Double-torsion-bar turnover mechanism for automobile cab
By designing a novel double torsion bar tilting mechanism, with the left and right torsion bars providing torque respectively, the problem of uneven force distribution on the cab floor is solved, achieving safe and reliable cab tilting and simplified installation.
Patent Information
- Application Number
- CN202520183664.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-06
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-02-06
AI Technical Summary
Existing double torsion bar tilting mechanisms for automobile cabs suffer from problems such as complex structure, high cost, and uneven stress on the cab floor leading to deformation or cracking.
A novel double torsion bar flipping mechanism is designed, in which the left and right torsion bars provide torque respectively. Torque adjustment is achieved through a symmetrical structure and torque adjustment bolts to avoid uneven force on one side. Rubber rings are used for shock absorption, simplifying the installation process and improving safety.
This ensures uniform stress distribution on the cab floor, preventing deformation or cracking, and improving the safety and ease of installation of the tilting mechanism.
Smart Images
Figure CN223750985U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of automobile parts, concretely, especially relates to a double torsion bar turnover mechanism of automobile cab. BACKGROUND
[0002] In order to be convenient for the maintenance and maintenance of vehicle, the light truck cab is generally designed to be forwardly overturned at present, and the turnover of the cab should be light and easy, and the supporting mechanism of the cab should be safe and reliable. The forward turnover mechanism is mainly divided into double torsion bar action and single torsion bar action according to the structure type. The double torsion bar is characterized in that the left and right shaft pipe arms provide torsion by different torsion bars, and the left and right forces of the cab are uniform, but the structure is complex, the cost is high, the cab and the double torsion bar forward turnover exist sliding devices, the floor is subjected to large force and is easy to deform, and meanwhile, the double torsion bar forward turnover mechanism does not have torsion adjusting bolts, so the size of the torsional moment cannot be flexibly adjusted like the single torsion bar. The single torsion bar is characterized in that the torsional moment is transmitted by a torsion bar, and the structure is simple, but the left and right skeletons of the cab floor are subjected to uneven force, and after installation, the cab is inclined due to uneven torsional moment, thereby affecting the assembly accuracy; and the cab floor is subjected to deformation or even cracking in the state of different left and right torsional moments for a long time.
[0003] In view of the above technical problems, the application provides a solution. UTILITY MODEL CONTENTS
[0004] The utility model wants to solve the technical problem of overcoming the deficiency of prior art, providing a double torsion bar turnover mechanism of automobile cab, which provides torsional moment for the cab assembly by left and right torsion bars, avoids providing single-side torsional moment by single torsion bar, and avoids the problem of cab cracking and deformation caused by uneven left and right force of the cab floor and frame.
[0005] The double torsion bar turnover mechanism of automobile cab, comprising a supporting forward turnover seat assembly, the supporting forward turnover seat assembly is internally fixedly connected with a rubber ring two, the novel double torsion bar forward turnover mechanism is a symmetrical structure, the two sides of the supporting forward turnover seat assembly are sequentially connected with a shaft pipe and a forward turnover seat assembly, the forward turnover seat assembly is internally fixedly connected with a rubber ring one, one end of the shaft pipe is rotationally connected with the rubber ring two, the other end of the shaft pipe is rotationally connected with the rubber ring one, the shaft pipe is fixedly connected with a cab support seat on the side close to the forward turnover seat assembly, the forward turnover seat assembly is rotationally connected with a torsional moment adjusting plate on one side, and the torsional moment adjusting plate is fixedly connected with a spline shaft sleeve.
[0006] Preferably, an arc-shaped slot is formed in the torsional moment adjusting plate, a torsional moment fixing bolt is slidably connected in the slot, the torsional moment fixing bolt is fixedly connected with the forward turnover seat assembly, the forward turnover seat assembly is screwedly connected with a torsional moment adjusting bolt on the side close to the torsional moment adjusting plate, and the torsional moment adjusting bolt abuts against the side surface of the torsional moment adjusting plate.
[0007] Preferably, the shaft tube is internally provided with a shaft tube spline sleeve near one side of the rubber ring, and the shaft tube is internally provided with a torsion bar assembly.
[0008] Preferably, the torsion bar assembly comprises a spline II matched with the shaft tube spline sleeve, one side of the spline II is fixedly connected with a torsion bar, one side of the torsion bar is fixedly connected with a spline I, the spline I is provided with a spline groove, the spline I is matched with the spline sleeve, the spline groove is fixedly connected with a limiting ring, one side of the limiting ring is abutted with the spline sleeve, and the limiting ring is in a "C" shape.
[0009] Preferably, the place where the shaft tube is matched with the rubber ring I and the rubber ring II is coated with lubricating grease.
[0010] Preferably, the front turnover seat assembly, the cab supporting seat and the supporting front turnover seat assembly are provided with a plurality of openings for being fixed with the vehicle body.
[0011] Compared with the prior art, the front turnover seat assembly of the utility model has the advantages that:
[0012] The left and right torsion bars respectively provide torque for the cab assembly, single torsion bar is avoided from providing single-side torque, and the problem that the cab floor and the vehicle frame are unevenly stressed and thus the cab is cracked and deformed is avoided; the three front turnover seat assemblies jointly bear the weight of the cab assembly, the left and right front turnover seats respectively provide torque to overcome the gravity moment of the cab, the force is dispersed, and the support safety of the front turnover assembly can be better improved; the installation steps are simplified, the installation difficulty is reduced, and the utility model is safer and more reliable. BRIEF DESCRIPTION OF DRAWINGS
[0013] Figure 1 It is a structural schematic view of the utility model;
[0014] Figure 2 It is a sectional view of the utility model;
[0015] Figure 3 It is a structural schematic view of the front turnover seat assembly and accessories thereof;
[0016] Figure 4 It is a structural schematic view of the shaft tube and the torsion bar assembly;
[0017] Figure 5 It is a specific structural schematic view of the torsion bar;
[0018] Figure 6 It is a structural schematic view of the supporting front turnover seat assembly;
[0019] Figure 7 It is a structural schematic view of the front turnover seat assembly and accessories thereof from another perspective.
[0020] In the figure, 1, front turnover seat assembly; 2, torque adjusting bolt; 3, limiting ring; 4, torsion bar assembly; 401, spline groove; 402, spline one; 403, torsion bar; 404, spline two; 5, torque adjusting plate; 501, spline shaft sleeve; 6, cab support seat; 7, shaft tube; 701, spline shaft sleeve of shaft tube; 8, support front turnover seat assembly; 9, torque fixing bolt; 10, rubber ring one; 11, rubber ring two. DETAILED DESCRIPTION
[0021] The utility model will be further explained in connection with the drawings:
[0022] The orientation terms involved in the paragraphs of detailed description are only for the convenience of the person skilled in the art to understand the technical solutions recorded in the present application according to the visual orientation shown in the drawings. Except for explicit provisions and limitations, the terms “setting”, “mounting”, “connecting” and the like should be understood broadly, and for the person skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0023] As Figures 1 to 7 shown, a double torsion bar turnover mechanism of a cab of a vehicle is responsible for overturning the driver's seat and overhauling the engine and other parts at the bottom of the driver's seat. It comprises a support front turnover seat assembly 8, which is fixedly connected with a rubber ring two 11 inside. The novel double torsion bar front turnover mechanism is of symmetrical structure, and the support front turnover seat assembly 8 is sequentially connected with a shaft tube 7 and a front turnover seat assembly 1 on both sides. The front turnover seat assembly 1 is fixedly connected with a rubber ring one 10 inside. One end of the shaft tube 7 is rotatably connected with the rubber ring two 11, and the other end of the shaft tube 7 is rotatably connected with the rubber ring one 10. The shaft tube 7 is fixedly connected with a cab support seat 6 on the side close to the front turnover seat assembly 1. The front turnover seat assembly 1 is rotatably connected with a torque adjusting plate 5 on one side. The torque adjusting plate 5 is fixedly connected with a spline shaft sleeve 501. The rubber ring one 10 and the rubber ring two 11 can play a damping effect on the driver's seat.
[0024] An arc-shaped slot is formed in the torque adjusting plate 5, and a torque fixing bolt 9 is slidably connected in the slot. The torque fixing bolt 9 is fixedly connected with the front turnover seat assembly 1. By adjusting the tightness of the torque fixing bolt 9, the rotation and fixation of the torque adjusting plate 5 can be realized. The front turnover seat assembly 1 is threadedly connected with a torque adjusting bolt 2 on the side close to the torque adjusting plate 5. The torque adjusting bolt 2 abuts against the side surface of the torque adjusting plate 5. By rotating the torque adjusting bolt 2, the torsion adjustment of a torsion bar assembly 4 can be realized. The shaft tube 7 is provided with a spline shaft sleeve 701 inside on the side close to the rubber ring one 10. The shaft tube 7 is provided with the torsion bar assembly 4 inside. By rotating the torque adjusting plate 5, the torque on the torsion bar assembly 4 is adjusted, so that the appropriate turnover angle of the cab is realized, and the possibility of cracking of the driver's seat bottom plate is reduced.
[0025] The torsion bar assembly 4 comprises a spline two 404 matched with the spline shaft sleeve 701, one side of the spline two 404 is fixedly connected with a torsion bar 403, one side of the torsion bar 403 is fixedly connected with a spline one 402, the spline one 402 is provided with a spline groove 401, the spline one 402 is matched with the spline shaft sleeve 501, the spline groove 401 is fixedly connected with a limiting ring 3, one side of the limiting ring 3 is abutted with the spline shaft sleeve 501, and the limiting ring 3 is in a "C" shape. The limiting ring 3 prevents the torsion bar assembly 4 from being separated from the shaft tube 7 and plays a fixing role. The place matched with the rubber ring one 10 and the rubber ring two 11 of the shaft tube 7 is coated with lubricating grease, and the role is to reduce the friction generated when the shaft tube 7 rotates in the rubber ring one 10 and the rubber ring two 11 when the driver's seat is turned over. The front turnover seat assembly 1, the cab support seat 6 and the support front turnover seat assembly 8 are provided with a plurality of openings for fixing with the vehicle body, and the utility model can be fixed with the vehicle body through bolts.
[0026] During installation, the support front turnover seat assembly 8 is installed on the vehicle frame through bolts, the rubber ring two 11 is fixedly installed inside, and lubricating grease is coated in the middle of the rubber ring two 11. The cab is hoisted to the turnover state, the shaft tube 7 pushes the inside of the rubber ring two 11, and then the cab support seat 6 with the torsion bar assembly 4 and the shaft tube 7 are fixedly installed on the driver's seat through bolts. The outside of the shaft tube 7 is coated with lubricating grease, the shaft tube 7 is moved to the inside of the rubber ring one 10 on the front turnover seat assembly 1, and finally the front turnover seat assemblies 1 on both sides are fixedly installed on the vehicle frame through bolts. After installation, the rotating torque adjusting bolt 2 on both sides is adjusted, the torque adjusting bolt 2 pushes the torque adjusting plate 5, and then the torsion bar assembly 4 is pushed, the torsion angle of the torsion bar 403 is changed, the appropriate cab turnover angle is reached, and finally the torque fixing bolt 9 is tightened to fix the torsion bar 403.
[0027] Finally, although the present specification is described according to the embodiments, not every embodiment only contains one independent technical solution, and the description manner of the specification is only for the sake of clarity, and the person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be properly combined to form other embodiments that can be understood by the person skilled in the art.
Claims
1. A double torsion bar tilting mechanism for a car cab, comprising a front tilting support assembly (8), characterized in that: The support front tilting seat assembly (8) is internally fixedly connected to a rubber ring two (11). The new double torsion bar front tilting mechanism is a symmetrical structure. The support front tilting seat assembly (8) is connected to a shaft tube (7) and a front tilting seat assembly (1) in sequence on both sides. The front tilting seat assembly (1) is internally fixedly connected to a rubber ring one (10). One end of the shaft tube (7) is rotatably connected to the rubber ring two (11), and the other end of the shaft tube (7) is rotatably connected to the rubber ring one (10). The side of the shaft tube (7) near the front tilting seat assembly (1) is fixedly connected to a cab support seat (6). The side of the front tilting seat assembly (1) is rotatably connected to a torque adjustment plate (5). A spline bushing (501) is fixedly connected to the torque adjustment plate (5).
2. The double torsion bar tilting mechanism for an automobile cab according to claim 1, characterized in that: The torque adjustment plate (5) has an arc-shaped slot, and a torque fixing bolt (9) is slidably connected in the slot. The torque fixing bolt (9) is fixedly connected to the front tilting seat assembly (1). The front tilting seat assembly (1) is threadedly connected to a torque adjustment bolt (2) on the side near the torque adjustment plate (5). The torque adjustment bolt (2) abuts against the side of the torque adjustment plate (5).
3. The double torsion bar tilting mechanism for an automobile cab according to claim 1, characterized in that: The shaft tube (7) has a shaft tube spline bushing (701) inside on the side near the rubber ring (10), and the shaft tube (7) has a torsion bar assembly (4) inside.
4. The double torsion bar tilting mechanism for an automobile cab according to claim 3, characterized in that: The torsion bar assembly (4) includes a second spline (404) that mates with the spline bushing (701). A torsion bar (403) is fixedly connected to one side of the second spline (404), and a first spline (402) is fixedly connected to one side of the torsion bar (403). A spline groove (401) is provided on the first spline (402), which mates with the spline bushing (501). A retaining ring (3) is fixedly connected to the spline groove (401), and one side of the retaining ring (3) abuts against the spline bushing (501). The retaining ring (3) is C-shaped.
5. The double torsion bar tilting mechanism for an automobile cab according to claim 1, characterized in that: The joint between the shaft tube (7) and rubber ring one (10) and rubber ring two (11) is coated with grease.
6. The double torsion bar tilting mechanism for an automobile cab according to claim 1, characterized in that: The front tilting seat assembly (1), the cab support seat (6), and the front tilting support assembly (8) are provided with multiple openings for fixing to the vehicle body.