Branch crusher armrest frame convenient for adjusting mounting angle

Abstract

The utility model discloses a branch crusher armrest frame convenient to adjust the installation angle, which comprises an armrest frame main body and a fixed fluted disc fixedly connected with a feeding cylinder, the armrest frame main body comprises an armrest rod, a connecting seat and a movable fluted disc, the middle part of the connecting seat is hollow, the inner end of the connecting seat is fixedly connected with the movable fluted disc, and the side wall of the connecting seat is fixedly connected with the armrest rod; a pressure spring is arranged in the hollow part of the connecting seat, the center line of the pressure spring is perpendicular to the diameter line of the movable fluted disc, and the two ends of the pressure spring abut against the movable fluted disc and the inner wall of the outer end of the connecting seat respectively; the movable fluted disc is pressed and positioned on the fluted disc through a pressure spring and is meshed with the fixed fluted disc, and the grab rail can drive the movable fluted disc to rotate around the center line of the fixed fluted disc under the action of external force and is meshed and positioned with the fixed fluted disc under the axial pressing of the pressure spring.

Description

Technical Field

[0001] This utility model relates to the field of garden machinery and equipment, specifically to a handrail frame for a wood chipper that is easy to adjust the installation angle. Background Technology

[0002] Wood chippers are suitable for gardens, orchards, forest farms, tea plantations, nurseries, and landscaping, primarily used to shred wood, branches, leaves, and other plant matter into chips. Existing wood chippers mainly consist of a power output component, a feeding mechanism, a shredding mechanism, a discharge mechanism, and a traveling mechanism. The feeding mechanism includes a hopper, with a hand-held control lever fixedly mounted on the upper side wall of the hopper (as disclosed in application number 2022107645721). This hand-held control lever is U-shaped, with a fixed installation height, and cannot be adjusted according to the operator's habits.

[0003] The existing handrails on mini tillers consist of left and right handles. The front ends of the handles are mounted on the handrail base of the machine body, while the rear ends are for gripping. To accommodate different user needs and adjust the height of the handrail, current mini tiller handrails are primarily adjusted via gear meshing. The front ends of the left and right handles are rotatably mounted on the left and right sides of the handrail base via a screw-driven shaft and locked with nuts. Meshing gears (such as…) are located on the mating surfaces of the front ends of the handles and the outer sides of the handrail base. Figure 1 (As shown). When adjusting the height of the handrail frame, the nut must first be loosened to disengage the gear on the handrail seat from the gear on the handle. Then, the handrail frame is rotated to raise or lower it to the desired height. Finally, the nut is tightened, and the adjusted handrail frame re-engages with the handrail seat and is fixed in place. This adjustment mechanism is inconvenient to operate and is not easy to promote. 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 handrail frame for a wood chipper that is easy to adjust the installation angle, thereby solving the problem that the existing handrail frame is inconvenient to adjust and not easy to promote.

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

[0006] A handrail for a wood chipper with an adjustable installation angle includes a handrail body and a fixed gear plate fixedly connected to the feed cylinder. The handrail body includes a handrail, a connecting seat, and a movable gear plate. The connecting seat is hollow in the middle, with its inner end fixedly connected to the movable gear plate and its side wall fixedly connected to the handrail. A compression spring is provided inside the hollow part of the connecting seat. The center line of the compression spring is perpendicular to the diameter line of the movable gear plate, and both ends of the compression spring abut against the movable gear plate and the inner wall of the outer end of the connecting seat, respectively. The movable gear plate is pressed and positioned on the gear plate by the compression spring and engages with the fixed gear plate. The handrail can drive the movable gear plate to rotate around the center line of the fixed gear plate under the action of external force and engage with the fixed gear plate under the axial pressure of the compression spring. In this way, the fixed gear plate is fixedly installed on the feed cylinder of the wood chipper, the handrail is fixed to one side of the connecting seat, and the movable gear plate is provided at the end of the connecting seat, engaging with the fixed gear plate. Therefore, when the operator needs to adjust the installation angle of the handrail, pressing down or lifting the handrail under external force will cause the handrail to rotate together with the fixed connecting seat and the movable gear plate around the fixed gear plate. During the rotation, the movable gear plate moves along the inclined surface of the teeth under the action of external force and is continuously compressed axially by the compression spring during the rotation, engaging with the fixed gear plate. The two ends of the compression spring are always abutting against the inner wall of the outer end of the movable gear plate and the connecting seat, thus forming an axial compression on the movable gear plate whether it is stationary or rotating under force, pressing and positioning it on the side of the fixed gear plate, engaging and positioning it with the fixed gear plate. This setting only requires a certain amount of external force to rotate the movable gear plate during rotation and positioning. After rotating to the correct position, the handrail can be released, and the compression spring can directly press and position it, making the operation convenient.

[0007] Furthermore, the connecting seat includes a connecting cylinder and a cover plate. The inner end of the connecting cylinder is fixedly connected to the opposite side of the tooth surface of the movable gear plate. The cover plate is detachably installed on the outer end of the connecting cylinder. The cover plate and the hollow part of the connecting cylinder form an assembly space for assembling a compression spring. The two ends of the compression spring abut against the inner walls of the movable gear plate and the cover plate, respectively. Thus, with the connecting seat consisting of a connecting cylinder and a cover plate, the replacement and installation of the compression spring are convenient. The side end of the connecting cylinder in the connecting seat is welded and fixed to the handrail, ensuring a stable connection structure.

[0008] Furthermore, the fixed gear disc has a connecting shaft coaxial with it at its center, with its end penetrating the movable gear disc and adjacent to the inner wall of the cover plate. The compression spring is sleeved on the connecting shaft. Thus, with the connecting shaft on the fixed gear disc, the movable gear disc and the connecting cylinder are sleeved on the connecting shaft, allowing them to rotate around it, resulting in a more stable structure. Simultaneously, the compression spring sleeved on the connecting shaft guides the compression spring during compression and return.

[0009] Furthermore, a threaded hole is provided at the end of the connecting shaft. The compression spring is threaded through the cover plate by a bolt and engages with the threaded hole on the connecting shaft, thus abutting against the cover plate and the movable gear disc. In this way, the cover plate is connected and fixed to the connecting cylinder by the threaded engagement of the bolt and the threaded hole on the connecting shaft. The installation structure is stable and disassembly is also relatively convenient. At the same time, the distance between the cover plate and the movable gear disc can be finely adjusted as needed, thereby adjusting the axial pressure of the compression spring. This ensures that the compression spring can apply axial pressure to the movable gear disc when the handrail is fixed or rotated, preventing the movable gear disc from falling off the fixed gear disc.

[0010] Furthermore, the connecting shaft is integrally formed with the fixed gear disc, and a mounting protrusion is provided on the opposite side of the tooth surface of the fixed gear disc. This mounting protrusion facilitates insertion into the feed cylinder and welding it into the feed cylinder for secure fixing.

[0011] Furthermore, at least one locking washer is provided between the cover plate and the compression spring. In this way, when the operator is stationary and no further adjustment of the handrail is required, the locking washer can be placed inside the cover plate to increase the axial pressure of the compression spring, making it difficult for the handrail to be rotated. Attached Figure Description

[0012] Figure 1 The installation structure of the handlebar frame for a micro-tiller in the existing technology;

[0013] Figure 2 This is a schematic diagram of a half-section of the handrail frame of the wood chipper in the embodiment;

[0014] Figure 3 This is a schematic diagram of the installation structure of the handrail frame of the wood chipper in the embodiment. Detailed Implementation

[0015] 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.

[0016] 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.

[0017] like Figure 2 , Figure 3As shown, the handrail of the shredder provided in this embodiment, which facilitates the adjustment of the installation angle, includes a handrail body 2 and a fixed toothed disc 1 fixedly connected to the feed cylinder 5. The handrail body 2 includes a handrail 21, a connecting seat 22, and a movable toothed disc 23. The connecting seat 22 is hollow in the middle, with its inner end fixedly connected to the movable toothed disc 23 and its side wall fixedly connected to the handrail 21. A compression spring 3 is provided in the hollow part of the connecting seat 22. The center line of the compression spring 3 is perpendicular to the diameter line of the movable toothed disc 23, and the two ends of the compression spring 3 abut against the inner wall of the outer end of the movable toothed disc 23 and the connecting seat 22, respectively. The movable toothed disc 23 is pressed and positioned on the toothed disc by the compression spring 3 and meshes with the fixed toothed disc 1. The handrail 21 can drive the movable toothed disc 23 to rotate around the center line of the fixed toothed disc 1 under the action of external force, and mesh with the fixed toothed disc 1 under the axial pressure of the compression spring 3. Thus, the fixed toothed disc 1 is fixedly installed on the feed cylinder of the shredder, the handle 21 is fixed to one side of the connecting seat 22, and the end of the connecting seat 22 is provided with a movable toothed disc 23, which meshes with the fixed toothed disc 1. When the operator needs to adjust the installation angle of the handle 21, the handle 21 is pressed down or raised under external force. Upon receiving the external force, the handle 21 will drive the connecting seat 22 and the movable toothed disc 23, which are fixedly connected to it, to rotate together around the center line of the fixed toothed disc 1. During rotation, the movable toothed disc 23 moves along the inclined surface of the teeth under external force and is continuously subjected to axial compression by the compression spring 3, meshing with the fixed toothed disc 1. The two ends of the compression spring 3 are always abutting against the inner wall of the outer end of the movable toothed disc 23 and the connecting seat 22, thus ensuring that the movable toothed disc 23 is always axially compressed when stationary or rotating under force, pressing and positioning it on the toothed disc on one side of the fixed toothed disc 1, meshing and positioning it with the fixed toothed disc 1. When rotating and positioning, the movable gear plate 23 can be rotated with a certain external force. After rotating into position, the handle bar 21 can be released and the spring 3 can be pressed and positioned directly, making the operation convenient.

[0018] Specifically, the connecting seat 22 includes a connecting cylinder 221 and a cover plate 222 (in a specific implementation, the connecting seat 22 can be a cylindrical cover). The inner end of the connecting cylinder 221 is fixedly connected to the opposite side of the tooth surface of the movable gear disk 23. The cover plate 222 is detachably installed on the outer end of the connecting cylinder 221. The cover plate 222 and the hollow part of the connecting cylinder 221 form an assembly space for assembling the compression spring 3. The two ends of the compression spring 3 abut against the inner walls of the movable gear disk 23 and the cover plate 222, respectively. In this way, with the connecting seat 22 consisting of a connecting cylinder 221 and a cover plate 222, the replacement and installation of the compression spring 3 can be facilitated. The side end of the connecting cylinder 221 in the connecting seat 22 is welded and fixed to the handrail 21, and the connection structure is stable.

[0019] To facilitate the rotation of the movable gear disk 23, a connecting shaft 11 is provided in the middle of the fixed gear disk 1, coaxial with it and extending through the movable gear disk 23 and adjacent to the inner wall of the cover plate 222. The compression spring 3 is sleeved on the connecting shaft 11. Thus, with the connecting shaft 11 installed on the fixed gear disk 1, the movable gear disk 23 and the connecting cylinder 221 are sleeved on the connecting shaft 11, allowing them to rotate around the connecting shaft 11, resulting in a more stable structure. Simultaneously, the compression spring 3, sleeved on the connecting shaft 11, guides the compression spring 3 during compression and return.

[0020] Furthermore, a threaded hole 12 is provided at the end of the connecting shaft 11. The compression spring 3 passes through the cover plate 222 with a bolt and is threaded into the threaded hole 12 on the connecting shaft 11, thus abutting against the cover plate 222 and the movable gear plate 23. After the cover plate 222 is threaded into the threaded hole 12 on the connecting shaft 11 with the bolt, it is connected and fixed to the connecting cylinder 221. The installation structure is stable and easy to disassemble. At the same time, the distance between the cover plate 222 and the movable gear plate 23 can be finely adjusted as needed, thereby adjusting the axial pressure of the compression spring 3. This ensures that the compression spring 3 can apply axial pressure to the movable gear plate 23 when the handrail 21 is fixed or rotated, preventing the movable gear plate 23 from falling off the fixed gear plate 1. At the same time, it can ensure that a certain external force can be applied when the handrail 21 is pressed down or pulled up to rotate the handrail 21. To facilitate the rotation of the bolt, the nut of the bolt is star-shaped and has a large width.

[0021] Furthermore, the connecting shaft 11 is integrally formed with the fixed gear disc 1, and a mounting protrusion is provided on the opposite side of the tooth surface of the fixed gear disc 1. The mounting protrusion is coaxial with the connecting shaft 11 and integrally formed. The provided mounting protrusion can be easily inserted into the feed cylinder and welded and fixed to the feed cylinder.

[0022] In practice, at least one locking washer (not shown in the figure) can be placed between the cover plate 222 and the compression spring 3. In this way, when the operator is stationary and no further adjustment of the handrail 21 is needed, the locking washer can be placed inside the cover plate 222 to increase the axial pressure of the compression spring 3, making it difficult for the handrail 21 to be rotated.

[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 handrail for a wood chipper that is easy to adjust in terms of installation angle, characterized in that, The device includes a handrail frame body and a fixed gear plate fixedly connected to the feed cylinder. The handrail frame body includes a handrail, a connecting seat, and a movable gear plate. The connecting seat is hollow in the middle, with its inner end fixedly connected to the movable gear plate and its side wall fixedly connected to the handrail. A compression spring is provided in the hollow part of the connecting seat. The center line of the compression spring is perpendicular to the diameter line of the movable gear plate, and the two ends of the compression spring abut against the movable gear plate and the inner wall of the outer end of the connecting seat, respectively. The movable gear plate is pressed and positioned on the gear plate by the compression spring and meshes with the fixed gear plate. The handrail can drive the movable gear plate to rotate around the center line of the fixed gear plate under the action of external force and mesh with the fixed gear plate under the axial pressure of the compression spring.

2. The adjustable wood chipper handrail according to claim 1, characterized in that, The connecting seat includes a connecting cylinder and a cover plate. The inner end of the connecting cylinder is fixedly connected to the opposite side of the tooth surface of the movable gear plate. The cover plate is detachably installed on the outer end of the connecting cylinder. The cover plate and the hollow part of the connecting cylinder form an assembly space for assembling a compression spring. The two ends of the compression spring abut against the inner wall of the movable gear plate and the cover plate, respectively.

3. The adjustable wood chipper handrail according to claim 2, characterized in that, The fixed gear disc has a connecting shaft in the middle that is coaxial with it and has an end that passes through the movable gear disc and is adjacent to the inner wall of the cover plate. The compression spring is sleeved on the connecting shaft.

4. The adjustable wood chipper handrail according to claim 3, characterized in that, A threaded hole is provided at the end of the connecting shaft. The compression spring passes through the cover plate with a bolt and is threaded into the threaded hole on the connecting shaft, thus abutting against the cover plate and the movable gear plate.

5. The adjustable mounting angle handrail for a wood chipper according to claim 3 or 4, characterized in that, The connecting shaft is integrally formed with the fixed gear plate, and an installation protrusion is provided on the opposite side of the tooth surface of the fixed gear plate.

6. The adjustable mounting angle handrail for a wood chipper according to claim 2, 3, or 4, characterized in that, At least one locking washer is provided between the cover plate and the compression spring.

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