KR20120131132A - Level measuring equipment of excavator - Google Patents

Abstract

PURPOSE: A device for measuring a level of an excavator is provided to directly measure height while a driver operates excavates without a surveying engineer, thereby easily measuring a height difference between an excavated surface and a reference point. CONSTITUTION: A device for measuring a level of an excavator comprises a base(10), a tilting member(20), a laser distance measuring unit(30), and an angle measuring unit(40). The base is joined to a mounting member installed in an excavator body to be rotated. The tilting member is installed in between the base and mounting member, thereby rotating the base with respect to the body. The tilting member maintains a rotated state of the base and returns the base to an initial state before the rotation. The laser distance measuring unit measures a distance between the base and a first point on the ground which becomes a proceeding standard. The angle measurement unit measure an angle which the base and first point are formed based on the ground when the laser distance measuring unit measures the distance.

Description

Level measuring equipment of excavator

The present invention relates to a level measuring device of an excavator, the monitor is installed in the driver's seat the measurement data detected by the laser distance measuring means and the angle measuring means installed in the excavator when the flat work, pipe dig, surface work, etc. using the excavator The present invention relates to an excavator level measuring apparatus capable of easily carrying out various tasks by displaying digital values through the display.

In general, an excavator includes a cab and a driving wheel, the main body capable of rotating the machine by a driver's operation, a boom rotatably connected to the main body, an arm rotatably connected to the end of the boom, and Consists of a bucket fixed to the end. Looking at the excavation work of such an excavator, the angle of rotation by the cylinder arranged in the joint portion of the body and the boom, the joint portion of the boom and the arm, the joint portion of the arm and the bucket while the digging operation proceeds by the bucket.

When you plan to ground the ground using an excavator, you need to repeat the height of the ground frequently within a certain section so that the excavator driver can perform the flat work without a hitch. As a team, the survey assistants who move the (reference) and the scale bar for surveying must survey the work area, direction, and height of the ground continuously, especially in the rain, sewage pipe and road construction. And when it is necessary to backfill, the height of each section should be calculated and marked on the ground.

In this conventional technique, the surveyor and the survey assistant must calculate and mark each section using spray or paint, and the excavator driver must stop the work during the survey and work while looking down from the ground. Because the work is cumbersome, the surveying and the interval showing a large difference in height has a problem that needs to be reworked.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an excavator level measuring device capable of directly measuring the height while the driver proceeds to the excavation work even without a surveying assistant measuring the height of the work section. .

An apparatus for measuring a level of an excavator according to the present invention for achieving the above object is a base rotatably coupled to a mounting member installed on an excavator body, and installed between the base and the mounting member to the base relative to the body. Tilting means for causing the base to be rotated, maintaining the rotated state, and returning the base to its initial state before rotation, and between the base and the first point on the ground that is the work criterion. And a laser distance measuring unit measuring a distance of the laser beam measuring unit, and an angle measuring unit installed on the base to measure an angle formed by the first point and the base with respect to the ground when measuring the distance of the laser distance measuring unit.

The distance information between the first point and the base measured by the laser distance measuring unit and the angle information between the first point and the base measured by the angle measuring unit are based on the first point. A central processing unit for calculating the height information of the base, and a display unit for displaying the distance information measured by the laser distance measuring unit, the angle information measured by the angle measuring unit and the height information of the base calculated by the central processing unit, respectively Equipped.

The tilting means includes a driven gear installed to surround a portion of the upper part of the base, a main gear that is fixed to the base and interlocked with the driven gear and rotates the main gear, and the motor. It is installed at the lower end of the base and the electromagnet to prevent the base is rotated at a predetermined angle so that when the motor and the electromagnet is not driven to return the vertical direction of the base in a direction parallel to the vertical direction And a weight member, wherein the electromagnet is fixedly installed in the hollow penetrating between the upper front surface and the rear surface of the base, and is installed adjacent to the fixed shaft inserted in the hollow. Close to the fixed shaft to fix the base and stop supply of current. It is installed to maintain the state spaced apart from the fixed shaft by a predetermined distance.

According to the level measuring device of the excavator according to the present invention, the excavator driver can directly measure the height while the operation proceeds without the surveying engineer and the survey assistant for measuring the height of the work zone and can easily know the height difference from the reference point There is an advantage that can work precisely.

1 is a perspective view showing a level measuring device of an excavator according to the present invention,
Figure 2 is an excerpt perspective view of the base and the tilting means of the level measuring device of the excavator shown in Figure 1,
3 is a perspective view showing an operating state of the level measuring device of the excavator shown in FIG.
Figure 4 is a perspective view showing another embodiment of the tilting means of the components of the level measuring device of the excavator shown in Figure 1,
5 is a perspective view showing an operating state of the tilting means of the components of the level measuring device of the excavator shown in FIG.
6 is a partial cutaway perspective view showing that the level measuring device of the excavator according to the present invention is installed on the outside of the excavator body,
7 is a cross-sectional view for explaining a process of measuring the height of the working surface using the level measuring device of the excavator shown in FIG.
8 is a cross-sectional view for explaining a process of measuring the depth of the working surface using the level measuring device of the excavator shown in FIG.
FIG. 9 is a perspective view illustrating a process of measuring a deviation distance of an excavator from a work reference line using the level measuring device of the excavator shown in FIG. 1;
FIG. 10 is a cross-sectional view illustrating a process of inspecting a height state of a work target area by using the level measuring device of the excavator shown in FIG. 1.

Hereinafter, with reference to the accompanying drawings will be described in more detail with respect to the excavator level measuring apparatus according to an embodiment of the present invention.

Referring to FIG. 1, an excavator level measuring apparatus includes a base 10, a tilting means 20, a laser distance measuring unit 30, an angle measuring unit 40, a central processing unit 50, and a display unit ( 60).

The base 10 is provided with a front surface 11 and a rear surface 12 and is formed in a plate shape having a predetermined thickness. The upper part of the base 10 is provided with a hollow penetrating between the front face 11 and the rear face 12, the fixed shaft 17 is inserted into the hollow, the fixed shaft 17 is the base 10 to the excavator body (2) is rotatably installed by a mounting member (70) comprising a fixing plate (71) for installation in the fixing plate (71) and a bracket (72) provided on the fixing plate (71).

Here, the hollow size of the base 10 is preferably formed to have a diameter larger than the diameter of the fixed shaft 17 to reduce friction with the fixed shaft 17, the same size as the size of the fixed shaft 17 In the case of forming a lubricating agent, a lubricant may be used.

The tilting means 20 includes a driven gear 23 coupled to the upper portion of the base 10, a main gear 22 engaged with the driven gear 23, and a motor 21 for rotating the main gear 22. And a weight member 25 provided at the lower end of the base 10 and the electromagnet 24 for maintaining the rotation state of the base 10 rotated by a predetermined angle by the motor 21.

1 and 2, the motor 21 is fixed to the front of the mounting portion to rotate the main gear 22 in accordance with the control signal of the central processing unit 50 to be described later to rotate the base 10.

The electromagnet 24 is installed between the base 10 and the fixed shaft 17 to form a magnetic pole when the current is applied to maintain the rotation state of the base 10, and the surface contact with the outer peripheral surface of the fixed shaft 17 It is formed in a shape surrounding a portion of the outer peripheral surface of the fixed shaft 17 so as to be fixed is installed inside the upper portion of the base (10).

As shown in FIG. 2, the electromagnet 24 has a large area in contact with the fixed shaft 17 to maintain the rotated state of the base 10 rotated at a predetermined angle by the motor 21. It is good to let.

Alternatively, the tilting means 20 is a servomotor 21a and a servomotor for rotating the base 10a rotatably coupled to the bracket 72a installed at the front of the fixed plate 71a as shown in FIG. 4. It may be configured to include a power transmission member 22a for connecting the 21a and the base 10a and a weight member 25a installed at the lower end of the base 10a.

Referring to FIG. 4, the base 10a is provided with an angle measuring unit 40, a laser distance measuring unit 30, and a central processing unit 50. Rotating shafts 10b provided at both sides of the base 10a are provided. It is rotatably coupled to brackets 72a fixedly installed in directions parallel to the left and right directions.

 The bracket 72a is preferably formed to be long enough that the rotation range of the base 10a is not limited.

The base 10a is rotated in the front direction of the base 10a by the servo motor 21a with the upper end rotated about the rotation axis 10b, or the lower end is rotated in the front direction of the base 10a. That is, the angle can be adjusted so that the laser light 31 emitted from the laser distance measuring unit 30 installed in the base 10a can reach the measurement target point.

As shown in FIG. 7, the laser distance measuring unit 30 emits the laser beam 31 to the first point on the ground, which is the basis of the work, between the base 10 and the first point. Measure the distance and transmit the measured distance information to the central processing unit 50 to be described later.

As shown in FIGS. 3 and 5, the laser distance measuring unit 30 may be installed such that the plane of the base 10 or the rotating plate 22a is perpendicular to the direction in which the laser light 31 is emitted. .

The angle measuring unit 40 is installed on the front of the base 10 or the rotating plate 22a at the same height as the laser distance measuring unit 30, and when the distance is measured by the laser distance measuring unit 30, the laser is referenced to the ground. The angle formed by the distance measuring unit 30 and the point to be measured is measured, and the measured angle information is transmitted to the central processing unit 50 described later.

When measuring the angle of the angle measuring unit 40, it is preferable to set the direction of the angle measurement as a direction parallel to the ground, which is the weight member 25 when the motor 21 and the servo motor 21a do not operate. ), The lower end of the base 10 is always directed to the ground direction by its own weight, that is, the reference body (direction parallel to the ground) of the angle measuring unit 40 is maintained so that the excavator body 2 is positioned on the slope terrain. Both cases and flat terrains have the same angle measurement values.

The angle measuring unit 40 may be applied to any type of digital or analog if the angle sensor and the tilt sensor of the method of measuring the angle distortion using the principle of gravity.

The central processing unit 50 controls the driving of the motor 21 and the servomotor 21a and uses the distance information and the angle information measured by the laser distance measuring unit 30 and the angle measuring unit 40 to base 10. ) Height information is calculated. Then, the height information of the preset measurement target point and the calculated height information of the base 10 are compared, and the high and low of the work position are calculated numerically and then transmitted to the display unit 60 to be described later.

The display unit 60 is installed inside the cab to inform the driver of the excavator body 2 of the height information and the high and low numerical information of the base 10 calculated by the central processing unit 50. The display unit 60 is provided with an operation button 61 that can rotate the base 10 by operating the motor 21 through the central processing unit 50.

On the other hand, the base 10 may be installed inside the excavator body, that is, the cab by the fixing plate 71, it may be installed on the upper portion of the excavator body as shown in FIG. In this case, the bracket 72 of the mounting member 70 is appropriate so as not to limit the rotation angle of the base 10 rotated in the direction of the excavator body 2 by the excavator body 2 when the base 10 is rotated. It is preferably formed in length.

Hereinafter, the operation method of the level display device 1 of the excavator having the above-described configuration will be described in detail with reference to FIGS. 7 to 9.

Referring to FIG. 7, after the excavator has performed the work to the point A₁ separated by a predetermined distance from the first point BL, which is the work reference point, the working surface SV currently being worked on has the height of the first point BL. If it is to determine whether the same as the excavator driver to drive the motor 21 through the operation button 61 provided on the display unit 60 to rotate the base 10.

When the laser beam 31 emitted from the laser distance measuring unit 30 by the motor 21 points to the first point BL, the laser distance measuring part 30 is installed at the first point BL and the excavator. The distance 설치 between the installation points N₁ of the base 10 is measured, and the angle measuring unit 40 measures the rotation angle θ₁ of the base 10.

The distance (Ｚ₁) measured by the laser distance measuring unit 30 and the angle (θ₁) measured by the angle measuring unit 40 are transmitted to the central processing unit to calculate the height (Ｙ₁) information of the base 10, and the calculated height. The information is transmitted to the driver through the display unit 60.

Here, looking at the process of calculating the height information of the base 10, through the value and θ ₁ measured by the laser distance measuring unit 30 and the angle measuring unit 40 Ｙ₁ is Ｚ₁ sin (θ₁). Able to know. At this time, when the height of the base 10 installed from the lower end of the excavator is H, it can be seen that the working surface SJ currently being worked is located at a height as high as (Ｙ₁-H) from the first point BL.

Meanwhile, as illustrated in FIG. 8, when the excavator main body 2 is located at a point A₂ away from the first point BL by a predetermined distance and lower than the first point BL, the laser distance measuring unit 30 Ｙ₂ is 는 ₂ × sin (θ₂) based on 각도 ₂ and θ₂ measured by the angle measuring unit 40, where Ｙ₂ value is the height of the base 10 installed in the excavator body 2, that is, H Since it has a smaller value, it can be seen that the working surface (S₂) currently being worked is located at a position as low as (Ｙ₂-H) from the first point (BL).

On the other hand, the level measuring device 1 of the excavator according to the present invention, as described above, can provide the height information of the current working surface as well as measure the distance away from the work reference line.

Referring to FIG. 9, when the excavator main body 2 is located at a point A₃ away from the center line CL, the excavator driver has a straight line distance from the line VL perpendicular to the center line CL. Ｘ₃) is measured. Then, when the distance (거리 ₃) between the first point (ＧL) and the excavator is measured, the central processing unit (50) moves away from the direction perpendicular to the centerline (CL3) based on the two distance information (Ｘ₃, Ｚ₃). ) Is calculated and displayed on the display unit 60.

In addition, the level display device 1 of the excavator according to the present invention may perform a check surveying operation after completion.

As shown in FIG. 10, the height of the working surface can be measured by scanning the interval between the first point (BL) and the survey point (MP) for each section, and surveying the projected point (P) as shown in the figure. In this case, the distance (Ｚ₄) and the angle (θ₄) between the surveying point (MP) and the protruding point (P) can be measured to determine how high the protruding point (P) protrudes. When surveying d), it is possible to know how deep it is.

That is, the protruding point P is the height (Ｙ₄) obtained through the distance (측) between the surveying point MP and the protruding point P at the height H of the base 10 installed in the excavator. (H-Ｙ₄) is obtained by subtracting the value (H-Ｙ₄), and the entry point (D) is obtained by the distance (Ｚ₄`) and the angle (θ₄`) between the measurement point (MP) and the insertion point (D). In the `), the value (값` -H) obtained by subtracting the height H of the base 10 installed in the excavator can be seen. In this way, the operator can easily grasp the on-site working status as well as perform the corrective work at the same time.

According to the level measuring device of the excavator as described above, the excavator driver can directly survey the height while the operation proceeds without the survey engineer and the survey assistant to measure the height of the work zone, it is possible to omit additional work after the operation confirmation survey work There is an advantage that can shorten the working time, it is possible to easily know the height difference from the reference point to enable precise work.

An apparatus for measuring a level of an excavator according to the present invention described above has been described with reference to the example shown in the drawings, but this is only an example, and those skilled in the art may various modifications and equivalent implementation therefrom. It will be appreciated that examples are possible.

Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

10: Base
20: tilting means
30: laser distance measuring unit
40: angle measuring unit
50:
60 display unit

Claims (1)

A base rotatably coupled to a mounting member installed on an excavator body;
Tilting means installed between the base and the mounting member to rotate the base with respect to the body, maintain the rotated state of the base, and return the base to its initial state before rotation;
A laser distance measuring unit installed on the base to measure a distance between the base and a first point on the ground that is a work criterion;
And an angle measuring unit installed on the base to measure an angle formed by the first point and the base with respect to the ground when measuring the distance of the laser distance measuring unit.

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