Torque calibration tool

Abstract

The utility model discloses a torque calibration tool, which comprises a mounting seat, a torque calibration device and an intelligent digital display instrument, the mounting seat is arranged on a mounting plate, and the torque calibration device is fixedly mounted on the mounting seat and is arranged opposite to a locking and unlocking gun head; when the locking and unlocking gun head moves to the calibration position, the torque calibration device is suitable for being assembled with the locking and unlocking gun head in a matched mode to conduct torque calibration, and the intelligent digital display instrument is electrically connected with the torque calibration device and used for displaying a torque calibration value. Therefore, the whole calibration process can be completed by one person, the calibration process is simple and convenient, manpower is saved, meanwhile, as the torque calibration device is fixed, the influence of external shaking on torque calibration is reduced, and the calibration accuracy is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to torque calibration technical field especially relates to a torque calibration frock. BACKGROUND

[0002] With the rapid development of new energy automobile industry, the battery swap technology has made sufficient progress. Compared with the traditional charging mode, the battery swap mode has the characteristics of short battery swap time, high operation efficiency, long battery life and low construction difficulty of battery swap station. Therefore, for the attributes of high retention and high travel rate of passenger cars, the battery swap mode has great advantages in energy supply and travel rate.

[0003] The common battery swap device in the market will calibrate the battery swap unlocking gun head at intervals to ensure that the unlocking gun head can apply normal unlocking torque in the battery swap process, thereby ensuring the battery swap success rate of the battery pack and the normal operation of the battery swap device. However, most of the current battery swap devices usually use manual torque wrench for manual calibration. Manual calibration requires one person to hold the manual torque wrench and the other person to operate the unlocking gun head to rotate. The calibration is relatively cumbersome, causing waste of manpower. At the same time, during the calibration process, the torque wrench held by the hand is easy to shake slightly, which will also cause the calibration data to be inaccurate. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving one of the technical problems existing in the prior art. To this end, the utility model provides a torque calibration frock. When the unlocking gun head needs to be calibrated, the torque calibration device is directly installed on the mounting plate through the mounting seat, the torque calibration device is arranged opposite to the unlocking gun head, and then the unlocking gun head is driven to move to the calibration position to be matched and assembled with the torque calibration device. When the unlocking gun head applies unlocking torque to the torque calibration device, the torque calibration device can calibrate the torque received and display the torque calibration value through the intelligent digital display instrument. Thus, the whole calibration process can be completed by one person, the calibration process is simple and convenient, and the manpower is saved. At the same time, since the torque calibration device is fixed, the influence of external shaking on the torque calibration is reduced, which is beneficial to improve the accuracy of calibration.

[0005] To achieve the above purpose, the utility model embodiment provides a torque calibration frock. The torque calibration frock is used for torque calibration of the unlocking gun head of the battery swap device. The unlocking gun head can be moved to the calibration position along the thickness direction of the mounting plate of the battery swap device. The torque calibration frock comprises:

[0006] The mounting seat is arranged on the mounting plate.

[0007] The torque calibration device is fixedly installed on the mounting seat and is arranged opposite to the unlocking gun head, and the torque calibration device is adapted to be assembled with the unlocking gun head to calibrate the torque when the unlocking gun head moves to the calibration position.

[0008] The intelligent digital display instrument is electrically connected with the torque calibration device, and is used for displaying the torque calibration value.

[0009] According to the torque calibration tool, when the unlocking gun head needs to be calibrated, the torque calibration device is directly installed on the mounting plate through the mounting seat, the torque calibration device is arranged opposite to the unlocking gun head, then the unlocking gun head is driven to move to the calibration position to be assembled with the torque calibration device, when the unlocking gun head applies the unlocking torque to the torque calibration device, the torque calibration device can calibrate the torque, and the torque calibration value is displayed through the intelligent digital display instrument. Therefore, the whole calibration process can be completed by one person, the calibration process is simple and convenient, and manpower is saved. Meanwhile, since the torque calibration device is fixed, the influence of external shaking on the torque calibration is reduced, and the accuracy of the calibration is improved.

[0010] According to an embodiment of the present application, the torque calibration device comprises a torque joint and a torque sensor, the torque joint is connected with the torque sensor, when the unlocking gun head moves to the calibration position, the unlocking gun head is adapted to be assembled with the torque joint, the torque sensor calibrates the torque of the unlocking gun head through the torque joint, and the torque sensor is also adapted to be electrically connected with the intelligent digital display instrument.

[0011] According to an embodiment of the present application, the torque joint is embedded in the torque sensor.

[0012] According to an embodiment of the present application, the torque calibration device further comprises a flange, and the torque sensor is fixedly installed on the mounting seat through the flange.

[0013] According to an embodiment of the present application, the torque joint, the torque sensor and the flange are coaxially arranged.

[0014] According to an embodiment of the present application, the mounting seat forms a mounting space opposite to the unlocking gun head, and the torque calibration device is arranged in the mounting space.

[0015] According to an embodiment of the present application, the mounting seat comprises a first support, a second support and a connecting piece, the first support and the second support are opposite and spaced apart, and the connecting piece is connected between the first support and the second support to jointly define the mounting space.

[0016] According to one embodiment of the present application, the first supporting member and the second supporting member are provided with mounting portions, and the first supporting member and the second supporting member are fixedly connected with the mounting seat through the mounting portions.

[0017] According to one embodiment of the present application, the mounting seat is an integral forming member.

[0018] According to one embodiment of the present application, the intelligent digital display instrument further comprises an alarm module, which is used for alarming when the torque calibration value reaches the preset value.

[0019] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic view of a torque calibration tool according to one embodiment of the present application;

[0021] Figure 2 is a schematic view of a torque calibration device according to one embodiment of the present application;

[0022] Figure 3 is an assembly schematic view of a torque calibration tool and a battery replacing device according to one embodiment of the present application;

[0023] Figure 4 is Figure 3 is a partial enlarged view of A in FIG.

[0024] Figure 5 is an assembly schematic view of a torque calibration tool and a battery replacing device according to another embodiment of the present application;

[0025] Figure 6 is Figure 5 is a partial enlarged view of B in FIG.

[0026] REFERENCE SIGNS:

[0027] Torque calibration tool 100;

[0028] Mounting seat 1; mounting space 11; first supporting member 12; second supporting member 13; connecting member 14; mounting portion 15;

[0029] Torque calibration device 2; torque joint 21; torque sensor 22; flange plate 23;

[0030] Battery replacing device 200; unlocking gun head 201; mounting plate 202; moving plate 203; electric push rod 204; guide rail 205; sliding block 206; driving slope 2061; driving cam 207; guide rod 208; sleeve 209; DETAILED DESCRIPTION

[0031] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the present application, and are not to be understood as limiting the present application.

[0032] The torque calibration tool 100 proposed by the embodiments of the present application is described below with reference to the drawings.

[0033] It should be noted that the torque calibration tool 100 can be applied to the unlocking gun head 201 of the battery replacement device 200, but the present application is not limited thereto, and the torque calibration tool 100 can also be applied to other equipment that needs to be calibrated. The present application takes the torque calibration tool 100 applied to the unlocking gun head 201 of the battery replacement device 200 as an example for description.

[0034] Specifically, as shown in Figures 3-6 The battery replacement device 200 includes a mounting plate 202 and an unlocking gun head 201, the mounting plate 202 has a avoiding hole, and the unlocking gun head 201 can move relative to the mounting plate 202 along the thickness direction of the mounting plate 202, so that the unlocking gun head 201 can extend above the mounting plate 202 through the avoiding hole or retract below the mounting plate 202 through the avoiding hole.

[0035] As shown in Figures 1-6 The torque calibration tool 100 according to the embodiments of the present application includes a mounting seat 1, a torque calibration device 2 and an intelligent digital display instrument, the mounting seat 1 is arranged on the mounting plate 202, the torque calibration device 2 is fixedly installed on the mounting seat 1 and is arranged opposite to the unlocking gun head 201, and the torque calibration device 2 is adapted to be assembled with the unlocking gun head 201 to calibrate the torque when the unlocking gun head 201 moves to the calibration position. The intelligent digital display instrument is electrically connected with the torque calibration device 2, and the intelligent digital display instrument is used for displaying the torque calibration value.

[0036] Specifically, before calibrating the torque of the unlocking gun head 201 of the battery replacement device 200, as shown in Figure 5 and Figure 6As shown, the drive unlocking gun head 201 is retracted below the mounting plate 202 through the avoidance hole to prevent interference with the torque calibration tool 100 during installation. Before installing the torque calibration tool 100 to the mounting plate 202, the torque calibration device 2 is first fixedly installed on the mounting seat 1, and then the mounting seat 1 is fixedly installed on the mounting plate 202. During installation, the torque calibration device 2 is arranged opposite to the unlocking gun head 201. It can be understood that the installation position of the mounting seat 1 relative to the mounting plate 202 and the installation position of the torque calibration device 2 relative to the mounting seat 1 can be adjusted to ensure that the torque calibration device 2 is opposite to the unlocking gun head 201. Then the intelligent digital display instrument is electrically connected to the torque calibration device 2 through wiring.

[0037] When the torque of the unlocking gun head 201 of the battery swap device 200 needs to be calibrated, as shown in Figure 3 and Figure 4 As shown, the drive unlocking gun head 201 is retracted below the mounting plate 202 through the avoidance hole to prevent interference with the torque calibration tool 100 during installation. Before installing the torque calibration tool 100 to the mounting plate 202, the torque calibration device 2 is first fixedly installed on the mounting seat 1, and then the mounting seat 1 is fixedly installed on the mounting plate 202. During installation, the torque calibration device 2 is arranged opposite to the unlocking gun head 201. It can be understood that the installation position of the mounting seat 1 relative to the mounting plate 202 and the installation position of the torque calibration device 2 relative to the mounting seat 1 can be adjusted to ensure that the torque calibration device 2 is opposite to the unlocking gun head 201. Then the intelligent digital display instrument is electrically connected to the torque calibration device 2 through wiring.

[0038] It can be understood that the torque calibration tool 100 can only calibrate one unlocking gun head 201 at a time. When the current unlocking gun head 201 is calibrated, the torque calibration tool 100 can be disassembled from the mounting plate 202, and the above-mentioned supplementary measurement can be repeated. In this way, the torque calibration tool 100 is easy to disassemble and can be reused, which is beneficial to save costs.

[0039] According to the torque calibration tool 100 of the embodiment of the present invention, when it is necessary to perform torque calibration on the locking and unlocking gun head 201, the torque calibration device 2 is directly mounted on the mounting plate 202 through the mounting seat 1, while ensuring that the torque calibration device 2 is arranged opposite to the locking and unlocking gun head 201. Then, the locking and unlocking gun head 201 is driven to move to the calibration position so that it can be assembled with the torque calibration device 2. When the locking and unlocking gun head 201 applies the locking and unlocking torque to the torque calibration device 2, the torque calibration device 2 can calibrate the torque received and display the torque calibration value through the intelligent digital display. As a result, the entire calibration process can be completed by a single person, the calibration process is simple and convenient, and manpower is saved. At the same time, since the torque calibration device 2 is fixed, the influence of external shaking on the torque calibration is reduced, which is conducive to improving the accuracy of the calibration.

[0040] It should be noted that when driving the locking and unlocking gun head 201 to move relative to the mounting plate 202 along the thickness direction of the mounting plate 202, a variety of driving methods can be used, such as hydraulic drive, motor drive, pneumatic drive, etc. In some embodiments of the present application, in order to enable those skilled in the art to better understand the present solution, such as Figures 3-6 As shown, the battery exchange device 200 also includes: a moving plate 203, the moving plate 203 is arranged below the mounting plate 202, the locking and unlocking gun head 201 is fixedly installed on the moving plate 203, and the lower surface of the moving plate 203 is provided with an electric push rod 204, a guide rail 205 and a slider 206, wherein the slider 206 is arranged on the guide rail 205 and can move horizontally left and right along the extension direction of the guide rail 205, the electric push rod 204 is connected to the slider 206 in a transmission manner, and the electric push rod 204 can push the slider 206 on the guide rail 2 05 slides up, the slider 206 is provided with a driving inclined surface 2061, a fixed plate is provided below the mounting plate 202, and a driving cam 207 is provided on the fixed plate. The driving cam 207 is used to support the slider 206 and abuts against the driving inclined surface 2061 of the slider 206. The mounting plate 202 is also provided with a guide rod 208, and the movable plate 203 is provided with a sleeve 209 that cooperates with the guide rod 208. The guide rod 208 and the sleeve 209 can move relatively up and down along the thickness direction of the mounting plate 202. With this arrangement, refer to Figure 3 and Figure 5 As shown, when the electric push rod 204 drives the slider 206 to move to the left relative to the guide rail 205, under the interaction of the driving inclined surface 2061 and the driving cam 207, the movable plate 203 is lifted upward as a whole, so that the locking and unlocking gun head 201 moves upward along with the movable plate 203, so that the locking and unlocking gun head 201 extends out from above the mounting plate 202 through the avoidance hole until it reaches the calibration position, that is, the locking and unlocking gun head 201 and the torque calibration device 2 are assembled with each other.

[0041] In some embodiments of the present invention, Figure 1 、 Figure 2 、Figure 4 and Figure 6 As shown in the figure, the torque calibration device 2 comprises a torque joint 21 and a torque sensor 22, the torque joint 21 is connected with the torque sensor 22, the unlocking gun head 201 is adapted to be matched and assembled with the torque joint 21 when the unlocking gun head 201 moves to the calibration position, the torque sensor 22 calibrates the torque of the unlocking gun head 201 through the torque joint 21, and the torque sensor 22 is also adapted to be electrically connected with the intelligent digital display instrument.

[0042] Specifically, when the torque calibration tool 100 is installed on the mounting plate 202 of the battery replacing device 200, the torque joint 21 of the torque calibration device 2 is opposite to the unlocking gun head 201, when it is necessary to calibrate the torque of the unlocking gun head 201 of the battery replacing device 200, the unlocking gun head 201 is driven to move to the calibration position, so that the unlocking gun head 201 can be matched and assembled with the torque joint 21, for example, the unlocking gun head 201 has a regular hexagonal column, and the torque joint 21 has a regular hexagonal hole matched in size with the regular hexagonal column, when the unlocking gun head 201 can be matched and assembled with the torque joint 21, the regular hexagonal column is inserted into the regular hexagonal hole, so that the regular hexagonal column is clamped in the regular hexagonal hole, when the unlocking gun head 201 applies an unlocking torque to the torque joint 21, the torque sensor 22 can calibrate the torque applied to the torque joint 21 and send the calibration result to the intelligent digital display instrument, and the intelligent digital display instrument displays the torque calibration value in real time, the whole calibration process is simple and reliable, and it is convenient for the calibration personnel to obtain the calibration result, and the calibration efficiency is improved.

[0043] It should be noted that the unlocking gun head 201 is provided with a floating spring, when the unlocking gun head 201 is matched and assembled with the torque joint 21, the servo motor in the unlocking gun head 201 is slowly started, so that the unlocking gun head 201 adjusts the position in the rotating process to be clamped in the torque joint 21, and the docking efficiency of the unlocking gun head 201 and the torque joint 21 is improved.

[0044] In some embodiments of the utility model, the torque joint 21 is embedded in the torque sensor 22. That is, the torque joint 21 can be directly embedded in the torque sensor 22, when torque calibration is needed, the torque joint 21 is embedded in the torque sensor 22, and at least the torque joint 21 is located in the torque sensor 22, so that the unlocking gun head 201 and the torque joint 21 are matched and assembled with each other, when the calibration is completed, the torque joint 21 can also be disassembled from the torque sensor 22, in this way, through the embedded design, the installation and disassembly between the torque joint 21 and the torque sensor 22 are facilitated.

[0045] In some embodiments of the utility model, as shown in the figure, Figure 1 , Figure 2 , Figure 4 andFigure 6 As shown in the drawings, the torque calibration device 2 further comprises a flange plate 23, and the torque sensor 22 is fixedly installed on the mounting seat 1 through the flange plate 23. That is, the torque sensor 22 is fixedly connected with the mounting seat 1 through the flange plate 23, wherein the torque sensor 22 is fixedly installed on the flange plate 23, the flange plate 23 has a mounting hole, and the flange plate 23 can be fixedly installed on the mounting seat 1 through a bolt, and the bolt connection also facilitates disassembly and replacement of the torque sensor 22, so as to meet the calibration requirements of different torques.

[0046] In some embodiments of the utility model, as shown in Figure 1 、 Figure 2 、 Figure 4 And Figure 6 As shown, the torque joint 21, the torque sensor 22 and the flange plate 23 are coaxially arranged. That is, the torque joint 21, the torque sensor 22 and the flange plate 23 are arranged on the same axis, so that when the locking and unlocking gun head 201 applies a locking and unlocking torque to the torque joint 21, the torque received by the torque joint 21 can be more accurately transmitted to the torque sensor 22, and the flange plate 23 can provide more stable support for the torque sensor 22, which is conducive to further improving the accuracy of torque calibration.

[0047] In some embodiments of the utility model, as shown in Figure 1 、 Figures 3-6 As shown, the mounting seat 1 forms a mounting space 11 opposite to the locking and unlocking gun head 201, and the torque calibration device 2 is arranged in the mounting space 11. Specifically, the mounting seat 1 forms a mounting space 11 opposite to the locking and unlocking gun head 201 below, and the mounting seat 1 is equivalent to being arranged above the locking and unlocking gun head 201, the torque calibration device 2 is fixedly installed in the mounting space 11, and the torque joint 21 of the torque calibration device 2 is opposite to the locking and unlocking gun head 201, so that the overall structure occupies a smaller space, and the structure is simple and compact, facilitating carrying and installation.

[0048] In some embodiments of the utility model, as shown in Figure 1As shown, the mounting base 1 includes: a first support member 12, a second support member 13 and a connecting member 14, the first support member 12 and the second support member 13 are opposite and spaced apart, and the connecting member 14 is connected between the first support member 12 and the second support member 13 to jointly define the mounting space 11. Specifically, the first support member 12, the second support member 13 and the connecting member 14 can all be constructed as a plate-like structure, and the first support member 12, the second support member 13 and the connecting member 14 form an "X" shape and jointly define the mounting space 11, wherein the torque calibration device 2 is fixedly mounted on the lower surface of the connecting member 14 so that the torque calibration device 2 is directly opposite to the locking and unlocking gun head 201. The "X" shape makes the mounting base 1 stable and has greater support strength, which is conducive to ensuring the stability of the torque calibration device 2, avoiding shaking during the torque calibration process, and is conducive to improving the accuracy of the torque calibration.

[0049] In some embodiments of the present invention, Figure 1 As shown, the first support member 12 and the second support member 13 are both provided with a mounting portion 15, and the first support member 12 and the second support member 13 are fixedly connected to the mounting base 1 through the mounting portion 15. In other words, the mounting base 1 is fixedly connected to the mounting plate 202 through the first support member 12 and the second support member 13. The first support member 12 and the second support member 13 are both provided with a mounting portion 15, and the mounting portion 15 can be configured as a mounting groove. The mounting base 1 is provided with mounting holes corresponding to the mounting grooves. The first support member 12 and the second support member 13 can be fixed to the mounting base 1 through bolt connection, thereby facilitating the disassembly and replacement of the torque calibration tool 100, thereby meeting the torque calibration requirements of different locking and unlocking gun heads 201.

[0050] In some embodiments of the present invention, the mounting base 1 is an integrally formed part. That is, the mounting base 1 can be integrally formed. For example, when the mounting base 1 is made of a plastic material, the mounting base 1 can be integrally injection molded. When the mounting base 1 is made of a metal material, such as iron or copper, the mounting base 1 can be integrally cast. This helps reduce the production cost of the mounting base 1, thereby reducing the production cost of the torque calibration tool 100.

[0051] In some embodiments of the present invention, the intelligent digital display further includes an alarm module, which is configured to sound an alarm when the torque calibration value reaches a preset value. That is, the intelligent digital display further includes an alarm module, which may be, but is not limited to, a sound alarm module, a light alarm module, or the like. When the torque calibration device 2 performs torque calibration on the locking and unlocking gun head 201, if the torque calibration value reaches a preset value, the alarm module will issue a signal alarm, such as an alarm sound, to remind the user that the torque calibration is qualified. If the torque calibration value does not reach the preset value, the alarm module will remind the user that the torque is unqualified, reminding the user that the locking and unlocking torque of the locking and unlocking gun head 201 needs to be readjusted. This helps improve calibration efficiency.

[0052] In the description of the utility model, need understanding is, the term "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" "internal", "external", "clockwise", "counterclockwise", "axial", "radial", "circumferential" The orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it can not be understood as limiting the utility model. In addition, the features limited by "first", "second" can be explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0053] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0054] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0055] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, the scope of the utility model is defined by the claims and its equivalents.

Claims

1. A torque calibration tool (100) characterized by, The torque calibration tool (100) is used for torque calibration of a locking and unlocking gun head (201) of a battery replacing device (200), the locking and unlocking gun head (201) is movable to a calibration position along the thickness direction of a mounting plate (202) of the battery replacing device (200), and the torque calibration tool (100) comprises: a mounting seat (1) arranged on the mounting plate (202); a torque calibration device (2) fixedly arranged on the mounting seat (1) and arranged opposite to the locking and unlocking gun head (201), the torque calibration device (2) is adapted to be assembled with the locking and unlocking gun head (201) to perform torque calibration when the locking and unlocking gun head (201) moves to the calibration position; an intelligent digital display instrument electrically connected with the torque calibration device (2), and used for displaying a torque calibration value.

2. The torque calibration fixture (100) of claim 1, wherein, The torque calibration device (2) comprises a torque joint (21) and a torque sensor (22), the torque joint (21) is connected with the torque sensor (22), the locking and unlocking gun head (201) is adapted to be assembled with the torque joint (21) when the locking and unlocking gun head (201) moves to the calibration position, and the torque sensor (22) performs torque calibration on the locking and unlocking gun head (201) through the torque joint (21), and the torque sensor (22) is also adapted to be electrically connected with the intelligent digital display instrument.

3. The torque calibration tool (100) of claim 2, characterized in that, The torque joint (21) is embedded in the torque sensor (22).

4. The torque calibration tool (100) of claim 2, wherein, The torque calibration device (2) further comprises a flange (23), and the torque sensor (22) is fixedly arranged on the mounting seat (1) through the flange (23).

5. The torque calibration tool (100) of claim 4, wherein, The torque joint (21), the torque sensor (22) and the flange (23) are coaxially arranged.

6. The torque calibration fixture (100) of claim 1, wherein, The mounting seat (1) is formed with a mounting space (11) opposite to the locking and unlocking gun head (201), and the torque calibration device (2) is arranged in the mounting space (11).

7. The torque calibration tool (100) of claim 6, characterized in that, The mounting seat (1) comprises a first support (12), a second support (13) and a connecting piece (14), the first support (12) and the second support (13) are opposite and spaced apart, and the connecting piece (14) is connected between the first support (12) and the second support (13) to jointly define the mounting space (11).

8. The torque calibration fixture (100) of claim 7, characterized in that, The first support (12) and the second support (13) are each provided with a mounting portion (15), and the first support (12) and the second support (13) are fixedly connected with the mounting seat (1) through the mounting portion (15).

9. The torque calibration fixture (100) of claim 1, wherein, The mounting seat (1) is an integral molding.

10. The torque calibration fixture (100) of claim 1, wherein, The intelligent digital display instrument further comprises an alarm module, and the alarm module is used for alarming when the torque calibration value reaches a preset value.

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