KR20170000594U - Rod for hydraulic percussion apparatus - Google Patents

Rod for hydraulic percussion apparatus Download PDF

Info

Publication number
KR20170000594U
KR20170000594U KR2020150005244U KR20150005244U KR20170000594U KR 20170000594 U KR20170000594 U KR 20170000594U KR 2020150005244 U KR2020150005244 U KR 2020150005244U KR 20150005244 U KR20150005244 U KR 20150005244U KR 20170000594 U KR20170000594 U KR 20170000594U
Authority
KR
South Korea
Prior art keywords
rod
center
center rod
hydraulic
striking device
Prior art date
Application number
KR2020150005244U
Other languages
Korean (ko)
Inventor
박윤희
Original Assignee
박윤희
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 박윤희 filed Critical 박윤희
Priority to KR2020150005244U priority Critical patent/KR20170000594U/en
Publication of KR20170000594U publication Critical patent/KR20170000594U/en

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
    • E02F5/305—Arrangements for breaking-up hard ground
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
    • E02F3/966—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of hammer-type tools

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Earth Drilling (AREA)

Abstract

More particularly, the present invention relates to a rod for a hydraulic striking device, and more particularly to a rod for a hydraulic striking device, in which an insertion hole is formed at the center of a lower end of a rod body and a center rod having a sharp end and a high hardness is inserted, A plurality of stepped portions are formed on the periphery of the rod, and the rod is inserted into the insertion hole. After the rod is heated to a high temperature, it is pressed and fixed by a columnar shape so that the center rod is not abraded well, So that the workability of the hydraulic impact device can be improved.

Description

[0001] ROD FOR HYDRAULIC PERCUSSION APPARATUS [0002]

More particularly, the present invention relates to a rod for a hydraulic striking device, and more particularly to a rod for a hydraulic striking device, in which an insertion hole is formed at the center of a lower end of a rod body and a center rod having a sharp end and a high hardness is inserted, A plurality of stepped ends are formed on the periphery of the rod, and then inserted into the insertion hole. After the rod is heated to a high temperature, it is pressurized and fixed in a columnar shape so that the center rod is not abraded well, So that the workability of the hydraulic impact device can be improved.

In general, the hydraulic striking device is a hydraulic breaker or a hydraulic rock drill that is used to crush concrete or rock by attaching to a construction machine such as an excavator or a loader.

The hydraulic striking device has a striking body formed therein, and a bit rotating mechanism (hereinafter, referred to as an operating port) having a chisel or a bit rotated by a rotating motor is fixed at a lower end thereof.

In the striking body of the hydraulic striking device, a piston is formed therein, and the piston hits the end of the actuating part while moving up and down by hydraulic pressure.

6 shows a conventional hydraulic striking device in which a piston 50 is formed inside a body 10 and a rod 40 struck by the piston 50 is fixed to the fixture 30 .

BACKGROUND ART [0002] A technique relating to a conventional hydraulic striking device has been disclosed in Korean Patent Publication Nos. 1996-0006735, 04567868, 0998261, 0772301, and 2011-0086289.

However, the conventional rod for a hydraulic striking device has the following problems.

(1) is formed into a single body, and the end portion, that is, the striking portion is sharpened, it is difficult to make the entire material of a hard material such as carbon steel.

(2) Continuous use causes the striking part to be easily worn out, resulting in a blunt end, which lowers the working efficiency.

(3) If the striking part becomes stubborn, it must be reworked after it is collected, thus increasing the maintenance cost.

In order to solve the above problems, the present invention is a general rod fixed to a fixture of a hydraulic striking device,

The rod is formed with a space portion opened to the lower end inside the rod body, and a center rod is inserted and fixed in the space portion. A plurality of stepped portions are formed on the periphery of the center rod. And the center rod is fixed by pressurization.

According to the present invention, the following effects can be obtained according to the rod for hydraulic striking device and the production method thereof.

(1) Since the rod body can be made of ordinary steel and only the center rod can be made of a hardened special steel, the product can be manufactured at a strong and low price.

(2) Since the striking portion of the center rod is not abraded well, the workability is excellent and the working efficiency is improved.

(3) Since the service life is longer by about two to three times than the conventional rod, the overall cost is reduced.

(1) A sectional view showing various forms of a rod for a hydraulic striking device formed as a preferred embodiment of the present invention.
(2) An enlarged cross-sectional view of a rod for a hydraulic striking device formed as a preferred embodiment of the present invention.
(3) A conceptual view showing a conventional hydraulic striking device.

The present invention relates to a general rod 100 fixed to a fixture of a hydraulic striking device,

The rod 100 is formed with a space 120 opened to the lower end inside the rod body 110 and the center rod 210 is inserted and fixed in the space 120,

A plurality of stepped protrusions 220 protrude from the center of the center rod 210, and the center rod 210 is fixed by pressing the rod body 110 in a heated state.

The rod body 110 may be formed in a cylindrical or square pillar shape and an inclined portion 115 may be formed at a lower end thereof.

A space 120 opened to the lower end is formed in the rod body 110. The space 120 is deeply formed in the center of the rod body 110.

The rod body 110 utilizes soft steel having a low price and not a special steel.

The center rod 210 is made of special steel, and the step 220 is processed and heat treated to be very strong.

At the end of the center rod 210, a striking part 212 may be formed, and the striking part 212 may be pointed or not.

The step 220 is protruded to the periphery of the center rod 210, and may have a height of several millimeters (mm) to several centimeters (cm).

Since the step 220 is stronger than the rod body 110, when the outer periphery of the rod body 110 is pressed with a strong pressure while the rim of the rod body 110 is heated, the space 120 is distorted, The step 220 is fixed to the inner wall of the space part 120 of the second housing 120. [

The method for manufacturing the rod for the hydraulic striking device of the present invention includes a rod body machining step of machining the rod body 110 such that the upper end is fixed to the fixture of the hydraulic striking device and the space portion 120 is formed from the lower end thereof 1);

A center rod processing step (2) of processing a center rod to be inserted into the space part (120) of the rod body (110), and processing a center rod (210) having a plurality of steps (220) protruded;

A heat treatment step (3) of heating and strengthening the center rod (210);

An inserting step (4) of inserting the center rod (210) while the rod body (110) is heated to a high temperature and inserting the striking part (212) so as to protrude;

And a pressing step 5 in which the step 220 protruding from the periphery of the center rod 210 is pressed against the rod body 110 when the rod body 110 is sufficiently heated in the inserting step 4.

In the inserting step (4), the body of the rod body (110) is heated to very high heat until softened.

The diameter of the space part 120 is formed to include the width of the step 220 formed in the center rod 210 so that the center rod 210 can be easily inserted into the space part 120.

A plurality of the stepped protrusions 220 protrude in a ring shape on the periphery of the center rod 210 or protrude along the periphery of the center rod 210 in the form of a screw as shown in FIG.

When the step 220 is formed into a screw shape, even if the space 120 is machined to have a gap with the center rod 210, it can be easily inserted while being easily rotated.

The height of the step 220 with respect to the outer circumference is within 1 to 30 mm.

In the pressing step (5), a compression processing machine (300) is used. The compression processing machine (300) includes four compression plates (310) symmetrically arranged about the center axis, A plurality of compression cylinders 320 capable of being pushed at the same pressure are formed in the periphery.

Hereinafter, the operation and effects of the rod for a hydraulic striking device formed as a preferred embodiment of the present invention will be described.

When the upper end of the rod 100 is struck by a strong impact of the piston, the lower striking part 212 strikes a part to be broken or hit.

At this time, since the striking portion 212 formed at the end of the center rod 210 is very strong, the end is not worn out and foreign substances are naturally discharged by the inclined portion 115, thereby improving work efficiency.

However, since a very strong object is struck, the center rod 210 is used as a strong material and is worn out even if it is well heat treated. In the case of a conventional rod, the amount of using two pieces per month is about 8 hours per day According to the present inventive rod 100, the efficiency of the work does not deteriorate even if one is used every two months.

According to the rod for the hydraulic striking device according to the present invention, since the rod body can be formed of a general steel and the center rod can be made of only a hard and special steel, the product can be produced at a strong and low price, The workability is improved and the working efficiency is increased and the lifetime is longer than that of the conventional rod by about 2 to 3 times.

Although the present invention has been described with reference to the preferred embodiments thereof with reference to the accompanying drawings, it will be apparent to those skilled in the art that various modifications are possible without departing from the scope of the present invention as defined by the appended claims.

100: rod 110: rod body
115: inclined portion 120:
210: center rod 212:
220: Step 300: Compression machine
310 compression plate 320 compression cylinder

Claims (5)

In a typical rod (100) fixed to a fixture of a hydraulic striking device,
The rod 100 is formed with a space 120 opened to the lower end inside the rod body 110 and the center rod 210 is inserted and fixed in the space 120,
Wherein a plurality of stepped protrusions 220 are formed at the periphery of the center rod 210 and presses the rod body 110 in a heated state to fix the center rod 210. [ The method according to claim 1,
Characterized in that the step is formed in the form of a screw on the periphery of the center rod. The method according to claim 1,
A rod body processing step (1) of processing the rod body (110) when fixing the center rod to the space portion of the rod; A center rod machining step (2) of machining the center rod (210); A heat treatment step (3) of heating and strengthening the center rod (210); An inserting step (4) of inserting the center rod (210) while the rod body (110) is heated to a high temperature and inserting the striking part (212) so as to protrude; And a pressing step (5) in which the step body (220) is pressurized into a cylindrical shape when heated sufficiently in the state of the inserting step (4) so that the stepped protrusions (220) projecting to the periphery of the center rod (210) are integrated with the rod body Features a rod for a hydraulic striking device. The method according to claim 1,
Wherein in the pressing step, a compression processing machine is formed in which four compression plates symmetrically formed in the axial direction are operated by compression cylinders. 3. The method according to claim 1 or 2,
Wherein the step is formed in a range of 1 to 30 mm.
KR2020150005244U 2015-08-05 2015-08-05 Rod for hydraulic percussion apparatus KR20170000594U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2020150005244U KR20170000594U (en) 2015-08-05 2015-08-05 Rod for hydraulic percussion apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2020150005244U KR20170000594U (en) 2015-08-05 2015-08-05 Rod for hydraulic percussion apparatus

Publications (1)

Publication Number Publication Date
KR20170000594U true KR20170000594U (en) 2017-02-15

Family

ID=58405086

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2020150005244U KR20170000594U (en) 2015-08-05 2015-08-05 Rod for hydraulic percussion apparatus

Country Status (1)

Country Link
KR (1) KR20170000594U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114960819A (en) * 2022-05-24 2022-08-30 广西新港湾工程有限公司 Hydraulic column

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114960819A (en) * 2022-05-24 2022-08-30 广西新港湾工程有限公司 Hydraulic column
CN114960819B (en) * 2022-05-24 2024-01-05 广西新港湾工程有限公司 Hydraulic column

Similar Documents

Publication Publication Date Title
US7438139B2 (en) Tool retention apparatus and method
US9102045B2 (en) System and method for easy removal of hydraulic hammer bushing
US6510904B1 (en) Protected tool bushing for an impact hammer
KR101799794B1 (en) Composite Wedge shaped Rock splitting device and Splitting Method Using the Same
KR101592238B1 (en) Hammer bits for excavators
AU2010303990B2 (en) Hard metal insert for a drill bit for percussion drilling and method for grinding a hard metal insert
JP4636294B1 (en) Crushing method and crushing device
JP5145503B1 (en) Crushing method
KR100824769B1 (en) Breaking apparatus and tool
KR20170000594U (en) Rod for hydraulic percussion apparatus
CN105443032A (en) Efficient drill tool of rock drill
CN205379931U (en) Crusher rotor
CN109719465A (en) A method of wear-resisting inserted cutter ring is made using cold pressing
KR101536674B1 (en) Bolt Joint Type Air Hammer Bit
CN207878541U (en) A kind of quartering hammer
KR960002678Y1 (en) Drill hammer bit
CN201241703Y (en) Core inlaid drill rod for hydraulic breaking hammer
KR101418106B1 (en) Piston for breaker working by oil pressure
AU1546099A (en) Percussion boring machine
CN101683699B (en) Ore crusher rotor disk hinge pin dismantling method
CN219197340U (en) Wear-resistant cutter head for shield tunneling machine
CN216328020U (en) Pneumatic tool adaptation detacher
CN216328025U (en) Chisel tool extracting tool
KR200497858Y1 (en) A indication nail hole pretreatment tool
KR20150094296A (en) Chisel

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E902 Notification of reason for refusal
E601 Decision to refuse application