KR101893760B1 - Winch for Floodgate - Google Patents

Abstract

The present invention relates to a winch for a floodgate, capable of being electrically/manually operated without an electric/manual switchover lever through a cam and a worm gear set, and quickly closing the floodgate in a state of allowing only manual operation. According to the present invention, the winch for a floodgate comprises: a free falling means including a falling shaft, the cam disposed and fixed to one side of the falling shaft, a cam roller disposed on a side part of the cam to be interlocked with the cam, a falling lever coupled to the cam, and a falling case to receive the cam and the cam roller therein; an electric unit including a hollow first electric shaft concentrically installed to the outside of the falling shaft through a bearing, an electric worm wheel fixed to the first electric shaft, an electric worm engaged with the electric worm wheel and connected to a motor, a multi-plate clutch fixed to one side of the first electric clutch, and a second electric shaft connected to the outside of the multi-plate clutch; a manual unit including a manual worm connected to a manual operation handle and a manual worm wheel engaged with the manual worm; and a planetary gear set including a sun gear axially coupled to the other side of the second electric shaft, a plurality of planetary gears engaged with the sun gear, a ring gear forming a concentric circle with the sun gear and engaged with the planetary gears, a planetary gear case coupled to the ring gear and axially coupled to the second electric shaft through a bearing, a carrier to support the planetary gears, a rotary shaft connected to the carrier, and a driving gear axially coupled to the rotary shaft to transfer rotational force to a driven unit; and a brake unit including a centrifugal brake disposed on one end of the rotary shaft.

Description

{Winch for Floodgate}

More particularly, the present invention relates to a winch winch for a watercraft, and more particularly, to a winch winch for a watercraft capable of operating an electric / manual operation without an electric / manual conversion lever through a cam and a worm gear set, .

Generally, for river and reservoir, water flow structure is installed for more effective flow control and water management, and water gate and water gate opening and closing winch are installed here.

In recent years, besides the normal operation mode for starting the motor through the motor, the winch for the scooter also has an emergency operation mode that can open and close the gate with manpower for disaster or repair work.

To this end, the drive shaft of the win- dow is equipped with an electric / manual conversion lever which can be operated by a clutch and a clutch to select between electric operation and manual operation.

However, the conventional winch has a limitation in that it can not be switched from manual operation to electric operation by remote control from a remote place such as a control room, when the operator is left in a manual operation state in the field of waterworks structures.

In addition, in the event of a flood or other disaster, the motor may fail or the power supply may be cut off due to insufficient operation. In such a special situation, there may be a situation where the water gate must be closed manually. In the manual operation, A decelerating means is additionally provided and the descending speed is very slow, which makes it difficult to close the water gate quickly.

KR 10-0799351 B1 2008.01.30.

A problem to be solved by the present invention is to provide a motor control device capable of operating an electric / manual operation without an electric / manual conversion lever and preventing interference between a motor-operated component and a manual-operation component during such motor / And to provide a winch for a watercraft which can quickly close the watercourse even in a possible state.

In order to solve the above problems, the present invention provides a handwheel for a handrail comprising a descending shaft, a cam provided on one side of the descending shaft, a cam roller provided on a side of the cam and interacting with the cam, Descending means including a descending lever, and a descending case for accommodating the cam and cam roller therein; A hollow worm wheel fixed to the first motor shaft, a motor worm gear-coupled to the motor worm wheel and connected to the motor, a second motor shaft rotatably connected to the first motor shaft, A transmission unit including a multi-plate clutch fixed to one side of the transmission shaft, and a second transmission shaft connected to an output side of the multi-plate clutch; A manual unit comprising a manual worm connected to a manual operation handle and a manual worm wheel engaged with the manual worm; A plurality of planetary gears meshing with the sun gear, a ring gear concentrically formed with the sun gear and meshing with the plurality of planetary gears, a ring gear coupled to the ring gear, 2 planetary gear case axially coupled to the electric shaft, a carrier for supporting the plurality of planetary gears, a rotating shaft connected to the carrier, and a driving gear axially coupled to the rotating shaft and transmitting rotational force to the driven shaft A gear unit; And a brake unit including a centrifugal brake provided at one end of the rotating shaft.

The winder for a handrail of the present invention is characterized in that the cam includes a cam body, a plurality of inclined surfaces protruding from one horizontal surface of the cam body, and a coupling groove formed on the circumferential surface of the cam body to fasten the descending lever .

The clutch winch for a handlebar according to the present invention may further comprise a clutch hub fixed to the outer circumferential surface of the first transmission shaft, a clutch retainer installed radially outwardly of the clutch hub and axially coupled to one end of the second transmission shaft, A clutch disc and a clutch plate provided at a coupling portion between the clutch hub and the clutch retainer, a plurality of pressure springs for pressing the clutch disc and the clutch plate, a pressing spring fixed to the outer circumferential surface of the first motor shaft, And a support plate elastically supported on the support plate.

The other end of the drop shaft is engaged with the clutch hub via a bearing, and the other end of the drop shaft is welded and fixed by being engaged with a collar.

According to the present invention, there is provided a winder for a handrail, comprising: a free lowering means provided with a cam; a transmission unit including a worm gear set connected to an electric motor and a multi-plate clutch connected to a worm gear set; a passive unit comprising a worm gear set connected to a manual operation handle; It is possible to perform the electric / manual operation without the electric / manual conversion lever through the planetary gear unit including the sun gear connected to the worm gear set of the electric unit and the ring gear connected with the worm gear set of the manual unit, The water gate can be quickly closed, thereby improving the water management efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing a winch for a handrail according to the present invention; FIG.
2 is a cross-sectional view showing a main part showing a hoist for a handrail according to the present invention;
3 is a partially enlarged cross-sectional view of the multi-plate clutch of the hoist for a handrail according to the present invention.
FIG. 4 is a plan view of a free lowering means cam of a hoist for a handrail according to the present invention, FIG. 4 (b) is a sectional view taken along line A-A ', and FIG.
5 is a plan view showing a mounting structure of a cam roller of a winder for a handrail according to the present invention.
6 is a cross-sectional view showing the essential parts of the planetary gear unit of the hoist for a handrail according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view showing a hoist for a handrail according to the present invention, FIG. 2 is a cross-sectional view showing a main part showing a hoist for a handrail according to the present invention, (A) is a plan view, (b) is a cross-sectional view taken along the line A-A ', (c) is a perspective view, and Figure 5 is a perspective view showing the free descending means cam of the wind- 6 is a cross-sectional view of a planetary gear unit main body of a winder for a handrail according to the present invention.

1 to 5, the present invention relates to a water treatment system comprising a free descending means 10 for allowing a water gate to be closed quickly, a transmission unit 20 for inputting a rotational force of a motor, a passive unit 30 for inputting a work force of a worker, A planetary gear unit 40 for transmitting a rotational force or a pulling force to the driven portion, and a brake unit 50 for rapid and stable water descending.

Here, the driven portion includes a hydrostatic elevator (rack gear or the like) connected to the gear box A and the gear box A.

The free lowering means 10 includes a descending shaft 11, a cam 13 provided on one side of the descending shaft 11 and fixed to the cam 13, A cam roller 15 provided on the side of the cam 13 and interacting with the cam 13, a descending lever 17 coupled to the cam 13, And a lower case (19).

4, the cam 13 includes a flat cylindrical cam body 13a, a plurality of inclined surfaces 13b protruding from one horizontal surface of the cam body 13a and formed in a substantially right-angled triangle in cross section, And a fastening groove 13c formed on the circumferential surface of the cam body 13a to fasten the downward lever 15.

2 and 5, the cam roller 15 is rotatably coupled to a support disc 15a fixed to the inside of the case 16 and includes a plurality of roller balls 15a formed on the support disc 15a, (15b), and the cam roller shaft (15c) is fitted in the center thereof.

In the free descending means 10, a part of the constitution of a transmission unit 20 to be described later is fixed. In the state where only the manual operation is possible as described above, when a rapid closing of the sluice gate is required, The details will be described later.

The transmission unit 20 is configured to receive a rotational force from the electric motor and transmit the rotational force to the sun gear 41 of the planetary gear unit 40. The transmission unit 20 includes a hollow shaft 1 electric motor shaft 21 and an electric worm wheel 22 fixed to the first electric motor shaft 21, an electric worm 23 connected to the electric motor by gearing with the electric worm wheel 22, A multi-plate clutch 25 fixed to one side, and a second transmission shaft 26 connected and fixed to the output side of the multi-plate clutch 25. [

The multi-plate clutch 25 includes a clutch hub 25a fixed to the outer circumferential surface of the first transmission shaft 21, a clutch hub 25b axially coupled to one end of the second transmission shaft 26, The clutch retainer 25b includes a clutch disc 25c and a clutch plate 25c provided at a coupling portion between the clutch hub 25a and the clutch retainer 25b and a plurality of pressure springs 25d And a support plate 25e which is fixed to the outer peripheral surface of the first transmission shaft 21 and elastically supports the pressure spring 25d between the clutch hub 25a and the second transmission shaft 26, (25) to the planetary gear unit (40).

The other end of the descending shaft 11 is engaged with the clutch hub 25a via a bearing and the other end of the descending shaft 11 protrudes out of the bearing in the axial direction, Are welded and fixed.

The manual unit 30 is composed of a manual worm 31 and a manual worm wheel 32 engaged with the manual worm 31.

The manually operated worm wheel 32 is fixed to the planetary gear case 41 of the following planetary gear unit 40 so that the manual worm wheel 32 can be manually operated The rotation of the ring gear 43 connected to the planetary gear case 41 causes the lifting and lowering of the watercraft to be carried out, which will be described later in detail.

The planetary gear unit 40 includes a sun gear 41 that is axially coupled to the other end of the second transmission shaft 26, a plurality of planetary gears 42 that engage with the sun gear 41, A ring gear 43 engaged with the planetary gear 42, a planetary gear case 44 coupled to the ring gear 43 and axially coupled to the second transmission shaft 26 via a bearing, a plurality of planetary gears 42 A rotating shaft 46 connected to the carrier 45 and a driving gear 47 axially coupled to the rotating shaft 46 and transmitting rotational force to the driven portion.

The driving gear 47 meshes with the gear of the gear box A to transmit the rotational force of the motor or gravitational force applied from the rotating shaft 45 to the gear box A and the rotational force transmitted to the gear box A The elevating mechanism is driven to lift and lower the water gate.

The planetary gear 42, the carrier 45, and the rotary shaft 46 are rotated by rotating the sun gear 41, which is rotationally coupled to the other end of the second transmission shaft 26 via the transmission unit 20, The driving gear 47 is rotated, so that the lifting and lowering of the water gate can be performed by the electric driving operation.

At this time, since the ring gear 43 is stopped by the self-locking function of the manual worm 31 and the manual worm wheel 32, the rotational force is output through the carrier 45 do.

When the operator operates the manual operation handle B, the manual worm wheel 32, the planetary gear case 41 fixed to the manual worm wheel 32, and the planetary gear case 41 coupled to the planetary gear case 4 So that the planetary gear 45 and the drive gear 47 are rotated to thereby lift and lower the watercraft by manual operation.

Since the deceleration is performed in the course of transmitting the rotational force from the ring gear 43 to the planetary gear 42, the water gate can be raised and lowered by gravity as described above. However, since the speed of the water gate is very slow, The water gate can be quickly lowered, as will be described later.

On the other hand, when interference occurs between the sun gear 41 and the planetary gear 45 when the ring gear 43 rotates, or when the sun gear 41 rotates when the ring gear 43 and the planetary gear 45 rotate, The worm wheel can not drive the worm, but the sun gear 41 can rotate the worm 21 in the opposite direction to the worm wheel, The above-mentioned interference is prevented through the kinematic relationship that the ring gear 43 does not drive the manual worm 31.

Therefore, in the present invention, since the electric / manual conversion lever provided in the existing winch is not required, when the electric / manual conversion lever as described above is put in the manual operation state, The problem of becoming impossible is fundamentally solved.

The brake unit 50 includes a centrifugal brake provided at one end of the rotary shaft 45 and is configured to adjust the descending speed of the water gate when the water gate descends freely.

The worm gear sets 22 and 23 of the power transmission unit 20 and the worm gear sets 22 and 23 of the power transmission unit 20 are connected to each other via the free descending means 10, Free fall is prevented through the anti-reverse function of the worm gear sets 31 and 32 of the passive unit 30. Releasing this reverse prevention state can quickly lower the gate.

2, 4, and 5, when the operator rotates the drop lever 15, the cam 13 rotates and the inclined surface 13b protrudes from one horizontal surface of the cam body 13a, The cam roller 15 is brought into contact with the roller 15 so as to be rotatably engaged with the supporting disc 15a fixed inside the descending case 19 so that the relative movement of the cam 13 and the cam roller 15 The descending shaft 11 fixed to the cam 13 moves in the left direction x.

Since the collar 12 is welded and fixed to the other end of the descending shaft 11, when the descending shaft 11 is moved in the left direction x, the clutch hub 25a also moves in the left direction, The connection of the worm gear sets 22 and 23 of the electric power unit 20 and the second electric motor shaft 26 is disconnected due to the disengagement of the clutch of the multi-plate clutch 25 due to the loss of the pressing force, The rapid descent of the water can be achieved through the rotation of the idle portion, the drive gear 47, the planetary gear 42 and the sun gear 41. [

Of course, when the operator releases the operation of the manual operation handle B, the restoring force of the pressure spring 25d restores the original position where the multi-plate clutch 25 can transmit the rotational force, The reversing prevention function of the sets 22 and 23 and the worm gear sets 31 and 32 of the manual unit 30 is activated again to stop the descent of the water gate.

However, since it is very difficult for an operator to operate the manual operation handle B while confirming the degree of descent of the water gate, it is necessary for the operator to complete the descent of the water gate only by the operation of the manual operation handle B.

In this case, if the descending speed of the water gate is excessive, an accident such as a water gate damage may occur due to an impact when the water gate is closed. To prevent this, a centrifugal brake is provided at the end of the rotating shaft 45, When the rotation speed is exceeded, the centrifugal brakes are operated to lower the rotation speed of the rotary shaft 45, so that the descending speed of the water can be lowered, so that the water gate can be lowered quickly and stably.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: free falling means
11: drop shaft 12: collar
13: cam 15: cam roller
17: Lowering lever 19: Lowering case
20: Electric power unit
21: first electric shaft 22: electric worm wheel
23: electric worm 24: pressure spring
25: multi-plate clutch 26: second electric shaft
30: Manual unit
31: manual worm 32: manual worm wheel
40: Planetary gear unit
41: sun gear 42: planetary gear
43: ring gear 44: planetary gear case
45: carrier 46: rotating shaft
47: drive gear
50: Brake unit

Claims (4)

A cam 13 fixed to one side of the drop shaft 11; a cam roller 15 provided on a side of the cam 13 to interact with the cam 13; Free descending means (10) comprising a descending lever (17) coupled to the cam (13) and a descending case (19) for receiving the cam (13) and the cam roller (15) therein;
A hollow first power transmission shaft 21 provided concentrically with the outside of the drop shaft 11 via a bearing, an electric worm wheel 22 fixed to the first electric motor shaft 21, an electric worm wheel 22 (25) coupled to an output side of the multi-plate clutch (25) and a second electric motor shaft (23) connected to an output side of the multi-plate clutch (25) (20) including a motor (26);
A manual unit (30) comprising a manual worm (31) connected to a manual operation handle (B) and a manual worm wheel (32) engaged with the manual worm (31);
A plurality of planetary gears 42 that are concentric with the sun gear 41 and a plurality of sun gears 41 that are axially coupled to the other end of the second transmission shaft 26, A planetary gear case 44 which is coupled to the ring gear 43 and is axially coupled to the second transmission shaft 26 via a bearing, a plurality of planetary gears 42 And a planetary gear unit including a carrier (45) supporting the carrier (45), a rotation shaft (46) connected to the carrier (45), and a drive gear (47) axially coupled to the rotation shaft (40); And
And a brake unit (50) including a centrifugal brake provided at one end of the rotating shaft (46)
The cam 13 includes a cam body 13a, a plurality of inclined surfaces 13b protruding from one horizontal surface of the cam body 13a, and a plurality of inclined surfaces 13b formed on the circumferential surface of the cam body 13a, And a fastening groove (13c) to be fastened to the handle (13c).
delete The method according to claim 1,
The multi-plate clutch 25 includes a clutch hub 25a fixed to the outer circumferential surface of the first transmission shaft 21, a clutch hub 25b disposed radially outwardly of the clutch hub 25a and axially coupled to one end of the second transmission shaft 26, A clutch disc 25 and a clutch plate 25c provided at a coupling portion between the clutch hub 25a and the clutch retainer 25b and a plurality of pressurizing members 25a and 25b for pressing the clutch disc 25 and the clutch plate 25c, , A spring (25d), and a support plate (25e) fixed to the outer peripheral surface of the first transmission shaft (21) and elastically supporting the pressure spring (25d) with the clutch hub (25a).
The method of claim 3,
Characterized in that the other side of the descending shaft (11) is coupled to the clutch hub (25a) via a bearing and the other end of the descending shaft (11) is welded and fixed by being engaged with a collar (12) windlass.

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