CN114166689B

CN114166689B - Aggregate bulk density testing arrangement

Info

Publication number: CN114166689B
Application number: CN202111475439.6A
Authority: CN
Inventors: 梁锦鸿; 凌春辉; 钟志彬
Original assignee: Heshan Lianfa Commercial Concrete Co ltd
Current assignee: Heshan Lianfa Commercial Concrete Co ltd
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-08-23
Anticipated expiration: 2041-12-06
Also published as: CN114166689A

Abstract

The invention discloses a device for testing aggregate stacking density, which comprises a bottom plate and a floating mechanism arranged on the bottom plate, wherein a weighing platform is arranged on the bottom plate, a vertical pipe is arranged on the periphery of the weighing platform and fixedly connected with the bottom plate, a container used for containing aggregate is inserted in the vertical pipe, the container is placed on the weighing platform, a check ring is formed at the upper edge of the container, and the upper end of the vertical pipe is covered by the check ring. This application need not artificial container of cleaning at the survey in-process to improve survey efficiency, the outer wall of container keeps clean moreover, thereby has improved the accuracy of aggregate bulk density testing result.

Description

Aggregate bulk density testing arrangement

Technical Field

The application relates to the technical field of aggregate material determination, in particular to an aggregate bulk density testing device.

Background

Building aggregates require a determination of the bulk density (i.e., mass per unit volume) of the aggregate prior to proportioning to ensure accuracy in subsequent batching.

At present, when the stacking density of the building aggregate is tested, the aggregate is generally freely filled in a certain container, and after the container is filled with the aggregate, the aggregate is generally scraped by a scraping blade. However, when measuring the bulk density of aggregate such as sand and cement, the aggregate sticks to the outer wall of the container after being scraped off by a scraper, and the outer surface of the container needs to be manually wiped clean to ensure the accuracy of the measurement of the bulk density of the aggregate. Then, it takes a lot of time to artificially wipe the outer surface of the container, and aggregates such as sand and cement are difficult to wipe cleanly, which affects not only the test progress, but also the test result.

Disclosure of Invention

In order to improve the accuracy of aggregate bulk density test result, this application provides an aggregate bulk density testing arrangement.

The application provides a aggregate bulk density testing arrangement adopts following technical scheme:

the utility model provides a aggregate bulk density testing arrangement, includes the bottom plate and sets up the mechanism of floating on the bottom plate, install the weighing platform on the bottom plate, the periphery of weighing platform is provided with the riser, riser and bottom plate fixed connection, it has the container that is used for holding the aggregate to peg graft in the riser, the container is placed on the weighing platform, the upper end hem of container is formed with the retaining ring, the retaining ring covers the upper end of riser.

Through adopting above-mentioned technical scheme, when the bulk density of needs survey aggregate, insert the container in the riser, then pour the aggregate into the container, cover the upper end of riser because of the retaining ring for the aggregate can not get into in the space between container and the riser, thereby makes the outer wall of container keep clean. After the aggregate is filled out of the container, the leveling mechanism is used for wiping off the aggregate filled out of the container, so that the aggregate is just filled in the container. The sum of the mass of the aggregate and the mass of the container can be obtained through a weighing platform, the mass of the container is subtracted, and then the sum is divided by the volume of the container, so that the bulk density of the aggregate can be measured. In conclusion, in the measuring process, the container does not need to be manually wiped, so that the measuring efficiency is improved, and the outer wall of the container is kept clean, so that the accuracy of the measuring result of the bulk density of the aggregate is improved.

Preferably, the floating mechanism comprises a support arranged on the bottom plate, a scraping disc and a driving piece driving the scraping disc to move towards the direction close to or away from the vertical pipe are arranged on the support, the lower surface of the scraping disc is flush with the upper surface of the retainer ring, and the diameter of the scraping disc is not smaller than the inner diameter of the container.

Through adopting above-mentioned technical scheme, after the container was filled out to the aggregate, the driving piece ordered about the frid and removed until the frid grabs from the retaining ring top towards the riser to with top layer aggregate flattening, just fill up the container with ensureing the aggregate.

Preferably, slip on the riser and cup jointed the material cover, cup joint on the riser and be fixed with solid fixed ring, gu fixed ring is located the below of material cover, gu be provided with first elastic component between fixed ring and the material cover, when first elastic component is in natural state, the upper surface setting of material cover protrusion retaining ring.

Through adopting above-mentioned technical scheme, keep off the setting of material cover for at the in-process of pouring the aggregate in toward the container, need not to observe the aggregate deliberately and whether fill the container, can directly fill the aggregate to full container, improved survey efficiency. And the upper aggregate in the container is compacted by the aggregate which is full of the container, so that the actual stacking condition is simulated, the upper aggregate is not fluffy, and the determination accuracy of the subsequent aggregate bulk density is improved. The setting of first elastic component, on the one hand to keeping off the material cover and play supporting role, on the other hand makes keeping off the material cover and can slide relative riser to the aggregate that the frizing will fill out the container is scraped off.

Preferably, install first reverse wheel and second reverse wheel on the support, first reverse wheel is located the top of second reverse wheel, gu install the third reverse wheel on the fixed ring, be provided with the stay cord on the scraping plate, the one end that the scraping plate was kept away from to the stay cord is walked around first reverse wheel, second reverse wheel, third reverse wheel in proper order and is kept off the material cover and be connected.

Through adopting above-mentioned technical scheme, when the driving piece ordered about the frizing towards the riser when removing, keep off the material cover and receive decurrent pulling force, when the frizing removed to being close to the riser, keep off the upper surface of material cover and remove to the upper surface that is less than the retaining ring to make the frizing can scrape off the aggregate of full container smoothly. After the driving piece withdraws the turntable, the material blocking sleeve resets under the action of the first elastic piece, so that multiple groups of data can be measured subsequently, and the measurement precision of the aggregate bulk density can be improved.

Preferably, still including scraping the material mechanism, scrape the material mechanism including setting up the bracing piece in keeping off the material cover outside, the bracing piece can rotate around keeping off the material cover, the perpendicular fixedly connected with in upper end of bracing piece scrapes the strip, the one end of scraping the strip and keeping away from the bracing piece extends the setting towards the direction that is close to and keeps off the material cover axis, scrape the scalable setting of strip, the diameter of scraping the dish equals with the internal diameter of container.

Through adopting above-mentioned technical scheme, after the aggregate that the scraping plate will fill out the container is scraped, the upper surface of retaining ring can remain partial aggregate, if not handle in time, then can influence aggregate bulk density's measuring result. For this reason, strike off the back when the aggregate of scraping the dish with full-scale container, the driving piece orders about the scraping dish and moves to being located the container directly over, and the scraping dish shelters from the opening of container, then rotates the bracing piece, thereby scrapes the strip and follows the bracing piece rotation and will remain the aggregate on the retaining ring and scrape down. The existence of scraping plate makes and makes the aggregate on the retaining ring can not pile up again on being located the top layer aggregate of container, and then ensures the accuracy of aggregate bulk density test result.

Preferably, the support rod comprises an outer tube and an inner rod, the inner rod is in sliding insertion with the outer tube, and a second elastic part is fixedly connected between one end, inserted into the outer tube, of the inner rod and the tube bottom of the outer tube.

By adopting the technical scheme, the supporting rod is telescopic, so that the scraping strip can move up under the pushing of the material blocking sleeve, and the container is conveniently installed in the vertical pipe or taken out of the vertical pipe; simultaneously, after the material blocking sleeve moves downwards, the second elastic piece is pulled, so that the scraping strip is tightly abutted to the check ring, and the cleaning effect on the check ring is favorably improved.

Preferably, be provided with on the bottom plate and order about bracing piece pivoted drive assembly, drive assembly is including installing the motor on the bottom plate, the output shaft transmission of motor is connected with the telescopic link, keep off the outer wall fixedly connected with fixed plate of material cover, the telescopic link passes the fixed plate and rotates with the fixed plate to be connected, cup joint the fixedly connected with master gear on the telescopic link, the master gear is located the top of fixed plate, it is fixed with the pinion to keep off to cup joint on the material cover, master gear and pinion meshing transmission, the bracing piece sets up on the pinion.

Through adopting above-mentioned technical scheme, the motor operation orders about the telescopic link and rotates, and the master gear is followed the telescopic link and is rotated and drive pinion rotation, scrapes strip and bracing piece and follows pinion rotation to the aggregate clean up that will remain on the retaining ring.

Preferably, the scraping strip comprises a fixed sleeve fixedly connected with the inner rod, an inserting strip is inserted in the fixed sleeve, a third elastic piece is fixedly connected between one end of the inserting strip inserted in the fixed sleeve and the bottom of the fixed sleeve, one end of the inserting strip, far away from the third elastic piece, is inwards sunken to form an arc-shaped curved surface, and the arc-shaped curved surface is matched with the outer annular surface of the scraping disc.

Through adopting above-mentioned technical scheme for scrape the scalable setting of strip, conveniently put the container of getting on the one hand, on the other hand, at the in-process of the aggregate of clearance residual on the retaining ring, scrape the strip and support tightly in scraping the dish always, thereby be favorable to improving clean dynamics.

Drawings

FIG. 1 is a schematic overall structure of the present application;

fig. 2 is a schematic view of the interior of the riser in the present application.

Description of the reference numerals:

1. a base plate; 2. a weighing platform; 3. a riser; 4. a container; 5. a retainer ring; 6. positioning pins; 7. a material blocking sleeve; 8. a fixing ring; 9. a first spring; 10. a troweling mechanism; 101. a support; 102. a scraping disc; 103. a cylinder; 104. a connecting plate; 11. a first reversing wheel; 12. a second reversing wheel; 13. a third reversing wheel; 14. pulling a rope; 15. a support bar; 151. an outer tube; 152. an inner rod; 153. a second spring; 16. scraping the strips; 161. fixing a sleeve; 162. cutting; 163. a third spring; 17. a drive assembly; 171. a motor; 172. a telescopic rod; 1721. a fixed tube; 1722. a transmission rod; 1723. a chute; 1724. a bump; 173. a fixing plate; 174. a main gear; 175. a pinion gear.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses aggregate bulk density testing arrangement. Referring to fig. 1 and 2, the device comprises a bottom plate 1, wherein a weighing platform 2 and a controller (not shown in the figure) are arranged on the bottom plate 1, and the weighing platform 2 is electrically connected with the controller. The periphery of weighing platform 2 encloses and is equipped with riser 3,

riser

3 and 1 fixed connection of bottom plate, the vertical setting of riser 3. A container 4 for containing aggregate is inserted in the vertical pipe 3, the container 4 is placed on the weighing platform 2, a retainer ring 5 is formed at the outward folded edge of the upper end of the container 4, and the retainer ring 5 is lapped on the upper end of the vertical pipe 3 and covers the upper end of the vertical pipe 3.

Referring to fig. 2, in particular, the collar 5 has an outer diameter equal to the outer diameter of the riser 3. The lower surface of the retainer ring 5 is fixedly connected with a plurality of positioning pins 6, the upper surface of the vertical pipe 3 is sunken to form insertion holes for the insertion of the positioning pins 6, and the positioning pins 6 are inserted into the corresponding insertion holes. Through setting up locating pin 6 and jack, on the one hand conveniently insert riser 3 with container 4 in, on the other hand makes follow-up in-process at the aggregate that the floating container 4 held, container 4 can not rock.

Referring to fig. 1 and 2, a material blocking sleeve 7 is sleeved on the periphery of the vertical pipe 3 in a sliding manner, a fixing ring 8 is fixedly sleeved on the lower end of the vertical pipe 3, and the fixing ring 8 is located below the material blocking sleeve 7. The upper surface of the fixing ring 8 and the lower surface of the material blocking sleeve 7 are fixedly connected with a first elastic part, the first elastic part is a first spring 9, and the first spring 9 is sleeved on the vertical pipe 3. When the first spring 9 is in a natural state, the upper end of the material blocking sleeve 7 protrudes out of the upper surface of the retainer ring 5. Through setting up and keeping off material cover 7, at the in-process of pouring the aggregate toward container 4, need not to observe the aggregate deliberately and whether fill container 4, simultaneously for the upper aggregate in container 4 is by the aggregate compaction of filling out container 4, thereby simulates real windrow condition, with the precision that improves aggregate bulk density survey.

Referring to fig. 1, a floating mechanism 10 is disposed on a base plate 1, the floating mechanism 10 includes a bracket 101 fixed on the base plate 1, and a scraping plate 102 and a driving member for driving the scraping plate 102 to move toward or away from a vertical pipe 3 are disposed on the bracket 101. The driving piece is a cylinder 103, the cylinder 103 is electrically connected with the controller, the cylinder 103 is horizontally arranged, the cylinder body of the cylinder 103 is arranged at the upper end of the support 101, the piston rod of the cylinder 103 is fixedly connected with a connecting plate 104, and the connecting plate 104 is fixed on the upper surface of the scraping disc 102. The lower surface of the scraper disc 102 is flush with the upper surface of the retainer ring 5.

Referring to fig. 1, a first reversing wheel 11 and a second reversing wheel 12 are mounted on a bracket 101, the first reversing wheel 11 is located between a cylinder 103 and the second reversing wheel 12, and a third reversing wheel 13 is mounted on a fixing ring 8. A pull rope 14 is fixedly connected to the connecting strip, and one end of the pull rope 14, which is far away from the connecting strip, sequentially bypasses the first reversing wheel 11, the second reversing wheel 12 and the third reversing wheel 13 and is fixedly connected with the lower surface of the material blocking sleeve 7. In the process that the cylinder 103 drives the scraping disc 102 to move towards the vertical pipe 3, the blocking sleeve 7 is pulled downwards, at this time, the first spring 9 is pressed, and when the scraping disc 102 is close to the vertical pipe 3, the blocking sleeve 7 moves to a position where the upper surface thereof is lower than the upper surface of the retainer ring 5, so that aggregate which is full of the container 4 can be smoothly scraped off by the scraping disc 102. After the surplus aggregate is cleared up, the scraping disc 102 is withdrawn by the air cylinder 103, the first spring 9 rebounds to enable the material blocking sleeve 7 to reset, so that the stacking density of the aggregate can be measured again in the following process, multiple groups of data can be collected conveniently, and the accuracy of a test result can be improved.

Referring to fig. 1 and 2, the testing apparatus further includes a scraping mechanism located at one side of the traveling direction of the scraping tray 102 so as not to hinder the movement of the scraping tray 102. Scraping mechanism is including setting up the bracing piece 15 in keeping off the material cover 7 outside, and bracing piece 15 can rotate around keeping off the material cover 7, and bottom plate 1 is provided with and is used for ordering about the subassembly of ordering about that bracing piece 15 pivoted. The upper end of the supporting rod 15 is provided with a scraping strip 16, one end of the scraping strip 16, which is far away from the inner rod 152, extends towards the axis direction of the material blocking sleeve 7, and the lower surface of the scraping strip 16 is fixedly bonded with a rubber sheet. Initially, the axis of the wiper strip 16 and the axis of the cylinder 103 are arranged perpendicular to each other so that the wiper blade 102 moves.

When the scraping disc 102 scrapes off the aggregate which is full of the container 4, the aggregate is remained on the upper surface of the retaining ring 5, thereby influencing the testing precision of the aggregate bulk density. For this reason, after the aggregate that the scraping plate 102 will fill out the container 4 scrapes off, utilize the cylinder 103 to drive the scraping plate 102 and move to being located the container 4 positive direction, the scraping plate 102 is with the complete sheltering from of container 4, then drive assembly 17 drives the bracing piece 15 and rotates around keeping off the material cover 7, thereby the aggregate that will remain on retaining ring 5 is scraped off to the scraping strip 16 follow bracing piece 15 rotation. The existence of the scraping disc 102 ensures that the aggregate can not be stacked on the surface aggregate of the container 4 again in the scraping process of the scraping strip 16, so as to ensure the accuracy of the measured stacking density of the aggregate.

Referring to fig. 2, in particular, the support rod 15 includes an outer tube 151 and an inner rod 152, and the inner rod 152 is slidably inserted into the outer tube 151. A second elastic member is fixedly connected between one end of the inner rod 152 inserted into the outer tube 151 and the bottom of the outer tube 151, and the second elastic member is a second spring 153. Through with the scalable setting of bracing piece 15, the in-process that keeps off the material cover 7 and move down, scrape strip 16 can with retaining ring 5 butt, afterwards, keep off the material cover 7 and continue to move down, third spring 163 is drawn to make and scrape strip 16 and support tightly in retaining ring 5, thereby be favorable to improving the clean effect.

Referring to fig. 2, the scraping bar 16 includes a fixing sleeve 161 and an insert bar 162, one end of the fixing sleeve 161 is vertically and fixedly connected to the inner rod 152, the insert bar 162 is slidably inserted into the fixing sleeve 161, and a third elastic member is fixedly connected between one end of the insert bar 162 inserted into the fixing sleeve 161 and the bottom of the fixing sleeve 161, and the third elastic member is a third spring 163. The arc-shaped curved surface is arranged at one end of the inserting strip 162 far away from the third spring 163, and the rubber sheet is adhered to the inserting strip 162. Through with the scalable setting of scraping strip 16, make things convenient for dismouting container 4 on the one hand, on the other hand makes scraping strip 16 can support the outer wall of tight scraping plate 102 at the in-process of scraping the aggregate, further improves the cleaning effect.

Referring to fig. 2, the driving assembly 17 includes a motor 171 mounted on the base plate 1, and the motor 171 is electrically connected to the controller. An output shaft of the motor 171 is connected with a telescopic rod 172 in a transmission manner, and the telescopic rod 172 is vertically arranged. The telescopic rod 172 comprises a fixed pipe 1721 fixedly connected with an output shaft of the motor 171, a transmission rod 1722 is inserted in the fixed pipe 1721 in a sliding mode, a sliding groove 1723 is formed in the fixed pipe 1721 along the length of the fixed pipe, a projection 1724 is arranged on the peripheral wall of the transmission rod 1722 in a protruding mode, and the projection 1724 is inserted in the sliding groove 1723 in a sliding mode. The fixed pipe 1721 and the transmission rod 1722 can be synchronously rotated by arranging the protrusion 1724 and the sliding slot 1723.

Referring to fig. 2, the outer wall of the striker plate is fixedly connected with a fixing plate 173, and one end of the transmission rod 1722, which is far away from the fixing tube 1721, is rotatably connected with the fixing plate 173 through a bearing. Through setting up fixed plate 173 for the transfer line 1722 can follow and keep off the material cover 7 and follow vertical direction synchronous motion. A main gear 174 is fixed on the transmission rod 1722 in a sleeved manner, the main gear 174 is located above the fixing plate 173, a pinion 175 is sleeved on the material blocking sleeve 7, the pinion 175 is rotatably connected with the material blocking sleeve 7 through a bearing, the pinion 175 is meshed with the main gear 174 for rotation, and the lower end of the outer tube 151 is fixedly connected with the upper surface of the pinion 175. When the residual aggregate on the retainer ring 5 needs to be cleaned, the motor 171 drives the telescopic rod 172 to rotate, the main gear 174 rotates along with the telescopic rod 172 and drives the pinion 175 to rotate, the supporting rod 15 rotates along with the pinion 175 and drives the scraping strip 16 to rotate, so that the residual aggregate on the retainer ring 5 is cleaned, the outer surface of the container 4 is kept clean, and the accuracy of the aggregate bulk density measurement result is ensured.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a aggregate bulk density testing arrangement which characterized in that: the device comprises a bottom plate (1) and a floating mechanism (10) arranged on the bottom plate (1), wherein a weighing platform (2) is arranged on the bottom plate (1), a vertical pipe (3) is arranged on the periphery of the weighing platform (2), the vertical pipe (3) is fixedly connected with the bottom plate (1), a container (4) for containing aggregate is inserted in the vertical pipe (3), the container (4) is placed on the weighing platform (2), a retainer ring (5) is formed at the upper end edge of the container (4), and the upper end of the vertical pipe (3) is covered by the retainer ring (5);

a material blocking sleeve (7) is sleeved on the vertical pipe (3) in a sliding mode, a fixing ring (8) is sleeved and fixed on the vertical pipe (3), the fixing ring (8) is located below the material blocking sleeve (7), a first elastic piece is arranged between the fixing ring (8) and the material blocking sleeve (7), and when the first elastic piece is in a natural state, the material blocking sleeve (7) protrudes out of the upper surface of the retainer ring (5);

the floating mechanism (10) comprises a support (101) arranged on a bottom plate (1), a scraping disc (102) and a driving piece for driving the scraping disc (102) to move towards the direction close to or away from the vertical pipe (3) are arranged on the support (101), the driving piece is an air cylinder (103), the air cylinder (103) is horizontally arranged, the cylinder body of the air cylinder (103) is arranged at the upper end of the support (101), a connecting plate (104) is fixedly connected to the piston rod of the air cylinder (103), the scraping disc (102) is fixedly connected with the connecting plate (104), the lower surface of the scraping disc (102) is flush with the upper surface of a check ring (5), and the diameter of the scraping disc (102) is equal to the inner diameter of a container (4);

a first reversing wheel (11) and a second reversing wheel (12) are mounted on the support (101), the first reversing wheel (11) is located above the second reversing wheel (12), a third reversing wheel (13) is mounted on the fixing ring (8), a pull rope (14) is arranged on the connecting plate (104), and one end, far away from the connecting plate (104), of the pull rope (14) sequentially bypasses the first reversing wheel (11), the second reversing wheel (12) and the third reversing wheel (13) and is connected with the material blocking sleeve (7);

the material scraping mechanism comprises a supporting rod (15) arranged on the outer side of the material blocking sleeve (7), the supporting rod (15) can rotate around the material blocking sleeve (7), a scraping strip (16) is vertically and fixedly connected to the upper end of the supporting rod (15), one end, far away from the supporting rod (15), of the scraping strip (16) extends towards the direction close to the axis of the material blocking sleeve (7), and the scraping strip (16) is arranged in a telescopic mode;

the support rod (15) comprises an outer tube (151) and an inner rod (152), the inner rod (152) is in sliding insertion connection with the outer tube (151), and a second elastic piece is fixedly connected between one end, inserted into the outer tube (151), of the inner rod (152) and the bottom of the outer tube (151).

2. The aggregate bulk density testing device of claim 1, wherein: a driving component (17) for driving the supporting rod (15) to rotate is arranged on the bottom plate (1), the drive assembly (17) comprises a motor (171) mounted on the base plate (1), an output shaft of the motor (171) is connected with a telescopic rod (172) in a transmission way, the outer wall of the material blocking sleeve (7) is fixedly connected with a fixing plate (173), the telescopic rod (172) penetrates through the fixed plate (173) and is rotationally connected with the fixed plate (173), a main gear (174) is fixedly connected to the telescopic rod (172) in a sleeved mode, the main gear (174) is located above the fixing plate (173), the material blocking sleeve (7) is sleeved with a pinion (175), the pinion (175) is rotatably connected with the material blocking sleeve (7) through a bearing, the main gear (174) is in meshed transmission with the pinion (175), and the supporting rod (15) is arranged on the pinion (175).

3. The aggregate bulk density testing device of claim 2, wherein: the scraping strip (16) comprises a fixing sleeve (161) fixedly connected with the inner rod (152), an inserting strip (162) is inserted in the fixing sleeve (161), a third elastic piece is fixedly connected between one end, inserted into the fixing sleeve (161), of the inserting strip (162) and the bottom of the fixing sleeve (161), one end, far away from the third elastic piece, of the inserting strip (162) is inwards sunken to form an arc-shaped curved surface, and the arc-shaped curved surface is matched with the outer annular surface of the scraping disc (102).