CN221320565U

CN221320565U - Aggregate mixing proportion determining device

Info

Publication number: CN221320565U
Application number: CN202323156825.6U
Authority: CN
Inventors: 龙小林; 尹建伟; 安兴华; 王自入; 王益鸣
Original assignee: Guizhou Transportation Planning Survey and Design Academe Co Ltd
Current assignee: Guizhou Transportation Planning Survey and Design Academe Co Ltd
Priority date: 2023-11-22
Filing date: 2023-11-22
Publication date: 2024-07-12
Anticipated expiration: 2033-11-22

Abstract

The utility model discloses a device for determining aggregate mixing proportion, which comprises a fixed base, wherein a transmission device is arranged on the fixed base, a fixed frame is arranged at the transmission end of the transmission device, a plurality of layers of screen grid units which are mutually stacked are arranged on the fixed frame, and the screen mesh specification of the screen grid units is gradually reduced from top to bottom; the utility model is suitable for determining the aggregate gradation of asphalt mixtures with different mixing ratios, and can effectively realize the accurate determination of the mixing ratio of aggregates or recycled aggregates used for pavement paving by using screens with different specifications and arranging functional partitions on the screens.

Description

Aggregate mixing proportion determining device

Technical Field

The utility model belongs to the technical field of highway instruments, and particularly relates to an aggregate mixing ratio determining device.

Background

The asphalt mixture is a composite material, mainly composed of asphalt, coarse aggregate, fine aggregate and mineral powder, and is formed by mixing raw materials with different mass and quantity, and has different mechanical properties. Asphalt mixtures are a generic term for mixtures obtained by mixing mineral aggregates with asphalt binders. The mineral aggregate is classified into dense-graded, semi-open-graded and open-graded mixtures according to the size of the void fraction. The mineral grade in the asphalt mixture has an important influence on the road performance and durability of the asphalt mixture. Along with the extension of the service cycle of the high-grade highway in China, a part of pavement has certain diseases, and major and middle repair is needed to improve the performance of the asphalt pavement. And the recycling of the old asphalt pavement material has important significance for recycling the asphalt pavement material.

The old asphalt pavement material needs to determine the grading of the aggregates in the old asphalt pavement material in the recycling process, and then new materials are added and mixed to generate new asphalt mixture for paving an asphalt pavement, however, due to the fact that a certain asphalt film exists on the surface of the recycled aggregates of the asphalt pavement material, the problems of inaccurate passing rate, low screening efficiency and the like in the screening process by adopting the existing vibrating screening equipment can occur, particularly the screening grids of the existing screening equipment are basically integrally arranged, functional partitions are lacking in the screening grids, the limiting effect of the screening grids on the aggregates is weakened, the accuracy of aggregate screening efficiency and grading determination is reduced, and the inaccurate grading of the aggregates is caused, so that the service life of the reclaimed asphalt mixture is influenced due to unstable road performance. Based on the method, the aggregate mix proportion determining device is of great significance to the grading determination of the old asphalt pavement materials.

Disclosure of Invention

In view of this, the object of the present utility model is: the utility model provides a simple structure, screening pass rate accuracy height, screening efficiency height's aggregate mix proportion determining device that the vibration mode is adopted to screening to current screening equipment can appear that the rate of passage is inaccurate, screening efficiency is too low, and the screening check is whole setting basically, lacks functional partition in the screen cloth, has weakened the restriction effect that the screen cloth sieved the aggregate, has reduced the problem of aggregate screening efficiency and grading determination accuracy.

The technical scheme of the utility model is as follows:

The utility model provides a device is confirmed to mix ratio that gathers materials, includes unable adjustment base, is equipped with transmission on unable adjustment base, is equipped with the mount on transmission drive end, is equipped with the screen grid unit that a plurality of layers stack each other together on the mount, and the screen mesh specification of screen grid unit diminishes from top to bottom gradually.

Further, the screen grid units of each layer are mutually stacked together through the screen grid connecting fixing pieces and are mutually connected through the fixing center shafts penetrating through the center positions of the screen grid units of each layer; the bottom end of the lowest layer of screen lattice unit is provided with a transmission shaft fixing piece, the upper end of the transmission shaft fixing piece is connected with a fixed center shaft, and the lower end of the transmission shaft fixing piece is provided with a connecting fixing head with a rotating shaft, so that the screen lattice unit is rotationally connected with the transmission end of the transmission device through the rotating shaft.

Further, the grid units are at least nine layers, and are a top grid with the specification of 19.2mm, a second grid with the specification of 9.5mm, a third grid with the specification of 4.75mm, a fourth grid with the specification of 2.36mm, a fifth grid with the specification of 1.18mm, a sixth grid with the specification of 0.6mm, a seventh grid with the specification of 0.3mm, an eighth grid with the specification of 0.15mm and a ninth grid with the specification of 0.075mm in sequence from top to bottom.

Further, the second screen grids to the eighth screen grids are respectively internally provided with an inner screen partition board which is used for separating the screening space and is connected with the fixed center shaft, the inner screen partition boards are at least four in the second screen grids, and the inner screen partition boards are gradually increased along with the reduction of the screen grid unit specifications.

Further, each screen cell unit is gradually reduced in radial direction, so that the whole screen cell unit is in an inverted circular truncated cone structure.

Further, the fixing frame comprises lateral fixing rods symmetrically arranged at two sides of the screen grid unit, and the bottoms of the lateral fixing rods are connected with the transmission end of the transmission device through straight rods; the screen grid units are arranged between the lateral fixing rods and are connected with the lateral fixing rods through the buckling structures.

Further, the snap structures are provided in multiple pieces, and the multiple pieces of the provided snap structures are arranged in multiple layers along the stacking direction of the screen cells.

Further, the plurality of the buckle structures are arranged outside each layer of the screen grid units or are arranged outside each layer of the screen grid units at intervals; and the fastening structures outside the same layer of screen lattice units are at least two annular and uniformly distributed.

Further, the buckle structure comprises fixed buckles arranged on opposite sides of the two lateral fixed rods; lateral fixing buckles matched with the fixing buckles are arranged on two sides of the screen grid units, and the lateral fixing buckles are connected with the screen grid units through connecting rods.

Further, the transmission device comprises a motor box, a power output head is sleeved on the transmission end of the motor box, and a connector connected with the rotating shaft is arranged on the power output head.

Compared with the prior art, the utility model has the beneficial effects that:

The utility model is suitable for determining the aggregate grading of asphalt mixtures with different mix ratios. Traditional screening machine adopts vibration mode to implement aggregate screening, and the inside screening space of sieve check is whole setting basically simultaneously, lacks the functional subregion, has weakened the restriction effect that the sieve check sieved to aggregate, and then has reduced the accuracy that aggregate screening efficiency and grading were confirmed, carries out the baffle function subregion after, mainly has following advantage:

(1) Aggregate is treated in regions, so that the blocking of sieve holes caused by accumulation is reduced;

(2) The collision times of the aggregate and the container wall in the screening process are improved, and the screening efficiency is improved;

(3) The aggregate quality in each partition is reduced, and the screening efficiency and the screening precision are higher.

The utility model eliminates the problems of inaccurate aggregate screening result, error in net content on part of the screen and the like of the traditional screening device, and can effectively realize accurate determination of the mixing ratio of aggregates or recycled aggregates used for pavement paving; meanwhile, the device has the advantages of simple application method, lower production cost and good popularization and application values.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.

Drawings

FIG. 1 is a side view of the combination of the screens of the present utility model;

FIG. 2 is a top view of a first screen of the present utility model;

FIG. 3 is a top view of a second screen of the present utility model;

FIG. 4 is a top view of a third screen of the present utility model;

FIG. 5 is a top view of a fourth screen of the present utility model;

FIG. 6 is a top view of a fifth screen of the present utility model;

FIG. 7 is a top view of a sixth screen of the present utility model;

FIG. 8 is a top view of a seventh screen of the present utility model;

FIG. 9 is a top view of an eighth screen of the present utility model;

FIG. 10 is a top view of a ninth screen of the present utility model;

FIG. 11 is a side view of a top screen of the present utility model;

FIG. 12 is a side view of a second screen of the present utility model;

FIG. 13 is a side view of a third screen of the present utility model;

FIG. 14 is a side view of a ninth screen of the present utility model;

FIG. 15 is a side view of the lower power take-off and securing device of the present utility model;

FIG. 16 is a side view showing the overall construction of the aggregate mix proportion determining apparatus of the present utility model.

The meaning of each reference numeral in the figures is: 1. top screen grid; 2. a second screen; 3. a third screen; 4. a fourth screen; 5. a fifth screen; 6. a sixth screen; 7. a seventh screen; 8. an eighth sieve lattice; 9. a ninth screen; 10. a connecting rod; 11. a lateral fixing buckle; 12. a drive shaft mount; 13. connecting a fixed head; 14. a transmission shaft; 15. the screen lattice is connected with the fixing piece; 16. a ceramic inner liner; 17. a screen; 18. fixing a center shaft; 19. a screen inner partition; 20. a fixing buckle; 21. a lateral fixing rod; 22. a connector; 23. a power output head; 24. a motor case; 25. and (5) fixing the base.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 16, the aggregate mix proportion determining device disclosed by the utility model comprises a top screen 1 with a screen mesh size specification of 19.2mm, a second screen 2 with a screen mesh size specification of 9.5mm, a third screen 3 with a screen mesh size of 4.75mm, a fourth screen 4 with a screen mesh size of 2.36mm, a fifth screen 5 with a screen mesh size of 1.18mm, a sixth screen 6 with a screen mesh size of 0.6mm, a seventh screen 7 with a screen mesh size of 0.3mm, an eighth screen 8 with a screen mesh size of 0.15mm, a ninth screen mesh 9 with a screen mesh size of 0.075mm, a connecting rod 10, a lateral fixing buckle 11, a transmission shaft fixing piece 12, a connecting fixing head 13, a transmission shaft 14, a screen mesh connecting fixing piece 15, a ceramic lining layer 16, a screen mesh 17, a fixing center shaft 18, an inner screen partition 19, a fixing buckle 20, a lateral fixing rod 21, a connector 22, a power output head 23, a motor box 24 and a fixing base 25. The mesh size specification of the screen is set according to the grain size classification of the asphalt mixture aggregate.

The screening system device is composed of the screening grid units, the connecting rods 10, the lateral fixing buckles 11, the transmission shaft fixing pieces 12, the connecting fixing heads 13, the transmission shafts 14, the screening grid connecting fixing pieces 15, the ceramic lining layers 16, the screen mesh 17, the fixing center shafts 18 and the screen inner partition plates 19, the screening grid units are connected end to end through the screening grid connecting fixing devices 15 to form a combined screening grid, the transmission devices composed of the transmission shaft fixing pieces 12, the connecting fixing heads 13 and the transmission shafts 14 are connected with a bottom power system (the connecting heads 22, the power output heads 23 and the motor box 24), and meanwhile the combined screening grid is connected and fixed with the lateral fixing rods 21 through the lateral fixing buckles 11 and the fixing buckles 20, so that the overall stability of the combined screening grid in the rotary screening process is guaranteed.

As shown in fig. 2-10, each screen cell unit is mainly formed by combining a steel screen cell, a ceramic lining layer 16, a screen 17, a fixed center shaft 18, an inner screen partition plate 19 and the like, wherein the second screen cell 2 to the eighth screen cell 8 are respectively internally provided with the inner screen partition plate 19 which is used for separating a screening space and is connected with the fixed center shaft 18, the inner screen partition plates 19 are at least four in the second screen cell 2, the number of the inner screen partition plates 19 is gradually increased in a one-to-one mode along with the reduction of the screen specification, and the number of the inner screen partition plates 19 is gradually increased along with the reduction of the grain size of the screen mesh 17, so that the screening passing rate and accuracy of small-grain aggregates are mainly enhanced, and the screening efficiency and accuracy are higher by reducing the aggregate quality in each partition.

This mix proportion of gathering materials determining device is fixed in indoor ground according to unable adjustment base 25, guarantee the stability of device operation period, the motor setting that has connector 22, power output head 23 is on unable adjustment base 25, be connected with each sieve check unit through the transmission shaft 14 rotation on connector 22, form the combination sieve check through sieve check connection fixing device 15 end to end between each sieve check unit, each sieve check unit radially reduces gradually, make its whole be the structure of falling round platform, radial reduction can reduce the retarding force and the support of screening container wall to gathering materials, more be favorable to gathering materials to get into lower part sieve check through the sieve. The two sides of the screen grid unit are also provided with lateral fixing rods 21, the overall shape of the lateral fixing rods 21 is matched with that of the screen grid unit, and one side, close to the screen grid unit, of the lateral fixing rods 21 is provided with a fixing buckle 20 for clamping a connecting member; the connecting member comprises lateral fixing buckles 11 which are symmetrically connected to two sides of the screen grid unit and are matched with the fixing buckles 20 in connection position, and the lateral fixing buckles 11 are connected with the screen grid unit through connecting rods 10; the bottom of the lateral fixing rod 21 is connected with the transmission end of the transmission device through a straight rod.

The connecting rod 10 and the lateral fixing buckle 11 are mainly arranged on two sides of the second screen grid 2, the fifth screen grid 5 and the eighth screen grid 8, and are mainly used for integrally fixing screen grid units. The connecting rod 10 is a solid stainless steel pipe, is connected with the screen grid in a welded mode, is fixedly connected with the lateral fixing buckle 11, and the lateral fixing buckle 11 is a steel fixing buckle and is fixedly connected with the lateral fixing rod 21 through the fixing buckle 20, so that the stability of the combined screen grid in the rotary screening process is achieved.

The transmission shaft fixing piece 12 is of a steel columnar structure, is connected with the ninth sieve lattice 9 with the thickness of 0.075mm in an anchoring manner, and is connected and fixed with the connection fixing head 13 and the transmission shaft 14 by bolts.

The connecting and fixing head 13 is a steel cylindrical gasket, and is integrally anchored and fixed with the transmission shaft fixing piece 12 and the transmission shaft 14.

The transmission shaft 14 is a steel shaft, is integrally anchored and fixed with the transmission shaft fixing piece 12 and the connecting and fixing head 13, is connected with the ninth screen grid 9 and is used for transmitting motor power to the screen grid units.

The screen grid connecting fixing pieces 15 are positioned at the upper end and the lower end of the screen grids and used for fixing and connecting the screen grids.

The ceramic lining layer 16 is a lining layer inside the screen, is bonded and fixed with the inner wall of the screen through an epoxy resin binder, and is placed with fine aggregate to be adhered to the inner wall of the screen.

The screen 17 is a steel or nylon cloth screen, a 9.5mm specification screen is a steel screen, and other aggregate specification screens are nylon cloth screens.

The fixed center shaft 18 is a steel inner column and is used for fixing the inner baffle plate 19 of the screen and keeping the stability between the upper screen lattice and the lower screen lattice.

The inner screen separator 19 is a steel sheet, and divides the screen lattice into a plurality of independent areas with the screen lattice unit and the fixed center shaft 18, so that the screening efficiency of aggregate and the accuracy of results can be improved.

The fixing buckle 20 is a steel buckle and consists of a screw and a fixing buckle, and is fixedly connected with the lateral fixing rod 21 through the lateral fixing buckle 11, so that the stability of the combined screen lattice in the rotary screening process is achieved.

The lateral fixing rod 21 is a solid steel rod and is connected with the fixing buckle 20 and the lateral fixing buckle 11, so that the stability of the combined screen lattice in the rotary screening process is ensured.

The connector 22 is a steel columnar connecting device, is fixedly connected with the fixed rod 21 through a bolt, is connected with the transmission shaft 14, and provides rotary power for the upper combined screen.

The power output head 23 is a columnar device which is concave in steel and provided with threads, and is connected with the motor box 24 and the connector 22.

The motor box 24 is an alternating current speed regulating motor and is connected with the power output head 23 to provide power for screen grid rotation.

The fixing base 25 is a steel device with fixing holes at two ends, and is used for grounding and fixing the motor case 24.

The specific embodiment is as follows: assembling a top screen 1 with the diameter of 19.2mm, a second screen 2 with the diameter of 9.5mm, a third screen 3 with the diameter of 4.75mm, a fourth screen 4 with the diameter of 2.36mm, a fifth screen 5 with the diameter of 1.18mm, a sixth screen 6 with the diameter of 0.6mm, a seventh screen 7 with the diameter of 0.3mm, an eighth screen 8 with the diameter of 0.15mm and a ninth screen 9 with the diameter of 0.075mm in an up-down head-to-head joint mode, and combining the combined screens for later use; connecting and fixing the transmission shaft 14 at the bottom of the combined screen lattice with the connector 22; the lateral fixing buckles 11 on the left side and the right side of the combined screen grid are connected with the fixing buckles 20 and are fixed on the lateral fixing rods 21 by bolts, and the bottom and the side surfaces of the combined screen grid are fixed with a bottom power device; before starting the motor, ensuring that the bottom fixing base 25 is grounded with the bottom surface, pouring aggregate to be tested into the top screen grid 1 after the inspection is finished, starting the motor, starting the combined screen grid to rotate for screening under the drive of the bottom motor, and closing the motor after the inspection is finished; after the motor is turned off, the combined screen grids are disassembled, aggregate weighing is carried out in a layered mode, and grading composition of the aggregate can be determined.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model.

Claims

1. Aggregate mix ratio determining device, including unable adjustment base (25), its characterized in that: the fixed base (25) is provided with a transmission device, the transmission end of the transmission device is provided with a fixed frame, the fixed frame is provided with a plurality of layers of screen grid units (17) which are mutually stacked together, and the screen mesh specification of the screen grid units (17) is gradually reduced from top to bottom.

2. The aggregate mix proportion determination device of claim 1, wherein: the screen grid units (17) are mutually stacked together through screen grid connecting fixing pieces (15) and are mutually connected through a fixing center shaft (18) penetrating through the center positions of the screen grid units (17); the bottom end of the lowest layer of screen lattice unit is provided with a transmission shaft fixing piece (12), the upper end of the transmission shaft fixing piece (12) is connected with a fixed center shaft (18), and the lower end of the transmission shaft fixing piece is provided with a connecting fixing head (13) with a rotating shaft (14), so that the screen lattice unit is rotationally connected with the transmission end of the transmission device through the rotating shaft (14).

3. The aggregate mix proportion determination device of claim 2, wherein: the screen grid units (17) are at least nine layers, and are sequentially a top screen grid (1) with the specification of 19.2mm, a second screen grid (2) with the specification of 9.5mm, a third screen grid (3) with the specification of 4.75mm, a fourth screen grid (4) with the specification of 2.36mm, a fifth screen grid (5) with the specification of 1.18mm, a sixth screen grid (6) with the specification of 0.6mm, a seventh screen grid (7) with the specification of 0.3mm, an eighth screen grid (8) with the specification of 0.15mm and a ninth screen grid (9) with the specification of 0.075mm from top to bottom.

4. An aggregate mix proportion determining device as claimed in claim 3, characterized in that: and the second screen grids (2) to eighth screen grids (8) are internally provided with screen inner partition plates (19) which are used for separating screening spaces and are connected with a fixed center shaft (18), the screen inner partition plates (19) are at least four in the second screen grids (2), and the screen inner partition plates (19) are gradually increased along with the reduction of the screen grid unit specifications.

5. The aggregate mix proportion determining device according to any one of claims 1 to 4, characterized in that: the screen grid units are gradually reduced in radial direction, so that the whole screen grid units are in an inverted truncated cone structure.

6. The aggregate mix proportion determination device of claim 1, wherein: the fixing frame comprises lateral fixing rods (21) symmetrically arranged at two sides of the screen grid unit (17), and the bottoms of the lateral fixing rods (21) are connected with the transmission end of the transmission device through straight rods; the screen grid units (17) are arranged between the lateral fixing rods (21) and are connected with the lateral fixing rods (21) through a buckling structure.

7. The aggregate mix proportion determination device of claim 6, wherein: the buckle structure is provided in a plurality of pieces, and the buckle structure provided in the plurality of pieces is provided with a plurality of layers along the stacking direction of the screen grid units (17).

8. The aggregate mix proportion determination device of claim 7, wherein: the plurality of the buckle structures are arranged outside each layer of the screen grid units (17), or are arranged outside each layer of the screen grid units (17) at intervals; and the fastening structures outside the same layer of screen lattice units are at least two annular and uniformly distributed.

9. The aggregate mix proportion determination device of claim 8, wherein: the clamping structure comprises fixing clamps (20) arranged on opposite sides of the two lateral fixing rods (21); lateral fixing buckles (11) matched with the fixing buckles (20) are arranged on two sides of the screen grid unit (17), and the lateral fixing buckles (11) are connected with the screen grid unit (17) through connecting rods (10).

10. The aggregate mix proportion determination device of claim 2, wherein: the transmission device comprises a motor box (24), a power output head (23) is sleeved on the transmission end of the motor box (24), and a connector (22) connected with the rotating shaft (14) is arranged on the power output head (23).