Folding universal warning flag pole for fuel line truck

Abstract

The application discloses a folding universal warning flag pole of a fuel oil pipeline tanker, and belongs to the technical field of warning flags of the tanker, which comprises a support, a supporting rod, a first elastic member, a fixing rod, a sound-emitting assembly, an adjusting assembly and a plurality of warning flags, the support is arranged close to the pipe head of a fuel oil pipeline, one end of the supporting rod is movably connected with the support, the other end of the supporting rod is provided with the fixing rod through the first elastic member, the bottom of the fixing rod is provided with the sound-emitting assembly, the fixing rod is provided with the adjusting assembly, and the plurality of warning flags are arranged on the adjusting assembly and detachably connected with the fixing rod. The sound-emitting assembly can actively send a sound alarm to the surrounding environment, so that the staff can make a quick response after a collision accident; the sound-emitting assembly is communicated with an external air source to realize active alarm, and the application does not depend on external power supply at all, thereby eliminating the risk of electrical sparks, meeting the explosion-proof requirement of an aviation fuel oil filling operation scene, and significantly improving the safety of the aviation fuel oil filling process.

Description

Technical Field

[0001] This invention relates to the field of warning flag technology for refueling trucks, and more particularly to folding universal warning flagpoles for aviation fuel pipeline refueling trucks. Background Technology

[0002] During aviation fuel refueling operations, refueling trucks need to move frequently on the apron and deliver fuel to aircraft through exposed refueling hoses. Due to the complex apron environment, which involves various vehicles, ground staff, and equipment working together, the refueling hoses, when extended, can easily become potential collision points. Without appropriate warning and protective measures, this can easily lead to fuel leaks, equipment damage, or even safety accidents.

[0003] Existing warning and protective measures mainly rely on simple markings such as fixed warning signs and cones. While these methods serve a warning purpose, they also have limitations. For example, they lack a rapid response mechanism: firstly, when the refueling hose is accidentally bumped by a vehicle or equipment, emergency warning functions such as audible and visual alarms cannot be automatically triggered, easily delaying risk identification and response; secondly, when warning and protective measures are impacted, they often tip over or shift, making it difficult to automatically return to their original warning position, resulting in interruption of the warning function and posing a continuous hazard to subsequent aviation fuel refueling operations. Furthermore, existing warning devices incorporating audible and visual alarm functions typically rely on external power supplies, posing a risk of electrical sparks. In scenarios like aviation fuel refueling, where explosion-proof requirements are extremely stringent, the use of any non-explosion-proof electrical components can easily lead to serious safety hazards. Therefore, there is an urgent need to design a folding universal warning flagpole for aviation fuel pipeline refueling trucks to improve the safety of aviation fuel refueling operations. Summary of the Invention

[0004] The main objective of this invention is to overcome the deficiencies of the existing technology and provide a foldable universal warning flagpole for aviation fuel pipeline refueling trucks that has active warning and automatic reset functions, does not rely on external power supply, has no risk of electrical sparks, meets the explosion-proof requirements of aviation fuel refueling operation scenarios, and can improve the safety of aviation fuel refueling process.

[0005] To achieve the above objectives, the present invention provides a folding universal warning flagpole for an aviation fuel pipeline refueling vehicle, comprising a bracket, a support rod, a first elastic element, a fixed rod, a sound-generating component, an adjustment component, and a plurality of warning flags. The bracket is positioned near the end of the refueling pipe. One end of the support rod is movably connected to the bracket, and the other end of the support rod is mounted to the fixed rod via the first elastic element. The sound-generating component is detachably mounted on the bottom of the fixed rod, and the adjustment component is movably mounted on the fixed rod along its extension direction. A plurality of warning flags are spaced apart on the adjustment component and detachably connected to the fixed rod.

[0006] 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.

[0007] 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.

[0008] 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.

[0009] 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.

[0010] 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.

[0011] 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.

[0012] Preferably, the top of the bracket 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.

[0013] Beneficial effects:

[0014] 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.

[0015] 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.

[0016] 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.

[0017] 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.

[0018] 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.

[0019] 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.

[0020] 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

[0021] 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.

[0022] 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;

[0023] 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;

[0024] Figure 3 is Figure 2 is an enlarged view of part A in FIG. 5;

[0025] 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;

[0026] Figure 5 is Figure 4 is an enlarged view of part B in FIG. 6;

[0027] 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;

[0028] Figure 7 is Figure 6 is a sectional view of part C-C in FIG. 7;

[0029] Figure 8 is Figure 7 is an enlarged view of part D in FIG. 8;

[0030] Figure 9 is based on Figure 8 is a force change diagram of the second elastic member after the fixed rod in FIG. 9 is subjected to collision and tilting deflection;

[0031] Figure 10It is a structure schematic view of the sound generating component in the folding universal warning flag rod of the refueling vehicle of the refueling pipeline in an embodiment of the application.

[0032] In the figure: 1- support; 2- support rod; 3- first elastic member; 4- fixed rod; 5- sound generating component; 6- adjusting component; 7- warning flag; 8- air inlet hole; 9- air outlet hole; 10- air 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

[0033] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of 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.

[0034] 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 application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0035] 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.

[0036] 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 indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the application is used, 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, the terms "first", "second" and the like appear in the description of the present application only for distinction, and cannot be understood as indicating or implying relative importance.

[0037] 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 than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0038] In the description of the present application, it should be noted that, unless otherwise specified and limited, if the terms "set", "install", "connect", "connect" 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.

[0039] Embodiment 1:

[0040] The present application provides a folding universal warning flagpole for a fuel pipeline refueling truck.

[0041] In an embodiment of the present application, the folding universal warning flagpole for a fuel pipeline refueling truck 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 refueling 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.

[0042] The support rod 2 is provided with an air inlet hole 8, an air outlet hole 9 and an air exhaust hole 10. The air inlet hole 8 is detachably provided with a connector which is in communication with an air source. 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 which is in communication 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.

[0043] 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.

[0044] 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.

[0045] 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.

[0046] 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 screw 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 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 screw 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, and at this time, the air flow output from the external air source can be discharged 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.

[0047] In an embodiment, the support 11 is provided with a gas conveying passage 15 therein, which is in communication with the sound generating member 12 and the hose 13. The gas conveying passage 15 is provided with a grid plate 16 at one end close to the hose 13. The grid plate 16 is provided with a second elastic member 17. The second elastic member 17 is provided with a plug 14 at one end away from the grid plate 16.

[0048] Specifically, as shown in Figure 8 and Figure 9 , the gas conveying passage 15 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. The structure design is simple and reasonable. Further, 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 smooth passage of gas flow through the grid structure. Meanwhile, 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. 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 and avoid 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 unplug 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. 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.

[0049] It is worth noting that, from the stress analysis result 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. 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.

[0050] 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.

[0051] 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 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 evenly and uniformly 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.

[0052] 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.

[0053] 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.

[0054] 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; each warning flag 7 is 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 As shown, 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.

[0055] 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 inserted and matched support rod 2 and the mounting hole 32 can ensure the support stability of the support rod 2 by the support 1, 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.

[0056] 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. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A folding universal warning flagpole for an aviation fuel pipeline refueling truck, characterized in that, The utility model provides a kind of warning device for oil truck, 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 oiling 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), and a connector for communicating with the air source of the oil truck 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 top of the support (11) is provided with the fixed rod (4), the outer wall of the support (11) is detachably installed with the sound-producing member (12), the bottom of the support (11) is provided with the first elastic member (3) and the hose (13) communicating with the sound-producing member (12), 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); A gas conveying passage (15) communicating with the sound-producing member (12) and the hose (13) is formed in the support (11), the gas conveying passage (15) is used for guiding the airflow from the air source conveyed by the hose (13) to the sound-producing member (12) when the plug (14) unblocks the air outlet hole (9); one end of the gas conveying passage (15) close to the hose (13) is provided with a grid plate (16), the grid plate (16) is provided with a second elastic member (17), one end of the second elastic member (17) away from the grid plate (16) is provided with the plug (14); the second elastic member (17) makes the plug (14) tightly plug the air outlet hole (9) by elastic pre-tightening force in normal state, when the fixed rod (4) is deflected relative to the support rod (2) due to collision, the second elastic member (17) is bent and deformed with the hose (13) stretched and drives the plug (14) to displace to unblock the air outlet hole (9), so that the air source airflow enters the sound-producing member (12) through the air outlet hole (9), the hose (13) and the gas conveying passage (15) in sequence, to drive the sound-producing member (12) to emit collision alarm.

2. The folding universal warning flag pole for a fuel line truck of claim 1, wherein, The sound producing piece (12) comprises a shell (18), a turbine (19) and a cover plate (20), the shell (18) is formed with an air inlet pipe (21) detachably connected with the support (11), the turbine (19) is rotatably installed in the shell (18), and a plurality of air outlets (22) are uniformly and spacedly formed on the side wall of the shell (18) in the circumferential direction, and the cover plate (20) is detachably installed.

3. The folding universal warning flag pole for a fuel line truck of claim 2, wherein, The turbine (19) comprises a mounting portion (23) and a plurality of blades (24), the mounting portion (23) is rotatably connected with the shell (18), a plurality of the blades (24) are uniformly and spacedly arranged on the outer wall of the mounting portion (23) in the circumferential direction, and a recess (25) is formed on the mounting portion (23), the sound producing piece (12) further comprises 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).

4. 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 fixing rod (4) through the locking piece (28), a plurality of the 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 a plurality of the warning flags (7) to rotate relative to the fixing rod (4).

5. The folding universal warning flag pole for a fuel line truck as set forth in claim 4, wherein, The adjusting assembly (6) further comprises a clamping ring (30), the clamping ring (30) is arranged on the top of the fixing rod (4), and a clamping groove is formed on the clamping ring (30) corresponding to the positions of a plurality of the warning flags (7); a plurality of the 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 fixing rod (4).

6. The folding universal warning flag pole for a fuel service vehicle as set forth in any one of claims 1-5, wherein, The top of the support (1) is provided with a mounting hole (32) inserted and matched with the support rod (2), a limiting groove (33) is formed on the hole wall of the mounting hole (32), the bottom of the support rod (2) is provided with a connecting piece (34) penetrating into the limiting groove (33), and a gap groove (35) is formed at the hole opening of the mounting hole (32) for the support rod (2) to extend into.

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