CN109185421B - Differential mechanism with self-adaptive locking function - Google Patents

Differential mechanism with self-adaptive locking function Download PDF

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Publication number
CN109185421B
CN109185421B CN201811407756.2A CN201811407756A CN109185421B CN 109185421 B CN109185421 B CN 109185421B CN 201811407756 A CN201811407756 A CN 201811407756A CN 109185421 B CN109185421 B CN 109185421B
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China
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positioning
box body
side plate
transmission shaft
shaft
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CN109185421A (en
Inventor
夏鑫
丁登峰
周国鹏
金鹏
吴超
徐超
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Hubei University of Science and Technology
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Hubei University of Science and Technology
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H48/00Differential gearings
    • F16H48/38Constructional details
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/02Gearboxes; Mounting gearing therein
    • F16H57/028Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H57/00General details of gearing
    • F16H57/04Features relating to lubrication or cooling or heating
    • F16H57/0412Cooling or heating; Control of temperature
    • F16H57/0415Air cooling or ventilation; Heat exchangers; Thermal insulations

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

Abstract

The invention provides a differential mechanism with a self-adaptive locking function, and belongs to the technical field of machinery. The differential mechanism comprises a shell, a box body, a left transmission shaft, a right transmission shaft, a partition plate, a left side plate and a right side plate, wherein the box body is of a closed cylinder structure, the partition plate is of a cylinder structure with the diameter smaller than that of the box body, the left side plate and the right side plate are perpendicular to the axis of the box body, the left transmission shaft is rotationally connected to the left side plate and the box body, the right transmission shaft is rotationally connected to the right side plate and the box body, the box body is rotationally connected in the shell, the inner end of the left transmission shaft is fixedly provided with a left combination disc, the inner end of a positioning shaft is connected with a cone column through a pressure spring, the outer end face of the cone column is provided with a jack, and the plug pin is inserted in the jack; the first positioning notch and the second positioning notch are matched with the outer wall of the cone column; the box body is provided with a transmission gear ring; a locking mechanism capable of driving the cone column to move inwards is arranged between the positioning shaft and the partition plate. The invention has the advantages of simple structure and the like.

Description

Differential mechanism with self-adaptive locking function
Technical Field
The invention belongs to the technical field of machinery, and relates to a differential mechanism with a self-adaptive locking function.
Background
The existing differential mechanism is almost realized by adopting a planetary gear offset rotating speed difference structure, namely the existing differential mechanism is a jaw type differential mechanism, a Torson type differential mechanism or a traditional differential mechanism, the traditional differential mechanism is seriously toothed and has larger noise through gear engagement, and the functions of limited slip, locking and the like cannot be realized, and the jaw type differential mechanism has larger improvement in noise, but has complex structure, and if the locking function is realized, the external force auxiliary elements such as electronic equipment and the like are required to be matched, the Torson type differential mechanism also has the problems of complex structure and the like, and the differential mechanism has the defects of difficult heat dissipation, large size and the like.
On the functional vehicles such as racing vehicles, toy racing vehicles, kart, off-road vehicles and the like, the differential frequency is extremely high, the frequency of a large differential speed ratio is also quite high, the defects of tooth beating, abrasion, noise, wheel slipping and the like of the traditional differential mechanism are aggravated, the frequency of the functional vehicles needing locking is also quite high, the locking of the functional vehicles is controlled by external equipment frequently, the performance of the vehicles is obviously unfavorable, the judging procedure is complex, and the risk of failure of electronic elements in the differential mechanism with severe environment is quite high.
Disclosure of Invention
The present invention is directed to solving the above-mentioned problems of the prior art, and provides a differential with an adaptive locking function, and the technical problem to be solved by the present invention is to simplify the structure and provide a differential with another structure.
The aim of the invention can be achieved by the following technical scheme: the differential mechanism with the self-adaptive locking function is characterized by comprising a shell, a box body, a left transmission shaft, a right transmission shaft, a partition plate, a left side plate and a right side plate, wherein the box body is of a closed cylinder structure, the partition plate is of a cylinder structure with the diameter smaller than that of the box body, the left side plate and the right side plate are perpendicular to the axis of the box body, the left transmission shaft is rotationally connected to the left side plate and the box body, the right transmission shaft is rotationally connected to the right side plate and the box body, the box body is rotationally connected to the inside of the shell, the inner end of the left transmission shaft is fixedly provided with a left combining disc, the inner end of the right transmission shaft is fixedly provided with a right combining disc, the inner side surface of the left combining disc is circumferentially and uniformly provided with a plurality of first positioning notches, the inner side surface of the right combining disc is circumferentially and uniformly provided with a second positioning notch corresponding to the first positioning notch, the inner end of the positioning shaft is provided with a bolt, the inner end of the positioning shaft is rotationally connected with a cone column through a pressure spring, the outer end of the cone column is provided with a jack and is inserted into the jack; the first positioning notch and the second positioning notch are matched with the outer wall of the cone column; the box body is provided with a transmission gear ring; and a locking mechanism capable of driving the cone column to move inwards is arranged between the positioning shaft and the partition plate.
The box body is arranged in the shell, the shell is fixed on a machine body of a running tool such as an automobile and the like, the engine drives the transmission gear ring to enable the box body to rotate, and each cone column is clamped into a gap between the first positioning notch and the second positioning notch to enable the left transmission shaft and the right transmission shaft to rotate along with the box body.
When relative resistance exists between the left transmission shaft and the right transmission shaft, the cone column is extruded to the outer side of the box body by the left combination disc and the right combination disc to extrude the pressure spring, the left transmission shaft and the right transmission shaft lose the driving force of the box body to the box body at the moment and can freely rotate so as to cope with the rotating speed difference, the cone column is continuously inserted into a gap between the first positioning notch and the second positioning notch under the action of the pressure spring so as to mesh the left combination disc and the right combination disc, the torque of the box body to the left combination disc is obtained again, and in the process, the box body, the left transmission shaft and the right transmission shaft can realize the transmission of the torque and can cope with the rotating speed difference between the left transmission shaft and the right transmission shaft.
Because the cone column is cone-shaped, and the first positioning notch and the second positioning notch are also in shapes matched with the first positioning notch and the second positioning notch, the resistance between the cone column inserted into the first positioning notch and the second positioning notch is smaller, and the cone column is in a rotating state, so that friction can be reduced.
Compared with the traditional differential mechanism, the structure is simple and reliable, the differential mechanism realizes the differential speed by losing torque, and the differential mechanism for transmission has serious tooth hitting between gears when the left high speed and the right low speed are switched to the right high speed and the left low speed, because of the action of inertia force, there is a large setback, which not only decreases comfort, but also has a slow response in the switching process, and the differential is realized by rolling the cone column, so that even though the switching action is as above, the abrasion is small, and the cone column does not delay the switching action.
When the cone column is separated from the first positioning notch and the second positioning notch, the cone column is still positioned between the left combining disc and the right combining disc, the reaction time from the limitation of separating from the first positioning notch and the second positioning notch to recombination is extremely short, even if the two are still differential, the cone column enters a combined state immediately after passing over the bulge between the adjacent first positioning notch or the second positioning notch, the power is prevented from being lost for a long time, and the torque transmission is ensured.
In the differential mechanism with the self-adaptive locking function, a plane bearing is arranged on the outer end face of the cone column, and two ends of the pressure spring are respectively connected with the plane bearing and the inner end of the positioning shaft.
The plane bearing can reduce the torsion of the cone column to the compression spring by rotation, so that the compression spring only receives the acting force in the axial direction, and the reliability and the transmission stability are improved.
In the differential mechanism with the self-adaptive locking function, a reflux cavity is formed between the partition plate and the inner wall of the box body, a left torrent cavity is formed among the partition plate, the box body and the left side plate, a right torrent cavity is formed among the partition plate, the box body and the right side plate, a driving cavity is formed among the partition plate, the left side plate and the right side plate, a plurality of left reflux holes communicated with the reflux cavity and the left torrent cavity are formed in the partition plate, and a plurality of right reflux holes communicated with the reflux cavity and the right torrent cavity are formed in the partition plate; the left side plate is provided with a plurality of left side torrent holes corresponding to the positioning shafts one by one, the right side plate is provided with a plurality of right side torrent holes corresponding to the positioning shafts one by one, and the tank body is filled with hydraulic oil.
In the rotating process of the box body, hydraulic oil can fill between each transmission part and the kinematic pair in the box body, so that on one hand, the box body can be lubricated, noise and abrasion are reduced, and on the other hand, local heat accumulation and high temperature can be eliminated.
In the differential with the self-adaptive locking function, the locking mechanism comprises a left turbine fixedly arranged on a left transmission shaft and a right turbine fixedly arranged on a right transmission shaft, an impeller positioned in a driving cavity is fixedly arranged on a positioning shaft, the positioning shaft is in threaded connection with a partition plate, and the outer end of the positioning shaft is connected with the inner wall of the box body through a reset spring; when hydraulic oil enters the driving cavity from the left shock hole or the right shock hole, the positioning shaft can be driven to rotate, and the positioning shaft can move inwards, so that the cone column can be tightly pressed in a gap between the first positioning notch and the second positioning notch.
When the rotation speed difference between the left transmission shaft and the right transmission shaft is the same or smaller, the rotation speed of the left turbine and the right turbine relative to the box body is zero or smaller, the driving force of liquid flow acting on the impeller from the left exciting flow hole or the right exciting flow hole is insufficient to stretch the return spring, so that the impeller hardly rotates, the positioning shaft does not move towards the inner end, when the rotation speed difference between the left transmission shaft and the right transmission shaft is larger, the liquid flow enters the hydraulic power in the driving cavity from the left exciting flow hole or the right exciting flow hole to drive the impeller to rotate, the impeller rotates and moves towards the inner end, the cone column is compressed, the main body column is tightly inserted between the first positioning notch and the second positioning notch, and the left combining disc and the right combining disc are locked, so that the left transmission shaft or the right transmission shaft is prevented from slipping, and running tools such as automobiles can cross obstacles or slipping road sections.
The hydraulic oil circulates among the driving cavity, the left torrent cavity, the right torrent cavity and the reflux cavity, so that the heat dissipation effect, the noise reduction effect and the lubrication effect are improved.
In the differential mechanism with the self-adaptive locking function, the box body is connected with a plurality of bolts in one-to-one correspondence with the positioning shafts in a threaded manner, two ends of the return spring are respectively connected between the positioning shafts and the bolts, and magnetic materials are plated outside the bolts.
The magnetic material is Ru-Fe-B, can adsorb the sweeps in the box, simultaneously, but the position of adjusting bolt makes reset spring's pretightning force change to adjust differential mechanism locking's intensity.
In the differential mechanism with the self-adaptive locking function, the left shock hole and the right shock hole corresponding to the same positioning shaft are respectively positioned at two sides of the positioning shaft.
By the arrangement, when liquid flows from the left exciting hole and the right exciting hole act on the impeller, the rotation directions of the impeller are consistent, namely, the impeller moves towards the inner end, and the left combining disc and the right combining disc are locked.
In the differential mechanism with the self-adaptive locking function, the locking mechanism comprises a left turbine fixedly arranged on a left transmission shaft and a right turbine fixedly arranged on a right transmission shaft, a pressing plate positioned in a driving cavity is fixedly arranged on a positioning shaft, an inclined guide surface is arranged on the upper surface of the pressing plate, the positioning shaft is longitudinally and slidably connected on a partition plate, and the outer end of the positioning shaft is connected with the inner wall of the box body through a reset spring; when hydraulic oil enters the driving cavity from the left shock hole or the right shock hole, the pressing plate can be driven to move downwards, and the positioning shaft moves inwards, so that the cone column can be tightly pressed in a gap between the first positioning notch and the second positioning notch.
When the rotation speed difference between the left transmission shaft and the right transmission shaft is the same or smaller, the rotation speed of the left turbine and the right turbine relative to the box body is zero or smaller, the driving force of liquid flow acting on the guide surface on the pressing plate from the left exciting hole or the right exciting hole is insufficient to stretch the reset spring, so that the positioning shaft hardly moves towards the inner end, when the rotation speed difference between the left transmission shaft and the right transmission shaft is larger, the hydraulic force entering the driving cavity from the left exciting hole or the right exciting hole can drive the pressing plate to move towards the inner side, the cone column is compressed, the main body column is tightly inserted between the first positioning notch and the second positioning notch, and the left combining disc and the right combining disc are locked, so that the left transmission shaft or the right transmission shaft is prevented from slipping, and running tools such as automobiles can cross obstacles or slipping road sections.
Compared with the first locking mechanism, the locking mechanism has short reaction time when unlocking, and the structure is simpler and more reliable.
The hydraulic oil circulates among the driving cavity, the left torrent cavity, the right torrent cavity and the reflux cavity, so that the heat dissipation effect, the noise reduction effect and the lubrication effect are improved.
In the differential mechanism with the self-adaptive locking function, curved surface smooth transition is arranged between the adjacent first positioning notches and between the adjacent second positioning notches.
Drawings
Fig. 1 is a schematic perspective view of the differential with a housing removed.
Fig. 2 is a schematic view of the differential mechanism in the unlocked state in the first embodiment.
Fig. 3 is a schematic view of the structure of the differential in the locked state in the first embodiment.
Fig. 4 is an enlarged view of a portion a in fig. 2.
Fig. 5 is an enlarged view of a portion B in fig. 3.
Fig. 6 is a schematic diagram of the principle of the hydraulic force acting on the impeller in the first embodiment.
Fig. 7 is a schematic view of the differential mechanism in the second embodiment in an unlocked state.
Fig. 8 is a schematic structural view of the differential in the locked state in the second embodiment.
Fig. 9 is an enlarged view of a portion C in fig. 7.
Fig. 10 is an enlarged view of a portion D in fig. 8.
Fig. 11 is a schematic diagram of the principle of hydraulic force acting on the platen in the second embodiment.
In the figure, 1, a box body; 11. a partition plate; 12. a left side plate; 13. a right side plate; 14. a transmission gear ring; 15. a reflow chamber; 16. a left torrent cavity; 17. a right torrent chamber; 18. a drive chamber; 21. a left transmission shaft; 22. a right transmission shaft; 23. a left combining plate; 24. a right combining disc; 25. positioning a first notch; 26. positioning a second notch; 31. positioning a shaft; 32. a plug pin; 33. a pressure spring; 34. a cone column; 35. a jack; 36. a planar bearing; 41. a left reflow hole; 42. a right reflow hole; 43. a left laser hole; 44. a right laser hole; 45. a left turbine; 46. a right turbine; 51. an impeller; 52. a return spring; 53. a bolt; 54. a pressing plate; 55. a guide surface.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
Embodiment one:
as shown in fig. 1, 2 and 3, the differential mechanism comprises a shell, a box body 1, a left transmission shaft 21, a right transmission shaft 22, a partition plate 11, a left side plate 12 and a right side plate 13, wherein the box body 1 is of a closed cylinder structure, the partition plate 11 is of a cylinder structure with the diameter smaller than that of the box body 1, the left side plate 12 and the right side plate 13 are perpendicular to the axis of the box body 1, the left transmission shaft 21 is rotationally connected to the left side plate 12 and the box body 1, the right transmission shaft 22 is rotationally connected to the right side plate 13 and the box body 1, the box body 1 is rotationally connected to the inside of the shell, the inner end of the left transmission shaft 21 is fixedly provided with a left combining disc 23, the inner end of the right transmission shaft 22 is fixedly provided with a right combining disc 24, the inner side surface of the left combining disc 23 is circumferentially uniformly provided with a plurality of positioning notches I25, the inner side surface of the right combining disc 24 is circumferentially uniformly provided with positioning notches II 26 corresponding to the positioning notches I25, the partition plate 11 is provided with a plurality of positioning shafts 31, the inner ends of the positioning shafts 31 are provided with bolts 32, the inner ends of the positioning shafts 31 are rotationally connected with a cone column 34 through a pressure spring 33, the outer end faces of the cone column 34 are provided with the positioning pins 35, and the jacks 35 are inserted into the jacks 35; the first positioning notch 25 and the second positioning notch 26 are matched with the outer wall of the cone column 34; the box body 1 is provided with a transmission gear ring 14; a lock mechanism capable of driving the tapered column 34 to move inward is provided between the positioning shaft 31 and the partition plate 11.
The case 1 is placed in a housing, the housing is fixed on a chassis of a running tool such as an automobile, the running is straight, the engine drives the transmission gear ring 14 to rotate the case 1, and each cone column 34 is clamped into a gap between the first positioning notch 25 and the second positioning notch 26 to rotate the left transmission shaft 21 and the right transmission shaft 22 together with the case 1.
When there is relative resistance between the left transmission shaft 21 and the right transmission shaft 22, the cone column 34 is extruded by the left combination disc 23 and the right combination disc 24 to shrink to the outer side of the box 1, and extrudes the pressure spring 33, the left transmission shaft 21 and the right transmission shaft 22 lose the driving force of the box 1 to the box 1 at the moment, and can freely rotate, so as to cope with the rotating speed difference, the cone column 34 is continuously inserted into the gap between the first positioning notch 25 and the second positioning notch 26 under the action of the pressure spring 33, so as to mesh the left combination disc 23 and the right combination disc 24, so that the torque of the box 1 to the box 1 is reacquired, and in the process, the box 1, the left transmission shaft 21 and the right transmission shaft 22 can realize the torque transmission, and can cope with the rotating speed difference between the left transmission shaft 21 and the right transmission shaft 22.
Because the cone column 34 is cone-shaped, and the first positioning notch 25 and the second positioning notch 26 are also in shapes matched with the cone column, the resistance of the cone column 34 inserted between the first positioning notch 25 and the second positioning notch 26 is smaller, and the cone column 34 is in a rotating state, so that friction can be reduced.
Compared with the traditional differential mechanism, the structure is simple and reliable, the differential mechanism realizes the differential speed by losing torque, and the differential mechanism is driven, such as the differential mechanism with high speed on the left side and low speed on the right side, when the differential mechanism is switched to the high speed on the right side and the low speed on the left side, tooth striking among gears is serious, due to the action of inertia force, great setback exists, the comfort is damaged, the reaction is slow in the switching process, the differential mechanism is realized by rolling the cone column 34, even if the switching action is as above, the abrasion is small, and the cone column 34 can not delay the switching action.
When the cone column 34 is separated from the first positioning notch 25 and the second positioning notch 26, the cone column 34 is still positioned between the left combining disc 23 and the right combining disc 24, the reaction time from the limitation of separating from the first positioning notch 25 and the second positioning notch 26 to recombination is extremely short, even if the two are still differential, the cone column 34 enters the combining state immediately after crossing the bulge between the adjacent first positioning notch 25 or the second positioning notch 26, so that the power is prevented from being lost for a long time, and the torque transmission is ensured.
The outer end face of the cone column 34 is provided with a plane bearing 36, and two ends of the pressure spring 33 are respectively connected with the plane bearing 36 and the inner end of the positioning shaft 31. The planar bearing 36 can reduce the torsion of the rotation of the cone column 34 to the compression spring 33, so that the compression spring 33 only receives the acting force in the axial direction, and the reliability and the transmission stability are improved.
A reflux cavity 15 is formed between the baffle 11 and the inner wall of the box body 1, a left torrent cavity 16 is formed among the baffle 11, the box body 1 and the left side plate 12, a right torrent cavity 17 is formed among the baffle 11, the box body 1 and the right side plate 13, a driving cavity 18 is formed among the baffle 11, the left side plate 12 and the right side plate 13, a plurality of left reflux holes 41 which are communicated with the reflux cavity 15 and the left torrent cavity 16 are formed on the baffle 11, and a plurality of right reflux holes 42 which are communicated with the reflux cavity 15 and the right torrent cavity 17 are formed on the baffle 11; the left side plate 12 is provided with a plurality of left side torrent holes 43 corresponding to the positioning shafts 31 one by one, the right side plate 13 is provided with a plurality of right side torrent holes 44 corresponding to the positioning shafts 31 one by one, and the tank 1 is filled with hydraulic oil.
In the rotating process of the box body 1, hydraulic oil can fill between each transmission part and the kinematic pair in the box body 1, so that on one hand, the box body can be lubricated, noise and abrasion can be reduced, and on the other hand, local heat accumulation and high temperature can be eliminated.
As shown in fig. 4, 5 and 6, the locking mechanism comprises a left turbine 45 fixedly arranged on the left transmission shaft 21 and a right turbine 46 fixedly arranged on the right transmission shaft 22, an impeller 51 positioned in the driving cavity 18 is fixedly arranged on the positioning shaft 31, the positioning shaft 31 is in threaded connection with the partition plate 11, and the outer end of the positioning shaft 31 is connected with the inner wall of the box body 1 through a return spring 52; when hydraulic oil enters the driving cavity 18 from the left shock hole 43 or the right shock hole 44, the positioning shaft 31 can be driven to rotate, and the positioning shaft 31 is moved inwards, so that the cone column 34 can be tightly pressed in a gap between the first positioning notch 25 and the second positioning notch 26.
When the rotational speed of the left drive shaft 21 and the right drive shaft 22 is the same or the rotational speed difference is small, the rotational speed of the left turbine 45 and the right turbine 46 relative to the case 1 is zero or small, the driving force of the liquid flow acting on the impeller 51 from the left torrent hole 43 or the right torrent hole 44 is insufficient to stretch the return spring 52, so that the impeller 51 hardly rotates, the positioning shaft 31 does not move to the inner end, when the rotational speed difference between the left drive shaft 21 and the right drive shaft 22 is large, the liquid flow entering the driving cavity 18 from the left torrent hole 43 or the right torrent hole 44 can drive the impeller 51 to rotate, the impeller 51 rotates and moves to the inner end, the cone column 34 is compressed, the main body column is tightly inserted between the positioning notch one 25 and the positioning notch two 26, and the multi-left combining disc 23 and the right combining disc 24 are locked, so that the left drive shaft 21 or the right drive shaft 22 is prevented from slipping, and running tools such as automobiles can go over obstacles or slipping road sections.
The hydraulic oil circulates among the driving cavity 18, the left side torrent cavity 16, the right side torrent cavity 17 and the reflux cavity 15, so that the heat dissipation effect, the noise reduction effect and the lubrication effect are improved.
The box body 1 is connected with a plurality of bolts 53 which are in one-to-one correspondence with the positioning shafts 31 in a threaded manner, two ends of the return spring 52 are respectively connected between the positioning shafts 31 and the bolts 53, and magnetic materials are plated outside the bolts 53. The magnetic material is Ru-Fe-B, can adsorb the sweeps in the box 1, simultaneously, but the position of adjusting bolt 53 makes reset spring 52's pretightning force change to adjust differential mechanism locking's intensity.
The left exciting flow hole and the right exciting flow hole corresponding to the same positioning shaft 31 are respectively positioned at two sides of the positioning shaft 31. This arrangement ensures that when the flow of liquid from the left and right pumping holes acts on the impeller 51, the impeller 51 rotates in the same direction, i.e., moves inward, to lock the left and right coupling disks 23 and 24.
Curved surface smooth transition is arranged between the adjacent first positioning notch 25 and between the adjacent second positioning notch 26.
Example two
The contents of this embodiment are substantially the same as the first embodiment, except that: as shown in fig. 7, 8, 9, 10 and 11, the locking mechanism comprises a left turbine 45 fixedly arranged on the left transmission shaft 21 and a right turbine 46 fixedly arranged on the right transmission shaft 22, a pressing plate 54 positioned in the driving cavity 18 is fixedly arranged on the positioning shaft 31, an inclined guide surface 55 is arranged on the upper surface of the pressing plate 54, the positioning shaft 31 is longitudinally and slidably connected on the partition plate 11, and the outer end of the positioning shaft 31 is connected with the inner wall of the box body 1 through a return spring 52; when hydraulic oil enters the driving cavity 18 from the left shock hole 43 or the right shock hole 44, the pressing plate 54 can be driven to move downwards, the positioning shaft 31 moves inwards, and the cone column 34 can be tightly pressed in a gap between the first positioning notch 25 and the second positioning notch 26.
When the rotational speed of the left drive shaft 21 and the right drive shaft 22 is the same or the rotational speed difference is small, the rotational speed of the left turbine 45 and the right turbine 46 relative to the case 1 is zero or small, the driving force of the liquid flow acting on the guide surface 55 on the pressing plate 54 from the left shock hole 43 or the right shock hole 44 is insufficient to stretch the return spring 52, so that the positioning shaft 31 hardly moves toward the inner end, when the rotational speed difference between the left drive shaft 21 and the right drive shaft 22 is large, the liquid flow entering the driving cavity 18 from the left shock hole 43 or the right shock hole 44 can drive the pressing plate 54 to move toward the inner side, the cone column 34 is compressed, the main body column is tightly inserted between the positioning notch one 25 and the positioning notch two 26, and the left combining disc 23 and the right combining disc 24 are locked, so that the left drive shaft 21 or the right drive shaft 22 is prevented from slipping, and running tools such as automobiles can go over obstacles or slipping road sections.
Compared with the first locking mechanism, the locking mechanism has short reaction time when unlocking, and the structure is simpler and more reliable.
The hydraulic oil circulates among the driving cavity 18, the left side torrent cavity 16, the right side torrent cavity 17 and the reflux cavity 15, so that the heat dissipation effect, the noise reduction effect and the lubrication effect are improved.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (3)

1. The differential mechanism with the self-adaptive locking function is characterized by comprising a shell, a box body (1), a left transmission shaft (21), a right transmission shaft (22), a partition plate (11), a left side plate (12) and a right side plate (13), wherein the box body (1) is of a closed cylinder structure, the partition plate (11) is of a cylinder structure with the diameter smaller than that of the box body (1), the left side plate (12) and the right side plate (13) are perpendicular to the axis of the box body (1), the left transmission shaft (21) is rotationally connected to the left side plate (12) and the box body (1), the right transmission shaft (22) is rotationally connected to the right side plate (13) and the box body (1), the inner end of the left transmission shaft (21) is fixedly provided with a left combining disc (23), the inner side surface of the right transmission shaft (22) is fixedly provided with a right combining disc (24), the inner side surface of the left combining disc (23) is circumferentially uniformly provided with a plurality of positioning notches (25), the inner side surface of the right combining disc (24) is circumferentially uniformly provided with a plurality of positioning notches (31) which are axially corresponding to the first positioning bolts (31), the inner end of the positioning shaft (31) is connected with a cone column (34) through a pressure spring (33), the outer end surface of the cone column (34) is provided with a jack (35), and the plug pin (32) is inserted into the jack (35); the first positioning notch (25) and the second positioning notch (26) are matched with the outer wall of the cone column (34); the box body (1) is provided with a transmission gear ring (14); a locking mechanism capable of driving the cone column (34) to move inwards is arranged between the positioning shaft (31) and the partition plate (11);
a plane bearing (36) is arranged on the outer end surface of the cone column (34), and two ends of the pressure spring (33) are respectively connected with the plane bearing (36) and the inner end of the positioning shaft (31);
a reflux cavity (15) is formed between the partition plate (11) and the inner wall of the box body (1), a left torrent cavity (16) is formed among the partition plate (11), the box body (1) and the left side plate (12), a right torrent cavity (17) is formed among the partition plate (11), the box body (1) and the right side plate (13), a driving cavity (18) is formed among the partition plate (11), the left side plate (12) and the right side plate (13), a plurality of left reflux holes (41) which are communicated with the reflux cavity (15) and the left torrent cavity (16) are formed in the partition plate (11), and a plurality of right reflux holes (42) which are communicated with the reflux cavity (15) and the right torrent cavity (17) are formed in the partition plate (11); a plurality of left torrent holes (43) which are in one-to-one correspondence with the positioning shafts (31) are formed in the left side plate (12), a plurality of right torrent holes (44) which are in one-to-one correspondence with the positioning shafts (31) are formed in the right side plate (13), and hydraulic oil is filled in the box body (1);
the locking mechanism comprises a left turbine (45) fixedly arranged on a left transmission shaft (21) and a right turbine (46) fixedly arranged on a right transmission shaft (22), a pressing plate (54) positioned in the driving cavity (18) is fixedly arranged on the positioning shaft (31), an inclined guide surface (55) is arranged on the upper surface of the pressing plate (54), the positioning shaft (31) is longitudinally and slidably connected on the partition plate (11), and the outer end of the positioning shaft (31) is connected with the inner wall of the box body (1) through a return spring (52); when hydraulic oil enters the driving cavity (18) from the left exciting flow hole (43) or the right exciting flow hole (44), the pressing plate (54) can be driven to move downwards, the positioning shaft (31) is moved inwards, and the cone column (34) can be tightly pressed in a gap between the first positioning notch (25) and the second positioning notch (26);
curved surface smooth transition is arranged between the adjacent first positioning gaps (25) and between the adjacent second positioning gaps (26).
2. The differential mechanism with the self-adaptive locking function according to claim 1, wherein a plurality of bolts (53) which are in one-to-one correspondence with the positioning shafts (31) are connected to the box body (1) in a threaded mode, two ends of the return spring (52) are respectively connected between the positioning shafts (31) and the bolts (53), and magnetic materials are plated outside the bolts (53).
3. The differential with the self-adaptive locking function according to claim 2, wherein the left exciting hole and the right exciting hole corresponding to the same positioning shaft (31) are respectively positioned at two sides of the positioning shaft (31).
CN201811407756.2A 2018-11-23 2018-11-23 Differential mechanism with self-adaptive locking function Active CN109185421B (en)

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CN209067792U (en) * 2018-11-23 2019-07-05 湖北科技学院 A kind of diff-lock of quick release
CN209511054U (en) * 2018-11-23 2019-10-18 湖北科技学院 A kind of hydraulic locking mechanism on differential mechanism
CN209511055U (en) * 2018-11-23 2019-10-18 湖北科技学院 A kind of differential mechanism with adaptive latch functions

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DE102006044701A1 (en) * 2006-09-22 2008-04-03 Daimler Ag Differential mechanism comprises a construction unit counter-rotating via a differential gear with a second construction unit and coupled in the peripheral direction to a loop spring having friction contact with/surrounding the second unit
CN202100678U (en) * 2011-06-03 2012-01-04 湘潭电机股份有限公司 Forced locking differential mechanism
CN202215702U (en) * 2011-09-16 2012-05-09 杨勇方 Differential locking mechanism capable of controlling automatically
CN103398155A (en) * 2013-08-20 2013-11-20 蒋保太 Dual-clutch differential mechanism
CN105003618A (en) * 2015-05-09 2015-10-28 陈学福 Hydraulic driving indirect friction locking differential mechanism
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CN209511055U (en) * 2018-11-23 2019-10-18 湖北科技学院 A kind of differential mechanism with adaptive latch functions

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