Multi-specification gantry adapted split type intelligent hydraulic correction system

Abstract

This invention relates to the field of hydraulic calibration equipment technology, specifically to a split-type intelligent hydraulic calibration system adaptable to multiple gantry specifications. The system includes a hydraulic module, a power execution module, and an electrical control module. The power execution module is connected to the hydraulic module via a high-pressure pipeline. The electrical control module is integrated into the hydraulic module and equipped with a remote control device. The system is adapted to the lateral distance calibration of a full range of welded masts from 4 to 16 tons, with a calibration range of 1-20 mm. Compared with existing technologies, the technical solution provided by this invention adapts to the calibration needs of a full range of masts from 4 to 16 tons, with a calibration range of 1-20 mm. Calibration operations for masts of different tonnages and types can be completed without changing equipment, significantly improving the equipment's versatility and efficiency.

Description

Technical Field

[0001] This invention relates to the field of hydraulic calibration equipment technology, and more specifically to a split-type intelligent hydraulic calibration system adaptable to multiple gantry specifications. Background Technology

[0002] As the core load-bearing component of equipment such as forklifts and cranes, the dimensional accuracy of the mast after welding directly affects the operational stability and safety of the equipment.

[0003] Currently, most calibration equipment for gantry cranes of different tonnages is specialized, which has problems such as poor adaptability, non-adjustable calibration force, and cumbersome operation: small calibration equipment cannot meet the calibration needs of large tonnage gantry cranes of 10t or more, while large equipment is not compatible with small tonnage gantry cranes, which can easily lead to over-calibration or under-calibration. Summary of the Invention

[0004] The purpose of this invention is to solve the problem of poor adaptability of existing calibration equipment, and to provide a split-type intelligent hydraulic calibration system that is compatible with multiple specifications of gantry, so as to achieve efficient and accurate calibration of a full range of 4-16t gantry, and improve operational flexibility and safety.

[0005] To achieve the above objectives, the present invention provides a split-type intelligent hydraulic correction system adaptable to multiple specifications of gantry, including a hydraulic module, a power execution module, and an electrical control module. The power execution module is connected to the hydraulic module through a high-pressure pipeline, and the electrical control module is integrated into the hydraulic module and equipped with a remote control operation device. The system is adapted to the left and right distance correction of a full range of 4-16t welded rear gantry, with a correction range of 1-20mm.

[0006] Preferably, the power execution module is a split piston cylinder structure, equipped with four types of calibration fixtures: #1, #2, #3 and #4. The nominal force of the calibration fixtures #1 and #2 is 500KN, which is suitable for 4-8t gantry frames. The nominal force of the calibration fixtures #3 and #4 is 900KN, which is suitable for 10-16t gantry frames.

[0007] Preferably, the travel of the training tools described in #1 and #3 is 150mm and 180mm respectively, and the travel of the training tools described in #2 and #4 is 280mm and 360mm respectively.

[0008] Preferably, the cylinder diameter of the calibration fixtures #1 and #2 is 150mm and the rod diameter is 70mm, and the cylinder diameter of the calibration fixtures #3 and #4 is 180mm and the rod diameter is 90mm.

[0009] Preferably, the hydraulic cylinder is capable of withstanding a pressure of 45 MPa.

[0010] Preferably, the hydraulic module includes an internal gear pump, an electromagnetic relief valve, an electromagnetic directional valve, and a hydraulically controlled check valve, wherein the nominal pressure of the internal gear pump is 32 MPa.

[0011] Preferably, the electromagnetic overflow valve has a preset protection pressure of 28 MPa to achieve system overload protection.

[0012] Preferably, the electrical control module is powered by a three-phase 380V, 50HZ power supply.

[0013] Preferably, it also includes a cantilever intelligent lifter for lifting, moving and positioning the gantry, wherein the cantilever intelligent lifter has a lifting capacity of 145 kg and a maximum lifting speed of 16 m / min.

[0014] Preferably, the cantilever intelligent lifter is equipped with six working modes: manual, locking, floating, emergency stop, automatic floating, and virtual limit, and the operating speed and parameter settings can be adjusted via a handle.

[0015] Compared with the prior art, the technical solution provided by the present invention is fully adaptable to the calibration requirements of the entire series of 4-16t gantry frames, with a calibration range of 1-20mm. Calibration operations of different tonnages and different types of gantry frames can be completed without changing equipment, which greatly improves the versatility and efficiency of the equipment. Attached Figure Description

[0016] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0017] Figure 1 This is a schematic diagram of a split-type intelligent hydraulic correction system adapted to multiple gantry specifications provided by the present invention.

[0018] Figure 2 This is a schematic diagram of the electrical cabinet of a split-type intelligent hydraulic correction system that adapts to multiple gantry specifications, provided by the present invention.

[0019] Figure 3 This is a schematic diagram of the hydraulic station of a split-type intelligent hydraulic calibration system adapted to multiple gantry specifications provided by the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of a calibration fixture for a split-type intelligent hydraulic calibration system adapted to multiple gantry sizes provided by the present invention. Detailed Implementation

[0021] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0022] like Figure 1-4 As shown in the figure, as a specific embodiment of the split-type intelligent hydraulic correction system adapted to multiple specifications of gantry provided by the present invention, the hydraulic correction system includes a hydraulic module, a power execution module, an electrical control module, and a cantilever intelligent lifter. The power execution module and the hydraulic module are sealed and connected through a high-pressure pipeline. The electrical control module is integrated on the hydraulic module and is equipped with a remote control operation device.

[0023] The power execution module is a split-type piston cylinder structure, equipped with four types of calibration fixtures: #1, #2, #3, and #4. The fixtures are coaxially fixed to the end of the cylinder piston rod via flanges. Fixtures #1 and #2 have a nominal force of 500KN and are suitable for 4-8t masts. Specifically, fixture #1 is suitable for 4T standard inner masts, 4.5T standard inner masts, 5T level 3 inner masts, and 8T level 3 inner masts; fixture #2 is suitable for 4T standard outer masts, 4.5T standard outer masts, 5T standard inner masts, and 8T standard inner masts. Fixtures #3 and #4 have a nominal force of 900KN and are suitable for 10-16t masts. Specifically, fixture #3 is suitable for 10T standard inner masts, 10T level 3 inner masts, and 12T level 3 inner masts; fixture #4 is suitable for 10T standard outer masts. The equipment includes gantry masts, 12T three-stage intermediate gantry masts, 13.5T inner gantry masts, and 16T inner gantry masts. The strokes of calibration fixtures #1 and #3 are 150mm and 180mm respectively, while those of calibration fixtures #2 and #4 are 280mm and 360mm respectively. Calibration fixtures #1 and #2 correspond to hydraulic cylinder diameters of 150mm and rod diameters of 70mm, while calibration fixtures #3 and #4 correspond to hydraulic cylinder diameters of 180mm and rod diameters of 90mm. The equipment is compatible with the left-right distance correction of the entire series of welded gantry masts from 4 to 16t, with a correction range of 1-20mm. Through the differentiated design of the four specifications of calibration fixtures, the equipment can cover the correction needs of the entire series of gantry masts from 4 to 16t, with a correction range of 1-20mm. Calibration operations of different tonnages and types of gantry masts can be completed without changing the equipment, greatly improving the versatility and efficiency of the equipment.

[0024] The hydraulic cylinder adopts a piston structure, consisting of a cylinder body, piston, guide sleeve, seals and other parts. The outlet is a pipe thread. The piston and cylinder body can withstand a pressure of 45 MPa. As an optimal option, the piston is made of 2Cr13 stainless steel and the cylinder body is made of 42CrMo alloy structural steel. The combination of the two allows the cylinder body and piston to withstand a high pressure of 45 MPa, while also having excellent fatigue resistance and wear resistance.

[0025] The hydraulic module is a hydraulic power unit, integrating an internal gear pump, a solenoid relief valve, a solenoid directional valve, and a hydraulically controlled check valve. The internal gear pump is horizontally mounted on one side of the bottom of the hydraulic power unit's oil tank and coaxially connected to the drive motor inside the hydraulic power unit via a coupling. The outlet of the internal gear pump is connected to the input end of the solenoid directional valve via a pipeline. The solenoid directional valve is vertically fixed to the inside of the top of the oil tank, and its output ends are connected to the hydraulically controlled check valve and the solenoid relief valve respectively. The hydraulically controlled check valve is connected to the corresponding oil circuit interface of the hydraulic cylinder. The solenoid relief valve is connected in parallel to the main oil pipeline and is connected to the oil tank's return port. The nominal force of the internal gear pump is 32 MPa, and when the motor speed is 1500 r / min, the pump flow rate is 12 L / min, providing stable hydraulic power. The electromagnetic relief valve plays a safety protection role in the system, preventing overload. The preset protection pressure is 28 MPa, realizing system overload protection. The electromagnetic directional valve changes the direction of oil flow into the main cylinder through electrical control, so as to realize the cylinder ejection and return actions. The hydraulic control check valve ensures the cylinder pressure holding performance and avoids pressure loss during the calibration process, which affects accuracy. The hydraulic oil is selected according to the season. As a preferred option, YB-N32# anti-wear hydraulic oil is used as the working medium in winter and YB-N46# anti-wear hydraulic oil is used as the working medium in summer. The oil tank capacity is 80 liters, equipped with an air filter and oil level indicator to ensure oil cleanliness and oil level stability.

[0026] The electrical control module is integrated into the electrical cabinet at the top of the hydraulic station. The control motherboard is horizontally mounted in the middle of the inner side of the electrical cabinet, and the power module is installed on one side of the control motherboard. The grounding terminal is fixed in the bottom corner of the electrical cabinet. The solenoid valve controller is vertically mounted on one side of the electrical cabinet and is connected to the solenoid directional valve inside the hydraulic station via wires. It is powered by a three-phase 380V, 50HZ power supply and is equipped with a grounding copper busbar for main grounding protection. It also adopts the safety protection measures of the door-opening power-off system. The system control circuit is powered by a 220V power supply, and the actuator, i.e., the solenoid directional valve, is powered by a safe voltage 24V DC power supply. Both power supplies are powered by the control transformer TC and the bridge rectifier VC, using graded voltage power supply to balance control accuracy and safety. It is equipped with safety devices such as door-opening power-off and grounding protection. The remote control device adopts inching control and has independent control channels for calibration tools #1 and #2, which can remotely control the cylinder movement and improve the flexibility of operation.

[0027] The cantilever intelligent lifting device is bolted to a pre-set mounting base on one side of the hydraulic station. It has a lifting capacity of 145kg, a maximum lifting speed of 16m / min, a lifting height of 3000mm, and a cantilever slewing radius of 4500mm. It features six operating modes: manual, locking, floating, emergency stop, automatic floating, and virtual limit. The operating speed and parameter settings can be adjusted via a handle. The cantilever intelligent lifting device provides intelligent auxiliary handling functions, enabling precise lifting, movement, and positioning of the gantry. The virtual limit function allows setting upper and lower limits according to operational needs, while the automatic floating function automatically enters floating mode based on load weight and time conditions, improving handling efficiency and safety.

[0028] During operation, first assemble the equipment: fix the hydraulic station in the designated position, connect the power execution module to the hydraulic station through the high-pressure pipeline, ensure that the pipeline connection is firm and leak-free, fix the electrical cabinet on the upper part of the hydraulic station oil tank, connect the power line to form the electrical control module, ensure reliable grounding protection, pair the remote control transmitter and receiver successfully, install the cantilever intelligent lifter in a suitable position, and debug each action mode to ensure normal operation.

[0029] Test run preparation: Check that all operating parts are functioning normally, and inject the corresponding type of anti-wear hydraulic oil into the oil tank. The oil must not contain impurities such as asphalt, acid, and water. The oil level should be up to the red line position on the oil level indicator.

[0030] No-load test run: Connect the power supply, close the automatic switch, turn on the electric lock, press the "motor start" button to make the oil pump run under no-load, confirm that the pump rotation direction is correct, jog the remote control button, operate the hydraulic cylinders of each specification of calibration tool to reciprocate dozens of times, remove air from the pipeline, and check whether each action is smooth and without abnormal noise.

[0031] Load test: Securely connect the cylinder top block, and gradually increase the pressure from 6MPa, increasing by 2MPa each time, until the maximum working pressure of 28MPa is reached. During the process, check the pipeline joints and seals for oil leakage. If there is any leakage, stop the machine immediately and troubleshoot the problem. After the problem is eliminated, continue the test run.

[0032] Calibration operation: Select the corresponding calibration fixture according to the tonnage and type of the gantry. Use the cantilever intelligent lifter to move the gantry to be calibrated to the designated position, adjust the gantry posture to the calibration benchmark, operate the remote control to start the corresponding calibration fixture cylinder, slowly push it out to the position of the gantry to be calibrated, maintain pressure, and complete the left and right distance calibration of the gantry. After the calibration is completed, operate the cylinder to return, and use the cantilever intelligent lifter to move the calibrated gantry to the next process.

[0033] Maintenance: Change the oil for the first time after three months of normal operation, and then change the oil every six months thereafter. When the equipment is to be shut down for an extended period of time, wipe all machined surfaces and apply anti-rust oil. When the pressure is stable during operation, turn off the pressure gauge to extend its service life. Regularly inspect the electrical wiring, hydraulic lines and seals, and replace any damaged parts in a timely manner.

[0034] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A split-type intelligent hydraulic correction system adaptable to multiple gantry specifications, characterized in that: It includes a hydraulic module, a power execution module, and an electrical control module. The power execution module is connected to the hydraulic module via a high-pressure pipeline. The electrical control module is integrated into the hydraulic module and is equipped with a remote control operating device. It is compatible with the left and right distance correction of the entire series of 4-16t welded rear masts, with a correction range of 1-20mm.

2. The split-type intelligent hydraulic correction system adaptable to multiple gantry specifications according to claim 1, characterized in that: The power execution module is a split piston cylinder structure, equipped with four types of calibration fixtures: #1, #2, #3 and #4. The nominal force of the calibration fixtures #1 and #2 is 500KN, which is suitable for 4-8t gantry frames. The nominal force of the calibration fixtures #3 and #4 is 900KN, which is suitable for 10-16t gantry frames.

3. The split-type intelligent hydraulic correction system adaptable to multiple gantry specifications according to claim 2, characterized in that: The travel of the training tools described in #1 and #3 is 150mm and 180mm respectively, and the travel of the training tools described in #2 and #4 is 280mm and 360mm respectively.

4. The split-type intelligent hydraulic correction system adaptable to multiple gantry specifications according to claim 3, characterized in that: The hydraulic cylinders of the calibration fixtures #1 and #2 have a diameter of 150mm and a rod diameter of 70mm, while the hydraulic cylinders of the calibration fixtures #3 and #4 have a diameter of 180mm and a rod diameter of 90mm.

5. The split-type intelligent hydraulic correction system adaptable to multiple gantry specifications according to claim 2, characterized in that: The hydraulic cylinder can withstand a pressure of 45 MPa.

6. The split-type intelligent hydraulic correction system adaptable to multiple gantry specifications according to claim 1, characterized in that: The hydraulic module includes an internal gear pump, an electromagnetic relief valve, an electromagnetic directional valve, and a hydraulically controlled check valve. The nominal pressure of the internal gear pump is 32 MPa.

7. The split-type intelligent hydraulic correction system adaptable to multi-specification gantry as described in claim 6, characterized in that: The electromagnetic overflow valve has a preset protection pressure of 28 MPa to achieve system overload protection.

8. The split-type intelligent hydraulic correction system adaptable to multiple gantry specifications according to claim 1, characterized in that: The electrical control module is powered by a three-phase 380V, 50HZ power supply.

9. The split-type intelligent hydraulic correction system adaptable to multi-specification gantry according to any one of claims 1-8, characterized in that: It also includes a cantilever intelligent lifter for lifting, moving and positioning the gantry, the cantilever intelligent lifter having a lifting capacity of 145 kg and a maximum lifting speed of 16 m / min.

10. The split-type intelligent hydraulic correction system adaptable to multiple gantry specifications according to claim 9, characterized in that: The cantilever intelligent lifter is equipped with six working modes: manual, locking, floating, emergency stop, automatic floating, and virtual limit. The operating speed and parameter settings can be adjusted via a handle.

Images