On-line monitoring device for stress of hanger bolt

Abstract

A hanger bolt stress on-line monitoring device comprises a hanger, the hanger is provided with a lifting lug and a plurality of bolt structures, the top of each bolt structure is provided with a magnetic probe, the magnetic probes are connected with a processing device through data lines, and the processing device is arranged on the hanger. And a processing module, an analysis module, a data acquisition module and a signal module are arranged in the processing device. By the adoption of the structure, the stress condition of each bolt can be visually displayed in the dismounting stage, whether hoisting is normal or not can be rapidly judged according to the stress value, and the direction and size of abnormality can be rapidly judged if the abnormality exists; in the reinstallation leveling stage, the horizontal adjustment amount is judged by measuring the stress condition of each lifting appliance bolt, so that the number of times of trial lifting can be effectively reduced, an effective and reliable guidance basis is provided for lifting operation, and the safety of the operation process is ensured; the device is simple and practical in overall structure, accurate and stable in real-time monitoring, capable of reducing operation risks and capable of improving operation efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of hydropower equipment hoisting, in particular to an online monitoring device for the force of a hanger bolt. Background Art

[0002] The overhaul of large hydro-turbine generator sets involves the lifting and hoisting of overweight equipment. For example, the rotor of a hydropower plant generator weighs 2,000 tons, and the runner, main shaft and other equipment components also weigh 300 tons to 500 tons. During the overhaul process, special hoists are required to lift in and out the corresponding equipment. At present, there is a lack of accurate judgment on the stress conditions of the equipment during the lifting process. For example, during the disassembly and lifting stage, the measured value of the crane weighing device can only be compared with the deadweight of the equipment through a trial lifting method as a reference for whether the lifting can continue. Due to the large error of the crane's own weighing device, the guiding role is limited. When the lifting parts are abnormally stuck, the direction and size of the stuck part cannot be accurately judged, and the lifting can only be suspended for inspection. For example, during the reinstallation stage, the level of the hoisted equipment needs to be adjusted. The current common method is to repeatedly test lift and measure and adjust with a level ruler multiple times, which is cumbersome and has limited guiding role in the lifting operation. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide an online monitoring device for the force on the hanger bolts, which can monitor the force value of each hanger bolt during the lifting operation in real time, and can intuitively display the force condition of each bolt in the disassembly stage. It can quickly judge whether the lifting is normal through the force value, and can quickly judge the direction and size of the abnormality if there is any abnormality; in the reinstallation and leveling stage, the horizontal adjustment amount can be judged by measuring the force condition of each hanger bolt, which can effectively reduce the number of trial liftings, provide effective and reliable guidance basis for the lifting operation, and ensure the safety of the operation process; the overall structure of the device is simple and practical, and the real-time monitoring is accurate and stable, which reduces the operation risk and improves the operation efficiency.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: an online monitoring device for the force of a hanger bolt, including a hanger, wherein the hanger is provided with a lifting lug and a plurality of bolt structures, a magnetic probe is provided on the top of the bolt structure, and the magnetic probe is connected to a processing device through a data cable. The processing device is arranged on the hanger, and a processing module, an analysis module, a data acquisition module and a signal module are arranged in the processing device.

[0005] In a preferred solution, the magnetic suction probe comprises a magnetic suction sleeve, on which an ultrasonic sensor is provided.

[0006] In a preferred solution, the processing device is provided with a power supply structure.

[0007] In a preferred solution, the signal module includes a signal receiving module and a signal transmitting module which are arranged on the processing device.

[0008] In a preferred solution, the processing device cooperates with a mobile display terminal.

[0009] In a preferred solution, the mobile display terminal is provided with a touch screen structure, a wireless receiving module, operation buttons, a power supply and supporting operation software.

[0010] The utility model provides an online monitoring device for the force of hanger bolts, which has the following beneficial effects by adopting the above structure:

[0011] (1) It can monitor the stress value of each hanger bolt in real time during the lifting operation. During the disassembly stage, it can visually display the stress condition of each bolt. Through the stress value, it can quickly determine whether the lifting is normal. If there is any abnormality, the direction and size of the abnormality can be quickly determined;

[0012] (2) During the reinstallation and leveling stage, the horizontal adjustment amount can be determined by measuring the stress of each hanger bolt, which can effectively reduce the number of trial lifts, provide effective and reliable guidance for the lifting operation, and ensure the safety of the operation process;

[0013] (3) The overall structure of the device is simple and practical, and real-time monitoring is accurate and stable, which reduces operational risks and improves operational efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 This is a schematic diagram of the bolt and magnetic suction probe structure of the utility model.

[0017] In the figure: a sling 1, a lifting ear 2, a bolt structure 3, a magnetic suction sleeve 4, an ultrasonic sensor 5, a data line 6, a processing device 7, a power supply structure 8, a signal receiving module 9, and a signal transmitting module 10. DETAILED DESCRIPTION

[0018] like Figure 1-2 In the invention, an online monitoring device for the force of hanger bolts is provided, comprising a hanger 1, wherein the hanger 1 is provided with a lifting lug 2 and a plurality of bolt structures 3, a magnetic probe is provided on the top of the bolt structure 3, the magnetic probe is connected to a processing device 7 via a data line 6, the processing device 7 is arranged on the hanger 1, and a processing module, an analysis module, a data acquisition module and a signal module are provided in the processing device 7.

[0019] In a preferred solution, the magnetic suction probe comprises a magnetic suction sleeve 4, on which an ultrasonic sensor 5 is disposed. The ultrasonic sensor 5 is magnetically fixed to the top surface of the bolt structure 3, and the measurement data is accurate and stable.

[0020] In a preferred solution, the processing device 7 is provided with a power supply structure 8. The power supply structure 8 can be used to monitor the stress of the bolt structure 3 in coordination with the lifting operation.

[0021] In a preferred solution, the signal module includes a signal receiving module 9 and a signal transmitting module 10 arranged on the processing device 7. Monitoring is implemented, signal data is transmitted stably, and data is analyzed to control the situation.

[0022] In a preferred solution, the processing device 7 cooperates with a mobile display terminal. The mobile display terminal is easy to operate and can be flexibly controlled with hoisting and personnel movement.

[0023] In a preferred solution, the mobile display terminal is provided with a touch screen structure, a wireless receiving module, operation buttons, a power supply and matching operation software, which is convenient to operate, flexible and practical.

[0024] The method of using the utility model is as follows: relying on the ultrasonic sensor 5 to output ultrasonic waves, by detecting the difference between the ultrasonic return signal and the transmitted signal, the values ​​of the bolt structure 3 in the untightened state and the tightened stress state are calculated, thereby obtaining the stress value of the bolt structure 3 in the tightened state.

[0025] The beneficial effects of the utility model: the stress value of each hanger bolt during the lifting operation can be monitored in real time, the stress condition of each bolt can be intuitively displayed in the disassembly stage, and whether the lifting is normal can be quickly judged by the stress value. If there is an abnormality, the direction and size of the abnormality can be quickly judged; in the reinstallation and leveling stage, the horizontal adjustment amount can be judged by measuring the stress condition of each hanger bolt, which can effectively reduce the number of trial lifts, provide effective and reliable guidance for the lifting operation, and ensure the safety of the operation process; the overall structure of the device is simple and practical, and the real-time monitoring is accurate and stable, which reduces the operation risk and improves the operating efficiency.

Claims

1. A device for online monitoring the force of a hanger bolt, comprising a hanger (1), characterized in that: The sling (1) is provided with a lifting lug (2) and a plurality of bolt structures (3). A magnetic probe is provided on the top of the bolt structure (3). The magnetic probe is connected to a processing device (7) via a data line (6). The processing device (7) is arranged on the sling (1). A processing module, an analysis module, a data acquisition module and a signal module are provided in the processing device (7).

2. The hanger bolt force online monitoring device according to claim 1, characterized in that: The magnetic suction probe comprises a magnetic suction sleeve (4), on which an ultrasonic sensor (5) is arranged.

3. The device for online monitoring the force of hanger bolts according to claim 1, characterized in that: The processing device (7) is provided with a power supply structure (8).

4. The hanger bolt force online monitoring device according to claim 1, characterized in that: The signal module comprises a signal receiving module (9) and a signal transmitting module (10) which are arranged on the processing device (7).

5. The hanger bolt force online monitoring device according to claim 1, characterized in that: The processing device (7) cooperates with the mobile display terminal.

6. The device for online monitoring the force of hanger bolts according to claim 5, characterized in that: The mobile display terminal is provided with a touch screen structure, a wireless receiving module, operation buttons, a power supply and matching operation software.

Images