JPH0242647Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Field of Application This invention relates to a driven wheel conveyor for conveying pallets loaded with cargo in such a manner that the pallets can be temporarily stopped during conveyance.

Conventional technology and its problems This type of conveyor, for example,
As disclosed in Publication No. 8916, there is a drive chain in a frame having a U-shaped cross section, a sprocket that meshes with the drive chain and has a roller fitted to the boss via a bush, and a shaft that supports the sprocket. It is known that a roller support frame having a shaft horizontally mounted thereon is arranged and the roller support frame is attached to the inner surface of the frame with bolts and nuts, but this has the following problems. First, when changing the size of the palette, etc.
It may be preferable to change the pitch of the rollers, but since the sprocket cannot be moved, the pitch of the rollers cannot be easily changed. Second, if the sprockets, rollers, etc. become worn or damaged, if they are to be replaced, the roller support frame must be removed from the frame, making the replacement work cumbersome.

The object of this invention is to provide a driven wheel conveyor which solves the above-mentioned problems.

Means for solving the problem The driven wheel conveyor according to this invention is
A driven wheel conveyor is equipped with a conveyor wheel that has a shaft hole in which the boss of a sprocket that is engaged with the drive chain is fitted, and is driven by frictional resistance with the boss. The support shaft is inserted so that it can move freely in the direction, and both ends of the support shaft are fixed and fixed.
It is equipped with a clamping member with left and right bolts and nuts that is releasably clamped and supported by the conveyor frame, and the bolt head or nut of the clamping member is restrained from rotating but cannot move longitudinally. The frame is characterized in that an enlarged groove inside the upper opening is freely inserted and extends in the length direction of the frame.

Function The drive-type wheel conveyor according to this invention has a support shaft that is rotatably and axially movably fitted into the boss, and both ends of the support shaft are fixed and releasably clamped, respectively, and the conveyor
There are left and right clamping members with bolts and nuts that are supported by the frame, so when the bolts and nuts are loosened, the support shaft is released from being fixed by the clamping members, and the support shaft can be removed from the sprocket and the clamping members. .

Furthermore, an enlarged upper opening internal groove is provided to extend in the length direction of the frame, into which the bolt head or nut of the clamping member is inserted so that rotation is restricted but movement in the length direction is free. Therefore, when the bolt and nut are loosened, the clamping member can move freely along the internal enlarged groove.

Embodiment An embodiment of this invention will be described below with reference to the drawings.

FIG. 1 shows the right side frame and its surroundings of a driven wheel conveyor.

The side frame 11 is made of extruded aluminum and has a U-shaped cross section.
It has opposing inner and outer walls 12, 13 and a bottom wall 14. A pallet guide wall 15 is integrally provided on the outer surface of the outer wall 14 in an upwardly projecting manner, and a sliding rail 16 is attached to the inner surface of the upper end of the wall, so that the side edge of the pallet P is moved against this. ing. The sliding rail 16 is made of synthetic resin such as ABS or nylon. Both inner and outer walls 12,1
Upper opening internal enlarged grooves 17 are provided on the upper surface of 3, and these are parallel to both side walls 12 and 13.
It extends in the length direction. Both inner and outer walls 12, 13
A drive chain 18 is arranged near the outer wall 13 between the two. The upper feed side of the chain 18 is connected to an upper guide rail 20 attached to a rail receiver 19 provided on the outer wall 13 in an inwardly projecting manner.
The downward return sides are respectively guided by lower guide rails 21 directly attached to the bottom wall 14. The upper feed side of the chain 18 is hung on a sprocket 22. The entire sprocket 22 is integrally formed of nylon, and the boss 23 is made up of an outer large diameter section 25 and an inner small diameter section 26 that are connected via a step 24, and the boss 23 is formed of an outer large diameter section 25 and an inner small diameter section 26. Teeth 27 are formed at the ends. A compression coil spring 28 is fitted on the outer surface of the large diameter portion 25 inside the teeth 27. A transport wheel 29 is rotatably attached to the outer surface of the inner small diameter portion 26, and a retaining ring 30 is attached to the inside of the wheel 29. The wheel 29 is
Made of synthetic resin that is wear and impact resistant. An inner thrust ring 31 is interposed between the inner opening edge of the shaft hole of the wheel 29 and the step 24, and an outer thrust ring 31 is interposed between the outer opening edge of the wheel 29 and the retaining ring 30. The wheel 29 is connected to the spring 28 via the thrust ring 31 of
The rotational force of the sprocket 22 is transmitted to the wheel 29 by the pressing force. A support shaft 32 is fitted into the boss 23 of the sprocket 22 so as to be rotatable and movable in the axial direction. Both ends of the support shaft 32 protrude inwardly and outwardly from the sprocket 22, respectively, and both protrusions are held in place by a clamping member 33.
are sandwiched between them. The holding member 33 has a rectangular parallelepiped shape that is elongated in the length direction of the chain 18, and is received at the opening edge of the internal enlarged groove 17. Support shaft insertion holes 34 are formed at both ends of the holding member 33, into which the ends of the support shaft 32 are inserted so as to be movable in the axial direction. A horizontal slit 35 is provided in a portion extending from the support shaft insertion hole 34 to one end so as to divide this into an upper and lower portion. A bolt insertion hole 36 is formed in the part divided by the slit 35 so as to pass vertically through each of the parts so as to be concentric, and a bolt insertion hole 36 is formed vertically through the part from the support shaft insertion hole 34 to the other end. Another bolt insertion hole 37 is also drilled. A bolt 38 is inserted into the bolt insertion holes 36 and 37 with its head 39 facing upward. The threaded portion 40 projects downward from the holding member 33 and enters the internal enlarged groove 17, and a nut 41 inserted into the internal enlarged groove 17 is screwed into this. Natsu 41
The width across parallel planes is slightly smaller than the width of the internal enlarged groove 17, and although it does not rotate within the groove 17, it is movable in its length direction.

By tightening the bolt 38 and nut 41, the clamping force presses the clamping member 33 against the opening edge of the internal enlarged groove 17, thereby fixing the clamping member 33 to the frame 11. . On the other hand, by tightening both, the clamping member 33
The parts divided by the slit 35 are elastically deformed so as to approach each other, thereby reducing the diameter of the support shaft insertion hole 34 and fixing the support shaft 32.

When the bolt 38 and the nut 41 are loosened, the tightening force is lost, so the clamping member 33 is inserted into the internal enlarged groove 1.
7 and can be moved freely. On the other hand, since the portion that was deformed by tightening the bolt 38 and nut 41 returns to its original shape, the support shaft insertion hole 34 also returns to its original diameter, and the support shaft 32 moves in the axial direction with respect to the support shaft insertion hole 34. Become free. Therefore, when the support shaft 32 is removed from the clamping member 33 and the sprocket 22,
The sprocket 22 and the wheel 29 are removed from the frame 11.

In the above embodiment, the slit is provided only on one side of the support shaft insertion hole, but as shown by the chain line in FIG. 2, the slit is provided on both sides of the support shaft insertion hole, and the entire holding member is It may be divided into two parts.

Effects of the invention According to this invention, when the bolt and nut are loosened, the fixation of the support shaft by the clamping member is released and the support shaft is extracted from the sprocket and the clamping member. It can be easily removed and replaced.

Furthermore, when the bolt and nut are loosened, the clamping member becomes movable along the internal enlarged groove, so that the pitch of the conveyor wheel can be easily changed by moving the clamping member.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of this invention, and FIG. 2 is a view taken along the - line. 1... Internal expansion groove, 18... Chain, 22...
... Sprocket, 29 ... Wheel, 32 ... Support shaft, 33 ... Holding member, 34 ... Support shaft insertion hole, 35 ... Slit, 36 ... Bolt insertion hole,
38...Bolt, 39...Head, 40...Screw part, 41...Nut.

Claims (1)

[Claims for Utility Model Registration] The conveyor wheel 29 has a shaft hole in which the boss 23 of the sprocket 22 meshed with the drive chain 18 is fitted, and is driven by frictional resistance with the boss 23. In the drive type wheel conveyor, a support shaft 32 is fitted into the boss 23 so as to be rotatable and movable in the axial direction, and both ends of the support shaft 32 are respectively fixed and releasably clamped and clamped by the conveyor frame 11. It is equipped with holding members 33 with left and right bolts and nuts that are received,
The upper opening internal enlarged groove 17 extends in the length direction of the frame 11, into which the head 39 or nut 41 of the bolt 38 of the clamping member 33 is inserted so that rotation is restricted but movement in the length direction is free. A driven wheel conveyor, characterized in that it is provided as follows.