Front suspension stabilizer bar assembly of cab
By using technical means such as joint bearings and rear bushing pads in the front suspension stabilizer rod assembly in the heavy truck cab, the wear and abnormal noise problems caused by axial rafting and large friction of the stabilizer rod are solved, and higher durability and reliability are achieved.
Patent Information
- Application Number
- CN202421829276.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The existing heavy truck cab front suspension stabilization rod assembly structure has the problem of axial squirming of the stabilization rod and large friction of the sliding bearings, and it is easy to cause abnormal noise when the vehicle rolls.
The articulated bearing is used to articulate the lower bracket to limit the axial movement of the stabilizer rod and reduce friction and abnormal noise through the rear bushing pad and lubrication system.
Effectively prevent axial trolling of the stabilizer rod, reduce wear and abnormal noise, and improve product durability and reliability.
Smart Images
Figure CN222905242U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automobiles, in particular to a cab front suspension stabilizer bar assembly. Background Art
[0002] The stabilizer bar is an important part of the heavy truck cab suspension system, which is used to improve the stability and comfort performance of the vehicle, and can reduce the roll and sway of the vehicle when turning or passing through uneven roads. Most of the existing structures of the heavy truck cab front suspension stabilizer bar assembly are composed of a stabilizer bar, a rear bushing, a sliding bearing and standard parts, etc. The rear bushing is press-fitted into the stabilizer bar swing arm hole with interference. The shaft heads on both sides of the stabilizer bar are matched with the lower bracket through sliding bearings, and the rear bushing is connected to the upper bracket on the cab through bolts.
[0003] The existing structure of the front suspension stabilizer bar assembly has the following defects: the cooperation between the stabilizer bar and the lower bracket through the sliding bearing has no axial constraint, and it will move axially along the stabilizer bar; at the same time, the sliding bearing is used at the position of the stabilizer bar shaft head, and the friction is large during rotation, which is easy to cause serious wear of the sliding bearing and the stabilizer bar shaft head after long-term use, resulting in abnormal noise during vehicle driving; when the vehicle rolls, both sides of the rear bushing installation of the side swing arm are easy to collide with the upper bracket on the cab, generating abnormal noise. Summary of the Utility Model
[0004] In view of this, the utility model provides a cab front suspension stabilizer bar assembly, which can limit the axial movement of the stabilizer bar and solve the problem of abnormal noise caused by wear and collision, and the stabilizer bar assembly has strong durability.
[0005] The utility model is realized through the following technical solutions:
[0006] A cab front suspension stabilizer bar assembly includes a stabilizer bar, side swing arms, spherical plain bearings and rear bushings; the shaft heads at both ends of the stabilizer bar are respectively hinged to the outer right lower bracket and left lower bracket through spherical plain bearings, and the left lower bracket and the right lower bracket are perpendicular to the stabilizer bar; two side swing arms are respectively located inside the shaft heads at both ends, one end of the side swing arm is fixed on the stabilizer bar, and the other end of the side swing arm is connected to the cab bracket through a rear bushing, and the other end of the side swing arm is perpendicular to the axis direction of the stabilizer bar.
[0007] Further, a through hole is provided along the axial direction of the stabilizer bar at one end of the side swing arm connected to the cab bracket, and the rear bushing and the through hole are connected to the side swing arm with interference fit, and the cab bracket passes through the rear bushing and is fixedly connected thereto.
[0008] Further, rear bushing soft pads are provided at both ends of the rear bushing, and the rear bushing soft pads are attached to both sides of the through hole provided on the side swing arm.
[0009] Further, oil cups are respectively provided on the left lower bracket and the right lower bracket. The lubricant flows into the joint bearing radially along the oil cups. Gaskets are provided on both sides of the joint bearing, and the gaskets seal the lubricant within the joint bearing; a buffer device is provided outside the gaskets.
[0010] Further, the buffer device includes an inner ring buffer block provided on the inner side of the shaft head and an outer buffer block provided on the outer side of the shaft head; a rubber pad is provided on the outer side of the outer buffer block; internal threads are provided in the shaft heads at both ends of the stabilizer bar, and screws pass through the rubber pad and are in threaded cooperation with the shaft heads to axially press both ends of the stabilizer bar onto the left lower bracket and the right lower bracket.
[0011] Further, a limit block is provided at the connection between the stabilizer bar and the side swing arm, and the limit block protrudes upward relative to the stabilizer bar.
[0012] Compared with the existing technology, the beneficial effects of the present utility model are as follows:
[0013] 1. In the present utility model, the stabilizer bar is hinged to the lower bracket through a joint bearing. The joint bearing can limit the axial movement of the stabilizer bar, prevent the axial movement of the stabilizer bar, and the joint bearing has self-lubricating ability. With spherical contact, the friction force is reduced, and the occurrence of abnormal noise is greatly reduced.
[0014] 2. Soft pads are provided at both ends of the rear bushing of the present utility model. When the vehicle rolls, it can well prevent the side swing arm from colliding with the cab bracket and generating abnormal noise.
[0015] 3. The present utility model is provided with oil cups, and lubricant is filled through the oil cups to lubricate the bearings. Gaskets on both sides of the bearings seal the lubricant, further ensuring good lubrication of the joint bearings, avoiding abnormal noise, and improving durability.
[0016] 4. In the present utility model, the screws are screwed into the threaded holes of the stabilizer bar shaft heads to restrict the relative axial movement of the stabilizer bar with respect to the right lower bracket and the left lower bracket, further preventing the axial movement of the stabilizer bar. The limit block prevents the stabilizer bar from colliding with other parts of the suspension system. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is the front view of the stabilizer bar assembly of the present utility model, and the joint bearing at the right end of the stabilizer bar is a sectional view.
[0018] Figure 2 It is the left view of the stabilizer bar assembly of the present utility model.
[0019] Figure 3 It is the top view of the stabilizer bar assembly of the present utility model, and the joint bearing and the rear bushing on the right side are sectional views.
[0020] Figure 4 It is the partial enlarged view of the stabilizer bar assembly of the present utility model.
[0021] Among them, 1 - stabilizer bar, 2 - left lower bracket, 3 - limit block, 4 - oil cup, 5 - rear bushing, 6 - rear bushing soft pad, 7 - right lower bracket, 8 - spherical plain bearing, 9 - gasket, 10 - outer buffer block, 11 - inner buffer block, 12 - screw, 13 - rubber pad, 14 - side swing arm. Specific embodiments
[0022] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0023] The present utility model provides a cab front suspension stabilizer bar assembly, as Figure 1 , 2 shown. The stabilizer bar assembly includes a stabilizer bar 1, a side swing arm 14, a spherical plain bearing 8 and a rear bushing 5. The lower brackets in the cab suspension system include a left lower bracket 2 and a right lower bracket 7. The left lower bracket 2 and the right lower bracket 7 are perpendicular to the stabilizer bar 1. The shaft heads at both ends of the stabilizer bar 1 are respectively hinged to the left lower bracket 2 and the right lower bracket 7 through the spherical plain bearing 8. The stabilizer bar 1 can rotate relative to the lower bracket, and the axial movement of the stabilizer bar 1 is restricted by the spherical plain bearing 8. The two side swing arms 14 are respectively located inside the shaft heads at both ends of the stabilizer bar 1. The inside of the shaft head refers to the side away from the end of the stabilizer bar 1, and the outside of the shaft head of the stabilizer bar 1 refers to the end of the stabilizer bar 1. One ends of the two side swing arms 14 are respectively fixed to both ends of the stabilizer bar 1, and the other ends of the two side swing arms 14 are both connected to the cab bracket through the rear bushing 5. The other ends of the side swing arms 14 are perpendicular to the axis direction of the stabilizer bar 1.
[0024] As an improvement, through holes are provided along the axial direction of the stabilizer bar 1 at the ends of the two side swing arms 14 connected to the cab bracket. The rear bushing 5 and the through holes are connected to the side swing arms 14 by interference fit. The cab bracket passes through the rear bushing 5 and is fixedly connected to the rear bushing 5. In this embodiment, the rear bushing 5 is fixedly connected to the cab bracket by bolts.
[0025] As Figure 2 , 3 shown, as a further improvement, rear bushing soft pads 6 are provided at both ends of the rear bushing 5. The rear bushing soft pads 6 are attached to both sides of the through holes provided on the side swing arms 14. The rear bushing soft pads 6 limit the contact between the side swing arms 14 and the cab bracket during vehicle roll, avoiding abnormal noises. In this embodiment, the rear bushing soft pads 6 are made of polyurethane material.
[0026] As Figure 3 , 4As shown, as a further improvement, oil cups 4 are respectively provided on the left lower bracket 2 and the right lower bracket 7. The oil cups 4 communicate with the spherical plain bearings 8. The outer ring and the inner ring of the spherical plain bearings 8 are both provided with circumferential oil channels and radial oil holes. The oil cups 4 are communicated with the spherical plain bearings 8 through the radial holes on the left lower bracket 2 and the right lower bracket 7 that cooperate with the oil holes. By filling lubricants into the oil cups 4, the lubricants flow into the radial holes and then flow into the spherical plain bearings 8 along the oil holes and the oil channels. Gaskets 9 are provided on both sides of the spherical plain bearings 8. The gaskets 9 seal the lubricants in the spherical plain bearings 8. The gaskets 9 can be made of rubber. A buffer device is provided outside the gaskets 9. The buffer device includes an inner ring buffer block 11 provided on the inner side of the shaft head and an outer buffer block 10 provided on the outer side of the shaft head.
[0027] As Figure 4 As shown, as a further improvement, a rubber pad 13 is provided on the outer side of the outer buffer block 10. The rubber pad 13 can be made of rubber. Threads are provided inside the shaft heads at both ends of the stabilizer bar 1. The screw 12 passes through the rubber pad 13 and is in threaded cooperation with the shaft head to axially press both ends of the stabilizer bar 1 on the left lower bracket 2 and the right lower bracket 7. In this embodiment, the screw 12 is an M14 screw. When the screw 12 is tightened, the rubber pad 13 is pressed against the outer buffer block 10, and the stabilizer bar 1 is axially pressed on the left lower bracket 2 and the right lower bracket 7 to prevent its axial movement, but ensure that the stabilizer bar 1 can rotate relative to the lower bracket.
[0028] As a further improvement, limit blocks 3 are provided at the joints of the stabilizer bar 1 and the side swing arm 14. The limit blocks 3 protrude upward relative to the stabilizer bar 1. The limit blocks 3 are used to prevent the stabilizer bar 1 from colliding with other parts of the suspension system when the vehicle vibrates up and down.
[0029] The front suspension stabilizer bar assembly of the present utility model using the spherical plain bearings 8 can limit the axial movement of the stabilizer bar 1. By filling lubricants into the spherical plain bearings 8 through the oil cups 4, the rubber gaskets 9 seal the lubricants to ensure good lubricity of the spherical plain bearings 8. The polyurethane soft pads on both sides of the rear bushing 5 further prevent abnormal noises caused by collisions and improve the reliability and durability of the product.
[0030] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A cab front suspension stabilizer bar assembly, characterized in that: It includes a stabilizer bar, a side swing arm, a joint bearing and a rear bushing; the shaft heads at both ends of the stabilizer bar are respectively hinged to the outer right lower bracket and the left lower bracket through joint bearings, and the left lower bracket and the right lower bracket are perpendicular to the stabilizer bar; the two side swing arms are respectively located on the inner sides of the shaft heads at both ends, one end of the side swing arm is fixed on the stabilizer bar, and the other end of the side swing arm is connected to the cab bracket through the rear bushing, and the other end of the side swing arm is perpendicular to the axis direction of the stabilizer bar.
2. The cab front suspension stabilizer bar assembly according to claim 1, characterized in that: One end of the side swing arm connected to the cab bracket is provided with a through hole along the axial direction of the stabilizer bar, the rear bushing and the through hole are connected to the side swing arm by interference fit, and the cab bracket passes through the rear bushing and is fixedly connected thereto.
3. The cab front suspension stabilizer bar assembly according to claim 2, characterized in that: Rear bushing pads are provided at both ends of the rear bushing, and the rear bushing pads are attached to both sides of the through holes provided in the side swing arm.
4. The cab front suspension stabilizer bar assembly according to claim 1, characterized in that: The left lower bracket and the right lower bracket are respectively provided with oil cups, and the lubricant flows into the joint bearing radially through the oil cups. Gaskets are provided on both sides of the joint bearing to seal the lubricant in the joint bearing; a buffer device is provided on the outside of the gasket.
5. The cab front suspension stabilizer bar assembly according to claim 4, characterized in that: The buffer device includes an inner ring buffer block arranged on the inner side of the shaft head and an outer buffer block arranged on the outer side of the shaft head; a rubber pad is arranged on the outer side of the outer buffer block; threads are arranged inside the shaft heads at both ends of the stabilizer bar, and screws pass through the rubber pads and cooperate with the shaft head threads to axially press the two ends of the stabilizer bar onto the left lower bracket and the right lower bracket.
6. The cab front suspension stabilizer bar assembly according to any one of claims 1 to 5, characterized in that: A limit block is provided at the connection between the stabilizer bar and the side swing arm, and the limit block protrudes upward relative to the stabilizer bar.