KR101598862B1

KR101598862B1 - Bilateral opening and closing reducer

Info

Publication number: KR101598862B1
Application number: KR1020150050297A
Authority: KR
Inventors: 주석철
Original assignee: 주식회사 신명베벨감속기
Priority date: 2015-04-09
Filing date: 2015-04-09
Publication date: 2016-03-02

Abstract

The present invention provides a dual axis openable / closable opening and closing type reducer which is capable of easily releasing coupling coupling in the interior of a speed reducer not only outdoors in a power failure, but also to prevent an interior operator from opening the door to be isolated.
According to a preferred embodiment of the present invention, there is provided a biaxial opening / closing type speed reducer including a gear box body, a bearing housing coupled to the gearbox body, a gear box having a gearbox body and an oil chamber formed therein by a bearing housing; A worm shaft rotatably supported on the gear box and having a worm wheel; A door drive shaft disposed in a direction perpendicular to the worm axis and rotatably supported by the gear box and having through holes for pin engagement; A worm gear rotatably inserted into the door driving shaft to engage with the worm wheel and having a coupling tooth formed in a circumferential direction on one side thereof; A coupling having a movable tooth which is splined to the door drive shaft so as to be linearly movable only in the axial direction and disposed on one side of the worm gear and which is engaged and disengaged by the coupling tooth; A coupling engaging pin positioned radially in the coupling and positioned in the pin coupling hole to limit the movement range of the coupling in the door drive shaft; A spring support plate fixedly coupled to the door drive shaft and disposed at one side of the coupling; A plurality of coupling springs interposed between the spring support plate and the coupling to push the coupling toward the worm gear side by an elastic force to couple the movable tooth to the coupling tooth; A coupling releasing operation pin inserted into one end of the door driving shaft so as to be freely movable in an axial direction and having a tip end in contact with the coupling engaging pin; A first coupling operation shaft that is threadedly coupled to one end of the door drive shaft and moves and releases the coupling release pin according to the rotation direction to connect and disconnect the coupling and the tooth coupling of the worm gear; A second coupling operation shaft inserted into the other end of the door drive shaft so as to be movable in an axial direction and connected to the coupling coupling pin through a slot so as to connect and disconnect the coupling between the coupling and the tooth- .

Description

[0001] The present invention relates to a bilateral opening and closing reducer,

The present invention relates to an opening and closing speed reducer, and more particularly, to a decelerator for opening and closing, which is capable of easily releasing a coupling in a decelerator not only outdoors in a room, but also in a room, To an openable / closable speed reducer.

Generally, a decelerator using a helical worm gear is advantageous under high load and is highly efficient because the rotation output is obtained by reducing the rotation of the motor. Therefore, these reducers are applied to the relatively heavy weight hangar doors, ammunition doors, large warehouses and the like as opening / closing devices.

On the other hand, the door to which the speed reducer is applied is automatically performed through driving control of the driving motor. However, if a power failure occurs, the drive motor is stopped and the door can not be manually opened by the helical worm gear type speed reducer. In this case, when a worker works indoors, there is a serious problem that the worker gets stuck in the room until power is supplied again.

To solve this problem, Korean Patent Laid-Open Publication No. 10-2010-0111078 (geared speed reducer having a manual conversion lever) has been proposed as a background technology of the present invention. This allows the operator to manually open and close the large door by urging the operator to move the manual type conversion lever formed on the worm wheel output shaft back and forth in the axial direction to separate the clutch.

However, in the above background art, it is a single-shaft type that can be operated only at a place where the conversion lever is located. If the conversion lever is installed on the outdoor side, there is no way to operate it on the indoor side, .

Korean Patent Laid-Open No. 10-2010-0111078 (geared speed reducer having a manual conversion lever) (2010.10.14)

Accordingly, it is an object of the present invention to provide a double-axis openable / closable opening / closing type speed reducer capable of easily releasing coupling coupling in a reduction gear unit not only outdoors during a power failure but also in a room, It has its purpose.

According to a preferred embodiment of the present invention, there is provided a double-

A gearbox body, a gearbox body having a bearing housing housed in the gearbox body, a gearbox body having an oil chamber formed therein by a bearing housing,

A worm shaft rotatably supported on the gear box and having a worm wheel;

A door drive shaft disposed in a direction perpendicular to the worm axis and rotatably supported by the gear box and having through holes for pin engagement;

A worm gear rotatably inserted into the door driving shaft to engage with the worm wheel and having a coupling tooth formed in a circumferential direction on one side thereof;

A coupling having a movable tooth that is splined to the door drive shaft so as to be linearly movable only in the axial direction and disposed on one side of the worm gear and engaged with and disengaged from the coupling tooth;

A coupling engaging pin positioned radially in the coupling and positioned in the pin coupling hole to limit the movement range of the coupling in the door drive shaft;

A spring support plate fixedly coupled to the door drive shaft and disposed at one side of the coupling;

A plurality of coupling springs interposed between the spring support plate and the coupling to push the coupling toward the worm gear side by an elastic force to couple the movable tooth to the coupling tooth;

A coupling releasing operation pin inserted into one end of the door driving shaft so as to be freely movable in an axial direction and having a tip end in contact with the coupling engaging pin;

A first coupling operation shaft that is threadedly coupled to one end of the door drive shaft and moves and releases the coupling release pin according to the rotation direction to connect and disconnect the coupling and the tooth coupling of the worm gear;

A second coupling operation shaft inserted into the other end of the door drive shaft so as to be movable in an axial direction and connected to the coupling coupling pin through a slot so as to connect and disconnect the coupling between the coupling and the tooth- .

The first coupling operation shaft may include a threaded portion that is threadedly engaged with the door drive shaft at one end and a first operation handle for rotation opening and closing at the other end,

At the same time, the first coupling operation shaft is inserted into the oil-tight cap screwed to the door drive shaft and rotated.

The second coupling operation shaft has an elongated hole at one end and a constant-section threaded portion at the other end, and the threaded portion is provided with a second opening / closing rotary operation nut for connecting / disengaging the coupling between the coupling and the tooth- And a reaction force ring fixed to the door driving shaft (16) by inserting a screw portion of the second coupling operation shaft and in surface contact with the rotary operation nut for second opening and closing is installed .

According to the dual axis opening / closing speed reducer of the present invention, since the first coupling operation shaft and the second coupling operation shaft are provided on both sides of the door drive shaft, only one of them is operated during power failure, So that the door can be manually opened indoors as well as indoors. Therefore, it is possible to prevent the worker from being isolated from the room when a power failure occurs.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention, Shall not be construed as limiting.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an assembled cross-sectional view of a dual axis openable / closable type speed reducer according to the present invention, in which a coupling in a steady state in which power is supplied is coupled;
Fig. 2 is a state in which a coupling release is shown through operation of a first coupling operation shaft after a power failure in Fig. 1; Fig.
Fig. 3 is a state in which a coupling release is shown through operation of a second coupling operation shaft after a power failure in Fig. 1; Fig.
FIG. 4 is an exploded perspective view of FIG. 1 except for a gear box; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

1 to 4, reference numeral 12 denotes a gear box of a dual axis open / close type speed reducer.

The gear box 12 includes a gear box main body 121 and bearing housings 122A and 122B which are coupled to the gear box main body 121 so as to face each other and a gear box main body 121 and bearing housings 122A and 122B, And an oil chamber 123 formed in the oil chamber 123. The bearing housings 122A and 122B are fitted with bearings 17A and 17B which rotatably support a door drive shaft 16 to be described later. The oil chamber 123 is filled with an appropriate amount of oil to smooth the engagement of the gears and the movement of various components located therein.

A worm shaft (14) is rotatably supported by the gear box (12). The worm shaft 14 has a worm wheel 141 located in the oil chamber 123. The worm shaft 14 is directly driven by a driving motor (not shown), and is rotationally driven by receiving a rotational force.

And the door drive shaft 16 is disposed in a direction perpendicular to the worm shaft 14 and rotatably supported by the gear box 12. [ The door drive shaft 16 is provided at a predetermined interval from the worm shaft 14 and perpendicular to the upward direction. At this time, the door drive shaft 16 is rotatably installed in the bearing housings 122A and 122B of the gear box 12 through bearings 17A and 17B. The door drive shaft 16 is rotationally driven by receiving a rotational force from the worm shaft 14 when the coupling 20 and the worm gear 18 are coupled to each other. Of course, when the coupling between the coupling 20 and the worm gear 18 is released, the door driving shaft 16 is in a state in which the rotational force is not received, so that the worm shaft 14 can be manually operated even when the worm shaft 14 is stopped or driven. The door driving shaft 16 is capable of transmitting rotational force for opening and closing a door, which is not shown, through a power transmitting means (sprocket, chain) at one end.

The door driving shaft 16 is formed with a spline teeth 161 for linear movement of the coupling 20 to be described later on the outer peripheral surface of a certain section. In the section where the spline teeth 161 are present, a circular fin-connecting hole 16a is formed in the coupling 20 in a radial direction.

And the worm gear 18 is provided on the door drive shaft 16. [ The worm gear 18 is rotatably inserted into the door driving shaft 16. The worm gear 18 is formed with a plurality of coupling teeth 181 on one side in the circumferential direction. The worm gear 18 meshes with the worm wheel 141 of the worm shaft 14. The worm gear 18 has a diameter several times larger than the worm wheel 141. Therefore, the worm gear 18 rotates at a reduced speed interlocking with the rotational driving of the worm shaft 14. [

A coupling (20) is provided to engage and disengage the worm gear (18). The coupling 20 is splined to the spline teeth 161 in a state where the coupling 20 is disposed on one side of the worm gear 18 and is installed so as to be linearly movable only in the axial direction on the door driving shaft 16. [ At this time, the coupling 20 has a plurality of movable teeth 201 which are engaged with and released from the coupling teeth 181 on the worm gear 18 side.

A coupling coupling pin 21 is assembled to the coupling 20. The coupling coupling pin 21 is inserted into the coupling 20 in the radial direction and then placed in the pin coupling hole 16a. Therefore, the coupling coupling pin 21 restricts the movement range of the coupling 20 at the door driving shaft 16.

And the spring support plate 22 is fixedly coupled to the door driving shaft 16. [ The spring support plate 22 is disposed on one side of the coupling 20. A plurality of coupling springs 24 are provided in the circumferential direction between the spring support plate 22 and the coupling 20. The coupling spring 24 serves to push the coupling 20 toward the worm gear 18 with an elastic force and to couple the movable tooth 201 to the coupling tooth 181.

A coupling releasing operation pin 26 is provided at one end of the door driving shaft 16 so as to be freely movably inserted in the axial direction. The coupling releasing operation pin 26 has a length such that its tip is in contact with the coupling coupling pin 21 and the other end can be positioned close to the first coupling operation shaft 28 to be described later.

And a first coupling operation shaft 28 screwed to one end of the door drive shaft 16 is provided. The first coupling operation shaft 28 moves the coupling release operation pin 26 forward and backward in accordance with the rotation operation direction to connect and disconnect the tooth coupling between the coupling 20 and the worm gear 18. The first coupling operation shaft 28 is provided at its one end with a threaded portion 281 screwed to the door drive shaft 16 and at the other end with a first opening and closing rotary operation handle 282. Preferably, the first coupling operation shaft 28 is inserted into the oil-tight cap 32 threadedly coupled to the door drive shaft 16 and installed to be rotated.

Accordingly, when the coupling releasing operation pin 26 moves to the left in FIG. 2 in accordance with the operation direction of the first opening and closing rotary operation handle 282, the coupling engaging pin 21 is pushed to the left to move it, The coupling 20 connected to the pin 21 is disengaged from the worm gear 18. In this state, conversely, when the coupling releasing operation pin 26 moves backward (rightward) in accordance with the reverse operation direction of the first opening and closing rotary operation handle 282, The ring 20 is recombined with the worm gear 18.

And a second coupling operation shaft 30 inserted in the other end of the door drive shaft 16 so as to be movable in the axial direction. The second coupling operation shaft 30 serves to connect and disconnect the tooth coupling between the coupling 20 and the worm gear 18 in accordance with the advancing / retreating movement direction. The second coupling operation shaft 30 has an elongated hole 301 at one end and a coupling coupling pin 21 coupled to the coupling 20 is located in the elongated hole 301.

The second coupling operation shaft 30 is formed with a constant section thread portion 302 at the other end and the screw portion 302 is provided with a screw portion 302 for connecting and disengaging the tooth coupling between the coupling 20 and the worm gear 18, And a rotary operation nut 34 for opening and closing is screwed. The second opening and closing rotary operation nut 34 may be formed in the same shape as the first opening and closing operation handle 282 and screwed to the second coupling operation shaft 30. At this time, a reaction force ring 36 fixed to the door driving shaft 16 through the threaded portion of the second coupling operation shaft 30 may be additionally provided. The reaction force ring (36) provides a sliding supporting surface during operation of the rotation operating nut (34) for second opening and closing.

A description will be given separately of the case where the worm shaft rotates and the case where the worm shaft is rotated automatically when the worm shaft is stopped while the operation of the bidirectional openable type opening and closing gear constructed as described above is automatically rotationally driven.

<With power supply Worm axis Rotational drive>

First, when the worm shaft 14 rotates by a driving motor (not shown), power is supplied from the outside to the driving motor.

1, rotation of the worm shaft 14 is generated, and the worm gear 18 is driven to rotate at a reduced speed in cooperation with the worm wheel 141 of the worm shaft 14 engaged with the worm wheel. At the same time, the coupling 20 is connected to the worm gear 18 by the compression force of the coupling spring 24, so that the door driving shaft 16 rotates interlockingly via the coupling 20.

At this time, the door drive shaft 16 rotates in the forward and reverse directions in accordance with the rotation direction of the worm shaft 14, so that the door (not shown) is opened and closed by receiving the rotational force of the door drive shaft 16. Here, 'door' is not only a middle- or large-sized door applicable to a hangar, an ammunition warehouse, a ship drying room, a warehouse, but also a light-weight door.

Therefore, when the power is supplied, the opening and closing of the door can be automatically realized by the operation of a drive switch (not shown) connected to the drive motor installed inside and outside.

<Power failure Worm axis Manually while stopped door Drive shaft When driving>

On the other hand, the drive motor is stopped when a power failure occurs. Conventionally, when the drive motor is stopped, an operator can not open the door indoors. However, the present invention can manually open the door by manually turning the door drive shaft to disconnect the coupling. This is possible because the coupling of the coupling 20 can be released by operating it outdoors as well as indoors.

First, when a power failure occurs, not only the drive motor is stopped but also the coupling 20 is engaged with the worm gear 18, and the worm gear 18 is in a state of being engaged with the worm wheel 141 in a direction perpendicular to the worm wheel do.

At this time, based on the door, the indoor operator operates the first opening / closing rotary operation handle 282 to release the engagement of the coupling 20, thereby placing the door driving shaft 16 in a no-load state I can open it.

That is, when the coupling releasing operation pin 26 is moved to the left in FIG. 2 in accordance with the operating direction of the first opening and closing rotary operation handle 282 of the first coupling operation shaft 28, 21 to the left so that the coupling 20 connected to the coupling coupling pin 21 is simply released from the worm gear 18. At this time, the coupling spring 24 is compressed.

By thus releasing the engagement of the coupling 20 engaged with the worm gear 18 by operating the first opening and closing rotary operation handle 282, the door driving shaft 16 can be rotated freely, You can open it manually.

When the coupling releasing operation pin 26 moves backward (rightward) in accordance with the reverse operation direction of the first opening and closing rotary operation handle 282, the coupling release spring 24 compresses the coupling 20 are connected to the worm gear 18 again.

On the other hand, the outdoor side operator (manager) can open the door manually by operating the second coupling operation shaft 30 on the basis of the door at the time of power failure.

3, when the coupling 20 is coupled to the worm gear 18, a second opening / closing rotary operation nut (not shown) for connecting / disconnecting the tooth coupling between the coupling 20 and the worm gear 18 34 to open the door.

3, when the second coupling operation shaft 30 is retracted by operating the second opening / closing rotary operation nut 34, the coupling coupling pin 21 is engaged with the elongated hole 301, ) Moves the coupling 20 via the coupling coupling pin 21 so that the coupling between the coupling 20 and the worm gear 18 can be easily released.

Therefore, by releasing the engagement of the coupling 20 only by the operation of the second opening / closing rotary operation nut 34 on the outdoor side, the door driving shaft 16 can be placed in a no-load state (rotation free state) .

Thereafter, when the second opening / closing rotary operation nut 34 is operated in the opposite direction, the coupling 20 is rejoined to the worm gear 18 by the compressive restoring force of the coupling spring 24.

As described above, according to the present invention, the coupling of the coupling can be released by a simple operation not only in the outdoors but also indoors during the power failure, so that the door driving shaft 16 can be rotated freely (unloaded state). Therefore, it is possible not only to prevent dangerous work that the worker who is working in the room in case of power outage gets trapped in the door, but also to open the door in the outdoors so that the indoor worker can be sure whether the worker is safe or not, can do.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

12: Gearbox
14: Worm shaft
16: Door drive shaft
18: Worm Gear
20: Coupling
21: Coupling coupling pin
22: Spring support plate
24: Coupling spring
26: Operation pin for releasing coupling
28: first coupling operation shaft
30: second coupling operation shaft
32: Oil tight cap
34: rotation operating nut for second opening and closing

Claims

Bearing housings 122A and 122B which are coupled to the gear box main body 121 and the gear box main body 121 and an oil chamber 123 formed inside the gear box main body 121 and the bearing housings 122A and 122B A gear box (12) having a gear (12);
A worm shaft (14) rotatably supported on the gear box (12) and having a worm wheel (141);
A door drive shaft (16) arranged in a direction perpendicular to the worm shaft (14) and rotatably supported by the gear box (12) and having a through hole (16a) for pin engagement;
A worm gear 18 rotatably inserted into the door driving shaft 16 so as to be engaged with the worm wheel 141 and having a coupling tooth 181 formed on one side thereof in a circumferential direction;
Is coupled to the coupling teeth (181) by being engaged with the coupling teeth (181) by being spline-coupled to be linearly movable only in the axial direction on the section having the holes (16a) of the door driving shaft (16) A coupling (20) having a movable tooth (201) to be released;
A coupling engaging pin 21 inserted in the coupling 20 in the radial direction and positioned in the pin coupling hole 16a to limit a movement range of the coupling 20 in the door driving shaft 16;
A spring support plate 22 fixedly coupled to the door driving shaft 16 and disposed on one side of the coupling 20;
A plurality of couples (not shown) that are interposed between the spring support plate 22 and the coupling 20 to press the coupling 20 toward the worm gear 18 with elastic force to couple the movable teeth 201 to the coupling teeth 181 A ring spring 24;
A coupling release pin (26) inserted into one end of the door drive shaft (16) so as to be freely movable in the axial direction and having a tip end in contact with the coupling engagement pin (21);
And a second coupling part for coupling and releasing the coupling between the coupling 20 and the worm gear 18 by moving the coupling releasing operation pin 26 in the forward and backward directions according to the rotational direction by being screwed to one end of the door driving shaft 16, A ring operation shaft 28;
And is coupled to the other end of the door driving shaft 16 in the axial direction so as to be connected to the coupling coupling pin 21 through the elongated hole 301 so that the coupling 20 and the worm gear 18 And a second coupling operation shaft (30) connecting and disconnecting the toothed coupling.

The method according to claim 1,
The first coupling operation shaft 28 is provided with a threaded portion 281 which is screwed to the door drive shaft 16 at one end and a rotary operation handle 282 for first opening and closing at the other end,
Wherein the first coupling operation shaft (28) is inserted into an oil-tight cap (32) threadedly coupled to the door drive shaft (16) and rotated.

The method according to claim 1,
The second coupling operation shaft 30 has an elongated hole 301 at one end and a constant-section threaded portion 302 at the other end. The coupling portion 20 and the worm gear 18 And a second opening / closing rotary operation handle is screwed, and the threaded portion of the second coupling operation shaft 30 is inserted into the door, And a reaction force ring (36) fixed to the drive shaft (16) and in surface contact with the second opening / closing rotary operation nut (34) is provided.