JP5877959B2 - Method for diagnosing state of mounting of bogie frame of superconducting magnet device and bogie assembly thereof - Google Patents

Description

  The present invention relates to a method for diagnosing a state in which a bogie frame is attached to a superconducting magnet device and a bogie assembly.

  FIG. 5 is a view showing a cart assembly on which a conventional superconducting magnet device is mounted (see Non-Patent Document 1 below).

  In this figure, superconducting magnet devices (SCM) 101 and 102 are arranged on both sides of the carriage, and side beams 103 and 104 of the carriage frame are arranged inside the SCMs 101 and 102, and the side beams 103 and 104 of those carriage frames are arranged. A horizontal beam 105 of the bogie frame is arranged between the SCMs 101 and 102, and the side beams 103 and 104 of the bogie frame are fixed by mounting bolts 106 and 107 of the SCM 101 and 102. Yes.

  As described above, the superconducting magnet device is a component of the carriage by being attached to both sides of the carriage frame as a pair. The attachment method is fastening with bolts. For this reason, conventionally, the management of the mounting state of the bogie frame of the superconducting magnet device has been carried out by defining the fastening torque value.

  In addition, as shown in FIG. 5, other apparatuses are mounted on the cart. For example, the anchor device 108, the emergency landing device 109, the guide leg fairing 110, the carriage upper fairing 111, the support leg device 112, the liquid helium reservoir, the liquid nitrogen reservoir 113, the helium refrigerator 114, and the helium onboard refrigeration system compressor unit 115. The left and right auxiliary springs 116 for the head carriage, the hydraulic power unit 117, the guide leg device 118, the guide stopper wheel device 119, the vehicle body support air spring 120, the vehicle frame built-in type oil tank 121, the vehicle body support vertical motion damper 122, and the vehicle fire detection sensor 123. Has been implemented.

JP 2010-258278 A

Railway Research Institute Report Vol. 10, no. 1, 1996.1, pp. 11-16

  However, after the superconducting magnet device is fastened to the carriage frame at the specified torque value, there is no confirmation that the carriage frame mounting state of the superconducting magnet device is properly maintained if vibrations associated with operation are applied.

  By the way, the present inventor has proposed an inspection / diagnosis method and apparatus for a load support material of a superconducting magnet device (see Patent Document 1).

  FIG. 6 is a schematic diagram of a load support material inspection / diagnosis device proposed in Patent Document 1 described above.

  In this figure, 201 is a superconducting coil, 202 is an inner tank container, 203 is a load support material, 204 is a shield plate, 205 is an outer tank container, 206 is a vibration sensor, 207 is a carriage frame, 208 is an input of a structural mechanics analysis model. Data 209 is a measurement control device.

  Then, as shown in FIG. 6, the measured amplitude of the outer tank container 205 in the vicinity of the load support material 203 is obtained by the vibration sensor 206 arranged on the outer surface of the outer tank container 205 in the vicinity of the load support material 203. A method and apparatus for inspecting and diagnosing a load support material of a superconducting magnet apparatus for inspecting and diagnosing the presence and extent of a deteriorated load support material 203 by comparing the estimated and measured amplitude of the outer tank container 205 have been proposed.

  However, the above-described method and apparatus for inspecting and diagnosing a load support material of a superconducting magnet device have not been able to provide a sufficient diagnostic function for the mounting state of the carriage frame of the superconducting magnet device.

  In view of the above situation, an object of the present invention is to provide a method for diagnosing a mounting state of a superconducting magnet device on a bogie frame, and a method for diagnosing the mounting state of the superconducting magnet device on a bogie frame. And

In order to achieve the above object, the present invention provides
[1] In the method for diagnosing the mounting state of the superconducting magnet device on the carriage frame, (a) the superconducting magnet devices are arranged in pairs, and the side beams of the cart frame are arranged inside the superconducting magnet devices arranged in pairs. A horizontal beam of the bogie frame is disposed between the side beams of the bogie frame, and the superconducting magnet device is fastened and attached to the side beam of the bogie frame by a mounting bolt, and a vibration sensor is provided near the end of the mounting bolt. Preparing an attached cart assembly; (b) grasping vibration characteristics of the cart assembly when the mounting bolt is fastened at a specified torque value by measuring an output of the vibration sensor; Grasping the vibration characteristics of the bogie assembly when the fastening torque value of the mounting bolt changes from the specified torque value; (d) grasping the vibration characteristics of the bogie assembly after operation; Vibration obtained in (c) By comparing the gender, by estimating the effective value of the tightening torque of the mounting bolts after the operation, by the estimated effective value, and wherein the diagnosing bogie frame mounted state of the superconducting magnet apparatus .

[2] The diagnostic method of the bogie frame mounting state of the above-mentioned [1] Symbol mounting of the superconducting magnet apparatus, when the estimated actual value of the tightening torque of the mounting bolts is different from the specified torque value, the mounting bolts to the specified torque value When the vibration characteristic of the cart assembly is restored to the value at the specified torque value by re-fastening, it is diagnosed that the cart frame mounting state of the superconducting magnet device is properly restored.

[3] The diagnostic method of the bogie frame mounting state of the above-mentioned [1] Symbol mounting of the superconducting magnet apparatus, when the estimated actual value of the tightening torque of the mounting bolts is different from the specified torque value, the mounting bolts to the specified torque value When the vibration characteristics of the bogie assembly do not recover to the value at the specified torque value even after re-fastening, the diagnosis is made as an abnormal state in which a structural change other than fastening of the mounting bolt occurs. It is characterized by.

[ 4 ] In the carriage assembly for diagnosing the carriage frame mounting state of the superconducting magnet device, a superconducting magnet device arranged in a pair, and a carriage frame arranged inside the superconducting magnet device arranged in this pair; A mounting bolt for fastening the superconducting magnet device to the bogie frame; a vibration sensor mounted near the end of the mounting bolt; and a vibration measuring device for measuring the output of the vibration sensor. By grasping the vibration characteristics of the cart assembly, the effective value of the fastening torque of the mounting bolt after operation is estimated, and the cart frame mounting state of the superconducting magnet device is diagnosed based on the estimated effective value. It is characterized by.

[ 5 ] In the cart assembly for diagnosing the mounting state of the superconducting magnet device according to the above [ 4 ], the cart frame is disposed on the inside of the pair of superconducting magnet devices arranged on the side of the cart frame. It is characterized by comprising a beam and a lateral beam of the bogie frame arranged between the side beams of the bogie frame.

  ADVANTAGE OF THE INVENTION According to this invention, the bogie frame attachment state of a superconducting magnet apparatus can be measured accurately, and the bogie frame attachment state of a perfect superconducting magnet apparatus can be managed.

It is a schematic diagram of the trolley | bogie assembly which comprises the diagnosing function of the bogie frame attachment state which shows the Example of this invention. It is a figure which shows the vibration characteristic when a superconducting magnet apparatus is fastened and attached to the frame which simulated the bogie frame which shows the Example of this invention by a prescription | regulation torque value, and a fastening torque value falls. It is a diagnostic flowchart (the 1) of the bogie frame attachment state which shows the Example of this invention. It is a diagnostic flowchart (the 2) of the bogie frame attachment state which shows the Example of this invention. It is a figure which shows the trolley | bogie assembly in which the conventional superconducting magnet apparatus is mounted. It is a schematic diagram of the inspection / diagnosis device for the load support material of the superconducting magnet device proposed in Patent Document 1.

The method for diagnosing the mounting state of the superconducting magnet device on the bogie frame is as follows: (a) The superconducting magnet devices are arranged in pairs, and the side beams of the bogie frame are arranged inside the superconducting magnet devices arranged in pairs. A carriage in which a transverse beam of a carriage frame is arranged between side beams of the carriage frame, the superconducting magnet device is fastened and attached to a side beam of the carriage frame by a mounting bolt, and a vibration sensor is attached in the vicinity of the end of the mounting bolt. Preparing an assembly; (b) grasping vibration characteristics of the carriage assembly when the mounting bolt is fastened at a specified torque value by measuring an output of the vibration sensor ; The vibration characteristics of the cart assembly when the fastening torque value changes from the specified torque value are ascertained. (D) The vibration characteristics of the cart assembly after operation is ascertained. Compare with the vibration characteristics obtained in It allows to estimate the effective value of the tightening torque of the mounting bolts after the operation, by the estimated effective value, diagnosing bogie frame mounted state of the superconducting magnet apparatus.

  Hereinafter, embodiments of the present invention will be described in detail.

  FIG. 1 is a schematic diagram of a cart assembly having a function for diagnosing a carriage frame mounting state according to an embodiment of the present invention, and FIG. 2 shows a superconducting magnet device for a frame simulating the cart frame according to the embodiment of the present invention. It is a figure which shows the vibration characteristic when it fastens and attaches with a prescription | regulation torque value, and a fastening torque value falls.

  In these drawings, 1 and 2 are superconducting magnet devices arranged in pairs, 3 and 4 are side beams of a cart frame arranged inside the superconducting magnet devices 1 and 2, and 5 is a side beam of the cart frame. 3, 4 is a mounting beam to the side beam 3 of the bogie frame of the superconducting magnet device 2, and 6 is a mounting bolt to the side beam 4 of the bogie frame of the superconducting magnet device 2. Reference numeral 8 denotes a vibration sensor disposed near the end of the mounting bolt 6 (or the mounting bolt 7), and reference numeral 9 denotes a vibration measuring device that measures an output from the vibration sensor 8.

  First, as shown in FIG. 1, with respect to the bogie assembly assembled by superposing the superconducting magnet devices 1 and 2 and fastening them to the both sides of the bogie frames 3, 4 and 5 with the mounting bolts 6 and 7 at a specified torque value, Understand its vibration characteristics. Next, the vibration characteristics when the fastening torque value of the mounting bolts 6 and 7 changes from the specified torque value are grasped. Then, by grasping the vibration characteristics after operation and comparing with the two vibration characteristics obtained above, the effective value of the fastening torque of the mounting bolts 6 and 7 after operation is estimated, and the superconducting magnet device 1, 2. Diagnose the mounting state of the bogie frame.

  In the above, when the effective value of the estimated fastening torque of the mounting bolts 6 and 7 is different from the specified torque value, the value when the vibration characteristics are the specified torque value by re-fastening the mounting bolts 6 and 7 to the specified torque value. Is recovered, the state where the bogie frame mounting state of the superconducting magnet devices 1 and 2 has recovered has been recovered. On the other hand, even when the mounting bolts 6 and 7 are re-fastened to the specified torque value, the vibration characteristics are the specified torque value. If the value does not recover, a structural change other than fastening of the mounting bolts 6 and 7 (for example, a change in the internal structure of the superconducting magnet device) has occurred, and it is diagnosed as abnormal.

  If the effective value of the fastening torque of the mounting bolts 6 and 7 changes, the structure changes, so the vibration characteristics of the carriage assembly change. Therefore, it is possible to capture the change in the effective value of the fastening torque of the mounting bolts 6 and 7 by analyzing the vibration characteristics of the carriage assembly. The change in the effective value of the fastening torque of the mounting bolts 6 and 7 is mainly a decrease due to the looseness of the fastening of the mounting bolts 6 and 7 due to the vibration caused by the operation, and the rigidity of the cart assembly is reduced. The resonance frequency decreases.

  For example, as shown in FIG. 2, it can be confirmed that the resonance frequency decreases as the fastening torque value decreases.

  FIG. 3 is a diagnosis flowchart (part 1) of a state in which the carriage frame is attached according to the embodiment of the present invention, and FIG.

As shown in FIG. 3, first, as shown in FIG. 3, the superconducting magnet device is arranged so as to be paired with the inner bogie frame, and the superconducting magnet device is attached to the bogie frame with mounting bolts. Thus, a cart assembly is prepared by fastening and mounting, and mounting a vibration sensor near the end of the mounting bolt (step S1). Next, the vibration characteristic of the cart assembly when the mounting bolt is fastened with the specified torque value is grasped by measuring the output of the vibration sensor (step S2). Furthermore, the vibration characteristic of the cart assembly when the fastening torque value of the mounting bolt changes from the specified torque value is grasped (step S3). And the effective value of the fastening torque of the mounting bolt after operation is estimated by grasping the vibration characteristic of the cart assembly after operation and comparing it with the vibration property of step S2 and step S3 (step S4). After that, as shown in FIG. 4, it is checked whether or not the estimated effective value of the fastening torque is different from the specified torque value (step S11). If it is not different from the specified torque value (NO in step S11), it is determined that the carriage frame mounting state of the superconducting magnet device is normal (step S12). If it is different from the specified torque value (YES in step S11), The mounting bolt is re-fastened with the specified torque value, and it is checked whether or not the vibration characteristic has been restored to the value when the specified torque value is reached (step S13). When the value is restored to the value at the specified torque value (YES in Step S13), it is diagnosed that the mounting state of the superconducting magnet device is properly recovered (Step S14), but the mounting bolt is set to the specified torque value. If the vibration characteristic does not recover to the specified torque value even after re-engaging (NO in step S13), it is diagnosed that the mounting state of the superconducting magnet device is not properly recovered and A measure (disassembly inspection or replacement of parts accompanying it) is performed (step S15). If the vibration characteristics do not recover to the specified torque value even after the mounting bolt is re-fastened at the specified torque value, structural changes other than fastening of the mounting bolt (for example, the inside of the superconducting magnet device) It can be diagnosed that structural changes are occurring.

  In addition, this invention is not limited to the said Example, Based on the meaning of this invention, a various deformation | transformation is possible and these are not excluded from the scope of the present invention.

  A method for diagnosing the mounting state of a superconducting magnet device according to the present invention and a method for diagnosing the mounting state of a superconducting magnet device on a bogie frame, and a method for diagnosing the mounting state of a superconducting magnet device on a bogie frame, and a method It can be used as a cart assembly.

1, 2 Superconducting magnet device 3, 4 Side beam of bogie frame 5 Horizontal beam of bogie frame 6, 7 Mounting bolt 8 Vibration sensor 9 Vibration measuring device

Claims (5)

(A) Superconducting magnet devices are arranged in pairs, side beams of the bogie frame are arranged inside the superconducting magnet devices arranged in pairs, and the horizontal beams of the bogie frame are arranged between the side beams of the bogie frame. Arranging and attaching the superconducting magnet device to a side beam of the carriage frame by fastening a mounting bolt, and preparing a carriage assembly in which a vibration sensor is attached near the end of the mounting bolt;
(B) grasping vibration characteristics of the cart assembly when the mounting bolt is fastened at a specified torque value by measuring an output of the vibration sensor ;
(C) grasping the vibration characteristics of the cart assembly when the fastening torque value of the mounting bolt is different from the specified torque value;
(D) By grasping the vibration characteristics of the cart assembly after operation and comparing it with the vibration characteristics obtained in (b) and (c) above, the effective value of the fastening torque of the mounting bolt after operation And diagnosing the mounting state of the superconducting magnet device on the bogie frame according to the estimated effective value . In the diagnostic method of the bogie frame mounted state of the superconducting magnet apparatus according to claim 1 Symbol placement, the estimated effective value of the tightening torque of the mounting bolts in the case different from the specified torque value, re-entered into the mounting bolts specified torque value When the vibration characteristic of the bogie assembly is restored to the value at the specified torque value, the bogie frame mounting state of the superconducting magnet device is diagnosed as being properly restored, and the bogie frame of the superconducting magnet device is characterized in that Diagnosis method of mounting state. In the diagnostic method of the bogie frame mounted state of the superconducting magnet apparatus according to claim 1 Symbol placement, the estimated effective value of the tightening torque of the mounting bolts in the case different from the specified torque value, re-entered into the mounting bolts specified torque value If the vibration characteristic of the cart assembly does not recover to the value at the specified torque value, it is diagnosed as an abnormal state in which a structural change other than the fastening of the mounting bolt is occurring. A method for diagnosing the mounting state of a superconducting magnet device on a bogie frame. In a bogie assembly for diagnosing a bogie frame mounting state of a superconducting magnet device, a superconducting magnet device arranged as a pair, a bogie frame arranged inside the superconducting magnet device arranged as a pair, and the superconducting magnet A mounting bolt for fastening the device to the bogie frame, a vibration sensor mounted in the vicinity of the end of the mounting bolt, and a vibration measuring device for measuring the output of the vibration sensor. The effective value of the fastening torque of the mounting bolt after operation is estimated by grasping the vibration characteristics of the superconducting magnet device based on the estimated effective value, and the carriage frame mounting state of the superconducting magnet device is diagnosed based on the estimated effective value. A cart assembly for diagnosing the mounting state of the cart frame of the superconducting magnet device. 5. A carriage assembly for diagnosing a carriage frame mounting state of a superconducting magnet device according to claim 4 , wherein the carriage frame includes side beams of a carriage frame respectively arranged inside the superconducting magnet device arranged in pairs. A carriage assembly for diagnosing a carriage frame mounting state of a superconducting magnet device, comprising a carriage frame lateral beam arranged between side beams of the carriage frame.

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