CN205889499U - An automatic spraying maintenance device - Google Patents

Abstract

This utility model discloses an automatic spraying and curing device, including a walking system, a water supply system, a track, and an external DC power supply. The walking system includes a trolley, a PLC controller, a DC motor proximity switch, electrical cables, and the track. The water supply and spraying system includes an inlet solenoid valve proximity switch, an inlet solenoid valve, a float, a radar signal receiver, a water pump, and spray pipes. The device automatically moves back and forth using PLC programming and DC motor proximity switches, automatically adds and stops water using proximity switches to control the water pipe solenoid valve, and uses radar signals to control the spraying. This utility model device provides uniform spraying, high efficiency, reduces manual labor and pipeline layout, saves water resources, and achieves full automation of the precast concrete box girder curing process.

Description

An automatic spraying maintenance device

technical field

The utility model belongs to the technical field of spraying maintenance of prefabricated concrete box girders, in particular to an automatic spraying maintenance device.

Background technique

The construction of China's high-speed railway is an important part of my country's modernization. Due to the terrain, the viaduct structure occupies a high proportion in the construction of the high-speed railway. Generally speaking, the viaduct accounts for as much as 70% of the entire high-speed railway. -80%. In the construction of viaducts, precast concrete box girders are used most. Therefore, the guarantee of the construction quality of the precast concrete box girder is directly related to the success or failure of the high-speed railway construction. In the production process of precast concrete box girders, the maintenance of precast concrete box girders is an important link. Precast concrete box girders for high-speed railways are large in volume, and the amount of concrete poured in the production process is large. During the condensation process of adding water, the temperature of the concrete rises sharply due to the hydrothermal reaction. On the other hand, due to the requirements of the construction period, the precast concrete box girder needs steam curing to accelerate the hardening speed of the concrete to shorten the construction period. However, the temperature of the precast concrete box girder after steam curing reaches the highest value. If the box girder is not cooled in time, the temperature of each part of the box girder will be uneven, which will cause thermal stress cracking of the box girder box, resulting in cracks, which will affect the durability of the precast concrete box girder. At present, the known maintenance of precast concrete box girders is to manually spray water on both sides and ends of the box girder through pipes. This method is relatively primitive, the spraying is uneven, it consumes manpower and material resources, and wastes water resources, which is not conducive to large-scale production. .

Contents of the invention

In order to solve the shortcomings and deficiencies mentioned in the above-mentioned prior art, the utility model provides an automatic spraying maintenance device. The adopted technical scheme is: an automatic sprinkler maintenance device, including a walking system, a sprinkler water supply system, a track, and an external DC power supply.

The walking system includes a trolley, a PLC controller, a DC motor proximity switch, wires and cables and a track. The trolley includes a water tank, a cable duct, a support frame, an insulation board, a driving device and wheels. The water tank is arranged in the lower part of the trolley, and the inside of the water tank is equipped with a water pump, a water inlet solenoid valve proximity switch and a floating ball; the cable pipe runs through the top and bottom of the water tank to provide a reserved pipe for the control circuit; the lower part of the water tank is welded with the support The support frame is composed of welded section steel, which can support the weight of the water tank when it is full of water; the insulating plate is connected under the support frame, and the insulating plate has a certain strength and isolates the wheels and the driving device from each other, which acts as an insulating current The driving device and the wheel are arranged under the insulating plate, the driving device is arranged in the middle of the support frame, and is composed of a DC motor, a reducer, a sprocket, and a chain. The DC motor provides power, the reducer decelerates, and the sprocket chain Provide transmission power; the wheels include driving wheels, driven wheels and companion wheels, and two driving wheels are arranged at the front and rear ends of one side of the support frame, driven by two sets of chain transmission, and the other side of the support frame One driven wheel is set in the middle, and two follower wheels are set at both ends. The wheels are not affected by the unevenness of the track bending. In any case, there are 3 points on a plane. The DC motor proximity switches are provided at the front and rear ends of the track, and the DC motor proximity switches control the DC motor. When the trolley is at the starting point, add water. After the water is full, stop adding water. At the same time, the DC motor of the trolley starts to run forward. When the trolley reaches the end point and touches the DC motor approach switch, the motor stops rotating. Finally, stop adding water. At this time, the DC motor reverses, the trolley returns, and when it reaches the starting position, it touches the proximity switch of the DC motor at the starting point. The motor stops rotating and water is added to complete a cycle. The PLC controller is installed on the trolley, and is connected with the DC motor and the DC motor proximity switch to control the back and forth walking of the trolley, and the connecting wire between the PLC controller and the DC motor passes through the cable duct. According to the time required for the water supply of the trolley, set the interval time for the PLC controller to control the reverse rotation of the DC motor. After the car finishes adding water at the starting point or end point, after a necessary interval, it reaches the time value set in the PLC controller, and the PLC controller outputs instructions to control the reverse rotation of the DC motor.

The water supply and sprinkling system includes a water inlet solenoid valve proximity switch, a water inlet solenoid valve, a floating ball, a radar signal receiver, a water pump and a water spray pipeline. The proximity switch of the water inlet solenoid valve is installed at both ends of the track. When the trolley reaches the edge of the track and contacts the DC motor proximity switch, it also contacts the proximity switch of the water inlet solenoid valve. Open to supply water to the water tank of the trolley. Said floating ball is arranged in the water tank, and the floating ball rises with the rise of the water level in the water tank. The upper part of the water tank is also provided with a water inlet solenoid valve proximity switch. When the water level in the water tank reaches a certain height, the float ball touches the water inlet solenoid valve proximity switch on the top of the water tank, and the water inlet solenoid valve is closed to complete the water supply to the trolley. After the water supply is completed, the PLC controller controls the operation of the DC motor, and the trolley starts to move into the radar signal area. The radar signal receiver installed on the trolley receives the radar signal, and outputs instructions to control the operation of the water pump. The water is pumped into the water spray pipe and sprayed to spray and maintain the prefabricated concrete box girder.

Further, the track wheel and the trolley are threaded, and the height of the track wheel can be adjusted as required.

Further, the proximity switch of the water inlet solenoid valve is installed at a position of 1-2 cm near the proximity switch of the DC motor to ensure that the trolley triggers the proximity switch of the DC motor and at the same time triggers the proximity switch of the water inlet solenoid valve.

Further, the length of the track is greater than the length of the area that needs to be sprayed, and there is space for adding water to the trolley at both ends of the track.

Furthermore, according to actual needs, the advancing direction of the track can be designed as a curve.

Further, baffles are provided near the wheels on both sides of the trolley to prevent stones on the track from being stuck at the bottom of the wheels and affecting the advancement of the trolley.

Further, a hose is used to connect the water inlet electromagnetic valve and the water inlet of the water tank, and the length of the hose is greater than the length of the track.

The beneficial effects of the utility model are: the utility model provides an automatic spray maintenance device, which adopts PLC programming and a DC motor proximity switch to control equipment to automatically walk back and forth, uses a proximity switch to control the water pipe electromagnetic valve switch to automatically add water and stop water, and adopts radar Signal control device for spraying water. The device of the utility model sprays evenly, has high efficiency, reduces labor and pipeline layout, saves water resources, and realizes full automation of the maintenance process of the prefabricated concrete box girder.

Description of drawings

Fig. 1 is the schematic diagram of automatic spraying maintenance device;

Figure 2 is a front view of the trolley structure;

Fig. 3 is the back view of dolly structure;

Fig. 4 is a left view of the trolley structure;

In the figure: 1. Control box; 2. Water tank; 3. Cable duct; 4. Support frame; 5. Insulation board; 6. Bearing seat; 7. Driving wheel; 8. Driving device; 9. Water pump; ; 11, driven wheel; 12, DC motor; 13, water spray pipe; 14, floating ball; 15, baffle; 16, hose; 17, water inlet solenoid valve; 18, water inlet solenoid valve proximity switch; DC motor proximity switch; 20. PLC controller; 21. Radar signal receiver; 22. Water inlet solenoid valve proximity switch; 23. Water pump; 24. Wire and cable; 25. Track.

detailed description

Specific embodiments of the present utility model are described in detail below in conjunction with accompanying drawings.

An automatic sprinkler maintenance device, comprising a walking system, a sprinkler water supply system, a track 25, and an external DC power supply. As shown in FIG. 1 , the walking system includes a trolley, a PLC controller 20 , a DC motor proximity switch 19 , wires and cables 24 and a track 25 . As shown in Figure 2, the trolley includes a water tank 2, a cable duct 3, a support frame 4, an insulating plate 5, a driving device 8 and wheels. The water tank 2 is set on the upper part of the trolley, and the inside of the water tank 2 is provided with a water inlet solenoid valve proximity switch 22 and a floating ball 14; the cable pipe 3 runs through the top and bottom of the water tank to provide a reserved pipe for the control circuit; the lower part of the water tank 2 is welded with a support frame 4, The support frame 4 is composed of welded section steel, which can support the weight of the water tank 2 when it is full of water; the insulating plate 5 is connected to the bottom of the support frame 4, and the insulating plate 5 has a certain strength and isolates the wheels and the driving device 8 from each other to play the role of insulating current The drive unit 8 and the wheels are set below the insulating plate 5, and the drive unit 8 is arranged in the middle part of the support frame 4, and is composed of a DC motor 12, a reducer, a sprocket, and a chain. The DC motor 12 provides power, the reducer slows down, and the sprocket chain Provide transmission power; the wheels include driving wheels 7, driven wheels 11 and companion wheels 10, and two driving wheels 7 are arranged at the front and rear ends of one side of the support frame 4, driven by two sets of chain drives to walk, and the other side of the support frame 4 One driven wheel 11 is arranged in the middle, and two follower wheels 10 are arranged at both ends. The wheels are not affected by the unevenness of the track 25. In any case, three points are located on a plane. Both ends of the track 25 are provided with a DC motor proximity switch 19, and the DC motor proximity switch 19 controls the DC motor 12. The PLC controller 20 is connected with the DC motor 12 and the DC motor proximity switch 19 to control the back and forth walking of the dolly.

As shown in FIG. 1 , the water supply and sprinkler system includes a water inlet solenoid valve proximity switch 18 , a water inlet solenoid valve 17 , a float 14 , a radar signal receiver 21 , a water pump 23 and a water spray pipe 13 . The water inlet electromagnetic valve proximity switch 18 is installed at the two ends of the track. The water tank 2 is provided with a floating ball 14, and the floating ball 14 rises as the water level in the water tank 2 rises. The top of the water tank 2 is provided with a water inlet solenoid valve proximity switch 22. When the water level in the water tank reaches a certain height, the floating ball 14 hits the water inlet solenoid valve proximity switch 22 on the top of the water tank 2, and the water inlet solenoid valve 17 is closed. Water supply for the trolley. After the water supply is completed, the PLC controller 20 controls the operation of the DC motor 12, and the dolly starts to move into the radar signal area, and the radar signal receiver 21 installed on the dolly receives the radar signal, and outputs an instruction to control the operation of the water pump 23, and the water tank 2 The water in the water is pumped into the spray pipe 13 and sprayed, and the precast concrete box girder is sprayed and maintained.

This embodiment is carried out through three steps:

step one:

When the dolly was at the starting point of the track 25, the dolly touched the water inlet solenoid valve proximity switch 18 and the DC motor proximity switch 19, the water inlet solenoid valve 17 was opened, water was added to the dolly, and the PLC controller 20 started timing simultaneously. In the process of adding water, the floating ball 14 in the water tank 2 of the trolley continuously rises with the water level until it hits the water inlet solenoid valve proximity switch 22 on the top of the water tank, the water inlet solenoid valve 17 is closed, and the water supply to the car is stopped. After the water supply stops, after a necessary interval, the time value set in the PLC controller 20 is reached, and the PLC controller 20 outputs instructions to control the rotation of the DC motor 12 to drive the dolly to move on the track 25.

Step two:

When the dolly moves to the radar signal area, the radar signal receiver 21 installed on the dolly receives the radar signal, and outputs an instruction to control the operation of the water pump 23, and the water in the water tank 2 of the dolly is pumped into the water spray pipe 13 for spraying. , Spraying and curing precast concrete box girders.

Step three:

After the spraying is completed, the trolley reaches the end point of the track 25, and touches the proximity switch 18 of the water inlet solenoid valve and the proximity switch 19 of the DC motor installed at the end point, the DC motor 12 stops working, and the trolley is stationary; The controller 20 starts timing. In the process of adding water, the floating ball 14 in the water tank 2 of the trolley continuously rises with the water level until it hits the water inlet solenoid valve proximity switch 22 on the top of the water tank 2, and the water inlet solenoid valve 17 is closed, and the water supply to the car is stopped. After the water supply stops, after a necessary interval, the time value set in the PLC controller 20 is reached, and the PLC controller 20 outputs instructions to control the DC motor 12 to rotate in reverse, driving the dolly to move towards the starting point on the track 25.

Repeat the above steps to achieve the automatic maintenance function of the automatic spraying maintenance system.

Claims (7)

1. An automatic spraying maintenance device, comprising a walking system, a sprinkling water supply system, a track (25), an external DC power supply, is characterized in that the walking system comprises a dolly, a PLC controller (20), a DC motor proximity switch (19), Electric wire and cable (24) and track (25), wherein, dolly comprises water tank (2), cable duct (3), support frame (4), insulation plate (5), driving device (8) and wheel, water tank (2) It is arranged on the upper part of the trolley, and the inside of the water tank (2) is provided with a water inlet solenoid valve proximity switch (22) and a floating ball (14); the cable duct (3) runs through the top and bottom of the water tank, and the lower part of the water tank (2) is welded with a support frame (4 ), the support frame (4) is made up of welded section steel, which can support the weight of the water tank (2) when it is full of water; the support frame (4) is connected with an insulating plate (5) below, and the insulating plate (5) has a certain strength and will The wheels and the driving device (8) are isolated from each other and play the role of insulating current; the driving device (8) and the wheels are arranged under the insulating plate (5), and the driving device (8) is arranged in the middle of the support frame (4), and the DC motor (12) , speed reducer, sprocket and chain, the DC motor (12) provides power, the speed reducer decelerates, and the sprocket chain provides transmission power; the wheels include driving wheels (7), driven wheels (11) and companion wheels (10) , 2 driving wheels (7) are located at the front and rear ends of one side of the support frame (4), driven by two sets of chain transmissions, and a driven wheel (11) is arranged in the middle of the other side of the support frame (4). Two companion wheels (10) are set, DC motor proximity switches (19) are arranged at the front and rear ends of the track (25), and the DC motor proximity switches (19) control the DC motor (12), and the PLC controller (20) communicates with the DC motor ( 12), the DC motor (12) is connected to the proximity switch (19) to control the back and forth walking of the dolly; The water supply sprinkler system comprises a water inlet solenoid valve proximity switch (18), a water inlet solenoid valve (17), a floating ball (14), a radar signal receiver (21), a water pump (23) and a water spray pipeline (13), and the water inlet Electromagnetic valve proximity switch (18) is installed on track two ends, is provided with float (14) in the water tank (2), and float (14) rises along with the rising of water level in the water tank (2), and water tank (2) top is provided with There is a water inlet solenoid valve proximity switch (22). When the water level in the water tank reaches a certain height, the float (14) touches the water inlet solenoid valve proximity switch (22) on the top of the water tank (2), and the water inlet solenoid valve (17) Close, complete the water supply to the car, after the water supply is completed, the PLC controller (20) controls the DC motor (12) to run, the car starts to move into the radar signal area, and the radar signal receiver (21) installed on the car receives the radar signal , and output instructions to control the operation of the water pump (23), and the water in the water tank (2) is pumped into the water spray pipeline (13) for spraying. 2. A kind of automatic spraying and maintenance device according to claim 1, characterized in that, the companion wheel (10) and the trolley are connected by thread, and the height of the companion wheel can be adjusted. 3. A kind of automatic sprinkling maintenance device according to claim 1, characterized in that, the water inlet solenoid valve proximity switch (18) is installed at a position of 1-2cm near the DC motor proximity switch (19), to ensure that the trolley Trigger the proximity switch (18) of the water inlet solenoid valve while triggering the DC motor proximity switch (19). 4. A kind of automatic spraying maintenance device according to claim 1, characterized in that, the length of the track (25) is greater than the length of the area to be sprayed, and the space for adding water to the trolley is reserved at both ends of the track (25). 5. A kind of automatic spraying maintenance device according to claim 1, is characterized in that, the advancing direction of track is designed as a curve. 6. An automatic spraying and maintenance device according to claim 1, characterized in that baffles (15) are provided near the wheels on both sides of the trolley to prevent stones on the track from being stuck at the bottom of the wheels and affecting the progress of the trolley. 7. An automatic sprinkler maintenance device according to claim 1, characterized in that the water inlet solenoid valve (17) is connected with the water inlet of the water tank by a hose (16), and the length of the hose is longer than that of the track (25) length.