JPH0613914Y2 - Tunnel excavator tail packing - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a simple tailpacking that is attached to the tail circumference of a tunnel excavator in an articulated manner. Regarding this kind of unit tail packing for fastening packing materials to.

[Prior Art] Most of the conventional unit tail packings are horizontal U.
Inserting holes for the respective rivets into the upper and lower plate surfaces facing each other of the letter-shaped attachment and inserting the base of the packing material into the attachment, and then inserting the rivets into the upper and lower insertion holes. After that, these rivets are attached to the metal fittings to fix the packing material.

[Problems to be solved by the invention]

Therefore, in this way, the mounting holes are preliminarily drilled in the mounting hardware, a packing material is inserted into the mounting hardware, and a rivet is attached to each of the mounting holes, and then each rivet is welded to the hardware. Not only is there a great deal of work and the disadvantage of requiring extra members, but since the packing material is supported only by the rivets, there is a concern that it will often come out of the metal when the packing end is under strong pressure.

[Means for Solving Problems] The present invention is configured as follows in order to eliminate various disadvantages.

That is, a thick-walled rectangular steel plate is bent into an opening shape, each plate surface is punched inward to several places, and each inward tongue is provided with a mounting hardware, and between the opposing tongues of the metal. When the mounting metal object is sandwiched by inserting the packing material base consisting of stacked wavy line groups or nets, the packing material base is clamped from the upper and lower surfaces, and each tongue bites into the packing material layer. It is interlocked and fixed.

[Action effect]

Since the present invention is configured as described above, it does not require the conventional rivets, and accordingly, the perforations in the metal for fixing the rivets and the number of welding steps are also eliminated, but the tongue intervening in the packing material layer is eliminated. The piece is immobile because it is punched out from the attached metal piece, and because of its shape, it exerts a far greater deterrent force than the riveting, and the metal piece itself exerts a pressing action on both sides of the base of the packing and dust as a packing material. It has the effect of holding the inactive state.

However, since the packing material holding hardware according to the present invention can be obtained only by bending and punching a single member, it is robust and inexpensive, and has many advantages such as being extremely easy to assemble with the packing material. This is a very useful idea.

〔Example〕

A rectangular thick steel plate is bent into an opening shape and each plate surface a, b
Is attached to each of the inward tongue pieces t and t ', and the inwardly projecting tongue pieces t and t'are projecting inward. The base of the tail packing material P formed by stacking the plates is provided with protective plates F and F'on its upper and lower surfaces.
And the metal piece 1 is pinched as shown by the arrow in FIG. 1 to clamp the base of the packing material, and the tongues t and t'are interleaved in the packing material layer. In the figure, S is a sleeve piece hung on both sides of the attachment 1 and 2 is a tail portion of the excavator.

[Brief description of drawings]

FIG. 1 shows an embodiment, FIG. 1 is a perspective view of a mounting hardware according to the present invention, and FIG. 2 is a longitudinal sectional side view of a main part showing a state in which the tail packing of the present invention is attached to the tail circumference of an excavator. FIG. 3 and FIG. 3 are vertical front views taken along the line AA of the above. 1 is a mounting hardware, a and b are plate surfaces, t and t ′ are tongue pieces, P
Is a packing material.

Claims (1)

[Scope of utility model registration request] 1. A mounting member having a substantially rectangular metal plate bent in an opening shape and punched inward at several points on each plate surface to project each inwardly directed tongue piece. The base of the packing material is inserted between the tongues of each plate surface to clamp the mounting hardware to clamp the base of the packing material and the tunnel excavation in which the tongues are embedded in the packing material layer. Tail packing of the machine.