WO2021047290A1 - 一种车轮驱动系统 - Google Patents
一种车轮驱动系统 Download PDFInfo
- Publication number
- WO2021047290A1 WO2021047290A1 PCT/CN2020/102789 CN2020102789W WO2021047290A1 WO 2021047290 A1 WO2021047290 A1 WO 2021047290A1 CN 2020102789 W CN2020102789 W CN 2020102789W WO 2021047290 A1 WO2021047290 A1 WO 2021047290A1
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- WO
- WIPO (PCT)
- Prior art keywords
- ring
- hub
- wedge
- wheel drive
- rim
- Prior art date
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- 238000007789 sealing Methods 0.000 claims abstract description 46
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B11/00—Units comprising multiple wheels arranged side by side; Wheels having more than one rim or capable of carrying more than one tyre
- B60B11/06—Wheels with more than one rim mounted on a single wheel body
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/02—Hubs adapted to be rotatably arranged on axle
- B60B27/04—Hubs adapted to be rotatably arranged on axle housing driving means, e.g. sprockets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B30/00—Means for holding wheels or parts thereof
- B60B30/06—Means for holding wheels or parts thereof engaging the wheel body, e.g. the rim
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K7/00—Disposition of motor in, or adjacent to, traction wheel
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
Definitions
- the invention relates to a wheel drive system, in particular to a wheel drive system for off-road dump trucks.
- the off-highway dump wheel drive system is installed inside and on the side of the vehicle tires to drive the vehicle forward by reducing the speed and increasing the torque.
- the usual typical route is the power of the engine to the generator, and then to the traction motor through frequency conversion control.
- the traction motor converts electrical energy into high-speed and small-torque mechanical energy, which is then converted into a gear transmission through the wheel gearbox. Low speed and high torque output.
- the wheel side reducer of the above-mentioned wheel drive system is filled with a certain amount of lubricating oil for lubricating internal gears and bearings and other components, it is necessary to isolate the static seal at the power input end and the dynamic sealing device at the power output end from the outside to achieve reliability. seal.
- the power output end is in direct contact with the atmosphere above the wheel surface, with more dust and water vapor, high linear velocity, high vibration, and uneven internal pressure.
- the sealing conditions are very bad, so sealing failures often occur. Once the seal fails, it is easy to cause damage to the wheel reducer, which forces the entire vehicle to be shut down and repaired, resulting in greater economic losses.
- the Chinese patent with application number 201210119760.5 discloses a sealing body for use with a torque tube.
- practice shows that the seal achieved by this technical solution is prone to oil leakage after long-term operation.
- the reason is: the sealing body
- the first and second parts of the gearbox are mainly used to prevent external contaminants from entering the gearbox.
- the sealing ring installed in the third part uses a contact seal lip seal to prevent the lubricating oil from leaking out of the gearbox.
- the gearbox is working When the internal bearings, gears and other parts rotate at a high speed, according to the Bernoulli effect of the fluid, it will inevitably lead to a relatively negative pressure in the area close to the rotating parts, making the internal pressure of the gearbox uneven and unstable.
- the lip sealing device in the contact seal realized by it is directly affected by the constantly changing differential pressure inside and outside the gearbox, which is not only prone to unreliable sealing due to morphological changes, but also prone to oil leakage due to repeated deformation and fatigue failure.
- the wheel drive device bears the weight load of the entire vehicle.
- the structure of the existing wheel drive device is shown in Figure 1.
- the inner end of the motor 2 is connected to the torque tube 6 supported on the frame 4 through the gear device 3, and the torque tube 6 is mounted on the motor through the inner and outer bearings 7, 10
- the inner end of the hub 9 outside the shell is connected, and the outer end of the motor 2 is connected with the outer end of the hub 9 through the brake device 1 to form an outer sealing structure; both ends of the outer circle of the hub 9 are respectively sleeved with the outer end of the inner rim 5 with a wedge-shaped closing
- the inner end of the outer rim 12 has a wedge-shaped stop that matches the wedge-shaped end of the outer end of the inner rim 5.
- the outer end of the hub 9 is equipped with a wedge-shaped pressure that matches the wedge-shaped end of the inner end of the outer rim 12 Ring 11, the outer end of the wedge-shaped pressing ring 11 is equipped with a spacer ring 8 that presses it on the end surface of the hub 9, and then uses the wedge structure between the outer circle ends of the hub 9 and the inner and outer rims, as well as the spacer ring 8 that clamps the inner and outer rims. , So that they are connected to each other.
- the mining dump wheel hubs currently on the market are mostly of the integral casting type, with various defects such as unstable quality, multiple processes, complicated casting influence factors, and easy to produce porosity and looseness.
- the wheel gearbox is usually a two-stage or three-stage transmission mechanism.
- the high-speed and small-torque load is input from the first stage and gradually becomes a low-speed and large-torque load.
- a certain amount of lubricating oil is put in the wheel gear box, and the gears, bearings, friction pairs and other parts are lubricated in a "splash" manner through the stirring of the rotating parts.
- the lubricating oil cannot lubricate them in a "splash” manner, which affects the life of the parts and further affects the reliability of the wheel gearbox.
- the main purpose of the present invention is to provide a wheel drive system to solve the problems in the prior art.
- a wheel drive system which includes a wheel-side reducer, the wheel-side reducer includes a frame and a torque tube connected to the wheel, and is arranged on the frame And the sealing structure between the torsion tube, the sealing structure includes a static ring fixed to the frame and a moving ring arranged opposite to the static ring and fixed to the torsion tube, characterized in that: the end surface of the static ring There are multiple rings from the outside to the inside in the radial direction.
- the inner circle of the innermost ring is tightly fitted with a throttle ring and a skeleton oil seal;
- the movable ring includes a lower edge inner ring, and the outer circle of the lower edge inner ring It is in contact with the skeleton oil seal to form a skeleton oil seal, and the position opposite to the throttle ring forms a throttle ring seal.
- the throttle ring has a set of axially spaced radially extending comb teeth.
- the thickness of the comb teeth is substantially the same as the gap width of the comb teeth, and the length of the comb teeth is 2-2.5 times the thickness of the comb teeth.
- one end of the throttle ring adjacent to the skeleton oil seal has a limiting boss.
- the end surface of the static ring has at least three rings from the outside to the inside in the radial direction, and the outer circle of the innermost ring has a groove for inserting the seal; the end surface of the moving ring is radially outside to inside.
- the static ring is fixedly connected to the frame of the wheel-side reducer through its buckle, and the inner stop of the buckle is in transitional fit with the outer stop on the frame.
- a wheel hub whose two ends are respectively sleeved and fixedly connected to the outer end of the inner rim and the inner end of the outer rim.
- the outer end of the inner rim has a wedge-shaped constriction
- the inner end of the hub has a wedge-shaped constriction that matches with the wedge-shaped constriction
- the wedge-shaped constriction is connected to a pressing ring or clamp that is pressed against the outer end surface of the inner rim.
- the ring forms a clamping and fastening structure for wedge-shaped closing through bolts that are worn.
- a perforated inner baffle wall extends near the outer end of the inner rim toward the axis of rotation, the inner end of the hub has a flange flange, and the outer end surface of the flange flange is connected to the inner baffle wall.
- the end faces are fitted together, and a fastening structure is formed by wearing fasteners.
- a perforated inner retaining ring or inner retaining ring that is attached to the outer end surface of the threaded hole of the hub, and the fastener passes through the inner retaining ring or the inner retaining ring.
- the threaded hole screwed into the hub forms a pressing and fastening structure.
- the inner end of the outer rim has a wedge-shaped constriction
- the outer end of the hub is equipped with a hypotenuse wedge ring
- the hypotenuse wedge ring has a wedge-shaped inclined surface that matches the wedge-shaped constriction of the inner end of the outer rim
- the hypotenuse The outer end of the wedge ring has a reduced diameter pressing the outer end of the hub, and the inner end of the hypotenuse extends a wedge plug inserted into the radial distance between the hub and the outer rim; the wedge-shaped inclined surface and the right clamping ring form a clamping tightness for the wedge-shaped narrowing ⁇ Solid structure.
- the outer end of the inner rim has a wedge-shaped constriction
- the inner end of the hub has a wedge-shaped notch that matches the wedge-shaped constriction formed on one side of the radially outer extension edge, and the wedge-shaped notch is pressed and held outside the inner rim.
- the left clamping ring on the end face forms a clamping and fastening structure for the wedge-shaped closing through the bolts worn; the through hole of the hypotenuse wedge ring is installed to pass through the right clamping ring and the left clamping ring and then screw into the radially extending edge
- the small diameter section and the large diameter section of the locking bolt have reverse threads for screwing the left nut and the right nut respectively, and the outer end is equipped with a lock nut; the left nut and the right nut
- the non-circular outer profile is matched with the counterbore at the corresponding positions of the left clamping ring and the right clamping ring to form a moving pair.
- the hub includes a body.
- the body includes an inner ring, a radially outer edge and a radially outer edge.
- the radially outer edge and the radially outer edge are respectively located in the axial direction of the inner ring. Both sides, and the radially outer edge and the radially outer edge protrude radially outward from the inner ring, which is characterized in that it further includes an outer ring, and the outer ring is located at a radially spaced distance from the inner ring.
- the radially outer side of the inner ring, and the outer ring is fixedly connected to the radially outer edge and the radially outer edge.
- the body is integrally formed, and the outer ring is connected to the body by a material connection.
- outer ring is fixedly connected to the radially outer edge and the radially outer edge by welding.
- the main body is an integral structure formed by integral forging.
- the outer ring includes a first outer ring portion and a second outer ring portion, and the first outer ring portion and the second outer ring portion are located at different positions in the circumferential direction of the hub.
- first outer ring portion and the second outer ring portion are columnar reinforcement structures, and the size of the first outer ring portion and the second outer ring portion in the axial direction of the hub is larger than that of the first outer ring portion And the size of the second outer ring portion in the radial and/or circumferential direction of the hub.
- first outer ring portion and the second outer ring portion have a curved plate shape.
- first outer ring portion and the second outer ring portion are connected to each other by welding.
- the outer ring only covers a part of the circumferential direction of the hub.
- the outer ring has a through hole.
- the hub also includes a hub.
- the two ends of the hub are respectively a radially outer edge and a radially outer edge.
- the end surface of the radially outer edge is evenly spaced with outer ring perforations and inner ring threaded holes;
- a circle of threaded holes is evenly distributed on the end surface of the rim at least at a peripheral interval.
- a gearbox lubrication device which includes a horizontal shaft sun gear whose two ends are axially limited and supported on the first and second axial thrust rings, and the first thrust ring is embedded in In the counterbore at the inner end of the box body end cover, the box body end cover cover is fixed on the planet carrier as the shell, the sun gear meshes with the planet gear outside, and the planet gear meshes with the fixed ring gear.
- the planetary gear is supported on the planetary pin shaft through a planetary gear bearing; it is characterized in that an oil collecting box located above the first thrust ring and communicating with the bottom oil outlet is fixed on the end cover of the box body, the oil collecting box There is an oil inlet adjacent to and facing the meshing position of the sun gear and the planetary gear; the outer circle of the first thrust ring has a circumferential oil passage corresponding to the oil outlet hole and a radially extending end surface oil groove, the circumferential direction The oil passage communicates with its inner hole at least through the radial oil hole, or communicates with the end surface oil groove through the axial oil passage.
- Another object of the present invention is to provide a wheel-side reducer combined sealing structure that can effectively avoid oil leakage and significantly improve the reliability of the sealing by improving the structure in view of the defects in the prior art.
- the basic technical solution is: including a static ring fixed to the frame and a relative fixed torsion force.
- the moving ring of the pipe, the end surface of the static ring has at least three rings from the outside to the inside in the radial direction;
- the outer circle of the innermost ring has a groove for inserting the packing root, and the inner circle is tightly fitted with a throttle ring And a skeleton oil seal,
- the throttle ring has a set of axially spaced radially extending comb teeth;
- the end surface of the movable ring radially outside to inside has a ring convex embedded between adjacent ring rings to form a radial labyrinth seal, and
- the convex inner peripheral surface opposite to the groove is in contact with the packing to form a packing seal;
- the outer circle of the inner ring of the lower edge is in contact with the frame oil seal to
- the above-mentioned four-layer seal structure not only performs its duties: the labyrinth seal mainly plays a role of dust prevention and can prevent most of the external particles from entering; the contact packing seal not only completely prevents the entry of particles, but also blocks external water vapor; the skeleton oil seal seal The main function is to tightly block the lubricating oil inside the wheel-side reducer; the throttle ring seal has a friction effect when the fluid passes through the zigzag throttling gap of the comb teeth, and reduces the pressure on the skeleton oil seal; moreover, the throttle ring comb A set of expansion cavities are formed between the teeth at the same time.
- a further improvement of the present invention is that: a wear-resistant belt is embedded in the inner ring of the lower edge of the movable ring corresponding to the skeleton oil seal.
- the oil seal lip and the wear band contact and rotate relative to each other in the circumferential direction, avoiding the abrasion of the high manufacturing cost of the moving ring. After a period of operation (20,000-25,000 hours), only the worn wear band needs to be replaced. , Which significantly saves operating costs.
- a further improvement of the present invention is that the static ring is fixedly connected to the frame of the wheel-side reducer through its buckle, and the inner stop of the buckle is in transitional fit with the outer stop on the frame. Coated with sealant. This is not only convenient for disassembly and assembly during maintenance, but also can give priority to avoiding the leakage of lubricating oil from the matching gap between the stationary ring and the frame.
- a further improvement of the present invention is that the thickness of the comb teeth is basically the same as the gap width of the comb teeth, and the length of the comb teeth is 2-2.5 times the thickness of the comb teeth.
- a further improvement of the present invention is that the end of the moving ring away from the static ring is provided with an inner peripheral moving ring mounting surface and a connecting plate mounting seat on the end surface, and the moving ring is defined by the radial transition of the moving ring mounting surface and the torque tube.
- the axial position of the moving ring is defined by the connecting plate installed in the corresponding slot of the torsion tube through the connecting plate mounting seat.
- a further improvement of the present invention is that the throttle ring has a limiting boss at one end adjacent to the frame oil seal, so that the frame oil seal can be reliably axially limited, which is more conducive to exerting its sealing effect.
- Another object of the present invention is to provide a wheel drive device that can effectively avoid slipping and has a simple structure in view of the defects in the prior art.
- the basic technical solution of the wheel drive device of the present invention includes a motor installed on the outside of the frame to determine the axis of rotation, and the inner output end of the motor is connected to the torque tube supported on the frame through a gear device;
- the torsion tube is fixedly connected to the inner end of the hub sleeved outside the motor, and the outer end of the motor is connected to the frame through a braking device, and is connected with the outer end of the hub to form an outer sealing device;
- the two ends are respectively fitted with the outer end of the fixed connection inner rim and the inner end of the outer rim.
- the outer end of the inner rim has a wedge-shaped constriction
- the inner end of the hub has a wedge-shaped stopper that matches the wedge-shaped constriction
- the wedge-shaped stopper and the pressure ring pressed on the outer end surface of the inner rim form a pair of bolts.
- a wedge-shaped closing clamping and fastening structure the inner end of the outer rim extends toward the axis of rotation, and a perforated inner baffle ring is attached to the outer end surface of the threaded hole of the hub, and the fastener is screwed in through the perforation of the inner baffle ring
- the threaded hole of the hub forms a pressing and fastening structure.
- the hub has an inner end radially extending edge with a wedge-shaped stop on one side, and the inner end radially extending edge and the opposite end surface of the pressing ring respectively have edge ring concave and convex rings that match each other.
- the inner baffle ring abuts against the outer end surface with the threaded hole on the radial outer edge of the outer end of the hub.
- the two ends of the hub barrel of the hub are respectively a radially outer edge and a radially outer edge; a side of the radially outer edge away from the wedge-shaped stop is axially extended with a connecting ring of reduced diameter; A connecting ring with a reduced diameter extends axially from the outer edge; the end surface of the radially outer edge is evenly spaced to form a perforation for the wedge-shaped narrowing clamping and fastening structure, and the end surface of the connecting ring is evenly spaced and torsionally spaced.
- a threaded hole for pipe fixing the end surface of the radial outer edge is evenly distributed with threaded holes for fixing the inner baffle ring at intervals, and the end surface of the connecting ring is evenly distributed with threaded holes for fixing the outer sealing device.
- the outer circumferential surface of the hub barrel is evenly spaced with reinforcing ribs connecting the radially outer edge and the radially outer edge.
- outer circumference of the outer circle of the hub tube is evenly spaced with reinforcing arcs connecting the radially outer edge and the radially outer edge.
- a perforated inner baffle wall extends near the outer end of the inner rim toward the axis of rotation, the inner end of the hub has a flange flange, and the outer end surface of the flange flange is attached to the inner end surface of the inner baffle wall ,
- the fastening structure is formed by the worn fasteners; the inner end of the outer rim extends toward the axis of rotation, and a perforated inner retaining ring is attached to the outer end surface of the threaded hole of the hub, and the fastener passes through the inner retaining ring
- the through hole is screwed into the threaded hole on the outer end surface of the hub to form a pressing and fastening structure.
- the two ends of the hub barrel of the hub are respectively a radially outer edge and a radially outer edge; the end surface of the radially outer edge has an outer circumferential interval uniformly distributed for forming by attaching a bolt to the inner baffle wall The perforation of the fixed connection structure, and the threaded holes for fixing the torsion tube with the inner circumferential interval evenly distributed; the outer end surface of the radial outer edge has the circumferential interval evenly distributed threads for fastening the inner retaining ring and the outer sealing device at the same time hole.
- the outer circumferential surface of the hub barrel is evenly spaced with reinforcing ribs connecting the radially outer edge and the radially outer edge.
- outer circumference of the outer circle of the hub tube is evenly spaced with reinforcing arcs connecting the radially outer edge and the radially outer edge.
- the outer end of the inner rim has a wedge-shaped constriction
- the inner end of the hub has a wedge-shaped constriction formed on one side of the radially outer extension edge to match the wedge-shaped constriction
- the inner end of the outer rim has a wedge-shaped constriction
- the hub The outer end is equipped with a hypotenuse wedge ring, the hypotenuse wedge ring has a wedge-shaped inclined surface that matches the wedge-shaped constriction of the inner end of the outer rim;
- the outer end of the hypotenuse wedge ring has a reduced diameter pressing the outer end of the hub, and the hypotenuse
- the inner end extends out of a wedge plug inserted into the radial distance between the hub and the outer rim; the wedge-shaped stop at the inner end of the hub and the wedge-shaped slope of the outer beveled wedge ring are respectively pressed against the left and right clamps on the outer end surface of the inner rim
- the ring forms a clamping and fastening structure for wedge-
- the through hole of the hypotenuse wedge ring is equipped with a stepped locking bolt that passes through the right clamp ring and the left clamp ring and then screwed into the radially outer edge.
- the small diameter section and the large diameter of the locking bolt The segment has reverse threads for screwing the left nut and the right nut, and its outer end is equipped with a lock nut; the non-circular outlines of the left nut and the right nut are respectively counterbored at the corresponding positions of the left and right clamp rings Matching constitutes a mobile pair.
- Another object of the present invention is to provide a wheel-side drive hub, the basic technical solution of which is to include a hub tube, the two ends of the hub tube are respectively a radially outer edge and a radially outer edge; the radially outer edge Outer ring perforations and inner ring threaded holes are evenly distributed on the end surface of the rim; at least a circle of threaded holes are evenly distributed on the end surface of the radial outer rim.
- the radially outer edge of the hub barrel can be fixedly connected to the inner stop structure of the inner rim by means of fasteners through the perforations of the outer ring, and fixedly connected to the torque tube by means of bolts through the threaded holes of the inner ring; on the other hand; ,
- the radial outer edge can form a tight connection with the outer rim and the brake device through the threaded hole by means of bolt fasteners.
- One side of the radially outer edge is formed with a wedge-shaped stop that matches the wedge-shaped neck of the inner rim, and the other side axially extends a connecting ring of reduced diameter; the end surface of the radially outer edge is evenly spaced for passing through
- the wearing bolt and the pressing ring form a perforation for the wedge-shaped closing clamping and fastening structure, and the end surface of the connecting ring is evenly spaced with threaded holes for fixed connection with the torsion tube.
- the radial outer edge axially extends a connecting ring of reduced diameter; the end surface of the radial outer edge is evenly spaced with threaded holes for fixing the inner retaining ring of the outer rim, and the end surface of the connecting ring Threaded holes fixedly connected with the outer sealing device are evenly distributed around the periphery.
- the end surface of the radially extending edge has perforations with uniformly distributed outer circumferential intervals for forming a fixed connection structure by fitting bolts with the inner retaining wall of the inner rim, and has threaded holes uniformly distributed on the inner circumferential interval to be fixedly connected to the torsion tube .
- the outer end surface of the radial outer edge has threaded holes with evenly spaced peripheral intervals for fastening the inner retaining ring of the outer rim and the outer sealing device at the same time.
- the outer circumferential surface of the hub tube is evenly spaced with reinforcing ribs connecting the radial outer edge and the radial outer edge, or the outer circumference of the hub tube
- the reinforcing arcs connecting the radially outer edge and the radially outer edge are evenly spaced apart.
- a wheel hub which includes a body, the body includes an inner ring, a radially outer edge and a radially outer edge, the radially outer edge and the radially outer edge are respectively located on the Both axial sides of the inner ring, and the radially outer edge and the radially outer edge protrude from the inner ring in the radial direction, and are characterized in that they further include an outer ring, the outer ring is radially The spaced manner is located on the radially outer side of the inner ring, and the outer ring is fixedly connected to the radially outer edge and the radially outer edge.
- the body is integrally formed, and the outer ring is connected to the body by a material connection.
- outer ring is fixedly connected to the radially outer edge and the radially outer edge by welding.
- the main body is an integral structure formed by integral forging.
- the outer ring includes a first outer ring portion and a second outer ring portion, and the first outer ring portion and the second outer ring portion are located at different positions in the circumferential direction of the hub.
- first outer ring portion and the second outer ring portion have a cylindrical structure, and the size of the first outer ring portion and the second outer ring portion along the axial direction of the hub is larger than that of the first outer ring portion and the The size of the second outer ring portion in the radial and/or circumferential direction of the hub.
- first outer ring portion and the second outer ring portion have a curved plate shape.
- first outer ring portion and the second outer ring portion are connected to each other by welding.
- the outer ring only covers a part of the circumferential direction of the hub.
- the outer ring has a through hole.
- the wheel hub structure is used in the 300-ton dump wheel rim reducer for mining.
- the defects of the parts are greatly reduced, and the mechanical performance is correspondingly improved. Specifically, the following beneficial effects have been achieved:
- the forging can eliminate the defects such as the as-cast looseness caused by the metal smelting process, and optimize the microstructure. Since the forging preserves the complete metal streamline, the mechanical properties of the forging are generally better than those of the same material.
- the castings are suitable for environments with more severe working conditions.
- Another object of the present invention is to provide a wheel gear box lubrication device that can properly solve the lubrication problem of parts that are difficult to splash in special positions in view of the problems in the prior art.
- the basic technical solution of the wheel side gearbox lubrication device of the present invention is: a horizontal shaft low-speed sun gear whose two ends are axially limited and supported on the first and second axial thrust rings respectively, the first The thrust ring is embedded in the counterbore at the inner end of the box end cover, the box end cover is fixed on the low-speed planet carrier as the shell, and the low-speed sun gear engages with the low-speed planetary gear.
- the low-speed planetary gear meshes with a fixed ring gear, the low-speed planetary gear is supported by the low-speed planetary pin shaft through the low-speed planetary gear bearing;
- the oil collecting box connected with the oil outlet hole at the bottom, the oil collecting box has an oil inlet adjacent to and facing the meshing position of the low-speed sun gear and the low-speed planetary gear;
- the outer circle of the first thrust ring has a position corresponding to the outlet
- the circumferential oil passage of the oil hole and the radially extending end surface oil groove, the circumferential oil passage communicates with the inner hole at least through the radial oil hole, or communicates with the end surface oil groove through the axial oil passage.
- a further improvement is that the oil collecting box has an arc shape and is located between the counterbore outer ring where the first thrust ring is embedded and the inner circle of the box end cover flange ring.
- a further improvement is that the oil collecting box is composed of a thin-walled metal plate welded to the end cover of the box body.
- a further improvement is that the end surface oil grooves are evenly distributed in the circumferential direction, extend radially, and have shallow outside and deep inside.
- a further improvement is that one end of the horizontal-axis low-speed sun gear is axially limited and supported by the first axial thrust ring through its central axis, and the other end is axially limited and supported by the second axial thrust ring through an end face counterbore.
- the second axial thrust ring is sleeved on the reduced-diameter shaft end of the front-stage sun gear.
- the oil extruded from the gap between the meshing teeth of the low-speed sun gear and the low-speed planetary gear will enter the oil collecting box from the oil inlet, and then leak from the oil outlet at the bottom to the circumferential oil passage of the first thrust ring. Then, the circumferential oil channel lubricates the rotating secondary surface formed by the inner hole of the first thrust ring and the low-speed sun gear and the axially limited friction surface through the radial oil hole or the end surface oil groove, so as to properly solve the problem of splashing in the low-speed edge area. Lubrication problems of parts in special locations.
- wheel-side reducer In this application, technical terms such as wheel-side reducer, wheel-side gearbox, and wheel-side drive device all refer to similar drive/deceleration components.
- Fig. 1 is a schematic diagram of the structure of a conventional wheel-side driving device.
- FIG. 2 is a schematic diagram of the combined sealing structure of the wheel drive system of the present invention.
- Figure 3 is a partial enlarged view of M in Figure 2.
- Fig. 4 is a partial enlarged view of position N in Fig. 3;
- Figure 5 is a schematic diagram of the seal structure marks in Figure 4.
- Figure 6 is a schematic diagram of the first structure of the wheel drive device of the wheel drive system of the present invention.
- Figure 7 is a schematic diagram of the second structure of the wheel drive device of the wheel drive system of the present invention.
- FIG. 8 is a schematic diagram of a third structure of the wheel drive device of the wheel drive system of the present invention.
- Figure 9-1 is a schematic diagram of the three-dimensional structure of the hub used in Figure 6;
- Figure 9-2 is a cross-sectional view of Figure 9-1.
- Figure 9-3 is another perspective view of the three-dimensional structure of Figure 9-1.
- Fig. 10-1 is a schematic diagram of another three-dimensional structure of the wheel hub used in Fig. 6;
- Figure 10-2 is a cross-sectional view of Figure 10-1.
- Figure 10-3 is another perspective view of the three-dimensional structure of Figure 10-1.
- Figure 11-1 is a schematic diagram of the three-dimensional structure of the hub used in Figure 7;
- Figure 11-2 is a cross-sectional view of Figure 11-1;
- Figure 11-3 is another perspective view of the three-dimensional structure of Figure 11-1.
- Fig. 12-1 is a schematic diagram of another three-dimensional structure of the wheel hub used in Fig. 7;
- Figure 12-2 is a cross-sectional view of Figure 12-1.
- Fig. 12-3 is another perspective view of the three-dimensional structure of Fig. 12-1;
- Figure 13 shows a front view of a wheel hub structure in the wheel drive system of the present invention.
- Figure 14 shows a left side view of the hub structure in Figure 13;
- Figure 15 shows a right side view of the hub structure in Figure 13;
- Figure 16 shows a cross-sectional view of the hub structure in Figure 13;
- Figure 17 shows a second cross-sectional view of the hub structure in Figure 13;
- Figure 18 is a schematic structural view of the gearbox lubricating device in the wheel drive system of the present invention.
- FIG. 19 is a schematic diagram of the three-dimensional structure of the end cover in FIG. 18.
- Figure 20 is a schematic sectional view of the end cap in Figure 18.
- FIG. 21 is a schematic diagram of the three-dimensional structure of the first axial thrust ring in FIG. 18.
- Fig. 22 is a schematic sectional view of the first axial thrust ring in Fig. 18;
- Figure 23 is a three-dimensional schematic diagram of another first axial thrust ring in the gearbox lubricating device of the present invention.
- FIG. 24 is a schematic sectional view of another first axial thrust ring in the gearbox lubricating device of the present invention. as well as
- Braking device 1 motor 2, gear device 3, frame 4, inner rim 5, wedge-shaped closing 5-1, convex ring 5-2, inner retaining wall 5-2', torque tube 6, connecting plate fixing groove 6 1.
- the wheel side reducer combined sealing structure of the wheel drive system is applied between the frame 4 connected to the rear axle of the vehicle and the torque tube 6 connected to the tires of the mine wheel side reducer torque output end shown in FIG. 2.
- the static ring 15 and the moving ring 16 are respectively fixed at the opposite positions of the frame 4 and the torsion tube 6, as shown in Fig. 3 and Fig.
- the buckle 15-5 of the static ring 15 is installed through the static ring mounting bolt 17 and anti-loosening washer 18 is assembled and fixed with the frame 4 of the wheel-side reducer, the inner spigot of the buckle 15-5 is in transition with the outer spigot of the frame 4, and the mounting surface 15-6 of the stationary ring 15 and the frame 4— Including the end surface and the spigot mating surface, the end surface sealant 19 is coated to prevent the lubricating oil from leaking from the assembly surface 15-6.
- the end face of the static ring 15 has three rings 15-1 from the outside to the inside in the radial direction, and the outer circle of the innermost ring has a groove 15-2 for inserting the seal-packing 20 -, the groove width is slightly
- the width of the packing 20 is smaller than the width of the packing 20.
- the two ends of the groove are in contact with the bottom surface to press the packing 20, and a fastening glue is applied between the packing 20 and the packing installation groove 15-2 to fix the packing in the circumferential direction. Will slide circumferentially during work.
- the inner circle of the innermost ring is tightly fitted with a throttle ring 21 and a skeleton oil seal 22.
- the throttle ring 21 has a set of four axially spaced radially extending comb teeth 21-1, the thickness of the comb teeth is basically the same as the gap width of the comb teeth, and the length of the comb teeth is 2-2.5 times the thickness of the comb teeth;
- the end of the ring 21 adjacent to the frame oil seal 22 has a limiting boss 21-2, which can prevent interference with the spring in the frame oil seal.
- the end surface of the movable ring 16 has a ring protrusion 16-1 inserted between adjacent ring rings to form a radial labyrinth seal A and a lower edge inner ring 16-7 radially outwardly and inwardly.
- the annular convex inner peripheral surface opposite to the groove 15-2 is in contact with the packing to form a packing seal B.
- the end of the moving ring 16 far from the stationary ring 15 is provided with a moving ring mounting surface 16-8 and a connecting plate mounting seat 16-6.
- the moving ring 16 is radially matched with the torsion tube 6 through the moving ring mounting surface 16-8 to define the moving ring.
- the outer circle of the lower inner ring 16-7 is in contact with the skeleton oil seal 22 to form a skeleton oil seal seal C, and a throttle ring seal D is formed at a position opposite to the throttle ring.
- the above structure of this embodiment forms the four internally related sealing links of the dust-proof labyrinth seal A, the packing seal B, the skeleton oil seal seal C, and the throttle ring seal D shown in Figure 5: the dust-proof labyrinth seal A. At least 2 labyrinth cavities are formed. Each dust-proof labyrinth cavity has a radial gap of 1.5-2mm and is filled with grease.
- This non-contact seal is used to block external large-size particles from entering the reducer, and Blocking and reducing part of the small particles of dust and water vapor entering the contact sealing surface of the inner packing; the mating surface 16-2 of packing seal B is in contact with a certain pressure, and relative sliding occurs when working; the grease in the gap is the packing mating surface 16-2 Provides adequate lubrication. Its function is mainly to prevent external water vapor and dust from entering the gear box; the surface hardness of the wear-resistant belt 26 of the skeleton oil seal seal C is not less than HRC 60.
- the combination of the contact and non-contact sealing structure of this embodiment not only forms four sealing links with their own characteristics: but also the dust-proof labyrinth seal A has the function of reducing particles entering the contact surface of the packing seal B and delaying the wear of the contact surface.
- the packing seal B has the function of blocking external water vapor from entering the skeleton oil seal seal C, helping its contact lip to not be corroded and worn by external pollution; the throttle gap and expansion cavity formed by the throttle ring seal D It can effectively suppress the pressure impact of the fluid on the lip of the skeleton oil seal and greatly reduce the risk of leakage; these sealing links form an organic combination relationship with each other in a very limited and narrow space. Therefore, the test proves that the sealing effect is comparable to the existing technology. Compared with, both reliability and durability are significantly improved.
- a wheel drive device of the wheel drive system is shown in Figure 6.
- the frame 4 is fixed on the car body, and the traction motor 2 mounted on the outer side determines the axis of rotation.
- the inner output end of the motor 2 is connected with the gear device 3
- the torque tube 6 supported in the frame 4 is in a transmission connection, so the high-speed torque output by the traction motor 2 can be transmitted to the torque tube 6 through the gear device 3 after speed reduction and torque increase.
- the flange at the outer end of the torsion tube 6 and the inner end of the hub 9 mounted outside the motor housing through inner and outer bearings 7, 10 are fixedly connected by fasteners, and the outer end of the motor 2 is connected to the frame 4 through the brake device 1, and The outer end of the hub 9 is connected to form an outer sealing device.
- the brake device 1 is composed of a brake caliper and a brake disc.
- the brake caliper is connected to the frame 4, and the brake disc is fixedly connected to the outer end of the motor 2 .
- the two ends of the hub 9 are respectively sleeved to fix the outer end of the inner rim 5 and the inner end of the outer rim 12.
- the outer end of the inner rim 5 has a wedge-shaped constriction 5-1
- the inner end of the hub 9 has a wedge-shaped stop 9-1 formed on the side of the radially outer extension edge 9-3 to match the wedge-shaped constriction 5-1.
- the stop 9-1 and the pressing ring 8'pressed on the outer end surface of the inner rim 5 form a clamping and fastening structure for the wedge-shaped narrowing 5-1 through bolts, and the radially outer edge 9-3 and the pressing ring 8
- the opposite end faces respectively have an edge ring concave 9-2 and a convex ring 5-2 that match each other, so as to ensure that the inner and outer sides of the pressing ring 8'are reliably pressed on the hub 9 and the inner rim 5, respectively.
- a perforated inner baffle ring 12-1 extends near the inner end of the outer rim 12 toward the axis of rotation.
- the inner baffle ring 12-1 abuts against the outer end surface with threaded holes on the radial outer edge 9-4 of the outer end of the hub 9, and the bolt Passing through the hole of the inner baffle ring 12-1 and screwing into the threaded hole of the hub 9 forms a pressing and fastening structure.
- FIG. 9-1, 9-2, and 9-3 One of the specific structures of the hub in this embodiment is shown in Figures 9-1, 9-2, and 9-3.
- the two ends of the hub barrel 9-6 are respectively a radially outer edge 9-3 and a radially outer edge 9- 4;
- One side of the radially outer edge 9-3 forms a wedge-shaped stop 9-1 that matches the wedge-shaped narrowing 5-1, and the other side axially extends a reduced-diameter connecting ring 9-7;
- the radial outer edge 9- 4 The connecting ring 9-9 with a reduced diameter extends axially;
- the end surface of the radially outer edge 9-3 is evenly spaced around the circumference for forming a wedge-shaped narrowing 5-1 clamping and fastening structure through the threaded bolt and the pressing ring 8'
- the perforation of the connecting ring 9-7 is evenly spaced with threaded holes for fixing connection with the torsion tube 6;
- FIG. 10-1, 10-2, and 10-3 Another lightweight design of the wheel hub in this embodiment is shown in Figures 10-1, 10-2, and 10-3.
- the difference from the design of Figures 9-1, 9-2, and 9-3 is that the hub tube 9- 6.
- a reinforcing arc 9-5' connecting the radially outer edge 9-3 and the radially outer edge 9-4 is evenly distributed in the circumferential direction outside the outer circle.
- the hub and the inner and outer rims are separately fastened and firmly connected, wherein the hub and the outer rim are completely connected by fasteners, and the hub and the inner rim are tightened by a wedge-shaped inclined surface, thus significantly reducing friction and torque transmission.
- the advantages of strong radial bearing capacity are basically maintained; no hub adapter is required, the structure is simple, and the manufacturing and assembly processes are simple.
- the second type of wheel drive device of the wheel drive system is shown in Figure 7.
- the basic structure is the same as that shown in Figure 6, except that a perforated inner wall 5 extends from the outer end of the inner rim 5 toward the axis of rotation.
- the inner end of the hub 9 has a flange flange 9-2', the outer end surface of the flange flange 9-2' is attached to the inner end surface of the inner retaining wall 5-2', through the bolts,
- the nut forms a fastening structure.
- the inner end of the outer rim 12 extends toward the axis of rotation, and a perforated inner retaining ring 12-2 is attached to the outer end surface of the threaded hole of the hub 9.
- the bolts pass through the perforation of the inner retaining ring 12-2 and the perforation of the outer sealing device at the same time.
- the threaded holes screwed into the periphery of the outer end surface of the hub 9 form a pressing and fastening structure and a fixed structure with the outer sealing device.
- FIG. 11-1, 11-2, and 11-3 One of the specific structures of the hub in this embodiment is shown in Figures 11-1, 11-2, and 11-3.
- the two ends of the hub barrel 9-6 are respectively a radially outer edge 9-3 and a radially outer edge 9- 4;
- the end surface of the radially outer edge 9-3 has a perforation spaced uniformly distributed on the outer circumference to form a fixed structure through the attachment of the threaded bolts and the inner retaining wall 5-2', and has a uniform distribution of the inner circumferential space and the torsion tube 6 A threaded hole for fixing;
- the outer end surface of the radial outer edge 9-4 has threaded holes that are evenly spaced around the circumference for fastening the inner retaining ring 12-2 and the outer sealing device at the same time.
- the outer circumferential surface of the hub tube 9-6 is evenly distributed with reinforcing ribs 9-5 connecting the radial outer edge 9-3 and the radial outer edge 9-4 at intervals
- FIG. 12-1, 12-2, and 12-3 Another lightweight design of the wheel hub in this embodiment is shown in Figures 12-1, 12-2, and 12-3. The difference from the design of Figures 11-1, 11-2, and 11-3 is that the hub tube 9- 6. A reinforcing arc 9-5' connecting the radially outer edge 9-3 and the radially outer edge 9-4 is evenly distributed in the circumferential direction outside the outer circle.
- the two ends of the hub are respectively sleeved and fixedly connected to the outer end of the inner rim and the inner end of the outer rim.
- the advantage is that the hub and the inner and outer rims are completely connected by fasteners, so it can completely avoid the slipping phenomenon of friction and torsion, and the force of each bolt clamping and fastening connection is only half of the original force. Better; the same does not require a hub adapter, the structure is simple, and the manufacturing and assembly processes are simple.
- the third wheel drive device of the wheel drive system is shown in Figure 8.
- the basic structure is the same as that shown in Figure 6, and the outer end of the inner rim 5 has a wedge-shaped constriction 5-1, and the inner end of the hub 9 has a radial One side of the outer edge 9-3 is formed with a wedge-shaped stop 9-1 that matches the wedge-shaped constriction 5-1.
- the inner end of the outer rim 12 has a wedge-shaped constriction, and the outer end of the hub 9 is equipped with a hypotenuse wedge ring 11'.
- the edge wedge ring 11' has a wedge-shaped inclined surface that matches the wedge-shaped constriction of the inner end of the outer rim 12; the significant difference is that the outer end of the beveled edge wedge ring 11' has a reduced diameter stop 11-2 that presses the outer end of the hub 9. And the inner end of the oblique side extends out of the wedge plug 11-1 inserted into the radially spaced distance between the hub 9 and the outer rim 12.
- the wedge-shaped stop 9-1 at the inner end of the hub 9 and the wedge-shaped inclined surface of the outer beveled wedge ring 11' respectively form a clamp for two wedge-shaped closings with the left clamp ring 8z and the right clamp ring 8y pressed on the outer end surface of the inner rim 5 Support fastening structure.
- the circumferentially uniformly distributed through holes of the hypotenuse wedge ring 11' are equipped with stepped locking bolts 13 passing through the right clamp ring 8y and the left clamp ring 8z and then screwed into the radial outer edge 9-3 of the hub 9.
- the small-diameter section and the large-diameter section of the tightening bolt 13 have reverse threads for screwing the left nut 13z and the right nut 13y respectively, and the outer end is equipped with a lock nut 14; the left nut 13z and the right nut 13y have non-circular outlines (such as six sides). Shape, etc.) are matched with the counterbore at the corresponding positions of the left clamp ring 8z and the right clamp ring 8y to form a moving pair.
- the two ends of the hub are respectively sleeved and fixedly connected to the outer end of the inner rim and the inner end of the outer rim.
- the advantage is that the inner and outer rims are symmetrical and universal, and they are easy to manufacture. When assembling, you only need to install the locking bolt from one end to tighten the rim through the wedge-shaped inclined surface with the two-way thread.
- the clamp ring can ensure sufficient anti-skid clamping force without strict Strict axial precision requirements, strong radial bearing capacity, and the two opposite thread pairs have the function of balancing the clamping force of the inner and outer rims, so that the entire device is balanced and reasonable.
- a wheel drive hub of the wheel drive system is shown in Figures 9-1, 9-2, and 9-3.
- the two ends of the cylindrical hub tube 9-6 are the radially outer edge 9-3 and the radially outer edge respectively.
- Edge 9-4; one side of the radially outer edge 9-3 is formed with a wedge-shaped stop 9-1 matching the wedge-shaped narrowing 5-1 of the inner rim 5 (see Figure 6), and the other side axially extends a reduced diameter Connect the circle 9-7.
- the radially outer edge 9-4 extends axially from a reduced-diameter connecting ring 9-9; the end surface of the radially outer edge 9-3 is evenly spaced around the circumference for forming by a bolt and a pressing ring 8'(see Figure 6)
- the end surface of the connecting ring 9-7 is evenly spaced with threaded holes for fixing to the torsion tube 6 (see FIG. 6).
- the end surface of the radial outer edge 9-4 is evenly distributed with threaded holes for fixing the inner baffle ring 12-1 (see Figure 6) of the outer rim 12 at intervals, and the end surface of the connecting ring 9-9 is evenly distributed with the outer sealing device ( See Figure 6) Fixed threaded holes.
- the outer circumferential surface of the hub tube 9-6 is evenly distributed with reinforcing ribs 9-5 connecting the radially outer edge 9-3 and the radially outer edge 9-4 at circumferential intervals, thereby realizing the lightweight of the wheel hub.
- the wheel drive device using the hub of this embodiment is shown in Figure 6, the frame 4 is fixed on the car body, the traction motor 2 mounted on the outside determines the axis of rotation, and the inner output end of the motor 2 is connected with the gear device 3
- the torque tube 6 supported in the frame 4 is in a transmission connection, so the high-speed torque output by the traction motor 2 can be transmitted to the torque tube 6 through the gear device 3 after speed reduction and torque increase.
- the flange at the outer end of the torsion tube 6 and the inner end of the hub 9 mounted outside the motor housing through inner and outer bearings 7, 10 are fixedly connected by fasteners, and the outer end of the motor 2 is formed by the brake device 1 and the outer end of the hub 9
- the outer seal is connected, and the braking device 1 is composed of a moving piece and a static piece distributed at intervals, wherein the static piece is connected to the frame 4, and the moving piece is fixedly connected to the outer end of the motor 2.
- the two ends of the hub 9 are respectively sleeved to fix the outer end of the inner rim 5 and the inner end of the outer rim 12.
- the outer end of the inner rim 5 has a wedge-shaped constriction 5-1
- the inner end of the hub 9 has a wedge-shaped stop 9-1 formed on the side of the radially outer extension edge 9-3 to match the wedge-shaped constriction 5-1.
- the stop 9-1 and the pressing ring 8'pressed on the outer end surface of the inner rim 5 form a clamping and fastening structure for the wedge-shaped narrowing 5-1 through bolts, and the radially outer edge 9-3 and the pressing ring 8
- the opposite end faces respectively have an edge ring concave 9-2 and a convex ring 5-2 that match each other, so as to ensure that the inner and outer sides of the pressing ring 8'are reliably pressed on the hub 9 and the inner rim 5, respectively.
- a perforated inner baffle ring 12-1 extends near the inner end of the outer rim 12 toward the axis of rotation.
- the inner baffle ring 12-1 abuts against the outer end surface with threaded holes on the radial outer edge 9-4 of the outer end of the hub 9, and the bolt Passing through the hole of the inner baffle ring 12-1 and screwing into the threaded hole of the hub 9 forms a pressing and fastening structure.
- the hub and the inner and outer rims are separately fastened and firmly connected, wherein the hub and the outer rim are completely connected by fasteners, and the hub and the inner rim are tightened by a wedge-shaped inclined surface, thus significantly reducing friction and torque transmission.
- the advantages of strong radial bearing capacity are basically maintained; no hub adapter is required, the structure is simple, and the manufacturing and assembly processes are simple.
- FIG. 10-1 Another wheel hub of the wheel drive system is shown in Figures 10-1, 10-2, and 10-3.
- the difference from Figure 9 is that the outer circumference of the hub tube 9-6 is evenly spaced and connected to the radial outer edge 9 -3 and the reinforced arc 9-5' of the radial outer edge 9-4, so that the material mass can be distributed on the outer circle of the hub tube as much as possible, so as to have a better torque transmission performance.
- the hub of this embodiment can also be applied to the wheel drive device shown in FIG. 6.
- FIG. 11-1, 11-2, and 11-3 Another wheel drive hub of the wheel drive system is shown in Figures 11-1, 11-2, and 11-3.
- the two ends of the hub tube 9-6 are the radially outer edge 9-3 and the radially outer edge 9 respectively. -4; the end surface of the radially outer extension edge 9-3 has a perforation spaced uniformly distributed on the outer circumference to form a fixed structure by fitting bolts to the inner retaining wall 5-2' (see Figure 7) of the inner rim 5, and It has a threaded hole for fixing the torsion tube 6 (see Figure 7) with an evenly spaced inner circumference; the outer end surface of the radial outer edge 9-4 has a uniformly spaced circumference for fastening the outer rim 12 and the inner retaining ring 12-2 at the same time And the threaded hole of the outer sealing device (see Figure 7).
- the outer circumferential surface of the hub tube 9-6 is evenly distributed with reinforcing ribs 9-5 connecting the radially outer edge 9-3
- the wheel edge driving device using the hub of this embodiment is shown in Fig. 7, and the basic structure is the same as Fig. 6, except that a perforated inner baffle wall 5-2' extends from the outer end of the inner rim 5 toward the axis of rotation.
- the inner end of the hub 9 has a flange flange 9-2', and the outer end surface of the flange flange 9-2' is attached to the inner end surface of the inner retaining wall 5-2', which is fastened by bolts and nuts that are worn structure.
- the inner end of the outer rim 12 extends toward the axis of rotation, and a perforated inner retaining ring 12-2 is attached to the outer end surface of the threaded hole of the hub 9, and the bolt passes through the perforation of the inner retaining ring 12-2 and the brake device 1 at the same time. Perforated and screwed into the threaded hole around the outer end surface of the hub 9 to form a pressing and fastening structure and a fixed connection structure with the brake device 1.
- the two ends of the hub are respectively sleeved and fixedly connected to the outer end of the inner rim and the inner end of the outer rim.
- the advantage is that the hub and the inner and outer rims are completely connected by fasteners, so it can completely avoid the slipping phenomenon of friction and torsion, and the force of each bolt clamping and fastening connection is only half of the original force. Better; the same does not require a hub adapter, the structure is simple, and the manufacturing and assembly processes are simple.
- FIG. 11 The basic structure of another wheel hub is the same as that shown in Figure 11, as shown in Figures 12-1, 12-2, and 12-3.
- the difference from Figure 11 is that the outer circumference of the hub tube 9-6 is evenly spaced and connected in the radial direction.
- the reinforcing arc 9-5' of the outer edge 9-3 and the radial outer edge 9-4 can distribute the material mass on the outer circle of the hub tube as much as possible, thereby having better torque transmission performance.
- a wheel hub structure of the wheel drive system is shown in Figures 13-17, which includes a body 30 integrally formed in an integral forging manner.
- the body includes an inner ring 34, a radially outer edge 9-4, and a radially outer edge 9- 3.
- the radially outer edge 9-4 and the radially outer edge 9-3 are respectively located on both axial sides of the inner ring 34, and the radially outer edge 9-4 and the radially outer edge 9-3 All protrude from the inner ring 34 radially outwards.
- the hub further includes an outer ring 31, which is located radially outside of the inner ring 34 in a radially spaced manner.
- the outer ring 31 and the inner ring 34 form a double-layer structure, and the outer ring 31 is made of material.
- the connection is connected to the radially outer edge 9-4 and the radially outer edge 9-3.
- the outer ring 31 is fixedly connected to the radial outer edge 9-4 and the radial outer edge 9-3 by welding, and the outer ring 31 is connected to the radial outer edge 9-4 and the radial outer edge 9-4.
- a second welding seam 33 is formed between the outer extending edges 9-3, respectively.
- An annular cavity 35 is formed between the inner ring 34 and the outer ring 31.
- the outer ring 31 includes a first outer ring portion 31-1 and a second outer ring portion 31-2 in a curved plate shape, and the first outer ring portion 31-1 and the second outer ring portion 31-2 are located Different positions of the hub in the circumferential direction are spliced into a ring shape (in other possible situations, the outer ring 31 is an incomplete ring shape after splicing, covering only a part of the hub in the circumferential direction), and The first outer ring portion 31-1 and the second outer ring portion 31-2 are connected to each other by welding, and a first welding seam 32 is formed between the first outer ring portion 31-1 and the second outer ring portion 31-2.
- the outer ring has a through hole 36.
- the first outer ring portion 31-1 and the second outer ring portion 31-2 may also be columnar structures.
- the first outer ring portion and The size of the second outer ring portion in the axial direction of the hub is larger than the size of the first outer ring portion and the second outer ring portion in the radial and/or circumferential direction of the hub, and other technical features are the same as the foregoing embodiment.
- the columnar structure may be a columnar, rib-shaped, rib-shaped, or other structure that plays a strengthening role.
- the forging can eliminate the defects such as the as-cast looseness caused by the metal smelting process, and optimize the microstructure. Since the forging preserves the complete metal streamline, the mechanical properties of the forging are generally better than those of the same material.
- the castings are suitable for environments with more severe working conditions.
- the basic structure of the gearbox lubrication device of the wheel drive system of the present invention is shown in Figures 18-24.
- One end of the horizontal shaft low-speed sun gear 39 is axially limited and supported by the first axial thrust ring 38 through its central axis, and the other end passes through
- the counterbore on the end face is axially limited and supported by the second axial thrust ring 46.
- the first thrust ring 38 is embedded in the counterbore at the inner end of the box end cover 37, and the second axial thrust ring 46 is sleeved on the sun gear reduced-diameter shaft end of the front stage 45 (high-speed stage).
- the box end cover 37 is sealed and fixed on the low-speed planet carrier 40 as a shell (rotatable).
- the low-speed sun gear 39 is externally meshed with the low-speed planetary gear 41, and the low-speed planetary gear 41 is in the fixed ring gear 44.
- the low-speed planetary gear 41 is supported by the low-speed planetary pin 42 through the low-speed planetary gear bearing 43, and the planetary pin 42 is supported in the pin holes evenly distributed on the inner end surface of the low-speed planet carrier 40.
- an arc-shaped oil collecting box 37-1 located above the first thrust ring 38 and communicating with the bottom oil outlet 37-3 is fixed on the box end cover 37.
- the arc-shaped oil collecting box The box 37-1 is located between the counterbore outer ring of the first thrust ring 38 and the inner circle of the flange ring of the box end cover 37. It is composed of thin-walled metal plates welded to the box end cover 37, and the manufacturing process is simple and convenient.
- the oil collecting box 37-1 has an end surface oil inlet 37-2 adjacent to and facing the meshing position of the low-speed sun gear 39 and the low-speed planetary gear 41.
- the first thrust ring 38 is shown in Figure 21 and Figure 22.
- the outer circle has an arc-bottomed circumferential oil passage 38-1 corresponding to the oil outlet 37-3, and has four circumferentially uniformly distributed, radially extending outer shallow inner depths.
- the circular arc bottom end surface oil groove 38-3, the circumferential oil passage 38-1 communicates with its inner hole through the radial oil hole 38-2 which is evenly distributed in the circumferential direction and whose angular position corresponds to the end surface oil groove 38-3.
- the circumferential oil passage 38-1 is uniformly distributed in the outer circumferential direction of the first thrust ring 38 and the angular position corresponds to the axial oil passage 38-2' and the end surface of the end surface oil groove 38-3.
- the oil tank is connected.
- the circumferential oil passage 38-1 can also communicate with its inner hole through a radial oil hole 38-2 that is evenly distributed in the circumferential direction and whose angular position corresponds to the end surface oil groove 38-3, and also communicates with its inner hole through the outer circumferential direction of the first thrust ring 38.
- the axial oil passage 38-2' arranged in an angular position corresponding to the end surface oil groove 38-3 communicates with the end surface oil groove.
- the lubrication device of this embodiment is provided with an oil collecting box and a lubrication channel, which can realize full lubrication of low-speed and hard-to-splash-lubricated parts, so as to meet the requirements of ensuring the normal operation of the gearbox for a long time.
- the device has a simple structure and low cost. Practice has shown that it can effectively solve the lubrication problem of the special internal position of the gearbox and it is difficult to lubricate the parts by conventional methods.
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- Combustion & Propulsion (AREA)
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- Motor Power Transmission Devices (AREA)
- Gasket Seals (AREA)
- General Details Of Gearings (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
Description
Claims (33)
- 一种车轮驱动系统,包括轮边减速器,所述轮边减速器包括机架和与车轮连接的扭力管,以及设置于所述机架和所述扭力管之间的密封结构,所述密封结构包括固定于机架的静环和与所述静环相对设置并且固定于扭力管的动环,其特征在于:所述静环的端面径向由外至内具有多个环圈,最内层的环圈内圆紧配装有节流环和骨架油封;所述动环包括下沿内圈,所述下沿内圈的外圆与骨架油封接触构成骨架油封密封,与节流环相对处构成节流环密封。
- 根据权利要求1所述的车轮驱动系统,其特征在于,所述节流环具有一组轴向间隔的径向延伸梳齿。
- 根据权利要求2所述的车轮驱动系统,其特征在于,所述梳齿的厚度与梳齿之间隙宽度基本一致,所述梳齿的长度是梳齿厚度的2-2.5倍。
- 根据权利要求1所述的车轮驱动系统,其特征在于,所述节流环邻近骨架油封的一端具有限位凸台。
- 根据权利要求1所述的车轮驱动系统,其特征在于,所述静环的端面径向由外至内具有至少三道环圈,最内层的环圈外圆具有嵌装密封件的卡槽;所述动环的端面径向外至内具有嵌入相邻环圈之间构成径向迷宫密封的环凸,与所述卡槽相对的环凸内周表面与密封件接触构成密封件密封。
- 根据权利要求1所述的车轮驱动系统,其特征在于,还包括轮毂,所述轮毂的两端分别套装固连内轮辋外端和外轮辋内端。
- 根据权利要求6所述的车轮驱动系统,其特征在于,所述内轮辋的外端具有楔形收口,所述轮毂的内端具有与所述楔形收口相配的楔形止口,所述楔形止口与压持在内轮辋外端面的压圈或夹圈通过穿装的螺栓形成对楔形收口的夹持紧固结构。
- 根据权利要求6所述的车轮驱动系统,其特征在于,所述内轮辋的外端附近朝旋转轴线延伸出带穿孔的内挡壁,所述轮毂的内端具有法兰翻边,所述法兰翻边的外端面与内挡壁的内端面贴合,通过穿装的紧固件形成紧固结构。
- 根据权利要求6所述的车轮驱动系统,其特征在于,所述外轮辋的内端附近朝旋转轴线延伸出贴靠在轮毂具有螺纹孔外端面的带穿孔的内挡环或内挡圈,紧固件穿过内挡环或内挡圈的穿孔拧入轮毂的螺纹孔形成压持紧固结构。
- 根据权利要求6所述的车轮驱动系统,其特征在于,所述外轮辋的内端具有楔形收口,所述轮毂的外端装有斜边楔环,所述斜边楔环具有与外轮辋内端楔形收口相配的楔形斜面;所述斜边楔环的外端具有压住轮毂外端的缩径,且其斜边内端延伸出插入轮毂和外轮辋径向间隔的楔插头;所述楔形斜面与右夹圈形成对楔形收口的夹持紧固结构。
- 根据权利要求10所述的车轮驱动系统,其特征在于,所述内轮辋的外端具有楔形收口,所述轮毂的内端具有径向外延缘一侧形成的与楔形收口相配的楔形止口,所述楔形止口与压持在内轮辋外端面的左夹圈通过穿装的螺栓形成对楔形收口的夹持紧固结构;所述斜边楔环的通孔装有穿过右夹圈和左夹圈后拧入所述径向外延缘的台阶状锁紧螺栓,所述锁紧螺栓的小径段和大径段具有分别旋拧左螺母和右螺母的反向螺纹,且其外端装有锁定螺母;所述左螺母和右螺母的非圆外廓分别与左夹圈和右夹圈对应位置的沉孔相配构成移动副。
- 根据权利要求1所述的车轮驱动系统,其特征在于,还包括轮毂,所述轮毂两端分别为径向外延缘和径向外缘,所述径向外延缘的端面周边间隔均布外圈穿孔以及内圈螺纹孔;所述径向外缘的端面至少周边间隔均布一圈螺纹孔。
- 根据权利要求1所述的车轮驱动系统,其特征在于,还包括轮毂,所述轮毂包括本体,所述本体包括内环、径向外缘和径向外延缘,所述径向外缘和径向外延缘分别位于所述内环的轴向两侧,且所述径向外缘和径向外延缘均沿径向向外凸出于所述内环,其特征在于,还包括外环,所述外环以径向间隔的方式位于所述内环的径向外侧,且所述外环固定连接于所述径向外缘和径向外延缘。
- 根据权利要求13所述的车轮驱动系统,其特征在于,所述本体为一体成型,所述外环通过材料连接的方式连接于所述本体。
- 根据权利要求14所述的车轮驱动系统,其特征在于,所述外环通过焊接方式与所述径向外缘和径向外延缘固定连接。
- 根据权利要求14所述的车轮驱动系统,其特征在于,所述本体为整体锻造而成的一体结构。
- 根据权利要求13所述的车轮驱动系统,其特征在于,所述内环与外环之间具有环形空腔。
- 根据权利要求13所述的车轮驱动系统,其特征在于,所述外环包括第一外环部和第二外环部,所述第一外环部和第二外环部位于所述轮毂周向的不同位置。
- 根据权利要求18所述的车轮驱动系统,其特征在于,所述第一外环部和第二外环部为柱状加强结构,所述第一外环部和第二外环部沿所述轮毂轴向的尺寸大于所述第一外环部和第二外环部沿所述轮毂径向和/或周向的尺寸。
- 根据权利要求18所述的车轮驱动系统,其特征在于,所述第一外环部和第二外环部为弯曲的板状。
- 根据权利要求20所述的车轮驱动系统,其特征在于,所述第一外环部和第二外环部通过焊接相互连接。
- 根据权利要求13所述的车轮驱动系统,其特征在于,所述外环仅覆盖所述轮毂周向的一部分。
- 根据权利要求13任一项所述的车轮驱动系统,其特征在于,所述外环上具有通孔。
- 根据权利要求1所述的车轮驱动系统,其特征在于:还包括齿轮箱润滑装置,所述齿轮箱润滑装置包括两端分别轴向限位支撑于第一和第二轴向推力环的水平轴太阳轮,所述第一推力环嵌装在箱体端盖内端的沉孔内,所述箱体端盖封盖固定在作为壳体的行星架上,所述太阳轮与行星轮外啮合,所述行星轮与固定的齿圈内啮合,所述行星轮通过行星轮轴承支撑于行星销轴;其特征在于:所述箱体端盖上固定有位于第一推力环上方且与底部出油孔连通的集油盒,所述集油盒具有邻近且正对着太阳轮和行星轮啮合位置的入油口;所述第一推力环的外圆具有位置对应出油孔的周向油道以及径向延伸的端面油槽,所述周向油道至少通过径向油孔与其内孔连通,或通过轴向油道与端面油槽连通。
- 一种轮边减速器组合密封结构,包括固定与机架的静环和与之相对固连在扭力管的动环,其特征在于:所述静环的端面径向由外至内具有至少三道环圈;最内层的环圈外圆具有嵌装盘根的卡槽,内圆紧配装有节流环和骨架油封,所述节流环具有一组轴向间隔的径向延伸梳齿;所述动环的端面径向外至内具有嵌入相邻环圈之间构成径向迷宫密封的环凸以及下沿内圈;与所述卡槽相对的环凸内周表面与盘根接触构成盘根密封;所述下沿内圈的外圆与骨架油封接触构成骨架油封密封;与节流环相对处构成节流环密封。
- 根据权利要求25所述的轮边减速器组合密封结构,其特征在于:所述梳齿的厚度与梳齿之间隙宽度基本一致,所述梳齿的长度是梳齿厚度的2-2.5倍。
- 根据权利要求25所述的轮边减速器组合密封结构,其特征在于:所述节流环邻近骨架油封的一端具有限位凸台。
- 一种轮边驱动装置,包括安装在机架外侧确定旋转轴线的电机,所述电机的内输出端通过齿轮装置与支撑于机架的扭力管传动连接;所述扭力管与套装在电机外的轮毂内端固连,所述电机的外端通过制动装置与机架连接,并与轮毂的外端衔接组成外密封装置;其特征在于:所述轮毂的两端分别套装固连内轮辋外端和外轮辋内端。
- 根据权利要求28所述的轮边驱动装置,其特征在于:所述内轮辋的外端具有楔形收口,所述轮毂的内端具有与楔形收口相配的楔形止口,所述楔形止口与压持在内轮辋外端面的压圈通过穿装的螺栓形成对楔形收口的夹持紧固结构;所述外轮辋的内端附近朝旋转轴线延伸出贴靠在轮毂具有螺纹孔外端面的带穿孔内挡环,紧固件穿过内挡环的穿孔拧入轮毂的螺纹孔形成压持紧固结构。
- 根据权利要求28所述的轮边驱动装置,其特征在于:所述内轮辋的外端附近朝旋转轴线延伸出带穿孔的内挡壁,所述轮毂的内端具有法兰翻边,所述法兰翻边的外端面与内挡壁 的内端面贴合,通过穿装的紧固件形成紧固结构;所述外轮辋的内端附近朝旋转轴线延伸出贴靠在轮毂具有螺纹孔外端面的带穿孔内挡圈,紧固件穿过内挡圈的穿孔拧入轮毂外端面的螺纹孔形成压持紧固结构。
- 根据权利要求28所述的轮边驱动装置,其特征在于:所述内轮辋的外端具有楔形收口,所述轮毂的内端具有径向外延缘一侧形成的与楔形收口相配的楔形止口;所述外轮辋的内端具有楔形收口,所述轮毂的外端装有斜边楔环,所述斜边楔环具有与外轮辋内端楔形收口相配的楔形斜面;所述斜边楔环的外端具有压住轮毂外端的缩径,且其斜边内端延伸出插入轮毂和外轮辋径向间隔的楔插头;所述轮毂内端的楔形止口和其外斜边楔环的楔形斜面分别与压持在内轮辋外端面的左夹圈和右夹圈形成对两侧楔形收口的夹持紧固结构。
- 根据权利要求31所述的轮边驱动装置,其特征在于:所述斜边楔环的通孔装有穿过右夹圈和左夹圈后拧入所述径向外延缘的台阶状锁紧螺栓,所述锁紧螺栓的小径段和大径段具有分别旋拧左螺母和右螺母的反向螺纹,且其外端装有锁定螺母;所述左螺母和右螺母的非圆外廓分别与左夹圈和右夹圈对应位置的沉孔相配构成移动副。
- 一种轮边驱动轮毂,包括轮毂筒,所述轮毂筒的两端分别为径向外延缘和径向外缘;其特征在于:所述径向外延缘的端面周边间隔均布外圈穿孔以及内圈螺纹孔;所述径向外缘的端面至少周边间隔均布一圈螺纹孔。
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CN201921520456.5U CN211423346U (zh) | 2019-09-12 | 2019-09-12 | 一种齿轮箱润滑装置 |
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CN110435410A (zh) * | 2019-09-19 | 2019-11-12 | 中车戚墅堰机车车辆工艺研究所有限公司 | 一种轮边驱动装置 |
CN210437004U (zh) * | 2019-09-19 | 2020-05-01 | 中车戚墅堰机车车辆工艺研究所有限公司 | 一种轮边驱动装置 |
CN210436907U (zh) * | 2019-09-19 | 2020-05-01 | 中车戚墅堰机车车辆工艺研究所有限公司 | 一种轮边驱动轮毂 |
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