CN211504909U - Mechanism sand water absorption rate survey device - Google Patents
Mechanism sand water absorption rate survey device Download PDFInfo
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- CN211504909U CN211504909U CN201922425553.2U CN201922425553U CN211504909U CN 211504909 U CN211504909 U CN 211504909U CN 201922425553 U CN201922425553 U CN 201922425553U CN 211504909 U CN211504909 U CN 211504909U
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Abstract
The utility model discloses a mechanism sand water absorption rate survey device, set up drying device in the box, tamping unit and slump section of thick bamboo examination mould, adopt the stirring and dry to mechanism sand with the mode of pot body heating, drying efficiency is greatly improved, and simultaneously, the problem that mountain flour content reduces in the mechanism sand that the current air-dry in-process caused has also been solved, consequently, can effectively guarantee the measurement accuracy of the water absorption rate of mechanism sand, secondly, through the bottom opening at the pot body, make the mechanism sand after the drying from flowing into the slump section of thick bamboo examination mould, and adopt the tamping unit to tamp the mechanism sand after the drying, the process of manual filling machine system sand has been avoided, measurement efficiency is improved, carry out the tamping through the tamping unit at last, operating personnel's intensity of labour has been reduced.
Description
Technical Field
The utility model relates to a cement concrete fine aggregate property measurement technical field specifically is a mechanism sand water absorption rate survey device.
Background
The fine aggregate is an important component of cement concrete, wherein the fine aggregate comprises two main types of natural sand and machine-made sand, and the machine-made sand is widely used in the cement concrete due to the shortage of river sand at present. The water absorption rate of the machine-made sand is one of important physical properties of the machine-made sand, influences the water demand and the water cement ratio in the mix proportion of the cement concrete, and further influences the workability of the cement concrete construction, wherein the workability of the cement concrete construction influences the difficulty of construction and the strength and durability of the cement concrete in the later period. At present, the water absorption of the machine-made sand is measured by a method T0330-2005 in aggregate test procedure for highway process (JTGE42-2005), the method can simultaneously measure the water absorption of natural sand and machine-made sand, a blower is adopted to dry the wet machine-made sand with water poured out so as to enable the wet machine-made sand to reach a saturated surface dry state, and then the wet machine-made sand is filled in a mold and tamped so as to determine the water absorption.
However, there are many disadvantages to measuring the machine-made sand water absorption rate by this method. Firstly, compared with natural sand, the machine-made sand has higher stone powder content and is difficult to stand, and when water is poured into a machine-made sand container tray, the water is difficult to pour out in order to ensure that the stone powder does not run off, so that excessive water is remained in a sample to be air-dried, the drying time of a blower is too long, and the test efficiency is influenced; secondly, the content of the machine-made sandstone powder is high, so that fine powder is easy to lose during air drying, and the test precision is influenced; moreover, the distance between the end face of the tamper and a sample is strictly controlled not to exceed 10mm when the tamper is adopted for free-falling tamping, but the test requirement is difficult to guarantee during manual test, and the test precision is reduced; finally, the method needs manual drying, and the machine-made sand sample is manually filled into a mold, so that the operation is complex and not convenient.
CN201620478495.3 provides a device for measuring the dry water absorption of a saturated surface of machine-made sand, which is characterized in that on the basis of a T0330-2005 method in aggregate test regulations in road processes (JTG E42-2005), a heating mechanism is arranged under a machine-made sand container tray to replace a blower for air drying, but the method has the problems of low efficiency and uneven heating during drying, insufficient test precision, complex operation and the like.
Therefore, a high-efficiency, high-precision and convenient mechanical sand water absorption rate measuring device is needed for experimental research and engineering application.
SUMMERY OF THE UTILITY MODEL
To the problem that present mechanism sand water absorption rate measurement accuracy is low, the utility model provides a mechanism sand water absorption rate survey device realizes the accuracy of mechanism sand water absorption rate, high-efficient measurement.
The utility model discloses a realize through following technical scheme:
a machine-made sand water absorption rate measuring device comprises a box body, wherein a slump cone test mold is arranged in the box body, and a drying device and a tamping device are arranged at the top of the slump cone test mold;
the drying device comprises a stirring device, a pot body and a heating device;
the pot body is unsettled to be set up in the box, and agitating unit's upper portion is fixed on the box, and agitating unit's lower part is stretched into the pot body, is provided with heating device on the pot body for dry to the mechanism sand, the bottom of the pot body is provided with the export, is arranged in making the mechanism sand of drying pour into slump section of thick bamboo examination mould, and the tamping unit is arranged in tamping the mechanism sand to in the slump section of thick bamboo examination mould.
Preferably, the stirring device comprises an electric rotor, a stirring blade and a stirring shaft;
the top of the electric rotor is connected with the top of the box body, the stirring shaft is connected with the rotating shaft of the electric rotor, the stirring blades are arranged on the stirring shaft, and the stirring blades extend into the pot body.
Preferably, the side wall of the pot body is of a hollow sandwich structure, and the heating device is arranged in the sandwich.
Preferably, the bottom center of the pot body is provided with a funnel, and the dried machine-made sand enters the slump cone test mold through the funnel.
Preferably, the tamping device comprises a fixed pulley, a steel wire rope, a tamper and a motor;
the fixed pulley is fixed in the top of box, and wire rope's one end is connected with the output shaft of motor, and the motor is located the outside of box, and the other end of wire rope is walked around the fixed pulley and is connected with the top of tamper.
Preferably, the box body is also internally provided with a laser range finder for measuring the distance between the bottom of the tamper and the surface of the sand sample manufactured in the slump cone test mold.
Preferably, a steel wire rope pipeline is further arranged on the inner wall of the box body, and the end part of the steel wire rope penetrates through the steel wire rope pipeline and bypasses the fixed pulley to be connected with the tamper.
Preferably, the bottom of box still is provided with the drive belt, on the drive belt was placed to slump section of thick bamboo examination mould, the drive belt was used for moving slump section of thick bamboo examination mould to drying device or tamping unit's below.
Preferably, the slump cone test mold is placed on the transmission belt through a machine-made sand tray.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model provides a pair of mechanism sand water absorption survey device, set up drying device in the box, tamping unit and slump section of thick bamboo examination mould, adopt the stirring and dry to mechanism sand with the mode of pot body heating, drying efficiency is greatly improved, and simultaneously, the problem that mountain flour content reduces in the mechanism sand that current hair-dryer air-dries the in-process caused has also been solved, consequently, can effectively guarantee the measurement accuracy of the water absorption rate of mechanism sand, secondly, through the bottom opening at the pot body, make the automatic slump section of thick bamboo examination mould that flows in of mechanism sand after the drying, and adopt tamping unit to tamp the mechanism sand after the drying, the process of manual filling machine system sand has been avoided, measurement efficiency is improved, carry out the tamping through automatic tamping unit at last, the artifical tamping error is reduced, the survey precision is improved.
Further, drive stirring vane through electric rotor and stir the mechanism sand, improved the drying efficiency of mechanism sand, also make the mechanism sand be heated evenly simultaneously.
Furthermore, the heating device is arranged in the interlayer of the pot body, so that the pot body is uniformly heated, and the safety during drying is improved.
Further, the motor is adopted to control the tamper through the steel wire rope to automatically tamp, the structure is simple, the operation error of a tester is reduced, and the measurement accuracy is improved.
Further, measure the distance between the tamping bar bottom surface to the slump section of thick bamboo trial mould system sand sample surface through laser range finder, guarantee that the tamping process accords with the regulation requirement, improve measurement accuracy.
Furthermore, the mechanism sand tray provided with the slump cone test mold is controlled to move through the transmission belt, and the measuring efficiency is further improved.
Drawings
FIG. 1 is a schematic view of the measuring apparatus of the present invention;
fig. 2 is a schematic structural diagram of the drying device of the present invention.
Wherein, 1, a power supply; 2. a box body; 3. a base; 4. a conveyor belt; 5. a control unit; 6. an electric motor; 7. a laser range finder; 8. a fixed pulley; 9. a wire rope; 10. tamping; 11. a wire rope pipeline; 12. a first key; 14. a second key; 15. an entrance and an exit; 16. a machine-made sand tray; 17. testing a mould of the slump cone; 18. a drying device; 19. an electric rotor fixing block; 20. an electric rotor; 21. a stirring blade; 22. a stirring shaft; 23. a pan body; 24. an electric heating wire; 25. a funnel; 26. a funnel switch; 27. a control system; 28. a pot body clamping groove.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings, which are provided for purposes of illustration and not limitation.
Referring to fig. 1 and 2, a machine-made sand water absorption rate measuring apparatus includes a housing 2, a control system 27, and a drying device 18, a slump cone test pattern 17, and a tamping device provided in the housing 2.
Wherein, the front of box 2 is provided with gets the thing mouth, and drying device 18 is located the top of box 2, and slump section of thick bamboo examination mould 17 sets up in the bottom of box 2 to be located drying device 18 under, the tamping unit sets up the top at the box for machine-made sand in the slump section of thick bamboo examination mould 17 is tamped.
The drying device 18 comprises an electric rotor fixing block 19, an electric rotor 20, a stirring blade 21, a stirring shaft 22, a pot body 23, an electric heating wire 24, a funnel 25 and a funnel switch 26.
Wherein, electric rotor 20's upper end is fixed in 2 tops of box through electric rotor fixed block 19, electric rotor 20's control end is connected with control system 27's output, (mixing) shaft 22 upper end is connected with electric rotor 20 lower extreme, electric rotor 20 drive (mixing) shaft 22 rotates, stirring vane 21 is fixed in on (mixing) shaft 22, stirring vane 21 is located the pot body 23, the pot body 23 sets up in box 2 through pot body draw-in groove 28, pot body draw-in groove 28 is fixed at the 2 inner walls of box, be equipped with ohmic heating's heating wire 24 on the pot body 23 lateral wall, the center of the bottom of the pot body 23 is provided with the discharge gate, pot body 23 lower part still is provided with funnel 25, the funnel can communicate with the discharge gate.
The funnel switch 26 is an insertion plate, a horizontal insertion groove is formed in the connection position of the pot body 23 and the funnel, the insertion plate is assembled in the insertion groove, the insertion plate can horizontally move in the insertion groove, and a discharge hole in the bottom of the pot body 23 is closed or opened.
The stirring blades 21 are spirally arranged on the stirring shaft 22 and are used for stirring the machine-made sand of the pot body.
The pot body clamping groove is used for restraining the pot body 23 and ensuring the stability of the pot body, and the pot body 23 can be detached and arranged in the pot body clamping groove 28.
The lateral wall of the pot body 23 is of a hollow sandwich structure, the heating wires 24 are uniformly distributed in the sandwich layer, and the machine-made sand in the pot body 23 is dried by uniformly heating the heating wires.
A slump section of thick bamboo examination mould 17 is the toper structure to for both ends open structure, a slump section of thick bamboo examination mould 17 is placed in mechanism sand shallow tray 16, places the bottom at box 2 through mechanism sand shallow tray 16, and slump section of thick bamboo examination mould 17's entry is just to the export of funnel 25, and the mechanism sand of guaranteeing to dry falls into a slump section of thick bamboo examination mould 17, and mechanism sand shallow tray 16 is used for accepting from not falling into a slump section of thick bamboo examination mould 17 and the mechanism sand that overflows at the tamping in-process, avoids the extravagant and polluted environment of mechanism sand.
The bottom of the box body 2 is provided with a base 3, the base 3 is provided with a conveyor belt 4, the conveyor belt is used for conveying a slump cone test mold 17 filled with machine-made sand to a tamping position, namely, under the tamping device, a machine-made sand tray 16 is positioned on the conveyor belt 4, the slump cone test mold 17 is placed on the machine-made sand tray 16, and the center of the slump cone test mold 17 is aligned with the center of the funnel 25.
The tamping device comprises a fixed pulley 8, a steel wire rope 9, a laser range finder 7, a tamper 10 and a motor 6.
Fixed pulley 8 is fixed in the top of box 2, and wire rope 9's one end is connected with motor 6's output shaft, and the motor is located the outside of box, and wire rope 9's the other end is walked around fixed pulley 8 and is connected with the top of tamper 10, and motor 6's control end is connected with control system 27's output.
The front of the box body 2 is provided with a box body inlet and outlet 15, the inner wall of the box body 2 is also provided with a steel wire rope pipeline 11, and the steel wire rope 9 passes through the steel wire rope pipeline 11 and then bypasses the fixed pulley 8 to be connected with the tamper 10.
Laser range finder 7 sets up at the top of 2 of box for detect the distance between the system sand sample surface in tamper 10 bottom surface and the slump section of thick bamboo examination mould 17, laser range finder 7's output is connected with control system 27's input.
The control system 27 includes a first button 12, a second button 14, a control unit 5 and a power supply 1 for supplying power, wherein the control unit 5 is respectively connected to the first button 12, the second button 14, the electric rotor 20, the heating wire 24, the conveyor belt 4, the motor 6 and the laser range finder 7.
A first button 12 for controlling the operation states of the heating wire 24 and the electric rotor 20; and a second button 14 for controlling the operating state of the conveyor belt.
The following is to the utility model provides a measuring method of mechanism sand water absorption rate survey device carries out detailed explanation, including following step:
1) the entrance 15 is opened, and the wet machine-made sand with the excessive water poured out, which is manufactured by the method T0330-2005 in the road process aggregate test regulation, is poured into the pot body 23.
2) The power supply 1 is switched on, the first key 12 is clicked, the heating wire 24 in the pot body 23 starts to heat, the electric rotor 20 drives the stirring blade 21 to stir the sand, and meanwhile, a technician observes the moisture state of the machine-made sand sample and preliminarily judges whether the machine-made sand sample reaches the saturated surface dry state.
3) When the machine-made sand reaches the saturated surface dry state, clicking the first key 12, stopping working of the electric heating wire 24 and the electric rotor 20, moving the inserting plate to open the discharge port of the pot body, enabling the dried machine-made sand to flow to the slump cone test mold 17 through the funnel 25, and closing the funnel switch 26 when the machine-made sand is filled in the slump cone test mold 17.
4) Clicking the second key 14, automatically moving the machine-made sand tray 16 with the slump cone test mold 17 to one side of the center of the tamper 10 by the conveyor belt 4 until the center of the slump cone test mold 17 is positioned below the center of the tamper 10, and measuring the distance from the bottom surface of the tamper 10 to the sample by the laser range finder 7, wherein the distance is smaller than 10mm and can be realized by adjusting the length of the steel wire rope 9; and finally, starting the motor 6 to enable the tamper 10 to freely fall to tamp the machine-made sand.
The tamper 10 is combined with the laser range finder 7 to realize free falling body high-precision tamping which meets the requirements of a method T0330-2005 in the road process aggregate test regulations and has the distance between the end face of the tamper 10 and a sample of not more than 10 mm.
5) And taking out the machine-made sand tray 16 with the slump cone test mould 17 through an inlet and an outlet, and operating according to a method T0330-2005 in the highway process aggregate test regulation to judge whether the machine-made sand sample reaches a saturated surface dry state.
6) And if the machine-made sand reaches a saturated surface dry state, measuring the water absorption of the machine-made sand according to a method T0330-2005 in the highway process aggregate test regulation. And if the saturated surface dry state is not reached, pouring the taken out machine-made sand in the slump cone test mold 17 and the machine-made sand tray 16 into the pot body 23, and repeating the steps 2-5 until the saturated surface dry state is reached.
Mechanism sand water absorption rate survey device when using, at first, realize the heating to the mechanism sand through drying device's heating wire, drive stirring vane by electric rotor simultaneously and realize stirring in real time for mechanism sand heating is even, drying device's setting is guaranteed that the mechanism sand is dried rapidly and uniformly to the dry state of saturation face, has eliminated the condition appearance that fine powder scatters and disappears this influence test precision simultaneously.
Secondly, the machine-made sand is dried to a saturated surface dry state and then is automatically loaded into the slump cone test mold through the funnel, compared with the traditional method of manually dumping and loading the mold, the process realizes that the machine-made sand automatically and quickly loads the slump cone test mold, and the test efficiency is improved;
then, the machine-made sand tray placed with the slump cone test mold moves towards one side of the center of the tamper until the center of the slump cone test mold is located at the position below the center of the tamper, tamping is automatically carried out according to the tamping requirement specified by the standard by combining a laser range finder, manual tamping errors in the existing method are eliminated when the tamper is automatically tamped in the process, and the test precision is improved.
The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.
Claims (9)
1. A machine-made sand water absorption rate measuring device is characterized by comprising a box body (2), wherein a slump cone test mold (17) is arranged in the box body, and a drying device (18) and a tamping device are arranged at the top of the slump cone test mold (17);
the drying device (18) comprises a stirring device, a pot body (23) and a heating device;
the utility model discloses a collapse section of thick bamboo examination mould, including pot body (23), agitating unit, pot body (23) unsettled setting is in the box, and agitating unit's upper portion is fixed on the box, and agitating unit's lower part stretches into in the pot body (23), is provided with heating device on the pot body (23) for dry to the mechanism sand, the bottom of the pot body (23) is provided with the export, is arranged in making the mechanism sand of drying pour into collapse section of thick bamboo examination mould (17), and the tamping unit is arranged in carrying out the tamping to the mechanism sand in collapse section of thick bamboo examination mould (17).
2. A machine-made sand water absorption measuring device according to claim 1, wherein said stirring means comprises an electric rotor (20), a stirring blade (21) and a stirring shaft (22);
the top of the electric rotor (20) is connected with the top of the box body, the stirring shaft (22) is connected with the rotating shaft of the electric rotor, the stirring blades (21) are arranged on the stirring shaft (22), and the stirring blades extend into the pot body (23).
3. A machine-made sand water absorption measuring device according to claim 1, characterized in that the side wall of the pan body (23) is a hollow sandwich structure, and the heating device is arranged in the sandwich.
4. The machine-made sand water absorption measuring device according to claim 1, wherein a funnel is arranged at the center of the bottom of the pot body, and dried machine-made sand enters the slump cone test mold (17) through the funnel.
5. A machine-made sand water absorption rate measuring device according to claim 1, wherein said tamping device comprises a fixed pulley (8), a wire rope (9), a tamper (10) and a motor (6);
the fixed pulley (8) is fixed on the top of the box body (2), one end of the steel wire rope (9) is connected with an output shaft of the motor (6), the motor is located on the outer side of the box body, and the other end of the steel wire rope (9) is connected with the top of the tamper (10) by bypassing the fixed pulley (8).
6. A machine-made sand water absorption measuring device according to claim 5, characterized in that a laser distance meter (7) is further arranged in the box body and used for measuring the distance between the bottom of the tamper (10) and the surface of the machine-made sand sample in the slump cone test die (17).
7. A machine-made sand water absorption measuring device according to claim 5, characterized in that a steel wire rope pipeline (11) is further arranged on the inner wall of the box body (2), and the end part of the steel wire rope (9) passes through the steel wire rope pipeline (11) and bypasses the fixed pulley (8) to be connected with the tamper (10).
8. The machine-made sand water absorption rate measuring device according to claim 1, characterized in that a transmission belt (4) is further arranged at the bottom of the box body (2), the slump cone test mold (17) is placed on the transmission belt, and the transmission belt (4) is used for moving the slump cone test mold (17) to the lower part of the drying device (18) or the tamping device.
9. A machine-made sand water absorption measuring device according to claim 8, wherein said slump cone test pattern (17) is placed on the belt by a machine-made sand tray (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922425553.2U CN211504909U (en) | 2019-12-28 | 2019-12-28 | Mechanism sand water absorption rate survey device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922425553.2U CN211504909U (en) | 2019-12-28 | 2019-12-28 | Mechanism sand water absorption rate survey device |
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| Publication Number | Publication Date |
|---|---|
| CN211504909U true CN211504909U (en) | 2020-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922425553.2U Expired - Fee Related CN211504909U (en) | 2019-12-28 | 2019-12-28 | Mechanism sand water absorption rate survey device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211504909U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021129184A1 (en) * | 2019-12-28 | 2021-07-01 | 长安大学 | Manufactured sand water absorption rate measuring device and method |
-
2019
- 2019-12-28 CN CN201922425553.2U patent/CN211504909U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021129184A1 (en) * | 2019-12-28 | 2021-07-01 | 长安大学 | Manufactured sand water absorption rate measuring device and method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200915 Termination date: 20211228 |
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| CF01 | Termination of patent right due to non-payment of annual fee |