JPS6040668Y2 - Joint joint device for secondary cement products - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a joint device for joints of secondary cement products used in open and underground waterways.

The object of the present invention is to provide a joint device for joints of secondary cement products that provides sufficient strength at the joints and allows for extremely easy attachment of joint material to the joint end faces.

The present invention will be explained below based on illustrated embodiments.

FIG. 1 is a perspective view showing a joint part of a secondary cement product A used for waterways.

A mounting groove 3 is provided approximately in the widthwise direction of the joining end surface 1 of this secondary cement product A in order to attach a band-shaped joint material 2 thereto.

A joint material 2 made of elastic rubber or the like is disposed in this mounting groove 3.

Further, reference numeral 4 indicates an anchor having a locking portion 5.

The anchor is attached to the side wall 6 near the joint end surface 1 of the product A,
They are each buried so as to be inclined from the inside of the side wall 6 toward the surface side toward the joint end surface A.

By burying it at an angle in this manner, it becomes possible to sufficiently cope with the tensile force applied in the longitudinal direction.

Next, a description will be given with reference to FIG.

Are there bolts in the buried locking parts 5, 5? a, 7b are inserted, and the joint plate 8 is inserted by these bolts 7a, 7b.
is connected across the locking portions 5, 5.

Further, reference numeral 9 indicates a tightening member.

The tightening member 9 has an oblique elongated hole 10 that extends obliquely and substantially perpendicularly to the joint plate 8.

This attachment is carried out by passing one bolt 7a through the inclined elongated hole 10 and through the hole 11 of the joint plate 8, and then screwing this bolt 7a into the locking portion 5.

Although the drawing shows a joint device attached to one side wall 6 of the cement product A, it is assumed that a similar joint device is also attached to the other side wall.

In the above, the state of use of the present invention will be explained.

When the cement products A and A are not tightened at the joint, the tightening member 9 is in the state shown by the two-dot chain line in FIG.

From this state, an operating rod (not shown) is brought into contact with the pressing portion 12 of the tightening member 9, and the tightening member 9 is slid downward.

Then, the length L between the locking parts 5, 5 becomes shorter by the width H from end to end of the inclined elongated hole 10, and the joint surfaces of the cement products A, A are firmly tightened. .

Thus, the present invention has the above configuration.

The joint joint device according to the present invention provides the following effects.

(1) A band-shaped joint material is placed in the widthwise center of the joint end surfaces of the pair of cement products, so after joining, this joint material will not be exposed to the outside, preventing damage to the joint material. It can be prevented.

(2) Since the anchors for fixing the locking portion to the side wall of the cement product are buried so as to be inclined from the inside of the side wall toward the surface side toward the joint surface, each anchor can sufficiently withstand tensile force.

(3) Since a tightening member with oblique long holes is used,
It can be tightened easily and firmly.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the bonding surface of secondary cement products, Figure 2
The figure is an exploded perspective view showing the coupling device according to the present invention, Fig. 3 is a perspective view of an anchor with a locking part, Fig. 4 is a cross-sectional view showing a device using the coupling device according to the present invention, and Figs. 5 a and b. FIG. 6 is a schematic diagram showing the contact state of the joint material, and FIG. 6 is a schematic diagram showing the operating state of the tightening member. A: Secondary cement product, 1: Joint end surface, 2: Joint material, 3: Mounting groove,
4... Anchor 5... Locking part, 6...
...Side wall, 7...Bolt, 8...
・Joint plate, 9...Tightening member, 10...
... Slanted long hole, 11 ... Hole, 12 ...
・Press part, L, H... Length.

Claims (1)

[Scope of Claim for Utility Model Registration] A band-shaped joint material is provided approximately in the width direction of the joint end surfaces of the paired cement products, and anchors with locking parts are connected to the side walls near the joint end surfaces of the products. a fastening member that is buried so as to be inclined from the inside of the side wall toward the front surface, a joint plate is connected between the locking portions with a bolt, and has an oblique long hole extending substantially perpendicular to the joint plate; A joint joint device for a secondary cement product, characterized in that the bolt is passed through one of the bolts and arranged perpendicularly to the joint plate, and the joint is tightened and connected by sliding this tightening member.