Hanging assembly and towing assembly of mini-tiller

Abstract

The utility model discloses a mini-tiller hitching assembly and towing assembly which comprises a hitching arm, one end of the hitching arm is used for being connected with an operation accessory, the other end of the hitching arm is provided with a hinged sleeve, and the two sides of the hitching arm are symmetrically provided with limiting plates expanding outwards. The ends, away from the hanging arms, of the limiting plates are bent in the direction of the hinged sleeve to form a top connecting part, the side edge of the top connecting part is parallel to the hinged sleeve, the hinged sleeve is located between the two limiting plates, and the axis of the hinged sleeve is located on the symmetric center face of the two limiting plates. The hitching assembly and the towing assembly have the advantages of being simple and reasonable in structure, convenient to install, capable of limiting the swing amplitude and the like.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a micro-tiller attachment component and trailer assembly. Background Technology

[0002] Mini tillers are agricultural machines widely used in mountainous and other farmland areas. Their small size and flexible operation make them popular. Mini tillers typically consist of a main unit providing power and detachably attached working attachments. For easy attachment connection, a trailer is usually located at the rear of the main unit, to which the working attachments are detachably connected. Typically, the rear end of the trailer has a horizontally extending mounting slot, with vertically extending hinge holes on both the upper and lower sides of the slot. The working attachment fits into the mounting slot via a mounting assembly and is connected within the slot via a hinge shaft passing through the hinge holes. Because there is only one hinge shaft between the mounting assembly and the trailer, the working attachment can swing significantly left and right around the hinge shaft, which is detrimental to tilling operations. Therefore, there is a need for a mounting assembly that can limit the swing amplitude. Utility Model Content

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to provide a simple and reasonable structure, easy to install, and capable of limiting the swing amplitude of the hanging component and the towing assembly.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A micro-tiller attachment assembly includes an attachment arm, one end of which is used to connect to a working attachment, and the other end has a hinged sleeve. Symmetrically arranged on both sides of the attachment arm are outwardly extending limiting plates. The end of the limiting plate away from the attachment arm is bent toward the hinged sleeve to form a top connection portion. The side of the top connection portion is parallel to the hinged sleeve. The hinged sleeve is located between the two limiting plates, and its axis is located on the symmetrical center plane of the two limiting plates.

[0006] In the above structure, because the hinged sleeve has symmetrical limiting plates on both sides, and the limiting plates are bent towards the hinged sleeve to form a top contact portion, the top contact portions at both ends of the symmetrically arranged limiting plates can form a limiting space with the bottom of the corresponding hanging groove during the rotation of the hanging arm around the axis of the hinged sleeve, thereby restricting the swing space of the hanging arm. This structure is simple and reasonable, and easy to install.

[0007] Furthermore, the two limiting plates are integrally formed by V-shaped bending, and the hinge sleeve is tangentially disposed to the two limiting plates and welded together; the side of the bent edge of the two limiting plates facing away from the hinge sleeve is welded to the hanging arm.

[0008] In this way, 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, which can ensure the strength of the three and help extend the service life.

[0009] Furthermore, the two limiting plates have positioning holes that are vertically through the plane of symmetry on their bent edges, and the hook arm has a protruding positioning post that is inserted into the positioning hole and welded together.

[0010] In this way, the positioning pin and positioning hole can be matched to ensure a reliable relative position before welding, which helps to ensure the consistency of welding quality and dimensions.

[0011] Furthermore, the cross-section of the positioning hole and the positioning post is rectangular.

[0012] Furthermore, the connecting arm, hinge sleeve, and limiting plate are integrally cast.

[0013] A trailer assembly includes a trailer body, the rear end of which has a horizontally through-hole mounting groove, and the upper and lower sides of the mounting groove have vertically through-hole hinge holes; it also includes a micro-tiller mounting component as described above, the hinge sleeve being connected to the mounting groove via a hinge shaft passing through the hinge hole, and the top part of the limiting plate having a swing gap with the bottom of the mounting groove.

[0014] Furthermore, the towing body includes a connecting body that is generally elongated, with multiple bolt holes for connecting the gearbox arranged along the edge at the front end of the connecting body, and a mounting bracket welded to the rear end, with the mounting slot located on the side of the mounting bracket away from the connecting body.

[0015] Furthermore, the mounting body is integrally formed by bending into a U-shape, and the hinge hole is vertically and continuously disposed in the middle of the mounting body.

[0016] 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.

[0017] 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.

[0018] In summary, the mounting component and towing assembly of this utility model have the advantages of simple and reasonable structure, convenient installation, and ability to limit the swing amplitude. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this embodiment.

[0020] Figure 2 for Figure 1 A schematic diagram of its decomposed structure.

[0021] Figure 3 This is a structural diagram of the mounting components.

[0022] Figure 4 A schematic diagram of the reinforcing ring structure.

[0023] Figure 5 This is a structural schematic diagram of the rear crossbeam.

[0024] Figure 6 This is a structural diagram of the connector and the hanger. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to an embodiment of a trailer assembly.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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 hitch assembly comprising a hitch arm (4) one end of which is for connecting a work attachment and the other end of which has a hinged sleeve (5), characterised in that, The two sides of the hanging arm (4) are symmetrically provided with outwardly expanding limiting plates (6), one end of the limiting plate (6) away from the hanging arm (4) is bent to form a top abutting part towards the direction of the hinge sleeve (5), the side edge of the top abutting part is parallel to the hinge sleeve (5), the hinge sleeve (5) is located between the two limiting plates (6), and the shaft center is located on the symmetric center plane of the two limiting plates (6).

2. The micro tiller hitching assembly of claim 1, wherein, The two limiting plates (6) are integrally bent in a V shape, the hinge sleeve (5) is tangentially arranged and welded with the two limiting plates (6); the bent edges of the two limiting plates (6) away from the hinge sleeve (5) are welded with the hanging arm (4).

3. The micro tiller hitching assembly of claim 2, wherein, The bent edges of the two limiting plates (6) are provided with positioning holes vertically penetrating along the symmetric center plane, the hanging arm (4) is provided with a positioning column protruding, the positioning column is inserted into the positioning hole and welded.

4. The micro tiller hitching assembly of claim 3, wherein, The cross section of the positioning hole and the positioning column is rectangular.

5. The micro tiller hitching assembly of claim 1, wherein, The hanging arm (4), the hinge sleeve (5) and the limiting plate (6) are integrally casted.

6. A trailer assembly comprising a trailer body, the trailer body having a transversely extending hitch slot (21) at a trailing end thereof, the hitch slot (21) having vertically extending hinge apertures (22) on opposite sides thereof; characterised in that, Also comprising the micro tiller hanging assembly as claimed in any one of claims 1-5, the hinge sleeve (5) is connected in the hanging groove (21) through a hinge shaft penetrating the hinge hole (22), and the top abutting part of the limiting plate (6) and the bottom of the hanging groove (21) have a swing gap.

7. The towed assembly of claim 6, wherein, The trailer body comprises a connection body (1) in a whole strip shape, a plurality of bolt holes for connecting a gearbox are arranged on the front end of the connection body (1) along the edge, and a hanging body (2) is welded on the rear end, and the hanging groove (21) is located on the side of the hanging body (2) away from the connection body (1).

8. The towed assembly of claim 7, wherein, The hanging body (2) is integrally bent in a U shape, and the hinge hole (22) is vertically and penetratingly arranged in the middle of the hanging body (2).

9. The towed assembly of claim 8, 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).

10. The towed assembly of claim 9, 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 is fitted in the hinge hole (22).

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