Asphalt mixture stirring system added with rock asphalt

Abstract

The utility model provides an asphalt mixture stirring system for adding rock asphalt, which comprises a lifting machine, a storage bin, a metering scale, a stirring cylinder, a level gage, a control module, a lifting control circuit, a storage control circuit, a full material control circuit and a metering control circuit, the lifting control circuit comprises a lifting machine starting branch connected with the output end of the control module and a lifting machine operation branch connected with the input end of the control module, and the storage control circuit comprises a coil of a bin gate intermediate relay connected with the output end of the control module and a normally open contact of the bin gate intermediate relay connected with the control end of a bin gate air cylinder in series. And the full material control circuit comprises a coil of a full material intermediate relay connected in series with a normally open contact of the level gage, and a normally open contact of the full material intermediate relay connected with the input end of the control module. According to the utility model, rock asphalt can be added, and the ageing resistance and the high-temperature resistance of an asphalt mixture are improved.

Description

Technical Field

[0001] The utility model relates to an asphalt mixture stirring system with added rock asphalt. Background Art

[0002] The asphalt mixture obtained by the existing asphalt mixing system has the defects of insufficient anti-aging and high temperature resistance. The roads paved with such asphalt mixtures age quickly and have poor durability. In order to solve this defect, rock asphalt can be added during the asphalt mixing process. Rock asphalt has a strong resistance to microbial erosion and has the characteristics of forming a dense and bright protective film on the free surface. Its addition can greatly improve the weather resistance and UV resistance of ordinary asphalt, improve the durability of asphalt pavement, slow down the aging of asphalt, and thus extend the service life of the road. However, in the existing asphalt mixing system, there is no equipment that can control the addition of rock asphalt. Utility Model Content

[0003] The purpose of the utility model is to provide an asphalt mixture stirring system with added rock asphalt, which can realize the addition of rock asphalt, thereby improving the anti-aging and high temperature resistance of the asphalt mixture.

[0004] The utility model is realized by the following technical solutions:

[0005] An asphalt mixture mixing system with rock asphalt added, comprising a hoist, a storage bin, a metering scale and a mixing cylinder connected in sequence, a material level meter arranged on the storage bin, a control module, a hoisting control circuit, a storage control circuit, a full material control circuit and a metering control circuit, wherein the hoisting control circuit comprises a hoist starting branch connected to the output end of the control module, and a hoist running branch connected to the input end of the control module, the storage control circuit comprises a coil of a bin door intermediate relay connected to the output end of the control module, and a normally open contact of the bin door intermediate relay connected in series with the bin door cylinder control end, the full material control circuit comprises a coil of a full material intermediate relay connected in series with the normally open contact of the material level meter, and a normally open contact of the full material intermediate relay connected to the input end of the control module, and the metering control circuit comprises a metering gate control branch connected to the input end of the control module, and a metering gate detection branch connected to the output end of the control module. The characteristics of rock asphalt under natural conditions are close to those of coal, so it needs to be added in the form of adding solid matter, and the addition of rock asphalt can be achieved through various control circuits, thereby improving the anti-aging and high temperature resistance of asphalt mixture.

[0006] Furthermore, the hoist starting branch includes a normally open contact of a starting intermediate relay connected in series, a first normally open contact of a motor starter of the hoist and a coil of a first contactor, and a coil of a starting intermediate relay connected to an output end of a control module.

[0007] Furthermore, the hoist operation branch includes a first normally open contact of a first contactor and a coil of an operation intermediate relay connected in series, and a normally open contact of the operation intermediate relay connected to an input end of a control module.

[0008] Furthermore, the lifting control circuit also includes an overload branch, which includes a normally closed contact of a motor starter and a coil of an overload intermediate relay connected in series, and a normally open contact of the overload intermediate relay connected to an input end of the control module.

[0009] Furthermore, the metering gate control branch includes a coil of a metering gate intermediate relay connected to an output end of the control module, and a normally open contact of the metering gate intermediate relay connected to a control end of a metering gate cylinder.

[0010] Furthermore, the metering door detection branch includes a door state detection switch and a coil of a detection intermediate relay connected in series, and a normally open contact of the detection intermediate relay connected to the input end of the control module.

[0011] Furthermore, it also includes a motor control branch, which includes a second normally open contact of the motor starter, a second normally open contact of the first contactor and a motor connected in series.

[0012] Furthermore, the control module is a PLC. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a schematic diagram of the main circuit of the utility model.

[0016] Figure 3 This is a schematic diagram of the control circuit of the utility model.

[0017] Among them, 1. elevator; 2. storage bin; 21. bin door; 3. weighing scale; 31. weighing door; 32. weighing sensor; 4. mixing tank; 5. material level meter; 6. control module; TKQ2, coil of bin door intermediate relay; TKQ21, normally open contact of bin door intermediate relay; TYV1, bin door cylinder control end; K1, normally open contact of material level meter; TKI 1. Coil of full-load intermediate relay; TKI11, normally open contact of full-load intermediate relay; TKQ1, coil of starting intermediate relay; TKQ11, normally open contact of starting intermediate relay; TQ11, first normally open contact of motor starter; TQ12, second normally open contact of motor starter; TQ13, normally closed contact of motor starter; TKM1, coil of first contactor; TKM11, first normally open contact of first contactor; TKM12, second normally open contact of first contactor; TKI2, coil of running intermediate relay; TKI21, normally open contact of running intermediate relay; TKI 3. Coil of overload intermediate relay; TKI 31, normally open contact of overload intermediate relay; TKQ3, coil of metering door intermediate relay; TKQ31, normally open contact of metering door intermediate relay; TYV2, metering door control terminal; K2, door status detection switch; TKI4, coil of detection intermediate relay; TKI41, normally open contact of detection intermediate relay. DETAILED DESCRIPTION

[0018] like Figures 1 to 3 As shown, the asphalt mixture mixing system with rock asphalt added includes an elevator 1, a storage bin 2, a metering scale 3 and a mixing tank 4, a material level meter 5 arranged on the storage bin 2, a control module 6, a lifting control circuit, a storage control circuit, a full material control circuit, a metering control circuit and a motor control branch. The elevator 1 is driven by a motor and is provided with a manually controlled motor starter. When the elevator 1 needs to work, the manually controlled motor starter coil is energized. The output end of the elevator 1 is connected to the input end of the storage bin 2, the output end of the storage bin 2 is connected to the input end of the metering scale 3, and the output end of the metering scale 3 is connected to the input end of the mixing tank 4. The material level meter 5 is a high-level material level meter 5. The metering scale 3 is dedicated to metering the corresponding proportion of rock asphalt into the mixing tank 4 according to the formula requirements. Rock asphalt, aggregate, asphalt, and mineral powder are simultaneously put into the mixing tank 4. A weighing sensor 32 is provided on the metering scale 3, wherein the material level meter 5 and the weighing sensor 32 are both connected to the control module 6.

[0019] The hoist control circuit includes a hoist 1 starting branch connected to the output end of the control module 6, a hoist 1 running branch connected to the input end of the control module 6, and an overload branch. The hoist 1 starting branch includes the normally open contact TKQ11 of the starting intermediate relay connected in series, the first normally open contact TQ11 of the motor starter of the hoist 1 and the coil TKM1 of the first contactor, and the coil TKQ1 of the starting intermediate relay connected to the output end of the control module 6. The hoist 1 running branch includes the first normally open contact TKM11 of the first contactor connected in series and the coil TKI2 of the running intermediate relay, and the normally open contact TKI21 of the running intermediate relay connected to the input end of the control module 6. The overload branch includes the normally closed contact TQ13 of the motor starter connected in series and the coil TKI 3 of the overload intermediate relay, and the normally open contact TKI 31 of the overload intermediate relay connected to the input end of the control module 6.

[0020] The material storage control circuit includes a coil TKQ2 of a bin door intermediate relay connected to the output end of the control module 6, and a normally open contact TKQ21 of a bin door intermediate relay connected in series with the bin door cylinder control end TYV1; the material full control circuit includes a coil TKI 1 of a material full intermediate relay connected in series with the normally open contact K1 of the material level meter, and a normally open contact TKI 11 of a material full intermediate relay connected to the input end of the control module 6.

[0021] The metering control circuit includes a metering gate 31 control branch connected to the input end of the control module 6, and a metering gate 31 detection branch connected to the output end of the control module 6. The metering gate 31 control branch includes a coil TKQ3 of a metering gate intermediate relay connected to the output end of the control module 6, and a normally open contact TKQ31 of a metering gate intermediate relay connected to the metering gate cylinder control end. The metering gate 31 detection branch includes a door state detection switch K2 and a coil TKI4 of a detection intermediate relay connected in series, and a normally open contact TKI41 of a detection intermediate relay connected to the input end of the control module 6.

[0022] The motor control branch includes a second normally open contact TQ12 of a motor starter, a second normally open contact TKM12 of a first contactor, and a motor connected in series.

[0023] In this embodiment, the control module 6 is a PLC, and the control module 6 is also connected to the mixing tank 4 to detect the feeding status of the mixing tank 4. This part is the existing technology.

[0024] During operation, the coil of the motor starter is manually closed to be energized, and the first normally open contact TQ11 of the motor starter is energized. The PLC outputs the hoist 1 signal to energize the coil TKQ1 of the starting intermediate relay, and the normally open contact TKQ11 of the starting intermediate relay is closed. At this time, the coil TKM1 of the first contactor is energized, and the first normally open contact TKM11 of the first contactor is closed, so that the coil TKI2 of the running intermediate relay is energized, and the normally open contact TKI21 of the running intermediate relay is closed to allow the PLC to obtain the running signal, and at this time, the first normally open contact TQ11 of the motor starter and the second normally open contact TKM12 of the first contactor are both closed, so the hoist 1 is continuously in operation; when the motor is overloaded, the motor starter trips, and the normally closed contact TQ13 of the motor starter is closed, and the coil TKI of the overload intermediate relay is 3 is energized, and the normally open contact TKI31 of the overload intermediate relay is closed, that is, the PLC receives an overload signal, and the PLC can control the interface to display an alarm message or control the sound and light alarm signal to send a signal; during the operation of the hoist 1, the rock asphalt is transported to the storage bin 2, but when the level meter 5 detects a high level signal, the normally open contact K1 of the level meter is closed, and the coil TKI 1 of the full intermediate relay is energized, so the normally open contact TKI 11 is closed, that is, PLC gets the signal of full material, PLC makes the coil of motor starter lose power, so that hoist 1 stops working; when mixing cylinder 4 finishes feeding (asphalt, aggregate, etc.), PLC controls coil TKQ3 of metering gate intermediate relay to be energized, then normally open contact TKQ31 of metering gate intermediate relay is closed, so that metering gate control terminal TYV2 (this control terminal can control the action of metering gate cylinder, this process is prior art) is energized, and then metering gate 31 is opened, rock asphalt is fed into mixing cylinder 4, and metering gate 31 is closed after the set delay time is up; after metering gate 31 is closed, When the door status detection switch K2 is closed (the door status detection switch K2 is the internal detection switch of the metering door butterfly valve, which is the prior art), the coil TKI4 of the detection intermediate relay is energized, and the normally open contact TKI41 of the detection intermediate relay is closed. The PLC receives the metering door 31 closing signal. After a period of time (2 seconds), the PLC controls the coil TKQ2 of the bin door intermediate relay to be energized, so that the normally open contact TKQ21 of the bin door intermediate relay is closed, and the bin door cylinder control terminal TYV1 is energized to open the storage bin door 21. When the set weight is measured, the storage bin door 21 is closed.

[0025] The above is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the application scope of the present invention and the contents of the specification should still fall within the scope of the present invention.

Claims

1. An asphalt mixture mixing system with rock asphalt added, characterized in that: It includes a hoist, a storage bin, a metering scale and a mixing cylinder connected in sequence, a material level meter arranged on the storage bin, a control module, a hoisting control circuit, a storage control circuit, a full material control circuit and a metering control circuit. The hoisting control circuit includes a hoist starting branch connected to the output end of the control module, and a hoist running branch connected to the input end of the control module. The storage control circuit includes a coil of a bin door intermediate relay connected to the output end of the control module, and a normally open contact of the bin door intermediate relay connected in series with the bin door cylinder control end. The full material control circuit includes a coil of a full material intermediate relay connected in series with the normally open contact of the material level meter, and a normally open contact of the full material intermediate relay connected to the input end of the control module. The metering control circuit includes a metering door control branch connected to the input end of the control module, and a metering door detection branch connected to the output end of the control module.

2. The asphalt mixture mixing system with rock asphalt added according to claim 1, characterized in that: The hoist starting branch includes a normally open contact of a starting intermediate relay connected in series, a first normally open contact of a motor starter of the hoist and a coil of a first contactor, and a coil of a starting intermediate relay connected to an output end of a control module.

3. The asphalt mixture mixing system with rock asphalt added according to claim 2 is characterized in that: The hoist operation branch includes a first normally open contact of a first contactor and a coil of an operation intermediate relay connected in series, and a normally open contact of the operation intermediate relay connected to an input end of a control module.

4. The asphalt mixture mixing system with rock asphalt added according to claim 2, characterized in that: The lifting control circuit also includes an overload branch, which includes a normally closed contact of a motor starter and a coil of an overload intermediate relay connected in series, and a normally open contact of the overload intermediate relay connected to an input end of the control module.

5. An asphalt mixture stirring system with added rock asphalt according to claim 1, 2 or 3, characterized in that: The metering gate control branch includes a coil of a metering gate intermediate relay connected to an output end of a control module, and a normally open contact of the metering gate intermediate relay connected to a control end of a metering gate cylinder.

6. An asphalt mixture stirring system with added rock asphalt according to claim 1, 2 or 3, characterized in that: The metering door detection branch includes a door state detection switch and a coil of a detection intermediate relay connected in series, and a normally open contact of the detection intermediate relay connected to the input end of the control module.

7. An asphalt mixture stirring system with added rock asphalt according to claim 1, 2 or 3, characterized in that: It also includes a motor control branch, which includes a second normally open contact of the motor starter, a second normally open contact of the first contactor, and a motor connected in series.

8. An asphalt mixture stirring system with added rock asphalt according to claim 1, 2 or 3, characterized in that: The control module is a PLC.

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