A construction material magnetic detection device and monitoring method

Abstract

The present invention relates to the field of magnetic detection technology for construction materials, and specifically to a magnetic detection device and monitoring method for construction materials, comprising a support platform, a support frame, a first containing box, and two second containing boxes. One side of the first containing box is fixedly connected to the first column for containing bagged materials. The arc-shaped opening at the top of the first containing box is arranged below the arc-shaped pressure plate. The bottom of the second containing box is rotatably connected to the support platform for containing bagged materials dropped from the first containing box. In the present invention, multiple bags of cement placed in the first containing box are bent and surrounded on the outside of the central axis of the first containing box by the arc-shaped pressure plate. By moving the detection probe on the fluxgate magnetometer on the axis of the center of the first containing box, the detection probe can detect the magnetism of multiple bags of cement at the same time. By using the second containing box, the replacement side of multiple bags of cement is surrounded by the detection probe, so that the different side of multiple bags of cement can be magnetically detected, thereby improving the accuracy of the magnetic detection result.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic detection of construction materials, in particular to a magnetic detection device and a monitoring method for construction materials. Background Art

[0002] In some application scenarios that are sensitive to magnetic fields (such as the manufacture and installation of precision instruments and electronic equipment), the presence of magnetic materials may cause interference. Therefore, when constructing buildings in such scenarios, it is necessary to use construction materials that meet the requirements of weak magnetic construction. Common construction materials include yellow sand, cement, etc.

[0003] At present, the magnetic detection device used to detect construction materials mainly consists of a cylindrical shielding chamber and a fluxgate magnetometer. During the detection, the construction materials are placed inside the shielding chamber, and then the monitoring probe of the fluxgate magnetometer is moved around the periphery of the construction materials to detect the magnetic reading of the construction materials.

[0004] The space in the shielding bin is limited, and generally only small-volume construction sample materials are subjected to magnetic testing. Bags of cement or sand are large in size, which is not conducive to using the shielding bin to hold a large amount of materials for magnetic testing. In addition, the side of the construction material that contacts the support platform inside the shielding bin is not convenient for contact with the detection probe, resulting in the traditional magnetic detection value reflecting the value of a certain side of the material, and no overall magnetic detection is performed on different sides of the material, which affects the accuracy of the magnetic detection results to a certain extent. Summary of the invention

[0005] The object of the present invention is to provide a construction material magnetic detection device and monitoring method to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A construction material magnetic detection device and monitoring method, comprising:

[0008] Support table;

[0009] A support frame is fixed on one side of the top surface of the support platform, the support frame includes a column 1, a column 2 is rotatably mounted on the top of the column 1, two cylinders are fixed on the top of the column 2, and two arc-shaped pressure plates are fixed on the output end of the cylinder;

[0010] A first containing box, one side of which is fixedly connected to the first column, for containing bagged materials, and the arc-shaped opening at the top of the first containing box is arranged below the arc-shaped pressing plate;

[0011] Two symmetrically arranged second containing boxes, the bottoms of which are rotatably connected to the support platform, for containing the bagged materials falling from the containing boxes;

[0012] The detection module is arranged on one side of the support frame and is used to detect the magnetism around the bagged materials inside the first and second containing boxes. The detection module includes two T-shaped frames, a guide rail is fixed between the two T-shaped frames, an electric push rod is slidably connected to the top of the guide rail, and a detection probe is rotatably provided at the output end of the electric push rod, and the detection probe is electrically connected to a fluxgate magnetometer through a cable.

[0013] Furthermore, both ends of the top surface of the support platform are slidably connected with a moving seat, and the top of the moving seat is rotatably provided with a supporting shaft fixedly connected to the corresponding position of the second containing box.

[0014] Furthermore, a crossbeam fixedly connected to the cylinder is fixed on the top of the second column, and a connecting plate fixedly connected to the arc-shaped pressing plate is fixed on the output end of the cylinder.

[0015] Furthermore, the outer side of the column 1 is rotatably connected with a transmission rod, two toggle rods are fixed on the top of the transmission rod, and a motor 1 for driving the transmission rod to rotate is fixed on the outer side of the column 1.

[0016] Further, the first storage box is semicircular, and the first storage box includes:

[0017] An arc-shaped partition plate 1, which is embedded and fixed in the middle position of the inner side of the containing box 1 and is used to separate two adjacent bags of construction materials;

[0018] Two arc-shaped through holes 1 are symmetrically arranged on the inner bottom surface of the containing box 1, and the arc-shaped through holes 1 are slidably connected to the toggle rod.

[0019] Further, the second storage box comprises:

[0020] A baffle, the baffle being movably plugged with the bottom end of the second containing box, and a limiting block being fixed on the top of the baffle;

[0021] Two arc-shaped through holes 2, the two arc-shaped through holes 2 are symmetrically arranged on the top surface of the second containing box, and the arc-shaped through holes 2 are slidably connected to the toggle rod;

[0022] A second arc-shaped partition is embedded and fixed in the middle position of the second containing box and is used to separate two adjacent bags of construction materials.

[0023] Further, the top of the guide rail is slidably connected with a slider plugged and fixed with the electric push rod, and the guide rail includes:

[0024] A screw rod, both ends of which are rotatably connected to the guide rail, and the screw rod is screwed and connected to the slider;

[0025] Motor 2 is fixed on the outside of the T-shaped frame, and the output end of the motor 2 is fixedly connected to one end of the screw rod.

[0026] Furthermore, two clamping plates are detachably fixed on the outer side of the detection probe, a rotating seat is fixed on the bottom of one of the clamping plates, and a fixed seat rotatably connected to the rotating seat is fixed on the output end of the electric push rod.

[0027] Furthermore, an arc-shaped through hole three is formed through the outer side of the fixing seat, a limiting bolt penetrating the arc-shaped through hole three is fixed to the outer side of the rotating seat, and a nut is screwed and connected to the end of the limiting bolt.

[0028] The present invention also provides a monitoring method for a construction material magnetic detection device, the method specifically comprising the following steps:

[0029] Step 1: Arrange two support platforms in an open area and place the detection module in front of the two support platforms;

[0030] Step 2: placing multiple bags of cement inside the first container, and using the cylinder with the arc-shaped pressing plate to bend the multiple bags of cement around the outside of the central axis of the first container;

[0031] Step 4: Adjust the detection direction of the detection probe on the fixed base so that the device position is in the same direction and angle as the geomagnetic field;

[0032] Step 5: Detect the environmental geomagnetic field data at the location of the material to be tested and record the value;

[0033] Step 6: Move the detection probe to the central axis of the container to detect the magnetic values ​​around the multiple bags of cement;

[0034] Step 7: Transfer the bagged cement in the first container to the second container, rotate and move the two second containers closer to each other, so that the replacement surface of the multiple bags of cement surrounds the outside of the central axis of the first container;

[0035] Step 7: The detection probe detects the magnetic values ​​around the multiple bags of cement again, and generates a report after comparing and converting them with the environmental geomagnetic field data.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. Put the bagged cement (or bagged sand) from the open position of the container into the container. The cylinder output end moves with the arc-shaped pressing plate toward the center of the semicircular container, so that the bagged cement is bent and flattened between the inner bottom surface of the container and the arc-shaped pressing plate (refer to the instruction manual). Figure 3), motor 1 drives the transmission rod and the toggle rod to rotate toward the bottom end of the storage box 1 in succession, and pushes the bagged cement bent into an arc to the bottom position at both ends of the storage box 1. Similarly, the bagged cement can continue to be bent and placed in the open part of the storage box 1 using the arc pressure plate. The electric push rod moves the detection probe to the middle position inside the storage box 1, and multiple bags of bagged cement are bent into a semicircular enclosure around the detection probe, so that the detection probe can detect the magnetic values ​​of multiple bags of bagged cement at the same time, which is beneficial to improving the efficiency of magnetic detection of bagged cement. By bending and flattening multiple bags of bagged cement into a semicircle in advance, the distance between multiple bags of cement arranged on the same circumference and the detection probe is the same, so that the detection probe can detect the magnetism of bagged cement in multiple positions by moving in one direction.

[0038] 2. The bottoms of both ends of the container box 1 are connected with the second container box, and the size of the second container box is half of the volume of the first container box. The second container box and the first container box can be combined into a circle. Refer to the instructions. Fig.10 By slightly rotating the second container on the support platform, the top edge of the second container is misaligned with the bottom edge of the first container, so as to block the bottom of the first container when the bagged material is placed in the first container;

[0039] By rotating the top opening of the second container to communicate with the bottom opening of the first container, the first motor drives the lever on the transmission rod to push the two rows of bagged cement in the first container toward the second container, so that the bagged cement in the first container is transferred to the second container. Fig.11 After the bagged cement is transferred from the first container to the second container, the bending direction of the bagged cement changes. Then the two containers are rotated 180 degrees and pushed closer to each other (refer to the instruction manual). Fig. 9 ), so that the multiple bags of cement that have been magnetically detected inside the storage box are changed to another side and then magnetically detected by the detection probe again, so that magnetic detection can be performed on different sides of the multiple bags of cement at the same time, which is beneficial to improving the accuracy of the magnetic detection results.

[0040] 3. Arrange two support platforms (referred to as the left support platform and the right support platform) on the front side of the detection module, and place the first and second storage boxes on the support platforms (refer to the instruction manual). Figure 3 ), when the detection probe moves to the center of the circle of the holding box 1 of the left support platform to perform magnetic detection operation, the cylinder on the right support platform can drive the arc pressure plate to place the bagged material into the holding box 1 of the support platform for detection and standby. When the holding box 2 on the left support platform is rotated to receive the bagged material and the bagged material is replaced for side detection, the detection probe can be moved along the guide rail to the center of the circle of the holding box 1 of the right support platform to perform magnetic detection operation, thereby realizing that multiple bags of materials placed on the two support platforms can be magnetically detected in a cycle and continuously, which is beneficial to improving the efficiency of magnetic detection of bagged construction materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0042] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0043] Figure 3 It is a schematic diagram of the structure of two support platforms used in conjunction with the detection module in the present invention;

[0044] Figure 4 It is a schematic diagram of the structure of the support platform and the containing box in the present invention;

[0045] Figure 5 It is a schematic diagram of the support frame structure in the present invention;

[0046] Figure 6 It is a structural schematic diagram of a containing box in the present invention;

[0047] Figure 7 It is a schematic diagram of the structure of the detection module in the present invention;

[0048] Figure 8 The present invention Figure 7 A schematic diagram of the partially enlarged structure at center A;

[0049] Fig. 9 This is a schematic diagram of the structure of two combined containing boxes in the present invention;

[0050] Fig.10 It is a schematic diagram of the structure of the two containing boxes 2 and the containing box 1 being rotated and misaligned in the present invention;

[0051] Fig.11 It is a schematic diagram of the internal structure of the bagged yellow sand body in the first containing box and the second containing box in the present invention.

[0052] In the figure: 100, support table; 110, moving seat; 111, support shaft; 200, support frame; 210, column 1; 211, motor 1; 220, column 2; 221, beam; 230, cylinder; 231, connecting plate; 240, arc-shaped pressure plate; 250, transmission rod; 251, toggle rod; 300, storage box 1; 310, arc-shaped partition 1; 320, arc-shaped through hole 1; 400, storage box 2; 410, baffle ; 420, arc-shaped through hole two; 430, arc-shaped partition two; 500, detection module; 510, T-shaped frame; 511, motor two; 520, guide rail; 521, screw rod; 530, slider; 540, electric push rod; 541, fixed seat; 5411, arc-shaped through hole three; 600, detection probe; 610, splint; 611, rotating seat; 6111, limit bolt; 620, fluxgate magnetometer; 700, bagged yellow sand body. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0054] For example, see Figure 1-11 In an embodiment of the present invention, a magnetic detection device and monitoring method for construction materials include a support platform 100, a support frame 200, a storage box 300, two storage boxes 400 and a detection module 500. The support frame 200 is fixed to one side of the top surface of the support platform 100. The support frame 200 includes a column 210. The top of the column 210 is rotatably provided with a column 220. The top of the column 220 is fixed with two cylinders 230. The output end of the cylinder 230 is fixed with two arc-shaped pressing plates 240. The storage box 300 is fixedly connected to the column 210 on one side for storing bagged materials. The arc-shaped opening on the top of the storage box 300 is arranged on the arc shaped pressure plate 240; two symmetrically arranged holding boxes 2 400, the bottom of which is rotatably connected to the support table 100, and is used to receive the bagged materials falling from the holding box 1 300; a detection module 500, which is matched with and arranged on one side of the support frame 200, and is used to detect the magnetism around the bagged materials inside the holding boxes 1 300 and 2 400, and the detection module 500 includes two T-shaped frames 510, and a guide rail 520 is fixed between the two T-shaped frames 510, and an electric push rod 540 is slidably connected to the top of the guide rail 520, and a detection probe 600 is rotatably provided at the output end of the electric push rod 540, and the detection probe 600 is electrically connected to a fluxgate magnetometer 620 through a cable.

[0055] Specifically, by fixing a semicircular holding box 300 on the support platform 100, multiple bags of cement placed in the holding box 300 can be bent by the arc-shaped pressing plate 240, and multiple bags of cement can be arranged in a circular shape at equal angles outside the central axis of the holding box 300. By moving the detection probe 600 on the fluxgate magnetometer 620 on the axis of the center of the holding box 300, the detection probe 600 can detect the magnetism of multiple bags of cement at the same time, and determine whether each row of multiple bags of cement meets the weak magnetic construction requirements, which is beneficial to improving the magnetic properties of construction materials. In order to improve the efficiency of detection, the discharge ports at both ends of the storing box 1 300 are connected with the storing box 2 400, and the transmission rod 250 pushes the bagged cement in the storing box 1 300 into the storing box 2 400, and the storing box 2 400 changes the bending direction of the bagged cement. Then, the two storing boxes 2 400 are rotated 180 degrees and moved relative to each other to form a semicircle, so that the replacement sides of multiple bags of cement are surrounded by the detection probe 600, thereby realizing magnetic detection of different sides of multiple bags of cement, which is beneficial to improving the accuracy of the magnetic detection results.

[0056] like Figure 4 As shown, in this embodiment, both ends of the top surface of the support platform 100 are slidably connected with a moving seat 110, and the top of the moving seat 110 is rotatably provided with a supporting shaft 111 fixedly connected to the corresponding position of the second containing box 400.

[0057] In this embodiment, the containing box 2 400 on the movable seat 110 can be manually rotated so that it rotates along the support shaft 111. The containing box 2 400 is rotated at a small angle so that the bottom of the containing box 2 400 is offset from the bottom of the containing box 1 300, which can block the bottom of the containing box 1 300. The two containing boxes 2 400 are rotated 180 degrees and then moved closer to each other along the support platform 100 to be combined into a semicircular box structure similar to the containing box 1 300, so that the side enclosure of the bagged material replacement surface is blocked on the outside of the detection probe 600.

[0058] like Figure 5 As shown, in this embodiment, a crossbeam 221 fixedly connected to the cylinder 230 is fixed on the top of the column 220, and a connecting plate 231 fixedly connected to the arc pressure plate 240 is fixed on the output end of the cylinder 230. The connecting plate 231 enables the two arc pressure plates 240 to be moved by the same cylinder 230, so as to facilitate the simultaneous bending and plasticization of multiple bags of construction materials in the open position of the container 1 300.

[0059] like Figure 5 As shown, in this embodiment, the outer side of the column 210 is rotatably connected to a transmission rod 250, two toggle rods 251 are fixed to the top of the transmission rod 250, and a motor 211 for driving the transmission rod 250 to rotate is fixed to the outer side of the column 210.

[0060] In this embodiment, when it is necessary to transfer the bagged materials in the first containing box 300 to the second containing box 400, the motor 1 211 can drive the transmission rod 250 to rotate forward and reverse successively, so that the toggle rod 251 can respectively toggle the bagged materials bent at both ends of the open position of the first containing box 300 into the second containing box 400. During this process, the toggle rod 251 slides inside the arc-shaped through hole 1 320. When it is necessary to automatically unload the bagged materials in the second containing box 400 after inspection with the help of the toggle rod 251, the arc-shaped through hole 2 420 of the second containing box 400 can be rotated separately. Toward the direction of the toggle rod 251, and then rotate the toggle rod 251 inside the arc-shaped through hole 2 420, so that the bagged material inside the containing box 2 400 can be assisted to be pushed out from the bottom end of the containing box 2 400, and when the bottom end of the containing box 2 400 is toward one end of the support platform 100, the baffle 410 can be removed, and then the bagged material inside the containing box 2 400 can be manually dragged out, wherein the internal space of the containing box 1 300 and the containing box 2 400 is larger than the volume of the bagged material after being flattened, so that the bagged material can be smoothly moved between the containing box 1 300 and the containing box 2 400.

[0061] like Figure 6 As shown, in this embodiment, the containing box 300 is semicircular, and the containing box 300 includes: an arc-shaped partition 310, which is embedded and fixed in the middle position of the inside of the containing box 300, and is used to separate two adjacent bags of construction materials; two arc-shaped through holes 320, which are symmetrically arranged on the inner bottom surface of the containing box 300, and the arc-shaped through holes 320 are slidably connected to the toggle rod 251.

[0062] In this embodiment, the arc partition 310 separates two rows of multiple bags of materials inside the storage box 300, which is convenient for arranging multiple rows of materials for magnetic detection at the same time. The toggle rod 251 can slide inside the arc through hole 320, which is convenient for transferring the bagged materials inside the storage box 300 to the inside of the storage box 400.

[0063] like Figure 4 As shown, in the present embodiment, the second containing box 400 includes: a baffle 410, which is movably plugged into the bottom end of the second containing box 400, and a limited block is fixed on the top of the baffle 410; two arcuate through holes 420, which are symmetrically arranged on the top surface of the second containing box 400, and the arcuate through holes 420 are slidably connected to the toggle rod 251; and an arcuate partition 430, which is embedded and fixed in the middle position of the interior of the second containing box 400, and is used to separate two adjacent bags of construction materials.

[0064] In this embodiment, the arc-shaped partition plate 430 separates the two rows of multiple bags of materials inside the containing box 400, so as to facilitate the simultaneous arrangement of multiple rows of materials for magnetic detection. The toggle rod 251 can slide inside the arc-shaped through hole 420 to facilitate automatic unloading of the containing box 400. The baffle 410 inserted into one end of the containing box 400 can block the discharge end of the containing box 400 in the initial state.

[0065] like Figure 7 As shown, in this embodiment, the top of the guide rail 520 is slidably connected to a slider 530 that is plugged and fixed with the electric push rod 540, and the guide rail 520 includes: a screw rod 521, both ends of the screw rod 521 are rotatably connected to the guide rail 520, and the screw rod 521 is screwed together with the slider 530; a motor 511, the motor 511 is fixed on the outside of the T-shaped frame 510, and the output end of the motor 511 is fixedly connected to one end of the screw rod 521.

[0066] In this embodiment, when the position of the detection probe 600 needs to be adjusted laterally, the motor 2 511 can rotate the screw rod 521 so that the slider 530 screwed together with it can move the detection probe 600 on the electric push rod 540 along the guide rail 520, making it convenient for the detection probe 600 to perform detection operations at different detection stations.

[0067] Embodiment 2, based on embodiment 1, is to adjust the detection probe 600 to a suitable position for magnetic detection.

[0068] like Figure 7 and Figure 8 As shown, in this embodiment, two clamping plates 610 are detachably fixed on the outer side of the detection probe 600, a rotating seat 611 is fixed to the bottom of one clamping plate 610, and a fixed seat 541 rotatably connected to the rotating seat 611 is fixed to the output end of the electric push rod 540. An arc-shaped through hole 3 5411 is formed through the outer side of the fixed seat 541, and a limiting bolt 6111 penetrating the arc-shaped through hole 3 5411 is fixed to the outer side of the rotating seat 611, and a nut is screwed on the end of the limiting bolt 6111.

[0069] Specifically, the detection probe 600 of the fluxgate magnetometer 620 is positioned in the area where the material to be tested is located, and the angular positioning of the geomagnetic field in this area is determined by searching and adjusting, so that the detection probe 600 points from south S to north (N). During the specific adjustment, the clamping plate 610 on the outside of the detection probe 600 is rotated to rotate the rotating seat 611 on the detection probe 600 to a suitable angle position on the fixed seat 541. An inclinometer of the prior art can be installed on the outside of the clamping plate 610 to know the rotation angle of the detection probe 600. When the angle of the detection probe 600 is adjusted to a predetermined position, the nut on the limit bolt 6111 is rotated so that the limit bolt 6111 cannot continue to rotate along the arc-shaped through hole three 5411, so that the position of the rotating seat 611 on the fixed seat 541 is fixed, and then the position of the adjusted detection probe 600 is fixed. Among them, the principle of the fluxgate magnetometer 620 cooperating with the detection probe 600 to detect the magnetism of the material is a prior art, and the specific detection principle is not repeated here.

[0070] In the present invention, since the geomagnetic field is susceptible to fluctuations, it is best to conduct detection at night in an open field (at the same time, ensure that there are no metal substances containing iron, cobalt, nickel, etc. within a radius of 200m, and no materials containing iron phase on the ground) to ensure the authenticity and accuracy of the data.

[0071] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0072] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A construction material magnetic detection device, characterized in that: include: Support table (100); A support frame (200) is fixed to one side of the top surface of the support platform (100), the support frame (200) comprises a first column (210), a second column (220) is rotatably mounted on the top of the first column (210), two cylinders (230) are fixed on the top of the second column (220), and two arc-shaped pressure plates (240) are fixed to the output end of the cylinder (230); A first containing box (300), one side of which is fixedly connected to the first column (210), and is used to contain bagged materials, wherein the arc-shaped opening at the top of the first containing box (300) is arranged below the arc-shaped pressing plate (240); The storage box 1 (300) is semicircular, and the storage box 1 (300) includes: An arc-shaped partition plate 1 (310), the arc-shaped partition plate 1 (310) is embedded and fixed in the middle position of the inner side of the storage box 1 (300), and is used to separate two adjacent bags of construction materials; Two arc-shaped through holes (320), the two arc-shaped through holes (320) are symmetrically arranged on the inner bottom surface of the containing box (300); Two symmetrically arranged second containing boxes (400), the bottoms of which are rotatably connected to the support platform (100), are used to receive the bagged materials dropped from the first containing box (300), the size of the second containing box (400) is half the volume of the first containing box (300), the two second containing boxes (400) are rotated 180 degrees, and then moved closer to each other along the support platform (100), and the second containing boxes (400) and the first containing box (300) can be combined into a circle; The detection module (500) is arranged on one side of the support frame (200) and is used to detect the magnetism around the bagged materials inside the first containing box (300) and the second containing box (400). The detection module (500) comprises two T-shaped frames (510), a guide rail (520) is fixed between the two T-shaped frames (510), an electric push rod (540) is slidably connected to the top of the guide rail (520), a detection probe (600) is rotatably provided at the output end of the electric push rod (540), and the detection probe (600) is electrically connected to a fluxgate magnetometer (620) via a cable.

2. The construction material magnetic detection device according to claim 1, characterized in that: Both ends of the top surface of the support platform (100) are slidably connected to a movable seat (110), and the top of the movable seat (110) is rotatably provided with a support shaft (111) fixedly connected to the corresponding position of the second storage box (400).

3. The construction material magnetic detection device according to claim 2, characterized in that: A crossbeam (221) fixedly connected to the cylinder (230) is fixed on the top of the second upright column (220), and a connecting plate (231) fixedly connected to the arc-shaped pressing plate (240) is fixed on the output end of the cylinder (230).

4. The construction material magnetic detection device according to claim 3, characterized in that: The outer side of the column one (210) is rotatably connected to a transmission rod (250), two toggle rods (251) are fixed to the top of the transmission rod (250), the arc-shaped through hole one (320) is slidably connected to the toggle rods (251), and the outer side of the column one (210) is fixed to a motor one (211) for driving the transmission rod (250) to rotate.

5. The construction material magnetic detection device according to claim 4, characterized in that: The second storage box (400) includes: a baffle (410), the baffle (410) being movably plugged into the bottom end of the second storage box (400), and a limiting block being fixed on the top of the baffle (410); Two arc-shaped through holes (420), the two arc-shaped through holes (420) are symmetrically arranged on the top surface of the second containing box (400), and the arc-shaped through holes (420) are slidably connected to the toggle rod (251); A second arc-shaped partition plate (430), the second arc-shaped partition plate (430) is embedded and fixed in the middle position of the second storage box (400), and is used to separate two adjacent bags of construction materials.

6. The construction material magnetic detection device according to claim 5, characterized in that: The top of the guide rail (520) is slidably connected to a slider (530) plugged and fixed to the electric push rod (540), and the guide rail (520) comprises: A screw rod (521), both ends of which are rotatably connected to the guide rail (520), and the screw rod (521) is screw-connected to the slider (530); Motor 2 (511), the motor 2 (511) is fixed on the outside of the T-shaped frame (510), and the output end of the motor 2 (511) is fixedly connected to one end of the lead screw (521).

7. The construction material magnetic detection device according to claim 6, characterized in that: Two clamping plates (610) are detachably fixed on the outer side of the detection probe (600), a rotating seat (611) is fixed to the bottom of one of the clamping plates (610), and a fixed seat (541) rotatably connected to the rotating seat (611) is fixed to the output end of the electric push rod (540).

8. The construction material magnetic detection device according to claim 7, characterized in that: The outer side of the fixed seat (541) is provided with an arc-shaped through hole three (5411), and the outer side of the rotating seat (611) is fixed with a limiting bolt (6111) that passes through the arc-shaped through hole three (5411), and the end of the limiting bolt (6111) is screwed and connected with a nut.

9. The monitoring method of the construction material magnetic detection device according to claim 8, characterized in that: The monitoring method specifically comprises the following steps: Step 1: Arrange two support platforms (100) in an open space, and place a detection module (500) in front of the two support platforms (100); Step 2: placing multiple bags of cement inside the first storage box (300), and using the cylinder (230) with the arc-shaped pressing plate (240) to bend the multiple bags of cement around the outer side of the central axis of the first storage box (300); Step 4: Adjust the detection direction of the detection probe (600) on the fixing seat (541) so that the device position is in the same direction and angle as the geomagnetic field; Step 5: Detect the environmental geomagnetic field data at the location of the material to be tested and record the value; Step 6: Move the detection probe (600) to the central axis of the first container (300) to detect the magnetic values ​​around the multiple bags of cement; Step 7: Transfer the bagged cement in the first container (300) to the second container (400), rotate and move the two second containers (400) closer to each other, so that the replacement surface of the multiple bags of cement surrounds the outside of the central axis of the first container (300); Step 7: The detection probe (600) detects the magnetic value around the multiple bags of cement again, and after comparing and converting with the environmental geomagnetic field data, a report is generated.

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