Ball falling machine testing machine

Abstract

The utility model discloses a ball falling machine testing machine comprising a ball falling control mechanism which comprises an electromagnet and an intermediate relay; the intermediate relay comprises a first pin, a second pin, a third pin, a fourth pin, a fifth pin, a sixth pin, a seventh pin, an eighth pin, a ninth pin, a tenth pin, an eleventh pin, a twelfth pin, a thirteenth pin and a fourteenth pin, and the first pin, the fifth pin, the ninth pin, the second pin, the sixth pin, the tenth pin, the third pin, the seventh pin, the eleventh pin, the fourth pin, the eighth pin and the twelfth pin are four groups of contacts respectively; wherein the first pin, the second pin, the third pin and the fourth pin are normally closed points, the fifth pin, the sixth pin, the seventh pin and the eighth pin are normally open points, and the ninth pin, the tenth pin, the eleventh pin and the twelfth pin are contact common ends; the eleventh pin and the twelfth pin are grounded, the ninth pin and the thirteenth pin are connected, the tenth pin and the fourteenth pin are connected, and the thirteenth pin and the fourteenth pin are used for being connected with a power supply; the third pin and the fifth pin are connected, the fourth pin and the sixth pin are connected, and the fifth pin and the sixth pin are connected with the electromagnet. According to the utility model, residual current in the electromagnet can be connected to the ground while the electromagnet is powered off to release the steel ball, so that the purpose of demagnetization is achieved.

Description

Technical Field

[0001] This utility model relates to the field of impact testing equipment technology, and in particular to a ball drop test machine. Background Technology

[0002] Existing ball drop testing machines generally use electromagnets to attract and release steel balls. However, during operation, the rapid opening and closing of the electromagnet coil's magnetic field causes electromagnetic induction and core magnetization, resulting in a significant residual magnetic field even after power is cut off—a phenomenon known as electromagnet remanence. This residual magnetism not only affects the normal operation of the equipment (delayed ball drop for large balls, failure to drop small balls) but also leads to increased temperatures in the coil windings and core, potentially causing the coil to burn out. Utility Model Content

[0003] To address the technical problems existing in the background art, this utility model proposes a ball drop test machine.

[0004] The present invention provides a ball dropping test machine, comprising: a ball dropping control mechanism, which includes an electromagnet and an intermediate relay;

[0005] The intermediate relay includes pins 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, and 14. Among them, pins 1, 5, and 9 form one group of contacts; pins 2, 6, and 10 form another group of contacts; pins 3, 7, and 11 form another group of contacts; and pins 4, 8, and 12 form a third group of contacts. Pins 1, 2, 3, and 4 are normally closed contacts; pins 5, 6, 7, and 8 are normally open contacts; and pins 9, 10, 11, and 12 are the common terminal for the contacts.

[0006] Pins 11 and 12 are grounded; pins 9 and 13 are connected; pins 10 and 14 are connected; pins 13 and 14 are used to connect to the positive and negative terminals of the power supply, respectively; pins 3 and 5 are connected; pins 4 and 6 are connected; pins 5 and 6 are connected to the two ends of the electromagnet, respectively.

[0007] When the intermediate relay is de-energized, the normally closed contact in each group of contacts is connected to the common terminal of the contacts; when the intermediate relay is energized, the normally open contact in each group of contacts is connected to the common terminal of the contacts.

[0008] Preferably, it also includes a base, a bracket, a mounting plate, and a drive mechanism;

[0009] The bracket is vertically fixed on the base, the mounting plate is slidably mounted on the bracket in the vertical direction, and the drive mechanism is connected to the mounting plate. The drive mechanism is used to drive the mounting base to slide in the vertical direction.

[0010] The electromagnet is mounted on the end of the mounting plate furthest from the center, with the electromagnet facing downwards.

[0011] Preferably, the drive mechanism is a cylinder, hydraulic cylinder, or lead screw linear drive mechanism.

[0012] Preferably, the intermediate relay is an intermediate relay with a manual button, which is used to energize the intermediate relay when pressed or to de-energize the intermediate relay after reset.

[0013] Preferably, the intermediate relay is an intermediate relay with a remote control, which is used to remotely control the power on and off of the intermediate relay.

[0014] In practice, when it is necessary to attract a steel ball, the fifth and ninth pins are closed, and the sixth and tenth pins are closed, so that the intermediate relay is energized, thereby energizing the electromagnet to generate magnetic force and attract the steel ball.

[0015] When the steel ball needs to be released, control pins 5 and 9 are disconnected (even if pins 9 and 1 are closed), and control pins 6 and 10 are disconnected (even if pins 6 and 2 are closed), so that the intermediate relay is de-energized, thereby de-energizing the electromagnet and causing the steel ball to fall. At the same time, since pins 11 and 12 are grounded, pins 3 and 5 are connected, and pins 4 and 6 are connected, and when in the de-energized state, pins 3 and 11 are connected, and pins 4 and 12 are connected, so that the electromagnet is grounded. The residual current in the electromagnet is connected to the ground through pins 3, 11 and 4 and 12 respectively, thereby eliminating the current and achieving the purpose of demagnetization.

[0016] The ball-dropping test machine proposed in this utility model modifies the existing intermediate relay so that when the electromagnet is de-energized and releases the steel ball, the residual current in the electromagnet can be connected to the ground, thereby achieving the purpose of demagnetization. The structure is simple and effective. Attached Figure Description

[0017] Figure 1 This is an electrical schematic diagram of an intermediate relay in an energized state according to one embodiment of the present invention.

[0018] Figure 2 This is an electrical schematic diagram of an intermediate relay in a power-off state according to one embodiment of the present invention. Detailed Implementation

[0019] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] Reference Figure 1 and Figure 2The present invention proposes a falling ball testing machine, comprising: a falling ball control mechanism,

[0021] The ball-dropping control mechanism includes an electromagnet and an intermediate relay;

[0022] The intermediate relay includes pins 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, and 14. Among them, pins 1, 5, and 9 form one group of contacts; pins 2, 6, and 10 form another group of contacts; pins 3, 7, and 11 form another group of contacts; and pins 4, 8, and 12 form a third group of contacts. Pins 1, 2, 3, and 4 are normally closed contacts; pins 5, 6, 7, and 8 are normally open contacts; and pins 9, 10, 11, and 12 are the common terminal for the contacts.

[0023] Pins 11 and 12 are grounded; pins 9 and 13 are connected; pins 10 and 14 are connected; pins 13 and 14 are used to connect to the positive and negative terminals of the power supply, respectively; pins 3 and 5 are connected; pins 4 and 6 are connected; pins 5 and 6 are connected to the two ends of the electromagnet, respectively.

[0024] When the intermediate relay is de-energized, the normally closed contact in each group of contacts is connected to the common terminal of the contacts; when the intermediate relay is energized, the normally open contact in each group of contacts is connected to the common terminal of the contacts.

[0025] In practice, when it is necessary to attract a steel ball, the fifth and ninth pins are closed, and the sixth and tenth pins are closed, so that the intermediate relay is energized, thereby energizing the electromagnet to generate magnetic force and attract the steel ball.

[0026] When the steel ball needs to be released, control pins 5 and 9 are disconnected (even if pins 9 and 1 are closed), and control pins 6 and 10 are disconnected (even if pins 6 and 2 are closed), so that the intermediate relay is de-energized, thereby de-energizing the electromagnet and causing the steel ball to fall. At the same time, since pins 11 and 12 are grounded, pins 3 and 5 are connected, and pins 4 and 6 are connected, and when in the de-energized state, pins 3 and 11 are connected, and pins 4 and 12 are connected, so that the electromagnet is grounded. The residual current in the electromagnet is connected to the ground through pins 3, 11 and 4 and 12 respectively, thereby eliminating the current and achieving the purpose of demagnetization.

[0027] This invention modifies an existing intermediate relay, enabling the electromagnet to connect the residual current in the electromagnet to the ground while releasing the steel ball upon de-energization, thereby achieving demagnetization. The structure is simple and effective.

[0028] Of course, the intermediate relay in this embodiment includes 14 pins, and in other embodiments, the intermediate relay may include more than 14 pins.

[0029] In this embodiment, it also includes a base, a bracket, a mounting plate, and a drive mechanism;

[0030] The bracket is vertically fixed on the base, the mounting plate is slidably mounted on the bracket in the vertical direction, and the drive mechanism is connected to the mounting plate. The drive mechanism is used to drive the mounting base to slide in the vertical direction.

[0031] The electromagnet is mounted on the end of the mounting plate furthest from the center, with the electromagnet facing downwards, to facilitate the attraction and release of the steel ball.

[0032] The drive mechanism is a cylinder, hydraulic cylinder, or lead screw linear drive mechanism in the prior art, which will not be described in detail here.

[0033] In one embodiment, the intermediate relay is an intermediate relay with a manual button, which is used to energize the intermediate relay when pressed or to de-energize the intermediate relay after reset.

[0034] When using an intermediate relay with a manual button, the user needs to get up to operate the button, which is inefficient and can cause fatigue for the user over a long period of time. To solve this problem, in this embodiment, the intermediate relay is an intermediate relay with a remote control, which is used to remotely control the power on and off of the intermediate relay.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A ball-dropping test machine, characterized in that, include: The ball-falling control mechanism includes an electromagnet and an intermediate relay. The intermediate relay includes pins 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, and 14. Among them, pins 1, 5, and 9 form one group of contacts; pins 2, 6, and 10 form another group of contacts; pins 3, 7, and 11 form another group of contacts; and pins 4, 8, and 12 form a third group of contacts. Pins 1, 2, 3, and 4 are normally closed contacts; pins 5, 6, 7, and 8 are normally open contacts; and pins 9, 10, 11, and 12 are the common terminal for the contacts. Pins 11 and 12 are grounded; pins 9 and 13 are connected; pins 10 and 14 are connected; pins 13 and 14 are used to connect to the positive and negative terminals of the power supply, respectively; pins 3 and 5 are connected; pins 4 and 6 are connected; pins 5 and 6 are connected to the two ends of the electromagnet, respectively. When the intermediate relay is de-energized, the normally closed contact in each group of contacts is connected to the common terminal of the contacts; when the intermediate relay is energized, the normally open contact in each group of contacts is connected to the common terminal of the contacts.

2. The ball-dropping test machine according to claim 1, characterized in that, It also includes a base, bracket, mounting plate, and drive mechanism; The bracket is vertically fixed on the base, the mounting plate is slidably mounted on the bracket in the vertical direction, and the drive mechanism is connected to the mounting plate. The drive mechanism is used to drive the mounting base to slide in the vertical direction. The electromagnet is mounted on the end of the mounting plate furthest from the center, with the electromagnet facing downwards.

3. The ball-dropping test machine according to claim 2, characterized in that, The drive mechanism is a linear drive mechanism consisting of a cylinder, hydraulic cylinder, or lead screw.

4. The ball-dropping test machine according to claim 1, characterized in that, The intermediate relay is an intermediate relay with a manual button. The manual button is used to energize the intermediate relay when pressed or to de-energize the intermediate relay after reset.

5. The ball-dropping test machine according to claim 1 or 4, characterized in that, The intermediate relay is an intermediate relay with a remote control, which is used to remotely control the power on and off of the intermediate relay.

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