KR101872816B1 - Rotator for excavator - Google Patents

Abstract

Disclosed is a rotator for an excavator. According to the present invention, a first fastening unit and a rotating apparatus are detachably coupled, and a tilting apparatus is selectively mounted between the first fastening unit and the rotating apparatus depending on a situation of a work site or a purpose of use. Therefore, the present invention can be configured so as to enable only a rotating operation of a bucket, or rotating and tilting drive of the bucket.

Description

Rotor for excavator {ROTATOR FOR EXCAVATOR}

The present invention relates to a rotator for an excavator, and more particularly, to a rotator for an excavator capable of rotatably driving a bucket provided in an excavator, comprising: a base having a rectangular plate shape having a predetermined thickness; A first fastening portion including two fixing pins provided at an upper portion of the base so as to be fixed to the first fixing ring and the second fixing ring of the clamper, the first fastening portion being coupled to the clamper; A worm wheel rotatably installed in the housing; a worm engaged with the worm wheel; and a hydraulic motor for driving the worm; A first pin rod insertion groove formed on one side of the body for receiving a first pin rod formed on the bucket, and a second pin rod insertion groove provided on the other side of the body, And a second fastening portion coupled to the bucket and configured to rotate the bucket, the second fastening portion including a movable hook that is rotatably provided through the bucket and fixes the second pin rod formed on the bucket, Wherein the first fastening part and the rotating device are detachably coupled to each other to selectively mount the tilting device therebetween.

Generally, an excavator includes a lower traveling body, an upper frame mounted on the lower traveling body and pivoting in the left or right direction by driving means, a cab and engine room mounted on the front and rear of the upper frame, A boom, an arm connected to the boom and operated by a hydraulic cylinder, and a bucket connected to an end of the arm and operated by a hydraulic cylinder.

The boom is vertically rotated by the operation of the first hydraulic cylinder connected to the upper frame, and the arm is pivoted about the boom connecting portion by the operation of the second hydraulic cylinder installed on the boom, The bucket is rotated by the operation of the hydraulic cylinder so that the drilling operation is performed by the rotation radius change of the arm and the rotation of the bucket.

However, such a conventional excavator is vertically rotated by the first, second, and third hydraulic cylinders to perform the excavation work. Therefore, in a space where the excavator is difficult to run or turn, that is, Only one excavation operation is performed for one direction, and the excavation direction can not be changed.

To solve such a problem, Korean Patent Registration No. 10-1471177 discloses a "clamping device for an attachment for an excavator ".

Said clamping device comprising: a first clamper coupled to a boom of an excavator; A second clamper coupled to the attachment; And a rotation driving unit installed between the first clamper and the second clamper and rotating the attachment with respect to an axis extending in a vertical direction or extending in a horizontal direction, And a rotating unit for rotating the second clamper and the attachment about a vertical axis extending in the vertical direction, wherein the attachment of the boom and the attachment of the excavator is tilted And rotational driving is enabled.

However, since the first clamper, the tilting unit, the rotating unit, and the second clamper are integrally formed in the clamping device, the size of the device is increased, so that the work may be limited if the work site is narrow. That is, the tilting unit is not required at a work site requiring only a rotating function, but the clamping device can not separate the workpiece from the workpiece, thereby deteriorating workability.

SUMMARY OF THE INVENTION The present invention has been developed in order to solve the above-mentioned problems, and it is an object of the present invention to provide a tilting apparatus which is detachably coupled with a first fastening unit coupled with a clamper mounted on a tip end of an arm, And an object of the present invention is to provide a rotator for an excavator.

In order to accomplish the above object, the present invention provides a rotator for an excavator which is capable of rotating a bucket of an excavator, comprising: a base having a rectangular plate shape having a predetermined thickness; and a clamper And two fixing pins provided at an upper portion of the base so as to be fixed to the first fixing ring and the second fixing ring of the base, wherein a plurality of bolt fastening holes are formed on both sides of the base in the width direction, A plurality of bolt fastening holes formed on the inner side in the longitudinal direction and coupled with the clamper; A housing in which a plurality of bolt fastening holes are formed on both sides in the width direction so as to correspond to bolt fastening holes formed on both sides of the base in a width direction so as to be detachably coupled to the bottom surface of the first fastening portion; A worm wheel engaged with the worm wheel, and a hydraulic motor for driving the worm; A first pin rod insertion groove formed on one side of the body for receiving a first pin rod formed on the bucket, and a second pin rod insertion groove provided on the other side of the body, A second coupling part coupled to the bucket and configured to rotate the bucket, the second coupling part including a movable hook that is rotatably provided through the bucket and fixes a second pin rod formed on the bucket; A first fluid supply line and a second fluid return line for supplying and discharging fluid, and a first fluid supply line and a second fluid supply line, And a plurality of bolts formed on the inner surface of the base in a longitudinal direction so as to be detachably coupled to the first coupling portion, wherein the rotation disc is rotatable via a bearing and has a plurality of bolt fastening holes formed on an outer circumferential surface thereof, A plurality of bolt fastening holes corresponding to the bolt fastening holes formed on the rotary disk so as to be rotated together with the rotary disk by being bolted to the rotary disk are formed, A plurality of bolt fastening holes corresponding to a plurality of bolt fastening holes formed in the housing so as to be detachably coupled to the rotatable device, A second screw thread formed on an outer circumferential surface of the tilting housing so as to be engaged with the first screw thread and having a third screw thread formed on an inner circumferential surface thereof in a direction opposite to the second screw thread, A first gear which is moved to one side along a first thread when a fluid is introduced into the tilting housing through a line, and both ends of the tilting housing are rotatably engaged with the rotary disk, 1 gear is formed on the outer circumferential surface, and when the first gear is moved to one side, it is rotated in a direction opposite to the first gear to tilt the second coupling portion in one direction, When the fluid is introduced into the tilting housing through the second gear, the first gear is moved in the other direction and the second gear is tilted in the reverse direction And a tilting device including a tilting device including a plurality of bolt coupling holes formed in both sides of the base in the width direction and a plurality of bolt coupling holes formed in both sides of the housing in a width direction, And the tilting device is selectively mounted between the coupling part and the rotating device, wherein the coupling part and the tilting device have a plurality of bolt coupling holes formed in the longitudinal direction on the inner surface of the base, The tilting device and the rotating device are provided with a plurality of bolt fastening holes formed in the lower end portion of the fixing plate in the width direction and a plurality of bolt fastening holes formed on both sides of the housing in the width direction And a plurality of bolt fastening holes formed in the body, It shall be.

delete

Further, the present invention is characterized in that a pair of hydraulic cylinders are provided on the outer circumferential surfaces of both sides of the body of the second fastening portion in the longitudinal direction, and a rod is installed on the movable hook side and a casing is provided, A first fixed shaft, a second fixed shaft which is engaged with the hydraulic cylinder rod, and a second fixed shaft which is vertically coupled to both ends of a support bracket that closely contacts the outer peripheral surface of the movable hook of the body, A first upper plate hinged to an upper end of the second fixed shaft and hinged to an upper end of the third fixed shaft at one end thereof, A first lower plate hinged to the lower end of the second fixed shaft and hinged to the lower end of the third fixed shaft at the other end and a second lower plate hinged to the lower end of the second fixed shaft, A first crushing part hinged to the center of the third fixed shaft and formed with a first crushing blade integrally formed by extending a predetermined length outwardly, a second intermediate plate hinged to the center of the second fixed shaft, A second crushing blade formed at an upper end and a lower end of the second intermediate plate and having one end hinged to the upper end of the second fixed shaft and the other end hinged to the upper end of the third fixed shaft, And a second crushing unit having a third crushing blade integrally formed by hinging the lower end of the second fixed shaft and the other end hinged to the lower end of the third fixed shaft and having a predetermined length extended outwardly, And when the rod of the pair of hydraulic cylinders is released, the first crushing blade, the second crushing blade and the third crushing blade rotate about the second fixed axis, respectively, And a crushing device for crushing and breaking the crushing device can be detachably attached to the second fastening part.

According to another aspect of the present invention, there is provided an excavator comprising: a solenoid valve for setting a moving direction of a fluid supplied from a hydraulic tank according to an electric signal transmitted from a main control box for converting a driving command inputted to a joystick provided in the excavator into an electric signal, And a hydraulic block including a hydraulic line supplying the fluid according to the direction set by the solenoid valve, supplying the fluid to the hydraulic motor or the hydraulic cylinder, and recovering the hydraulic fluid to the hydraulic tank.

The hydraulic block may include a solenoid valve for rotating the rotating device, a tilting solenoid valve for tilting the tilting device, and a bucket for moving the movable hook, A solenoid valve for crushing work for crushing operation of the crushing device, and a solenoid valve for an optional work device for driving an optional work device to be removed and replaced with a bucket .

According to the present invention as described above, since the first fastening part and the rotating device are detachably coupled, a tilting device is selectively installed between the first fastening part and the rotating device, It is possible to configure such that only the rotating operation is possible or the rotating and tilting driving of the bucket is possible.

In addition, since the present invention can be used in combination with the second fastening portion in a detachable manner, it is possible to cut or crush an object which is heavy or bulky and which is difficult to carry, and a complex hydraulic line is provided through the hydraulic block There is an advantage that various operations of the bucket can be realized.

1 is an illustration of a typical clamper for mounting an excavator bucket;
2 is an exemplary view of a rotator for an excavator according to the present invention;
3 is an illustration of an example of a first fastening portion according to the present invention.
Figure 4 is an illustration of an example of a rotating device according to the present invention;
5 is an exemplary view of a second fastening portion according to the present invention;
Figure 6 is an illustration of an example of a tilting device in accordance with the present invention;
7A to 7C are schematic views for explaining the operation principle of the tilting apparatus according to the present invention.
8 is an exemplary view of a rotator for an excavator in which a tilting device is coupled between a first fastening portion and a rotating device according to an embodiment of the present invention.
Fig. 9 is an exemplary view showing the bucket mounted on the excavator rotator of Fig. 8; Fig.
10 is an exemplary view of a shredding apparatus according to the present invention.
11 is an exemplary view of a rotator for an excavator in which a crushing device is coupled to a second fastening part according to an embodiment of the present invention.
12 is a schematic illustration for explaining a principle of controlling a rotator for an excavator according to the present invention;
13 is a circuit diagram of a solenoid valve provided in a hydraulic block according to an embodiment of the present invention.
FIG. 14 is a circuit diagram of a main control box for converting a driving command of a joystick provided in an excavator into an electrical new circuit according to an embodiment of the present invention; FIG.

Hereinafter, a rotator for an excavator according to the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a rotator for an excavator which enables rotatable driving of an excavator bucket. The rotator includes a first coupling part (10) coupled with a clamper (1) mounted at the tip of an arm of an excavator, 20 can be detachably coupled to selectively mount the tilting device 40 therebetween, so that the operator (user) can selectively rotate the bucket only or the tilting operation can be performed together with the rotating operation The present invention relates to a rotator for an excavator.

2 to 5, the rotator for an excavator according to the present invention includes a first fastening part 10, a rotating device 20, and a second fastening part 30.

The first fastening part 10 is coupled with the clamper 1 and is provided with a base 11 in the form of a rectangular plate having a predetermined thickness and strength, Two fixing pins 12 are provided at regular intervals along the longitudinal direction so as to be fixed to the first fixing ring 2 and the second fixing ring 3 of the clamper 1 mounted on the tip end. The second fixing ring 3 of the clamper is rotatably provided through the cylinder so that the fixing pin 12 can be firmly fixed so as not to be detached.

A plurality of bolt fastening holes H are formed in the base 11 along the width direction and the longitudinal direction. The bolt fastening holes H1 formed along the width direction are for bolt connection with the rotatable device 20 and the bolt fastening holes H2 formed along the longitudinal direction are connected to the tilting device 40, For binding.

The rotatable device 20 includes a housing 21 coupled to the bottom of the base, a worm wheel 22 rotatably installed in the housing, a worm 23 meshing with the worm wheel, And a hydraulic motor 24 for driving the motor.

A plurality of bolt fastening holes H3 are formed at positions corresponding to the bolt fastening holes H1 formed along the width direction of the base, And is detachably coupled through bolt (B) fastening at the bottom of the base.

The worm wheel 22 and the worm 23 of the rotating device reduce the rotational speed of the hydraulic motor 24 and increase the force so that the heavy bucket 4, the rotating device 20 mounted on the bucket, So as to smoothly perform the rotation operation.

The second fastening part 30 includes a body 31 coupled to the bottom surface of the worm wheel 22 and rotated together with the worm wheel 22 and a first pin rod 23 formed on one side of the body, (Not shown) formed on the bucket and rotatably provided on the other side of the body, for accommodating the movable pin (not shown) 33). 5, the worm wheel 22 is fixed to the upper end of the body 31 so that the coupling between the second fastening part 30 and the rotating device 20 can be easily understood.

The first pin rod insertion groove 32 is formed to have a substantially "⊂" shape so as to receive the first pin rod, and a first pin rod insertion groove 32 is formed at the lower- A release protrusion 321 protruding upward is formed to prevent the first pin rod from being pulled out due to the load of the bucket when the bucket is lifted after being pulled into the one-pin rod insertion groove.

That is, when the bucket 4 is engaged with the second fastening portion 30, the first pin rod is first inserted into the first pin rod insertion groove 32, and then the second pin rod is inserted through the movable hook 33, The bucket 4 is lifted by raising the arm connected to the boom by raising the boom to fix the bucket 4. At this time, the first pin rod is pushed rearward due to the load of the bucket 4, The movable hook 33 may not fix the second pin rod. The present invention can prevent the above-described problems by forming the separation preventing jaw 321 protruding upward from the end of the first pin rod inserting groove.

The second coupling part 30 fixes the bucket 4 through the movable hook 33. When the worm is rotated by receiving the power from the hydraulic motor 24, the body 31 rotates the worm wheel 22, The direction of the bucket 4 mounted on the second fastening part 30 can be changed, so that the worker can smoothly work.

Next, the present invention includes a tilting device 40 configured to be selectively mountable between the first fastening part 10 and the rotatable device 20. 6 and 7A to 7C, the tilting apparatus 40 includes a tilting housing 41, a fixing plate 42, a first gear 43 and a second gear 44. [

The tilting housing 41 is formed in a substantially cylindrical shape in which a space is formed therein and a first screw thread 411 having a predetermined length is formed on one side of the inner circumferential surface. A plurality of bolt fastening holes H4 are formed in the tilting housing 41 at positions corresponding to a plurality of bolt fastening holes H1 formed in the width direction on the base and bolted to the bottom surface of the base 11, Lt; / RTI >

The tilting housing 41 is provided with two fluid movement lines (hereinafter, referred to as a first fluid movement line, a second fluid movement line, and a second fluid movement line) for supplying fluid from a hydraulic tank T provided in an excavator, Are spaced apart at a predetermined interval.

The fluid introduced into the first fluid transfer line 412 is driven by the first gear 43 provided in the tilting housing and then discharged through the second fluid transfer line 413 to the hydraulic tank T And the fluid introduced into the second fluid transfer line 413 is driven through the first fluid transfer line 412 after driving the second gear 44 and then reintroduced into the hydraulic tank T .

A plurality of bolt fastening holes H5 are formed on the outer circumferential surface of the rotary disk, and a plurality of bolt fastening holes H4 are formed on both sides of the tilting housing 41, And a fixing plate 42 having a plurality of bolt fixing holes H6 is formed at a position corresponding to the bolt fixing holes formed in the rotating circular plate so as to be rotated together with the rotating circular plate. A plurality of bolt fastening holes H7 are formed in a lower end portion of the fixing plate 42 at positions corresponding to a plurality of bolt fastening holes H3 formed in the housing 21 of the rotatable device, do.

That is, the tilting device 40 is configured such that one end of the upper end of the tilting housing 41 is bolted to the bottom surface of the base 11 through bolt fastening holes H2 and H4 in the longitudinal direction, And the lower end of the fixing plate 42 coupled to the side surface of the tilting housing 41 is bolted to the upper surface of the housing 21 of the rotating device through bolt fastening holes H7 and H3 in the width direction, And is detachably coupled to the device (20) and the second fastening portion (30).

A second thread 431 is formed on an outer circumferential surface of the first gear 43 to be engaged with the first thread 411 and a third thread 432 is formed on an inner circumferential surface of the first gear 43 in a direction opposite to the second thread.

When the fluid is introduced into the tilting housing through the first fluid transfer line 412, the first thread 431 is moved toward the first thread 411 while the second thread 431 is engaged with the first thread 411 do.

The second gear 44 is rotatably coupled to the rotary disc 416 at its both ends. The fourth gear 441 is engaged with the third thread 432 of the first gear, And is formed on the outer peripheral surface. The second gear 44 is rotated in the opposite direction of the first gear to rotate the second coupling part 30 in one direction when the first gear 43 is rotated by supplying fluid to the first fluid movement line 412, The fluid is supplied to the second fluid supply line and the first gear 43 is returned to its original position, the second coupling part 30 is tilted in the reverse direction.

The second coupling portion 30 is coupled to the fixing plate 42. The fixing plate 42 is coupled to the rotating plate and the rotating plate is coupled to the second gear 44, The second coupling part 30 is tilted in one direction or the opposite direction when the fluid is inputted / recovered through the second coupling part 30 or the second fluid transfer line 413, Tilting of the bucket 4 or the optional working device mounted on the bucket is performed.

The tilting device 40 can be detachably coupled between the first coupling part 10 and the rotatable device 20 so that only the rotating operation of the bucket 4 can be performed without a tilting device Or the tilting device 40 can be coupled between the first coupling part 10 and the rotatable device 20 so that both the rotating and tilting driving of the bucket 4 can be performed. Can be done. In addition, a purchaser who does not require a tilting function can purchase and use only the first fastening portion 10 and the rotating device 20, and if the tilting function is required in the future, the tilting device 40 can be further purchased Since it can be used after installation, it is excellent in economy and practicality.

Next, the present invention is directed to a crushing apparatus 50 (see FIG. 10) including a power transmitting unit 51, a first crushing unit 52, and a second crushing unit 53 so that the object can be cut and crushed And the like.

The power transmitting portion 51 includes a pair of hydraulic cylinders 511 provided along the longitudinal direction on the outer circumferential surfaces on both sides of the body of the second coupling portion and having a rod provided on the movable hook side and having a casing, A second fixing shaft 513 to be engaged with the hydraulic cylinder rods and a support bracket 514 that closely contacts the outer peripheral surface of the movable hook of the body, And a third fixed shaft 515 that is vertically coupled to both ends of the first fixed shaft and spaced apart from the second fixed shaft by a predetermined distance.

The first crushing part 52 includes a first upper plate 521 having one end hinged to the upper end of the first fixed shaft and the other end hinged to the upper end of the third fixed shaft, A first lower plate 522 hinged to the lower end of the shaft and hinged to the lower end of the third fixed shaft at the other end thereof and a second lower plate 522 formed between the first upper plate and the second lower plate, And a first crushing blade (523) coupled to the crusher and extending outward by a predetermined length.

Next, the second crushing unit 53 includes a second intermediate plate 531 hinged to the center of the second fixed axis, and a second intermediate plate 531 formed at the upper and lower ends of the second intermediate plate, A second crushing blade (532) hinged to the upper end of the fixed shaft and hinged to the upper end of the third fixed shaft at the other end and extending a predetermined length to the outside, a second crushing blade (532) hinged to the lower end of the second fixed shaft And a third crushing blade 533 hinged to the lower end of the fourth fixed shaft and having a predetermined length extended outwardly are integrally formed.

The first crushing blade 523 and the second crushing blade 532 and the third crushing blade 533 are separated from each other when the rod of each of the pair of hydraulic cylinders 511 is released, The object is cut and broken while rotating around the first and second fixed shafts 512 and 513. The present invention is advantageous in that it is possible to perform more various kinds of work by selectively attaching the crushing device 50 to the second fastening part 30. [

Next, the present invention relates to a method for controlling a fluid supplied from a hydraulic tank (T) in accordance with an electric signal transmitted from a main control box (80) for converting a driving command inputted to a joystick (70) A solenoid valve S for setting a moving direction and a hydraulic line L for supplying a fluid according to a direction set by the solenoid valve and passing the hydraulic fluid through the hydraulic motor or actuator and recovering the fluid to a hydraulic tank 60).

The hydraulic block 60 may include a solenoid valve S2 for rotating the rotating device 20 and a tilting solenoid valve S1 for tilting the tilting device 40. [ A bucket mounting solenoid valve S3 for moving the movable hook 33 to attach the bucket 4 to the second fastening part 30 and a bucket mounting solenoid valve S3 for operating the shredding device 50 for shredding operation A solenoid valve S4 and an optional solenoid valve S5 for driving an optional work device to remove and replace the bucket.

Referring to FIG. 12, when an operator inputs a drive command to the joystick 70, the main control box 80 converts the drive command input to the joystick into an electric signal and transmits the electric command to the hydraulic block 60.

The solenoid valve S in the hydraulic block sets the moving direction of the fluid supplied from the hydraulic pump P in accordance with the received electric signal, When the fluid is supplied, the attachment (for example, the excavator rotator of the present invention) mounted on the end of the clamper 1 is controlled according to the inputted command. That is, according to the present invention, when the driver drives the joystick 70, the solenoid valve S sets the moving direction of the fluid according to the input signal, and at the same time, the hydraulic pump P supplies the fluid in the predetermined direction .

In general, an excavator is configured to perform an operation of an attachment mounted on an arm by injecting or withdrawing fluid through a hydraulic hose. In recent years, attachments capable of implementing various operations have been popular, but complex hydraulic equipment is required for various operations. For example, if you want to attach an attachment that can be equipped with a tilting function and a rotatable function to a bucket, there are basically two hydraulic hoses mounted on the excavator, two hydraulic hoses for tilting the bucket to the left or right, There is an additional cost for additional mounting of the hydraulic hose because the hydraulic hose is required to rotate in the counterclockwise direction or the counterclockwise direction. Therefore, the wiring becomes complicated and the equipment becomes heavy, and the durability of the excavator is deteriorated. .

On the contrary, the present invention is characterized in that the hydraulic pressure supply line (L1) is connected to the hydraulic block on one side and connected to the hydraulic tank on the other side and supplies the fluid supplied through the hydraulic pump to a hydraulic motor or a hydraulic cylinder, A hydraulic recovery line (L2) for recovering the fluid that has passed through the hydraulic cylinder or the hydraulic motor to the hydraulic tank, and a total of two hydraulic lines. In the following example, a tilting device 30 is coupled between the first coupling part 10 and the rotatable device 20 according to an embodiment of the present invention to attach and detach a bucket 4, An excavator mounted on the clamper 1 has been described as an example.

For example, when the operator drives the joystick 70 to rotate the bucket 4 in the clockwise direction, the main control box 80 converts the drive command into an electric signal while the hydraulic pump P is driven, To the solenoid valve S2.

The rotating solenoid valve S2 sets a traveling direction of the fluid so that the hydraulic motor 24 rotates in the clockwise direction and the hydraulic pump P rotates in the direction set by the solenoid valve S2 for rotation, . The fluid in the hydraulic tank T is introduced through the hydraulic pressure supply line L1 to rotate the bucket 4 in the clockwise direction and then is returned to the hydraulic tank through the hydraulic pressure recovery line L2.

When the operator drives the joystick 70 to tilt the bucket 4 to the left, the hydraulic pump P is driven, and the main control box 80 converts the drive command into an electrical signal to generate a tilting solenoid valve S1 ). The tilting solenoid valve S1 sets the moving direction of the fluid so as to supply the fluid to the gear side which is operated when the bucket 4 is tilted to the left among the first gear or the second gear. The fluid in the hydraulic tank T is thrown through the hydraulic pressure supply line L1 to tilt the bucket to the left side and is then returned to the hydraulic tank through the hydraulic pressure recovery line L2.

As described above, the present invention can be applied to an optional operation device (not shown) mounted additionally after the bucket is rotated and tilted through the hydraulic block 60 including the main control box 80 and the plurality of solenoid valves, (Hydraulic hose), it is possible to reduce the additional installation cost of the hydraulic hose, and the problem that the wiring becomes complicated when a plurality of hydraulic hoses are installed, and the durability of the excavator is reduced due to heavy equipment Can be solved.

In addition, the main control box 80 according to the present invention stably controls a large-current circuit composed of a large-capacity hydraulic pump by the operation of a circuit constituted by the low-voltage meter constituted by the joystick, and protects the joystick 70 from overcurrent And a protection circuit 82 for suppressing a low back electromotive force generated when the inductive load of the relay circuit is turned off can be further provided.

14, it is possible to stably control a large-current circuit composed of a large-capacity hydraulic pump by the operation of the circuit constituted by the low-voltage meter constituted by the joystick, and the coil portion and the contact portion are electrically The relay circuit can be configured to protect the joystick from an overcurrent.

Further, it is preferable that the signal input from the joystick is configured to protect the switch button of the joystick by using a minus signal (-). In addition, when the inductive load of the relay is turned off, A back electromotive force is generated and a contact circuit is destroyed by the back electromotive voltage, so that a protection circuit for suppressing the back electromotive voltage is further provided.

Therefore, the relay circuit provided in the main control box transmits stable control signals to the hydraulic pump and the hydraulic block according to the driving signal input from the joystick, and is electrically insulated from the control circuit, thereby protecting the joystick from the overcurrent .

In addition, it is preferable that the relay circuit is further provided with a safety device by being provided with a speaker connected to a plurality of contacts and generating a warning sound or a flickering lamp.

According to the present invention as described above, the tilting device can be selectively mounted between the first coupling part and the rotating device, so that the tilting operation as well as the rotating operation of the bucket can be realized, There is an advantage that various work can be done.

1: clamper 2: first retaining ring
3: second retaining ring 4: bucket
10: first fastening part 11: base
12: first fixing pin 13: second fixing pin
20: Rotating device 21: Housing
22: Worm wheel 23: Worm
24: Hydraulic motor
30: second fastening part 31: body
32: first pin rod insertion groove 321:
33: Operation hook
40: tilting device
41: tilting housing 411: first thread
412: first fluid transfer line 413: second fluid transfer line
414: rotating disk
42: Fixing plate
43: first gear 431: second thread
432: Third thread
44: second gear 441: fourth thread
50: crushing device
51: Power transmission unit 511: Hydraulic cylinder
512: first fixed shaft 513: second fixed shaft
514: Support bracket 515: Third fixing shaft
52: first crushing section 521: first top plate
522: first lower plate 523: first crushing blade
53: second crushing section 531: second intermediate plate
532: second crushing blade 533: third crushing blade
60: Hydraulic block
70: Joystick 80: Main control box
S: Solenoid valve L: Hydraulic line
P: Hydraulic pump T: Hydraulic tank

Claims (5)

1. An excavator rotator for rotating an excavator, the rotator comprising:
A base 11 in the form of a rectangular plate having a predetermined thickness and a base 11 fixed to the first fixing ring 2 and the second fixing ring 3 of the clamper 1 mounted on the tip of the arm provided in the excavator, A plurality of bolt fastening holes H1 are formed in the width direction on both sides of the base and a plurality of bolt fastening holes H1 are formed in the base in the longitudinal direction, A first fastening part 10 formed with a hole H2 and engaged with the clamper;
And a plurality of bolt fastening holes H3 in the width direction on both sides of the bolt fastening holes H1 so as to correspond to the bolt fastening holes H1 formed on both sides of the base 11 so as to be removably engageable with the bottom surface of the first fastening portion 10. [ A worm wheel (22) rotatably installed in the housing; a worm (23) engaged with the worm wheel; and a hydraulic motor (24) for driving the worm A rotating device 20;
A body 31 coupled to a bottom surface of the worm wheel 22 and rotated together with a worm wheel, a first pin rod insertion groove (not shown) formed at one side of the body for receiving the first pin rod formed in the bucket 4 And a movable hook (33) provided on the other side of the body and rotatable through a cylinder and fixing a second pin rod formed on the bucket, wherein the movable hook (33) is coupled with the bucket to rotate the bucket A second fastening part (30) for allowing the first fastening part
A first fluid supply line and a second fluid return line for supplying and discharging fluid, and a first fluid supply line and a second fluid supply line, And a rotary disk having a plurality of bolt fastening holes H5 formed on an outer circumferential surface thereof and being rotatable about a bearing through a bearing, A tilting housing 41 in which a plurality of bolt fastening holes H4 are formed at positions corresponding to a plurality of bolt fastening holes H2 formed in a direction of a rotation axis of the rotary disk, A plurality of bolt fastening holes H6 are formed in the housing 21 so that the bolt fastening holes H6 are formed corresponding to the bolt fastening holes formed in the housing 21 and are detachably coupled to the rotatable device 20 at the lower end. On And a second screw thread engaging with the first screw thread is formed on an outer circumferential surface of the tilting housing and a second screw thread is formed on an inner circumferential surface of the tilting housing in a direction opposite to the second screw thread, A first gear 43 formed in the tilting housing so as to move along the first thread when the fluid is introduced into the tilting housing through the first fluid supply line, Is rotatably engaged with the rotary disk, and a fourth screw thread, which is engaged with the third screw thread of the first gear, is formed on the outer circumferential surface, and when the first gear is moved to one side, The second coupling portion is tilted in one direction, and when the fluid is introduced into the tilting housing through the second fluid supply line, the first gear moves in the other direction, Including; tilting device 40 comprises a second gear (44) for tilting in a direction
The first fastening part 10 and the rotating device 20 are provided with a plurality of bolt holes H1 formed on both sides of the base 11 in the width direction and a plurality of bolt holes H1 formed on both sides of the housing 21 Which is detachably coupled with the bolt coupling hole H3,
The tilting device 40 is selectively mounted between the first fastening part 10 and the rotatable device 20 so that the first fastening part 10 and the tilting device 40 can be moved in the same direction The tilting device 40 is detachably coupled to the tilting housing 41 by bolts through a plurality of bolt coupling holes H2 formed in the longitudinal direction and a plurality of bolt coupling holes H4 formed on the upper surface of the tilting housing 41, And the rotating device 20 are provided with a plurality of bolt fastening holes H7 formed at the lower end portion of the fixing plate 42 in the width direction and a plurality of bolt fastening holes H3 formed at both sides of the housing 21 in the width direction Wherein the bolts are detachably coupled to each other through bolts.
delete The method according to claim 1,
A pair of hydraulic cylinders 511 provided along the longitudinal direction on the outer circumferential surfaces on both sides of the body of the second fastening portion and provided with a rod on the movable hook side and a casing, A second fixed shaft 513 engaged with the respective hydraulic cylinder rods and a support bracket 514 tightly coupled to the movable hook side outer peripheral surface of the body, And a third fixed shaft (515) spaced apart from the second fixed shaft by a predetermined distance,
A first upper plate (521) having one end hinged to the upper end of the second fixed shaft and the other end hinged to the upper end of the third fixed shaft; a first upper plate (521) hinged to the lower end of the second fixed shaft A first lower plate 522 hinged to the lower end of the third fixed shaft, and a second lower plate 522 formed between the first upper plate and the second lower plate and hinged to the center of the third fixed shaft and extending a predetermined length outward A first crushing section 52 in which the first crushing blade 523 is integrally formed,
A second intermediate plate 531 hinged to the center of the second fixed shaft and a second intermediate plate 531 formed at the upper and lower ends of the second intermediate plate and having one end hinged to the upper end of the second fixed shaft, A second crushing blade 532 hinged to the upper end of the third fixed shaft and extending outward by a predetermined length, a second crushing blade 532 hinged to the lower end of the second fixed shaft 532 and a second end hinged to the lower end of the third fixed shaft 532, And a second crushing part 53 formed integrally with the third crushing blade 533, the crushing blade 533 having a predetermined length extending outwardly,
When the rod of the pair of hydraulic cylinders is pulled out, the first crushing blade, the second crushing blade and the third crushing blade rotate about the second fixed axis 513, respectively, so that the object is cut and crushed Wherein the crushing device (50) is detachably mountable to the second fastening part.
The solenoid valve according to claim 1, further comprising: a solenoid valve for setting a moving direction of a fluid supplied from a hydraulic tank according to an electric signal transmitted from a main control box for converting a driving command inputted to a joystick provided in the excavator into an electric signal, And a hydraulic line (L) including a hydraulic line (L) for supplying fluid to the hydraulic motor or the hydraulic cylinder according to the direction set by the solenoid valve and recovering the hydraulic fluid to a hydraulic tank Wherein the excavator rotates the excavator.
[5] The apparatus as claimed in claim 4, wherein the hydraulic block includes a solenoid valve for rotating the rotating device, a tilting solenoid valve for tilting the tilting device, A solenoid valve for bucket mounting for mounting the bucket, a solenoid valve for crushing operation for crushing operation of the crushing device, and a solenoid valve for an optional working device for driving an optional work device to be removed and replaced with a bucket Rotor for excavator.

Images