A transfer case easy to install and maintain

Abstract

The utility model discloses a transfer case which is easy to install and maintain, and belongs to the technical field of transfer cases. The utility model comprises a transfer case housing, an intermediate gear and an intermediate gear shaft. One end of the transfer case housing is provided with an installation groove for installing the intermediate gear. The transfer case housing is provided with shaft seats on both sides of the installation groove. The intermediate gear is installed between the two shaft seats. The two shaft seats are provided with bosses on the sides close to each other. A bearing is fixedly installed inside the intermediate gear. The two ends of the inner ring of the bearing are respectively abutted against the end faces of the two bosses. The intermediate gear shaft passes through the shaft seat and the inner ring of the bearing. By directly integrally forming and casting the boss on the end face of the shaft seat, the existing gasket can be replaced to support the end face of the gear. During installation, the operation of installing the gasket can be reduced, the operation difficulty is reduced, the intermediate gear is more convenient to install, and the installation and maintenance of the transfer case are convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of transfer cases, and in particular relates to a transfer case which is easy to install and maintain. Background Art

[0002] The so-called transfer case is a device that distributes the power of the engine. It can output power to the rear axle, or to the front / rear axle at the same time. From this perspective, it can be seen that the transfer case is actually an accessory on a four-wheel drive vehicle. With the development of four-wheel drive technology, the transfer case has also been changing, and gradually formed transfer cases of different styles, which are matched on four-wheel drive vehicles with different demands. Their basic principles and functions are also different.

[0003] The existing Chinese patent with announcement number CN216975714U discloses a transfer case assembly with a hand brake, including a transfer case housing, an intermediate gear rotatably sleeved on the transfer case housing, a front cover detachably connected to one side of the transfer case housing, a rear cover detachably connected to the other side of the transfer case housing, a transfer case output shaft rotatably sleeved on the front cover and the rear cover, a transfer case passive gear sleeved on the transfer case output shaft, the intermediate gear and the transfer case passive gear meshing, a pressure plate, a friction plate assembly and two intermediate friction plate assemblies are installed in the transfer case housing, the friction plate assembly and one of the intermediate friction plate assemblies A second hand brake steel plate is arranged between the two, and a first hand brake steel plate is arranged between the two middle friction plate parts. An oil seal is penetrated at one end of the transfer case housing, a fork shaft is penetrated in the oil seal, a fork is sleeved at one end of the fork shaft, a second elastic cylindrical pin is penetrated between the fork and the fork shaft, a first elastic cylindrical pin is penetrated in the second elastic cylindrical pin, a fork block is detachably connected to the lower end of the fork, the lower end of the transfer case housing is abutted against a bottom cover, first hexagonal flange bolts are screwed on both sides of the bottom cover, the first hexagonal flange bolts are screwed on the transfer case housing, and an external hexagonal screw plug is screwed on the middle part of the bottom cover.

[0004] With respect to the above-mentioned related technologies, the inventors have found that there are at least the following problems in the technologies: in existing agricultural machinery equipment, the intermediate gear needs to be installed between two shaft seats. When installing the intermediate gear, a gasket needs to be installed between the shaft seat and the end face of the gear to ensure the stability of the gear. During the installation process, the inner holes of the two washers need to be aligned with the inner holes of the shaft seat and the gear before the shaft can be inserted. This operation is relatively difficult, which makes the gear very troublesome to install. Utility Model Content

[0005] The purpose of the utility model is to provide a transfer case which is easy to install and maintain, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a transfer case that is easy to install and maintain, comprising a transfer case housing, an intermediate gear and an intermediate gear shaft, one end of the transfer case housing is provided with an installation groove for installing the intermediate gear, the transfer case housing is provided with shaft seats on both sides of the installation groove, the intermediate gear is installed between the two shaft seats, and the two shaft seats are provided with bosses on the sides close to each other, a bearing is fixedly installed inside the intermediate gear, the two ends of the inner ring of the bearing are respectively abutted against the end faces of the two bosses, and the intermediate gear shaft passes through the shaft seat and the inner ring of the bearing.

[0007] As a preferred embodiment, the boss and the shaft seat are integrally formed by casting.

[0008] As a preferred embodiment, the distance between the two boss end faces is matched with the width of the bearing inner ring.

[0009] As a preferred implementation, a threaded hole for locking the intermediate gear shaft is formed on one side of one of the shaft seats.

[0010] As a preferred implementation, a plurality of evenly distributed mounting holes are formed at an edge of the transfer case housing close to one end of the mounting slot.

[0011] As a preferred embodiment, a front cover is provided on one side of the transfer case housing.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The transfer case, which is easy to install and maintain, can replace the existing gasket by integrally forming and casting a boss on the end surface of the shaft seat to support the end surface of the gear. During installation, the operation of installing the gasket can be reduced, the difficulty of operation can be reduced, the intermediate gear can be installed more conveniently, and the installation and maintenance of the transfer case are convenient.

[0014] The transfer case, which is easy to install and maintain, can support the inner ring of the bearing by respectively contacting the two ends of the inner ring of the bearing with the end faces of the two bosses, so that the intermediate gear can rotate stably. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the transfer case housing of the utility model;

[0017] Figure 3 It is a structural schematic diagram of the intermediate gear of the utility model.

[0018] In the figure: 1. transfer case housing; 11. mounting groove; 12. axle seat; 13. boss; 14. threaded hole; 15. mounting hole; 16. front cover; 2. intermediate gear; 21. bearing; 3. intermediate gear shaft. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the embodiments.

[0020] The following examples are used to illustrate the present invention, but cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0021] See also Figure 1-3 The utility model provides a transfer case which is easy to install and maintain, comprising a transfer case housing 1, an intermediate gear 2 and an intermediate gear shaft 3. An installation groove 11 for installing the intermediate gear 2 is opened at one end of the transfer case housing 1. The transfer case housing 1 is provided with shaft seats 12 on both sides of the installation groove 11. The intermediate gear 2 is installed between the two shaft seats 12. The two shaft seats 12 are provided with bosses 13 on the sides close to each other. The bosses 13 and the shaft seats 12 are integrally formed and cast. A bearing 21 is fixedly installed inside the intermediate gear 2. The spacing between the end faces of the two bosses 13 is matched with the width of the inner ring of the bearing 21. The two ends of the inner ring of the bearing 21 are respectively abutted against the end faces of the two bosses 13. The intermediate gear shaft 3 passes through the shaft seat 12 and the inner ring of the bearing 21. By directly integrally forming and casting the boss 13 on the end face of the shaft seat 12, the existing gasket can be replaced to support the end face of the gear. During installation, the operation of installing the gasket can be reduced, the operation difficulty is reduced, the intermediate gear 2 is more convenient to install, and the installation and maintenance of the transfer case are convenient.

[0022] Specifically, a threaded hole 14 for locking the intermediate gear shaft 3 is provided on one side of one of the shaft seats 12 . By providing the threaded hole 14 , a bolt can be inserted to fix the intermediate gear shaft 3 .

[0023] A plurality of evenly distributed mounting holes 15 are provided at the edge of the transfer case housing 1 near one end of the mounting groove 11 , and a front cover 16 is provided at one side of the transfer case housing 1 , through which the transfer case can be disassembled and repaired easily.

[0024] The working principle and use process of the utility model are as follows: first, during installation, it is only necessary to place the intermediate gear 2 between the two shaft seats 12, so that the two ends of the inner ring of the bearing 21 respectively abut the end faces of the two bosses 13, and then the intermediate gear shaft 3 is passed through one side of the shaft seat 12, penetrating the inner ring of the bearing 21 for support and fixation. By directly integrally molding and casting the boss 13 on the end face of the shaft seat 12, the existing gasket can be replaced to support the end face of the gear. During installation, the operation of installing the gasket can be reduced, the difficulty of operation is reduced, and the intermediate gear 2 is more convenient to install, which is convenient for the installation and maintenance of the transfer case.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transfer case that is easy to install and maintain, comprising a transfer case housing (1), an intermediate gear (2) and an intermediate gear shaft (3), characterized in that: One end of the transfer case housing (1) is provided with a mounting groove (11) for mounting the intermediate gear (2); the transfer case housing (1) is provided with shaft seats (12) on both sides of the mounting groove (11); the intermediate gear (2) is mounted between the two shaft seats (12); the two shaft seats (12) are provided with bosses (13) on the sides close to each other; a bearing (21) is fixedly mounted inside the intermediate gear (2); the two ends of the inner ring of the bearing (21) are respectively in contact with the end faces of the two bosses (13); and the intermediate gear shaft (3) passes through the shaft seat (12) and the inner ring of the bearing (21).

2. A transfer case that is easy to install and maintain according to claim 1, characterized in that: The boss (13) and the shaft seat (12) are integrally formed by casting.

3. A transfer case that is easy to install and maintain according to claim 1, characterized in that: The distance between the end faces of the two bosses (13) is matched with the width of the inner ring of the bearing (21).

4. A transfer case that is easy to install and maintain according to claim 1, characterized in that: One side of one of the shaft seats (12) is provided with a threaded hole (14) for locking the intermediate gear shaft (3).

5. A transfer case that is easy to install and maintain according to claim 1, characterized in that: A plurality of evenly distributed mounting holes (15) are provided at an edge of the transfer case housing (1) close to one end of the mounting groove (11).

6. A transfer case that is easy to install and maintain according to claim 1, characterized in that: A front cover (16) is provided on one side of the transfer case housing (1).

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