A frequency conversion and voltage conversion device

Abstract

The present invention provides a frequency conversion and voltage conversion equipment, comprising a base, a transformer body is arranged on the base, a sliding groove is opened on the base along the circumference of the base, a sliding block is slidably arranged in the sliding groove, a mounting rod is arranged on the sliding block, a mounting frame is arranged on the top of the mounting rod, a cooling fan is arranged on the mounting frame, a first gear is rotatably sleeved on the mounting rod, a rack meshing with the first gear is arranged on the top of the base, and a driving assembly is arranged on the mounting rod; a second gear is rotatably sleeved on the mounting rod, a mounting block is arranged on the base, an arc-shaped groove is arranged on one side of the mounting block close to the inside of the base, a tooth groove is opened on the inner wall of the groove, a mounting shaft is arranged at the bottom of the mounting frame, the bottom of the mounting shaft is transmission-connected with the mounting rod, a transmission assembly is arranged on the mounting rod, and a limiter is arranged on the mounting rod. The present invention can improve the heat dissipation performance of the frequency conversion and voltage conversion equipment and improve the safety and reliability of the transformer.

Description

Technical Field

[0001] The present invention relates to the technical field of voltage conversion equipment, and in particular to a frequency conversion voltage conversion equipment. Background Art

[0002] The contents in this section merely provide background information related to the present invention and may not constitute prior art.

[0003] Frequency conversion and voltage conversion equipment is an electrical device used to change the voltage and frequency of alternating current. It is usually composed of two parts: a frequency converter and a transformer. It can adjust the output voltage and frequency according to load requirements to achieve precise control of motors or other electrical equipment. The frequency converter is the core part of the frequency conversion and voltage conversion equipment. It can convert fixed-frequency alternating current into variable-frequency alternating current. The transformer is a device used to adjust the voltage. It can increase or decrease the voltage of alternating current as needed. Frequency conversion and voltage conversion equipment has important and extensive applications in industrial automation, power transmission, motor control and other fields. It can improve energy utilization efficiency, reduce mechanical wear, increase equipment life, and achieve more precise speed and power control.

[0004] With the development of power electronics technology, high-frequency transformers are increasingly used in power systems. Compared with traditional industrial frequency transformers, high-frequency transformers have the advantages of small size, light weight, high efficiency, and fast response speed. However, with the increase in voltage level and capacity, the heat dissipation problem has become more and more prominent. High-voltage, large-capacity high-frequency transformers will generate a lot of heat during operation. This heat mainly includes copper loss, iron loss, switching loss and stray loss. Especially under high-load working conditions, the internal heat accumulation of the frequency conversion and voltage conversion equipment cannot be discharged in time, which will cause the temperature inside the equipment to rise sharply, the performance of the insulation material will decrease, and the safety and reliability of the transformer will be affected. Therefore, for frequency conversion transformers, how to quickly and efficiently dissipate heat is particularly important.

[0005] In the selection of traditional heat dissipation methods, since the frequency converter is an electrical device, in order to ensure the long-term and effective operation of the equipment, one of natural air cooling and forced air cooling or a combination of the two is usually selected to dissipate the heat of the equipment. Among them, natural air cooling refers to the heat exchange between the equipment and the air in the surrounding environment to achieve heat dissipation, and forced air cooling uses a cooling fan to induce air circulation in the surrounding environment of the transformer to achieve a heat dissipation method that takes away the heat generated by the inverter. However, in actual use, the frequency converter dissipates heat from the internal iron core to the outside, and the heat is evenly distributed around the transformer. Through forced air cooling, heat dissipation can often only be blown away from one side of the transformer. The side facing away from the air-cooled radiator not only has to bear the heat of the transformer itself, but also has to bear the heat brought by the air flow. This causes different positions of the transformer to bear different amounts of heat. During long-term use, it is easy to cause certain damage to the transformer itself, reducing the performance of the transformer while affecting the safety and reliability of the transformer. Summary of the invention

[0006] In order to solve the above technical problems, the object of the present invention is to provide a frequency conversion and voltage conversion device, which can improve the heat dissipation performance of the frequency conversion and voltage conversion device and improve the safety and reliability of the transformer.

[0007] The purpose of the present invention is achieved through the following technical solutions:

[0008] A frequency conversion and voltage conversion device comprises a base, a transformer body is arranged on the base, a sliding groove is opened on the base along the circumference of the base, a sliding block is slidably arranged in the sliding groove, a mounting rod is arranged on the sliding block, a mounting frame is arranged on the top of the mounting rod, a cooling fan is arranged on the mounting frame, a first gear is coaxially rotatably sleeved on the mounting rod, a rack is fixedly arranged on the top of the base along the circumference of the base, the rack is meshed with the first gear, a driving assembly is arranged on the mounting rod, and the driving assembly is used to drive the first gear to rotate; A second gear is coaxially rotated on the rod, and mounting blocks are fixedly arranged at the four corners of the base. An arc-shaped groove is arranged on one side of the mounting block close to the inside of the base, and a tooth groove for the second gear to mesh is arranged on the inner wall of the groove. A mounting shaft is arranged at the bottom of the mounting frame, and the bottom of the mounting shaft is transmission-connected to the mounting rod. A transmission assembly is arranged on the mounting rod, and one end of the transmission assembly is transmission-connected to the second gear, and the other end is transmission-connected to the mounting shaft. A limit member is arranged on the mounting rod, and the limit member is used to limit the deflection angle of the mounting shaft.

[0009] In some possible embodiments, the driving assembly includes a driving motor and a driving gear, wherein the driving motor is fixedly disposed on a sliding block, the driving gear is coaxially fixedly disposed on an output shaft of the driving motor, the driving gear is meshed with a first gear, a mounting seat is fixedly disposed on the top of the mounting rod, the bottom of the mounting shaft is rotatably disposed on the top of the mounting seat, the mounting seat is hollow, the transmission assembly is disposed in the mounting seat, and the limiting member is disposed in the mounting seat.

[0010] In some possible embodiments, the transmission assembly includes a first transmission gear, a second transmission gear and a third transmission gear. The first transmission gear is coaxially rotatably sleeved on the mounting rod. The first transmission gear is coaxially fixedly connected to the second gear. A transmission shaft is rotatably arranged in the mounting seat. The axis of the transmission shaft and the axis of the mounting rod are perpendicular to each other. The second transmission gear is coaxially fixedly sleeved on the transmission shaft. The bottom end of the mounting shaft passes through the top wall of the mounting seat and extends into the interior of the mounting seat. The third transmission gear is coaxially fixedly sleeved on the bottom end of the mounting shaft. The first transmission gear and the third transmission gear are transmission connected via the second transmission gear.

[0011] In some possible embodiments, two second transmission gears are provided, two transmission shafts are provided, the two transmission shafts are symmetrically arranged inside the mounting seat along the axis of the mounting rod, and the second transmission gears are coaxially fixedly connected with the transmission shafts in a one-to-one correspondence.

[0012] In some possible embodiments, the limit member is configured as a latch pin, a strip groove is provided on the inner wall of the mounting seat along the radial direction of the transmission shaft, a strip block is slidably provided in the strip groove, the limit member is fixedly provided at one end of the strip block away from the strip groove, a limit groove is provided on the transmission shaft for inserting the limit member, an elastic member is provided in the strip groove, the elastic member is used to drive the limit member to move toward the limit groove, the notch side wall of the limit groove is provided as an inclined surface, and the end of the limit member is provided as a wedge shape that matches the inclined surface.

[0013] In some possible embodiments, four strip-shaped grooves are evenly arranged along the circumference of the transmission shaft, the arc angle between adjacent strip-shaped grooves is set to 90°, and the limiting grooves are arranged in a one-to-one correspondence with the strip-shaped grooves.

[0014] In some possible embodiments, a through hole is opened at the bottom of the mounting seat, the top end of the mounting rod extends into the mounting seat through the through hole, a connecting rod is fixedly provided at the top end of the mounting rod, and the end of the connecting rod away from the mounting rod is fixedly connected to the inner wall of the mounting seat.

[0015] In some possible embodiments, a plurality of mounting holes are provided on the mounting frame, and the plurality of mounting holes are evenly provided on the mounting frame in a vertical direction. A cooling fan is provided in each mounting hole, and side walls of the mounting frame close to and away from the transformer body are covered with dustproof nets, the dustproof nets are detachably connected to the mounting frame, and fixings are provided on the dustproof nets, and the fixings are used to limit the position of the dustproof net on the mounting frame.

[0016] In some possible embodiments, the transformer body includes a bottom plate and a top plate located on the bottom plate, two mirror-symmetrical iron cores are arranged between the bottom plate and the top plate, a mounting frame is provided around the periphery of the central column of the two iron cores, a winding is wound around the periphery of the mounting frame, a protective plate is provided around the periphery of the winding, a cover body is provided on the base, and ventilation holes are opened on the peripheral wall of the cover body.

[0017] In some possible embodiments, a ball is embedded in the bottom of the sliding block, and the ball is used to roll in contact with the inner bottom wall of the sliding groove.

[0018] In summary, the technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0019] The frequency conversion and voltage conversion equipment disclosed in the present invention drives the first gear to rotate through a driving component, and then drives the sliding block to move in the sliding groove along the circumference of the base. In this process, when the mounting rod passes through the mounting block, the second gear is driven to rotate through the arc groove, and then the mounting shaft is driven to rotate through the transmission component. With the rotation of the mounting shaft, the mounting frame can be driven to deflect, thereby realizing the deflection of the cooling fan, so that the air outlet end of the cooling fan is always arranged toward the transformer body on the base. During the operation of the transformer, the cooling fan rotates around the transformer body along the circumference of the base in the sliding groove, so that different surfaces of the transformer body can be evenly cooled by blowing air, which can effectively avoid the accumulation of heat on one side of the transformer, thereby effectively improving the protection effect of the transformer, reducing the damage to the transformer caused by heat accumulation, and improving the safety and reliability of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the cover body according to an embodiment of the present invention;

[0022] Figure 3 A schematic diagram of the internal structure of a transformer body according to an embodiment of the present invention;

[0023] Figure 4 A schematic structural diagram of a base according to an embodiment of the present invention;

[0024] Figure 5 is a schematic structural diagram of a driving assembly according to an embodiment of the present invention;

[0025] Figure 6 It is a structural schematic diagram of a transmission assembly according to an embodiment of the present invention;

[0026] Figure 7 It is a schematic diagram of the exploded structure of the limiting member according to an embodiment of the present invention;

[0027] Figure 8 for Figure 7 A magnified view of part A in FIG.

[0028] Fig. 9 It is a schematic diagram of the structure of the limit groove of an embodiment of the present invention;

[0029] Fig.10 The figure is a schematic diagram of the explosion structure of the dustproof net according to an embodiment of the present invention.

[0030] Icons: 1. Base; 11. Transformer body; 111. Bottom plate; 112. Top plate; 113. Iron core; 114. Mounting frame; 115. Winding; 116. Protective plate; 12. Cover; 121. Ventilation hole; 13. Sliding groove; 131. Sliding block; 14. Mounting rod; 15. Mounting frame; 16. Cooling fan; 2. First gear; 21. Rack; 22. Second gear; 23. Mounting block; 24. Arc groove; 25. Tooth groove; 3. Drive assembly ; 31. Driving motor; 32. Driving gear; 4. Mounting shaft; 41. Mounting seat; 42. Through hole; 43. Connecting rod; 5. Transmission assembly; 51. First transmission gear; 52. Second transmission gear; 53. Third transmission gear; 54. Transmission shaft; 6. Limiting member; 61. Strip groove; 62. Strip block; 63. Limiting groove; 64. Elastic member; 65. Inclined surface; 66. Guide groove; 67. Guide block; 7. Mounting hole; 71. Dust net; 72. Fixing member. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] The following reference Figures 1 to 10 The present invention is described in further detail.

[0033] Reference Figure 1 and Figure 2A frequency conversion and voltage conversion device includes a base 1, on which a transformer body 11 is arranged. The base 1 is mainly used to provide a carrier for the transformer body 11, and the base 1 can have a roughly rectangular shape.

[0034] As an embodiment of the present invention, the transformer body 11 can be installed on the top of the base 1 by bolt connection, wherein the transformer body 11 is used to provide the functions of the variable frequency transformer known in the prior art, such as voltage conversion and current transmission.

[0035] Reference Figure 2 and Figure 3 The transformer body 11 includes a bottom plate 111 and a top plate 112 located on the bottom plate 111. Two mirror-symmetrical iron cores 113 are arranged between the bottom plate 111 and the top plate 112. The shape of the iron core 113 is set to be E-shaped. The upper iron core 113 is fixed to the top plate 112, and the lower iron core 113 is fixed to the bottom plate 111. A mounting frame 114 is provided on the outer periphery of the central column of the two iron cores 113. A winding 115 is wound around the outer periphery of the mounting frame 114, and a protective plate 116 is provided on the outer periphery of the winding 115.

[0036] It is understandable that, since the present invention does not improve the structure of the transformer body 11, the specific structure of the transformer body 11 and its working principle can refer to the structure described in the known variable frequency transformer in the prior art, and no further details will be given here.

[0037] As an embodiment of the present invention, refer to Figure 1 A cover body 12 is provided on the base 1, and ventilation holes 121 are opened on the peripheral wall of the cover body 12. In actual use, the cover body 12 and the base 1 are connected to each other by bolts. The ventilation holes 121 can realize air convection inside and outside the cover body 12 to improve the heat dissipation effect of the transformer body 11.

[0038] Reference Figure 2 and Figure 4 A sliding groove 13 is provided at the top of the base 1 along the circumference of the base 1, a sliding block 131 is slidably provided in the sliding groove 13, the sliding groove 13 is provided around the circumference of the base 1, the sliding block 131 is provided below the sliding groove 13, and a mounting rod 14 (such as Figure 6As shown in the figure, a mounting frame 15 is provided at the top of the mounting rod 14, a cooling fan 16 is provided on the mounting frame 15, a first gear 2 is coaxially rotatably sleeved on the mounting rod 14, the diameter of the mounting rod 14 is smaller than the top opening width of the sliding groove 13, a rack 21 is fixedly provided at the top of the base 1 along the circumference of the base 1, the rack 21 is meshed with the first gear 2, the rack 21 is arranged around the circumference of the base 1, and a fillet is provided at the corner of the rack 21, and the radius of the fillet is adapted to the radius of the first gear 2.

[0039] Reference Figure 5 , a driving assembly 3 is arranged on the mounting rod 14, and the driving assembly 3 is used to drive the first gear 2 to rotate. As a possible embodiment of the present invention, the driving assembly 3 includes a driving motor 31 and a driving gear 32. The driving motor 31 is fixedly mounted on the sliding block 131, and the driving gear 32 is coaxially fixedly arranged on the output shaft of the driving motor 31, and the driving gear 32 is meshed with the first gear 2. In actual use, the driving motor 31 is started, and the driving motor 31 drives the driving gear 32 to rotate, thereby driving the first gear 2 to rotate. Since the other side of the first gear 2 is meshed with the rack 21, as the first gear 2 rotates, the sliding block 131 can be driven to move in the sliding groove 13. Since the fillet radius at the corner of the rack 21 is adapted to the radius of the first gear 2, the motion trajectory of the sliding block 131 on the base 1 is a rectangular motion trajectory. As the sliding block 131 moves in the sliding groove 13, the cooling fan 16 can be driven to make a circumferential motion around the transformer body 11.

[0040] Reference Figure 5 and Figure 6 A second gear 22 is coaxially rotatably sleeved on the mounting rod 14, mounting blocks 23 are fixedly arranged at the four corners of the base 1, an arc-shaped groove 24 is arranged on one side of the mounting block 23 close to the inside of the base 1, and a tooth groove 25 for the second gear 22 to mesh is opened on the inner wall of the groove, and the radius of the arc-shaped groove 24 is matched with the radius of the second gear 22. A mounting shaft 4 is arranged at the bottom of the mounting frame 15, and the bottom of the mounting shaft 4 is transmission-connected to the mounting rod 14, and a transmission assembly 5 is arranged on the mounting rod 14, one end of the transmission assembly 5 is transmission-connected to the second gear 22, and the other end is transmission-connected to the mounting shaft 4, and a limit member 6 is arranged on the mounting rod 14, and the limit member 6 is used to limit the deflection angle of the mounting shaft 4.

[0041] Among them, refer to Figure 6 A mounting seat 41 is fixedly provided on the top of the mounting rod 14 , the bottom of the mounting shaft 4 is rotatably provided on the top of the mounting seat 41 , the mounting seat 41 is hollow, and the transmission assembly 5 and the limit member 6 are both provided in the mounting seat 41 .

[0042] Reference Figure 6A through hole 42 is provided at the bottom of the mounting seat 41, and the top end of the mounting rod 14 extends into the mounting seat 41 through the through hole 42. A connecting rod 43 is fixedly provided at the top end of the mounting rod 14, and one end of the connecting rod 43 away from the mounting rod 14 is fixedly connected to the inner wall of the mounting seat 41.

[0043] Reference Figure 6 As an embodiment of the present invention, the transmission assembly 5 includes a first transmission gear 51, a second transmission gear 52 and a third transmission gear 53. The first transmission gear 51 is coaxially rotatably sleeved on the mounting rod 14. The first transmission gear 51 is coaxially fixedly connected with the second gear 22, that is, the first transmission gear 51 can rotate synchronously with the second gear 22. A transmission shaft 54 ​​is rotatably arranged in the mounting seat 41. The axis of the transmission shaft 54 ​​is perpendicular to the axis of the mounting rod 14. The second transmission gear 52 is coaxially fixedly sleeved on the transmission shaft 54. The bottom end of the mounting shaft 4 passes through the top wall of the mounting seat 41 and extends into the interior of the mounting seat 41. The third transmission gear 53 is coaxially fixedly sleeved on the bottom end of the mounting shaft 4. The first transmission gear 51 and the third transmission gear 53 are transmission-connected through the second transmission gear 52.

[0044] Reference Figure 6 As an embodiment of the present invention, the first transmission gear 51, the second transmission gear 52 and the third transmission gear 53 are all configured as bevel gears with inclined surfaces 65, the rotation axes of the first transmission gear 51 and the third transmission gear 53 are coaxially arranged, and the rotation axis of the second transmission gear 52 is perpendicular to the rotation axis of the first transmission gear 51.

[0045] Reference Figure 6 As an embodiment of the present invention, two second transmission gears 52 are provided, and two transmission shafts 54 are provided inside the mounting seat 41. The two transmission shafts 54 are symmetrically arranged on the two inner walls of the mounting seat 41 along the axis of the mounting rod 14. The second transmission gears 52 and the transmission shafts 54 are coaxially fixedly connected one by one.

[0046] In actual use, the driving motor 31 drives the driving gear 32 to rotate, and then drives the first gear 2 to rotate. With the rotation of the first gear 2, the purpose of driving the cooling fan 16 to make circumferential motion around the transformer body 11 is achieved. In this process, when the cooling fan 16 passes the corner of the base 1, the second gear 22 is meshed with the tooth groove 25 in the arc groove 24. With the movement of the slider, the second gear 22 rotates clockwise under the action of the arc groove 24. With the rotation of the second gear 22, the first transmission gear 51 can be driven on the mounting seat. 41 rotates clockwise. Since the second transmission gear 52 is meshed with the first transmission gear 51, and the third transmission gear 53 is meshed with the second transmission gear 52, as the first transmission gear 51 rotates clockwise, the third transmission gear 53 can be driven to rotate counterclockwise, and the third transmission gear 53 drives the mounting shaft 4 to rotate counterclockwise, thereby driving the mounting frame 15 to rotate counterclockwise. As the mounting frame 15 rotates, the direction of the air outlet of the cooling fan 16 can be adjusted, so that the air outlet of the cooling fan 16 is deflected by 90°, and the other side wall of the transformer body 11 is cooled and dissipated.

[0047] As an embodiment of the present invention, by setting a suitable meshing ratio, the rotation angle of the second gear 22 is 90° after the second gear 22 completely passes through the arc groove 24. At this time, since the first transmission gear 51 is coaxially fixedly connected with the second gear 22, the rotation angle of the first transmission gear 51 is also 90°, and the second transmission gear 52 itself has the effect of transmitting and changing the rotation direction. Therefore, as the first transmission gear 51 rotates 90° clockwise, the third transmission gear 53 rotates 90° counterclockwise at this time, so that the air outlet of the cooling fan 16 is still set toward the transformer body 11, so as to achieve the effect of blowing air to cool down and dissipate heat on the transformer body 11.

[0048] Reference Figure 7 , Figure 8 and Fig. 9 As an embodiment of the present invention, the limit member 6 is configured as a latch, a strip groove 61 is provided on the inner wall of the mounting seat 41 along the radial direction of the transmission shaft 54, a strip block 62 is slidably provided in the strip groove 61, the limit member 6 is fixedly provided at one end of the strip block 62 away from the strip groove 61, a limit groove 63 for inserting the limit member 6 is provided on the transmission shaft 54, an elastic member 64 is provided in the strip groove 61, and the elastic member 64 is used to drive the limit member 6 to move toward the limit groove 63.

[0049] Reference Figure 8 As an embodiment of the present invention, the elastic member 64 is configured as a compression spring, one end of the elastic member 64 abuts against the inner wall of the strip groove 61, and the other end abuts against the side wall of the strip block 62. During the operation of the device, the elastic member 64 is always in a compressed state.

[0050] In addition, refer to Figure 8 and Fig. 9 The side wall of the limiting groove 63 is set as an inclined surface 65, and the end of the limiting member 6 is set as a wedge shape that matches the inclined surface 65.

[0051] During actual use, when the second gear 22 is not engaged with the tooth groove 25 of the arc-shaped groove 24, the end of the limit member 6 is located in the limit groove 63 under the action of the elastic member 64. In the absence of large external force intervention, the rotation of the transmission shaft 54 ​​is limited. At this time, the second transmission gear 52 cannot be deflected, and the first transmission gear 51 and the third transmission gear 53 are both in a state where they cannot be deflected, and the second gear 22 and the mounting shaft 4, the mounting frame 15 and the cooling fan 16 are all in a state where they cannot be deflected. Since the mounting shaft 4, the mounting frame 15 and the cooling fan 16 cannot deflect, it can be ensured that when the sliding block 131 moves along an edge line of the base 1 in the sliding groove 13, the air outlet direction of the cooling fan 16 does not deviate, so that the air outlet of the cooling fan 16 is always directed toward the transformer body 11 on the base 1, thereby effectively ensuring the cooling effect of the cooling fan 16 on the transformer body 11. Since the second gear 22 cannot deflect, it can be ensured that when the second gear 22 enters the arc-shaped groove 24, the second gear 22 can smoothly mesh with the tooth groove 25 on the surface of the arc-shaped groove 24, further improving the accuracy and precision of the overall transmission of the device, and improving the reliability and stability of the overall device during actual use.

[0052] When the second gear 22 enters the arc-shaped groove 24 and the second gear 22 is meshed with the tooth groove 25 on the arc-shaped groove 24, the second gear 22 has a tendency to rotate, and this tendency is transmitted to the first transmission gear 51, and then transmitted to the transmission shaft 54 ​​through the second transmission gear 52 meshing with the first transmission gear 51, so that the transmission shaft 54 ​​has a tendency to rotate along its own axis. Driven by this tendency, the transmission shaft 54 ​​deflects, and with the deflection of the transmission shaft 54, since the notch of the limit groove 63 is set as an inclined surface 65, and the end of the limit member 6 is set as a wedge shape that matches the inclined surface 65, at this time, the torsional force of the transmission shaft 54 ​​is transmitted to the limit groove 63 through the inclined surface 65. 6, and since the limit member 6 only has vertical displacement in the vertical direction, the limit member 6 moves along the radial direction of the transmission shaft 54 ​​in the direction away from the limit groove 63 under the action of the transmission shaft 54, and finally disengages from the limit groove 63. After the limit member 6 disengages from the limit groove 63, the transmission shaft 54 ​​continues to deflect until the second gear 22 completely disengages from the tooth groove 25 on the arc-shaped groove 24. At this time, the limit member 6 falls back into the limit groove 63 under the action of the elastic member 64, limiting the deflection of the transmission shaft 54. At this time, the second gear 22 and the mounting shaft 4, the mounting frame 15 and the cooling fan 16 are again in a state that cannot be deflected until the second gear 22 enters the arc-shaped groove 24 again and engages with the tooth groove 25.

[0053] As another possible embodiment of the present invention, in order to enable the limit member 6 to be more conveniently disengaged from the limit groove 63, a sliding layer is covered on the end of the limit member 6. The material of the sliding layer can be set to polytetrafluoroethylene, which can effectively reduce the sliding friction between the end of the limit member 6 and the opening inclined surface 65 of the limit groove 63, thereby facilitating relative sliding between the limit member 6 and the opening inclined surface 65 of the limit groove 63.

[0054] As an embodiment of the present invention, refer to Figure 7 and Fig. 9 Four strip grooves 61 are evenly arranged along the circumference of the transmission shaft 54, and the arc angle between adjacent strip grooves 61 is set to 90°. Four limiting grooves 63 are also correspondingly arranged, and the four limiting grooves 63 are arranged one-to-one with the four strip grooves 61, so as to ensure that the single deflection angle of the transmission shaft 54 ​​is 90°, which is compatible with the rotation angle of the second gear 22 and the rotation angle of the mounting frame 15.

[0055] Reference Figure 8A guide groove 66 is provided on the inner wall of the strip groove 61 along the length direction of the strip groove 61, and a guide block 67 is slidably provided in the guide groove 66. The guide block 67 is fixedly connected to the side wall of the strip block 62. When the limiting member 6 moves in the limiting groove 63, the limiting member 6 drives the strip block 62 to move in the strip groove 61, and then drives the guide block 67 to move in the guide groove 66, thereby guiding the movement of the strip block 62 in the strip groove 61.

[0056] Reference Fig.10 A plurality of mounting holes 7 are provided on the mounting frame 15, and the plurality of mounting holes 7 are evenly provided on the mounting frame 15 along the vertical direction. A cooling fan 16 is provided in each mounting hole 7. The side walls of the mounting frame 15 close to and away from the transformer body 11 are covered with dustproof nets 71, and the dustproof net 71 is detachably connected to the mounting frame 15. A fixing member 72 is provided on the dustproof net 71, and the fixing member 72 is used to limit the position of the dustproof net 71 on the mounting frame 15.

[0057] As an embodiment of the present invention, refer to Fig.10 The fixing member 72 is set as a fixing bolt, and the dustproof net 71 can effectively prevent dust or other impurities in the air from adhering to the blades of the cooling fan 16, which can ensure that the device still has a good heat dissipation effect during long-term use.

[0058] As a possible implementation of the present invention, a ball bearing (not shown in the figure) is embedded at the bottom of the sliding block 131, and the ball bearing is used to roll with the inner bottom wall of the sliding groove 13. The provision of the ball bearing can effectively reduce the sliding friction between the sliding block 131 and the inner wall of the sliding groove 13, thereby facilitating the movement of the sliding block 131 in the sliding groove 13, and can also reduce the wear between the sliding block 131 and the sliding groove 13, thereby increasing the service life of the entire device.

[0059] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A frequency conversion and voltage conversion device, comprising a base (1), on which a transformer body (11) is arranged, characterized in that: A sliding groove (13) is provided on the base (1) along the circumference of the base (1), a sliding block (131) is slidably provided in the sliding groove (13), a mounting rod (14) is provided on the sliding block (131), a mounting frame (15) is provided on the top of the mounting rod (14), a cooling fan (16) is provided on the mounting frame (15), a first gear (2) is coaxially rotatably sleeved on the mounting rod (14), a rack (21) is fixedly provided on the top of the base (1) along the circumference of the base (1), the rack (21) meshes with the first gear (2), and a driving assembly (3) is provided on the mounting rod (14), the driving assembly (3) is used to drive the first gear (2) to rotate; A second gear (22) is coaxially rotatably sleeved on the mounting rod (14); mounting blocks (23) are fixedly arranged at the four corners of the base (1); an arc-shaped groove (24) is arranged on one side of the mounting block (23) close to the inside of the base (1); a tooth groove (25) for the second gear (22) to mesh is provided on the inner wall of the groove; a mounting shaft (4) is arranged at the bottom of the mounting frame (15); the bottom of the mounting shaft (4) is transmission-connected to the mounting rod (14); a transmission assembly (5) is arranged on the mounting rod (14); one end of the transmission assembly (5) is transmission-connected to the second gear (22), and the other end is transmission-connected to the mounting shaft (4); a limiting member (6) is arranged on the mounting rod (14); the limiting member (6) is used to limit the deflection angle of the mounting shaft (4); The driving assembly (3) comprises a driving motor (31) and a driving gear (32); the driving motor (31) is fixedly arranged on the sliding block (131); the driving gear (32) is coaxially fixedly arranged on the output shaft of the driving motor (31); the driving gear (32) is meshed with the first gear (2); a mounting seat (41) is fixedly arranged on the top of the mounting rod (14); the bottom of the mounting shaft (4) is rotatably arranged on the top of the mounting seat (41); the mounting seat (41) is hollow; the transmission assembly (5) is arranged in the mounting seat (41); and the limiting member (6) is arranged in the mounting seat (41); The transmission assembly (5) comprises a first transmission gear (51), a second transmission gear (52) and a third transmission gear (53); the first transmission gear (51) is coaxially rotatably sleeved on the mounting rod (14); the first transmission gear (51) is coaxially fixedly connected to the second gear (22); a transmission shaft (54) is rotatably arranged in the mounting seat (41); the axis of the transmission shaft (54) is perpendicular to the axis of the mounting rod (14); the second transmission gear (52) is coaxially fixedly sleeved on the transmission shaft (54); the bottom end of the mounting shaft (4) passes through the top wall of the mounting seat (41) and extends into the interior of the mounting seat (41); the third transmission gear (53) is coaxially fixedly sleeved on the bottom end of the mounting shaft (4); the first transmission gear (51) and the third transmission gear (53) are transmission-connected via the second transmission gear (52).

2. The frequency conversion and voltage conversion device according to claim 1, characterized in that: Two second transmission gears (52) are provided, and two transmission shafts (54) are provided. The two transmission shafts (54) are symmetrically arranged inside the mounting seat (41) along the axis of the mounting rod (14). The second transmission gears (52) and the transmission shafts (54) are coaxially fixedly connected in a one-to-one correspondence.

3. The frequency conversion and voltage conversion device according to claim 2, characterized in that: The limiting member (6) is arranged as a latch pin, a strip groove (61) is provided on the inner wall of the mounting seat (41) along the radial direction of the transmission shaft (54), a strip block (62) is slidably arranged in the strip groove (61), the limiting member (6) is fixedly arranged at one end of the strip block (62) away from the strip groove (61), a limiting groove (63) for inserting the limiting member (6) is provided on the transmission shaft (54), an elastic member (64) is arranged in the strip groove (61), the elastic member (64) is used to drive the limiting member (6) to move toward the limiting groove (63), the notch side wall of the limiting groove (63) is arranged as an inclined surface (65), and the end of the limiting member (6) is arranged as a wedge shape that matches the inclined surface (65).

4. The frequency conversion and voltage conversion device according to claim 3, characterized in that: Four strip grooves (61) are evenly arranged along the circumference of the transmission shaft (54); the arc angle between adjacent strip grooves (61) is set to 90°; and the limiting grooves (63) are arranged in one-to-one correspondence with the strip grooves (61).

5. The frequency conversion and voltage conversion device according to claim 1, characterized in that: A through hole (42) is provided at the bottom of the mounting seat (41), and the top end of the mounting rod (14) extends through the through hole (42) into the interior of the mounting seat (41). A connecting rod (43) is fixedly provided at the top end of the mounting rod (14), and one end of the connecting rod (43) away from the mounting rod (14) is fixedly connected to the inner wall of the mounting seat (41).

6. The frequency conversion and voltage conversion equipment according to claim 1, characterized in that: A plurality of mounting holes (7) are provided on the mounting frame (15), the plurality of mounting holes (7) being evenly provided on the mounting frame (15) in a vertical direction, a cooling fan (16) being provided in each mounting hole (7), a dustproof net (71) being provided on the side walls of the mounting frame (15) close to and away from the transformer body (11), the dustproof net (71) being detachably connected to the mounting frame (15), a fixing member (72) being provided on the dustproof net (71), the fixing member (72) being used to limit the position of the dustproof net (71) on the mounting frame (15).

7. The frequency conversion and voltage conversion device according to claim 1, characterized in that: The transformer body (11) comprises a bottom plate (111) and a top plate (112) located on the bottom plate (111); two mirror-symmetrical iron cores (113) are arranged between the bottom plate (111) and the top plate (112); a mounting frame (114) is sleeved on the periphery of the central columns of the two iron cores (113); a winding (115) is wound around the periphery of the mounting frame (114); a protective plate (116) is sleeved on the periphery of the winding (115); a cover body (12) is provided on the base (1); and ventilation holes (121) are provided on the peripheral wall of the cover body (12).

8. The frequency conversion and voltage conversion device according to claim 1, characterized in that: A ball bearing is embedded in the bottom of the sliding block (131), and the ball bearing is used for rolling contact with the inner bottom wall of the sliding groove (13).

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