阅读说明：本技术 一种扭矩传感器校准装置 (Torque sensor calibrating device ) 是由 胡翔 包福 左云 余烨 王昱 彭煜 谢震宇 尚廷东 贾洋 于 2019-12-06 设计创作，主要内容包括：本发明涉及一种扭矩传感器校准装置,包括固定支撑,固定支撑上连接有施扭组件,施扭组件具有用于向被检仪器传递扭矩的仪器连接端,施扭组件包括沿竖向串联布置的马达和标准扭矩传感器。本发明在使用时,固定支撑放置于支撑面上,为施扭组件提供一个反力基础,施扭组件中的马达提供校准所需的扭矩,使用马达代替现有的人力手持施扭力臂,避免因为人为操作而带来的非扭矩的偏斜力,以此提高校准精度。(The invention relates to a torque sensor calibration device which comprises a fixed support, wherein a torsion applying assembly is connected to the fixed support, the torsion applying assembly is provided with an instrument connecting end used for transmitting torque to an instrument to be detected, and the torsion applying assembly comprises a motor and a standard torque sensor which are vertically arranged in series. When the device is used, the fixed support is placed on the supporting surface to provide a counter-force foundation for the torque applying assembly, the motor in the torque applying assembly provides torque required by calibration, the motor is used for replacing the existing manual hand-held torque applying arm, and non-torque deflection force caused by manual operation is avoided, so that the calibration accuracy is improved.)

1. A torque sensor calibration device, characterized by: the torque applying assembly is connected to the fixed support and provided with an instrument connecting end used for transmitting torque to an instrument to be detected, and the torque applying assembly comprises a motor and a standard torque sensor which are vertically arranged in series.

2. The torque sensor calibration device of claim 1, wherein: the torque application assembly further includes a bellows extending in an up-down direction with an axis arranged in series with the motor and the standard torque sensor.

3. The torque sensor calibration device of claim 1, wherein: the fixed support is fixedly provided with a reaction arm.

4. The torque sensor calibration device of claim 2, wherein: the motor, the standard torque sensor and the corrugated pipe are coaxially and sequentially arranged in the vertical direction.

5. The torque sensor calibration device of claim 4, wherein: the fixed support comprises a support cylinder and a top connecting plate arranged at the top of the support cylinder, the motor, the standard torque sensor and the corrugated pipe are all arranged on the inner side of the support cylinder, and a motor shell of the motor is fixed on the top connecting plate.

6. The torque sensor calibration device of claim 5, wherein: the support cylinder is arranged coaxially with the motor, the standard torque sensor and the bellows.

7. The torque sensor calibration device of claim 5, wherein: the upper end of the corrugated pipe is provided with an upper connecting plate fixedly connected with the lower end of the standard torque sensor, the lower end of the corrugated pipe is provided with a lower connecting plate, and the instrument connecting end is arranged on the lower connecting plate.

8. The torque sensor calibration device of claim 7, wherein: a rotating bearing is arranged between the lower connecting plate and the inner wall of the supporting cylinder, the standard torque sensor, the instrument connecting end and the supporting cylinder are arranged coaxially, a bearing inner ring of the rotating bearing is fixed on the lower connecting plate, and a bearing outer ring of the rotating bearing is assembled on the supporting cylinder in a guiding and moving mode in the up-and-down direction.

9. The torque sensor calibration device of claim 8, wherein: the inner wall of the supporting cylinder is provided with a guide key strip extending along the up-down direction, and the bearing outer ring of the rotating bearing is in rotation stopping connection with the guide key strip and is in guide fit in the up-down direction.

Technical Field

The invention relates to a torque sensor calibration device in the field of torque calibration.

Background

In actual production life, the torque sensor needs to be calibrated periodically for an instrument with the torque sensor, and in the prior art, the torque sensor is calibrated through a standard torque wrench.

For example, the standard torque wrench disclosed in chinese patent application CN110196138A entitled "a standard torque wrench and a torque wrench calibration device" includes a torque applying arm and a standard torque sensor having a first torque transmission joint and a second torque transmission joint, the second torque transmission joint is used for connecting to an instrument to be tested, the standard torque wrench further includes a bellows coaxially disposed with the standard torque sensor, and the bellows is connected between the first torque transmission joint and the torque applying arm in a rotation stopping manner.

When the device is used, an operator holds the torque applying arm, applies horizontal torque to the corrugated pipe through the torque applying arm, transmits the torque to the detected instrument through the standard torque sensor, and calibrates the detected torque sensor by comparing the torque sensor indicating value of the detected instrument with the indicating value of the standard torque sensor. The bellows is arranged because when an operator holds the torque applying arm, the operator ideally applies a horizontal acting torque to the torque applying arm, but due to the hand holding angle or the experience of the operator, the torque applying arm may generate a vertical deflection acting force, and by utilizing the characteristics of the bellows, the torque can be transmitted, but the vertical acting force can be buffered through vertical telescopic deformation, so that only the torque can be transmitted to a standard torque sensor. The prior calibration device has the following problems: the use of the bellows reduces the vertical deflection force of the torsion arm on the standard torque sensor to a certain extent, but cannot eliminate the force fundamentally.

Disclosure of Invention

The invention aims to provide a torque sensor calibration device to solve the technical problem that vertical deflection acting force is easy to generate by applying force through a handheld torque applying arm in the prior art.

In order to solve the technical problems, the technical scheme of the invention is as follows:

the utility model provides a torque sensor calibrating device, includes the fixed bolster, is connected with on the fixed bolster and executes the subassembly of turning round, and it has the instrument link that is used for transmitting the moment of torsion to the instrument of examining to execute to turn round the subassembly, and it includes along vertical motor and the standard torque sensor of arranging in series to execute to turn round the subassembly.

The torque application assembly further includes a bellows extending in an up-down direction with an axis arranged in series with the motor and the standard torque sensor.

The fixed support is fixedly provided with a reaction arm.

The motor, the standard torque sensor and the corrugated pipe are coaxially and sequentially arranged in the vertical direction.

The fixed support comprises a support cylinder and a top connecting plate arranged at the top of the support cylinder, the motor, the standard torque sensor and the corrugated pipe are all arranged on the inner side of the support cylinder, and a motor shell of the motor is fixed on the top connecting plate.

The support cylinder is arranged coaxially with the motor, the standard torque sensor and the bellows.

The upper end of the corrugated pipe is provided with an upper connecting plate fixedly connected with the lower end of the standard torque sensor, the lower end of the corrugated pipe is provided with a lower connecting plate, and the instrument connecting end is arranged on the lower connecting plate.

A rotating bearing is arranged between the lower connecting plate and the inner wall of the supporting cylinder, the instrument connecting end and the supporting cylinder are arranged in a coaxial mode, a bearing inner ring of the rotating bearing is fixed on the lower connecting plate, and a bearing outer ring of the rotating bearing is assembled on the supporting cylinder in a guiding and moving mode in the up-down direction.

The inner wall of the supporting cylinder is provided with a guide key strip extending along the up-down direction, and the bearing outer ring of the rotating bearing is in rotation stopping connection with the guide key strip and is in guide fit in the up-down direction.

The invention has the beneficial effects that: when the device is used, the fixed support is placed on the supporting surface to provide a counter-force foundation for the torque applying assembly, the motor in the torque applying assembly provides torque required by calibration, the motor is used for replacing the existing manual hand-held torque applying arm, and non-torque deflection force caused by manual operation is avoided, so that the calibration accuracy is improved.

Drawings

FIG. 1 is a state diagram of the use of one embodiment of the present invention.

Detailed Description

An embodiment of a torque sensor calibration device is shown in fig. 1: comprises a fixed support 2 and a torsion component, wherein the fixed support comprises a support cylinder 3 and a top connecting plate 1 arranged at the top of the support cylinder, the torsion component comprises a motor 7, a standard torque sensor 8 and a corrugated pipe 10 which are coaxially and sequentially connected in series along the vertical direction, the support cylinder 3 is coaxially sleeved on the motor 7, the periphery of standard torque sensor 8 and bellows 10, the motor in this embodiment is electric motor, the motor casing of motor is fixed in on the top connecting plate 1, torque sensor's upper end and the torque output shaft fixed connection of motor, the upper end of bellows 10 is equipped with the upper junction plate 9 with standard torque sensor lower extreme fixed connection, the lower extreme of bellows 10 is equipped with lower connecting plate 4, be provided with on the lower connecting plate 4 and be used for to the instrument link 5 of examining the instrument transmission moment of torsion, the instrument link in this embodiment is the square tenon structure. The outer side of the supporting cylinder is fixedly provided with a reaction arm 11. In this embodiment, the bellows is a stainless steel metal bellows, such as Taxin TX-005 stainless steel bellows manufactured by Taxin bellows, Inc., of Nippon city.

A rotating bearing is arranged between the lower connecting plate 4 and the inner wall of the supporting barrel 3, the square tenon structure of the instrument connecting end and the supporting barrel are arranged coaxially through the rotating bearing, a bearing inner ring 16 of the rotating bearing is fixed on the lower connecting plate, and a bearing outer ring 14 of the rotating bearing is assembled on the supporting barrel in a guiding and moving mode along the up-down direction. In this embodiment, the inner wall of the support cylinder 3 is provided with a guide key strip 15 extending in the up-down direction, the outer periphery of the bearing outer ring of the rolling bearing is provided with a guide key groove matched with the guide key strip, and the rotation stopping connection between the bearing outer ring and the support cylinder and the guide matching in the up-down direction are realized through the matching of the guide key strip and the guide key groove.

When the square tenon type instrument is used, the instrument 6 to be detected is fixed on the supporting surface 13, the fixing rod 12 is arranged on the supporting surface, the supporting cylinder is sleeved on the periphery of the instrument to be detected, the square tenon structure is inserted into the square tenon hole of the instrument to be detected, due to the positioning effect of the rotating bearing, the corrugated pipe, the standard torque sensor and the supporting cylinder are in a coaxial line arrangement form, and the corrugated pipe is used, so that on one hand, torque can be transmitted, and in addition, the height of the connecting end of the instrument can be adjusted according to the height adaptability of the square tenon hole by utilizing the characteristic that the axial direction of the corrugated pipe can be adjusted in a telescopic mode. When the output torque required by the detected instrument is small, the friction force between the supporting cylinder and the supporting surface can ensure that the supporting cylinder is fixed, the detected instrument is calibrated by comparing the indication value of the detected instrument with the indication value of the standard torque sensor, and when the output torque required by the detected instrument is large, the action of the supporting cylinder under the action of the reaction force is prevented by blocking the reaction force arm and the fixing rod. In the invention, the output of the torque is realized through the motor, and the problem of deflection force possibly caused by manual handheld operation is avoided.

In other embodiments of the invention: when the required smaller output torque is calibrated, the reaction arm can be omitted; when a certain type of detected instrument is aimed at, the corrugated pipe can be omitted because the height between the square tenon hole of the detected instrument and the supporting surface is consistent; the order among the motor, the standard torque sensor and the corrugated pipe can be adjusted, for example, the corrugated pipe is connected between the standard torque sensor and the motor, or the corrugated pipe is arranged at the top, then the motor, the standard torque sensor or the standard torque sensor and the motor are arranged in sequence below, and of course, the standard torque sensor can also be arranged at the top; according to different stress structures of the detected instrument, the instrument connecting end on the standard torque sensor can also be adjusted in an adaptive mode, for example, when the stress structure on the detected instrument is a square tenon head, the instrument connecting end can be a square tenon hole structure matched with the stress structure.