A waterjet cutting device with remote control function

What is AI technical title?
AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
By setting water outlet pipes and movable nozzles on both sides of the main nozzle of the waterjet cutting device, the recoil force and lateral vibration are counteracted, the problem of cutting path deviation is solved, and high-precision cutting and improved stability are achieved.

CN224575420UActive Publication Date: 2026-07-31BALOSS GRP LTD

View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: BALOSS GRP LTD
Filing Date: 2025-07-04
Publication Date: 2026-07-31

AI Technical Summary

Technical Problem

Existing waterjet cutting equipment causes the cutting path to deviate when cutting thick steel plates due to recoil and lateral vibration, affecting cutting accuracy and finished product quality, and cannot meet the requirements of high-precision processing.

Method used

A waterjet cutting device with remote control function was designed. By setting water outlet pipes on both sides of the main nozzle to spray high-pressure water at a 45° angle to counteract lateral vibration, the device uses a movable nozzle to spray water at a backward tilt angle to counteract recoil force, and the device's stability is improved by using a robotic arm and roller structure to ensure cutting accuracy.

Benefits of technology

It effectively reduces equipment displacement error during the cutting process, improves cutting accuracy and device stability, and keeps the work site clean.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure CN224575420U_ABST

Patent Text Reader

Abstract

This utility model discloses a waterjet cutting device with remote control function, belonging to the field of waterjet cutting technology. It includes a base, a panoramic camera for observing the cutting environment is fixedly installed on the top of the base, a receiving antenna for improving signal strength is fixedly installed on one side of the panoramic camera, a roller structure for remote control of movement is rotatably connected to the bottom of the base, and a main nozzle for cutting is rotatably connected to the top of the base. When this utility model is in use, water outlet pipes are set on both sides of the main nozzle, so that the high-pressure water jets are symmetrically sprayed out at a 45° angle. The reverse torque generated by the water jet counteracts the lateral vibration of the main nozzle, ensuring cutting accuracy. At the same time, the sprayed water jet can wash away the debris generated by cutting in time, keeping the work site clean. The movable nozzle sprays at a backward tilt angle, and the axial component force generated by it effectively counteracts the recoil force of the main nozzle when it sprays, further reducing the displacement error of the equipment caused by the reaction force.

Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of waterjet cutting technology, specifically a waterjet cutting device with remote control function. Background Technology

[0002] In modern industrial processing and emergency rescue operations, waterjet cutting technology is widely used in metal processing, stone mining, building demolition and other fields due to its advantages such as cold cutting, no thermal deformation, environmental protection and high efficiency.

[0003] Chinese patent discloses a remote-controlled flexible shaft cutter for mining (publication number CN204997177U). The patent includes a strong magnetic wheel, a magnetic wheel shaft, a base, a bearing housing, a flexible shaft, a handle, a handwheel, a bearing housing bracket, an active synchronizing wheel, a synchronizing belt, a waterjet handle bracket, a waterjet handle, a waterjet rod, a waterjet nozzle, a magnetic wheel shaft bracket, and a driven synchronizing wheel. The strong magnetic wheel is magnetically attached to the steel plate to fix the base. Rotating the handwheel drives the active synchronous wheel to rotate via the flexible shaft. The synchronous belt drives the driven synchronous wheel, which in turn drives the strong magnetic wheel to rotate, causing the chassis to crawl forward. The chassis drives the water jet bar, and the water jet nozzle moves forward to cut the object. In actual operation, in order to meet the cutting requirements, it is necessary to cut the material by spraying ultra-high pressure water. However, when the main nozzle sprays ultra-high pressure water, it will generate strong recoil force and lateral vibration. Taking the cutting of thick steel plate as an example, when the main nozzle sprays pressure of 300-400MPa, the recoil force can cause the equipment to have a displacement deviation of 0.5-1 cm. Lateral vibration causes the cutting path to deviate, and the kerf width error exceeds ±2mm, which seriously affects the cutting accuracy and the quality of the finished product, and cannot meet the requirements of high-precision processing. Utility Model Content

[0004] The purpose of this invention is to provide a waterjet cutting device with remote control function to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A waterjet cutting device with remote control function includes a base. A panoramic camera for observing the cutting environment is fixedly installed on the top of the base. A receiving antenna for enhancing signal strength is fixedly installed on one side of the panoramic camera. A roller structure for remotely controlling movement is rotatably connected to the bottom of the base. A main nozzle for cutting is rotatably connected to the top of the base, and ultra-high pressure water is ejected from the main nozzle to precisely cut the object to be cut. A robotic arm structure for adjusting the position and angle of the main nozzle is rotatably connected to the top of the base. A water distribution shell is fixedly connected to the top of the main nozzle. Water outlet pipes for increasing the stability of the main nozzle are fixedly installed on both sides of the water distribution shell. A movable nozzle for counteracting reaction force is rotatably connected to the top of the water distribution shell. A flow divider for adjusting the water flow ratio is fixedly installed inside the water distribution shell. An adjustment structure for adjusting the angle of the movable nozzle is fixedly installed on the top of the water distribution shell. The angle of the movable nozzle is adjusted according to the water flow rate through the adjustment structure, thereby increasing the flow pressure and reducing the equipment displacement error during the cutting process.

[0007] As a further embodiment of this utility model, the adjustment structure includes a support shell, which is fixedly connected to the top of the water distribution shell and provides rigid support for the movable nozzle, thus physically limiting the movable nozzle and ensuring that the movable nozzle can only be rotated within a preset space.

[0008] As a further embodiment of this utility model, a fixing block for positioning is fixedly connected to the top of the water distribution shell, and an electric push rod for axially rotating and adjusting the movable nozzle is fixedly installed on one side of the fixing block. A sliding plate is fixedly connected to the top of the electric push rod, and a shaped block for driving the movable nozzle to rotate axially back and forth is rotatably connected to the top of the sliding plate.

[0009] As a further embodiment of this utility model, the robotic arm structure includes a rotating base block, a main rod rotatably connected to the inner cavity of the rotating base block, a secondary rod rotatably connected to the outer wall of the main rod, and a water storage box for storing water rotatably connected to the bottom of the secondary rod.

[0010] As a further embodiment of this utility model, the roller structure includes a triangular connecting plate, which is rotatably connected to both sides of the outer wall of the base. Three arc-shaped plates are rotatably connected between every two triangular connecting plates via a movable shaft, and the three arc-shaped plates form a wheel for rolling on the ground. Semi-circular gears for driving the arc-shaped plates to rotate are fixedly connected inside the three arc-shaped plates. A main gear for driving the arc-shaped plates to adjust their angle is rotatably connected between every two triangular connecting plates.

[0011] As a further embodiment of this utility model, the inner cavity of the base is rotatably connected to a non-circular gear for driving the arc plate to rotate via a bearing. The tooth blocks on the outer wall of the non-circular gear are triangular in shape to facilitate reconnection after disconnection. The end of the non-circular gear away from the triangular connecting plate is rotatably connected to a transmission gear for driving the main gear to rotate.

[0012] Compared with the prior art, the beneficial effects of this utility model are: 1. When this utility model is used, water outlet pipes are set on both sides of the main nozzle, so that the high-pressure water flow is symmetrically sprayed out at a 45° angle. The reverse torque generated by the water jet counteracts the lateral vibration of the main nozzle, ensuring cutting accuracy. At the same time, the sprayed water can wash away the debris generated by cutting in time, keeping the work site clean. The movable nozzle sprays at a backward angle, and the axial component force generated by it effectively counteracts the recoil force when the main nozzle sprays, further reducing the displacement error of the equipment caused by the reaction force.

[0013] 2. When this utility model is in use, the transmission gear drives the main gear to rotate, causing the three arc-shaped plates to rotate and unfold outward, standing on the ground at a 120° angle, fixing the position of the device, preventing displacement due to reaction force during cutting, and effectively improving the stability of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a waterjet cutting device with remote control function.

[0015] Figure 2 This is a schematic diagram of the main nozzle of a waterjet cutting device with remote control function.

[0016] Figure 3 This is a schematic diagram of the adjustment structure of a waterjet cutting device with remote control function.

[0017] Figure 4 This is a schematic diagram of the roller structure of a waterjet cutting device with remote control function.

[0018] Figure 5 This is a schematic diagram of the arc-shaped plate of a waterjet cutting device with remote control function.

[0019] Figure 6 This is a schematic diagram of the chuck of a waterjet cutting device with remote control function.

[0020] In the diagram: 1. Base; 2. Roller structure; 3. Main nozzle; 4. Robotic arm structure; 5. Water distribution shell; 6. Water outlet pipe; 7. Movable nozzle; 8. Adjustment structure; 9. Diverter; 101. Panoramic camera; 102. Receiving antenna; 201. Triangular connecting plate; 202. Arc plate; 203. Semicircular gear; 204. Main gear; 205. Irregular gear; 206. Transmission gear; 207. Sliding rod; 208. Movable gear; 209. Roller; 210. Rotating gear; 211. Chain 212. Chuck; 213. Belt; 214. Motor; 215. Dual-head motor; 216. Swing block; 217. Tilting block; 401. Rotating base block; 402. Main rod; 403. Secondary rod; 404. Water storage box; 405. Motor 1; 406. Motor 2; 407. Motor 3; 408. High-pressure pump; 801. Support shell; 802. Fixing block; 803. Electric actuator; 804. Sliding plate; 805. Irregularly shaped block; 806. Irregularly shaped plate; 807. Tilting plate; 808. Connecting rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4A waterjet cutting device with remote control function includes a base 1. A panoramic camera 101 for observing the cutting environment is fixedly installed on the top of the base 1. A receiving antenna 102 for enhancing signal strength is fixedly installed on one side of the panoramic camera 101, and the receiving antenna 102 is located on the top of the base 1. A roller structure 2 for remote control movement is rotatably connected to the bottom of the base 1, and the roller structure 2 drives the device to move to areas that are inaccessible by humans for operation. A main nozzle 3 for cutting is rotatably connected to the top of the base 1, and the main nozzle 3 ejects ultra-high pressure water to precisely cut the object to be cut. A robotic arm structure 4 for adjusting the position and angle of the main nozzle 3 is rotatably connected to the top of the base 1. The main nozzle 3 is located at the end of the robotic arm structure 4, and during operation, it drives the main nozzle 3 to perform 360° omnidirectional rotation cutting. A water distribution shell 5 is fixedly connected to the top of the main nozzle 3, and water outlets for increasing the stability of the main nozzle 3 are fixedly installed on both sides of the water distribution shell 5. Pipe 6, the water outlet pipe 6 is located on the left and right sides of the water distribution shell 5, each extending at a 45° angle. When the main nozzle 3 is working, the water outlet pipes 6 on both sides will split and spray out part of the high-pressure water flow. The reverse torque generated by the symmetrical spraying will counteract the lateral vibration of the main nozzle 3. At the same time, the sprayed water can also wash away the debris generated during cutting, improving the cleanliness of the work site. The top of the water distribution shell 5 is rotatably connected to a movable nozzle 7 for counteracting the reaction force. By adjusting the angle of the movable nozzle 7, it can be sprayed at a backward tilt angle. The axial component force counteracts the recoil force when the main nozzle 3 is sprayed. The inner cavity of the water distribution shell 5 is fixedly installed with a diverter 9 for adjusting the water flow splitting ratio. The pressure and flow rate are monitored in real time by the pressure sensor built into the diverter 9. The diverting ratio is automatically adjusted according to the hardness of the object. The top of the water distribution shell 5 is fixedly installed with an adjustment structure 8 for adjusting the angle of the movable nozzle 7. The angle of the movable nozzle 7 is adjusted according to the water flow rate by the adjustment structure 8, which increases the splitting pressure and reduces the equipment displacement error during cutting.

[0023] Please see Figures 2-3 The adjustment structure 8 includes a support shell 801, which is fixedly connected to the top of the water distribution shell 5. The movable nozzle 7 is rotatably connected to the inner cavity of the support shell 801, and the support shell 801 provides rigid support for the movable nozzle 7, forming a physical limit on the movable nozzle 7, ensuring that the movable nozzle 7 can only rotate within a preset space, avoiding shaking or deviation caused by lack of restraint, and improving the stability of the water spray direction adjustment.

[0024] Please see Figures 2-3A fixing block 802 for positioning is fixedly connected to the top of the water separator 5. An electric push rod 803 for axially rotating and adjusting the movable nozzle 7 is fixedly installed on one side of the fixing block 802. The bottom of the electric push rod 803 is fixedly connected to the top of the water separator 5. A sliding plate 804 is fixedly connected to the top of the electric push rod 803. A shaped block 805 for driving the movable nozzle 7 to rotate axially back and forth is rotatably connected to the top of the sliding plate 804. Specifically, a shaped plate 806 is rotatably connected to the inner cavity of the shaped block 805 via a movable shaft, and the bottom of the shaped plate 806 is rotatably connected to the inner cavity of the sliding plate 804 via a movable shaft. The end of the shaped block 805 away from the shaped plate 806 is rotatably connected to the movable nozzle 7 via a pin. The outer wall of the nozzle 7 and the inner cavity of the sliding plate 804 are rotatably connected to a flip plate 807 via a movable shaft. The end of the flip plate 807 away from the irregular plate 806 is rotatably connected to a connecting rod 808 via a movable shaft. The top of the inner cavity of the connecting rod 808 is rotatably connected to the outer wall of the irregular block 805 via a movable shaft, while the bottom of the inner cavity of the connecting rod 808 is rotatably connected to the outer wall of the fixed block 802 via a movable shaft. When the electric push rod 803 extends or retracts, it drives the irregular block 805 to flip via the irregular plate 806 and the flip plate 807 respectively, thereby adjusting the angle of the movable nozzle 7. At the same time, when the flip plate 807 rotates, it can drive the connecting rod 808 to rotate around the fixed block 802, so that the fixed block 802 positions the irregular block 805.

[0025] Please see Figure 1 The robotic arm structure 4 includes a rotating base block 401. A main rod 402 is rotatably connected to the inner cavity of the rotating base block 401 via bearings. A secondary rod 403 is rotatably connected to the outer wall of the main rod 402 via bearings. A water storage box 404 for water storage is rotatably connected to the bottom of the secondary rod 403. The bottom of the water storage box 404 is fixedly connected to the top of the water distribution shell 5. A high-pressure pump 408 for driving water pumping is fixedly connected to the inner cavity of the secondary rod 403. The output end of the high-pressure pump 408 is fixedly connected to the water storage box 404, and the input end of the high-pressure pump 408 is fixedly connected to a water supply pipe, which can be connected to a water source to provide water flow support for the device. Specifically, a motor 405 for driving the rotating base block 401 to rotate is fixedly installed in the inner cavity of the base 1. The output shaft is fixedly connected to the bottom of the rotating base block 401. The rotating base block 401 is driven by motor 1 405 to achieve 360° horizontal rotation. Motor 2 406, which is used to drive the main rod 402 to rotate, is fixedly installed on the side of the rotating base block 401. The output shaft of motor 2 406 passes through the rotating base block 401 and is fixedly connected to the inner cavity of the main rod 402. Motor 3 407, which is used to drive the secondary rod 403 to rotate, is rotatably connected to the inner cavity of the main rod 402. The output shaft of motor 3 407 passes through the main rod 402 and is fixedly connected to the inner cavity of the secondary rod 403. This allows the rotating base block 401 to adjust the position of the main nozzle 3 according to the position of the equipment to be cut by driving motor 1 405, motor 2 406 and motor 3 407, so that the main nozzle 3 can be adjusted by the rotating base block 401 in coordination with the main rod 402 and the secondary rod 403.

[0026] Please see Figures 4-5 The roller structure 2 includes triangular connecting plates 201, which are rotatably connected to both sides of the outer wall of the base 1. Four sets of triangular connecting plates 201 are rotatably connected to both sides of the outer wall of the base 1 in pairs. Each pair of triangular connecting plates 201 is rotatably connected to three arc-shaped plates 202 via a movable shaft, forming a wheel for rolling on the ground. Each of the three arc-shaped plates 202 has a fixed semi-circular gear 203 inside for rotating the arc-shaped plates 202. Each pair of triangular connecting plates 201... Each of the three arc plates 202 is rotatably connected to a main gear 204 for adjusting the angle of the arc plates 202. Specifically, a semi-circular gear 203 surrounds the outer wall of the main gear 204 and meshes with it. When the main gear 204 rotates, the three semi-circular gears 203 drive the arc plates 202 to adjust their angle, causing the three arc plates 202 to fold together to form a circle. The arc plates 202 move on the ground and stand upright on the ground when they are fully extended and the adjacent plates form a 120° angle, preventing them from continuing to roll. This avoids the device from shifting backward due to the large impact generated during cutting.

[0027] Please see Figures 4-6The inner cavity of the base 1 is rotatably connected to a non-circular gear 205 for driving the arc plate 202 to rotate via a bearing. The end of the non-circular gear 205 away from the base 1 is fixedly connected to a triangular connecting plate 201. The teeth on the outer wall of the non-circular gear 205 are triangular in shape to facilitate reconnection after disconnection. The end of the non-circular gear 205 away from the triangular connecting plate 201 is rotatably connected to a transmission gear 206 for driving the main gear 204 to rotate. A sliding rod 207 is rotatably connected to one side of the transmission gear 206. Both ends of the sliding rod 207 are rotatably connected to movable gears 208 for driving the transmission gear 206 and the non-circular gear 205 to rotate. A roller 209 is rotatably connected to the top of the movable gear 208. Both ends of the roller 209 are fixedly connected to rotating gears 210 for pushing the triangular connecting plate 201 to rotate. The rotating gears 210 mesh with the movable gear 208. There are two rollers 209 in total. The outer walls of both rollers 209 are rotatably connected to the rollers 209. A chain 211 for transmission is connected to the roller 209. A chuck 212 for tensioning and limiting the chain 211 is fixedly connected to the outer wall of the roller 209. The chain 211 is rotatably connected to the outer wall of the chuck 212. A belt 213 for driving the roller 209 is rotatably connected to the outer wall of the roller 209 through a driven wheel. A motor 214 for driving the roller 209 is fixedly installed in the inner cavity of the base 1. The belt 213 is rotatably connected to the output end of the motor 214 through a drive wheel. The motor 214 drives the output shaft to drive the roller 209 to rotate through the belt 213. When the roller 209 rotates, the chain 211 makes the other roller 209 rotate synchronously. This drives the four rotating gears 210 to rotate. The rotating gears 210 push the transmission gear 206 and the special gear 205 to rotate together, thereby realizing the rolling of the arc plate 202 and moving the entire device to the working position. A dual-head motor 215 is fixedly installed in the inner cavity of the base 1. Both ends of the dual-head motor 215 are fixedly connected to swing blocks 216. Both ends of the swing blocks 216 are rotatably connected to flip blocks 217 for pulling the sliding rod 207 to slide via pins. The flip blocks 217 and the sliding rod 207 are rotatably connected via pins. By driving the dual-head motor 215, its output shaft drives the swing blocks 216 to flip. Then, the flip blocks 217 pull the sliding rod 207 to slide with the movable gear 208. When the movable gear 208 meshes with the transmission gear 206, it pushes the transmission gear 206 to drive the main gear 204 to rotate, adjusting the angle of the arc plate 202. When the movable gear 208 is pushed to mesh with the transmission gear 206 and the irregular gear 205, the movable gear 208 pushes the transmission gear 206 and the irregular gear 205 to rotate simultaneously, thereby realizing the rolling of the arc plate 202 and driving the entire device to move.

[0028] The working principle of this utility model is as follows: First, the drive motor 214 drives the output shaft to rotate a roller 209 via the belt 213. While one roller 209 rotates, the chain 211 causes another roller 209 to rotate synchronously, which in turn drives four rotating gears 210 to rotate. These rotating gears then push the transmission gear 206 and the irregular gear 205 to rotate together, thus causing the arc-shaped plate 202 to roll. This moves the entire device to the working position and drives the dual-head motor 215, whose output shaft drives the swing block 216 to rotate. The rotating block 217 then pulls the sliding rod 207 to slide against the movable gear 208. When the movable gear 208 meshes with the transmission gear 206, it pushes the transmission gear 206... The main gear 204 is driven to rotate, causing the three arc-shaped plates 202 to rotate and unfold outwards so that they can stand on the ground and not roll. According to the position of the equipment to be cut, the drive motors 405, 406 and 407 are used to make the rotating base block 401 work with the main rod 402 and the secondary rod 403 to adjust the position of the main nozzle 3. Before the main nozzle 3 is ready to cut, according to the hardness of the object to be cut, the electric push rod 803 is driven to extend and retract. When it extends and retracts, the irregular plate 806 and the flipping plate 807 drive the irregular block 805 to flip, adjusting the angle of the movable nozzle 7. At the same time, the diverter 9 automatically adjusts the water flow diversion ratio according to the feedback of the pressure sensor, and directs part of the high-pressure water flow to the two water outlet pipes 6 and the movable nozzle 7 respectively. During the cutting operation, the main nozzle 3 ejects ultra-high pressure water to cut the object. The water outlet pipes on both sides 6 spray the high pressure water at a symmetrical angle of 45°. The reverse torque generated by the water jet counteracts the lateral vibration of the main nozzle 3, ensuring cutting accuracy. The movable nozzle 7 sprays at a backward tilt angle, and the axial component force generated by it effectively counteracts the recoil force when the main nozzle 3 is spraying, further reducing the displacement error of the equipment caused by the reaction force. At the same time, the main rod 402 and the secondary rod 403 can be flexibly adjusted during the cutting process, driving the main nozzle 3 to perform 360° omnidirectional rotation cutting, adapting to the cutting needs of different shapes and angles. After cutting is completed, the dual-head motor 215 is driven again, which drives the transmission gear 206 and the irregular gear 205 to rotate simultaneously through the movable gear 208, causing the arc plate 202 to close into a circle. The motor 214 is then started, and the device can move to the next working position.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A water cutting device with remote control function, comprising a base (1), characterized in that, A panoramic camera (101) for observing the cutting environment is fixedly installed on the top of the base (1). A receiving antenna (102) for enhancing signal strength is fixedly installed on one side of the panoramic camera (101). A roller structure (2) for remote control of movement is rotatably connected to the bottom of the base (1). A main nozzle (3) for cutting is rotatably connected to the top of the base (1), and ultra-high pressure water is ejected through the main nozzle (3) to precisely cut the object to be cut. A device for adjusting the main nozzle (1) is rotatably connected to the top of the base (1). 3) The position and angle of the robotic arm structure (4) is fixedly connected to the top of the main nozzle (3) and the water distribution shell (5) is fixedly installed on both sides of the water distribution shell (5) to increase the stability of the main nozzle (3). The top of the water distribution shell (5) is rotatably connected to the movable nozzle (7) to counteract the reaction force. The inner cavity of the water distribution shell (5) is fixedly installed with a diverter (9) for adjusting the water flow ratio. The top of the water distribution shell (5) is fixedly installed with an adjustment structure (8) for adjusting the angle of the movable nozzle (7).

2. The water cutting device with remote control function according to claim 1, characterized in that, The adjustment structure (8) includes a support shell (801), which is fixedly connected to the top of the water distribution shell (5) and provides rigid support for the movable nozzle (7) through the support shell (801), forming a physical limit on the movable nozzle (7) to ensure that the movable nozzle (7) can only be rotated within a preset space.

3. A waterjet cutting device with remote control function according to claim 2, characterized in that, The top of the water separator (5) is fixedly connected to a fixing block (802) for positioning. An electric push rod (803) for axially rotating and adjusting the movable nozzle (7) is fixedly installed on one side of the fixing block (802). A sliding plate (804) is fixedly connected to the top of the electric push rod (803). A shaped block (805) for driving the movable nozzle (7) to rotate back and forth axially is rotatably connected to the top of the sliding plate (804).

4. The water cutting device with remote control function according to claim 1, characterized in that, The robotic arm structure (4) includes a rotating base block (401), a main rod (402) is rotatably connected to the inner cavity of the rotating base block (401), a secondary rod (403) is rotatably connected to the outer wall of the main rod (402), and a water storage box (404) for storing water is rotatably connected to the bottom of the secondary rod (403).

5. The water cutting device with remote control function according to claim 1, characterized in that, The roller structure (2) includes a triangular connecting plate (201), which is rotatably connected to both sides of the outer wall of the base (1). Three arc plates (202) are rotatably connected between every two triangular connecting plates (201) via a movable shaft, and the three arc plates (202) form a wheel for rolling on the ground. The interior of each of the three arc plates (202) is fixedly connected with a semi-circular gear (203) for driving the arc plate (202) to rotate. A main gear (204) for driving the arc plate (202) to adjust its angle is rotatably connected between every two triangular connecting plates (201).

6. The water cutting device with remote control function according to claim 5, characterized in that, The inner cavity of the base (1) is rotatably connected to a special gear (205) for driving the arc plate (202) to rotate via a bearing. The tooth block shape of the outer wall of the special gear (205) is triangular, so that it can be reconnected after disconnection. The end of the special gear (205) away from the triangular connecting plate (201) is rotatably connected to a transmission gear (206) for driving the main gear (204) to rotate.