A multi-wheel suspension control system

Abstract

The invention discloses a multi-wheel suspension control system, comprising: at least one single-wheel suspension cylinder hydraulic system (1), an electrical control system (2), an oil inlet pressure sensor (3), an oil inlet accumulator (4) and a platform level sensor (5); the single-wheel suspension cylinder hydraulic system (1), the oil inlet pressure sensor (3) and the platform level sensor (5) are electrically connected to the electrical control system (2); the oil inlet accumulator (4) is arranged on a pipeline loop between a pressure oil inlet and the single-wheel suspension cylinder hydraulic system (1). The invention collects data in real time through detection by the electrical control system, performs real-time control calculation, and adjusts the extension distance of each wheel suspension cylinder, thereby preventing large and heavy equipment from tilting or vibrating due to road conditions during transportation, thereby damaging the equipment; the safety of transportation is greatly improved, while ensuring the transportation requirements of the transported parts.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle suspension, and in particular to a multi-wheel suspension control system. Background Art

[0002] At present, my country has high requirements for the safety of heavy structural equipment transportation in narrow test sites. However, due to the large size and weight of the transportation equipment and the uneven road surface of the transportation site, large and heavy equipment often tilts and vibrates due to road conditions during operation, thereby damaging the equipment. Therefore, how to achieve smooth operation of equipment transportation machines on uneven roads is an urgent problem that needs to be solved.

[0003] The existing technical solutions are mainly aimed at the suspension system of the transfer device. The suspension system is a combination of all devices connecting the body and the wheels. Cushioning and vibration reduction are its main functions. The existing technology realizes adaptive adjustment of the suspension through hydraulic system and electrical system, and transmits road information through sensors to adjust the height of the suspension to adapt to different road surfaces and achieve the purpose of smooth transportation.

[0004] A utility model patent with patent number CN203318080U discloses a hydro-pneumatic suspension device that can realize adaptive adjustment of the suspension. However, this solution cannot meet the higher technical requirements of the hydro-pneumatic suspension in terms of structure and flexible control. Summary of the invention

[0005] The main purpose of the present invention is to provide a multi-wheel suspension control system, aiming to solve the problem that equipment transport machines may be tilted or vibrated due to road conditions, thereby causing equipment damage.

[0006] To achieve the above-mentioned objectives, the present invention proposes a multi-wheel suspension control system, comprising: at least one single-wheel suspension cylinder hydraulic system, an electrical control system, an oil inlet pressure sensor, an oil inlet accumulator and a platform level sensor; the single-wheel suspension cylinder hydraulic system, the oil inlet pressure sensor and the platform level sensor are electronically connected to the electrical control system; the oil inlet accumulator is arranged on the pipeline loop between the pressure oil inlet and the single-wheel suspension cylinder hydraulic system.

[0007] Preferably, the single-wheel suspension cylinder hydraulic system includes a suspension cylinder, a linear displacement sensor, a suspension cylinder rodless chamber hydraulic control valve group, a suspension cylinder rod chamber hydraulic control valve group and a suspension cylinder rod chamber accumulator; the suspension cylinder is connected to the linear displacement sensor; the suspension cylinder rodless chamber and the pressure oil inlet are connected via a first circuit pipeline; the suspension cylinder rod chamber and the pressure oil inlet are connected via a second circuit pipeline; the suspension cylinder rod chamber accumulator and the pressure oil inlet are connected via a third circuit pipeline; the suspension cylinder rodless chamber hydraulic control valve group is arranged on the first circuit pipeline; the suspension cylinder rod chamber hydraulic control valve group is arranged at the intersection of the second circuit pipeline and the third circuit pipeline to control the inflow and outflow of oil in the suspension cylinder rod chamber and the suspension cylinder rod chamber accumulator.

[0008] Preferably, the suspension cylinder rodless chamber hydraulic control valve group includes a high-precision proportional reversing valve, a normally closed leakage-free electromagnetic ball valve, a suspension cylinder rodless chamber pressure sensor, a normally open leakage-free electromagnetic ball valve, a suspension cylinder accumulator, a safety valve and a manual ball valve; the high-precision proportional reversing valve, the normally closed leakage-free electromagnetic ball valve and the normally open leakage-free electromagnetic ball valve are arranged in series on the first circuit pipeline; a fourth circuit pipeline is also arranged between the suspension cylinder rodless chamber and the pressure oil inlet; the safety valve and the manual ball valve are respectively arranged in the first parallel branch and the second parallel branch on the fourth circuit pipeline; the suspension cylinder rodless chamber pressure sensor, the suspension cylinder accumulator and the parallel ends of the safety valve and the manual ball valve are arranged in the fourth circuit pipeline in sequence.

[0009] Preferably, the suspension cylinder rod chamber hydraulic control valve group includes a suspension cylinder rod chamber pressure sensor and a pressure reducing valve; the pressure reducing valve is arranged on the second loop pipeline; the suspension cylinder rod chamber pressure sensor is arranged on the third loop pipeline.

[0010] Preferably, the third loop pipeline is provided with an accumulator stop valve located between the rod chamber accumulator of the suspension cylinder and the pressure oil inlet.

[0011] Preferably, the single wheel group suspension cylinder hydraulic system is symmetrically placed on both sides.

[0012] Preferably, the single wheel group suspension cylinder hydraulic systems are interconnected.

[0013] In the present invention, by real-time data collection and real-time control calculation through the detection of the electrical control system, the extension distance of the suspension cylinder of each wheel group is adjusted, so that the balance of the vehicle in each state of moving and stationary can be achieved.

[0014] The beneficial effects of the present invention specifically include:

[0015] 1) It can independently and collaboratively control the suspension of each wheel group of the vehicle in real time to maintain the level of the transfer platform;

[0016] 2) It can prevent large and heavy equipment from tilting or vibrating due to road conditions during transportation, thereby preventing damage to the equipment;

[0017] 3) Greatly improve the safety of transfer, while ensuring the transfer requirements of the transfer parts;

[0018] 4) The electrical control system can monitor and control in real time and can adapt to different road conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 An electro-hydraulic schematic diagram of a multi-wheel suspension system based on an electrical system proposed by the present invention;

[0020] Figure 2 This is the hydraulic principle diagram of the suspension cylinder proposed by the present invention.

[0021] Description of Figure Numbers:

[0022] 1- Single wheel suspension cylinder hydraulic system, 2- Electrical control system, 3- Oil inlet pressure sensor, 4- Oil inlet accumulator, 5- Platform level sensor, 6- Suspension cylinder, 7- Linear displacement sensor, 8- Suspension cylinder rodless chamber hydraulic control valve group, 9- Suspension cylinder rod chamber hydraulic control valve group, 10- Suspension cylinder rod chamber accumulator, 11- High-precision proportional reversing valve, 12- Normally closed leakage-free electromagnetic ball valve, 13- Suspension cylinder rodless chamber pressure sensor, 14- Normally open leakage-free electromagnetic ball valve, 15- Suspension cylinder accumulator, 16- Safety valve, 17- Manual ball valve, 18- Suspension cylinder rod chamber pressure sensor, 19- Pressure reducing valve, 20- Accumulator stop valve. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] The present invention proposes an embodiment, referring to Figure 1 , Figure 1 An electro-hydraulic schematic diagram of a multi-wheel suspension system based on an electrical system proposed in the present invention.

[0025] like Figure 1 As shown, in this embodiment, a multi-wheel suspension control system mainly includes a single-wheel suspension cylinder hydraulic system 1, an electrical control system 2, an oil inlet pressure sensor 3, an oil inlet accumulator 4 and a platform level sensor 5.

[0026] The single-wheel suspension cylinder hydraulic system 1, the oil inlet pressure sensor 3 and the platform level sensor 5 are electronically connected to the electrical control system 2; the oil inlet accumulator 4 is arranged on the pipeline loop between the pressure oil inlet and the single-wheel suspension cylinder hydraulic system 1.

[0027] like Figure 2 As shown, the hydraulic principle diagram of the suspension cylinder proposed in this embodiment mainly includes a suspension cylinder 6, a linear displacement sensor 7, a suspension cylinder rodless chamber hydraulic control valve group 8, a suspension cylinder rod chamber hydraulic control valve group 9, a suspension cylinder rod chamber accumulator 10, a high-precision proportional reversing valve 11, a normally closed non-leakage electromagnetic ball valve 12, a suspension cylinder rodless chamber pressure sensor 13, a normally open non-leakage electromagnetic ball valve 14, a suspension cylinder accumulator 15, a safety valve 16, a manual ball valve 17, a suspension cylinder rod chamber pressure sensor 18, a pressure reducing valve 19 and an accumulator stop valve 20.

[0028] The action of the suspension cylinder 6 is controlled by the rod chamber hydraulic control component and the rodless chamber hydraulic control component of the suspension cylinder 6. By receiving the command signal after the operation of the electrical control system 2, the extension and retraction of the cylinder are executed. The suspension cylinder 6 is equipped with a built-in displacement sensor to provide real-time feedback of the movement position of the cylinder. The hydraulic control components of the rod chamber and the rodless chamber of the suspension cylinder 6 are equipped with pressure sensors to provide real-time feedback of the hydraulic pressure conditions of the two chambers of the suspension cylinder.

[0029] One oil circuit of the pressure oil receives the command from the electrical control system 2 through the high-precision proportional reversing valve 11, and the high-precision proportional reversing valve 11 is actuated, and the oil flows through the high-precision proportional reversing valve 11, and the electromagnetic ball valve 12 is often closed without leakage, and enters the rodless chamber of the suspension cylinder 6, and the suspension cylinder 6 extends; another oil circuit of the pressure oil is reduced in pressure through the pressure reducing valve 19, and the oil enters the rod chamber of the suspension cylinder, and at the same time, the oil fills the rod chamber accumulator 10 of the suspension cylinder. At this time, the two chambers of the suspension cylinder 6 are full of oil. Since the pressure of the rod chamber is adjusted to a smaller pressure through the pressure reducing valve 19 and stabilized to a constant pressure through energy storage, a stable back pressure is given to the rod chamber of the suspension cylinder, that is, a constant force is given to the rod chamber of the suspension cylinder. The action of the suspension cylinder 6 depends on the oil in the rodless chamber to be replenished or released, so as to realize the extension or retraction action of the suspension cylinder 6. The position of the suspension cylinder 6 is transmitted to the electrical control system 2 in real time through the linear displacement sensor 7.

[0030] The suspension cylinder accumulator 15 seals the oil in the rodless chamber of the suspension cylinder after the suspension cylinder 6 stops moving by de-energizing the normally closed non-leakage electromagnetic ball valve 12. The suspension cylinder 6 can be fine-tuned based on the oil storage capacity of the suspension cylinder accumulator 15. When the pressure in the rodless chamber of the suspension cylinder increases significantly, the safety valve 16 releases part of the oil in the rodless chamber of the suspension cylinder to protect the suspension cylinder 6. The manual ball valve 17 can manually release the rodless oil in the suspension cylinder for vehicle maintenance. The suspension cylinder rod chamber pressure sensor 18 can display and transmit the pressure of the suspension cylinder rod chamber to the electrical control system 2 in real time. The electrical control system 2 can replenish oil according to the preset value or release oil through the accumulator stop valve 20 to maintain the constant pressure in the rod chamber of the suspension cylinder.

[0031] In this embodiment, a multi-wheel suspension control system is provided, which collects data in real time through detection by an electrical control system, performs real-time control calculations, and adjusts the extension distance of each wheel suspension cylinder to achieve balance of the vehicle in both moving and stationary states.

[0032] The structure, function and connection form disclosed in this article can be realized in other ways. For example, the above-described embodiments are only schematic, such as the pressure sensor and the suspension cylinder rod chamber hydraulic control valve group can be installed in other positions, such as multiple components can be combined or integrated into another component; in addition, each functional component in each embodiment of this article can be integrated into one functional component, or each functional component can exist physically separately, or two or more functional components can be integrated into one functional component.

Claims

1. A multi-wheel suspension control system, characterized in that: include: At least one single-wheel suspension cylinder hydraulic system (1), an electrical control system (2), an oil inlet pressure sensor (3), an oil inlet accumulator (4) and a platform level sensor (5); the single-wheel suspension cylinder hydraulic system (1), the oil inlet pressure sensor (3) and the platform level sensor (5) are electrically connected to the electrical control system (2); the oil inlet accumulator (4) is arranged on a pipeline loop between the pressure oil inlet and the single-wheel suspension cylinder hydraulic system (1); The single wheel suspension cylinder hydraulic system (1) is symmetrically placed on both sides; The single wheel suspension cylinder hydraulic system (1) comprises a suspension cylinder (6), a linear displacement sensor (7), a suspension cylinder rodless chamber hydraulic control valve group (8), a suspension cylinder rod chamber hydraulic control valve group (9) and a suspension cylinder rod chamber accumulator (10); the suspension cylinder (6) is connected to the linear displacement sensor (7); the suspension cylinder rodless chamber and the pressure oil inlet are connected via a first circuit pipeline; the suspension cylinder rod chamber and the pressure oil inlet are connected via a second circuit pipeline; the suspension cylinder rod chamber accumulator (10) and the pressure oil inlet are connected via a third circuit pipeline; the suspension cylinder rodless chamber hydraulic control valve group (8) is arranged on the first circuit pipeline; the suspension cylinder rod chamber hydraulic control valve group (9) is arranged at the intersection of the second circuit pipeline and the third circuit pipeline to control the oil inlet and outlet of the suspension cylinder rod chamber and the suspension cylinder rod chamber accumulator (10); The suspension cylinder rodless chamber hydraulic control valve group (8) comprises a high-precision proportional reversing valve (11), a normally closed non-leakage electromagnetic ball valve (12), a suspension cylinder rodless chamber pressure sensor (13), a normally open non-leakage electromagnetic ball valve (14), a suspension cylinder accumulator (15), a safety valve (16) and a manual ball valve (17); the high-precision proportional reversing valve (11), the normally closed non-leakage electromagnetic ball valve (12) and the normally open non-leakage electromagnetic ball valve (14) are arranged in series on a first circuit pipeline; a fourth circuit pipeline is also arranged between the suspension cylinder rodless chamber and the pressure oil inlet; the safety valve (16) and the manual ball valve (17) are respectively arranged on a first parallel branch and a second parallel branch on the fourth circuit pipeline; the suspension cylinder rodless chamber pressure sensor (13), the suspension cylinder accumulator (15) and the parallel ends of the safety valve (16) and the manual ball valve (17) are arranged in sequence in the fourth circuit pipeline.

2. A multi-wheel suspension control system as claimed in claim 1, characterized in that: The suspension oil cylinder rod chamber hydraulic control valve group (9) comprises a suspension oil cylinder rod chamber pressure sensor (18) and a pressure reducing valve (19); the pressure reducing valve (19) is arranged on the second loop pipeline; the suspension oil cylinder rod chamber pressure sensor (18) is arranged on the third loop pipeline.

3. A multi-wheel suspension control system as claimed in claim 1, characterized in that: The third loop pipeline is provided with an accumulator stop valve (20) located between the rod chamber accumulator (10) of the suspension cylinder and the pressure oil inlet.

4. A multi-wheel suspension control system as claimed in claim 1, characterized in that: The single wheel group suspension cylinder hydraulic systems (1) are interconnected.

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