KR20240030663A - Device for measuring swing angle of excavator - Google Patents

Abstract

In the present invention, in order to precisely measure the cabin turning angle of an excavator, measuring holes are formed at a certain angle along the circular circumference of the lower body, a proximity sensor is placed on the upper turning body that is in a turning motion, and the cabin is adjusted according to recognition of the measuring hole. In addition to measuring the turning angle, the structure has been improved so that the turning start position can be confirmed by forming an indicating hole indicating the front direction of the excavator cabin on the outside of the measuring hole located in the front direction among the measuring holes formed in the lower body. This relates to a turning angle measuring device for a cabin for an excavator.

Description

{Device for measuring swing angle of excavator}

The present invention relates to a swing angle measuring device for a cabin for an excavator. In particular, in order to precisely measure the swing angle of an excavator's cabin, measuring holes are formed at certain angles along the circular circumference of the lower body, and the upper swing body that performs the swing operation is provided with measuring holes. A proximity sensor is placed and the swing rotation angle of the cabin is measured according to the recognition of the measurement hole. In addition, an indication hole indicating the front direction of the excavator cabin is provided on the outside of the measurement hole located in the front direction among the measurement holes formed in the lower body. It relates to a turning angle measuring device for an excavator cabin whose structure has been improved so that the turning start position can be confirmed.

In general, an excavator is a construction machine with a variety of work functions, such as excavation work to dig or fill the ground during construction and civil engineering work, breaker work such as crushing light soil rock, compactor work such as soil compaction, and crusher work such as cutting. says

These excavators are usually equipped with an engine such as a diesel engine to obtain driving power, and use the power of this engine to drive a hydraulic pump, and the hydraulic oil discharged from the hydraulic pump is supplied to hydraulic actuators such as hydraulic motors and hydraulic cylinders. By doing so, each work part such as the rotation of the driving crawler or tire, boom, arm, and bucket is operated.

This well-known excavator has the advantage of being able to work freely without being restricted by the work location because it is equipped with an engine such as a diesel engine.

However, diesel fuel, which is a fossil fuel, is increasingly being depleted, and the need for alternative energy is becoming more and more serious. In addition, fuel prices are high, and due to the special characteristics of heavy equipment, fuel consumption is particularly high, which increases operating costs.

In addition, since the existing excavator cabin is arranged in a structure that rotates at 360 degrees, it is difficult for the driver to distinguish between forward and reverse when operating the travel lever within the cabin, which not only raises the risk of safety accidents, but also increases the risk of safety accidents if there are obstacles in the rotation path of the boom. In situations where the turning angle of the cabin is not well known, there is a risk of a collision accident occurring when the boom and arm turn.

Conventional prior art related to upper swing angle control of existing excavators includes, as disclosed in Korean Patent Publication No. 10-2012-131293 “Hybrid Excavator Swing Angle Control System” (publication date: December 5, 2012), a swing output side An inverter and its control unit connected to a motor generator connected to and controlling the turning unit; A control unit that allows limited manipulation of the turning angle of the turning part using a button to set the turning angle of the turning part; and a control lever for manipulating the turning operation of the turning unit.

Other prior art related to upper swing angle control of existing excavators is as disclosed in Korean Patent Publication No. 10-2014-0124493 “Excavator equipped with rotation angle measuring device” (publication date: October 27, 2014), An excavator equipped with a rotation angle measuring device includes a rotating device that is provided between the upper frame and the lower frame of the excavator to enable rotational movement of the upper frame, and is provided around the rotating device and has graduated members at regular intervals on the surface. It includes a timing belt repeatedly arranged, a gear that rotates in engagement with a graduation member of the timing belt, and a rotation angle measurement sensor provided on one side of the gear to recognize the rotation angle of the gear.

However, if the cabin turning angle of the existing excavator is not accurate, fine manipulation must be performed, which may increase the difficulty of driving and cause anxiety for the driver.

Korean Patent Publication No. 10-2012-131293 “Hybrid excavator turning angle control system” (Publication date: 2012.12.05) Korean Patent Publication No. 10-2014-0124493 “Excavator equipped with rotation angle measuring device” (Publication date: 2014.10.27)

The present invention was created to solve the above problems in consideration of the above-mentioned problems. The purpose is to form measuring holes at certain angles along the circular circumference of the lower body in order to precisely measure the turning angle of the excavator's cabin, and to measure the turning angle of the excavator's cabin. The object is to provide a swing angle measuring device for an excavator cabin with an improved structure so that a proximity sensor is placed on the upper swing body and the swing rotation angle of the cabin is measured according to recognition of the measurement hole.

Another object of the present invention is to provide an excavator cabin with an improved structure so that the turning start position can be confirmed by forming an indicating hole indicating the front direction of the excavator cabin on the outside of the measuring hole located in the front direction among the measuring holes formed in the lower body. The purpose is to provide a turning angle measuring device.

The present invention for achieving the above object includes a lower body capable of moving forward and backward; an upper swing body disposed on the upper side of the lower body to be capable of swinging and rotating and having a cabin for a driver to ride on the upper side; a boom, an arm, and a bucket connected to the upper side of the upper rotating body; and measuring means for measuring a turning angle of the cabin with respect to the lower body, wherein the measuring means is circularly fixed to the lower body. A plurality of measuring holes are drilled to be angularly spaced apart from each other, an indicator hole is drilled on the outside of the lower body where the measuring holes are formed to set the initial starting position of the upper rotating body, and is disposed on the lower side of the upper rotating body and the upper A first proximity sensor that outputs pulse information generated while passing through the indication hole during the turning motion of the swing body to the control unit, and is disposed on the lower side of the upper swing body and passes through the measurement hole during the swing motion of the upper swing body. It is equipped with a second proximity sensor that outputs generated pulse information to the control unit, and a control unit that measures the turning angle of the cabin based on the pulse information applied from the first and second proximity sensors and displays this to the driver riding in the cabin. It is characterized by one thing.

The measurement hole is formed to be spaced apart from the lower body at an angle of 10 degrees, and the proximity sensor is configured to increase the angle value of the cabin measured by the control unit as the pulse value generated while passing through the measurement hole is increased. will be.

The measurement hole is formed such that the angular spacing between measurement holes spaced apart from the indicating hole is larger than the angular spacing between measuring holes adjacent to the indicating hole.

The angular spacing between the measuring holes adjacent to the indicating hole becomes larger as the distance between the measuring holes becomes farther away from the indicating hole.

The control unit calculates the angle angle to increase according to the pulse value according to the number of measurement holes recognized by the second proximity sensor when the cabin turns right based on the indicating hole, and the cabin rotates based on the indicating hole. When turning left, the angle angle according to the pulse value according to the number of measurement holes recognized by the second proximity sensor is calculated to decrease.

The present invention forms a plurality of measuring holes spaced apart from each other in the lower body, forms one indicating hole at a position in the front direction of the fixed lower body, and detects the indicating hole on the lower surface of the upper rotating body. By arranging a proximity sensor and a second proximity sensor that detects the measurement hole, pulse value information of the second proximity sensor that detects the measurement hole is output to the control unit when the upper rotating body rotates, and the control unit detects the indication hole formed. Based on the forward position, the angle value of the cabin is increased or decreased according to the number of output measuring holes according to the rotation direction of the cabin, so that the driver riding in the cabin recognizes the angle value of the cabin, and the upper rotating body progresses. It has the useful advantage of preventing safety accidents by informing the direction (forward or rear) and the rotation angle of the cabin.

Figure 1 is a diagram showing an excavator to which a turning angle measuring device for an excavator cabin according to the present invention is applied.
Figure 2 is a bottom view of the lower body of the present invention.
Figure 3 is a plan view showing the upper rotating body and the lower body of the present invention.
Figure 4 is a plan view showing an indicator hole and a measurement hole formed in the lower body of the present invention.
Figure 5 is a diagram showing the pulse value output of the first and second proximity sensors of the present invention.
Figure 6 is a diagram showing the change in angle value according to the rotation direction of the cabin of the present invention.
Figure 7 is a plan view showing another modified example of the measurement hole of the present invention.

In describing the present invention, if it is determined that specific descriptions of related known technologies or configurations may unnecessarily obscure the gist of the present invention, detailed descriptions thereof will be omitted. The terms described below are terms defined in consideration of functions in the present invention and may vary depending on the user's intention or custom. Therefore, the definition should be made based on the contents throughout this specification. In addition, 'including' a certain component does not mean excluding other components, but may include other components, unless specifically stated to the contrary.

When described with reference to FIGS. 1 to 7, a turning angle measuring device for an excavator cabin according to the present invention includes a lower body 110 capable of moving forward and backward; an upper swing body 120 disposed on the upper side of the lower body 110 to be capable of turning and having a cabin 130 for a driver to ride on the upper side; Equipped with a boom 140, an arm 150, and a bucket 160 connected to the upper side of the upper rotating body 120, and measuring the turning angle of the cabin 130 with respect to the lower body 110. Measuring means; provided with a plurality of measuring holes 320 perforated in the lower body 110 to be spaced apart from each other in a circular shape at a predetermined angle, and to set the initial starting position of the upper rotating body 120. An indication hole 310 is drilled on the outside of the lower body 110 where the measurement hole 320 is formed, and is disposed on the lower side of the upper rotating body 120 and indicates the indicator when the upper rotating body 120 is rotated. A first proximity sensor 410 that outputs pulse information generated while passing through the hole 310 to the control unit 500, and is disposed on the lower side of the upper swing body 120 and rotates the upper swing body 120. Based on the second proximity sensor 420, which outputs pulse information generated while passing through the measurement hole 320 to the control unit 500, and the pulse information applied from the first and second proximity sensors 410 and 420, It includes a control unit 500 that measures the turning angle of the cabin 130 and displays it to the driver riding in the cabin 130.

1 and 2, the excavator 100 has a lower body 110 capable of moving forward and backward through orbital rotation, and a rotary 360° rotary mechanism on the upper side of the lower body 110. An upper swing body 120 rotatably disposed and equipped with a cabin 130, a boom 140 with an angle adjustment on the upper side of the upper swing body 120, and an end of the boom 140 connected to the An arm 150 is rotated to allow angle adjustment, and a bucket 160 is mounted on the end of the arm 150.

In addition, the upper rotating body 120 and the lower body 110 are provided in a structure in which the upper rotating body 120 is rotated by a rotating part 200 equipped with a gear, and the rotating part 200 of the lower body 110 ) A plurality of measurement holes 320 are perforated in a circular shape along the circumference and spaced apart from each other, and a pulse signal is sent to the control unit as the measurement holes 320 are recognized on the lower side of the upper rotating body 120. A second proximity sensor 420 that outputs output to the (500) side is provided.

The second proximity sensor 420 is designed to increase the angle value of the cabin 130 measured by the control unit 500 as the pulse value generated while passing through the measurement hole 320 is increased.

As shown in FIG. 3, the first proximity sensor 410 is disposed on the lower side of the upper rotating body 120 and receives pulse information generated as it passes through the indicating hole 310, as shown in FIG. 5. Likewise, by outputting the output to the control unit 500, the angle value of the upper rotating body 120 measured by the second proximity sensor 420 is converted to an angle value of 0.

As shown in FIG. 4, the plurality of measurement holes 320 are formed to be spaced evenly apart by an angle of 10° to correspond to the rotation angle of the upper rotating body 120, or as shown in FIG. 7. The angular spacing between the measuring holes 320 adjacent to the indicating hole 310 is formed so that the angular spacing between the measuring holes 320 formed at the rear position opposite to the front position where the indicating hole 310 is formed is made larger. The angular spacing of the measurement holes 320 spaced apart from the indicating hole 310 may be formed to be larger.

More preferably, the plurality of measurement holes 320 are measurement holes where the spacing between the measurement holes 320 adjacent to the indication hole 310 is spaced apart from the indication hole 310, as shown in FIG. 7. It has a structure in which the angular gap gradually becomes larger toward the (320) side.

As the pulse signal generated in the recognition process of the measurement hole 320 is applied from the second proximity sensor 420, the control unit 500 detects the pulse signal at regular intervals from the indication hole 310 as shown in FIG. 5. The angle value is calculated to increase according to the number of spaced measurement holes 320, and a control signal is output to display this to the outside.

As shown in FIG. 6, when the cabin 130 and the upper swing body 120 turn right with respect to the indicating hole 310, the control unit 500 detects the signal from the second proximity sensor 420. The angular angle is calculated to increase according to the pulse value according to the number of measurement holes 320, and when the upper rotating body 120 including the cabin 130 turns left with respect to the indicating hole 310, the second The angle angle according to the pulse value according to the number of measurement holes 320 recognized by the proximity sensor 420 is calculated to be reduced.

That is, the control unit 500 determines the rotation direction and rotation angle of the cabin 130 according to the number of measurement holes 320 recognized by the second proximity sensor 420 based on the indicating hole 310. It is possible to calculate the rotation angle of the cabin 130, so that the exact rotation angle of the cabin 130 can be measured and informed to the driver riding in the cabin 130.

The present invention having this configuration allows the driver riding in the cabin 130 to check the angle value displayed in the cabin 130, or, as shown in FIG. 6, an excavator ( Using the rotation angle of the cabin 130 (100), it can be confirmed whether the cabin 130 is located in the front or rear.

At this time, as shown in FIG. 6, the upper rotating body 120 and the cabin 130 are used to identify whether the upper rotating body 120 and the cabin 130 are located in a forward position or a 180° rearward position with respect to the lower body 110. ), when rotating the cabin 130 and the upper rotating body 120, the angle value decreases if the rotation direction of the cabin 130 and the upper rotating body 120 turns left, and if the rotating direction of the upper rotating body 120 turns right, the angle value increases. Therefore, the exact rotation angle of the cabin 130 can be measured by measuring the angle value, and the forward and backward directions of the lower body 110 can be identified.

Meanwhile, the rotation direction of the cabin 130 can be recognized by the control unit recognizing the rotation direction of the handle provided in the cabin 130, or by assigning an identification number to each measurement hole 320.

The upper rotating body 120 rotates with respect to the lower body 110 like the cabin 130.

The above-mentioned angle value is the rotation angle equal to the number recognized by the second proximity sensor 420 mounted on the lower surface of the upper swing body 120 through the measurement hole 320 according to the rotation direction of the cabin 130. increases or decreases.

When the first proximity sensor 410 recognizes the indicating hole 310, as shown in FIG. 5, the first proximity sensor 410 transmits the generated pulse information to the control unit 500, so that the control unit 500 determines the angle. Assists in setting the value to an angle value of 0°.

The second proximity sensor 420 transmits pulse information generated when the measurement hole 320 is recognized to the control unit 500.

The control unit 500 accurately measures the rotation angle of the cabin 130 by calculating to increase or decrease the angle value according to the number of pulses transmitted from the second proximity sensor 420 and the rotation direction of the cabin 130. make it possible

When the measuring holes 320 are formed at equal intervals as shown in FIG. 4, accurate angle values can be measured at uniform intervals. However, as shown in FIG. 7, the spacing between the measuring holes 320 is As the spacing between the measuring holes 320 spaced apart from the indicating hole 310 is formed to be larger than the spacing between the measuring holes 320 adjacent to the indicating hole 310, the driver boarding the cabin 130 is referenced. In the process of measuring the backward motion and the rotating motion of the cabin 130 at the rear, the backward motion and the rotating motion of the cabin 130 can be performed with a larger motion than the forward motion and the rotating motion of the cabin 130 at the front. It can be done.

As shown in FIG. 7, the measurement holes 320 on both the left and right sides of the indicator hole 310 are formed at positions that are symmetrical to each other in the left and right directions, as described above. The spacing between the measurement holes 320 may gradually increase from the front position where the indicator hole 310 is formed to the opposite rear position.

That is, the measurement holes 320 can adjust the spacing of the measurement holes 320 to the preferred angle by examining the rotation angle desired by the driver, and measure the rotation angle of the cabin 130 at detailed intervals at the front or rear position. Or, on the contrary, it has the advantage of being able to adjust the rotation angle of the cabin 130 and the upper swing body 120 more comfortably.

Therefore, the present invention forms a plurality of measuring holes 320 spaced apart from each other in the lower body 110, forms one indicating hole 310 at a position in the front direction of the fixed lower body 110, and forms a plurality of measuring holes 320 in the upper body 110. By arranging the first proximity sensor 410 for detecting the indicating hole 310 and the second proximity sensor 420 for detecting the measurement hole 320 on the lower surface of the rotating body 120, the upper rotating body ( When the 120) rotates, the pulse value information of the second proximity sensor 420, which detects the measurement hole 320, is output to the control unit 500, and the front side where the indication hole 310 is formed is transmitted through the control unit 500. Based on the direction position, the angle value of the cabin 130 is increased or decreased according to the number of outputs of the measuring hole 320 according to the rotation direction of the cabin 130 to the driver riding in the cabin 130. It has the useful advantage of preventing safety accidents by recognizing the angle value of ) and informing the moving direction (forward or rear) of the upper swing body 120 and the rotation angle of the cabin 130.

As such, in the detailed description of the present invention, specific embodiments have been described, but of course, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by the claims and equivalents thereof as well as the claims described later.

In other words, the present invention described above is not limited to the specific preferred embodiments described above, and anyone skilled in the art to which the invention pertains can use it without departing from the gist of the present invention as claimed in the claims. Of course, various modifications and implementations are possible, and such modifications are within the scope of the claims.

100: excavator 110: lower body
120: upper swing body 130: cabin
140: Boom 150: Arm
160: Bucket 200: Rotating part
310: indication hole 320: measurement hole
410: first proximity sensor 420: second proximity sensor
500: Control unit

Claims (5)

A lower body 110 capable of moving forward and backward; an upper swing body 120 disposed on the upper side of the lower body 110 to be capable of turning and having a cabin 130 for a driver to ride on the upper side; It is provided with a boom 140, an arm 150, and a bucket 160 connected to the upper side of the upper rotating body 120,
Measuring means for measuring the turning angle of the cabin 130 with respect to the lower body 110,
The measuring means includes a plurality of measuring holes 320 formed in the lower body 110 in a circular manner spaced apart from each other at a certain angle,
an indicator hole 310 drilled on the outside of the lower body 110 where the measuring hole 320 is formed to set the initial starting position of the upper rotating body 120;
A first proximity sensor 410 is disposed on the lower side of the upper rotating body 120 and outputs pulse information generated while passing through the indicating hole 310 during the rotating operation of the upper rotating body 120 to the control unit 500. )and,
A second proximity sensor 420 is disposed on the lower side of the upper rotating body 120 and outputs pulse information generated while passing through the measurement hole 320 during the rotating operation of the upper rotating body 120 to the control unit 500. ), and
Characterized by a control unit 500 that measures the turning angle of the cabin 130 based on pulse information applied from the first and second proximity sensors 410 and 420 and displays this to the driver riding in the cabin 130. A turning angle measuring device for an excavator cabin. In claim 1,
The measuring hole 320 is formed to be spaced apart from the lower body 110 at an angle of 10 degrees,
The proximity sensor is configured to increase the angle value of the cabin 130 measured by the control unit 500 as the pulse value generated while passing through the measurement hole 320 increases. Angle measuring device. In claim 1,
The measuring hole 320 is characterized in that the angular spacing of the measuring holes 320 spaced apart from the indicating hole 310 is larger than the angular spacing of the measuring holes 320 adjacent to the indicating hole 310. Swivel angle measuring device for excavator cabins. In claim 1,
The measuring hole 320 is characterized in that the angular spacing between the measuring holes 320 adjacent to the indicating hole 310 becomes larger as it moves toward the measuring hole 320 spaced apart from the indicating hole 310. Swivel angle measuring device for excavator cabins. In claim 1,
The control unit 500 controls the angle angle according to the pulse value according to the number of measurement holes 320 recognized by the second proximity sensor 420 when the cabin 130 turns right with respect to the indicating hole 310. is calculated to increase, and when the cabin 130 turns left based on the indicating hole 310, the angular angle according to the pulse value according to the number of measurement holes 320 recognized by the second proximity sensor 420 A turning angle measuring device for an excavator cabin, characterized in that it is calculated to reduce.

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