Circuit breaker for frequency converter of motor of coal feeder

Abstract

The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker for a frequency converter of a motor of a coal feeder, which comprises a main body comprising a fixed wall body; the connecting mechanism comprises a circuit breaker main body, the circuit breaker main body is connected to the surface of a fixed wall body, a connecting groove is formed in the surface of the circuit breaker main body, a limiting strip is fixedly connected to the surface of the connecting groove, a pop-up piece is fixedly connected to the surface of the connecting groove, a fixed connecting block A is fixedly connected to the surface of the connecting groove, and the fixed connecting block A is fixedly connected to the surface of the circuit breaker main body. And the surface of the connecting groove is movably connected with a fixed connecting block B, and the surface of the fixed connecting block B is fixedly connected with a fixed connecting block C. According to the utility model, the limiting strip is fixed under the action of the circuit breaker main body through the limiting strip, the pop-up sheet is fixed under the action of the circuit breaker main body through the pop-up sheet, and the fixed connection block A is fixed under the action of the circuit breaker main body through the fixed connection block A.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker for a coal feeder motor frequency converter. Background Art

[0002] The frequency converter is an electric control device that uses frequency conversion technology and microelectronics technology to control AC motors by changing the frequency of the motor's working power supply. A circuit breaker is a switch device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The boundary between high and low voltage is relatively vague, and those above 3kV are generally called high-voltage electrical appliances. However, the existing motors directly connected to the frequency converter need to be disconnected to shake and test the insulation. The maintenance personnel have a high workload and low work efficiency. When a ground fault occurs in the motor, the fault point cannot be quickly found. Utility Model Content

[0003] The purpose of the utility model is to provide a circuit breaker for a coal feeder motor inverter to solve the problem proposed in the above background technology that the existing motor directly connected to the inverter needs to be disconnected when testing the insulation, the maintenance personnel have a high workload and low work efficiency, and the fault point cannot be quickly found when a ground fault occurs in the motor.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solution, a circuit breaker for a coal feeder motor inverter, comprising:

[0005] The main body, including the fixed wall;

[0006] The connecting mechanism comprises a circuit breaker body, wherein the circuit breaker body is connected to the surface of a fixed wall, a connecting groove is opened on the surface of the circuit breaker body, a limiting strip is fixedly connected to the surface of the connecting groove, a pop-up sheet is fixedly connected to the surface of the connecting groove, a fixed connecting block A is fixedly connected to the surface of the connecting groove, a fixed connecting block B is movably connected to the surface of the connecting groove, a fixed connecting block C is fixedly connected to the surface of the fixed connecting block B, a connecting ring is snap-connected to the surface of the fixed connecting block C, a connecting member A is fixedly connected to one end of the connecting ring, and a connecting member B is fixedly connected to the surface of the connecting member A.

[0007] Preferably, the circuit breaker body is in a block shape and acts on the surface of the fixed wall, the connecting groove is in an "L" shape and acts on the surface of the circuit breaker body, and the limiting strips are in two groups and act on the surface of the connecting groove, and the limiting strips are in a long strip shape.

[0008] Preferably, the ejecting pieces are in two groups acting on the surface of the connecting groove. The ejecting pieces are sheet-shaped. The fixed connecting block A is in the shape of a square block acting on the surface of the connecting groove. The fixed connecting block B is in the shape of a block acting on the surface of the connecting groove. A cylindrical groove is formed on one side of the fixed connecting block A close to the fixed connecting block B.

[0009] Preferably, the fixed connecting block C is in the shape of a cylinder acting on the surface of the fixed connecting block B. The connecting ring is in the shape of an annular sheet acting on the surface of the fixed connecting block C. The connecting piece A is in the shape of an annular sheet acting on one end of the connecting ring. The connecting piece B is in the shape of an annular sheet.

[0010] Preferably, an auxiliary mechanism includes a fixed block A. The fixed block A is fixedly connected to the surface of the fixed wall. The fixed block A is in the shape of a "C"-shaped block. A threaded groove is formed on the surface of the fixed block A. The threaded groove is in the shape of a cylinder.

[0011] Preferably, an elastic fixing piece is fixedly connected to the surface of the fixed block A close to the fixed wall. The elastic fixing piece is sheet-shaped. A fixed block B is fixedly connected to one side of the circuit breaker body. The fixed block B is in the shape of an "L".

[0012] Preferably, a fixing groove is formed on the surface of the fixed block B. A screw is movably connected to the surface of the threaded groove. The screw is fixedly connected to the fixed block A through the threaded groove.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. Under the action of the circuit breaker body, the limiting strip realizes the fixing of the limiting strip. Under the action of the circuit breaker body, the ejecting piece realizes the fixing of the ejecting piece. Under the action of the circuit breaker body, the fixed connecting block A realizes the fixing of the fixed connecting block A. Under the action of the limiting strip, the fixed connecting block A realizes the fixing of the fixed connecting block A. Under the action of the fixed wall, the fixed connecting block B realizes the extrusion of the fixed connecting block A. Under the action of the fixed connecting block B, the fixed connecting block C realizes the fixing of the fixed connecting block C. Under the action of the fixed connecting block C, the connecting ring realizes the fixing of the connecting ring. Under the action of the connecting ring, the connecting piece A realizes the fixing of the connecting piece A. Under the action of the connecting piece A, the connecting piece B realizes the fixing of the connecting piece B. Under the action of the circuit breaker body, a circuit breaker that meets the requirements of the motor is installed on the output side of the frequency converter. When it is necessary to measure the insulation of the motor after connecting to the motor through the circuit breaker, the circuit breaker on the output side of the frequency converter is opened, and the insulation of the motor can be measured from the load end of the circuit breaker, reducing the maintenance workload, improving the maintenance and operation efficiency, and being able to quickly find the fault point when the motor has a grounding fault.

[0015] 2. The fixing block A is fixed by the action of the fixing wall, the general elastic fixing sheet is fixed by the action of the fixing block A, the fixing block B is fixed by the action of the circuit breaker body, the fixing block B is fixed by the action of the fixing groove, the elastic fixing sheet and the thread groove, the fixing block B is fixed by the action of the screw in the thread groove, the fixing block B is fixed by the action of the elastic fixing sheet and the screw, and the fixing block B is conveniently fixed by the action of the elastic fixing sheet and the screw, so as to facilitate the fixing of the circuit breaker body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top-down perspective schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of a cutaway perspective view of the structure of the utility model;

[0018] Figure 3 For this utility model Figure 2 A is an enlarged view of the structure;

[0019] Figure 4 This is a bottom view of the structure of the connecting ring of the utility model;

[0020] Figure 5 It is a schematic structural side view of the fixing block A of the utility model.

[0021] In the figure: 1. fixed wall; 2. circuit breaker body; 21. connection groove; 22. restriction strip; 23. pop-up piece; 24. fixed connection block A; 25. fixed connection block B; 26. fixed connection block C; 27. connecting ring; 28. connection piece A; 29. ​​connection piece B; 3. fixed block A; 31. threaded groove; 32. elastic fixing piece; 33. fixed block B; 34. fixed groove; 35. screw. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 , an embodiment provided by the utility model:

[0024] A circuit breaker for a coal feeder motor frequency converter, comprising:

[0025] A main body, including a fixed wall 1;

[0026] The connecting mechanism comprises a circuit breaker body 2, which is connected to the surface of a fixed wall 1. A connecting groove 21 is provided on the surface of the circuit breaker body 2. A limiting strip 22 is fixedly connected to the surface of the connecting groove 21. A pop-up piece 23 is fixedly connected to the surface of the connecting groove 21. A fixed connecting block A24 is fixedly connected to the surface of the connecting groove 21. A fixed connecting block B25 is movably connected to the surface of the connecting groove 21. A fixed connecting block C26 is fixedly connected to the surface of the fixed connecting block B25. A connecting ring 27 is snap-connected to the surface of the fixed connecting block C26. A connecting piece A28 is fixedly connected to one end of the connecting ring 27. A connecting piece B29 is fixedly connected to the surface of the connecting piece A28.

[0027] Furthermore, the circuit breaker body 2 is in a block shape and acts on the surface of the fixed wall 1, the connecting groove 21 is in an "L" shape and acts on the surface of the circuit breaker body 2, and the limiting bars 22 are in two groups and act on the surface of the connecting groove 21. The limiting bars 22 are in a long strip shape. The limiting bars 22 are fixed under the action of the circuit breaker body 2 to achieve the effect of fixing the limiting bars 22.

[0028] Furthermore, the pop-up pieces 23 are in two groups and act on the surface of the connecting groove 21. The pop-up pieces 23 are in a sheet shape. The fixed connecting block A24 is in a square shape and acts on the surface of the connecting groove 21. The fixed connecting block B25 is in a block shape and acts on the surface of the connecting groove 21. A cylindrical groove is provided on the side of the fixed connecting block A24 close to the fixed connecting block B25. The pop-up pieces 23 are fixed under the action of the circuit breaker body 2. The fixed connecting block A24 is fixed under the action of the circuit breaker body 2. The fixed connecting block A24 is squeezed under the action of the fixed connecting block B25 on the fixed wall 1.

[0029] Furthermore, the fixed connecting block C26 is cylindrical and acts on the surface of the fixed connecting block B25, the connecting ring 27 is annular sheet and acts on the surface of the fixed connecting block C26, the connecting piece A28 is annular sheet and acts on one end of the connecting ring 27, and the connecting piece B29 is annular sheet. By the action of the fixed connecting block B25, the fixed connecting block C26 is fixed, by the action of the connecting ring 27, the connecting ring 27 is fixed, by the action of the fixed connecting block C26, the connecting ring 27 is fixed, by the action of the connecting ring 27, the connecting piece A28 is fixed, and by the action of the connecting piece B29, the connecting piece B29 is fixed.

[0030] Furthermore, an auxiliary mechanism includes a fixing block A3. The fixing block A3 is fixedly connected to the surface of the fixed wall 1. The fixing block A3 is in a "C"-shaped block form. A threaded groove 31 is formed on the surface of the fixing block A3. The threaded groove 31 is in a cylindrical shape. Under the action of the fixed wall 1 on the fixing block A3, the fixing block A3 is fixed.

[0031] Furthermore, an elastic fixing piece 32 is fixedly connected to the surface of the fixing block A3 close to the fixed wall 1. The elastic fixing piece 32 is in a sheet form. One side of the circuit breaker body 2 is fixedly connected to a fixing block B33. The fixing block B33 is in an "L" shape. Under the action of the fixing block A3 on the general elastic fixing piece 32, the elastic fixing piece 32 is fixed. Under the action of the circuit breaker body 2 on the fixing block B33, the fixing block B33 is fixed.

[0032] Furthermore, a fixing groove 34 is formed on the surface of the fixing block B33. A screw 35 is movably connected to the surface of the threaded groove 31. The screw 35 is fixedly connected to the fixing block A3 through the threaded groove 31. Under the action of the fixing block B33 on the fixing groove 34, the elastic fixing piece 32 and the threaded groove 31, the fixing block B33 is fixed. Under the action of the screw 35 on the threaded groove 31, the fixing block B33 is fixed.

[0033] Working principle: When connecting a wire, in the first step, insert the wire into the connector A28 from above and then into the connector B29 from below to enhance the connectivity. In the second step, put the connecting ring 27 on the fixedly connected block C26, and then install the circuit breaker body 2 on the surface of the fixed wall 1. Under the action of the fixed wall 1 and the circuit breaker body 2, the fixedly connected block B25 is squeezed towards the fixedly connected block A24 to fix the connecting ring 27. However, when the circuit breaker body 2 is disassembled, the fixedly connected block B25 is separated from the fixedly connected block A24 under the action of the pop-up piece 23, achieving the effect of conveniently disassembling the connecting ring 27; when installing the circuit breaker body 2, insert the fixing block B33 into the inner side of the fixing block A3. Under the action of the fixing groove 34 and the elastic fixing piece 32, the fixing block B33 is fixed. Then rotate the screw 35 through the threaded groove 31 to squeeze the fixing block B33, achieving the effect of strengthening the fixation.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A circuit breaker for a coal feeder motor inverter, characterized in that: Including: A main body, including a fixed wall (1); A connecting mechanism, including a circuit breaker main body (2), the circuit breaker main body (2) is connected to the surface of the fixed wall (1), a connecting groove (21) is provided on the surface of the circuit breaker main body (2), a limiting strip (22) is fixedly connected to the surface of the connecting groove (21), a pop-up piece (23) is fixedly connected to the surface of the connecting groove (21), a fixed connecting block A (24) is fixedly connected to the surface of the connecting groove (21), a fixed connecting block B (25) is movably connected to the surface of the connecting groove (21), a fixed connecting block C (26) is fixedly connected to the surface of the fixed connecting block B (25), a connecting ring (27) is snap-connected to the surface of the fixed connecting block C (26), one end of the connecting ring (27) is fixedly connected to a connecting piece A (28), and a connecting piece B (29) is fixedly connected to the surface of the connecting piece A (28).

2. A circuit breaker for a coal feeder motor inverter according to claim 1, characterized in that: The circuit breaker main body (2) acts on the surface of the fixed wall (1) in a块状 shape, the connecting groove (21) acts on the surface of the circuit breaker main body (2) in an "L" shape, the limiting strips (22) act on the surface of the connecting groove (21) in two groups, and the limiting strips (22) are in a长条状 shape.

3. A circuit breaker for a coal feeder motor frequency converter according to claim 1, characterized in that: The pop-up pieces (23) act on the surface of the connecting groove (21) in two groups, the pop-up pieces (23) are in a片状 shape, the fixed connecting block A (24) acts on the surface of the connecting groove (21) in a方块状 shape, the fixed connecting block B (25) acts on the surface of the connecting groove (21) in a块状 shape, and a cylindrical groove is provided on the side of the fixed connecting block A (24) close to the fixed connecting block B (25).

4. A circuit breaker for a coal feeder motor inverter according to claim 1, characterized in that: The fixed connecting block C (26) acts on the surface of the fixed connecting block B (25) in a圆柱状 shape, the connecting ring (27) acts on the surface of the fixed connecting block C (26) in an annular片状 shape, the connecting piece A (28) acts on one end of the connecting ring (27) in an annular片状 shape, and the connecting piece B (29) is in an annular片状 shape.

5. A circuit breaker for a coal feeder motor frequency converter according to claim 1, characterized in that: An auxiliary mechanism, the mechanism includes a fixed block A (3), the fixed block A (3) is fixedly connected to the surface of the fixed wall (1), the fixed block A (3) is in a "匚" shaped块状 shape, a threaded groove (31) is provided on the surface of the fixed block A (3), and the threaded groove (31) is in a圆柱状 shape.

6. A circuit breaker for a coal feeder motor inverter according to claim 5, characterized in that: An elastic fixing piece (32) is fixedly connected to the surface of the fixed block A (3) close to the fixed wall (1), the elastic fixing piece (32) is in a片状 shape, a fixed block B (33) is fixedly connected to one side of the circuit breaker main body (2), and the fixed block B (33) is in an "L" shape.

7. A circuit breaker for a coal feeder motor frequency converter according to claim 6, characterized in that: A fixing groove (34) is provided on the surface of the fixed block B (33), a screw (35) is movably connected to the surface of the threaded groove (31), and the screw (35) is fixedly connected to the fixed block A (3) through the threaded groove (31).

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