Transmission assembly

Abstract

The utility model relates to the technical field of belt transmission, in particular to a transmission assembly. The transmission assembly comprises a cam and a shaft sleeve, the cam is provided with a central shaft hole and hole ribs arranged in the circumferential direction of the central shaft hole, the cam is rotatably arranged on the peripheral face of the shaft sleeve in a sleeving mode through the central shaft hole, containing cavities are formed in the two sides of the shaft sleeve, and the hole ribs are located in the containing cavities. A baffle perpendicular to the central shaft hole is arranged at an opening of the containing cavity, and the baffle is in clearance fit with the hole rib. A baffle is arranged at the opening of the containing cavity, the baffle can effectively block residual films, crop stalks and weeds and prevent the residual films, the crop stalks and the weeds from being wound on the hole ribs to hinder rotation of the cam, the baffle is in clearance fit with the hole ribs, and the situation that the baffle hinders rotation of the hole ribs and the residual films, the crop stalks and the weeds cannot enter the containing cavity through the gaps can be avoided. And it can be effectively guaranteed that rotation of the cam is not hindered.

Description

Technical Field

[0001] The utility model relates to the technical field of belt transmission, in particular to a transmission component. Background Art

[0002] In the field of agricultural machinery, belt transmission is usually used to transport harvested agricultural products. The cam is an important component in the belt transmission system. The belt is wound around the cam, and the rotation of the cam drives the belt to move to meet the needs of transporting items.

[0003] However, during the process of picking agricultural products, residual film, crop stems and weeds in the farmland will be rolled into the picking machine and transported to the belt together with the agricultural products. During this period, the residual film, crop stems and weeds are easily wrapped around the cam, causing the cam to be unable to rotate, causing the belt transmission system to malfunction and the agricultural products to be unable to be transported. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is that residual film, crop stems and weeds are easily wrapped around the cam, which causes the cam to be unable to rotate, resulting in failure of the transmission device and inability to transport agricultural products, thereby providing a transmission component.

[0005] In order to solve the above problems, the utility model provides a transmission component, characterized in that it includes: a cam and a sleeve, the cam having a central shaft hole and hole ribs arranged circumferentially along the central shaft hole, the cam being rotatably sleeved on the outer circumferential surface of the sleeve through the central shaft hole, a receiving cavity being constructed on both sides of the sleeve, the hole rib being located in the receiving cavity, a baffle plate being perpendicular to the central shaft hole at the opening of the receiving cavity, and the baffle plate being clearance-matched with the hole rib.

[0006] Furthermore, the end surface of the hole rib facing the baffle is a slope, the cross-sectional height of the hole rib gradually decreases along the extension direction toward the receiving cavity, and the end surface of the baffle facing the hole rib has a slope parallel to the slope of the hole rib.

[0007] Furthermore, it also includes:

[0008] The bolt is sleeved on the shaft sleeve, and a nut for fixing the shaft sleeve is arranged on the bolt. One end of the bolt away from the screw head is fixedly connected to the belt transmission device.

[0009] Furthermore, a fixing washer is sleeved on the bolt, and the fixing washer is arranged on a side of the nut away from the sleeve.

[0010] Furthermore, the shaft sleeve includes a pair of mating pieces, a side of the mating piece away from the other mating piece is configured with a receiving cavity, and the pair of mating pieces are fitted to each other.

[0011] Furthermore, both sides of the sleeve respectively have extension portions extending away from the center of the circle and parallel to the direction of gravity, the extension portions have bending portions bent toward the cam, one end of the baffle is fixedly connected to the bending portion, and the extension portion cooperates with the sleeve and the bending portion to form the accommodating cavity.

[0012] Furthermore, there is a gap between the rib and the extension portion.

[0013] Furthermore, the bevel angle of the rib is 4°.

[0014] Furthermore, the bent portion is parallel to the shaft sleeve.

[0015] Furthermore, the cam is a nylon wheel.

[0016] The utility model has the following advantages:

[0017] The utility model discloses a transmission component, wherein a receiving cavity is constructed on both sides of a shaft sleeve, a hole rib can be received in the receiving cavity, a baffle is arranged at the opening of the receiving cavity, the baffle can effectively block residual film, crop stems and weeds, and prevent the residual film, crop stems and weeds from being entangled on the hole ribs and hindering the rotation of a cam, and at the same time, the baffle and the hole rib gap cooperate to avoid the baffle hindering the rotation of the hole rib, the gap between the baffle and the hole rib is small, and the residual film, crop stems and weeds cannot enter the receiving cavity through the gap, thereby effectively ensuring that the rotation of the cam is not hindered, and avoiding the problem of malfunction of the transmission device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of a transmission assembly in an embodiment of the utility model;

[0020] Figure 2 It is a cross-sectional view of the transmission assembly in the embodiment of the utility model;

[0021] Description of reference numerals:

[0022] 1. Cam; 2. Bushing; 3. Center shaft hole; 4. Hole rib; 5. Baffle; 6. Bolt; 7. Nut; 8. Fixing gasket; 9. Matching part; 10. Extension part; 11. Bending part. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] like Figure 1 and Figure 2 As shown, this embodiment discloses a transmission assembly, including: a cam 1 and a sleeve 2. The cam 1 has a central shaft hole 3 and hole ribs 4 arranged circumferentially along the central shaft hole 3. The cam 1 is rotatably sleeved on the outer circumferential surface of the sleeve 2 through the central shaft hole 3. The sleeve 2 has a receiving cavity on both sides. The hole ribs 4 are located in the receiving cavity. The opening of the receiving cavity has a baffle 5 perpendicular to the central shaft hole 3. The baffle 5 and the hole ribs 4 are clearance-matched.

[0028] Specifically, the cam 1 is sleeved on the shaft sleeve 2 through the central shaft hole 3 and is coaxially arranged with the shaft sleeve 2. The cam 1 can rotate on the outer surface of the shaft sleeve 2. The cam 1 is rotatably connected with the belt. The movement of the belt can drive the cam 1 to rotate. The hole rib 4 is circumferentially arranged along the central shaft hole 3. Figure 2The central hole rib 4 extends toward the left and right sides of the central shaft hole 3 respectively, and the hole rib 4 is rotatably connected to the outer surface of the sleeve 2. The sleeve 2 is constructed with a receiving cavity on both sides, and the receiving cavity can accommodate the hole rib 4 in the receiving cavity. A baffle 5 perpendicular to the central shaft hole 3 is arranged at the opening of the receiving cavity. The baffle 5 can close the receiving cavity and prevent residual film, crop stems and weeds from entering the receiving cavity and winding around the hole rib 4. The baffle 5 and the hole rib 4 are matched with a gap, and the gap can ensure that the baffle 5 will not hinder the rotation of the hole rib 4, and the residual film, crop stems and weeds cannot enter the receiving cavity through the gap. In this embodiment, the cam is a driven wheel. In other optional embodiments, the cam can also be a driving wheel. The cam is connected to the motor through a rotating shaft to achieve the effect of active rotation; the cam can also be a tensioning wheel.

[0029] Furthermore, both sides of the sleeve 2 have extension portions 10 extending away from the center of the circle and parallel to the direction of gravity, the extension portion 10 has a bending portion 11 bent toward the cam 1, one end of the baffle 5 is fixedly connected to the bending portion 11, and the extension portion 10 cooperates with the sleeve 2 and the bending portion 11 to form a receiving cavity.

[0030] Specifically, Figure 2 As shown, the left and right sides of the sleeve 2 respectively have extension portions 10 extending away from the center of the circle. Figure 2 The middle extension portion 10 is parallel to the direction of gravity, and the upper end of the extension portion 10 has a bending portion 11 bent toward the cam 1, the bending portion 11 is parallel to the sleeve 2, the upper end of the baffle 5 is fixedly connected to one end of the bending portion 11 away from the extension portion 10, and the extension portion 10 cooperates with the sleeve 2 and the bending portion 11 to form a receiving cavity.

[0031] Further, such as Figure 2 As shown, there is a gap between the hole rib 4 and the extension portion 10, and the gap can ensure that the hole rib 4 is still in the receiving cavity when the cam 1 deviates left and right.

[0032] Furthermore, the end surface of the hole rib 4 facing the baffle 5 is an inclined surface, the cross-sectional height of the hole rib 4 gradually decreases along the extension direction toward the receiving cavity, and the end surface of the baffle 5 facing the hole rib 4 has an inclined surface parallel to the inclined surface of the hole rib 4.

[0033] Specifically, Figure 2 As shown, the end face of the hole rib 4 facing away from the sleeve 2 toward the baffle 5 is an inclined surface, the cross-sectional height of the hole rib 4 at one end close to the extension portion 10 is lower than the cross-sectional height of the other end of the hole rib 4, and the end face of the baffle 5 facing the hole rib 4 has an inclined surface parallel to the inclined surface of the hole rib 4.

[0034] Preferably, in this embodiment, the angle between the inclined surface of the hole rib 4 and the horizontal plane is 4°, and similarly, the angle of the inclined surface of the baffle 5 is also 4°. The inclined surface of 4° can ensure the stability of the structure of the cam 1.

[0035] Furthermore, it also includes: a bolt 6. The shaft sleeve 2 is sleeved on the bolt 6, and a nut 7 for fixing the shaft sleeve 2 is arranged on the bolt 6, and one end of the bolt 6 away from the screw head is fixedly connected to the belt transmission device.

[0036] Specifically, Figure 2 As shown, the nut 7 can cooperate with the screw head to fix the sleeve 2 on the bolt 6, and the right side of the bolt 6 can be fixedly connected to the belt transmission device, so that the cam 1 is rotatably connected to the belt.

[0037] Furthermore, a fixing gasket 8 is sleeved on the bolt 6, and the fixing gasket 8 is arranged on the side of the nut 7 away from the sleeve 2. The fixing gasket 8 can separate the cam 1 and the belt transmission device, thereby preventing residual film, crop stems and weeds from being wound around the frame of the belt transmission device.

[0038] Furthermore, the shaft sleeve 2 includes a pair of fittings 9 , and a receiving cavity is configured on a side of the fitting 9 away from the other fitting 9 , and the pair of fittings 9 fit each other.

[0039] Specifically, Figure 2 As shown, a pair of fittings 9 can facilitate the installation of the cam 1. The pair of fittings 9 can be first spaced apart on the bolt 6, and then the cam 1 can be sleeved on the surface of the pair of fittings 9, and then the pair of fittings 9 can be fitted together and fixed by nuts 7 and screw heads. When the cam 1 is severely worn, it is also convenient to disassemble and replace the cam 1.

[0040] Preferably, in this embodiment, the cam 1 is a nylon wheel.

[0041] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A transmission assembly, characterized in that: include: A cam (1) and a shaft sleeve (2), wherein the cam (1) has a central shaft hole (3) and hole ribs (4) arranged circumferentially along the central shaft hole (3), the cam (1) is rotatably sleeved on the outer circumferential surface of the shaft sleeve (2) through the central shaft hole (3), the shaft sleeve (2) is provided with receiving cavities on both sides, the hole ribs (4) are located in the receiving cavities, and the opening of the receiving cavity is provided with a baffle (5) perpendicular to the central shaft hole (3), and the baffle (5) is clearance-matched with the hole ribs (4).

2. The transmission assembly according to claim 1, characterized in that: The end surface of the hole rib (4) facing the baffle (5) is an inclined surface, the cross-sectional height of the hole rib (4) gradually decreases along the extension direction toward the receiving cavity, and the end surface of the baffle (5) facing the hole rib (4) has an inclined surface parallel to the inclined surface of the hole rib (4).

3. The transmission assembly according to claim 1, characterized in that: Also includes: A bolt (6), the shaft sleeve (2) is sleeved on the bolt (6), a nut (7) for fixing the shaft sleeve (2) is arranged on the bolt (6), and one end of the bolt (6) away from the nut head is fixedly connected to the belt transmission device.

4. The transmission assembly according to claim 3, characterized in that: A fixing washer (8) is sleeved on the bolt (6), and the fixing washer (8) is arranged on a side of the nut (7) away from the shaft sleeve (2).

5. The transmission assembly according to claim 1, characterized in that: The shaft sleeve (2) comprises a pair of matching pieces (9), a receiving cavity being configured on a side of the matching piece (9) away from the other matching piece (9), and the pair of matching pieces (9) are fitted to each other.

6. The transmission assembly according to claim 1, characterized in that: Both sides of the shaft sleeve (2) respectively have extension portions (10) extending in a direction away from the center of the circle and parallel to the direction of gravity; the extension portion (10) has a bending portion (11) bent toward the cam (1); one end of the baffle (5) is fixedly connected to the bending portion (11); the extension portion (10) cooperates with the shaft sleeve (2) and the bending portion (11) to form the receiving cavity.

7. The transmission assembly according to claim 6, characterized in that: There is a gap between the hole rib (4) and the extension portion (10).

8. The transmission assembly according to claim 2, characterized in that: The inclined surface angle of the hole rib (4) is 4°.

9. The transmission assembly according to claim 6, characterized in that: The bent portion (11) is parallel to the shaft sleeve (2).

10. The transmission assembly according to any one of claims 1 to 9, characterized in that: The cam (1) is a nylon wheel.

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