JPH0679896U - Bowling rod - Google Patents

Abstract

(57) [Summary] [Object] To provide a boring rod capable of easily and quickly performing centering when connecting boring rods for excavation in which rods are screwed at the upper and lower ends to make them long. In a boring rod for excavation 1 to be driven into the ground by an excavating device while screwing the upper and lower ends of rods of a required length into one another, a conical guide part 6 is provided at the tip of the male screw part 4 of the rod. It was

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a boring rod used for ground excavation for civil engineering construction work such as underground boring and underground anchor.

[0002]

[Prior art]

 Conventionally, a boring rod of the required length was driven into the ground by an excavator, and the lower end of the next boring rod was driven into the upper end of the boring rod and the threaded portion of the boring rod was screwed together to connect the boring rod. Have been drilled deep. The boring rod used for this purpose has a male threaded portion at the lower end of the rod and a female threaded portion at the upper end of the rod so that they can be screwed together and connected. The drilling bit is attached to the bottom of the bowling rod at the bottom of the rod.

In addition, as the boring rod, there are a single-tube boring rod that sequentially connects individual rods, and a double-tube boring rod that can connect a double rod of an inner rod and an outer rod. The lower ends of these boring rods were flat-headed as shown in FIG. 8, and male screw parts were engraved on this.

[0004]

[Problems to be solved by the device]

 With conventional boring rods, it is difficult to align the boring rods in the process of screwing and connecting the boring rods.Therefore, the boring rod on the side to be mounted must be hung by a crane and manually moved to perform the alignment. Instead, it took time and effort.

The problem to be solved by the present invention is to solve these conventional problems and to provide a boring rod which facilitates centering when connecting rods.

[0006]

Means for Solving the Problems The gist of the present invention which has solved the above problems is as follows: 1) For excavation that is driven into the ground by an excavating device while screwing the upper and lower ends of a rod of a required length together to make them longer A boring rod for excavation, characterized in that a conical guide portion is provided at the male screw side end of the rod. 2) A boring rod according to 1), wherein the conical guide portion has a plurality of openings. is there.

[0007]

[Action]

 In the present invention, when the tip of the boring rod on the male thread side is provided with a conical guide part, when the boring rod is connected to the female thread side of the boring rod, the conical guide part automatically makes contact when the rod ends contact each other. When the core is taken out and the rod to be mounted is pushed in as it is, the male screw part is fitted into the other female screw part, and it can be screwed by rotating. As a result, the rod connecting work can be greatly and quickly performed.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. The boring rod of the embodiment shown in FIGS. 1 to 3 is an example in which an opening is not provided in the guide portion at the lower end of the rod, and FIGS. 4 to 7 are other embodiments in which the guide portion is provided with an opening.

FIG. 1 is a front view of this embodiment, FIG. 2 is an enlarged explanatory view showing an essential part of the embodiment, FIG. 3 is a side view of the embodiment, and FIG. 4 is an enlarged explanatory view showing an essential part of another embodiment. FIG. 5, FIG. 5 is a side view of another embodiment in which an opening is provided in the guide portion, FIG. 6 is a plan view showing a state of placing work using an excavator, and FIG. 7 is a state of the same placing work. It is a front view.

In the figure, 1 and 11 are boring rods, 2 and 12 are hollow inner rods of the boring rods 1 and 11, 3 and 13 are hollow outer rods of the boring rods 1 and 11, and 4 and 14 are outer. Male threads on the lower part of the rods 3,13, 5,15 female threads on the upper part of the outer rods 3,13, 6,16 conical guide parts provided at the tips of the male thread parts 4,14 of the outer rods 3,13. , 7 and 17 are male screw parts at the upper end of the inner rods 2 and 12, 8 and 18 are female screw parts at the lower end of the inner rods 2 and 12, 9 is a spanner hook provided on the upper part of the inner rods 2 and 12, and 10 is a guide. It is an opening provided in the portion 16. 20 is an excavator, 21 is a guide, 22 is a rotary striking device that moves along the guide, 23 is an extension rod having the same structure as the lower parts of the inner rods 2 and 12, and 24 is the same as the lower part of the outer rod 13. A coupling 25 having a structure has a rotary striking shaft 25, and an outer rod gripping portion 26 grips the upper portion of the outer rod 3.

In this embodiment, as shown in FIGS. 6 and 7, the boring rods 1 and 11 are placed on a guide 21 of the excavation device 20, and the guide is horizontally or tilted at a required angle to mount the rotary striking device 22. It is activated and driven into the ground. When the boring rods 1, 11 are driven into the ground, the next boring rods 1, 11 are placed on the guide 21, and the boring rods 1, 11 are attached to the male screw parts 7, 17 at the upper ends of the inner rods 2, 12 of the boring rods 1, 11 next. The inner threaded portions 2, 18 of the lower ends of the inner rods 2, 12 of the boring rods 1, 11 are screwed together to be integrated. Also, the female screw portions 5, 15 on the upper portions of the outer rods 3, 13 of the boring rods 1, 11 are screwed into the male screw portions 4, 14 on the lower portion of the outer rods 3, 13 of the boring rods 1, 11 to be mounted next. .

In this screwing, since there are conical guide parts 6, 16 at the lower ends of the male screw parts 4, 14 below the outer rods 3, 13, the guide parts 6, 16 are pressed against the female screw parts 5, 15. Then, the guides 6 and 16 are automatically centered by the conical inclinations of the guides, and the male and female threads 4 and 14 are accurately and quickly fitted into the female and screw threads 5 and 15 to rotate the boring rods 1 and 11 to be mounted. When rotated by a percussion device, the outer rods 3, 13 are connected to each other. Further, if the guide portion 16 is provided with the opening 10 thereafter, the protrusions at the upper ends of the inner rods 2 and 12 and the swath hook portion 9 can be passed to facilitate the connection.

[0013]

[Effect of device]

 As described above, according to the present invention, by providing the conical guide portion at the tip of the male screw portion at the bottom of the boring rod, the boring rod can be easily centered and connected, and the connecting work efficiency is improved.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment.

FIG. 2 is an enlarged explanatory view showing a main part of the embodiment.

FIG. 3 is a side view of the embodiment.

FIG. 4 is an enlarged explanatory view showing a main part of another embodiment.

FIG. 5 is a side view of another embodiment.

FIG. 6 is a plan view showing a state of a placing operation using the excavating device.

FIG. 7 is a front view of the state of the placing work.

FIG. 8 is an enlarged explanatory view showing a lower end of a conventional boring rod.

[Explanation of symbols]

 1 Boring Rod 2 Inner Rod 3 Outer Rod 4 Male Threaded Part 5 Female Threaded Part 6 Guide Part 7 Male Threaded Part 8 Female Threaded Part 9 Spanner Hooking Part 10 Opening 11 Boring Rod 12 Inner Rod 13 Outer Rod 14 Male Threaded Part 15 Female Threaded Part 16 Guide Part 17 Male screw part 18 Female screw part 19 Missing number 20 Drilling device 21 Guide 22 Rotational impact device 23 Extension rod 24 Coupling 25 Rotary impact shaft 26 Outer rod gripping part

Claims (2)

[Scope of utility model registration request] 1. A boring rod for excavation that is driven into the ground by an excavation device while screwing the upper and lower ends of rods of a required length together to lengthen the rod, and a conical guide portion is provided at the male screw side end of the rod. Drilling rod for drilling. 2. The boring rod according to claim 1, wherein the conical guide portion is provided with a plurality of openings.