A scraper apparatus for a skid loader that is possible to adjust cutting level and cutting inclination of work surface by using laser

Abstract

The present invention is an invention that provides the effect of cutting the work surface to a desired flatness or inclination regardless of the irregular condition of the road surface by using a laser transmitting and receiving device to adjust the left and right heights of the road surface crusher in real time during a road surface cutting operation, thereby allowing the work surface to be cut flat to a target height or cut to a target left and right inclination. It is characterized by comprising a road surface crusher (100), an information providing unit (200), and a control unit (300).

Description

Technology Field

[0001] The present invention relates to a road surface crushing device for a skid loader that uses a laser to adjust the cutting height and left-right tilt of the work surface. More specifically, it relates to a road surface crushing device for a skid loader that uses a laser transmitter / receiver to adjust the left-right height of the road surface crusher in real time during a road surface cutting operation, thereby enabling the work surface to be cut flat to a target height or cut to a target height and target left-right tilt. Background Technology

[0003] With the significant development of science and technology, technology in the construction sector, including civil engineering and architecture, has also made great progress, and as a result, large-scale buildings and facilities are being constructed.

[0004] In the past, due to a shortage of technology and equipment in the construction sector, work was carried out labor-intensively, resulting in slow progress and a high frequency of safety accidents. However, currently, civil engineering and construction projects are being conducted safely and efficiently through accumulated construction technology and advanced equipment.

[0005] In the past, to remove flooring materials such as concrete and asphalt installed on roads or the ground from the floor surface, workers manually performed the removal using flooring removal equipment, which resulted in low work efficiency and a long working time.

[0006] To solve this problem, work efficiency has been greatly improved and work time shortened by recently attaching a road mill, which is equipment that cuts roads or ground to a certain width and depth, to construction equipment such as a skid steer loader.

[0007] When cutting a work surface with a road shredder mounted on a skid loader, in the conventional case, the left and right heights of the road shredder bottom surface from the work surface change depending on the condition of the work surface, that is, the left and right slopes of the road shredder bottom surface change, and there was a problem that the work surface could not be cut flat.

[0008] In other words, when cutting a work surface with a road mill, there was a problem in that conventional road mills could not handle situations where the entire work surface had to be cut flat to a target height or the entire work surface had to be cut to a target height and a target left-right slope.

[0009] Therefore, when cutting a work surface using a road crusher mounted on a skid loader, it is necessary to develop technology that can flatten a work surface with irregular road conditions to a target height or cut it to a target height and target left-right slope.

[0010] The present invention aims to solve the aforementioned conventional problems and address the need for such solutions. It proposes a technology for a road surface crushing device for a skid loader that utilizes a laser transmitter / receiver to adjust the left and right heights of the road surface crusher in real time during a road surface cutting operation, thereby enabling the work surface to be cut flat to a target height or cut to a target height and target left and right slopes. The following are prior art related thereto. Prior art literature

[0012] 1. Korean Registered Patent Publication No. 10-1468529 2. Korean Registered Patent Publication No. 10-1858496 3. Korean Registered Patent Publication No. 10-2368351 4. Korean Published Patent Publication No. 10-2023-0167104 The problem to be solved

[0013] The present invention aims to enable the work surface to be cut flat to a target height or to be cut to a target height and a target left-right slope by using a laser transmitting and receiving device to adjust the left-right height of the road surface crusher in real time during a road surface cutting operation. means of solving the problem

[0015] The road surface crushing device for a skid loader according to the present invention, which controls the cutting height and left-right cutting inclination of a work surface using a laser to solve the above problem,

[0016] A road surface crusher (100) mounted on a skid loader (1) to cut a work surface flat to a target height or to cut a work surface to a target height and a target left-right slope, comprising a left height adjustment means (110) and a right height adjustment means (120) capable of individually adjusting the left and right heights of the road surface crusher;

[0017] An information providing unit (200) that generates information to determine in real time whether a road surface crusher (100) performing a work surface cutting operation is in a state to cut the work surface flat to a target height or cut the work surface to a target height and a target left-right inclination using a laser transmitter and a laser receiver, and provides this information to a control unit (300);

[0018] It is characterized by including a control unit (300) that controls the left height adjustment means (110) and the right height adjustment means (120) of the road surface crusher (100) so that the road surface crusher (100) can cut the work surface flat to a target height or cut the work surface to a target height and a target left-right slope using information provided by the information providing unit (200). Effects of the invention

[0020] The present invention provides the effect of being able to cut the work surface to a desired flatness or inclination regardless of the irregular condition of the road surface by using a laser transmitting and receiving device to adjust the left and right heights of the road surface crusher in real time during a road surface cutting operation, thereby cutting the work surface flatly to a target height or cutting the work surface to a target height and target left and right inclination. Brief explanation of the drawing

[0022] FIG. 1 is an overall configuration diagram of the first embodiment of the present invention. FIG. 2 is an explanatory diagram of the operation of the first embodiment of the present invention. FIG. 3 is an overall configuration diagram of the second embodiment of the present invention. FIGS. 4 and 5 are explanatory diagrams of the operation of a second embodiment of the present invention. Specific details for implementing the invention

[0023] Embodiments of the present invention will be described in detail with reference to the attached drawings.

[0024] The present invention, a road surface crushing device for a skid loader that controls the cutting height and left-right slope of a work surface using a laser, is an invention that uses a laser transmitting and receiving device to adjust the left-right height of the road surface crusher in real time during a road surface cutting operation, thereby enabling the work surface to be cut flat to a target height or cut to a target height and target left-right slope, and thus provides the effect of cutting the work surface to a desired flatness or slope regardless of the irregular condition of the road surface. As shown in FIG. 1, it is characterized by being configured to include a road surface crusher (100), an information providing unit (200), and a control unit (300).

[0026] Specifically, the road surface crushing device for a skid loader that adjusts the cutting height and left-right cutting inclination of the working surface using a laser, according to the present invention, as illustrated in FIG. 1 and 3,

[0027] A road surface crusher (100) mounted on a skid loader (1) to cut a work surface flat to a target height or to cut a work surface to a target height and a target left-right slope, comprising a left height adjustment means (110) and a right height adjustment means (120) capable of individually adjusting the left and right heights of the road surface crusher;

[0028] An information providing unit (200) that generates information to determine in real time whether a road surface crusher (100) performing a work surface cutting operation is in a state to cut the work surface flat to a target height or cut the work surface to a target height and a target left-right inclination using a laser transmitter and a laser receiver, and provides this information to a control unit (300);

[0029] It is characterized by including a control unit (300) that controls the left height adjustment means (110) and the right height adjustment means (120) of the road surface crusher (100) so that the road surface crusher (100) can cut the work surface flat to a target height or cut the work surface to a target height and a target left-right slope using information provided by the information providing unit (200).

[0031] The above-described road surface crusher (100) is a construction equipment mounted on a skid loader (1) to cut a work surface flat to a target height or to cut a work surface to a target height and a target left-right slope, and includes a left height adjustment means (110) and a right height adjustment means (120) capable of individually adjusting the left and right heights of the road surface crusher. As shown in FIGS. 1 and 3, the road surface crusher (100) is mounted on a skid loader (1) using an attachment device (2), and a road surface cutting drum is installed in the internal space so that as the drum rotates, a work surface such as a road or road surface is cut to a certain width and height. At this time, the cutting height is determined by the height of the bottom surface of the road surface crusher (100) relative to the ground (specifically, the bottom surface of the road surface crushing drum), and the cutting flatness is determined by the left-right slope of the bottom surface of the road surface crusher (100) (specifically, the bottom surface of the road surface crushing drum). It is decided.

[0032] As illustrated in FIGS. 1 and 3, the road surface crusher (100) of the present invention is equipped with a left height adjustment means (110) and a right height adjustment means (120) that can individually adjust the left and right heights of the road surface crusher, respectively, on the road surface crusher (100).

[0033] When cutting a work surface with a road surface crusher (100), in the case of the conventional method, the left-right height and left-right slope of the bottom surface of the road surface crusher change depending on the irregular condition of the work surface; that is, the left-right height and left-right slope of the bottom surface of the road surface crusher are affected depending on the irregular condition of the work surface, so there was a problem in that the work surface could not be cut flat to the target height or could not be cut to the target height and target left-right slope. Therefore, when a situation arises where the work surface needs to be cut flat to the target height or the work surface needs to be cut to the target height and target left-right slope during the work surface cutting operation, the conventional road surface crusher had a problem in that it could not respond to this.

[0034] Therefore, when cutting a work surface using the above-mentioned road surface crusher (100), in order to cut the work surface in an irregular road surface condition to a flat height or to cut it to a target height and a target left-right slope, the left-right height and left-right slope of the road surface crusher must be adjustable in real time. Thus, the present invention includes a control unit (300) that controls a left height adjustment means (110) and a right height adjustment means (120), and an information providing unit (200) that provides necessary information to the control unit (300).

[0036] The above information providing unit (200) is configured to generate information that can determine in real time whether the road surface crusher (100) performing the work surface cutting operation is in a state where it can cut the work surface flat to a target height or cut the work surface to a target height and a target left-right slope, and to provide this information to the control unit (300).

[0037] The present invention is divided into a first embodiment using one laser receiver and a second embodiment using two laser receivers. The first embodiment of the present invention is an embodiment that uses one laser receiver to cut a work surface flat to a target height or to cut at a target height and a target left-right inclination, and the second embodiment is an embodiment that uses two laser receivers to cut a work surface flat to a target height or to cut at a target height and a target left-right inclination.

[0039] Hereinafter, a first embodiment of the present invention will be described.

[0040] Specifically, the information providing unit (200) according to the first embodiment of the present invention, as shown in FIG. 1,

[0041] A laser transmitter (210) installed at a certain distance from a road surface crusher (100) to adjust the transmission height of the laser beam and transmitting the laser beam horizontally at the transmission height, and

[0042] It is characterized by including a laser receiver (220) that is installed at a certain height on a road surface crusher (100) so as to receive a laser beam transmitted by a laser transmitter (210), and is installed so that the direction of laser beam reception can be adjusted, and generates real-time information on the height of the laser beam reception height relative to a reference reception height using laser beam reception height information and provides it to a control unit (300).

[0044] In addition, the control unit (300) according to the first embodiment of the present invention is characterized by using information on the reception height of a laser beam relative to a reference reception height provided in real time by a laser receiver (220), and when it is determined that the reception height of the laser beam is not at the reference reception height, controlling the left height adjustment means (110) and the right height adjustment means (120) of the road surface crusher (100) so that the reception height of the laser beam becomes the reference reception height.

[0046] The above laser transmitter (210) is installed at a certain distance from the road surface crusher (100) so as to adjust the transmission height of the laser beam, and is configured to transmit the laser beam horizontally at the transmission height.

[0047] The laser beam transmitted horizontally from the laser transmitter (210) is a line-type (linear) laser beam or a planar laser beam, and when the laser beam is a line-type laser beam, it is characterized by being transmitted in a 360-degree rotation.

[0048] A laser beam transmitted horizontally from a laser transmitter (210) must always be received by a laser receiver (220) installed in a road surface crusher (100) that is in the course of road surface cutting and whose direction of operation is frequently changed. In the case where the laser beam is a line-type laser beam, the line-type laser beam is transmitted horizontally in a 360-degree rotation as shown in FIG. 2 so that the line-type laser beam can always be received by the laser receiver (220) installed in the road surface crusher (100). In this case, a beam rotation device is installed in the laser transmitter (210).

[0049] Additionally, although not shown, if the laser beam is a planar laser beam, the laser beam itself is transmitted as a planar beam having a certain area (e.g., a semicircular plane, a circular plane), so the planar laser beam can always be received by the laser receiver (220) installed in the road surface crusher (100), so there is no need to rotate and transmit the laser beam. In this case, a beam spreading device is installed in the laser transmitter (210) to enable the laser beam to be transmitted as a planar beam having a certain area (e.g., a semicircular plane, a circular plane).

[0051] The laser transmitter (210) is installed at a certain distance from the road surface crusher (100), and depending on the conditions of the work site, the position at a certain distance may be the front front at a certain distance from the road surface crusher (100), the left front at a certain distance from the road surface crusher (100), the right front at a certain distance from the road surface crusher (100), the left side of the road surface crusher (100) at a certain distance from the road surface crusher (100), or the right side of the road surface crusher (100) at a certain distance from the road surface crusher (100). FIG. 1 illustrates an example in which the laser transmitter (210) is installed at a certain distance from the road surface crusher (100).

[0052] As illustrated in FIG. 2, the laser transmitter (210) emits a laser beam horizontally at the emission height, and the emission height of the laser beam is pre-set before the road surface cutting operation to a height such that the work surface can be cut to a target height, and with the laser beam emission height set, the left and right heights of the road surface crusher are pre-set before the road surface cutting operation to a height such that the receiving height of the laser beam received by the laser receiver (220) becomes the reference receiving height.

[0053] Since the output height of the laser beam emitted from the above laser transmitter (210) varies depending on the target height after cutting the work surface currently being cut, the output height of the laser beam is pre-set before the road surface cutting operation so that the work surface can be cut to the target height. That is, if the target height of the work surface changes, the output height of the laser beam is also adjusted to change.

[0054] In addition, when the laser beam output height of the laser transmitter (210) is set, the left and right heights of the road surface crusher (100) are pre-set before the road surface cutting operation to a height such that the receiving height of the laser beam received by the laser receiver (220) becomes the reference receiving height.

[0055] As illustrated in FIG. 2, when cutting a work surface to a target height with a road surface crusher (100), the laser beam output height of the laser transmitter (210) is pre-set before the road surface cutting operation to a height that allows the work surface to be cut to a target height, and in this state, the laser beam output from the laser transmitter (210) is rotated and output in a horizontal direction.

[0056] A laser beam transmitted horizontally at a transmission height that allows the work surface to be cut to a target height is received by a laser receiver (220). The operator of the skid loader (1) uses a left height adjustment means (110) and a right height adjustment means (120) to adjust the left and right heights of the road surface crusher (100) before the road surface cutting operation so that the receiving height of the laser beam received by the laser receiver (220) becomes the reference receiving height.

[0057] If the work surface is to be cut flat to a target height, the skid loader (1) operator adjusts the left and right heights of the road surface crusher (100) so that the laser beam reception height becomes the reference reception height, and if the work surface is to be cut to a target height and a target left and right slope, the skid loader (1) operator adjusts the left and right heights of the road surface crusher (100) so that the left and right slopes of the road surface crusher (100) correspond to the target left and right slopes, while the laser beam reception height becomes the reference reception height.

[0058] When the left and right heights of the road surface crusher (100) are pre-set to be equal or different so that the receiving height of the laser beam received by the laser receiver (220) becomes the reference receiving height, the road surface cutting operation begins. During the road surface cutting operation, a laser beam transmitted horizontally from the laser transmitter (210) is received by the laser receiver (220) installed at a certain height on the road surface crusher (100). If the road surface crusher (100) is in a state where it can cut the work surface to the target height, the laser beam transmitted from the laser transmitter (210) is received at the reference receiving height of the laser receiver (220), whereas if the road surface crusher (100) is in a state where it cannot cut the work surface to the target height, the transmitted laser beam is not received at the reference receiving height of the laser receiver (220).

[0060] The laser receiver (220) is installed at a certain height on the road surface crusher (100) so as to receive a laser beam transmitted by the laser transmitter (210), and is installed so that the direction of laser beam reception can be adjusted. It is configured to generate real-time information on the height of the laser beam reception relative to the reference reception height using the laser beam reception height information and provide it to the control unit (300).

[0061] As shown in FIG. 1, the laser receiver (220) is installed at a certain height on one side of the road surface crusher (100), and is installed either fixedly or hinge-rotatably.

[0062] In order to accurately receive the laser beam, the laser receiver (220) must always maintain a vertical state. However, when the laser receiver (220) is fixedly installed on the road surface crusher (100), the road surface crusher (100) may tilt back and forth depending on the condition of the work surface. Consequently, there is a disadvantage that the laser receiver (220) cannot maintain a vertical state, but there is an advantage that no separate means for maintaining an upright position is required. To overcome this disadvantage, the laser receiver (220) can be installed so as to be hinge-rotatable on the road surface crusher (100). When the laser receiver (220) is installed so as to be hinge-rotatable on the road surface crusher (100), there is a disadvantage that additional means for maintaining an upright position (such as a tilt detection sensor and an upright position actuator) is required to keep the hinge-rotatable laser receiver (220) in an upright state at all times, but there is an advantage that the laser receiver (220) can always be maintained in a vertical state.

[0063] Additionally, the laser receiver (220) is installed in the road surface crusher (100) so that the laser beam reception direction can be adjusted. As described above, the laser transmitter (210) is installed at a certain distance from the road surface crusher (100) in the front, a certain distance from the road surface crusher (100) in the left, a certain distance from the road surface crusher (100) in the right, a certain distance from the road surface crusher (100) in the left, and a certain distance from the road surface crusher (100) in the right, depending on the conditions of the work site. In order to receive an accurate laser beam corresponding to this, the laser beam reception direction of the laser receiver (220) must be adjusted, and for this purpose, the laser receiver (220) is installed in the road surface crusher (100) so that the laser beam reception direction can be adjusted. FIG. 2 illustrates an example of installation of a laser receiver (220) in which the laser beam reception direction is adjusted to face forward in response to a laser transmitter (210) installed at a certain distance from the road surface crusher (100).

[0064] In addition, the laser receiver (220) uses laser beam reception height information to generate real-time information on the reception height of the laser beam relative to the reference reception height and provides it to the control unit (300).

[0065] The information regarding the height of the laser beam relative to the reference receiving height provided to the control unit (300) is information that allows the control unit (300) to determine in real time whether the road surface crusher (100) is in a state where it can flatten the work surface to a target height. The laser beam receiving height received by the laser receiver (220) varies depending on the height of the road surface crusher (100) during the road surface cutting operation. As shown in FIG. 2, during the road surface cutting operation, if the height of the road surface crusher (100) is at a height that allows the road surface crusher (100) to cut the work surface to a target height, the laser beam receiving height is at the reference receiving height. If the height of the road surface crusher (100) is at a height where the road surface crusher (100) cannot cut the work surface to a target height, the laser beam receiving height is at a height higher or lower than the reference receiving height.

[0066] Accordingly, the laser receiver (220) generates information on the height of the laser beam received relative to the reference receiving height, using the receiving height of the laser beam transmitted by the laser transmitter (210) as shown in FIG. 2, so that the control unit (300) can determine whether the height of the road surface crusher (100) is at a height where the road surface crusher (100) cannot flatten the work surface to the target height during the road surface cutting operation, and provides this information to the control unit (300).

[0067] For example, if the laser beam reception height is a reference reception height, the laser beam reception height information relative to the reference reception height is generated as 0 and provided to the control unit (300); if the laser beam reception height is higher than the reference reception height, the laser beam reception height information relative to the reference reception height is generated as HIGH and provided to the control unit (300); and if the laser beam reception height is lower than the reference reception height, the laser beam reception height information relative to the reference reception height is generated as LOW and provided to the control unit (300).

[0069] In the first embodiment of the present invention using one laser receiver, the control unit (300) controls the left height adjustment means (110) and the right height adjustment means (120) of the road surface crusher (100) using information provided by the information providing unit (200) so that the road surface crusher (100) can cut the work surface flat to a target height (when the skid loader (1) operator pre-sets the left and right heights of the road surface crusher (100) to be the same while the laser beam reception height becomes the reference reception height) or cut the work surface to a target height and a target left and right slope (when the skid loader (1) operator pre-sets the left and right heights of the road surface crusher (100) differently to correspond to the target left and right slope while the laser beam reception height becomes the reference reception height).

[0070] That is, in the first embodiment of the present invention, the control unit (300) controls the left height adjustment means (110) and the right height adjustment means (120) of the road surface crusher (100) so that the laser beam reception height becomes the reference reception height when it is determined that the laser beam reception height is not at the reference reception height by using the information on the reception height of the laser beam relative to the reference reception height provided in real time by the laser receiver (220).

[0072] Specifically, in the first embodiment of the present invention, the control unit (300) is, as shown in FIG. 2,

[0073] A main controller (310) that, using information on the height of a laser beam relative to a reference receiving height provided in real-time by a laser receiver (220), generates a control signal for height adjustment of a road surface crusher (100) to make the laser beam's receiving height equal to the reference receiving height when it is determined that the laser beam's receiving height is not at the reference receiving height and provides it to a sub-controller (320), and after providing the control signal, stops providing the control signal to the sub-controller (320) when it is determined that the laser beam's receiving height is at the reference receiving height.

[0074] It is characterized by including a sub-controller (320) that controls the left height adjustment means (110) and the right height adjustment means (120) of the road surface crusher (100) according to a control signal provided by the main controller (310) to adjust the left and right heights of the road surface crusher (100), and stops adjusting the left and right heights of the road surface crusher (100) when the main controller (310) stops providing the control signal.

[0076] As illustrated in FIG. 2, when a laser transmitter (210) transmits a laser beam horizontally at a transmission height that allows the work surface to be cut to a target height, the main controller (310) uses information on the reception height of the laser beam relative to the reference reception height (e.g., high, low) provided in real-time by the laser receiver (220). If it is determined that the reception height of the laser beam is not at the reference reception height, the main controller (310) generates a control signal for height adjustment of the road surface crusher (100) to make the reception height of the laser beam equal to the reference reception height (specifically, to make the information on the reception height of the laser beam relative to the reference reception height converge to 0) and provides it to the sub-controller (320).

[0077] For example, the control signal provided by the first main controller (310) to the sub-controller (320) may be a signal to raise or lower the left and right heights of the road surface crusher (100).

[0078] After the main controller (310) provides a control signal to the sub-controller (320), it uses the information on the reception height of the laser beam relative to the reference reception height provided in real time by the laser receiver (220), and if it is determined that the reception height of the laser beam is at the reference reception height, it stops providing the control signal to the sub-controller (320).

[0079] For example, with reference to FIG. 2, when the laser receiver (220) provides information on the height of the laser beam receiving height relative to the reference receiving height, that the laser beam receiving height is higher than the reference receiving height, the main controller (310) provides a control signal to the sub controller (320) to lower the left and right sides of the road surface crusher (100) simultaneously and equally, and then when the laser receiver (220) provides information on the height of the laser beam receiving height relative to the reference receiving height, that the laser beam receiving height is at the reference receiving height, the main controller (310) stops providing the control signal to the sub controller (320).

[0080] A sub-controller (320) that receives a control signal to lower the left and right sides of the road surface crusher (100) simultaneously and equally controls the left height adjustment means (110) and the right height adjustment means (120) of the road surface crusher (100) to lower the left and right sides of the road surface crusher (100) simultaneously and equally until the main controller (310) stops providing a control signal, thereby allowing the work surface to be cut flat to the target height.

[0081] That is, when the left and right sides of the road surface crusher (100) are lowered simultaneously until the main controller (310) stops providing control signals, the bottom surface of the road surface crusher (100), specifically the bottom surface of the road surface crushing drum (the surface in contact with the work surface for cutting the work surface), becomes horizontal from the ground to the target height (when the skid loader (1) operator has pre-set the left and right heights of the road surface crusher (100) to be the same), so the work surface is cut flatly to the target height, or becomes tilted to the target height by the target left and right slope (when the skid loader (1) operator has pre-set the left and right heights of the road surface crusher (100) differently to correspond to the target left and right slope), so the work surface is cut to the target height and the target left and right slope.

[0083] Hereinafter, a second embodiment of the present invention will be described.

[0084] Specifically, the information providing unit (200) according to the second embodiment of the present invention, as shown in FIG. 3,

[0085] A laser transmitter (210-1) installed at a certain distance from the road surface crusher (100) to adjust the transmission height and transmission angle of the laser beam, and capable of transmitting the laser beam horizontally at the transmission height or transmitting the laser beam at a horizontal reference transmission angle at the transmission height, and

[0086] A first laser receiver (220-1) is installed at a certain height on the left side of a road surface crusher (100) so as to receive a laser beam transmitted by a laser transmitter (210-1), and is installed so that the direction of laser beam reception can be adjusted, and generates information on the height of the left reception height of the laser beam relative to the reference reception height using laser beam reception height information and provides this information to a control unit (300).

[0087] It is characterized by including a second laser receiver (220-2) that is installed at a certain height on the right side of the road surface crusher (100) to receive a laser beam transmitted by a laser transmitter (210-1), and is installed so that the direction of laser beam reception can be adjusted, and generates information on the height of the right reception height of the laser beam relative to the reference reception height using the laser beam reception height information and provides it to the control unit (300).

[0089] In addition, the control unit (300) according to the second embodiment of the present invention is characterized by using the left reception height information of the laser beam relative to the reference reception height provided by the first laser receiver (220-1) and the right reception height information of the laser beam relative to the reference reception height provided by the second laser receiver (220-2), and when it is determined that at least one of the left and right reception heights of the laser beam is not at the reference reception height, controlling the left height adjustment means (110) and the right height adjustment means (120) of the road surface crusher (100) so that both the left and right reception heights of the laser beam become the reference reception height.

[0091] The above laser transmitter (210-1) is installed at a certain distance from the road surface crusher (100) so as to be able to adjust the transmission height and transmission angle of the laser beam, and is configured to transmit the laser beam horizontally at the transmission height or transmit the laser beam at a horizontal reference transmission angle at the transmission height.

[0092] The laser beam transmitted horizontally from the above laser transmitter (210-1) or transmitted at an angle tilted by a horizontal reference transmission angle is a line-type (linear) laser beam or a planar laser beam, and when the laser beam is a line-type laser beam, it is characterized by being transmitted with a 360-degree rotation.

[0093] A laser beam transmitted horizontally from a laser transmitter (210-1) or transmitted at an angle tilted by a horizontal reference transmission angle must always be received by a first laser receiver (220-1) and a second laser receiver (220-2) installed in a road surface crusher (100) that is in the middle of road surface cutting work and whose direction of work is frequently changed. In the case where the laser beam is a line-type laser beam, the line-type laser beam is transmitted horizontally in a 360-degree rotation as shown in FIG. 4 so that the line-type laser beam can always be received by the first laser receiver (220-1) and the second laser receiver (220-2) installed in the road surface crusher (100). In this case, a beam rotation device is installed in the laser transmitter (210-1).

[0094] Additionally, although not shown, when the laser beam is a planar laser beam, the laser beam itself is transmitted as a plane having a certain area (e.g., a semicircular plane, a circular plane), so the planar laser beam can always be received by the first laser receiver (220-1) and the second laser receiver (220-2) installed in the road surface crusher (100), so there is no need to rotate and transmit the laser beam. In this case, a beam spreading device is installed in the laser transmitter (210-1) to transmit the laser beam as a plane having a certain area (e.g., a semicircular plane, a circular plane).

[0095] The laser transmitter (210-1) is installed at a certain distance from the road surface crusher (100), and depending on the conditions of the work site, the position at a certain distance may be the front front at a certain distance from the road surface crusher (100), the left front at a certain distance from the road surface crusher (100), the right front at a certain distance from the road surface crusher (100), the left side of the road surface crusher (100) at a certain distance from the road surface crusher (100), or the right side of the road surface crusher (100) at a certain distance from the road surface crusher (100). FIG. 3 illustrates an example in which the laser transmitter (210-1) is installed at a certain distance from the road surface crusher (100).

[0096] The laser transmitter (210-1) emits a laser beam (linear laser beam or planar laser beam), and as shown in FIG. 4, emits the laser beam horizontally at the emission height, or as shown in FIG. 5, emits the laser beam at an angle tilted from the emission height by a horizontal reference emission angle.

[0097] The output height of the laser beam varies depending on the target height of the work surface currently being cut. The output height of the laser beam is pre-set before the road surface cutting operation so that it becomes a height that allows the work surface to be cut to the target height. In other words, it is adjusted so that the output height of the laser beam changes when the target height of the work surface changes.

[0098] In addition, the laser beam emission angle varies depending on the target left-right inclination of the work surface currently being cut. When cutting the work surface flat, as shown in FIG. 4, the laser beam emission angle is pre-set before the road surface cutting operation so that the laser beam emission direction is horizontal. When cutting the work surface with a target left-right inclination, as shown in FIG. 5, the laser beam emission angle is pre-set before the road surface cutting operation so that the laser beam emission direction is tilted at a certain horizontal angle (α) to allow the work surface to be cut with the target left-right inclination. In other words, the laser beam emission angle is adjusted so that it changes when the target left-right inclination of the work surface changes.

[0099] Additionally, with the laser beam transmission height and transmission angle set, the left height of the road surface crusher is pre-set before the road surface cutting operation to a height such that the reception height of the laser beam received by the first laser receiver (220-1) becomes the reference reception height, and the right height of the road surface crusher is pre-set before the road surface cutting operation to a height such that the reception height of the laser beam received by the second laser receiver (220-2) becomes the reference reception height.

[0100] As illustrated in FIG. 4, when a work surface is to be flattened to a target height using a road surface crusher (100), the laser beam output height of the laser transmitter (210-1) is pre-set before the road surface cutting operation to a height that allows the work surface to be cut to a target height, and the laser beam output angle of the laser transmitter (210-1) is pre-set before the road surface cutting operation so that the direction of the laser beam output is horizontal, and in this state, the laser beam output from the laser transmitter (210-1) is output in a horizontal direction.

[0101] A laser beam transmitted horizontally at a transmission height that allows the work surface to be cut flat to a target height is received by a first laser receiver (220-1) and a second laser receiver (220-2). The operator of the skid loader (1) adjusts the left and right heights of the road surface crusher (100) before the road surface cutting operation by using a left height adjustment means (110) and a right height adjustment means (120) so that the receiving height of the laser beams received by the first laser receiver (220-1) and the second laser receiver (220-2), respectively, becomes the reference receiving height. At this time, by adjusting the left and right heights, the left and right heights of the road surface crusher (100) become equal.

[0102] When the left and right heights of the road surface crusher (100) are pre-set to be equal, the road surface cutting operation begins. During the road surface cutting operation, a laser beam transmitted horizontally from a laser transmitter (210-1) is received by a first laser receiver (220-1) and a second laser receiver (220-2) installed at a certain height on the road surface crusher (100). If the road surface crusher (100) is in a state where it can cut the work surface flat to a target height, the laser beam transmitted from the laser transmitter (210-1) is received at the reference receiving height of the first laser receiver (220-1) and the second laser receiver (220-2), respectively. However, if the road surface crusher (100) is in a state where it cannot cut the work surface flat to a target height, the transmitted laser beam is not received at the reference receiving height of the first laser receiver (220-1) and the second laser receiver (220-2).

[0103] As illustrated in FIG. 5, when cutting a work surface with a target height and target left-right slope using a road surface crusher (100), the laser beam output height of the laser transmitter (210-1) is pre-set before the road surface cutting operation to a height that allows the work surface to be cut to the target height, and the laser beam output angle of the laser transmitter (210-1) is pre-set before the road surface cutting operation so that the rotational output direction of the laser beam is tilted at a certain horizontal angle (α) that allows the work surface to be cut to the target left-right slope. In this state, the laser beam emitted from the laser transmitter (210-1) is emitted in a direction tilted at a certain horizontal angle (α).

[0104] A laser beam transmitted in a direction tilted at a certain angle (α) from a transmission height that allows the work surface to be cut at a target height and a target left-right inclination is received by a first laser receiver (220-1) and a second laser receiver (220-2). The operator of the skid loader (1) adjusts the left-right height of the road surface crusher (100) before the road surface cutting operation by using a left height adjustment means (110) and a right height adjustment means (120) so that the reception height of the laser beams received by the first laser receiver (220-1) and the second laser receiver (220-2), respectively, becomes the reference reception height. At this time, through the adjustment of the left-right height, there is a height difference between the left-right heights of the road surface crusher (100) corresponding to the difference in the target left-right inclination.

[0105] In the first embodiment of the present invention described above, before the road cutting operation, the operator of the skid loader (1) adjusts the left height adjustment means (110) and the right height adjustment means (120) so that the left and right inclinations of the road crusher (100) correspond to the target left and right inclinations, in a state where the receiving height of the laser beam becomes the reference receiving height. However, in the second embodiment of the present invention, before the road cutting operation, the operator of the skid loader (1) adjusts the left and right heights of the road crusher (100) using the left height adjustment means (110) and the right height adjustment means (120) so that the receiving height of the laser beam received by the first laser receiver (220-1) and the second laser receiver (220-2), respectively, becomes the reference receiving height.

[0106] When the left and right heights of the road surface crusher (100) are pre-set to have a height difference corresponding to the target left and right inclination (when the heights of the first laser receiver (220-1) and the second laser receiver (220-2) are pre-set differently), the road surface cutting operation begins. During the road surface cutting operation, a laser beam transmitted from the laser transmitter (210-1) at a certain angle (α) is received by the first laser receiver (220-1) and the second laser receiver (220-2), which are pre-set at different heights. However, if the road surface crusher (100) is in a state where it can cut the work surface at the target height and target left and right inclination, the laser beam transmitted from the laser transmitter (210-1) is received at the reference receiving height of the first laser receiver (220-1) and the second laser receiver (220-2), which are pre-set at different heights, whereas the road surface crusher (100) is working at the target height and target left and right inclination If the surface cannot be cut, the emitted laser beam is not received at the reference reception height of the first laser receiver (220-1) and the second laser receiver (220-2), which are pre-set at different heights.

[0108] The first laser receiver (220-1) is installed at a certain height on the left side of the road surface crusher (100) to receive a laser beam transmitted by the laser transmitter (210-1), and is installed so that the direction of laser beam reception can be adjusted. It is configured to generate information on the height of the left side of the laser beam relative to the reference reception height using the laser beam reception height information and provide it to the control unit (300). The second laser receiver (220-2) is installed at a certain height on the right side of the road surface crusher (100) to receive a laser beam transmitted by the laser transmitter (210-1), and is installed so that the direction of laser beam reception can be adjusted. It is configured to generate information on the height of the right side of the laser beam relative to the reference reception height using the laser beam reception height information and provide it to the control unit (300).

[0109] As shown in FIG. 3, the first laser receiver (220-1) and the second laser receiver (220-2) are installed at the same height on the left and right sides of the road surface crusher (100), and are installed either fixedly or hinge-rotatably.

[0110] In order to accurately receive the laser beam, the first laser receiver (220-1) and the second laser receiver (220-2) must always maintain a vertical state. However, when the first laser receiver (220-1) and the second laser receiver (220-2) are fixedly installed on the road surface crusher (100), the road surface crusher (100) may tilt back and forth depending on the condition of the working surface. Consequently, there is a disadvantage that the first laser receiver (220-1) and the second laser receiver (220-2) cannot maintain a vertical state, but there is an advantage that no separate means for maintaining an upright position is required. To overcome these disadvantages, the first laser receiver (220-1) and the second laser receiver (220-2) can be installed so as to be hinge-rotatable on the road surface crusher (100). When the first laser receiver (220-1) and the second laser receiver (220-2) are installed so as to be hinge-rotatable on the road surface crusher (100), there is a disadvantage that an additional upright-keeping means (such as a tilt detection sensor and an upright-keeping actuator) is required to keep the hinge-rotatable first laser receiver (220-1) and the second laser receiver (220-2) in an upright state at all times, but there is an advantage that the first laser receiver (220-1) and the second laser receiver (220-2) can be kept in a vertical state at all times.

[0112] Additionally, the first laser receiver (220-1) and the second laser receiver (220-2) are installed in the road surface crusher (100) so that the laser beam reception direction can be adjusted. As described above, the laser transmitter (210-1) is installed at a certain distance from the road surface crusher (100) in the front, a certain distance from the road surface crusher (100) in the left, a certain distance from the road surface crusher (100) in the right, a certain distance from the road surface crusher (100) in the left, and a certain distance from the road surface crusher (100) in the right, depending on the conditions of the work site. In order to receive an accurate laser beam corresponding to this, the laser beam reception direction of the first laser receiver (220-1) and the second laser receiver (220-2) must be adjusted. To this end, the first laser receiver (220-1) and the second laser receiver (220-2) are installed so that the laser beam reception direction can be adjusted. A second laser receiver (220-2) is installed in the road surface crusher (100). FIG. 3 illustrates an example of the installation of a first laser receiver (220-1) and a second laser receiver (220-2) in which the laser beam reception direction is adjusted to face forward in response to a laser transmitter (210-1) installed at a certain distance from the road surface crusher (100).

[0114] Additionally, the first laser receiver (220-1) generates information on the left reception height relative to the reference reception height in real time using laser beam reception height information and provides it to the control unit (300), and the second laser receiver (220-2) generates information on the right reception height relative to the reference reception height in real time using laser beam reception height information and provides it to the control unit (300).

[0115] The information regarding the left / right reception height of the laser beam relative to the reference reception height provided to the control unit (300) is information that enables the control unit (300) to determine in real time whether the road surface crusher (100) is in a state where it can cut the work surface flat to the target height or cut at the target height and target left / right slope. The laser beam reception height received by the first laser receiver (220-1) and the second laser receiver (220-2) varies depending on the left / right height of the road surface crusher (100) during the road surface cutting operation. During the road surface cutting operation, if the height of the road surface crusher (100) is at a height that allows the road surface crusher (100) to cut the work surface flat to the target height or cut at the target height and target left / right slope, the laser beam reception height is at the reference reception height. During the road surface cutting operation, if the height of the road surface crusher (100) is at a height that allows the road surface crusher (100) to cut the work surface flat to the target height or cut at the target height and target If the laser beam reception height is at a height where cutting is not possible due to the height and target left / right tilt, the reception height will be higher or lower than the reference reception height.

[0116] Accordingly, the first laser receiver (220-1) and the second laser receiver (220-2) are used to enable the control unit (300) to determine whether the height of the road surface crusher (100) is at a height where the road surface crusher (100) cannot cut the work surface flat to a target height or cannot cut at a target height and target left-right slope during the road surface cutting operation. As shown in FIGS. 4 and 5, the first laser receiver (220-1) generates information on the left receiving height of the laser beam relative to the reference receiving height and provides it to the control unit (300), and the second laser receiver (220-2) generates information on the right receiving height of the laser beam relative to the reference receiving height and provides it to the control unit (300).

[0117] For example, each of the first laser receiver (220-1) and the second laser receiver (220-2) generates information on the height of the laser beam relative to the reference reception height as 0 and provides it to the control unit (300), and if the laser beam reception height is higher than the reference reception height, generates information on the height of the laser beam relative to the reference reception height as HIGH and provides it to the control unit (300), and if the laser beam reception height is lower than the reference reception height, generates information on the height of the laser beam relative to the reference reception height as LOW and provides it to the control unit (300).

[0119] In the second embodiment of the present invention using two laser receivers, the control unit (300) controls the left height adjustment means (110) and the right height adjustment means (120) of the road surface crusher (100) so that when it is determined that at least one of the left / right receiving heights of the laser beam is not at the reference receiving height, the receiving height of the laser beam that is not received at the reference height becomes the reference receiving height, using the left receiving height information of the laser beam relative to the reference receiving height provided by the first laser receiver (220-1) and the right receiving height information of the laser beam relative to the reference receiving height provided by the second laser receiver (220-2).

[0120] That is, so that the road surface crusher (100) can cut the work surface flat to a target height (as shown in FIG. 4, when the laser transmitter (210-1) is pre-set to rotate and transmit the laser beam horizontally from the transmission height) or cut the work surface to a target height and a target left-right inclination (as shown in FIG. 5, when the laser transmitter (210-1) is pre-set to rotate and transmit the laser beam at a horizontal reference transmission angle from the transmission height), the control unit (300) uses the height information provided by the first laser receiver (220-1) and the second laser receiver (220-2) to determine that at least one of the left / right reception heights of the laser beam is not at the reference reception height, and controls the left height adjustment means (110) and the right height adjustment means (120) of the road surface crusher (100) so that the reception height of the laser beam not received at the reference height becomes the reference reception height.

[0122] Specifically, in the second embodiment of the present invention, the control unit (300) is, as shown in FIG. 4 and 5,

[0123] A main controller (310) that, using information on the left receiving height of a laser beam relative to the reference receiving height provided by the first laser receiver (220-1) and information on the right receiving height of a laser beam relative to the reference receiving height provided by the second laser receiver (220-2), generates a first control signal regarding left height adjustment and a second control signal regarding right height adjustment of a road surface crusher (100) so that when it is determined that at least one of the left / right receiving heights of the laser beam is not at the reference receiving height, the receiving height of the laser beam that is not received at the reference height becomes the reference receiving height, and provides these signals to a sub-controller (320); and after providing the first and second control signals, stops providing the first control signal to the sub-controller (320) when it is determined that the left receiving height of the laser beam is at the reference receiving height, and stops providing the second control signal to the sub-controller (320) when it is determined that the right receiving height of the laser beam is at the reference receiving height;

[0124] It is characterized by including a sub-controller (320) that controls the left height adjustment means (110) and the right height adjustment means (120) of the road surface crusher (100) according to the first and second control signals provided by the main controller (310) to adjust the left and right heights of the road surface crusher (100), and stops the left height adjustment of the road surface crusher (100) when the main controller (310) stops providing the first control signal, and stops the right height adjustment of the road surface crusher (100) when the main controller (310) stops providing the second control signal.

[0126] As illustrated in FIG. 4, when a laser transmitter (210-1) horizontally transmits a laser beam (linear laser beam or planar laser beam) at a transmission height that enables the laser to cut the work surface to a target height, the main controller (310) uses the left reception height information (e.g., high, low) relative to the reference reception height provided in real time by the first laser receiver (220-1) and the right reception height information (e.g., high, low) relative to the reference reception height provided in real time by the second laser receiver (220-2). If it is determined that at least one of the left / right reception heights of the laser beam is not at the reference reception height, the main controller (310) generates a first control signal for left height adjustment and a second control signal for right height adjustment of the road surface crusher (100) so that the reception height of the laser beam not at the reference reception height becomes the reference reception height (specifically, so that the information relative to the reference reception height of the laser beam converges to 0), thereby sub Provided by a controller (320).

[0127] For example, the first control signal provided by the main controller (310) to the sub-controller (320) may be a signal to raise the left side of the road surface crusher (100), and the second control signal may be a signal to lower the right side of the road surface crusher (100).

[0128] After providing the first and second control signals to the sub-controller (320), the main controller (310) uses the information on the left reception height relative to the reference reception height provided by the first laser receiver (220-1) and the information on the right reception height relative to the reference reception height provided by the second laser receiver (220-2). If it is determined that the left reception height of the laser beam is at the reference reception height, the main controller (310) stops providing the first control signal to the sub-controller (320), and if it is determined that the right reception height of the laser beam is at the reference reception height, the main controller (310) stops providing the second control signal to the sub-controller (320).

[0129] For example, with reference to FIG. 4, when the first laser receiver (220-1) provides information on the left receiving height of the laser beam relative to the reference receiving height, indicating that the laser beam receiving height is higher than the reference receiving height, and the second laser receiver (220-2) provides information on the right receiving height of the laser beam relative to the reference receiving height, indicating that the laser beam receiving height is lower than the reference receiving height, the main controller (310) provides a first control signal to lower the left side of the road surface crusher (100) and a second control signal to raise the right side to the sub controller (320). Then, when the first laser receiver (220-1) provides information on the left receiving height of the laser beam relative to the reference receiving height, indicating that the laser beam receiving height is at the reference receiving height, the provision of the first control signal to the sub controller (320) is stopped, and when the second laser receiver (220-2) provides information on the right receiving height of the laser beam relative to the reference receiving height, indicating that the laser beam receiving height is at the reference receiving height, the provision of the second control signal to the sub controller (320) is stopped.

[0130] For example, a sub-controller (320) that receives a first control signal to lower the left side of the road surface crusher (100) and a second control signal to raise the right side controls the left height adjustment means (110) installed on the left side of the road surface crusher (100) to lower the left side of the road surface crusher (100) until the main controller (310) stops providing the first control signal, and controls the right height adjustment means (120) installed on the right side of the road surface crusher (100) to raise the right side of the road surface crusher (100) until the main controller (310) stops providing the second control signal, so that the work surface is cut flat to the left and right at the target height.

[0131] That is, if the left side of the road surface crusher (100) is lowered until the first control signal of the main controller (310) is stopped, and the right side of the road surface crusher (100) is raised until the second control signal of the main controller (310) is stopped, the bottom surface of the road surface crusher (100), specifically the bottom surface of the road surface crushing drum (the surface in contact with the work surface for cutting the work surface), becomes horizontal from the ground to the target height, and during the road surface cutting operation, the work surface is cut flat to the target height.

[0133] As illustrated in FIG. 5, when a laser transmitter (210-1) transmits a laser beam (line-type laser beam or planar-type laser beam) at a certain angle (α) at ​​a transmission height that enables the work surface to be cut at a target height and a target left-right inclination, the main controller (310) uses the left reception height information (e.g., high, low) relative to the reference reception height provided in real time by the first laser receiver (220-1) and the right reception height information (e.g., high, low) relative to the reference reception height provided in real time by the second laser receiver (220-2), and if it is determined that at least one of the left / right reception heights of the laser beam is not at the reference reception height, the controller provides a first control signal regarding left height adjustment and a second control regarding right height adjustment of the road surface crusher (100) to make the reception height of the laser beam that is not at the reference reception height become the reference reception height (specifically, to make the reception height information relative to the reference reception height converge to 0). Generate a signal and provide it to the sub-controller (320).

[0134] For example, the first control signal provided by the main controller (310) to the sub-controller (320) may be a signal to raise the left side of the road surface crusher (100), and the second control signal may be a signal to lower the right side of the road surface crusher (100).

[0135] After providing the first and second control signals to the sub-controller (320), the main controller (310) uses the information on the left reception height relative to the reference reception height provided by the first laser receiver (220-1) and the information on the right reception height relative to the reference reception height provided by the second laser receiver (220-2). If it is determined that the left reception height of the laser beam is at the reference reception height, the main controller (310) stops providing the first control signal to the sub-controller (320), and if it is determined that the right reception height of the laser beam is at the reference reception height, the main controller (310) stops providing the second control signal to the sub-controller (320).

[0136] For example, with reference to FIG. 5, when the first laser receiver (220-1) provides information on the left receiving height of the laser beam relative to the reference receiving height, indicating that the laser beam receiving height is higher than the reference receiving height, and the second laser receiver (220-2) provides information on the right receiving height of the laser beam relative to the reference receiving height, indicating that the laser beam receiving height is lower than the reference receiving height, the main controller (310) provides a first control signal to lower the left side of the road surface crusher (100) and a second control signal to raise the right side to the sub controller (320). Then, when the first laser receiver (220-1) provides information on the left receiving height of the laser beam relative to the reference receiving height, indicating that the laser beam receiving height is at the reference receiving height, the provision of the first control signal to the sub controller (320) is stopped, and when the second laser receiver (220-2) provides information on the right receiving height of the laser beam relative to the reference receiving height, indicating that the laser beam receiving height is at the reference receiving height, the provision of the second control signal to the sub controller (320) is stopped.

[0137] For example, a sub-controller (320) that receives a first control signal to lower the left side of the road surface crusher (100) and a second control signal to raise the right side controls the left height adjustment means (110) installed on the left side of the road surface crusher (100) to lower the left side of the road surface crusher (100) until the main controller (310) stops providing the first control signal, and controls the right height adjustment means (120) installed on the right side of the road surface crusher (100) to raise the right side of the road surface crusher (100) until the main controller (310) stops providing the second control signal, so that the work surface is cut to a target height and a target left-right slope.

[0138] That is, when the left side of the road surface crusher (100) is lowered until the first control signal of the main controller (310) is stopped, and the right side of the road surface crusher (100) is raised until the second control signal of the main controller (310) is stopped, the bottom surface of the road surface crusher (100), specifically the bottom surface of the road surface crushing drum (the surface in contact with the work surface for cutting the work surface), is tilted at a target height and a target left-right inclination from the ground, and during the road surface cutting operation, the work surface is cut at a target height and a target left-right inclination.

[0140] Although the technical concept of the present invention has been described above together with the accompanying drawings, this is merely an illustrative description of preferred embodiments of the present invention and is not intended to limit the invention. It is obvious that the scope of the rights of the present invention is not limited to the embodiments but includes modifications made by those skilled in the art within the scope of the technical concept of the present invention. Explanation of the symbols

[0142] 1 : Skid loader 2 : Attachment Equipment 100 : Road shredder 200 : Information Provision Department 300 : Control unit

Claims

Claim 1 A road surface crushing device for a skid loader that uses a laser to adjust the cutting height and cutting left-right inclination of a work surface, comprising: a road surface crusher (100) mounted on a skid loader (1) to cut the work surface flat to a target height or cut the work surface to a target height and target left-right inclination, and including a left height adjustment means (110) and a right height adjustment means (120) capable of individually adjusting the left-right height of the road surface crusher; and an information providing unit (200) that uses a laser transmitter for transmitting a laser beam and a laser receiver for receiving a laser beam to generate information that can determine in real time whether the road surface crusher (100) performing the work surface cutting operation is in a state to cut the work surface flat to a target height or cut the work surface to a target height and target left-right inclination, and provides this information to a control unit (300).The system includes a control unit (300) that controls the left height adjustment means (110) and the right height adjustment means (120) of the road surface crusher (100) so that the road surface crusher (100) can cut the work surface flat to a target height or cut the work surface at a target height and a target left-right inclination using information provided by the information providing unit (200), wherein the laser beam is a line-type laser beam or a planar-type laser beam, and when the laser beam is a line-type laser beam, it is transmitted with a 360-degree rotation, and the information providing unit (200) is installed at a position a certain distance from the road surface crusher (100) to adjust the transmission height of the laser beam, and includes a laser transmitter (210) that transmits the laser beam horizontally at the transmission height, and is installed at a certain height on the road surface crusher (100) to receive the laser beam transmitted by the laser transmitter (210), and is installed so that the laser beam reception direction can be adjusted, and the laser beam A road surface crushing device for a skid loader that controls the cutting height and cutting left / right inclination using a laser, comprising a laser receiver (220) that generates information on the receiving height of a laser beam relative to a reference receiving height in real time using receiving height information and provides it to a control unit (300); wherein the control unit (300), using the information on the receiving height of a laser beam relative to a reference receiving height provided in real time by the laser receiver (220), controls the left height adjustment means (110) and the right height adjustment means (120) of a road surface crusher (100) so that the receiving height of the laser beam becomes the reference receiving height when it is determined that the receiving height of the laser beam is not at the reference receiving height. Claim 2 delete Claim 3 In claim 1, the control unit (300) uses information on the height of the laser beam receiving height relative to the reference receiving height provided in real time by the laser receiver (220) to generate a control signal for height adjustment of the road surface crusher (100) to make the laser beam receiving height the reference receiving height when it is determined that the laser beam receiving height is not at the reference receiving height and provides it to the sub-controller (320), and after providing the control signal, when it is determined that the laser beam receiving height is at the reference receiving height, the main controller (310) stops providing the control signal to the sub-controller (320); and the sub-controller (320) controls the left height adjustment means (110) and the right height adjustment means (120) of the road surface crusher (100) according to the control signal provided by the main controller (310) to adjust the left and right heights of the road surface crusher (100), and stops adjusting the left and right heights of the road surface crusher (100) when the main controller (310) stops providing the control signal. A road surface crushing device for a skid loader that controls the cutting height and cutting left and right inclination using a laser, characterized by including Claim 4 A road surface crushing device for a skid loader that controls the cutting height and cutting left and right inclination using a laser, characterized in that, in claim 1, the transmission height of the laser beam transmitted from the laser transmitter (210) is pre-set before the road surface cutting operation to a height such that the work surface can be cut to a target height, and when the laser beam transmission height is set, the left and right heights of the road surface crusher are pre-set before the road surface cutting operation to a height such that the reception height of the laser beam received by the laser receiver (220) becomes the reference reception height. Claim 5 A road surface crushing device for a skid loader that uses a laser to adjust the cutting height and cutting left-right inclination of a work surface, comprising: a road surface crusher (100) mounted on a skid loader (1) to cut the work surface flat to a target height or cut the work surface to a target height and target left-right inclination, and including a left height adjustment means (110) and a right height adjustment means (120) capable of individually adjusting the left-right height of the road surface crusher; an information providing unit (200) that uses a laser transmitter for transmitting a laser beam and a laser receiver for receiving a laser beam to generate information that can determine in real time whether the road surface crusher (100) performing the work surface cutting operation is in a state to cut the work surface flat to a target height or cut the work surface to a target height and target left-right inclination, and provides this information to a control unit (300); and using the information provided by the information providing unit (200), the road surface crusher (100) cuts the work surface flat to a target height or cuts the work surface to a target height and The system includes a control unit (300) that controls the left height adjustment means (110) and the right height adjustment means (120) of the road surface crusher (100) so as to cut at a target left-right slope, wherein the laser beam is a line-type laser beam or a planar-type laser beam, and when the laser beam is a line-type laser beam, it is transmitted with a 360-degree rotation, and the information providing unit (200) is installed at a certain distance from the road surface crusher (100) so as to adjust the transmission height and transmission angle of the laser beam, and includes a laser transmitter (210-1) that transmits the laser beam horizontally from the transmission height or transmits the laser beam at a horizontal reference transmission angle from the transmission height, and is installed at a certain height on the left side of the road surface crusher (100) so as to receive the laser beam transmitted by the laser transmitter (210-1), and is installed so as to adjust the laser beam reception direction.The system includes a first laser receiver (220-1) that generates information on the left reception height relative to the reference reception height and provides it to the control unit (300), and a second laser receiver (220-2) that is installed at a certain height on the right side of the road surface crusher (100) to receive a laser beam transmitted by a laser transmitter (210-1) and is installed so that the laser beam reception direction can be adjusted, and generates information on the right reception height relative to the reference reception height and provides it to the control unit (300), using the information on the laser beam reception height and provides it to the control unit (300). The control unit (300) uses the information on the left reception height relative to the reference reception height provided by the first laser receiver (220-1) and the information on the right reception height relative to the reference reception height provided by the second laser receiver (220-2), and if it is determined that at least one of the left / right reception heights of the laser beam is not at the reference reception height, the road surface is configured such that the reception height of the laser beam that is not received at the reference height becomes the reference reception height. A road surface crushing device for a skid loader that controls the cutting height and cutting left / right inclination using a laser, characterized by controlling the left height adjustment means (110) and the right height adjustment means (120) of the crusher (100). Claim 6 In claim 5, the control unit (300) uses the left reception height information of the laser beam relative to the reference reception height provided by the first laser receiver (220-1) and the right reception height information of the laser beam relative to the reference reception height provided by the second laser receiver (220-2), and if it is determined that at least one of the left / right reception heights of the laser beam is not at the reference reception height, generates a first control signal regarding left height adjustment and a second control signal regarding right height adjustment of the road surface crusher (100) to make the left / right reception height of the laser beam become the reference reception height, and provides them to the sub-controller (320); and after providing the first and second control signals, if it is determined that the left reception height of the laser beam is at the reference reception height, stops providing the first control signal to the sub-controller (320), and if it is determined that the right reception height of the laser beam is at the reference reception height, stops providing the second control signal to the sub-controller (320); and the main controller (310) provided by the main controller (310). A road surface crushing device for a skid loader that controls cutting height and cutting left and right inclination using a laser, characterized by including a sub-controller (320) that controls the left height adjustment means (110) and the right height adjustment means (120) of a road surface crusher (100) according to first and second control signals to adjust the left and right heights of the road surface crusher (100), and stops the left height adjustment of the road surface crusher (100) when the main controller (310) stops providing the first control signal, and stops the right height adjustment of the road surface crusher (100) when the main controller (310) stops providing the second control signal. Claim 7 A road surface crushing device for a skid loader that controls the cutting height and cutting left / right inclination using a laser, characterized in that, in claim 5, the transmission height of the laser beam transmitted from the laser transmitter (210-1) is pre-set before the road surface cutting operation to a height such that the work surface can be cut to a target height, and the transmission angle of the laser beam transmitted from the laser transmitter (210-1) is pre-set before the road surface cutting operation so that the rotational transmission direction of the laser beam is a horizontal direction or a direction tilted at a certain angle relative to the horizontal so that the work surface can be cut to a target left / right inclination, and with the transmission height and transmission angle of the laser beam set, the left height of the road surface crusher is pre-set before the road surface cutting operation to a height such that the reception height of the laser beam received by the first laser receiver (220-1) becomes the reference reception height, and the right height of the road surface crusher is pre-set before the road surface cutting operation to a height such that the reception height of the laser beam received by the second laser receiver (220-2) becomes the reference reception height. Claim 8 delete

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