WO2022134280A1 - 内置外转子电机驱动的差速式行走辊 - Google Patents

内置外转子电机驱动的差速式行走辊 Download PDF

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Publication number
WO2022134280A1
WO2022134280A1 PCT/CN2021/075397 CN2021075397W WO2022134280A1 WO 2022134280 A1 WO2022134280 A1 WO 2022134280A1 CN 2021075397 W CN2021075397 W CN 2021075397W WO 2022134280 A1 WO2022134280 A1 WO 2022134280A1
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WO
WIPO (PCT)
Prior art keywords
roller
rotor motor
outer rotor
support
wall
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PCT/CN2021/075397
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English (en)
French (fr)
Inventor
曹惠昌
李敏
杜宝兵
Original Assignee
绿友机械集团股份有限公司
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Filing date
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Application filed by 绿友机械集团股份有限公司 filed Critical 绿友机械集团股份有限公司
Priority to EP21908295.5A priority Critical patent/EP4261068A1/en
Priority to US17/695,871 priority patent/US11939166B2/en
Publication of WO2022134280A1 publication Critical patent/WO2022134280A1/zh

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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
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/16—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of differential gearing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
    • H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Definitions

  • the invention relates to a differential-speed traveling roller driven by a built-in outer rotor motor.
  • the traditional walking roller is driven by an engine or motor through a chain or belt.
  • the walking roller is equipped with a built-in differential device or a ratchet pawl device; there are also engines or motors that drive the walking roller through an external differential device. Due to the existence of the transmission system, the structure is complicated, the transmission efficiency is not high, and the system weight is heavy. And because of the existence of the gap between the rollers, the sealing effect of the system is poor, and the dust is easy to enter the roller, causing the wear of the differential device.
  • the purpose of the present invention is to solve the above technical problems and provide a differential traveling roller driven by a built-in outer rotor motor, which has a simple structure, is driven by an outer rotor motor, and integrates part of the differential mechanism on the outer rotor of the motor, thereby realizing the
  • the purpose of walking and steering, and the built-in sealing structure makes the differential device free from dust intrusion.
  • the present invention adopts the following technical solutions:
  • a differential traveling roller driven by a built-in external rotor motor which includes a left roller, a right roller, a support shaft, a drive device and a sealing device installed in the inner cavity of the left and right rollers, between the left roller and the right roller
  • the support shaft is arranged on the axis of the left and right rollers, the inner wall of the left roller is connected to the left support plate, the inner wall of the right roller is connected to the right support plate, and the outer ring of the support plate is provided with a dust outflow.
  • the drive device includes an outer rotor motor sleeved on the support shaft, end cap seats are respectively connected to the two end walls of the rotor body of the outer rotor motor, and a transmission device is arranged between the end cap seats on the corresponding side and the support plate,
  • the ratchet member of the transmission device is sleeved on the end cover seat, the ratchet member of the transmission device is connected with the corresponding support plate, and the sealing device is installed between the left and right support plates and is ringed around the outer rotor motor.
  • the left and right support sealing plates are respectively installed on the support shafts at the ends of the left and right rollers, and the ends of the support shafts are provided with flats to prevent the support shafts from rotating.
  • a differential traveling roller driven by a built-in external rotor motor which includes a left roller, a right roller, a support shaft, a drive device and a sealing device installed in the inner cavity of the left and right rollers, and a seal between the left and right rollers Structure
  • the support shaft is arranged on the axis of the left and right rollers
  • the left support plate is connected to the inner wall of the left roller
  • the right support plate is connected to the inner wall of the right roller
  • the outer ring of the support plate is provided with a gap for dust to flow out.
  • the driving device includes an outer rotor motor sleeved on the support shaft, a motor end cover and a transmission device, the motor end cover is connected to the end wall of the outer rotor motor, and the rotating shaft of the driving planetary gear of the transmission device is connected with the outer rotor motor.
  • the side wall of the rotor body is fixedly connected, and the driven side gear of the transmission device is connected with the corresponding support plate.
  • the left and right support sealing plates are respectively installed on the support shaft at the end, and the end of the support shaft is provided with a flat position to prevent the rotation of the support shaft.
  • a differential traveling roller driven by a built-in outer rotor motor which includes a left roller, a middle roller, a right roller, a support shaft, a drive device and a sealing device installed in the inner cavity of the left, middle and right rollers.
  • the support shaft is arranged on the axis of the left, middle and right rollers, the inner wall of the left roller is connected to the left support plate, the inner wall of the right roller is connected to the right support plate, and the inner wall of the right roller is connected to the right support plate.
  • the outer ring of the plate is provided with a gap for dust to flow out.
  • the driving device includes an outer rotor motor sleeved on the support shaft.
  • the two end walls of the rotor body of the outer rotor motor are respectively connected with end cover seats, and the end cover on the corresponding side
  • a transmission device is arranged between the seat and the support plate.
  • the side wall of the rotor body of the outer rotor motor is connected with the middle roller as a whole.
  • the transmission device includes a pawl member sleeved on the end cover seat.
  • Corresponding support plates are connected, a sealing device is installed between the support plate and the end cover seat, the left and right support seal plates are respectively installed on the support shafts at the ends of the left and right rollers, and the ends of the support shafts are provided with preventing support The flat position of the shaft rotation.
  • the pawl member of the transmission device includes a pawl and a pawl seat
  • the pawl seat includes a fixed ring sleeve fixed on the small diameter section of the end cover seat, and the large diameter section of the end cover seat is fixedly connected to the end cover seat by bolts.
  • On the end wall of the rotor body of the outer rotor motor at least three installation ring grooves are evenly spaced on the outer wall of the fixed ring sleeve, and pawls are rotatably installed on each of the installation ring grooves. It is a round head, the tail of the pawl is a pointed head, the round head is rotatably inserted into the installation ring groove, and its body extends through the groove.
  • the ratchet member includes a wheel frame sleeve and ratchet teeth
  • the inner ring of the wheel frame sleeve includes a large hole wall A
  • the evenly spaced ring on the large hole wall A is provided with the ratchet teeth corresponding to the prongs of the pawls
  • the outer ring of the wheel carrier sleeve includes a large diameter section A and a middle diameter section A.
  • the large diameter section A ring is provided with perforations aligned with the threaded holes of the support plate, and the aligned threaded holes and the perforated through bolts are
  • the ratchet member is fixedly connected with the support plate, and the support plate is sleeved on the middle diameter section A.
  • a differential traveling roller driven by a built-in external rotor motor which includes a left roller, a middle roller, a right roller, a support shaft, a driving device and a sealing device installed in the inner cavity of the left, middle and right rollers, the middle roller and the There is a sealing structure between the left roller and the right roller, the support shaft is arranged on the axis of the left, middle and right rollers, the inner wall of the left roller is connected to the left support plate, and the inner wall of the right roller is connected to the right support The outer ring of the support plate is provided with a gap for dust to flow out.
  • the drive device includes an outer rotor motor and a transmission device sleeved on the support shaft.
  • the transmission device includes a driving planetary gear and a passive side gear.
  • the driving planetary gear The gear is fixed on the side wall of the rotor body of the outer rotor motor through the rotating shaft, the rotating shaft is fixedly connected with the middle roller, or the rotor body of the motor is directly fixed with the middle roller, the driven side gear is fixed on the support plate, in the middle roller
  • a sealing device is installed between the roller and the support plate, and the left and right support seal plates are respectively installed on the support shafts at the ends of the left and right rollers.
  • the driving planetary gears are respectively installed on two corresponding surfaces of the side wall of the rotor body of the motor through the rotating shaft, and each surface is a gear or a group of three gears meshing in parallel.
  • the sealing device includes an annular spacer, which is arranged outside the outer rotor motor and is close to the support plates on both sides, and annular baffles are respectively provided at both ends of the annular spacer.
  • the outer end of the gear is clamped on the side wall of the wheel carrier sleeve or the side wall of the driven side gear.
  • the sealing device includes two annular blocking sleeves corresponding to the sealing structure between the middle roller and the left and right rollers respectively, and the outer end of the annular blocking sleeve is clamped on the side wall of the wheel frame sleeve or the side of the driven side gear. On the wall, the inner end extends to and abuts the middle roller.
  • the positioning structure is a flat position opened at the end of the support shaft or a key connection provided at the end of the support shaft.
  • the present invention adopts the outer rotor motor drive mode, utilizes the characteristics of the outer rotor motor, and integrates part of the transmission device on the outer rotor of the motor, thereby realizing the purpose of walking and steering, and has a built-in sealing structure to make the driving device Free from dust intrusion.
  • FIG. 1 is a schematic structural diagram of a first embodiment of the present invention.
  • FIG. 2 is a schematic view of the structure of the support plate of the present invention.
  • Fig. 3 is a schematic structural diagram of the disengagement state of the ratchet member and the ratchet member of the present invention.
  • FIG. 4 is a schematic structural diagram of the engagement state of the ratchet member and the ratchet member of the present invention.
  • FIG. 5 is a schematic structural diagram of a second embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a third embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a fourth embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a fifth embodiment of the present invention.
  • a differential traveling roller driven by a built-in external rotor motor As shown in Fig. 1 to Fig. 4, it is the first preferred embodiment of the present invention, a differential traveling roller driven by a built-in external rotor motor.
  • the traveling roller is a two-stage type, which includes a left roller 1 and a right roller 2. There is a sealed connection between the left roller 1 and the right roller 2.
  • the left support plate 11 is welded to the inner wall of the left roller 1, and the right support plate corresponding to the left support plate 11 is welded to the inner wall of the right roller 2.
  • the left support plate The structure of the plate 11 is the same as that of the right support plate.
  • the support plate 11 includes an annular plate body. The outer ring of the annular plate body is welded with the inner walls of the left and right rollers.
  • the inner ring of the plate body is provided with several threaded holes 112 at intervals; support shafts 3 are inserted at the central axes of the left and right rollers, and left and right support sealing plates 9 are sleeved on the support shafts at the ends of the left and right rollers , the support sealing plate is welded with the inner walls of the left and right rollers on the corresponding side, the outer rotor motor 4 is sleeved in the middle of the support shaft 3, and the two end walls of the rotor body 41 of the outer rotor motor 4 are respectively fixed to the end cover seat 5 by bolts , the inner ring of the end cover seat 5 includes a large hole wall, a limit hole wall and a small hole wall, a bearing 10 is arranged between the large hole wall and the support shaft, and the limit hole wall and the small hole wall are sleeved on the On the support shaft, the limit hole wall is used for the positioning of the outer ring of the bearing 10.
  • the outer ring of the end cover seat 5 includes a large diameter section 51, a transition section, a small diameter section 52 and a positioning section.
  • the large diameter section 51 passes through bolts It is fixedly connected with the end wall of the rotor body 41 of the outer rotor motor;
  • the pawl member 6 includes a pawl 61 and a pawl seat 62, and
  • the pawl seat 62 includes a fixed ring sleeve 621 fixed on the small diameter section 52, At least three installation ring grooves 622 are evenly spaced on the outer wall of the fixed ring sleeve 621 , and a ratchet 61 is rotatably mounted on each of the mounting ring grooves 622 .
  • the head of the ratchet 61 is a round head, and the ratchet
  • the tail of the roller is a pointed head, the round head is rotatably inserted into the installation ring groove, and its body extends through the groove.
  • the ratchet member 7 includes: The wheel frame sleeve and the ratchet teeth 71, the inner ring of the wheel frame sleeve includes a stepped large hole wall A72, a middle hole wall A and a small hole wall A, and the large hole wall A72 is evenly spaced on the ring with the pawls 61.
  • There are six ratchet teeth 71 corresponding to the prongs of the ratchet teeth.
  • the ratchet teeth are square bumps.
  • the connection between the bumps and the large hole wall A is rounded, and a bearing two is sleeved between the middle hole wall A and the support shaft 3 20.
  • the small hole wall A is used as the positioning of the outer ring of the second bearing, and the positioning section of the end cover seat sleeve is used as the positioning of the inner ring of the second bearing;
  • the outer ring of the wheel frame sleeve includes a stepped large diameter section A72, a middle
  • the diameter section A73 and the small diameter section A, the large diameter section A72 is provided with a through hole 721 aligned with the threaded hole 112, and the aligned threaded hole and the through hole are provided with bolts to make the wheel frame sleeve and the support plate fastened.
  • the support plate is sleeved on the middle diameter section A73 of the wheel frame sleeve; a sealing device is clamped between the left and right support plates, the sealing device is arranged outside the rotor body of the outer rotor motor, and the sealing device includes an annular spacer 81,
  • An annular spacer 82 is respectively provided between the annular spacer and the left and right support plates, the annular spacer 81 is arranged outside the outer rotor motor, and the annular spacer includes a circular tube body
  • the annular blocking sleeve 82 includes a conical cylinder 821, the annular cover 822 of the conical cylinder 821 is inserted into the slot of the large-diameter wall of the wheel frame sleeve, and the large-diameter end of the conical cylinder extends into the cylindrical body and abuts against on the inner wall.
  • one of the left and right rollers can be in an engaged state and the other in a disengaged state through external force, thereby realizing turning. Or, when it is necessary to turn, the motor speed is reduced or the original speed is maintained.
  • the ratchet pawl principle by increasing the external force, one of the double rollers can be in an engaged state and the other in a disengaged state, thereby realizing turning.
  • the outer rotor motor is built-in, on the one hand, the effective space inside the roller is utilized to make the structure more compact; on the other hand, it achieves the effect of turning while driving.
  • the left and right rollers adopt the radial labyrinth sealing method, and the annular spacer is supported by the left and right annular baffles; when impurities such as dust enter the roller through the labyrinth, the annular spacer separates it from the internal structure. It will enter the gap of the support plate through the annular baffle, effectively preventing dust from entering the inside of the working parts.
  • a differential traveling roller driven by a built-in outer rotor motor which includes a left roller 1A and a right roller 2A, and the left roller 1A and the right roller 2A are
  • the inner wall of the left roller 1A is welded with a left support plate 11A
  • the inner wall of the right roller 2A is welded with a right support plate corresponding to the left support plate 11A.
  • the structure of the left support plate and the right support plate is the same.
  • the left support plate 11A includes an annular plate body, the outer ring of the annular plate body is welded with the inner walls of the left and right rollers, and the outer ring of the annular plate body is provided with gaps 111A at intervals, and the inner ring of the annular plate body is provided with threaded holes at intervals 112A; supporting shafts 3A are inserted at the central axes of the left and right rollers, and left and right supporting sealing plates 9A are sleeved on the supporting shafts at the ends of the left and right rollers.
  • an outer rotor motor 4A is sleeved in the middle of the support shaft 3A, a transmission device is installed between the rotor body of the outer rotor motor and the support plate 11A, and a motor end cover 5A is sleeved on the support shafts on both sides of the outer rotor motor 4A , a bearing 30 is set between the motor end cover and the support shaft, the motor end cover 5A and the rotor body 41A of the outer rotor motor 4A are fixedly connected by bolts, and the transmission device includes the driving planetary gear 6A and the driven side gear 7A.
  • the side wall of the rotor body of the outer rotor motor is evenly spaced and fixed with two or six driving planetary gear shafts 6B, the driving planetary gear 6A is sleeved on each of the driving planetary gear shafts 6B respectively,
  • the support shafts on both sides are sleeved with the driven side gear 7A meshing with the driving planetary gear
  • the driven side gear 7A is fixed on the support shaft 3A through the bearing two 40
  • the driven side gear 6A is provided with a support plate 3A.
  • the threaded hole 112A is aligned with the counterbore 61A, and is fixed by bolts.
  • a sealing device is clamped between the left and right support plates, the sealing device is arranged outside the driving planetary gear 6A, and the sealing device includes an annular spacer 81A, which are respectively provided between the annular spacer and the left and right support plates
  • An annular spacer 82A the annular spacer 81A is arranged between the rotor body of the outer rotor motor and the inner walls of the left and right rollers, the annular spacer includes a circular tube body, and the annular spacer 82A includes a cone 821A, the cone The ring cover 822A of the cylinder 821A is inserted into the slot of the gear on the driven side, and the large diameter end of the conical cylinder extends into the cylindrical body and abuts against the inner wall.
  • the revolution of the active planetary gear in this embodiment is realized by the outer rotor motor; the left and right passive side gears are respectively connected to the left and right rollers, and when the active planetary gear revolves, it can drive the left and right rollers to rotate.
  • the outer rotor motor is arranged in the center of the left and right rollers, and the support shaft is used as the motor shaft and the support shaft of the left and right rollers.
  • both ends of the support shaft are fixed on the frame by a positioning structure to prevent the support shaft from rotating, and are integrated with the stator to maintain a static state;
  • the positioning structure is a flat position opened at the end of the support shaft or in the support shaft
  • the driving planetary gear shaft is integrated with the rotor body, and the two oppositely arranged driving planetary gear shafts are respectively equipped with driving planetary gears, and the driving planetary gears can rotate around the driving planetary gear shaft (called autorotation). ), and can also rotate with the rotor body of the motor around the stator and the support shaft (called revolution).
  • the left and right rollers adopt the radial labyrinth sealing method, and there are annular spacers and annular retaining sleeves inside. The annular spacer is supported by the left and right annular baffles.
  • FIG. 6 it is the third preferred embodiment of the present invention.
  • the difference between this embodiment and the second preferred embodiment is that the above-mentioned driving planetary gear 6A is replaced by three small driving planetary gears 6C meshing in parallel, a single driving The diameter of the planetary gear 6A will be too large, the radial space between the roller and the outer rotor of the motor is limited, and the axial space is too large.
  • the space size problem is solved.
  • the three gears are equivalent to a rigid connection and can be regarded as a whole, thereby driving the passive side gears on both sides to rotate; when driving in a corner, due to the large resistance of the inner roller, the edge driving planetary gear will drive the inner driving planetary gears one by one Rotation is generated to complete the turning action.
  • the traveling roller is a three-stage roller type, including a left roller, a middle roller 12 and a right roller, and the middle roller There is a sealing structure between the left and right rollers.
  • the length of the middle roller is short, and its length is preferably about 20% of the length of the entire walking roller.
  • the rotor body of the outer rotor motor is connected to the inner wall of the middle roller through the key 13 or other means. connected, the middle roller and the rotor body of the motor are integral, and rotate together with the rotor body. When driving in a straight line, the three rollers rotate synchronously; when it is necessary to turn, cut off the power supply.
  • one of the left and right rollers is in a disengaged state and the other is in an engaged state. .
  • the motor speed should be reduced or maintained at the original speed.
  • the sealing device only includes an annular baffle 82B, which corresponds to the labyrinth seal structure.
  • the large diameter end of the annular baffle extends into and closes to the inner wall of the middle roller.
  • the traveling roller is a three-stage roller type, including a left roller, a middle roller 12A and a right roller. There is a sealing structure between the roller and the left and right rollers.
  • the length of the middle roller is short, and its length is preferably about 20% of the length of the entire traveling roller.
  • the rotating shaft of the driving planetary gear is not connected with the middle roller, only the middle roller and the rotor body of the motor are directly fixed as a whole, so that the middle roller rotates together with the rotor body.
  • the sealing device only includes an annular baffle 82C, which corresponds to the labyrinth seal structure.
  • the large diameter end of the annular baffle extends into and closes to the inner wall of the middle roller.
  • the invention adopts the driving mode of the outer rotor motor, utilizes the characteristics of the outer rotor motor, and integrates part of the transmission device on the outer rotor of the motor, so as to realize the purpose of walking and steering, and has a built-in sealing structure, so that the driving device and the transmission device are protected from dust intrude.

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Abstract

一种内置外转子电机驱动的差速式行走辊，包括左辊（1）、右辊（2）、或中辊（12）、支撑轴（3）、驱动装置和密封装置，支撑轴（3）设置在左辊（1）、右辊（2）的轴线上，在左辊（1）、右辊（2）的内壁分别连接支撑板（11），在支撑板（11）外圈设有供灰尘流出的缺口（111），驱动装置包括套在支撑轴（3）上的外转子电机（4），外转子电机的外转子体（41）两端的端盖座（5）与支撑板（11）之间设置传动装置，传动装置的棘爪件（6）套固在端盖座（5）上或行星齿轮（6A）固设在外转子体（41）上，棘轮件（7）或被动齿轮（7A）与支撑板（11）连接，密封装置安装在左、右侧支撑板之间，在左、右辊的端部的支撑轴（3）上安装左、右支撑封板（9），在支撑轴（3）的端部设有扁位。该差速式行走辊采用外转子电机将部分传动装置集成于电机外转子体上，并内置密封结构，从而实现了行走及转向的目的。

Description

内置外转子电机驱动的差速式行走辊 技术领域
本发明涉及一种内置外转子电机驱动的差速式行走辊。
背景技术
传统的行走辊，是靠发动机或电机通过链条或皮带驱动行走辊轴，行走辊内部配有内置差速装置或棘轮棘爪装置；也有发动机或电机通过外差速装置驱动行走辊轴。这种结构方式由于传动系统的存在，结构复杂，传递效率不高，系统重量重。并且因为辊与辊之间间隙的存在，系统密封效果较差，灰尘容易进入辊内，造成差速装置磨损。
发明内容
本发明的目的在于解决上述技术问题提供一种内置外转子电机驱动的差速式行走辊，其结构简单，采用外转子电机驱动，将部分差速机构集成于电机的外转子上，从而实现了行走及转向的目的，并内置密封结构，使差速装置免受灰尘侵入。
为达成上述目的，本发明采用以下技术方案：
一种内置外转子电机驱动的差速式行走辊，它包括左辊、右辊、支撑轴和安装在左、右辊内腔中的驱动装置和密封装置，该左辊和该右辊之间为密封结构，该支撑轴设置在该左、右辊的轴线上，在左辊的内壁连接左支撑板，在右辊的内壁连接右支撑板，在支撑板的外圈设有供灰尘流出的缺口，该驱动装置包括套在所述支撑轴上的外转子电机，在该外转子电机的转子体两端壁分别连接端盖座，对应侧的端盖座与支撑板之间设置传动装置，该传动装置的棘爪件套固在该端盖座上，该传动装置的棘轮件与对应的支撑板连接，该密封装置安装在左、右支撑板之间并环设在该外转子电机的转子体之外，在左、右辊的端部的支撑轴上分别安装左、右支撑封板，在该支撑轴的端部设有防止支撑轴转动的扁位。
一种内置外转子电机驱动的差速式行走辊，它包括左辊、右辊、支撑轴和安装在左、右辊内腔中的驱动装置和密封装置，左辊和右辊之间为密封结构，该支撑轴设置在左、右辊的轴线上，在左辊的内壁连接左支撑板，在右辊的内壁连接右支撑板，在支撑板的外圈设有供灰尘流出的缺口，该驱动装置包括套在所述支撑轴上的外转子电机、电机端盖和传动装置，该电机端盖连接在该外转子电机的端壁，该传动装置的主动行星齿轮的转轴与外转子电机的转子体的侧壁固连，该传动装置的被 动侧齿轮与对应的支撑板连接，该密封装置安装在左、右支撑板之间并环设在主动行星齿轮之外，在左、右辊的端部的支撑轴上分别安装左、右支撑封板，在该支撑轴的端部设有防止支撑轴转动的扁位。
一种内置外转子电机驱动的差速式行走辊，它包括左辊、中辊、右辊、支撑轴和安装在该左、中、右辊内腔中的驱动装置和密封装置，中辊与左辊及右辊之间均设有密封结构，该支撑轴设置在左、中和右辊的轴线上，在左辊的内壁连接左支撑板，在右辊的内壁连接右支撑板，在支撑板的外圈设有供灰尘流出的缺口，该驱动装置包括套在所述支撑轴上的外转子电机，在该外转子电机的转子体两端壁分别连接端盖座，对应侧的端盖座与支撑板之间设置传动装置，该外转子电机的转子体的侧壁与中辊连接为一体，该传动装置包括套固在该端盖座的棘爪件，该传动装置的棘轮件与对应的支撑板连接，支撑板与端盖座之间设置密封装置，在左、右辊的端部的支撑轴上分别安装左、右支撑封板，在该支撑轴的端部设有防止支撑轴转动的扁位。
所述传动装置的棘爪件包括棘爪和棘爪座，该棘爪座包括套固在所述端盖座的小径段的固定环套，该端盖座的大径段通过螺栓固连在所述外转子电机转子体的端壁上，在该固定环套的外壁上均匀间隔环设至少三个安装环槽，各个安装环槽上分别可转动地安装棘爪，该棘爪的头部为圆头，该棘爪的尾部为尖头，该圆头可转动地插入安装环槽中，其身部经槽口伸出，辊子转动时，因为重力该身部可沿着该槽口摆动；所述棘轮件包括轮架套和棘齿，该轮架套的内圈包括大孔壁A，该大孔壁A上均匀间隔环设有与所述棘爪的尖头对应的棘齿，该轮架套的外圈包括大径段A和中径段A，该大径段A环设有与所述支撑板的螺纹孔对正的穿孔，对正的螺纹孔与穿孔穿设螺栓以使得该棘轮件与所述支撑板固连，该支撑板套在中径段A上。
一种内置外转子电机驱动的差速式行走辊，它包括左辊、中辊、右辊、支撑轴和安装在左、中、右辊内腔中的驱动装置和密封装置，该中辊与该左辊及该右辊之间均设有密封结构，该支撑轴设置在左、中、右辊的轴线上，在该左辊的内壁连接左支撑板，在该右辊的内壁连接右支撑板，在支撑板的外圈设有供灰尘流出的缺口，该驱动装置包括套在所述支撑轴上的外转子电机和传动装置，该传动装置包括主动行星齿轮和被动侧齿轮，该主动行星齿轮通过转轴固定在该外转子电机的转子体的侧壁上，该转轴与中辊固连，或者电机的转子体与中辊直接固连，该被动侧齿轮固连在支撑板上，在中辊与支撑板之间设置密封装置，在左、右辊的端部的支撑轴上分别安装左、右支撑封板，在该支撑轴的端部设有防止支撑轴转动的扁位。
所述主动行星齿轮通过转轴分别安装于电机转子体侧壁的两个对应面上，每面为一个齿轮或三个并列啮合的一组齿轮。
所述密封装置包括环形隔套，该环形隔套环设在所述外转子电机之外并靠近两侧的支撑板，在该环形隔套的两端分别设有环形挡套，该环形挡套的外端卡固在所述轮架套的侧壁上或被动侧齿轮的侧壁上。
所述密封装置包括分别对应中辊与左、右辊之间的密封结构的两环形挡套，该环形挡套的外端卡固在所述轮架套的侧壁上或被动侧齿轮的侧壁上，内端伸向并紧靠中辊。
所述定位结构为开设在支撑轴端部的扁位或在该支撑轴端部设置的键连接。
本发明的有益效果：本发明采用外转子电机驱动方式，利用外转子电机的特点，将部分传动装置集成于电机外转子上，从而实现了行走及转向的目的，并内置密封结构，使驱动装置免受灰尘侵入。
附图说明
为了更清楚地说明本发明的实施例，下面将结合附图对本实施例进行描述。
图1是本发明的第一实施例的结构示意图。
图2是本发明的支撑板的结构示意图。
图3是本发明的棘爪件和棘轮件脱开状态的结构示意图。
图4是本发明的棘爪件和棘轮件啮合状态的结构示意图。
图5是本发明的第二种实施例的结构示意图。
图6是本发明的第三种实施例的结构示意图。
图7是本发明的第四种实施例的结构示意图。
图8是本发明的第五种实施例的结构示意图。
具体实施方式
以下仅以实施例说明本发明可能的实施态样，然并非用以限制本发明所欲保护的范畴，合先叙明。
如图1至图4所示，为本发明的第一种优选实施例，一种内置外转子电机驱动的差速式行走辊，该行走辊为两段式，它包括左辊1和右辊2，该左辊1和右辊2之间为密封连接，在该左辊1的内壁焊接左支撑板11，在该右辊2的内壁焊接与左支撑板11对应的右支撑板，左支撑板11与右支撑板的结构相同，该支撑板11包括环形板体，该环形板体的外圈与左右辊内壁焊接，并在该环形板体的外圈间隔设置数个缺口111，该环形板体的内圈上间隔设有数个螺纹孔112；在左、右辊的中心轴 线处插设支撑轴3，在左、右辊的端部的支撑轴上套设左、右支撑封板9，该支撑封板与对应侧的左右辊内壁焊接，在该支撑轴3的中部套固外转子电机4，该外转子电机4的转子体41的两端壁分别通过螺栓固连端盖座5，该端盖座5的内圈包括大孔壁、限位孔壁和小孔壁，该大孔壁与支撑轴之间设置轴承一10，该限位孔壁和该小孔壁套在该支撑轴上，该限位孔壁用于轴承一10的外圈定位，该端盖座5的外圈包括大径段51、过渡段、小径段52和定位段，该大径段51通过螺栓与该外转子电机的转子体41的端壁固连；该棘爪件6包括棘爪61和棘爪座62，该棘爪座62包括套固在该小径段52上的固定环套621，在该固定环套621的外壁上均匀间隔环设至少三个安装环槽622，各个安装环槽622上分别可转动地安装棘爪61，该棘爪61的头部为圆头，该棘爪的尾部为尖头，该圆头可转动地插入安装环槽中，其身部经槽口伸出，辊子转动时，因为重力该身部可沿着该槽口摆动；所述棘轮件7包括轮架套和棘齿71，该轮架套的内圈包括呈阶梯状的大孔壁A72、中孔壁A和小孔壁A，该大孔壁A72上均匀间隔环设有与棘爪61的尖头对应的六个棘齿71，该棘齿为方形凸块，该凸块与大孔壁A的连接处倒有圆角，该中孔壁A与支撑轴3之间套设轴承二20，该小孔壁A作为轴承二外圈的定位，所述端盖座套的定位段作为轴承二的内圈定位；该轮架套的外圈包括呈阶梯状的大径段A72、中径段A73和小径段A，该大径段A72环设有与所述螺纹孔112对正的穿孔721，对正的螺纹孔与穿孔穿设螺栓以使得轮架套与支撑板固连，该支撑板套在该轮架套的中径段A73上；在该左右支撑板之间卡固密封装置，该密封装置环设在外转子电机的转子体之外，该密封装置包括环形隔套81，在该环形隔套与左、右支撑板之间分别设置环形挡套82，该环形隔套81环设在所述外转子电机之外，所述环形隔套包括圆管体，该环形挡套82包括锥筒821，该锥筒821的环盖822插卡在轮架套的大径壁的插槽上，该锥筒的大径端伸入该圆管体内并抵在内壁上。
当需要转弯行驶时，切断电源，根据棘轮棘爪原理，通过外力可实现左右辊中一个为啮合状态一个为脱开状态，从而实现转弯。或，当需要转弯行驶时，电机转速调低或维持原转速，根据棘轮棘爪原理，通过加大外力可实现双辊中一个为啮合状态一个为脱开状态，从而实现转弯。外转子电机内置，一方面利用了辊筒内部有效空间，使结构更加紧凑；一方面在传动的同时达到转弯的效果。密封说明：左右辊采用径向迷宫密封方式，环形隔套依靠左右环形挡套支撑；当灰尘等杂质通过迷宫进入辊内，环形隔套将其与内部结构分离开来，随着辊子转动，灰尘会通过环形挡套进入支撑板的缺口内，有效的避免了灰尘进入工作部件内部。
如图5所述，为本发明的第二种优选实施例，一种内置外转子电机驱动的差速式行走辊，它包括左辊1A和右辊2A，该左辊1A和右辊2A之间为迷宫式密封连接，在该左辊1A的内壁焊接左支撑板11A，在该右辊2A的内壁焊接与该左支撑板11A对应的右支撑板，左支撑板与右支撑板的结构相同，左支撑板11A包括环形板体，该环形板体的外圈与左右辊内壁焊接，并在该环形板体的外圈间隔设置缺口111A，该环形板体的内圈上间隔设有螺纹孔112A；在该左、右辊的中心轴线处插有支撑轴3A，在左、右辊的端部的支撑轴上套设左、右支撑封板9A，该支撑封板与对应侧的辊内壁焊接，在该支撑轴3A的中部套设外转子电机4A，在外转子电机的转子体与支撑板11A之间设置传动装置，在该外转子电机4A两侧的支撑轴上套设电机端盖5A，该电机端盖与支撑轴之间设置轴承一30，该电机端盖5A与外转子电机4A的转子体41A通过螺栓固连，所述传动装置包括主动行星齿轮6A和被动侧齿轮7A，在所述外转子电机的转子体的侧壁均匀间隔固连两个或六个主动行星齿轮轴6B，各该主动行星齿轮轴6B上分别套设所述主动行星齿轮6A，在该外转子电机的两侧的支撑轴上套设与该主动行星齿轮啮合的该被动侧齿轮7A，该被动侧齿轮7A通过轴承二40套固在支撑轴3A上，该被动侧齿轮6A上开设与支撑板3A的螺纹孔112A对正的沉孔61A，并通过螺栓固连。在左、右支撑板之间卡固密封装置，该密封装置环设在主动行星齿轮6A之外，该密封装置包括环形隔套81A，在该环形隔套与左、右支撑板之间分别设置环形挡套82A，该环形隔套81A环设在所述外转子电机的转子体与左右辊内壁之间，所述环形隔套包括圆管体，该环形挡套82A包括锥筒821A，该锥筒821A的环盖822A插卡在被动侧齿轮的插槽上，该锥筒的大径端伸入该圆管体内并抵在内壁上。
本实施例的主动行星齿轮的公转依靠外转子电机来实现；左右被动侧齿轮分别对应连接左右辊，主动行星齿轮公转时，可带动左右辊转动。左右辊中心布置外转子电机，支撑轴作为电机轴同时作为左右辊的支撑轴。具体地，支撑轴两端靠定位结构固定在机架上以防止该支撑轴转动，并和定子为一体，保持静止状态；该定位结构为开设在支撑轴的端部的扁位或在该支撑轴的端部设置的键；主动行星齿轮轴与转子体为一整体，两个相对布置的主动行星齿轮轴分别装配有主动行星齿轮，主动行星齿轮可绕主动行星齿轮轴旋转(称之为自转)，也可随电机的转子体绕定子和支撑轴转动(称之为公转)。当直线行驶时，由于左右辊受到的阻力相同，主动行星齿轮只公转不自转，主动行星齿轮与左右被动侧齿轮相当于刚性连接，左右辊 转速相同。当转弯时，通过外力使左右辊所受阻力不同，反馈到被动侧齿轮上，迫使主动行星齿轮产生自转，使内侧辊转速减慢甚至反向转动，而外侧辊转速加快，使左右辊转速产生差异，从而实现转弯或原地转向。密封说明：左右辊采用径向迷宫密封方式，并在内设环形隔套和环形挡套。环形隔套依靠左、右环形挡套支撑，当灰尘等杂质通过迷宫进入辊内，环形隔套将其与内部结构分离开来，随着辊子转动，灰尘会通过环形挡套进入支撑板的缺口，有效的避免了灰尘进入工作部件内部。
如图6所示，是本发明的第三种优选实施例，本实施例与第二种优选实施例的区别在于上述主动行星齿轮6A换成三个并列啮合的小主动行星齿轮6C，单个主动行星齿轮6A直径会偏大，辊筒与电机外转子之间的径向空间有限、轴向空间过大，当拆分为独立的三个小行星齿轮6C后，解决了空间尺寸的问题。当直线行驶时，三个齿轮等同于刚性连接，可看成一个整体，从而带动两侧被动侧齿轮转动；当转弯行驶时，由于内侧辊阻力大，边缘主动行星齿轮会逐个带动内侧主动行星齿轮产生自转，从而完成转弯动作。
如图7所示，是本发明的第四种优选实施例，与第一种优选实施例的区别在于：行走辊包括为三段辊式，包括左辊、中辊12和右辊，中辊与左、右辊之间分别为密封结构，该中辊的长度较短，其长度优选为整个行走辊长度的20％左右，外转子电机的转子体通过键13或其他方式与中辊的内壁连接，中辊与电机转子体为一整体，随转子体一同转动。当直线行驶时，三个辊子同步转动；当需要转弯时，切断电源，根据棘轮棘爪工作原理，左右辊中一个为脱开状态一个为啮合状态，中辊与内侧辊子运动同步，从而实现转弯。或，当需要转弯行驶时，电机转速调低或维持原转速，根据棘轮棘爪原理，通过加大外力可实现左右辊中一个为啮合状态一个为脱开状态，中辊与内侧辊子运动同步，从而实现转弯。密封装置仅包括环形挡套82B，该环形挡套对应迷宫式密封结构，该环形挡套的大径端伸入并紧贴中辊内壁，当灰尘通过迷宫进入辊筒内，会沿着环形挡套进入左右辊内部，从而有效保护了驱动装置和传动装置。
如图8所示，是本发明的第五种优选实施例，其与第二种优选实施例的区别在于：行走辊包括为三段辊式，包括左辊、中辊12A和右辊，中辊与左、右辊之间分别为密封结构，该中辊的长度较短，其长度优选为整个行走辊长度的20％左右，主动行星齿轮的转轴通过螺钉13A与中辊固连，或者该主动行星齿轮的转轴不与中辊连接，只需该中辊与电机转子体直接固连为一整体，使中辊随转子体一同转动。当直线行驶时，三个辊子同步转动；当转弯时，通过外力使左右辊所受阻力不同， 反馈到被动侧齿轮上，迫使主动行星齿轮产生自转，使内侧辊转速减慢甚至反向转动，而外侧辊转速加快，使左右辊转速产生差异，中辊转速介于左右辊之间，从而实现转弯或原地转向。密封装置仅包括环形挡套82C，该环形挡套对应迷宫式密封结构，该环形挡套的大径端伸入并紧贴中辊内壁，当灰尘通过迷宫进入辊筒内，会沿着环形挡套进入左右辊内部，从而有效保护了驱动装置和传动装置。
本发明采用外转子电机驱动方式，利用外转子电机的特点，将部分传动装置集成于电机外转子上，从而实现了行走及转向的目的，并内置密封结构，使驱动装置和传动装置免受灰尘侵入。

Claims (10)

  1. 一种内置外转子电机驱动的差速式行走辊，其特征在于：它包括左辊、右辊、支撑轴和安装在左、右辊内腔中的驱动装置和密封装置，该左辊和该右辊之间为密封结构，该支撑轴设置在该左、右辊的轴线上，在左辊的内壁连接左支撑板，在右辊的内壁连接右支撑板，在支撑板的外圈设有供灰尘流出的缺口，该驱动装置包括套在所述支撑轴上的外转子电机，在该外转子电机的转子体两端壁分别连接端盖座，对应侧的端盖座与支撑板之间设置传动装置，该传动装置的棘爪件套固在该端盖座上，该传动装置的棘轮件与对应的支撑板连接，该密封装置安装在左、右支撑板之间并环设在该外转子电机的转子体之外，在左、右辊的端部的支撑轴上分别安装左、右支撑封板，在该支撑轴的端部设有防止支撑轴转动的定位结构。
  2. 根据权利要求1所述的内置外转子电机驱动的差速式行走辊，其特征在于：所述传动装置的棘爪件包括棘爪和棘爪座，该棘爪座包括套固在所述端盖座的小径段的固定环套，该端盖座的大径段通过螺栓固连在所述外转子电机转子体的端壁上，在该固定环套的外壁上均匀间隔环设至少三个安装环槽，各该安装环槽上分别可转动地安装棘爪，该棘爪的头部为圆头，该棘爪的尾部为尖头，该圆头可转动地插入安装环槽中，其身部经槽口伸出，辊子转动时，因为重力该身部可沿着该槽口摆动；所述棘轮件包括轮架套和棘齿，该轮架套的内圈包括大孔壁A，该大孔壁A上均匀间隔环设有与所述棘爪的尖头对应的棘齿，该轮架套的外圈包括大径段A和中径段A，该大径段A环设有与所述支撑板的螺纹孔对正的穿孔，对正的螺纹孔与穿孔穿设螺栓以使得该棘轮件与所述支撑板固连，该支撑板套在中径段A上。
  3. 一种内置外转子电机驱动的差速式行走辊，其特征在于：它包括左辊、右辊、支撑轴和安装在左、右辊内腔中的驱动装置和密封装置，左辊和右辊之间为密封结构，该支撑轴设置在左、右辊的轴线上，在左辊的内壁连接左支撑板，在右辊的内壁连接右支撑板，在支撑板的外圈设有供灰尘流出的缺口，该驱动装置包括套在所述支撑轴上的外转子电机、电机端盖和传动装置，该电机端盖连接在该外转子电机的端壁，该传动装置的主动行星齿轮的转轴与外转子电机的转子体的侧壁固连，该传动装置的被动侧齿轮与对应的支撑板连接，该密封装置安装在左、右支撑板之间并环设在主动行星齿轮之外，在左、右辊的端部的支撑轴上分别安装左、右支撑封板，在该支撑轴的端部设有防止支撑轴转动的扁位。
  4. 一种内置外转子电机驱动的差速式行走辊，其特征在于：它包括左辊、中 辊、右辊、支撑轴和安装在该左、中、右辊内腔中的驱动装置和密封装置，中辊与左辊及右辊之间均设有密封结构，该支撑轴设置在左、中和右辊的轴线上，在左辊的内壁连接左支撑板，在右辊的内壁连接右支撑板，在支撑板的外圈设有供灰尘流出的缺口，该驱动装置包括套在所述支撑轴上的外转子电机，在该外转子电机的转子体两端壁分别连接端盖座，对应侧的端盖座与支撑板之间设置传动装置，该外转子电机的转子体的侧壁与中辊连接为一体，该传动装置包括套固在该端盖座的棘爪件，该传动装置的棘轮件与对应的支撑板连接，支撑板与端盖座之间设置密封装置，在左、右辊的端部的支撑轴上分别安装左、右支撑封板，在该支撑轴的端部设有防止支撑轴转动的扁位。
  5. 根据权利要求4所述的内置外转子电机驱动的差速式行走辊，其特征在于：所述传动装置的棘爪件包括棘爪和棘爪座，该棘爪座包括套固在所述端盖座的小径段的固定环套，该端盖座的大径段通过螺栓固连在所述外转子电机转子体的端壁上，在该固定环套的外壁上均匀间隔环设至少三个安装环槽，各该安装环槽上分别可转动地安装棘爪，该棘爪的头部为圆头，该棘爪的尾部为尖头，该圆头可转动地插入安装环槽中，其身部经槽口伸出，辊子转动时，因为重力该身部可沿着该槽口摆动；所述棘轮件包括轮架套和棘齿，该轮架套的内圈包括大孔壁A，该大孔壁A上均匀间隔环设有与所述棘爪的尖头对应的棘齿，该轮架套的外圈包括大径段A和中径段A，该大径段A环设有与所述支撑板的螺纹孔对正的穿孔，对正的螺纹孔与穿孔穿设螺栓以使得该棘轮件与所述支撑板固连，该支撑板套在中径段A上。
  6. 一种内置外转子电机驱动的差速式行走辊，其特征在于：它包括左辊、中辊、右辊、支撑轴和安装在左、中、右辊内腔中的驱动装置和密封装置，该中辊与该左辊及该右辊之间均设有密封结构，该支撑轴设置在左、中、右辊的轴线上，在该左辊的内壁连接左支撑板，在该右辊的内壁连接右支撑板，在支撑板的外圈设有供灰尘流出的缺口，该驱动装置包括套在所述支撑轴上的外转子电机和传动装置，该传动装置包括主动行星齿轮和被动侧齿轮，该主动行星齿轮通过转轴固定在该外转子电机的转子体的侧壁上，该转轴与中辊固连，或者电机的转子体与中辊直接固连，该被动侧齿轮固连在支撑板上，在中辊与支撑板之间设置密封装置，在左、右辊的端部的支撑轴上分别安装左、右支撑封板，在该支撑轴的端部设有防止支撑轴转动的扁位。
  7. 根据权利要求3或6所述的内置外转子电机驱动的差速式行走辊，其特征在于：所述主动行星齿轮通过转轴分别安装于电机转子体侧壁的两个对应面上，每 面为一个齿轮或一组齿轮，其中一组齿轮为三个并列啮合的齿轮。
  8. 根据权利要求1至3任一项所述的内置外转子电机驱动的差速式行走辊，其特征在于：所述密封装置包括环形隔套，该环形隔套环设在所述外转子电机之外并靠近两侧的支撑板，在该环形隔套的两端分别设有环形挡套，该环形挡套的外端卡固在所述轮架套的侧壁上或被动侧齿轮的侧壁上。
  9. 根据权利要求4至7任一项所述的内置外转子电机驱动的差速式行走辊，其特征在于：所述密封装置包括分别对应中辊与左、右辊之间的密封结构的两环形挡套，该环形挡套的外端卡固在所述轮架套的侧壁上或被动侧齿轮的侧壁上，内端伸向并紧靠中辊。
  10. 根据权利要求1所述的内置外转子电机驱动的差速式行走辊，所述定位结构为开设在支撑轴的端部的扁位或在该支撑轴的端部设置的键连接。
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