Machine-made sand sphere detection device

Abstract

The utility model provides a machine-made sand sphere detection device which comprises a rack, a downward camera is fixed on the upper portion of the rack, a supporting plate is arranged below the camera and detachably connected to the rack, a through hole penetrating through the upper surface and the lower surface is formed in the middle of the supporting plate, and a flexible detection bowl is fixed in the through hole. The detection bowl is an arc-shaped bowl which is concave downwards and has different colors, a top head is arranged under the middle of the detection bowl, the top head is in transmission connection with a lifting driving device used for driving the top head to ascend and descend, and the top head is used for jacking the flexible detection bowl upwards to enable the machine-made sand in the detection bowl to rotate. The device is simple in structure, small in size, suitable for outdoor or on-site detection, low in cost, capable of achieving automatic overturning and automatic photographing of machine-made sand, free of manual overturning, simple, convenient to use and high in efficiency.

Description

Technical Field

[0001] The utility model relates to the field of machine-made sand detection, in particular to a machine-made sand sphere detection device. Background Art

[0002] Artificial sand refers to sand processed by sand making machines and other auxiliary equipment. It can be processed into sand of different rules and sizes according to different process requirements to meet daily needs. Since my country's sand consumption is large and there is a large gap in natural sand, artificial sand, as an effective supplement to natural sand, can well alleviate the contradiction between supply and demand of natural sand.

[0003] The production process of machine-made sand is that the stone is initially crushed by the coarse crusher, and then the coarse material is conveyed by the belt conveyor to the fine crusher for further crushing. The finely crushed stone enters the vibrating screen to screen out two kinds of stone. The stone that meets the feed particle size of the sand making machine enters the sand making machine to make sand, and the other part is returned to the fine crusher. Part of the stone entering the sand making machine is made into sand, which is cleaned by the sand washing machine to become finished sand, and the other part enters the sand making machine for crushing again.

[0004] After production, artificial sand needs to be tested to see if its size and volume meet the standards. The equipment currently used to test artificial sand is large and complex, not suitable for outdoor or on-site testing, and is expensive, increasing enterprise costs. Utility Model Content

[0005] The utility model provides a machine-made sand sphere detection device, which solves the problem that the current equipment used to detect machine-made sand is large and complex, not suitable for outdoor or on-site detection, and is expensive, increasing enterprise costs.

[0006] The technical solution of the utility model is achieved in this way:

[0007] A device for detecting machine-made sand balls comprises a frame, a downward-facing camera is fixed on the upper part of the frame, a support plate is arranged below the camera, the support plate is detachably connected to the frame, a through hole is opened in the middle of the support plate and passes through the upper and lower surfaces, a flexible detection bowl is fixed in the through hole, the detection bowl is a curved bowl that is concave downward and has a certain color, a top is arranged just below the middle of the detection bowl, the top drive is connected to a lifting drive device for driving the top to rise and fall, and the top is used to lift the flexible detection bowl upward to rotate the machine-made sand in the detection bowl.

[0008] Furthermore, the camera is fixedly connected to the frame via a fixing rod or a fixing plate.

[0009] Furthermore, it also includes a dust-proof sleeve with an open end, a circle of magnetic ring I is fixed to the mouth of the dust-proof sleeve, a circle of magnetic ring II is arranged on the top side of the camera, and the dust-proof sleeve is detachably sleeved outside the camera through the cooperation of the magnetic ring I and the magnetic ring II.

[0010] Furthermore, at least one set of symmetrical fixing devices for fixing the support plate is fixed on both sides of the frame, and the fixing devices include a U-shaped piece with an opening facing horizontally inward, a threaded through hole is opened on the upper surface or the lower surface of the U-shaped piece, and a locking nut is arranged in the threaded through hole.

[0011] Furthermore, the detection bowl is a green bowl, a blue bowl or a yellow bowl.

[0012] Furthermore, the detection bowl includes a horizontal outer edge portion and a concave arc portion in the middle.

[0013] Furthermore, the detection bowl is fixed on the support plate by glue or screws.

[0014] Furthermore, the detection bowl is a flexible silicone bowl.

[0015] Furthermore, the upper end surface of the plug is an arc-shaped surface.

[0016] Furthermore, the lifting drive device is an upward electric cylinder, the head is fixed to the upper end of the telescopic rod of the electric cylinder, and the electric cylinder is fixedly connected to the frame through a fixing rod I or a fixing plate I.

[0017] The beneficial effects of the utility model are as follows: when the utility model is used, the machine-made sand to be tested is placed in the middle of the test bowl, and then the camera takes a picture of the machine-made sand. After taking the picture, the lifting drive device drives the top head to rise upward, and the top head lifts the flexible test bowl to turn over the machine-made sand in the test bowl. Then the top head drops and resets, and the machine-made sand in the test bowl is randomly turned over, and the upward surface changes. Then the camera takes a picture of the machine-made sand again, and the above steps are repeated until 4 pictures of the machine-made sand are taken randomly. The pictures taken by the camera are transmitted to the back-end for processing. The device has a simple structure and a compact size, is suitable for outdoor or on-site testing, and has low cost. In addition, it can realize automatic turning over and taking pictures of the machine-made sand without manual turning over. It is simple, convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the camera, magnetic ring II and fixing plate;

[0021] Figure 3 It is a schematic diagram of the structure of the detection bowl;

[0022] Figure 4 It is a schematic diagram of the structure of the dustproof casing.

[0023] Reference numerals in the figure: 1-frame, 2-camera, 21-fixed plate, 22-magnetic ring II, 3-support plate, 31-through hole, 4-detection bowl, 41-outer edge, 42-arc-shaped portion, 5-top, 6-dust-proof sleeve, 61-magnetic ring I, 71-U-shaped piece, 72-locking nut, 8-electric cylinder. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Reference Figure 1-4 A device for detecting machine-made sand balls comprises a frame 1, a camera 2 facing downward is fixed on the upper part of the frame 1, a support plate 3 is arranged below the camera 2, the support plate 3 is detachably connected to the frame 1, a through hole 31 penetrating the upper and lower surfaces is opened in the middle of the support plate 3, a flexible detection bowl 4 is fixed in the through hole 31, the detection bowl is an arc-shaped bowl which is concave downward and has a certain color, a top head 5 is arranged just below the middle of the detection bowl 4, the top head 5 is transmission-connected with a lifting drive device for driving the top head to lift and lower, and the top head 5 is used to lift the flexible detection bowl 4 upward to rotate the machine-made sand in the detection bowl.

[0026] As a further implementation, the camera 2 is fixedly connected to the frame 1 via a fixing rod or a fixing plate 21 .

[0027] As a further embodiment, a dust-proof sleeve 6 with an open end is further included, a circle of magnetic ring I61 is fixed to the mouth of the dust-proof sleeve 6, a circle of magnetic ring II22 is arranged around the top of the camera 2, and the dust-proof sleeve 6 is detachably sleeved on the outside of the camera 2 through the cooperation of the magnetic ring I61 and the magnetic ring II22. The dust-proof sleeve 6 can be put on when the device is not in use to prevent dust and protect the camera 2, and then unplugged when in use.

[0028] As a further embodiment, at least one set of symmetrical fixing devices for fixing the support plate 3 are fixed on both sides of the frame 1, and the fixing devices include a U-shaped piece 71 with an opening facing horizontally inward, and a threaded through hole is opened on the upper surface or the lower surface of the U-shaped piece, and a locking nut 72 is arranged in the threaded through hole.

[0029] As a further embodiment, the detection bowl 4 is a green bowl, a blue bowl or a yellow bowl. The detection bowl 4 is different in color from the support plate, so there will be a clear dividing line, which is convenient for the camera to take pictures. The colored detection bowl 4 can contrast with the machine-made sand, and the photo effect is good (no transparent detection bowl is needed). The distance from the camera 2 to the inner bottom surface of the detection bowl 4 is about 25-40 cm.

[0030] As a further embodiment, the detection bowl 4 includes a horizontal outer edge portion 41 and a concave arc portion 42 in the middle.

[0031] As a further implementation, the detection bowl 4 is fixed on the support plate 3 by glue or screws.

[0032] As a further implementation, the detection bowl 4 is a flexible silicone bowl.

[0033] As a further embodiment, the upper end surface of the plug 5 is an arc-shaped surface.

[0034] As a further implementation, the lifting drive device is an upward electric cylinder 8 , and the push head 5 is fixed to the upper end of the telescopic rod of the electric cylinder 8 .

[0035] As a further implementation, the electric cylinder 8 is fixedly connected to the frame via a fixing rod I81 or a fixing plate I.

[0036] Working principle of the utility model: When the utility model is used, the machine-made sand to be tested is placed in the middle of the test bowl 4, and then the camera 2 takes a picture of the machine-made sand. After taking the picture, the lifting drive device drives the top head 5 to rise upward, and the top head 5 lifts the flexible test bowl 4 to turn over the machine-made sand in the test bowl 4, and then the top head 5 drops and resets, and the machine-made sand in the test bowl 4 is randomly turned over, and the upward surface changes, and then the camera 2 takes a picture of the machine-made sand again, and the above steps are repeated until 4 pictures of the machine-made sand are taken randomly, and the pictures taken by the camera 2 are transmitted to the back-end for processing.

[0037] The program on the back-end computer pre-processes the image and processes the image into a two-dimensional image; obtains the circularity of the same machine-made sand particle in the two-dimensional image in multiple directions, and obtains the spherical similarity of the machine-made sand particle based on the circularity in each direction. The circularity of the same machine-made sand particle is the ratio of the projected area of ​​the machine-made sand particle to the area of ​​its minimum circumscribed circle, and the formula is:

[0038]

[0039] Among them, Y is the circularity of the machine-made sand particles, G is the particle projection area, S is the minimum circumscribed circle area of ​​the projected particles, L is the maximum particle size of the projected particles, and D is the minimum circumscribed circle diameter of the projected particles.

[0040] The calculation formula for the spherical similarity of the machine-made sand particles is:

[0041]

[0042] Among them, Q is the spherical similarity of the machine-made sand particles, ∑Y is the sum of the circularity of the same machine-made sand particles in n projection directions, and n is the total number of spatial projection directions (generally, four photos in four directions are enough, and more photos are also acceptable).

[0043] The device has a simple structure and a small size, is suitable for outdoor or on-site detection, and has low cost. In addition, it can realize automatic turning over of machine-made sand and automatic photography without manual turning over, which is simple, convenient and efficient.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for detecting machine-made sand balls. Features: It includes a frame, a downward-facing camera is fixed on the upper part of the frame, a support plate is arranged below the camera, the support plate is detachably connected to the frame, a through hole is opened in the middle of the support plate and passes through the upper and lower surfaces, a flexible detection bowl is fixed in the through hole, the detection bowl is an arc-shaped bowl that is concave and has a certain color, a top is arranged just below the middle of the detection bowl, the top drive is connected to the lifting drive device for driving the top to lift, and the top is used to lift the flexible detection bowl upward to flip the machine-made sand in the detection bowl.

2. The machine-made sand ball detection device according to claim 1, Features: The camera is fixedly connected to the frame via a fixing rod or a fixing plate.

3. The machine-made sand ball detection device according to claim 1, Features: It also includes a dust-proof sleeve with an open end, a magnetic ring I is fixed to the mouth of the dust-proof sleeve, a magnetic ring II is arranged on the top side of the camera, and the dust-proof sleeve is detachably mounted on the outside of the camera through the cooperation of the magnetic ring I and the magnetic ring II.

4. The machine-made sand ball detection device according to claim 1, Features: At least one set of symmetrical fixing devices for fixing the support plate is fixed on both sides of the frame, and the fixing devices include a U-shaped piece with an opening facing inward horizontally, a threaded through hole is opened on the upper surface or the lower surface of the U-shaped piece, and a locking nut is arranged in the threaded through hole.

5. The machine-made sand ball detection device according to claim 1, Features: The detection bowl is a green bowl, a blue bowl or a yellow bowl.

6. The machine-made sand ball detection device according to claim 1, Features: The detection bowl comprises a horizontal outer edge portion and a concave arc portion in the middle.

7. The machine-made sand ball detection device according to claim 1, Features: The detection bowl is fixed on the support plate by glue or screws.

8. The machine-made sand ball detection device according to claim 1, Features: The detection bowl is a flexible silicone bowl.

9. The machine-made sand ball detection device according to claim 1, Features: The upper end surface of the top head is an arc-shaped surface.

10. The machine-made sand ball detection device according to claim 1, Features: The lifting drive device is an upward electric cylinder, the top head is fixed to the upper end of the telescopic rod of the electric cylinder, and the electric cylinder is fixedly connected to the frame through a fixing rod I or a fixing plate I.

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