Asphalt mixture separation rate detection mechanism

Abstract

The utility model relates to an asphalt mixture separation rate detection mechanism which comprises an installation shell internally provided with a filter screen in an embedded mode, the front end and the rear end of the lower side of the installation shell are each provided with a driving mechanism, and each driving mechanism comprises a left axial supporting shaft and a right axial supporting shaft. The side end of the supporting shaft is in key connection with a driving block of which the vertical layer projection is of a rhombic structure, so that the upper end face of the driving block is restrained to abut against the lower end face of the mounting shell, and the driving block can drive the mounting shell to move upwards in the rotating process; the projection of the supporting shaft on the horizontal layer is further restrained not to coincide with the projection of the mounting shell on the horizontal layer, so that the filter screen can do intermittent up-and-down linear motion in cooperation with the downward pressure applied to the filter screen by the mixture in the actual use process, and the separated asphalt particles and stone particles are separated from the mixture in an oscillation mode; a residue at the upper end of the filter screen is an undamaged mixture of asphalt and stone grains.

Description

Technical Field

[0001] The utility model relates to the technical field of detection mechanisms, in particular to an asphalt mixture separation rate detection mechanism. Background Art

[0002] When asphalt pavement is renovated or maintained, the original pavement will be removed, resulting in a large amount of waste asphalt mixed recycled material (RAP). Reusing old materials is an important method for the sustainable development of existing road traffic.

[0003] At present, the separation of asphalt and stone particles is mainly achieved by crushing and grinding waste asphalt mixed recycling materials. In practice, the elasticity of solid asphalt is used to crush and grind waste asphalt mixed recycling materials into the form of asphalt particles and stone particles, and then the asphalt particles and stone particles are separated by screening.

[0004] The existing technical devices are generally large-scale processing, that is, batch crushing, grinding and then unified screening. This makes it impossible for users to intuitively judge the separation of waste asphalt mixed recycled materials when purchasing related equipment. Users must visit the entire production process and then roughly judge the separation rate of waste asphalt recycled materials.

[0005] Therefore, we believe that there is a need for a detection device that can complete the screening process of crushed mixture in a miniaturized manner, so that users can intuitively judge the separation rate of waste asphalt mixed recycled materials by related crushing and grinding equipment. Summary of the invention

[0006] In view of the deficiencies in the prior art, the utility model proposes an asphalt mixture separation rate detection mechanism, which has the advantage of being easy for users to intuitively judge the separation rate of related equipment for waste asphalt mixture recycling materials, and solves the shortcomings of the prior art devices that lack related equipment, require users to fully visit the production process, and can only roughly obtain relevant results.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A mechanism for detecting an asphalt mixture separation rate comprises a mounting shell, a filter screen is embedded in the mounting shell, and driving mechanisms are respectively arranged on the front and rear sides of the mounting shell, each of the driving mechanisms comprises a support seat, a left and right axial support shaft is rotatably connected to the support seat, a driving block with a diamond-shaped structure projected on the vertical plane is keyed to the support shaft, the upper end face of each driving block abuts against the lower end face of the mounting shell, and the projection of the support shaft on the horizontal plane does not overlap with the projection of the mounting shell on the horizontal plane, and a driving motor is fixedly connected to the upper end of each support seat, and the output shaft of the driving motor is connected to the corresponding support shaft through a transmission gear set.

[0009] Preferably, a mounting plate is provided at the lower end of the mounting shell, and the lower end surfaces of the two support seats are fixedly connected to the mounting plate. A plurality of limit rods are provided in a rectangular array at the upper end of the mounting plate, and a through hole is opened on the mounting shell for the limit rod, and the limit rod is inserted into the through hole.

[0010] Preferably, each of the limit rods is sleeved with an upper and lower axial compression spring on the outside, and the two axial ends of the compression spring are respectively abutted against the mounting plate and the mounting shell. When the compression spring is not affected by external force and the drive block is abutted against the lower end surface of the mounting shell, the short axis of the drive block is perpendicular to the horizontal plane.

[0011] Preferably, the installation shell includes a frame I and a frame II which are arranged up and down, the filter screen is arranged between the frame I and the frame II, and the frame I and the frame II are fixedly connected by bolts.

[0012] Preferably, each of the driving mechanisms comprises two driving blocks arranged on the left and right, and the two driving blocks are symmetrically arranged with the center line of the mounting housing as the symmetry line.

[0013] Preferably, the transmission gear set comprises two bevel gears in meshing transmission connection, wherein a bevel gear is keyed to each end face of the support shaft and each end face of the output shaft of the drive motor.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model constrains the upper end face of the driving block to abut against the lower end face of the mounting shell, and combines the characteristic that the projection of the support shaft on the horizontal plane does not overlap with the projection of the mounting shell on the horizontal plane, so that the mounting shell can be intermittently pushed upward during the continuous rotation of the driving block, and in combination with the downward pressure exerted by the mixture on the filter screen during actual use, the filter screen can intermittently move up and down linearly, thereby separating the asphalt particles and stone particles from the mixture after separation in the form of vibration. At this time, the residue on the upper end of the filter screen is the undamaged mixture of asphalt and stone particles. Compared with the prior art device, the installation shell in this device has a longer movement stroke and a faster movement reversal speed (i.e., the mixture and the filter screen are separated by vibration). It is more targeted to the mixture and can screen out the unbroken asphalt and stone mixture more quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the driving mechanism of the utility model;

[0018] Figure 3 This is a schematic diagram of the installation of the housing and the filter screen of the utility model.

[0019] In the figure: 1. Mounting shell; 101. Frame I; 102. Frame II; 103. Through hole; 104. Bolt; 2. Filter; 3. Driving mechanism; 301. Driving block; 302. Support shaft; 303. Support seat; 304. Driving motor; 305. Transmission gear set; 4. Limit rod; 5. Mounting plate; 6. Compression spring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0022] Please refer to Figures 1 - 3 , an asphalt mixture separation rate detection mechanism, including a mounting shell 1 for fixing a filter screen 2.

[0023] It should be noted that the device uses the vibrating filter 2 and utilizes the different diameters of asphalt fragments, stone particles and raw materials in the separation material, so that the asphalt fragments and stone particles with smaller diameters in the vibrated mixture can fall under the filter 2, while the particles with larger diameters remain above the filter 2. Therefore, by comparing the amount of raw materials remaining above the filter 2 with the amount of mixture poured onto the filter 2, the degree of separation of asphalt fragments and stone particles in the raw materials by the corresponding crushing device can be obtained.

[0024] Specifically, in order to adapt to different stone particle diameters, that is, in practice, the stone particle diameters used are different depending on the application scenarios, and the diameters of the smallest units (that is, the material when a single stone particle is wrapped with asphalt on the outer layer is regarded as the smallest unit at this time) after simple crushing (that is, the product obtained after the base is crushed by a breaker or a jackhammer or other equipment in practice) are different. Therefore, the filter screen 2 needs to be replaced according to actual needs.

[0025] Specifically, in order to realize the disassembly and replacement of the filter 2, the device sets the installation shell 1 as an upper and lower two-section structure. The installation shell 1 includes a frame I101 and a frame II102 from top to bottom, and the filter 2 is set between the frame I101 and the frame II102.

[0026] At the same time, corresponding mounting holes are opened through frame I 101 and frame II 102. By inserting bolts 104 into the mounting holes, frame I 101 and frame II 102 can be fixed with bolts 104. At this time, the filter screen 2 placed between frame I 101 and frame II 102 is kept stable by the upper and lower clamping forces.

[0027] As shown in the figure, the filter net 2 used in the present device is composed of a plurality of strips woven from rigid materials, each strip protrudes from the corresponding areas of frame Ⅰ101 and frame Ⅱ102, and the part of each strip protruding from the area of ​​frame Ⅰ101 and frame Ⅱ102 is completed in a hook-shaped structure, which can further fix the filter net 2 and ensure that the filter net 2 will not be deformed due to the impact of the mixture during actual use.

[0028] Specifically, in order to achieve vibration of the filter screen 2 , the device is provided with a driving mechanism 3 at the front and rear ends of the lower side of the mounting shell 1 , respectively, and the driving mechanism 3 is used to control the up and down movement of the filter screen 2 .

[0029] Furthermore, in order to control the movement trajectory of the mounting shell 1, the device is provided with a mounting plate 5 at the lower end of the mounting shell 1, the driving mechanism 3 is fixedly connected to the mounting plate 5, and a plurality of limit rods 4 are provided in a rectangular array at the upper end of the mounting plate 5.

[0030] At the same time, a through hole 103 is formed on the installation shell 1 for the limiting rod 4 to penetrate through. When the limiting rod 4 is inserted into the through hole 103 , the installation shell 1 can be controlled to move only in an up and down straight line, thereby constraining the movement trajectory of the installation shell 1 .

[0031] Specifically, the driving mechanism 3 includes a support base 303 , and the support base 303 is fixedly connected to the mounting plate 5 .

[0032] The upper end of each support seat 303 is rotatably connected to a left-right axial support shaft 302 via a bearing, and the side end of the support shaft 302 is key-connected to a driving block 301 having a diamond-shaped structure in vertical plane projection.

[0033] By constraining the upper end face of the driving block 301 to abut against the lower end face of the mounting shell 1, and the projection of the support shaft 302 on the horizontal plane does not overlap with the projection of the mounting shell 1 on the horizontal plane, the driving block 301 is not in abutment with the mounting shell 1 all the time during the process of the driving block 301 driven by the support shaft 302 to rotate. At this time, the mounting shell 1 can be intermittently subjected to an upward driving force by rotating the driving block 301, that is, under the action of the intermittent driving force and the downward pressure exerted by the mixture on the filter screen 2, the filter screen 2 continuously makes an up and down linear motion.

[0034] At the same time, a driving motor 304 is fixedly connected to the upper end of the support seat 303 of the device, and the output shaft of the driving motor 304 is transmission-connected to the supporting shaft 302 through a transmission gear set 305 .

[0035] Specifically, each transmission gear set 305 includes two bevel gears in meshing transmission connection, wherein a bevel gear is keyed to a side end surface of each support shaft 302 and a side end surface of an output shaft of each drive motor 304 .

[0036] Furthermore, the device is provided with a compression spring 6 on the outer sleeve of the limit rod 4, and the two axial ends of the compression spring 6 are respectively in contact with the mounting housing 1 and the mounting plate 5. Therefore, the mounting housing 1 can have a larger range of motion through the compression spring 6, and by utilizing the gravity of the mixture itself and combining the properties of the compression spring 6, after the driving block 301 cancels the thrust on the mounting housing 1, the compression spring 6 releases the accumulated elastic potential energy to make the mounting housing 1 fluctuate continuously up and down, that is, at this time, the mounting housing 1 makes a fast but small-amplitude up and down linear motion.

[0037] It should be noted that by using the driving block 301 to push the mounting shell 1 up and down, the mounting shell 1 can make a slow but large-scale up and down linear motion. After the driving block 301 cancels the upward thrust on the mounting shell 1, the mounting shell 1 makes a fast but small-scale up and down linear motion. These two different movement modes can effectively change the position of each component of the mixture, that is, the components with smaller particle size (asphalt particles, stone particles) can move to the bottom of the mixture more quickly and then be filtered to the bottom of the filter screen 2.

[0038] Therefore, the device constrains that when the compression spring 6 is not affected by external force and the driving block 301 abuts against the lower end surface of the mounting shell 1, the short axis of the driving block 301 is perpendicular to the horizontal plane, so that the mounting shell 1 has a larger movement amplitude under the push of the driving block 301. The larger the initial movement amplitude of the mounting shell 1, the greater the elastic potential energy accumulated by the subsequent compression spring 6, and the longer the duration of the rapid but small-amplitude up and down linear movement of the mounting shell 1.

[0039] It should be emphasized that the device uses the driving block 301 to provide an upward driving force for the installation shell 1, and uses the gravity of the mixture itself to make the installation shell 1 have a tendency to move downward. Therefore, in order to avoid an imbalance in the force on the front and rear sides of the installation shell 1, the device constrains the output shafts of the two driving motors 304 to rotate in completely opposite directions, that is, as shown in the figure, the driving block 301 relatively forward rotates counterclockwise, and the driving block 301 relatively backward rotates clockwise.

[0040] It should be noted that the device does not restrict the driving blocks 301 in the two driving mechanisms 3 to abut against the lower end surface of the mounting shell 1 at the same time, which enables the intermittent slow but large-amplitude movement frequency of the mounting shell 1 to be flexibly adjusted according to demand.

[0041] Furthermore, in order to increase the contact area between the driving mechanism 3 and the mounting shell 1 and further avoid unbalanced force on the mounting shell 1, the device constrains each driving mechanism 3 to include two driving blocks 301 arranged on the left and right, and the two driving blocks 301 are symmetrically arranged with the center line of the mounting shell 1 as the symmetry line.

[0042] In actual use, the utility model:

[0043] First, two drive motors 304 are turned on, and the two drive motors 304 are connected in series as much as possible as needed, so that the motion states of the multiple drive blocks 301 can always be under the expected detection;

[0044] Afterwards, the output shaft of the driving motor 304 cooperates with the transmission gear set 305 to drive the support shaft 302 to rotate. At this time, the front driving block 301 rotates counterclockwise, and the rear driving block 301 rotates clockwise;

[0045] Then, the driving block 301 abuts against the lower end surface of the mounting housing 1 as it rotates. At this time, the mounting housing 1 is pushed upward by the driving block 301.

[0046] Afterwards, as the driving block 301 continues to rotate, the driving block 301 separates from the mounting housing 1, and the mounting housing 1 moves downward under the influence of gravity. At this time, the single slow but large-scale up and down linear movement of the mounting housing 1 ends;

[0047] Finally, the installation housing 1 presses down to impact the compression spring 6, and the compression spring 6 accumulates elastic potential energy. During the process of the compression spring 6 releasing the elastic potential energy, the installation housing 1 performs a fast but small-amplitude linear motion.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An asphalt mixture separation rate detection mechanism, characterized in that: It comprises a mounting shell (1), a filter screen (2) is embedded in the mounting shell (1), and driving mechanisms (3) are respectively arranged on the front and rear sides of the mounting shell (1); Each of the driving mechanisms (3) comprises a support seat (303), a left-right axial support shaft (302) being rotatably connected to the support seat (303), and a driving block (301) having a diamond-shaped structure projected on a vertical plane being key-connected to the support shaft (302); The upper end surface of each driving block (301) abuts against the lower end surface of the mounting shell (1), and the projection of the support shaft (302) on the horizontal plane does not overlap with the projection of the mounting shell (1) on the horizontal plane; A driving motor (304) is fixedly connected to the upper end of each supporting seat (303), and the output shaft of the driving motor (304) is transmission-connected to the corresponding supporting shaft (302) via a transmission gear set (305).

2. The asphalt mixture separation rate detection mechanism according to claim 1, characterized in that: The lower end of the installation shell (1) is provided with a mounting plate (5), and the lower end surfaces of the two support seats (303) are fixedly connected to the mounting plate (5); A plurality of limiting rods (4) are arranged in a rectangular array on the upper end of the mounting plate (5), and a through hole (103) is provided on the mounting shell (1) for the limiting rods (4), and the limiting rods (4) are inserted into the through hole (103).

3. The asphalt mixture separation rate detection mechanism according to claim 2, characterized in that: Each of the limit rods (4) is sleeved with an upper and lower axial compression spring (6) on its outer side, and the two axial ends of the compression spring (6) are respectively in contact with the mounting plate (5) and the mounting housing (1); When the compression spring (6) is not affected by external force and the driving block (301) is in contact with the lower end surface of the mounting housing (1), the short axis of the driving block (301) is perpendicular to the horizontal plane.

4. The asphalt mixture separation rate detection mechanism according to claim 1, characterized in that: The installation shell (1) comprises a frame I (101) and a frame II (102) which are arranged upper and lower, and the filter screen (2) is arranged between the frame I (101) and the frame II (102), and the frame I (101) and the frame II (102) are fixedly connected by bolts (104).

5. The asphalt mixture separation rate detection mechanism according to claim 1, characterized in that: Each of the driving mechanisms (3) comprises two driving blocks (301) arranged on the left and right, and the two driving blocks (301) are symmetrically arranged with the center line of the mounting housing (1) as the symmetry line.

6. The asphalt mixture separation rate detection mechanism according to claim 1, characterized in that: The transmission gear set (305) comprises two bevel gears in meshing transmission connection, wherein a bevel gear is key-connected to the side end surface of each support shaft (302) and the side end surface of the output shaft of each drive motor (304).

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