CN216560028U - A auxiliary fixtures mounting structure for aluminium alloy full-section compression test - Google Patents

Abstract

The utility model discloses an auxiliary tool mounting structure for an aluminum profile full-section compression test, which comprises a testing machine and an auxiliary tool, wherein a testing station is arranged on one side of the testing machine, a lower pressing plate fixedly mounted is arranged at the bottom of the testing station, an upper pressing plate arranged above the lower pressing plate in a lifting manner is arranged at the top of the testing station, and the auxiliary tool comprises a positioning assembly arranged on the lower pressing plate and a protective cover enclosing the periphery of the testing station. Technical scheme more than adopting, not only can realize accurate centering and fix reliably to the test sample, prevent that the process of the test from taking place eccentric compression and the side direction relative displacement and the pivoted condition appear, guaranteed experimental validity, can effectively avoid the sample piece departure through setting up the protection casing moreover, can form effectual protection to personnel and equipment, simultaneously, under the condition of current testing machine, only need reform transform through increasing auxiliary fixtures, need not new equipment, practiced thrift the cost.

Description

A auxiliary fixtures mounting structure for aluminium alloy full-section compression test

Technical Field

The utility model relates to the technical field of aluminum profile testing tools, in particular to an auxiliary tool mounting structure for an aluminum profile full-section compression test.

Background

In the aluminum profile full-section compression test, an axial compression force is applied to a test sample, so that the test sample is subjected to compression deformation and displacement along the axial direction, and the compression performance of the test sample is measured.

In the test process, the lateral relative displacement and rotation between the test sample and the pressing plate are not required, and the eccentric compression phenomenon is not required. However, referring to fig. 6, in the conventional testing machine, the upper pressing plate and the lower pressing plate are both smooth planar structures, which makes it difficult to fix and center the test sample, and at the same time, the gas in the cavity of the test sample is difficult to exhaust, which causes the eccentric compression, lateral relative displacement and rotation between the test sample and the pressing plate.

Moreover, the existing testing machine is not provided with any protective equipment, so that the risk that fragments of the tested sample fly out to hurt people or damage instruments exists.

It is urgent to solve the above problems.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides an auxiliary tool mounting structure for an aluminum profile full-section compression test.

The technical scheme is as follows:

the utility model provides an auxiliary fixtures mounting structure for aluminium alloy full-section compression test, includes the testing machine and installs the auxiliary fixtures on the testing machine, one side of testing machine is provided with experimental station, and the bottom of this experimental station has fixed mounting's holding down plate, the top of experimental station has the top board that sets up in the holding down plate top with the liftable, and its main points lie in: the auxiliary tool comprises a positioning assembly arranged on the lower pressing plate and a protective cover surrounding the test station, the positioning assembly comprises a workbench installed on the lower pressing plate through a horizontal adjusting mechanism, the workbench is located below the upper pressing plate, the upper surface of the workbench is provided with a limiting exhaust groove formed in a concave mode, and a limiting structure used for positioning a test sample and an exhaust structure used for outwards leading out test generated gas are arranged in the limiting exhaust groove.

Preferably, the method comprises the following steps: the limiting structure is a plurality of limiting support ribs which are formed on the wall of the limiting exhaust groove in a protruding mode along the circumferential direction, and the exhaust structure is a gap formed between every two adjacent limiting support ribs.

With the structure, the test sample can be reliably limited, and the test sample can be smoothly exhausted.

Preferably, the method comprises the following steps: the limiting exhaust groove is a rectangular groove, each side groove wall of the limiting exhaust groove is provided with a limiting support rib, each limiting support rib is arranged at the middle position of the corresponding side groove wall of the limiting exhaust groove, and the length of each limiting support rib is smaller than that of the corresponding side groove wall of the limiting exhaust groove.

By adopting the structure, the structure is simple and reliable, the processing and forming are easy, and the universality is good.

Preferably, the method comprises the following steps: the height of the limiting support ribs is smaller than the depth of the limiting exhaust grooves.

By adopting the structure, the test sample is convenient to limit.

Preferably, the method comprises the following steps: the horizontal adjusting mechanism comprises a lead screw nut driving assembly installed on the lower pressing plate and sliding rail guide assemblies respectively arranged on two sides of the lead screw nut driving assembly, the lead screw nut driving assembly comprises a lead screw rotatably installed on the lower pressing plate, a ball nut which drives a lead screw rotating driving motor through a speed reducer and forms a lead screw nut kinematic pair with the lead screw, the ball nut is fixedly installed at the bottom of the workbench, the sliding rail guide assemblies comprise two sliding rails which are arranged on two sides of the lead screw in parallel and sliding blocks which are respectively matched with the corresponding sliding rails in a sliding mode, the sliding rails are fixedly installed on the lower pressing plate, and the sliding blocks are fixedly installed at the bottom of the workbench.

By adopting the structure, the test device is stable and reliable, and can accurately control the position of the workbench to realize accurate centering of a test sample.

Preferably, the method comprises the following steps: and two ends of the lead screw are respectively arranged on the lower pressure plate through corresponding supporting bearings.

By adopting the structure, the reliable installation of the screw rod is ensured.

Preferably, the method comprises the following steps: the protection casing is including the fixed plate of difference fixed mounting in the testing machine both sides and set up the door that runs from opposite directions between two fixed plates, and two fixed plates can shelter from the both sides of experimental station completely, the front side of experimental station can be sheltered from completely to the door that runs from opposite directions.

By adopting the structure, the flying-out of sample fragments can be effectively prevented from hurting people or damaging instruments, and test samples can be conveniently taken and placed.

Compared with the prior art, the utility model has the beneficial effects that:

technical scheme's an auxiliary fixtures mounting structure for aluminium alloy full-section compression test more than adopting, not only can realize accurate centering and fix reliably to the test sample, prevent that the test process from taking place eccentric compression and the side direction relative displacement and the pivoted condition appear, experimental validity has been guaranteed, and can effectively avoid the sample piece departure through setting up the protection casing, can form effectual protection to personnel and equipment, and simultaneously, under the condition of current testing machine, only need reform transform through increasing auxiliary fixtures, need not new equipment, and the cost is saved.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a left side view of the present invention;

FIG. 3 is a front view of the positioning assembly;

FIG. 4 is a top view of the positioning assembly;

FIG. 5 is a top view of the shield;

fig. 6 is a schematic structural diagram of a conventional tester.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings.

As shown in fig. 1 to 4, an auxiliary tool mounting structure for a full-section compression test of an aluminum profile mainly comprises a testing machine 1 and an auxiliary tool mounted on the testing machine 1.

Referring to fig. 1 and 2, a testing station 11 is disposed on one side of the testing machine 1, a lower pressing plate 12 is fixedly mounted at the bottom of the testing station 11, an upper pressing plate 13 is disposed at the top of the testing station 11 and is capable of being lifted above the lower pressing plate 12, and the upper pressing plate 13 can be driven by a lifting mechanism to be pressed down, so that a full-section compression test is performed on a test sample.

Referring to fig. 1-4, the auxiliary tool includes a positioning assembly disposed on the lower platen 12 and a protective cover 2 surrounding the testing station 11, the positioning assembly includes a worktable 3 mounted on the lower platen 12 through a horizontal adjustment mechanism, the worktable 3 is located below the upper platen 13, the upper surface of the worktable 3 has a concave limiting exhaust groove 31, and a limiting structure 311 for positioning the test sample a and an exhaust structure 312 for guiding out the test generated gas are disposed in the limiting exhaust groove 31. The test sample A is arranged in the limiting exhaust groove 31 of the workbench 3, is limited by the limiting structure 311, and can be exhausted through the exhaust structure 312, so that the eccentric compression and the lateral relative displacement and rotation in the test process can be prevented, and the effectiveness of the test is ensured.

Specifically, referring to fig. 4, the limiting structure 311 is a plurality of limiting support ribs formed on the groove wall of the limiting exhaust groove 31 in a protruding manner along the circumferential direction, and the exhaust structure 312 is a gap formed between adjacent limiting support ribs. In this embodiment, the limiting exhaust groove 31 is a rectangular groove, each side groove wall of the limiting exhaust groove 31 is provided with a limiting support rib, each limiting support rib is respectively arranged at the middle position of the corresponding side groove wall of the limiting exhaust groove 31, and the length of each limiting support rib is smaller than the length of the corresponding side groove wall of the limiting exhaust groove 31. Even if the four sides of the test sample A are respectively and exactly supported on the corresponding limiting support ribs, at least four exhaust gaps can be ensured, and if the test sample A is in other shapes or slightly smaller in size, the exhaust gaps are larger, so that the exhaust is more favorable.

Further, the height of the limiting support ribs is smaller than the depth of the limiting exhaust groove 31, and meanwhile, chamfering processing is carried out on the upper portion of one side, away from the groove wall of the limiting exhaust groove 31, of the limiting support ribs, so that the test sample A is placed in the limiting exhaust groove 31.

Referring to fig. 3 and 4, the horizontal adjustment mechanism includes a screw nut driving assembly 4 mounted on the lower platen 12 and slide rail guiding assemblies 5 respectively disposed at two sides of the screw nut driving assembly 4, the screw nut driving assembly 4 includes a screw 41 rotatably mounted on the lower platen 12, a driving motor 43 driving the screw 41 to rotate through a reducer 42, and a ball nut 44 forming a screw nut kinematic pair with the screw 41.

The two ends of the screw 41 are respectively mounted on the lower pressing plate 12 through corresponding supporting bearings 45, the speed reducer 42 is connected with the screw 41 through a coupler 46, the ball nut 44 is fixedly mounted at the bottom of the workbench 3, the slide rail guide assembly 5 comprises two slide rails 51 which are arranged on the two sides of the screw 41 in parallel and sliders 52 which are respectively in sliding fit with the corresponding slide rails 51, the slide rails 51 are all fixedly mounted on the lower pressing plate 12, and the sliders 52 are all fixedly mounted at the bottom of the workbench 3. Therefore, the driving motor 43 can make the workbench 3 translate relative to the lower pressing plate 12 through a forward or reverse motor shaft, so that the test sample A is accurately centered, and eccentric compression in the test process is avoided.

Referring to fig. 1, 2 and 5, the protective cover 2 includes fixing plates 21 respectively fixedly installed at both sides of the testing machine 1 and a split door 22 disposed between the two fixing plates 21, the two fixing plates 21 can completely shield both sides of the testing station 11, and the split door 22 can completely shield the front side of the testing station 11. Specifically, the width and the length of the lower pressing plate 12 are both greater than those of the upper pressing plate 13, the lower pressing plate 12 protrudes out of the testing station 11 in the length and the width directions, specifically, the front sides of the two fixing plates 21 are basically flush with the front side of the lower pressing plate 12, the rear sides of the two fixing plates extend to the testing machine 1, the bottoms of the two fixing plates 21 are also basically flush with the bottom of the lower pressing plate 12, the top of the two fixing plates extends to the testing machine 1, the width of the side-by-side door 22 is approximately equal to that of the lower pressing plate 12, therefore, the testing station 11 is completely shielded by the protective cover 2 in the lateral direction, the top of the protective cover is hollowed out, the protective cover can well play a role, is not fully sealed, and exhaust is facilitated.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims (7)

1. The utility model provides an auxiliary fixtures mounting structure for aluminium alloy full-section compression test, includes testing machine (1) and installs the auxiliary fixtures on testing machine (1), one side of testing machine (1) is provided with experimental station (11), and the bottom of this experimental station (11) has fixed mounting's holding down plate (12), the top of experimental station (11) has top board (13) that set up in holding down plate (12) top with the liftable, its characterized in that: auxiliary fixtures is including setting up locating component on holding down plate (12) and enclosing protective cover (2) that close around experimental station (11), locating component includes workstation (3) of installing on holding down plate (12) through horizontal adjustment mechanism, and this workstation (3) are located the below of holding down plate (13), the upper surface of workstation (3) has spacing exhaust duct (31) of sunken formation, is provided with limit structure (311) that are used for fixing a position test sample (A) in this spacing exhaust duct (31) and is used for outwards exporting test production gaseous exhaust structure (312).

2. The auxiliary tool mounting structure for the aluminum profile full-section compression test according to claim 1, characterized in that: the limiting structures (311) are a plurality of limiting support ribs which are formed on the groove wall of the limiting exhaust groove (31) in a protruding mode along the circumferential direction, and the exhaust structures (312) are gaps formed between adjacent limiting support ribs.

3. The auxiliary tool mounting structure for the aluminum profile full-section compression test according to claim 2, characterized in that: the limiting exhaust groove (31) is a rectangular groove, each side groove wall of the limiting exhaust groove (31) is provided with a limiting support rib, each limiting support rib is arranged at the middle position of the corresponding side groove wall of the limiting exhaust groove (31), and the length of each limiting support rib is smaller than that of the corresponding side groove wall of the limiting exhaust groove (31).

4. The auxiliary tool mounting structure for the aluminum profile full-section compression test according to claim 2, characterized in that: the height of the limiting support ribs is smaller than the depth of the limiting exhaust grooves (31).

5. The auxiliary tool mounting structure for the aluminum profile full-section compression test according to claim 1, characterized in that: the horizontal adjusting mechanism comprises a screw nut driving component (4) arranged on the lower pressing plate (12) and sliding rail guide components (5) respectively arranged at two sides of the screw nut driving component (4), the screw nut driving component (4) comprises a screw (41) which is rotatably arranged on the lower pressure plate (12), a driving motor (43) which drives the screw (41) to rotate through a speed reducer (42) and a ball nut (44) which forms a screw nut kinematic pair with the screw (41), the ball nut (44) is fixedly arranged at the bottom of the workbench (3), the slide rail guide assembly (5) comprises two slide rails (51) which are arranged on two sides of the screw rod (41) in parallel and slide blocks (52) which are respectively in sliding fit with the corresponding slide rails (51), the sliding rails (51) are fixedly arranged on the lower pressing plate (12), and the sliding blocks (52) are fixedly arranged at the bottom of the workbench (3).

6. The auxiliary tool mounting structure for the aluminum profile full-section compression test according to claim 5, characterized in that: two ends of the lead screw (41) are respectively arranged on the lower pressure plate (12) through corresponding supporting bearings (45).

7. The auxiliary tool mounting structure for the aluminum profile full-section compression test according to claim 1, characterized in that: protection casing (2) are including fixed plate (21) and the setting of difference fixed mounting in testing machine (1) both sides between two fixed plates (21) to opening door (22), and two fixed plates (21) can shelter from the both sides of experimental station (11) completely, open door (22) and can shelter from the front side of experimental station (11) completely.

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