Automatic screening device for mix proportion design of pavement mixture

Abstract

The utility model discloses a pavement mixture mix proportion design automatic screening device which comprises a machine box, the machine box is externally connected with a power supply, a control panel is arranged in front of the machine box, one side of the upper surface of the machine box is an integral screening area, and the other side of the upper surface of the machine box is a step-by-step screening area. Wherein a groove is formed in the upper surface of the case in the overall screening area, a vibration chassis is arranged above the groove, a vibration motor is fixed to the lower surface of the vibration chassis, a plurality of sleeves are arranged at the peripheral edge of the vibration chassis at equal intervals in a surrounding mode, and limiting rods are inserted into the sleeves downwards; the limiting rod is limited through a locking nut on the side face of the sleeve. The automatic screening device is mainly used for screening the mixture in the design process of the mix proportion of the asphalt pavement mixture, traditional manual screening can be replaced, the labor intensity of workers is reduced, the working efficiency and quality of screening are improved, and the measurement accuracy is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of asphalt pavement mixture screening components, and more specifically to an automatic screening device for pavement mixture proportion design. Background Art

[0002] With the development of society, people's requirements for high-grade road service level are getting higher and higher. Drainage and noise reduction asphalt pavement has good drainage function, which can reduce water mist and water drift caused by driving on rainy days, improve the road's anti-skid ability, and has the function of noise reduction, which can significantly reduce the noise interference of driving to residents along the road, and significantly improve the road service level.

[0003] At present, TPS high-viscosity asphalt is mainly used in China. It has high viscosity and can better meet the requirements of drainage and noise reduction roads for high and low temperature performance, water stability and durability of the mixture. The mix ratio design of asphalt mixture is particularly important during the construction process, which is directly related to the drainage and noise reduction effect of the road surface. When the mix ratio of existing highway asphalt pavement and cement-stabilized crushed stone base mixture is designed in the laboratory, it is necessary to screen the mixture to determine the particle grading and coarseness of the mixture, which is usually done manually. For asphalt pavement, multiple square hole sieves with sieve holes of 0.15mm, 0.3mm, 0.6mm, 1.18mm, 2.36mm, 4.75mm, etc. are usually used for screening. After the overall screening of the set sieve is completed, the residual mixture on the single square hole sieve needs to be further screened. Therefore, the screening speed of the whole process is slow and the efficiency is low. There are many human factors, and automatic screening cannot be achieved, resulting in low measurement efficiency and low accuracy. Utility Model Content

[0004] The purpose of the utility model is to provide an automatic screening device for pavement mixture mix ratio design. The automatic screening device is mainly used for screening mixtures in the process of asphalt pavement mixture mix ratio design. It can replace traditional manual screening, reduce manual labor intensity, improve screening work efficiency and quality, and ensure measurement accuracy.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A road mixture mix ratio design automatic screening device comprises a chassis, the chassis is externally connected to a power supply, the chassis is provided with a control panel in front, one side of the upper surface of the chassis is an overall screening area and the other side is a step-by-step screening area, wherein the upper surface of the chassis in the overall screening area is provided with a groove, a vibration chassis is provided above the groove, a vibration motor is fixed to the lower surface of the vibration chassis, a plurality of sleeves are equidistantly arranged around the edge positions around the vibration chassis, a limiting rod is inserted downward into the inside of the sleeve, the limiting rod is limited by a locking nut on the side of the sleeve, the upper ends of the limiting rods are connected to a top cover plate, a plurality of square hole sieves are vertically and neatly arranged between the top cover plate and the upper surface of the vibration chassis, a bottom box is provided at the bottom of the plurality of square hole sieves, and a plurality of vibration spring seats are equidistantly arranged around the edge positions around the lower surface of the vibration chassis.

[0007] As a further optimization of this solution, the height of the sleeve does not exceed the height of the bottom box, the upper end of the vibration spring seat is fixed to the lower surface of the vibration chassis and the lower end is fixed to the upper surface of the chassis.

[0008] As a further optimization of this scheme, the step-by-step screening area includes a support arranged on the upper surface of the chassis, a limit plate is fixed on the upper end of the support, a plurality of limit columns are equidistantly arranged around the edge positions of the upper surface of the limit plate, a square hole sieve is placed in the inner area of ​​the limit columns, a funnel with a radius decreasing from top to bottom is provided directly above the limit plate, both sides of the funnel are fixed to the upper surface of the chassis by L-shaped connecting rods, another square hole sieve is fixed above the funnel by a splint, both sides of the splint are connected together by concave connecting rods, wherein the outer side of the splint on the rear side is connected to the vibration plate, a vibration motor is provided at the center position of the rear side of the vibration plate, and vibration spring seats are connected backward at the four corner positions of the rear side of the vibration plate, the rear end of the vibration spring seat is connected to the vertical bracket plate, and the bottom of the vertical bracket plate is fixed to the upper surface of the chassis by bolts.

[0009] As a further optimization of this solution, an arc-shaped slot is provided on the inner side of the splint, and the shape of the arc-shaped slot is the same as the edge shape of the square hole screen, so that the square hole screen can be aligned and mounted inside the arc-shaped slot, and the maximum radius of the funnel at the top is greater than the radius of the square hole screen and the minimum radius at the bottom is less than the radius of the square hole screen.

[0010] As a further optimization of this solution, the vibration motors are all connected to the control panel of the chassis through lines.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] The utility model realizes the overall vibration and step-by-step vibration operation of a plurality of square hole sieves respectively by setting an overall screening area and a step-by-step screening area, wherein in the overall screening area, after being clamped by a vibrating chassis and a top cover plate, all the square hole sieves stacked vertically are vibrated as a whole, and in the step-by-step screening area, upper and lower square hole sieves can be fixed respectively, and vibration screening operations are performed on all the square hole sieves step by step in sequence, which can replace traditional manual screening, reduce manual labor intensity, improve screening work efficiency and quality, and ensure the accuracy of measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the automatic screening device of the utility model (when performing overall vibration);

[0014] Figure 2 This is a schematic diagram of the disassembled structure of the automatic screening device of the utility model (when vibrating step by step);

[0015] Figure 3 This is a schematic diagram of the vertical bracket plate connection structure of the utility model;

[0016] In the figure: 1. chassis; 2. groove; 3. support; 4. vibration spring seat; 5. vibration chassis; 6. limit plate; 7. sleeve; 8. locking nut; 9. limit rod; 10. top cover; 11. square hole screen; 12. vibration motor; 13. limit column; 14. clamp; 15. concave connecting rod; 16. vibration plate; 17. vertical bracket plate; 18. L-shaped connecting rod; 19. funnel. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the utility model easy to understand, the utility model is further explained below with reference to specific diagrams.

[0018] In order to solve the existing manual operation of the entire process of slow screening speed, low efficiency, many human factors, unable to achieve automated screening, resulting in low measurement efficiency and low accuracy, such as Figure 1As shown, the present application includes a chassis 1, the chassis 1 is externally connected to a power supply, a control panel is provided in front of the chassis 1, one side of the upper surface of the chassis 1 is an overall screening area and the other side is a step-by-step screening area, wherein a groove 2 is provided on the upper surface of the chassis 1 in the overall screening area, a vibration chassis 5 is provided above the groove 2, a vibration motor 12 is fixed to the lower surface of the vibration chassis 5, a plurality of sleeves 7 are equidistantly arranged around the edge positions around the vibration chassis 5, a limiting rod 9 is inserted downward inside the sleeve 7, the limiting rod 9 is limited by a locking nut 8 on the side of the sleeve, the upper ends of the limiting rods 9 are connected to the top cover plate 10, a plurality of square hole sieves 11 are vertically and neatly arranged between the top cover plate 10 and the upper surface of the vibration chassis 5, wherein a bottom box is provided at the bottom of the plurality of square hole sieves 11, a plurality of vibration spring seats 4 are equidistantly arranged around the edge positions around the lower surface of the vibration chassis 5, the height of the sleeve 7 does not exceed the height of the bottom box, the upper end of the vibration spring seat 4 is fixed to the lower surface of the vibration chassis 5 and the lower end is fixed to the upper surface of the chassis 1;

[0019] Specifically, when performing overall vibration screening, the asphalt pavement mixture after cleaning and drying is weighed and poured into the topmost square hole sieve 11 (the square hole sieve 11 can adopt sieve holes of 0.15mm, 0.3mm, 0.6mm, 1.18mm, 2.36mm, and 4.75mm in size), and all the square hole sieves 11 and the bottom box are neatly placed vertically on the vibration chassis 5, and the bottom box is limited on all sides by the sleeves 7 on all sides, and the top cover 10 is covered so that the limiting rod 9 is inserted into the sleeve 7 and fixed by the locking nut 8, and then the vibration motor 12 is started through the control panel to drive all the square hole sieves 11 on the vibration chassis 5 to vibrate as a whole for about 10 minutes, and then the vibration motor 12 is stopped to end the overall vibration link.

[0020] like Figure 2 and Figure 3As shown, the step-by-step screening area of ​​the present application includes a support 3 arranged on the upper surface of the chassis 1, a limit plate 6 is fixed on the upper end of the support 3, a plurality of limit columns are arranged around the edge of the upper surface of the limit plate 6 at equal intervals, a square hole screen 11 is placed in the inner area of ​​the limit column, a funnel 19 with a radius decreasing from top to bottom is arranged just above the limit plate 6, both sides of the funnel 19 are fixed to the upper surface of the chassis 1 through an L-shaped connecting rod 18, another square hole screen 11 is fixed above the funnel 19 through a clamping plate 14, and both sides of the clamping plate 14 are connected together through a concave connecting rod 15, wherein the outer side of the clamping plate 14 located at the rear side is The side surface is connected to the vibration plate 16, a vibration motor 12 is provided at the center position of the rear side surface of the vibration plate 16, and the vibration spring seat 4 is connected to the rear at the four corner positions of the rear side surface of the vibration plate 16, the rear end of the vibration spring seat 14 is connected to the vertical bracket plate 17, the bottom of the vertical bracket plate 17 is fixed to the upper surface of the chassis 1 by bolts, and an arc-shaped card slot is provided on the inner side surface of the clamping plate 14, and the shape of the arc-shaped card slot is the same as the edge shape of the square hole screen 11, so that the square hole screen 11 is aligned and mounted inside the arc-shaped card slot, and the maximum radius of the top of the funnel 19 is greater than the radius of the square hole screen 11 and the minimum radius at the bottom is less than the radius of the square hole screen 11;

[0021] Specifically, when performing step-by-step vibration screening, first remove the top square hole sieve 11 and place it between the clamps 14, then take the lower square hole sieve 11, place it in the middle area of ​​the limit plate 6 and limit it through the limit column, start the vibration motor 12 through the control panel, drive the vibration plate 16 to vibrate, and then drive the upper square hole sieve 11 to vibrate, so that the residual mixture passes through the funnel 19 and falls into the lower square hole sieve 11. After the end, stop the vibration motor 12, replace the next square hole sieve 11 one by one, and so on, perform vibration screening on all the lower square hole sieves 11 one by one, and finally weigh the mass of the mixture inside each square hole sieve 11, and calculate and determine the particle gradation and coarseness of the mixture.

[0022] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0023] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An automatic screening device for designing the mix ratio of road mixture, comprising a chassis, the chassis is externally connected to a power supply, and a control panel is provided in front of the chassis, characterized in that: One side of the upper surface of the chassis is an overall screening area and the other side is a step-by-step screening area, wherein a groove is opened on the upper surface of the chassis of the overall screening area, a vibration chassis is provided above the groove, a vibration motor is fixed to the lower surface of the vibration chassis, a number of sleeves are equidistantly arranged around the edge positions around the vibration chassis, limit rods are inserted downward into the sleeves, the limit rods are limited by locking nuts on the sides of the sleeves, the upper ends of the limit rods are connected to the top cover plate, a number of square hole screens are neatly arranged vertically between the top cover plate and the upper surface of the vibration chassis, a bottom box is provided at the bottom of the several square hole screens, and a number of vibration spring seats are equidistantly arranged around the edge positions around the lower surface of the vibration chassis.

2. The automatic screening device for road mixture mix design according to claim 1, characterized in that: The height of the sleeve does not exceed the height of the bottom box, the upper end of the vibration spring seat is fixed to the lower surface of the vibration chassis and the lower end is fixed to the upper surface of the chassis.

3. The automatic screening device for road mixture mix design according to claim 2 is characterized by: The step-by-step screening area includes a support arranged on the upper surface of the chassis, a limit plate is fixed on the upper end of the support, a plurality of limit columns are equidistantly arranged around the edge positions of the upper surface of the limit plate, a square hole sieve is placed in the inner area of ​​the limit columns, a funnel with a radius decreasing from top to bottom is arranged directly above the limit plate, both sides of the funnel are fixed to the upper surface of the chassis by L-shaped connecting rods, another square hole sieve is fixed above the funnel by a clamping plate, both sides of the clamping plate are connected together by concave connecting rods, wherein the outer side of the clamping plate on the rear side is connected to the vibration plate, a vibration motor is provided at the center position of the rear side of the vibration plate, and vibration spring seats are connected backward at the four corner positions of the rear side of the vibration plate, the rear end of the vibration spring seat is connected to the vertical bracket plate, and the bottom of the vertical bracket plate is fixed to the upper surface of the chassis by bolts.

4. The automatic screening device for road mixture mix design according to claim 3 is characterized by: An arc-shaped slot is provided on the inner side of the clamping plate, and the shape of the arc-shaped slot is the same as the edge shape of the square hole screen, so that the square hole screen can be aligned and mounted inside the arc-shaped slot. The maximum radius of the top of the funnel is greater than the radius of the square hole screen, and the minimum radius at the bottom is less than the radius of the square hole screen.

5. The automatic screening device for road mixture mix design according to claim 4 is characterized by: The vibration motors are all connected to the control panel of the chassis through lines.

Images