Front air bag suspension assembly of commercial vehicle cab

Abstract

The utility model provides a front air bag suspension assembly of a commercial vehicle cab, belongs to the field of front air bag suspension assemblies, and aims to solve the problem that a mechanical spring cannot achieve ideal damping and anti-impact effects. Comprising a stabilizing cross rod and a connecting seat, a connecting assembly is fixedly arranged at the bottom of the connecting base, and a mounting structure is fixedly arranged on the outer side of a connecting shaft. An air bag assembly is fixedly arranged at the bottom of the mounting structure, and a damping adjusting structure is fixedly arranged on the outer side of the connecting assembly. By arranging the damping air bag and the fixing shaft, when the mounting base and the supporting arm rotate along with vibration of the cab, the damping air bag can be compressed and stretched, so that the cab is buffered in the up-down direction, meanwhile, the supporting arm transmits displacement of the supporting arm through the transverse connecting rod and the vertical connecting rod, and the damping effect is improved. Displacement is converted into air intake and exhaust amount through rotation of the height valve, then the height of the cab is adjusted, damping and buffering are conducted on the cab, and ideal damping and anti-impact effects can be achieved easily.

Description

Technical Field

[0001] The utility model belongs to the technical field of front airbag suspension assemblies, and more specifically, relates to a front airbag suspension assembly for a commercial vehicle cab. Background Art

[0002] The front suspension assembly, also known as the cab front suspension assembly, is an important component of the cab suspension system. It is arranged between the front lower part of the cab and the frame. It mainly supports, flips and resists roll of the cab. At the same time, it attenuates the vibration and impact transmitted to the cab by uneven road surface during vehicle driving, thereby improving ride comfort.

[0003] Existing commercial vehicle cab suspension assemblies mostly use mechanical springs as elastic elements. Although mechanical springs have a simple structure, their shock absorption and impact protection effects are not ideal. In addition, when the elastic parts of the current cab suspension assembly are compressed to the limit, collisions may occur between the support parts of the suspension assembly, which may cause a certain degree of damage to the support parts due to the collision, reducing the practicality of the suspension assembly. Utility Model Content

[0004] In order to solve the above technical problems, the present invention provides a commercial vehicle cab front airbag suspension assembly to solve the problem that the mechanical spring proposed in the above background technology cannot achieve ideal shock absorption and impact protection effects, and when the elastic parts are compressed to the limit, collisions may occur between the supporting parts of the suspension assembly.

[0005] The utility model is a commercial vehicle cab front airbag suspension assembly, which is achieved by the following specific technical means:

[0006] A commercial vehicle cab front airbag suspension assembly comprises: a stabilizing crossbar; support arms are fixedly provided at both ends of the stabilizing crossbar, and rubber bushings are fitted inside the support arms, and a support shaft is fitted inside the rubber bushings; a connecting seat is fixedly provided on the outside of the support shaft, and a buffering protrusion is fixedly provided at the bottom of one end of the support arm; a mounting protrusion is integrally provided at the top of one end of the support arm, and a rubber bushing is fitted inside the mounting protrusion, and a connecting shaft is fitted inside the rubber bushing;

[0007] A connecting assembly is fixedly provided at the bottom of the connecting seat, and a mounting structure is fixedly provided on the outside of the connecting shaft; an airbag assembly is fixedly provided at the bottom of the mounting structure, and a shock-absorbing adjustment structure is fixedly provided on the outside of the connecting assembly.

[0008] In at least some embodiments, the connecting assembly includes: a connecting seat and a connecting hole; the connecting seat is fixed to the bottom of the connecting seat by bolts; the connecting hole is opened in a through-type at the bottom of the connecting seat, and the connecting holes are symmetrically arranged in four groups.

[0009] In at least some embodiments, the mounting structure includes: a mounting seat, a mounting hole A, a mounting hole B, a reinforcing rib and a buffer block; the mounting seat is fixedly arranged on the outside of the end of the connecting shaft; the mounting hole A is opened in a through-type inside one side of the mounting seat; the mounting hole B is opened in a through-type inside the other side of the mounting seat, and the mounting holes B and the mounting holes A are symmetrically arranged in four groups; the reinforcing rib is arranged on the inside of the mounting seat; the buffer block is fixedly arranged at the bottom of the mounting seat, and the buffer block is located above the support arm.

[0010] In at least some embodiments, the mounting seat body is configured to be L-shaped, and the axes of the mounting holes A and B are configured to be perpendicular.

[0011] In at least some embodiments, the airbag assembly includes: a fixed shaft, a shock-absorbing airbag, a rotating shaft and a lower support; the fixed shaft is fixedly arranged inside the bottom side of the mounting seat; the shock-absorbing airbag is rotatably arranged on the outside of the fixed shaft; a rubber bushing is installed on the outside of the rotating shaft, and the rubber bushing is installed inside the telescopic end of the shock-absorbing airbag; the lower support is fixedly arranged on the outside of the rotating shaft.

[0012] In at least some embodiments, the airbag assembly further includes: a circular hole and a rubber block; the circular hole is opened inside the bottom side of the lower support; the rubber block is fixedly arranged on the top of one side of the lower support, and the rubber block is located below the buffer protrusion.

[0013] In at least some embodiments, the shock-absorbing adjustment structure includes: a fixed seat, a height valve, a transverse link and a vertical link; the fixed seat is fixedly arranged on the outside of the connecting seat; the height valve is fixedly arranged on the inside of the fixed seat; one end of the transverse link is fixedly arranged on the end of the height valve shaft; the bottom end of the vertical link is rotatably connected to the other end of the transverse link, and the top end of the vertical link is rotatably arranged on the outside of the support arm.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In the present invention, by providing a shock-absorbing airbag, a fixed shaft and a rotating shaft, the shock-absorbing airbag can be compressed and stretched when the mounting seat and the support arm rotate with the vibration of the cab, so that the cab can obtain a set of buffers in the up and down directions. At the same time, the support arm transmits the displacement of the support arm through the transverse connecting rod and the vertical connecting rod, and converts the displacement into intake and exhaust volume through the rotation of the height valve, thereby adjusting the height of the cab, and performing shock absorption and buffering on the cab, which is conducive to achieving ideal shock absorption and impact protection effects.

[0016] 2. In the present invention, by providing a buffer protrusion and a rubber block, flexible contact can be achieved between the lower support and the support arm. At the same time, the buffer block can be used to achieve flexible contact between the mounting seat and the support arm, thereby preventing the support members of the suspension assembly from colliding when the elastic member of the suspension assembly is compressed to the limit, thereby ensuring the service life of the suspension assembly; by vertically arranging the axes of the mounting hole A and the mounting hole B, the two mounting surfaces of the mounting seat and the cab can be vertically arranged, thereby ensuring the connection stability between the mounting seat and the suspension assembly and the cab, facilitating shock absorption and buffering of the cab, and enhancing the practicality of the suspension assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a front structural schematic diagram of the present utility model.

[0019] Figure 3 It is a schematic diagram of the structure of the utility model when viewed from above.

[0020] Figure 4 It is a schematic diagram of the top structure of the utility model.

[0021] Figure 5 It is a right side structural schematic diagram of the present utility model.

[0022] Figure 6 It is a left-side structural schematic diagram of the present utility model.

[0023] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0024] 1. Stabilizing cross bar; 2. Support arm; 201. Support shaft; 202. Connecting seat; 203. Buffering protrusion; 204. Mounting protrusion; 205. Connecting shaft; 3. Connecting assembly; 301. Connecting seat; 302. Connecting hole; 4. Mounting structure; 401. Mounting seat; 402. Mounting hole A; 403. Mounting hole B; 404. Reinforcing rib; 405. Buffer block; 5. Airbag assembly; 501. Fixed shaft; 502. Shock-absorbing airbag; 503. Rotating shaft; 504. Lower support; 505. Round hole; 506. Rubber block; 6. Shock-absorbing adjustment structure; 601. Fixed seat; 602. Height valve; 603. Horizontal connecting rod; 604. Vertical connecting rod. DETAILED DESCRIPTION

[0025] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples.

[0026] Example 1:

[0027] As attached Figure 1To the attached Figure 6 As shown:

[0028] The utility model provides a commercial vehicle cab front airbag suspension assembly, comprising: a stabilizing crossbar 1; support arms 2 are fixedly provided at both ends of the stabilizing crossbar 1, and rubber bushings are installed in the interior of the support arms 2, and a support shaft 201 is installed in the interior of the rubber bushings; a connecting seat 202 is fixedly provided on the outer side of the support shaft 201, and a buffer protrusion 203 is fixedly provided at the bottom of one end of the support arm 2; a mounting protrusion 204 is integrally provided at the top of one end of the support arm 2, and a rubber bushing is installed in the interior of the mounting protrusion 204, and a connecting shaft 205 is installed in the interior of the rubber bushing;

[0029] In the embodiment of the present disclosure, a connecting component 3 is fixedly provided at the bottom of the connecting seat 202, and a mounting structure 4 is fixedly provided on the outside of the connecting shaft 205; an airbag component 5 is fixedly provided at the bottom of the mounting structure 4, and a shock-absorbing adjustment structure 6 is fixedly provided on the outside of the connecting component 3; the connecting component 3 includes: a connecting seat 301 and a connecting hole 302; the connecting seat 301 is fixedly provided at the bottom of the connecting seat 202 by bolts; the connecting holes 302 are through-opened at the bottom of the connecting seat 301, and four groups of connecting holes 302 are symmetrically provided; its specific function is: by providing a buffer protrusion 203 and a rubber block 506, a flexible contact can be generated between the lower support 504 and the support arm 2, and at the same time, the buffer block 405 can be used to enable a flexible contact between the mounting seat 401 and the support arm 2, thereby preventing the support parts of the suspension assembly from colliding when the elastic parts of the suspension assembly are compressed to the limit.

[0030] Example 2:

[0031] As attached Figure 1 , Attachment Figure 2 With attached Figure 5 As shown: Based on the first embodiment, the mounting structure 4 includes: a mounting seat 401, a mounting hole A402, a mounting hole B403, a reinforcing rib 404 and a buffer block 405; the mounting seat 401 is fixedly arranged on the outer side of the end of the connecting shaft 205; the mounting hole A402 is opened in a through-type inside one side of the mounting seat 401; the mounting hole B403 is opened in a through-type inside the other side of the mounting seat 401, and the mounting holes B403 and the mounting holes A402 are symmetrically arranged in four groups; the reinforcing rib 404 is arranged on On the inner side of the mounting base 401; the buffer block 405 is fixedly arranged at the bottom of the mounting base 401, and the buffer block 405 is located above the support arm 2; the main body of the mounting base 401 is arranged in an L shape, and the axis of the mounting hole A402 and the axis of the mounting hole B403 are arranged vertically; its specific function is: through the vertical arrangement of the axis of the mounting hole A402 and the mounting hole B403, the two mounting surfaces of the mounting base 401 and the cab can be arranged vertically, thereby ensuring the connection stability between the mounting base 401 and the suspension assembly and the cab.

[0032] Example 3:

[0033] As attached Figure 1 , Attachment Figure 5 With attached Figure 6 As shown: Based on the first and second embodiments, the airbag assembly 5 includes: a fixed shaft 501, a shock-absorbing airbag 502, a rotating shaft 503, a lower support 504, a circular hole 505 and a rubber block 506; the fixed shaft 501 is fixedly arranged inside the bottom side of the mounting seat 401; the shock-absorbing airbag 502 is rotatably arranged on the outside of the fixed shaft 501; a rubber bushing is installed on the outside of the rotating shaft 503, and the rubber bushing is installed inside the telescopic end of the shock-absorbing airbag 502; the lower support 504 is fixedly arranged on the outside of the rotating shaft 503; the circular hole 505 is opened inside the bottom side of the lower support 504; the rubber block 506 is fixedly arranged on the top of one side of the lower support 504, and the rubber block 506 is located below the buffer protrusion 203; the shock-absorbing adjustment structure 6 includes: a fixed seat 601, a height valve 602, a transverse connecting rod 603 and a vertical connecting rod 604; the fixed seat 601 is fixedly arranged on the connecting seat 3 01 outside; the height valve 602 is fixedly arranged on the inside of the fixing seat 601; one end of the transverse link 603 is fixedly arranged on the end of the rotating shaft of the height valve 602; the bottom end of the vertical link 604 is rotatably connected to the other end of the transverse link 603, and the top end of the vertical link 604 is rotatably arranged on the outside of the support arm 2; its specific function is: by providing a shock-absorbing airbag 502, a fixed shaft 501 and a rotating shaft 503, the shock-absorbing airbag 502 can be compressed and stretched when the mounting seat 401 and the support arm 2 rotate with the vibration of the cab, so that the cab obtains a set of buffering in the up and down directions, and at the same time, the support arm 2 transmits the displacement of the support arm 2 through the transverse link 603 and the vertical link 604, and converts the displacement into intake and exhaust volume through the rotation of the height valve 602, thereby adjusting the height of the cab, and performing shock absorption and buffering on the cab, which is conducive to achieving ideal shock absorption and anti-impact effects.

[0034] The specific usage and function of this embodiment are as follows:

[0035] In the present invention, when in use, the mounting base 401 is mounted on the bottom of the commercial vehicle cab through the four groups of mounting holes A402 and the mounting holes B403; then the connecting base 301 and the lower support 504 are respectively mounted on the commercial vehicle frame using the connecting holes 302 and the circular holes 505; when the cab shakes during the driving of the commercial vehicle, the cab drives the support arm 2 to rotate through the mounting base 401 and the connecting shaft 205, so that the impact force received by the mounting base 401 is decomposed onto the support arm 2; the mounting base 401 stretches or compresses the shock-absorbing airbag 502 through the fixed shaft 501, so that the remaining impact force on the mounting base 401 is decomposed onto the support arm 2; is eliminated, and at the same time, the support arm 2 drives the rotating shaft of the height valve 602 to rotate through the vertical connecting rod 604 and the transverse connecting rod 603, and the displacement is converted into the intake and exhaust volume through the rotation of the height valve 602, thereby adjusting the height of the cab, and performing shock absorption and buffering on the cab; when the road surface is too uneven and the shock-absorbing airbag 502 and the height valve 602 are compressed to the limit, the mounting seat 401 and the support arm 2 are flexibly contacted through the buffer block 405; the support arm 2 and the lower support 504 are flexibly contacted with the buffer protrusion 203 through the rubber block 506, thereby preventing the occurrence of collision between the support parts of the suspension assembly.

Claims

1. A commercial vehicle cab front airbag suspension assembly, characterized in that: include: A stabilizing cross bar (1); support arms (2) are fixedly provided at both ends of the stabilizing cross bar (1), and a rubber bushing is installed in the support arm (2), and a support shaft (201) is installed in the rubber bushing; a connecting seat (202) is fixedly provided on the outside of the support shaft (201), and a buffering protrusion (203) is fixedly provided at the bottom of one end of the support arm (2); a mounting protrusion (204) is integrally provided at the top of one end of the support arm (2), and a rubber bushing is installed in the mounting protrusion (204), and a connecting shaft (205) is installed in the rubber bushing; A connecting assembly (3) is fixedly arranged at the bottom of the connecting seat (202), and a mounting structure (4) is fixedly arranged on the outside of the connecting shaft (205); an airbag assembly (5) is fixedly arranged at the bottom of the mounting structure (4), and a shock-absorbing adjustment structure (6) is fixedly arranged on the outside of the connecting assembly (3).

2. The commercial vehicle cab front airbag suspension assembly according to claim 1, characterized in that: The connection assembly (3) comprises: a connection seat (301) and connection holes (302); the connection seat (301) is fixedly arranged at the bottom of the connection seat (202) by means of bolts; the connection holes (302) are opened in the bottom of the connection seat (301) in a through-type manner, and the connection holes (302) are symmetrically arranged in four groups.

3. The commercial vehicle cab front airbag suspension assembly according to claim 1, characterized in that: The mounting structure (4) comprises: a mounting seat (401), a mounting hole A (402), a mounting hole B (403), a reinforcing rib (404) and a buffer block (405); the mounting seat (401) is fixedly arranged on the outer side of the end of the connecting shaft (205); the mounting hole A (402) is opened in a through-type inside one side of the mounting seat (401); the mounting hole B (403) is opened in a through-type inside the other side of the mounting seat (401), and the mounting holes B (403) and the mounting holes A (402) are both symmetrically arranged in four groups; the reinforcing rib (404) is arranged on the inner side of the mounting seat (401); the buffer block (405) is fixedly arranged at the bottom of the mounting seat (401), and the buffer block (405) is located above the support arm (2).

4. The commercial vehicle cab front airbag suspension assembly according to claim 3, characterized in that: The main body of the mounting seat (401) is arranged in an L shape, and the axes of the mounting hole A (402) and the mounting hole B (403) are arranged vertically.

5. The commercial vehicle cab front airbag suspension assembly according to claim 1, characterized in that: The airbag assembly (5) comprises: a fixed shaft (501), a shock-absorbing airbag (502), a rotating shaft (503) and a lower support (504); the fixed shaft (501) is fixedly arranged inside the bottom side of the mounting seat (401); the shock-absorbing airbag (502) is rotatably arranged outside the fixed shaft (501); the rotating shaft (503) is installed inside the telescopic end of the shock-absorbing airbag (502); and the lower support (504) is fixedly arranged outside the rotating shaft (503).

6. The commercial vehicle cab front airbag suspension assembly according to claim 5, characterized in that: The airbag assembly (5) further comprises: a circular hole (505) and a rubber block (506); the circular hole (505) is opened inside the bottom side of the lower support (504); the rubber block (506) is fixedly arranged on the top of one side of the lower support (504), and the rubber block (506) is located below the buffer protrusion (203).

7. The commercial vehicle cab front airbag suspension assembly according to claim 1, characterized in that: The shock-absorbing adjustment structure (6) comprises: a fixed seat (601), a height valve (602), a transverse connecting rod (603) and a vertical connecting rod (604); the fixed seat (601) is fixedly arranged on the outside of the connecting seat (301); the height valve (602) is fixedly arranged on the inside of the fixed seat (601); one end of the transverse connecting rod (603) is fixedly arranged on the end of the rotating shaft of the height valve (602); the bottom end of the vertical connecting rod (604) is rotatably connected to the other end of the transverse connecting rod (603), and the top end of the vertical connecting rod (604) is rotatably arranged on the outside of the support arm (2).

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