CN110920758A - Double-torsion-bar overturning system for cab - Google Patents
Double-torsion-bar overturning system for cab Download PDFInfo
- Publication number
- CN110920758A CN110920758A CN201911404377.2A CN201911404377A CN110920758A CN 110920758 A CN110920758 A CN 110920758A CN 201911404377 A CN201911404377 A CN 201911404377A CN 110920758 A CN110920758 A CN 110920758A
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- China
- Prior art keywords
- torsion bar
- cab
- bracket
- overturning
- pin shaft
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D33/00—Superstructures for load-carrying vehicles
- B62D33/077—Superstructures for load-carrying vehicles characterised by the connection of the superstructure to the vehicle frame
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
- Body Structure For Vehicles (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The invention relates to a double-torsion-bar overturning system for a cab. The system comprises a left suspension bracket, a right suspension bracket, a left overturning bracket, a right overturning bracket, a left torsion bar, a right torsion bar, a left torsion bar force arm, a right torsion bar force arm, a left roller assembly and a right roller assembly, wherein the suspension bracket is connected with a cab through the overturning bracket, and the cab can overturn around a cushion pin shaft of the overturning bracket; the torsion bar drives the torsion bar force arm to twist, and the roller assembly is fixed with the cab and can roll on the guide rail section of the torsion bar force arm. The invention completes the connection between the frame and the cab through the suspension bracket, the overturning bracket, the torsion bar force arm and the roller assembly, so that the overturning operation force of the cab is small, and the left and right stress of the cab is uniform; the left overturning support is concentrically connected with the pin shaft through a soft pad and is provided with a bush, the contact area of the pin shaft and the bush is large, and the overturning resistance of the cab is small. The invention has the advantages of abundant operation space, good operation visual field, sufficient positioning and convenient installation, and effectively improves the assembly efficiency of the cab.
Description
Technical Field
The invention relates to a commercial vehicle, in particular to a double-torsion-bar overturning system of a cab.
Background
In the existing cab double-torsion-bar overturning system, the contact part of a torsion-bar force arm and a roller or a sliding block arranged on a cab is generally a plane, the direction of the supporting force of the torsion-bar force arm to the cab is always changed in the cab overturning process, so that a changed proportional relation exists between the torsion-bar torque and the equivalent torque of the torsion-bar torque relative to a cab overturning shaft, the cab overturning angle is not equal to the torsion-bar twisting angle, and when the cab has large mass, an overturning system with small overturning operation force cannot be designed.
In addition, when the existing cab double-torsion-bar overturning system is seen in side view, the connecting line of the centers of the left and right torsion bars is not parallel to the direction of the force of the torsion bar force arm on the cab, so that the left and right stress is always consistent in the cab overturning process, and left and right deflection can be generated.
Disclosure of Invention
In order to solve the problems, the invention provides a double-torsion-bar overturning system for a cab, which can ensure that the overturning operation force of the cab is small and the left and right stress of the cab is uniform.
The technical scheme adopted by the invention is as follows: a two torsion bar upset system of driver's cabin which characterized in that: the left suspension bracket is fixed on a frame at the bottom, and the top is connected with a cab through the left turning bracket; the bottom of the right suspension bracket is fixed on the frame, the top of the right suspension bracket is connected with the cab through the right overturning bracket, and the cab can overturn around the cushion pin shafts of the left overturning bracket and the right overturning bracket;
one end of the left torsion bar is fixedly connected with the right suspension bracket through spline teeth, the other end of the left torsion bar penetrates through the left suspension bracket and is connected with one end of a left torsion bar force arm through the spline teeth to drive the left torsion bar force arm to twist, the other end of the left torsion bar force arm is provided with a left guide rail section, and the left roller assembly is fixed with the cab and can roll on the left guide rail section of the left torsion bar force arm; one end of the right torsion bar is fixed on the left suspension bracket through spline teeth, the other end of the right torsion bar penetrates through the right suspension bracket and is connected with one end of a right torsion bar force arm through the spline teeth to drive the right torsion bar force arm to twist, the other end of the right torsion bar force arm is provided with a right guide rail section, and the right roller assembly is fixed with the cab and can roll on the right guide rail section of the right torsion bar force arm.
Preferably, the left guide rail section and the right guide rail section are both cylindrical surfaces protruding upwards.
Preferably, the left guide rail section axis of the left guide rail section, the left roller axis of the left roller assembly, the cushion pin shaft axis of the left turning support and the left torsion bar axis of the left torsion bar form a parallelogram when being projected to the same side face; and the right guide rail section axis of the right guide rail section, the right roller axis of the right roller assembly, the cushion pin shaft axis of the right overturning bracket and the right torsion bar axis of the right torsion bar are projected to form a parallelogram when the same side surface is formed.
Furthermore, the axle center of the left overturning bracket, the axle center of the left torsion bar and the axle center of the right torsion bar are arranged on the same straight line.
Preferably, the left front suspension bracket and the right front suspension bracket are symmetrically arranged and have the same structure, and the left overturning bracket and the right overturning bracket have the same structure.
Furthermore, the left overturning support is provided with a mounting hole and a mounting frame, a cushion pin shaft and a bushing are arranged in the mounting hole, the cushion pin shaft penetrates through the cushion and the bushing and is mounted in the mounting hole, two ends of the cushion pin shaft penetrate out of the mounting hole, one end of the cushion pin shaft is limited through a Y-direction limiting structure on the cushion pin shaft, and the other end of the cushion pin shaft is limited through an elastic check ring for a shaft; the mounting frame is fixedly connected with the vehicle body through bolts.
Furthermore, through holes connected with the left suspension support or the right suspension support are formed in two ends of the cushion pin shaft, a threaded hole is formed in one end of the cushion pin shaft, and the surface where the threaded hole is located is perpendicular to the surface where the through hole is located; the middle part of the cushion pin shaft is provided with a cylindrical surface for installing the bush, one end of the cylindrical surface is provided with a clamping groove matched with the elastic check ring for the shaft, and the other end of the cylindrical surface is provided with a Y-direction limiting structure.
Furthermore, a positioning pin is arranged at one end of the cushion pin shaft, one end of the positioning pin is connected with the threaded hole, and the other end of the positioning pin is inserted into the Y-direction positioning hole in the left suspension support or the right suspension support.
Furthermore, an X positioning surface, a Z positioning surface, a threaded through hole and a Y-direction positioning hole are arranged on the left front suspension bracket and the right front suspension bracket.
The beneficial effects obtained by the invention are as follows: the invention has simple structure and convenient operation, completes the connection of the frame and the cab through the suspension bracket, the overturning bracket, the torsion bar force arm and the roller assembly, and can ensure that the overturning operation force of the cab is small and the left and right stress of the cab is uniform; the left overturning support is concentrically connected with the pin shaft through a soft pad and is provided with a bush, the contact area of the pin shaft and the bush is large, and the overturning resistance of the cab is small. The invention has the advantages of abundant operation space, good operation visual field, sufficient positioning and convenient installation, and effectively improves the assembly efficiency of the cab.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of FIG. 1;
FIG. 3 is a side view of FIG. 1;
FIG. 4 is an exploded view of the front mount and the flip mount;
FIG. 5 is a fragmentary exploded view of the inverted stand;
FIG. 6 is a schematic structural view of a cushion pin;
in the figure: 1. a left front mount; 11. a left X positioning plane; 12. a left Z location surface; 13. a left Y-direction positioning hole; 14. a left threaded through hole; 15. a left threaded through hole; 2. a right suspension bracket; 21. a right X positioning surface; 22. a right Z positioning plane; 23. a right Y-direction positioning hole; 24. a right threaded through hole; 25. a right threaded through hole; 3. turning the bracket left; 30. the axle center of the left overturning bracket; 31. a cushion pin shaft; 311. a through hole; 312. a threaded hole; 313. a via face; 314. a through hole vertical surface; 315. a card slot; 316. a Y-direction limiting structure; 32. a soft cushion; 33. a bushing; 34. a circlip for the shaft; 35. positioning pins; 4. a right flip bracket; 5. a left torsion bar; 51. the left torsion bar axle center; 6. a right torsion bar; 61. the right torsion bar axis; 7. a left torsion bar moment arm; 71. a left guide rail section; 72. the axle center of the left guide rail section; 8. a right torsion bar moment arm; 81. a right guide rail section; 82. the axle center of the right guide rail section; 9. a left roller assembly; 91. the axle center of the left roller; 10. a right roller assembly; .
Detailed Description
The invention will be further described with reference to the following drawings and specific embodiments.
As shown in fig. 1-3, the cab double-torsion bar turnover system of the present invention includes a left suspension bracket 1, a right suspension bracket 2, a left turnover bracket 3, a right turnover bracket 4, a left torsion bar 5, a right torsion bar 6, a left torsion bar force arm 7, a right torsion bar force arm 8, a left roller assembly 9 and a right roller assembly 10, wherein the bottom of the left suspension bracket 1 is fixed on a frame, and the top is connected to a cab through the left turnover bracket 3; the bottom of the right suspension bracket 2 is fixed on the frame, the top is connected with the cab through the right turning bracket 4, and the cab can turn around the axes of the cushion pin shafts 31 of the left turning bracket 3 and the right turning bracket 4 (the axes 30 of the left turning bracket in fig. 3);
one end of a left torsion bar 5 is fixedly connected with the right suspension bracket 2 through spline teeth, the other end of the left torsion bar penetrates through the left suspension bracket 1 and is connected with one end of a left torsion bar force arm 7 through the spline teeth to drive the left torsion bar force arm 7 to twist, the other end of the left torsion bar force arm 7 is provided with a left guide rail section 71, and a left roller assembly 9 is fixed with a cab and can roll on the left guide rail section 71 of the left torsion bar force arm 7; spline teeth at one end of a right torsion bar 6 are fixed on the left suspension bracket 1, the other end of the right torsion bar penetrates through the right suspension bracket 2 and is connected with one end of a right torsion bar force arm 8 through the spline teeth to drive the right torsion bar force arm 8 to twist, a right guide rail section 81 is arranged at the other end of the right torsion bar force arm 8, and a right roller assembly 10 is fixed with a cab and can roll on the right guide rail section 81 of the right torsion bar force arm 8.
In this embodiment, the left guide rail section 71 and the right guide rail section 81 are both cylindrical surfaces protruding upward. A left rail section axis 72 of the left rail section 71, a left roller axis 91 of the left roller assembly 9, a cushion pin axis of the left turning bracket 3 (i.e., the left turning bracket axis 30 shown in fig. 3) and a left torsion bar axis 51 of the left torsion bar 5 form a parallelogram when projected onto the same side surface; the right guide rail section axle center 82 of the right guide rail section 81, the right roller axle center of the right roller assembly 10, the cushion pin axle center of the right overturning bracket 4 and the right torsion bar axle center 61 of the right torsion bar 6 form a parallelogram when being projected to the same side surface. The left structure and the right structure are symmetrically arranged, so that the turnover angle of the cab can be ensured to be always equal to the rotation angle of the torsion bar in the turnover process, and the torsion bar torque is always equal to the equivalent torque of the torsion bar relative to the turnover center.
In this embodiment, the left turning bracket axis 31, the left torsion bar axis 51 and the right torsion bar axis 61 are arranged on a straight line, and under the condition that the left torsion bar 5 and the right torsion bar 6 are the same in size, the acting forces of the left torsion bar force arm 7 and the right torsion bar force arm 8 on the left roller assembly 9 and the right roller assembly 10 are the same in magnitude and direction, so that left-right balance in the process of turning the cab can be maintained.
As shown in fig. 4-6, the left suspension bracket 1 and the right suspension bracket 2 are symmetrically arranged and have the same structure, and the left turning bracket 3 and the right turning bracket 4 are symmetrically arranged and have the same structure.
The left overturning support 3 is provided with a mounting hole and a mounting frame, a cushion 32, a cushion pin 31 and a bush 33 are arranged in the mounting hole, the cushion pin 31 penetrates through the cushion 32 and the bush 33 and is mounted in the mounting hole, two ends of the cushion pin penetrate out of the mounting hole, one end of the cushion pin is limited by a Y-direction limiting structure 316 on the cushion pin 31, and the other end of the cushion pin is limited by an elastic collar 34 for a shaft; the mounting bracket is fixedly connected with the vehicle body through bolts.
The two ends of the cushion pin shaft 31 are provided with through holes 311 connected with the left suspension bracket 1 or the right suspension bracket 2, one end of the cushion pin shaft is provided with a threaded hole 312, and the surface (through hole vertical surface 314) where the threaded hole 312 is located is vertical to the surface (through hole surface 313) where the through hole 311 is located; the middle part of the cushion pin shaft 31 is provided with a cylindrical surface for installing the bushing 33, one end of the cylindrical surface is provided with a clamping groove 315 matched with the elastic collar 34 for the shaft, and the other end is provided with a Y-direction limiting structure 316. One end of the cushion pin 31 is provided with a positioning pin 35, one end of the positioning pin 35 is connected with the threaded hole 312, and the other end is inserted into the Y-direction positioning hole (the left Y-direction positioning hole 13 and the right Y-direction positioning hole 23) on the left suspension bracket 1 or the right suspension bracket 2.
In this embodiment, left turn over support 3 and cushion 32 installation, bush 33 and cushion 32 coaxial arrangement, cushion round pin axle 31 and bush 33 coaxial arrangement, cushion round pin axle 31 and the installation of axle circlip 34 joint, locating pin 35 and cushion round pin axle 31 threaded connection, left turn over support 3 and automobile body pass through bolted connection, cushion round pin axle 31 and left suspension support 1 and right suspension support 2 pass through bolted connection. The left suspension bracket 1 is provided with a left X positioning surface 11, a left Z positioning surface 12, left threaded through holes (14, 15) and a left Y-direction positioning hole 13, and the right suspension bracket 2 is provided with a right X positioning surface 21, a right Z positioning surface 22, right threaded through holes (24, 25) and a right Y-direction positioning hole 23. Through holes 311 are formed at two ends of the cushion pin 31, threaded holes 312 are formed on a vertical surface (through hole vertical surface 314) with the through hole surface 313, a clamping groove 315 is formed at one end of the cushion pin 31, and a Y-direction limiting structure 316 is formed at the other end of the cushion pin.
Before the cab is dropped and mounted on the suspension, the cushion 32 is firstly mounted in the left overturning bracket 3, and forms a small split assembly with the cushion pin shaft 31, the bushing 33, the elastic collar 34 for the shaft and the positioning pin 35, and the small split assembly is fixed at the bottom of the cab before the cab is dropped and mounted on the suspension system, the cushion pin shaft 31 is clamped with the elastic collar 34 for the shaft through the Y-direction limiting structure 316 at one side and the clamping groove 315 at the other side to complete Y-direction positioning, so that the cushion can only rotate around the shaft and can not move in the Y direction.
In the falling and installing process of the cab, left and right cushion pin shaft surfaces (313 and 314) fall on left and right front suspension bracket positioning surfaces (11 and 12) and (21 and 22) to complete X-direction and Z-direction positioning, and in the falling and installing process, left and right positioning pins 35 are respectively inserted into corresponding Y-direction positioning holes (13 and 23) of the left and right front suspension brackets to complete Y-direction positioning and fixing. And then, the left overturning bracket 3 is fixedly connected with the left and right front suspension brackets (1 and 2) through bolts, and the installation direction of the bolts is the direction X of the cab.
The foregoing shows and describes the general principles and principal structural features of the present invention. The present invention is not limited to the above examples, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A two torsion bar upset system of driver's cabin which characterized in that: the left suspension bracket is fixed on a frame at the bottom, and the top is connected with a cab through the left turning bracket; the bottom of the right suspension bracket is fixed on the frame, the top of the right suspension bracket is connected with the cab through the right overturning bracket, and the cab can overturn around the cushion pin shafts of the left overturning bracket and the right overturning bracket;
one end of the left torsion bar is fixedly connected with the right suspension bracket through spline teeth, the other end of the left torsion bar penetrates through the left suspension bracket and is connected with one end of a left torsion bar force arm through the spline teeth to drive the left torsion bar force arm to twist, the other end of the left torsion bar force arm is provided with a left guide rail section, and the left roller assembly is fixed with the cab and can roll on the left guide rail section of the left torsion bar force arm; one end of the right torsion bar is fixed on the left suspension bracket through spline teeth, the other end of the right torsion bar penetrates through the right suspension bracket and is connected with one end of a right torsion bar force arm through the spline teeth to drive the right torsion bar force arm to twist, the other end of the right torsion bar force arm is provided with a right guide rail section, and the right roller assembly is fixed with the cab and can roll on the right guide rail section of the right torsion bar force arm.
2. The cab dual torsion bar rollover system according to claim 1, wherein: the left guide rail section and the right guide rail section are both cylindrical surfaces protruding upwards.
3. The cab dual torsion bar rollover system according to claim 1, wherein: the left guide rail section axis of the left guide rail section, the left roller axis of the left roller assembly, the cushion pin shaft axis of the left turning support and the left torsion bar axis of the left torsion bar form a parallelogram when being projected to the same side face; and the right guide rail section axis of the right guide rail section, the right roller axis of the right roller assembly, the cushion pin shaft axis of the right overturning bracket and the right torsion bar axis of the right torsion bar are projected to form a parallelogram when the same side surface is formed.
4. The cab dual torsion bar rollover system according to claim 3, wherein: the axle center of the left overturning bracket, the axle center of the left torsion bar and the axle center of the right torsion bar are arranged on the same straight line.
5. The cab dual torsion bar rollover system according to claim 1, wherein: the left front suspension support and the right front suspension support are symmetrically arranged and have the same structure, and the left overturning support and the right overturning support are identical in structure.
6. The cab dual torsion bar rollover system according to claim 5, wherein: the left overturning support is provided with a mounting hole and a mounting frame, a cushion pin shaft and a bushing are arranged in the mounting hole, the cushion pin shaft penetrates through the cushion and the bushing and is mounted in the mounting hole, two ends of the cushion pin shaft penetrate out of the mounting hole, one end of the cushion pin shaft is limited through a Y-direction limiting structure on the cushion pin shaft, and the other end of the cushion pin shaft is limited through an elastic retaining ring for a shaft; the mounting frame is fixedly connected with the vehicle body through bolts.
7. The cab dual torsion bar rollover system according to claim 5, wherein: through holes connected with the left suspension bracket or the right suspension bracket are formed at two ends of the cushion pin shaft, a threaded hole is formed at one end of the cushion pin shaft, and the surface where the threaded hole is located is perpendicular to the surface where the through hole is located; the middle part of the cushion pin shaft is provided with a cylindrical surface for installing the bush, one end of the cylindrical surface is provided with a clamping groove matched with the elastic check ring for the shaft, and the other end of the cylindrical surface is provided with a Y-direction limiting structure.
8. The cab dual torsion bar rollover system according to claim 5, wherein: and one end of the cushion pin shaft is provided with a positioning pin, one end of the positioning pin is connected with the threaded hole, and the other end of the positioning pin is inserted into a Y-direction positioning hole in the left suspension support or the right suspension support.
9. The cab dual torsion bar rollover system according to claim 5, wherein: and the left front suspension bracket and the right front suspension bracket are respectively provided with an X positioning surface, a Z positioning surface, a threaded through hole and a Y-direction positioning hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911404377.2A CN110920758A (en) | 2019-12-30 | 2019-12-30 | Double-torsion-bar overturning system for cab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911404377.2A CN110920758A (en) | 2019-12-30 | 2019-12-30 | Double-torsion-bar overturning system for cab |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110920758A true CN110920758A (en) | 2020-03-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911404377.2A Pending CN110920758A (en) | 2019-12-30 | 2019-12-30 | Double-torsion-bar overturning system for cab |
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| Country | Link |
|---|---|
| CN (1) | CN110920758A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110316262A (en) * | 2019-07-26 | 2019-10-11 | 安徽安凯华夏汽车配件制造有限公司 | A kind of turnover device for automobile cab of more torsion bar linkages |
| CN114475819A (en) * | 2022-02-14 | 2022-05-13 | 东风柳州汽车有限公司 | Car and suspension structure thereof |
-
2019
- 2019-12-30 CN CN201911404377.2A patent/CN110920758A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110316262A (en) * | 2019-07-26 | 2019-10-11 | 安徽安凯华夏汽车配件制造有限公司 | A kind of turnover device for automobile cab of more torsion bar linkages |
| CN114475819A (en) * | 2022-02-14 | 2022-05-13 | 东风柳州汽车有限公司 | Car and suspension structure thereof |
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