JP2591986Y2 - Assembling structure of angle sensor device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an assembling structure of an angle sensor device for a working machine mainly mounted on a construction machine such as a hydraulic shovel, a working vehicle, or the like.

[0002]

2. Description of the Related Art Conventionally, in a hydraulic excavator (not shown), a boom, an arm, and a work tool are sequentially connected to a front portion of an airframe via connecting pins, and an angle sensor device is provided for the pin connecting portion. Then, the rotation angle of the boom, the arm or the like is detected to control the movement of the work machine.

[0003]

The angle sensor is fixed to a pin joint such as a boom or an arm by tightening a plurality of bolts. The angle sensor itself is composed of a plurality of parts, and the parts are mutually assembled with a plurality of bolts. In the angle sensor device of the related art, the plurality of bolt holes and the corresponding screw holes are set at the same interval with a predetermined pitch dimension, so that the angular positions of the plurality of bolt holes and the corresponding screw holes are set. Was mistakenly mounted or assembled.
For this reason, even if the sensor axis of the angle sensor can rotate 360 °, angle detection may not be performed accurately. An object of the present invention is to provide an assembling structure of an angle sensor device that can solve the above-mentioned problems.

[0004]

A second member is rotatably attached to a first member for a working machine mounted on a construction machine via a connecting pin, and the first member is either of the first member or the second member. An angle sensor device in which an angle sensor is fixed to one of the first and second members to detect a relative angle of the second member to the first member, wherein a mounting surface portion of the angle sensor and a circumference of the same center and the same radius of the mounting surface portion. It has a plurality of tightening bolt holes drilled on the top, wherein the plurality of tightening bolt holes have at least one other tightening bolt hole except for at least one tightening bolt hole. Clamps perforated on the mounting surface portion are provided on the circumference of the angle sensor mounting seat on the first member or the second member side on which the mounting surface portion is mounted. Screws at the positions corresponding to the mounting bolt holes I was bored. Alternatively, a second member is rotatably attached to a first member for a working machine mounted on a construction machine via a connecting pin, and the first member and the second member are connected to each other.
In an angle sensor device in which an angle sensor is fixed to one of the members and the relative angle of the second member to the first member is detected, at least one of a plurality of components constituting the angle sensor Of a plurality of tightening bolt holes drilled on the circumference of the same center and the same radius of the tightening surface portion of one part, except for at least one bolt hole, the other bolt holes have a predetermined pitch dimension. The mounting surface of the other part to which the tightening surface of the part is assembled corresponds to a plurality of tightening bolt holes drilled in the tightening surface of the part. Screw holes were drilled at each position.

[0005]

When the angle sensor having the mounting structure of the present invention is mounted on the angle sensor mounting seat of the pin connecting portion, if the angular position is incorrectly positioned, the angle sensor is opened in the mounting surface of the angle sensor. Among the plurality of bolt holes, the screw holes formed in the member on the angle sensor mounting side corresponding to the bolt holes with different pitch dimensions do not match. Therefore, since the bolt cannot be tightened to the bolt hole, it can be recognized that the positioning angle is wrong. Also, when assembling the angle sensor itself in the present invention, the tightening surface of one part is incorrectly positioned with respect to the mounting seat of the other part, or the one part is incorrectly turned upside down. When the positioning is performed, among the plurality of bolt holes drilled in the tightening surface of one part, the screw holes drilled in the mounting seats of the other parts corresponding to the bolt holes at intervals of different pitch dimensions. Will not match. Therefore, since the bolt cannot be tightened to the above-mentioned bolt hole, it is possible to recognize that the positioning angle is wrong, or that the positioning of the front and back of one part is wrong.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows the angle sensor device 1 of the present invention.
It is a principal part side view which shows the working machine 4 of the hydraulic shovel provided with 2,3. In the drawing, reference numeral 5 denotes a revolving frame which is a part of the body of a hydraulic shovel, 6 denotes a rear boom among components of the work machine 4, 7 denotes a front boom, 8 denotes an upper boom, 9 denotes an arm, and 10 denotes a bucket as a work tool. , 11
Denotes a boom cylinder, 12 denotes an arm cylinder, and 13 denotes a bucket cylinder. FIG. 2 is an enlarged view of a portion A in FIG. In the figure, reference numeral 14 denotes a turning frame 5 and a rear boom 6.
A pin coupling portion with the base end portion, 15 a coupling pin of the pin coupling portion 14, 16 an angle sensor of the angle sensor device 1, 1
Reference numeral 7 denotes a lever of the angle sensor 16, and reference numeral 18 denotes a rod. FIG. 3 is a side view of the angle sensor 16. In the figure, 19 is a body plate of the angle sensor 16, and 20 is a bolt for tightening. The plurality of bolts 20 are all given the same reference numerals for convenience of explanation. FIG. 4 is a cross-sectional view of FIG.
It is sectional drawing. In the figure, reference numeral 21 denotes an angle sensor mounting seat of the rear boom 6, 19 denotes a body plate of the angle sensor 16, 22 denotes an outer cylinder, 23 denotes a sensor rotor, and 17 denotes a lever.

Next, FIG. 5 is a view showing the angle sensor mounting seat 21 of the rear boom 6 as viewed from the line CC in FIG. FIG. 6 is a diagram showing the body plate 19 viewed from the line DD in FIG. FIG. 7 is a cross-sectional view of the outer cylindrical portion 22 as viewed from EE in FIG. FIG. 8 is a diagram illustrating the sensor main body 23 as viewed from FF in FIG. FIG. 9 is a view showing the lever 17 as viewed from the line GG in FIG.

Next, the assembling structure and operation of the angle sensor device 1 (which is a representative example of the angle sensor devices 1, 2 and 3) of the present invention will be described with reference to FIGS. One of a plurality of bolt holes 24 drilled in the mounting surface portion A (shown in FIGS. 6 and 4) of the body plate 19 of the angle sensor 16 (a symbol for distinguishing the one bolt hole). 25) except for the bolt holes 24 having a predetermined pitch dimension p.
1 (a pitch circle diameter passing through the center of each of the plurality of bolt holes 24 is d1, and a pitch angle between adjacent bolt holes 24 and 24 is an angle a), and one bolt removed and removed. The hole 25 has an interval l1 different from the predetermined pitch dimension p1.
(The pitch angle between the bolt hole 25 and the nearest adjacent bolt hole 24 is an angle b.) The hole is drilled, and the angle sensor mounting seat portion 21 of the rear boom 6 on which the angle sensor 16 is mounted. 24 'and 25' (shown in FIG. 5) are formed at positions corresponding to the bolt holes 24 and 25 formed in the mounting surface portion a of the body plate 19, respectively. Thus, when the angle sensor 16 is mounted on the angle sensor mounting seat 21 of the rear boom 6 and the angular position is incorrectly positioned, a plurality of bolt holes 24 and 25 formed in the mounting surface portion A of the body plate 19. One of the bolt holes 25 does not correspond to the corresponding screw hole 25 ′ formed in the rear boom 6. Therefore, since the bolt 20 cannot be tightened to the one bolt hole 25, it is possible to recognize that the positioning angle is wrong.

Further, in the present invention, one of a plurality of components (the body plate 19, the outer cylinder 22, the sensor body 23, the lever 17, etc. shown in FIG. 4) constituting the angle sensor 16, for example, One of a plurality of bolt holes 26 (shown in FIGS. 9 and 4) formed in a tightening surface portion B (shown in FIGS. 9 and 4) of the lever 17 (representative example). Except for the bolt holes 26 except for a predetermined pitch dimension P3 (a plurality of bolt holes 2).
6, the pitch circle diameter passing through the center of each bolt hole is d3, and the pitch angle between adjacent bolt holes 26 and 26 is an angle a). A sensor for setting the interval l3 different from the dimension p3 (the pitch angle between the bolt hole 27 and the nearest adjacent bolt hole 26 is an angle b) and drilling the hole, and assembling the tightening surface portion b of the lever 17 The mounting seat 28 of the main body 23 (FIG. 8)
4 and FIG. 4), 26 ′ and 27 ′ (shown in FIG. 8) are formed at positions corresponding to the bolt holes 26 and 27 formed in the tightening surface portion b of the lever 17, respectively. . Thus, when the lever 17 is mounted on the mounting seat 28 of the sensor main body 23, if the angular position is incorrectly positioned, or if the lever 17 is incorrectly positioned on both sides, the tightening surface portion of the lever 17 The screw hole 27 ′ formed in the sensor body 23 does not correspond to one of the plurality of bolt holes 26 and 27 formed in the sensor body 23. Therefore, since the bolt 20 cannot be tightened to the one bolt hole 27, it can be recognized that the positioning angle is wrong or the positioning of the lever 17 on the front and back is wrong.

[0010]

According to the angle sensor device of the prior art, a plurality of bolt holes and corresponding screw holes are formed at a predetermined pitch in a mounting portion of the angle sensor with respect to the pin connection portion and a component mounting portion of the angle sensor itself. The same spacing is set in the dimensions. For this reason, the angle sensor may be incorrectly attached to the angle sensor, or the angle sensor components and the front and back may be incorrectly assembled. However, according to the present invention, when the angle sensor is mounted on the angle sensor mounting seat of the pin connecting portion, if the angular position is incorrectly positioned, the pitch dimension of the plurality of bolt holes drilled in the mounting surface of the angle sensor is reduced. The screw holes formed in the member on the angle sensor mounting side corresponding to one of the bolt holes at different intervals do not match. Therefore, since the bolt cannot be tightened to the one bolt hole, it can be recognized that the positioning angle is wrong. Also, when assembling the angle sensor itself in the present invention, the tightening surface of one part is incorrectly positioned with respect to the mounting seat of the other part, or the one part is incorrectly turned upside down. When the positioning is performed, among the plurality of bolt holes drilled in the tightening surface of one part, the screw holes drilled in the mounting seats of the other parts corresponding to the bolt holes at intervals of different pitch dimensions. Will not match. Therefore, since the bolt cannot be tightened with respect to the one bolt hole, it is possible to recognize that the positioning angle is wrong or that the positioning of the front and back of one part is wrong. Therefore, in the angle sensor device having the mounting structure of the present invention, erroneous mounting of the angle sensor and erroneous mounting of the components can be prevented, and the accuracy of the mounting can be achieved.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a working machine provided with an angle sensor device of the present invention.

FIG. 2 is an enlarged view of a portion A in FIG.

FIG. 3 is a side view of the angle sensor according to the present invention.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is a view showing the angle sensor mounting seat of the rear boom as viewed from CC in FIG. 4;

FIG. 6 is a view showing the body plate as viewed from DD in FIG. 4;

FIG. 7 is a cross-sectional view of the outer cylindrical portion viewed from EE in FIG. 4;

FIG. 8 is a view showing the sensor main body viewed from FF in FIG. 4;

FIG. 9 is a view showing the lever as viewed from GG in FIG. 4;

[Explanation of symbols]

 1, 2, 3 Angle sensor device 4 Work machine 6 Rear boom 14 Pin connecting portion 16 Angle sensor 17 Lever 19 Body plate 20 Bolt 21 Angle sensor mounting seat 22 Outer cylinder 23 Sensor body 24, 25, 26, 27 bolt Hole 24 ', 25', 26 ', 27' Screw hole 28 Mounting seat

Claims (2)

(57) [Scope of request for utility model registration] 1. A second member is rotatably attached to a first member for a working machine mounted on a construction machine via a connecting pin, and an angle is attached to one of the first member and the second member. the sensor is fixed, the angle sensor device to detect the relative angle with respect to the first member of the second member, and the attachment surface portion of the angle sensor, of the mounting surface portion
For multiple tightening drilled on the same center and same radius circumference
Having bolt holes, bolt holes for with the plurality of clamping, open at intervals of a predetermined pitch size other bolt holes for fastening with the exception of the bolt holes for with at least one clamping on the circumference the puncture,
The first member or the first member to which the mounting surface portion is mounted
An angle sensor, wherein a screw hole is formed in a position corresponding to a tightening bolt hole formed in the mounting surface with respect to an angle sensor mounting seat on the two members. Device assembly structure. 2. A first member for a working machine mounted on a construction machine, wherein a second member is rotatably mounted via a connecting pin, and an angle is provided to one of the first member and the second member. In an angle sensor device that fixes a sensor and detects a relative angle of the second member to the first member,
A circle having the same center and the same radius of the tightening surface portion of at least one of a plurality of parts constituting the angle sensor.
Among the plurality of bolt holes for fastening which is perforated in on the circumference, and perforated in the other bolt holes except at least one bolt hole at intervals of a predetermined pitch size, also surface with the component of the fastening A screw hole is drilled at a position corresponding to a plurality of tightening bolt holes drilled in a tightening surface portion of the part with respect to a mounting seat part of another part to be assembled. Angle sensor assembly structure.