Air suspension device with hydraulic lifting function and suspension system

Abstract

The utility model discloses an air suspension device with a hydraulic lifting function and a suspension system. The air suspension device comprises an air bag shock absorber, a hydraulic lifting cylinder, a vulcanization assembly and a guide mechanism which are connected. A first bolt structure connected with a vehicle body is formed at one end of the airbag damper, and a second bolt structure connected with the hydraulic lifting cylinder is formed at the other end of the airbag damper; a lifting ring structure is formed at the lower end of the hydraulic lifting cylinder, a vulcanization assembly is arranged in the lifting ring structure, through holes matched with the third bolt structures are formed in the two ends of the vulcanization assembly, blind holes matched with the third bolt structures are formed in one end of the guide mechanism, and one ends of the third bolt structures penetrate through the through holes to be in threaded connection with the blind holes. The guide mechanism is mounted; the other end of the guide mechanism is connected to wheels. The hydraulic and pneumatic control of the air suspension device is realized, so that the advantages of a hydraulic suspension and an air suspension are combined.

Description

Technical Field

[0001] This utility model relates to the field of automotive suspension technology, specifically, to an air suspension device and suspension system with hydraulic lifting function. Background Technology

[0002] Currently, the development trend of automotive suspension is towards comfort, intelligence, active adjustment, and suitability for various vehicle models and usage scenarios. It is mainly divided into hydraulic suspension and air suspension. Hydraulic suspension systems are complex, costly, and offer lower comfort, and are still essentially horizontal coil spring suspensions. Air suspension mainly consists of a control computer, air intake and exhaust ports, pneumatic front and rear shock absorbers, and an air distributor, used to control the vehicle's horizontal attitude and adjust the vehicle's stability system, but its adjustment range is limited and its adjustment speed is slow. Both types of automotive suspension have limitations in their operating conditions.

[0003] Therefore, there is an urgent need for a suspension system that can combine the advantages of hydraulic suspension and air suspension. Utility Model Content

[0004] The purpose of this utility model is to provide an air suspension device and suspension system with hydraulic lifting function, in order to solve the technical problems existing in the prior art of single hydraulic suspension or air suspension, so as to combine the advantages of hydraulic suspension and air suspension.

[0005] The present invention solves the above problems through the following technical solution:

[0006] An air suspension device with hydraulic lifting function includes: a connected airbag shock absorber, a hydraulic lifting cylinder, a vulcanizing assembly, and a guiding mechanism.

[0007] One end of the airbag shock absorber has a first bolt structure for connection to the vehicle body, and the other end has a second bolt structure for connection to the hydraulic lifting cylinder. The lower end of the hydraulic lifting cylinder has a lifting ring structure, which contains a vulcanizing component. Both ends of the vulcanizing component have through holes that mate with the third bolt structure. One end of the guide mechanism has a blind hole that mates with the third bolt structure. One end of the third bolt structure passes through the through hole and is threaded into the blind hole to install the guide mechanism. The other end of the guide mechanism is connected to the wheel.

[0008] As a further improvement, a rubber bushing is provided at the mating position between the lifting ring structure and the vulcanizing component.

[0009] As a further improvement, the guide mechanism is connected to the vulcanizing component at one end with a "U"-shaped groove, which is located between two blind holes to avoid the lifting ring structure.

[0010] As a further improvement, the upper end of the hydraulic lifting cylinder has two mounting holes that mate with the second bolt structure of the airbag shock absorber.

[0011] The present invention solves the above problems through the following technical solution:

[0012] A suspension system includes a controller, four hydropneumatic systems connected to the controller, and a plurality of sensor assemblies; each hydropneumatic system has an air suspension device with hydraulic lifting function as described above, for connection to a wheel respectively.

[0013] As a further improvement, the hydraulic-pneumatic system includes:

[0014] An air supply device consisting of a pneumatic control valve, a cylinder, and an air storage pump;

[0015] A liquid supply device consisting of a hydraulic control valve, a hydraulic cylinder, and a liquid storage pump;

[0016] And air suspension system;

[0017] The air suspension system's airbag shock absorbers are connected to the air pressure control valve of the air supply equipment, and the air suspension system's hydraulic lifting cylinder is connected to the hydraulic control valve of the fluid supply equipment, which is used to adjust the required stiffness and height of the vehicle's four suspensions.

[0018] As a further improvement, the controller is connected to both a pneumatic control valve and a hydraulic control valve.

[0019] As a further improvement, the sensor assembly includes a height sensor, a speed sensor, an acceleration sensor, a weight sensor, an oil temperature sensor, and a barometric pressure sensor.

[0020] As a further improvement, the suspension system also includes adjustable damping electronically controlled shock absorbers connected to the controller, arranged side-by-side with the airbag shock absorbers and hydraulic lifting cylinders.

[0021] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0022] (1) Combining the advantages of hydraulic suspension and air suspension, it has the advantages of quick adjustment, high comfort, simple system and low cost;

[0023] (2) The airbag shock absorber mainly meets the comfort function by adjusting the stiffness; the hydraulic lifting cylinder adopts a single hydraulic cylinder to achieve rapid lifting, height locking, foundation damping and rapid response.

[0024] (3) Electronically controlled shock absorbers achieve higher comfort requirements through adjustable damping;

[0025] (4) Simple connection, suitable for suspensions with different guiding mechanisms. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an air suspension device with hydraulic lifting function according to the present invention;

[0027] Figure 2 This is an exploded schematic diagram of an air suspension device with hydraulic lifting function according to the present invention;

[0028] Figure 3 This is a schematic diagram of a suspension system according to the present invention.

[0029] Reference numerals: 1. Airbag shock absorber; 11. First bolt structure; 12. Second bolt structure; 13. Air pressure control valve; 14. Cylinder; 15. Air storage pump; 2. Hydraulic lifting cylinder; 21. Lifting ring structure; 22. Hydraulic control valve; 23. Oil cylinder; 24. Liquid storage pump; 3. Vulcanizing assembly; 4. Guide mechanism; 5. Third bolt structure; 6. Sensor assembly; 7. Controller. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Example:

[0032] See attached document Figure 1-2 An air suspension device with hydraulic lifting function includes: an airbag shock absorber 1, a hydraulic lifting cylinder 2, a vulcanizing assembly 3, and a guide mechanism 4.

[0033] The airbag shock absorber 1 has a first bolt structure 11 at one end connected to the vehicle body, and a second bolt structure 12 at the other end connected to the hydraulic lifting cylinder. The lower end of the hydraulic lifting cylinder 2 has a lifting ring structure 21, which houses a rubber bushing and a vulcanized assembly 3 after pin vulcanization. The rubber bushing is positioned at the mating point between the lifting ring structure 21 and the vulcanized assembly 3. Both ends of the vulcanized assembly 3 have through holes that mate with the third bolt structure. One end of the guide mechanism 4 has a blind hole that mates with the third bolt structure. One end of the third bolt structure 5 passes through the through hole and is threaded into the blind hole to install the guide mechanism 4. The other end of the guide mechanism 4 is connected to the wheel. The air suspension system is connected to the air supply equipment via the airbag shock absorber to adjust suspension stiffness and provide better comfort. The hydraulic lifting cylinder is connected to the hydraulic supply equipment to adjust suspension height, meeting the requirements of rapid vehicle height adjustment and a large lifting stroke. It also controls the hydraulic and pneumatic pressure of the air suspension system, combining the advantages of hydraulic and air suspension.

[0034] Preferably, the guide mechanism 4 has a blind hole at one end, which is connected to the vulcanizing component 3, and a "U"-shaped groove at the other end. The "U"-shaped groove is located between the two blind holes to avoid the lifting ring structure 21.

[0035] Furthermore, the upper end of the hydraulic lifting cylinder 2 is formed with a mounting hole that mates with the second bolt structure 12 of the airbag shock absorber 1, so as to allow the second bolt structure 12 to be installed with the airbag shock absorber 1.

[0036] In this embodiment, a schematic diagram of a suspension system is provided. Figure 3 The suspension system includes: a controller 7, and four hydropneumatic systems and several sensor assemblies 6 connected to the controller;

[0037] The hydraulic-pneumatic system consists of an air supply device composed of an air pressure control valve 13, an air cylinder 14, and an air storage pump 15; a liquid supply device composed of a hydraulic control valve 22, an oil cylinder 23, and a liquid storage pump 24; and the aforementioned air suspension device. The airbag shock absorber of the air suspension device is connected to the air pressure control valve of the air supply device, and the hydraulic lifting cylinder of the air suspension device is connected to the hydraulic control valve of the liquid supply device. Each air suspension device is connected to one wheel.

[0038] Preferably, the two pneumatic control valves located at the front or rear of the vehicle are connected, and the two hydraulic control valves located at the front or rear of the vehicle are connected to achieve joint control.

[0039] The controller uses sensors such as height, speed, acceleration, weight, oil temperature, and air pressure to determine the vehicle's driving status. Based on a pre-programmed sequence, it obtains adjustment information for the required stiffness, damping, and height of the four suspension components (front, rear, left, and right). It adjusts the stiffness of the airbag shock absorbers via the air pressure control valve of the air supply system and adjusts the height of the hydraulic lifting cylinder via the oil pressure control valve of the hydraulic supply system, and can lock these controls to adapt to various road conditions. It features a fast response time and can obtain ideal suspension characteristic curves.

[0040] As a preferred option, if higher requirements are needed, an electronically controlled shock absorber connected to the controller can be installed side by side next to the airbag shock absorber 1 and the hydraulic lifting cylinder 2. This allows for adjustment by adding an adjustable damping electronically controlled shock absorber, and the vehicle can be tuned to better meet various working conditions.

[0041] This invention utilizes an air suspension system connected by an airbag shock absorber, a hydraulic lifting cylinder, and an electronically controlled shock absorber. Under electronically coordinated control, it meets high comfort requirements while enabling active and rapid adjustment. It is suitable for various scenarios, such as low-stance urban comfort, high-stance off-road performance, and rapid dynamic adjustment. It can adapt to heavy-load trucks and special-purpose vehicles, as well as lighter-load buses and passenger cars.

[0042] This air suspension system adjusts suspension stiffness through airbag shock absorbers and air supply equipment, providing good comfort; it adjusts height through hydraulic lifting cylinders and fluid supply equipment, meeting the requirements for rapid vehicle height adjustment and large lifting stroke, thus meeting the requirements for driving stability; and it provides adjustable damping through electronically controlled shock absorbers to meet the needs of various road conditions.

[0043] This utility model relates to an air suspension device consisting of an airbag shock absorber, a hydraulic lifting cylinder, and an adjustable damping electronically controlled shock absorber.

[0044] (1) Combining the advantages of hydraulic suspension and air suspension, it has the advantages of quick adjustment, high comfort, simple system and low cost;

[0045] (2) The airbag shock absorber mainly meets the comfort function by adjusting the stiffness; the hydraulic lifting cylinder adopts a single hydraulic cylinder to achieve rapid lifting, height locking, foundation damping and rapid response.

[0046] (3) Electronically controlled shock absorbers achieve higher comfort requirements through adjustable damping;

[0047] (4) Simple connection, suitable for suspensions with different guiding mechanisms.

[0048] Although the present invention has been described herein with reference to illustrative embodiments, the above embodiments are merely preferred embodiments of the present invention, and the implementation of the present invention is not limited to the above embodiments. It should be understood that those skilled in the art can design many other modifications and implementations, which will fall within the scope and spirit of the principles disclosed in this application.

Claims

1. An air suspension device with hydraulic lifting function, characterized in that, include: Connected airbag shock absorbers, hydraulic lifting cylinders, vulcanizing components, and guiding mechanisms; One end of the airbag shock absorber has a first bolt structure for connection to the vehicle body, and the other end has a second bolt structure for connection to the hydraulic lifting cylinder. The lower end of the hydraulic lifting cylinder has a lifting ring structure, which contains a vulcanizing component. Both ends of the vulcanizing component have through holes that mate with the third bolt structure. One end of the guide mechanism has a blind hole that mates with the third bolt structure. One end of the third bolt structure passes through the through hole and is threaded into the blind hole to install the guide mechanism. The other end of the guide mechanism is connected to the wheel.

2. The air suspension device with hydraulic lifting function according to claim 1, characterized in that, A rubber bushing is provided at the mating position between the lifting ring structure and the vulcanizing component.

3. The air suspension device with hydraulic lifting function according to claim 1, characterized in that, The guide mechanism is connected to the vulcanizing component at one end, forming a "U"-shaped groove. The "U"-shaped groove is located between two blind holes to avoid the lifting ring structure.

4. An air suspension device with hydraulic lifting function according to any one of claims 1-3, characterized in that, The upper end of the hydraulic lifting cylinder has two mounting holes that mate with the second bolt structure of the airbag shock absorber.

5. A suspension system, characterized in that, It includes a controller, four hydropneumatic systems connected to the controller, and several sensor components; each hydropneumatic system has an air suspension device with hydraulic lifting function as described in any one of claims 1-4, to be connected to a wheel respectively.

6. A suspension system according to claim 5, characterized in that, The hydraulic-pneumatic system includes: An air supply device consisting of a pneumatic control valve, a cylinder, and an air storage pump; A liquid supply device consisting of a hydraulic control valve, a hydraulic cylinder, and a liquid storage pump; And air suspension system; The air suspension system's airbag shock absorbers are connected to the air pressure control valve of the air supply equipment, and the air suspension system's hydraulic lifting cylinder is connected to the hydraulic control valve of the fluid supply equipment, which is used to adjust the required stiffness and height of the vehicle's four suspensions.

7. A suspension system according to claim 5, characterized in that, The controller is connected to both a pneumatic control valve and a hydraulic control valve.

8. A suspension system according to claim 5, characterized in that, The sensor assembly includes a height sensor, a speed sensor, an acceleration sensor, a weight sensor, an oil temperature sensor, and a barometric pressure sensor.

9. A suspension system according to claim 5, characterized in that, The suspension system also features adjustable damping electronically controlled shock absorbers connected to the controller, arranged side-by-side with the airbag shock absorbers and hydraulic lifting cylinders.

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