Transformer and charging pile
By designing dustproof boxes, thrust mechanisms, heat dissipation holes and blowers in the AC transformer, the problem of lack of dustproof equipment in the prior art is solved, effectively blocking dust and preventing temperature overheating, and extending the service life of the transformer.
Patent Information
- Application Number
- CN202411355256.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2024-12-27
AI Technical Summary
Existing AC transformers lack dust-proof equipment and are susceptible to dust contamination, affecting their service life and performance.
A transformer including a dustproof box and a thrust mechanism is designed. The dustproof box is equipped with a sliding rail and a threaded shaft. The consignment seat is cooperated with the threaded shaft. The driving motor can push the AC transformer into and out of the dustproof box. The top cover is equipped with The heat dissipation hole and dustproof mesh are combined with the blower and the dust cleaning mechanism to ensure that the dust does not enter and prevent overheating.
Effectively block dust from contacting the AC transformer body, facilitate maintenance, avoid overheating of temperature and extend service life.
Smart Images
Figure CN119207945A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of transformers, and in particular to a transformer and a charging pile. Background Art
[0002] Charging piles, namely electric vehicle charging stations or electric vehicle power supply equipment, with the development of new energy technology, more and more cars using fuel engines are replaced by electric vehicles, so that more charging piles are put to use; wherein, the charging pile is mainly composed of key equipment such as a charging pile chassis, a charging gun, and an AC transformer. Usually, the AC transformer is connected to an external AC power, which is processed by the AC transformer into low-voltage DC power, and then the low-voltage DC power is supplied to the DC transformer in the charging pile chassis; the prior art related to AC transformers is disclosed in the Chinese patent library, for example, the publication number CN105977001A discloses a 10kV automatic grounding AC transformer, including a body, an iron core, a winding, a high-voltage bushing, a low-voltage input terminal, a high-voltage output terminal, a measuring terminal, a grounding terminal and a test power supply, the winding is wound on the iron core and immersed in transformer oil, and the winding lead-out wire passes through the high-voltage bushing and connects to the high-voltage output terminal; the short-circuit rod is arranged in the high-voltage bushing, one end of the short-circuit rod extends out of the high-voltage bushing and is connected to the relay, the relay is connected to the grounding terminal through an electromagnet, and an automatic switching switch is provided between the electromagnet and the test power supply.
[0003] For another example, publication number CN109509617B discloses a dual-input AC transformer, including a pair of transformer cores and a single-phase input and output device or a three-phase input and output device arranged on the pair of transformer cores. The advantages are: the dual-input AC transformer is composed of an iron core and a coil, avoiding the use of power electronic devices, firstly, the capacity can be made larger, secondly, it has stronger impact resistance, thirdly, its own reliability is guaranteed, fourthly, the service life is long, and fifthly, the voltage can be made higher.
[0004] The problem with the above two prior arts (CN105977001A, CN109509617B) is that the existing AC transformer is not provided with dustproof equipment, so that the AC transformer is easily contaminated by dust. Summary of the invention
[0005] In view of this, an object of the present invention is to provide a transformer and a charging pile, which solves the problem that the existing AC transformer lacks dustproof equipment.
[0006] In the first aspect, the present invention discloses a transformer, including a mounting frame, a dustproof box fixedly connected to the mounting frame, and a closed door for opening and closing is provided on the front side of the dustproof box; the dustproof box is connected to an AC transformer body through a pushing mechanism, and the pushing mechanism is used to push the AC transformer body out of the dustproof box or pull it back into the dustproof box; the pushing mechanism includes a sliding rail, which is longitudinally arranged in the dustproof box, a threaded shaft is connected in the sliding rail, and the extension direction of the threaded shaft is consistent with the length direction of the sliding rail; a shipping seat is slidably connected in the sliding rail, the shipping seat is threadedly matched with the threaded shaft, the AC transformer body is fixedly connected to the shipping seat, and the threaded shaft is transmission-connected to a driving motor; a top cover is vertically slidably connected to the top opening of the dustproof box, at least two heat dissipation holes are opened on the top cover, and each heat dissipation hole is provided with a dust-proof mesh.
[0007] As an optimization of the transformer, the transformer also includes a blower, at least one blower is installed under a single heat dissipation hole, and the air outlet of the single blower is opposite to the bottom of the dust shield mesh; a start-stop switch is provided on the dustproof box at the lower end of the top cover, and multiple blowers are electrically connected in series, and the positive and negative poles of the start-stop switch are electrically connected to the blowers at the head and tail sections respectively; the push button of the start-stop switch is opposite to the lower edge of the top cover, and when the top cover presses the push button, the start-stop switch is turned on and starts the blower; a limit arm is fixedly connected to the top cover, and the limit arm forms a vertical sliding connection with the slide seat on the dustproof box; a first elastic component is connected between the limit arm and the slide seat, and when the first elastic component is in a natural state, the top cover and the push button of the start-stop switch are separated from each other.
[0008] Specifically, the start-stop switch includes a push button, which is slidably connected to the key cavity, a first conductive contact is provided on the push button, and a second conductive contact is provided in the key cavity, and the first conductive contact and the second conductive contact are arranged opposite to each other; a second elastic component is connected between the push button and the second conductive contact, and when the second elastic component is in a natural state, the first conductive contact and the second conductive contact are separated from each other; the first conductive contact and the second conductive contact are electrically connected to a positive pole and a negative pole, respectively, and the positive pole and the negative pole are electrically connected to the first and last blowers connected in series, respectively.
[0009] The optimized transformer also includes a floating dust cleaning mechanism, which is connected to the limiting arm; the floating dust cleaning mechanism includes a tooth plate, which is fixedly connected to the limiting arm, and a transmission gear is meshedly connected to the tooth plate, and the transmission gear is transferred to the dustproof box, and the fan impeller is fixedly connected to the central axis of the transmission gear.
[0010] In a second aspect, the present invention discloses a charging pile, including a transformer, wherein the transformer is installed on one side of a base, and a charging pile chassis is installed on the other side of the base through a disassembly and assembly mechanism, and the transformer is electrically connected to the charging pile chassis.
[0011] Specifically, the disassembly and assembly mechanism includes a plug-in rod, a guide groove is provided on the base, and the boss on the charging pile chassis is adapted to the guide groove; a socket is provided on the boss, and a lock hole is provided on one side passing through the guide groove. The plug-in rod passes through the lock hole and can be plug-fitted with the socket, and a third elastic component is connected between the plug-in rod and the base.
[0012] The optimized charging pile also includes a shielding mechanism, which is installed on the top cover, and is used to shield the dust-proof mesh; the shielding mechanism includes a sliding column, and the two sliding columns are respectively arranged on the front and rear sides of the upper end of the top cover, and a curtain is provided between the two sliding columns, and the two sides of the fixed edge of the curtain are respectively fixedly connected with the two sliding columns, and the two sides of the sliding edge of the curtain are respectively slidably connected with the two sliding columns; a fourth elastic component is connected between the fixed edge and the sliding edge of the curtain, and the fourth elastic component is sleeved on the sliding column; when the fourth elastic component is in a natural state, the unfolded curtain can be used to shield the upper side of the dust-proof mesh; a driving source for unfolding or contracting the curtain is provided on one side of the curtain.
[0013] As one implementation of the driving source, the driving source is an electric telescopic rod, which is placed on the inner side of the top cover, and the telescopic shaft of the electric telescopic rod is connected to the sliding edge of the curtain.
[0014] The beneficial effects of the present invention are: Compared with the prior art, the present invention can effectively block most of the dust from contacting the AC transformer body at the source by combining a dustproof box and a dustproof mesh, thereby solving the problem of the lack of dustproof equipment in the prior AC transformer, thereby avoiding dust from damaging the AC transformer body. On the other hand, the present invention also facilitates the maintenance of the AC transformer body by the staff by combining a pushing mechanism, and further combines the heat dissipation holes with the dustproof box and the dustproof mesh to avoid overheating of the AC transformer body and affecting its use. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 Schematic diagram of the three-dimensional structure of the transformer.
[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the pushing mechanism.
[0017] Figure 3 This is a schematic diagram of the optimized three-dimensional structure of the transformer.
[0018] Figure 4 Schematic diagram of the local three-dimensional structure of the transformer after optimization.
[0019] Figure 5 This is an internal cross-sectional view of the start-stop switch.
[0020] Figure 6 It is a schematic diagram of the installation structure of the floating dust cleaning mechanism.
[0021] Figure 7 This is a schematic diagram of the overall structure of the charging pile.
[0022] Figure 8 It is a schematic diagram of the exploded structure of the disassembly and assembly mechanism.
[0023] Fig. 9 Schematic diagram of the assembly structure of the shielding mechanism.
[0024] Fig.10 It is a schematic diagram of the local structure of the present invention.
[0025] In the figure, 1, erection frame; 2, dustproof box; 3, closed door; 4, AC transformer body; 5, sliding rail; 6, threaded shaft; 7, shipping seat; 8, driving motor; 9, motor dust cover; 10, top cover; 11, heat dissipation hole; 12, dust screen; 13, blower; 14, limit arm; 15, slide seat; 16, first elastic component; 17, press key; 18, key cavity; 19, first conductive contact; 20, The second conductive contact piece; 21. The second elastic component; 22. The tooth plate; 23. The transmission gear; 24. The impeller; 25. The base; 26. The charging pile chassis; 27. The plug-in rod; 28. The guide groove; 29. The boss; 30. The socket; 31. The lock hole; 32. The third elastic component; 33. The slide column; 34. The curtain; 35. The fourth elastic component; 36. The blocking body; 37. The rope; 38. The fixed pulley; 39. The sponge strip. DETAILED DESCRIPTION
[0026] In order to clearly understand the technical solution of the present application, a transformer and a charging pile provided by the present application will be described in detail below in combination with specific embodiments and drawings.
[0027] The terms used in the following embodiments are only for the purpose of describing specific embodiments, and are not intended to be used as limitations to the present application. As used in the specification and claims of the present application, the singular expressions "one", "a kind of", "above", "the" and "this" are intended to also include expressions such as "one or more", unless there is a clear indication to the contrary in the context. It should also be understood that in the following embodiments of the present application, "at least one", "one or more" refer to one, two or more than two.
[0028] References to "one embodiment" or "some embodiments" etc. described in this specification mean that a particular feature, structure or characteristic described in conjunction with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "one embodiment", "in some embodiments", "in some other embodiments", "in some other embodiments", etc. appearing in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways. Example 1
[0029] This embodiment provides a transformer, referring to Figure 1 , which shows a schematic diagram of the three-dimensional structure of the transformer. It can be seen from the figure that the transformer includes a mounting frame 1, and a dustproof box 2 is connected to the top side of the mounting frame 1 in a fixed manner by welding. A closed door 3 for opening and closing is installed on the front side of the dustproof box 2. An AC transformer body 4 is arranged in the dustproof box 2. The AC transformer body 4 directly uses existing products available on the market, such as the S9-S11-S13 series of oil-immersed power transformers, which will not be described in detail here; a pushing mechanism is installed at the bottom of the AC transformer body 4, and the pushing mechanism is used to push the AC transformer body 4 out of the dustproof box 2 or pull it back into the dustproof box 2. Through the setting of the pushing mechanism, when the AC transformer body 4 needs to be repaired, the pushing mechanism can be used to move the AC transformer body 4 out of the dustproof box 2 at any time, so as to facilitate the staff to perform maintenance operations on the AC transformer body 4; specifically, further combined with Figure 2 The three-dimensional structural schematic diagram of the pushing mechanism shown in the figure, the pushing mechanism includes a sliding rail 5, which is arranged on the inner bottom of the dustproof box 2 in a longitudinally extending manner, and a threaded shaft 6 is rotatably connected in the sliding rail 5, and the extension direction of the threaded shaft 6 is consistent with the length direction of the sliding rail 5; a shipping seat 7 is slidably connected in the sliding rail 5, and the threaded hole formed on the shipping seat 7 forms a threaded fit with the threaded shaft 6, and the two sides of the shipping seat 7 are detachably fixedly connected with the AC transformer body 4 by bolts; the free end of the threaded shaft 6 passes through the dustproof box 2 in a rotatable manner and is placed on the outside of the dustproof box 2, and the free end of the threaded shaft 6 is fixedly connected to the driving motor 8 through a bearing; the driving motor 8 is fixedly connected to the outer wall of the dustproof box 2 through a suspension arm, and a motor dust cover 9 is fixed to the outside of the driving motor 8 and the dustproof box 2.
[0030] Further integration Figure 1A top cover 10 is fastened to the top opening of the dustproof box 2 in a vertically sliding manner, and a plurality of heat dissipation holes 11 are provided above the top cover 10 (the number of heat dissipation holes 11 in this embodiment is 4), and a dust-blocking mesh 12 is fixedly connected to each heat dissipation hole 11; by providing the heat dissipation holes 11 and the dust-blocking mesh 12, the present invention ensures that the dustproof box 2 can achieve heat dissipation of the AC transformer body 4 in the dustproof box 2 while having the original dust-proof effect.
[0031] Compared with the prior art, the present invention can effectively block most of the dust from contacting the AC transformer body 4 at the source by combining the dustproof box 2 and the dustproof mesh 12, thereby solving the problem of the lack of dustproof equipment in the existing AC transformer, thereby avoiding dust from damaging the AC transformer body 4; on the other hand, the present invention also facilitates the maintenance of the AC transformer body 4 by the staff by combining the pushing mechanism; and further combines the heat dissipation hole 11 with the dustproof box 2 and the dustproof mesh 12 to avoid overheating of the AC transformer body 4 and affect its use.
[0032] As the transformer is used over time, a large amount of dust will be deposited on the dust shield mesh 12 and the top cover 10. If the dust is not cleaned in time, the accumulated dust will block the heat dissipation holes 11, thereby affecting the heat dissipation of the AC transformer body 4. To this end, the present invention provides the following optimization solutions to address the above-mentioned problems.
[0033] Combination Figure 3-4 ,in, Figure 3 The figure shows the three-dimensional structure diagram of the transformer after optimization. Figure 4 What is shown is a schematic diagram of the partial three-dimensional structure of the transformer after optimization. It can be seen from the above two figures that the transformer also includes a blower 13. A blower 13 is installed on the two side edges below each heat dissipation hole 11, and the air outlet of a single blower 13 is opposite to the bottom of the dust-proof mesh 12; a start-stop switch is provided on the dustproof box 2 at the lower end of the top cover 10, and multiple blowers 13 are connected in series, and the positive and negative poles of the start-stop switch are electrically connected to the blowers 13 at the head and tail sections respectively; the push button 17 of the start-stop switch is connected to the bottom of the top cover 10. The end edges are opposite, when the top cover 10 presses the push button 17 downward to the lowest position, the start-stop switch is turned on and the blower 13 is started; two limit arms 14 are fixedly connected to the two sides of the bottom of the top cover 10, and a single limit arm 14 forms a vertical sliding connection with the corresponding slide 15 in the dustproof box 2; a first elastic component 16 (such as a spring, etc.) is connected between the limit arm 14 and the slide 15. When the first elastic component 16 is in a natural state, the top cover 10 and the push button 17 of the start-stop switch are in a separated state; the specific structure of the start-stop switch is as follows.
[0034] refer to Figure 5, which shows an internal cross-sectional view of the start-stop switch. As can be seen from the figure, the start-stop switch includes a push button 17, which is slidably connected in a key cavity 18. A first conductive contact 19 is provided at the bottom end of the push button 17, and a second conductive contact 20 is provided at the bottom of the key cavity 18 opposite to the first conductive contact 19. A second elastic component 21 (such as a spring) is connected between the push button 17 and the second conductive contact 20; when the second elastic component 21 is in a natural state, the first conductive contact 19 and the second conductive contact 20 are in a separated state, and the first conductive contact 19 and the second conductive contact 20 are electrically connected to a positive electrode and a negative electrode, respectively, and the positive electrode and the negative electrode are electrically connected to the first and tail blowers 13 connected in series through wires.
[0035] Although most of the dust will be blocked by the dust-proof mesh 12, a small amount of floating dust will still enter the dust-proof box 2 and fall on the AC transformer body 4. Therefore, in order to timely remove the trace floating dust falling on the AC transformer body 4, as a further optimization of the transformer, the transformer also includes a floating dust cleaning mechanism, refer to Figure 6 , which is a schematic diagram of the installation structure of the floating dust cleaning mechanism. It can be seen from the figure that the floating dust cleaning mechanism is connected to the limiting arm 14. The specific structure of the floating dust cleaning mechanism is as follows.
[0036] For details, see Figure 6 The floating dust cleaning mechanism includes a tooth plate 22, which is fixedly connected to the limit arm 14 by welding. The tooth portion of the tooth plate 22 is meshed with a transmission gear 23, and the transmission gear 23 is rotatably connected to the dustproof box 2 through a central axis, and a fan impeller 24 is concentrically fixedly connected to the free end of the central axis.
[0037] The working principle of dust removal of the optimized transformer is as follows: First, as time goes by, a large amount of dust will gradually accumulate on the dust screen 12 and the top cover 10. Figure 3 As shown in FIG. 1 , the top cover 10 moves downward along a1 due to the gradual increase of dust, and the downwardly moved top cover 10 gradually contacts the push button 17 of the start / stop switch; then, as shown in FIG. Figure 5 As shown in , after the top cover 10 contacts the push button 17, it will continue to press the push button 17 to move along the a1 direction until the moving push button 17 drives the first conductive contact piece 19 to contact the second conductive contact piece 20. At this time, the start-stop switch is turned on, causing the multiple blowers 13 connected in series to start after being powered on; finally, continue to refer to Figure 3, the started blower 13 blows the airflow along direction b to the bottom and periphery of the dust-blocking mesh 12, and the dust is separated from the dust-blocking mesh 12 and the periphery under the action of the airflow; at the same time, the downwardly moved top cover 10 will correspondingly drive the limit arm 14 and the tooth plate 22 to move along direction a1, thereby linking the transmission gear 23 and the impeller 24 to rotate along direction c1 (the impeller 24 rotates relatively slowly along direction c1, resulting in a poor effect of removing floating dust); once the dust on the dust-blocking mesh 12 and the top cover 10 The dust is removed, and under the action of the first elastic component 16, the top cover 10, the limit arm 14, and the tooth plate 22 all return to their original positions in the direction of a2, thereby linking the transmission gear 23 and the impeller 24 to rotate in the opposite direction in the direction of c2 again. At this time, the rotating impeller 24 can clean the floating dust on the AC transformer body 4; correspondingly, due to the separation of the top cover 10 and the push button 17, under the action of the second elastic component 21, the push button 17 returns to its original position, thereby disconnecting and connecting the start-stop switch and the blower 13. Example 2
[0038] This embodiment provides a charging pile, referring to Figure 7 , which is a schematic diagram of the overall structure of the charging pile. It can be seen from the figure that the charging pile includes the transformer in Example 1, which is fixed on the left side of the base 25. The charging pile chassis 26 is installed on the right side of the base 25 through a disassembly and assembly mechanism, and the transformer is electrically connected to the charging pile chassis 26; the specific structure of the disassembly and assembly mechanism is as follows.
[0039] refer to Figure 8 , which shows a schematic diagram of the exploded structure of the disassembly and assembly mechanism. It can be seen from the figure that the disassembly and assembly mechanism includes an insertion rod 27, a guide groove 28 is opened on the right side of the base 25, and a boss 29 adapted to the guide groove 28 is formed at the bottom of the charging pile chassis 26, and a socket 30 is formed on the boss 29; a locking hole 31 is formed on one side of the guide groove 28, the insertion rod 27 passes through the locking hole 31 and can be plugged and adapted with the socket 30, and a third elastic component 32 (such as a spring, a rubber strip, etc.) is connected between the insertion rod 27 and the base 25.
[0040] During the use of the transformer of the charging pile, it is inevitable to encounter rainy weather. At this time, if the staff is no longer on site, too much rainwater will enter the dustproof box 2 through the dustproof mesh 12, which will cause damage to the AC transformer to a certain extent; To this end, in view of the above problems, the present invention further designs a shielding mechanism, referring to Fig. 9 , which is a schematic diagram of the assembly structure of the shielding mechanism. As shown in the figure, the shielding mechanism is installed on the top cover 10 and is used to shield the dust shielding mesh 12; the specific structure of the shielding mechanism is as follows.
[0041] like Fig.10 As shown in Fig.10What is shown is a schematic diagram of the local structure of the present invention, in which the shielding mechanism includes a sliding column 33, and the two sliding columns 33 are respectively arranged on the front and rear sides of the upper end of the top cover 10, and the left and right ends between the two sliding columns 33 are respectively provided with curtains 34, and the fixed edges of the curtains 34 are respectively fixedly connected with the two sliding columns 33 on both sides, and the sliding edges of the curtains 34 are respectively slidably connected with the two sliding columns 33 on both sides; a fourth elastic component 35 (such as a spring, etc.) is connected between the fixed edge and the sliding edge of the curtain 34, and the fourth elastic component 35 is sleeved on the sliding column 33; when the fourth elastic component 35 is in a natural state, the unfolded curtain 34 can be used to shield the upper side of the dustproof mesh 12; a driving source for unfolding or contracting the curtain 34 is provided on one side of the curtain 34; the specific structure of the driving source is as follows.
[0042] The first embodiment of the driving source is an electric telescopic rod available on the market, which is placed on the inner side of the top cover 10, and the telescopic shaft of the electric telescopic rod is connected to the sliding edge of the curtain 34; this embodiment is not shown in the figure.
[0043] The second embodiment of the driving source is as follows Fig.10 As shown in the figure, the driving source includes a blocking body 36, which is slidably connected to the top cover 10 in a vertically movable manner. When the fourth elastic component 35 is in a compressed state, one end of the blocking body 36 protruding from the top cover 10 can form a barrier for the sliding edge of the curtain 34; the driving source also includes a rope 37, one end of the rope 37 is fixedly connected to the top cover 10, and the other end of the rope 37 passes over the top of the fixed pulley 38 and is fixedly connected to the sponge strip 39, and the fixed pulley 38 is fixedly connected to the dustproof box 2.
[0044] The working principle of the shielding mechanism of the driving source using the second embodiment is as follows, Fig.10 When it rains, the sponge strip 39 absorbs the rain quickly and becomes heavier. The heavier sponge strip 39 pulls the rope 37 downward, causing the top cover 10 to move downward; as the top cover 10 moves upward, the blocking body 36 gradually separates from the top cover 10 until the blocking body 36 separates from the sliding edge of the blocking curtain 34; driven by the fourth elastic component 35, the blocking curtain 34 moves on the sliding column 33, so that the blocking curtain 34 blocks the upper part of the dust blocking mesh 12.
Claims
1. A transformer, characterized in that: The utility model comprises a construction frame (1), a dustproof box (2) fixedly connected to the construction frame (1), and a closed door (3) for opening and closing is provided on the front side of the dustproof box (2); an AC transformer body (4) is connected to the dustproof box (2) via a push mechanism, and the push mechanism is used to push the AC transformer body (4) out of the dustproof box (2) or pull it back into the dustproof box (2); the push mechanism comprises a sliding rail (5), the sliding rail (5) is arranged in the dustproof box (2) along the longitudinal direction, a threaded shaft (6) is connected to the sliding rail (5), and the threaded shaft (6) is connected to the dustproof box (2) along the longitudinal direction. The extension direction of the sliding rail (6) is consistent with the length direction of the sliding rail (5); the sliding rail (5) is slidably connected to the shipping seat (7), the shipping seat (7) and the threaded shaft (6) are threadedly matched, the AC transformer body (4) is fixedly connected to the shipping seat (7), and the threaded shaft (6) is transmission-connected to the driving motor (8); the top opening of the dustproof box (2) is vertically slidably connected to a top cover (10), and at least two heat dissipation holes (11) are opened on the top cover (10), and each heat dissipation hole (11) is provided with a dust-proof mesh (12).
2. The transformer according to claim 1, characterized in that: The transformer further comprises a blower (13), at least one blower (13) being installed below a single heat dissipation hole (11), and an air outlet of the single blower (13) being opposite to the bottom of the dust shielding mesh (12); a start-stop switch is provided on the dustproof box (2) at the lower end of the top cover (10); the plurality of blowers (13) are electrically connected in series, and the positive and negative electrodes of the start-stop switch are electrically connected to the blowers (13) at the first and last sections, respectively; a push button (17) of the start-stop switch is electrically connected to the bottom of the top cover (10); The end edges are opposite to each other, and when the top cover (10) is pressed against the push button (17), the start-stop switch is turned on and the blower (13) is started; a limit arm (14) is fixedly connected to the top cover (10), and the limit arm (14) forms a vertical sliding connection with a slide seat (15) on the dustproof box (2); a first elastic component (16) is connected between the limit arm (14) and the slide seat (15), and when the first elastic component (16) is in a natural state, the top cover (10) and the push button (17) of the start-stop switch are separated from each other.
3. The transformer according to claim 2, characterized in that: The start-stop switch comprises a push button (17), the push button (17) is slidably connected to a key cavity (18), a first conductive contact piece (19) is provided on the push button (17), a second conductive contact piece (20) is provided in the key cavity (18), and the first conductive contact piece (19) and the second conductive contact piece (20) are arranged opposite to each other; a second elastic component (21) is connected between the push button (17) and the second conductive contact piece (20), and when the second elastic component (21) is in a natural state, the first conductive contact piece (19) and the second conductive contact piece (20) are separated from each other; the first conductive contact piece (19) and the second conductive contact piece (20) are electrically connected to a positive electrode and a negative electrode respectively, and the positive electrode and the negative electrode are electrically connected to the first and rear blowers (13) connected in series.
4. The transformer according to claim 2, characterized in that: The transformer also includes a floating dust cleaning mechanism, which is connected to the limiting arm (14); the floating dust cleaning mechanism includes a toothed plate (22), which is fixedly connected to the limiting arm (14), and a transmission gear (23) is meshingly connected to the toothed plate (22), which is transferred to the dustproof box (2), and the central axis of the transmission gear (23) is fixedly connected to the impeller (24).
5. A charging pile, characterized in that: The invention comprises a transformer as claimed in any one of claims 1 to 4, wherein the transformer is mounted on one side of a base (25), a charging pile chassis (26) is mounted on the other side of the base (25) via a disassembly and assembly mechanism, and the transformer is electrically connected to the charging pile chassis (26).
6. The charging pile according to claim 5, characterized in that: The disassembly and assembly mechanism comprises an insertion rod (27); a guide groove (28) is provided on the base (25); a boss (29) on the charging pile chassis (26) is matched with the guide groove (28); a plug hole (30) is provided on the boss (29); a lock hole (31) is provided on one side that passes through the guide groove (28); the insertion rod (27) passes through the lock hole (31) and can be plugged and matched with the plug hole (30); and a third elastic component (32) is connected between the insertion rod (27) and the base (25).
7. The charging pile according to claim 5, characterized in that: The utility model also comprises a shielding mechanism, which is mounted on the top cover (10) and is used to shield the dust-blocking mesh (12); the shielding mechanism comprises a sliding column (33), the two sliding columns (33) are respectively arranged at the front and rear sides of the upper end of the top cover (10); a blocking curtain (34) is arranged between the two sliding columns (33); the two sides of the fixed edge of the blocking curtain (34) are respectively fixedly connected to the two sliding columns (33); the two sides of the sliding edge of the blocking curtain (34) are respectively slidably connected to the two sliding columns (33); a fourth elastic component (35) is connected between the fixed edge and the sliding edge of the blocking curtain (34), and the fourth elastic component (35) is sleeved on the sliding column (33); when the fourth elastic component (35) is in a natural state, the unfolded blocking curtain (34) can be used to shield the upper part of the dust-blocking mesh (12); and a driving source for unfolding or retracting the blocking curtain (34) is arranged on one side of the blocking curtain (34).
8. The charging pile according to claim 7, characterized in that: The driving source is an electric telescopic rod, which is placed on the inner side of the top cover (10), and the telescopic shaft of the electric telescopic rod is connected to the sliding edge of the curtain (34).