JPH0216122Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a grate connection rod for a chain stoker used for solid fuel combustion, garbage and sludge incineration, etc.

(Prior Art) As shown in FIGS. 4 and 5, the swing type chain stoker 1 has, for example, a cross-shaped upper surface,
A grate piece 2 having horizontal holes 3 on the side is connected to the horizontal holes 3.
By inserting the connecting rods 4 through the connecting rods, the connecting rods are closely connected alternately with narrow gaps.
This chain stoker 1 includes receiving rollers 5 provided at predetermined intervals and gradually inclined positions,
5..., it is partially fixed with a slight slack between the receiving rollers 5, and moves downward while swinging the processed material on the chain stoker 1 by forward and reverse rotation of the receiving rollers 5 within a predetermined range. It burns while burning. Note that both ends of the connecting rod 4 and the grate pieces 2 on both sides are fixed by appropriate means.
6 is a furnace wall. Note that 2a is an auxiliary grate piece.

As is clear from the above description, in the chain stoker 1, each grate piece 2 is a small piece and there is a gap between them, so thermal deformation does not accumulate. However, since the connecting rod 4 is a single long piece of material, the grate structure and combustion conditions can cause the grate surface to overheat, causing the connecting rod 4 to elongate significantly, and in some cases to the furnace wall 6 or to the connecting rod. The rod 4 itself is damaged, and since both ends are fixed to the grate piece 2, the grate width is partially expanded, causing the chain stoker 1 to operate under an overload.

Therefore, as a method to eliminate the above problem,
Japanese Utility Model Publication No. 58-42751 proposes a grate connection rod that absorbs thermal expansion. That is, as shown in FIG. 6, the connecting rod 4 is divided into two parts near the center, and this divided part has an overlapping length extending over several grate pieces 2, and the cross section of this overlapping part is With phase cutouts 7a and 7a having the same shape as the original rod,
A gap b corresponding to the thermal expansion margin in the longitudinal direction of the connecting rod 4 is provided in this phase notch.

(Problems to be Solved by the Invention) Incidentally, in the connecting rod 4, the phase notches 7a, 7a are mutually free ends, and their outward displacement is not restricted in any way. Therefore, within the range where the tip of the phase notch 7a is located within the horizontal hole 3 of the grate piece 2, even if the connecting rod 4 expands or contracts, the phase notch absorbs this, but the tip of the phase notch 7a If the connecting rod 4 is located between the grate pieces 2, as shown in FIG. 7, it may come into contact with the sides of the grate pieces 2, and the thermal expansion of the connecting rod 4 cannot be absorbed smoothly.

Although the present invention has a split structure for the connecting rod, it is designed so that the split part does not displace outward.
It is an object of the present invention to provide a grate connecting rod which eliminates the above-mentioned drawbacks of the conventional grate.

(Means for Solving the Problems) The grate connecting rod according to the present invention is provided by dividing the rod into at least two parts, and connecting the opposing part of the divided rod with a short rod for small diameter connection coaxial with the divided rod.
This short rod is slidably covered and telescopically connected with a connecting ring having the same diameter as the split rod.

(Example) Next, the present invention will be explained with reference to drawings which are examples.

FIG. 1 shows a first embodiment, in which the connecting rod 4 is divided into at least two parts, and the divided rods 10, 10
A hole 11 is bored in the opposing portion of the hole 11, and a connecting ring 12 is formed at the outer periphery of the hole 11. and,
A short connecting rod 13 is slidably interposed in the hole 11, and an expansion absorption allowance α is left between the opposing connecting rings 12, so that the connecting rod appears to be one.

FIG. 2 shows a second embodiment, in which the short connecting rod 13 is formed coaxially with the opposing parts of the split rods 10, 10, and the short connecting rod 13 is connected to a separate member having the same shape as the connecting rod 4. The connection ring 1 is
It is inserted through the hole 11 of No. 2.

FIG. 3 shows a third embodiment, in which the connecting short rod 13
to one of the split rods 10, and also to the connecting ring 1
2 are integrally provided on the other split rod 10. Note that 14 is a chamfered portion.

(Effects) Since the present invention has the above-described configuration, the outward displacement of the connecting ring is restricted by the presence of the connecting short rod, and only axial displacement is possible. Therefore, even if the end of the connecting ring is located within the spacing between the grate pieces, it will not come into contact with the side walls of the grate pieces and the absorption of thermal expansion will be hindered.

In addition, in order to prevent dust and fine powder of ash from entering the hole of the connecting ring and obstructing the movement of the connecting short rod, a through hole 15 is provided at the bottom of the hole 11 as shown in the figure. These fine powders may be allowed to fall.

[Brief explanation of drawings]

1 to 3 are longitudinal sectional views of the main parts of the grate connecting rod according to the present invention, FIG. 4 is a plan view of the chain stoker, FIG. 5 is a side view of FIG. 4, and FIG. 7 is a sectional view showing the relationship between the conventional connecting rod and the grate, and FIG. 7 is a sectional view showing the relationship between the connecting rod and the grate in FIG. 6. 1... Chain stoker, 2... Grate piece, 3
... hole, 4 ... connection rod, 10 ... split rod, 11 ... hole, 12 ... connection ring, 13 ...
Short rod for small diameter connections.

Claims (1)

[Claims for Utility Model Registration] (1) In a chain stoker grate connecting rod having both ends fixed to grate pieces, the rod is divided into at least two parts, and the opposing parts of the divided rod are called split rods. A grate piece connection for a chain stoker characterized by a coaxial short rod for small diameter connection, the short rod being slidably covered and telescopically connected with a connecting ring having the same diameter as the split rod. Rod. (2) The chain stoker according to claim 1 of the utility model registration, characterized in that the connecting ring is integrally provided on the opposing part of the split rod, and the short rod is constituted by a separate member. Grate connection rod. (3) The chain stoker according to claim 1 of the utility model registration, characterized in that the short rod is integrally provided at the opposing portion of the split rod, and the connecting ring is constituted by a separate member. Grate connection rod. (4) The chain according to claim 1 of the utility model registration claim, wherein the connecting ring is integrally formed with one of the split rods, and the short rod is integrally formed with the other split rod. Stalker grate connection rod.