Steering mechanism and four-wheel riding type miniature tillage equipment

Abstract

The utility model relates to the technical field of agricultural machinery, and discloses a steering mechanism which is applied to four-wheel riding type miniature tillage equipment and comprises a steering assembly used for controlling the steering of the four-wheel riding type miniature tillage equipment, and the steering assembly comprises a first steering piece and a second steering piece meshed with the first steering piece. When the first steering part rotates in the horizontal plane circumferential direction, the first steering part drives the second steering part to rotate in the vertical plane circumferential direction, the second steering part drives the four-wheel riding type miniature tillage equipment to steer, the first steering part is a worm shaft, the second steering part is a worm wheel shaft, and spiral teeth on the worm shaft are meshed with a worm wheel on the worm wheel shaft. And the worm-wheel shaft rotates circumferentially in the vertical plane and drives the four-wheel riding type miniature tillage equipment to steer. The steering control system can be used for controlling the steering of the four-wheel riding type miniature tillage equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a steering mechanism and a four-wheel riding miniature farming equipment. Background Art

[0002] The four-wheeled riding micro-tillage equipment is a small tillage machine mainly used for agricultural operations, including two front wheels and two rear wheels. The two front wheels or the two rear wheels can be removed and replaced with tillage tools. The operator sits on the four-wheeled riding micro-tillage equipment to cultivate the fields. In order to facilitate the operator to control the steering of the four-wheeled riding micro-tillage equipment, a steering mechanism suitable for the four-wheeled riding micro-tillage equipment is urgently needed. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, one of the purposes of the present invention is to provide a steering mechanism that can be used to control the steering of a four-wheel ride-on miniature farming equipment.

[0004] The technical solution adopted by the present invention is as follows: a steering mechanism, applied to four-wheel riding micro-tillage equipment, including a steering assembly for controlling the steering of the four-wheel riding micro-tillage equipment, the steering assembly including a first steering member and a fan-shaped second steering member engaged with the first steering member, when the first steering member rotates circumferentially in the horizontal plane, the first steering member drives the second steering member to rotate circumferentially in the vertical plane, and the second steering member drives the four-wheel riding micro-tillage equipment to steer.

[0005] Compared with the prior art, the beneficial effects of the present invention are:

[0006] The steering assembly of the utility model can be used to control the steering of a four-wheel riding micro-tillage device. The cooperation of the first steering member and the fan-shaped second steering member can stably transmit power, reduce costs, and save installation space.

[0007] As a preferred embodiment of the present invention, the first steering member is a worm shaft, the second steering member is a worm gear shaft, the spiral teeth on the worm shaft are engaged with the worm gear on the worm gear shaft, the worm gear provided on the worm gear shaft is a fan-shaped worm gear, and the worm shaft is connected to the steering wheel on the four-wheel riding micro-tillage equipment. When the steering wheel rotates circumferentially in the horizontal plane, the worm shaft rotates circumferentially in the horizontal plane, and the worm gear shaft rotates circumferentially in the vertical plane, and the worm gear shaft drives the four-wheel riding micro-tillage equipment to steer.

[0008] In this scheme, the operator operates the steering wheel to rotate horizontally, the steering wheel drives the worm shaft to rotate horizontally, the worm on the worm shaft engages with the worm wheel on the worm wheel shaft, the worm shaft drives the worm wheel shaft to rotate vertically, and the worm wheel shaft drives the four-wheel riding micro-tillage equipment to steer.

[0009] Beneficial effect: The operator can indirectly control the steering of the four-wheel riding micro-tillage equipment through the worm shaft and the worm gear shaft. Since the four-wheel riding micro-tillage equipment only uses one-fourth of the worm gear when steering, the worm gear in this solution is designed as a fan-shaped worm gear. While meeting the power transmission requirements, compared with using a complete worm gear, it can also make the overall structure of the steering assembly compact and reduce costs.

[0010] As a preferred embodiment of the present invention, one end of the worm shaft is fixedly connected to the steering wheel of the four-wheel riding micro-tillage equipment, and the other end is rotatably connected to the body of the four-wheel riding micro-tillage equipment. Both ends of the worm shaft are rotatably connected to the body of the four-wheel riding micro-tillage equipment, and one end of the worm shaft is connected to the universal ball head pull rod on the four-wheel riding micro-tillage equipment.

[0011] Beneficial effect: The steering wheel, the worm shaft and the worm gear shaft cooperate to facilitate an operator to control the steering of the four-wheel riding micro-tillage equipment by operating the steering wheel.

[0012] As a preferred embodiment of the present invention, the steering assembly also includes a box for accommodating a worm shaft and a worm wheel shaft, the worm shaft is provided with a first bearing, the worm wheel shaft is provided with a second bearing, one end of the worm shaft located in the box and the end of the worm wheel shaft away from the box are respectively mounted on the box through the first bearing and the second bearing, and the end of the worm wheel shaft located in the box is rotatably connected to the box.

[0013] Beneficial effects: The box body can provide independent space for the worm shaft and the worm wheel shaft, ensuring smooth engagement of the worm shaft and the worm wheel shaft, and also facilitates the connection of the worm shaft, the worm wheel shaft and the body of the four-wheel riding miniature tillage equipment.

[0014] As a preferred embodiment of the present utility model, one end of the worm gear shaft located in the box body is connected to an adjusting screw, the adjusting screw is provided with a third bearing located in the worm gear shaft, the adjusting screw is connected to the worm gear shaft through the third bearing, the adjusting screw and the worm gear shaft are coaxial, one end of the adjusting screw is provided with a limiting ball abutting the third bearing, the worm gear shaft is provided with a retaining ring abutting the third bearing, one end of the adjusting screw extends out of the box body and is connected to a nut, and one end face of the nut abuts against the outer surface of the box body.

[0015] In this solution, the nut is connected to the adjusting screw, and the nut is rotated so that the nut approaches the worm wheel along the axial direction of the worm wheel shaft. Since one end face of the nut abuts against the outer surface of the box, when the nut is rotated, the adjusting screw moves axially along the worm wheel shaft. Since the third bearing abuts against the retaining ring, the worm wheel shaft is limited by the retaining ring through the third bearing. Therefore, when the adjusting screw moves axially along the worm wheel shaft, the adjusting screw drives the worm wheel shaft to move slightly along the axial direction of the worm wheel shaft, so that the worm wheel on the worm wheel shaft is completely engaged with the worm on the worm shaft.

[0016] Beneficial effects: The limiting ball and the retaining ring can limit the third bearing, thereby limiting the adjusting screw, so that when the adjusting screw moves axially along the worm gear shaft, it can drive the worm shaft to move axially, thereby improving the accuracy of the engagement between the worm gear shaft and the worm shaft, ensuring effective power transmission, and ensuring effective steering.

[0017] As a preferred embodiment of the present invention, a support sleeve is provided on the worm shaft, the support sleeve is clearance-matched with the worm shaft, the support sleeve is connected to a support tube coaxial with the worm shaft, and the support tube is connected to the box body.

[0018] Beneficial effect: The support sleeve and the support tube cooperate to provide support for the worm shaft, ensuring that the worm shaft rotates smoothly in the horizontal circumferential direction.

[0019] As a preferred embodiment of the present invention, the support tube is connected to a flange, the flange is connected to the box body, and an annular paper gasket is provided between the flange and the box body.

[0020] Beneficial effect: The connection between the flange and the box body can ensure a stable connection between the support pipe and the box body.

[0021] As a preferred embodiment of the present invention, the steering assembly also includes a connecting plate connected to the box body, and multiple groups of connecting parts are symmetrically provided on the connecting plate, each group of connecting parts includes two symmetrically arranged connecting holes, and the connecting holes are connected to the connecting support frame on the four-wheel riding micro-tillage equipment.

[0022] Beneficial effect: The connection plate and the connection piece cooperate to allow the box to be installed on four-wheel riding micro-tillage equipment of different models through the connection plate.

[0023] A second object of the present invention is to provide a four-wheeled riding micro-tillage device comprising the steering mechanism described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural diagram of the steering mechanism of the utility model;

[0025] Figure 2 This is a schematic diagram of the partial structure of the steering mechanism of the utility model;

[0026] Figure 3 This is a partial structural diagram of the steering mechanism of the utility model from another angle;

[0027] Figure 4 It is a partial structural diagram of the steering mechanism of the utility model from another angle. DETAILED DESCRIPTION

[0028] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various variations in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes and are not intended to limit the present invention.

[0029] In the description of this application, the terms "first", "second", "one side", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this application.

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] The reference numerals include: worm shaft 1, worm wheel shaft 2, steering wheel 3, box body 4, first bearing 5, second bearing 6, adjusting screw 7, third bearing 8, limiting ball 9, retaining ring 10, support sleeve 11, support tube 12, flange 13, connecting plate 14, connecting hole 15, nut 16.

[0032] like Figure 1-4 As shown, the steering mechanism is applied to four-wheel riding micro-tillage equipment, including a steering component for controlling the steering of the four-wheel riding micro-tillage equipment.

[0033] like Figure 1 As shown, the steering assembly includes a first steering member, a second steering member meshing with the first steering member, a box body 4 for accommodating the worm shaft 1 and the worm wheel shaft 2, and a connecting plate 14 connected to the box body 4. In this embodiment, the first steering member and the second steering member can also be a pair of meshing bevel gears.

[0034] In this embodiment, the first steering member is a worm shaft 1, one end of which is fixedly connected to a steering wheel 3 of a four-wheel ride-on micro-tillage device. Figure 2 As shown, a first bearing 5 is provided on the other end and is mounted on the box body 4 through the first bearing 5, as shown Figure 4 As shown, a support sleeve 11 is sleeved on the worm shaft 1, and the support sleeve 11 is loosely fitted with the worm shaft 1. The support sleeve 11 is connected to a support tube 12 which is coaxial with the worm shaft 1. A flange 13 is connected to the support tube 12, and the flange 13 is connected to the box body 4. An annular paper pad is provided between the flange 13 and the box body 4.

[0035] In this embodiment, the support sleeve 11 is a wear-resistant sleeve, which can be a plastic product. The support sleeve 11 includes a ring and a hollow cylinder. The ring is connected to the first hollow cylinder. The first hollow cylinder extends into the support tube 12 and is clamped with the support tube 12. The upper end of the support tube 12 abuts against the ring, and the lower end of the support tube 12 is fixedly connected to the flange 13.

[0036] like Figure 2 、 3 As shown, the second steering member is a worm gear shaft 2, one end of the worm gear shaft 2 is provided with a second bearing 6, and the other end is rotatably connected to the box body 4, and the interior is hollow. The worm gear shaft 2 is connected to the box body 4 through the second bearing 6, and the end of the worm gear shaft 2 close to the second bearing 6 is connected to the pull rod on the four-wheel riding micro-tillage equipment. A fan-shaped worm gear is provided on the worm gear shaft 2, and the fan-shaped worm gear on the worm gear shaft 2 is engaged with the spiral teeth on the worm shaft 1, and the fan-shaped worm gear on the worm gear shaft 2 and the spiral teeth on the worm shaft 1 are both located in the box body 4.

[0037] One end of the worm shaft 2 away from the second bearing 6 is connected to a retaining ring 10 and an adjusting screw 7. The adjusting screw 7 is provided with a third bearing 8 located in the worm shaft 2. The adjusting screw 7 is connected to the worm shaft 2 through the third bearing 8. The adjusting screw 7 and the worm shaft 2 are coaxial. One end of the adjusting screw 7 is provided with a limiting ball 9 abutting the third bearing 8. The retaining ring 10 abuts the third bearing 8. One end of the adjusting screw 7 extends out of the box body 4 and is connected to a nut 16. One end face of the nut 16 abuts the outer surface of the box body 4.

[0038] In this embodiment, a second hollow cylinder is provided in the box body 4, one end of the worm shaft 2 connected to the adjusting screw 7 extends into the second hollow cylinder, and the retaining ring 10 is a hole retaining ring.

[0039] Connecting pieces are symmetrically arranged on the connecting plate 14 , and each set of connecting pieces includes two symmetrically arranged connecting holes 15 , which are connected to the connecting support frame on the four-wheel ride-on miniature tillage equipment.

[0040] In this embodiment, when the steering wheel 3 rotates horizontally, the worm shaft 1 rotates horizontally, the worm gear shaft 2 rotates vertically, and the worm gear shaft 2 drives the pull rod on the four-wheel ride-on micro-tillage equipment to swing.

[0041] Description of power transmission in this embodiment:

[0042] The operator controls the steering wheel 3 to rotate in the horizontal plane. Since the steering wheel 3 is fixedly connected to the worm shaft 1, the steering wheel 3 drives the worm shaft 1 to rotate in the horizontal plane. The spiral teeth on the worm shaft 1 engage with the worm wheel on the worm gear shaft 2, driving the worm gear shaft 2 to rotate in the vertical plane. The end of the worm gear shaft 2 located outside the box 4 is connected to a driving arm, and the driving arm is connected to the pull rod. The end of the pull rod away from the driving arm is provided with a gear. The front wheels on the four-wheel riding micro-tillage equipment are all connected to a steering arm, and a rack is provided between the two steering arms. A transverse tie rod is provided between each end of the rack and the corresponding steering arm. The worm gear shaft 2 drives the gear to engage with the rack through the driving arm and the pull rod, so that the steering arm rotates in the horizontal plane, thereby driving the wheel to turn (the driving arm, pull rod, steering arm, and transverse tie rod are conventional steering components and will not be repeated).

[0043] A four-wheeled riding micro-tillage device comprising the above-mentioned steering mechanism.

[0044] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A steering mechanism, characterized in that: The invention is applied to four-wheel riding micro-tillage equipment, comprising a steering assembly for controlling the steering of the four-wheel riding micro-tillage equipment, wherein the steering assembly comprises a first steering member and a second steering member engaged with the first steering member. When the first steering member rotates circumferentially in the horizontal plane, the first steering member drives the second steering member to rotate circumferentially in the vertical plane, and the second steering member drives the four-wheel riding micro-tillage equipment to steer.

2. The steering mechanism according to claim 1, characterized in that: The first steering member is a worm shaft, and the second steering member is a worm gear shaft. The spiral teeth on the worm shaft are engaged with the worm gear on the worm gear shaft. The worm gear provided on the worm gear shaft is a fan-shaped worm gear. The worm shaft is connected to the steering wheel on the four-wheel riding micro-tillage equipment. When the steering wheel rotates circumferentially in the horizontal plane, the worm shaft rotates circumferentially in the horizontal plane, and the worm gear shaft rotates circumferentially in the vertical plane. The worm gear shaft drives the four-wheel riding micro-tillage equipment to steer.

3. The steering mechanism according to claim 2, characterized in that: One end of the worm shaft is fixedly connected to the steering wheel of the four-wheel riding micro-tillage equipment, and the other end is rotatably connected to the body of the four-wheel riding micro-tillage equipment. Both ends of the worm gear shaft are rotatably connected to the body of the four-wheel riding micro-tillage equipment, and one end of the worm gear shaft is connected to the universal ball head pull rod on the four-wheel riding micro-tillage equipment.

4. The steering mechanism according to claim 2, characterized in that: The steering assembly also includes a box for accommodating a worm shaft and a worm wheel shaft. The worm shaft is provided with a first bearing, and the worm wheel shaft is provided with a second bearing. One end of the worm shaft located in the box and the end of the worm wheel shaft away from the box are respectively mounted on the box through the first bearing and the second bearing. The end of the worm wheel shaft located in the box is rotatably connected to the box.

5. The steering mechanism according to claim 4, characterized in that: One end of the worm gear shaft located in the box body is connected to an adjusting screw, and the adjusting screw is provided with a third bearing located in the worm gear shaft. The adjusting screw is connected to the worm gear shaft through the third bearing. The adjusting screw and the worm gear shaft are coaxial. One end of the adjusting screw is provided with a limiting ball abutting the third bearing, and the worm gear shaft is provided with a retaining ring abutting the third bearing. One end of the adjusting screw extends out of the box body and is connected to a nut, and one end face of the nut abuts against the outer surface of the box body.

6. The steering mechanism according to claim 4, characterized in that: A support sleeve is sleeved on the worm shaft, and the support sleeve is clearance-matched with the worm shaft. The support sleeve is connected to a support tube coaxial with the worm shaft, and the support tube is connected to the box body.

7. The steering mechanism according to claim 6, characterized in that: The support tube is connected with a flange, the flange is connected with the box body, and an annular paper pad is provided between the flange and the box body.

8. The steering mechanism according to claim 4, characterized in that: The steering assembly also includes a connecting plate connected to the box body, and connecting pieces are symmetrically arranged on the connecting plate. Each group of connecting pieces includes two symmetrically arranged connecting holes, and the connecting holes are connected to the connecting support frame on the four-wheel riding micro-tillage equipment.

9. Four-wheeled riding miniature tillage equipment, characterized by: It comprises the steering mechanism described in any one of claims 1-8.

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