Coarse aggregate close packing density automatic detection device

Abstract

The invention discloses a coarse aggregate close packing density automatic detection device, and belongs to the technical field of aggregate performance detection, the coarse aggregate close packing density automatic detection device comprises a jolting mechanism, the jolting mechanism comprises a first push rod, the top telescopic end of the first push rod is provided with an electronic scale, and the two sides of the first push rod are both provided with third push rods; a second push rod is arranged between the first push rod and each third push rod, pinnacle supporting rods are arranged on the other two sides of the first push rod, a jolting supporting plate is arranged on the tops of the two pinnacle supporting rods, a jolting butt joint groove is formed in the middle of the bottom face of the jolting supporting plate, and a supporting cylinder is arranged on the outer side of the jolting supporting plate; the top of the supporting cylinder is rotationally connected with a supporting ring, positioning push rods arranged in an annular array are arranged on the inner circumference of the supporting ring, a steering motor is installed on the inner side wall of the supporting cylinder, and a transmission gear is installed at the upper end of a driving shaft of the steering motor and is in meshing transmission with the inner circumference of the supporting ring. The bulk density of the coarse aggregate can be automatically tested, and the process is stable and high in consistency.

Description

Technical Field

[0001] The invention relates to the technical field of aggregate performance detection, in particular to an automatic detection device for the dense packing density of coarse aggregate. Background Art

[0002] Aggregate bulk density refers to the mass of material particles per unit volume of aggregate (including material particle solids and their closed and open pore volume and the volume of voids between particles). It is divided into dry bulk density and wet bulk density. It is one of the important physical indicators of aggregate. At present, the bulk density of aggregate mainly adopts the aggregate bulk density test specified in "GB / T14684-2022 Construction Sand" and relevant industry standards. The existing aggregate bulk density test is completed manually throughout the process, and the impact process cannot be quantitatively controlled. Finally, manual top cutting and filling of gaps are required. The test results vary from person to person and are highly discrete.

[0003] The application document with publication number CN116559023A discloses an automatic testing device and method for aggregate bulk density, which includes a bracket with a capacity cylinder inside; a scraper is provided above the capacity cylinder, and the scraper moves back and forth under the action of a driving mechanism; the bottom of the capacity cylinder is open, and a flap is provided at the bottom of the capacity cylinder, and the flap can be rotatably set by a flipping mechanism; a weighing hopper is provided below the capacity cylinder, and the weighing hopper is used to receive the material in the capacity cylinder, and a gate door is provided at the discharge port of the weighing hopper; the driving mechanism and the flipping mechanism are both connected to the control unit; the weighing hopper is carried on a weight sensor, and the weight sensor is connected to the processing unit to transmit the collected weight data to the processing unit, and the processing unit stores the volume data of the capacity cylinder, thereby calculating the bulk density.

[0004] The above patent and the prior art have the following deficiencies: the prior art is completed manually, and there are omissions, omissions and rough estimates in the completion process, resulting in a large dispersion of test results; the above patent uses vibration compaction instead of shaking compaction during testing, and the weighing of the above patent is easily interfered by the vibration mechanism, and the top cutting can easily cause the aggregate to scatter, causing various interferences. Summary of the Invention

[0005] The purpose of the present invention is to provide an automatic detection device for the dense packing density of coarse aggregate in order to improve the overall work efficiency in view of the above-mentioned problems and shortcomings.

[0006] The present invention solves at least one of the following technical problems:

[0007] (1) The existing technology is completed manually, and there are omissions, omissions, and rough estimates in the completion process, resulting in large discreteness of the test results;

[0008] (2) The above patent adopts vibration compaction instead of shaking compaction during testing, and the weighing is easily disturbed by the vibration mechanism. The top cutting can easily cause the aggregate to scatter, causing various interferences.

[0009] The purpose of the present invention can be achieved through the following technical solutions: An automatic detection device for the tight packing density of coarse aggregate, including a shaking mechanism, the shaking mechanism includes a first push rod, the top telescopic end of the first push rod is equipped with an electronic scale, third push rods are provided on both sides of the first push rod, and a second push rod is provided between the first push rod and each third push rod, and the other two sides of the first push rod are provided with pointed support rods, and the tops of the two pointed support rods are jointly provided with a shaking support plate, and a shaking docking groove is provided in the middle of the bottom surface of the shaking support plate, and a supporting cylinder is provided on the outside of the shaking support plate, and a supporting ring is rotatably connected to the top of the supporting cylinder, and a positioning push rod arranged in a ring array is provided on the inner circumference of the supporting ring, and a steering motor is installed on the inner side wall of the supporting cylinder, and a transmission gear is installed on the upper end of the driving shaft of the steering motor, and the transmission gear is meshed with the inner circumference of the support ring for transmission.

[0010] Preferably, the upper middle portion of the impact support plate is rotatably connected to a first circular plate, and the top portion of the first circular plate is rotatably connected to a second circular plate.

[0011] Preferably, a container is placed on the striking mechanism, and a connecting ring is installed on the bottom edge of the container. The inner diameter of the connecting ring is consistent with the outer diameter of the second circular plate, and a number of positioning bolts evenly distributed in a circular array are threaded through the side wall of the connecting ring.

[0012] Preferably, a support base is provided below the striking mechanism, support side plates are provided on both sides of the support base, a support top plate is installed on the top of the support side plates, and a guide hopper is passed through the middle of the support top plate.

[0013] Preferably, a dual-axis slide is installed in the middle of the lower surface of the supporting top plate, the center of the moving area of ​​the dual-axis slide is coaxial with the guide hopper, and a scanner is installed at the moving end of the dual-axis slide.

[0014] Preferably, a scraping mechanism is installed between the two supporting side plates, and the scraping mechanism includes a scraping support plate. Both sides of the scraping support plate are provided with lifting slides, and each lifting slide is embedded in the inner side wall of the supporting side plate.

[0015] Preferably, a docking circular groove corresponding to the containing cylinder is opened in the middle of the scraping support plate, and the inner diameter of the docking circular groove is consistent with the outer diameter of the containing cylinder.

[0016] Preferably, both sides of the scraping support plate are penetrated by grooves and a material guiding square tube frame is installed in the groove, and a storage box is clamped and installed at the lower part of the material guiding square tube frame.

[0017] Preferably, a smoothing platform is provided between the two supporting side plates, the smoothing platform is provided on one side edge of the smoothing support plate, a smoothing rod is slidably connected to the smoothing support plate, and the smoothing rod is connected to the movable end of the smoothing platform.

[0018] Preferably, a stroke counting sensor is installed at the top movable end of the third push rod.

[0019] Beneficial effects of the present invention:

[0020] (1) When working, it can automatically test the bulk density of coarse aggregate, and adjust the inclination angle of the containing cylinder and the height difference of the impact by the third push rod, so as to adapt to different test regulations. Through the connection support of the impact docking groove and the pointed support rod, the device can be made consistent with the impact process required by the impact test, and will not cause problems such as sliding and shaking caused by the test support steel bars. The second push rod is reciprocated to start and reset, and the containing cylinder is impacted, so that the force of each impact is consistent, making the impact process stable and highly consistent, avoiding interference with the discreteness of the test results;

[0021] (2) During operation, the supporting ring, positioning push rod, steering motor and transmission gear work together to enable the container to accurately rotate 90 degrees after every 25 strokes, further avoiding interference with the discreteness of the test results;

[0022] (3) During operation, the first push rod pushes the electronic scale and the container during weighing, thereby weighing the contained aggregate stably and accurately, avoiding interference from impacting components, making the weight test accurate and efficient, and further avoiding interference with the discreteness of the test results;

[0023] (4) During operation, when the container is filled with aggregate and the volume of the contained aggregate is detected, the scanner is moved by the biaxial slide to perform a three-dimensional scan of the top of the contained aggregate, and the volume of the top surface of the aggregate protruding from the top end surface of the container and the volume of the vacant space are detected, thereby accurately obtaining volume data;

[0024] (5) During operation, the scraping mechanism is used to prevent the ejection of crushed stones when the material is dropped, to prevent interference with the operation of the knocking mechanism, and to collect the ejected crushed stones. When it is necessary to scrape the top of the container, the scraping table moves the scraping rod to scrape the excess aggregate from the container, and pushes the scraped aggregate onto the scraping support plate into the material guide square drum rack, and collects it in the storage box, so that the scanner can perform three-dimensional scanning and accurate volume measurement of the protrusions and gaps on the top of the aggregate, thereby obtaining accurate volume data and weight data. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0026] Figure 1 This is a front view of the overall structure of the present invention;

[0027] Figure 2 It is a cross-sectional view of the internal structure of the present invention;

[0028] Figure 3 This is a cross-sectional view of the internal structure of the striking mechanism of the present invention from a front perspective;

[0029] Figure 4 for Figure 3 A magnified schematic diagram of area A in the middle;

[0030] Figure 5 A cross-sectional view of the internal structure of the striking mechanism of the present invention from a side view;

[0031] Figure 6 This is a front view of the overall structure of the scraping mechanism of the present invention;

[0032] In the figure: 101, support base; 102, impact mechanism; 103, filling cylinder; 104, support side plate; 105, scraping mechanism; 106, support top plate; 107, guide hopper; 201, first push rod; 202, electronic scale; 203, second push rod; 204, third push rod; 205, pointed top support rod; 206, impact support plate; 207, impact docking groove; 208, first circular plate; 209, second Circular plate; 210, connecting ring; 211, positioning bolt; 212, supporting cylinder; 213, supporting ring; 214, positioning push rod; 215, steering motor; 216, transmission gear; 301, scraping support plate; 302, docking groove; 303, material guide square tube rack; 304, storage box; 305, scraping smoothing table; 306, scraping rod; 307, lifting slide; 401, dual-axis slide; 402, scanner. DETAILED DESCRIPTION

[0033] The specific embodiments of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0034] See also Figure 1-6As shown: An automatic detection device for the dense packing density of coarse aggregate, including a shaking mechanism 102, the shaking mechanism 102 includes a first push rod 201, the top telescopic end of the first push rod 201 is installed with an electronic scale 202, both sides of the first push rod 201 are provided with a third push rod 204, a second push rod 203 is provided between the first push rod 201 and each third push rod 204, the other two sides of the first push rod 201 are provided with a pointed support rod 205, the tops of the two pointed support rods 205 are jointly provided with a shaking support plate 206, and the middle of the bottom surface of the shaking support plate 206 is provided with a shaking docking Groove 207, the tip of the pointed support rod 205 is engaged with the impact docking groove 207, and a support cylinder 212 is provided on the outside of the impact support plate 206. The top of the support cylinder 212 is rotatably connected to the support ring 213. The inner circumference of the support ring 213 is provided with positioning push rods 214 arranged in a ring array. A steering motor 215 is installed on the inner side wall of the support cylinder 212. A transmission gear 216 is installed on the upper end of the drive shaft of the steering motor 215. The transmission gear 216 is meshed with the inner circumference of the support ring 213 for transmission. A strike counting sensor is installed on the top movable end of the third push rod 204;

[0035] When this embodiment is working, it can automatically test the compact density of coarse aggregate. First, the third push rods 204 on both sides are synchronously lifted up, so that the third push rods 204 on both sides can support the support plate 206 and keep it horizontal to prevent the container 103 from tilting and shaking. Then, the tested aggregate is transported to the container 103 according to regulations through the guide hopper 107. After being transported to a height of one-third of the volume of the container 103, the height of the third push rods 204 on both sides is first lowered, and the height difference between the movable end of the third push rod 204 and the tip of the pointed support rod 205 is consistent with the height difference between the movable end of the third push rod 204 and the tip of the pointed support rod 205. The diameter of the striking shaft rod meets the requirements. According to the latest regulations, the height difference is 16 mm. When the third push rod 204 moves down, the containing cylinder 103 will tilt to the side as one of the third push rods 204 moves down. Then, after the third push rod 204 stops, the second push rod 203 on that side moves up, pushing the containing cylinder 103 to the other side and tilting it, so that the containing cylinder 103 tilts to the other side and abuts against the movable end of the third push rod 204 on the other side. After tilting, the second push rod 203 on that side is reset, thereby completing a striking. Then, the second push rod 203 on the other side moves up, so that The filling cylinder 103 is tilted and abuts against the corresponding third push rod 204, and the second push rod 203 on the other side is reset to complete the second knock, and then repeat until a continuous twenty-five knocks are completed, and the knock counting sensor on the top of the third push rod 204 counts. After the first section is completed, the third push rod 204 is reset and the knock support plate 206 is horizontal, and then the positioning push rod 214 is extended and abuts against the side wall of the filling cylinder 103, and the transmission gear 216 is rotated by the steering motor 215, thereby pushing the support ring 213 to rotate, and through the positioning push rod 21 4 drives the containing cylinder 103 to rotate synchronously, and by controlling the speed and duration of the steering motor 215, the containing cylinder 103 is rotated 90 degrees as required, and then the aggregate is again loaded at a height of one-third of the cylinder depth and the above-mentioned shaking steps are repeated until the containing cylinder 103 is filled. After filling, the accurate volume of the aggregate is measured, and the electronic scale 202 is pushed by the first push rod 201 to obtain the weight of the contained aggregate through comparison and calculation. Then, the compacted packing density test is calculated and completed. After completion, the containing cylinder 103 is removed and emptied directly, so that other subsequent compacted packing density tests can be quickly carried out.

[0036] A first circular plate 208 is rotatably connected to the upper middle portion of the impact support plate 206, and a second circular plate 209 is rotatably connected to the top of the first circular plate 208. A container 103 is placed on the impact mechanism 102, and a connecting ring 210 is installed on the bottom edge of the container 103. The inner diameter of the connecting ring 210 is consistent with the outer diameter of the second circular plate 209. A plurality of positioning bolts 211 are evenly distributed in a circular array and threadedly penetrate the side wall of the connecting ring 210.

[0037] During operation, the first circular plate 208 and the second circular plate 209 facilitate the support ring 213 and the positioning push rod 214 to flexibly rotate the container 103, and the connecting ring 210 and the positioning bolt 211 facilitate the container 103 to remain stable during the shaking process.

[0038] A support base 101 is provided below the impact mechanism 102. Support side plates 104 are provided on both sides of the support base 101. A support top plate 106 is installed on the top of the support side plates 104. A guide hopper 107 is provided in the middle of the support top plate 106. A biaxial slide 401 is installed in the middle of the lower surface of the support top plate 106. The center of the moving area of ​​the biaxial slide 401 is coaxial with the guide hopper 107. A scanner 402 is installed at the moving end of the biaxial slide 401.

[0039] During operation, when the containing cylinder 103 is filled with aggregate and the volume of the contained aggregate begins to be detected, the scanner 402 is moved by the dual-axis slide 401, and the top of the contained aggregate is scanned in three dimensions by the scanner 402 to detect the volume of the top surface of the aggregate protruding from the top end face of the containing cylinder 103 and the vacant volume. The volume of the vacant space is subtracted from the volume of the containing cylinder 103 and the convex volume is added to obtain the accurate volume of the aggregate.

[0040] The lifting mechanism 307 is installed between the two supporting side plates 104, and the lifting mechanism 105 includes a scraping support plate 301. The scraping support plate 301 is provided with a lifting slide 307 on both sides. Each lifting slide 307 is embedded in the inner wall of the supporting side plate 104. The middle of the scraping support plate 301 is provided with a docking circular groove 302 corresponding to the filling cylinder 103. The inner diameter of the docking circular groove 302 is consistent with the outer diameter of the filling cylinder 103. Both sides of the scraping support plate 301 are penetrated by grooves and a material guide square cylinder frame 303 is installed in the groove. The lower part of the material guide square cylinder frame 303 is clamped and installed with a storage box 304. A scraping smooth platform 305 is provided between the two supporting side plates 104, and the scraping smooth platform 305 is provided on one side edge of the scraping support plate 301. A scraping rod 306 is slidably connected to the scraping support plate 301, and the scraping rod 306 is connected to the movable end of the scraping smooth platform 305;

[0041] When the embodiment is working, when the aggregate is conveyed into the containing cylinder 103 through the guide hopper 107, the lifting slide 307 moves down the scraping support plate 301, and makes the docking circular groove 302 fit with the containing cylinder 103. After fitting, the top end surface of the containing cylinder 103 is flush with the upper surface of the scraping support plate 301, and then the material is conveyed, thereby preventing the ejection of crushed stones when the material is dropped, preventing interference with the operation of the bumping mechanism 102, and collecting the ejected crushed stones. When it is necessary to scrape the top of the containing cylinder 103 , through the docking circular groove 302 and the corresponding fitting of the containing cylinder 103, after fitting, the top end surface of the containing cylinder 103 is flush with the upper surface of the leveling support plate 301, and then the smoothing table 305 moves the leveling rod 306 to scrape the excess aggregate from the containing cylinder 103, and push the scraped aggregate into the material guide square tube rack 303 on the leveling support plate 301, and collect it through the storage box 304, so that the scanner 402 can perform three-dimensional scanning and accurate volume measurement of the protrusions and gaps on the top of the aggregate.

[0042] In summary, the third push rod 204 is used to adjust the inclination angle of the containing cylinder 103 and the height difference of the impact, so as to adapt to different test regulations. The connection support of the impact docking groove 207 and the pointed support rod 205 can make the present device consistent with the impact process required by the impact test, and will not cause problems such as sliding and shaking caused by the test support steel bars. The second push rod 203 is reciprocated to start and reset, and the containing cylinder 103 is impacted, so that the force of each impact is consistent, making the impact process stable and highly consistent, and avoiding interference with the discreteness of the test results.

[0043] Through the cooperation of the support ring 213, the positioning push rod 214, the steering motor 215 and the transmission gear 216, the container 103 can accurately rotate 90 degrees after every 25 bumps, further avoiding interference with the discreteness of the test results;

[0044] During weighing, the first push rod 201 pushes the electronic scale 202 and the containing cylinder 103, thereby stably and accurately weighing the contained aggregate, avoiding interference from impacting components, making the weight test accurate and efficient, and further avoiding interference with the discreteness of the test results;

[0045] When the container 103 is filled with aggregate and the volume of the aggregate is measured, the scanner 402 is moved by the biaxial slide 401 to perform a three-dimensional scan of the top of the aggregate, detecting the volume of the top surface of the aggregate protruding from the top end surface of the container 103 and the volume of the gap, thereby accurately obtaining volume data.

[0046] The scraping mechanism 105 is used to prevent gravel from being ejected when the material is dropped, to prevent interference with the operation of the impact mechanism 102, and to collect the ejected gravel. When it is necessary to scrape the top of the containing cylinder 103, the scraping table 305 moves the scraping rod 306 to scrape the excess aggregate from the containing cylinder 103, and push the scraped aggregate into the material guide square tube rack 303 on the scraping support plate 301, and collect it through the storage box 304, so as to facilitate the scanner 402 to perform three-dimensional scanning and accurate volume measurement of the protrusions and gaps on the top of the aggregate, thereby obtaining accurate volume data and weight data.

[0047] The above disclosures are only a few specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the scope of protection of the present invention.

Claims

1. An automatic detection device for the dense packing density of coarse aggregate, characterized in that: The invention comprises a shaking mechanism (102), wherein the shaking mechanism (102) comprises a first push rod (201), an electronic scale (202) is installed at the top telescopic end of the first push rod (201), third push rods (204) are provided on both sides of the first push rod (201), a second push rod (203) is provided between the first push rod (201) and each third push rod (204), and a pointed support rod (205) is provided on the other two sides of the first push rod (201), and a shaking support plate (206) is provided on the top of the two pointed support rods (205). 06) is provided with a knock docking groove (207) in the middle of the bottom surface, a support cylinder (212) is provided on the outside of the knock support plate (206), a support ring (213) is rotatably connected to the top of the support cylinder (212), a positioning push rod (214) arranged in a ring array is provided on the inner circumference of the support ring (213), a steering motor (215) is installed on the inner side wall of the support cylinder (212), a transmission gear (216) is installed on the upper end of the driving shaft of the steering motor (215), and the transmission gear (216) is meshed with the inner circumference of the support ring (213) for transmission.

2. The automatic detection device for dense packing density of coarse aggregate according to claim 1, characterized in that: The upper middle portion of the impact support plate (206) is rotatably connected to a first circular plate (208), and the top portion of the first circular plate (208) is rotatably connected to a second circular plate (209).

3. The automatic detection device for dense packing density of coarse aggregate according to claim 2, characterized in that: A container (103) is placed on the knocking mechanism (102), and a connecting ring (210) is installed on the bottom edge of the container (103). The inner diameter of the connecting ring (210) is consistent with the outer diameter of the second circular plate (209), and a plurality of positioning bolts (211) evenly distributed in a circular array are threadedly penetrated on the side wall of the connecting ring (210).

4. The automatic detection device for dense packing density of coarse aggregate according to claim 3, characterized in that: A support base (101) is provided below the impact mechanism (102), support side plates (104) are provided on both sides of the support base (101), a support top plate (106) is installed on the top of the support side plates (104), and a guide hopper (107) is passed through the middle of the support top plate (106).

5. The automatic detection device for dense packing density of coarse aggregate according to claim 4, characterized in that: A biaxial slide (401) is installed in the middle of the lower surface of the supporting top plate (106), the center of the moving area of ​​the biaxial slide (401) is coaxial with the guide hopper (107), and a scanner (402) is installed at the moving end of the biaxial slide (401).

6. The automatic detection device for dense packing density of coarse aggregate according to claim 1, characterized in that: A scraping mechanism (105) is installed between the two supporting side plates (104). The scraping mechanism (105) includes a scraping support plate (301). Both sides of the scraping support plate (301) are provided with lifting slides (307). Each lifting slide (307) is embedded and installed on the inner side wall of the supporting side plate (104).

7. The automatic detection device for dense packing density of coarse aggregate according to claim 6, characterized in that: A docking circular groove (302) corresponding to the containing cylinder (103) is provided in the middle of the scraping support plate (301), and the inner diameter of the docking circular groove (302) is consistent with the outer diameter of the containing cylinder (103).

8. The automatic detection device for dense packing density of coarse aggregate according to claim 6, characterized in that: Both sides of the scraping support plate (301) are penetrated by grooves, and a material guiding square tube frame (303) is installed in the grooves, and a storage box (304) is clamped and installed at the lower part of the material guiding square tube frame (303).

9. The automatic detection device for dense packing density of coarse aggregate according to claim 1, characterized in that: A smoothing platform (305) is provided between the two supporting side plates (104). The smoothing platform (305) is provided on one side edge of the smoothing support plate (301). A smoothing rod (306) is slidably connected to the smoothing support plate (301). The smoothing rod (306) is connected to the movable end of the smoothing platform (305).

10. The automatic detection device for dense packing density of coarse aggregate according to claim 1, characterized in that: A strike counting sensor is installed at the top movable end of the third push rod (204).

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