Traveling wheel adjusting mechanism and mini-tiller

Abstract

The utility model belongs to the technical field of agricultural machinery, and provides a walking wheel adjusting mechanism and a mini-tiller, the walking wheel adjusting mechanism comprises a mounting rack and a walking wheel arranged on the mounting rack and rotationally connected with the mounting rack, and the first end of the mounting rack is hinged to a machine body; the second end of the mounting frame can swing in a reciprocating mode between the folding position and the unfolding position around the hinge center line of the mounting frame, and the walking wheel is arranged at the second end of the mounting frame; the walking wheel adjusting mechanism further comprises a locking assembly, the locking assembly has an unlocking state and a locking state which can be switched mutually, when the locking assembly is in the locking state, the locking assembly locks the mounting frame, and when the locking assembly is in the unlocking position, the locking assembly unlocks the mounting frame. The walking wheel adjusting mechanism and the mini-tiller are simple in structure, reasonable in design, large in digging depth and good in tillage effect.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically to a walking wheel adjustment mechanism and a micro-tiller. Background Technology

[0002] A mini tiller includes a body, tillage blades mounted on the body, wheels, and a drive mechanism for rotating the tillage blades. In non-tillage mode, to facilitate movement and reduce the risk of the tillage blades colliding with the ground during movement, the lowest point of the wheels is usually lower than or flush with the lowest point of the tillage blades.

[0003] However, the height of the wheels on existing micro-tillers cannot be adjusted, which means that the wheels still support the entire micro-tiller during tillage. This results in a smaller force exerted by the micro-tiller on the tilled ground, leading to a lower digging depth. Furthermore, the larger force exerted by the wheels on the tilled ground compacts the already dug soil, resulting in poor tillage performance. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of this utility model is to provide a walking wheel adjustment mechanism and a micro-tiller to solve or alleviate the above-mentioned technical problems existing in the prior art.

[0005] To achieve the above objectives, on the one hand, this utility model provides a walking wheel adjustment mechanism, including a mounting frame and a walking wheel disposed on the mounting frame and rotatably connected to the mounting frame. The first end of the mounting frame is hinged to the machine body so that the second end of the mounting frame can swing back and forth between a folded position and an unfolded position around its own hinge center line. The walking wheel is disposed at the second end of the mounting frame.

[0006] The wheel adjustment mechanism further includes a locking component, which has an unlocked state and a locked state that can be switched between each other. When the locking component is in the locked state, it locks the mounting bracket to the unfolded position or the folded position. When the locking component is in the unlocked position, it releases the lock on the mounting bracket, allowing the mounting bracket to swing back and forth between the unfolded position and the folded position.

[0007] Furthermore, the locking assembly includes a locking element, the mounting bracket is provided with a first socket, the body is provided with a corresponding second socket, and at least one of the first socket and the second socket is provided in two, and when locking, the locking element is inserted into the corresponding first socket and the second socket.

[0008] Furthermore, there are two first sockets and one second socket. When the mounting bracket is in the unfolded position, one of the first sockets corresponds to the second socket. When the mounting bracket is in the folded position, the other first socket corresponds to the second socket.

[0009] Furthermore, a sliding groove is provided between the two first sockets. The sliding groove is arc-shaped, and the center line of the sliding groove coincides with the hinge center line of the mounting bracket. The width of the sliding groove is smaller than the inner diameter of the first socket. The sliding groove communicates with the two first sockets.

[0010] The locking element has a recessed portion and a locking portion, wherein the outer diameter of the recessed portion is adapted to the width of the slide groove, and the outer diameter of the locking portion is adapted to the inner diameter of the first socket. The locking element is slidably connected to the body so that the locking element has a lock position and an unlock position that can be switched between each other. When the locking element is in the lock position, the locking portion corresponds to the first socket. When the locking element is in the unlock position, the recessed portion corresponds to the first socket.

[0011] Furthermore, the locking assembly also includes an elastic element, the two ends of which are connected to the locking element and the mounting bracket respectively. In its natural state, the elastic element applies a spring force to the locking element, causing the locking element to tend to move from the unlocked position to the locked position.

[0012] On the other hand, this utility model also provides a micro-tiller, including a body, tillage blades disposed on the body and a drive device for driving the tillage blades to rotate, and also includes the walking wheel adjustment mechanism described in any one of the above.

[0013] Furthermore, it also includes a support rod, which has a supported state and a non-supported state. When the support rod is in the supported state, one end of the support rod is connected to the machine body and the other end extends downward. When the support rod is in the non-supported state, one end of the support rod is connected to the machine body and the other end extends upward.

[0014] Furthermore, the support rod is V-shaped so that when the support rod is in the supported state, the lower end of the support rod tilts towards the rear of the tiller.

[0015] Furthermore, it also includes:

[0016] A first pin is provided, wherein a sleeve is provided on the body, the sleeve is provided with a third insertion hole, and the end of the support rod is provided with a fourth insertion hole, and the first pin is movably inserted into the corresponding third and fourth insertion holes; and

[0017] A U-shaped pin is inserted at the end of the first pin so that the first pin will not move out of the third and fourth sockets.

[0018] Furthermore, one end of the support rod is provided with a plurality of the fourth insertion holes.

[0019] The beneficial effects of this utility model are:

[0020] The walking wheel adjustment mechanism and micro-tiller provided by this utility model allow the walking wheels to be folded during tillage, so that the micro-tiller is mainly supported by the tillage blades. This increases the interaction force between the tillage blades and the tillage ground, thereby improving the digging depth and tillage effect. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0022] Figure 1 This is a perspective view of a tiller provided in an embodiment of the present invention in a first direction (with the mounting frame in the unfolded state).

[0023] Figure 2 for Figure 1 An enlarged view of part A shown;

[0024] Figure 3 for Figure 1 The tiller shown is a perspective view in the second direction (with the mounting bracket in the extended position).

[0025] Figure 4 for Figure 3 An enlarged view of section B is shown below;

[0026] Figure 5 for Figure 1 The tiller shown is a perspective view in the second direction; (with the mounting bracket folded down).

[0027] Figure 6 for Figure 1 A perspective view of the locking element of the micro-tiller shown.

[0028] Figure label:

[0029] 100. Body; 200. Tiller blade; 300. Drive unit; 400. Wheels; 510. Mounting bracket; 511. First insertion hole; 512. Slide groove; 520. Locking element; 521. Locking part; 522. Alternating part; 530. Elastic element; 600. Support rod; 610. Fourth insertion hole; 700. Sleeve; 710. Third insertion hole; 800. First pin; 900. U-shaped pin. Detailed Implementation

[0030] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0031] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0032] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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.

[0033] 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 technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] like Figure 1-6 As shown, this utility model provides a walking wheel adjustment mechanism, including a mounting frame 510 and a walking wheel 400 disposed on the mounting frame 510 and rotatably connected to the mounting frame 510.

[0037] The first end of the mounting bracket 510 is hinged to the machine body, allowing the second end of the mounting bracket 510 to reciprocate between a folded position and an unfolded position around its own hinge center line. The traveling wheel 400 is located at the second end of the mounting bracket 510. Specifically, when the mounting bracket 510 is in the folded position, the second end of the mounting bracket 510 is positioned higher, so that the lowest point of the traveling wheel 400 is above the lowest point of the tiller 200. When the mounting bracket 510 is in the unfolded position, the second end of the mounting bracket 510 is positioned lower, so that the lowest point of the traveling wheel 400 is lower than or flush with the lowest point of the tiller 200.

[0038] The wheel adjustment mechanism also includes a locking component, which has an unlocked state and a locked state that can be switched between each other. When the locking component is in the locked state, it locks the mounting bracket 510 to lock the mounting bracket 510 in the unfolded position or the folded position. When the locking component is in the unlocked position, it releases the lock on the mounting bracket 510 so that the mounting bracket 510 can swing back and forth between the unfolded position and the folded position.

[0039] Specifically, during operation, the mounting frame 510 is placed in the folded position during tillage, and the locking component is used to lock the mounting frame 510 in the folded position, so that the lowest point of the traveling wheel 400 is above the lowest point of the tillage blade 200, so that the tillage blade 200 is in close contact with the tillage ground, while the traveling wheel 400 is in slight contact or no contact with the tillage ground, thereby increasing the force exerted by the tillage blade 200 on the tillage ground, and thus improving the tillage depth and tillage effect.

[0040] like Figure 1 , 2As shown, in this embodiment, the locking component includes a locking element 520, the mounting bracket 510 is provided with a first socket 511, and the body 100 is provided with a corresponding second socket. At least one of the first socket 511 and the second socket is provided in two. When locking, the locking element 520 is inserted into the corresponding first socket 511 and the second socket.

[0041] Specifically, when there are two first sockets 511 and one second socket, in order to facilitate the explanation of the principle of this scheme, we will name the two first sockets 511 as first socket A and first socket B respectively.

[0042] When the mounting bracket 510 is in the unfolded position, the first socket A corresponds to the second socket, and the locking element 520 is inserted into the first socket A and the second socket. With the cooperation of the locking element 520 and the first socket A and the second socket, the mounting bracket 510 is locked in the unfolded position. When the mounting bracket 510 is in the folded position, the first socket B corresponds to the second socket, and the locking element 520 is inserted into the first socket B and the second socket. With the cooperation of the locking element 520 and the first socket B and the second socket, the mounting bracket 510 is locked in the folded position.

[0043] When there are two second sockets and one first socket 511, in order to facilitate the explanation of the principle of this scheme, we will name the two second sockets as second socket A and second socket B respectively.

[0044] When the mounting bracket 510 is in the unfolded position, the second socket A corresponds to the first socket 511, and the locking element 520 is inserted into the second socket A and the first socket 511. With the cooperation of the locking element 520 and the second socket A and the first socket 511, the mounting bracket 510 is locked in the unfolded position. When the mounting bracket 510 is in the folded position, the second socket B corresponds to the first socket 511, and the locking element 520 is inserted into the second socket B and the first socket 511. With the cooperation of the locking element 520 and the second socket B and the first socket 511, the mounting bracket 510 is locked in the folded position.

[0045] The locking component provided in this embodiment has a simple structure.

[0046] like Figure 1 , 2 As shown, in this embodiment, there are two first sockets 511 and one second socket. When the mounting bracket 510 is in the unfolded position, one of the first sockets 511 corresponds to the second socket. When the mounting bracket 510 is in the folded position, the other first socket 511 corresponds to the second socket.

[0047] like Figure 1 , 2 As shown in Figure 6, in this embodiment, a sliding groove 512 is provided between the two first insertion holes 511. The sliding groove 512 is arc-shaped, and the center line of the sliding groove 512 coincides with the hinge center line of the mounting bracket 510. The width of the sliding groove 512 is smaller than the inner diameter of the first insertion hole 511, and the sliding groove 512 is connected to the two first insertion holes 511.

[0048] The locking element 520 has a recess 522 and a locking part 521, wherein the outer diameter of the recess 522 is adapted to the width of the slide groove 512, and the outer diameter of the locking part 521 is adapted to the inner diameter of the first insertion hole 511. The locking element 520 is slidably connected to the body so that the locking element 520 has a locking position and an unlocking position that can be switched between each other.

[0049] When the locking element 520 is in the locked position, the locking part 521 corresponds to the first insertion hole 511. Since the outer diameter of the locking part 521 is larger than the outer diameter of the slide groove 512, the locking element 520 cannot slide in the slide groove 512. With the cooperation of the locking part 521 and the first insertion hole 511, the purpose of locking the mounting bracket 510 is achieved.

[0050] When the locking element 520 is in the unlocked position, the clearance part 522 corresponds to the first insertion hole 511. Since the outer diameter of the clearance part 522 is smaller than the inner diameter of the first insertion hole 511, the locking element 520 can slide in the two first insertion holes 511 and the slide groove 512 during the swinging of the mounting bracket 510, thereby facilitating the swinging of the mounting bracket 510 from the folded position to the unfolded position or from the unfolded position to the folded position.

[0051] Specifically, during use, when it is necessary to swing the mounting bracket 510 from the folded position to the unfolded position or from the unfolded position to the folded position, firstly, switch the locking component from the locked state to the unlocked state to release the lock on the mounting bracket 510. Specifically, move the locking element 520 from the locked position to the unlocked position so that the clearance part 522 corresponds to the first insertion hole 511. Then, swing the mounting bracket 510 from the folded position to the unfolded position or from the unfolded position to the folded position. Finally, move the locking element 520 to the locked position to achieve the purpose of locking the mounting bracket 510 in the unfolded or folded position. The operation is convenient.

[0052] like Figure 3 , 4As shown, in this embodiment, the locking assembly further includes an elastic element 530. The two ends of the elastic element 530 are connected to the locking element 520 and the mounting bracket 510, respectively. In its natural state, the elastic element 530 applies a spring force to the locking element 520 so that the locking element 520 tends to move from the unlocked position to the locked position.

[0053] Specifically, the locking element 520 is moved to the unlocked position to release the locking of the mounting bracket 510. After the mounting bracket 510 is moved to the unfolded or folded position, the force applied to the locking element 520 is stopped. Under the action of the elastic element 530, the locking element 520 is moved from the unlocked position to the locked position, thereby achieving the purpose of locking the mounting bracket 510, improving the convenience of operation. In its natural state, the elastic element 530 can keep the locking element 520 in the locked position, thereby improving the stability of the locking.

[0054] It should be noted that the elastic element 530 can be any component capable of applying elastic force to the locking element 520, such as a gas spring, hydraulic spring, rubber spring, or other spring. Without imposing too many restrictions, in this embodiment, the elastic element 530 is a spring.

[0055] like Figure 1-5 As shown, this utility model also provides a micro-tiller, including a body, tillage blades 200 mounted on the body, and a drive device 300 for driving the tillage blades 200 to rotate. The drive device 300 can be an internal combustion engine or an electric motor. It also includes the wheel adjustment mechanism described in any of the above embodiments.

[0056] like Figure 1 , 3 As shown in Figure 5, in this embodiment, the micro-tiller also includes a support rod 600, which has a supported state and a non-supported state. When the support rod 600 is in the supported state, one end of the support rod 600 is connected to the machine body and the other end extends downward. When the support rod 600 is in the non-supported state, one end of the support rod 600 is connected to the machine body and the other end extends upward.

[0057] Specifically, during tillage, the support rod 600 is positioned in a supported state, providing support to the tiller through its lower end. This appropriately reduces the force between the tiller blades 200 and the tilled land, thereby reducing the resistance experienced by the tiller during movement. Simultaneously, when tillage is paused, the cooperation between the tiller blades 200 and the support rod 600 provides excellent support for the tiller without needing to lower the wheels 400.

[0058] like Figure 1 , 3As shown in Figure 5, in this embodiment, the support rod 600 is V-shaped so that when the support rod 600 is in the supported state, the lower end of the support rod 600 is inclined toward the rear of the micro-tiller, which forms a guide slope, thereby reducing the resistance of the tilled ground acting on the support rod 600 during the movement of the micro-tiller.

[0059] like Figure 1 , 2 As shown in Figure 5, this embodiment also includes a first pin 800 and a U-shaped pin 900. A sleeve 700 is provided on the body, and a third insertion hole 710 is provided on the sleeve 700. A fourth insertion hole 610 is provided at the end of the support rod 600. The first pin 800 is movably inserted into the corresponding third insertion hole 710 and fourth insertion hole 610. The U-shaped pin 900 is inserted into the end of the first pin 800 so that the first pin 800 will not move out of the third insertion hole 710 and fourth insertion hole 610.

[0060] In this embodiment, by setting the first pin 800 and the U-shaped pin 900, the purpose of facilitating the disassembly and installation of the support rod 600 is achieved.

[0061] like Figure 5 As shown, in this embodiment, one end of the support rod 600 is provided with a plurality of fourth insertion holes 610. When the support rod 600 is in a supported state, the height of the support rod 600 can be adjusted by corresponding different fourth insertion holes 610 with the third insertion holes 710.

[0062] like Figure 3 , 5 As shown, in this embodiment, the first end of the support rod 600 is provided with a plurality of fourth insertion holes 610, and the second end is provided with at least one fourth insertion hole 610.

[0063] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0064] 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 it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A wheel adjustment mechanism, comprising a mounting frame and a wheel disposed on the mounting frame and rotatably connected to the mounting frame, characterized in that, The first end of the mounting frame is hinged to the machine body, so that the second end of the mounting frame can swing back and forth between the folded position and the unfolded position around its own hinge center line, and the traveling wheel is provided at the second end of the mounting frame; The wheel adjustment mechanism further includes a locking component, which has an unlocked state and a locked state that can be switched between each other. When the locking component is in the locked state, it locks the mounting bracket to the unfolded position or the folded position. When the locking component is in the unlocked position, it releases the lock on the mounting bracket, allowing the mounting bracket to swing back and forth between the unfolded position and the folded position.

2. The wheel adjustment mechanism according to claim 1, characterized in that, The locking assembly includes a locking element. The mounting bracket is provided with a first socket, and the body is provided with a corresponding second socket. At least one of the first socket and the second socket is provided in two. When locking, the locking element is inserted into the corresponding first socket and the second socket.

3. The walking wheel adjustment mechanism according to claim 2, characterized in that, The first socket has two holes and the second socket has one hole. When the mounting bracket is in the unfolded position, one of the first sockets corresponds to the second socket. When the mounting bracket is in the folded position, the other first socket corresponds to the second socket.

4. The wheel adjustment mechanism according to claim 3, characterized in that, A sliding groove is provided between the two first sockets. The sliding groove is arc-shaped, and the center line of the sliding groove coincides with the hinge center line of the mounting bracket. The width of the sliding groove is smaller than the inner diameter of the first socket. The sliding groove is connected to the two first sockets. The locking element has a recessed portion and a locking portion, wherein the outer diameter of the recessed portion is adapted to the width of the slide groove, and the outer diameter of the locking portion is adapted to the inner diameter of the first socket. The locking element is slidably connected to the body so that the locking element has a lock position and an unlock position that can be switched between each other. When the locking element is in the lock position, the locking portion corresponds to the first socket. When the locking element is in the unlock position, the recessed portion corresponds to the first socket.

5. The wheel adjustment mechanism according to claim 4, characterized in that, The locking assembly further includes an elastic element, the two ends of which are connected to the locking element and the mounting bracket, respectively. In its natural state, the elastic element applies a spring force to the locking element, causing the locking element to tend to move from the unlocked position to the locked position.

6. A mini tiller, comprising a body, tillage blades disposed on the body, and a drive device for driving the tillage blades to rotate, characterized in that, It also includes the wheel adjustment mechanism as described in any one of claims 1-5.

7. The micro-tiller according to claim 6, characterized in that, It also includes a support rod, which has a supported state and a non-supported state. When the support rod is in the supported state, one end of the support rod is connected to the machine body and the other end extends downward. When the support rod is in the non-supported state, one end of the support rod is connected to the machine body and the other end extends upward.

8. The micro-tiller according to claim 7, characterized in that, The support rod is V-shaped so that when the support rod is in the supported state, the lower end of the support rod tilts towards the rear of the tiller.

9. The micro-tiller according to claim 7 or 8, characterized in that, Also includes: A first pin is provided, wherein a sleeve is provided on the body, the sleeve is provided with a third insertion hole, and the end of the support rod is provided with a fourth insertion hole, and the first pin is movably inserted into the corresponding third and fourth insertion holes; and A U-shaped pin is inserted at the end of the first pin so that the first pin will not move out of the third and fourth sockets.

10. The micro-tiller according to claim 9, characterized in that, One end of the support rod is provided with multiple fourth insertion holes.

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