KR20140100663A

KR20140100663A - Hydraulic breaker with magnetic sensor for sensing unlocking and breakage of long bolt

Info

Publication number: KR20140100663A
Application number: KR1020130013587A
Authority: KR
Inventors: 이원해; 김학규
Original assignee: 대모 엔지니어링 주식회사
Priority date: 2013-02-06
Filing date: 2013-02-06
Publication date: 2014-08-18

Abstract

The present invention relates to a hydraulic breaker with a magnetic sensor for sensing the loosening and damage of a long bolt, which can sense the loosening or damage of a long bolt for combining a component by being mounted at a main body, due to vibration or impact and can prevent degradation of a hydraulic breaker. The hydraulic breaker comprises: multiple hexagonal nuts (450) where a magnet (510) is inserted into a groove formed on one side and which fixate the top of a long bolt (440); multiple magnetic sensor mounting holes (520) which are formed on a head cap (410); and multiple magnetic sensors (460) which are mounted on the magnetic sensor mounting holes (520). Therefore, the hydraulic breaker with a magnetic sensor for sensing the loosening and damage of a long bolt can inform an operator of the loosening or damage of the hexagonal nuts where the magnet is inserted, through sound or light by detection of the magnetic sensors, so that the operator can easily recognize the loosening or damage of the hexagonal nut, and can extend the life cycle thereof by properly performing repair of the hydraulic breaker in use.

Description

TECHNICAL FIELD [0001] The present invention relates to a hydraulic breaker having a magnetic sensor for detecting the loosening and breakage of a long bolt,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic breaker having a magnetic sensor for detecting loosening and breakage of an elongated bolt, and more particularly, to a hydraulic breaker for detecting a loosening or breakage of an elongated bolt, And a magnetic sensor for detecting the loosening and breakage of the long bolt which can prevent the performance degradation of the hydraulic breaker.

In general, a hydraulic breaker is widely used for crushing concrete and rocks by attaching to a construction equipment such as an excavator and a loader. The hydraulic breaker is a crushing tool, , The piston is moved up and down while striking, and the concrete and the rock are crushed by the impact force.

Such a hydraulic breaker has a problem in that it can not detect that the bolt is loosened or broken due to vibration or impact force generated when crushing concrete and rock by using a chisel.

In order to solve such a problem, Korean Patent No. 10-1193912 as shown in Fig. 1 and Fig. 4 is devised.

The prior art discloses a method of assembling a head cap 10, a front head 40 on which a cylinder 20 and a striking chisel 30 are mounted in order, and then, using the plurality of long bolts 50, (11a) formed on an upper inner circumferential surface of a bolt hole (11) formed in a head cap (10) through which the elongated bolt (50) penetrates, wherein the hydraulic breaker constituting the main body (100) )and; It is possible to prevent the upper end portion of the long bolt 50 from being damped on the inner circumferential surface of the bolt hole 11 of the head cap 10 due to vibration or impact when the hydraulic breaker operates, A pair of dampers 60; And is connected to the lower end of the elongated bolt 50 exposed through the cylindrical shaped bolt exposure groove 41 formed at each corner through the front head 40. When the hydraulic bolt 50 is caused to vibrate or impact upon operation of the hydraulic breaker, And a fixing nut (70) which is cylindrical in shape to induce the contact and in which the movement preventing end (71) for preventing movement to the lower side due to the upper loosening of the long bolt (50) is formed; The damper 60 is positioned on the latching end 11a so as to prevent the damper 60 from being moved to the lower portion of the head cap 10 and the damper 60 is disposed on the upper inner circumferential surface of the small- The curvature portion 61 is formed so as to increase the close contact effect with the small diameter portion 51 when the curved portion 51 faces the curved portion 51; The fixing nut 70 has a function of fastening the main body 100 together with the nut 54 by being fastened to the male screw portion at the lower end of the long bolt 50 by a female screw portion vertically formed in the center portion, Position of the bolt 50 is kept in contact with the inner upper vertex of the bolt exposed groove 41 and the outer vertex upper vertex of the fixing nut 70 and is prevented from moving to the lower side due to the upper loosening of the long bolt 50 The upper surface and the lower surface are in a cylindrical shape so as to be in line contact with the corresponding surface of the front head 40 when vibrating or impacting when the hydraulic breaker is operated. Are both chamfered on one side so as to prevent protrusion to the outside when they are inserted into the bolt-exposing groove 41 formed at the corner of the front head 40 and to be lightweight.

However, in the prior art, the damping phenomenon of the upper and lower ends of the elongated bolt passing through the hydraulic breaker in the vertical direction may be reduced or the elongation of the elongated bolt may not be eccentric. However, There is still a problem that the hex nuts fixing the nut can not be detected to be loosened or broken.

1. Korean Patent No. 10-1193912 entitled "Hydraulic breaker preventing damping and dislocation of a bolt" (registered on Oct. 17, 2012)

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a magnetic sensor capable of easily detecting the loosening and breakage of a long bolt by mounting a magnetic sensor so as to face coaxially with each hex nut inserted with a magnet, It is an object of the present invention to provide a hydraulic breaker equipped with a sensor.

The hydraulic breaker having the magnetic sensor for detecting the loosening and breakage of the long bolt according to the present invention includes a head cap 410 and a front head 430 on which the cylinder 240 and the chisel 130 are mounted And a plurality of long bolts 440 are used to constitute the body part 400 by combining the above components in an integrated state. The hydraulic breaker includes a plurality of A hex nut 450 secures the upper portion of the elongated bolt 440; A plurality of magnetic sensor mounting holes 520 are formed on the head cap 410 and a plurality of magnetic sensors 460 are mounted on the magnetic sensor mounting holes 520.

As described above, the hydraulic breaker having the magnetic sensor for detecting the loosening and breakage of the long bolt according to the present invention detects the loosening or breakage of the hex nut having the magnet inserted therein by the magnetic sensor and informs it through sound or light , The operator of the hydraulic breaker can easily recognize the loosening or breakage of the hex nut.

Further, by properly performing maintenance of the hydraulic breaker in use, there is an advantage that the life cycle of the hydraulic breaker can be increased.

1 is an exploded perspective view in which a main body and a long bolt of a conventional hydraulic breaker are disassembled,
2 is a partial cross-sectional view of Fig.
3 is a schematic view of a hydraulic breaker equipped with a magnetic sensor for detecting the loosening and breakage of an elongated bolt according to the present invention.
4 is an exploded perspective view of a hydraulic breaker having a magnetic sensor for detecting the release and breakage of an elongated bolt according to the present invention.
FIG. 5 is an enlarged view of the main part of FIG. 4 showing an enlarged view of a portion on which the magnetic sensor is mounted.
Fig. 6 is a sectional view of Fig. 5; Fig.
7 is a perspective view of Fig. 6; Fig.
8 is a block diagram of a transmission unit for transmitting a sensing signal by the magnetic sensor according to the present invention.
9 is a block diagram of a receiver for receiving a sensing signal by a magnetic sensor according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a hydraulic breaker having a magnetic sensor for detecting the loosening and breakage of an elongated bolt according to the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and they may vary depending on the intentions or customs of the client, the operator, the user, and the like. Therefore, the definition should be based on the contents throughout this specification.

Like numbers refer to like elements throughout the drawings.

FIG. 3 is a schematic view of a hydraulic breaker having a magnetic sensor for detecting the loosening and breakage of a long bolt according to the present invention. FIG. 4 is a schematic view of a hydraulic breaker having a magnetic sensor for detecting the loosening and breakage of a long bolt according to the present invention. Fig. 5 is an enlarged view of a portion where the magnetic sensor shown in Fig. 4 is enlarged, Fig. 6 is a sectional view of Fig. 5, Fig. 7 is a perspective view of Fig. 6, FIG. 9 is a block diagram of a receiver for receiving a sensing signal by a magnetic sensor according to the present invention. FIG. 9 is a block diagram of a transmitter for transmitting a sensing signal by a magnetic sensor.

3, a hydraulic breaker 100 having a magnetic sensor for detecting the loosening and breakage of a long bolt according to the present invention includes a bracket 110, a bracket 110 mounted on the bracket 110, A mountain cap 120, a piston (not shown) mounted in the bracket 110, and a checker 130 struck by the piston.

4, the hydraulic breaker 100 includes a head cap 410 positioned at an upper portion thereof, a front head 410 mounted with the cylinder 420 and the chisel 130, 430 are assembled in this order, and then the above-described components are combined in an integrated state by using the plurality of long bolts 440 to constitute the body part 400.

The body part 400 is inserted and fixed into the bracket 110 coupled to the upper part of the mountain cap 120 to complete the hydraulic breaker 100.

Here, the head cap 410 is coupled to the upper portion of the cylinder 420 and functions as a lid. In addition, the long bolt 440 is inserted through a bolt hole (not shown) formed in the head cap 410.

The cylinder 420 is installed at the lower portion of the head cap 410. A piston operated in the upward / downward direction is installed by the hydraulic pressure of the operating oil supplied from the outside.

The front head 430 is installed at a lower portion of the cylinder 420 and is operated to prevent the piston 430 from being separated from the cylinder 420 and to receive the operating force of the piston of the cylinder 420 to crush the crushed material The chisel 130 is exposed and installed externally.

The long bolt 440 is inserted through the bolt hole of the head cap 410 and sequentially penetrates through the cylinder 420 and the front head 430. The long bolt 440 is fixed to the cylinder head A large diameter large diameter small diameter small diameter small diameter small diameter small diameter small diameter small diameter small diameter small diameter small diameter small diameter small diameter small diameter small diameter small diameter small diameter small diameter small diameter small diameter small diameter do.

In order to fix the long bolt 440, a plurality of hexagonal nuts 450 are fastened at the upper end to prevent loosening to fix the upper part. In addition, a fixing nut (not shown) may be mounted on the lower portion of the hex nut 450 to prevent the hex nut 450 from being loosened.

A damper 470 is mounted on the upper portion of the long bolt 440 to prevent collision between the long bolt 440 and the mountain cap 120 due to vibration or impact when the hydraulic breaker 100 operates. The damper 470 is formed in the shape of a cross, the material of which is either MC nylon or Teflon. The height of the damper 470 is determined by the length of the bolt 440 protruding from the head cap 410 Is higher than a hex nut 450 fixing the long bolt 440 by a predetermined height. Also, when the size of the hydraulic breaker 100 is changed, the size of the long bolt 440 is also changed, and the size of the damper 470 may be changed according to the size change.

In addition, a groove is formed on one side of the hex nut 450 for fixing the long bolt 440, and a magnet 510 is mounted on the groove.

5 to 7, a plurality of magnetic sensors 460 are mounted on the head cap 410. The plurality of magnetic sensors 460 are mounted on the head 510 of the magnet 510 In a non-contact manner. Therefore, the magnetic sensor 460 senses the movement of the magnet 510 formed in the groove of the hex nut 450. The hexane nut 450 is not limited to the magnetic sensor 510. The hexane nut 450 may be magnetically coupled to the magnetic sensor 460 so that the hexane nut 450 is in the sensing range of the magnetic sensor 460. However, The magnetic sensor 460 recognizes that the magnetic bolt 470 is loosened or broken, and transmits the detection signal to the receiving unit through the transmitting unit, which will be described later, when the magnet 510 formed in the groove of the magnetic sensor 460 is out of the detection range of the magnetic sensor 460. [ To allow the operator of the hydraulic breaker to recognize it.

A plurality of arcuate magnetic sensor mounting holes 520 are formed around the hex nuts 450 on the head cap 410. The magnetic sensor mounting holes 520 may be formed in any one of the plurality of magnetic sensor mounting holes 520, The magnetic sensor 460 can always be mounted so as to be opposed to the magnet 510 inserted in the hex nut 450 in a coaxial manner.

Hereinafter, the operation of the hydraulic breaker having the magnetic sensor for detecting the release and breakage of the long bolt according to the present invention will be described.

3, in order to use the hydraulic breaker 100 having the magnetic sensor for detecting the release and breakage of the long bolt according to the present invention, the body part 400 is fixed to the inside of the bracket 110, And then mounts the mountain cap 120 to receive operating fluid such as an excavator.

When the hydraulic pressure is supplied after the completion of the mounting, the hydraulic oil is repeatedly supplied / discharged to the inside of the cylinder 420, and the crush is crushed by striking the chisel 130 with the operating force of the piston up / down. At this time, the vibration or the impact force generated by the crushing action is transmitted to the body part 400 through the chisel 130, part of which is absorbed and destroyed by the body part 400 itself, but the rest is transmitted through the long bolt 440.

The damper 470 is compressed along the direction in which the long bolt 440 moves so that the long bolt 440 and the mountain cap 120 ) And absorbs vibration and impact force and extinguishes them.

However, when such vibration or impact force is transmitted for a long period of time, the hex nut 450 fixing the long bolt 440 is loosened or broken. The magnetic sensor 460 senses the loosening or breakage of the long bolt 440. That is, the hexagon nut 450 is loosened or broken due to the vibration or the impact force, so that the magnet 510 inserted in one side of the hexagon nut 450 coaxially and non-contact with the magnet 510 The magnetic sensor 460 senses that the hex nut 450 has been loosened or broken and transmits a sensing signal to the receiving unit through the transmitting unit so that the hydraulic pressure Thereby allowing the operator of the breaker 100 to recognize it.

8 and 9, a configuration of a transmitting unit and a receiving unit for transmitting and receiving a sensing signal by the magnetic sensor according to the present invention will be described in detail.

8, a transmitter 800 for transmitting a sensing signal by a magnetic sensor according to the present invention includes a magnetic switch 810 operated by a sensing signal generated by a magnetic sensor 460, ; An A / D converter (not shown) for converting an analog signal generated by the operation of the magnetic switch 810 into a digital signal is built in, and a digital (not shown) for digital filtering the digital signal converted by the A / A signal processing unit 820; A transmission signal processing unit 830 for processing the digital signal filtered by the digital signal processing unit 820 into a transmission signal; A transmission antenna 840 for transmitting a transmission signal processed by the transmission signal processing unit 830; And controls the operation of the magnetic switch 810, the digital signal processing unit 820, the transmission signal processing unit 830 and the transmission antenna 840. In response to the processed transmission signal, A sending MCU (Micro Controller Unit) 850 for checking which hex nut is loosened or broken; And a transmission control unit 860 for transmitting a status checked by the transmission MCU 850 to a reception unit described later through the transmission antenna 840.

When the magnetic switch 810 is operated by the sensing signal generated by the magnetic sensor 460 and the analog signal generated by the operation of the magnetic switch 810 is input to the built- The digital signal processor 820 digitally filters the digital signal converted by the A / D converter, processes the filtered digital signal as a transmission signal by the transmission signal processor 830, and outputs the processed signal to the transmission antenna 840 The transmission MCU 850 controls the operations of the magnetic switch 810, the digital signal processing unit 820, the transmission signal processing unit 830 and the transmission antenna 840. In this case, And checks whether any of the hexanuts 450 has been loosened or broken due to the processed transmission signal. The transmission control unit 860 transmits the checked status to the transmission antenna 840 To the receiving unit to be described later.

The transmitter 800 may be mounted on one side of the bracket 110 or the body 400 and may be operated by a battery.

9, a receiving unit 900 for receiving a signal transmitted by a transmitting unit 800 for transmitting a sensing signal by a magnetic sensor according to the present invention includes a transmitting antenna 800 of the transmitting unit 800, A receive antenna 910 for receiving a transmit signal transmitted by the antenna 840; A reception signal processor 920 for processing a transmission signal received by the reception antenna 910 into a reception signal; A reception controller 930 for transmitting the signal processed by the reception signal processor 920 to the reception MCU 940; A buzzer 950 for acoustically transmitting the situation received by the reception control unit 930 to the operator of the hydraulic breaker 100; A plurality of LEDs 960 for transmitting the status received by the reception control unit 930 to the operator of the hydraulic breaker 100 as light emission; A reset switch 970 for resetting the hexa nut 450 and resetting all the states; A reception MCU 940 for controlling operations of the reception antenna 910, the reception signal processing unit 920, the reception control unit 930, the buzzer 950, the plurality of LEDs 960, and the reset switch 970 .

Here, the number of the LEDs 960 is equal to the number of the hex nuts 450, and LEDs corresponding to the loosened or broken hex nuts checked by the transmitting MCU 850 are emitted.

The operation of the receiver 900 configured as above will be described below. The reception antenna 910 receives a transmission signal transmitted through the transmission antenna 840 of the transmission unit 800 and outputs the received transmission signal to the reception signal processor 920 to the receiving MCU 940 and the receiving MCU 940 transmits the processed incoming signal to the buzzer 950 and the LED 960 To the operator of the hydraulic breaker (100) by sound or light emission, thereby causing the operator of the hydraulic breaker (100) to recognize the loosening or breakage of the hex nut.

Thereafter, after the loosened or broken hex nuts are tightened or replaced, all the conditions are initialized by the operation of the reset switch 970.

The receiving unit 900 is mounted in the cab of the cabin, and is operated by the vehicle's own power source.

The hydraulic breaker having the magnetic sensor for detecting the loosening and breakage of the long bolt according to the present invention can easily detect the loosening or breakage of the hex nut having the magnet inserted therein by the magnetic sensor and informing it through sound or light, The operator can easily recognize the loosening or breakage of the hex nut. In addition, by properly performing maintenance of the hydraulic breaker in use, the life cycle of the hydraulic breaker can be increased.

Although, in the embodiment of the present invention, the magnetic sensor is installed outside the hex nut, it goes without saying that the magnetic sensor can be installed inside the hex nut.

Also, hex nuts are used, but it is needless to say that polygonal nuts can be used.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, Various changes, modifications or adjustments to the example will be possible. Therefore, the scope of protection of the present invention should be construed as including all changes, modifications, and adjustments that fall within the spirit of the technical idea of the present invention.

100: Hydraulic breaker 110: Bracket
120: Mountain cap 130: chisel
400: Body part 410: Head cap
420: cylinder 430: front head
440: long bolt 450: hex nuts
460: Magnetic sensor 470: Damper
510: Magnetic 620: Magnetic sensor mounting hole
800: Transmitting section 810: Magnetic switch
820: digital signal processor 830: transmission signal processor
840: Transmission antenna 850: Transmission MCU
860: Transmission control section 900:
910: Receive antenna 920: Received signal processor
930: Reception control unit 940: Receiving MCU
950: buzzer 960: LED
970: Reset switch

Claims

The head cap 410 and the front head 430 on which the cylinder 420 and the chisel 130 are mounted are assembled in this order and then the respective components are assembled in an integrated state using a plurality of long bolts 440 As a hydraulic breaker constituting the body part (400)
A plurality of hexagonal nuts 450 having a magnet 510 inserted in a groove formed at one side fix the upper portion of the long bolt 440;
Wherein a plurality of magnetic sensor mounting holes 520 are formed on the head cap 410 and a plurality of magnetic sensors 460 are mounted on the magnetic sensor mounting holes 520. [ And a magnetic sensor for detecting the hydraulic brake.

The method according to claim 1,
The plurality of magnetic sensors 460 are mounted on the plurality of magnetic sensor mounting holes 520 so that the magnetic sensor 460 senses the movement of the magnetic 510 formed in the groove of the hex nut 450 A hydraulic breaker comprising a magnetic sensor for detecting the loosening and breakage of a long bolt.

The method according to claim 1,
The plurality of magnetic sensor mounting holes 520 are formed in the shape of an arc on the head cap 410 so that whichever of the plurality of magnetic sensor mounting holes 520 is mounted on the magnetic sensor 460, Wherein the magnetic sensor (460) is coaxially opposed to the magnet (510) inserted in the hex nut (450) in a non-contact manner. The hydraulic breaker as claimed in claim 1, wherein the magnetic sensor (460)

The method according to claim 1,
A damper 470 is mounted on the upper portion of the long bolt 440 to prevent collision between the long bolt 440 and the mountain cap 120 due to vibration or impact when the hydraulic breaker 100 is operated;
The height of the damper 470 is higher than that of the long bolt 440 protruding on the head cap 410 and the hex nut 450 fixing the long bolt 440. [ And a magnetic sensor for detecting the loosening and breaking of the hydraulic breaker.

The method according to claim 1,
A magnetic switch 810 operated by a sensing signal generated by the magnetic sensor 460;
A digital signal processor 820 for digitally filtering the digital signal converted by the A / D converter, an A / D converter for converting an analog signal generated by the operation of the magnetic switch 810 into a digital signal, Wow;
A transmission signal processing unit 830 for processing the digital signal filtered by the digital signal processing unit 820 into a transmission signal;
A transmission antenna 840 for transmitting a transmission signal processed by the transmission signal processing unit 830;
And controls the operation of the magnetic switch 810, the digital signal processing unit 820, the transmission signal processing unit 830 and the transmission antenna 840. In response to the processed transmission signal, A sending MCU (Micro Controller Unit) 850 for checking which hex nut is loosened or broken;
And a transmission control unit 860 for transmitting the status checked by the transmission MCU 850 to a reception unit described later via the transmission antenna 840. [ A hydraulic breaker comprising a magnetic sensor for detecting loosening and breakage.

The method according to claim 1,
A reception antenna 910 for receiving the transmission signal transmitted by the transmission antenna 840 of the transmission unit 800;
A reception signal processor 920 for processing a transmission signal received by the reception antenna 910 into a reception signal;
A reception controller 930 for transmitting the signal processed by the reception signal processor 920 to the reception MCU 940;
A buzzer 950 for acoustically transmitting the situation received by the reception control unit 930 to the operator of the hydraulic breaker 100;
A plurality of LEDs 960 for transmitting the status received by the reception control unit 930 to the operator of the hydraulic breaker 100 as light emission;
A reset switch 970 for resetting the hexa nut 450 and resetting all the states;
A reception MCU 940 for controlling operations of the reception antenna 910, the reception signal processing unit 920, the reception control unit 930, the buzzer 950, the plurality of LEDs 960, and the reset switch 970 The hydraulic breaker according to claim 1, further comprising a reception unit (900) configured to detect a release and breakage of the long bolt.