Rotary tensioning structure and harvester

Abstract

The utility model provides a rotary tensioning structure and a harvester, and relates to the technical field of agricultural machinery, the rotary tensioning structure comprises a rotating seat, a rotating shaft, a locking piece and a tensioning wheel; the rotating seat is provided with rotating holes and adjusting holes, and the rotating holes and the adjusting holes are arranged at intervals; the rotating shaft is inserted into the rotating hole and used for being connected with the harvester, and the rotating seat can rotate with the rotating hole as the center; the locking piece is arranged in the adjusting hole and is used for being connected with the harvester to fix the rotating seat; the tensioning wheel is arranged on the rotating seat and located on one side of the rotating hole, and the tensioning wheel is used for being connected with a chain of the harvester; the axis of the rotating shaft is parallel to the axis of the tensioning wheel. The rotating seat rotates to drive the tensioning wheel to press the chain, the position of the rotating seat is locked through the locking piece, the rotating seat is fixed together through the locking piece and the rotating shaft, the bearing capacity is high, the rotating seat is not prone to skewing when the load is too large, and the situation that the whole machine performance is affected due to the fact that the chain falls off and is broken due to the too large load can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, and particularly relates to a rotary tensioning structure and a harvester. Background Art

[0002] At present, the chain tensioning methods of harvesters mainly include arranging multiple tensioning sprocket assemblies alternately left and right, and realizing the tensioning of the chain through the elastic force of the tensioning sprocket spring. Specifically, the tensioning sprocket of the left tensioning sprocket assembly presses the right side of the left chain to the right under the elastic force of the tensioning sprocket spring; similarly, the tensioning sprocket of the right tensioning sprocket assembly presses the left side of the right chain to the left under the elastic force of the tensioning sprocket spring. This method can effectively maintain the tension of the chain and ensure the normal operation of the machine.

[0003] However, most of the chain tensioning wheels on harvesting machinery are fixed on one side, with poor stability. They may become loose during operation, or will be skewed when the load is too large, resulting in the chain falling off or breaking, affecting the performance of the whole machine. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a rotary tensioning structure to alleviate the technical problems of poor stability in the prior art, which may become loose during operation, or will be skewed when the load is too large, resulting in the chain falling off or breaking, affecting the performance of the whole machine.

[0005] The utility model provides a rotary tensioning structure, including: a rotating seat, a rotating shaft, a locking member and a tensioning wheel; a rotating hole and an adjusting hole are arranged on the rotating seat, and the rotating hole and the adjusting hole are arranged at intervals; the rotating shaft is inserted into the rotating hole and is used to connect the harvester, and the rotating seat can rotate around the rotating hole; the locking member is arranged in the adjusting hole, and the locking member is used to connect with the harvester to fix the rotating seat; the tensioning wheel is arranged on the rotating seat and is located on one side of the rotating hole, and the tensioning wheel is used to connect with the chain of the harvester; wherein, the axis of the rotating shaft is parallel to the axis of the tensioning wheel.

[0006] Further, the adjusting hole is an arc-shaped long hole; the center of the arc-shaped long hole coincides with the center of the rotating hole.

[0007] Further, the rotating hole, the arc-shaped long hole and the tensioning wheel are arranged in a triangular structure on the surface of the rotating seat; the arc-shaped long hole and the tensioning wheel are respectively located on both sides of the rotating hole.

[0008] Further, there are multiple adjusting holes; multiple adjusting holes are arranged at intervals in an arc shape, and the center of the arc coincides with the center of the rotating hole.

[0009] Furthermore, a pushing portion is provided at one end of the rotating seat; the pushing portion is provided at a side of the rotating seat away from the tensioning wheel.

[0010] Furthermore, the pushing part is a push plate; the push plate is perpendicular to a side of the swivel seat where the tensioning wheel is provided.

[0011] Furthermore, a support assembly is provided on the swivel seat; the support assembly includes a support frame and a bearing; the tensioning wheel is a sprocket, the sprocket is provided on the support frame and is cooperatively connected with the bearing, and the sprocket can be hinged to the chain of the harvester.

[0012] Furthermore, the support assembly also includes a gasket and an elastic retaining ring; the gasket and the elastic retaining ring are both arranged on the support frame and adapted to the sprocket.

[0013] Furthermore, the rotating seat is a flat plate structure; one side of the flat plate structure is a mounting surface, and the rotating shaft, the locking member and the tensioning wheel are all arranged on the mounting surface.

[0014] The utility model also aims to provide a harvester, comprising a main body, a chain and a rotary tensioning structure; the chain is arranged on the main body; the rotary tensioning structure is arranged on the main body, and the tensioning wheel of the rotary tensioning structure is connected to the chain.

[0015] Beneficial effects:

[0016] The rotary tensioning structure provided by the utility model comprises a swivel seat, a rotating shaft, a locking piece and a tensioning wheel; a swivel hole and an adjusting hole are arranged on the swivel seat, and the swivel hole and the adjusting hole are arranged at intervals; the swivel shaft is inserted into the swivel hole and is used to connect the harvester, and the swivel seat can rotate around the swivel hole as the center; the locking piece is arranged in the adjusting hole, and the locking piece is used to connect with the harvester to fix the swivel seat; the tensioning wheel is arranged on the swivel seat and located on one side of the swivel hole, and the tensioning wheel is used to connect with the chain of the harvester; wherein the axis of the swivel shaft and the axis of the tensioning wheel are parallel.

[0017] Specifically, the swivel seat provided by the utility model cooperates with the rotating shaft to achieve a rotational connection with the harvester, and the tensioning wheel is continuously connected to the chain. During the movement of the chain, the tensioning wheel can rotate with the chain and will not affect the normal transmission of the chain. When the chain needs to be tensioned, the swivel seat is rotated along the rotating shaft so that the tensioning wheel can press the chain to tighten the chain. The chain is then inserted into the adjustment hole through the locking piece and hung on the harvester to keep the swivel seat in this position, so that the tensioning wheel can continue to press the chain to achieve chain tensioning. The utility model drives the tensioning wheel to press the chain through the rotation of the swivel seat, and locks the position of the swivel seat through the locking piece. The swivel seat is fixed by the locking piece and the rotating shaft together, has a high load-bearing capacity, and is not easy to tilt when the load is too large. It can avoid the chain from falling off or breaking due to excessive load, which affects the performance of the entire machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Structural schematic diagram of the rotary tensioning structure provided by an embodiment of the present invention;

[0020] Figure 2 Structural schematic diagram of the turntable of the rotary tensioning structure provided by an embodiment of the present invention;

[0021] Figure 3 Schematic diagram of the cooperation relationship between the rotary tensioning structure and the chain provided by an embodiment of the present invention.

[0022] Icon:

[0023] 100 - turntable; 110 - rotation hole; 120 - adjustment hole; 130 - pushing part; 140 - support assembly;

[0024] 200 - rotating shaft;

[0025] 300 - locking part;

[0026] 400 - tensioning wheel. Specific embodiments

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the present invention to be protected, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0029] It should be noted that: similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this utility model is customarily placed during use. It is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0031] In addition, the terms "horizontal", "vertical", etc. do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0032] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "coupled" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] The following further describes the present utility model in detail through specific embodiments in conjunction with the drawings.

[0034] Refer to Figure 1 、 Figure 2 In this embodiment, the provided rotation tensioning structure includes a turntable 100, a rotating shaft 200, a locking member 300, and a tensioning wheel 400.

[0035] Among them, a rotating hole 110 and an adjusting hole 120 are provided on the turntable 100, and the rotating hole 110 and the adjusting hole 120 are arranged at intervals. The rotating shaft 200 is inserted into the rotating hole 110 and is used to connect the harvester, and the turntable 100 can rotate around the rotating hole 110 as the center. The locking member 300 is arranged in the adjusting hole 120, and the locking member 300 is used to connect with the harvester to fix the turntable 100. The tensioning wheel 400 is arranged on the turntable 100 and is located on one side of the rotating hole 110, and the tensioning wheel 400 is used to connect with the chain of the harvester.

[0036] Moreover, it should be noted that the axis of the rotating shaft 200 and the axis of the tensioning wheel 400 are parallel.

[0037] Specifically, in this embodiment, the swivel base 100 cooperates with the rotating shaft 200 to achieve rotational connection with the harvester. The tension pulley 400 is continuously in contact with the chain. During the movement of the chain, the tension pulley 400 can rotate along with the chain without affecting the normal transmission of the chain.

[0038] When the chain needs to be tensioned, rotate the swivel base 100 along the rotating shaft 200 so that the tension pulley 400 can press against the chain to make the chain taut. Subsequently, insert the locking member 300 into the adjustment hole 120 and suspend it on the harvester to keep the swivel base 100 in this position, so that the tension pulley 400 can continuously press against the chain to achieve the tensioning of the chain.

[0039] In this embodiment, the rotation of the swivel base 100 drives the tension pulley 400 to press against the chain, and the position of the swivel base 100 is locked by the locking member 300. The swivel base 100 is fixed together by the locking member 300 and the rotating shaft 200, with high load-bearing capacity and not prone to skewing when the load is too large, which can avoid the chain from falling off or breaking due to excessive load and affecting the performance of the whole machine.

[0040] In this embodiment, the adjustment hole 120 is an arc-shaped long hole. The center of the arc-shaped long hole coincides with the center of the rotating hole 110.

[0041] Under this structure, the locking member 300 can be fixedly locked on the harvester. Specifically, the locking member 300 in this embodiment is a locking bolt. When adjusting the tension of the chain, disassemble or loosen the locking bolt to increase the gap between the nut of the locking bolt and the harvester, and the swivel base 100 can rotate. At this time, the operator can rotate the swivel base 100 to make the tension pulley 400 press against the chain. The locking bolt is in the arc-shaped long hole, and the arc-shaped long hole rotates with the swivel base 100 and moves relative to the locking bolt. After the position of the swivel base 100 is adjusted so that the tension pulley 400 can press against the chain, lock the locking bolt on the harvester again to press the swivel base 100 against the surface of the harvester, and the tension pulley 400 continuously presses against the chain to achieve the tensioning of the chain.

[0042] When the adjustment hole 120 is an arc-shaped long hole, only one screw hole for connecting the locking bolt needs to be provided on the harvester to adjust the tension of the chain, without the need to set up too many structures for connecting the locking bolt.

[0043] In this embodiment, the rotating hole 110, the arc-shaped long hole and the tension pulley 400 are arranged in a triangular structure on the surface of the swivel base 100. The arc-shaped long hole and the tension pulley 400 are respectively located on both sides of the rotating hole 110.

[0044] The stability of the triangular structure is very excellent. After the tension adjustment, the rotating shaft 200, the locking member 300 and the locking bolt are more stable in force.

[0045] As an implementable manner, a plurality of adjustment holes 120 may be provided. The plurality of adjustment holes 120 are arranged in an arc shape at intervals, and the arc shape coincides with the center of the rotating hole 110 .

[0046] Specifically, the adjustment hole 120 can be a plurality of circular holes, which are arranged at intervals in an arc shape. When the swivel seat 100 is rotated to tighten the chain, the plurality of circular holes can be switched to adjust the angle of the swivel seat 100 .

[0047] In this embodiment, a push portion 130 is disposed at one end of the rotating seat 100. The push portion 130 is disposed at a side of the rotating seat 100 away from the tensioning wheel 400.

[0048] The pushing portion 130 can facilitate a worker to push the rotating seat 100 to rotate.

[0049] In this embodiment, the pushing portion 130 is a push plate which is perpendicular to a side of the rotating base 100 where the tensioning wheel 400 is disposed.

[0050] Specifically, the push plate perpendicular to the rotating seat 100 can be pushed more easily, and it is more labor-saving when the rotating seat 100 needs to be pushed to rotate.

[0051] In this embodiment, a support assembly 140 is provided on the rotating seat 100. The support assembly 140 includes a support frame and a bearing. The tension wheel 400 is a sprocket wheel, which is provided on the support frame and connected with the bearing, and the sprocket wheel can be hinged with the chain of the harvester.

[0052] Specifically, the support assembly 140 in this embodiment is perpendicular to the side of the swivel seat 100 where the tensioning wheel 400 is provided. The tensioning wheel 400 uses a sprocket to ensure the linkage between the sprocket and the chain, avoiding slippage between the chain and the tensioning wheel 400, which causes wear on the surface of the tensioning wheel 400 and the chain.

[0053] In this embodiment, the support assembly 140 further includes a gasket and an elastic retaining ring. The gasket and the elastic retaining ring are both arranged on the support frame and matched with the sprocket.

[0054] The main function of the circlip is axial fixation, which is used to prevent the sprocket from moving upward. By providing axial resistance, the position of the sprocket is kept stable, thereby ensuring the normal operation of the mechanical parts. The gasket can be used as a buffer material to absorb impact energy and protect the structure of the sprocket. At the same time, during the assembly process, the gasket helps to fix the position of the sprocket and ensure assembly accuracy.

[0055] In this embodiment, the rotating seat 100 is a flat plate structure, one side of which is a mounting surface, and the rotating shaft 200, the locking member 300 and the tensioning wheel 400 are all arranged on the mounting surface.

[0056] The flat panel structure can provide a large installation area without taking up too much space.

[0057] The harvester provided in this embodiment includes a main body, a chain, and a provided rotary tensioning structure.

[0058] Among them, the chain is arranged on the main body. The rotary tensioning structure is arranged on the main body, and the tensioning wheel 400 of the rotary tensioning structure is connected to the chain.

[0059] Specifically, in this embodiment, the rotating shaft 200 of the rotary tensioning structure passes through the rotating hole 110 on the rotating seat 100 and is then tightened on the main body. The rotating seat 100 is matched with the rotating shaft 200 to achieve rotational connection with the harvester. Refer to Figure 3 , the tensioning wheel 400 continuously contacts the chain. During the movement of the chain, the tensioning wheel 400 can rotate following the chain, without affecting the normal transmission of the chain. When the chain needs to be tensioned, rotate the rotating seat 100 along the rotating shaft 200, so that the tensioning wheel 400 can move upward and rightward in the direction shown in the figure to press the chain, making the chain taut. Subsequently, insert the locking member 300 into the adjustment hole 120 and suspend it on the harvester to keep the rotating seat 100 in this position, so that the tensioning wheel 400 can continuously press the chain to achieve the tensioning of the chain.

[0060] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A rotary tensioning structure, characterized in that: include: A rotating seat (100), a rotating shaft (200), a locking member (300) and a tensioning wheel (400); The rotating seat (100) is provided with a rotating hole (110) and an adjusting hole (120), and the rotating hole (110) and the adjusting hole (120) are arranged at intervals; The rotating shaft (200) is inserted into the rotating hole (110) and is used to connect to the harvester, and the rotating seat (100) can rotate around the rotating hole (110); The locking member (300) is arranged in the adjustment hole (120), and the locking member (300) is used to connect with the harvester to fix the rotating seat (100); The tension wheel (400) is arranged on the rotating seat (100) and is located on one side of the rotating hole (110), and the tension wheel (400) is used to be connected to the chain of the harvester; Wherein, the axis of the rotating shaft (200) and the axis of the tensioning wheel (400) are parallel.

2. The rotary tensioning structure according to claim 1, characterized in that: The adjustment hole (120) is an arc-shaped long hole; The center of the arc-shaped long hole coincides with the center of the rotating hole (110).

3. The rotary tensioning structure according to claim 2, characterized in that: The rotating hole (110), the arc-shaped long hole and the tensioning wheel (400) are arranged in a triangular structure on the surface of the rotating seat (100); The arc-shaped long hole and the tensioning wheel (400) are respectively located on two sides of the rotating hole (110).

4. The rotary tensioning structure according to claim 1, characterized in that: There are a plurality of adjustment holes (120); The plurality of adjustment holes (120) are arranged at intervals in an arc shape, and the circle of the arc coincides with the center of the rotating hole (110).

5. The rotary tensioning structure according to claim 1, characterized in that: One end of the rotating seat (100) is provided with a pushing portion (130); The pushing portion (130) is arranged on a side of the rotating seat (100) away from the tensioning wheel (400).

6. The rotary tensioning structure according to claim 5, characterized in that: The pushing portion (130) is a pushing plate; The push plate is perpendicular to a side of the rotating seat (100) on which the tensioning wheel (400) is provided.

7. The rotary tensioning structure according to claim 1, characterized in that: The rotating seat (100) is provided with a supporting assembly (140); The support assembly (140) comprises a support frame and a bearing; The tensioning wheel (400) is a sprocket, which is arranged on the support frame and is cooperatively connected with the bearing, and the sprocket can be hinged to the chain of the harvester.

8. The rotary tensioning structure according to claim 7, characterized in that: The support assembly (140) also includes a gasket and an elastic retaining ring; The gasket and the elastic retaining ring are both arranged on the supporting frame and matched with the sprocket.

9. The rotary tensioning structure according to any one of claims 1 to 8, characterized in that: The transfer seat (100) is a flat plate structure; One side of the flat plate structure is a mounting surface, and the rotating shaft (200), the locking member (300) and the tensioning wheel (400) are all arranged on the mounting surface.

10. A harvester, characterized in that: It comprises a main body, a chain and a rotating tensioning structure as claimed in any one of claims 1 to 9; The chain is arranged on the main body; The rotary tensioning structure is arranged on the main body, and the tensioning wheel (400) of the rotary tensioning structure is connected to the chain.

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