Automatic leveling device for jacking imbalance of double jacks

Abstract

The invention relates to an automatic leveling device for jacking imbalance of double jacks, comprising a real-time monitoring system which comprises an inclination sensor and a displacement sensor which are arranged at two ends or key positions of a beam body and is used for monitoring the horizontal state of the beam body and the displacement difference of the double jacks in real time; the automatic adjusting system comprises a hydraulic jack, an intelligent control valve and a servo system and can adjust the lifting speed and pressure of the jack according to a control instruction; the feedback control system comprises a closed-loop control module and a control unit based on a PID (Proportion Integration Differentiation) algorithm, and is used for receiving sensor data and calculating and outputting an adjusting instruction in real time; and the redundancy design module comprises multiple sensors and a control redundancy structure, and ensures that the basic leveling function is still kept when a single point of fault occurs.

Description

Technical Field

[0001] The present invention relates to the technical field of jack leveling, and particularly to an automatic leveling device for solving the problem of unbalanced lifting of double jacks. Background Art

[0002] In engineering fields such as bridge jacking and large equipment installation, the synchronous jacking technology of double jacks is widely used. In the prior art, the double jack jacking system usually adopts manual adjustment. Construction workers observe the readings of the level and manually replace the pads to achieve the leveling of the beam body. However, manual adjustment depends on the experience judgment of construction workers, and the errors of the beam body levelness and tilt angle are usually very large, which easily leads to structural stress concentration and affects the engineering quality. In addition, manual operation has a response lag, and it cannot be adjusted in time when sudden load changes or geological settlement occurs, and it is easy to occur beam body tilting accidents caused by unbalanced jacking. At the same time, the jack overload protection mechanism is missing, and there is no automatic protection measure when operating overloaded.

[0003] Chinese Patent Application Publication No. CN222434044U discloses an automatic synchronous lifting device, which aims at the problem that when two electric cylinders are used for lifting control in an existing large lifting mechanism, there may be differences in synchronism, resulting in jamming or offset during the rising process, and at the same time the cost is relatively high. By using one motor to drive two jacks to act simultaneously, the synchronous action of the two jacks is realized. However, it does not fully consider how to achieve the leveling of the two jacks.

[0004] In summary, there is currently a lack of an automatic leveling device for solving the unbalanced lifting of double jacks to solve or partially solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned defects existing in the prior art and provide an automatic leveling device for solving the unbalanced lifting of double jacks to solve or partially solve the problem of unbalanced co-lifting of two jacks.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] The present invention provides an automatic leveling device for solving the unbalanced lifting of double jacks, including:

[0008] A real-time monitoring system, including tilt sensors and displacement sensors arranged at both ends or key positions of the beam body, for real-time monitoring of the horizontal state of the beam body and the displacement difference of the double jacks;

[0009] An automatic adjustment system, including hydraulic jacks, intelligent control valves and servo systems, which can adjust the lifting speed and pressure of the jacks according to control instructions;

[0010] The feedback control system includes a closed-loop control module and a control unit based on the PID algorithm, which is used to receive sensor data and calculate and output adjustment instructions in real time;

[0011] The redundancy design module includes multiple sensors and a control redundancy structure to ensure the basic leveling function is maintained even in case of a single-point failure.

[0012] As a preferred technical solution, the tilt sensor and the displacement sensor are arranged in a distributed manner, covering at least both sides and the middle area of the beam body.

[0013] As a preferred technical solution, the hydraulic system adopts a dual-loop independent control structure, and each jack corresponds to an independent intelligent control valve and a servo drive unit.

[0014] As a preferred technical solution, the control algorithm includes an adaptive parameter adjustment module, which can dynamically optimize the PID control parameters according to the construction conditions.

[0015] As a preferred technical solution, the redundancy design module includes a master-slave sensor switching mechanism and a fault diagnosis module, which can achieve seamless switching when the sensor fails.

[0016] As a preferred technical solution, the system further includes a human-machine interface, which can display the beam body attitude data, the working status of the jacks, and the fault alarm information in real time.

[0017] As a preferred technical solution, the displacement sensor adopts a laser rangefinder or a magnetostrictive high-precision displacement gauge, and the measurement accuracy is better than 0.1 mm.

[0018] As a preferred technical solution, the tilt sensor adopts a two-axis inclinometer sensor, the measurement accuracy is better than 0.01°, and the response frequency ≥ 100 Hz.

[0019] As a preferred technical solution, the intelligent control valve adopts a proportional servo valve, the flow control accuracy is ±1%, and the response time ≤ 10 ms.

[0020] As a preferred technical solution, the system has an overload protection function, and when it is detected that the load of a single jack exceeds 110% of the rated value, the safety lock is automatically triggered.

[0021] Compared with the prior art, the present invention has at least one of the following beneficial effects:

[0022] (1) Improvement of construction accuracy: The present invention uses distributed high-precision sensors to monitor the tilt angle and displacement of the beam body in real time, combines the PID algorithm to dynamically adjust the stroke of the double jacks, eliminates the errors of traditional manual leveling, can control the horizontal deviation of the beam body, and the dual-loop independent hydraulic control system realizes the precise matching of the pressure and speed of the jacks, effectively avoiding structural stress concentration.

[0023] (2) Reduce safety risks: The overload protection function and multiple redundant designs significantly enhance the system reliability, reduce safety accidents caused by single-point failures, and the real-time dynamic compensation mechanism can quickly respond to sudden tilts, avoiding construction risks caused by lagging manual intervention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of an automatic leveling device for unbalanced jacking of double jacks in an embodiment;

[0025] Figure 2 It is a schematic diagram of the leveling process of the automatic leveling device in an embodiment,

[0026] Among them, 1. Jack, 2. Inclination sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] In view of the problems existing in the foregoing prior art, this embodiment provides an automatic leveling device for unbalanced jacking of double jacks, including:

[0029] (1) Real-time monitoring system: Install high-precision tilt sensors and displacement sensors at both ends or key positions of the beam body to real-time monitor the horizontal state of the beam body and the displacement difference between the two jacks.

[0030] Arrange high-precision tilt sensors and displacement sensors on both sides and in the middle of the beam body, and these sensors can accurately detect the tilt angle and horizontal position of the beam body.

[0031] (2) Automatic adjustment system: According to the feedback information of the sensors, automatically adjust the lifting speed or pressure of the jacks to ensure that the forces and strokes of the two jacks are synchronized, thereby maintaining the horizontal state of the beam body.

[0032] On the basis of traditional hydraulic jacks, add intelligent control valves and servo systems, which can accurately adjust the lifting speed and pressure of the jacks according to the instructions of the control system.

[0033] (3) Feedback control system: Introduce a closed-loop control system, input the data of the tilt sensors and displacement sensors into the control system in real time, and the control system immediately adjusts the actions of the jacks after calculation to achieve the effect of automatic leveling.

[0034] Design an algorithm based on PID control that can dynamically adjust the actions of two jacks according to real-time tilt and displacement data to ensure that the beam body is always in a horizontal state.

[0035] To prevent single-point failures from affecting the leveling effect, multiple sensors and control redundancies can be set in the system to ensure that basic leveling functions can still be maintained when part of the sensors or control systems fail.

[0036] The automatic leveling device of this embodiment combines modern sensing technology and an intelligent control system, with high feasibility of implementation. The development of the hydraulic system and control algorithm is based on existing technologies and can be achieved through system integration. This device can not only improve the accuracy of jacking construction but also reduce the construction risks caused by the tilt of the beam body.

[0037] In summary, this device has the following characteristics:

[0038] Improve construction accuracy: Through the automatic leveling device, the stroke difference between the two jacks can be effectively eliminated, ensuring that the beam body always remains horizontal and reducing structural stress concentration.

[0039] Reduce human intervention: The automated leveling process reduces the dependence on construction workers (such as manually inserting and adding shims on-site), improving construction efficiency and safety.

[0040] Real-time response: The real-time feedback and adjustment of the sensors and control system can quickly respond to any tilt conditions that occur during the construction process, ensuring the smooth progress of the construction process.

[0041] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An automatic leveling device for unbalanced lifting of double jacks, characterized in that: include: A real-time monitoring system, including tilt sensors and displacement sensors arranged at both ends of the beam or at key positions, is used to monitor the horizontal state of the beam and the displacement difference of the double jacks in real time; Automatic adjustment system, including hydraulic jack, intelligent control valve and servo system, used to adjust the lifting speed and pressure of the jack according to the control instructions; Feedback control system, including closed-loop control module and PID-based control unit, for receiving sensor data and calculating output regulation instructions in real time; Redundant design modules, including sensor and control redundant structures, enable leveling in the event of a single point failure.

2. The automatic leveling device for unbalanced lifting of double jacks according to claim 1 is characterized in that: The tilt sensor and displacement sensor are arranged in a distributed manner, covering at least the two sides and the middle area of ​​the beam.

3. The automatic leveling device for unbalanced lifting of double jacks according to claim 1, characterized in that: The hydraulic system adopts a dual-circuit independent control structure, and each jack corresponds to an independent intelligent control valve and servo drive unit.

4. The automatic leveling device for unbalanced lifting of double jacks according to claim 1, characterized in that: The feedback control system includes an adaptive parameter adjustment module for dynamically optimizing PID control parameters according to construction conditions.

5. The automatic leveling device for unbalanced lifting of double jacks according to claim 1, characterized in that: The redundant design module includes a master-slave sensor switching module and a fault diagnosis module, which are used to achieve seamless switching when a sensor fails.

6. The automatic leveling device for unbalanced lifting of double jacks according to claim 1, characterized in that: The system also includes a human-computer interaction interface for real-time display of beam posture data, jack working status and fault alarm information.

7. The automatic leveling device for unbalanced lifting of double jacks according to claim 1, characterized in that: The displacement sensor is a laser distance measurement or magnetostrictive high-precision displacement meter.

8. The automatic leveling device for unbalanced lifting of double jacks according to claim 1, characterized in that: The tilt sensor is a dual-axis tilt sensor.

9. The automatic leveling device for unbalanced lifting of double jacks according to claim 1, characterized in that: The intelligent control valve is a proportional servo valve.

10. The automatic leveling device for unbalanced lifting of double jacks according to claim 1, characterized in that: The system has an overload protection function, which automatically triggers the safety lock when it detects that the load of a single jack exceeds 110% of the rated value.

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