JP3146231B2 - Anti-sway mechanism for transfer equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steadying mechanism of a transfer device which is suspended and supported by a traveling carriage of a transfer device.

[0002]

2. Description of the Related Art For example, in a factory assembly line,
Parts are automatically transferred to a predetermined place by a transfer device. This transfer device has a traveling vehicle that travels by itself along a predetermined route along a rail, and a traveling device on which components are to be transferred is suspended and supported by the traveling vehicle.

[0003] Generally, rails are provided with hills such as uphills and downhills, and when the traveling vehicle travels on the hills of the rails, the traveling vehicle tilts. However, even in this case, the parts are transported while maintaining a horizontal state. Therefore, a transfer device for transferring the components is rotatably supported on the traveling vehicle so that the device can always be moved while maintaining a vertical state.

However, if the transfer device is rotatably supported with respect to the traveling vehicle as described above, the transfer device is likely to swing, and if the deflection occurs, the traveling vehicle becomes unable to stably travel. Or, it is difficult or impossible to transfer the articles.

[0005] Therefore, a traveling carriage is provided with a steady rest mechanism of the transfer device. For example, a damping mechanism using an oil damper and a mechanism using solid friction have been proposed.

[0006]

However, the conventional anti- vibration mechanism does not prevent the occurrence of the run-out of the transfer device itself, but can effectively prevent the run-out of the transfer device particularly at a slope. Did not.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object a simple structure capable of preventing the transfer device from swaying itself, and allowing the transfer device to be mounted on a rail hill. An object of the present invention is to provide a steadying mechanism of a transfer device which can be maintained in a vertical state.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a lever attached to a shaft supported on a traveling vehicle.
And a roller pivotally supported at the tip of the lever, and a transfer device.
The traveling bogie has a semi-annular cam attached thereto, and
When traveling on the flat part and the slope of the cam,
The roller is selectively engaged with the plurality of arcuate engagement grooves formed.
A locking mechanism for holding the transfer device in a vertical state by combining the traveling device and the traveling vehicle traveling on a flat portion of the rail.
When the roller is engaged by the lock mechanism,
A hydraulic mechanism that locks the engagement of the grooves, the traveling vehicle to disengage the lock of the roller engagement groove of the said locking mechanism is driven by a detection signal received when riding Sakabe rail, the It is characterized by comprising a steadying mechanism of the transfer device.

[0009]

According to the present invention, when the traveling vehicle is traveling on a flat portion of the rail , the roller is driven by the lock mechanism.
The transfer device is held in a vertical state by engaging with the engagement groove of the
At the same time, the engagement of the rollers with the engagement grooves by the hydraulic mechanism
Since the rotation of the transfer device is also locked, the transfer
Occurrence of deflection of the mounting device itself is prevented.

Further, when the traveling vehicle travels on the slope of the rail, the hydraulic mechanism is actuated by the detection signal to release the lock of the roller into the engagement groove in the lock mechanism . Rotate to maintain vertical position and lock
The roller of the lock mechanism is moved to engage with another engagement groove of the cam.
Deflection of the loading device is prevented, and the components and the like loaded on the transfer device are transported while maintaining a horizontal state. In addition, the traveling of the traveling cart
When the rail moves from the slope to the flat part, the hydraulic mechanism
The transfer roller is locked again by the engagement of the roller with the engagement groove.
It occurs shake itself of is prevented.

[0011]

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 6 is a cutaway side view of a transfer device provided with a steady rest mechanism 20 according to the present invention. In the drawing, reference numeral 1 denotes a rail supported on the ceiling of a factory or the like. 2 is supported so that it can run freely. That is, a direct drive motor (hereinafter abbreviated as a DD motor) 4 is installed on an upper portion of the main body 3 of the traveling vehicle 2, and an output shaft extending in a direction perpendicular to the axis of the rail 1 of the DD motor 4. A drive wheel 6 is connected to 5. Further, two lower rollers 7, 7 are rotatably supported at the front and rear of the lower part of the traveling carriage main body 3 (front and rear with respect to the traveling direction of the traveling carriage 3 (the direction of arrow A in the drawing)). Drive wheel 6
And the lower rollers 7, 7 are supported so as to sandwich the rail 1 from above and below.

Further, a total of eight side rollers 8 rolling on the side surfaces of the rail 1 are provided rotatably on the left and right sides of the rail 1 on the upper and lower sides and the front and rear sides of the main body 3 of the carriage. The carriage 3 runs on its own along the rail 1 while being guided on its left and right by these side rollers 8.

A bracket 9 is attached to the lower part of the traveling vehicle 2, and a transfer device 10 is mounted on the bracket 9.
Is rotatably supported by a rotating shaft 11 in the front-rear direction (forward and backward with respect to the traveling direction of the traveling vehicle 2) and is suspended and supported. The transfer device 10 includes an elevating mechanism 12 and a handling mechanism (not shown). The handling mechanism is suspended and supported by elevating belts 15 and 16 wound around drums 13 and 14 of the elevating mechanism 12.

In the transfer device described above, the steady rest mechanism 2 according to the present invention is provided between the traveling vehicle 2 and the transfer device 10.
Although 0 is provided, details of the structure of the steady rest mechanism 20 will be described with reference to FIGS. 1 is a side view of the steady rest mechanism 20, FIG. 2 is a cutaway front view of the same, FIG. 3 is a sectional view taken along line BB of FIG. 2, and FIGS. 4 and 5 are hydraulic circuit diagrams.

As shown in FIGS. 1 and 2, a shaft 21 is rotatably supported by the bracket 9 on the traveling vehicle 2 side, and a first lever 22 is provided at one end of the shaft 21 at an intermediate portion. Are connected to the second levers 23, respectively. Further, the bracket 9 is provided with a hydraulic device 24 and a speed controller 25 constituting a hydraulic mechanism.

As shown in FIG. 3, the cylinder 9 is formed with a cylinder 26 which is long in a direction perpendicular to the axis of the shaft 21, and a piston 27 is slidably fitted in the cylinder 26. ing. A rod 3 slidably supported by lid members 28 and 29 from both ends of the piston 27.
0, 31 are extended, and the lid member 2 of one rod 31
The end protruding outside 9 is in contact with the end of the second lever 23.

The cylinder 26 is divided into oil chambers S1 and S2 by a piston 27.
Reference numerals 1 and S2 are connected to the hydraulic device 24 via oil passages 32 and 33 formed in the bracket 9 and the speed controller 25. Here, the circuit configuration of the hydraulic mechanism will be described with reference to FIG.

That is, in FIG. 4, reference numeral 34 denotes a solenoid type hydraulic valve provided in the hydraulic device 24, and in the middle of the oil passages 35 and 36 branched from the oil passage 32, Provided check valve 37,
38 and a pair of variable orifices 39, 40 are interposed in parallel.

On the other hand, as shown in FIGS. 1 and 2, a semi-annular cam 43 is attached to the inside of the frame 42 of the transfer device 10. Arc-shaped engagement grooves 43a, 43 to be engaged with a roller 44 rotatably supported at the distal end of the first lever 22.
b, 43c are formed.

As shown in FIG. 7, a plurality of trolley wires 45 for signal transmission are buried in the rail 1, but in this embodiment, the eighth (8p) trolley wire 45 is connected to the rail 1. It is used to send a detection signal of the slope 1a. That is, on the eighth trolley wire 45, a voltage of 200 V AC (S phase) is applied only to the slope 1a.

Next, the operation of the steady rest mechanism 20 according to the present invention will be described.

When the traveling vehicle 2 is traveling on the flat portion 1b of the rail 1 shown in FIG. 7, the piston 2 shown in FIG.
7 and the rods 30 and 31 and the second lever 23 are at the solid line position. At this time, the first lever 22 is at the solid line position in FIG. 1, and the roller 44 supported by the first lever 22 is as shown in the figure. It is engaged with the central engagement groove 43b. At this time, the hydraulic valve 34 of the hydraulic device 24 is in the state shown in FIG. 4 (locked state). In this state, the pressure oil is supplied from the oil passage 32 into the oil chamber S1 of the cylinder 26.
7, rods 30, 31 and first and second levers 22, 23
3 and 4 is fixed to the position indicated by the solid line in FIG. 3 and the engagement of the roller 44 with the engagement groove 43b is maintained.
As a result, the rotation of the transfer device 10 about the rotation shaft 11 is locked, and as shown in FIG. 7, the transfer device 10 maintains the vertical state with the run-out restricted and the rail 1 together with the traveling vehicle 2. It moves along the flat part 1b.

On the other hand, when the traveling vehicle 2 travels, for example, on the slope 1a of the rail 1 shown in FIG.
Since a voltage is applied to the hill portion 1a of the trolley line 45 of p), the traveling trolley 2 receives the voltage (detection signal of the hill portion 1a) from the trolley line 45, and its relay is driven. The hydraulic valve 34 is switched to the state shown in FIG. 5 (unlocked state). Then, in the hydraulic circuit shown in FIG. 5, since the oil chambers S1 and S2 of the cylinder 26 are in a communicating state, the piston 27 and the rods 30, 3
The first, second and third levers 22 and 23 can freely move within the range of the dashed line position shown in FIGS . 1 and 3 , and the rotation lock of the transfer device 10 is released. Can freely rotate about the rotation shaft 11.

Therefore, as shown in FIG. 7, even if the traveling carriage 2 travels on the slope 1a of the rail 1 and is inclined by an angle θ equal to the inclination angle θ of the slope 1a, the transfer device 10 is as shown in FIG. In this vertical state, the rollers 44 of the first lever 22 are engaged with the engaging grooves 43c to prevent the transfer device 10 from oscillating. Parts and the like (not shown) are conveyed while keeping the horizontal state.

When the traveling of the traveling vehicle 2 moves from the slope 1a of the rail 1 to the flat portion 1b, the trolley wire 45
The transmission of the signal from the vehicle to the traveling vehicle 2 is interrupted, the hydraulic valve 34 of the hydraulic device 24 is switched again to the state shown in FIG. 4 (locked state), and the rotation of the transfer device 10 is locked, The transfer device 10 moves along the flat portion 1b of the rail 1 while maintaining the vertical state.

As described above, in this embodiment, the transfer device 10
Since the lock and unlock of the rotation are performed by a simple hydraulic mechanism, the structure of the steady rest mechanism 20 is simplified and the maintainability thereof is improved.

[0028]

As is apparent from the above description, according to the present invention, the lever attached to the shaft supported on the traveling bogie side.
And a roller pivotally supported at the tip of the lever, and a transfer device.
The traveling bogie has a semi-annular cam attached thereto, and
When traveling on the flat part and the slope of the cam,
The roller is selectively engaged with the plurality of arcuate engagement grooves formed.
A locking mechanism for holding the transfer device in a vertical state by combining the traveling device and the traveling vehicle traveling on a flat portion of the rail.
When the roller is engaged by the lock mechanism,
A hydraulic mechanism that locks the engagement of the grooves, the traveling vehicle to disengage the lock of the roller engagement groove of the said locking mechanism is driven by a detection signal received when riding Sakabe rail, the Including the anti-vibration mechanism of the transfer device, the effect of preventing the run-out of the transfer device itself can be prevented with a simple configuration, and the transfer device can be maintained in a vertical state even on the slope of the rail. can get.

[Brief description of the drawings]

FIG. 1 is a side view of a steady rest mechanism according to the present invention.

FIG. 2 is a cutaway front view of the steady rest mechanism according to the present invention.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a hydraulic circuit diagram.

FIG. 5 is a hydraulic circuit diagram.

FIG. 6 is a cutaway side view of the transfer device including the steady rest mechanism according to the present invention.

FIG. 7 is a side view showing a traveling state of a rail of the transfer device on a slope portion and a flat portion.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 rail 1a rail slope 2 traveling carriage 10 transfer device 20 steady rest mechanism 22 first lever 23 second lever 24 hydraulic device 34 hydraulic valve 43 cam 44 roller 45 trolley wire

Continuation of front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B61B 13/06

Claims (1)

(57) [Claims] An anti-sway mechanism of a transfer device rotatably suspended and supported at a lower portion of a traveling vehicle traveling along a rail, the mechanism being attached to a shaft supported on the traveling vehicle side. Lever and
A roller supported at the tip of the lever and the transfer device;
The traveling bogie has a semi-annular cam attached thereto, and
When traveling on the flat part and the slope of the cam,
The roller is selectively engaged with the plurality of arcuate engagement grooves formed.
A lock mechanism that holds the transfer device in a vertical state by combining the two, and a hydraulic mechanism when the traveling carriage travels on a flat portion of the rail.
Thus, the engagement of the roller with the engagement groove in the lock mechanism is
The vehicle is locked and driven by a detection signal received when the traveling vehicle travels on the slope of the rail, and is driven by the lock mechanism .
Hydraulic mechanism to release lock of engagement of roller to engagement groove
And a steadying mechanism for the transfer device.