Mechanism sand on-line detection device and detection method thereof

Abstract

The application relates to the technical field of machine-made sand and discloses a machine-made sand online detection device and a detection method thereof, which comprise a conveying unit, a transmission unit and a discharging unit. The conveying unit comprises a conveying belt body and a mounting frame, and the mounting frame is arranged above the conveying belt body. The discharging unit comprises a plurality of placing boxes, each of which is arranged in the inner cavity of the mounting frame. Each mounting frame is linearly distributed and symmetrically arranged between two mounting frames. In the application, workers place machine-made sand into the placing boxes. When the placing is completed, the workers detect the weight of each placing box through the sensor arranged in the weighing assembly. When the weight in the placing box is detected, the workers control the operation of the heating plate so that the heating plate can heat the placed placing box, thus evaporating the moisture in the machine-made sand, and then the weight of the machine-made sand at the moment is weighed through the weighing assembly, so that whether the water absorption rate meets the standard is judged.

Description

Technical Field

[0001] The present invention belongs to the technical field of machine-made sand, and in particular relates to an online detection device for machine-made sand and a detection method thereof. Background Art

[0002] As infrastructure construction continues to expand, manufactured sand, as an important alternative to natural sand, is widely used in areas such as concrete and road construction. As the construction industry's requirements for project quality continue to increase, the quality of manufactured sand directly impacts key performance indicators such as strength and durability. Therefore, accurate and efficient testing of manufactured sand quality has become an urgent need for the industry's development.

[0003] However, when the moisture content of the existing machine-made sand is tested, it is necessary to pour out the machine-made sand after the test is completed because the machine-made sand is placed in a box and heated before testing. However, the existing machine-made sand is often poured out by staff, so when pouring out the machine-made sand, it is easy for the machine-made sand to generate impact force with the conveyor belt, thereby causing damage or deformation of the conveyor belt.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0006] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein the linking rod and the linking rod are pivotally connected to each other with a bolt, and the bolt has a round shank to contact with the bottom of the wood-planer working table. The bolt has a round shank to contact with the bottom of the wood-planer working table. The bolt has a round shank to contact with the bottom of the wood-planer working table.

[0007] As a preferred embodiment of the present invention, the conveyor belt body and the bottom of the mounting frame are respectively provided with a first supporting leg and a second supporting leg, a circular slot is opened at the bottom of the mounting frame, and the mounting frame is respectively provided with a first movable slot and a second movable slot on both sides of the circular slot.

[0008] As a preferred embodiment of the present invention, the drive assembly includes a servo motor, which is arranged above the mounting frame. A rotating rod is provided at the output end of the servo motor, and two guide slots are provided on the rotating rod. Guide sliders are slidably provided in the inner cavities of the two guide slots. The two guide sliders are respectively provided with a first guide sleeve and a second guide sleeve. Two guide rods are movably passed through the first guide sleeve and the second guide sleeve, respectively. The two guide rods are symmetrical to each other, and their upper parts are respectively fixedly connected to the upper part of the inner cavity of the mounting frame.

[0009] As a preferred embodiment of the present invention, circular grooves are provided on the outer sides of the first guide sleeve and the second guide sleeve, two sliders are slidingly provided in the inner cavities of the two circular grooves, and the two sliders are symmetrical to each other, a first fixing plate and a second fixing plate are provided between each of the four sliders, and a heating plate is provided on the opposite side walls of the two first fixing plates and the second fixing plates.

[0010] As a preferred embodiment of the present invention, four connecting rods that are symmetrical to each other are provided on the rotating rod, and telescopic rods are respectively provided above the opposite ends of the four connecting rods, and the tops of the four telescopic rods are respectively provided at the bottom of the first fixed plate and the second fixed plate.

[0011] As a preferred embodiment of the present invention, two sliding grooves are respectively provided on the two opposite side walls of the inner cavity of the mounting frame, the four sliding grooves are symmetrical with each other, and movable slide rods are slidingly arranged between each two of the four sliding grooves, the four movable slide rods are symmetrical with each other, and bearings are respectively provided on the one side walls opposite to each other of the four movable slide rods.

[0012] As a preferred embodiment of the present invention, a plurality of driving grooves are further provided on the opposite side walls of the inner cavity of the mounting frame, and each of the driving grooves is symmetrical with each other, and a driving slider is slidingly provided in the inner cavity of each driving groove, and each of the driving sliders is symmetrical with each other, and each of the driving sliders is connected to a first guide cylinder and a second guide cylinder at opposite ends thereof, and a return spring is provided in the inner cavity of each driving groove, and the other end of each return spring is respectively provided on the driving slider.

[0013] As a preferred embodiment of the present invention, each of the first guide cylinders and the second guide cylinders are symmetrical to each other, and each of the first guide cylinders and the second guide cylinders are respectively fitted in the first moving slot and the second moving slot.

[0014] As a preferred embodiment of the present invention, third guide cylinders are provided on both sides of the first guide sleeve, and the two third guide cylinders are respectively provided at the bottom of the heating plate, and the two third guide cylinders are respectively aligned with the first guide cylinders, and mounting brackets are respectively provided on both side walls of the two third guide cylinders, and each mounting bracket is vertically slidably provided on the inner wall of the mounting frame.

[0015] As a preferred embodiment of the present invention, an online detection method for machine-made sand comprises the following steps:

[0016] Step 1: First, the staff puts the machine-made sand into the placement box. When the placement is completed, the staff uses the sensor set in the weighing component to detect the weight of each placement box;

[0017] Step 2: When the weight in the placement box is detected, the staff controls the operation of the heating plate to heat the placement box, thereby evaporating the moisture in the machine-made sand. The weight of the machine-made sand at this time is then measured by the weighing component to determine whether its water absorption rate meets the standard.

[0018] Step 3: When weighing is completed, the staff controls the operation of the driving component so that the driving component can drive the heating plate to move vertically downward and rotate until the heating plate leaves the bottom of the placement box. At this time, the placement box can be flipped, so that the machine-made sand falls into the third guide cylinder and the second guide cylinder;

[0019] Step 4: When the machine-made sand falls into the third guide cylinder, it will be able to enter the first guide cylinder, so that the machine-made sand can fall onto the conveyor belt body for transmission, thereby completing the unloading.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] In the present invention, the staff places the machine-made sand into the placement box. When the placement is completed, the staff detects the weight of each placement box through the sensor provided in the weighing component. When the weight in the placement box is detected, the staff controls the operation of the heating plate to allow the heating plate to heat the placed placement box, thereby evaporating the moisture in the machine-made sand, and then obtains the weight of the machine-made sand at this time through the weighing component, thereby judging whether its water absorption rate meets the standard.

[0022] The present invention controls the heating plate to rotate while moving vertically downward through the driving component, so that the heating plate can drive the first guide cylinder, the second guide cylinder and the third guide cylinder to move vertically downward until the heating plate rotates away from the bottom of the placement box. At this time, the placement box can be flipped over. When the placement box is flipped over to a certain position, the machine-made sand placed in the placement box can be poured out, thereby entering the third guide cylinder and the first guide cylinder. At this time, the second guide cylinder can be reset with the assistance of the reset spring, so that the second guide cylinder and the third guide cylinder fit together, thereby ensuring that the machine-made sand can be unloaded, ensuring the guiding effect of the first guide cylinder, the second guide cylinder and the third guide cylinder, and reducing the impact force generated when the machine-made sand is unloaded.

[0023] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In the attached figure:

[0025] Figure 1 This is a schematic diagram of the three-dimensional structure of an online detection device for machine-made sand;

[0026] Figure 2 This is a side structural diagram of an online detection device for machine-made sand;

[0027] Figure 3 This is a schematic diagram of the installation frame structure of an online detection device for machine-made sand;

[0028] Figure 4 An online detection device for machine-made sand Figure 3 A in the middle is an enlarged structural diagram;

[0029] Figure 5 This is a schematic diagram of the upward structure of the installation frame of a machine-made sand online detection device;

[0030] Figure 6 This is a schematic diagram of the partial structure of the inner cavity of the installation frame of an online detection device for machine-made sand;

[0031] Figure 7 This is a schematic diagram of a partial upward view of the inner cavity of the installation frame of a machine-made sand online detection device;

[0032] Figure 8 An online detection device for machine-made sand Figure 7 Enlarged structural diagram at point B in the middle.

[0033] In the picture:

[0034] 100, transmission unit; 101, transmission belt body; 1011, first support leg; 102, mounting frame; 1021, second support leg;

[0035] 200, transmission unit; 201, servo motor; 2011, rotating rod; 2012, guide chute; 2013, guide slider; 2014, first guide sleeve; 2015, second guide sleeve; 2016, guide rod; 202, circular chute; 2021, slider; 2022, connecting rod; 2023, telescopic rod; 203, circular notch; 2031, first movable notch; 2032, second movable notch; 204, first fixed plate; 2041, heating plate; 2042, weighing assembly; 2043, second fixed plate;

[0036] 300, unloading unit; 301, placement box; 3011, rotating rod; 3012, bearing; 3013, torsion spring; 3014, sliding slot; 3015, moving slide; 302, first guide cylinder; 3021, driving slide groove; 3022, driving slider; 3023, return spring; 303, second guide cylinder; 304, third guide cylinder. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0038] Example 1:

[0039] like Figures 1 to 8As shown, an online detection device for machine-made sand includes a transmission unit 100, a transmission unit 200 and a feeding unit 300. The transmission unit 100 includes a conveyor belt body 101 and a mounting frame 102. The mounting frame 102 is arranged above the conveyor belt body 101; the feeding unit 300 includes a plurality of placement boxes 301, each placement box 301 is respectively arranged in the inner cavity of the mounting frame 102, each mounting frame 102 is linearly distributed, and is symmetrical between each other, and each mounting frame 102 has two opposite side walls provided with a rotating rod 3011, and each rotating rod 3011 has a shaft provided on the opposite side wall. Bearing 3012, and a torsion spring 3013 is provided on the side wall opposite to the bearing 3012 and the mounting frame 102, each torsion spring 3013 is respectively provided on the rotating rod 3011, and the torsion spring 3013 is used to drive the mounting frame 102 to rotate; the transmission unit includes a driving assembly and a plurality of heating plates 2041, each heating plate 2041 is respectively provided at the bottom of the placement box 301, each heating plate 2041 is symmetrical with each other, and weighing assemblies 2042 are respectively provided on both sides of each heating plate 2041, and a sensor is provided in the weighing assembly 2042, and the driving assembly is used to drive the heating plate 2041 to rotate. The driving component controls the heating plate 2041 to move vertically downward while also being able to rotate, so the heating plate 2041 can drive the first guide cylinder 302, the second guide cylinder 303 and the third guide cylinder 304 to move vertically downward until the heating plate 2041 rotates away from the bottom of the placement box 301. At this time, the placement box 301 can be flipped over. When the placement box 301 is flipped over to a certain position, the machine-made sand placed in the placement box 301 can be poured out and enter the third guide cylinder 304 and the first guide cylinder 302. At this time, the second guide cylinder 303 can be reset with the assistance of the reset spring 3023, so that the second guide cylinder 303 and the third guide cylinder 304 fit together, thereby ensuring that the machine-made sand can be unloaded.

[0040] like Figures 1 to 2 As shown, in a specific embodiment, the bottom of the conveyor body 101 and the mounting frame 102 are respectively provided with a first support leg 1011 and a second support leg 1021. The bottom of the mounting frame 102 is provided with a circular notch 203. The mounting frame 102 is provided with a first movable notch 2031 and a second movable notch 2032 on either side of the circular notch 203. In this configuration, the mounting components of the mounting frame 102 and the conveyor body 101 are determined.

[0041] like Figures 1 to 3 and Figures 5 to 7As shown, the drive assembly further includes a servo motor 201, which is mounted above the mounting frame 102. A rotating rod 2011 is provided at the output end of the servo motor 201. The rotating rod 2011 has two guide slots 2012 formed therein. Guide sliders 2013 are slidably disposed within the inner cavities of the two guide slots 2012. The two guide sliders 2013 are respectively provided with a first guide sleeve 2014 and a second guide sleeve 2015. The first guide sleeve 2014 and the second guide sleeve 2015 are respectively provided with two guide rods 2016 that are movably passed through. The two guide rods 2016 are symmetrical to each other and are fixedly connected above the inner cavity of the mounting frame 102. In this configuration, the installation position and components of the drive assembly are determined.

[0042] As shown Figures 1 to 3 and Figures 5 to 8 As shown, further, the outer walls of the first guide sleeve 2014 and the second guide sleeve 2015 are each provided with a circular groove 202. Two sliders 2021 are slidably disposed within the inner cavities of the two circular grooves 202. The two sliders 2021 are symmetrical to each other. A first fixing plate 204 and a second fixing plate 2043 are disposed between each of the four sliders 2021. A heating plate 2041 is disposed on opposite side walls of the first fixing plates 204 and the second fixing plates 2043. This arrangement ensures that the movement of the first guide sleeve 2014 and the second guide sleeve 2015 can drive the movement of the first fixing plates 204 and the second fixing plates 2043.

[0043] As shown Figures 1 to 3 and Figures 5 to 7 As shown, the rotating rod 2011 is further provided with four mutually symmetrical connecting rods 2022, each of which is provided with a telescopic rod 2023 above the opposite ends of each of the four connecting rods 2022. The four telescopic rods 2023 are respectively provided above the bottom of the first fixing plate 204 and the second fixing plate 2043. This arrangement ensures that the first fixing plate 204 and the second fixing plate 2043 can rotate.

[0044] Example 2:

[0045] The difference between the above embodiment and this embodiment is that: Figures 1 to 4 As shown, an online detection device for manufactured sand is provided. Two sliding slots 3014 are respectively provided on opposite sides of the inner cavity of the mounting frame 102. The four sliding slots 3014 are symmetrical with each other. A movable slide bar 3015 is slidably disposed between each pair of the four sliding slots 3014. The four movable slide bars 3015 are symmetrical with each other. Bearings 3012 are respectively provided on opposite sides of the four movable slide bars 3015. In this configuration, the mounting position of the bearings 3012 is determined.

[0046] like Figures 1 to 3 and Figures 5 to 7 As shown, in a specific embodiment, a plurality of driving grooves 3021 are further provided on the opposite side walls of the inner cavity of the mounting frame 102, and each driving groove 3021 is symmetrical with each other, and a driving slider 3022 is slidingly provided in the inner cavity of each driving groove 3021, and each driving slider 3022 is symmetrical with each other, and the opposite ends of each driving slider 3022 are respectively connected to the first guide cylinder 302 and the second guide cylinder 303, and the inner cavity of each driving groove 3021 is provided with a return spring 3023, and the other end of each return spring 3023 is respectively provided on the driving slider 3022. In this setting, when the heating plate 2041 rotates and moves vertically downward following the first fixed plate 204 and the second fixed plate 2043, it will be able to squeeze the first guide cylinder 302 and the second guide cylinder 303 to move vertically downward. When the heating plate 2041 separates from the first guide cylinder 302 and the second guide cylinder 303 during the rotation process, the first guide cylinder 302 and the second guide cylinder 303 can be reset with the assistance of the driving groove 3021, the driving slider 3022 and the reset spring 3023, so that the third guide cylinder 304 and the second guide cylinder 303 can be aligned, thereby ensuring that the machine-made sand can enter the third guide cylinder 304.

[0047] like Figures 1 to 3 and Figures 5 to 7 As shown, further, each first guide cylinder 302 and second guide cylinder 303 are symmetrical to each other, and each first guide cylinder 302 and second guide cylinder 303 are respectively fitted in the first movable slot 2031 and the second movable slot 2032. In this arrangement, the opening positions of the first movable slot 2031 and the second movable slot 2032 are determined.

[0048] like Figures 1 to 3 and Figures 5 to 7 As shown, further, third guide cylinders 304 are provided on both sides of the first guide sleeve 2014. The two third guide cylinders 304 are respectively provided at the bottom of the heating plate 2041. The two third guide cylinders 304 are respectively aligned with the first guide cylinder 302. Mounting brackets are respectively provided on both side walls of the two third guide cylinders 304. Each mounting bracket is vertically slidably provided on the inner wall of the mounting frame 102. In this arrangement, the third guide cylinders 304 are ensured to be able to move vertically.

[0049] Example 3:

[0050] The present invention also discloses an online detection method for machine-made sand, which comprises the following steps:

[0051] Step 1: First, the staff places the machine-made sand into the placement box 301. When the placement is completed, the staff detects the weight of each placement box 301 through the sensor provided in the weighing component 2042;

[0052] Step 2: When the weight in the placement box 301 is detected, the staff controls the operation of the heating plate 2041 to heat the placement box 301, thereby evaporating the moisture in the machine-made sand. The weight of the machine-made sand is then measured by the weighing component 2042 to determine whether its water absorption rate meets the standard.

[0053] Step 3: When weighing is completed, the staff controls the operation of the driving assembly so that the driving assembly can drive the heating plate 2041 to move vertically downward and rotate until the heating plate 2041 leaves the bottom of the placement box 301. At this time, the placement box 301 can be turned over, so that the machine-made sand falls into the third guide cylinder 304 and the second guide cylinder 303;

[0054] Step 4: When the machine-made sand falls into the third guide cylinder 304 , it will be able to enter the first guide cylinder 302 , so that the machine-made sand can fall onto the conveyor belt body 101 for transmission, thereby completing the unloading.

[0055] The implementation principle of the online detection device for machine-made sand in this embodiment is as follows:

[0056] First, the staff puts the machine-made sand into the placement box 301. When the placement is completed, the staff detects the weight of each placement box 301 through the sensor set in the weighing component 2042.

[0057] When the weight in the placement box 301 is detected, the staff controls the operation of the heating plate 2041 to heat the placement box 301, thereby evaporating the moisture in the machine-made sand. The weight of the machine-made sand at this time is then measured by the weighing component 2042 to determine whether its water absorption rate meets the standard.

[0058] When weighing is completed, the staff controls the servo motor 201 to operate. When the servo motor 201 operates, it can drive the rotating rod 2011 to rotate. When the rotating rod 2011 rotates, it can drive the first guide sleeve 2014 and the second guide sleeve 2015 to slide vertically with the assistance of the guide groove 2012, the guide slider 2013 and the guide rod 2016.

[0059] Because the first guide sleeve 2014 and the second guide sleeve 2015 are respectively provided with a circular slide 202, and the inner cavity of the circular slide 202 is slidably provided with a slider 2021, and the first fixed plate 204 and the second fixed plate 2043 respectively provided at the other end of the slider 2021 move vertically downward, because the first fixed plate 204 and the second fixed plate 2043 are provided with a telescopic rod 2023 at the bottom, and the other end of the telescopic rod 2023 is fixedly connected to the connecting rod 2022, and the connecting rod 2022 is fixedly connected to the rotating rod 2011, it is possible to ensure that the first fixed plate 204 and the second fixed plate 2043 can rotate and move vertically downward, when the first fixed plate 204 and the second fixed plate 2043 move vertically downward, they can drive the heating plate 2041 to rotate and move vertically downward, and at the same time, they can also drive the weighing assembly 2042 to rotate and move vertically downward;

[0060] When the heating plate 2041 leaves the bottom of the placement box 301, the placement box 301 can rotate with the help of the torsion spring 3013. When the placement box 301 rotates, the machine-made sand can fall into the first guide cylinder 302 and the third guide cylinder 304 provided below. When the machine-made sand falls into the first guide cylinder 302, it will be able to enter the second guide cylinder 303 (because when the heating plate 2041 follows the first fixed plate 204 and the second fixed plate 2043 to rotate and move vertically downward, it will be able to squeeze the first guide cylinder 302 and the second guide cylinder 303 to move vertically downward. When the heating plate 2041 separates from the first guide cylinder 302 and the second guide cylinder 303 during the rotation, the first guide cylinder 302 and the second guide cylinder 303 can be reset with the assistance of the driving slide groove 3021, the driving slider 3022 and the return spring 3023, so that the third guide cylinder 304 and the second guide cylinder 303 can be aligned, thereby ensuring that the machine-made sand can enter the third guide cylinder 304). With the assistance of the first guide cylinder 302, the second guide cylinder 303 and the third guide cylinder 304, the impact force of the machine-made sand when it falls onto the conveyor belt body 101 can be reduced, and at the same time, it can also ensure that the machine-made sand in the placement box 301 can be discharged.

Claims

1. An online detection device for machine-made sand, comprising a transmission unit (100), a drive unit (200) and a discharge unit (300), characterized in that: The transmission unit (100) comprises a transmission belt body (101) and a mounting frame (102), wherein the mounting frame (102) is arranged above the transmission belt body (101); The blanking unit (300) comprises a plurality of placement boxes (301), each of the placement boxes (301) being respectively arranged in the inner cavity of the mounting frame (102), each of the mounting frames (102) being linearly distributed and symmetrical with each other, a rotating rod (3011) being provided on opposite side walls of each of the mounting frames (102), a bearing (3012) being provided on opposite side walls of each of the rotating rods (3011), and a torsion spring (3013) being provided on the side wall opposite to the bearing (3012) and the mounting frame (102), each of the torsion springs (3013) being respectively arranged on the rotating rod (3011), and the torsion spring (3013) being used to drive the mounting frame (102) to rotate; The transmission unit comprises a driving assembly and a plurality of heating plates (2041), each of the heating plates (2041) being respectively arranged at the bottom of the placement box (301), each of the heating plates (2041) being symmetrical with each other, a weighing assembly (2042) being respectively arranged on both sides of each heating plate (2041), a sensor being arranged in the weighing assembly (2042), and the driving assembly being used for driving the heating plates (2041) to rotate; The driving assembly comprises a servo motor (201), the servo motor (201) being arranged above the mounting frame (102), a rotating rod (2011) being arranged at the output end of the servo motor (201), two guide slots (2012) being provided on the rotating rod (2011), guide sliders (213) being slidably arranged in the inner cavities of the two guide slots (2012), a first guide sleeve (2014) and a second guide sleeve (2015) being respectively arranged on the two guide sliders (2013), two guide rods (216) being movably passed through the first guide sleeve (2014) and the second guide sleeve (2015), the two guide rods (2016) being symmetrical to each other and fixedly connected to the upper part of the inner cavity of the mounting frame (102) at their upper parts; The outer walls of the first guide sleeve (2014) and the second guide sleeve (2015) are both provided with circular grooves (202), and two sliders (2021) are respectively slidably provided in the inner cavities of the two circular grooves (202), and the two sliders (2021) are symmetrical to each other, and a first fixing plate (204) and a second fixing plate (2043) are respectively provided between two of the four sliders (221), and heating plates (2041) are respectively provided on opposite side walls of the two first fixing plates (204) and the second fixing plates (2043); The rotating rod (211) is provided with four mutually symmetrical connecting rods (2022), and telescopic rods (2023) are respectively provided above the opposite ends of the four connecting rods (222), and the tops of the four telescopic rods (2023) are respectively provided at the bottom of the first fixed plate (204) and the second fixed plate (2043); Two sliding slots (3014) are respectively provided on two opposite side walls of the inner cavity of the mounting frame (102), and the four sliding slots (3014) are symmetrical with each other. A movable slide rod (3015) is slidably provided between each of the four sliding slots (3014), and the four movable slide rods (3015) are symmetrical with each other. A bearing (3012) is respectively provided on one side wall of each of the four movable slide rods (3015). A plurality of driving slots (3021) are further provided on opposite side walls of the inner cavity of the mounting frame (102), each of the driving slots (3021) being symmetrical with each other, a driving slider (3022) being slidably provided in the inner cavity of each driving slot (3021), each of the driving sliders (3022) being symmetrical with each other, and a first guide cylinder (302) and a second guide cylinder (303) being connected at opposite ends of each driving slider (3022), a return spring (3023) being provided in the inner cavity of each driving slot (3021), and the other end of each return spring (3023) being provided on the driving slider (3022). Each of the first guide cylinders (302) and the second guide cylinders (303) are symmetrical to each other, and each of the first guide cylinders (302) and the second guide cylinders (303) are respectively fitted in the first movable slot (2031) and the second movable slot (2032).

2. The machine-made sand online detection device according to claim 1, characterized in that: The bottom of the conveyor belt body (101) and the mounting frame (102) are respectively provided with a first supporting leg (1011) and a second supporting leg (1021); a circular notch (203) is provided at the bottom of the mounting frame (102); and the mounting frame (102) is respectively provided with a first movable notch (2031) and a second movable notch (2032) on both sides of the circular notch (203).

3. A method for online detection of machine-made sand, characterized in that: An online detection device for machine-made sand applied to any one of claims 1 to 2, and an online detection method for machine-made sand, comprising the following steps: Step 1: First, the staff places the machine-made sand into the placement box (301). When the placement is completed, the staff detects the weight of each placement box (301) through the sensor provided in the weighing component (2042); Step 2: When the weight in the placement box (301) is detected, the staff controls the operation of the heating plate (2041) to heat the placement box (301) so as to evaporate the water in the machine-made sand. The weight of the machine-made sand at this time is measured by the weighing component (2042) to determine whether its water absorption rate meets the standard. Step 3: When the weighing is completed, the staff controls the operation of the driving component so that the driving component can drive the heating plate (2041) to rotate while moving vertically downward until the heating plate (2041) leaves the bottom of the placement box (301). At this time, the placement box (301) can be turned over to allow the machine-made sand to fall into the third guide cylinder (304) and the second guide cylinder (303); Step 4: When the machine-made sand falls into the third guide cylinder (304), it will be able to enter the first guide cylinder (302), and the machine-made sand will fall onto the conveyor belt body (101) for transmission, completing the unloading.

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