Split type grain unloading transmission case

Abstract

The utility model relates to the technical field of combine harvesters, in particular to a split type grain unloading transmission case. The split type grain unloading transmission box comprises a box body and a transmission shaft. The box body comprises an upper cover, a middle cavity and a base; the upper cover, the middle cavity and the base are detachably connected in sequence; and the transmission shaft is arranged between the middle cavity and the upper cover. Compared with the prior art, the utility model has the beneficial effects that the box body is divided into the upper cover, the middle cavity and the base, so that the box body is convenient to maintain.

Description

Technical Field

[0001] This utility model relates to the field of combine harvester technology, and in particular to a split-type grain unloading transmission box. Background Technology

[0002] The combine harvester's unloading power comes from the engine, which is connected to the unloading transmission box via a belt. The transmission box contains bevel gears with a certain speed ratio, which cause the power to change direction and speed, thereby driving the unloading auger.

[0003] The typical grain unloading transmission box consists of a single cast steel box and a cover, forming the external structure of the transmission box. This type of box has a simple structure, but it is inconvenient to maintain later. In addition, the box has a thin-walled structure and poor torsional resistance. When unloading is not smooth, the torque increases and is transmitted to the box, causing it to break. Utility Model Content

[0004] The purpose of this application is to provide a split-type grain unloading transmission box to solve the technical problem of inconvenient maintenance in the prior art.

[0005] This utility model provides a split-type grain unloading transmission box, which includes an input shaft, a transmission reversing structure, a box body, and a transmission shaft.

[0006] The enclosure includes a top cover, a central cavity, and a base;

[0007] The top cover, the middle cavity, and the base are detachably connected in sequence.

[0008] The drive shaft is disposed between the central cavity and the upper cover;

[0009] One end of the input shaft passes through the base and extends into the housing, and is connected to the drive shaft through the transmission reversing structure;

[0010] One end of the drive shaft is the output end.

[0011] In a preferred embodiment, the output terminal has a tooth clutch structure.

[0012] In a preferred embodiment, the drive shaft and the tooth clutch structure are detachably connected.

[0013] In a preferred embodiment, the detachable connection is a spline connection or a bolted connection.

[0014] In a preferred embodiment, the upper cover has a first connecting hole, the middle cavity has a second connecting hole, and the base has a third connecting hole;

[0015] The first connecting hole, the second connecting hole, and the third connecting hole are provided in a one-to-one correspondence;

[0016] After the connecting bolt passes through the first connecting hole, the second connecting hole and the third connecting hole in sequence, it is fixed by the fixing nut.

[0017] In a preferred embodiment, the number of the first connecting hole, the second connecting hole, and the third connecting hole are the same, each being at least three.

[0018] In a preferred embodiment, the base has a first connecting post, and the central cavity has a second connecting post;

[0019] The first connecting post and the second connecting post are respectively arranged to form a relatively long supporting connecting post;

[0020] The second connecting hole and the third connecting hole are respectively disposed on the first connecting post and the second connecting post, and the second connecting hole, the third connecting hole, the first connecting post, and the second connecting post are coaxially arranged.

[0021] In a preferred embodiment, the transmission reversing structure is a bevel gear transmission structure.

[0022] In a preferred embodiment, the top cover, the central cavity, and the base are all die-cast.

[0023] In a preferred embodiment, the upper cover, the central cavity, and the base are made of die-cast aluminum.

[0024] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0025] The enclosure is divided into three parts: the top cover, the middle cavity, and the base, and they are detachable, making it easy to maintain the enclosure. Attached Figure Description

[0026] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 A three-dimensional structural diagram of the split-type grain unloading transmission box provided for an embodiment of this utility model;

[0028] Figure 2 A three-dimensional structural schematic diagram of the split-type grain unloading transmission box provided in an embodiment of this utility model from another perspective;

[0029] Figure 3 Exploded view of the split-type grain unloading transmission box provided in an embodiment of this utility model;

[0030] Figure 4 A cross-sectional structural diagram of the split-type grain unloading transmission box provided in an embodiment of this utility model.

[0031] Reference numerals: 1-Top cover; 2-Central cavity; 3-Base; 4-Drive shaft; 5-Gear clutch structure; 6-Fixing bolt; 7-Input shaft; 8-Support connecting column; 9-End cover; 10-First connecting column; 11-Second connecting column; 12-Shift fork; 13-Driving bevel gear; 14-Driven bevel gear. Detailed Implementation

[0032] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0033] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. 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 claimed invention, but merely to illustrate selected embodiments of the invention.

[0034] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0035] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The following reference Figures 1 to 4 This invention describes a split-type grain unloading transmission box according to some embodiments of the present invention.

[0038] See Figures 1 to 4 As shown, this application provides a split-type grain unloading transmission box, which includes an input shaft 7, a transmission reversing structure, a box body, and a transmission shaft 4; the box body includes an upper cover 1, a central cavity 2, and a base 3; the upper cover 1, the central cavity 2, and the base 3 are detachably connected in sequence; the transmission shaft 4 is disposed between the central cavity 2 and the upper cover 1; one end of the input shaft 7 passes through the base and extends into the interior of the box body, and is connected to the transmission shaft through the transmission reversing structure; one end of the transmission shaft is an output end.

[0039] Specifically, in this embodiment, a complete box is divided into three parts. By setting the box into three parts, it is easy to disassemble the box according to the needs of different locations, so that the whole box does not need to be disassembled, which facilitates subsequent inspection and maintenance.

[0040] After the housing is divided into three parts, the drive shaft 4 is located between the upper cover 1 and the middle cavity 2, and the shift fork 12 is located between the middle cavity 2 and the base 3. When disassembling the drive shaft 4, it is not necessary to disassemble the shift fork 12, but only to open the upper cover 1. When it is necessary to disassemble the shift fork 12, it is not necessary to disassemble the entire housing, but only to remove the upper cover 1 and the middle cavity 2.

[0041] This design makes it easier and faster to inspect or maintain the internal and external connections of the enclosure.

[0042] In this embodiment, a transmission reversing structure is provided inside the housing, and the transmission reversing structure is connected to the transmission shaft 4.

[0043] In this embodiment, the base 3 of the housing has a transmission hole in the middle. The input shaft 7 is inserted into the internal cavity of the housing through the transmission hole. It is connected to the transmission shaft 4 through the transmission reversing structure. The rotational power is then transmitted to the pulley through the output end of the transmission shaft 4 to realize belt drive.

[0044] In a preferred embodiment, the output end of the drive shaft 4 has a toothed clutch structure 5.

[0045] In this embodiment, a half-clutch with a jaw clutch structure 5 is provided at the output end of the transmission shaft 4, and another half-clutch is provided at the shaft end of the central shaft of the unloading belt pulley. The two half-clutches cooperate to form a complete jaw clutch structure 5, so that when the grain box is opened for maintenance, it is not necessary to remove the unloading belt, making the operation more convenient and quick.

[0046] In a preferred embodiment, the drive shaft 4 and the tooth clutch structure 5 are detachably connected.

[0047] In this embodiment, the detachable connection allows the dental clutch structure 5 to be easily replaced and maintained after a failure.

[0048] In a preferred embodiment, the detachable connection is a spline connection or a bolted connection.

[0049] Specifically, in this embodiment, the tooth clutch structure 5 and the transmission shaft 4 are connected by a spline, which ensures the stability of the transmission and facilitates disassembly.

[0050] It should be noted that in this embodiment, the detachable connection is a spline connection, but it is not limited to spline connection. There are many other connection methods, such as snap-fit ​​or bolt connection. In other words, as long as a detachable connection between the drive shaft 4 and the half clutch of the jaw clutch structure 5 can be achieved, it is acceptable.

[0051] It should also be noted that in this embodiment, the connection between the jaw clutch structure 5 and the transmission shaft 4 is a detachable connection, but it can also be a non-detachable fixed connection, such as welding or riveting, as long as it can fix the half clutch in the jaw clutch structure 5 at the end of the transmission shaft 4, thereby driving the pulley to rotate.

[0052] In a preferred embodiment, the upper cover 1 has a first connecting hole, the middle cavity 2 has a second connecting hole, and the base 3 has a third connecting hole; the first connecting hole, the second connecting hole, and the third connecting hole are arranged in a one-to-one correspondence; the connecting bolt passes through the first connecting hole, the second connecting hole, and the third connecting hole in sequence, and is then fixed by a fixing nut.

[0053] In this embodiment, the first connecting hole, the second connecting hole, and the third connecting hole are coaxially arranged. After the connecting bolt passes through the first connecting hole, the second connecting hole, and the third connecting hole in sequence, it is threadedly connected to the fixing nut, thereby achieving the purpose of fixing the upper cover 1, the middle cavity 2, and the base 3.

[0054] Specifically, in this embodiment, the first connecting hole is located at the edge of the upper cover 1, the second connecting hole is located on the side wall of the middle cavity 2, and the third connecting hole is located on the side wall of the base 3.

[0055] In this embodiment, the first connecting hole, the second connecting hole, and the third connecting hole are all straight holes.

[0056] Understandably, both the first and third connecting holes can be countersunk, which allows the end of the bolt or the fixing nut to be recessed into the countersunk hole, thereby reducing the exposed parts. This not only increases the aesthetics but also reduces the chance of operators being injured by accidentally bumping into the exposed parts.

[0057] It is also understood that, in this embodiment, the first connecting hole can be set as a tapered hole to facilitate the insertion of the fixing bolt 6.

[0058] It is also understood that in this embodiment, the fixing bolt 6 passes through the first connecting hole, the second connecting hole and the third connecting hole in sequence. It can also be arranged in reverse, that is, the fixing bolt 6 passes through the third connecting hole, the second connecting hole and the first connecting hole in sequence.

[0059] In a preferred embodiment, the number of the first connecting hole, the second connecting hole, and the third connecting hole are the same, each being at least three.

[0060] In this embodiment, there are four first connecting holes, four second connecting holes, and four third connecting holes, which are respectively located at the four corners of the box.

[0061] It is understood that in this embodiment, the number of the first connecting hole, the second connecting hole and the third connecting hole are all four, but they are not limited to four. They can also be three, six, eight or even more, as long as they can be fixedly connected by multiple fixing bolts 6 to ensure the stability of the box.

[0062] In a preferred embodiment, the base 3 has a first connecting post 10, and the central cavity 2 has a second connecting post 11; the first connecting post 10 and the second connecting post 11 are correspondingly arranged to form a relatively long supporting connecting post 8; the second connecting hole and the third connecting hole are respectively arranged on the first connecting post 10 and the second connecting post 11, and the second connecting hole, the third connecting hole, the first connecting post 10, and the second connecting post 11 are coaxially arranged.

[0063] In this embodiment, after the first connecting post 10 and the second connecting post 11 are set one-to-one, a long supporting connecting post 8 is formed, which fixes the base 3 and the middle cavity 2 together. After the fixing bolt 6 passes through the first connecting hole, the second connecting hole and the third connecting hole, a fixed connection is formed, thereby achieving the effect of fixing the base 3, the middle cavity 2 and the top cover 1.

[0064] This configuration connects the base 3 and the central cavity 2 via an integral support column 8. The support column 8 has a large diameter and thick walls, which provides strong torsional resistance, reduces the risk of breakage between the base 3 and the central cavity 2, and improves safety and service life.

[0065] In a preferred embodiment, the transmission reversing structure is a bevel gear transmission structure.

[0066] Specifically, in this embodiment, a drive bevel gear 13 is provided inside the central cavity 2. The drive bevel gear 13 is coaxially and fixedly connected to one end of the input shaft 7, so that the rotation of the input shaft 7 can drive the drive bevel gear 13 to rotate.

[0067] Specifically, in this embodiment, the driven bevel gear 14 is disposed on the transmission shaft 4 and the driven bevel gear 14 and the output end are respectively located at opposite ends of the transmission shaft 4, thereby improving the balance of the transmission shaft 4 when it rotates.

[0068] More specifically, in this embodiment, the driven bevel gear 14 and the half-clutch are respectively disposed at opposite ends of the transmission shaft 4 to ensure the stability of force transmission.

[0069] In this embodiment, a driven bevel gear 14 is provided on one end of the drive shaft 4, and an end cover 9 is provided at the corresponding position on the middle cavity 2, which can effectively protect the inside of the box.

[0070] Specifically, in this embodiment, the end cap 9 can be as follows: Figure 4 As shown, it is divided into two parts. One part is integrated with the top cover 1, and the other part is integrated with the middle cavity 2. After the two parts are spliced ​​together to form a complete end cover 9, the inside of the box is effectively protected.

[0071] It should be noted that the end cap 9 can also be integrally set with the top cover 1 or integrally set with the middle cavity 2, as long as it can effectively protect the inside of the box.

[0072] In a preferred embodiment, the upper cover 1, the central cavity 2, and the base 3 are all die-cast.

[0073] Die casting is a precision casting method that uses high pressure to force molten metal into a complex-shaped metal mold.

[0074] Die castings have high dimensional accuracy, and compared to other casting processes, their castings have smooth surfaces, which can reduce or avoid secondary machining. They also have high production speed, high tensile strength, and can cast highly fluid metals.

[0075] By producing the top cover 1, the middle cavity 2, and the base 3 through die casting, the dimensional accuracy of each component can be guaranteed, thereby ensuring the connection accuracy, connection stability, and connection strength between the top cover 1, the middle cavity 2, and the base 3.

[0076] It is understood that in this embodiment, the upper cover 1, the middle cavity 2 and the base 3 are produced by die casting, but it is not limited to die casting. Other production processes can also be used, such as injection molding, forging, etc., as long as the dimensional accuracy, connection accuracy, connection stability and connection strength between the components can be guaranteed.

[0077] In a preferred embodiment, the upper cover 1, the central cavity 2, and the base 3 are made of die-cast aluminum.

[0078] In this embodiment, the upper cover 1, the middle cavity 2, and the base 3 are formed by die casting, and the material used is die-cast aluminum.

[0079] Die-cast aluminum specifically refers to aluminum products made using the die-casting process. It is a specific aluminum alloy mainly composed of aluminum, copper, silicon, magnesium, etc. Die-cast aluminum relies on die-casting technology to achieve rapid forming, which is low in cost and has high precision. Die-cast aluminum is known for its rapid forming, low cost and good surface finish.

[0080] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0081] The enclosure is divided into three parts: top cover 1, middle cavity 2, and base 3, which are detachable and connected to facilitate maintenance.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A split-type grain unloading transmission box, characterized in that, Includes input shaft, transmission reversing structure, housing and drive shaft; The enclosure includes a top cover, a central cavity, and a base; The top cover, the middle cavity, and the base are detachably connected in sequence. The drive shaft is disposed between the central cavity and the upper cover; One end of the input shaft passes through the base and extends into the housing, and is connected to the drive shaft through the transmission reversing structure; One end of the drive shaft is the output end.

2. The split-type grain unloading transmission box according to claim 1, characterized in that, The output end has a tooth clutch structure.

3. The split-type grain unloading transmission box according to claim 2, characterized in that, The drive shaft and the dental clutch structure are detachably connected.

4. The split-type grain unloading transmission box according to claim 3, characterized in that, The detachable connection is a spline connection or a bolt connection.

5. The split-type grain unloading transmission box according to claim 1, characterized in that, The upper cover has a first connecting hole, the middle cavity has a second connecting hole, and the base has a third connecting hole; The first connecting hole, the second connecting hole, and the third connecting hole are provided in a one-to-one correspondence. After the connecting bolt passes through the first connecting hole, the second connecting hole and the third connecting hole in sequence, it is fixed by the fixing nut.

6. The split-type grain unloading transmission box according to claim 5, characterized in that, The number of the first connecting hole, the second connecting hole, and the third connecting hole is the same, and there are at least three of each.

7. The split-type grain unloading transmission box according to claim 5, characterized in that, The base has a first connecting post, and the central cavity has a second connecting post; The first connecting post and the second connecting post are respectively arranged to form a relatively long supporting connecting post; The second connecting hole and the third connecting hole are respectively disposed on the first connecting post and the second connecting post, and the second connecting hole, the third connecting hole, the first connecting post, and the second connecting post are coaxially arranged.

8. The split-type grain unloading transmission box according to claim 1, characterized in that, The transmission reversing structure is a bevel gear transmission structure.

9. The split-type grain unloading transmission box according to any one of claims 1-8, characterized in that, The top cover, the central cavity, and the base are all die-cast.

10. The split-type grain unloading transmission box according to any one of claims 1-8, characterized in that, The upper cover, the central cavity, and the base are made of die-cast aluminum.

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