CN111917166B - Power supply device of shaft end signal acquisition device - Google Patents

Power supply device of shaft end signal acquisition device Download PDF

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Publication number
CN111917166B
CN111917166B CN202010713452.XA CN202010713452A CN111917166B CN 111917166 B CN111917166 B CN 111917166B CN 202010713452 A CN202010713452 A CN 202010713452A CN 111917166 B CN111917166 B CN 111917166B
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signal acquisition
pole rotor
shaft end
magnetic pole
shaft
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CN111917166A (en
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李海骄
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Dongfeng Commercial Vehicle Co Ltd
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Dongfeng Commercial Vehicle Co Ltd
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/14Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
    • H02J7/1438Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle in combination with power supplies for loads other than batteries
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/03Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K7/00Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807Rotary generators
    • H02K7/1861Rotary generators driven by animals or vehicles

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The application relates to a power supply unit of axle end signal pickup assembly relates to transmission variable speed traveling system technical field, contains: the shaft end fixing bracket is fixed at the side end of the vehicle half shaft; the planetary wheel mechanism is rotatably arranged on the shaft end fixing support, and the central shaft of the planetary wheel mechanism is coaxial with the vehicle half shaft; the generator set comprises a magnetic pole rotor and a coil stator, wherein the coil stator is coaxially arranged in the magnetic pole rotor; the magnetic pole rotor and the coil stator are used for rotating asynchronously under the action of the planetary wheel mechanism; and the battery box is electrically connected with the generator set, and after alternating current generated by asynchronous rotation of the magnetic pole rotor and the coil stator is rectified and stabilized, the battery box charges a rechargeable battery in the battery box and supplies power for the signal acquisition device. This application can change the mechanical energy of axle head into the electric energy, charges the battery of signal acquisition equipment, has solved the technical problem that signal acquisition equipment needs often to change the battery.

Description

Power supply device of shaft end signal acquisition device
Technical Field
The application relates to the technical field of transmission variable-speed traveling systems, in particular to a power supply device of a shaft end signal acquisition device.
Background
At present, under the environment without a direct fixed bracket at the wheel end of a vehicle, other free rotating shaft ends and the like, wireless telemetering equipment is generally adopted as signal acquisition equipment of torque, rotating speed, signals, stress, strain, temperature and the like. The wireless remote measuring equipment consists of a battery box 1, a signal acquisition and transmission module 2 and a mounting bracket 1A (see figure 1); wherein, battery case 1 supplies power for signal acquisition emission module 2.
A 9V dry battery (6LR61) or a 650mAh rechargeable lithium battery is arranged in the battery box 1; wherein, the normal service cycle of the dry battery power supply is 4 h/block, and the corresponding travel of the vehicle is about 300 km; the single use period of the rechargeable lithium battery is 3h, and the more the number of times of cycle charging is, the shorter the single use period is.
However, no matter the dry battery or the rechargeable lithium battery is used, the battery needs to be stopped and replaced when the electric quantity is low, so that the driving mileage of continuous sampling is greatly limited; when the vehicle is parked and the single-group power supply battery needs to be replaced, the dismounting time is 5-10 minutes (including external waterproof packaging), namely 4 hours of driving is realized, for example, a 6-4 tractor is taken as an example, 6 groups of signal acquisition and transmission modules need to be parked for half an hour to 1 hour for replacing the battery, and the time cost is high; meanwhile, when the battery is replaced, the battery needs to be replaced in a safe area, and when the vehicle runs, the vehicle cannot stop in high-speed, three-high and other road sections, so that great inconvenience is caused to sampling, and potential safety hazards exist.
Disclosure of Invention
The embodiment of the application provides a power supply unit of axle head signal acquisition device, can change the mechanical energy of axle head into the electric energy, charges the battery of signal acquisition equipment, has solved the technical problem that signal acquisition equipment needs often to change the battery.
The application provides a shaft end signal acquisition device's power supply unit contains:
the shaft end fixing bracket is fixed at the side end of the vehicle half shaft;
the planetary wheel mechanism is rotatably arranged on the shaft end fixing support, and the central shaft of the planetary wheel mechanism is coaxial with the vehicle half shaft;
the generator set comprises a magnetic pole rotor and a coil stator, wherein the coil stator is coaxially arranged in the magnetic pole rotor; the magnetic pole rotor and the coil stator are used for rotating asynchronously under the action of the planetary wheel mechanism;
and the battery box is electrically connected with the generator set, and after alternating current generated by asynchronous rotation of the magnetic pole rotor and the coil stator is rectified and stabilized, the battery box charges a rechargeable battery in the battery box and supplies power for the signal acquisition device.
In some embodiments, the planetary gear mechanism comprises a sun gear, a ring gear, a circular planet carrier, and three planet gears;
the planet carrier is fixed on the shaft end fixing support, the planet gears and the sun gear are rotatably mounted on the planet carrier through mounting shafts, the gear ring is sleeved outside the planet carrier and the three planet gears, the planet carrier freely rotates on the gear ring, the planet gears are meshed with the gear ring, and the gear ring keeps static; the sun gear and the magnetic pole rotor or the coil stator rotate synchronously.
In some embodiments, the inner wall of the gear ring is divided into two annular parts, the annular part adjacent to the shaft end fixing bracket is a smooth surface, and the other annular part is provided with gear teeth; the three planet wheels are meshed with an annular part provided with gear teeth, and the planet carrier is rotatably connected in the annular part with the smooth surface through a first bearing.
In some embodiments, the sun gear is coaxially fixed to the pole rotor, and the sun gear has a smaller diameter than the pole rotor.
In some embodiments, the vehicle half-shaft speed is n when the vehicle is running1(ii) a The lifting speed ratio of the planet wheel mechanism is k; the rotating speed of the magnetic pole rotor is n2(ii) a The rotation speed of the gear ring is 0, and the relative rotation speed delta n between the coil stator and the magnetic pole rotor is (k-1) multiplied by n1
In some embodiments, a gravity pendulum is fixedly arranged at the bottom of the gear ring, and the gravity pendulum is always in a plumb state.
In some embodiments, the planet carrier is provided with a central shaft and three planet shafts, the central shaft is divided into two sections, one section of the central shaft close to the planet carrier is provided with the sun gear through a third bearing, and the other section of the central shaft far from the planet carrier is fixedly connected with the coil stator; the three planet wheels are respectively sleeved on the three planet shafts through second bearings.
In some embodiments, the power supply device further includes a protective housing in a cap shape, the protective housing covers the generator set and the planetary gear mechanism, and the protective housing is fixed to the gear ring side end face.
In some embodiments, the battery box includes a rechargeable battery and a rectification and voltage-stabilizing circuit, the rectification and voltage-stabilizing circuit is respectively connected with the generator set and the rechargeable battery, the rechargeable battery is connected with a signal acquisition and emission module in the signal acquisition device, and the battery box and the signal acquisition and emission module have the same volume.
In some embodiments, the shaft end fixing bracket comprises a round mounting chassis and four bent mounting legs, and the mounting legs are connected to the side end face of the vehicle half shaft through screws.
The beneficial effect that technical scheme that this application provided brought includes:
the embodiment of the application provides a power supply device of a shaft end signal acquisition device, the power supply device is fixed at the side end of a vehicle half shaft through a shaft end fixing support, the power supply device mainly comprises a generator set and a planet wheel mechanism, the generator set comprises a magnetic pole rotor and a coil stator, when a vehicle runs, the magnetic pole rotor and the coil stator rotate asynchronously under the action of the planet wheel mechanism, the coil stator cuts a magnetic induction line to generate alternating current, and the alternating current is rectified and stabilized to supply a rechargeable battery in a battery box; the power supply device converts the mechanical energy of the shaft end into electric energy, charges the battery of the wireless remote measuring equipment, solves the technical problem that the battery needs to be frequently replaced by signal acquisition equipment, greatly improves the running mileage of continuous sampling, can meet the power supply requirements of acquisition of signals such as torque, rotating speed, signals, stress, strain and temperature, and is wide in application range and strong in practicability.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art wireless telemetry device.
Fig. 2 is an exploded view of a power supply device according to an embodiment of the present application.
Fig. 3 is an operation schematic diagram of a power supply device according to an embodiment of the present application.
Reference numerals: 1. a battery case; 2. a signal acquisition and transmission module; 1A, mounting a bracket; 3. a shaft end fixing bracket; 31. installing a chassis; 32. mounting a foot; 4. a first bearing; 51. a ring gear; 52. a gravity pendulum bob; 6. a planet carrier; 7. a second bearing; 8. a third bearing; 9. a magnetic pole rotor; 10. a coil stator; 11. a planet wheel; 12. a protective housing; 13. a waterproof housing; 91. a sun gear; 92. a magnetic pole rotor; 100. a generator set; 200. a planetary wheel mechanism.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
As shown in fig. 2, the present application discloses an embodiment of a power supply device for a shaft end signal acquisition device, which is used for supplying power to the signal acquisition device installed at a shaft end, and comprises a shaft end fixing support 3, a planetary wheel mechanism 200, a generator set 100 and a battery box 1. The shaft end fixing bracket 3 is fixed at the side end of the vehicle half shaft; when the vehicle runs, the vehicle half shaft rotates, and the shaft end fixing bracket 3 rotates along with the rotation of the vehicle half shaft.
The planetary gear mechanism 200 is rotatably mounted on the shaft end fixing bracket 3, and the central shaft of the planetary gear mechanism 200 is coaxial with the vehicle half shaft. The generator set 100 comprises a magnetic pole rotor 9 and a coil stator 10, wherein the coil stator 10 is coaxially arranged in the magnetic pole rotor 9; the magnetic pole rotor 9 and the coil stator 10 can rotate, and the magnetic pole rotor 9 and the coil stator 10 are used for rotating asynchronously under the action of the planetary wheel mechanism 200, so that the coil stator 10 cuts magnetic induction lines to generate electricity. The planet wheel functions to accelerate or decelerate either one of the magnetic pole rotor 9 and the coil stator 10 so that the speeds of the two are no longer synchronous.
The battery box 1 is electrically connected with the generator set 100, when the magnetic pole rotor 9 and the coil stator 10 rotate asynchronously, alternating current is generated, the alternating current charges a rechargeable battery in the battery box 1 after being rectified and stabilized, and the rechargeable battery supplies power for the signal acquisition device.
The signal acquisition device can be a device for acquiring signals such as torque, rotating speed, signals, stress, strain, temperature and the like in the environment without a direct fixed support, such as a vehicle wheel end, other free rotating shaft ends and the like.
In the present embodiment, the planetary gear mechanism 200 includes a sun gear 91, a ring gear 51, a circular carrier 6, and three planet gears 11. The planet carrier 6 is fixed on the shaft end fixing support 3, and when the shaft end fixing support 3 rotates along with the half shaft, the planet carrier 6 also rotates together.
The planet wheel 11 and the sun wheel 91 are rotatably mounted on the planet carrier 6 through a mounting shaft, i.e. the sun wheel 91 and the three planet wheels 11 can both rotate, and the sun wheel 91 and the three planet wheels 11 are both mounted on the planet carrier 6.
The gear ring 51 is sleeved outside the planet carrier 6 and the three planet wheels 11, the planet carrier 6 freely rotates on the gear ring 51, the planet wheels 11 are meshed with the gear ring 51, and the gear ring 51 is kept static. When the vehicle is running, the half shaft drives the shaft end fixing bracket 3 and the planet carrier 6 to rotate, while the gear ring 51 is kept static, so that the sun gear 91 is accelerated, and the sun gear 91 and the magnetic pole rotor 9 or the coil stator 10 synchronously rotate, so that the rotating speeds of the magnetic pole rotor 9 and the coil stator 10 are differentiated. The invention realizes power generation by differentiating the rotating speeds of the magnetic pole rotor 9 and the coil stator 10 by utilizing the planetary wheel mechanism 200, and has smart design and compact structure.
In the present embodiment, the sun gear 91 is coaxially fixed to the pole rotor 9, and the sun gear 91 has a smaller diameter than the pole rotor 9. The sun gear 91 and the magnetic pole rotor 9 rotate synchronously, and the rotational speed of the magnetic pole rotor 9 is greater than that of the coil stator 10.
In other embodiments, the sun gear 91 may also be fixed with the coil stator 10, and the diameter of the sun gear 91 may also be larger than the diameter of the magnetic pole rotor 9 or the coil stator 10.
Further, the inner wall of the ring gear 51 is divided into two annular parts, the annular part adjacent to the shaft end fixing bracket 3 is a smooth surface, and the other annular part is provided with gear teeth; the three planet wheels 11 are in mesh with an annular part provided with gear teeth, and the planet carrier 6 is rotatably connected in the annular part of the smooth surface by means of the first bearing 4.
Corresponding to two annular parts of ring gear 51 inner wall, can make planet carrier 6 free rotation in ring gear 51, can make three planet wheel 11 rotate at ring gear 51 inner gearing again, for magnetic pole rotor 9 and coil stator 10 differentiation rotate provide the structural basis, the design is novel, design benefit for power supply unit overall structure is compacter, and the suitability is strong.
As shown in fig. 3, in the present embodiment, when the power supply device is actually used, the vehicle runs while the vehicle is runningHalf-axis rotation speed of n1(ii) a The speed ratio of the planetary wheel mechanism 200 is k; the magnetic pole rotor 9 has a rotational speed n2(ii) a The number of revolutions of the ring gear 51 is 0, and the relative rotational speed Δ n between the coil stator 10 and the pole rotor 9 is (k-1) × n1The relative rotational speed provides the basis for the generation of alternating current.
Further, a gravity pendulum 52 is fixedly arranged at the bottom of the gear ring 51, and the gravity pendulum 52 provides a large gravity and is always in a vertical state, so that the gear ring 51 is kept static.
Specifically, the planet carrier 6 is provided with a central shaft and three planet shafts, the central shaft is divided into two sections, one section of the central shaft, which is close to the planet carrier 6, is provided with a sun gear 91 through a third bearing 8, and the other section of the central shaft, which is far away from the planet carrier 6, is fixedly connected with the coil stator 10; the three planet wheels 11 are respectively sleeved on the three planet shafts through the second bearings 7. The central shaft and the three planetary shafts make the planetary gear mechanism 200 with a horizontal axis more stable and firm. Preferably, the section remote from the planet carrier 6 is keyed with the coil stator 10.
Specifically, all the axial centers of the vehicle half shaft, the circular mounting chassis 31, the ring gear 51, the carrier 6, the sun gear 91, the pole rotor 9, and the coil stator 10 are coaxial.
A coil stator 10 and a sun gear 91 provided with a third bearing 8 are sleeved on the central shaft, and the coil stator 10 rotates along with the rotation of the planet carrier 6; with regard to the magnetic pole rotor 9, the planet carrier 6 drives the planet gear 11 to rotate along the gear ring 51, the planet gear 11 drives the sun gear 91 to rotate, and the sun gear 91 drives the magnetic pole rotor 9; the connection and transmission between the coil stator 10 and the magnetic pole rotor 9 of the power supply device are ingenious in design, and the rotation speed differentiation of the coil stator 10 and the magnetic pole rotor 9 is realized by the simplest structure.
Preferably, the power supply device further includes a shield case 12 having a cap shape, the shield case 12 covers the generator set 100 and the planetary gear mechanism 200, and the shield case 12 is fixed to a side end surface of the ring gear 51. The protective housing 12 is used for water and dust proofing, so that the power supply device is more durable.
Further, the power supply device includes a rectifying and voltage-stabilizing circuit for rectifying and stabilizing the alternating current generated by the asynchronous rotation of the magnetic pole rotor 9 and the coil stator 10 into a stable direct current, and then charging the rechargeable battery in the battery box 1.
In this embodiment, the battery box 1 includes a rechargeable battery and a rectification and voltage-stabilizing circuit inside, the rectification and voltage-stabilizing circuit is connected with the generating set 100 and the rechargeable battery respectively, the alternating current generated by the generating set 100 becomes stable direct current after passing through the rectification and voltage-stabilizing circuit, then the rechargeable battery in the battery box 1 is charged, and the rechargeable battery is connected with the signal acquisition and transmission module 2 in the signal acquisition device.
In other embodiments, the rectifying and voltage stabilizing circuit can be arranged at other positions.
Preferably, the battery box 1 and the signal acquisition and transmission module 2 have the same volume, which is beneficial to the rotation balance. Preferably, the waterproof casing 13 is arranged outside the signal acquisition and emission module 2, so that the signal acquisition and emission module 2 in the running process of the vehicle can be prevented from being splashed by rainwater.
In the present embodiment, the shaft end fixing bracket 3 includes a circular mounting base plate 31 and four bent mounting legs 32, each mounting leg 32 is perpendicularly bent twice in opposite directions, and the mounting legs 32 are connected to the side end faces of the vehicle axle half shafts by screws. The mounting chassis 31 and the four bent mounting feet 32 form an open cavity, and the battery box 1 and the signal acquisition and transmission module 2 are both arranged in the open cavity. The four bent mounting feet 32 not only can play a role in fixed mounting, but also form an open cavity with the mounting chassis 31, and the battery box 1 and the signal acquisition and transmission module 2 are mounted in the open cavity, so that the structure of the power supply device is more compact, and the space occupied by the power supply device is reduced.
As shown in fig. 3, the rechargeable battery is a 9V rechargeable lithium battery, and after the alternating current generated by the generator set 100 is rectified and stabilized, a 5V stabilized direct current is formed to charge the 9V rechargeable lithium battery, and the 9V rechargeable lithium battery continuously supplies power to the signal acquisition and transmission module of the signal acquisition device, so as to ensure continuous and stable signal acquisition during the operation of the vehicle.
The power supply device provided by the application, when a vehicle runs, asynchronous rotation takes place under the effect of the planet wheel structure by the magnetic pole rotor 9 and the coil stator 10, the coil stator 10 cuts the magnetic induction line to generate alternating current, and the alternating current is supplied to the rechargeable battery in the battery box 1 after being rectified and stabilized.
In the description of the present application, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present application. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. The utility model provides a shaft end signal pickup assembly's power supply unit which characterized in that contains:
a shaft end fixing bracket (3) fixed at the side end of the vehicle half shaft;
a planetary gear mechanism (200) which is rotatably mounted on the shaft end fixing bracket (3), and a central shaft of the planetary gear mechanism (200) is coaxial with the vehicle half shaft;
a generator set (100) comprising a pole rotor (9) and a coil stator (10), the coil stator (10) being coaxially arranged within the pole rotor (9); the magnetic pole rotor (9) and the coil stator (10) are used for rotating asynchronously under the action of the planetary gear mechanism (200);
the battery box (1) is electrically connected with the generator set (100), and after alternating current generated by asynchronous rotation of the magnetic pole rotor (9) and the coil stator (10) is rectified and stabilized, the alternating current charges a rechargeable battery in the battery box (1) and supplies power for the signal acquisition device;
the planetary wheel mechanism (200) comprises a sun wheel (91), a gear ring (51), a circular planet carrier (6) and three planet wheels (11);
the planet carrier (6) is fixed on the shaft end fixing support (3), the gear ring (51) is sleeved outside the planet carrier (6) and the three planet wheels (11), the planet carrier (6) freely rotates on the gear ring (51), the planet wheels (11) are meshed with the gear ring (51), and the gear ring (51) keeps static; the sun gear (91) and the magnetic pole rotor (9) rotate synchronously;
the planet carrier (6) is provided with a central shaft and three planet shafts, the central shaft is divided into two sections, one section of the central shaft, which is close to the planet carrier (6), is provided with the sun gear (91) through a third bearing (8), and the other section of the central shaft, which is far away from the planet carrier (6), is fixedly connected with the coil stator (10); the three planet wheels (11) are respectively sleeved on the three planet shafts through second bearings (7);
the inner wall of the gear ring (51) is divided into two annular parts, the annular part adjacent to the shaft end fixing support (3) is a smooth surface, and gear teeth are arranged on the other annular part; the three planet wheels (11) are meshed with an annular part provided with gear teeth, and the planet carrier (6) is rotatably connected into the annular part of the smooth surface through a first bearing (4).
2. The power supply device for the shaft end signal acquisition device according to claim 1, wherein: the sun wheel (91) is coaxially fixed on the magnetic pole rotor (9), and the diameter of the sun wheel (91) is smaller than that of the magnetic pole rotor (9).
3. The power supply device for the shaft end signal acquisition device according to claim 2, wherein: when the vehicle runs, the rotation speed of a half shaft of the vehicle is n1(ii) a The lifting speed ratio of the planetary wheel mechanism (200) is k; the rotating speed of the magnetic pole rotor (9) is n2(ii) a The number of revolutions of the ring gear (51) is 0, and the relative number of revolutions Δ n between the coil stator (10) and the pole rotor (9) is (k-1) × n1
4. The power supply device for the shaft end signal acquisition device according to claim 1, wherein: the bottom of the gear ring (51) is fixedly provided with a gravity pendulum (52), and the gravity pendulum (52) is always in a vertical state.
5. The power supply device for the shaft end signal acquisition device according to claim 1, wherein: the power supply device further comprises a cap-shaped protective shell (12), the protective shell (12) covers the generator set (100) and the planetary gear mechanism (200), and the protective shell (12) is fixed on the side end face of the gear ring (51).
6. The power supply device for the shaft end signal acquisition device according to claim 1, wherein: the battery box (1) comprises a rechargeable battery and a rectification voltage stabilizing circuit, the rectification voltage stabilizing circuit is respectively connected with the generator set (100) and the rechargeable battery, the rechargeable battery is connected with a signal acquisition and emission module (2) in the signal acquisition device, and the battery box (1) and the signal acquisition and emission module (2) are the same in size.
7. The power supply device for the shaft end signal acquisition device according to claim 1, wherein: the shaft end fixing support (3) comprises a round mounting chassis (31) and four bent mounting feet (32), and the mounting feet (32) are connected to the side end face of the vehicle half shaft through screws.
CN202010713452.XA 2020-07-22 2020-07-22 Power supply device of shaft end signal acquisition device Active CN111917166B (en)

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CN114204716B (en) * 2021-10-29 2022-12-23 东风商用车有限公司 Power supply device for dynamic torque signal acquisition of transmission shaft

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