WO2016052943A1

WO2016052943A1 - Striking apparatus having boosting device for improving striking efficiency

Info

Publication number: WO2016052943A1
Application number: PCT/KR2015/010181
Authority: WO
Inventors: 서경순
Original assignee: 서경순
Priority date: 2014-09-29
Filing date: 2015-09-25
Publication date: 2016-04-07
Also published as: KR101644473B1; KR20160037521A

Abstract

The present invention provides a striking apparatus having a boosting device for improving striking efficiency, wherein the striking apparatus is capable of increasing the striking amount, has a boosting device capable increasing the efficiency of the striking apparatus, and comprises: a main body having a main gas chamber; a boosting cylinder having a boosting gas chamber and an opening connected to the main body and through which fluid enters and exits; and a boosting piston having an external diameter corresponding to the internal diameter of the boosting cylinder, movably installed in the boosting cylinder, and pushing fluid toward the main body to improve striking efficiency.

Description

Blow device with boosting device to improve blow efficiency

The present invention relates to a striking device, and more particularly, to a striking device having a boosting device that can increase the efficiency of the striking device, such as a breaker.

In general, the striking device is a device for crushing concrete, rock, and the like, hereinafter, a hydraulic breaker which is a kind of striking device will be described as an example.

For example, the hydraulic breaker is filled with a compressed gas such as nitrogen gas injected into the gas chamber formed at the upper end of the piston in the main body. At the bottom of the piston, the head of the chisel is mounted coaxially in contact with the piston. In this state, the pressure state of the fluid supplied is switched by the control valve installed in the valve chamber to raise and lower the piston. At this time, the expansion force of the nitrogen gas in the gas chamber is converted to hammering energy (hammering energy) hitting the head of the chisel through the piston is configured to fracture the hard fractured objects such as rock, concrete, etc. in contact with the tip.

The present invention is to solve various problems, it can provide a striking device having a boosting device for improving the striking efficiency. However, these problems are exemplary, and the scope of the present invention is not limited thereby.

The striking device having a boosting device for improving the blow efficiency according to an embodiment of the present invention includes a boosting cylinder having a main gas chamber, a boosting gas chamber, and a boosting cylinder having an opening through which fluid flows in and out of the boosting cylinder. It has an outer diameter corresponding to the inner diameter, and includes a boosting piston installed to be movable in the boosting cylinder to push the fluid to the body to improve the blow efficiency.

The striking device having a boosting device for improving the striking efficiency may further include a sealing member disposed between the boosting cylinder and the boosting piston and sealing the boosting cylinder and the boosting piston.

The striking device having a boosting device for improving the striking efficiency may further include a cushioning member disposed in the moving direction of the boosting piston.

The striking device having a boosting device for improving the striking efficiency may further include a volume changing member disposed in the boosting gas chamber and varying a volume of the boosting gas chamber.

The volume change member may include a volume change plate that is screwed to the boosting cylinder or the boosting piston to adjust its position to change the volume.

The volume change member may include a volume change damper that is formed to have a volume of various sizes and is disposed in the boosting gas chamber to change the boosting gas chamber.

The boosting cylinder may include a first boosting cylinder and a second boosting cylinder.

The second boosting cylinder may have a smaller volume than the first boosting cylinder.

The second boosting cylinder may be symmetrical with respect to the first boosting cylinder.

The moving distance of the boosting piston may be adjusted by adjusting the gas pressure of the second boosting cylinder.

The striking device having a boosting device for improving the striking efficiency may further include a connection tube connecting the opening and the main body.

According to one embodiment of the present invention made as described above, it is possible to implement a striking device having a boosting device that can increase the amount of impact and increase the efficiency of the striking device. Of course, the scope of the present invention is not limited by these effects.

1 is a front sectional view schematically showing a hydraulic breaker of a general strike device.

Figure 2 is a front sectional view schematically showing a striking device having a boosting device for improving the striking efficiency according to an embodiment of the present invention.

3 and 4 are front cross-sectional views schematically showing a boosting device of the striking device having a boosting device for improving the blow efficiency according to an embodiment of the present invention.

5 and 6 are front cross-sectional views schematically showing a part of the striking device having a boosting device for improving the striking efficiency according to another embodiment of the present invention.

7 and 8 are front cross-sectional views schematically showing a part of the striking device having a boosting device for improving the striking efficiency according to another embodiment of the present invention.

9 is a front sectional view schematically showing a boosting device of the striking device having a boosting device for improving the blow efficiency according to another embodiment of the present invention.

10 is a front sectional view schematically showing a boosting device of the striking device having a boosting device for improving the blow efficiency according to another embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various forms, and the following embodiments are intended to complete the disclosure of the present invention, the scope of the invention to those skilled in the art It is provided to inform you completely. In addition, the components may be exaggerated or reduced in size in the drawings for convenience of description.

Throughout this specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding the other components unless specifically stated otherwise.

2 is a front sectional view schematically showing a striking device having a boosting device 50 to improve the striking efficiency according to an embodiment of the present invention. According to this embodiment, the striking device comprises a main body 10 and a boosting device 50. In the following, the striking device is described by using a hydraulic breaker as an example, but is not limited thereto.

The striking device, for example, the hydraulic breaker comprises a body 10, a main piston 20, a control valve 41 and a boosting device 50.

The main body 10 may include a gas chamber. Compressible gas such as nitrogen gas is injected into the main gas chamber 11 of the main body 10 formed at the upper end of the main piston 20 and filled. At the lower end of the main piston 20, the head of the chisel 30 is coaxially mounted in contact with the main piston 20. In this state, the pressure state of the fluid supplied is switched by the control valve 41 installed in the valve chamber VR to raise and lower the main piston 20. At this time, the expansion force of the nitrogen gas in the main gas chamber 11 is converted into hammering energy striking the head of the chisel 30 through the main piston 20, so that hardness fracture of rock, concrete, etc., which is in contact with the tip thereof. Configured to shred the object.

The boosting device 50 is coupled to one upper end of the body 10. In addition, the fluid may flow between the boosting device 50 and the main body 10. Specifically, the boosting device 50 is disposed on the hydraulic breaker serving as the striking device or the hydraulic supply line 12 constituted in the general hydraulic device.

That is, the boosting apparatus 50, the control valve 41, and the main body 10 are connected in order through a flow path. Due to this configuration, the striking device can control the striking efficiency increased by the boosting device 50 through the control valve 41. Of course, it is not limited to this. Hereinafter, the boosting device 50 will be described in detail with reference to the accompanying drawings. Of course, the present invention is not limited thereto, and the boosting device 50 may be spaced apart from the main body 10 as described below.

3 and 4 are front cross-sectional views schematically showing the boosting device 50 according to the present embodiment. The boosting device 50 according to the present embodiment includes a boosting cylinder 510 and a boosting piston 520 movably installed in the boosting cylinder 510.

The boosting cylinder 510 may be coupled to one side of the main body 10 and may have a boosting gas chamber 511. In detail, the boosting gas chamber 511 may be located inside the boosting cylinder 510 and may be formed by the boosting cylinder 510 and the boosting piston 520. In addition, the boosting cylinder 510 may be connected to the main body 10 and have an opening 512 through which the fluid flows in and out. The boosting cylinder 510 may have a boosting hydraulic chamber 514 connected to the opening 512.

In more detail, the boosting cylinder 510 may form a boosting gas chamber 511 filled with nitrogen gas together with one end surface of the boosting piston 520 which will be described later. In addition, the boosting cylinder 510 may form a boosting hydraulic chamber 514 through which hydraulic oil acting on the main piston 20 flows in and out together with the other end surface of the boosting piston 520.

Therefore, as the boosting piston 520 moves, as the volume of the boosting gas chamber 511 becomes smaller, the volume of the boosting hydraulic chamber 514 may increase. Of course the reverse is also possible.

The boosting cylinder 510 may be formed, for example, in a cylindrical shape with one surface of the boosting cylinder 512. The boosting cylinder 510 may be formed by a cylindrical cover or may be variously modified by a cylindrical cover and a part of the main body 10.

In addition, the boosting cylinder 510 is coupled to a supply valve 580 for supplying gas to the boosting gas chamber 511. The boosting piston 520 has an outer diameter corresponding to the inner diameter of the boosting cylinder 510 and is movably installed in the boosting cylinder 510. For example, the boosting piston 520 may be formed in a cylindrical shape having an outer diameter corresponding to the inner diameter of the boosting cylinder 510. That is, the boosting piston 520 may have a shape corresponding to the internal shape of the boosting cylinder 510.

Accordingly, the boosting piston 520 is provided to be movable in the boosting cylinder 510 while the outer diameter thereof is in contact with the inner diameter of the boosting cylinder 510, and the opening 512 of the boosting cylinder 510 is an entrance through which hydraulic oil enters and exits. It is in communication with the control valve 41 as a. And boosting piston 520 can improve the blow efficiency by pushing the fluid to the body.

Hereinafter, the shape of the boosting piston 520 will be described in more detail.

The boosting piston 520 includes a release prevention jaw 521 formed to protrude at an end portion. For example, the release prevention jaw 521 protrudes substantially perpendicular to the moving direction of the boosting piston 520. In addition, the boosting cylinder 510 includes a protrusion 513 that protrudes inwardly so as to take the removal prevention jaw.

Therefore, the boosting piston 520 moving in the boosting cylinder 510 may prevent the departure prevention jaw 521 from the boosting cylinder 510 by being caught by the protrusion 513. The protrusion 513 and the separation prevention jaw 521 may be formed in one ring shape on the inner surface of the boosting cylinder 510 and the outer surface of the boosting piston 520, but may be formed to be spaced apart at regular intervals. have.

Meanwhile, the boosting piston 520 as described above may be formed in a cylindrical shape as shown in FIGS. 3 and 4. Of course, but not limited to, the boosting piston 520 is It is possible to maximize the volume of the gas chamber to the inside of the boosting piston 520 by forming a groove so that nitrogen gas can fully function at one end surface facing the gas chamber.

Accordingly, when the hydraulic pressure is supplied to the main body 10 of the hydraulic breaker and the main piston 20 is lowered, as shown in FIG. 3, the release stop 521 of the boosting piston 520 is expanded while the gas chamber into which nitrogen gas is introduced is expanded. The boosting piston 520 is quickly pushed to the opening 512 side of the boosting cylinder 510 until it is caught by the protrusion 513 of the boosting cylinder 510, and all hydraulic fluid filled in the boosting hydraulic chamber 514 is hydraulically applied. By supplying the breaker body 10 quickly, it is possible to maximize the descending speed of the

main piston

20, 30 to improve the blow efficiency.

When the main piston 20 rises after the impact, as shown in FIG. 4, a part of the hydraulic oil supplied to the main body 10 of the hydraulic breaker passes through the control valve 41 to the opening 512 of the boosting cylinder 510. As it is introduced into the boosting piston 520 is inserted into the boosting cylinder 510, the boosting gas chamber 511 is compressed by the boosting piston 520 is inserted to reduce the impact force and vibration.

In particular, the boosting device 50 according to the present embodiment operated as described above may transfer the expansion pressure of the boosting gas chamber 511 to the boosting hydraulic chamber 514 as it is through the boosting piston 520, and the boosting hydraulic chamber ( Since the pressure of the 514 can be transmitted to the boosting gas chamber 511 as it is, the fluid flows in and out quickly, so that the response speed of the boosting device 50 is improved. 20) can increase the blow energy.

Meanwhile, the sealing member 530 is disposed between the boosting cylinder 510 and the boosting piston 520. The sealing member 530 may seal the boosting cylinder 510 and the boosting piston 520 to prevent mixing of the nitrogen gas and the hydraulic oil introduced into the boosting gas chamber 511 and the boosting hydraulic chamber 514, respectively.

Sealing member 530 is coupled to the outer surface of the boosting piston 520, or is coupled to the boosting cylinder 510 as shown. Of course, the sealing member 510 may be coupled to the boosting cylinder 510 and the boosting piston 520, respectively. The sealing member 530 may be provided in various ways such as sealing or O-ring, packing.

Meanwhile, the boosting device 50 may further include a buffer member 540 provided in the moving direction of the boosting piston 520. As the boosting piston 520 moves, the inner wall or the main body 10 of the boosting cylinder 510 may generate noise or break. To prevent this, the shock absorbing member 540 is disposed between the boosting cylinder 510 and the boosting piston 520 or between the main body 10 and the boosting piston 520, or the boosting cylinder 510 and the boosting piston 520. ) And between the body 10 and the boosting piston 520.

For example, the shock absorbing member 540 may be coupled to the boosting piston 520, and specifically, may be coupled to both end surfaces provided in the moving direction of the boosting piston 520. The buffer member 540 is made of various materials such as Teflon coating, rubber.

5 to 8 are front cross-sectional views schematically showing a boosting piston 520 of the striking device having a boosting device 50 to improve the blow efficiency according to another embodiment of the present invention. Since the striking device according to the present embodiment is the same as or similar to the striking device according to the above-described embodiment, redundant description thereof will be omitted.

The striking device having a boosting device 50 for improving the striking efficiency according to the present embodiment includes a volume changing member provided in the gas space to vary the volume of the gas space.

5 and 6, the volume change member includes a volume change plate 551 that is screwed to the boosting cylinder 510 or the boosting piston 520 to adjust its position to change the volume.

The volume change plate 551 is formed of two plates, and the upper and lower plates are provided to be in surface contact with each other to act as a normal lock nut, thereby preventing arbitrary loosening of the volume change plate 551. It is possible to firmly withstand a large gas pressure acting on the boosting gas chamber 511.

Such a plurality of volume change plate 551 may be separately screwed into the interior of the boosting piston 520 as shown in Figure 5, or as shown in Figure 6 a plurality of volume change plate 551 is boosted The volume of the boosting gas chamber 511 may be changed by being screwed to form the bottom surface of the piston 520 and adjusting its position.

Alternatively, the volume change member may include a volume change damper 552 provided to have various sizes of volumes as shown in FIG. 7 and provided in the boosting gas chamber 511 to vary the boosting gas chamber 511. . For example, the volume change damper 552 may be inserted into and coupled to the boosting piston 520, and may be formed in a plurality of volumes having various sizes.

The volume change damper 552 may be coupled to be fixed as a structure or a stepped structure of the protrusion and the groove to the inner lower end of the boosting piston 520 as shown in Figure 7, or as shown in Figure 8 boosting piston 520 It can also be fixed by inserting (pressing in) the inside.

The volume changing member according to the above-described embodiments may adjust the blow efficiency of the boosting piston 520 by changing the volume of the boosting gas chamber 511.

9 is a front sectional view schematically showing a part of the striking device having a boosting device 50 for improving the striking efficiency according to another embodiment of the present invention. Since the striking device according to the present embodiment is the same as or similar to the striking device according to the above-described embodiment, redundant description thereof will be omitted.

The striking device according to the present embodiment includes at least two boosting cylinders 510. As such, the boosting cylinder 510 may be formed in plural, and even if the sealing member 530 of the boosting cylinder 510 is damaged, the impact efficiency may be improved by the other boosting cylinder 510.

Alternatively, the moving distance of the boosting piston 520 may be adjusted by adjusting the gas pressure of any one boosting cylinder 510. For this reason, the striking efficiency can be changed easily.

Hereinafter, the first boosting cylinder 560 and the second boosting cylinder 570 will be described, but the number of boosting cylinders 510 is not limited thereto. The first boosting cylinder 560 includes a first boosting gas chamber 561, and the second boosting cylinder 570 includes a second boosting gas chamber 571.

In this case, the boosting piston 520 may be coupled to the first boosting cylinder 560 and the second boosting cylinder 570, respectively.

Meanwhile, the second boosting cylinder 570 may have a smaller volume than the second boosting cylinder 570. Thus, the blow efficiency can be precisely changed by adjusting the gas pressure of the second boosting cylinder 570 having a relatively small volume.

Referring to the arrangement of the boosting cylinder 510, the second boosting cylinder 570 is symmetric with respect to the first boosting cylinder 560. For example, the second boosting cylinder 570 may surround the first boosting cylinder 560 disposed in the center in a ring shape. As another example, the second boosting cylinder 570 may be formed in plural, and may be disposed at an equal angle with respect to the first boosting cylinder 560 in the center. As a result, the boosting piston 520 may be uniformly pressured or distributed, thereby minimizing noise and vibration.

On the other hand, Figure 10 is a front sectional view schematically showing a striking device having a boosting device 50 to improve the striking efficiency according to another embodiment of the present invention. The striking device having a boosting device 50 according to the embodiment described above is the same as or similar to the striking device having a boosting device 50 according to the above-described embodiment. Therefore, redundant description is omitted.

The boosting device 50 is not provided in the main body 10, but is provided separately. For example, unlike shown, the connection tube 99 for connecting the boosting device 50 and the main body is provided. Specifically, the connection tube 99 may connect the opening 512 of the boosting cylinder 510 and the hydraulic supply line 12 of the main body 10.

Therefore, since the boosting device 50 is not installed in the main body 10, the weight of the main body 10 can be reduced, thereby facilitating the hitting operation.

Although the present invention has been described in detail through specific examples, this is for explaining the present invention in detail, and the present invention is not limited thereto, and a person having ordinary skill in the art within the technical idea of the present invention. It is obvious that modifications and improvements are possible.

Accordingly, the simple modifications and variations of the present invention are all within the scope of the present invention, and the specific scope of protection of the present invention will be clarified by the appended claims.

Claims

Main body having a main gas chamber,

A boosting cylinder having a boosting gas chamber, the boosting cylinder being connected to the main body and having an opening through which fluid flows in and out;

Boosting piston having an outer diameter corresponding to the inner diameter of the boosting cylinder and installed to be movable in the boosting cylinder to push the fluid to the body to improve the blow efficiency

Strike device having a boosting device to improve the blow efficiency comprising a.
In claim 1,

And a boosting device disposed between the boosting cylinder and the boosting piston and further including a sealing member for sealing the boosting cylinder and the boosting piston.
In claim 1,

The striking device having a boosting device to improve the blow efficiency further comprising a cushioning member disposed in the direction of movement of the boosting piston.
In claim 1,

And a boosting device disposed in the boosting gas chamber and further including a volume changing member for varying a volume of the boosting gas chamber.
In claim 4,

The volume change member has a boosting device having a boosting device to improve the blow efficiency including a volume change plate that is screwed to the boosting cylinder or the boosting piston to adjust its position to change the volume.
In claim 4,

The volume changing member has a boosting device having a boosting device formed to have a volume of various sizes and disposed in the boosting gas chamber to include a volume change damper for varying the boosting gas chamber.
In claim 1,

The boosting cylinder has a boosting device having a boosting device to improve the blow efficiency comprising a first boosting cylinder and a second boosting cylinder.
In claim 7,

The second boosting cylinder has a boosting device having a boosting device for improving the blow efficiency of a smaller volume than the first boosting cylinder.
In claim 7,

The second boosting cylinder has a boosting device having a boosting device for improving the impact efficiency symmetrical with respect to the first boosting cylinder.
In claim 7,

The striking device having a boosting device to improve the blow efficiency of adjusting the moving distance of the boosting piston by adjusting the gas pressure of the second boosting cylinder.
In claim 1,

The striking device having a boosting device to improve the blow efficiency further comprises a connecting tube for connecting the opening and the main body.