CN217081321U

CN217081321U - Novel friction plate type limited slip differential

Info

Publication number: CN217081321U
Application number: CN202123300111.9U
Authority: CN
Inventors: 王照斌
Original assignee: Shanghai Kaixu Transmission Technology Co ltd
Current assignee: Shanghai Kaixu Transmission Technology Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-07-29
Anticipated expiration: 2031-12-24

Abstract

The utility model discloses a novel friction plate formula limited slip differential, including the big shell of differential mechanism, one side of the big shell of differential mechanism is provided with the differential mechanism crust, the inside of the big shell of differential mechanism and differential mechanism crust sets up the cross axle, four epaxial a set of planet bevel gear and the planet bevel gear gasket that all are provided with of cross axle, the inboard of the big shell of differential mechanism and differential mechanism crust all is provided with a set of semi-axis bevel gear, semi-axis bevel gear's rear end is provided with a set of friction plate subassembly. The design of the external splines is added behind the half bevel gear, the large and small housings of the high-strength nodular cast iron differential with the internal splines are redesigned, and the copper-based internal and external friction plates are added, so that the differential can effectively limit slip, the slip limiting coefficient can reach 25% -45%, the use effect is better, the external connection size of the differential assembly is completely consistent with that of the original open type common differential, the interchangeability of the differential assembly is ensured, the internal structure of the differential is simple, and the differential is convenient to adapt to the reconstruction of different driving axles.

Description

Novel friction plate type limited slip differential

Technical Field

The utility model relates to a differential mechanism field especially relates to a novel friction plate formula limited slip differential mechanism.

Background

The existing 2-cube and 3-cube scraper for underground mine tunnels is characterized in that a high-mix vehicle type selects a foreign imported axle, a low-mix vehicle type selects a domestic axle, the domestic axle is designed to be a front axle which generally adopts a common open differential or a No-spin jaw differential device, and a No-spin jaw differential device is adopted by a rear axle.

The following problems are encountered in the use of the scraper using the domestic axle: firstly, when a front axle adopts a common open differential, the antiskid capability of the vehicle type with the same configuration on a wet road surface under a mine is insufficient, tires are easy to slip, and the driving force of the whole vehicle is reduced. But the vehicle can be steered flexibly and can realize in-situ large-angle steering; secondly, if the driving force of a front axle is improved to limit the tire from skidding, the domestic axle only can adopt a No-spin jaw differential device, the skid of the front axle tire is effectively prevented after the No-spin jaw differential device is adopted, and the driving force of the whole vehicle is improved, but the scraper is in a special articulated steering structure design, and the front axle and the rear axle are both the No-spin jaw differential devices, so that the No-spin jaw differential devices have the characteristics that the left tire and the right tire can be locked by 100 percent when skidding occurs, the flexibility of the whole vehicle is reduced, and the vehicle can not be steered in a large angle in situ.

The differential mechanism is a key component for controlling the power transmission of the axle, and the differential mechanism which can effectively improve the antiskid capability of a front axle and cannot influence the flexibility of the axle is lacked at present so as to ensure that the scraper can effectively prevent skidding and cannot lose the flexibility in a tunnel.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a novel friction plate type limited slip differential.

In order to achieve the above purpose, the utility model adopts the following technical scheme: including the big shell of differential mechanism, one side of the big shell of differential mechanism is provided with the differential mechanism cell, the inside of the big shell of differential mechanism and differential mechanism cell sets up the cross axle, four epaxial a set of planetary bevel gear and the planetary bevel gear gasket that all are provided with of cross axle, the inboard of the big shell of differential mechanism and the differential mechanism cell all is provided with a set of semi-axis bevel gear, semi-axis bevel gear's rear end is provided with a set of friction disc subassembly, the friction disc subassembly is formed by thick steel sheet, friction disc and the combination of thin steel sheet.

Preferably, the back of the half shaft bevel gear is provided with a spline, and the differential large shell and the differential small shell are both provided with internal splines.

Preferably, the friction plate assemblies are arranged in two groups, and the two groups of friction plate assemblies are respectively arranged on one sides of the backs of the two groups of half-shaft bevel gears.

Preferably, a friction plate is arranged in the middle of the friction plate assembly, a thick steel sheet is arranged at the left end of the friction plate, and a thin steel sheet is arranged at the right end of the friction plate.

Preferably, the friction plate is a copper-based friction plate.

Preferably, the differential large shell and the differential small shell are fixedly connected through bolts, and the bolts are provided with anti-loose washers.

Preferably, the large differential shell and the small differential shell 7 are made of QT550-7 high-strength nodular cast iron.

Preferably, lubricating oil ports are formed in the differential large shell and the differential small shell.

Preferably, the half shaft bevel gears are in meshed connection with the planetary bevel gears.

Preferably, the side bevel gear is fixedly connected with the axle half shaft.

The utility model discloses following beneficial effect has:

1. the design of an external spline is added behind the half bevel gear, the large and small housings of the high-strength nodular cast iron differential with the internal spline are redesigned, and the copper-based internal and external friction plates are added, so that the differential can effectively limit slip, the slip limiting coefficient can reach 25-45%, and the use effect is better;

2. the external connection size of the differential assembly is completely consistent with that of the original open type common differential, the interchangeability of the differential assembly is guaranteed, the internal structure of the differential is simple, and the differential is convenient to adapt to the transformation of different driving axles.

Drawings

Fig. 1 is a schematic view of a main structure provided by the present invention.

Illustration of the drawings:

1. a differential case; 2. a bolt; 3. a lock washer; 4. a half shaft bevel gear; 5. a planetary bevel gear; 6. a cross shaft; 7. a differential small shell; 8. a thick steel sheet; 9. a friction plate; 10. a thin steel sheet; 11. a planetary bevel gear spacer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, the present invention provides an embodiment: the large differential shell comprises a large differential shell 1, wherein a small differential shell 7 is arranged on one side of the large differential shell 1, a cross shaft 6 is arranged inside the large differential shell 1 and the small differential shell 7, a group of planetary bevel gears 5 and planetary bevel gear gaskets 11 are arranged on four shafts of the cross shaft 6, a group of half shaft bevel gears 4 are arranged on the inner sides of the large differential shell 1 and the small differential shell 7, a group of friction plate assemblies are arranged at the rear ends of the half shaft bevel gears 4, and each friction plate assembly is formed by combining a thick steel sheet 8, a friction plate 9 and a thin steel sheet 10.

Furthermore, the back of the half shaft bevel gear 4 is provided with splines, and the differential large shell 1 and the differential small shell 7 are both provided with internal splines.

Through the technical scheme, the half shaft bevel gear 4 is connected with a friction plate assembly through splines on the back of the gear and is installed in the internal splines of the differential large shell 1 and the differential small shell 7 together.

Furthermore, the friction plate assemblies are arranged in two groups, and the two groups of friction plate assemblies are respectively arranged on one sides of the backs of the two groups of half shaft bevel gears 4.

Through this technical scheme, friction disc subassembly sets up with half axle bevel gear in groups.

Furthermore, a friction plate 9 is arranged in the middle of the friction plate assembly, a thick steel sheet 8 is arranged at the left end of the friction plate 9, and a thin steel sheet 10 is arranged at the right end of the friction plate 9.

Further, the friction plate 9 is a copper-based friction plate.

Through this technical scheme, the friction disc adopts copper base friction disc, possesses wear-resisting, high temperature resistant characteristics.

Further, the differential mechanism large shell 1 and the differential mechanism small shell 7 are fixedly connected through a bolt 2, and a lock washer 3 is arranged on the bolt 2.

Through the technical scheme, the differential large shell 1, the cross shaft 6 and the differential small shell 7 are firmly fixed together by the bolts 2 and the anti-loose washers 3.

Furthermore, the differential large shell 1 and the differential small shell 7 are made of QT550-7 high-strength nodular cast iron.

By adopting the technical scheme, the differential large shell 1 and the differential small shell 7 are made of QT550-7 high-strength nodular cast iron, so that the service life and the strength of the shell and the internal spline of the shell are greatly prolonged.

Furthermore, lubricating oil ports are formed in the differential mechanism large shell 1 and the differential mechanism small shell 7.

Through this technical scheme, differential mechanism drips into the lubricating oil lubrication through lubricated hydraulic fluid port, need not lubricated cooling design.

Further, the side bevel gears 4 are in meshing engagement with the planetary bevel gears 5.

Further, the half-shaft bevel gear 4 is fixedly connected with an axle half shaft.

The working principle is as follows: when the rotating speeds of tires on two sides of the vehicle are different, the differential mechanism assembly plays a role in differential, and the rotating speed of the half-axis bevel gear 4 on one side rotating faster is exactly twice that of the half-axis bevel gear 4 on the other side rotating slower through the follow-up rotation of the four planetary bevel gears 5 meshed with the half-axis bevel gears 4; when a vehicle slips and a tire on one side which slips begins to slip, the axial force generated by meshing the half-shaft bevel gear 4 and the planetary bevel gear 5 can push the half-shaft bevel gear 4 to press a friction plate assembly consisting of a thick steel sheet 8, a friction plate 9 and a thin steel sheet 10 on the back surface of the half-shaft bevel gear 4, the friction force generated by the friction plate assembly can provide a reaction force for the half-shaft bevel gear 4, the reaction force can provide power for the tire which does not slip on the other side, the power for the vehicle to go forward is ensured, and the vehicle is prevented from being locked.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a novel friction plate formula limited slip differential, includes big shell of differential (1), its characterized in that: one side of differential mechanism big shell (1) is provided with differential mechanism small shell (7), the inside of differential mechanism big shell (1) and differential mechanism small shell (7) sets up cross axle (6), four epaxial a set of planetary bevel gear (5) and planetary bevel gear gasket (11) all are provided with of cross axle (6), the inboard of differential mechanism big shell (1) and differential mechanism small shell (7) all is provided with a set of semi-axis bevel gear (4), the rear end of semi-axis bevel gear (4) is provided with a set of friction disc subassembly, the friction disc subassembly is formed by thick steel sheet (8), friction disc (9) and thin steel sheet (10) combination.

2. The novel friction plate limited slip differential according to claim 1, wherein: the back of the half shaft bevel gear (4) is provided with splines, and the differential mechanism big shell (1) and the differential mechanism small shell (7) are both provided with internal splines.

3. The novel friction plate limited slip differential according to claim 1, wherein: the friction plate assemblies are arranged in two groups, and the two groups of friction plate assemblies are respectively arranged on one sides of the backs of the two groups of half shaft bevel gears (4).

4. The novel friction plate limited slip differential according to claim 1, wherein: the friction plate assembly is characterized in that a friction plate (9) is arranged in the middle of the friction plate assembly, a thick steel sheet (8) is arranged at the left end of the friction plate (9), and a thin steel sheet (10) is arranged at the right end of the friction plate (9).

5. The novel friction plate limited slip differential according to claim 1, wherein: the friction plate (9) is a copper-based friction plate.

6. The novel friction plate limited slip differential according to claim 1, wherein: the differential mechanism large shell (1) is fixedly connected with the differential mechanism small shell (7) through bolts (2), and the bolts (2) are provided with anti-loosening gaskets (3).

7. The novel friction plate limited slip differential according to claim 1, wherein: the differential large shell (1) and the differential small shell (7) are made of QT550-7 high-strength nodular cast iron.

8. The novel friction plate limited slip differential according to claim 1, wherein: lubricating oil ports are formed in the differential mechanism large shell (1) and the differential mechanism small shell (7).

9. The novel friction plate limited slip differential according to claim 1, wherein: the half shaft bevel gears (4) are in meshed connection with the planetary bevel gears (5).

10. The novel friction plate limited slip differential according to claim 1, wherein: and the half shaft bevel gear (4) is fixedly connected with an axle half shaft.