Double-chain-wheel coupler structure, transmission equipment and harvester

Abstract

The utility model relates to a double-chain-wheel coupler structure, transmission equipment and a harvester, the coupler structure comprises two chain wheels, a duplex chain, two hoops and two positioning assemblies, the two chain wheels are coaxially distributed and are connected through the duplex chain; the two hoops are coaxially, oppositely and fixedly connected to the sides, away from each other, of the two chain wheels correspondingly, and the two positioning assemblies are installed on the two hoops correspondingly and used for fixing the two hoops to the opposite ends of the input shaft and the output shaft correspondingly. The utility model has the beneficial effects that the structure is simple, the design is reasonable, and the double-hoop and inner involute spline structure is adopted, so that the transmission capacity is improved, and the impact alternating load resistance is improved at the same time; meanwhile, due to the application of the double hoops, the deformation amount of the chain wheel is relatively uniform, the stress of the matched shaft is uniform, and the impact resistance of the coupler and the shaft is further improved; in addition, an involute spline is adopted in an inner hole of the coupler, the involute spline is in tooth side fit, the spline is evenly stressed, and the reliability of the coupler is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of couplings, in particular to a double-sprocket coupling structure, transmission equipment and a harvester. Background Art

[0002] Harvesters are commonly used equipment in agriculture. Current harvesters have the following defects:

[0003] (1) The roller chain coupling currently used in harvesting machinery has no positioning structure or adopts double top screw positioning. Under the condition of large load, torque change and large impact load, the sprocket will move axially, resulting in sprocket or shaft rolling key and wear failure;

[0004] (2) At present, the roller chain coupling is connected to the shaft through a single flat key or a rectangular spline, which has a small load transmission and poor impact resistance;

[0005] (3) The flat key structure has a sudden change in cross section, which leads to stress concentration and is prone to shaft fracture at the keyway. Due to the processing technology of the flat key, the top of the keyway is sharp and is not compatible with the mating hub.

[0006] Fatigue notches are easily generated at the contact point, leading to fracture. Utility Model Content

[0007] The utility model provides a double-sprocket coupling structure, transmission equipment and a harvester, aiming to solve the problems in the prior art.

[0008] The technical solution of the utility model to solve the above technical problems is as follows:

[0009] A double-sprocket coupling structure comprises two sprockets, a double-row chain, two hoops and two positioning assemblies. The two sprockets are coaxially distributed and connected by the double-row chain; the two hoops are coaxially relatively fixedly connected to the sides of the two sprockets that are away from each other, and the two positioning assemblies are respectively installed on the two hoops and are respectively used to fix the two hoops on the opposite ends of the input shaft and the output shaft.

[0010] The beneficial effects of the utility model are as follows: during use, the power input from the input shaft is transmitted to the output shaft via two sprockets and a double-row chain, thereby realizing power transmission;

[0011] In addition, the two sprockets are connected by a double-row chain, which has a simple structure and convenient power transmission.

[0012] The utility model has a simple structure and a reasonable design. It adopts a double clamp structure to improve the transmission capacity while enhancing the ability to resist impact alternating loads. At the same time, the application of the double clamps makes the deformation of the sprocket relatively uniform, and the force on the shaft is uniform, further improving the impact resistance of the coupling and the shaft.

[0013] On the basis of the above technical solution, the present invention can also be improved as follows.

[0014] Furthermore, each of the positioning components includes at least one fastening bolt, each of the clamps is provided with at least one notch corresponding to the fastening bolt, and the connections at both ends of each fastening bolt correspond to the two sides of the notch.

[0015] The beneficial effects of adopting the above further scheme are simple structure, reasonable design, setting fastening bolts to ensure reliable axial limitation of the clamp and sprocket, relatively uniform deformation of the sprocket, and uniform force on the matching shaft, further improving the impact resistance of the coupling and the shaft.

[0016] Furthermore, each of the clamps is provided with a plurality of notches evenly spaced apart along its circumference, and each of the positioning assemblies includes a plurality of fastening bolts, which are respectively and correspondingly installed at the plurality of notches.

[0017] The beneficial effect of adopting the above further scheme is that the number of fastening bolts is set reasonably, which further ensures that the axial limit of the clamp and the sprocket is reliable, the deformation of the sprocket is relatively uniform, and the force on the matching shaft is uniform, further improving the impact resistance of the coupling and the shaft.

[0018] Furthermore, each of the clamps is relatively fixedly mounted with a pair of connection seats at positions on both sides of each of the notches, and both ends of each of the fastening bolts are connected to the pair of connection seats.

[0019] The beneficial effects of adopting the above further solution are simple structure, reasonable arrangement of each pair of connecting sockets, and convenient assembly.

[0020] Furthermore, each pair of the connecting seats are respectively in the form of rectangular blocks, and are provided with through holes for the corresponding fastening bolts to pass through.

[0021] The beneficial effect of adopting the above further solution is that the shape of each pair of connecting seats is reasonably designed, which is convenient for assembling the fastening bolts.

[0022] Furthermore, the end surface of one end of each pair of the connecting seats connected to the corresponding clamps is in an arc-shaped structure, and is tightly attached to and fixedly connected to the corresponding clamps respectively.

[0023] The beneficial effect of adopting the above further solution is that the shape of each pair of connecting seats is reasonably designed, and they can be easily and stably assembled on the corresponding clamps.

[0024] Furthermore, splines are fixedly installed in the two sprockets respectively, and the two splines are used to connect the input shaft and the output shaft respectively.

[0025] The beneficial effects of adopting the above-mentioned further scheme are simple structure and reasonable design. The double clamp + internal involute spline structure is adopted to improve the transmission capacity while improving the impact resistance of alternating loads. At the same time, the application of double clamps makes the deformation of the sprocket relatively uniform, and the force on the matching shaft is uniform, which further improves the impact resistance of the coupling and the shaft. In addition, the inner hole of the coupling adopts involute spline, and the involute spline is matched with the tooth side, and the spline is evenly stressed, which is beneficial to improving the reliability of the shaft.

[0026] Furthermore, the two splines are respectively involute splines.

[0027] The beneficial effects of adopting the above further scheme are that the involute spline has a large number of teeth, thick tooth ends and tooth roots, strong load-bearing capacity, easy automatic centering, and high installation accuracy; at the same time, the spline minor diameter is large under the same overall dimensions, which is beneficial to increase the rigidity of the shaft.

[0028] The utility model also relates to a transmission device, comprising the double sprocket coupling structure as described above.

[0029] The beneficial effect of adopting the above-mentioned further scheme is that the utility model also provides a transmission device, which has a simple structure and a reasonable design. It adopts a double clamp + internal involute spline structure to improve the transmission capacity while improving the impact resistance of alternating loads; at the same time, the application of double clamps makes the sprocket deformation relatively uniform, and the force on the matching shaft is uniform, which further improves the impact resistance of the coupling and the shaft; in addition, the inner hole of the coupling adopts an involute spline, and the involute spline is matched with the tooth side, and the spline is evenly stressed, which is beneficial to improving the reliability of the shaft.

[0030] The utility model also relates to a harvester, comprising the transmission device as described above.

[0031] The beneficial effect of adopting the above-mentioned further scheme is that the utility model also provides a harvester with a simple structure and reasonable design. It adopts a double clamp + internal involute spline structure to improve the transmission capacity while improving the impact resistance of alternating loads; at the same time, the application of double clamps makes the sprocket deformation relatively uniform, and the force on the matching shaft is uniform, which further improves the impact resistance of the coupling and the shaft; in addition, the inner hole of the coupling adopts an involute spline, and the involute spline is matched with the tooth side, and the spline is evenly stressed, which is beneficial to improving the reliability of the shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the coupling in the utility model;

[0033] Figure 2 It is a structural schematic diagram of a single sprocket and a clamp in the utility model;

[0034] Figure 3 It is a partial cross-sectional view of a single sprocket in the utility model;

[0035] Figure 4 It is a structural schematic diagram of the transmission equipment in the utility model.

[0036] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0037] 1. Sprocket; 2. Double-row chain; 3. Hoop; 4. Fastening bolts; 5. Notch; 6. Connecting seat; 7. Spline; 8. Input shaft; 9. Output shaft. DETAILED DESCRIPTION

[0038] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0039] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0040] 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 an indirect connection 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 by specific circumstances.

[0041] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0042] Example 1

[0043] like Figures 1 to 4As shown, this embodiment provides a double-sprocket coupling structure, including two sprockets 1, a double-row chain 2, two hoops 3 and two positioning assemblies. The two sprockets 1 are coaxially distributed and connected by the double-row chain 2; the two hoops 3 are coaxially relatively fixedly connected to the sides of the two sprockets 1 away from each other, and the two positioning assemblies are respectively installed on the two hoops 3, and are respectively used to fix the two hoops 3 on the opposite ends of the input shaft 8 and the output shaft 9.

[0044] During use, the power input from the input shaft 8 is transmitted to the output shaft 9 through the two sprockets 1 and the double-row chain 2, thus realizing the power transmission;

[0045] In addition, the two sprockets 1 are connected by a double-row chain 2, which has a simple structure and convenient power transmission.

[0046] Preferably, in this embodiment, the two clamps 3 are cylindrical structures, respectively, and are clamped on the input shaft 8 and the output shaft 9 respectively.

[0047] This embodiment has a simple structure and a reasonable design. It adopts a double clamp structure to improve the transmission capacity while enhancing the ability to resist impact alternating loads. At the same time, the application of double clamps makes the deformation of the sprocket relatively uniform, and the force on the shaft is uniform, further improving the impact resistance of the coupling and the shaft.

[0048] Example 2

[0049] Based on Example 1, in this embodiment, each of the positioning components includes at least one fastening bolt 4, each of the clamps 3 is provided with at least one notch 5 corresponding to the fastening bolt 4, and each of the fastening bolts 4 is connected to two sides of the corresponding notch 5.

[0050] This solution has a simple structure and a reasonable design. The fastening bolts 4 are provided to ensure reliable axial limitation of the clamp 3 and the sprocket 1. The deformation of the sprocket 1 is relatively uniform. At the same time, the force on the matching shaft is uniform, further improving the impact resistance of the coupling and the shaft.

[0051] Example 3

[0052] On the basis of Example 2, in this embodiment, each of the clamps 3 is provided with a plurality of notches 5 evenly spaced along its circumference, and each of the positioning components includes a plurality of fastening bolts 4, which are respectively installed at the plurality of notches 5.

[0053] The number of fastening bolts 4 is reasonably set, which further ensures that the axial limit of the clamp 3 and the sprocket 1 is reliable, the deformation of the sprocket 1 is relatively uniform, and the force on the matching shaft is uniform, further improving the impact resistance of the coupling and the shaft.

[0054] Preferably, in this embodiment, the plurality of notches 5 are preferably respectively long strip-shaped notches, which respectively extend along the axial direction of the corresponding clamp 3 .

[0055] In addition, each fastening bolt 4 extends from one side to the other side of the corresponding notch 5 .

[0056] Example 4

[0057] On the basis of any one of Examples 2 to 3, in this embodiment, each clamp 3 is relatively fixedly mounted with a pair of connecting seats 6 at the positions on both sides of each notch 5, and both ends of each fastening bolt 4 are connected to the pair of connecting seats 6.

[0058] This solution has a simple structure, each pair of connecting seats 6 is reasonably arranged, and is easy to assemble.

[0059] Based on the above scheme, Figure 1 Only a pair of connecting seats 6 are arranged on both sides of each notch 5, without other structures.

[0060] Example 5

[0061] On the basis of Embodiment 4, in this embodiment, each pair of the connection seats 6 are respectively in a rectangular block structure, and are provided with through holes for the corresponding fastening bolts 4 to pass through.

[0062] The shape of each pair of connecting seats 6 is reasonably designed to facilitate assembly of the fastening bolts 4 .

[0063] Example 6

[0064] On the basis of Embodiment 5, in this embodiment, the end surface of one end of each pair of the connecting seats 6 connected to the corresponding clamp 3 is an arc-shaped structure, and is tightly attached to and fixedly connected to the corresponding clamp 3 respectively.

[0065] The shape of each pair of connecting seats 6 is reasonably designed, so that they can be easily and stably assembled on the corresponding clamps 3 .

[0066] Example 7

[0067] On the basis of the above embodiments, in this embodiment, splines 7 are fixedly installed in the two sprockets 1 respectively, and the two splines 7 are used to connect the input shaft 8 and the output shaft 9 respectively.

[0068] This solution has a simple structure and reasonable design. It adopts a double clamp + internal involute spline structure to improve the transmission capacity while enhancing the ability to resist impact alternating loads. At the same time, the application of double clamps makes the sprocket deformation relatively uniform, and the force on the matching shaft is uniform, further improving the impact resistance of the coupling and the shaft. In addition, the inner hole of the coupling adopts an involute spline, and the involute spline is matched with the tooth side, so the spline is evenly stressed, which is beneficial to improving the reliability of the shaft.

[0069] Example 8

[0070] On the basis of Embodiment 7, in this embodiment, the two splines 7 are respectively involute splines.

[0071] Involute splines have a large number of teeth, thick tooth ends and tooth roots, strong load-bearing capacity, easy automatic centering, and high installation accuracy; at the same time, the spline minor diameter is large under the same overall dimensions, which is beneficial to increase the rigidity of the shaft.

[0072] Alternatively, the spline 7 may also be a common spline.

[0073] Alternatively, the two sprockets 1 may also be directly welded to the input shaft 8 and the output shaft 9 .

[0074] Example 9

[0075] On the basis of the above embodiments, this embodiment further provides a transmission device, including the double sprocket 1 coupling structure as described above.

[0076] The present embodiment also provides a transmission device, which has a simple structure and a reasonable design. It adopts a double clamp + internal involute spline structure, which improves the transmission capacity while improving the impact resistance of alternating loads; at the same time, the application of double clamps makes the sprocket deformation relatively uniform, and the force on the matching shaft is uniform, further improving the impact resistance of the coupling and the shaft; in addition, the inner hole of the coupling adopts an involute spline, the involute spline is matched with the tooth side, and the spline is evenly stressed, which is beneficial to improving the reliability of the shaft.

[0077] Example 10

[0078] Based on Example 9, this example also provides a harvester, including the transmission device as described above.

[0079] The present embodiment also provides a harvester with a simple structure and reasonable design. It adopts a double clamp + internal involute spline structure to improve the transmission capacity while improving the impact resistance of alternating loads. At the same time, the application of double clamps makes the deformation of the sprocket relatively uniform, and the force on the matching shaft is uniform, which further improves the impact resistance of the coupling and the shaft. In addition, the inner hole of the coupling adopts an involute spline, and the involute spline is matched with the tooth side, and the spline is evenly stressed, which is beneficial to improving the reliability of the shaft.

[0080] The working principle of the utility model is as follows:

[0081] During use, the power input from the input shaft 8 is transmitted to the output shaft 9 via the two sprockets 1 and the double-row chain 2, thereby realizing power transmission.

[0082] The advantages of the utility model are:

[0083] The double clamp + internal involute spline structure is adopted to improve the transmission capacity and the impact resistance of alternating loads. At the same time, the application of double clamps makes the deformation of the sprocket relatively uniform, and the force on the matching shaft is uniform, which further improves the impact resistance of the coupling and the shaft. In addition, the inner hole of the coupling adopts involute spline, which is matched with the tooth side, and the spline is evenly stressed, which is beneficial to improve the reliability of the shaft.

[0084] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0085] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A double sprocket coupling structure, characterized in that: The invention comprises two sprockets (1), a double-row chain (2), two clamps (3) and two positioning assemblies. The two sprockets (1) are coaxially distributed and connected by the double-row chain (2); the two clamps (3) are coaxially relatively fixedly connected to the sides of the two sprockets (1) that are away from each other; the two positioning assemblies are respectively mounted on the two clamps (3) and are respectively used to fix the two clamps (3) to the opposite ends of the input shaft (8) and the output shaft (9).

2. The double sprocket coupling structure according to claim 1, characterized in that: Each of the positioning components comprises at least one fastening bolt (4), each of the clamps (3) is provided with at least one notch (5) corresponding one-to-one to the fastening bolt (4), and both ends of each of the fastening bolts (4) are connected to two sides corresponding to the notch (5).

3. The double sprocket coupling structure according to claim 2, characterized in that: Each of the clamps (3) is provided with a plurality of notches (5) at even intervals along its circumference, and each of the positioning components comprises a plurality of fastening bolts (4), and the plurality of fastening bolts (4) are respectively and correspondingly mounted at the plurality of notches (5).

4. The double sprocket coupling structure according to claim 2, characterized in that: A pair of connecting seats (6) are relatively fixedly mounted on each of the clamps (3) at locations corresponding to both sides of each of the notches (5), and both ends of each of the fastening bolts (4) are connected to the pair of connecting seats (6).

5. The double sprocket coupling structure according to claim 4, characterized in that: Each pair of the connecting seats (6) is a rectangular block structure, and is provided with through holes for the corresponding fastening bolts (4) to pass through.

6. The double sprocket coupling structure according to claim 5, characterized in that: The end surface of one end of each pair of the connecting seats (6) connected to the corresponding clamp (3) is in an arc-shaped structure, and is respectively tightly attached to and fixedly connected to the corresponding clamp (3).

7. The double sprocket coupling structure according to any one of claims 1 to 6, characterized in that: Splines (7) are fixedly installed in the two sprockets (1) respectively, and the two splines (7) are used to connect the input shaft (8) and the output shaft (9) respectively.

8. The double sprocket coupling structure according to claim 7, characterized in that: The two splines (7) are respectively involute splines.

9. A transmission device, characterized in that: It comprises a double sprocket coupling structure as described in any one of claims 1 to 8.

10. A harvester, characterized in that: Comprising the transmission device as claimed in claim 9.

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