Electromagnet force measuring tool

Abstract

The utility model discloses an electromagnet force measuring tool, which is characterized in that a base plate is provided with a support capable of moving linearly, and the support is connected with a dynamometer; supports for connecting the electromagnet are arranged at one end of the dynamometer at intervals, and a position adjusting structure is arranged at the other end of the dynamometer and can push the dynamometer towards the direction close to the electromagnet; during force measurement, the position adjusting structure pushes the dynamometer to a designated position, the spring rod of the electromagnet pops up or the ejector rod pops up, and a corresponding force value can be detected. According to the utility model, the actual verticality of the electromagnet in use can be accurately measured, actual force values corresponding to all compression amounts of a spring of the electromagnet can be retrieved, and actual ejection force values of an ejection rod of the electromagnet can also be retrieved; the electromagnet is accurately controlled on the basis of evaluation and judgment of an actual force value, so that the control accuracy of the electromagnet is ensured, and the reliability of opening and closing actions is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnet force measuring devices, in particular to an electromagnet force measuring tool. Background Art

[0002] The opening and closing actions of a circuit breaker mechanism are typically accomplished by electromagnets. The relationship between the electromagnet's magnetic force and the tripping force determines whether the circuit breaker can trip. That is, when the electromagnet's magnetic force is greater than the tripping force, the circuit breaker can trip; when the electromagnet's magnetic force is less than the tripping force, the circuit breaker cannot trip. The closing tripping force of a circuit breaker is generally transmitted by the energy storage spring force through the transmission mechanism and acts on the closing trip, while the opening tripping force is generally transmitted by the contact spring reaction force through the transmission mechanism and acts on the opening trip. Theoretical values ​​for the electromagnet's magnetic force and tripping force can be calculated through force analysis. However, due to the many factors that affect the electromagnet's magnetic force and the complexity of the situation, the analysis and calculation of the electromagnet's magnetic force often ignores many actual factors and simplifies the calculation to obtain a value. This value differs from the actual value when the electromagnet is in use. This difference may lead to the inability to accurately control the electromagnet, thereby affecting the reliability of the opening and closing actions. Utility Model Content

[0003] In order to solve the problem that the calculated value of the magnetic force of the above-mentioned existing electromagnets is different from the actual value, the applicant provides a rationally structured electromagnet force measuring tool to accurately measure the magnet of the electromagnet, ensure the accuracy of the electromagnet control, and improve the reliability of the opening and closing actions.

[0004] The technical solutions adopted in this utility model are as follows:

[0005] An electromagnet force measuring tool has a linearly movable support provided on a bottom plate, to which a dynamometer is connected; a bracket for connecting to an electromagnet is provided at intervals at one end of the dynamometer, and a position adjustment structure is provided at the other end of the dynamometer, which can push the dynamometer toward the electromagnet; when measuring force, the position adjustment structure pushes the dynamometer to a specified position, and the spring rod of the electromagnet pops out or the ejection rod is pushed out, so that the corresponding force value can be detected.

[0006] As a further improvement of the above technical solution:

[0007] A support plate is arranged on the bottom plate at one end of the dynamometer, and an adjusting screw is connected to the support plate, which forms a position adjustment structure.

[0008] The support is an L-shaped plate, including a horizontal plate and a vertical plate. The vertical plate is located on the side close to the support plate and stands upright between the dynamometer and the adjusting screw.

[0009] A push rod is provided on one side of the dynamometer close to the bracket.

[0010] The outer end of the push rod is sleeved with a push head.

[0011] The top pressure head is a T-shaped piece.

[0012] The center axis of the ejector rod is coaxial with the center axes of the spring rod and the ejector rod of the electromagnet.

[0013] The bottom plate is connected with a slide rail, the support is connected with a slider assembly, and the support is slidably arranged on the slide rail through the slider assembly.

[0014] The direction of the slide rail is parallel to the axial direction of the spring rod and the ejection rod of the electromagnet.

[0015] The slide rails, support plates and brackets are arranged at intervals.

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model can accurately measure the actual verticality of the electromagnet when in use, and can retrieve the actual force value corresponding to each compression amount of the electromagnet's spring, and can also retrieve the actual ejection force value of the electromagnet's ejection rod. The electromagnet is accurately controlled based on the evaluation and judgment of the actual force value, thereby ensuring the accuracy of the electromagnet control and improving the reliability of the opening and closing actions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the utility model for measuring spring force value.

[0019] Figure 2 for Figure 1 It is the main view.

[0020] Figure 3 This is a schematic diagram of the utility model for measuring the core ejection force.

[0021] In the figure: 1, bottom plate; 2, slide rail; 3, slider assembly; 4, support; 41, horizontal plate; 42, vertical plate; 5, dynamometer; 51, push rod; 6, push head; 7, support plate; 8, adjustment screw; 9, bracket;

[0022] 10. Electromagnet; 11. Spring rod; 12. Spring; 13. Ejector rod. DETAILED DESCRIPTION

[0023] The specific implementation of the present utility model will be described below with reference to the accompanying drawings.

[0024] like Figures 1 to 3 As shown, the electromagnet force measuring fixture of the present invention is suitable for measuring the force values ​​corresponding to various compression amounts of the spring 12 of the electromagnet 10 and the ejection force value of the ejector rod 13 .

[0025] The utility model has a slide rail 2 fixedly connected to a base plate 1, a slider assembly 3 movably slidably mounted on the slide rail 2, a support 4 fixedly connected to the slider assembly 3, a dynamometer 5 fixed to the support 4, and the support 4 and the dynamometer 5 can slide on the slide rail 2 along with the slider assembly 3. On the base plate 1, a support plate 7 is fixedly mounted on the outside of one end of the slide rail 2, and a bracket 9 is fixedly mounted on the outside of the other end of the slide rail 2. The slide rail 2, the support plate 7, and the bracket 9 are spaced apart. An adjusting screw 8 is threadedly connected to the support plate 7. The adjusting screw 8 can be adjusted left and right in the direction of the slide rail 2 to adjust the position of the support 4. The bracket 9 is used to connect an electromagnet 10. The axial direction of the spring rod 11 and the ejection rod 13 of the electromagnet 10 is parallel to the direction of the slide rail 2.

[0026] The support 4 is an L-shaped plate, comprising a horizontal plate 41 and a vertical plate 42. The vertical plate 42 is located on the side near the support plate 7. The dynamometer 5 is fixedly connected to the horizontal plate 41, and the vertical plate 42 stands upright between the dynamometer 5 and the adjustment screw 8. When the adjustment screw 8 is rotated to adjust the position, the adjustment screw 8 abuts against the vertical plate 42, and the support 4 is pushed to move and adjust the position through the vertical plate 42. The vertical plate 42 serves as a load-bearing part, separated from the outside of the dynamometer 5 and in direct contact with the adjustment screw 8. This prevents the dynamometer 5 from directly colliding with the adjustment screw 8 during force measurement and damaging the dynamometer 5.

[0027] A push rod 51 extends from the side of the dynamometer 5 closest to the bracket 9 (away from the support plate 7). When the electromagnet 10 is mounted on the bracket 9, the central axis of the push rod 51 is coaxial with the central axes of the electromagnet 10's spring rod 11 and ejector rod 13. A pressing head 6 is sleeved over the outer end of the push rod 51 to prevent direct impact between the spring rod 11 and ejector rod 13, thereby preventing damage to the dynamometer 5. The pressing head 6 is a T-shaped piece, with a larger cross-sectional area on the end facing the electromagnet 10, providing a larger load-bearing area and more accurate and reliable force measurement.

[0028] like Figure 1 、 Figure 2 As shown, the present invention is used to detect the force values ​​corresponding to various compression amounts of the spring 12 of the electromagnet 10: first, the electromagnet 10 is fixed to the bracket 9, with one side of the spring rod 11 and the spring 12 facing the dynamometer 5; the adjusting screw 8 is rotated, and the adjusting screw 8 pushes the support 4 and the dynamometer 5 toward the electromagnet 10 to a specified position, which is the position corresponding to the compression amount of the spring 12 to be retrieved; the spring rod 11 of the electromagnet 10 is pushed out under the elastic force of the spring 12, and the force value generated by the spring rod 11 hitting the pressing head 6 is the force value of the spring 12 at that compression amount, which is displayed on the dynamometer 5. By adjusting the position of the support 4 and the dynamometer 5 through the adjusting screw 8, the force value corresponding to the spring 12 at various compression amounts can be obtained.

[0029] like Figure 3As shown, the utility model is used to detect the ejection force value of the ejector rod 13 of the electromagnet 10: first, the electromagnet 10 is fixed to the bracket 9, with one side of the ejector rod 13 facing the dynamometer 5; the adjusting screw 8 is rotated, and the adjusting screw 8 pushes the support 4 and the dynamometer 5 toward the electromagnet 10 to a specified position, which corresponds to the position where the ejector rod 13 is ejected; the ejector rod 13 of the electromagnet 10 is ejected, and the force value generated by the ejector rod 13 hitting the top pressure head 6 is the ejection force value of the ejector rod 13, which is displayed on the dynamometer 5.

[0030] The utility model can accurately measure the actual verticality of the electromagnet 10 when in use, and can retrieve the actual force value corresponding to each compression amount of the spring 12 of the electromagnet 10, and can also retrieve the actual ejection force value of the ejection rod 13 of the electromagnet 10. The electromagnet 10 is accurately controlled based on the evaluation and judgment of the actual force value, thereby ensuring the accuracy of the control of the electromagnet 10 and improving the reliability of the opening and closing actions.

[0031] The above description is an explanation of the present invention, not a limitation of the present invention. The present invention may be modified in any form without violating the spirit of the present invention.

Claims

1. An electromagnet force measuring tool, characterized in that: A linearly movable support (4) is provided on the bottom plate (1), and a dynamometer (5) is connected to the support (4); a bracket (9) for connecting to an electromagnet (10) is provided at one end of the dynamometer (5), and a position adjustment structure is provided at the other end of the dynamometer (5), and the position adjustment structure can push the dynamometer (5) toward the electromagnet (10); when measuring force, the position adjustment structure pushes the dynamometer (5) to a specified position, and the spring rod (11) of the electromagnet (10) pops out or the ejection rod (13) is ejected, and the corresponding force value can be detected.

2. The electromagnet force measuring fixture according to claim 1, characterized in that: On the bottom plate (1), a support plate (7) is provided at one end of the dynamometer (5), and an adjusting screw (8) is connected to the support plate (7), and the adjusting screw (8) constitutes a position adjustment structure.

3. The electromagnet force measuring fixture according to claim 1, characterized in that: The support (4) is an L-shaped plate, comprising a horizontal plate (41) and a vertical plate (42), wherein the vertical plate (42) is located on a side close to the support plate (7) and is erected between the dynamometer (5) and the adjusting screw (8).

4. The electromagnet force measuring fixture according to claim 1, characterized in that: A push rod (51) is provided on one side of the dynamometer (5) close to the bracket (9).

5. The electromagnet force measuring fixture according to claim 4, characterized in that: The outer end of the push rod (51) is sleeved with a push head (6).

6. The electromagnet force measuring fixture according to claim 5, characterized in that: The top pressure head (6) is a T-shaped piece.

7. The electromagnet force measuring fixture according to claim 4, characterized in that: The central axis of the ejector rod (51) is coaxial with the central axis of the spring rod (11) and the ejector rod (13) of the electromagnet (10).

8. The electromagnet force measuring fixture according to claim 1, characterized in that: The bottom plate (1) is connected to a slide rail (2), the support (4) is connected to a slider assembly (3), and the support (4) is slidably mounted on the slide rail (2) via the slider assembly (3).

9. The electromagnet force measuring fixture according to claim 8, characterized in that: The direction of the slide rail (2) is parallel to the axial direction of the spring rod (11) and the ejection rod (13) of the electromagnet (10).

10. The electromagnet force measuring fixture according to claim 8, characterized in that: The slide rail (2), the support plate (7) and the bracket (9) are arranged at intervals.

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