CN216382468U

CN216382468U - Differential mechanism

Info

Publication number: CN216382468U
Application number: CN202122791837.0U
Authority: CN
Inventors: 翁智剑
Original assignee: Zhejiang Aovite Hydraulic Mechanical Co ltd
Current assignee: Zhejiang Aovite Hydraulic Mechanical Co ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-04-26
Anticipated expiration: 2031-11-15

Abstract

The utility model discloses a differential mechanism, which comprises a differential mechanism shell, wherein a second gasket is arranged on one side in the differential mechanism shell, a first mounting sleeve is arranged in the second gasket, a second gasket is arranged outside the first mounting sleeve, and a second gear is arranged in the first mounting sleeve. The differential is provided with a driven bevel gear, a planetary gear body and a third gear, carburization is carried out on the driven bevel gear, the second gear, the planetary gear body, the third gear and the like, the carburization layer depth of the tooth surface is 1.397-1.778, HRC is larger than or equal to 58, the service life of the differential can be prolonged by carrying out carburization on the surfaces of the driven bevel gear, the second gear, the planetary gear body and the third gear, and the problems that the differential is easy to wear after long-time use, the tooth surface is thinned, tooth block meshing is not strict and the service life of the differential is easy to reduce are solved.

Description

Differential mechanism

Technical Field

The utility model relates to the technical field of automobile spare and accessory parts, in particular to a differential mechanism.

Background

The differential mechanism has the function of enabling the rotating speeds of wheels on two sides to be different, is a main part for driving the axle, and has the function of allowing the half shafts on the two sides to rotate at different rotating speeds while transmitting power to the half shafts on the two sides, so that the condition that the wheels on the two sides run in a pure rolling mode at unequal distances as far as possible is met, and the friction between tires and the ground is reduced. The surface of a tooth in the existing differential is easy to wear after long-time use, the tooth surface is thinned, so that the meshing of a tooth block is not strict, and the service life of the differential is easy to reduce; the gear is inconvenient to control and install; therefore, we developed a new differential to solve the existing problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a differential mechanism to solve the problems that the tooth surfaces of the differential mechanism are easy to wear after long-term use, the tooth surfaces are thinned, the meshing of tooth blocks is not strict, and the service life of the differential mechanism is easy to reduce.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a differential mechanism, includes the differential mechanism casing, the inside one side of differential mechanism casing is provided with the second gasket, the internally mounted of second gasket has first installation cover, the externally mounted of first installation cover has the second gasket, the inside of first installation cover is provided with the second gear, one side of second gear is provided with first gear, the outside of first gear is provided with first lag, the inside of first lag is provided with the second guard ring, the outside of first lag is provided with the bearing, the externally mounted of bearing has first gasket, the inside one side of bearing is provided with the mounting bracket, first guard ring is installed to the outside one side of mounting bracket, the top of differential mechanism casing is provided with first end cap.

Preferably, be connected with the second packing ring between first protection circle and the bearing, one side of mounting bracket is provided with the protection and fills up, the inside of protection pad is provided with first fixing bolt, the outside edge of bearing is provided with second fixing bolt, the externally mounted of bearing has the second fixed pin, the protection fills up and installs the one side at the mounting bracket through first fixing bolt.

Preferably, the edge of the outside of the differential case is provided with a fourth mounting bolt, one end of the outside of the fourth mounting bolt is provided with a second fixing nut, the bottom end of the fourth mounting bolt is provided with a fifth mounting bolt, and the outside of the fifth mounting bolt and the first protective sleeve is provided with a first cushion block.

Preferably, one end of the differential case is provided with a driven bevel gear, two ends inside the driven bevel gear are provided with mounting assemblies, a planetary gear shaft is mounted inside the mounting assemblies, a third gear is mounted at the top end of the outside of the planetary gear shaft, an internal gear is arranged inside the third gear, two ends of the planetary gear shaft are provided with planetary gear bodies, and one side of the planetary gear shaft is provided with a first fixing pin.

Preferably, one end of the planetary gear body is provided with a first gasket, one end of the planetary gear body is provided with an inner ring, a second installation sleeve is arranged outside the inner ring, an outer ring body is arranged outside the second installation sleeve, a fourth plug is arranged between the installation component and the first gasket, a third installation bolt and a second installation bolt are arranged at the edge outside the installation component, the installation component is assembled through the third installation bolt and the second installation bolt, one end outside the second installation bolt is provided with a first fixing nut, one end of the outer ring body is provided with a third plug, one side of the third plug is provided with a first installation bolt, and one side of the first installation bolt is provided with a plug.

Preferably, a third fixing bolt is arranged on one side of the differential case, and a second plug is arranged on one side of the outside of the third fixing bolt.

Compared with the prior art, the utility model has the beneficial effects that: the differential not only realizes the increase of the service life of the differential, but also realizes the convenience in controlling the gear;

(1) by arranging the driven bevel gear, the second gear, the planetary gear body and the third gear, when the driven bevel gear, the second gear, the planetary gear body and the third gear are processed, the surface layer with the carbon content higher than that of the raw material in the carburized part is infiltrated into the surfaces of the driven bevel gear, the second gear, the planetary gear body and the third gear, the depth of a carburized layer on the surface of the tooth is 1.397-1.778, the HRC is not less than 58, and the service life of the differential can be prolonged by infiltrating the surface layer with the carbon content higher than that of the raw material in the carburized part into the surfaces of the driven bevel gear, the second gear, the planetary gear body and the third gear;

(2) through being provided with first fixing bolt, protection pad, mounting bracket and bearing, the gear two-way roll on gleason gear hobbing machine or equivalent equipment, when the standard installation distance, in the length of tooth direction, control gear contact pattern is 1/2-2/3 of tooth length at the tooth central line, and the mounting bracket can make things convenient for the differential mechanism main part to install on equipment, and the protection pad is installed in the inside bottom of mounting bracket through first fixing bolt.

Drawings

FIG. 1 is an exploded view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic side view of the present invention;

FIG. 4 is a schematic side-view perspective of the present invention;

fig. 5 is a schematic top perspective view of the present invention.

In the figure: 1. a first fixing pin; 2. a first fixing bolt; 3. a protective pad; 4. a mounting frame; 5. a first guard ring; 7. a first plug; 8. a second fixing pin; 9. a bearing; 10. a second fixing bolt; 11. a first gasket; 12. a second guard ring; 13. a first protective cover; 14. a first gear; 15. a driven bevel gear; 16. a second gear; 17. a first mounting sleeve; 18. a second gasket; 19. a differential housing; 20. a second plug; 21. a third fixing bolt; 22. plugging by screwing; 23. a first mounting bolt; 24. a third plug; 25. an outer ring body; 26. a first fixing nut; 28. a second mounting bolt; 29. a second mounting sleeve; 30. an inner ring; 31. mounting the component; 32. a third mounting bolt; 35. a first gasket; 36. a fourth plug; 37. a planetary gear body; 38. a planetary gear shaft; 39. a third gear; 41. an internal gear; 42. a second gasket; 43. a fourth mounting bolt; 44. a first cushion block; 45. a second fixing nut; 46. and a fifth mounting bolt.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1: referring to fig. 1-5, a differential mechanism includes a differential mechanism housing 19, a second gasket 18 is disposed on one side inside the differential mechanism housing 19, a first mounting sleeve 17 is disposed inside the second gasket 18, a second gasket 18 is disposed outside the first mounting sleeve 17, a first protecting sleeve 13 is disposed outside a first gear 14, a second protecting ring 12 is disposed inside the first protecting sleeve 13, a bearing 9 is disposed outside the first protecting sleeve 13, a first gasket 11 is disposed outside the bearing 9, a mounting frame 4 is disposed on one side inside the bearing 9, a first protecting ring 5 is disposed on one side outside the mounting frame 4, a first plug 7 is disposed on a top end of the differential mechanism housing 19, a protecting pad 3 is mounted on one side of the mounting frame 4 through a first fixing bolt 2, a fourth mounting bolt 43 is disposed on an edge of the outside of the differential mechanism housing 19, a second fixing nut 45 is disposed on one end of the outside of the fourth mounting bolt 43, a fifth mounting bolt 46 is arranged at the bottom end of the fourth mounting bolt 43, a first cushion block 44 is arranged outside the fifth mounting bolt 46 and the first protective sleeve 13, mounting assemblies 31 are arranged at two ends inside the driven bevel gear 15, a planetary gear shaft 38 is arranged inside the mounting assemblies 31, a first fixing pin 1 is arranged on one side of the planetary gear shaft 38, a first washer 35 is arranged at one end of the planetary gear body 37, an inner ring 30 is arranged at one end of the planetary gear body 37, a second mounting sleeve 29 is arranged outside the inner ring 30, an outer ring body 25 is arranged outside the second mounting sleeve 29, a fourth plug 36 is arranged between the mounting assembly 31 and the first washer 35, a third mounting bolt 32 and a second mounting bolt 28 are arranged at the edge outside of the mounting assembly 31, the mounting assembly 31 is assembled by the third mounting bolt 32 and the second mounting bolt 28, a first fixing nut 26 is arranged at one end outside the second mounting bolt 28, one end of the outer ring body 25 is provided with a third plug 24, one side of the third plug 24 is provided with a first mounting bolt 23, one side of the first mounting bolt 23 is provided with a plug 22, one side of the differential case 19 is provided with a third fixing bolt 21, and one side outside the third fixing bolt 21 is provided with a second plug 20;

a second gear 16 is arranged inside the first mounting sleeve 17, a first gear 14 is arranged on one side of the second gear 16, a driven bevel gear 15 is arranged at one end of the differential case 19, a third gear 39 is arranged at the top end of the outer part of the planetary gear shaft 38, an internal gear 41 is arranged inside the third gear 39, and planetary gear bodies 37 are arranged at two ends of the planetary gear shaft 38;

specifically, as shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4 and FIG. 5, when the driven bevel gear 15, the second gear 16, the planetary gear body 37 and the third gear 39 are machined, the case layer containing a carbon content higher than that of the raw material in the carburized part is infiltrated into the surfaces of the driven bevel gear 15, the second gear 16, the planetary gear body 37 and the third gear 39, the carburized layer on the tooth surface has a depth of 1.397-1.778, HRC ≧ 58EEPS-14, and the service life of the differential can be increased by infiltrating the case layer containing a carbon content higher than that of the raw material in the carburized part into the surfaces of the driven bevel gear 15, the second gear 16, the planetary gear body 37 and the third gear 39.

Example 2: a second gasket 42 is connected between the first protective ring 5 and the bearing 9, a protective pad 3 is arranged on one side of the mounting frame 4, a first fixing bolt 2 is arranged inside the protective pad 3, a second fixing bolt 10 is arranged at the edge of the outer part of the bearing 9, and a second fixing pin 8 is arranged outside the bearing 9;

specifically, as shown in fig. 1, 2, 3, 4 and 5, the gear rolls on a gleason gear hobbing machine or equivalent equipment in both directions, and at a standard mounting distance, in the tooth length direction, the contact patch of the control gear is 1/2-2/3 of the tooth length at the tooth center line, the mounting bracket 4 can facilitate the mounting of the differential main body on the equipment, and the protection pad 3 is mounted at the bottom end inside the mounting bracket 4 by the first fixing bolt 2.

The working principle is as follows: when the utility model is used, when the driven bevel gear 15, the second gear 16, the planet gear body 37 and the third gear 39 are processed, the surface layer with higher carbon content than the raw material in the carburized piece is infiltrated into the surfaces of the driven bevel gear 15, the second gear 16, the planet gear body 37 and the third gear 39, the carburized layer depth of the tooth surface is 1.397-1.778, HRC is more than or equal to 58EEPS-14, the service life of the differential can be prolonged by infiltrating the surface layer with higher carbon content than the raw material in the carburized piece into the surfaces of the driven bevel gear 15, the second gear 16, the planet gear body 37 and the third gear 39, the gears roll on a Gleason gear hobbing machine or equivalent equipment in two directions, when the standard installation distance is adopted, the contact impression of the gears is controlled to be 1/2-2/3 with the tooth length in the tooth center line, the mounting bracket 4 can be convenient for mounting the differential main body on the equipment, the protective pad 3 is mounted at the bottom end inside the mounting bracket 4 through the first fixing bolt 2, when turning, because the outer wheel has the phenomenon of slipping and dragging, the inner wheel has the phenomenon of slipping and rotating, two driving wheels will produce two opposite directions at this moment, the additional force, lead to the rotational speed difference of the wheels of both sides, thus has destroyed the equilibrium relation of the three, make the driven bevel gear 15 produce the rotation, make the internal gear 41 rotational speed of the inboard slow down, the third gear 39 rotational speed accelerates, thus realize the difference of the rotational speed of the wheels of both sides, not only aggravate the tire wear when the wheel slips, increase power and fuel consumption, still make the car turn to the difficulty, the braking performance worsens, in order to make the wheel not take place to slip as far as possible, must guarantee structurally that each wheel can rotate with different angles.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A differential comprising a differential case (19), characterized in that: a second gasket (18) is arranged on one side inside the differential shell (19), a first mounting sleeve (17) is mounted inside the second gasket (18), a second gasket (18) is mounted outside the first mounting sleeve (17), a second gear (16) is arranged inside the first mounting sleeve (17), a first gear (14) is arranged on one side of the second gear (16), a first protective sleeve (13) is arranged outside the first gear (14), a second protective ring (12) is arranged inside the first protective sleeve (13), a bearing (9) is arranged outside the first protective sleeve (13), a first gasket (11) is mounted outside the bearing (9), a mounting frame (4) is arranged on one side inside the bearing (9), and a first protective ring (5) is mounted on one side outside the mounting frame (4), the top end of the differential shell (19) is provided with a first plug (7).

2. A differential according to claim 1, wherein: be connected with second packing ring (42) between first protection circle (5) and bearing (9), one side of mounting bracket (4) is provided with protection pad (3), the inside of protection pad (3) is provided with first fixing bolt (2), the outside edge of bearing (9) is provided with second fixing bolt (10), the externally mounted of bearing (9) has second fixed pin (8), one side at mounting bracket (4) is installed through first fixing bolt (2) in protection pad (3).

3. A differential according to claim 1, wherein: the edge of the outside of differential mechanism casing (19) is provided with fourth mounting bolt (43), the outside one end of fourth mounting bolt (43) is provided with second fixation nut (45), the bottom of fourth mounting bolt (43) is provided with fifth mounting bolt (46), the outside of fifth mounting bolt (46) and first lag (13) is provided with first cushion (44).

4. A differential according to claim 1, wherein: the one end of differential mechanism casing (19) is provided with driven bevel gear (15), driven bevel gear (15) inside both ends are provided with installation component (31), internally mounted between installation component (31) has planetary gear axle (38), third gear (39) are installed on the outside top of planetary gear axle (38), the inside of third gear (39) is provided with internal gear (41), the both ends of planetary gear axle (38) are provided with planetary gear body (37), one side of planetary gear axle (38) is provided with first fixed pin (1).

5. A differential according to claim 4, wherein: a first gasket (35) is arranged at one end of the planetary gear body (37), an inner ring (30) is arranged at one end of the planetary gear body (37), a second mounting sleeve (29) is arranged outside the inner ring (30), an outer ring body (25) is arranged outside the second mounting sleeve (29), a fourth plug (36) is arranged between the mounting component (31) and the first gasket (35), a third mounting bolt (32) and a second mounting bolt (28) are arranged at the edge of the outer part of the mounting component (31), the mounting component (31) is assembled with the second mounting bolt (28) through the third mounting bolt (32), a first fixing nut (26) is arranged at one end of the outer part of the second mounting bolt (28), a third plug (24) is arranged at one end of the outer ring body (25), and a first mounting bolt (23) is arranged at one side of the third plug (24), one side of the first mounting bolt (23) is provided with a plug (22).

6. A differential according to claim 1, wherein: and a third fixing bolt (21) is arranged on one side of the differential shell (19), and a second plug (20) is arranged on one side of the outside of the third fixing bolt (21).