Cabinet type four-quadrant frequency converter

Abstract

The utility model belongs to the technical field of frequency converters, and particularly relates to a cabinet type four-quadrant frequency converter comprising a housing, the housing comprises an upper cavity and a lower cavity, the inner wall of the upper cavity is provided with a screw rod groove, the bottom of the inner wall of the lower cavity is fixedly connected with a double-end motor, the output ends of the double-end motor are connected with a driving shaft, and the other end of the driving shaft is connected with a driving bevel gear. The two sides of the bottom of the inner wall of the lower cavity are connected with supports, driven shafts are installed in the supports, the two ends of each driven shaft are connected with linkage bevel gears, the outer wall of the middle of each driven shaft is connected with a driven bevel gear, the bottom of the inner wall of the lower cavity is movably connected with a lifting bevel gear, and the top of each lifting bevel gear is connected with a lifting lead screw. A T-shaped block is fixedly connected to the bottom of the telescopic plate, linkage columns are fixedly connected to the rear ends of the outer walls of the two sides of the telescopic plate, and linkage grooves are formed in the inner walls of the two sides of the upper cavity. According to the utility model, under the action of the telescopic plate, the frequency converter main body can be installed at the inner top of the housing without the help of external equipment, thereby saving time and labor, and improving the installation efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of frequency converters, and particularly relates to a cabinet-type four-quadrant frequency converter. Background Art

[0002] A four-quadrant frequency converter refers to a frequency converter that can drive a motor to operate in four quadrants. In some cases, the motor needs to rotate in the reverse direction. In addition, the torque direction may also change. This process usually requires the participation of a four-quadrant frequency converter. With the use of frequency converter speed regulation, the change of torque direction can be achieved without relying on the change of rotation direction.

[0003] Before the four-quadrant frequency converter leaves the factory, the installation of the frequency converter main body is a crucial step. The existing cabinet-type frequency converter main body needs to be installed on the inner top or inner bottom of the outer shell. When installing the frequency converter main body on the inner top, due to the large self-weight of the frequency converter main body, external equipment needs to be used to lift the frequency converter main body to the designated position on the inner top of the outer shell and then tighten and install it, which is time-consuming and laborious, and the installation efficiency is low. Summary of the Invention

[0004] The purpose of the utility model is to provide a cabinet-type four-quadrant frequency converter, which can install the frequency converter main body on the inner top of the outer shell without relying on external equipment, saving time and effort and improving the installation efficiency.

[0005] To achieve the above object, the technical solution adopted by the utility model is as follows: A cabinet-type four-quadrant frequency converter is provided, including a housing, the housing includes an upper cavity and a lower cavity, a lead screw groove is provided on the inner wall of the upper cavity, and the number of lead screw grooves is multiple. Communication holes are provided at the bottom of the inner walls of multiple lead screw grooves. A double-headed motor is fixedly connected to the bottom of the inner wall of the lower cavity. Driving shafts are fixedly connected to both output ends of the double-headed motor. A driving bevel gear is fixedly connected to the other end of the driving shaft. Supports are fixedly connected to both sides of the bottom of the inner wall of the lower cavity, and the number of supports is two respectively. Driven shafts are installed inside both supports. Linkage bevel gears are fixedly connected to both ends of the driven shaft. A driven bevel gear is fixedly connected to the outer wall of the middle part of the driven shaft. Lifting bevel gears are movably connected to the bottom of the inner wall of the lower cavity, and the number of lifting bevel gears is multiple. Lifting lead screws are fixedly connected to the tops of multiple lifting bevel gears. The top of the lifting lead screw is movably connected to the top of the inner wall of the upper cavity. A lifting plate is arranged inside the upper cavity. The inner walls of the four legs of the lifting plate are respectively threadedly connected to the outer walls of multiple lifting lead screws. T-shaped grooves are provided at the top of the lifting plate, and the number of T-shaped grooves is two. A telescopic plate is arranged at the top of the lifting plate. T-shaped blocks are fixedly connected to the bottom of the telescopic plate, and the number of T-shaped blocks is two. The two T-shaped blocks are respectively located inside the two T-shaped grooves. Linkage columns are fixedly connected to the rear ends of the outer walls on both sides of the telescopic plate. Linkage grooves are provided on both inner walls of the upper cavity, and the number of linkage grooves is two. The linkage groove is located inside the lower linkage groove.

[0006] Optionally, the driving bevel gear meshes with the driven bevel gear, and the linkage bevel gear meshes with the lifting bevel gear.

[0007] Optionally, support rods are fixedly connected to the front ends of the outer walls on both sides of the telescopic plate. Slide columns are fixedly connected to the outer walls of the other ends of the support rods. The slide columns are located inside the upper linkage groove.

[0008] Optionally, heat dissipation grooves are provided on the rear outer wall of the housing, and the number of heat dissipation grooves is multiple. Rain shields are fixedly connected to the rear outer wall of the housing, and the number of rain shields is multiple. The multiple rain shields correspond to the positions of the multiple heat dissipation grooves respectively.

[0009] Optionally, an exhaust fan is fixedly connected to the top of the housing. The exhaust fan is communicated with the upper cavity. A cabin door is movably connected to the front outer wall of the housing through a hinge. Universal wheels are movably connected to the bottom of the housing, and the number of universal wheels is multiple.

[0010] Optionally, a frequency converter main body is fixedly connected to the top of the telescopic plate through bolts. A display screen is installed on the outer wall of the cabin door.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] Before installing the frequency converter main body, the lifting plate is located at the bottom of the upper cavity, and a part of the telescopic plate is located outside the upper cavity. At the same time, the linkage columns respectively connected to the outer walls on both sides of the telescopic plate are located at the bottom of the lower linkage groove, and the sliding columns connected to the outer wall of the top of the support rod are located at the bottom of the upper linkage groove; the frequency converter main body is fixed on the top of the telescopic plate through a plurality of bolts, and then the motor inside the lower cavity operates. The output end of the motor drives the two drive shafts and the drive bevel gears connected to the drive shafts to rotate, thereby driving the driven bevel gear to rotate, and then driving the driven shaft to rotate. The driven shaft drives the linkage bevel gears connected to both ends of the driven shaft to rotate, thereby driving the lifting bevel gear and the lifting screw rod connected to the top of the lifting bevel gear to rotate, and then driving the lifting plate to rise. When the lifting plate rises, the linkage columns connected to the outer walls on both sides of the telescopic plate move along the inside of the lower linkage groove, and the two T-shaped blocks connected to the bottom of the telescopic plate respectively move upward into the upper cavity along the two T-shaped grooves opened on the top of the lifting plate, so that the telescopic plate moves into the upper cavity along with the movement of the lifting plate, thus the frequency converter main body can be installed on the inner top of the housing without the aid of external equipment, saving time and effort and improving the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 is the first perspective three-dimensional structure diagram of the present utility model;

[0015] Figure 2 is the three-dimensional structure diagram of the screw rod groove of the present utility model;

[0016] Figure 3 is the three-dimensional structure diagram of the linkage groove of the present utility model;

[0017] Figure 4 is the three-dimensional structure diagram of the lifting plate of the present utility model;

[0018] Figure 5 is the three-dimensional structure diagram of the double-headed motor of the present utility model;

[0019] Figure 6 is the three-dimensional structure diagram of the telescopic plate of the present utility model;

[0020] Figure 7 is the three-dimensional structure diagram of the rain shield of the present utility model;

[0021] Figure 8 This is a schematic three-dimensional structure diagram of the warehouse door of the present utility model.

[0022] In the figure: 1. Outer shell; 2. Upper cavity; 3. Lower cavity; 4. Lead screw groove; 5. Communication hole; 6. Double-headed motor; 7. Driving shaft; 8. Driving bevel gear; 9. Support; 10. Driven shaft; 11. Linkage bevel gear; 12. Driven bevel gear; 13. Lifting bevel gear; 14. Lifting lead screw; 15. Lifting plate; 16. T-shaped groove; 17. Telescopic plate; 18. T-shaped block; 19. Linkage column; 20. Linkage groove; 21. Support rod; 22. Slide column; 23. Heat dissipation groove; 24. Rain shield; 25. Exhaust fan; 26. Warehouse door; 27. Universal wheel; 28. Inverter main body; 29. Display screen. Specific embodiments

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0025] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model.

[0026] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0027] Refer to Figure 1-8, a cabinet - type four - quadrant frequency converter provided by an embodiment of the present utility model will be described below. A cabinet - type four - quadrant frequency converter includes a housing 1. The housing 1 includes an upper cavity 2 and a lower cavity 3. A lead screw groove 4 is provided on the inner wall of the upper cavity 2, and the number of lead screw grooves 4 is multiple. Communication holes 5 are provided at the bottom of the inner walls of the multiple lead screw grooves 4. A double - headed motor 6 is fixedly connected to the bottom of the inner wall of the lower cavity 3. Driving shafts 7 are fixedly connected to both output ends of the double - headed motor 6. Driving bevel gears 8 are fixedly connected to the other ends of the driving shafts 7. Two supports 9 are fixedly connected to both sides of the bottom of the inner wall of the lower cavity 3, and the number of supports 9 is two respectively. Driven shafts 10 are installed inside the two supports 9. Linkage bevel gears 11 are fixedly connected to both ends of the driven shafts 10. A driven bevel gear 12 is fixedly connected to the outer wall of the middle part of the driven shaft 10. Lifting bevel gears 13 are movably connected to the bottom of the inner wall of the lower cavity 3, and the number of lifting bevel gears 13 is multiple. Lifting lead screws 14 are fixedly connected to the tops of the multiple lifting bevel gears 13. The tops of the lifting lead screws 14 are movably connected to the top of the inner wall of the upper cavity 2. A lifting plate 15 is arranged inside the upper cavity 2. The inner walls of the four legs of the lifting plate 15 are respectively threadedly connected to the outer walls of the multiple lifting lead screws 14. T - shaped grooves 16 are provided on the top of the lifting plate 15, and the number of T - shaped grooves 16 is two. A telescopic plate 17 is arranged on the top of the lifting plate 15. T - shaped blocks 18 are fixedly connected to the bottom of the telescopic plate 17, and the number of T - shaped blocks 18 is two. The two T - shaped blocks 18 are respectively located inside the two T - shaped grooves 16. Linkage columns 19 are fixedly connected to the rear ends of the outer walls on both sides of the telescopic plate 17. Linkage grooves 20 are provided on both inner walls of the upper cavity 2, and the number of linkage grooves 20 is two. The linkage grooves 20 are located inside the lower - end linkage grooves 20. The driving bevel gear 8 meshes with the driven bevel gear 12, and the linkage bevel gear 11 meshes with the lifting bevel gear 13.

[0028] Before installing the frequency converter main body 28, the lifting plate 15 is located at the bottom of the upper cavity 2, and a part of the telescopic plate 17 is located outside the upper cavity 2. At the same time, the linkage columns 19 respectively connected to the outer walls on both sides of the telescopic plate 17 are located at the bottom of the lower linkage groove 20, and the sliding columns 22 connected to the outer wall of the top of the support rod 21 are located at the bottom of the upper linkage groove 20. The frequency converter main body 28 is fixed to the top of the telescopic plate 17 by a plurality of bolts. Then, the motor inside the lower cavity 3 operates, and the output end of the motor drives the two drive shafts 7 and the drive bevel gears 8 connected to the drive shafts 7 to rotate, thereby driving the driven bevel gear 12 to rotate, and then driving the driven shaft 10 to rotate. The driven shaft 10 drives the linkage bevel gears 11 connected to both ends of the driven shaft 10 to rotate, thereby driving the lifting bevel gear 13 and the lifting screw rod 14 connected to the top of the lifting bevel gear 13 to rotate, and then driving the lifting plate 15 to rise. When the lifting plate 15 rises, the linkage columns 19 connected to the outer walls on both sides of the telescopic plate 17 move along the inside of the lower linkage groove 20, and the two T-shaped blocks 18 connected to the bottom of the telescopic plate 17 respectively move upward into the upper cavity 2 along the two T-shaped grooves 16 opened on the top of the lifting plate 15, so that the telescopic plate 17 moves into the upper cavity 2 along with the movement of the lifting plate 15.

[0029] In another embodiment of the present invention, please refer to Figure 6 , support rods 21 are fixedly connected to the front ends of the outer walls on both sides of the telescopic plate 17, and sliding columns 22 are fixedly connected to the outer walls of the other ends of the support rods 21. The sliding columns 22 are located inside the upper linkage groove 20. When the frequency converter main body 28 is installed on the top of the telescopic plate 17, the support rods 21 can provide an upward pulling force for the telescopic plate 17 to prevent the end of the telescopic plate 17 located outside the upper cavity 2 from tilting downward and leaking.

[0030] In another embodiment of the present invention, please refer to Figures 1 to 7 , heat dissipation grooves 23 are opened on the rear outer wall of the housing 1, and the number of the heat dissipation grooves 23 is multiple. A rain shield 24 is fixedly connected to the rear outer wall of the housing 1, and the number of the rain shields 24 is multiple. The rain shield 24 can prevent rainwater from entering the inside of the upper cavity 2 and the lower cavity 3. The multiple rain shields 24 respectively correspond to the positions of the multiple heat dissipation grooves 23. An exhaust fan 25 is fixedly connected to the top of the housing 1, and the exhaust fan 25 is communicated with the upper cavity 2. A door 26 is movably connected to the front outer wall of the housing 1 through a hinge, and universal wheels 27 are movably connected to the bottom of the housing 1, and the number of the universal wheels 27 is multiple.

[0031] In another embodiment of the present invention, please refer to Figure 8 , the frequency converter main body 28 is fixedly connected to the top of the telescopic plate 17 by bolts, and a display screen 29 is installed on the outer wall of the door 26.

[0032] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A cabinet-type four-quadrant frequency converter, comprising a housing (1), characterized in that: The housing (1) comprises an upper chamber (2) and a lower chamber (3); the inner wall of the upper chamber (2) is provided with a screw groove (4), and the number of the screw grooves (4) is multiple; the inner wall bottoms of the multiple screw grooves (4) are provided with a connecting hole (5); the inner wall bottom of the lower chamber (3) is fixedly connected with a double-headed motor (6); the two output ends of the double-headed motor (6) are fixedly connected with a driving shaft (7); the other end of the driving shaft (7) is fixedly connected with a driving bevel gear (8); the lower chamber (3) The bottom of the inner wall of the lower chamber (3) is fixedly connected with a support (9), and the number of the supports (9) is two. A driven shaft (10) is installed inside the two supports (9). Both ends of the driven shaft (10) are fixedly connected with a linkage bevel gear (11). The middle outer wall of the driven shaft (10) is fixedly connected with a driven bevel gear (12). The bottom of the inner wall of the lower chamber (3) is movably connected with a lifting bevel gear (13), and the number of the lifting bevel gears (13) is multiple. The top of each of the upper chambers (13) is fixedly connected with a lifting screw rod (14), the top of the lifting screw rod (14) is movably connected with the top of the inner wall of the upper chamber (2), a lifting plate (15) is arranged inside the upper chamber (2), the inner walls of the four legs of the lifting plate (15) are respectively threadedly connected with the outer walls of the plurality of lifting screw rods (14), a T-shaped slot (16) is provided on the top of the lifting plate (15), and the number of the T-shaped slots (16) is two, and a telescopic plate ( 17), the bottom of the telescopic plate (17) is fixedly connected with a T-block (18), and the number of the T-blocks (18) is two, and the two T-blocks (18) are respectively located inside the two T-slots (16), the rear ends of the outer walls on both sides of the telescopic plate (17) are fixedly connected with linkage columns (19), the inner walls on both sides of the upper cavity (2) are provided with linkage grooves (20), and the number of the linkage grooves (20) is two, and the linkage grooves (20) are located inside the lower end linkage groove (20).

2. A cabinet-type four-quadrant frequency converter as claimed in claim 1, characterized in that: The driving bevel gear (8) is meshed with the driven bevel gear (12), and the linkage bevel gear (11) is meshed with the lifting bevel gear (13).

3. A cabinet-type four-quadrant frequency converter as claimed in claim 1, characterized in that: The front ends of the outer walls on both sides of the telescopic plate (17) are fixedly connected to support rods (21), and the outer walls at the other ends of the support rods (21) are fixedly connected to sliding columns (22), and the sliding columns (22) are located inside the linkage grooves (20) at the upper ends.

4. A cabinet-type four-quadrant frequency converter as claimed in claim 1, characterized in that: The outer wall of the rear side of the housing (1) is provided with a heat dissipation groove (23), and the number of the heat dissipation grooves (23) is plural. The outer wall of the rear side of the housing (1) is fixedly connected with a rain shield (24), and the number of the rain shield (24) is plural. The plural rain shields (24) respectively correspond to the positions of the plural heat dissipation grooves (23).

5. A cabinet-type four-quadrant frequency converter as claimed in claim 1, characterized in that: The top of the shell (1) is fixedly connected to an exhaust fan (25), the exhaust fan (25) is in communication with the upper chamber (2), the front outer wall of the shell (1) is movably connected to a door (26) via a hinge, the bottom of the shell (1) is movably connected to a universal wheel (27), and the number of the universal wheels (27) is multiple.

6. A cabinet-type four-quadrant frequency converter as claimed in claim 5, characterized in that: The top of the telescopic plate (17) is fixedly connected to a frequency converter body (28) by means of bolts, and a display screen (29) is installed on the outer wall of the compartment door (26).

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