JP2002087562A - Roller conveyer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support device of a conveyer frame capable of sharing a conveyer frame regardless of a conveying condition arid simplifying assembling work of a cross member, a support leg, or the like for the frame. SOLUTION: A mounting part for interconnecting both ends of a cross member 10 for interconnecting both frames 2a and 2b, or leg holding holes 8a and 8b engaging and supporting the upper end of the support leg 4 are integrally formed, so that the assembling work of the cross member 10, the support leg 4, or the like for the frames 2a and 2b can be simplified. A bracket 8 is engaged with outer peripheries of both frames 2a and 2b of a round pipe elastically in a pressing state, in an elastically pressing state of a circular recessed part 15, so that new mounting holes do not need to be formed in a mounting places of the frames 2a and 2b, the elastic force of the circular recessed part 15 is used to allow easy mounting, and the assembling work can be simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller conveyor in which a mounting portion of a support leg or a connecting member for connecting the support legs is integrally formed with the frame, the support conveyor being fixed to a frame.

[0002]

2. Description of the Related Art In a conventional roller conveyor or the like, a frame supporting both ends of a roller needs to have rigidity to support the weight of a plurality of articles to be continuously conveyed. Square shaped steel with a structure was mainly used.

[0003] The two frames using such steel bars are connected at predetermined intervals by a plurality of cross members as connecting members to form a conveyor frame, and supporting legs are provided on the lower surface of the conveyor frame at predetermined intervals. And the conveyor body is constructed.

[0004] The conveyor body is composed of various unit conveyor bodies having a linear structure, an oblique structure, an arc structure, and the like.
When a plurality of rollers are connected and supported at predetermined intervals on both frames of the unit conveyor body, a single roller conveyor is constructed, and the roller conveyor layout is constructed by appropriately joining these roller conveyors. ing.

[0005]

However, in a conventional roller conveyor using a frame in which U-shaped steel members are juxtaposed in a back-to-back manner as a rectangular steel member, the roller shaft is fitted and supported by being dropped from above. The cutout grooves are arranged at predetermined intervals on the inner upper surface of the frame.

[0006] Such a notch groove has a size of a conveyed object,
The spacing and width are determined by the transfer conditions such as the weight and the transfer amount per unit time, and the cross members connecting the two frames and the support legs are also determined.

[0007] Therefore, in the maker, the intervals and dimensions of the notch grooves and the intervals and dimensions of the mounting holes for attaching the cross members and the support legs are exclusive dimensions, respectively. A large number of unit frames are prepared, and a large number of stocks are always kept. Therefore, a large storage space is required and inventory management becomes complicated.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and can share a conveyor frame irrespective of transfer conditions, thereby simplifying the work of assembling a cross member, a support leg and the like to the frame. It is an object of the present invention to provide a roller conveyor capable of performing the following.

[0009]

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. The frame support device is removably mounted, the frame support device has a mounting portion for connecting both ends of a connection member for connecting the two frames on opposite surfaces, and an upper end of the support leg is inserted and supported on a lower surface. It is characterized in that the part is formed integrally.
According to this feature, the mounting portion for connecting both ends of the connecting member for connecting the two frames or the fitting portion for fitting and supporting the upper end of the support leg is integrally formed. Etc. can be simplified.

In the roller conveyor according to the present invention, a fitting groove that opens downward is formed in the mounting surface of the frame in the longitudinal direction, and the nut member is moved in the longitudinal direction in a state where rotation is restricted in the fitting groove. It is preferable that the frame support device be configured to be movably inserted, screw a screw member to the nut member, and mount the frame support device on the mounting surface of the frame. With this configuration, the nut member is inserted into the fitting groove formed on the mounting surface of both frames so as to be movable in the longitudinal direction while the rotation is restricted. The conveyor frame can be shared regardless of the transfer conditions.

In the roller conveyor according to the present invention, it is preferable that the frame is formed of a pipe having a substantially circular cross section. In this case, since a simple, substantially circular pipe with a predetermined cross section having a predetermined strength is used for the frame of the conveyor, rigidity equal to or higher than that of conventional mold steel or the like is maintained, and mass production is performed by drawing or the like. Therefore, processing is easy and manufacturing cost is reduced.

In the roller conveyor according to the present invention, the frame has a locking portion formed on a circumferential surface of the outer periphery of the pipe along a longitudinal direction, and the frame support device can be fitted to a mounting surface of the outer periphery of the pipe. Preferably, an arcuate fitting surface is formed, and a locked portion is formed on the inner peripheral surface of the fitting surface so as to be non-rotatably engageable with the locking portion. This way,
A locking portion formed on the outer circumferential surface of the pipe whose both frames are substantially circular in cross section, and a locked portion formed on the inner circumferential surface of the fitting surface of the frame support device are removably engaged. Therefore, both frames can be supported by the frame supporting device so as not to rotate.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1A is a plan view of a roller conveyor using the roller conveyor according to one embodiment of the present invention, FIG. 1B is a front view of the roller conveyor, FIG. 1C is a side view of the roller conveyor, and FIG. A-A sectional view of FIG.
FIG. 3 is an exploded perspective view showing a state where a unit support block or a fitting support is attached to the fitting groove or the outer periphery of the frame.
4A is a plan view of the fitting support, FIG. 4B is a side view of the fitting support, FIG. 4C is a partially enlarged view of FIG. FIG. 6 is a cross-sectional view of the frame, FIG. 6 is a bracket for attaching a support leg or a cross member to the support frame, (a) is a side view of the bracket, (b)
FIG. 3A is a sectional view taken along line BB of FIG. 3A, and FIG. 3C is a plan view of a bracket.

First, FIGS. 1 (a) to 1 (c) show a roller conveyer unit 1, and the roller conveyer unit 1 has a frame 2a which supports a plurality of rollers 3 at predetermined intervals. , 2b and a pair of these frames 2a, 2b
b and the two frames 2a, 2b using the bracket 8 as a supporting device detachably attached at predetermined intervals and the bracket 8 detachably attached at these predetermined intervals.
And a pipe for mounting the frames 2a and 2b at predetermined intervals by attaching them to a bracket 8 which is not used for mounting the cross member 10 and a plurality of connecting members for connecting the members at regular intervals. And a supporting leg 4 including a pair of legs 4a and 4b.

The 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, 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 mounting surfaces F are formed on the lower surfaces of both frames 2a and 2b. Have been.

On this mounting surface F, a mounting groove 12 having a downward opening is formed along the longitudinal direction, and an outer frame forming the groove 12 projects into both hollow frames 2a and 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, inside the fitting groove 14, a unit support block whose outer shape is formed in a fan shape having an arc-shaped cross section, for example, is 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 that differs 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 the frames 2a and 2b is shown, and the bracket 8 has a circular concave portion 15 formed on the upper surface as a frame supporting portion to be fitted to the bottom surface of the frames 2a and 2b. A flat surface is formed on the bottom surface of the circular concave portion 15 so as to be able to contact the flat mounting surface F on the lower surface of both frames 2a and 2b. The linear concave grooves r corresponding to 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 and 14b for attaching the frames 2a and 2b via bolts are provided on both sides of the cylinder around the leg holding hole 8a. It is formed through.

The bracket 8 is mounted opposite to the lower surfaces of the frames 2a and 2b so that the mounting surface NF faces inward. The mounting surfaces NF of 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 body 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 drive 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 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.
A mounting holder 9 having a circular concave portion 16 serving as a frame support that can be fitted by using a circular portion on the outer periphery can be detachably mounted to desired positions of both frames 2a and 2b. .

That is, the mounting holder 9 is attached to 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 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.

Accordingly, 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 and 2b at predetermined intervals, and
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 drive section in the 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 are determined which meet the transport conditions. 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.

When the brackets 8 are mounted on the lower surfaces of the two frames 2a and 2b, the opening-side walls of the concave grooves 12 formed on the lower surfaces of the two frames 2a and 2b. Grooves 12a, 1
A nut N is inserted into 2b and is moved in the axial direction and is arranged 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 bracket NF mounting surface NF 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 driver 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 between 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, the circular recess 15
The bracket 8 is adapted to be elastically pressed into the outer periphery of the two frames 2a, 2b of the pipe having a substantially circular cross section in the elastically pressed state, so that the bracket 8 is newly attached to the mounting portion of the frames 2a, 2b. There is no need to provide a mounting hole, and the mounting can be easily performed using the elastic force of the circular concave portion 15.
Assembly work can be simplified.

Also, the cross member 10 is attached to the bracket 8.
The plurality of screw holes H or the leg holding holes 8a and 8b for mounting and supporting the upper ends of the support legs 4 are integrally formed, so that the cross members 10 for the frames 2a and 2b, the support legs 4 and the like are formed. Assembly work can be simplified.

In addition, since the driving body DP in which the small motor M is incorporated is mounted on the mounting portion of the bracket 8 together with the cross member 10 so as to be surrounded by the cross member 10, the mounting operation of the driving body DP is performed. Also becomes easier.

Further, the bracket 8 is connected to both frames 2a, 2a
(b) is mounted so as to be movable in the longitudinal direction in a state where the rotation is restricted with respect to the outer circumference of the pipe having a substantially circular cross section, so that the mounting position in the longitudinal direction can be appropriately selected, and the conveyor frame is independent of the transport conditions Can be shared.

Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and even if there are changes and additions without departing from the gist of the present invention. Included in the invention.

[0052]

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

(A) According to the first aspect of the present invention, the mounting portion for connecting both ends of the connecting member for connecting the two frames or the fitting portion for fitting and supporting the upper end of the support leg is integrally formed. Therefore, the assembling work of the connecting member, the support legs, and the like to the frame can be simplified.

(B) According to the second aspect of the present invention, the nut member is inserted into the fitting groove formed in the mounting surface of both frames such that the rotation of the nut member is restricted in the longitudinal direction. Therefore, the mounting position in the longitudinal direction can be appropriately selected, and the conveyor frame can be shared regardless of the transport conditions.

(C) According to the third aspect of the present invention, since a simple, substantially circular pipe having a predetermined cross section and having a predetermined strength is used for the frame of the conveyor, the rigidity is equal to or higher than that of the conventional mold steel or the like. Can be held and mass-produced by drawing or the like, so that processing is easy and manufacturing cost is reduced.

(D) According to the fourth aspect of the present invention, both the frames are formed on the outer circumferential surface of the pipe having a substantially circular cross section, and the inner circumferential surface of the fitting surface of the frame supporting device. Since the locked portion formed above is removably engaged, both frames can be non-rotatably supported by the frame supporting device.

[Brief description of the drawings]

1A is a plan view of a roller conveyor using a roller conveyor according to an embodiment of the present invention, FIG. 1B is a front view of the roller conveyor, and FIG. 1C 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 2a, 2b Frame 3 Roller 3a Groove part 4 Support leg 4a, 4b leg 5 Unit support block 5a Locking projection 5b Depressed groove 6a, 6b Roller shaft 8 Bracket (supporting device) 8a, 8b Leg holding hole 9 Mounting and holding Tool 10 Cross member (connecting 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 (frame supporting part) B Bolt DP Driver F Mounting surface G Notch groove H Screw hole IR Vertical rib K1, K2 Joint surface KH 'Lateral 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 (4)

[Claims] 1. A roller conveyor in which a plurality of rollers are arranged on frames arranged on both sides, wherein a frame supporting device is removably mounted on both frames, and the frame supporting devices are mounted on opposite surfaces. A roller conveyor, wherein a mounting portion for connecting both ends of a connecting member for connecting frames is provided, and a fitting portion for fitting and supporting an upper end of a support leg is integrally formed on a lower surface. 2. A fitting groove that opens downward is formed in the mounting surface of the frame in a longitudinal direction, and a nut member is movably fitted in the fitting groove in a state in which rotation is restricted in the fitting groove. The roller conveyor according to claim 1, wherein a screw member is screwed to the nut member, and a frame supporting device is mounted on a mounting surface of the frame. 3. The roller conveyor according to claim 1, wherein the frame is formed of a pipe having a substantially circular cross section. 4. The frame has an engaging portion formed along a longitudinal direction on a circumferential surface of an outer periphery of the pipe, and an arc-shaped fitting that can be fitted to a mounting surface of the outer periphery of the pipe on the frame supporting device. The roller conveyor according to any one of claims 1 to 3, wherein a mating surface is formed, and a locked portion is formed on the inner peripheral surface of the fitting surface so as to be non-rotatably engageable with the locking portion. .