JPS6211866Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a backlash prevention device that can be used to prevent a stopped trolley from moving backward due to reaction in a trolley storage line of a trolley conveyor. An object of the present invention is to provide a device that can reliably prevent a trolley from moving backwards after release of drive even if the release position accuracy is low.

One embodiment of the present invention will be described below based on the attached illustrative drawings. In FIGS. 1 and 2, 1 is a trolley supported by a guide rail 2, and Therefore, it is propelled in the four directions of the arrow,
It has plates 5 and 6 extending in both left and right directions. Reference numeral 7 denotes a backlash prevention device of the present invention installed at one backlash prevention position in the storage line of the trolley 1, and includes three antiback stops 9, 10, 11 and a release means 12.

As shown in FIGS. 3 and 4, among the anti-back stops 9 to 11, the first and third anti-back stops 9, 11 are located between the central support plate 13 and the one-side support plate 14. The second antiback stopper 10 is supported so as to be able to rise and fall in close proximity to each other in the front and back. It is supported so as to be movable up and down so as to overlap with these anti-back stops 9 and 11 laterally. Each of the anti-back stops 9 to 11 is made of a flat strip plate in the front-rear direction, and has an inclined surface 16 facing diagonally rearward and downward and a stop surface 17 facing forward at the lower end, and each support plate 13, 14 and 13,15
An elongated hole 21 in the vertical direction is provided in which two guide rollers 19 and 20 in upper and lower stages pivotally supported by a support shaft 18 are fitted loosely therebetween. 22 is each anti-backstopper 9-1
This is a fall prevention stopper that protrudes left and right from the upper end of the support plate 1, and comes into contact with the upper surface of each of the support plates 13 to 15 when it is at the lower limit position.

The release means 12 includes a slide bar 24 supported so as to be slidable in the front and rear directions within a groove-shaped frame 23 whose lower side is open, and suspension ropes 25 to 25 connecting the slide bar 24 and the upper ends of each antiback stopper 9 to 11. 27, and a guide pin 28 installed in the channel frame 23 to guide each of the hanging ropes 25 to 27.
- 30, an inverted L-shaped lever 31 pivotally supported on the front end of the slide bar 24 so as to be able to swing vertically, and recesses 32 and 33 on the upper side in which the lever 31 is fitted in the operating position A and the release position B. It also includes a plate 34 connected to the groove-shaped frame 23.

As shown in FIGS. 1 and 2, the support plates 13 to 15 are supported by the guide rails 2 and 3 so as to be located above the moving path of the overhanging plate 5 on one side of the trolley 1 in the front-rear direction. The groove-shaped frame 23 of the release means 12 is supported by a pair of front and rear columns 35 and 36.
It is attached to the lower side of the beam member 37 installed between 5 and 36. Reference numeral 38 denotes a sway stopper comprising horizontal shaft rollers 39 disposed at appropriate intervals in the front-rear direction to prevent the trolley 1 from swinging by coming into contact with the other overhanging plate 6 of the trolley 1 at the position where the reverse movement prevention device 7 is provided. It is a guide rail and is supported by the guide rails 2 and 3 via a support frame 40.

The reverse movement prevention device 7 is configured such that the dog of the trolley 1 is automatically moved from the propulsion pusher by an opening/closing stopper at the tip of the storage line or by a stop trolley already stopped at a normal position in the storage line, as is well known in the art. When the trolley 1 is separated, the overhanging plate 5 of the trolley 1
is located immediately in front of the first antiback stopper 9, as shown by the imaginary line in FIG.
As a result, the protruding plate 5 of the trolley 1 moving forward is attached to each antiback stopper 9 to 1.
1 from the rear, while being pushed up through the slope 16, and immediately after passing the anti-back stopper 9 at the front, it is automatically stopped.
Even if the trolley 1 attempts to move backward due to the reaction, the overhanging plate 5 comes into contact with the stop surface 17 of the anti-back stopper 9 which has returned to the lowering limit position by its own weight, and the backward movement of the trolley 1 is prevented.

If the position of the last trolley that has already stopped is shifted backward from the normal position due to the reaction at the time of stopping, for example, as shown in Figure 4, the second trolley
Since the trolley 1 will be stopped immediately after the overhanging plate 5 passes the anti-back stopper 10, the prevention of the trolley 1 from moving backwards is performed by the second anti-back stopper 10, and the first anti-back stop stops. Par 9 remains pushed up by the overhanging plate 5. If the stop position deviation of the last stop trolley is even greater, the third antiback stopper 11 prevents the trolley 1 from moving backward.

If the length of the storage line is long, the above-mentioned backtracking prevention device 7 is installed at multiple locations at appropriate intervals, but the closer the storage line is to the rear end, the more misalignment of the stop trolley accumulates and the stop trolley is unable to reach its normal stop position. Since the amount of deviation of the trolley stop position relative to the storage line increases, the number of anti-back stoppers for the reverse movement prevention device near the rear end of the storage line may be increased to three or more, for example, six or eight.

When manually pulling out the stop trolley in the storage line from the rear end of the storage line, lift the lever 31 upward and remove it from the recess 3 at the operating position A.
2, and then pull the lever 31 forward to the release position B to slide the slide bar 24, and the first to third
The anti-back stops 9 to 11 are lifted above the moving path of the overhanging plate 5, and in this state, the lever 31 is returned downward to engage the recess 33 in the release position B.
By locking the trolley 11 at the lifting position, the trolley 1 can be moved rearward.

According to the reverse movement prevention device of the present invention as in the above-described embodiment, a plurality of antiback stoppers are lined up in the front and back direction, partially overlapping with each other, at one back movement prevention position in the moving path of the conveyance moving body. Since the spacing between the stopping surfaces of each stopper is made smaller than the length of each stopper in the longitudinal direction, there may be some deviation in the position of the conveying moving body stopped by the stopper or the preceding stopping conveying moving body. However, by using one of the antiback stoppers, it is possible to always prevent backward movement by minimizing the backward movement due to reaction.

Incidentally, the anti-back stopper may be of a swing type that swings up and down around a support shaft.

[Brief explanation of drawings]

The drawings show the state of use of the device according to one embodiment of the present invention, in which Fig. 1 is a partially cutaway front view, Fig. 2 is a side view of the same, Fig. 3 is an enlarged longitudinal sectional front view of the main part, and Fig. 4 is a partially cutaway front view.
The figure is a longitudinal sectional side view of the same part. 1... Trolley (moving body for transportation), 5, 6...
Overhanging plate, 7... Reverse movement prevention device, 9-1
DESCRIPTION OF SYMBOLS 1... Antiback stopper, 12... Release means, 13-15... Support plate, 19, 20...
...Guide roller, 24...Slide bar, 25~
27... Suspension rope, 31... Lever, 32, 33...
Recess for lever locking.

Claims (1)

[Scope of utility model registration request] A plurality of anti-back stoppers are installed in the forward and rearward direction at one back movement prevention position in the movement path of the transport vehicle to allow the forward moving transport vehicle to pass through by upward movement and to stop the backward transport vehicle. are placed side by side with some overlap with each other,
A device for preventing back movement of a transport moving body, in which the distance between the stop surfaces of each stopper is made smaller than the length of each stopper in the longitudinal direction.