JPH05254624A - Roller conveyor for heavy load - Google Patents

Abstract

PURPOSE:To prevent the abrasion and chattering on the receiving surface of a roller shaft and facilitate the replacement of a drive side chain rail on which abrasion is hard, as for a roller conveyor for heavy load. CONSTITUTION:As for a roller assembly body 20 which is formed by assembling a roller 16 and a sprocket wheel 18 on a shaft 14, both the edges of the shaft 14 are supported by a bearing plate 24, and the bearing plate 24 is supported by a plate receiving plane 26 installed on the side walls 10A and 10B of a main frame 10, and a drive side chain rail 28 which supports the underside surface of the drive side chain 12A of a chain 12 is set in demountable manner from the lateral direction into a fitting recessed part 44.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heavy load roller conveyor.

[0002]

2. Description of the Related Art As a type of roller conveyor, a main frame having a pair of side walls that are open at the upper side and are parallel and opposed to each other in the line direction, and between the side walls of the main frame, along the side walls, The upper side is the drive side chain,
A chain arranged so that the lower side becomes a return side chain, and a roller assembly in which a roller and a sprocket wheel are rotatably attached to the same shaft,
There is a roller conveyor configured to mount the roller assembly between the side walls so that the sprocket wheel meshes with the drive side chain from above.

[0003]

In such a conventional roller conveyor, the roller assembly has a structure in which the lower sides of both ends of the shaft are chamfered to be a flat surface and are supported here, and the side wall is also provided. Is usually formed of aluminum, when the object to be transported by the roller conveyor is a heavy load, the receiving surface is easily deformed,
There is a problem that rattle is likely to occur during the operation of the conveyor.

When the sprocket wheel is attached to the drive side chain from above, the lower side surface of the drive side chain is supported from below by the drive side chain rail so that the chain does not escape downward. I am trying.

The drive-side chain rail is easily worn when the load to be conveyed by the conveyor is heavy, and must be replaced frequently.

The drive side chain rail in the conventional heavy load roller conveyor is made of iron and has a length divided into several parts in the chain moving direction. Since the structure is such that they are sequentially loaded and fixed in the longitudinal direction by pins, all pins must be removed before replacement, the chain rails must be removed in the conveyor transport direction, replaced with new ones, and then inserted again. However, when the chain rail is long, it is complicated, and since it is not fixed in the width direction, rattling is likely to occur.

The present invention has been made in view of the above-mentioned conventional problems, and provides a heavy load roller conveyor in which deformation of a main frame side wall-side receiving surface for supporting a shaft in a roller assembly is small. With the goal.

It is another object of the present invention to provide a heavy load roller conveyor in which the drive side chain rail can be easily replaced.

[0009]

According to a first aspect of the present invention, between a main frame having a pair of side walls that are open at the top and are opposed to each other in parallel to the line direction, and between the side walls of the main frame, the side walls are provided along the side walls. A chain arranged such that the upper side is a drive side chain and the lower side is a return side chain, and a roller assembly in which a roller and a sprocket wheel are rotatably attached to the same shaft. In the heavy load roller conveyor, wherein the roller assembly is mounted between the side walls so that the sprocket wheel meshes with the drive side chain from above, a pair of both ends of the shaft in the roller assembly is provided. Supported by the vertical bearing plate of
The bearing plates are mounted on the plate receiving surfaces formed upward on the opposing surfaces of the pair of side walls,
The above object is achieved.

Further, the pair of bearing plates may be integrally connected by a connecting member before and after the supporting roller assembly.

Further, the pair of bearing plates may support a plurality of roller assemblies.

According to a second aspect of the invention, between the main frame having a pair of side walls that are open at the upper side and are opposed to each other in parallel with the line direction, and between the side walls of the main frame, the upper side is along the side wall. A drive side chain, a chain arranged so that the lower side becomes a return side chain, and a roller assembly in which a roller and a sprocket wheel are rotatably attached to the same shaft, In a heavy load roller conveyor, the three-dimensional body is mounted between the side walls so that the sprocket wheel meshes with the drive side chain from above,
A lower surface of the drive-side chain is in sliding contact with the sprocket wheel, and a chain rail that holds the drive-side chain between the drive-side chain and the sprocket wheel is inserted into a fitting recess formed in one of the side walls, and the center side between the side walls The above-mentioned object is achieved by making it detachable in the lateral direction.

Also, in the second invention, a chain rail which is detachable from the side wall in the vicinity of the fitting recess and presses and fixes the drive side chain rail fitted in the fitting recess to the outside of the side wall. A presser foot may be provided.

Further, both ends of the shaft in the roller assembly are supported by a pair of vertical bearing plates, and the bearing plates are provided on the facing surfaces of the pair of side walls so as to face upward. You may make it attach to a surface.

[0015]

According to the first invention, both ends of the shaft in the roller assembly are supported by the pair of bearing plates,
Since this bearing plate is mounted on the plate receiving surface formed upward on the side wall of the main frame to attach the roller assembly, the area of the plate receiving surface on the side wall side is large, that is, the surface pressure is small. There is an effect that it becomes small and is difficult to be deformed even when carrying a heavy load object.

Further, when the roller assembly is replaced, the replacement work can be performed quickly by replacing the roller assembly together with the roller assembly in which the bearing plate is incorporated.

According to the second aspect of the present invention, the bearing plates that support both ends of the shaft of the roller assembly are integrally connected by the connecting members before and after the roller assembly, so that the roller assembly is assembled to the main frame. The rigidity can be increased and the roller assembly can be easily attached and detached.

According to the third aspect of the present invention, since the plurality of roller assemblies are supported by the pair of bearing plates, the roller assemblies can be preliminarily used as sub-assemblies for quick assembly and replacement. ..

Also, during maintenance, a large number of roller assemblies can be attached / detached at one time, which facilitates maintenance.

According to the second aspect of the present invention, the drive side chain rail, which is easily worn, can be detachably attached to the fitting recess formed on the side wall in the lateral direction. Can be easily removed, installed and replaced without

According to the fifth aspect of the present invention, in the second aspect of the present invention, since the chain rail retainer for pressing and fixing the drive side chain rail fitted in the fitting recess from the lateral direction is provided, the chain rail can be lengthened with the slip prevention pin or the like. The position can be securely fixed without the need for fixing in the direction.
Also, when replacing the chain rail, the chain rail can be easily removed and attached by detaching the chain retainer.

According to the sixth aspect of the present invention, in the second aspect of the invention, the bearing surface of the shaft in the roller assembly is less likely to be worn, and the maintenance is easier.

[0023]

Embodiments of the present invention will be described below with reference to the drawings.

In this embodiment, as shown in FIGS. 1 and 2, the main frame 10 is provided with a pair of side walls 10A and 10B which are open at the upper side and which face each other in parallel in the line direction.
And the side walls 10A, 10B of the main frame 10.
Between the chain 12 and the chain 12 arranged such that the upper side is the drive side chain 12A and the lower side is the return side chain 12B along the side walls 10A and 10B.
And a roller assembly 20 to which the roller 16 and the sprocket wheel 18 are rotatably attached, so that the sprocket wheel 18 meshes with the drive side chain 12A from above. In the heavy load roller conveyor 22 mounted between the side walls 10A and 10B, both ends of the shaft 14 in the roller assembly 20 are supported by a pair of vertical bearing plates 24, and The plate 24 is mounted on the plate receiving surface 26 formed upward on the opposing surfaces of the pair of side walls 10A and 10B.

At the lower position of the drive side chain 12A, the chain 1 that meshes with the sprocket wheel 18
Drive side chain 12A so that 2 does not escape downward
Iron drive side chain rail 28 with which the lower surface slides
Are arranged.

The bearing plate 24 supporting the roller assembly 20 is long in the chain moving direction and has side walls 10A,
It is made of a steel plate parallel to 10B and has a length of 1 m, for example, and supports a plurality of roller assemblies 20 in the length range.

Further, the pair of left and right bearing plates 24
As shown in FIG. 3, the roller members are connected by the connecting member 30 at the positions before and after the roller assembly 20 so as not to interfere with each other, and have a ladder-like frame structure in a plan view.

Therefore, when the roller assembly 20 is assembled to the main frame 10, a required number of roller assemblies are previously attached to the pair of bearing plates 24, 24 to form a sub-assembly as a whole, and the sub-assemblies are assembled together. It is assembled to the main frame 10 and removed during maintenance or replacement.

As shown in the enlarged view of FIG. 2, the roller assembly 20 includes a cylindrical member 19 having the sprocket wheel 18 formed at one end in the axial direction, and a pair of bearings 32 on both inner sides in the axial direction. The roller 16 is rotatably attached to the shaft 14 via a bush 34, and the roller 16 is rotatably attached to the outside of the tubular member 19 via a bush 34.

The bush 34 is attached to the outer periphery of the tubular member 19 via a key 36 so as to rotate integrally.

The pair of left and right bearing plates 24 are mounted on the plate receiving surface 26, and the bolts and nuts 3 are
The side walls 10A and 10B are fastened and fixed by the side walls 8A and 38B, respectively.

Reference numeral 40 in the drawing denotes a roller cover, which is provided with a hole 40A for projecting only the top of the roller 16 and covers the upper portions of the side walls 10A and 10B with the top of the roller 16 exposed. Further, reference numeral 42 in the drawing denotes a side guide which holds the roller cover 40 and also serves as a guide for the conveyed load.

The drive-side chain rail 28 is mounted by being fitted into a fitting recess 44 formed on the inner surface of the side wall 10A, and is fixed laterally outward from the center side of the main frame 10. It is pressed down by the presser 46, positioned, and fixed in place in the longitudinal direction.

The fitting recess 44 allows the drive side chain rail 28 to be attached and detached from the center side of the main frame 10, and the chain rail retainer 46 is
The drive side chain rail 28 is pressed in with a pressing margin.

Reference numerals 48A and 48B in the drawing tighten the chain rail retainer 46 to the side wall 10A so that the chain rail retainer 46 can be attached to the drive side chain rail 2.
8 shows bolts and nuts for pressing 8.

Below the drive side chain rail 28 and the chain rail retainer 46, a chain running space 50 is formed in the longitudinal direction of the chain, the chain running space 50 opening to the outside (left side in FIG. 2).

The return side chain 12B of the chain 12 runs in the chain running space 50.

The outer end of the chain running space 50 is
It is covered by a removable cover plate 52.

Chain space running space 50
In the lower position of the return side chain 12B, a plastic return side chain rail 54 is arranged,
The return side chain 12B is configured to slide on the return side chain rail 54.

For the chain 12, as shown in FIG. 1, from the motor 58 to the sprocket wheel 6
The rotation is transmitted to the sprocket wheels 68, 68 corresponding to the left and right chains 12 through the 0, the chain 62, the sprocket wheel 64, and the rotation shaft 66, and the chain 12 is wound around the sprocket wheel 68. The chain 12 is adapted to be driven. Reference numeral 70 in the figure denotes an idle sprocket.

The main frame 10 has, for example, a length of 5 m as one unit, and a plurality of units are connected as necessary, and the main frames 10 are arranged in parallel as shown in FIG. Three or more columns are arranged in parallel.

At this time, each unit is the base 11 of FIG.
Sequentially fixed on top and aligned longitudinally by the cover plate 52 and / or the required connecting plate.

If necessary, in order to connect a plurality of units in the longitudinal direction, pins are driven into a plurality of pin holes 72 formed in the end faces in the longitudinal direction of each unit, and the units are sequentially aligned by the pins, And connect.

The pin hole 72 on the end face of the terminal unit serves as a screw hole for mounting an end face cover (not shown).

In the above embodiment, when the roller assembly 20 is assembled or replaced, the roller assembly 20 is assembled or replaced for each unit previously assembled in the bearing plate 24. The same applies during maintenance.

Further, since the drive side chain rail 28 to which a heavy load is applied is made of iron, wear is reduced and durability is improved. Furthermore, when replacing the drive side chain rail 28, the chain rail retainer 46 can be removed and the drive side chain rail 28 can be easily removed laterally from the fitting recess 44. Also, the attachment of a new drive side chain 28 is extremely easy.

Further, since the chain rail retainer 46 is previously arranged with a retaining allowance, the bolt / nut 48
The drive side chain lane 28 is securely fixed in the width direction and the longitudinal direction by tightening with A and 48B.

Further, in this embodiment, since the bearing plate 24 is formed in a plate shape long in the chain traveling direction and is designated by the plate receiving surface 26, the plate receiving surface is supported even with a heavy load. It is possible to prevent wear and rattling of 26.

Further, the roller 19 and the sprocket wheel 18 are provided with bearings 32, 3 arranged inside them.
Since it is configured to be rotatably supported by the shaft 14 by means of 2, the load applied to the bearing can be dispersed without increasing the device volume.

Further, the return side chain 12B of the chain 12 has a chain running space 5 which is open to the outside.
0, and the chain traveling space 50 is
Since it is covered by the detachable cover plate 52, it is extremely easy to assemble the chain and the maintainability can be improved.

In the above embodiment, the bearing plate 24 is
The length of m is set to support a plurality of roller assemblies 20 in this length range, but the present invention is not limited to this, and one bearing plate 24 corresponds to one roller assembly 20. The bearing plate 24 may have an arbitrary length of 1 m or more to support a larger number of roller assemblies 20.

In the above embodiment, the drive side chain rail 28 is fixed by the chain rail retainer 46, but the present invention is not limited to this. For example, the drive side chain rail 28 is Alternatively, the bolts may be directly fitted and fixed in the recessed portions 44 by bolts.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a heavy load roller conveyor according to the present invention.

FIG. 2 is an enlarged cross-sectional view showing a main part of the same embodiment.

FIG. 3 is an enlarged perspective view showing the vicinity of a roller top portion of the embodiment.

[Explanation of symbols]

 10 ... Main frame, 10A, 10B ... Side wall, 12 ... Chain, 12A ... Drive side chain, 12B ... Return side chain 14 ... Shaft, 16 ... Roller, 18 ... Sprocket wheel, 20 ... Roller assembly, 22 ... Heavy load roller Conveyor, 24 ... Bearing plate, 26 ... Plate receiving surface, 28 ... Drive side chain rail, 30 ... Connecting member, 44 ... Fitting recess, 46 ... Chain rail retainer, 48A, 48B ... Bolt / nut.

Claims (6)

[Claims] 1. A main frame having a pair of side walls that are open at the upper side and are opposed to each other in parallel to the line direction, and between the side walls of the main frame, along the side walls, the upper side is a drive side chain and the lower side is a chain. And a roller assembly having a roller and a sprocket wheel rotatably attached to the same shaft, the chain being arranged so that the side thereof is a return side chain. In a heavy load roller conveyor mounted between the side walls so that a wheel meshes with the drive side chain from above, both ends of the shaft in the roller assembly are supported by a pair of vertical bearing plates. At the same time, the bearing plate is mounted on the plate receiving surface formed upward on the opposing surfaces of the pair of side walls. Roller conveyor for heavy load to be collected. 2. The heavy load roller conveyor according to claim 1, wherein the pair of bearing plates are integrally connected by a connecting member before and after the supporting roller assembly. 3. The heavy load roller conveyor according to claim 1 or 2, wherein the pair of bearing plates support a plurality of roller assemblies. 4. A main frame having a pair of side walls that are open at the upper side and are opposed to each other in parallel with the line direction, and between the side walls of the main frame, along the side walls, the upper side is a drive side chain and the lower side is a chain. And a roller assembly in which a roller and a sprocket wheel are rotatably attached to the same shaft, and a plurality of the roller assemblies are attached to the sprocket. As the wheel meshes with the drive side chain from above, in the heavy load roller conveyor that is mounted between the side walls, the lower surface of the drive side chain is in sliding contact, and between the sprocket wheel, Insert the chain rail that holds the drive side chain into the fitting recess formed on one of the side walls, A heavy duty roller conveyor characterized by being detachable from the center side in the lateral direction. 5. The chain rail according to claim 4, wherein the chain rail is detachably attached to the side wall in the vicinity of the fitting recess, and the drive-side chain rail fitted in the fitting recess is pressed and fixed to the outside of the side wall. A roller conveyor for heavy loads, which is provided with a presser foot. 6. The roller assembly according to claim 4, wherein both ends of the shaft are supported by a pair of vertical bearing plates, and the bearing plates are provided on opposite surfaces of the pair of side walls. A heavy load roller conveyor, which is mounted on a plate receiving surface formed upward.