CN115355294A - Novel main speed reducer with limited slip differential lock - Google Patents

Novel main speed reducer with limited slip differential lock Download PDF

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Publication number
CN115355294A
CN115355294A CN202211029485.8A CN202211029485A CN115355294A CN 115355294 A CN115355294 A CN 115355294A CN 202211029485 A CN202211029485 A CN 202211029485A CN 115355294 A CN115355294 A CN 115355294A
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CN
China
Prior art keywords
gear
limited slip
shell
meshing sleeve
left half
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211029485.8A
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Chinese (zh)
Inventor
赵冰
田宏炜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaanxi Hande Axle Co Ltd
Original Assignee
Shaanxi Hande Axle Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shaanxi Hande Axle Co Ltd filed Critical Shaanxi Hande Axle Co Ltd
Priority to CN202211029485.8A priority Critical patent/CN115355294A/en
Publication of CN115355294A publication Critical patent/CN115355294A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H37/00—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00
    • F16H37/02—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings
    • F16H37/06—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
    • F16H37/08—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing
    • F16H37/0806—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with a plurality of driving or driven shafts
    • F16H37/0813—Combinations of mechanical gearings, not provided for in groups F16H1/00 - F16H35/00 comprising essentially only toothed or friction gearings with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts with differential gearing with a plurality of driving or driven shafts with only one input shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D43/00—Automatic clutches
    • F16D43/02—Automatic clutches actuated entirely mechanically
    • F16D43/20—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
    • F16D43/21—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members
    • F16D43/213—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members with axially applied torque-limiting friction surfaces
    • F16D43/215—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members with axially applied torque-limiting friction surfaces with flat friction surfaces, e.g. discs
    • F16D43/216—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure with friction members with axially applied torque-limiting friction surfaces with flat friction surfaces, e.g. discs with multiple lamellae
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
    • F16H48/22—Arrangements for suppressing or influencing the differential action, e.g. locking devices using friction clutches or brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H48/00—Differential gearings
    • F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
    • F16H48/24—Arrangements for suppressing or influencing the differential action, e.g. locking devices using positive clutches or brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/32—Gear shift yokes, e.g. shift forks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H2063/3093—Final output elements, i.e. the final elements to establish gear ratio, e.g. dog clutches or other means establishing coupling to shaft

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Retarders (AREA)

Abstract

The invention relates to a novel main speed reducer with a limited slip differential lock, which comprises a differential assembly, a multi-disc wet clutch and a gear shifting mechanism, wherein the differential assembly is provided with a first clutch and a second clutch; the differential assembly comprises a left half axle gear, a tooth surface difference shell and a tooth back difference shell, wherein a baffle plate for axially positioning the left half axle gear is arranged on the tooth surface difference shell; the multi-plate wet clutch is of an up-and-down symmetrical structure, comprises a group of friction plate sets and a group of cylindrical spiral springs in a compressed state, and is assembled in the tooth surface difference shell; the gear shifting mechanism comprises a shifting fork, a sliding meshing sleeve and a spline sleeve; the sliding meshing sleeve is movably connected with the left half axle gear, and can move axially under the action of the shifting fork to be connected with or disconnected from the left half axle gear. The invention can not only meet the requirement of limited slip function on muddy roads, but also cancel the limited slip function on good roads and turning roads, reduce the abrasion of tires and reduce the turning radius.

Description

Novel main reducer with limited slip differential lock
Technical Field
The invention relates to the technical field of automobile parts, in particular to a novel main speed reducer with a limited slip differential lock.
Background
For the vehicle running under the existing multi-turning road condition, the good road condition and the muddy road condition, frequent gear engaging or gear disengaging is carried out, the operation is too frequent, and the axle fault is easy to occur. The main speed reducer with the limited slip differential is always in a limited slip state, and tires are easy to wear.
Disclosure of Invention
The invention provides a novel main speed reducer with a limited slip differential lock, which can meet the limited slip function required on muddy roads and can cancel the limited slip function on good roads and turning roads.
In order to solve the problems in the background art, the invention is realized by the following technical scheme:
a novel main speed reducer with a limited slip differential lock comprises a differential assembly, a multi-disc wet clutch and a gear shifting mechanism;
a driving bevel gear and a driven bevel gear are installed in the main speed reducer, the driving bevel gear is assembled on a speed reducer shell through a bearing, the differential assembly is assembled on the speed reducer shell through a bearing, and the driven bevel gear is assembled on the differential assembly;
the differential assembly comprises a left half axle gear, a tooth surface difference shell and a tooth back difference shell, wherein a baffle plate for axially positioning the left half axle gear is arranged on the tooth surface difference shell;
the tooth surface difference shell and the tooth back difference shell are fixedly connected with the driven bevel gear through bolts;
the multi-plate wet clutch is of an up-and-down symmetrical structure, comprises a group of friction plate sets and a group of cylindrical spiral springs in a compressed state, and is assembled in the tooth surface difference shell;
the gear shifting mechanism comprises a shifting fork, a sliding meshing sleeve and a spline sleeve; the sliding meshing sleeve is movably connected with the left half axle gear, and can axially move under the action of a shifting fork to be connected with or disconnected from the left half axle gear.
As a further illustration of the invention: the friction plate set is composed of a static friction plate and a dynamic friction plate, the right side of the friction plate set is connected with the tooth surface difference shell through a spring, and the left side of the friction plate set is connected with the tooth back difference shell.
As a further description of the invention: the inner side of the spline sleeve is provided with an internal spline, the outer side of the spline sleeve is provided with an external spline, and the inner side of the friction plate group is connected with the external spline of the spline sleeve;
the sliding engagement sleeve is arranged on the left side of the left half axle gear, the right end of the sliding engagement sleeve is provided with end face teeth I, and the left end of the left half axle gear is provided with end face teeth II;
an external spline is arranged on the outer side of the sliding meshing sleeve and connected with an internal spline of the spline sleeve; the sliding meshing sleeve is provided with a positioning shaft diameter connected with the differential shell, and the outer wall of the left side of the sliding meshing sleeve is provided with an annular groove connected with a shifting fork;
the shifting fork is arranged above the sliding meshing sleeve, the middle part of the shifting fork is hinged with the reducer shell, and the fork head is movably connected with the sliding meshing sleeve.
As a further illustration of the invention: the main speed reducer adopts a symmetrical planetary gear differential and a multi-disc wet type normally closed clutch.
As a further description of the invention: the symmetrical planetary gear differential adopts an integral spherical surface.
As a further illustration of the invention: when the sliding meshing sleeve 5 is disengaged, the axial clearance between the tooth tops of the end face teeth I and the end face teeth II is 2.6-2.8 mm.
As a further illustration of the invention: the number of the springs 9 in the multi-plate wet clutch is 8-10.
As a further illustration of the invention: the number of the friction plates of the friction plate group 8 is 6-8.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention can not only meet the requirement of limited slip function on muddy roads, but also cancel the limited slip function on good roads and turning roads, reduce the abrasion of tires and reduce the turning radius.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Description of the reference numerals
1. A drive bevel gear; 2. a driven bevel gear; 3. a reducer housing; 4. a shifting fork; 5. sliding the meshing sleeve; 6. a spline housing; 7. a tooth surface difference shell; 8. a friction plate set; 9. a spring; 10. a tooth back difference shell; 11. a left side gear.
Detailed Description
The invention will be further elucidated with reference to the drawings and reference numerals. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in FIG. 1, the embodiment of the invention discloses a novel main reducer with a limited slip differential lock, which comprises a differential assembly, a multi-plate wet clutch and a gear shifting mechanism;
a driving bevel gear 1 and a driven bevel gear 2 are installed in the main speed reducer, the driving bevel gear 1 is assembled on a speed reducer shell 3 through a bearing, the differential assembly is assembled on the speed reducer shell 3 through a bearing, and the driven bevel gear 2 is assembled on the differential assembly;
in the differential assembly, a planetary gear is fixed on a planetary gear shaft, the differential assembly further comprises a left half-axle gear 11, a tooth surface difference shell 7 and a tooth back difference shell 10, and a baffle plate for axially positioning the left half-axle gear 11 is installed on the tooth surface difference shell 7;
the tooth surface difference shell 7 and the tooth back difference shell 10 are fixedly connected with the driven bevel gear 2 through bolts.
The multi-disc wet clutch is of an up-and-down symmetrical structure, comprises a group of friction disc groups 8 and a group of cylindrical spiral springs 9 which are always in a compressed state, and is assembled in the tooth surface difference shell 7; the number of the friction plates of the friction plate group 8 is 6-8. The number of the springs 9 is 8-10.
The friction plate group 8 consists of a static friction plate and a dynamic friction plate, the right side of the friction plate group 8 is connected with the tooth surface difference shell 7 through a spring 9, and the left side of the friction plate group 8 is connected with the tooth back difference shell 10 and is tightly pressed through the tooth back difference shell 10. The inner side of the friction plate group 8 is connected with the spline housing 6.
The gear shifting mechanism comprises a shifting fork 4, a sliding meshing sleeve 5 and a spline sleeve 6; the sliding meshing sleeve 5 is movably connected with the left half axle gear 11, and the sliding meshing sleeve 5 can axially move under the action of the shifting fork 4.
The inner side of the spline housing 6 is provided with an internal spline, the outer side of the spline housing is provided with an external spline, and the inner side of the friction plate group 8 is connected with the external spline of the spline housing 6;
the sliding meshing sleeve 5 is arranged on the left side of the left half axle gear 11, end face teeth I are arranged at the right end of the sliding meshing sleeve, and end face teeth II are arranged at the left end of the left half axle gear;
the outer side of the sliding meshing sleeve 5 is provided with an external spline which is connected with an internal spline of the spline housing 6; the sliding meshing sleeve 5 is provided with a positioning shaft diameter connected with the differential shell, and the outer wall of the left side of the sliding meshing sleeve 5 is provided with an annular groove connected with the shifting fork 4;
the shifting fork 4 is arranged above the sliding meshing sleeve 5, the middle part of the shifting fork is hinged with the speed reducer shell 3, and a fork head is movably connected with the sliding meshing sleeve 5.
The sliding meshing sleeve 5 can move axially under the action of the shifting fork 4 and is connected with or disconnected from the left side gear 11.
The main speed reducer adopts a symmetrical planetary gear differential and a multi-piece wet type normally closed clutch.
The symmetrical planetary gear differential adopts an integral spherical surface. One side assembly baffle is as the axle shaft gear axial positioning, and this side axle shaft gear has terminal surface tooth II.
When the sliding meshing sleeve 5 is disengaged, the axial clearance between the tooth tops of the end face teeth I and the end face teeth II is 2.6-2.8 mm.
The working principle is as follows:
the sliding meshing sleeve 5 can move axially under the action of the shifting fork 4 and is connected with or disconnected from the left half axle gear face teeth II through the face teeth I.
After the sliding meshing sleeve 5 is jointed with the left half axle gear, the friction torque of the spring 9 acting on the friction plate set 8 acts on the sliding meshing sleeve 5 through the spline sleeve 6 to prevent the sliding meshing sleeve 5 from rotating, so that the left half axle gear 11 is prevented from rotating, and when the torque of the left half axle gear is large enough, the friction force of the friction plate set 8 can be overcome to realize the function of limited slip differential.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.

Claims (8)

1. The utility model provides a take novel main reducer of limited slip differential lock which characterized in that: comprises a differential assembly, a multi-plate wet clutch and a gear shifting mechanism;
a driving bevel gear (1) and a driven bevel gear (2) are installed in the main speed reducer, the driving bevel gear (1) is assembled on a speed reducer shell (3) through a bearing, the differential assembly is assembled on the speed reducer shell (3) through a bearing, and the driven bevel gear (2) is assembled on the differential assembly;
the differential assembly comprises a left half axle gear (11), a tooth surface difference shell (7) and a tooth back difference shell (10), wherein a baffle plate used for axially positioning the left half axle gear (11) is installed on the tooth surface difference shell (7);
the tooth surface difference shell (7) and the tooth back difference shell (10) are fixedly connected with the driven bevel gear (2) through bolts;
the multi-disc wet clutch is of an up-and-down symmetrical structure, comprises a group of friction disc sets (8) and a group of compressed cylindrical spiral springs (9), and is assembled in the tooth surface difference shell (7);
the gear shifting mechanism comprises a shifting fork (4), a sliding meshing sleeve (5) and a spline sleeve (6); the sliding meshing sleeve (5) is movably connected with the left half axle gear (11), and the sliding meshing sleeve (5) can axially move under the action of the shifting fork (4) and is connected with or disconnected from the left half axle gear (11).
2. The novel main reducer with the limited slip differential lock according to claim 1, characterized in that:
the friction plate set (8) consists of a static friction plate and a dynamic friction plate, the right side of the friction plate set (8) is connected with the tooth surface difference shell (7) through a spring (9), and the left side of the friction plate set is connected with the tooth back difference shell (10).
3. The novel final drive with a limited slip differential lock of claim 1, wherein:
the inner side of the spline housing (6) is provided with an internal spline, the outer side of the spline housing is provided with an external spline, and the inner side of the friction plate group (8) is connected with the external spline of the spline housing (6);
the sliding meshing sleeve (5) is arranged on the left side of the left half shaft gear (11), end face teeth I are arranged at the right end of the sliding meshing sleeve, and end face teeth II are arranged at the left end of the left half shaft gear (11);
the outer side of the sliding meshing sleeve (5) is provided with an external spline which is connected with an internal spline of the spline sleeve (6); the sliding meshing sleeve (5) is provided with a positioning shaft diameter connected with the differential shell, and the outer wall of the left side of the sliding meshing sleeve (5) is provided with an annular groove connected with the shifting fork (4);
the shifting fork (4) is arranged above the sliding meshing sleeve (5), the middle part of the shifting fork is hinged with the reducer shell (3), and the fork head is movably connected with the sliding meshing sleeve (5).
4. The novel final drive with a limited slip differential lock of claim 1, wherein: the main speed reducer adopts a symmetrical planetary gear differential and a multi-piece wet type normally closed clutch.
5. The novel final drive with a limited slip differential lock of claim 4, wherein: the symmetrical planetary gear differential adopts an integral spherical surface.
6. The novel main reducer with the limited slip differential lock of claim 3, characterized in that:
when the sliding meshing sleeve (5) is disengaged, the axial clearance between the tooth tops of the end face teeth I and the end face teeth II is 2.6-2.8 mm.
7. The novel final drive with limited slip differential lock of claim 1, wherein the number of the springs (9) in the multi-plate wet clutch is 8-10.
8. The novel main reducer with the limited slip differential lock according to claim 1, wherein the number of friction plates of the friction plate set (8) is 6-8.
CN202211029485.8A 2022-08-25 2022-08-25 Novel main speed reducer with limited slip differential lock Pending CN115355294A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211029485.8A CN115355294A (en) 2022-08-25 2022-08-25 Novel main speed reducer with limited slip differential lock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211029485.8A CN115355294A (en) 2022-08-25 2022-08-25 Novel main speed reducer with limited slip differential lock

Publications (1)

Publication Number Publication Date
CN115355294A true CN115355294A (en) 2022-11-18

Family

ID=84004287

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211029485.8A Pending CN115355294A (en) 2022-08-25 2022-08-25 Novel main speed reducer with limited slip differential lock

Country Status (1)

Country Link
CN (1) CN115355294A (en)

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