B-type air foam high-jet fire extinguishing device

Abstract

The utility model discloses a B-type air foam high-jet fire extinguishing device, which relates to the technical field of fire fighting equipment, and comprises an arm rod of a lifting arm frame, a fire fighting spray pipe is arranged at the end part of the arm rod, a containing cavity is formed in the arm rod, and a shaft pipe unit movably penetrating through the containing cavity is fixedly communicated with the fire fighting spray pipe. The bottom end of the shaft tube unit communicates with a liquid supply pipe, a servo motor is fixedly arranged in the containing cavity and is in transmission connection with the shaft tube unit through a transmission mechanism, and the shaft tube unit is driven by the servo motor to generate angle deflection on the arm rod. According to the utility model, the fire-fighting spray pipe is rotatably mounted on the arm rod of the lifting arm frame through the shaft pipe unit, and the drive is in transmission connection with the shaft pipe unit through the transmission mechanism, so that the fire-fighting spray pipe can deflect around the axial direction of the shaft pipe unit, and the spray direction of the fire-fighting spray head can be accurately controlled; and the fire extinguishing speed is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to fire fighting equipment technical field, concretely is a kind of B class air foam high spray fire extinguishing device. BACKGROUND

[0002] Foam extinguishing agent has different foam types for different combustibles, for example, class A foam extinguishing agent is suitable for solid fires, such as wood, paper, etc., and class B foam extinguishing agent is suitable for liquid fires, such as gasoline, diesel, etc., in fire rescue, the foam is usually sprayed to the fire source direction by means of the corresponding foam high spray fire extinguishing device;

[0003] The existing foam high spray fire extinguishing device is mainly integrated and installed on a fire truck, for example, Chinese patent publication No. CN215691264U, the patent name is "a foam fire truck", the patent includes "chassis, box, liquid tank, power transmission waterway system and electrical system, the chassis is mechanically connected with the box, the liquid tank is arranged on the box, the liquid tank is connected with the power transmission waterway system and the electrical system, and the electrical system is used to control the fire extinguishing unit."

[0004] The existing fire nozzle of class B air foam high spray fire extinguishing device is usually installed at the end of the lifting arm support, so as to facilitate further approach to the fire source, but there is a deficiency that the lifting arm support is relatively large in size, and it is not convenient to accurately control the spraying direction of the fire nozzle, which affects the fire extinguishing speed. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of B class air foam high spray fire extinguishing device to solve the deficiency in the prior art.

[0006] To achieve the above purpose, the utility model provides the following technical scheme:

[0007] A kind of B class air foam high spray fire extinguishing device, including the arm rod of lifting arm support, the arm rod end is equipped with fire nozzle, the arm rod is equipped with accommodating cavity, the fire nozzle is fixedly connected with the shaft pipe unit that moves through accommodating cavity, the bottom of the shaft pipe unit is connected with liquid supply pipe, the accommodating cavity is equipped with fixed servo motor, the servo motor is drivenly connected with shaft pipe unit by transmission mechanism, the shaft pipe unit is driven by servo motor and occurs angular deflection on arm rod.

[0008] Preferably, a waterproof camera is fixed on the fire nozzle, and the shooting direction of the waterproof camera is consistent with the spraying direction of the fire nozzle.

[0009] Preferably, the accommodating space of the accommodating cavity is a rectangular cavity, and the bottom surface and the top surface of the accommodating cavity are both provided with a through hole for the shaft pipe unit to pass through.

[0010] Preferably, the shaft pipe unit comprises a column pipe protruding from the through hole at both ends, one end of the column pipe is fixedly communicated with the water inlet end of the fire nozzle, a core pipe is rotatably inserted into the column pipe, a limiting ring located in the fire nozzle is fixedly sleeved at the top end of the core pipe, and the bottom end of the core pipe is fixedly communicated with the liquid supply pipe.

[0011] Preferably, the transmission mechanism comprises a worm rod rotatably mounted on the side wall of the accommodating cavity, the other end of the worm rod is fixedly arranged on the same shaft as the output shaft of the servo motor, and the side surface of the worm rod is meshed with a worm wheel fixedly sleeved with the column pipe.

[0012] Preferably, a plurality of recessed grooves are arranged in the form of a ring on the surface of the worm wheel, and a supporting ball is movably mounted in each recessed groove.

[0013] Preferably, the arm rod and the liquid supply pipe are connected through a fastening frame.

[0014] In the above technical scheme, the B-type air foam high spray fire extinguishing device provided by the utility model can rotatably install the fire nozzle on the arm rod of the lifting arm frame through the shaft pipe unit, and drive the shaft pipe unit to be connected with the transmission mechanism, so that the fire nozzle can be deflected around the shaft of the shaft pipe unit, thereby facilitating the accurate control of the spraying direction of the fire nozzle and improving the fire extinguishing speed. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the utility model, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0016] Fig. 1 It is a cross-sectional view of the B-type air foam high spray fire extinguishing device of the utility model;

[0017] Fig. 2 It is a whole schematic view of the B-type air foam high spray fire extinguishing device of the utility model.

[0018] Explanation of reference signs:

[0019] 1, arm rod; 2, fire nozzle; 3, accommodating cavity; 4, shaft pipe unit; 4.1, column pipe; 4.2, core pipe; 4.3, limiting ring; 5, liquid supply pipe; 6, servo motor; 7, transmission mechanism; 7.1, worm rod; 7.2, worm wheel; 7.3, recessed groove; 7.4, supporting ball; 8, waterproof camera; 9, through hole; 10, fastening frame; 11, torque shaft sleeve. DETAILED DESCRIPTION

[0020] In order for those skilled in the art to better understand the technical scheme of the utility model, the utility model will be further described in detail below with reference to the drawings.

[0021] Please refer to Figs. 1-2 The utility model discloses a kind of B class air foam high spray fire extinguishing devices, including the arm lever 1 of lifting arm support, arm lever 1 end is equipped with fire nozzle 2, arm lever 1 is equipped with containing cavity 3, fire nozzle 2 is fixedly connected with shaft pipe unit 4 that passes through containing cavity 3, the bottom of shaft pipe unit 4 is communicated with liquid supply pipe 5, containing cavity 3 is equipped with fixed servo motor 6, servo motor 6 can accept the console on vehicle body and switch on-off state and shaft rotation direction, servo motor 6 is connected with shaft pipe unit 4 by transmission mechanism 7, and shaft pipe unit 4 is driven by servo motor 6 and occurs angular deflection on arm lever 1;

[0022] When needing to change the jet direction of fire nozzle 2 in actual use, for example, when the output shaft of servo motor 6 rotates forward, shaft pipe unit 4 drives fire nozzle 2 to deflect left synchronously under the transmission of transmission mechanism 7 at this time, and when the output shaft of servo motor 6 reversely rotates, shaft pipe unit 4 drives fire nozzle 2 to deflect right synchronously under the transmission of transmission mechanism 7 at this time, so as to adjust and control the jet direction of fire nozzle 2, the whole process is simple in operation, convenient in control and stable in structure, so as to facilitate accurate control of the jet direction of fire nozzle, which is beneficial to improve the fire extinguishing speed and has good practical significance.

[0023] In another embodiment of the utility model, waterproof camera 8 is fixed on fire nozzle 2, the shooting direction of waterproof camera 8 is consistent with the jet direction of fire nozzle 2, so as to facilitate observation of fire source position and assist in adjusting and controlling the orientation of fire nozzle 2.

[0024] Preferably, the containing space of containing cavity 3 is rectangular cavity, the bottom surface and the top surface of containing cavity 3 are both provided with through hole 9 for shaft pipe unit 4 to pass through, wherein shaft pipe unit 4 includes column pipe 4.1 extending out of through hole 9 at both ends, the axis of column pipe 4.1 is perpendicular to the length direction of arm lever 1, one end of column pipe 4.1 is fixedly connected with the water inlet end of fire nozzle 2, core pipe 4.2 is rotatably inserted into column pipe 4.1, limiting ring 4.3 located in fire nozzle 2 is fixedly sleeved with the top end of core pipe 4.2, limiting ring 4.3 can prevent core pipe 4.2 from separating from column pipe 4.1, and the bottom end of core pipe 4.2 is fixedly connected with liquid supply pipe 5.

[0025] Further, the transmission mechanism 7 comprises a worm 7.1 rotatably mounted at one end to the side wall of the accommodating cavity 3, the other end of the worm 7.1 is fixed on the same shaft as the output shaft of the servo motor 6, the side surface of the worm 7.1 is engaged with a worm gear 7.2 which is fixedly sleeved with the column pipe 4.1, in addition, a plurality of annularly distributed recessed grooves 7.3 are formed on the wheel surface of the worm gear 7.2, and each recessed groove 7.3 is movably mounted with a supporting ball 7.4, so as to reduce the friction resistance during rotation, and also limit the axial movement of the column pipe 4.1 on the arm lever 1, the arm lever 1 and the liquid supply pipe 5 are connected through the fastening frame 10, so that the liquid supply pipe 5 has good fastening on the arm lever 1, preferably, the worm 7.1 and the output shaft of the servo motor 6 are coaxially fixed through the torque shaft sleeve 11;

[0026] In actual use, for example, when the output shaft of the servo motor 6 rotates forward, at this time, the worm 7.1 fixed on the same shaft as the servo motor 6 drives the column pipe 4.1 to rotate axially through the engaged worm gear 7.2, so that the fire nozzle 2 fixedly communicated with the column pipe 4.1 is deflected, when the fire nozzle 2 is jammed or cannot be deflected due to large resistance, at this time, the torque shaft sleeve 11 plays a role of force unloading between the worm 7.1 and the output shaft of the servo motor 6, so as to interrupt the torque transmission of the worm 7.1, and protect the servo motor 6 and the fire nozzle 2; when the servo motor 6 stops rotating, since the worm 7.1 is engaged with the worm gear 7.2, the transmission mechanism 7 which stops rotating plays a self-locking limiting role on the axial rotation of the column pipe 4.1, so as to ensure that the fire nozzle 2 after stopping deflection has good stability.

[0027] The above only describes some exemplary embodiments of the present application by way of illustration, without doubt, for ordinary skilled in the art, the described embodiments can be modified in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A class B air foam high-pressure fire extinguishing apparatus comprising an arm lever (1) of a lifting arm frame, characterized in that, The arm rod (1) is provided with a fire-fighting spray pipe (2), the arm rod (1) is provided with a containing cavity (3), the fire-fighting spray pipe (2) is fixedly connected with a shaft pipe unit (4) penetrating the containing cavity (3), the bottom end of the shaft pipe unit (4) is connected with a liquid supply pipe (5), the containing cavity (3) is provided with a servo motor (6) fixedly arranged therein, the servo motor (6) is in transmission connection with the shaft pipe unit (4) through a transmission mechanism (7), and the shaft pipe unit (4) is driven by the servo motor (6) to be angularly deflected on the arm rod (1).

2. A class B air foam high pressure fire extinguishing apparatus according to claim 1, characterized in that, The fire-fighting spray pipe (2) is fixedly provided with a waterproof camera (8), and the photographing direction of the waterproof camera (8) is consistent with the spraying direction of the fire-fighting spray pipe (2).

3. A class B air foam high pressure fire extinguishing apparatus according to claim 1, wherein The containing space of the containing cavity (3) is a rectangular cavity, and the bottom surface and the top surface of the containing cavity (3) are provided with through holes (9) for the shaft pipe unit (4) to penetrate.

4. A class B air foam high pressure fire extinguishing apparatus according to claim 3, wherein The shaft pipe unit (4) comprises a column pipe (4.1) extending out of the through hole (9) at both ends, one end of the column pipe (4.1) is fixedly connected with the water inlet end of the fire-fighting spray pipe (2), a core pipe (4.2) is rotatably inserted into the column pipe (4.1), a limiting ring (4.3) is fixedly sleeved on the top end of the core pipe (4.2) and located in the fire-fighting spray pipe (2), and the bottom end of the core pipe (4.2) is fixedly connected with the liquid supply pipe (5).

5. A class B air foam high pressure fire extinguishing apparatus as claimed in claim 4, wherein, The transmission mechanism (7) comprises a worm (7.1) rotatably mounted on the side wall of the containing cavity (3), the other end of the worm (7.1) is fixedly connected with the output shaft of the servo motor (6), and the side surface of the worm (7.1) is engaged with a worm wheel (7.2) fixedly sleeved on the column pipe (4.1).

6. A class B air foam high-pressure fire extinguishing device according to claim 5, characterized in that A plurality of recessed grooves (7.3) are arranged in the form of a ring on the surface of the worm wheel (7.2), and a supporting ball (7.4) is movably arranged in each recessed groove (7.3).

7. A class B air foam high-pressure fire extinguishing device according to claim 6, characterized in that The arm rod (1) and the liquid supply pipe (5) are connected through a fastening frame (10).

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