Spinning type cutter bar belt pulley

Abstract

The utility model discloses a spinning type cutter bar belt pulley which comprises a shaft piece, a V-shaped groove belt pulley and a flat belt pulley. The V-shaped groove belt wheel and the flat belt wheel are arranged at the two ends of the shaft piece respectively. An integrally-formed flat key is arranged on the shaft piece. The V-shaped groove belt wheel and the flat belt wheel which are fixed through welding are arranged at the two ends of the shaft piece. The V-shaped groove belt wheel and the flat belt wheel can be independently machined, and the V-shaped groove belt wheel and the flat belt wheel are assembled and fixed with the shaft piece after machining is completed, so that the machining efficiency of the belt wheel assembly is improved. Meanwhile, compared with casting machining, the V-shaped groove belt wheel formed through spinning and the flat belt wheel formed through extrusion have the advantages of being material-saving, low in cost, light in structure, high in assembling efficiency, long in service life of products and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical transmission mechanisms, and in particular relates to a spinning type cutter bar pulley. Background Art

[0002] The garden machinery industry currently uses pulley assemblies, which are usually cast. The products produced by this method have disadvantages such as heavy weight, complex processing and casting defects. In addition, the product production efficiency is low, the raw material cost is high, the product scrap rate is high, and the product ex-factory price is high, which cannot meet customer requirements.

[0003] In addition, pulleys that can only carry a single type of belt have a limited application range and cannot meet customers' installation requirements for different types of belts. Utility Model Content

[0004] In order to make up for the deficiencies of the prior art, the utility model provides a spinning type cutter bar pulley to solve the technical problems of high casting cost, small application range and the like.

[0005] To achieve the above purpose, the specific technical solution of the utility model is as follows:

[0006] The rotary cutter bar pulley comprises a shaft, a V-groove pulley and a flat pulley. The V-groove pulley and the flat pulley are respectively arranged at two ends of the shaft. The shaft is provided with an integrally formed flat key.

[0007] Furthermore, a first mounting hole is provided at the center of the V-groove pulley, and the V-groove pulley is sleeved on the corresponding side end of the shaft through the first mounting hole.

[0008] Furthermore, the shaft member is provided with a first step surface matching the first mounting hole.

[0009] Furthermore, a second mounting hole is provided at the center of the flat belt pulley, and the flat belt pulley is sleeved on the corresponding side end of the shaft member through the second mounting hole.

[0010] Furthermore, the shaft member is provided with a second step surface matching with the second mounting hole.

[0011] Furthermore, the V-groove pulley and the flat belt pulley are both welded and fixed to the shaft.

[0012] Furthermore, the shaft is in the shape of a hollow circular tube. The flat key is set on the inner wall of the shaft by stamping.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The utility model sets V-groove pulleys and flat pulleys fixed by welding at both ends of the shaft. The V-groove pulley and flat pulley can be processed separately and assembled and fixed with the shaft after processing, so that the processing efficiency of the pulley assembly is improved. At the same time, compared with casting processing, the V-groove pulley formed by spinning and the flat pulley formed by extrusion have the characteristics of material saving, low cost, light structure, high assembly efficiency and long product service life.

[0015] 2. The utility model is suitable for the installation of V-belt pulleys and flat belt pulleys by arranging V-groove pulleys and flat belt pulleys, so that it has a broader application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the relative positions of the spinning part and the flat pulley in the utility model;

[0018] Figure 3 It is a structural schematic diagram of the central axis member of the utility model.

[0019] Figure numerals: 1, shaft; 1-1, first step surface; 1-2, second step surface; 2, V-groove pulley; 2-1, first mounting hole; 3, flat pulley; 3-1, second mounting hole; 4, flat key. DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "upper", "inside", "horizontal", "coaxial", "center", "end", "length", "outer end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0021] The utility model will be further described below in conjunction with the accompanying drawings.

[0022] like Figure 1 and 2 As shown, the spinning type cutter bar pulley comprises a shaft 1, a spinning part and a flat pulley 3. The spinning part and the flat pulley 3 are respectively fixed at both ends of the shaft 1. Among them, the spinning part adopts a V-groove pulley 2 formed by spinning, which is used to install the corresponding type of belt.

[0023] like Figure 2As shown, a first mounting hole 2-1 is provided at the center of the V-groove pulley 2. During installation, the V-groove pulley 2 is sleeved on the corresponding side end of the shaft member 1 through the first mounting hole 2-1. The V-groove pulley 2 and the shaft member 1 are fixed by welding.

[0024] Furthermore, a first step surface 1-1 matching with the first mounting hole 2-1 is provided on the shaft 1. During installation, the first step surface 1-1 limits the installation limit position of the inner end of the V-groove pulley 2, thereby facilitating welding work for the staff.

[0025] like Figure 2 As shown, a second mounting hole 3-1 is provided at the center of the extruded flat pulley 3. During installation, the flat pulley 3 is sleeved on the corresponding side end of the shaft member 1 through the second mounting hole 3-1. The flat pulley 3 and the shaft member 1 are fixed by welding.

[0026] Furthermore, a second step surface 1-2 matching with the second mounting hole 3-1 is provided on the shaft 1. During installation, the second step surface 1-2 limits the installation limit position of the inner end of the flat pulley 3, thereby facilitating the welding work of the staff.

[0027] like Figure 3 As shown, the shaft 1 is in the shape of a hollow circular tube, and a stamped flat key 4 is provided on the inner wall. When installed, the shaft 1 is placed on the corresponding transmission shaft. Through the insertion and limiting of the flat key 4 and the corresponding groove on the transmission shaft, the V-groove pulley 2 and the flat belt pulley 3 can receive the transmission torque output by the transmission shaft.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. Spinning type knife bar pulley, characterized by: The invention comprises a shaft (1), a V-groove pulley (2) and a flat pulley (3); the V-groove pulley (2) and the flat pulley (3) are respectively mounted on two ends of the shaft (1); and an integrally formed flat key (4) is provided on the shaft (1).

2. The spinning type cutter bar pulley according to claim 1, characterized in that: A first mounting hole (2-1) is provided at the center of the V-groove pulley (2); the V-groove pulley (2) is sleeved on the corresponding side end of the shaft (1) through the first mounting hole (2-1).

3. The spinning cutter bar pulley according to claim 2, characterized in that: The shaft member (1) is provided with a first step surface (1-1) which matches the first mounting hole (2-1).

4. The spinning cutter bar pulley according to claim 1, characterized in that: A second mounting hole (3-1) is provided at the center of the flat belt pulley (3); the flat belt pulley (3) is sleeved on the corresponding side end of the shaft member (1) through the second mounting hole (3-1).

5. The spinning cutter bar pulley according to claim 4, characterized in that: The shaft member (1) is provided with a second step surface (1-2) matching with the second mounting hole (3-1).

6. The spinning type cutter bar pulley according to claim 1, characterized in that: The V-groove pulley (2) and the flat belt pulley (3) are both welded and fixed to the shaft member (1).

7. The spinning cutter bar pulley according to claim 1, characterized in that: The shaft member (1) is in the shape of a hollow circular tube; the flat key (4) is arranged on the inner wall of the shaft member (1) by stamping.

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