KR101285286B1 - Adjusting device for preventing idle impact of hydraulic breaker - Google Patents

Abstract

The present invention connects the upper high pressure line 21, the lower high pressure line 22, the return line 23, the valve switching line 25 on the cylinder 10, and the chisel 13 to the operating force of the piston 12. In the breaker which is transmitted to the blower: Anti-ballast formed by branching the upper branch passage 31 and the lower branch passage 32 on the high-pressure passage 11 of the cylinder 10 in communication with the lower high pressure line 22 Line 26; And a control screw 35 installed on the lower flow path 32 of the anti-ballout prevention line 26 to control the upper branch flow path 31 of the anti-ballout prevention line 26 and the anti-ballout prevention line 26. It is provided on the upper branch flow path 31, the adjusting means 30 made of a transmission means 40 to control the upper branch flow path 31 of the anti-ballout prevention line 26; Adjusting screw 35 of the) is formed with a structure that is exposed to one end having a control groove 36 on the outer end so as to be rotatable from the outside is coupled with a nut 38 to prevent any loosening of the adjusting screw 35 , The other end is composed of a blocking portion 35-1 for controlling the upper branch flow path 31 of the anti-ballout line 26 by the rotation operation of the adjustment screw 35, the transmission means of the adjustment means (30) 40 is for the operation of the rod 46 and the solenoid 45 of the solenoid 45 to control the upper branch flow path 31 of the anti-ballout line 26. And, the solenoid 45, a controller 42, which is characterized in that it is configured to reverse to the load 46 is kept open upper branch flow passage 31 when the power is not supplied.
Accordingly, it is easy to select the anti-spinning function according to the type of rock or the working conditions, so that the effectiveness can be increased regardless of the inclination of the operator.

Description

Adjusting device for preventing idle impact of hydraulic breaker

The present invention relates to an anti-static control mechanism of a hydraulic breaker, and more particularly, an hydraulic breaker that can increase the effectiveness regardless of the inclination of the operator by the easy operation of selecting the anti-static function according to the type of rock or working conditions It relates to an anti-static control mechanism.

In general, the hydraulic breaker requires a relatively high durability and reliability in the overall configuration including the hydraulic circuit because a large impact acts momentarily in the process of crushing the rock or concrete structure by hitting the chisel with a piston. Nevertheless, a blow from a piston hit with no load on the chisel will amplify the shock throughout the system, including the cylinder, resulting in damage and reduced durability. As a prior patent for preventing such a pulsation phenomenon, the "anti-air strike structure of the hydraulic breaker" of Korean Unexamined Patent Publication No. 2010-0107261, the "anti-air breaker of the hydraulic breaker" of Korea Patent Publication No. 0510966 is found.

Korean Unexamined Patent Publication No. 2010-0107261 has an anti-slip groove formed in the lower chamber to reduce the lowering speed of the piston, to hold the center of the piston, and to prevent the piston from repulsing upward; Between the lower chamber and the valve driving chamber, a high pressure hydraulic pressure is supplied to the hydraulic valve side to raise the hydraulic valve so that a high pressure hydraulic pressure port is formed to guide the low pressure discharge line; The low pressure discharge chamber for discharging the high pressure hydraulic pressure flowing into the upper chamber through the high pressure supply line, the hydraulic valve, the upper chamber line on the inner peripheral surface of the cylinder body between the valve drive chamber and the upper chamber; This is expected to reduce the manufacturing cost of the hydraulic breaker because the anti-ballast structure is made by a relatively simple operation.

Korean Patent Publication No. 0510966 includes a control valve having a cylinder, a piston, a chisel, and two valve hydraulic pressure surfaces having different areas, and an inner diameter of the cylinder is provided with a switching port and a drain port. A hydraulic breaker, comprising: an anti-ballout port connected to a supply line in an inner diameter portion of a cylinder; When the piston moves past the striking position to the vacant position, the anti-ballout port, the switching port and the drain port communicate with each other through the annular groove of the piston so that the hydraulic oil of the supply line is bypassed to the return line; The anti-vibration line connecting the anti-vibration port and the supply line is provided with a flow resistance means for generating a flow resistance in the flow rate so that the control valve is limited to the first position when the anti-ball function is in operation. In addition to extending the life of the product and improving the blow efficiency, it is expected to deactivate the anti-ball protection function according to the type of crushed material to improve the work efficiency.

However, according to the former patent, although it is structurally simple, it does not satisfy the variable response according to the type of rock or working conditions. According to the latter prior patent, it is easy to avoid the plug unplugging and changing the direction of the valve. .

An object of the present invention for improving the conventional problems as described above, the operation of selecting the anti-ballout function according to the type of rock or working conditions is easy to operate the hydraulic breaker can increase the effectiveness regardless of the propensity of the operator An anti-regulation mechanism is provided.

In order to achieve the above object, the present invention connects the upper high pressure line, the lower high pressure line, the return line, the valve switching line on the cylinder, and in the breaker to transfer the operating force of the piston to the chisel hitting: to the lower high pressure line An anti-ballout line formed by branching an upper branch flow path and a lower branch flow path on a high pressure flow path of a communicating cylinder; And a control screw installed on the lower flow path of the anti-ballout line to control the upper branch flow path of the anti-ballout line and an electric drive installed on the upper branch flow path of the anti-ballout line to control the upper branch flow path of the anti-ballout line. Adjusting means made of a means; and the adjusting screw of the adjusting means is formed in a structure that is exposed to one end having an adjustment groove on the outer end so as to be rotatable from the outside to prevent any loosening of the adjustment screw and It is coupled, the other end is composed of a blocking portion for regulating the upper branch flow path of the anti-ballout prevention line by the rotating operation of the adjustment screw, the transmission means of the solenoid rod and the solenoid to control the upper branch flow path of the anti-ballout prevention line. And a controller for controlling the operation of the solenoid, when the power is not supplied. By Jean characterized in that arranged to the upper branch channel kept open.

In addition, according to the present invention is characterized in that the adjusting screw of the adjusting means is provided with an adjusting groove at the outer end to be rotatable from the outside.

In addition, according to the present invention, the adjusting screw of the adjusting means is characterized in that to prevent any loosening through the washer and nut.

In addition, according to the present invention, the adjusting means is characterized in that it further comprises a transmission means for regulating the flow path by the solenoid on the anti-ballout line.

In this case, the transmission means is characterized in that the upper flow path is maintained by the energization of the solenoid while the input selection of the switch is maintained or for a set time after the input selection.

As described above, according to the present invention, it is easy to select the anti-spinning function according to the type of rock and the working conditions, thereby increasing the effectiveness regardless of the inclination of the operator.

1 and 2 is a schematic diagram showing the state before the anti-hit operation of the adjustment mechanism according to the present invention.
Figure 3 is a schematic diagram showing the state after the anti-hit operation of the adjustment mechanism according to the present invention.
Figure 4 is a configuration diagram showing an enlarged control mechanism according to the present invention
5 is a configuration diagram showing a transmission means in an installed state according to a modification of the present invention;

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

The present invention connects the upper high pressure line 21, the lower high pressure line 22, the return line 23, the valve switching line 25 on the cylinder 10, and the chisel 13 to the operating force of the piston 12. Relate to the breaker to hit by passing on. The upper and lower high pressure lines 21 and 22 are external pipes connected to the pump 16, the return line 23 is an external pipe connected to the drain 17, and the valve switching line 25 is at the pump 16 side. It is an external pipe that operates the main valve 15 opposite to the high pressure line. 1 and 2, the upper high pressure line 21 communicates with a space secured above the upper piston ring 12a of the piston 12 to periodically lower the piston 12, and the lower high pressure line 22. Is in communication with the space secured below the lower piston ring 12b of the piston 12 and periodically raises the piston 12. The rise and fall of the piston 12 is periodically repeated by the interruption of the return line 23 and the valve switching line 25 connected to the space formed in the middle of the upper and lower piston rings 12a and 12b.

According to the present invention, an anti-ballast line 26 is formed to branch the upper branch passage 31 and the lower branch passage 32 on the high pressure passage 11 of the cylinder 10 communicated with the lower high pressure line 22. . In FIGS. 1 and 2, the anti-ballout line 26 is branched from the lower high pressure line 22 and connected upwardly to the lower high pressure line 22 on the cylinder 10. In the lowered state of the piston 12 as shown in FIG. 1, the anti-ballout line 26 is blocked and the lower high pressure line 22 is opened to start the ascension of the piston 12. As shown in FIG. 2, since the lower high pressure line 22, the anti-ballout line 26, and the return line 23 are all opened in the raised state of the piston 12, the piston 12 starts to descend. 1 and 2 is a normal operation state in which the anti-ballout line 26 is open but a normal load acts on the chisel 13. 3, when no load or a load below the proper value is applied to the chisel 13, the piston 12 lowers beyond the set range, and thus the lower high pressure line 22 is blocked so that the piston 12 and the chisel 13 are closed. The lock is no longer operated. In the specific circuit implementation of FIG. 3, as shown in FIG. 4, the upper branch flow passage 31 and the lower branch flow passage 32 are formed in communication with the high pressure flow passage 11 on the cylinder 10 to form the anti-ballast prevention line 26. Configure.

In addition, according to the present invention is installed on the lower branch flow path 32 via an externally adjustable adjustment screw 35, the anti-ballout line 26 is interrupted in accordance with the position of the adjustment screw 35. The adjusting means 30 is installed in the lower branch flow path 32 of the anti-ballout line 26, so that one end of the adjusting screw 35 is exposed to the outside and coupled with the nut 38 coupled to prevent any loosening. do. If the adjustment screw 35 is not easily adjusted from the outside, it is difficult for an unskilled worker to adjust, and even a skilled worker may be reluctant to operate or lose some parts during the operation. On the other hand, the present invention is the upper branch flow path 31 by the blocking portion 35-1 formed at the other end of the adjustment screw 35 according to the engagement position of the adjustment screw 35 coupled to the spiral on the lower branch flow path (32). Is intermittent and can easily select whether or not to use the anti-ballout line (26).

At this time, the adjusting screw 35 of the adjusting means 30 is provided with an adjusting groove 36 on the outer end to be rotatable from the outside. The adjustment groove 36 selects a square groove that can be engaged with a wrench, a date or cross that can be engaged with a driver. As for the rotation speed which the adjustment screw 35 interrupts the flow path of the upper branch flow path 31, 1-3 times are suitable. If it is designed for less than 1 rotation, it should be adjusted too fine. If it is designed for more than 3 rotations, it causes inconvenience in use.

On the other hand, the adjusting screw 35 of the adjusting means 30 prevents the arbitrary loosening through the washer 37 and the nut 38. Since the adjustment screw 35 may be loosened arbitrarily due to vibration or there is a risk of leakage when worn, it is preferable to maintain the tight lock state by using the washer 37 and the nut 38. In this case, loosen the nut 38 slightly, turn the adjustment screw 35 a set number of times, and then tighten the nut 38 again.

As a modification of the present invention, the adjusting means 30 may further include a transmission means 40 for controlling the flow path by the solenoid 45 on the anti-ballout line 26. Due to strong rock crushing, large mass rock crushing, and prolonged working time, the anti-batting function is closed by closing the anti-batting line 26, whereas in the opposite case, the anti-batting function is opened by opening the anti-batting line 26. Should be used.

However, if the above conditions are mixed, it is very inconvenient to change the adjustment means 30 from time to time. This inconvenience is lowered the utilization of the anti-spin function, which is a factor that eventually weakens the durability, it is preferable to implement so that it can be immediately adjusted in the driver's seat by the transmission means 40 using the solenoid (45). The solenoid 45 is installed via the adapter 43 on the upper branch flow path 31 of the anti-ballout line 26. The adapter 43 allows the rod 46 of the solenoid 45 to operate while keeping the airtight while securing the installation space of the solenoid 45.

At this time, the transmission means 40 can maintain the interruption state of the upper branch flow path 31 by the energization of the solenoid 45 while the input selection of the switch 48 is maintained or for a set time after the input selection. . When the toggle method is used as the switch 48, the on / off selection is continuously maintained, but it is not preferable to keep the solenoid 45 in the energized state for a long time. When the button method is used as the switch 48, the timer is operated from the moment of pressing to turn off the anti-balling function for a set time. In this case, a separate controller 42 is used or a circuit is configured in an operator panel (not shown) of the driver's seat.

In any case, if you want to temporarily turn off the anti-taking function while working on and using the anti-taking function, the solenoid 45 is energized using the transmission means 40. When the rod 46 blocks the upper branch flow path 31 through the energization of the solenoid 45, the anti-ballout function is turned off. Of course, if the solenoid 45 is damaged or the power is not supplied and the transmission means 40 is turned off, the rod 46 reverses and the upper branch flow path 31 is always open. You can turn on / off prevention function.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

10: cylinder 11: high pressure flow path
12: piston 13: chisel
15: main valve 21: upper high pressure line
22: lower high pressure line 23: return line
25: valve changeover line 26: anti-ballout line
30: control means 31, 32: upper and lower base flow path
35: adjusting screw 36: adjusting groove
37: washer 38: nut
40: power transmission means 42: controller
43: adapter 45: solenoid
46: load 48: switch

Claims (5)

Connecting the upper high pressure line 21, the lower high pressure line 22, the return line 23, the valve switching line 25 on the cylinder 10, and transmits the operating force of the piston 12 to the chisel 13 For the hitting breaker:
An anti-ballast line (26) formed by branching the upper branch channel (31) and the lower branch channel (32) on the high pressure passage (11) of the cylinder (10) communicated with the lower high pressure line (22); And
An adjustment screw 35 installed on the lower flow path 32 of the anti-ballout prevention line 26 to control the upper branch flow path 31 of the anti-ballout prevention line 26 and the upper portion of the anti-ballout prevention line 26. And adjusting means (30) formed on the branch flow passage (31) and made of a transmission means (40) for controlling the upper branch flow passage (31) of the anti-ballout prevention line (26).
The adjusting screw 35 of the adjusting means 30 is formed in a structure in which one end portion having the adjusting groove 36 is exposed at the outer end to be rotatable from the outside to prevent any loosening of the adjusting screw 35 ( 38), and the other end is composed of a blocking portion 35-1 for controlling the upper branch flow path 31 of the anti-ballout prevention line 26 by the rotation operation of the adjustment screw 35,
The transmission means 40 of the adjusting means 30 is a controller for controlling the operation of the rod 46 and the solenoid 45 of the solenoid 45 to control the upper branch flow path 31 of the anti-ballout line 26. (42), the solenoid 45 is the anti-static control mechanism of the hydraulic breaker, characterized in that configured to maintain the open state the upper branch flow path 31 by reversing the rod 46 when the power is not supplied . delete delete delete The method of claim 1,
The transmission means 40 is characterized in that the hydraulic pressure, characterized in that to maintain the shut-off state of the upper branch flow path 31 by the energization of the solenoid 45 while the input selection of the switch 48 is maintained or for a set time after the input selection Breaker anti-throttle adjustment mechanism.

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