JP2013209843A - Slope compaction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slope compaction device capable of: evaluating a compaction degree of a slope on the basis of a value according to an increase in hardness of the slope through blows of a vibration plate; uniformly compacting an entire region of the slope; and reliably preventing uneven or insufficient compaction of the slope as well as waste of time due to excessive compaction.SOLUTION: A slope compaction device 2 has a vibration plate 22 to compact a slope by applying vibrational blows of a vibration generating device 20. The slope compaction device 2 also has: a plate spring 23 with a base edge thereof attached to the vibration plate 22; a penetration body 24 which is energized by elastic force of the plate spring 23 so that a tip portion thereof is inserted through an opening 225 and projected outward and is freely movable in a vertical direction through the opening hole 225; and a first strain gauge 25 which is attached to the plate spring 23 and continuously measures in real time a degree of elastic deformation of the plate spring 23 which elastically deforms due to reaction force acting thereon from a slope N through the penetration body 24 every time the vibration plate 22 delivers the vibration blow.

Description

  The present invention provides a slope compaction equipped with a vibration plate that is mounted on the tip of an arm of a self-propelled excavating machine such as a backhoe and that is compacted by striking it by vibration on a slope that has been embanked in road construction or construction work. It relates to the device.

  In general, a vibrating roller or the like is used when compacting a flat ground, that is, a flat surface. For quality control of compaction on a flat surface by this vibrating roller, a method is applied that measures the vibration given by the vibrating roller with an accelerometer and uses the frequency change from the ground response value obtained by the frequency analysis. . This technique focuses on the appearance of high-frequency components in the vibration spectrum of the roller as the flat surface is compacted and the ground becomes harder. Then, frequency analysis of the vibration spectrum of the roller is performed in real time, and the degree of compaction is evaluated based on an index obtained by quantifying the frequency characteristics, such as CMV, distortion rate, and disturbance rate. In this case, CMV adds the ratio of the first harmonic component to the fundamental frequency component of the vibration roller, and the distortion rate and the disturbance rate are added to the second or higher order as the harmonic component. Evaluation is also made by adding fractional harmonics.

  On the other hand, since the embankment slope is a slope, it cannot be compacted by a vibrating roller, and therefore a slope compaction apparatus as shown in Patent Document 1 has been used. This slope compaction device is provided at the tip of an arm such as a backhoe, which is a power excavator type excavating machine that self-propels on an endless track. The slope compaction by the slope compaction device is to transmit the vibration from the vibration generator provided at the tip of the arm to the diaphragm and continuously apply the impact by the vibration of the diaphragm to the slope. Is done by.

Japanese Patent Laid-Open No. 7-166669

  By the way, when the slope is compacted with the diaphragm, the current state is that the degree of compaction is not evaluated, and from this point, the work is entrusted to a skilled worker with long experience. For this reason, if an inexperienced operator compacts the slope, it is difficult to compact all areas of the slope uniformly, resulting in unevenness in the slope or excessively compacting the slope. May be necessary. Moreover, depending on the soil quality, it takes skill to compact the slope, and it is necessary to pay attention to unevenness of the slope and excessive or insufficient compaction.

  Therefore, it is conceivable to apply a technique for evaluating the compaction degree on the flat surface to the compaction of the slope. In other words, it is conceivable to evaluate the degree of compaction of the slope by measuring the response from the slope that acts when the diaphragm is struck by vibration.

  However, when hitting with a diaphragm, the hitting motion itself is a one-way swing method and the hitting impact is too strong, so the response from the ground side can hardly be measured. The degree of compaction of the slope used cannot be evaluated.

  The present invention has been made in view of such points, and the object of the present invention is to enable evaluation of the degree of compaction of the slope based on the response from the ground due to the impact of the diaphragm, and an inexperienced worker Even in this case, the entire slope area can be compacted uniformly, and the unevenness of the slope, lack of compaction, and excessive waste of time due to excessive compaction can be surely prevented regardless of the soil texture. It is an object of the present invention to provide a slope compaction device that can be used.

  In order to achieve the above object, in the present invention, a slope compaction device is provided with a vibration plate that is attached to the tip of an arm of a self-propelled excavating machine and compacts by applying a blow from the vibration generator to the slope. Assuming Then, an elastically deformable elastic member provided on the vibration plate and a tip inserted through an opening hole opened in the vibration plate are biased by the elastic force of the elastic member so as to protrude outward. An elastic member that is elastically deformed by a reaction force from a slope that acts through the penetrating body every time it is struck by vibration of the diaphragm And measuring means for continuously measuring the degree in real time.

  Further, a determination unit may be provided that inputs a measurement value from the measurement unit and determines that the slope compaction has been completed when the measurement value reaches a predetermined value.

  Further, the determination means includes a correction means for correcting a measured value of the degree of elastic deformation of the elastic member based on an advancing / retreating moving average value when the penetrating body advances / retreats in / out by an impact caused by vibration of the diaphragm. It may be provided.

  In addition, an axial force detection unit that detects an axial force from the arm that acts when striking due to vibration of the diaphragm is provided. And the axial force from the said arm may be adjusted so that the detected value of the said axial force detection means may become an appropriate value.

  In addition, a GPS receiver for a global positioning system is provided that measures the position of each area of the slope divided into a plurality of areas according to the size of the diaphragm based on radio waves from a satellite. Then, when the determination unit determines that the slope compaction has been completed, based on the signal received by the GPS receiver, the diaphragm is still compacted from the respective regions. The diaphragm may be sequentially moved to an unconsolidated region that is not yet compacted by the diaphragm.

  In addition, a mounting portion for detachably mounting the diaphragm may be provided at the tip of the arm of the excavating machine.

  Further, as the elastic member, a leaf spring in which a base end is cantilevered on the diaphragm and the penetrating body is provided on the distal end side may be applied.

  On the other hand, a coil spring that is contracted between the diaphragm and the penetrating body may be applied as the elastic member.

In short, the penetrating body provided through the elastic member on the diaphragm is penetrated so that the tip protrudes outward through the opening hole of the diaphragm, and acts through the penetrating body every time the diaphragm is hit. The degree of elastic deformation of the elastic member that is elastically deformed by the reaction force from the slope is measured continuously by the measuring means. That is, paying attention to the fact that “ground hardness” is related to “consolidation”, by measuring the amount of deformation of the elastic member that deforms according to the reaction force when the penetrating body penetrates the ground , "Ground hardness", and in other words, "Consolidation" is evaluated.
As a result, the degree of consolidation of the slope by the diaphragm can be understood based on the degree of elastic deformation of the elastic member, and even an inexperienced operator can uniformly compact all areas of the slope. Unevenness, insufficient compaction, and excessive waste of time due to excessive compaction can be reliably prevented.

  In addition, when the continuous measurement value from the measurement means reaches a predetermined value, the determination means determines that the slope has been compacted by the diaphragm, thereby preventing excessive compaction of the slope. In addition, the lack of compaction of the slope is surely prevented. As a result, the entire area of the slope can be more uniformly compacted, and the working time can be shortened by eliminating unevenness of the slope.

  Further, by correcting the measured value of the degree of elastic deformation of the elastic member based on the advancing / retreating moving average value when the penetrating body moves forward / backward due to striking due to the vibration of the diaphragm, the correcting means corrects the measured value of the elastic member during measurement by the measuring means. Noise due to the impact of the diaphragm that becomes a disturbance can be efficiently removed, and the measured value of the degree of elastic deformation of the elastic member can be obtained as an accurate value, so that the determination of the completion of the compaction of the slope by the determination means can be performed more accurately. it can.

  In addition, by adjusting the axial force from the arm acting at the time of striking due to vibration of the diaphragm to an appropriate value, the optimum loading force is applied based on the detection value of the axial force detection means, and the slope is tightened. Hardening can be performed efficiently.

  Further, when the determination means determines that the slope compaction has been completed, the vibration is moved by moving the diaphragm from each region to the uncompacted region based on the signal received by the GPS receiver. By compacting with a plate, each area of the slope can be compacted smoothly.

  Further, by providing a mounting portion for detachably mounting the diaphragm at the tip of the arm of the excavating machine, the diaphragm can be smoothly attached to and detached from the arm of the excavating machine.

  Further, as the elastic member, a leaf spring in which the base end is cantilevered on the diaphragm and a penetrating body is provided on the distal end side is applied, so that the penetrating body is placed on the distal end side of the leaf spring that cantilevered the base end. The elastic member can be configured with a simple structure that is simply provided.

  On the other hand, by applying a coil spring that is compacted between the diaphragm and the penetrating body as an elastic member, the structure is simple and only the coil spring is compacted between the diaphragm and the penetrating body. The elastic member can be configured, and the elastic force of the elastic member can be easily adjusted.

It is a schematic explanatory drawing of the backhoe provided with the slope compaction apparatus which concerns on the 1st Embodiment of this invention. It is the top view seen from the upper side in the state which attached the diaphragm of the slope compaction apparatus of FIG. 1 to the vibration provision axis | shaft of the arm front end side. FIG. 3 is a partially cutaway side view of the diaphragm of FIG. 2. FIG. 3 is a plan view of a state in which the diaphragm of FIG. 2 is detached from a vibration applying shaft on the arm tip side. It is a side view of the bracket for attaching the diaphragm of FIG. 2 to the vibration provision axis | shaft of an arm front end side. It is explanatory drawing which shows the relationship between the amount of floating of a penetration body, and the amount of subsidence, (a) is the state before the compaction operation of a slope, (b) is the initial state of the compaction work of a slope, (c). Indicates the completed state of the slope compaction work. It is explanatory drawing explaining the method of removing a noise from the amount of advancing / retreating movement of a penetrating body when measuring the elastic deformation degree of the leaf | plate spring in 10 second after the compaction start by impact | shock, (a) is a figure of the penetrating body by impact Explanatory drawing which shows the characteristic of the amount of advance / retreat in the inside / outside direction for every time unit continuously, (b) is the explanation which shows the characteristic of the advancing / retreating average value of ten inward / outward directions for every time unit of the penetration body continuously Figure, (c) is an explanatory diagram continuously showing the characteristics of the forward and backward average values of 50 inward and outward directions for each time unit of the penetrating body, and (d) is 100 inner and outer front and rear for each time unit of the penetrating body. The explanatory view which shows the characteristic of the advance and retreat average value to the direction continuously is shown, respectively. It is explanatory drawing which shows the slope divided | segmented into the several area | region. It is explanatory drawing of the display apparatus which displays the progress state of the compacting operation | work in each area | region of a slope. It is the top view seen from the upper part in the state which attached the diaphragm of the slope compaction apparatus which concerns on the 2nd Embodiment of this invention to the vibration provision shaft. FIG. 11 is a partially cutaway side view of the diaphragm of FIG. 10.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  First, FIG. 1 is a schematic explanatory view of a backhoe provided with a slope compaction device according to the first embodiment of the present invention, and FIG. 2 is a vibration imparting shaft on the arm tip side with a diaphragm of the slope compaction device. FIG. 3 is a partially cutaway side view of the diaphragm, FIG. 4 is a plan view with the diaphragm removed from the vibration applying shaft on the arm tip side, and FIG. 5 is a vibration view. The side view of the bracket for attaching a board to the vibration provision axis | shaft of the arm front end side is shown, respectively.

  A backhoe as an excavating machine denoted by reference numeral 1 in FIG. 1 includes a lower traveling body 12 having a pair of crawlers 11, and an upper revolving body 13 provided on the upper portion of the lower traveling body 12 so that an operator can get on. And. A hydraulic pump (not shown) and an engine for driving the hydraulic pump are disposed on the rear side of the upper swing body 13.

  The backhoe 1 is rotatably supported by the upper swing body 13 and is tilted by the boom cylinder 14. The backhoe 1 is rotatably supported by the tip of the boom 15 and is pivoted by the arm cylinder 16. 17 and an attachment 19 that is pivotally supported at the tip of the arm 17 and is rocked by a rocking cylinder 18. The fixture 19 is provided with a slope compaction device 2. The slope compaction device 2 includes a hydraulic vibration generating device 20 that generates vibration, a tip that protrudes from the vibration generating device 20, a vibration applying shaft 21 that applies vibration from the vibration generating device 20, and the vibration. A vibration plate 22 is attached to the tip of the imparting shaft 21 so as to be detachable and applies a vibration hitting to the ground surface of the slope N, and the impact from the vibration generator 20 is continuously applied to the ground of the slope N. So that it can be compacted.

  As an example of the vibration generating device 20, there is a device that periodically moves a rod-shaped knocker back and forth with a hydraulic cylinder, that is, a device that strikes the vibration applying shaft 21 at a high speed with a rod-shaped knocker. Note that a pneumatic vibration generator using a pneumatic cylinder instead of a hydraulic cylinder or a vibrator-type vibration generator that vibrates electrically may be used.

  As shown in FIGS. 2 to 4, the diaphragm 22 is connected to a main body plate 220 having a substantially square shape in a plan view and a peripheral edge of the main body plate 220, and extends obliquely upward and outward from the peripheral edge 4. The extending pieces 221, 221,. Among the extended pieces 221, the extended pieces 221 and 221 adjacent to each other are joined to each other at the four corners of the main body plate 220. On the upper surface of the main body plate 220, four vertical ribs 222, 222,... That extend diagonally from the four corners toward the center are erected. Each of the vertical ribs 222 is set to a height at which the outer end substantially coincides with the extending piece 221, while the inner end is set to become higher toward the center. In addition, three bolt holes (not shown) are connected to the inner end of each vertical rib 222 in the vertical direction. And the diaphragm 22 (main body plate 220, each extending piece 221 and each vertical rib 222) is shape | molded by the general structural rolled steel (SS400). In this case, one of the vertical ribs 222 of the two vertical ribs 222, 222 extending on the same diagonal line, and the other vertical surface of the other vertical rib 222 are positioned on the same diagonal line. ing.

  As shown in FIG. 5, a mounting portion 210 that detachably mounts the diaphragm 22 is provided at the tip of the vibration applying shaft 21 that is the tip of the arm 17. The mounting portion 210 includes four projecting pieces 211, 211,... Projecting from the outer peripheral surface of the vibration applying shaft 21. Each protruding piece 211 is provided at equal intervals every 90 ° in the circumferential direction of the vibration applying shaft 21 and extends radially. Three bolt holes 215, 215,... Corresponding to the bolt holes at the inner ends of the vertical ribs 222 are connected to the protruding pieces 211 in the vertical direction. The mounting portion 210 is screwed with a bolt 212 and a nut 213 inserted in a state where the three bolt holes of each projecting piece 211 and the bolt holes at the inner ends of the vertical ribs 222 are aligned. The diaphragm 22 is detachably attached to the tip of the vibration applying shaft 21. In this case, the two protruding pieces 211 extending on the same diagonal line of the main body plate 220 of the protruding pieces 211 are the same as the one of the two vertical ribs 222, 222 extending on the same diagonal line. It is screwed by a bolt 212 and a nut 213 in a state of being in close contact with the other side vertical surface of the one side vertical surface or the other vertical rib 222.

  Further, the slope compaction device 2 includes a substantially rectangular plate spring 23 as an elastically deformable elastic member attached to the inner surface (upper surface in FIG. 3) of the diaphragm 22, and the plate spring 23. A substantially spindle-shaped penetrating body 24 attached thereto and a first strain gauge 25 as a measuring means for measuring the degree of elastic deformation of the leaf spring 23 when the penetrating body 24 is lifted by striking the diaphragm 22 are provided. .

  The leaf spring 23 is made of a cold-rolled steel strip for spring, and a base end is fixed to the peripheral side of the diaphragm 22 with a bolt 226 and a distal end side extends toward the center of the diaphragm 22. Further, the penetrating body 24 is fixed to the front end side of the lower surface of the leaf spring 23 with a bolt 224. The penetrating body 24 has a tip protruding downward (outward) through an opening hole 225 opening in the main body plate 220 of the diaphragm 22. In this case, the penetrating body 24 has its distal end positioned at the lowest position through the opening hole 225 in a state where the leaf spring 23 is lying down along the main body plate 220 of the diaphragm 22 by the elastic force.

  FIGS. 6A and 6B are explanatory diagrams showing the relationship between the amount d of lifting of the penetrating body 24 and the amount of subsidence S, where FIG. 6A shows a state before the slope N is compacted, and FIG. 6B shows how the slope N is compacted. The initial state of the work, (c) shows the completed state of the slope N compaction work.

In (a) to (c) of FIG. 6, when the maximum allowable settlement height of the penetrating body 24 is T,
T = S + d, and the relationship S = T-d is established. Therefore, if the maximum allowable settlement height T and the floating amount d of the penetrating body 24 are known, the sinking amount S of the penetrating body 24 is naturally determined.

  The first strain gauge 25 is affixed in the vicinity of the bolt 226 on the base end side of the upper surface of the leaf spring 23, and the amount of strain (bending) at the portion where the leaf spring 23 is most elastically deformed by striking the diaphragm 22. The measurement, that is, the degree of elastic deformation (lifting amount) of the leaf spring 23 due to the floating of the penetrating body 24 is measured.

  Further, the slope compaction device 2 includes a determination unit 26 that determines whether the slope N is compacted by the diaphragm 22. The determination means 26 inputs a measurement value from the first strain gauge 25, and determines that the compaction of the slope N has been completed when the measurement value reaches a specified value. This specified value corresponds to a measured value obtained when the slope N is sufficiently compacted, and the ground is sufficiently compacted in the vicinity before the slope N is compacted. The measured value measured by the first strain gauge 25 when applied can be applied. And the determination means 26 is provided in the cabin 130 for the operator of the upper turning body 13 to board. A display device 131 is installed in the cabin 130, and a determination unit 26 is connected to the display device 131.

  A second strain gauge 27 serving as an axial force detecting means for detecting an axial force from the arm 17 acting at the time of striking due to vibration of the diaphragm 22 is attached to the middle portion of the vibration applying shaft 21. Further, a camera 28 that captures an inclination angle of the slope N is attached to the fixture 19 at the tip of the arm 17. The first and second strain gauges 25 and 27 and the camera 28 are connected to a data transmission device 29 provided on the fixture 19, and the measurement values from the first and second strain gauges 25 and 27 and the camera 28 are connected. The imaging data of the inclination angle of the slope N is transmitted wirelessly. At this time, based on the imaging data of the inclination angle of the normal plane N from the camera 28, the fixture 19 is swung by the swing cylinder 18 so that the main body plate 220 of the diaphragm 22 is parallel to the normal plane N. I am letting.

  A data receiving device 30 that receives data transmitted from the data transmitting device 29 is provided on the top surface of the cabin 130. The data receiving device 30 is connected to the determination unit 26, and the measurement values from the first and second strain gauges 25 and 27 and the imaging data of the inclination angle of the slope N from the camera 28 are input to the determination unit 26. . Note that the data transmission device 29 and the data reception device 30 are not indispensable components, and the measurement values from the first and second strain gauges 25 and 27 and the imaging data of the inclination angle of the slope N from the camera 28 are wired. It may be input to the determination means 26.

  The determination unit 26 includes a correction unit 31 that corrects the degree of elastic deformation of the leaf spring 23 based on the measurement value from the first strain gauge 25. The correction means 31 corrects the degree of elastic deformation of the leaf spring 23 based on the advancing / retreating moving average value when the penetrating body 24 moves back and forth in the vertical direction (inside / outside direction) due to the impact of vibration of the diaphragm 22.

  Specifically, a method for removing noise from the amount of advancement / retraction movement (strain amount) of the penetrating body 24 when measuring the degree of elastic deformation of the leaf spring 23 in 10 seconds after the start of compaction by striking in FIG. 7 will be described. This will be described using an explanatory diagram. In FIG. 7, (a) is an explanatory view continuously showing the characteristic of the amount of advancement / retraction of the penetrating body 24 in the inner and outer direction for each time unit due to impact, and (b) is the front and rear ten pieces per time unit of the penetrating body 24. Explanatory drawing which shows continuously the characteristic of the advancing / retreating average value to the inside / outside direction of FIG. 10, (c) is explanatory drawing which shows continuously the characteristic of the advancing / retreating average value of the front and back 50 pieces for every time unit of the penetration body 24 (D) has each shown the explanatory drawing which shows continuously the characteristic of the advancing / retreating average value of 100 in the front and back for every time unit of the penetration body 24. FIG.

  In the present embodiment, the vibration of the axial force acting on the vibration applying shaft 21 and the vibration of the leaf spring 23 coincide with each other at a frequency of about 13 Hz, and the sampling rate by the first strain gauge 25 is 0.5 ms (2000 pieces). / Second). As shown in FIG. 7A, the raw data cannot evaluate the degree of compaction of the slope N because the amplitude of the leaf spring 23 is too large. Further, as shown in FIG. 7B, the moving average value of ± 10 indicates the moving average value of the leaf spring 23 at 10/2000 = 0.005 seconds. Further, as shown in FIG. 7C, the moving average value of ± 50 indicates the moving average value of the leaf spring 23 at 50/2000 = 0.025 seconds. As shown in FIG. 7D, the moving average value of ± 100 indicates the moving average value of the leaf spring 23 at 100/2000 = 0.05 seconds. As shown in FIG. 7 (d), with the moving average value of the leaf spring 23 in 0.05 seconds, the amplitude of the leaf spring 23 is optimal with the disturbance suppressed. From this, the leaf spring 23 in 0.05 seconds corrected by the correction means 31 is used as the average value of the advance / retreat movement for each time when the penetrating body 24 moves back and forth in the vertical direction by the impact of the vibration of the diaphragm 22. The correction means 31 of this embodiment corrects the degree of elastic deformation of the leaf spring 23 based on this. The correction of the degree of elastic deformation by applying the moving average value of the leaf spring 23 by the correcting means 31 is merely an example, and a plate spring having an optimal elastic coefficient corresponding to the hardness of the ground is used to suppress the resonance of the leaf spring. In addition, the degree of elastic deformation to which the moving average value of the leaf spring is applied may be corrected.

  FIG. 8 is an explanatory view showing the slope N divided into a plurality of areas, and FIG. 9 is an explanatory view of the display device 131 that displays the progress of the compaction work in each area of the slope N.

  As shown in FIG. 8, the slope N is divided into a plurality of regions (only 12 regions are shown in FIG. 8) according to the size of the main body plate 220 of the diaphragm 22. As shown in FIG. 9, the display device 131 displays the progress of the compaction work in each of the 12 areas of the slope N.

  Further, the slope compaction device 2 is a global positioning device that measures the position of each area of the slope N divided into a plurality of areas according to the size of the main body plate 220 of the diaphragm 22 based on radio waves from the satellite. An RTK-GPS receiver (not shown) for the system and a GPS compass (not shown) for detecting the position and orientation of the backhoe 1 (orientation of the upper swing body 13) are provided. Note that a gyro compass may be provided instead of the GPS compass.

  The cabin 130 is provided with a control device (not shown) connected to the determination means 26 and the display device 131. When the determination means 26 determines that the slope N has been compacted, the control device has not yet performed compaction by the diaphragm from each area based on the signal received by the GPS receiver. A non-consolidated region that has not been displayed is displayed on the display device 131. Then, the operator sequentially moves the diaphragm 22 to the unconsolidated region so that the diaphragm 22 is compacted.

  In addition, when the measurement value of the second strain gauge 27 (axial force from the arm 17) is input, the determination unit 26 controls the expansion / contraction operation of the swing cylinder 18 that swings the fixture 19, and the diaphragm The loading force (axial force) of the arm 17 is adjusted so as to be an appropriate value at the time of striking with the vibration 22.

  Therefore, in the present embodiment, the penetrating body 24 provided on the diaphragm 22 via the leaf spring 23 is inserted through the opening hole 225 of the diaphragm 22 so that the tip protrudes outward, and the diaphragm 22 By continuously measuring the degree of elastic deformation of the leaf spring 23 that is elastically deformed by the reaction force from the slope N acting through the penetrating body 24 for each impact by the first strain gauge 25, the impact of the diaphragm 22 Thus, the degree of compaction of the slope N is evaluated based on the measured value of the degree of elastic deformation of the leaf spring 23 according to the increase in the hardness of the slope N. Specifically, the degree of compaction of the slope N is evaluated based on the moving average value of the leaf spring 23 corrected for 0.05 seconds by the correcting means 31. Then, when the moving average value of the leaf spring 23 corrected for 0.05 seconds by the correction means 31 reaches a predetermined value, the determination means 26 determines that the compaction of the slope N by the diaphragm 22 is completed. The For this reason, noise due to the impact of the diaphragm 22 that becomes a disturbance when the first strain gauge 25 is measured is efficiently removed, and a measured value of the degree of elastic deformation of the leaf spring 23 is obtained as an accurate value. The completion determination of the compaction of the surface N can be accurately performed. As a result, even an inexperienced worker can uniformly compact the entire area of the slope N, and can prevent the slope N from being excessively compacted. It is surely prevented. Therefore, the entire area of the slope N can be more uniformly compacted, and the working time can be shortened by eliminating the unevenness of the slope N.

  Further, the expansion / contraction operation of the oscillating cylinder 18 is controlled by the determination means 26 based on the measured value of the second strain gauge 27 that detects the axial force from the arm 17 that acts at the time of striking due to the vibration of the diaphragm 22, and the diaphragm Since the axial force from the arm 17 is adjusted so that the measured value of the second strain gauge 27 becomes an appropriate value at the time of impact by the vibration of the 22, the optimum loading force is adjusted based on the measured value of the second strain gauge 27. 17, the slope N can be efficiently compacted.

  When the determination means 26 determines that the slope N has been compacted, the diaphragm 22 is moved from each region to the uncompacted region based on the signal received by the GPS receiver. Since the diaphragm 22 is compacted, each region of the slope N can be compacted smoothly without any leakage.

  Further, a mounting portion 210 is provided at the tip of the vibration applying shaft 21 and is inserted in a state in which each bolt hole 215 of each protruding piece 211 and each bolt hole of each vertical rib 222 of the diaphragm 22 are aligned. Since the vibration plate 22 is detachably attached to the tip of the vibration applying shaft 21 by screwing the bolt 212 and the nut 213, the vibration plate 22 is attached to and detached from the arm 17 of the backhoe 1, that is, the tip of the vibration applying shaft 21. Can be performed smoothly.

  Further, by applying a leaf spring 23 having a base end cantilevered to the diaphragm 22 and having a penetrating body 24 provided on the distal end side as an elastic member, the leaf spring 23 supporting the base end in a cantilever manner is applied to the distal end side. The elastic member can be configured with a simple structure in which only the penetrating body 24 is provided.

  Next, a second embodiment of the present invention will be described with reference to FIGS.

  In this embodiment, a coil spring is applied as an elastic member instead of the leaf spring. 10 is a plan view seen from above with the diaphragm 22 of the slope compaction device according to the second embodiment of the present invention attached to the vibration applying shaft 21, and FIG. 11 is a partially cutaway view of the diaphragm. Each side view is shown. The rest of the configuration excluding the coil spring is the same as that of the first embodiment, and the same parts are denoted by the same reference numerals and detailed description thereof is omitted.

  That is, as shown in FIGS. 10 and 11, a substantially disc-shaped mounting plate 42 in which the penetrating body 24 is mounted at the center position of the lower surface is placed on the inner surface (upper surface in FIG. 10) of the diaphragm 22. ing. The mounting plate 42 includes a column bolt 41 projecting upward from the center position on the upper surface thereof. In addition, at the corresponding position of the diaphragm 22 corresponding to the peripheral edge side of the upper surface of the mounting plate 42, eight bolt members from the upper surface of the main body plate 220 at predetermined circumferential intervals on the peripheral edge side of the upper surface of the mounting plate 42. 421 is erected. Further, through holes (not shown) through which the respective bolt members 421 are inserted are provided on the peripheral edge side of the mounting plate 42, and the respective bolt members 421 are extended upward through the respective through holes. Eight coil springs 43 as elastic members are inserted into the bolt members 421, respectively.

  Above the mounting plate 42, a disk 44 having substantially the same shape as this is opposed, and bolt insertion holes (not shown) opened on the peripheral edge side of this disk 44 are also arranged at predetermined intervals in the circumferential direction. It is made in. Further, an insertion hole (not shown) through which the support bolt 41 is inserted is provided at the center position of the disc 44. Then, the disc 44 inserts the bolt members 421 and the column bolts 41 from above the coil springs 43 through the insertion holes, respectively, and the nut members 411 and 422 as the tips (upper ends of the bolt members 421 and the column bolts 41). ), The respective coil springs 43 are contracted between the diaphragm 22 and the penetrating body 24.

  Further, as the measuring means, an acceleration sensor 45 is used, and the acceleration sensor 45 is attached to the upper surface of the attachment plate 42. The acceleration sensor 45 measures the acceleration of the mounting plate 42 that moves up and down with the forward and backward movement when the penetrating body 24 moves forward and backward against the urging force of each coil spring 43 by striking the diaphragm 22. Yes. Then, the acceleration data measured by the acceleration sensor 45 is second-order integrated with time to calculate the vertical displacement amount of the mounting plate 42 (penetrating body 24). The forward / backward movement amount from which the disturbance of the mounting plate 42 is removed when the plate 22 is hit, that is, the lifting amount of the mounting plate 42 based on the elastic deformation degree (lifting amount) of each coil spring 43 is calculated. The lifting amount of the mounting plate 42 (penetrating body 24) may be measured by a contact type or non-contact type displacement meter.

  Therefore, also in the present embodiment, the amount of lifting of the mounting plate 42 due to the degree of elastic deformation of each coil spring 43 that is elastically deformed by the reaction force from the slope N acting via the penetrating body 24 every time the diaphragm 22 is struck. Is obtained on the basis of the vertical displacement amount of the mounting plate 42 calculated by integrating the acceleration data measured by the acceleration sensor 45 with respect to time, thereby increasing the hardness of the slope N by striking the diaphragm 22. Corresponding compaction will be evaluated. Specifically, the degree of compaction of the slope N is evaluated based on the moving average value of the mounting plate 42 corrected for 0.05 seconds by the correcting means 31. Then, when the moving average value of the mounting plate 42 corrected for 0.05 seconds by the correcting unit 31 reaches a predetermined value, the determining unit 26 determines that the compaction of the slope N by the diaphragm 22 is completed. The For this reason, noise due to the impact of the diaphragm 22 that becomes a disturbance at the time of measurement by the acceleration sensor 45 is efficiently removed, and the measured value of the lifting amount of the mounting plate 42 is obtained as an accurate value. Completion determination of compaction can be accurately performed.

  In addition, by applying each coil spring 43 that is contracted between the diaphragm 22 and the penetrating body 24 as an elastic member, the coil spring 43 is simply contracted between the diaphragm 22 and the penetrating body 24. The elastic member can be configured with a simple structure, and the elastic force of the coil spring 43 can be easily adjusted simply by loosely tightening the nut members 411 and 422 screwed to the ends of the bolt members 421 and the column bolts 41. You can also

  The present invention is not limited to the above-described embodiments, and includes other various modifications. For example, in the first embodiment, the penetrating body 24 is attached to the tip of one leaf spring 23 attached to the inner surface of the diaphragm 22, but a plurality of plates are provided according to the hardness of the slope ground. You may use a spring in piles.

  In each of the above embodiments, an unconsolidated area is displayed on the display device 131 from among the areas based on the signal received by the GPS receiver, and the operator sequentially places the diaphragm 22 into the unconsolidated area. Although it is moved and compacted by the diaphragm 22, the rotation angle of the upper swing body, the tilt angle of the boom, the swing angle of the arm, the swing angle of the fixture, and the like are detected from the detection sensor. Based on the signal, control means is provided to control the movement of the upper swing body, boom, arm and fixture, and automatically vibrates from each area to the unconsolidated area based on the signal received by the GPS receiver. The plate may be moved.

  Further, in each of the above-described embodiments, the case where the slope compaction device 2 is used for the backhoe 1 has been described. However, the present invention is not limited to this, and the backhoe 1 may be used for a construction excavating machine such as a power shovel or a tractor. .

1 Backhoe (excavation machine)
2 Slope compaction device 20 Vibration generating device 21 Vibration applying shaft (arm)
210 Mounting part 22 Diaphragm 225 Opening hole 23 Leaf spring (elastic member)
24 Penetration body 25 1st strain gauge (measuring means)
26 determination means 27 second strain gauge (axial force detection means)
31 Correction means 43 Coil spring (elastic member)
45 Acceleration sensor (measuring means)
N slope

Claims (8)

In a slope compaction device equipped with a vibration plate that is attached to the tip of the arm of a self-propelled excavating machine and is compacted by striking the slope with vibration from the vibration generator,
Elastically deformable elastic member provided on the diaphragm;
A penetrating member that is biased so as to protrude outwardly through an opening hole that opens to the diaphragm by the elastic force of the elastic member, and that is movable forward and backward through the opening hole; and
Measuring means for continuously measuring in real time the degree of elastic deformation of the elastic member that is elastically deformed by a reaction force from a slope acting via the penetrating body for each impact by vibration of the diaphragm;
A slope compaction device characterized by comprising:   2. The slope compaction apparatus according to claim 1, further comprising a judgment means for inputting a measurement value from the measurement means and determining that the slope compaction is completed when the measurement value reaches a predetermined value. .   The said determination means is provided with the correction means which correct | amends the elastic deformation degree of the said elastic member based on the advancing / retreating movement average value at the time of the said penetration body moving forward / backward by the impact by the vibration of the said diaphragm. The slope compaction device according to 2.   Axial force detecting means for detecting an axial force from the arm acting at the time of striking due to vibration of the diaphragm is provided, and the axial force from the arm is adjusted so that the detected value of the axial force detecting means becomes an appropriate value. The slope compaction device according to claim 2 or claim 3, wherein A GPS receiver for a global positioning system that measures the position of each area of the slope divided into a plurality of areas according to the size of the diaphragm based on radio waves from a satellite;
Based on the signal received by the GPS receiver when the determination unit determines that the slope compaction has been completed, the diaphragm has not yet been compacted from the respective areas. The slope compaction device according to any one of claims 2 to 4, wherein the diaphragm is sequentially moved to an unconsolidated region so as to perform compaction by the diaphragm.   The slope compaction device according to any one of claims 2 to 5, wherein a mounting portion for detachably mounting the diaphragm is provided at a tip of an arm of the excavating machine.   The leaf spring in which the base end is cantilever-supported on the diaphragm and the penetrating body is provided on the distal end side is applied as the elastic member. Slope compaction device.   The slope compaction device according to any one of claims 2 to 6, wherein a coil spring that is compressed between the diaphragm and the penetrating body is applied as the elastic member.

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