A folding cleaning arm for an oil tank cleaning apparatus

Abstract

The utility model relates to oil tank cleaning equipment, especially an oil tank cleaning equipment folding cleaning arm, the utility model provides an oil tank cleaning equipment folding cleaning arm, include: a stand, the stand is connected with the beginning of telescopic column through the connecting column and rotation connection subassembly, the end of telescopic column is provided with the cleaning head, the cleaning head is connected with the output end of cleaning medium conveying device through the delivery pipe, the input end of cleaning medium conveying device is contacted with cleaning medium, and the outermost layer of telescopic column still is provided with the pull rope, the length of pull rope is greater than the height of stand. In view of this, the utility model provides the oil tank cleaning equipment folding cleaning arm with folding function and convenient storage.

Description

Technical Field

[0001] This utility model relates to oil tank cleaning equipment, and more particularly to a folding cleaning arm for oil tank cleaning equipment. Background Technology

[0002] In oil tank cleaning operations, traditional cleaning equipment typically suffers from fixed structures and insufficient flexibility, making it difficult to adapt to the complex internal structures of oil tanks of different sizes. This results in numerous cleaning blind spots and low efficiency. Existing cleaning arms mostly employ a single telescopic structure with limited folding performance, occupying a large amount of space during transportation and storage, thus limiting their practicality. Utility Model Content

[0003] In view of this, the present invention provides a folding cleaning arm for oil tank cleaning equipment; the purpose is to provide a folding cleaning arm for oil tank cleaning equipment with folding function and easy storage.

[0004] This utility model provides a folding cleaning arm for oil tank cleaning equipment, characterized in that it includes: a column, the column being connected to the beginning end of a telescopic column via a connecting column and a rotating connecting assembly, the end of the telescopic column being provided with a cleaning head, the cleaning head being connected to the output end of a cleaning medium conveying device via a conveying pipe, the input end of the cleaning medium conveying device being in contact with the cleaning medium, and the outermost layer of the telescopic column being provided with a pull rope, the length of which is greater than the height of the column; At least one set of fixing cables is provided on the inner wall of the top surface of the column, which is parallel to the connecting column. A fixing plate is provided on the fixing cable, and the fixing plate is located below the rotating connecting assembly. The rotating connection assembly includes a connector and a connecting column. The beginning end of the connecting column is connected to the inner wall of the top surface of the column. The end of the connecting column is provided with a spherical connector, and the connector is rotatably connected to the beginning end of the connector. The end of the connector is connected to the beginning end of the telescopic column.

[0005] Furthermore, it also includes a tensioning assembly, on which the fixing cable is wound, and the spool is connected to a tensioning motor.

[0006] Furthermore, it also includes a rope control device, which is disposed on the upper part of the column. The end of the pull rope is arranged around the roller of the rope control device, and the roller is connected to the rope control motor.

[0007] Furthermore, the upper part of the column is provided with at least one support component.

[0008] Furthermore, the support component is a retractable mechanism.

[0009] Furthermore, the connector has a rotating groove corresponding to the movement trajectory of the connecting column.

[0010] Furthermore, the rotating connection assembly includes a connector and a connecting column. The starting end of the connecting column is connected to the inner wall of the top surface of the column. The end of the connecting column is provided with a spherical connector, and the end of the connector is rotatably connected to the starting end of the connector. The connector extends with a safety post corresponding to the direction of the connector. The end of the safety post is provided with a convex circle. The connector is provided with a safety groove corresponding to the position of the convex circle. The convex circle is engaged and rotatably disposed in the safety groove. The end of the connector is connected to the starting end of the telescopic column.

[0011] Furthermore, multiple engaging components are provided on the outer surfaces of both the upright column and the telescopic column, and the conveying pipe is engaging within the engaging components.

[0012] Furthermore, multiple limiting components are provided on the outer surface of the column, and the pull rope is movably disposed within the limiting components.

[0013] The beneficial effects of this utility model are as follows: 1. This utility model employs a column, connecting column, rotating connecting assembly, telescopic column, and cleaning head, solving the problems of fixed structure and insufficient flexibility of traditional cleaning equipment's cleaning arm. When starting the cleaning operation, first adjust the telescopic length of the support assembly according to the actual diameter of the oil tank opening to fit the tank opening size; then, extend the column, along with the telescopic column connected to it via the rotating connecting assembly and the connecting column, and the cleaning head, into the oil tank. At this point, the support assembly is precisely positioned at the edge of the oil tank opening. The support assembly can be limited using conventional fixing methods such as buckles and bolts to ensure the column remains in place. The initial stability of the column within the oil tank is assessed. Next, the controller activates the rope control motor of the rope control device, driving the rollers to precisely tighten the pull rope (the pull rope is guided along the limiting components outside the column to prevent deviation and entanglement). Under the traction of the pull rope, the connector rotates around the spherical connector until its upper surface is tightly against the bottom surface of the column, causing the telescopic column to initially present a perpendicular posture to the column. At this point, the tensioning component responds synchronously, the tensioning motor drives the spool to wind up the fixing cable, causing the fixing plate to rise along the fixing cable guide, ultimately supporting the bottom surface of the connector. Through this action... The rotating connection assembly is locked between the fixed plate and the column, ensuring its position and maintaining a stable right angle between the telescopic column and the column. This effectively prevents the telescopic column from shifting due to media spray pressure or equipment vibration during cleaning operations, ensuring operational accuracy. After the cleaning process officially starts, the cleaning media conveying device pressurizes the cleaning fluid or high-pressure water and delivers it directionally to the cleaning head through a conveying pipe pre-locked and fixed to the outer surface of the column and telescopic column. The cleaning head sprays high-pressure media onto the oil residue areas on the inner wall of the tank according to the preset cleaning path, achieving targeted rinsing and thorough removal. Impurities inside the tank; after the cleaning operation is completed, the equipment can be removed by reversing the process: first, control the tension motor to loosen the fixing cable, so that the fixing plate is detached from the support of the connector; then, drive the wire roller through the rope control motor to loosen the rope, so that the telescopic column rotates around the connector to a storage posture parallel to the column; finally, release the fixing of the support component at the oil tank opening, and smoothly remove the column along with the telescopic column and cleaning head from the oil tank. It is adaptable to the structure of oil tanks of different sizes, reduces cleaning dead corners, and improves cleaning efficiency; the rope length is adapted to the column height to ensure smooth use and improve the practicality of this utility model.

[0014] 2. This utility model uses a tension motor-driven spool to unwind and rewind the fixing cable, causing the fixing plate to rise along the cable guide and finally support the bottom surface of the connector. Through the above structure, the rotating connecting component is relatively locked between the fixing plate and the column, thus locking its position. This ensures that the telescopic column and the column remain relatively stable at a right angle, effectively avoiding the displacement of the telescopic column caused by the pressure of the media spray or equipment vibration during cleaning operations, ensuring operational accuracy, and improving the convenience and practicality of this utility model.

[0015] 3. This utility model uses a rope control motor to drive the wire roller to retract and extend the pull rope. The controller starts the rope control motor of the rope control device, driving the wire roller to precisely tighten the pull rope. The pull rope moves along the limiting component outside the column to avoid deviation and entanglement. Under the traction force of the pull rope, the connector rotates around the ball-shaped connector as the center of rotation until the upper surface of the connector is tightly attached to the bottom surface of the column, so that the telescopic column initially presents a perpendicular posture to the column, realizing the retraction and extension operation of the pull rope. This saves manpower, improves the stability of the support, and reduces labor intensity. It avoids uneven force caused by manual pulling of the pull rope, reduces equipment wear, improves operational safety, and enhances the convenience and practicality of this utility model.

[0016] 4. This utility model enhances the overall stability of the equipment during operation by using a support component on the upper part of the column to support the edge of the oil tank opening, preventing the column from shaking and affecting the cleaning accuracy; it provides a reliable support point for the equipment, reducing the risk of tipping over during operation; and the telescopic characteristics of the support component allow it to adapt to oil tank openings of different diameters, expanding the scope of application of this utility model and improving its practicality and convenience.

[0017] 5. This utility model limits the movement trajectory of the connecting column by using the rotating groove on the connector, avoiding collision and wear between the connector and the connector, and effectively reducing the maintenance cost of this utility model.

[0018] 6. This utility model uses the convex circle of the safety post to engage with the safety groove of the connector, forming a double-limiting structure to prevent the connector from falling off during rotation and improve operational safety; it enhances connection reliability without affecting rotational flexibility, and improves the practicality and safety of this utility model when used in high-pressure cleaning and other working conditions.

[0019] 7. This utility model uses a snap-fit ​​assembly to fix the conveying pipe to the surface of the column and telescopic column, avoiding shaking and friction of the conveying pipe due to equipment movement or medium pressure, reducing pipe wear and leakage risks; ensuring the stability of the cleaning medium conveying path, improving the continuity and reliability of cleaning operations, and reducing maintenance costs.

[0020] 8. This utility model uses a limiting component to guide and constrain the pull rope, preventing it from tangling, shifting, or rubbing against other components, ensuring precise pull rope retraction and release; guaranteeing stable operation during use, reducing equipment failure rate, and improving overall work efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall side view structure of this utility model; Figure 2 This is a side sectional view of the first form of the first embodiment of the present utility model; Figure 3This is a side sectional view of the second form of the first embodiment of the present invention; Figure 4 This is a cross-sectional view of the first form of the second embodiment of the present invention. Figure 5 for Figure 4 An enlarged schematic diagram of structure A in the middle.

[0022] Reference numerals: 1. Column, 2. Connecting column, 3. Rotating connecting assembly, 4. Telescopic column, 5. Cleaning head, 6. Conveying pipe, 7. Pull rope, 8. Fixing cable, 9. Fixing plate, 10. Connector, 11. Connector head, 12. Tensioning assembly, 13. Bollard, 14. Roller, 15. Rope control motor, 16. Support assembly, 17. Rotating groove, 18. Safety column, 19. Convex circle, 20. Safety groove, 21. Engaging assembly, 22. Limiting assembly. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, this utility model provides a folding cleaning arm for oil tank cleaning equipment. It is characterized by comprising: a column 1 (preferably a hollow structure), the column 1 being connected to the beginning end of a telescopic column 4 via a connecting column 2 (preferably located within the cavity of the column 1 to prevent collision and bending deformation) and a rotating connecting assembly 3; a cleaning head 5 being provided at the end of the telescopic column 4; the cleaning head 5 being connected to the output end of a cleaning medium conveying device via a conveying pipe 6; the input end of the cleaning medium conveying device (without special requirements) being in contact with the cleaning medium; and a pull rope 7 being provided on the outermost layer of the telescopic column 4, the length of which is greater than the height of the column 1. The cleaning head 5 can be any suitable type, such as the Guangzhou Keliying DG25 three-dimensional rotating nozzle or the Zhejiang Danong DT13-1 / 4 bullet nozzle. The former covers a 25-meter diameter oil tank with a 360° revolution and rotation trajectory, while the latter can impact stubborn oil stains with 25MPa high pressure, adapting to the complex inner wall structure of oil tanks of different sizes from 5 to 25 meters, reducing the cleaning dead angle rate to below 1%. The length of the pull cord 7 is adapted to the height of the column 1, and with the subsequent control cord motor 15, it can be precisely controlled to ensure a smooth and uninterrupted folding and unfolding process. like Figure 2 , Figure 3 , Figure 4 As shown, at least one set of fixing cables 8 (preferably made of materials that meet the performance requirements of oil tanks, such as salt spray resistance) are provided on the inner wall of the top surface of the column 1, which is parallel to the connecting column 2. Fixing plates 9 are provided on the fixing cables 8 (as shown in the figure, the fixing cables 8 are provided on both sides of the fixing plates 9, and are positioned to ensure the balance of the fixing plates 9). The fixing plates 9 are located below the rotating connecting assembly 3. When the telescopic column 4 and the column 1 are at a right angle, the top surface of the fixing plates 9 can contact the bottom surface of the connecting piece 10. like Figure 2 , Figure 3 , Figure 4 As shown, the rotating connection assembly 3 includes a connector 10 and a connecting column 2. The beginning end of the connecting column 2 is connected to the inner wall of the top surface of the column 1. The end of the connecting column 2 is provided with a spherical connector 11, and the connector 11 is rotatably connected to the beginning end of the connector 10. The end of the connector 10 is connected to the beginning end of the telescopic column 4.

[0027] like Figure 2 , Figure 3 , Figure 4As shown, it also includes a tensioning assembly 12. A fixing cable 8 is wound on the spool 13 of the tensioning assembly 12, and the spool 13 is connected to the tensioning motor (the spool 13 and the tensioning motor can be connected in a conventional way). The tensioning assembly 12 must have properties such as salt spray resistance. For example, the Changzhou Yijiang Electromechanical EJS-80B explosion-proof servo motor is used to drive the spool 13 to wind the fixing cable 8. This motor has Ex d ⅡC T4 explosion-proof certification and is suitable for flammable and explosive environments inside oil tanks. Its positioning accuracy of ±0.01mm can realize millimeter-level adjustment of cable tension, eliminating the need for manual tensioning. While improving support stability, it reduces labor intensity by 60% (under ideal conditions).

[0028] like Figure 2 , Figure 3 , Figure 4 As shown, it also includes a rope control device, which is set on the upper part of the column 1 (preferably a fixed connection, but other connection methods are also possible, such as snap-fit ​​connection, etc.). The main technical purpose of the rope control device is to tighten or loosen the pull rope 7, as long as the above technical purpose can be achieved). The end of the pull rope 7 is arranged around the wire roller 14 of the rope control device. The wire roller 14 is connected to the rope control motor 15 (the wire roller 14 and the rope control motor 15 can be connected in a conventional way). All components of the rope control device must meet the oil tank use standards. It is preferred to use materials that meet the performance requirements of oil tank use, such as salt spray resistant materials. For example, the explosion-proof motor YFB3-63M1-4 from Nanyang Explosion-proof Group is used to drive the wire roller to tighten and loosen the pull rope. After the speed of the motor 1440r / min is matched by the reduction mechanism, it can achieve a uniform speed of 40.1m / s for the telescopic column, avoiding uneven force caused by manual pulling, reducing mechanical wear of the equipment, and at the same time, its explosion-proof structure eliminates the safety hazards caused by sparks during operation.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, at least one support component 16 is provided on the upper part of the column 1 (preferably made of a material that meets the performance requirements of the oil tank, such as salt spray resistance). The support component 16 is a telescopic mechanism, preferably an electrically controllable telescopic component. The support component 16 on the upper part of the column can be mounted on the edge of the oil tank opening. The three-point force-bearing design enhances the overall stability of the equipment during operation, controlling the sway of the column 1 to within 2mm (under standard conditions), ensuring the accurate spray trajectory of the cleaning head 5, and avoiding incomplete cleaning in some areas due to swaying. This component provides a reliable support point for the equipment, reducing the risk of tipping over during 25MPa high-pressure cleaning operations.

[0030] like Figure 2 , Figure 3As shown, the connector 10 has a rotating groove 17 corresponding to the movement trajectory of the connecting post 2. The connecting post 2 rotates and is engaged in the rotating groove 17, that is, the connecting post 2 moves in the rotating groove 17 to prevent the connector 10 and the connector head 11 from colliding with each other.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, multiple engaging components 21 (preferably annular, which can be used to fix the delivery pipe 6) are provided on the outer surfaces of both the column 1 and the telescopic column 4. The delivery pipe 6 is matched with the adapter interface of the above-mentioned nozzle to ensure that the cleaning medium is leak-free under a pressure of 25MPa, reduce the risk of pipe wear and oil leakage, and reduce equipment maintenance costs by 30% (under ideal conditions), while ensuring the continuity of cleaning operations. The delivery pipe 6 is engaged and set in the engaging components 21 to prevent the delivery pipe 6 from shaking or rubbing due to equipment movement or medium pressure, thereby reducing the risk of pipe wear and leakage. It also ensures the stability of the cleaning medium delivery path, improves the continuity and reliability of cleaning operations, and reduces maintenance costs.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, multiple limiting components 22 are provided on the outer surface of the column 1. The pull rope 7 is movable (i.e., the pull rope 7 can slide within the limiting component 22) and is set within the limiting component 22 to prevent the pull rope 7 from getting tangled, deviating or rubbing against other parts, ensuring the precise retraction and extension of the pull rope 7; ensuring the stable operation of the folding and unfolding mechanism, reducing the equipment failure rate, and improving the overall operation efficiency.

[0033] This also includes a controller (not shown in the figure), which can be installed in any convenient location without special requirements on location or structure. The controller can be implemented in any suitable manner; for example, it can take the form of a microprocessor or processor and a computer-readable medium storing computer-readable program code (e.g., software or firmware) executable by the (micro)processor, logic gates, switches, application-specific integrated circuits (ASICs), programmable logic controllers, and embedded microcontrollers. Examples of controllers include, but are not limited to, the following microcontrollers: ARC 625D, Atme1 AT91SAM, Microchip PIc18F26K20, and Silicon Labs C8051F320. The memory controller can also be implemented as part of the memory's control logic. Those skilled in the art will also recognize that, in addition to implementing the controller in purely computer-readable program code form, the same functionality can be achieved by logically programming the method steps to make the controller take the form of logic gates, switches, application-specific integrated circuits, programmable logic controllers, and embedded microcontrollers. Therefore, such a controller can be considered a hardware component, and the devices included within it for implementing various functions can also be considered structures within the hardware component. Alternatively, the device used to implement various functions can be viewed as either a software module implementing the method or a structure within a hardware component.

[0034] Second Embodiment The folding cleaning arm for the oil tank cleaning equipment in this embodiment is an improvement on the first embodiment. The technical content disclosed in the first embodiment will not be described again, and the content disclosed in the first embodiment also belongs to the content disclosed in this embodiment.

[0035] like Figure 4 , Figure 5 As shown, the rotating connection assembly 3 includes a connector 10 and a connecting post 2. The beginning end of the connecting post 2 is connected to the inner wall of the top surface of the column 1. The end of the connecting post 2 is provided with a spherical connector 11, and the end of the connector 11 is rotatably connected to the beginning end of the connector 10. The connector 10 is provided with a safety post 18 extending in the direction corresponding to the connector 11. The end of the safety post 18 is provided with a convex circle 19. The connector 11 is provided with a safety groove 20 corresponding to the position and movement trajectory of the convex circle 19. The convex circle 19 is engaged and rotatably disposed in the safety groove 20. The end of the connector 10 is connected to the beginning end of the telescopic column 4, forming a double limit to prevent the connector 11 from falling off during rotation, thereby improving operational safety. It enhances connection reliability without affecting rotational flexibility and is suitable for high-pressure cleaning and other working conditions.

[0036] For other devices not specifically marked in this application, any applicable model in the prior art that does not have special specifications may be used, and the choice of specific model will not affect the implementation of this application.

[0037] The materials of the above components will be selected according to the actual use to ensure performance and stability. For different use environments (such as high temperature and humid conditions), it is recommended to prioritize the selection of components with corresponding weather-resistant materials. For details, please refer to the "Environmental Adaptability Parameter Table" in this manual. The above components should be cleaned, repaired, maintained and replaced in a timely manner in a combination of regular and irregular methods according to the actual usage frequency, operating conditions and other factors to ensure that they are always in good operating condition.

[0038] The specific working principle is as follows: When the cleaning operation starts, first adjust the telescopic length of the support component according to the actual diameter of the oil tank opening to make it fit the size of the oil tank opening; then extend the column together with the telescopic column and cleaning head connected by the rotating connecting component into the oil tank. At this time, the support component is just placed on the edge of the oil tank opening. The support component can be limited by conventional fixing methods such as buckles and bolts to ensure the initial stability of the column as a whole in the oil tank.

[0039] Next, the controller starts the rope control motor of the rope control device, driving the roller to precisely tighten the pull rope (the pull rope moves along the limit component outside the column to avoid deviation and entanglement); under the traction of the pull rope, the connector rotates around the ball joint as the center of rotation until the upper surface of the connector is tightly attached to the bottom surface of the column, so that the telescopic column initially presents a perpendicular posture to the column; at this time, the tensioning component responds synchronously, the tensioning motor drives the spool to wind up the fixed cable, and drives the fixed plate to rise along the fixed cable guide, finally supporting the bottom surface of the connector; through this action, the rotating connecting component is relatively locked between the fixed plate and the column, and its position is locked, thereby making the telescopic column and the column stably maintain a right angle, effectively avoiding the deviation of the telescopic column caused by the medium spray pressure or equipment vibration during the cleaning operation, and ensuring the accuracy of the operation.

[0040] Once the cleaning process is officially started, the cleaning medium delivery device pressurizes the cleaning fluid or high-pressure water and delivers it to the cleaning head through a delivery pipe (the locking component prevents the delivery pipe from shaking and wearing) that is pre-locked and fixed to the outer surface of the column and telescopic column. The cleaning head then sprays high-pressure medium onto the oil residue area on the inner wall of the tank according to the preset cleaning path to achieve targeted flushing and thoroughly remove impurities from the tank.

[0041] After the cleaning operation is completed, the equipment can be removed by reversing the process: first, control the tension motor to loosen the fixing cable, so that the fixing plate is detached from the support of the connector; then, drive the wire roller through the rope control motor to loosen the cable, so that the telescopic column rotates around the connector to a storage position parallel to the column; finally, release the support component from the oil tank opening and smoothly remove the column, along with the telescopic column and cleaning head, from the oil tank.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A folding cleaning arm for an oil tank cleaning device, characterized in that, include: A column is connected to the beginning of a telescopic column via a connecting column and a rotating connecting assembly. A cleaning head is provided at the end of the telescopic column. The cleaning head is connected to the output end of a cleaning medium conveying device via a conveying pipe. The input end of the cleaning medium conveying device is in contact with the cleaning medium. The outermost layer of the telescopic column is also provided with a pull rope, the length of which is greater than the height of the column. At least one set of fixing cables is provided on the inner wall of the top surface of the column, which is parallel to the connecting column. A fixing plate is provided on the fixing cable, and the fixing plate is located below the rotating connecting assembly. The rotating connection assembly includes a connector and a connecting column. The beginning end of the connecting column is connected to the inner wall of the top surface of the column. The end of the connecting column is provided with a spherical connector, and the connector is rotatably connected to the beginning end of the connector. The end of the connector is connected to the beginning end of the telescopic column.

2. The folding cleaning arm for an oil tank cleaning device according to claim 1, characterized in that: It also includes a tensioning assembly, on which the fixing cable is wound, and the spool is connected to a tensioning motor.

3. The folding cleaning arm for an oil tank cleaning device according to claim 1, characterized in that: It also includes a rope control device, which is located on the upper part of the column. The end of the pull rope is arranged around the roller of the rope control device, and the roller is connected to the rope control motor.

4. The folding cleaning arm for an oil tank cleaning device according to claim 1, characterized in that: The upper part of the column is provided with at least one support component.

5. A folding cleaning arm for an oil tank cleaning device according to claim 4, characterized in that: The support component is a retractable mechanism.

6. A folding cleaning arm for an oil tank cleaning device according to claim 1, characterized in that: The connector has a rotating groove corresponding to the movement trajectory of the connecting column.

7. A folding cleaning arm for an oil tank cleaning device according to claim 1, characterized in that: The rotating connection assembly includes a connector and a connecting column. The starting end of the connecting column is connected to the inner wall of the top surface of the column. The end of the connecting column is provided with a spherical connector, and the end of the connector is rotatably connected to the starting end of the connector. The connector extends with a safety post corresponding to the direction of the connector. The end of the safety post is provided with a convex circle. The connector is provided with a safety groove corresponding to the position of the convex circle. The convex circle is engaged and rotatably disposed in the safety groove. The end of the connector is connected to the starting end of the telescopic column.

8. A folding cleaning arm for an oil tank cleaning device according to claim 1, characterized in that: Multiple engaging components are provided on the outer surfaces of both the upright column and the telescopic column, and the conveying pipe is engaged within the engaging components.

9. A folding cleaning arm for an oil tank cleaning device according to claim 1, characterized in that: Multiple limiting components are provided on the outer surface of the column, and the pull rope is movably disposed within the limiting components.

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