Compaction management unit, and compaction management system

Abstract

To provide a compaction management unit and a compaction management system that enable even an inexperienced worker to efficiently perform a compaction work.SOLUTION: On an upper right screen F1, a lateral line s71 of an outer surface s7 of a bucket side figure s61 viewed from the side and a lateral line p1 of a construction surface p are displayed together, and on a lower right screen F2, a front line s72 of the outer surface s7 of a bucket front figure s62 viewed from a driver's seat S3 side and a front line p2 of the construction surface p are displayed together. These upper right screen F1 and lower right screen F2 allow an operator to operate the bucket and accurately align the outer surface of the bucket before a compaction work, even if the bucket and the construction surface are located at a position that cannot be seen directly from the driver's seat. A worker operates the bucket to align the bucket, and then performs a compaction work using the outer surface. By measuring a continuous compaction work time based on an output signal from a pressure sensor, a compaction state of the construction surface can be managed.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a compaction management unit and a compaction management system used when compacting an inclined construction surface using a backhoe. [Background technology]

[0002] Patent document 1 discloses a slope shoulder compaction management device having a compaction means, a moving means for supporting and moving the compaction means, a position measurement means for measuring the position of the compaction means, and a management means for managing the compaction status by the compaction means.

[0003] The management means accumulates the compaction time by the compaction means for each location to be compacted, compares this accumulated time with the required compaction time, and when the accumulated time reaches the required compaction time, displays information to that effect on the display unit. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-26113 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in Patent Document 1, it is not possible to obtain information on the relationship between the inclined construction surface and the excavator bucket, particularly on the side cross-section that the worker cannot see directly from the driver's seat of the excavator, and therefore the worker needs experience to efficiently perform compaction work using the excavator bucket.

[0006] The object of the present invention is to solve the above-mentioned problems and provide a compaction management unit and a compaction management system that allows even inexperienced workers to efficiently perform compaction work by operating a shovel while checking the screen on the monitor unit. [Means for solving the problem]

[0007] The compaction management unit of the present invention, which is intended to achieve the above-mentioned object, is a compaction management unit that can be attached to a shovel equipped with a driver's seat that is operated by an operator, and that performs display control in conjunction with compaction work on a sloped construction surface by the shovel, and is composed of a pair of GPS units that identify a reference position and a forward direction, an inclination sensor that detects the inclination angle of the shovel, a plurality of angle sensors that detect the angle of each of a plurality of rotatable rotating parts of the shovel relative to the surface on which the shovel is placed, a pressure sensor that detects the pressure on the outer surface of the bucket, which is one of the rotating parts, a processing unit that is connected to the GPS unit, the inclination sensor, the angle sensor, and the pressure sensor and processes various types of input information, and a monitor unit that displays the information processed by the processing unit on a screen, and is characterized in that when the integrated value of the input time of the compaction work signal input from the pressure sensor reaches a threshold value, the processing unit determines that the compaction work has ended, and displays on the monitor unit that the compaction work has ended.

[0008] In addition, the compaction management system of the present invention is characterized in that it is composed of the compaction management unit, a driver's seat, and a shovel having a plurality of rotating parts including a bucket, and to which the compaction management unit can be attached. [Effects of the Invention]

[0009] In this way, with the compaction management unit and compaction management system of the present invention, even an inexperienced worker can efficiently perform compaction work by operating the excavator while checking the screen of the monitor unit. In particular, for a bucket and construction surface that are in a position that cannot be directly seen from the driver's seat, the worker can accurately ground the outer surface of the bucket on the construction surface and align the outer surface.

[0010] Furthermore, by managing the compaction state and position of the area where compaction work has been performed by the processing unit, it is possible to prevent insufficient compaction of the construction surface or partial forgetting of compaction. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 2 is a block circuit diagram of the compaction management unit. [Figure 2] FIG. 2 is an explanatory diagram of a backhoe showing a state before the bucket comes into contact with a construction surface. [Figure 3] FIG. 1 is an explanatory diagram of a backhoe showing a state in which the bucket is in contact with a construction surface. [Figure 4] 10 is an example of a screen displayed on a monitor unit. [Figure 5] FIG. 10 is an explanatory diagram of the compaction surface relative to the construction surface shown in mesh. DETAILED DESCRIPTION OF THE INVENTION

[0012] The present invention will be described in detail below based on the illustrated embodiments. Figure 1 is a block circuit diagram of the compaction control unit, which can be attached to a shovel S equipped with a driver's seat for an operator to operate. Figure 2 is an explanatory diagram of the shovel S showing the state before the bucket, which will be described later, comes into contact with the construction surface, and Figure 3 is an explanatory diagram of the shovel S showing the state after the bucket has come into contact with the construction surface.

[0013] The illustrated excavator S, also known as a backhoe, is equipped with a main body S2 that can rotate relative to a crawler S1, a driver's seat S3 that is operated by an operator, and a plurality of rotatable rotating parts connected to the main body S2. These rotating parts are a boom S4, an arm S5, and a bucket S6 connected in this order to the main body S2.

[0014] This bucket S6 is wide and has a flat bottom, i.e., outer surface S7, so that in addition to digging earth and sand, it can also flatten the contact surface by pressing the outer surface S7. In addition, the outer surface S7 has many claws at its tip.

[0015] The construction surface P refers to the slope shoulder, which is an artificial slope created by cutting and filling. The slope shown in the figure is called the slope Pa, the top shoulder is called the slope shoulder Pb, and the bottom is called the slope toe Pc.

[0016] The compaction management unit 10 controls the display associated with the compaction work performed by the excavator S on the inclined construction surface P, and the compaction management system 20 is composed of the above-mentioned excavator S and the compaction management unit 10.

[0017] The compaction management unit 10 includes a pair of GPS units 11 that identify a reference position and a forward direction, an inclination sensor 12 that detects the inclination angle D0 of the excavator S relative to the horizontal plane, a plurality of angle sensors 13 that detect the angle D of each of a plurality of rotatable rotating parts in the excavator S, and a pressure sensor 14 that detects the pressure on the outer surface S7 of the bucket S6, which is one of these rotating parts.

[0018] The GPS unit 11, tilt sensor 12, angle sensor 13, and pressure sensor 14 are connected to a processing unit 15, and the information processed by the processing unit 15 is connected to a monitor unit 16 that displays the information on a screen F, and a wireless communication unit 17. The wireless communication unit 17 is also connected to a management server K outside the management unit 10.

[0019] The multiple angle sensors 13 are composed of a boom angle sensor 131 for detecting an angle D1 of the boom S4 relative to the mounting surface C of the excavator S, an arm angle sensor 132 for detecting an angle D2 of the arm S5 relative to the mounting surface C of the excavator S, and a bucket angle sensor 133 for detecting an angle D3 of the bucket S6 relative to the mounting surface C of the excavator S. Note that these angle sensors 131 to 133 all have the same function.

[0020] The GPS units 11 are attached to the front and rear of the main body S2 of the excavator S, and are capable of identifying the reference position of the excavator S and identifying the forward direction, i.e., the direction in which the bucket S6 is located, from the two pieces of position information. An inclination sensor 12, not shown in the figure, is also attached to the main body S2.

[0021] In addition, a boom angle sensor 131 is fixed to the tip of the boom S4, an arm angle sensor 132 is fixed to the tip of the arm S5, and a bucket angle sensor 133 is fixed to the tip, i.e., the tip of the bucket S6, and a pressure sensor 14 is also attached to the outer surface S7 of the bucket S6.

[0022] The processing unit 15 uses, for example, a general-purpose microcomputer having a calculation unit, a memory unit, an interface for external memory, etc., and the monitor unit 16 uses, for example, a liquid crystal display of about 10 inches, both of which are located inside the driver's seat S3.

[0023] The storage unit of the processing unit 15 stores in advance information on the length of the boom S4, which corresponds to the distance from the boom pin to the arm pin, the length of the arm S5, which corresponds to the distance from the arm pin to the bucket pin, and the length of the rotating part, which is the bucket S6, which corresponds to the distance from the bucket pin to the outer surface S7 of the bucket tip. Furthermore, the storage unit of the processing unit 15 stores three-dimensional position information of the construction surface P to be compacted via an external memory or communication with a management server.

[0024] Then, the processing unit 15 can measure the three-dimensional position of the outer surface S7 of the bucket S6 based on the length information of the rotating unit stored above, the reference position and forward direction information input from the GPS unit 11, the inclination information of the inclination angle D0 input from the inclination sensor 12, and the sensor information of the angles D1 to D3 input from the angle sensors 131 to 133, and can display this on the monitor unit 16 described later.

[0025] Furthermore, the processing unit 15 is capable of displaying on the monitor unit 16 described later based on the above-mentioned pre-stored three-dimensional position information of the construction surface P and the measured three-dimensional position information of the outer surface S7 of the bucket S6.

[0026] Fig. 4 is an example of a screen F displayed on the monitor unit 16. Note that the names of the parts of the excavator S shown in Figs. 2 and 3, which are displayed in uppercase letters, are explained in lowercase letters on the screen F to distinguish them from the names displayed on the screen F.

[0027] Based on the three-dimensional position information of the construction surface P and the three-dimensional position information of the outer surface S7 of the bucket S6, the side line p1 of the construction surface p, which is inclined relative to the upper right screen F1, and the bucket side figure s61 of the bucket S6 are displayed relative to each other. In addition, the front line p2 of the construction surface p as seen from the driver's seat S3 and the bucket front figure s62 are displayed relative to each other on the lower right screen F2.

[0028] The upper right screen F1 displays the side line s71 of the outer surface s7 of the bucket side figure s61 as viewed from the side, and the side line p1 of the construction surface p as viewed from the side, and the lower right screen F2 displays the front line s72 of the outer surface s7 of the bucket front figure s62 as viewed from the driver's seat S3, and the front line p2 of the construction surface p as viewed from the driver's seat S3.

[0029] The operator drives the bucket S6 to make the side line p1 of the construction surface p parallel to the side line s71 indicating the outer surface s7, and also makes the front line p2 of the construction surface p parallel to the front line s72 indicating the outer surface S7. At this time, the distance between these parallel lines is displayed at the bottom of the lower right screen F2.

[0030] In Figure 4, this means that the distance between the three-dimensional position of the construction surface P and the three-dimensional position of the outer surface S7 of the bucket S6 is 0.02 m. When this distance becomes equal to or less than a predetermined value, the alignment of the bucket S6 is complete.

[0031] Regarding the relative display of the outer surface s7 of the bucket s6 and the construction surface p, this may be done only before the bucket S6 comes into contact with the construction surface P as a positioning before the compaction work, or it may be done from before the compaction work, i.e., when there is a gap between the outer surface S7 and the construction surface P, until the compaction work is completed, i.e., when this gap disappears and the outer surface S7 comes into contact with the construction surface P.

[0032] The left screen F3 displays an overhead view of a flat excavator s on a two-dimensional map including an inclined construction surface p. The location of the construction surface p that requires compaction work is displayed as a band sandwiched between boundary lines L1 and L2, as shown in the figure. The area of ​​this band corresponds to the slope Pa shown in Figures 2 and 3, with boundary line L1 corresponding to the slope shoulder Pb and boundary line L2 corresponding to the slope toe Pc.

[0033] When the worker in the driver's seat S3 operates and moves the excavator S, the excavator s on the left screen F3 also moves. The map of the surrounding area moves with the excavator s at the center.

[0034] Figure 5 is an explanatory diagram of the compaction surface T of the bucket s6 relative to the construction surface p displayed in mesh. The inclined construction surface p on the left screen F3 is a mesh surface divided into square blocks B with a side length of, for example, 0.25 m as shown in Figure 5, and the compaction surface T by the outer surface s7 is displayed on this construction surface p.

[0035] Figure 5 shows a mesh surface viewed from above in a direction perpendicular to the inclined construction surface p, with block B being a square. When the outer surface s7 of bucket s6, which is parallel to the construction surface p, compacts only a portion of block B, it is determined that the entire block B has been compacted.

[0036] Therefore, when compacting with the outer surface s7 of the bucket s6, a compaction surface T shown by a rectangular diagonal line composed of multiple blocks B is formed, and this compaction surface T is displayed in different colors depending on the time of the compaction work, as shown in the left screen F3.

[0037] The vertical width of the compaction surface T on the construction surface p on the left screen F3 changes depending on the inclination angle of the construction surface p. If the inclination angle is steep, the vertical width of the compaction surface T is displayed as short, and if the inclination angle is gentle, the vertical width of the compaction surface T is displayed as long.

[0038] The worker moves the excavator S while looking at the left screen F3, and then operates the bucket s6 to move it onto the construction surface p, which is displayed in a reference color, for example, white. After moving the excavator S and roughly operating the bucket s6 using the left screen F3 in this way, the worker uses the above-mentioned upper right screen F1 and lower right screen F2 to accurately align the outer surface s7 of the bucket s6.

[0039] Using the upper right screen F1 and the lower right screen F2, the operator can operate the bucket S6 to accurately compact the outer surface S7 and align it before work, even if the bucket S6 and construction surface P are in a position that cannot be seen directly from the driver's seat S3.

[0040] In this way, the worker operates the bucket S6 to align it so that the side line p1 of the construction surface p and the side line s71 indicating the outer surface S7 are close to each other, and further so that the front line p2 of the construction surface p and the front line s72 indicating the outer surface S7 are close to each other, and then performs compaction work using the outer surface S7.

[0041] The compaction operation signal at this time is an output signal from a pressure sensor 14 provided on the outer surface S7, and the processing unit 15 can manage the compaction state of the construction surface P by measuring the continuous compaction operation time based on this output signal.

[0042] Based on the output signal from the pressure sensor 14, the processing unit 15 measures the continuous compaction work time at the compaction location of the construction surface p, and displays the construction surface p in different colors depending on the compaction work time, as shown on the left screen F3.

[0043] The display color changes from yellow to orange to red depending on the number of seconds the compaction is taking, with red indicating that compaction is complete. In this way, the mesh color is displayed in stages according to the magnitude of the integrated value, which is the integral time associated with the degree of work until the compaction work is completed.

[0044] After checking the display color indicating the completion of compaction, the worker moves the bucket S6 to the compaction location on the construction surface p, which has the reference color before the compaction work and is adjacent to the compaction surface T that has turned red, and performs the compaction work using the above-mentioned screen F. The worker repeats this work for the entire surface of the construction surface p.

[0045] At this time, along with the display of the compaction work completion color, the worker may be notified by text or voice that the compaction work is complete. Similarly, before the compaction work, the side line p1 of the construction surface p on the upper right screen F1 and the side line s71 indicating the outer surface s7 are made parallel, and the front line p2 of the construction surface p on the lower right screen F2 and the front line s72 indicating the outer surface S7 are made parallel, and the distance between these parallel lines is made equal to or less than a predetermined value, the worker may be notified by text or voice that the alignment of the bucket S6 is complete.

[0046] Furthermore, the processing unit 15 may change the threshold value for terminating the compaction work according to the inclination angle of the construction surface P, which is stored in advance. The greater the inclination angle of the construction surface P, the greater the threshold value for terminating the compaction work. In other words, the greater the inclination angle of the construction surface P, the greater the integrated value of the time for inputting the compaction work signal, which is the threshold value. This is because the steeper the inclination angle, the lower the pressure in the vertical direction, and therefore it is necessary to perform the compaction work for a long time to apply sufficient pressure in the vertical direction.

[0047] The processing unit 15 can communicate with an external management server K via a network through the wireless communication unit 17. This management server K can centrally manage the compaction work status of the construction surface P transmitted from one or more compaction management units 10.

[0048] Furthermore, the compaction management units 10 can communicate with each other via the wireless communication unit 17 to share the status of the compaction work on the construction surface P. When the compaction management units 10 are operated independently, it is not necessary to provide the wireless communication unit 17.

[0049] In this way, with the compaction management unit 10 and the compaction management system 20, even an inexperienced worker can efficiently perform compaction work by operating the excavator S while checking the screen of the monitor unit 16. In particular, for the bucket S6 and construction surface P that are in a position that cannot be directly seen from the driver's seat, the worker can accurately ground the outer surface S7 of the bucket S6 on the construction surface P and align the outer surface S7.

[0050] Furthermore, by managing the compaction state and position of the area where compaction work has been performed by the processing unit 15, it is possible to prevent insufficient compaction of the construction surface P or partial forgetting of compaction. [Explanation of symbols]

[0051] 10 Compaction Control Unit 11 GPS section 12 Inclination sensor 13 Angle Sensor 14 Pressure Sensor 15 Processing section 16 Monitor section 20 Compaction Management System Block B F screen D0 Inclination angle D1~D3 angles P, p construction side S, s Excavator S2 main body S3 driver's seat S6, s6 bucket s61 Bucket side view s62 bucket front view S7, s7 outer surface s71 lateral line s72 Front Line T compaction surface

Claims

1. A compaction management unit that can be attached to a shovel equipped with a driver's seat operated by a worker and performs display control associated with compaction work on an inclined construction surface by the shovel, The system comprises a pair of GPS units that identify a reference position and a forward direction, an inclination sensor that detects the inclination angle of the excavator, a plurality of angle sensors that detect the angles of each of a plurality of rotatable rotating parts of the excavator relative to the loading surface of the excavator, a pressure sensor that detects the pressure on the outer surface of a bucket that is one of the rotating parts, a processing unit that is connected to the GPS units, the inclination sensor, the angle sensor, and the pressure sensor, and processes various types of information that are input, and a monitor unit that displays information processed by the processing unit on a screen, The processing unit is characterized in that when the integrated value of the input time of the compaction work signal input from the pressure sensor reaches a threshold value, it determines that the compaction work has ended and displays on the monitor unit that the compaction work has ended.

2. The compaction management unit described in claim 1, characterized in that the processing unit measures the three-dimensional position of the outer surface of the bucket based on pre-stored length information of the rotating part, reference position and forward direction information from the GPS unit, inclination information from the inclination sensor, and angle information from the angle sensor, and causes the monitor unit to display the position of the outer surface of the bucket on a map on the screen of the monitor unit.

3. The compaction management unit described in claim 2, characterized in that the processing unit displays a side view of the inclined construction surface and a side view of the bucket relative to each other on the screen of the monitor unit based on pre-stored three-dimensional position information of the construction surface on which the compaction work is performed and three-dimensional position information of the outer surface of the bucket.

4. The compaction management unit described in claim 3, characterized in that the processing unit displays, on the screen of the monitor unit, the side lines of the outer surface of the bucket side figure as viewed from the side and the side lines of the construction surface as viewed from the side, and the front lines of the outer surface of the bucket front figure as viewed from the driver's seat side and the front lines of the construction surface as viewed from the driver's seat side.

5. A compaction management unit as described in any one of claims 1 to 4, characterized in that the processing unit changes the threshold value for terminating the compaction work depending on the inclination angle of the construction surface.

6. The compaction management unit according to claim 5, wherein the processing unit increases the threshold value for terminating the compaction work as the inclination angle of the construction surface increases.

7. The construction surface is a mesh surface divided into square blocks of a predetermined length, the processing unit determines that the entire block has been compacted when the outer surface of the bucket, which is parallel to the construction surface, has compacted a part of the block; A compaction management unit as described in any one of claims 1 to 4, characterized in that a rectangular compaction surface composed of a plurality of the blocks is displayed on the monitor unit.

8. The compaction management unit according to claim 7, characterized in that the processing unit changes the color of the compacted surface to a different color before and after the compaction work is completed as an indication of the completion of the compaction work.

9. The compaction management unit according to claim 8, characterized in that the processing unit gradually changes the color of the compacted surface depending on the magnitude of the integrated value associated with the degree of work until the compaction work is completed.

10. A compaction management unit according to any one of claims 1 to 4; A compaction management system characterized by comprising the driver's seat and a shovel having a plurality of rotating parts including the bucket and to which the compaction management unit can be attached.

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