阅读说明：本技术 一种可扩大散热范围的配电柜及扩大散热的方法 (Power distribution cabinet capable of expanding heat dissipation range and method for expanding heat dissipation ) 是由 朱慧 于 2021-07-31 设计创作，主要内容包括：本发明公开了一种可扩大散热范围的配电柜及扩大散热的方法,包括配电柜本体,所述配电柜本体的右侧连通有梯形箱,所述梯形箱的顶部固定连接有电机,所述电机的底端贯穿至梯形箱的内部并固定连接有往复螺杆,所述往复螺杆的表面通过连接杆滑动连接有传动套。本发明由电机通过往复螺杆和传动套带动旋转套和安装套进行上下移动,增加轴流风机竖向的散热范围,再由往复螺杆和齿轮一通过齿轮二带动滑杆进行旋转,使滑杆带动旋转套以往复螺杆为中心进行往复摆动,从而具备了可扩大散热范围的优点,解决了现有的配电柜只通过单个固定的散热风扇进行散热,散热范围较小,影响散热效率,无法对不同位置进行有效散热的问题。(The invention discloses a power distribution cabinet capable of expanding a heat dissipation range and a heat dissipation expanding method. The motor drives the rotary sleeve and the mounting sleeve to move up and down through the reciprocating screw rod and the transmission sleeve, the vertical heat dissipation range of the axial flow fan is increased, the reciprocating screw rod and the gear I drive the sliding rod to rotate through the gear II, and the sliding rod drives the rotary sleeve to swing in a reciprocating mode by taking the reciprocating screw rod as the center, so that the axial flow fan has the advantage of being capable of expanding the heat dissipation range, and the problems that the existing power distribution cabinet only dissipates heat through a single fixed heat dissipation fan, the heat dissipation range is small, the heat dissipation efficiency is influenced, and effective heat dissipation cannot be conducted on different positions are solved.)

1. The utility model provides a can enlarge heat dissipation range's switch board, includes switch board body (1), its characterized in that: the power distribution cabinet is characterized in that the right side of the power distribution cabinet body (1) is communicated with a trapezoid box (2), the top of the trapezoid box (2) is fixedly connected with a motor (3), the bottom end of the motor (3) penetrates through the inside of the trapezoid box (2) and is fixedly connected with a reciprocating screw (4), the surface of the reciprocating screw (4) is connected with a transmission sleeve (5) in a sliding mode through a connecting rod, the surface of the transmission sleeve (5) is connected with a rotary sleeve (6) in a sliding mode, the left side of the rotary sleeve (6) is fixedly connected with an installation sleeve (7), the inside of the installation sleeve (7) is fixedly connected with an axial flow fan (8), the bottom end of the installation sleeve (7) is communicated with a corrugated pipe (9), one end, far away from the installation sleeve (7), of the corrugated pipe (9) penetrates through the outer side of the trapezoid box (2), and the top and the bottom of the surface of the reciprocating screw (4) are both fixedly connected with a first gear (10), the top of the inner wall of the trapezoid box (2) and the right side of the bottom of the trapezoid box are both movably connected with a second gear (11) meshed with the first gear (10) through a bearing, a sliding rod (12) is vertically and fixedly connected to the inner side of the second gear (11), and the rotary sleeve (6) is sleeved on the surface of the sliding rod (12) in a sliding mode.

2. The power distribution cabinet capable of expanding the heat dissipation range according to claim 1, wherein: the inner part of the trapezoidal box (2) is vertically and fixedly connected with a limiting rod (13), and the transmission sleeve (5) is sleeved on the surface of the limiting rod (13) in a sliding mode.

3. The power distribution cabinet capable of expanding the heat dissipation range according to claim 1, wherein: the top on trapezoidal case (2) right side is provided with filtering mechanism (14), filtering mechanism (14) are including filter sleeve (141), dehumidification cover (142) and wind speed sensor (143), filter sleeve (141) fixed connection is at the top on trapezoidal case (2) right side, dehumidification cover (142) fixed connection is in the inside of filter sleeve (141), the one end that installation cover (7) was kept away from in bellows (9) runs through the inside to filter sleeve (141), wind speed sensor (143) fixed connection is on the right side of bellows (9), the sense terminal of wind speed sensor (143) runs through the inside to bellows (9), the shape on filter sleeve (141) surface is circular.

4. The power distribution cabinet capable of expanding the heat dissipation range according to claim 3, wherein: the top of the output shaft of the motor (3) is provided with a cleaning mechanism (15), the cleaning mechanism (15) comprises a one-way bearing (151), a transmission helical gear (152), a driven helical gear (153), a cleaning brush strip (154) and an arc-shaped plate (155), the one-way bearing (151) is fixedly connected with the top of the output shaft of the motor (3), the transmission bevel gear (152) is fixedly connected to the surface of the one-way bearing (151), the driven bevel gear (153) is arranged at the right side of the filter sleeve (141), the transmission bevel gear (152) is meshed with the driven bevel gear (153), the cleaning brush strip (154) is fixedly connected to the left side of the driven bevel gear (153), the arc-shaped plates (155) are fixedly connected with the top and the right side of the trapezoidal box (2), the left side of the driven bevel gear (153) is movably connected with the surface of the arc-shaped plate (155) through a bearing.

5. The power distribution cabinet capable of expanding the heat dissipation range according to claim 1, wherein: the bottom on trapezoidal case (2) right side has clamp (16) through bolt fixed mounting, the surface at bellows (9) is established to clamp (16) cover, trapezoidal case (2) are made by transparent material.

6. The power distribution cabinet capable of expanding the heat dissipation range according to claim 4, wherein: the top fixedly connected with lag (17) of trapezoidal case (2), lag (17) cover is established on the surface of transmission helical gear (152).

7. The power distribution cabinet capable of expanding the heat dissipation range according to claim 4, wherein: the top fixedly connected with rubber circle (18) of lag (17) inner wall, the bottom of rubber circle (18) and the top contact of transmission helical gear (152), motor (3) are the biax motor, the bottom of reciprocal screw rod (4) is through the bottom swing joint of bearing and trapezoidal case (2) inner wall.

8. The method for expanding the heat dissipation of the power distribution cabinet with the expandable heat dissipation range according to claim 1, wherein the method comprises the following steps: the method comprises the following steps:

s1: a user firstly starts the motor (3) and the axial flow fan (8), the axial flow fan (8) injects outside air into the power distribution cabinet body (1) through the corrugated pipe (9), so that original air in the power distribution cabinet body (1) is discharged through a heat dissipation port arranged on the power distribution cabinet body, the motor (3) can drive the reciprocating screw (4) to rotate, the reciprocating screw (4) drives the transmission sleeve (5) to move up and down in a reciprocating manner, the transmission sleeve (5) drives the rotary sleeve (6) and the mounting sleeve (7) to move up and down, the vertical heat dissipation range of the axial flow fan (8) is increased, and then S2 is executed;

s2: the reciprocating screw rod (4) can drive the first gear (10) to rotate while rotating, the first gear (10) drives the sliding rod (12) to rotate through the second gear (11), and the sliding rod (12) and the second gear (11) are not concentric, so that the sliding rod can slide in the rotating sleeve (6) during rotation, and the rotating sleeve (6) is pushed at the same time, so that the rotating sleeve (6) can swing in a reciprocating mode around the reciprocating screw rod (4), the transverse heat dissipation range of the axial flow fan (8) is increased, and S3 is executed;

s3: when the heat dissipation needs to be carried out on the designated position, the motor (3) can be closed after the axial flow fan (8) is moved to a proper position, and the heat dissipation can be carried out on the designated position by the axial flow fan (8).

Technical Field

The invention relates to the technical field of power distribution cabinets, in particular to a power distribution cabinet capable of expanding a heat dissipation range and a heat dissipation expanding method.

Background

The power distribution cabinet and the lighting power distribution cabinet are power distribution system's final stage equipment, and the switch board is motor control center's general name, but current switch board only dispels the heat through single fixed radiator fan in the use, and the heat dissipation scope is less, influences the radiating efficiency, can't effectively dispel the heat to different positions.

Disclosure of Invention

In order to solve the problems in the background art, the invention aims to provide a power distribution cabinet capable of expanding a heat dissipation range and a method for expanding heat dissipation, which have the advantage of expanding the heat dissipation range and solve the problems that the existing power distribution cabinet only uses a single fixed heat dissipation fan to dissipate heat in the use process, the heat dissipation range is small, the heat dissipation efficiency is influenced, and effective heat dissipation cannot be performed on different positions.

In order to achieve the purpose, the invention provides the following technical scheme: a power distribution cabinet capable of expanding a heat dissipation range and a heat dissipation method comprise a power distribution cabinet body, wherein the right side of the power distribution cabinet body is communicated with a trapezoidal box, the top of the trapezoidal box is fixedly connected with a motor, the bottom end of the motor penetrates into the trapezoidal box and is fixedly connected with a reciprocating screw rod, the surface of the reciprocating screw rod is slidably connected with a transmission sleeve through a connecting rod, the surface of the transmission sleeve is slidably connected with a rotary sleeve, the left side of the rotary sleeve is fixedly connected with an installation sleeve, the inside of the installation sleeve is fixedly connected with an axial flow fan, the bottom end of the installation sleeve is communicated with a corrugated pipe, one end of the corrugated pipe, far away from the installation sleeve, penetrates to the outer side of the trapezoidal box, the top and the bottom of the surface of the reciprocating screw rod are fixedly connected with a first gear, and the right sides of the top and the bottom of the inner wall of the trapezoidal box are movably connected with a second gear meshed with the first gear through a bearing, the inner side of the second gear is vertically and fixedly connected with a sliding rod, and the rotating sleeve is sleeved on the surface of the sliding rod in a sliding mode.

Preferably, the inner part of the trapezoidal box is vertically and fixedly connected with a limiting rod, and the transmission sleeve is sleeved on the surface of the limiting rod in a sliding manner.

Preferably, the top of the right side of the trapezoid box is provided with a filtering mechanism, the filtering mechanism comprises a filtering sleeve, a dehumidifying sleeve and an air speed sensor, the filtering sleeve is fixedly connected to the top of the right side of the trapezoid box, the dehumidifying sleeve is fixedly connected to the inside of the filtering sleeve, one end, far away from the mounting sleeve, of the corrugated pipe penetrates into the filtering sleeve, the air speed sensor is fixedly connected to the right side of the corrugated pipe, the detection end of the air speed sensor penetrates into the corrugated pipe, and the surface of the filtering sleeve is circular.

Preferably, the top of the motor output shaft is provided with a cleaning mechanism, the cleaning mechanism comprises a one-way bearing, a transmission helical gear, a driven helical gear, a cleaning brush strip and an arc-shaped plate, the one-way bearing is fixedly connected to the top of the motor output shaft, the transmission helical gear is fixedly connected to the surface of the one-way bearing, the driven helical gear is arranged on the right side of the filter sleeve, the transmission helical gear is meshed with the driven helical gear, the cleaning brush strip is fixedly connected to the left side of the driven helical gear, the arc-shaped plate is fixedly connected to the top and the right side of the trapezoid box, and the left side of the driven helical gear is movably connected with the surface of the arc-shaped plate through a bearing.

Preferably, the clamp is fixedly installed at the bottom of the right side of the trapezoid box through a bolt, the clamp is sleeved on the surface of the corrugated pipe, and the trapezoid box is made of a transparent material.

Preferably, the top of the trapezoid box is fixedly connected with a protecting sleeve, and the protecting sleeve is sleeved on the surface of the transmission helical gear.

Preferably, the top of the inner wall of the protective sleeve is fixedly connected with a rubber ring, the bottom of the rubber ring is in contact with the top of the transmission helical gear, the motor is a double-shaft motor, and the bottom end of the reciprocating screw is movably connected with the bottom of the inner wall of the trapezoidal box through a bearing.

Preferably, the method comprises the following steps:

s1: a user firstly starts the motor and the axial flow fan, the axial flow fan injects outside air into the power distribution cabinet body through the corrugated pipe, so that original air in the power distribution cabinet body is discharged through a heat dissipation port arranged on the axial flow fan, the motor can drive the reciprocating screw rod to rotate, the reciprocating screw rod drives the transmission sleeve to do reciprocating movement up and down, the transmission sleeve drives the rotary sleeve and the installation sleeve to do up and down movement, the vertical heat dissipation range of the axial flow fan is increased, and then S2 is executed;

s2: the reciprocating screw rod can drive the first gear to rotate while rotating, the first gear drives the sliding rod to rotate through the second gear, and the sliding rod and the second gear are not concentric with each other, so that the sliding rod can slide in the rotary sleeve while rotating, and meanwhile, the rotary sleeve is pushed to reciprocate so that the rotary sleeve swings in a reciprocating mode with the reciprocating screw rod as the center, the transverse heat dissipation range of the axial flow fan is increased, and then S3 is executed;

s3: when the heat of the designated position is required to be dissipated, the motor can be closed after the axial flow fan moves to a proper position, and the axial flow fan can dissipate the heat of the designated position.

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

1. the motor drives the rotary sleeve and the mounting sleeve to move up and down through the reciprocating screw rod and the transmission sleeve, the vertical heat dissipation range of the axial flow fan is increased, the reciprocating screw rod and the gear I drive the sliding rod to rotate through the gear II, the sliding rod drives the rotary sleeve to swing in a reciprocating mode by taking the reciprocating screw rod as a center, the transverse heat dissipation range of the axial flow fan is increased, and meanwhile the axial flow fan can dissipate heat at a specified position, so that the axial flow fan has the advantage of enlarging the heat dissipation range, and the problems that the heat dissipation efficiency is influenced and effective heat dissipation cannot be performed at different positions due to the fact that only a single fixed heat dissipation fan dissipates heat in the using process of the conventional power distribution cabinet are solved.

2. The limiting rod is arranged, so that the transmission sleeve can be limited, the stability of the transmission sleeve during movement is improved, and the phenomenon that the transmission sleeve rotates during movement is avoided.

3. According to the invention, the filtering mechanism is arranged, so that air entering the corrugated pipe can be filtered and dehumidified, and the phenomenon that dust easily enters the power distribution cabinet body is avoided.

4. By arranging the cleaning mechanism, the filter sleeve can be conveniently cleaned by a user, and the phenomenon that the user needs to clean the surface of the filter sleeve firstly and wastes more time is avoided.

5. According to the corrugated pipe fixing device, the clamp is arranged, so that the corrugated pipe can be fixed in position, and the stability of the corrugated pipe is improved.

6. According to the invention, the surface of the transmission bevel gear can be protected by arranging the protective sleeve, so that the service life of the transmission bevel gear is prolonged.

7. According to the invention, the rubber ring is arranged, so that the friction force between the transmission helical gear and the protective sleeve can be increased, and the phenomenon that the transmission helical gear rotates when the transmission helical gear does not need to rotate is avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 1;

FIG. 4 is an enlarged view of the structure of FIG. 1 at C according to the present invention;

FIG. 5 is a left side sectional view of an arcuate plate of the present invention;

fig. 6 is a perspective view of the rotating sleeve of the present invention.

In the figure: 1. a power distribution cabinet body; 2. a ladder box; 3. a motor; 4. a reciprocating screw; 5. a transmission sleeve; 6. a rotating sleeve; 7. installing a sleeve; 8. an axial flow fan; 9. a bellows; 10. a first gear; 11. a second gear; 12. a slide bar; 13. a limiting rod; 14. a filtering mechanism; 141. a filter sleeve; 142. a dehumidifying sleeve; 143. a wind speed sensor; 15. a cleaning mechanism; 151. a one-way bearing; 152. a transmission bevel gear; 153. a driven helical gear; 154. cleaning the brush bar; 155. an arc-shaped plate; 16. clamping a hoop; 17. a protective sleeve; 18. a rubber ring.

Detailed Description

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

As shown in figures 1 to 6, the power distribution cabinet capable of expanding the heat dissipation range and the method for expanding the heat dissipation provided by the invention comprise a power distribution cabinet body 1, wherein the right side of the power distribution cabinet body 1 is communicated with a trapezoid box 2, the top of the trapezoid box 2 is fixedly connected with a motor 3, the bottom end of the motor 3 penetrates into the trapezoid box 2 and is fixedly connected with a reciprocating screw 4, the surface of the reciprocating screw 4 is slidably connected with a transmission sleeve 5 through a connecting rod, the surface of the transmission sleeve 5 is slidably connected with a rotary sleeve 6, the left side of the rotary sleeve 6 is fixedly connected with a mounting sleeve 7, the inside of the mounting sleeve 7 is fixedly connected with an axial flow fan 8, the bottom end of the mounting sleeve 7 is communicated with a corrugated pipe 9, one end of the corrugated pipe 9, which is far away from the mounting sleeve 7, penetrates to the outer side of the trapezoid box 2, the top and the bottom of the surface of the reciprocating screw 4 are fixedly connected with a first gear 10, and the right sides of the top and the bottom of the inner wall of the trapezoid box 2 are movably connected with a second gear 11 meshed with the first gear 10 through a bearing, a sliding rod 12 is vertically and fixedly connected to the inner side of the second gear 11, and the rotating sleeve 6 is sleeved on the surface of the sliding rod 12 in a sliding mode.

Referring to fig. 1, a limiting rod 13 is vertically and fixedly connected inside the trapezoid box 2, and the transmission sleeve 5 is slidably sleeved on the surface of the limiting rod 13.

As a technical optimization scheme of the invention, the limiting rod 13 is arranged to limit the transmission sleeve 5, so that the stability of the transmission sleeve 5 during movement is improved, and the phenomenon that the transmission sleeve 5 rotates during movement is avoided.

Referring to fig. 3, the filtering mechanism 14 is disposed on the top of the right side of the trapezoidal box 2, the filtering mechanism 14 includes a filtering sleeve 141, a dehumidifying sleeve 142 and an air velocity sensor 143, the filtering sleeve 141 is fixedly connected to the top of the right side of the trapezoidal box 2, the dehumidifying sleeve 142 is fixedly connected to the inside of the filtering sleeve 141, one end of the corrugated pipe 9, which is far away from the mounting sleeve 7, penetrates through the inside of the filtering sleeve 141, the air velocity sensor 143 is fixedly connected to the right side of the corrugated pipe 9, the detection end of the air velocity sensor 143 penetrates through the inside of the corrugated pipe 9, and the shape of the surface of the filtering sleeve 141 is circular.

As a technical optimization scheme of the invention, the air entering the corrugated pipe 9 can be filtered and dehumidified by arranging the filtering mechanism 14, so that the phenomenon that dust easily enters the power distribution cabinet body 1 is avoided.

Referring to fig. 3, the top of the output shaft of the motor 3 is provided with a cleaning mechanism 15, the cleaning mechanism 15 includes a one-way bearing 151, a transmission helical gear 152, a driven helical gear 153, a cleaning brush strip 154 and an arc-shaped plate 155, the one-way bearing 151 is fixedly connected to the top of the output shaft of the motor 3, the transmission helical gear 152 is fixedly connected to the surface of the one-way bearing 151, the driven helical gear 153 is arranged on the right side of the filter sleeve 141, the transmission helical gear 152 is engaged with the driven helical gear 153, the cleaning brush strip 154 is fixedly connected to the left side of the driven helical gear 153, the arc-shaped plate 155 is fixedly connected to the top and the right side of the trapezoidal box 2, and the left side of the driven helical gear 153 is movably connected to the surface of the arc-shaped plate 155 through a bearing.

As a technical optimization scheme of the invention, the cleaning mechanism 15 is arranged, so that the filter sleeve 141 can be conveniently cleaned by a user, and the phenomenon that the user needs to clean the surface of the filter sleeve 141 firstly and much time is wasted is avoided.

Referring to fig. 2, a clamp 16 is fixedly mounted at the bottom of the right side of the trapezoid case 2 through a bolt, the clamp 16 is sleeved on the surface of the corrugated pipe 9, and the trapezoid case 2 is made of a transparent material.

As a technical optimization scheme of the invention, the corrugated pipe 9 can be fixed in position by arranging the clamp 16, so that the stability of the corrugated pipe 9 is improved.

Referring to fig. 4, a protecting sleeve 17 is fixedly connected to the top of the trapezoidal box 2, and the protecting sleeve 17 is sleeved on the surface of the transmission helical gear 152.

As a technical optimization scheme of the invention, the surface of the transmission bevel gear 152 can be protected by arranging the protective sleeve 17, so that the service life of the transmission bevel gear 152 is prolonged.

Referring to fig. 4, the top of the inner wall of the protecting jacket 17 is fixedly connected with a rubber ring 18, the bottom of the rubber ring 18 contacts with the top of the transmission helical gear 152, the motor 3 is a dual-shaft motor, and the bottom end of the reciprocating screw 4 is movably connected with the bottom of the inner wall of the trapezoidal box 2 through a bearing.

As a technical optimization scheme of the invention, the rubber ring 18 is arranged, so that the friction force between the transmission helical gear 152 and the protective sleeve 17 can be increased, and the phenomenon that the transmission helical gear 152 rotates when the transmission helical gear 152 does not need to rotate is avoided.

Referring to fig. 1 to 6, the method includes the following steps:

s1: a user firstly starts the motor 3 and the axial flow fan 8, the axial flow fan 8 injects outside air into the power distribution cabinet body 1 through the corrugated pipe 9, so that original air in the power distribution cabinet body 1 is discharged through a heat dissipation port, the motor 3 can drive the reciprocating screw rod 4 to rotate, the reciprocating screw rod 4 drives the transmission sleeve 5 to reciprocate up and down, the transmission sleeve 5 drives the rotary sleeve 6 and the mounting sleeve 7 to move up and down, the vertical heat dissipation range of the axial flow fan 8 is increased, and then S2 is executed;

s2: the reciprocating screw 4 can drive the first gear 10 to rotate while rotating, the first gear 10 drives the sliding rod 12 to rotate through the second gear 11, and the sliding rod 12 and the second gear 11 are not concentric, so that the sliding rod can slide in the rotating sleeve 6 while rotating, and meanwhile, the rotating sleeve 6 is pushed, so that the rotating sleeve 6 can swing back and forth around the reciprocating screw 4, the transverse heat dissipation range of the axial flow fan 8 is increased, and then S3 is executed;

s3: when the assigned position is required to be radiated, the motor 3 can be closed after the axial flow fan 8 moves to a proper position, and the axial flow fan 8 can radiate the assigned position.

The working principle and the using process of the invention are as follows: when the power distribution cabinet is used, a user firstly starts the motor 3 and the axial flow fan 8, the output shaft of the motor 3 rotates forwards and cannot drive the one-way bearing 151 to rotate, the axial flow fan 8 injects outside air into the power distribution cabinet body 1 through the corrugated pipe 9, so that original air in the power distribution cabinet body 1 is exhausted through a heat dissipation port arranged on the motor, the motor 3 can drive the reciprocating screw rod 4 to rotate, the reciprocating screw rod 4 drives the transmission sleeve 5 to reciprocate up and down, the transmission sleeve 5 drives the rotary sleeve 6 and the mounting sleeve 7 to move up and down, the vertical heat dissipation range of the axial flow fan 8 is increased, the reciprocating screw rod 4 can drive the gear I10 to rotate while rotating, the gear I10 drives the slide rod 12 to rotate through the gear II 11, the slide rod 12 and the gear II 11 are not concentric with each other, so that the rotary sleeve can slide in the rotary sleeve 6 when rotating, meanwhile, the rotary sleeve 6 is pushed, and the rotary sleeve 6 can swing back and forth around the reciprocating screw rod 4, increase the horizontal heat dissipation scope of axial fan 8, when needing to dispel the heat to the assigned position, can remove to suitable position after axial fan 8, close motor 3, axial fan 8 then can dispel the heat to the assigned position, can filter and dehumidify the gas that gets into bellows 9 when filter sleeve 141 and dehumidification cover 142, and simultaneously wind speed sensor 143 can detect the inside wind speed of bellows 9, when the wind speed is lower needs to clean filter sleeve 141, start motor 3, motor 3 output shaft antiport can drive one-way bearing 151 and rotate, one-way bearing 151 drives clean brush strip 154 through transmission helical gear 152 and driven helical gear 153 and brushes the dust on filter sleeve 141 surface, thereby reach the effect that can enlarge the heat dissipation scope.

In summary, the following steps: the power distribution cabinet capable of expanding the heat dissipation range and the heat dissipation method are characterized in that a motor 3 drives a rotary sleeve 6 and an installation sleeve 7 to move up and down through a reciprocating screw rod 4 and a transmission sleeve 5, the vertical heat dissipation range of an axial flow fan 8 is increased, then a reciprocating screw rod 4 and a gear I10 drive a slide rod 12 to rotate through a gear II 11, the slide rod 12 drives the rotary sleeve 6 to swing back and forth with the reciprocating screw rod 4 as the center, the transverse heat dissipation range of the axial flow fan 8 is increased, meanwhile, the axial flow fan 8 can dissipate heat at a specified position, the advantage of expanding the heat dissipation range is achieved, and the problems that the heat dissipation is only performed through a single fixed heat dissipation fan in the using process of the existing power distribution cabinet, the heat dissipation range is small, the heat dissipation efficiency is influenced, and effective heat dissipation cannot be performed at different positions are solved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.