Automatic feeding device for producing tough asphalt for pavement

Abstract

The invention belongs to the technical field of feeding equipment, and particularly relates to an automatic feeding device for pavement tough asphalt production, which comprises a mounting bracket, a screw conveyor, a storage feeding mechanism, a dispersion discharging mechanism, an interval static electricity removal mechanism, a conveying speed regulation and control mechanism, a static electricity removal frequency control mechanism and a PLC (Programmable Logic Controller). The material conveying speed of the spiral conveyor can be automatically regulated and controlled, modifier materials in the material storage shell can be subjected to vibration feeding, feeding smoothness is ensured, static electricity accumulated in the working process of the spiral conveyor can be rapidly guided out in an interval contact mode, and the situation that due to static electricity accumulation, powdery modifier particles attract one another, and the powder modifier particles cannot be damaged is avoided. And moreover, the static electricity removing frequency can be automatically regulated and controlled based on the feeding speed, so that the modifier can be fed more dispersedly, the working power of spiral conveying is directly used as the power of dispersing work, energy is saved, and control is easy.

Description

Technical Field

[0001] The invention belongs to the technical field of feeding equipment, and in particular relates to an automatic feeding device for producing road tough asphalt. Background Art

[0002] Road tough asphalt is a special asphalt material. In materials science, toughness refers to the ability of a material to absorb energy during plastic deformation and fracture. For road asphalt, tough asphalt can withstand repeated loads from vehicles and absorb energy during deformation without easily cracking or being damaged. It is usually made by adding modifiers to ordinary asphalt.

[0003] The automated feeding device for the production of tough asphalt for pavement is a system used to accurately, efficiently and automatically transport various raw materials required for asphalt production (such as base asphalt, polymer modifiers, additives, etc.) to the production equipment. It plays a key role in the entire tough asphalt production process, and can improve production efficiency and ensure the accuracy and stability of feeding.

[0004] Screw conveyors are usually used to transport powdered modifiers. The material is pushed forward by the rotation of the spiral blades. When the powdered modifier is transported in the screw conveyor, friction and collision will occur between the particles and between the particles and the wall of the conveyor. According to the principle of static electricity generation, friction electrification is a common way of generating static electricity. As the conveying speed of the screw conveyor increases, the movement speed of the powdered modifier particles and the frequency of mutual collision will increase, which will indeed lead to the acceleration of static electricity generation. The accumulation of static electricity will cause the powdered modifier particles to attract each other, resulting in agglomeration. These agglomerates will not only affect the uniform transportation of the modifier, but also block the conveying pipeline or screw conveyor, interfering with the production process. In order to ensure the normal production, the grounding wire is often used to remove static electricity. However, the use of the screw conveyor will be accompanied by vibration. If the grounding wire is always in contact with the outer casing of the screw conveyor, the grounding wire is prone to wear and tear and breakage under long-term relative movement, which will affect the reliability of grounding and fail to effectively remove static electricity. In addition, the modifier in the tough asphalt needs to be evenly dispersed in the base asphalt, otherwise it will affect the performance of the asphalt. Tough asphalt requires good tensile strength and deformation resistance to withstand external forces such as vehicle loads. If the modifier cannot be evenly dispersed, when it is stretched or compressed, the local area will have an uneven stress distribution due to excessive or low modifier content. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic feeding device for producing pavement tough asphalt in view of the above problems.

[0006] To achieve the above object, the present invention adopts the following technical scheme: an automatic feeding device for producing pavement tough asphalt, including a mounting bracket, and also including: A screw conveyor is fixedly mounted on the upper end of the mounting bracket; A material storage and feeding mechanism is fixedly installed at the feeding port of the screw conveyor; A dispersing unloading mechanism is fixedly mounted at the discharge port of the screw conveyor and is drivingly connected to the screw conveyor; An interval static electricity removal mechanism is fixedly mounted on the mounting bracket and the screw conveyor; A conveying speed regulating mechanism is fixedly mounted on the upper end of the mounting bracket and is electrically connected to the screw conveyor; A static electricity removal frequency control mechanism is installed in the conveying speed control mechanism; The PLC controller is fixedly mounted on the upper end of the mounting bracket and is electrically connected to the screw conveyor, the material storage and feeding mechanism, the dispersed material feeding mechanism, the interval static electricity removal mechanism, the conveying speed regulating mechanism and the static electricity removal frequency control mechanism.

[0007] In the above-mentioned automated feeding device for producing tough asphalt for pavement, the material storage and feeding mechanism includes a storage shell fixedly installed at the feed port of the screw conveyor, an anti-slip frame is fixedly installed on the upper side of the inner wall of the storage shell, and an electric vibration rod is installed in the anti-slip frame.

[0008] In the above-mentioned automatic feeding device for producing tough asphalt for pavement, the dispersed feeding mechanism includes a feeding barrel fixedly connected to the bottom discharge port of the screw conveyor, and the bottom two opposite sides of the feeding barrel are fixedly connected to a plurality of limit sliding rods arranged side by side, and the same connecting plate is slidably sleeved outside the plurality of limit sliding rods on the same side, and a plurality of return springs sleeved outside the limit sliding rods are fixedly connected between the connecting plate and the feeding barrel, and the lower ends of the two connecting plates are fixedly connected to the same dispersion shell, and the bottom of the inner wall of the dispersion shell is detachably fixedly connected by bolts. There is a dispersion mesh plate, the upper end of the dispersion shell and the lower end of the discharge barrel are fixedly connected with an elastic folding rubber sleeve, the outer wall of the discharge barrel is also fixedly connected with a cross plate, a linkage shaft is rotatably sleeved on the cross plate, the lower end of the linkage shaft is fixedly connected with a cam located on one side of the connecting plate, the upper end of the cross plate is also fixedly provided with a bearing seat, the inner wall of the bearing seat is rotatably sleeved with a transmission shaft through a ball bearing, one end of the transmission shaft is transmission-connected to the upper end of the linkage shaft through a bevel gear assembly, and the other end of the transmission shaft is transmission-connected to the rotating end of the screw conveyor through a sprocket assembly.

[0009] In the above-mentioned automated feeding device for the production of tough asphalt for pavement, the interval static electricity removal mechanism includes an L-shaped vertical plate fixedly installed on the rear side of the upper end of the mounting bracket, and the horizontal part of the L-shaped vertical plate is symmetrically fixed with two electric push rods, and the lower movable ends of the two electric push rods are fixedly connected to the same lifting plate, and a plurality of conductive blocks are evenly fixedly installed on the lower end of the lifting plate, and a grounding wire is fixedly connected to the upper side of the conductive block, and a plurality of collector blocks corresponding to the positions of the conductive blocks are embedded at the upper end of the screw conveyor, and an elastic compensation mechanism is installed between the electric push rod and the lifting plate.

[0010] In the above-mentioned automated feeding device for producing tough asphalt for pavement, the conveying speed control mechanism includes a control shell, the inner wall of the control shell is rotatably connected to a control screw, the outer wall of the control shell is fixedly provided with a control motor for driving the control screw to rotate, the rod wall of the control screw is threadedly sleeved with a control seat, the inner wall of the control shell is also fixedly provided with a feedback resistor rod arranged parallel to the control screw, the side wall of the control seat is provided with a sleeve hole sleeved outside the feedback resistor rod, and the inner wall of the corresponding sleeve hole is fixedly connected with a feedback conductive contact electrically in contact with the feedback resistor rod, the upper end of the control seat is fixedly connected with a pointer, the upper end of the pointer passes through the upper end of the control shell through a strip opening provided at the upper end of the control shell, and the upper end of the control shell is also fixedly provided with a stirring speed scale plate arranged corresponding to the position of the pointer.

[0011] In the above-mentioned automated feeding device for the production of tough asphalt for pavement, the static electricity removal frequency control mechanism includes a reciprocating screw rotatably connected to the inner wall of a regulating shell, the reciprocating screw is arranged in parallel with the regulating screw, and the outer wall of the regulating shell is fixedly provided with a forward and reverse motor for driving the reciprocating screw to rotate, the rod wall of the reciprocating screw is threadedly sleeved with a trigger plate, and the lower end side wall of the regulating seat is fixedly provided with a trigger switch arranged opposite to the trigger plate.

[0012] In the above-mentioned automatic feeding device for the production of tough asphalt for pavement, the elastic compensation mechanism includes a fixed frame fixedly connected to the moving end of the electric push rod, and the upper end of the lifting plate is symmetrically fixedly connected with a plurality of pushing rods arranged corresponding to the position of the fixed frame, and the upper ends of the pushing rods pass through the bottom of the fixed frame, and the lower end of the fixed frame and the upper end of the lifting plate are fixedly connected with a plurality of pushing springs mounted outside the pushing rods.

[0013] In the above-mentioned automatic feeding device for producing tough asphalt for pavement, the lower end of the trigger plate is fixedly connected to a limiting slider, and the bottom of the inner wall of the regulating shell is provided with a limiting groove that matches and slides with the limiting slider.

[0014] Compared with the prior art, the present invention has the following beneficial effects: Through the set conveying speed control mechanism, screw conveyor, and storage feeding mechanism, the conveying speed of the screw conveyor can be automatically controlled, and can be adjusted based on the value of the stirring speed to ensure that the modifier can be evenly distributed in the asphalt, and avoid the situation where the conveying speed is relatively slow when the stirring speed is fast, which will cause the modifier to be subjected to excessive shear force and affect its performance; when the stirring speed is slow, the conveying speed is relatively fast, which will cause the modifier to pile up in the asphalt before it can be fully mixed. The modifier material in the storage shell can be vibrated and fed to ensure smooth feeding, avoid blockage at the feeding position and thus affect stable feeding, and can automatically control the vibration intensity at the feeding point based on the feeding speed of the screw conveyor. The faster the feeding speed, the more powder modifier is conveyed per unit time, and the vibration intensity is automatically increased to achieve better feeding.

[0015] By setting up the interval static electricity removal mechanism, static electricity removal frequency control mechanism and elastic compensation mechanism, the static electricity accumulated during the operation of the screw conveyor can be quickly discharged in an interval contact manner, so as to avoid the accumulation of static electricity which will cause the powdered modifier particles to attract each other and cause agglomeration. These agglomerates will not only affect the uniform delivery of the modifier, but also block the delivery pipeline or the screw conveyor, interfering with the normal production. In addition, the grounding wire is always connected to the screw conveyor, which will cause the vibration of the screw conveyor to affect the installation stability of the grounding wire. The quality of static electricity removal is ensured, and the frequency of static electricity removal can be automatically adjusted based on the feeding speed. The faster the feeding speed, the higher the static electricity removal frequency. As the conveying speed of the screw conveyor increases, the movement speed and the frequency of mutual collision of the powdered modifier particles will increase, which will cause the speed of static electricity generation to accelerate, because more friction and collision provide conditions for the generation of static electricity. Correspondingly, increasing the static electricity removal frequency can ensure the timeliness of static electricity elimination.

[0016] By setting up a dispersed feeding mechanism and a screw conveyor, the modifier can be fed in a more dispersed manner, so that the modifier can be more evenly mixed with the base asphalt, thereby improving the uniformity of the distribution of the modifier, making the stress distribution of the tough asphalt more uniform, and improving the crack resistance of the asphalt pavement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a partial three-dimensional structural schematic diagram of the present invention; Figure 2 It is a front view cross-sectional structural schematic diagram of the present invention; Figure 3 It is a schematic cross-sectional view of the material storage and feeding mechanism of the present invention; Figure 4 It is a cross-sectional structural schematic diagram of the dispersed material feeding mechanism of the present invention; Figure 5It is a schematic cross-sectional view of the static electricity removal mechanism of the present invention; Figure 6 It is a cross-sectional structural schematic diagram of the conveying speed regulating mechanism and the static electricity removal frequency control mechanism of the present invention; Figure 7 It is a three-dimensional structural schematic diagram of the elastic compensation mechanism of the present invention.

[0018] In the figure: 1 mounting bracket, 2 material storage and feeding mechanism, 21 material storage shell, 22 anti-drop frame, 23 electric vibrator, 3 dispersing unloading mechanism, 31 unloading barrel, 32 limit slide bar, 33 connecting plate, 34 return spring, 35 dispersing shell, 36 dispersing mesh plate, 37 elastic folding rubber sleeve, 38 cross plate, 39 linkage shaft, 310 cam, 311 bearing seat, 312 transmission shaft, 313 bevel gear assembly, 314 sprocket assembly, 4 interval static electricity removal mechanism, 41 L-shaped vertical plate, 42 electric push rod, 43 lifting Plate, 44 conductive block, 45 grounding wire, 46 collector block, 5 conveying speed control mechanism, 51 control shell, 52 control screw, 53 control motor, 54 control seat, 55 feedback resistor rod, 56 feedback conductive contact piece, 57 pointer, 58 stirring speed scale plate, 6 static electricity removal frequency control mechanism, 61 reciprocating screw, 62 forward and reverse motor, 63 trigger plate, 64 trigger switch, 7 elastic compensation mechanism, 71 fixed frame, 72 push rod, 73 push spring, 8 screw conveyor, 9 PLC controller. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] like Figure 1-Figure 7 As shown, an automatic feeding device for producing tough asphalt for pavement comprises a mounting bracket 1 and also comprises: The screw conveyor 8 is fixedly mounted on the upper end of the mounting bracket 1; The material storage and feeding mechanism 2 is fixedly installed at the feed port of the screw conveyor 8. The material storage and feeding mechanism 2 includes a material storage shell 21 fixedly installed at the feed port of the screw conveyor 8. An anti-slip frame 22 is fixedly installed on the upper side of the inner wall of the material storage shell 21. An electric vibration rod 23 is installed in the anti-slip frame 22, which can perform stable feeding work and ensure the stability of modifier transportation.

[0021] The dispersing unloading mechanism 3 is fixedly mounted at the discharge port of the screw conveyor 8 and is drivingly connected to the screw conveyor 8. The dispersing unloading mechanism 3 includes a discharge barrel 31 fixedly connected to the discharge port at the bottom of the screw conveyor 8. A plurality of limit slide bars 32 arranged side by side are fixedly connected to the bottom opposite sides of the bottom of the discharge barrel 31. The same connecting plate 33 is slidably sleeved outside the plurality of limit slide bars 32 on the same side. A plurality of return springs 34 sleeved outside the limit slide bars 32 are fixedly connected between the connecting plate 33 and the discharge barrel 31. The lower ends of the two connecting plates 33 are fixedly connected to the same dispersing shell 35. The bottom of the inner wall of the dispersing shell 35 is detachably fixedly connected to a dispersing mesh plate 36 by bolts. The upper end of the dispersing shell 35 and the lower end of the discharge barrel 31 are fixedly connected by an elastic folding rubber sleeve 37. The outer wall of the discharge barrel 31 is also fixedly connected to a transverse plate 38, on which a linkage shaft 39 is rotatably sleeved, and the lower end of the linkage shaft 39 is fixedly connected to a cam 310 located on one side of the connecting plate 33, and the upper end of the transverse plate 38 is also fixedly provided with a bearing seat 311, and the inner wall of the bearing seat 311 is rotatably sleeved with a transmission shaft 312 through a ball bearing, one end of the transmission shaft 312 is transmission-connected to the upper end of the linkage shaft 39 through a bevel gear assembly 313, and the other end of the transmission shaft 312 is transmission-connected to the rotating end of the screw conveyor 8 through a sprocket assembly 314, so that the modifier can be fed in a more dispersed manner, so that the modifier can be mixed with the base asphalt more evenly, thereby improving the distribution uniformity of the modifier and making the stress distribution of the tough asphalt more uniform.

[0022] The interval static elimination mechanism 4 is fixedly mounted on the mounting bracket 1 and the screw conveyor 8. The interval static elimination mechanism 4 includes an L-shaped vertical plate 41 fixedly mounted on the rear side of the upper end of the mounting bracket 1. Two electric push rods 42 are symmetrically fixedly inserted in the horizontal part of the L-shaped vertical plate 41. The lower movable ends of the two electric push rods 42 are fixedly connected to the same lifting plate 43. A plurality of conductive blocks 44 are evenly fixedly mounted on the lower end of the lifting plate 43. A grounding wire 45 is fixedly connected to the upper side of the conductive block 44. A plurality of collector blocks 46 corresponding to the positions of the conductive blocks 44 are embedded at the upper end of the screw conveyor 8. An elastic compensation mechanism 7 is installed between the electric push rod 42 and the lifting plate 43. The static electricity accumulated during the operation of the screw conveyor 8 can be quickly discharged in an interval contact manner to avoid static electricity accumulation which will cause the powdered modifier particles to attract each other and cause agglomeration.

[0023] The elastic compensation mechanism 7 includes a fixed frame 71 fixedly connected to the moving end of the electric push rod 42, and the upper end of the lifting plate 43 is symmetrically fixedly connected with a plurality of pushing rods 72 arranged corresponding to the position of the fixed frame 71. The upper ends of the pushing rods 72 pass through the bottom of the fixed frame 71, and the lower end of the fixed frame 71 and the upper end of the lifting plate 43 are fixedly connected with a plurality of pushing springs 73 mounted outside the pushing rods 72 to ensure the quality of static electricity removal.

[0024] The conveying speed regulating mechanism 5 is fixedly mounted on the upper end of the mounting bracket 1 and is electrically connected to the screw conveyor 8. The conveying speed regulating mechanism 5 includes a regulating shell 51. The inner wall of the regulating shell 51 is rotatably connected to a regulating screw 52. The outer wall of the regulating shell 51 is fixedly mounted with a regulating motor 53 for driving the regulating screw 52 to rotate. The rod wall of the regulating screw 52 is threadedly sleeved with a regulating seat 54. The inner wall of the regulating shell 51 is also fixedly mounted with a feedback resistor rod 55 arranged parallel to the regulating screw 52. The side wall of the regulating seat 54 is provided with a sleeve. A feedback conductive contact 56 that is in electrical contact with the feedback resistor rod 55 is fixedly connected to the inner wall of the corresponding sleeve hole on the outside of the feedback resistor rod 55. A pointer 57 is fixedly connected to the upper end of the regulating seat 54. The upper end of the pointer 57 passes through the upper end of the regulating shell 51 through a strip opening opened at the upper end of the regulating shell 51. A stirring speed scale plate 58 corresponding to the position of the pointer 57 is also fixedly installed on the upper end of the regulating shell 51, so that the feeding speed of the screw conveyor 8 can be regulated based on the stirring speed to ensure that the stirring speed and the feeding speed match.

[0025] The static electricity removal frequency control mechanism 6 is installed in the conveying speed control mechanism 5. The static electricity removal frequency control mechanism 6 includes a reciprocating screw 61 rotatably connected to the inner wall of the control shell 51. The reciprocating screw 61 is arranged in parallel with the control screw 52. The outer wall of the control shell 51 is fixedly provided with a forward and reverse motor 62 for driving the reciprocating screw 61 to rotate. The rod wall of the reciprocating screw 61 is threadedly sleeved with a trigger plate 63. The lower end side wall of the control seat 54 is fixedly provided with a trigger switch 64 arranged opposite to the trigger plate 63. The lower end of the trigger plate 63 is fixedly connected to a limiting slider. The bottom of the inner wall of the control shell 51 is provided with a limiting slide groove that matches the limiting slider for sliding connection. The static electricity removal interval frequency can be automatically adjusted based on the feeding speed to ensure the timeliness of static electricity elimination.

[0026] The PLC controller 9 is fixedly mounted on the upper end of the mounting bracket 1 and is electrically connected to the screw conveyor 8, the material storage and feeding mechanism 2, the dispersed unloading mechanism 3, the interval static electricity removal mechanism 4, the conveying speed regulating mechanism 5 and the static electricity removal frequency control mechanism 6 respectively.

[0027] The operating principle of the present invention is described as follows: the discharge port of the screw conveyor 8 is placed correspondingly to the feed port of the rear end stirring tank, the modifier to be conveyed is placed in the storage shell 21, and before starting to feed, the control motor 53 is manually controlled according to the stirring speed of the rear end stirring tank to drive the control motor 53 to rotate, and the control screw 52 is driven by the control seat 54 to drive the feedback conductive contact piece 56 to slide on the feedback resistor rod 55 through the threaded sleeve effect of the control screw 52 and the control seat 54, and the control seat 54 synchronously drives the pointer 57 to move relative to the stirring speed scale plate 58 until the pointer 5 The position of the relative stirring speed scale plate 58 corresponds to the data of the current stirring speed. Specifically, the faster the stirring speed, the pointer 57 needs to move to a position further behind the stirring speed scale plate 58, so that the feedback conductive contact 56 slides a greater distance on the feedback resistor rod 55, so that the access resistance of the feedback resistor rod 55 is smaller, and the feedback conductive contact 56 and the feedback resistor rod 55 are connected in series to the power supply circuit of the screw conveyor 8, and the screw conveyor 8 is a DC motor device, so that the power supply current of the screw conveyor 8 is increased, so that the screw conveyor 8 works at a higher feeding speed; The modifier stored in the material storage shell 21 automatically falls into the screw conveyor 8 for transportation due to gravity. The screw conveyor 8 is a conveying device that uses the rotation of spiral blades to push the material to move along a fixed casing. Its working principle is similar to that of an Archimedean screw pump. It mainly uses the spiral blades to generate axial thrust on the material during rotation, so that the material can be continuously transported in a closed trough or pipeline. Therefore, when the screw conveyor 8 is working, the modifier is transferred, and the modifier located on the upper side of the material storage shell 21 will continue to enter the screw conveyor 8. When feeding, the PLC controller 9 controls the electric vibrating rod 23 to work. The electric vibrating rod 23 uses the rotational motion of the motor to convert it into a linear reciprocating motion of the vibrating rod to generate vibration. Its core components are the motor and the eccentric block. When the motor is started, it drives the eccentric block to rotate at high speed, and the center of gravity of the eccentric block is not on the rotating shaft. The center position, therefore, centrifugal force will be generated during the rotation process. Since the direction of the centrifugal force is constantly changing (periodically changing with the rotation of the eccentric block), this periodically changing force will cause the vibrating rod to vibrate. The electric vibrating rod 23 vibrates the modifier powder stored in the storage shell 21, so that the modifier can be vibrated to remain loose, so that the modifier can smoothly pass through the feed port into the screw conveyor 8, thereby avoiding the problem of modifiers piling up and affecting stable feeding. The feedback conductive contact 56 and the feedback resistor rod 55 are also connected in series to the power supply circuit of the electric vibrating rod 23. The electric vibrating rod 23 is a DC motor device. The motor speed in the electric vibrating rod 23 is increased, thereby increasing the vibration frequency of the electric vibrating rod 23, so that when the conveying speed of the screw conveyor 8 is increased, the vibration frequency of the electric vibrating rod 23 is simultaneously increased, providing a stronger vibration effect and ensuring stable feeding. The screw conveyor 8 conveys the modifier to the discharge barrel 31 for delivery. The modifier falls into the dispersion shell 35 through the elastic folding rubber sleeve 37. The rotating end of the screw conveyor 8 drives the transmission shaft 312 to rotate synchronously through the sprocket assembly 314. The transmission shaft 312 drives the linkage shaft 39 to rotate synchronously through the bevel gear assembly 313. The linkage shaft 39 drives the cam 310 to rotate continuously. When the protruding part of the cam 310 pushes on the connecting plate 33 on one side, the connecting plate 33 slides along the limit slide rod 32 to overcome the elastic force of the return spring 34. , and then drive the dispersion shell 35 to move synchronously. When the protruding part of the cam 310 leaves the connecting plate 33, the dispersion shell 35 moves back under the action of the reset spring 34, and then the dispersion shell 35 drives the dispersion mesh plate 36 to move at high frequency, so that the modifier passes through the dispersion screening of the dispersion mesh plate 36 and then falls into the stirring tank at the rear end. The stirring tank at the rear end is filled with base asphalt, so that the modifier can be fed more dispersedly, so that the modifier can be mixed with the base asphalt more evenly, and the distribution uniformity of the modifier is improved; During the process of spiral conveying, the PLC controller 9 synchronously controls the forward and reverse motor 62 to rotate forward first, and the forward and reverse motor 62 drives the reciprocating screw 61 to rotate, and the trigger plate 63 is moved in the regulating shell 51 through the threaded sleeve action of the reciprocating screw 61 and the trigger plate 63 until the trigger plate 63 presses on the trigger switch 64. At this time, the PLC controller 9 controls the interval anti-static mechanism 4 to work for 3s to remove static electricity from the spiral conveyor 8, and after the trigger switch 64 is pressed and triggered, the PLC controller 9 controls the forward and reverse motor 62 to reverse, so that the trigger plate 63 moves back, until the trigger plate 63 presses on the trigger switch 64 again, and the PLC controller 9 controls the interval anti-static mechanism 4 to work again, and the PLC controller 9 controls the forward and reverse motor 62 to rotate forward again. , the rotation direction of the forward and reverse motor 62 is switched back and forth, and when the conveying speed required by the screw conveyor 8 is fast, the distance moved by the regulating seat 54 in the regulating shell 51 is greater, so that the interval between the trigger switch 64 and the trigger plate 63 is small, and the trigger switch 64 is pressed and triggered in a shorter time, thereby increasing the frequency of static electricity removal. It is additionally explained that even when the conveying speed of the screw conveyor 8 reaches the maximum and the interval between the trigger switch 64 and the trigger plate 63 reaches the minimum, the interval time of the trigger plate 63 pressing on the trigger switch 64 will be greater than 10s, because the static electricity accumulation is not so fast, and the static electricity removal work of the previous stage will not be completed before the next stage of static electricity removal work is carried out, and there is an interval for static electricity removal; When performing static electricity removal, the PLC controller 9 controls the electric push rod 42 to push the fixed frame 71 downward by a fixed distance, so that the conductive block 44 contacts the collector block 46, and the static electricity accumulated on the screw conveyor 8 is quickly discharged and discharged through the grounding wire 45. The push rod 72 and the push spring 73 provide an extrusion force on the conductive block 44 to ensure that the conductive block 44 and the collector block 46 can be stably in contact with each other to ensure the quality of static electricity removal. The collector block 46 can collect the static electricity generated by the screw conveyor 8 during the feeding operation. When the screw conveyor 8 is running, due to the friction between the powdered modifier and the spiral blades and the pipe wall and Collision will generate static electricity. The collector block 46 is made of a material with good conductive properties (such as metal). After it is installed on the screw conveyor 8, it can form a conductive path with the metal part of the screw conveyor 8. Because static electricity has the characteristic of being distributed on the surface of the conductor and transferred to the low potential area, the collector block 46 can guide the static electricity generated in the surrounding area to itself, thereby playing a role in concentrating static electricity. It should be noted that an insulating layer is provided on the outer side of the conductive block 44, and only the side of the conductive block 44 facing the collector block 46 has no insulation protection. On the premise of achieving stable static electricity removal, the problem of current leakage causing safety hazards is avoided.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An automated feeding device for producing tough asphalt for road surfaces, comprising a mounting bracket (1), characterized in that: Also includes: A screw conveyor (8) is fixedly mounted on the upper end of the mounting bracket (1); A material storage and feeding mechanism (2) is fixedly mounted at the feed inlet of the screw conveyor (8); A dispersing unloading mechanism (3) is fixedly mounted at the discharge port of the screw conveyor (8) and is drivingly connected to the screw conveyor (8); An interval static electricity removal mechanism (4) is fixedly mounted on the mounting bracket (1) and the screw conveyor (8); A conveying speed regulating mechanism (5) is fixedly mounted on the upper end of the mounting bracket (1) and is electrically connected to the screw conveyor (8); A static electricity removal frequency control mechanism (6) is arranged in the conveying speed control mechanism (5); A PLC controller (9) is fixedly mounted on the upper end of the mounting bracket (1) and is electrically connected to the screw conveyor (8), the material storage and feeding mechanism (2), the dispersing and unloading mechanism (3), the interval static electricity removal mechanism (4), the conveying speed control mechanism (5) and the static electricity removal frequency control mechanism (6).

2. The automatic feeding device for producing pavement tough asphalt according to claim 1 is characterized in that: The material storage and feeding mechanism (2) comprises a material storage shell (21) fixedly mounted at the feed port of the screw conveyor (8), an anti-slip frame (22) fixedly mounted on the upper side of the inner wall of the material storage shell (21), and an electric vibration rod (23) mounted inside the anti-slip frame (22).

3. The automatic feeding device for producing pavement tough asphalt according to claim 1 is characterized in that: The dispersing unloading mechanism (3) comprises an unloading barrel (31) fixedly connected to a discharge port at the bottom of the screw conveyor (8); a plurality of limit slide bars (32) arranged side by side are fixedly connected to the two opposite sides of the bottom of the unloading barrel (31); a common connecting plate (33) is slidably sleeved outside the plurality of limit slide bars (32) on the same side; a plurality of return springs (34) sleeved outside the limit slide bars (32) are fixedly connected between the connecting plate (33) and the unloading barrel (31); the lower ends of the two connecting plates (33) are fixedly connected to the same dispersing shell (35); the bottom of the inner wall of the dispersing shell (35) is detachably fixedly connected to a dispersing mesh plate (36) by bolts; the upper end of the dispersing shell (35) and the unloading barrel (31) are connected to the dispersing mesh plate (36) by bolts; The lower end of the material discharge barrel (31) is fixedly connected to an elastic folding rubber sleeve (37), the outer wall of the material discharge barrel (31) is also fixedly connected to a transverse plate (38), a linkage shaft (39) is rotatably sleeved on the transverse plate (38), the lower end of the linkage shaft (39) is fixedly connected to a cam (310) located on one side of the connecting plate (33), the upper end of the transverse plate (38) is also fixedly provided with a bearing seat (311), the inner wall of the bearing seat (311) is rotatably sleeved with a transmission shaft (312) via a ball bearing, one end of the transmission shaft (312) is transmission-connected to the upper end of the linkage shaft (39) via a bevel gear assembly (313), and the other end of the transmission shaft (312) is transmission-connected to the rotating end of the screw conveyor (8) via a sprocket assembly (314).

4. The automatic feeding device for producing pavement tough asphalt according to claim 1 is characterized in that: The interval static electricity removal mechanism (4) comprises an L-shaped vertical plate (41) fixedly mounted on the rear side of the upper end of the mounting bracket (1); two electric push rods (42) are symmetrically fixedly inserted into the horizontal part of the L-shaped vertical plate (41); the lower movable ends of the two electric push rods (42) are fixedly connected to the same lifting plate (43); a plurality of conductive blocks (44) are evenly fixedly mounted on the lower end of the lifting plate (43); a grounding wire (45) is fixedly connected to the upper side of the conductive blocks (44); a plurality of current collector blocks (46) corresponding to the positions of the conductive blocks (44) are embedded at the upper end of the screw conveyor (8); and an elastic compensation mechanism (7) is installed between the electric push rods (42) and the lifting plate (43).

5. The automatic feeding device for producing pavement tough asphalt according to claim 1 is characterized in that: The conveying speed control mechanism (5) comprises a control shell (51), the inner wall of the control shell (51) is rotatably connected to a control screw (52), the outer wall of the control shell (51) is fixedly provided with a control motor (53) for driving the control screw (52) to rotate, the rod wall of the control screw (52) is threadedly sleeved with a control seat (54), the inner wall of the control shell (51) is further fixedly provided with a feedback resistance rod (55) arranged parallel to the control screw (52), and the side of the control seat (54) is fixedly provided with a control motor (53) for driving the control screw (52) to rotate. A sleeve hole is formed on the wall and is sleeved on the outside of the feedback resistor rod (55), and a feedback conductive contact piece (56) that is in electrical contact with the feedback resistor rod (55) is fixedly connected to the inner wall of the corresponding sleeve hole. A pointer (57) is fixedly connected to the upper end of the regulating seat (54), and the upper end of the pointer (57) passes through the upper end of the regulating shell (51) through a strip-shaped opening formed on the upper end of the regulating shell (51). A stirring speed scale plate (58) corresponding to the position of the pointer (57) is also fixedly mounted on the upper end of the regulating shell (51).

6. The automatic feeding device for producing pavement tough asphalt according to claim 5, characterized in that: The static electricity removal frequency control mechanism (6) comprises a reciprocating screw (61) rotatably connected to the inner wall of the regulating shell (51); the reciprocating screw (61) is arranged in parallel with the regulating screw (52); a forward and reverse motor (62) for driving the reciprocating screw (61) to rotate is fixedly mounted on the outer wall of the regulating shell (51); a trigger plate (63) is threadedly sleeved on the rod wall of the reciprocating screw (61); and a trigger switch (64) arranged opposite to the trigger plate (63) is fixedly mounted on the lower side wall of the regulating seat (54).

7. The automatic feeding device for producing pavement tough asphalt according to claim 4 is characterized in that: The elastic compensation mechanism (7) comprises a fixed frame (71) fixedly connected to the moving end of the electric push rod (42); the upper end of the lifting plate (43) is symmetrically fixedly connected to a plurality of pushing rods (72) arranged corresponding to the position of the fixed frame (71); the upper ends of the pushing rods (72) pass through the bottom of the fixed frame (71); the lower end of the fixed frame (71) and the upper end of the lifting plate (43) are fixedly connected to a plurality of pushing springs (73) sleeved on the pushing rods (72).

8. The automatic feeding device for producing pavement tough asphalt according to claim 6, characterized in that: The lower end of the trigger plate (63) is fixedly connected to a limit slider, and the bottom of the inner wall of the regulating shell (51) is provided with a limit sliding groove that matches and slides with the limit slider.

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