A fixture for high speed type torque sensor calibration

Abstract

The utility model discloses a kind of clamps for high-speed type torque sensor calibration, including bed, fixed seat is equipped on the bed, torque sensor is equipped on the fixed seat, support seat is provided at the rear end of the torque sensor, and support seat is connected with torque sensor, clamping piece is equipped on the output end of the torque sensor, and clamping groove is opened in clamping piece, clamping piece is equipped with clamping assembly;The utility model is by setting clamping assembly, the centrifugal force generated when rotating is continuously clamped calibration object, so that the stability of object is maintained during calibration, avoid the coaxiality of sensor and torque input shaft from deviating due to loosening, introduce additional measurement error, prevent the situation of equipment damage and safety accident caused by sensor falling off, improve stability and security.

Description

Technical Field

[0001] This utility model relates to the field of torque sensor technology, and in particular to a fixture for calibrating high-speed torque sensors. Background Technology

[0002] In modern industry, high-speed torque sensors are widely used in high-precision measurement scenarios such as automotive engine testing and aerospace power system inspection. To ensure the accuracy of torque sensor measurements, regular calibration is essential, and the performance of the calibration fixture, as a key component for fixing the sensor, directly affects the reliability of the calibration results.

[0003] Currently, most clamps used for torque sensor calibration on the market employ traditional mechanical clamping methods, such as bolt tightening and clamping with clips. While these clamps can meet basic fixation requirements during low-speed or static calibration, they exhibit significant limitations in high-speed torque sensor calibration scenarios. At high speeds, the sensor generates substantial dynamic loads and vibrations. Traditional clamps, due to insufficient structural strength and poor positioning accuracy, are prone to clamping instability. Once the clamp loosens, it can not only cause a misalignment between the sensor and the torque input shaft, introducing additional measurement errors, but may even lead to the sensor detaching, resulting in equipment damage and safety accidents.

[0004] To address this issue, a fixture for calibrating high-speed torque sensors is proposed to solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems by providing a fixture for calibrating high-speed torque sensors. This invention utilizes a clamping assembly to continuously clamp the object to be calibrated using the centrifugal force generated during rotation, ensuring stability during calibration. This prevents misalignment of the sensor and torque input shaft due to loosening, thus avoiding additional measurement errors and preventing sensor detachment that could damage equipment or cause safety accidents. The technical solution adopted by this invention to achieve the above objectives is as follows:

[0006] According to one aspect of the present invention, a fixture for calibrating a high-speed torque sensor is provided, including a base, a fixed seat on the base, a torque sensor on the fixed seat, a support seat at the rear end of the torque sensor and the support seat being connected to the torque sensor, a clamping member on the output end of the torque sensor, a clamping groove on the clamping member, and a clamping assembly on the clamping member.

[0007] Preferably, the clamping assembly includes a plurality of placement slots evenly distributed on the clamping member, and each placement slot is provided with a support rod on the side near the edge of the clamping member. Each support rod is movably provided with a clamping arm, and the other end of each clamping arm extends toward the center of the clamping member. The lower end of each clamping arm is provided with a clamping plate through a spring hinge, and each placement slot is provided with a connecting assembly.

[0008] Preferably, the connecting assembly includes inclined grooves respectively formed at the upper end of each placement groove, and each inclined groove is inclined downward. Each inclined groove is provided with a limiting spring at its bottom, and each limiting spring is provided with a connecting rod. Each connecting rod extends upward along the connecting groove to the outside of the connecting groove. Each support rod is provided with a bridging rod, and one end of the bridging rod is connected to the clamping arm, and the other end is hinged to the corresponding connecting rod.

[0009] Preferably, each of the clamping arms is in the shape of a downwardly inclined arc, and the cross-section of each clamping plate is arc-shaped.

[0010] Preferably, the clamping groove has multiple limiting strips evenly distributed around its inner circumference, and each limiting strip is made of rubber.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0012] The fixture for calibrating a high-speed torque sensor described in this utility model uses a clamping assembly to continuously clamp the object to be calibrated by means of the centrifugal force generated during rotation. This keeps the object stable during the calibration process, preventing the coaxiality of the sensor and the torque input shaft from shifting due to loosening, thus avoiding additional measurement errors and preventing the sensor from falling off, which could lead to equipment damage and safety accidents. This improves stability and safety. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present invention;

[0014] Figure 2 This is a utility model Figure 1 Enlarged view of point A;

[0015] Figure 3 This is a utility model Figure 1 BB cross-section diagram;

[0016] In the attached diagram, 1 is the machine base; 2 is the fixed base; 3 is the torque sensor; 4 is the support base; 5 is the clamping component; 6 is the clamping groove; 7 is the placement groove; 8 is the support rod; 9 is the clamping arm; 10 is the clamping plate; 11 is the inclined groove; 12 is the limiting spring; 13 is the connecting rod; 14 is the bridging rod; and 15 is the limiting strip. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of the utility model, and these aspects can be achieved even without these specific details.

[0018] Please see Figures 1 to 3 This utility model provides a fixture for calibrating high-speed torque sensors, the technical solution of which is as follows:

[0019] The device includes a base 1, a fixed seat 2 on the base 1, a torque sensor 3 on the fixed seat 2, a support seat 4 at the rear end of the torque sensor 3 and the support seat 4 being connected to the torque sensor 3, a clamping member 5 on the output end of the torque sensor 3, a clamping groove 6 on the clamping member 5, and a clamping assembly on the clamping member 5.

[0020] During calibration, the object to be calibrated is placed in the clamping slot 6, which temporarily fixes it. A motor is located at the lower end of the base 1 and is electrically connected to the torque sensor 3. The torque sensor 3 starts and drives the clamping component 5 to rotate, calibrating the object to be calibrated. During the process, since the torque sensor 3 is a high-speed torque sensor, that is, it rotates at a high speed, the clamping component uses the centrifugal force generated during rotation to continuously clamp the object to be calibrated, keeping the object stable during calibration. This avoids the misalignment of the sensor and the torque input shaft due to loosening, which would introduce additional measurement errors and prevent the sensor from falling off, thus preventing equipment damage and safety accidents, thereby improving stability and safety.

[0021] The clamping assembly includes a plurality of placement slots 7 evenly distributed on the clamping member 5, and each placement slot 7 is provided with a support rod 8 on the side near the edge of the clamping member 5. Each support rod 8 is movably provided with a clamping arm 9, and the other end of each clamping arm 9 extends toward the center of the clamping member 5. The lower end of each clamping arm 9 is provided with a clamping plate 10 through a spring hinge. Each placement slot 7 is provided with a connecting assembly.

[0022] By using a distributed layout of multiple placement slots 7, clamping arms 9, and clamping plates 10, and with the help of centrifugal force from the connecting components, multiple levers are formed with the support rod 8 as the fulcrum to continuously clamp the object. The object is clamped in a wrapping manner from different angles. Compared with the traditional single clamping structure, the clamping force can be distributed more evenly. Under high-speed rotation and vibration conditions, it can effectively avoid the loosening and displacement caused by excessive local force on the sensor, thus improving the clamping stability.

[0023] The clamping plate 10 is connected by a spring hinge. The spring hinge is restrictive, meaning it can only rotate at a certain angle. It can adaptively adjust the angle and fit according to the shape of the object to ensure full contact with the sensor when clamped, further enhancing the fixing effect and adapting to the calibration requirements of high-speed torque sensors 3 of different specifications.

[0024] The connecting assembly includes inclined grooves 11 respectively opened at the upper end of each placement groove 7, and each inclined groove 11 is inclined downward. Each inclined groove 11 is provided with a limiting spring 12 at the bottom, and each limiting spring 12 is provided with a connecting rod 13. Each connecting rod 13 extends upward along the connecting groove to the outside of the connecting groove. Each support rod 8 is provided with a bridging rod 14, and one end of the bridging rod 14 is connected to the clamping arm 9, and the other end is hinged to the corresponding connecting rod 13.

[0025] During high-speed rotation, multiple connecting rods 13 move towards the outer edge of the clamping member 5 under the action of centrifugal force, thereby causing the limiting spring 12 to extend. With the support rod 8 as the fulcrum, a lever is formed. Through the linkage of connecting rods 13, bridging rods 14 and clamping arms 9, the centrifugal force is converted into the clamping force of the clamping arms 9 on the sensor. Compared with traditional manual or simple mechanical clamping, the lever structure can use mechanical principles to make the clamping force act on the sensor more evenly and stably. During high-speed rotation, it continuously and stably clamps the object, ensuring the accurate position of the sensor during the calibration process.

[0026] Each of the clamping arms 9 is shaped like a downwardly inclined arc, and each clamping plate 10 has an arc-shaped cross-section. The arc-shaped clamping arms 9 and the arc-shaped clamping plates 10 can naturally conform to the outer contour of the object, increase the contact area, disperse the clamping force, reduce local stress concentration during high-speed rotation, avoid the sensor from slipping or shifting due to uneven force, and improve clamping stability. The downwardly inclined arc-shaped clamping arms 9 have a guiding and gathering effect on the object placed in the clamping slot 6, improving the clamping stability.

[0027] The clamping groove 6 has multiple limiting strips 15 evenly distributed around its inner circumference, and each limiting strip 15 is made of rubber. During the process of placing an object into the clamping groove 6, the evenly distributed limiting strips 15 can restrict the movement of the object from multiple directions, fill the gap between the object and the inner wall of the clamping groove 6, and work with the clamping assembly to form a dual guarantee of pre-fixation and active clamping, preventing the object from shifting due to external force or vibration before the clamping assembly is fully activated, and significantly improving the stability of temporary fixation.

[0028] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A fixture for calibrating a high-speed torque sensor, characterized in that, include: A base (1) is provided with a fixed seat (2), a torque sensor (3) is provided on the fixed seat (2), a support seat (4) is provided at the rear end of the torque sensor (3), and the support seat (4) is connected to the torque sensor (3). A clamping member (5) is provided on the output end of the torque sensor (3), and a clamping groove (6) is provided on the clamping member (5). A clamping component is provided on the clamping member (5).

2. The fixture for calibrating a high-speed torque sensor according to claim 1, characterized in that: The clamping assembly includes a plurality of placement slots (7) evenly opened on the clamping member (5), and each placement slot (7) is provided with a support rod (8) on the side near the edge of the clamping member (5). Each support rod (8) is movably provided with a clamping arm (9), and the other end of each clamping arm (9) extends toward the center of the clamping member (5). The lower end of each clamping arm (9) is provided with a clamping plate (10) through a spring hinge. Each placement slot (7) is provided with a connecting assembly.

3. The fixture for calibrating a high-speed torque sensor according to claim 2, characterized in that: The connecting assembly includes inclined slots (11) respectively opened at the upper end of each placement slot (7), and each inclined slot (11) is inclined downward. Each inclined slot (11) is provided with a limiting spring (12) at the bottom, and each limiting spring (12) is provided with a connecting rod (13). Each connecting rod (13) extends upward along the connecting slot to the outside of the connecting slot. Each support rod (8) is provided with a bridging rod (14), and one end of the bridging rod (14) is connected to the clamping arm (9), and the other end is hinged to the corresponding connecting rod (13).

4. The fixture for calibrating a high-speed torque sensor according to claim 2, characterized in that: Each of the clamping arms (9) is shaped as a downwardly inclined arc, and each clamping plate (10) has an arc-shaped cross section.

5. The fixture for calibrating a high-speed torque sensor according to claim 1, characterized in that: The clamping groove (6) has multiple limiting strips (15) evenly distributed around its inner circumference, and each limiting strip (15) is made of rubber.

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