Gearbox double-steering transmission structure

Abstract

The utility model relates to the technical field of gearboxes, in particular to a gearbox double-steering transmission structure which comprises a gearbox body and a variable-speed shaft, a first shaft body, a second shaft body, a third shaft body and a set of output shafts are sequentially arranged in the middle of the gearbox body, a second-gear gear is arranged in the middle of the first shaft body, and a third-gear gear is arranged in the middle of the second shaft body. A central transmission gear is arranged in the middle of the second shaft body, the II-gear gear is meshed with the central transmission gear, a right steering gear and a left steering gear are arranged on the two sides of the central transmission gear respectively, and a right clutch gear is arranged on one side of the right steering gear. Through the arrangement of the hanging box small gear, the hanging box large gear and the hanging box steering selection sliding gear on the two sides, the hanging box steering selection sliding gear can be driven to move through the steering shifting fork during steering operation, and the other output shaft synchronously performs opposite or identical driving while the output shaft on one side steers. Therefore, flexible turning in a narrow area or large-radius turning in a wide area can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of gearboxes, in particular to a gearbox double-steering transmission structure. Background Art

[0002] The gearbox is an important part of the automobile power transmission system. Its main function is to adjust the torque and speed output by the engine so that the car can obtain appropriate power performance and economic performance under different driving conditions.

[0003] Instructions attached Figure 1 This is a conventional transmission steering transmission structure. In this structure, the third-speed gear 1 rotates in the direction shown in the figure, while the meshing central transmission gear 2 rotates in the opposite direction. The right-side transmission operation is as follows: the central transmission gear 2 transmits motion to the right steering gear 3 via a toothed mechanism. Because the inner friction plate of the right steering gear 3 and the outer friction plate of the right brake seat 4 are disengaged, the right steering gear 3 transmits motion to the right reduction double gear 5, which then transmits motion to the right drive gear 6, as shown in the figure. The right-side drive shaft rotates according to the normal transmission ratio. The left-side transmission operation is as follows: Due to the action of the steering fork, the teeth of the central transmission gear 2 and the left steering gear 3a disengage, resulting in no motion input to the left steering gear 3a. Simultaneously, the inner friction plate of the right steering gear 3 and the outer friction plate of the right brake seat 4 are compressed, causing the left steering gear 3a to stop rotating quickly. This prevents the right reduction double gear 5a from rotating, and also prevents the left drive gear 6a from rotating, resulting in the left-side drive shaft no longer rotating. Since the left drive shaft does not rotate, the right drive shaft rotates normally, thereby realizing the steering function. However, the steering transmission structure only rotates one side of the drive shaft during rotation, which makes turning not flexible enough in narrow areas and cannot realize large radius turning in wide areas, and the operation is cumbersome.

[0004] Therefore, a gearbox dual-steering transmission structure is needed to improve the above problems. Utility Model Content

[0005] The purpose of the present invention is to provide a gearbox dual-steering transmission structure to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A gearbox dual-steering transmission structure includes a gearbox body and a speed change shaft, wherein the middle part of the gearbox body is sequentially provided with a first shaft body, a second shaft body, a third shaft body and a group of output shafts, the middle part of the first shaft body is provided with a II gear, the middle part of the second shaft body is provided with a central transmission gear, the II gear gear is meshed with the central transmission gear, a right steering gear and a left steering gear are respectively provided on both sides of the central transmission gear, a right clutch gear is provided on one side of the right steering gear, and a left clutch gear is provided on one side of the left steering gear, a right reduction double gear and a left reduction double gear are respectively provided on the third shaft body, the right reduction double gear and the left reduction double gear are meshed with the right steering gear and the left steering gear respectively, and a gearbox is provided on the output shaft A right driving gear and a left driving gear are provided which are meshed with the right reduction double gear and the left reduction double gear respectively. A right hanging box and a left hanging box are provided on both sides of the gearbox body respectively. Parking shafts are provided in the right hanging box and the left hanging box. The right hanging box large gear and the right hanging box small gear are provided on the parking shaft inside the right hanging box from left to right in sequence. The left hanging box small gear and the left hanging box large gear are provided on the parking shaft inside the left hanging box from right to left in sequence. The two ends of the first shaft body are provided with a right hanging box steering selection sliding gear and a left hanging box steering selection sliding gear which are meshed with the right hanging box large gear and the left hanging box large gear respectively. The right hanging box small gear and the left hanging box small gear are meshed with the right clutch gear and the left clutch gear respectively.

[0008] As a preferred solution of the present invention, the adjacent sides of the right steering gear and the left steering gear and the central transmission gear are provided with tooth structures, and both sides of the central transmission gear are provided with tooth structures. The central transmission gear switches to docking or disengagement with the right steering gear or the left steering gear under the action of the steering fork.

[0009] As a preferred solution of the present invention, a plurality of inner friction plates are provided on the side of the right steering gear and the left steering gear away from the central transmission gear, and a plurality of outer friction plates are provided on the right clutch gear and the left clutch gear. Under the action of the steering fork, the inner friction plates on the right steering gear and the left steering gear respectively cooperate with or separate from the outer friction plates on the right clutch gear and the left clutch gear.

[0010] As a preferred solution of the present invention, the right hanging box steering selection sliding gear and the left hanging box steering selection sliding gear are connected to the steering fork through a linkage structure.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model arranges the small gears of the hanging box, the large gear of the hanging box and the hanging box steering selection sliding gear on both sides. When performing a steering operation, the steering fork can be used to drive the hanging box steering selection sliding gear to move. When the output shaft on one side is turned, the other output shaft is synchronously driven in the opposite or the same direction, thereby realizing flexible turning in a narrow area or large-radius turning in a wide area. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the prior art;

[0014] Figure 2 This is a schematic diagram of the structure of the utility model rotating in a narrow area;

[0015] Figure 3 This is a schematic diagram of the structure of the utility model rotating in a wide area.

[0016] In the figure: II gear gear 1, central transmission gear 2, right steering gear 3a, left steering gear 3b, right clutch gear 4a, left clutch gear 4b, right reduction double gear 5a, left reduction double gear 5b, right drive gear 6a, left drive gear 6b, right hanging box pinion 7a, left hanging box pinion 7b, right hanging box large gear 8a, left hanging box large gear 8b, right hanging box steering selection sliding gear 9a, left hanging box steering selection sliding gear 9b, parking shaft 10, output shaft 11. DETAILED DESCRIPTION

[0017] The following will combine the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to related disclosures. Several embodiments of the present invention are provided. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0021] See also Figure 2-3 , the utility model provides a technical solution:

[0022] For example, please refer to Figure 2 and 3 A gearbox dual-steering transmission structure includes a gearbox body and a speed change shaft. The middle part of the gearbox body is sequentially provided with a first shaft body, a second shaft body, a third shaft body and a group of output shafts 11. A Ⅱ-speed gear 1 is provided in the middle of the first shaft body, a central transmission gear 2 is provided in the middle of the second shaft body, and the Ⅱ-speed gear 1 is meshed with the central transmission gear 2. A right steering gear 3a and a left steering gear 3b are provided on both sides of the central transmission gear 2, respectively. A right clutch gear 4a is provided on one side of the right steering gear 3a, and a left clutch gear 4b is provided on one side of the left steering gear 3b. A right reduction double gear 5a and a left reduction double gear 5b are provided on the third shaft body, respectively. The right reduction double gear 5a and the left reduction double gear 5b are meshed with the right steering gear 3a and the left steering gear 3b respectively. A right reduction double gear 5a and a left reduction double gear 5b are provided on the output shaft 11, respectively meshed with the right reduction double gear 5a and the left reduction double gear 5b. The driving gear 6a and the left driving gear 6b, the right and left hanging boxes are respectively provided on both sides of the gearbox body, and the right and left hanging boxes are both provided with parking shafts 10. The setting of the parking shaft 10 realizes the parking function. The right hanging box internal parking shaft 10 is provided with the right hanging box large gear 8a and the right hanging box small gear 7a from left to right, and the left hanging box internal parking shaft 10 is provided with the left hanging box small gear 7b and the left hanging box large gear 8b from right to left. The two ends of the first shaft body are respectively provided with the right hanging box steering selection sliding gear 9a and the left hanging box steering selection sliding gear 9b that are meshed with the right hanging box large gear 8a and the left hanging box large gear 8b. The right hanging box steering selection sliding gear 9a and the left hanging box steering selection sliding gear 9b are connected to the steering fork through a linkage structure. The right hanging box pinion 7a and the left hanging box pinion 7b are respectively meshed with the right clutch gear 4a and the left clutch gear 4b.

[0023] Please refer to Figure 2 and 3The right steering gear 3a and the left steering gear 3b are both provided with tooth structures on the adjacent sides of the central transmission gear 2, and the central transmission gear 2 is provided with tooth structures on both sides. The central transmission gear 2 switches to docking or disengagement with the right steering gear 3a or the left steering gear 3b under the action of the steering fork.

[0024] Please refer to Figure 2 and 3 The right steering gear 3a and the left steering gear 3b are provided with a plurality of inner friction plates on the side away from the central transmission gear 2, and the right clutch gear 4a and the left clutch gear 4b are provided with a plurality of outer friction plates. Under the action of the steering fork, the inner friction plates on the right steering gear 3a and the left steering gear 3b respectively cooperate with or separate from the outer friction plates on the right clutch gear 4a and the left clutch gear 4b.

[0025] like Figure 2 As shown: The direction of rotation of gear 1 of gear II is as follows Figure 2 As shown by the arrow above, the central transmission gear 2 that is meshed with it rotates in the opposite direction. The transmission situation on the right side is as follows: the central transmission gear 2 transmits the motion to the right steering gear 3a through the docking of the tooth structure. Since the inner friction plate of the right steering gear 3a and the outer friction plate of the right clutch gear 4a are in the loose state, the right steering gear 3a transmits the motion to the right reduction double gear 5a and the right drive gear 6a. The direction is as shown in the figure below. Figure 2 As shown by the arrow, the right drive shaft 11 rotates according to the normal transmission ratio. Since the friction plate is loosened, the right clutch gear 4a, the right gearbox pinion 7a, the right gearbox gearbox 8a, and the right gearbox steering selection sliding gear 9a have no effect on the rotation of the right drive shaft 11.

[0026] The transmission situation on the left side is as follows: Due to the action of the steering fork, the tooth structure of the central transmission gear 2 and the left steering gear 3b is disengaged. The left steering gear 3b does not receive motion and power from the central transmission gear 2. The left gearbox steering selection sliding gear 9b moves in the same direction as the II gear 1. The left gearbox steering selection sliding gear 9b transmits motion to the left gearbox large gear 8b in the direction as shown below. Figure 2 As shown by the arrow, the left box pinion 7b and the left box large gear 8b move in the same direction. The left box pinion 7b transmits the motion to the left clutch gear 4b in the direction shown in the figure. At the same time, the inner friction plate of the left steering gear 3b and the outer friction plate of the left clutch gear 4b are in a compressed state. The left clutch gear 4b transmits the motion to the left steering gear 3b through friction in the direction shown in the figure. The left steering gear 3b transmits the motion to the left reduction double gear 5b, and then to the left drive gear 6b in the direction shown in the figure. Figure 2 As shown by the upper transmission direction arrow, since the left drive shaft 11 and the right drive shaft 11 rotate in opposite directions, a flexible steering function is achieved in a narrow area.

[0027] Rotate in a wide area Figure 3 As shown, the steering selection fork simultaneously shifts the right and left gears 9a and 9b of the steering selection system to the positions where they are engaged with the right clutch gear 4a and the left clutch gear 4b respectively through the linkage mechanism. The movement at this moment is described as follows: The direction of rotation of the gear 1 in gear II is as follows: Figure 3 As shown, the meshing central transmission gear 2 rotates in the opposite direction. The right-side transmission operation is as follows: the central transmission gear 2 transmits motion to the right steering gear 3a via tooth engagement. Because the inner friction plate of the right steering gear 3a and the outer friction plate of the right clutch gear 4a are disengaged, the right steering gear 3a transmits motion to the right reduction double gear 5a, which then transmits motion to the right drive gear 6a in the direction shown. The right drive shaft rotates according to the normal transmission ratio. Because the friction plates are disengaged, the motion of the right clutch gear 4a, right gearbox pinion 7a, right gearbox gearwheel 8a, and right gearbox steering selector sliding gear 9a has no effect on the rotation of the right drive shaft.

[0028] The transmission situation on the left side is as follows: Due to the action of the steering fork, the teeth of the central transmission gear 2 and the right steering gear 3a are disengaged, and the left steering gear 3b has no motion and power transmitted from the central transmission gear 2. The left gearbox steering selection sliding gear 9b moves in the same direction as the II gear 1. The left gearbox steering selection sliding gear 9b transmits the motion to the left clutch gear 4b in the direction shown in the figure. At the same time, the inner friction plate of the left steering gear 3b and the outer friction plate of the left clutch gear 4b are in a compressed state. The left clutch gear 4b transmits the motion to the left steering gear 3b through friction in the direction shown in the figure. Figure 3 The left steering gear 3b transmits the motion to the left reduction double gear 5b, and then to the left drive gear 6b, in the direction of Figure 3 As shown in the figure, since the left and right drive shafts rotate in the same direction but at different speeds, a large-radius steering function is achieved in a wide area, which improves the force on the drive shaft.

[0029] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gearbox dual-steering transmission structure, comprising a gearbox body and a speed change shaft, wherein a first shaft body, a second shaft body, a third shaft body and a group of output shafts (11) are sequentially arranged in the middle of the gearbox body, a Ⅱ-speed gear (1) is arranged in the middle of the first shaft body, a central transmission gear (2) is arranged in the middle of the second shaft body, the Ⅱ-speed gear (1) is meshed with the central transmission gear (2), a right steering gear (3a) and a left steering gear (3b) are respectively arranged on both sides of the central transmission gear (2), and a right clutch gear (3a) is arranged on one side of the right steering gear (3a). 4a), a left clutch gear (4b) is provided on one side of the left steering gear (3b), a right reduction double gear (5a) and a left reduction double gear (5b) are provided on the third shaft, the right reduction double gear (5a) and the left reduction double gear (5b) are respectively engaged with the right steering gear (3a) and the left steering gear (3b), and a right drive gear (6a) and a left drive gear (6b) are respectively engaged with the right reduction double gear (5a) and the left reduction double gear (5b), on the output shaft (11), characterized in that: A right box and a left box are respectively provided on both sides of the gearbox body. A parking shaft (10) is provided in each of the right box and the left box. A right box gear (8a) and a right box pinion (7a) are sequentially provided on the parking shaft (10) inside the right box from left to right. A left box pinion (7b) and a left box gear (8b) are sequentially provided on the parking shaft (10) inside the left box from right to left. A right box steering selection sliding gear (9a) and a left box steering selection sliding gear (9b) meshing with the right box gear (8a) and the left box gear (8b) are respectively provided at both ends of the first shaft body. The right box pinion (7a) and the left box pinion (7b) are respectively meshed with the right clutch gear (4a) and the left clutch gear (4b).

2. The gearbox dual-steering transmission structure according to claim 1, characterized in that: The right steering gear (3a) and the left steering gear (3b) are both provided with tooth structures on adjacent sides of the central transmission gear (2), and tooth structures are provided on both sides of the central transmission gear (2). The central transmission gear (2) switches to docking or disengagement with the right steering gear (3a) or the left steering gear (3b) under the action of a steering fork.

3. The gearbox dual-steering transmission structure according to claim 2, characterized in that: A plurality of inner friction plates are provided on the side of the right steering gear (3a) and the left steering gear (3b) away from the central transmission gear (2); a plurality of outer friction plates are provided on the right clutch gear (4a) and the left clutch gear (4b); and the inner friction plates on the right steering gear (3a) and the left steering gear (3b) respectively cooperate with or separate from the outer friction plates on the right clutch gear (4a) and the left clutch gear (4b) under the action of the steering fork.

4. The gearbox dual-steering transmission structure according to any one of claims 1 to 3, characterized in that: The right hanging box steering selection sliding gear (9a) and the left hanging box steering selection sliding gear (9b) are connected to the steering fork through a linkage structure.

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