Vehicle-mounted foam spraying device

Abstract

The invention relates to the technical field of fire fighting equipment, in particular to a vehicle-mounted foam spraying device which comprises a supporting seat, a fire extinguishing agent conveying pipeline and a plurality of spraying assemblies. When the vehicle-mounted foam spraying device abuts against a fire scene such as a building or an oil tank along with the fire fighting truck, the lifting arm enables the vehicle-mounted foam spraying device to abut against an ideal height and approach a fire source in a close range, so that the fire extinguishing efficiency is guaranteed. According to the specific position of the fire source, the fire extinguishing agent conveying pipeline swings within the range of 0-90 degrees so as to adjust the pitching angles of the multiple spraying assemblies, the multiple spraying assemblies all spray the foam fire extinguishing agent towards the fire source, and the fire extinguishing efficiency is further improved. The fire extinguishing agent conveying pipeline is used as a swing support and a foam fire extinguishing agent conveying pipeline, so that the structure of the vehicle-mounted foam spraying device is effectively simplified, the use of parts is reduced, the manufacturing cost is reduced, and the maintenance is simpler.

Description

Technical Field

[0001] This application relates to the field of fire protection equipment technology, and in particular to a vehicle-mounted foam spraying device. Background Technology

[0002] Class A fires typically refer to fires caused by solid materials. For example, fires involving common household and office items such as wood, paper, cloth, and plastics fall under the category of Class A fires. Class B fires typically refer to fires caused by flammable liquids and solid materials that may melt when heated. Foam extinguishing agents are commonly used to extinguish both Class A and Class B fires.

[0003] Currently, foam spraying equipment is often transported to the fire scene using a trolley. However, for fires involving buildings or oil tanks, foam spraying equipment often cannot reach the ideal fire-fighting location due to the distance from the fire source, resulting in low fire-fighting efficiency.

[0004] The existing technical solutions mentioned above have the following drawbacks: for fires in buildings or oil tanks, foam spraying devices often cannot reach the ideal fire extinguishing location and are too far from the fire source, resulting in low fire extinguishing efficiency. Summary of the Invention

[0005] To improve fire extinguishing efficiency, this application provides a vehicle-mounted foam spraying device.

[0006] This application provides a vehicle-mounted foam spraying device, which adopts the following technical solution: A vehicle-mounted foam spraying device, comprising: Support mount, suitable for mounting on the lifting arm of a vehicle; The extinguishing agent delivery pipeline is swayably mounted on the support base and is used to deliver foam extinguishing agent; There are multiple spraying assemblies, each installed on and connected to the extinguishing agent delivery pipeline, and each used to spray foam extinguishing agent; each spraying assembly swings with the extinguishing agent delivery pipeline.

[0007] By adopting the above technical solution, when the vehicle-mounted foam spraying device arrives at the fire scene such as a building or oil tanker with the fire truck, the lifting arm raises the device to the ideal height, allowing it to approach the fire source at close range and ensure fire extinguishing efficiency. Depending on the specific location of the fire source, the extinguishing agent delivery pipeline swings within a 0-90° range to adjust the pitch angle of multiple spray components, ensuring that all components spray foam extinguishing agent towards the fire source, further improving fire extinguishing efficiency. The extinguishing agent delivery pipeline serves as both a swing support and a foam extinguishing agent delivery pipeline, effectively simplifying the structure of the vehicle-mounted foam spraying device, reducing the number of parts, lowering manufacturing costs, and simplifying maintenance.

[0008] This application further specifies that the extinguishing agent delivery pipeline includes: The first rotating shaft is rotatably mounted on the support base and has an extinguishing agent flow channel formed inside; The delivery pipe is fixedly connected at one end to the first rotating shaft and its interior is connected to the extinguishing agent flow channel. The first distribution pipe is fixedly connected to and communicates with the end of the delivery pipe away from the first rotating axis; the first distribution pipe is fixedly connected to each injection assembly and communicates with it. The inlet pipe is used to deliver foam extinguishing agent; A rotary joint, one end of which is fixedly connected to one end of the input tube, and the other end of which is fixedly connected to one end of the first rotating shaft; The first rotary driver is fixed on the support base, and its output end is fixedly connected to the end of the first rotary shaft away from the rotary joint. It is used to drive the first rotary shaft to rotate so that the delivery pipe, the first distribution pipe and each injection assembly swing.

[0009] By adopting the above technical solution, the foam extinguishing agent flows sequentially through the input pipe, rotary joint, extinguishing agent channel within the first rotating shaft, delivery pipe, and first distribution pipe before flowing to each spray assembly. Depending on the specific location of the fire source, the first rotary actuator drives the first rotating shaft to rotate, causing the delivery pipe, first distribution pipe, and each spray assembly to oscillate, ensuring that each spray assembly faces the fire source and guaranteeing extinguishing efficiency. The first rotating shaft serves as both a rotating component and a delivery channel, effectively reducing the number of parts required. Because the first rotating shaft functions as both a rotating component and a delivery channel, the addition of a rotary joint ensures that the input pipe does not restrict the rotation of the first rotating shaft, connects the delivery path, and provides a seal during rotation to prevent foam extinguishing agent leakage.

[0010] This application further specifies that the rotary joint includes: The static connecting pipe has a connector at one end, which is screwed to one end of the input pipe. The moving connecting pipe has one end inserted into the stationary connecting pipe and the other end screwed to one end of the first rotating shaft. The outer wall of the moving connecting pipe is rotatably connected to the inner wall of the stationary connecting pipe through the first bearing. A static sealing ring is fixed inside the end of the static connecting pipe where the connector is located, and is provided radially with an inner static sealing ring, a middle static sealing ring, and an outer static sealing ring. The dynamic sealing ring is fitted onto the outside of the insertion end of the dynamic connecting pipe and rotates with the dynamic connecting pipe. It is arranged radially in sequence with an inner dynamic sealing ring, a middle dynamic sealing ring, and an outer dynamic sealing ring. The inner dynamic sealing ring and the inner static sealing ring are arranged alternately in the radial direction. The middle dynamic sealing ring and the middle static sealing ring are arranged alternately in the radial direction. The outer dynamic sealing ring and the outer static sealing ring are arranged alternately in the radial direction. The follower ring is fitted onto the outside of the insertion end of the moving connecting pipe and rotates with the moving connecting pipe. The outer wall of the follower ring and the inner wall of the stationary connecting pipe form an air seal cavity. Piston rings are slidably fitted onto the follower ring along the axial direction of the follower ring; The transmission rods are multiple, with one end evenly fixed to the edge of the piston ring along the circumference of the piston ring, and the other end extending to the outside of the stationary connecting pipe; The transmission blocks are multiple and are fixedly connected one-to-one with the ends of the transmission rods furthest from the piston rings; The first linear actuator, consisting of multiple actuators, is uniformly fixed to the outer wall of the stationary connecting tube along its circumference, and its output end is connected to multiple transmission blocks in a one-to-one correspondence.

[0011] By adopting the above technical solution, the inner dynamic sealing ring, inner static sealing ring, middle dynamic sealing ring, middle static sealing ring, outer dynamic sealing ring, and outer static sealing ring arranged sequentially along the radial direction of the dynamic connecting pipe cooperate with each other to achieve a multi-layer sealing effect. This significantly improves the sealing performance at the connection between the static and dynamic connecting pipes, thereby improving the rotary sealing performance of the rotary joint. Multiple first linear actuators operate synchronously, driving the piston ring to move axially toward the static sealing ring along the following ring via multiple transmission blocks and transmission rods. This makes the outer circumferential air pressure of the static and dynamic sealing rings greater than their internal air pressure, thus preventing foam extinguishing agent leakage and enhancing the sealing effect.

[0012] This application further specifies that the extinguishing agent delivery pipeline also includes: There are multiple flow control valves, each installed on the first distribution pipe, corresponding to one of the multiple injection components; The on / off valve is installed on the input pipe.

[0013] This application further specifies that each jet assembly includes: The second distribution pipe is fixedly connected to the first distribution pipe at one end and is in communication with it; There are multiple branch pipes arranged in an array, each connected to the second branch pipe; The guide tube is placed over multiple branch pipes.

[0014] By adopting the above technical solution, compared with a single diversion pipe, the spray coverage area is effectively increased, and the fire extinguishing efficiency is improved. During the movement of the foam extinguishing agent, the guide tube plays a guiding role.

[0015] This application further specifies that each jet assembly also includes: The blower is installed at one end of the guide tube near the second distribution pipe.

[0016] By adopting the above technical solution, the blower is used to blow air to the end of the guide tube away from the second distribution pipe, thereby further increasing the spray coverage area and improving the fire extinguishing efficiency.

[0017] This application further includes: The protective frame is formed outside the extinguishing agent delivery pipeline and multiple spray components.

[0018] This application further includes: The position adjustment mechanism has a support base fixed on top, which is used to drive the support base to move and rotate within the plane where the position adjustment mechanism is located, so as to drive the fire extinguishing agent delivery pipeline and multiple spraying components to move and rotate.

[0019] By adopting the above technical solution, according to the specific location of the fire source, the position adjustment mechanism drives the support base to move and rotate slightly within the plane where the position adjustment mechanism is located, so as to drive multiple spray components to move and rotate slightly, thereby achieving the purpose of fine-tuning the position and orientation of the spray components, which in turn helps to ensure fire extinguishing efficiency.

[0020] This application further specifies that the position adjustment mechanism includes: Base plate; The second rotating shaft has a vertically set axis and its bottom end is rotatably connected to the top end of the base plate; Driven gear, sleeved on the outside of the second rotating shaft; The second rotary actuator is fixed to the bottom surface of the base plate; The driving gear is sleeved on the output shaft of the second rotary drive, and its side wall meshes with the side wall of the driven gear. The bottom surface of the first support plate is fixedly connected to the top end of the second rotating shaft, and rotates with the second rotating shaft; The second support plate is movably installed on the top surface of the first support plate, and the top surface is fixedly connected to the bottom end of the support base. The second linear actuator consists of four units, with their fixed ends hinged to the four corners of the first support plate and their output ends hinged to the four corners of the second support plate.

[0021] By adopting the above technical solution, the second rotary actuator can drive the drive gear to rotate, thereby driving the driven gear and the second rotary shaft to rotate, which in turn drives the first support plate, the second support plate, and the support base to rotate, thus driving multiple injection components to rotate and adjust their positions. The four second linear actuators cooperate to drive the second support plate to move in multiple degrees of freedom with small amplitudes, which in turn drives the support base to move in multiple degrees of freedom with small amplitudes, thereby driving multiple injection components to move in multiple degrees of freedom with small amplitudes, to finely adjust the positions of the multiple injection components.

[0022] In summary, the beneficial technical effects of this application are as follows: 1. When the vehicle-mounted foam spraying unit arrives at the scene of a fire, such as in a building or near an oil tanker, the lifting arm raises the unit to the ideal height, allowing it to approach the fire source at close range and ensure efficient firefighting. Depending on the specific location of the fire source, the extinguishing agent delivery pipeline swings within a 0-90° range to adjust the pitch angle of multiple spray components, ensuring that all components spray foam extinguishing agent towards the fire source, further improving firefighting efficiency. The extinguishing agent delivery pipeline serves as both a swing support and a foam extinguishing agent delivery pipeline, effectively simplifying the structure of the vehicle-mounted foam spraying unit, reducing the number of parts, lowering manufacturing costs, and simplifying maintenance.

[0023] 2. The foam extinguishing agent flows sequentially through the inlet pipe, rotary joint, extinguishing agent channel within the first rotating shaft, delivery pipe, and first distribution pipe before flowing to each spray assembly. Depending on the specific location of the fire source, the first rotary actuator drives the first rotating shaft to rotate, causing the delivery pipe, first distribution pipe, and each spray assembly to oscillate, oriented each spray assembly towards the fire source and ensuring extinguishing efficiency. The first rotating shaft serves as both a rotating component and a delivery channel, effectively reducing the number of parts required. Because the first rotating shaft functions as both a rotating component and a delivery channel, a rotary joint is added. This ensures that the inlet pipe does not restrict the rotation of the first rotating shaft, connects the delivery path, and provides a seal during rotation to prevent foam extinguishing agent leakage.

[0024] 3. An inner dynamic sealing ring, an inner static sealing ring, a middle dynamic sealing ring, a middle static sealing ring, and an outer dynamic sealing ring are sequentially arranged radially along the dynamic connecting pipe. These layers work together to provide a multi-layered seal, significantly improving the sealing performance at the connection between the static and dynamic connecting pipes, and consequently enhancing the rotary sealing performance of the rotary joint. Multiple first linear actuators operate synchronously, driving the piston ring along the axial direction of the moving ring towards the static sealing ring via multiple transmission blocks and rods. This causes the outer circumferential air pressure of the static and dynamic sealing rings to be greater than their internal air pressure, thus preventing foam extinguishing agent leakage and strengthening the seal.

[0025] 4. The second rotary actuator can drive the drive gear to rotate, thereby driving the driven gear and the second rotary shaft to rotate, which in turn drives the first support plate, the second support plate, and the support base to rotate, thus driving multiple injection components to rotate and adjust their positions. Four second linear actuators cooperate to drive the second support plate to move in multiple degrees of freedom with small amplitudes, which in turn drives the support base to move in multiple degrees of freedom with small amplitudes, thereby driving multiple injection components to move in multiple degrees of freedom with small amplitudes, to finely adjust the positions of the multiple injection components. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of an embodiment of a vehicle-mounted foam spraying device; Figure 2 yes Figure 1 The diagram shows the structure of the vehicle-mounted foam spraying device in use. Figure 3 yes Figure 1 The diagram shows the structure of the vehicle-mounted foam spraying device in another operating state. Figure 4 This is a schematic diagram of an embodiment of a fire extinguishing agent delivery pipeline; Figure 5 This is a schematic diagram of a rotary joint embodiment; Figure 6 This is a schematic diagram of another embodiment of the vehicle-mounted foam spraying device; Figure 7 This is a schematic diagram of one embodiment of the position adjustment mechanism; Figure 8 yes Figure 7 The side view of the position adjustment mechanism shown.

[0027] Reference numerals: 110, support base; 120, extinguishing agent delivery pipeline; 121, first rotating shaft; 1211, extinguishing agent flow channel; 122, delivery pipe; 123, first distribution pipe; 124, input pipe; 125, rotary joint; 1251, static connection pipe; 12511, connector; 1252, dynamic connection pipe; 1253, first bearing; 1254, static sealing ring; 12541, inner static sealing ring; 12542, middle static sealing ring; 12543, outer static sealing ring; 1255, dynamic sealing ring; 12551, inner dynamic sealing ring; 12552, middle dynamic sealing ring; 12553, outer dynamic sealing ring; 1256, follower ring; 12 57. Piston ring; 1258. Drive rod; 12591. Drive block; 12592. First linear actuator; 126. First rotary actuator; 127. Connecting bushing; 128. Flow control valve; 129. Switch valve; 130. Injection assembly; 131. Second distribution pipe; 132. Diverter pipe; 133. Guide tube; 140. Protective frame; 150. Position adjustment mechanism; 151. Base plate; 152. Second rotating shaft; 153. Driven gear; 154. Second rotary actuator; 155. Drive gear; 156. First support plate; 157. Second support plate; 158. Second linear actuator; 1591. Rolling ball; 1592. Elevator seat. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0029] Reference Figure 1 , Figure 2 and Figure 3 This application discloses a vehicle-mounted foam spraying device, including a support base 110, an extinguishing agent delivery pipeline 120, and multiple spraying components 130. The support base 110 is suitable for installation on the lifting arm of a vehicle. The extinguishing agent delivery pipeline 120 is swayably mounted on the support base 110 for delivering foam extinguishing agent. Multiple spraying components 130 are respectively installed on and connected to the extinguishing agent delivery pipeline 120, and are used to spray foam extinguishing agent. Each spraying component 130 sways with the extinguishing agent delivery pipeline 120. When the vehicle-mounted foam spraying device arrives at the fire scene such as a building or oil tanker with a fire truck, the lifting arm raises the device to an ideal height, allowing it to approach the fire source at close range to ensure fire extinguishing efficiency. Figure 2 and Figure 3 As shown, depending on the specific location of the fire source, the extinguishing agent delivery pipeline 120 is oscillated within a range of 0-90° to adjust the pitch angle of multiple spray components 130, ensuring that all spray components 130 spray foam extinguishing agent towards the fire source, further improving extinguishing efficiency. The extinguishing agent delivery pipeline 120 serves both as an oscillation support and as a foam extinguishing agent delivery pipeline 122, effectively simplifying the structure of the vehicle-mounted foam spraying device, reducing the number of parts, lowering manufacturing costs, and simplifying maintenance.

[0030] Reference Figure 1 and Figure 4In one embodiment, the extinguishing agent delivery pipeline 120 includes a first rotating shaft 121, a delivery pipe 122, a first distribution pipe 123, an input pipe 124, a rotary joint 125, and a first rotary actuator 126. The first rotating shaft 121 is rotatably mounted on a support 110 and has an extinguishing agent flow channel 1211 formed inside. One end of the delivery pipe 122 is fixedly connected to the first rotating shaft 121 and communicates with the extinguishing agent flow channel 1211. The middle portion of the first distribution pipe 123 is fixedly connected to and communicates with the end of the delivery pipe 122 away from the first rotating shaft 121. The first distribution pipe 123 is fixedly connected to and communicates with each spray assembly 130. The input pipe 124 is used to deliver foam extinguishing agent. One end of the rotary joint 125 is fixedly connected to one end of the input pipe 124, and the other end is fixedly connected to one end of the first rotating shaft 121. The first rotary actuator 126 is fixed to the support base 110, and its output end is fixedly connected to the end of the first rotary shaft 121 away from the rotary joint 125. It drives the first rotary shaft 121 to rotate, causing the delivery pipe 122, the first distribution pipe 123, and each spray assembly 130 to oscillate. The foam extinguishing agent flows sequentially through the input pipe 124, the rotary joint 125, the extinguishing agent flow channel 1211 within the first rotary shaft 121, the delivery pipe 122, and the first distribution pipe 123, before flowing to each spray assembly 130. Depending on the specific location of the fire source, the first rotary actuator 126 drives the first rotary shaft 121 to rotate, causing the delivery pipe 122, the first distribution pipe 123, and each spray assembly 130 to oscillate, ensuring that each spray assembly 130 faces the fire source and guaranteeing extinguishing efficiency. The first rotary shaft 121 serves both as a rotating component and as a delivery channel, effectively reducing the number of parts required. Since the first rotating shaft 121 is used as both a rotating component and a conveying channel, a rotary joint 125 is added. This ensures that the input pipe 124 does not restrict the rotation of the first rotating shaft 121, connects the conveying path, and seals the area during rotation to prevent leakage of the foam extinguishing agent.

[0031] Preferably, the two opposite ends of the first rotating shaft 121 are rotatably connected to the support base 110 via second bearings to improve the smoothness of rotation.

[0032] Preferably, the first rotary actuator 126 is a hydraulic motor, which can provide a large torque, is suitable for heavy-duty work, has good working stability, high reliability, and strong adaptability.

[0033] Preferably, the output shaft of the first rotary driver 126 is fixedly connected to the first rotary shaft 121 via a connecting sleeve 127. The output shaft of the first rotary driver 126 and the connecting sleeve 127 are connected by a flat key to ensure stable power transmission. The connecting sleeve 127 and the first rotary shaft 121 are connected by welding to improve the stability of the connection.

[0034] Reference Figure 4 and Figure 5In one embodiment, the rotary joint 125 includes a stationary connecting pipe 1251, a moving connecting pipe 1252, a stationary sealing ring 1254, a moving sealing ring 1255, a follower ring 1256, a piston ring 1257, a plurality of transmission rods 1258, a plurality of transmission blocks 12591, and a plurality of first linear actuators 12592. One end of the stationary connecting pipe 1251 has a connector 12511 with threads on its outer wall. The connector 12511 is screwed to one end of the input pipe 124 to facilitate the assembly and disassembly of the rotary joint 125 and the input pipe 124. One end of the moving connecting pipe 1252 is inserted into the stationary connecting pipe 1251, and the other end is screwed to one end of the first rotating shaft 121 to facilitate the assembly and disassembly of the rotary joint 125 and the first rotating shaft 121. The outer wall of the moving connecting pipe 1252 is rotatably connected to the inner wall of the stationary connecting pipe 1251 via a first bearing 1253, allowing the moving connecting pipe 1252 to rotate relative to the stationary connecting pipe 1251. A stationary sealing ring 1254 is fixed inside the end of the stationary connecting pipe 1251 where the connector 12511 is located, and is arranged radially with an inner stationary sealing ring 12541, a middle stationary sealing ring 12542, and an outer stationary sealing ring 12543. A moving sealing ring 1255 is fitted onto the outside of the insertion end of the moving connecting pipe 1252, and rotates with the moving connecting pipe 1252. It is arranged radially with an inner moving sealing ring 12551, a middle moving sealing ring 12552, and an outer moving sealing ring 12553. The inner moving sealing ring 12551 and the inner stationary sealing ring 12541 are arranged alternately in the radial direction. The middle dynamic sealing ring 12552 and the middle static sealing ring 12542 are arranged alternately in the radial direction. The outer dynamic sealing ring 12553 and the outer static sealing ring 12543 are also arranged alternately in the radial direction. The inner dynamic sealing ring 12551, the inner static sealing ring 12541, the middle dynamic sealing ring 12552, the middle static sealing ring 12542, the outer dynamic sealing ring 12553, and the outer static sealing ring 12543 arranged sequentially along the radial direction of the dynamic connecting pipe 1252 cooperate with each other to achieve a multi-layer sealing effect, which greatly improves the sealing performance at the connection between the static connecting pipe 1251 and the dynamic connecting pipe 1252, and thus improves the rotational sealing performance of the rotary joint 125. The follower ring 1256 is sleeved on the outside of the insertion end of the dynamic connecting pipe 1252 and rotates with the dynamic connecting pipe 1252. The outer wall of the follower ring 1256 and the inner wall of the static connecting pipe 1251 form an air-sealing cavity. Piston ring 1257 is slidably fitted onto follower ring 1256 along the axial direction. One end of a plurality of transmission rods 1258 is uniformly fixed to the edge of piston ring 1257 along the circumference of piston ring 1257, and the other end extends to the outside of stationary connecting pipe 1251. A plurality of transmission blocks 12591 are fixedly connected one-to-one with the ends of the plurality of transmission rods 1258 away from piston ring 1257.Multiple first linear actuators 12592 are uniformly fixed to the outer wall of the stationary connecting pipe 1251 along its circumference, and their output ends are connected to multiple transmission blocks 12591 one-to-one. The multiple first linear actuators 12592 operate synchronously, driving the piston ring 1257 to move along the axial direction of the follower ring 1256 toward the stationary sealing ring 1254 through the multiple transmission blocks 12591 and multiple transmission rods 1258. This causes the outer circumferential air pressure of the stationary sealing ring 1254 and the dynamic sealing ring 1255 to be greater than the internal air pressure of the stationary sealing ring 1254 and the dynamic sealing ring 1255, thereby preventing the leakage of foam extinguishing agent and enhancing the sealing effect.

[0035] Preferably, each linear actuator is a hydraulic cylinder, which has a simple structure, high reliability, and can withstand large working pressure.

[0036] Reference Figure 1 In one embodiment, the extinguishing agent delivery pipeline 120 further includes multiple flow control valves 128 and on / off valves 129. The multiple flow control valves 128 are respectively installed on the first distribution pipe 123, corresponding one-to-one with multiple spraying assemblies 130, and are used to adjust the spray flow rate of the corresponding spraying assembly 130. The on / off valves 129 are installed on the input pipe 124 and are used to control the on / off state of the input pipe 124.

[0037] Reference Figure 2 In one embodiment, each spray assembly 130 includes a second distribution pipe 131, multiple branch pipes 132, and a guide tube 133. One end of the second distribution pipe 131 is fixedly connected to and communicates with the first distribution pipe 123. The multiple branch pipes 132 are arranged in a circular, square, triangular, or rectangular array, and are respectively connected to the second distribution pipe 131 for spraying foam extinguishing agent. Compared to a single branch pipe 132, this effectively increases the spray coverage area and improves the extinguishing efficiency. The guide tube 133 covers the multiple branch pipes 132. During the movement of the foam extinguishing agent, the guide tube 133 plays a guiding role.

[0038] Preferably, each spray assembly 130 further includes a blower (not shown in the figure). The blower is installed at one end of the guide tube 133 near the second distribution pipe 131, and is used to blow air towards the end of the guide tube 133 away from the second distribution pipe 131, further increasing the spray coverage area to further improve the fire extinguishing efficiency. The blower is a fan. One, two, or more fans may be provided.

[0039] Reference Figure 1In one embodiment, the vehicle-mounted foam spraying device further includes a protective frame 140. The protective frame 140 is formed outside the extinguishing agent delivery line 120 and the plurality of spraying components 130, providing protection for the extinguishing agent delivery line 120 and the plurality of spraying components 130. The protective frame 140 is bolted to the spraying components 130 / extinguishing agent delivery line 120 to facilitate the installation and removal of the protective frame 140.

[0040] Preferably, the protective frame 140 is provided with reinforcing ribs at the position where the first distribution pipe 123 and the conveying pipe 122 connect, so as to improve the protection effect at the connection between the first distribution pipe 123 and the conveying pipe 122.

[0041] Reference Figure 6 In one embodiment, the vehicle-mounted foam spraying device further includes a position adjustment mechanism 150. A support base 110 is fixed to the top of the position adjustment mechanism 150, which is used to drive the support base 110 to move and rotate within the plane of the position adjustment mechanism 150, thereby driving the extinguishing agent delivery pipeline 120 and multiple spraying components 130 to move and rotate. Depending on the specific location of the fire source, the position adjustment mechanism 150 drives the support base 110 to move and rotate slightly within the plane of the position adjustment mechanism 150, thereby driving the multiple spraying components 130 to move and rotate slightly, achieving the purpose of fine-tuning the position and orientation of the spraying components 130, thus helping to ensure fire extinguishing efficiency.

[0042] Reference Figure 7 and Figure 8In one embodiment, the position adjustment mechanism 150 includes a base plate 151, a second rotating shaft 152, a driven gear 153, a second rotary actuator 154, a driving gear 155, a first support plate 156, a second support plate 157, and four second linear actuators 158. The base plate 151 is mounted on the vehicle's lifting arm. The axis of the second rotating shaft 152 is vertically aligned, and its bottom end is rotatably connected to the top end of the base plate 151. The driven gear 153 is sleeved on the outside of the second rotating shaft 152. The second rotary actuator 154 is fixed to the bottom surface of the base plate 151. The driving gear 155 is sleeved on the output shaft of the second rotary actuator 154, and its sidewall meshes with the sidewall of the driven gear 153. The bottom surface of the first support plate 156 is fixedly connected to the top end of the second rotating shaft 152 and rotates with the second rotating shaft 152. The second support plate 157 is movably mounted on the top surface of the first support plate 156, and its top surface is fixedly connected to the bottom end of the support base 110. The fixed ends of the four second linear actuators 158 are hinged to the four corners of the first support plate 156, and the output ends are hinged to the four corners of the second support plate 157. The second rotary actuator 154 can drive the drive gear 155 to rotate, thereby driving the driven gear 153 and the second rotating shaft 152 to rotate, which in turn drives the first support plate 156, the second support plate 157 and the support base 110 to rotate, thereby driving the multiple injection components 130 to rotate, so as to adjust the position of the multiple injection components 130. The four second linear actuators 158 cooperate with each other to drive the second support plate 157 to move in multiple degrees of freedom with small amplitude, which in turn drives the support base 110 to move in multiple degrees of freedom with small amplitude, thereby driving the multiple injection components 130 to move in multiple degrees of freedom with small amplitude, so as to finely adjust the position of the multiple injection components 130.

[0043] Preferably, the second rotary actuator 154 is a hydraulic motor, which can provide a large torque, is suitable for heavy-duty work, has good working stability, high reliability, and strong adaptability.

[0044] Preferably, each of the second linear actuators 158 is a hydraulic cylinder, which has a simple structure, high reliability, and can withstand large working pressure.

[0045] Preferably, the top of the first support plate 156 and the bottom of the second support plate 157 are connected by a plurality of rolling balls 1591. The rolling balls 1591 serve both as support and reduce the resistance encountered by the second support plate 157 when it moves relative to the first support plate 156.

[0046] Preferably, the top of the second support plate 157 is fixedly connected to the support base 110 via a raised seat 1592. The raised seat 1592 facilitates the swinging of the extinguishing agent delivery pipeline 120.

[0047] The implementation principle of this embodiment is as follows: When the vehicle-mounted foam spraying device arrives at the fire scene such as a building or oil tanker with the fire truck, the lifting arm raises the device to the ideal height, bringing it close to the fire source to ensure fire extinguishing efficiency. Depending on the specific location of the fire source, the extinguishing agent delivery pipeline 120 swings within a 0-90° range to adjust the pitch angle of the multiple spray components 130, ensuring that all components spray foam extinguishing agent towards the fire source, further improving fire extinguishing efficiency. The extinguishing agent delivery pipeline 120 serves both as a swing support and as a foam extinguishing agent delivery pipeline 122, effectively simplifying the structure of the vehicle-mounted foam spraying device, reducing the number of parts, lowering manufacturing costs, and simplifying maintenance.

[0048] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A vehicle-mounted foam spraying device, characterized in that, include: Support base (110) is suitable for mounting on the lifting arm of a vehicle; The extinguishing agent delivery pipeline (120) is swayably mounted on the support (110) for delivering foam extinguishing agent; There are multiple spraying components (130), which are respectively installed on the fire extinguishing agent delivery pipeline (120) and are respectively connected to the fire extinguishing agent delivery pipeline (120) for spraying foam fire extinguishing agent; each spraying component (130) swings with the fire extinguishing agent delivery pipeline (120).

2. The vehicle-mounted foam spraying device according to claim 1, characterized in that, The extinguishing agent delivery pipeline (120) includes: The first rotating shaft (121) is rotatably mounted on the support base (110) and has an extinguishing agent flow channel (1211) formed inside it; The delivery pipe (122) is fixedly connected at one end to the first rotating shaft (121) and its interior is connected to the extinguishing agent flow channel (1211); The first distribution pipe (123) is fixedly connected to the end of the delivery pipe (122) away from the first rotating shaft (121) in the middle and is in communication with it; the first distribution pipe (123) is fixedly connected to each of the spraying components (130) and is in communication with it. The inlet pipe (124) is used to deliver foam extinguishing agent; A rotary joint (125) is fixedly connected at one end to one end of the input tube (124) and at the other end to one end of the first rotating shaft (121); The first rotary driver (126) is fixed on the support base (110), and its output end is fixedly connected to the end of the first rotary shaft (121) away from the rotary joint (125). It is used to drive the first rotary shaft (121) to rotate so that the delivery pipe (122), the first distribution pipe (123) and each of the injection components (130) swing.

3. The vehicle-mounted foam spraying device according to claim 2, characterized in that, The rotary joint (125) includes: A static connecting pipe (1251) has a connector (12511) at one end, which is screwed to one end of the input pipe (124) through the connector (12511); The moving connecting pipe (1252) has one end inserted into the stationary connecting pipe (1251) and the other end screwed to one end of the first rotating shaft (121). The outer wall is rotatably connected to the inner wall of the stationary connecting pipe (1251) through the first bearing (1253). A static sealing ring (1254) is fixed inside the end of the static connecting pipe (1251) where the connector (12511) is located, and an inner static sealing ring (12541), a middle static sealing ring (12542) and an outer static sealing ring (12543) are arranged in a radial sequence. A dynamic sealing ring (1255) is fitted onto the outside of the insertion end of the dynamic connecting pipe (1252). As the dynamic connecting pipe (1252) rotates, it is radially arranged with an inner dynamic sealing ring (12551), a middle dynamic sealing ring (12552), and an outer dynamic sealing ring (12553). The inner dynamic sealing ring (12551) and the inner static sealing ring (12541) are radially staggered; the middle dynamic sealing ring (12552) and the middle static sealing ring (12542) are radially staggered; and the outer dynamic sealing ring (12553) and the outer static sealing ring (12543) are radially staggered. The follower ring (1256) is sleeved on the outside of the insertion end of the moving connecting pipe (1252) and rotates with the moving connecting pipe (1252). The outer wall of the ring and the inner wall of the stationary connecting pipe (1251) form an air-sealed cavity. Piston ring (1257) is slidably sleeved on follower ring (1256) along the axial direction of follower ring (1256); Multiple transmission rods (1258) are fixed at one end along the circumference of the piston ring (1257) on the edge of the piston ring (1257), and the other end extends to the outside of the stationary connecting pipe (1251). There are multiple transmission blocks (12591), which are fixedly connected one-to-one with the ends of the multiple transmission rods (1258) away from the piston ring (1257); Multiple first linear actuators (12592) are uniformly fixed on the outer wall of the stationary connecting pipe (1251) along the circumference of the stationary connecting pipe (1251), and their output ends are connected to the multiple transmission blocks (12591) one by one.

4. The vehicle-mounted foam spraying device according to claim 2, characterized in that, The extinguishing agent delivery pipeline (120) also includes: Multiple flow control valves (128) are installed on the first distribution pipe (123) and correspond one-to-one with the multiple injection assemblies (130); A switching valve (129) is installed on the input pipe (124).

5. The vehicle-mounted foam spraying device according to claim 2, characterized in that, Each of the jetting components (130) includes: The second distribution pipe (131) is fixedly connected to the first distribution pipe (123) at one end and is in communication with it; There are multiple branch pipes (132) arranged in an array, each connected to the second distribution pipe (131); The guide tube (133) is covered outside the plurality of said diversion tubes (132).

6. The vehicle-mounted foam spraying device according to claim 5, characterized in that, Each of the jetting components (130) further includes: A blower is installed at one end of the guide tube (133) near the second distribution pipe (131).

7. The vehicle-mounted foam spraying device according to any one of claims 1 to 5, characterized in that, Also includes: A protective frame (140) is formed outside the fire extinguishing agent delivery line (120) and the plurality of spraying components (130).

8. The vehicle-mounted foam spraying device according to any one of claims 1 to 5, characterized in that, Also includes: The position adjustment mechanism (150) has the support base (110) fixed on its top, which is used to drive the support base (110) to move and rotate within the plane of the position adjustment mechanism (150), so as to drive the fire extinguishing agent delivery pipeline (120) and the multiple spraying components (130) to move and rotate.

9. The vehicle-mounted foam spraying device according to claim 8, characterized in that, The position adjustment mechanism (150) includes: Base plate (151); The second rotating shaft (152) is vertically set and its bottom end is rotatably connected to the top end of the base plate (151); Driven gear (153) is sleeved on the outside of the second rotating shaft (152); The second rotary actuator (154) is fixed to the bottom surface of the base plate (151); The driving gear (155) is sleeved on the output shaft of the second rotary driver (154), and its sidewall meshes with the sidewall of the driven gear (153). The bottom surface of the first support plate (156) is fixedly connected to the top end of the second rotating shaft (152) and rotates with the second rotating shaft (152); The second support plate (157) is movably installed on the top surface of the first support plate (156), and the top surface is fixedly connected to the bottom end of the support base (110). There are four second linear actuators (158), with their fixed ends hinged to the four corners of the first support plate (156) and their output ends hinged to the four corners of the second support plate (157).

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