Cutter shaft with dense cutter holders

Abstract

The utility model relates to a cutter shaft with dense cutter holders, which belongs to the technical field of cutter shafts and comprises a cutter shaft, two groups of cutter holder components are arranged on the cutter shaft, and each group of cutter holder components comprises a plurality of cutter holder parts which are spirally arranged on the surface of the cutter shaft. And one group of tool apron components rotate by 90 degrees relative to the other group of tool apron components by taking the axis of the cutter shaft as a rotating center. The application has the effect of improving the utilization rate of the surface space of the cutter shaft so as to achieve the effect of improving the cutting efficiency when the cutter shaft is used.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of cutter shaft, especially a cutter shaft of dense cutter seat. BACKGROUND

[0002] The mower has very important application in agricultural production, landscaping, forest protection and the like, the cutter shaft of the mower is a key component installed on the mower, the cutter shaft is rotatably arranged on the mower, a plurality of hoes for mowing operation are arranged on the cutter shaft, the plurality of hoes are arranged on the cutter shaft in a spiral shape, both sides of the hoe are provided with a cutter seat fixedly welded with the cutter shaft, and the hoe and the cutter seat are fixed through a bolt and a nut.

[0003] In the prior art, the cutter seats on the cutter shaft are mostly arranged on the cutter shaft in a spiral shape, but the size of the cutter shaft is different according to the use scene of the instrument or the size of the instrument itself, and it is found in actual use that, for example, Figure 1 As shown in the figure, in the case that the diameter of the cutter shaft is too large, the utilization rate of the surface space of the cutter shaft is small, which affects the cutting efficiency when the cutter shaft is used. CONTENT OF THE UTILITY MODEL

[0004] In order to improve the utilization rate of the surface space of the cutter shaft, the application provides a cutter shaft of dense cutter seat.

[0005] The application provides a cutter shaft of dense cutter seat, which adopts the following technical scheme:

[0006] The cutter shaft of dense cutter seat comprises a cutter shaft, two groups of cutter seat assemblies are arranged on the cutter shaft, each group of the cutter seat assemblies comprises a plurality of cutter seat pieces, the plurality of cutter seat pieces are arranged on the surface of the cutter shaft in a spiral shape, and one group of the cutter seat assemblies is arranged at 90° around the axis of the cutter shaft compared with the other group of the cutter seat assemblies.

[0007] Through the arrangement of the two groups of cutter seat assemblies, the utilization rate of the surface of the cutter shaft is improved, and the cutting efficiency of the cutting operation using the cutter shaft is improved.

[0008] Preferably, the cutter seat piece comprises a fixing seat arranged on both sides of the hoe, one side of the fixing seat is provided with a connecting curved surface matched with the surface of the cutter shaft, and the other end of the fixing seat is provided with a cutting curved surface consistent with the curvature of the connecting curved surface.

[0009] Through the arrangement that the connecting curved surface is matched with the surface of the cutter shaft, the contact area between the fixing seat and the cutter shaft is ensured, the connecting strength between the fixing seat and the cutter shaft is ensured, the reliability of the fixation of the hoe to the cutter shaft through the fixing seat is improved, and through the arrangement that the curvature of the connecting curved surface is consistent with the curvature of the cutting curved surface, the cutting manufacturing of the fixing seat is facilitated, and the loss in the production process is reduced.

[0010] Preferably, a fixing sleeve is sleeved on the fixing seat, the fixing sleeve has a certain elasticity, the inner wall of the fixing sleeve is attached to the fixing seat, and the end face of the fixing sleeve away from the fixing seat is abutted against the hoe.

[0011] By adopting the above technical scheme, the fixing sleeve can fill the gap between the fixing seat and the hoe, not only making the hoe not easy to rub against the fixing seat, but also increasing the friction between the fixing seat and the hoe, so that the hoe is not easy to displace relative to the shaft, reducing the damage of the hoe to the shaft due to stress, prolonging the service life of the device; the fixing sleeve and the fixing seat are detachably arranged, which is not easy to be affected by the fixing sleeve during the process of welding the fixing seat to the shaft, thereby ensuring the welding quality of the fixing seat.

[0012] Preferably, a connecting through hole and an embedded counterbore are provided through the fixing sleeve, the connecting through hole and the embedded counterbore are symmetrically arranged on both sides of the fixing seat, the connecting through hole is used for penetrating the bolt for fixing the hoe, and the embedded counterbore is used for accommodating the head of the bolt.

[0013] By adopting the above technical scheme, through the cooperation of the connecting through hole and the embedded counterbore, on the one hand, the fixing sleeve and the fixing seat are fixed by the cooperation of the bolt and the nut, the bolt for fixing the contact and the fixing seat is generally a hexagonal bolt, and under the cooperation of the head of the bolt and the embedded counterbore, the rotation of the bolt can be limited, so that the bolt is not easy to loosen, thereby improving the reliability of fixing the hoe and the fixing seat by the bolt.

[0014] Preferably, the fixing sleeve is made of rubber material.

[0015] By adopting the above technical scheme, the rubber not only has good wear resistance and elastic deformation ability, but also has good shock absorption performance, which reduces the noise between the hoe and the fixing seat during use of the shaft, and improves the comfort during use.

[0016] In summary, the present application has at least one of the following beneficial technical effects:

[0017] 1. By arranging two groups of seat assemblies, the space utilization rate of the shaft surface is improved, thereby improving the cutting efficiency of the cutting operation using the shaft;

[0018] 2. By arranging the connecting arc surface to be attached to the surface of the shaft, the contact area between the fixing seat and the shaft is ensured, thereby ensuring the connection strength between the fixing seat and the shaft, improving the reliability of fixing the hoe to the shaft through the fixing seat, and through the arrangement that the curvature of the connecting arc surface is consistent with the curvature of the cutting arc surface, the cutting manufacturing of the fixing seat is facilitated, and the loss in the production process is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1Prior art structure schematic diagram of the embodiment of the present application.

[0020] Figure 2 Overall structure schematic diagram of the embodiment of the present application.

[0021] Figure 3 Side view of the embodiment of the present application.

[0022] Figure 4 Hoe connecting structure schematic diagram of the embodiment of the present application.

[0023] Figure 5 Structure schematic diagram of the fixed sleeve being sleeved on the fixed seat in the embodiment of the present application.

[0024] Figure 6 Another side view structure schematic diagram of the fixed sleeve being sleeved on the fixed seat in the embodiment of the present application.

[0025] Figure 7 Top view of the fixed sleeve being sleeved on the fixed seat in the embodiment of the present application.

[0026] Marked: 1, the cutter shaft; 2, the cutter seat assembly; 21, the cutter seat piece; 22, the fixed seat; 221, the connecting camber surface; 222, the cutting camber surface; 3, the fixed sleeve; 31, the connecting through hole; 32, the embedded counterbore; 4, the bolt; 41, the nut; 5, the hoe. DETAILED DESCRIPTION

[0027] The following will be combined with the accompanying Figures 2-7 The utility model is further explained in detail.

[0028] The embodiment of the present application discloses a dense cutter seat cutter shaft, referring to Figure 2 and Figure 3 , including the cutter shaft 1, the cutter shaft 1 is equipped with two groups of cutter seat assemblies 2, a single group of cutter seat assemblies 2 includes multiple cutter seat pieces 21, multiple cutter seat pieces 21 are arranged on the surface of the cutter shaft 1 in a spiral shape, the number of a single group of cutter seat pieces 21 is determined according to the diameter, length and pitch of the spiral of the cutter seat piece 21 of the cutter shaft 1, in the embodiment of the present application, a single group of cutter seat assemblies 2 includes twenty-eight cutter seat pieces 21, one group of cutter seat assemblies 2 is arranged at 90 ° with the axis of the cutter shaft 1 as the rotation center compared with the other group of cutter seat, the marked position of the cutter seat assembly 2 in the drawing is the starting point of the two groups of cutter seat assemblies 2, through the arrangement of the two groups of cutter seat assemblies 2, the space utilization of the surface of the cutter shaft 1 is improved, so that the cutting efficiency of cutting operation using the cutter shaft 1 is improved.

[0029] Referring to Figure 2 , Figure 3 and Figure 4The fixed seat 22 is provided with a connecting arc surface 221 on one side and a cutting arc surface 222 on the other end, the connecting arc surface 221 is in close contact with the surface of the blade shaft 1, the cutting arc surface 222 has the same curvature as the connecting arc surface 221, the connecting arc surface 221 is in close contact with the surface of the blade shaft 1, which ensures the contact area between the fixed seat 22 and the blade shaft 1, thereby ensuring the connection strength between the fixed seat 22 and the blade shaft 1, and improving the reliability of the fixed seat 22 and the blade shaft 1, and the cutting arc surface 222 has the same curvature as the connecting arc surface 221, which facilitates the cutting manufacturing of the fixed seat 22 and reduces the loss in the production process.

[0030] With reference to Figure 5 , Figure 6 and Figure 7 , the fixed seat 22 is sleeved with a fixed sleeve 3, the fixed sleeve 3 has a certain elasticity, the inner wall of the fixed sleeve 3 is in close contact with the fixed seat 22, and the fixed sleeve 3 and the fixed seat 22 are fixed by sleeving, which facilitates the assembly of the fixed sleeve 3 on the fixed seat 22, makes the inner wall of the fixed sleeve 3 in close contact with the fixed seat 22, and makes the end face of the fixed sleeve 3 away from the fixed seat 22 abut against the hoe 5, so that the fixed sleeve 3 can fill the gap between the fixed seat 22 and the hoe 5, not only makes the hoe 5 not easy to rub against the fixed seat 22, but also increases the friction between the fixed seat 22 and the hoe 5, so that the hoe 5 is not easy to displace relative to the blade shaft 1, reduces the damage of the hoe 5 to the blade shaft 1 due to stress, and prolongs the service life of the device; the fixed sleeve 3 and the fixed seat 22 are detachably arranged, which is not easy to be affected by the fixed sleeve 3 during the welding of the fixed seat 22 to the blade shaft 1, and ensures the welding quality of the fixed seat 22.

[0031] With reference to Figure 5 , Figure 6 and Figure 7 , the fixed sleeve 3 is provided with a connecting through hole 31 and an embedded counterbore 32, the connecting through hole 31 and the embedded counterbore 32 are symmetrically arranged on both sides of the fixed seat 22, the connecting through hole 31 is used for penetrating the bolt 4 for fixing the hoe 5, and the embedded counterbore 32 is used for accommodating the screw head of the bolt 4, through the cooperation of the connecting through hole 31 and the embedded counterbore 32, on the one hand, the fixed sleeve 3 and the fixed seat 22 are fixed by the cooperation of the bolt 4 and the nut 41, the bolt 4 for fixing the contact and the fixed seat 22 is generally a hexagonal bolt, and under the cooperation of the screw head of the bolt 4 and the embedded counterbore 32, the rotation of the bolt 4 can be limited, so that the bolt 4 is not easy to loosen, thereby improving the reliability of the hoe 5 and the fixed seat 22 fixed by the bolt 4. In addition, since the fixed sleeve 3 has a certain elasticity, the collision between the bolt 4 and the fixed sleeve 3 is not easy to cause damage to the fixed seat 22, and the fixed sleeve 3 is not easy to be damaged due to the shaking of the bolt 4.

[0032] The fixed sleeve 3 is made of rubber material. The rubber has good wear resistance, elastic deformation capacity, and good shock absorption performance. The noise between the hoe 5 and the fixed seat 22 during use of the cutter shaft 1 is reduced, and the comfort during use is improved.

[0033] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A tool shaft for a dense tool holder, comprising a tool shaft (1), characterized in that, The cutter shaft (1) is provided with two groups of cutter seat assemblies (2), and each group of the cutter seat assemblies (2) comprises a plurality of cutter seat pieces (21) arranged in a spiral shape on the surface of the cutter shaft (1), and one group of the cutter seat assemblies (2) is arranged at an angle of 90° with the other group of the cutter seat assemblies (2) with the axis of the cutter shaft (1) as the rotation center.

2. The arbor for a gang knife as defined in claim 1, wherein, The cutter seat piece (21) comprises a fixed seat (22) arranged on both sides of the hoe (5), one side of the fixed seat (22) is provided with a connecting arc surface (221) matched with the surface of the cutter shaft (1), and the other end of the fixed seat (22) is provided with a cutting arc surface (222) consistent with the curvature of the connecting arc surface (221).

3. The arbor for a gang knife assembly of claim 2 wherein, The fixed seat (22) is sleeved with a fixed sleeve (3), the fixed sleeve (3) has a certain elasticity, the inner wall of the fixed sleeve (3) is matched with the fixed seat (22), and the end face of the fixed sleeve (3) away from the fixed seat (22) is tightly abutted against the hoe.

4. The arbor for a gang knife assembly of claim 3 wherein, The fixed sleeve (3) is provided with a connecting through hole (31) and an embedded counterbore (32), the connecting through hole (31) and the embedded counterbore (32) are symmetrically arranged on both sides of the fixed seat (22), the connecting through hole (31) is used for penetrating the bolt (4) for fixing the hoe, and the embedded counterbore (32) is used for accommodating the screw head of the bolt (4).

5. The arbor for a gang knife assembly of claim 3 wherein, The fixed sleeve (3) is made of rubber material.

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