JPS6149453B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and structure for driving a split cylinder, and its purpose is to properly install a single hollow cylinder in the ground, mainly for use in erecting poles for posting signs, etc. It lies in providing the basics.

As shown in Fig. 1, the present invention curves a rectangular steel plate to form a curved part 2 with a semicircular cross section and bent parts 3, 3 on both sides of the curved part 2, and then bends the center part of the curved part 2 to the front side in the longitudinal direction. Extrude to form a vertical groove 5, and the vertical groove 5
A retaining metal fitting 4 is fixed to the lower back side of the split cylinder body 1, and fitting grooves 6, 6 each having a U-shaped cross section are fixed to the bent portions 3, 3 so as to face each other in the longitudinal direction. , the other divided cylindrical body 1 shown in FIG. 2 is fitted into each other through fixed fitting grooves 6, 6' and combined into a single cylindrical body.

Therefore, the other split cylindrical body 1' shown in FIG. 2 must be installed with the respective fitting grooves 6, 6' facing in opposite directions so that the other split cylindrical body 1' and the one split cylindrical body 1 can be fitted into each other. The shape of one split cylinder 1
are formed in exactly the same shape.

FIG. 3 shows a regulating tube 7 having an outer diameter that can be inserted loosely into the longitudinal grooves 5, 5', with the front part of the collar 8 provided at the intermediate portion being bent downward and holding plate 9.
, and are loosely interpolated. The tip 10 is closed so that the inside of the tip of the regulating tube 7 can be hammered with a rod hammer 11.

This completes the explanation of the structure of the present invention, and next, the construction state and effects of the present invention will be explained.

First, as shown in FIG.
Insert the regulating tube 7, fit its tip 10 inside the stopper fitting 4 fixed to the back side of the vertical groove 5, and press the lower end surface of the collar 8 against the upper end surface of the curved section 2 in the upper direction. A presser plate 9 formed in front of the upper flange 8 that is in contact with the upper flange 8
so that the upper end 12 of the vertical groove 5 is pinched in.

The regulating tube 7 is regulated so that it does not tilt to the left or right by the vertical groove 5, and also to prevent it from tilting forward or backward by the lower retaining metal fitting 4 and the upper retaining plate 9, so that it is prevented from being subjected to impact in the longitudinal direction. On the other hand, the regulating tube 7 has the effect of vertically reinforcing the central part of the divided cylindrical body 1 together with the vertical groove 5.

In this state, the bar hammer 11 is slid and struck inside the regulating tube 7 to drive the regulating tube 7 and one of the divided cylinders 1 that are combined into the ground. Since the tip of one of the regulating tubes 7 is located at a low position, the effect of transmitting the impact applied to one of the divided cylinders 1 through the collar 8 is very good.

In addition, since the bar hammer 11 is loosely inserted into the regulating tube 7 but is integrated with the entire length of the regulating tube 7, the driving direction can be easily determined by operating the bar hammer 11. During driving, the regulating tube 7 and one of the divided cylinders 1 combined with it
Even if there is a slight inclination, the stick hammer 11
By adjusting the striking angle, it is possible to vertically correct the striking direction.

After driving one of the divided cylinders 1 as shown in Fig. 5 through the above operations, pull out the regulating tube 7 and place the one of the divided cylinders 1 slightly exposed above the ground as shown in Fig. 6. Fit the fitting grooves 6', 6' of the other divided cylindrical body 1' into the fitting grooves 6, 6, and drive in the same way as the one split cylindrical body 1 was driven.

After fitting the two divided cylindrical bodies 1 and 1' with their respective fitting grooves 6 and 6' and integrating them to form a single cylindrical body as shown in FIG. After removing the soil using an earth removing tool such as a screw, the root of the pole 13 is placed inside the cylinder as shown in Figure 8, and the gap between the cylinder and the cylinder is filled with cement 14 and hardened to create a foundation and install the pole. This marks the end of 13 construction projects.

When installing a cylinder inside in this way, the biggest reason why it is difficult to drive a single hollow cylinder instead of a divided cylinder is that it may get in through the tip of the cylinder during the driving process. This is because the soil is pressed against the inner wall of the cylinder, gradually increasing the penetration resistance. The best method is to configure

However, if the impact part of the hammer is set above the split cylinder, it is not easy to drive the hammer vertically or in the desired direction, and in the case of a split cylinder made of a thin steel plate, the impact part is set above the split cylinder. It is essential to carry out sufficient reinforcement work.

In order to drive a divided cylinder having an unfavorable shape in terms of balance in a desired direction into a single cylinder, the divided cylinders 1 and 1' are integrated with the regulating tube 7 over substantially the entire length thereof. Combine to make
By setting the striking part of the bar hammer 11 loosely inserted into the regulating tube 7 as far down as possible, the effect of transmitting the impact to the divided cylinders 1, 1' caused by the collar 8 is enhanced, and the impact on the regulating tube 7 and The driving direction of the divided cylindrical bodies 1, 1' combined with this is made easy to determine, and even if there is a slight inclination during driving, it can be easily corrected by operating the rod hammer 11.

In addition, since the regulating tube 7 is assembled in a regulated state within the vertical grooves 5, 5', it has the effect of reinforcing the central part of the divided cylinder bodies 1, 1' together with the longitudinal grooves 5, 5'. This also corresponds to the direction of the striking impact transmitted through the flange 8, so it is advantageous even when driving a split cylinder made of a steel plate with a relatively thin wall thickness.

If a stronger supporting force is required for the divided cylinders 1 and 1' as a base body, as shown in Fig. 9, the resistance plate B should be attached with the bent part A expanded laterally and at an upward angle. This is possible by forming

[Brief explanation of the drawing]

The drawings relate to the present invention, ``Method and Structure of Driving a Divided Cylindrical Body'', and FIGS. 1 and 2 are perspective views showing the structure of the divided cylindrical body, and FIG. 3 is a perspective view of a regulating tube. FIGS. 4 to 8 show the construction state of the present invention, and are side views of the divided cylindrical body in longitudinal section, except for the perspective view of FIG. 6. FIG. 9 is a perspective view showing the scope of application of the present invention. 1, 1'... divided cylinder body, 2, 2'... curved part,
3, 3'...bent portion, 4, 4'...removal stopper, 5, 5'...vertical groove, 6, 6'...fitting groove, 7...
...Regulation tube, 8 ... Flange, 9 ... Holding plate, 10 ...
Tip part, 11... Bar hammer, 12... Upper end part,
13...pole, 14...cement, A...bent part, B...resistance plate.

Claims (1)

[Scope of Claims] 1. A closed end portion 10 is formed in the vertical grooves 5, 5' formed in the longitudinal direction of the center of the divided cylinders 1, 1' and to which the retaining metal fittings 4, 4' are fixed at the lower back side. A regulating tube 7 formed with a flange 8 having a presser plate 9 at the intermediate portion is inserted, and the regulating tube 7 is aligned in the longitudinal direction with respect to the divided cylinders 1 and 1' over almost the entire length thereof. The rod hammer 11 in the upper regular tube 7 is operated to strike the tip 10 of the regular tube 7, and the striking impact is applied to the flange 8 which is in contact with the upper end surface of the divided cylinders 1, 1'. A method for driving a divided cylinder body, characterized in that the driving method is transmitted to the divided cylinder bodies 1, 1' through. 2 Upper curved part 2 made of a rectangular steel plate with a curved part 2 having a semicircular cross section and bent parts 3, 3 formed on both sides of the curved part 2 by pressure molding.
A longitudinal groove 5 is formed in the center of the longitudinal groove 5.
A single cylinder body is formed by combining one divided cylinder body 1 with a retaining metal fitting 4 fixed to the lower part of the back side and the other divided cylinder body 1' having the same shape as the one divided cylinder body 1. In order to construct the structure, fitting grooves 6, 6 having a U-shaped cross section are fixed in the bent portions 3, 3 of one split cylinder 1 in the longitudinal direction so that the respective fitting grooves 6, 6 face each other, and bent part 3' of body 1',
The structure of the divided cylinder body is characterized in that another fitting groove 6', 6' is fixed to 3' so as to fit into the fitting grooves 6, 6 of one divided cylinder body 1.