CN219963807U - Portable fire engine - Google Patents

Abstract

The utility model relates to the technical field of vehicles, and discloses a portable fire engine, which comprises: the four corners of the bottom surface of the vehicle body are provided with supporting wheels, and at least one movable wheel is arranged in the symmetrical plane of the bottom surface of the vehicle body; the balance system is used for detecting and adjusting the balance state of the vehicle body; the telescopic system is arranged between the vehicle body and the movable wheel and used for controlling the movable wheel to lift along the height direction so as to drive the chassis of the vehicle body to lift along the height direction; the folding system is arranged between the vehicle body and the supporting wheel and is used for controlling the supporting wheel to fold inwards or extend outwards; the fire-extinguishing rescue system comprises a telescopic scaling ladder and a fire-extinguishing rescue table; the control device, the balance system, the telescopic system, the folding system and the fire-extinguishing rescue system are all in signal connection with the control device. The chassis of the vehicle body can be lifted, the supporting wheels on the periphery are taken into the vehicle body, the actual width of the vehicle body is reduced, the vehicle smoothly passes through a narrow road bridge, the road adaptability is strong, the vehicle can rapidly reach a fire scene, and the fire rescue delay condition is improved.

Description

Portable fire engine

Technical Field

The utility model relates to the technical field of vehicles, in particular to a portable fire engine.

Background

The problems of traffic jam, road stenosis and the like seriously affect the road traffic capacity of the fire engine, so that a fire-fighting channel is blocked, the time for the fire engine to reach a fire scene is further delayed, and the life and property safety of a personnel door is directly affected.

In summary, how to enhance the road adaptability of the fire truck to reach the fire scene rapidly is a problem to be solved by those skilled in the art.

Disclosure of Invention

In view of the above, the utility model aims to provide a portable fire engine, which can raise the chassis of the engine body and collect the supporting wheels around the engine body into the engine body, so that the actual width of the engine body is effectively reduced, the engine can smoothly pass through narrow road bridges, crowded road sections and the like, has strong adaptability to roads, can rapidly reach a fire scene, and is beneficial to improving the fire rescue delay condition.

In order to achieve the above object, the present utility model provides the following technical solutions:

a portable fire engine, comprising:

the four corners of the bottom surface of the vehicle body are provided with supporting wheels, and at least one movable wheel is arranged in the symmetrical plane of the bottom surface of the vehicle body;

the balance system is used for detecting and adjusting the balance state of the vehicle body;

the telescopic system is arranged between the vehicle body and the movable wheel and is used for controlling the movable wheel to lift along the height direction so as to drive the chassis of the vehicle body to lift along the height direction;

the folding system is arranged between the vehicle body and the supporting wheel and is used for controlling the supporting wheel to fold inwards or extend outwards;

the fire-extinguishing rescue system comprises a telescopic scaling ladder and a fire-extinguishing rescue table;

and the balance system, the telescopic system, the folding system and the fire-extinguishing rescue system are all in signal connection with the control device.

Preferably, the balance system comprises a balance ball table, a balance sensor and a pressure adjusting component, wherein the balance sensor and the pressure adjusting component are in signal connection with the control device;

the center of the balance ball table is provided with at least one X-axis pressure ball and at least one Y-axis pressure ball, the X-axis pressure ball can move in the corresponding limit groove along the length direction of the vehicle body, and the Y-axis pressure ball can move in the corresponding limit groove along the width direction of the vehicle body;

after the X-axis pressure small ball or the Y-axis pressure small ball collides with the sensing button of the balance sensor, the balance sensor transmits corresponding collision pressure information to the control device;

the balance ball table is characterized in that inclined balls are arranged around the balance ball table, and are connected with the balance ball table through an inclination sensor arranged in a vertical inclined manner, a displacement sensor arranged along the X-axis direction and two pressure sensors arranged along the Y-axis direction, and the inclination sensor, the displacement sensor and the pressure sensors are connected with the control device through signals.

Preferably, the Y-axis pressure balls are arranged at the middle point of the balance ball table, and the two X-axis pressure balls are symmetrically distributed relative to the limit groove where the Y-axis pressure balls are located.

Preferably, the pressure regulating assembly comprises a transmission table, a multi-stage hydraulic rod and a pressure transmission column for applying pressure to the vehicle body, wherein the balance sensor, the inclination sensor, the displacement sensor and the pressure sensor are all in signal connection with the transmission table, the multi-stage hydraulic rod is in signal connection with the transmission table, and the output end of the multi-stage hydraulic rod is connected with the pressure transmission column.

Preferably, the telescopic system comprises a telescopic oil tank, a gear pump and at least one stage of telescopic oil cylinder, wherein the telescopic oil tank is connected with the gear pump and the telescopic oil cylinder through oil pipes.

Preferably, the folding system comprises a support column for connecting the support wheel with a support frame of the vehicle body, and the support column is hinged with the support frame;

a side stay bar is arranged between the support frame and the support column, and two ends of the side stay bar are respectively hinged with the support frame and the support column;

the hydraulic rod is arranged between the side stay bars and the support frame, and two ends of the hydraulic rod are respectively hinged with the middle part of the side stay bars and the support frame.

Preferably, the telescopic aerial ladder is connected with the top surface of the vehicle body through a multi-stage rotating arm, the multi-stage rotating arm comprises a primary rotating arm, a secondary rotating arm, a tertiary rotating arm, a quaternary rotating arm and a rotating table arranged on the top surface of the vehicle body, and the primary rotating arm is rotationally connected with the rotating table, so that the primary rotating arm can rotate around a Y axis relative to the vehicle body;

one end of the secondary rotating arm is hinged with the primary rotating arm, and the other end of the secondary rotating arm is hinged with the tertiary rotating arm through a universal joint, so that the tertiary rotating arm can rotate around a Z axis relative to the secondary rotating arm;

the other end of the quaternary rotating arm is hinged with the quaternary rotating arm, so that the quaternary rotating arm can rotate around an X axis relative to the tertiary rotating arm;

the other end of the four-stage rotating arm is connected with the telescopic scaling ladder.

Preferably, the vehicle further comprises a horizontal door opening device, and at least one stage of telescopic hydraulic door pushing rod is arranged between the vehicle body of the vehicle body and the vehicle door at the rear side of the vehicle body.

When the allowable passing width of the road is smaller than the width of the vehicle body, if a narrow road bridge, a crowded road section and the like are met, the control device controls the telescopic system to enable the chassis of the vehicle body to be lifted, controls the folding system to fold the surrounding supporting wheels inwards and store the supporting wheels into the vehicle, and effectively reduces the actual width of the vehicle body from the width of the vehicle body to the width of the movable wheels, so that the fire truck can smoothly pass through the narrow road section.

The balance system detects the balance state of the vehicle body in real time in the lifting, folding and passing processes of the vehicle body, and adjusts the vehicle body to restore the balance state when the vehicle body tilts.

Therefore, the portable fire engine provided by the utility model has strong adaptability to roads, can rapidly reach a fire scene, and is beneficial to improving the fire rescue delay condition.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a portable fire truck according to an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the telescoping system of FIG. 1 in an extended, collapsed configuration and with the horizontal door opener extended;

FIG. 4 is a schematic diagram of a balance system;

FIG. 5 is a schematic top view of FIG. 4;

FIG. 6 is a schematic structural view of a balancing table;

FIG. 7 is a schematic diagram of the detection principle of an inclined pellet;

FIG. 8 is a schematic diagram of the assembly of a pressure pellet within a balancing table;

FIG. 9 is a schematic view of the movement of the pressure pellet as the vehicle body is tilted;

FIG. 10 is a schematic diagram of a balance inductor;

FIG. 11 is a schematic structural view of a pressure regulating assembly;

FIG. 12 is a schematic view of a telescopic system;

FIG. 13 is a schematic cross-sectional view of a telescoping system;

FIG. 14 is a schematic view of a disc brake construction;

FIG. 15 is a schematic view of a folding system;

FIG. 16 is a schematic diagram of a fire rescue system;

FIG. 17 is a schematic view of a multi-stage rotary arm;

FIG. 18 is a schematic view of a fire rescue table;

FIG. 19 is a nozzle tip of the fire-fighting lance;

fig. 20 is a schematic structural view of a horizontal door opener.

In fig. 1-20:

10 is a vehicle body, 11 is a moving wheel, 12 is a supporting wheel, 13 is a supporting frame, and 14 is a balance supporting plate;

20 is a balance system, 21 is a balance ball table, 211 is an X-axis pressure ball, 212 is a Y-axis pressure ball, 213 is an inclined ball, 214 is a limit groove, 215 is a pressure sensor, 216 is a displacement sensor, 217 is an inclination sensor,

22 is a balance sensor, 221 is a sensing button,

231 is a pressure transmission column, 2311 is a buffer, 232 is a multi-stage hydraulic rod, 2321 is a primary pressure regulation rod, 2322 is a secondary pressure regulation rod, 2323 is a pressure column, and 233 is a transmission table;

30 is a telescopic system, 31 is a telescopic oil tank, 311 is an oil motor, 32 is a gear pump, 33 is a telescopic oil cylinder, 34 is a movable wheel steering motor, 35 is a disc brake, 351 is a fixed disc, and 352 is a rotary disc;

40 is a folding system, 41 is a supporting column, 411 is a shock absorber, 42 is a side supporting rod, 43 is a hydraulic rod, and 44 is a supporting wheel steering motor;

50 is a fire-extinguishing rescue system, 51 is a telescopic aerial ladder, 52 is a multi-stage rotating arm, 521 is a rotating table, 522 is a primary rotating arm, 523 is a secondary rotating arm, 524 is a universal joint, 525 is a tertiary rotating arm, 526 is a quaternary rotating arm, 527 is an auxiliary telescopic rod;

53 is a fire rescue table, 531 is a water tank, 532 is a booster pump, 533 is a water gun, 5331 is a rotary mounting arm;

60 is a horizontal door opener, 70 is a power system.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model has the core of providing a portable fire engine, which can raise the chassis of the vehicle body and collect the supporting wheels around the vehicle body, effectively reduces the actual width of the vehicle body, ensures that the vehicle can smoothly pass through narrow road bridges, crowded road sections and the like, has strong adaptability to roads, can quickly reach a fire scene, and is beneficial to improving the fire rescue delay condition.

Please refer to fig. 1-20.

In the present document, the X-axis direction refers to the longitudinal direction of the vehicle body 10, the Y-axis direction refers to the width direction of the vehicle body 10, and the Z-axis direction refers to the height direction of the vehicle body 10.

The utility model provides a portable fire engine, comprising:

the vehicle body 10, four corners of its bottom surface are equipped with the supporting wheel 12, and there is at least one that moves the wheel 11 in the symmetrical plane of its bottom surface;

a balancing system 20 for detecting and adjusting a balanced state of the vehicle body 10;

the telescopic system 30 is arranged between the vehicle body 10 and the movable wheels 11 and is used for controlling the movable wheels 11 to lift along the height direction so as to drive the chassis of the vehicle body 10 to lift along the height direction;

a folding system 40, disposed between the vehicle body 10 and the support wheels 12, for controlling the support wheels 12 to fold inwards or extend outwards;

a fire rescue system 50 comprising a telescopic aerial ladder 51 and a fire rescue table 53;

the control device, the balance system 20, the telescopic system 30, the folding system 40 and the fire-fighting and rescue system 50 are all in signal connection with the control device.

The body 10 is a main body structure of the fire truck, and the structure, shape and size of the body 10, and specific number, structure, shape, size and distribution of the moving wheels 11 and the supporting wheels 12 are determined according to the model of the fire truck in actual production and other factors with reference to the prior art, and are not described herein.

The telescopic system 30 is used for adjusting the chassis height of the vehicle body 10, and can integrally lift the fire truck by lifting the chassis of the vehicle body 10; to achieve adjustment of the chassis height of the vehicle body 10, the telescopic system 30 may be provided as a common linear power mechanism such as a hydraulic cylinder, an air cylinder, or the like.

The folding system 40 is used for collecting and releasing the supporting wheels 12 around the vehicle body 10, so that collision between the supporting wheels 12 and guardrails around roads and bridges can be avoided, and the center of gravity of the fire truck can be lowered, and the phenomenon that the balance state of the fire truck is influenced due to overhigh center of gravity when the fire truck passes through narrow roads and bridges can be avoided.

The folding system 40 can be provided with a link mechanism driven by common power mechanisms such as a hydraulic cylinder, an air cylinder and the like, and can be provided with a rotary power mechanism driven by the common power mechanisms such as the hydraulic cylinder, the air cylinder and the like; to prevent the folded support wheel 12 from falling down during operation of the vehicle, the folding system 40 may also be provided with corresponding stops.

The balance system 20 is used for monitoring the balance state of the vehicle body 10 in real time, and adjusting the balance state of the vehicle body 10 when the vehicle body 10 tilts so as to ensure that the fire truck safely passes through narrow road bridges and other road sections; one or more of a pressure sensor 215, a displacement sensor 216, and an inclination sensor 217 may be provided within the balance system 20 to accurately monitor the balance of the vehicle body 10.

The fire-fighting and rescue system 50 includes common fire-fighting equipment such as a telescopic aerial ladder 51, a fire-fighting and rescue table 53, a fire-fighting lance, a fire-fighting pump, and a fire extinguisher, and the specific types, models, and layouts thereof refer to the prior art, and are not described herein.

When the allowable passing width of the road is smaller than the width of the vehicle body, if a narrow road bridge is encountered, the control device controls the telescopic system 30 to enable the chassis of the vehicle body 10 to be lifted, controls the folding system 40 to fold the surrounding supporting wheels 12 inwards and store the supporting wheels into the vehicle, and at the moment, the actual width of the vehicle body 10 is changed from the width of the vehicle body to the width of the movable wheels, so that the actual width of the vehicle body is effectively reduced, and the fire fighting truck can pass through the road section smoothly.

During lifting, folding and passing of the vehicle body 10, the balancing system 20 detects the balance state of the vehicle body in real time, and adjusts the vehicle body 10 to restore the balance state when the vehicle body 10 is tilted.

In this embodiment, the telescopic system 30 and the folding system 40 can raise the chassis of the vehicle body 10 and collect the supporting wheels 12 around into the vehicle body 10, and the balance system 20 ensures the normal running of the vehicle in the chassis lifting state, so that the actual width of the vehicle is effectively reduced, the vehicle can smoothly pass through the narrow road bridge, the adaptability to the road is strong, the fire scene can be quickly reached, and the fire rescue delay condition is improved.

Preferably, the telescopic system 30 comprises a telescopic oil tank 31, a gear pump 32 and at least one stage of telescopic oil cylinder 33, and the telescopic oil tank 31 is connected with the gear pump 32 and the telescopic oil cylinder 33 through oil pipes. The telescopic system 30 adopts hydraulic transmission, and compared with mechanical transmission, the control is more stable, and the balance of the vehicle body 10 is maintained in the lifting process.

Referring to fig. 12 and 13, the telescopic system 30 includes a telescopic oil tank 31, a gear pump 32 and a three-stage telescopic oil cylinder, and an oil motor 311 is arranged in the telescopic oil tank 31;

the movable wheel 11 is arranged at the bottom of the three-stage telescopic oil cylinder through a movable wheel mounting bracket, a movable wheel steering motor 34 for driving the movable wheel 11 to steer is arranged in a movable wheel hub, and a disc brake 35 is arranged on a rotating shaft of the movable wheel 11.

When the chassis of the vehicle body 10 needs to be lifted, the oil motor 311 is controlled to be started, oil in the telescopic oil tank 31 flows into the gear pump 32 under the action of the oil motor 311, and the oil sequentially flows into the three-stage telescopic oil cylinders under the pressure of the gear pump 32, and the three-stage telescopic oil cylinders convert hydraulic energy into mechanical energy, so that the three-stage telescopic oil cylinders stretch step by step.

Referring to fig. 14, the disc brake 35 includes a fixed disc 351 arranged in a hollow manner and rotating discs 352 arranged at both sides of the fixed disc 351; the fixed disc 351 that the cavity set up can reduce the total weight of disc brake 35, is favorable to saving installation space, and the friction of the rotary disk 352 of both sides can make the movable wheel 11 brake soon, and braking effect is good.

On the basis of the above embodiment, the structure of the balance system 20 is defined, and the balance system 20 includes a balance table 21, a balance sensor 22 and a pressure adjusting component, where the balance sensor 22 and the pressure adjusting component are both in signal connection with the control device;

at least one X-axis pressure small ball 211 and at least one Y-axis pressure small ball 212 are arranged in the center of the balance ball table 21, the X-axis pressure small ball 211 can move in the corresponding limit groove 214 along the length direction of the vehicle body 10, and the Y-axis pressure small ball 212 can move in the corresponding limit groove 214 along the width direction of the vehicle body 10;

after the X-axis pressure ball 211 or the Y-axis pressure ball 212 collides with the sensing button 221 of the balance sensor 22, the balance sensor 22 transmits corresponding collision pressure information to the control device;

the periphery of the balance ball table 21 is provided with an inclined small ball 213, the inclined small ball 213 is connected with the balance ball table 21 through an inclination sensor 217 which is vertically inclined, a displacement sensor 216 which is arranged along the X-axis direction and two pressure sensors 215 which are arranged along the Y-axis direction, and the inclination sensor 217, the displacement sensor 216 and the pressure sensors 215 are all in signal connection with a control device.

Wherein, the X-axis pressure small ball 211 is used for detecting X-axis pressure along the length direction of the vehicle body by matching with the balance sensor 22, and the Y-axis pressure small ball 212 is used for detecting Y-axis pressure along the width direction of the vehicle body by matching with the balance sensor 22; the inclined ball 213 is used to detect the inclination of the periphery of the vehicle body 10, and further reflect the balance of the vehicle body 10, such as the inclination of the vehicle body 10 or the deviation of the vehicle body 10 from the extending direction of the road.

In order to make the detection points of the X-axis pressure ball 211 and the Y-axis pressure ball 212 coincide as much as possible, it is preferable to provide the Y-axis pressure ball 212 at the midpoint of the balance table 21, and the two X-axis pressure balls 211 are symmetrically distributed about the limit groove 214 where the Y-axis pressure ball 212 is located. The X-axis pressure at the Y-axis pressure pellet 212 is calculated using two X-axis pressure pellets 211 that are symmetrically distributed.

The inclined small balls 213 are arranged around the balance ball table 21, and the distribution positions of the inclined small balls correspond to the four supporting wheels 12 around the vehicle body 10; four inclined beads 213 are generally provided symmetrically distributed about the X-axis symmetry plane of the vehicle body 10, and four inclined beads 213 are provided symmetrically distributed about the Y-axis symmetry plane of the vehicle body 10.

The inclined ball 213 is connected to the balance ball table 21 through a plurality of sensors, the inclined ball 213 is provided with a displacement sensor 216 in the X-axis direction, and the displacement sensor 216 is used for detecting displacement of the inclined ball 213 in the X-axis direction;

the two ends of the inclined small ball 213 in the Y-axis direction are provided with pressure sensors 215, and the two pressure sensors 215 are used for detecting the stress of the inclined small ball 213 and judging the stress direction of the inclined small ball 213 according to the stress;

the tilt ball 213 is provided with a tilt sensor 217 in a vertical tilt direction, and the tilt sensor 217 is used to detect an azimuth angle and/or a tilt angle of the tilt ball 213 to obtain a minute displacement of the vehicle body 10 due to tilting or the like.

Taking the tilting ball 213 at the lower left of fig. 6 as an example, as shown in fig. 8, the horizontal projection of the tilt sensor 217 in the XOZ plane is OA, the angle α between the horizontal projection OA and the positive X-axis direction is the azimuth angle of the tilt sensor 217, and the angle β between the tilt sensor 217 and the horizontal projection OA is the tilt angle of the tilt sensor 217.

Assuming that the length of the tilt sensor 217 is d, the length of the horizontal projection OA is L _OA =dcos β, the length of projection OB of the horizontal projection OA in the Y-axis direction is

L _OB ＝dcosβ·cos(α-π/2)＝dcosβsinα，

The length of the projection OC of the horizontal projection OA in the X-axis direction is

L _OC ＝dcosβ·sin(α-π/2)＝-dcosβcosα。

When the vehicle body 10 deviates from the equilibrium state, the azimuth angle and the inclination angle of the inclination ball 213 measured by the inclination sensor 217 are α 'and β', from which the projection length L of the inclination sensor 217 in the X-axis direction and the Y-axis direction at this time can be calculated _OB' And L _OC' Further, displacements Δx and Δy, Δx=l of the inclined bead 213 in the X-axis direction and the Y-axis direction are obtained _OC' -L _OC ，Δy＝L _OB' -L _OB 。

Therefore, the inclination sensor 217 can measure the horizontal displacement of the inclined ball 213 through the change of the azimuth angle and the inclination angle, and when the micro displacement is greater than the preset displacement, the control device controls the pressure adjusting component to adjust the balance state of the vehicle body 10, and the preset displacement is determined according to the driving safety requirement during actual driving, which is not described herein.

Of course, the control amount may be replaced by the horizontal displacement amount of the tilt ball 213, the azimuth angle change amount and the inclination angle change amount of the tilt ball 213, and the like.

The displacement, azimuth angle, inclination angle, etc. of the inclined bead 213 measured by the displacement sensor 216, the pressure sensor 215, and the inclination angle sensor 217 may be verified with each other so as not to affect the measurement result by a single sensor failure or malfunction. In order to simplify the structure of the balancing table 21 and reduce the equipment cost, the number and types of sensors connected to the inclined beads 213 may be reduced as appropriate.

The pressure adjusting assembly is provided with a plurality of pressure transmitting columns 231 for pressing the vehicle body 10, and is used for reversely adjusting the vehicle body 10 to a balanced state according to the actual balance information of the vehicle body measured by various sensors.

For example, when the vehicle body 10 has a tendency to tilt forward, the pressure transmitting column 231 in the front wheel position is controlled to reduce the pressure to the vehicle body 10, and the pressure transmitting column 231 in the rear wheel position increases the pressure to the vehicle body 10;

conversely, when the vehicle body 10 tends to tilt backward, the pressure transmitting post 231 in the front wheel position is controlled to increase the pressure to the vehicle body 10, and the pressure transmitting post 231 in the rear wheel position decreases the pressure to the vehicle body 10.

Similarly, when the vehicle body 10 tends to tilt to the left or right, the pressure transmitting column 231 on the opposite side is controlled to increase the pressure to the vehicle body 10, and the pressure transmitting column 231 on the same side decreases the pressure to the vehicle body 10.

The pressure adjusting assembly may specifically be provided with a hydraulic assembly, an elastic pressure assembly, and the like, and preferably, referring to fig. 4, the pressure adjusting assembly includes a transmission table 233, a multi-stage hydraulic rod 232, and a pressure transmission column 231 for applying pressure to the vehicle body 10, where the balance sensor 22, the inclination sensor 217, the displacement sensor 216, and the pressure sensor 215 are all in signal connection with the transmission table 233, the multi-stage hydraulic rod 232 is in signal connection with the transmission table 233, and an output end of the multi-stage hydraulic rod 232 is connected with the pressure transmission column 231.

The transmission table 233 can be regarded as a balance system control device, and each sensor on the balance sensor 22 and the balance ball table 21 is connected with the transmission table 233 by signals, so that compared with the case that each sensor is connected with the multi-stage hydraulic rod 232 by signals through the control device as a master control, the signal transmission distance is shorter, the feedback time of the multi-stage hydraulic rod 232 is reduced, and the quick response of the multi-stage hydraulic rod 232 is realized.

After receiving and processing the information measured by the balance sensor 22 and the sensors on the balance table 21, the transmission table 233 transmits different pressure value information to the multi-stage hydraulic rod 232, and the multi-stage hydraulic rod 232 converts the hydraulic energy into mechanical energy and applies different pressures to the various parts of the vehicle body 10 through the pressure transmission column 231.

Referring to fig. 11, a multi-stage hydraulic rod 232 is provided with a first-stage pressure regulating rod 2321, a second-stage pressure regulating rod 2322 and a pressure column 2323 from top to bottom, wherein the first-stage pressure regulating rod 2321 is connected with the transmission table 233, and the pressure column 2323 is connected with the pressure transmission column 231;

the pressure transmission column 231 is installed in the installation hole of the balance support plate 14 of the vehicle body 10, and the pressure transmission column 231 is sleeved with a buffer 2311 for buffering and damping.

In this embodiment, the balancing table 21 and the balancing sensor 22 can detect the balance state of the vehicle body 10 in real time, and the pressure adjusting component can rapidly adjust the center of gravity accordingly when the center of gravity is unstable, so as to avoid the vehicle from toppling over or rushing out of the road during traveling and telescopic transformation, and ensure the driving safety.

On the basis of the above embodiment, the folding system 40 includes the support column 41 for connecting the support wheel 12 with the support frame 13 of the vehicle body 10, the support column 41 being hingedly connected with the support frame 13;

a side stay bar 42 is arranged between the support frame 13 and the support column 41, and two ends of the side stay bar 42 are respectively hinged with the support frame 13 and the support column 41;

a hydraulic rod 43 is arranged between the side stay rod 42 and the support frame 13, and two ends of the hydraulic rod 43 are respectively hinged with the middle part of the side stay rod 42 and the support frame 13.

Referring to fig. 15, the support frame 13 is H-shaped, the upper end of the support column 41 is hinged with a vertical rod at one side of the support frame 13, the lower end of the support column 41 is provided with a support wheel mounting frame for mounting the support wheel 12, and a support wheel steering motor 44 is arranged in the hub of the support wheel 12;

one end of the side stay bar 42 is hinged with a vertical rod at the other side of the support frame 13, and the other end of the side stay bar 42 is hinged with the middle part of the support column 41;

the fixed end of the hydraulic rod 43 is hinged with the cross rod of the support frame 13, and the free end of the hydraulic rod 43 is hinged with the middle part of the side support rod 42.

In the extended state, the hydraulic rod 43 is extended to make the support column 41 perpendicular to the cross bar of the support frame 13, and the support wheel 12 at the lower end of the support column 41 extends out of the vehicle body 10 and contacts with the road surface;

on the contrary, when the supporting wheel 12 needs to be stored, the hydraulic rod 43 is controlled to retract, and the hydraulic rod 43 drives the supporting column 41 to rotate towards the direction close to the supporting frame 13 through the side supporting rod 42, so that the supporting wheel 12 is stored in the vehicle body 10, and the running stability of the vehicle is improved.

Preferably, in order to reduce the impact between the supporting wheel 12 and the ground, the outer side of the supporting column 41 may be provided with a damper 411, and the specific type and size of the damper 411 are determined according to the magnitude of the ground contact impact force of the supporting wheel 12 in actual production, which is not described herein.

In this embodiment, the folding system 40 is hydraulically driven, the folding and overhanging process of the supporting wheel 12 is stable, and the oil of the hydraulic rod 43 can absorb the impact force generated by the supporting wheel 12 striking the ground when the supporting wheel 12 is extended, so as to be beneficial to keeping the vehicle body stable.

Referring to fig. 16, in order to save installation space, the telescopic aerial ladder 51 is composed of multiple stages of aerial ladders, a hydraulic rod is disposed between two adjacent stages of aerial ladders, and the hydraulic rod is used to push the two adjacent stages of aerial ladders to approach each other or to separate from each other, so as to achieve multiple stages of telescopic aerial ladders 51.

On the basis of the above embodiment, the telescopic aerial ladder 51 is connected with the top surface of the vehicle body 10 through the multi-stage rotating arm 52, the multi-stage rotating arm 52 comprises a primary rotating arm 522, a secondary rotating arm 523, a tertiary rotating arm 525, a quaternary rotating arm 526 and a rotating table 521 arranged on the top surface of the vehicle body 10, and the primary rotating arm 522 is rotatably connected with the rotating table 521, so that the primary rotating arm 522 can rotate around the Y axis relative to the vehicle body 10;

one end of the secondary rotating arm 523 is hinged with the primary rotating arm 522, and the other end of the secondary rotating arm 523 is hinged with the tertiary rotating arm 525 through a universal joint 524, so that the tertiary rotating arm 525 can rotate around the Z axis relative to the secondary rotating arm 523;

the other end of the tertiary rotating arm 525 is hinged with the quaternary rotating arm 526, so that the quaternary rotating arm 526 can rotate around the X axis relative to the tertiary rotating arm 525;

the other end of the four-stage swivel arm 526 is connected to the telescopic aerial ladder 51.

Referring to fig. 17, the primary rotation arm 522 can rotate around the Y axis relative to the vehicle body 10, the tertiary rotation arm 525 can rotate around the Z axis relative to the secondary rotation arm 523, and the quaternary rotation arm 526 can rotate around the X axis relative to the tertiary rotation arm 525, so that the multi-stage rotation arm 52 can drive the telescopic aerial ladder 51 to rotate around the X axis, the Y axis and the Z axis, and the telescopic aerial ladder 51 can rotate to a larger range.

In this embodiment, the telescopic scaling ladder 51 is connected with the top surface of the vehicle body 10 through the multi-stage rotating arm 52, and the multi-stage rotating arm 52 realizes the adjustment of the position and angle of the telescopic scaling ladder 51 in the three-dimensional direction, expands the rescue range of the telescopic scaling ladder 51, and meets the actual rescue requirement.

In addition, can set up multistage swinging boom 52 and controlling means signal connection, utilize the multistage swinging boom 52 of the intelligent regulation of controlling means at every stage's swinging boom, be favorable to transporting rescue personnel and supplies to the high altitude rescue position more accurately.

Preferably, in order to make the multi-stage rotating arm 52 have better supporting capability, an auxiliary telescopic rod 527 may be disposed between the rotating table 521 and the three-stage rotating arm 525, and the auxiliary telescopic rod 527, the first-stage rotating arm 522 and the second-stage rotating arm 523 form a trapezoid structure, so that the overall stability of the multi-stage rotating arm 52 is enhanced.

Referring to fig. 18, a fire-fighting and rescue table 53 is disposed on the top surface of the vehicle body 10, the fire-fighting and rescue table 53 includes a water tank 531, a booster pump 532 and a water gun 533, the booster pump 532 is used for pressurizing and conveying water in the water tank 531 to the water gun 533;

the water gun 533 is disposed on the fire rescue table 53 through a rotary mounting arm 5331, the rotary mounting arm 5331 is used for driving the water gun 533 to rotate around the X axis, the Y axis and the Z axis so as to expand the water spraying range of the water gun 533, and the specific structure of the rotary mounting arm 5331 can refer to the multi-stage rotary arm 52, which is not described herein again;

the nozzle array of the water gun 533 is provided with a plurality of honeycomb-shaped spray holes, and compared with the circular spray holes, the honeycomb-shaped spray holes can bear higher water pressure, so that the pressure-bearing upper limit of the water gun 533 is improved.

On the basis of the above embodiment, in order to facilitate the quick getting-off of the rescue workers, the portable fire truck further comprises a horizontal door opening device 60, and at least one stage of telescopic hydraulic door pushing rod is arranged between the head of the truck body 10 and the truck door of the truck body 10.

When a firefighter needs to get off the vehicle, the hydraulic door pushing rod is controlled to be rapidly extended, so that the vehicle door at the rear side of the vehicle body 10 is rapidly away from the vehicle body, and the firefighter can get off the vehicle rapidly through a gap between the hydraulic door pushing rod and the vehicle body.

The hydraulic door pushing rod is hydraulically driven and is powered by the same power as the power system 70 of the fire engine, so that installation space is saved, and meanwhile, compared with mechanical transmission, hydraulic transmission is more stable.

Referring to fig. 20, considering the balanced state of the vehicle, the upper and lower parts of the vehicle body 10 are provided with hydraulic pushrods; the specific number of the hydraulic door pushing rods and the length of each hydraulic door pushing rod are determined according to the actual production requirement, and are not repeated here.

It should be noted that, the first-stage pressure adjusting lever 2321 and the second-stage pressure adjusting lever 2322, and the first-stage rotating arm 522, the second-stage rotating arm 523, the third-stage rotating arm 525, and the fourth-stage rotating arm 526 are only used to distinguish the differences of the positions, and are not limited to the sequence.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.

The portable fire engine provided by the utility model is described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (8)

1. A portable fire engine, characterized by comprising:

the vehicle body (10) is provided with supporting wheels (12) at four corners of the bottom surface, and at least one movable wheel (11) is arranged in the symmetrical plane of the bottom surface;

-a balancing system (20) for detecting and adjusting the balance status of the vehicle body (10);

the telescopic system (30) is arranged between the vehicle body (10) and the movable wheel (11) and is used for controlling the movable wheel (11) to lift along the height direction so as to drive the chassis of the vehicle body (10) to lift along the height direction;

a folding system (40) arranged between the vehicle body (10) and the supporting wheel (12) and used for controlling the supporting wheel (12) to fold inwards or extend outwards;

the fire-extinguishing rescue system (50) comprises a telescopic aerial ladder (51) and a fire-extinguishing rescue table (53);

the balance system (20), the telescopic system (30), the folding system (40) and the fire-extinguishing rescue system (50) are all in signal connection with the control device.

2. The portable fire truck according to claim 1, characterized in that the balancing system (20) comprises a balancing ball table (21), a balancing inductor (22) and a pressure regulating assembly, both the balancing inductor (22) and the pressure regulating assembly being in signal connection with the control device;

the center of the balance ball table (21) is provided with at least one X-axis pressure ball (211) and at least one Y-axis pressure ball (212), the X-axis pressure ball (211) can move along the length direction of the vehicle body (10) in a corresponding limit groove (214), and the Y-axis pressure ball (212) can move along the width direction of the vehicle body (10) in the corresponding limit groove (214);

after the X-axis pressure small ball (211) or the Y-axis pressure small ball (212) collides with the sensing button (221) of the balance sensor (22), the balance sensor (22) transmits corresponding collision pressure information to the control device;

the balance ball table (21) is characterized in that the periphery of the balance ball table (21) is provided with an inclination ball (213), and the inclination ball (213) is connected with the balance ball table (21) through an inclination sensor (217) which is arranged in a vertical inclination manner, a displacement sensor (216) which is arranged along the X-axis direction and two pressure sensors (215) which are arranged along the Y-axis direction, and the inclination sensor (217), the displacement sensor (216) and the pressure sensors (215) are in signal connection with the control device.

3. The portable fire truck according to claim 2, characterized in that the Y-axis pressure pellets (212) are arranged at the midpoint of the balancing table (21), and the two X-axis pressure pellets (211) are symmetrically distributed with respect to the limit groove (214) in which the Y-axis pressure pellets (212) are located.

4. The portable fire truck according to claim 2, wherein the pressure regulating assembly comprises a transmission table (233), a multi-stage hydraulic rod (232) and a pressure transmission column (231) for applying pressure to the truck body (10), the balance sensor (22), the inclination sensor (217), the displacement sensor (216) and the pressure sensor (215) are all in signal connection with the transmission table (233), the multi-stage hydraulic rod (232) is in signal connection with the transmission table (233), and an output end of the multi-stage hydraulic rod (232) is connected with the pressure transmission column (231).

5. The portable fire truck according to any one of claims 1-4, wherein the telescopic system (30) comprises a telescopic oil tank (31), a gear pump (32) and at least one stage of telescopic oil cylinders (33), and the telescopic oil tank (31) is connected with the gear pump (32) and the telescopic oil cylinders (33) through oil pipes.

6. The portable fire truck according to any one of claims 1-4, characterized in that the folding system (40) comprises a support column (41) for connecting the support wheel (12) with a support frame (13) of the truck body (10), the support column (41) being hingedly connected with the support frame (13);

a side stay bar (42) is arranged between the support frame (13) and the support column (41), and two ends of the side stay bar (42) are respectively hinged with the support frame (13) and the support column (41);

a hydraulic rod (43) is arranged between the side stay bar (42) and the support frame (13), and two ends of the hydraulic rod (43) are respectively hinged with the middle part of the side stay bar (42) and the support frame (13).

7. The portable fire truck according to any one of claims 1-4, wherein the telescopic aerial ladder (51) is connected to the top surface of the truck body (10) through a multi-stage swivel arm (52), the multi-stage swivel arm (52) comprising a primary swivel arm (522), a secondary swivel arm (523), a tertiary swivel arm (525), a quaternary swivel arm (526) and a swivel table (521) provided on the top surface of the truck body (10), the primary swivel arm (522) being rotatably connected to the swivel table (521) such that the primary swivel arm (522) is rotatable about a Y-axis relative to the truck body (10);

one end of the secondary rotating arm (523) is hinged with the primary rotating arm (522), and the other end of the secondary rotating arm (523) is hinged with the tertiary rotating arm (525) through a universal joint (524), so that the tertiary rotating arm (525) can rotate around a Z axis relative to the secondary rotating arm (523);

the other end of the quaternary rotating arm (526) is hinged with the quaternary rotating arm (526) so that the quaternary rotating arm (526) can rotate around an X axis relative to the tertiary rotating arm (525);

the other end of the four-stage rotating arm (526) is connected with the telescopic aerial ladder (51).

8. The portable fire truck according to any one of claims 1-4, further comprising a horizontal door opening device (60), wherein at least one stage of telescopic hydraulic door pushing rod is arranged between the truck body of the truck body (10) and the truck door at the rear side of the truck body (10).