CN113027948A - Wet-type half shaft brake with self-cooling function - Google Patents

Wet-type half shaft brake with self-cooling function Download PDF

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Publication number
CN113027948A
CN113027948A CN202110234834.9A CN202110234834A CN113027948A CN 113027948 A CN113027948 A CN 113027948A CN 202110234834 A CN202110234834 A CN 202110234834A CN 113027948 A CN113027948 A CN 113027948A
Authority
CN
China
Prior art keywords
oil
brake
self
wet
cooling function
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.)
Withdrawn
Application number
CN202110234834.9A
Other languages
Chinese (zh)
Inventor
吴仲辉
付会鹏
陈祥军
金军
江俊峰
李春生
吴建成
陈吉敏
胡仁俊
尹力
朱桂雷
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.)
Hangzhou Hangcha Bridge Box Co ltd
Hangcha Group Co Ltd
Original Assignee
Hangzhou Hangcha Bridge Box Co ltd
Hangcha Group 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 Hangzhou Hangcha Bridge Box Co ltd, Hangcha Group Co Ltd filed Critical Hangzhou Hangcha Bridge Box Co ltd
Priority to CN202110234834.9A priority Critical patent/CN113027948A/en
Publication of CN113027948A publication Critical patent/CN113027948A/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/24—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member
    • F16D55/26—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with a plurality of axially-movable discs, lamellae, or pads, pressed from one side towards an axially-located member without self-tightening action
    • F16D55/36—Brakes with a plurality of rotating discs all lying side by side
    • F16D55/40—Brakes with a plurality of rotating discs all lying side by side actuated by a fluid-pressure device arranged in or one the brake
    • 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
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/16—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake
    • F16D65/18—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged in or on the brake adapted for drawing members together, e.g. for disc 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/78—Features relating to cooling
    • F16D65/84—Features relating to cooling for disc brakes
    • F16D65/853—Features relating to cooling for disc brakes with closed cooling system
    • 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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • 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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0413—Controlled cooling or heating of lubricant; Temperature control therefor
    • 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
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0482—Gearings with gears having orbital motion
    • 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
    • F16D2121/00—Type of actuator operation force
    • F16D2121/02—Fluid pressure
    • F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
    • 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
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F16H2001/327—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear with orbital gear sets comprising an internally toothed ring gear

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention discloses a wet half shaft brake with a self-cooling function, which comprises a supporting shaft sleeve and a half shaft capable of rotating in the supporting shaft sleeve, wherein a gear ring is fixedly installed at the tail end of the supporting shaft sleeve, a plurality of dual plates are sequentially arranged on the inner wall of the gear ring along the axial direction, a plurality of friction plates are sequentially arranged on the outer periphery of the part, extending out of the supporting shaft sleeve, of the half shaft along the axial direction, the dual plates and the friction plates are arranged in a staggered and penetrating manner, and a brake oil duct is arranged on the supporting shaft sleeve and used for allowing hydraulic oil. The diameter of the friction plate on the braking half shaft of the wet half shaft brake is obviously smaller than that of the friction plate in the traditional wet brake, so that the wet half shaft brake effectively reduces the braking torque and reduces the heat productivity. Meanwhile, oil inside the system can flow circularly, so that the effect of natural cooling is achieved, the heat dissipation effect is effectively improved, the system does not need to be provided with an external forced cooler, the system structure is effectively simplified, and the use cost of the system is reduced.

Description

Wet-type half shaft brake with self-cooling function
Technical Field
The invention relates to the field of forklift equipment, in particular to a wet half-axle brake with a self-cooling function.
Background
The large-tonnage forklift is widely applied to various technical fields, a wet braking drive axle is required to be arranged for ensuring the normal operation of the large-tonnage forklift, the friction plate and the dual plate are pushed to be tightly attached to each other through hydraulic pressure, braking torque is generated until the driving wheel is locked, and then the service braking is realized.
The existing wet brake drive axle of a large-tonnage forklift generally adopts hub braking, and a dual piece is arranged on the inner side of a hub and has larger radial size with a rotating shaft. Therefore, a large braking torque is required to complete the braking, and the amount of heat generated is large. Meanwhile, the existing large-tonnage forklift can adopt external cooling, and lubricating oil for cooling is input into the system from an external oil pump, so that the use and maintenance cost is high.
Therefore, how to provide a wet half-axle brake with low braking torque and small heat generation amount and self-cooling function is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a wet half-shaft brake with a self-cooling function, which reduces braking torque and heat productivity by arranging a friction plate on a half shaft, thereby reducing use and maintenance cost. Meanwhile, through the innovative design, oil in the brake system can flow circularly when the half shaft rotates, the brake heat of the brake system is taken away, the natural cooling effect is achieved, the heat dissipation effect is effectively improved, the system does not need to be provided with an external forced cooler, the system structure is effectively simplified, and the use cost of the system is reduced.
In order to solve the technical problem, the invention provides a wet half-shaft brake with a self-cooling function, which comprises a supporting shaft sleeve and a half shaft capable of rotating in the supporting shaft sleeve, wherein a gear ring is fixedly installed at the tail end of the supporting shaft sleeve, a plurality of dual plates are sequentially arranged on the inner wall of the gear ring along the axial direction, a plurality of friction plates are sequentially arranged on the outer periphery of the part, extending out of the supporting shaft sleeve, of the half shaft along the axial direction, the dual plates and the friction plates are alternately arranged in a staggered mode, a braking oil channel is arranged on the supporting shaft sleeve and used for allowing hydraulic oil to enter to push a piston to press the dual plates and the friction plates, and lubricating oil circularly flows in.
Preferably, a wheel hub is installed in the periphery of the supporting shaft sleeve through a bearing, the tail end of the half shaft is connected with a sealing shell through a transmission mechanism, the friction plate is located between the supporting shaft sleeve and the transmission mechanism and has an interval, and the sealing shell is fixedly connected with the wheel hub to drive the wheel hub to rotate around the supporting shaft sleeve.
Preferably, the ring gear is both ends open-ended cylinder sleeve structure, the head end opening diameter of ring gear is less than end opening diameter, the head end opening fixed mounting of ring gear in the terminal periphery of support shaft sleeve, the end opening of ring gear with drive mechanism cooperates, the duality piece set up in the middle section of ring gear inner wall.
Preferably, the half shaft is provided with a spline housing, and the friction plate is arranged on the spline housing.
Preferably, a plurality of first oil holes which axially penetrate are formed in the head end surface of the gear ring, and a plurality of second oil holes which axially penetrate are formed in the spline sleeve, so that lubricating oil circularly flows in the inner cavity of the hub and the inner cavity of the gear ring.
Preferably, a plurality of oil throwing grooves with openings facing the tail end are formed in the tail end face of the hub, a plurality of oil receiving grooves with openings facing the head end are formed in the head end face of the gear ring, and each oil receiving groove is provided with the first oil hole in the bottom face.
Preferably, the bottom surface of the oil slinger extends from inside to outside along the radial direction and inclines towards the head end, the bottom surface of the oil receiving groove extends from inside to outside along the radial direction and inclines towards the tail end, and the first oil hole is formed in the inner side of the bottom surface of the oil receiving groove.
Preferably, the inner wall of the gear ring is provided with a locking nut used for limiting the dual sheet, the locking nut and the piston are positioned on two sides of the dual sheet, the locking sheet is arranged on the outer side of the locking nut, and the locking sheet is fixed on the locking nut through a fixing bolt.
Preferably, the transmission mechanism comprises a sun gear, a planet gear and a planet carrier, the sun gear is mounted at the tail end of the half shaft, the sun gear is externally meshed with the planet gear and drives the planet carrier to rotate, and the planet carrier is fixedly connected with the sealing shell.
Preferably, the head end of the sealing shell is provided with a first connecting flange, the periphery of the wheel hub is provided with a second connecting flange, the head end of the sealing shell is sleeved at the outer end of the wheel hub, the first connecting flange and the second connecting flange are abutted and connected through bolts, and the tail end of the sealing shell is provided with an end cover.
The invention provides a wet half shaft brake with a self-cooling function, which comprises a supporting shaft sleeve and a half shaft capable of rotating in the supporting shaft sleeve, wherein a gear ring is fixedly installed at the tail end of the supporting shaft sleeve, a plurality of dual plates are sequentially arranged on the inner wall of the gear ring along the axial direction, a plurality of friction plates are sequentially arranged on the outer periphery of the part, extending out of the supporting shaft sleeve, of the half shaft along the axial direction, the dual plates and the friction plates are arranged in a staggered and penetrating manner, a brake oil passage is arranged on the supporting shaft sleeve and used for allowing hydraulic oil to enter to push a piston to press the dual plates and the.
In the normal driving process, power is transmitted to the half shaft, the half shaft and the friction plate rotate synchronously, the relative positions of the supporting shaft sleeve and the gear ring are fixed, the friction plate and the dual plate rotate relatively, hydraulic oil pushes the piston to press the dual plate and the friction plate tightly when braking is needed, braking torque is generated until the driving wheel is locked, driving braking is finally achieved, after the pressure of the hydraulic oil is relieved, the dual plate and the friction plate reset, the braking torque between the dual plate and the friction plate disappears, and braking is relieved. Because the friction plate of the invention is arranged on the half shaft, and the friction plate of the traditional brake is arranged on the wheel hub rotating around the rotating shaft, the radial size of the friction plate and the rotating axis on the half shaft in the brake is obviously smaller than that of the friction plate and the rotating axis in the traditional wet brake, therefore, the invention effectively reduces the braking torque, reduces the heat productivity and further reduces the use and maintenance cost. Meanwhile, oil in the system can flow circularly to take away the braking heat of the braking system, so that the effect of natural cooling is achieved, the heat dissipation effect is effectively improved, the system does not need to be provided with an external forced cooler, the system structure is effectively simplified, and the use cost of the system is reduced.
Drawings
FIG. 1 is a cross-sectional view of an embodiment of a wet half-axle brake with a self-cooling function provided in accordance with the present invention;
FIG. 2 is a cross-sectional view of another alternate perspective configuration of an embodiment of the wet half-axle brake with self-cooling provided by the present invention;
FIG. 3 is an exploded view of one embodiment of a wet half-axle brake with self-cooling provided by the present invention;
FIG. 4 is a schematic structural diagram of a ring gear in one embodiment of the wet half-axle brake with a self-cooling function provided by the present invention;
FIG. 5 is a schematic structural diagram of a wheel hub in an embodiment of the wet half-axle brake with a self-cooling function provided by the invention.
The novel hydraulic brake comprises a support shaft sleeve 1, a support shaft sleeve 2, a half shaft 3, a gear ring 4, a dual plate 5, a friction plate 6, a brake oil duct 7, a piston 8, a hub 9, a seal shell 10, a spline sleeve 11, a first oil hole 12, a second oil hole 13, an oil throwing groove 14, an oil receiving groove 15, a locking nut 16, a locking plate 17, a sun gear 18, a planet gear 19, a planet carrier 20, a first connecting flange 21, a second connecting flange 22, an end cover 23, a half shaft locking nut 24, a fixing bolt 25, a piston sealing ring 26, a gear ring sealing ring 27, a hub sealing ring 28 and an oil seal.
Detailed Description
The core of the invention is to provide a wet half-shaft brake with a self-cooling function, which reduces the braking torque and the heat productivity by arranging a friction plate on a half shaft, thereby reducing the use and maintenance cost. In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 5, fig. 1 is a sectional view illustrating a wet half-axle brake with a self-cooling function according to an embodiment of the present invention; FIG. 2 is a cross-sectional view of another alternate perspective configuration of an embodiment of the wet half-axle brake with self-cooling provided by the present invention; FIG. 3 is an exploded view of one embodiment of a wet half-axle brake with self-cooling provided by the present invention; FIG. 4 is a schematic structural diagram of a ring gear in one embodiment of the wet half-axle brake with a self-cooling function provided by the present invention; FIG. 5 is a schematic structural diagram of a wheel hub in an embodiment of the wet half-axle brake with a self-cooling function provided by the invention.
The invention provides a wet half-axle brake with a self-cooling function, which is used for a large-tonnage forklift with the weight of more than 10t, the system comprises a supporting shaft sleeve 1 and a half axle 2, the head end of the half axle 2 is connected with a main reducer assembly, the power of the system is transmitted to the half axle 2, the half axle 2 rotates around the axis of the half axle 2, one end of each part, which is close to the main reducer assembly, is the head end, and the other end, which is far away from the main reducer assembly, is the tail end. The position of the supporting shaft sleeve 1 is fixed, the half shaft 2 penetrates through a through hole of the supporting shaft sleeve 1, and a gap is formed between the supporting shaft sleeve 1 and the half shaft 2, so that the half shaft 2 can rotate in the supporting shaft sleeve 1. The tail end of the supporting shaft sleeve 1 is fixedly provided with a gear ring 3 which can be fixed through a half-shaft locking nut 23, the tail end of the gear ring 3 continuously extends forwards, the tail end of the gear ring 3 still surrounds the part extending out of the half shaft 2, and the inner wall of the gear ring 3 is sequentially provided with a plurality of dual pieces 4 along the axial direction, so that the dual pieces 4 cannot move radially, but can move axially. The half shaft 2 extends out of the periphery of the supporting shaft sleeve 1 part and is sequentially provided with a plurality of friction plates 5 along the axial direction, so that the friction plates 5 cannot move in the radial direction, but can move along the axial direction, and the dual plates 4 and the friction plates 5 are arranged in a staggered and penetrating way. The supporting shaft sleeve 1 is provided with a brake oil duct 6, one end of the brake oil duct 6 is connected with a hydraulic system of equipment, and the other end of the brake oil duct 6 is connected with a piston 7 and used for allowing hydraulic oil to enter to push the piston 7 to press the dual plate 4 and the friction plate 5. Specifically, the brake oil duct 6 includes an axial oil duct and radial oil ducts provided at both ends of the axial oil duct, so that the radial oil duct located at the head end is communicated with the hydraulic system, and the radial oil duct located at the tail end is communicated with the cavity of the piston 7.
Further, in order to ensure the stable operation of the system, a sealing ring is installed at the position required by each component, a locking nut 15 used for limiting the dual sheet 4 is installed on the inner wall of the gear ring 3, the locking nut 15 and the piston 7 are located on two sides of the dual sheet 4, when the piston 7 pushes the dual sheet 4, the locking nut 15 on the other side can limit the dual sheet 4 to continue to move axially, and a locking sheet 16 is installed on the outer side of the locking nut 15 through a fixing bolt 24.
In the normal driving process, power is transmitted to the half shaft 2, the half shaft 2 and the friction plate 5 synchronously rotate, the relative position of the supporting shaft sleeve 1 and the gear ring 3 is fixed, the friction plate 5 and the dual plate 4 relatively rotate, hydraulic oil pushes the piston 7 when braking is needed, the dual plate 4 and the friction plate 5 are tightly pressed, braking torque is generated, the rotating speed of the half shaft 2 is reduced until a driving wheel is locked, the dual plate 4 and the friction plate 5 are static, driving braking is finally achieved, after the pressure of the hydraulic oil is relieved, the dual plate 4 and the friction plate 5 reset, the braking torque between the dual plate 4 and the friction plate 5 disappears, and braking is relieved.
Because the friction plate 5 of the invention is arranged on the half shaft 2, and the friction plate 5 of the traditional brake is arranged on the hub 8 rotating around the rotating shaft, the radial dimension of the friction plate 5 and the rotating axis on the half shaft 2 in the brake is obviously smaller than that of the friction plate and the rotating axis in the traditional wet brake, therefore, the invention effectively reduces the braking torque, reduces the heat productivity and further reduces the use and maintenance cost. Meanwhile, oil in the system can flow circularly to take away the braking heat of the braking system, so that the effect of natural cooling is achieved, the heat dissipation effect is effectively improved, the system does not need to be provided with an external forced cooler, the system structure is effectively simplified, and the use cost of the system is reduced.
In addition, for the braking half shaft, the brake is arranged beside the wheel and behind the speed reducer, so that the braking force can be amplified, and the amplification effect is obtained by multiplying the braking force by the speed ratio of the wheel speed reducer.
Specifically, the tail end of the half shaft 2 is connected with the sealing shell 9 through the transmission mechanism, the transmission mechanism is located at the foremost end of the tail end of the half shaft 2, namely, the friction plate 5 is located between the supporting shaft sleeve 1 and the transmission mechanism, a gap is formed between the friction plate 5 and the supporting shaft sleeve 1, a gap is also formed between the friction plate 5 and the transmission mechanism, the sealed inner cavity of the gear ring 3 is formed under the sealing of the sealing shell 9, a bearing is arranged on the periphery of the supporting shaft sleeve 1, a hub 8 is installed through the bearing, an oil seal 28 surrounding the supporting shaft sleeve 1 is arranged at the head end of the hub 8, the tail end of the hub 8 is fixedly connected with the head end of. The rotation of the half shaft 2 is transmitted to the sealed housing 9 through a transmission mechanism, and the sealed housing 9 drives the hub 8 to rotate around the supporting shaft sleeve 1, wherein the rotation axes of the half shaft 2, the sealed housing 9 and the hub 8 are coaxially arranged.
In order to ensure the stable placement of the dual-piece 4, the gear ring 3 is a cylindrical sleeve structure with two open ends, the diameter of the head end opening of the gear ring 3 is smaller than that of the tail end opening, namely the tail end of the cylindrical sleeve is normally opened, the head end of the cylindrical sleeve is provided with a cylindrical structure with an internal spline, a small-diameter opening is formed, the head end opening of the gear ring 3 is fixedly installed on the periphery of the tail end of the supporting shaft sleeve 1, the two are connected through the spline, the half shaft locking nut 23 is used for fixing, and the half shaft locking nut 23 is an internal nut and an external nut which are matched. The tail end of the gear ring 3 continuously extends forwards, so that the tail end opening of the gear ring 3 is matched with the transmission mechanism, and the dual piece 4 is arranged in the middle section of the inner wall of the gear ring 3. In order to ensure the stable placement of the friction plate 5, the spline housing 10 is installed at the corresponding position on the half shaft 2, and the friction plate 5 is installed on the spline housing 10. The installation position and the connection mode of each component can be adjusted according to the situation and are all within the protection scope of the invention.
In the wet half-shaft brake with the self-cooling function provided by the specific embodiment of the invention, the head end surface of the gear ring 3 is provided with a plurality of first oil holes 11 which axially penetrate through the gear ring, the first oil holes are communicated with the inner cavity of the hub 8 and the inner cavity of the gear ring 3, the spline sleeve 10 is provided with a plurality of second oil holes 12 which axially penetrate through the spline sleeve, and the second oil holes are communicated with cavities at two ends of the spline sleeve 10 in the inner cavity of the gear ring 3, so that lubricating oil circularly flows in the inner cavity of the hub 8 and the. Through the repeated circulation flow of lubricating oil, realize the inside self-cooling effect of lubricating oil, need not set up external cooling, further reduce use cost and maintenance cost.
In order to improve the circulation effect, a plurality of oil throwing grooves 13 are arranged on the tail end face of the hub 8, the openings of the oil throwing grooves 13 face the tail end of the whole equipment, a plurality of oil receiving grooves 14 are arranged on the head end face of the gear ring 3, the openings of the oil receiving grooves 14 face the head end of the whole equipment, and the tail end face of the hub 8 is opposite to the head end face of the gear ring 3, so that in the rotating process of the hub 8, the openings of the oil throwing grooves 13 can be opposite to the openings of the oil receiving grooves 14, and each bottom face of the oil receiving grooves 14 is provided with one first oil hole 11.
Further, the bottom surface of the oil slinging groove 13 is an inclined surface, the bottom surface extends from inside to outside along the radial direction, one side close to the rotation axis is an inner side, one side far away from the rotation axis is an outer side, and the outer side of the bottom surface inclines towards the head end of the whole device, so that a groove body structure gradually deepens from inside to outside is formed. The bottom surface of the oil receiving groove 14 is an inclined surface, the bottom surface extends from inside to outside along the radial direction, one side close to the rotation axis is an inner side, one side far away from the rotation axis is an outer side, the outer side of the bottom surface inclines towards the tail end of the whole device to form a groove body structure which gradually deepens from inside to outside, and meanwhile, the first oil hole 11 is arranged on the inner side of the bottom surface of the oil receiving groove 14.
In the concrete working process, wheel hub 8 gets rid of the inside lubricating oil of wheel hub 8 inner chamber through getting rid of oil groove 13 when rotatory and connects oil groove 14, owing to get rid of oil groove 13 and the bottom surface structure who connects oil groove 14, lubricating oil increases gradually in the oil groove 14, finally get into ring gear 3 inner chamber through first oilhole 11, then flow to drive mechanism through second oilhole 12, drive mechanism gets rid of lubricating oil into other second oilhole 12 again at rotatory in-process, return to wheel hub 8 inner chamber through other first oilhole 11, realize the circulation of lubricating oil, through the direction of rotation who sets for wheel hub 8 and drive mechanism, make the flow of lubricating oil stable and the direction accurate. Further, it is within the scope of the present invention to evenly arrange the first oil holes 11 and the second oil holes 12, or to adjust the arrangement of each structure.
The drive mechanism can be various structures, if adopt planetary mechanism, including sun gear 17, planet wheel 18 and planet carrier 19, each part all soaks in lubricating oil, sun gear 17 is installed in semi-axis 2 end to with the outer gearing of planet wheel 18, the terminal inner wall of ring gear 3 sets up the internal tooth, with the inner gearing of planet wheel 18, planet carrier 19 fixed connection seal shell 9, semi-axis 2 drives sun gear 17 and rotates, sun gear 17 drives planet wheel 18 and rotates, planet wheel 18 drives planet carrier 19 and rotates, final drive seal shell 9 rotates.
On the basis of the wet half axle brake with the self-cooling function provided by each of the above embodiments, the first connecting flange 20 is disposed at the head end of the seal housing 9, the second connecting flange 21 is disposed at the periphery of the hub 8, the head end of the seal housing 9 is sleeved at the outer end of the hub 8, and the first connecting flange 20 and the second connecting flange 21 are abutted and connected through bolts, so as to realize the transmission of rotation. The end of the sealed shell 9 is provided with an inward step, the head end face of the step is fixedly connected with the planet carrier 19, the tail end face of the step is fixedly connected with the end cover 22, and accordingly, the piston sealing ring 25, the gear ring sealing ring 26 and the hub sealing ring 27 are arranged to guarantee the sealing effect.
The wet half axle brake with the self-cooling function provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (10)

1. The utility model provides a take wet-type half axle brake of self-cooling function, its characterized in that, including supporting shaft sleeve (1) and can supporting shaft sleeve (1) internal rotation semi-axis (2), supporting shaft sleeve (1) end fixed mounting has ring gear (3), ring gear (3) inner wall has set gradually a plurality of dual pieces (4) along the axial, semi-axis (2) stretch out in the periphery of supporting shaft sleeve (1) part has set gradually a plurality of friction discs (5) along the axial, dual piece (4) with friction disc (5) crisscross interlude is arranged, be provided with braking oil duct (6) on supporting shaft sleeve (1) for hydraulic oil gets into and compresses tightly in order to promote piston (7) dual piece (4) with friction disc (5), and lubricating oil passes through the rotation of semi-axis (2) is at the circulation flow in the system.
2. A wet half-axle brake with self-cooling function as defined in claim 1, wherein said supporting sleeve (1) is provided at its periphery with a hub (8) mounted by means of bearings, said half-axle (2) is connected at its end to a sealing housing (9) by means of a transmission mechanism, said friction plates (5) are located between said supporting sleeve (1) and said transmission mechanism with a space therebetween, and said sealing housing (9) is fixedly connected to said hub (8) for driving said hub (8) to rotate around said supporting sleeve (1).
3. The wet half-shaft brake with the self-cooling function as recited in claim 2, wherein the ring gear (3) is of a cylindrical sleeve structure with openings at both ends, the diameter of the head end opening of the ring gear (3) is smaller than that of the tail end opening, the head end opening of the ring gear (3) is fixedly mounted on the periphery of the tail end of the supporting shaft sleeve (1), the tail end opening of the ring gear (3) is matched with the transmission mechanism, and the duality plate (4) is arranged in the middle of the inner wall of the ring gear (3).
4. The wet half-shaft brake with the self-cooling function according to claim 3, characterized in that a spline housing (10) is mounted on the half shaft (2), and the friction plate (5) is mounted on the spline housing (10).
5. The wet half-shaft brake with the self-cooling function according to claim 4, wherein a plurality of first oil holes (11) axially penetrate are formed in the head end surface of the ring gear (3), and a plurality of second oil holes (12) axially penetrate are formed in the spline housing (10), so that lubricating oil can circularly flow in the inner cavity of the hub (8) and the inner cavity of the ring gear (3).
6. The wet half-shaft brake with the self-cooling function as recited in claim 5, wherein a plurality of oil slinger grooves (13) opening toward the tail end are provided on the tip end surface of the hub (8), a plurality of oil receiving grooves (14) opening toward the head end are provided on the head end surface of the ring gear (3), and the first oil hole (11) is provided on the bottom surface of each oil receiving groove (14).
7. The wet half-shaft brake with the self-cooling function as defined in claim 6, wherein the bottom surface of the oil slinger (13) extends radially from the inside to the outside and is inclined toward the head end, the bottom surface of the oil receiver (14) extends radially from the inside to the outside and is inclined toward the tail end, and the first oil hole (11) is provided inside the bottom surface of the oil receiver (14).
8. The wet half-shaft brake with the self-cooling function as recited in claim 2, wherein a lock nut (15) for limiting the coupling piece (4) is installed on the inner wall of the gear ring (3), the lock nut (15) and the piston (7) are located on two sides of the coupling piece (4), a locking piece (16) is installed on the outer side of the lock nut (15), and the locking piece (16) is fixed on the lock nut (15) through a fixing bolt (24).
9. The wet half-shaft brake with the self-cooling function as recited in claim 2, characterized in that the transmission mechanism comprises a sun gear (17), planet gears (18) and a planet carrier (19), the sun gear (17) is mounted at the end of the half shaft (2), the sun gear (17) is externally meshed with the planet gears (18) and drives the planet carrier (19) to rotate, and the planet carrier (19) is fixedly connected with the seal housing (9).
10. The wet half-axle brake with the self-cooling function according to any one of claims 2 to 9, wherein a first connecting flange (20) is arranged at the head end of the seal housing (9), a second connecting flange (21) is arranged on the periphery of the hub (8), the head end of the seal housing (9) is sleeved on the outer end of the hub (8), the first connecting flange (20) and the second connecting flange (21) are abutted and connected through bolts, and an end cover (22) is arranged at the tail end of the seal housing (9).
CN202110234834.9A 2021-03-03 2021-03-03 Wet-type half shaft brake with self-cooling function Withdrawn CN113027948A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110234834.9A CN113027948A (en) 2021-03-03 2021-03-03 Wet-type half shaft brake with self-cooling function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110234834.9A CN113027948A (en) 2021-03-03 2021-03-03 Wet-type half shaft brake with self-cooling function

Publications (1)

Publication Number Publication Date
CN113027948A true CN113027948A (en) 2021-06-25

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Family Applications (1)

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CN202110234834.9A Withdrawn CN113027948A (en) 2021-03-03 2021-03-03 Wet-type half shaft brake with self-cooling function

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Country Link
CN (1) CN113027948A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113958630A (en) * 2021-09-08 2022-01-21 中国北方车辆研究所 Mechanical hydraulic composite retarding brake device
CN114537044A (en) * 2022-03-21 2022-05-27 浙江中柴机器有限公司 Novel steering drive axle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113958630A (en) * 2021-09-08 2022-01-21 中国北方车辆研究所 Mechanical hydraulic composite retarding brake device
CN113958630B (en) * 2021-09-08 2024-03-08 中国北方车辆研究所 Mechanical hydraulic composite retarding braking device
CN114537044A (en) * 2022-03-21 2022-05-27 浙江中柴机器有限公司 Novel steering drive axle
CN114537044B (en) * 2022-03-21 2023-08-22 浙江中柴机器有限公司 Novel steering drive axle

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Application publication date: 20210625