Clutch type safety handrail of riding type mini-tiller

Abstract

The utility model discloses a clutch type safety handrail of a riding type mini-tiller, which comprises an operation assembly used for controlling a clutch to be disconnected or combined, a handrail mounting seat and a safety handrail arranged on the handrail mounting seat, the handrail mounting seat is fixedly arranged on one side of a seat support of the mini-tiller, and the safety handrail is arranged on the handrail mounting seat. The safety handrail is rotatably mounted on the handrail mounting seat, and can rotate back and forth around the handrail mounting seat and be positioned; the operation assembly is installed on the safety handrail. The safety handrail is used for installing the operation assembly, and the safety handrail is installed on one side of the seat and can rotate and be positioned, so that different use working conditions are met, the operation assembly can be held by one hand on the seat to achieve separation and reunion, and the safety handrail can also be positioned after rotating to the backrest of the seat and achieve separation and reunion operation at the rear end of the seat.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery, specifically to a clutch-type safety handle for a ride-on micro-tiller. Background Technology

[0002] Currently, the mainstream mini-tillers on the market are mainly walk-behind models. These models require a person to follow behind and push the tiller, resulting in high labor intensity and low operating efficiency. To reduce labor intensity and improve operating efficiency, some four-wheeled ride-on mini-tillers have gradually appeared on the market. These have a seat for the operator to sit on, a foot pedal at the bottom of the seat to control clutch engagement or disengagement, and a rear-mounted clutch control mechanism at the rear of the seat. This mechanism allows the driver to leave the driver's seat and operate the rear-mounted clutch control mechanism to engage or disengage the clutch when encountering ditches or bumpy roads.

[0003] Existing rear-mounted clutch mechanisms mainly include two types: one is directly mounted behind the seat, which limits operating space and easily damages the seat after prolonged use. The other type includes an operating component and an operating frame located behind the tiller body. The operating component, mounted on the frame, controls the engagement or disengagement of the clutch on the tiller; the operating frame is located behind the seat and can steer relative to the front gearbox mounted on the tiller body. Both the operating frame and the seat are mounted on the rear frame of the tiller body, which can also steer relative to the front gearbox. This rear-mounted clutch mechanism avoids seat damage by adding an operating frame and provides more operating space. The frame also allows for easy hand support during operation. However, its structure is more complex, and being located behind the seat, it can only be operated after the driver leaves the driver's seat. It cannot be operated while in the driver's seat, nor can it provide manual assistance when the driver's legs are tired. Furthermore, the clutch mechanism is located at the rear, providing a handhold only when the driver is away from the driver's seat. During normal driving, it offers no leverage and is therefore a single-function device. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the purpose of this utility model is to provide a clutch-type safety handle for a ride-on mini-tiller, which solves the problem that the rear-mounted clutch mechanism of the existing ride-on mini-tiller has a single function and a single installation position, and cannot meet the problem of switching between two clutch control mechanisms during normal driving.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A clutch-type safety grab handle for a ride-on mini-tiller includes an operating component for controlling clutch engagement or disengagement, a grab handle mounting base, and a safety grab handle mounted on the mounting base. The mounting base is fixedly installed on one side of the mini-tiller's seat frame, and the safety grab handle is rotatably mounted on the mounting base, capable of rotating and positioning itself around the mounting base. The operating component is mounted on the safety grab handle. Thus, when the driver is seated, the safety grab handle rotates forward to a horizontal position, serving as a side guard for the driver and allowing one hand to hold onto it. This provides a side guard and a handhold during turns or driving, preventing the driver from falling off the seat due to instability. Simultaneously, during driving, the operating component on the safety grab handle is located beside the arm, allowing the driver to directly grasp the operating component to engage or disengage the clutch after the foot pedal becomes tired. This satisfies both clutch control requirements during normal driving. When encountering bumpy roads or ditches, requiring the driver to dismount, the safety handle should be rotated backward and locked in place. Then, the operator can walk around to the back of the tiller and engage / disengage the clutch by gripping the control components. At this point, the safety handle is tilted backward, away from the seat, providing ample operating space and ease of operation. The safety handle also provides support for stability. The safety handle is rotatably mounted on its mounting base and can be locked at the desired angle to meet the needs of different working conditions.

[0007] Furthermore, the handrail mounting base is plate-shaped, and a mounting plate is fixedly installed at one end of the safety handrail near the mounting base. The mounting plate is positioned on the outside of the handrail mounting base and is rotatably connected by a rotating pin. In this way, when the safety handrail is moved under external force, the mounting plate connected to it can rotate around the rotating pin.

[0008] Furthermore, an arc-shaped guide hole is provided in the middle of the handrail mounting base. A positioning screw with one end passing through the arc-shaped guide hole is mounted on the mounting plate. A positioning nut that mates with the positioning screw is provided on the positioning screw and on one side of the handrail mounting base. When the positioning screw rotates under external force and moves axially, if the distance between its nut and the positioning nut is greater than the sum of the thicknesses of the handrail mounting base and the mounting plate, the safety handrail is in a movable state. If the distance between the nut and the positioning nut is equal to the sum of the thicknesses of the handrail mounting base and the mounting plate, the safety handrail is in a locked and fixed state. Thus, in use, by rotating the positioning screw, the distance between the nut and the positioning nut changes. When the distance between the nut and the positioning nut is equal to the sum of the thicknesses of the mounting plate and the handrail mounting base, the mounting plate and the handrail mounting base are clamped and fixed between the nut and the positioning nut of the positioning screw. After the mounting plate is locked and fixed, the safety handrail fixedly connected to it is also locked and positioned. When the positioning screw is rotated in the reverse direction, increasing the gap between its nut and the positioning nut, gaps appear between the handrail mounting base and the mounting plate, between the mounting plate and the nut, and between the handrail mounting base and the positioning nut. At this point, when the safety handrail is moved, the positioning screw can move along the arc-shaped guide hole around the rotating pin. The arc-shaped guide hole guides the positioning screw and, together with the rotating pin, provides two-point positioning of the mounting plate, ensuring a stable fixing structure when the mounting plate is locked. The length of the arc-shaped guide hole limits the maximum rotation angle of the safety handrail, facilitating driver operation.

[0009] Furthermore, the center of the positioning screw's movement path in the arc-shaped guide hole overlaps with the center of the rotating pin. Thus, the center of the rotating pin is the center of the positioning screw's rotation path during the safety handrail's rotation, ensuring smooth rotation of the safety handrail.

[0010] Furthermore, the armrest mounting base is welded and fixed to the side end of the tiller seat bracket. This ensures the armrest mounting base is firmly secured and less prone to loosening due to vibration.

[0011] Furthermore, the operating component includes a mounting base and a rotatable handle mounted on the mounting base, with a clutch cable connected to the handle; the mounting base is fixedly mounted on the safety handrail by fasteners. This allows the operating component to be detachably mounted on the safety handrail, facilitating installation, adjustment, and maintenance. The clutch cable is connected to the clutch fork, enabling the clutch to engage when the handle is gripped inwards and disengage when the handle is released. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the clutch-type safety armrest in the embodiment, showing the safety armrest rotating to the front locking and positioning state of the seat.

[0013] Figure 2 This is a schematic diagram of the structure of the clutch-type safety armrest in the embodiment, showing the safety armrest rotated to the locked state after the seat is engaged.

[0014] Figure 3 for Figure 2 Top view.

[0015] Figure 4 for Figure 2 The right view. Detailed Implementation

[0016] 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 some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. 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 represents selected embodiments of the 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.

[0017] 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 utility model, 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 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. Therefore, they should not be construed as limitations on this utility model. 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 utility model, 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 utility model based on the specific circumstances.

[0018] like Figures 1-4As shown, the clutch-type safety grab handle of the riding-type tiller provided in this embodiment includes an operating component 4 for controlling the disengagement or engagement of the clutch, a grab handle mounting base 2, and a safety grab handle 3 mounted on the grab handle mounting base 2. The grab handle mounting base 2 is fixedly mounted on one side of the tiller seat bracket 1, and the safety grab handle 3 is rotatably mounted on the grab handle mounting base 2, capable of rotating back and forth and positioning around the grab handle mounting base 2; the operating component 4 is mounted on the safety grab handle 3. Thus, when the driver is sitting in the seat (not shown in the figure), the safety grab handle 3 rotates forward to a horizontal position, serving as a side guard for the driver, allowing one hand to hold onto the safety grab handle 3. This provides a side guard and a handhold during turns or driving, preventing the driver from falling off the seat due to instability. Simultaneously, during driving, the operating component 4 on the safety grab handle 3 is located next to the arm, allowing the driver to directly grasp the operating component 4 to engage or disengage the clutch after the foot pedal becomes tired, thus satisfying two clutch control requirements during normal driving. When encountering bumpy roads or ditches, requiring the driver to dismount, the safety handle 3 is rotated backward and locked in place. The operator then moves around to the back of the tiller and can engage or disengage the clutch by gripping the operating component 4. At this time, the safety handle 3 is tilted backward, away from the seat, providing ample operating space and ease of operation. Simultaneously, the safety handle 3 can also be used for support, enhancing stability. The safety handle 3 is rotatably mounted on the handle mounting base 2 and can be locked in place after being rotated to the desired angle, thus meeting the needs of different working conditions.

[0019] like Figure 3 , Figure 4 As shown, in this embodiment, the handrail mounting base 2 is plate-shaped. A mounting plate 31 is fixedly installed at one end of the safety handrail 3 near the handrail mounting base 2. The mounting plate 31 is placed on the outside of the handrail mounting base 2 and is rotatably connected by a rotating pin 5. In this way, when the safety handrail 3 is moved under the action of external force, the mounting plate 31 connected to it can rotate around the rotating pin 5.

[0020] Furthermore, an arc-shaped guide hole 21 is provided in the middle of the handrail mounting base 2. A positioning screw 6 with one end passing through the arc-shaped guide hole 21 is mounted on the mounting plate 31. A positioning nut (not shown in the figure) that cooperates with the positioning screw 6 is provided on the positioning screw 6 and on one side of the handrail mounting base 2. The center of the moving path of the positioning screw 6 in the arc-shaped guide hole 21 overlaps with the center of the rotating pin 5. When the positioning screw 6 rotates under the action of external force and moves axially, if the distance between its nut and the positioning nut is greater than the sum of the thicknesses of the handrail mounting base 2 and the mounting plate 31, the safety handrail 3 is in an active state. If the distance between the nut and the positioning nut of the positioning screw 6 is equal to the sum of the thicknesses of the handrail mounting base 2 and the mounting plate 31, the safety handrail 3 is in a locked and fixed state. In this way, during use, rotating the positioning screw 6 changes the distance between the screw nut and the positioning nut. When the distance between the positioning nut and the screw nut is equal to the sum of the thicknesses of the mounting plate 31 and the handrail mounting base 2, the mounting plate 31 and the handrail mounting base 2 are clamped and fixed between the screw nut and the positioning nut of the positioning screw 6. After the mounting plate 31 is locked and fixed, the safety handrail 3, which is fixedly connected to it, is also locked and positioned. When the positioning screw 6 is rotated in the opposite direction, increasing the distance between the screw nut and the positioning nut, gaps are created between the handrail mounting base 2 and the mounting plate 31, between the mounting plate 31 and the screw nut, and between the handrail mounting base 2 and the positioning nut. At this time, when the safety handrail 3 is moved, the positioning screw 6 can move along the arc-shaped guide hole 21 with the rotating pin 5 as the center. The arc-shaped guide hole 21 guides the positioning screw 6 and, together with the rotating pin 5, achieves two-point positioning of the mounting plate 31, making the mounting plate 31 stable when locked. The length of the arc-shaped guide hole 21 limits the maximum rotation angle of the safety armrest 3, facilitating driver operation. In practice, before getting into the seat, unlock the safety armrest 3, rotate it behind the seat back, then get in the vehicle. Next, rotate the safety armrest 3 forward until it is in a lateral position, then rotate the positioning screw 6 to lock the safety armrest 3 in place. At this point, the safety armrest 3 serves as arm support and, while driving, allows the driver to release the foot clutch and manually operate the control component 4 on the safety armrest 3 to engage or disengage the clutch. When encountering bumps or rough roads, unlock the safety armrest 3, rotate it behind the seat back, get off the seat, walk around to the back of the seat, lock the safety armrest 3, and then directly operate the control component 4 to engage or disengage the clutch.

[0021] Furthermore, the armrest mounting base 2 is welded and fixed to the side end of the mini-tiller seat bracket 1, and the mounting plate 31 is fixed to the safety armrest 3 by welding. In this way, the armrest mounting base 2 is firmly fixed and is not easy to loosen due to vibration.

[0022] Furthermore, the operating component 4 includes a mounting base 41 and a rotatable handle 42 mounted on the mounting base 41, with a clutch cable 43 connected to the handle; the mounting base 41 is fixedly mounted on the safety handrail 3 by fasteners. Specifically, in this embodiment, the operating component 4 is located at the lower end of the safety handrail 3 when the safety handrail 3 is horizontal and facing forward; when the safety handrail 3 is rotated backward and tilted, the operating component 4 is located in front of the safety handrail 3. Thus, the operating component 4 can be detachably mounted on the safety handrail 3, facilitating installation, adjustment, and maintenance, while also preventing accidental operation. The clutch cable is connected to the clutch fork, allowing the clutch to be pulled when the handle is gripped inward, engaging the clutch, and disengaging the clutch when the handle is released.

[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 clutch-type safety handle for a ride-on mini-tiller, comprising an operating component for controlling the disengagement or engagement of the clutch, characterized in that, It also includes a handrail mounting base and a safety handrail mounted on the handrail mounting base. The handrail mounting base is fixedly mounted on one side of the micro-tiller seat bracket, and the safety handrail is rotatably mounted on the handrail mounting base and can rotate back and forth around the handrail mounting base and be positioned. The operating components are mounted on the safety handrail.

2. The clutch-type safety handle of the riding-type micro-tiller according to claim 1, characterized in that, The handrail mounting base is plate-shaped, and a mounting plate is fixedly installed at one end of the safety handrail near the handrail mounting base. The mounting plate is placed on the outside of the handrail mounting base and is rotatably connected by a rotating pin.

3. The clutch-type safety handle of the riding-type micro-tiller according to claim 2, characterized in that, An arc-shaped guide hole is provided in the middle of the handrail mounting base. A positioning screw with one end passing through the arc-shaped guide hole is mounted on the mounting plate. A positioning nut that cooperates with the positioning screw is provided on the positioning screw and on one side of the handrail mounting base. When the positioning screw rotates under the action of external force and moves axially, if the distance between its nut and the positioning nut is greater than the sum of the thicknesses of the handrail mounting base and the mounting plate, the safety handrail is in a movable state. If the distance between the nut of the positioning screw and the positioning nut is equal to the sum of the thicknesses of the handrail mounting base and the mounting plate, the safety handrail is in a locked and fixed state.

4. The clutch-type safety handle of the riding-type micro-tiller according to claim 3, characterized in that, The center of the positioning screw on the moving path of the arc-shaped guide hole overlaps with the center of the rotating pin.

5. The clutch-type safety handle of the riding-type micro-tiller according to claim 1, 2, 3, or 4, characterized in that, The armrest mounting base is welded and fixed to the side of the micro-tiller seat bracket.

6. The clutch-type safety handle of the riding-type micro-tiller according to claim 5, characterized in that, The operating components include a mounting base and a rotatable handle mounted on the mounting base, with a clutch cable connected to the handle; the mounting base is fixedly mounted on the safety handrail by fasteners.

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