An aggregate screening device and method for on-site use in a road asphalt mixture mixing plant

Abstract

The present invention discloses an aggregate screening device and method for on-site use in a road asphalt mixture mixing plant, belonging to the technical field of highway instruments, including: a driving base, three threaded holes are opened at the top edge of the driving base, three vertical rods are threadedly connected in the three threaded holes, the center of the top of the driving base is fixed with an inclined block, a rotating tray is arranged on the top of the inclined block, the bottom of the rotating tray is in transmission connection with the driving base, a nested sieve is arranged on the top of the rotating tray, a fixed pressing plate is arranged above the nested sieve, and the fixed pressing plate is slidably installed on the three vertical rods. The present invention adopts coaxial rotation screening and is accompanied by up and down displacement, with higher screening efficiency, small volume and convenient to carry, and can be moved as needed. Compared with manual screening, it is more time-saving and labor-saving, can screen the aggregate more fully, can accurately provide the weight of the aggregate on each sieve of the nested sieve, and plays a crucial role in verifying the production mix ratio.

Description

Technical Field

[0001] The invention belongs to the technical field of highway instruments, and particularly relates to an aggregate screening device and method for on-site use in a road asphalt mixture mixing plant. Background Art

[0002] For the asphalt mixture surface layer of pavement construction, first, the mix design is carried out in the laboratory. Aggregates and asphalt transported by the construction unit are tested for asphalt mixtures to determine a mix ratio suitable for local climate conditions and construction conditions. Further, equipment debugging before construction is carried out, and the production mix ratio is provided for the construction unit to debug the asphalt mixing plant machine.

[0003] Due to the uneven sampling, during this period, it is necessary to screen the aggregates in the construction site bunker and verify the screened hot materials after heating in the asphalt mixing building.

[0004] The traditional method is to manually screen the cold and hot materials in each bunker, which not only wastes time, but also consumes the physical strength of workers, and the manual screening error is large. Therefore, there is an urgent need for an aggregate screening device that saves time and effort and has accurate data to solve the problems in the background art. Summary of the Invention

[0005] The purpose of the present invention is to provide an aggregate screening device and method for on-site use in a road asphalt mixture mixing plant to solve the deficiencies in the prior art.

[0006] To achieve the above invention purpose, the technical solution adopted by the present invention is as follows:

[0007] An aggregate screening device for on-site use in a road asphalt mixture mixing plant includes: a driving base. Three threaded holes are opened at the top edge of the driving base, and vertical rods are threadedly connected in all three threaded holes. A diagonal block is fixed at the center of the top of the driving base. A rotating tray is arranged on the top of the diagonal block. The bottom of the rotating tray is in transmission connection with the driving base. A nested sieve is arranged on the top of the rotating tray, and a fixed pressing plate is arranged above the nested sieve. The fixed pressing plate is slidably installed on the three vertical rods.

[0008] Preferably, the driving base includes: a housing. A brushless motor is installed inside the housing. The output end of the brushless motor penetrates through the top of the housing and is fixedly connected with a gear.

[0009] Preferably, a detachable power supply, a handle and a control switch are installed on the outer side wall of the housing. The control switch is electrically connected with the brushless motor, and the detachable power supply provides power for the brushless motor.

[0010] Preferably, the rotating tray includes: a disc, a cylinder and a column. The cylinder is fixed at the center of the bottom of the disc, and the column is fixed at the edge of the bottom of the disc.

[0011] Preferably, a tooth groove is formed at the bottom end of the cylinder, and the tooth groove is adapted to the gear.

[0012] Preferably, the inclined block is annular, and is provided with a plurality of slope segments, and the plurality of slope segments are connected end to end to form a closed loop.

[0013] Preferably, the number of the slope segments is the same as the number of the columns.

[0014] Preferably, a three-way lock is provided on the fixed pressure plate, and the three-way lock is used to limit the height of the fixed pressure plate.

[0015] An aggregate screening method for on-site use in a road asphalt mixture mixing plant, using the aggregate screening device for on-site use in a road asphalt mixture mixing plant according to any one of the above, includes the following steps:

[0016] S1: After installing the device, take out the nested sieve and take materials according to requirements.

[0017] S2: According to the aggregate size of the bunker, select the nested sieve with the required aperture, and pour the aggregate into the nested sieve after taking the material by the quartering method.

[0018] S3: Place the nested sieve on the rotating tray, and place the fixed pressure plate on the top of the nested sieve. Rotate the rotating tray to the highest point of the slope segment of the inclined block, and screw the three-way lock to fix the nested sieve.

[0019] S4: Start the control switch and reasonably adjust the speed of the brushless motor according to the aggregates in different bunkers.

[0020] S5: After screening, count the weights of the aggregates on each sieve of the nested sieve.

[0021] The aggregate screening device and method for on-site use in a road asphalt mixture mixing plant provided by the present invention have the following advantages compared with the prior art:

[0022] The present invention adopts coaxial rotation screening and is accompanied by up and down displacement, with higher screening efficiency, small volume and easy to carry. It can be operated and left immediately. Compared with manual screening, it is more time-saving and labor-saving, can screen the aggregates more fully, can accurately provide the weights of the aggregates on each sieve of the nested sieve, and plays a crucial role in verifying the production mix ratio. Description of the Drawings

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings.

[0024] Figure 1 Schematic diagram of the overall structure of the present invention;

[0025] Figure 2 Schematic diagram of the structure of the present invention after removing the sleeve sieve;

[0026] Figure 3 Schematic diagram of the drive base of the present invention;

[0027] Figure 4 Cross-sectional view of the drive base of the present invention;

[0028] Figure 5 Schematic diagram of the rotating tray of the present invention;

[0029] Figure 6 Schematic diagram of the inclined block of the present invention;

[0030] Figure 7 Schematic diagram of the sleeve sieve of the present invention.

[0031] In the figure: 1 - drive base, 11 - housing, 12 - brushless motor, 13 - gear, 14 - detachable power supply, 15 - handle, 16 - control switch, 2 - threaded hole, 3 - vertical rod, 4 - inclined block, 5 - rotating tray, 51 - disc, 52 - cylinder, 53 - column, 54 - tooth groove, 6 - sleeve sieve, 7 - fixed pressure plate, 8 - slope section, 9 - three-way lock. Detailed implementation manners

[0032] The following will further illustrate the technical solutions of the present invention in conjunction with the drawings and embodiments:

[0033] Refer to Figures 1-7 As shown, the present invention provides an aggregate screening device for on-site use in a road asphalt mixture mixing plant, including: a drive base 1. Three threaded holes 2 are opened at the top edge of the drive base 1, and vertical rods 3 are threadedly connected in all three threaded holes 2. A slanting block 4 is fixed at the center of the top of the drive base 1. A rotating tray 5 is arranged on the top of the slanting block 4. The bottom of the rotating tray 5 is in transmission connection with the drive base 1. A sleeve sieve 6 is arranged on the top of the rotating tray 5. A fixed pressure plate 7 is arranged above the sleeve sieve 6. The fixed pressure plate 7 is slidably installed on the three vertical rods 3. Preferably, a cover is provided at the topmost part of the sleeve sieve 6; the diameter of the rotating tray 5 is 300 mm.

[0034] As a preferred embodiment, the driving base 1 includes: a housing 11, a brushless motor 12 is installed inside the housing 11, and the output end of the brushless motor 12 penetrates through the top of the housing 11 and is fixedly connected to a gear 13. A detachable power supply 14, a handle 15 and a control switch 16 are installed on the outer side wall of the housing 11. The control switch 16 is electrically connected to the brushless motor 12, and the detachable power supply 14 supplies power to the brushless motor 12. The rotating tray 5 includes: a disc 51, a cylinder 52 and a column 53. The cylinder 52 is fixed at the center of the bottom of the disc 51, and the column 53 is fixed at the edge of the bottom of the disc 51. A tooth groove 54 is opened at the bottom end of the cylinder 52, and the tooth groove 54 is adapted to the gear 13. The inclined block 4 is annular, and is provided with a plurality of slope sections 8, and the plurality of slope sections 8 are connected end to end to form a closed loop. Preferably, the depth of the tooth groove 54 > the length of the column 53 > the drop height of the inclined block 4, so as to prevent the tooth groove 54 from disengaging from the gear 13.

[0035] As a preferred embodiment, the number of the slope sections 8 is the same as the number of the columns 53. The columns 53 of the rotating tray 5 climb along the slope sections 8 of the inclined block 4 during rotation, and fall into the next slope section 8 after reaching the highest point, and so on in a cycle, achieving the technical effect of coaxial rotation screening and accompanied by vertical displacement.

[0036] As a preferred embodiment, a three-way lock 9 is provided on the fixed pressure plate 7, and the three-way lock 9 is used to limit the height of the fixed pressure plate 7. Preferably, the fixed pressure plate 7 is used to limit the vertical displacement of the nested sieve 6, and the vertical rod 3 is used to limit the radial displacement of the nested sieve 6.

[0037] A method for screening aggregates on-site in a road asphalt mixture mixing plant, using the aggregate screening device for on-site use in a road asphalt mixture mixing plant described in any one of the above, includes the following steps:

[0038] S1: After placing the device, take out the nested sieve 6 and take materials according to the requirements of "JTG E42-2005 Highway Engineering Aggregate Test Procedures";

[0039] S2: According to the aggregate sizes of the 1#-4# bins, select the nested sieve 6 with the required aperture (the aperture of the nested sieve 6 gradually decreases from top to bottom), and pour the aggregates into the nested sieve 6 after taking materials by the quartering method;

[0040] S3: Place the nested sieve 6 on the rotating tray 5, and place the fixed pressure plate 7 on the top of the nested sieve 6. Rotate the rotating tray 5 to the highest point of the slope section 8 of the inclined block 4, and screw the three-way lock 9 to fix the nested sieve 6;

[0041] S4: Activate the control switch 16 and reasonably adjust the rotation speed of the brushless motor 12 according to the aggregate collection in different bins.

[0042] S5: After screening, count the weights of the aggregates on each sieve of the nested sieve 6.

[0043] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and defined, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0044] It should be noted that in the present application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0045] The above are only the specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An aggregate screening device for on-site use in a road asphalt mixture mixing plant, characterized in that, Comprising: A driving base (1), at the top edge of the driving base (1), three threaded holes (2) are provided, and vertical rods (3) are threadedly connected in all three threaded holes (2). At the center of the top of the driving base (1), an inclined block (4) is fixed. On the top of the inclined block (4), a rotating tray (5) is provided. The bottom of the rotating tray (5) is in transmission connection with the driving base (1). On the top of the rotating tray (5), a nested sieve (6) is provided. Above the nested sieve (6), a fixed pressing plate (7) is provided. The fixed pressing plate (7) is slidably mounted on the three vertical rods (3); On the fixed pressing plate (7), a three-way locking device (9) is provided, and the three-way locking device (9) is used to limit the height of the fixed pressing plate (7); The fixed pressing plate (7) is used to limit the vertical displacement of the nested sieve (6), and the vertical rod (3) is used to limit the radial displacement of the nested sieve (6); The driving base (1) includes: a housing (11), inside the housing (11), a brushless motor (12) is installed. The output end of the brushless motor (12) penetrates through the top of the housing (11) and is fixedly connected to a gear (13); The rotating tray (5) includes: a disc (51), a cylinder (52) and a column (53). The cylinder (52) is fixed at the center of the bottom of the disc (51), and the column (53) is fixed at the bottom edge of the disc (51); At the bottom end of the cylinder (52), a tooth groove (54) is provided, and the tooth groove (54) is adapted to the gear (13).

2. The aggregate screening device for on-site use in a road asphalt mixture mixing plant according to claim 1, characterized in that, On the outer side wall of the housing (11), a detachable power supply (14), a handle (15) and a control switch (16) are installed. The control switch (16) is electrically connected to the brushless motor (12), and the detachable power supply (14) supplies power to the brushless motor (12).

3. An aggregate screening device for on-site use in a road asphalt mixture mixing plant according to claim 1, characterized in that, The inclined block (4) is annular, and is provided with a plurality of slope sections (8), and the plurality of slope sections (8) are connected end to end to form a closed loop.

4. An aggregate screening device for on-site use in a road asphalt mixture mixing plant according to claim 3, characterized in that, The number of the slope sections (8) is the same as the number of the columns (53).

5. A method for screening aggregates on-site in a road asphalt mixture mixing plant, which uses the aggregate screening device for on-site use in a road asphalt mixture mixing plant described in any one of claims 1-4, characterized in that, Including the following steps: S1: After the device is placed, take out the nested sieve (6) and take materials according to requirements; S2: According to the aggregate size of the bunker, select the nested sieve (6) with the required aperture, and pour the aggregate into the nested sieve (6) after taking materials by the quartering method; S3: Place the nested sieve (6) on the rotating tray (5), and place the fixed pressing plate (7) on the top of the nested sieve (6). Rotate the rotating tray (5) to the highest point of the slope section (8) of the inclined block (4), and screw the three-way locking device (9) to fix the nested sieve (6); S4: Start the control switch (16), and reasonably adjust the rotation speed of the brushless motor (12) according to the aggregates in different bunkers; S5: After the screening is completed, count the weights of the aggregates on each sieve of the nested sieve (6).

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