AU2021101892A4

AU2021101892A4 - Electric winch structure

Info

Publication number: AU2021101892A4
Application number: AU2021101892A
Authority: AU
Inventors: Jui-Feng Hsu
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-30
Filing date: 2021-04-13
Publication date: 2021-06-03
Anticipated expiration: 2029-04-13
Also published as: TWI717270B; FR3109772A3; FR3109772B3; DE202021102178U1; TW202142477A

Abstract

OF THE DISCLOSURE An electric winch structure mainly includes a power unit, reducer, drive rod, seat, friction ring, first friction plate, second friction plate, one-way bearing, first bearing, second bearing and rope take-up device. With the 5 above components, the power unit is started to rotate to drive the reducer, then drive the drive rod to start rotating, and drive the rope take-up device connected to the drive rod to start rotating together to cause a steel rope on the rope take-up device to be wound up. With the reducer, the rotating speed of the power unit can be reduced and the torque can be increased. When the 10 power unit is stopped rotating, the friction ring will then be engaged with the one-way bearing so as to prevent the rope take-up device from being reversely rotated, thereby increasing the overall transmission efficiency, and achieving a self-locking effect at the same time. 2 21 23 22 231 232 5 15 FIG. 4

Description

21 23 22 231 232

5

15

FIG. 4

TITLE: ELECTRIC WINCH STRUCTURE

(a) Technical Field of the Invention

The present invention relates to an electric winch structure, and more

particularly to an electric winch structure having a self-locking function.

(b) Description of the Prior Art

The winch is a hoisting tool that uses a reel to wind a steel rope and hoist

an object through a suspension pulley; it can carry out horizontal movement of

a heavy object by means of a pulley location design in addition to the vertical

lifting of the object.

The winch in motion will cause the torque to be relatively low due to the

high rotating speed of the motor, and the low torque will then make the winch

itself unable to carry a higher weight such that a reducer will be equipped on

the winch, thereby reducing the rotating speed, increasing the torque, and then

increasing the load capacity of the winch.

The reducers on the market are mainly divided into worm gear reducers

and gear reducers, where each of the worm gear reducers mainly has a

self-locking function, and the input shaft and output shaft thereof are not on

the same axial line and not on the same plane; and the gear reducer can

achieve the speed reduction purpose by means of the engagements of the gears

thereof, having a higher transmission efficiency.

However, the above reducers have the following problems and

disadvantages while in use:

1. The worm gear reducers easily generate high friction in a long-term

use because of their self-locking structure, and will thus reduce the

transmission efficiency thereof

2. The gear reducers have no self-locking function, such that when the

motor stop rotating, the steel cable on the reel has a chance to be

pulled out, which has safety concerns.

3. The winch using a gear reducer will be added with power brake on the

motor to prevent the above steel cable from being pulled out, so that

when the power is shut off, the motor is immediately killed, but the

overall cost is increased.

SUMMARY OF THE INVENTION

The main object of the present invention is to provide an electric winch

structure, allowing a friction ring to be engaged with a one-way bearing when

the rotation of a power unit is stopped, thereby preventing a rope take-up

device from being reversely rotated to achieve a self-locking effect.

Another object of the present invention is to provide an electric winch

structure reducing the rotating speed of the power unit through a reducer,

thereby increasing torque and thus an overall transmission efficiency.

To achieve the above objects, the present invention proposes an electric

winch structure, including: a power unit; a reducer, in connection with the

power unit, and including at least one transmission gear adjacent to the power

unit, a brake gear in engagement with the transmission gear, and a housing

accommodating the transmission gear and brake gear; a drive rod, in

connection with the brake gear; a seat, in connection with the housing, the

drive rod passed through the seat; a friction ring, configured on the drive rod,

and positioned between the brake gear and seat; a first friction plate,

positioned at one side of the friction ring, and positioned between the friction

ring and brake gear, the first friction plate provided on the brake gear; a second

friction plate, positioned at one side of the friction ring away from the first

friction plate, and positioned between the friction ring and seat, the second friction plate configured on the drive rod; a one-way bearing, provided on the friction ring, and positioned between the first friction plate and second friction plate; a first bearing, configured on the drive rod, and positioned between the first friction plate and seat; a second bearing, configured on the drive rod, and positioned in the seat, the housing accommodating the drive rod, friction ring, first friction plate, second friction plate, one-way bearing and first bearing.

With the above structure, when the power unit is driven to act, the power

unit will then drive the transmission gear in the reducer to rotate to cause the

brake gear in engagement with the transmission gear to rotate, and further

drive the drive rod in connection with the brake gear to move. Furthermore, the rope take-up device in connection with the drive rod will also start to rotate,

and a steel rope positioned on the rope take-up device will then be wound up

to vertically lift or drag a heavy object hung on another end of the steel rope.

At this time, if the power unit is stopped, the friction ring configured on

the drive rod will then be in engagement with the one-way bearing, causing

the one-way bearing to stop rotating, and lock the brake gear and drive rod at

the same time. Furthermore, the first friction plate and second friction plate

respectively positioned on the two sides of the friction ring will pinch and

squeeze the drive rod at the moment when the friction ring is engaged with the

one-way bearing so as to make the driving rod to stand still firmly, and further prevent the rope take-up device from being dragged by the steel rope to rotate reversely at the moment when the power unit is stopped, thereby achieving the self-locking effect.

Furthermore, when the rope take-up device needs to be reversely rotated,

only the power unit needs to be reversely rotated, and gaps will then be

generated between the friction ring and the first friction plate and second

friction plate positioned at the two sides of the friction ring to release the brake

state so that the rope take-up device can still be reversely rotated.

The above housing allows the power unit, transmission gear, brake gear,

drive rod, friction ring, first friction plate, second friction plate, one-way

bearing and first bearing to be protected, preventing them from being exposed

to the outside, and the transmission gear and brake gear in engagement with

each other in the above reducer allows the rotating speed of the power unit to

be decreased and the torque to be increased, thereby assisting the rope take-up

device to rotate and wind up the steel rope hung with a heavy object in a slow

speed. In addition, the configurations of the first bearing and second bearing

are used to reduce the friction loss between the drive rod and housing and

between the drive rod and seat, further increase the overall transmission

efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG 1 is a perspective view of a preferred embodiment of the present

invention;

FIG 2 is an exploded view of the embodiment of the present invention;

FIG 3 is a cross-sectional view of the embodiment of the present

invention;

FIG 4 shows the embodiment of the present invention in a rotation state;

FIG 5 shows the embodiment of the present invention in a driving state;

FIG 6 shows the embodiment of the present invention in a self-locking

state;

FIG 7 shows the embodiment of the present invention in a dragging state;

FIG 8 shows the embodiment of the present invention in a hanging state;

FIG 9 is a perspective view of another preferred embodiment of the

present invention;

FIG 10 is an exploded view of the embodiment of the present invention

shown in FIG 9; and

FIG 11 is a cross-sectional view of the embodiment of the present

invention shown in FIG 9.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Refeming to FIGS. 1 to 3, an electric winch structure of the present

invention includes:

a power unit 1;

a reducer 2, in connection with the power unit 1, and including at least

one transmission gear 21 adjacent to the power unit 1, a brake gear 22 in

engagement with the transmission gear 21, and a housing 23 adapted to

accommodate the transmission gear 21 and brake gear 22;

a drive rod 3, in connection with the brake gear 22;

a seat 4, in connection with the housing 23, the drive rod 3 passed through

the seat 4;

a friction ring 31, configured on the drive rod 3 and positioned between

the brake gear 22 and seat 4;

a first friction plate 221, positioned at one side of the friction ring 31, and

positioned between friction ring 31 and brake gear 22, and the first friction

plate 221 configured on said brake gear 22;

a second friction plate 32, positioned at one side of the friction ring 31

away from the first friction plate 221, and positioned between the friction ring

31 and seat 4, and the second friction plate 32 configured on the drive rod 3; a one-way bearing 33, configured on the friction ring 31, and positioned between the first friction plate 221 and second friction plate 32; a first bearing 34, configured on the drive rod 3, and positioned between the first friction plate 221 and seat 4; a second bearing 35, configured on the drive rod 3, and propositioned in the seat 4, the housing 23 accommodating the drive rod 3, friction ring 31, first friction plate 221, second friction plate 32, one-way bearing 33, and first bearing 34 therein; and a rope take-up device 5, configured on one side of the seat 4 away from the reducer 2, and the drive rod 3 partially penetrating the rope take-up device

5 and in combination with the rope take-up device 5.

Furthermore, the drive rod 3 is in connection with the brake gear 22

through a coupling screw 36 and first washer 37, where the coupling screw 36

is screwed on one end of the drive rod 3 adjacent to the brake gear 22, and one

side of the first washer 37 is pressed against the brake gear 22, and another

side thereof the coupling screw 36.

Preferably, the housing 23 includes a first housing body 231 and a second

housing body 232 coupled correspondingly to the first housing body 231, and

the combination way of the first housing body 231 and second housing body

232 takes screw locking as an example.

Preferably, the number of the transmission gears 21 takes five as an

example.

Preferably, the power unit 1 is a motor.

Preferably, the reduce 2 is a gear reducer.

Preferably, the drive rod 3 is in connection with the brake gear 22 in a

connection way that takes the drive rod 3 being screwed in the brake gear 22

as an example.

Preferably, both the first friction plate 221 and second friction plate 32 are

copper washers for example.

From the above description, the technical structure of the present

invention can be understood very well. With the corresponding cooperation

of this structure, the overall transmission efficiency can be increased, and

self-locking effect generated, the detail will be described as the following.

Referring to FIGS. 1 to 8, the transmission gear 21 in connection with the

power unit 1 will also be turned and the power is then transmitted to the brake

gear 22 in engagement with the transmission gear 21 after the power unit 1 is

started to turn; the brake gear 22 will drive the drive rod 3 to turn through the

structure thereof screwed on the drive rod 3. In the embodiment, if along the

axial center of the drive rod 3 and viewed in a direction from the rope take-up

device 5 toward the reducer 2, the drive rod 3 is counterclockwise turned for example, the friction ring 31, second friction plate 32, first bearing 34, second bearing 35 configured on the drive rod 3, the brake gear 22 screwed on the drive rod 3, the first friction plate 221 configured on the brake gear 22, the one-way bearing 33 configured on the friction ring 31, and the rope take-up device 5 in connection with the drive rod 3 are also be counterclockwise rotated.

The rope take-up device 5 further has a steel rope 51 adapted to hang a

heavy object, so that the drive rod 3 is driven to turn through the power unit 1,

and the rope take-up device 5 is further caused to turn together with it.

thereafter, the steel rope 51 located on the rope take-up device 5 can be wound

up, thereby the heavy object hung on the steel rope 5 can be lifted or dragged

vertically.

The moment when the power unit 1 is stopped, the friction ring 31

configured on the drive rod 3 will be engaged on the one-way bearing 33 to

cause the one-way bearing 33 to stop rotating and thus lock the brake gear 22

with the structural design of one-way rotation of the one-way bearing 33 itself

When the brake gear 22 is stopped, it will generate a pull force to the drive rod

3 through the structure of the drive rod 3 screwed on the brake gear 22, forcing

the drive rod 3 to be locked too. Furthermore, the first friction plate 221 and

second friction plate 32 respectively positioned on the two sides of the friction ring 31 will pinch and squeeze the drive rod 3 at the same time when the friction ring 31 is engaged with the one-way bearing 33, thereby assisting the drive rod 3 to stop rotating so as to prevent the rope take-up device 5 from being reversed by the drag of the steel rope 51 at the moment when the power unit 1 is stopped, thereby achieving a self-locking effect and improving the overall safety.

Furthermore, when the rope take-up device 5 is required to perform

reverse rotation, only the power unit 1 needs to be rotated in the reverse

direction. As described above, the transmission gear 21, brake gear 22, drive

rod 3 and rope take-up device 5 are driven in sequence. When the drive rod

3 is driven to rotate, gaps between the friction ring 31 configured on drive rod

3 and the first friction plate 221 and second friction plate 32 positioned at the

two sides of the friction ring 31 will be generated so as to release the original

brake state of the reverse rotation, and further allow the rope take-up device 5

to be still reversely rotated. The self-locking design of the present invention is

in that the self-locking effect can be achieved when the power unit 1 is stopped,

so that the power unit 1 performing the forward and reverse rotation to drive

the drive rod 3 to rotate forward and reverse is not affected.

The above housing 23 is adapted to accommodate and protect the

transmission gear 21, brake gear 22, drive rod 3, friction ring 31, first friction plate 221, second friction plate 32, one-way bearing 33 and first bearing 34, thereby preventing them from exposing to the outside to cause danger in use.

The above transmission gear 21 and brake gear 22 engaged with each other in

the reducer 2 are used to reduce the rotating speed of the power unit 1 and

increase the torque, thereby allowing the rope take-up device 5 to rotate and

wind the steel rope 51 hung with a heavy object more slowly. In addition,

the first bearing 34 and second bearing 35 are used to reduce the friction loss

between the drive rod 3 and housing 23, and the drive rod 3 and seat 4, and

further increasing the overall transmission efficiency.

The housing 23 can be detached into the first outer housing body 231 and

second outer housing body 232, allowing a user to repair, replace and maintain

the transmission gear 21 and brake gear 22 in the housing 23, thereby

extending the service life of the present invention.

The above seat 4 is used to make the present invention stand stably. In

addition, the structure combining the coupling screw 36 with the first washer

37 allows the drive rod 3 to be stably combined with the brake gear 22, and

prevents the drive rod 3 from being rotated out from one side of the brake gear

22 in action.

FIG 7 shows the present invention used in the towing ofjeep, and FIG 8

in the suspension structure of crane. The above applications of the present

invention are only for example, the present invention is not so limited.

Referring to FIGS. 9 to 11, showing another preferred embodiment of the

present invention, the present embodiment is almost the same as the above

embodiment, and the differences between them are in that: in the present

embodiment, a second washer 38a is provided between the first washer 37a

and brake gear 22a; the first housing body 231a is provided with at least one

detaching portion 2311a; the second housing body 232a has at least one

second detaching portion 2321a; one side of the drive rod 3a adjacent to the

rope take-up device 5a is provided with a rod combining groove 39a; the

inside of the rope tale-up device 5a has a take-up combining groove 52a

positioned correspondingly to the rod combining groove 39a; the drive rod 3a

and rope take-up device 5a are connected with each other by engaging an

engagement element 6a in the rod combining groove 39a and the take-up

combining groove 52a; the rope take-up device 5a is further provided with at

least one indication portion 52a and an auxiliary rope take-up hole 54a; and

the seat 4a has at least one seat combining portion 41a. in addition, the brake

gear 22a is configured with a stopper 222a, and the stopper 222a is positioned

on one side of the first friction plate 221a away from the friction ring 31a.

Preferably, the first detaching portion 2231a and second detaching portion

2321a are arc-shaped grooves for example, and the first detaching portion

2311a and second detaching portion 2321a respectively number two, and are

respectively positioned on the upper and lower sides of the first housing body

231a and the upper and lower sides of the second housing body 232a.

Preferably, the indication portion 53a takes turning patterns stamped on

the end surface of the rope take-up device 5a as an example, and patters

number two.

Preferably, the seat combining portion 41a takes through holes positioned

on the bottom side of seat 4a as an example, and the through holes number

two.

Preferably, the auxiliary take-up hole 54a is positioned on one side of the

indication portion 53a for example.

Preferably, the stopper 222a is an oil seal.

The structure of the second washer 38a can cooperate with the first

washer 37a and the coupling screw 36a to make the brake gear 22a and the

drive rod 3a more firmly combined, thereby improving the overall structural

strength.

The structures of the first detaching portion 2311 and second detaching

portion 2321a can assist a user to detach the housing 23a, thereby allowing the user to detach the housing 23a easily into the first housing body 231a and second housing body 232a.

The structure of the engagement element 6a in engagement with the rod

combining groove 39a and take-up combining groove 52a increases the

combination strength of the drive rod 3 and rope take-up device 5a, and further

ensures that when the drive rod 3a is driven to rotate, the take-up device 5a

will rotate with it, and when the drive rod 3a is driven to stop, the take-up

device 5a will stop with it.

The structure of the above indication portion 53a allows users to clearly

understand wheat is the turning direction when the present invention is

generally used.

In addition, users can pass a steel rope through the auxiliary take-up hole

54a, thereby assisting the users to collect and retain the steel rope, thereby

increasing the overall use convenience.

The structure of the above seat combining portion 41a allows users to

lock the seat 4a to a device needing to be used only through screws so as to

make the present invention stably combined with the device, and further

prevent the seat 4a from sliding during action.

When a user lubricates the one-way bearing 33a, first bearing 34a or

second bearing 35a, the lubricant can be blocked by the structure of the stopper 222a, thereby maintaining the cleanness of the present invention, and further increasing the overall service life.

Claims

I CLAIM:

1. An electric winch structure, comprising:

a power unit;

a reducer, in connection with said power unit, and comprising at least

one transmission gear adjacent to said power unit, a brake gear in

engagement with said transmission gear, and a housing

accommodating said transmission gear and brake gear;

a drive rod, in connection with said brake gear;

a seat, in connection with said housing, said drive rod passed through

said seat;

a friction ring, configured on said drive rod, and positioned between

said brake gear and seat;

a first friction plate, positioned at one side of said friction ring, and

positioned between said friction ring and brake gear, said first friction

plate provided on said brake gear;

a second friction plate, positioned at one side of said friction ring

away from said first friction plate, and positioned between said

friction ring and seat, said second friction plate configured on said

drive rod; a one-way bearing, provided on said friction ring, and positioned between said first friction plate and second friction plate; a first bearing, configured on said drive rod, and positioned between said first friction plate and seat; a second bearing, configured on said drive rod, and positioned in said seat, said housing accommodating said drive rod, friction ring, first friction plate, second friction plate, one-way bearing and first bearing; and a rope take-up device, configured on one side of said seat away from said reducer, said drive rod partially penetrating said take-up device and in combination with said rope take-up device.

2. The structure according to claim 1, wherein said drive rod is in

connection with said brake gear through a coupling screw and first

washer, said coupling screw is screwed on one end of said drive rod

adjacent to said brake gear, one side of said first washer is pressed

against said brake gear, another side thereof said coupling screw, and

a second washer is provided between said first washer and brake

gear.

3. The structure according to claim 1, wherein said housing has a first

housing body and a second housing body correspondingly combined with said first housing body, said first housing body is provided with at least one first detaching portion, and said second housing body at least one second detaching portion positioned correspondingly to said first detaching portion.

4. The structure according to claim 1, wherein one side of said drive rod

adjacent to said rope take-up device is provided with a rod combining

grove, an inside of said rope take-up device a take-up combining

groove positioned correspondingly to said rod combining groove,

and said drive rod and rope take-up device are connected to each

other by engaging an engagement element in said rod combining

groove and take-up combining groove.

5. The structure according to claim 1, wherein said brake gear is

provided with a stopper, and said stopper is positioned on one side of

said first friction plate away from said friction ring.