Rotary cultivator middle plough with safety function
By setting shaft pins and protective plates with different strengths on the plow in the rotary tiller, the problem of damage to the transmission box caused by the break of the mid-plow is solved, and the protection of the transmission box and the efficiency of the tilling are improved.
Patent Information
- Application Number
- CN202422427728.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-09
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-10-09
AI Technical Summary
The existing rotary tillers are prone to break when tilling hard land or encountering tree roots, resulting in damage to the transmission box and unable to effectively protect the transmission box.
A rotary tiller with a safety effect is designed. By setting two connecting holes and vias on the connecting plate, the shaft pins with different strengths are connected to the plow. When encountering obstacles, the shaft pins of the low-strength are broken. The plow rotates with the retained shaft pin as the rotation axis to protect the transmission box; and is equipped with a protective plate to block debris to reduce damage to the transmission box.
Effectively protect the transmission box and the middle plow, avoid damage to the transmission box, improve the tillage efficiency, and reduce equipment maintenance costs.
Smart Images
Figure CN223110457U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of agricultural machinery, and specifically relates to a middle plow of a rotary tiller with an insurance function. Background Technique
[0002] A rotary tiller is an agricultural machine mainly used for tilling farmland and soil treatment. It breaks up the soil, mixes fertilizers and weeds through rotating blades or plows, and improves the soil structure, creating favorable conditions for subsequent sowing and crop growth.
[0003] Currently, in order to improve the tilling efficiency, the number of working parts of the rotary tiller is increased to a certain extent. However, the problem is that the transmission box is relatively large, and the rotary tilling teeth cannot be connected to the transmission box. As a result, when rotary tilling, the land under the transmission box cannot be tilled, forming ridges. The current solution is to install a middle plow at the front end of the transmission box to "plow" the ridges. However, when tilling the land, tree roots or stones in hard soil may be encountered, and there is a risk that the middle plow breaks or the transmission box is torn due to excessive force even if the middle plow does not break. Content of the Utility Model
[0004] In order to overcome the problems in the background technique, the utility model provides a middle plow of a rotary tiller with an insurance function.
[0005] To achieve the above purpose, the utility model is realized through the following technical scheme: A middle plow of a rotary tiller with an insurance function includes a connecting plate for connecting the transmission box of the rotary tiller and the middle plow. Two connecting holes are provided on the connecting plate; two through holes adapted to the hole positions of the connecting holes are provided on the middle plow; the middle plow is installed on the connecting plate through two shaft pins passing through the through holes and the connecting holes, and the strength of one of the shaft pins is low.
[0006] Further, the middle plow includes a bottom plate, a plow board and a plow head; the plow board is installed on the bottom plate, the plow head is located at the front end of the plow board, and the through holes are opened on the bottom plate.
[0007] Further, a protective plate is also provided on the connecting plate, and the protective plate can block sundries such as tree roots and weeds rolled up by the middle plow during the tilling operation.
[0008] Further, the protective plate is triangular in shape and is vertically installed on the connecting plate.
[0009] Further, the connecting plate and the protective plate are integrally formed.
[0010] Further, the connection mode of the plow head with the bottom plate and the plow board is welding. If the plow head is severely worn, it can be directly disassembled and replaced.
[0011] Further, the plow head is triangular.
[0012] Furthermore, one of the pivot pins connecting the middle plow and the connecting plate is close to the plow board and has high strength.
[0013] Advantages of the present utility model: When the middle plow of the present utility model encounters a hard obstacle, the pivot pin far from the plow board will break due to its lower strength, while the one close to the plow board remains connected due to its higher strength. At this time, the middle plow can rotate around the remaining pivot pin, thereby cutting off the force on the middle plow and playing a role in protecting the transmission box and the middle plow; the setting of the protective plate can block the knocking of tree roots, weeds and other sundries on the transmission box during part of the tillage process, and can protect the transmission box to a certain extent. Description of the Drawings
[0014] Figure 1 is a schematic structural diagram of the present utility model;
[0015] Figure 2 is the present utility model Figure 1 an enlarged schematic diagram at A;
[0016] Figure 3 is a schematic structural diagram of the safety device in the present utility model;
[0017] Figure 4 is the present utility model Figure 1 a schematic structural diagram of 2 in the present utility model.
[0018] In the figure: 1, transmission box; 2, middle plow; 21, bottom plate; 22, plow board; 23, plow head; 3, connecting plate; 4, through hole; 5, connecting hole; 6, protective plate. Detailed Embodiments
[0019] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the preferred embodiments of the present utility model will be described in detail below to facilitate understanding by those skilled in the art. Embodiment
[0020] Please refer to Figures 1 to 4 : A middle plow 2 of a rotary tiller with a safety function, including a connecting plate 3 for connecting the transmission box 1 of the rotary tiller and the middle plow 2, and two connecting holes 5 are provided on the connecting plate 3; two through holes 4 adapted to the hole positions of the connecting holes 5 are provided on the middle plow 2; the middle plow 2 is installed on the connecting plate 3 through two pivot pins passing through the through holes 4 and the connecting holes 5, and the strength of one of the pivot pins is low. This pivot pin with low strength breaks when the force on the middle plow 2 is too large, so that the middle plow 2 can rotate around the remaining pivot pin, and at this time the middle plow 2 will no longer be stressed due to tilling, protecting the middle plow 2 and the transmission box of the rotary tiller.
[0021] In one embodiment, referring to the attached Figures 2 to 4, the middle plow 2 includes a bottom plate 21, a plow board 22 and a plow head 23; the plow board 22 is installed on the bottom plate 21, the plow head 23 is located at the front end of the plow board 22, and a through hole 4 is opened on the bottom plate 21.
[0022] In one embodiment, referring to the attached Figures 1 to 2 , a protective plate 6 is further provided on the connecting plate 3. The protective plate 6 can block sundries such as tree roots and weeds rolled up by the middle plow 2 during the tillage operation, and can reduce the damage of these sundries to the transmission case.
[0023] In one embodiment, referring to the attached Figures 1 to 4 , the protective plate 6 is triangular in shape and is vertically installed on the connecting plate 3.
[0024] In one embodiment, referring to the attached Figures 1 to 4 , the connecting plate 3 and the protective plate 6 are integrally formed.
[0025] In one embodiment, referring to the attached Figures 1 to 4 , the connection mode of the plow head 23 with the bottom plate 21 and the plow board 22 is welding. If the plow head 23 is severely worn, it can be directly knocked out and a new plow head 23 can be welded on.
[0026] In one embodiment, referring to the attached Figures 1 to 4 , the plow head 23 is triangular.
[0027] In one embodiment, referring to the attached Figures 1 to 4 , one of the pivot pins connecting the middle plow 2 and the connecting plate 3 close to the plow board 22 has high strength.
[0028] The working principle of the present utility model: When the middle plow 2 encounters excessive resistance during work, such as hitting hard obstacles such as stones and tree roots, or when the soil is too hard, the acting force it bears will increase rapidly. When the force exceeds a certain limit, the pivot pin far from the plow board 22 will break due to lower strength, and the middle plow 2 can rotate with the remaining pivot pin as the rotation axis, playing a role in protecting the transmission case and the middle plow.
[0029] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit. Although the present utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present utility model.
Claims
1. A plow in a rotary tiller with an insurance function, characterized in that, It includes a connecting plate (3) for connecting the transmission box (1) of the rotary tiller and the middle plow (2). Two connecting holes (5) are provided on the connecting plate (3); two through holes (4) adapted to the hole positions of the connecting holes (5) are provided on the middle plow (2); the middle plow (2) is installed on the connecting plate (3) by passing two shaft pins through the through holes (4) and the connecting holes (5), and the strength of one of the shaft pins is low.
2. The plow in a rotary tiller with an insurance function according to claim 1, characterized in that: The middle plow (2) includes a bottom plate (21), a plow plate (22) and a plow head (23); the plow plate (22) is installed on the bottom plate (21), the plow head (23) is located at the front end of the plow plate (22), and the through hole (4) is opened on the bottom plate (21).
3. The plow in the rotary tiller with an insurance function according to claim 2, characterized in that: The connection mode of the plow head (23) with the bottom plate (21) and the plow plate (22) is welding.
4. The plow in a rotary tiller with an insurance function according to claim 3, characterized in that: The plow head (23) is triangular.
5. The plow in a rotary tiller with an insurance function according to claim 1, characterized in that: A protective plate (6) is further provided on the connecting plate (3).
6. The plow in a rotary tiller with an insurance function according to claim 5, characterized in that: The protective plate (6) is triangular in shape and is vertically installed on the connecting plate (3).
7. The plow in a rotary tiller with an insurance function according to claim 5, characterized in that: The connecting plate (3) and the protective plate (6) are integrally formed.
8. The plow in a rotary tiller with an insurance function according to claim 1, characterized in that: One of the shaft pins connecting the middle plow (2) and the connecting plate (3) that is close to the plow plate (22) has a high strength.