JPS5928971Y2 - chain - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of an alumina chain.

Conventionally, chains, such as the one in Publication of Utility Model Publication No. 53-3578, have a flat top surface and do not have a conveyance function, and if a load is placed on the top surface, the load will slide and fall due to the vibrations during transportation, so it has not been used as a means of conveying load. cannot be used.

The present invention was developed in view of the above-mentioned conventional circumstances, and provides a chain that can transport cargo reliably, does not require lubricating oil, can be used at high temperatures such as in furnaces, and does not cause chemical changes. This is what I am trying to do.

The basic structure to achieve this purpose is to make all the members made of alumina, and install a roller between a pair of opposing outer links and a pair of inner links, with a part of the periphery protruding from the lower end of the link. A semicircular or smaller notch is formed on both sides of the outer link, and a small notch is continuous to the small notch. A dog notch is bored in the center side with a radius of curvature larger than that of the outside link, and the shaft is inserted into the dog notch of the outer link, and the radius of curvature of the small notch is made on the contact surface with the outside link. An engagement shaft portion is formed with the same radius as the engagement shaft portion, a small notch is engaged with the engagement shaft portion, a step portion is formed protrudingly on the outer surface portion of the inner link sandwiched between the adjacent outer links, and the step portion is The distance between the side surface of the part and the side surface of the outer link is made narrower than the distance between the centers of the small notch and the dog notch, and a protrusion is made to protrude upward from the step, and the side surface of the protrusion and the inner and outer 1i+J 1 , 1 and the upper surface of the bag form a fitting space for the cargo.

An example of implementing the present invention will be explained below based on the drawings.
First, A is a chain body made entirely of 94% or more alumina.

Alumina is a substance that has properties such as high heat resistance, corrosion resistance, wear resistance, and scientific stability.

In the chain body A, the shaft 3 is inserted between the insertion holes 8 on both sides of the inner surface of the front and rear inner links 2 and the insertion holes 8' of the rollers 9, and the rollers 9 are interposed between the inner surfaces of the side inner links 2. At the same time, the outer link 1 is engaged with the shaft 3 projecting from the outer surface of the inner link 2 to form a continuous endless row chain or a row chain of a certain length.

The outer link 1 has a small notch 4 formed on both front and rear sides, and a small notch 4 continuous to the small notch 4 on the center side with a diameter larger than the inside radius of the small notch 4. A dog notch 5 is made.

The dog notch 5 is bored with approximately the same radius of curvature as the insertion holes 8, 8' of the roller 9 and the inner link 2, and the dog notch 5 and the insertion holes 9, 2 are similar to each other. The chain can be assembled and disassembled by inserting the shaft 3 across the shafts 8 and 8' or pulling it out from them.

The small notch 4 is continuously drilled in a semicircle or less than a semicircle on the left and right sides of the large notch 5, and the shaft 3 inserted into the dog notch 5 is moved left and right. An end portion 10 of the shaft 3 that engages the engagement shaft portion 6 and protrudes from the outer surface of the outer link 1.
is hooked onto its outer side 11 to hold the shaft 3 irremovably and form a chain connection.

The shaft 3 has a cylindrical shape slightly longer than the outer surfaces of the pair of opposing outer links 1, and is inserted into the roller 9 and the insertion holes 8, 8' of the inner links 2, respectively, to form the large notch 5 of the outer links 1. Further, an engaging shaft portion 6 is formed on the contact surface with the outer link 1 with the same radius of curvature as the small notch portion 4, and the engaging shaft portion 6 is inserted into the small notch portion 4. engage.

The roller 9 is interposed between the inner surfaces of the side inner links 2 via the shaft 3, and as shown in FIG. 5 is provided in the same circle slightly below half of the height of the outer links 2 and 1, and on the shaft 3 into which these 8 and 5 are inserted.
The roller 9 is inserted so that the lower end 12 of the roller 9 is positioned so as to protrude downward from the lower end of the outer links 2, 1 in the same circle, and the upper end 13 is located in the same circle than the upper end of the outer links 1, 2. Positioned at the bottom, it can not only be used as a well-known chain, but also be able to transport cargo, etc., on a flat surface such as a table.

The inner link 2 is interposed between the outer link 1 and the roller 9 with a shaft 3, and has a protrusion 14 protrudingly formed at the center of the upper surface and a stepped portion 7 at the center of the outer surface. Form.

When the chain of the present invention is used as a conveyance device, the protrusion 14 securely positions the load B and prevents the load B from moving due to vibration during transportation.
This is to support the inner link 2 so that it does not slide.
The first part is formed to protrude upward from the center part of the step part T and to be connected to the step part T.
As shown in the figure, the side surfaces and the upper surfaces of the inner and outer links 2 and 1 form a fitting space 15 that is facing forward.

The fitting space 15 prevents the cargo B from sliding and falling during transportation.

The stepped portion 7 is formed so as to protrude from the outer surface portion of the left and right inner links 2, maintaining a distance narrower than the center distance between the small notch portion 4 and the dog notch portion 5 from the side surface of the outer link 1, and As the outer link 1 moves from side to side, the engagement between the engagement shaft portion 6 and the small notch portion 4 is released, and the outer link 1 moves to the dog notch portion 5 to prevent the shaft 3 from falling off naturally. This controls the movement of 1.

Further, the side surface of the outer link 1 is formed into an arcuate lower part and an inclined upper part with a distance longer than the distance between the center of the small notch part 4 and the step part 7, so that the side surface of the outer link 1 can be rotated upwardly. Then, the inclined part hits the step 7, and an inclination angle between the outer link 1 and the inner link 2 with a degree of play is obtained, and the side of the outer link 1 and the step 7 move downward smoothly. Rotate the outer link 1 to a position where the distance between the small notch 4 and the dog notch 5 is longer than the center distance between the small notch 4 and the dog notch 5 (900 in the drawing), and then move the outer link 1 upward to remove the small notch 4. The engagement relationship with the engagement shaft part 6 is released, and the shaft 3 is moved to the dog notch part 5 and pulled out, so that the chain can be easily disassembled.

Also, when assembling it as a chain, after fitting the dog notch 5 to the shaft 3 into which the roller 9 and the inner link 2 are inserted while rotating 90 degrees with respect to the inner link 2, Installation is simple, as long as the small notch 4 is engaged with the portion 6 and the outer link 1 is returned to its original horizontal state.

In the present invention, as described above, the protrusion is made to protrude from the inner link, and the space for fitting the cargo is formed between the side surface of the protrusion and the upper surface of the inner and outer links, so that the cargo can be safely and reliably prevented from sliding and falling. It can be transported to

Moreover, since all the members are made of alumina, they can be easily combined to form an endless chain or a chain of a certain length without crimping or using other fasteners. Not only can the work time be reduced, but also the assembly can be easily done by hand without the need for caulking or tightening tools.

Furthermore, there is no need to use lubricating oil to prevent wear on the shaft attachment parts and ensure smooth linkage, making it difficult to use with metal chains as they are unsanitary and resistant to lubricating oil. In addition, alumina has excellent heat resistance and corrosion resistance, so metal chains can be transported in high-temperature furnaces where deformation and lubricating oil burn, or in chemical solutions that corrode and generate harmful gases. It can be used as a chain conveyor, and even if left as is, it will not rust and become unusable.

In addition, the shaft that supports the outer links, inner links, and rollers can be pulled out by tilting the outer links and inner links at a certain angle, and the chain can be easily disassembled. Even if a part of the chain is damaged, only that part can be easily repaired and replaced.

Therefore, the desired purpose can be achieved.

[Brief explanation of the drawing]

Figure 1 is a front view of the chain of the present invention with a portion cut away.
The figure is a partially cutaway plan view of FIG. 1, FIG. 3 is a sectional view taken along line XX, and FIGS. 4, 5, and 6 are perspective views showing the disassembly order. In addition, in the figure, A...Chain, 1...Outer link, 2...Inner link, 3...
Shaft, 4...Small notch, 5...Dog notch, 6...Engagement shaft, 7...Step, 9. ...Roller, B...Luggage, 1
4... Protrusion, 15... Fitting space.

Claims (1)

[Scope of utility model registration request] All members are made of alumina, and a roller is interposed between a pair of opposing outer links and a pair of inner links so that a part of its peripheral edge protrudes from the lower end of the link, and is mounted on a shaft to form an endless structure. A semicircle or a small notch of less than a semicircle is formed on both sides of the outer link, and a radius of curvature larger than the radius of curvature of the small notch continues from the small notch to the center side. A dog notch is drilled in the
Insert the shaft into the dog notch of the outer link, and form an engaging shaft part on the contact surface with the outside link with the same radius of curvature as the small notch, and make a small notch in the engaging shaft part. A stepped portion is formed protrudingly on the outer surface portion of the inner link sandwiched between the adjacent outer links, and the distance between the side surface of the stepped portion and the side surface of the outer link is determined by the center distance between the small notch and the dog notch. The chain has a protrusion projecting upward from the stepped portion, and the side surface of the protrusion and the upper surface of the inner and outer links form a space for fitting the cargo.