CN216391880U

CN216391880U - Protective structure and electrical equipment

Info

Publication number: CN216391880U
Application number: CN202122666418.4U
Authority: CN
Inventors: 夏冬; 刘其猛; 秦井武; 贺超
Original assignee: Jiangsu Jingwei Rail Traffic Equipment Co ltd
Current assignee: Jiangsu Jingwei Rail Traffic Equipment Co ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-04-26
Anticipated expiration: 2031-11-02

Abstract

The utility model discloses a protective structure and electrical equipment applying the same. The protective structure comprises a base and an outer cover, wherein the base is used for fixing the radiator; the outer cover is fixed on the base and encloses with the base to form a protective space, the protective space is used for accommodating the radiator, and the protective space is provided with an air inlet side and an air outlet side which are communicated with the outside. The technical scheme of the utility model can improve the maintenance convenience of the external radiator.

Description

Protective structure and electrical equipment

Technical Field

The utility model relates to the technical field of rail transit electrical equipment, in particular to a protective structure and electrical equipment applying the protective structure.

Background

In the electrical equipment of the rail transit traction system, heat dissipation of heating elements such as a power module and the like needs to be carried away by an aluminum alloy radiator. Existing electrical devices often leak heat sinks to the outside environment. At this time, since the radiator is exposed to the external environment, seasonal lint and dust may adhere to the radiator, so that it is inconvenient to maintain the radiator.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a protective structure and electrical equipment applying the same, and aims to improve the maintenance convenience of an external radiator.

In order to achieve the above object, the present invention provides a protection structure comprising:

the base is used for fixing the radiator; and

the outer cover is fixed on the base and forms a protective space by enclosing the base, the protective space is used for accommodating the radiator, and the protective space is provided with an air inlet side and an air outlet side which are communicated with the outside.

Optionally, the outer cover comprises a substrate and surrounding plates arranged around the substrate, the surrounding plates and the substrate surround to form a cavity, and the cavity is covered on the base to form the protection space;

the air inlet side and the air outlet side are both arranged on the coaming; or the air inlet side is arranged on the base plate, and the air outlet side is arranged on the coaming; or the air inlet side is arranged on the coaming, and the air outlet side is arranged on the substrate.

Optionally, the base plate is provided with a plurality of air holes distributed in an array, and the surrounding plate is provided with a plurality of air holes distributed in an array.

Optionally, one end of the enclosing plate, which faces away from the base plate, is bent outwards to form a connecting plate, and the connecting plate is fixed to the base.

Optionally, the protective structure further includes a sealing member fixed to a surface of the base facing away from the outer cover, and disposed around an outer edge of the base.

Optionally, the sealing member includes the backing plate, the backing plate is fixed in the base is in the back of the surface of dustcoat, the fretwork region has been seted up to the backing plate for dodge the power module of being connected with the radiator, the sealing member still includes the sealing strip, the sealing strip subsides are located the backing plate is in the back of the surface of dustcoat, and encircle the setting all around of fretwork region.

Optionally, the surface of the housing is provided with a handle.

Optionally, the base is further provided with a grounding column in a protruding manner, and the grounding column is used for grounding.

The utility model also provides electrical equipment, which comprises a box body and a protective structure, wherein the protective structure comprises a base and an outer cover, and the base is used for fixing the radiator; the outer cover is fixed on the base, and is enclosed to form a protective space with the base, the protective space is used for accommodating the radiator, the protective space is provided with an air inlet side and an air outlet side which are communicated with the outside, and the protective structure is fixed on the outer side surface of the box body through the base.

Optionally, a fixing groove is concavely formed in one side surface of the box body, and the base is fixed to a bottom wall of the fixing groove.

The utility model provides a protective structure which comprises a base and an outer cover, wherein a radiator is fixed on the base, the outer cover covers the radiator to form a protective space, the protective space is provided with an air inlet side and an air outlet side which are communicated with the outside, cold air enters from the air inlet side, and heat emitted by the radiator is taken away from the air outlet side. When the radiator is arranged in the protection space, the structure that the existing external radiator is completely exposed to the external environment of the electrical equipment is replaced, and due to the protection effect of the protection space, part of seasonal batting and flying dust are separated, so that the influence of the seasonal batting and the flying dust on the radiator is reduced, and the maintenance convenience of the external radiator is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is an exploded view of one embodiment of the protective structure of the present invention;

FIG. 2 is a general schematic view of the containment structure of FIG. 1;

FIG. 3 is a schematic view of the protective structure of FIG. 1 from another perspective;

FIG. 4 is an exploded view of the shield structure of FIG. 1 from another perspective;

figure 5 is a cut-away schematic view of the shielding structure of figure 1.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Electrical device	151	Backing plate
10	Protective structure	153	Sealing strip
				11	Base seat	30	Box body
111	Grounding pole	31	Fixing groove
				13	Outer cover	50	Fixing structure
131	Substrate	51	Locating pin
				133	Protective space	53	Fastening bolt
135	Boarding board	55	Fastening nut
				1351	Air hole	56	Pressure riveting screw
1353	Connecting plate	58	Countersunk rivet
				1353a	Avoiding hole	70	Heat radiator
137	Handle bar	90	Grounding wire
				15	Sealing element

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

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.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 to 3, in an embodiment of the protection structure 10 according to the present invention, the protection structure 10 is used for protecting a heat sink 70 of an electrical device 100 in a track traction system, the protection structure 10 includes a base 11 and a cover 13, the base 11 is used for fixing the heat sink 70; the outer cover 13, the outer cover 13 is fixed in the base 11, and form the guard space 133 with the base 11 enclosure, the guard space 133 is used for accommodating the radiator 70, the guard space 133 has an air inlet side (not marked) and an air outlet side (not marked) which are communicated with the outside.

Wherein, the base 11 can be very ordinary straight plate-shaped structure, and radiator 70 fixes on base 11, and simultaneously, heating element such as power module connects in radiator 70, consequently, base 11 need reserve the position of wearing to establish of heating element, and further, radiator 70 can be aluminium alloy material, and the air-in side can all set up on dustcoat 13 with the air-out side to form the wind channel, thereby utilize the wind channel to take away the heat that radiator 70 gived off.

It can be understood that the air inlet side and the air outlet side in the embodiment of the present invention are generally referred to according to the air flowing direction, and are not particularly referred to. That is, the side where air flows into the protection space 133 is an air intake side, and the side where air flows out of the protection space 133 is an air outlet side. The air inlet side and the air outlet side can also change along with the change of the wind direction. For example, in one embodiment, the air inlet side may be disposed on the base 131 and the air outlet side disposed on the shroud 135; or the air inlet side and the air outlet side are both arranged on the coaming 135; alternatively, the air inlet side is provided on the shroud 135 and the air outlet side is provided on the base 131. The air inlet side and the air outlet side are formed according to the wind direction, and heat exchange in the protection space 133 can be effectively promoted to improve the heat dissipation efficiency.

The heat sink 70 cooperates with the base 11 with a sealing design, which may be conventional and therefore will not be described here. Still further, the cover 13 may cover the heat sink 70, and the structure shape may be various, specifically, the protection space 133 enclosed by the cover 13 and the base 11 is larger than the volume of the heat sink 70, that is, the heat sink 70 and the cover 13 are in non-interference connection.

The external heat sink 70 belongs to one of the walking air-cooling heat dissipation manners, and for the walking air-cooling heat dissipation, a manner of an internal air duct is also included, which means that a ventilation air duct is designed inside the device, and the fins of the heat sink 70 are placed in the air duct. In the design of the shape-walking air cooling of the built-in air duct, the air inlet needs to be arranged in the advancing direction of a train, namely the side surface of equipment. However, the air duct design cannot achieve an upper and lower straight air duct, seasonal lint and dust exist when the vehicle runs, and at this time, an iron wire net needs to be arranged at the air inlet and outlet of the box body 30, but the requirement for the maintenance period of cleaning the radiator 70 and the air duct opening is frequent.

The utility model can solve the problem of protecting the fins of the external radiator 70 and the problem of sealing the installation structure of the radiator 70, and provides the protecting and fixing structure 50 of the external radiator 70, which is reliable, economical and convenient to maintain. Further, this application adopts power module and radiator 70 modularized design, realizes the whole dismouting of pre-assembling, makes radiator 70 maintainability higher.

In general, the outer cover 13 can be understood as a shell, an air inlet side and an air outlet side are arranged on the shell, because the outer cover 13 is always a shell, even if the air inlet side and the air outlet side are large openings, at least a part of lint or dust can be prevented from entering, the exposure of the radiator 70 is not so large, the probability that the lint or the dust is attached to the radiator 70 is reduced, the difficulty of maintenance is reduced, the frequency of maintenance required by the radiator 70 is reduced because the probability attached to the lint or the dust is reduced, and the convenience of maintenance is correspondingly improved.

The utility model provides a protective structure 10, which comprises a base 11 and an outer cover 13, wherein a radiator 70 is fixed on the base 11, the outer cover 13 covers the radiator 70 to form a protective space 133, the protective space 133 is provided with an air inlet side and an air outlet side which are communicated with the outside, cold air enters from the air inlet side, and heat emitted by the radiator 70 is taken away from the air outlet side. It can be understood that, when the heat sink 70 is disposed in the protection space 133, the external heat sink 70 replaces the existing structure in which the external heat sink 70 is completely exposed to the external environment of the electrical device 100, and due to the protection effect of the protection space 133, part of seasonal lint and flying dust is blocked, so that the influence of the seasonal lint and flying dust on the heat sink 70 is reduced, and the maintenance convenience of the external heat sink 70 is improved.

Referring to fig. 2, in an embodiment of the protection structure 10 according to the present invention, the outer cover 13 includes a base plate 131 and a surrounding plate 135 surrounding the base plate 131, the surrounding plate 135 and the base plate 131 form a cavity, and the cavity is covered on the base 11 to form a protection space 133;

the air inlet side and the air outlet side are both arranged on the coaming 135; or the air inlet side is arranged on the base plate 131, and the air outlet side is arranged on the coaming 135; alternatively, the air inlet side is provided on the shroud 135 and the air outlet side is provided on the base 131.

Wherein, three ways of arranging the air inlet side and the air outlet side are given above, when the protective structure 10 is arranged on the side of the train advancing direction, it is preferable that the air inlet side and the air outlet side are both arranged on the coaming 135 or the air inlet side is arranged on the coaming 135 and the air outlet side is arranged on the base plate 131; when the protective structure 10 is disposed on the front side of the train traveling direction, it may be preferable that the air intake side is disposed on the base plate 131 and the air outlet side is disposed on the coaming 135.

It will be appreciated that providing an air inlet side and an air outlet side on the housing 13 facilitates the formation of an air duct to carry away the emissions from the heat sink 70.

Referring to fig. 1 to fig. 3, in an embodiment of the protection structure 10 according to the present invention, the substrate 131 is provided with a plurality of air holes 1351 distributed in an array, and the surrounding plate 135 is provided with a plurality of air holes 1351 distributed in an array.

The air holes 1351 distributed in an array may be various, and in this embodiment, the substrate 131 is provided with 20 × 4 air holes 1351 distributed in an array. Further, the embodiment integrates the three types of the positions of the air inlet side and the air outlet side, so that the design has a good heat dissipation effect no matter which part of the train the protection structure 10 is arranged at. Still further, the air holes 1351 are elongated strip-shaped holes, specifically, the length of the air holes 1351 is 29mm, the width thereof is 4mm, and the diameter of the air holes 1351 is a size which is superior for blocking seasonal lint and dust, so that the blocking effect is poor due to too large air holes, and the heat dissipation effect is affected due to too small air holes.

It should be noted that the holes may be designed to make the lint or the dust difficult to enter, or some protective net may be added inside the outer cover 13, or some protective net may be added outside the outer cover 13, so that the lint or the dust cannot enter the outer cover 13. In this case, when the radiator 70 needs to be cleaned, the protective net is detached and the net is cleaned. Further, the protective net may be a filter net or a dust screen, which is known in the art.

Since the outer cover 13 is also in a high temperature state after covering the heat sink 70, a high temperature notice board may be provided on the outer cover 13. Meanwhile, since the fins of the heat sink 70 are sharp and in a high temperature state, the protection safety of the external heat sink 70 can be improved by providing the outer cover 13.

In general, the heat sink 70 is protected by the cover 13 with holes, the cover 13 and the base 11 are detachable, and the cover 13 is detached from the base 11 without interfering with the base 11. Daily cleaning of the fins of the heat sink 70 can be achieved by independently removing the outer cover 13. During production and assembly, parts of the protective structure 10 can be assembled firstly, modular assembly is achieved, and the modular design is good in operability and maintainability.

Referring to fig. 3, in an embodiment of the protection structure 10 of the present invention, an end of the enclosing plate 135 away from the base plate 131 is bent outward to form a connecting plate 1353, and the connecting plate 1353 is fixed to the base 11.

Wherein, can be fixed in the connecting plate 1353 in base 11 through bolt and nut, perhaps adopt the mode of joint, adopt the post of pegging graft to be fixed in the connecting plate 1353 in base 11, understandably, adopt bolt and nut to fix dustcoat 13 on base 11 and have advantages such as simple structure, simple to operate, assembly swiftly. Meanwhile, since the protective structure 10 may need many bolts and screws for fastening to the box body 30, it is highly required to fit the holes of the base 11 and the box body 30, and at this time, the positioning pin 51 is needed to ensure the accuracy of the alignment of the holes of the base 11 and the box body 30. Further, the positioning pin 51 can effectively prevent the dead, that is, the correct installation position of the installer can be reminded, so that the installation is not mistaken or reversed.

In a popular way, the radiator 70 is fastened on the base 11 through bolts, then fastened on an outer frame metal plate of the box body 30 through fastening bolts 53, and positioning is realized through riveting positioning pins 51 on the outer frame metal plate; the cover 13 of the heat sink 70 is fastened to the mounting base 11 of the heat sink 70 by nuts.

Referring to fig. 4, in an embodiment of the protection structure 10 according to the present invention, the protection structure 10 further includes a sealing member 15, and the sealing member 15 is fixed on a surface of the base 11 opposite to the outer cover 13 and is disposed around an outer edge of the base 11.

In the case where the protective structure 10 is to be fixed to the electrical equipment 100, if the protective structure 10 is directly fixed to the box 30 of the electrical equipment 100 by bolts and screws, there may be a gap between the mating surfaces of the base 11 and the box 30, and dust and rain water may enter the box 30 through the gap. Further, the seal 15 may have a variety of configurations, and in addition to the configurations described hereinafter, at least one of: a protective coating or film may be applied to the gap or mating surface of the base 11 and the case 30.

It can be understood that the sealing member 15 is disposed on the matching surface between the box 30 and the base 11, so as to effectively reduce the possibility of dust and rain entering the inside of the box 30, and further protect the components inside the box 30.

Referring to fig. 4, in an embodiment of the protection structure 10 according to the present invention, the sealing element 15 includes a pad 151, the pad 151 is fixed on a surface of the base 11 opposite to the outer cover 13, the pad 151 is provided with a hollow area for avoiding the power module connected to the heat sink 70, the sealing element 15 further includes a sealing strip 153, and the sealing strip 153 is attached to a surface of the pad 151 opposite to the outer cover 13 and disposed around the hollow area.

Wherein, power module wears to locate this fretwork area back, is connected with the inner space of box 30, and the sealing strip can be understood as an elastic rubber, and further, sealing strip 153 can be wave sealing strip 153, and the thickness of sealing strip 153 is greater than the thickness of gasket, through compressing sealing strip 153, thereby live the clearance closure.

It can be understood that the sealing strip 153 is a mature product in the market, and the sealing strip 153 is arranged on the matching surface of the base 11 and the box body 30, so that the sealing strip has the advantages of simple structure, convenience in installation and the like, and the possibility of dust and rainwater entering the interior of the box body 30 can be effectively reduced.

In general terms, the external heat sink 70 is sealed by adhering a wave-shaped sealing strip 153 to the inside of the backing plate 151 of the sealing strip 153 and compressing it. The sealing member 15 may be riveted to the base 11 by a countersunk rivet 58, and the power module and the heat sink 70 may be fastened to the heat sink 70 mounting base 11 by fastening bolts 53.

Referring to fig. 1 and 2, in an embodiment of the protection structure 10 of the present invention, a handle 137 is disposed on a surface of the outer cover 13.

Wherein, the handle 137 can be arranged on the coaming 135 and is oppositely arranged on the coaming 135, understandably, the arrangement of the handle 137 is beneficial to the disassembly of the outer cover 13, and the outer cover 13 is held, so that the direct contact with the ultrahigh-temperature outer cover 13 body is avoided. Further, the handle 137 may be made of a heat insulating material, and the handle 137 may be fixed to the cover 13 by welding.

Referring to fig. 1, in an embodiment of the protection structure 10 of the present invention, the base 11 is further provided with a grounding pillar 111, and the grounding pillar 111 is used for grounding.

Wherein, can carry out a earth connection 90 alone, with base 11 ground connection, also can use earth connection 90 to connect base 11 and the box 30 described below to let base 11 and box 30 realize the equipotential, prevent electrified, the people brings danger when touching. Furthermore, the box 30 is also provided with a grounding post, and two grounding wires are inserted into the two grounding posts.

It is understood that since the heat generating component such as the power module is connected to the heat sink 70 and the heat sink 70 is connected to the base 11, when the power module is operated, there is a possibility that electric leakage may occur, and at this time, it is necessary to conduct electricity, and therefore, the ground wire 90 may be connected to the ground post 111 and the case 30, and the case 30 is grounded, so that electric conduction may be conducted. The ground wire 90 may be a kind of wire.

Referring to fig. 2, the present invention further provides an electrical apparatus 100, which includes the protection structure 10. Since the electrical device 100 adopts all technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here. Illustratively, the shielding structure 10 is fixed to the outer side surface of the box 30 by its base 11.

Referring to fig. 5, in an embodiment of the protection structure 10 of the present invention, a fixing groove 31 is concavely formed on a side surface of the box 30, and the base 11 is fixed to a bottom wall of the fixing groove 31.

The case 30 is concavely provided with a fixing groove 31, that is, the case 30 has an embedded structure, and the base 11 is integrally embedded in the fixing groove 31, so that the embedded structure can realize a better IP protection function. Further, the backing plate 151 and the sealing strip 153 form a sealing member 15, one surface of the sealing member 15 abuts against the base 11, and the other surface of the sealing member 15 abuts against the bottom wall of the fixing groove 31, and further, the base 11, the sealing strip 153, and the bottom wall of the fixing groove 31 are all provided with through holes, the heat sink 70 is fixed to the base 11, the heat sink 70 is connected with a heating element such as a power module, and the heating element is connected with the inside of the case 30 after being inserted into the through holes. The opening size of the through hole is adapted to the heat generating element, and in the present embodiment, the through hole is in the shape of a "square" and the sealing tape 153 may be enclosed in the shape of a "square". It will be appreciated that the through-openings of square shape facilitate the manufacturing of the box 30, the sealing strip 153 and the base 11. It should be noted that the base 11, the box body 30 and the backing plate 151 may be a sheet metal part, that is, a metal sheet formed by a comprehensive cold working process, including shearing, punching/cutting/combining, folding, riveting, splicing, forming, etc., and the sheet metal part has the characteristics of light weight, high strength, conductivity (capable of being used for electromagnetic shielding), low cost, good large-scale mass production performance, etc.

Referring to fig. 3, in an embodiment of the protection structure 10 of the present invention, the connection plate 1353 further has an avoiding hole facing outward away from the cavity, and the housing 13 avoids the fastening bolts 53 and the positioning pins 51 at the avoiding hole.

It will be appreciated that, since there are a large number of fastening bolts 53 and positioning pins 51 protruding from the outer surface of the base 11, in order to make the protective structure 10 more compact, it is necessary to provide relief holes in the outer cover 13 to avoid the fastening bolts 53 and positioning pins 51. Meanwhile, the arrangement of the avoiding hole avoiding fixing piece enables the structure of the electrical equipment 100 to be simpler and more compact, and the appearance is more attractive.

In general, the cover 13 of the heat sink 70 is provided with an avoiding hole structure to avoid the fastening bolt 53 and the rivet of the mounting base 11 of the heat sink 70, and the cover 13 of the heat sink 70 is fastened to the rivet pressing bolt 56 of the mounting base 11 of the heat sink 70 by the fastening nut 55.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A protective structure for protecting a heat sink of an electrical device in a track-bound traction system, the protective structure comprising:

the base is used for fixing the radiator; and

2. The protective structure according to claim 1, wherein the enclosure comprises a base plate and a surrounding plate surrounding the base plate, the surrounding plate and the base plate define a cavity, and the cavity is covered on the base to form the protective space;

3. The protective structure of claim 2, wherein the base plate defines a plurality of air holes arranged in an array, and the skirt defines a plurality of air holes arranged in an array.

4. The protective structure of claim 2 wherein the end of the shroud facing away from the base is bent outwardly to form a web, the web being secured to the base.

5. The protective structure of claim 1, further comprising a seal secured to a surface of the base facing away from the enclosure and circumferentially disposed along an outer edge of the base.

6. The protective structure according to claim 5, wherein the sealing member includes a backing plate, the backing plate is fixed to a surface of the base facing away from the housing, the backing plate is provided with a hollow area for avoiding a power module connected to the heat sink, and the sealing member further includes a sealing strip, the sealing strip is attached to a surface of the backing plate facing away from the housing and arranged around the hollow area.

7. The protective structure of claim 1 wherein the surface of the enclosure is provided with a handle.

8. The protective structure of claim 1, wherein the base is further provided with a grounding post for grounding.

9. An electrical apparatus, comprising a housing and a protective structure as claimed in any one of the preceding claims, the protective structure being fixed by its base to an outer side surface of the housing.

10. The electric apparatus as claimed in claim 9, wherein a side surface of the case is concavely provided with a fixing groove, and the base is fixed to a bottom wall of the fixing groove.