JPH08268525A - Cantilever attachment type roller chain conveyor - Google Patents

Abstract

PURPOSE: To improve the traveling stability of a roller chain by receiving a cantilever load with a good balance in a cantilever attachment type roller chain conveyor provided with a projecting carrying attachment for supporting an article to be carried in one side of the roller chain. CONSTITUTION: Two rows of free rollers 3a and 3b are arranged along the advancing direction of a roller chain 1 and by providing guide rails 2a and 2b coming into contact with the free rollers 3a and 3b in the lower side of the free roller 3a close to a carrying attachment 9 and in the upper side of the free roller 3b far from the carrying attachment 9, a cantilever load is distributed in a good balance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cantilever type roller chain conveyor in which a transport attachment for supporting a transported article is provided so as to protrude on either the left or right side of the traveling direction of the roller chain. Is.

[0002]

2. Description of the Related Art A cantilever type roller chain conveyor is used as a fruit selection conveyor or the like.

By the way, in a cantilever attachment type roller chain conveyor, a transportation attachment for supporting a transported object by placing it or hooking it is arranged so as to protrude to one of the left and right sides in the traveling direction of the roller chain. It is provided in. Therefore, when the transported object is supported on the transport attachment, a rotational moment due to a cantilever load is generated on the roller chain, so the side of the roller chain on the side opposite to the transport attachment easily floats up,
There was a problem that the running of the roller chain became unstable.

Therefore, the present invention intends to improve the running stability of the roller chain by receiving the cantilever load of the roller chain in the cantilever attachment type roller conveyor in a well-balanced manner.

[0005]

SUMMARY OF THE INVENTION According to the present invention, free rollers of a roller chain in a cantilever attachment type roller chain conveyor are provided in two rows in the traveling direction of the roller chain, and guide rails are provided along a conveyor line. The lower surface of the free roller on the side closer to the carriage and the upper surface of the free roller on the side farther from the transport attachment are provided so as to contact each other.

It is also possible to form the outer periphery of the free roller in a V-shape and form a V-shaped groove in the guide rail into which the V-shaped free roller fits.

[0007]

When a cantilever load is applied to the roller chain, a downward stress is exerted on the free roller of the two rows of free rollers nearer to the transport attachment, and this stress is received by the guide rail on the lower surface side. Then, upward stress acts on the free roller on the side far from the transport attachment due to the rotational moment due to the cantilever load, and this upward stress is received by the upper guide rail.

Therefore, the guide rails on the upper and lower surfaces are
The free rollers in the row distribute the cantilever load and maintain it in a balanced manner. And since the upward stress acting on the roller chain due to the rotation moment due to the cantilever load can also be held, the roller chain does not float up,
Roller chain travel is stabilized.

Further, when the free roller having a V-shaped outer peripheral portion is fitted in the V-shaped groove of the guide rail, the lateral stress acting on the roller chain by the V-shaped groove can be held, so that the straight running property of the roller chain can be maintained. In addition, the guide roller for holding the lateral stress of the roller chain when the vehicle travels on a curve is not required.

[0010]

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

FIGS. 1 to 3 show a first embodiment of a cantilever attachment type roller conveyor of the present invention.

This roller chain conveyor comprises a roller chain 1 and guide rails 2 provided on the upper surface side and the lower surface side of the roller chain 1 along a transportation line of a transported object.
a and 2b.

The roller chain 1 includes a free roller 3a,
A roller link 4 with a guide plate for mounting 3b,
The pin links 5 are alternately connected.

The roller link 4 and the pin link 5 are
The pair of pin links 5 are on the outside and the pair of roller links 4 are on the inside. A bush 6 is fitted between the pair of roller links 4, and the bush 6 is connected by inserting a connecting pin 7.

The inner diameter of the bush 6 is formed to be larger than the outer diameter of the connecting pin 7, so that the roller chain 1 can be bent in a horizontal plane, that is, curved running.

On the outer surface of the bush 6, two free rollers 3a and 3b are rotatably mounted in parallel in a direction orthogonal to the roller link 4. A flat washer 8 is mounted between the two free rollers 3a and 3b.

The connecting pin 7 largely protrudes to one side of the roller link 4, and the protruding portion serves as a transport attachment 9 for supporting a transported object. The shape of the transport attachment 9 may be variously changed according to the transported object, and the transport attachment 9 may be formed on the outer surface of the roller link 4 instead of the connecting pin 7.

A guide rail 2 for guiding the upper and lower surfaces of the two free rollers 3a and 3b of the roller chain 1 is provided in the transportation line of the transported object on which the roller chain 1 is installed.
a and 2b are installed. The upper and lower guide rails 2
The widths a and 2b are formed so as to fit inside the guide links 5 of the roller chain 1, and the guide links 5 guide the side portions of the upper and lower guide rails 2a and 2b.
Are projected up and down. Upper and lower guide rails 2a, 2
Of b, about half of the upper surface of the lower guide rail 2a is
Projection surface 11a on which the transport attachment 9 side projects upward
And the transport attachment 9 is formed on the protruding surface 11a.
The free roller 3a on the side abuts. On the other hand, approximately half of the lower surface of the upper guide rail 2a has a protruding surface 11 on the opposite side of the transport attachment 9 side that projects downward.
The free roller 3b, which is formed on the side b, is in contact with the protruding surface 11b, which is remote from the transport attachment 9.

In the roller conveyor configured as described above, when the transported article is supported by the transport attachment 9, the cantilever load W is a downward stress applied to the free roller 3a near the transport attachment 9 and the transport attachment. 9 and the upward stress exerted on the free roller 3b on the side farther away. The downward stress applied to the free roller 3a is supported by the lower guide rail 2a, and the upward stress applied to the free roller 3b is supported by the upper guide rail 2b. The free roller 3a rotates in the normal direction, and the free roller 3b on the side far from the transport attachment 9
Will be reversed.

Next, FIGS. 4 to 6 show a second embodiment of the cantilever attachment type roller chain conveyor of the present invention.

This roller chain conveyor is similar to the first embodiment, and the roller chain 1 and the guide rails 2a, 2b provided on the upper surface side and the lower surface side of the roller chain 1 along the conveyance line of the transported object. Consists of.

The roller chain 1 includes a free roller 3a,
Two pairs of roller links 4 for mounting the respective 3b are arranged in parallel, and each pair of roller links 4 is provided with a pin link 5.
It is configured by connecting by.

The roller link 4 and the pin link 5 are
Two pairs of pin links 5 are arranged in parallel, a pair of roller links 4 is arranged inside each pair of pin links 5, and a bush 6 is fitted between each pair of roller links 4,
By inserting one connecting pin 7 into the bushes 6 of both sets, the roller link 4 and the pin link 5 of both sets are connected.

The inner diameter of the bush 6 is formed to be larger than the outer diameter of the connecting pin 7, whereby the roller chain 1 is formed.
The curve running is possible.

Free rollers 3a and 3b are rotatably mounted on the outer surfaces of the bushes 6 of each set arranged in parallel.

The connecting pin 7 is largely projected to one side of the roller link 5, and the protruding portion serves as a transport attachment 9 for supporting a transported object. The shape of the transport attachment 9 is not limited to this, as in the first embodiment.

Free rollers 3a arranged in the above two rows,
Guide rails 2a and 2b for receiving the two rows of free rollers 3a and 3b are provided on the upper and lower surfaces of 3b along the transportation line of the transported material.

The diameters of the free rollers 3a and 3b are formed to be shorter than the vertical lengths of the roller link 4 and the guide link 5, and the upper and lower guide rails 2a and 2b contacting the free rollers 3a and 3b are included in each set. It fits between the guide links 5.

In the roller conveyor of the second embodiment,
The cantilever load W when the transport attachment 9 supports the transported object is distributed to the two rows of free rollers 3a and 3b,
The stress applied to the free roller 3a on the side closer to the transport attachment 9 is received by the lower guide rail 2a, and the stress applied to the free roller 3a on the side farther from the transport attachment 9 is received on the upper guide rail 2b. ,
During traveling, the free roller 3a on the side closer to the transport attachment 9 rotates in the forward direction, and the free roller 3b on the side far from the transport attachment 9 rotates in the reverse direction.

Next, FIGS. 7 to 9 show a third embodiment of the cantilever attachment type roller chain conveyor of the present invention.

Also in this roller chain conveyor, similar to the first embodiment, the roller chain 1 and the guide rails 2a and 2b provided on the upper surface side and the lower surface side of the roller chain 1 along the conveyance line of the transported object. Consists of.

The roller link 4 and the pin link 5 of the roller chain 1 are fitted with a bush 6 between the pair of roller links 4 with the pair of pin links 5 on the outside and the pair of roller links 4 on the inside. It is connected by inserting the connecting pin 7 into.

The inner diameter of the bush 6 is formed to be larger than the outer diameter of the connecting pin 7, so that the roller chain 1 can travel along a curved line.

On the outer surface of the bush 6, rotatably,
Two free rollers 3a, 3 having a V-shaped outer periphery
b are mounted in parallel in a direction orthogonal to the roller link 4. A flat washer 8 is mounted between the two free rollers 3a and 3b. Further, the diameters of the two free rollers 3a and 3b are formed to be longer than the vertical lengths of the roller link 4 and the guide link 5, and the free rollers 3a above and below the roller link 4 and the guide link 5, respectively.
The outer peripheral portion of 3b projects.

The connecting pin 7 largely projects to one side of the roller link 4, and the projecting portion serves as a transport attachment 9 for supporting a transported object. The shape of the transport attachment 9 is not limited to this, as in the first embodiment.

The free rollers 3a arranged in the above two rows,
Guide rails 2a and 2b for receiving the two rows of free rollers 3a and 3b are provided on the upper and lower surfaces of 3b along the transportation line of the transported material. The upper and lower guide rails 2a,
Two rows of V-shaped grooves 12a and 12b into which V-shaped free rollers 3a and 3b are fitted are formed in 2b.

In the roller conveyor of the third embodiment,
When the transported object is supported by the transport attachment 9, the cantilever load W is dispersed by the two rows of the free rollers 3a and 3b,
The lower guide rail 2a receives the load applied to the free roller 3a closer to the transport attachment 9, and the upper guide rail 2b receives the load applied to the free roller 3b far from the transport attachment 9. ,
During traveling, the free roller 3a on the side closer to the transport attachment 9 rotates in the forward direction, and the free roller 3b on the side far from the transport attachment 9 rotates in the reverse direction. Further, in the third embodiment, the lateral stress received when traveling on a curve is
It can be received by the V-shaped grooves 12a, 12b of the guide rails 2a, 2b.

[0038]

As described above, according to the present invention, the cantilever load of the roller chain in the cantilever attachment type roller chain conveyor can be received by the two free rollers in a well-balanced manner. It is possible to improve running stability.

Further, the outer peripheral portions of the two free rollers are formed in a V shape, and a V-shaped groove into which the V outer peripheral portions of the free rollers are fitted is formed in a guide rail for guiding the two free rollers. As a result, the straight running performance is further improved, and the lateral stress generated when the roller chain travels in a curve can be received, so that the curve travel is also stabilized.

[Brief description of drawings]

FIG. 1 is a partially cutaway vertical sectional view of a first embodiment of a roller chain conveyor according to the present invention.

FIG. 2 is a front view showing a roller chain of the above embodiment.

FIG. 3 is a partially exploded perspective view showing a roller chain of the above embodiment.

FIG. 4 is a partially cutaway vertical sectional view of a second embodiment of the roller chain conveyor according to the present invention.

FIG. 5 is a front view showing a roller chain of the above embodiment.

FIG. 6 is a partially exploded perspective view showing a roller chain of the above embodiment.

FIG. 7 is a partially cutaway vertical sectional view of a roller chain conveyor according to a third embodiment of the present invention.

FIG. 8 is a front view showing a roller chain of the above embodiment.

FIG. 9 is a partially exploded perspective view showing a roller chain of the above embodiment.

[Explanation of symbols]

 1 Roller Chain 2a, 2b Guide Rails 3a, 3b Free Roller 4 Roller Link 5 Pin Link 6 Bushing 7 Connecting Pin 8 Plain Washer 9 Transport Attachment 10 Guide Part 11a, 11b Projecting Surface 12a, 12b V-Shaped Groove

Claims (2)

[Claims] 1. A cantilever attachment type roller chain comprising a roller chain and a guide rail of the roller chain provided along a transportation line of a transported object, wherein a transportation attachment is provided on one side of the roller chain. In the conveyor, the free rollers of the roller chain are arranged in two rows along the traveling direction of the roller chain, and the guide rails of the free roller on the lower side of the free roller on the side closer to the transport attachment and on the side of the free roller on the side far from the transport attachment. A cantilever attachment type roller chain conveyor, which is provided so as to contact with the upper surface side, respectively. 2. The free roller according to claim 1, wherein an outer peripheral portion of the free roller is formed in a V shape, and a V-shaped groove into which the V-shaped free roller is fitted is formed in upper and lower guide rails. A cantilever attachment type roller chain conveyor.