A cleaning device for oil storage tank and engineering vehicle

Abstract

The application relates to a cleaning device of an oil storage tank and an engineering vehicle, which comprises a first water pipe and a telescopic rotating device, one end of the first water pipe is connected with the telescopic rotating device, the telescopic rotating device can drive the first water pipe to move and rotate, and one end of the first water pipe is further connected with a first drive and a first faucet, the first drive can drive the first faucet to rotate around the first water pipe. According to the scheme, since the cleaning device is connected with the telescopic rotating device, that is, the cleaning device is located outside the tank body of the oil storage tank, the cleaning device can clean different tank bodies, the utilization rate of the cleaning device is improved, the space in the tank body is saved, and the safety hidden danger is reduced; in addition, the first faucet can rotate around the first water pipe, so that the first faucet can be used for rotary cleaning after the first water pipe is inserted into the tank body, and the cleaning effect on the inside of the tank body is enhanced.

Description

Technical Field

[0001] This invention relates to the field of oil tank cleaning, and in particular to a cleaning device and engineering vehicle for oil storage tanks. Background Technology

[0002] Oil storage tanks are containers, typically tank-shaped, used for storing and transporting oil products. They are an intermediate link in oil and gas storage and transportation projects, such as at gas stations. During long-term use, oil storage tanks inevitably accumulate sediment and impurities, which corrode and clog them, reducing their internal volume and leading to inaccurate calculations and measurements, ultimately causing a decline in oil quality. This necessitates cleaning the inner walls of the tanks, usually manually, which is labor-intensive, time-consuming, and carries the risk of toxic gases remaining inside the tanks posing serious health hazards to workers.

[0003] In existing equipment, a set of slide rails is installed inside the tank, and a swingable nozzle is set on the slide rails to rinse the inside of the tank to clean sediment, debris and other impurities. However, the slide rails are fixed inside the tank and can only clean one tank at a time, resulting in low utilization and occupying space inside the tank, which can easily cause safety hazards. Summary of the Invention

[0004] This invention addresses the problem of low utilization rate of existing cleaning devices due to fixing the cleaning device inside the tank. It provides a versatile cleaning device and engineering vehicle for oil storage tanks that can clean different types of tanks.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a cleaning device for an oil storage tank, comprising a first water pipe and a telescopic rotating device, one end of the first water pipe being connected to the telescopic rotating device, the telescopic rotating device being able to drive the first water pipe to move and rotate, and one end of the first water pipe being connected to a first drive and a first tap, the first drive being able to drive the first tap to rotate around the first water pipe.

[0006] The beneficial effects of the present invention are as follows: Since the cleaning device is connected to a telescopic and rotating device, that is, the cleaning device is located outside the tank body of the oil storage tank, the cleaning device can clean different tank bodies, thereby improving the utilization rate of the cleaning device, saving space inside the tank, and reducing safety hazards; in addition, the first faucet can rotate around the first water pipe, so that after the first water pipe is inserted into the tank body, the first faucet can be used for rotational cleaning, thereby enhancing the cleaning effect on the inside of the tank body.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, an efficiency-enhancing water pump is fixed on the first water pipe.

[0009] The beneficial effect of adopting the above-mentioned further solution is that the enhanced water pump is used to further pressurize the cleaning fluid for better cleaning of the oil storage tank.

[0010] Furthermore, the first faucet is L-shaped, with one end of the L-shaped first faucet connected to one end of the first water pipe via the first drive, and the other end of the L-shaped first faucet being the first water outlet. The first water outlet is connected to one end of the second faucet via the second drive, and the other end of the second faucet being the second water outlet. The axis of the second water outlet is perpendicular to the axis of the first water outlet, and the second drive can drive the second faucet to rotate around the first water outlet.

[0011] The beneficial effect of adopting the above-mentioned further solution is that it is equipped with a rotatable first faucet and a second faucet, and the first water outlet and the second water outlet are axially perpendicular, which increases the washable range of the second water outlet, thereby enhancing the washing effect on the inside of the tank and avoiding cleaning dead corners.

[0012] Furthermore, the telescopic rotating device connects the connecting rod and the telescopic arm. One end of the connecting rod and one end of the telescopic arm are rotatably connected through the first rotating shaft, and the other end of the telescopic arm is connected to one end of the first water pipe through the first connecting piece.

[0013] The beneficial effect of adopting the above-mentioned further solution is that by setting up a telescopic arm, the first water pipe can be moved in a straight line, thereby increasing the cleaning range of the first water pipe inside the tank.

[0014] Furthermore, the connecting rod has a groove along its length, and a second rotating shaft is provided in the groove. The second rotating shaft is connected to one end of the pull rod, and the other end of the pull rod is connected to the telescopic arm through a third rotating shaft. A third drive is fixed on the connecting rod, and the third drive can push the second rotating shaft to move along the groove.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the pull rod can slide along the length of the slide groove, so that the connecting rod and the telescopic arm can rotate relative to each other around the first rotating axis, thereby driving the pull rod and the telescopic arm to rotate around the third rotating axis; that is, when the position of the connecting rod is fixed, the second rotating axis can be moved along the slide groove through the third drive, so as to drive the telescopic arm to rotate, thereby driving the first faucet connected to the telescopic arm to rotate, thereby controlling the water outlet direction of the cleaning liquid.

[0016] Furthermore, the telescopic arm has a multi-layer sleeve structure, and a fourth drive is provided between adjacent sleeves, or a sealed cavity is formed inside the telescopic arm and connected to a pressure device.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the telescopic arm needs to be extended and retracted in the length direction, so that the multiple sleeves of the telescopic arm can slide relative to each other to change the length of the telescopic arm, thereby driving the first auger to move.

[0018] Furthermore, the connecting rod is set in a vertical direction, and a second connecting member is fixed on the outer periphery of the connecting rod. The second connecting member is provided with two rotatable and parallel jacks 64. The outer periphery of the jacks 64 is provided with a concave arc-shaped contact surface. The first water pipe 11 is located between the two jacks 64 and abuts against the two contact surfaces.

[0019] The beneficial effects of adopting the above-mentioned further solution are that the second connector is set to fix the middle part of the first water pipe, so as to prevent the first water pipe from getting tangled when it moves with the telescopic arm; the two clamping rollers are set in parallel and can be used to clamp the second water pipe, so that the second water pipe is clamped between the two clamping rollers when it is extended and retracted, so as to avoid random swinging, tangling and knotting, which could cause accidents and affect the second water pipe entering and leaving the oil storage tank with the telescopic arm.

[0020] Furthermore, the end of the telescopic rotating device facing away from the first faucet is fixed to the third connector. The third connector is connected to the support rod via the fifth drive, which can drive the third connector and the telescopic rotating device to move along the length of the support rod.

[0021] The beneficial effect of adopting the above-mentioned further solution is that by setting a third connecting member, the telescopic rotating device can be movably mounted on the support rod, so that the telescopic rotating device can move along the length direction of the support rod under the drive of the fifth drive.

[0022] Furthermore, the first water pipe is wrapped around the rotating frame, and the other end of the first water pipe is connected to the second water pipe. One end of the second water pipe is located in the middle of the rotating frame, and the second water pipe is connected to the water tank.

[0023] The beneficial effect of adopting the above-mentioned further solution is that setting up a rotating rack facilitates the storage and organization of the first water pipe and avoids the first water pipe from getting tangled and knotted.

[0024] According to another objective of the present invention, an engineering vehicle is provided, comprising a cleaning device for the aforementioned oil storage tank, wherein the cleaning device is connected to a control device and both are fixed to the engineering vehicle.

[0025] The advantage of adopting the above-mentioned further solution is that it allows the cleaning device to be moved with the engineering vehicle in order to clean different tanks. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the vertical state of the cleaning device for the oil storage tank of the present invention;

[0027] Figure 2 This is a schematic diagram showing the tilted state of the cleaning device for the oil storage tank of the present invention;

[0028] Figure 3 This is a schematic diagram of the horizontally positioned cleaning device for the oil storage tank of the present invention.

[0029] Figure 4 This is a partial vertical sectional view of the support rod of the present invention;

[0030] Figure 5 For the present invention Figure 3 A partial sectional view of AA;

[0031] Figure 6 This is a partial vertical sectional view of the connecting rod and telescopic arm of the present invention;

[0032] Figure 7 This is a schematic diagram of an embodiment of the connection structure between the sleeve structures of the telescopic arm of the present invention;

[0033] Figure 8 This is a schematic diagram of a second embodiment of the connection structure between the sleeve structures of the telescopic arm of the present invention;

[0034] Figure 9 This is a schematic diagram of a partial cross-sectional view of the first faucet of the present invention, according to Embodiment 1.

[0035] Figure 10 This is a schematic diagram of a partial cross-sectional view of the first faucet of the present invention, in Embodiment 2.

[0036] Figure 11 For the present invention Figure 9 Schematic diagram of the BB cross section in the middle;

[0037] Figure 12 For the present invention Figure 1 Partial cross-sectional view of the transfer frame;

[0038] Figure 13 For the present invention Figure 1 A cross-sectional view of the CC limiter.

[0039] Figure 14 This is a schematic diagram of the engineering vehicle of the present invention.

[0040] The attached diagram lists the components represented by each number as follows:

[0041] 11 First water pipe; 12 Enhanced water pump; 13 First drive; 14 First tap; 15 Second drive; 16 Second tap; 17 Sixth drive;

[0042] 21 First connector; 22 First pivot; 23 Second pivot; 24 Tie rod; 25 Third pivot; 26 Second connector; 27 Third connector;

[0043] 31 Connecting rod; 33 Third drive;

[0044] 41 Telescopic boom; 42 Fourth drive; 43 Pressure device; 44 Camera; 45 Gear and rack mechanism; 46 Hose;

[0045] 51 Support rod; 52 Fifth drive; 53 Foot pad;

[0046] 61. Turntable; 62. Turntable; 64. Caster wheel;

[0047] 71 Second water pipe; 72 Water tank; 73 High-pressure water pump;

[0048] 80 Engineering Vehicles; 81 Control Devices;

[0049] 90 Tank truck; 91 Tank body; 92 Baffle; 93 Cleaning port; 94 Discharge port. Detailed Implementation

[0050] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0051] like Figure 1 and Figure 14 The cleaning device of this application is located on the engineering vehicle 80 and is used to clean the tank 91 on the tank truck 90. ​​The tank 91 is provided with a cleaning port 93 to facilitate the cleaning device to enter the tank 91 for cleaning the internal structure of the tank 91. The lower part of the tank 91 is provided with a discharge port 94 to discharge the waste liquid after cleaning. Since the cleaning device of this application is not fixed to the tank 91, it can be used to clean multiple different tanks 91, thereby improving the utilization rate of the cleaning device and reducing the space occupied inside the tank 91.

[0052] Example 1

[0053] like Figures 1 to 3 A cleaning device for an oil storage tank includes a first water pipe 11 and a telescopic rotating device. One end of the first water pipe 11 is connected to the telescopic rotating device, which can drive the first water pipe 11 to move and rotate. One end of the first water pipe 11 is also connected to a first drive 13 and a first tap 14. The first drive 13 can drive the first tap 14 to rotate around the first water pipe 11.

[0054] The beneficial effects of this embodiment are as follows: Since the cleaning device is connected to a telescopic rotating device, that is, the cleaning device is located outside the tank body 91 of the oil storage tank, the cleaning device can clean different tank bodies 91, thereby improving the utilization rate of the cleaning device, saving space inside the tank body 91, and reducing safety hazards; In addition, the first faucet 14 can rotate around the first water pipe 11, so that after the first water pipe 11 is inserted into the tank body 91, the first faucet 14 can be used for rotational cleaning, thereby enhancing the cleaning effect on the inside of the tank body 91.

[0055] Example 2

[0056] Preferably, based on Embodiment 1, an enhanced water pump 12 is fixed on the first water pipe 11.

[0057] The beneficial effect of adopting the preferred solution in the above embodiments is that the enhanced water pump 12 is used to pressurize the cleaning fluid for better cleaning of the oil storage tank.

[0058] Example 3

[0059] like Figure 9 and Figure 10 Preferably, based on embodiments 1-2, the first faucet 14 is L-shaped. One end of the L-shaped first faucet 14 is connected to one end of the first water pipe 11 through the first drive 13. The other end of the L-shaped first faucet 14 is the first water outlet. The first water outlet is connected to one end of the second faucet 16 through the second drive 15. The other end of the second faucet 16 is the second water outlet. The axis of the second water outlet is perpendicular to the axis of the first water outlet. The second drive 15 can drive the second faucet 16 to rotate around the first water outlet.

[0060] The beneficial effect of the preferred solution in the above embodiments is that it is provided with a rotatable first faucet 14 and a second faucet 16, and the first water outlet and the second water outlet are axially perpendicular, which increases the washable range of the second water outlet, thereby enhancing the washing effect on the inside of the tank 91 and avoiding cleaning dead corners.

[0061] Based on the above embodiments, a baffle 92 is provided in the tank 91 along the vertical direction. By setting the first faucet 14 and the second faucet 16, the baffle 92 can be fully rinsed to improve the cleaning effect of the baffle 92.

[0062] Example 4

[0063] like Figure 11 Preferably, based on embodiments 1-3, the telescopic rotating device includes a connecting rod 31 and a telescopic arm 41. One end of the connecting rod 31 and one end of the telescopic arm 41 are rotatably connected through a first rotating shaft 22, and the other end of the telescopic arm 41 is connected to one end of the first water pipe 11 through a first connecting member 21.

[0064] The beneficial effect of adopting the preferred solution in the above embodiments is that the telescopic arm 41 is provided, which can drive the first water pipe 11 to move in a straight line, thereby improving the cleaning range of the first water pipe 11 in the tank 91.

[0065] Example 5

[0066] Preferably, based on embodiments 1-4, the connecting rod 31 has a groove along its length, and a second rotating shaft 23 is provided in the groove. The second rotating shaft 23 is connected to one end of the pull rod 24, and the other end of the pull rod 24 is connected to the telescopic arm 41 through a third rotating shaft 25. A third drive 33 is fixed on the connecting rod 31, and the third drive 33 can push the second rotating shaft 23 to move along the groove.

[0067] The beneficial effect of the preferred solution in the above embodiments is that the pull rod 24 can slide along the length of the slide groove, so that the connecting rod 31 and the telescopic arm 41 can rotate relative to each other around the first rotating shaft 22, thereby driving the pull rod 24 and the telescopic arm 41 to rotate around the third rotating shaft 25; that is, when the position of the connecting rod 31 is fixed, the second rotating shaft 23 can be moved along the slide groove by the third drive 33, so as to drive the telescopic arm 41 to rotate, thereby driving the first faucet 14 connected to the telescopic arm 41 to rotate, thereby controlling the water outlet direction of the cleaning liquid.

[0068] Example 6

[0069] like Figure 6 Preferably, based on embodiments 1-5, the telescopic arm 41 has a multi-layer sleeve structure, and a fourth drive 42 is provided between adjacent sleeves, or a sealed cavity is formed inside the telescopic arm 41 and a pressure device 43 is connected thereto.

[0070] The beneficial effect of adopting the preferred solution in the above embodiments is that the telescopic arm 41 needs to be extended and retracted in the length direction so that the multiple sleeves of the telescopic arm 41 can slide relative to each other to change the length of the telescopic arm 41, thereby driving the first head 14 to move.

[0071] like Figure 7 and Figure 8 Based on the above embodiments, when the telescopic arm 41 is connected to the pressure device 43 via the hose 46, the internal pressure device 43 can be equipped with compressed gas or liquid; when the telescopic arm 41 is equipped with a fourth drive 42, a gear and rack meshing structure 45 can be provided; the telescopic arm 41 is a multi-layer sleeve structure. When the telescopic arm 41 is a three-layer structure, the sleeve with the largest diameter is connected to the connecting rod 31, and the sleeve with the smallest diameter is connected to the first water pipe 11 via the first connector 21. A camera 44 is connected to the end of the sleeve. The camera 44 is used to observe the cleaning effect so as to strengthen the cleaning of hard-to-clean dead corners.

[0072] Example 7

[0073] Preferably, based on embodiments 1-6, the connecting rod 31 is arranged in a vertical direction, and a second connecting member 26 is fixed on the outer periphery of the connecting rod 31. The second connecting member 26 is provided with two rotatable and parallel jacks 64. The outer periphery of the jacks 64 is provided with a concave arc-shaped contact surface. The first water pipe 11 is located between the two jacks 64 and abuts against the two contact surfaces.

[0074] The beneficial effects of the preferred solution in the above embodiments are that the second connector 26 is provided to fix the middle part of the first water pipe 11, so as to prevent the first water pipe 11 from getting tangled when it moves with the telescopic arm 41; two clamping rollers 64 are provided, which are arranged in parallel and can be used to clamp the second water pipe 71, so that the second water pipe 71 is clamped between the two clamping rollers 64 when it is extended and retracted, so as to avoid random swinging, tangling and knotting, which could cause accidents and affect the second water pipe 71 from entering and exiting the oil storage tank with the telescopic arm 41.

[0075] Based on the above embodiments, since the second connecting member 26 is fixed on the connecting rod 31, the connecting rod 31 can move along the support rod 51, so that the second connecting member 26 and the rotating frame 61 can move together with the connecting rod 31; the rotating frame 61 is provided with a turntable 62 to facilitate the rotation of the rotating frame 61. A high-pressure water pump 73 is provided between the water tank 72 and the second water pipe 71.

[0076] Example 8

[0077] like Figure 4 and Figure 5 Preferably, based on embodiments 1-7, the end of the telescopic rotating device facing away from the first faucet 14 is fixed to the third connecting member 27. The third connecting member 27 is connected to the support rod 51 through the fifth drive 52. The fifth drive 52 can drive the third connecting member 27 and the telescopic rotating device to move along the length direction of the support rod 51.

[0078] The beneficial effect of adopting the preferred solution in the above embodiments is that by setting the third connecting member 27, the telescopic rotating device can be movably set on the support rod 51, so that the telescopic rotating device can move along the length direction of the support rod 51 under the drive of the fifth drive 52.

[0079] Based on the above embodiment, the support rod 51 is located in the vertical direction, that is, the third connecting member 27 can move in the vertical direction under the drive of the fifth drive 52. A pad 53 is fixed at the bottom of the support rod 51. The pad 53 is fixedly installed at the lower end of the support rod 51 to avoid rigid collision between the support rod 51 and the oil storage tank body 91, so as to avoid unnecessary losses.

[0080] Example 9

[0081] like Figure 12 and Figure 13 Preferably, based on embodiments 1-8, the first water pipe 11 is wrapped around the rotating frame 61, the other end of the first water pipe 11 is connected to the second water pipe 71, one end of the second water pipe 71 is located in the middle of the rotating frame 61, and the second water pipe 71 is connected to the water tank 72.

[0082] The beneficial effect of adopting the preferred solution in the above embodiments is that the rotating frame 61 facilitates the storage and organization of the first water pipe 11 and avoids the first water pipe 11 from getting tangled or knotted.

[0083] Example 10

[0084] like Figure 14 Preferably, based on embodiments 1-9, an engineering vehicle 80 includes the above-mentioned cleaning device for the oil storage tank, the cleaning device being connected to a control device 81 and both being fixed on the engineering vehicle 80.

[0085] The advantage of adopting the preferred solution in the above embodiments is that the cleaning device can be moved with the engineering vehicle 80 to clean different tanks 91.

[0086] When using the cleaning device, place the tank 91 to be cleaned in position. First, support the top of the tank 91 with the support rod 51. The fourth drive 42 drives the telescopic arm 41 to extend and move the second faucet 16 linearly. The third drive 33 drives the pull rod 24 to rotate, causing the telescopic arm and the second faucet 16 to rotate. Through this combined action, the second faucet 16 is driven into the tank 91, and its position can be adjusted. Alternatively, the fifth drive 52 can be used to move the entire telescopic and rotating device vertically. After the second faucet 16 enters the tank 91, the first drive 13 drives the first faucet 14 to rotate, and the second drive 15 drives the second faucet 16 to rotate, thereby changing the direction of the cleaning fluid discharge for better cleaning of the inside of the tank 91. After cleaning, remove the cleaning device from the tank 91 and move it away to complete the cleaning of the tank 91.

[0087] The sixth drive 17 drives the first water pipe 11 and the turntable 62 to rotate relative to the second water pipe 71, for the purpose of retracting and extending the first water pipe 11.

[0088] The third drive 33, the fourth drive 42, and the fifth drive 52 can all be linear motors. Each linear motor has a fixed end and a moving end; the fixed end pushes the moving end to move linearly. The first drive 13, the second drive 12, and the sixth drive 17 are all rotary drive motors.

[0089] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "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 invention 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 invention.

[0090] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0091] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0092] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0093] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0094] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A cleaning device for an oil storage tank, characterized in that, The device includes a first water pipe (11) and a telescopic rotating device. One end of the first water pipe is connected to the telescopic rotating device, which can drive the first water pipe (11) to move and rotate. One end of the first water pipe (11) is also connected to a first drive (13) and a first faucet (14). The first drive (13) can drive the first faucet (14) to rotate around the first water pipe (11). The first faucet (14) is L-shaped. One end of the L-shape of the first faucet (14) is connected to one end of the first water pipe (11) through the first drive (13). The other end of the L-shape of the first faucet (14) is the first water outlet. The first water outlet is connected to one end of the second faucet (16) through the second drive (15). The other end of the second faucet (16) is the second water outlet. The axial direction of the second water outlet is perpendicular to the axial direction of the first water outlet. The second drive (15) can drive the second faucet (16) to rotate around the first water outlet end; the telescopic rotating device includes a connecting rod (31) and a telescopic arm (41). One end of the connecting rod (31) and one end of the telescopic arm (41) are rotatably connected through a first rotating shaft (22). The other end of the telescopic arm (41) and one end of the first water pipe (11) are connected through a first connecting piece (21); the connecting rod (31) has a groove along its length direction. A second rotating shaft (23) is provided in the groove. The second rotating shaft (23) is connected to one end of a pull rod (24). The other end of the pull rod (24) is connected to the telescopic arm (41) through a third rotating shaft (25); a third drive (33) is fixed on the connecting rod (31). The third drive (33) can push the second rotating shaft (23) to move along the groove.

2. The cleaning device for the oil storage tank according to claim 1, characterized in that, An efficiency-enhancing water pump (12) is fixed on the first water pipe (11).

3. The cleaning device for the oil storage tank according to claim 1, characterized in that, The telescopic arm (41) is a multi-layer sleeve structure, and a fourth drive (42) is provided between adjacent sleeves, or a sealed cavity is formed inside the telescopic arm (41) and a pressure device (43) is connected.

4. The cleaning device for the oil storage tank according to claim 1, characterized in that, The connecting rod (31) is arranged in a vertical direction. A second connecting member (26) is fixed on the outer periphery of the connecting rod (31). The second connecting member (26) is provided with two rotatable and parallel chucks (64). The outer periphery of the chucks (64) is provided with a concave arc-shaped contact surface. The first water pipe (11) is located between the two chucks (64) and abuts against the two contact surfaces.

5. The cleaning device for the oil storage tank according to claim 1, characterized in that, The end of the telescopic rotating device facing away from the first faucet (14) is fixed to the third connector (27). The third connector (27) is connected to the support rod (51) through the fifth drive (52). The fifth drive (52) can drive the third connector (27) and the telescopic rotating device to move along the length direction of the support rod (51).

6. The cleaning device for an oil storage tank according to any one of claims 1-5, characterized in that, The first water pipe (11) is wrapped around the rotating frame (61), and the other end of the first water pipe (11) is connected to the second water pipe (71). One end of the second water pipe (71) is located in the middle of the rotating frame (61), and the second water pipe (71) is connected to the water tank (72).

7. An engineering vehicle, characterized in that, The cleaning device includes the oil storage tank as described in any one of claims 1-6, wherein the cleaning device is connected to a control device (81) and both are fixed on the engineering vehicle (80).

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