraulic steering gear, meanwhile, the fifth electric control valve 84 is powered on, and the third energy accumulator 62 is communicated with the left-turning working oil port L of the full-hydraulic steering gear. At this time, when the steering wheel 1 turns right, the left-turning working oil port L of the full hydraulic steering gear 3 generates low pressure, and the high-pressure oil of the third energy accumulator 62 returns to the oil tank 10 through the fifth electric control valve 84 and the full hydraulic steering gear 3, so that the oil discharging function of the third energy accumulator 62 is realized; at this time, when the steering wheel 1 turns left, the left-turning working oil port L of the full hydraulic steering gear 3 generates high pressure, and the high-pressure oil enters the third energy accumulator 62 through the fifth electric control valve 84, so that the oil charging of the third energy accumulator 62 is realized.
For the fourth accumulator 63:
the eighth electric control valve 87 is powered on, the fourth energy accumulator 63 is communicated with the right-turning working oil port R of the full-hydraulic steering gear, meanwhile, the seventh electric control valve 86 is powered off, and the fourth energy accumulator 63 is disconnected with the left-turning working oil port L of the full-hydraulic steering gear. At this time, when the steering wheel 1 turns right, the right-turning working oil port R of the full hydraulic steering gear 3 generates high pressure, and the high-pressure oil enters the fourth energy accumulator 63 through the eighth electric control valve 87, so that the fourth energy accumulator 63 is filled with oil; at this time, when the steering wheel 1 turns left, the right-turn working oil port R of the full hydraulic steering gear 3 generates low pressure, and the high-pressure oil of the fourth energy accumulator 63 returns to the oil tank 10 through the eighth electric control valve 87 and the full hydraulic steering gear 3, thereby realizing the oil discharge function of the fourth energy accumulator 63.
The eighth electric control valve 87 is powered off, the fourth energy accumulator 63 is disconnected with the right-turning working oil port R of the full-hydraulic steering gear, meanwhile, the seventh electric control valve 86 is powered on, and the fourth energy accumulator 63 is communicated with the left-turning working oil port L of the full-hydraulic steering gear. At this time, when the steering wheel 1 turns right, the left-turning working oil port L of the full hydraulic steering gear 3 generates low pressure, and high-pressure oil of the fourth energy accumulator 63 returns to the oil tank 10 through the seventh electric control valve 86 and the full hydraulic steering gear 3, so that the oil discharging function of the fourth energy accumulator 63 is realized; at this time, when the steering wheel 1 turns left, the left-turning working oil port L of the full hydraulic steering gear 3 generates high pressure, and the high pressure oil enters the fourth energy accumulator 63 through the seventh electric control valve 86, so that the fourth energy accumulator 63 is filled with oil.
Based on the control action of the first to eighth electric control valves 8 to 87, the steering and suspension can share the oil source, and are independent and not interfered with each other. In other embodiments, the electrically controlled valve comprises a two-position two-way solenoid valve, a two-position three-way solenoid valve, a three-position two-way solenoid valve, a three-position three-way solenoid valve, a three-position four-way solenoid valve, or a manual switching valve.
In some embodiments, as shown in fig. 1, the steering system includes a steering axle 5, a first steering cylinder 51, and a second steering cylinder 52. Wherein the rod chamber of the first steering cylinder 51 is communicated with the right-turn working oil port R, and the rodless chamber is communicated with the left-turn working oil port L; a rodless cavity of the second steering cylinder 52 is communicated with the right-turn working oil port R, and a rod cavity is communicated with the left-turn working oil port L; the cylinder barrels of the first steering cylinder 51 and the second steering cylinder 52 are fixed to the steering axle 5, and the cylinder rods drive the steering wheels 53 to steer.
In order to control the on/off of the oil supply to the first and second steering cylinders 51 and 52, in some embodiments, as shown in fig. 1, the steering system further includes a first steering control valve 4 and a second steering control valve 41.
The first steering control valve 4 is controllably opened and closed at the outlet of the left-turning working oil port L and is used for synchronously controlling the opening and closing of oil supply to a rodless cavity of the first steering oil cylinder 51 and a rod cavity of the second steering oil cylinder 52; the second steering control valve 41 is controllably opened and closed at the outlet of the right-hand-turning working port R, and is used for synchronously controlling the opening and closing of oil supply to the rod chamber of the first steering cylinder 51 and the rodless chamber of the second steering cylinder 52.
Therefore, when the suspension system works, the first steering control valve 4 and the second steering control valve 41 are controlled to cut off the oil way, the lifting speed of the suspension system can be controlled by the rotating speed of the full hydraulic steering gear 3, and the suspension control can be more accurate. In other embodiments, the first 4 and second 41 steering control valves are replaced by two-position, four-way solenoid valves or other solenoid valves.
In order to supply oil to the full hydraulic steering gear 3, in some embodiments, as shown in fig. 1, the full hydraulic steering gear 3 is further provided with an oil return port T and a pressure port P, and the steering and suspension adjustment complex system further comprises an oil tank 10, a filter 9 and a hydraulic pump 12. The filter 9 is arranged between the oil return port T and the oil tank 10; the hydraulic pump 12 is driven by the motor 11 and is disposed between the pressure port P and the oil tank 10.
In some embodiments, as shown in fig. 1, one of the right-turn working port R and the left-turn working port L communicates with the oil return port T. Namely, the working oil port M or the working oil port N connecting the suspension system with the right-turn working oil port R or the left-turn working oil port L is directly communicated with the oil return port T of the full hydraulic steering gear 3.
According to some embodiments of the disclosure, a work vehicle is provided, which includes any one of the steering and suspension adjustment compound systems. The engineering vehicle correspondingly has the beneficial technical effects.
Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (10)
1. A compound steering and suspension adjustment system, comprising:
a steering wheel (1);
the full hydraulic steering gear (3) is connected with the steering wheel (1) in a torque-transmitting manner and is provided with a right-turning working oil port and a left-turning working oil port, and the steering of the steering wheel (1) is configured to control the flow direction of hydraulic oil of the right-turning working oil port (R) and the left-turning working oil port (L);
the steering system comprises a steering wheel (53) and a steering oil cylinder for controlling the steering angle of the steering wheel (53), wherein a rod cavity and a rodless cavity of the steering oil cylinder are respectively communicated with the right-turning working oil port (R) and the left-turning working oil port (L); and
the suspension system comprises at least two suspension oil cylinders and at least two energy accumulators, the energy accumulators are communicated with the right-turning working oil port (R) and the left-turning working oil port (L) in a controllable on-off mode, and a rod cavity and a rodless cavity of each suspension oil cylinder are respectively communicated with two different energy accumulators.
2. The steering and suspension adjustment compound system according to claim 1, characterized in that at least two of said accumulators comprise a first accumulator (6) and a second accumulator (61), at least two of said suspension cylinders comprising:
the rod cavity of the first suspension oil cylinder (7) is communicated with the first energy accumulator (6), and the rodless cavity of the first suspension oil cylinder is communicated with the second energy accumulator (61); and
and the rod cavity of the second suspension oil cylinder (71) is communicated with the second energy accumulator (61), and the rodless cavity of the second suspension oil cylinder is communicated with the first energy accumulator (6).
3. The compound steering and suspension adjustment system according to claim 2, wherein the suspension system further comprises:
the first electric control valve (8) is controllably arranged between the first energy accumulator (6) and the right-turning working oil port (R) in an on-off manner;
the second electric control valve (81) is controllably arranged between the first energy accumulator (6) and the left-turning working oil port (L) in an on-off manner;
the third electric control valve (82) is controllably arranged between the second energy accumulator (61) and the right-turning working oil port (R) in an on-off manner; and
and the fourth electric control valve (83) is controllably arranged between the second energy accumulator (61) and the left-turning working oil port (L) in an on-off manner.
4. The steering and suspension adjustment compound system according to claim 2, characterized in that at least two of said accumulators further comprise a third accumulator (62) and a fourth accumulator (63), at least two of said suspension cylinders further comprising:
a third suspension cylinder (72) having a rod chamber in communication with the third accumulator (62) and a rodless chamber in communication with the fourth accumulator (63); and
and the rod cavity of the fourth suspension oil cylinder (73) is communicated with the fourth energy accumulator (63), and the rodless cavity of the fourth suspension oil cylinder is communicated with the third energy accumulator (62).
5. The compound steering and suspension adjustment system according to claim 4, wherein the suspension system further comprises:
the fifth electric control valve (84) is controllably arranged between the third energy accumulator (62) and the left-turning working oil port (L) in an on-off manner;
the sixth electric control valve (85) is controllably arranged between the third energy accumulator (62) and the right-turning working oil port (R) in an on-off manner;
the seventh electric control valve (86) is controllably arranged between the fourth energy accumulator (63) and the left-turning working oil port (L) in an on-off manner; and
and the eighth electric control valve (87) is controllably arranged between the fourth energy accumulator (63) and the right-turning working oil port (R) in an on-off manner.
6. The steering and suspension adjustment compound system of claim 1, further comprising:
a steering axle (5);
a first steering oil cylinder (51) with a rod cavity communicated with the right-turning working oil port (R) and a rodless cavity communicated with the left-turning working oil port (L); and
a second steering cylinder (52), a rodless cavity of which is communicated with the right-turn working oil port (R), and a rod cavity of which is communicated with the left-turn working oil port (L);
the cylinder barrels of the first steering oil cylinder (51) and the second steering oil cylinder (52) are fixedly arranged on the steering axle (5), and the cylinder rods are used for driving the steering wheels (53) to steer.
7. The steering and suspension adjustment compound system of claim 6, further comprising:
the first steering control valve (4) is controllably opened and closed and arranged at the outlet of the left-turning working oil port (L) and is used for synchronously controlling the opening and closing of oil supply to a rodless cavity of the first steering oil cylinder (51) and a rod cavity of the second steering oil cylinder (52); and
and the second steering control valve (41) is controllably opened and closed and is arranged at the outlet of the right-turning working oil port (R) and used for synchronously controlling the opening and closing of oil supply to the rod cavity of the first steering oil cylinder (51) and the rodless cavity of the second steering oil cylinder (52).
8. The combined steering and suspension adjustment system according to claim 1, characterized in that said full hydraulic steering gear (3) is further provided with an oil return port (T) and a pressure oil port (P), said combined steering and suspension adjustment system further comprising:
a fuel tank (10);
the filter (9) is arranged between the oil return port (T) and the oil tank (10); and
and a hydraulic pump (12) driven by a motor (11) and disposed between the pressure port (P) and the oil tank (10).
9. The combined steering and suspension adjustment system according to claim 8, characterized in that one of said right-turn working oil port (R) and said left-turn working oil port (L) is in communication with said oil return port (T).
10. A work vehicle comprising a combined steering and suspension adjustment system according to any one of claims 1 to 9.
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| CN113232719A (en) * | 2021-06-24 | 2021-08-10 | 上海三一重机股份有限公司 | Steering system and loader |
| CN115139725A (en) * | 2022-09-06 | 2022-10-04 | 万向钱潮股份公司 | Hydraulic active suspension system |
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| CN112623026B (en) | 2022-08-02 |
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