JPH09210603A - Device for mounting sensor for degree of vertically - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for mounting a sensor for degree of verticality to be equipped on a working vehicle with an arm which can be operated vertically. SOLUTION: A cylinder hole center provides a cylindrical body 32 in the same direction as the pin axis center of a pin connection part near the base part of an arm connected to the boom tip part of a working attachment and a mounting seat plate 36 for mounting a sensor 35 for the degree of verticality is formed in a flex surface shape or curved surface shape along the arc of the inner-periphery surface of the cylindrical body 32. The sensor 35 for the degree of verticality is fixed and mounted to the center of the mounting seat plate 36, a plurality of long holes 45 for bolt in a direction crossing the cylindrical hole center of the cylindrical body 32 are punched on the mounting seat plate 36, bolts 40 and 41 are inserted through the long holes 45 for bolt, and the above mounting seat plate 36 and the inner-periphery surface part of the cylindrical body 32 are clamped via an insulator for buffering.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a verticality sensor mounting device which can be mounted on a construction machine such as a hydraulic excavator or a work attachment of a work vehicle.

[0002]

2. Description of the Related Art FIG. 8 is a side view of a coal shelving machine 1 which is a conventional work vehicle. The coal shelving machine 1 is used for scraping off coal shelves remaining and fixed on the inner wall surface between the keel and the frame bone in the hold after the ship that has transported the coal unloads the coal. It is a work vehicle to perform. In the figure, 2 is a lower traveling body of the coal shelving machine, 3 is an upper revolving structure provided above the lower traveling body 2, 4
Is a cab mounted on the upper revolving structure 3, 5 is a water tank,
6 is a work attachment mounted on the front part of the upper swing body 3, 7 is a boom of the work attachment 6, 8 is a telescopic arm, 9 is a spatula tool (also referred to as a spatula tool), and 10 is a nozzle for watering. In the coal shelving machine 1 shown in FIG. 8, the work attachment 6 is attached to the front part of the upper swing body 3, and the spatula tool 9 is attached to the tip of the work attachment 6 to perform the coal shelving work. .

[0003]

In the coal shelving machine 1 of the prior art shown in FIG. 8, the telescopic arm 8 is formed in a divided form of the base side arm 11 and the slide side arm 12, and the telescopic cylinder 13 is expanded and contracted. As a result, the slide arm 12 is slid along the guide rail 14 of the base arm 11 in the longitudinal direction, and the spatula tool 9 scrapes off the coal rack.
However, since the longitudinal direction of the telescopic arm 8 (the same as the longitudinal direction of the guide rail 14) cannot be set to be vertical in this coal shelving machine 1, a verticality sensor for detecting the vertical state is not attached. It is an object of the present invention to provide a verticality sensor mounting device equipped on a work vehicle equipped with an arm that can be operated in a vertical state.

[0004]

According to the present invention, a boom, an arm, and a work tool are sequentially connected to a front portion of a vehicle body so as to be rotatable in the front-rear direction, and are driven by a boom cylinder and an arm cylinder, respectively. In the vehicle, a verticality sensor that detects the vertical state of the arm is installed near the pin connection part that connects the boom tip part and the arm base end part, and the reference vertical line of the verticality sensor and the actual weight In order to match the vertical line of the above, the mounting angle of the verticality sensor is adjustable. In that case, near the base of the arm connected to the boom tip, a cylindrical body whose cylindrical hole center is in the same direction as the pin axis of the pin coupling part is provided, and a mounting seat plate for mounting the verticality sensor is installed. It is formed in a curved surface shape or a curved surface shape along the arc of the inner peripheral surface of the cylindrical body, and the verticality sensor is fixedly attached to the central portion of the mounting seat plate, and the cylindrical hole of the cylindrical body is mounted on the mounting seat plate. Make a plurality of long holes for bolts in the direction orthogonal to the center, insert the bolts into the long holes for bolts, and tighten the mounting seat plate and the inner peripheral surface of the cylindrical body with a buffer insulator. I chose That is, in the present invention, the bolt hole of the mounting seat plate of the curved surface shape or the curved surface shape that is tightened along the arc of the inner peripheral surface of the cylindrical body is formed in the slot for the bolt in the direction orthogonal to the cylindrical hole center of the cylindrical body. Therefore, when aligning the reference vertical line of the verticality sensor fixedly attached to the center of the above-mentioned mounting seat plate with the actual vertical line of the weight, loosen the bolt and place the mounting seat plate in the long hole for the bolt. It can be manually adjusted for longitudinal movement. Further, since the cushioning insulator is provided between the mounting seat plate and the inner peripheral surface of the cylindrical body, it is possible to mitigate the impact of the work attachment during the work on the verticality sensor.

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of a coal shelving machine 15 provided with the verticality sensor mounting device of the present invention. In the figure, 16 is a lower traveling body of the coal shelving machine 15, 17 is an upper rotating body, 18 is a driver's cab mounted on the upper rotating body 17, 19 is a water tank, and 20 is an upper rotating body 17.
Work attachment attached to the front portion of the work attachment, 21 is a boom of the work attachment 20, 22 is a telescopic arm, 23 is a base side arm of the telescopic arm 22, 24 is a slide side arm, and 25 is a base side arm 23.
Guide rail, 26 is a telescopic cylinder, 27 is a boom cylinder, 28 is an arm cylinder, 29 is a spatula tool cylinder, 30 is a spatula tool, 31 is a nozzle for watering,
32 is a cylindrical body provided near the base of the base side arm 23, 3
Reference numeral 3 denotes a pin connecting portion between the tip portion of the boom 21 and the base portion of the telescopic arm 22, and 34 denotes a pin of the pin connecting portion 33.
FIG. 2 is an enlarged view of a portion A in FIG. In the figure, 35 is a verticality sensor provided inside the cylindrical body 32, 36 is a mounting seat plate for mounting the verticality sensor 35, and 37 is a vertical indicator weight gauge mounting plate not related to the verticality sensor mounting device. is there. FIG. 3 is a view as seen from BB in FIG. 2, but a vertical indicator weight gauge 38 for the driver's visual observation is attached to the plate 37. FIG. 4 is a view showing the verticality sensor mounting device viewed from CC in FIG. In the figure, 39 is a harness for outputting a signal detected by the verticality sensor 35, and 40, 4
Reference numeral 1 is a bolt, 42 is an insulator, and 43 is an insulator mounting bolt for fixing the insulator 42 to the cylindrical body 32. FIG. 5 is a plan view of the mounting seat plate 36 shown in FIG. In the figure, 44 is a bolt hole for the bolt 40 shown in FIG. 3, and 45 is a long hole for the bolt through which the bolt 41 is inserted. FIG. 6 is a front view of the insulator 42 shown in FIG. In the figure, 46 is a bolt hole for the bolt 40 shown in FIG. FIG. 7 is a bottom view seen from D in FIG.

Next, the construction of the verticality sensor mounting device of the present invention will be described with reference to FIGS. In the present invention, the boom 2
1. Near the base of the base-side arm 23 connected to the tip end, the cylindrical hole center OO (shown in FIG. 3) is the same as the pin 34 shaft center of the pin coupling portion 33 (shown in FIGS. 1 and 2). Direction cylinder 3
2 (the material is steel pipe), and the verticality sensor 35
The mounting seat plate 36 for mounting is formed in a curved surface shape along the circular arc of the inner peripheral surface of the cylindrical body 32, and the verticality sensor 35 is fixed to the central portion of the mounting seat plate 36 with bolts 40 (shown in FIG. 4). , And a plurality of bolt holes 45 (shown in FIG. 5) in the direction orthogonal to the cylinder hole center OO of the cylindrical body 32 are opened in the mounting seat plate 36, and the bolt holes 45 are formed. To bolt 4
1 (shown in FIG. 4), and the mounting seat plate 36 and the inner peripheral surface portion of the cylindrical body 32 via a buffer insulator 42 (using a rubber material having elasticity), a bolt 41 and an insulator. It is configured to be tightened with the mounting bolt 43.

Next, the operation of the verticality sensor mounting device of the present invention will be described. According to the present invention, the bolt hole of the bent seat mounting plate 36 that is tightened along the arc of the inner peripheral surface of the cylindrical body 32 is formed into the elongated slot 45 for the bolt in the direction orthogonal to the cylinder hole center OO of the cylindrical body 32. Since it is formed, the reference vertical line V-V of the verticality sensor 35 fixedly attached to the central portion of the attachment seat plate 36.
When aligning (shown in FIG. 4) the actual vertical line of the hanging thread (not shown) with the weight hanging, the bolt 41
The mounting seat plate 3 with the nut 47 (shown in FIG. 4) loosened
6 to move in the longitudinal direction of the bolt hole 45,
It can be adjusted manually. Therefore, the guide rail 25 of the telescopic arm 22 (see FIG.
When it is desired to attach the verticality sensor 35 so that the verticality sensor 35 can detect the vertical state with certainty, the hanging thread (indicated in the figure) The verticality sensor 35 attached to the telescopic arm 22 in that state is operated by operating the arm cylinder 28 (shown in FIG. 1) so as to be exactly parallel to the vertical line of FIG. The mounting angle may be adjusted to detect the vertical. Further, in the present invention, since the cushioning insulator 42 is provided between the mounting seat plate 36 and the inner peripheral surface portion of the cylindrical body 32, the impact during the work of the work attachment 20 acts on the verticality sensor 35. Can be alleviated.

[0008]

According to the present invention, the bolt holes of the bent or curved mounting seat plate that is tightened along the arc of the inner peripheral surface of the cylindrical body are formed in the lengths for bolts in the direction orthogonal to the cylindrical hole center of the cylindrical body. Since it is formed in the hole, when the reference vertical line of the verticality sensor fixed and attached to the central part of the above-mentioned mounting seat plate is made to coincide with the actual vertical line by the weight, the mounting seat plate should be bolted with the bolt loosened. It can be manually adjusted to move in the longitudinal direction of the slot. Therefore, if the vertical guide rail of the telescopic arm is in the correct vertical state and you want to attach the verticality sensor so that the verticality sensor can detect the vertical state, you can actually hang the weight. Operate the arm cylinder so that it is exactly parallel to the vertical line of the hanging thread, maintain its vertical posture, and set the attachment angle so that the verticality sensor attached to the telescopic arm in that state detects vertical. Should be adjusted. Further, in the present invention, since the cushioning insulator is provided between the mounting seat plate and the inner peripheral surface portion of the cylindrical body, it is possible to reduce the impact of the work attachment during the work on the verticality sensor. You can Therefore, in the verticality sensor mounting device of the present invention, the reference vertical line can be accurately and easily matched with the actual vertical line by the weight, and the maintainability of the verticality sensor against vibration, shock, etc. can be improved. it can.

[Brief description of drawings]

FIG. 1 is a side view of a coal shelving machine equipped with a verticality sensor mounting device of the present invention.

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

FIG. 3 is a diagram viewed from BB in FIG. 2;

FIG. 4 is a diagram showing a verticality sensor mounting device viewed from CC of FIG.

5 is a plan view of the mounting seat plate shown in FIG. 4. FIG.

FIG. 6 is a front view of the insulator shown in FIG.

FIG. 7 is a bottom view seen from D in FIG.

FIG. 8 is a side view of a coal shelving machine which is a conventional work vehicle.

[Explanation of symbols]

 6,20 Work attachment 7,21 Boom 8,22 Telescopic arm 11,23 Base side arm 12,24 Sliding side arm 13,26 Telescopic cylinder 14,25 Guide rail 28 Arm cylinder 32 Cylindrical body 33 Pin coupling part 34 Pin 35 Verticality sensor 36 Mounting base plate 40, 41 Bolt 42 Insulator 45 Slot for bolt

Claims (4)

[Claims] 1. A work vehicle in which a boom, an arm, and a work tool are sequentially rotatably connected to a front portion of a vehicle body in a front-rear direction, and driven by a boom cylinder and an arm cylinder, respectively. A verticality sensor that detects the vertical state of the arm is provided near the pin coupling part that connects the base end, and the reference vertical line of the verticality sensor and the actual vertical line of the weight are matched. A verticality sensor mounting device, characterized in that the mounting angle of the verticality sensor is adjustable. 2. The verticality sensor mounting device according to claim 1, wherein the cylindrical hole center is in the same direction as the pin axis of the pin coupling part near the arm base connected to the boom tip. A verticality sensor mounting device, characterized in that the verticality sensor is mounted inside the cylindrical body. 3. The verticality sensor mounting device according to claim 1 or 2, wherein the mounting seat plate on which the verticality sensor is mounted is bent or curved along an arc of an inner peripheral surface of the cylindrical body. It is formed in a planar shape, and the verticality sensor is fixedly attached to the central portion of the mounting seat plate, and a plurality of slotted holes for bolts are formed in the mounting seat plate in the direction orthogonal to the cylinder bore center of the cylindrical body. A verticality sensor mounting device, characterized in that a bolt is inserted through the elongated hole for the bolt and the mounting seat plate is fastened to the inner peripheral surface of the cylindrical body. 4. The verticality sensor mounting device according to claim 3, wherein a cushioning insulator is provided between the mounting seat plate and the inner peripheral surface portion of the cylindrical body. Vertical sensor mounting device.