Electromagnetic switch based on short-circuit automatic opening

Abstract

The utility model relates to the related technical field of electrical equipment, in particular to an electromagnetic switch based on short-circuit automatic opening, which comprises a working table, a support frame fixedly arranged on the working table, and a control panel arranged at the bottom of the working table, the magnet core is arranged on the supporting frame in a sliding mode, and the magnet core is arranged in the axial direction of the electromagnetic assembly; when the electromagnetic assembly is short-circuited, magnetism generated on the magnet core disappears, and when the magnet core moves downwards, the control panel is extruded, so that the control panel deflects, the electromagnetic switch can be automatically tripped out after the short-circuit condition occurs, and under the action of the locking piece, the electromagnetic switch can be automatically switched on and switched off. Therefore, the position of the magnet core is locked, the conduction of a circuit can be recovered only after a worker completely eliminates a fault, and the possibility of aggravated damage of a wire, a switch and other elements is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical fields of electrical equipment, and concretely relates to an electromagnetic switch based on automatic tripping of short circuit. BACKGROUND

[0002] The rock mass or concrete needs to be pre-broken in the aspects of city concrete beam demolition, and tunnel rock and mine rock pre-cracking, thereby facilitating further processing.

[0003] In the rock breaking process, the high-voltage energy storage pulse power supplies discharges to the controllable shock wave transducer, and a short pulse high voltage is formed between the discharge electrodes of the controllable shock wave transducer. The pulse high voltage breaks through the liquid medium to generate a plasma channel. When the electric energy is injected into the plasma channel, high temperature and high pressure are generated to make the plasma channel expand outward to generate a pulse pressure wave. The high-voltage energy storage pulse power supplies discharges through the charge-discharge switch, and therefore the reliability of the charge-discharge switch is required to be high, and the electromagnetic switch module can be used.

[0004] The electromagnetic switch device is an electric switch device used for connecting a converter to turn on or turn off a main circuit according to a slight change of input current. In the electromagnetic switch device, a contact point is moved by electromagnetic force to apply current or cut off current. The working principle of the electromagnetic switch is as follows: a magnetic force is generated by an excitation coil to form a magnetic flux loop and make a fixed core have a magnetic force, a movable core moves under the attraction of the fixed core with the magnetic force, and the movable core moves the movable contact to contact or not contact the fixed contact through a shaft, so as to realize the connection and disconnection of electricity.

[0005] When the circuit appears a short circuit, the release in the electromagnetic switch automatically disconnects the circuit to protect the circuit from damage, but once the circuit is automatically turned on under the condition that the fault is not completely eliminated, the wires, switches and other elements in the circuit will be greatly harmed, and the normal operation of the electrical equipment is affected. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing an electromagnetic switch based on automatic tripping of short circuit to solve the problems in the above background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] An electromagnetic switch based on automatic tripping of short circuit, comprising a workbench and a support frame fixedly installed on the workbench, the support frame is provided with an electromagnetic assembly, and further comprising a control panel arranged at the bottom of the workbench;

[0009] A magnet core is slidably arranged on the support frame, the magnet core is arranged along the axial direction of the electromagnetic assembly and can be attracted to each other with the electromagnetic assembly;

[0010] Locking piece, installed on the support frame, connecting the magnet core, the magnet core extrusion control panel after tripping, the position of the magnet core is locked.

[0011] The electromagnetic switch based on automatic tripping of short circuit as described above: the electromagnetic assembly includes a fixedly arranged iron core on the support frame, the iron core is wound with a wire, and the two ends of the wire are connected with a control panel fixedly installed on the workbench.

[0012] The electromagnetic switch based on automatic tripping of short circuit as described above: a hinged seat is fixedly arranged at the bottom of the workbench, and one end of the control panel is rotationally connected with the hinged seat.

[0013] The electromagnetic switch based on automatic tripping of short circuit as described above: a guide plate is slidably arranged on the support frame, the guide plate is fixedly connected with the magnet core, and at least one set of sliding blocks is symmetrically arranged at the two ends of the guide plate; and a sliding groove is formed in the support frame and slidably matched with the sliding blocks.

[0014] The electromagnetic switch based on automatic tripping of short circuit as described above: two sets of elastic extrusion pieces are symmetrically arranged between the guide plate and the bottom of the support frame.

[0015] The electromagnetic switch based on automatic tripping of short circuit as described above: the elastic extrusion piece comprises a plug-in barrel and a plug-in rod, one end of the plug-in rod is slidably arranged in the plug-in barrel, the plug-in barrel is fixed away from one end of the plug-in rod and the support frame, and the other end of the plug-in rod away from the plug-in barrel is fixed with the guide plate.

[0016] Further comprising a first spring, the first spring is arranged in the plug-in barrel, one end of the first spring is fixed with the inside bottom of the plug-in barrel, and the other end is fixed with the plug-in rod.

[0017] The electromagnetic switch based on automatic tripping of short circuit as described above: the locking piece comprises a sleeve fixedly installed on the support frame, at least one set of limiting grooves is formed on the inner wall of the sleeve, a movable plate is arranged along the axial direction of the sleeve, a convex column adapted to the limiting groove is arranged on the movable plate, and the movable plate is rotationally connected with the magnet core.

[0018] Further comprising a second spring, the second spring is arranged in the sleeve, one end of the second spring is in abutment with the inside bottom of the sleeve, and the other end is in abutment with the movable plate.

[0019] Compared with the prior art, the electromagnetic switch based on automatic tripping of short circuit has the advantages that:

[0020] When the electromagnetic assembly appears short circuit, the magnetism generated to the magnet core disappears, under the action of the elastic extrusion piece, the magnet core moves downward, the magnet core moves downward to extrude the control board, so that the control board deflects, to realize that the electromagnetic switch can automatically trip after the short circuit occurs, and under the action of the locking piece, to realize the locking of the position of the magnet core, to ensure that the circuit can be restored to conduction only after the staff completely eliminates the fault, to prevent the possibility of damage to the wires, switches and other elements. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the electromagnetic switch based on short circuit automatic tripping.

[0022] Figure 2 It is a structural schematic diagram of another angle in the electromagnetic switch based on short circuit automatic tripping.

[0023] Figure 3 It is a structural schematic diagram of the control in the electromagnetic switch based on short circuit automatic tripping.

[0024] Figure 4 It is a structural schematic diagram of the magnet core and the elastic extrusion piece in the electromagnetic switch based on short circuit automatic tripping.

[0025] Figure 5 It is a structural schematic diagram of the magnet core and the locking piece in the electromagnetic switch based on short circuit automatic tripping.

[0026] Figure 6 It is a structural schematic diagram of the sleeve and the movable plate in the electromagnetic switch based on short circuit automatic tripping.

[0027] In the figure: 1, workbench; 2, support frame; 201, sliding groove; 3, control board; 4, hinged seat; 5, limiting seat; 6, iron core; 7, wire; 8, magnet core; 9, guide plate; 901, sliding block; 10, extrusion rod; 11, plug-in rod; 12, first spring; 13, plug-in barrel; 14, sleeve; 1401, limiting groove; 15, movable plate; 1501, protruding column; 16, second spring; 17, control panel. DETAILED DESCRIPTION

[0028] Various exemplary embodiments, features, and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numbers in the drawings represent functionally the same or similar elements. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0029] The word "exemplary" is used herein in the sense of being an example, instance, or illustration. Any implementation described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations.

[0030] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. Those skilled in the art should understand that the present application can also be implemented without certain specific details. In some examples, methods, means, elements well known to those skilled in the art are not described in detail, in order to highlight the main ideas of the present application.

[0031] Please refer to Figures 1-6 In the embodiment of the utility model, an electromagnetic switch based on automatic tripping of short circuit, including workbench 1, support frame 2, control panel 3, magnet core 8, electromagnetic assembly and locking part.

[0032] Specific as follows, please refer to Figure 1 、 Figure 3 And Figure 5 , including;

[0033] Workbench 1 and the support frame 2 fixedly installed on the workbench 1, the support frame 2 is provided with electromagnetic assembly, still includes the control panel 3 of setting at the bottom of the workbench 1;

[0034] Magnet core 8, slidingly arranged on the support frame 2, the magnet core 8 is arranged along the axial direction of the electromagnetic assembly and can be attracted to each other with the electromagnetic assembly;

[0035] Locking part, installed on the support frame 2, connects the magnet core 8, the magnet core 8 extrudes the control panel 3 tripping, and the position of the magnet core 8 is locked.

[0036] In detail, in the embodiment, the electromagnetic switch based on automatic tripping of short circuit is used, when the electromagnetic assembly appears short circuit, the magnetism generated by the magnet core disappears, at this time, under the action of the elastic extrusion part, the magnet core 8 moves downward, the magnet core 8 extrudes the control panel 3 when moving downward, so that the control panel 3 deflects, to realize that the electromagnetic switch can automatically trip after short circuit occurs, and under the action of the locking part, the position of the magnet core 8 is locked, to ensure that the circuit can be restored to be conducted only after the staff completely eliminates the fault, to prevent the possibility of damage of the wire, switch and other elements.

[0037] As a further scheme of the utility model, please refer to Figure 2 The electromagnetic assembly includes the iron core 6 fixedly arranged on the support frame 2, the iron core 6 is wound with the wire 7, and the two ends of the wire 7 are connected with the control panel 17 fixedly installed on the workbench 1.

[0038] The conductor 7, in the case of normal energization, makes the wound iron core 6 have magnetism, when the current passes through the conductor 7, a magnetic field is generated around the conductor 7, and the iron core 6, as a paramagnetic material, is magnetized by the magnetic field, thereby obtaining magnetism, and once the conductor 7 is short-circuited, the magnetism disappears with the short-circuit of the current.

[0039] Preferably, the bottom of the workbench 1 is fixedly provided with a hinge seat 4, and one end of the control plate 3 is rotationally connected with the hinge seat 4.

[0040] Preferably, the bottom of the workbench 1 is provided with a limiting seat 5, and the limiting seat 5 is mainly arranged to limit the deflection of the control plate 3, so as to avoid the control plate 3 from being separated from the limiting seat 5.

[0041] As a further scheme of the utility model, a guide plate 9 is slidably arranged on the support frame 2, the guide plate 9 is fixedly connected with the magnetic core 8, at least one set of sliding blocks 901 is symmetrically arranged at two ends of the guide plate 9, and a sliding groove 201 is formed on the support frame 2 and slidably matched with the sliding blocks 901.

[0042] The existence of the sliding blocks 901 and the sliding groove 201 enables the guide plate 9 to be directionally moved along the direction of the sliding groove 201, and when the movable plate 15 rotates, the magnetic core 8 is prevented from synchronously rotating.

[0043] As a further scheme of the utility model, please refer to Figure 2 and Figure 4 , two sets of elastic extrusion pieces are symmetrically arranged between the guide plate 9 and the bottom of the support frame 2.

[0044] The elastic extrusion piece comprises a plug-in barrel 13 and a plug-in rod 11, one end of the plug-in rod 11 is slidably arranged in the plug-in barrel 13, the plug-in barrel 13 is fixed away from one end of the plug-in rod 11, and the other end of the plug-in rod 11 away from the plug-in barrel 13 is fixed with the guide plate 9.

[0045] Further comprising a first spring 12, the first spring 12 is arranged in the plug-in barrel 13, one end of the first spring 12 is fixed with the inside bottom of the plug-in barrel 13, and the other end is fixed with the plug-in rod 11.

[0046] Preferably, the magnetic core 8 is fixedly provided with an extrusion rod 10 in an L-shaped structure, and the extrusion rod 10 is in abutting state with the control plate 3.

[0047] In the initial state, the first spring 12 is in the stretched state, and under the condition that the conductor 7 is normally energized, the attraction force of the iron core 6 to the magnetic core 8 is greater than the elastic potential energy of the first spring 12 itself, and when the attraction force of the iron core 6 to the magnetic core 8 disappears, under the elastic action of the first spring 12, the magnetic core 8 moves downward, and when the magnetic core 8 moves downward, the extrusion rod 10 moves downward synchronously, so that the control plate 3 is deflected, so as to realize that the electromagnetic switch can automatically trip when short-circuiting, and further increase the protection of the circuit.

[0048] As a further scheme of the utility model, please refer to Figure 5 and Figure 6 The locking piece comprises a sleeve 14 fixedly installed on the support frame 2, at least one set of limiting grooves 1401 are formed on the inner wall of the sleeve 14, a movable plate 15 is arranged along the axial direction of the sleeve 14, a convex column 1501 adapted to the limiting grooves 1401 is arranged on the movable plate 15, and the movable plate 15 is rotationally connected with the magnetic core 8.

[0049] Further comprising a second spring 16, the second spring 16 is arranged in the sleeve 14, one end of the second spring 16 abuts against the inner bottom of the sleeve 14, and the other end abuts against the movable plate 15.

[0050] Preferably, the limiting grooves 1401 are divided into a first slot, an arc-shaped inclined groove and a second slot.

[0051] In detail, when the magnetic core 8 moves downward, the movable plate 15 is extruded, when the movable plate 15 moves downward relative to the sleeve 14, the convex column 1501 always moves in the limiting grooves 1401, in the initial state, the convex column 1501 is in the first slot, when the convex column 1501 moves in the first slot, the movable plate 15 always keeps the state of vertical downward movement, when the convex column 1501 slides into the arc-shaped inclined groove, the movable plate 15 rotates relative to the sleeve 14, when the convex column 1501 moves to the end of the arc-shaped inclined groove, at this time, the elastic potential energy of the second spring 16 is greater than that of the first spring 12, so that the convex column 1501 slides into the second slot, so as to realize the locking of the position of the magnetic core 8.

[0052] It is worth noting that: the convex column 1501 slides into the second slot and rises by a small height, only realizing the locking of the movable plate 15, and the influence on the control plate 3 can be ignored.

[0053] It is apparent for a person skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, the scope of the present application being defined by the claims appended hereto rather than by the above description, and all the changes which fall within the meaning and the scope of the equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims to the figures in which the reference signs are used.

[0054] Furthermore, it should be understood that although the present specification describes exemplary embodiments, not every embodiment contains only one independent technical solution, and the present specification is described in this way only for the sake of clarity, and a person skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that a person skilled in the art can understand.

Claims

1. An electromagnetic switch based on short-circuit automatic tripping, comprising a workbench (1) and a support frame (2) fixedly installed on the workbench (1), an electromagnetic assembly being arranged on the support frame (2), and a control panel (3) arranged at the bottom of the workbench (1), characterized in that ； A magnetic core (8) is slidably arranged on the support frame (2), and the magnetic core (8) is arranged along the axial direction of the electromagnetic assembly and can be attracted to the electromagnetic assembly; A locking member is mounted on the support frame (2) and connected to the magnetic core (8), and the position of the magnetic core (8) is locked after the magnetic core (8) is pressed against the control panel (3).

2. An electromagnetic switch based on short-circuit automatic opening according to claim 1, characterized in that, The electromagnetic assembly comprises an iron core (6) fixedly arranged on the support frame (2), and a wire (7) is wound around the iron core (6), and the two ends of the wire (7) are connected to a control panel (17) fixedly mounted on the workbench (1).

3. The electromagnetic switch based on short-circuit automatic tripping according to claim 1, characterized in that, A hinge seat (4) is fixedly arranged at the bottom of the workbench (1), and one end of the control panel (3) is rotatably connected to the hinge seat (4).

4. The electromagnetic switch based on short-circuit automatic tripping according to claim 1, characterized in that, A guide plate (9) is slidably arranged on the support frame (2), and the guide plate (9) is fixedly connected to the magnetic core (8), and at least one set of sliding blocks (901) is symmetrically arranged at the two ends of the guide plate (9), and a sliding groove (201) is formed on the support frame (2) and slidably matched with the sliding blocks (901).

5. An electromagnetic switch based on short-circuit automatic opening according to claim 4, characterized in that, Two sets of elastic extrusion members are symmetrically arranged between the guide plate (9) and the bottom of the support frame (2).

6. An electromagnetic switch based on short-circuit automatic opening according to claim 5, characterized in that, The elastic extrusion member comprises a plug-in barrel (13) and a plug-in rod (11), one end of the plug-in rod (11) is slidably arranged in the plug-in barrel (13), the plug-in barrel (13) is fixedly arranged away from one end of the plug-in rod (11), and the other end of the plug-in rod (11) is fixedly arranged away from the guide plate (9). A first spring (12) is arranged in the plug-in barrel (13), one end of the first spring (12) is fixedly arranged on the inner side of the plug-in barrel (13), and the other end of the first spring (12) is fixedly arranged on the plug-in rod (11).

7. The electromagnetic switch based on short-circuit automatic tripping according to claim 1, characterized in that, The locking member comprises a sleeve (14) fixedly arranged on the support frame (2), at least one set of limiting grooves (1401) is formed on the inner wall of the sleeve (14), a movable plate (15) is arranged along the axial direction of the sleeve (14), a protruding column (1501) is arranged on the movable plate (15) and matched with the limiting grooves (1401), and the movable plate (15) is rotatably connected to the magnetic core (8). A second spring (16) is arranged in the sleeve (14), one end of the second spring (16) is abutted against the inner side of the sleeve (14), and the other end of the second spring (16) is abutted against the movable plate (15).

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