• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a rock drilling bit which is installed at the end of an excavator that drills the ground during tunnel construction or building foundation construction to excavate a rock that appears during the excavation construction, and is particularly installed at the drum bottom constituting the rock drilling bit. A pair of central shredding rollers installed at the center of the drum are installed so that the bottom line structure of the shredding roller group is almost close to the plane, but always enters the rock vertically with little bit left and right during excavation work. The inclined surface is formed on the lower outer periphery corresponding to about one-third, and the inclined surface is installed to be inclined inward so that the inclined surface is horizontal to the rock bottom surface on each bearing formed with axial coupling portions on both sides. The crushing roller By offsetting the force that is going to be opened to the outside, the excessive force applied to the bearing and the shredding roller is essentially eliminated to increase the life of the shredding roller and to prevent the deformation of the bottom line structure of the whole shredding roller group. It is to maximize.
    公开号:KR19990030452A
    申请号:KR1019980063638
    申请日:1998-12-31
    公开日:1999-04-26
    发明作者:김철응
    申请人:김철응；
    IPC主号:
    专利说明:

    Rock Excavation Bit
    The present invention relates to a rock drilling bit is installed at the end of the excavator drilling the ground during the tunnel construction or building foundation work to excavate the rock that appears during the excavation.
    In general, in the excavation of rock, it is connected with external power and rotates, and a bit formed by a drum having a plurality of shredding rollers embedded with cemented carbide tips or diamonds in the circumferential direction at the end of the hollow shaft to be connected and used for a long time according to the excavation depth. Using a rock excavator equipped with a bar, which rotates the hollow shaft of the rock excavator with an external force, the crushing roller of the bit installed on the end of the hollow shaft is in close contact with the rock and rotated, the crushed rock crushed powder It was configured to be sucked to the outside through the inside of the hollow shaft with water supplied to the outer peripheral side of the drum from the outside.
    In such a rock excavator, the configuration of the bits having a plurality of crushing rollers is the most important, and according to the configuration of the bit, it makes a huge difference in the function and performance of the rock excavator.
    However, the configuration of the bit used in the rock excavator developed so far is that the bottom line structure of the shredding roller group 2 installed in the drum 1 as shown in Figs. 1A and 1B is a flat or simple circle. Due to the arc shape, the excavation work cannot be vertically drilled and pushed to one side, so it is not only a failure factor of the excavation work, but also the hollow shaft may be bent or damaged during work, which may cause the excavator to fail. It was a cause.
    In addition, a pair of idle idle central shredding rollers (2a) installed in the center of the drum (1) is coupled to only one bearing (3) made of a metal plate only on the outer end without bearings at the inner end, respectively, bearings (3) ), The center shredding roller (2a) was easily damaged and the center shredding roller (2a) was left or right due to the force (F) that occurs naturally in the direction of the arrow from the bottom of the rock during rock drilling. The bearing capacity of the bearing 3 to cope with the right side is weak and continues to tremble severely to the left and right, and naturally occurs. This phenomenon is faster as the strength of the rock is stronger.
    Therefore, when the central shredding roller 2a is severely shaken to the left and right as described above, the local shredding of the central shredding roller 2a itself as well as the entire shredding roller group 2 installed on the bottom of the drum 1 is thereby performed. The bottom line structure was messed up and the whole shredding roller group (2) was damaged, which resulted in the excavation work no longer being carried out, and the bit itself was expensive, resulting in enormous financial loss.
    In view of the above problems, there is a patent application No. 97-69451, which is a pre- filed invention, which is installed in the bottom of the drum 10 as shown in FIGS. 2A and 2B. Install the shredding roller group 20 so that the bottom line structure of 20) forms a conical shape with a W-shape forming a light beam, so that the bit always penetrates the rock vertically during the excavation work so that the excavation hole is distorted and needs to be reworked. In addition to preventing in advance, by installing a pair of central shredding roller (20a) installed in the center of the drum 10 in a long shape on a single shaft (21) and configured to support the center by the auxiliary shaft support (31) In addition to preventing the bearing 30 from being easily damaged during rock excavation, the force acting in the direction of the arrow above all (F ), The support force of the bearing 30 and the auxiliary bearing 31 is relatively strong to cope with the phenomenon that the long-length central shredding roller 20a vibrates to the left and right severely. There is a fear that the bottom line structure of the broken or the entire shredding roller group 20 is deformed to facilitate the excavation work.
    However, the applicant's prior application of the present invention is to install the long-shaped central shredding roller 20a installed in the center of the drum 10 on the single shaft 21, the center is supported by the auxiliary shaft support 31 during rock excavation work Breakage of the long crushing central shredding roller 20a can be reduced to some extent, but the force F acting in the direction of the arrow continues to act so that excessive force is continuously applied to the long crushing central shredding roller 20a. Since it is not a direct and fundamental measures to protect the long crushing central shredding roller (20a) is to reduce the life of the long crushing central shredding roller (20a), as well as the deformation of the bottom line structure of the entire shredding roller group (20) The import was fundamentally inevitable.
    In addition, in the case of the outer crushing roller and the intermediate crushing roller, the outer crushing roller and the intermediate crushing roller rotate in a circle around the hollow shaft. Excessive force was applied due to the phenomenon of unfolding outwards, which also shortened the life of each intermediate shredding roller and the outer shredding roller.
    The present invention has been made in view of various problems that may occur in the conventional rock drilling bit structure as described above, while the bottom line structure of the crushing roller group installed on the drum bottom is installed near the plane while the bit at the excavation work A pair of central shredding rollers are installed at the center of the drum so that they always penetrate the rock vertically with almost no shaking left and right. The inclined surface is installed to be inclined inward so that the inclined surface is horizontal to the rock bottom surface on each bearing formed with the engaging portion so as to act on the inclined surface of the central shredding roller inward to collide with the force that the shredding roller tries to open outward. Bearings and shredding rolls by offsetting By removing the force to essentially increase the life of the crushing rollers to be applied to, as well as to avoid deformation of the bottom wire structure of the entire crushing roller group it will put its purpose as to maximize drilling efficiency.
    Figure 1a and Figure 1b is a bottom line configuration diagram of the conventional crushing roller group of rock drilling excavation bit,
    Figure 1a is a state in which the bottom line of the shredding roller group is configured horizontally.
    Figure 1b is a state in which the lower end of the shredding roller group is configured in an arc shape.
    2A and 2B are diagrams showing the configuration of the applicant's prior application No. 97-69451,
    Figure 2a is a bottom perspective view.
    Figure 2b is a bottom line configuration diagram of the shredding roller group.
    Figure 3 is a bottom line configuration of the shredding roller group of the present invention.
    Figure 4 is a main configuration of the central shredding roller of the present invention.
    Figure 5 is a cemented tip combined state of the outer shredding roller and the intermediate shredding roller of the present invention.
    ♣ Explanation of symbols for the main parts of the drawing
    100: drum 200: shredding roller group
    200a: center shredding roller 250a: sloped surface
    300: bearing 300a: shaft coupling portion
    The present invention for achieving the above object is rock excavation to excavate the rock that appears during the excavation work is installed at the end of the excavator drilling the ground during tunnel construction or building foundation construction as shown in the accompanying drawings Figures 3-4 In configuring the bits for
    A pair of central shredding rollers 200a installed at the center of the drum 100 constituting the bit forms a slope 250a in which a carbide tip is coupled to the surface of the lower outer periphery corresponding to about 1/3 of the body length. The inclined surface 250a is inclined inwardly so as to be horizontal with the rock bottom surface 400 on each bearing 300 having the shaft coupling portions 300a formed at both sides thereof, and on the inclined surface 250a of the central crushing roller 200a. It was configured to offset the force (F) to open the central shredding roller (200a) to the outside by acting a force (F ') corresponding to the inside.
    Here, the outer crushing roller (200b) is installed on the outermost side of the center crushing roller (200a) is installed so that the inclined surface (250a) formed on the outer periphery of the lower end is parallel to the rock bottom surface 400 is the rock bottom surface (400) ) Installed slightly inclined inward, and the intermediate shredding rollers 200a installed between the central shredding roller 200a and the outer shredding roller 200b are most ideal when the shredding rollers are installed horizontally with the rock bottom surface 400. The bottom line structure of the (200), the outer shredding roller (200b) and the intermediate shredding roller (200c) is divided into a predetermined angle to match the inclination angle formed on each roller body as shown in Figure 5 Then, the cemented carbide tip 210 is joined in a diamond shape to coincide with the divided angular dividing line. The tip 210 is densely constructed so that the force received from the rock bottom surface in the roller body inward direction from the outside of the roller body of the outer crushing roller 200b and the intermediate crushing roller 200c is concentrated upon rock drilling. It was to be offset by the force to be built.
    When the rock drilling operation is carried out by mounting the rock drilling bit of the present invention configured as described above, the central shredding roller 200a installed at the center of the drum 100 has a shaft bearing portion 300a formed at both sides thereof. Both ends are firmly coupled by the 300, so the force to withstand external shocks is very strong and there is no fear of breakage.
    In addition, above all, the force F acting outwardly as in the direction of the arrow during the rock excavation operation collides with the force F ′ acting inwardly as in the direction of the arrow on the inclined surface 250a of the central crushing roller 200a. Since the excessive force applied to the bearing 300 and the central shredding roller 200a is essentially eliminated, the central shredding roller 200a is not shaken or opened at all, so that the rock can be straightened vertically during the excavation work. do.
    In addition to the central shredding roller 200a as well as the outer shredding roller 200b and the intermediate shredding roller 200c, the rollers are divided at a predetermined angle to match the inclination angle formed on the roller body. The cemented carbide tip 210 is combined in a diamond shape so that the cemented carbide tip 210 is densely formed as the outer diameter of the roller body is smaller than the outer roller body. 200b) and the intermediate crushing roller (200c) by the force from the rock bottom surface in the roller body inward direction from the outer side of the roller body intensively collides with the force to be opened to the outside to cancel and offset each of the crushing roller (200) Unreasonable force is not applied to the bearing 300 of the drum 100 is shaken Or give by eliminating the phenomenon of damage to further facilitate drilling.
    The present invention as described above is a pair of central shredding rollers installed in the center of the drum constituting the rock drilling bit to excavate the rock appearing during the excavation construction is installed at the end of the excavator drilling the ground during tunnel construction or building foundation construction On the bottom outer periphery corresponding to about one-third of the length of the body, the inclined surface is formed by coupling the carbide tip to the surface, and the inclined surface is inclined inward so that the inclined surface is horizontal to the rock bottom surface on each bearing formed with axial coupling on both sides. By applying the force (F ') corresponding to the inward side of the shredding roller, the central shredding roller is configured to be offset from the force (F) that tries to open outward, thereby eliminating excessive force applied to the bearing and the central shredding roller. The central shredding roller is not opened or shaken When the rock work can directly penetrate vertically.
    In addition to the above-described center shredding rollers, the outer shredding rollers and the intermediate shredding rollers are divided at regular angles in accordance with the inclination angle formed on the roller body. Carbide tips are formed more densely as they come to the inside of the roller body with a smaller outer diameter than the outside of the large roller body. Therefore, the rock bottom in the roller body where the carbide tips of the outer and inner shredding rollers are densely formed during rock excavation work. When the force received from the surface is concentrated to collide with the force to be opened to the outside to cancel the drum sway due to the excessive force is not applied to the outer shredding roller and the intermediate shredding roller and the bearings respectively connecting them Excavation work is easier by eliminating.
    Therefore, there is no failure factor of rock excavation work such as not drilling the rock vertically and pushing it to one side, but also shortening the life of the bearing or a pair of central shredding rollers during operation, as well as bits due to structural deformation of the whole shredding roller group. It is a very innovative and novel invention that has the effect of maximizing the excavation work efficiency such as shortening the construction period and reducing the financial loss due to long life, long service life and repair of damaged bits. .
    权利要求:
    Claims (2)
    [1" claim-type="Currently amended] In the construction of rock excavation bits installed at the end of the excavator that drills the ground during tunnel construction or building foundation construction to excavate the rock that appears during the excavation construction,
    A pair of central shredding rollers installed in the center of the drum forms a sloped surface where the carbide tip is coupled to the surface on the lower outer periphery corresponding to about one third of the body length, and the sloped surface is formed on each bearing formed with shaft coupling portions on both sides. The rock drilling bit is installed so as to be inclined inward so as to be horizontal with the bottom surface so as to offset the force to the outside of the crushing roller by acting a force corresponding to the inside to the inclined surface of the crushing roller.
    [2" claim-type="Currently amended] The method of claim 1,
    The outer shredding roller and the intermediate shredding roller installed at the outside of the pair of central shredding rollers installed at the center of the drum are divided at predetermined angles to match the inclination angles formed on the roller bodies, and then the carbide tips are aligned with the divided angle division lines. Combined with diamond shape, the carbide tips are formed more densely as the outer diameter of the roller body is larger than the outer diameter of the roller body, so the force is concentrated in the roller body of the outer crushing roller and the intermediate crushing roller. Rock drilling bit, characterized in that configured to be offset by collision with the force to be opened to the outside.
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    同族专利:
    公开号 | 公开日
    KR100302078B1|2001-11-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1998-12-31|Application filed by 김철응
    1998-12-31|Priority to KR1019980063638A
    1999-04-26|Publication of KR19990030452A
    2001-11-22|Application granted
    2001-11-22|Publication of KR100302078B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019980063638A|KR100302078B1|1998-12-31|1998-12-31|Bit for excavating bedrock|
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