KR200228092Y1 - Down The Hole Separation Type Bit - Google Patents

Abstract

The present invention relates to a separable drill bit, the bit head 30, which is directly hit the ground 50 or a plurality of hitting pins 34 on the rock and separated from the bit body 20 of the hitting pin 34 If the degree of cohesion is severe, it is possible to replace and use only the bit head 30 without having to replace the entire component, thereby reducing the economic loss caused by waste of unnecessary parts replacement and improving the inter-part compatibility. A screw head fastening end 24 or a head fastening groove 28 is formed at a lower end of the bit body 20 so that the bit body 20 and the bit head 30 can be fastened to each other and screwed together. The body fastening groove 32 or the body fastening end 36 having a screw shape corresponding to the head fastening end 24 or the head fastening groove 28 of the bit body 20 is formed on the top of the bit head 30. It features.

Description

Down The Hole Separation Type Bit}

The present invention relates to a separable drill bit in which the bit head is separated from the bit body. More specifically, the bit head in which the hitting pin is directly hit on the ground or a rock is separated from the bit body so that the degree of engagement of the hitting pin is severe. In this case, the present invention relates to a separate punched bit in which the bit head and the bit body are separably fastened to each other so that only the bit head can be replaced without having to replace the entire component.

In general, the punch bit (Bit) is a hitting means used for surface drilling such as mines, earth anchors, geological surveys, groundwater development, etc. by fastening to hammers. Destroy the role.

The drill bit is composed of a body part subjected to impact transmitted from the hammer and a head part embedded with high-strength blow pins that transmit the impact to the rock, and the service life of the drill bit is determined by wear and break of the hit pin. In general, the life of the hitting pin can be shortened depending on the irregular rock type and environmental changes.

On the other hand, the perforated bit is fixed by inserting the beat body into the hammer shank and the externally exposed bit head hits the ground or rock according to the hydraulic operation of the hammer, in which case the hitting pin of the bit head hits the ground or rock Compared with the parts, the blow pins have a severe deficiency.

By the way, the punch bits so far cannot reuse only the blow pins that easily cause the blow deficiency since the bit head protruding the blow pin is formed integrally with the bit body, and as a result, the entire punch bit must be replaced. Even this possible bitbody had a problem that had to be discarded before its lifetime.

Therefore, the present invention was devised to solve the problem of the conventional integrated punching bits, and the entire configuration is made when the binding pins of the hitting pins are severe by separating and configuring the bit head directly hitting the ground or rock on the ground or rock. Its purpose is to provide a separate punched bit that can be fastened to the bithead and the bit body to be separated from each other so that only the bit head can be replaced without the need to replace parts.

1 is a perspective view of the basic structure separated state of the perforated bit according to the present invention.

Figure 2 is a structural diagram of the basic structure separated state of the punch bit according to the present invention.

Figure 3 is a structural diagram of the application structure separation state of the drill bit according to the present invention.

Figure 4 is a state of use of the hammer shank coupled to the drilled state punched bit of the present invention.

Explanation of symbols on the main parts of the drawings

10: punch bit 20: beat body

22: hammer fixed wing 24: head fastening

26: foot valve 28: head fastening groove

30: bit head 32: body fastening groove

34: blow pin 36: body fastening

40: hammer shank

In the drill-type drill bit of the present invention for achieving the above object in the drill bit consisting of a bit body is installed in the longitudinal direction to the hammer shank and a bit head protruding the blow pin to hit the ground or rock, A screw-type head fastening end or head fastening groove is formed at the lower end of the bit body so that the bit body and the bit head can be screwed to each other and correspond to the head fastening end or the head fastening groove of the bit body. Body fastening groove or body fastening end of the screw is characterized in that formed on the top of the bit head.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 and 2 illustrate the separated state of the basic structure before the bit body 20 and the bit head 30 constituting the punch bit 10 according to the present invention are integrally coupled to each other, and FIG. 3 is the present invention. Figure 4 shows the separated state of the application structure before the bit body 20 and the bit head 30 constituting the punch bit 10 by integrally coupled to each other, and Figure 4 is a combined state punch bit 10 of the present invention It shows the state of use by fitting the hammer shank 40 to.

As shown in the figure, the separable drill bit of the present invention is configured to separate the bit head 30 from the bit body 20 directly hitting the ground pin 50 or the rocking pin 34, the impact pin ( If the degree of cohesion of 34) is severe, a separate structure is formed by screwing together so that only the bit head 30 can be replaced and used without replacing the entire component.

That is, the bit head 20 of the bit body 20 to which the bit head 30 is fastened so that the bit body 20 and the bit head 30 can be screwed together to form a single drilled bit 10. At the bottom, as shown in the basic structure of Figs. 1 and 2, the head fastening end 24 protruding downward in the form of a screw is projected or upwardly recessed inward in the form of a screw as shown in the application structure of Fig. 3. The head fastening groove 28 is grooved.

And, the upper end of the bit head 30 to be screwed corresponding to the head fastening end 24 head fastening groove 28 of the bit body 20, as shown in the basic structure of Figs. The body fastening groove 32 which is recessed downward inward as a screw form is formed in a groove, or the sea fastening end 36 which protrudes outward as a thread form as shown in the application structure of FIG. The head 30 and the bit body 20 can be integrally screwed together.

Meanwhile, the bit body 20 in which the head fastening end 24 or the head fastening groove is formed at the lower end thereof is fixed to the outer periphery so that the hammer shank 40 can be fitted and fixed in the longitudinal direction as shown in FIG. 4. A plurality of hammer fixed wings 22 are formed at an interval, and the upper end of the foot valve 26 is formed to project the hydraulic power through the hammer shank 40 to be transmitted.

In addition, the bit head 30 in which the body fastening groove 32 or the body fastening end 36 is formed at the upper end portion has a plurality of striking pins 34 directly contacting the ground and protruding as a circular protrusion.

As described above, the separated punched bit 10 of the present invention is configured by separating the bit body 20 and the bit head 30 and being integrally formed by screwing each other, and the impact energy transmitted through the hammer shank 40 is the bit body ( 20 is transmitted to the bit head 30 exposed to the outside of the bottom of the hammer shank 40 while the ground 50 or the rock is hit by the striking pin 34 of the bottom of the bit head 30 slowly broken You lose.

Then, if the deficiency of the blow pin 34 is severe by the drilling operation, the bit head 30 protruding the blow pin 34 without having to replace the entire components of the punch bit 10 from the hammer shank 40 ) Only by separating and detaching from the bit body 20 to replace the normal bit head 30 to fix the combination can continue the drilling work, and according to the working environment of the ground (50) or rock for drilling work By simply replacing only the bit head 30 having the striking pin 34, the compatibility of the punch bit 10 can be improved.

As described above, according to the ground perforation bit of the present invention, the bit head, in which a plurality of hitting pins are hit directly on the ground or rock, is separated from the bit body to replace the entire component when the hitting pin is severely bound. By replacing only the bit head without the need, it is expected to reduce the economic loss caused by unnecessary waste of spare parts replacement and improve the inter-part compatibility.

Claims (1)

A drill bit consisting of a bit body 20 which is installed and fitted into the hammer shank 40 in a longitudinal direction, and a bit head 30 protruding from a plurality of hitting pins 34 to strike the ground 50 or a rock. To A screw head fastening end 24 or a head fastening groove 28 is formed at the lower end of the bit body 20 so that the bit body 20 and the bit head 30 may be fastened to each other and screwed together. In addition, the body fastening groove 32 or the body fastening end 36 of the screw shape corresponding to the head fastening end 24 or the head fastening groove 28 of the bit body 20 is formed on the top of the bit head 30. Removable drill bit, characterized in that formed.