Full-automatic drop hammer type rapid tester for compaction degree of solidified soil base layer

Abstract

The utility model relates to the field of road construction equipment, in particular to a full-automatic drop hammer type solidified soil base layer compaction degree rapid tester which comprises a detection assembly, a lifting assembly, a controller and a vehicle body, the detection assembly vertically penetrates through the vehicle body, and the lifting assembly is arranged between the top of the vehicle body and a supporting frame. The full-automatic drop hammer type rapid tester for the compaction degree of the solidified soil base layer has the beneficial effects that the full-automatic drop hammer type rapid tester for the compaction degree of the solidified soil base layer is designed on the basis of a drop hammer rebound principle aiming at the problem that a rapid nondestructive detection assembly for the compaction degree of the solidified soil base layer is lacked; according to the device, the compaction degree of the solidified soil base layer can be quickly subjected to full-automatic nondestructive testing, the drop hammer is reset and released by matching the annular electromagnet with the lead screw mechanism, the steps of manual reset and release of the drop hammer are avoided, the automation of the compaction degree detection process is realized, and the compaction degree detection efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of road construction equipment, in particular to a full-automatic falling hammer type rapid measuring instrument for the compactness of solidified soil base course. Background Technique

[0002] During the highway construction process, using solidified soil as the subgrade filling material is a new type of pavement base course construction technology, and the compactness of the solidified soil base course is a key index determining its base course performance. At present, the detection methods for the compactness of the base course mainly include two categories: destructive detection and non-destructive detection. Among them, the destructive detection is mainly the sand replacement method. Core samples are taken from the pavement to be detected and measured for their wet density and dry density in the laboratory, and finally the actual compactness of the subgrade and pavement filling materials is calculated. Although the result of this method is accurate, the operation process is relatively cumbersome and the detection speed is slow. The non-destructive detection mainly includes methods such as the nuclear density meter method and the airborne compactness detection. The compactness is indirectly reflected through ray feedback or changes in the parameters of the airborne sensor. Although the detection speed is relatively fast, the price is expensive and the detection result is not accurate enough.

[0003] After retrieval, in the "Falling Hammer Type Rapid Measuring Device and Measuring Method for the Compactness of Cement Stabilized Base Course" with the publication number of CN105203420A, a non-destructive detection method based on the falling hammer rebound principle is proposed. The compactness of the base course is reflected by measuring the rebound height of a falling hammer with calibrated gravitational potential energy when it freely falls to the surface of the cement stabilized base course. Although this principle is also applicable to the compactness detection of the solidified soil base course, although this method realizes non-destructive detection, has a simple structure and reasonable design, it still requires manual release and reset of the falling hammer, and manual displacement of the detection device, which affects the efficiency of the compactness detection.

[0004] Therefore, it is necessary to invent a full-automatic falling hammer type rapid measuring instrument for the compactness of solidified soil base course. Content of the Utility Model

[0005] For this reason, the utility model provides a full-automatic falling hammer type rapid measuring instrument for the compactness of solidified soil base course to solve the problems raised in the above background technique.

[0006] In order to achieve the above purpose, the utility model provides the following technical solution: A full-automatic falling hammer type rapid measuring instrument for the compactness of solidified soil base course, including a detection component, a lifting component, a controller and a vehicle body. The detection component vertically penetrates the vehicle body. The lifting component is arranged between the top of the vehicle body and a support frame. Both the detection component and the lifting component are electrically connected to the controller;

[0007] The detection component includes a support frame, a guide plate, a reset component and a drop hammer. The support frame includes a bottom plate located at the bottom of the vehicle body. Four slide rails are vertically fixed to the top of the vehicle body. A vertical column is slidably connected inside each of the slide rails. The tops of the four columns are horizontally fixed with a top plate. A first through hole is opened at the center of the bottom plate. A laser rangefinder is vertically fixed at the center of the bottom of the top plate. There are two guide plates, and the two guide plates are symmetrically fixed between the top plate and the bottom plate. The guide plates are arc-shaped. The two vertically arranged guide plates form a guide pipe with openings on both sides. The drop hammer is located inside the guide pipe formed by the two guide plates. A mounting plate is horizontally fixed between the four columns. The mounting plate is located below the top plate. A second through hole is opened at the center of the mounting plate. The reset component is arranged between the mounting plate and the bottom plate. An annular electromagnet is fixed on the reset component. The laser rangefinder, the second through hole, the annular electromagnet, the drop hammer and the first through hole are vertically corresponding to each other in sequence;

[0008] The reset component includes a reset motor vertically fixed on one side of the top of the mounting plate. The output shaft of the reset motor vertically passes through the mounting plate, and a lead screw is vertically fixed on the output shaft of the reset motor. A reset base is threadedly connected to the surface of the lead screw. The annular electromagnet is fixed in the middle of the reset base;

[0009] The lifting component includes a lifting plate and a base. The lifting plates are symmetrically fixed on two columns on the same side of the support frame. The bases are symmetrically fixed on both sides of the top of the vehicle body. The lifting plates and the bases correspond to each other vertically. Base slide rails are fixed on the tops of the bases. Lifting plate slide rails are fixed on the bottoms of the lifting plates. Sliding rods are hinged to the ends of the lifting plates and the ends of the bases respectively. The sliding rods are cross-arranged and hinged to each other in the middle. The other ends of the sliding rods are respectively hinged with sliding shafts, and the sliding shafts slide on the lifting plate slide rails and the base slide rails respectively;

[0010] The lifting component further includes a driving motor. The driving motor is fixed to the top of the vehicle body at the bottom. A worm is fixed on the output shaft of the driving motor. A transmission shaft is rotatably connected to the top of the vehicle body. A worm gear meshing with the worm is fixed on the surface of the transmission shaft. Transmission bevel gears are symmetrically fixed at both ends of the transmission shaft. Horizontally lead screws are symmetrically rotatably connected to both sides of the top of the vehicle body. Driven bevel gears meshing with the transmission bevel gears are fixed at the ends of the horizontally lead screws. The ends of the sliding shafts sliding on the base slide rails are threadedly connected to the surfaces of the horizontally lead screws.

[0011] Preferably, a reset block is fixed to the top of the drop hammer. The top of the reset block is magnetically attracted to the bottom of the annular electromagnet. A hemispherical elastic hammer head is fixed to the bottom of the drop hammer. The diameter of the drop hammer is smaller than the diameter of the guide pipe formed by the two guide plates, and the diameter of the drop hammer is larger than the diameter of the first through hole.

[0012] Preferably, a guide rod is vertically fixed to the bottom of the mounting plate. The bottom end of the guide rod is fixed to the top of the bottom plate, and the guide rod vertically passes through one end of the reset base away from the lead screw.

[0013] Preferably, the controller is fixed to the front side of the top of the vehicle body, and the laser rangefinder, the annular electromagnet, the drive motor, and the reset motor are all electrically connected to the controller.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. Aiming at the problem of the lack of a rapid non-destructive detection component for the compaction degree of the solidified soil base layer, based on the principle of the rebound of the falling hammer, the present utility model designs a fully automatic falling hammer type rapid determination instrument for the compaction degree of the solidified soil base layer, which can quickly perform fully automatic non-destructive detection on the compaction degree of the solidified soil base layer;

[0016] 2. The present utility model uses an annular electromagnet in combination with a lead screw mechanism to reset and release the falling hammer, avoiding the steps of manually resetting and releasing the falling hammer, realizing the automation of the compaction degree detection process, and improving the compaction degree detection efficiency;

[0017] 3. The lifting component designed by the present utility model can control the height of the detection component, lower the detection component during operation to ensure the accuracy of the detection result, and lift the detection component when the measuring instrument is transferred to facilitate the equipment to travel to the next test point, realizing the automation of the recovery and placement process of the detection component. Description of the Drawings

[0018] Figure 1 is the overall structural schematic diagram of the present utility model;

[0019] Figure 2 is the structural schematic diagram of the detection component of the present utility model;

[0020] Figure 3 is the structural schematic diagram of the lifting component of the present utility model;

[0021] Figure 4 is the bottom view of the vehicle body structure of the present utility model;

[0022] Figure 5 is the structural schematic diagram of the falling hammer of the present utility model;

[0023] Wherein: 1 - detection component, 2 - lifting component, 3 - controller, 4 - vehicle body, 11 - support frame, 12 - reset component, 13 - drop hammer, 101 - column, 102 - bottom plate, 103 - top plate, 104 - handle, 105 - mounting plate, 106 - laser rangefinder, 107 - reset motor, 108 - reset base, 109 - lead screw, 110 - guide rod, 111 - annular electromagnet, 112 - guide plate, 201 - base, 202 - base slide rail, 203 - sliding rod, 204 - sliding shaft, 205 - lifting plate, 206 - drive motor, 207 - worm, 208 - transmission shaft, 209 - transmission bevel gear, 210 - horizontal lead screw, 211 - lifting plate slide rail, 402 - slide rail. Detailed implementation manner

[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustrating and explaining the present invention, and are not used to limit the present invention.

[0025] Please refer to the attached Figures 1-5 , A fully automatic drop hammer type quick determination instrument for the compaction degree of solidified soil base provided by the present invention includes a detection component 1, a lifting component 2, a controller 3 and a vehicle body 4. The detection component 1 vertically passes through the vehicle body 4, the controller 3 is fixed on the front side of the top of the vehicle body 4, the lifting component 2 is arranged between the top of the vehicle body 4 and the support frame 11, and both the detection component 1 and the lifting component 2 are electrically connected to the controller 3;

[0026] The detection component 1 includes a support frame 11, a guide plate 112, a reset component 12 and a drop hammer 13. The support frame 11 includes a bottom plate 102, and the bottom plate 102 is located at the bottom of the vehicle body 4 (such as Figure 4As shown in the figure, four slide rails 402 are vertically fixed to the top of the vehicle body 4. Inside each slide rail 402, a vertical column 101 is slidably connected, enabling the entire detection assembly 1 to slide up and down along the slide rails 402. At the top of the four vertical columns 101, a top plate 103 is horizontally fixed. A handle 104 is fixed to the top of the top plate 103, which can be grasped with one hand by a single person, facilitating the placement and retrieval of the measuring instrument. A first through hole is opened at the center of the bottom plate 102. At the center of the bottom of the top plate 103, a laser rangefinder 106 is vertically fixed. The laser rangefinder 106 is electrically connected to the controller 3. The laser rangefinder and the controller are well-known technologies to those skilled in the art and will not be elaborated further. The number of guide plates 112 is two, and the two guide plates 112 are symmetrically fixed between the top plate 103 and the bottom plate 102. The guide plates 112 are arc-shaped. The two vertically arranged guide plates 112 form a guide pipe with openings on both sides. The drop hammer 13 is located inside the guide pipe formed by the two guide plates 112. A mounting plate 105 is horizontally fixed between the four vertical columns 101. The mounting plate 105 is located below the top plate 103. A second through hole is opened at the center of the mounting plate 105. The reset assembly 12 is arranged between the mounting plate 105 and the bottom plate 102. An annular electromagnet 111 is fixed to the reset assembly. The annular electromagnet 111 is electrically connected to the controller 3. The laser rangefinder 106, the second through hole, the annular electromagnet 111, the drop hammer 13, and the first through hole are vertically aligned in sequence. A reset block 131 is fixed to the top of the drop hammer 13. The top of the reset block 131 is magnetically attracted to the bottom of the annular electromagnet 111. A hemispherical elastic hammer head 132 is fixed to the bottom of the drop hammer 13 (as Figure 5 shown). The diameter of the drop hammer 13 is smaller than the diameter of the guide pipe formed by the two guide plates 112, and the diameter of the drop hammer 13 is larger than the diameter of the first through hole. That is, the drop hammer 13 can fall inside the guide pipe formed by the two guide plates 112. The ranging laser can pass through the second through hole on the mounting plate 105 and the annular electromagnet 111 and vertically enter the upper end face of the reset block 131 at the top of the drop hammer 13 to measure the distance between it and the upper end face of the reset block 131;

[0027] such as Figure 2As shown, the reset assembly 12 includes a reset motor 107, which is preferably set as a servo motor. The reset motor 107 is vertically fixed on one side of the top of the mounting plate 105. The reset motor 107 is electrically connected to the controller 3. The output shaft of the reset motor 107 vertically passes through the mounting plate 105, and a lead screw 109 is vertically fixed on the output shaft of the reset motor 107. A reset base 108 is threadedly connected to the surface of the lead screw 109. An annular electromagnet 111 is fixed in the middle of the reset base 108. A guide rod 110 is also vertically fixed at the bottom of the mounting plate 105. The bottom end of the guide rod 110 is fixed on the top of the bottom plate 102. The guide rod 110 vertically passes through one end of the reset base 108 away from the lead screw 109. That is, under the guiding action of the guide rod 110, when the reset motor 107 operates to drive the lead screw 109 to rotate forward and backward, the reset base 108 can move up and down, thereby driving the annular electromagnet 111 to move up and down. That is, when the reset motor 107 rotates, it can control the lifting of the annular electromagnet 111, so as to automatically reset and release the drop hammer 13, avoiding the steps of manual reset and release of the drop hammer, realizing the automation of the compaction degree detection process, and improving the compaction degree detection efficiency;

[0028] As Figure 3 As shown, the lifting assembly 2 includes a lifting plate 205 and a base 201. The lifting plate 205 is symmetrically fixed on two columns 101 on the same side of the support frame 11. The base 201 is symmetrically fixed on both sides of the top of the vehicle body 4. The lifting plate 205 and the base 201 are correspondingly arranged up and down one by one. Base rails 202 are fixed on the top of the base 201. Lifting plate rails 211 are fixed on the bottom of the lifting plate 205. Sliding rods 203 are hinged at the ends of the lifting plate 205 and the ends of the base 201. The sliding rods 203 are cross - arranged and hinged at the middle. The other ends of the sliding rods 203 are respectively hinged with sliding shafts 204, and the sliding shafts 204 slide on the lifting plate rails 211 and the base rails 202 respectively;

[0029] As Figure 3As shown in the figure, the lifting assembly further includes a driving motor 206. The bottom of the driving motor 206 is fixed to the top of the vehicle body 4. The driving motor 206 is electrically connected to the controller 3. A worm 207 is fixed to the output shaft of the driving motor 206. A transmission shaft 208 is rotatably connected to the top of the vehicle body 4. A worm gear meshing with the worm 207 is fixed to the surface of the transmission shaft 208. Transmission bevel gears 209 are symmetrically fixed to both ends of the transmission shaft 208. Horizontal lead screws 210 are symmetrically and rotatably connected to both sides of the top of the vehicle body 4. Driven bevel gears meshing with the transmission bevel gears 209 are fixed to the ends of the horizontal lead screws 210. The end of the sliding shaft 204 sliding on the base slide rail 202 is threadedly connected to the surface of the horizontal lead screw 210. That is, when the driving motor 206 operates, it can drive the transmission shaft 208 to rotate forward and backward through the worm and worm gear transmission, thereby driving the two side horizontal lead screws 210 to rotate through the transmission bevel gear transmission 209. The screw threads of the two side horizontal lead screws 210 have opposite directions. When the horizontal lead screws 210 rotate, they can drive the lifting plate 205 to rise or fall, thereby driving the entire detection assembly 1 to rise or fall, that is, the height of the detection assembly 1 can be controlled. When working, the detection assembly 1 is lowered to ensure the accuracy of the detection result. When the measuring instrument is transferred, the detection assembly 1 is lifted to facilitate the equipment to travel to the next test point, realizing the automation of the recovery and placement process of the detection assembly 1.

[0030] The usage process of the present utility model is as follows:

[0031] Step 1: Place the measuring instrument at the first point to be detected.

[0032] Step 2: Turn on the laser rangefinder 106 through the controller 3 to measure the distance between it and the upper end face of the reset block 131 at the top of the drop hammer 13 in real time, and the detection process starts.

[0033] Step 3: The driving motor 206 of the lifting assembly 2 operates to control the overall lowering of the detection assembly 1 until the bottom plate 102 is in full contact with the ground to be measured.

[0034] Step 4: The annular electromagnet 111 is energized, and the reset motor 107 operates to control the annular electromagnet 111 to descend and adsorb the drop hammer 13, and then drive the drop hammer 13 to rise to a fixed height.

[0035] Step 5: The annular electromagnet 111 is de-energized, the drop hammer 13 is detached, and it freely falls to the ground to be measured along the guide plate 112 and rebounds to a certain height. Record the maximum height that the drop hammer 13 rebounds during this process.

[0036] Step 6: Repeat Steps 4 and 5 three times, and take the average value of the maximum heights of the three measurements of the drop hammer 13's rebound as the characterization value of the compaction degree of the solidified soil base layer. This characterization value can reflect the compaction degree of the solidified soil base layer through a certain mapping relationship.

[0037] Step 7: After the three measurements are completed, the drive motor 206 of the lifting assembly 2 operates to control the overall lifting of the detection assembly 1 until the bottom plate 102 is completely separated from the ground to be measured. Then, move the mobile vehicle body 4 to the next detection point, and repeat Steps 3 to 6 to detect the compaction degree of the next point.

[0038] The above are only the preferred embodiments of the present invention. Any person skilled in the art can modify the present invention by using the technical solutions described above or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solutions of the present invention falls within the scope of protection required by the present invention.

Claims

1. A fully automatic drop-hammer type solidified soil base compaction rapid determination instrument, comprising a detection component (1), a lifting component (2), a controller (3) and a vehicle body (4), characterized in that: The detection component (1) vertically passes through the vehicle body (4), the lifting component (2) is arranged between the top of the vehicle body (4) and the support frame (11), and the detection component (1) and the lifting component (2) are both electrically connected to a controller (3); The detection component (1) comprises a support frame (11), a guide plate (112), a reset component (12) and a drop weight (13); the support frame (11) comprises a bottom plate (102); the bottom plate (102) is located at the bottom of the vehicle body (4); four slide rails (402) are vertically fixed on the top of the vehicle body (4); the insides of the slide rails (402) are vertically slidably connected with columns (101); a top plate (103) is horizontally fixed on the tops of the four columns (101); a first through hole is opened at the center of the bottom plate (102); a laser rangefinder (106) is vertically fixed at the center of the bottom of the top plate (103); the number of the guide plates (112) is two, and the two guide plates (112) are symmetrically fixed on the top plate (103) and the bottom plate ( The guide plate (112) is in an arc shape, the two vertically arranged guide plates (112) form a guide pipe with openings on both sides, the drop hammer (13) is located inside the guide pipe formed by the two guide plates (112), a mounting plate (105) is horizontally fixed between the four uprights (101), the mounting plate (105) is located below the top plate (103), a second through hole is opened at the center of the mounting plate (105), the reset component (12) is arranged between the mounting plate (105) and the bottom plate (102), an annular electromagnet (111) is fixed on the reset component, and the laser rangefinder (106), the second through hole, the annular electromagnet (111), the drop hammer (13) and the first through hole correspond to each other in sequence; The reset assembly (12) comprises a reset motor (107), the reset motor (107) is vertically fixed to one side of the top of the mounting plate (105), the output shaft of the reset motor (107) vertically passes through the mounting plate (105), and a lead screw (109) is vertically fixed to the output shaft of the reset motor (107), the surface of the lead screw (109) is threadedly connected to a reset base (108), and the annular electromagnet (111) is fixed to the middle of the reset base (108); The lifting assembly (2) comprises a lifting plate (205) and a base (201), wherein the lifting plate (205) is symmetrically fixed on two upright posts (101) on the same side of the support frame (11), and the base (201) is symmetrically fixed on both sides of the top of the vehicle body (4). The lifting plate (205) and the base (201) correspond to each other one by one, and the top of the base (201) is fixed with a base slide rail (202), and the bottom of the lifting plate (205) is fixed with a lifting plate slide rail (211), and the end of the lifting plate (205) and the end of the base (201) are hinged with sliding rods (203), and the sliding rods (203) are cross-arranged and hinged in the middle, and the other end of the sliding rods (203) is hinged with a sliding shaft (204), and the sliding shaft (204) slides on the lifting plate slide rail (211) and the base slide rail (202) respectively; The lifting assembly further comprises a driving motor (206), the bottom of the driving motor (206) being fixed to the top of the vehicle body (4), the output shaft of the driving motor (206) being fixed with a worm (207), the top of the vehicle body (4) being rotatably connected with a transmission shaft (208), the surface of the transmission shaft (208) being fixed with a worm wheel meshing with the worm (207), transmission bevel gears (209) being symmetrically fixed at both ends of the transmission shaft (208), horizontal lead screws (210) being symmetrically rotatably connected at both sides of the top of the vehicle body (4), the ends of the horizontal lead screws (210) being fixed with driven bevel gears meshing with the transmission bevel gears (209), and the ends of the sliding shaft (204) sliding on the base slide rail (202) being threadedly connected to the surface of the horizontal lead screw (210).

2. The fully automatic drop-hammer type solidified soil base compaction rapid tester according to claim 1, characterized in that: A reset block (131) is fixed on the top of the drop hammer (13), the top of the reset block (131) is magnetically attracted to the bottom of the annular electromagnet (111), a hemispherical elastic hammer head (132) is fixed on the bottom of the drop hammer (13), the diameter of the drop hammer (13) is smaller than the diameter of the guide pipe formed by the two guide plates (112), and the diameter of the drop hammer (13) is larger than the diameter of the first through hole.

3. A fully automatic drop-hammer type solidified soil base compaction rapid tester according to claim 2, characterized in that: A guide rod (110) is also vertically fixed to the bottom of the mounting plate (105), the bottom end of the guide rod (110) is fixed to the top of the bottom plate (102), and the guide rod (110) vertically passes through one end of the reset base (108) away from the screw rod (109).

4. The fully automatic drop-hammer type solidified soil base compaction rapid tester according to claim 1, characterized in that: The controller (3) is fixed on the top front side of the vehicle body (4), and the laser rangefinder (106), the annular electromagnet (111), the drive motor (206), and the reset motor (107) are all electrically connected to the controller (3).

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