CN113207248B

CN113207248B - Converter box body assembly

Info

Publication number: CN113207248B
Application number: CN202110641607.8A
Authority: CN
Inventors: 何超; 肖国兴; 郑军
Original assignee: Shenzhen Teka Technology Co ltd
Current assignee: Shenzhen Teka Technology Co ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2022-10-25
Anticipated expiration: 2041-06-09
Also published as: CN113207248A

Abstract

The invention belongs to the technical field of frequency converters, and particularly relates to a frequency converter box body assembly which comprises a box body and a base; a first groove is formed in the side wall of one side of the box body, and a second groove is formed in the side wall of the other side of the box body; a group of heat dissipation holes are formed in the bottoms of the first groove and the second groove; a first annular groove is formed in the side wall of the first groove, and a first filter screen is rotatably connected in the first annular groove; a second filter screen is fixedly connected to the side wall of the second groove; a protective shell is connected to the inner wall of the first groove in a threaded manner; the invention provides a frequency converter box body assembly, which aims to solve the problems that a fan is generally arranged on a frequency converter box body to blow air for heat dissipation, but in winter, the external temperature is low, the inside of the frequency converter box body can quickly exchange heat energy with the outside for quick heat dissipation, and at the moment, the fan is not required to additionally provide heat dissipation energy, but the fan can block the natural heat dissipation of a heat dissipation hole.

Description

Converter box body assembly

Technical Field

The invention belongs to the technical field of frequency converters, and particularly relates to a frequency converter box body assembly.

Background

The frequency converter is a power 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, and mainly comprises a rectification unit (alternating current to direct current), a filtering unit, an inversion unit (direct current to alternating current), a braking unit, a driving unit, a detection unit micro-processing unit and the like, and a core circuit module of a frequency converter body has the characteristics of high integration level, high frequency, high voltage, high speed and the like.

In the prior art, a fan is generally arranged on a frequency converter box body to blow air for heat dissipation, but in winter, the external temperature is low, the inside of the frequency converter box body can exchange heat energy with the outside rapidly for rapid heat dissipation, and at the moment, the fan is not needed to provide additional heat dissipation energy, but the fan can block natural heat dissipation of heat dissipation holes.

Disclosure of Invention

In order to make up for the defects of the prior art and solve the problems that a fan is generally arranged on a frequency converter box body to blow air for heat dissipation, but in winter, the external temperature is low, heat energy can be rapidly exchanged with the outside in the frequency converter box body for rapid heat dissipation, at the moment, the fan is not needed to additionally provide heat dissipation energy, but the fan can block natural heat dissipation of a heat dissipation hole, the frequency converter box body assembly provided by the invention has the advantages that the heat dissipation effect of the fan is improved, and the heat dissipation effect of the frequency converter box body is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a frequency converter box body assembly which comprises a box body and a base, wherein the box body is provided with a plurality of through holes; a first groove is formed in the side wall of one side of the box body, and a second groove is formed in the side wall of the other side of the box body; the first groove and the second groove are the same in size; a group of heat dissipation holes are formed in the bottoms of the first groove and the second groove; a first annular groove is formed in the side wall of the first groove, and a first filter screen is rotatably connected in the first annular groove; a second filter screen is fixedly connected to the side wall of the second groove; a protective shell is connected to the inner wall of the first groove in a threaded manner; the center of the protective shell is fixedly connected with a motor, and the output end of the motor is fixedly connected with a first rotating shaft; a group of fan blades are fixedly connected to the shaft of the first rotating shaft extending into the first groove; a group of through grooves are formed in the protective shell; the box body is fixed on the base through the fixing component; a group of fixing frames is fixedly connected to the base; when the frequency converter box body works, a fan is generally arranged for blowing and radiating, but in winter, the external temperature is lower, the inside of the frequency converter box body can quickly exchange heat energy with the outside for quick heat radiation, at the moment, the fan is not required to additionally provide heat radiation energy, but the fan can block the natural heat radiation of the heat radiation holes, therefore, when the frequency converter box body works, in summer or under the condition that the external temperature is in a higher state and the natural heat radiation of the frequency converter box body cannot quickly perform heat radiation, the protective shell is connected into the first groove in a threaded mode, the motor is started to drive the first rotating shaft to rotate, the first rotating shaft rotates to drive the fan blades to rotate, the fan blades rotate to blow air into the box body through the heat radiation holes in the first groove, then the heat is taken away to blow out from the heat radiation holes in the bottom of the second groove, and the temperature in the box body is kept; in winter or when the external temperature is lower, the natural heat dissipation of the box body can meet the temperature requirement of the box body, the protective shell is reversed, the protective shell is taken down from the first groove, the fan blades are separated from the first groove, and the fan blades are prevented from influencing the natural heat dissipation function of the box body; be provided with first filter screen and second filter screen on first recess and the second recess, when the box dispels the heat naturally, the inside steam of box can flow to the external world through the radiating hole this moment, first filter screen and second filter screen can prevent that some great impurity of external environment from getting into in the box, when the installation protecting crust bloies the heat dissipation through the flabellum, the first recess of flabellum department can absorb external gas this moment, block some large-scale impurity through the protecting crust, less impurity through first filter screen entering gas, for example dust etc., can protect the box not receive external environment impurity's influence.

Preferably, a sweeping board is fixedly connected to the side wall of the first groove, and a group of sweeping brushes is fixedly connected to the sweeping board; the cleaning brush is contacted with the first filter screen; a second rotating shaft is fixedly connected to the center of the first filter screen and penetrates through the cleaning plate; the first rotating shaft and the second rotating shaft are connected through a clamping component; during operation, when protecting crust threaded connection was on first recess, first axis of rotation can pass through the screens subassembly with the second axis of rotation and connect this moment, the flabellum is bloied and can be driven external impurity and inhale in the box this moment, first filter screen is in long-term filtration impurity, first filter screen surface can be depended on the jam by impurity appearance, the event drives the second axis of rotation through first axis of rotation and rotates, the second axis of rotation rotates and drives first filter screen and rotate, it is fixed to clean the board this moment, first filter screen rotates, can clean first filter screen comprehensively through cleaning the brush.

Preferably, the detent assembly comprises a third groove; the third groove is formed in the end portion of the second rotating shaft, and a second annular groove is formed in the side wall of the third groove; a pair of symmetrically distributed fixed blocks is fixedly connected in the second annular groove; a pair of symmetrically distributed fourth grooves is formed in the first rotating shaft, and clamping blocks are fixedly connected to the bottoms of the fourth grooves through springs; during operation, when the protective shell threaded connection was on first recess, first axis of rotation stretched into the third recess this moment, and when first axis of rotation rotated, the screens piece in the fourth recess this moment can stretch into the second ring channel under the effect of centrifugal force in, then blocked through the fixed block and let the second axis of rotation follow first axis of rotation and rotate.

Preferably, the securing assembly comprises a first cavity; the base is provided with a placing groove; a first cavity is formed in the base; a first lead screw is rotatably connected to the side wall of the first cavity, and one end of the first lead screw extends out of the base and is fixedly connected with a handle; the first lead screw is provided with two opposite threads, and the first lead screw is connected with a moving block through a lead screw nut pair; a pair of first sliding chutes which are symmetrically distributed is formed between the first cavity and the placing groove; a connecting rod is connected in the first sliding chute in a sliding manner, one end of the connecting rod is fixedly connected to the moving block, and the other end of the connecting rod is fixedly connected with a fixing plate; the fixing plate is connected to the placing groove in a sliding mode; during operation, the base passes through the mount bolt fastening on the wall body, when installing the converter box, put into the standing groove with the box, then rotate the hand (hold), the hand (hold) rotates and drives first lead screw and rotates, first lead screw rotates and can drive a pair of movable block in opposite directions, let drive the fixed plate through the connecting rod and remove in opposite directions, fix the box of placing in the standing groove, and when the converter box breaks down and needs to be changed, only need to reverse the hand (hold) and remove the fixed of fixed plate, let the box can be quick install and change, and is simple and convenient.

Preferably, a ratchet wheel is fixedly connected to the center of the first lead screw, and a wedge-shaped rod is fixedly connected to the top end of the first cavity relative to the position of the ratchet wheel; a fifth groove is formed in the side wall of the base, a push plate is fixedly connected to the bottom of the fifth groove through a spring, and a push rod is fixedly connected to the side wall of the push plate; one end of the push rod extends into the first cavity, and the end part of the push rod is contacted with the wedge rod; during operation, in order to prevent that some external personnel from shaking the hand (hold) without authorization, influence the fixed effect of box, locate the rigid coupling at first lead screw center and have the ratchet, the ratchet is fixed through the wedge pole, promotes through the push rod to the wedge pole and removes when spacing to the ratchet, and the hand (hold) can not rotated by external personnel, plays the guard action to the fixed of box.

Preferably, sixth grooves are formed in the two sides of the box body, and the heat dissipation holes are cut off by the sixth grooves; a baffle is fixedly connected to the bottom of the sixth groove through a spring, and a group of first through holes are formed in the baffle; a seventh groove is formed in the bottom end of the box body, relative to the sixth groove, and the seventh groove is fixedly connected with a pressing plate through a spring; one end of the baffle extends into the seventh groove and is fixedly connected to the pressing plate; the during operation is placed in the standing groove at the box, and the clamp plate can get into in the seventh recess this moment, drives the baffle and removes in the sixth recess simultaneously, lets the first through-hole and the louvre of baffle communicate each other, and the louvre after the installation is in the open mode, can avoid when the box is not installed the transportation, and external environment is to the influence in the box.

The invention has the following beneficial effects:

1. according to the frequency converter box body assembly, in summer or under the condition that the external temperature is in a high state and the natural heat dissipation of a frequency converter box body cannot be performed quickly, the protective shell is connected into the first groove in a threaded mode, the motor is started to drive the first rotating shaft to rotate, the first rotating shaft can drive the fan blades to rotate, the fan blades can rotate, air enters the box body through the heat dissipation holes in the first groove in a blowing mode, then heat is taken away, and the heat is blown out of the heat dissipation holes in the bottom of the second groove, so that the temperature in the box body is kept; when winter or ambient temperature were lower, the natural heat dissipation of box just can satisfy box temperature requirement this moment, and the reverse protective housing takes off the protective housing from first recess this moment, lets the flabellum break away from first recess, avoids the flabellum to influence the natural heat dissipation function of box.

2. According to the frequency converter box body assembly, the base is fixed on a wall body through the fixing frame bolt, when the frequency converter box body is installed, the box body is placed into the placing groove, then the handle is rotated, the handle is rotated to drive the first lead screw to rotate, the first lead screw rotates to drive the pair of moving blocks to move in opposite directions, the connecting rod drives the fixing plates to move in opposite directions, the box body placed in the placing groove is fixed, and when the frequency converter box body breaks down and needs to be replaced, the fixing of the fixing plates is relieved by only reversing the handle, so that the box body can be installed and replaced quickly, and the frequency converter box body assembly is simple and convenient.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of a case;

FIG. 2 is a front view of the present invention;

FIG. 3 is an enlarged view of area A of FIG. 2;

FIG. 4 is an enlarged view of area B in FIG. 3;

FIG. 5 is an enlarged view of area C in FIG. 4;

FIG. 6 is a side view of the present invention;

FIG. 7 is a cross-sectional view of the fixation plate;

in the figure: 1. a box body; 11. a base; 12. a first groove; 13. a second groove; 14. heat dissipation holes; 15. a first filter screen; 16. a first annular groove; 17. a second filter screen; 18. a protective shell; 19. an electric motor; 191. a first rotating shaft; 192. a fan blade; 2. cleaning the board; 21. cleaning a brush; 22. a second rotating shaft; 23. a third groove; 24. a second annular groove; 25. a fixed block; 26. a fourth groove; 27. a bit block; 3. pressing a plate; 31. a baffle plate; 32. a first through hole; 4. a first cavity; 41. a first lead screw; 42. a fixing plate; 43. a moving block; 44. a ratchet wheel; 45. a wedge-shaped rod; 46. a push rod; 47. pushing the plate; 5. and (4) sucking discs.

Detailed Description

The present invention will be further described with reference to the following detailed description so that the technical means, the creation features, the achievement purposes and the effects of the present invention can be easily understood.

Example one

As shown in fig. 1 to 6, the case assembly of the frequency converter according to the present invention includes a case 1 and a base 11; a first groove 12 is formed in the side wall of one side of the box body 1, and a second groove 13 is formed in the side wall of the other side of the box body; the first groove 12 and the second groove 13 are the same in size; a group of heat dissipation holes 14 are formed in the bottoms of the first groove 12 and the second groove 13; a first annular groove 16 is formed in the side wall of the first groove 12, and a first filter screen 15 is rotatably connected in the first annular groove 16; a second filter screen 17 is fixedly connected to the side wall of the second groove 13; the inner wall of the first groove 12 is in threaded connection with a protective shell 18; the center of the protective shell 18 is fixedly connected with a motor 19, and the output end of the motor 19 is fixedly connected with a first rotating shaft 191; a set of fan blades 192 is fixedly connected to the shaft of the first rotating shaft 191 extending into the first groove 12; a group of through grooves are formed in the protective shell 18; the box body 1 is fixed on the base 11 through a fixing component; a group of fixing frames is fixedly connected to the base 11; when the frequency converter box body is in work, in the prior art, a fan is generally arranged for blowing and radiating, but in winter, the external temperature is low, the inside of the frequency converter box body 1 can quickly exchange heat energy with the outside for quick heat radiation, at the moment, the fan is not required to additionally provide heat radiation energy, but the fan can block the natural heat radiation of the heat radiation hole 14, therefore, when the frequency converter box body works, in summer or under the condition that the external temperature is in a high state and the natural heat radiation of the frequency converter box body 1 cannot quickly perform heat radiation, the protective shell 18 is in threaded connection with the first groove 12, the motor 19 is started to drive the first rotating shaft 191 to rotate, the first rotating shaft 191 rotates to drive the fan blade 192 to rotate, the fan blade 192 rotates to blow air into the box body 1 through the heat radiation hole 14 on the first groove 12 and then takes away the heat to blow out from the heat radiation hole 14 on the bottom of the second groove 13, and the temperature in the box body 1 is kept; in winter or when the external temperature is low, the natural heat dissipation of the box body 1 can meet the temperature requirement of the box body 1, the protective shell 18 is reversed, the protective shell 18 is taken down from the first groove 12, the fan blade 192 is separated from the first groove 12, and the fan blade 192 is prevented from influencing the natural heat dissipation function of the box body 1; be provided with first filter screen 15 and second filter screen 17 on first recess 12 and the second recess 13, when box 1 dispels the heat naturally, the inside steam of box 1 can flow to the external world through louvre 14 this moment, first filter screen 15 and second filter screen 17 can prevent some great impurity entering box 1 of external environment, when installation protecting crust 18 bloies the heat dissipation through flabellum 192, the first recess 12 of flabellum 192 department can absorb the external gas this moment, block some large-scale impurity through protecting crust 18, less impurity through first filter screen 15 filter screen entering gas, for example dust etc., can protect box 1 not receive the influence of external environment impurity.

A sweeping board 2 is fixedly connected to the side wall of the first groove 12, and a group of sweeping brushes 21 is fixedly connected to the sweeping board 2; the cleaning brush 21 and the first filter screen 15 are contacted with each other; a second rotating shaft 22 is fixedly connected to the center of the first filter screen 15, and the second rotating shaft 22 penetrates through the cleaning plate 2; the first rotating shaft 191 and the second rotating shaft 22 are connected through a clamping component; the during operation, when 18 threaded connection of protecting crust was on first recess 12, first axis of rotation 191 can pass through the screens subassembly with second axis of rotation 22 and connect this moment, flabellum 192 is bloied and can be driven external impurity and inhale in box 1 this moment, first filter screen 15 is in long-term filtration impurity, first filter screen 15 surface can be by impurity appearance depending on the jam, the event drives second axis of rotation 22 through first axis of rotation 191 and rotates, second axis of rotation 22 rotates and drives first filter screen 15 and rotate, it is fixed to clean board 2 this moment, first filter screen 15 rotates, can clean first filter screen 15 comprehensively through cleaning brush 21.

The blocking component comprises a third groove 23; the third groove 23 is formed in the end portion of the second rotating shaft 22, and a second annular groove 24 is formed in the side wall of the third groove 23; a pair of symmetrically distributed fixed blocks 25 is fixedly connected in the second annular groove 24; a pair of symmetrically distributed fourth grooves 26 are formed in the first rotating shaft 191, and a clamping block 27 is fixedly connected to the bottoms of the fourth grooves 26 through springs; in operation, when the protective shell 18 is screwed into the first groove 12, the first rotating shaft 191 extends into the third groove 23, and when the first rotating shaft 191 rotates, the position-locking block 27 in the fourth groove 26 extends into the second annular groove 24 under the action of centrifugal force, and then the second rotating shaft 22 rotates along with the first rotating shaft 191 due to the blocking of the fixing block 25.

The fixing assembly comprises a first cavity 4; a placing groove is formed in the base 11; a first cavity 4 is formed in the base 11; a first screw rod 41 is rotatably connected to the side wall of the first cavity 4, and a handle is fixedly connected to one end of the first screw rod 41, which extends out of the base 11; the threads on the first lead screw 41 are two opposite sections, and the first lead screw 41 is connected with a moving block 43 through a lead screw nut pair; a pair of first sliding grooves which are symmetrically distributed is formed between the first cavity 4 and the placing groove; a connecting rod is connected in the first sliding chute in a sliding manner, one end of the connecting rod is fixedly connected to the moving block 43, and the other end of the connecting rod is fixedly connected with the fixing plate 42; the fixing plate 42 is connected on the placing groove in a sliding way; during operation, base 11 passes through the mount bolt fastening on the wall body, when installing converter box 1, put into the standing groove with box 1, then rotate the hand (hold), the hand (hold) rotates and drives first lead screw 41 and rotates, first lead screw 41 rotates and can drive a pair of movable block 43 motion in opposite directions, let drive fixed plate 42 through the connecting rod and remove in opposite directions, fix the box 1 of placing in the standing groove, and when converter box 1 breaks down and needs to be changed, only need the hand (hold) that reverses to relieve the fixed of fixed plate 42, let box 1 can be quick can install and change, and is simple and convenient.

A ratchet 44 is fixedly connected to the center of the first lead screw 41, and a wedge-shaped rod 45 is fixedly connected to the top end of the first cavity 4 at a position corresponding to the ratchet 44; a fifth groove is formed in the side wall of the base 11, a push plate 47 is fixedly connected to the bottom of the fifth groove through a spring, and a push rod 46 is fixedly connected to the side wall of the push plate 47; one end of the push rod 46 extends into the first cavity 4, and the end part of the push rod 46 is contacted with the wedge rod 45; during operation, in order to prevent some external personnel from shaking the hand (hold) without permission, influence the fixed effect of box 1, locate the rigid coupling at first lead screw 41 center and have ratchet 44, ratchet 44 fixes through wedge pole 45, when not promoting to relieve ratchet 44 spacing through push rod 46 to wedge pole 45, the hand (hold) can not rotated by external personnel, plays the guard action to the fixed of box 1.

Sixth grooves are formed in two sides of the box body 1, and the heat dissipation holes 14 are cut off by the sixth grooves; a baffle plate 31 is fixedly connected to the bottom of the sixth groove through a spring, and a group of first through holes 32 are formed in the baffle plate 31; a seventh groove is formed in the bottom end of the box body 1 relative to the sixth groove, and the seventh groove is fixedly connected with a pressing plate 3 through a spring; one end of the baffle plate 31 extends into the seventh groove and is fixedly connected to the pressing plate 3; the during operation is placed in the standing groove at box 1, and in clamp plate 3 can get into the seventh recess this moment, drive baffle 31 and remove in the sixth recess simultaneously, let baffle 31's first through-hole 32 and louvre 14 communicate each other, and louvre 14 after the installation is in the open mode, can avoid when box 1 is not installed the transportation, external environment is to the influence in the box 1.

Example two

Referring to fig. 7, in a first comparative example, as another embodiment of the present invention, a set of suction cups 5 is fixed to opposite surfaces of a pair of fixing plates 42; during operation, the fixed plate 42 is fixedly connected with a group of suckers 5, the suckers 5 can be adsorbed on the side wall of the box body 1, and the fixing effect on the box body 1 can be further improved.

The working principle is as follows: in summer or under the condition that the external temperature is in a high state and the natural heat dissipation of the frequency converter box body 1 cannot be performed quickly, the protective shell 18 is connected into the first groove 12 in a threaded mode, the motor 19 is started to drive the first rotating shaft 191 to rotate, the first rotating shaft 191 rotates to drive the fan blades 192 to rotate, the fan blades 192 rotate to blow air into the box body 1 through the heat dissipation holes 14 in the first groove 12, then the heat is taken away, the air is blown out from the heat dissipation holes 14 in the bottom of the second groove 13, and the temperature in the box body 1 is kept; when the protective shell 18 is in threaded connection with the first groove 12, the first rotating shaft 191 extends into the third groove 23 at the moment, when the first rotating shaft 191 rotates, the clamping block 27 in the fourth groove 26 extends into the second annular groove 24 under the action of centrifugal force at the moment, then the second rotating shaft 22 rotates along with the first rotating shaft 191 due to the blocking of the fixing block 25, the first rotating shaft 191 drives the second rotating shaft 22 to rotate, the second rotating shaft 22 rotates to drive the first filter screen 15 to rotate, the cleaning plate 2 is fixed at the moment, the first filter screen 15 rotates, and the first filter screen 15 is cleaned comprehensively through the cleaning brush 21; in winter or when the external temperature is low, the natural heat dissipation of the box body 1 can meet the temperature requirement of the box body 1, the protective shell 18 is reversed, the protective shell 18 is taken down from the first groove 12, the fan blade 192 is separated from the first groove 12, and the fan blade 192 is prevented from influencing the natural heat dissipation function of the box body 1; the first groove 12 and the second groove 13 are provided with a first filter screen 15 and a second filter screen 17, when the box body 1 naturally radiates heat, hot air in the box body 1 can flow to the outside through the heat radiation holes 14, the first filter screen 15 and the second filter screen 17 can prevent some large impurities in the outside environment from entering the box body 1, when the protective shell 18 is installed and blown by the fan blades 192 for heat radiation, the first groove 12 at the fan blades 192 can absorb outside air at the moment, some large impurities are blocked by the protective shell 18, and small impurities such as dust and the like entering the air through the first filter screen 15 can protect the box body 1 from the influence of the impurities in the outside environment; when the frequency converter box body 1 is installed, the box body 1 is placed in the placing groove, then the handle is rotated, the handle rotates to drive the first lead screw 41 to rotate, the first lead screw 41 rotates to drive the pair of moving blocks 43 to move in opposite directions, the connecting rod drives the fixing plates 42 to move in opposite directions, the box body 1 placed in the placing groove is fixed, and when the frequency converter box body 1 breaks down and needs to be replaced, the fixing of the fixing plates 42 can be removed only by reversing the handle, so that the box body 1 can be installed and replaced quickly, and the frequency converter box body 1 is simple and convenient; in order to prevent some outside personnel from shaking the handle without permission and influencing the fixing effect of the box body 1, the ratchet wheel 44 is fixedly connected to the center of the first lead screw 41, the ratchet wheel 44 is fixed through the wedge-shaped rod 45, and when the wedge-shaped rod 45 is not pushed through the push rod 46 to remove the limit of the ratchet wheel 44, the handle cannot be rotated by the outside personnel, so that the fixing effect of the box body 1 is protected.

The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and so on.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a converter box subassembly which characterized in that: comprises a box body (1) and a base (11); a first groove (12) is formed in the side wall of one side of the box body (1), and a second groove (13) is formed in the side wall of the other side of the box body; the first groove (12) and the second groove (13) are the same in size; a group of heat dissipation holes (14) are formed in the bottoms of the first groove (12) and the second groove (13); a first annular groove (16) is formed in the side wall of the first groove (12), and a first filter screen (15) is rotatably connected in the first annular groove (16); a second filter screen (17) is fixedly connected to the side wall of the second groove (13); a protective shell (18) is connected to the inner wall of the first groove (12) in a threaded manner; the center of the protective shell (18) is fixedly connected with a motor (19), and the output end of the motor (19) is fixedly connected with a first rotating shaft (191); a group of fan blades (192) are fixedly connected to the shaft of the first rotating shaft (191) extending into the first groove (12); a group of through grooves are formed in the protective shell (18); the box body (1) is fixed on the base (11) through a fixing component; a group of fixing frames is fixedly connected to the base (11);

a sweeping board (2) is fixedly connected to the side wall of the first groove (12), and a group of sweeping brushes (21) is fixedly connected to the sweeping board (2); the cleaning brush (21) and the first filter screen (15) are contacted with each other; a second rotating shaft (22) is fixedly connected to the center of the first filter screen (15), and the second rotating shaft (22) penetrates through the cleaning plate (2); the first rotating shaft (191) is connected with the second rotating shaft (22) through a clamping component;

the clamping component comprises a third groove (23); the third groove (23) is formed in the end portion of the second rotating shaft (22), and a second annular groove (24) is formed in the side wall of the third groove (23); a pair of symmetrically distributed fixed blocks (25) is fixedly connected in the second annular groove (24); a pair of symmetrically distributed fourth grooves (26) is formed in the first rotating shaft (191), and clamping blocks (27) are fixedly connected to the bottoms of the fourth grooves (26) through springs;

the fixing assembly comprises a first cavity (4); a placing groove is formed in the base (11); a first cavity (4) is formed in the base (11); a first lead screw (41) is rotatably connected to the side wall of the first cavity (4), and a handle is fixedly connected to one end of the first lead screw (41) extending out of the base (11); the threads on the first lead screw (41) are two opposite sections, and the first lead screw (41) is connected with a moving block (43) through a lead screw nut pair; a pair of first sliding chutes which are symmetrically distributed is formed between the first cavity (4) and the placing groove; a connecting rod is connected in the first sliding chute in a sliding manner, one end of the connecting rod is fixedly connected to the moving block (43), and the other end of the connecting rod is fixedly connected with the fixing plate (42); the fixing plate (42) is connected to the placing groove in a sliding mode;

a ratchet wheel (44) is fixedly connected to the center of the first lead screw (41), and a wedge-shaped rod (45) is fixedly connected to the top end of the first cavity (4) relative to the position of the ratchet wheel (44); a fifth groove is formed in the side wall of the base (11), a push plate (47) is fixedly connected to the bottom of the fifth groove through a spring, and a push rod (46) is fixedly connected to the side wall of the push plate (47); one end of the push rod (46) extends into the first cavity (4), and the end part of the push rod (46) is contacted with the wedge-shaped rod (45);

sixth grooves are formed in the two sides of the box body (1) respectively, and the heat dissipation holes (14) are cut off by the sixth grooves; a baffle (31) is fixedly connected to the bottom of the sixth groove through a spring, and a group of first through holes (32) are formed in the baffle (31); a seventh groove is formed in the bottom end of the box body (1) relative to the sixth groove, and the seventh groove is fixedly connected with a pressing plate (3) through a spring; one end of the baffle plate (31) extends into the seventh groove and is fixedly connected to the pressing plate (3).