Concrete structure water jet cutting device

Abstract

The utility model provides a water jet cutting device for a concrete structure. The water jet cutting device is characterized in that a high-pressure nozzle is connected with a first pressure sensor, a proportional pressure control valve and a safety valve; the energy accumulator is connected with the high-pressure nozzle through a pipeline, and a second pressure sensor is connected to the energy accumulator; the booster pump is connected with the energy accumulator, and a water supply port is formed in the booster pump; a control button is arranged on the human-computer interaction interface; the controller is connected with the first pressure sensor, the proportional pressure control valve, the safety valve, the energy accumulator, the booster pump and the human-computer interaction interface. The concrete structure water jet pressure automatic control device is environment-friendly in material, small in noise pollution and suitable for various working environments, automatic pressure control in the water jet cutting process is achieved, the energy accumulator and the safety control valve are combined, and intelligent, efficient and environment-friendly cutting operation of on-site concrete members is achieved. And comprehensive requirements of urban update projects on high protection requirements of original structures, dual-carbon energy-saving targets and the like can be met.

Description

Technical Field

[0001] This utility model relates to a waterjet cutting device for concrete structures. Background Technology

[0002] Temporary components such as concrete support beams and underpinning beams at construction sites are typically demolished using methods such as pickaxe cutting and wire saw cutting. Pickaxe cutting is limited in its application due to its high noise level and the potential for vibration damage to permanent structures; while wire saw cutting also has drawbacks such as the tendency to jam, high wear and tear on the wire saw, and limited application in vertical construction. Utility Model Content

[0003] The purpose of this invention is to provide a waterjet cutting device for concrete structures.

[0004] To solve the above problems, this utility model provides a waterjet cutting device for concrete structures, comprising:

[0005] Includes a cutting system, the cutting system comprising:

[0006] A high-pressure nozzle, wherein a first pressure sensor, a proportional pressure control valve and a safety valve are connected to the high-pressure nozzle;

[0007] An accumulator is connected to the high-pressure nozzle via a pipeline, and a second pressure sensor is connected to the accumulator.

[0008] A booster pump connected to the accumulator, the booster pump being provided with a water supply port;

[0009] A human-computer interaction interface, wherein control buttons are provided on the human-computer interaction interface;

[0010] The controller is connected to a first pressure sensor, a proportional pressure control valve, a safety valve, an accumulator, a booster pump, and a human-machine interface.

[0011] Furthermore, the aforementioned waterjet cutting device for concrete structures also includes a multi-axis robotic arm connected to the high-pressure nozzle, and the multi-axis robotic arm is connected to the controller.

[0012] Furthermore, the above-mentioned waterjet cutting device for concrete structures also includes a movable chassis, on which the cutting system is mounted.

[0013] Furthermore, the above-mentioned waterjet cutting device for concrete structures also includes a housing, which is equipped with a maintenance door, and the controller and human-machine interface are installed inside the housing.

[0014] Furthermore, in the above-mentioned waterjet cutting device for concrete structures, a baffle is also provided on one side of the high-pressure nozzle.

[0015] Furthermore, the above-mentioned waterjet cutting device for concrete structures also includes a telescopic push rod, which is connected to the baffle.

[0016] Furthermore, in the aforementioned waterjet cutting device for concrete structures, the mobile chassis is also provided with a baffle storage space for storing the retractable push rod and the baffle.

[0017] Furthermore, in the aforementioned waterjet cutting device for concrete structures, a track is connected to the upper part of one side of the human-machine interface, and the retractable push rod slides within the track; the lower part of the track is the baffle storage space.

[0018] Furthermore, in the aforementioned waterjet cutting device for concrete structures, the retractable push rod is connected to the controller.

[0019] Furthermore, in the above-mentioned waterjet cutting device for concrete structures, the controller is a PLC controller or a numerical control system.

[0020] Compared with existing technologies, this utility model includes: a first pressure sensor, a proportional pressure control valve, and a safety valve connected to a high-pressure nozzle; an accumulator connected to the high-pressure nozzle via a pipeline, and a second pressure sensor connected to the accumulator; a booster pump connected to the accumulator, with a water supply port; control buttons on a human-machine interface; and a controller connected to the first pressure sensor, the proportional pressure control valve, the safety valve, the accumulator, the booster pump, and the human-machine interface. This utility model provides an automatic pressure control device for water jet cutting of concrete structures that is environmentally friendly, produces low noise pollution, and is suitable for various working environments. It achieves automatic pressure control during water jet cutting, integrating an accumulator and a safety control valve to realize intelligent, efficient, and environmentally friendly cutting operations of concrete components on-site. It can meet the comprehensive requirements of urban renewal projects, such as high requirements for the protection of original structures and dual-carbon energy-saving goals. Attached Figure Description

[0021] Figure 1 This is a first schematic diagram of a concrete structure waterjet cutting device according to an embodiment of the present invention;

[0022] Figure 2 This is a second schematic diagram of a concrete structure waterjet cutting device according to an embodiment of the present invention;

[0023] Figure 3 This is a second schematic diagram of a concrete structure waterjet cutting device according to an embodiment of the present invention;

[0024] Figure 4 This is a control flowchart of a concrete structure waterjet cutting device according to an embodiment of the present invention;

[0025] Among them, 1. multi-axis robotic arm, 2. accumulator, 3. booster pump, 4. water supply port, 5. mobile chassis, 6. high-pressure nozzle, 7. first pressure sensor, 8. second pressure sensor, 9. human-machine interface, 10. control button, 11. chassis maintenance door, 12. baffle storage space, 13. telescopic push rod, 14. baffle. Detailed Implementation

[0026] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figures 1 to 4 As shown, this utility model provides a waterjet cutting device for concrete structures, including a cutting system, the cutting system comprising:

[0028] High-pressure nozzle 6, on which a first pressure sensor 7, a proportional pressure control valve and a safety valve are connected;

[0029] Accumulator 2, which is connected to the high-pressure nozzle 6 via a pipeline, and a second pressure sensor 8 is connected to the accumulator 2;

[0030] A booster pump 3 connected to the accumulator 2 is provided with a water supply port 4.

[0031] Human-computer interaction interface 9, wherein control buttons 10 are provided on the human-computer interaction interface 9;

[0032] The controller is connected to the first pressure sensor 7, the proportional pressure control valve, the safety valve, the accumulator 2, the booster pump 3, and the human-machine interface 9.

[0033] This invention provides an automatic waterjet pressure control device for concrete structures that is environmentally friendly, produces low noise pollution, and is suitable for various working environments. It achieves automatic pressure control during the waterjet cutting process, integrating an accumulator and a safety control valve to enable intelligent, efficient, and environmentally friendly cutting of concrete components on-site. It can meet the comprehensive requirements of urban renewal projects, such as high demands for original structure protection and dual-carbon energy-saving goals.

[0034] like Figure 1 As shown, in one embodiment of the concrete structure waterjet cutting device of this utility model, a multi-axis robotic arm 1 connected to the high-pressure nozzle 6 is also included, and the multi-axis robotic arm 1 is connected to the controller.

[0035] Here, the multi-axis robotic arm 1 can achieve flexible movement of the high-pressure nozzle 6.

[0036] In one embodiment of the concrete structure waterjet cutting device of this utility model, it further includes: a movable chassis 5, and the cutting system is disposed on the movable chassis 5.

[0037] Here, as Figure 1 As shown, the lower part of the mobile chassis 5 can be equipped with rollers to enable flexible movement of the entire cutting system.

[0038] In one embodiment of the concrete structure waterjet cutting device of this utility model, a machine box is provided on the machine box, and the controller and human-machine interface 9 are provided inside the machine box.

[0039] In one embodiment of the concrete structure waterjet cutting device of this utility model, a baffle 14 is also provided on one side of the high-pressure nozzle 6 to achieve the function of blocking water.

[0040] In one embodiment of the concrete structure waterjet cutting device of this utility model, a telescopic push rod 13 is further included. The telescopic push rod 13 is connected to the baffle 14 to realize the telescopic adjustment of the position of the baffle 14.

[0041] In one embodiment of the concrete structure waterjet cutting device of this utility model, the mobile chassis 5 is further provided with a baffle storage space 12 for storing the retractable push rod 13 and the baffle 14.

[0042] In one embodiment of the concrete structure waterjet cutting device of this utility model, a track is connected to the upper part of one side of the human-machine interface 9, and the telescopic push rod 13 slides in the track to achieve telescopic movement; the lower part of the track is the baffle storage space 12.

[0043] In one embodiment of the concrete structure waterjet cutting device of this utility model, the telescopic push rod 13 is connected to the controller to realize the automatic retraction of the telescopic push rod 13 and the baffle 14.

[0044] Specifically, the water jet pressure automatic control device of this utility model includes: a pressure sensor, an accumulator, a pressure control valve, a safety valve, etc., and the main solutions are as follows:

[0045] 1. A first and second pressure sensor installed at the high-pressure nozzle 6 and a second pressure sensor installed at the accumulator 2

[0046] Working principle: The pressure sensor is one of the key components of a water jet pressure control device. It can sense the pressure of the water jet in real time and convert the pressure signal into an electrical signal. For example, in a strain gauge pressure sensor, the resistance of the strain gauge changes when pressure is applied. This change in resistance is converted into a voltage signal output through a Wheatstone bridge circuit. This electrical signal can be received and processed by the subsequent controller.

[0047] Accuracy Requirements: Accuracy is crucial for precise pressure control. High-precision pressure sensors provide more accurate pressure feedback; generally, in waterjet cutting applications, the accuracy of pressure sensors can reach ±0.5% or even higher. This facilitates fine-tuning of pressure and ensures stable cutting quality.

[0048] 2. A proportional pressure control valve installed at the high-pressure nozzle 6

[0049] Operating principle: The proportional pressure control valve can adjust the pressure of the water jet based on the input electrical signal. It regulates the pressure by changing the position of the valve core to control the cross-sectional area of ​​the fluid passage. For example, when the controller receives a pressure signal from the pressure sensor and detects that the pressure is lower than the set value, it sends a signal to the proportional pressure control valve, causing the valve core to move, increasing the fluid passage and raising the water jet pressure; conversely, if the pressure is too high, it reduces the passage cross-sectional area to lower the pressure.

[0050] Response speed: Response speed is crucial for rapid pressure adjustment. Fast-response proportional pressure control valves can react to pressure changes in a short time, typically tens of milliseconds or even less. This effectively prevents a decrease in cutting quality caused by pressure fluctuations.

[0051] 3. Controller (PLC or CNC system)

[0052] Control Logic: The controller is the core of the entire pressure control device. It receives pressure signals from the first and second pressure sensors, and then sends control commands to the proportional pressure control valve based on the preset pressure value and control algorithm. For example, a controller using a PID (proportional-integral-derivative) control algorithm can calculate the control quantity based on the proportional, integral, and derivative terms of the pressure deviation, enabling the pressure to quickly and stably reach the set value.

[0053] Parameter settings: Pressure parameters can be easily set via the controller's human-machine interface. Operators can input appropriate pressure settings based on different cutting materials and thicknesses. Simultaneously, the controller can store various cutting process parameters for quick recall in different cutting tasks.

[0054] 4. Accumulator

[0055] Pressure buffering function: The accumulator plays a role in buffering pressure fluctuations in water jet pressure control. When the water jet pressure drops suddenly, the accumulator can release stored energy to replenish the pressure; when the pressure is too high, it can absorb excess energy. For example, during water jet cutting, when the cutting head suddenly accelerates or changes its cutting direction, causing water flow pressure fluctuations, the accumulator can keep the pressure relatively stable, like a "pressure reservoir".

[0056] Energy storage principle: Energy accumulators typically utilize the compressibility of gases (such as nitrogen) to store energy. When the water jet pressure increases, the liquid compresses the gas in the accumulator, storing energy; when the pressure decreases, the gas expands, releasing the stored energy back into the liquid, maintaining pressure balance.

[0057] 5. Safety valve

[0058] Safety protection function: The safety valve is an important safety device. When the water jet pressure control device malfunctions, such as the proportional pressure control valve failing and causing excessive pressure, the safety valve will automatically open to discharge some water from the system, preventing excessive pressure from causing damage to equipment and personnel.

[0059] Opening pressure setting: The opening pressure of a safety valve is generally set based on the maximum pressure that the equipment can withstand. For example, for a waterjet cutting device with a maximum working pressure of 400MPa, the opening pressure of the safety valve may be set to around 420MPa, leaving a certain safety margin to ensure timely action in case of abnormal pressure increases.

[0060] The main features of this device are:

[0061] 1. Real-time sensing of the water jet pressure and conversion of the pressure signal into an electrical signal; when subjected to pressure, the resistance of the strain gauge changes, and this resistance change is converted into a voltage signal output through a Wheatstone bridge circuit. This electrical signal can be received and processed by the subsequent controller.

[0062] 2. Pressure parameters can be easily set via the controller's human-machine interface. Operators can input appropriate pressure settings based on different cutting materials and thicknesses. Simultaneously, the controller can store various cutting process parameters for quick recall in different cutting tasks.

[0063] 3. The accumulator plays a role in buffering pressure fluctuations in water jet pressure control. When the water jet pressure drops instantaneously, the accumulator can release the stored energy to replenish the pressure.

[0064] 4. When the water jet pressure control device malfunctions, such as the proportional pressure control valve failing and causing excessive pressure, the safety valve will automatically open to discharge some water from the system to prevent excessive pressure from causing damage to equipment and personnel.

[0065] In one embodiment, such as Figure 4 As shown, the steps for using this device are as follows:

[0066] S1. On the human-machine interface, input the appropriate pressure setting value according to different cutting materials and thickness requirements. Simultaneously, the controller can store various cutting process parameters for quick recall in different cutting tasks.

[0067] S2. The pressure sensor detects the pressure of the water jet in real time. This resistance change is converted into a voltage signal by a Wheatstone bridge circuit, which is then received and processed by the subsequent controller. The pressure sensor has an accuracy of ±0.5% to enable fine-tuning of the pressure and ensure stable cutting quality.

[0068] S3, the PLC controller receives the pressure signal fed back by the pressure sensor, and then sends control commands to the proportional pressure control valve according to the preset pressure value and control algorithm;

[0069] S4. The accumulator utilizes the compressibility of gases such as nitrogen to store energy. When the water jet pressure increases, the liquid compresses the gas in the accumulator, storing energy; when the pressure decreases, the gas expands, releasing the stored energy back into the liquid, maintaining relatively stable pressure during the cutting process.

[0070] S5. When the water jet pressure control device malfunctions, such as the proportional pressure control valve failing and causing excessive pressure, the safety valve will automatically open to discharge some water from the system to prevent excessive pressure from causing damage to equipment and personnel.

[0071] S6. After the cutting operation is completed, the equipment will automatically shut down, return to the safe standby state, and issue a prompt sound.

[0072] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0073] Obviously, those skilled in the art can make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Therefore, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model also intends to include these modifications and variations.

Claims

1. A concrete structure water jet cutting apparatus, characterized by, The cutting system comprises: a high-pressure nozzle, to which a first pressure sensor, a proportional pressure control valve and a safety valve are connected; an accumulator connected to the high-pressure nozzle through a pipeline, to which a second pressure sensor is connected; a booster pump connected to the accumulator, to which a water inlet is arranged; a human-computer interaction interface, on which a control button is arranged; a controller connected to the first pressure sensor, the proportional pressure control valve, the safety valve, the accumulator, the booster pump and the human-computer interaction interface respectively.

2. The concrete structure water jet cutting apparatus of claim 1, wherein, Further comprising a multi-axis mechanical arm connected to the high-pressure nozzle, the multi-axis mechanical arm being connected to the controller.

3. The apparatus of claim 1, wherein the water jet cutting device is configured to cut the concrete structure in a manner that is substantially invisible to the naked eye. Further comprising: a mobile chassis, on which the cutting system is arranged.

4. The apparatus of claim 1, wherein, Further comprising a cabinet, on which a cabinet maintenance door is arranged, and in which the controller and the human-computer interaction interface are arranged.

5. The apparatus of claim 3, wherein the water jet cutting device is configured to cut the concrete structure in a manner that is substantially invisible to the naked eye. One side of the high-pressure nozzle is further provided with a baffle.

6. The apparatus of claim 5, wherein the water jet is directed at the concrete structure at an angle of about 45 degrees. Further comprising a retractable push rod connected to the baffle.

7. The apparatus of claim 6, wherein the water jet is directed at the concrete structure at an angle of about 45 degrees. The mobile chassis is further provided with a baffle storage space for storing the retracted retractable push rod and the baffle.

8. The apparatus of claim 6, wherein the water jet cutting device is configured to cut the concrete structure in a manner that is substantially invisible to the naked eye. The upper part of one side of the human-computer interaction interface is connected with a track, and the retractable push rod slides in the track; the lower part of the track is the baffle storage space.

9. The apparatus of claim 6, wherein the water jet cutting device is configured to cut the concrete structure in a manner that is substantially invisible to the naked eye. The retractable push rod is connected to the controller.

10. The apparatus of claim 1, wherein, The controller is a PLC controller or a numerical control system.

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