JPH07309412A - Collar between pulleys - Google Patents

Abstract

PURPOSE:To easily replace collars to position mutual pulleys in constitution such as arranging plural pulleys on a driving shaft in order to drive a roller conveyor or the like. CONSTITUTION:In collars 13 arranged between pulleys 11 arranged in a plurality on a driving shaft 10, the collars are composed of an elastic body capable of being cut, and thin parts A are arranged along a bus bar, and the thin parts A are arranged in positions overlapping with grooves 10a formed in the shaft direction on the drive shaft 10, and projections 13c lockable on the grooves 10a of the driving shaft are arranged on both sides of the thin parts A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a collar for positioning pulleys in a structure in which a plurality of pulleys are arranged on a drive shaft for driving a roller conveyor or the like.

[0002]

2. Description of the Related Art Conventionally, a plurality of rollers are arranged in parallel on a machine frame, a pulley is provided at the end of each roller, and a drive shaft is provided in the direction perpendicular to the rollers to drive the rollers. A pulley is fixedly mounted on the drive shaft in alignment with the roller, a belt (endless belt) is wound between the pulley and the pulley on the roller, and the drive shaft is rotated. Roller conveyors configured to drive rollers simultaneously are known. A plurality of pulleys are provided on a drive shaft for driving the roller conveyor, and the positioning of these pulleys is performed by a collar inserted and arranged between the pulleys.

[0003]

Although the distance between the pulleys on the drive shaft for driving the rollers of the roller conveyor is roughly defined, the load to be conveyed becomes small, or a plurality of rollers are collected together. In some cases, such as when the length of the zone is changed or the collar itself is damaged, it may be necessary to change the gap between the pulleys or replace the collar. At such times, in the past, one end of the drive shaft was removed, the pulley and collar were pulled out in order, the collar was replaced with the desired collar, and the collar was re-inserted. is there. Therefore, the present invention seeks to allow easy replacement of the collar.

[0004]

The problems to be solved by the present invention are as described above, and in order to solve the problems, a collar arranged between a plurality of pulleys arranged on a drive shaft is provided. A thin-walled portion is provided along the generatrix, and the thin-walled portion is provided at a position overlapping with a groove formed along the axial direction on the drive shaft. Protrusions that can be engaged with the groove of the drive shaft are provided on both sides.

[0005]

According to the first aspect, the collar can be cut on the thin portion by using such means.
Open from the cut and remove the collar from the drive shaft. Further, according to claim 2, it is easy to make a notch of the blade when the groove of the drive shaft and the thin portion are aligned and cut, and according to claim 3. , When the collar is replaced and reattached, the projection fits into the groove of the drive shaft, and the installation is easy, and it does not fall off after the installation.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will now be described with reference to the drawings. FIG. 1 is a partial sectional view of a roller conveyor in side view, FIG. 2 is a sectional view taken along the line XX in FIG. 1, and FIG. The front view of the collar of the present invention, FIG. 4 is a partial perspective view of the end, FIG. 5 is a sectional view showing a state in which the upper portion of the collar is cut and removed, and FIG. 6 is a side sectional view of the state in which the collar is broken and removed. is there.

Referring to FIGS. 1 and 2, the overall structure of the roller conveyor using the collar of the present invention will be described. On the machine frame 2, a plurality of transport rollers 1.1 ... , Which are rotatably laterally crossed, form a zone with a plurality of the transport rollers 1, 1, ... As a set, and a sensor 3 for detecting the load W is provided for each zone. When there is a luggage W, the transportation of the succeeding luggage W is stopped so that the preceding and following luggage do not collide.

Further, in one zone, several pairs of front and rear two conveying rollers 1.1 are provided, and a transmission roller 4 is arranged in the lower part between the pair of conveying rollers 1.1. The transmission roller 4 is a shaft 5 protruding from the braking body 5.
a is rotatably supported, the braking body 5 is rotatably supported by a bracket 7 via a shaft 6, and the lower portion of the braking body 5 is connected to an operating rod 9a of an actuator 9;
The actuator 9 is fixed to the machine frame, and when the actuator 9 is operated to pull (reduce) the operating rod 9a, the braking body 5 rotates about the shaft 6 and the upper portion of the conveyor roller 1 When the actuating rod 9a is pushed (extended), the transmission roller 4 comes into contact with the transport roller 1.1 to transmit power and can be driven.

In order to drive the transmission roller 4, a pulley 4a is formed on the braking body 5 side of the transmission roller 4, while a drive shaft 10 and a pulley 11 are arranged below the machine frame 2. A drive shaft 10 is rotatably provided in the front and rear direction below the machine frame 2, and a drive motor M is arranged at one end of the drive shaft 10.
The drive shaft 10 is made to be rotatable, and the drive shaft 10 is fitted with pulleys 11, 11, ..., And between the pulley 11 and the pulley 11 on the drive shaft 10, the collar 13, 13 ,. -Is fitted to fix the position between the pulleys 11, and the belt 12 is wound between the pulley 11 and the pulley 4a formed on the transmission roller 4, so that one drive shaft 10 to a large number of transport rollers 1 To be able to drive.

The drive shaft 10 is shown in FIGS.
As shown in FIG. 6, a plurality of grooves 10a, 10a.
.. are provided in the axial center (longitudinal direction) at equal intervals to form a spline shaft, and the drive shaft 10 is formed by drawing so that it can be easily processed, and both ends of the shaft are chamfered. A protrusion is formed on the inner surface of the boss portion of the pulley 11 which is fitted onto the shaft 10 so as to match the shape of the grooves 10a, 10a ... Of the drive shaft 10 so that power can be transmitted. It should be noted that the drive shaft 1 does not need to be provided with a protrusion on the pulley 11.
0 The power may be transmitted only by the friction between the outer peripheral surface and the inner surface of the pulley 11.

The collar 13 of the present invention for positioning the plurality of pulleys 11 on the drive shaft 10 is made of a cuttable elastic material such as synthetic resin, and its construction is shown in FIGS. As shown in FIG. 5 and FIG. 6, the drive shaft 10 is formed in a pipe shape larger than the outer diameter of the drive shaft 10, and is 180 along the generatrix (longitudinal direction).
Depressions 13a, 13a on the outer surface deviated by °, and the depressions 13a
The thin portion A is formed by providing recesses 13b and 13b also on the inner surface side at the position 13a. Then, projections 13c and 13c are formed on both sides of the recesses 13b and 13b in which the thin portion A is formed, and the projections 13c and 13c are sized to engage with the grooves 10a and 10a of the drive shaft 10.
As shown in FIG. 4, the end portions are formed with chamfered portions 13d and 13d so that when the drive shaft 10 is inserted, the groove 10a is formed.
The projections 13c and 13c are easily inserted.

With this structure, the drive shaft 10 is horizontally mounted on the machine frame 2, and the pulley 11 and the collar 13 are alternately fitted on the drive shaft 10 to position the pulley 11 at a predetermined position. Then, the belt 12 is wound around the pulley 11 and the pulley 4a of the transmission roller 4, the actuator 9 is extended, the transmission roller 4 is brought into contact with the transport roller 1.1, and the motor M is driven. From 10 to the pulley 11, the belt 12, the pulley 4a, the transmission roller 4, and the conveyance roller 1, the conveyance rollers 1, 1, ... Are rotated and the load W is conveyed.

When the pulley 11 is replaced, as shown in FIG. 5, the thin portion A of the collar 13 is cut with a cutter or the like, and the collar 13 is opened from this cut portion and removed from the drive shaft 10. The collar 13 is made of an elastic material, and the thin portion A is formed on the side opposite to the cut portion, so that the collar 13 can be easily expanded. When the new collar 13 is attached, it may be cut at the thin portion A, the cut portion may be widely opened and fitted into the drive shaft 10, and the protrusion 13c of the cut portion may be locked in the groove 10a of the drive shaft 10. When it is difficult to remove the collar 13 by spreading it, as shown in FIG.
You may make it cut | disconnect by the thin part A * A of a location, and may remove and attach by dividing into half.

[0014]

Since the present invention is constructed as described above, it has the following effects. That is, since it is configured as in claim 1, it can be easily cut at the thin portion of the collar, the collar can be easily removed from the drive shaft by opening from this cut portion, and the collar having different lengths It is not necessary to remove it from one end of the drive shaft in order to adjust the distance between the pulley and the pulley by replacing
It can be done easily in a short time.

According to the second aspect of the present invention, the collar is cut at the groove position and the collar is divided at the groove position, so that the notch can be easily cut, and the collar can be easily attached and detached.

According to the third aspect of the invention, the protrusion of the collar engages with the groove, so that it does not fall off from the drive shaft even after cutting or after mounting, the space can be maintained, and positioning is easy. You will be able to do it.

[Brief description of drawings]

FIG. 1 is a side view partially sectional view of a roller conveyor.

FIG. 2 is a sectional view taken along the line XX in FIG.

FIG. 3 is a front view of a collar of the present invention.

FIG. 4 is a partial perspective view of an end portion of the same.

FIG. 5 is a cross-sectional view showing a state in which the upper portion of the collar is cut and removed.

FIG. 6 is a side sectional view of a state in which the collar is broken and removed.

[Explanation of symbols]

 A thin portion 10 drive shaft 10a groove 11 pulley 13 collar 13a / 13b recess 13c protrusion

Claims (3)

[Claims] 1. A collar arranged between a plurality of pulleys arranged on a drive shaft, comprising a cuttable elastic body, wherein a thin portion is provided along a generatrix. Between colors. 2. The inter-pulley collar according to claim 1, wherein the thin portion is provided at a position overlapping a groove formed along the axial direction on the drive shaft. 3. The inter-pulley collar according to claim 2, wherein projections that can be engaged with the grooves of the drive shaft are provided on both sides of the thin portion.