JP2581299Y2 - Hanging mechanism of the hanger of the hanging transfer device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for preventing a swing of a hanger in an apparatus for loading and transporting a conveyed object on a hanger in a suspended state.

[0002]

2. Description of the Related Art Heretofore, there are the following three mechanisms as examples of mechanisms for stopping swinging of a hanger in a transport apparatus capable of traveling while placing a transported object on a hanger in a suspended state. As shown in FIG. 8, the first hanger swing prevention mechanism has a guide rail 24 having a U-shaped cross section and a guide roller 25 that can abut inside the guide rail 24. The guide rail 24 runs on the traveling rail 21 by the traveling wheels 22 of the transport device 20 and is laid in parallel with the traveling rail 21 on one side of a hanger 23 that can be tilted in the direction of arrow A. As shown in FIG. 9, the second hanger swing prevention mechanism includes a pair of guide rails 34, 34 and a pair of guide rollers 35, 35 that can contact the lower surfaces of the pair of guide rails 34, 34. I have. The pair of guide rails 34, 34 run on the traveling rail 31 by the traveling wheels 32 of the transport device 30 and are laid in parallel with the traveling rail 31 on both sides of a hanger 33 that is tiltable in the direction of arrow A. The third hanger anti-sway mechanism is shown in FIGS.
, A pair of guide rails 44, 44 and a pair of guide rails 44, 4 provided at one end of the hanger 43.
4 and a pair of guide rollers 45, 45 that run on the guide roller 4. The pair of guide rails 44 run on the traveling rails 41 by the traveling wheels 42 of the transfer device 40 and can be tilted in the direction of arrow A (see FIG. 11).
3 is laid on both sides in parallel with the running rail 41.

[0003]

However, each of these hanger anti-swing mechanisms has the following problems. (1) In the first and second hanger anti-swing mechanisms, it is necessary to provide a gap S between the guide rail and the guide roller, and the hanger swings by the gap. (2) The third hanger swing-prevention mechanism receives a part of the weight of the conveyed object and the hanger by the pair of guide rails and the guide rollers, and therefore has a structure supporting the guide rails, the guide rollers, and the guide rollers. Must be strong.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a pair of guide rails laid in parallel with the traveling rails on both sides of a hanger in a suspended state running on the traveling rails by traveling wheels are provided. The pair of guide rails
Of the guide rails is pressed against the lower surface of one of the guide rails.
Fix the guide roller so that it is in contact with the other guide rail.
A pair of guide rows fixed and attached to the hanger
The above problem has been solved by a structure having

[0005]

The hanger places a conveyed object and travels on a traveling rail by traveling wheels. A pair of guide rollers, urging hand guide rollers pressed against the lower surface of the one guide rail
However, the other guide roller contacts the lower surface of the other guide rail.
Because it is fixed at the contact position,
One of the guide rollers is the other of the fixed guide rollers.
Always urge the idler roller against the other guide rail,
The even if corrugated error vertically mounted position of Idore Le
The wavy error is caused by one of the guide rollers being urged by the pressing.
Is absorbed by the vertical movement, thus, the pair of guide rollers, without generation of a gap between the guide rails, traveling in contact with the guide rail. During running of hanger, the shaking occurs in a direction intersecting the traveling rail, before
The other fixed guide roller abuts the guide rail
Since it is capable of receiving the shaking, it holds the sway of the hanger.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. The suspension transport device 50 is a device that transports a vehicle body (work) W by suspending it on an automobile manufacturing line, and has a carrier 51 and a hanger 52. Carrier 5
1 has a driving portion 54 having a driving wheel 53 and a driven portion 56 having a driven wheel 55, and is laid along a traveling rail 57.
This portion receives a control signal and electric power from the control signal line and the power supply line (not shown) and travels on the traveling rail 57 by the motor 58 of the drive unit 54. The driving section 54 and the driven section 56 are connected by a connecting bar 59 so as to be tiltable.

The hanger 52 has an upper frame 60, suspension arms 61, 61, horizontal arms 62, 62, and work support arms 63, 63, and is a part for suspending the vehicle body W. The upper frame 60 includes the left and right frames 6
4, 65, hanger connecting members 68, 68 for connecting front and rear frames 66, 67 and left and right frames 64, 65.
And has a rectangular frame shape. The upper frame 60 is connected to a connection bar 59 via hanger connection members 68, 68 so as to be tiltable in a direction intersecting the traveling rail 57. That is, the hanger 52 tilts in the directions of arrows C and D in FIG. Note that the carrier itself may be tilted in the directions of arrows C and D with respect to the traveling rail 57 without connecting the hanger connecting member 68 and the connecting bar 59 so as to be tiltable. The suspension arms 61 are provided in a suspended state at diagonal positions of the upper frame 60.

[0008] snubber mechanism 70 of the hanger is a mechanism for pressing the swing hangers 52, a pair of guide rails 71 and 72, a fixed guide row La 7 3, a movable Gaidoro <br/> over La 7 4, The movable guide roller 74 is
Coil spring (elastic body) 75 that urges against the valve 72
And

A pair of guide rails 71 and 72 (see FIGS. 1 and 3) are suspended from the ceiling (not shown) of the factory in parallel with the traveling rail 57 on both sides of the hanger 52.
As shown in FIG. 2, the end portions of the guide rails 71 and 72 are formed with slopes 76 and 77 (not shown) for receiving fixed and movable guide rollers 73 and 74 made of nylon to be described later. The guide rails 71 and 72 may be laid on a line in a process where the hanger 52 is not likely to sway, and need not be laid on other lines.

The fixed guide rollers 73, 73 (see FIG. 3)
Are rotatably provided on the fixed guide roller base 80 (see FIGS. 4 and 5) at appropriate intervals in the longitudinal direction of the left frame 64. The fixed guide roller 73 is attached at a position where it contacts the lower surface of one guide rail 71.
The fixed guide roller base 80 is a plate for adjusting the contact state of the fixed guide roller 73 to the guide rail 71, and is vertically moved by four fixing bolts 78 and four long holes 79 (FIG. The position can be adjusted in the upper and lower direction (FIG. 5). The fixing bolt 78 is screwed into a vertical plate 89 integrated with the left frame 64.
On both sides of the fixed guide roller base 80, projecting pieces 81, 82 are provided.
Is provided. Adjustment bolt 8 on left frame 64
L-shaped support plates 85 and 86 having 3, 84 are provided, respectively. Nuts 8 for adjusting bolts 83 and 84
7,88 are screwed.

Guide roller 7 fixed to guide rail 71
The adjustment of the contact state 3 is performed in the following procedure. First, the suspension transfer device 50 is stopped, and the hanger 52 is set in a state where it is not shaken. Next, the fixing bolt 78 and the nuts 87, 8
8, the adjusting bolts 83 and 84 are rotated, the fixed guide roller base 80 is moved up and down by guiding the fixing bolt 78 and the long hole 79, and the fixed guide roller 73 is provided with a gap on the lower surface of the guide rail 71. Abut without contact .
Finally, the fixing bolt 78 and the nuts 87 and 88 are tightened to fix the fixed guide roller base 80 to the left frame 64, and the adjusting bolts 83 and 84 are connected to the support plates 85 and
Fix to 86. Thus, the position adjustment of the fixed guide roller 73 with respect to the guide rail 71 is completed.

The movable guide rollers 74 (FIGS. 2 and 3)
) Are rotatably provided on the movable guide roller base 91 (see FIGS. 6 and 7) at appropriate intervals in the longitudinal direction of the right frame 65. The movable guide roller 74 is urged against the lower surface of the other guide rail 72. The movable guide roller 74 includes a tilting arm 90 that tilts up and down.
Is rotatably provided at one end. Tilting arm 90
Is provided on a movable guide roller base 91 described later so as to be tiltable by a pin 92. Tilting arm 90 is always times 6 in the direction of arrow E by the coil spring 75
It is being urged . A coil spring 75 is provided at one end of the tilt arm 90 so as to be tiltable.
3 and a spring receiver 94 provided on the movable guide roller base 91, and is held by spring holding brackets 95 on the movable guide roller base 91 so as to be able to expand and contract.

The movable guide roller base 91 is a plate for adjusting the pressing state of the movable guide roller 74 against the guide rail 72. Similarly to the fixed guide roller base 90, the movable guide roller base 91 is provided between the right frame 65 and the four fixed bolts 96, four elongated holes 97, two projecting pieces 98, 99, and two adjustment bolts 100. , 101, 2
Support plates 102, 103, two nuts 104, 105
Is provided. The fixing bolt 96 is screwed into a vertical plate 106 integrated with the right frame 65. Adjustment bolt 10
By adjusting the positions of 0 and 101, the pressing state of the movable guide roller 74 against the guide rail 72 is adjusted, and the movable guide roller base 91 is fixed by the fixing bolt 96. However, since the movable guide roller 74 is provided on the tilt arm 90, it is not fixed. Fixed, the position adjustment of the movable guide roller base 80,91, preparative when laying the running rails 57 and the guide rails 71 and 72 at the factory
Even if an attachment position error occurs, the fixed and movable guide rollers 73,
74 can be brought into contact with the lower surfaces of the guide rails 71 and 72.

Next, the operation of the hanger swing preventing mechanism 70 will be described. When the suspended transfer device 50 loaded with the conveyed goods has traveled to the guide rails 71 and 72, the fixed guide roller 73 and the movable guide roller 74 are inclined.
It is guided to the lower surfaces of the guide rails 71 and 72 by 77. The fixed guide roller 73 and the movable guide roller 7
Guide structure according to the slope of 4 need not be identical, for the sake of convenience, are shown in cormorants by Ru same der. In this manner, the fixed guide roller 73 is placed on the lower surface of the guide rail 71.
The movable guide roller 74 is in contact with the
While being pushed down from the solid line position in FIG. 6 to the imaginary line position in FIG.
It moves to the lower surface of. When the hanger 52 swings in the direction of arrow C in FIG. 1, the fixed guide roller 73 restricts the swing of the guide rail 71 in the direction of arrow C, and when the hanger 52 swings in the direction of arrow D, the movable guide roller 74 moves the guide rail 7.
The swing in the direction of arrow D in FIG .

Therefore, the fixed guide roller 73 of the hanger anti-swing mechanism 70 always contacts the guide rail 71 without any gap.
The movable guide roller 74 is constantly pressed against the guide rail 72 by the pressing force of the coil spring 75.
You . For this reason, rattling due to the gap between the fixed and movable guide rollers 73, 74 and the guide rails 71, 72 can be eliminated, and the load applied to the guide rails can be reduced. If the elasticity of the coil spring 75 is larger than the externally applied force, the hanger 52 is stabilized without swinging. Thereby, the thin guide rail 7
Even if it is 1, 72, the swing of the hanger 52 can be prevented.

[0016]

According to the anti-swing mechanism of the present invention , one movable guide roller of the pair of guide rollers is used as an elastic body.
Therefore, it is constantly pressed against the lower surface of one guide rail,
Place the other fixed guide roller on the lower surface of the other guide rail
Because a constant contact is made, a pair of guide rollers
It is structured to always contact the guide rail without gaps
Therefore, there is a wavy error in the vertical mounting position of the guide rail.
The fixed guide roller does not
Due to the reaction force of the urging force against the guide rail,
Following the wavy error without creating a gap between
While in contact with the lower surface of the guide rail,
The contact state between the guide roller and the guide rail is
Since there is no elastic displacement, the hanger can be prevented from rolling.
The stopping action increases, and the guide rollers
Movable guide roller with urging force
The hanger has a special anti-sway function.
It can be. In addition, since the pair of guide rollers are configured to be always in contact with the lower surfaces of the pair of guide rails, there is no need to receive the pair of guide rollers on the upper surfaces of the pair of guide rails, unlike the related art. The weight of the conveyed article or the like is not added to the guide rail and the guide rail. For this reason, the structure of the anti-swing mechanism can be simplified.

[Brief description of the drawings]

FIG. 1 is a right side view of FIG. 2 showing a transfer device provided with a hanger anti-sway mechanism of the present invention.

FIG. 2 is a front view of the transfer device provided with the hanger swing prevention mechanism of the present invention.

FIG. 3 is a plan view of FIG. 1;

FIG. 4 is a front view of a fixed guide roller.

FIG. 5 is a left side view of FIG.

FIG. 6 is a front view of a movable guide roller.

FIG. 7 is a right side view of FIG.

FIG. 8 is a side view of a transfer device provided with a conventional hanger swing prevention mechanism.

FIG. 9 is a side view of a transfer device provided with another conventional hanger swing prevention mechanism.

FIG. 10 is a front view of a transfer device provided with another conventional hanger swing prevention mechanism.

FIG. 11 is a left side view of FIG.

[Explanation of symbols]

50 suspension conveying device 52 Hanger 53 drive wheels 55 driven wheels 57 running rail 70 snubber mechanism 71 guide rail 73 fixed guide row La 74 movable guide row La 75 coil spring (elastic member)

Claims (1)

(57) [Scope of request for utility model registration] 1. A pair of guide rails laid in parallel with the traveling rail on both sides of a hanger in a suspended state traveling on traveling rails by traveling wheels, and one guide rail.
Roller is one of the pair of guide rails.
The other guide roller is pressed against the lower surface of the
The hanger is fixed at the position where
And a pair of guide rollers attached to the suspension conveying device.