JPH08209701A - Stretch beam supporting apparatus - Google Patents

Abstract

PURPOSE: To provide a stretch beam supporting apparatus that can support a transverse stretch beam for a sheet pile or a sheathing board by pressing the stretch beam with simple and quick operations. CONSTITUTION: A stretch adjustment rod 2 and a stretch movement rod 3 are inserted respectively from one side and the other side of a stretch beam support pipe 1 so that they can slide inside the pipe. A plurality of adjustment holes 2' are drilled to the stretch adjustment rod 2 at intervals in a straight line. With one adjustment hole 2' selected, an insert pin 4 is inserted through an insert hole provided at the stretch beam support pipe 1 into the selected adjustment hole 2', and thereby the length of projection is adjusted and determined for the stretch adjustment rod 2. An eccentric cam mechanism (a) is provided at the stretch beam support pipe 1 for making the stretch movement rod 3 project or retreat, and the length of projection is adjusted and determined for the stretch movement rod 3 by turning the eccentric cam mechanism (a). A return prevention mechanism (b) is provided at the eccentric cam mechanism (a).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tension beam support tool for supporting sheet piles, weir boards, etc. that support earth pressure of surrounding ground during mountain dam construction.

[0002]

2. Description of the Related Art Conventionally, mountain cutting work has been carried out in order to support the earth pressure of the surrounding ground and prevent it from collapsing during root cutting work. Etc. are supported by a horizontal cross beam, and this horizontal cross beam is supported by a plurality of turnbuckle type support tools, but this conventional support tool takes time to rotate the screw, Since earth pressure is applied when removing the support tool, it takes a lot of force to turn the nut, and it is difficult to turn the screw due to dirt and sand adhering to the left and right screw parts or rust. was there.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned drawbacks and provides a tension beam support device which can be easily removed after supporting a transverse tension beam with one touch.

[0004]

The gist of the present invention will be described with reference to the accompanying drawings.

The tension adjustment rods 2 and the overhanging movement rods 3 are slidably inserted into the right and left sides of the tension beam support pipe 1, and a plurality of adjustment holes 2'are formed in the tension adjustment rod 2 at intervals to form a series of holes. Then, select this adjustment hole 2'and use the tension beam support pipe 1
Insert the insertion pin 4 into the adjustment hole 2'from the insertion hole 1'drilled in the hole to adjust and fix the protruding length of the tension adjustment rod 2, and operate the overhanging movement rod 3 in the tension beam support pipe 1 to project and retract. An eccentric cam mechanism a is provided, the eccentric cam mechanism a is rotated to adjust and fix the protruding length of the overhanging movement rod 3, and the eccentric cam mechanism a is provided with a return movement preventing mechanism b. This is related to a beam support tool for mountain dam construction.

[0006]

Operation: Select the adjustment hole 2'drilled in the tension adjustment rod 2, and insert the insertion pin 4 into the adjustment hole 2'from the insertion hole 1'drilled in the tension beam support tube 1 to project the length of the tension adjustment rod 2. After adjusting and fixing the height, the tip of the tension adjustment rod 2 is brought into contact with the cross beam on one side of the mountain stopper work, and then the overhanging movement rod 3
The tip of the tension beam to the cross beam on the other side, the eccentric mechanism a is rotated to project from the overhanging movement rod 3, and the tension beam support tool is tensioned between the two, and the eccentric mechanism b is used for eccentricity. The cam mechanism a is prevented from returning and is fixed in a tensioned state.

When the construction is completed, the return movement preventing mechanism a is released, the eccentric cam mechanism a is rotated in the reverse direction, and the extension moving rod 3 is returned to loosen the tension of the tension beam support tool.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The accompanying drawings illustrate one preferred embodiment of the present invention.

The tension adjusting rods 2 and the extension moving rods 3 are slidably inserted into the right and left sides of the tension beam support pipe 1, and the adjustment holes 2'are bored in series in the tension adjusting rod 2 with a gap therebetween. The adjustment hole 2'is selected and the insertion pin 4 is inserted into the adjustment hole 2'through the insertion hole 1'perforated at the left end of the tension beam support tube 1 to adjust and fix the protruding length of the tension adjustment hole 2.
An eccentric cam mechanism a for projecting and retracting the overhanging moving rod 3 is provided on the tension beam support pipe 1, and the eccentric cam mechanism a is rotated to stretch and fix the projecting length of the overhanging moving rod 3. The cam mechanism a is provided with a return movement prevention mechanism b.

The illustrated eccentric cam mechanism a will be described.

The tension beam support pipe 1 is provided with a pivot shaft 6 having a protruding short shaft projecting above the flange portion, and the projecting end shaft of the lower end of the pivot shaft 6 is bonded to the tension beam support pipe 1 by welding. The eccentric cam plate 7 is fitted to the eccentric shaft hole of the outer shape disk-shaped eccentric cam plate 7, and the eccentric cam plate 7 is fixed to the pivot shaft 6 by the washer 8 and the binding bolt 9 so that the eccentric cam plate 7 cannot be vertically moved. An eccentric cam plate 7 is pivotally locked so that it can be eccentrically rotated, and the eccentric cam plate 7 is engaged with and abuts on the half-circumferential end surface of the eccentric cam plate 7 on the tension beam support pipe 1 near the overhanging rod 3. The concave plate 10 is provided to engage the tension beam support pipe 1
A slot having a predetermined length from below 10 toward the overhanging rod 3.
11 is bored and a shaft mounting hole is formed in the engaging concave plate 10. A pin bolt 12 is inserted and shaft mounted in the shaft mounting hole so that the tip end thereof is in the long groove hole 11
The eccentric cam plate 10 is screwed and fixed to the overhanging moving rod 3 via the upper end of the eccentric cam plate 10, and the eccentric cam plate 7 is rotated around the pivot shaft 6. Is fixed upright and its upper end engages with the tip of the rotating tool 14 Pin 1
3'is fixed to the left and right side so that it penetrates. A fastening pin 14 is provided in the tension beam support pipe 1, and a tension spring 15 is stretched between the base ends of the extension moving rod 3 to engage the extension pin with the extension rod 3. When the concave plate 13 is constantly biased to the eccentric cam plate 7 in a pressed state and the rotary body 13 is rotated by the rotary tool 16 that engages with the pin pin 13 ', the eccentric cam plate 7 causes the pivot shaft 6 to move. As the shaft rotates eccentrically, the engaging concave plate 10 in contact with the outer peripheral end surface of the eccentric cam plate 7 moves, and the pin bolt provided on the engaging concave plate 10 moves.
Since the 12 moves with the long slot 11 as a guide, the beam moving rod 3
The tip of the bulge moves with the tension beam support tube 1 as a guide.

Reference numeral 17 in the drawing denotes a long groove hole 11 which covers the long groove hole 11.
It is a covered cover that further prevents the entry of earth and sand into the tension beam support pipe 1.

The return movement preventing mechanism b will be described.

A slide cylinder 19 is slidably fitted on a tension beam support pipe 1 located closer to the tension rod 2 than the eccentric cam plate 7, and a keyway and a key groove are provided in the tension beam support pipe 1 and the slide cylinder 19, respectively. , The gradient key gap 24 engaging with the keyway and the keyway is fixed to the keyway, and when the slide tube 19 is slid onto the tension beam support tube 1 in the keyway part of the slide tube 19, the slide tube is at a desired position. An L-shaped handle-like screw stopper fitting 20 capable of fixing 19 to the tension beam support pipe 1 is screwed.

A return movement preventing rod 21 that abuts on the cam portion of the eccentric cam plate 7 is projected from the slide tube 19. Reference numerals 22 and 23 are abutting plates which come into contact with the transverse beam and engage and lock the strut tension rod 2 and the overhanging movement rod 3.

Since the present embodiment is constructed as described above, the adjustment hole 2'of the tension adjustment rod 2 is selected, and the insertion pin 4 is inserted into the adjustment hole 2'through the insertion hole 1'and the tension adjustment rod 2 is inserted. Adjusting and fixing the protruding length, the backing plate of this tensioning rod 2.
When the rotating tool 13 is rotated by the rotating tool 16 after the 22 is brought into contact with the cross beam on one side of the mountain stopper work, the eccentric cam plate a causes the eccentric cam plate 7 to use the pivot shaft 6 as the eccentric rotation center. As the engaging concave plate 10 moves as it rotates, the pin bolt 12 moves into the slot 11
Using the tension bolt support tube 1 as a guide, the overhanging movement rod 3 moves forward in a protruding state by the movement of the pin bolt 12, and the backing plate 23 of the extension movement rod 3 crosses over to the other side. The tension beam is pressed to laterally support the tension beam with the tension beam support tool, and the slide cylinder 19 of the return movement preventing mechanism is moved so that the tip of the return movement preventing rod 21 contacts the eccentric cam plate 7. Rotate the key-like handle part of the screw stopper 20 by contacting it, and bring the tip of the screw stopper 20 into contact with the gradient key to slide the cylinder.
19 is fixed to the tension beam support pipe 1 to prevent the eccentric cam plate 7 from returning.

[0017]

Since the present embodiment is constructed as described above,
After adjusting the protruding length of the tension adjustment rod with the tension hole and the insertion pin, the eccentric cam mechanism projects the overhanging movement rod with one touch, and the transverse beam is supported by the tension beam support tool in the tensioned state. It is possible to prevent the eccentric cam mechanism from returning by the anti-return mechanism and keep it in this state.After the completion of construction, the anti-return mechanism is released and the eccentric cam mechanism makes it easy to support the tension beam support device. Since it can be loosened, it is a practical and excellent tension beam support tool that improves workability without the drawback that the screw part rusts or sticks to the screw part due to the earth and sand unlike the conventional turnbuckle type support tool.

[Brief description of drawings]

FIG. 1 is a perspective view of the present embodiment.

FIG. 2 is a side view in which a part of the present embodiment is cut away.

FIG. 3 is a plan view of an essential part of this embodiment before the operation.

FIG. 4 is a plan view showing a usage state of a main part of the embodiment.

FIG. 5 is a partially cutaway side view showing a usage state of the embodiment.

[Explanation of symbols]

 a eccentric cam mechanism b return movement prevention mechanism 1 tension beam support pipe 1'insertion hole 2 bulge adjustment rod 2'adjustment hole 3 overhanging movement rod 4 insertion pin

Claims (1)

[Claims] 1. A tension adjusting rod and an extension moving rod are slidably inserted to the left and right of a tension beam support pipe, and a plurality of adjustment holes are formed in the tension adjusting rod in a series to form a gap.
Select this adjustment hole and insert an insertion pin into the adjustment hole from the insertion hole drilled in the tension beam support tube to adjust and fix the protruding length of the tension adjustment rod, and project the overhanging movement rod to the tension beam support tube. An eccentric cam mechanism for retracting operation is provided, the eccentric cam mechanism is rotated to adjust and fix the protruding length of the overhanging moving rod, and the eccentric cam mechanism is provided with a return preventing mechanism. Beam support tool for construction work.