KR200271749Y1 - Rock Drill with Rotation-Type breaker - Google Patents

Abstract

The present invention relates to a rock drilling device having a rotary breaker configured to effectively crush the object to be provided with a breaker for rotating the striking body in the rock drilling device used for breaking rock, stone, concrete and the like.

The present invention is a rock drilling device having a rotary breaker for hitting a rock or concrete hitting object by rotating the hitting body, the rod hitting the hitting object and a spiral-shaped first formed on the surface (Rod), pressure An impact piston that strikes the rod by an up and down reciprocating motion, a cylinder for accommodating the impact piston, and a rod that surrounds the rod, and interlocks with the first forming member therein, thereby rotating in a direction perpendicular to the rod. It characterized in that it comprises a rod sleeve formed with a second forming body for providing a

According to the present invention, by breaking the rod in the breaker (Rod) while the rock and the like can further improve the crushing performance, and also has the effect of reducing the work time to improve the work efficiency. In addition, since the up and down reciprocating motion of the rod is made vertically, the scratch of the scratch and the inside of the rod slitting part which are caused by the piston of the conventional breaker do not strike the rod vertically correctly can be drastically reduced. It has an effect.

Description

Rock drill with rotary breaker {Rock Drill with Rotation-Type breaker}

The present invention relates to a rock drilling device having a rotary breaker, and more particularly, a rotary rocker having a breaker for rotating the hitting body in a rock drilling device used for breaking rock, stone, concrete, etc. A rock drilling device having a breaker.

Recently, due to the rapid economic growth, there are a lot of land development projects such as building infrastructure such as roads and bridges, or reclaiming mountainous land due to lack of housing due to dense population. In the case of such a construction, a rock drill for breaking a hard asphalt layer or concrete layer is used to repave a pavement along with an excavator for excavating the ground. Among them, the rock drilling machine is a crushing machine used to crush rocks in civil engineering or construction, as well as asphalt or concrete, or to demolish an old building.

1 is a view schematically showing the shape of a conventional rock drilling device equipped with a breaker.

In FIG. 1, the conventional rock drilling apparatus has a hitting body (Rod: 110, hereinafter referred to as a 'rod') hitting a rock or concrete, and a breaker (120) that causes vibration by applying a shock to the rod 110, The supporter 130 absorbs the reaction force by the impact of the breaker 120, the shovel arm that supports the vertical movement of the supporter 130 (Shovel Arm: 140), the supporter 130 and the shovel arm 140 for rock drilling work ) And a control unit 150 for controlling the breaker 120.

FIG. 2 is a view schematically showing the internal configuration of the breaker 120 shown in FIG. 1, and the same reference numerals are attached to the same parts as in FIG. 1, and detailed description thereof will be omitted.

The conventional breaker 120 illustrated in FIG. 2 has an upper locking jaw 210 for stopping the progress of the rod 110 in the lower direction, and a lower locking jaw for stopping the progress of the rod 110 in the upper direction ( 212), the upper locking pin 214 to hook the lower locking jaw 210 of the rod 110, the lower locking pin 216 to hook the upper locking jaw 212 of the rod 110, by pressure action Shock piston (Piston: 220) that strikes the rod 110 by performing the up and down reciprocating motion, a cylinder (Cylinder: 230) for accommodating the impact piston 220, wraps the rod 110, and up and down the rod 110 Rod sleeve 240 for reciprocating motion, cushion damper 250 for mitigating shock from cylinder 230, protective casing 260 for protecting internal structure, pressure oil for hydraulic supply Space 270 or the like.

In the conventional rock drilling device configured as described above, the driver performs driving by standing on the control unit 150 and manipulating a plurality of control keys. The shovel arm 140 and the supporter 130 are moved to crush the breaker 120. It is located on the target rock. When the driver operates the breaker 120, the pressure oil is supplied to the pressure oil space 270 in the breaker 120, and the piston 220 in the cylinder 230 impacts the rod 110 by the pressure oil. The impacted rod 110 is to strike a rock or the like.

That is, after the rod 110 is hit by the piston 220, the rod 110 proceeds downward, and the upper locking jaw 210 of the rod 110 is caught by the upper locking pin 214 to stop the downward movement. The rod 110 proceeds upward by the force of the supporter 130, the shovel arm 140, and the breaker 120. The lower catching jaw 212 of the rod 110 has a lower catching pin 216. It stops and the process to the upper direction is stopped. Accordingly, the rod 110 reciprocates up and down by the height h in FIG. 2. In this operation, the piston 220 repeatedly impacts the rod 110, and the rod 110 repeatedly impacted by the piston 220 continuously strikes the rock or the like so that the crushing operation is performed. will be.

However, the rock crushing work or the concrete demolition work using such a rock drill device depends only on the hitting force generated by hitting the rod 110 by the up-and-down reciprocating motion of the piston 220 inside the breaker 120. Therefore, there is an urgent need for a means capable of increasing the crushing force of rock or concrete by applying a physical force other than the force of the up and down reciprocating motion.

In order to meet the above-mentioned demands, the present invention has a rocking device having a rotating breaker having a hitting body that strikes a crushing object while rotating inside the breaker of the rock drilling device, thereby improving the crushing performance of the rock drilling device by a combination of the impact force and the rotational force. The purpose is to provide.

1 is a view showing the configuration of a conventional rock drilling device equipped with a breaker,

2 is a view schematically showing the internal configuration of the breaker shown in FIG.

3 is a view showing a cross-sectional shape of the hydraulic rotary breaker according to the first embodiment of the present invention,

4 is a view showing the shape of a rod on which protrusions are formed;

5 is a view showing the shape of the groove formed rod sleeve,

6 is a view showing the shape of a rod according to a second embodiment of the present invention,

7 is a view showing the shape of a rod according to a third embodiment of the present invention,

8 is a view showing the shape of a rod sleeve according to a third embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

110: hitting body (Rod) 120: conventional breaker

130: supporter 140: shovel arm

150: control body 220: piston

230 cylinder 240 rod sleeve

250: shock attenuator 260: protective casing

270: pressure oil space 300: breaker

310: First Embodiment Rod Sleeve 320: First Embodiment Rod

322: projection of the first embodiment 510: groove of the first embodiment

610: Second Embodiment Rod 620: Second Embodiment Projection

710: Third Embodiment Rod 720: Third Embodiment Groove

810: Third Embodiment Rod Sleeve 820: Third Embodiment Projection

In order to achieve the above object, the present invention is a rock drilling device having a rotary breaker for rotating the striking body to strike a rock or concrete striking object, the first formed body having a spiral shape hitting the striking object The formed rod, a shock piston that strikes the rod by an up and down reciprocating motion under the action of pressure, a cylinder for accommodating the impact piston, a rod surrounding the rod, and interlocked with the first forming member therein, It provides a rock drilling device having a rotary breaker, characterized in that it comprises a rod sleeve formed with a second forming body that provides a rotational force in a direction perpendicular to the rod.

The first and second formations are characterized in that the rod surface is a spiral projection of a columnar shape in the vertical direction or a groove formed spirally along the inner wall of the rod sleeve. The action of the pressure is characterized in that the action by the compressed hydraulic oil or the action by compressed air.

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

In general, the hydraulic breaker is installed and used in rock drills, other known machines, etc., and its structure and operation are commonly known in the art, and thus detailed descriptions of components not directly related to the present invention are omitted.

3 is a view showing a cross-sectional structure of a hydraulic rotary breaker according to a first embodiment of the present invention. In FIG. 3 as well as in the following drawings, the same components as in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof will be omitted.

The hydraulic rotary breaker 300 according to the first embodiment of the present invention includes a rod sleeve 310 in which a groove 312 for spirally rotating the rod 110 is formed in a spiral shape, and the rod sleeve 310 Protruding portion 322 to be inserted into the groove 312 of the () is formed, the protrusion 322 is composed of a rod 320 that rotates along the groove 312 and performs the vertical reciprocating motion. Hydraulic rotary breaker 300 is used by mounting on a rocking device, such as a general fork crane, but can also be applied to a hand-held breaker that the user can work in both hands.

However, in Fig. 3, the pressure chamber for generating the pressure or the pressure oil transfer duct for transferring the pressure oil is not shown because it is a common technique in this field. At least one of the pressure oil transfer ducts is connected to the pressure chamber from the pressure oil space 270. Pressure oil flows into and out of the pressure chamber through the pressure oil conveying duct. The pressure chamber is provided with a diaphragm (not shown) for dividing the pressure chamber. The position of this diaphragm depends on the pressure ratio in the pressure chamber, ie on the different sides of the diaphragm. When pressurized fluid is supplied to the pressure oil space 270 of the impact piston 220 or the impact piston 220 pushes the fluid into the pressure oil space 270 during the return operation, the pressurized fluid is pressurized in the pressure oil duct. Flows into the thread. Thus, the diaphragm moves towards the pressure chamber by a distance proportional to the pressure.

4 is a view showing in more detail the rod 320 shown in FIG.

The rod 320 is formed with a spiral protrusion 322 inserted into the groove 312 of the rod sleeve 240 and spirally running along the groove 312, and the spiral protrusion 322 is formed of a rod ( It is formed in a spiral form from the upper end of the 320 in the vertical direction. The protrusion 322 has a rectangular pillar shape, but may also be formed in a cylinder or other pillar shape. The length of the protrusion 322 may be set to the maximum length within a range where there is no problem in progressing along the groove 312 in engagement with the groove 312.

5 is a view illustrating a detailed configuration of the rod sleeve 310 shown in FIG.

The rod sleeve 310 is meshed with the protrusion 322 of the rod 320 and the groove 312 for rotating the rod 320 in the up and down direction is formed spirally along the inner wall of the rod sleeve 310. . The groove 312 is spirally formed in the vertical direction such that the engaged rod 320 rotates half to one turn along the inner wall of the rod sleeve 310.

Next, operation | movement of the hydraulic rotary breaker comprised as mentioned above is demonstrated in detail.

Hydraulic fracturing devices or other hydraulic machines and devices generally employ several accumulators to even out the pressure variations resulting from the machine's operating cycle. In the present invention, an integral part formed as an annular space surrounding the impact piston 220 for equalizing the pressure variation resulting from the reciprocating motion due to the action of the hydraulic oil is referred to as an 'accumulator'. That is, the accumulator refers to the one used to even out the pressure fluctuations resulting from the shock delivered by the impact piston 220.

The annular space around the impact piston 220 is divided into two separate pressure chambers by a diaphragm. One pressure chamber is filled with a pressurized medium and the other pressure chamber is connected to the pressure oil space 270 of the impact piston 220. One side of the diaphragm is applied with a preset gas pressure. The pressurized gas may be, for example, nitrogen or another gas suitable for that purpose. The other side of the diaphragm is supplied with pressure oil which pushes the diaphragm forward. This pressure oil inherently resists the movement of the diaphragm, but is compressed due to the high pressure so that the accumulator is filled with a static pressure. This static pressure can be released or used during the next strike of the impact piston 220. Thus, the diaphragm of the accumulator performs reciprocating movement during one cycle of operation or up and down movement of the impact piston 220. When the shock piston 220 is in the upper position, the accumulator is filled with pressure oil, and when the shock piston 220 strikes and is in the lower position, the pressure oil is pushed into the pressure oil space 270 of the shock piston 220. It flows to the pressure chamber through the pressure oil transfer duct. Here, the upper position refers to the pressure oil space 270 side in the cylinder 230, and the lower position refers to the side where the impact piston 220 hits the rod 210.

First, the driver manipulates the control keys in the control unit 150 to move the shovel arm 140 and the supporter 130 to position the rod 320 of the breaker 300 on a rock or concrete, and the load of the breaker 300 The crushing target is pressed against the supporter 130 and the shovel arm 140 together. In the state in which the fracture object such as rock or concrete is pressed by the rod 320, the user operates the pressure chamber to vibrate the rod 320 up and down. ). The pressure oil supplied to the pressure oil space 270 causes the impact piston 220 to move and strikes the rod 320 under the impact piston 220. Therefore, the rod 320 hit by the impact piston 220 proceeds in the lower direction. At this time, since the grooves 312 spirally formed along the inner wall of the rod sleeve 310 and the protrusion 322 of the rod 320 are engaged, the rod 320 rotates and descends along the spiral grooves 312. . As a result, the rod 320 that is instantaneously hit by the impact piston 220 is to hit the rock or concrete while rotating. Therefore, by applying the rotational force along with the impact force to the rock or concrete while the rod 320 rotates, it is possible to increase the crushing effect than to strike in the normal vertical motion. The impact action of the impact piston 220 continues until the user stops supplying the pressure oil from the pressure chamber by operating the control keys, and the supporter 130 and the shovel arm 140 together with the load of the breaker 300. The rod 320 rises upward due to the force used to press the crushing target by the load, and the rod 320 rotates in the opposite direction along the groove 312 of the rod sleeve 310.

That is, according to the first embodiment of the present invention, the protrusion 312 is formed on the rod 320 that strikes the rock, the concrete, or the like, and the protrusion 322 is rotated in engagement with the rod sleeve 310 to proceed. The rock drilling device having the hydraulic rotary breaker in which the groove 312 is spirally formed can be realized.

On the other hand, Figure 6 is a view showing the shape of the rod according to a second embodiment of the present invention.

The rod 610 according to the second embodiment of the present invention shown in FIG. 6 is inserted into the groove 312 of the rod sleeve 310 and rods the protrusion 620 running spirally along the groove 312. 610) is formed on the upper end in the shape of a square pillar.

Of course, the groove 312 of the rod sleeve 310 for accommodating the protrusion 620 of the rod 610 is also spirally formed along the inner wall of the rod sleeve 310, and the shape of the protrusion 620 is the shape of the protrusion 620. It is formed along the square groove, it can also be formed as a circular groove or other types of grooves.

That is, since the protrusion 322 of the rod 320 according to the first embodiment has a length, a considerable friction force is generated when traveling along the groove 312, whereas the rod 610 according to the second embodiment has a protrusion 620. By shortening the length thereof to a square pillar shape, the friction force can be further reduced than the protrusion 322 according to the first embodiment.

7 is a view showing the shape of a rod according to a third embodiment of the present invention.

The rod 710 according to the third embodiment of the present invention shown in FIG. 7 is wound around the outer wall of the rod 710 and descends in a vertical direction in a spiral manner to form a recess 720 one round, and the recess 720 The shape of is formed in a square, it may be a groove of another shape such as a circular groove.

8 is a view showing the shape of a rod sleeve according to a third embodiment of the present invention. The rod sleeve 810 shown in FIG. 8 forms a spirally continuous protrusion 820 along the inner wall thereof, the shape of the rod sleeve 810 is formed in a rectangular column shape, and may be formed in other shapes such as a cylindrical shape.

That is, the rod 710 according to the third embodiment of the present invention is stable in descending while rotating about half or one round in the vertical direction by forming the grooves 720 in the rod 710 itself for reciprocating motion Will proceed.

On the other hand, in the first to third embodiments of the present invention, the operation of the breaker 300 has been described as hydraulic, but can be realized by pneumatic.

In the above description, the cross sections of the protrusions 322, 620, 820 and the recesses 312 and 720 have been described as being rectangular, but the cross-sectional shape of the protrusions 322, 620, 820 and the recesses 312 and 720 is triangular or semicircular. Rather, the triangular or semi-circular configuration may be more suitable to withstand mechanical loads in both directions, and may be more advantageous in eliminating stones and dust.

That is, it is possible to selectively block the inflow of compressed air into the cylinder 230, the impacted air impacts the impact piston 220 by hitting the impact piston 220, the impacted piston 220 hits the rod 320 to crush the rock, etc. Can be configured to do this.

It will be understood by those skilled in the art that various modifications and changes can be made without departing from the spirit and scope of the present invention.

As described above, according to the present invention, it is possible to realize a rock drilling device having a rotary breaker configured to rotate in the longitudinal direction and vibrate along the inner wall where the striker vibrates inside the breaker of the rock drilling device. Therefore, by hitting the rock or the like while the impactor in the breaker of the rock drilling device rotates, there is an effect that can further improve the crushing performance. In addition, since the shredding time is shortened, the working time is shortened, thereby improving the work efficiency.

In addition, the rotary breaker of the present invention has a vertical reciprocation of the rod (Rod) is precisely made vertically, the scratch (scratch) in the inside of the uneven wear and the rod sleeve portion generated by the piston of the conventional breaker does not hit the rod vertically correctly There is an effect that can significantly reduce the occurrence.

Claims (11)

In the rock drilling device having a rotary breaker for rotating the hitting body to strike a rock or concrete hitting object, A rod striking the striking object and having a spiral first formation formed on a surface thereof; An impact piston striking the rod by a vertical reciprocating motion under the action of pressure; A cylinder for receiving the impact piston; A rod sleeve surrounding the rod and having a second body formed therein to provide rotational force in a direction perpendicular to the rod by interlocking with the first body. Rock drilling device having a rotary breaker, characterized in that it comprises a. The method of claim 1, The first forming body, And a helical protrusion formed in the vertical direction on the surface of the rod so as to mesh with the second formation of the rod sleeve and spirally along the second formation. The method of claim 1, The second formed body, And a recess formed in a spiral form along an inner wall of the rod sleeve to engage the first forming member of the rod to rotate the first forming member in a vertical direction. The method of claim 1, Rocking device having a rotary breaker, characterized in that the action of the pressure in the cylinder is the action by the compressed hydraulic oil. The method of claim 1, Rocking device with a rotary breaker, characterized in that the action of the pressure in the cylinder is by the action of compressed air. The method of claim 1, The first forming body, And a columnar protrusion formed in an upper end portion of the rod surface to mesh with the second forming member of the rod sleeve and spirally move along the second forming member. The method of claim 1, The first forming body, Rock drilling device having a rotary breaker, characterized in that the groove is a groove wound in a spiral wound along the surface of the rod. The method of claim 1, The second formed body, Rock drilling device having a rotary breaker, characterized in that the spiral projection in the vertical direction along the inner wall of the rod sleeve. The method of claim 6, The protrusion has a rock drilling device having a rotary breaker, characterized in that the shape of a square pillar or a circular pillar. The method according to claim 3 or 7, The shape of the groove is rock drilling device having a rotary breaker, characterized in that the rectangular groove shape or circular groove shape. The method of claim 1, The outer shape of the breaker is rocking device having a rotary breaker, characterized in that the hand-held breaker that can work in the hand.