Suspension device for tracked vehicle and tracked vehicle

Abstract

The utility model discloses a kind of suspension device and tracked vehicle for tracked vehicle.The suspension device for tracked vehicle includes multiple suspension units, each suspension unit includes load wheel group, balance elbow, swing arm group and damping group.The suspension device can improve the stability and acceleration performance of vehicle.

Description

Technical Field

[0001] This utility model relates to a suspension device for tracked vehicles and a tracked vehicle. Background Technology

[0002] The suspension system of tracked vehicles serves as the main load-bearing structure, supporting the vehicle, bearing its weight, ensuring stable movement and obstacle avoidance, and improving drivability. Existing tracked vehicle suspension systems sometimes feature a single, integrated structure, which lacks freedom of movement and flexibility; others suffer from insufficient stability or acceleration performance when operating on complex road conditions.

[0003] A literature report describes a tracked vehicle suspension system comprising a rocker arm, a support arm, and a spring damper. One end of the rocker arm is mounted on a road wheel, and the other end is hinged to one end of the support arm. The other end of the support arm has a first connecting lug and a mounting plate, and the support arm is fixed to the vehicle body via the mounting plate. A second connecting lug is located on the rocker arm away from the hinged end. The spring damper is hinged at both ends to the first and second connecting lugs, respectively. The rocker arm, support arm, and spring damper form a triangle. This suspension system suffers from insufficient vehicle stability and acceleration performance during use. Utility Model Content

[0004] In view of this, one objective of this utility model is to provide a suspension device for tracked vehicles that can improve vehicle stability and acceleration performance, and increase vehicle speed. Furthermore, this suspension device for tracked vehicles is relatively flexible. Another objective of this utility model is to provide a tracked vehicle.

[0005] The present invention achieves the above objectives by adopting the following technical solution.

[0006] On the one hand, this utility model provides a suspension device for tracked vehicles, including multiple suspension units, each suspension unit including:

[0007] The road wheel assembly includes a first road wheel assembly and a second road wheel assembly, which are spaced apart; the first road wheel assembly includes a first connecting shaft; the second road wheel assembly includes a second connecting shaft.

[0008] The balance elbows are configured as two, namely the first balance elbow and the second balance elbow; the two balance elbows are located on both sides of the load-bearing wheel, the two ends of the first balance elbow are hinged to the first connecting shaft and the second connecting shaft respectively, and the two ends of the second balance elbow are hinged to the first connecting shaft and the second connecting shaft respectively.

[0009] The swing arm assembly includes a swing arm and a reinforcing crossbeam. The swing arm has a bent structure, with the bend located in the middle of the swing arm. One end of the swing arm is hinged to a third connecting shaft, which is configured to pass through the middle of the balance elbow. The other end of the swing arm is hinged to the frame assembly. The third connecting shaft is parallel to the first connecting shaft and the second connecting shaft. The swing arm includes a single swing arm and a double swing arm arranged in parallel. The reinforcing crossbeam is configured to pass through the single swing arm and the double swing arm.

[0010] The damping assembly has one end hinged to the third connecting shaft and the other end hinged to the frame assembly; the damping assembly is located on the side of the second balance elbow away from the first balance elbow. This suspension system can be used in conjunction with tracks to make travel smoother, meet the requirements of high-speed travel on complex road surfaces, maintain vehicle stability, and also improve vehicle handling and acceleration performance.

[0011] In this utility model, the first load-bearing wheel assembly includes a first load-bearing wheel and a first connecting shaft, with the first connecting shaft perpendicularly connected to the middle of the first load-bearing wheel; the second load-bearing wheel assembly includes a second load-bearing wheel and a second connecting shaft, with the second connecting shaft perpendicularly connected to the middle of the second load-bearing wheel.

[0012] In this invention, the balance elbow is integrally formed from forged alloy steel and heat-treated to increase its hardness. Two sets of elongated holes in the middle serve as weight-reduction holes, and reinforcing ribs are also provided. The load-bearing wheels are connected to both ends of the balance elbow to form a bridging structure, which is securely and reliably connected by pins, facilitating travel on complex road surfaces.

[0013] According to the suspension device for tracked vehicles described in this utility model, preferably, the structure of the first road wheel assembly is the same as that of the second road wheel assembly; the first road wheel assembly includes two first road wheels and a first connecting shaft; wherein, the two first road wheels are connected by a connecting sleeve; the first connecting shaft is configured to be connected to the two first road wheels respectively. This facilitates smoother movement.

[0014] In this invention, the first connecting shaft is configured to be perpendicularly connected to the middle of each of the two first road wheels. Similarly, the second road wheel assembly includes two second road wheels and a second connecting shaft; wherein the two second road wheels are connected by a connecting sleeve; and the second connecting shaft is configured to be perpendicularly connected to the middle of each of the two second road wheels.

[0015] In this invention, the first and second load-bearing wheels are integrally formed from high-strength forged aluminum alloy and feature a multi-spoke design to effectively reduce weight. The spokes and rims are connected by a large arc to enhance connection strength. The outer circumference of the spokes is hot-pressed and bonded with vulcanized rubber.

[0016] According to the tracked vehicle suspension device of this utility model, preferably, one end of the single swing arm is hinged to the end of the third connecting shaft away from the damping assembly, and the other end of the single swing arm is hinged to the frame assembly; one end of the double swing arm is hinged to the middle of the third connecting shaft, and the other end of the double swing arm is hinged to the frame assembly; the first balance elbow is located between the single swing arm and the double swing arm; the double swing arm is located between the first balance elbow and the second balance elbow. This can improve the stability of the suspension device structure.

[0017] According to the suspension device for tracked vehicles described in this utility model, preferably, the thickness of the double swing arm along the length direction of the third connecting shaft is less than the interval distance between the two first road wheels; an elongated hole is provided on the balance elbow. The elongated hole serves as a weight-reducing hole.

[0018] According to the suspension device for tracked vehicles described in this utility model, preferably, the double swing arm consists of two parallel first connecting swing arms and a second connecting swing arm. The ends of the first connecting swing arm and the second connecting swing arm are connected by a swing arm reinforcing sleeve, and the bends of the first and second connecting swing arms are connected by the swing arm reinforcing sleeve. This is beneficial for enhancing the structural stability of the swing arm assembly.

[0019] In this invention, the swing arm reinforcing sleeve has a cylindrical structure, which does not hinder the hinge connection between the swing arm and the frame assembly and the third connecting shaft.

[0020] According to the suspension device for tracked vehicles described in this utility model, preferably, the single swing arm, the first connecting swing arm, and the second connecting swing arm are all flat, bent structures, each having a width and a bending angle; the opening direction of the bending angle is substantially the same as the width direction of the bent structure; and weight-reducing holes are provided at the bends of the single swing arm, the first connecting swing arm, and the second connecting swing arm. This provides good passability and comfort, and facilitates high-speed driving. According to one embodiment of this utility model, the weight-reducing holes are circular holes.

[0021] In this invention, both the single and double swing arms are symmetrical structures, allowing for adjustment of the installation direction according to actual needs during use. The double swing arms can be constructed from high-strength steel through welding and undergo heat treatment to enhance hardness. Reinforcing ribs are provided on the single swing arm. This ensures that the overall swing arm assembly possesses good rigidity and strength.

[0022] According to the suspension device for tracked vehicles described in this utility model, preferably:

[0023] Two elongated connecting holes are provided on the single swing arm, the first connecting swing arm, and the second connecting swing arm; the connecting holes are designed to allow the reinforcing crossbeam to pass through.

[0024] The tracked vehicle suspension device also includes a limit pointer, which is sleeved on the third connecting shaft and located between the first balance elbow and the single swing arm.

[0025] In this invention, the swing arm assembly is a combined structure welded from a single swing arm, a double swing arm, and a reinforcing crossbeam. This structure offers high rigidity and strength, enabling it to withstand significant impact loads. The reinforcing crossbeam is a separate structure connected by bolts, facilitating the installation, use, and maintenance of the swing arm assembly.

[0026] In this invention, the limit pointer is used to limit the swing angle of the balance elbow, ensuring that the running trajectory of the road wheel is within a safe range, thereby improving the operational reliability of the lightweight high-speed suspension device.

[0027] According to the suspension device for tracked vehicles of the present invention, preferably, the damping component includes a spring and a damping support assembly; the spring is sleeved on the damping support assembly, and the extension and retraction direction of the spring is the same as the length direction of the damping support assembly.

[0028] In this invention, the vibration damping support assembly can be integrally machined from high-strength forged aluminum alloy. The vibration damping support assembly features a closed cavity with adhesive filling, providing cushioning and vibration absorption capabilities. The spring is made of titanium alloy, effectively reducing the weight of the vibration damping assembly.

[0029] According to the suspension device for tracked vehicles of the present invention, preferably, it further includes a limiting sleeve, which is sleeved on the third connecting shaft and configured to position one end of the vibration damping assembly.

[0030] On the other hand, the present invention also provides a tracked vehicle, including a frame assembly, tracks and a suspension device for tracked vehicles as described above, one end of the damping assembly is hinged to the frame assembly, and the end of the swing arm assembly away from the balance elbow is hinged to the frame assembly; in the use state, the first road wheel and the second road wheel in the road wheel assembly are configured to contact the tracks.

[0031] The suspension device for tracked vehicles of this invention can improve vehicle stability and acceleration performance, making the ride smoother and enabling high-speed travel on complex road surfaces while maintaining vehicle stability. Furthermore, the suspension device for tracked vehicles of this invention is lightweight, making it a lightweight high-speed suspension device. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the suspension unit of the suspension device for tracked vehicles according to this utility model.

[0033] Figure 2 This is a schematic diagram showing the relative positional relationship between the suspension unit, the frame assembly, and the tracks of the suspension device for tracked vehicles of this utility model.

[0034] Figure 3 This is a schematic diagram of the swing arm assembly of this utility model.

[0035] Figure 4 This is a schematic diagram showing the suspension unit of this utility model, including more components.

[0036] Figure 5 for Figure 3 A top view of the structure consisting of the swing arm.

[0037] Figure 6 This is a schematic diagram showing the relative position of the swing arm assembly in the suspension unit of this utility model after directional adjustment with the vehicle frame assembly and tracks.

[0038] The annotations in the attached figures are explained as follows:

[0039] 81-Road wheel assembly, 82-Balance elbow, 821-First balance elbow, 83-Swing arm assembly, 831-Single swing arm, 8321-Swing arm reinforcing sleeve, 833-Reinforcing crossbeam, 8331-Round hole key, 8332-First reinforcing crossbeam, 8333-Second reinforcing crossbeam, 84-Vibration damping assembly, 841-Spring, 85-Limiting sleeve, 861-Hexagonal bevel shaft assembly, 862-Crank arm mounting shaft, 87-Limiting pointer; 801-Weight reduction hole, 802-Connecting hole;

[0040] 30 - Tracks, 40 - Chassis assembly. Detailed Implementation

[0041] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0042] Example 1

[0043] Figure 1 This is a schematic diagram of the suspension unit of the suspension device for tracked vehicles according to this utility model. Figure 2 This is a schematic diagram showing the relative positional relationship between the suspension unit, the frame assembly, and the tracks of the suspension device for tracked vehicles of this utility model. Figure 3 This is a schematic diagram of the swing arm assembly of this utility model. Figure 4 This is a schematic diagram showing the suspension unit of this utility model, including more components. Figure 5 for Figure 3 A top view of the structure consisting of the swing arm. Figure 6 This is a schematic diagram showing the relative position of the swing arm assembly in the suspension unit of this utility model after directional adjustment with the vehicle frame assembly and tracks.

[0044] like Figures 1 to 6As shown, the tracked vehicle suspension device of this embodiment includes multiple suspension units, each of which includes a road wheel assembly 81, a balance elbow 82, a swing arm assembly 83, a shock absorber assembly 84, a limit sleeve 85, and a limit pointer 87.

[0045] Road wheel assembly 81 includes a first road wheel assembly and a second road wheel assembly, which are arranged alternately. Specifically, as shown in... Figure 1 As shown, the two are spaced apart. The first road wheel assembly includes a first road wheel and a first connecting shaft, with the first connecting shaft perpendicularly connected to the middle of the first road wheel. The second road wheel assembly includes a second road wheel and a second connecting shaft, with the second connecting shaft perpendicularly connected to the middle of the second road wheel. The structure of the first road wheel assembly is the same as that of the second road wheel assembly.

[0046] Specifically, the first road wheel assembly includes two first road wheels and a first connecting shaft; the two first road wheels are fixedly connected by a connecting sleeve, and the first connecting shaft is perpendicularly connected to the middle of each of the two first road wheels. The first connecting shaft is configured to be hinged to the first balance elbow 821 and the second balance elbow. The second connecting shaft is configured to be hinged to the first balance elbow 821 and the second balance elbow.

[0047] like Figure 1 and Figure 4 As shown, two balance elbows 82 are provided, namely a first balance elbow 821 and a second balance elbow. The two balance elbows are located on both sides of the load-bearing wheel assembly 81, that is, the load-bearing wheel assembly 81 is located between the two balance elbows 82. The two ends of the first balance elbow 821 are hinged to one end of the first connecting shaft and one end of the second connecting shaft, respectively. The two ends of the second balance elbow are hinged to the other ends of the first connecting shaft and the other end of the second connecting shaft, respectively. The second balance elbow is close to the vibration damping assembly 84. Both balance elbows 82 are provided with elongated holes for weight reduction. The balance elbow 82 is basically an elongated structure, with symmetrical arc-shaped ends and a centrally located symmetrical arc-shaped upper and lower protrusions.

[0048] The swing arm assembly 83 includes a swing arm and a reinforcing crossbeam 833. The swing arm has a bent structure, with the bend located in the middle of the swing arm; one end of the swing arm is hinged to a third connecting shaft, which passes through the middle of the balance elbow 82, and the other end of the swing arm is hinged to the frame assembly 40; the third connecting shaft is parallel to both the first and second connecting shafts. (Refer to...) Figure 1 and Figure 6 As shown, the direction of the swing arm can be adjusted according to actual needs.

[0049] The first, second, and third connecting shafts are all pin shafts.

[0050] like Figure 1 and Figure 3 As shown, the swing arm includes a single swing arm 831 and a double swing arm. (As...) Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, the single swing arm 831 is away from the damping assembly 84, while the double swing arm is close to the damping assembly 84. The single swing arm 831 and the double swing arm are arranged in parallel. One end of the single swing arm 831 is hinged to the end of the third connecting shaft away from the damping assembly 84, and the other end of the single swing arm is hinged to the frame assembly 40 via a crank arm mounting shaft 862. A limit pointer 87 is sleeved on the third connecting shaft, and the limit pointer 87 is located between the single swing arm 831 and the first balance elbow 821. One end of the double swing arm is hinged to the middle of the third connecting shaft, and the other end of the double swing arm is hinged to the frame assembly 40 via an internal hexagonal half-shaft assembly 861. The first balance elbow 821 is located between the single swing arm 831 and the double swing arm. The double swing arm is located between the first balance elbow 821 and the second balance elbow. The internal hexagonal half-shaft assembly 861 consists of a bolt shaft and a nut shaft that are engaged by internal and external threads, and has an internal hexagonal hole on the outside to facilitate the fastening and disassembly of the internal hexagonal half-shaft assembly 861.

[0051] The thickness of the double swing arm along the length of the third connecting shaft is less than the interval between the two first load wheels and less than the interval between the two second load wheels.

[0052] The double swing arm consists of two parallel connecting swing arms, a first connecting swing arm and a second connecting swing arm. The ends of the first and second connecting swing arms are connected by a swing arm reinforcing sleeve 8321, and the bends of the first and second connecting swing arms are also connected by the swing arm reinforcing sleeve 8321. The swing arm reinforcing sleeve 8321 is used for connection and reinforcement between the first and second connecting swing arms.

[0053] The single swing arm 831, the first connecting swing arm, and the second connecting swing arm are all flat, bent structures. These flat, bent structures have thickness, width, and a bending angle. The opening direction of the bending angle is essentially the same as the width direction of the bent structure and perpendicular to its thickness direction. Weight-reducing holes 801 are provided at the bends of the single swing arm 831, the first connecting swing arm, and the second connecting swing arm. The weight-reducing holes 801 are circular.

[0054] Two elongated connecting holes 802 are respectively provided on the single swing arm 831, the first connecting swing arm, and the second connecting swing arm. The connecting holes 802 are designed for the passage of the reinforcing crossbeam 833. There are two sets of reinforcing crossbeams 833. The reinforcing crossbeams 833 are used to connect the double swing arm and the single swing arm 831. Each set of reinforcing crossbeams 833 includes a first reinforcing crossbeam 8332 and a second reinforcing crossbeam 8333. Both the first reinforcing crossbeam 8332 and the second reinforcing crossbeam 8333 have a similar L-shaped structure. Both have a vertically connected flat plate insertion part and a vertical part. The flat plate insertion part is used to insert into the connecting hole 802. The vertical parts of the first reinforcing crossbeam 8332 and the second reinforcing crossbeam 8333 are close to each other. These two vertical parts are fastened together by bolts, so that the first reinforcing crossbeam 8332 and the second reinforcing crossbeam 8333 are connected as one unit. Both vertical sections have keyways on their end faces for mounting the round-hole key 8331, which is secured by bolts. The round-hole key 8331 enhances the crossbeam 833's ability to withstand shear forces.

[0055] One end of the damping assembly 84 is hinged to one end of the third connecting shaft, and the other end is hinged to the frame assembly 40. Specifically, the other end of the damping assembly 84 is hinged to the frame assembly 40 via a pin. The damping assembly 84 includes a spring 841 and a damping support assembly. The spring 841 is sleeved on the damping support assembly, and the extension and contraction direction of the spring 841 is the same as the length direction of the damping support assembly. The damping support assembly has a closed cavity, and the cavity is filled with putty. Figure 2 As shown, the limiting sleeve 85 has a U-shaped structure with two straight sections and an arc-shaped bottom. Limiting holes are provided on the two straight sections. The limiting holes of the limiting sleeve 85 are fitted onto the third connecting shaft, so that the end of the vibration damping component 84 is located between the two straight sections of the limiting sleeve 85, thereby positioning the vibration damping component 84.

[0056] Example 2

[0057] This embodiment provides a tracked vehicle, including a suspension system, a frame assembly 40, and tracks 30 as described in Embodiment 1. Figure 2 and Figure 6 As shown, one end of the vibration damping assembly 84 is hinged to the frame assembly 40, and the end of the swing arm assembly 83 away from the balance elbow 82 is hinged to the frame assembly 40; in the use state, the first and second road wheels in the road wheel assembly 81 are configured to contact the track 30.

[0058] This utility model is not limited to the above-described embodiments. Any modifications, improvements, or substitutions that can be conceived by those skilled in the art without departing from the essential content of this utility model fall within the scope of this utility model.

Claims

1. A suspension device for a tracked vehicle, characterized in that, It includes multiple suspension units, each of which includes: The road wheel assembly includes a first road wheel assembly and a second road wheel assembly, which are spaced apart; the first road wheel assembly includes a first connecting shaft; the second road wheel assembly includes a second connecting shaft. The balance elbows are configured as two, namely the first balance elbow and the second balance elbow; the two balance elbows are located on both sides of the load-bearing wheel, the two ends of the first balance elbow are hinged to the first connecting shaft and the second connecting shaft respectively, and the two ends of the second balance elbow are hinged to the first connecting shaft and the second connecting shaft respectively. The swing arm assembly includes a swing arm and a reinforcing crossbeam. The swing arm has a bent structure, with the bend located in the middle of the swing arm. One end of the swing arm is hinged to a third connecting shaft, which is configured to pass through the middle of the balance elbow. The other end of the swing arm is hinged to the frame assembly. The third connecting shaft is parallel to the first connecting shaft and the second connecting shaft. The swing arm includes a single swing arm and a double swing arm arranged in parallel. The reinforcing crossbeam is configured to pass through the single swing arm and the double swing arm. The vibration damping assembly has one end hinged to the third connecting shaft and the other end hinged to the frame assembly; the vibration damping assembly is located on the side of the second balance elbow away from the first balance elbow.

2. The suspension device for tracked vehicles according to claim 1, characterized in that, The structure of the first load-bearing wheel assembly is the same as that of the second load-bearing wheel assembly; the first load-bearing wheel assembly includes two first load-bearing wheels and a first connecting shaft; wherein, the two first load-bearing wheels are connected to each other by a connecting tube sleeve; the first connecting shaft is configured to be connected to the two first load-bearing wheels respectively.

3. The suspension device for tracked vehicles according to claim 2, characterized in that, One end of the single swing arm is hinged to the end of the third connecting shaft away from the damping assembly, and the other end of the single swing arm is hinged to the frame assembly; one end of the double swing arm is hinged to the middle of the third connecting shaft, and the other end of the double swing arm is hinged to the frame assembly; the first balance elbow is located between the single swing arm and the double swing arm; the double swing arm is located between the first balance elbow and the second balance elbow.

4. The suspension device for tracked vehicles according to claim 3, characterized in that, The thickness of the double swing arm along the length of the third connecting shaft is less than the distance between the two first load wheels; an elongated hole is provided on the balance elbow.

5. The suspension device for tracked vehicles according to claim 3, characterized in that, The double swing arm consists of two parallel first connecting swing arms and second connecting swing arms. The ends of the first connecting swing arms and the ends of the second connecting swing arms are connected by a swing arm reinforcing sleeve, and the bends of the first connecting swing arms and the bends of the second connecting swing arms are connected by a swing arm reinforcing sleeve.

6. The suspension device for tracked vehicles according to claim 5, characterized in that, The single swing arm, the first connecting swing arm, and the second connecting swing arm are all flat, bent structures with a width and a bending angle. The opening direction of the bending angle is basically the same as the width direction of the bent structure. Weight reduction holes are provided at the bends of the single swing arm, the first connecting swing arm, and the second connecting swing arm.

7. The suspension device for tracked vehicles according to claim 6, characterized in that: Two elongated connecting holes are provided on the single swing arm, the first connecting swing arm, and the second connecting swing arm; the connecting holes are designed to allow the reinforcing crossbeam to pass through. The tracked vehicle suspension device also includes a limit pointer, which is sleeved on the third connecting shaft and located between the first balance elbow and the single swing arm.

8. The suspension device for tracked vehicles according to any one of claims 1 to 7, characterized in that, The vibration damping component includes a spring and a vibration damping support assembly; the spring is sleeved on the vibration damping support assembly, and the extension and contraction direction of the spring is the same as the length direction of the vibration damping support assembly.

9. The suspension device for tracked vehicles according to claim 8, characterized in that, It also includes a limiting sleeve, which is fitted onto the third connecting shaft and is configured to position one end of the vibration damping assembly.

10. A tracked vehicle, characterized in that, The system includes a frame assembly, tracks, and a suspension system for tracked vehicles as described in any one of claims 1 to 9, wherein one end of the damping assembly is hinged to the frame assembly, and one end of the swing arm assembly away from the balance elbow is hinged to the frame assembly; in use, the first and second road wheels in the road wheel assembly are configured to contact the tracks.

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