JP2002087559A - Roller conveyer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roller conveyer that not only facilitates mounting work of a driving part but also allows safe work without requiring concerning of an obstacle under a frame during work around the driving roller conveyer. SOLUTION: A driving body DP having a built-in small motor M is stored and mounted together with a specific cross member 10, so that the mounting work of the driving part DP is facilitated, and safe work is allowed without requiring concerning of the obstacle under frames 2a and 2b also during the work around the driving roller conveyer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller conveyor capable of widely using a space below a frame of a driving roller conveyor.

[0002]

2. Description of the Related Art Conventionally, in a roller conveyer or the like, a drive unit for driving a plurality of rollers continuously supported by frames arranged side by side on both sides is arranged below the frame of the roller conveyer. Or, it is installed so that it protrudes greatly below the frame.
A plurality of rollers are driven in conjunction with each other via a belt.

[0003]

However, such a conventional driving section is installed so as to protrude greatly below the conveyor frame or is installed on the floor below the conveyor frame, so that the driving section is provided around the roller conveyor. During the operation, there is a problem that an operator bruises a part of the body to cause an injury, or causes a contact when the equipment or the like is passed under the conveyor frame to cause damage.

In addition, since the conventional driving unit uses a relatively large general-purpose motor and can be mounted using a large bracket below the frame, mounting and adjustment are difficult.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and not only facilitates the work of mounting the drive unit, but also reduces the work time around the drive roller conveyor.
It is an object of the present invention to provide a roller conveyor that can safely perform work without being aware of obstacles below the frame.

[0006]

In order to achieve the above object, a roller conveyor according to the present invention is a roller conveyor in which a plurality of rollers are arranged on frames arranged side by side on both sides. A plurality of cross members are connected at predetermined intervals in the longitudinal direction, and a driving roller incorporating a motor is accommodated in a specific cross member among the plurality of cross members, and the driving of the driving roller causes It is characterized in that a plurality of rollers are driven. According to this feature, the work of attaching the drive roller is facilitated, and even when working around the drive roller conveyor, the work can be performed safely without being aware of obstacles below the frame.

[0007] In the roller conveyor according to the present invention, it is preferable that the cross member has a concave portion having an upward opening, and is accommodated in the concave portion so as to surround the driving roller. In this case, since the drive roller is mounted so as to be surrounded by the cross member, the drive roller is also safely protected for the operator.

In the roller conveyor according to the present invention, the two frames are constituted by pipes having a substantially circular cross section, and a fitting holding portion is provided in which both ends of the cross member are elastically fitted to the outer periphery of the pipe. It is preferably mounted on a provided support. With this configuration, the drive roller is mounted between the two frames in a state of being mounted on the support together with the cross member, so that it is not necessary to newly provide a mounting hole at a predetermined position of the two frames, and the elastic force of the fitting holding portion is reduced. It can be easily installed using it.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A is a plan view of a roller conveyor including a pipe frame having a substantially circular cross section in which a roller support device according to an embodiment of the present invention is used.
(B) is a front view of the roller conveyor, (c) is a side view of the roller conveyor, FIG. 2 is a sectional view taken along line AA of FIG. 1 (b), and FIG.
FIG. 4 is an exploded perspective view showing a state where the unit support block or the fitting support is attached to the fitting groove or the outer periphery of the frame.
(A) is a plan view of the fitting support, (b) is a side view of the fitting support, (c) is a partially enlarged view as viewed from the arrow B side of (a), and FIG. FIG. 6 is a cross-sectional view, FIG. 6 is a bracket for attaching a support leg or a cross member to a support frame, (a) is a side view of the bracket, (b) is a BB cross-sectional view of (a), c) is a plan view of the bracket.

First, FIGS. 1 (a) to 1 (c) show a single roller conveyor 1, and the single roller conveyor 1 includes a frame 2a supporting a plurality of rollers 3 at predetermined intervals. , 2b and a pair of these frames 2a, 2b
b, a bracket 8 which is detachably mounted at predetermined intervals and serves as a support, and the frames 2a and 2b are connected at regular intervals in the longitudinal direction using the brackets 8 which are detachably mounted at predetermined intervals. Multiple cross members 10
In addition to the connection of the cross members 10, the support member 4 includes a pair of legs 4a and 4b that are fitted into brackets 8 disposed at both ends of both frames 2a and 2b.

The two frames 2a and 2b are formed in a pipe shape having a substantially circular cross section as shown in FIGS. 2, 3 and 5, and are formed by drawing a metal material or the like.
It is cut to a fixed length for each predetermined length.

A plurality of linear projections R are equally arranged on the outer circumference of the frames 2a and 2b at predetermined intervals on the circumference, and a fitting groove 14 having a predetermined opening width is formed above one side surface. The fitting groove 14 has joining surfaces K1 and K2 that open at a predetermined angle from the center axis of the pipe, and flat support surfaces F are formed on the lower surfaces of both frames 2a and 2b. Have been.

A concave groove 12 for mounting, which is open downward, is formed in the support surface F along the longitudinal direction, and an outer frame forming the concave groove 12 is protruded inside the hollow frames 2a, 2b.
On the upper surface of the outer frame, a vertical rib IR that partitions the internal space of the frames 2a and 2b to the left and right is integrally formed.
A pair of concave grooves 12a and 12b are arranged on both wall surfaces on the opening side.

As shown in FIGS. 3 and 4, in the fitting groove 14, the outer shape is formed in a fan shape having an arcuate cross section, for example, a unit support block made of an elastically deformable synthetic resin material. 5 is inserted.

In the unit support block 5, a plurality of notches G for inserting roller shafts 6a and 6b protruding from both ends of the roller 3 are continuously provided at predetermined intervals on the arc-shaped outer periphery thereof, and are inclined. Fitting surfaces S1 and S2 corresponding to the inclined joining surfaces K1 and K2 on both sides of the fitting groove 14 formed in the frames 2a and 2b are formed on the both side surfaces thus formed, and these two fitting surfaces S1 and S2 are engaged. Stop projections 5a, 5a are formed along the longitudinal direction, and a pair of concave grooves 5 are formed inside both fitting surfaces S1, S2.
b, 5b are formed.

In the plurality of notch grooves G formed in the unit support block 5, the distance between the notch grooves G, the groove width, and the like are determined according to the transfer conditions, and the distance between the notch grooves G varies depending on the transfer conditions. Various unit support blocks 5 having a groove and a groove width are manufactured in advance.

FIGS. 6A to 6C show supporting legs 4.
Alternatively, a bracket 8 for attaching the cross member 10 to both frames 2a, 2b is shown, and the bracket 8 has a circular recess 15 formed on the upper surface thereof so as to be fitted to the bottom surface of both frames 2a, 2b. A flat surface is formed on the bottom surface of the concave portion 15 so as to be able to contact the flat support surface F on the lower surface of both frames 2a and 2b. The concave grooves r are arranged at the same interval.

The bracket 8 has a leg holding hole 8a formed substantially at the center of the bottom surface. Bolt holes 14a, 14b for mounting both frames 2a, 2b via bolts are provided on both sides of the cylinder around the leg holding hole 8a. Are formed through.

The bracket 8 is attached to the lower surfaces of the frames 2a and 2b so that the mounting surface NF faces inward. The mounting surfaces NF of the both brackets 8 are formed in a U-shaped cross section. Both ends of the cross member 10 are attached by screws (not shown).

A square hole 13 is formed substantially at the center of the mounting surface NF of the bracket 8, and a plurality of screw holes H for mounting the cross member 10 are formed around the square hole 13.
When the roller conveyor is used as a driving roller conveyor, the square hole 13 is used to insert and support a support shaft 10a on one side of a driving body DP (described later) serving as a driving roller housed in the cross member 10. Is what you do. The square hole 13 is configured to communicate with a leg holding hole 8a formed at the center of the lower surface of the bracket 8.

Here, as the driving body DP, one in which a small motor M is integrally incorporated inside a hollow pipe PA having a diameter slightly larger than the outer diameter of the roller 3 is used. When the conveyor is used as a driving roller conveyor, both support shafts 10a and 10b of the driving body DP are inserted and supported on the mounting surface NF of the bracket 8 supporting the cross member 10.

The driving bodies DP can be mounted by selectively using any one of the brackets 8 supporting the cross member 10, and the number and arrangement intervals are appropriately determined according to the conveying capacity of the conveyor. Driver D
P is accommodated in the cross member 10.

Further, the output shaft MJ of the small motor M housed in the pipe PA is inserted into and supported by the support shaft 10a having a rectangular cross section at one end of the driving body DP.
The driving body DP and the driving body DP are configured to rotate relative to each other by the rotation of the small motor M.

That is, when the small motor M rotates, the driving body DP rotates together, and the pulley MD attached to the end of the pipe PA on the one support shaft 10a also rotates together with the driving body DP. The rotation of the driving body DP causes the pulley M
The roller 3 is configured to rotate via a belt (not shown) hooked on the groove 3a at the end of the roller 3 and the roller 3.

The same end of each roller 3 has two grooves 3a.
Are provided side by side, and the grooves 3a of these adjacent rollers 3 are provided.
The belts are alternately hooked to drive all the rollers 3 in an interlocked manner. Here, a lead wire (not shown) of the small motor M is inserted outside from the output shaft MJ of the driving body DP or one of the support shafts 10a, and the inserted lead wire is taken out through the leg holding hole 8a of the bracket 8, It is designed to be connected to a power supply.

As described above, when the roller conveyor 1 as shown in FIGS. 1A to 1C is constructed,
Since both frames 2a and 2b of the roller conveyor 1 are formed in a pipe shape, as shown in FIG.
The mounting holder 9 having a circular concave portion 16 serving as a fitting holding portion that can be fitted using a circular portion on the outer periphery is mounted on both frames 2.
It can be detachably attached to desired positions a and 2b.

That is, the mounting holder 9 includes the bracket 8
Similarly to the circular concave portion 15, a linear concave groove r which can be fitted to a plurality of linear projections R formed on the outer periphery of both frames 2a, 2b is formed on the inner periphery of the circular concave portion 16.

Further, a mounting portion 11 having a flat upper end protrudes from the upper surface of the mounting holder 9, and four elastically deformable locking members L are disposed on the upper surface of the mounting portion 11. And
At the tips of these locking members L, locking claws facing outward are formed.

Further, another attachment holder (not shown) is detachably attached to the attachment portion 11 of the attachment holder 9. This attachment holder has, for example, the same structure as the attachment holder 9. The configured one is to be used.

More specifically, the mounting portion 1 of each mounting holder 9
A rectangular engaging hole KH for locking the mating tool on the mating side is formed in the vicinity of the locking tool L on the flat surface at the upper end of the upper part. Lateral holes KH 'for engaging the locking claws of the side locking tools are formed so as to communicate with each other.

Therefore, the attachment holders 9 are connected via the attachment portions 11 by inserting the engagement members L into the engagement holes KH with the respective attachment portions 11 facing each other.

That is, the attachment holders 9 are attached to desired positions of the frames 2a, 2b at predetermined intervals, and the attachment portions 1
When another mounting holder is mounted corresponding to 1, a pipe having the same outer shape as the frames 2a and 2b is mounted in the circular concave portion of the mounting holder.

The procedure for assembling the roller conveyor configured as described above will be described.

As shown in FIG. 3, when the transport conditions of the roller conveyor are determined, the intervals between the rollers 3 and the diameters of the roller shafts 6a and 6b that are adapted to the transport conditions are determined. Therefore, the distance between the rollers 3, the roller shaft 6a,
A unit support block 5 having a notch groove G formed with a groove interval and a groove width corresponding to the diameter of 6b is prepared, and this unit support block 5 is continuously provided in the fitting groove 14 of both frames 2a, 2b. And insert.

Thus, when the frames 2a and 2b are assembled, when the bracket 8 is mounted on the lower surfaces of the frames 2a and 2b, the opening side walls of the concave grooves 12 formed on the lower surfaces of the frames 2a and 2b. Grooves 12a, 1
The nut N is non-rotatably inserted into the 2b (by guiding two opposing surfaces in the case of a hexagonal nut), moved in the axial direction, and placed at a predetermined position in advance.

At the same time, the cross members 10 are mounted on the opposite mounting surfaces NF of both brackets 8 through a plurality of screw holes H, respectively.
The driving body DP is also mounted on the mounting surface NF inside the specific bracket 8 arranged at predetermined intervals.

That is, when one of the support shafts 10a, which is a square shaft, is inserted into the square hole of the mounting surface NF of the bracket 8 and the other is supported by the support shaft 10b, the driving body DP covers the driving body DP. The cross member 10 is mounted on the mounting surface NF of both brackets 8.

In this manner, the plurality of brackets 8 incorporating the cross member 10 and the plurality of brackets 8 incorporating the driving body DP are mounted on the lower surfaces of both frames 2a, 2b at predetermined intervals.

The plurality of brackets 8 are connected to both frames 2a,
A circular concave portion 15 is fitted on the outer periphery of the lower surface of 2b and attached at predetermined intervals. At this time, the linear concave grooves r are fitted to the plurality of linear projections R formed on the outer periphery of both frames 2a, 2b.

Next, the bolt B is inserted through the bolt holes 14a and 14b on the lower surface of the inserted bracket 8 so that the nut N
And a plurality of brackets 8 are arranged and fixed at predetermined intervals in the longitudinal direction of both frames 2a and 2b together with the driving body DP.

Then, the mounted driving body DP is inserted through a lead wire (not shown) from the output shaft MJ of the small motor M and one end of the support shaft 10a on one side, and is inserted into the bracket 8
Through the leg holding hole 8a to connect to a power source.

Subsequently, a belt (not shown) is hooked on the pulley MD of the driving body DP and the two grooves 3a at the end of the roller 3, and
The belts are alternately hooked on the grooves 3a of the adjacent rollers 3 to connect all the rollers 3.

As described above, according to the present invention, unlike the conventional driving section, the driving section is not installed so as to protrude greatly below the frames 2a and 2b, and the lower space can be widely used. When working around the conveyor, the work can be performed safely without being aware of obstacles below the frames 2a and 2b. Also, frame 2
The driving body DP can be mounted by using a part of the plurality of cross members 10 for connecting a and 2b at a constant interval.

In addition, the driving body DP is the cross member 10
, It is safely protected for workers.

A plurality of cross members 10 are connected at predetermined intervals in the longitudinal direction, and a specific cross member 10
Inside, the driving body DP in which the small motor M is incorporated is housed and mounted together with the cross member 10, so that the mounting operation of the driving body DP is facilitated.

Further, the circular recess 15 which is a fitting holding portion of the bracket 8 is provided with both frames 2a of a pipe having a substantially circular cross section.
Since it is adapted to be elastically pressed into the outer periphery of the frame 2b, there is no need to newly provide a mounting hole at the mounting position of the frames 2a, 2b, and the elastic force of the circular recess 15 can be used easily. It can be attached, and the assembling work can be simplified.

[0047]

According to the present invention, the following effects can be obtained.

(A) According to the first aspect of the present invention, the work of mounting the drive roller is facilitated, and even when working around the drive roller conveyor, the work can be safely performed without being aware of obstacles below the frame. Work can be done.

(B) According to the second aspect of the present invention, since the drive roller is mounted so as to be surrounded by the cross member, the drive roller is also safely protected for the operator.

(C) According to the third aspect of the present invention, the drive roller is mounted between the two frames in a state of being mounted on the support together with the cross member. Therefore, a new mounting hole is provided at a predetermined position of the both frames. There is no need to use the elastic force of the fitting and holding part, so that it can be easily attached.

[Brief description of the drawings]

FIG. 1A is a plan view of a roller conveyor constituted by a frame of a pipe having a substantially circular cross section in which a roller support device according to an embodiment of the present invention is used, FIG. 1B is a front view of the roller conveyor, (C) is a side view of the roller conveyor.

FIG. 2 is a sectional view taken along line AA of FIG. 1 (b).

FIG. 3 is an exploded perspective view showing a state in which a unit support block or a fitting support is attached to a fitting groove or an outer periphery of a frame.

4A is a plan view of the fitting support, FIG. 4B is a side view of the fitting support, and FIG. 4C is a partially enlarged view of FIG.

FIG. 5 is a sectional view of a frame.

6A and 6B are brackets for attaching a support leg or a cross member to a support frame, wherein FIG. 6A is a side view of the bracket, and FIG. 6B is a cross-sectional view taken along line BB of FIG.
(C) is a plan view of the bracket.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roller conveyor unit 2a, 2b Frame 3 Roller 3a Groove part 4 Support leg 4a, 4b leg 5 Unit support block 5a Locking projection 5b Depression groove 6a, 6b Roller shaft 8 Bracket (support) 8a, 8b Leg holding hole 9 Mounting and holding Tool 10 Cross member 10a, 10b Support shaft 11 Mounting part 12, 12a, 12b Concave groove 13 Square hole 14 Fitting groove 14a, 14b Bolt hole 15, 16 Circular concave part B Bolt DP Driver (drive roller) F Support surface G cut Notched groove H Screw hole IR Vertical rib K1, K2 Joint surface KH 'Side hole KH Engagement hole L Locking tool M Small motor MD Pulley MJ Output shaft N Nut NF Mounting surface PA Pipe body R Linear projection S1, S2 Fitting Surface r Linear groove

Claims (3)

[Claims] 1. A roller conveyor in which a plurality of rollers are arranged on frames arranged side by side, wherein a plurality of cross members are connected at predetermined intervals in a longitudinal direction between the two frames, and a plurality of cross members are provided. A roller conveyor, wherein a driving roller incorporating a motor is accommodated in a specific cross member among the members, and the plurality of rollers are driven by the driving of the driving roller. 2. The roller conveyor according to claim 1, wherein the cross member has a concave portion having an upward opening, and the drive member is accommodated in the concave portion so as to surround the driving roller. 3. A support body comprising a pipe having a substantially circular cross section, wherein both ends of the cross member are elastically fitted and mounted on an outer periphery of the pipe. The roller conveyor according to claim 1, wherein the roller conveyor is mounted on a roller.