JPS621317Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a height-adjustable manhole cover receiving frame, and particularly to a rattling prevention structure for the manhole cover receiving frame.

The volume of the volume-adjustable manhole cover receiving frame is adjusted by relatively rotating the inner cylindrical body screwed onto the outer cylindrical body using a special rotating tool. Conventionally, in the manhole cover receiving frame of the type in which the bulkiness is adjusted by such screwing, gaps exist in the radial direction and the vertical direction between the screwing surfaces. and,
When the bulk is considerably increased, the amount of screw engagement between the two cylinders inevitably decreases, which doubles the likelihood of rattling occurring.

The purpose of the present invention is to provide a receiving frame for a manhole cover that can easily and reliably adjust the bulk height in both the radial and vertical directions without causing rattling in such cases. shall be.

Hereinafter, the present invention will be explained based on embodiments shown in the accompanying drawings.

FIG. 1 is a longitudinal cross-sectional view of a receiving frame for a manhole cover with adjustable volume according to the present invention. In the figure, 1 is an existing frame located at a position lower than the road surface A on the road, etc.; 2
3 is an outer cylindrical body that is placed on the inner shelf 1a formed on the inner peripheral surface of the existing frame 1 and has threads 2a on the inner periphery; 2 is an inner cylindrical body that is screwed together and moves up and down by relative rotation with respect to the outer cylindrical body 2; and 4 is an inner cylindrical body 3;
The lid is shown fitted and supported by the inner circumferential surface of the lid.

The feature of the present invention lies in the structure in which the outer cylinder body 2 and the inner cylinder body 3 are firmly connected in the above basic configuration. As shown in FIG. 2, the ends of a pair of semicircular strips 5 are connected, for example, with bolts 6 and nuts 6', or a hinge (not shown) forms a double-sided tightening band 7. . Then, as shown in FIG. 1, the upper outer peripheral surface of the outer cylindrical body 2 is wound around the upper outer peripheral surface of the outer cylindrical body 2 in a tightened state using the tightening band 7, and then the tightening band 7 and the inner cylindrical body 3
It is constructed by filling an annular space formed between the outer peripheral surfaces of the adhesive resin putty 8 with adhesive resin putty 8. With this configuration, when the adhesive resin putty 8 hardens, the outer cylinder 2 and the inner cylinder 3 are moved by the tightening force of the tightening band 7 and the space-filling support force due to the band winding of the adhesive resin putty 8. The outer cylinder body 2 and the inner cylinder body 3 are strongly integrated, and regardless of the amount of screwing between the outer cylinder body 2 and the inner cylinder body 3, both the cylinder bodies 2 and 3
It is possible to completely eliminate the wobble between the two.

In the illustrated embodiment, means are further provided such as wedge driving and adhesive resin putty to establish fixed connections between the existing frame 1 and the outer cylinder 2 and between the outer cylinder 2 and the inner cylinder 3. .

3 and 4 show details of the outer cylinder 2 and the inner cylinder 3, respectively. In Figure 3,
Reference numeral 9 denotes an annular edge provided at the upper part of the outer cylindrical body 2, and a first wedge insertion opening 10 is bored in the edge 9 at a required circumferential pitch. is provided with a longitudinal groove 11 that coincides with the first wedge insertion opening 10 (see FIG. 1). The first wedge insertion port 1
0 and the longitudinal groove 11 form a first wedge insertion hole 12. By driving the first wedge 13 into the first wedge insertion hole 12, the existing frame 1 and the outer cylindrical body 2 are integrated. Reference numeral 14 denotes a vertically long groove formed in the thread 2a of the inner circumferential surface of the outer cylinder 2 at a required circumferential pitch. As shown in FIG. 4, this longitudinal groove 14 is a longitudinal groove 15 provided at a required circumferential pitch on the thread 3a of the outer circumferential surface of the inner cylinder 3.
, and form the second wedge insertion hole 16 (see FIG. 5). By driving the second wedge 17 into the second wedge insertion hole 16, the outer cylindrical body 2 and the inner cylindrical body 3 are more reliably integrated.

Next, with reference to FIG. 1, a volume adjustment operation using a receiving frame for a manhole cover having the above structure will be explained.

First, the outer cylindrical body 2 is placed on the shelf portion 1a of the existing frame 1. At this time, in advance, the inner circumferential surface of the existing frame 1 and the shelf portion 1a are
An adhesive resin putty is applied to the entire surface of the frame, and by pressing the outer cylinder 2 against the shelf 1a while maintaining a constant distance between it and the existing frame 1, the adhesive resin putty is applied to the first The wedge insertion hole 12 is filled. 1st
When the first wedge 13 is driven and inserted into the first wedge insertion hole 12 through the wedge insertion opening 10, the adhesive resin putty fills the surrounding area and the outer cylinder 2 is securely fixed to the existing frame 1. It becomes like this.

Next, by rotating the inner cylinder 3 with respect to the outer cylinder 2, the inner cylinder 3 moves up and down, and the volume is adjusted. This rotation is achieved by using a rotation tool (not shown) in the rotation groove 18 provided on the upper edge of the inner cylindrical body 3 shown in FIG.
This is done by inserting.

Thereafter, by driving the second wedge 17 into the second wedge insertion hole 16, the outer cylindrical body 2 and the inner cylindrical body 3 are integrated. At this time, if the second wedge insertion hole 16 is also filled with adhesive resin putty as necessary, when the second wedge 17 is driven and inserted, the swinging of the second wedge 17 is suppressed. Both frames 2 and 3 can be fixed even more reliably.

Thereafter, the tightening band 7 is wound tightly around the outer cylinder body 2 in the manner described above, and then the tightening band 7
Adhesive resin putty 8 is placed in the annular space between the inner cylindrical body 3 and the
Fill it. Thereby, it becomes possible to securely fix the outer cylinder 2 and the inner cylinder 3.

In addition, when the amount of threading between the two cylindrical bodies 2 and 3 is relatively large, adhesive resin putty 8 is also filled in the second wedge insertion hole 16 before the tightening band 7 is wound. 17, the integral connection between the outer cylindrical body 2 and the inner cylindrical body 3 is further improved and completed.

As mentioned above, in the present invention, due to the above-mentioned structure, even when the amount of screw engagement of the receiving frame of the volume-adjustable manhole cover placed and fixed on the existing frame is reduced, looseness may occur. Moreover, it is possible to easily and reliably adjust the bulkiness.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of the volume-adjustable manhole cover and receiving frame according to the present invention, Fig. 2 is a plan view of the tightening band, Fig. 3 is a plan view of the outer cylindrical body, and Fig. 4 is a plan view of the inner cylindrical body. The plan view and FIG. 5 are cross-sectional views of the second wedge insertion hole. 1... Existing frame, 1a... Shelf, 2... Outer cylinder, 2a...
Thread thread, 3... Inner cylinder body, 3a... Thread thread, 4... Lid, 5
...Semicircular band plate, 6...Bolt, 6'...Nut, 7...
Tightening band, 8... Adhesive resin putty, 9... Annular edge, 10... First wedge insertion opening, 11... Longitudinal groove, 12...
First wedge insertion hole, 13...first wedge, 14...vertical groove, 1
5... Vertical groove, 16... Second wedge insertion hole, 17... Second
Wedge, 18...Rotation groove.

Claims (1)

[Scope of utility model registration request] It consists of an outer cylindrical body 2 having a thread 2a on its inner circumferential surface, and an inner cylindrical body 3 that is vertically movable and has a thread 3a on its outer periphery that engages with the thread 2a of the outer cylindrical body 2. In the structure of the receiving frame of the manhole cover whose volume can be adjusted by placing and fixing the cylinder body 2 on the inner shelf part 1a of the existing frame 1 installed on the road etc., the upper outer peripheral surface of the outer cylinder body 2 is tightened. A volume-adjustable manhole cover receiving frame characterized by being provided with a tightening band 7 which is wound and fills an annular space formed between the inner cylinder body 3 and an adhesive resin putty 8.