JPH0656145U - Cut beam jack - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a cutting beam jack that allows a cutting beam jack installed in a deep trench to be easily operated from the ground. [Structure] Rotation for turning the threaded portion on a beam girder jack 5 configured such that the rod 7 expands and contracts by the rotation of the threaded portion consisting of the screw hole 6a of the jack outer cylinder 6 and the male threaded portion 7a of the rod 7. The hook 12a, 12 of the rotary jig 10 for providing the portion 8 and for rotating the screw portion on the outer peripheral portion of the rotary portion 8 is provided.
Engaging portions 8a capable of engaging with b are continuously provided at predetermined intervals in the circumferential direction of the rotating portion 8.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a beam girder jack configured such that a rod expands and contracts by rotation of a screw portion.

[0002]

[Problems to be solved by conventional techniques and devices]

 Buried pipes such as drainage pipes and gas pipes may be buried below the surface of the ground such as roads. In this type of work, excavation trenches of the required depth are dug in the ground surface, the left and right side walls of the trench are protected by damming panels to prevent them from collapsing, and after embedding the buried pipe, the damming panels are removed and backfilled. There is.

In this case, a cut beam jack is installed between the left and right ridge stop panels to support the ridge stop panel, but it is necessary to temporarily remove the cut beam jack to fill the buried pipe. is there.

Conventionally, in order to temporarily remove the beam girder jack, the jack was loosened by entering the excavation groove and then removed. For this reason, the temporary removal of the cutting beam jack was not only troublesome, but also extremely dangerous.

The present invention has been made in order to solve the above problems, and an object thereof is to provide a cutting beam jack capable of easily removing the cutting beam jack temporarily from the ground.

[0006]

[Means for Solving the Problems]

 The beam girder jack according to the present invention comprises a beam girder jack configured such that the rod expands and contracts by the rotation of the threaded portion, and a rotary portion for rotating the threaded portion is provided, and the rotary portion is provided on the outer peripheral portion thereof. It is configured by continuously providing engaging portions for engaging a rotating jig for rotating the screw portion at predetermined intervals in the circumferential direction of the rotating portion.

[0007]

【Example】

 Example 1. 1 to 7 show a usage state of an embodiment of a beam girder jack according to the present invention. In the drawings, reference numeral 1 is a buried pipe such as a water supply / drainage pipe buried below the ground surface, and 2 is this buried pipe 1. Excavation trenches that have been dug below the ground surface for burying roads, 3 is a cliff stop panel built to protect the side walls of this digging trench 2 from collapsing, and 4 is the left and right cliff stop panels. The flaps made of channel steel, etc., which are attached inside the 3 at a predetermined interval, and the reference numeral 5 is between the left and right flaps 4 and 4 for supporting the left and right cleat panels 3,3. A beam girder jack horizontally laid on the ground.

The cross beam jack 5 includes a jack outer cylinder 6 having screw holes 6a, 6a formed at predetermined depths along the material axis on both left and right sides, and left and right screw holes 6a, 6a of the jack outer cylinder 6. The left and right rods 7 and 7 each having a male threaded portion 7a screwed together and a rotating portion 8 attached to an outer peripheral portion of the jack outer cylinder 6 for rotating the jack outer cylinder 6 are configured.

The tips of the left and right rods 7, 7 are detachably connected to the left and right flaps 4, 4 by connecting pins 9 so that they can be easily separated.

Further, the connecting pin 9 is vertically connected to the connecting portion between the flap 4 and the rod 7 so that the connecting beam 9 can be attached to the mountain stopper panel 3 by rotating the beam jack 5 horizontally using the connecting pin 9 as a fulcrum. Is plugged into. Further, a ring 9a is provided on the upper end of the connecting pin 9 (see FIG. 5), and a hook (not shown) provided on the tip of a drawing jig (not shown) is hooked on the ring 9a. The connecting pin 9 can be easily pulled out from the ground.

The rotating portion 8 is formed in a ring shape so that it can be fitted into the outer peripheral portion of the jack outer cylinder 6, and is integrally attached by welding to the outer peripheral portion of the jack outer cylinder 6. Further, on the outer peripheral surface of the rotating portion 8, a plurality of groove-shaped engaging portions 8a are formed at a predetermined pitch in the circumferential direction at right angles to the circumferential direction. The groove-shaped engaging portion 8a may be formed by cutting the rotating portion 8.

[0012] The tips of the left and right rods 7,7 are connected to the flaps 4,4 by the connecting pins 9, and the left and right rods 7,7 are prevented from rotating, so that the engaging portion of the rotating portion 8 is prevented. When the jack outer cylinder 6 is turned to the side where the left and right rods 7,7 protrude by a rotating jig that has a hook that can be engaged with 8a, the left and right flaps 4,4 are strongly pressed by the left and right rods 7,7. Therefore, the left and right mountain stop panels 3, 3 are supported.

A rotating jig as shown in FIG. 3 is used. The rotating jig 10 is composed of an arm portion 11 formed to have a length reaching the beam girder jack from the ground, and a grip portion 12 projecting from the tip of the arm portion 11. The grip portion 12 is an arm portion. It is composed of a hook 12a integrally projecting from the tip of the arm 11 and a hook 12b rotatably projecting from the tip of the arm 11.

The hook 12a and the hook 12b are engaged with the engaging portions 8a, 8a of the rotating portion 8 and the arm portion 11 is rotated in the circumferential direction of the rotating portion 8, so that the jack outer cylinder 6 can be moved from the ground. It can be easily turned.

FIG. 4 shows another rotating jig, in which the tip portion of the arm portion 11 is bent so that the grip portion 12 is eccentric from the material axis of the arm portion 11.

By using this rotating jig, even when the cutting beam 13 installed on the upper side of the cutting beam jack 6 is an obstacle, the cutting beam 13 can be avoided and the jack outer cylinder 6 can be easily rotated. You can

In such a configuration, in order to install the buried pipe 1 below the beam girder jack 5 already installed between the left and right flap members 4, 4, the tip end portions of the left and right rods 7 are One of the left and right connecting pins 9 connecting the rod 4 and the rod 4 is pulled out to separate the rod 7 from the rod 4. Next, the cut beam jack 5 is rotated around the other connecting pin 9 as a fulcrum and attached to one earth retaining panel 3.

Next, the buried pipe 1 is hung and suspended from the bottom of the excavation groove 2 by a crane or the like. Next, the cutting beam jack 5 is bridged again between the flapping members 4 and 4, and the rod 7 temporarily separated from the flapping member 4 is reconnected by the connecting pin 9.

Example 2. FIG. 8 shows another embodiment of the beam girder jack according to the present invention. In the figure, the same parts as those of the first embodiment and corresponding parts are designated by the same reference numerals, and the description thereof will be omitted. Reference numeral 14 is a rotating portion attached to the outer peripheral portion of the jack outer cylinder 6 for rotating the jack outer cylinder 6, and in FIG. 9, reference numeral 15 is a rotating jig for rotating the jack outer cylinder 6.

The rotating portion 14 is configured to rotate the jack outer cylinder 6 by a ratchet type rotating mechanism. Further, an engaging hole 14a for inserting the hooks 15a, 15a of the rotating jig 15 is provided on the outer peripheral surface of the rotating portion 14 so as to project.

Then, the hooks 15 a, 15 a of the rotating jig 15 are inserted into the engaging holes 14 a of the rotating portion 14, and the rotating portion 15 can be rotated by the rotating jig 15.

[0022]

[Effect of device]

 As described above, by using the beam girder jack according to the present invention, it is possible to easily operate the beam girder jack installed in the deep place of the excavation groove even from the ground by using the rotating jig having the long handle. The buried pipe can be installed very safely at the bottom of the trench. Also, since the engaging parts for engaging the rotating jig are continuously formed at predetermined intervals in the circumferential direction of the rotating part, the cutting beam jack is installed in the excavation groove in any state. Even if it is, the rotating jig can be easily engaged with the engaging portion of the rotating portion.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of an excavation groove showing an installed state of a cutting beam jack according to the present invention.

FIG. 2 is a plan view of a beam girder jack according to the present invention.

FIG. 3 is a rotating jig for rotating the jack outer cylinder of the beam girder jack according to the present invention.

FIG. 4 is a rotating jig for rotating the jack outer cylinder of the beam girder jack according to the present invention.

FIG. 5 is a front view of a connecting pin.

FIG. 6 is a partial side view of the jack outer cylinder of the beam girder jack according to the present invention.

FIG. 7 is a front view of the outer cylinder shown in FIG.

FIG. 8 is a plan view of another embodiment of the beam girder jack according to the present invention.

9 is a rotating jig for rotating the jack outer cylinder of the beam girder jack shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Buried pipe, 2 ... Excavation groove, 3 ... Mountain stop panel, 4 ... Flapping material, 5 ... Beam jack, 6 ... Jack outer cylinder, 6a ... Left and right screw holes, 7 ... Rod, 8 ... Rotating part, 9 … Connecting pins, 10…
Rotating jig, 11 ... Arm portion, 12 ... Gripping portion, 12a, 12b ... Hook, 13 ... Beam, 14 ... Rotating portion, 15 ... Rotating jig, 15a ... Hook.

Claims (1)

[Scope of utility model registration request] 1. A cut beam jack configured such that a rod expands and contracts by rotation of a screw portion, is provided with a rotating portion for rotating the screw portion, and the screw portion is rotated around an outer peripheral portion of the rotating portion. A beam girder jack, characterized in that engaging portions capable of engaging with a rotating jig are continuously provided at predetermined intervals in the circumferential direction of the rotating portion.