CN113911996B - Fire truck foam stock solution filling device and method - Google Patents

Abstract

The invention provides a device and a method for filling foam stock solution of a fire truck, comprising the following steps: the device comprises a bottom mounting plate, a dumping mechanism, an adjusting mechanism, a water pump set and a closing mechanism; one end of the bottom mounting plate is vertically provided with a vertical mounting plate; the two sides of the bottom mounting plate are respectively provided with the dumping mechanism; the adjusting mechanism is arranged between the two dumping mechanisms, and the dumping mechanisms drive the adjusting mechanisms to lift; the water pump set is arranged at the upper end of the vertical mounting plate and is used for pumping foam stock solution in the foam stock solution barrel; the approaching mechanism is arranged on the end face of the vertical mounting plate, and the whole device is close to the fire truck through the operation of the approaching mechanism. According to the invention, the foam stock solution barrel placed on the ground can be lifted into the dumping groove by arranging the lifting mechanism, so that the foam stock solution of the fire-fighting truck can be rapidly supplemented; the approaching mechanism can enable the device to be attached to a fire engine, and further improves the working efficiency during dumping.

Description

Device and method for filling foam stock solution of fire truck

technical field

The invention relates to the technical field of fire protection, in particular to a device and method for filling foam stock solution of a fire truck.

Background technique

As we all know, fire protection has always been an important task for the normal and healthy operation of our power system. The foam water used by fire trucks for firefighting is obtained by mixing the original foam solution stored in the fire truck with water in a certain proportion through the pipelines in the car. However, in order to ensure the quality of the foam stock solution stored in the fire truck and prevent it from being expired and invalid, it cannot be mixed with water to produce a large amount of foam. At regular intervals, the fire brigade in the station needs to replace the original foam solution for the fire truck.

In the prior art, whenever it is necessary to replace the foam stock solution in the fire truck, it is necessary to use a forklift to fork up a huge stock solution barrel that is nearly one meter high and weighs as much as two hundred kilograms, and then lift it to a height of nearly three meters. To go on the fire truck, a few firefighters should be assigned to climb to the roof of the car to hold the stock solution bucket with their hands, and slowly pour the foam stock solution into the foam stock solution tank of the fire truck manually. And this kind of large stock solution bucket has to be poured repeatedly ten barrels to completely replace the fire fighting stock solution of the fire truck. This process is undoubtedly very time-consuming and labor-intensive. Not only that, the replacement process is quite dangerous, because the stock solution bucket is very heavy, and it is very laborious for personnel to operate. In addition to manual dumping, some foam stock solution will inevitably be spilled, causing the soles of the workers to become slippery, which is very easy to cause damage to the work. Occupational accidents such as personnel accidentally falling from high altitudes greatly increase the hidden dangers and risks of operational safety.

In the prior art, it also involves a filling method. For example, the patent application number CN202022312657.5 proposes a liquid fertilizer filling equipment. For filling and watering, the filter bucket set inside can be used for filtering, but the function of this patent is relatively simple, and it can only realize the transfer and filling of the liquid through the water pump, and the filling work cannot be realized for the original liquid in barrels.

Contents of the invention

The invention provides a foam stock solution filling device for a fire truck, which can automatically fill a foam stock solution bucket into a fire truck through a lifting device, thereby improving the work efficiency of firefighters.

The device includes: a bottom mounting plate, a dumping mechanism, an adjusting mechanism, a water pump unit and an approaching mechanism;

One end of the bottom mounting plate is vertically installed with a vertical mounting plate; the two sides of the bottom mounting plate are respectively provided with the dumping mechanism;

The adjustment mechanism is arranged between two dumping mechanisms, and the dumping mechanism drives the adjustment mechanism to lift;

The water pump group is installed on the upper end of the vertical mounting plate, and the water pump group extracts the foam stock solution in the foam stock solution barrel;

The approaching mechanism is installed on the end face of the vertical mounting plate, and the device is brought close to the fire truck as a whole through the operation of the approaching mechanism.

It should be further noted that the tilting mechanism is provided with a lifting mounting plate, and a slide rail is arranged in the lifting mounting plate, and a fixed optical axis is installed on the upper surface of the bottom mounting plate, and the fixed optical axis is slidably connected to the sliding rail, so that the lifting installation The plate slides up and down along the fixed optical axis;

The lifting motor and the lower lifting wheel are installed on the lifting mounting plate, the first belt pulley is installed on the output shaft of the lifting motor, the lower lifting wheel is installed on the lower cross bar of the lifting mounting plate through the rotating shaft, and the rotating shaft of the lower lifting wheel is installed There are two second pulleys;

The driving belt is set on the first pulley and the second pulley, and the lifting motor drives the lower lifting wheel to rotate through the driving belt;

The front end of the vertical mounting plate is provided with a mounting seat on the vertical rod, and the two ends of the rotating screw are installed in the mounting seat. A fixed optical axis is arranged below the rotating screw. Coordinated installation, a third pulley is provided on both ends of the rotating lead screw, and the driven belt is set on the second pulley on the rotating shaft of the lifting wheel at the lower end and the third pulley provided on the outer end of the rotating lead screw;

When the lifting wheel at the lower end rotates, it drives the rotating screw to rotate;

The lower end of the mobile support bar is rotatably equipped with a track sliding wheel, which is slidably installed in the U-shaped track. When the mobile support bar moves outward, based on the existence of the U-shaped track, the lifting installation plate is driven to move upward, and the dumping mechanism is driven to rise. ;

The upper lifting wheel is rotatably installed on the upper end of the lifting mounting plate, the upper lifting wheel and the lower lifting wheel are covered with lifting belts, the lifting track is set on the inner edge of the lifting mounting plate, and the lifting pulley block is installed in the lifting track through pulley sliding;

When the lifting motor drives the lifting belt to move upward, the lifting pulley block moves with the lifting belt to lift the adjustment mechanism installed on the lifting pulley block. Drive the lifting mounting plate to move upwards to change the height of the lifting mounting plate.

It should be further explained that a compression spring is set on the fixed optical axis, the lower end of the compression spring is fixedly connected with the bottom mounting plate, and the upper end of the compression spring is connected with the lower end of the lifting mounting plate. When the lifting mounting plate moves up and down, the compression spring provides tension and elastic cushioning.

It should be further explained that the adjustment mechanism is provided with an adjustment mounting seat, the two sides of the adjustment mounting seat are fixedly installed on the inner surface of the lifting pulley block, and the height of the adjustment mounting seat changes with the movement of the lifting pulley block;

The clamping screw is rotatably installed above the adjustment mounting seat, and the rotating gear ring is fixedly installed under the clamping screw;

The adjusting motor base is fixedly installed on the adjusting mounting base, and the rotating motor is fixedly installed on the adjusting motor base through the front motor surface;

The adjusting gear is installed on the output shaft of the rotating motor, and the adjusting gear is engaged with the rotating gear ring, and the rotating motor drives the rotating gear ring to rotate through the adjusting gear;

One side of the upper end surface of the gear ring mounting seat is provided with a motor seat, and the other side is provided with a bearing seat;

The front motor surface of the clamping motor is fixedly installed on the motor base, the two ends of the fixed screw nut are provided with screw nuts, the clamping screw and the screw nut are installed together, and one end of the clamping screw is connected to the output of the clamping motor. The shaft is connected with the center of the shaft, and the other end of the clamping screw is installed on the bearing seat. When the clamping motor drives the clamping screw to rotate, it drives the clamping arc plate to move on the clamping screw, so that the clamping on both sides The arc plate shrinks or expands;

The foam stock solution barrel is arranged between the clamping arc plates, and the clamping and lowering action of the foam stock solution barrel is completed through the contraction and expansion of the clamping arc plates.

It should be further explained that the close mechanism is provided with a support mounting plate; the support mounting plate is installed in the gap of the vertical end surface of the vertical mounting plate, and the two ends of the support mounting plate are rotated to be provided with transmission pulleys, and the transmission belt is installed on the transmission pulleys on both sides. Close to the drive motor is installed on the motor mounting seat on the vertical mounting plate through the front motor surface, and a transmission belt is installed close to the output shaft of the drive motor;

The lifting gear and the transmission pulley are installed on the same axis. The lifting rack slides up and down on the vertical mounting plate through the guide rail set on the side. The lifting gear is installed in mesh with the lifting rack. The lifting gear drives the lifting rack to move up and down;

The upper and lower steel wire guide wheels are fixedly installed on the side of the lifting gear, and the tension steel wire passes through the wheel groove of the upper and lower steel wire guide wheels; the support installation plate is installed on the support installation plate through the rotating shaft, and the transmission belt drives the tension gear to rotate, and the tension rack is installed On the vertical mounting plate, the upper and lower ends of the tensioning gear are engaged with the tensioning rack respectively, and the tensioning gear drives the tensioning rack to move left and right;

The left and right steel wire guide wheels are rotatably installed on the outer end side of the tension rack, the tension arm is rotatably installed on the tension installation plate, and an elastic sheet is arranged between the tension installation plate and the connection surface of the tension arm;

The elastic sheet drives the tensioning arm to open outwards. The function of the elastic sheet is that when the tensioning arm is not pulled inwardly, the tensioning arm expands outwards, and the tensioning rack passes through the left and right wire guide wheels and the tensioning arm. The middle position connection of the support arm;

The tensioning steel wire pulls the tensioning arm inward; the lifting mounting plate is fixedly installed on the upper end of the lifting rack, and the lower end of the upper and lower mounting brackets is fixedly mounted on the upper end of the lifting mounting plate; the left and right steel wire guide wheels, tensioning mounting plate, pull The tight arm constitutes a tensioning mechanism for clamping on the fire truck when it is close to the fire truck.

It should be further explained that a plurality of non-slip soft contact pads are respectively provided on the tension rack and the upper and lower mounting frames. Frontal contact with the vehicle wall.

It should be further explained that the water pump unit is equipped with a dump tank, a liquid outlet installation frame, a liquid outlet pump and a cleaning water pipe;

The dumping tank is installed on the lifting mounting plate through the surrounding mounting brackets. The lower end of the middle part of the dumping tank is provided with a liquid outlet. The lower end of the liquid outlet mounting bracket is fixed on one side of the lifting mounting plate. Above, the liquid outlet pump is connected to the liquid outlet of the dumping tank, and one end of the liquid outlet pipe is connected to the liquid outlet of the liquid outlet pump;

When the foam stock solution is poured into the dumping tank, the liquid outlet pump works to pressurize and quickly transfer the foam stock solution in the dumping tank; the lower end of the cleaning water pipe bracket is fixedly installed on the other side of the lifting installation plate, and the cleaning water pipe is set on the cleaning water pipe When it is necessary to clean the dumping tank, the cleaning water enters the dumping tank from the lower end of the cleaning water pipe for cleaning;

Universal wheels are arranged below the bottom mounting plate to facilitate the movement of the bottom mounting plate device.

It should be further explained that it also includes: a control circuit;

The control circuit includes: microprocessor, pressure transmitter, electromagnetic flowmeter, liquid crystal display, voltage amplifying circuit, frequency converter, voltage relay KV1, voltage relay KV2, voltage relay KV3, voltage relay KV4, contactor KM1, Connect the contactor KM2, the rotary switch SA, the normally closed button switch SB1 and the normally open button switch SB2;

Pressure transmitter, electromagnetic flowmeter, liquid crystal display, voltage relay KV1 coil, voltage relay KV2 coil, voltage relay KV3 coil, voltage relay KV4 coil are respectively connected to the microprocessor;

The microprocessor is connected to the control terminal of the frequency converter through the voltage amplification circuit; the output terminal of the power supply terminal of the frequency converter and the normally open terminal of the voltage relay KV1 are respectively connected to the liquid outlet pump of the water pump group by connecting the normally open terminal of the contactor KM2;

The SA input terminal of the rotary switch is connected to the power supply; the normally open first terminal of the rotary switch SA is respectively connected to the normally open first terminal of the voltage relay KV1 and the normally open first terminal of the voltage relay KV2; the second terminal of the normally open rotary switch SA is respectively connected to the voltage relay KV1 Normally open the second end, connect the first end of the contactor KM1 coil and the first end of the normally closed button switch SB1;

The normally open second end of the voltage relay KV2 is respectively connected to the first end of the coil of the contactor KM2, the second end of the normally open button switch SB2, and the second end of the second end of the normally open end of the contactor KM2;

The second end of the normally closed button switch SB1 is respectively connected to the first end of the normally open end 2 of the contactor KM2 and the first end of the normally open button switch SB2;

Connect the second end of the KM1 coil of the contactor and the second end of the KM2 coil of the contactor to the neutral line respectively.

It should be further explained that it also includes: a single-chip microcomputer power supply circuit, a current detection circuit and a voltage detection circuit;

The single-chip microcomputer power supply circuit is connected with the microprocessor to supply power to the microprocessor;

The microprocessor detects the current data in the circuit by connecting with the current detection circuit;

The microprocessor is connected with the voltage detection circuit to detect the voltage data in the circuit.

The present invention also provides a method for filling the fire engine foam stock solution, the method comprising:

When the rotary switch SA is selected to the first end of normally open, use the LCD screen for local control mode;

Through pressure transmitter, electromagnetic flowmeter, frequency converter, current detection circuit and voltage detection circuit, the information of pipeline outlet pressure, flow rate, output frequency and operating state of the liquid pump is collected, and then displayed on the LCD screen by the microprocessor;

Select frequency conversion start on the LCD screen, the microprocessor controls the action of the voltage relay KV2, the action of the voltage relay KV3, disconnect the voltage relay KV1, connect the main line of the contactor KM2 and the inverter, disconnect and connect the contactor KM1, and discharge the liquid The water pump is connected to the frequency conversion voltage;

At the same time, the information collected by the pressure transmitter is combined with the constant voltage value set on the LCD screen to perform PID calculation, and the calculated value is linearly amplified to 10V voltage signal by D/A conversion and voltage amplification circuit, and then fed back to the inverter , so that the inverter controls the output frequency of the liquid pump to rise to the rated voltage according to the preset rising speed, and stabilize the frequency corresponding to the set pressure of the liquid pump;

When the liquid crystal display screen obtains the frequency conversion stop control command, the microprocessor controls the voltage relay KV2 and the voltage relay KV3 to be disconnected, and the voltage relay KV1 is connected, then the liquid outlet pump is connected to the power frequency voltage, and the system returns to the manual operation mode; through the LCD The button on the display screen can manually control the start and stop of the outlet pump;

Methods also include:

When the device is close to the wall of the fire truck, the microprocessor controls the driving motor to drive the transmission belt to rotate, so that the tensioning gear rotates and tightens the tensioning steel wire. At the same time, the tensioning racks on the upper and lower sides move inward, and the tensioning steel wire moves inward. Pull the tensioning arm to make the device stick to the outer wall of the fire truck, and then rotate the lifting motor to drive the foam stock solution bucket clamped on the adjustment mechanism upward, and at the same time change the height of the lifting installation plate to move the foam stock solution bucket to the dumping tank Nearby, the rotating motor drives the gear ring mounting seat to rotate, and adjusts the pouring mouth of the foam stock solution barrel, so that the pouring mouth is facing the pouring groove, and the pouring work is completed.

As can be seen from the above technical solutions, the present invention has the following advantages:

The invention can lift the foam stock solution bucket placed on the ground into the dumping tank by setting the lifting mechanism, so as to quickly replenish the foam stock solution of the fire truck;

The present invention adjusts the angle of the pouring port of the raw liquid barrel clamped on the adjusting mechanism by providing an adjusting mechanism, so that the pouring port faces the pouring tank, thereby improving the pouring quality;

The close mechanism of the present invention enables the device to be attached to the fire truck, further improving the working efficiency when dumping.

Description of drawings

In order to illustrate the technical solution of the present invention more clearly, the accompanying drawings that need to be used in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. As far as people are concerned, other drawings can also be obtained based on these drawings on the premise of not paying creative work.

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is a schematic diagram of the overall structure of another angle of the present invention;

Fig. 3 is the structural representation of U-shaped lifting structure of the present invention;

Fig. 4 is the structural representation of adjustment mechanism of the present invention;

Fig. 5 is the structural representation of water pump group of the present invention;

Fig. 6 is a schematic structural view of the proximity mechanism of the present invention;

Fig. 7 is the structural representation of tensioning mechanism of the present invention;

Fig. 8 is a control circuit diagram;

Fig. 9 is a step-down circuit diagram;

Fig. 10 is a current detection circuit diagram;

Figure 11 is a voltage detection circuit diagram.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings 1 to 7 in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. the embodiment. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In the fire engine foam stock solution filling device provided by the present invention, when a certain element or layer is said to be "on" another element or layer, and is "connected" or "coupled" to another element or layer, it may be directly on the Another element or layer may be directly connected or coupled to another element or layer, and intervening elements or layers may also be present. In contrast, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element or layer, there are no intervening elements or layers present. Like numbers refer to like elements throughout the drawings. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the fire engine foam stock solution filling device provided by the present invention, spatially relative terms that are convenient for description may be used here, such as "below", "below", "lower", "above", "above" and so on to describe The relationship of one element or feature to another element or feature as shown in the figures. It will be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. Other orientations (rotated 90 degrees or otherwise) may be used for the device, and the spatially relative terms used herein interpreted accordingly.

The terminology used in the fire truck foam stock solution filling device provided by the present invention is only used to describe specific embodiments, and is not intended to limit the expressions in this document. As used herein, the singular forms "a", "an" and "the" are intended to include plural forms unless the context clearly dictates otherwise. It should also be understood that when used in this specification, the term "comprising" refers to the presence of stated features, integers, steps, operations, elements and/or components, but does not exclude one or more other features, integers, steps , operations, elements, components and/or combinations thereof.

As shown in Figures 1 to 7, the fire engine foam stock solution filling device provided by the present invention includes: a bottom mounting plate 1, a dumping mechanism 3, an adjustment mechanism 4, a water pump group 5, and a close mechanism 6; one end of the bottom mounting plate 1 is installed vertically There is a vertical mounting plate 2; the two sides of the bottom mounting plate 1 are respectively provided with the dumping mechanism 3; the adjustment mechanism 4 is arranged between the two dumping mechanisms 3, and the dumping mechanism 3 drives the adjustment mechanism 4 to lift; the water pump group 5 is installed on The upper end of the vertical mounting plate 2, the pump group 5 extracts the foam stock solution in the foam stock solution bucket; the close mechanism 6 is installed on the end face of the vertical mounting plate 2, and the device is close to the fire truck as a whole by running close to the mechanism 6.

As the fire engine foam stock solution filling device provided in the present invention, the dumping mechanism 3 is provided with a lifting mounting plate 302, and a slide rail is arranged inside the lifting mounting plate 302, and a fixed optical axis is installed on the upper end surface of the bottom mounting plate 1. , the fixed optical axis is slidably connected to the slide rail, so that the lifting mounting plate 302 slides up and down along the fixed optical axis;

A lifting motor 303 and a lower end lifting wheel 311 are installed on the lifting mounting plate 302, and a first belt pulley is installed on the output shaft of the lifting motor 303, and the lower end lifting wheel 311 is installed on the lower end cross bar of the lifting mounting plate 302 by rotating the rotating shaft. Two second belt pulleys are housed on the rotating shaft of lifting pulley 311;

The driving belt 304 is set on the first pulley and the second pulley, and the lifting motor 303 drives the lower end lifting pulley 311 to rotate through the driving belt 304;

The front end vertical bar of the vertical mounting plate 2 is provided with a mounting seat, and the two ends of the rotating screw 306 are installed in the mounting seat in rotation, and a fixed optical axis 307 is arranged below the rotating screw 306, and the upper end of the moving support rod 308 passes through the screw. The nut is installed in cooperation with the rotating leading screw 306, and a third pulley is respectively arranged on the ends of both sides of the rotating leading screw 306, and the driven belt 305 is sleeved on the second pulley on the rotating shaft of the lower lifting pulley 311 and the outer end of the rotating leading screw 306. set on the third pulley;

When the lower lifting wheel 311 rotates, the rotating lead screw 306 is driven to rotate;

The lower end of the mobile support bar 308 is rotatably equipped with a track sliding wheel 310, and the track sliding wheel 310 is slidably installed in the U-shaped track 309. When the mobile support bar 308 moves outward, based on the existence of the U-shaped track 309, the lifting mounting plate 302 is driven. Move upwards to drive the dumping mechanism 3 to rise;

The upper lifting wheel 315 is rotatably mounted on the upper end of the lifting mounting plate 302, the upper lifting wheel 315 and the lower lifting wheel 311 are covered with a lifting belt 312, the lifting track 314 is arranged on the inner edge of the lifting mounting plate 302, and the lifting pulley block 313 slides through the pulley mounted within the lift rail 314;

When the lifting motor 303 drives the lifting belt 312 to move upwards, the lifting pulley block 313 moves with the lifting belt 312 to lift the adjustment mechanism 4 installed on the lifting pulley block 313, while the driven belt 305 drives the rotating screw 306 to rotate to drive the mobile support When the rod 308 moves to both sides, it drives the lifting mounting plate 302 to move upwards, changing the height of the lifting mounting plate 302, so that the device can meet the requirements of use during the process, and the height can be raised to facilitate the use of the device.

A compression spring 301 is set on the fixed optical axis, the lower end of the compression spring 301 is fixedly connected with the bottom mounting plate 1, and the upper end of the compression spring 301 is connected with the lower end of the lifting mounting plate 302. When the lifting mounting plate 302 moves up and down, the compression spring 301 Provides tension and cushioning.

As an embodiment of the present invention, the adjustment mechanism 4 is provided with an adjustment mounting seat 401, and the two sides of the adjustment mounting seat 401 are fixedly installed on the inner surface of the lifting pulley block 313, and the adjustment mounting seat 401 changes with the movement of the lifting pulley block 313. high;

The clamping screw 409 is rotatably installed above the adjustment mounting base 401, and the rotating gear ring 405 is fixedly installed below the clamping screw 409; the adjustment motor base 402 is fixedly installed on the adjustment mounting base 401, and the rotating motor 403 passes through the front motor The surface is fixedly installed on the adjusting motor seat 402; the adjusting gear 404 is installed on the output shaft of the rotating motor 403, and the adjusting gear 404 is engaged with the rotating gear ring 405 and installed, and the rotating motor 403 drives the rotating gear ring 405 to rotate through the adjusting gear 404;

One side of the upper end surface of the gear ring mounting seat 406 is provided with a motor seat, and the other side is provided with a bearing seat; the front end motor surface of the clamping motor 408 is fixedly installed on the motor seat, and the two ends of the fixed lead screw nut 410 are provided with lead screws Nut, the clamping screw 409 is installed with the screw nut, one end of the clamping screw 409 is connected with the output shaft of the clamping motor 408, and the other end of the clamping screw 409 is installed on the bearing seat, clamped When the motor 408 drives the clamping lead screw 409 to rotate, it drives the clamping arc plate 407 to move on the clamping lead screw 409, so that the clamping arc plates 407 on both sides shrink or expand; the foam stock solution bucket 411 is arranged on the clamping arc plate 407 in between, through the contraction and expansion action of the clamping arc plate 407, the action of clamping and putting down the foam stock solution bucket 411 is completed. It is convenient to fix the foam stock solution barrel 411 and also facilitate the disassembly and assembly of the foam stock solution barrel 411 .

Further speaking, the close mechanism 6 is provided with a support mounting plate 601; the support mounting plate 601 is installed in the gap of the vertical end surface of the vertical mounting plate 2, and the two ends of the support mounting plate 601 are rotated to be provided with a transmission pulley 604, and the transmission belt 603 is installed on both sides On the drive pulley 604, the drive motor 602 is installed on the motor mounting seat on the vertical mounting plate 2 through the front end motor surface, and the drive belt 603 is installed close to the drive motor 602 output shaft;

The lifting gear 605 is coaxially installed with the transmission pulley 604, and the lifting rack 606 is installed on the vertical mounting plate 2 by sliding up and down on the guide rail provided on the side. Moving up and down;

The upper and lower steel wire guide wheels 607 are fixedly installed on the side of the lifting gear 605, and the tension steel wire 608 passes through the wheel groove of the upper and lower steel wire guide wheels 607; the support installation plate 601 is installed on the support installation plate 601 through the rotating shaft, and the transmission belt 603 drives the tension gear 610 rotates, and the tension rack 609 is installed on the vertical mounting plate 2, and the upper and lower ends of the tension gear 610 are engaged with the tension rack 609 respectively, and the tension gear 610 drives the tension rack 609 to move left and right;

The left and right steel wire guide wheels 611 are rotatably installed on the outer end side of the tension rack 609, the tension arm 613 is rotatably installed on the tension mounting plate 612, and the tension mounting plate 612 and the tension support arm 613 connection surface are provided with Elastic sheet;

The elastic sheet drives the tensioning arm 613 to open outwards. The effect of the elastic sheet is that when the tensioning arm 613 is not subjected to an inward pulling force, the tensioning arm 613 expands outwards, and the tensioning rack 609 passes through the left and right steel wire guides. The wheel 611 is connected to the middle position of the tension arm 613;

The tension steel wire 608 pulls the tension support arm 613 inwardly; the lifting mounting plate 614 is fixedly installed on the upper end of the lifting rack 606, and the lower end of the upper and lower mounting frame 615 is fixedly mounted on the upper end surface of the lifting mounting plate 614; the left and right steel wire guide wheels 611 , the tensioning mounting plate 612, and the tensioning support arm 613 form a tensioning mechanism, which is used to be stuck on the fire truck when it is close to the fire truck. When the device is filling the foam stock solution, it can be close to the fire truck, which is convenient for the foam stock solution filling operation, reduces the workload, and improves the foam stock solution filling efficiency.

The tension rack 609 and the upper and lower mounting brackets 615 are respectively provided with a plurality of non-slip soft contact pads. When the tension steel wire 608 drives the tension support arm 613 to move inwards to clamp the outer wall of the fire truck, the non-slip soft contact pads will be in contact with the fire truck wall. positive contact. The friction force of the contact surface is increased, and the contact reliability is improved.

Play a soft contact with the outer wall of the fire truck, avoid damage to the outer wall of the fire truck, and also avoid collision damage to the device.

In the present invention, the water pump group 5 is provided with a dumping tank 501, a liquid outlet installation frame 502, a liquid outlet water pump 504 and a cleaning water pipe 505;

The pouring tank 501 is installed on the lifting installation plate 614 by the mounting brackets around it. The lower end of the middle part of the dumping tank 501 is provided with a liquid outlet. Installed on the liquid outlet mounting frame 502, the liquid outlet pump 504 is connected together with the liquid outlet of the pouring tank 501, and one end of the liquid outlet pipe 503 is connected with the liquid outlet of the liquid outlet pump 504; When the stock solution is foamed, the liquid outlet pump 504 works to pressurize and quickly transfer the foam stock solution in the dumping tank 501 ; Above, when the dumping tank 501 needs to be cleaned, the cleaning water enters the dumping tank 501 from the lower end of the cleaning water pipe 505 for cleaning; the lower part of the bottom mounting plate 1 is provided with universal wheels to facilitate the movement of the bottom mounting plate 1 device. The device moves to the filling position of the foam stock solution, which is also convenient for the mobile use of the device. There are brake pads on the universal wheels, which can prevent the trolley from moving due to the vibration of the pump when the liquid outlet pump is running.

In the present invention, as shown in Figures 8 to 11, the device also includes: a control circuit; the control circuit includes: a microprocessor, a pressure transmitter, an electromagnetic flowmeter, a liquid crystal display, a voltage amplifier circuit, a frequency converter, and a voltage relay KV1 , Voltage relay KV2, voltage relay KV3, voltage relay KV4, contactor KM1, contactor KM2, knob switch SA, normally closed button switch SB1 and normally open button switch SB2;

Pressure transmitter, electromagnetic flowmeter, liquid crystal display, voltage relay KV1 coil, voltage relay KV2 coil, voltage relay KV3 coil, voltage relay KV4 coil are respectively connected to the microprocessor;

The microprocessor is connected to the control terminal of the frequency converter through the voltage amplification circuit; the output terminal of the power supply terminal of the frequency converter and the normally open terminal of the voltage relay KV1 are respectively connected to the liquid outlet pump of the water pump group 5 by connecting the normally open terminal of the contactor KM2; the input of the rotary switch SA connected to the power supply; the normally open first end of the rotary switch SA is respectively connected to the normally open first end of the voltage relay KV1 and the normally open first end of the voltage relay KV2; the second end of the normally open rotary switch SA is respectively connected to the second normally open end of the voltage relay KV1 Connect the first end of the coil of the contactor KM1 and the first end of the normally closed button switch SB1; the second end of the normally open voltage relay KV2 is respectively connected with the first end of the coil of the contactor KM2 and the second end of the normally open button switch SB2, Connect the second end of the normally open end 2 of the contactor KM2; the second end of the normally closed button switch SB1 is respectively connected to the first end of the normally open end 2 of the contactor KM2 and the first end of the normally open button switch SB2; The second end of the KM1 coil of the contactor and the second end of the contactor KM2 coil are respectively connected to the neutral line.

Further speaking, the single-chip power supply circuit is connected with the microprocessor to supply power to the microprocessor; the microprocessor is connected with the current detection circuit to detect the current data in the circuit; the microprocessor is connected with the voltage detection circuit to detect the current data in the circuit. The voltage data; the microprocessor uses STM32F402032F.

When the liquid crystal displays are stacked on each other in layers to form a touch screen, the display unit can be used as an input device and an output device. The display unit may include a liquid crystal display (LCD, Liquid Crystal Display), a thin film transistor LCD (TFT-LCD, Thin Film Transistor-LCD), an organic light-emitting diode (OLED, Organic Light-Emitting Diode) display, a flexible display, a three-dimensional (3D) at least one of a display and the like. Some of these displays may be configured to be transparent to allow a user to view from the outside, which may be called a transparent display, and a typical transparent display may be, for example, a transparent organic light emitting diode (TOLED) display or the like.

The microprocessor can be implemented by using an application-specific integrated circuit (ASIC, Application Specific Integrated Circuit), a digital signal processor (DSP, Digital Signal Processing), a digital signal processing device (DSPD, Digital Signal Processing Device), a programmable logic device (PLD, Programmable Logic Device), Field Programmable Gate Array (FPGA, Field Programmable Gate Array), processor, controller, microcontroller, microprocessor, electronic unit designed to perform the functions described herein to implement , in some cases, such an implementation may be implemented in a controller. For software implementation, an embodiment such as a procedure or a function may be implemented with a separate software module that allows at least one function or operation to be performed. The software codes can be implemented by a software application (or program) written in any suitable programming language, stored in memory and executed by a controller.

In this way, the present invention can lift the foam stock solution barrel placed on the ground into the dumping tank by setting the lifting mechanism, and quickly replenish the foam stock solution of the fire truck; and the present invention can adjust the stock solution clamped on the adjustment mechanism The angle of the pouring mouth of the bucket is adjusted so that the pouring mouth is directly facing the dumping tank, which improves the quality of pouring; the close mechanism of the present invention enables the device to be attached to the fire truck, further improving the working efficiency when dumping.

Based on the above-mentioned device, the present invention also provides a method for filling the fire engine foam stock solution, the method comprising:

When the rotary switch SA is selected to the first end of normally open, use the LCD screen for local control mode;

Through pressure transmitter, electromagnetic flowmeter, frequency converter, current detection circuit and voltage detection circuit, the information of pipeline outlet pressure, flow rate, output frequency and operating state of the liquid pump is collected, and then displayed on the LCD screen by the microprocessor;

Select frequency conversion start on the LCD screen, the microprocessor controls the action of the voltage relay KV2, the action of the voltage relay KV3, disconnect the voltage relay KV1, connect the main line of the contactor KM2 and the inverter, disconnect and connect the contactor KM1, and discharge the liquid The water pump is connected to the frequency conversion voltage;

At the same time, the information collected by the pressure transmitter is combined with the constant voltage value set on the LCD screen to perform PID calculation, and the calculated value is linearly amplified to 10V voltage signal by D/A conversion and voltage amplification circuit, and then fed back to the inverter , so that the inverter controls the output frequency of the liquid pump to rise to the rated voltage according to the preset rising speed, and stabilize the frequency corresponding to the set pressure of the liquid pump;

When the liquid crystal display screen obtains the frequency conversion stop control command, the microprocessor controls the voltage relay KV2 and the voltage relay KV3 to be disconnected, and the voltage relay KV1 is connected, then the liquid outlet pump is connected to the power frequency voltage, and the system returns to the manual operation mode; through the LCD The button on the display screen can manually control the start and stop of the outlet pump;

Methods also include:

When the device is close to the wall of the fire truck, the drive belt 603 is driven to rotate by the microprocessor control drive motor 602, so that the tension gear 610 rotates to tighten the tension steel wire 608, and at the same time the tension racks 609 on the upper and lower sides move inwardly, The tension steel wire 608 pulls the tension support arm 613 inwardly, so that the device is attached to the outer wall of the fire truck, and then rotates through the lifting motor 303 to drive the foam stock solution bucket 411 clamped on the adjustment mechanism 4 upwards, and change the lifting installation plate 302 The height of the foam stock solution barrel 411 is moved to the vicinity of the dumping tank 501, and the rotating motor 403 drives the gear ring mounting seat 406 to rotate to adjust the pouring port of the foam stock solution barrel 411, so that the pouring port is facing the pouring tank 501, and the dumping work is completed.

In the method, the liquid outlet pump can be a self-priming pump. The self-priming pump is a water conservancy machine for pumping water, and is composed of a pump body, a junction box, a heat dissipation wind cover, a reinforced base, a water inlet and outlet, a liquid injection port, a water discharge port, and stainless steel connections. . In this way, the liquid outlet pump has the advantages of compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long life, and strong self-priming ability. There is no need to install a bottom valve in the pipeline, and it is only necessary to ensure that there is a quantitative suction liquid stored in the pump body before work.

As an embodiment, the outlet water pump adopts a pump body structure with axial liquid return. After the discharge water pump starts normally, the impeller will suck the liquid stored in the suction chamber and the air in the suction pipeline together, and they will be completely mixed in the impeller. White foam with a certain thickness is formed on the outer edge of the impeller and brought into the high-speed rotating liquid ring. The gas mixture enters the gas-liquid separation chamber through the diffusion tube. At this time, due to the sudden decrease of the flow rate, the lighter gas is separated from the gas-liquid mixture, and the gas continues to rise and discharge through the outlet of the pump body. The degassed liquid returns to the liquid storage chamber, and enters the impeller again through the return hole, mixes with the gas sucked from the suction pipe inside the impeller again, and flows to the outer edge of the impeller under the action of the high-speed rotating impeller. As this process goes on again and again, the air in the suction line is continuously reduced until the air is exhausted, the self-priming process is completed, and the pump is put into normal operation.

Considering that the extracted content is washing liquid products, among which the washing liquid products may be slightly corrosive, the pump body of the liquid outlet pump is made of 304 stainless steel pump head, which is integrally formed by precision casting and high temperature quenching, and the flow part is made of stainless steel, as follows The stainless steel rotor and stainless steel impeller greatly reduce the damage of corrosive liquid.

The liquid outlet pump adopts a high-efficiency heat dissipation method to effectively dissipate the heat of the engine. Among them, the junction protection box is made of corrosion-resistant high-strength plastic material and insulating rubber is added inside. Among them, the heat dissipation mesh cover is made of wear-resistant, high-strength plastic to enhance the heat dissipation effect. Among them, the heat dissipation horizontal bar is installed on the periphery of the motor, and the heat dissipation capacity of the motor is increased when the motor is running at high speed, the temperature rise is low, and the machine is not burned.

The liquid outlet pump adopts a large copper coil, built-in thermal protector, power off when over temperature, large copper coil. The liquid suction water pipe involved in the present invention can adopt the liquid suction hose, which can easily insert the water pipe into the barrel, and the water outlet pipe can be lifted and hung on the edge of the car body for easy loading and unloading.

In the present invention, photovoltaic MPPT charging mode, on-site remote control display mode, and various water pump detection and protection modes can be configured according to the needs of on-site use. The control system collects voltage signals, current signals, undervoltage signals, and overheating signals based on sensors and sampling circuits. And the liquid level signal to carry out the protection start and stop frequency conversion operation of the water pump. The device can realize the function of two-way communication with the upper computer through the RS-485 standard interface, so as to achieve the purpose of remote control.

In order to improve the convenience of the device, the device can be equipped with 24V battery, 220V inverter, step-down module, and solar panel. 24V battery, the electromotive force is relatively stable when discharging, the working voltage is stable, the operating temperature and operating current range are wide, it can charge and discharge hundreds of cycles, and the storage performance is good. It provides the necessary power for the control method and the water pump, and is an important component of the entire system. part.

The inverter has the characteristics of quick start and high conversion efficiency. It inverts the 24V DC voltage output by the battery into 220V AC voltage, effectively supplying power to the water pump.

The device can be equipped with a step-down module. The use of a step-down module can save development time and enable the product to be matured faster. Once there is a problem with the power supply system, only the problematic module needs to be replaced. Therefore, the power module is more expensive than the integrated circuit structure. have more advantages. The device uses a step-down module to change the 24V DC voltage into 5V voltage to supply power for the core control processing unit.

The device can use solar panels to charge the 24V storage battery, which can not only save costs, but also expand the application field, such as wilderness areas without electricity. There are many factors that affect the power supply efficiency of photovoltaic systems. One of the problems is how to make full use of electric energy and continue to use it. Since photovoltaic cells have a unique maximum power point in a certain external environment, the maximum power point tracking MPPT algorithm of photovoltaic cells can become An effective way to improve the conversion efficiency of photovoltaic cells can convert the electrical energy obtained by photovoltaic cells to the greatest extent.

The invention lifts the foam stock solution bucket into the dumping tank through the dumping device, which saves a lot of manpower and material resources and improves the work efficiency. The fire truck foam stock solution filling device provided by the present invention is the unit and algorithm steps of each example described in conjunction with the embodiments disclosed herein, and can be realized with electronic hardware, computer software or a combination of the two. In order to clearly illustrate the hardware and software interchangeability, the composition and steps of each example have been generally described in terms of functions in the above description. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

The terms "first", "second", "third" and "fourth" in the specification and claims of the present invention and the above drawings, if present, are used to distinguish similar objects and not necessarily to describe specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (7)

1. A fire truck foam concentrate filling device, comprising: the device comprises a bottom mounting plate (1), a dumping mechanism (3), an adjusting mechanism (4), a water pump group (5) and a closing mechanism (6);

one end of the bottom mounting plate (1) is vertically provided with a vertical mounting plate (2); the two sides of the bottom mounting plate (1) are respectively provided with the dumping mechanism (3);

the adjusting mechanism (4) is arranged between the two dumping mechanisms (3), and the dumping mechanisms (3) drive the adjusting mechanism (4) to lift;

the water pump set (5) is arranged at the upper end of the vertical mounting plate (2), the water pump set (5) is provided with a tilting groove (501), a liquid outlet mounting frame (502), a liquid outlet water pump (504) and a cleaning water pipe (505);

The pouring tank (501) is arranged on the lifting mounting plate (614) through a surrounding mounting frame, a liquid outlet is formed in the lower end of the middle part of the pouring tank (501), the lower end of the liquid outlet mounting frame (502) is fixedly arranged on one side of the lifting mounting plate (614), the liquid outlet pipe (503) is arranged on the liquid outlet mounting frame (502), the liquid outlet water pump (504) is connected with the liquid outlet of the pouring tank (501), and one end of the liquid outlet pipe (503) is connected with the liquid outlet of the liquid outlet water pump (504);

when the foam stock solution is poured into the pouring tank (501), the liquid outlet pump (504) works to quickly transfer the foam stock solution in the pouring tank (501) by pressurization; the lower end of the cleaning water pipe rack (506) is fixedly arranged on the other side of the lifting mounting plate (614), the cleaning water pipe (505) is arranged on the cleaning water pipe rack (506), and when the tilting trough (501) needs to be cleaned, cleaning water enters the tilting trough (501) from the lower end of the cleaning water pipe (505) for cleaning;

universal wheels are arranged below the bottom mounting plate (1), so that the movement of the bottom mounting plate (1) device is facilitated;

the approaching mechanism (6) is arranged on the end face of the vertical mounting plate (2), and the whole device is close to the fire truck through the operation of the approaching mechanism (6);

The dumping mechanism (3) is provided with a lifting mounting plate (302), a sliding rail is arranged in the lifting mounting plate (302), a fixed optical axis is arranged on the upper end face of the bottom mounting plate (1), and the fixed optical axis is connected into the sliding rail in a sliding manner, so that the lifting mounting plate (302) slides up and down along the fixed optical axis;

a lifting motor (303) and a lower end lifting wheel (311) are arranged on the lifting mounting plate (302), a first belt pulley is arranged on an output shaft of the lifting motor (303), the lower end lifting wheel (311) is rotatably arranged on a lower end cross rod of the lifting mounting plate (302) through a rotating shaft, and two second belt pulleys are arranged on the rotating shaft of the lower end lifting wheel (311);

the driving belt (304) is sleeved on the first belt pulley and the second belt pulley, and the lifting motor (303) drives the lower lifting wheel (311) to rotate through the driving belt (304);

the front end vertical rod of the vertical mounting plate (2) is provided with a mounting seat, two ends of a rotating screw rod (306) are rotatably mounted in the mounting seat, a fixed optical axis (307) is arranged below the rotating screw rod (306), the upper end of a movable supporting rod (308) is mounted in a matched manner with the rotating screw rod (306) through screw nuts, two side end parts of the rotating screw rod (306) are respectively provided with a third belt pulley, and a driven belt (305) is sleeved on a second belt pulley on the rotating shaft of a lower end lifting wheel (311) and the third belt pulley arranged at the outer end of the rotating screw rod (306);

The lower end lifting wheel (311) rotates and drives the rotating screw rod (306) to rotate;

the lower end of the movable supporting rod (308) is rotatably provided with a rail sliding wheel (310), the rail sliding wheel (310) is slidably arranged in the U-shaped rail (309), and the movable supporting rod (308) drives the lifting mounting plate (302) to move upwards and drives the dumping mechanism (3) to ascend based on the existence of the U-shaped rail (309) while moving outwards;

the upper end lifting wheel (315) is rotatably arranged at the upper end part of the lifting mounting plate (302), lifting belts (312) are sleeved on the upper end lifting wheel (315) and the lower end lifting wheel (311), lifting rails (314) are arranged at the inner side edges of the lifting mounting plate (302), and lifting pulley blocks (313) are slidably arranged in the lifting rails (314) through pulleys;

when the lifting motor (303) drives the lifting belt (312) to move upwards, the lifting pulley block (313) moves along with the lifting belt (312) and is used for lifting the adjusting mechanism (4) arranged on the lifting pulley block (313), meanwhile, the driven belt (305) drives the rotating screw rod (306) to rotate, the movable supporting rod (308) is driven to move towards two sides, and meanwhile, the lifting mounting plate (302) is driven to move upwards, so that the height of the lifting mounting plate (302) is changed;

The close mechanism (6) is provided with a support mounting plate (601); the support mounting plate (601) is arranged in a gap of the vertical end face of the vertical mounting plate (2), two ends of the support mounting plate (601) are rotatably provided with driving pulleys (604), a driving belt (603) is arranged on the driving pulleys (604) on two sides, a close driving motor (602) is arranged on a motor mounting seat on the vertical mounting plate (2) through a front motor face, and a driving belt (603) is arranged close to an output shaft of the driving motor (602);

the lifting gear (605) and the driving belt wheel (604) are coaxially arranged, the lifting rack (606) is arranged on the vertical mounting plate (2) in a sliding way up and down through a guide rail arranged on the side face, the lifting gear (605) is meshed with the lifting rack (606), and the lifting gear (605) drives the lifting rack (606) to move up and down;

the upper and lower steel wire guide wheels (607) are fixedly arranged on the side surfaces of the lifting gears (605), and the tensioning steel wires (608) penetrate through wheel grooves of the upper and lower steel wire guide wheels (607); the support mounting plate (601) is mounted on the support mounting plate (601) through a rotating shaft, the transmission belt (603) drives the tensioning gear (610) to rotate, the tensioning rack (609) is mounted on the vertical mounting plate (2), the upper end and the lower end of the tensioning gear (610) are respectively mounted in a meshed mode with the tensioning rack (609), and the tensioning gear (610) drives the tensioning rack (609) to move left and right;

The left steel wire guide wheel (611) and the right steel wire guide wheel are rotatably arranged at the outer end side of the tensioning rack (609), the tensioning support arm (613) is rotatably arranged on the tensioning mounting plate (612), and an elastic sheet is arranged between the connecting surface of the tensioning mounting plate (612) and the tensioning support arm (613);

the elastic sheet drives the tensioning support arm (613) to open outwards, and the elastic sheet has the function that when the tensioning support arm (613) is not subjected to inward tension, the tensioning support arm (613) expands outwards, and the tensioning rack (609) passes through the left steel wire guide wheel (611) and the right steel wire guide wheel to be connected with the middle position of the tensioning support arm (613);

the tensioning steel wire (608) pulls the tensioning support arm (613) inwards; the lifting mounting plate (614) is fixedly arranged at the upper end part of the lifting rack (606), and the lower ends of the upper mounting frame (615) and the lower mounting frame are fixedly arranged on the upper end surface of the lifting mounting plate (614); the left steel wire guide wheel (611), the right steel wire guide wheel, the tensioning mounting plate (612) and the tensioning support arm (613) form a tensioning mechanism, and are used for being clamped on a fire engine when being close to the fire engine.

2. The fire truck foam concentrate filling device of claim 1, wherein,

the fixed optical axis is sleeved with a compression spring (301), the lower end of the compression spring (301) is fixedly connected with the bottom mounting plate (1), the upper end of the compression spring (301) is connected with the lower end of the lifting mounting plate (302), and when the lifting mounting plate (302) moves up and down, the compression spring (301) provides tension and buffer elastic force.

3. The fire truck foam concentrate filling device of claim 1, wherein,

the adjusting mechanism (4) is provided with an adjusting installation seat (401), two sides of the adjusting installation seat (401) are fixedly arranged on the inner side surface of the lifting pulley block (313), and the adjusting installation seat (401) changes the height along with the movement of the lifting pulley block (313);

the clamping screw (409) is rotatably arranged at the upper position of the adjusting installation seat (401), and the rotating toothed ring (405) is fixedly arranged below the clamping screw (409);

the adjusting motor seat (402) is fixedly arranged on the adjusting installation seat (401), and the rotating motor (403) is fixedly arranged on the adjusting motor seat (402) through a front-end motor surface;

the adjusting gear (404) is arranged on an output shaft of the rotating motor (403), the adjusting gear (404) is meshed with the rotating toothed ring (405), and the rotating motor (403) drives the rotating toothed ring (405) to rotate through the adjusting gear (404);

one side of the upper end surface of the toothed ring mounting seat (406) is provided with a motor seat, and the other side is provided with a bearing seat;

the front end motor surface of the clamping motor (408) is fixedly arranged on the motor base, screw nuts are arranged at two ends of the fixed screw nut (410), a clamping screw (409) is arranged in a matched mode with the screw nuts, one end of the clamping screw (409) is connected with an output shaft of the clamping motor (408) in a coaxial mode, the other end of the clamping screw (409) is arranged on the bearing base, the clamping motor (408) drives the clamping screw (409) to rotate and simultaneously drives the clamping arc plates (407) to move on the clamping screw (409), and the clamping arc plates (407) at two sides are contracted or expanded;

The foam raw liquid barrel (411) is arranged between the clamping arc plates (407), and the clamping and putting down actions of the foam raw liquid barrel (411) are completed through the contraction and expansion actions of the clamping arc plates (407).

4. The fire truck foam concentrate filling device of claim 3, wherein,

a plurality of anti-slip soft contact pads are respectively arranged on the tensioning rack (609) and the upper and lower mounting frames (615), and the anti-slip soft contact pads are in front contact with the wall of the fire truck when the tensioning steel wire (608) drives the tensioning support arm (613) to move inwards to clamp the outer wall of the fire truck.

5. The fire truck foam concentrate filling device of claim 1, wherein,

further comprises: a control circuit;

the control circuit includes: microprocessor, pressure transmitter, electromagnetic flowmeter, liquid crystal display, voltage amplifying circuit, converter, voltage relay KV1, voltage relay KV2, voltage relay KV3, voltage relay KV4, contactor KM1, contactor KM2, knob switch SA, normally closed button switch SB1 and normally open button switch SB2;

the pressure transmitter, the electromagnetic flowmeter, the liquid crystal display screen, the voltage relay KV1 coil, the voltage relay KV2 coil, the voltage relay KV3 coil and the voltage relay KV4 coil are respectively connected with the microprocessor;

The microprocessor is connected with the control end of the frequency converter through the voltage amplifying circuit; the output end of the power supply end of the frequency converter and the normally open end I of the voltage relay KV1 are respectively connected to a liquid outlet water pump of the water pump group (5) through the normally open end I of the contact KM 2;

the SA input end of the knob switch is connected with a power supply; the normally open first end of the knob switch SA is respectively connected with the normally open first end of the voltage relay KV1 and the normally open first end of the voltage relay KV 2; the normally open second end of the knob switch SA is respectively connected with the normally open second end of the voltage relay KV1, the first end of the coil of the contactor KM1 and the first end of the normally closed knob switch SB 1;

the normally open second end of the voltage relay KV2 is respectively connected with the first end of the coil of the contact KM2, the second end of the normally open button switch SB2 and the second end of the normally open end of the contact KM 2;

the second end of the normally-closed button switch SB1 is respectively connected with the first end of the second normal-open end of the switch-on contactor KM2 and the first end of the normally-open button switch SB 2;

the second end of the coil of the contact KM1 and the second end of the coil of the contact KM2 are respectively connected with a zero line.

6. The fire truck foam concentrate filling device of claim 1, wherein,

further comprises: the single chip microcomputer power supply circuit, the current detection circuit and the voltage detection circuit;

The singlechip power supply circuit is connected with the microprocessor and supplies power to the microprocessor;

the microprocessor is connected with the current detection circuit to detect current data in the circuit;

the microprocessor is connected with the voltage detection circuit to detect voltage data in the circuit.

7. A fire truck foam concentrate filling method, characterized in that the method is applied to the fire truck foam concentrate filling device according to any one of claims 1 to 6;

the method comprises the following steps:

when the knob switch SA is selected to the normally open first end, a liquid crystal display screen is used for carrying out a local control mode;

collecting pipeline outlet pressure, flow, output frequency and running state parameter information of a liquid outlet pump through a pressure transmitter, an electromagnetic flowmeter, a frequency converter, a current detection circuit and a voltage detection circuit, and displaying the information on a liquid crystal display screen through a microprocessor;

selecting variable frequency starting on a liquid crystal display screen, controlling a voltage relay KV2 to act by a microprocessor, switching off a voltage relay KV1, switching on a main line of a contactor KM2 and a frequency converter, switching off the contactor KM1, and switching on variable frequency voltage by a liquid outlet pump;

meanwhile, PID operation is carried out by combining the information acquired by the pressure transmitter with a constant voltage value set on the liquid crystal display, the operation value is linearly amplified to a 10V voltage signal by a D/A conversion and voltage amplification circuit, and then the 10V voltage signal is fed back to the frequency converter, so that the frequency converter controls the output frequency of the liquid outlet pump to rise to a rated voltage according to a preset rising speed, and the liquid outlet pump is stabilized at a frequency corresponding to the set value pressure;

When the liquid crystal display screen acquires a frequency conversion stopping control instruction, the microprocessor controls the voltage relay KV2 and the voltage relay KV3 to be disconnected, the voltage relay KV1 is connected, the power frequency voltage of the liquid outlet pump is connected, and the system is restored to a manual operation mode; the starting and stopping of the liquid outlet pump are manually controlled through a button on the liquid crystal display screen;

the method further comprises the steps of:

when the device is close to the wall of a fire truck, a driving motor (602) is controlled by a microprocessor to drive a transmission belt (603) to rotate, a tensioning gear (610) is made to rotate to tighten a tensioning steel wire (608), simultaneously, tensioning racks (609) on the upper side and the lower side move inwards, the tensioning steel wire (608) pulls a tensioning support arm (613) inwards, the device is attached to the outer wall of the fire truck, then the lifting motor (303) is used for rotating, the height of a lifting mounting plate (302) is changed while a foam stock solution barrel (411) clamped on an adjusting mechanism (4) is driven to move upwards, the foam stock solution barrel (411) is made to move to the vicinity of a dumping groove (501), a toothed ring mounting seat (406) is driven to rotate by a rotating motor (403), and a dumping opening of the foam stock solution barrel (411) is adjusted, so that the dumping opening is opposite to the dumping groove (501) to finish dumping work.

Images