Tracked rotary tiller steering wheel floating shock absorption structure

Abstract

This utility model discloses a floating shock-absorbing structure for the steering wheel of a tracked rotary tiller, including a frame, a steering wheel, a steering shaft, a steering riser, and a steering drive gear. The frame has a support plate, and the lower end of the steering riser is fixedly connected to the support plate. The upper end of the steering shaft is connected to the steering wheel, and the lower end passes through the steering riser and is connected to a universal coupling. A guide sleeve is vertically arranged below the steering riser, and a gear shaft is slidably fitted inside the guide sleeve. A shock-absorbing spring is provided between the universal coupling and the guide sleeve, and the shock-absorbing spring is sleeved on the gear shaft, with its two ends abutting against the universal coupling and the guide sleeve, respectively. This utility model can reduce the impact of the steering wheel on the driver during driving, making the driving experience better and more comfortable, and effectively improving driving safety.

Description

Technical Field

[0001] This utility model relates to the structure of a tracked rotary tiller, and more particularly to a floating shock absorption structure for the steering wheel of a tracked rotary tiller. Background Technology

[0002] With societal development, agricultural operations are increasingly being mechanized, especially in large-scale farming where mechanization is highly prevalent. In plains areas, agricultural machinery is becoming increasingly common, such as tracked rotary tillers. To enhance ease of operation, most rotary tillers are equipped with steering assemblies to control their steering.

[0003] However, current steering assemblies mainly consist of a steering wheel, steering shaft, steering riser, and steering drive gear. The steering riser is generally fixedly connected to the frame, the upper end of the steering shaft is connected to the steering wheel, and the lower end passes through the steering shaft tube and connects to the steering drive gear. As a result, during the operation of the rotary tiller, vibrations often occur due to uneven road surfaces. These vibrations are transmitted to the steering wheel through the steering shaft and directly impact the driver's hands, significantly affecting driving and potentially causing the driver to lose control. Furthermore, prolonged driving can easily lead to fatigue and a poor driving experience. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the purpose of this utility model is to solve the problems of steering wheel vibration affecting driving experience, fatigue and low safety during the operation of tracked rotary tillers. It provides a floating shock absorption structure for the steering wheel of tracked rotary tillers, which can reduce the impact of the steering wheel on the driver during driving, making the driving experience better and more comfortable, and effectively improving driving safety.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a floating shock-absorbing structure for a tracked rotary tiller steering wheel, including a frame, a steering wheel, a steering shaft, a steering riser, and a steering drive gear; the frame has a support plate, the lower end of the steering riser is fixedly connected to the support plate, the upper end of the steering shaft is connected to the steering wheel, and the lower end passes through the steering riser and is connected to a universal coupling; the characteristic is that: a guide sleeve is vertically provided below the steering riser, and the guide sleeve is fixedly connected to the frame; a gear shaft is slidably fitted inside the guide sleeve, the lower end of the gear shaft is connected to the steering drive gear, and the upper end is connected to the universal coupling; a shock-absorbing spring is provided between the universal coupling and the guide sleeve, the shock-absorbing spring is sleeved on the gear shaft, and its two ends abut against the universal coupling and the guide sleeve respectively, and under the action of the shock-absorbing spring, there is a gap between the upper end of the steering shaft and the upper end of the steering riser.

[0006] Furthermore, a support bearing is provided between the steering shaft and the steering riser. The support bearing is located at the upper end of the steering riser and is fixedly connected to the steering riser.

[0007] Furthermore, the upper diameter of the steering shaft is smaller than the diameter of the middle part of the steering shaft, so that the upper part of the steering shaft forms a stepped structure; the upper end of the steering shaft passes through the support bearing and is clearance-fitted with the support bearing; a limiting retaining ring is also provided at the upper end of the steering shaft, the support bearing is located between the stepped structure and the limiting retaining ring, and the distance between the stepped structure and the limiting retaining ring is greater than the axial thickness of the support bearing.

[0008] Furthermore, a wear-resistant washer is provided between the shock-absorbing spring and the guide sleeve.

[0009] Furthermore, the universal coupling is a cross-pin universal coupling.

[0010] Furthermore, the support plate has a through hole for a steering shaft or universal coupling to pass through.

[0011] Furthermore, the lower end of the steering riser is formed with a connecting flange, which is fixedly connected to the support plate by bolts.

[0012] Compared with the prior art, this utility model has the following advantages: it has a simple structure and absorbs the vibration transmitted by the frame or wheels through the shock-absorbing spring, so that the steering wheel has a certain vertical floating ability, thereby reducing the impact of the steering wheel on the driver's hands, making the driver's driving experience better and more comfortable, and effectively improving driving safety. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the structural principle of this utility model.

[0015] In the diagram: 1—frame, 2—steering wheel, 3—steering shaft, 4—steering riser, 5—steering drive gear, 6—support plate, 7—universal coupling, 8—guide sleeve, 9—shock absorber spring, 10—support bearing, 11—limiting retaining ring. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0018] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the invention 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 invention based on the specific circumstances.

[0019] Example: See Figure 1 , Figure 2A floating shock-absorbing structure for the steering wheel of a tracked rotary tiller includes a frame 1, a steering wheel 2, a steering shaft 3, a steering riser 4, and a steering drive gear 5. The frame 1 has a support plate 6, and the lower end of the steering riser 4 is fixedly connected to the support plate 6. In implementation, the lower end of the steering riser 4 has a connecting flange, which is fixedly connected to the support plate 6 by bolts. The upper end of the steering shaft 3 is connected to the steering wheel 2, and the lower end passes through the steering riser 4 and is connected to a universal coupling 7. The support plate 6 has a through hole for the steering shaft 3 or the universal coupling 7 to pass through. The universal coupling 7 is a cross-pin universal coupling 7, which has a simple structure and good stability.

[0020] A guide sleeve 8 is vertically installed below the steering riser 4, and is fixedly connected to the frame 1. A gear shaft is slidably fitted inside the guide sleeve 8. The lower end of the gear shaft is connected to the steering drive gear 5, and the upper end is connected to the universal coupling 7. In practice, a support bearing 10 is also provided between the steering shaft 3 and the steering riser 4. The support bearing 10 is located at the upper end of the steering riser 4 and is fixedly connected to the steering riser 4 to ensure the stability of the steering shaft 3. The upper diameter of the steering shaft 3 is smaller than the diameter of the middle part of the steering shaft 3, forming a stepped structure at the upper part of the steering shaft 3. The upper end of the steering shaft 3 passes through the support bearing 10 and is clearance-fitted with the support bearing 10. A retaining ring 11 is also provided at the upper end of the steering shaft 3. The support bearing 10 is located between the stepped structure and the retaining ring 11, and the distance between the stepped structure and the retaining ring 11 is greater than the axial thickness of the support bearing 10.

[0021] A damping spring 9 is provided between the universal coupling 7 and the guide sleeve 8. The damping spring 9 is sleeved on the gear shaft, and its two ends abut against the universal coupling 7 and the guide sleeve 8 respectively. Under the action of the damping spring 9, there is a gap between the upper end of the steering shaft 3 and the upper end of the steering riser 4. A wear-resistant washer is also provided between the damping spring 9 and the guide sleeve 8 to improve the stability of the overall structure.

[0022] The shock-absorbing spring 9 absorbs the vibration transmitted by the frame 1 or the wheels, giving the steering wheel 2 a certain degree of vertical floating ability. This reduces the impact of the steering wheel 2 on the driver's hands, making the driver's driving experience better and more comfortable, and effectively improving driving safety.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. A floating shock absorption structure for a tracked rotary tiller steering wheel, comprising a frame, a steering wheel, a steering shaft, a steering riser, and a steering drive gear; the frame has a support plate, the lower end of the steering riser is fixedly connected to the support plate, the upper end of the steering shaft is connected to the steering wheel, and the lower end passes through the steering riser and is connected to a universal coupling; characterized in that: A guide sleeve is vertically installed below the steering riser, and the guide sleeve is fixedly connected to the vehicle frame. A gear shaft is slidably fitted inside the guide sleeve. The lower end of the gear shaft is connected to the steering drive gear, and the upper end is connected to the universal coupling. A shock-absorbing spring is installed between the universal coupling and the guide sleeve. The shock-absorbing spring is sleeved on the gear shaft, and its two ends abut against the universal coupling and the guide sleeve, respectively. Under the action of the shock-absorbing spring, there is a gap between the upper end of the steering shaft and the upper end of the steering riser.

2. The floating shock absorption structure for the steering wheel of a tracked rotary tiller according to claim 1, characterized in that: A support bearing is also provided between the steering shaft and the steering riser. The support bearing is located at the upper end of the steering riser and is fixedly connected to the steering riser.

3. The floating shock absorption structure for the steering wheel of a tracked rotary tiller according to claim 2, characterized in that: The upper diameter of the steering shaft is smaller than the diameter of the middle part of the steering shaft, so that the upper part of the steering shaft forms a stepped structure; the upper end of the steering shaft passes through the support bearing and is clearance-fitted with the support bearing; a limiting ring is also provided at the upper end of the steering shaft, the support bearing is located between the stepped structure and the limiting ring, and the distance between the stepped structure and the limiting ring is greater than the axial thickness of the support bearing.

4. The floating shock absorption structure for the steering wheel of a tracked rotary tiller according to claim 1, characterized in that: A wear-resistant washer is also provided between the shock-absorbing spring and the guide sleeve.

5. The track rototiller steering wheel floatation and shock absorption structure according to claim 1, characterized in that: The universal coupling is a cross-pin universal coupling.

6. The track rototiller steering wheel floatation and shock absorption structure of claim 1, wherein: The support plate has a through hole for a steering shaft or universal coupling to pass through.

7. The track rototiller steering wheel floatation and shock absorption structure according to claim 1, characterized in that: The lower end of the steering riser is formed with a connecting flange, which is fixedly connected to the support plate by bolts.

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