CN111994287A

CN111994287A - But manual clutch of auto-lock

Info

Publication number: CN111994287A
Application number: CN202010802859.XA
Authority: CN
Inventors: 梁斌才; 杨晓东
Original assignee: Chengdu Feiya Airborne Equipment Application Research Co ltd
Current assignee: Chengdu Feiya Airborne Equipment Application Research Co ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2020-11-27
Anticipated expiration: 2040-08-11
Also published as: CN111994287B

Abstract

The invention discloses a self-locking manual clutch device, which comprises a shell and an end cover, wherein the shell comprises a shell body and an end cover, a jaw type is used as a self-locking mode, a reed is used as a reset mechanism, and a manual clutch device which mainly comprises a screw rod, a nut, a spring and a friction plate can realize the electric and manual clutch switching function in a resistance umbrella cabin lifting mechanism, the self-locking manual clutch device can be matched with an NGW planetary reducer, the three basic components of the NGW planetary reducer are mutually switched to realize different functions, the self-locking manual clutch device has simple structure and convenient operation, can be conveniently applied in an electric transmission system, realizes self-locking by utilizing the jaw type, improves the self-locking reliability by utilizing the pressure of the spring, is favorable for improving the reliability of the lifting mechanism under the environments of mechanical vibration and the like, ensuring the flight safety.

Description

But manual clutch of auto-lock

Technical Field

The invention relates to a clutch device, in particular to a manual clutch device capable of self-locking.

Background

The drag parachute is an important power source for decelerating when a plurality of airplanes such as fighters and unmanned aerial vehicles land, the drag parachute is stored in a drag parachute cabin, and the lifting mechanism is used for lifting the drag parachute cabin from the airplane body before releasing the drag parachute.

Traditional elevating system is realized by hydraulic pressure straight line elevating system, and along with the development of electric technology, electric elevating system is replacing hydraulic pressure straight line elevating system gradually and is realizing the raising and lowering functions of drag parachute cabin.

When the parachute is on the ground, the electric lifting mechanism is usually in a power-off state and cannot electrically lift the parachute cabin; meanwhile, the transmission chain of the electric lifting mechanism is in a locked state, so that a simple and reliable manual clutch device is urgently needed, and the transmission chain of the electric lifting mechanism is disconnected, so that the manual lifting of the drag parachute cabin is realized; when the electric lifting drag parachute cabin is used, the device can stably and reliably close the electric transmission chain, and meanwhile, the device can effectively operate under the condition that the airplane is likely to suffer from mechanical vibration during flying.

Disclosure of Invention

The invention aims to provide a manual clutch device capable of self-locking, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a but manual clutch of auto-lock, includes the shell, and the shell includes casing and end cover, end cover and casing top fixed connection, is provided with first tooth on the end cover, the inside rotation of shell is connected with the driving medium, is provided with the transmission structure in the shell, and the transmission structure includes lead screw and the nut that matches with the lead screw, and the expert has the guide way in the casing, nut and guide way sliding connection, and the end cover is stretched out on the lead screw top, is provided with the second tooth on the lead screw, and the second tooth matches with first tooth and sets up, the driving medium outside has set gradually the friction disc that matches with the driving medium and the reed that matches with the transmission structure from inside to outside, and the reed both ends link firmly with the casing, and the reed bottom links firmly with the friction disc.

The nut side is provided with two keys, and the expert has two guide ways that are parallel to each other in the casing, key and guide way one-to-one set up and sliding connection.

The friction plate is crescent in cross section.

The center of the top of the friction plate is communicated with a first through hole, and the first through hole is matched with the screw rod.

And a second through hole is formed in the center of the top of the reed, and the inner diameter of the second through hole is larger than the outer diameter of the screw rod and smaller than the outer diameter of the spring.

The top end of the screw rod is in a hexagonal shape.

The transmission part is a gear ring in the NGW planetary reducer.

The invention has the beneficial effects that:

1. the manual clutch device mainly comprises a jaw type self-locking mode, a reed as a reset mechanism, a lead screw, a nut, a spring and a friction plate, and can realize the electric and manual clutch switching function in the drag parachute cabin lifting mechanism;

2. the self-locking manual clutch device can be matched with the NGW planetary reducer, and different functions are realized by utilizing mutual switching of three basic components of the NGW planetary reducer, for example, the manual clutch device is matched with a gear ring, so that the basic functions of gear ring fixing, sun gear input and planet carrier output can be realized, and the manual (electric) functions of sun gear fixing, gear ring input and planet carrier output can also be realized;

3. the self-locking manual clutch device has a simple structure, is convenient to operate and can be conveniently applied to an electric transmission system;

4. the self-locking manual clutch device realizes self-locking by utilizing a jaw type form, improves the reliability of self-locking by utilizing the pressure of the spring, is favorable for improving the reliability of the lifting mechanism in the environments of mechanical vibration and the like, and ensures the flight safety.

Drawings

FIG. 1 is a schematic diagram of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic structural view of the end cap of the present invention;

FIG. 4 is a schematic structural view of a lead screw according to the present invention;

fig. 5 is a schematic front view of the present invention.

In the figure, a shell 1, a shell body 11, a guide groove 111, an end cover 12 and a first tooth 121;

the transmission structure 2, the screw rod 21, the nut 22, the key 221 and the second tooth 211;

spring 3, reed 4, friction disc 5, driving medium 6, NGW planetary reducer 7.

Detailed Description

The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following.

Referring to fig. 1 to 5, in an embodiment of the present invention, a self-lockable manual clutch device is provided, referring to fig. 2, the self-lockable manual clutch device includes a housing 1, and the shape of the housing 1 refers to fig. 5, the housing 1 includes a shell 11 and an end cover 12, the shell 11 is formed by fixedly connecting the edge of the end cover 12 to the top of the shell 11, the bottom of the end cover 12 is provided with a first tooth 121 (refer to fig. 3), the upper portion of the shell 11 is provided with an action cavity (a through hole along the radial direction of the shell 11), and the action cavity is provided with a transmission structure 2.

The transmission structure 2 comprises a screw rod 21 and a nut 22 matched with the screw rod 21, two guide grooves 111 are communicated in the shell 11 (inner wall of the action cavity), the two guide grooves 111 are parallel to each other and are parallel to the screw rod 21, two keys 221 are fixedly installed on the side surface of the nut 22, and the keys 221 and the guide grooves 111 are arranged in a one-to-one correspondence and are connected in a sliding mode.

The top end of the screw rod 21 extends out of the end cover 12, and the top end is of an external hexagonal shape and is used as a manual operation interface.

The shell 11 is connected with a transmission piece 6 in a central rotation way.

Referring to fig. 4, a second tooth 211 is arranged on the screw rod 21, the second tooth 211 is in jaw fit with the first tooth 121, a crescent friction plate 5 matched with the transmission member 6 and a reed 4 matched with the transmission structure 2 are sequentially arranged on the outer side of the transmission member 6 from inside to outside, two ends of the reed 4 are fixedly connected with the shell 11, the bottom of the reed 4 is fixedly connected with the friction plate 5, a spring 3 is arranged on the outer side of the screw rod 21, the spring 3 is positioned between the nut 22 and the reed 4, a second through hole is formed in the center of the top of the reed 4, the inner diameter of the second through hole is larger than the outer diameter of the screw rod 21 and smaller than the outer diameter of the spring 3, a first through hole is formed in the center of the top of the friction plate 5, the first through hole is matched with the screw.

Working principle (see fig. 1):

firstly, during electric transmission:

the friction plate 5 rubs against the transmission member 6 under the pressure of the compressed spring 3 (the spring plate 4 deforms), so that the transmission member 6 and the shell 1 are kept relatively static, and the first teeth 121 and the second teeth 211 are engaged in a jaw-type manner, so that the whole device is kept stable.

Secondly, when manual intervention is needed:

s1, the screw rod 21 is pressed, the screw rod 21 and the nut 22 integrally move downwards, the spring 3 is compressed again, and the first teeth 121 and the second teeth 211 are separated;

s2, rotating the screw rod 21, enabling the screw rod 21 to drive the nut 22 to move upwards linearly to release the pressure of the spring 3, and enabling the spring 3 to recover the free state;

s3, the friction plate 5 loses the action pressure of the spring 3, the deformed reed 4 restores the free state, meanwhile, the friction plate 5 is driven to separate the friction plate 5 from the transmission piece 6, and the transmission piece 6 loses the braking force from the friction plate 5 and can rotate relative to the shell 1.

Thirdly, when the electric motor is switched back manually:

s1, pressing the screw rod 21 to integrally move the screw rod 21 and the nut 22 downwards, slightly compressing the spring 3, and separating the first teeth 121 and the second teeth 211;

s2, rotating the screw rod 21, driving the nut 22 to move linearly downwards by the screw rod 21, compressing the spring 3 under stress, and keeping the spring 3 in a compressed state;

s3, the compressed spring 3 presses the friction plate 5 to enable the transmission piece 6 to brake in a friction mode, and the transmission piece 6 is static relative to the outer shell 1;

s4, when the pressed friction plate 5 moves downwards, the spring C is driven

S5, the pressing force of the screw rod 21 is removed, so that the first tooth 121 and the second tooth 211 are engaged in a tooth-embedded mode, and the whole device is locked.

Particularly, the transmission member 6 can be a gear ring 6 in the NGW planetary reducer 7, and further the manual clutch device capable of self-locking can be matched with the NGW planetary reducer, and different functions can be realized by utilizing mutual switching among three basic components of the NGW planetary reducer, for example, the manual clutch device is matched with the gear ring 6, so that the basic functions of fixing the gear ring 6, inputting the sun gear and outputting the planet carrier can be realized, and the manual (electric) functions of fixing the sun gear, inputting the gear ring and outputting the planet carrier can also be realized.

The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A manual clutch device that can auto-lock, includes shell (1), its characterized in that: the shell (1) comprises a shell body (11) and an end cover (12), the end cover (12) is fixedly connected with the top of the shell body (11), a first tooth (121) is arranged on the end cover (12), a transmission piece (6) is rotatably connected inside the shell (1), a transmission structure (2) is arranged in the shell (1), the transmission structure (2) comprises a screw rod (21) and a nut (22) matched with the screw rod (21), a guide groove (111) is communicated in the shell body (11), the nut (22) is slidably connected with the guide groove (111), the top end of the screw rod (21) extends out of the end cover (12), a second tooth (211) is arranged on the screw rod (21), the second tooth (211) is matched with the first tooth (121), a friction plate (5) matched with the transmission piece (6) and a reed (4) matched with the transmission structure (2) are sequentially arranged on the outer side of the transmission piece (6) from inside, both ends of the reed (4) are fixedly connected with the shell (11), the bottom of the reed (4) is fixedly connected with the friction plate (5), the outer side of the screw rod (21) is provided with the spring (3), and the spring (3) is positioned between the nut (22) and the reed (4).

2. The self-lockable manual clutch device according to claim 1, characterized in that: two keys (221) are arranged on the side face of the nut (22), two guide grooves (111) which are parallel to each other are communicated in the shell (11), and the keys (221) and the guide grooves (111) are arranged in a one-to-one correspondence mode and are connected in a sliding mode.

3. The self-lockable manual clutch device according to claim 1, characterized in that: the section of the friction plate (5) is crescent.

4. The self-lockable manual clutch device according to claim 1, characterized in that: the center of the top of the friction plate (5) is communicated with a first through hole, and the first through hole is matched with the screw rod (21).

5. The self-lockable manual clutch device according to claim 1, characterized in that: and a second through hole is formed in the center of the top of the reed (4), and the inner diameter of the second through hole is larger than the outer diameter of the screw rod (21) and smaller than the outer diameter of the spring (3).

6. The self-lockable manual clutch device according to claim 1, characterized in that: the top end of the screw rod (21) is hexagonal.

7. The self-lockable manual clutch device according to claim 1, characterized in that: the transmission piece (6) is a gear ring (6) in the NGW planetary reducer (7).