KR102150018B1 - Hydraulic breaker internal accumulator - Google Patents

Abstract

According to a purpose of the present invention, as the present invention is constituted to integrate a first hydraulic chamber with one side of a cylinder while maintaining the original function of an accumulator formed on one side of the cylinder, the present invention can enhance product competitiveness by solving the frequent replacement of a packing formed between a cylinder and an accumulator, which are conventionally formed to be separated, the complicatedness of work caused by the same and a leakage of oil or hydraulic oil caused by a deteriorated packing. To achieve the purpose, the present invention includes: a first hydraulic chamber (1100) formed on one side of a cylinder (20) by a predetermined depth, and including a first placement groove (1110) of a predetermined depth in the center, and a plurality of flow path holes (1130) formed in the first placement groove to lead high-pressure oil in the cylinder (20) to flow in and out; a cover (1200) fixed to the cylinder (20) to seal the first hydraulic chamber (1100), and including a second hydraulic chamber (1210) of a predetermined depth therein; a diaphragm (1300) formed between the first hydraulic chamber (1100) and the cover (1200) to perform a pressure rise and compensation action on the high-pressure oil flowing into and out of the cylinder (20); a poppet valve (1400) placed in the first placement groove (1110) of the first hydraulic chamber (1100) to lead the high-pressure oil flowing in and out between the cylinder (20) and the first hydraulic chamber (1100) such that the inflow and outflow can be smooth and even; and a plurality of fastening bolts (1600) providing a fixing force to the cover (1200) such that the cover (1200) can be firmly fixed to the cylinder (20).

Description

Built-in accumulator of hydraulic breaker {HYDRAULIC BREAKER INTERNAL ACCUMULATOR}

The present invention relates to a built-in accumulator of a hydraulic breaker, and more particularly, by configuring a first hydraulic chamber to be integrated in a built-in type on one side of the cylinder while maintaining the original function of the accumulator configured on one side of the cylinder, It relates to a built-in accumulator of a hydraulic breaker that reinforces product competitiveness by eliminating the problem of frequent replacement of the packing configured between the configured accumulator and the cylinder, and the trouble of work and leakage of oil or hydraulic oil caused by obsolete packing.

In general, hydraulic breakers are widely used for crushing concrete or rock by mounting on construction equipment such as an excavator or loader, and the chisel, which is a crushing tool, is applied to the concrete by striking the piston by the hydraulic force of the cylinder. Or it crushes the rock.

This hydraulic breaker constitutes a cylinder and a piston operated by hydraulic pressure, and a rod used when crushing an object is attached to the front of the cylinder.

In addition, when the piston reciprocates with the hydraulic force of the cylinder, the rod is hit, and a strong impact is applied to the object to crush the object.

In addition, a gas chamber is provided at the rear end of the hydraulic cylinder, a valve device is provided on one side of the surface of the hydraulic cylinder to control the supply of fluid required for the operation of the piston, and the hydraulic oil is temporarily stored on the surface of the hydraulic cylinder adjacent to the fluid control unit. Thus, an accumulator for use as a kinetic energy source is formed.

Looking at the structure and operating state of the conventional hydraulic breaker, the hydraulic breaker device of Korean Patent No. 10-1621218, referring to FIGS. 1A to 1D, is a chisel 10 that is moved up and down to apply a blow to the crushed object, A piston 50 disposed on the top of the chisel 10 and operating up and down by hydraulic pressure, an inlet 210 for supplying hydraulic pressure, and an outlet 220 for discharging hydraulic pressure are connected, and the cylinder bottom ( 22), a cylinder 20 in which a cylinder conversion chamber 24, a cylinder low pressure chamber 26, and a cylinder loss 28 are provided, and provided outside the cylinder 20, the cylinder basement 22, the cylinder conversion chamber (24), the cylinder low pressure chamber 26, the valve lower pressure chamber, the valve lower pressure chamber, the valve pressure chamber, the valve housing having the valve loss, respectively, corresponding to the cylinder low pressure chamber 26 and the cylinder loss 28, and are arranged inside the valve housing. Includes a valve that moves up and down according to the oil pressure transmitted from the outside of the valve housing and a guide member that is coupled so as to fit inside the valve to guide the lifting operation of the valve and has an inflow and outflow path of oil delivered through the valve housing. The valve device 100 is configured.

In addition, a head cap 30 having a gas chamber 32 for imparting a downward downward force of the piston 50 is configured at the upper portion of the cylinder 20, and the chisel 10 is formed at the lower portion of the cylinder 20. The front head 40 is configured to guide the reciprocating movement.

In addition, an accumulator 300 that compensates and fills hydraulic pressure is configured below the valve device 100.

In the hydraulic breaker device configured as described above, the head cap 30 having the gas chamber 32 is disposed at the upper side of the cylinder 20, and the front head 40 guides the movement of the chisel 10 at the lower side of the cylinder 20. After assembling so that) is disposed, the valve and piston 50 are lifted and lowered by supplying hydraulic pressure to the inside of the cylinder 20 and the valve housing provided on the outside of the cylinder 20. As such, the piston 50 is divided into an ascending stroke, a top dead center, a descending stroke, and a blow, while the hitting force is applied by the chisel 10.

Looking more, as shown in Fig. 1a, the ascending stroke of the piston 50 is through the inlet 210, the external pneumatic oil is introduced into the valve chamber configured in the valve device 100 through the inlet hole, the valve low pressure through the inlet hole. In addition to being introduced into the chamber, the valve is lowered and the piston 50 is raised as it is supplied to the lower part of the cylinder.

As shown in FIG. 1B, the top dead center operation of the piston 50 increases the valve by flowing high pressure oil from the cylinder switching chamber 24 into the switching chamber through the switching hole of the valve device 100 as the piston 50 rises in the ascending stroke. Will be ordered.

Accordingly, the upper end of the piston 50 is introduced into the gas chamber 32 of the head cap 30 to reach the top dead center position.

As shown in FIG. 1C, the descending stroke of the piston 50 opens the first through hole as it is raised in the valve housing of the valve, and the high-pressure oil supplied through the inlet hole is opened through the inside of the guide member. The second through hole of the guide member is opened to communicate with the flow path hole when the valve is raised, so that the high pressure oil supplied through the inlet hole is supplied to the inside of the guide member. Pipeline resistance occurs while the inlet hole passes through the portion communicating with the second through hole in the process of being supplied to the inlet hole, but the pipeline resistance is offset by the high-pressure oil flowing through the first through hole communicating with the inlet hole.

Accordingly, the piston moves downward by the hydraulic pressure of the high-pressure oil supplied to the cylinder loss and the gas pressure in the gas chamber 32.

As shown in Figure 1d, the piston strikes the lower end of the chisel 10 as the high pressure supplied through the connection hole acts on the cylinder loss as the piston 50 moves downward. In addition, the flow path between the cylinder conversion chamber 24 and the cylinder low pressure chamber 26 is blocked, and a larger hydraulic pressure is applied to the small-diameter side by the hydraulic pressure acting on the valve pressure chamber through the inlet hole, causing the valve to descend. do.

In the process of performing the striking stroke from the ascending stroke of the piston, the accumulator 300 performs the inflow and filling process of high-pressure oil, so that the striking force of the piston 50 is amplified.

Looking at the configuration of the conventional accumulator 300, as shown in Figures 2 to 4, it is configured on one side of the cylinder 20, the body 310, the cover 320, the poppet valve 330 and , A diaphragm 340, an injection valve 350, a fastening part 360, and a packing 370.

The cylinder 20 has a seat groove 25 having a predetermined depth into which a part of the body 310 of the accumulator 300 is inserted.

In addition, a poppet valve 330 is positioned in the seat groove 25, and a first distribution hole 27 is formed to form a flow path so that high-pressure oil enters and enters the lower cylinder 22 of the cylinder 20.

The body 310 of the accumulator 300 has a first hydraulic chamber 312 formed at one end to a predetermined depth, and a first seating groove 314 formed at a center to a predetermined depth to seat the poppet valve 330. Is formed.

In addition, the body 310 has a second seating groove 316 formed at one end to a predetermined depth to support the seating of the diaphragm 340 into the first hydraulic chamber 312.

In addition, a seating protrusion 313 inserted into the distribution hole 27 is formed at one end of the body 310.

In addition, in the center of the body 310, one end of the poppet valve 330 seated in the first seating groove 314 is inserted, and a first coupling hole 318 for maintaining a fixed state by a coupling relationship is provided. It is formed to penetrate.

In addition, the body 310 is formed around the first coupling hole 318, at least one second distribution hole 319 is formed through the first distribution hole 27 to allow high-pressure oil to enter and exit. do.

The cover 320 includes a second hydraulic chamber 322 formed at one end to a predetermined depth, a third seating groove 324 formed at a center of the other end, and a second seating groove 324 It is composed of an injection port 326 formed to communicate with the hydraulic chamber 322.

In this case, as the first hydraulic chamber 312 of the body 310 and the second hydraulic chamber 322 of the cover 320 form a complete hydraulic chamber by engaging the body 310 and the cover 320 By allowing the diaphragm 340 to function smoothly, it is formed in the same or similar shape as the diaphragm 340.

The poppet valve 330 is configured in the body 310 and functions to act on the diaphragm 340 in a state in which the high-pressure oil is evenly distributed when high-pressure oil enters the flow path formed in the cylinder 20.

The poppet valve 330 includes a housing 332, a split ring 334, a fixing ring bolt 336, a fastening nut 338, and a position fixing pin 339.

The housing 332 has a receiving groove of a predetermined depth so that the split ring 334 is seated on the inside, and a through hole 333 is formed at the lower end of the housing 332 to allow the high-pressure oil to enter and exit.

The split ring 334 has a seating groove of a predetermined depth so that one end of the fixing ring bolt 336 is seated inside.

In addition, when the split ring 334 is seated in the mounting groove of the housing 332, the inner side of the housing 332 and the outer side of the split ring 334 are configured to form a space spaced at regular intervals, The high pressure oil entering and entering through the through hole 333 of the housing 332 is allowed to enter and exit in a dispersed state through the floating space.

The fixing ring bolt 336 is in a state where one end is seated in the seating groove of the split ring 334, and the other end is inserted into the first coupling hole 318 of the body 310 and then by the fastening nut 338 The poppet valve 330 is fixed to the body 310.

In addition, when the fixing ring bolt 336 is seated in the mounting groove of the split ring 334, the inside of the split ring 334 and the outside of the fixing ring bolt 336 form a space to be spaced apart at a predetermined interval. It is configured so that the high-pressure oil entering and entering through the through hole 333 of the housing 332 is distributed through the floating space.

That is, as the housing 332, the split ring 334, and the fixed ring bolt 336 each have a space spaced at a predetermined interval, the high pressure oil entering and entering through the through hole 333 of the housing 332 is dispersed. By allowing the entry and exit to be made in the state, the diaphragm 340 is damaged due to the pressure of the high-pressure oil.

The fastening nut 338 is fastened to one end of the fixing ring bolt 336 and supports the poppet valve 330 to maintain a fixed state to the body 310.

The position fixing pin 339 supports the housing 332, the split ring 334, and the fixed ring bolt 336 so that the mutually coupled position is fixed.

As the diaphragm 340 is seated in the second seating groove 316 of the body 310 and the other end of the diaphragm 340 is supported by the cover 320 engaged with the body 310, the body 310 It performs a function to induce pressure increase for the high-pressure oil entering and entering the first hydraulic chamber 312 of the.

The injection valve 350 is seated and fixed in the third seating groove 324 of the cover 320, and nitrogen gas is filled between the second hydraulic chamber 322 and the diaphragm 340 of the cover 320 It performs the function that makes it possible.

The fastening part 360 performs a function of exerting a fastening force so that the body 310 and the cover 320 are firmly fixed to the seat groove 25 of the cylinder 20. For example, the fastening part 360 is a bolt.

The packing 370 is configured in the seating protrusion 313 of the body 310 and performs a function of maintaining airtightness between the cylinder 20 and the body 310.

The conventional accumulator 300 configured as described above corresponds to one of the important elements in a hydraulic breaker that doubles the hitting force of the chisel as the pressure is doubled to the high pressure oil entering and entering through the cylinder 20.

However, in the conventional accumulator, due to the binary configuration relationship in which the body is fastened to one side of the cylinder, a gap is generated between the cylinder and the body due to processing errors, assembly failure, or strong vibration generated during use. There is a problem in that the original function of the accumulator is lost due to the loss of high pressure oil through the gap.

In addition, in order to maintain the airtightness and airtightness between the cylinder and the body that are divided into two, it acts as a factor that increases the number of parts that must be used for packing and thus increases the manufacturing cost.

In addition, since the packing is in contact with high-pressure oil, it must be replaced at regular intervals of 6 months by a chemical reaction. To replace the packing, the housing cover configured to surround the cylinder is removed, and then the body is separated from the cylinder. There is a problem with the complexity and complication of replacement that the packing can only be replaced.

In addition, as shown in FIG. 5A, when assembling the packing so as to be configured between the cylinder and the body, the packing is separated between the cylinder and the body due to poor assembly or the pressure of the high-pressure oil entering and entering, thereby losing airtightness. As high-pressure oil, that is, oil leakage occurs due to loss of airtightness, there is a problem that the surroundings are contaminated by oil leakage, and the pressure of the high-pressure oil is lost due to oil leakage, thereby losing the hitting force of the chisel.

In addition, the poppet valve used in the conventional accumulator has a complex structure and is composed of a large number of parts, such as a housing, a split ring, a fixing ring bolt, a fastening nut, and a position fixing pin, thereby increasing the manufacturing cost and assembling. There is a problem that this is difficult.

In addition, the conventional accumulator is configured such that the body and the cover are fixed to one side of the cylinder by a fastening part, and the body and the cover on one side of the cylinder remain elevated by a fixed height, As the area of the housing cover configured to surround the cylinder is increased by the amount, the material of the housing cover is added by the amount corresponding to the increase, thereby increasing the manufacturing cost.

In addition, in the conventional accumulator, as shown in FIG. 5B, in a state in which the body is fixed to the cylinder with fastening bolts, vibrations generated during operation are transmitted from the cylinder to the body, and cracks in the body are caused by such vibrations. ) Is generated, and there is a problem of lowering the strength of the body by such cracks.

Taken together, the conventional accumulator has a problem that the manufacturing cost is increased due to the large number of parts.

In addition, since the number of parts is large, there is a problem in that the defect rate is increased due to processing errors and difficulty in assembly.

In addition, the cylinder and the body are dualized, and the packing or the body is damaged due to poor assembly or vibration generated during use, and as a result of leakage of high-pressure oil, the surrounding contamination and impact force are lost, resulting in loss of the original function of the accumulator. There is a problem.

In addition, as the body and the cover are fastened to the cylinder, the height of the cylinder is increased by the body and the cover, and the area of the housing cover configured to surround the outside of the cylinder is increased by the increased height, thereby increasing the material In addition, there is a problem of increasing the manufacturing cost of the housing cover (h).

Korean Patent Special No. 1996-6735 (published on May 23, 1996) Korean Patent No. 10-675586 (announced on January 30, 2007) Korean Patent No. 10-1621218 (announced on May 16, 2016)

As proposed in order to solve the above problems, the object of the present invention is to maintain the original function of the accumulator configured on one side of the cylinder, and by configuring the first hydraulic chamber to be integrated in a built-in type on one side of the cylinder. Its purpose is to reinforce product competitiveness by resolving the problem of frequent replacement of packings formed between accumulators and cylinders, complications of work, and leakage of oil or hydraulic oil caused by aging packings.

The present invention for achieving the above object includes a chisel and a cylinder, a head cap, a front head, a piston, and a valve device to crush concrete or rock by being mounted on construction equipment such as an excavator or a loader. , In the accumulator for a hydraulic breaker configured on one side of the cylinder to perform a pressure increase and correction action, the first seating groove formed on one side of the cylinder and having a predetermined depth in the center, and the first seating groove A first hydraulic chamber including a plurality of flow path holes formed in the cylinder to guide the high-pressure oil into and out of the cylinder; A cover fixed to the cylinder to seal the first hydraulic chamber and including a second hydraulic chamber having a predetermined depth inside; A diaphragm configured between the first hydraulic chamber and the cover to perform a pressure increase and correction action on the high pressure oil entering and entering from the cylinder; A poppet valve that is seated in the first seating groove of the first hydraulic chamber and guides the high-pressure oil flowing in and out between the first hydraulic chamber and the cylinder to smoothly and uniformly enter and exit; And a plurality of fastening bolts providing a fixing force to the cover so that the cover is firmly fixed to the cylinder.

In the present invention, the accumulator for a hydraulic breaker provides a fixing force to the poppet valve seated in the first seating groove of the first hydraulic chamber, and supports the poppet valve to maintain a firmly fixed state in the first hydraulic chamber. It is preferable to include a fixing bolt;

In the present invention, the poppet valve includes a body; It includes a shading portion configured to have a predetermined width on the upper end of the body; The height of the poppet valve is preferably formed to have a height equal to or lower than the height of the first seating groove of the first hydraulic chamber to prevent damage to the diaphragm by preventing interference with the diaphragm acting as the pressure raising and lowering.

In the present invention, the body is configured at the same or similar position as the flow path hole of the first hydraulic chamber, and guides the high pressure oil entering the cylinder through the flow path hole to enter the first hydraulic chamber with an equal force. It is preferable to include; wired induction groove.

In the present invention, the shading portion includes a streamline drainage surface formed downward at a predetermined angle to induce a smooth advance action without dispersing the advance force when the diaphragm advances from the first hydraulic chamber to the cylinder. It is desirable to do.

According to the present invention, by integrating the first hydraulic chamber on one side of the cylinder as a built-in type, frequent replacement of the packing configured between the conventional accumulator and the cylinder configured as a dualized separate type, and the complexity of work and obsolete packing accordingly It has the effect of reinforcing product competitiveness by solving the problem of oil leakage caused by.

In addition, by providing a built-in accumulator consisting of a first hydraulic chamber and a diaphragm, a cover, a poppet valve, and a fastening bolt configured on one side of the cylinder, the number of parts is minimized, thereby reducing the manufacturing cost, reducing assembly time and simplifying assembly. Has the effect.

In addition, in the state where the packing is mounted between the conventional binary cylinder and the accumulator, the efficiency of the pressure increasing action by the accumulator inevitably deteriorated, since it is impossible to maintain perfect airtightness. By configuring the built-in accumulator according to the integration of the cylinder, there is an effect of improving the efficiency of the pressure enhancing action of the accumulator by fundamentally preventing oil leakage and the like between the cylinder and the first hydraulic chamber and perfect airtightness.

Figures 1a to 1d is a state of use showing a state of operation of the ascending stroke, top dead center, descending stroke and striking of a piston configured in a hydraulic breaker device showing an example of the prior art.
2 is an exploded perspective view of an accumulator configured in a conventional hydraulic breaker.
3 is a composite cross-sectional view of a conventional hydraulic breaker.
4 is an exploded cross-sectional view of an accumulator configured in a conventional hydraulic breaker.
5 is an actual picture of damage in the conventional accumulator,
5a is a picture where the packing is removed, and 5b is a picture of a crack in the body.
6 is an exploded perspective view of an accumulator configured in a hydraulic breaker according to the present invention.
7 is a composite cross-sectional view of a hydraulic breaker according to the present invention.
8 is an exploded cross-sectional view of the accumulator configured in the hydraulic breaker according to the present invention.
Figure 9 is an enlarged cross-sectional view of a poppet valve configured in the accumulator according to the present invention.
10 is a rear perspective view of a poppet valve according to the present invention.
11 is an enlarged cross-sectional view of a poppet valve according to the present invention,
11a is a state in which high-pressure oil is entered, and 11b is a state in which high-pressure oil is advanced.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings as follows (the same reference numerals are used for the same configuration as in the prior art, and detailed description thereof will be omitted).

The breaker of the present invention, as shown in Figures 6 to 11, the chisel 10, the cylinder 20, the head cap 30, the front head 40, the piston 50, A valve device 100 and an accumulator 1000 are included.

Here, the chisel 10, cylinder 20, head cap 30, front head 40, piston 50, and valve device 100 are detailed as they perform the same or similar structure and function as in the prior art. Even if the description is omitted, it is enough to be recognized by those skilled in the art.

The accumulator 1000 maintains its original function and minimizes the number of parts, thereby reducing the processing time and lowering the manufacturing cost, as well as improving the efficiency of use by enabling efficient management due to convenience of assembly and easy maintenance. To strengthen product competitiveness.

In addition, since the accumulator 1000 forms a first hydraulic chamber on one side of the cylinder, the conventional body becomes unnecessary, so that the housing cover h is configured to surround the cylinder 20 as shown in FIG. 7. The height difference occurs as much as the area occupied by the conventional body, and this difference in height saves material as much as the area difference (S, hatched part) of the housing cover (h), which reduces the manufacturing cost. You can get the effect.

The accumulator 1000 includes a first hydraulic chamber 1100 formed at a predetermined depth on one side of the cylinder 20 and a cover 1200 fixed to seal the first hydraulic chamber 1100 of the cylinder 20 Wow, a diaphragm 1300 mounted between the first hydraulic chamber 1100 and the cover 1200, a poppet valve 1400 configured in the first hydraulic chamber 1100, a fixing bolt 1500, and fastening Includes a bolt 1600.

The first hydraulic chamber 1100 is formed at a predetermined depth on one side of the cylinder 20 to form a space so that a pressure increasing action is smoothly performed through the diaphragm 1300.

In this case, the first hydraulic chamber 1100 performs the same function as the first hydraulic chamber formed in the body of a conventional accumulator, and in the related art, as the body is configured separately from the cylinder, leakage of high pressure oil occurs and the cylinder There was a problem such as cumbersomeness of periodically replacing the packing between the and the body.

On the contrary, the present invention is integrated to form the first hydraulic chamber 1100 directly on one side of the cylinder, thereby solving problems such as high pressure oil leakage due to conventional dualization or troublesome maintenance requiring periodic replacement of packings. A definite improvement effect was obtained that fundamentally solves it.

In addition, as shown in Figs. 6 and 8, the first hydraulic chamber 1100 is formed to a predetermined depth, that is, at a predetermined depth in the cylinder 20 in which the first hydraulic chamber 1100 is formed, and the poppet valve 1400 A first seating groove 1110 is formed to allow the) to be seated.

In addition, a fastening hole 1120 having a predetermined depth is formed in the first hydraulic chamber 1100 to maintain a state in which the poppet valve 1400 seated in the first seating groove 1110 is fixed to the cylinder 20. .

In addition, at least one flow path hole 1130 is formed in the first hydraulic chamber 1100 to allow a pressure increase action to be performed as the high pressure oil enters and enters between the cylinder 20 and the first hydraulic chamber 1100. .

In this case, it is preferable that 3 to 4 of the flow path holes 1130 are formed in equal divisions. The flow path hole 1130 is preferably formed around the fastening hole 1120.

An outer periphery of the first hydraulic chamber 1100 includes a first seating groove 1140 formed to a predetermined depth so that an outer periphery of the diaphragm 1300 is seated.

The cover 1200 is fastened and fixed to one side of the cylinder 20 so that the inside of the first hydraulic chamber 1100 is sealed.

As shown in FIGS. 6 and 8, the cover 1200 includes a second hydraulic chamber 1210 formed to a predetermined depth so that the pressure increasing action of the diaphragm 1300 is smoothly performed.

In this case, the first and second hydraulic chambers 1100 and 1210 are formed to face each other.

In addition, the cover 1200 is configured with a plurality of insertion holes 1220 through which the fastening bolts 1600 are inserted and the cover 1200 is firmly fixed to the cylinder 20 by the fastening bolts 1600. .

In addition, a coupling hole is formed in the cover 1200 so that the injection valve 350 configured in a conventional accumulator is configured.

The diaphragm 1300 is configured between the first and second hydraulic chambers 1100 and 1210, and has a function of increasing and compensating the pressure for the high-pressure oil entering and entering the first hydraulic chamber 1100. Perform. In this case, the diaphragm 1300 is a technical idea that can be easily recognized by a person skilled in the art even if a detailed description is omitted as the diaphragm 1300 performs the same or similar structure and operation relationship as in the related art.

The poppet valve 1400 is mounted in the first hydraulic chamber 1100 so that the high-pressure oil flowing through the cylinder 20 is uniformly dispersed, and the diaphragm configured in the first hydraulic chamber 1100 In (1300), it performs a function of smoothly increasing pressure.

As shown in FIG. 10, the poppet valve 1400 includes a body 1410 formed at a predetermined height, and a shading portion 1420 formed at an upper end of the body 1410 with a predetermined width.

In addition, the poppet valve 1400 includes a second fastening hole 1430 which is formed to pass through and maintains a state fixed to the cylinder 20 by the fixing bolt 1500.

In addition, the height of the poppet valve 1400 is formed to be the same as or slightly lower than the height of the first seating groove 1110, so that the diaphragm performs a pressure lifting action between the first and second hydraulic chambers 1100 and 1210. It is preferable that it is formed so as not to interfere with the action of (1300).

In addition, a streamline guide groove 1412 is formed in the body 1410 to guide the high-pressure oil entering through the flow path hole 1130 to be uniformly distributed to the first hydraulic chamber 1100.

The streamline guide groove 1412 is configured at the same or similar position as the flow path hole 1130 configured in the first hydraulic chamber 1100.

In addition, the streamline guide groove 1412 is composed of a plurality, it is preferable to be formed in a radial shape by equal division.

In addition, as shown in FIG. 11A, the streamline guide groove 1412 is formed in a semicircular streamline so that high-pressure oil, that is, a fluid that moves upward from the lower end of the body 1410, can smoothly move.

The awning part 1420 is configured on the upper end of the body 1410, and when it enters the cylinder 20 from the first hydraulic chamber 1100 by the action of the diaphragm 1300, the high pressure oil, that is, the drainage of the fluid is A streamlined drain surface 1422 is formed to induce it to be made without great resistance.

The streamlined drain surface 1422 is formed on the top surface of the shade portion 1420 to minimize interference by the shade portion 1420 when fluid enters the cylinder 20 by the action of the diaphragm 1300 It performs the function of inducing the pressure of high-pressure oil not to be lost.

As shown in FIG. 11A, the streamlined drain surface 1422 is preferably formed in a taper downward at an angle (a) of 5° to 10° with respect to the horizontal plane of the shade portion 1420.

The fixing bolt 1500 is inserted into the second fastening hole 1430 of the poppet valve 1400, and a fastening hole 1120 formed in the first hydraulic chamber 1100, that is, a fastening hole 1120 formed in the cylinder 20. ), the poppet valve 1400 is configured in the first hydraulic chamber 1100.

In this case, the fixing bolt 1500 is preferably a hexagonal grooved bolt to facilitate fastening and separation. Of course, the present invention is not limited thereto, and any configuration or shape capable of stably fixing and separating the poppet valve 1400 may be used.

As the fastening bolt 1600 is inserted into the insertion hole 1220 of the cover 1200 and is fastened to the cylinder 20, the first hydraulic chamber 1100 formed on one side of the cylinder 20 is covered by the cover 1200 ) To be sealed.

Looking at the operating state of the hydraulic breaker configured as described above is as follows.

First, the poppet valve 1400 is seated in the first seating groove 1110 of the first hydraulic chamber 1100 formed at one side of the cylinder 20, and then the poppet valve 1400 is mounted on the cylinder 20 with a fixing bolt 1500. Let (1400) be fixed.

In this case, the positions of the plurality of flow path holes 1130 configured in the first hydraulic chamber 1100 and the streamline guidance groove 1412 of the poppet valve 1400 are positioned on the same or similar line.

And, after seating the diaphragm 1300 so that the outer periphery is seated in the first seating groove 1140 formed in the first hydraulic chamber 1100, the cover 1200 is positioned outside the diaphragm 1300, and then fastened. The diaphragm 1300 located in the first hydraulic chamber 1100 is securely fixed and fixed to form a sealed state through a bolt 1600.

Accordingly, the configuration of the built-in accumulator including the first hydraulic chamber 1100, the diaphragm 1300, and the cover 1200 formed on one side of the cylinder 20 is completed.

Therefore, without configuring a separate body in which the first hydraulic chamber is formed in the cylinder 20, by directly forming the first hydraulic chamber 1100, sufficient airtightness without configuring a separate packing to improve airtightness and watertightness And while maintaining watertightness, it is possible to eliminate maintenance work and maintenance costs that must be frequently replaced due to damage to the packing due to vibration or oil contact during use.

In addition, by directly mounting the diaphragm 1300 on the cylinder 20 and fixing the diaphragm 1300 to the cylinder 20 with a cover 1200, there is a separate space between the cylinder 20 and the cover 1200. By maintaining airtightness and watertightness through the diaphragm 1300 without configuring packing, the number of parts is minimized, thereby reducing the manufacturing cost.

What has been described above is only one embodiment for implementing a built-in accumulator of a hydraulic breaker, and the present invention is not limited to the above embodiment. Those of ordinary skill in the art to which the present invention pertains will appreciate that various modifications can be implemented without departing from the gist of the present invention.

1000: accumulator 1100: first hydraulic chamber
1110: first seating groove 1120: fastening hole
1130: Euro ball 1140: first seating groove
1200: cover 1210: second hydraulic chamber
1220: insertion hole 1300: diaphragm
1400: poppet valve 1410: body
1412: wired guidance groove 1420: awning
1422: wired drainage surface 1430: 2nd construction
1500: fixing bolt 1600: fastening bolt

Claims (5)

Includes chisel, cylinder, head cap, front head, piston, and valve device to crush concrete or rock by mounting on construction equipment such as an excavator or loader, and is configured on one side of the cylinder to increase and correct pressure In the accumulator of the hydraulic breaker to allow the action to be carried out,
A plurality of first seating grooves 1110 formed at one side of the cylinder 20 and having a predetermined depth at the center, and a plurality of members formed in the first seating grooves 1110 to guide the high-pressure oil in the cylinder 20 A first hydraulic chamber 1100 including a flow path hole 1130 of the;
A cover 1200 fixed to the cylinder 20 so as to seal the first hydraulic chamber 1100 and including a second hydraulic chamber 1210 having a predetermined depth inside;
A diaphragm (1300) configured between the first hydraulic chamber (1100) and the cover (1200) to perform a pressure increase and correction action on the high-pressure oil entering and entering from the cylinder 20;
A poppet valve that is seated in the first seating groove 1110 of the first hydraulic chamber 1100 and guides the high-pressure oil entering and entering between the first hydraulic chamber 1100 and the cylinder 20 to be smoothly and uniformly entered and entered. (1400); And
And a plurality of fastening bolts (1600) providing a fixing force to the cover (1200) so that the cover (1200) is firmly fixed to the cylinder (20);
The poppet valve 1400 includes a body 1410;
And a shading portion 1420 configured to have a predetermined width on the upper end of the body 1410;
The height of the poppet valve 1400 is the same as the height of the first seating groove 1110 of the first hydraulic chamber 1100 to prevent damage to the diaphragm 1300 by preventing interference with the diaphragm 1300 acting as a pressure elevation. Or formed at a low height;
The body 1410 is configured at the same or similar position as the flow path hole 1130 of the first hydraulic chamber 1100, and the high pressure oil entering the cylinder 20 through the flow path hole 1130 is supplied to the first hydraulic chamber. A plurality of streamline guide grooves 1412 to guide the entry to 1100 with an equal force;
Built-in accumulator of a hydraulic breaker, characterized in that it comprises a.
The method according to claim 1, wherein the built-in accumulator 1000 of the hydraulic breaker,
By providing a fixing force to the poppet valve 1400 seated in the first seating groove 1110 of the first hydraulic chamber 1100, the poppet valve 1400 is firmly fixed to the first hydraulic chamber 1100. A fixing bolt 1500 for supporting it to be maintained;
Built-in accumulator of a hydraulic breaker, characterized in that it comprises a.
delete delete The method according to claim 1, wherein the shade portion (1420),
When the high-pressure oil advances from the first hydraulic chamber 1100 to the cylinder 20 by the action of the diaphragm 1300, a streamlined drainage surface formed downward at a certain angle to induce a smooth advance action without dispersing the advance force ( 1422);
Built-in accumulator of a hydraulic breaker, characterized in that it comprises a.

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