Resistance adjusting mechanism of mini-tiller

Abstract

The utility model relates to the technical field of mini-tillers, in particular to a mini-tiller resistance adjusting mechanism which comprises a resistance rod and a limiting block, a plurality of limiting holes are formed in the resistance rod in the length direction of the resistance rod, an adjusting assembly is arranged in the limiting block, the adjusting assembly comprises a limiting protruding block capable of sliding along a sliding groove, and the limiting protruding block is arranged in the limiting hole. The lower portion of the control rod is fixedly connected with the limiting protruding block, the control rod is located in the adjusting hole and can move in the radial direction of the adjusting hole, and a reset spring is arranged between the bottom wall of the sliding groove and the lower portion of the control rod. According to the resistance adjusting mechanism of the mini-tiller, the tilling depth of the resistance rod of the mini-tiller can be simply and rapidly adjusted, and the effect of fixing the resistance rod is more stable. The mechanism is simple in structure, reasonable in design and convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of micro-tillers, in particular to a resistance adjusting mechanism for a micro-tiller. Background Art

[0002] A micro-tiller is an agricultural implement used for tilling farmland, mainly powered by a diesel engine or a gasoline engine. It is deeply loved by users because of its small size, simple structure, easy operation and other characteristics. When the micro-tiller in the prior art is tilling, if it is necessary to adjust the tilling depth, it is often necessary to adjust the depth of the resistance rod. However, in the prior art, the resistance rod is mainly fixed to the connecting frame by bolts. When adjusting, it is also necessary to loosen the nut, then adjust to an appropriate position, and finally install the nut and tighten the bolt; and since the connecting frame and the resistance rod are connected only by one connection point of the bolt, the resistance rod will shake on the connecting frame and is very unstable.

[0003] The above method has the disadvantages of inconvenient adjustment, time-consuming and laborious, and the resistance rod fixed by bolts is easy to shake on the connecting frame. Summary of the Utility Model

[0004] Aiming at the above defects, the utility model discloses a resistance adjusting mechanism for a micro-tiller, which mainly solves the technical problems that it is inconvenient to adjust the depth of the resistance rod of the micro-tiller in the prior art and the resistance rod is easy to shake on the connecting frame.

[0005] To achieve the above object, the utility model discloses a resistance adjusting mechanism for a micro-tiller, including a resistance rod and a limiting block. A plurality of limiting holes are arranged along the length direction of the resistance rod. A vertical mounting hole is formed in the limiting block. Vertical adjusting holes are formed on both sides of the mounting hole in the limiting block. Sliding grooves are arranged on two side walls of the mounting hole opposite to each other, and the sliding grooves are communicated with the adjusting holes; a set of adjusting components are arranged in the sliding grooves and the adjusting holes on each side of the mounting hole. The adjusting component includes a limiting convex block that can slide along the sliding groove, and a control rod fixedly connected to the lower part of the limiting convex block. The control rod is located in the adjusting hole and can move radially along the adjusting hole. A return spring is arranged between the bottom wall of the sliding groove and the lower part of the control rod.

[0006] Compared with the prior art, the beneficial effects of this solution are as follows: An installation hole is provided on the limit block in this solution. The resistance rod can move up and down in the installation hole. A number of limit holes are provided on the resistance rod, and sliding grooves are also provided on two opposite side walls of the installation hole. The adjustment component arranged in the limit block can firmly clamp the resistance rod in the limit block. Specifically, it is achieved through the limit convex block of the adjustment component. One side of the control rod in the adjustment component is connected to the return spring, and the other side is connected to the limit convex block. Push the control rod to compress the return spring, so that the limit convex block can retract into the sliding groove. Then place the resistance rod into the installation hole, and then release the control rod. The return spring resets and presses the limit convex block into the limit hole, and the clamping of the resistance rod can be completed. If you want to adjust the depth of the resistance rod, repeat the above steps and then select a suitable limit hole to engage with the limit convex block. In addition, since the resistance rod is in the installation hole of the limit block, after the resistance rod is clamped to the limit block, the contact area between the two is larger. In this way, the resistance rod is not easy to shake after being clamped to the limit block and is more stable.

[0007] Preferably, the limit block is in a cuboid shape, and the installation hole is provided at the center of the top surface of the limit block.

[0008] Beneficial effects: The limit block is set in a cuboid shape, and the installation hole is provided at the center of the top surface of the limit block. In this way, the contact area between the limit block and the resistance rod in the length direction will be larger, and the resistance rod is clamped at the center position of the limit hole, which can make the resistance rod more stable.

[0009] Preferably, the number of return springs of the adjustment component is at least two.

[0010] Beneficial effects: Two return springs are provided in this solution. In this way, the force generated when the return spring resets will be greater. The return spring can press the control rod against the inner wall of the limit block. At this time, the control rod is not easy to loosen, and the limit convex block becomes more stable on the limit hole and will not slide easily.

[0011] Preferably, the control rod includes a control grip and a connecting plate. The control grip passes through the adjustment hole and is provided on the surface of the limit block. One side of the connecting plate is connected to the return spring, and the other side is connected to the control rod.

[0012] Beneficial effects: There is a control grip at the top of the control rod, which can make it more convenient to push the control rod. The bottom is set as a connecting plate to facilitate the connection between the limit convex block and the return spring.

[0013] Preferably, after the resistance rod is clamped to the limit block, the control grip is placed in the limit hole on the resistance rod, and its top surface abuts against the upper wall of the limit hole.

[0014] Beneficial effects: The control grip of this solution can be placed into another limiting hole, and the top surface of the control grip can be in contact with the upper wall of the limiting hole. In this way, on the one hand, it can prevent the control grip from being exposed outside, effectively protecting the control grip; on the other hand, after the top surface of the control grip is in contact with the upper wall of the limiting hole, it can further assist in limiting the resistance rod in the vertical direction. Brief Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic structural diagram of the resistance adjustment mechanism of the micro-tiller of the present invention;

[0017] Figure 2 It is an expanded schematic structural diagram of the resistance adjustment mechanism of the micro-tiller of the present invention;

[0018] Figure 3 It is a schematic structural diagram of the limiter of the resistance adjustment mechanism of the micro-tiller of the present invention;

[0019] Figure 4 It is a partial schematic diagram of the expanded limit block;

[0020] Figure 5 It is a cross-sectional schematic diagram of the limit block of the resistance adjustment mechanism of the micro-tiller of the present invention;

[0021] Figure 6 It is a schematic structural diagram of the limit block in another embodiment.

[0022] Main reference numeral descriptions: 1. Resistance rod; 11. Limiting hole; 2. Limit block; 21. Control rod; 211. Control grip; 212. Connecting plate; 22. Return spring; 23. Limiting convex block; 24. Adjusting hole; 25. Sliding groove. Detailed Description of the Embodiment

[0023] The following will describe in detail the embodiments of the present invention. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are intended to explain the embodiments of the present invention, and should not be construed as a limitation to the present invention.

[0024] In the description of the embodiments of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present utility model.

[0025] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the embodiments of the present utility model, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0026] As an embodiment of the utility model:

[0027] Refer to Figure 1 , the resistance adjustment mechanism of the micro-tiller in this embodiment mainly includes two parts, a resistance rod 1 and a limit block 2.

[0028] Refer to Figure 1 and Figure 2 , the resistance rod 1 is a cuboid, which is inserted into the inside of the limit block 2. A number of identical limit holes 11 are evenly spaced on the resistance rod 1.

[0029] Refer to Figure 2 — Figure 5 , at the center position of the top surface of the limit block 22, there is an installation hole, the size of the installation hole is adapted to the size of the resistance rod 1, and the resistance rod 1 can slide up and down and be fixed in the installation hole. On both sides of the installation hole, there are two adjustment holes 24 symmetrically arranged, and a chute 25 is also arranged on the side wall of the installation hole.

[0030] There are two sets of adjusting components arranged inside the limiting block 2, which are symmetrically arranged inside the limiting block 2 along the mounting holes respectively. The function of the adjusting component is to fix the resistance rod 1 on the limiting block 2. The adjusting component includes a limiting convex block 23 that can slide along the sliding groove 25, a control rod 21 fixedly connected to the limiting convex block 23, and a return spring 22 arranged at the bottom wall of the sliding groove 25 and connected to the control rod 21. The limiting convex block 23 can slide in the sliding groove 25, and the control rod 21 can move in the adjusting hole 24. The top end of the control rod 21 passes through the adjusting hole 24 and is arranged on the top surface of the limiting block 2. The top end of the control rod 21 is a control grip 211, whose function is to facilitate the user to push the control rod 21; the bottom end of the control rod 21 is a connecting plate 212. The upper part of the connecting plate 212 is inside the adjusting hole 24, and the lower part is inside the sliding groove 25. One side of the lower part is connected to the return spring 22, and the other side is fixedly connected to the limiting convex block 23. Therefore, pushing the control rod 21 to compress the return spring 22 can make the limiting convex block 23 move in the sliding groove 25.

[0031] When the adjusting component is at rest, the return spring 22 is also in a compressed state. One end of the return spring 22 is connected to the bottom wall of the sliding groove 25, and the other end is connected to the connecting plate 212 of the control rod 21. The return spring 22 presses the connecting plate 212. At this time, the limiting convex block 23 protrudes from the sliding groove 25; if the control grip 211 is pushed to compress the return spring 22, the limiting convex block 23 can then retract into the sliding groove 25. And at least two return springs 22 need to be set. In this way, the force generated when the return spring 22 resets will be greater, and the control rod 21 can be firmly pressed against the inner wall of the limiting block 2. The control rod 21 is not easy to loosen at this time. This means that the clamping connection between the limiting convex block 23 and the limiting hole 11 becomes more stable and will not slide easily. In addition, since the resistance rod 1 is inside the mounting hole of the limiting block 2, after the resistance rod 1 is clamped with the limiting block 2, the contact area between the two is larger. In this way, the resistance rod 1 is not easy to shake after being clamped in the limiting block 2 and will be more stable.

[0032] In addition, referring to Figure 6 , the size of the control grip 211 of the control rod 21 can be customized. When the resistance rod 1 is clamped in the limiting block 2, the control grip 211 can be placed into another limiting hole 11 of the resistance rod 1, and the top surface of the control grip 211 can be in contact with the upper wall of the limiting hole 11. The advantages of such a setting are: one is that it can prevent the control grip 211 from being exposed outside and effectively protect the control grip 211; the other is that after the top surface of the control grip 211 is in contact with the upper wall of the limiting hole 11, it can further assist in limiting the resistance rod 1 in the vertical direction and strengthen the stability of the resistance rod 1.

[0033] Regarding the usage method and working principle of this mechanism: When the limit block 2 is at rest, the limit convex block 23 is pushed out of the sliding groove 25 by the return spring 22 and protrudes on the side wall of the mounting hole. At this time, the control grip 211 of the control rod 21 can be pushed to compress the return spring 22, and the limit convex block 23 will contract into the sliding groove 25. Then, the resistance rod 1 can be inserted into the mounting hole. After aligning the limit hole 11 with the limit convex block 23, the control grip 211 is released, and the limit convex block 23 is engaged with the limit hole 11. In this way, the limit convex block 23 can engage the resistance rod 1 in the mounting hole of the limit block 2. If it is necessary to adjust the tillage depth of the resistance rod 1, select the appropriate limit hole 11 on the resistance rod 1 and engage it with the limit convex block 23 according to the above method.

[0034] In summary, a resistance adjustment mechanism for a micro-tiller disclosed in this application can simply and quickly adjust the tillage depth of the resistance rod of the micro-tiller, and the effect of fixing the resistance rod is more stable. This mechanism has a simple structure, reasonable design, and convenient use.

[0035] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A resistance adjustment mechanism for a micro-tillage machine, comprising a resistance rod (1) and a limit block (2), characterized in that: The resistance rod (1) is provided with a plurality of limit holes (11) along its length direction, the limit block (2) is provided with a vertical mounting hole, the limit block (2) is provided with vertical adjustment holes (24) on two opposite sides of the mounting hole, and a slide groove (25) is provided on two opposite side walls of the mounting hole, and the slide groove (25) is connected with the adjustment hole (24); a group of adjustment components are provided in the slide groove (25) and the adjustment hole (24) on each side of the mounting hole, and the adjustment component includes a limit protrusion (23) that can slide along the slide groove (25), and a control rod (21) fixedly connected to the limit protrusion (23) at the bottom, the control rod (21) is located in the adjustment hole (24) and can move radially along the adjustment hole (24), and a return spring (22) is provided between the bottom wall of the slide groove (25) and the lower part of the control rod (21).

2. The resistance adjustment mechanism of the micro-tillage machine according to claim 1, characterized in that: The limiting block (2) is in the shape of a rectangular parallelepiped, and the mounting hole is arranged at the center position of the top surface of the limiting block (2).

3. The resistance adjustment mechanism of the micro-tillage machine according to claim 1, characterized in that: The number of the return springs (22) of the adjustment assembly is at least two.

4. The resistance adjustment mechanism of the micro-tillage machine according to claim 1, characterized in that: The control rod (21) comprises a control handle (211) and a connecting plate (212); the control handle (211) passes through an adjustment hole (24) and is arranged on the surface of the limit block (2); one side of the connecting plate (212) is connected to a return spring (22), and the other side is connected to the control rod (21).

5. The resistance adjustment mechanism of the micro-tillage machine according to claim 4, characterized in that: After the resistance rod (1) is clamped on the limiting block (2), the control handle (211) can be placed in the limiting hole (11) on the resistance rod (1), and its top surface abuts against the upper wall of the limiting hole (11).

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