CN113911996A - Fire fighting truck foam stock solution filling device and method - Google Patents

Abstract

The invention provides a fire engine foam stock solution filling device and a fire engine foam stock solution filling method, which comprise the following steps: the bottom mounting plate, the dumping mechanism, the adjusting mechanism, the water pump set and the approaching mechanism are arranged on the bottom mounting plate; 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 mechanisms; the adjusting mechanism is arranged between the two dumping mechanisms, and the dumping mechanisms drive the adjusting mechanism to lift; the water pump set is arranged at the upper end of the vertical mounting plate and used for pumping foam stock solution in the foam stock solution barrel; the pressing close mechanism is installed on the end face of the vertical installation plate, and the pressing close mechanism operates to enable the device to be close to the fire engine integrally. According to the invention, the lifting mechanism is arranged to lift the foam stock solution barrel placed on the ground into the dumping groove, so that the foam stock solution of the fire fighting truck can be quickly supplemented; the approaching mechanism can enable the device to be attached to a fire engine, and further improves the working efficiency during dumping.

Description

Fire fighting truck foam stock solution filling device and method

Technical Field

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

Background

As is well known, fire fighting work is always an important work for normal and healthy operation of power systems. The foam water for fire fighting is prepared by mixing foam stock solution stored in a fire fighting truck and water in a certain proportion through an in-vehicle pipeline. But in order to ensure the quality of the foam stock solution stored in the fire engine and prevent the foam stock solution from being overdue and invalid and being incapable of being mixed with water to generate a large amount of foam. At regular intervals, the fire brigade in the station needs to replace the foam stock solution for the fire engine once.

In the prior art, when the foam stock solution in the fire engine needs to be replaced, a forklift is required to fork a huge stock solution barrel which is close to one meter high and has the weight of up to two hundred kilograms, then the huge stock solution barrel is lifted to the position above the fire engine which is close to three meters high, a plurality of firemen are assigned, the stock solution barrel is held by hands when the fire engine climbs to the roof, and the foam stock solution is slowly poured into the foam stock solution tank of the fire engine by manpower. The fire-fighting stock solution of the fire engine can be completely replaced only by repeatedly dumping ten barrels of the large stock solution barrel, and the process is undoubtedly time-consuming and labor-consuming. Moreover, the change process is still very dangerous, because the stoste bucket is very heavy, personnel's operation is got up very hard, and in addition the manual work is emptyd, and it has some foam stoste to avoid to spill, leads to operation personnel sole plane to become smooth, very easily so and causes operation accidents such as operation personnel high altitude mistake falls, greatly increases operation potential safety hazard and risk.

Among the prior art, still relate to a filling mode, for example application number CN 202022312657.5's patent has proposed a liquid fertilizer filling equipment, and this patent is through setting up the liquid fertilizer that the water pump mixes the staving and annotate the watering through watering pipe to liquid fertilizer, and the filter vat of inside setting can filter, but the function of this patent is more single, can only realize annotating the transfer of liquid through the water pump, can't realize the filling work to the stoste that becomes the bucket.

Disclosure of Invention

The invention provides a foam stock solution filling device of a fire fighting truck, which can automatically fill a foam stock solution barrel into the fire fighting truck through a lifting device, and improves the working efficiency of firemen.

The device comprises: the bottom mounting plate, the dumping mechanism, the adjusting mechanism, the water pump set and the approaching mechanism are arranged on the bottom mounting plate;

a vertical mounting plate is vertically mounted at one end of the bottom mounting plate; the two sides of the bottom mounting plate are respectively provided with the dumping mechanisms;

the adjusting mechanism is arranged between the two dumping mechanisms, and the dumping mechanisms drive the adjusting mechanism to lift;

the water pump set is arranged at the upper end of the vertical mounting plate and used for pumping foam stock solution in the foam stock solution barrel;

the pressing close mechanism is installed on the end face of the vertical installation plate, and the pressing close mechanism runs to enable the device to be close to the fire engine integrally.

It should be further noted that the dumping mechanism is provided with a lifting mounting plate, a slide rail is arranged in the lifting mounting plate, a fixed optical axis is arranged on the upper end surface of the bottom mounting plate, and the fixed optical axis is connected into the slide rail in a sliding manner, so that the lifting mounting plate slides up and down along the fixed optical axis;

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

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

the front end vertical rod of the vertical mounting plate is provided with a mounting seat, two ends of a rotating lead screw are rotatably mounted in the mounting seat, a fixed optical axis is arranged below the rotating lead screw, the upper end of a movable supporting rod is mounted in a matched manner with the rotating lead screw through a lead screw nut, the end parts of two sides of the rotating lead screw are respectively provided with a third belt pulley, and a driven belt is sleeved on a second belt pulley on the rotating shaft of the lower lifting wheel and the third belt pulley arranged at the outer end of the rotating lead screw;

the lower end lifting wheel rotates and simultaneously drives the rotating lead screw to rotate;

the lower end of the movable supporting rod is rotatably provided with a rail sliding wheel which is slidably arranged in the U-shaped rail, and the movable supporting rod moves outwards and drives the lifting mounting plate to move upwards and the dumping mechanism to ascend based on the existence of the U-shaped rail;

the upper end lifting wheel is rotatably arranged at the upper end part of the lifting mounting plate, the upper end lifting wheel and the lower end lifting wheel are sleeved with lifting belts, the lifting track is arranged at the inner side edge of the lifting mounting plate, and the lifting pulley block is slidably arranged in the lifting track through a pulley;

when the lifting motor drives the lifting belt to move upwards, the lifting pulley block moves along with the lifting belt and is used for lifting the adjusting mechanism arranged on the lifting pulley block, meanwhile, the driven belt drives the rotating lead screw to rotate, and the lifting mounting plate is driven to move upwards while the movable supporting rod is driven to move towards two sides, so that the height of the lifting mounting plate is changed.

It should be further noted that the fixed optical axis is sleeved with a compression spring, the lower end of the compression spring is fixedly connected with the bottom mounting plate, the upper end of the compression spring is connected with the lower end of the lifting mounting plate, and when the lifting mounting plate moves up and down, the compression spring provides tension and buffering elasticity.

It should be further noted that the adjusting mechanism is provided with an adjusting mounting seat, two sides of the adjusting mounting seat are fixedly mounted on the inner side surface of the lifting pulley block, and the adjusting mounting seat changes the height along with the movement of the lifting pulley block;

the clamping screw is rotatably arranged at the upper position of the adjusting mounting seat, and the rotating gear ring is fixedly arranged below the clamping screw;

the adjusting motor base is fixedly arranged on the adjusting installation base, and the rotating motor is fixedly arranged on the adjusting motor base through a front end motor surface;

the adjusting gear is arranged on an output shaft of the rotating motor, the adjusting gear is meshed 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 of the upper end surface of the gear ring mounting seat is provided with a bearing seat;

the front end motor surface of the clamping motor is fixedly arranged on the motor base, the two ends of the fixed lead screw nut are provided with lead screw nuts, the clamping lead screw and the lead screw nuts are arranged in a matched mode, one end of the clamping lead screw is coaxially connected with an output shaft of the clamping motor, the other end of the clamping lead screw is arranged on the bearing block, and the clamping motor drives the clamping lead screw to rotate and simultaneously drives the clamping arc plates to move on the clamping lead screw so that the clamping arc plates on the two sides shrink or expand;

the foam stock solution barrel is arranged between the clamping arc plates, and the clamping and putting down actions of the foam stock solution barrel are completed through the contraction and expansion actions of the clamping arc plates.

It is further noted that the approaching mechanism is provided with a supporting mounting plate; the supporting mounting plate is arranged in a gap of the vertical end surface of the vertical mounting plate, the two ends of the supporting mounting plate are rotatably provided with transmission belt wheels, a transmission belt is arranged on the transmission belt wheels on the two sides, a proximity driving motor is arranged on a motor mounting seat on the vertical mounting plate through a front end motor surface, and the transmission belt is arranged on the proximity driving motor output shaft;

the lifting gear and the transmission belt wheel are coaxially arranged, the lifting rack is vertically and slidably arranged on the vertical mounting plate through a guide rail arranged on the side surface, the lifting gear is meshed with the lifting rack, and the lifting gear drives the lifting rack to move up and down;

the upper and lower steel wire guide wheels are fixedly arranged on the side surfaces of the lifting gear, and the tensioning steel wire penetrates through wheel grooves of the upper and lower steel wire guide wheels; the support mounting plate is mounted on the support mounting plate through a rotating shaft, the transmission belt drives the tensioning gear to rotate, the tensioning rack is mounted on the vertical mounting plate, the upper end and the lower end of the tensioning gear are respectively meshed with the tensioning rack, and the tensioning gear drives the tensioning rack to move left and right;

the left and right steel wire guide wheels are rotatably arranged at the outer end side of the tensioning rack, the tensioning support arm is rotatably arranged on the tensioning mounting plate, and an elastic sheet is arranged between the tensioning mounting plate and the connecting surface of the tensioning support arm;

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

the tensioning steel wire pulls the tensioning support arm inwards; the lifting mounting plate is fixedly arranged at the upper end part of the lifting rack, and the lower ends of the upper and lower mounting frames are fixedly arranged on the upper end surface of the lifting mounting plate; the left and right steel wire guide wheels, the tensioning mounting plate and the tensioning support arm form a tensioning mechanism which is used for being clamped on a fire fighting truck when the fire fighting truck is close to.

It should be further explained that a plurality of anti-skidding soft contact pads are respectively arranged on the tensioning rack and the upper and lower mounting frames, and when the tensioning steel wire drives the tensioning support arm to move inwards to clamp the outer wall of the fire fighting truck, the anti-skidding soft contact pads are in front contact with the wall of the fire fighting truck.

It is further noted that the water pump group is provided with a dumping groove, a liquid outlet mounting frame, a liquid outlet water pump and a cleaning water pipe;

the pouring tank is arranged on the lifting mounting plate through the mounting frames on the periphery, a liquid outlet is arranged at the lower end of the middle part of the pouring tank, the lower end of the liquid outlet mounting frame is fixedly arranged on one side of the lifting mounting plate, the liquid outlet pipe is arranged on the liquid outlet mounting frame, the liquid outlet pump is connected with the liquid outlet of the pouring tank, and one end of the liquid outlet pipe is connected with the liquid outlet of the liquid outlet pump;

when the foam stock solution is poured into the pouring groove, the liquid outlet pump works to pressurize and quickly transfer the foam stock solution in the pouring groove; the lower end of the cleaning water pipe frame is fixedly arranged at the other side of the lifting mounting plate, the cleaning water pipe is arranged on the cleaning water pipe frame, and when the dumping groove needs to be cleaned, cleaning water enters the dumping groove from the lower end of the cleaning water pipe for cleaning;

the universal wheels are arranged below the bottom mounting plate, so that the bottom mounting plate device can be conveniently moved.

Further, it should be noted that the method further includes: a control circuit;

the control circuit includes: the device comprises a microprocessor, a pressure transmitter, an electromagnetic flowmeter, a liquid crystal display screen, a voltage amplifying circuit, a frequency converter, a voltage relay KV1, a voltage relay KV2, a voltage relay KV3, a voltage relay KV4, a switch-on contactor KM1, a switch-on contactor KM2, a knob switch SA, a normally closed button switch SB1 and a normally open button switch SB 2;

the pressure transmitter, the electromagnetic flowmeter, the liquid crystal display screen, the KV1 coil, the KV2 coil, the KV3 coil and the KV4 coil of the voltage relay 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 with a liquid outlet pump of the water pump set through the normally open end of the switch-on contactor KM 2;

the input end of the knob switch SA 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, and the first end of a coil of the contactor KM1 and the first end of a normally-closed button switch SB1 are connected;

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

the second end of the normally closed button switch SB1 is respectively connected with the first end of the normally open end II 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 switch-on contactor KM1 and the second end of the coil of the switch-on contactor KM2 are respectively connected with a zero line.

Further, it should be noted that the method further includes: 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 and is used for detecting current data in the circuit;

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

The invention also provides a fire engine foam stock solution filling method, which comprises the following steps:

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

the pressure transmitter, the electromagnetic flowmeter, the frequency converter, the current detection circuit and the voltage detection circuit are used for acquiring the outlet pressure, the flow, the output frequency and the running state parameter information of the liquid outlet pump of the pipeline, and then the running state parameter information is displayed on the liquid crystal display screen through the microprocessor;

the liquid crystal display screen is selected to be started in a frequency conversion mode, the microprocessor controls the action of a voltage relay KV2 and the action of a voltage relay KV3, the voltage relay KV1 is disconnected, a main line of a contactor KM2 and a frequency converter is connected, the contactor KM1 is disconnected, and the liquid outlet pump is connected with frequency conversion voltage;

meanwhile, information collected by the pressure transmitter is combined with a constant voltage value set on a liquid crystal display screen to perform PID operation, the operation value is linearly amplified to a 10V voltage signal through a D/A conversion and voltage amplification circuit and then fed back to the frequency converter, the frequency converter controls the output frequency of the liquid outlet pump to be increased to a rated voltage according to a preset increasing speed, and the liquid outlet pump is stabilized at a frequency corresponding to the set value pressure;

when the liquid crystal display screen obtains a frequency conversion stop control instruction, the microprocessor controls the voltage relay KV2 and the voltage relay KV3 to be disconnected, the voltage relay KV1 is switched on, the liquid outlet pump is switched on power frequency voltage, and the system is recovered to a manual operation mode; the start and stop of the liquid outlet pump are manually controlled by a button on the liquid crystal display screen;

the method further comprises the following steps:

when the device is pressed close to the fire engine wall, it rotates to press close to driving motor drive belt through microprocessor control, make taut gear rotate and tighten up taut steel wire, the taut rack of both sides is removed to the inboard about simultaneously, taut steel wire draws taut support arm to the inboard, make the device paste on the fire engine outer wall, then rotate through the elevator motor, the last tight foam raw liquid bucket of drive guiding mechanism is ascending simultaneously, change the height that promotes the mounting panel, make foam raw liquid bucket remove near the pouring groove, it rotates motor drive ring gear mount pad, adjust the pouring opening of foam raw liquid bucket, make the pouring opening just to the pouring groove, accomplish and empty work.

According to the technical scheme, the invention has the following advantages:

according to the invention, the lifting mechanism is arranged to lift the foam stock solution barrel placed on the ground into the dumping groove, so that the foam stock solution of the fire fighting truck can be quickly supplemented;

according to the invention, the adjusting mechanism is arranged, so that the angle of the pouring opening of the raw liquid barrel clamped on the adjusting mechanism is adjusted, the pouring opening is opposite to the pouring groove, and the pouring quality is improved;

the approaching mechanism can enable the device to be attached to a fire engine, and further improves the working efficiency during dumping.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of another embodiment of the present invention;

FIG. 3 is a schematic structural view of a U-shaped lifting structure according to the present invention;

FIG. 4 is a schematic structural diagram of an adjusting mechanism according to the present invention;

FIG. 5 is a schematic view of the structure of the water pump unit of the present invention;

FIG. 6 is a schematic view of a proximity mechanism according to the present invention;

FIG. 7 is a schematic structural view of the tightening mechanism of the present invention;

FIG. 8 is a control circuit diagram;

FIG. 9 is a voltage step-down circuit diagram;

FIG. 10 is a circuit diagram of current detection;

fig. 11 is a voltage detection circuit diagram.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to fig. 1 to 7 in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the fire engine foam concentrate filling apparatus provided by the present invention, when an element or layer is referred to as being "on" and "connected" or "coupled" to another element or layer, it may be directly on, connected or coupled to the other element or layer, or 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. 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 concentrate filling apparatus provided by the present invention, spatially relative terms such as "under …", "below", "lower", "above", "upper", and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to 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. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative terms used herein should be interpreted accordingly.

The terms used in the fire engine foam concentrate filling device provided by the invention are only used for describing specific embodiments, and are not intended to limit the description in this document. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

As shown in fig. 1 to 7, the fire fighting truck foam dope filling apparatus provided by the present invention comprises: the device comprises a bottom mounting plate 1, a dumping mechanism 3, an adjusting mechanism 4, a water pump set 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 mechanisms 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, and the water pump set 5 pumps foam stock solution in the foam stock solution barrel; press close to mechanism 6 and install on the terminal surface of perpendicular mounting panel 2, through press close to mechanism 6 operation, be close to the fire engine with the whole device.

As for the fire fighting truck foam stock solution filling device provided by the invention, the dumping mechanism 3 is provided with a lifting mounting plate 302, a sliding rail is arranged in the lifting mounting plate 302, the upper end surface of the bottom mounting plate 1 is provided with a fixed optical axis, 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 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 lifting wheel 311 is rotatably arranged on a lower 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 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;

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

the lower end lifting wheel 311 drives the rotating lead screw 306 to rotate while rotating;

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 when the movable supporting rod 308 moves outwards, the lifting mounting plate 302 is driven to move upwards based on the existence of the U-shaped rail 309, so that the dumping mechanism 3 is driven to ascend;

an upper lifting wheel 315 is rotatably mounted at the upper end of the lifting mounting plate 302, a lifting belt 312 is sleeved on the upper lifting wheel 315 and the lower lifting wheel 311, a lifting rail 314 is arranged at the inner side edge of the lifting mounting plate 302, and a lifting pulley block 313 is slidably mounted in the lifting rail 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 installed on the lifting pulley block 313, meanwhile, the driven belt 305 drives the rotating screw 306 to rotate, the movable supporting rod 308 is driven to move towards two sides, meanwhile, the lifting mounting plate 302 is driven to move upwards, the height of the lifting mounting plate 302 is changed, the device can meet the use requirement in the process, the height can be increased, and the device can be used conveniently.

And 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 buffering elasticity.

As an embodiment of the present invention, the adjusting mechanism 4 is provided with an adjusting mounting seat 401, two sides of the adjusting mounting seat 401 are fixedly mounted on an inner side surface of the lifting pulley block 313, and the adjusting mounting seat 401 changes 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 mounting seat 401, and the rotating toothed ring 405 is fixedly arranged below the clamping screw 409; the adjusting motor base 402 is fixedly arranged on the adjusting installation base 401, and the rotating motor 403 is fixedly arranged on the adjusting motor base 402 through a front end motor surface; the adjusting gear 404 is mounted on an output shaft of the rotating motor 403, the adjusting gear 404 is mounted in a meshed manner with the rotating toothed ring 405, and the rotating motor 403 drives the rotating toothed ring 405 to rotate through the adjusting gear 404;

a motor base is arranged on one side of the upper end surface of the gear ring mounting seat 406, and a bearing seat is arranged on the other side; the front end motor surface of the clamping motor 408 is fixedly installed on the motor base, the two ends of the fixed lead screw nut 410 are provided with lead screw nuts, the clamping lead screw 409 is installed in a matched mode with the lead screw nuts, one end of the clamping lead screw 409 is coaxially connected with an output shaft of the clamping motor 408, the other end of the clamping lead screw 409 is installed on a bearing block, the clamping motor 408 drives the clamping lead screw 409 to rotate, and meanwhile, the clamping arc plates 407 are driven to move on the clamping lead screw 409, so that the clamping arc plates 407 on the two sides are contracted or expanded; the foam raw liquid barrel 411 is arranged between the clamping arc plates 407, and the foam raw liquid barrel 411 is clamped and put down through the contraction and expansion actions of the clamping arc plates 407. Is convenient for fixing the foam raw liquid barrel 411 and is also convenient for dismounting the foam raw liquid barrel 411.

Further, the approaching mechanism 6 is provided with a supporting mounting plate 601; the supporting mounting plate 601 is arranged in a gap of the vertical end face of the vertical mounting plate 2, two ends of the supporting mounting plate 601 are rotatably provided with transmission belt wheels 604, a transmission belt 603 is arranged on the transmission belt wheels 604 at two sides, the driving motor 602 is arranged on a motor mounting seat on the vertical mounting plate 2 by being close to the front end motor face, and the transmission belt 603 is arranged close to the output shaft of the driving motor 602;

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

the upper and lower wire guide wheels 607 are fixedly arranged on the side surfaces of the lifting gear 605, and the tensioning wire 608 passes through the wheel grooves of the upper and lower wire guide wheels 607; the supporting mounting plate 601 is mounted on the supporting mounting plate 601 through a rotating shaft, the driving 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 meshed with the tensioning rack 609, and the tensioning gear 610 drives the tensioning rack 609 to move left and right;

the left and right wire guide wheels 611 are rotatably mounted on the outer end side of the tensioning rack 609, the tensioning arm 613 is rotatably mounted on the tensioning mounting plate 612, and an elastic sheet is arranged between the connecting surfaces of the tensioning mounting plate 612 and the tensioning arm 613;

the elastic piece drives the tensioning arm 613 to open outwards, the elastic piece has the function that when the tensioning arm 613 is not pulled inwards, the tensioning arm 613 expands outwards, and the tensioning rack 609 passes through the left and right wire guide wheels 611 to be connected with the middle position of the tensioning arm 613;

the tensioning wire 608 pulls the tensioning arm 613 inward; 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 and lower mounting frames 615 are fixedly arranged on the upper end surface of the lifting mounting plate 614; the left and right wire guide wheels 611, the tensioning mounting plate 612 and the tensioning support arm 613 form a tensioning mechanism, and are used for being clamped on a fire truck when approaching the fire truck. The device can press close to the fire engine when carrying out foam stoste filling, and the foam stoste filling operation of being convenient for alleviates work burden, provides foam stoste filling efficiency.

The tightening rack 609 and the upper and lower mounting racks 615 are respectively provided with a plurality of anti-skid soft contact pads, and when the tightening steel wire 608 drives the tightening support arm 613 to move inwards to clamp the outer wall of the fire fighting truck, the anti-skid soft contact pads are in contact with the front surface of the wall of the fire fighting truck. The friction force of the contact surface is increased, and the contact reliability is improved.

The device has the advantages that the device is in soft contact with the outer wall of the fire engine, the outer wall of the fire engine is prevented from being damaged, and the device is prevented from being damaged by collision.

In the invention, a water pump group 5 is provided with a pouring groove 501, a liquid outlet mounting rack 502, a liquid outlet water pump 504 and a cleaning water pipe 505;

the pouring tank 501 is mounted on the lifting mounting plate 614 through mounting frames on the periphery, a liquid outlet is formed in the lower end of the middle of the pouring tank 501, the lower end of the liquid outlet mounting plate 502 is fixedly mounted on one side of the lifting mounting plate 614, the liquid outlet pipe 503 is mounted on the liquid outlet mounting plate 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 water pump 504 works to pressurize and quickly transfer the foam stock solution in the pouring tank 501; the lower end of the washing water pipe rack 506 is fixedly arranged at the other side of the lifting mounting plate 614, the washing water pipe 505 is arranged on the washing water pipe rack 506, and when the pouring tank 501 needs to be washed, washing water enters the pouring tank 501 from the lower end of the washing water pipe 505 for washing; the universal wheel is arranged below the bottom mounting plate 1, so that the bottom mounting plate 1 can be conveniently moved, the device can be conveniently moved to a foam stock solution filling position, and the device can be conveniently moved for use. The universal wheel is provided with a brake pad, so that the trolley can be prevented from moving due to vibration of the water pump when the liquid outlet pump runs.

In the present invention, as shown in fig. 8 to 11, the apparatus further includes: a control circuit; the control circuit includes: the device comprises a microprocessor, a pressure transmitter, an electromagnetic flowmeter, a liquid crystal display screen, a voltage amplifying circuit, a frequency converter, a voltage relay KV1, a voltage relay KV2, a voltage relay KV3, a voltage relay KV4, a switch-on contactor KM1, a switch-on contactor KM2, a knob switch SA, a normally closed button switch SB1 and a normally open button switch SB 2;

the pressure transmitter, the electromagnetic flowmeter, the liquid crystal display screen, the KV1 coil, the KV2 coil, the KV3 coil and the KV4 coil of the voltage relay 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 with a liquid outlet pump of the water pump group 5 through the normally open end of the switch-on contactor KM 2; the input end of the knob switch SA 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, and the first end of a coil of the contactor KM1 and the first end of a normally-closed button switch SB1 are connected; the normally open second end of the voltage relay KV2 is connected with the first end of the coil of the switch-on contactor KM2, the second end of the normally open button switch SB2 and the second end of the normally open end of the switch-on contactor KM2 respectively; the second end of the normally closed button switch SB1 is respectively connected with the first end of the normally open end II 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 switch-on contactor KM1 and the second end of the coil of the switch-on contactor KM2 are respectively connected with a zero line.

Furthermore, the power supply circuit of the singlechip is connected with the microprocessor to supply power to the microprocessor; the microprocessor is connected with the current detection circuit and is used for detecting current data in the circuit; the microprocessor is connected with the voltage detection circuit and is used for detecting voltage data in the circuit; the microprocessor employs STM32F 402032F.

When the liquid crystal display panels are stacked on each other in the form of a layer to form a touch panel, the display unit may be used as an input device and an output device. The Display unit may include at least one of a Liquid Crystal Display (LCD), a Thin Film Transistor LCD (TFT-LCD), an Organic Light-Emitting Diode (OLED) Display, a flexible Display, a three-dimensional (3D) Display, and the like. Some of these displays may be configured to be transparent to allow a user to see from the outside, which may be referred to as transparent displays, and a typical transparent display may be, for example, a Transparent Organic Light Emitting Diode (TOLED) display or the like.

The microprocessor may be implemented using at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a processor, a controller, a microcontroller, a microprocessor, and an electronic unit designed to perform the functions described herein, and in some cases, such an implementation may be implemented in a controller. For a software implementation, the implementation such as a process or a function may be implemented with a separate software module that allows performing at least one function or operation. The software codes may be implemented by software applications (or programs) written in any suitable programming language, which may be stored in memory and executed by the controller.

Therefore, the foam stock solution barrel can be lifted to the dumping groove by arranging the lifting mechanism, and the foam stock solution of the fire fighting truck can be quickly supplemented; in addition, the adjusting mechanism is arranged, so that the angle of the pouring opening of the raw liquid barrel clamped on the adjusting mechanism is adjusted, the pouring opening is opposite to the pouring groove, and the pouring quality is improved; the approaching mechanism can enable the device to be attached to a fire engine, and further improves the working efficiency during dumping.

Based on the device, the invention also provides a fire fighting truck foam stock solution filling method, which comprises the following steps:

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

the pressure transmitter, the electromagnetic flowmeter, the frequency converter, the current detection circuit and the voltage detection circuit are used for acquiring the outlet pressure, the flow, the output frequency and the running state parameter information of the liquid outlet pump of the pipeline, and then the running state parameter information is displayed on the liquid crystal display screen through the microprocessor;

the liquid crystal display screen is selected to be started in a frequency conversion mode, the microprocessor controls the action of a voltage relay KV2 and the action of a voltage relay KV3, the voltage relay KV1 is disconnected, a main line of a contactor KM2 and a frequency converter is connected, the contactor KM1 is disconnected, and the liquid outlet pump is connected with frequency conversion voltage;

meanwhile, information collected by the pressure transmitter is combined with a constant voltage value set on a liquid crystal display screen to perform PID operation, the operation value is linearly amplified to a 10V voltage signal through a D/A conversion and voltage amplification circuit and then fed back to the frequency converter, the frequency converter controls the output frequency of the liquid outlet pump to be increased to a rated voltage according to a preset increasing speed, and the liquid outlet pump is stabilized at a frequency corresponding to the set value pressure;

when the liquid crystal display screen obtains a frequency conversion stop control instruction, the microprocessor controls the voltage relay KV2 and the voltage relay KV3 to be disconnected, the voltage relay KV1 is switched on, the liquid outlet pump is switched on power frequency voltage, and the system is recovered to a manual operation mode; the start and stop of the liquid outlet pump are manually controlled by a button on the liquid crystal display screen;

the method further comprises the following steps:

when the device is close to the wall of a fire fighting truck, a microprocessor controls a close driving motor 602 to drive a transmission belt 603 to rotate, so that a tensioning gear 610 rotates to tighten a tensioning steel wire 608, tensioning racks 609 on the upper side and the lower side move inwards at the same time, the tensioning steel wire 608 pulls a tensioning support arm 613 inwards to enable the device to be attached to the outer wall of the fire fighting truck, then a lifting motor 303 rotates to drive a foam raw liquid barrel 411 clamped on an adjusting mechanism 4 to move upwards and change the height of a lifting mounting plate 302 at the same time, so that the foam raw liquid barrel 411 moves to the vicinity of a pouring groove 501, the rotating motor 403 drives a toothed ring mounting seat 406 to rotate, a pouring opening of the foam raw liquid barrel 411 is adjusted, the pouring opening is enabled to face the pouring groove 501, and pouring work is completed.

In the method, the liquid outlet pump can adopt a self-sucking pump, the self-sucking pump is a hydraulic machine for pumping water and consists of a pump body, a junction box, a heat dissipation fan cover, a reinforcing base, a water inlet and outlet, a liquid injection port, a water outlet and stainless steel connection. Therefore, the liquid outlet pump has the advantages of compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long service life, stronger self-suction capability and the like. The pipeline does not need to be provided with a bottom valve, and only quantitative liquid guiding is required to be ensured to be stored in the pump body before work.

As an embodiment, the liquid outlet pump adopts a pump body structure with axial liquid return. After the liquid outlet pump is started normally, the liquid in the suction chamber and the air in the suction pipeline are sucked together by the impeller and are completely mixed in the impeller, the liquid carries the gas to flow towards the outer edge of the volute chamber under the action of centrifugal force, and white foam with a certain thickness is formed on the outer edge of the impeller and is carried into the high-speed rotating liquid ring. The gas mixture enters the gas-liquid separation chamber through the diffusion pipe, at the moment, light gas is separated from the mixed gas-liquid due to sudden reduction of the flow speed, and the gas continuously rises and is discharged through the discharge port of the pump body. The degassed liquid returns to the liquid storage chamber and enters the impeller again through the backflow hole, is mixed with the gas sucked from the suction pipeline inside the impeller again, and flows to the outer edge of the impeller again under the action of the impeller rotating at high speed. The process is repeated, the air in the suction pipeline is continuously reduced until the air is completely sucked, the self-suction process is completed, and the pump is put into normal operation.

Considering that the content of pumping is a washing liquid product, wherein the washing liquid product may have slight corrosiveness, a pump body of the liquid outlet pump adopts a 304 stainless steel pump head, the pump body is integrally formed by fine casting and high-temperature quenching, and overflowing parts are made of stainless steel materials, such as a stainless steel rotor and a stainless steel impeller, so that the invasion of corrosive liquid is greatly reduced.

The liquid outlet water pump adopts a high-efficiency heat dissipation mode, and heat of the engine is effectively dissipated. The wiring protection box is made of corrosion-resistant high-strength plastic materials, and insulating rubber is added inside the wiring protection box. Wherein the heat dissipation mesh enclosure is made of wear-resistant and high-strength plastic, so that the heat dissipation effect is enhanced. The heat dissipation horizontal bar is arranged on the periphery of the motor, so that the heat dissipation capacity of the motor is improved under the condition that the motor runs at a high speed, the temperature rise is low, and the motor is not burnt.

The liquid outlet pump adopts a full copper large coil, a built-in thermal protector and an over-temperature power-off mode, and the full copper large coil is adopted. The liquid pumping water pipe can adopt a liquid pumping hose, the liquid pumping hose can easily insert the water pipe into the barrel, and the water outlet pipe can be lifted by a person and hung on the edge of the vehicle body, so that the liquid pumping water pipe is convenient to assemble and disassemble.

According to the invention, a photovoltaic MPPT charging mode, a local remote control display mode and a plurality of water pump detection protection modes can be configured according to field use requirements, and a control system carries out protection start-stop frequency conversion operation on the water pump according to voltage signals, current signals, undervoltage signals, overheating signals and liquid level signals collected by a sensor and a sampling circuit. The device can realize the function of bidirectional communication with an upper computer through an RS-485 standard interface, thereby achieving the purpose of remote control.

In order to improve the convenience of the device, the device can be provided with a 24V storage battery, a 220V inverter, a voltage reduction module and a solar panel. The 24V accumulator has stable electromotive force during discharging, stable working voltage, wide range of use temperature and use current, capability of charging and discharging hundreds of cycles and good storage performance, provides a necessary power supply for a control method and a water pump, and is an important component of the whole system.

The inverter has the characteristics of quick start and high conversion efficiency, inverts the 24V direct-current voltage output by the storage battery into 220V alternating-current voltage, and effectively supplies power for the water pump.

The device can be equipped with the step-down module, adopts the step-down module can save development time, makes the product can be more mature to in case power supply system goes wrong, only need change the problem module, therefore the circuit structure of power module than the integrated form is more advantageous. The device adopts the step-down module to change 24V direct current voltage into 5V voltage, and supplies power for the core control processing unit.

The device can adopt the solar cell panel to charge the 24V storage battery, not only can save cost, but also can expand the application field, such as the area of the barren wilderness without electricity. The Maximum Power Point Tracking (MPPT) algorithm of the photovoltaic cell can become an effective way for improving the conversion efficiency of the photovoltaic cell, and can convert the electric energy obtained by the photovoltaic cell to the maximum extent.

According to the foam liquid pouring device, the foam liquid raw barrel is lifted into the pouring groove through the pouring device, so that a large amount of manpower and material resources are saved, and the working efficiency is improved. The fire engine foam concentrate filling apparatus provided by the present invention is the elements and algorithm steps of the examples described in connection with the embodiments disclosed herein, and can be implemented in electronic hardware, computer software, or a combination of both, and the components and steps of the examples have been generally described in the foregoing description in terms of functionality for clarity of illustration of interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation 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 non-exclusive inclusions.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to 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 (10)

1. The utility model provides a fire engine foam stoste filling device which characterized in that includes: 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);

a vertical mounting plate (2) is vertically mounted at one end of the bottom mounting plate (1); the two sides of the bottom mounting plate (1) are respectively provided with the dumping mechanisms (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), and the water pump set (5) pumps foam stock solution in the foam stock solution barrel;

press close to mechanism (6) and install on the terminal surface of perpendicular mounting panel (2), through press close to mechanism (6) operation, be close to the fire engine with the whole device.

2. The fire engine foam concentrate filling apparatus of claim 1,

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 mounted on the lifting mounting plate (302), a first belt pulley is mounted on an output shaft of the lifting motor (303), the lower end lifting wheel (311) is rotatably mounted on a lower end cross rod of the lifting mounting plate (302) through a rotating shaft, and two second belt pulleys are mounted 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 end lifting wheel (311) to rotate through the driving belt (304);

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

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

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), the movable supporting rod (308) moves outwards, meanwhile, the lifting mounting plate (302) is driven to move upwards based on the existence of the U-shaped rail (309), and the dumping mechanism (3) is driven to ascend;

the upper end lifting wheel (315) is rotatably arranged at the upper end part of the lifting mounting plate (302), a lifting belt (312) is sleeved on the upper end lifting wheel (315) and the lower end lifting wheel (311), the lifting track (314) is arranged at the inner side edge of the lifting mounting plate (302), and the lifting pulley block (313) is slidably arranged in the lifting track (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) installed 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, meanwhile, the lifting mounting plate (302) is driven to move upwards, and the height of the lifting mounting plate (302) is changed.

3. The fire engine foam concentrate filling apparatus of claim 2,

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 pulling force and buffering elastic force.

4. The fire engine foam concentrate filling apparatus of claim 2,

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

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

the adjusting motor base (402) is fixedly arranged on the adjusting installation base (401), and the rotating motor (403) is fixedly arranged on the adjusting motor base (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 gear ring (405), and the rotating motor (403) drives the rotating gear ring (405) to rotate through the adjusting gear (404);

a motor base is arranged on one side of the upper end surface of the gear ring mounting seat (406), and a bearing seat is arranged on the other side of the gear ring mounting seat;

the front end motor face of a clamping motor (408) is fixedly arranged on a motor base, two ends of a fixed lead screw nut (410) are provided with lead screw nuts, a clamping lead screw (409) is installed in a matched mode with the lead screw nuts, one end of the clamping lead screw (409) is coaxially connected with an output shaft of the clamping motor (408), the other end of the clamping lead screw (409) is installed on a bearing base, and the clamping motor (408) drives the clamping lead screw (409) to rotate and simultaneously drives a clamping arc plate (407) to move on the clamping lead screw (409) so that the clamping arc plates (407) on two sides shrink or expand;

the foam stock solution barrel (411) is arranged between the clamping arc plates (407), and the foam stock solution barrel (411) is clamped and put down through the contraction and expansion actions of the clamping arc plates (407).

5. The fire engine foam concentrate filling apparatus of claim 1 or 2,

the approaching mechanism (6) is provided with a supporting 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 transmission belt wheels (604), a transmission belt (603) is arranged on the transmission belt wheels (604) at two sides, a close driving motor (602) is arranged on a motor mounting seat on the vertical mounting plate (2) through a front end motor face, and the output shaft of the close driving motor (602) is provided with the transmission belt (603);

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

the upper and lower wire guide wheels (607) are fixedly arranged on the side surface of the lifting gear (605), and the tensioning wire (608) passes through the wheel grooves of the upper and lower wire guide wheels (607); the supporting mounting plate (601) is mounted on the supporting mounting plate (601) through a rotating shaft, a driving belt (603) drives a tensioning gear (610) to rotate, a 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 meshed with the tensioning rack (609), and the tensioning gear (610) drives the tensioning rack (609) to move left and right;

the left and right wire guide wheels (611) 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 surfaces of the tensioning mounting plate (612) and the tensioning support arm (613);

the elastic piece drives the tensioning support arm (613) to open outwards, the elastic piece has the function that when the tensioning support arm (613) is not subjected to the pulling force towards the inner side, the tensioning support arm (613) expands outwards, and the tensioning rack (609) passes through the left and right wire guide wheels (611) to be connected with the middle position of the tensioning support arm (613);

the tension wire (608) pulls the tension arm (613) inward; the lifting mounting plate (614) is fixedly mounted at the upper end part of the lifting rack (606), and the lower ends of the upper and lower mounting frames (615) are 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 for being clamped on a fire fighting truck when approaching the fire fighting truck.

6. The fire engine foam concentrate filling apparatus of claim 5,

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

7. The fire engine foam concentrate filling apparatus of claim 5,

the water pump set (5) is provided with a pouring 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 mounted on the lifting mounting plate (614) through mounting frames on the periphery, a liquid outlet is formed in the lower end of the middle of the pouring tank (501), the lower end of the liquid outlet mounting plate (502) is fixedly mounted on one side of the lifting mounting plate (614), the liquid outlet pipe (503) is mounted on the liquid outlet mounting plate (502), the liquid outlet 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 pump (504);

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

the universal wheels are arranged below the bottom mounting plate 1, so that the bottom mounting plate 1 can be conveniently moved.

8. The fire engine foam concentrate filling apparatus of claim 1,

further comprising: a control circuit;

the control circuit includes: the device comprises a microprocessor, a pressure transmitter, an electromagnetic flowmeter, a liquid crystal display screen, a voltage amplifying circuit, a frequency converter, a voltage relay KV1, a voltage relay KV2, a voltage relay KV3, a voltage relay KV4, a switch-on contactor KM1, a switch-on contactor KM2, a knob switch SA, a normally closed button switch SB1 and a normally open button switch SB 2;

the pressure transmitter, the electromagnetic flowmeter, the liquid crystal display screen, the KV1 coil, the KV2 coil, the KV3 coil and the KV4 coil of the voltage relay 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 with a liquid outlet pump of the water pump set (5) through connecting the normally open end of the contactor KM 2;

the input end of the knob switch SA 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, and the first end of a coil of the contactor KM1 and the first end of a normally-closed button switch SB1 are connected;

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

the second end of the normally closed button switch SB1 is respectively connected with the first end of the normally open end II 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 switch-on contactor KM1 and the second end of the coil of the switch-on contactor KM2 are respectively connected with a zero line.

9. The fire engine foam concentrate filling apparatus of claim 1 or 2,

further comprising: 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 and is used for detecting current data in the circuit;

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

10. A fire engine foam stock solution filling method is characterized by comprising the following steps:

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

the pressure transmitter, the electromagnetic flowmeter, the frequency converter, the current detection circuit and the voltage detection circuit are used for acquiring the outlet pressure, the flow, the output frequency and the running state parameter information of the liquid outlet pump of the pipeline, and then the running state parameter information is displayed on the liquid crystal display screen through the microprocessor;

the liquid crystal display screen is selected to be started in a frequency conversion mode, the microprocessor controls the action of a voltage relay KV2 and the action of a voltage relay KV3, the voltage relay KV1 is disconnected, a main line of a contactor KM2 and a frequency converter is connected, the contactor KM1 is disconnected, and the liquid outlet pump is connected with frequency conversion voltage;

meanwhile, information collected by the pressure transmitter is combined with a constant voltage value set on a liquid crystal display screen to perform PID operation, the operation value is linearly amplified to a 10V voltage signal through a D/A conversion and voltage amplification circuit and then fed back to the frequency converter, the frequency converter controls the output frequency of the liquid outlet pump to be increased to a rated voltage according to a preset increasing speed, and the liquid outlet pump is stabilized at a frequency corresponding to the set value pressure;

when the liquid crystal display screen obtains a frequency conversion stop control instruction, the microprocessor controls the voltage relay KV2 and the voltage relay KV3 to be disconnected, the voltage relay KV1 is switched on, the liquid outlet pump is switched on power frequency voltage, and the system is recovered to a manual operation mode; the start and stop of the liquid outlet pump are manually controlled by a button on the liquid crystal display screen;

the method further comprises the following steps:

when the device is close to the wall of a fire fighting truck, a driving belt (603) is driven to rotate by a close driving motor (602) under the control of a microprocessor, a tensioning gear (610) is enabled to rotate to tighten a tensioning steel wire (608), tensioning racks (609) on the upper side and the lower side move inwards at the same time, the tensioning steel wire (608) pulls a tensioning support arm (613) inwards to enable the device to be attached to the outer wall of the fire fighting truck, then a lifting motor (303) is enabled to rotate, the foam raw liquid barrel (411) clamped on an adjusting mechanism (4) is driven to move upwards while the height of a lifting mounting plate (302) is changed, the foam raw liquid barrel (411) is enabled to move to be close to a pouring groove (501), the rotating motor (403) drives a toothed ring mounting seat (406) to rotate, the pouring opening of the foam raw liquid barrel (411) is adjusted, the pouring opening is enabled to face to the pouring groove (501), and pouring work is completed.

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