Clamping mechanism, electric screwdriver assembly and nut locking device

Abstract

The utility model provides a clamping mechanism, electric screwdriver assembly and nut locking device, the clamping mechanism includes: a base body, a plurality of clamping parts are provided, a plurality of clamping parts are distributed at intervals along the circumferential direction of the base body, each clamping part is provided with a driving end and a clamping end which are oppositely arranged, and the middle part of the clamping part is rotatably arranged on the base body; and the elastic parts are arranged among the multiple clamping parts, the elastic parts are connected with the driving ends of the multiple clamping parts correspondingly, and the elastic parts provide acting force away from each other for the multiple driving ends correspondingly, so that the clamping ends of the multiple clamping parts get close to each other to clamp the nut. By means of the scheme, the problem that in the prior art, the labor intensity is large when the nut is pre-screwed manually can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of nut locking, and in particular to a clamping mechanism, an electric screwdriver assembly and a nut locking device. Background Art

[0002] In modern manufacturing, the assembly of fasteners is one of the key links in the product assembly process. As one of the common fasteners, the locking quality of nuts is directly related to the stability and safety of the product. At present, most factories usually use manual pre-tightening of nuts in the process of locking nuts of products. However, manual pre-tightening of nuts is labor-intensive. Utility Model Content

[0003] The utility model provides a clamping mechanism, an electric screwdriver assembly and a nut locking device to solve the problem of high labor intensity in the prior art of manually pre-tightening nuts.

[0004] According to one aspect of the utility model, a clamping mechanism is provided, which includes: a base body, provided with a plurality of clamping parts, the plurality of clamping parts are spaced apart along the circumference of the base body, the clamping parts have a driving end and a clamping end that are relatively arranged, and the middle part of the clamping part is rotatably arranged on the base body; an elastic part, arranged between the plurality of clamping parts, the elastic parts are respectively connected to the driving ends of the plurality of clamping parts, and the elastic parts respectively provide a force to move away from each other to make the clamping ends of the plurality of clamping parts approach each other to clamp the nut.

[0005] Furthermore, the base has a housing portion for accommodating the nut, a plurality of clamping portions are annularly arranged on the outer periphery of the housing portion, a plurality of first avoidance grooves are arranged on the side wall of the housing portion, the plurality of first avoidance grooves are spaced apart along the circumference of the housing portion, a clamping end is respectively arranged in each first avoidance groove, and the clamping end can be embedded in the housing portion or removed from the housing portion.

[0006] Furthermore, the accommodating portion includes a nut accommodating section and a screw accommodating section which are connected in sequence along the axial direction, the cross-sectional area of ​​the nut accommodating section is larger than the cross-sectional area of ​​the screw accommodating section, the nut accommodating section is arranged on the end surface of the base, and the first avoidance groove is connected to the nut accommodating section.

[0007] Furthermore, a second avoidance groove is also provided on the side wall of the base body, each first avoidance groove is connected to a second avoidance groove, the second avoidance groove extends along the extension direction of the base body, and the second avoidance groove is used to avoid the clamping portion.

[0008] Furthermore, the inner side wall of the clamping end has a guide surface and a clamping surface that are connected to each other. The clamping surface and the guide surface are distributed along the extension direction of the clamping portion. The clamping surface is arranged close to the driving end. Along the direction from the guide surface to the clamping surface, the guide surface is inclined toward the driving end.

[0009] According to another aspect of the utility model, an electric screwdriver assembly is provided, which includes: an electric screwdriver body, which is provided with an output shaft; the above-mentioned clamping mechanism, wherein the base of the clamping mechanism is arranged on the output shaft, and the output shaft is drivingly connected to the base to rotate the base.

[0010] Furthermore, the electric screwdriver assembly also includes: a floating joint, which is arranged between the output shaft and the base, and the base is movably arranged on the output shaft through the floating joint.

[0011] Furthermore, the electric screwdriver assembly also includes: a sensor, which is arranged on the electric screwdriver body, and the sensor is used to detect the relative position between the accommodating portion of the clamping mechanism and the nut. The sensor is electrically connected to the electric screwdriver body to control the start and stop of the electric screwdriver body.

[0012] According to another aspect of the utility model, a nut locking device is provided, which includes: a workbench; a feeding assembly, which is arranged on the workbench and is used to provide nuts; a loading assembly, which is arranged on the workbench and is installed with bolts to be locked; a mounting frame, which is arranged on the workbench and reciprocates between the feeding assembly and the loading assembly; the above-mentioned electric screwdriver assembly, which is liftably arranged on the mounting frame, and the clamping mechanism of the electric screwdriver assembly is located above the feeding assembly and the loading assembly.

[0013] Furthermore, the nut locking device also includes: a first driving unit, which is arranged on the workbench and is driven and connected to the mounting frame to move the mounting frame; a camera unit, which is arranged on the electric screwdriver assembly and is used to photograph the position of the bolt to be locked; a control system, in which the camera unit and the first driving unit are electrically connected to the control system respectively, and the control system controls the start and stop of the first driving unit.

[0014] Furthermore, the nut locking device also includes: a buffer portion, which is arranged between the mounting frame and the electric screwdriver body, and the buffer portion is used to buffer the lifting and lowering of the electric screwdriver body.

[0015] Furthermore, the loading assembly is movably arranged on the workbench, the loading assembly has an initial position and a working position which are relatively arranged, the working position is close to the feeding assembly, and the mounting frame reciprocates in the direction from the working position to the feeding assembly.

[0016] Furthermore, two loading assemblies are provided, the feeding assembly is located between the two loading assemblies, the moving directions of the two loading assemblies are the same, and the initial positions of the two loading assemblies are located on the same side of the feeding assembly.

[0017] By applying the technical solution of the utility model, when the nut is pre-tightened, under the action of the elastic part, the clamping ends of the multiple clamping parts are close to each other, and the multiple clamping ends cooperate to clamp the nut. After that, the base is rotated, and the rotation of the base drives the nut to rotate, so as to realize the pre-tightening of the nut. Compared with the traditional method of manually pre-tightening the nut by the staff, the setting of this solution can ensure that the operator maintains a more comfortable posture during the operation, and can reduce the labor intensity of the operator after a long period of operation, and can accurately control the torque applied to the nut, avoiding over-tightening or under-tightening caused by manual operation, and reducing the extra labor required for adjusting the torque. Moreover, in this solution, the clamping part can be driven only by the elastic part, so that the multiple clamping ends can clamp the nut, and no electricity or gas control is required, the manufacturing cost is low, and maintenance is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 An exploded structural perspective view of a clamping mechanism provided by an embodiment of the utility model is shown;

[0020] Figure 2 It shows a structural schematic diagram of a clamping mechanism provided by an embodiment of the utility model from a first viewing angle;

[0021] Figure 3 Shows Figure 2 A cross-sectional view of a clamping mechanism from one perspective;

[0022] Figure 4 A schematic structural diagram of a clamping mechanism provided by an embodiment of the utility model from a second viewing angle is shown;

[0023] Figure 5 The utility model embodiment provides Figure 4 A cross-sectional view of a clamping mechanism from one perspective;

[0024] Figure 6 It shows a schematic structural diagram of a clamping portion provided by an embodiment of the utility model from a first viewing angle;

[0025] Figure 7 A schematic structural diagram of a second viewing angle of a clamping portion provided by an embodiment of the utility model is shown;

[0026] Figure 8 A schematic structural diagram of a clamping portion provided by an embodiment of the utility model from a third viewing angle is shown;

[0027] Fig. 9It shows a schematic structural diagram of the electric screwdriver assembly provided by an embodiment of the utility model from a first viewing angle;

[0028] Fig.10 A schematic structural diagram of the electric screwdriver assembly provided by an embodiment of the utility model from a second viewing angle is shown;

[0029] Fig.11 A schematic structural diagram of the electric screwdriver assembly provided by an embodiment of the utility model from a third viewing angle is shown;

[0030] Fig.12 A partial structural schematic diagram of a nut locking device provided in an embodiment of the utility model is shown;

[0031] Fig.13 A structural schematic diagram of a nut locking device provided in an embodiment of the utility model is shown.

[0032] The above drawings include the following reference numerals:

[0033] 10. base body; 11. rotating shaft;

[0034] 101, accommodating portion; 1011, nut accommodating section; 1012, screw accommodating section;

[0035] 102. first avoidance groove; 103. second avoidance groove;

[0036] 20. Clamping part;

[0037] 201, driving end; 202, clamping end; 2021, guiding surface; 2022, clamping surface;

[0038] 21. Clamping rod; 22. Clamping block;

[0039] 30. Elastic part;

[0040] 40. Electric batch batch body;

[0041] 50. Floating joint;

[0042] 61. Rotation origin detection sensor; 62. Floating height detection sensor;

[0043] 01. Workbench; 02. Feeding assembly; 03. Loading assembly;

[0044] 04, mounting frame; 041, mounting vertical plate; 042, first stopper; 043, second stopper;

[0045] 05. First driving unit; 06. Buffer unit; 07. Protective cover. DETAILED DESCRIPTION

[0046] 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. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. 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.

[0047] like Figure 1 As shown, the embodiment of the utility model provides a clamping mechanism, which includes a base 10, a clamping portion 20 and an elastic portion 30. Among them, a plurality of clamping portions 20 are provided, and the plurality of clamping portions 20 are spaced apart along the circumference of the base 10, and the clamping portion 20 has a driving end 201 and a clamping end 202 that are arranged opposite to each other, and the middle part of the clamping portion 20 is rotatably arranged on the base 10; the elastic portion 30 is arranged between the plurality of clamping portions 20, and the elastic portion 30 is respectively connected to the driving ends 201 of the plurality of clamping portions 20, and the elastic portion 30 respectively provides a force to move away from each other to make the clamping ends 202 of the plurality of clamping portions 20 approach each other to clamp the nut.

[0048] By applying the technical solution of the utility model, when the nut is pre-tightened, under the action of the elastic part 30, the clamping ends 202 of the multiple clamping parts 20 are close to each other, and the multiple clamping ends cooperate to clamp the nut. After that, the base 10 is rotated, and the rotation of the base 10 drives the nut to rotate, so as to realize the pre-tightening of the nut. Compared with the traditional method of manually pre-tightening the nut by the staff, the setting of this solution can ensure that the operator maintains a more comfortable posture during the operation, and can reduce the labor intensity of the operator after a long time of operation, and can accurately control the torque applied to the nut, avoiding over-tightening or under-tightening caused by manual operation, and reducing the extra labor required for adjusting the torque. Moreover, in this solution, the clamping part 20 can be driven only by the elastic part, so that the multiple clamping ends 202 can clamp the nut, and no electricity and gas control are required, the manufacturing cost is low, and the maintenance is convenient.

[0049] like Figure 2 and Figure 3As shown, further, the base 10 has a receiving portion 101, the receiving portion 101 is used to receive the nut, a plurality of clamping portions 20 are annularly arranged on the outer periphery of the receiving portion 101, a plurality of first avoidance grooves 102 are arranged on the side wall of the receiving portion 101, the plurality of first avoidance grooves 102 are spaced along the circumference of the receiving portion 101, and a clamping end 202 is arranged in each first avoidance groove 102, and the clamping end 202 can be embedded in the receiving portion 101 or removed from the receiving portion 101. The arrangement of the receiving portion 101 can realize the pre-positioning of the nut, help ensure the correct initial position of the nut, and facilitate the subsequent pre-tightening operation.

[0050] In the embodiment of the present solution, a clamping end 202 is correspondingly arranged in each first avoidance groove 102. The plurality of first avoidance grooves 102 are distributed at intervals along the circumference of the accommodating portion 101. Such a configuration enables the plurality of clamping ends 202 to provide uniform clamping force, ensuring that the nut is subjected to balanced pressure during the pre-tightening process.

[0051] Specifically, the accommodating portion 101 includes a nut accommodating section 1011 and a screw accommodating section 1012 which are connected in sequence along the axial direction. The cross-sectional area of ​​the nut accommodating section 1011 is larger than the cross-sectional area of ​​the screw accommodating section 1012. The nut accommodating section 1011 is arranged on the end surface of the base 10, and the first avoidance groove 102 is connected to the nut accommodating section 1011. The above arrangement allows the screw portion adapted to the nut to be inserted into the screw accommodating section 1012, allowing the nut to be tightened to different depths. This design enables the device to adapt to screws of different lengths.

[0052] Furthermore, in the embodiment of the present solution, the nut accommodating section 1011 includes a nut accommodating groove, and the screw accommodating section includes a screw accommodating groove, wherein the contour size of the nut accommodating groove is adapted to the outer contour of the nut, and when the nut is tightened, the end face of the nut can abut against the stepped surface between the nut accommodating groove and the screw accommodating groove. Such a setting helps to prevent the nut from rotating unnecessarily on the screw, ensures that the nut is tightened in a predetermined direction, and improves the consistency of pre-tightening.

[0053] like Figures 2 to 5 As shown, further, a second avoidance groove 103 is provided on the side wall of the base 10, each first avoidance groove 102 is connected to a second avoidance groove 103, the second avoidance groove 103 extends along the extension direction of the base 10, and the second avoidance groove 103 is used to avoid the clamping part 20. The existence of the second avoidance groove 103 provides additional space for the clamping part 20, so that the clamping part can be completely avoided when not in use, reducing space occupation and improving the compactness of the structure of the device when not in use.

[0054] In the embodiment of the present solution, the base 10 is generally a cylindrical structure, and the clamping portion 20 is generally a rod-shaped structure. When the clamping portion 20 is embedded in the second avoidance groove 103, the base 10 and the plurality of clamping portions 20 cooperate to form a complete cylindrical structure.

[0055] This solution does not limit the specific number of the clamping parts 20.

[0056] In some embodiments of the present solution, three or more clamping parts 20 are provided.

[0057] In the embodiment of this solution, two clamping parts 20 are provided, and the two clamping parts 20 are arranged opposite to each other. The nut receiving groove is provided on the end surface of the first end of the base 10, and the ends of the two second avoidance grooves 103 away from the nut receiving groove are connected to each other. Such an arrangement can improve the smoothness of the rotation of the clamping part 20.

[0058] like Figures 1 to 3 As shown, specifically, the device also includes a rotating shaft 11, two rotating shafts 11 are provided, the rotating shafts 11 and the clamping parts 20 are arranged one by one, the extension direction of the rotating shaft 11 is perpendicular to the extension direction of the clamping part 20, the rotating shaft 11 is arranged through the second avoidance groove 103, and the rotating shaft 11 is arranged through the clamping part 20, and the clamping part 20 is rotatably arranged on the base 10 through the rotating shaft 11.

[0059] In the embodiment of this solution, the rotating shaft 11 is detachably connected to the base 10 .

[0060] Specifically, the rotating shaft 11 is threadedly connected to the base 10 . This arrangement can facilitate the assembly of the rotating shaft 11 , the clamping portion 20 and the base 10 .

[0061] like Figures 6 to 8 As shown, further, the inner side wall of the clamping end 202 has a guide surface 2021 and a clamping surface 2022 connected to each other, and the clamping surface 2022 and the guide surface 2021 are distributed along the extension direction of the clamping portion 20, and the clamping surface 2022 is arranged close to the driving end 201, and along the direction from the guide surface 2021 to the clamping surface 2022, the guide surface 2021 is inclined in the direction of the driving end 201. The guide surface 2021 provides an inclined guide for the clamping end 202, which helps to ensure that the clamping end 202 accurately enters and exits the nut receiving groove along a predetermined path during the movement, and this design makes the clamping action smoother, which helps to reduce the time required for clamping and releasing the nut, thereby improving the overall operating efficiency. The clamping surface 2022 is arranged close to the driving end 201, which helps to provide a stable and effective clamping force when the clamping end reaches the nut.

[0062] In the embodiment of the present solution, the clamping part 20 includes a clamping rod 21 and a clamping block 22, wherein the clamping block 22 is arranged on the inner side of one end of the clamping rod 21. It can be understood that the inner side of the clamping rod 21 refers to the side of the two clamping rods 21 that are arranged opposite to each other. The clamping block 22 forms a clamping end, and the end of the clamping rod 21 away from the clamping block 22 forms a driving end. The guide surface 2021 and the clamping surface 2022 are respectively arranged on the clamping block 22. Such an arrangement can facilitate the formation of the guide surface 2021 and the clamping surface 2022.

[0063] like Figure 3 As shown, further, the elastic part 30 includes a spring, and the inner end surface of the driving end of the two clamping rods 21 is respectively provided with a mounting groove. It is worth noting that the inner end surface of the driving end of the clamping rod 21 refers to the opposite side of the driving end of the two clamping rods 21. The two ends of the spring are respectively embedded in the two mounting grooves. Such a configuration can facilitate the installation of the spring and the two clamping rods 21.

[0064] like Figures 9 to 11 As shown, the embodiment of the utility model also provides an electric screwdriver assembly, which includes: an electric screwdriver body 40 and the above-mentioned clamping mechanism. The electric screwdriver body 40 is provided with an output shaft; the base 10 of the clamping mechanism is arranged on the output shaft, and the output shaft is drivingly connected to the base 10 to rotate the base 10. Such an arrangement combines the automation characteristics of the electric screwdriver body 40 with the precise control of the clamping mechanism, realizes the automation of the nut tightening process, and reduces manual intervention. The automated tightening function of the electric screwdriver assembly can significantly improve production efficiency, especially in production lines that need to quickly tighten a large number of nuts.

[0065] Furthermore, the electric screwdriver assembly further includes a floating joint 50, which is disposed between the output shaft and the base 10, and the base 10 is movably disposed on the output shaft through the floating joint 50. The floating joint 50 can compensate for a slight deviation of the base 10 in the axial direction, ensuring that the contact between the base 10 and the nut is always accurate, thereby improving the accuracy of the tightening operation. During the tightening process, the floating joint 50 can also absorb the vibration and impact generated by the tightening force, thereby reducing damage to the electric screwdriver body 40 and the base 10.

[0066] Furthermore, the electric screwdriver assembly also includes a sensor, which is arranged on the electric screwdriver body 40, and is used to detect the relative position between the receiving portion 101 of the clamping mechanism and the nut, and the sensor is electrically connected to the electric screwdriver body 40 to control the start and stop of the electric screwdriver body 40. The sensor can detect the position of the nut in real time, ensuring that the nut is accurately placed in the predetermined position before tightening, and can avoid tightening quality problems caused by inaccurate position.

[0067] In some embodiments of the present solution, the sensor includes a rotation origin detection sensor 61. With this arrangement, the origin position of the nut can be corrected to ensure the coaxiality between the angle of the nut and the screw to be locked.

[0068] In some embodiments of the present solution, the sensor includes a floating height detection sensor 62, and the floating height detection sensor 62 is used to detect the locking depth of the nut, so as to facilitate the control of the locking depth of the nut.

[0069] In an embodiment of the present scheme, the electric screwdriver assembly also includes a connecting frame and a bearing, wherein the connecting frame is arranged on the electric screwdriver body 40, the outer ring of the bearing is arranged on the connecting frame, and the inner ring of the bearing is sleeved on the outside of the floating joint 50 and connected to the floating joint 50. Such an arrangement can support the floating joint 50 and improve the stability of the floating joint 50.

[0070] like Fig.12 As shown, the embodiment of the utility model also provides a nut locking device, which includes a workbench 01, a feeding assembly 02, a loading assembly 03, a mounting frame 04 and the above-mentioned electric screwdriver assembly. Among them, the feeding assembly 02 is arranged on the workbench 01, and the feeding assembly 02 is used to provide nuts; the loading assembly 03 is arranged on the workbench 01, and the loading assembly 03 is installed with bolts to be locked; the mounting frame 04 is arranged on the workbench 01, and the mounting frame 04 reciprocates between the feeding assembly 02 and the loading assembly 03; the electric screwdriver assembly is arranged on the mounting frame 04 in a lifting manner, and the clamping mechanism of the electric screwdriver assembly is located above the feeding assembly 02 and the loading assembly 03. Such a setting can improve the degree of automation of locking multiple screws and nuts to be locked. Specifically, the feeding assembly 02 automatically provides nuts, reduces the need for manual material collection, and improves feeding efficiency and accuracy. The loading assembly 03 is installed with bolts to be locked, realizes the automatic loading of bolts, and further reduces manual operation. The mounting frame 04 reciprocates between the feeding assembly 02 and the loading assembly 03, realizing automatic material transfer and positioning. The electric screwdriver assembly can be lifted and lowered on the mounting frame 04, ensuring that the clamping mechanism can accurately align the nut of the feeding assembly 02 and the bolt of the loading assembly 03.

[0071] In the embodiment of the present scheme, the nut locking device further includes a first driving unit 05, a camera unit and a control system. The first driving unit 05 is arranged on the workbench 01, and the first driving unit 05 is connected to the mounting frame 04 to move the mounting frame 04; the camera unit is arranged on the electric screwdriver assembly, and the camera unit is used to shoot the position of the bolt to be locked; the camera unit and the first driving unit 05 are respectively electrically connected to the control system, and the control system controls the start and stop of the first driving unit 05. Specifically, when working, the mounting frame 04 moves to the position of the feeding assembly 03, the camera unit takes a picture of the position of the bolt to be locked and feeds back the position information of the bolt to be locked to the control system; then, the mounting frame 04 drives the electric screwdriver assembly to move to the top of the feeding assembly 02, and the electric screwdriver assembly moves downward until the clamping mechanism clamps the nut; then, the electric screwdriver assembly moves upward; the mounting frame 04 drives the electric screwdriver assembly to move to the position of the feeding assembly 03 again until the nut is coaxial with the bolt to be locked photographed by the camera unit; the electric screwdriver assembly descends again to lock the nut to the bolt to be locked.

[0072] like Fig.10 As shown, further, the nut locking device also includes a buffer portion 06, which is arranged between the mounting frame 04 and the electric screwdriver body 40, and the buffer portion 06 is used to buffer the lifting and lowering of the electric screwdriver body 40. The buffer portion 06 is arranged between the mounting frame 04 and the electric screwdriver body 40 to buffer the lifting and lowering of the electric screwdriver body 40. Such a design can reduce impact and vibration and improve the stability and safety of operation. The buffer portion 06 helps the electric screwdriver body 40 to reach the working position smoothly, ensure the locking accuracy, and reduce the impact on other components of the equipment, thereby extending the service life of the equipment.

[0073] This solution does not limit the number of buffer parts 06.

[0074] In an embodiment of the present scheme, the mounting frame 04 includes a mounting vertical plate 041, a first stop portion 042 and a second stop portion 043, the electric screwdriver body 40, the first stop portion 042 and the second stop portion 043 are respectively arranged on the same side of the mounting vertical plate 041, and the first stop portion 042 and the second stop portion 043 are spaced apart along the height direction of the mounting vertical plate.

[0075] The electric screwdriver body 40 is movably arranged on the mounting vertical plate 041 in the height direction, and two buffer parts 06 are provided, one of which is arranged between the electric screwdriver body 40 and the first stopper 042, and the other buffer part 06 is arranged between the electric screwdriver body 40 and the second stopper 043. There are two buffer parts 06, which are respectively located between the electric screwdriver body 40 and the first stopper 042, and between the electric screwdriver body 40 and the second stopper 043. This configuration provides double buffering for the lifting and lowering movement of the electric screwdriver body 40, ensuring the stability and accuracy of the movement.

[0076] like Fig.12 As shown, in the embodiment of the present scheme, the loading assembly 03 is movably arranged on the workbench 01, and the loading assembly 03 has an initial position and a working position that are relatively arranged, and the working position is close to the feeding assembly 02, and the mounting frame 04 reciprocates from the working position to the feeding assembly 02. The movable design of the loading assembly 03 allows the space on the workbench 01 to be flexibly adjusted according to production needs, thereby optimizing the utilization of the production space. When used specifically, the jig can be installed on the loading assembly, and the bolts to be locked are located on the jig. The above arrangement facilitates the staff to replace the jig and the bolts to be locked at the initial position.

[0077] Furthermore, two loading assemblies 03 are provided, and the feeding assembly 02 is located between the two loading assemblies 03. The two loading assemblies 03 move in the same direction, and the initial positions of the two loading assemblies 03 are located on the same side of the feeding assembly 02. The feeding assembly 02 is located between the two loading assemblies 03. This layout helps to achieve a symmetrical workflow and simplify the operation steps.

[0078] In the embodiment of this scheme, the moving direction of the loading assembly 03 is perpendicular to the moving direction of the mounting frame 04. Specifically, it can be defined that the loading assembly reciprocates along the Y-axis direction, the mounting frame 04 reciprocates along the X-axis direction, and the electric screwdriver assembly reciprocates and rises and falls along the height direction Z-axis direction.

[0079] like Fig.12 and Fig.13 As shown, in the embodiment of the present solution, the nut locking device further comprises a protective cover 07, which is arranged on the workbench 01, one side of the protective cover 07 is an opening structure, and the initial position of the feeding assembly 03 is arranged close to the opening structure. Such an arrangement facilitates the protection of the components of the nut locking device and facilitates the replacement of the jig by the staff.

[0080] Furthermore, in this solution, the nut locking device further includes an alarm unit, and the alarm unit and the electric screwdriver body 40 are electrically connected to the control system respectively. When the operation of the electric screwdriver body 40 does not meet the preset conditions, the alarm unit alarms. Specifically, the alarm unit is arranged on the protective cover 07, and the control system and display screen used for control in this solution are installed on the protective cover 07.

[0081] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0082] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being only exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0083] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0084] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0085] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0086] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A clamping mechanism, characterized in that: The clamping mechanism comprises: A substrate (10); A plurality of clamping parts (20) are provided, and the plurality of clamping parts (20) are spaced apart along the circumference of the base (10); the clamping part (20) has a driving end (201) and a clamping end (202) that are arranged opposite to each other, and a middle part of the clamping part (20) is rotatably arranged on the base (10); The elastic part (30) is arranged between the plurality of clamping parts (20), and the elastic part (30) is respectively connected to the driving ends (201) of the plurality of clamping parts (20). The elastic part (30) provides a force to move the driving ends (201) away from each other, so that the clamping ends (202) of the plurality of clamping parts (20) are moved closer to each other to clamp the nut.

2. The clamping mechanism according to claim 1, characterized in that: The base (10) has a housing portion (101), the housing portion (101) is used to accommodate a nut, a plurality of clamping portions (20) are annularly arranged on the outer periphery of the housing portion (101), a plurality of first avoidance grooves (102) are arranged on the side wall of the housing portion (101), the plurality of first avoidance grooves (102) are distributed at intervals along the circumference of the housing portion (101), each of the first avoidance grooves (102) is respectively provided with a clamping end (202), and the clamping end (202) can be embedded in the housing portion (101) or removed from the housing portion (101).

3. The clamping mechanism according to claim 2, characterized in that: The accommodating portion (101) comprises a nut accommodating section (1011) and a screw accommodating section (1012) which are connected in sequence along the axial direction; the cross-sectional area of ​​the nut accommodating section (1011) is larger than the cross-sectional area of ​​the screw accommodating section (1012); the nut accommodating section (1011) is arranged on the end surface of the base (10); and the first avoidance groove (102) is connected to the nut accommodating section (1011).

4. The clamping mechanism according to claim 2, characterized in that: A second avoidance groove (103) is also provided on the side wall of the base (10), each of the first avoidance grooves (102) is connected to a second avoidance groove (103), the second avoidance groove (103) extends along the extension direction of the base (10), and the second avoidance groove (103) is used to avoid the clamping portion (20).

5. The clamping mechanism according to claim 1, characterized in that: The inner side wall of the clamping end (202) comprises a guide surface (2021) and a clamping surface (2022) which are connected to each other. The clamping surface (2022) and the guide surface (2021) are distributed along the extension direction of the clamping portion (20). The clamping surface (2022) is arranged close to the driving end (201). In the direction from the guide surface (2021) to the clamping surface (2022), the guide surface (2021) is inclined in the direction of the driving end (201).

6. An electric screwdriver assembly, characterized in that: include: The electric screwdriver body (40) is provided with an output shaft; The clamping mechanism according to any one of claims 1 to 5, wherein the base (10) of the clamping mechanism is arranged on the output shaft, and the output shaft is drivingly connected to the base (10) so that the base (10) rotates.

7. The electric screwdriver assembly according to claim 6, characterized in that: The electric batch assembly also includes: A floating joint (50) is arranged between the output shaft and the base (10), and the base (10) is movably arranged on the output shaft through the floating joint (50).

8. The electric screwdriver assembly according to claim 6, characterized in that: The electric batch assembly also includes: A sensor is arranged on the electric screwdriver body (40), and is used to detect the relative position between the accommodating portion (101) of the clamping mechanism and the nut. The sensor is electrically connected to the electric screwdriver body (40) to control the start and stop of the electric screwdriver body (40).

9. A nut locking device, characterized in that: include: Workbench (01); A material supply assembly (02), arranged on the workbench (01), the material supply assembly (02) being used to provide nuts; A loading assembly (03) is arranged on the workbench (01), and the loading assembly (03) is equipped with bolts to be locked; A mounting frame (04) is arranged on the workbench (01), and the mounting frame (04) reciprocates between the feeding assembly (02) and the loading assembly (03); The electric screwdriver assembly as described in any one of claims 6 to 8 is arranged on the mounting frame (04) in a liftable manner, and the clamping mechanism of the electric screwdriver assembly is located above the feeding assembly (02) and the loading assembly (03).

10. The nut locking device according to claim 9, characterized in that: The nut locking device also includes: A first driving unit (05) is arranged on the workbench (01), and the first driving unit (05) is drivingly connected to the mounting frame (04) so ​​as to move the mounting frame (04); A camera unit is provided on the electric screwdriver assembly, and is used to photograph the position of the bolt to be fastened; A control system, wherein the camera unit and the first driving unit (05) are electrically connected to the control system respectively, and the control system controls the start and stop of the first driving unit (05).

11. The nut locking device according to claim 9, characterized in that: The nut locking device also includes: The buffer part (06) is arranged between the mounting frame (04) and the electric screwdriver body (40), and the buffer part (06) is used to buffer the lifting and lowering of the electric screwdriver body (40).

12. The nut locking device according to claim 9, characterized in that: The loading assembly (03) is movably arranged on the workbench (01), and the loading assembly (03) has an initial position and a working position that are relatively arranged, the working position is close to the feeding assembly (02), and the mounting frame (04) reciprocates in a direction from the working position to the feeding assembly (02).

13. The nut locking device according to claim 12, characterized in that: Two loading assemblies (03) are provided, the feeding assembly (02) is located between the two loading assemblies (03), the moving directions of the two loading assemblies (03) are the same, and the initial positions of the two loading assemblies (03) are located on the same side of the feeding assembly (02).

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