Folding universal warning flagpole of aviation oil pipeline refueling truck

Abstract

The invention discloses a foldable universal warning flagpole for an aviation oil pipeline refueling truck, which belongs to the technical field of warning flags for refueling trucks and comprises a support, a support rod, a first elastic part, a fixing rod, a sound production component, an adjusting component and a plurality of warning flags. A fixing rod is installed at the other end of the supporting rod through a first elastic piece, a sound production assembly is installed at the bottom of the fixing rod, an adjusting assembly is installed on the fixing rod, and a plurality of warning flags are arranged on the adjusting assembly and detachably connected with the fixing rod. According to the invention, a sound alarm can be actively sent to the surrounding environment through the sound production assembly, so that a worker can make a quick response after a collision accident; active alarming is achieved by communicating the sound production assembly with the external air source, the method is completely independent of external power supply, the electric spark risk is completely eradicated, the anti-explosion requirement of an aviation fuel oil filling operation scene is met, and the safety of the aviation fuel oil filling process is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refueling truck warning flags, in particular to a folding universal warning flag pole for a refueling truck. BACKGROUND

[0002] In the operation of aviation fuel filling, the refueling truck needs to be frequently moved on the apron and deliver fuel to the aircraft through the exposed refueling pipe. Due to the complex apron environment, involving various vehicles, ground personnel and equipment cross operation, the refueling pipe in the stretched state is easy to become a potential collision point, and without corresponding warning protection measures, it is easy to cause fuel leakage, equipment damage and even safety accidents.

[0003] The existing warning protection measures mainly rely on fixed warning signs, conical barrels and other simple signs. Although these methods have played a warning role, they also have certain limitations, such as the lack of a quick response mechanism. On the one hand, when the refueling pipe is accidentally bumped by a vehicle or equipment, it cannot automatically trigger the emergency warning function such as sound and light alarm, which may delay the risk identification and response opportunity. On the other hand, when the warning protection measures are collided, they are often tilted or displaced, and it is difficult to automatically restore to the original warning position, resulting in the interruption of the warning function, thereby continuously posing a risk to subsequent aviation fuel filling operations. In addition, the warning devices in the prior art that introduce sound and light alarm functions usually rely on external power supply, which has the risk of electrical spark. In the aviation fuel filling scene, which has extremely strict requirements for explosion-proof, the use of any non-explosion-proof electrical elements may easily cause serious safety hazards. Therefore, it is urgent to design a folding universal warning flag pole for a refueling truck to improve the safety of aviation fuel filling operations. SUMMARY

[0004] The main purpose of the present application is to overcome the defects of the prior art, provide a folding universal warning flag pole for a refueling truck, which has active warning and automatic reset functions, does not rely on external power supply, has no risk of electrical spark, meets the explosion-proof requirements of the aviation fuel filling scene, and can improve the safety of the aviation fuel filling process.

[0005] To achieve the above purpose, the present application provides a folding universal warning flag pole for a refueling truck, which comprises a support, a support rod, a first elastic member, a fixed rod, a sound emitting assembly, an adjusting assembly and a plurality of warning flags. The support is arranged near the pipe head of the refueling pipe. One end of the support rod is movably connected with the support. The other end of the support rod is provided with the fixed rod through the first elastic member. The bottom of the fixed rod is detachably provided with the sound emitting assembly. The adjusting assembly is movably arranged on the fixed rod along the extension direction thereof. The plurality of warning flags are arranged on the adjusting assembly and detachably connected with the fixed rod. The support rod is provided with an air inlet hole, an air outlet hole and an air exhaust hole, and a joint in communication with an air source is detachably mounted at the air inlet hole; the sound generating assembly comprises a support, a sound generating member, a hose and a plug, the top of the support is provided with the fixing rod, the outer wall of the support is detachably mounted with the sound generating member, the bottom of the support is provided with the first elastic member and the hose in communication with the sound generating member, the end of the hose away from the support is fixedly connected with the support rod, and the plug is movably mounted in the hose and used for plugging the air outlet hole.

[0006] Preferably, a gas conveying channel in communication with the sound generating member and the hose is formed in the support, a mesh plate is arranged at the end of the gas conveying channel close to the hose, the mesh plate is provided with a second elastic member, and the end of the second elastic member away from the mesh plate is provided with the plug.

[0007] Preferably, the sound generating member comprises a shell, a turbine and a cover plate, the shell is formed with an air inlet pipe detachably connected with the support, the turbine is rotatably mounted in the shell, and a plurality of air outlets are uniformly and spacedly formed in the side wall of the shell along the circumference thereof and are detachably mounted with the cover plate.

[0008] Preferably, the turbine comprises a mounting portion and a plurality of blades, the mounting portion is rotatably connected with the shell, a plurality of the blades are uniformly and spacedly arranged on the outer wall of the mounting portion along the circumference thereof, and a recess is formed in the mounting portion, the sound generating member further comprises a whistle ball arranged in the recess, and the cover plate is provided with a partition plate extending into the recess.

[0009] Preferably, the adjusting assembly comprises a lifting seat, a locking member and a sleeve, the lifting seat is movably sleeved on the fixing rod through the locking member, a plurality of the warning flags are hingedly connected to the lifting seat along the circumference thereof, and the sleeve is detachably connected with the lifting seat and used for pushing the plurality of warning flags to rotate relative to the fixing rod.

[0010] Preferably, the adjusting assembly further comprises a clamping ring, the clamping ring is arranged at the top of the fixing rod, a clamping groove is formed in the clamping ring corresponding to the positions of the plurality of warning flags, and a stop ring is arranged on each of the plurality of warning flags and abuts against the inner wall of the sleeve and the outer wall of the fixing rod.

[0011] Preferably, the top of the support is provided with a mounting hole in plug-in cooperation with the support rod, a limiting groove is formed in the hole wall of the mounting hole, the bottom of the support rod is provided with a connecting member penetrating into the limiting groove, and a notch groove is formed at the hole opening of the mounting hole for the support rod to extend into.

[0012] Beneficial effects: 1. The folding universal warning flag pole of the aviation oil pipeline refueling vehicle of the present application actively alarms after being collided through the sound emitting assembly in communication with the external air source, completely does not depend on the external power supply, eliminates the risk of electrical spark, meets the explosion-proof requirement of the aviation fuel filling operation scene, reduces the security risk, and significantly improves the safety of the aviation fuel filling process.

[0013] 2. In the use process of the folding universal warning flag pole of the aviation oil pipeline refueling vehicle of the present application, when the fixed rod is collided, the sound emitting assembly can actively emit a sound alarm to the surrounding environment to remind the surrounding ground support equipment or staff to pay attention to the collision of the fueling pipe and to prevent the external impact object from continuing to move, so as to facilitate the staff to make a quick response after the collision accident.

[0014] 3. In the use process of the folding universal warning flag pole of the aviation oil pipeline refueling vehicle of the present application, after the fixed rod or the warning flag is collided, the fixed rod can be automatically reset by the elastic restoring force of the first elastic member, so as to ensure that the warning effect of the several warning flags on the adjusting assembly on the surrounding environment is continuous and effective, and manual intervention or re-adjustment of the installation position of the fixed rod is not required, thereby reducing the labor intensity of the staff and facilitating the use.

[0015] 4. In the use process of the folding universal warning flag pole of the aviation oil pipeline refueling vehicle of the present application, the staff can adjust the installation position of the adjusting assembly on the fixed frame to raise the several warning flags to a preset height, so as to remind the surrounding vehicles, ground personnel or equipment to pay attention to the fact that the fueling operation is in progress, effectively prevent them from entering the fueling operation area, ensure the warning effect on the surrounding environment, and improve the safety of the aviation fuel filling process.

[0016] 5. In the use process of the folding universal warning flag pole of the aviation oil pipeline refueling vehicle of the present application, the staff can flexibly adjust the height position of the adjusting assembly on the fixed rod according to the actual situation of the surrounding environment, so as to avoid the warning flags being blocked by external factors such as ground support equipment or personnel and affecting the use effect, and improve the use flexibility and adaptability to the surrounding environment.

[0017] 6. In the folding universal warning flag pole of the aviation oil pipeline refueling vehicle of the present application, one end of the support rod is movably connected with the bracket, so that the staff can rotate the support rod relative to the bracket to place the fixed rod, the sound emitting assembly and the several warning flags and other related structural components on the fueling pipe fixing frame, thereby reducing the occupied space, facilitating transportation, transportation and management, preventing the folding universal warning flag pole of the aviation oil pipeline refueling vehicle of the present application from blocking other equipment or making false warning information on the apron, and facilitating the use.

[0018] 7. In the folding universal warning flag pole of the aviation oil pipeline refueling vehicle, the support is arranged close to the pipe head of the refueling pipe, so that the several warning flags on the support can move synchronously with the pipe head of the refueling pipe, that is, the several warning flags can always mark the position of the pipe head of the refueling pipe in real time, so as to effectively ensure the warning effect of the refueling pipe on the surrounding environment during use. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0020] Figure 1 is a structural schematic view of the folding universal warning flag pole of the aviation oil pipeline refueling vehicle in a folded state according to an embodiment of the present application; Figure 2 is a structural schematic view of the folding universal warning flag pole of the aviation oil pipeline refueling vehicle in a first perspective according to an embodiment of the present application; Figure 3 is Figure 2 is an enlarged view of part A in FIG. 4; Figure 4 is a structural schematic view of the folding universal warning flag pole of the aviation oil pipeline refueling vehicle in a second perspective according to an embodiment of the present application; Figure 5 is Figure 4 is an enlarged view of part B in FIG. 5; Figure 6 is a structural schematic view of the folding universal warning flag pole of the aviation oil pipeline refueling vehicle in a third perspective according to an embodiment of the present application; Figure 7 is Figure 6 is a sectional view of part C-C in FIG. 6; Figure 8 is Figure 7 is an enlarged view of part D in FIG. 7; Figure 9 is a force change diagram of the second elastic member based on Figure 8 the fixed rod is subjected to collision and tilting deflection; Figure 10 is a structural schematic view of the sounding assembly in the folding universal warning flag pole of the aviation oil pipeline refueling vehicle according to an embodiment of the present application.

[0021] In the figure: 1 - support; 2 - support rod; 3 - first elastic member; 4 - fixed rod; 5 - sound generating assembly; 6 - adjusting assembly; 7 - warning flag; 8 - air inlet hole; 9 - air outlet hole; 10 - exhaust hole; 11 - support; 12 - sound generating member; 13 - hose; 14 - plug; 15 - air conveying channel; 16 - grid plate; 17 - second elastic member; 18 - shell; 19 - turbine; 20 - cover plate; 21 - air inlet pipe; 22 - air outlet; 23 - mounting portion; 24 - blade; 25 - groove; 26 - whistle bead; 27 - lifting seat; 28 - locking member; 29 - sleeve; 30 - clasp ring; 31 - stop ring; 32 - mounting hole; 33 - limiting groove; 34 - connecting member; 35 - notch groove. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts fall within the scope of protection of the present application.

[0024] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0025] In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application. In addition, if the terms "first", "second" and the like appear in the description of the present application, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, in the description of the present application, the terms "horizontal", "vertical" and the like do not mean that the components are absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0027] In the description of the present application, it should be noted that, unless otherwise specified and limited, if the terms "arrangement", "installation", "connection", "connection" appear, they should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] Embodiment 1: The present application provides a folding universal warning flagpole for a fuel pipeline tanker.

[0029] In an embodiment of the present application, the folding universal warning flagpole for a fuel pipeline tanker comprises a support 1, a support rod 2, a first elastic member 3, a fixed rod 4, a sound emitting assembly 5, an adjusting assembly 6 and a plurality of warning flags 7. The support 1 is arranged near the pipe head of the fueling pipe. One end of the support rod 2 is movably connected with the support 1. The other end of the support rod 2 is provided with the fixed rod 4 through the first elastic member 3. The bottom of the fixed rod 4 is detachably provided with the sound emitting assembly 5. The adjusting assembly 6 is movably arranged on the fixed rod 4 along the extending direction thereof. The plurality of warning flags 7 are arranged on the adjusting assembly 6 at intervals and are detachably connected with the fixed rod 4. The support rod 2 is provided with an air inlet hole 8, an air outlet hole 9 and an air exhaust hole 10. A connector for communicating with an air source is detachably arranged at the air inlet hole 8. The sound emitting assembly 5 comprises a support 11, a sound emitting member 12, a hose 13 and a plug 14. The top of the support 11 is provided with the fixed rod 4. The outer wall of the support 11 is detachably provided with the sound emitting member 12. The bottom of the support 11 is provided with the first elastic member 3 and the hose 13 for communicating with the sound emitting member 12. One end of the hose 13 away from the support 11 is fixedly connected with the support rod 2. The plug 14 is movably arranged in the hose 13 and is used for plugging the air outlet hole 9.

[0030] It should be noted that during the process of filling the aviation oil, the oil filler pipe fixing frame is usually used to support the pipe head of the oil filler pipe. Therefore, in the actual use process of the folding universal warning flagpole of the aviation oil pipeline refueling truck, the staff can install the support 1 to the oil filler pipe fixing frame through bolt connection or other methods, so as to set the support 1 close to the pipe head of the oil filler pipe, so that the plurality of warning flags 7 on the support 1 can move synchronously with the pipe head of the oil filler pipe, that is, no matter how the oil filler pipe is stretched, turned or moved, the plurality of warning flags 7 can always mark the position of the pipe head of the oil filler pipe in real time, thereby effectively ensuring the warning effect of the oil filler pipe on the surrounding environment during use. In addition, in the folding universal warning flagpole of the aviation oil pipeline refueling truck, one end of the support rod 2 is movably connected with the support 1, and the movable connection can be achieved by damping hinge or the like, so that the staff can rotate the support rod 2 relative to the support 1 to place the related structural components such as the fixing rod 4, the sound generating assembly 5 and the plurality of warning flags 7 on the oil filler pipe fixing frame, thereby reducing the occupied space, facilitating transportation, transportation and management, preventing the folding universal warning flagpole of the aviation oil pipeline refueling truck from blocking other equipment or making false warning information on the apron, and being convenient and reliable to use.

[0031] Specifically, as shown in Figures 1 to 10 the other end of the support rod 2 is provided with the fixing rod 4 through the first elastic member 3, the adjusting assembly 6 is movably installed on the fixing rod 4 along the extending direction thereof, and the plurality of warning flags 7 are arranged at intervals on the adjusting assembly 6. In the use process of the folding universal warning flagpole of the aviation oil pipeline refueling truck, the staff can rotate the support rod 2 relative to the support 1, so that the support rod 2 is vertically perpendicular to the oil filler pipe fixing frame, and the staff can also adjust the installation position of the adjusting assembly 6 on the fixing rod 4 to raise the plurality of warning flags 7 to a preset height, so as to remind the surrounding vehicles, ground personnel or equipment to pay attention to the fact that the refueling operation is in progress, effectively prevent them from entering the refueling operation area by mistake, ensure the warning effect on the surrounding environment, and improve the safety of the aviation oil filling process. In addition, the staff can flexibly adjust the height position of the adjusting assembly 6 on the fixing rod 4 according to the actual situation of the surrounding environment, so as to avoid the warning flags 7 from being blocked by external factors such as ground equipment or personnel, thereby improving the use flexibility and adaptability to the surrounding environment. Further, the first elastic member 3 can be a spring in the prior art, which has the characteristics of compact structure, easy to obtain and large elastic recovery force. When the fixing rod 4 or the warning flag 7 is subjected to collision, the first elastic member 3 is elongated under the action of the external impact object. When the external impact object is removed, the fixing rod 4 can be automatically reset by the elastic recovery force of the first elastic member 3, so as to ensure that the plurality of warning flags 7 on the adjusting assembly 6 have a continuous and effective warning effect on the surrounding environment, without the need for manual intervention or re-adjustment of the installation position of the fixing rod 4, thereby reducing the labor intensity of the staff and being convenient to use.

[0032] Understandably, since the bottom of the fixed rod 4 is provided with the sound emitting assembly 5, and the sound emitting assembly 5 is communicated with the external air source, wherein the sound emitting assembly 5 and the external air source can be respectively a whistle and an air bag, the external air bag is arranged below the fixed rod 4, when the fixed rod 4 is subjected to a collision, at this time, the fixed rod 4 is deflected relative to the support rod 2, so that the external air source can be compressed and air flow is blown out to the sound emitting assembly 5, so that the surrounding environment can be actively sounded to remind the surrounding ground equipment or staff to pay attention to the collision of the refueling pipe and to prevent the external impact object from continuing to move, so as to facilitate the staff to make a quick response after the collision accident. Obviously, the folding universal warning flagpole of the aviation oil pipeline refueling truck actively alarms after the collision through the sound emitting assembly 5 communicated with the external air source, and does not depend on external power supply at all, which eliminates the risk of electric spark, meets the explosion-proof requirement of the aviation fueling operation scene, reduces the safety hidden danger, and significantly improves the safety of the aviation fueling process.

[0033] In addition, as shown in Figure 1 、 Figures 6 to 9 , the mounting mode of the support 11 in the sound emitting assembly 5 and the fixed rod 4 can be threaded connection, so that the fixed rod 4 and the support 11 can be stably connected, and the fixed rod 4 can be easily disassembled and assembled, which is convenient for maintenance. Meanwhile, the sound emitting piece 12 (such as a whistle) detachably mounted on the outer wall of the support 11 can also be threaded connection, so that the sound emitting piece 12 can be easily replaced or repaired. Understandably, when the fixed rod 4 is subjected to a collision and is deflected relative to the support rod 2, at this time, the first elastic member 3 at the bottom of the support 11 and the hose 13 are synchronously stretched, and since the plug 14 is movably mounted in the hose 13, the plug 14 can be displaced with the hose 13 to remove the plugging of the air outlet hole 9, so that the air flow output from the external air source can enter the sound emitting piece 12 through the air outlet hole 9 and the hose 13 and drive the sound emitting piece 12 to emit a collision alarm, so as to remind the surrounding ground equipment or staff, facilitate the quick response to the collision accident, and improve the safety of the aviation fueling. When the external impact object moves away, at this time, the fixed rod 4 is automatically reset under the action of the first elastic member 3 and drives the plug 14 to move to re-plug the air outlet hole 9, so as to block the air flow input of the sound emitting piece 12 and make the sound emitting piece 12 stop emitting the collision alarm, so as to avoid the sound emitting piece 12 from emitting false alarm information, which is reliable in use. At this time, the air flow output from the external air source can be sent out through the exhaust hole 10, which is simple and reasonable in structure design. It should be noted that the external air source can also be the air source on the refueling truck to supply air flow to the sound emitting piece 12. Compared with the air bag, the air source on the refueling truck can ensure the continuity of the alarm of the sound emitting piece 12 when the collision accident occurs, so as to further ensure the active alarm effect of the folding universal warning flagpole of the aviation oil pipeline refueling truck under the condition of no electric spark risk, and significantly improve the reliability in use.

[0034] In an embodiment, the support 11 is provided with a gas conveying passage 15 in communication with the sound generating member 12 and the hose 13, and the gas conveying passage 15 is provided with a grid plate 16 at one end close to the hose 13, and the grid plate 16 is provided with a second elastic member 17, and the second elastic member 17 is provided with the plug 14 at one end away from the grid plate 16.

[0035] Specifically, as shown in Figure 8 and Figure 9 , the gas conveying passage 15 provided in the support 11 can be used in cooperation with the hose 13 to ensure continuous and stable conveying of gas flow to the sound generating member 12, and the structure design is simple and reasonable. Further, since the gas conveying passage 15 is provided with the grid plate 16 at one end close to the hose 13, the grid plate 16 can support the second elastic member 17 and maintain the smooth passage of gas flow through the grid structure; at the same time, one end of the second elastic member 17 (which can be a high-strength spring) is fixed to the grid plate 16, and the other end is connected with the plug 14, and the elastic pre-tightening force of the second elastic member 17 can make the plug 14 in a state of tightly plugging the gas outlet hole 9 in normal state, so as to ensure that the gas path is closed, avoiding false alarm of the sound generating member 12; when the fixed rod 4 is deflected by collision, the second elastic member 17 is bent and deformed in the hose 13, and under the action of its own resilience, the plug 14 is pulled to produce transverse displacement to unblock the gas outlet hole 9, so that the gas flow can enter the gas conveying passage 15 through the hose 13 to drive the sound generating member 12 to alarm, and when the collision ends, the first elastic member 3 drives the fixed rod 4 and other related components to reset to the initial position under the action of its own resilience, and the second elastic member 17 on the grid plate 16 simultaneously drives the plug 14 to automatically reset and re-plug the gas outlet hole 9, thereby realizing immediate triggering and stopping of the alarm, and improving the timeliness and reliability of the collision alarm.

[0036] It is worth noting that, from the stress analysis results of the second elastic member 17 in use, as shown in Figure 8 , when the fixed rod 4 is not deflected by collision, the second elastic member 17 is in a state of approximate vertical compression or pre-tightening straightening, and the plug 14 connected at one end away from the grid plate 16 is partially embedded into the gas outlet hole 9 and tightly plugs the gas outlet hole 9 under the action of elastic force. As shown in Figure 8 and Figure 9When the fixed rod 4 is subjected to a collision and deflection, a lateral pulling force or pushing force (depending on the direction of the collision) is transmitted through the support 11 and the hose 13 to the grid plate 16, and then to the second elastic member 17, which is not subjected to axial compression or stretching but lateral bending deformation when subjected to the force. However, since one end of the second elastic member 17 is fixedly connected to the grid plate 16 and the other end of the second elastic member 17 is freely movable and connected to the plug 14, when the second elastic member 17 is bent and deformed, the other end of the second elastic member 17 will be displaced laterally under the elastic force of the second elastic member 17 itself, and based on this lateral displacement, the second elastic member 17 can directly drive the plug 14 to "pull out" or "move away" from the air outlet hole 9, thereby opening the air outlet hole 9, so that the airflow output by the air source on the refueling truck can be delivered to the sound-producing member 12 through the air outlet hole 9 and an alarm can be sounded. At the same time, in this process, the hose 13 mainly seals the air path to prevent air leakage and ensure the stability and reliability of the sound-producing member 12, and the wrinkles produced by the bending of the hose 13 (the wrinkles extend towards the plug 14) can also assist the plug 14 in separating from the air outlet hole 9 to open the air path. In addition, in the actual production and manufacturing process of the folding universal warning flag pole of the aviation oil pipeline refueling truck, in order to ensure that the second elastic member 17 can effectively bend and deform as a whole and produce lateral displacement under the action of the lateral force, the second elastic member 17 is preferably made of a spring steel material with a high elastic limit (such as a piano wire or an oil quenched and tempered valve spring steel wire) and has a large aspect ratio (length to diameter ratio). Thus, the second elastic member 17 can elastically bend as a whole after being stressed, rather than plastically hinge at a stress concentration point, thereby reliably driving the plug 14 to produce lateral displacement and separate from the air outlet hole 9.

[0037] In an embodiment, the sound-producing member 12 includes a housing 18, a turbine 19, and a cover plate 20, the housing 18 has an air inlet pipe 21 formed thereon and detachably connected to the support 11, the turbine 19 is rotatably installed in the housing 18, and the housing 18 has a plurality of air outlet holes 22 uniformly and spacedly formed in the side wall thereof and detachably installed with the cover plate 20. Specifically, as shown in Figure 1 、 Figures 6 to 10As shown, the shell 18 is detachably connected (e.g., flange connection) with the support 11 through the air inlet pipe 21, thereby facilitating quick disassembly, maintenance or replacement. Further, since the turbine 19 is rotatably installed in the shell 18, when the airflow impacts the turbine 19 through the air inlet pipe 21, the turbine 19 rotates at high speed and disturbs the airflow, thereby being able to generate high-frequency vibration sound waves, and thus emitting and amplifying the alarm volume through acoustic principles; and the several air outlets 22 evenly and uniformly spaced on the side wall of the shell 18 can not only ensure efficient diffusion of the airflow, but also reduce airflow resistance through the porous design, avoiding blockage of the air path inside the shell 18, and the structural design is simple and reasonable. In addition, the detachable cover plate 20 on the side wall of the shell 18 can facilitate the opening of the shell 18 by the staff to disassemble, replace or maintain the turbine 19; at the same time, a wrench can be provided on the side wall of the cover plate 20 for the staff to disassemble, which is beneficial to operation.

[0038] In an embodiment, the turbine 19 includes a mounting portion 23 and several blades 24, the mounting portion 23 is rotatably connected with the shell 18, the outer wall of the mounting portion 23 is uniformly and evenly provided with several blades 24 along the circumference thereof, and the mounting portion 23 is provided with a groove 25, and the sound generating member 12 further includes a whistle ball 26 arranged in the groove 25, and the cover plate 20 is provided with a partition plate extending into the groove 25. Specifically, as shown Figures 6 to 10 As shown, by rotatably connecting the mounting portion 23 with the shell 18, the rotational stability of the turbine 19 can be ensured, and the several blades 24 uniformly and evenly arranged on the outer wall of the mounting portion 23 can effectively capture the energy of the airflow, thereby driving the turbine 19 to rotate at high speed and smoothly. Further, since the whistle ball 26 is arranged in the groove 25 of the mounting portion 23, when the turbine 19 rotates, the whistle ball 26 rolls in the groove 25 under the centrifugal action and collides with the partition plate on the cover plate 20, thereby being able to generate high-frequency flutter sound waves, and the noise generated by the cutting of the airflow by the blades 24 of the turbine 19 is superimposed, thereby being able to form a composite acoustic effect, thereby significantly enhancing the alarm volume, penetration and recognition of the sound generating member 12, and the use is reliable.

[0039] In an embodiment, the adjusting assembly 6 includes a lifting seat 27, a locking member 28 and a sleeve 29, the lifting seat 27 is movably sleeved on the fixed rod 4 through the locking member 28, the lifting seat 27 is uniformly and evenly hinged with several warning flags 7 along the circumference thereof, and the sleeve 29 is detachably connected with the lifting seat 27 and used to push and rotate the several warning flags 7 relative to the fixed rod 4.

[0040] Specifically, as shown Figures 1 to 5As shown, the lifting seat 27 is sleeved on the fixed rod 4 through the locking member 28 (such as a bolt or a quick release mechanism), so that the operator can quickly adjust the overall height of the warning flag 7 according to the visual field requirement of the aviation oil filling site, and firmly fix it through the locking member 28, so as to avoid that the lifting seat 27 drives the warning flag 7 to move unexpectedly due to vibration or wind force in the use process, and the structure design is simple and reasonable. Further, since the lifting seat 27 is uniformly and spacedly hinged with a plurality of warning flags 7 along the circumference thereof, and the sleeve 29 is detachably connected with the lifting seat 27, the detachable connection between the sleeve 29 and the lifting seat 27 can be screw connection, so that the worker can rotate the sleeve 29 to push and chase the synchronous swinging of each warning flag 7 relative to the fixed rod 4. For example, when it is needed to unfold each warning flag 7, the worker can rotate the sleeve 29 to move it away from the warning flag 7, at this time, each warning flag 7 rotates to the unfolded state of horizontal or inclination under the action of gravity to warn the surrounding environment; when it is needed to fold each warning flag 7, the sleeve 29 is rotated towards the warning flag 7, at this time, the sleeve 29 can force each warning flag 7 to swing to the outer wall of the fixed rod 4, and the worker can wrap the flag surface of each warning flag 7 around the fixed rod 4, so as to not only reduce the space occupation volume of each warning flag 7, facilitate transportation, but also avoid that the warning flag 7 is polluted by external impurities to affect the warning effect, and the use is reliable. Obviously, the folding universal warning flag rod of the aviation oil pipeline refueling vehicle of the present application can operate the sleeve 29 without the worker unfolding and folding each warning flag 7 in sequence, which simplifies the operation steps and improves the work efficiency.

[0041] In an embodiment, the adjusting assembly 6 further comprises a snap ring 30, the snap ring 30 is arranged at the top of the fixed rod 4, the snap ring 30 is provided with a clamping groove corresponding to the position of each warning flag 7; a plurality of warning flags 7 are respectively provided with a stop ring 31 abutting against the inner wall of the sleeve 29 and the outer wall of the fixed rod 4. Specifically, as shown, Figures 1 to 5 Since the snap ring 30 is arranged at the top of the fixed rod 4, the clamping groove corresponding to the position of each warning flag 7 can be embedded with the rod body of the warning flag 7 to achieve mechanical locking when the warning flag 7 is in the folded state, so as to prevent the warning flag 7 from being accidentally unfolded to cause winding or damage during transportation or non-working state. Further, when the plurality of warning flags 7 are in the folded state, the stop ring 31 abuts against the inner wall of the sleeve 29, so as to limit the outward rotation of the warning flag 7 away from the fixed rod 4, and improve the installation stability of the warning flag 7 in the folded state on the fixed rod 4.

[0042] In an embodiment, the top of the support 1 is provided with a mounting hole 32 which is inserted and matched with the support rod 2, the hole wall of the mounting hole 32 is provided with a limiting groove 33, the bottom of the support rod 2 is provided with a connecting piece 34 which is inserted into the limiting groove 33, and the hole opening of the mounting hole 32 is provided with a gap groove 35 for the support rod 2 to extend into. Specifically, as shown in Figures 1 to 4 the insertion and matching of the support rod 2 and the mounting hole 32 can ensure the support stability of the support 1 to the support rod 2, and prevent the support rod 2 from accidentally falling during use. Further, since the bottom of the support rod 2 is provided with the connecting piece 34 which is inserted into the limiting groove 33, not only can the support rod 2 be prevented from being separated from the mounting hole 32, and the connection stability of the support rod 2 and the support 1 is improved, but also the support rod 2 can be pulled along the extension direction of the limiting groove 33 to rotate and be embedded into the gap groove 35, thereby realizing the folding of the support rod 2 relative to the support 1 and being placed on the refueling pipe fixing frame, thereby reducing the space occupation volume of the folding universal warning flag pole of the present application, facilitating transportation and handling, and the structure design is simple and reasonable.

[0043] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A foldable universal warning flagpole for aviation fuel pipeline refueling truck, characterized by: The utility model provides a kind of warning flag, including support (1), support rod (2), first elastic member (3), fixed rod (4), sound-producing assembly (5), adjusting assembly (6) and several warning flags (7), the support (1) is close to the pipe head of oil filling pipe arrangement, one end of the support rod (2) is movably connected with the support (1), the other end of the support rod (2) is installed with the fixed rod (4) by the first elastic member (3), the bottom of the fixed rod (4) is detachably installed with the sound-producing assembly (5), and the fixed rod (4) is movably installed with the adjusting assembly (6) along its extension direction, several warning flags (7) are arranged on the adjusting assembly (6) and are detachably connected with the fixed rod (4) with interval; Air inlet hole (8), air outlet hole (9) and exhaust hole (10) are formed in the support rod (2), a joint for communicating with a gas source is detachably installed at the air inlet hole (8); the sound-producing assembly (5) includes a support (11), a sound-producing member (12), a hose (13) and a plug (14), the support (11) is provided with the fixed rod (4) at the top, the sound-producing member (12) is detachably installed on the outer wall of the support (11), the first elastic member (3) and the hose (13) for communicating with the sound-producing member (12) are arranged at the bottom of the support (11), one end of the hose (13) away from the support (11) is fixedly connected with the support rod (2), and the plug (14) is movably installed in the hose (13) and used for plugging the air outlet hole (9).

2. The folding universal warning flag pole for a fuel line truck of claim 1, wherein, A gas conveying passage (15) for communicating with the sound-producing member (12) and the hose (13) is formed in the support (11), a grid plate (16) is arranged at one end of the gas conveying passage (15) close to the hose (13), a second elastic member (17) is arranged on the grid plate (16), and the plug (14) is arranged at one end of the second elastic member (17) away from the grid plate (16).

3. The folding universal warning flag pole for a fuel line truck of claim 2, wherein, The sound-producing member (12) includes a housing (18), a turbine (19) and a cover plate (20), the housing (18) is formed with an air inlet pipe (21) detachably connected with the support (11), the turbine (19) is rotatably installed in the housing (18), and a plurality of air outlets (22) are uniformly and intermittently formed in the side wall of the housing (18) along the circumferential direction and detachably installed with the cover plate (20).

4. The folding universal warning flag pole for a fuel line truck of claim 3, wherein, The turbine (19) includes a mounting portion (23) and a plurality of blades (24), the mounting portion (23) is rotatably connected with the housing (18), a plurality of the blades (24) are uniformly and intermittently arranged on the outer wall of the mounting portion (23) along the circumferential direction, and a recess (25) is formed in the mounting portion (23), the sound-producing member (12) further includes a whistle ball (26) arranged in the recess (25), and the cover plate (20) is provided with a partition plate extending into the recess (25).

5. The folding universal warning flag pole for a fuel line truck of claim 1, wherein, The adjusting assembly (6) comprises a lifting seat (27), a locking piece (28) and a sleeve (29), the lifting seat (27) is movably sleeved on the fixed rod (4) through the locking piece (28), a plurality of warning flags (7) are uniformly and spacedly hinged on the lifting seat (27) in the circumferential direction, and the sleeve (29) is detachably connected with the lifting seat (27) and is used for pushing and driving the plurality of warning flags (7) to rotate relative to the fixed rod (4).

6. The folding universal warning flag pole for a fuel line truck of claim 5, wherein, The adjusting assembly (6) further comprises a snap ring (30), the snap ring (30) is arranged at the top of the fixed rod (4), and the snap ring (30) is provided with a clamping groove corresponding to the positions of the plurality of warning flags (7); and a plurality of stop rings (31) are respectively arranged on the plurality of warning flags (7) and abut against the inner wall of the sleeve (29) and the outer wall of the fixed rod (4).

7. The folding universal warning flag pole for a fuel service vehicle as set forth in any one of claims 1-6, wherein, A mounting hole (32) is arranged at the top of the support (1) and is inserted and matched with the support rod (2), a limiting groove (33) is arranged on the hole wall of the mounting hole (32), a connecting piece (34) is arranged at the bottom of the support rod (2) and penetrates through the limiting groove (33), and a gap groove (35) is arranged at the hole opening of the mounting hole (32) and is used for the support rod (2) to extend into.

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