CN202648928U - Displacement sensor universal fixture for testing mechanical properties of beam-column joints - Google Patents

Abstract

The utility model relates to a displacement sensor universal fixture used for testing the mechanical properties of hanging pieces, comprising a main pillar universal joint, a retractable locking pillar, and a T-shaped groove workbench. The tubular pillar is fixed on the T-shaped groove workbench through a base Above, the rod-shaped pillar is locked to the tubular pillar through the fastening screw on the locking handle, and the displacement sensor is locked to the tubular pillar through the pillar universal joint. The pillar universal joint is composed of two parts, the rod-shaped The pillar fixing clip and the rod-shaped pillar are locked by a hexagonal bolt, and the displacement sensor fixing clip and the displacement sensor are locked by a hexagonal bolt. The utility model ensures that the comprehensive performance test of the hanging piece meets the specified experimental requirements, and at the same time, the locking part is detachable, so that different beam-column combination test pieces can be tested, so that the positioning accuracy is not changed when clamping, and the support The application range becomes larger and the utilization rate is improved, which can reduce the work intensity of the test personnel and improve the efficiency of the test.

Description

A Universal Fixture for Displacement Sensors Used to Test the Mechanical Properties of Coupons

technical field

The utility model belongs to the technical field of fixture manufacturing, in particular to a displacement sensor universal fixture for testing the mechanical properties of hanging pieces.

Background technique

Beam-column joints (referred to as hangers) have semi-rigid characteristics and are key parts of shelf design. Due to the wide variety of beam-column joints, it is difficult to deduce them theoretically, so it must be determined by means of corresponding experiments. There are a large number of different types of beam-column joints in the project that need to be tested for mechanical properties. (EU logistics equipment standard FEM10.2.02-shelf design specification) gives the principle of the mechanical performance test of beam-column joints, which requires the formation of moment- Rotation angle curve diagram, which requires the displacement sensor to test the displacement change of beam-column joints. However, how to use displacement sensors to accurately and conveniently measure the displacement changes of beam-column joints still has the following problems:

(1) The displacement sensor needs to be installed at different positions of the column to achieve accurate measurement of the displacement of the beam-column joint, and a set of special sensor fixtures needs to be designed.

(2) At present, most of the sensor fixtures are fixed by magnetic base, but the magnetic base will cause electromagnetic interference to the displacement sensor in the test, and the measured data will be inaccurate.

(3) Displacement sensors are placed at different heights in different beam-column combination tests. Designing sensor brackets with different heights for different tests will greatly increase the cost of the test.

Contents of the invention

The technical problem to be solved by the utility model is to provide a displacement sensor universal fixture for testing the mechanical properties of hanging pieces, which can test different beam-column combination specimens and improve measurement accuracy.

The technical scheme adopted by the utility model to solve the technical problem is: provide a displacement sensor universal fixture for testing the mechanical properties of the hanging piece, including a T-shaped slot workbench, a retractable locking pillar and a pillar universal joint. The T-slot workbench is a flat plate with several through-slots on the upper surface, the cross-section of the through-slots on the T-slot workbench is in the shape of an inverted "T", and the T-slot workbench is equipped with telescopic Locking pillar, the telescopic locking pillar is composed of a rod-shaped pillar, a locking handle, a tubular pillar and a base, and the lower part of the base is in an inverted "T" shape corresponding to the upper channel of the T-slot workbench , the base is connected with an internally threaded cylinder in an inverted "T" shape, and a tubular support is installed on the internally threaded hole cylinder of the base, and the tubular support is a screw circular pipe with one end corresponding to the internal thread of the base There is a threaded hole on the side wall of the round pipe end at the other end of the tubular pillar, the round pipe end of the tubular pillar is inserted into the rod-shaped pillar, and a locking handle is installed on the threaded hole on the side wall to lock the rod-shaped pillar. The outer diameter of the tubular support is smaller than the inner diameter of the tubular support. The locking handle is composed of a circular knob and a double-ended screw. A circular knob is installed at one end, and a pillar universal joint is installed on the rod-shaped pillar.

The pillar universal joint includes a rod-shaped pillar fixing clip and a displacement sensor fixing clip, and the rod-shaped pillar fixing clip is a C-shaped clip with a clamping opening having a cylindrical diameter and corresponding to the rod-shaped pillar, and the rod-shaped pillar There is a blind hole whose axis is perpendicular to the cylindrical axis of its clamping mouth on the fixing clip. There are a number of evenly distributed threaded holes on the side wall of the blind hole on the rod-shaped pillar fixing clip. Penetrate the rod-shaped pillar and tighten it with bolts. The displacement sensor fixing clip is a C-shaped clip with a clamping mouth that has a cylindrical diameter and corresponds to the displacement sensor. There is an axis and its clamping mouth on the rod-shaped pillar fixing clip. The formed cylindrical axis is perpendicular to the protruding rotating shaft, the protruding rotating shaft of the rod-shaped pillar fixing clip corresponds to the blind hole on the rod-shaped pillar fixing clip, and the protruding rotating shaft of the rod-shaped pillar fixing clip is loaded into the rod Screw in the set screw in the blind hole on the rod-shaped pillar fixing clip and in the threaded hole of the blind hole side wall on the rod-shaped pillar fixing clip.

The T-slot workbench, rod-shaped support, tubular support and base are made of aluminum alloy.

Beneficial effect

The utility model ensures that the beam-column joint mechanical performance test realizes a full series of beam-column combination tests, and ensures that the test results are more accurate. At the same time, the locking part is detachable, and different beam-column combination specimens can be tested, so that the positioning accuracy will not be changed when clamping, the application range of the bracket will be enlarged, and the utilization rate will be improved, which can reduce the working intensity of the test personnel and improve Test efficiency.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a partial structural schematic diagram of part 2 of the utility model pillar universal joint.

Fig. 3 is a schematic diagram of the local structure of the round pipe end of the tubular pillar 5 of the present invention.

Fig. 4 is a partial structural schematic diagram of the base 6 of the present invention.

Detailed ways

Below in conjunction with specific embodiment, further set forth the utility model. It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

As shown in Figures 1 to 4, a displacement sensor universal fixture for testing the mechanical properties of coupons includes a T-slot workbench 7, a retractable locking pillar and a pillar universal joint 2, and the T-slot The workbench 7 is a flat plate with several through grooves on the upper surface, the cross section of the through grooves on the T-shaped groove workbench 7 is an inverted "T" shape, and the T-shaped groove workbench 7 is equipped with a retractable lock Tightening pillar, the telescopic locking pillar is composed of a rod-shaped pillar 3, a locking handle 4, a tubular pillar 5 and a base 6, the lower part of the base 6 is in an inverted "T" shape and the T-shaped slot workbench 7 Corresponding to the upper through groove, the base 6 is connected to an internally threaded cylinder in an inverted "T" shape, and the internally threaded hole cylinder of the base 6 is equipped with a tubular pillar 5, and the tubular pillar 5 is connected to the base at one end. 6 screw circular pipe fittings corresponding to the internal thread, the other end of the tubular support 5 has a threaded hole on the side wall of the round tube end, and the round tube end of the tubular support 5 is inserted into the rod-shaped support 3 and the threaded hole on the side wall Install the locking handle 4 to lock the rod-shaped pillar 3, the outer diameter of the rod-shaped pillar 3 is less than the inner diameter of the tubular pillar 5, the locking handle 4 is made up of a circular knob 12 and a double-ended screw 13, and the double-ended screw 13 One end of the screw is screwed into the threaded hole on the side wall of the tubular prop 5 to lock the rod-shaped prop 3, and the other end is equipped with a circular knob 12, and the prop universal joint 2 is installed on the rod-shaped prop 3.

The pillar universal joint 2 includes a rod-shaped pillar fixing clip 9 and a displacement sensor fixing clip 11. The rod-shaped pillar fixing clip 9 is a C-shaped clip with a clamping mouth that has a cylindrical diameter and corresponds to the rod-shaped pillar 3. There is a blind hole whose axis is perpendicular to the cylindrical axis of its clamping opening on the rod-shaped pillar fixing clip 9, and there are some uniformly distributed threaded holes on the side wall of the blind hole on the described rod-shaped pillar fixing clip 9, and the rod Rod-shaped pillar 3 is screwed on with bolt 8 in the clamping mouth of shaped pillar fixing clip 9, and described displacement sensor fixing clip 11 is a C-shaped clamp whose clamping mouth becomes a cylindrical diameter and corresponds to displacement sensor 1, and the rod There is a protruding rotating shaft whose axis is perpendicular to the cylindrical axis formed by the holding mouth of the rod-shaped pillar fixing clip 9, and the protruding rotating shaft of the rod-shaped pillar fixing clip 9 corresponds to the blind hole on the rod-shaped pillar fixing clip 9, The protruding shaft of the rod-shaped pillar fixing clip 9 is packed into the blind hole on the rod-shaped pillar fixing clip 9 and screwed into the threaded hole of the blind hole side wall on the rod-shaped pillar fixing clip 9 screw 10.

The T-slot table 7, the rod-shaped support 3, the tubular support 5 and the base 6 are made of aluminum alloy.

At the hanging piece 15 formed by the column 14 and the beam 16, the displacement sensor fixing clip 11 is locked by the bolt and the displacement sensor, and is locked by the set screw 10 and the rod-shaped pillar fixing clip 9 . The rod-shaped pillar fixing clip 9 is locked with the rod-shaped pillar 3 through the bolt 8 . The locking handle 4 has a circular knob 12 and a double-ended screw 13, and is locked with the tubular pillar 5 through the locking handle. The base 6 is threadedly connected with the tubular pillar 5, and the lower part of the inverted "T" shape is installed in the 7 slots of the T-shaped workbench to move.

Claims (3)

1. one kind is used for the displacement transducer universal fixture that the lacing film mechanical property detects, comprise T-shaped groove worktable (7), scalable locking pillar and pillar universal joint (2), it is characterized in that, described T-shaped groove worktable (7) be one at the flat board of upper surface with some grooves, the xsect of the upper groove of described T-shaped groove worktable (7) becomes " T " font, scalable locking pillar is housed on the described T-shaped groove worktable (7), described scalable locking pillar is by clavate pillar (3), lock handle (4), cast pillar (5) and base (6) form, described base (6) bottom one-tenth " T " font is corresponding with the upper groove of described T-shaped groove worktable (7), described base (6) connects an internal thread cylinder on " T " font, cast pillar (5) is housed on the internal thread hole cylinder of described base (6), described cast pillar (5) is the circular pipe fitting of the end screw rod corresponding with described base (6) internal thread, have threaded hole on the distolateral wall of described cast pillar (5) other end pipe, described cast pillar (5) pipe end inserts clavate pillar (3), lock handle (4) locking clavate pillar (3) is installed on the sidewall thread hole, described clavate pillar (3) external diameter is less than cast pillar (5) internal diameter, described lock handle (4) is comprised of circular knob (12) and double threaded screw (13), the distolateral wall threaded hole locking of described (13) screw rod spinning in pipe t shores of double threaded screw (5) pipe clavate pillar (3), the other end is installed circular knob (12), and pillar universal joint (2) is installed on the described clavate pillar (3).

2. a kind of displacement transducer universal fixture that detects for the lacing film mechanical property according to claim 1, it is characterized in that, described pillar universal joint (2) comprises clavate pillar geometrical clamp (9) and displacement transducer geometrical clamp (11), described clavate pillar geometrical clamp (9) is that a clamp port becomes cylindrical diameter and the C type folder corresponding with clavate pillar (3), a blind hole that axis is vertical with the cylindrical axis of its clamp port is arranged on the described clavate pillar geometrical clamp (9), some uniform threaded holes are arranged on the blind hole sidewall on the described clavate pillar geometrical clamp (9), penetrating clavate pillar (3) in described clavate pillar geometrical clamp (9) clamp port screws with bolt (8), described displacement transducer geometrical clamp (11) is that a clamp port becomes cylindrical diameter and the C type folder corresponding with displacement transducer (1), there is an axis to become the vertical outstanding rotating shaft of cylindrical axis with its clamp port on the described clavate pillar geometrical clamp (9), the outstanding rotating shaft of described clavate pillar geometrical clamp (9) is corresponding with the blind hole on the described clavate pillar geometrical clamp (9), the outstanding rotating shaft of described clavate pillar geometrical clamp (9) pack in the blind hole on the described clavate pillar geometrical clamp (9) and the threaded hole of the blind hole sidewall on described clavate pillar geometrical clamp (9) in screw-in screw (10).

3. a kind of displacement transducer universal fixture for the detection of lacing film mechanical property according to claim 1 is characterized in that, described T-shaped groove worktable (7), clavate pillar (3), cast pillar (5) and base (6) are made by aluminum alloy materials.

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