JPH0353962Y2 - - Google Patents

Description

[Detailed description of the invention] The invention consists of a drive chain suspended from a guide rail via a pusher-equipped trolley, etc.
The present invention relates to a floor conveyor comprising a transport moving body propelled by the pusher, and a drive device for driving the drive chain by an endless chain with claws in the form of a caterpillar (registered trademark). By keeping the height low, the height of the drive chain above the floor at the point where it engages with the endless chain with claws is particularly high, or conversely, it is improved so that there is no need to dig under the floor for installing the drive device. That is.

Hereinafter, one embodiment of the present invention will be explained based on the attached illustrative drawings. In FIGS. An upper guide rail 4 that supports movably, and a pusher 6 that engages with a driven dog 5 that projects downward from the trolley 3.
and a lower guide rail 10 from which the drive chain 9 is movably suspended via a trolley 8 or the like provided with a leading prevention piece 7. Reference numeral 11 denotes a drive device of the present invention, which is disposed on one side of the drive chain return path 12 remote from the propulsion line 1.

As shown in FIGS. 1, 3, and 4, this drive device 11 includes an endless chain 15 with a claw that is suspended between a pair of gear wheels 13 and 14 and meshes with the drive chain 9, and a motor. 16, and reducer 17
are provided on a movable frame 18 that is supported so as to be movable in parallel to the moving direction of the drive chain 9 at a portion where the endless chain with claws 15 engages, and the motor 16 and the speed reducer 17 are connected to the movement of the movable frame 18. As shown in FIG. Said passive shaft 1
Right angle transmission gears (for example, bevel gears) 21a, 21b and spur gears 22a to 22d (the number of stages is not limited to those shown in the figure, but can be configured according to the required reduction ratio) A rotary shaft 1 that supports the tooth wheel 13 on the side closer to the transmission shaft 20 of the pair of tooth wheels 13 and 14;
3a and the upper end of the transmission shaft 20 are disposed at substantially the same level as the guide rail 10 that guides the drive chain 9 above the endless chain 15 with claws, that is, a pair of gear wheels. 23
a, 23b and chain 23c,
Furthermore, a spring 24 is provided which presses the movable frame 18 in the direction of movement of the drive chain 9 at a position substantially directly below the drive chain 9.

Reference numeral 25 denotes a fixed frame, and a flat rail 26 and a chevron rail 27 are installed on both left and right sides of the fixed frame. A pair of front and rear grooved rollers 29 that fit on top are pivotally supported. 30
is a take-up mechanism that adjusts the tension of the endless chain 15 with claws by adjusting the position of the gear 14. 31 is a guide rail for the endless chain 15 with claws, and 32 is a roller rail for backing up the drive chain 9.

When the motor 16 is operated, the rotation of the motor shaft 16a is transmitted from the passive shaft 19 of the reducer 17 to the right angle transmission gears 21a, 21b and the spur gear 22a.
~22d, and is transmitted to the vertical transmission shaft 20 in a reduced speed state with a predetermined reduction ratio.
The rotation of the transmission shaft 20 is transmitted to the toothed endless chain drive toothed wheel 13 via the chain transmission means 23, and the endless chain 15 is rotated in a predetermined direction at a predetermined speed. The drive chain 9 is driven by the rotation of the endless chain 15 with claws, and the pusher 6 in the propulsion line 1 propels the conveyance moving body 2 along the guide rail 4 via the driven dog 5.

If an overload occurs in the drive chain 9 while the drive chain 9 is being driven by the endless chain 15 with claws as described above, the entire movable frame 18 will spring up due to the drive reaction force of the endless chain 15 with claws. 24 in a direction opposite to the moving direction of the drive chain 9. Therefore, the motor 16 can be automatically stopped by detecting the movement of the movable frame 18 using a limit switch or the like.

According to the drive device of the present invention that can be implemented as described above, the reduction gear 17 having the above configuration is used,
The reduction gear 17 and the motor 16 are arranged side by side in the moving direction of the movable frame 18 on the side opposite to the drive chain 9 with respect to the endless chain 15 with claws, and the reduction gear transmission shaft 20 and the endless chain with claws The height of the entire device is reduced by interlocking the drive gear 13 with the chain transmission means 23 arranged above the endless chain 15 with claws and at approximately the same level as the guide rail 10. As a result, the endless chain with claws 15
There is no need to make the height of the drive chain 9 above the floor particularly high at the point where it engages with the drive chain as in the past, or conversely to dig under the floor to install the drive device, resulting in cost reduction. Furthermore, since the spring 24 that biases the movable frame 18 is disposed at a position substantially directly below the drive chain 9, the movable frame can be smoothly slid when an overload occurs.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing the layout, Fig. 2 is a side view of the propulsion line, Fig. 3 is a plan view of the drive device,
FIG. 4 is a longitudinal sectional side view of the same, and FIG. 5 is an explanatory diagram of the structure of the speed reducer. 2... Transportation moving body, 4, 10... Guide rail, 5... Driven dog, 6... Pusher, 9...
... Drive chain, 11... Drive device, 13, 14,
23a, 23b...Gear ring, 15...Endless chain with claws, 16...Motor, 17...Reducer, 18
...Movable frame, 19... Passive shaft, 20... Transmission shaft, 21a, 21b... Right angle transmission gear (e.g. bevel gear), 22a to 22d... Spur gear, 23...
Chain transmission means, 24... Spring for biasing the movable frame, 25... Fixed frame.

Claims (1)

[Scope of utility model registration request] In a floor conveyor consisting of a drive chain suspended from a guide rail via a pusher-equipped trolley or the like, and a conveying moving body propelled by the pusher, the conveyor chain is suspended between a pair of gear wheels and the An endless chain with claws that engages with the drive chain, a motor, and a speed reducer are provided on a movable frame that is supported so as to be movable in parallel to the moving direction of the drive chain at a portion where the endless chain with claws engages, and the endless chain with claws engages with the drive chain. The reducer is installed parallel to the moving direction of the movable frame on the opposite side of the endless chain with the claw to the side where the drive chain is located, and the reducer is provided with a motor parallel to the moving direction of the movable frame. It consists of a passive shaft connected to the shaft, a vertical transmission shaft, and a right angle transmission gear and a spur gear that decelerate and transmit the rotation of the passive shaft to the transmission shaft, and of the pair of gears, the transmission shaft is connected to the transmission shaft. The upper end of the rotating shaft of the gear on the nearer side and the upper end of the transmission shaft are interlocked and connected by a chain transmission means arranged above the endless chain with claws and at approximately the same level as the guide rail, and the movable frame is connected to the upper end of the transmission shaft. A floor conveyor drive device comprising a spring that presses the drive chain in the moving direction at a position substantially directly below the drive chain.