JPH11278655A - Turntable device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To preclude a lubricated part of a turntable device from being subjected to the environment and preclude a moment from acting on the output shaft of a speed reducer coupled with the body of the turntable. SOLUTION: A speed reducer 13 is of hermetically sealed type enclosed with a housing 13a, and from it 13a the end of the output shaft 14 is protruded and coupled with the center of revolution of the turntable body 11 through a special joint mechanism. This allows vowing attachment of dust, etc., to lead to easy maintenance works. The joint mechanism has two hinges and is capable of vertical rotation about the hinge part, so that moment is not transmitted to the output shaft 14 which allows performing smooth revolving motions.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turntable device used when a transfer direction of a conveyed object is changed by a transfer facility of a factory.

[0002]

2. Description of the Related Art In a factory or the like, equipment for transporting conveyed articles including products includes various elements such as lifters and conveyors. Among them, there is a turntable device as a device for changing the direction and the conveying direction of a conveyed product by turning motion. This is an apparatus that receives a conveyed object conveyed on a conveyor on a table, turns the entire table using a motor or the like as a power source, turns the conveyed object in an arbitrary direction, and sends the conveyed object to the conveyor again.

[0003] Conventionally used devices include, for example,
There is one shown in FIG. This turntable device 70
Is provided with an annular rail 77 on the floor.
A turntable main body 71 is supported on the upper side via wheels 76 so as to be pivotable. A bush 78 is provided at the center of the back surface of the turntable body 71, and a guide pin 79 rotatably fitted to the bush 78 is provided on the floor.
Is provided.

[0004] A pin rack 75 is provided inside the rail 77 and has a number of pins erected on the floor along the circumferential direction of the rail 77. On the other hand, the turntable body 71 is provided with a pinion 74 that is driven to rotate via a motor 72 and a speed reducer 73 in a vertically downward direction, and the pinion 74 and the pin rack 75 are in mesh with each other.

The turntable device 70 includes a motor 7
When the pinion 74 receiving the driving force from the pinion 2 rotates while meshing with the pin rack 75, the guide pin 79
Is turned around the turning center, and is turned while receiving a vertical load by the wheels 76 and a horizontal load by the guide pins 79.

[0006]

The turntable device 70 as described above has a structure in which lubricated parts such as the pin rack 75 and the pinion 74 are exposed. At the time of use, dust may adhere to the lubricating portion, and smooth operation may be impaired, and maintenance of the lubricating portion requires a great deal of labor. Further, when vibration occurs in the turntable main body 71 at the time of turning or the like, a moment acts on the guide pin 79 at the center of turning, and there is a problem that seizure is easily caused.

[0007] The present invention has been made in view of such circumstances, and prevents dust from adhering even in an environment in which dust and the like are generated, facilitates maintenance, and enables smooth operation even when vibration or the like occurs. The purpose is to enable safe driving.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a turntable main body rotatably supported by wheels and a housing which is covered by a housing on a floor below the turntable main body. And a drive source connected to the speed reducer, the end of the output shaft of the speed reducer protruding from the housing, and the end of the output shaft connected to the turning center of the turntable body. It is characterized by having done.

[0009] In this turntable device, since the speed reducer, which is the lubricating portion, is covered by the housing, it is possible to prevent dust from entering the lubricating portion even when the device is used in an environment where there is much dust.

[0010] A joint mechanism having at least two hinge portions, which is vertically rotatable by a horizontal pin, is provided at a connecting portion between the end of the output shaft and the turntable body,
The joint mechanism has a structure in which both hinges are vertically separated from each other and the horizontal pins are connected in a direction orthogonal to each other, so that a moment does not act on the output shaft. However, a smooth turning operation can be performed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a turntable device according to an embodiment of the present invention will be described with reference to the drawings. In advance,
The entire transfer device using this turntable device will be described with reference to FIGS. The transport device includes a first carry-in conveyor 1, a second carry-in conveyor 2, a receiving conveyor 3
0, a delivery conveyor 5, a turntable device 8 according to the present invention, and an unloading conveyor 6 are arranged and configured in this order.

Each conveyor has a pair of roller rows 1
a, 1b, 2a, 2b, 3a, 3b, 4a, 4b, 5
a, 5b, 6a, 6b, 11a, 11b, and each roller row is provided with a driving motor 9a, 9b, 10a, 10b, 16a,
16b and the like. Further, the first carry-in conveyor 1 and the second carry-in conveyor 2 are arranged so that each of them has a 90-degree relationship with respect to the receiving conveyor 30.

The receiving conveyor 30 is a first carrying-in conveyor 1
And a conveyer for receiving the conveyed material conveyed by the second conveyer 2 and sending out the conveyed material to the transfer conveyor 5, the roller row 3 having the same orientation as the first conveyer 1.
a and 3b, and a second receiving conveyor 30b having a row of rollers 4a and 4b in the same direction as the second carrying conveyor 2. The first receiving conveyor 30a is on an extension of the first carrying-in conveyor 1,
The second receiving conveyor 30b is arranged on an extension of the second carry-in conveyor 2.

The delivery conveyor 5 comprises a first receiving conveyor 3
This is a conveyor that sends the conveyed object conveyed from Oa to the turntable device 8, and is arranged on an extension of the first receiving conveyor 30a. In this case, the roller rows 5a, 5b of the delivery conveyor 5 are provided at positions slightly higher than the heights of the roller rows 1a, 1b, 2a, 2b of the carry-in conveyors 1, 2, and therefore, the first Receiving conveyor 30
a is provided with an elevating mechanism 7, which allows the first receiving conveyor 30a to elevate between a connection height position for each of the carry-in conveyors 1 and 2 and a connection height position for the delivery conveyor 6. It has become.

The unloading conveyor 6 is disposed so as to be turned 90 degrees with respect to the delivery conveyor 5 so as to be in contact with the turntable device 8 and to convey the goods received from the turntable device 8 to a target place. It is.

Next, a turntable device 8 according to the present invention will be described with reference to FIGS. A rail 17 is laid in a ring shape on the floor on which the turntable device 8 is installed, and the turntable main body 11 is supported on the rail 17 via wheels 15 so as to be pivotable.

On the floor below the turntable body 11, a speed reducer 13 covered by a housing 13a and a turning drive motor 12 connected to the speed reducer 13 are provided. As the speed reducer 13, an oil bath type completely closed type speed reducer having a structure in which a lubricating portion is not exposed to the environment is used. Therefore, it is possible to prevent dust and the like from entering the lubricating portion. The output shaft 1 of the speed reducer 13
4 is projected vertically upward from the housing 13a, and is connected to a turning center portion of the lower surface of the turntable main body 11 via a special joint mechanism 20.

The joint mechanism 20 shown in FIGS. 5 and 6 includes a turntable side bracket 21 fixed to the lower surface of the turntable body 11 and an output shaft side fixed to the upper end of the output shaft 14 of the speed reducer 13. A bracket 24, an intermediate member 23 disposed between the two brackets 21, 24,
The brackets 21 and 24 and a pair of horizontal pins 26 and 27 for connecting the intermediate member 23 so as to be vertically rotatable, respectively. In this case, both horizontal pins 26, 27
Are connected between the lower end of the turntable side bracket 21 and the upper end of the intermediate member 23, and between the lower end of the intermediate member 23 and the upper end of the output shaft side bracket 24, respectively. , 27 are turned 90 degrees so as to be orthogonal to each other.

With such a configuration, the joint mechanism 20
Is provided with two upper and lower hinge portions 22, 25, so that each hinge portion 22, 25 can be vertically rotated in a direction different by 90 degrees. The roller rows 11a and 11b on the turntable main body 11 are provided in a pair at the same width and the same height as the roller rows 5a and 5b of the transfer conveyor 5, and are indicated by the solid line position and the chain line position in FIG. As described above, by turning 90 degrees, the delivery conveyor 5 and the unloading conveyor 6 can be selectively connected.

When the conveyed object is conveyed from the delivery conveyor 5 to the turntable device 8, the output shaft 14 of the speed reducer 13 is rotated by the turntable turning motor 12, and the turntable body 11 turns while being supported by the wheels 15. Is done.

In the turntable device 8 having such a configuration, the turntable main body 11 and the output shaft 14 are connected by the joint mechanism 20 having the two hinge portions 22 and 25. 1
Even when vibration occurs in the motor 1, no moment acts on the output shaft 14, and a smooth turning operation can be performed. Further, the reduction gear 13 which is a lubricating part is
Since it is covered by a, it is possible to prevent dust from entering the lubricating part even when used in an environment where there is a lot of dust.

[0022]

As described above, according to the present invention, since the reduction gear, which is the lubricating portion, is covered by the housing, even when the device is used in an environment where there is a lot of dust, dust and the like on the lubricating portion can be reduced. Adhesion can be prevented, and an effect that it is not necessary to apply much labor for maintenance is obtained. Further, when vibration occurs in the turntable main body during turning, a moment acts on the output shaft of the speed reducer, which is the turning center, but the connecting pin between the end of the output shaft and the turntable main body is vertically moved by the horizontal pin. A rotatable coupling mechanism having at least two hinge portions is provided;
The joint mechanism has a configuration in which both hinge parts are vertically separated from each other, and the horizontal pins are connected in a direction orthogonal to each other, so that no moment acts on the output shaft of the speed reducer,
The effect that a smooth turning operation can be performed is obtained.

[Brief description of the drawings]

FIG. 1 is a plan view illustrating a configuration of an entire transfer device having a turntable device according to an embodiment of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a plan view showing the turntable device in FIG. 1;

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a front view of a special joint mechanism for connecting the output shaft of the speed reducer and the turntable body.

FIG. 6 is a side view of FIG.

FIG. 7 is a diagram showing an example of a conventional turntable device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Turntable main body 12 Turntable turning motor 13 Reducer 13a Housing 14 Output shaft 15 Wheel 20 Joint mechanism 26, 27 Horizontal pin 22, 25 Hinge part

Claims (2)

[Claims] 1. A turntable body is rotatably supported by wheels, and a speed reducer covered by a housing and a drive source connected to the speed reducer are provided on a floor below the turntable body, A turntable device, wherein an end of an output shaft of the speed reducer protrudes from a housing, and the end of the output shaft is connected to a turning center of a turntable body. 2. A joint mechanism having at least two hinge portions, which is rotatable vertically by a horizontal pin, is provided at a connecting portion between an end portion of the output shaft and the turntable main body. The turntable device according to claim 1, wherein the portions are vertically separated from each other, and the horizontal pins are connected in directions substantially orthogonal to each other.