A contactor moving iron core anti-bending test fixture and use method thereof

Abstract

The present invention discloses a contactor moving iron core anti-bending test fixture and a method for using the same, the fixture comprising: a bottom plate, the bottom of which is connected to a workbench of a bending test machine, an upper surface of one side of the bottom plate is provided with an open groove, a lower part of one side of the contactor moving iron core is clamped in the open groove, and the other side of the contactor moving iron core extends to the outside of the open groove and corresponds to the position of the test head of the bending test machine; wherein the lower side wall of the contactor moving iron core abuts against the bottom side wall of the open groove; a cover plate, comprising an integrally formed connecting portion and a covering portion, the connecting portion is connected to the other side of the bottom plate by a locking screw and a locking nut, the covering portion covers the open groove, and the covering portion contacts the upper surface of the contactor moving iron core; a plurality of connecting bolts, used to lock the contactor moving iron core between the covering portion and the open groove. The present invention improves the stability of the fixture clamping and the accuracy of the test results.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical experiments on finished metal material electrical parts, and in particular to a contactor moving iron core anti-bending test fixture and a use method thereof. Background Art

[0002] The moving iron core of the contactor is used to produce magnetic force when the coil is energized. Only this magnetic force can make the contactor complete the pull-in and release. The importance of this component is self-evident, so it is very important to conduct a flexural test on it to detect its flexural performance.

[0003] The contactor moving iron core has a special shape. Currently, there is no suitable fixture that can firmly fix the contactor moving iron core on the testing machine, which leads to poor accuracy of the test results. Summary of the invention

[0004] The invention mainly solves the technical problems existing in the prior art, thereby providing a contactor moving iron core anti-bending test fixture and a use method thereof.

[0005] The above technical problems of the present invention are mainly solved by the following technical solutions:

[0006] The contactor moving iron core anti-bending test fixture provided by the present invention comprises:

[0007] A bottom plate, the bottom of which is connected to the workbench of the bending test machine, an upper surface of one side of the bottom plate is provided with an open groove, a lower part of one side of the contactor moving iron core is clamped in the open groove, and the other side of the contactor moving iron core extends out of the open groove and corresponds to the position of the test head of the bending test machine; wherein the lower side wall of the contactor moving iron core abuts against the bottom side wall of the open groove;

[0008] The cover plate comprises an integrally formed connection portion and a covering portion, wherein the connection portion is connected to the other side of the base plate via a locking screw and a locking nut, the covering portion covers the opening groove, and the covering portion contacts the upper surface of the contactor moving iron core;

[0009] A plurality of connecting bolts are used to lock the contactor moving iron core between the covering portion and the opening groove.

[0010] Furthermore, the locking screw includes a screw body and a screw head, the bolt head is in the shape of a quadrangular pyramid, a quadrangular pyramid groove is provided on the workbench of the flexural testing machine, and the screw head is slidably matched with the quadrangular pyramid groove.

[0011] Furthermore, a first connecting hole is vertically provided on the other side of the base plate, a second connecting hole is vertically provided on the connecting portion, and the screw body passes through the first connecting hole and the connecting portion from bottom to top and is connected to the locking nut.

[0012] Furthermore, a plurality of third connecting holes are symmetrically provided on the covering portion, and a plurality of third threaded holes are provided on the base plate around the opening groove, the third connecting holes correspond one to one with the third threaded holes, and the connecting bolts pass through the third connecting holes from top to bottom and are threadedly connected with the third threaded holes.

[0013] Furthermore, there is a step between the connecting portion and the covering portion, and the step abuts against the upper side wall of the moving iron core of the contactor.

[0014] Furthermore, rectangular ribs are provided at the bottom of the bottom plate.

[0015] The method of using the contactor moving iron core anti-bending test fixture of the present invention comprises the following steps:

[0016] S1. Insert the locking screw from bottom to top through the first connecting hole of the bottom plate;

[0017] S2. Connect the bottom plate to the working table of the bending test machine, and make the locking screw slidably connected in the four-sided pyramid-shaped groove;

[0018] S3, placing one side of the contactor moving iron core in the open slot, and making the lower side wall of the contactor moving iron core abut against the bottom side wall of the open slot;

[0019] S4, closing the cover plate on the top of the bottom plate;

[0020] S5. The base plate and the cover plate are locked together by the cooperation of the locking screws and the locking nuts;

[0021] S6. Lock the contactor moving iron core between the covering portion and the opening groove by using a plurality of connecting bolts.

[0022] The beneficial effect of the present invention is that: by clamping the lower part of one side of the contactor moving iron core in the open groove of the bottom plate, and making the lower side wall of the contactor moving iron core abut against the bottom side wall of the open groove, and then using a plurality of connecting bolts to lock the contactor moving iron core between the cover part of the cover plate and the open groove. Finally, the cover plate, the bottom plate and the workbench of the anti-bending test machine are locked by locking screws and locking nuts, so that the contactor moving iron core is firmly fixed on the workbench of the anti-bending test machine, which improves the stability of the clamping and the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of a contactor moving iron core anti-bending test fixture of the present invention;

[0025] Figure 2 is a cross-sectional view of a contactor moving iron core anti-bending test fixture of the present invention;

[0026] Figure 3 It is an exploded view of the contactor moving iron core anti-bending test fixture of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the bottom plate of the contactor moving iron core anti-bending test fixture of the present invention;

[0028] Figure 5 It is a structural schematic diagram of a cover plate of a contactor moving iron core anti-bending test fixture of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the locking screw of the contactor moving iron core anti-bending test fixture of the present invention. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0031] See also Figure 1-6 As shown, the contactor moving iron core anti-bending test fixture of the present invention comprises:

[0032] The bottom of the bottom plate 1 is connected to the workbench of the bending test machine. An opening groove 11 is provided on the upper surface of one side of the bottom plate 1. The lower part of one side of the contactor moving iron core 2 is clamped in the opening groove 11. The other side of the contactor moving iron core 2 extends to the outside of the opening groove 11 and corresponds to the position of the test head 7 of the bending test machine; wherein the lower side wall of the contactor moving iron core 2 abuts against the bottom side wall of the opening groove 11;

[0033] The cover plate 3 includes an integrally formed connection portion 31 and a cover portion 32. The connection portion 31 is connected to the other side of the base plate 1 through a locking screw 4 and a locking nut 5. The cover portion 32 covers the opening groove 11 and contacts the upper surface of the contactor moving iron core 2.

[0034] A plurality of connecting bolts 6 are used to lock the contactor moving iron core 2 between the covering portion 32 and the opening slot 11 .

[0035] The present invention clamps the lower part of one side of the contactor moving iron core 2 in the opening groove 11 of the bottom plate 1, and makes the lower side wall of the contactor moving iron core 2 abut against the bottom side wall of the opening groove 11, and then uses a plurality of connecting bolts 6 to lock the contactor moving iron core 2 between the covering portion 32 of the cover plate 3 and the opening groove 11. Finally, the cover plate 3, the bottom plate 1 and the workbench of the bending test machine are locked by the locking screws 4 and the locking nuts 5, so that the contactor moving iron core 2 is firmly fixed on the workbench of the bending test machine, which improves the stability of the clamping and the accuracy of the test results.

[0036] Specifically, the locking screw 4 of the present invention includes a screw body 41 and a screw head 42. The bolt head 42 is in the shape of a quadrangular pyramid. A quadrangular pyramid groove is provided on the workbench of the bending test machine, and the screw head 42 slides in cooperation with the quadrangular pyramid groove. The quadrangular pyramid-shaped bolt head 42 not only enables the locking bolt 4 to slide along the quadrangular pyramid groove to adjust the position of the contactor moving iron core 2, but also improves the connection strength and stability between the bolt head 42 and the workbench of the bending test machine.

[0037] In the present invention, a first connecting hole 12 is vertically provided on the other side of the base plate 1 , a second connecting hole 33 is vertically provided on the connecting portion 31 , and the screw body 41 passes through the first connecting hole 12 and the connecting portion 31 from bottom to top and is connected to the locking nut 5 .

[0038] Preferably, a plurality of third connecting holes 34 are symmetrically provided on the covering portion 32, and a plurality of third threaded holes 13 are opened on the base plate 1 around the opening groove 11. The third connecting holes 34 correspond to the third threaded holes 13 one by one, and the connecting bolts 6 pass through the third connecting holes 34 from top to bottom and are threadedly connected with the third threaded holes 13.

[0039] The present invention opens third threaded holes 13 around the opening slot 11. When the connecting bolts 6 pass through the third connecting holes 34 from top to bottom and are threadedly connected with the third threaded holes 13, the third threaded holes 13 will be evenly distributed around the contactor moving iron core 2, so that the contactor moving iron core 2 can be firmly fixed in the opening slot 11.

[0040] Preferably, in order to further improve the clamping strength and positioning effect, a step 35 is provided between the connecting portion 31 and the covering portion 32 , and the step 35 abuts against the upper side wall of the contactor moving iron core 2 .

[0041] Preferably, rectangular ribs 14 are provided at the bottom of the base plate 1 .

[0042] The present invention provides a method for using a contactor moving iron core anti-bending test fixture, which comprises the following steps:

[0043] S1, insert the locking screw 4 from bottom to top into the first connecting hole 12 of the bottom plate 1;

[0044] S2, connect the bottom plate 1 to the workbench of the flexural testing machine, and make the locking screw 4 slidably connected in the four-sided pyramid-shaped groove;

[0045] S3, placing one side of the contactor moving iron core 2 in the opening slot 11, and making the lower side wall of the contactor moving iron core 2 abut against the bottom side wall of the opening slot 11;

[0046] S4, closing the cover plate 3 on the top of the bottom plate 1;

[0047] S5, locking the contactor moving iron core 2 between the cover portion 32 and the opening slot 11 by using a plurality of connecting bolts 6;

[0048] S6. The base plate 1 and the cover plate 3 are locked together, and the workbench of the flexural testing machine is locked together through the cooperation between the locking screw 4 and the locking nut 5.

[0049] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined in the claims.

Claims

1. A contactor moving iron core bending test fixture, characterized in that: include: A bottom plate (1) is connected to a workbench of a bending test machine at its bottom, an open groove (11) is provided on an upper surface of one side of the bottom plate (1), a lower portion of one side of a contactor moving iron core (2) is clamped in the open groove (11), and the other side of the contactor moving iron core (2) extends out of the open groove (11) and corresponds to the position of a test head (7) of the bending test machine; wherein a lower side wall of the contactor moving iron core (2) abuts against a bottom side wall of the open groove (11); A cover plate (3), comprising an integrally formed connection portion (31) and a cover portion (32), wherein the connection portion (31) is connected to the other side of the base plate (1) via a locking screw (4) and a locking nut (5), and the cover portion (32) covers the opening groove (11), and the cover portion contacts the upper surface of the contactor moving iron core (2); A plurality of connecting bolts (6) for locking the contactor moving iron core (2) between the covering portion (32) and the opening slot (11); The locking screw (4) comprises a screw body (41) and a screw head (42); the shape of the bolt head is a quadrangular pyramid; a quadrangular pyramid-shaped groove is provided on the workbench of the flexural testing machine; the screw head (42) is slidably matched with the quadrangular pyramid-shaped groove; The bottom of the base plate (1) is provided with rectangular ribs (14).

2. The contactor moving iron core bending test fixture according to claim 1, characterized in that: A first connecting hole (12) is vertically provided on the other side of the base plate (1), a second connecting hole (33) is vertically provided on the connecting portion (31), and the screw body (41) passes through the first connecting hole (12) and the connecting portion (31) from bottom to top and is connected to the locking nut (5).

3. The contactor moving iron core bending test fixture as claimed in claim 2, characterized in that: A plurality of third connection holes (34) are symmetrically provided on the covering portion (32), and a plurality of third threaded holes (13) are provided on the bottom plate (1) around the opening groove (11), the third connection holes (34) correspond to the third threaded holes (13) one by one, and the connection bolts (6) pass through the third connection holes (34) from top to bottom and are threadedly connected to the third threaded holes (13).

4. The contactor moving iron core bending test fixture as claimed in claim 3, characterized in that: A step (35) is provided between the connecting portion (31) and the covering portion (32), and the step (35) abuts against an upper side wall of the contactor moving iron core (2).

5. A method for using the contactor moving iron core bending test fixture according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1. Insert the locking screw (4) from bottom to top through the first connecting hole (12) of the base plate (1); S2. Connect the bottom plate (1) to the workbench of the bending test machine, and make the locking screw (4) slidably connected in the four-sided pyramid-shaped groove; S3, placing one side of the contactor moving iron core (2) in the open slot (11), and making the lower side wall of the contactor moving iron core (2) abut against the bottom side wall of the open slot (11); S4, covering the cover plate (3) on the top of the bottom plate (1); S5. Locking the contactor moving iron core (2) between the covering portion (32) and the opening slot (11) by means of a plurality of connecting bolts (6); S6. The base plate (1) and the cover plate (3) are locked together, and the workbench of the flexural testing machine is locked together, through the cooperation of the locking screw (4) and the locking nut (5).

Images