Gearbox main shaft gear mounting structure

Abstract

The invention relates to a gearbox main shaft gear mounting structure which comprises a main shaft and a clutch inner ring arranged on the main shaft, one side of the clutch inner ring is sleeved with the main shaft and then limited through a limiting structure, and the other side of a clutch is provided with a half-moon ring assembly used for limiting the clutch inner ring. A half-moon ring limiting plate is arranged on the outer side of the half-moon ring assembly. The clutch inner ring installation limiting device is simple in structure and reasonable in design, axial displacement of the clutch inner ring is limited by arranging the half-moon plate assembly, the half-moon plate limiting plate is used for limiting radial displacement of the half-moon ring, and therefore installation limiting of the clutch inner ring is stably and rapidly achieved, the problem that normal work of a transmission is affected due to the fact that bolts are likely to disengage and fall into a gearbox is solved, and the service life of the transmission is prolonged. Meanwhile, installation is more convenient, time-saving and labor-saving.

Description

Technical Field

[0001] The invention relates to a gearbox main shaft gear position mounting structure. Background Art

[0002] The transmission is a mechanism used to change the speed and torque from the engine. It can fix or change the transmission ratio of the output shaft and the input shaft in stages, and is also called a gearbox. In the prior art, the inner ring of the clutch for gear shifting in the gearbox is limited on the main shaft of the gearbox by multiple bolts. After the main shaft has been working for a period of time, the bolts may fall into the gearbox. Since the gear pair in the gearbox rotates at a high speed, it is easy to cause damage to the gear pair, affecting the operation of the transmission. At the same time, it is time-consuming and labor-intensive to press the inner ring of the clutch with a pressure plate and tighten it with multiple bolts, which is inefficient. In addition, motors are arranged on both sides of the existing transmission, and the motor output shaft on each side is provided with two bearings, and the input shaft of the transmission is also provided with two bearings. When the motor output shaft is connected to the input shaft, the four bearings are prone to over-positioning connection, which is easy to cause shaft breakage. Summary of the invention

[0003] The present invention improves the above-mentioned problem, that is, the technical problem to be solved by the present invention is to provide a transmission main shaft gear position gear installation structure, which has a simple structure and is easy to use.

[0004] The invention is constructed as follows: it includes a main shaft and a clutch inner ring arranged on the main shaft. One side of the clutch inner ring is inserted into the main shaft and limited by a limiting structure. The other side of the clutch is provided with a half-moon ring assembly for limiting the clutch inner ring. A half-moon ring limiting plate is provided on the outer side of the half-moon ring assembly.

[0005] Furthermore, a side surface of the half-moon ring limiting plate is provided with an annular groove for accommodating the limiting half-moon ring assembly.

[0006] Furthermore, a bearing is arranged on the outer side of the half-moon ring limiting plate, and a clamping assembly for limiting the bearing is arranged on the outer side of the bearing.

[0007] Furthermore, a half-moon ring installation groove for installing the half-moon ring assembly is provided on the main shaft.

[0008] Furthermore, the half-moon ring assembly includes two half-moon rings, which are spliced ​​to form a ring body.

[0009] Furthermore, the limiting structure includes a limiting flange arranged on the main shaft, and the interior of the clutch inner ring is provided with a limiting groove for matching with the flange.

[0010] Furthermore, it also includes a transmission housing and motors arranged on both sides of the transmission housing, the output shaft of the motor is connected to the input shaft in the transmission housing, a motor rear bearing is arranged on the side of each motor output shaft away from the transmission housing, a gear bearing is arranged between the transmission output shaft and the transmission housing; the motor output shaft is connected to the input shaft of the transmission housing via a connecting spline.

[0011] Furthermore, the transmission housing is provided with a main lubrication oil channel, the gear bearing has a vertical oil channel, and the main lubrication oil channel is connected to the vertical oil channel; the transmission housing is provided with a housing oil guide groove, and the housing oil guide groove is connected to the main lubrication oil channel; the transmission housing is provided with a valve block mounting seat, and the valve block mounting seat and the housing oil guide groove are connected via a valve block oil guide hole; two gear bearings are provided between the transmission output shaft and the transmission housing, one of the gear bearings is a first gear bearing, and the other gear bearing is a second gear bearing.

[0012] Furthermore, the input shaft in the transmission housing is connected to the main shaft via a clutch assembly, thereby achieving gear shifting.

[0013] Furthermore, the installation method of the gearbox main shaft gear mounting structure is to insert one side of the inner ring of the clutch used for gear shifting into the main shaft and limit it, and then install a meniscus assembly and a meniscus limit plate on the other side of the inner ring of the clutch. The meniscus assembly is used to limit the axial displacement of the inner ring of the clutch, and the meniscus limit plate is used to limit the radial displacement of the meniscus ring.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention changes the existing method of bolt fastening of the clutch inner ring, and inserts one side of the clutch inner ring used for gear shifting into the main shaft and limits it, and then installs a meniscus assembly and a meniscus limit plate on the other side of the clutch inner ring. The meniscus assembly is used to limit the axial displacement of the clutch inner ring, and the meniscus limit plate is used to limit the radial displacement of the meniscus ring, thereby avoiding the problem that the bolts may fall into the gearbox after the main shaft has worked for a period of time, which may easily cause damage to the gear pair and affect the normal operation of the gearbox. At the same time, the installation is more convenient, and there is no need to lock multiple bolts along the annular portion of the clutch inner ring. (2) The transmission of the present invention cancels the front bearing of the motor in the motor, and the motor output shaft is connected to the input shaft of the transmission. The output shaft of the motor is connected to a rear bearing of the motor, and the input shaft of the transmission is connected to two gear bearings. The rear bearing of the motor and the two gear bearings form a three-point positioning, ensuring that after the output shaft of the motor on each side and the input shaft of the transmission are connected, the problem of over-positioning is avoided, which causes the output shaft of the motor and the input shaft of the transmission to be easily broken due to deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a cross-sectional view of the main shaft position of an embodiment of the present invention; Figure 2 An exploded view of the main shaft, the clutch inner ring, the half-moon ring assembly and the half-moon ring limit plate of an embodiment of the present invention; Figure 3 This is a cross-sectional view of the input shaft position of the gearbox housing according to an embodiment of the present invention. Figure 1 ; Figure 4 This is a cross-sectional view of the input shaft position of the gearbox housing according to an embodiment of the present invention. Figure 2 ; Figure 5 It is a schematic diagram of the position structure of the main oil passage and the vertical oil passage of the transmission housing according to an embodiment of the present invention; Figure 6 It is a partial cross-sectional view of an embodiment of the present invention. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Example 1: Figure 1-2 As shown, in an embodiment of the present invention, a gearbox main shaft gear mounting structure is provided, including a main shaft 2 arranged in a gearbox housing 1 and two clutch inner rings 3 arranged on the main shaft, one side of the clutch inner ring is inserted into the main shaft and limited by a limiting structure 4, and the other side of the clutch is provided with a half-moon ring assembly 5 for limiting the clutch inner ring, and a half-moon ring limiting plate 6 is provided on the outer side of the half-moon ring assembly.

[0018] The two clutch inner rings are used for gear shifting. The two clutch inner rings are arranged in opposite directions and are both limited by a half-moon ring assembly and a half-moon ring limit plate.

[0019] In the embodiment of the present invention, a side surface of the half-moon ring limiting plate is provided with an annular groove 601 for accommodating the limiting half-moon ring assembly.

[0020] In an embodiment of the present invention, a bearing 7 is arranged on the outer side of the half-moon ring limit plate, and a clamping component 8 for limiting the bearing is arranged on the outer side of the bearing; the clamping component can be a limiting clamping ring, and a limiting clamping groove 201 is provided on the main shaft to accommodate the limiting clamping ring.

[0021] In the embodiment of the present invention, a half-moon ring installation groove 202 for installing the half-moon ring assembly is provided on the main shaft, and the half-moon ring installation groove may be annular.

[0022] In the embodiment of the present invention, the half-moon ring assembly 5 includes two half-moon rings 501, which are spliced ​​to form a ring body.

[0023] In an embodiment of the present invention, the limiting structure 4 includes a limiting flange 401 arranged on the main shaft, and the interior of the clutch inner ring is provided with a limiting groove 402 for matching with the flange. When the clutch inner ring is installed on the main shaft, the limiting groove of the clutch inner ring abuts against the limiting flange to play a positioning role.

[0024] In an embodiment of the present invention, during installation, one side of the clutch inner ring used for gear shifting is inserted into the main shaft and limited, and then a meniscus assembly and a meniscus limiting plate are installed on the other side of the clutch inner ring. The meniscus assembly is used to limit the axial displacement of the clutch inner ring, and the meniscus limiting plate is used to limit the radial displacement of the meniscus ring.

[0025] Embodiment 2: Based on embodiment 1, Figure 3-4 As shown, in the embodiment of the present invention, it also includes a transmission housing 1 and two motors 9 arranged on both sides of the transmission housing. The two motors can be divided into a front motor and a rear motor. The output shaft 91 of the motor is connected to the input shaft 10 in the transmission housing. A motor rear bearing 92 is arranged on the side of each motor output shaft away from the transmission housing, and the motor front bearing on the side of the motor output shaft close to the transmission housing is cancelled. A gear bearing 11 is arranged between the transmission output shaft and the transmission housing.

[0026] The present invention eliminates the front motor bearing in the motor and leaves the rear motor bearing of the motor. A rear motor bearing on the output shaft of the motor and two gear bearings on the input shaft of the transmission form a three-point positioning. The three points form a straight line. While ensuring the connection, the output shaft of the motor on each side and the input shaft of the transmission are connected, avoiding the problem of over-positioning, which causes the output shaft of the motor and the input shaft of the transmission to be easily broken.

[0027] In the embodiment of the present invention, the motor output shaft is connected to the input shaft of the transmission housing via a connecting spline 94 .

[0028] In the embodiment of the present invention, the motor includes a motor housing 93, and the motor rear bearing is arranged in the motor housing.

[0029] In the embodiment of the present invention, Figure 5 As shown, the transmission housing is provided with a main lubricating oil passage 21, the gear bearing is provided with a vertical oil passage 12, and the main lubricating oil passage is connected to the vertical oil passage.

[0030] In the embodiment of the present invention, the transmission housing is provided with a housing oil guide groove 13, which is connected to the main lubrication oil passage; the oil is introduced from the valve block through the transmission housing through the main lubrication oil passage to the vertical oil passage of the bearing.

[0031] In the embodiment of the present invention, a valve block mounting seat 14 is provided on the transmission housing, and the valve block mounting seat is connected to the housing oil guide groove via a valve block oil guide hole 15 .

[0032] In the embodiment of the present invention, two gear bearings are arranged between the transmission output shaft and the transmission housing, one of the gear bearings is a first gear bearing 111 , and the other gear bearing is a second gear bearing 112 .

[0033] Lubrication is achieved by inputting oil into the interior of the gear bearing through the housing oil guide groove, the main lubrication oil passage, and the vertical oil passage.

[0034] Embodiment 3: Based on embodiment 2, Figure 6 As shown, in the embodiment of the present invention, the input shaft in the transmission case is connected to the main shaft via a clutch assembly, thereby realizing gear shifting. The clutch assembly includes two clutch outer rings 16, two clutch inner rings 3 arranged on the main shaft, two friction plate groups 17 and a shift piston 18. Each clutch outer ring, clutch inner ring and friction plate group form a group. A gear pair 19 for gear II and a gear pair 20 for gear I are arranged between the main shaft and the clutch outer ring. The gear shifting of the transmission is realized by moving the shift piston. The input shaft of the transmission inputs power, and the output shaft of the transmission outputs it.

[0035] Unless otherwise stated, any technical solution disclosed in the present invention disclosed above, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range, and any technician in the field should understand that the preferred numerical range is only a numerical value with a more obvious technical effect or representative value among many implementable numerical values. Since there are too many numerical values ​​to be exhaustive, the present invention discloses some numerical values ​​to illustrate the technical solution of the present invention, and the numerical values ​​listed above should not constitute a limitation on the scope of protection of the present invention.

[0036] If the words "first", "second" and so on are used in this article to limit components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of description to distinguish the components. Unless otherwise stated, the above words have no special meaning.

[0037] At the same time, if the above-mentioned invention discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connected by bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except when it is obviously impossible to use an integrated molding process).

[0038] In addition, unless otherwise stated, the terms used to indicate positional relationships or shapes in any of the technical solutions disclosed in the present invention include states or shapes that are approximate, similar, or close to them.

[0039] Any component provided by the present invention may be assembled from a plurality of separate components, or may be a separate component manufactured by an integral forming process.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A gearbox main shaft gear position gear installation structure, characterized in that: It includes a main shaft and a clutch inner ring arranged on the main shaft. One side of the clutch inner ring is inserted into the main shaft and limited by a limiting structure. The other side of the clutch is provided with a half-moon ring assembly for limiting the clutch inner ring. A half-moon ring limiting plate is provided on the outer side of the half-moon ring assembly.

2. The transmission main shaft gear position gear installation structure according to claim 1, characterized in that: A circular groove is provided on one side of the half-moon ring limiting plate for accommodating the limiting half-moon ring assembly.

3. The transmission main shaft gear position gear installation structure according to claim 1, characterized in that: A bearing is arranged on the outer side of the half-moon ring limiting plate, and a clamping assembly for limiting the bearing is arranged on the outer side of the bearing.

4. The transmission main shaft gear position gear installation structure according to claim 1, characterized in that: The main shaft is provided with a half-moon ring installation groove for installing the half-moon ring assembly.

5. The transmission main shaft gear position gear installation structure according to claim 1, characterized in that: The half-moon ring assembly comprises two half-moon rings, which are spliced ​​to form a ring body.

6. The transmission main shaft gear position gear installation structure according to claim 1, characterized in that: The limiting structure comprises a limiting flange arranged on the main shaft, and the interior of the clutch inner ring is provided with a limiting groove matched with the flange.

7. The transmission main shaft gear position gear installation structure according to claim 1, characterized in that: It also includes a transmission housing and motors arranged on both sides of the transmission housing, the output shafts of the motors are connected to the input shafts in the transmission housing, a motor rear bearing is arranged on the side of each motor output shaft away from the transmission housing, a gear bearing is arranged between the transmission output shaft and the transmission housing; the motor output shaft is connected to the input shaft of the transmission housing via a connecting spline.

8. The transmission main shaft gear position gear installation structure according to claim 7, characterized in that: The transmission housing is provided with a main lubricating oil channel, and the gear bearing has a vertical oil channel, and the main lubricating oil channel is connected to the vertical oil channel; the transmission housing is provided with a housing oil guide groove, and the housing oil guide groove is connected to the main lubricating oil channel; the transmission housing is provided with a valve block mounting seat, and the valve block mounting seat and the housing oil guide groove are connected via the valve block oil guide hole; two gear bearings are provided between the transmission output shaft and the transmission housing, one of the gear bearings is a first gear bearing, and the other gear bearing is a second gear bearing.

9. The transmission main shaft gear position gear installation structure according to claim 7, characterized in that: The input shaft in the transmission case is connected to the main shaft via a clutch assembly, thereby achieving gear shifting.

10. An installation method using the gearbox main shaft gear mounting structure according to claim 1, characterized in that: By inserting one side of the clutch inner ring used for gear shifting into the main shaft and limiting it, and then installing a meniscus assembly and a meniscus limit plate on the other side of the clutch inner ring, the meniscus assembly is used to limit the axial displacement of the clutch inner ring, and the meniscus limit plate is used to limit the radial displacement of the meniscus ring.

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