JP2964406B1 - Driving protection device for protective fence post - Google Patents

Abstract

[PROBLEMS] To prevent damage to the outer and top surfaces of a protective fence post during driving, and to correct the misalignment and orientation of the post, thereby enabling accurate driving and excellent work efficiency. SOLUTION: A protection cylinder 1 composed of a metal cylinder 2 having an inner diameter capable of being inserted into and removed from a protection fence support 51 has an upper end formed with a tapping portion 3, and a protection member 4 made of vinyl chloride is provided on an inner peripheral surface 2A. It is provided. The protection cylinder 1 is axially spaced apart from the pin insertion holes 5, 5,
6, 6 are bored in the radial direction, and a high-strength nut 8 is fitted to the rim. A substantially U-shaped metal correcting rod locking portion, a handle, and a pair of pull-out hooks 11, 11 are fixed to the outer surface of the protective cylinder 1. Pin insertion holes 5, 5, 6, 6
, The connecting pins 12 and 13 are inserted through the engaging holes 51B and 51C of the protective fence support 51.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a guard cable,
The present invention relates to a driving protection device for a protective fence post which is preferably used when a support fence such as a guardrail or a sidewalk guard pipe is driven into the ground to be erected.

[0002]

2. Description of the Related Art When installing protective fences, a large number of protective fence posts A are erected on the ground B with a predetermined space therebetween. 1
0 is known. FIG. 6 and FIG.
An insertion hole C is formed by driving and pulling out a slightly thicker pre-cast iron pole (commonly known as a rocket) 51, and a protection fence support A is inserted into the insertion hole C. FIG. 8 and FIG. An auger excavation method in which the insertion hole C is first dug by the excavator 52, the protection fence post A is inserted, and the insertion hole C is backfilled with the backfill soil 53. FIG. 10 shows a cushioning material 54 such as rubber, sponge, etc. Is mounted on the protective fence post A, and the cap 55 is pressed by a construction machine such as a backhoe or a hydraulic shovel, thereby inserting the protective fence post A into the ground B so as to be erected.

[0003]

However, among the above-mentioned prior arts, in the iron pillar pre-casting method, since the surrounding earth and sand collapses when the driven iron pillar 51 is pulled out, the iron pillar 51 is driven again to secure the depth. And has the disadvantage of poor workability. In addition, in the auger excavation method, the insertion hole C
Disadvantage that it is difficult to excavate the depth of the hole accurately,
Since the diameter of the auger 52 is large with respect to the protection fence post A, it is necessary to bury the soil around the protection fence support A and to compact the soil, and because the backfill soil 53 and the protection fence support A sink over time. Has the disadvantage that repair work is indispensable.

In the cap-crown pressing method shown in FIG. 10, the top surface of the protective fence post A is deformed when a small impact is applied to a hard layer or an obstacle such as a stone in the ground.
There is a disadvantage that the guard fence post A must be replaced, and if the post A is misaligned due to an underground obstacle,
The cap 55, which has no axial length, cannot be pushed by the construction machine on its lateral surface, so that there is no defect correction method. Furthermore, there is a drawback that if there is too much insertion, there is no method for pulling out. And, when the outer surface including the top surface of the protective fence post A is damaged during the erecting work of the protective fence post A, it must be replaced with a new protective fence post A. Is required,
There is a problem that each conventional method does not consider the possibility of pulling out for replacement work.

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and does not damage not only the outer surface of the protective fence post but also the top surface at the time of driving, and corrects misalignment of the post so that accurate driving can be performed. An object of the present invention is to provide a driving protection device for a protective fence post, which does not require any repair work because the post itself or the periphery of the post does not sink, and is excellent in work efficiency.

[0006]

SUMMARY OF THE INVENTION The present invention, which is constituted to solve the above-mentioned problems, is capable of being inserted into and removed from a protective fence post having an engaging hole for engaging a horizontal member such as a guard rope. A protective cylinder made of a metal cylinder having an inner diameter and having an upper end hitting portion, a protective material attached to an inner peripheral surface of the protective tube, a top surface of the protective fence post, and a hitting portion of the protective tube; The pin can be inserted into and removed from the pin insertion hole, which is bored in the axial direction of the protective cylinder in the radial direction to secure a gap between the pin and the fixing hole of the protective fence post. And a connecting pin inserted through the connecting pin.

Further, by fixing an edge protection material to the pin insertion hole in the protection cylinder, the edge of the protection cylinder can be protected from an impact at the time of driving.

In addition, by providing a correction rod locking portion on the outer surface of the protective cylinder, the direction of the protective fence post can be easily corrected.

Further, by providing a pull-out locking portion on the protective cylinder, the installation location can be easily changed even after the driving.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. In the drawing, reference numeral 51 denotes a protective fence post, which is formed of a hollow shaft having a top surface 51A, and is spaced apart in the axial direction to engage with a horizontal member such as a guard rope. And 51C, 51C are drilled therethrough. Reference numeral 1 denotes a protective tube for driving the protective fence post 51. The protective tube 1 has an inner diameter that can be inserted into and removed from the protective fence post 51, and is set to a length that covers the upper side of the protective fence post 51. It is composed of a tubular body 2 made of a steel pipe and a top plate 3 fixed to the upper end of the tubular body 2 by welding means. The top plate 3 can withstand an impact from above by a bucket or the like of a construction machine. A high-strength steel sheet having a thickness of about 19 mm is used. Reference numeral 4 denotes a protective material attached to the inner peripheral surface 2A of the cylindrical body 2 so as not to damage the protective fence post 51.
Is formed, for example, by lining vinyl chloride to a thickness of about 2 mm. Note that, instead of the lining process of vinyl chloride, a rubber sheet may be attached to form a protective material.

Reference numerals 5 and 5 denote upper pin insertion holes which are formed in the protection cylinder 1 in the axial direction and penetrate in the radial direction. Here, in order to secure a sufficient gap D between the top plate 3 and the top surface 51A of the protection fence post 51, and in this embodiment, a gap D of about 100 mm, the upper pin insertion holes 5, 5 are protected. The engaging hole 51B of the fence post 51 is set at a position away from the top plate 3. Reference numerals 6 and 6 denote lower pin insertion holes penetrating in a radial direction from a position near the lower end of the protective cylinder 1, and 7 and 7 are located below the lower pin insertion holes 6 and 6, respectively. 2 shows a lower end side pin insertion hole penetrating through the protection cylinder 1 in the radial direction. The lower pin insertion hole 6 and the lower pin insertion hole 7 can be selectively used because the interval between the engaging holes 51B and 51C differs depending on the type of the guard fence support 51.
Reference numeral 8 denotes a high-strength nut as an edge-protecting material for protecting the edges of the pin insertion holes 5, 6, and 7 from impact at the time of driving. Is welded to the cylindrical body 2 in a state fitted in the respective pin insertion holes 5, 6, 7 to prevent the occurrence of cracks in the welded portion due to impact at the time of driving.

Reference numeral 9 denotes a correcting rod locking portion made of a substantially U-shaped metal bar. The correcting rod locking portion 9 is located in a direction perpendicular to the pin insertion holes 5, 6, and 7 to protect the rod. Both ends are fixed to the outer surface of the tube 1 in the axial direction by welding means. Then, by inserting the distal end side of an operating rod such as a metal rod into the correction rod locking portion 9 and rotating the protective cylinder 1 in the circumferential direction, the protective fence post 51 is set or adjusted in a desired direction. can do.

Reference numeral 10 denotes a handle which is located on the opposite side of the correction rod engaging portion 9 and is fixed to the outer surface of the protective tube 1. The handle 10 can improve the efficiency of transportation and work. .

Reference numerals 11 and 11 denote a pair of pulling hooks made of a substantially U-shaped metal bar. The pulling hooks 11 are diametrically separated from the outer surface of the upper end side of the protective cylinder 1 by welding means. Is fixed by Then, both ends of the wire are engaged with the pair of pull-out hooks 11, 11, and the wire is pulled up by a construction machine such as a shovel, thereby pulling out the protective fence post 51 driven into the ground together with the protective cylinder 1. Can be.

On the other hand, reference numerals 12 and 13 denote connecting pins for connecting the protective cylinder 1 to the protective fence post 51.
Since the strength required to transmit the impact force at the time of driving to the protective fence support 51 is required, the carbon steel rods 2 and 13 have high strength. The connection pins 12 and 13 are connected to the protective cylinder 1 via the chains 14 and 14 to prevent the connection pins 12 and 13 from being lost.

This embodiment has the above-described configuration. Next, the operation thereof will be described with reference to FIGS. First, as shown in FIG.
Is inserted, and the connecting pins 12 and 13 are inserted from the pin insertion holes 5 and 6 of the protective cylinder 1 to the engaging holes 51B and 51C, and the protective cylinder 1 is connected to the protective fence post 51. Next, a wire is hung on a boom 56A or the like of a construction machine 56 such as a hydraulic shovel, and the protective cylinder 1 is lifted and moved to the installation location, and when the construction position is adjusted, is pushed into the ground by about 20 to 30 cm (see FIG. 4). ). When the construction position and posture are determined in this manner, the protective fence post 51 is driven into the ground B by the driving steel plate 56B attached to the tip of the boom 56A. When the protective fence post 51 is driven to a predetermined depth, the distal end 15A of the operation rod 15 such as a gold lever is inserted into the correction rod locking portion 9 as shown in FIG. By correcting the direction of the fence posts 51, the protective fence posts 51 can be quickly erected at an accurate position without misalignment.

If the installation position of the protective fence post 51 is shifted, the wire is connected to the pull-out hook 11 of the protective tube 1.
And the guard fence post 51 can be easily pulled out of the ground B by lifting it with the boom 56A or the like. Further, in the case where the protective fence post 51 is inclined during the driving operation, the side face of the protective cylinder 1 can be corrected to the correct posture by pressing the side surface with the boom 56A or the like. In this case, there is no need to directly press the protection fence support 51 with the boom 56A or the like, so that the protection fence support 51 is not damaged. When the driving operation is completed, the connecting pins 12 and 13 are pulled out from the protection cylinder 1, and the protection cylinder 1 is removed from the protection fence support 51, thereby completing the standing of the protection fence support 51.

In this embodiment, the correction rod engaging portion 9 and the pull-out hook 11 are formed separately, but the pull-out hook 11 may be used also as the correction rod engaging portion 9.

[0019]

The present invention has the following advantages because it is constructed as described in detail above. (1) The protective fence post is driven by a construction machine through a protective cylinder, so that the work efficiency is excellent, and since the protective fence support itself and the ground around the support do not sink over time, no repair work is required. (2) Since the protective cylinder has a length that covers the upper side of the protective fence support, and a gap is secured between the top surface of the protective fence support and the tapping portion of the protective cylinder, the protective fence support is used at the time of driving. Without damaging the top and outer surfaces of the (3) Since the inner peripheral surface of the protective cylinder is covered with the protective material, there is no possibility of damaging the protective fence post during the driving operation. (4) Since the misalignment can be corrected without damaging the protective fence post during the driving operation, it is possible to always drive in a correct posture, and the work can be finished well. (5) By providing the edge protection material in the pin insertion hole, the protection cylinder can prevent the edge from being damaged by repeated impact. (6) Since the protection cylinder is provided with a correction rod locking portion,
By using a long bar, the direction of the guard fence post can be easily corrected. (7) Since the protection cylinder is provided with a pull-out locking portion, the installation position of the protective fence support struck into the ground can be easily changed.

[Brief description of the drawings]

1 to 5 show an embodiment of the present invention, and FIG. 1 is an overall configuration diagram showing a driving protection device for a protective fence post with a part thereof cut away.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a perspective view of a state in which a protective cylinder is covered by a protective fence post.

FIG. 4 is an explanatory view of an operation of erecting a protection fence support via a protection cylinder.

FIG. 5 is an explanatory diagram of an operation of correcting the direction of a standing protective fence post via a protective cylinder.

FIG. 6 and FIG. 7 show a prior art method of hitting an iron pole, and FIG. 6 is an explanatory view showing a state where an iron pole is driven into the ground.

FIG. 7 is an explanatory view of a state in which a protective fence post is erected in the insertion hole.

8 and 9 show a conventional auger excavation method, and FIG. 8 is an explanatory view showing a state where an insertion hole is first excavated by an auger excavator.

FIG. 9 is an explanatory view of a state in which a protective fence post is erected in the insertion hole.

FIG. 10 is an explanatory view showing a conventional cap crown pressing method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Protective cylinder 2 Cylindrical body 3 Tapping part 4 Protective material 5, 6, 7 Pin insertion hole 8 High strength nut (mouth protection material) 9 Correction rod locking part 11 Pull-out hook 12, 13 Connecting pin 51 Protective fence post 51A Top surface 51B, 51C Engagement hole D Void

Claims (4)

(57) [Claims] 1. A protective cylinder comprising a metal cylindrical body having an inner diameter capable of being inserted into and removed from a protective fence post having an engaging hole for engaging a horizontal member such as a guard rope, the upper end of which is a hitting portion; A protective material attached to the inner peripheral surface of the protective cylinder and a radially penetrating part of the protective cylinder in the axial direction of the protective cylinder to secure a gap between the top surface of the protective fence post and a beating portion of the protective cylinder. And a pin insertion hole
A driving protection device for a protection fence post, comprising the pin insertion hole and a connecting pin that is inserted into and removed from the engagement hole of the protection fence post. 2. The driving protection device for a protective fence post according to claim 1, wherein the protection cylinder has an edge protection material fixed to the pin insertion hole. 3. The driving protection device according to claim 1, wherein the protection cylinder is provided with a correction rod locking portion. 4. The driving protection device for a protective fence post according to claim 1, wherein the protection cylinder is provided with a pull-out locking portion.