JPS5977146A - Method for jointing cogged belt - Google Patents

Abstract

PURPOSE:To provide simple and quick jointing of a cogged rubber belt when it is broken, by trimming predetermined lengths and widths at both ends of the belt so that rectangular projections are formed there, and using a special shaped jointing metal fitting, with the ends of the belt butted against each other. CONSTITUTION:The side portions of each end of the belt are trimmed by predetermined lengths and widths so that a rectangular projection 1 is formed, wherein the cog portion 3 is embedded with a pipe 4 of iron, aluminum alloy, or plastic, the pipe being disposed as close to the tension members 2 as possible to provide a good power transmission capability. A jointing metal fitting (a) made of iron, aluminum alloy, or plastic, 0.5-3.0mm. thick, and being of the size not exceeding the width of the belt, is used for jointing the belt with a plurality of bolts, each thereof being passed through the bolt hole 7 provided in the locking portion 5 of the metal fitting (a) and securely screwed into the hole provided in the pipe 4 in the cog portion 3.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for jointing a toothed end belt as an emergency measure that can be repaired on the spot when a belt breakage or tooth loss occurs while the belt is running.

The conventional method of jointing a toothed belt is to make the leading edge of the belt uneven and engage each other, and to fasten the two ends together, a connecting pin is inserted into the toothed part in a lateral direction perpendicular to the belt. There is a method, but this method requires a lot of effort to form both ends of the belt into a convex and convex shape, and has the drawback that it requires a large number of connecting pins (several tens of teeth) in order to maintain the strength of the belt. Amputation or tooth loss 1
Although it cannot be said that it is sufficient as an emergency measure.

The present invention focuses on this problem and improves the conventional method of jointing a toothed belt by simply abutting both ends of the belt and connecting the abutted parts with a specially shaped joint fitting, thereby making the joint operation easier and faster. At the same time, it is an object of the present invention to provide a hanging joint method that maintains the conventional joint efficiency and prevents bulges and other damage to attached equipment.

That is, the present invention is characterized by cutting and removing the front end side of a toothed belt embedded in a rubber elastic body in a row of low-elongation, high-strength tensile ropes to a predetermined width and length. In this method, a rectangular protrusion is formed, a pipe is inserted into the teeth of the protrusion, the protrusions are abutted against each other, and the abutted parts are connected with a joint fitting.

The present invention will be further explained below with reference to the accompanying drawings.

Fig. 1 is a perspective view of a rectangular protrusion of a toothed end belt in the uninvented method, Figs. 2 and 4 are perspective views of a joint fitting used in the inventive method, and Figs. 3 and 5 are in accordance with the present invention. 1 is a diagram illustrating each embodiment of a joint method according to the invention.

6 is a partial side view of FIG. 5, and FIGS. 7 to 9 show various modified embodiments of the yet-to-be-invented method.

Below, each of these figures will be explained one by one. First, in FIG.
A pipe (4) made of an alloy such as iron or aluminum or a synthetic resin is embedded in the tooth portion (3) of the pipe 11 as close as possible to the tensile member (2) in order to obtain a good load transmission ability.

The pipe (4) should normally be inserted horizontally at the center of the belt teeth (3), and its size is preferably 1 to 12% depending on the strength of the belt.

! Figure 2 is an example of a metal fitting used to butt the rectangular protruding parts +11 at both ends of the belt as described above and join the abutted parts with a shimmed fitting (aJ).
is a pair of inverted U's with bolt holes (7) formed in a portion of each tip.
It is constructed by connecting and integrating the upper part of the letter-shaped locking member (5) with a support plate (6), and is usually made of an alloy such as iron, aluminum, or synthetic resin, and has a shape with a thickness of 0.5 to 3.0 mm. %, the width is such that the joint fittings do not protrude beyond the belt width. It is preferable that the pitch of the joint metal fittings is slightly shorter than the pitch of the belt teeth, since when a jointed belt is wound using the joint metal fittings, the engagement becomes long.

Next, FIG. 3 shows a joint state in which the end belts as shown in FIG. 1 and the joint fittings as shown in FIG. 2 are used to connect the joints. As is clear from the figure, this joint method involves the inner rectangular protrusion +I+ of the end belt.
(11 are butted against each other, and the joint fittings (aJ are
1 and the teeth (3) of the end belt are inserted and fixed into the holes of the pipe (4) and jointed.

4 to 6 show joint fittings and joint methods according to further modified embodiments of the above joint method. This method is generally desirable to use when the belt pitch is large.

The joint fittings (b) shown in Fig. 4 have symmetrical curved locking pieces (15
) are partially folded together at the center to form a locking plate on one side, which is placed on both sides of the end belt, and the center portion of the locking plates is inserted into the bolt hole θ of the U-shaped support plate θ6). Connect and integrate them and fix them with bolts 08).

The material, thickness, and width of this joint fitting are the same as those shown in FIG. 2 above.

FIG. 5 shows a state in which the end belts are connected using the joint fittings shown in FIG. 4, and the joint method is as follows.

(10) are butted against each other, and the joint fitting (b) is inserted into the hole of the pipe (4) of the tooth part (13) of the end belt using 181 to secure the joint.

The characteristic of this joint method is that it is easy to bend when the pulley engages, and it engages well, but when tension is applied, the sixth
As shown in the figure, the joint part tends to deform into a dogleg shape. However, this reduces the width of the support plate (16) to the previous second width.
This can be prevented by making the width wider than the width of the smeared metal fitting support plate (6) shown in the figure.

7 to 9 illustrate a joint method according to another embodiment of the present invention used for periodic transmission of relatively low loads.

In this method, all or every few teeth of the toothed belt teeth (23) are connected to pipes (made of iron, aluminum, etc. alloys, or synthetic resin).
24) is embedded in the belt, and if the embedded belt breaks or loses a tooth at a certain part, use the spare teeth (25) for repair.
) with the tooth-missing finger part, and use a plurality of the conventional joint fittings (aJ) shown in Fig. 2 and perform the same operation as shown in Fig. 9 to join as shown in Fig. 9.

Note that the joint methods described above are selected and applied as appropriate depending on the respective aspects.

As described above, the uninvented method for jointing a toothed belt joins both ends of a rubber toothed belt to a predetermined width.

This is a method in which a rectangular protrusion is formed by cutting and removing a predetermined length, and the protrusions are abutted and connected using specially shaped joint fittings, and has various advantages as follows.

fi+ Joint operation is easy, and when cutting the belt, the joint can be easily and quickly joined using the joint fitting.

(2) Joint efficiency can be maintained as before.

(3) Be/l/) Since the cut is made to a thickness greater than the tip m + the thickness of the joint metal fitting, damage to the stilt equipment due to contact with the joint metal fitting can be prevented.

(4-inch long open belt can be cut at appropriate joints to make an endless belt of any length.

etc.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a toothed end belt rectangular protrusion in the method of the present invention, Figs. 2 and 4 are perspective views of a joint fitting used in the uninvented method, and Figs. 3 and 5 are respectively FIG. 6 is a partial side view showing the mode of use of FIG. 5, and FIGS. 7 to 9 are perspective views of other modified embodiments of the method of the present invention. . (aJ (bJ...Joint fitting. [+1. (101...Rectangular protrusion -+3+, (+
a+, (231... protruding tooth part. +4), (24+... pipe. [51-°° inverted U-shaped locking member. [61, (IQI... support plate. (1 phrase...・Curved locking piece. Fig. 1 ff 13] 8 Fig. 4 Fig. 5

Claims (1)

[Scope of Claims] l A toothed belt in which low elongation, high strength tensile ropes are embedded in parallel in a rubber elastic body is cut at a predetermined width and a predetermined length to form a rectangular shape. A method for jointing a toothed belt, which comprises forming a protrusion, inserting a pipe into the teeth of the protrusion, abutting the protrusions against each other, and connecting the abutted parts with a joint fitting. 3. The toothed belt according to claim 1, wherein the joint metal fitting is a metal fitting in which the upper parts of a pair of inverted U-shaped locking parts forming L-shaped bolt holes at their respective ends are connected and integrated by a support plate. joint method. 3 A locking plate formed by overlapping bilaterally symmetrical curved locking pieces in the center of which the joint metal fittings form bolt holes at their tips is placed on both sides, and a pair of these are supported in a U-shape at the center. The method for jointing a toothed belt according to claim 1, wherein the joint fittings are integrally connected to each other by plates.