Switch cabinet body and switch cabinet thereof

Abstract

The invention relates to the technical field of switch cabinets, and discloses a switch cabinet body and a switch cabinet thereof.The two sides of the switch cabinet body are provided with side boxes used for containing an air storage tank, and the middle of the front end of a sealing door is connected with a protection box; an air outlet pipe at the top of the air storage tank extends into the switch cabinet body and is connected with a valve mechanism, the driving mechanism also opens the valve mechanism, and after the circuit breaker enters the protection box, the valve mechanism at the rear end of the sealing door seals the circuit breaker in the protection box. The circuit breaker is driven by the driving mechanism on the track to enter the protection box along the track, the valve mechanism at the rear end of the sealing door seals the circuit breaker in the protection box, the circuit breaker can be far away from the switch cabinet body, the circuit breaker is sealed in the protection box, and safety protection of the circuit breaker is guaranteed. The valve mechanism is opened, so that carbon dioxide in the gas storage tank enters the switch cabinet body through the gas outlet pipe, the carbon dioxide is quickly diffused into each electrical equipment mounting chamber, fire extinguishing is realized, and the safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of switch cabinets, and in particular to a switch cabinet body and a switch cabinet thereof. Background Art

[0002] Switchgear is a type of electrical equipment whose primary function is to open and close, control, and protect electrical equipment during power generation, transmission, distribution, and energy conversion in power systems. The electrical equipment within a switchgear primarily consists of disconnectors, load switches, operating mechanisms, transformers, and various protective components. Circuit breakers are used to energize each electrical device.

[0003] When electrical equipment or wires in a switch cabinet catch fire due to overvoltage operation, an alarm device is usually installed. However, it is impossible to achieve power-off protection and synchronous fire extinguishing of each electrical equipment. The protection of electrical equipment is only achieved by installing each electrical equipment in a different electrical equipment installation room. This cannot fundamentally achieve safety protection in the event of a switch cabinet fire. For this reason, we have introduced a switch cabinet body and switch cabinet thereof. Summary of the Invention

[0004] The object of the present invention is to provide a switch cabinet body and a switch cabinet thereof, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A switch cabinet body comprises a switch cabinet body, wherein side boxes for placing gas storage tanks are provided on both sides of the switch cabinet body, a sealing door is hingedly connected to the front end of the switch cabinet body, and a protection box is connected to the middle of the front end of the sealing door; A circuit breaker is slidably connected between the first guide rails on both side walls of the middle part of the switch cabinet body, and second guide rails are provided on both side walls of the middle part of the protection box. When the sealing door is closed, the second guide rails are connected to the corresponding first guide rails to form a track; The outlet pipe on the top of the gas storage tank extends into the switch cabinet body and is connected to a valve mechanism. The circuit breaker is driven by the driving mechanism on the track and enters the protection box along the track. At the same time, the driving mechanism also opens the valve mechanism, allowing the carbon dioxide in the gas storage tank to enter the switch cabinet body through the outlet pipe; After the circuit breaker enters the protection box, the valve mechanism at the rear end of the sealing door seals the circuit breaker in the protection box.

[0006] Preferably, a static contact box is fixed to the rear between the two groups of first guide rails, a static contact hole is provided on the static contact box, and a power plug-in column inserted into the static contact hole is provided at the rear end of the circuit breaker.

[0007] An L-shaped slide is fixed on both sides of the circuit breaker. A slot is provided on the front side of the first guide rail, and an insert is provided on the rear side of the second guide rail. After the sealing door is closed, the insert is inserted into the corresponding slot, and the L-shaped slide is slidably connected to the track.

[0008] Preferably, the driving mechanism includes a first motor at the bottom of the first guide rail, a gear mechanism driven by the first motor, a second motor at the bottom of the second guide rail, and a second driving gear driven by the second motor; The gear mechanism includes a first driving gear provided inside the first guide rail and a driven gear meshing with the first driving gear. The first rotating shaft at the output end of the first motor is connected to the middle of the first driving gear. The bottom of the second rotating shaft fixed to the middle of the driven gear extends out of the first guide rail and is fixed with a winding wheel. The rear side of the bottom of the first guide rail is movably connected to a guide wheel through a connecting plate, and the rope on the winding wheel passes through the bottom of the guide wheel and then extends out through the upper end of the first guide rail; The inner sides of the first driving gear and the second driving gear extend out through the inner walls of the first guide rail and the second guide rail respectively and then engage with the transverse rack on the L-shaped slide.

[0009] Preferably, the valve mechanism includes a sealing disk and an end cap screwed to the inner end of the outlet pipe, and a sealing ring is sleeved on the outer side of the inner end of the outlet pipe, and the sealing ring is located inside the end cap; The pin rod fixed in the middle of the sealing disk extends into the inside of the air outlet pipe through the circular hole in the middle of the end cover and is then screwed to fix the limit disk. A spring is sleeved on the pin rod, and both ends of the spring are located between the limit disk and the end cover. The end cover is also provided with an annular air-permeable net located outside the circular hole, and an inclined block located outside the annular air-permeable net is fixed on the end cover, and protrusions are fixed at the upper and lower ends of the sealing disk; One end of the rope extending from the upper end of the first guide rail is fixed to the side of the upper protrusion, and a limiting groove is provided in the middle of the side of the sealing disk for the rope to pass through.

[0010] Preferably, the valve mechanism includes a push switch fixed to the front end of the interior of the protection box, vertical seats fixed to both sides of the rear end of the sealing door, a third motor fixed to the rear end of the middle part of the vertical seats, and an upper door plate and a lower door plate slidably connected between the two sets of vertical seats; The third motor is electrically connected to the push switch, and the first vertical rack is fixed to both sides of the top of the upper door panel through connecting ears, and the second vertical rack is fixed to both sides of the lower door panel. The output end of the third motor extends into the interior of the vertical seat and is connected to the valve drive gear, which is engaged with the corresponding first vertical rack and second vertical rack.

[0011] Preferably, there are card slots on both sides of the lower end of the upper door panel. After the circuit breaker enters the protection box, the push switch is pressed to energize the third motor. The third motor drives the rotation of the valve drive gear to make the upper door panel and the lower door panel approach each other and seal the opening at the rear end of the protection box. At this time, the second guide rail is stuck in the card slot.

[0012] In addition, in order to achieve the above-mentioned purpose, the present invention also provides a switch cabinet, including the switch cabinet body.

[0013] Compared with the prior art, the beneficial effect of the present invention is that the circuit breaker of the present invention is driven by the driving mechanism on the track to enter the protection box along the track, so that the valve mechanism at the rear end of the sealing door seals the circuit breaker in the protection box. In this way, the circuit breaker can be kept away from the switch cabinet body and the circuit breaker is sealed inside the protection box, ensuring the safety protection of the circuit breaker.

[0014] At the same time, the drive mechanism also opens the valve mechanism, allowing the carbon dioxide in the gas tank to enter the switch cabinet through the outlet pipe. The carbon dioxide quickly diffuses to each electrical equipment installation room, achieving fire extinguishing and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the exploded structure of the overall assembly of the present invention; Figure 2 This is a schematic diagram of the exploded structure of the circuit breaker, the first guide rail and the second guide rail connected to each other in the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the connection between the gear mechanism, guide wheel, rope and sealing disk of the present invention; Figure 4 This is a schematic diagram of the exploded structure of the drive mechanism and the first guide rail of the present invention after being assembled and connected to the valve mechanism; Figure 5 This is a schematic diagram of the exploded structure of the assembly of the limit plate, spring, end cover and sealing plate of the present invention; Figure 6 This is a schematic cross-sectional view of the present invention when the sealing disc seals the annular air-permeable net under the action of the spring force; Figure 7 This is a schematic cross-sectional view of the present invention when the protrusion slides onto the inclined surface block and leaks out the annular breathable net; Figure 8 This is a schematic diagram of the exploded structure of the connection between the first vertical rack, the second vertical rack and the valve drive gear of the present invention; Figure 9 This is a schematic diagram of the three-dimensional structure of the upper door panel and the lower door panel of the present invention when they are closed; Figure 10 This is a schematic diagram of the three-dimensional structure of the circuit breaker of the present invention installed in the switch cabinet body; Figure 11 This is a schematic cross-sectional view of the circuit breaker of the present invention installed in the switch cabinet body; Figure 12 This is a schematic cross-sectional view of the circuit breaker of the present invention after entering the protection box.

[0016] Figure: 1, static contact box; 101, static contact hole; 2, first guide rail; 201, slot; 3, connecting plate; 4, guide wheel; 5, rope; 6, take-up wheel; 7, driven gear; 8, first drive gear; 9, first motor; 10, first rotating shaft; 11, second rotating shaft; 12, sealing disk; 121, bump; 122, limit groove; 13, pin; 14, air tank; 15, air outlet pipe; 16, end cover; 161, annular air mesh; 162, inclined block; 163, round hole; 17, spring; 18, limit disk; 19, sealing ring ;20. Circuit breaker;21. Horizontal rack;22. L-shaped slide;23. Power plug-in column;24. Side box;25. Switch cabinet body;251. Shelf;26. Upper door panel;261. Connecting ear;262. First vertical rack;263. Card slot;27. Sealing door;28. Vertical seat;29. Protective box;30. Second motor;31. Second guide rail;32. Lower door panel;321. Second vertical rack;33. Insert block;34. Third motor;35. Valve drive gear;36. Press switch;37. Second drive gear. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] See also Figure 1-12 , the present invention provides a technical solution: Example 1:

[0019] A switch cabinet body includes a switch cabinet body 25. The switch cabinet body 25 has several groups of electrical equipment installation rooms formed by layer plates 251 inside. Side boxes 24 are provided on both sides of the switch cabinet body 25 for accommodating gas storage tanks 14. The gas storage tanks 14 are high-pressure gas storage tanks, so that carbon dioxide inside the gas storage tanks can be quickly ejected into the switch cabinet body 25 when flowing out through the gas outlet pipe 15. A sealed door 27 is hinged at the front end of the switch cabinet body 25. A protection box 29 is connected to the middle of the front end of the sealed door 27. The rear end of the protection box 29 is provided with an opening located on the sealed door 27. The circuit breaker 20 is slidably connected between the first guide rails 2 on the two side walls of the middle part of the switch cabinet body 25. A static contact box 1 is also fixed to the rear between the two sets of first guide rails 2. The static contact box 1 is also provided with a static contact hole 101. The rear end of the circuit breaker 20 is provided with a power plug post 23 inserted into the static contact hole 101.

[0020] Open the sealed door 27 and install the circuit breaker 20 on the left and right sets of first guide rails 2, so that the L-shaped slide 22 on the circuit breaker 20 slides onto the first guide rails 2. Then push the circuit breaker 20 backward until the power plug 23 is inserted into the static contact hole 101, so that all electrical equipment in the electrical equipment installation room are energized through the circuit breaker 20. Finally, close the sealed door 27. The protection box 29 is provided with second guide rails 31 on both sides of the middle part. When the sealing door 27 is closed, the second guide rails 31 are connected to the corresponding first guide rails 2 to form a track. An L-shaped slide 22 is fixed on both sides of the circuit breaker 20. A slot 201 is provided on the front side of the first guide rail 2, and an insert block 33 is provided on the rear side of the second guide rail 31. After the sealing door 27 is closed, the insert block 33 is inserted into the corresponding slot 201, and the L-shaped slide 22 is slidably connected to the rail.

[0021] The outlet pipe 15 at the top of the gas storage tank 14 extends into the switch cabinet body 25 and is connected to a valve mechanism. Driven by the driving mechanism on the track, the circuit breaker 20 enters the protection box 29 along the track. At the same time, the driving mechanism also opens the valve mechanism, allowing the carbon dioxide in the gas storage tank 14 to enter the switch cabinet body 25 through the outlet pipe 15. The driving mechanism includes a first motor 9 at the bottom of the first guide rail 2, a gear mechanism driven by the first motor 9, a second motor 30 at the bottom of the second guide rail 31, and a second driving gear 37 driven by the second motor 30; The gear mechanism includes a first driving gear 8 provided inside the first guide rail 2 and a driven gear 7 meshing with the first driving gear 8. A first rotating shaft 10 at the output end of the first motor 9 is connected to the middle of the first driving gear 8. A second rotating shaft 11 fixed to the middle of the driven gear 7 extends out of the first guide rail 2 and is fixed with a winding wheel 6. The bottom rear side of the first guide rail 2 is movably connected to a guide wheel 4 through a connecting plate 3. The rope 5 on the winding wheel 6 passes through the bottom of the guide wheel 4 and then extends out through the upper end of the first guide rail 2. The inner sides of the first driving gear 8 and the second driving gear 37 extend through the inner walls of the first guide rail 2 and the second guide rail 31 respectively and then engage with the transverse rack 21 on the L-shaped slide 22 .

[0022] The valve mechanism includes a sealing disc 12 and an end cap 16 screwed to the inner end of the outlet pipe 15. A sealing ring 19 is sleeved on the outer side of the inner end of the outlet pipe 15. The sealing ring 19 is located inside the end cap 16. The pin 13 fixed in the middle of the sealing disk 12 extends into the interior of the air outlet pipe 15 through the circular hole 163 in the middle of the end cover 16 and is then screwed and fixed to the limit disk 18. The spring 17 is sleeved on the pin 13, and the two ends of the spring 17 are located between the limit disk 18 and the end cover 16. The end cap 16 is further provided with an annular air-permeable net 161 located outside the circular hole 163 , and an inclined surface block 162 located outside the annular air-permeable net 161 is fixed to the end cap 16 . The sealing disc 12 is further provided with protrusions 121 fixed at the upper and lower ends. The end of the rope 5 extending from the upper end of the first guide rail 2 is fixed to the side of the upper protrusion 121, and a limiting groove 122 is provided in the middle of the side of the sealing disk 12 for the rope 5 to pass through (such as Figure 3 shown).

[0023] Under the elastic force of the spring 17 on the limit plate 18, the limit plate 18 pulls the sealing plate 12 through the pin 13 until the sealing plate 12 is tightly attached to the inner end surface of the end cover 16, so that the sealing plate 12 seals the annular air permeable net 161 (such as Figure 6 As shown in the state), the carbon dioxide entering the outlet pipe 15 cannot be ejected through the outlet pipe 15. At this time, the protrusion 121 has not yet slid onto the inclined block 162.

[0024] When the rope 5 pulls the upper protrusion 121, the sealing disk 12 rotates until the protrusion 121 slides onto the inclined block 162. At this time, the sealing disk 12 is no longer tightly attached to the inner end surface of the end cover 16, and the annular air mesh 161 leaks out (such as Figure 7 As shown in the state), the carbon dioxide entering the outlet pipe 15 is then ejected into the switch cabinet body 25 through the annular air permeable net 161, and the carbon dioxide quickly diffuses into the various electrical equipment installation rooms to achieve fire extinguishing.

[0025] After the circuit breaker 20 enters the protection box 29 , the shutter mechanism at the rear end of the sealing door 27 seals the circuit breaker 20 in the protection box 29 .

[0026] The valve mechanism includes a push switch 36 fixed to the front end of the protection box 29, vertical seats 28 fixed to both sides of the rear end of the sealing door 27, a third motor 34 fixed to the middle and rear ends of the vertical seats 28, and an upper door panel 26 and a lower door panel 32 slidingly connected between the two sets of vertical seats 28; The third motor 34 is electrically connected to the push switch 36. The first vertical rack 262 is fixed to both sides of the top of the upper door panel 26 through the connecting ears 261. The second vertical rack 321 is fixed to both sides of the lower door panel 32. The output end of the third motor 34 extends into the interior of the vertical seat 28 and is connected to the valve drive gear 35. The valve drive gear 35 is engaged with the corresponding first vertical rack 262 and second vertical rack 321.

[0027] The upper door panel 26 is further provided with card slots 263 on both sides of the lower end. After the circuit breaker 20 enters the protection box 29, the push switch 36 is pressed, so that the third motor 34 is powered on. The third motor 34 drives the rotation of the valve drive gear 35 to realize the upper door panel 26 and the lower door panel 32 approaching each other and sealing the opening at the rear end of the protection box 29. At this time, the second guide rail 31 is stuck in the card slot 263. Such a setting can prevent the upper door panel 26 and the lower door panel 32 from being unable to close and seal due to the obstruction of the second guide rail 31.

[0028] The first motor 9 and the second motor 30 are both controlled by a PLC controller. A smoke sensor (model JTY-GD-T12) and a temperature sensor (model ARTM-8 8-way PT temperature sensor), which are electrically connected to the PLC controller, are installed inside the switch cabinet body 25. The smoke sensor is used to detect the smoke concentration inside the switch cabinet body 25, and the temperature sensor is used to detect the temperature inside the switch cabinet body 25. When a fire occurs in electrical equipment or wires inside the switch cabinet body 25 due to overvoltage operation, the smoke detector detects that the smoke concentration inside the switch cabinet body 25 exceeds a safety threshold, or the temperature sensor detects that the temperature inside the switch cabinet body 25 exceeds a safety threshold, the PLC controller immediately controls the first motor 9 and the second motor 30 to operate, so that the circuit breaker 20 enters the protection box 29, the circuit breaker 20 moves away from the switch cabinet body 25, and the power plug 23 is separated from the static contact hole 101, so that all electrical equipment inside the electrical equipment installation room is powered off; In addition, in order to achieve the above-mentioned purpose, the present invention also provides a switch cabinet, including the switch cabinet body.

[0029] Specifically, when in use, the first motor 9 and the second motor 30 work synchronously, the first motor 9 drives the first drive gear 8 to rotate, and the second motor 30 drives the second drive gear 37 to rotate; The first drive gear 8 and the second drive gear 37 drive the L-shaped slide 22 to move forward along the first guide rail 2 via the transverse rack 21 on the L-shaped slide 22. When the transverse rack 21 leaves the first drive gear 8 (the PLC controller stops the operation of the first motor 9), the L-shaped slide 22 slides to the second guide rail 31. The second drive gear 37 still engages and drives the transverse rack 21, continuing to move the circuit breaker 20 forward until the circuit breaker 20 moves into the protection box 29. Subsequently, the PLC controller stops the operation of the second motor 30. The circuit breaker 20 enters the protection box 29, the circuit breaker 20 is away from the switch cabinet body 25, and the power plug post 23 is separated from the static contact hole 101, so that all electrical equipment in the electrical equipment installation room are powered off; like Figure 3 As shown, when the first driving gear 8 rotates, the first driving gear 8 drives the reel 6 to rotate through the driven gear 7, so that the reel 6 reels the rope 5. At this time, when the rope 5 pulls the upper protrusion 121, the sealing disk 12 rotates until the protrusion 121 slides onto the inclined block 162. At this time, the sealing disk 12 is no longer tightly attached to the inner end surface of the end cover 16, and the annular air permeable net 161 leaks out (as shown in FIG. Figure 7 As shown in the state), the carbon dioxide entering the outlet pipe 15 is then ejected into the switch cabinet body 25 through the annular air permeable net 161, and the carbon dioxide quickly diffuses into the various electrical equipment installation rooms to achieve fire extinguishing.

[0030] After the circuit breaker 20 enters the protection box 29, the front end of the circuit breaker 20 abuts against the push switch 36. Pressing the push switch 36 energizes the third motor 34, which drives the valve drive gear 35 to rotate, so that the upper door plate 26 and the lower door plate 32 move closer to each other and seal the opening at the rear end of the protection box 29. At this time, the second guide rail 31 is stuck in the slot 263 (as shown in FIG. Figure 9 shown).

[0031] The upper door panel 26 and the lower door panel 32 are closed, sealing the circuit breaker 20 inside the protection box 29 so that the circuit breaker 20 is away from the switch cabinet body 25 .

[0032] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A switch cabinet body, comprising a switch cabinet body, characterized in that: Side boxes for placing gas storage tanks are provided on both sides of the switch cabinet body, a sealed door is hinged at the front end of the switch cabinet body, and a protection box is connected to the middle of the front end of the sealed door; A circuit breaker is slidably connected between the first guide rails on the two side walls of the middle part of the switch cabinet body, and second guide rails are provided on the two side walls of the middle part of the protection box. After the sealing door is closed, the second guide rails are connected with the corresponding first guide rails to form a track; The outlet pipe on the top of the gas storage tank extends into the switch cabinet body and is connected to a valve mechanism. The circuit breaker enters the protection box along the track under the drive mechanism on the track. At the same time, the drive mechanism also opens the valve mechanism, so that the carbon dioxide in the gas storage tank enters the switch cabinet body through the outlet pipe; After the circuit breaker enters the protection box, the valve mechanism at the rear end of the sealing door seals the circuit breaker in the protection box.

2. A switch cabinet body according to claim 1, characterized in that: A static contact box is fixed at the rear between the two groups of first guide rails, a static contact hole is provided on the static contact box, and a power plug-in column inserted into the static contact hole is provided at the rear end of the circuit breaker.

3. A switch cabinet body according to claim 2, characterized in that: L-shaped slides are fixed on both sides of the circuit breaker, a slot is provided on the front side of the first guide rail, and an insert block is provided on the rear side of the second guide rail. After the sealing door is closed, the insert block is inserted into the corresponding slot, and the L-shaped slide is slidably connected to the track.

4. A switch cabinet body according to claim 3, characterized in that: The driving mechanism includes a first motor at the bottom of the first guide rail, a gear mechanism driven by the first motor, a second motor at the bottom of the second guide rail, and a second driving gear driven by the second motor; The gear mechanism includes a first driving gear disposed inside the first guide rail and a driven gear meshing with the first driving gear, a first rotating shaft at the output end of the first motor is connected to the middle of the first driving gear, and a winding wheel is fixed to the bottom of the second rotating shaft fixed to the middle of the driven gear after extending out of the first guide rail; The rear side of the bottom of the first guide rail is movably connected to a guide wheel through a connecting plate, and the rope on the winding wheel passes through the bottom of the guide wheel and then extends out through the upper end of the first guide rail; The inner sides of the first driving gear and the second driving gear extend out through the inner walls of the first guide rail and the second guide rail respectively and then mesh with the transverse rack on the L-shaped slide.

5. A switch cabinet body according to claim 4, characterized in that: The valve mechanism comprises a sealing disk and an end cap screwed to the inner end of the outlet pipe, a sealing ring is sleeved on the outer side of the inner end of the outlet pipe, and the sealing ring is located inside the end cap; The pin rod fixed in the middle of the sealing disk extends into the inside of the air outlet pipe through the circular hole in the middle of the end cover and is then screwed and fixed to the limit disk. A spring is sleeved on the pin rod, and both ends of the spring are located between the limit disk and the end cover. The end cover is also provided with an annular air-permeable net located outside the circular hole, and an inclined surface block located outside the annular air-permeable net is fixed on the end cover, and convex blocks are fixed at the upper and lower ends of the sealing disk; One end of the rope extending through the upper end of the first guide rail is fixed to the side of the upper protrusion, and a limiting groove is provided in the middle of the side of the sealing disk, and the limiting groove is used for the rope to pass through.

6. A switch cabinet body according to claim 1, characterized in that: The valve mechanism includes a push switch fixed to the front end of the protection box, vertical seats fixed to both sides of the rear end of the sealing door, a third motor fixed to the rear end of the middle part of the vertical seat, and an upper door plate and a lower door plate slidably connected between the two sets of vertical seats; The third motor is electrically connected to the push switch, and the first vertical rack is fixed to both sides of the top of the upper door panel through connecting ears, and the second vertical rack is fixed to both sides of the lower door panel. The output end of the third motor extends into the vertical seat and is connected to the valve drive gear, and the valve drive gear is meshed with the corresponding first vertical rack and second vertical rack.

7. A switch cabinet body according to claim 6, characterized in that: The lower end of the upper door panel is also provided with card slots on both sides. After the circuit breaker enters the protection box, the push switch is pressed to energize the third motor. The third motor drives the rotation of the valve drive gear to make the upper door panel and the lower door panel approach each other and seal the opening at the rear end of the protection box. At this time, the second guide rail is stuck in the card slot.

8. A switch cabinet, characterized in that: It comprises a switch cabinet body as claimed in any one of claims 1 to 7.

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