A quick maintenance and replacement system for electrical cabinet fans

Abstract

The present invention provides a system for rapid maintenance and replacement of fans in electrical cabinets, which belongs to the field of supporting maintenance of electrical cabinets, and includes a cabinet, a fan and a maintenance vehicle. The fan is provided with an interface rack, and the cabinet is provided with an interface gear. Through the cooperation of the rack and gear, the fan is inserted and hung on the side of the cabinet, and an air duct is provided inside the cabinet. The airflow is guided into the cabinet by the air duct for heat dissipation; the maintenance vehicle includes an armrest and a vehicle plate, and a vertical rod is provided on the vehicle plate, and a support frame is slidably connected to the vertical rod. The front end of the maintenance vehicle is provided with a maintenance vehicle rack that cooperates with the interface gear; when the fan of the electrical cabinet is maintained and replaced, a new fan is placed on the support frame, and the maintenance vehicle is aligned with the fan interface of the cabinet and pushed forward, and the maintenance vehicle rack acts on the interface gear, and the interface gear rotates to push the old fan back out of the cabinet, and the new fan is lowered and pushed away from the cabinet. Then the maintenance vehicle is driven, and the new fan is inserted into the cabinet under the drive of the interface gear. The present invention can realize rapid maintenance and replacement of the fan.

Description

Technical Field

[0001] The invention belongs to the field of supporting maintenance of electrical cabinets, and in particular relates to a rapid repair and replacement system for a fan of an electrical cabinet. Background Art

[0002] In the production workshop of steel enterprises, electrical cabinets are usually in long-term continuous operation. For example, the rectifier cabinets installed in the rolling workshop need to work continuously for 24 hours. This high-intensity continuous operation puts a great burden on the fans used for cooling in the electrical cabinets, which makes the fans prone to failure. The fans equipped with the electrical cabinets of steel enterprises are relatively bulky and are placed at the bottom of the electrical cabinets, which not only makes maintenance and replacement inconvenient, but also causes great losses to the production of enterprises due to long-term power outages. Therefore, it is necessary to develop a rapid maintenance and replacement system. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a system for quickly repairing and replacing fans of electrical cabinets, which is used to improve the replacement efficiency of fans of electrical cabinets at workshop sites.

[0004] The present invention achieves the above technical objectives through the following technical means.

[0005] An electrical cabinet fan rapid maintenance and replacement system, comprising a cabinet body, a fan and a maintenance vehicle;

[0006] The cabinet body is provided with a fan interface on the side thereof, and an air inlet, a power socket and an interface gear are arranged at the fan interface; an air duct is arranged inside the cabinet body, and the air duct is connected with the air inlet;

[0007] The fan is matched with the fan interface of the cabinet, and the end face of the fan is provided with an air outlet and a power plug, which are matched with the air inlet and the power socket respectively. The fan is also provided with an interface rack, which is matched with the interface gear. An inclined slide is provided on the side of the fan, and the bottom end of the inclined slide is located on the side of the air outlet;

[0008] The maintenance vehicle comprises a vehicle plate and an armrest, a grip is provided on the armrest, a conveying platform is provided on the upper end surface of the vehicle plate, rolling grooves are provided on both sides of the conveying platform, a vertical rod is provided on the vehicle plate outside the rolling groove, a support frame is slidably connected to the vertical rod, a connecting rod is hinged at the lower end of the support frame, the connecting rod matches the inclined slide and the rolling groove, a positioning buckle is provided on the vertical rod, a cross bar is also fixedly connected to the vertical rod below the positioning buckle, a push rod mechanism is provided on the cross bar, a maintenance vehicle rack is provided at the front end of the maintenance vehicle, the maintenance vehicle rack matches the interface gear, and the grip, the push rod mechanism and the positioning buckle are connected by steel wire.

[0009] Furthermore, the fan is a cubic structure, and there are four interface racks, which are respectively located on both sides of the top surface and the bottom surface of the fan.

[0010] Furthermore, there are two groups of racks on the maintenance vehicle, which are respectively arranged on the vehicle plate and the front end of the crossbar, and the number of racks in each group of the maintenance vehicle is two.

[0011] Furthermore, the distance between the positioning buckle and the cross bar is the height of a fan.

[0012] Furthermore, inclined slideways are provided on both sides of the fan.

[0013] Furthermore, a roller is provided at the end of the connecting rod.

[0014] Furthermore, a spring is connected between the connecting rod and the supporting frame.

[0015] Furthermore, the push rod mechanism includes a push rod, a push rod slider and a buckle push rod, the push rod is rotatably connected to the push rod slider, the push rod slider and the buckle push rod are respectively arranged in two slide grooves, and the starting position of the push rod slider is located in front of the buckle push rod, the push rod is connected to the handle through a steel wire, and the buckle push rod is connected to the positioning buckle through a steel wire.

[0016] Furthermore, the armrest is fixed at the rear end of the vehicle panel, and the handle is located at the end of the armrest.

[0017] The beneficial effects of the present invention are:

[0018] (1) The present invention hangs the electrical cabinet fan on the side of the cabinet body, which can be directly disassembled and assembled without opening the cabinet door, thereby providing a basis for rapid maintenance and replacement. By setting up a matching maintenance vehicle, the old and new fans on the electrical cabinet in the workshop can be replaced with the maintenance vehicle. Only four actions and a few seconds are required for one person to complete the entire replacement operation, which greatly improves the efficiency of maintenance and replacement. In addition, since the maintenance and replacement process is extremely fast, it can be directly replaced without power off, thereby ensuring the continuous production of the workshop.

[0019] (2) The maintenance vehicle of the present invention has only mechanical parts and is more reliable than equipment with electronic components.

[0020] (3) The present invention realizes the installation and fixation of the fan on the cabinet by setting four interface racks and four interface gears. While ensuring the stability of the installation, there is no need to set other fixing structures such as buckles, which not only facilitates quick disassembly and assembly, but also simplifies the structure and reduces costs.

[0021] (4) On the maintenance vehicle of the present invention, the positioning clip is set above the cross bar at a height of one fan, which ensures that there is enough space to push the old fan backwards during the lowering of the new fan, and avoids excessive longitudinal space occupation and instability after the center of gravity is raised due to the positioning clip being set too high.

[0022] (5) The present invention provides inclined slideways on both sides of the fan, so that when the fan is pushed backward by the roller, the forces in the left and right directions are balanced, and the stability is improved.

[0023] (6) The present invention sets a roller at the end of the connecting rod, so that the inclined slideway of the fan at the end of the connecting rod changes from sliding contact to rolling contact, thereby reducing friction and improving stability during movement.

[0024] (7) The present invention arranges a spring between the connecting rod and the support frame, so that when the connecting rod presses down the old fan, the new fan located above can also exert a certain downward pressure on the connecting rod through the spring, thereby ensuring that the old fan is smoothly pushed away, and through the reaction force of the spring on the support frame, the descending speed of the new fan is not too large to cause damage to the device.

[0025] (8) The present invention adopts the linkage design between the handle, the push rod mechanism and the positioning buckle, especially the push rod mechanism first moves a certain distance and then drives the positioning buckle, so that the old fan can be pushed backward a certain distance before the new fan is loosened and falls. Otherwise, if the new fan falls at the same time, it is possible that the roller cannot fall on the inclined slide of the old fan. Therefore, the above design ensures the interaction and coordination between the various components during the fan replacement process of the present invention.

[0026] (9) The armrest of the present invention is fixed at the rear end of the vehicle panel, and the grip is arranged at the end of the armrest, which conforms to the force exertion habit of the human body when replacing the fan, so that the operator can perform various operations more easily and conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of the electrical cabinet of the present invention;

[0028] Figure 2 It is an assembly relationship diagram of the electrical cabinet and the fan of the present invention;

[0029] Figure 3 This is a structural diagram of the fan of the present invention;

[0030] Figure 4 This is a structural diagram of the maintenance vehicle of the present invention;

[0031] Figure 5 This is a structural diagram of the transmission platform of the present invention;

[0032] Figure 6 This is a structural diagram of the support frame and connecting rod of the present invention;

[0033] FIG. 7( a ) is a schematic diagram showing the connection relationship between the handle, the push rod mechanism, and the positioning buckle of the present invention;

[0034] FIG7( b ) is a schematic diagram of the putter and the handle in linkage with each other according to the present invention;

[0035] FIG7( c ) is a schematic diagram of the push rod slider of the present invention being linked with the handle;

[0036] FIG7( d ) is a schematic diagram showing the positioning buckle and the handle in linkage with each other according to the present invention;

[0037] FIG8( a ) is a diagram showing the fan maintenance and replacement preparation state of the present invention;

[0038] FIG8( b ) is a diagram showing the coordination relationship between the maintenance vehicle and the cabinet of the present invention;

[0039] FIG8( c ) is a diagram showing the state of the maintenance vehicle of the present invention pushing out the old fan;

[0040] FIG8( d ) is a diagram showing the state of the maintenance vehicle of the present invention when the grip is tightened;

[0041] FIG8( e ) is a diagram showing the state of the maintenance vehicle handle of the present invention when it is released;

[0042] FIG8( f ) is a state diagram of the maintenance vehicle of the present invention when it is withdrawn from the cabinet;

[0043] FIG8( g ) is a state diagram after the replacement of the old and new fans of the present invention is completed;

[0044] FIG9( a ) is a state diagram of the fresh air blower of the present invention when it is just lowered;

[0045] FIG9( b ) is a state diagram of the roller of the present invention when it descends to the bottom;

[0046] FIG9( c ) is a state diagram of the fresh air fan of the present invention after it is completely lowered;

[0047] Figure numerals: 1. cabinet, 11. electrical components, 12. air duct, 13. air inlet, 14. power socket, 15. interface gear, 2. fan, 21. interface rack, 22. inclined slide, 23. air outlet, 24. power plug, 3. maintenance vehicle, 31. vehicle plate, 311. conveying platform, 312. rolling groove, 32. handrail, 33. handle, 34. vertical rod, 341. support frame, 342. connecting rod, 343. positioning buckle, 344. roller, 345. spring, 35. cross bar, 351. push rod mechanism, 3511. push rod, 3512. push rod slider, 3513. buckle push rod, 36. maintenance vehicle rack. DETAILED DESCRIPTION

[0048] Embodiments of the present invention are described in detail below, examples of the illustrated embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0049] The electric cabinet fan rapid maintenance and replacement system of the present invention comprises a cabinet body 1, a fan 2 and a maintenance vehicle 3.

[0050] like Figure 1 In the electrical cabinet shown, the fan 2 is externally mounted at the fan interface at the bottom of the side of the cabinet 1, and the cabinet 1 is provided with electrical components 11 and air ducts 12.

[0051] like Figure 2 As shown, the joint between the cabinet 1 and the fan 2 is provided with an air inlet 13, a power socket 14 and an interface gear 15, wherein the air inlet 13 is connected to the air duct 12, and there are four interface gears 15, which are respectively arranged on the left and right sides above the joint and on the left and right sides below the joint;

[0052] like Figure 3 As shown, the fan 2 is provided with an interface rack 21, a power plug 24 and an air outlet 23; the fan 2 is a cubic structure as a whole, and the structural rack 21 is respectively located on both sides of the top and bottom surfaces of the fan 2, and both sides of the fan 2 are provided with obliquely arranged inclined slides 22, and the two ends of the inclined slides 22 are respectively located at the two ends of the diagonal of the side of the fan 2, and the bottom end of the inclined slides 22 is located on the side of the air outlet 23 of the fan 2.

[0053] like Figure 2 As shown, the fan 2 is inserted through the interface rack 21 and the interface gear 15, and is hung on the side of the cabinet 1. At this time, the power plug 24 and the air outlet 23 of the fan are respectively plugged into the power socket 14 and the air inlet 13 of the cabinet 1; the cabinet 1 supplies power to the fan 2 through the power socket 14 and the power plug 24; when the fan 2 is working, the air outlet 23 ventilates the inside of the cabinet 1 through the air inlet 13, and the air flow blows upward to the electrical components 11 through the air duct 12 arranged at the bottom of the cabinet 1, thereby achieving air cooling.

[0054] like Figure 4 The maintenance vehicle 3 shown in the figure has the rear of the maintenance vehicle 3 on the left side and the front of the maintenance vehicle 3 on the right side. The maintenance vehicle 3 includes a vehicle plate 31 and an armrest 32. The armrest 32 is fixed to the rear end of the vehicle plate 31. A grip 33 is provided at the end of the armrest 32. The grip 33 has a wrench mechanism. A wheel is provided at the lower end of the vehicle plate 31. A conveying platform 311 is arranged on the upper end surface of the vehicle plate 31.

[0055] like Figure 5 As shown, the conveying platform 311 is provided with a plurality of conveying rollers through a rotating shaft, and the conveying rollers can rotate around their respective rotating shafts. Rolling grooves 312 are provided on both sides of the conveying platform 311 .

[0056] like Figure 4As shown, two vertical rods 34 are vertically arranged in the middle of the vehicle plate 31, and the two vertical rods 34 are respectively located outside the two rolling grooves 312. A slide groove is arranged on the vertical rod 34, and the slide grooves on the two vertical rods 34 are slidably connected to a support frame 341, and a connecting rod 342 is hinged at the lower end of the support frame 341;

[0057] like Figure 6 As shown, a spring 345 is connected between the connecting rod 342 and the support frame 341, and a roller 344 is provided at the end of the connecting rod 342. The spacing between the two rollers 344, the spacing between the inclined slides 22 on both sides of the fan 2, and the spacing between the rolling grooves 312 on both sides of the conveying platform 311 are matched, that is, the two rollers 344 can fall on the inclined slides 22 on both sides of the fan 2 at the same time, and the two rollers 344 can also fall into the rolling grooves 312 on both sides at the same time.

[0058] like Figure 4 As shown, when the support frame 341 moves down along the slide groove of the vertical rod 34, the roller 344 falls into the rolling groove 312, and as the support frame 341 continues to move down, the roller 344 moves backward along the rolling groove 312, and the connecting rod 342 rotates around the hinge point and compresses the spring 345; the vertical rod 34 is also provided with a positioning buckle 343, which can clamp the support frame 341 and fix it on the vertical rod 34;

[0059] In the middle of the left and right vertical rods 34, at a position about the height of a fan 2 below the positioning buckle 343, a horizontal rod 35 extending toward the front of the maintenance vehicle 3 is fixed. The two horizontal rods 35 are symmetrical to each other in the left and right directions. The front ends of the horizontal rods 35 and the front ends of the vehicle plates 31 are fixed with maintenance vehicle racks 36. There are four maintenance vehicle racks 36, which can be matched with the four interface gears 15 of the cabinet 1 respectively. A push rod mechanism 351 is provided in the middle of the horizontal rod 35.

[0060] 7(a)-(d) is a schematic diagram showing the linkage between the handle 33, the push rod mechanism 351 and the positioning buckle 343. The push rod mechanism 351 includes a push rod 3511, a push rod slider 3512 and a buckle push rod 3513. The push rod 3511 is connected to the push rod slider 3512 via a rotating shaft. The push rod slider 3512 is provided with a limit block to limit the rotation angle of the push rod 3511. The push rod slider 3512 and the buckle push rod 3513 are respectively arranged in their respective slide grooves. The two slide grooves are arranged in parallel, and when in the starting position without external force, the push rod slider 3512 is located in front of the buckle push rod 3513; the handle 33 and the push rod 3511 are connected by a steel wire, and the buckle push rod 3513 and the positioning buckle 343 are connected by a steel wire.

[0061] As shown in FIG. 7( b ), the handle 33 is gripped, the wire between the handle 33 and the push rod 3511 is tightened, and the push rod 3511 rotates accordingly, and stops rotating at the limit block provided on the push rod slider 3512;

[0062] As shown in FIG. 7( c ), continue to hold the handle 33 tightly, and the push rod 3511 is restricted by the limiting block, thereby pushing the push rod slider 3512 to move along the slide groove until the end of the push rod 3511 contacts the buckle push rod 3513 ;

[0063] As shown in Figure 7(d), the handle 33 is further tightened, and the buckle push rod 3513 is moved along the slide groove by the action of the end of the push rod 3511, causing the steel wire between the buckle push rod 3513 and the positioning buckle 343 to tighten, and the positioning buckle 343 to shrink inward, thereby loosening the fixation to the support frame 341; the handle 33, the push rod mechanism 351, and the positioning buckle 343 are also connected to the reset spring. When the handle 33 is released, the handle 33, the push rod mechanism 351 and the positioning buckle 343 are all acted upon by the reset spring and move in the opposite direction to return to the initial position shown in Figure 7(a).

[0064] The fan replacement principle of the electrical cabinet fan rapid maintenance and replacement system of the present invention is as follows:

[0065] As shown in FIG. 8( a ), the support frame 341 of the maintenance vehicle 3 is in a fixed position by the positioning buckle 343 , and the new fan is placed on the support frame 341 , with the air outlet 23 facing forward;

[0066] As shown in FIG8(b), the maintenance vehicle 3 is aligned with the fan interface of the cabinet 1, and the maintenance vehicle 3 is pushed forward. The four maintenance vehicle racks 36 disposed at the front end of the maintenance vehicle 3 cooperate with the interface gear 15 on the cabinet 1. The interface gear 15 rotates as the maintenance vehicle rack 36 moves forward and pushes the interface rack 21 of the old fan in the reverse direction.

[0067] As shown in FIG. 8( c ), as the maintenance vehicle 3 is inserted forward into the cabinet 1 , the old fan originally mounted on the cabinet 1 is pushed out in the reverse direction by the interface gear 15 , and the conveying platform 311 on the maintenance vehicle 3 initially catches the old fan;

[0068] As shown in FIG8(d), the handle 33 is gripped, and the push rod mechanism 351 is linked to push the old fan backwards, and the old fan falls completely on the conveying platform 311, and then the positioning buckle 343 is also linked to loosen the support frame 341. At this time, the new fan and the support frame 341 slide down along the vertical rod 34 under the action of gravity. During the sliding process, the rollers 344 on both sides fall on the inclined slides 22 on both sides of the old fan;

[0069] As shown in Figure 9(a)-(c), it is a schematic diagram of the new fan pressing down the old fan through the connecting rod 342. The new fan and the connecting rod 342 move downward due to gravity, and the roller 344 at the end of the connecting rod 342 pushes the old fan backward along the inclined slide 22 of the old fan. When the roller 344 is pressed down to the bottom and falls into the rolling groove 312, the new fan continues to move downward under the action of gravity and squeezes the connecting rod 342. At this time, the connecting rod 342 rotates around the hinge point, and then the roller 344 moves backward along the rolling groove 312 and further pushes the old fan backward to leave enough space under the new fan; finally, the new fan drops to the bottom and falls on the conveying platform 311.

[0070] As shown in FIG. 8( e ), after the new air blower falls on the conveying platform 311 , the grip 33 is released, the push rod mechanism 351 is reset, and the new air blower is pushed forward;

[0071] As shown in FIG8(f), the fresh air fan is pushed to the fan interface of the cabinet 1 by the push rod mechanism 351. At this time, the interface rack 21 of the fresh air fan cooperates with the interface gear 15 of the cabinet 1. Then, the maintenance vehicle 3 is pulled back, and the maintenance vehicle rack 36 on the maintenance vehicle 3 drives the interface gear 15 to rotate, and then the fresh air fan is inserted into the cabinet 1 through the linkage effect of the interface rack 21 and the interface gear 15;

[0072] As shown in question 8(g), as the maintenance vehicle 3 is fully pulled out, the new fan is fully inserted into the cabinet 1. At this time, the handle 33, the push rod mechanism 351 and the positioning buckle 343 are fully reset; the replacement of the old and new fans is completed.

[0073] The electrical cabinet fan rapid repair and replacement system of the present invention requires only four actions to replace an old fan with a new one: pushing the repair cart 3 forward, gripping the handle 33, releasing the handle 33 and pulling out the repair cart 3. The entire replacement process only takes a few seconds, greatly improving the repair and replacement efficiency. Moreover, direct repair and replacement can be performed without power outage, ensuring continuous production operations in the production workshop of the steel enterprise.

[0074] The electrical cabinet fan rapid repair and replacement system of the present invention does not require an external power source during the repair and replacement process. The repair vehicle 3 does not contain electronic components and has a simple and reliable structure. The old fan can be pushed out by the weight of the new fan, saving manpower at the repair site, and only one person is required to complete the entire set of fan 2 replacement operations at the workshop site.

[0075] The present invention is not limited to the above-mentioned embodiments. Any obvious improvement, substitution or modification that can be made by those skilled in the art without departing from the essential content of the present invention belongs to the protection scope of the present invention.

Claims

1. A quick maintenance and replacement system for fans in electrical cabinets, characterized by: It comprises a cabinet (1), a fan (2) and a maintenance vehicle (3); The cabinet (1) is provided with a fan interface on the side thereof, and an air inlet (13), a power socket (14) and an interface gear (15) are provided at the fan interface; an air duct (12) is provided inside the cabinet (1), and the air duct (12) is communicated with the air inlet (13); The fan (2) matches the fan interface of the cabinet (1); an air outlet (23) and a power plug (24) are provided on the end face of the fan (2); the air outlet (23) and the power plug (24) match the air inlet (13) and the power socket (14) respectively; an interface rack (21) is also provided on the fan (2); the interface rack (21) matches the interface gear (15); an inclined slide (22) is provided on the side of the fan (2), and the bottom end of the inclined slide (22) is located on one side of the air outlet (23); The maintenance vehicle (3) comprises a vehicle plate (31) and an armrest (32), wherein a grip (33) is provided on the armrest (32), a conveying platform (311) is provided on the upper end surface of the vehicle plate (31), rolling grooves (312) are provided on both sides of the conveying platform (311), a vertical rod (34) is provided on the vehicle plate (31) outside the rolling groove (312), a support frame (341) is slidably connected to the vertical rod (34), a connecting rod (342) is hinged at the lower end of the support frame (341), and the connecting rod (342) is connected to the inclined sliding plate (311). The maintenance vehicle (3) is provided with a maintenance vehicle rack (36), the maintenance vehicle rack (36) matches the interface gear (15), and the handle (33), the push rod mechanism (351) and the positioning buckle (343) are connected by a steel wire; A spring (345) is connected between the connecting rod (342) and the supporting frame (341); The push rod mechanism (351) comprises a push rod (3511), a push rod slider (3512) and a buckle push rod (3513); the push rod (3511) is rotatably connected to the push rod slider (3512); the push rod slider (3512) and the buckle push rod (3513) are respectively arranged in two slide grooves, and the starting position of the push rod slider (3512) is located in front of the buckle push rod (3513); the push rod (3511) is connected to the handle (33) through a steel wire, and the buckle push rod (3513) is connected to the positioning buckle (343) through a steel wire.

2. The electrical cabinet fan rapid repair and replacement system according to claim 1 is characterized in that: The fan (2) is a cubic structure, and there are four interface racks (21) in total, which are respectively located on both sides of the top surface and the bottom surface of the fan (2).

3. The electrical cabinet fan rapid repair and replacement system according to claim 2 is characterized in that: There are two groups of racks (36) for the maintenance vehicle, which are respectively arranged on the vehicle plate (31) and the front end of the crossbar (35), and the number of racks (36) in each group is two.

4. The electrical cabinet fan rapid repair and replacement system according to claim 3 is characterized in that: The distance between the positioning buckle (343) and the crossbar (35) is equal to the height of a fan (2).

5. The electrical cabinet fan rapid repair and replacement system according to claim 1 is characterized in that: Both sides of the fan (2) are provided with inclined slideways (22).

6. The electrical cabinet fan rapid repair and replacement system according to claim 1 is characterized in that: A roller (344) is provided at the end of the connecting rod (342).

7. The electrical cabinet fan rapid repair and replacement system according to claim 1 is characterized in that: The armrest (32) is fixed to the rear end of the vehicle plate (31), and the handle (33) is located at the end of the armrest (32).

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