Online torque calibration device

Abstract

The utility model provides an online torque calibration device, which relates to the technical field of torque wrench detection and comprises a calibration table, a mounting column is arranged on the calibration table, a torque sensor is arranged at one end of the mounting column, a rotating ring is rotatably connected onto the mounting column through a bearing, and a connector is arranged on the torque sensor. A mounting rod with an L-shaped main body is arranged on the rotating ring, the rotating ring is connected with a force application driving assembly, an electric push rod is arranged on the mounting rod, and the electric push rod is connected with a fixing block in contact with the handle end of the torque wrench; according to the device, a torque calibration process can be performed on the torque wrench online in real time, compared with the mode that manual intervention is needed to enable a fixing sleeve to limit the handle end of the torque wrench in the prior art, the follow-up calibration process can be automatically completed only by manually installing the working end of the torque wrench on the connector, operation is more convenient, and the operation efficiency is improved. The automation degree is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of torque wrench detection, in particular to an online torque calibration device. Background Art

[0002] A torque wrench, also known as a torque wrench or an adjustable torque wrench, is a type of wrench. When the tightness of screws and bolts is critical, the use of a torque wrench allows the operator to apply a specific torque value. In order to ensure the accuracy and reliability of the torque value of the torque wrench, it is necessary to regularly use a torque wrench calibration device to detect and calibrate the torque of the wrench.

[0003] Announcement No. CN215414191U proposes a torque wrench calibration device, which reduces the wear of the torque wrench on the calibration device and improves the service life and use efficiency of the calibration device; however, the device requires manual intervention to realize the movement of the fixed sleeve and then limit the handle end of the torque wrench, and the degree of automation needs to be further improved. Utility Model Content

[0004] The purpose of the utility model is to solve the problems raised in the above background technology, and then propose an online torque calibration device.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] An online torque calibration device comprises a calibration platform, a mounting column is arranged on the calibration platform, a torque sensor is arranged at one end of the mounting column and a rotating ring is rotatably connected to the mounting column through a bearing, a connecting head is arranged on the torque sensor, a mounting rod with an L-shaped main body is arranged on the rotating ring and a force driving assembly is connected to the rotating ring, an electric push rod is arranged on the mounting rod, the electric push rod is connected to a fixed block in contact with the handle end of a torque wrench, a through hole is opened on the fixed block to allow the mounting rod to pass through and force rollers are symmetrically arranged on the fixed block.

[0007] The device can perform a torque calibration process on the torque wrench online in real time. Compared with the prior art which requires manual intervention to limit the handle end of the torque wrench with a fixed sleeve, the device only requires manual installation of the working end of the torque wrench on the connector to automatically complete the subsequent calibration process. The operation is more convenient and the degree of automation is further improved.

[0008] Furthermore, the force-applying driving assembly includes a sub-gear, a servo motor and a main gear. The calibration table is provided with a servo motor, the servo motor is connected to the main gear, and the main gear meshes with the sub-gear fixed on the rotating ring.

[0009] The above scheme can finally realize the force-applying roller to make a circular motion with the center of the mounting column as the center through the force-applying driving assembly, thereby applying force to the handle end of the torque wrench to perform torque calibration.

[0010] Furthermore, a rubber pad is sleeved on the force applying roller.

[0011] Furthermore, a rubber layer is provided on the edge of the upper surface of the fixing block.

[0012] The above solution can reduce the probability of the torque wrench being worn by the force roller during the force application process by using the rubber pad, and at the same time, the rubber layer can further reduce the probability of the fixed block being worn when it approaches and contacts the handle end of the torque wrench.

[0013] Furthermore, the electric push rod is provided with a distance sensor for detecting the distance between the electric push rod and the fixed block in real time.

[0014] The above scheme can accurately define the movement position of the fixing block before the torque wrench is initially placed and the movement direction when the fixing block is close to the torque wrench after the placement through the distance sensor, and the automatic control is more accurate.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The device can perform a torque calibration process on the torque wrench online in real time. Compared with the prior art which requires manual intervention to limit the handle end of the torque wrench with a fixed sleeve, the device only requires manual installation of the working end of the torque wrench on the connector to automatically complete the subsequent calibration process. The operation is more convenient and the degree of automation is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the installation of the force-applying roller and the fixed block;

[0019] Reference numerals:

[0020] 1. Calibration table; 11. Mounting column; 12. Torque sensor; 121. Connector; 13. Rotating ring; 14. Sub gear; 15. Servo motor; 16. Main gear; 17. Mounting rod; 21. Electric push rod; 22. Fixed block; 23. Through hole; 24. Force roller; 25. Rubber pad; 26. Distance sensor. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. The utility model is further described in combination with the drawings and embodiments:

[0022] like Figure 1 and Figure 2 As shown, an online torque calibration device includes a calibration platform 1, a mounting column 11 is provided on the calibration platform 1, a torque sensor 12 is provided at one end of the mounting column 11, and a rotating ring 13 is rotatably connected to the mounting column 11 through a bearing, a connector 121 for docking with a mounting sleeve at the working end of a torque wrench is provided on the torque sensor 12, a mounting rod 17 with an L-shaped main body is provided on the rotating ring 13, and a force driving assembly is connected to the rotating ring 13, an electric push rod 21 is provided at the bottom of the mounting rod 17, the electric push rod 21 is connected to a fixed block 22 in contact with the handle end of the torque wrench, a through hole 23 is opened on the fixed block 22 for allowing the mounting rod 17 to pass through, and force rollers 24 are symmetrically arranged on the fixed block 22.

[0023] Specifically, the force driving assembly includes a sub-gear 14 , a servo motor 15 and a main gear 16 . The calibration platform 1 is provided with the servo motor 15 , which is connected to the main gear 16 . The main gear 16 meshes with the sub-gear 14 fixed on the rotating ring 13 .

[0024] It should be noted that the torque sensor 12 , the servo motor 15 and the electric push rod 21 are all electrically connected to the controller, which is not shown in the figure.

[0025] The workflow of this utility model:

[0026] Before performing torque calibration, first install a sleeve on the working end of the torque wrench, then dock the sleeve with the connector 121 and make the initial torque value zero. At this time, the torque wrench can be fine-tuned by rotating it in the direction of the ratchet to make the sleeve and the connector 121 accurately docked. After the docking of the two is completed, the mounting rod 17 is under the torque wrench, and the handle end of the torque wrench is just in the area between the two force rollers 24. Then the controller controls the electric push rod 21 to work so that the fixed block 22 is close to the end of the torque wrench (in the initial state, the fixed block 22 is away from the end of the torque wrench so as not to affect the placement of the torque wrench). During the approaching process, the mounting rod 1 7 will pass through the through hole 23 and the upper surface of the fixing block 22 will contact the handle end of the torque wrench to achieve support. After the movement is completed, the handle end of the torque wrench is between the two force rollers 24. Then the controller controls the force driving assembly to work and realize the deflection of the mounting rod 17. At this time, the mounting rod 17 drives the two force rollers 24 to make a circular motion with the center of the mounting column 11 as the center of the circle. Then one of the force rollers 24 will contact the handle end of the torque wrench and apply force. At this time, the torque wrench can be calibrated, that is, the torque value pre-set on the torque wrench is compared with the value measured by the torque sensor 12 to check whether the torque value is accurate;

[0027] The device can perform a torque calibration process on the torque wrench online in real time. Compared with the prior art which requires manual intervention to limit the handle end of the torque wrench with a fixed sleeve, the device only requires manual installation of the working end of the torque wrench on the connector 121 to automatically complete the subsequent calibration process. The operation is more convenient and the degree of automation is further improved.

[0028] In some embodiments, Figure 1 and Figure 2 As shown, a rubber pad 25 is sleeved on the force-applying roller 24;

[0029] As a further optimization of the above embodiment, a rubber layer is provided on the edge of the upper surface of the fixing block 22, which is not shown in the figure. This embodiment can reduce the probability of wear on the torque wrench during the force application process of the force roller 24 through the rubber pad 25, and at the same time, the rubber layer can further reduce the probability of wear on the handle end of the torque wrench when the fixing block 22 approaches and contacts the handle end of the torque wrench.

[0030] In other embodiments, Figure 1 As shown, the electric push rod 21 is provided with a distance sensor 26 for real-time detection of the distance between the electric push rod 21 and the fixed block 22; this embodiment can accurately define the movement position of the fixed block 22 before the torque wrench is initially placed and the movement direction when it is close to the torque wrench after placement through the distance sensor 26, and the automatic control is more accurate.

[0031] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions in the specification are only to illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. An online torque calibration device, characterized in that: The calibration platform (1) comprises a mounting column (11), a torque sensor (12) being arranged at one end of the mounting column (11), a rotating ring (13) being rotatably connected to the mounting column (11) via a bearing, a connector (121) being arranged on the torque sensor (12), a mounting rod (17) having an L-shaped main body being arranged on the rotating ring (13), and a force application drive assembly being connected to the rotating ring (13), an electric push rod (21) being arranged on the mounting rod (17), the electric push rod (21) being connected to a fixed block (22) in contact with a handle end of a torque wrench, a through hole (23) being arranged on the fixed block (22) for allowing the mounting rod (17) to pass through, and force application rollers (24) being symmetrically arranged on the fixed block (22).

2. An online torque calibration device according to claim 1, characterized in that: The force-applying driving assembly comprises a sub-gear (14), a servo motor (15) and a main gear (16). The calibration platform (1) is provided with a servo motor (15), the servo motor (15) is connected to the main gear (16), and the main gear (16) is meshed with a sub-gear (14) fixed on the rotating ring (13).

3. The online torque calibration device according to claim 1, characterized in that: The force-applying roller (24) is sleeved with a rubber pad (25).

4. An online torque calibration device according to claim 3, characterized in that: The upper surface edge of the fixing block (22) is provided with a rubber layer.

5. The online torque calibration device according to claim 1, characterized in that: The electric push rod (21) is provided with a distance sensor (26) for real-time detection of the distance between the electric push rod (21) and the fixed block (22).

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