JPH058250Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application The present invention relates to a top plate chain in which a number of links are connected with pins to form a chain, and a number of top plates for placing conveyed objects are attached to the links. In particular, this invention relates to improvements in the mounting structure of links and top plates.

Prior Art Conventionally, the fourth top plate chain has been used as a top plate chain suitable for conveying objects along a horizontal curved path.
A chain 1 as shown in FIGS. 1 and 5 with crescent-shaped top plates 2a and 2b attached thereto is often used. In this top plate chain, the front end of the link 3a is on the outside, the rear end of the adjacent link 3b is on the inside, and the clasp is connected with a connecting pin 4 to form the chain 1,
The top plates 2a, 2b are attached by caulking with rivets 5 or by welding at the portions of the front ends of the links that are joined together by the connecting pins 4.

However, when the links 3a, 3b and the top plates 2a, 2b are connected by caulking with the rivets 5 or by welding as described above, it is difficult to replace and restore the top plates 2a, 2b, and after long-term use. Therefore, if the top plates 2a, 2b become worn or damaged, the entire top plate chain must be replaced, resulting in an uneconomical situation.

In order to eliminate this drawback, Japanese Utility Model Application No. 101515/1987 was proposed, but since it required a protruding locking part to lock the front edge of the link on the bottom of the top plate,
The shape of the top plate is limited by the fact that it is made of synthetic resin, and especially when replacing the top plate, the connecting pins of the chain must be removed, and as a result, the chain must be temporarily cut. For this reason, it becomes necessary to adjust the tensioning device of the chain by loosening or tensioning it as an additional work.

In addition, all conventional top plate chains are good for traveling on curved roads in one horizontal plane, but when used in a transportation mode that requires bending in the vertical direction during travel, such as traveling in two horizontal planes, connecting pins and Even if the gap between the bushes was increased, the lower surface of the tip of the crescent-shaped top plate would interfere with the link, so there was a drawback that the two-stage horizontal curved road operation described above could not be performed.

In any case, the structure of this type of top plate chain has the restriction that the joint is limited to the clasp joint of the link attached to the top plate, and therefore must be riveted or connected with a connecting pin, and these restrictions This results in the above problem being derived from this.

Problems to be Solved by the Invention The present invention was provided to solve the above-mentioned problems, and is intended to solve the problems described above. is made possible.

The present invention also improves the conventional problem in which the top plate cannot be replaced without dividing the chain, and allows the top plate to be fixed with screws as desired, making it easy to replace the top plate. .

Means for Solving the Problems The present invention provides the above-mentioned means, in which a seat piece is provided in series at one end of the link to which the above-mentioned top plate is to be attached, and extends apart from above the outer surface of the other adjacent link; The top plate is mounted on the seat piece and attached with screws, and one end of the pin connecting the links is projected upward from the link surface and slid into the positioning hole provided in the top plate, thereby forming the top plate chain. was formed.

Effect: The present invention is capable of securing a sufficient gap between the lower surface of one end of the top plate and the outer surface of the adjacent link by installing the seat piece as described above at a high position and mounting the top plate on it. Because you can
It became possible to bend in the vertical direction during the operation, and the two-step horizontal curve operation became possible.

In addition, since the seat piece on which the top plate is mounted is extended to a higher level than the joint joint between the links and is sufficiently spaced from the outer surface of the adjacent link, there are no restrictions on the means for attaching the top plate. Enables removable assembly with screws,
Even when screwed, it was possible to prevent the tightening nut from interfering with the adjacent link. Furthermore, the top plate is replaceably attached to the seat piece with screws, and one end of the pin that connects the links projects upward from the link surface and slides into the positioning hole provided in the top plate. It reduces the load in the horizontal rotation direction applied to the screw attachment part, complements the screw attachment part and ensures sufficient strength, and the top plate can be extended arbitrarily to the front and back of the seat piece to attach the screws. Even if it overhangs, a space is formed between the front and rear adjacent links to ensure vertical bending. Therefore, it is possible to advantageously implement a structure in which the top plate is supported at a high position by the seat piece.

Embodiments Examples of the present invention will be described below with reference to FIGS. 1 to 3.

1, 2 and 3 show a part of an endlessly continuous top plate chain, 1 is a chain constituting the top plate chain, 2a,
2b illustrates the same crescent-shaped top plate.

The chain 1 consists of a large number of links 3a, 3b, and each unit link 3a, 3b is as shown in the figure.
It consists of a pair of parallel link plates 3a', 3b' with a wide spacing at one end and a narrow spacing at the other end. A step is provided in the section, the wide-spaced end side and the narrow-spaced end side are made into two stages, and the narrow-spaced end of the other link 3b is fitted into the wide-spaced end of one link 3a to form a kumite. A connecting pin 4 is inserted through the hand part to form a chain 1 in which each link is pivotally connected.

A seat piece 6a is provided extending from one end of the link 3a to which the top plate 2a is attached, that is, to a widely spaced end of one link plate 3a' to which the top plate 2a is attached.

Similarly, a seat piece 6 is attached to one end of the adjacent link 3b.
b.

The seat piece 6a of one of the adjacent links 3a extends upwardly from the outer surface of the other link 3b, that is, the outer surface of the link plate 3b' to which the top plate 2b is attached, and is spaced apart from this and extends from the outer surface of the other link 3b. It extends along the lower surface of the top plate 2a so as to be higher than the mutual kumite parts.

The seat piece 6b of the adjacent link 3b is also the seat piece 6a.
Extend them in the same way as above and arrange them so that they are on the same level.

As described above, the seat pieces 6a, 6b extend above the outer surface of the adjacent link plate 3b with a step from the part connected by the connecting pin 4, and the top plates 2a, 2b are attached as a whole. The link plates 3a' and 3b' are formed into a three-stage shape as shown in the figure.

Top plate 2a,
2b is installed. Screws 7 are used as means for integrally attaching the top plates 2a, 2b to the seat pieces 6a, 6b. The seat pieces 6a, 6b have a sufficient gap between the adjacent links, and the nut 9 can be tightened in the gap without interfering with the adjacent link 3b.

The top plates 2a, 2b can be assembled by the above-mentioned structure so that the above-mentioned screw fastening means can be employed, and also the above-mentioned caulking by rivets, welding, etc. can be performed without being restricted by the mounting means.

Top plates 2a, 2 are attached to the seat pieces 6a, 6b.
The structure in which the links 3a and 3b are mounted allows the links 3a and 3b to bend in the vertical direction without interfering with the top plates 2a and 2b.

Further, a positioning hole 8 is bored in the top plates 2a and 2b which are mounted and supported at a high level by the seat pieces 6a and 6b, and one end of the connecting pin 4 located at a distance from the above-mentioned mounting area is projected upward from the link surface. to form a positioning head 4a, and slide the positioning head 4a into the positioning hole 8, and then attach the top plate 2.
A and 2b are prevented from rotating.

Thus, the crescent-shaped top plates 2a, 2b
The convex curved side is attached to the seat pieces 6a, 6b, and the concave curved side is slidably fitted to the positioning head 4a of the connecting pin 4 so as to be freely removable. The curved portions are aligned with the concave curved portions of the other top plate 2b to form a series of conveyed object placement surfaces, and endless movement is possible on one or more horizontal planes with the convex curved side of the top plate facing forward. It will be done.

Effects of the invention As described above, the present invention has a top plate mounted on a seat piece extending apart from above the outer surface of the adjacent link, so that the lower surface of one end of the top plate and the outer surface of the adjacent link are connected to each other. Since a sufficient gap can be secured, the vehicle can bend vertically during the operation, making it possible to operate on the two-stage horizontal curve, which was difficult in the past.

In addition, since the seat piece on which the top plate is mounted is extended to be higher than the clasp joining area between the links and is sufficiently spaced from the outer surface of the adjacent link, there are no restrictions on the means for attaching the top plate. It is possible to assemble the top plate in a removable manner by screwing it in place, effectively preventing the tightening nut from interfering with the adjacent link even if it is screwed in place, and making it possible to appropriately replace the top plate when it is worn or damaged. .

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention,
Figure 1 is a plan view showing a part of the top plate chain, Figure 2 is a bottom view of the same, Figure 3 is Figure 2 A-A.
Line sectional views, FIGS. 4 and 5 show conventional examples;
The figure is a bottom view showing a part of the top plate chain, and FIG. 5 is a sectional view taken along the line B--B in FIG. 4. 1...Chain, 2a, 2b...Top plate, 3a, 3b...Link, 4...Connecting pin, 6
a, 6b... Seat piece.

Claims (1)

[Scope of utility model registration request] In a top plate chain, in which a large number of links are made into a clasp, the clasp parts are connected by connecting pins to form a chain, and a top plate for placing a large number of conveyed objects is attached to the links, one end of the link is , a seat piece extending apart from the top of the outer surface of the other adjacent link is provided in series, the above-mentioned top plate made of a separate component is placed on the outer surface of the seat piece, and is attached with a screw, and one end of the above-mentioned connecting pin is attached. A top plate chain that protrudes upward from the link surface and slides into positioning holes drilled in the top plate.