Modular air suspension unit and suspension system

Abstract

Provided is a modular air suspension unit, comprising: a triangular control arm having a first end at the top and a second end and a third end at the bottom, the triangular control arm being hollow inside; a wheel hub unit mounted on the third end; a mechanical bearing connected between the second end of the triangular control arm and a longitudinal beam of a vehicle frame, and one end of the mechanical bearing is sleeved in a through hole provided on the second end of the triangular control arm; an air bag support integrally cast with the triangular control arm; an air bag having one end connected to a partition plate provided in a wheel box and the other end directly connected to the air bag support; a pneumatic brake device; and a shock absorber having one end connected to the partition plate and the other end connected to the triangular control arm; and an air chamber support directly connected to the triangular control arm or integrally cast with the triangular control arm. Also provided is an air suspension system, which can simplify the overall structure, facilitate installation and maintenance, further improve the structural stability, and reduce the risk of tire wear.

Description

Technical Field

[0001] This utility model relates to the field of vehicle air suspension, and more particularly to a modular air suspension unit and suspension system. Background Technology

[0002] Modern logistics places increasingly higher demands on the cargo space and / or load capacity of trucks or trailers. However, the existing truck suspension units result in a high chassis, making it difficult to utilize the space below the wheel center, thus requiring further improvement in truck loading space. To address this, Chinese Patent ZL201710181651.9 discloses a vehicle suspension device and a vehicle including the same. The vehicle suspension device includes a suspension spring structure disposed above the corresponding wheel, one end of which is connected to the vehicle body, and the length between the two ends of the suspension spring structure changes under set lifting conditions; a suspension bracket including a first position, a second position, and a third position, the first position of which is connected to the other end of the suspension spring structure, the second position of which is connected to the corresponding wheel, and the suspension bracket is rotatable relative to the wheel; and a main bearing connected between the third position of the suspension bracket and the vehicle body, and the suspension bracket is rotatable relative to the vehicle body. See also Figure 11-12 The diagram shows a main bearing 500, including a bearing pin 151, trunnion bushings 152, a bearing housing 153, and a sealing cover 155. The first end of the bearing pin 151 is fixed to a third position on the suspension bracket. The first end of the bearing housing 153 is fitted onto the second end of the bearing pin 151, and the outer wall of the bearing housing 153 is connected to the vehicle body. The trunnion bushings 152 are fitted onto both ends of the bearing pin 151, elastically supporting the inner wall of the bearing housing 153 and the outer wall of the bearing pin 151. The trunnion bushings 152 are made of an elastic sealing material. The sealing cover 155 is screwed to the second end of the bearing pin 151 by fixing bolts 156, and the sealing cover 155 presses and seals the bearing housing 153 and the trunnion bushings 152 at both ends of the bearing housing 153 against the first end of the bearing pin 151.

[0003] However, the flexible trunnion bushing is prone to aging and deformation during use, which increases the clearance and may cause tire wear due to wobbling, reducing its lifespan. In addition, the air chamber in ZL201710181651.9 is connected to the top of the triangular support frame through a bracket, connecting plate and support arm. Its structure is complex and has a higher risk of failure under bumpy road conditions.

[0004] Therefore, it is necessary to study a modular air suspension unit and suspension system to solve one or more of the above-mentioned technical problems. Utility Model Content

[0005] To solve at least one of the above-mentioned technical problems, according to one aspect of the present invention, a modular air suspension unit is provided, characterized in that it comprises:

[0006] The triangular control arm has a first end at the top and a second and a third end at the bottom. The interior of the triangular control arm is a hollow structure.

[0007] The hub unit is installed at the third end;

[0008] A mechanical bearing is connected between the second end of the triangular control arm and the longitudinal beam of the frame, and one end is fitted into the through hole provided at the second end of the triangular control arm.

[0009] The airbag support is integrally cast with the triangular control arm;

[0010] The airbag is connected at one end to a partition installed inside the wheel box, and at the other end directly to the airbag bracket;

[0011] Pneumatic braking device; and

[0012] The shock absorber is connected at one end to the partition and at the other end to the triangular control arm.

[0013] The pneumatic braking device includes: an air chamber connected to the triangular control arm via an air chamber bracket; and a transmission unit connected between the air chamber and the brake. The air chamber bracket is directly connected to the triangular control arm or integrally cast with the triangular control arm.

[0014] According to another aspect of the present invention, the main body of the air chamber support is a plate-shaped arm with weight-reducing holes.

[0015] According to another aspect of the present invention, the number of weight-reducing holes is greater than one, the first end of the plate-shaped arm is connected to the triangular control arm and its width is greater than the width of the second end of the plate-shaped arm, the plate-shaped arm extends obliquely upward, and the width of the first end of the plate-shaped arm is greater than half the length of the corresponding connecting side of the triangular arm.

[0016] According to another aspect of the present invention, the airbag support is disposed at the top of the first end.

[0017] According to another aspect of the present invention, the air chamber is fixedly connected to the triangular control arm and the relative position remains fixed.

[0018] According to another aspect of the present invention, the transmission unit includes: a connecting arm, one end of which is connected to the air chamber and the other end of which is connected to an adjusting rod; and an adjusting arm, one end of which is connected to the adjusting rod and the other end of which is connected to the brake or brake lever.

[0019] According to another aspect of the present invention, the connecting arm can rotate around the pin shaft provided on the air chamber support under the drive of the air chamber, so as to drive the adjusting rod, the adjusting arm and the brake to move.

[0020] According to another aspect of the present invention, an air suspension system is also provided, characterized in that it includes:

[0021] The first wheel box is vertically arranged on the first side of the vehicle body;

[0022] The second wheel box is vertically arranged on the second side of the vehicle body; and

[0023] Multiple crossbeams connect the two longitudinal beams of the frame, and wheels are arranged between two adjacent crossbeams;

[0024] The first and second wheel boxes contain the aforementioned modular air suspension units, which are configured corresponding to each wheel. The space enclosed by the first wheel box, the second wheel box, and multiple crossbeams is used to arrange the carriage.

[0025] According to another aspect of the present invention, the height of the plurality of crossbeams from the ground is less than 1 / 2 of the wheel radius.

[0026] According to another aspect of the present invention, no connecting shaft running through the left and right sides is provided between the wheels.

[0027] This utility model can achieve one or more of the following technical effects:

[0028] 1. The use of mechanical bearings and their fixed connection between the longitudinal beam and the triangular control arm improves structural stability and alignment accuracy. It also solves the problem of easy aging and deformation of elastic trunnion bushings in the existing technology, which causes tire swaying and wear.

[0029] 2. The airbag support and the triangular control arm are integrally cast, which simplifies the structure, improves structural stability, and reduces installation and maintenance work;

[0030] 3. The air chamber support and the triangular control arm are integrally cast, which can further simplify the structure and improve structural stability. Attached Figure Description

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0032] Figure 1 This is a schematic diagram of an air suspension system (corresponding to two sets of wheels) according to a preferred embodiment of the present invention.

[0033] Figure 2-3 for Figure 1 Front and rear views of the air suspension system.

[0034] Figure 4 for Figure 1 Bottom view of the air suspension system.

[0035] Figure 5 This is a schematic diagram of a modular air suspension unit (installation state) according to a preferred embodiment of the present invention.

[0036] Figure 6 This is a schematic diagram of two sets of modular air suspension units (installation state) according to a preferred embodiment of the present invention.

[0037] Figure 7-8 This is a schematic diagram of the modular air suspension unit according to a preferred embodiment of the present invention from both the front and rear views.

[0038] Figure 9-10 These are perspective views of a modular air suspension unit according to a preferred embodiment of the present invention from two different angles.

[0039] Figure 11-12 These are schematic diagrams of the triangular control arm and main bearing of the existing technology ZL201710181651.9. Detailed Implementation

[0040] The preferred embodiments of the present invention will now be described with reference to the accompanying drawings. These specific embodiments are intended to illustrate the present invention in detail, but should not be construed as limiting the present invention. Various modifications and variations can be made without departing from the spirit and scope of the present invention, and all of these should be included within the protection scope of the present invention.

[0041] Example 1

[0042] According to a preferred embodiment of this utility model, see [link to relevant documentation]. Figure 1-10 A modular air suspension unit is provided, characterized by comprising:

[0043] The triangular control arm 65 has a first end at the top and a second and a third end at the bottom, and the interior of the triangular control arm is a hollow structure.

[0044] Hub unit 60 is mounted on the third end;

[0045] Mechanical bearing 61 is connected between the second end of the triangular control arm and the longitudinal beam 1 of the frame, and one end is fitted into the through hole provided at the second end of the triangular control arm;

[0046] The airbag support 51 is integrally cast with the triangular control arm;

[0047] Airbag 52, one end is connected to a partition installed inside the wheel box, and the other end is directly connected to the airbag bracket;

[0048] Pneumatic braking device; and

[0049] Shock absorber 63, one end of which is connected to the partition plate and the other end of which is connected to the triangular control arm;

[0050] The pneumatic braking device includes: an air chamber 54 connected to the triangular control arm via an air chamber bracket 55; and a transmission unit connected between the air chamber and the brake. The air chamber bracket is directly connected to the triangular control arm or integrally cast with the triangular control arm.

[0051] Preferably, the airbag 52 is connected to the partition via an upper bracket 53. A sealing ring and an end cap are provided at the outer end of the mechanical bearing 61. The triangular control arm is connected to the longitudinal beam 1 via a mounting base 62. One end of the shock absorber 63 is connected to the partition via a shock absorber bracket 64.

[0052] According to another preferred embodiment of the present invention, see [link to previous description]. Figure 8 The main body of the air chamber support 55 is a plate-shaped arm with weight-reducing holes.

[0053] According to another preferred embodiment of the present invention, the number of weight-reducing holes is greater than one, the first end of the plate-shaped arm is connected to the triangular control arm and its width is greater than the width of the second end of the plate-shaped arm, the plate-shaped arm extends obliquely upward, and the width of the first end of the plate-shaped arm is greater than half the length of the corresponding connecting side of the triangular arm.

[0054] According to another preferred embodiment of the present invention, the airbag support is disposed at the top of the first end.

[0055] According to another preferred embodiment of the present invention, the air chamber is fixedly connected to the triangular control arm and the relative position remains fixed.

[0056] According to another preferred embodiment of the present invention, the transmission unit includes: a connecting arm 56, one end of which is connected to the air chamber 54, and the other end of which is connected to an adjusting rod 57; and an adjusting arm 59, one end of which is connected to the adjusting rod, and the other end of which is connected to the brake or brake lever.

[0057] Preferably, the other end of the adjusting arm 59 is connected to the triangular control arm 65 via a fixed bracket 58.

[0058] According to another preferred embodiment of the present invention, the connecting arm can rotate around the pin shaft provided on the air chamber support under the drive of the air chamber, so as to drive the adjusting rod, the adjusting arm and the brake to move.

[0059] According to another preferred embodiment of the present invention, an air suspension system is also provided, characterized in that it includes:

[0060] The first wheel box 4 is vertically arranged on the first side of the vehicle body;

[0061] The second wheel box is vertically arranged on the second side of the vehicle body; and

[0062] Multiple crossbeams 2 are connected between two longitudinal beams 1 of the frame, and wheels are arranged between two adjacent crossbeams;

[0063] The first and second wheel boxes contain the aforementioned modular air suspension units, which are configured corresponding to each wheel. The space enclosed by the first wheel box, the second wheel box, and multiple crossbeams is used to arrange the carriage.

[0064] The air suspension system can be implemented as a modular system comprising one, two, three, four or more air suspension units.

[0065] Preferably, the first round box 4 includes a frame 3 and a skin.

[0066] According to another preferred embodiment of the present invention, the height of the plurality of crossbeams from the ground is less than 1 / 2 of the wheel radius.

[0067] According to another preferred embodiment of the present invention, no connecting shaft running through the left and right sides is provided between the wheels.

[0068] This utility model can achieve one or more of the following technical effects:

[0069] 1. The use of mechanical bearings and their fixed connection between the longitudinal beam and the triangular control arm improves structural stability and alignment accuracy. It also solves the problem of easy aging and deformation of elastic trunnion bushings in the existing technology, which causes tire swaying and wear.

[0070] 2. The airbag support and the triangular control arm are integrally cast, which simplifies the structure, improves structural stability, and reduces installation and maintenance work;

[0071] 3. The air chamber support and the triangular control arm are integrally cast, which can further simplify the structure and improve structural stability.

[0072] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A modular air suspension unit, characterized in that... include: The triangular control arm has a first end at the top and a second and a third end at the bottom. The interior of the triangular control arm is a hollow structure. The hub unit is installed at the third end; A mechanical bearing is connected between the second end of the triangular control arm and the longitudinal beam of the frame, and one end is fitted into the through hole provided at the second end of the triangular control arm. The airbag support is integrally cast with the triangular control arm; The airbag is connected at one end to a partition installed inside the wheel box, and at the other end directly to the airbag bracket; Pneumatic braking device; as well as The shock absorber is connected at one end to the partition and at the other end to the triangular control arm. The pneumatic braking device includes: an air chamber connected to the triangular control arm via an air chamber bracket; and a transmission unit connected between the air chamber and the brake. The air chamber bracket is directly connected to the triangular control arm or integrally cast with the triangular control arm.

2. The modular air suspension unit according to claim 1, characterized in that... The main body of the air chamber support is a plate-shaped arm with weight-reducing holes.

3. The modular air suspension unit according to claim 2, characterized in that... The number of weight-reducing holes is greater than one. The first end of the plate-shaped arm is connected to the triangular control arm and its width is greater than the width of the second end of the plate-shaped arm. The plate-shaped arm extends obliquely upward, and the width of the first end of the plate-shaped arm is greater than half the length of the corresponding connecting side of the triangular arm.

4. The modular air suspension unit according to any one of claims 1-3, characterized in that... The airbag support is disposed at the top of the first end.

5. The modular air suspension unit according to claim 4, characterized in that... The air chamber is fixedly connected to the triangular control arm and its relative position remains unchanged.

6. The modular air suspension unit according to claim 5, characterized in that... The transmission unit includes: a connecting arm, one end of which is connected to the air chamber and the other end of which is connected to an adjusting rod; and an adjusting arm, one end of which is connected to the adjusting rod and the other end of which is connected to the brake or brake lever.

7. The modular air suspension unit according to claim 6, characterized in that... The connecting arm can rotate around the pin on the air chamber support under the drive of the air chamber, thereby driving the adjusting rod, adjusting arm and brake to move.

8. A suspension system, characterized in that... include: The first wheel box is vertically arranged on the first side of the vehicle body; The second wheel box is vertically arranged on the second side of the vehicle body; and Multiple crossbeams connect the two longitudinal beams of the frame, and wheels are arranged between two adjacent crossbeams; The first wheel box and the second wheel box are provided with a modular air suspension unit as described in any one of claims 1-7. The modular air suspension unit is provided corresponding to each wheel. The space enclosed by the first wheel box, the second wheel box and the multiple crossbeams is used to arrange the carriage.

9. The suspension system according to claim 8, characterized in that... The height of the multiple crossbeams above the ground is less than 1 / 2 of the wheel radius.

10. The suspension system according to claim 8 or 9, characterized in that... There is no connecting shaft running through the left and right sides between the wheels.

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