Clamping device

Abstract

The utility model provides a clamping device which comprises a fixed clamping part and a movable clamping part, and the movable clamping part and the fixed clamping part are arranged in a spaced mode to form a clamping space. The multiple transmission rod structures are all connected with the movable clamping part, and the multiple transmission rod structures are arranged in the length direction of the movable clamping part at intervals; and the driving assembly is in driving connection with the multiple transmission rod structures so as to drive the multiple transmission rod structures to move synchronously and drive the movable clamping part to be close to or away from the fixed clamping part. The glass fiber chopped strand mat clamp solves the problem that in the prior art, a clamp can not stably clamp a glass fiber chopped strand mat.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a clamping device. Background Art

[0002] With the continuous advancement of science and technology, glass fiber chopped strand mat is widely used in various review materials such as automobile manufacturing, sanitary ware, chemical anti-corrosion pipelines, storage tanks, ships, etc. Therefore, the physical property test of glass fiber chopped strand mat is particularly important.

[0003] At present, the existing clamp for testing the tensile force of glass fiber chopped strand mat is a manual locking screw, which is prone to unstable clamping of the glass fiber chopped strand mat by the jaws during the tensile force test, thereby affecting the test result of the tensile force of the glass fiber chopped strand mat. Utility Model Content

[0004] The main purpose of the utility model is to provide a clamping device to solve the problem that the clamps in the prior art are unstable in clamping the glass fiber chopped strand mat.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a clamping device is provided, including: a fixed clamping part, a movable clamping part, the movable clamping part and the fixed clamping part are arranged at intervals to form a clamping space; a plurality of transmission rod structures, the plurality of transmission rod structures are all connected to the movable clamping part, and the plurality of transmission rod structures are arranged at intervals along the length direction of the movable clamping part; a driving assembly, the driving assembly is respectively connected to the plurality of transmission rod structures to drive the plurality of transmission rod structures to move synchronously, so as to drive the movable clamping part to approach or move away from the fixed clamping part.

[0006] Furthermore, the clamping device includes: an installation component, the installation component includes a clamp mounting seat, the clamp mounting seat has an installation space, the fixed clamping part and the movable clamping part are both located in the installation space, and the drive component and the transmission rod structure are both installed on the clamp mounting seat.

[0007] Furthermore, each transmission rod structure includes: a first transmission rod, which is connected to the clamp mounting seat through a first connecting shaft; a second transmission rod, which is hinged to the second transmission rod, and the second transmission rod is connected to the movable clamping part, and the first connecting shaft and the second transmission rod are arranged at intervals along the extension direction of the first transmission rod; wherein the first transmission rod is rotatably arranged around the axis of the first connecting shaft to drive the second transmission rod and the movable clamping part to move.

[0008] Furthermore, the driving assembly includes a piston cylinder, which includes a piston rod and a piston cylinder body that are connected to each other, the piston rod is movably inserted into the clamp mounting seat and connected to the first transmission rod, and the first connecting shaft is located between the piston rod and the second transmission rod; wherein: the extension direction of the piston rod is parallel to the extension direction of the second transmission rod; and / or, the fixed clamping part and the movable clamping part are both located between the piston cylinder body and the first transmission rod.

[0009] Furthermore, the driving assembly includes a driving motor, and an output shaft of the driving motor is rotatably disposed on the fixture mounting seat and is drivingly connected to the first connecting shaft.

[0010] Further, the first transmission rods of the plurality of transmission rod structures are arranged in parallel; and / or the second transmission rods of the plurality of transmission rod structures are arranged in parallel, and the second transmission rods of each transmission rod structure extend along the moving direction of the movable clamping part.

[0011] Furthermore, the installation assembly includes: multiple guide sleeves, each of which is installed on the fixture mounting seat, the second transmission rod is movably inserted into the guide sleeve, and the multiple guide sleeves and the second transmission rods of the multiple transmission rod structures are arranged one by one.

[0012] Furthermore, the clamp mounting seat has a plurality of first limiting grooves, the first transmission rod is located in the first limiting grooves, and the plurality of first limiting grooves and the first transmission rods of the plurality of transmission rod structures are arranged one by one; wherein the first limiting groove has a groove bottom wall and a first groove opening that are arranged oppositely, and the groove bottom wall and the first transmission rod are arranged at intervals; and / or, a second limiting groove is arranged on the inner wall surface of the installation space, the fixed clamping part has a limiting protrusion, and the limiting protrusion is arranged in the second limiting groove.

[0013] Furthermore, the fixed clamping part and the movable clamping part are arranged in parallel; and / or the fixed clamping part has a first clamping surface in contact with the part to be clamped, and the movable clamping part has a second clamping surface in contact with the part to be clamped, and a toothed structure is arranged on the first clamping surface and / or the second clamping surface.

[0014] Furthermore, there are two transmission rod structures, the central axis of the movable clamping part is perpendicular to the length direction of the movable clamping part, and the two transmission rod structures are symmetrically distributed on both sides of the movable clamping part with the central axis as the symmetry axis.

[0015] Applying the technical solution of the utility model, the utility model provides a clamping device, including: a fixed clamping part, a movable clamping part, the movable clamping part and the fixed clamping part are arranged at intervals to form a clamping space; a plurality of transmission rod structures, the plurality of transmission rod structures are connected to the movable clamping part, and the plurality of transmission rod structures are arranged at intervals along the length direction of the movable clamping part; a driving assembly, the driving assembly is respectively connected to the plurality of transmission rod structures to drive the plurality of transmission rod structures to move synchronously, so as to drive the movable clamping part to approach or move away from the fixed clamping part. Through the above arrangement, the plurality of transmission rod structures drive the movable clamping part to move, so that the movement process of the movable clamping part is stable and reliable, thereby making the clamping between the movable clamping part and the fixed clamping part stable, and by driving the plurality of transmission rod structures through the driving assembly, there is no need to manually tighten the screws, thereby realizing the automation of the clamping device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] 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:

[0017] Figure 1 The overall structural schematic diagram of the clamping device according to the embodiment of the utility model is shown;

[0018] Figure 2 A partial cross-sectional view of a clamp mounting seat according to an embodiment of the clamping device of the present utility model is shown;

[0019] Figure 3 An exploded view of a clamp mounting seat according to an embodiment of the clamping device of the present utility model is shown;

[0020] Figure 4 A schematic structural diagram showing the connection between the second transmission rod and the movable clamping part according to an embodiment of the clamping device of the utility model is shown.

[0021] The above drawings include the following reference numerals:

[0022] 100, fixed clamping part; 101, movable clamping part; 103, limiting protrusion; 102, toothed structure; 104, first mounting hole; 105, connecting side wall; 1050, second mounting hole; 1, transmission rod structure; 11, first transmission rod; 110, second mounting slot; 111, third mounting slot; 12, second transmission rod; 120, gap; 121, threaded pin; 122, third mounting hole; 2, drive assembly; 20, piston cylinder; 21, piston rod; 210, first mounting slot; 22, piston cylinder body; 3, mounting assembly; 30, fixture mounting seat; 300, mounting space; 301, first limiting slot; 31, first connecting shaft; 310, first connecting hole; 32, guide sleeve; 302, second limiting slot; 33, connecting structure; 330, joint; 331, locking nut; 332, connecting seat. DETAILED DESCRIPTION

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] Please refer to Figures 1 to 4 The utility model provides a clamping device, including: a fixed clamping part 100, a movable clamping part 101, the movable clamping part 101 and the fixed clamping part 100 are arranged at intervals to form a clamping space; a plurality of transmission rod structures 1, the plurality of transmission rod structures 1 are connected to the movable clamping part 101, and the plurality of transmission rod structures 1 are arranged at intervals along the length direction of the movable clamping part 101; a driving assembly 2, the driving assembly 2 is respectively connected to the plurality of transmission rod structures 1 to drive the plurality of transmission rod structures 1 to move synchronously, so as to drive the movable clamping part 101 to approach or move away from the fixed clamping part 100. Through the above arrangement, the plurality of transmission rod structures 1 drive the movable clamping part 101 to move, so that the movement process of the movable clamping part 101 is stable and reliable, so that the clamping between the movable clamping part 101 and the fixed clamping part 100 is stable, and the plurality of transmission rod structures 1 are driven by the driving assembly 2, and there is no need to manually lock the screws, so that the automation of the clamping device is realized.

[0025] In order to realize the installation of the fixed clamping part 100, the movable clamping part 101, the driving assembly 2, and the transmission rod structure 1, the clamping device includes: a mounting assembly 3, the mounting assembly 3 includes a clamp mounting seat 30, the clamp mounting seat 30 has an installation space 300, the fixed clamping part 100 and the movable clamping part 101 are both located in the installation space 300, and the driving assembly 2 and the transmission rod structure 1 are both installed on the clamp mounting seat 30. In this way, the fixed clamping part 100, the movable clamping part 101, the driving assembly 2, and the transmission rod structure 1 are all installed on the clamp mounting seat 30, so that the structure of the clamping device of the present application is compact.

[0026] In the present application, the clamp mounting seat 30 is made of aluminum profiles, so that the clamp mounting seat is lighter while ensuring the structural strength.

[0027] In order to realize that the transmission rod structure 1 drives the movable clamping part 101 to move, in the present application, each transmission rod structure 1 includes: a first transmission rod 11, the first transmission rod 11 is connected to the clamp mounting seat 30 through a first connecting shaft 31; the transmission rod structure 1 includes a second transmission rod 12, the first transmission rod 11 is hinged with the second transmission rod 12, the second transmission rod 12 is connected to the movable clamping part 101, and the first connecting shaft 31 and the second transmission rod 12 are arranged at intervals along the extension direction of the first transmission rod 11; wherein the first transmission rod 11 is rotatably arranged around the axis of the first connecting shaft 31 to drive the second transmission rod 12 and the movable clamping part 101 to move. Through the above arrangement, the transmission rod structure 1 forms a lever structure, so that the thrust on the movable clamping part 101 can be increased, and it is not easy to slip during the tensile force test, so that the test is stable and the test efficiency is improved.

[0028] In this application, if Figure 3 and Figure 4 As shown, one end of the second transmission rod 12 is connected to the movable clamping part 101; the clamping device includes a threaded pin 121, the threaded pin 121 is inserted into one end of the second transmission rod 12, the threaded pin 121 includes a protrusion and a screw rod connected to each other, the protrusion is located at the end of the screw rod away from the first transmission rod 11, the protrusion extends along the circumference of the threaded pin 121, and the protrusion is spaced from one end of the second transmission rod 12 to form a gap 120; the movable clamping part 101 has two oppositely arranged connecting side walls 105, the two connecting side walls 105 are arranged along the first The transmission rod 11 is distributed in the extending direction, and a second mounting hole 1050 is provided on the connecting side wall 105, and the second mounting hole 1050 penetrates the two connecting side walls 105; the movable clamping part 101 is provided with a first mounting hole 104, and after the threaded pin 121 and part of the second transmission rod 12 are inserted into the first mounting hole 104, the gap 120 is connected with the second mounting hole 1050, and the clamping device also includes a pin, which is inserted into the second mounting hole 1050 and the gap 120, so that the second transmission rod 12 and the movable clamping part 101 are fixedly connected. Through the above arrangement, the connection between the second transmission rod 12 and the movable clamping part 101 is stable and reliable.

[0029] In the present application, there are multiple second mounting holes 1050 and multiple pins, and the multiple pins are inserted into a gap 120 corresponding to a second transmission rod 12, and the multiple second mounting holes 1050 are arranged in a one-to-one correspondence with the multiple pins.

[0030] In the present application, there are two second mounting holes 1050 and two pins, and the two pins are passed through a second transmission rod 12. The two pins are symmetrically distributed on both sides of the second transmission rod 12 with the central axis of the second transmission rod 12 as the symmetry axis.

[0031] In the first embodiment of the present application, the driving assembly 2 includes a piston cylinder 20, and the piston cylinder 20 includes a piston rod 21 and a piston cylinder body 22 connected to each other. The piston rod 21 is movably arranged on the clamp mounting seat 30 and connected to the first transmission rod 11. The first connecting shaft 31 is located between the piston rod 21 and the second transmission rod 12. In this way, the movement of the piston rod 21 of the piston cylinder 20 drives one end of the first transmission rod 11 to move, thereby driving the first transmission rod 11 to rotate relative to the first connecting shaft 31, and then the other end of the first transmission rod 11 drives the second transmission rod 12 to move; wherein: the extension direction of the piston rod 21 is parallel to the extension direction of the second transmission rod 12, so that the movement of the movable clamping part 101 is stable; and / or, the fixed clamping part 100 and the movable clamping part 101 are both located between the piston cylinder body 22 and the first transmission rod 11, so that the structure between the fixed clamping part 100, the movable clamping part 101, the transmission rod structure 1 and the driving assembly is compact.

[0032] In the present application, the piston cylinder 20 is a gas cylinder; optionally, the piston cylinder 20 is a dual-axis gas cylinder.

[0033] like Figure 3 As shown, in the present application, the first transmission rod 11 and the piston rod 21 are connected by a second connecting shaft, the piston rod 21 has a first mounting groove 210, and the two ends of the first transmission rod 11 are respectively provided with a second mounting groove 110 and a third mounting groove 111, the first mounting groove 210 has a second groove opening, the second mounting groove 110 has a third groove opening, the first transmission rod 11 passes through the second groove opening and enters the first mounting groove 210, and the second connecting shaft enters the second mounting groove 110 through the third groove opening, so that the connection between the piston rod 21 and the first transmission rod 11 is convenient; the first transmission rod 11 includes The plurality of limit rod segments are arranged at circumferential intervals around the first transmission rod 11, the plurality of limit rod segments surround the third mounting groove 111, the plurality of limit rod segments form two oppositely arranged fourth groove openings and two oppositely arranged fifth groove openings, the second transmission rod 12 passes through the fourth groove opening and enters the third mounting groove 111, the third mounting hole 122 is arranged opposite to the fifth groove opening, the second fastener passes through the fifth groove opening and is located in the third mounting groove 111 and is penetrated in the third mounting hole 122, so that the connection structure between the first transmission rod 11 and the second transmission rod 12 is stable and reliable.

[0034] In another embodiment of the present application, the driving assembly 2 includes a driving motor, and the output shaft of the driving motor is rotatably disposed on the fixture mounting seat 30 and is drivingly connected to the first connecting shaft 31. At this time, the first connecting shaft 31 is fixedly connected to the fixture mounting seat, and the driving motor drives the first connecting shaft 31 to rotate, and drives the first transmission rod 11 to rotate around the axis of the first connecting shaft 31.

[0035] In the present application, the first transmission rods 11 of the plurality of transmission rod structures 1 are arranged in parallel; and / or the second transmission rods 12 of the plurality of transmission rod structures 1 are arranged in parallel, and the second transmission rods 12 of each transmission rod structure 1 extend along the moving direction of the movable clamping part 101. Through the above arrangement, the structure of the transmission rod structure 1 is reasonably arranged, and the movement of the movable clamping part 101 is stable.

[0036] like Figure 2 and Figure 3 As shown, the mounting assembly 3 includes: a plurality of guide sleeves 32, each of which is mounted on the fixture mounting seat 30, and the second transmission rod 12 is movably inserted into the guide sleeve 32. The plurality of guide sleeves 32 and the second transmission rods 12 of the plurality of transmission rod structures 1 are arranged one by one in correspondence. Through the guiding effect of the guide sleeve 32, the movement of the second transmission rod 12 is stable and reliable.

[0037] In the present application, the second transmission rod 12 includes a first rod segment and a second rod segment connected to each other, the first rod segment is connected to a threaded pin 121, and a third mounting hole 122 is provided on the second rod segment. The first transmission rod 11 and the second transmission rod 12 are fixedly connected by a first fastener penetrating the third mounting hole 122 and the first transmission rod 11; wherein the first rod segment is cylindrical, so that the connection between the second transmission rod 12 and the guide sleeve 32 is convenient, so that the movement of the second transmission rod 12 is stable, and the second rod segment is a flat structure, so that the connection between the first transmission rod 11 and the second transmission rod 12 is convenient, so that the connection structure between the first transmission rod 11 and the second transmission rod 12 is stable and reliable. wherein the first fastener can be a bolt, a screw, etc.

[0038] like Figures 1 to 3As shown, the clamp mounting seat 30 has a plurality of first limiting grooves 301, and the first transmission rod 11 is located in the first limiting grooves 301. The plurality of first limiting grooves 301 and the first transmission rods 11 of the plurality of transmission rod structures 1 are arranged one by one; wherein, the first limiting groove 301 has a groove bottom wall and a first groove opening arranged relatively, and the groove bottom wall and the first transmission rod 11 are arranged at intervals. By limiting the first limiting groove 301, the first transmission rod 11 can be prevented from excessive movement, so that the reliability of the movement of the first transmission rod 11 can be improved; and / or, a second limiting groove 302 is arranged on the inner wall surface of the installation space 300, and the fixed clamping part 100 has a limiting protrusion 103, and the limiting protrusion 103 is arranged in the second limiting groove 302, so that the installation and disassembly of the fixed clamping part 100 are convenient, so that the installation of the fixed clamping part 100 is stable, the structure is reliable, and it is also convenient to replace the fixed clamping part 100 of different sizes.

[0039] In the present application, the clamp mounting base 30 includes a plurality of stop protrusions arranged at intervals, a first limiting groove 301 is formed between two adjacent stop protrusions among the plurality of stop protrusions, a first connecting hole 310 is provided on the stop protrusion, and the first connecting shaft 31 is passed through the first connecting holes 310 of the corresponding two stop protrusions to realize the installation of the first connecting shaft 31.

[0040] In the present application, the fixed clamping part 100 and the movable clamping part 101 are arranged in parallel, so that the structural arrangement of the fixed clamping part and the movable clamping part is reasonable, which is convenient for clamping the part to be clamped; and / or the fixed clamping part 100 has a first clamping surface in contact with the part to be clamped, and the movable clamping part 101 has a second clamping surface in contact with the part to be clamped, and a toothed structure 102 is arranged on the first clamping surface and / or the second clamping surface, and the roughness of the first clamping surface of the fixed clamping part 100 and the second clamping surface of the movable clamping part 101 can be improved by the toothed structure 102, so that the friction between the clamping surface and the part to be clamped is increased, so that the fixed clamping part 100 and the movable clamping part 101 can firmly clamp glass fiber chopped strands of different sizes, thereby being able to adapt to different types of glass fiber chopped strands of glass fiber samples.

[0041] In the present application, the second transmission rod 12 is detachably connected to the movable clamping part 101 through a threaded pin 121, so as to facilitate replacement of movable clamping parts 101 of different sizes. Optionally, the movable clamping parts 101 of different sizes and the fixed clamping parts 100 of different sizes include movable clamping parts 101 / fixed clamping parts 100 having tooth structures 102 of different tooth pitches.

[0042] In the present application, both the movable clamping portion 101 and the fixed clamping portion 100 are rectangular structures, and movable clamping portions 101 of different sizes and fixed clamping portions 100 of different sizes include movable clamping portions 101 / fixed clamping portions 100 of different lengths and widths.

[0043] In the present application, the component to be clamped is glass fiber chopped strand mat.

[0044] In an embodiment of the present application, there are two transmission rod structures 1, the central axis of the movable clamping part 101 is perpendicular to the length direction of the movable clamping part 101, and the two transmission rod structures 1 are symmetrically distributed on both sides of the movable clamping part 101 with the central axis as the symmetry axis. In this way, a uniform driving force can be applied to the movable clamping part 101, so that the movement of the movable clamping part 101 is stable and reliable.

[0045] In the present application, the mounting assembly 3 further comprises a connection structure 33, which is mounted on the fixture mounting seat 30, and the connection structure 33 is used to connect with the joint of the testing machine so as to perform a tensile force test on the glass fiber chopped strand mat.

[0046] Specifically, the connection structure 33 includes a joint 330, which is provided with a second connection hole, and the second connection hole is used to connect with the testing machine joint; the connection structure 33 includes a locking nut 331, and the locking nut 331 is threadedly connected to the joint 330; the connection structure 33 includes a connection seat 332, and the connection seat 332 is provided with a plurality of third connection holes, and the connection seat 332 is installed on the fixture mounting seat 30 by means of a plurality of third fasteners passing through the plurality of third connection holes and the fixture mounting seat 30, and the plurality of third connection holes are arranged at circumferential intervals along the connection seat 332.

[0047] In the specific implementation process of the tensile force test of the clamping device of this application:

[0048] 1: Connect connector 330 to the connector of the testing machine;

[0049] 2: Adjust the position of the sample (glass fiber chopped strand mat) according to the scale lines at the bottom of the fixed clamping part 100 and the movable clamping part 101;

[0050] 3: Start the driving assembly 2, the driving assembly 2 (piston cylinder / air cylinder) starts to work, the piston rod 21 extends outward, driving one end of the first transmission rod 11 to move to the side away from the fixed clamping part 100, and the other end of the first transmission rod 11 pushes the second transmission rod 12 to the side close to the fixed clamping part 100, that is, the second end of the second transmission rod 12 drives the movable clamping part 101 to clamp the sample through the guidance of the guide sleeve 32;

[0051] 4: Move the middle crossbeam to ensure that the test sample can be correctly installed on the middle crossbeam, and adjust the position of the middle crossbeam to accommodate test samples of different sizes and shapes; the crossbeam is used to support the test sample to ensure that the test sample is subjected to uniform force during stretching;

[0052] 5: Start tensile test.

[0053] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0054] The utility model provides a clamping device, including: a fixed clamping part 100, a movable clamping part 101, the movable clamping part 101 and the fixed clamping part 100 are arranged at intervals to form a clamping space; a plurality of transmission rod structures 1, the plurality of transmission rod structures 1 are connected to the movable clamping part 101, and the plurality of transmission rod structures 1 are arranged at intervals along the length direction of the movable clamping part 101; a driving assembly 2, the driving assembly 2 is respectively connected to the plurality of transmission rod structures 1 to drive the plurality of transmission rod structures 1 to move synchronously, so as to drive the movable clamping part 101 to approach or move away from the fixed clamping part 100. Through the above arrangement, the plurality of transmission rod structures 1 drive the movable clamping part 101 to move, so that the movement process of the movable clamping part 101 is stable and reliable, so that the clamping between the movable clamping part 101 and the fixed clamping part 100 is stable, and the plurality of transmission rod structures 1 are driven by the driving assembly 2, and there is no need to manually lock the screws, so that the automation of the clamping device is realized.

[0055] 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 device, characterized in that: include: A fixed clamping portion (100), A movable clamping portion (101), wherein the movable clamping portion (101) and the fixed clamping portion (100) are arranged at an interval to form a clamping space; A plurality of transmission rod structures (1), each of the plurality of transmission rod structures (1) being connected to the movable clamping portion (101), and the plurality of transmission rod structures (1) being arranged at intervals along the length direction of the movable clamping portion (101); A driving assembly (2), wherein the driving assembly (2) is respectively connected to the plurality of transmission rod structures (1) for driving the plurality of transmission rod structures (1) to move synchronously, thereby driving the movable clamping portion (101) to move closer to or farther from the fixed clamping portion (100).

2. The clamping device according to claim 1, characterized in that: The clamping device comprises: The mounting assembly (3) comprises a clamp mounting seat (30), the clamp mounting seat (30) having a mounting space (300), the fixed clamping portion (100) and the movable clamping portion (101) both being located in the mounting space (300), and the driving assembly (2) and the transmission rod structure (1) both being mounted on the clamp mounting seat (30).

3. The clamping device according to claim 2, characterized in that: Each of the transmission rod structures (1) comprises: A first transmission rod (11), the first transmission rod (11) being connected to the clamp mounting seat (30) via a first connecting shaft (31); a second transmission rod (12), the first transmission rod (11) being hinged to the second transmission rod (12), the second transmission rod (12) being connected to the movable clamping portion (101), and the first connecting shaft (31) and the second transmission rod (12) being arranged at intervals along an extension direction of the first transmission rod (11); Wherein, the first transmission rod (11) is rotatably arranged around the axis of the first connecting shaft (31) to drive the second transmission rod (12) and the movable clamping portion (101) to move.

4. The clamping device according to claim 3, characterized in that: The driving assembly (2) comprises a piston cylinder (20), the piston cylinder (20) comprising a piston rod (21) and a piston cylinder body (22) connected to each other, the piston rod (21) is movably arranged on the clamp mounting seat (30) and connected to the first transmission rod (11), and the first connecting shaft (31) is located between the piston rod (21) and the second transmission rod (12); wherein: The extending direction of the piston rod (21) is parallel to the extending direction of the second transmission rod (12); and / or, The fixed clamping portion (100) and the movable clamping portion (101) are both located between the piston cylinder body (22) and the first transmission rod (11).

5. The clamping device according to claim 3, characterized in that: The driving assembly (2) comprises a driving motor, the output shaft of which is rotatably disposed on the clamp mounting seat (30) and is drivingly connected to the first connecting shaft (31).

6. The clamping device according to claim 3, characterized in that: The first transmission rods (11) of the plurality of transmission rod structures (1) are arranged in parallel; and / or, The second transmission rods (12) of the plurality of transmission rod structures (1) are arranged in parallel, and the second transmission rod (12) of each transmission rod structure (1) extends along the moving direction of the movable clamping portion (101).

7. The clamping device according to claim 3, characterized in that: The installation component (3) comprises: A plurality of guide sleeves (32), each of which is mounted on the fixture mounting seat (30), the second transmission rod (12) being movably inserted into the guide sleeve (32), and the plurality of guide sleeves (32) and the second transmission rods (12) of the plurality of transmission rod structures (1) being arranged in a one-to-one correspondence.

8. The clamping device according to claim 3, characterized in that: The clamp mounting seat (30) has a plurality of first limiting grooves (301), the first transmission rod (11) is located in the first limiting grooves (301), and the plurality of first limiting grooves (301) and the plurality of first transmission rods (11) of the transmission rod structures (1) are arranged in a one-to-one correspondence; wherein the first limiting groove (301) has a groove bottom wall and a first groove opening arranged opposite to each other, and the groove bottom wall and the first transmission rod (11) are arranged at intervals; and / or, A second limiting groove (302) is arranged on the inner wall surface of the installation space (300), and the fixed clamping portion (100) has a limiting protrusion (103), and the limiting protrusion (103) is arranged in the second limiting groove (302).

9. The clamping device according to any one of claims 1 to 8, characterized in that The fixed clamping portion (100) and the movable clamping portion (101) are arranged in parallel; and / or, The fixed clamping portion (100) has a first clamping surface in contact with the part to be clamped, and the movable clamping portion (101) has a second clamping surface in contact with the part to be clamped, and a toothed structure (102) is provided on the first clamping surface and / or the second clamping surface.

10. The clamping device according to any one of claims 1 to 8, characterized in that There are two transmission rod structures (1), the central axis of the movable clamping portion (101) is perpendicular to the length direction of the movable clamping portion (101), and the two transmission rod structures (1) are symmetrically distributed on both sides of the movable clamping portion (101) with the central axis as the symmetry axis.

Images