Steering column assembly and engineering machinery
By introducing universal joint connection and adjustable upper support structure into the directional column assembly, the problem of poor applicability of the existing directional column is solved, and the rigidity and operating comfort of the directional column are improved.
Patent Information
- Application Number
- CN202422506852.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-10-17
AI Technical Summary
The existing directional column structure is difficult to meet the operating comfort needs of different drivers, especially the rotation hinge point of the single tube column structure is lowered, resulting in insufficient stiffness and inconvenient operation.
A directional column assembly is designed, connecting the upper and lower sections of the steering columns through universal joints, and vertical long holes and arc slides are provided on the upper support, so as to achieve forward and backward swing and upward movement of the upper support by connecting pins and locking pins, and adjusting the posture of the directional machine.
It realizes flexible adjustment of the directional column, improves rigidity and operating comfort, and adapts to the use needs of different drivers.
Smart Images
Figure CN223132152U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a steering gear, and more specifically, to a steering column assembly and a construction machinery. Background Art
[0002] Most construction machinery still uses a steering gear for steering control when driving. Currently, a steering column usually consists of a single pipe column, a base, and shell accessories. For a steering column with adjustable angle, its rotation hinge point is arranged below and locked by a gas spring. When angle adjustment is required, the adjustment mechanism controls the expansion and contraction of the gas spring to achieve angle change. The single pipe column structure and the integral outer shell of the adjustable steering column are difficult to achieve up and down adjustment, which is not suitable for drivers of different heights and difficult to meet the operation comfort of different drivers. The rotation hinge point of the single pipe column structure is biased downward and far from the steering wheel. The long cantilever structure form makes its stiffness weak. Summary of the Utility Model
[0003] The technical problem to be solved by the utility model is the problem of the main attitude adjustment of the steering gear, and to provide a steering column assembly and a construction machinery.
[0004] A steering column assembly of the utility model includes an upper section of the steering column and a lower section of the steering column connected by a universal joint, and an upper support rotatably sleeved on the upper section of the steering column. In addition, it includes an upper bracket. The upper bracket has a connecting plate. The upper support has an installation surface that fits with the connecting plate. Two vertically long holes arranged at intervals are provided on the installation surface. A pin shaft hole and an arc chute centered on the pin shaft hole are provided on the connecting plate. A connecting pin shaft for pivotally connecting the connecting plate and the upper support is installed in one of the long holes and the pin shaft hole. A locking pin shaft for connecting the connecting plate and the upper support and having a locking device at its end is installed in the other long hole and the chute.
[0005] In the steering column assembly of the utility model, the chute is located above the pin shaft hole.
[0006] In the steering column assembly of the utility model, there are two connecting plates arranged in parallel, and the upper support is arranged between the two connecting plates.
[0007] In the steering column assembly of the utility model, the connecting plate has an installation part for the fixed installation of the upper bracket. The distance between the pin shaft hole and the installation part on the connecting plate is less than the distance between the chute and the installation part.
[0008] In the steering column assembly of the utility model, the upper bracket further includes a connecting piece for fixedly connecting the two connecting plates. Further, the connecting piece is connected to the connecting plate at a position adjacent to the installation part.
[0009] In the steering column assembly of the present utility model, the upper bracket further includes a housing mounting bracket, and the housing mounting bracket is fixedly connected to the connecting pin shaft and the locking pin shaft. Further, the housing mounting bracket includes a left bracket and a right bracket, and the left bracket and the right bracket are correspondingly fixedly connected to the left end and the right end of the connecting pin shaft and the locking pin shaft.
[0010] In the steering column assembly of the present utility model, the lower section of the steering column includes a spline sleeve with internal splines and a spline shaft telescopically sleeved on the spline sleeve, and the spline shaft is connected to the upper section of the steering column through a universal joint.
[0011] The technical solution for the present utility model to achieve its purpose is: a construction machinery, which has the aforementioned steering column assembly, and this construction machinery can be a loader, a grader, a roller, etc., which are machines that use a steering gear for steering control.
[0012] Compared with the prior art, in the present utility model, after the locking function of the locking pin shaft is released, the upper support can swing back and forth around the connecting pin shaft and move up and down along the long hole direction, so as to realize the adjustment of the steering gear in two directions. This structure is simple and reliable, and arranging the middle position of the rotation hinge point of the steering column improves the rigidity of the steering column. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic structural diagram of the steering column assembly of the present utility model.
[0014] Figure 2 is a schematic structural diagram of the upper bracket in the steering column assembly of the present utility model.
[0015] Figure 3 is a schematic structural diagram of the upper support in the steering column assembly of the present utility model.
[0016] Figure 4 is an installation schematic diagram of the housing mounting bracket in the steering column assembly of the present utility model.
[0017] Names and serial numbers of components in the figure:
[0018] Upper bracket 10, left connecting plate 11, right connecting plate 12, sliding groove 13, pin hole 14, installation part 15, connecting piece 16.
[0019] Upper support 20, upper long hole 21, lower long hole 22.
[0020] Upper section of the steering column 31, upper universal joint 32, spline sleeve 33, spline shaft 34, lower support 35, lower universal joint 36.
[0021] Housing mounting bracket 40, left bracket 41, right bracket 42.
[0022] Locking pin shaft 51 and connecting pin shaft 52.
[0023] Locking mechanism 61 and handle 62. Specific embodiments
[0024] The following describes the specific implementation manner with reference to the accompanying drawings.
[0025] As Figure 1 shown, the steering column assembly includes an upper steering column segment 31 and a lower steering column segment connected by a universal joint, an upper support 20 rotatably sleeved on the upper steering column segment 31, and further includes an upper bracket 10. The upper bracket 10 has a connecting plate, and the upper support 20 has a mounting surface that fits against the connecting plate 10. Two vertically elongated holes arranged at intervals are provided on the mounting surface. A pin shaft hole 14 and an arc-shaped chute 13 centered on the pin shaft hole 14 are provided on the connecting plate. A connecting pin shaft 52 for pivotally connecting the connecting plate and the upper support 20 is installed in one of the elongated holes and the pin shaft hole 14, and a locking pin shaft 51 for connecting the connecting plate and the upper support 20 and having a locking device at its end is installed in the other elongated hole and the chute 13.
[0026] Optionally, as Figure 2 shown, the upper bracket 10 has a left connecting plate 11 and a right connecting plate 12 fixedly connected by a connecting member 16. The left connecting plate 11 and the right connecting plate 12 are arranged in parallel, and the upper support 20 is arranged between the two left and right connecting plates. Pin shaft holes 14 and arc-shaped chutes 13 are provided on both the left connecting plate 11 and the right connecting plate 12. The pin shaft holes 14 and the chutes 13 on the left and right connecting plates are arranged symmetrically and correspondingly, and the chute 13 is centered on the pin shaft hole 14.
[0027] Mounting portions 15 are provided on both the left and right connecting plates for fixedly installing the upper bracket 10. The distance between the pin shaft hole 14 and the mounting portion 15 on both the left and right connecting plates is less than the distance between the chute 13 and the mounting portion 15.
[0028] In this embodiment, the connecting member 16 is a steel pipe, and its two ends are respectively fixedly connected to the left and right connecting plates to connect the left and right connecting plates into a whole. The connecting member 16 can adopt other forms, such as a plate member.
[0029] The connecting member 16 is connected to the left and right connecting plates at a position adjacent to the mounting portion 15, so that the left and right connecting plates can be elastically deformed better at the portion where the chute 13 is provided, and the upper support 20 is clamped under the action of the locking pin shaft 51.
[0030] As Figure 3As shown, the upper support 20 is generally tubular, and the upper section 31 of the steering column is rotatably arranged in its inner hole through a bearing. The upper support 20 has an installation surface, on which a long upper hole 21 and a long lower hole 22 are arranged at intervals up and down. The length direction of the long upper hole 21 and the long lower hole 22 is the axial direction of the upper section 31 of the steering column. After the steering column is installed on the vehicle, the directions of the long upper hole 21 and the long lower hole 22 are approximately vertical.
[0031] As Figure 1 Figure 4 As shown, the upper support 20 is arranged between the left and right connecting plates, and the installation surfaces on the left and right sides of the upper support 20 are correspondingly attached to the left and right connecting plates. The connecting pin shaft 52 is installed in the long lower hole and the pin hole, and both ends of the connecting pin shaft 52 have nuts or bolt heads. The connecting pin shaft 52 mainly functions as a pivot.
[0032] A locking pin shaft 51 is installed in the long upper hole 21 and the sliding groove 13. One end of the locking pin shaft 51 is installed with a locking device, which includes a locking mechanism 61 and a handle 62. The handle 62 is used to rotate the locking mechanism 61 to press or release the connecting plate. When the locking mechanism 61 presses the connecting plate, the left connecting plate 11 and the right connecting plate 12 press the upper support 20, so that the upper support 20 and the upper bracket 10 are fixedly connected. When the locking mechanism 61 releases the connecting plate, the upper support 20 can move up and down and swing back and forth relative to the upper bracket 10, so as to adjust the posture of the upper section 31 of the steering column.
[0033] The upper end of the upper section 31 of the steering column is fixedly connected to the steering wheel (not shown in the figure), and the lower end is connected to the lower section of the steering column through an upper universal joint 326. The lower section of the steering column includes a spline sleeve 33 with internal splines and a spline shaft 34 telescopically sleeved with the spline sleeve 33. The spline shaft 34 is connected to the upper section 31 of the steering column through an upper universal joint 32. The lower end of the spline sleeve 33 is connected to the rotating shaft of the steering gear through a lower universal joint 36, and the rotating shaft of the steering gear is rotatably installed in the lower support 35.
[0034] The upper bracket 10 further includes a housing mounting bracket 40, and the housing mounting bracket 40 is fixedly connected to the connecting pin shaft 52 and the locking pin shaft 51. Optionally, as Figure 1 Figure 4 shown, the housing mounting bracket 40 includes a left bracket 41 and a right bracket 42. The left bracket 41 is fixedly connected to the left ends of the connecting pin shaft 52 and the locking pin shaft 51, and the right bracket 42 is fixedly connected to the right ends of the connecting pin shaft 52 and the locking pin shaft 51. The housing covering the steering column assembly can be divided into an upper housing and a lower housing. The lower housing is fixedly installed, and the upper housing is fixedly connected to the housing mounting bracket and moves with the movement of the upper support.
[0035] In the present utility model, after the locking function of the locking pin shaft is released, the upper support can swing back and forth around the connecting pin shaft and move up and down along the direction of the long hole, so as to realize the adjustment of the steering gear in two directions. This structure is simple and reliable, and the rigidity of the steering gear column is improved by arranging the middle position of the rotary hinge point of the steering column.
[0036] This embodiment provides a construction machinery, which has the aforementioned steering gear column assembly. The construction machinery can be a loader, a grader, a roller, or other machinery that uses a steering gear for steering control.
Claims
1. A steering column assembly, comprising an upper section of the steering column and a lower section of the steering column connected by a universal joint, and an upper support rotatably sleeved on the upper section of the steering column, characterized in that, It further includes an upper bracket. A connecting plate is provided on the upper bracket. An installation surface that fits with the connecting plate is provided on the upper support. Two vertically elongated holes arranged at intervals are provided on the installation surface. A pin shaft hole and an arc-shaped sliding groove centered on the pin shaft hole are provided on the connecting plate. A connecting pin shaft for pivotally connecting the connecting plate and the upper support is installed in one of the elongated holes and the pin shaft hole. A locking pin shaft for connecting the connecting plate and the upper support and having a locking device at its end is installed in the other elongated hole and the sliding groove.
2. The steering column assembly according to claim 1, characterized in that, The sliding groove is located above the pin shaft hole.
3. The steering column assembly according to claim 1 or 2, characterized in that, There are two connecting plates arranged in parallel, and the upper support is arranged between the two connecting plates.
4. The steering column assembly according to claim 3, wherein, The connecting plate has an installation portion for fixedly installing the upper bracket, and the distance between the pin shaft hole and the installation portion on the connecting plate is less than the distance between the sliding groove and the installation portion.
5. The steering column assembly according to claim 4, characterized in that, The upper bracket further includes a connecting member for fixedly connecting the two connecting plates.
6. The steering column assembly according to claim 5, characterized in that, The connecting member is connected to the connecting plate at a position adjacent to the installation portion.
7. The steering column assembly according to claim 1, characterized in that, The upper bracket further includes a housing mounting bracket, and the housing mounting bracket is fixedly connected to the connecting pin shaft and the locking pin shaft.
8. The steering column assembly according to claim 7, characterized in that, The housing mounting bracket includes a left bracket and a right bracket, and the left bracket and the right bracket are correspondingly fixedly connected to the left end and the right end of the connecting pin shaft and the locking pin shaft.
9. The steering column assembly according to claim 1, wherein The lower section of the steering column includes a spline sleeve with an internal spline and a spline shaft telescopically sleeved with the spline sleeve, and the spline shaft is connected to the upper section of the steering column through a universal joint.
10. An engineering machinery, characterized in that, It has the steering column assembly according to any one of claims 1 to 9.