Test clamp with balanced clamping function

Abstract

The utility model relates to the field of plate compression performance tests, in particular to a balanced-clamping test clamp which comprises a base, a connecting rod arranged at the top of the base, a fixing frame located at the top of the connecting rod, a clamping mounting mechanism and a rotating plate, and the clamping mounting mechanism is arranged at the top of the base; and a connecting shaft is rotationally arranged on the inner side of the rotating plate, the connecting shaft is arranged on the inner side of the comprehensive clamping mechanism, the rotating plate is square, L-shaped rods are arranged on the side face of the rotating plate, and the four L-shaped rods are annularly arranged around the rotating plate. Through the arrangement of the clamping installation mechanism, the air cylinder drives the rotating plate to rotate so as to drive the four clamps to move at the same time, and the springs and the telescopic pipes can enable the movable plate and the C-shaped plate to clamp composite materials with different thicknesses, so that it can be ensured that the composite plates are evenly stressed in the compression process, and the compression efficiency is improved. Therefore, errors caused by uneven stress are avoided, and the accuracy of test results is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of plate compression performance test, especially relates to a test clamp of balanced clamping. BACKGROUND

[0002] The compression performance test can determine the mechanical properties of the composite material plate under the action of axial compression force, is one of the basic methods of composite material plate performance detection, and is mainly used for detecting the composite material plate under compression load.

[0003] The Chinese patent with the publication number CN207586019U discloses a clamp for composite material plate compression performance test, which comprises a top plate, a bottom plate, an upper fixed base, a lower fixed base, an upper baffle, a lower baffle, a linear bearing, a bearing seat and an optical shaft; a pair of upper fixed bases are fixed to the lower surface of the top plate, an upper bolt is rotatably connected to each upper fixed base, and the upper bolt abuts against the upper baffle; a pair of lower fixed bases are fixed to the upper surface of the bottom plate, a lower bolt is rotatably connected to each lower fixed base, and the lower bolt abuts against the lower baffle; the plate is clamped by the upper and lower baffles; the two optical shafts are symmetrically arranged on the two sides of the plate, the optical shafts pass through the top plate and the bottom plate, the upper part of the optical shaft is sleeved with the linear bearing, the linear bearing is installed on the bearing seat, the bearing seat is fixed to the upper surface of the top plate, and the lower part of the optical shaft is connected with the bottom plate. The utility model can effectively fix the composite material plate, facilitate observation of material damage phenomenon, has the advantages of high reliability, good continuous working property and the like.

[0004] However, the above-mentioned disclosed scheme has the following disadvantages: the existing composite plate compression test clamp can only clamp the test piece from two surfaces, needs to paste a reinforcing sheet on the clamping surface of the test piece to prevent stress concentration damage of the test piece during the test, and each set of clamp can only be used for testing the test piece of the same size, so that the clamp needs to be replaced when the compression performance of test pieces of different sizes is tested, the test cost is high, and manpower and material resources are wasted. UTILITY MODEL CONTENTS

[0005] The utility model aims at the problem that different sizes of composite plates cannot be clamped comprehensively in the background art, and provides a test clamp of balanced clamping.

[0006] The technical scheme of the utility model: a test clamp of balanced clamping, comprising a base, a connecting rod arranged at the top of the base and a fixing frame located at the top of the connecting rod; further comprising:

[0007] A clamping and mounting mechanism is arranged at the top of the base and is used for synchronously moving from four directions to clamp the composite material of different thicknesses in all directions;

[0008] And a rotating plate, the inner side of the rotating plate is rotatably provided with a connecting shaft, the connecting shaft is arranged on the inner side of the overall clamping mechanism, the rotating plate is square, the side of the rotating plate is provided with an L-shaped rod, four L-shaped rods are arranged around the rotating plate in a ring shape, the rotating plate rotates on the connecting shaft under the driving of the clamping and mounting mechanism, and the remaining three L-shaped rods are driven to rotate during the rotation, so that four-direction movement clamping is simultaneously performed.

[0009] Preferably, the synchronous clamping mechanism comprises a moving assembly and a clamping assembly;

[0010] The moving assembly is arranged on the top of the sliding table one and is used for synchronous movement in four directions.

[0011] The clamping assembly is arranged on the moving assembly and is used for clamping composite materials of different thicknesses.

[0012] Preferably, the moving assembly comprises a mounting plate, a supporting plate, a sliding groove and a cylinder.

[0013] The supporting plate is arranged on the top of the sliding table one, the mounting plate is arranged on the top of the supporting plate, the sliding groove is arranged on the mounting plate, the cylinder is arranged on the side of the supporting plate, the output end of the cylinder is provided with a push rod, the end of the push rod away from the cylinder is provided with a push block, the side of the push block is provided with a sliding piece, the side of the sliding piece away from the push block is provided with a sliding plate, and the side of the sliding plate away from the sliding piece is provided with a connecting block.

[0014] Preferably, the clamping assembly comprises an arc-shaped sliding rail, a moving plate, an extension pipe, a spring and a C-shaped clamping plate.

[0015] The C-shaped clamping plate is arranged on the top of the connecting block, the bottom of the C-shaped clamping plate is provided with an arc surface, the arc-shaped sliding rail is arranged on the inner side of the C-shaped clamping plate, the moving plate is slidably arranged on the arc-shaped sliding rail, the extension pipe is arranged on the top of the moving plate, the spring is arranged on the outer side of the extension pipe, and the top of the extension pipe is connected with the top of the C-shaped clamping plate.

[0016] Preferably, the dust removal and cooling mechanism comprises a motor, a rotating shaft and a blowing assembly.

[0017] The motor is arranged on the inner side of the fixed frame, and the rotating shaft is arranged on the output end of the motor.

[0018] The blowing assembly is arranged on the end of the rotating shaft away from the motor.

[0019] Preferably, the blowing assembly comprises a fan, a transfer box, a connecting disc, a fixing rod, a rotating disc one and a rotating disc two.

[0020] The fan is rotatably arranged outside the rotating shaft, the transfer box is arranged at the bottom of the fixed frame, the connecting disc is arranged at the bottom of the rotating shaft, the fixed rod is arranged at the bottom of the connecting disc, the first rotating disc is arranged outside the fixed rod, and the second rotating disc is arranged at the bottom of the fixed rod.

[0021] Compared with the prior art, the utility model has the advantages of the following beneficial technical effects:

[0022] 1、Through the setting of the clamping installation mechanism, the cylinder drives the rotating plate to rotate to drive the four clamps to move simultaneously, and the spring and the telescopic pipe can clamp composite materials of different thicknesses between the moving plate and the C-shaped plate, which can ensure that the composite plate is uniformly stressed during compression, thereby avoiding errors caused by uneven stress and improving the accuracy of test results, and can better fix and support the composite plate to prevent it from shifting or deforming during compression, thereby enhancing the stability of the test, and adapting to composite plates of different shapes and sizes to meet more diversified test requirements, and clamping composite materials of different thicknesses can be applied to more types of composite plates, thereby expanding the scope and applicability of the test, saving time and cost of replacing clamps, and improving test efficiency.

[0023] 2、Through the setting of the dust removal and cooling mechanism, the airflow blown by the fan is transmitted into the transfer box, and then the rotating shaft drives the air blowing pipe one and the air blowing pipe two to rotate, so that the airflow can be blown and removed through the air blowing pipe one and the air blowing pipe two to blow and remove dust on the platform, and when the test work is carried out in a high-temperature environment, the clamps can be cooled to a certain extent, which can ensure the close contact between the clamps and the plate, thereby improving the accuracy of the test, and also helping to reduce the influence of external factors on the test results, maintaining the cleanliness of the test environment, improving the reliability of the test results, and avoiding the influence of the clamps on the test results or the damage of the clamps due to long-term stress overheating. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a structural schematic view of an embodiment of the utility model;

[0025] Figure 2 It is a structural schematic view of the dust removal and cooling mechanism;

[0026] Figure 3 It is a structural schematic view of the dust removal and cooling mechanism;

[0027] Figure 4 It is a structural schematic view of the clamping installation mechanism;

[0028] Figure 5 It is Figure 4 It is an enlarged schematic view of A;

[0029] Figure 6 This is a schematic diagram of the bottom structure of the clamping and mounting mechanism.

[0030] Reference numerals in the attached drawings: 1. Base; 2. Connecting rod; 3. Fixing frame; 401. Motor; 402. Fan; 403. Transfer box; 404. Rotating shaft; 405. Connecting plate; 406. Fixing rod; 407. Turntable one; 408. Turntable two; 409. Air blowing pipe one; 410. Air blowing pipe two; 501. Mounting plate; 502. Support plate; 503. Slide groove; 504. Rotating plate; 505. Connecting shaft; 506. Connecting block; 507. C-shaped clamp; 508. Arc-shaped slide rail; 509. Moving plate; 510. Telescopic tube; 511. Spring; 512. Cylinder; 513. Push rod; 514. Push block; 515. Sliding component; 516. L-shaped rod; 517. Sliding plate. Detailed Implementation

[0031] Example 1

[0032] like Figures 1-6 As shown, the present invention proposes a balanced clamping test fixture, comprising a base 1, a connecting rod 2 disposed on the top of the base 1, a fixing frame 3 located on the top of the connecting rod 2, a clamping and mounting mechanism, and a rotating plate 504.

[0033] The clamping and mounting mechanism is located on the top of the base 1 and is used to clamp composite materials of different thicknesses from four directions in a 360-degree manner.

[0034] A connecting shaft 505 is rotatably mounted on the inner side of the rotating plate 504. The connecting shaft 505 is located inside the full clamping mechanism. The rotating plate 504 is square. L-shaped rods 516 are mounted on the side of the rotating plate 504. Four L-shaped rods 516 are arranged in a ring around the rotating plate 504. The rotating plate 504 rotates on the connecting shaft 505 under the drive of the clamping and mounting mechanism. During the rotation, the other three L-shaped rods 516 are rotated at the same time, so as to perform simultaneous four-way moving clamping.

[0035] The synchronous clamping mechanism comprises a moving assembly and a clamping assembly; the moving assembly is arranged on the top of the first sliding table and is used for synchronous movement in four directions; the clamping assembly is arranged on the moving assembly and is used for clamping composite materials with different thicknesses. The moving assembly comprises a mounting plate 501, a supporting plate 502, sliding grooves 503 and a gas cylinder 512; the supporting plate 502 is arranged on the top of the first sliding table, the mounting plate 501 is arranged on the top of the supporting plate 502, the sliding grooves 503 are arranged on the mounting plate 501, and four sliding grooves 503 are arranged in a ring shape around the mounting plate 501, and the gas cylinder 512 is arranged on the side of the supporting plate 502; the output end of the gas cylinder 512 is provided with a push rod 513, the end of the push rod 513 away from the gas cylinder 512 is provided with a push block 514, the side of the push block 514 is provided with a sliding piece 515, the side of the sliding piece 515 away from the push block 514 is provided with a sliding plate 517, and the side of the sliding plate 517 away from the sliding piece 515 is provided with a connecting block 506. The clamping assembly comprises an arc-shaped sliding rail 508, a moving plate 509, an extension pipe 510, a spring 511 and a C-shaped clamping plate 507; the C-shaped clamping plate 507 is arranged on the top of the connecting block 506, the bottom of the C-shaped clamping plate 507 is provided with an arc surface, the arc-shaped sliding rail 508 is arranged on the inner side of the C-shaped clamping plate 507, the moving plate 509 is slidably arranged on the arc-shaped sliding rail 508, the extension pipe 510 is arranged on the top of the moving plate 509, the spring 511 is arranged on the outer side of the extension pipe 510, the top of the extension pipe 510 is connected with the top of the C-shaped clamping plate 507, and the extension pipe 510 is located in the gap between the arc-shaped sliding rail 508 and the C-shaped clamping plate 507; the gas cylinder 512 is started, the gas cylinder 512 drives the push rod 513 to move, the push rod 513 drives the sliding piece 515 to move through the push block 514, the sliding piece 515 drives the rotating plate 504 to rotate through the L-shaped rod 516 when the sliding piece 515 moves, the rotating plate 504 drives the other three L-shaped rods 516 to rotate, thereby driving the other three sliding pieces 515 connected with the L-shaped rods 516 to slide in the sliding grooves 503 through the connecting block 506, the four connecting blocks 506 drive the four C-shaped clamping plates 507 to move synchronously, the C-shaped clamping plates 507 are in contact with the composite material, and the composite material is lifted up, the moving plate 509 moves upward under the action of the composite material, at this time, the spring 511 and the extension pipe 510 are compressed, thereby clamping the composite material between the moving plate 509 and the C-shaped clamping plate 507, when the outer side of the composite material is in contact with the arc-shaped sliding rail 508, the gas cylinder 512 stops working, and at this time, the composite material is clamped on all sides.

[0036] Embodiment two

[0037] As Figures 2-3 shown, the utility model discloses a test fixture of balanced clamping, compared with embodiment one, this embodiment introduces the structure of dust removal cooling mechanism in detail.

[0038] The dust removal and cooling mechanism comprises a motor 401, a rotating shaft 404 and a blowing assembly; the motor 401 is arranged on the inner side of the fixed frame 3, the rotating shaft 404 is arranged on the output end of the motor 401; the blowing assembly is arranged on the end of the rotating shaft 404 away from the motor 401. The blowing assembly comprises a fan 402, a transfer box 403, a connecting disc 405, a fixing rod 406, a rotating disc I 407 and a rotating disc II 408; the fan 402 is rotatably arranged on the outer side of the rotating shaft 404, the transfer box 403 is arranged on the bottom of the fixed frame 3, and the outer side of the transfer box 403 is fixedly connected with the end of the connecting rod 2 away from the base 1, the connecting disc 405 is arranged on the bottom of the rotating shaft 404, the fixing rod 406 is arranged on the bottom of the connecting disc 405, and three fixing rods 406 are rotatably arranged around the connecting disc 405, the rotating disc I 407 is arranged on the outer side of the fixing rod 406, the outer side of the rotating disc I 407 is rotatably connected with the top of the transfer box 403, the rotating disc II 408 is arranged on the bottom of the fixing rod 406, the outer side of the rotating disc II 408 is rotatably connected with the bottom of the transfer box 403, the bottom of the rotating disc II 408 is provided with a blowing pipe I 409, the side of the blowing pipe I 409 is provided with a blowing pipe II 410, the motor 401 is started, the motor 401 drives the rotating shaft 404 to rotate, the rotating shaft 404 drives the three fixing rods 406 to rotate through the connecting disc 405, the fixing rods 406 drive the rotating disc I 407 and the rotating disc II 408 to rotate on the transfer box 403, and the rotating disc II 408 drives the blowing pipe II 410 to rotate, so as to blow and remove dust on the clamp. Since the blowing pipe I 409 is located at the shaft center of the rotating disc II 408, the center of the mounting plate 501 is aligned and blown and dusted, and at the same time, the blowing can achieve certain cooling in the high-temperature environment, so as to avoid the reduction of service life of the clamp in the high-temperature environment.

[0039] In conclusion, when the utility model is used, the motor 401 is started, the motor 401 drives the rotating shaft 404 to rotate, the rotating shaft 404 drives the three fixed rods 406 to rotate through the connecting disc 405, the fixed rods 406 drive the rotating disc one 407 and the rotating disc two 408 to rotate on the transfer box 403, the rotating disc two 408 drives the blowing pipe two 410 to rotate, thereby blowing and dust removing the clamp, since the blowing pipe one 409 is located at the shaft center of the rotating disc two 408, the center of the installation plate 501 is blown and dust removed, thereby realizing the overall cleaning of the surface of the installation plate 501, then the cylinder 512 is started, the cylinder 512 drives the push rod 513 to move, the push rod 513 drives the sliding piece 515 to move through the push block 514, when the sliding piece 515 moves, the rotating plate 504 is driven to rotate through the L-shaped rod 516, so that the rotating plate 504 drives the remaining three L-shaped rods 516 to rotate, thereby driving the remaining three sliding pieces 515 connected with the L-shaped rod 516 to slide in the sliding groove 503 through the sliding plate 517 and the connecting block 506, the four connecting blocks 506 drive the four C-shaped clamping plates 507 to move synchronously respectively, when the arc surface of the C-shaped clamping plate 507 contacts the composite material, the composite material is lifted, the moving plate 509 moves upward under the action of the composite material, at this time, the spring 511 and the telescopic pipe 510 are compressed, thereby clamping the composite material of different thicknesses in the middle of the moving plate 509 and the C-shaped clamping plate 507, when the outer side of the composite material abuts against the arc-shaped slide rail 508, the cylinder 512 stops working, at this time, the composite material is clamped around.

[0040] The above has made a detailed description on the embodiment of the utility model in combination with the drawings, but the utility model is not limited to this, within the knowledge range of the technical personnel in the technical field, various changes can be made without departing from the purpose of the utility model.

Claims

1. A balanced clamping test fixture, comprising a base (1), a connecting rod (2) arranged on the top of the base (1), and a fixing frame (3) arranged on the top of the connecting rod (2); characterized in that, Also include: Clamping installation mechanism, clamping installation mechanism is arranged at the top of the base (1), used for synchronous movement from four directions to different thickness of composite material all-weather clamping; And the inner side of the rotating plate (504) is rotatably provided with a connecting shaft (505), the connecting shaft (505) is arranged inside the comprehensive clamping mechanism, the rotating plate (504) is square, the side of the rotating plate (504) is provided with L-shaped rod (516), the L-shaped rod (516) is arranged around the rotating plate (504) annularly, four, the rotating plate (504) is driven by the clamping installation mechanism to rotate on the connecting shaft (505), and the remaining three L-shaped rods (516) are driven to rotate during the rotating process, so that four directions are moved and clamped at the same time.

2. The test fixture of claim 1, wherein, Synchronous clamping mechanism includes moving assembly and clamping assembly; The moving assembly is arranged on the top of the sliding table, which is used for synchronous movement in four directions; The clamping assembly is arranged on the moving assembly, which is used for clamping different thickness of composite material.

3. The test fixture of claim 2, wherein, The moving assembly includes an installation plate (501), a support plate (502), a sliding groove (503) and a cylinder (512); The support plate (502) is arranged on the top of the sliding table, the installation plate (501) is arranged on the top of the support plate (502), the sliding groove (503) is arranged on the installation plate (501), the cylinder (512) is arranged on the side of the support plate (502), the output end of the cylinder (512) is provided with a push rod (513), the end of the push rod (513) away from the cylinder (512) is provided with a push block (514), the side of the push block (514) is provided with a sliding piece (515), the side of the sliding piece (515) away from the push block (514) is provided with a sliding plate (517), and the side of the sliding plate (517) away from the sliding piece (515) is provided with a connecting block (506).

4. The test fixture of claim 3 wherein, The clamping assembly includes an arc-shaped sliding rail (508), a moving plate (509), a telescopic pipe (510), a spring (511) and a C-shaped clamping plate (507); The C-shaped clamping plate (507) is arranged on the top of the connecting block (506), the bottom of the C-shaped clamping plate (507) is arranged as an arc surface, the arc-shaped sliding rail (508) is arranged inside the C-shaped clamping plate (507), the moving plate (509) is slidably arranged on the arc-shaped sliding rail (508), the telescopic pipe (510) is arranged on the top of the moving plate (509), the spring (511) is arranged outside the telescopic pipe (510), and the top of the telescopic pipe (510) and the top of the C-shaped clamping plate (507) are connected.

5. The test fixture of claim 1 wherein, It also includes dust removal and cooling mechanism, the dust removal and cooling mechanism includes motor (401), rotating shaft (404) and blowing assembly; The motor (401) is arranged inside the fixed frame (3), and the rotating shaft (404) is arranged at the output end of the motor (401); The blowing assembly is arranged at the end of the rotating shaft (404) away from the motor (401).

6. The test fixture of claim 5 wherein, The blowing assembly includes a fan (402), a transfer box (403), a connecting disc (405), a fixed rod (406), a rotating disc (407) and a rotating disc (408); The fan (402) is arranged outside the rotating shaft (404), the middle transfer box (403) is arranged at the bottom of the fixed frame (3), the connecting disc (405) is arranged at the bottom of the rotating shaft (404), the fixed rod (406) is arranged at the bottom of the connecting disc (405), the rotating disc I (407) is arranged outside the fixed rod (406), the rotating disc II (408) is arranged at the bottom of the fixed rod (406), the bottom of the rotating disc II (408) is provided with the blowing pipe I (409), and the side of the blowing pipe I (409) is provided with the blowing pipe II (410).

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