Trailing structure of mini-tiller

Abstract

The utility model discloses a mini-tiller towing structure which comprises a connecting body which is integrally in a long strip shape, a plurality of bolt holes used for being connected with a gearbox are formed in the front end of the connecting body along the edge, a hanging body is welded to the rear end of the connecting body, and a hanging groove which is transversely formed in a penetrating mode is formed in the side, away from the connecting body, of the hanging body. The mounting structure further comprises a rear cross beam used for mounting a fender, the rear cross beam is horizontally arranged above the connecting body and the hanging body, and the middle of the rear cross beam is welded to the connecting body or the hanging body. The rear cross beam is provided with mounting holes which are vertically arranged in a penetrating mode, and the mounting holes are distributed in the two ends of the rear cross beam. The utility model has the advantages of simple and reasonable structure, low assembly difficulty, good consistency and the like, and is favorable for improving the assembly quality.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural equipment technical field, especially a kind of micro tiller towed structure. BACKGROUND

[0002] Micro tiller is a kind of agricultural machinery widely used in mountainous land and other farmland, which is small in size and flexible in use, and is widely welcomed. Micro tiller usually includes a main machine for providing power and a working accessory detachably connected to the main machine. In order to facilitate the connection of the working accessory, a towed body is usually provided at the rear end of the main machine, and the working accessory is detachably connected to the towed body. In addition, since the micro tiller works in the farmland, it will stir up the soil during the travel process, and it is necessary to provide a fender on the two wheels. The front and rear ends of the fender are respectively erected on the main machine through the front cross beam and the rear cross beam. Usually, a connecting plate is provided on the towed body, and at least two strip-shaped holes extending in the front-rear direction are provided on the connecting plate. The middle part of the rear cross beam is installed on the strip-shaped hole through a bolt. Due to the small installation space, the installation of the bolt is difficult, and the assembly difficulty is large. During the actual assembly process, the bolt is prone to deflection, which causes the rear cross beam to be skewed, affecting the subsequent assembly and appearance consistency of the fender. At the same time, the deflected bolt is prone to loosening due to mechanical vibration during long-term use, which affects the quality of the product. SUMMARY

[0003] In view of the above problems of the prior art, the technical problem to be solved by the utility model is to provide a micro tiller towed structure which is simple and reasonable in structure, low in assembly difficulty, good in consistency and beneficial to improve the assembly quality.

[0004] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0005] A micro tiller towed structure includes a connecting body in the shape of a long strip. A plurality of bolt holes for connecting a gearbox are arranged along the edge of the front end of the connecting body, and a hitching body is welded at the rear end. The hitching body has a hitching groove arranged transversely on the side away from the connecting body. It also includes a rear cross beam for installing a fender. The rear cross beam is horizontally arranged above the connecting body and the hitching body, and the middle part is welded on the connecting body or the hitching body. The rear cross beam has a mounting hole arranged vertically therethrough, and the mounting hole is distributed at both ends of the rear cross beam.

[0006] In the above structure, the rear cross beam is welded on the connecting body or the hitching body, so that the relationship between the rear cross beam and the connecting body is determined before assembly, thereby reducing the subsequent screw assembly process, which can not only ensure the assembly quality, but also reduce the assembly difficulty. At the same time, welding the rear cross beam on the connecting body or the hitching body also avoids the problem that the subsequent screw loosening affects the quality.

[0007] Furthermore, the mounting body is integrally formed by bending into a U-shape, and has vertically through hinge holes on both the upper and lower sides, with the hinge holes located in the middle of the mounting body.

[0008] Furthermore, the mounting body has a reinforcing ring coaxially arranged with the hinge hole. The reinforcing ring is welded to the mounting body and located on the side of the mounting body opposite to the mounting groove.

[0009] By welding reinforcing rings onto the hinge holes, the strength of the hinge can be increased, and the service life of the hanger can be extended.

[0010] Furthermore, the reinforcing ring has a coaxially protruding positioning ring on the side facing the hanger, the outer diameter of the positioning ring matching the inner diameter of the hinge hole and fitting onto the hinge hole.

[0011] In this way, the positioning ring allows the reinforcing ring to more easily form a coaxial relationship with the hinge hole, avoiding displacement during welding and thus helping to ensure welding quality.

[0012] Furthermore, the connecting body includes two parallel, facing, and vertically arranged connecting plates, with a reinforcing rib connecting the two connecting plates, and the distance between them matches the thickness of the connecting protrusion on the gearbox; the bolt hole coaxially passes through the two connecting plates.

[0013] In this way, by having the two connecting plates cooperate with the connecting protrusions on the gearbox, the connection force is distributed on both sides of the connecting protrusions, which makes the connection more reliable.

[0014] Furthermore, the rear crossbeam includes a horizontally arranged horizontal plate and a vertically arranged vertical plate, the vertical plate being connected to one side of the horizontal plate and extending along the length of the horizontal plate; the mounting hole is provided on the horizontal plate.

[0015] Furthermore, the lower end of the upright plate has two limiting grooves corresponding to the connecting plate, and the width of the limiting grooves matches the thickness of the connecting plate; the upright plate is snapped onto the connecting plate through the limiting grooves and welded together.

[0016] In this way, the welding position of the rear crossbeam can be quickly determined by the limiting groove on the upright plate, thereby ensuring product consistency.

[0017] Furthermore, the side of the upright plate facing the hanging body is fitted to the hanging body and welded together.

[0018] In this way, the upright plate is welded to both the connecting body and the hanger simultaneously, thereby increasing the strength of the rear crossbeam and ensuring product quality.

[0019] Furthermore, the two connecting plates and the stiffening plate are integrally bent and formed, and the stiffening plate is located below the connecting plates.

[0020] Furthermore, the mounting hole is a strip-shaped hole provided along the length direction of the rear crossbeam.

[0021] In summary, this utility model has the advantages of simple and reasonable structure, low assembly difficulty, good consistency, and is conducive to improving assembly quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this embodiment.

[0023] Figure 2 for Figure 1 A schematic diagram of its decomposed structure.

[0024] Figure 3 This is a structural diagram of the mounting components.

[0025] Figure 4 A schematic diagram of the reinforcing ring structure.

[0026] Figure 5 This is a structural schematic diagram of the rear crossbeam.

[0027] Figure 6 This is a structural diagram of the connector and the hanger. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to an embodiment of a trailer assembly.

[0029] In practical implementation: such as Figure 1 and Figure 2 As shown, a trailer assembly includes a trailer body and a mini-tiller attachment assembly. The trailer body includes a generally elongated connecting body 1. The front end of the connecting body 1 has multiple bolt holes along its edge for connecting to a gearbox, and the rear end is welded to an attachment body 2. The attachment body 2 has a horizontally through-hole 21 on the side opposite to the connecting body 1. In this embodiment, the attachment body 2 is integrally formed in a U-shape and has vertically through-holes 22 on both its upper and lower sides, with the hinge holes 22 located in the middle of the attachment body 2. It also includes a rear crossbeam 3 for mounting mudguards. The rear crossbeam 3 is horizontally positioned above the connecting body 1 and the attachment body 2, and its middle portion is welded to the connecting body 1 and the attachment body 2. The rear crossbeam 3 has vertically through-hole mounting holes distributed at both ends of the rear crossbeam 3. Specifically, the mounting holes are strip-shaped holes arranged along the length of the rear crossbeam 3.

[0030] The micro-tiller attachment assembly includes an attachment arm 4, one end of which is used to connect to a working attachment, and the other end has a hinged sleeve 5. Symmetrically arranged on both sides of the attachment arm 4 are outwardly extending limiting plates 6. The end of the limiting plate 6 away from the attachment arm 4 is bent towards the hinged sleeve 5 to form a top connection portion. The side of the top connection portion is parallel to the hinged sleeve 5. The hinged sleeve 5 is located between the two limiting plates 6, and its axis is located on the symmetrical center plane of the two limiting plates 6. The hinged sleeve 5 is coaxially arranged between the two hinge holes 22 and connected to the attachment groove 21 through a hinge pin passing through the hinge holes 22. There is a swing gap between the top connection portion of the limiting plate 6 and the bottom of the attachment groove 21. The swing gap ensures that the attachment arm can deflect within a certain range, but the amplitude of deflection is limited.

[0031] In this embodiment, the two limiting plates 6 are integrally formed by V-shaped bending. The hinge sleeve 5 is tangentially disposed to the two limiting plates 6 and welded together. The side of the bent edge of the two limiting plates 6 facing away from the hinge sleeve 5 is welded to the hanging arm 4. To enable more precise welding between the limiting plates 6 and the hanging arm 4, the bent edges of the two limiting plates 6 have positioning holes perpendicularly penetrating along the symmetry center plane. The hanging arm 4 has protruding positioning posts, which are inserted into the positioning holes and welded together. The cross-sections of the positioning holes and positioning posts are rectangular. The cooperation of the positioning posts and positioning holes ensures a reliable relative position before welding, which is beneficial for ensuring welding quality and dimensional consistency. In specific implementations, the connecting arm 4, hinge sleeve 5, and limiting plates 6 can also be integrally cast.

[0032] The two limiting plates are formed by bending them as a whole, and the limiting plates are welded to the hinge sleeve and the hanging arm. This ensures the strength of the three components. At the same time, the fixed limiting plates can maintain shape stability during long-term use, thereby reducing the change in swing gap and thus reliably controlling the swing amplitude.

[0033] In this embodiment, the mounting body 2 has a reinforcing ring 23 coaxially arranged with the hinge hole 22. The reinforcing ring 23 is welded to the mounting body 2 and located on the side of the mounting body 2 opposite to the mounting groove 21. By welding the reinforcing ring to the hinge hole, the strength of the hinge can be improved and the service life of the mounting body can be extended.

[0034] To ensure coaxial welding between the reinforcing ring and the hinge hole, the reinforcing ring 23 has a coaxially protruding positioning ring 24 on the side facing the hanger 2. The outer diameter of the positioning ring 24 matches the inner diameter of the hinge hole 22 and fits onto the hinge hole 22. The positioning ring allows the reinforcing ring to more easily form a coaxial relationship with the hinge hole, preventing displacement during welding and thus helping to ensure welding quality.

[0035] The connecting body 1 includes two parallel, facing, and vertically arranged connecting plates 11. A reinforcing rib 12 connects the two connecting plates 11, and the distance between them matches the thickness of the connecting protrusion on the gearbox. In this embodiment, the two connecting plates 11 and the reinforcing rib 12 are integrally bent, and the reinforcing rib 12 is located below the connecting plates 11. The bolt holes coaxially penetrate the two connecting plates 11. By cooperating with the connecting protrusion on the gearbox, the connection force is distributed on both sides of the connecting protrusion, making the connection more reliable.

[0036] The rear crossbeam 3 includes a horizontally arranged horizontal plate 31 and a vertically arranged vertical plate 32. The vertical plate 32 is connected to one side of the horizontal plate 31 and extends along the length of the horizontal plate 31. The mounting holes are provided on the horizontal plate 31. The lower end of the vertical plate 31 has two limiting grooves 33 corresponding to the connecting plate 11. The width of the limiting grooves 33 matches the thickness of the connecting plate 11. The vertical plate 31 is engaged with the connecting plate 11 through the limiting grooves 33 and then welded together. The welding position of the rear crossbeam can be quickly determined through the limiting grooves on the vertical plate, thereby ensuring product consistency.

[0037] To improve the strength of the rear crossbeam, the upright plate 31 is fitted and welded to the hanger 2 on the side facing it. In this embodiment, the rear crossbeam is horizontally welded to the connector and the hanger, thus determining the relationship between the rear crossbeam and the connector before assembly. This reduces the need for subsequent screw assembly, ensuring assembly quality and reducing assembly difficulty. Furthermore, welding the rear crossbeam to the connector or hanger also prevents loose screws from affecting quality.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A micro tiller trailer structure, characterized in that, The connecting body (1) is long strip-shaped as a whole, the front end of the connecting body (1) is provided with a plurality of bolt holes for connecting a gearbox along the edge, and the rear end is welded with a hanging body (2), the side of the hanging body (2) away from the connecting body (1) is provided with a hanging groove (21) transversely arranged; the rear cross beam (3) for mounting a fender is further arranged, the rear cross beam (3) is arranged horizontally above the connecting body (1) and the hanging body (2), and the middle part is welded on the connecting body (1) or the hanging body (2); the rear cross beam (3) is provided with a mounting hole arranged vertically, and the mounting hole is arranged at both ends of the rear cross beam (3) in a distributed manner.

2. The micro tiller trailer structure of claim 1, wherein, The hanging body (2) is integrally bent into a U shape, and the upper and lower sides are provided with hinge holes (22) arranged vertically, the hinge holes (22) are located in the middle part of the hanging body (2).

3. The micro tiller trailer structure of claim 2, wherein, The hanging body (2) is provided with a reinforcing ring (23) coaxially arranged with the hinge hole (22), the reinforcing ring (23) is welded on the hanging body (2) and located on the side of the hanging body (2) away from the hanging groove (21).

4. The micro tiller trailer structure of claim 3, wherein, The side of the reinforcing ring (23) towards the hanging body (2) is provided with a positioning ring (24) coaxially protruding, the outer diameter of the positioning ring (24) matches the inner diameter of the hinge hole (22), and the positioning ring (24) is fitted on the hinge hole (22).

5. The micro tiller trailer structure of claim 1, wherein, The connecting body (1) comprises two connecting plates (11) arranged in parallel and vertically, and a rib plate (12) connected between the two connecting plates (11), and the distance between the two connecting plates (11) matches the thickness of the connecting convex rib on the gearbox; the bolt hole coaxially penetrates the two connecting plates (11).

6. The micro tiller trailer structure of claim 5, wherein, The rear cross beam (3) comprises a horizontal plate (31) and a vertical plate (32), the vertical plate (32) is connected to one side of the horizontal plate (31) and extends along the length direction of the horizontal plate (31); the mounting hole is arranged on the horizontal plate (31).

7. The micro tiller trailer structure of claim 6, wherein, The lower end of the vertical plate (32) is provided with two limiting grooves (33) corresponding to the connecting plates (11), the width of the limiting groove (33) matches the thickness of the connecting plate (11); the vertical plate (32) is clamped on the connecting plate (11) through the limiting groove (33) and is welded.

8. The micro tiller trailer structure of claim 7, wherein, The side of the vertical plate (32) towards the hanging body (2) is arranged in close contact with the hanging body (2) and is welded.

9. The micro tiller trailer structure of claim 5, wherein, The two connecting plates (11) and the rib plate (12) are integrally bent and formed, and the rib plate (12) is located below the connecting plate (11).

10. The micro tiller trailer structure of claim 1, wherein, The mounting hole is a strip-shaped hole arranged along the length direction of the rear cross beam (3).

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