CN111232064A - Cab front suspension structure and automobile - Google Patents
Cab front suspension structure and automobile Download PDFInfo
- Publication number
- CN111232064A CN111232064A CN202010073692.8A CN202010073692A CN111232064A CN 111232064 A CN111232064 A CN 111232064A CN 202010073692 A CN202010073692 A CN 202010073692A CN 111232064 A CN111232064 A CN 111232064A
- Authority
- CN
- China
- Prior art keywords
- turnover
- guide rail
- upper bracket
- front suspension
- assembly
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
- B62D33/0604—Cabs insulated against vibrations or noise, e.g. with elastic suspension
- B62D33/0608—Cabs insulated against vibrations or noise, e.g. with elastic suspension pneumatic or hydraulic suspension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/06—Drivers' cabs
- B62D33/063—Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other
- B62D33/067—Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other tiltable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/08—Superstructures for load-carrying vehicles comprising adjustable means
- B62D33/10—Superstructures for load-carrying vehicles comprising adjustable means comprising means for the suspension of the superstructure on the frame
Abstract
The invention discloses a cab front suspension structure and an automobile using the same, wherein the front suspension structure comprises a transverse stabilizer bar assembly, a shock absorber assembly, an upper bracket assembly, a lower bracket assembly and a lifting mechanism; one end of the upper bracket is connected with the upper end of the shock absorber, and the other end of the upper bracket is rotatably connected with the lifting mechanism; the upper bracket is provided with a first position and a second position which respectively correspond to a running state and a turning state; the lower bracket assembly comprises a turnover shaft and a turnover guide rail, the turnover guide rail is fixedly arranged at the upper part of the lower bracket assembly, the upper part of the turnover guide rail is provided with an arc-shaped guide surface, the turnover shaft is fixedly connected with the end part of the transverse stabilizing rod, and the lower end of the shock absorber and the middle part of the upper bracket assembly are connected with the turnover shaft or the transverse stabilizing rod; the lower part of the upper bracket assembly is fixedly connected with a turnover roller, and the turnover roller is provided with a curved surface which can move along the guide surface of the turnover guide rail in the process of switching the upper bracket assembly from a first position to a second position. The invention can realize guiding and gravity supporting in the overturning process and improve the stability of the cab in the overturning process.
Description
Technical Field
The invention relates to the technical field of automobiles and engineering machinery, in particular to a cab front suspension structure and an automobile.
Background
Cab suspension systems typically include shock absorbing structures, anti-roll structures, locking structures, roll-over structures, restraining structures, and other connecting members. The cab suspension system mainly has the following functions: the support function is used for bearing the weight of the cab assembly and passengers, avoiding generating larger relative displacement and guiding vertical movement relative to the chassis, and simultaneously ensuring the stable connection with the frame; the vibration isolation has good vibration isolation performance, so that vibration and impact transmitted by suspension and a frame during uneven road surface acceleration and braking are attenuated, low-frequency large shaking is avoided, and good vibration comfort is achieved; the cab is overturned through the movement mechanism and the hydraulic lifting system which are arranged in front of the cab, so that the engine system and the front suspension system below the cab can be conveniently overhauled.
Patent application CN201810882208 discloses a suspension structure before driver's cabin, and it mainly includes stabilizer bar assembly, upper bracket assembly, lower carriage assembly, rocking arm assembly and air bag bumper shock absorber assembly, and upper bracket assembly cooperation rocking arm assembly and stabilizer bar assembly can realize the upset of driver's cabin, and the lower carriage assembly supports, and air bag bumper shock absorber assembly can attenuate the vibrations that the frame transmitted to the driver's cabin. The cab suspension structure can better filter vibration excitation from uneven road surface and the driving braking process, has better supporting and large displacement limiting effects, and can realize the integral overturning function by combining the lifting oil cylinder. However, due to the elasticity of the airbag shock absorber and the characteristic that the airbag shock absorber can only bear vertical load, in the overturning process of the front cab, the airbag shock absorber system can bear the weight of the whole cab compared with the driving working condition, so that fatigue damage is easily caused, and meanwhile, the front suspension system can not avoid the lateral movement of the cab, so that low-frequency shaking can be caused, and the overturning process is unstable.
Disclosure of Invention
The invention aims to provide a cab front suspension structure and an automobile using the same, which can realize guiding and gravity supporting in the overturning process and improve the stability of the cab in the overturning process.
The technical scheme adopted by the invention is as follows:
in a first aspect, the invention provides a cab front suspension structure, which comprises a transverse stabilizer bar assembly, a shock absorber assembly, an upper bracket assembly, a lower bracket assembly and a lifting mechanism, wherein the transverse stabilizer bar assembly is arranged on the upper bracket assembly; one end of the upper bracket is connected with the upper end of the shock absorber, and the other end of the upper bracket is rotatably connected with the lifting mechanism; the upper bracket is provided with a first position and a second position which respectively correspond to a running state and a turning state;
the lower bracket assembly comprises a turnover shaft and a turnover guide rail, the turnover guide rail is fixedly arranged at the upper part of the lower bracket assembly, the upper part of the turnover guide rail is provided with an arc-shaped guide surface, the turnover shaft is fixedly connected with the end part of the transverse stabilizing rod, and the lower end of the shock absorber and the middle part of the upper bracket assembly are connected with the turnover shaft or the transverse stabilizing rod;
the lower part of the upper bracket assembly is fixedly connected with a turnover roller, and the turnover roller is provided with a curved surface which can move along the guide surface of the turnover guide rail in the process of switching the upper bracket assembly from a first position to a second position.
Optionally, a boss is further disposed on a side portion of the guide surface of the turnover guide rail. The boss can be arranged on one side or two sides, and the lateral shaking of the cab can be avoided.
Optionally, the side surface of the lower part of the turnover guide rail, which faces the lifting mechanism, is a vertical plane; when the upper bracket is located at the first position, an interference preventing gap is arranged between the overturning roller and the vertical plane. The vertical plane is smoothly connected with the arc-shaped guide rail surface at the upper part of the guide rail.
Optionally, the guide surface of the turning guide rail is an arc surface with the turning shaft as the center; in the process that the upper bracket is switched from the first position to the second position, the moving track of the turnover roller is an arc taking the turnover shaft as the center; and the distance from the center of the turning roller to the turning shaft is equal to the sum of the radius of the turning roller and the radius of the guide rail surface. Can guarantee that the upset gyro wheel is tangent in case with the guide rail surface contact, along with lifting drive of lifting mechanism, the guide rail surface roll that the upset guide rail can be followed to the upset gyro wheel, can realize the direction, can reduce the tired impaired of damper on can conducting the weight of upper bracket top driver's cabin to the upset guide rail simultaneously.
The part of the guide rail surface, which is adjacent to the vertical plane, can be arranged according to the width of the interference preventing gap, so that when the overturning roller is at the running position, the central connecting line of the overturning shaft and the overturning roller does not pass through the overturning guide rail surface.
Optionally, a shock pad is arranged on the surface of the turnover guide rail; the lateral part of one side of the lug boss of the turnover guide rail, which faces the guide rail, is provided with a cushion pad. The shock pad can adopt metal alloy damping shock pad, can cushion the vertical vibration of upset process. The cushion pad can adopt the rubber pad, can cushion the lateral vibration of reversal process.
Optionally, the roll-over guide rail and the lower bracket are integrally formed. Can ensure higher strength to bear the weight of the whole cab in the overturning process.
Optionally, the turning roller is fixedly connected with the upper bracket assembly through an integrally formed mounting plate, and the part of the turning roller, which can be in contact with the guide rail surface, is a ring with the thickness of 90 mm.
Optionally, the lower end of the shock absorber is fixedly connected with the overturning shaft, and the middle part of the upper bracket assembly is rotatably connected with the overturning shaft. Because the trip shaft is fixed setting at stabilizer bar both ends, consequently the stabilizer bar assembly can also be connected to bumper shock absorber lower extreme and upper bracket assembly.
Optionally, the shock absorber in the shock absorber assembly is an air spring.
In a second aspect, the present invention further provides an automobile, comprising a cab and the front suspension structure of the first aspect, wherein the cab is mounted on an upper bracket assembly in the front suspension structure.
Advantageous effects
According to the invention, the overturning guide rail and the overturning roller are matched, so that the weight of the cab in the overturning process can be transferred to the overturning guide rail, and the overturning roller connected with the upper bracket assembly can move along the guide rail surface until the overturning is completed, namely the guiding in the cab overturning process is realized. Therefore, the invention can realize the steering of the cab turnover, improve the turnover stability, simultaneously transfer the weight effect on the shock absorber in the cab turnover process and reduce the fatigue damage.
In addition, through set up the boss at the guide rail face lateral part to and set up shock pad, blotter at guide rail face and boss lateral part, can reduce vertical and lateral vibration, thereby can further improve the stability of upset process.
Drawings
FIG. 1 is a perspective view of a front suspension structure according to the present invention;
FIG. 2 is a schematic left side view of the front suspension structure of FIG. 1;
FIG. 3 is a schematic view showing positions of the roll-over guide rail and the roll-over roller in a driving state;
FIG. 4 is a schematic view showing a state where the turning guide surface is in contact with the turning roller during turning;
in fig. 1-4: 1-lower support, 2-turnover shaft, 3-air spring, 4-upper support, 5-height valve, 6-limiting block, 7-stabilizing rod, 8-lifting oil cylinder, 9-turnover guide rail, 10-turnover roller, 11-boss and 12-rubber pad.
Detailed Description
The following further description is made in conjunction with the accompanying drawings and the specific embodiments.
Example 1
Referring to fig. 1 to 4, the present embodiment is a cab front suspension structure, including a stabilizer bar assembly, a shock absorber assembly, an upper bracket assembly, a lower bracket assembly, and a lifting mechanism, which respectively include a stabilizer bar 7, a shock absorber (air spring) 3, an upper bracket 4, a lower bracket 1, and a lifting cylinder 8; one end of the upper bracket 4 is connected with the upper end of the shock absorber 3, and the other end is rotatably connected with a lifting mechanism (a lifting oil cylinder); the upper bracket 4 has a first position and a second position corresponding to the driving state and the turning state, respectively;
the lower bracket assembly also comprises a turning shaft 2 and a turning guide rail 9, the turning guide rail 9 is fixedly arranged at the upper part of the lower bracket assembly, the upper part of the turning guide rail 9 is provided with an arc-shaped guide surface, the turning shaft 2 is fixedly connected with the end part of the transverse stabilizer bar 7, and the lower end of the shock absorber 3 and the middle part of the upper bracket 4 are connected with the turning shaft 2 or the transverse stabilizer bar 7;
the lower part of the upper bracket assembly is fixedly connected with a turnover roller 10, and the turnover roller 10 is provided with a curved surface which can move along the guide surface of the turnover guide rail 9 in the process of switching the upper bracket assembly from the first position to the second position.
Examples 1 to 1
In the present embodiment, referring to fig. 1 and 2, an air spring is used as a shock absorber 3 in a shock absorber assembly according to embodiment 1. The lower end of the shock absorber is fixedly connected with the turning shaft 2, and the middle part of the upper bracket assembly is rotatably connected with the turning shaft 2 through a stabilizer bar assembly part. Because the turning shaft is fixedly arranged at two ends of the transverse stabilizer bar, the lower end of the shock absorber 3 and the upper bracket assembly can also be connected with the transverse stabilizer bar assembly.
The turning guide rail 9 and the lower bracket are integrally formed. The overturning roller 10 is fixedly connected with the upper bracket 4 through an integrally formed mounting plate, the part of the overturning roller, which can be contacted with the guide rail surface, is an opening circular ring with the thickness of the circular wall being 90mm, and two ends of the opening are integrally connected with L-shaped reinforcing ribs.
Referring to fig. 4, the guide surface side of the tumble guide rail 9 is also provided with a boss 11. The boss can be arranged on one side or two sides, and the lateral shaking of the cab can be avoided.
Referring to fig. 4, the side of the lower part of the turning guide rail 9 facing the lifting mechanism is a vertical plane; when the upper bracket 4 is located at the first position, an interference preventing gap is arranged between the overturning roller 10 and the vertical plane. The vertical plane is smoothly connected with the arc-shaped guide rail surface at the upper part of the turnover guide rail.
The guide surface of the turnover guide rail 9 is an arc surface with the turnover shaft 2 as the center; in the process that the upper bracket 4 is switched from the first position to the second position, the moving track of the turnover roller 10 is an arc taking the turnover shaft 2 as the center; and the distance from the center of the turnover roller 10 to the turnover shaft 2 is equal to the sum of the radius of the turnover roller 10 and the radius of the guide surface. Can guarantee that the upset gyro wheel is tangent in case with the contact of guide rail surface, along with lifting drive of lifting mechanism, the guide rail surface relative movement of upset guide rail can be followed to the upset gyro wheel, can realize the direction, can reduce the tired impaired of damper on can conducting the weight of upper bracket top driver's cabin to the upset guide rail simultaneously.
The part of the guide rail surface, which is adjacent to the vertical plane, can be arranged according to the width of the interference preventing gap, so that when the overturning roller is at the running position, the central connecting line of the overturning shaft and the overturning roller does not pass through the overturning guide rail surface.
The surface of the turnover guide rail 9 is provided with a shock pad. The shock pad can adopt metal alloy damping shock pad, can cushion the vertical vibration of upset process.
The lateral part of one side of the lug boss of the turnover guide rail, which faces the guide rail, is provided with a cushion pad 12. The cushion pad can adopt the rubber pad, can cushion the lateral vibration of reversal process.
As shown in fig. 1 and 3, the shock absorber assembly with the air spring for the front suspension structure of the cab is generally further provided with a height valve 5; in order to limit the turning position, a limiting block 6 is generally arranged.
In practical application:
when the automobile runs normally, the air spring assembly plays a role in shock absorption, and the height of the air spring can be adjusted through the height valve 5; a certain gap is formed between the upper support overturning roller 10 and the lower support overturning guide rail 9 in the front-rear direction of the driving, meanwhile, the vertical movement of the upper support overturning roller 10 has no interference with the lower support 1, and the upper support overturning roller 10 is not contacted with the lower support overturning guide rail 9 when the cab moves up and down in the driving process; the air spring is used for realizing buffering and shock absorption in the cab, so that the cab has higher comfort level;
when the cab is overturned, the limiting block plays a limiting role, the cab is driven by the lifting oil cylinder 8 to overturn to a specified position or a second position limited by the limiting block together with the transverse stabilizing rod 7 around the overturning shaft 2; in the process, the upper bracket overturning roller 10 firstly passes through a section of clearance stroke with the lower bracket overturning guide rail 9, then the upper bracket overturning roller and the lower bracket overturning guide rail are contacted, and then the upper bracket overturning roller 10 always moves relatively along the guide surface of the lower bracket overturning guide rail 9; meanwhile, the lateral low-frequency shaking of the cab is limited by the lug boss 11 arranged on the overturning guide rail, and the vertical and lateral vibration of the cab is buffered by the alloy damping shock pad on the surface of the guide rail and the rubber pad of the lug boss.
That is, the cab using the front suspension structure of the present embodiment has high stability in a normal driving state or a turning state, and can ensure a long service life of the air spring assembly.
Example 2
The present embodiment is an automobile including a cab and a cab front suspension structure, the cab front suspension structure is the same as that in embodiment 1, and the cab is mounted on an upper bracket assembly in the front suspension structure.
Example 3
The embodiment is a construction machine, which includes a cab and a cab front suspension structure, the cab front suspension structure adopts the embodiments of embodiment 1, and the cab is mounted on an upper bracket assembly in the front suspension structure.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A cab front suspension structure comprises a transverse stabilizer bar assembly, a shock absorber assembly, an upper support assembly, a lower support assembly and a lifting mechanism; one end of the upper bracket is connected with the upper end of the shock absorber, and the other end of the upper bracket is rotatably connected with the lifting mechanism; the upper bracket is provided with a first position and a second position which respectively correspond to a running state and a turning state; the method is characterized in that:
the lower bracket assembly comprises a turnover shaft and a turnover guide rail, the turnover guide rail is fixedly arranged at the upper part of the lower bracket assembly, the upper part of the turnover guide rail is provided with an arc-shaped guide surface, the turnover shaft is fixedly connected with the end part of the transverse stabilizing rod, and the lower end of the shock absorber and the middle part of the upper bracket assembly are connected with the turnover shaft or the transverse stabilizing rod;
the lower part of the upper bracket assembly is fixedly connected with a turnover roller, and the turnover roller is provided with a curved surface which can move along the guide surface of the turnover guide rail in the process of switching the upper bracket assembly from a first position to a second position.
2. The cab front suspension structure according to claim 1, characterized in that: the side part of the guide surface of the turnover guide rail is also provided with a boss.
3. The cab front suspension structure according to claim 1, characterized in that: the side surface of the lower part of the turnover guide rail, which faces the lifting mechanism, is a vertical plane; when the upper bracket is located at the first position, an interference preventing gap is arranged between the overturning roller and the vertical plane.
4. The cab front suspension structure according to any one of claims 1 to 3, characterized in that: the guide surface of the turnover guide rail is an arc surface taking the turnover shaft as the center; in the process that the upper bracket is switched from the first position to the second position, the moving track of the turnover roller is an arc taking the turnover shaft as the center; and the distance from the center of the turning roller to the turning shaft is equal to the sum of the radius of the turning roller and the radius of the guide rail surface.
5. The cab front suspension structure according to claim 1, characterized in that: the surface of the turnover guide rail is provided with a shock pad; the lateral part of one side of the lug boss of the turnover guide rail, which faces the guide rail, is provided with a cushion pad.
6. The cab front suspension structure according to claim 1, characterized in that: the turnover guide rail and the lower bracket are integrally formed.
7. The cab front suspension structure according to claim 1, characterized in that: the upset gyro wheel links firmly the upper bracket assembly through integrated into one piece's mounting panel, and the position that the upset gyro wheel can contact with the guide rail surface is 90mm thickness rings.
8. The cab front suspension structure according to claim 1, characterized in that: the lower end of the shock absorber is fixedly connected with the turnover shaft, and the middle part of the upper bracket assembly is rotatably connected with the turnover shaft.
9. The cab front suspension structure according to claim 1, characterized in that: and a shock absorber in the shock absorber assembly adopts an air spring.
10. An automobile comprising a cab and a front suspension as claimed in any one of claims 1 to 9, the cab being mounted on an upper bracket assembly in the front suspension.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010073692.8A CN111232064A (en) | 2020-01-22 | 2020-01-22 | Cab front suspension structure and automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010073692.8A CN111232064A (en) | 2020-01-22 | 2020-01-22 | Cab front suspension structure and automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111232064A true CN111232064A (en) | 2020-06-05 |
Family
ID=70866769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010073692.8A Pending CN111232064A (en) | 2020-01-22 | 2020-01-22 | Cab front suspension structure and automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111232064A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4300757A1 (en) * | 1993-01-14 | 1994-07-21 | Iveco Magirus | Pivot for tipping cab for truck |
| KR20060132108A (en) * | 2005-06-17 | 2006-12-21 | 현대자동차주식회사 | Cab tilting device of cab over truck |
| CN103950475A (en) * | 2014-04-02 | 2014-07-30 | 山东美晨科技股份有限公司 | Novel cab front suspension |
| CN108706055A (en) * | 2018-08-03 | 2018-10-26 | 北京北方凌云悬置系统科技有限公司 | A kind of heavy truck front suspension device for cab and automobile |
| CN208411893U (en) * | 2018-05-30 | 2019-01-22 | 安徽江淮汽车集团股份有限公司 | A kind of cabin front suspension sets assembly structure |
-
2020
- 2020-01-22 CN CN202010073692.8A patent/CN111232064A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4300757A1 (en) * | 1993-01-14 | 1994-07-21 | Iveco Magirus | Pivot for tipping cab for truck |
| KR20060132108A (en) * | 2005-06-17 | 2006-12-21 | 현대자동차주식회사 | Cab tilting device of cab over truck |
| CN103950475A (en) * | 2014-04-02 | 2014-07-30 | 山东美晨科技股份有限公司 | Novel cab front suspension |
| CN208411893U (en) * | 2018-05-30 | 2019-01-22 | 安徽江淮汽车集团股份有限公司 | A kind of cabin front suspension sets assembly structure |
| CN108706055A (en) * | 2018-08-03 | 2018-10-26 | 北京北方凌云悬置系统科技有限公司 | A kind of heavy truck front suspension device for cab and automobile |
Non-Patent Citations (1)
| Title |
|---|
| 中国船舶工业总公司: "《船舶设计实用手册》", 31 December 2002, 国防工业出版社 * |
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Application publication date: 20200605 |
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