A multi-angle adjustment device for steering gear of engineering machinery

Abstract

This utility model discloses a multi-angle adjustment device for the steering gear of engineering machinery, including a base, a first connecting shell hinged to the base, a first electric push rod hinged between the first connecting shell and the base, a second connecting shell hinged to the first connecting shell, a second electric push rod hinged between the second connecting shell and the first connecting shell, a connecting drive shaft mounted on the base via bearings, a first drive shaft mounted inside the first connecting shell via bearings, a first universal joint between the connecting drive shaft and the first drive shaft, a second drive shaft mounted inside the second connecting shell via bearings, and a second universal joint between the second drive shaft and the first drive shaft. This utility model can improve the overall adjustment flexibility during use, and improve the comfort and convenience of use.

Description

Technical Field

[0001] This utility model relates to the field of steering gear technology, and more specifically, to a multi-angle adjustment device for steering gear of engineering machinery. Background Technology

[0002] The steering gear of construction machinery is a core control component of construction vehicles (such as excavators and loaders), used to precisely control the steering movements of the machinery. Its design must balance high strength, durability, and operational flexibility, and it typically employs hydraulic power steering or electronic control systems to reduce the driver's workload.

[0003] Currently, agricultural machinery steering systems generally adopt a fixed steering gear design, where the position and angle of the steering wheel cannot be adjusted according to actual needs. This rigid structure has significant drawbacks in actual operation: due to differences in height, body type, and operating habits among different operators, the fixed steering wheel position often fails to meet individual needs, forcing operators to adopt unnatural driving postures. Prolonged operation can easily lead to muscle fatigue, affecting not only operating comfort but also reducing steering accuracy and work efficiency. More seriously, this ergonomically incompatible design may cause operational errors, increase the risk of safety accidents, and ultimately cause unnecessary economic losses. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the problems existing in the prior art, this utility model provides a multi-angle adjustment device for the steering gear of engineering machinery, thereby solving the technical problem mentioned in the background art that the steering gear of engineering machinery has a fixed angle, which is not convenient for flexible adjustment of the practical angle according to the height and usage habits of the user.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A multi-angle adjustment device for a steering gear of engineering machinery includes a base, a first connecting shell hinged to the base, a first electric push rod hinged between the first connecting shell and the base, a second connecting shell hinged to the first connecting shell, a second electric push rod hinged between the second connecting shell and the first connecting shell, a connecting drive shaft mounted on the base via bearings, a first drive shaft mounted inside the first connecting shell via bearings, a first universal joint between the connecting drive shaft and the first drive shaft, a second drive shaft mounted inside the second connecting shell via bearings, and a second universal joint between the second drive shaft and the first drive shaft.

[0009] The present invention is further configured such that a first hinged fixing seat is provided on the base, and a first hinged connecting seat is provided at the bottom end of the first connecting shell. The first hinged connecting seat is rotatably hinged to the first hinged fixing seat, and the rotation axis of the first hinged connecting seat and the second hinged connecting seat matches the rotation axis of one end of the first universal joint. In this way, the steering gear of the engineering machinery can be flexibly adjusted at the first angle during use. The first angle can be a vertical or horizontal adjustment angle.

[0010] The present invention is further configured such that a second hinge fixing seat is provided on the first connecting shell, and a second hinge connecting seat is provided on the second connecting shell. The second hinge connecting seat is rotatably hinged to the second hinge fixing seat, and the rotation axis of the second hinge connecting seat and the second hinge fixing seat matches the rotation axis of one end of the second universal joint. This facilitates the flexible adjustment of the second angle of the steering gear of the engineering machinery during use. The second angle can be a vertical longitudinal adjustment angle.

[0011] The present invention is further configured such that a lifting seat is provided at the top end of the second transmission shaft, a lifting rod is provided on the lifting seat, and a lifting adjustment structure is provided between the lifting rod and the lifting seat.

[0012] The present invention is further configured such that the lifting adjustment structure includes a lifting groove, which is opened downward from the top of the lifting seat. A lifting motor is installed in the lifting groove, and a lifting screw is installed at the output end of the lifting motor. Preferably, the lifting screw is installed in the lifting groove through a bearing seat. The lifting rod is slidably located in the lifting groove and is connected to the lifting screw via transmission. When the lifting motor is started, the lifting screw can be controlled to run. The lifting rod can be adjusted in height within the lifting groove through the threaded engagement structure between the lifting screw and the lifting rod, and the sliding engagement structure between the lifting rod and the lifting groove. This allows for the adjustment of the lifting shaft located at the top of the lifting rod, and consequently, the adjustment of the steering wheel on the mounting shaft.

[0013] The present invention is further configured such that a mounting shaft is provided at the top end of the lifting rod, and the mounting shaft is used to mount the steering wheel.

[0014] The present invention is further configured such that a first telescopic protective cover is provided between the base and the first connecting shell, and the first telescopic protective cover is fitted over the outside of the first electric push rod. In this way, the sealing and protection effect at the connection between the base and the first connecting shell can be improved by the provision of the first telescopic protective cover.

[0015] The present invention is further provided with a second telescopic protective cover between the first connecting shell and the second connecting shell. The second telescopic protective cover is sleeved on the outside of the second electric push rod, which can enhance the sealing and protection effect at the connection between the first connecting shell and the second connecting shell.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a multi-angle adjustment device for the steering gear of engineering machinery, which has the following beneficial effects:

[0018] 1. This utility model uses a first electric push rod to drive the first connecting shell to swing laterally relative to the base (first angle adjustment), and a second electric push rod to drive the second connecting shell to swing longitudinally relative to the first connecting shell (second angle adjustment). Combined with a universal joint transmission structure, it realizes multi-angle adjustment of the steering gear in the horizontal and vertical directions, adapting to the needs of different operator postures or complex working conditions of engineering machinery.

[0019] 2. In this utility model, the lifting motor drives the screw to move the lifting rod in the lifting groove, thereby realizing the vertical height adjustment of the steering wheel. It works in conjunction with the multi-angle adjustment mechanism to form an all-round positional adaptation in three-dimensional space, which significantly improves the operating comfort and ergonomic performance.

[0020] 3. In this utility model, a first telescopic protective cover and a second telescopic protective cover are used to cover the electric push rod and the hinge part respectively, which effectively isolates external dust, mud and water and other pollutants, while avoiding mechanical interference and extending the service life of key moving parts. It is especially suitable for harsh working environments of engineering machinery. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a multi-angle adjustment device for the steering gear of engineering machinery according to this utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the overall structure of a multi-angle adjustment device for the steering gear of engineering machinery according to this utility model. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the mating structure between the base, the first connecting shell, and the second connecting shell in this utility model;

[0024] Figure 4 This is a cross-sectional schematic diagram of the internal transmission connection structure of the first connecting shell and the second connecting shell in this utility model;

[0025] Figure 5 This is a cross-sectional schematic diagram of the connection structure between the lifting seat and the lifting rod in this utility model.

[0026] In the diagram: 1. Base; 2. First connecting shell; 3. First electric push rod; 4. Second connecting shell; 5. Second electric push rod; 6. Connecting drive shaft; 7. First drive shaft; 8. First universal joint; 9. Second drive shaft; 10. Second universal joint; 11. First hinge fixing seat; 12. First hinge connecting seat; 13. Second hinge fixing seat; 14. Second hinge connecting seat; 15. Lifting seat; 16. Lifting rod; 17. Lifting groove; 18. Lifting motor; 19. Lifting screw; 20. Mounting shaft; 21. First telescopic protective cover; 22. Second telescopic protective cover. Detailed Implementation

[0027] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0029] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0030] Please see Figures 1-5 A multi-angle adjustment device for a steering gear of engineering machinery includes a base 1, a first connecting shell 2 hinged to the base 1, a first electric push rod 3 hinged between the first connecting shell 2 and the base 1, a second connecting shell 4 hinged to the first connecting shell 2, a second electric push rod 5 hinged between the second connecting shell 4 and the first connecting shell 2, a connecting drive shaft 6 mounted on the base 1 via bearings, a first drive shaft 7 mounted inside the first connecting shell 2 via bearings, a first universal joint 8 mounted between the connecting drive shaft 6 and the first drive shaft 7, a second drive shaft 9 mounted inside the second connecting shell 4 via bearings, and a second universal joint 10 mounted between the second drive shaft 9 and the first drive shaft 7.

[0031] Please see Figures 1-5As one embodiment of the base 1: a first hinge fixing seat 11 is provided on the base 1, and a first hinge connecting seat 12 is provided at the bottom end of the first connecting shell 2. The first hinge connecting seat 12 is rotatably hinged to the first hinge fixing seat 11, and the rotation axis of the first hinge connecting seat 12 and the second hinge connecting seat 14 matches the rotation axis of one end of the first universal joint 8. In this way, the first angle can be flexibly adjusted when the engineering machinery steering gear is in use. The first angle can be a vertical and horizontal adjustment angle.

[0032] Please see Figures 1-5 As one embodiment of the first connecting shell 2: a second hinge fixing seat 13 is provided on the first connecting shell 2, and a second hinge connecting seat 14 is provided on the second connecting shell 4. The second hinge connecting seat 14 is rotatably hinged to the second hinge fixing seat 13, and the rotation axis of the second hinge connecting seat 14 and the second hinge fixing seat 13 matches the rotation axis of one end of the second universal joint 10. In this way, it is convenient to realize the flexible adjustment of the second angle when the engineering machinery steering gear is used. The second angle can be a vertical longitudinal adjustment angle.

[0033] Please see Figures 1-5 As one embodiment of the second drive shaft 9: a lifting seat 15 is provided at the top of the second drive shaft 9, a lifting rod 16 is provided on the lifting seat 15 for lifting, and a lifting adjustment structure is provided between the lifting rod 16 and the lifting seat 15.

[0034] Please see Figures 1-5 As one embodiment of the lifting adjustment structure: the lifting adjustment structure includes a lifting groove 17, which is opened downward from the top of the lifting seat 15. A lifting motor 18 is installed in the lifting groove 17, and a lifting screw 19 is installed at the output end of the lifting motor 18. The lifting rod 16 is slidably located in the lifting groove 17 and is connected to the lifting screw 19 through transmission. When the lifting motor 18 is started, the lifting screw 19 can be controlled to run. Through the threaded engagement structure between the lifting screw 19 and the lifting rod 16 and the sliding engagement structure between the lifting rod 16 and the lifting groove 17, the lifting rod 16 can be adjusted in height within the lifting groove 17, thereby adjusting the height of the mounting shaft 20 located at the top of the lifting rod 16, and thus adjusting the height of the steering wheel on the mounting shaft 20.

[0035] Please see Figures 1-5 As one embodiment of the lifting rod 16: the top end of the lifting rod 16 is provided with a mounting shaft 20, which is used to mount the steering wheel.

[0036] Please see Figures 1-5As one embodiment of the base 1: a first telescopic protective cover 21 is provided between the base 1 and the first connecting shell 2. The first telescopic protective cover 21 is sleeved on the outside of the first electric push rod 3. In this way, the sealing and protection effect of the connection between the base 1 and the first connecting shell 2 can be improved by the provision of the first telescopic protective cover 21.

[0037] Please see Figures 1-5 As one embodiment of the first connecting shell 2: a second telescopic protective cover 22 is provided between the first connecting shell 2 and the second connecting shell 4. The second telescopic protective cover 22 is sleeved on the outside of the second electric push rod 5. In this way, the sealing and protection effect at the connection between the first connecting shell 2 and the second connecting shell 4 can be enhanced.

[0038] In summary:

[0039] This utility model uses a first electric push rod 3 to drive the first connecting shell 2 to swing laterally relative to the base 1 (first angle adjustment), and a second electric push rod 5 to drive the second connecting shell 4 to swing longitudinally relative to the first connecting shell 2 (second angle adjustment). Combined with the universal joint transmission structure, it realizes multi-angle adjustment of the steering gear in the horizontal and vertical directions to adapt to the needs of different operator postures or complex working conditions of engineering machinery.

[0040] In this invention, the lifting motor 18 drives the screw to move the lifting rod 16 within the lifting groove 17, thereby achieving vertical height adjustment of the steering wheel. Working in conjunction with the multi-angle adjustment mechanism, it forms an all-round positional adaptation in three-dimensional space, significantly improving operating comfort and ergonomic performance.

[0041] In this utility model, a first telescopic protective cover 21 and a second telescopic protective cover 22 are used to cover the electric push rod and the hinge part respectively, which effectively isolates external dust, mud and water and other pollutants, while avoiding mechanical interference and extending the service life of key moving parts. It is especially suitable for harsh working environments of engineering machinery.

[0042] In use, activating the first electric push rod 3 can control the first connecting shell 2 to rotate vertically and horizontally relative to the base 1. As a result, the first connecting shell 2 rotates, it will drive the first drive shaft 7 to rotate. The first universal joint 8 is used to realize the rotatable adjustable connection between the first drive shaft 7 and the connecting drive shaft 6 to ensure rotational transmission at different angles. The connecting drive shaft 6 is used to connect the wheel steering drive system, which is existing known technology and will not be described in detail in this utility model.

[0043] Similarly, during use, the second electric push rod 5 can be activated to control the second connecting shell 4 to rotate relative to the first connecting shell 2, thereby realizing the rotation adjustment of the second drive shaft 9 relative to the first drive shaft 7. The second universal joint 10 is used to ensure stable rotational transmission between the second drive shaft 9 and the first drive shaft 7.

[0044] Achieving stable rotational transmission during wheel rotation via a universal joint is a common practice in the field, and will not be elaborated upon in comparison to this utility model.

[0045] In this utility model, the top of the first connecting shell 2 can be integrated with a device shell for installing control buttons and other components. This is known in the prior art and will not be described in detail here.

[0046] In all the solutions mentioned above, the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

[0047] In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise specified, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their specific circuit structures will not be described in detail here.

[0048] Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies, and this utility model will not elaborate on them.

[0049] If any of the technical solutions mentioned above involve a synchronous belt drive structure, and there is no specific structure, they are all existing technologies involving the combination of synchronous belt and synchronous pulley. The connection between the synchronous belt and the shaft structure is a known technology and will not be elaborated upon in this utility model.

[0050] Of all the solutions mentioned above, those involving the connection between solar panels and batteries can be equipped with essential accessories such as inverters, battery charging controllers, cables, fuses, and brackets. Their control principles and circuit connections are all existing, well-known, and mature technologies, and their specific circuit structures will not be elaborated here.

Claims

1. A multi-angle adjustment device for the steering gear of engineering machinery, comprising a base (1), characterized in that: A first connecting shell (2) is hinged on the base (1). A first electric push rod (3) is hinged between the first connecting shell (2) and the base (1). A second connecting shell (4) is hinged on the first connecting shell (2). A second electric push rod (5) is hinged between the second connecting shell (4) and the first connecting shell (2). A connecting drive shaft (6) is provided on the base (1) through a bearing. A first drive shaft (7) is provided inside the first connecting shell (2) through a bearing. A first universal joint (8) is provided between the connecting drive shaft (6) and the first drive shaft (7). A second drive shaft (9) is provided inside the second connecting shell (4) through a bearing. A second universal joint (10) is provided between the second drive shaft (9) and the first drive shaft (7).

2. The multi-angle adjustment device for the steering gear of engineering machinery according to claim 1, characterized in that: The base (1) is provided with a first hinge fixing seat (11), and the bottom end of the first connecting shell (2) is provided with a first hinge connecting seat (12). The first hinge connecting seat (12) is rotatably hinged to the first hinge fixing seat (11), and the rotation axis of the first hinge connecting seat (12) and the second hinge connecting seat (14) matches the rotation axis of one end of the first universal joint (8).

3. The multi-angle adjustment device for the steering gear of engineering machinery according to claim 1, characterized in that: The first connecting shell (2) is provided with a second hinge fixing seat (13), and the second connecting shell (4) is provided with a second hinge connecting seat (14). The second hinge connecting seat (14) is rotatably hinged to the second hinge fixing seat (13), and the rotation axis of the second hinge connecting seat (14) and the second hinge fixing seat (13) matches the rotation axis of one end of the second universal joint (10).

4. The multi-angle adjustment device for the steering gear of engineering machinery according to claim 1, characterized in that: The top end of the second drive shaft (9) is provided with a lifting seat (15), and a lifting rod (16) is provided on the lifting seat (15) for lifting and lowering. A lifting adjustment structure is provided between the lifting rod (16) and the lifting seat (15).

5. The multi-angle adjustment device for the steering gear of engineering machinery according to claim 4, characterized in that: The lifting adjustment structure includes a lifting groove (17), which is opened downward from the top of the lifting seat (15). A lifting motor (18) is provided in the lifting groove (17), and a lifting screw (19) is provided at the output end of the lifting motor (18). The lifting rod (16) is slidably located in the lifting groove (17) and is connected to the lifting screw (19) in a transmission manner.

6. The multi-angle adjustment device for the steering gear of engineering machinery according to claim 4, characterized in that: The top end of the lifting rod (16) is provided with a mounting shaft (20), which is used to mount the steering wheel.

7. The multi-angle adjustment device for the steering gear of engineering machinery according to claim 1, characterized in that: A first telescopic protective cover (21) is provided between the base (1) and the first connecting shell (2).

8. The multi-angle adjustment device for the steering gear of engineering machinery according to claim 1, characterized in that: A second telescopic protective cover (22) is provided between the first connecting shell (2) and the second connecting shell (4).

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