CN219619248U - Bushing assembly and cab front suspension overturning arm connecting structure - Google Patents
Bushing assembly and cab front suspension overturning arm connecting structure Download PDFInfo
- Publication number
- CN219619248U CN219619248U CN202320555988.2U CN202320555988U CN219619248U CN 219619248 U CN219619248 U CN 219619248U CN 202320555988 U CN202320555988 U CN 202320555988U CN 219619248 U CN219619248 U CN 219619248U
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- rubber
- inner ring
- compression bolt
- rubber inner
- front suspension
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- 239000000725 suspension Substances 0.000 title claims abstract description 50
- 229920001971 elastomer Polymers 0.000 claims abstract description 162
- 238000007906 compression Methods 0.000 claims abstract description 55
- 230000006835 compression Effects 0.000 claims abstract description 54
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims description 20
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 9
- 230000002159 abnormal effect Effects 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 7
- 238000002955 isolation Methods 0.000 description 7
- 239000010410 layer Substances 0.000 description 7
- 238000004073 vulcanization Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000013011 mating Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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Abstract
The utility model relates to the technical field of commercial vehicle cab suspension systems, in particular to a bushing assembly and a cab front suspension overturning arm connecting structure, which comprises a rubber inner ring, an outer cylinder sleeved outside the rubber inner ring and a connecting rubber part arranged between the rubber inner ring and the outer cylinder; the rubber inner ring, the connecting rubber part and the outer cylinder are integrally formed; both ends of the rubber inner ring in the axial direction extend out of the outer cylinder and are used for being abutted with a support plate of the front suspension support; the rubber inner ring is provided with a first inner hole extending along the axial direction, and the two support plates clamp the two ends of the rubber inner ring by penetrating the compression bolt into the first inner hole and enabling the compression bolt to be matched with the nut; the flexible contact between the rubber inner ring and the inner walls of the two support plates replaces the rigid contact between the end face of the limit sleeve or the step face of the compression bolt and the inner walls of the two support plates in the prior art, so that the technical problem that abrasion between the end face of the limit sleeve or the step face of the compression bolt and the inner walls of the two support plates can cause abrasion gaps in the axial direction of the compression bolt is solved.
Description
Technical Field
The utility model relates to the technical field of commercial vehicle cab suspension systems, in particular to a bushing assembly and a cab front suspension overturning arm connecting structure.
Background
At present, a connecting structure of a front suspension system of a commercial vehicle cab generally adopts a vibration isolation elastic element, the vibration isolation elastic element is mainly a bushing assembly, the existing bushing assembly mainly comprises a metal inner cylinder, a metal outer cylinder and a rubber filling structure, a rubber bushing is generally pressed into a turning arm seat hole in an interference manner through a press-fit tool during installation, then two support plates (generally U-shaped supports) of a front suspension support are sleeved on two sides of the turning arm seat hole, one side of the front suspension support is penetrated into an inner hole of the rubber bushing through a pressing bolt pin shaft, and the other side of the front suspension support is screwed by a nut;
in the existing cab front suspension overturning arm connecting structure, the limit of the crotch size between two support plates is generally realized by arranging a limit sleeve in a rubber bushing or arranging a step surface on a compression bolt; when the compression bolt and the nut are matched and screwed, the front suspension bracket is clamped on the compression bolt or the limiting sleeve, so that the front suspension bracket and the turnover arm are locked; after the compression bolt is loosened, the overturning arm can rotate around the hinge point by taking the compression bolt as the hinge point; however, in the existing connecting structure of the front suspension overturning arm of the cab, the end face of the limiting sleeve or the step face of the compression bolt is in rigid contact with the inner walls of the two support plates, and in the running process of the vehicle, jolting caused by road surface impact can cause micro-displacement at the contact part of the end face of the limiting sleeve or the step face of the compression bolt and the inner walls of the two support plates, so that friction is continuously generated between the end face of the limiting sleeve or the step face of the compression bolt and the inner walls of the two support plates; the paint layer attached to the surface of the contact part can be separated along with the time, the galvanized layer on the end surface of the limit sleeve (or the step surface of the compression bolt) can be worn and shed simultaneously, the wear between the galvanized layer and the galvanized layer can cause the abrasion gap to be generated in the axial direction of the compression bolt, so that the tightening moment of the nut matched with the compression bolt can also gradually reduce failure, finally, looseness is generated between the compression bolt and the inner hole of the bushing assembly, vibration abnormal noise can be generated and the abrasion is increased when the road vibration is conducted to the connecting structure, the aperture of the associated via hole can be enlarged along with the increase of the abrasion, the abnormal noise can be gradually amplified, the comfort of the whole automobile is influenced, the surface protection layer of the matching surface is worn and shed, and along with the influence of water vapor, the appearance is also rusted.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides the bushing assembly and the cab front suspension turning arm connecting structure to solve the problems that in the existing cab front suspension turning arm connecting structure, the end face of the limit sleeve or the step face of the compression bolt is in rigid contact with the inner walls of the two support plates, abrasion between the end face of the limit sleeve or the step face of the compression bolt and the inner walls of the two support plates can cause abrasion clearance in the axial direction of the compression bolt, so that the tightening moment of a nut matched with the compression bolt can gradually reduce failure, loosening is finally caused between the compression bolt and an inner hole of the bushing assembly, vibration abnormal sound is generated when road vibration is conducted to the connecting structure, abrasion is aggravated, the aperture of an associated via hole is enlarged along with the aggravation of abrasion, the abnormal sound is gradually amplified, the comfort of the whole cab is influenced, the surface protection layer of the mating surface is abraded and falls off, and along with the influence of water vapor, and the technical problem of the appearance of corrosion is also caused.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
a bushing assembly, comprising: the rubber inner ring, the outer cylinder sleeved outside the rubber inner ring and the connecting rubber part arranged between the rubber inner ring and the outer cylinder;
the rubber inner ring, the connecting rubber part and the outer cylinder are integrally formed;
both ends of the rubber inner ring in the axial direction extend out of the outer cylinder and are used for being abutted with a support plate of the front suspension support; the rubber inner ring is provided with a first inner hole extending along the axial direction, and the first inner hole is used for penetrating the compression bolt; the outer cylinder is used for being installed in the installation hole of the turning arm.
The two ends of the rubber inner ring in the axial direction extend out of the rubber outer ring and the outer cylinder respectively and are abutted against the support plates on the same side of the rubber outer ring, so that when the compression bolt and the nut are matched for screwing, the two support plates of the front suspension support are clamped on the rubber inner ring, and the contact area between the two support plates of the front suspension support and the rubber inner ring is larger than that between the end face of the limit sleeve or the step face of the compression bolt and the inner walls of the two support plates in the prior art; and when jolting that the road surface impact brought causes two mounting plates with when taking place relative displacement between the rubber inner race, the rubber inner race can offset two mounting plates with relative displacement between the rubber inner race through torsion or deformation, in order to avoid wearing and tearing between the inner wall contact position of rubber inner race and two mounting plates, in having solved current cab front suspension upset arm connection structure, be rigid contact between spacing sleeve's terminal surface or hold-down bolt's step face and the inner wall of two mounting plates, wearing and tearing between the two can cause hold-down bolt axial direction to produce wearing and tearing clearance for the tightening moment with hold-down bolt complex nut also can reduce the inequality gradually, finally causes to produce to become flexible between hold-down bolt and the bush subassembly's the hole, can produce vibration abnormal sound and wearing and tearing when road surface vibration conduction to connection structure, the hole that associates also can enlarge the aperture along with the aggravation of wearing and tearing, abnormal sound also can gradually enlarge, influence the travelling comfort, and the cooperation face surface protection layer all drops, still can produce the corrosion and influence outward appearance technical problem.
Wherein the rubber inner ring, the connecting rubber part and the outer cylinder are integrally formed through a vulcanization process.
Further, the connecting rubber part comprises a plurality of connecting rubber blocks which are arranged at intervals around the circumference of the rubber inner ring.
Through making connect the rubber portion include a plurality of winds connect the rubber piece that the circumference interval set up of rubber inner circle, make adjacent two connect and form the cavity between the rubber piece, can reduce the whole weight of bush subassembly realizes the lightweight design, improves simultaneously the natural frequency of bush subassembly improves vibration isolation effect.
Further, the connecting rubber part further comprises a rubber outer ring, the outer peripheral surface of the rubber outer ring and the inner peripheral surface of the outer cylinder are integrally formed, the first end surfaces of the connecting rubber blocks are integrally formed with the inner peripheral surface of the rubber outer ring, and the second end surfaces of the connecting rubber blocks are integrally formed with the outer peripheral surface of the rubber inner ring.
By arranging the rubber outer ring, the bonding area between the connecting rubber part and the outer cylinder through a vulcanization process is increased, and the bonding strength between the connecting rubber part and the outer cylinder is enhanced.
Further, a plurality of protruding portions are arranged on the outer peripheral surface of the rubber inner ring, the protruding portions are arranged at intervals around the circumference of the rubber inner ring, and each protruding portion is arranged between two adjacent connecting rubber blocks.
Further, reinforcing ribs are arranged on the outer surface of the connecting rubber part.
Through setting up the strengthening rib, can effectively improve connect the intensity of rubber portion, improve the durability of bush subassembly.
Further, the rubber inner ring is in a straight prismatic shape.
The utility model also provides a cab front suspension overturning arm connecting structure, which comprises the bushing assembly, the compression bolt, the nut, the overturning arm and the front suspension bracket;
the front suspension bracket comprises two bracket plates, and the turning arm and the bushing assembly are arranged between the two bracket plates; the turning arm is provided with a mounting hole, the outer cylinder is sleeved in the mounting hole, and the outer circumferential surface of the outer cylinder is in interference fit with the inner circumferential surface of the mounting hole;
the compression bolt is used for penetrating through the first inner hole of the rubber inner ring and the two support plates;
the nut is used for being matched with the compression bolt, so that the two support plates clamp the two ends of the rubber inner ring.
Further, the connecting structure of the front suspension overturning arm of the cab further comprises two buffer washers, second inner holes matched with the outer peripheral surface of the rubber inner ring are formed in the buffer washers, and two ends of the rubber inner ring in the axial direction are respectively sleeved with one buffer washer.
Through setting up the cushion ring, the impact force that the flip arm brought to the front overhang support when the driver's cabin was the operating mode that heels can be buffered.
Further, a cotter pin is arranged on the screw rod of the compression bolt and used for preventing the nut from loosening.
Further, a limiting block is arranged on the support plate, which is close to the screw cap of the compression bolt, and a limiting surface is arranged on the outer circumferential surface of the screw cap of the compression bolt and is used for being matched with the limiting block so as to limit the rotation of the compression bolt around the central axis of the compression bolt.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of the construction of a bushing assembly in an embodiment;
FIG. 2 is a structural cross-sectional view of a bushing assembly in an embodiment;
FIG. 3 is a schematic view of a connecting structure of a front suspension arm in a cab in accordance with an embodiment;
FIG. 4 is a second schematic structural view of the cab front suspension rocker arm attachment structure in an embodiment;
FIG. 5 is a section A-A of FIG. 4;
FIG. 6 is a schematic view of the structure of a cushion ring in the embodiment;
FIG. 7 is a schematic view of the structure of a press bolt in the embodiment;
wherein, 1-turning arm, 2-front suspension bracket, 3-nut, 4-cotter pin, 5-compression bolt, 6-bushing component and 7-buffer gasket;
21-a support plate and 22-a limiting block;
51-a limiting surface, 52-a screw rod and 53-a pin hole;
61-an outer cylinder, 62-a rubber outer ring, 63-a connecting rubber block, 64-a rubber inner ring, 65-a first inner hole 631-a reinforcing rib and 641-a protruding part;
71-an outer end face, 72-a radial slot, 73-a second inner bore.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the examples described are only some, but not all, examples of the present utility model.
As shown in fig. 1 to 5, the present embodiment provides a bushing assembly 6 including: a rubber inner ring 64, an outer tube 61 fitted over the rubber inner ring 64, and a connection rubber portion provided between the rubber inner ring 64 and the outer tube 61;
the rubber inner ring 64, the connecting rubber portion and the outer cylinder 61 are integrally formed;
both ends of the rubber inner ring 64 in the axial direction extend out of the outer cylinder 61 and are used for abutting against the support plate 21 of the front suspension support 2; the rubber inner ring 64 is provided with a first inner hole 65 extending along the axial direction, and the first inner hole 65 is used for penetrating the compression bolt 5; the outer cylinder 61 is for mounting in a mounting hole of the invert arm 1.
By enabling the two ends of the rubber inner ring 64 in the axial direction to extend out of the rubber outer ring 62 and the outer cylinder 61 respectively and to be abutted against the support plates 21 on the same side of the rubber outer ring 62, when the compression bolt 5 is matched with the nut 3 for screwing, the two support plates 21 of the front suspension support 2 are clamped on the rubber inner ring 64, and the contact area between the two support plates 21 of the front suspension support 2 and the rubber inner ring 64 is larger than that between the end face of the limit sleeve or the step face of the compression bolt and the inner walls of the two support plates in the prior art; and when jolting that the road surface impact brought causes the relative displacement to take place between two mounting plates 21 and the rubber inner race 64, the rubber inner race 64 can offset the relative displacement between two mounting plates 21 and the rubber inner race 64 through torsion or deformation, in order to avoid wearing and tearing between the inner wall contact position of rubber inner race 64 and two mounting plates 21, in having solved current cab front suspension upset arm connection structure, be rigid contact between the step face of limit sleeve's terminal surface or clamp bolt and the inner wall of two mounting plates, wearing and tearing between the two can cause clamp bolt axial direction to produce wearing and tearing clearance, make the tightening moment with clamp bolt complex nut also can reduce the inequality gradually, finally cause to produce between clamp bolt and the hole of bush subassembly to become flexible, the road surface vibration can produce vibration abnormal sound and wearing and tearing when transmitting connection structure, the hole that associates also can enlarge the aperture along with wearing and tearing aggravation, the abnormal sound also can gradually enlarge, influence whole car travelling comfort, and the mating face surface protective layer all drops, along with the influence of steam, still can produce the corrosion and influence outward appearance technical problem.
Wherein the rubber inner ring 64, the connecting rubber portion and the outer tube 61 are integrally formed by a vulcanization process.
Wherein, as shown in fig. 1 and 2, the connecting rubber portion includes a plurality of connecting rubber blocks 63 arranged at intervals around the circumference of the rubber inner ring 64.
Through making connect rubber portion include a plurality of connection rubber pieces 63 that set up around the circumference interval of rubber inner race 64, make between two adjacent connection rubber pieces 63 form the cavity, can reduce the whole weight of bush subassembly 6, realize lightweight design, improve the natural frequency of bush subassembly 6 simultaneously, improve vibration isolation effect.
As shown in fig. 1 and 2, the connecting rubber portion further includes a rubber outer ring 62, an outer peripheral surface of the rubber outer ring 62 is integrally formed with an inner peripheral surface of the outer cylinder 61, first end surfaces of the connecting rubber blocks 63 are integrally formed with the inner peripheral surface of the rubber outer ring 62, and second end surfaces of the connecting rubber blocks 63 are integrally formed with an outer peripheral surface of the rubber inner ring 64.
By providing the rubber outer ring 62, the adhesion area between the connection rubber portion and the outer tube 61 by the vulcanization process is increased, and the adhesion strength between the connection rubber portion and the outer tube 61 is enhanced.
As shown in fig. 1, a plurality of protrusions 641 are provided on the outer circumferential surface of the inner rubber ring 64, and the plurality of protrusions 641 are arranged at intervals around the circumferential direction of the inner rubber ring 64, and each protrusion 641 is provided between two adjacent connecting rubber blocks 63.
Wherein, as shown in fig. 1 and 2, the reinforcing ribs 631 are provided on the outer surface of the connection rubber portion.
By providing the reinforcing ribs 631, the strength of the connecting rubber portion can be effectively improved, and the durability of the bushing assembly 6 can be improved.
Wherein, as shown in fig. 1, the rubber inner ring 64 has a straight prismatic shape.
As shown in fig. 3 to 5, the present embodiment also provides a cab front suspension tilting arm connection structure, including a bushing assembly 6 provided in the present embodiment, and a compression bolt 5, a nut 3, a tilting arm 1, and a front suspension bracket 2;
the front suspension bracket 2 comprises two bracket plates 21, and the turning arm 1 and the bushing assembly 6 are arranged between the two bracket plates 21; the turning arm 1 is provided with a mounting hole, the outer cylinder 61 is sleeved in the mounting hole, and the outer circumferential surface of the outer cylinder 61 is in interference fit with the inner circumferential surface of the mounting hole;
the compression bolt 5 is used for penetrating through the first inner hole of the rubber inner ring 64 and the two support plates 21;
the nut 3 is used for being matched with the compression bolt 5, so that two support plates 21 clamp two ends of the rubber inner ring 64.
As shown in fig. 1 and 3, the connecting structure of the front suspension tilting arm 1 of the cab further includes two cushion washers 7, the cushion washers 7 are provided with second inner holes 73 matching with the outer peripheral surface of the rubber inner ring 64, and two axial ends of the rubber inner ring 64 are respectively sleeved with one cushion washer 7.
By providing the cushion ring 7, the impact force of the tilting arm 1 on the front suspension bracket 2 during the cab tilting operation can be buffered.
As shown in fig. 6, the cushion ring 7 is made of NDI foamed polyurethane, a radial groove 72 is provided on an outer end face 71 of the cushion ring 7, and the outer end face 71 of the cushion ring 7 faces the inner side of the bracket plate 21 and is attached to the inner side of the bracket plate 21.
As shown in fig. 1, 2 and 6, since the inner rubber ring 64 has a straight prism shape, the second inner hole 73 is a polygonal inner hole that is fitted to the outer peripheral surface of the inner rubber ring 64.
Through making rubber inner circle 64 take the shape of a straight prism, the buffer washer 7 is provided with the second hole 73 that cooperatees with the outer peripheral face of rubber inner circle 64 for when the steering room is in the operating mode of being inclined, the impact force that tilting arm 1 brought to front overhang support 2, buffer washer 7 can not take place circumference rotation because of it around rubber inner circle 64, and influence vibration isolation performance.
As shown in fig. 3, 4, 5 and 7, the threaded rod 52 of the compression bolt 5 is provided with a cotter pin 4, and the cotter pin 4 is used for preventing the nut 3 from loosening; the screw 52 is provided with a pin hole 53 for the cotter pin 4 to pass through.
As shown in fig. 5 and 7, a limiting block 22 is provided on the support plate 21 near the nut of the compression bolt 5, and a limiting surface 51 is provided on the outer circumferential surface of the nut of the compression bolt 5, wherein the limiting surface 51 is used for being matched with the limiting block 22 to limit the rotation of the compression bolt 5 around the center thereof.
The cab front suspension overturning arm connecting structure and the front suspension assembly provided by the embodiment have at least the following technical effects or advantages:
1. by enabling the two ends of the rubber inner ring 64 in the axial direction to extend out of the rubber outer ring 62 and the outer cylinder 61 respectively and to be abutted against the support plates 21 on the same side of the rubber outer ring 62, when the compression bolt 5 is matched with the nut 3 for screwing, the two support plates 21 of the front suspension support 2 are clamped on the rubber inner ring 64, and the contact area between the two support plates 21 of the front suspension support 2 and the rubber inner ring 64 is larger than that between the end face of the limit sleeve or the step face of the compression bolt and the inner walls of the two support plates in the prior art; and when jolting that the road surface impact brought causes the relative displacement to take place between two mounting plates 21 and the rubber inner race 64, the rubber inner race 64 can offset the relative displacement between two mounting plates 21 and the rubber inner race 64 through torsion or deformation, in order to avoid wearing and tearing between the inner wall contact position of rubber inner race 64 and two mounting plates 21, in having solved current cab front suspension upset arm connection structure, be rigid contact between the step face of limit sleeve's terminal surface or clamp bolt and the inner wall of two mounting plates, wearing and tearing between the two can cause clamp bolt axial direction to produce wearing and tearing clearance, make the tightening moment with clamp bolt complex nut also can reduce the inequality gradually, finally cause to produce between clamp bolt and the hole of bush subassembly to become flexible, the road surface vibration can produce vibration abnormal sound and wearing and tearing when transmitting connection structure, the hole that associates also can enlarge the aperture along with wearing and tearing aggravation, the abnormal sound also can gradually enlarge, influence whole car travelling comfort, and the mating face surface protective layer all drops, along with the influence of steam, still can produce the corrosion and influence outward appearance technical problem.
2. Through making connect rubber portion include a plurality of connection rubber pieces 63 that set up around the circumference interval of rubber inner race 64, make between two adjacent connection rubber pieces 63 form the cavity, can reduce the whole weight of bush subassembly 6, realize lightweight design, improve the natural frequency of bush subassembly 6 simultaneously, improve vibration isolation effect.
3. By providing the rubber outer ring 62, the adhesion area between the connection rubber portion and the outer tube 61 by the vulcanization process is increased, and the adhesion strength between the connection rubber portion and the outer tube 61 is enhanced.
4. By providing the reinforcing ribs 631, the strength of the connecting rubber portion can be effectively improved, and the durability of the bushing assembly 6 can be improved.
5. By providing the cushion ring 7, the impact force of the tilting arm 1 on the front suspension bracket 2 during the cab tilting operation can be buffered.
6. Through making rubber inner circle 64 take the shape of a straight prism, the buffer washer 7 is provided with the second hole 73 that cooperatees with the outer peripheral face of rubber inner circle 64 for when the steering room is in the operating mode of being inclined, the impact force that tilting arm 1 brought to front overhang support 2, buffer washer 7 can not take place circumference rotation because of it around rubber inner circle 64, and influence vibration isolation performance.
The above is only a specific application example of the present utility model, and the protection scope of the present utility model is not limited at all, and the technical solution formed by adopting equivalent transformation or equivalent substitution falls within the protection scope of the present utility model.
Claims (10)
1. The bushing assembly is characterized by comprising a rubber inner ring, an outer cylinder sleeved outside the rubber inner ring and a connecting rubber part arranged between the rubber inner ring and the outer cylinder;
the rubber inner ring, the connecting rubber part and the outer cylinder are integrally formed;
both ends of the rubber inner ring in the axial direction extend out of the outer cylinder and are used for being abutted with a support plate of the front suspension support; the rubber inner ring is provided with a first inner hole extending along the axial direction, and the first inner hole is used for penetrating the compression bolt; the outer cylinder is used for being installed in the installation hole of the turning arm.
2. The bushing assembly as defined in claim 1, wherein: the connecting rubber part comprises a plurality of connecting rubber blocks which are arranged around the rubber inner ring at intervals in the circumferential direction.
3. A bushing assembly as defined in claim 2, wherein: the connecting rubber part further comprises a rubber outer ring, the outer peripheral surface of the rubber outer ring and the inner peripheral surface of the outer cylinder are integrally formed, the first end surfaces of the connecting rubber blocks are integrally formed with the inner peripheral surface of the rubber outer ring, and the second end surfaces of the connecting rubber blocks are integrally formed with the outer peripheral surface of the rubber inner ring.
4. A bushing assembly as defined in claim 2, wherein: the outer peripheral surface of the rubber inner ring is provided with a plurality of protruding portions, the protruding portions are arranged at intervals around the circumference of the rubber inner ring, and each protruding portion is arranged between two adjacent connecting rubber blocks.
5. A bushing assembly as defined in claim 2, wherein: and reinforcing ribs are arranged on the outer surface of the connecting rubber block.
6. The bushing assembly as defined in claim 1, wherein: the rubber inner ring is in a straight prismatic shape.
7. The utility model provides a cab front suspension upset arm connection structure which characterized in that: comprising a bushing assembly according to any one of claims 1-6, as well as a compression bolt, a nut, a tilting arm and a front suspension bracket;
the front suspension bracket comprises two bracket plates, and the turning arm and the bushing assembly are arranged between the two bracket plates; the turning arm is provided with a mounting hole, the outer cylinder is sleeved in the mounting hole, and the outer circumferential surface of the outer cylinder is in interference fit with the inner circumferential surface of the mounting hole;
the compression bolt is used for penetrating through the first inner hole of the rubber inner ring and the two support plates;
the nut is used for being matched with the compression bolt, so that the two support plates clamp the two ends of the rubber inner ring.
8. The cab front suspension rocker arm attachment structure according to claim 7, wherein: the novel rubber inner ring is characterized by further comprising two buffer gaskets, wherein second inner holes matched with the outer peripheral surface of the rubber inner ring are formed in the buffer gaskets, and one buffer gasket is sleeved at two ends of the rubber inner ring in the axial direction respectively.
9. The cab front suspension rocker arm attachment structure according to claim 7, wherein: and a cotter pin is arranged on the screw rod of the compression bolt and used for preventing the nut from loosening.
10. The cab front suspension rocker arm attachment structure according to claim 7, wherein: the support plate close to the screw cap of the compression bolt is provided with a limiting block, the outer circumferential surface of the screw cap of the compression bolt is provided with a limiting surface, and the limiting surface is used for being matched with the limiting block so as to limit the rotation of the compression bolt around the central axis of the compression bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320555988.2U CN219619248U (en) | 2023-03-21 | 2023-03-21 | Bushing assembly and cab front suspension overturning arm connecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320555988.2U CN219619248U (en) | 2023-03-21 | 2023-03-21 | Bushing assembly and cab front suspension overturning arm connecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219619248U true CN219619248U (en) | 2023-09-01 |
Family
ID=87772525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320555988.2U Active CN219619248U (en) | 2023-03-21 | 2023-03-21 | Bushing assembly and cab front suspension overturning arm connecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219619248U (en) |
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2023
- 2023-03-21 CN CN202320555988.2U patent/CN219619248U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A lining component and a connecting structure of the cab front suspension flipping arm Granted publication date: 20230901 Pledgee: Agricultural Bank of China Limited Shiyan Yunyang Branch Pledgor: DONGFENG SPECIAL PARTS Co.,Ltd. Registration number: Y2024980005588 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |