Tractor steering wheel adjustment mechanism

Abstract

The utility model relates to tractor technical field, concretely is a kind of tractor steering wheel adjusting mechanism, including installation cylinder, rotatable connection in the steering wheel rotating shaft of installation cylinder, with the fixed adjusting seat of installation cylinder connection and the steering wheel adjusting fixed seat of hinge with adjusting seat, self-locking oil cylinder and adjusting handle, one end of the adjusting handle is set to with the side of the adjusting seat abut, when pulling adjusting handle, adjusting handle act on adjusting seat, make adjusting seat rotate relative to steering wheel adjusting fixed seat, and then drive the telescopic movement of one end of self-locking oil cylinder, to adjust the front and rear operation angle of steering wheel, since self-locking oil cylinder has automatic locking function, by pulling adjusting handle, the front and rear operation angle of steering wheel is continuously adjusted conveniently and quickly, and the arbitrary operation angle of steering wheel in the adjusting range can be locked.

Description

Technical Field

[0001] This utility model relates to the field of tractor technology, specifically to a tractor steering wheel adjustment mechanism. Background Technology

[0002] Currently, some large and medium-sized wheeled tractors produced domestically are equipped with steering wheel adjustment mechanisms to adjust the fore-and-aft angle of the tractor steering wheel, meeting the operating requirements of drivers of different sizes. However, the existing steering wheel adjustment mechanisms are not convenient or quick to operate, and they cannot continuously adjust the fore-and-aft angle of the steering wheel. For example, existing patent CN104129422B discloses a tractor steering wheel adjustment mechanism that adjusts the fore-and-aft angle of the steering wheel by engaging a positioning pin with multiple fan-shaped adjustment holes on a steering wheel adjustment mounting base. During the adjustment process, the pin needs to be pulled out from one adjustment hole on the steering wheel adjustment mounting base and then inserted into another adjustment hole, which is inconvenient, inefficient, and cannot continuously adjust the fore-and-aft angle of the steering wheel. Therefore, tractors need a steering wheel adjustment mechanism that can easily, quickly, and continuously adjust the fore-and-aft angle of the steering wheel to meet the driving requirements of the driver. Utility Model Content

[0003] The purpose of this invention is to provide a tractor steering wheel adjustment mechanism that can continuously adjust the front and rear angle of the tractor steering wheel, in order to overcome the problems existing in the prior art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a tractor steering wheel adjustment mechanism, comprising a mounting cylinder, a steering wheel rotating shaft rotatably connected to the mounting cylinder, an adjustment seat fixedly connected to the mounting cylinder, a steering wheel adjustment fixing seat hinged to the adjustment seat, a self-locking cylinder, and an adjustment handle. One end of the adjustment handle abuts against one side of the adjustment seat. The self-locking cylinder has a self-locking structure inside. When the adjustment handle is turned, the adjustment handle acts on the adjustment seat, causing the adjustment seat to rotate relative to the steering wheel adjustment fixing seat.

[0005] Based on the above technical solution, the present invention can be further improved as follows:

[0006] As a further improvement to the above technical solution, the top of the steering wheel adjustment fixing seat and the lower end of the adjustment seat are hinged together by a first hinge axis, and the adjustment seat can rotate around the first hinge axis; one side of the adjustment seat, one end of the adjustment handle and one end of the self-locking cylinder are hinged together by a second hinge axis.

[0007] As a further improvement to the above technical solution, the bottom of the steering wheel adjustment fixing seat is fixed to the tractor cab by screws, the upper end of the steering wheel rotation shaft is connected to the steering wheel, the steering wheel rotation shaft passes through and is rotatably connected to the mounting cylinder, the lower end of the mounting cylinder is fixed to the upper end of the adjustment seat by screws, and two or more bearings are installed in the mounting cylinder.

[0008] As a further improvement to the above technical solution, the top two sides of the steering wheel adjustment fixing seat extend upward to form two first protrusions. The two first protrusions and the lower end of the adjustment seat are all provided with first hinge holes. The lower end of the adjustment seat is sandwiched between the two first protrusions. The first hinge shaft passes through the first protrusions and the first hinge hole of the adjustment seat, so that the adjustment seat and the first protrusions of the steering wheel adjustment fixing seat are hinged through the first hinge shaft.

[0009] As a further improvement to the above technical solution, one side of the adjusting seat protrudes outward to form two second protrusions. One end of the self-locking cylinder is provided with a piston rod, which has a groove. One end of the adjusting handle is embedded in the groove of the piston rod. The second protrusions, the piston rod, and one end of the adjusting handle are all provided with second hinge holes. The piston rod and one end of the adjusting handle are sandwiched between the two second protrusions. The second hinge shaft passes through the second protrusions, the piston rod, and the second hinge hole of one end of the adjusting handle, so that the second protrusions of the adjusting seat, the self-locking cylinder, and the adjusting handle are hinged together by the second hinge shaft.

[0010] As a further improvement to the above technical solution, one side of the adjusting seat protrudes outward to form a first meshing tooth portion, which is located between the two second protrusions. One end of the adjusting handle is provided with a second meshing tooth portion that meshes with the first meshing tooth portion. One end of the adjusting handle and one side of the adjusting seat are engaged and abutted by the first and second meshing teeth portions.

[0011] As a further improvement to the above technical solution, the steering wheel adjustment fixing seat includes a fixing seat body and a mounting plate located at the bottom of the fixing seat body. The fixing seat body has an inner hollow structure, the first protrusion is formed on the top of the fixing seat body, and the other end of the self-locking cylinder away from the piston rod is placed inside the fixing seat body and connected to the mounting plate.

[0012] As a further improvement to the above technical solution, the fixing base body is made of iron plate or steel plate, and the first protrusion and the fixing base body are integrally formed by stamping iron plate or steel plate; the mounting plate is made of iron plate or steel plate and has multiple mounting holes, and the mounting plate is fixed to the bottom of the fixing base body by welding.

[0013] As a further improvement to the above technical solution, the first hinge shaft and the second hinge shaft are screws, and a nut is screwed to one end of the screw.

[0014] The beneficial effects of this utility model are as follows: The tractor steering wheel adjustment mechanism provided by this utility model includes a mounting cylinder, a steering wheel rotating shaft rotatably connected to the mounting cylinder, an adjustment seat fixedly connected to the mounting cylinder, a steering wheel adjustment fixing seat hinged to the adjustment seat, a self-locking cylinder, and an adjustment handle. One end of the adjustment handle is configured to abut against one side of the adjustment seat. When the adjustment handle is turned, the adjustment handle acts on the adjustment seat, causing the adjustment seat to rotate relative to the steering wheel adjustment fixing seat, thereby driving one end of the self-locking cylinder to extend and retract, thus adjusting the front and rear operating angle of the steering wheel. Furthermore, since the self-locking cylinder has an automatic locking function, by turning the adjustment handle, the front and rear operating angle of the steering wheel can be conveniently and quickly adjusted continuously, and any operating angle of the steering wheel within the adjustment range can be locked. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the structure of the tractor steering wheel adjustment mechanism provided in a preferred embodiment of the present invention;

[0017] Figure 2 yes Figure 1 A schematic diagram showing the interaction between the adjusting seat and the adjusting handle;

[0018] In the diagram: 1. Mounting cylinder; 2. Steering wheel rotation shaft; 21. Steering wheel; 3. Adjusting seat; 31. Second protrusion; 32. First meshing tooth; 4. Steering wheel adjusting fixing seat; 40. Fixing seat body; 41. First protrusion; 42. Mounting plate; 5. Self-locking cylinder; 51. Piston rod; 6. Adjusting handle; 61. Second meshing tooth; 71. First hinge shaft; 711. First hinge hole; 72. Second hinge shaft; 721. Second hinge hole. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0020] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] like Figure 1 , Figure 2 As shown, a preferred embodiment of the present invention provides a tractor steering wheel adjustment mechanism, including a mounting cylinder 1, a steering wheel rotating shaft 2 rotatably connected to the mounting cylinder 1, an adjustment seat 3 fixedly connected to the mounting cylinder 1, a steering wheel adjustment fixing seat 4 hinged to the adjustment seat 3, a self-locking cylinder 5, and an adjustment handle 6.

[0023] The upper end of the steering wheel rotation shaft 2 is connected to the steering wheel 21. The steering wheel rotation shaft 2 passes through and is rotatably connected to the mounting cylinder 1. The lower end of the mounting cylinder 1 is fixed to the upper end of the adjusting seat 3 by screws. Two or more bearings are installed inside the mounting cylinder 1 to support the steering wheel rotation shaft 2, allowing the steering wheel rotation shaft 2 to rotate smoothly relative to the mounting cylinder 1 and ensuring smooth operation of the steering wheel 21. A hydraulic steering gear is provided inside the adjusting seat 3. The lower end of the steering wheel rotation shaft 2 is inserted into the hydraulic steering gear, enabling the steering wheel 21 to drive the steering wheel rotation shaft 2 and the hydraulic steering gear to rotate. By opening or closing the hydraulic steering gear, hydraulic steering is achieved, allowing the driver to achieve greater steering force control with less operating force. The performance is safe, reliable, and easy and flexible to operate.

[0024] The bottom of the steering wheel adjustment mounting base 4 is fixed to the tractor cab with screws. The top of the steering wheel adjustment mounting base 4 and the lower end of the adjustment seat 3 are hinged together by a first hinge shaft 71, allowing the adjustment seat 3 to rotate around the first hinge shaft 71. When the adjustment seat 3 rotates around the first hinge shaft 71, the forward and backward operating angle of the steering wheel 21 can be adjusted within a large range. One side of the adjustment seat 3, one end of the adjustment handle 6, and one end of the self-locking cylinder 5 are hinged together by a second hinge shaft 72. The self-locking cylinder 5 has a self-locking structure inside, giving it an automatic locking function. The self-locking cylinder 5 can be a cylinder with a self-locking structure from the prior art, such as the cylinder described in the prior art patent CN218717900U.

[0025] In use, by turning the adjusting handle 6, the adjusting seat 3 rotates relative to the steering wheel adjusting fixing seat 4, which in turn drives one end of the self-locking cylinder 5 to extend and retract, thereby adjusting the front and rear operating angle of the steering wheel 21. Since the self-locking cylinder 5 has an automatic locking function, by turning the adjusting handle 6, the front and rear angle of the steering wheel 21 can be conveniently and quickly adjusted continuously, and the steering wheel 21 can be locked at any angle within the adjustment range.

[0026] Specifically, the top two sides of the steering wheel adjustment fixing seat 4 extend upward to form two first protrusions 41. The two first protrusions 41 and the lower end of the adjustment seat 3 are all provided with first hinge holes 711. The lower end of the adjustment seat 3 is sandwiched between the two first protrusions 41. The first hinge shaft 71 passes through the first protrusions 41 and the first hinge hole 711 of the adjustment seat 3, so that the adjustment seat 3 and the first protrusions 41 of the steering wheel adjustment fixing seat 4 are hinged through the first hinge shaft 71. The first hinge shaft 71 can be a screw, and a nut is screwed to one end of the screw.

[0027] Specifically, one side of the adjusting seat 3 protrudes outward to form two second protrusions 31. One end of the self-locking cylinder 5 is provided with a piston rod 51, which has a groove. One end of the adjusting handle 6 is embedded in the groove of the piston rod 51. The second protrusions 31, the piston rod 51, and one end of the adjusting handle 6 are all provided with second hinge holes 721. The piston rod 51 and one end of the adjusting handle 6 are sandwiched between the two second protrusions 31. The second hinge shaft 72 passes through the second protrusions 31, the piston rod 51, and the second hinge hole 721 of one end of the adjusting handle 6, so that the second protrusions 31 of the adjusting seat 3, the self-locking cylinder 5, and the adjusting handle 6 are hinged together by the second hinge shaft 72. The second hinge shaft 72 can be a screw, and one end of the screw is screwed with a nut.

[0028] Specifically, the steering wheel adjustment fixing seat 4 includes a fixing seat body 40 and a mounting plate 42 disposed at the bottom of the fixing seat body 40. The fixing seat body 40 has a hollow inner structure. The first protrusion 41 is formed on the top of the fixing seat body 40. The other end of the self-locking cylinder 5 away from the piston rod 51 is placed inside the fixing seat body 40 and connected to the mounting plate 42. In this embodiment, the fixing seat body 40 is made of iron plate or steel plate. The first protrusion 41 and the fixing seat body 40 are integrally formed by stamping iron plate or steel plate. The mounting plate 42 is made of iron plate or steel plate and has multiple mounting holes. The mounting plate 42 is fixed to the bottom of the fixing seat body 40 by welding.

[0029] Furthermore, one end of the adjusting handle 6 abuts against one side of the adjusting seat 3. When the adjusting handle 6 is turned, the adjusting handle 6 acts on the adjusting seat 3, causing the adjusting seat 3 to rotate relative to the steering wheel adjusting fixing seat 4. Since the piston rod 51 of the self-locking cylinder 5 is connected to the adjusting seat 3 through the second hinge shaft 72, when the adjusting seat 3 rotates, it drives the piston rod 51 of the self-locking cylinder 5 to extend and retract, thereby adjusting the front and rear operating angle of the steering wheel 21.

[0030] More preferably, one side of the adjusting seat 3 protrudes outward to form a first engaging tooth 32, which is located between the two second protrusions 31. One end of the adjusting handle 6 is provided with a second engaging tooth 61 that engages with the first engaging tooth 32. One end of the adjusting handle 6 and one side of the adjusting seat 3 are engaged and abutted by the first engaging tooth 32 and the second engaging tooth 61. When the adjusting handle 6 is turned around the second hinge axis 72, the second engaging tooth 61 on the adjusting handle 6 acts on the first engaging tooth 32 on the adjusting seat 3, causing the adjusting seat 3 to rotate relative to the steering wheel adjusting fixing seat 4.

[0031] The tractor steering wheel adjustment mechanism provided by this utility model comprises an installation cylinder 1, a steering wheel rotating shaft 2 rotatably connected to the installation cylinder 1, an adjustment seat 3 fixedly connected to the installation cylinder 1, a steering wheel adjustment fixing seat 4 hinged to the adjustment seat 3, a self-locking cylinder 5, and an adjustment handle 6. One end of the adjustment handle 6 is configured to abut against one side of the adjustment seat 3. When the adjustment handle 6 is turned, the adjustment handle 6 acts on the adjustment seat 3, causing the adjustment seat 3 to rotate relative to the steering wheel adjustment fixing seat 4, thereby driving one end of the self-locking cylinder 5 to extend and retract, thereby adjusting the front and rear operating angle of the steering wheel 21. Furthermore, since the self-locking cylinder 5 has an automatic locking function, by turning the adjustment handle 6, the front and rear operating angle of the steering wheel 21 can be conveniently and quickly adjusted continuously, and any operating angle of the steering wheel 21 within the adjustment range can be locked.

[0032] Any descriptions not covered in the above specific embodiments of this utility model belong to the well-known technology in the field, and can be implemented by referring to the well-known technology.

[0033] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A tractor steering wheel adjustment mechanism, characterized in that: The device includes a mounting cylinder, a steering wheel rotating shaft rotatably connected to the mounting cylinder, an adjusting seat fixedly connected to the mounting cylinder, a steering wheel adjusting fixing seat hinged to the adjusting seat, a self-locking cylinder, and an adjusting handle. One end of the adjusting handle abuts against one side of the adjusting seat. The self-locking cylinder has a self-locking structure inside. When the adjusting handle is turned, the adjusting handle acts on the adjusting seat, causing the adjusting seat to rotate relative to the steering wheel adjusting fixing seat.

2. The tractor steering wheel adjustment mechanism according to claim 1, characterized in that: The top of the steering wheel adjustment fixing seat and the lower end of the adjustment seat are hinged together by a first hinge axis, and the adjustment seat can rotate around the first hinge axis; one side of the adjustment seat, one end of the adjustment handle and one end of the self-locking cylinder are hinged together by a second hinge axis.

3. The tractor steering wheel adjustment mechanism according to claim 2, characterized in that: The bottom of the steering wheel adjustment mounting base is fixed to the tractor cab by screws. The upper end of the steering wheel rotation shaft is connected to the steering wheel. The steering wheel rotation shaft passes through and is rotatably connected to the mounting cylinder. The lower end of the mounting cylinder is fixed to the upper end of the adjustment base by screws. Two or more bearings are installed inside the mounting cylinder.

4. The tractor steering wheel adjustment mechanism according to claim 3, characterized in that: The top two sides of the steering wheel adjustment fixing seat extend upward to form two first protrusions. The two first protrusions and the lower end of the adjustment seat are all provided with first hinge holes. The lower end of the adjustment seat is sandwiched between the two first protrusions. The first hinge shaft passes through the first protrusions and the first hinge hole of the adjustment seat, so that the adjustment seat and the first protrusions of the steering wheel adjustment fixing seat are hinged through the first hinge shaft.

5. The tractor steering wheel adjustment mechanism according to claim 4, characterized in that: One side of the adjusting seat protrudes outward to form two second protrusions. One end of the self-locking cylinder is provided with a piston rod, which has a groove. One end of the adjusting handle is embedded in the groove of the piston rod. The second protrusions, the piston rod, and one end of the adjusting handle are all provided with second hinge holes. The piston rod and one end of the adjusting handle are sandwiched between the two second protrusions. The second hinge shaft passes through the second protrusions, the piston rod, and the second hinge hole of one end of the adjusting handle, so that the second protrusions of the adjusting seat, the self-locking cylinder, and the adjusting handle are hinged together by the second hinge shaft.

6. The tractor steering wheel adjustment mechanism according to claim 5, characterized in that: The adjusting seat has a first meshing tooth portion protruding outward on one side, which is located between the two second protrusions. One end of the adjusting handle is provided with a second meshing tooth portion that meshes with the first meshing tooth portion. One end of the adjusting handle and one side of the adjusting seat are engaged and abutted by the first and second meshing teeth portions.

7. The tractor steering wheel adjustment mechanism according to claim 5, characterized in that: The steering wheel adjustment mounting bracket includes a mounting bracket body and a mounting plate located at the bottom of the mounting bracket body. The mounting bracket body has an inner hollow structure. The first protrusion is formed on the top of the mounting bracket body. The other end of the self-locking cylinder away from the piston rod is located inside the mounting bracket body and connected to the mounting plate.

8. The tractor steering wheel adjustment mechanism according to claim 7, characterized in that: The fixing base body is made of iron plate or steel plate, and the first protrusion and the fixing base body are integrally formed by stamping iron plate or steel plate; the mounting plate is made of iron plate or steel plate and has multiple mounting holes, and the mounting plate is fixed to the bottom of the fixing base body by welding.

9. The tractor steering wheel adjustment mechanism according to claim 2, characterized in that: The first and second hinge shafts are screws, with a nut screwed to one end of each screw.

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