A self-locking clamping mechanism and a clamping device thereof

Abstract

The present application provides a self-locking clamping mechanism and a clamping device thereof, wherein the clamping mechanism comprises: a fixed frame, a self-locking component, a clamping component and a reset component; the self-locking component and the clamping component are both mounted on the fixed frame; the self-locking component comprises an eccentric wheel, the eccentric wheel abuts against the clamping component, and is used to drive the clamping component to clamp the product and lock the clamping state of the clamping component; the reset component is mounted on the fixed frame, and is used to automatically reset the clamping component when the self-locking component releases the clamping state. In the above manner, the clamping mechanism can clamp and fix the material to be processed, and lock the clamping state of the clamping mechanism. The design of the reset component can also realize the automatic reset of the clamping mechanism to prevent the clamping component from rebounding.

Description

Technical Field

[0001] The present application relates to the technical field of manual clamps, and in particular to a self-locking clamping mechanism and a clamping device thereof. Background Art

[0002] At present, the precision requirements of mechanical parts are increasing day by day, which inevitably increases the requirements for fixture positioning and clamping effect. The fixture is mainly used to reduce the time of workpiece processing, improve labor productivity, and reduce the labor intensity of workers. The commonly used fixture clamping method is to use nuts and bolts to clamp and fix. This fixing method is cumbersome to operate and inefficient. Summary of the invention

[0003] On the one hand, an embodiment of the present application provides a self-locking clamping mechanism, which includes: a fixed frame, a self-locking component, a clamping component and a reset component; the self-locking component and the clamping component are both installed on the fixed frame; the self-locking component includes an eccentric wheel, which abuts against the clamping component and is used to drive the clamping component to clamp the product and lock the clamping state of the clamping component; the reset component is installed on the fixed frame and is used to automatically reset the clamping component when the self-locking component releases the clamping state.

[0004] On the other hand, an embodiment of the present application provides a clamping device, which includes: a support frame and two clamping mechanisms; each of the clamping mechanisms includes: a fixed frame, a self-locking component, a clamping component and a reset component; the fixed frames of the two clamping mechanisms are respectively installed on the support frame; the self-locking component and the clamping component are both installed on the fixed frame; the self-locking component includes an eccentric wheel, which abuts against the clamping component and is used to drive the clamping component to clamp the product and lock the clamping state of the clamping component; the reset component is installed on the fixed frame, and is used to automatically reset the clamping component when the self-locking component releases the clamping state.

[0005] The self-locking clamping mechanism and its clamping device provided in the embodiment of the present application are equipped with a self-locking component, a clamping component and a reset component on a fixed frame. Among them, the self-locking component includes an eccentric wheel, which is in contact with the clamping component, and is used to drive the clamping component to clamp the product and lock the clamping state of the clamping component; the reset component is installed on the fixed frame, and is used to automatically reset the clamping component when the self-locking component releases the clamping state. Due to the characteristic that the eccentric wheel does not rotate about the center of the circle, and the setting that the eccentric wheel and the clamping component are in contact, the eccentric wheel only needs to rotate to drive the clamping component to clamp the product without complicated operations. This improves the convenience of operation, saves the time required for clamping and fixing, and thus improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0007] Figure 1 is a structural schematic diagram of a clamping mechanism 10 provided in one embodiment of the present application;

[0008] Figure 2 yes Figure 1 A schematic structural diagram of the middle fixing frame 100;

[0009] Figure 3 yes Figure 1 A schematic diagram of the connection structure between the middle self-locking component 200 and the fixing frame 100;

[0010] Figure 4 yes Figure 1 A schematic diagram of the connection structure between the middle clamping assembly 300, the fixing frame 100 and the self-locking assembly 200;

[0011] Figure 5 yes Figure 4 A schematic structural diagram of the middle transmission shaft 310;

[0012] Figure 6 yes Figure 4 A schematic structural diagram of the middle movable arm 330;

[0013] Figure 7 yes Figure 1 A schematic diagram of the connection structure between the middle reset assembly 400, the fixing frame 100 and the clamping assembly 300;

[0014] Figure 8 is a partial cross-sectional schematic diagram of the clamping mechanism 10 along the IX-IX direction;

[0015] Fig. 9 yes Figure 1 A schematic structural diagram of the middle clamping mechanism 10 in a clamping state;

[0016] Fig.10 yes Fig. 9 A partial cross-sectional schematic diagram of the middle clamping mechanism 10 along the IV-IV direction;

[0017] Fig.11 yes Figure 1 A schematic structural diagram of the middle clamping mechanism 10 in a released state;

[0018] Fig.12 yes Fig.11 A partial cross-sectional schematic diagram of the middle clamping mechanism 10 along the VI-VI direction;

[0019] Fig.13 It is a schematic structural diagram of a clamping device 50 according to another embodiment of the present application. DETAILED DESCRIPTION

[0020] The embodiment of the present application provides a self-locking clamping mechanism. The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is particularly pointed out that the following embodiments are only used to illustrate the present application, but do not limit the scope of the present application. Similarly, the following embodiments are only some embodiments of the present application rather than all embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0021] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] See also Figure 1 , Figure 1 It is a structural schematic diagram of a clamping mechanism 10 provided in one embodiment of the present application.

[0023] like Figure 1 As shown, the clamping mechanism 10 includes: a fixing frame 100, a self-locking assembly 200, a clamping assembly 300 and a reset assembly 400. The self-locking assembly 200, the clamping assembly 300 and the reset assembly 400 are all mounted on the fixing frame 100, the self-locking assembly 200 abuts against the clamping assembly 300, and is used to drive the clamping assembly 300 to clamp and lock the clamping state of the clamping assembly 300; the reset assembly 400 is slidably connected with the clamping assembly 300, and is used to reset the clamping assembly 300 when the clamping assembly 300 is released from the clamping state, and prevent the clamping assembly 300 from rebounding.

[0024] See also Figure 2 , Figure 2 yes Figure 1 A schematic structural diagram of the middle fixing frame 100.

[0025] like Figure 2As shown, the fixing frame 100 includes: a top wall 110, a bottom wall 120, a side wall 130 and a fixing plate 140. The top wall 110 and the bottom wall 120 are arranged opposite to each other, and the side wall 130 connects the sides of the top wall 110 and the bottom wall 120 to enclose and form an accommodating space 150. The fixing plate 140 is arranged on a side of the top wall 110 away from the bottom wall 120, and is fixedly connected to the top wall 110. Specifically, the top wall 110, the bottom wall 120 and the side wall 130 can be an integrally formed structure, and the three can enclose and form an accommodating space 150. The accommodating space 150 can be a relatively closed space to protect the internal structure from external influences and avoid damage to the internal structure. The fixing plate 140 overlaps with the top wall 110 and is fixedly arranged, for example, it can be fixedly connected by welding, bonding, riveting, etc., to increase the structural strength of the top wall 110. In addition, in some embodiments, the top wall 110, the bottom wall 120 and the side wall 130 may also be independent components, and they only need to be fixedly connected by welding, bonding and riveting to enclose the accommodating space 150. The fixing plate 140 may also be an integrally formed structure with the top wall 110 to make the structural strength higher.

[0026] See also Figure 3 , Figure 3 yes Figure 1 Schematic diagram of the connection structure between the self-locking component 200 and the fixing frame 100.

[0027] like Figure 3 As shown, the self-locking assembly 200 includes: an eccentric wheel 210, a mounting frame 220 and a rotating shaft 230. The eccentric wheel 210 is rotatably connected to the mounting frame 220 through the rotating shaft 230. The mounting frame 220 is arranged on the side of the fixing plate 140 away from the top wall 110, and is fixedly connected to the fixing plate 140. Specifically, the mounting frame 220 includes: a base 221 and a support arm 222. The base 221 is arranged on the side of the fixing plate 140 away from the top wall 110, and the support arm 222 is arranged on the side of the base 221 away from the fixing plate 140, and the base 221 and the support arm 222 are an integrally formed structure. The eccentric wheel 210 is arranged on the support arm 222, and is rotatably connected to the support arm 222 through the rotating shaft 230. A handle 211 is also provided on the eccentric wheel 210, and the operator can pull the eccentric wheel 210 through the handle 211 so that the eccentric wheel 210 rotates based on the mounting frame 220. In addition, when the fixing plate 140 and the top wall 110 are integrally formed or the fixing plate 140 does not exist, the base 221 can be directly disposed on a side of the top wall 110 away from the bottom wall 120 and fixedly connected to the top wall 110. In some embodiments, the mounting frame 220 can be integrally formed with the fixing plate 140; or the mounting frame 220 can be integrally formed with the top wall 110.

[0028] Please combine Figure 2 See also Figures 4 to 6 , Figure 4yes Figure 1 A schematic diagram of the connection structure between the middle clamping assembly 300, the fixing frame 100 and the self-locking assembly 200, Figure 5 yes Figure 4 The schematic diagram of the structure of the middle transmission shaft 310, Figure 6 yes Figure 4 A schematic structural diagram of the middle movable arm 330.

[0029] like Figures 4 to 6 As shown, the clamping assembly 300 includes: a transmission shaft 310, a driving rod 320, a movable arm 330, a fixed arm 340 and a positioning member 350. The transmission shaft 310 is arranged through the fixed plate 140 and the top wall 110, and extends into the accommodating space 150. The transmission shaft 310 includes: an abutment portion 311, a sliding portion 312 and a connecting portion 313. The abutment portion 311, the sliding portion 312 and the connecting portion 313 can be an integrally formed structure. The abutment portion 311 abuts against the eccentric wheel 210. For example, in this embodiment, a hole (not shown) is provided on the base 221, and the abutment portion 311 passes through the hole to abut against the eccentric wheel 210. The outer edge of the abutment portion 311 is arc-shaped and tangent to the outer edge of the eccentric wheel 210, so as to facilitate the sliding of the abutment portion 311 and the eccentric wheel 210. When the operator pulls the handle 211 to rotate the eccentric wheel 210 based on the mounting frame 220, the eccentric wheel 210 pushes the abutting portion 311 to move toward the bottom wall 120, driving the transmission shaft 310 to move to realize the driving function of the self-locking assembly 200. The sliding portion 312 is arranged on the side of the abutting portion 311 away from the eccentric wheel 210, and when the abutting portion 311 moves toward the bottom wall 120, a part of the sliding portion 312 is arranged in the accommodating space 150. The connecting portion 313 is arranged on the side of the sliding portion 312 away from the abutting portion 311, and is fixedly connected to the driving rod 320 in the accommodating space 150.

[0030] The movable arm 330 includes: a rotating rod 331 and a claw hook portion 332, and the rotating rod 331 and the claw hook portion 332 can be an integrally formed structure. One end of the rotating rod 331 is arranged in the accommodating space 150, and is rotatably connected to the inner surface of the side wall 130, for example, by bolts and rivets. The other end of the rotating rod 331 passes through the bottom wall 120 and extends to the outside of the accommodating space 150. For example, in this embodiment, a limiting opening 1201 is provided on the bottom wall 120, and the limiting opening 1201 is used to limit the rotation range of the rotating rod 331. The other end of the rotating rod 331 passes through the bottom wall 120 through the limiting opening 1201, extends to the outside of the accommodating space 150, and is bent in the opposite direction to form the claw hook portion 332. The claw hook portion 332 is used to fasten the material to be processed, and cooperates with the fixed arm 340 to achieve the clamping and fixing of the material. A slide rail 3301 is also provided on the area where the rotating rod 331 is arranged in the accommodating space 150. Part of the driving rod 320 is arranged on the slide rail 3301 and can slide according to the track of the slide rail 3301. The fixed arm 340 is arranged on the side of the bottom wall 120 away from the top wall 110 and is fixedly connected to the bottom wall 120. A positioning member 350 is also arranged on the fixed arm 340 for positioning the material to be processed. After the positioning is completed, the transmission shaft 310, the driving rod 320, the movable arm 330 and the fixed arm 340 cooperate to realize the clamping function of the clamping assembly 300. In addition, in some embodiments, the rotating rod 331 can also be rotatably connected to the outer surface of the side wall 130, and it is only necessary to open a slide rail identical to the slide rail 3301 in the area corresponding to the side wall 130 and the slide rail 3301, so that the driving rod 320 is arranged on the rotating rod 331 and the slide rail 3301 on the side wall 130, and when sliding along the slide rail 3301, the movable arm 330 is driven to rotate.

[0031] See also Figures 7 and 8 , Figure 7 yes Figure 1 A schematic diagram of the connection structure of the reset assembly 400, the fixing frame 100 and the clamping assembly 300, Figure 8 It is a partial cross-sectional schematic diagram of the clamping mechanism 10 along the IX-IX direction.

[0032] like Figures 7 and 8As shown, the reset assembly 400 includes: a mounting member 410 and an elastic member 420. One end of the mounting member 410 is arranged on the fixing plate 140 and fixedly connected to the fixing plate 140, and the other end of the mounting member 410 extends through the top wall 110 into the accommodating space 150. Specifically, a first through hole 1401 is provided on the surface of the fixing plate 140 close to the eccentric wheel 210, and a second through hole 1101 is provided on the side of the top wall 110 close to the fixing plate 140. The aperture of the first through hole 1401 is larger than the aperture of the second through hole 1101, and the center of the first through hole 1401 overlaps with the center of the second through hole 1101. The mounting member 410 includes: a fixing portion 4101 and a mounting portion 4102. The fixing portion 4101 is arranged in the first through hole 1401, and the mounting portion 4102 passes through the second through hole 1101 and is arranged in the accommodating space 150. A placement space 4102a is also provided on the mounting portion 4102. The fixing portion 4101 and the mounting portion 4102 may be an integrally formed structure. In addition, in some embodiments, the fixing portion 4101 may be an integrally formed structure with the fixing plate 140, and the mounting portion 4102 passes through the top wall 110 and is disposed in the accommodating space 150; or in the absence of the fixing plate 140, the fixing portion 4101 may be an integrally formed structure with the top wall 110, and the mounting portion 4102 is disposed in the accommodating space 150.

[0033] The transmission shaft 310 is passed through the mounting member 410 and is slidably connected to the mounting member 410. When the eccentric wheel 210 drives the abutting portion 311 to move, a part of the sliding portion 312 is arranged in the placement space 4102a and is slidably connected to the inner wall of the mounting member 4102. The connecting portion 313 passes through the surface of the mounting member 4102 that is opposite to the top wall 110, extends into the accommodating space 150 to the driving rod 320, and is fixedly connected to the driving rod 320. For example, a third through hole 4102b is provided on the surface of the mounting member 4102 that is opposite to the top wall 110, and the connecting portion 313 passes through the mounting member 410 through the third through hole 4102b and extends into the accommodating space 150. In this embodiment, the mounting member 410 can be a cylindrical component with a hollow portion such as a cylinder tube to facilitate the sliding of the sliding portion 312.

[0034] The elastic member 420 is arranged in the placement space 4102a, and one end of the elastic member 420 abuts against the side of the sliding portion 312 away from the eccentric wheel 210, and the other end of the elastic member 420 abuts against the sliding portion 312. The elastic member 420 is used to cooperate with the mounting member 410 and the transmission shaft 310 to reset under the action of its own elastic force when the self-locking assembly 200 is released from the clamping state, and prevent the transmission shaft 310 from rebounding. In this embodiment, the elastic member 420 can be a component that can be deformed, such as a spring. In some embodiments, the elastic member 420 can also be an elastic material such as rubber, plastic, and foam. Specifically, the above-mentioned elastic material can be filled in the space between the sliding portion 312 and the mounting portion 4102, so that the elastic material is elastically deformed under the extrusion of the sliding portion 312.

[0035] See also Figures 9 to 12 , Fig. 9 yes Figure 1 A schematic diagram of the structure of the middle clamping mechanism 10 in a clamping state, Fig.10 yes Fig. 9 A partial cross-sectional schematic diagram of the clamping mechanism 10 along the IV-IV direction, Fig.11 yes Figure 1 A schematic diagram of the structure of the clamping mechanism 10 in a released state, Fig.12 yes Fig.11 A partial cross-sectional schematic diagram of the middle clamping mechanism 10 along the VI-VI direction.

[0036] like Figures 9 to 12 As shown, in this embodiment, the positioning member 350 is first used to position the material to be processed. Specifically, the positioning member 350 can be a positioning pin, and a positioning hole is provided on the material to be processed. Before using the clamping mechanism 10 for clamping, the positioning pin is first inserted into the positioning hole to achieve the positioning of the material to be processed. After the positioning is completed, the operator pulls the handle 211 to rotate the eccentric wheel 210 and pushes the abutment portion 311 in the first direction X. The sliding portion 312 slides into the placement space 4102a and squeezes the elastic member 420. The connecting portion 313 is affected by the sliding portion 312, moves in the first direction X, and drives the driving rod 320 to move. When the driving rod 320 moves in the first direction X, the driving rod 320 moves along the track of the slide rail 3301, driving the rotating rod 331 to rotate based on the side wall 130, thereby rotating the movable arm 330, and the claw hook portion 332 buckles the material to be processed, and hooks the material to be processed to move toward the fixed arm 340, and finally clamps the material on the fixed arm 340 to achieve the clamping function of the clamping mechanism 10. At the same time, due to the wedge clamping characteristics of the eccentric wheel 210 itself, and the direction of the elastic force generated by the elastic member 420 is inconsistent with the force rotation direction of the eccentric wheel 210, the eccentric wheel 210 will not rebound under force, thereby locking the clamping state of the clamping assembly 300.

[0037] After the operator pulls the handle 211 to release the eccentric wheel 210, the elastic member 420, under its own elastic action, pushes the sliding portion 312 in the direction opposite to the first direction X, drives the connecting portion 313 to move, and then the driving rod 320 drives the movable arm 330 to move to release the material to be processed. During this process, the abutment portion 311 always abuts against the eccentric wheel 210 to prevent the eccentric wheel 210 from rotating due to gravity. The material to be processed can be clamped and fixed, and at the same time, the design of the eccentric wheel 210 realizes the self-locking function of the clamping mechanism 10, and the design of the elastic member 420 realizes the automatic reset function of the clamping mechanism 10, and prevents the clamping assembly 300 from rebounding.

[0038] The clamping mechanism 10 provided in the embodiment of the present application uses a self-locking component 200 and a clamping component 300 to realize the clamping function of the clamping mechanism 10 on the product, and uses a reset component 400 to realize the reset function of the clamping mechanism 10. Among them, the self-locking component 200 includes an eccentric wheel 210. By abutting the eccentric wheel 210 and the clamping component 300, and the characteristic that the eccentric wheel 210 does not rotate around the center of a circle, the eccentric wheel 210 only needs to rotate to drive the clamping component 300 to move, thereby clamping the product. This process is relatively simple to operate, saves the time of clamping and fixing, and improves production efficiency. At the same time, due to the inclined wedge characteristics of the eccentric wheel 210 itself, the eccentric wheel 210 can also lock the clamping state of the clamping component 300, improve the clamping stability, and avoid loosening.

[0039] See also Fig.13 , Fig.13 It is a schematic structural diagram of a clamping device 50 according to another embodiment of the present application.

[0040] like Fig.13As shown, the clamping device 50 includes: a support frame 500 and two clamping mechanisms 10. Specifically, the support frame 500 includes: a first support plate 510, a second support plate 520, a connecting frame 530 and a handle 540. The first support plate 510 and the second support plate 520 are arranged opposite to each other, and the connecting frame 530 connects the first support plate 510 and the second support plate 520 and is fixedly connected to both. The connecting frame 530 can specifically be a component such as an aluminum profile. Both clamping mechanisms 10 are arranged on the first support plate 510 and are installed in the same manner. For example, in this embodiment, the mounting frame 220 of the self-locking assembly 200 is arranged on the surface of the first support plate 510 away from the second support plate 520, and is fixedly connected to the first support plate 510. The fixing plate 140 of the fixing frame 100 is arranged on the surface of the first support plate 510 and the second support plate 520 arranged opposite to each other, and is fixedly connected to the first support plate 510. The positions of the mounting frame 220 and the fixing frame 100 correspond to each other, and the first support plate 510 is provided with a through slot 5101, through which the transmission shaft 310 can abut against the eccentric wheel 210 to realize the clamping function of the clamping mechanism 10. The handle 540 is provided on one side of the clamping mechanism 10 and is located on the surface of the first support plate 510 away from the second support plate 520, and is used for the operator to move the clamping device 50.

[0041] In the clamping mechanism 10 and the clamping device 50 provided in the embodiment of the present application, the eccentric wheel 210 is in contact with the transmission shaft 310, the transmission shaft 310 is fixedly connected with the driving rod 320, and the driving rod 320 is slidably connected with the movable arm 330. The eccentric wheel 210 drives the transmission shaft 310 to move, the transmission shaft 310 drives the driving rod 320 to move, the driving rod 320 slides along the slide rail 3301 on the movable arm 330, and then drives the movable arm 330 to clamp the product, thus realizing the clamping and fixing function of the clamping mechanism 10. At the same time, the operator only needs to pull the eccentric wheel 210 to rotate to clamp the product, the operation process is relatively simple, saving the time for clamping and fixing the product, and improving the production efficiency.

[0042] Furthermore, due to the wedge characteristics of the eccentric wheel 210 and the inconsistency of the force directions of the transmission shaft 310 and the eccentric wheel 210, the eccentric wheel 210 can also lock the clamping state of the clamping assembly 300, thereby preventing the clamping mechanism 10 from loosening due to vibration during product processing, thereby improving the stability of the clamping mechanism 10. At the same time, a mounting member 410 and an elastic member 420 are designed on the transmission shaft 310, so that one end of the elastic member 420 abuts against the transmission shaft 310 and the other end abuts against the mounting member 410. After the eccentric wheel 210 is unlocked, due to the elastic force of the elastic member 420 itself, the transmission shaft 310 can drive the movable arm 330 to release the product while maintaining the state of abutting against the eccentric wheel 210, thereby realizing the function of automatic resetting of the clamping mechanism 10.

[0043] The above descriptions are only some embodiments of the present application, and do not limit the protection scope of the present application. Any equivalent device or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A self-locking clamping mechanism, characterized in that: The clamping mechanism comprises: a fixing frame, a self-locking component, a clamping component and a resetting component; The fixing frame comprises: a top wall, a bottom wall and a side wall; the top wall and the bottom wall are arranged opposite to each other; the side wall connects the top wall and the bottom wall; the top wall, the bottom wall and the side wall are arranged to form a containing space; the bottom wall also has a limited position opening; The self-locking assembly comprises: an eccentric wheel which is arranged on a side of the top wall away from the bottom wall and connected to the top wall and located outside the accommodating space; the reset assembly is installed in the accommodating space; The clamping assembly comprises: a transmission shaft, a driving rod, a movable arm, a fixed arm and a positioning member; one end of the transmission shaft abuts against the eccentric wheel, and the other end of the transmission shaft is penetrated through the top wall and the reset assembly and extends into the accommodating space; the driving rod is disposed in the accommodating space and fixedly connected to the transmission shaft; one end of the movable arm is rotatably disposed on the side wall, and the other end passes through the limiting opening and extends out of the accommodating space in a direction away from the eccentric wheel, and the limiting opening is used to limit the range of movement of the movable arm; the movable arm is also provided with a slide rail connected to the driving rod; Part of the driving rod is arranged on the slide rail and can slide along the slide rail to drive the movable arm to rotate; the fixed arm is arranged on the side of the bottom wall away from the top wall and is fixedly connected to the bottom wall; the positioning member is arranged on the fixed arm and is used to position the material to be processed; wherein, When the eccentric wheel drives the transmission shaft to slide in a first direction away from the eccentric wheel, the transmission shaft drives the driving rod to slide along the slide rail and drives the movable arm to rotate to cooperate with the fixed arm to realize the clamping function, and the eccentric wheel also locks the clamping state; the reset assembly is used to automatically reset the transmission shaft when the eccentric wheel releases the clamping state.

2. The clamping mechanism according to claim 1, characterized in that: The fixing frame further comprises: a fixing plate; The fixing plate is arranged on a side of the top wall away from the bottom wall and is fixedly connected to the top wall; The eccentric wheel is arranged on a side of the fixing plate away from the top wall and is fixedly connected to the fixing plate.

3. The clamping mechanism according to claim 2, characterized in that: The transmission shaft comprises: an abutment portion, a sliding portion and a connecting portion; The abutting portion, the sliding portion and the connecting portion are an integrally formed structure; The abutting portion abuts against the eccentric wheel; The sliding portion is arranged on a side of the abutting portion away from the eccentric wheel, and a part of the sliding portion is arranged in the reset assembly in a clamped state; The connecting portion is arranged on a side of the sliding portion away from the eccentric wheel, passes through the reset assembly and extends toward the driving rod, and is fixedly connected to the driving rod.

4. The clamping mechanism according to claim 3, characterized in that: The self-locking assembly further comprises: a mounting frame; The eccentric wheel is rotatably connected to the mounting frame; The mounting bracket is arranged on a side of the fixing plate away from the top wall and is fixedly connected to the fixing plate.

5. The clamping mechanism according to claim 3, characterized in that: The reset assembly comprises: a mounting member and an elastic member; One end of the mounting member is disposed on the fixing plate and fixedly connected to the fixing plate, and the other end of the mounting member extends into the accommodating space; The mounting piece is provided with a placement space; A partial area of ​​the sliding portion is disposed in the placement space and is slidably connected to the mounting member; The connecting portion extends through the mounting member toward the driving rod and is fixedly connected to the driving rod; The elastic member is arranged in the placement space; One end of the elastic member abuts against a side of the sliding portion away from the self-locking component, and the other end of the elastic member abuts against a surface of the mounting member that is opposite to the top wall; The elastic member is used to cooperate with the mounting member to reset the transmission shaft under the action of its own elastic force when the self-locking assembly is released from the clamping state.

6. The clamping mechanism according to claim 5, characterized in that: The movable arm comprises: a rotating rod and a claw hook portion provided with the slide rail, wherein the rotating rod and the claw hook portion are an integrally formed structure; One end of the rotating rod is disposed in the accommodating space and is rotatably connected to the inner surface of the side wall; The other end of the rotating rod extends toward the fixed arm through the limiting opening and is bent to form the claw hook portion.

7. A clamping device, characterized in that: The clamping device comprises: a support frame and two clamping mechanisms according to any one of claims 1 to 6; wherein: The fixing frames of the two clamping mechanisms are both installed on the supporting frame.

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