Calibration device and calibration method of torque measurement system

Abstract

The present invention relates to the technical field of torque calibration, and discloses a calibration device and a calibration method for a torque measurement system. The calibration device for a torque measurement system comprises a spindle mechanism and calibration components symmetrically arranged on both sides thereof. The spindle mechanism comprises a spindle, and test pieces in a torque measurement system to be calibrated are arranged at both ends of the spindle. The test pieces measure the torque T at both ends of the spindle. 实测 The calibration assembly includes a test gearbox, a torque meter and a torsion bar. The low-speed stage of the test gearbox is connected to the end of the main shaft. One end of the torque meter is connected to the high-speed stage of the test gearbox, and the other end is connected to the torsion bar. The torsion bar on one side of the main shaft mechanism is fixed, and the torsion bar on the other side is used to apply torque. The torque meter measures the torque T of the high-speed stage of the test gearbox. 高 The calibration device of the torque measurement system can realize the accurate calibration of the torque measurement system and ensure the accuracy of the calibration result.

Description

Technical Field

[0001] The present invention relates to the technical field of torque calibration, and in particular to a calibration device and a calibration method for a torque measurement system. Background Art

[0002] Gearbox is the core component and key failure component in the transmission field. It is composed of multi-stage gear shaft system, which transmits both speed and torque in the power transmission process. In most cases, the working environment of gearbox is relatively harsh, especially the main gearbox of wind power, whose operating load is variable and often encounters extreme load conditions. Monitoring its input and output torque is of great significance for the health monitoring of gearbox.

[0003] At present, due to the small torque of high-speed shaft systems, it is easy to purchase mature torque meter products for accurate measurement. However, it is difficult to accurately measure and monitor the torque of several thousand kilonewton meters of the main shaft of a heavy-duty gearbox. The main reason is that it is difficult to accurately calibrate the torque measurement system. Because the bearings of large megawatt motors are sliding bearings, it is impossible to lock one motor in a stationary state and the other motor applies a large torque according to the load step, so it is impossible to accurately calibrate the torque measurement system. If the calibration of the torque measurement system is inaccurate, the torque measurement system will also measure the torque of the heavy-duty gearbox main shaft inaccurately, and it will not be able to effectively monitor the main shaft torque state.

[0004] Therefore, a new type of calibration device for torque measurement system is urgently needed to solve the above technical problems. Summary of the invention

[0005] An object of the present invention is to provide a calibration device for a torque measurement system, which can realize accurate calibration of the torque measurement system and improve the accuracy of the torque measurement of the gearbox spindle by the torque measurement system after calibration.

[0006] Another object of the present invention is to provide a calibration method for a torque measurement system, which can accurately calibrate the torque measurement system and ensure the accuracy of the calibration result.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A calibration device for a torque measurement system, comprising:

[0009] The spindle mechanism comprises a spindle, wherein both ends of the spindle are provided with a test piece in a torque measurement system to be calibrated, and the test piece can measure the torque T at both ends of the spindle. 实测 ;

[0010] A calibration component, which is symmetrically arranged on both sides of the spindle mechanism;

[0011] The calibration assembly includes a test gearbox, a torque meter and a torsion bar. The low-speed stage of the test gearbox is connected to the end of the main shaft. One end of the torque meter is connected to the high-speed stage of the test gearbox, and the other end is connected to the torsion bar. The torsion bar on one side of the main shaft mechanism is fixed, and the torsion bar on the other side is used to apply torque. The torque meter can measure the torque T of the high-speed stage of the test gearbox. 高 .

[0012] As a preferred solution of the calibration device of the torque measurement system, it also includes a first transition plate and a first shaft adapter, wherein the first transition plate is mounted on one end of the torque meter, the first shaft adapter is mounted on the rotating shaft of the high-speed stage of the companion test gearbox, and the first shaft adapter is connected to the first transition plate. As a preferred solution of the calibration device of the torque measurement system, it also includes a second shaft adapter and a second transition plate, wherein the second shaft adapter is mounted on the torsion bar, the second transition plate is mounted on the other end of the torque meter, and the second shaft adapter is connected to the second transition plate.

[0013] As a preferred solution of the calibration device of the torque measurement system, it also includes a torsion bar support frame and a bearing seat, the bearing seat is installed on the torsion bar support frame, and the torsion bar is rotatably inserted into the bearing seat.

[0014] As a preferred solution of the calibration device of the torque measurement system, it also includes a test support frame, and the test gearbox is installed on the test support frame through tooling.

[0015] As a preferred solution of the calibration device of the torque measurement system, it also includes a spindle support frame, and the spindle is installed on the spindle support frame through a tooling main bearing.

[0016] As a preferred solution of the calibration device of the torque measurement system, the test piece is a torque test strain bridge.

[0017] As a preferred solution of the calibration device of the torque measurement system, the test piece is arranged at the journal of the main shaft.

[0018] As a preferred solution of the calibration device of the torque measurement system, the torque measurement system is a wireless stress measurement system.

[0019] A method for calibrating a torque measurement system, based on the calibration device for the torque measurement system as described above, comprises:

[0020] Fixing a torsion bar on one side of the spindle mechanism and applying torque to a torsion bar on the other side of the spindle mechanism;

[0021] The torque at both ends of the spindle in the spindle mechanism is measured using the test piece in the torque measurement system to be calibrated and recorded as T实测 ;

[0022] The torque of the high-speed stage of the test gearbox is measured by a torque meter and recorded as T 高 ;

[0023] According to T 高 The theoretical value of the main shaft end torque is calculated by the speed ratio of the accompanying gearbox and recorded as T 理论 ;

[0024] T at the same end of the spindle 实测 With T 理论 , to calibrate the torque measurement system.

[0025] The beneficial effects of the present invention are:

[0026] The calibration device of the torque measurement system provided by the present invention symmetrically builds a test gearbox, a torque meter and a torsion bar on both sides of the main shaft mechanism, and fixes and locks the torsion bar on one side, and applies torque to the torsion bar on the other side, thereby avoiding the situation that one motor cannot be locked in a static state due to the sliding bearing, and then can realize accurate calibration of the torque measurement system, ensure the accuracy of the calibration result, and improve the accuracy of the torque measurement system for the gearbox main shaft torque after the calibration; in addition, by arranging the torque meter on both sides of the main shaft, the mechanical loss in the torque transmission process can be obtained, so that the mechanical loss can be taken into account in the calibration process, so as to further improve the accuracy of the calibration result.

[0027] The torque measurement system calibration method provided by the present invention can accurately calibrate the torque measurement system and ensure the accuracy of the calibration result. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0029] Figure 1 It is a structural schematic diagram of a calibration device for a torque measurement system provided in an embodiment of the present invention.

[0030] In the figure:

[0031] 100-test pieces;

[0032] 1-spindle mechanism; 11-spindle;

[0033] 2-Test gearbox;

[0034] 3-Torque meter;

[0035] 4-Torsion bar;

[0036] 51-first transition plate; 52-first shaft handle;

[0037] 61-second shaft receiving handle; 62-second transition receiving plate;

[0038] 7-Torsion bar support frame;

[0039] 8-bearing seat;

[0040] 9-Test support frame;

[0041] 10-Spindle support frame. DETAILED DESCRIPTION

[0042] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0043] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, or to distinguish different structures or components, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0044] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] like Figure 1As shown, this embodiment provides a calibration device for a torque measurement system. The torque measurement system after calibration can be used to detect the torque of a heavy-duty gearbox spindle. Specifically, the calibration device for the torque measurement system includes a spindle mechanism 1 and a calibration component. The calibration components are symmetrically arranged on both sides of the spindle mechanism 1. The spindle mechanism 1 includes a spindle 11. Both ends of the spindle 11 are provided with a test piece 100 in the torque measurement system to be calibrated. The test piece 100 can measure the torque T at both ends of the spindle 11. 实测 The calibration assembly includes a test gearbox 2, a torque meter 3 and a torsion bar 4. The low-speed stage of the test gearbox 2 is connected to the end of the main shaft 11. One end of the torque meter 3 is connected to the high-speed stage of the test gearbox 2, and the other end is connected to the torsion bar 4. The torsion bar 4 on one side of the main shaft mechanism 1 is fixed, and the torsion bar 4 on the other side is used to apply torque. The torque meter 3 can measure the torque T of the high-speed stage of the test gearbox 2. 高 Specifically, in this embodiment, the torque can be applied to the torsion bar 4 manually or by a motor. It should be noted that the torque meter 3 is a calibrated torque meter, and the value measured by the torque meter 3 will be used as a standard value.

[0046] In this embodiment, first, the torque T at both ends of the main shaft 11 is measured using the test piece 100 in the torque measurement system. 实测 , use the torque meter 3 to measure the torque T of the high-speed stage of the test gearbox 2 高 Then, the torque T of the high-speed stage of the test gearbox 2 is obtained by measuring the torque meter 3. 高 The theoretical value T of the end torque of the main shaft 11 is calculated by converting the speed ratio between the high speed stage and the low speed stage of the accompanying gearbox 2. 理论 Finally, align the T at the same end of the spindle 11 实测 With T 理论 If the benchmarking result is within the allowable error range, it proves that the measurement result of the torque measurement system is relatively accurate, and the torque measurement system can be used to measure the torque of other heavy-loaded gearbox spindles.

[0047] The calibration device of the torque measurement system provided in the present embodiment symmetrically builds a test gearbox 2, a torque meter 3 and a torsion bar 4 on both sides of the spindle mechanism 1, and fixes and locks the torsion bar 4 on one side, and applies torque to the torsion bar 4 on the other side, thereby avoiding the situation that a large megawatt motor cannot lock one motor and apply a torque load to another motor in a stationary state, thereby achieving accurate calibration of the torque measurement system, ensuring the accuracy of the calibration result, and improving the accuracy of the torque measurement system for the gearbox spindle torque after the calibration; in addition, by arranging the torque meter 3 on both sides of the spindle 11, the mechanical loss in the torque transmission process can be obtained, so that the mechanical loss can be taken into account in the calibration process to further improve the accuracy of the calibration result.

[0048] Specifically, in this embodiment, the test piece 100 is a torque test strain bridge circuit, including a strain gauge. Further, the strain gauge is arranged at the journal of the main shaft 11.

[0049] In this embodiment, the torque measurement system is a wireless stress measurement system.

[0050] Preferably, the calibration device of the torque measurement system provided in this embodiment further includes a first transition plate 51 and a first shaft adapter 52, wherein the first transition plate 51 is mounted on one end of the torque meter 3, the first shaft adapter 52 is mounted on the high-speed rotating shaft of the accompanying test gearbox 2, and the first transition plate 51 is connected to the first shaft adapter 52. The cooperation between the first transition plate 51 and the first shaft adapter 52 is conducive to ensuring the stability of the connection between the torque meter 3 and the high-speed rotating shaft of the accompanying test gearbox 2.

[0051] Preferably, the calibration device of the torque measurement system provided in this embodiment also includes a second shaft connector 61 and a second transition plate 62, the second shaft connector 61 is installed on the torsion bar 4, the second transition plate 62 is installed at the other end of the torque meter 3, and the second shaft connector 61 is connected to the second transition plate 62.

[0052] Optionally, in this embodiment, the calibration device of the torque measurement system further includes a torsion bar support frame 7 and a bearing seat 8, wherein the bearing seat 8 is mounted on the torsion bar support frame 7, and the torsion bar 4 is rotatably inserted into the bearing seat 8. The torsion bar support frame 7 and the bearing seat 8 can support the torsion bar 4, thereby ensuring that the torsion bar 4 can stably and reliably transmit torque.

[0053] In order to ensure the stability of the installation of the accompanying test gearbox 2, the calibration device of the torque measurement system further includes an accompanying test support frame 9, and the accompanying test gearbox 2 is installed on the accompanying test support frame 9 through a tool.

[0054] Optionally, in this embodiment, the calibration device of the torque measurement system further includes a spindle support frame 10, and the spindle 11 is mounted on the spindle support frame 10 through a tooling main bearing.

[0055] This embodiment further provides a calibration method for a torque measurement system, based on the calibration device for the torque measurement system, comprising:

[0056] Fix the torsion bar 4 on one side of the spindle mechanism 1, and apply torque to the torsion bar 4 on the other side of the spindle mechanism 1;

[0057] The torque at both ends of the spindle 11 in the spindle mechanism 1 is measured by using the test piece 100 in the torque measurement system to be calibrated and recorded as T 实测 ;

[0058] The torque of the high-speed stage of the test gearbox 2 is measured by the torque meter 3 and recorded as T 高 ;

[0059] According to T 高 The theoretical value of the end torque of the main shaft 11 is calculated by converting the speed ratio between the high speed stage and the low speed stage of the companion gearbox 2 and recorded as T 理论 ;

[0060] T at the same end of the main shaft 11 实测 With T 理论 , to calibrate the torque measurement system.

[0061] The torque measurement system calibration method provided in this embodiment can accurately calibrate the torque measurement system, ensure the accuracy of the calibration result, and improve the accuracy of the torque measurement system for the gearbox main shaft after the calibration.

[0062] Note that the above are only preferred embodiments of the present invention and the technical principles used. It will be understood by those skilled in the art that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may also include more other equivalent embodiments without departing from the concept of the present invention.

Claims

1. A calibration device for a torque measurement system, characterized in that: include: The spindle mechanism comprises a spindle, wherein both ends of the spindle are provided with a test piece in a torque measurement system to be calibrated, and the test piece can measure the torque T at both ends of the spindle. 实测 ; A calibration component, which is symmetrically arranged on both sides of the spindle mechanism; The calibration assembly includes a test gearbox, a torque meter and a torsion bar. The low-speed stage of the test gearbox is connected to the end of the main shaft. One end of the torque meter is connected to the high-speed stage of the test gearbox, and the other end is connected to the torsion bar. The torsion bar on one side of the main shaft mechanism is fixed, and the torsion bar on the other side is used to apply torque. The torque meter can measure the torque T of the high-speed stage of the test gearbox. 高 .

2. The calibration device of the torque measurement system according to claim 1, characterized in that: It also includes a first transition plate and a first shaft adapter, wherein the first transition plate is mounted at one end of the torque meter, the first shaft adapter is mounted on the rotating shaft of the high-speed stage of the companion gearbox, and the first shaft adapter is connected to the first transition plate.

3. The calibration device of the torque measurement system according to claim 1, characterized in that: It also includes a second shaft adapter and a second transition plate, wherein the second shaft adapter is mounted on the torsion bar, the second transition plate is mounted on the other end of the torque meter, and the second shaft adapter is connected to the second transition plate.

4. The calibration device for a torque measurement system according to claim 1, characterized in that: It also includes a torsion bar support frame and a bearing seat, wherein the bearing seat is mounted on the torsion bar support frame, and the torsion bar is rotatably inserted into the bearing seat.

5. The calibration device for a torque measurement system according to claim 1, characterized in that: It also includes a test support frame, and the test gear box is installed on the test support frame through tooling.

6. The calibration device for a torque measurement system according to claim 1, characterized in that: It also includes a main shaft support frame, and the main shaft is installed on the main shaft support frame through a tooling main bearing.

7. The calibration device for a torque measurement system according to claim 1, characterized in that: The test piece is a torque test strain bridge.

8. The calibration device for a torque measurement system according to claim 1, characterized in that: The test piece is arranged at a journal of the spindle.

9. The calibration device for a torque measurement system according to claim 1, characterized in that: The torque measurement system is a wireless stress measurement system.

10. A method for calibrating a torque measurement system, based on the calibration device for a torque measurement system according to any one of claims 1 to 9, characterized in that: include: Fixing a torsion bar on one side of the spindle mechanism and applying torque to a torsion bar on the other side of the spindle mechanism; The torque at both ends of the spindle in the spindle mechanism is measured using the test piece in the torque measurement system to be calibrated and recorded as T 实测 ; The torque of the high-speed stage of the test gearbox is measured by a torque meter and recorded as T 高 ; According to T 高 The theoretical value of the main shaft end torque is calculated by the speed ratio of the accompanying gearbox and recorded as T 理论 ; T at the same end of the spindle 实测 With T 理论 , to calibrate the torque measurement system.

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