CN110539812B - Distributed independent electrically driven wheel transmission device for light tracked vehicle - Google Patents
Distributed independent electrically driven wheel transmission device for light tracked vehicle Download PDFInfo
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- CN110539812B CN110539812B CN201910855374.4A CN201910855374A CN110539812B CN 110539812 B CN110539812 B CN 110539812B CN 201910855374 A CN201910855374 A CN 201910855374A CN 110539812 B CN110539812 B CN 110539812B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 134
- 238000007789 sealing Methods 0.000 claims description 14
- 230000007704 transition Effects 0.000 claims description 14
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims 1
- 238000013461 design Methods 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
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- 230000009471 action Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
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Classifications
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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
- B60K7/0007—Disposition of motor in, or adjacent to, traction wheel the motor being electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/065—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels employing disc
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D55/00—Endless track vehicles
- B62D55/08—Endless track units; Parts thereof
- B62D55/12—Arrangement, location, or adaptation of driving sprockets
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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
- B60K2007/0061—Disposition of motor in, or adjacent to, traction wheel the motor axle being parallel to the wheel axle
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Braking Arrangements (AREA)
Abstract
The invention belongs to the technical field of tracked vehicle driving devices, and particularly relates to a wheel transmission device which is particularly suitable for a distributed independent electric driven light high-speed tracked vehicle.
Description
Technical Field
The invention belongs to the technical field of tracked vehicle transmission devices, and particularly relates to a transmission device of a light high-speed tracked vehicle.
Background
The crawler-type vehicle has high adhesive force and small average ground specific pressure, is suitable for working on a soft road surface, has good trafficability for road surface working conditions with rough terrain, and is widely applied to industry and agriculture at present.
The type of the transmission device of the tracked vehicle is closely related to the selection of the power device, the structure of the transmission device matched with the internal combustion engine is complex, the traveling speed of the transmission device matched with the hydraulic system is low, the driving torque is large, the quality of the transmission device is heavy, the transmission device and the transmission device are not applicable to the power device and the transmission device of the tracked vehicle with light high speed, and the transmission device with distributed electric drive with high power density and compact structure is suitable.
Chinese patent CN106763567a describes a power integrated transmission device for a tracked vehicle, which adopts an internal combustion engine driving and a hybrid power driving mode, and still adopts a side transmission arrangement for the input transmission device of the hybrid power, and the side transmission device has a complex structure and large mass, and is not suitable for a light tracked vehicle.
The hydraulic transmission described in japanese patent application laid-open publication No. 2012-40944 is such that power output from an engine is transmitted to a wheel drive shaft via a dry clutch mechanism, an HST as a hydrostatic continuously variable transmission, a planetary gear mechanism, a forward/reverse switching mechanism, and a sub-transmission in this order, and such a complex transmission is applicable to only a heavy low-speed tracked vehicle and is not applicable to a light high-speed tracked vehicle.
For the distributed motor arrangement scheme of the light high-speed running tracked vehicle, the motor with high power density can meet the requirement of longitudinal running dynamic property and the requirement of steering running condition due to smaller mass of the whole vehicle. However, in the process of high-speed running, the stress of the wheel transmission device is complex due to the difference of road conditions, the wheel transmission device is not only subjected to the bending moment action of the tension force of the crawler belt on the driving wheel, but also subjected to the action of the driving torque, and the wheel transmission device structure of the conventional crawler vehicle is not suitable for the crawler vehicle running at a light speed, so that the research, development and manufacturing of the light high-speed crawler vehicle are not limited by the obstruction of the wheel transmission device, and therefore, the design of the wheel transmission device which is suitable for the light high-speed crawler vehicle and can bear complex load is needed.
Disclosure of Invention
The invention aims to provide a distributed independent electric drive wheel transmission device suitable for a light high-speed tracked vehicle, which can solve the problems of the arrangement scheme of the wheel transmission device of the light tracked vehicle at present and the driving stability and power guarantee of the whole vehicle under the complex road surface working condition.
The technical scheme for realizing the invention is as follows: the utility model provides a light-duty high-speed tracked vehicle distributing type independent electric drive wheel transmission, including driving motor, decelerator, the semi-axis, the transmission cover, brake disc connects the hub shell, brake caliper subassembly, the automobile body, transmission cover supporting seat, the sealing member, lock nut, outer bearing, inner bearing, wheel hub subassembly, wherein the transmission cover, brake disc connects the hub shell, brake caliper subassembly, the sealing member, lock nut, outer bearing, inner bearing, wheel hub subassembly, the semi-axis is located the outside of automobile body, driving motor, decelerator, transmission cover supporting seat is located the automobile body inside, the transmission cover body is hollow cylindric, hollow cylindric is to the outside offset certain distance of interior terminal surface is equipped with the ring flange, the hollow cylinder penetrates through the transmission sleeve mounting hole of the vehicle body to be embedded into the vehicle body, the inner side surface of the flange plate is attached to the outer side surface of the vehicle body, the inner side of the vehicle body is provided with a transmission sleeve supporting seat, the transmission sleeve supporting seat body is a hollow cylinder, the outer side is provided with a reinforcing rib, the reinforcing rib is fixedly connected with the vehicle body, the hollow cylinder of the transmission sleeve supporting seat is coaxial with the transmission sleeve, the inner diameter of the hollow cylinder of the transmission sleeve supporting seat is attached to the outer diameter of the inner hollow cylinder of the transmission sleeve, the hollow cylinder at the outer side surface of the transmission sleeve flange is provided with three steps, the radius of the steps is sequentially reduced from inside to outside, and therefore, the transmission sleeve supporting seat is sequentially a first cylinder, a second cylinder, a third cylinder and a fourth cylinder, the brake disc connecting hub sleeve body is a hollow cylinder, the inner wall of the inner end of the brake disc connecting hub sleeve hollow cylinder is provided with 2 layers of annular grooves concentric with the hollow cylinder, the inner annular grooves are respectively an inner first annular groove and an inner second outer annular groove, the inner wall of the outer end of the brake disc connecting hub sleeve hollow cylinder is provided with an outer annular groove concentric with the hollow cylinder, the outer side surface of the brake disc connecting hub sleeve hollow cylinder is respectively provided with an annular boss at the inner end surface, the outer end surface and the middle, and is respectively called a brake disc, a connecting flange disc and a supporting ring, a sealing piece is arranged between the second cylinder of the transmission sleeve and the inner first annular groove of the brake disc connecting hub sleeve, an inner bearing is arranged between the third cylinder of the transmission sleeve and the inner second annular groove of the brake disc connecting hub sleeve, an outer bearing is arranged between a fourth cylinder of the transmission sleeve and an outer annular groove of the brake disc connecting hub sleeve, an outer thread is arranged at the tail end of the fourth cylinder of the transmission sleeve, a lock nut is attached to the outer bearing through the outer thread, two ends of the hub component are supported on a connecting flange and a supporting ring of the brake disc connecting hub sleeve, a brake caliper component and a brake disc of the brake disc connecting hub sleeve are positioned in a cavity formed by the inner side of the hub component and the outer side of a vehicle body, the brake disc is positioned in the brake caliper component, the semi-axle body is of a cylindrical structure, the outer end of the semi-axle body is a semi-axle flange disc, a circle of six connecting through holes which are uniformly distributed along the circumferential direction are arranged on the semi-axle flange disc, an outer spline is arranged at the inner end of the semi-axle, the semi-axis passes the hollow cylinder of drive sleeve, stretches into inside the automobile body, and the semi-axis flange dish links to each other with brake disc connection hub sleeve flange lateral surface, and decelerator inner is equipped with the input internal spline, and the outer end is equipped with the output external spline, and the driving motor outer end is equipped with the output internal key, and the inner external spline of semi-axis cooperatees with decelerator output external spline, and decelerator input internal spline cooperatees with driving motor output external spline, semi-axis, decelerator and driving motor's internal spline and external spline are coaxial, and decelerator and driving motor link firmly with the automobile body mutually.
Compared with the prior art, the invention has the remarkable advantages that:
1. compared with the traditional crawler transmission device, the invention adopts a distributed electric driving technology, reduces the volume and weight occupied by a transmission system and improves the transmission efficiency; particularly, the transmission shafts penetrating through the front carriage and the rear carriage are omitted, the design difficulty of the transmission device is reduced, and the space for optimizing the design of the chassis is also increased.
2. The reducer is coaxially arranged with the driving motor and matched with the driving motor, planetary gear trains with different transmission ratios can be arranged in the reducer, and the arrangement flexibility of a transmission system is improved, so that the requirements of different driving conditions and the requirements of power performance are met.
3. The invention adopts the design idea of separating the structure and the stress on the complex stress condition transmitted to the driving wheel by the road surface, the transmission sleeve is connected with the inside and the outside of the vehicle body in a rigid cantilever manner, the bending moment and other acting forces caused by the road surface impact are borne by the transmission sleeve at the outer side of the vehicle body, the driving torque is borne by the half shaft, and the supporting seat and other structures are arranged in the vehicle body to provide supporting counter force for the transmission sleeve.
4. The structural design of the brake disc connecting hub sleeve provides a novel integrated multifunctional structure, and the functions of the connecting flange disc, the supporting ring and the brake disc can be respectively realized.
5. In the invention, the arrangement of the brake utilizes the cavity between the hub and the vehicle body, and the structure is compact and reasonable in arrangement and convenient to maintain and repair.
Drawings
FIG. 1 is an overall schematic of a distributed independent electric drive transmission for a lightweight high-speed crawler of the present invention.
Detailed Description
The distributed independent electrically driven wheel transmission device for the light tracked vehicle solves the problem that the arrangement scheme of the wheel transmission device of the light tracked vehicle at present and the guarantee of the running stability and the dynamic property of the whole vehicle under different road conditions. The present invention is described in further detail below with reference to the accompanying drawings, and is directed to a distributed independent electric drive vehicle transmission for a lightweight high-speed crawler, the construction of which is shown in fig. 1.
With reference to fig. 1, the wheel transmission device of the light tracked vehicle comprises a driving motor (10), a speed reducer (9), a half shaft (16), a transmission sleeve (11), a brake disc connecting hub sleeve (3), a brake caliper assembly 4, a vehicle body (7), a transmission sleeve supporting seat (8), a sealing piece (12), a lock nut (15), an outer bearing (14), an inner bearing (13) and a hub assembly, wherein the transmission sleeve (11), the brake disc connecting hub sleeve (3), the brake caliper assembly 4, the sealing piece (12), the lock nut (15), the outer bearing (14), the inner bearing (13), the hub assembly and the half shaft (16) are positioned outside the vehicle body (7), the driving motor (10), the speed reducer (9) and the transmission sleeve supporting seat (8) are positioned in the vehicle body (7), the transmission sleeve (11) body is hollow cylindrical, a flange is arranged on the hollow cylinder, which deviates from the inner end surface to the outer end surface by a certain distance, the hollow cylinder passes through a transmission sleeve mounting hole of the vehicle body (7) to be embedded into the vehicle body (7), the inner side surface of the flange is attached to the outer side surface of the vehicle body (7), the transmission sleeve supporting seat (8) is arranged on the inner side of the vehicle body (7), the transmission sleeve supporting seat (8) body is hollow cylinder, reinforcing ribs are arranged on the outer side of the transmission sleeve supporting seat (8) and fixedly connected with the vehicle body (7), the hollow cylinder of the transmission sleeve supporting seat (8) is coaxial with the transmission sleeve (11), the inner diameter of the hollow cylinder of the transmission sleeve supporting seat (8) is attached to the outer diameter of the hollow cylinder at the inner side of the transmission sleeve (11), three steps are arranged on the outer side surface of the hollow cylinder at the outer side surface part of the flange of the transmission sleeve (11), the radius of the steps is sequentially reduced from inside to outside, so that the steps are sequentially a first cylinder, a second cylinder, a third cylinder and a fourth cylinder, the brake disc is connected with the hub sleeve (3) body to form a hollow cylinder, 2 layers of annular grooves concentric with the hollow cylinder are arranged on the inner wall of the hollow cylinder of the brake disc connection hub sleeve (3), the annular grooves are respectively an inner first annular groove and an inner second outer annular groove, the outer wall of the hollow cylinder of the brake disc connection hub sleeve (3) is provided with an outer annular groove concentric with the hollow cylinder, the outer side surface of the hollow cylinder of the brake disc connecting hub sleeve (3) is respectively provided with annular bosses at the inner end surface, the outer end surface and the middle, which are respectively called a brake disc, a connecting flange plate and a supporting ring, a sealing piece (12) is arranged between the second cylinder of the transmission sleeve (11) and an inner first annular groove of the brake disc connecting hub sleeve (3), an inner bearing (13) is arranged between the third cylinder of the transmission sleeve (11) and an inner second annular groove of the brake disc connecting hub sleeve (3), an outer bearing (14) is arranged between the fourth cylinder of the transmission sleeve (11) and an outer annular groove of the brake disc connecting hub sleeve (3), the tail end of the fourth cylinder of the transmission sleeve (11) is provided with external threads, the locking nut (15) is attached to the outer bearing (14) through external threads, two ends of the hub component are supported on a connecting flange and a supporting ring of the brake disc connecting hub sleeve (3), the brake disc of the brake caliper component 4 and the brake disc connecting hub sleeve (3) is positioned in a cavity formed by the inner side of the hub component and the outer side of the vehicle body (7), the brake disc is positioned in the brake caliper component 4, the body of the half shaft (16) is of a cylindrical structure, the outer end is a half shaft flange disc, a circle of six connecting through holes uniformly distributed along the circumferential direction are formed in the half shaft flange disc, external splines are arranged at the inner ends of the half shafts (16), a gap is reserved between the half shafts (16) and the hollow cylinder of the transmission sleeve (11), and pass transmission cover (11), stretch into inside automobile body (7), the hub sleeve (3) is connected with the brake disc and is connected the flange lateral surface, the inner of decelerator (9) is equipped with the input internal spline, the outer end is equipped with the output external spline, driving motor (10) outer end is equipped with the output internal key, the inner external spline of semi-axis (16) cooperatees with the external spline of decelerator (9) output, the internal spline of decelerator (9) input cooperatees with driving motor (10) output external spline, the internal spline and the external spline of semi-axis (16), decelerator (9) and driving motor (10) are coaxial, decelerator (9) and driving motor (10) link firmly with automobile body (7).
The outer terminal surface of automobile body (7) is laminated with driving sleeve (11) ring flange mutually and is equipped with the same circular recess of diameter and ring flange, circular recess surface is equipped with six connecting screw holes of round along circumference evenly distributed, circular recess degree of depth is less than automobile body (7) thickness, its location that is used for driving sleeve (11) when installing with automobile body (7), driving sleeve (11) inner pass the automobile body and with driving sleeve supporting seat (8) cooperation installation of automobile body terminal surface, driving sleeve supporting seat (8) link firmly in automobile body inner wall, and be equipped with the strengthening rib on driving sleeve supporting seat (8), driving sleeve supporting seat (8) provide the support counter force for driving sleeve (11), increase the reliability of traveling of tracked vehicle.
Six connecting through holes which are uniformly distributed along the circumferential direction and matched with threaded connecting holes on the surface of a circular groove on the outer end face of the vehicle body (7) are formed in a flange plate at the inner end of the transmission sleeve (11), transition surfaces are arranged between a first cylinder and a second cylinder, between a second cylinder and a third cylinder and between a third cylinder and a fourth cylinder of the transmission sleeve (11), and are respectively a first transition surface, a second transition surface and a third transition surface, wherein a first shaft shoulder is formed at the intersection of the first transition surface and the second cylinder, a first shaft shoulder is used for positioning and mounting of a sealing element (12), a second shaft shoulder is formed at the intersection of the second transition surface and the third cylinder, a third shaft shoulder is formed at the intersection of the third transition surface and the fourth cylinder, a gap is reserved between the inner end face of an inner ring of an outer bearing (14) and the third shaft shoulder, and the purpose of the gap is adjustment of locking and positioning of a locking nut (15).
The hub assembly comprises a hub (2) and a gear ring (1), wherein the hub (2) body is of a cylindrical hollow structure concentric with a half shaft (16), the outer end of the inner wall of the hub is provided with a hub connecting flange, the outer end face of the hub connecting flange is aligned with the outer end face of the hub (2), the inner end face of the hub connecting flange is attached to the outer end face of the connecting flange of a brake disc connecting hub sleeve (3), the inner end of the inner wall of the hub (2) is provided with a hub first annular groove, the outer wall of the hub (2) is provided with a rim, and a pair of gear rings (1) are fixedly mounted on the inner end face and the outer end face of the rim. The hub (2) is provided with six connecting through holes uniformly distributed along the circumferential direction, the width of a first annular groove of the hub (2) is consistent with the thickness of a supporting ring of a brake disc connecting hub sleeve (3), the middle part of the hub (2) is provided with a guide disc, the inner end face and the outer end face of the rim are respectively provided with six connecting threaded holes uniformly distributed along the circumferential direction, the gear ring (1) is of a hollow disc structure, the two end faces of the gear ring (1) are respectively provided with six connecting through holes uniformly distributed along the circumferential direction and matched with the connecting threaded holes at the rim, and 12 teeth are arranged on the outer side of the gear ring (1) and are uniformly distributed in an annular shape for transmitting crawler driving force.
The outer end face of the connecting flange of the brake disc connecting hub sleeve (3) is provided with two circles of concentric connecting threaded holes with different radiuses and six connecting threaded holes uniformly distributed along the circumferential direction, wherein the radius is small as a first connecting threaded hole, the radius is large as a second connecting threaded hole, the first connecting threaded hole is matched with a connecting through hole on a half shaft flange plate of the half shaft (16), is used for installing the half shaft (16) and the brake disc connecting hub sleeve (3), the second connecting threaded hole is matched with the connecting through hole on the flange plate of the hub (2), the device is used for installing the hub (2) and the brake disc connecting hub sleeve (3), the supporting ring of the brake disc connecting hub sleeve (3) is matched with the first annular groove at the inner end of the hub (2), the functions of positioning and supporting the weight of the hub part are achieved, a first step is formed at the intersection of the inner first annular groove and the inner second outer annular groove at the inner wall of the inner end of the brake disc connecting hub sleeve (3), for positioning the seal (12), the intersection of the inner second outer annular groove and the inner wall forming a second step, for positioning the inner bearing (13), a third step is formed at the intersection of the outer annular groove and the inner wall, the depth of the inner first annular groove of the brake disc connecting hub sleeve (3) is the width of the sealing piece (12), the outer end faces of the inner first annular groove are aligned, the bottom of the inner second annular groove is aligned with the outer end face of the outer ring of the inner bearing (13), and the inner end face of the outer ring of the outer bearing (14) is aligned with the bottom of the outer annular groove.
The installation and positioning of the half shaft (16) are matched with the output external spline of the speed reducer (9) by virtue of the external spline at the inner end of the half shaft, the half shaft flange at the outer end of the half shaft (16) and the connecting flange plate of the brake disc connecting hub sleeve (3) are fixedly connected through bolts, and the installation of the half shaft (16), the transmission sleeve (11), the driving motor (8) and the speed reducer (7) are all positioned on the same axis.
In summary, the invention adopts the distributed independent electric driving device for the light high-speed tracked vehicle, improves the arrangement flexibility of the transmission system, has a more compact structure, reduces the volume weight occupied by the transmission system, particularly eliminates the transmission shaft penetrating through the front carriage and the rear carriage, reduces the design difficulty of the transmission device, and also improves the space for optimizing the design of the chassis; according to the invention, the inner end of the transmission sleeve (11) is connected with the outer wall of the vehicle body (7) through bolts, meanwhile, the inner end of the transmission sleeve (11) penetrates through the vehicle body (7) and is matched and installed with the transmission sleeve supporting seat (8) on the inner end surface of the vehicle body (7), the transmission sleeve supporting seat (8) is fixedly connected with the inner wall of the vehicle body (7), and the transmission sleeve supporting seat (8) is provided with reinforcing ribs, so that the safety and the reliability of the whole wheel transmission device during high-speed running of the vehicle are guaranteed; the transmission sleeve (11) is provided with a pair of tapered roller bearings which are used for supporting the brake disc to connect the hub sleeve (3) for rotation, the half shaft (16) and the hub (2) are connected to the flange plate at the outer end of the brake disc to connect the hub sleeve (3) through bolts, the purpose of the design is that in the high-speed running process of the tracked vehicle, the impact on the ground of various complex road conditions is completely borne by the transmission sleeve (11), the half shaft (16) only bears the torque from the driving motor (10) in theory at the moment, namely the transmission sleeve (11) is responsible for bearing the bending moment, the half shaft (16) only bears the torque, and the design concept of stress decomposition of the structure is adopted, so that the use reliability of the half shaft is increased, and the running safety of the tracked vehicle in the high-speed running process is ensured; the wheel hub (2) of the wheel driving device adopts a hollow structure, the weight of the tracked vehicle is reduced under the condition of meeting the structural strength of the wheel hub, and the rim is in a bell mouth opening shape, so that the space utilization rate between the inner side of the driving wheel and the vehicle body (7) is increased, and the arrangement and maintenance of the brake caliper assembly are convenient.
Claims (5)
1. A distributed independent electrically driven light track vehicle wheel drive, characterized by: comprises a driving motor, a speed reducing device, a half shaft, a transmission sleeve, a brake disc connecting hub sleeve, a brake caliper assembly, a vehicle body, a transmission sleeve supporting seat, a sealing element, a lock nut, an outer bearing, an inner bearing and a hub assembly, wherein the transmission sleeve, the brake disc connecting hub sleeve, the brake caliper assembly, the sealing element, the lock nut, the outer bearing, the inner bearing, the hub assembly and the half shaft are positioned outside the vehicle body, the driving motor, the speed reducing device and the transmission sleeve supporting seat are positioned inside the vehicle body, the transmission sleeve body is in a hollow cylinder shape, a flange disc is arranged on the inner end surface of the hollow cylinder, the hollow cylinder penetrates through a transmission sleeve mounting hole of the vehicle body to be embedded inside the vehicle body, the inner side surface of the flange disc is attached to the outer side surface of the vehicle body, the transmission sleeve supporting seat is arranged on the inner side of the vehicle body, a hollow cylinder is provided with a reinforcing rib on the outer side, the reinforcing rib is fixedly connected with the vehicle body, the hollow cylinder of the transmission sleeve supporting seat is coaxial with the transmission sleeve, the inner diameter of the hollow cylinder of the transmission sleeve supporting seat is attached to the outer diameter of the inner hollow cylinder of the transmission sleeve, three steps are arranged on the outer side surface of the hollow cylinder at the outer side surface part of the transmission sleeve flange, the radius of the steps is sequentially reduced from inside to outside, and therefore the transmission sleeve supporting seat is sequentially a first cylinder, a second cylinder, a third cylinder and a fourth cylinder, a brake disc connecting hub sleeve body is a hollow cylinder, 2 layers of annular grooves concentric with the hollow cylinder are arranged on the inner wall of the inner end of the brake disc connecting hub sleeve hollow cylinder, an inner first annular groove and an inner second outer annular groove are respectively arranged on the inner wall of the outer end of the brake disc connecting hub sleeve hollow cylinder, an outer annular groove concentric with the hollow cylinder is arranged on the outer side surface of the brake disc connecting hub sleeve hollow cylinder, an inner end surface, an outer end surface and the middle of the brake disc connecting hub sleeve hollow cylinder are respectively provided with annular bosses which are respectively called brake discs, the connecting flange plate and the supporting ring are provided with sealing elements between the second cylinder of the transmission sleeve and the inner first annular groove of the brake disc connecting hub sleeve, an inner bearing is arranged between the third cylinder of the transmission sleeve and the inner second annular groove of the brake disc connecting hub sleeve, an outer bearing is arranged between the fourth cylinder of the transmission sleeve and the outer annular groove of the brake disc connecting hub sleeve, the tail end of the fourth cylinder of the transmission sleeve is provided with external threads, the locking nuts are attached to the external bearings through the external threads, the two ends of the hub assembly are supported on the connecting flange and the supporting ring of the brake disc connecting hub sleeve, the brake caliper assembly and the brake disc of the brake disc connecting hub sleeve are positioned in a cavity formed between the inner side of the hub assembly and the outer side of a vehicle body, the brake disc is positioned in the brake caliper assembly, the half shaft body is of a cylindrical structure, the outer end of the half shaft body is a half shaft flange disc, an outer spline is arranged at the inner end of the half shaft body, the half shaft penetrates through a hollow cylinder of the transmission sleeve and stretches into the vehicle body, the half shaft flange disc is connected with the outer side surface of a connecting flange of the brake disc connecting hub sleeve, an input inner spline is arranged at the inner end of the speed reducer, an output outer spline is arranged at the outer end of the speed reducer, an output inner spline is arranged at the outer end of the driving motor, the outer spline at the inner end of the half shaft is matched with the output outer spline of the speed reducer, the input inner spline of the speed reducer is matched with the output outer spline of the driving motor, the inner spline of the half shaft, the speed reducer and the outer spline of the driving motor are coaxial, and the speed reducer and the driving motor are fixedly connected with the vehicle body; the brake disc is used for the matched installation of the brake;
the flange plate at the inner end of the transmission sleeve is connected with the outer end surface of the vehicle body through bolts, a circular groove with the same diameter as the flange plate is arranged at the joint of the outer end surface of the vehicle body and the transmission sleeve, and the depth of the circular groove is smaller than the thickness of the vehicle body and is used for positioning when the transmission sleeve is installed with the vehicle body; the inner end of the transmission sleeve penetrates through the vehicle body and is matched with a transmission sleeve supporting seat on the inner end surface of the vehicle body, the transmission sleeve supporting seat is fixedly connected to the inner wall of the vehicle body, reinforcing ribs are arranged on the transmission sleeve supporting seat, and the transmission sleeve supporting seat provides supporting counterforce for the transmission sleeve;
Transition surfaces are respectively arranged between the first cylinder and the second cylinder, between the second cylinder and the third cylinder and between the third cylinder and the fourth cylinder of the transmission sleeve, and are respectively a first transition surface, a second transition surface and a third transition surface, wherein a first shaft shoulder is formed at the intersection of the first transition surface and the second cylinder and used for positioning and mounting a sealing element, a second shaft shoulder is formed at the intersection of the second transition surface and the third cylinder and used for positioning and mounting an inner bearing, a third shaft shoulder is formed at the intersection of the third transition surface and the fourth cylinder and used for positioning and mounting an inner ring of an outer bearing, and a gap is reserved between the inner end surface of the inner ring of the outer bearing and the third shaft shoulder and used for adjusting locking and positioning of a locking nut;
The transmission sleeve is rigidly connected inside and outside the vehicle body in a suspending way, bending moment and other acting forces caused by road surface impact are borne by the transmission sleeve, a gap is reserved between the half shaft and the transmission sleeve, the half shaft only bears driving torque, and meanwhile, a transmission sleeve supporting seat in the vehicle body provides supporting counterforce for the transmission sleeve;
The hub assembly comprises a hub and a gear ring, wherein the hub body is of a cylindrical hollow structure concentric with the half shaft, the outer end of the inner wall of the hub body is provided with a hub connecting flange, the outer end face of the hub connecting flange is aligned with the outer end face of the hub, the inner end face of the hub connecting flange is attached to the outer end face of the connecting flange of the brake disc connecting hub sleeve, the inner end of the inner wall of the hub is provided with a first annular groove of the hub, the outer wall of the hub is provided with a rim, a pair of gear rings are fixedly arranged in the rim and the outer end face, the width of the first annular groove of the hub is consistent with the thickness of a supporting ring of the brake disc connecting hub sleeve, the middle part of the hub is provided with a guide disc, the gear ring is of a hollowed disc structure, and the gear ring is used for transmitting crawler driving force.
2. A distributed independently electrically driven light tracked vehicle wheel transmission according to claim 1, wherein: the outer terminal surface of the flange of hub is connected to the brake disc is equipped with two rings of connecting screw holes, wherein the radius is little for first connecting screw hole, the radius is big for the second connecting screw hole, wherein the connecting hole on the semi-axis flange dish of first connecting screw hole and semi-axis cooperatees, be used for semi-axis and the installation of hub is connected to the brake disc, the connecting hole on the flange dish of second connecting screw hole and wheel hub cooperatees, be used for the installation of hub is connected to wheel hub and brake disc, the support ring of hub is connected to the brake disc and the first annular groove cooperation installation of wheel hub inner, play the effect of location and support hub part weight, the inner first annular groove of the inner wall of hub is connected to the brake disc and the outer annular groove intersection department of inner second forms first ladder for the location sealing member, the outer annular groove and the crossing department of inner wall forms the third ladder for the location outer bearing, the degree of depth of the inner first annular groove of brake disc connection hub is the width of sealing member, the outer terminal surface of inner first annular groove is in line with the bottom of the inner annular groove and the outer end surface of the inner annular groove is in line with the outer ring of the inner bearing.
3. A distributed independently electrically driven light tracked vehicle wheel transmission according to claim 2, wherein: the three functional structures on the brake disc connection hub sleeve are respectively a connection flange disc, a support ring and a brake disc, wherein the connection flange disc is used for mounting connection of a hub and positioning mounting of a half shaft, and the support ring is used for bearing the weight of part of the hub.
4. A distributed independently electrically driven light tracked vehicle wheel transmission according to claim 1, wherein: the brake mounting is disposed in a cavity formed by the hub and the body.
5. A distributed independently electrically driven light tracked vehicle wheel transmission according to claim 1, wherein: the half shaft, the driving motor and the speed reducing device are all positioned on the same axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910855374.4A CN110539812B (en) | 2019-09-06 | 2019-09-06 | Distributed independent electrically driven wheel transmission device for light tracked vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910855374.4A CN110539812B (en) | 2019-09-06 | 2019-09-06 | Distributed independent electrically driven wheel transmission device for light tracked vehicle |
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| CN110539812A CN110539812A (en) | 2019-12-06 |
| CN110539812B true CN110539812B (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910855374.4A Active CN110539812B (en) | 2019-09-06 | 2019-09-06 | Distributed independent electrically driven wheel transmission device for light tracked vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111055673B (en) * | 2019-12-30 | 2021-02-19 | 北京晶品特装科技股份有限公司 | Lightweight driving device for robot platform |
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| CN110539812A (en) | 2019-12-06 |
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