In-tank dual-arm cleaning device

Abstract

The utility model relates to the technical field of tank cleaning, especially a tank double -arm cleaning device, include: control box, two groups of extension arm subassembly, one end of each group of extension arm subassembly with the surface fixed connection of control box, telescopic control structure is set up in the inside of control box, and with Extension arm subassembly fixed connection is used for controlling the telescopic of extension arm subassembly, cleaning structure is connected with extension arm subassembly, is used for cleaning in tank, adjustment structure is set up in the one end of control box away from extension arm subassembly, and with Control box fixed connection. Extension arm subassembly sends cleaning structure to the inside of tank body, utilizes two groups of extension arm subassembly of opposite directions, can install two groups of cleaning structure, improves the range of cleaning, makes during cleaning, can clean simultaneously to both sides, does not need to rotate structure to cooperate use, has saved the time of rotation, improved the efficiency of cleaning.

Description

Technical Field

[0001] This utility model relates to the field of tank cleaning technology, specifically a tank double-arm cleaning device. Background Technology

[0002] Tanks, as sealed containers for storing liquids or gases, are widely used in pressure vessels such as urban gas storage tanks and tank containers. Tanks include fermentation tanks and reaction vessels. After prolonged use, tanks need to be cleaned internally, which requires the use of tank cleaning devices.

[0003] However, most existing tank cleaning devices use a telescopic single-arm structure to move the cleaning pipe and an external rotating structure for comprehensive cleaning. Since the rotation of the single arm takes time, each cleaning session takes a long time. In addition, most existing single-arm structures are fixed in the same position and cleaning is done by moving the tank. However, due to the large weight of the tank, precise height adjustment is not possible. This makes it impossible to ensure that the cleaning structure is in the center position during cleaning, resulting in reduced impact force of the nozzle on the outer inner wall and reduced cleaning effect. Utility Model Content

[0004] The purpose of this invention is to solve the problems of existing tank cleaning devices, such as the long cleaning time required for each cleaning due to the rotation of a single arm, and the reduced cleaning effect caused by the inability to ensure that the cleaning structure is in the middle position, which leads to a decrease in the impact force of the nozzle on the distant inner wall.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A dual-arm cleaning device for use inside a tank, comprising: Control box; Two sets of extension arm assemblies, one end of each set of extension arm assemblies is fixedly connected to the control box; A telescopic control structure is fixedly connected to the extension arm assembly and is used to control the telescopic extension of the extension arm assembly; A cleaning structure, connected to the extension arm assembly, is used for cleaning the inside of the tank; An adjustment structure, fixedly connected to the control box, is used to adjust the height of the control box.

[0006] Preferably, each set of the extension arm assemblies includes: A fixed arm, one end of which is fixedly connected to the control box; A basic arm, one end of which is rotatably connected to the end of the fixed arm away from the control box; A telescopic arm, one end of which extends into the interior of the base arm and is slidably connected to the base arm.

[0007] Preferably, the telescopic arm includes: The three-section arm has one end extending into the interior of the base arm and slidably connected to the base arm; Two-section arm, one end of which extends into the interior of the three-section arm and is slidably connected to the three-section arm; A first arm, one end of which extends into the interior of the second arm and is slidably connected to the second arm.

[0008] Preferably, the telescopic control structure includes: An extension wheel is located inside the lower part of the control box, and the axis of the extension wheel is rotatably connected to the control box; Two sets of first guide wheels are both located inside the control box at the upper part, and at one end close to the fixed arm; the axis of the first guide wheel is rotatably connected to the control box; Six sets of anchor wheels are respectively set at both ends of the second-section arm and the third-section arm, as well as at the end of the basic arm away from the fixed arm and the end of the first-section arm close to the fixed arm; An extension wire rope is provided, one end of which is fixedly connected to the surface of the extension wheel, and the other end is fixedly connected to the anchor wheel on the first arm section; the extension wire rope passes through the first guide wheel and the remaining anchor wheels in sequence. A retractable wheel is located inside the control box and directly above the extension wheel; the axis of the retractable wheel is rotatably connected to the control box. Two sets of second guide wheels, each set of second guide wheels is disposed above the first guide wheel and is rotatably connected to the control box; A retractable steel wire rope, one end of which is fixedly connected to the surface of the retractable wheel, and the other end of which is fixedly connected to the end of the arm section near the fixed arm.

[0009] Preferably, the adjustment structure includes: Multiple sets of connecting plates, one side of each set of connecting plates is fixedly connected to the control box; A threaded rod passes through multiple sets of connecting plates and is threadedly connected to the connecting plates; The slide rail has a slide channel inside, so that the connecting plate is placed in the slide channel and the slide rail is slidably connected to the connecting plate through the slide channel; The drive assembly consists of a second motor and a turnout box, wherein the output end of the second motor is fixedly connected to the input end of the turnout box; and the output end of the turnout box is fixedly connected to one end of the threaded rod.

[0010] Preferably, it further includes: a vehicle body; the vehicle body is disposed below the adjustment structure and is fixedly connected to the drive assembly.

[0011] Preferably, it further includes: two sets of electrical control cabinets; the two sets of electrical control cabinets are disposed above the vehicle body and located on both sides of the drive assembly.

[0012] Preferably, the cleaning structure includes: Multiple sets of limiting components; the multiple sets of limiting components are fixedly connected to one side of the extension arm assembly; the surface of the limiting components is provided with through holes; The third guide wheel is located at the end of the extension arm assembly away from the control box. A water supply pipe passes through the through hole and is wrapped around the outside of the third guide wheel, with one end of the water supply pipe connected to the outside. A cleaning nozzle, one end of which is connected to the other end of the water supply pipe; A pipe take-up machine is located at the end of the water supply pipe away from the third guide wheel, and is capable of winding the water supply pipe onto the pipe take-up machine.

[0013] Preferably, it further includes: a conveying structure; the conveying structure is disposed above the control box and fixedly connected to the control box; the conveying structure includes: The first gear, the axis of which is rotatably connected to the control box; Two sets of second gears are symmetrically arranged on the edge of the first gear and mesh with the first gear; Two sets of fourth guide wheels are symmetrically arranged on both sides of the water supply pipe, and the axis of the fourth guide wheel is fixedly connected to the axis of the second gear. The first motor has its output end fixedly connected to the shaft of the first gear.

[0014] Preferably, it further includes: a can lid; the can lid is sleeved on the outside of the extension arm assembly and is fixedly connected to the control box.

[0015] The beneficial effects proposed by this utility model are as follows: the cleaning structure is delivered into the tank through the extension arm assembly, and two sets of cleaning structures can be installed by using two sets of extension arm assemblies in opposite directions, which increases the cleaning range and allows both sides to be cleaned at the same time during cleaning. There is no need for a rotating structure to cooperate, saving rotation time and improving cleaning efficiency.

[0016] The height of the control box can be changed by adjusting the structure, which in turn changes the position of the extension arm assembly, so that the distance between the two sets of cleaning structures and the inner wall of the tank is the same, thereby avoiding a reduction in the impact force on the inner wall and ensuring the cleaning effect on the inner wall. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Left-view stereoscopic diagram of the central connecting structure; Figure 3 for Figure 1 A three-dimensional schematic diagram of the middle section connection structure; Figure 4 for Figure 3 A three-dimensional schematic diagram of the middle section connection structure; Figure 5 for Figure 3 A three-dimensional enlarged schematic diagram of the internal connection structure; Figure 6 for Figure 2 A three-dimensional schematic diagram of the middle section connection structure; Figure 7 for Figure 6 A three-dimensional schematic diagram of the internal connection structure; Figure 8 for Figure 7 Schematic diagram of the connection structure at point A in the middle; Figure 9 for Figure 7 Schematic diagram of the connection structure at point B; Figure 10 for Figure 2 Schematic diagram of the connection structure at point C.

[0018] In the diagram: 1. First-section boom, 2. Second-section boom, 3. Third-section boom, 4. Limiting component, 5. Basic boom, 6. Control box, 7. Extension wheel, 8. First guide wheel, 9. Extension wire rope, 10. Fixed boom, 11. Tank lid, 12. Anchor wheel, 13. Retraction wheel, 14. Second guide wheel, 15. Retraction wire rope, 16. Third guide wheel, 17. First gear, 18. Second gear, 19. Fourth guide wheel, 20. First motor, 21. Vehicle body, 22. Connecting plate, 23. Electrical control cabinet, 24. Drive assembly, 25. Pipe take-up machine, 26. Water pipe, 27. Cleaning nozzle, 28. Slide rail, 29. Threaded rod. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings: This embodiment: Please see Figure 1-10 In this embodiment: a tank-mounted double-arm cleaning device includes: a control box 6, two sets of extension arm assemblies, a telescopic control structure, a cleaning structure, and an adjustment structure.

[0020] In this embodiment, one end of each extension arm assembly is fixedly connected to the control box 6.

[0021] In this embodiment, the cleaning structure is delivered into the tank via the extension arm assembly. By using two sets of extension arm assemblies in opposite directions, two sets of cleaning structures can be installed, increasing the cleaning range. This allows for simultaneous cleaning of both sides without the need for a rotating structure, saving rotation time and improving cleaning efficiency.

[0022] The telescopic control structure is fixedly connected to the extension arm assembly and is used to control the extension and retraction of the extension arm assembly.

[0023] In this embodiment, the telescopic control structure can control the extension and retraction of the extension arm assembly to facilitate cleaning.

[0024] The cleaning structure is connected to the extension arm assembly for cleaning the inside of the tank.

[0025] In this embodiment, The adjustment structure is fixedly connected to the control box 6 and is used to adjust the height of the control box 6.

[0026] In this embodiment, the height of the control box 6 can be changed by adjusting the structure, thereby changing the position of the extension arm assembly, so that the distance from the two sets of cleaning structures to the inner wall of the tank is the same, thereby avoiding a reduction in the impact force on the inner wall and ensuring the cleaning effect on the inner wall.

[0027] like Figure 7 and Figure 9 As shown, each extension arm assembly includes: a fixed arm 10, a basic arm 5, a three-section arm 3, a two-section arm 2, and a one-section arm 1.

[0028] One end of the fixed arm 10 is fixedly connected to the control box 6; one end of the basic arm 5 is rotatably connected to the end of the fixed arm 10 away from the control box 6.

[0029] In this embodiment, a self-locking structure is provided at the connection between the basic arm 5 and the fixed arm 10, which can stop the basic arm 5 and the fixed arm 10 at any angle; this self-locking structure can be a combination of a bidirectional ratchet and a locking pin, or other structures, as long as they can achieve self-locking.

[0030] The telescopic arm extends one end into the interior of the basic arm 5 and is slidably connected to the basic arm 5.

[0031] The telescopic arm includes: a three-section arm 3, a two-section arm 2, and a one-section arm 1.

[0032] One end of the three-section arm 3 extends into the interior of the basic arm 5 and is slidably connected to the basic arm 5; one end of the two-section arm 2 extends into the interior of the three-section arm 3 and is slidably connected to the three-section arm 3; one end of the one-section arm 1 extends into the interior of the two-section arm 2 and is slidably connected to the two-section arm 2.

[0033] In this embodiment, when extension is required, the first arm 1 extends first. When the first arm 1 reaches its limit, it will drive the second arm 2 to extend. When the second arm 2 reaches its limit, it will drive the third arm 3 to extend.

[0034] like Figure 5 and Figure 8 As shown, the telescopic control structure includes: an extension wheel 7, two sets of first guide wheels 8, six sets of anchor point wheels 12, an extension steel wire rope 9, a retraction wheel 13, two sets of second guide wheels 14, and a retraction steel wire rope 15.

[0035] Specifically, the extension wheel 7 is located inside the lower part of the control box 6, and the axis of the extension wheel 7 is rotatably connected to the control box 6.

[0036] In this embodiment, when the extension wheel 7 rotates, the extension wire rope 9 can be wound up or unwound. When the extension wire rope 9 is wound up, the extension arm assembly will extend. A first servo motor is provided behind the extension wheel 7, which can change the rotation direction of the extension wheel 7.

[0037] Both sets of first guide wheels 8 are located inside the control box 6 at the top and at one end near the fixed arm 10; the axis of the first guide wheel 8 is rotatably connected to the control box 6.

[0038] In this embodiment, the first guide wheel 8 can control the position of the extension wire rope 9.

[0039] Six sets of anchor wheels 12 are respectively set at both ends of the second-section arm 2 and the third-section arm 3, as well as at the end of the basic arm 5 away from the fixed arm 10 and the end of the first-section arm 1 close to the fixed arm 10; one end of the extension steel wire rope 9 is fixedly connected to the surface of the extension wheel 7, and the other end is fixedly connected to the anchor wheel 12 on the first-section arm 1; the extension steel wire rope 9 passes through the first guide wheel 8 and the remaining anchor wheels 12 in sequence.

[0040] In this embodiment, when the extension wire rope 9 retracts, since the distance from the anchor wheel 12 on the second arm 2 to the fixed arm 10 is greater than the distance from the end of the extension wire rope 9 to the fixed arm 10, the first arm 1 can be extended away from the fixed arm 10; after the first arm 1 is extended to its limit, the second arm 2 can be extended by relying on the anchor wheel 12 on the third arm 3; after the second arm 2 is extended to its limit, the third arm 3 can be extended by relying on the anchor wheel 12 on the basic arm 5.

[0041] The retraction wheel 13 is located inside the control box 6 and directly above the extension wheel 7; the axis of the retraction wheel 13 is rotatably connected to the control box 6.

[0042] In this embodiment, when the retraction wheel 13 rotates, the retraction wire rope 15 can be wound up or unwound. When the retraction wire rope 15 is wound up, the extension arm assembly will retract. A second servo motor is provided behind the retraction wheel 13, which can change the rotation direction of the retraction wheel 13.

[0043] Each set of second guide wheels 14 is positioned above the first guide wheel 8 and is rotatably connected to the control box 6.

[0044] In this embodiment, the second guide wheel 14 can control the direction of the retracting wire rope 15.

[0045] One end of the retractable wire rope 15 is fixedly connected to the surface of the retractable wheel 13, and the other end is fixedly connected to the end of a section arm 1 near the fixed arm 10.

[0046] In this embodiment, when the retractable wire rope 15 is wound up, a section of arm 1 can be pulled to move closer to the fixed arm 10.

[0047] like Figure 1 and Figure 10 As shown, the adjustment structure includes: multiple sets of connecting plates 22, threaded rods 29, slide rails 28, and drive assembly 24.

[0048] One side of each connecting plate 22 is fixedly connected to the control box 6; the threaded rod 29 passes through multiple connecting plates 22 and is threadedly connected to the connecting plates 22.

[0049] In this embodiment, when the threaded rod 29 rotates, multiple sets of connecting plates 22 will move vertically at the same time, thereby driving the control box 6 to move.

[0050] The slide rail 28 has a slide channel inside, so that the connecting plate 22 is placed in the slide channel, and the slide rail 28 is slidably connected to the connecting plate 22 through the slide channel.

[0051] In this embodiment, the slide rail 28 can restrict the connecting plate 22 to move only vertically and prevent it from rotating.

[0052] The drive assembly 24 consists of a second motor and a turnout box. The output end of the second motor is fixedly connected to the input end of the turnout box; the output end of the turnout box is fixedly connected to one end of the threaded rod 29.

[0053] In this embodiment, the drive assembly 24 can drive the threaded rod 29 to rotate; the variable gearbox only changes the output direction of the output end of the second motor and will not reduce the speed.

[0054] When height adjustment is required, the second motor is started. After the output of the second motor is changed by the reversing box, it drives the threaded rod 29 to rotate. The threaded rod 29 causes multiple sets of connecting plates 22 to move simultaneously. The multiple sets of connecting plates 22 can only move vertically under the restriction of the slide rail 28. The connecting plates 22 drive the control box 6 to move, thereby changing the position of the extension arm assembly, so that the distance from the two sets of cleaning structures to the inner wall of the tank is the same, thereby avoiding a reduction in the impact force on the inner wall and ensuring the cleaning effect on the inner wall.

[0055] like Figure 1 As shown, the tank-mounted double-arm cleaning device also includes: a vehicle body 21; the vehicle body 21 is located below the adjustment structure and is fixedly connected to the drive assembly 24.

[0056] In this embodiment, wheels are installed under the vehicle body 21, which allows the entire device to move; these wheels are omnidirectional wheels with a locking function.

[0057] like Figure 2 As shown, the tank-mounted double-arm cleaning device also includes two sets of electrical control cabinets 23; the two sets of electrical control cabinets 23 are located above the vehicle body 21 and on both sides of the drive assembly 24.

[0058] In this embodiment, the electrical control cabinet 23 is electrically connected to both the first motor and the second motor 20, that is, it provides power to the first motor and the second motor 20, and can also control the start, stop, direction and speed of the first motor and the second motor 20.

[0059] like Figure 1 and Figure 6 As shown, the cleaning structure includes: multiple sets of limiting components 4, a third guide wheel 16, a water supply pipe 26, a cleaning nozzle 27, and a pipe take-up machine 25.

[0060] Specifically, multiple sets of limiting members 4 are fixedly connected to one side of the extension arm assembly; through holes are opened on the surface of the limiting members 4; the third guide wheel 16 is located at the end of the extension arm assembly away from the control box 6.

[0061] In this embodiment, the limiting member 4 and the third guide wheel 16 work together to limit the direction of the water pipe 26; and the movement of the third guide wheel 16 drives the water pipe 26 to move.

[0062] The water supply pipe 26 passes through the through hole and is wrapped around the outside of the third guide wheel 16. One end of the water supply pipe 26 is connected to the outside.

[0063] In this embodiment, one end of the water supply pipe 26 is connected to an external water pump, which can deliver clean water into the water supply pipe 26 for cleaning.

[0064] One end of the cleaning nozzle 27 is connected to the other end of the water supply pipe 26.

[0065] In this embodiment, the cleaning nozzle 27 is fixedly connected to the front end of the arm 1; it can move synchronously with the arm 1.

[0066] The pipe take-up machine 25 is located at the end of the water supply pipe 26 away from the third guide wheel 16, and can make the water supply pipe 26 wrap around the pipe take-up machine 25.

[0067] In this embodiment, the pipe take-up machine 25 consists of a third servo motor and a take-up drum. The third servo motor can rotate the take-up drum and take up the water pipe 26. During cleaning, the water pipe 26 will be completely released without folding or water leakage.

[0068] like Figure 4 As shown, the double-arm cleaning device inside the tank also includes: a conveying structure; the conveying structure is located above the control box 6 and is fixedly connected to the control box 6; the conveying structure includes: a first gear 17, two sets of second gears 18, two sets of fourth guide wheels 19 and a first motor 20.

[0069] The shaft of the first gear 17 is rotatably connected to the control box 6.

[0070] In this embodiment, the control box 6 can support the rotation of the first gear 17.

[0071] Two sets of second gears 18 are symmetrically arranged on the edge of the first gear 17 and mesh with the first gear 17.

[0072] In this embodiment, when the first gear 17 rotates, it will drive the two sets of second gears 18 to rotate.

[0073] Two sets of fourth guide wheels 19 are symmetrically arranged on both sides of the water supply pipe 26, and the axis of the fourth guide wheel 19 is fixedly connected to the axis of the second gear 18.

[0074] In this embodiment, when the second gear 18 rotates, it will drive the fourth guide wheel 19 to rotate synchronously, and the fourth guide wheel 19 will control the direction of the water pipe extension and retraction.

[0075] The output end of the first motor 20 is fixedly connected to the shaft of the first gear 17.

[0076] In this embodiment, the model of the first motor 20 is selected according to actual needs, as long as it meets the working conditions; the output end of the first motor 20 can drive the first gear 17 to rotate.

[0077] like Figure 3 and Figure 4 As shown, the double-arm cleaning device inside the tank also includes: a tank cover 11; the tank cover 11 is sleeved on the outside of the extension arm assembly and is fixedly connected to the control box 6.

[0078] In this embodiment, the can lid 11 is fastened to the mouth of the can to prevent water droplets from spraying out.

[0079] Working principle: When in use, the double-arm cleaning device inside the tank is moved to the tank by the wheels under the vehicle body 21, so that the tank and the device are in the same vertical plane.

[0080] Subsequently, the second motor is started through the electrical control cabinet 23. After being changed by the reversing box, the output of the second motor drives the threaded rod 29 to rotate. The threaded rod 29 causes multiple sets of connecting plates 22 to move simultaneously. The multiple sets of connecting plates 22 can only move vertically under the restriction of the slide rail 28. The connecting plates 22 drive the control box 6 to move, thereby changing the position of the extension arm assembly, so that the distance from the two sets of cleaning structures to the inner wall of the tank is the same, thereby avoiding a reduction in the impact force on the inner wall and ensuring the cleaning effect on the inner wall.

[0081] Then, the moving vehicle body 21 is positioned so that the tank is fitted over the outside of the two sets of extension arm assemblies. When extension is required, the first servo motor is activated via the electrical control cabinet 23. The first servo motor causes the extension wheel 7 to rotate and wind up the extension wire rope 9. Since the distance from the anchor wheel 12 on the second arm 2 to the fixed arm 10 is greater than the distance from the end of the extension wire rope 9 to the fixed arm 10, the first arm 1 can be extended away from the fixed arm 10. After the first arm 1 is extended to its limit, the second arm 2 can be extended by the anchor wheel 12 on the third arm 3. After the second arm 2 is extended to its limit, the third arm 3 can be extended by the anchor wheel 12 on the basic arm 5. During this process, the retraction wheel 13 will release the line at the same speed.

[0082] During this process, the cleaning nozzle 27 will move, and the first motor 20 will be started through the electrical control cabinet 23. The output end of the first motor 20 will drive the first gear 17 to rotate, the first gear 17 will drive the second gear 18 to rotate, and the second gear 18 will drive the fourth guide wheel 19 to rotate, which can deliver water pipe 26 to the moving cleaning nozzle 27.

[0083] During cleaning, water is pumped into the water pipe 26 by an external water pump and sprayed out through the cleaning nozzle 27 to perform high-pressure rinsing on the inner wall of the tank. The external second servo motor is started by the electrical control cabinet 23, which drives the shrink wheel 13 to rotate and wind up the shrink wire rope 15. The shrink wire rope 15 will drive a section of arm 1 to move closer to the fixed arm 10, changing the cleaning position. During this process, the extension wheel 7 will release the line at the same speed.

[0084] The cleaning nozzle 27 is delivered into the tank via the extension arm assembly. Two sets of cleaning nozzles 27 can be installed using two sets of extension arm assemblies in opposite directions, which increases the cleaning range and allows for simultaneous cleaning of both sides without the need for a rotating structure, saving time and improving cleaning efficiency, thus completing the use of this device.

[0085] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A double-arm cleaning device for use inside a tank, characterized in that: include: Control box (6); Two sets of extension arm assemblies, one end of each set of extension arm assemblies is fixedly connected to the control box (6); A telescopic control structure is fixedly connected to the extension arm assembly and is used to control the telescopic extension of the extension arm assembly; A cleaning structure, connected to the extension arm assembly, is used for cleaning the inside of the tank; An adjustment structure is fixedly connected to the control box (6) and is used to adjust the height of the control box (6).

2. The double-arm cleaning device inside the tank according to claim 1, characterized in that: Each of the aforementioned extension arm assemblies includes: Fixed arm (10), one end of which is fixedly connected to the control box (6); A basic arm (5), one end of which is rotatably connected to the end of the fixed arm (10) away from the control box (6); Telescopic arm, one end of which extends into the interior of the basic arm (5) and is slidably connected to the basic arm (5).

3. The double-arm cleaning device inside the tank according to claim 2, characterized in that: The telescopic arm includes: Three-section arm (3), one end of which extends into the interior of the basic arm (5) and is slidably connected to the basic arm (5); Two-section arm (2), one end of which extends into the interior of the three-section arm (3) and is slidably connected to the three-section arm (3); One arm (1), one end of which extends into the interior of the second arm (2) and is slidably connected to the second arm (2).

4. The tank-mounted double-arm cleaning device according to claim 3, characterized in that: The telescopic control structure includes: An extension wheel (7) is located inside the lower part of the control box (6), and the axis of the extension wheel (7) is rotatably connected to the control box (6); Two sets of first guide wheels (8) are both located inside the control box (6) and above it, and are located at one end close to the fixed arm (10); the axis of the first guide wheel (8) is rotatably connected to the control box (6); Six sets of anchor wheels (12) are respectively set at both ends of the two-section arm (2) and the three-section arm (3), as well as at the end of the basic arm (5) away from the fixed arm (10) and at the end of the one-section arm (1) close to the fixed arm (10); An extension wire rope (9) is provided, with one end of the extension wire rope (9) fixedly connected to the surface of the extension wheel (7) and the other end fixedly connected to the anchor wheel (12) on the first arm (1); the extension wire rope (9) passes through the first guide wheel (8) and the remaining anchor wheels (12) in sequence. The retractable wheel (13) is located inside the control box (6) and directly above the extension wheel (7); the axis of the retractable wheel (13) is rotatably connected to the control box (6); Two sets of second guide wheels (14), each set of second guide wheels (14) is disposed above the first guide wheel (8) and is rotatably connected to the control box (6); A retractable wire rope (15) is provided, with one end of the retractable wire rope (15) fixedly connected to the surface of the retractable wheel (13) and the other end fixedly connected to the end of the first arm (1) near the fixed arm (10).

5. The double-arm cleaning device inside the tank according to claim 1, characterized in that: The adjustment structure includes: Multiple sets of connecting plates (22), one side of each set of connecting plates (22) is fixedly connected to the control box (6); A threaded rod (29) passes through multiple sets of the connecting plates (22) and is threadedly connected to the connecting plates (22); The slide rail (28) has a slide channel inside, so that the connecting plate (22) is placed in the slide channel, and the slide rail (28) is slidably connected to the connecting plate (22) through the slide channel; The drive assembly (24) consists of a second motor and a turnout box. The output end of the second motor is fixedly connected to the input end of the turnout box. The output end of the turnout box is fixedly connected to one end of the threaded rod (29).

6. The double-arm cleaning device inside the tank according to claim 5, characterized in that: Also includes: Vehicle body (21); the vehicle body (21) is located below the adjustment structure and is fixedly connected to the drive assembly (24).

7. The double-arm cleaning device inside the tank according to claim 6, characterized in that: Also includes: Two sets of electrical control cabinets (23); the two sets of electrical control cabinets (23) are located above the vehicle body (21) and on both sides of the drive assembly (24).

8. The double-arm cleaning device inside the tank according to claim 1, characterized in that: The cleaning structure includes: Multiple sets of limiting members (4); the multiple sets of limiting members (4) are fixedly connected to one side of the extension arm assembly; the surface of the limiting member (4) is provided with through holes; The third guide wheel (16) is located at the end of the extension arm assembly away from the control box (6). A water supply pipe (26) passes through the through hole and is wrapped around the outside of the third guide wheel (16). One end of the water supply pipe (26) is connected to the outside. A cleaning nozzle (27) is provided, one end of which is connected to the other end of the water supply pipe (26). The pipe take-up machine (25) is located at the end of the water pipe (26) away from the third guide wheel (16) and can make the water pipe (26) wrap around the pipe take-up machine (25).

9. The double-arm cleaning device inside the tank according to claim 8, characterized in that: Also includes: A conveying structure; the conveying structure is disposed above the control box (6) and is fixedly connected to the control box (6); the conveying structure includes: The first gear (17) is rotatably connected to the control box (6); Two sets of second gears (18) are symmetrically arranged on the edge of the first gear (17) and mesh with the first gear (17); Two sets of fourth guide wheels (19) are symmetrically arranged on both sides of the water supply pipe (26), and the axis of the fourth guide wheel (19) is fixedly connected to the axis of the second gear (18); The first motor (20) is fixedly connected to the shaft of the first gear (17) at its output end.

10. The tank-mounted double-arm cleaning device according to claim 1, characterized in that: Also includes: Can lid (11); the can lid (11) is fitted on the outside of the extension arm assembly and is fixedly connected to the control box (6).

Images