Multi-gear transmission case capable of being braked and harvester

Abstract

The utility model relates to the technical field of transmission cases, and discloses a braking multi-gear transmission case and a harvester. The multi-gear transmission case capable of being braked comprises a case body, an input flange plate, an input shaft assembly, a sliding gear, a gear shifting mechanism assembly, an output shaft, a plurality of variable gears and a brake, the multi-gear transmission case capable of being braked and the harvester break through the limitation of fixed output of a traditional transmission case, different output gears and neutral gear settings are introduced, and the transmission case capable of being braked and the harvester can be braked more stably. According to the transmission case, a driver can flexibly regulate and control the output speed of the transmission case directly through gear shifting operation in a cab according to actual operation requirements, the adaptability of the harvester under different crop types, soil conditions and operation stages is greatly improved, the operation complexity is effectively reduced, and the working efficiency and the operation safety coefficient are improved.

Description

Technical Field

[0001] The present application relates to the technical field of transmission boxes, for example, to a brakeable multi-speed transmission box and a harvester. Background Art

[0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

[0003] In the field of agricultural machinery, especially in the development of harvester technology, the transmission case, as a core component for power transmission and speed control, has a performance directly related to the overall machine's operating efficiency, ease of operation, and safety. Traditional harvester transmission cases generally adopt a fixed output mode, lacking the ability to flexibly adjust the output speed to suit different operating environments and crop conditions. This not only limits the harvester's adaptability to different operating conditions, but also increases the operator's operational difficulty and labor intensity, reducing operational efficiency and safety. Furthermore, traditional transmission case designs often neglect the integration of emergency braking functions, lacking a quick and effective means of stopping the machine, posing challenges to safety control during operation. Summary of the Invention

[0004] The present application provides a brakeable multi-gear transmission box and a harvester, which breaks through the limitation of the fixed output of the traditional transmission box and introduces different output gears and neutral settings, so that the driver can flexibly adjust the output speed of the transmission box directly through the gear shift operation in the cab according to the actual operation needs. It not only greatly improves the adaptability of the harvester under different crop types, soil conditions and operation stages, but also effectively reduces the complexity of operation, improves work efficiency and operation safety factor. A brake is added to the output end of the transmission box to realize the direct integration of the braking function. Through a simple pull rod operation, the driver can quickly brake the output end of the transmission box so that the machine can stop running immediately when needed. This not only enhances the emergency response capability of the harvester, but also provides a more reliable means for safety control during the operation process.

[0005] In a first aspect, a brakeable multi-speed transmission case and a harvester are provided, comprising: a case body, an input flange, an input shaft assembly, a sliding gear, a shift mechanism assembly, an output shaft, a plurality of speed change gears, and a brake;

[0006] The box body has a receiving cavity;

[0007] Input flange, set on the outside of the box;

[0008] The input shaft assembly is partially rotatably arranged in the housing and one end of the assembly is engaged with the input flange;

[0009] A sliding gear, slidingly arranged on the input shaft assembly;

[0010] The shift mechanism assembly is arranged on the box body and drives the sliding gear to slide;

[0011] The output shaft is rotatably arranged in the middle of the box, and its two ends extend out of the box;

[0012] A plurality of speed change gears are provided on the output shaft and can selectively mesh with the sliding gear;

[0013] The brake is arranged on the outside of the box and cooperates with either end of the output shaft.

[0014] In some embodiments, one end of the input shaft assembly is tightly connected to the housing via a bearing and an end cover.

[0015] In some embodiments, the plurality of speed gears include: a high-speed gear, a low-speed gear;

[0016] High-speed gear, located in the box;

[0017] The low-speed gear is arranged in the box body and is spaced apart from the high-speed gear.

[0018] In some embodiments, the shift mechanism assembly includes: a fork shaft, a shift fork, a positioning lock hole, and a self-locking spring pin;

[0019] The fork shaft is partially disposed in the box body and is in sliding engagement with the box body;

[0020] The shift fork is fixed on the fork shaft and drives the sliding gear to move and shift;

[0021] A positioning lock hole is provided on the fork shaft;

[0022] The self-locking spring pin is arranged on the box body and cooperates with the positioning lock hole to limit the position of the fork shaft.

[0023] In some embodiments, both ends of the fork shaft are sealed from the box body by fork shaft end covers and fork shaft blocking covers.

[0024] In some embodiments, a vent plug assembly is provided on the box body, and the vent plug assembly is connected to the box body through a long tube.

[0025] In a second aspect, a harvester is provided, comprising: a brakeable multi-speed transmission box as described in the first aspect or any one embodiment of the first aspect.

[0026] The brakeable multi-gear transmission box and harvester provided in this application can achieve the following technical effects:

[0027] This system breaks through the limitations of the traditional fixed output of the transmission case and introduces different output gears and neutral settings. This allows the driver to flexibly adjust the transmission case output speed directly through gear shifting operations in the cab according to actual operational needs. This not only significantly improves the harvester's adaptability to different crop types, soil conditions, and operating stages, but also effectively reduces operational complexity, improving work efficiency and operational safety. A brake has been added to the transmission case output end, enabling direct integration of the braking function. With a simple pull-lever operation, the driver can quickly brake the transmission case output end, allowing the machine to stop immediately when needed. This not only enhances the harvester's emergency response capabilities but also provides a more reliable means of safety control during operation.

[0028] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0030] Figure 1 This is a schematic cross-sectional view of the internal structure of a brakeable multi-speed transmission box provided by an embodiment of the present disclosure;

[0031] Figure 2 This is a right side structural schematic diagram of a brakeable multi-speed transmission box provided by an embodiment of the present disclosure;

[0032] Figure 3 This is a left-side structural schematic diagram of a brakeable multi-speed transmission box provided by an embodiment of the present disclosure;

[0033] Figure 4 is a schematic diagram of the structure of the vent plug provided in an embodiment of the present disclosure;

[0034] Reference numerals:

[0035] 1. Shift mechanism assembly; 11. Fork shaft; 12. Fork shaft plug; 13. Shift fork; 14. Self-locking spring pin; 15. Positioning lock hole; 16. Fork shaft end cover; 2. Input shaft assembly; 22. Sliding gear; 3. Output shaft; 32. Low-speed gear; 33. High-speed gear; 4. Brake; 5. Housing; 6. Breather plug; 61. Long tube; 7. Input flange. DETAILED DESCRIPTION

[0036] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0037] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate to describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0038] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in certain circumstances. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0039] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0040] Unless otherwise stated, the term "number" means two or more.

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0042] Combine Figure 1-4As shown, the embodiment of the present disclosure provides a brakeable multi-speed transmission box and a harvester, comprising: a box body 5, an input flange 7, an input shaft assembly 2, a sliding gear 22, a shift mechanism assembly 1, an output shaft 3, a plurality of speed change gears, and a brake 4;

[0043] The box body 5 has a receiving cavity;

[0044] The input flange 7 is arranged on the outside of the box body 5; the input flange 7 is used to connect to a power input mechanism, such as a motor.

[0045] The input shaft assembly 2 is partially rotatably arranged in the housing 5, and one end is matched with the input flange 7; the part of the input shaft assembly 2 extending out of the housing 5 is connected to the power input mechanism and is driven to rotate.

[0046] The sliding gear 22 is slidingly arranged on the input shaft assembly 2; the sliding gear 22 is provided with gears of different diameters corresponding to the speed gears, and an annular groove is provided between the gears. The annular groove cooperates with the shift mechanism assembly 1 and is driven to slide along the axial direction on the input shaft assembly 2. The surface of the input shaft is provided with an axial groove, and the sliding gear 22 cooperates with the groove to limit the sliding direction.

[0047] The shift mechanism assembly 1 is provided on the housing 5 and drives the sliding gear 22 to slide;

[0048] The output shaft 3 is rotatably arranged in the box 5 at the middle part and extends out of the box 5 at both ends;

[0049] A plurality of speed change gears are provided on the output shaft 3 and can selectively mesh with the sliding gear 22;

[0050] The brake 4 is arranged outside the box 5 and cooperates with either end of the output shaft 3. The structure and principle of the brake 4 are technical means well known to those skilled in the art and will not be described in detail here. The brake 4 mainly serves to stop the output shaft 3.

[0051] The brakeable multi-gear transmission case and harvester provided by the embodiment of the present disclosure break through the limitation of the fixed output of the traditional transmission case and introduce different output gears and neutral settings, so that the driver can flexibly adjust the output speed of the transmission case directly through the gear shifting operation in the cab according to the actual operation requirements. This not only greatly improves the adaptability of the harvester under different crop types, soil conditions and operation stages, but also effectively reduces the complexity of operation, improves work efficiency and operation safety factor. A brake 4 is added to the output end of the transmission case to realize the direct integration of the braking function. Through a simple pull rod operation, the driver can quickly brake the output end of the transmission case so that the machine can stop running immediately when needed. This not only enhances the emergency response capability of the harvester, but also provides a more reliable means for safety control during the operation process.

[0052] In some embodiments, the end of the input shaft assembly 2 opposite the input flange 7 is hermetically connected to the housing 5 via a bearing and an end cap. The bearing may be a deep groove ball bearing. The other end of the input shaft assembly 2 is hermetically connected to the housing 5 via a bearing and the input flange 7.

[0053] In some embodiments, the plurality of speed gears include: a high-speed gear 33, a low-speed gear 32;

[0054] The high-speed gear 33 is disposed in the housing 5 ; the diameter of the high-speed gear 33 is larger than that of the low-speed gear 32 .

[0055] The low-speed gear 32 is disposed within the housing 5 and spaced apart from the high-speed gear 33. The width of the spaced apart area is greater than the width of the sliding gear 22, so that the sliding gear 22 does not mesh with any speed gear when it moves into the spaced apart area, thereby making the spaced apart area a neutral area. When the sliding gear 22 moves into the spaced apart area, it enters neutral gear.

[0056] In some embodiments, the shift mechanism assembly 1 includes: a fork shaft 11, a shift fork 13, a positioning lock hole 15, and a self-locking spring pin 14;

[0057] The fork shaft is partially arranged in the box body 5 and slides with the box body 5; one end of the fork shaft is tightly connected to the box body 5 through the fork shaft blocking cover 12, and the other end is tightly connected to the box body 5 through the fork shaft end cover 16. The fork shaft and the fork shaft end cover 16 are tightly connected through a skeleton oil seal.

[0058] The shift fork 13 is fixedly arranged on the fork shaft and drives the sliding gear 22 to move and shift; the shift fork 13 cooperates with the annular groove on the sliding gear 22.

[0059] The positioning lock hole 15 is provided on the fork shaft; there are three positioning lock holes 15, corresponding to the high gear, neutral gear, and low gear, respectively, which are respectively provided at positions corresponding to the self-locking spring pin 14 when the fork shaft is in the gear position.

[0060] A self-locking spring pin 14, mounted on the housing 5, engages with a positioning lock hole 15 to define the position of the fork shaft. During a gear shift, the self-locking spring pin 14 is released, controlling the fork shaft to move to the desired gear position. The self-locking spring pin 14 is positioned perpendicular to the fork shaft and includes a spring that provides the force that forces the pin shaft toward the positioning lock hole 15.

[0061] The oil spray problem that may occur in the transmission box under high temperature or high pressure conditions not only affects the normal operation of the machine, but also poses a safety hazard to the surrounding environment and operators. In some embodiments, a vent plug 6 assembly is provided on the box body 5, and the vent plug 6 assembly is connected to the box body 5 via a long tube 61. To address the oil spray problem that may be faced by the transmission box, the present application adds a long tube 61 below the vent plug 6, effectively solving the risk of oil overflow caused by the increase in transmission box temperature, while also avoiding the problem of oil leakage from the vent plug 6 caused by oil splashing from the gear to the upper cover.

[0062] In a second aspect, a harvester is provided, comprising: a brakeable multi-speed transmission box as described in any one of the above embodiments. As a result of having the transmission box as described in any one of the above embodiments, the harvester has the technical effects of the transmission box.

[0063] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A brakeable multi-speed transmission box, characterized in that: include: The box body has a receiving cavity; Input flange, set on the outside of the box; The input shaft assembly is partially rotatably arranged in the housing and one end of the assembly is engaged with the input flange; A sliding gear, slidingly arranged on the input shaft assembly; The shift mechanism assembly is arranged on the box body and drives the sliding gear to slide; The output shaft is rotatably arranged in the middle of the box, and its two ends extend out of the box; A plurality of speed change gears are provided on the output shaft and can selectively mesh with the sliding gear; The brake is arranged on the outside of the box and cooperates with either end of the output shaft.

2. The brakeable multi-speed transmission box according to claim 1, characterized in that: One end of the input shaft assembly is tightly connected to the housing via a bearing and an end cover.

3. The brakeable multi-speed transmission box according to claim 1, characterized in that: The plurality of speed change gears include: High-speed gear, located in the box; The low-speed gear is arranged in the box body and is spaced apart from the high-speed gear.

4. The brakeable multi-speed transmission box according to claim 1, 2 or 3, characterized in that: The shift mechanism assembly comprises: The fork shaft is partially disposed in the box body and is in sliding engagement with the box body; The shift fork is fixed on the fork shaft and drives the sliding gear to move and shift; A positioning lock hole is provided on the fork shaft; The self-locking spring pin is arranged on the box body and cooperates with the positioning lock hole to limit the position of the fork shaft.

5. The brakeable multi-speed transmission box according to claim 4, characterized in that: The two ends of the fork shaft are sealed with the box body by a fork shaft end cover and a fork shaft blocking cover.

6. The brakeable multi-speed transmission box according to claim 1, characterized in that: A vent plug assembly is provided on the box body, and the vent plug assembly is connected to the box body through a long tube.

7. A harvester, characterized in that: It comprises a brakeable multi-speed transmission box as claimed in any one of claims 1 to 6.

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