CN115163780B - Multi-drive inter-axle clutch device linked with differential lock - Google Patents
Multi-drive inter-axle clutch device linked with differential lock Download PDFInfo
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- CN115163780B CN115163780B CN202210761696.4A CN202210761696A CN115163780B CN 115163780 B CN115163780 B CN 115163780B CN 202210761696 A CN202210761696 A CN 202210761696A CN 115163780 B CN115163780 B CN 115163780B
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- 230000007246 mechanism Effects 0.000 claims abstract description 70
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 238000000926 separation method Methods 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 6
- 230000003068 static effect Effects 0.000 claims description 2
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
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Classifications
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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
- F16H48/00—Differential gearings
- F16H48/20—Arrangements for suppressing or influencing the differential action, e.g. locking devices
- F16H48/30—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means
- F16H48/32—Arrangements for suppressing or influencing the differential action, e.g. locking devices using externally-actuatable means using fluid pressure actuators
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/08—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member
- F16D25/082—Fluid-actuated clutches with fluid-actuated member not rotating with a clutching member the line of action of the fluid-actuated members co-inciding with the axis of rotation
- F16D25/083—Actuators therefor
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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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D25/00—Fluid-actuated clutches
- F16D25/12—Details not specific to one of the before-mentioned types
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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
- F16H48/00—Differential gearings
- F16H48/38—Constructional details
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid Mechanics (AREA)
- Retarders (AREA)
- Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
Abstract
The invention relates to a multi-drive inter-axle clutch device linked with a differential lock, which comprises a shell, a push rod shaft, an inter-axle differential lock shifting fork, an inter-axle differential meshing sleeve and a clutch shifting fork, wherein a first inflation cavity is inflated to drive the push rod shaft to move towards the rear side; the inter-axle differential lock shifting fork is connected with an inter-axle differential meshing sleeve, and the inter-axle differential meshing sleeve is coaxially arranged with the rear side gear and the front side gear; the second air charging cavity is charged to drive the clutch shifting fork to move to the rear side; the clutch shifting fork is connected with the clutch mechanism meshing sleeve, and the clutch mechanism meshing sleeve is arranged in a key slot formed by combining the rear side gear and the through shaft. While keeping the function of the inter-axle differential lock of the drive axle, the transmission of power is interrupted through the clutch device, the rear end of the through shaft is provided with the meshing sleeve, the transmission of power to the third shaft is interrupted through spline meshing and uncoupling, the inter-axle differential lock is linked with the clutch device, and the inter-axle differential lock is started while the clutch device is opened, so that misoperation is avoided.
Description
Technical Field
The invention relates to the technical field of automobile manufacturing, in particular to a multi-drive-axle clutch device linked with a differential lock.
Background
For a multi-drive axle vehicle, when the vehicle is in an empty or non-full state, the power transmitted to the third axle drive axle can be interrupted, and the rear axle drive axle is lifted and suspended, namely, the vehicle is switched to a single-axle drive mode. The transmission efficiency loss of the drive axle can be reduced by the mode, when the vehicle is in no-load or non-full-load state, the multiple drive axles are in a low-load state, and the transmission efficiency is characterized by lower efficiency under the low-load rate, so that the drive axle is in medium and high load when the drive axle is switched to single-axle drive, thereby providing the transmission efficiency, reducing the consumption of fuel oil, and reducing the fuel oil consumption by more than 5 percent each year.
When the multi-drive axle vehicle runs on a turning or uneven road surface, the differential mechanism can be internally glidingly ground due to the instant speed difference, and in order to realize the power interruption of a third shaft, the prior art scheme mainly adopts two modes to solve: firstly, a power clutch mode of a through drive axle is adopted, an inter-axle differential mechanism is canceled, and a power clutch system is arranged at the position of the axle differential mechanism; and a clutch system is additionally arranged at the output end of the intermediate axle, and the output shaft of the clutch device and the output shaft of the through drive axle are meshed by pushing the spline through a shifting fork to realize power interruption or connection.
The clutch device in the first mode loses the function of the inter-axle differential mechanism, so that the stress of the corresponding main shaft and the cylindrical gear is increased, the abrasion of parts is accelerated, and the service life of parts is reduced; meanwhile, when turning and uneven road surfaces are caused, the tire wear and the internal stress of a transmission chain are increased; in order to ensure the stability of the whole vehicle and prevent the tires from slipping, the whole vehicle needs to adopt a traction control system to balance the rotation speed of the wheels. The clutch device in the second mode adopts a two-section type through shaft, and power interruption or transmission is realized in a spline engagement mode, the clutch device cannot be linked with an inter-shaft differential lock, misoperation is easy to occur, if a rear axle is separated but the differential lock is not opened, a transmission shaft, a gearbox and an engine are caused to idle at high speed, and power cannot be transmitted to a tire; the clutch device is arranged at the output end of the middle bridge, and the axial arrangement occupies a large space, which is not beneficial to the arrangement and modularized design of the transmission shafts between the bridges.
Disclosure of Invention
In order to solve the problems, the invention provides a multi-drive inter-axle clutch device linked with a differential lock, which keeps the function of the differential lock between drive axle shafts and simultaneously interrupts the transmission of power through the clutch device.
The technical scheme adopted by the invention is as follows: a clutch device between multiple drive axles linked with differential lock is characterized in that: the device comprises a shell, a push rod shaft, an inter-shaft differential lock shifting fork, an inter-shaft differential meshing sleeve and a clutch shifting fork, wherein the push rod shaft is arranged in the shell, a first air inflation cavity is arranged between the front end part of the push rod shaft and the shell, and the first air inflation cavity is inflated to drive the push rod shaft to move towards the rear side; the inter-axle differential lock shifting fork and the clutch shifting fork are both arranged on the push rod shaft, and the inter-axle differential lock shifting fork is axially limited at two sides on the push rod shaft and moves in a translational manner synchronously with the push rod shaft; the clutch shifting fork is in clearance fit with the push rod shaft, one side is axially limited, and the clutch shifting fork is kept static when the push rod moves axially at the rear side; the inter-axle differential lock shifting fork is connected with an inter-axle differential meshing sleeve, the inter-axle differential meshing sleeve is coaxially arranged with the rear side gear and the front side gear, and the inter-axle differential meshing sleeve and the front side gear can be meshed for transmission; a second air inflation cavity and a clutch mechanism push rod are arranged between the clutch shifting fork and the shell, the second air inflation cavity is inflated, and the clutch shifting fork is driven to move to the rear side by the clutch mechanism push rod; the clutch shifting fork is connected with the clutch mechanism meshing sleeve, and the clutch mechanism meshing sleeve is arranged in a key slot formed by combining the rear side gear and the through shaft; a locking ball is arranged between the clutch shifting fork and the shell.
Preferably, when the vehicle is driven by a plurality of drive axles and the inter-axle differential lock needs to be started, the first inflation cavity is inflated, and the air pressure pushes the push rod shaft to axially translate; the clutch shifting fork is in clearance fit with the push rod shaft and is kept motionless under the action of the locking balls, the clutch meshing sleeve, the rear side gear and the through shaft are connected through key meshing, power can still be transmitted to the through shaft, namely, the power is transmitted to the rear axle, and the interaxle differential lock works.
Preferably, when the vehicle is in idle load or low load, the vehicle is switched to a single-axle driving mode, namely, when the power of a through axle, namely, a rear axle is interrupted, the second inflation cavity is inflated, the clutch mechanism push rod 8 pushes the clutch shift fork to move in a translational mode, the clutch shift fork overcomes the locking force of the locking ball, the spring below the locking ball is compressed, the locking ball is sunk into the groove, the clutch shift fork pushes the clutch mechanism meshing sleeve to be separated from the rear side gear, and simultaneously, when the push rod shaft moves in a translational mode towards the rear side, the inter-axle differential lock shift fork synchronously pushes the combination teeth on the end face of the inter-axle differential meshing sleeve to be meshed with the combination teeth on the end face of the front side gear, namely, the inter-axle differential lock and the rear axle separation mechanism synchronously move, so that the inter-axle differential lock and the rear axle separation mechanism are linked, and idle running of a power chain caused by unlocking of the inter-axle differential lock is avoided when the vehicle is switched to the single-axle mode.
Further, the inflation and deflation of the first inflation cavity and the second inflation cavity are controlled by an inter-axle speed lock control mechanism.
Further, the inter-axle speed lock control mechanism comprises a three-gear rocker switch and a sensor, when the switch is pressed to the I gear, a differential lock function is started, and a sensor feedback signal displays that the inter-axle differential lock is locked on a cab instrument; when the switch is pressed to II gear, the functions of rear axle separation and inter-axle differential locking are started and the rear axle is lifted, and a sensor feedback signal displays 'the rear axle is separated and lifted and the inter-axle differential locking is locked' on a cab instrument; when the switch is pressed to the O gear, the rear axle separation and inter-axle differential locking functions are closed, the rear axle is put down, and the state of the multi-drive axle is restored. .
Further, the sensor is arranged at the front end of the push rod shaft.
Further, the first inflation cavity is connected with the air storage cylinder through the first relay, the second inflation cavity is connected with the air storage cylinder through the second relay, and the inter-shaft speed lock control mechanism 1 controls the disconnection or the suction of the first relay and the second relay.
Preferably, the clutch device is located above the final drive.
Preferably, a return spring is arranged between the rear end of the push rod shaft and the shell.
Preferably, the clutch mechanism engagement sleeve is in spline fit with the rear side gear and the through shaft.
The beneficial effects obtained by the invention are as follows: while keeping the function of the inter-axle differential lock of the drive axle, the transmission of power is interrupted through the clutch device, the rear end of the through shaft is provided with the meshing sleeve, the transmission of power to the third shaft is interrupted through spline meshing and uncoupling, the inter-axle differential lock is linked with the clutch device, and the inter-axle differential lock is started while the clutch device is opened, so that misoperation is avoided. The design scheme has reasonable spatial design scheme and can avoid spatial arrangement interference.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a control schematic diagram of the present invention;
Reference numerals: 1. a housing; 2. a push rod shaft; 3. an inter-axle differential lock fork; 4. differential engagement sleeve between shafts; 5. a clutch fork; 6. a locking ball; 7. a return spring; 8. a clutch mechanism push rod; 9. a rear side gear; 10. a second plenum chamber; 11. a first inflation chamber; 12. engaging sleeve of clutch mechanism; 13. a front side gear; 14. a three-gear rocker switch; 15. a through shaft; 16. a sensor; 17. an air cylinder; 18. a first electromagnetic valve; 19. and a second electromagnetic valve.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1-2, the multi-drive inter-axle clutch device linked with the differential lock comprises a shell 1, a push rod shaft 2, an inter-axle differential lock shifting fork 3, an inter-axle differential meshing sleeve 4 and a clutch shifting fork 5, wherein the push rod shaft 2 is arranged in the shell 1, a first air inflation cavity 11 is arranged between the front end part of the push rod shaft 2 and the shell, and the first air inflation cavity 11 is inflated to drive the push rod shaft 2 to move towards the rear side; the inter-axle differential lock shifting fork 3 and the clutch shifting fork 5 are both arranged on the push rod shaft 2, and the inter-axle differential lock shifting fork 3 is axially limited at two sides on the push rod shaft 2 and moves in a translational manner synchronously with the push rod shaft 2; the clutch shifting fork 5 is in clearance fit with the push rod shaft 2, one side is axially limited, and when the push rod shaft 2 moves to the rear side, the clutch shifting fork 5 is kept stationary; the inter-axle differential lock shifting fork 3 is connected with the inter-axle differential meshing sleeve 4, the inter-axle differential meshing sleeve 4 is coaxially arranged with the rear side gear 9 and the front side gear 13, and the inter-axle differential meshing sleeve 4 and the front side gear 13 can be meshed for transmission; a second air inflation cavity and a clutch mechanism push rod 8 are arranged between the clutch shifting fork 5 and the shell, the second air inflation cavity is inflated, and the clutch shifting fork 5 is driven to move to the rear side by the clutch mechanism push rod 8; the clutch shifting fork 5 is connected with a clutch mechanism meshing sleeve 12, and the clutch mechanism meshing sleeve 12 is arranged in a key slot formed by combining the rear side gear 9 and the through shaft 15; a locking ball 6 is arranged between the clutch shifting fork 5 and the shell.
Embodiment one: the multi-drive inter-axle clutch device linked with the differential lock comprises a shell 1, a push rod shaft 2, an inter-axle differential lock shifting fork 3, an inter-axle differential meshing sleeve 4 and a clutch shifting fork 5, wherein the push rod shaft 2 is arranged in the shell 1, a first air inflation cavity 11 is arranged between the front end part and the shell, and the first air inflation cavity 11 is inflated to drive the push rod shaft 2 to move towards the rear side; the inter-axle differential lock shifting fork 3 and the clutch shifting fork 5 are both arranged on the push rod shaft 2, and the inter-axle differential lock shifting fork 3 is axially limited at two sides on the push rod shaft 2 and moves in a translational manner synchronously with the push rod shaft 2; the clutch shifting fork 5 is in clearance fit with the push rod shaft 2, one side is axially limited, and when the push rod shaft 2 moves to the rear side, the clutch shifting fork 5 is kept stationary; the inter-axle differential lock shifting fork 3 is connected with the inter-axle differential meshing sleeve 4, the inter-axle differential meshing sleeve 4 is coaxially arranged with the rear side gear 9 and the front side gear 13, and the inter-axle differential meshing sleeve 4 and the front side gear 13 can be meshed for transmission; a second air inflation cavity and a clutch mechanism push rod 8 are arranged between the clutch shifting fork 5 and the shell, the second air inflation cavity is inflated, and the clutch shifting fork 5 is driven to move to the rear side by the clutch mechanism push rod 8; the clutch shifting fork 5 is connected with a clutch mechanism meshing sleeve 12, and the clutch mechanism meshing sleeve 12 is arranged in a key slot formed by combining the rear side gear 9 and the through shaft 15; a locking ball 6 is arranged between the clutch shifting fork 5 and the shell.
When the vehicle is driven by a plurality of drive axles and the inter-axle differential lock needs to be started, the first inflation cavity 11 is inflated, and the air pressure pushes the push rod shaft 2 to axially translate; the clutch shifting fork 5 is in clearance fit with the push rod shaft 2, the clutch shifting fork 5 is kept still under the action of the locking ball 6, the clutch engagement sleeve 12, the rear side gear 9 and the through shaft 15 are connected through key engagement, power can still be transmitted to the through shaft 15, namely, the power is transmitted to the rear axle, and the inter-axle differential lock works.
Embodiment two: the multi-drive inter-axle clutch device linked with the differential lock comprises a shell 1, a push rod shaft 2, an inter-axle differential lock shifting fork 3, an inter-axle differential meshing sleeve 4 and a clutch shifting fork 5, wherein the push rod shaft 2 is arranged in the shell 1, a first air inflation cavity 11 is arranged between the front end part and the shell, and the first air inflation cavity 11 is inflated to drive the push rod shaft 2 to move towards the rear side; the inter-axle differential lock shifting fork 3 and the clutch shifting fork 5 are both arranged on the push rod shaft 2, and the inter-axle differential lock shifting fork 3 is axially limited at two sides on the push rod shaft 2 and moves in a translational manner synchronously with the push rod shaft 2; the clutch shifting fork 5 is in clearance fit with the push rod shaft 2, one side is axially limited, and when the push rod shaft 2 moves to the rear side, the clutch shifting fork 5 is kept stationary; the inter-axle differential lock shifting fork 3 is connected with the inter-axle differential meshing sleeve 4, the inter-axle differential meshing sleeve 4 is coaxially arranged with the rear side gear 9 and the front side gear 13, and the inter-axle differential meshing sleeve 4 and the front side gear 13 can be meshed for transmission; a second air inflation cavity and a clutch mechanism push rod 8 are arranged between the clutch shifting fork 5 and the shell, the second air inflation cavity is inflated, and the clutch shifting fork 5 is driven to move to the rear side by the clutch mechanism push rod 8; the clutch shifting fork 5 is connected with a clutch mechanism meshing sleeve 12, and the clutch mechanism meshing sleeve 12 is arranged in a key slot formed by combining the rear side gear 9 and the through shaft 15; a locking ball 6 is arranged between the clutch shifting fork 5 and the shell.
When the vehicle is driven by a plurality of drive axles and the inter-axle differential lock needs to be started, the first inflation cavity 11 is inflated, and the air pressure pushes the push rod shaft 2 to axially translate; the clutch shifting fork 5 is in clearance fit with the push rod shaft 2, the clutch shifting fork 5 is kept still under the action of the locking ball 6, the clutch engagement sleeve 12, the rear side gear 9 and the through shaft 15 are connected through key engagement, power can still be transmitted to the through shaft 15, namely, the power is transmitted to the rear axle, and the inter-axle differential lock works.
When the vehicle is in idle load or low load, the vehicle is switched to a single-axle driving mode, namely, the power of a through shaft 15, namely, a rear axle is interrupted, the second inflation cavity 10 is inflated, the clutch mechanism push rod 8 pushes the clutch shift fork 5 to move in a translational mode, the clutch shift fork 5 overcomes the locking force of the locking ball 6, a spring below the locking ball 6 is compressed, the locking ball 6 is sunk into a groove, the clutch shift fork 5 pushes the clutch mechanism meshing sleeve 12 to be separated from the rear side gear 9, and simultaneously, when the push rod shaft 2 moves in the rear side, the inter-axle differential lock shift fork 3 synchronously pushes the combination teeth on the end face of the inter-axle differential meshing sleeve 4 to be meshed with the combination teeth on the end face of the front side gear 13, namely, the inter-axle differential lock and the rear axle separation mechanism synchronously move, so that the inter-axle differential lock and the rear axle separation mechanism are linked, and idle running of a power chain caused by unlocking of the inter-axle differential lock is avoided when the vehicle is switched to the single-axle mode.
Embodiment III: the multi-drive inter-axle clutch device linked with the differential lock comprises a shell 1, a push rod shaft 2, an inter-axle differential lock shifting fork 3, an inter-axle differential meshing sleeve 4 and a clutch shifting fork 5, wherein the push rod shaft 2 is arranged in the shell 1, a first air inflation cavity 11 is arranged between the front end part and the shell, and the first air inflation cavity 11 is inflated to drive the push rod shaft 2 to move towards the rear side; the inter-axle differential lock shifting fork 3 and the clutch shifting fork 5 are both arranged on the push rod shaft 2, and the inter-axle differential lock shifting fork 3 is axially limited at two sides on the push rod shaft 2 and moves in a translational manner synchronously with the push rod shaft 2; the clutch shifting fork 5 is in clearance fit with the push rod shaft 2, one side is axially limited, and when the push rod shaft 2 moves to the rear side, the clutch shifting fork 5 is kept stationary; the inter-axle differential lock shifting fork 3 is connected with the inter-axle differential meshing sleeve 4, the inter-axle differential meshing sleeve 4 is coaxially arranged with the rear side gear 9 and the front side gear 13, and the inter-axle differential meshing sleeve 4 and the front side gear 13 can be meshed for transmission; a second air inflation cavity and a clutch mechanism push rod 8 are arranged between the clutch shifting fork 5 and the shell, the second air inflation cavity is inflated, and the clutch shifting fork 5 is driven to move to the rear side by the clutch mechanism push rod 8; the clutch shifting fork 5 is connected with a clutch mechanism meshing sleeve 12, and the clutch mechanism meshing sleeve 12 is arranged in a key slot formed by combining the rear side gear 9 and the through shaft 15; a locking ball 6 is arranged between the clutch shifting fork 5 and the shell.
When the vehicle is driven by a plurality of drive axles and the inter-axle differential lock needs to be started, the first inflation cavity 11 is inflated, and the air pressure pushes the push rod shaft 2 to axially translate; the clutch shifting fork 5 is in clearance fit with the push rod shaft 2, the clutch shifting fork 5 is kept still under the action of the locking ball 6, the clutch engagement sleeve 12, the rear side gear 9 and the through shaft 15 are connected through key engagement, power can still be transmitted to the through shaft 15, namely, the power is transmitted to the rear axle, and the inter-axle differential lock works.
When the vehicle is in idle load or low load, the vehicle is switched to a single-axle driving mode, namely, the power of a through shaft 15, namely, a rear axle is interrupted, the second inflation cavity 10 is inflated, the clutch mechanism push rod 8 pushes the clutch shift fork 5 to move in a translational mode, the clutch shift fork 5 overcomes the locking force of the locking ball 6, a spring below the locking ball 6 is compressed, the locking ball 6 is sunk into a groove, the clutch shift fork 5 pushes the clutch mechanism meshing sleeve 12 to be separated from the rear side gear 9, and simultaneously, when the push rod shaft 2 moves in the rear side, the inter-axle differential lock shift fork 3 synchronously pushes the combination teeth on the end face of the inter-axle differential meshing sleeve 4 to be meshed with the combination teeth on the end face of the front side gear 13, namely, the inter-axle differential lock and the rear axle separation mechanism synchronously move, so that the inter-axle differential lock and the rear axle separation mechanism are linked, and idle running of a power chain caused by unlocking of the inter-axle differential lock is avoided when the vehicle is switched to the single-axle mode.
In the present embodiment, the inflation and deflation of the first inflation chamber 11 and the second inflation chamber 10 are controlled by an inter-shaft speed lock control mechanism.
Embodiment four: the multi-drive inter-axle clutch device linked with the differential lock comprises a shell 1, a push rod shaft 2, an inter-axle differential lock shifting fork 3, an inter-axle differential meshing sleeve 4 and a clutch shifting fork 5, wherein the push rod shaft 2 is arranged in the shell 1, a first air inflation cavity 11 is arranged between the front end part and the shell, and the first air inflation cavity 11 is inflated to drive the push rod shaft 2 to move towards the rear side; the inter-axle differential lock shifting fork 3 and the clutch shifting fork 5 are both arranged on the push rod shaft 2, and the inter-axle differential lock shifting fork 3 is axially limited at two sides on the push rod shaft 2 and moves in a translational manner synchronously with the push rod shaft 2; the clutch shifting fork 5 is in clearance fit with the push rod shaft 2, one side is axially limited, and when the push rod shaft 2 moves to the rear side, the clutch shifting fork 5 is kept stationary; the inter-axle differential lock shifting fork 3 is connected with the inter-axle differential meshing sleeve 4, the inter-axle differential meshing sleeve 4 is coaxially arranged with the rear side gear 9 and the front side gear 13, and the inter-axle differential meshing sleeve 4 and the front side gear 13 can be meshed for transmission; a second air inflation cavity and a clutch mechanism push rod 8 are arranged between the clutch shifting fork 5 and the shell, the second air inflation cavity is inflated, and the clutch shifting fork 5 is driven to move to the rear side by the clutch mechanism push rod 8; the clutch shifting fork 5 is connected with a clutch mechanism meshing sleeve 12, and the clutch mechanism meshing sleeve 12 is arranged in a key slot formed by combining the rear side gear 9 and the through shaft 15; a locking ball 6 is arranged between the clutch shifting fork 5 and the shell.
When the vehicle is driven by a plurality of drive axles and the inter-axle differential lock needs to be started, the first inflation cavity 11 is inflated, and the air pressure pushes the push rod shaft 2 to axially translate; the clutch shifting fork 5 is in clearance fit with the push rod shaft 2, the clutch shifting fork 5 is kept still under the action of the locking ball 6, the clutch engagement sleeve 12, the rear side gear 9 and the through shaft 15 are connected through key engagement, power can still be transmitted to the through shaft 15, namely, the power is transmitted to the rear axle, and the inter-axle differential lock works.
When the vehicle is in idle load or low load, the vehicle is switched to a single-axle driving mode, namely, the power of a through shaft 15, namely, a rear axle is interrupted, the second inflation cavity 10 is inflated, the clutch mechanism push rod 8 pushes the clutch shift fork 5 to move in a translational mode, the clutch shift fork 5 overcomes the locking force of the locking ball 6, a spring below the locking ball 6 is compressed, the locking ball 6 is sunk into a groove, the clutch shift fork 5 pushes the clutch mechanism meshing sleeve 12 to be separated from the rear side gear 9, and simultaneously, when the push rod shaft 2 moves in the rear side, the inter-axle differential lock shift fork 3 synchronously pushes the combination teeth on the end face of the inter-axle differential meshing sleeve 4 to be meshed with the combination teeth on the end face of the front side gear 13, namely, the inter-axle differential lock and the rear axle separation mechanism synchronously move, so that the inter-axle differential lock and the rear axle separation mechanism are linked, and idle running of a power chain caused by unlocking of the inter-axle differential lock is avoided when the vehicle is switched to the single-axle mode.
In this embodiment, the inflation and deflation of the first inflation chamber 11 and the second inflation chamber 10 are controlled by an inter-axle speed lock control mechanism, the inter-axle speed lock control mechanism includes a three-gear rocker switch 14 and a sensor 16, when the switch is pressed to the I gear, a differential lock locking function is started, and a feedback signal of the sensor 16 displays that the inter-axle differential lock is locked on a cab instrument; when the switch is pressed to II gear, the functions of rear axle separation and inter-axle differential locking are started and the rear axle is lifted, and a feedback signal of the sensor 16 displays 'the rear axle is separated and lifted and the inter-axle differential locking is locked' on a cab instrument; when the switch is pressed to the O gear, the rear axle separation and inter-axle differential locking functions are closed, the rear axle is put down, and the state of the multi-drive axle is restored.
The sensor 16 is arranged at the front end of the push rod shaft 2, as shown in fig. 2, the first air charging cavity 11 is connected with the air storage cylinder 17 through the first relay 18, the second air charging cavity 10 is connected with the air storage cylinder 17 through the second relay 19, and the inter-shaft speed lock control mechanism controls the disconnection or the suction of the first relay 18 and the second relay 9.
In this embodiment, the multi-drive inter-axle clutch device linked with the differential lock is located above the main reducer. A return spring is arranged between the rear end of the push rod shaft 2 and the shell 1. The clutch mechanism meshing sleeve 12 is in spline fit with the rear side gear 9 and the through shaft 15.
The foregoing has shown and described the basic principles and main structural features of the present invention. The present invention is not limited to the above examples, and various changes and modifications may be made therein without departing from the spirit and scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Here, it should be noted that the description of the above technical solution is exemplary, and the present specification may be embodied in different forms and should not be construed as being limited to the technical solution set forth herein. Rather, these descriptions will be provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Furthermore, the technical solution of the invention is limited only by the scope of the claims.
The shapes, dimensions, ratios, angles, and numbers disclosed for describing aspects of the present specification and claims are merely examples, and thus, the present specification and claims are not limited to the details shown. In the following description, a detailed description of related known functions or configurations will be omitted when it may be determined that the emphasis of the present specification and claims is unnecessarily obscured.
Where the terms "comprising," "having," and "including" are used in this specification, there may be additional or alternative parts unless the use is made, the terms used may generally be in the singular but may also mean the plural.
It should be noted that although the terms "first," "second," "top," "bottom," "one side," "another side," "one end," "the other end," etc. may be used and used in this specification to describe various components, these components and portions should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, with top and bottom elements, under certain circumstances, also being interchangeable or convertible with one another; the components at one end and the other end may be the same or different in performance from each other.
In describing positional relationships, for example, when positional sequences are described as "on," "above," "below," and "next," unless words or terms such as "just" or "directly" are used, it is also possible to include cases where there is no contact or contact between them. If a first element is referred to as being "on" a second element, it does not mean that the first element must be located above the second element in the figures. The upper and lower portions of the component will change in response to changes in the angle and orientation of the view. Thus, in the drawings or in actual construction, if it is referred to that a first element is "on" a second element, it can comprise the case that the first element is "under" the second element and the case that the first element is "over" the second element. In describing the time relationship, unless "just" or "direct" is used, a case where there is no discontinuity between steps may be included in describing "after", "subsequent" and "preceding". The features of the various embodiments of the invention may be combined or spliced with one another, either in part or in whole, and may be implemented in a variety of different configurations as will be well understood by those skilled in the art. Embodiments of the present invention may be performed independently of each other or may be performed together in an interdependent relationship.
Finally, it should be noted that the above embodiments are merely representative examples of the present invention. Obviously, the invention is not limited to the above-described embodiments, but many variations are possible. Any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention should be considered to be within the scope of the present invention.
Claims (10)
1. A clutch device between multiple drive axles linked with differential lock is characterized in that: the device comprises a shell, a push rod shaft, an inter-shaft differential lock shifting fork, an inter-shaft differential meshing sleeve and a clutch shifting fork, wherein the push rod shaft is arranged in the shell, a first air inflation cavity is arranged between the front end part of the push rod shaft and the shell, and the first air inflation cavity is inflated to drive the push rod shaft to move towards the rear side; the inter-axle differential lock shifting fork and the clutch shifting fork are both arranged on the push rod shaft, and the inter-axle differential lock shifting fork is axially limited at two sides on the push rod shaft and moves in a translational manner synchronously with the push rod shaft; the clutch shifting fork is in clearance fit with the push rod shaft, one side is axially limited, and the clutch shifting fork is kept static when the push rod moves axially at the rear side;
the inter-axle differential lock shifting fork is connected with an inter-axle differential meshing sleeve, the inter-axle differential meshing sleeve is coaxially arranged with the rear side gear and the front side gear, and the inter-axle differential meshing sleeve and the front side gear can be meshed for transmission;
A second air inflation cavity and a clutch mechanism push rod are arranged between the clutch shifting fork and the shell, the second air inflation cavity is inflated, and the clutch shifting fork is driven to move to the rear side by the clutch mechanism push rod; the clutch shifting fork is connected with the clutch mechanism meshing sleeve, and the clutch mechanism meshing sleeve is arranged in a key slot formed by combining the rear side gear and the through shaft; a locking ball is arranged between the clutch shifting fork and the shell.
2. The multi-drive inter-axle clutch device coupled with a differential lock as claimed in claim 1, wherein: when the vehicle is driven by a plurality of drive axles and the inter-axle differential lock needs to be started, the first inflation cavity is inflated, and the air pressure pushes the push rod shaft to axially translate; the clutch shifting fork is in clearance fit with the push rod shaft and is kept motionless under the action of the locking balls, the clutch mechanism meshing sleeve, the rear side gear and the through shaft are connected through key meshing, power can still be transmitted to the through shaft, namely, the power is transmitted to the rear axle, and the interaxle differential lock works.
3. The multi-drive inter-axle clutch device coupled with a differential lock as claimed in claim 2, wherein: when the vehicle is in idle load or low load, the vehicle is switched to a single-axle driving mode, namely, the through axle is interrupted, namely, when the power of the rear axle is supplied, the second inflation cavity is inflated, the clutch mechanism push rod pushes the clutch shift fork to move in a translational mode, the clutch shift fork overcomes the locking force of the locking ball, the spring below the locking ball is compressed, the locking ball is sunk into the groove, the clutch shift fork pushes the clutch mechanism meshing sleeve to be separated from the rear side gear, and simultaneously, when the push rod moves in a rearward direction, the inter-axle differential lock shift fork synchronously pushes the combining teeth on the end face of the inter-axle differential meshing sleeve to be meshed with the combining teeth on the end face of the front side gear, namely, the inter-axle differential lock and the rear axle separating mechanism synchronously move, so that the linkage of the inter-axle differential lock and the rear axle separating mechanism is realized, and the idle running of a power chain caused by unlocking of the inter-axle differential lock is avoided when the vehicle is switched to the single-axle mode.
4. A multiple transaxle clutch apparatus in conjunction with a differential lock as defined in claim 3 wherein: the inflation and deflation of the first inflation cavity and the second inflation cavity are controlled by an inter-shaft speed lock control mechanism.
5. The multi-drive inter-axle clutch associated with a differential lock as defined in claim 4, wherein: the inter-axle speed lock control mechanism comprises a three-gear rocker switch and a sensor, when the switch is pressed to an I gear, a differential lock locking function is started, and a sensor feedback signal displays that an inter-axle differential lock is locked on a cab instrument; when the switch is pressed to II gear, the functions of rear axle separation and inter-axle differential locking are started and the rear axle is lifted, and a sensor feedback signal displays 'the rear axle is separated and lifted and the inter-axle differential locking is locked' on a cab instrument; when the switch is pressed to the O gear, the rear axle separation and inter-axle differential locking functions are closed, the rear axle is put down, and the state of the multi-drive axle is restored.
6. The multi-drive inter-axle clutch associated with a differential lock as defined in claim 5, wherein: the sensor is arranged at the front end of the push rod shaft.
7. The multi-drive inter-axle clutch associated with a differential lock as defined in claim 4, wherein: the first inflation cavity is connected with the air cylinder through the first relay, the second inflation cavity is connected with the air cylinder through the second relay, and the inter-shaft speed lock control mechanism controls the disconnection or the suction of the first relay and the second relay.
8. The multi-drive inter-axle clutch device coupled with a differential lock as claimed in claim 1, wherein: above the final drive.
9. The multi-drive inter-axle clutch device coupled with a differential lock as claimed in claim 1, wherein: a return spring is arranged between the rear end of the push rod shaft and the shell.
10. The multi-drive inter-axle clutch device coupled with a differential lock as claimed in claim 1, wherein: the clutch mechanism meshing sleeve is in spline fit with the rear side gear and the through shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210761696.4A CN115163780B (en) | 2022-06-29 | 2022-06-29 | Multi-drive inter-axle clutch device linked with differential lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210761696.4A CN115163780B (en) | 2022-06-29 | 2022-06-29 | Multi-drive inter-axle clutch device linked with differential lock |
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| Publication Number | Publication Date |
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| CN115163780A CN115163780A (en) | 2022-10-11 |
| CN115163780B true CN115163780B (en) | 2024-08-16 |
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| CN202210761696.4A Active CN115163780B (en) | 2022-06-29 | 2022-06-29 | Multi-drive inter-axle clutch device linked with differential lock |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757884A (en) * | 2018-07-04 | 2018-11-06 | 汽解放汽车有限公司 | A kind of lightweight commercial car main reducer of middle axle assembly |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2287585Y (en) * | 1997-01-31 | 1998-08-12 | 王文生 | Clutch differential mechanism |
| JP2010121641A (en) * | 2008-11-17 | 2010-06-03 | Ud Trucks Corp | Differential lock device of vehicle |
| EP3156695B1 (en) * | 2015-10-16 | 2020-09-16 | Meritor Heavy Vehicle Systems Cameri SpA | Differential lock actuator |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757884A (en) * | 2018-07-04 | 2018-11-06 | 汽解放汽车有限公司 | A kind of lightweight commercial car main reducer of middle axle assembly |
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