阅读说明：本技术 一种变频器 (Frequency converter ) 是由 陈茹 于 2021-08-08 设计创作，主要内容包括：本发明公开了一种变频器,包括机柜,所述机柜的正面固定安装有前盖板,所述前盖板由端子盖板与上盖板组成,所述上盖板的正面固定安装有控制器,所述隔磁板内壁两侧之间的靠下位置固定安装有铝型材隔板,所述铝型材隔板的底部呈等距开设有若干散热槽。该一种变频器,即可实现竖向电磁屏蔽结构一、横向电磁屏蔽结构与竖向电磁屏蔽结构二即分别单独安装,安装完成后,也可实现竖向电磁屏蔽结构一、横向电磁屏蔽结构与竖向电磁屏蔽结构二之间呈串联通电状态,当某个损坏时,无需全部拆卸更换,只需更换损坏的部分即可,降低了维修的成本,有利于避免资源上的浪费。(The invention discloses a frequency converter, which comprises a cabinet, wherein a front cover plate is fixedly arranged on the front surface of the cabinet, the front cover plate consists of a terminal cover plate and an upper cover plate, a controller is fixedly arranged on the front surface of the upper cover plate, aluminum profile partition plates are fixedly arranged at positions, close to the lower positions, between two sides of the inner wall of a magnetism isolating plate, and a plurality of heat dissipation grooves are formed in the bottoms of the aluminum profile partition plates at equal intervals. This kind of converter can realize that vertical electromagnetic shield structure one, horizontal electromagnetic shield structure and vertical electromagnetic shield structure two install alone respectively promptly, and the back is accomplished in the installation, also can realize being the series connection circular telegram state between vertical electromagnetic shield structure one, horizontal electromagnetic shield structure and the vertical electromagnetic shield structure two, when certain damage, need not whole dismantlement change, only need change the damage the part can, reduced the cost of maintenance, be favorable to avoiding the waste on the resource.)

1. A frequency converter comprises a cabinet (1), and is characterized in that: the front fixed mounting of rack (1) has front shroud (5), front shroud (5) comprises terminal apron (2) and upper cover plate (3), the front fixed mounting of upper cover plate (3) has controller (4), the position fixed mounting that leans on between magnetic shield (6) inner wall both sides has aluminium alloy baffle (9), a plurality of radiating grooves (8) have been seted up to the bottom of aluminium alloy baffle (9) is the equidistance, the inside of rack (1) and the below fixed mounting that is located aluminium alloy baffle (9) have main circuit binding post (7), the inner wall fixed mounting of rack (1) has magnetic shield (6), the back of rack (1) inner wall and the top fixed mounting that is located aluminium alloy baffle (9) have circuit board mounting panel (14), the front fixed mounting of circuit board mounting panel (14) has control circuit (13), the front of circuit board mounting panel (14) just is located the below fixed mounting of control circuit (13) and has control circuit binding post (11), magnetic sensor (10) are installed to one side interlude of rack (1), one side fixed mounting of magnetic shield board (6) inner wall has vertical electromagnetic shielding structure (12), the opposite side fixed mounting of magnetic shield board (6) inner wall has vertical electromagnetic shielding structure two (18), the top fixed mounting of magnetic shield board (6) inner wall has horizontal electromagnetic shielding structure (16), the position fixed mounting has electromagnetic shielding structure connection structure one (15) on one side of the rack (1) inner wall back, and carries out the electrically conductive connection through electromagnetic shielding structure connection structure one (15) between horizontal electromagnetic shielding structure (16) and vertical electromagnetic shielding structure one (12), the position fixed mounting on the opposite side of the rack (1) inner wall back has electromagnetic shielding structure connection structure two (17), and the transverse electromagnetic shielding structure (16) is in conductive connection with the vertical electromagnetic shielding structure (18) through the electromagnetic shielding structure connecting structure II (17), the vertical electromagnetic shielding structure I (12), the transverse electromagnetic shielding structure (16) and the vertical electromagnetic shielding structure II (18) are consistent in structure, the vertical electromagnetic shielding structure I (12) comprises a coil mounting plate (22), an electromagnetic coil (19) is bonded and mounted on one side of the coil mounting plate (22), two dovetail grooves (26) are fixedly mounted on the other side of the coil mounting plate (22), sliding seats (27) are fixedly mounted on the two sides of the inner wall of the magnetism isolating plate (6) and the top of the inner wall, dovetail grooves (26) are formed in one side of each sliding seat (27), and each sliding seat (27) is connected with the dovetail grooves (23) matched with the sliding seat through the dovetail grooves (26) in a sliding manner, and the opposite side fixed connection of one side of forked tail slider (23) and coil mounting panel (22), the opposite side of coil mounting panel (22) just is located fixed mounting between two forked tail sliders (23) has two coil plate installation pieces (24), the both sides of magnetic shield (6) inner wall and the top of inner wall just are located equal fixed mounting between two sliding seats (27) have coil plate dog (25), set up threaded hole (21) all run through at the top of coil plate installation piece (24) and coil plate dog (25), through screw hole (21) fixed connection fixing bolt (20) between coil plate installation piece (24) and coil plate dog (25).

2. A frequency converter according to claim 1, characterized in that: the structure size of the first electromagnetic shielding structure connecting structure (15) is consistent with that of the second electromagnetic shielding structure connecting structure (17), the first electromagnetic shielding structure connecting structure (15) comprises a conductive connecting seat (31), a first cable placing cavity (32) is formed in the top of the conductive connecting seat (31), a first conductive wire (33) is arranged inside the first cable placing cavity (32), a first compression conductive structure (30) is fixedly installed on one side of the conductive connecting seat (31), a first side coil placing groove (29) is fixedly connected to the bottom of the first compression conductive structure (30), a first side coil placing plate (28) is formed in the front of the first side coil placing groove (29), a first resistor placing seat (35) is fixedly connected to the other side of the conductive connecting seat (31), and a resistor cavity (36) is formed in the front of the resistor placing seat (35), the novel resistor is characterized in that a resistor body (37) is arranged inside the resistor cavity (36), one end of the resistor body (37) is fixedly connected with one end of a first conductive wire (33), one side of a resistor placing seat (35) is fixedly connected with a middle connecting seat (38), a cable placing cavity II (59) is formed in the front face of the middle connecting seat (38), a second conductive wire (42) is arranged inside the cable placing cavity II (59), one end of the second conductive wire (42) is fixedly connected with the other end of the resistor body (37), a second pressing conductive structure (39) is fixedly connected with one side of the middle connecting seat (38), a second side coil placing plate (40) is fixedly connected with one side of the second pressing conductive structure (39), and a second side coil placing groove (41) is formed in the front face of the second side coil placing plate (40).

3. A frequency converter according to claim 2, characterized in that: the front surfaces of the side coil placing grooves I (29), the conductive connecting seats (31), the middle connecting seats (38) and the side coil placing plates II (40) are fixedly provided with U-shaped fixing seats (34) through bolts, the diameters of the U-shaped fixing seats (34) are consistent with the width of the side coil placing plates I (28), and the width and the depth of the side coil placing plates I (28), the cable placing cavities I (32), the cable placing cavities II (59) and the side coil placing grooves II (41) are consistent.

4. A frequency converter according to claim 2, characterized in that: the utility model discloses a lead cable structure, including compressing tightly conductive structure one (30) and compressing tightly conductive structure two (39) the structure size all unanimous, compress tightly conductive structure one (30) including compressing tightly base (43) and compressing tightly roof (54), the front that compresses tightly base (43) has seted up conductor circular telegram chamber (46), the inside fixed mounting that conductor circular telegram chamber (46) has bottom current conducting plate (44), bottom arc wall (45) have been seted up in the front of bottom current conducting plate (44), the middle part fixed mounting who compresses tightly the roof (54) the back has lug (55), the back fixed mounting of lug (55) has top current conducting plate (57), top arc wall (56) have been seted up at the middle part at the top current conducting plate (57) back, the equal fixed mounting in both sides at the top current conducting plate (57) back has conducting rod (58).

5. A frequency converter according to claim 4, characterized in that: two conductive grooves (65) have all been seted up to the positive both sides of bottom conducting plate (44), conductive groove (65) are unanimous with the quantity of conducting rod (58), and conductive groove (65) and conducting rod (58) looks adaptation.

6. A frequency converter according to claim 4, characterized in that: blocking grooves (48) are respectively arranged at the two sides of the front surface of the pressing base (43), movable holes (47) are respectively arranged at the two sides of the front surface of the pressing base (43) and below the blocking grooves (48), the movable hole (47) is communicated with the inside of the blocking groove (48), the two sides of the front surface of the pressing base (43) are both provided with a rotating cavity (61), a rotating shaft (66) is rotatably arranged in the rotating cavity (61), the outer wall of the rotating shaft (66) is sleeved with a clamping seat (63), vertical rods (52) are fixedly arranged on both sides of the back surface of the compression top plate (54), the outer wall of the vertical rod (52) is sleeved with a baffle ring (49), the outer wall of the baffle ring (49) is slidably provided with a movable sleeve (50), and a spring (51) is sleeved and mounted on the outer wall of the vertical rod (52) and between the opposite surfaces of the movable sleeve (50) and the pressing top plate (54).

7. A frequency converter according to claim 6, characterized in that: the inner surface fixed mounting of joint seat (63) protrusion end has positioning convex block (64), compress tightly the positive both sides of roof (54) and all be provided with the chimb, constant head tank (53) with positioning convex block (64) looks adaptation are seted up in the front of chimb.

8. A frequency converter according to claim 7, characterized in that: one side fixed mounting of rotatory chamber (61) inner wall has fixed magnet piece (60), one side fixed mounting that constant head tank (53) are close to conductor circular telegram chamber (46) has movable magnet piece (62), and is magnetic adsorption between the opposite face of fixed magnet piece (60) and movable magnet piece (62).

Technical Field

The invention relates to the field of frequency converters, in particular to a frequency converter.

Background

The frequency converter is an electric control device which applies a frequency conversion technology and a microelectronic technology and controls an alternating current motor by changing the frequency mode of a working power supply of the motor.

The frequency converter mainly comprises a rectifying unit (alternating current to direct current), a filtering unit, an inverting unit (direct current to alternating current), a braking unit, a driving unit, a detection unit micro-processing unit and the like. The frequency converter adjusts the voltage and frequency of an output power supply by switching on and off an internal IGBT, provides the required power supply voltage according to the actual requirement of the motor, and further achieves the purposes of energy saving and speed regulation. With the continuous improvement of the industrial automation degree, the frequency converter is also widely applied.

The environment of converter installation differs, it is probably installed under the high temperature environment, under the low temperature environment, under the humid environment, also can install under the environment of high electromagnetic wave, this moment if it does not possess excellent anti-electromagnetic interference effect of converter, the normal operation of converter easily receives the influence in disorder, solenoid's life receives multiple environmental impact, a plurality of solenoid that have now adopt the mode of establishing ties to be connected together, it is better that the circuit of establishing ties together needs to unify, and current line ball mode easily leads to the end of a thread to damage, contact failure.

Disclosure of Invention

The present invention is directed to a frequency converter to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme:

a frequency converter comprises a cabinet, wherein a front cover plate is fixedly mounted on the front side of the cabinet and consists of a terminal cover plate and an upper cover plate, a controller is fixedly mounted on the front side of the upper cover plate, aluminum profile partition plates are fixedly mounted on the positions, which are close to the two sides, of the inner wall of each magnetic shield plate, a plurality of radiating grooves are formed in the bottoms of the aluminum profile partition plates in an equidistant mode, a main circuit wiring terminal is fixedly mounted in the cabinet and below the aluminum profile partition plates, the magnetic shield plates are fixedly mounted on the inner wall of the cabinet, a circuit board mounting plate is fixedly mounted on the back side of the inner wall of the cabinet and above the aluminum profile partition plates, a control circuit is fixedly mounted on the front side of the circuit board mounting plate, a control circuit wiring terminal is fixedly mounted on the front side of the circuit board mounting plate and below the control circuit, and a magnetic sensor is alternately mounted on one side of the cabinet, one side of the inner wall of the magnetic shield plate is fixedly provided with a first vertical electromagnetic shielding structure, the other side of the inner wall of the magnetic shield plate is fixedly provided with a second vertical electromagnetic shielding structure, the top of the inner wall of the magnetic shield plate is fixedly provided with a first horizontal electromagnetic shielding structure, the upper position of one side of the back surface of the inner wall of the cabinet is fixedly provided with a first electromagnetic shielding structure connecting structure, the first horizontal electromagnetic shielding structure is in conductive connection with the first vertical electromagnetic shielding structure through the first electromagnetic shielding structure connecting structure, the upper position of the other side of the back surface of the inner wall of the cabinet is fixedly provided with a second electromagnetic shielding structure connecting structure, the second horizontal electromagnetic shielding structure is in conductive connection with the second vertical electromagnetic shielding structure through the second electromagnetic shielding structure connecting structure, and the first vertical electromagnetic shielding structure, the second horizontal electromagnetic shielding structure and the second vertical electromagnetic shielding structure are consistent in structure, the vertical electromagnetic shielding structure comprises a coil mounting plate, one side of the coil mounting plate is provided with an electromagnetic coil in a bonding way, two dovetail slide blocks are fixedly arranged on the other side of the coil mounting plate, sliding seats are fixedly arranged on the two sides of the inner wall of the magnetism isolating plate and the top of the inner wall, one side of the sliding seat is provided with a dovetail groove, the sliding seat is connected with a dovetail slide block matched with the sliding seat in a sliding way through the dovetail groove, one side of the dovetail slide block is fixedly connected with the other side of the coil mounting plate, two coil plate mounting blocks are fixedly mounted on the other side of the coil mounting plate and positioned between the two dovetail slide blocks, coil plate stoppers are fixedly arranged on both sides of the inner wall of the magnetism isolating plate and the top of the inner wall and between the two sliding seats, the coil plate mounting block and the top of the coil plate stop block are both provided with threaded holes in a penetrating mode, and the coil plate mounting block and the coil plate stop block are fixedly connected with fixing bolts through the threaded holes.

As a further scheme of the invention: the first electromagnetic shielding structure connecting structure and the second electromagnetic shielding structure connecting structure are identical in structural size, the first electromagnetic shielding structure connecting structure comprises a conductive connecting seat, a first cable placing cavity is formed in the top of the conductive connecting seat, a first conductive wire is arranged in the first cable placing cavity, a first compression conductive structure is fixedly arranged on one side of the conductive connecting seat, a first side coil placing groove is fixedly connected to the bottom of the first compression conductive structure, a first side coil placing plate is arranged on the front surface of the first side coil placing groove, a resistor placing seat is fixedly connected to the other side of the conductive connecting seat, a resistor cavity is formed in the front surface of the resistor placing seat, a resistor body is arranged in the resistor cavity, one end of the resistor body is fixedly connected with one end of the first conductive wire, and a middle connecting seat is fixedly connected to one side of the resistor placing seat, the front of the middle connecting seat is provided with a cable placing cavity II, a conductive wire II is arranged inside the cable placing cavity II, one end of the conductive wire II is fixedly connected with the other end of the resistor body, one side of the middle connecting seat is fixedly connected with a compression conductive structure II, one side of the compression conductive structure II is fixedly connected with a side coil placing plate II, and the front of the side coil placing plate II is provided with a side coil placing groove II.

As a still further scheme of the invention: the front surfaces of the first side coil placing groove, the conductive connecting seat, the middle connecting seat and the second side coil placing plate are fixedly provided with U-shaped fixing seats through bolts, the diameter of each U-shaped fixing seat is consistent with the width of the first side coil placing plate, and the width and the depth of the first side coil placing plate, the first cable placing cavity, the second cable placing cavity and the second side coil placing groove are consistent.

As a still further scheme of the invention: the utility model discloses a cable conductor structure, including compressing tightly the base and compressing tightly the roof, compress tightly conducting structure one and compress tightly conducting structure two's structure size all unanimous, compress tightly conducting structure one including compressing tightly the base with compress tightly the roof, the conductor circular telegram chamber has been seted up in the front that compresses tightly the base, the inside fixed mounting in conductor circular telegram chamber has the bottom current conducting plate, the bottom arc wall has been seted up in the front of bottom current conducting plate, the middle part fixed mounting who compresses tightly the roof back has the lug, the back fixed mounting of lug has the top current conducting plate, the top arc wall has been seted up at the middle part at the top current conducting plate back, the equal fixed mounting in both sides at the top current conducting plate back has the conducting rod.

As a still further scheme of the invention: two conductive grooves are formed in the two sides of the front face of the bottom conductive plate, the number of the conductive grooves is consistent with that of the conductive rods, and the conductive grooves are matched with the conductive rods.

As a still further scheme of the invention: compress tightly the positive both sides of base and all seted up the retaining groove, compress tightly the positive both sides of base and be located the below in retaining groove and all seted up the movable hole, the movable hole is linked together with the inside that blocks the groove, compress tightly the positive both sides of base and all seted up rotatory chamber, the inside rotation in rotatory chamber installs the rotation axis, the outer wall of rotation axis is cup jointed and is installed the joint seat, the equal fixed mounting in both sides that compresses tightly the roof back has the montant, the outer wall of montant cup joints and installs the fender ring, the outer wall slidable mounting who keeps off the ring has the movable sleeve, the outer wall of montant just is located the movable sleeve and compresses tightly and cup joints between the opposite face of roof and installs the spring.

As a still further scheme of the invention: the inner surface fixed mounting of joint seat protrusion end has the location lug, it all is provided with the chimb to compress tightly the positive both sides of roof, the constant head tank with location lug looks adaptation is seted up in the front of chimb.

As a still further scheme of the invention: one side fixed mounting of rotatory intracavity wall has the fixed magnet piece, one side fixed mounting that the constant head tank is close to the conductor circular telegram chamber has the movable magnet piece, and is the magnetic adsorption between the opposite face of fixed magnet piece and movable magnet piece.

Compared with the prior art, the invention has the beneficial effects that:

1. when a first vertical electromagnetic shielding structure, a second horizontal electromagnetic shielding structure and a second vertical electromagnetic shielding structure are installed, a dovetail sliding block enters the dovetail groove to slide, a coil plate block can block a coil plate installing block, and the coil plate installing block and the coil plate block are fixed together through a fixing bolt, at the time, the electromagnetic shielding structures arranged horizontally and vertically are arranged by adopting a split connection method, if the electromagnetic shielding structures are damaged singly, only a certain damaged part needs to be replaced, the cost of subsequent maintenance is reduced, meanwhile, the problems that when the coil mounting plates are placed vertically or horizontally, the downward gravity is increased, the adhesion is insufficient, the gripping force of the inner wall is poor, the auxiliary installation of an external auxiliary tool is needed are solved, the horizontal and vertical electromagnetic coils are arranged, and the direction of an electromagnetic wave is judged through a magnetic sensor, the electromagnetic waves can be eliminated, so that the frequency converter can stably and stably operate in a high-electromagnetic-wave environment, and the condition of disorder judgment can not occur.

2. According to the invention, the electromagnetic coil is placed in a suspended state after being installed, so that the electromagnetic coil is prevented from being directly installed on the wall surface of the cabinet, the local range of the cabinet is prevented from being melted and damaged due to high-temperature overheating, and the cabinet is prevented from being additionally provided with the magnetic isolation plate, so that a further blocking effect is achieved.

3. According to the invention, the energization between the second vertical electromagnetic shielding structure and the second transverse electromagnetic shielding structure is realized, and similarly, the energization between the first vertical electromagnetic shielding structure and the second transverse electromagnetic shielding structure is also realized, so that the first vertical electromagnetic shielding structure, the second transverse electromagnetic shielding structure and the second vertical electromagnetic shielding structure can be independently installed respectively, and after the installation is finished, the first vertical electromagnetic shielding structure, the first transverse electromagnetic shielding structure and the second vertical electromagnetic shielding structure can be in a series energization state.

4. According to the invention, the opposite surfaces of the bottom current-conducting plate and the top current-conducting plate are respectively provided with the bottom arc-shaped groove and the top arc-shaped groove, the radian of the bottom arc-shaped groove is consistent with that of the end of thread, so that the end of thread is positioned in the bottom current-conducting plate, the end of thread is prevented from moving between the bottom current-conducting plate and the top current-conducting plate, the bottom current-conducting plate and the top current-conducting plate are fully contacted, the condition that the end of thread falls off and is not in good contact is reduced, meanwhile, the conducting rod enters the conducting groove to be clamped, so that the conducting rod is fully contacted with the bottom current-conducting plate, and the traditional thread pressing mode is changed, so that the bottom current-conducting plate is favorably completely attached to the end of thread and cannot move, the end of thread is not damaged, the conduction is stable, and the service life is long.

Drawings

FIG. 1 is a schematic structural diagram of a frequency converter;

FIG. 2 is a schematic diagram of an internal structure of a cabinet in a frequency converter;

FIG. 3 is a schematic structural diagram of a first vertical electromagnetic shielding structure in a frequency converter;

FIG. 4 is a schematic structural diagram of a first electromagnetic shielding structure connection structure in a frequency converter;

FIG. 5 is a top view of a first connection structure of an electromagnetic shielding structure in a frequency converter;

FIG. 6 is a schematic view of a vertical separation structure of a first connection structure of an electromagnetic shielding structure in a frequency converter;

FIG. 7 is a structural diagram of a vertical installation state of a first electromagnetic shielding structure connecting structure in a frequency converter;

fig. 8 is a top view of a pressure foot in a frequency converter.

In the figure: the device comprises a cabinet 1, a terminal cover plate 2, an upper cover plate 3, a controller 4, a front cover plate 5, a magnetic isolation plate 6, a main circuit wiring terminal 7, a heat dissipation groove 8, an aluminum section partition plate 9, a magnetic sensor 10, a control circuit wiring terminal 11, a first vertical electromagnetic shielding structure 12, a control circuit 13, a circuit board mounting plate 14, a first electromagnetic shielding structure connecting structure 15, a transverse electromagnetic shielding structure 16, a second electromagnetic shielding structure connecting structure 17, a second vertical electromagnetic shielding structure 18, an electromagnetic coil 19, a fixing bolt 20, a threaded hole 21, a coil mounting plate 22, a dovetail slide block 23, a coil plate mounting block 24, a coil plate stopper 25, a dovetail groove 26, a sliding seat 27, a first side coil placing plate 28, a first side coil placing groove 29, a first compression conductive structure 30, a conductive connecting seat 31, a first cable placing cavity 32, a first conductive wire 33, a U-shaped fixing seat 34, a resistor placing seat 35, The resistance cavity 36, the resistor body 37, the middle connecting seat 38, the pressing conductive structure II 39, the side coil placing plate II 40, the side coil placing groove II 41, the conductive wire II 42, the pressing base 43, the bottom conductive plate 44, the bottom arc-shaped groove 45, the conductor electrifying cavity 46, the movable hole 47, the blocking groove 48, the baffle ring 49, the movable sleeve 50, the spring 51, the vertical rod 52, the positioning groove 53, the pressing top plate 54, the bump 55, the top arc-shaped groove 56, the top conductive plate 57, the conductive rod 58, the cable placing cavity II 59, the fixed magnet block 60, the rotating cavity 61, the movable magnet block 62, the clamping seat 63, the positioning bump 64, the conductive groove 65 and the rotating shaft 66.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 8, the present invention provides a frequency converter, including a cabinet 1, a front cover plate 5 is fixedly installed on the front surface of the cabinet 1, the front cover plate 5 is composed of a terminal cover plate 2 and an upper cover plate 3, a controller 4 is fixedly installed on the front surface of the upper cover plate 3, an aluminum profile partition plate 9 is fixedly installed at a position near the lower position between two sides of the inner wall of the magnetic barrier plate 6, a plurality of heat dissipation grooves 8 are equidistantly formed at the bottom of the aluminum profile partition plate 9, a main circuit connection terminal 7 is fixedly installed inside the cabinet 1 and below the aluminum profile partition plate 9, the magnetic barrier plate 6 is fixedly installed on the inner wall of the cabinet 1, a circuit board mounting plate 14 is fixedly installed on the back surface of the inner wall of the cabinet 1 and above the aluminum profile partition plate 9, a control circuit 13 is fixedly installed on the front surface of the circuit board mounting plate 14, a control circuit connection terminal 11 is fixedly installed on the front surface of the circuit board mounting plate 14 and below the control circuit 13, one side of a cabinet 1 is provided with a magnetic sensor 10 in an inserting way, one side of the inner wall of a magnetic isolation plate 6 is fixedly provided with a first vertical electromagnetic shielding structure 12, the other side of the inner wall of the magnetic isolation plate 6 is fixedly provided with a second vertical electromagnetic shielding structure 18, the top of the inner wall of the magnetic isolation plate 6 is fixedly provided with a transverse electromagnetic shielding structure 16, an upper position of one side of the back surface of the inner wall of the cabinet 1 is fixedly provided with a first electromagnetic shielding structure connecting structure 15, the transverse electromagnetic shielding structure 16 is in conductive connection with the first vertical electromagnetic shielding structure 12 through the first electromagnetic shielding structure connecting structure 15, an upper position of the other side of the back surface of the inner wall of the cabinet 1 is fixedly provided with a second electromagnetic shielding structure connecting structure 17, the transverse electromagnetic shielding structure 16 is in conductive connection with the second vertical electromagnetic shielding structure 18 through the second electromagnetic shielding structure connecting structure 17, and the first vertical electromagnetic shielding structure 12, the transverse electromagnetic shielding structure 16 and the second vertical electromagnetic shielding structure 18 are consistent in structure, the first vertical electromagnetic shielding structure 12 comprises a coil mounting plate 22, an electromagnetic coil 19 is adhered to one side of the coil mounting plate 22, two dovetail sliders 23 are fixedly mounted on the other side of the coil mounting plate 22, sliding seats 27 are fixedly mounted on the two sides of the inner wall of the magnetic shield 6 and the top of the inner wall, a dovetail groove 26 is formed in one side of each sliding seat 27, the sliding seats 27 are slidably connected with the dovetail sliders 23 matched with the sliding seats through the dovetail grooves 26, one sides of the dovetail sliders 23 are fixedly connected with the other side of the coil mounting plate 22, two coil plate mounting blocks 24 are fixedly mounted on the other side of the coil mounting plate 22 and between the two dovetail sliders 23, coil plate stoppers 25 are fixedly mounted on the two sides of the inner wall of the magnetic shield 6 and the top of the inner wall and between the two sliding seats 27, and threaded holes 21 are formed in the coil plate mounting blocks 24 and the top of the coil plate stoppers 25, the coil plate mounting block 24 and the coil plate stopper 25 are fixedly connected with a fixing bolt 20 through a threaded hole 21.

The first electromagnetic shielding structure connecting structure 15 and the second electromagnetic shielding structure connecting structure 17 are identical in structure size, the first electromagnetic shielding structure connecting structure 15 comprises a conductive connecting seat 31, a cable placing cavity I32 is formed in the top of the conductive connecting seat 31, a conductive wire I33 is arranged inside the cable placing cavity I32, a first compression conductive structure 30 is fixedly installed on one side of the conductive connecting seat 31, a side coil placing groove I29 is fixedly connected to the bottom of the first compression conductive structure 30, a side coil placing plate I28 is arranged on the front surface of the side coil placing groove I29, a resistor placing seat 35 is fixedly connected to the other side of the conductive connecting seat 31, a resistor cavity 36 is formed in the front surface of the resistor placing seat 35, a resistor 37 is arranged inside the resistor cavity 36, one end of the resistor 37 is fixedly connected with one end of the conductive wire I33, and a middle connecting seat 38 is fixedly connected to one side of the resistor placing seat 35, the front face of the middle connecting seat 38 is provided with a cable placing cavity II 59, a conductive wire II 42 is arranged inside the cable placing cavity II 59, one end of the conductive wire II 42 is fixedly connected with the other end of the resistor body 37, one side of the middle connecting seat 38 is fixedly connected with a compression conductive structure II 39, one side of the compression conductive structure II 39 is fixedly connected with a side coil placing plate II 40, and the front face of the side coil placing plate II 40 is provided with a side coil placing groove II 41.

The front surfaces of the first side coil placing groove 29, the conductive connecting seat 31, the middle connecting seat 38 and the second side coil placing plate 40 are fixedly provided with a U-shaped fixing seat 34 through bolts, the diameter of the U-shaped fixing seat 34 is consistent with the width of the first side coil placing plate 28, and the width and the depth of the first side coil placing plate 28, the first cable placing cavity 32, the second cable placing cavity 59 and the second side coil placing groove 41 are consistent.

Compress tightly conducting structure 30 and the equal unanimity of structure size that compresses tightly conducting structure two 39, compress tightly conducting structure 30 including compressing tightly base 43 and compressing tightly roof 54, the conductor circular telegram chamber 46 has been seted up in the front that compresses tightly base 43, the inside fixed mounting in conductor circular telegram chamber 46 has bottom current conducting plate 44, bottom arc wall 45 has been seted up in bottom current conducting plate 44's front, the middle part fixed mounting who compresses tightly the roof 54 back has lug 55, the back fixed mounting of lug 55 has top current conducting plate 57, top arc wall 56 has been seted up at the middle part at the top current conducting plate 57 back, the equal fixed mounting in both sides at the top current conducting plate 57 back has conducting rod 58.

Two conductive grooves 65 are formed in the two sides of the front surface of the bottom conductive plate 44, the number of the conductive grooves 65 is the same as that of the conductive rods 58, and the conductive grooves 65 are matched with the conductive rods 58.

Compress tightly the positive both sides of base 43 and all seted up and block groove 48, it has all seted up movable hole 47 to compress tightly the below that the positive both sides of base 43 just are located and block groove 48, movable hole 47 is linked together with the inside that blocks groove 48, it has all seted up rotatory chamber 61 to compress tightly the positive both sides of base 43, the inside rotation of rotatory chamber 61 installs rotation axis 66, the outer wall of rotation axis 66 cup joints installs joint seat 63, the equal fixed mounting in both sides that compresses tightly the roof 54 back has montant 52, the outer wall of montant 52 cup joints installs fender ring 49, the outer wall slidable mounting that keeps off ring 49 has movable sleeve 50, the outer wall of montant 52 just is located movable sleeve 50 and compresses tightly and cup joints between the opposite face of roof 54 and installs spring 51.

The inner surface of the protruding end of the clamping seat 63 is fixedly provided with a positioning bump 64, the two sides of the front surface of the pressing top plate 54 are both provided with convex edges, and the front surface of each convex edge is provided with a positioning groove 53 matched with the positioning bump 64.

One side of the inner wall of the rotating cavity 61 is fixedly provided with a fixed magnet block 60, one side of the positioning groove 53 close to the conductor electrifying cavity 46 is fixedly provided with a movable magnet block 62, and the opposite surfaces of the fixed magnet block 60 and the movable magnet block 62 are magnetically adsorbed.

The working principle of the invention is as follows:

when the electromagnetic shielding structure is used, when the first vertical electromagnetic shielding structure 12, the second horizontal electromagnetic shielding structure 16 and the second vertical electromagnetic shielding structure 18 are installed, the dovetail slide block 23 enters the dovetail groove 26 to slide, the coil plate block 25 can block the coil plate installing block 24, and the coil plate installing block 24 and the coil plate block 25 are fixed together through the fixing bolt 20, at the moment, the electromagnetic shielding structures arranged horizontally and vertically are arranged by adopting a split connection method, if the electromagnetic shielding structures are singly damaged, only a single damaged part needs to be replaced, the cost of subsequent maintenance is reduced, meanwhile, the problems that the downward gravity is increased when the coil installing plates 22 are vertically or horizontally placed, the attachment is insufficient, the gripping force of the inner wall is poor, the auxiliary installation needs an external auxiliary tool are solved, and the electromagnetic coils 19 arranged horizontally and vertically are avoided, the direction of the electromagnetic waves is judged by the magnetic sensor 10, and the electromagnetic waves can be eliminated, so that the frequency converter can stably and stably run in a high-electromagnetic-wave environment, and the condition of judgment disorder is avoided;

after the electromagnetic coil 19 is installed, the electromagnetic coil is placed in a suspended state, so that the electromagnetic coil is prevented from being directly installed on the wall surface of the cabinet 1, the local range of the cabinet 1 is prevented from being melted and damaged due to high-temperature overheating, and a further blocking effect is achieved by preventing the magnetic isolation plate 6 from being additionally installed on the cabinet 1;

when the second vertical electromagnetic shielding structure 18 and the transverse electromagnetic shielding structure 16 are connected, the head-of-wire protruding end on the second vertical electromagnetic shielding structure 18 is placed inside the first side coil placing plate 28 and extends into the inner cavity of the conductor conducting cavity 46, then the vertical rod 52 enters the inside of the movable hole 47 and presses the pressing top plate 54 towards the direction of the pressing base 43, at this time, the movable sleeve 50 compresses the spring 51, the vertical rod 52 and the pressing top plate 54 continuously move towards the direction of the pressing base 43, when the pressing top plate 54 is pressed, the clamping seat 63 and the pressing top plate 54 are vertically placed, then the pressing top plate 54 is released under the elastic action of the spring 51, the pressing top plate 54 moves towards the direction away from the pressing base 43, the moving distance is extremely short, at this time, the pressing top plate 54 enters the inside of the positioning groove 53 to be clamped, and the installation of the pressing top plate 54 is completed, the wire end of the second vertical electromagnetic shielding structure 18 is fixed between the bottom conductive plate 44 and the top conductive plate 57, the conductive rod 58 is additionally arranged between the bottom conductive plate 44 and the top conductive plate 57, the wire end of the second vertical electromagnetic shielding structure 18 is electrified with the first conductive wire 33, the clamping seat 63 is taken down from the pressing top plate 54, and the pressing top plate 54 can be detached, and similarly, the method is also adopted to fix the wire end of the transverse electromagnetic shielding structure 16, the wire end of the transverse electromagnetic shielding structure 16 is electrified with the second conductive wire 42, the first conductive wire 33, the resistor body 37 and the second conductive wire 42 are in series flow, so that the electrification between the second vertical electromagnetic shielding structure 18 and the transverse electromagnetic shielding structure 16 is realized, and similarly, the first vertical electromagnetic shielding structure 12 is also connected with the transverse electromagnetic shielding structure 16, so that the electrification between the first vertical electromagnetic shielding structure 12 and the transverse electromagnetic shielding structure 16 is realized, the first vertical electromagnetic shielding structure 12, the transverse electromagnetic shielding structure 16 and the second vertical electromagnetic shielding structure 18 can be independently installed, and after the installation is finished, the first vertical electromagnetic shielding structure 12, the transverse electromagnetic shielding structure 16 and the second vertical electromagnetic shielding structure 18 can be in a series connection power-on state, when a certain part is damaged, all parts do not need to be disassembled and replaced, only the damaged part needs to be replaced, the maintenance cost is reduced, and the waste on resources is avoided;

bottom current conducting plate 44 is provided with bottom arc groove 45 and top arc groove 56 respectively with the opposite face of top current conducting plate 57, its radian is unanimous with the radian of end of a thread, it is inside to make the end of a thread be located, avoid the end of a thread to remove between bottom current conducting plate 44 and top current conducting plate 57, also make it fully with bottom current conducting plate 44 and top current conducting plate 57 contact, it drops and the bad situation of contact appears to reduce the end of a thread, and simultaneously, conducting rod 58 gets into the inside joint of electrically conductive recess 65, make conducting rod 58 and bottom current conducting plate 44 fully contact, and change traditional line ball mode, this kind of mode does benefit to and laminates completely with the end of a thread, can't remove, can not cause the damage to the end of a thread, it is electrically conductive stable, long service life.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.