CN111911556B

CN111911556B - Bidirectional transmission conversion device and transmission method thereof

Info

Publication number: CN111911556B
Application number: CN202010708847.0A
Authority: CN
Inventors: 汪磊; 高梦娟; 李春波; 杜卓然; 彭博; 常金成; 魏雨倩; 刘磊; 董育伟
Original assignee: Huaiyin Institute of Technology
Current assignee: Huai'an Branch of Ruanfeng Technology (Jiangsu) Co.,Ltd.
Priority date: 2020-07-22
Filing date: 2020-07-22
Publication date: 2021-10-08
Anticipated expiration: 2040-07-22
Also published as: CN111911556A

Abstract

The invention discloses a bidirectional transmission conversion device and a transmission method thereof, and belongs to the field of mechanical transmission. The device comprises a driving piece, a driving mechanism and a driving mechanism, wherein the driving piece provides driving force, output ends are arranged at two ends of the driving piece, and the driving piece can rotate forwards and backwards; further comprising: two output shafts which are respectively in transmission connection with the output end of the driving piece; the two clutch transmission parts are arranged at two ends of the driving part and are respectively in transmission connection with the corresponding output shafts through thread pairs; under the action of positive and negative rotation of the driving piece, the output shaft moves relative to the corresponding clutch transmission piece along the axis direction of the output shaft. The invention can achieve the purpose of bidirectional conversion transmission by utilizing a simple clutch transmission structure, and compared with the prior art, the device has the advantages of small abrasion consumption in the using process, difficult failure, low manufacturing cost and low maintenance cost.

Description

Bidirectional transmission conversion device and transmission method thereof

Technical Field

The invention belongs to the field of mechanical transmission, and particularly relates to a bidirectional transmission conversion device and a transmission method thereof.

Background

At present, the transporter needs to use a transmission device to transmit power to move in the using process, and selective transmission connection is often needed according to different requirements of motion states so as to output different speeds.

Under the development trend of portability and multifunctionality of the transporter, selective clutch transmission is carried out, the device is not suitable for a transmission form with a plurality of driving pieces and large occupied space, and can replace a device capable of realizing bidirectional transmission conversion through forward and reverse rotation.

Through retrieval, the Chinese patent publication number: CN 104061253A; the publication date is as follows: 9 month 24 days 2014; the utility model discloses a two-way transmission clutch that motor spindle is just reversing, including the motor spindle, its characterized in that: the motor main shaft respectively extends out of the left end cover and the right end cover of the motor in a bidirectional way; the device is provided with a left main transmission sleeve and a right main transmission sleeve, 3-4 uniformly distributed radial opening ear-shaped open grooves are formed in the outer end face of a circular disc of the main transmission sleeve, and steel balls are placed in the open grooves; the two main transmission sleeves are respectively and symmetrically fixedly sleeved on the left main shaft and the right main shaft; the stepped shaft is movably matched and sleeved on the excircle of the open slot of the right main transmission sleeve by a blind hole in the center of the end surface of the large-diameter shaft of the auxiliary transmission sleeve, and the excircle of the large-diameter shaft of the auxiliary transmission sleeve is fixedly sleeved with a bearing positioned on a right end cover of the motor; the step sleeve-shaped wheel is sleeved with the outer circle of the open slot of the left main transmission sleeve in a movable fit mode through the large-diameter hole of the step hole in the center of the auxiliary transmission sleeve, two bearings are sleeved and fixed between the small-diameter hole and the left main shaft, and the outer circle of the small-diameter shaft of the auxiliary transmission sleeve for the wheel is in an eccentric shaft shape. The bidirectional transmission clutch of the application controls transmission/non-transmission by using the friction clamping position rotation of the steel balls, although the structure is greatly simplified compared with the clutch component of the existing bidirectional transmission device, the device of the application has the condition of large abrasion consumption in the using process, needs frequent regular maintenance and brings inconvenience to practical use.

Disclosure of Invention

In order to solve at least one of the above technical problems, according to an aspect of the present invention, there is provided a bidirectional transmission converting apparatus, including:

the driving piece provides driving force, output ends are arranged at two ends of the driving piece, and the driving piece can rotate forwards and backwards;

further comprising:

two output shafts which are respectively in transmission connection with the output end of the driving piece; and

the two clutch transmission parts are arranged at two ends of the driving part and are respectively in transmission connection with the corresponding output shafts through thread pairs;

under the action of positive and negative rotation of the driving piece, the output shaft moves relative to the corresponding clutch transmission piece along the axis direction of the output shaft.

According to the bidirectional transmission conversion device disclosed by the embodiment of the invention, optionally, the clutch transmission part is a threaded ring which is a ring part with threads arranged on the inner wall;

the output shaft is an output shaft A, one end of the output shaft is in transmission connection with the output end of the driving piece, and the other end of the output shaft penetrates through the threaded ring and extends out;

the output shaft A is located on the portion between the threaded ring and the driving piece, a threaded section A, a straight section A and a limiting ring are sequentially formed on the portion, between the threaded ring and the driving piece, of the output shaft A, threads on the wall surface of the threaded section A are matched with threads on the threaded ring, the wall surface of the straight section A is straight, and protrusions of the limiting ring are formed on the wall surface of the output shaft A.

Further, still include the piece A that resets, it is the elastic component, is in compression state, and one end butt is on the screw ring, and the other end and spacing collar butt.

According to the bidirectional transmission conversion device of the embodiment of the invention, optionally, the clutch transmission comprises:

the transmission cover is of a cover body structure, and one end part of the transmission cover is in transmission connection with the driving piece;

the planetary gear train comprises a gear ring, a planetary gear carrier, a planetary gear and a sun gear, wherein the gear ring is fixedly connected with the inner side wall of the transmission cover

The end cover is sleeved outside the transmission cover, the center of the end part of the end cover protrudes along the axis direction of the end cover to form a clutch sleeve, a thread section B is formed on the outer wall of the top end of the clutch sleeve, the outer wall of the bottom end of the clutch sleeve is a straight section, and the planet wheel carrier is sleeved on the clutch sleeve and is in threaded connection with the clutch sleeve;

the output shaft is an output shaft B which is coaxially and fixedly connected with the sun gear, penetrates through the planet wheel carrier and the clutch sleeve and extends out of the end part of the end cover.

Further, still include reset piece B, it is the elastic component, is in compression state, and one end butt is in the end cover tip, and the other end and planet wheel carrier butt.

And the locking piece is sleeved on the output shaft B and positioned between the planetary gear carrier and the sun gear, the locking piece and the output shaft B are relatively static, and a threaded hole C matched with the threaded section B is formed in the end surface, close to the clutch sleeve, of the locking piece.

According to another aspect of the invention, a bidirectional transmission method is provided, and the method adopts the bidirectional transmission conversion device provided by the embodiment of the invention to perform transmission.

Advantageous effects

(1) The bidirectional transmission conversion device adopts the clutch transmission member in transmission connection with the thread pair, and can control the displacement of the output shaft relative to the clutch transmission member to be fed or retracted through the forward rotation or the reverse rotation of the driving member, so that whether the output shaft is in external transmission or not is selected, the clutch structure required by selective clutch is greatly simplified, the cost consumption is reduced, and the failure rate is reduced;

(2) the bidirectional transmission conversion device adopts the threaded ring to be matched with the output shaft A for clutch transmission, has simple structure, can effectively control whether the external transmission is carried out according to the positive and negative rotation of the driving piece, and is not easy to break down;

(3) according to the bidirectional transmission conversion device, the reset piece A is arranged to ensure that the output shaft A and the threaded ring always meet the stress condition of a meshing state, and the shell can be extended out or retracted in time when the driving piece rotates, so that the effectiveness and timeliness of external transmission of the output end are ensured;

(4) the bidirectional transmission conversion device is provided with the clutch transmission part consisting of the planetary gear train, and has the functions of external speed-up transmission and speed-down transmission while flexibly and accurately switching the state of whether the external transmission is carried out or not when the driving part rotates forwards and backwards, so that the requirements of various motion states of a transporter are met, and the space occupation is greatly saved;

(5) according to the bidirectional transmission conversion device, through the arrangement of the locking piece, when the ducted fan is not started, the sun gear in the planetary gear train is locked through the locking piece and the clutch sleeve, and the output shaft B is ensured not to be transmitted outwards;

(6) according to the bidirectional transmission conversion device, the reset piece B is arranged to ensure that the planetary gear carrier can be meshed with the threaded section B in time, so that clutch transmission between the planetary gear train and the output shaft B can be accurately carried out;

(7) the bidirectional transmission method can achieve the purpose of bidirectional conversion transmission by utilizing a simple clutch transmission structure, and compared with the prior art, the method has the advantages of small abrasion consumption, difficulty in failure and low manufacturing cost and maintenance cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description only relate to some embodiments of the present invention and are not limiting on the present invention.

FIG. 1 is a schematic diagram of the bidirectional transmission conversion apparatus of the present invention;

FIG. 2 is a schematic view of the bidirectional transmission conversion device of the present invention, partially broken away;

FIG. 3 is a schematic structural diagram of a characteristic part of the output end A of the invention provided with a resetting piece A;

FIG. 4 shows a schematic view of the threaded ring structure of the present invention;

FIG. 5 shows a schematic diagram of the structure at output end A of the present invention;

FIG. 6 is a schematic view of the disassembled state of FIG. 5 after the output shaft A is disassembled;

FIG. 7 is a schematic view of the driver shown disassembled from the end cap;

FIG. 8 shows an exploded view of a clutch transmission construction of the present invention;

FIG. 9 is a schematic diagram of the planetary gear train of the present invention;

FIG. 10 is an exploded view of the planetary gear train of FIG. 9;

FIG. 11 shows a schematic diagram of a planetary carrier configuration of the present invention;

FIG. 12 is a schematic view of the retaining member of the present invention;

FIG. 13 is a schematic view of a perspective end cap of the present invention;

FIG. 14 is a schematic view of another perspective construction of the end cap of the present invention;

figure 15 shows a schematic view of the present invention applied to a ducted fan opening and closing apparatus;

FIG. 16 is a schematic structural view illustrating another perspective of the opening and closing device for a ducted fan according to the present invention;

FIG. 17 shows a detailed schematic view of the structure of the wing plate end of the ducted fan opener;

FIG. 18 shows a detailed schematic view of another perspective of a ducted fan opener wing plate end structure;

fig. 19 is a schematic structural view showing an opening and closing seat of the ducted fan opening and closing device;

FIG. 20 is a schematic structural view of a ducted fan opening and closing device with another view angle;

FIG. 21 is a schematic view of the ducted fan opener arrangement shown in a closed position after use in a transporter;

FIG. 22 is a schematic view of another perspective of the ducted fan opener assembly shown in a closed position after use in a transporter;

FIG. 23 illustrates a schematic view of a ducted fan opener in a deployed position after use in a transporter;

FIG. 24 is a schematic view showing the ducted fan opening and closing device applied to the carrier with the rear ducted fan outlet facing the ground;

FIG. 25 is a schematic view showing the positional relationship between the ducted fans, wing panels and reduction gearbox when the transporter is in a land-going state;

fig. 26 is an enlarged view at a in fig. 25.

Reference numerals:

1000. a ducted fan; 1010. a fan driving unit; 1011. a housing; 1020. a blade;

2000. a wing plate; 2010. an arc-shaped bent rod; 2011. a limiting block; 2020. a hinged seat A;

3000. an opening and closing seat; 3010. an arc-shaped channel; 3011. limiting counter bores; 3020. a hinged seat B; 3030. a rotating shaft;

4000. a pin shaft;

5000. a vehicle body; 5001. a wheel;

6000. a reduction gearbox; 6010. a transmission shaft of the reduction gearbox;

1. a drive unit; 10. an output end A; 11. an output end B;

2. an output shaft A; 20. a threaded section A; 21. a straight section A; 22. a limiting ring; 23. a connector; 230. connecting holes;

3. a threaded ring; 30. a threaded hole A; 300. a thread A;

4. a reset member A;

5. a transmission cover;

6. a planetary gear train; 60. a ring gear; 61. a planet carrier; 610. a threaded hole B; 620. a planet wheel I; 621. a planet wheel II; 63. a sun gear;

7. an end cap; 70. a clutch sleeve; 700. a threaded section B; 701. a straight section;

8. an output shaft B;

9. a reset member B; 90. a locking member; 900. a threaded hole C; 901. a keyway.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "a," "B," "C," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms "forward," "reverse," and "forward," "reverse," are not used to distinguish one element from another, but rather are used to distinguish one direction of rotation from another, and similarly, the terms "a" or "an" and similar terms do not denote a limitation of quantity, but rather denote the presence of at least one.

Example 1

The bidirectional transmission conversion device of the embodiment comprises:

the driving piece 1 provides driving force, output ends are arranged at two ends of the driving piece 1, and the driving piece 1 can rotate forwards and backwards;

further comprising:

two output shafts are respectively in transmission connection with the output end of the driving piece 1; and

the two clutch transmission parts are arranged at two ends of the driving part 1 and are respectively in transmission connection with the corresponding output shafts through thread pairs;

under the positive and negative rotation action of the driving piece 1, the output shaft moves along the axis direction of the output shaft relative to the corresponding clutch transmission piece.

The existing bidirectional transmission conversion devices are required to be provided with complex clutches for selective clutching, and have the problems of high cost consumption, easy damage and high maintenance cost.

According to the embodiment, for the defects, the characteristic that the thread transmission pair can convert the rotary motion into the linear work is utilized, the clutch transmission member connected with the thread transmission pair in a transmission manner is adopted, and the displacement of the output shaft relative to the clutch transmission member for feeding or withdrawing can be controlled through forward rotation or reverse rotation of the driving member 1, so that whether the output shaft is externally transmitted or not is selected, the clutch structure required by selective clutch is greatly simplified, the cost consumption is reduced, and the failure rate is reduced.

It should be noted that the transmission connection between the output shaft and the output end of the driving member 1 in this embodiment is not necessarily a direct transmission connection, but may be a transmission connection realized through an intermediate member; the driving member 1 may be an element such as a motor that can provide driving force and satisfy the condition of the present embodiment, and the driving member 1 in the present embodiment is a motor.

The motor of this embodiment has just reversing function, and both ends all are equipped with the output, two outputs all have output shaft transmission formula to connect, two separation and reunion driving medium and two output shaft transmission formula threaded connection, when the motor rotates, satisfy the meshing condition between output shaft and separation and reunion driving medium, the axial displacement who converts output shaft or separation and reunion driving medium in the rotatory in-process of meshing, thereby make the condition whether external transmission is in place after the displacement, it is opposite, when the motor antiport, withdraw from the meshing gradually between output shaft and the separation and reunion driving medium, in this process, also convert into the axial displacement of the two, thereby regard as the condition whether external transmission after the displacement of targetting in place.

In practical application, the relative displacement direction of the output shaft and the clutch transmission piece during the forward rotation/reverse rotation of the motor can be controlled by setting the thread pair thread direction between the output shaft at the two ends of the motor and the clutch transmission piece, so that the aim of controlling whether to drive the motor outwards is fulfilled.

Example 2

The embodiment shows a structural mode of the clutch transmission and the output shaft of the invention, as shown in fig. 1 and fig. 2, the clutch transmission is a threaded ring 3 which is a ring member with threads arranged on the inner wall;

the output shaft is an output shaft A2, one end of the output shaft is in transmission connection with the output end of the driving piece 1, and the other end of the output shaft passes through the threaded ring 3 and extends out;

the output shaft A2 is located on the part between the threaded ring 3 and the driving piece 1 and is sequentially provided with a threaded section A20, a straight section A21 and a limiting ring 22, threads on the wall surface of the threaded section A20 are matched with threads on the threaded ring 3, the wall surface of the straight section A21 is straight, and the limiting ring 22 protrudes and is formed on the wall surface of the output shaft A.

In this embodiment, the driving member 1, i.e. the motor, is disposed in the housing 1011 as shown in fig. 1 to protect the components of the device and fix the positions of the components, fig. 4 shows the detailed structure of the threaded ring 3, a threaded hole a30 is formed in the middle of the threaded ring 3, a thread a300 is disposed on the hole wall, and the threaded ring 3 is fixed on the housing 1011 by four fixing legs extending outward.

For the clutch transmission member of this embodiment, the output shaft is an output shaft a2 structure, which can be embodied in detail in fig. 5 and 6, the output shaft a2 is in transmission connection with an output end of the motor, in this embodiment, the connection end of the output shaft a2 is in a spline shape, and the output end of the motor is provided with a matching spline groove shape to ensure the transmission effect and prevent relative rotation between the output shaft a 3526 and the output end, the output shaft a2 is movably connected with the output end in a displaceable manner, and the output shaft a2 can be displaced along the direction of the spline groove under the limitation of the spline groove; the output shaft a2 of this embodiment is disposed through the threaded ring 3, as shown in fig. 2, a threaded section a20, a straight section a21 and a stop collar 22 are sequentially disposed at a portion of the output shaft a2 between the threaded ring 3 and the output end, when the motor rotates to drive the output shaft a2 to rotate, the threaded section a20 meets the engagement condition with the threaded ring 3 during the rotation, during the engagement precession, since the threaded ring 3 is fixed, the output shaft a2 is axially displaced and further extends out from the threaded ring 3, when viewed from the perspective of fig. 1, the output shaft a2 extends out from the housing 1011, when the output shaft a2 is displaced by a distance, the straight section a21 enters the threaded ring 3, the output shaft a2 is disengaged from the threaded ring 3, at this time, the output shaft a2 does not axially displace any more, but rotates only under the driving of the motor, accordingly, a corresponding transmission mechanism may be disposed outside the housing 1011, after the output shaft a2 extends out from the housing 1011, the transmission mechanism is in transmission connection with the transmission mechanism to perform external transmission, when the external transmission needs to be stopped, the reverse rotation motor reversely and axially displaces the output shaft A2 under the reverse rotation meshing of the thread section A20 and the thread ring 3, the output shaft A2 is retracted into the shell 1011 from the perspective of figure 1, and the transmission mechanism is disengaged from the external transmission mechanism at the moment, so that the external transmission is stopped.

When the motor reverse rotation control output shaft a2 withdraws, there may be the condition that the screw thread section a20 fails to mesh with the screw thread ring 3 in time, and this condition can cause adverse effect to external transmission, and in order to avoid this phenomenon to appear, this embodiment has further improved, as shown in fig. 3, has set up the piece that resets a4, and it is the elastic component, is in compression state, and one end butt is on the screw thread ring 3, and the other end butts with spacing collar 22, and the piece that resets a4 can be the spring. Elastic gasket, etc. have elastic component, the piece that resets A4 in this embodiment adopts the coarse pitch spring, establish the spring cover on output shaft A2, one end and screw ring 3 butt other end and spacing collar 22 butt, and be compression state, when motor corotation output shaft A2 stretches out, reset piece A4 is compressed further, when the motor reversal, under the piece A4 elastic deformation effort that resets, satisfy the atress condition of engaged state all the time between the screw thread of output shaft A2 and screw ring 3, when output shaft A2 rotates to can mesh smoothly with screw ring 3 screw thread, can get into the engaged state immediately, thereby guarantee in time withdrawing of output shaft A2 when the reversal.

Example 3

In the bidirectional transmission method of this embodiment, the clutch transmission member and the output shaft a2 described in embodiment 2 are used at both ends of the motor, when the motor rotates forward, the output shaft a2 at one end extends out and is in transmission connection with an external transmission mechanism to transmit externally, the output shaft a2 at the other end retracts into the housing 1011 to not transmit externally, when the motor rotates backward, the output shaft a2 at one end retracts to stop transmitting externally, and the output shaft a2 at the other end extends out to transmit externally.

Through the bidirectional transmission method of the embodiment, the purpose of bidirectional conversion transmission can be achieved by utilizing a simple clutch transmission structure, and compared with the prior art, the method is low in wear consumption, not easy to break down, and low in manufacturing cost and maintenance cost.

Example 4

This embodiment shows another construction of the clutch transmission and the output shaft of the present invention, and as shown in fig. 7 and 8, the clutch transmission includes:

the transmission cover 5 is of a cover body structure, and one end part of the transmission cover is in transmission connection with the driving piece 1;

the planetary gear train 6 comprises a gear ring 60, a planetary gear carrier 61, a planetary gear and a sun gear 63, wherein the gear ring 60 is fixedly connected with the inner side wall of the transmission cover 5;

the end cover 7 is sleeved outside the transmission cover 5, the center of the end part of the end cover 7 protrudes along the axis direction of the end cover 7 to form a clutch sleeve 70, a thread section B700 is formed on the outer wall of the top end of the clutch sleeve 70, a flat section B701 is formed on the outer wall of the bottom end of the clutch sleeve 70, and the planet carrier 61 is sleeved on the clutch sleeve 70 and is in threaded connection with the clutch sleeve 70;

the output shaft is an output shaft B8 which is coaxially and fixedly connected with the sun gear 63, penetrates through the planetary gear carrier 61 and the clutch sleeve 70 and extends out of the end part of the end cover 7.

One end of the transmission cover 5 faces the output end direction of the motor and is in transmission connection with the output end of the motor, the transmission cover 5 rotates along with the starting of the motor, the planetary gear train 6 is accommodated in the inner wall of the transmission cover 5, the structure of the planetary gear train 6 is shown in figures 9 and 10, wherein a gear ring 60 of the planetary gear train 6 is fixedly connected with the transmission cover 5, the gear ring 60 rotates when the transmission cover 5 rotates, and the gear ring 60 is used for power input in the planetary gear train 6; the end cover 7 is covered on the outer side of the transmission cover 5 and is coaxially arranged with the transmission cover 5, the same end of the end cover is open, one end of the end cover is in a cover shape which is not open, as shown in fig. 13 and 14, a clutch sleeve 70 arranged in the center of the end part of the end cover 7 is provided with a straight section B701 and a threaded section B700, a planet carrier 61 is sleeved on the clutch sleeve 70, a threaded hole B610 is also formed in the planet carrier 61, the structure of the planet carrier 61 is as shown in fig. 11, when the motor rotates forwards, the planet carrier 61 is in the straight section B701 and is not engaged with the threaded section B700, at the moment, the planet carrier 61 can rotate freely, at the moment, according to the transmission characteristics of the planet gear system, power is input from the gear ring 60 and output from the planet carrier 61, the sun gear 63 does not output power, and further, the output shaft B8 fixedly connected with the sun gear 63 does not output power, at the moment, the output shaft B8 does not transmit power, otherwise, the motor rotates backwards, the planet carrier 61 is driven by the gear ring 60, and the planetary gear carrier 61 is fixed after being engaged with the thread section B700 of the clutch sleeve 70 and the planetary gear carrier 61 moves to the top end of the clutch sleeve 70 (the limit can be carried out by forming a ring piece with a large diameter at the top end to prevent the planetary gear carrier 61 from being disengaged from the clutch sleeve 70 after being engaged over), power is input from the gear ring 60 and the planetary gear carrier 61 is locked according to the transmission characteristics of the planetary gear train, the power is transmitted from the sun gear 63 at the moment, and the output shaft B8 fixedly connected with the sun gear 63 also obtains power, namely the output shaft B8 is externally transmitted at the moment.

Furthermore, when the motor rotates forwards, in order to ensure that the sun gear 63 can be locked to ensure that the output shaft B8 does not transmit outwards, the locking member 90 is sleeved on the output shaft B8 and is positioned between the planet wheel carrier 61 and the sun gear 63, the locking member 90 and the output shaft B8 are relatively static, the end surface of the locking member 90 close to the clutch sleeve 70 is provided with a threaded hole C900 matched with the threaded section B700, the position of the locking member 90 in the embodiment is shown in fig. 10, the structure of the locking member 90 is shown in fig. 12, the locking member 90 and the output shaft B8 can be kept relatively static by arranging a key groove 901 and matching key connection on the locking member 90, when the motor rotates forwards, the planet wheel carrier 61 rotates under the transmission of the gear ring 60 to drive the planet wheel to rotate, the sun gear 63 is driven to rotate, the locking member 90 is locked after being engaged with the threaded section B700 of the clutch sleeve 70, at this time, the sun gear 63 is kept in a static state, and power is input from the gear ring 60, output from the inter-planet 61.

Further, when the motor rotates reversely, in order to ensure that planetary carrier 61 can be engaged with threaded section B700 in time, reset element B9 is provided, which is an elastic element and is in a compressed state, one end of the reset element is abutted against the end of end cover 7, and the other end of the reset element is abutted against planetary carrier 61, reset element B9 of the embodiment is an elastic washer, and is sleeved on output shaft B8, as shown in fig. 10, when planetary carrier 61 is located at straight section B701, reset element B9 is compressed, and when the motor rotates reversely, and the engagement condition of planetary carrier 61 and clutch sleeve 70 is met, the reset element B9 can be engaged with threaded section B700 in time.

Further, as shown in fig. 10, the planetary gear train 6 of the present embodiment includes a ring gear 60, a planetary carrier 61, a first planetary gear 620, a second planetary gear 621 and a sun gear 63, the ring gear 60 is engaged with the first planetary gear 620, the first planetary gear 620 and the second planetary gear 621 transmit coaxially and have the same angular velocity, the first planetary gear 620 and the second planetary gear 621 are fixed on the planetary carrier 61, and the sun gear 63 is engaged with the second planetary gear 621.

Example 5

In the bidirectional transmission method of this embodiment, the clutch transmission member and the output shaft B8 described in embodiment 4 are used at both ends of the motor, when the motor rotates forward, the sun gear 63 at one output end is locked, the output shaft B8 does not transmit outward, the planetary carrier 61 at the other end is locked, the sun gear 63 outputs power, the output shaft B8 connected to the sun gear 63 transmits outward, when the motor rotates backward, the planetary carrier 61 at one output end is locked, the sun gear 63 outputs power, the output shaft B8 connected to the sun gear 63 transmits outward, the sun gear 63 at the other output end is locked, and the output shaft B8 does not transmit outward.

By the bidirectional transmission method, the purpose of bidirectional transmission conversion is realized, and the purpose of speed increasing/reducing can be achieved at the same time by utilizing the characteristics of the planetary gear train, so that the bidirectional transmission method has a wider application range in a limited equipment space.

Example 6

In the bidirectional transmission method of the embodiment, one end of the motor is an output end a10, the other end of the motor is an output end B11, the output end a10 adopts the clutch transmission member and the output shaft a2 described in embodiment 2, the output end B11 adopts the clutch transmission member and the output shaft B8 described in embodiment 4, when the motor rotates positively, the output shaft a2 at the output end a10 extends out and is in transmission connection with an external transmission mechanism for external transmission, the sun gear 63 at the output end B11 is locked, and the output shaft B8 does not transmit externally; when the motor rotates reversely, the planet carrier 61 at the output end B11 is locked, the sun gear 63 outputs power, the output shaft B8 connected with the sun gear 63 transmits outwards, and the output shaft A2 at the output end A10 retracts into the shell 1011 to not transmit outwards.

By the bidirectional transmission method, synchronous transmission output and speed-up/speed-down transmission output can be performed, and the bidirectional transmission method is suitable for being used in various environmental scenes by a transporter.

Example 7

The two-way transmission conversion equipment of this embodiment is applied to in the duct fan opening and closing device, and duct fan opening and closing device includes:

a ducted fan 1000;

a wing plate 2000 having one end fixedly connected to an outer sidewall of the ducted fan 1000;

further comprising:

an opening and closing seat 3000 rotatably connected to the other end of the wing plate 2000;

the arc-shaped bent rod 2010 protrudes from the end part of the other end of the wing plate 2000, and the circle center of the arc-shaped bent rod 2010 is positioned on the rotation axis of the wing plate 2000 and the opening and closing seat 3000;

the arc-shaped channel 3010 is matched with the arc-shaped bent rod 2010 in shape and is arranged on the opening and closing seat 3000, and the arc-shaped channel 3010 is connected with the arc-shaped bent rod 2010 in a matching manner;

a limiting block 2011 with the sectional area larger than that of the arc-shaped bent rod 2010 is arranged at the end part of the arc-shaped bent rod 2010, and a limiting counter bore 3011 with the shape matched with that of the limiting block 2011 is arranged at the corresponding end part of the arc-shaped channel 3010;

when the ducted fan 1000 is folded, the limiting block 2011 is matched and abutted against the limiting counter bore 3011.

The ducted fan 1000 has a fan driving unit 1010 disposed on a central axis of the ducted fan, and the fan driving unit 1010 is the bidirectional transmission conversion device of the present invention.

As shown in fig. 15 and 16, the ducted fan 1000 and the wing plate 2000 disposed on the outer sidewall of the ducted fan 1000 are both of the existing structural design, and the difference of this embodiment is that an opening and closing seat 3000 is further disposed, the opening and closing seat 3000 is disposed on the vehicle body, the opening and closing seat 3000 is of a block structure, and the end of the wing plate 2000 is rotatably connected with an end of the opening and closing seat 3000, that is, when the opening and closing seat 3000 is fixed, the wing plate 2000 can rotate around the opening and closing seat 3000 by being driven by an external driving member (not shown), so as to drive the ducted fan 1000 to rotate to achieve the purpose of opening and closing the ducted fan 1000; a further improvement point of the present embodiment is that an arc-shaped bending rod 2010 is convexly disposed on an end surface of the wing plate 2000 near the opening and closing seat 3000, as shown in fig. 17 and 18, the arc-shaped bending rod 2010 is disposed around a rotation axis of the wing plate 2000 relative to the opening and closing seat 3000, and at the same time, an arc-shaped channel 3010 having a shape matching the arc-shaped bending rod 2010 is disposed at a corresponding position of the opening and closing seat 3000, as shown in fig. 19 and 20, the arc-shaped bending rod 2010 and the arc-shaped channel 3010 are connected in a matching manner, and under the matching limitation of the arc-shaped bending rod 2010 on the wing plate 2000 and the arc-shaped channel 3010 on the opening and closing seat 3010, the wing plate 2000 can have a more stable rotation track when being driven by an external driving element, thereby increasing the use safety; further, the curved rod 2010 is formed at the end of the wing plate 2000, one end of the curved rod 2010 is connected to the wing plate 2000, the other end of the curved rod 2010 is a tail end, the tail end of the curved rod is provided with a limit block 2011, the cross-sectional area of the limit block 2011 is larger than that of the curved rod 2010, the shape of the limit block 2011 is not limited, the curved rod 2010 can be in a step shape, a cylinder shape, a prism shape and the like, the curved rod is cylindrical in the embodiment, correspondingly, the position of the curved channel 3010 where the tail end of the curved rod 2010 is located when the wing plate 2000 is folded, namely, the corresponding end of the curved channel 3010 is provided with a limit counter bore 3011 with a shape matched with the shape of the limit block 2011, through the structural arrangement, when the wing plate 2000 is folded, the limit block 2010 is just in the limit counter bore 3011, and because the cross-sectional area of the limit block 2010 is larger than that of the curved rod 2010 and the curved channel 3010, under the surface interference effect of the two, the wing plate 2000 is not folded to the position further, therefore, the ducted fan 1000 can be stopped in time after reaching the position during folding, and cannot collide with a vehicle body, so that the safety is ensured; when the wing plate 2000 is unfolded, since the end of the wing plate 2000 is rotatably connected to the opening and closing seat 3000, the end of the wing plate 2000 abuts against the end of the opening and closing seat 3000 after the wing plate 2000 is unfolded in place, thereby positioning the ducted fan 1000 in the unfolded state can be completed.

Example 8

The bidirectional transmission conversion device of the present embodiment is applied to a ducted fan opening and closing device, and is further improved on the basis of embodiment 7, wherein the wing plate 2000 is hinged to the opening and closing seat 3000.

The wing plate 2000 and the opening and closing seat 3000 are rotatably connected through a hinge structure, and specifically include a hinge seat a2020 at the end of the wing plate 2000 as shown in fig. 17 and 18, a hinge seat B3020 at the end of the opening and closing seat 3000 as shown in fig. 19 and 20, and a pin 4000 as shown in fig. 15 and 16, the hinge seat a2020 and the hinge seat B3020 are matched and then hinged through the pin 4000, under the hinge structure, the wing plate 2000 and the opening and closing seat 3000 have a stable rotating shaft, and then the rotating track is further limited by matching the arc-shaped bent rod 2010 and the arc-shaped channel 3010, so that the safe and stable operation of the ducted fan 1000 structure in the opening and closing process can be ensured, and the operation failure rate is reduced.

Further, in this embodiment, the arc-shaped bent rods 2010 are provided with a plurality of curved channels 3010, and the curved channels 3010 and the limiting blocks 2011 and the limiting counter bores 3011 are also provided with a plurality of curved channels, so that the stability of the rotating track of the wing plates 2010 can be further enhanced by the aid of the arc-shaped bent rods 2010 and the corresponding structures, and a function of stopping in time after the arc-shaped bent rods 2010 are drawn in place is further ensured.

Example 9

The bidirectional transmission conversion device of the embodiment is applied to a ducted fan opening and closing device, and is further improved on the basis of the embodiment 8, and a rotating shaft 3030 is convexly arranged at the end part of the opening and closing seat 3000.

The ducted fan opening and closing device is applied to an air-ground amphibious transporter, wherein an opening and closing seat 3000 is rotatably connected with a transporter body 5000 through a rotating shaft 3030, the transporter body 5000 is in a motorcycle shape, and ducted fan opening and closing devices are arranged on two sides of the transporter body 5000, as shown in fig. 21 and 22.

When the transporter is in a land state, the ducted fans 1000 are folded, as shown in fig. 21 and 22; when the transporter is in flight, the ducted fan 1000 is deployed, as shown in fig. 23 and 24.

Example 10

The bidirectional transmission conversion device is applied to a ducted fan opening and closing device, the ducted fan opening and closing device is applied to an air-ground amphibious transporter, and is further improved on the basis of embodiment 9, wherein in the bidirectional transmission conversion device, an output end A10 of a driving piece 1 is connected with an output shaft A2 and matched with a threaded ring 3; the output end B11 is connected with an output shaft B8 through a planetary gear train 6, and the output shaft B8 is connected with blades 1020 of the ducted fan; wherein, the conveyer is also provided with a reduction box 6000 which is arranged in the vehicle body 5000 and is in transmission connection with wheels 5001 of the vehicle body 5000. A reduction gearbox transmission shaft 6010 is arranged on the reduction gearbox 6000 and transmits power to the reduction gearbox 6000;

after the ducted fan 1000 is folded, an output shaft A10 is in transmission connection with a transmission shaft 6010 of the reduction gearbox.

As shown in fig. 23 and 24, the reduction gearbox 6000 is disposed at the lower part of the vehicle body 5000, and the structure in which the output shaft a10 is in transmission connection with the reduction gearbox transmission shaft 6010 after the ducted fan 1000 is folded is as shown in fig. 25 and 26.

In the embodiment, a driving component for driving the wheels 5001 to rotate in the land state of the transporter is omitted, the weight of the vehicle body 5000 is reduced, and the installation space is saved, in the land state, the ducted fan 1000 is folded and retracted, at the moment, the output end A10 of the driving piece 1 in the ducted fan 1000 is very close to the vehicle body 5000, a reduction gearbox 6000 is arranged at a corresponding position, because the ducted fan 1000 outputs lift thrust and needs high power, the driving piece 1 directly transmits the wheels 5001 of the transporter, the transmission speed is too high, the reduction gearbox 6000 is arranged, the output shaft A2 transmits the reduction gearbox 6000, the wheels 5001 are transmitted after the reduction gearbox 6000, and the speed requirement in the land state is more easily met.

The structure of the reduction gearbox 6000 and the structure of the transmission connection between the reduction gearbox 6000 and the wheels 5001 are already common in the prior art, and are not described herein.

In the embodiment, the output end a10 of the driving element 1 is connected with the output shaft a2, and is in transmission connection with the reduction gearbox 6000 after the ducted fan 1000 is folded to transmit the vehicle wheel 5001, the output end B11 is connected with the output shaft B8 through the planetary gear train 6, and the blades 1020 are controlled to output thrust lift force after the ducted fan 1000 is unfolded.

Example 11

The two-way transmission conversion device of the embodiment has the following specific parameters after being finally applied to the transporter:

the vehicle body 5000 is of a motorcycle type, the mass is 180kg, the maximum load rear weight is 280kg, the mass center of the vehicle body is 0.7m away from a front axle and is positioned at 0.618 between two wheel wheelbases, two ducted fans 1000 are respectively arranged on two sides of the vehicle body 5000, the total width of the transporter is 1.7m in a flying state, and the center distance of the two ducted fans 1000 is 1.0 m.

In this embodiment, the ducted taper angle β of the ducted fan 1000 is 9 °, the ducted outlet diameter D is 700mm, and the ratio of the ducted outlet diameter D to the ducted inner diameter D has a relatively significant influence on the ducted lift force, and the most significant result of the ratio is D/D is 1.2, so the ducted inner diameter D is 583mm, and the lift force provided by the ducted fan is the largest when the ducted aspect ratio (the ratio of the ducted inner diameter D to the ducted height c) is 1.5, that is, D/c is 1.5, so the ducted height c is 388.9 mm; the radius r of the culvert lip is the radius of the front edge of the section of the culvert shell, and is an important structural parameter influencing the flow field characteristic of the culvert inlet, and through the research of the applicant, as the radius r of the culvert lip is increased from 2.5 percent of the height of the culvert to 7.5 percent, the lift force generated by the culvert is slowly increased. The increase of the radius r of the culvert lip can improve the flowing condition of bypass flow at the inlet of the culvert, so that the adverse pressure gradient at the inner side of the culvert inlet is reduced, the possibility of air flow separation and stalling is reduced, and the lift force generated by the culvert is correspondingly increased, thereby taking the r as 7.5 percent x c as 7.5 percent x 388.9 as 29.16 mm; the effective lift area can be increased by increasing the wall thickness b of the ducted passage, the ducted lift is increased, but the structural weight is also increased, in the embodiment, b is 28.8% multiplied by c is 0.288 multiplied by 388.9 is 112mm, and the optimal ducted lift can be obtained within a reasonable weight range; further, the applicant has found that the maximum ducted lift is obtained when the blade disc mounting the blades 1020 is located at about 1/3 from the inlet of the duct, in this embodiment the blade disc is located at 1/3 from the inlet of the duct, and the gap between the blade disc and the inner wall of the duct is 1mm, and the duct lift effect is reduced when the gap is more than 1 mm.

Determination of the output of the drive 1 of the present embodiment:

in the embodiment, the diameter D of a propeller disc is 580mm, the length H of an bypass is 388.9mm, and the diameter D of a propeller hub is₀＝180mm；

According to the theorem of momentum,

wherein A is the area of the paddle disc; v₀Is the axial incoming flow velocity; Δ V₂Δ V for slipstream velocity increase₂＝V₂-V₀；V₂Is the slipstream zone air flow velocity; ρ is the air density; q is the ducted thrust factor.

The ducted fan system is used as a vertical lifting part, and the axial inflow speed of the ducted fan system can be regarded as zero, namely V₀＝0，ΔV₂＝V₂. The following ducted fan system overall model can be derived from the above equation:

due to the diameter D of the propeller disc and the diameter D of the propeller hub₀The area A of the paddle disk is 0.239m²，

Taking the ducted thrust factor q as 0.478;

at least 280Kg of weight is required to be loaded, namely the load of about 2744N, and the flying motorcycle is considered to be provided with a pair of ducted fan systems, namely the lift generated by a single fan system is not less than 1372N;

in the above equation, since the vertical takeoff is generally not high in height, the air density ρ under the standard atmospheric pressure is 1.225kg/m³；

In conclusion, the motor used by the ducted fan is a high-power brushless direct current motor, and the maximum output power is at least 54 KW;

further, the driving member of this embodiment adopts the brushless dc motor, and the motor technology that outputs such a large power is not mature yet, so this application adopts the planetary gear train 6 structure to accelerate, wherein, the number of teeth Z of the ring gear 60 is₁54, planet wheel one 620 tooth number Z₂17; planetary gear II 621 teeth number Z _2’30; sun gear 63 tooth number Z_H19,; from this, the ratio of the rising speed of the sun gear output is obtained

Therefore, under the acceleration of the planetary gear train 6 in the embodiment, the existing brushless motor technology can completely meet the output power requirement of the low-altitude flight of the transporter.

The examples described herein are merely illustrative of the preferred embodiments of the present invention and do not limit the spirit and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. A bidirectional transmission conversion device comprises a transmission mechanism,

it is characterized by also comprising:

under the positive and negative rotation action of the driving piece, the output shaft moves relative to the corresponding clutch transmission piece along the axis direction of the output shaft;

the clutch transmission part is a threaded ring, and the clutch transmission part is a ring part with threads arranged on the inner wall;

2. A bidirectional drive conversion device as recited in claim 1, wherein the clutch drive comprises:

the transmission cover is of a cover body structure, and one end part of the transmission cover is in transmission connection with the output end of the driving piece;

the planetary gear train comprises a gear ring, a planetary gear carrier, a planetary gear and a sun gear, wherein the gear ring is fixedly connected with the inner side wall of the transmission cover;

3. A bidirectional transmission conversion device as defined in claim 2, wherein: the reset device comprises an end cover and a planet gear carrier, and is characterized by further comprising a reset piece B which is an elastic piece and is in a compression state, one end of the reset piece B is abutted to the end part of the end cover, and the other end of the reset piece B is abutted to the planet gear carrier.

4. A bidirectional transmission conversion device as recited in claim 3, wherein: the locking piece is sleeved on the output shaft B and located between the planetary gear carrier and the sun gear, the locking piece is static relative to the output shaft B, and a threaded hole C matched with the threaded section B is formed in the end face, close to the clutch sleeve, of the locking piece.

5. A bidirectional transmission method is characterized in that: the bidirectional transmission conversion device of claim 1 is used for transmission.

6. A bidirectional transmission method is characterized in that: the bidirectional transmission conversion device of claim 4 is used for transmission.