CN111829873B - Clamp for tensile test of U-shaped electric power fitting mechanical test - Google Patents

Abstract

The invention belongs to the technical field of tensile testing, in particular to a fixture for tensile testing of U-shaped electrical fittings mechanical tests, aiming at the fact that the existing U-shaped fixtures for mechanical testing of electrical fittings tensile testing are used when clamping electrical fittings. During the process, the fixture is in a suspended state, which causes the power fittings to be in a suspended state. The gravity of the power fittings in the suspended state has a gravitational potential energy in the horizontal direction, resulting in a horizontal gravity effect on the tensile test results. , resulting in inaccurate tensile test results, the following scheme is proposed, including the chute and two connecting frames. The present invention is provided with a lock plate, and the lock plate is equidistantly provided with sawtooth grooves, and the plate body between each sawtooth groove presents a trapezoidal structure, thereby avoiding its rotation on the horizontal plane during the clamping process of electric power fittings, and at the same time, During the clamping process, the vertical adjustment of the electric fittings will not be affected, which facilitates the replacement of the electric fittings.

Description

A fixture for tensile testing of U-shaped electrical fittings for mechanical testing

technical field

The invention relates to the technical field of tensile testing, in particular to a clamp for mechanical testing of U-shaped electric fittings.

Background technique

According to the GB/T5075-2001 national standard "Terms of Power Fittings", the definition: Power fittings are metal accessories that connect and combine various devices in the power system to transmit mechanical loads, electrical loads and certain protective functions. For U For type electric fittings machinery, it needs to be tested by tensile testing device after production, and it needs to be clamped by clamps during testing.

When the existing U-shaped power fittings mechanical test tensile test fixture is used for clamping the power fittings, the fixture is in a suspended state during the operation process, resulting in the power fittings being in a suspended state, and the power fittings in the suspended state are suspended. The gravity has gravitational potential energy in the horizontal direction, which will cause the effect of gravity in the horizontal direction on the tensile test results, resulting in inaccurate tensile test results.

Contents of the invention

Based on the existing U-shaped power fittings mechanical test tensile test fixture, when the power fittings are clamped, during the operation, the fixture is in a suspended state, resulting in the electric power fittings being in a suspended state, and the electric power in the suspended state The gravity of the fittings has the gravitational potential energy in the horizontal direction, which causes the influence of gravity in the horizontal direction on the tensile test results, causing the problem that the tensile test results are inaccurate. The present invention proposes a U-shaped electric fitting mechanical test tensile Test fixture.

The present invention proposes a U-shaped fixture for mechanical testing of electrical fittings, comprising a chute and two connecting frames, the inner wall of the chute is slidably connected with two sliders, and the top outer walls of the two sliders are A support frame is fixedly connected, the outer walls of the opposite sides of the two support frames are fixedly connected with connecting blocks, and the outer walls of the opposite sides of the two connection blocks are fixedly connected with a limit ring, and the bottoms of the two limit rings The outer walls are fixedly connected with connecting springs at equal distances, and the bottom outer walls of multiple connecting springs located on the same limiting ring are fixedly connected with the same support plate.

Preferably, baffles are fixedly connected to both outer walls of the chute.

Preferably, the top outer walls of the two limiting rings are fixedly connected with a No. 1 adjustment rod at an equal distance, and the top outer wall and the bottom outer wall of the connecting frame are provided with through holes, and the No. 1 adjustment rod is inserted into the inner wall of the through hole below. , the connection frame is located on the inner wall of the upper through hole plugged with a No. 2 adjusting rod.

Preferably, the inner wall of the connecting frame is equidistantly fixedly connected with connecting grooves, and the inner wall of each connecting groove is slidably connected with two connecting rods, and multiple connecting rods at the same height are fixedly connected to the corresponding No. 1 adjustment Rod and the outer wall of the No. 2 adjusting rod.

Preferably, the top outer walls of the plurality of No. 2 adjusting rods on one side are fixedly connected with the same lock ring.

Preferably, the outer wall of the lock ring is equidistantly provided with threaded holes, and the inner wall of each threaded hole is threadedly connected with a locking bolt.

Preferably, the other end of each locking bolt is connected to a locking plate through a bearing, and the outer wall of the locking plate is equidistantly provided with sawtooth grooves in the vertical direction.

Preferably, two sliding rods are fixedly connected to the inner walls on both sides of the chute, and the sliding rods are semicircular structures, and the sliding rods are in contact with the sliding block.

Beneficial effects among the present invention are:

1. By setting the support frame, connecting block and support plate, when clamping the U-shaped electric fittings, the bottom end is supported by the support plate, and at the same time, the device is slidably connected to the chute through the slider under the support frame Inner wall, so as to ensure that there is no gravity component in the horizontal direction of the electric fittings during the tensile test, so as to avoid affecting the accuracy of the tensile test results and improve the use value of the fixture.

2. By setting the lock plate, the lock plate is equidistantly opened with sawtooth grooves, and the plate body between each sawtooth groove presents a trapezoidal structure, thereby avoiding its rotation on the horizontal plane during the clamping process of electric fittings. At the same time, During the clamping process, the vertical adjustment of the electric fittings will not be affected, which facilitates the replacement of the electric fittings.

3. By setting the No. 1 adjustment rod, the No. 2 adjustment rod and the connection frame, when clamping the power fittings, adjust the distance between the No. 1 adjustment rod and the No. 2 adjustment rod between the connection frames according to the length of the U-shaped power fittings. Thereby improving the scope of application of the clamp.

4. By setting the sliding bar, the sliding bar is installed on the inner wall of the chute, and the sliding bar is in contact with the sliding block to reduce the friction force of the sliding block when sliding in the chute, thereby protecting the sliding block and prolonging its practical value. At the same time, During the tensile test, when the slider slides slightly, the smaller the friction resistance it receives, the smaller the impact on the accuracy of the test results, thereby further improving the accuracy of the test results.

Description of drawings

Fig. 1 is the overall structure schematic diagram of a kind of U-shaped electrical fittings mechanical test tension test clamp that the present invention proposes;

Fig. 2 is the partial structural enlarged view of the clamp for mechanical test tensile test of a kind of U-type electrical fittings that the present invention proposes;

Fig. 3 is a sectional view of the connection frame structure of a U-shaped electrical fitting mechanical test tensile test fixture proposed by the present invention;

Fig. 4 is a side view of the overall structure of a U-shaped power fitting mechanical test tensile test fixture proposed by the present invention;

Fig. 5 is a schematic diagram of the slide bar structure of a U-shaped power fitting mechanical test tensile test fixture proposed by the present invention.

In the figure: 1 chute, 2 baffle plate, 3 support frame, 4 connection block, 5 limit ring, 6 lock ring, 7 lock bolt, 8 lock plate, 9 No. 1 adjustment rod, 10 connection spring, 11 slider , 12 support plates, 13 sawtooth grooves, No. 14 adjusting rod No. 1, 15 connecting frame, 16 connecting grooves, 17 connecting rods, 18 slide bars.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

Example 1

Referring to Figures 1-4, a fixture for tensile testing of U-shaped electric fittings mechanical testing, including a chute 1 and two connecting frames 15, the inner wall of the chute 1 is slidably connected with two sliders 11, and the two sliders The top outer wall of 11 is fixedly connected with support frame 3, and the opposite side outer walls of two support frames 3 are all fixedly connected with connection block 4, and the opposite side outer walls of two connection blocks 4 are all fixedly connected with limit ring 5, two The bottom outer walls of each limiting ring 5 are fixedly connected with connecting springs 10 at equal distances, and the bottom outer walls of a plurality of connecting springs 10 on the same limiting ring 5 are fixedly connected with the same support plate 12, so as to perform U-shaped electric fittings. When clamping, the bottom end is supported by the support plate 12. At the same time, the device is slidably connected to the inner wall of the chute 1 through the slider 11 under the support frame 3, so as to ensure that the power fittings are stable during the tensile test. There is no component force of gravity in the horizontal direction, avoiding its influence on the accuracy of tensile test results and improving the use value of the fixture.

In the present invention, the outer walls on both sides of the chute 1 are fixedly connected with baffles 2 .

In the present invention, the top outer walls of the two limiting rings 5 are fixedly connected with a No. 1 adjusting rod 9 at equal distances, and the top outer wall and the bottom outer wall of the connection frame 15 are provided with through holes, and the No. 1 adjusting rod 9 is inserted into the lower through hole. The inner wall of the hole, the inner wall of the through hole where the connection frame 15 is located above is plugged with the No. 2 adjusting rod 14 .

In the present invention, the inner wall of the connecting frame 15 is equidistantly fixedly connected with connecting grooves 16, and the inner wall of each connecting groove 16 is slidably connected with two connecting rods 17, and a plurality of connecting rods 17 at the same height are fixedly connected to the corresponding The outer wall of No. 1 regulating rod 9 and No. 2 regulating rod 14.

In the present invention, the same locking ring 6 is fixedly connected to the top outer walls of the plurality of No. 2 adjusting rods 14 on one side.

In the present invention, the outer wall of the lock ring 6 is equidistantly provided with threaded holes, and the inner wall of each threaded hole is threadedly connected with a locking bolt 7 .

Example 2

Referring to Figures 1-5, a fixture for tensile testing of U-shaped electrical fittings mechanical tests, including a chute 1 and two connecting frames 15, the inner wall of the chute 1 is slidably connected with two sliders 11, and the two sliders The top outer wall of 11 is fixedly connected with support frame 3, and the opposite side outer walls of two support frames 3 are all fixedly connected with connection block 4, and the opposite side outer walls of two connection blocks 4 are all fixedly connected with limit ring 5, two The bottom outer walls of each limiting ring 5 are fixedly connected with connecting springs 10 at equal distances, and the bottom outer walls of a plurality of connecting springs 10 on the same limiting ring 5 are fixedly connected with the same support plate 12, so as to perform U-shaped electric fittings. When clamping, the bottom end is supported by the support plate 12. At the same time, the device is slidably connected to the inner wall of the chute 1 through the slider 11 under the support frame 3, so as to ensure that the power fittings are stable during the tensile test. There is no component force of gravity in the horizontal direction, avoiding its influence on the accuracy of tensile test results and improving the use value of the fixture.

In the present invention, the outer walls on both sides of the chute 1 are fixedly connected with baffles 2 .

In the present invention, the top outer walls of the two limiting rings 5 are fixedly connected with a No. 1 adjusting rod 9 at equal distances, and the top outer wall and the bottom outer wall of the connection frame 15 are provided with through holes, and the No. 1 adjusting rod 9 is inserted into the lower through hole. The inner wall of the hole, the inner wall of the through hole where the connection frame 15 is located above is plugged with the No. 2 adjusting rod 14 .

In the present invention, the inner wall of the connecting frame 15 is equidistantly fixedly connected with connecting grooves 16, and the inner wall of each connecting groove 16 is slidably connected with two connecting rods 17, and a plurality of connecting rods 17 at the same height are fixedly connected to the corresponding The outer wall of No. 1 regulating rod 9 and No. 2 regulating rod 14.

In the present invention, the same locking ring 6 is fixedly connected to the top outer walls of the plurality of No. 2 adjusting rods 14 on one side.

In the present invention, the outer wall of the lock ring 6 is equidistantly provided with threaded holes, and the inner wall of each threaded hole is threadedly connected with a locking bolt 7 .

Compared with Embodiment 1, the inner walls on both sides of the chute 1 are fixedly connected with two slide bars 18, and the slide bars 18 are semicircular structures, the slide bars 18 are in contact with the slide block 11, and the slide bar 18 and the slide block are in contact with each other. 11 contact, reduce the frictional force of the slider 11 when it slides in the chute 1, thereby protecting the slider 11 and prolonging its practical value. At the same time, when the slider 11 slips slightly during the tensile test, The smaller the friction resistance it receives, the smaller the impact on the accuracy of the test results, thereby further improving the accuracy of the test results.

During use, compared with embodiment 1, the slide bar 18 is in contact with the slide block 11, reducing the frictional force received by the slide block 11 when sliding in the chute 1, thereby protecting the slide block 11 and prolonging its practical value. During the tensile test, when the slider 11 slides slightly, the smaller the frictional resistance it receives, the smaller the impact on the accuracy of the test result, thereby further improving the accuracy of the test result.

Example 3

Referring to Figures 1-5, a fixture for tensile testing of U-shaped electrical fittings mechanical tests, including a chute 1 and two connecting frames 15, the inner wall of the chute 1 is slidably connected with two sliders 11, and the two sliders The top outer wall of 11 is fixedly connected with support frame 3, and the opposite side outer walls of two support frames 3 are all fixedly connected with connection block 4, and the opposite side outer walls of two connection blocks 4 are all fixedly connected with limit ring 5, two The bottom outer walls of each limiting ring 5 are fixedly connected with connecting springs 10 at equal distances, and the bottom outer walls of a plurality of connecting springs 10 on the same limiting ring 5 are fixedly connected with the same support plate 12, so as to perform U-shaped electric fittings. When clamping, the bottom end is supported by the support plate 12. At the same time, the device is slidably connected to the inner wall of the chute 1 through the slider 11 under the support frame 3, so as to ensure that the power fittings are stable during the tensile test. There is no component force of gravity in the horizontal direction, avoiding its influence on the accuracy of tensile test results and improving the use value of the fixture.

In the present invention, the outer walls on both sides of the chute 1 are fixedly connected with baffles 2 .

In the present invention, the top outer walls of the two limiting rings 5 are fixedly connected with a No. 1 adjusting rod 9 at equal distances, and the top outer wall and the bottom outer wall of the connection frame 15 are provided with through holes, and the No. 1 adjusting rod 9 is inserted into the lower through hole. The inner wall of the hole, the inner wall of the through hole where the connection frame 15 is located above is plugged with the No. 2 adjusting rod 14 .

In the present invention, the inner wall of the connecting frame 15 is equidistantly fixedly connected with connecting grooves 16, and the inner wall of each connecting groove 16 is slidably connected with two connecting rods 17, and a plurality of connecting rods 17 at the same height are fixedly connected to the corresponding The outer wall of No. 1 regulating rod 9 and No. 2 regulating rod 14.

In the present invention, the same locking ring 6 is fixedly connected to the top outer walls of the plurality of No. 2 adjusting rods 14 on one side.

In the present invention, the outer wall of the lock ring 6 is equidistantly provided with threaded holes, and the inner wall of each threaded hole is threadedly connected with a locking bolt 7 .

Compared with Embodiment 1, in Embodiment 2, two sliding rods 18 are fixedly connected to the inner walls of both sides of the chute 1, and the sliding rods 18 are all semicircular structures, and the sliding rods 18 are in contact with the sliding block 11, and the sliding The rod 18 is in contact with the slider 11 to reduce the friction force of the slider 11 when it slides in the chute 1, thereby protecting the slider 11 and prolonging its practical value. At the same time, during the tensile test, the slider 11 appears When finely sliding, the smaller the frictional resistance it receives, the smaller the impact on the accuracy of the test results, thereby further improving the accuracy of the test results.

When in use, compared with Embodiment 1, the sliding rod 18 is in contact with the sliding block 11 in Embodiment 2, which reduces the frictional force received by the sliding block 11 when sliding in the chute 1, thereby protecting the sliding block 11 and prolonging its practical value. , in the process of carrying out the tensile test, when the slider 11 slides slightly, the smaller the frictional resistance it receives, the smaller the impact on the accuracy of the test results, thereby further improving the accuracy of the test results;

Compared with Embodiment 1-2, the other end of each locking bolt 7 is connected with a lock plate 8 through a bearing, and the outer wall of the lock plate 8 is equally spaced with sawtooth grooves 13 in the vertical direction, and each sawtooth groove 13 The plate body between them presents a trapezoidal structure, so that during the clamping process of the power fittings, the rotation on the horizontal plane is avoided. At the same time, the vertical adjustment of the power fittings will not be affected during the clamping process, which is convenient for power Hardware to be replaced.

Compared with Example 1-2, when in use, put the U-shaped power fitting upside down between the two lock rings 6, and then press it into the support plate 12 below, and the connecting spring 10 on the support plate 12 will follow. Adjust, so as to ensure that the uppermost connection end is just stuck above the lock ring 6, and then adjust the position of the limit ring 5 according to the U-shaped length of the power fittings, pull the No. 1 adjustment rod 9 and the No. 2 adjustment rod 14, The connecting rod 17 on the No. 1 adjusting rod 9 and the No. 2 adjusting rod 14 slides on the inner wall of the corresponding connecting groove 16 to complete the adjustment of the distance between the No. 1 adjusting rod 9 and the No. 2 adjusting rod 14 inside the connecting frame 15. After the completion, the rotating locking bolt 7 drives the locking plate 8 to clamp and lock the electric fittings. When performing a tensile test, the support plate 12 below and the support frame 3 on the slider 11 support the electric fittings, eliminating The influence of the component force in the horizontal direction of gravity on the accuracy of the tensile test results improves the accuracy of the tensile test results.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (4)

1. The clamp for the mechanical test tensile test of the U-shaped electric power fitting comprises a sliding chute (1) and two connecting frames (15), and is characterized in that two sliding blocks (11) are slidably connected to the inner wall of the sliding chute (1), supporting frames (3) are fixedly connected to the outer walls of the tops of the two sliding blocks (11), and the sliding blocks (11) below the supporting frames (3) are slidably connected to the inner wall of the sliding chute (1) so as to ensure that no component force of gravity exists in the horizontal direction of the electric power fitting in the tensile test process; the outer walls of the opposite sides of the two supporting frames (3) are fixedly connected with connecting blocks (4), the outer walls of the opposite sides of the two connecting blocks (4) are fixedly connected with limiting rings (5), the bottom outer walls of the two limiting rings (5) are fixedly connected with connecting springs (10) at equal distances, and the bottom outer walls of a plurality of connecting springs (10) positioned on the same limiting ring (5) are fixedly connected with the same supporting plate (12); the top outer walls of the two limiting rings (5) are fixedly connected with first adjusting rods (9) at equal distances, through holes are formed in the top outer walls and the bottom outer walls of the connecting frames (15), the first adjusting rods (9) are inserted into the inner walls of the through holes in the bottom outer walls, and second adjusting rods (14) are inserted into the inner walls of the through holes in the top outer walls of the connecting frames (15); the inner wall of the connecting frame (15) is fixedly connected with connecting grooves (16) at equal intervals, and the inner wall of each connecting groove (16) is slidably connected with two connecting rods (17); a plurality of connecting rods (17) positioned at the same height are fixedly connected to the outer walls of the corresponding first adjusting rod (9) and second adjusting rod (14); the outer walls of the tops of the second adjusting rods (14) positioned on the same side are fixedly connected with the same locking ring (6); the outer wall of the lock ring (6) is equidistantly separated from the threaded holes, and the inner wall of each threaded hole is connected with a lock bolt (7) through threads; the other end of each locking bolt (7) is connected with a locking plate (8) through a bearing, and saw tooth grooves (13) in the vertical direction are formed in the outer wall of the locking plate (8) in an equidistant mode.

2. The clamp for mechanical test and tensile test of the U-shaped electric power fitting according to claim 1, wherein baffle plates (2) are fixedly connected to the outer walls of the two sides of the sliding groove (1).

3. The clamp for mechanical test and tensile test of the U-shaped electric power fitting according to claim 2, wherein two slide bars (18) are fixedly connected to the inner walls of the two sides of the slide groove (1).

4. A clamp for mechanical testing of U-shaped electric power fittings according to claim 3, characterized in that the slide bars (18) are all of semicircular structure, and the slide bars (18) are in contact with the slide blocks (11).

Images