Clamping type cutter head for rotary cultivator

Abstract

The utility model relates to the technical field of agricultural machinery appliances, in particular to a clamping type cutter head for a rotary cultivator. The utility model provides a rotary cultivator clamping type cutterhead which comprises disc bodies which are symmetrically arranged and used for clamping and fixing a rotary tillage cutter, a gap for clamping the cutter is formed between the disc bodies, and a supporting sleeve capable of conducting circumferential limiting operation on the cutter is arranged between the disc bodies. A first through hole used for being connected with a transmission shaft of the rotary cultivator is formed in the center of the disc body. Due to the fact that the cutter head is provided with the two sets of disc bodies and the supporting sleeves, balanced clamping stress operation can be conducted on a cutter through the two sets of disc bodies, the clamped cutter can also be clamped through the supporting sleeves, and the problems that in the prior art, a cutter head is of a single-piece type design, the cutter can only be fixed to one side of the disc body through bolts, and the cutter head cannot be fixed to the other side of the disc body through bolts are solved. Therefore, when the cutter encounters an object with larger resistance, the cutter is easy to laterally break due to unbalanced stress.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agricultural machinery, in particular to a clamping type cutter head for rotary cultivators. BACKGROUND

[0002] The existing rotary cultivator cutter head usually adopts a single-piece disc body design, and the cutter is fixed to one side of the disc body by bolts. This design has some obvious defects in actual application. Since the cutter is connected to the disc body on only one side, the cutter is not balanced in force during work, especially when encountering hard soil or grass roots and other objects with high resistance, the cutter is prone to lateral breakage, affecting the rotary cultivation effect, thereby increasing the frequency of replacing the cutter and maintenance costs. CONTENT OF THE UTILITY MODEL

[0003] The problem to be solved by the present application is that the existing cutter head is designed as a single piece, so that the cutter can only be fixed to one side of the disc body by bolts, thereby causing the cutter to be prone to lateral breakage due to unbalanced force when encountering objects with high resistance.

[0004] To solve the above technical problems, the present application provides a clamping type cutter head for rotary cultivators, comprising disc bodies arranged symmetrically for clamping and fixing rotary cultivator cutters, the disc bodies have gaps for clamping cutters therebetween, and the disc bodies are provided with a sleeve capable of circumferentially limiting the cutters, and the center of the disc body is formed with a first through hole for connecting with a transmission shaft of the rotary cultivator.

[0005] Since the cutter head of the present application is designed with two disc bodies and a sleeve, it can not only balance the clamping force of the cutters through the two disc bodies, but also solve the problem of the cutter being prone to lateral breakage due to unbalanced force when encountering objects with high resistance by clamping the cutters with the sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0006] Figure 1 It is a perspective structural schematic diagram of the first embodiment.

[0007] Figure 2 It is a front view structural schematic diagram of the first embodiment.

[0008] Figure 3 It is a side view structural schematic diagram of the first embodiment.

[0009] Figure 4 It is a rear view structural schematic diagram of the first embodiment.

[0010] Figure 5 It is a fourth through hole structural schematic diagram of the first embodiment.

[0011] Figure 6A schematic view of the stereo structure of Example 2.

[0012] Figure 7 A schematic view of the stereo structure of Example 3.

[0013] In the figure: 1, disc body; 2, sleeve; 3, third through hole; 4, second through hole; 5, first through hole; 6, fourth through hole; 7, fifth through hole; 8, sixth through hole. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the scope of protection of the present application. EMBODIMENT

[0015] The present application relates to a clamping type cutter head for a rotary cultivator, as shown in the figure, the cutter head comprises disc bodies 1 symmetrically arranged for clamping and fixing rotary cultivator cutters, in order to facilitate the clamping operation of the cutter, therefore, a gap for clamping the cutter is reserved between the disc bodies 1, in order to avoid the circumferential deformation of the cutter during use after clamping, a sleeve 2 is additionally arranged between the disc bodies 1 to limit the circumferential movement of the cutter, so that the cutter can only be uniformly stressed on both sides under the limitation of the symmetrically arranged disc bodies 1, and the circumferential rotation of the cutter can be prevented by the sleeve 2. Figures 1-5 In order to facilitate the connection and fixing operation of the disc bodies 1, the disc bodies 1 are disc-shaped structures, a first through hole 5 is formed at the center position of the disc body 1 for connecting with the transmission shaft of the rotary cultivator, and the disc body 1 is welded and fixed after being assembled with the transmission shaft of the rotary cultivator through the first through hole 5.

[0016] In order to realize the connection and fixing between the disc bodies 1, second through holes 4 for connecting the disc bodies 1 are uniformly arranged on the upper part of the disc body 1 along the circumferential direction of the first through hole 5, in order to ensure that the disc bodies 1 can be uniformly stressed after being connected, the number of the second through holes 4 is preferably four, and they are uniformly arranged on the surface of the disc body 1.

[0017]

[0018] ​In order to achieve the connection and fixation between the disc body 1 and the tool, third through holes 3 for connecting with the tool are evenly arranged on the upper part of the disc body 1 along the circumferential direction of the first through hole 5. In order to prevent the bolts between the tool and the disc body 1 from rotating due to vibration, the third through hole 3 on the upper part of one of the disc bodies 1 is square, and the third through hole 3 on the upper part of the other disc body 1 is circular. The bolt used for connection has a square column at one end of its rod body, a hemispherical bald head at the end of the square column, and a circular column at the other end of its rod body for passing through the circular third through hole 3 and then locked and fixed with a nut.

[0019] In order to prevent the sleeve 2 from rotating circumferentially between the disc body 1, a fourth through hole 6 is symmetrically formed on the upper part of the sleeve 2 and is adapted to the second through hole 4, so that the disc body 1 and the sleeve 2 are fixed by riveting through the rivet columns passing through the second through hole 4 and the fourth through hole 6, and the edge of the sleeve 2 is also welded to the disc body 1. Example

[0020] Based on the first embodiment, Figure 6 As shown, the cutter disc at the end of the rotary tillage drive shaft has to withstand a large impact force. Therefore, in order to improve the connection strength between the cutter disc and the drive shaft, a fifth through hole 7 is evenly opened in the circumferential direction near the first through hole 5 on the upper part of the disc body 1, and a sixth through hole 8 corresponding to the fifth through hole 7 is adapted on the upper part of the sleeve 2, so that the rivet column passes through and is riveted and fixed to the drive shaft. Among them, in order to improve adaptability, the fifth through hole 7 is circular and the sixth through hole 8 is hexagonal. Example

[0021] Based on the second embodiment, Figure 7 As shown, in order to further improve the connection strength between the cutter disc and the drive shaft, there is a partial overlap between the fifth through hole 7 and the first through hole 5, and the side of the rivet stud close to the drive shaft is processed into a concentric arc shape that is compatible with the drive shaft, thereby increasing the contact area between the rivet stud and the drive shaft, and then increasing the welding strength after riveting, so that the connection strength between the cutter disc and the drive shaft is simultaneously improved.

[0022] When in use, the disc body 1 and the support sleeve 2 are first pre-assembled, and then fixed by riveting and welding through rivet columns, and then the disc body 1 is fixed to the upper part of the transmission shaft by welding, and then the rotary tillage tool is inserted into the gap between the disc bodies 1 in turn, and then the tool is locked and fixed through the bolt. In order to facilitate the clamping of the tool and avoid lateral shaking of the tool in the gap, the ratio of the width of the tool to the width of the gap is 1:1.1~1.5. The user can appropriately select any clamping cutter disc in Examples 1 to 3 according to actual production needs.

[0023] In general, terminology can be understood at least in part from usage in context. For example, terms, such as "one or more" as used herein, can be taken to describe any feature, structure, or characteristic in the singular or can be taken to describe a combination of features, structures or characteristics in the plural sense. Similarly, terms, such as "a" or "an," as used herein can be taken to convey a singular usage or a plural usage, depending at least in part on context.

[0024] It will be readily understood that the terms "on," "above," and "over," in the present disclosure, are to be interpreted in the broadest context possible so that "on" means not only "directly on" but also includes the meaning of "on" with intervening features or layers therebetween, and "above" or "over" includes not only the meaning of "above" or "over" but also can include the meaning of "above" or "over" without intervening features or layers therebetween (i.e., directly on).

[0025] In addition, spatially relative terms, such as "beneath", "below", "lower", "above", "upper", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0026] Finally, it should be noted that the above-described embodiments are merely intended to illustrate the technical solutions of the present application, but not to limit the same; even though the present application has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above-described embodiments, or equivalently replace some or all of the technical features thereof; and such modifications or replacements do not cause the technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A clamped cutterhead for a rotary cultivator, characterized in that: The utility model discloses a disc body that is arranged symmetrically for clamping and fixing operation of rotary cultivator tool, and the disc body has a gap for clamping tool between the disc body, and the disc body is provided with a sleeve that can limit the tool in the circumferential direction between the disc body, and the disc body is formed with a first through hole for connecting with the transmission shaft of rotary cultivator in the central position.

2. The clamped cutting head for a rotary tiller of claim 1, wherein: The upper part of the disc body is uniformly arranged with a second through hole for connecting the disc body along the circumferential direction of the first through hole.

3. The clamped cutting head for a rotary tiller of claim 1, wherein: The upper part of the disc body is uniformly arranged with a third through hole for connecting the tool along the circumferential direction of the first through hole.

4. The clamped cutting head for a rotary tiller of claim 3, wherein: The third through hole of the upper part of one of the disc bodies is square, and the third through hole of the upper part of the other disc body is circular.

5. The clamped blade of claim 2 wherein: The upper part of the sleeve is symmetrically formed with a fourth through hole matched with the second through hole.

6. The clamped blade of claim 5 wherein: The disc body and the sleeve are riveted and fixed through the riveting column penetrating the second through hole and the fourth through hole.

7. The clamped cutting blade for a rotary tiller of claim 1, wherein: The upper part of the disc body is uniformly provided with a fifth through hole close to the circumferential direction of the first through hole.

8. The clamped blade of claim 7, wherein: The upper part of the sleeve is matched with a sixth through hole corresponding to the fifth through hole.

9. The clamped blade of claim 7 wherein: The fifth through hole partially overlaps the first through hole.

10. The clamped cutting head of any one of claims 1-9, wherein: The disc body is a disc structure.

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