Small water jet rust removal machine

Abstract

The application discloses a small water jet rust removal machine, which comprises a frame, an arm rod and a water disc, a rotary bearing and a rotary disc are arranged on the upper portion of the frame, the rotary disc is driven by a double-oil-cylinder rotary unit arranged on the surface of the frame, the telescopic arm rod is arranged on the rotary disc, two groups of symmetrically arranged third oil cylinders are arranged between the rotary disc and the telescopic arm rod, a rotatable cleaning disc is arranged on the top of the arm rod, a diesel power generation system is arranged at the back of the rotary disc and fixed to the top of the frame, and a suspension structure is arranged on the frame below the diesel power generation system and connected with a driving wheel assembly. The double oil cylinders are used as rotary power, the angle of the arm rod is more accurate and is convenient to control, the water disc brush has greater adhesion to the ship body, the rust removal efficiency is higher, the suspension structure is more suitable for bumpy roads and can easily pass through obstacles with a height of 9cm-10cm, the water disc shell is changed into a whole type, the influence of rust removal garbage on the spring is avoided, the service life of the brush is greatly improved, and the maintenance cost of the ship body is reduced.

Description

Technical Field

[0001] This invention relates to the field of water-based rust removal technology, and in particular to a small water jet rust removal machine. Background Technology

[0002] Rust removal and cleaning is a crucial service in the shipbuilding industry, an indispensable part of shipbuilding and repair, and the first step before painting. Furthermore, because ship exteriors are constantly immersed in seawater, they inevitably corrode. To improve the service life and safety of ships, rust removal and cleaning are necessary when the rust reaches a certain level. High-pressure water jet cleaning technology is a high-tech cleaning technique that has emerged internationally in recent years. High-pressure water jet cleaning features low cost, high speed, high cleaning efficiency, no damage to the cleaned object, wide application range, and no environmental pollution.

[0003] Chinese utility model patent with publication number CN220295339U discloses an integrated equipment for ultra-high pressure water jet rust removal and sewage treatment. By integrating an ultra-high pressure water pump set, sewage vacuum recovery equipment, sewage treatment device, and rust removal actuator, it can simultaneously achieve three major functions: rust removal, sewage recovery, and sewage treatment. However, due to the large size and curvature of the steel plates on the surface of ships, and the fact that ships are usually docked in outdoor ports, traditional rust removal equipment is difficult to effectively remove rust from the various characteristics of the ships and special locations such as the bottom of the ship. Even with manual assistance, it is difficult to achieve the goal of efficient rust removal. Summary of the Invention

[0004] To address the aforementioned technical problems, a small water jet rust removal machine is provided.

[0005] To achieve the above objectives, the present invention discloses a small waterjet rust removal machine, comprising a frame, a telescopic boom movably connected to the top center of the frame via a rotary table, a cleaning disc movably mounted on the top of the boom, the bottom of the rotary table being mounted on the frame via a rotary support, the rotary table being driven by a dual-cylinder rotary unit mounted on the surface of the frame, the dual-cylinder rotary unit comprising a first cylinder and a second cylinder symmetrically mounted on both sides of the frame of the rotary table, the connecting plate on the top of the rotary table being connected to the telescopic boom via two sets of symmetrically mounted third cylinders, a diesel generator system fixed to the top of the frame being provided behind the rotary table, and a suspension structure connected to the drive wheel assembly being mounted on the frame below the diesel generator system.

[0006] Furthermore, the suspension structure includes a bridge frame horizontally mounted on the frame below the diesel generator system. A reducer is installed in the flanges at both ends of the bridge frame, and a drive wheel assembly is connected to the outside of the reducer. There are sleeves on the left and right sides above the bridge frame for fixing the first spring assembly. The first spring assembly is symmetrically arranged and its top abuts against the frame. A center pin is installed in the center of the bridge frame, and the center pin passes through the rear of the frame and is fixedly connected to the bridge frame.

[0007] Furthermore, the cleaning tray includes a circular shell and an annular brush disposed inside the shell. A cross-shaped fixing frame is welded to the bottom of the shell. Each fixing frame is equipped with a caster wheel assembly disposed on the outer edge of the shell. A spring base connected to the bottom of the shell is disposed below the shell. A second spring assembly is installed between the spring base and the bottom of the shell. A coaxial hole is opened between the spring base and the center of the shell for installing a water jet device and connecting a high-pressure water pipe. The two sides of the spring base are movably connected to the water tray bracket through pins. The other end of the water tray bracket is connected to the end of the telescopic arm.

[0008] Furthermore, the first and second hydraulic cylinders have the same cylinder diameter and rod diameter, the rod chamber of the first hydraulic cylinder is connected to the rodless chamber of the second hydraulic cylinder, and the rodless chamber of the first hydraulic cylinder is connected to the rod chamber of the second hydraulic cylinder, forming a closed system.

[0009] Furthermore, the vehicle frame is equipped with lithium battery units and hydraulic power units located on the left and right sides. The hydraulic power units are respectively connected to a hydraulic steering unit that controls the steering wheel assembly at the front of the vehicle frame, a dual-cylinder slewing unit, a hydraulic luffing unit, a boom hydraulic telescopic unit, and a drive wheel assembly. Each unit is connected to the hydraulic power unit through a solenoid valve.

[0010] Furthermore, in the hydraulic circuits of the rodless chambers of the first and second cylinders of the dual-cylinder rotary unit, a balance valve and a check valve are connected in series to form a reverse pressure relief structure.

[0011] Furthermore, the hydraulic luffing unit consists of two sets of third cylinders with the same structure, and an accumulator is installed between the balance valve and the third cylinder in the hydraulic circuit of the third cylinder.

[0012] Furthermore, the drive wheel assembly includes two sets of reducers, and a synchronous motor and a flow divider valve are connected in parallel between the reducers and the hydraulic power unit.

[0013] Compared with the prior art, the beneficial effects of this invention are as follows: This invention discloses a small water jet rust removal machine, which uses a double hydraulic cylinder as the rotation power, making the boom rotation angle more precise and easier to control. At the same time, the water tray brush has a greater adhesion to the hull, resulting in higher rust removal efficiency. The suspension structure is more suitable for rust removal operations on bumpy roads. The water tray shell is changed to an integral type, with the brush installed in the shell groove. A spring is installed between the shell and the spring base, and the wire diameter is determined by experiments. This avoids the influence of rust debris on the spring, and at the same time, the problem of insufficient elasticity of the brush in contact with the hull can be solved by increasing the spring wire diameter, which greatly improves the service life of the brush and reduces the maintenance cost of the hull. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 This is the front view of the present invention.

[0017] Figure 3 This is an exploded view of the suspension structure of the present invention.

[0018] Figure 4 This is a schematic diagram of the cleaning disc of the present invention being exploded.

[0019] Figure 5 This is a schematic diagram of the hydraulic control principle of the present invention.

[0020] Figure 6 For the present invention Figure 5 The schematic diagram of the dual-cylinder hydraulic unit.

[0021] In the diagram: 1 is the frame; 11 is the suspension structure; 111 is the bridge; 112 is the first spring assembly; 113 is the center pin; 2 is the turntable; 3 is the slewing support; 4 is the dual-cylinder slewing unit; 41 is the first cylinder; 42 is the second cylinder; 5 is the boom; 6 is the cleaning disc; 61 is the housing; 62 is the brush; 63 is the mounting bracket; 64 is the caster assembly; 65 is the second spring assembly; 66 is the spring base; 67 is the water pan bracket; 7 is the third cylinder; 8 is the diesel generator system; 80 is the hydraulic power unit; 81 is the hydraulic steering unit; 82 is the hydraulic luffing unit; 83 is the boom hydraulic telescopic unit; 84 is the solenoid valve; 85 is the balance valve; 86 is the accumulator; 87 is the synchronous motor; 88 is the flow divider valve; 9 is the drive wheel assembly; 91 is the reducer. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0023] One embodiment of the present invention, such as Figure 1 and Figure 2 As shown, a telescopic boom 5 is movably connected to the top center of the frame 1 via a turntable 2. A washing disc 6 is movably mounted on the top of the boom 5. The bottom of the turntable 2 is mounted on the frame 1 via a rotary support 3. The turntable 2 is driven by a dual-cylinder rotary unit 4 mounted on the surface of the frame 1. The dual-cylinder rotary unit 4 includes a first cylinder 41 and a second cylinder 42 symmetrically mounted on both sides of the frame 1 on the turntable 2. The connecting plate on the top of the turntable 2 is connected to the telescopic boom 5 via two sets of symmetrically mounted third cylinders 7. A diesel engine fixed to the top of the frame 1 is located behind the turntable 2. The diesel generator system 8 has a suspension structure 11 installed on the frame 1 below it, which is connected to the drive wheel assembly 9. The dual-cylinder rotary unit controls the horizontal rotation of the cleaning disc and the boom, while the third cylinder controls the boom tilt angle. This allows the cleaning disc to adhere to the hull surface from different angles for cleaning and rust removal, making it particularly suitable for rust removal on the bottom of the ship. The use of dual cylinders as the rotary power source allows for more precise boom rotation angles and easier control. At the same time, the water plate brush has a greater adhesion to the hull, resulting in higher rust removal efficiency. This product has a simple structure, complete functions, is easy to operate, and has a low failure rate.

[0024] like Figure 3 As shown, the suspension structure 11 includes a bridge frame 111 horizontally mounted on the frame 1 below the diesel generator system 8. A reducer 91 is installed inside the flanges at both ends of the bridge frame 111. A drive wheel assembly 9 is connected to the outside of the reducer 91. Sleeves for fixing the first spring assembly 112 are provided on the left and right sides above the bridge frame 111. The first spring assemblies 112 are symmetrically arranged, and their tops abut against the frame 1. A center pin 113 is installed at the center of the bridge frame 111, passing through the rear of the frame 1 and the bridge frame 111, thus fixing the bridge frame 111 to the frame 1. The original drive wheel assembly and reducer were directly mounted on the frame, forming a rigid connection with good stability. However, shipyard work sites are often uneven and full of potholes. If one drive wheel gets stuck in a pothole, the other drive wheel will keep slipping, making the vehicle unable to move. To solve the problem of being blocked by potholes, the drive wheel mounting method was improved. The drive wheel assembly and reducer are mounted on the bridge frame, which is connected to the frame by a center pin. A set of springs is installed on each of the left and right sides above the bridge frame to adjust and improve the performance of the suspension system. The suspension structure of this application is more suitable for dealing with bumpy roads.

[0025] like Figure 4 As shown, the cleaning tray 6 includes a circular housing 61 and an annular brush 62 disposed inside the housing 61. A cross-shaped set of fixing brackets 63 is welded to the bottom of the housing 61. Each fixing bracket 63 is equipped with a caster wheel assembly 64 located on the outer edge of the housing 61, used to guide the cleaning tray's movement on the hull surface, resulting in low rolling friction resistance. A spring base 66 connected to the bottom of the housing 61 is disposed below the housing 61. A second spring assembly 65 is installed between the spring base 66 and the bottom of the housing 61, providing cushioning when the cleaning tray is pressed against the hull surface. A coaxial hole is formed between the spring base 66 and the center of the housing 61 for installing a water jet device and connecting it to a high-pressure water pipe. The water jet device removes rust from the hull surface, while the brush assists in cleaning. The spring base 66 is connected to the water tray bracket 6 on both sides via pins. 7. The other end of the water tray bracket 67 is connected to the end of the telescopic arm 5. The cleaning tray can rotate around the central axis of the arm along the water tray bracket to better fit the hull surface. The traditional water tray shell is a split structure, with the shells connected by springs. When used in the shipyard, it was found that the impurities after rust removal blocked the gaps between the shells, causing the springs to lose their function. This resulted in rigid contact between the brush and the hull, and the brush wore out very quickly. To solve the above problems, the water tray shell was changed to an integral type. The brush is installed in the groove of the shell, and a spring is installed between the shell and the spring base. The wire diameter was determined by the test. This not only avoids the influence of rust removal debris on the spring, but also solves the problem of insufficient elasticity of the brush in contact with the hull by increasing the spring wire diameter. This greatly improves the service life of the brush and reduces the maintenance cost of the hull.

[0026] The first hydraulic cylinder 41 and the second hydraulic cylinder 42 have the same cylinder diameter and rod diameter. The rod chamber of the first hydraulic cylinder 41 is connected to the rodless chamber of the second hydraulic cylinder 42, and the rodless chamber of the first hydraulic cylinder 41 is connected to the rod chamber of the second hydraulic cylinder 42, forming a closed system.

[0027] like Figure 5 As shown, the frame 1 houses lithium battery units and hydraulic power units 80 located on the left and right sides. The lithium battery units provide power to the entire system via a diesel generator system. The hydraulic power units specifically employ hydraulic pumps. The hydraulic power units 80 are connected to a hydraulic steering unit 81 (controlling the front steering wheel assembly), a dual-cylinder slewing unit 4, a hydraulic luffing unit 82, a boom hydraulic telescopic unit 83, and a drive wheel assembly. Throttling orifices are also provided in the hydraulic circuits of the dual-cylinder slewing unit and the hydraulic luffing unit. The boom hydraulic telescopic unit includes a cylinder structure located inside the boom. Each unit is connected to the hydraulic power unit 80 via a solenoid valve 84. Figure 6As shown, in the double-cylinder rotary unit 4, a balance valve 85 and a check valve are connected in series in the hydraulic circuits of the rodless chamber of the first cylinder 41 and the rodless chamber of the second cylinder 42 to form a reverse pressure relief structure. The hydraulic amplitude-changing unit 82 consists of two sets of third cylinders 7 with the same structure. An accumulator 86 is provided between the balance valve 85 and the third cylinder 7 in the hydraulic circuit of the third cylinder 7. The drive wheel assembly includes two sets of reducers 91. A synchronous motor 87 and a flow divider valve 88 are connected in parallel between the reducers 91 and the hydraulic power unit 80. A two-position three-way solenoid valve and a pressure reducing valve are also provided in the hydraulic circuit of the drive wheel assembly. The electrical circuits of the drive wheel assembly are connected to each solenoid valve.

[0028] The working principle of the dual-cylinder rotary unit in this application is as follows: Figure 6 As shown, the left side is the first hydraulic cylinder and the right side is the second hydraulic cylinder. When pressurized oil enters the rodless chamber of the first hydraulic cylinder, the boom will rotate clockwise with the rotary table, and the cleaning disc installed on its upper part will fit against the hull. At this time, the oil pressure in the rodless chamber of the first hydraulic cylinder will gradually increase. In order to prevent the torque generated by the fitting force from causing bending and deformation damage to the boom, when the oil pressure in the rodless chamber reaches twice the working pressure, the balance valve will open in the reverse direction to release pressure in the rodless chamber through the one-way valve and maintain the normal working pressure of the rodless chamber. The same applies to the reverse direction.

[0029] Several points need to be clarified: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships, and the relative positional relationships may change when the absolute position of the described objects changes. Second, in this document, relational terms such as "first" and "second" are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities.

[0030] The examples above are merely illustrative of the present invention and do not constitute a limitation on the scope of protection of the present invention. All designs that are the same as or similar to the present invention are within the scope of protection of the present invention.

Claims

1. A small waterjet rust removal machine, comprising a frame (1), characterized in that, The top center of the frame (1) is movably connected to a telescopic arm (5) via a turntable (2). A cleaning disc (6) is movably mounted on the top of the arm (5). The bottom of the turntable (2) is mounted on the frame (1) via a rotary support (3). The turntable (2) is driven by a double-cylinder rotary unit (4) mounted on the surface of the frame (1). The double-cylinder rotary unit (4) includes a first cylinder (41) and a second cylinder (42) symmetrically mounted on both sides of the frame (1) of the turntable (2). The connecting plate on the top of the turntable (2) is connected to the telescopic arm (5) on both sides. The two cylinders are connected by two sets of symmetrically installed third cylinders (7). A diesel generator system (8) is fixed to the top of the frame (1) behind the turntable (2). The frame (1) below the diesel generator system (8) is equipped with a suspension structure (11) and connected to the drive wheel assembly (9). The cylinder diameter and rod diameter of the first cylinder (41) and the second cylinder (42) are the same. The rod chamber of the first cylinder (41) is connected to the rodless chamber of the second cylinder (42), and the rodless chamber of the first cylinder (41) is connected to the rod chamber of the second cylinder (42), forming a closed system.

2. A small water jet rust remover according to claim 1, characterized in that, The suspension structure (11) includes a bridge (111) horizontally mounted on the frame (1) below the diesel generator system (8). A reducer (91) is installed in the flanges at both ends of the bridge (111). A drive wheel assembly (9) is connected to the outside of the reducer (91). Sleeves for fixing the first spring assembly (112) are provided on the left and right sides above the bridge (111). The first spring assembly (112) is symmetrically arranged and the top of the first spring assembly (112) abuts against the frame (1). A center pin (113) is installed in the center of the bridge (111). The center pin (113) passes through the rear of the frame (1) and the bridge (111) and is fixedly connected to the frame (1).

3. A small water jet rust remover according to claim 1, characterized in that, The cleaning tray (6) includes a circular shell (61) and an annular brush (62) disposed inside the shell (61). A cross-shaped set of fixing frames (63) is welded to the bottom of the shell (61). A universal wheel assembly (64) is installed on each set of fixing frames (63) on the outer edge of the shell (61). A spring base (66) connected to the bottom of the shell (61) is disposed below the shell (61). A second spring assembly (65) is installed between the spring base (66) and the bottom of the shell (61). A coaxial hole is opened between the spring base (66) and the center of the shell (61) for installing a water jet device and connecting a high-pressure water pipe. The two sides of the spring base (66) are movably connected to the water tray bracket (67) through pins. The other end of the water tray bracket (67) is connected to the end of the telescopic arm (5).

4. A small water jet rust remover according to claim 1, characterized in that, The frame (1) is equipped with a lithium battery unit and a hydraulic power unit (80) located on the left and right sides. The hydraulic power unit (80) is connected to a hydraulic steering unit (81) that controls the steering wheel assembly at the front of the frame, a double cylinder slewing unit (4), a hydraulic luffing unit (82), a boom hydraulic telescopic unit (83), and a drive wheel assembly (9). Each unit is connected to the hydraulic power unit (80) through a solenoid valve (84).

5. A small water jet rust remover according to claim 4, characterized in that, In the dual-cylinder rotary unit (4), a balance valve (85) and a check valve are connected in series in the hydraulic circuit of the rodless chamber of the first cylinder (41) and the rodless chamber of the second cylinder (42) to form a reverse pressure relief structure.

6. A small water jet rust remover according to claim 4, characterized in that, The hydraulic variable amplitude unit (82) consists of two sets of third cylinders (7) with the same structure. An accumulator (86) is provided between the balance valve (85) and the third cylinder (7) in the hydraulic circuit of the third cylinder (7).

7. A small waterjet rust remover according to claim 4, characterized in that, The drive wheel assembly (9) includes two sets of reducers (91), and a synchronous motor (87) and a flow divider valve (88) are connected in parallel between the reducers (91) and the hydraulic power unit (80).

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