Suspension mechanism, walking unit and tracked vehicle

Abstract

The invention discloses a suspension mechanism, a walking unit and a tracked vehicle. The suspension mechanism comprises a main framework, an auxiliary framework and a vibration reduction supporting assembly. Wherein the main framework comprises a plurality of cantilever type platy structures; the auxiliary framework comprises a plurality of suspensions, and the suspensions are oppositely arranged in parallel; the main framework is positioned above the auxiliary framework and is movably connected with the auxiliary framework; one end of the vibration reduction supporting assembly is connected with the auxiliary framework and is close to the auxiliary framework. According to the suspension mechanism, a good vibration reduction effect is achieved in a small stroke space. The impact of the ground on a vehicle body through wheels during vehicle movement is relieved, the vibration of the vehicle body is attenuated, the optimal vibration reduction effect is achieved, the stability and comfort of the vehicle are ensured, the fatigue loss of the whole structure is effectively reduced, and the running safety of the vehicle is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a suspension mechanism, a traveling unit and a tracked vehicle. BACKGROUND

[0002] The suspension mechanism is installed between the vehicle body and the road wheel, and its functions mainly include: (1) elastically supporting the vehicle body to alleviate the impact and vibration generated by the track and the road wheel when driving on the road and transmitted to the vehicle body, improving the working environment of the passengers in the vehicle and improving the working efficiency; (2) reducing the damage and destruction of vibration to various parts of the vehicle, increasing the reliability, and ensuring that the tracked vehicle can fully exert the maximum efficiency of the power transmission device on any road surface, thereby ensuring driving at the maximum speed, and making the tracked vehicle have good mobility.

[0003] The suspension mechanism of the tracked vehicle can be classified according to the method of transmitting the load to the road wheel, including: (1) forming a set of non-independent suspension damping units by torsion bar structure on the left and right sides of the suspension mechanism, which is called non-independent suspension mechanism; (2) the suspension method of installing two or more road wheels on the same mechanism is called balanced suspension.

[0004] When designing the suspension mechanism, the specific structural form of different vehicle models, the design speed and load carrying capacity of the vehicle and other conditions need to be considered. The traditional torsion bar type non-independent suspension mechanism increases the height of the vehicle body, and when maintaining and repairing, the traveling unit needs to be disassembled or even the tracked vehicle needs to be disassembled for replacement and repair. The traditional balanced independent suspension mechanism mostly adopts the structure of arranging the shock absorber in the center of the auxiliary suspension, which will cause small dynamic stroke space and poor damping effect when used in the tracked assembly module integrated with the power module and the action part. SUMMARY

[0005] Therefore, one object of the present application is to provide a suspension mechanism which can realize better damping effect in a small stroke space after the action part of the tracked vehicle is integrated with the power module, and has better damping effect to ensure the stability and comfort of the vehicle, effectively reduce the fatigue loss of the overall structure, and improve the running safety of the vehicle. Another object of the present application is to provide a traveling unit. Another object of the present application is to provide a tracked vehicle.

[0006] The present application achieves the above objects by adopting the following technical solutions.

[0007] In one aspect, the present application provides a suspension mechanism, comprising a main frame, an auxiliary frame and a damping support assembly; wherein,

[0008] The main frame comprises a plurality of cantilever plate structures; the auxiliary frame comprises a plurality of suspensions, and the plurality of suspensions are arranged in parallel;

[0009] The main frame is located above the auxiliary frame and movably connected with the auxiliary frame;

[0010] One end of the damping support assembly is connected with the auxiliary frame and close to the auxiliary frame.

[0011] In this way, after the track vehicle action part is integrated with the power module, the damping effect can be achieved in a small stroke space.

[0012] In the present application, the main frame can be provided as a plurality of cantilevered plate-shaped structures, the auxiliary frame includes a plurality of cantilevers arranged in parallel, the main frame and the auxiliary frame form a balanced suspension, and the change range of the damping support assembly is controlled by limiting the swing of the balanced suspension, so as to control the movement track of the load wheel.

[0013] According to the suspension mechanism of the present application, preferably, the main frame includes a first cantilever, a second cantilever and a third cantilever, all of which are thin plate-shaped structures gradually curved from both ends to the middle, and are arranged in parallel;

[0014] The first cantilever, the second cantilever and the third cantilever are movably connected with the auxiliary frame through a first connecting piece; and an end of the first connecting piece away from the first cantilever is connected with one end of the damping support assembly.

[0015] According to the suspension mechanism of the present application, preferably, both ends of the first cantilever are respectively provided with a first connecting hole and a second connecting hole; the first connecting hole is matched with the first connecting piece;

[0016] Further comprising a second connecting piece; the second connecting piece is matched with the second connecting hole.

[0017] According to the suspension mechanism of the present application, preferably, both ends of the second cantilever are respectively provided with a third connecting hole and a fourth connecting hole; both ends of the third cantilever are respectively provided with a fifth connecting hole and a sixth connecting hole; the third connecting hole and the fifth connecting hole are respectively matched with the first connecting piece;

[0018] Further comprising a third connecting piece; the third connecting piece is respectively matched with the fourth connecting hole and the sixth connecting hole.

[0019] In the present application, the number and position of the cantilevers can be set according to actual needs. According to a specific embodiment of the present application, the main frame includes a first cantilever, a second cantilever and a third cantilever, the first cantilever is arranged at the outer side of the auxiliary frame, and the second cantilever and the third cantilever are located between the auxiliary frames. In this way, the bounce of the load wheel can be adjusted.

[0020] In the present application, the connecting pieces can be all designed as pin shafts. The first connecting piece can include a shaft body and a shaft sleeve, and the shaft sleeve is sleeved on the shaft body. In this way, the main frame and the auxiliary frame can be better connected.

[0021] According to the suspension mechanism of the present application, preferably, the fourth connecting piece is further included; the middle bending portions of the second and third suspension arms are respectively provided with first and second fixing holes; and the fourth connecting piece is matched with the first and second fixing holes respectively to fix the second and third suspension arms.

[0022] In the present application, the first, second and third suspension arms can be further provided with first lightening holes. According to a specific embodiment of the present application, the main frame includes the first, second and third suspension arms, and the number of the first lightening holes on each suspension arm is at least one, preferably at least two. In this way, the main frame can be a lightweight structure.

[0023] According to the suspension mechanism of the present application, preferably, the auxiliary frame includes two suspension frames, the first suspension arm is located at the outer side of one of the suspension frames, and the second and third suspension arms are located between the two suspension frames; and the first connecting piece is further connected with the two suspension frames perpendicularly to connect the main frame and the auxiliary frame.

[0024] According to the suspension mechanism of the present application, preferably, each suspension frame includes a body and a support portion; the body is designed as a thin plate structure with a generally rectangular shape and arc-shaped ends; the middle portion of the body is provided with a first through hole, and the two ends are respectively provided with second through holes; the support portion is arranged around the outside of the body and extends out of the body, and the middle positions of the top and bottom of the support portion are arc-shaped and protrude out of the body.

[0025] In the present application, each suspension frame includes a body and a support portion; the middle portion of the body is provided with a first through hole, and the two ends are respectively provided with second through holes; the first connecting piece is arranged in the first through hole and the first, third and fifth connecting holes of the main frame to movably connect the end of the main frame away from the frame with the auxiliary frame; and the second through holes are used to connect the load wheels. The body can be further provided with second lightening holes, which can be designed as long strip-shaped holes, and the number of the second lightening holes can be set according to actual requirements, and the number is at least two, for example, when the number is two, the second lightening holes can be symmetrically arranged between the first and second through holes.

[0026] According to the suspension mechanism of the present application, preferably, the damping support assembly includes an elastic element, a damper and a mounting seat; the elastic element is sleeved on the damper, and the mounting seat is arranged at the two end portions of the damper; one end of the damper is fixed to the end portion of the first connecting piece away from the first suspension arm; and the damper is arranged in a substantially vertical manner.

[0027] In the present application, the damping support assembly comprises an elastic element, a damper and a mounting seat. The elastic element and the damper can adopt a coaxial assembly structure, forming a variable stiffness damping support assembly. The elastic element can be provided as a rubber stack, the damper can be a hydraulic damper, and the mounting seat can be provided as a spring mounting seat.

[0028] In another aspect, the present application also provides a walking unit comprising a load wheel and a suspension mechanism as described above, wherein,

[0029] The plurality of suspension mechanisms are arranged at intervals; and the two ends of the auxiliary frame are respectively connected with the load wheels.

[0030] In another aspect, the present application also provides a tracked vehicle comprising a vehicle frame and a walking unit as described above; wherein one end of the main frame is connected with the vehicle frame through a second connecting piece and a third connecting piece; and the other end of the damper is connected with the vehicle frame.

[0031] The suspension mechanism tracked vehicle action part of the present application integrates the power module after installation, realizes better damping effect in a smaller stroke space. The suspension mechanism reduces the impact of the ground on the vehicle body through the wheels during vehicle movement, attenuates the vibration of the vehicle body, realizes the best damping effect, ensures the stability and comfort of the vehicle, effectively reduces the fatigue loss of the overall structure, and improves the running safety of the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 The figure is a structural diagram of the suspension mechanism of the present application.

[0033] Figure 2 The figure is an installation diagram of the main frame and the auxiliary frame of the present application.

[0034] Figure 3 The figure is a structural diagram of the walking unit of the present application.

[0035] The reference signs are explained as follows:

[0036] 1-main frame, 11-first cantilever, 111-first connecting hole, 112-second connecting hole, 12-second cantilever, 121-third connecting hole, 122-fourth connecting hole, 123-first fixing hole, 13-third cantilever, 131-fifth connecting hole, 132-sixth connecting hole, 110-first weight-reducing hole;

[0037] 2-auxiliary frame, 21-suspension, 211-body, 2111-second through hole, 2112-second weight-reducing hole, 212-supporting part;

[0038] 31-first connecting piece, 311-shaft body, 312-shaft sleeve, 32-second connecting piece, 33-third connecting piece, 34-fourth connecting piece;

[0039] 4 - damping support assembly, 41 - elastic element, 42 - damper, 43 - mounting seat;

[0040] 5 - road wheel; 6 - vehicle frame. DETAILED DESCRIPTION

[0041] The application will be further described in connection with specific embodiments, but the scope of protection of the application is not limited thereto.

[0042] Example 1

[0043] Figure 1 Structure diagram of the suspension mechanism of the application. Figure 2 Structure diagram of the suspension mechanism of the application. Figure 3 Structure diagram of the suspension mechanism of the application.

[0044] As shown in Figures 1-3 The suspension mechanism of the application is applicable to a tracked vehicle, which comprises a main frame 1, a sub-frame 2, a connecting piece and a damping support assembly 4.

[0045] As shown in Figure 2As shown, the main frame 1 includes a first cantilever 11, a second cantilever 12 and a third cantilever 13, all of which are thin plate-shaped structures gradually curved from both ends to the middle, and are arranged in parallel relative to each other, and the first cantilever 11, the second cantilever 12 and the third cantilever 13 are movably connected with the auxiliary frame 2 through a first connecting piece 31. Specifically, both ends of the first cantilever 11 are respectively provided with a first connecting hole 111 and a second connecting hole 112, both ends of the second cantilever 12 are respectively provided with a third connecting hole 121 and a fourth connecting hole 122, and both ends of the third cantilever 13 are respectively provided with a fifth connecting hole 131 and a sixth connecting hole 132. The first connecting piece 31 is sequentially arranged in the first connecting hole 111, the third connecting hole 121 and the fifth connecting hole 131 to movably connect one end of the main frame 1 with the auxiliary frame 2. The second connecting piece 32 is matched with the second connecting hole 112, and the third connecting piece 33 is matched with the fourth connecting hole 122 and the sixth connecting hole 132. A first fixing hole 123 and a second fixing hole (not shown) are respectively arranged at the middle curved portions of the second cantilever 12 and the third cantilever 13, and a fourth connecting piece 34 is arranged in the first fixing hole 123 and the second fixing hole to fix the second cantilever 12 and the third cantilever 13. The first cantilever 11, the second cantilever 12 and the third cantilever 13 are also respectively provided with a first weight-reducing hole 110. In the embodiment, three first weight-reducing holes 110 are arranged on the first cantilever 11, for example, a long strip-shaped hole is arranged near the first connecting hole 111 and the second connecting hole 112, and a circular hole is arranged at the middle curved portion. Two first weight-reducing holes 110 are respectively arranged on the second cantilever 12 and the third cantilever 13, and are symmetrically arranged with the first fixing hole 123 and the second fixing hole as the center. In this way, the main frame 1 is formed as a lightweight structure.

[0046] As shown in Figure 2 The auxiliary frame 2 includes two suspensions 21 arranged in parallel relative to each other, the first cantilever 11 is located at the outer side of one of the suspensions 21, the second cantilever 12 and the third cantilever 13 are located between the two suspensions 21, the first connecting piece 31 is perpendicularly connected with the two suspensions 21 respectively, and most of the first connecting piece 31 is located between the two suspensions 21, thereby connecting the main frame 1 and the auxiliary frame 2.

[0047] As shown in Figure 2 Each of the suspensions 21 includes a body 211 and a support portion 212, the body 211 is arranged as a thin plate-shaped structure with a generally rectangular shape and arc-shaped ends, a first through hole (not shown) is arranged at the middle portion of the body 211, and a second through hole 2111 is arranged near each end portion. Specifically, the first connecting piece 31 is arranged in the first through hole and the first connecting hole 111, the third connecting hole 121 and the fifth connecting hole 131 of the main frame 1 to movably connect the main frame 1 and the auxiliary frame 2. Figure 1The second through hole 2111 is used to connect the load wheel 5. The second weight-reducing hole 2112 is also arranged on the body 211. In this embodiment, the second weight-reducing hole 2112 is arranged as an elongated hole, and two second weight-reducing holes 2112 are arranged on each body 211, which are symmetrically arranged between the first through hole and the second through hole 2111. The support part 212 is arranged around the outside of the body 211 and extends out of the body 211, and the top and bottom of the support part 212 are arranged in an arc shape protruding from the body 211.

[0048] The connecting members can be pin shafts, wherein, as shown in Figure 2 The first connecting member 31 includes a shaft body 311 and a shaft sleeve 312, and the shaft sleeve 312 is sleeved on the shaft body 311. The two ends of the shaft body 311 are respectively located outside the two suspensions 21.

[0049] As shown in Figure 1 and Figure 3 The damping support assembly 4 includes an elastic element 41, a damper 42, and two mounting seats 43, the elastic element 41 is sleeved on the damper 42, the two mounting seats 43 are arranged at the two ends of the damper 42, one end of the damper 42 is connected with the frame 6 through one mounting seat 43, and the other end is connected with the first connecting member 31 through the other mounting seat 43. The elastic element 41 and the damper 42 adopt a coaxial assembly structure, and are a variable stiffness damping support assembly. The elastic element 41 is arranged as a rubber stack, the damper 42 is a hydraulic damper, and the mounting seat 43 is a spring mounting seat.

[0050] The second suspension arm 12 and the third suspension arm 13 are symmetrically arranged about the median line of the two suspensions 21, and the first suspension arm 11 and the damping support assembly 4 are symmetrically arranged about the median line of the two suspensions 21.

[0051] Example 2

[0052] As shown in Figure 3 This embodiment provides a walking unit, which includes a plurality of groups of the suspension mechanism and the load wheel 5 described in embodiment 1; the plurality of groups of suspension mechanisms are arranged at intervals; the two ends of the auxiliary frame 2 are respectively connected with the load wheel 5; and the plurality of groups of suspension mechanisms constitute one walking unit. In this embodiment, three groups of suspension mechanisms constitute one walking unit.

[0053] Example 3

[0054] The embodiment provides a tracked vehicle, which comprises a frame 6 and the walking unit described in embodiment 2; wherein the frame 6 is composed of longitudinal beams and cross beams of a tracked support frame; one end of the main frame 1 of the suspension mechanism is connected with the frame 6 through the second connecting piece 32 and the third connecting piece 33, and the other end of the main frame 1 is connected with the auxiliary frame 2. The end of the damping support assembly 4 far from the auxiliary frame 2 is connected with the frame 6.

[0055] The present application is not limited to the above-mentioned embodiments, and any modification, improvement and replacement conceived by those skilled in the art without departing from the essence of the present application falls within the scope of the present application.

Claims

1. A suspension mechanism, characterized by, The suspension mechanism comprises a main frame, a sub-frame and a damping support assembly, wherein The main frame comprises a plurality of cantilevered plate structures, and the sub-frame comprises a plurality of suspensions which are arranged in parallel. The main frame is arranged above the sub-frame and is movably connected to the sub-frame. One end of the damping support assembly is connected to the sub-frame and is close to the sub-frame.

2. The suspension mechanism according to claim 1, wherein The main frame comprises a first cantilever, a second cantilever and a third cantilever, which are all thin plate structures with both ends gradually bending towards the middle and are arranged in parallel. The first cantilever, the second cantilever and the third cantilever are movably connected to the sub-frame through a first connecting member, and an end of the first connecting member away from the first cantilever is connected to one end of the damping support assembly.

3. The suspension mechanism according to claim 2, wherein Both ends of the first cantilever are respectively provided with a first connecting hole and a second connecting hole, and the first connecting hole is matched with the first connecting member. The suspension mechanism further comprises a second connecting member which is matched with the second connecting hole.

4. The suspension mechanism according to claim 3, wherein Both ends of the second cantilever are respectively provided with a third connecting hole and a fourth connecting hole, and both ends of the third cantilever are respectively provided with a fifth connecting hole and a sixth connecting hole, and the third connecting hole and the fifth connecting hole are respectively matched with the first connecting member. The suspension mechanism further comprises a third connecting member which is respectively matched with the fourth connecting hole and the sixth connecting hole.

5. The suspension mechanism of claim 4, wherein, The suspension mechanism further comprises a fourth connecting member, and the middle bending parts of the second cantilever and the third cantilever are respectively provided with a first fixing hole and a second fixing hole, and the fourth connecting member is respectively matched with the first fixing hole and the second fixing hole to fixedly connect the second cantilever and the third cantilever.

6. The suspension mechanism of claim 2, wherein, The sub-frame comprises two suspensions, the first cantilever is arranged outside one of the suspensions, the second cantilever and the third cantilever are arranged between the two suspensions, and the first connecting member is further connected to the two suspensions perpendicularly to connect the main frame and the sub-frame.

7. A suspension mechanism according to claim 6, characterised in that Each suspension comprises a body and a support part, the body is arranged as a thin plate structure with a generally rectangular shape and arc-shaped ends, the middle part of the body is provided with a first through hole, and both ends are respectively provided with a second through hole, the support part is arranged around the outside of the body and extends out of the body, and the middle positions of the top and bottom of the support part are arc-shaped and protrude out of the body.

8. A suspension mechanism according to any one of claims 4 to 7, characterised in that, The damping support assembly comprises an elastic element, a damper and a mounting seat, the elastic element is sleeved on the damper, the mounting seat is arranged at both ends of the damper, one end of the damper is fixed to the end of the first connecting member away from the first cantilever, and the damper is arranged in a substantially vertical manner.

9. A walking unit characterized by comprising: The suspension mechanism comprises a plurality of groups of the suspension mechanism according to claim 8 and a plurality of load wheels, wherein the plurality of suspension mechanisms are arranged at intervals, and the two ends of the sub-frame are respectively connected with the load wheels.

10. A tracked vehicle characterized by, The walking unit as claimed in claim 9 is connected to the frame through a second connecting member and a third connecting member. The other end of the damper is connected to the frame.

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