Integrated bridge type gearbox

Abstract

The utility model relates to an integrated bridge type gearbox, which belongs to the technical field of automobile transmission parts and comprises a gearbox body, an input shaft is arranged on the gearbox body, a mounting cavity is arranged in the gearbox body, a differential mechanism is rotatably mounted in the mounting cavity, and the differential mechanism is connected with the input shaft through a transmission component. The two sides of the gearbox body are provided with penetrating-out holes allowing the two ends of the differential mechanism to penetrate out, and a rear axle shaft is fixed in an inner hole of the differential mechanism. Due to the fact that the differential mechanism connected with the rear axle shaft is arranged in the gearbox, the gearbox and the rear axle shaft can be made into an integrated structure, installation space is greatly reduced, transmission loss is low, and transmission efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to an integrated bridge type gearbox and belongs to the technical field of automobile transmission parts. BACKGROUND

[0002] An all-terrain vehicle is a kind of traffic tool suitable for all terrains, commonly known as a "beach buggy". The beach buggy is also called an all-terrain four-wheel off-road vehicle, which has very good off-road performance. The rear axle of the all-terrain vehicle is currently connected to the output shaft of the gearbox through a transmission member. Such a structure not only occupies a large space, but also has low transmission efficiency. SUMMARY

[0003] The utility model provides an integrated bridge type gearbox, which solves the problems in the above background technology.

[0004] The utility model relates to an integrated bridge type gearbox, which comprises a gearbox body, an input shaft arranged on the gearbox body, an installation cavity arranged in the gearbox body, a differential mechanism rotatably arranged in the installation cavity, a transmission assembly connecting the differential mechanism and the input shaft, and a rear axle fixed in the inner hole of the differential mechanism and extending out of the through holes arranged on the two sides of the gearbox body.

[0005] The transmission assembly comprises a transmission shaft one and a transmission shaft two rotatably arranged in the gearbox body, the transmission shaft one is connected to the input shaft through a pair of bevel gears two, the transmission shaft one is connected to the transmission shaft two through a pair of bevel gears two, and the transmission shaft two is connected to the differential mechanism through a gear set, so that transmission can be completed.

[0006] As a kind of preferred, the outer wall of the through hole of the front and rear side of gearbox body is provided with not less than two support bosses, the support boss is provided with threaded hole, threaded hole is fixed with the hanger sheet metal part by fixed bolt, the hanger sheet metal part is provided with the installation hole corresponding with threaded hole. Can be conveniently installed on the vehicle body by the hanger sheet metal part of gearbox body.

[0007] As a kind of preferred, the hanger sheet metal part is provided with bending flanging at the outer edge of the side away from gearbox body, the bending flanging is provided with fixed hole at the end away from installation hole, to facilitate the fixation of hanger sheet metal part.

[0008] As a kind of preferred, the height of bending flanging gradually decreases from the end away from installation hole to the other end, the hanger sheet metal part is provided with avoiding circular arc groove on the side close to through hole, to prevent the hanger sheet metal part from interfering with the operation of rear axle.

[0009] As a kind of preferred, the top outside of threaded hole is provided with positioning recess, the hanger sheet metal part is welded and fixed with positioning sleeve matched with positioning recess on the side of installation hole close to support boss, to quickly position installation hole and threaded hole by the cooperation of positioning sleeve and positioning recess.

[0010] As a preferred embodiment, a positioning slot is provided on one side of the mounting hole close to the supporting boss, and a positioning platform is provided on the positioning sleeve that cooperates with the positioning slot, so that the positioning sleeve can be installed conveniently and quickly.

[0011] The utility model has the following beneficial effects:

[0012] By setting up a differential connected to the rear axle shaft in the gearbox, the gearbox and the rear axle shaft can be made into an integrated structure, which greatly reduces the installation space, reduces the transmission loss, and improves the transmission efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0015] Figure 3 This is a left-side structural schematic diagram of the present utility model;

[0016] Figure 4 This is a schematic diagram of the cross-sectional structure of the internal part of the utility model;

[0017] Figure 5 Schematic diagram of the structure of the differential;

[0018] Figure 6 It is a structural diagram of hanging sheet metal parts;

[0019] Figure 7 Schematic diagram of the bottom structure for hanging sheet metal parts;

[0020] Figure 8 This is a schematic diagram of part of the structure after the hanging sheet metal parts are installed;

[0021] In the figure: 1. Gearbox body; 2. Input shaft; 3. Differential; 4. Through hole; 5. Avoidance arc groove; 6. Mounting hole; 7. Hanging sheet metal; 8. Support boss; 9. Bending flange; 10. Drive shaft 1; 11. Inner hole; 12. Bevel gear 1; 13. Drive shaft 2; 14. Mounting cavity; 15. Positioning sleeve; 16. Threaded hole; 17. Fixing hole; 18. Positioning fixture. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the embodiments.

[0023] Example 1, as Figure 1 and Figure 8As shown, the utility model is an integrated bridge-type gearbox, comprising a gearbox body 1, an input shaft 2 being provided on the gearbox body 1, a mounting cavity 14 being provided in the gearbox body 1, a differential 3 being rotatably mounted in the mounting cavity 14, the differential 3 being connected to the input shaft 2 through a transmission assembly, through-holes 4 for the two ends of the differential 3 to pass through being provided on both sides of the gearbox body 1, and a rear axle shaft being fixed in the inner hole 11 of the differential 3.

[0024] During operation, the rear axle shaft is directly installed into the inner hole 11 of the differential 3 through a key, which greatly reduces the installation space. The rotation of the input shaft 2 of the gearbox body 1 will drive the differential 3 to rotate through the transmission assembly. The rotation of the differential 3 will directly drive the rear axle shaft to rotate, without the need for other transmission components, thereby improving the transmission efficiency.

[0025] Example 2, based on Example 1, comprises a transmission assembly comprising a transmission shaft 10 and a transmission shaft 2 13 rotatably mounted within the transmission body 1 . Transmission shaft 10 is connected to input shaft 2 via a pair of bevel gears 2, transmission shaft 10 is connected to transmission shaft 2 13 via a pair of bevel gears 1 12, and transmission shaft 2 13 is connected to differential 3 via a gear set. Bevel gear 2 and the gear set are not shown in the figure.

[0026] There are at least two supporting bosses 8 on the outer walls of the through holes 4 on the front and rear sides of the gearbox body 1. The supporting bosses 8 are provided with threaded holes 16. A hanging sheet metal part 7 is fixed in the threaded holes 16 by fixing bolts. The hanging sheet metal part 7 is provided with mounting holes 6 corresponding to the threaded holes 16.

[0027] A bent flange 9 is provided on the outer edge of the hanging sheet metal part 7 facing away from the gearbox body 1 , and a fixing hole 17 is provided on the bent flange 9 at the end away from the mounting hole 6 .

[0028] The height of the bent flange 9 gradually decreases from one end away from the mounting hole 6 to the other end, and an avoidance arc groove 5 is provided on the side of the hanging sheet metal part 7 close to the through hole 4.

[0029] A positioning groove is provided on the outer side of the top of the threaded hole 16 , and a positioning sleeve 15 that matches the positioning groove is welded and fixed on the hanging sheet metal part 7 on the side of the mounting hole 6 close to the supporting boss 8 .

[0030] When installing the hanging sheet metal part 7, the three positioning sleeves 15 can be respectively inserted into the corresponding positioning grooves, quickly aligned with the threaded hole 16 and the mounting hole 6, and then the bolts can be inserted to fix it.

[0031] A positioning slot is provided on one side of the mounting hole 6 close to the supporting boss 8 , and a positioning platform 18 that cooperates with the positioning slot is provided on the positioning sleeve 15 .

[0032] When welding and fixing the positioning sleeve 15 , the positioning clamping platform 18 of the positioning sleeve 15 is clamped into the positioning clamping groove of the mounting hole 6 to complete rapid positioning, and then the positioning sleeve 15 can be welded.

[0033] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0034] In the description of the present invention, the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

Claims

1. An integrated bridge-type gearbox, comprising a gearbox body (1), an input shaft (2) being provided on the gearbox body (1), and characterized in that: A mounting cavity (14) is provided in the transmission body (1), a differential (3) is rotatably mounted in the mounting cavity (14), the differential (3) is connected to the input shaft (2) via a transmission assembly, and two sides of the transmission body (1) are provided with through holes (4) for the two ends of the differential (3) to pass through, and a rear axle shaft is fixed in the inner hole (11) of the differential (3).

2. The integrated bridge-type gearbox according to claim 1, characterized in that: The transmission assembly includes a transmission shaft 1 (10) and a transmission shaft 2 (13) rotatably mounted in a transmission body (1), wherein the transmission shaft 1 (10) is connected to the input shaft (2) via a pair of bevel gears 2, the transmission shaft 1 (10) is connected to the transmission shaft 2 (13) via a pair of bevel gears 1 (12), and the transmission shaft 2 (13) is connected to the differential (3) via a gear set.

3. The integrated bridge-type gearbox according to claim 1, characterized in that: At least two supporting bosses (8) are provided on the outer walls of the through holes (4) on the front and rear sides of the gearbox body (1), and threaded holes (16) are provided on the supporting bosses (8). A hanging sheet metal part (7) is fixed in the threaded holes (16) by fixing bolts, and a mounting hole (6) corresponding to the threaded hole (16) is provided on the hanging sheet metal part (7).

4. The integrated bridge-type gearbox according to claim 3, characterized in that: A bent flange (9) is provided at the outer edge of the hanging sheet metal part (7) on the side facing away from the gearbox body (1), and a fixing hole (17) is provided on the bent flange (9) at the end away from the mounting hole (6).

5. The integrated bridge-type gearbox according to claim 4, characterized in that: The height of the bent flange (9) gradually decreases from one end away from the mounting hole (6) to the other end, and a side of the hanging sheet metal part (7) close to the through hole (4) is provided with an avoidance arc groove (5).

6. The integrated bridge-type gearbox according to claim 3, characterized in that: A positioning groove is provided on the outer side of the top of the threaded hole (16), and a positioning sleeve (15) that matches the positioning groove is welded and fixed on the hanging sheet metal part (7) on the side of the mounting hole (6) close to the supporting boss (8).

7. The integrated bridge-type gearbox according to claim 6, characterized in that: A positioning slot is provided on one side of the mounting hole (6) close to the supporting boss (8), and a positioning platform (18) is provided on the positioning sleeve (15) to cooperate with the positioning slot.

Images