KR100256419B1 - A rotary angle sensing apparatus of a revolutionary instrument - Google Patents

Abstract

PURPOSE: A rotation angle detecting device is provide to protect from influence of external circumstance and to compensate mechanical error. CONSTITUTION: A rotation angle detect sensing device in a rotating instrument comprises an upper bracket(140) actuating by being connected to a boom(100); a center rotor shaft(340) fixed on an inside center portion of the upper bracket; a lower bracket(210) fixed on an arm(200); a sensor stator(330) mounted on a middle portion of the lower bracket; a journal B(131) sliding by being installed on a side of the upper bracket; a journal A(110) sliding by being mounted on the arm; and a connect plate(120) indirectly delivering rotating force by being engaged between the journal A and B. plural oilless metal(360) is inserted between the upper and lower brackets to remove vibration in operating and to maintain interval. Slide shafts(121,122) is installed on the journal A and B to vertically engage the connect plate so that the boom and the arm receive an error of mechanical influence of vertical and rotation directions by sliding in rotating.

Description

Rotating Angle Detection Device of Rotating Mechanism

The present invention relates to an accessory device for articulated industrial equipment, and more particularly, to an apparatus for detecting a rotation angle of a rotating mechanism for detecting a relative rotation angle of a joint part.

In general, in the joint apparatus applied to industrial equipment, the rotation angle detector which detects the relative rotation angle of each part decreases the degree of detection of the rotation angle by the mechanical tolerance of the connection part connecting and driving each arm, and the mechanical tolerance. The breakage of the detector is caused.

Therefore, in the related art, the link type structure is applied to reduce the influence of the mechanical tolerances of the rotation angle detection device in such a joint device.

However, such a link type structure can prevent damage of the rotation detector due to mechanical tolerances, but cannot influence the detection accuracy of the rotation angle due to mechanical tolerances.

In other words, when there is a mechanical error, if the position of the pin changes according to the load type, the link rotates and the detection angle at the same angle changes.

In addition, in the link structure, since the link rotation part is connected with the pin and the journal, the mechanical tolerance is generated to reduce the detection accuracy.

As the pin and journal parts wear out according to the usage of the equipment, the mechanical tolerance increases gradually and the detection accuracy decreases accordingly.

In addition, such a link structure method may cause damage due to increase in the number of parts and damage due to the assembly life, the life of the detector, the external shock and the vibration, thereby deteriorating reliability.

In particular, when the detection part of the detector is exposed to the outside, it is difficult to accurately detect due to corrosion and swelling of the detection part when it is not dustproof or moistureproof.

The present invention has been made in order to solve the various problems as described above, the object of the present invention is to provide a rotation angle detection device of a rotating mechanism to allow the above mechanical error to be self-compensated and protected from the influence of the external environment. have.

1 is a device embodiment to which the present invention is applied.

2 is a perspective view of the main portion of the installation state of the present invention.

3 is a cross-sectional view of the internal structure of the present invention.

* Explanation of symbols for main parts of the drawings

100: boolean 110: journal A

111: bushing bearing A 120: connecting plate

121: slide axis A 122; Slide axis B

130: journal B 131: bush bearing B

140: upper bracket 141: mounting bracket

142: annular protrusion rib 150: coupler

200: arm 210: lower bracket

220: fixed flange 230: plate

300: excavator 310: joint connection

320: rotation detector 330: sensor stator

340: sensor rotor shaft 350: bolt

360: Oilless Metal 370: V Seal

In order to achieve the above object, when the relative rotational movement between the arm and the arm is transmitted to the rotation angle detector, the journal part and the connection plate separate from the journal part each sliding to compensate for the mechanical error in the vertical direction and the horizontal (radius) direction are compensated for. It is connected by means of indirect transmission of rotational force, and the protection cover function of the rotational angle detection part and the brackets of both arms, which serve as the rotational force transmission function, allow the sliding contact part for relative rotational movement to be slid by the oilless metal, thereby reducing the relative mechanical error. And the lower connection part is sealed by the V seal to prevent contamination of the rotation angle detection part.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Each of the buoy 100 and the arm 200 which rotates relative to each other is provided with a rotation detector 320 at one side of the joint connector 310.

The rotation detector 320 detects the relative rotation angles of the buoy 100 and the arm 200 by the sensor stator 330 and the sensor rotor shaft 340 installed in the center of the rotation detector 320.

The sensor rotor shaft 340 is connected to the mounting table 141 protruding from the center of the upper bracket 140 by the coupler 150, the annular protruding rib 142 at a predetermined height inside the side wall of the upper bracket 140 Is formed and the journal B 130 is fixed to the outer side.

The journal B 130 is connected by the journal A 110 and the connecting plate 120 fixed to the buoy 100, wherein the slide shafts A 121 are formed perpendicular to each other at both ends of the connecting plate 120. And slide shaft B 122 are fitted.

On the other hand, the plate 230 and the sensor stator 330 are fixed to the inner side of the lower bracket 210 fixed to the arm 120 by the bolt 350, and the sensor stator is rotated when the arm 200 rotates. 330 was rotated together.

The fixing flange 220 is fixed to the upper end of the lower bracket 210 to prevent the detachment of the upper bracket 140 at the time of coupling to the bolt 350.

That is to prevent the departure by supporting the annular projection ribs 142 formed on the inner wall of the upper bracket 140.

In addition, a plurality of oilless metals 360, 361, 362, and 363 may be inserted between the upper bracket 140 and the lower bracket 210, and the V seal 370 may be inserted into a lower connection part contacting the outside. It was sealed.

Looking at the operation and effect of the present invention configured as described above is the rotation installed between each of the buoys 100 and the arm 200 to each other relative rotational movement in the equipment having a joint portion 310 of the various parts, including the excavator 300 The detectors 320 are connected to each other by the connection plate 120 so that the shock due to the mechanical error of each other is not transmitted directly to the rotation detector 320 is buffered.

That is, the mechanical error in the radial direction is corrected by the journal A 110 and the slide shaft A 121, and the mechanical error in the vertical direction is corrected by the journal B 130 and the slide shaft B 122.

As shown in FIG. 2 and FIG. 3, when the buoy 100 and the arm 200 are relatively rotated, the journal A 110 fixed to the buoy 100 is rotated together and the slide shaft A fitted thereto. As the connection plate 120 rotates, the rotation force is transmitted to the journal B 130 into which the slide shaft B 122 is inserted, thereby rotating.

At this time, the vibration and shock caused by the mechanical error are corrected while sliding in the journal A 110 and the journal B 130 to which the slide shaft A 121 and the slide shaft B 122 are respectively connected.

The rotational force transmitted to the journal B 130 is relatively rotated with the mounting bracket 141 and the coupler 15 and the sensor rotor shaft 340 connected thereto by the upper bracket 140.

A plurality of oilless metals 360 are inserted between the upper bracket 140 and the lower bracket 210 to remove mutual vibrations during precise interval maintenance and operation.

In addition, the V-seal 370 is fitted to the lower connection portion in contact with the outside to completely block the dust or moisture from the outside to prevent damage to the sensor unit.

As described above, in the present invention, since the sensor unit, which is a rotation angle detection device, is surrounded by the upper bracket, there is no damage due to external influences, and in particular, relative movements of the pour and the arm are formed on both slide shafts of the connecting plate formed in the vertical direction. Since the rotational force is transmitted in an indirect manner by being connected to the journal part, respectively, the mechanical error in the vertical direction and the radial direction is corrected, and the external force is not applied to the sensor part.

Therefore, even when the joint part of the equipment is worn out for a long time and the impact vibration is severe, the rotation angle detection device is not greatly impacted, so it is a useful technology that facilitates the manufacture of a very safe and durable equipment.

Claims (4)

In the rotation angle detection device is fixed to the boolean 100 and the arm 200 for each relative rotational movement to detect the relative rotation angle, the sensor rotor shaft 340 is fixed to the inner central portion and connected to the boolean 100 An upper bracket 140 which is operated; A lower bracket 210 having a sensor stator 330 at a central portion thereof and fixed to the arm 200; A journal B 131 installed on one side of the upper bracket 140 and sliding; A journal A 110 installed on the arm 200 and sliding; Rotation angle detection device of the rotating mechanism, characterized in that the operation is provided with a connection plate 120 is connected between the journal A, B (110) (131) to indirectly transmit the rotational force. The boom 100 according to claim 1, wherein the journals A, B (110) 131 are provided with slide shafts A, B (121), 122, and the connecting plates 120 are vertically coupled to each other. And rotational motion of the arm 200, the rotation angle detection device of the rotating mechanism, characterized in that to accommodate the error in the mechanical effect in the vertical direction and the radial direction of rotation. According to claim 1, Between the upper bracket 140 and the lower bracket 210, a plurality of oilless metal 360 is inserted and installed to maintain a precise gap and mutual vibration during operation, the direct contact with the outside Rotation angle detection device of a rotary mechanism, characterized in that the V seal 370 is fitted to the lower connection portion. According to claim 1, The annular protrusion ribs 142 formed on the inner wall of the upper bracket 140 is supported by a fixing flange 220 is coupled to the upper end of the hub bracket 210 by a bolt 350, the upper bracket 140 Rotation angle detection device of the rotating mechanism, characterized in that to prevent departure.