Vibration and impact test monitoring device for electromagnetic pin puller

Abstract

The utility model discloses a vibration and impact test monitoring device for an electromagnetic pin puller, which comprises a bottom plate, a support column and the electromagnetic pin puller are respectively fixed on the bottom plate, a static spring assembly, an insulating spacer and a reset elastic sheet are sequentially mounted at the upper end of the support column, and the static spring assembly and the reset elastic sheet are oppositely arranged. The cantilever end of the reset elastic piece is connected with a pin at the upper end of the electromagnetic pin puller, and the static spring assembly and the reset elastic piece are electrically connected with the display device. When the electromagnetic pin puller is excited to enable the pin to retract, the static spring assembly is in contact with the reset elastic piece, and the display device is conducted; when the electromagnetic pin puller is de-excited to enable the pin to extend out, the static spring assembly is separated from the reset elastic piece, and the display device is not conducted. The static spring assembly and the reset elastic piece can be contacted or separated under different states of the pin head, so that the display device is conducted or not conducted, whether the pin of the electromagnetic pin puller runs in place or not can be judged according to the state of the display device, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromagnetic pin puller testing, and in particular relates to a vibration and impact test monitoring device for an electromagnetic pin puller. Background Art

[0002] At present, the application scope of electromagnetic pin pullers in China is becoming more and more extensive. During the application process, whether the pins of the electromagnetic pin pullers are moved into place and whether the security mechanism is completely released is related to whether the overall mechanism can operate effectively and work reliably. This is a key assessment item for the electromagnetic pin puller. Therefore, during the vibration, impact and other test processes of the electromagnetic pin puller, it is necessary to conduct reliability detection of the pin position status. Since the output part of this type of electromagnetic pin puller is only a movable pin, at present, the activity status of the pin can only be roughly observed by the naked eye, and it is impossible to make an accurate judgment. Therefore, it cannot meet the test needs in the product development process. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the utility model provides a vibration and impact test monitoring device for an electromagnetic pin puller. The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0004] A vibration and impact test monitoring device for an electromagnetic pin puller comprises a base plate, on which a pillar and an electromagnetic pin puller are respectively fixed, a static spring assembly, an insulating gasket and a reset spring are sequentially mounted on the upper end of the pillar, the static spring assembly and the reset spring are arranged opposite to each other, the cantilever end of the reset spring is connected to a pin at the upper end of the electromagnetic pin puller, the static spring assembly and the reset spring are respectively electrically connected to a display device; when the electromagnetic pin puller is energized to retract the pin, the static spring assembly contacts the reset spring, and the display is turned on; when the electromagnetic pin puller is de-energized to extend the pin, the static spring assembly is separated from the reset spring, and the display is turned off.

[0005] Furthermore, the static spring assembly includes a static spring sheet and a static contact point installed at the cantilever end of the static spring sheet, and is in contact with or separated from the reset spring sheet through the static contact point.

[0006] Furthermore, the cantilever end of the reset spring is a U-shaped structure, and the U-shaped structure is clamped in the annular groove of the pin.

[0007] Furthermore, the cantilever ends of the static spring piece and the reset spring piece are bent downward by 6-8 degrees.

[0008] Furthermore, a through slot is opened in the middle of the bottom plate, the lower end of the pillar is fixed in the through slot, both sides of the lower end of the electromagnetic pin puller are fixed on both sides of the through slot, and the lead wire of the electromagnetic pin puller extends out of the through slot.

[0009] Furthermore, countersunk holes are arranged on the bottom plates on both sides of the through slot, and the countersunk holes are in the shape of long strips parallel to the through slot, and both sides of the lower end of the electromagnetic pin puller are fixed in the countersunk holes through connecting pieces.

[0010] Beneficial effects of the utility model:

[0011] 1. The utility model comprises a static spring assembly, an insulating gasket, a reset spring and an external display device to form a monitoring device during the vibration and impact test of the electromagnetic pin puller. The static spring assembly and the reset spring can be in contact or separated under different states of the pin head, so that the display device is turned on or off, that is, while realizing the conventional pin pulling function of the electromagnetic pin puller, it can be judged whether the pin of the electromagnetic pin puller is in place according to the state of the display device. The structure is simple and the operation is convenient.

[0012] 2. By designing the reset spring to be bent at a corresponding angle, when the pin of the electromagnetic pin puller is retracted, the reset spring and the static contact have a certain overtravel to ensure reliable contact. At the same time, the static spring is bent at a corresponding angle to increase its elasticity and avoid breakage caused by repeated force.

[0013] 3. In addition, a long countersunk hole is designed on the bottom plate so that the electromagnetic pin puller can adjust its position according to its size to adapt to the overall assembly.

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0017] Figure 3 It is a schematic diagram of the structure on the back of the base plate;

[0018] Figure 4 The structural diagram of the pillar is shown in FIG.

[0019] Figure 5 It is a structural schematic diagram of an electromagnetic pin puller;

[0020] Figure 6 This is a schematic diagram of the electromagnetic pin puller coil when it is not excited;

[0021] Figure 7 Schematic diagram of the electromagnetic pin puller coil in the energized state.

[0022] Description of reference numerals:

[0023] 1-base plate; 2-pillar; 3-electromagnetic pin puller; 4-static spring assembly; 5-insulating gasket; 6-reset spring; 7-cross pan head screw; 8-small cross pan head screw; 1-1-through slot; 1-2-countersunk hole; 2-1-boss; 3-1-coil lead; 3-2-pin; 3-3-annular groove; 4-1-static spring; 4-2-static contact; 4-3-first through hole; 4-4-second through hole. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with specific embodiments, but the implementation methods of the present invention are not limited thereto.

[0025] See also Figure 1 to Figure 7 The utility model embodiment discloses a vibration and impact test monitoring device for an electromagnetic pin puller, which specifically includes a base plate 1, a through slot 1-1 is opened in the middle of the base plate 1, and a pillar 2 and an electromagnetic pin puller 3 are fixed on the base plate 1 respectively, and the upper end of the pillar 2 has a boss 2-1, and a static spring assembly 4, an insulating gasket 5 and a reset spring 6 are installed on the boss 2-1 in sequence, and an M3×25 combined cross pan head screw 7 is passed through the through hole in the middle of the pillar 2 from top to bottom and the lower end of the pillar 2 is fastened in the through slot 1-1 in the middle of the base plate 1, so that the static spring assembly 4, the insulating gasket 5 and the reset spring 6 are fixed on the pillar 2; the lower ends of the electromagnetic pin puller 3 are fastened in the countersunk holes 1-2 on the base plate on both sides of the through slot 1-1 by M2×10 cross small pan head screws 8 and M2 hexagonal nuts, and the coil lead 3-1 of the electromagnetic pin puller 3 extends out of the through slot 1-1 to prevent the coil lead 3-1 from being damaged during the test.

[0026] At the same time, in order to meet the position adjustment of electromagnetic pin pullers of different sizes and adapt to assembly with other components, the countersunk hole 1-2 is designed as a long strip parallel to the through slot 1-1, so that the position of the M2×10 cross pan head screw and the M2 hexagonal nut can be adjusted according to the shape or size of the electromagnetic pin puller 3.

[0027] The static spring assembly 4 includes a static spring piece 4-1 and a static contact 4-2 installed at the cantilever end of the static spring piece 4-1. The static spring piece 4-1 is arranged opposite to the reset spring piece 6. The static contact 4-2 and the reset spring piece 6 contact or separate with each other in different states of the electromagnetic pin puller 3. The cantilever end of the reset spring piece 6 is connected to the pin 3-2 at the upper end of the electromagnetic pin puller 3. The static spring assembly 4 and the reset spring piece 6 are electrically connected to an external display device through circuits respectively; when the coil of the electromagnetic pin puller 3 is energized to retract the pin 3-2, the static contact 4-2 contacts the reset spring piece 6, so that the display device lights up; when the coil of the electromagnetic pin puller 3 is de-energized to extend the pin 3-2, the static contact 4-2 separates from the reset spring piece 6, so that the display device does not light up, thereby real-time monitoring of the movement state of the pin 3-2 is performed.

[0028] Preferably, the static contact 4-2 is made of a silver alloy material that is resistant to ablation and has high conductivity, and is designed as a "T"-shaped structure. The static spring piece 4-1 is made of a tin bronze strip material that is easy to conduct electricity, with a first through hole 4-3 at one end and a second through hole 4-4 at the other end and bent downward by 7°. The static spring piece 4-1 is installed on the boss 2-1 through the first through hole 4-3, and the static contact 4-2 is installed in the second through hole 4-4 and riveted together; the static spring piece 4-1 is bent downward by 7° to increase the elasticity of the static spring piece 4-1 and prevent the static spring piece 4-1 from being repeatedly stressed and causing breakage.

[0029] Furthermore, the cantilever end of the reset spring 6 is a U-shaped structure, and the end of the pin 3-2 has an annular groove 3-3. The U-shaped structure is clamped in the annular groove 3-3 of the pin 3-2 for easy fixation.

[0030] Preferably, the reset spring 6 is made of low-beryllium copper strip material that is easy to conduct electricity and has strong elasticity. It is installed on the boss 2-1 through a through hole at one end, and the end of the U-shaped structure at the other cantilever end is bent downward by 7°; the end of the reset spring 6 is bent by 7° to increase the pressure on the static contact 4-2 when the reset spring 6 contacts the static contact 4-2, thereby ensuring reliable contact between the two.

[0031] The working principle of the electromagnetic pin puller 3 vibration and impact test monitoring device is as follows:

[0032] like Figure 6~Figure 7As shown, the coil lead 3-1 of the electromagnetic pin puller 3 is not energized, the electromagnetic pin puller 3 is in an initial state, the reset spring 6 is not in contact with the static contact 4-2, the test circuit is not connected, and the external display device is not lit; when the rated excitation is applied to the coil lead 3-1 of the electromagnetic pin puller 3, the coil of the electromagnetic pin puller 3 generates an electromagnetic attraction, and its moving part drives the pin 3-2 to move downward, so that the annular groove 3-3 on the pin 3-2 drives the reset spring 6 to move downward. At this time, the reset spring 6 is in contact with the static contact 4-2, the test circuit is connected, the external display device is lit, and the feedback pin 3-2 moves into place.

[0033] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A vibration and impact test monitoring device for an electromagnetic pin puller, characterized in that: It includes a base plate, on which a pillar and an electromagnetic pin puller are respectively fixed, and a static spring assembly, an insulating gasket and a reset spring are installed in sequence on the upper end of the pillar, the static spring assembly and the reset spring are arranged opposite to each other, the cantilever end of the reset spring is connected to the pin at the upper end of the electromagnetic pin puller, and the static spring assembly and the reset spring are respectively electrically connected to a display device; when the electromagnetic pin puller is energized to retract the pin, the static spring assembly contacts the reset spring, and the display device is turned on; when the electromagnetic pin puller is de-energized to extend the pin, the static spring assembly is separated from the reset spring, and the display device is not turned on.

2. The electromagnetic pin puller vibration and impact test monitoring device according to claim 1, characterized in that: The static spring assembly includes a static spring sheet and a static contact point installed at the cantilever end of the static spring sheet, and is in contact with or separated from the reset spring sheet through the static contact point.

3. The electromagnetic pin puller vibration and impact test monitoring device according to claim 1, characterized in that: The cantilever end of the reset spring is a U-shaped structure, and the U-shaped structure is clamped in the annular groove of the pin.

4. The electromagnetic pin puller vibration and impact test monitoring device according to claim 2, characterized in that: The cantilever ends of the static spring piece and the reset spring piece are bent downward by 6-8 degrees.

5. The electromagnetic pin puller vibration and impact test monitoring device according to claim 4, characterized in that: A through slot is provided in the middle of the bottom plate, the lower end of the pillar is fixed in the through slot, the lower ends of the electromagnetic pin puller are fixed on both sides of the through slot, and the lead wire of the electromagnetic pin puller extends out of the through slot.

6. The electromagnetic pin puller vibration and impact test monitoring device according to claim 5, characterized in that: Countersunk holes are arranged on the bottom plates at both sides of the through slot, and the countersunk holes are in the shape of long strips parallel to the through slot, and both sides of the lower end of the electromagnetic pin puller are fixed in the countersunk holes through connecting pieces.

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