Interlocking device for cabinet door of switch cabinet and switch cabinet

Abstract

The utility model provides an interlocking device for the cabinet door of switch cabinet and switch cabinet, the cabinet body of the switch cabinet comprises a first cabinet door and a second cabinet door, the first cabinet door and the second cabinet door are arranged up and down, the first cabinet door is provided with an electromagnetic lock, the electromagnetic lock is provided with a telescopic spring bolt, the second cabinet door is provided with a first slot hole, and the second cabinet door is provided with a second slot hole. The interlocking device comprises a support plate used for being fixed on a cabinet body; the locking plate is rotatably connected to the supporting plate, the locking plate can rotate between a locking position for locking the second cabinet door and an unlocking position for unlocking the second cabinet door, the spring bolt can move between a first position for locking the locking plate and a second position for unlocking the locking plate, and when the locking plate is located at the locking position, the spring bolt can move between a first position for locking the locking plate and a second position for unlocking the locking plate. The lock plate can extend into the first long hole to prevent the second cabinet door from being opened, the spring bolt can be located at the first position, and under the condition that the spring bolt is located at the second position, the lock plate can rotate from the locking position to the unlocking position and retreat from the first long hole.

Description

Technical Field

[0001] The present invention relates to the field of switch cabinets, and particularly relates to an interlocking device for a cabinet door of a switch cabinet and the switch cabinet. Background Art

[0002] Gas-insulated switchgear is an important equipment in the power system. It is small in size, light in weight, safe, reliable and can adapt to harsh environmental conditions.

[0003] In order to adapt to the situation where there is no cable channel for placing cables in the user's on-site foundation, a rear box is set in the switch cabinet and a part of the bushing is set to extend from the rear side of the gas box, so that the cable can extend from the top of the gas-insulated switch cabinet. Figure 1 The figure shows a schematic diagram of the structure of a switchgear with a rear box. The switchgear includes a cabinet body, which includes a front box body and a rear box body. In the case of a gas-insulated switchgear, the front box body includes a gas box (not shown in the figure), an operating mechanism chamber (not shown in the figure), a cable chamber (not shown in the figure), and a low-voltage chamber 1. The operating mechanism chamber is located in front of the gas box, the low-voltage chamber 1 is located above the operating mechanism, and the cable chamber is located below the operating mechanism chamber and the gas box. The rear box body is arranged on the rear side of the front box body, and a portion of the bushing extends from the rear plate of the gas box and is located in the rear box body. The top plate 21 of the rear box body has a cable outlet 22. In other words, the front box body is located in front of the rear box body. The front box body and the rear box body are relative to each other. In this way, after the cables at the user site are connected to the bushing, they can extend through the cable outlet 22.

[0004] After using the above switch cabinet structure, how to make the bushing in the rear box easy to maintain becomes an urgent problem to be solved. Summary of the Invention

[0005] In view of this, the present invention proposes an interlocking device for a switch cabinet door. The switch cabinet body includes a first cabinet door and a second cabinet door, the first cabinet door and the second cabinet door are arranged vertically, the first cabinet door is provided with an electromagnetic lock, the electromagnetic lock has a retractable lock tongue, and the second cabinet door has a first long hole. The interlocking device includes:

[0006] A support plate, used for fixing to the cabinet;

[0007] A lock plate is rotatably connected to the support plate, the lock plate being capable of rotating between a locking position for locking the second cabinet door and an unlocking position for unlocking the second cabinet door, the lock tongue being capable of moving between a first position for locking the lock plate and a second position for unlocking the lock plate, when the lock plate is in the locked position, the lock plate being capable of extending into the first long hole to prevent the second cabinet door from opening and the lock tongue being capable of being in the first position, when the lock tongue is in the second position, the lock plate being capable of rotating from the locked position to the unlocked position and exiting the first long hole.

[0008] By setting up the interlocking device, the component corresponding to the electromagnetic lock can form the required interlock with the second cabinet door, and the second cabinet door can be opened in a safe state to facilitate the inspection and maintenance of the sleeve in the rear box.

[0009] According to the interlocking device described above, optionally, the support plate has a first through hole, the lock plate has a second through hole, and when the lock tongue is in the first position, the lock tongue extends through the first through hole and the second through hole. In this way, the lock tongue can prevent the lock plate from rotating, thereby interlocking the electromagnetic lock with the interlocking device.

[0010] According to the interlocking device described above, the lock plate may optionally have an arcuate hole, and a fixing pin may be located in the lock plate. When the lock plate rotates between the locked position and the unlocked position, the fixing pin may slide relative to the arcuate hole. The fixing pin may be prevented from falling off the lock plate by the cooperation of a bushing and a washer.

[0011] According to the interlocking device as described above, optionally, it further includes:

[0012] a spacer located between the support plate and the locking plate; and / or

[0013] A reset member, one end of which is fixed to the support plate and the other end of which is connected to the lock plate, wherein the reset member is used to apply a reset force to the lock plate to rotate from the unlocked position to the locked position.

[0014] In this way, when the locking plate rotates, no friction is generated due to contact with the support plate, making the rotation smoother.

[0015] According to the interlocking device as described above, optionally, it further comprises: a fixing member, which is passed through the support plate and the locking plate, and the locking plate rotates around the fixing member.

[0016] According to the interlocking device as described above, optionally, the locking plate includes:

[0017] ontology;

[0018] a first protrusion, wherein when the lock plate is in the locked position, the first protrusion can pass through the first long hole;

[0019] The second protrusion is capable of passing through the second long hole on the first cabinet when the lock plate is located at the locking position. Both the first protrusion and the second protrusion extend along the second direction.

[0020] The second protrusion can serve as a handle, which facilitates the rotation of the locking plate, has a simple structure and low cost.

[0021] According to the interlocking device as described above, optionally, the first protrusion has a wedge-shaped surface.

[0022] According to the interlocking device as described above, optionally, the distance between the second protrusion and the handle of the second cabinet door is 5-10 cm, so that a worker can perform the operation with one hand.

[0023] The utility model also provides a switch cabinet, comprising the interlocking device for the cabinet door of the switch cabinet as described in any one of the above items.

[0024] According to the switch cabinet as described above, optionally, the switch cabinet includes a cabinet body, the cabinet body includes a front box body and a rear box body, the rear box body is provided with the first cabinet door and the second cabinet door, the second cabinet door corresponds to the sleeve located in the rear box body, and the first cabinet door is provided with the electromagnetic lock.

[0025] According to the switch cabinet as described above, optionally, the first cabinet door is fixed to the frame of the cabinet body. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that those skilled in the art will understand the above and other features and advantages of the present invention more clearly. In the accompanying drawings:

[0027] Figure 1 This is a schematic diagram of the structure of a switch cabinet with two doors on the rear cabinet.

[0028] Figure 2 The figure is a schematic structural diagram of an interlocking device for a switch cabinet door according to an embodiment of the present invention.

[0029] Figure 3 Schematic diagram of the exploded structure of the interlocking device of the switch cabinet door.

[0030] Figure 4 This is a schematic diagram of the structure of the interlocking device of the switch cabinet door installed on the cabinet door.

[0031] The accompanying drawings are numerals as follows:

[0032] 1-Low-pressure chamber

[0033] 21-Top plate of rear box

[0034] 22-Cable outlet hole

[0035] 3-First cabinet door

[0036] 31-Door handle

[0037] 32-Second long hole

[0038] 4-Second cabinet door

[0039] 41-first long hole

[0040] 42-Handle

[0041] 5-Electromagnetic lock

[0042] 51-Lock tongue

[0043] 52-lock handle

[0044] 53-Box

[0045] 6-Interlocking device

[0046] 61-Support plate

[0047] 611-first through hole

[0048] 612-Bending part

[0049] 613-Third through hole

[0050] 62-Lock Plate

[0051] 621-Ontology

[0052] 6211-Second through hole

[0053] 6212-arc hole

[0054] 622-first protrusion

[0055] 6221-wedge surface

[0056] 623-Second protrusion

[0057] 63-Fixing pin

[0058] 64-spacer

[0059] 65-Reset piece

[0060] 66-Fixer

[0061] 71-sleeve

[0062] 72-gasket DETAILED DESCRIPTION

[0063] To make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail with reference to the following embodiments. Nouns and pronouns related to people in this patent application are not limited to specific genders.

[0064] In the prior art, the rear door of the switch cabinet is fixed with screws. If you want to inspect the components on the rear box, you need to remove the screws one by one, which is time-consuming and labor-intensive. Based on this, the utility model provides an interlocking device 6 for the switch cabinet door. Under the premise of ensuring the safety of the staff, the rear door of the switch cabinet can be opened, which facilitates the inspection of the components on the rear box.

[0065] like Figure 1 As shown, the rear cabinet of the switch cabinet of the present invention includes a first cabinet door 3 and a second cabinet door 4, which are arranged vertically. The moving direction of the second cabinet door 4 is the first direction D1 shown in the figure. As an exemplary illustration, the cabinet includes a front cabinet and a rear cabinet, and the first cabinet door 3 and the second cabinet door 4 are arranged on the rear cabinet, specifically fixed on the frame. It can be imagined that although Figure 1 In the example shown, the first and second doors 3 and 4 are located in the rear housing. However, in practice, any arrangement of the first and second doors 3 and 4, as well as the interlocking device 6 used therefor, falls within the scope of protection of the present invention. Another reason for using two doors is that the switchgear already has doors, such as those on the front housing. Using the same doors for the rear housing avoids the added complexity of material storage.

[0066] As an exemplary illustration, the first cabinet door 3 is fixed to the frame of the cabinet, for example, it is installed on the frame of the cabinet by screws or by other means, that is, after the first cabinet door 3 is installed on the frame, it does not need to be opened. The door handle 31 on the first cabinet door 3 serves to facilitate assembly, for example, to facilitate lifting by the staff. The second cabinet door 4 corresponds to the sleeve in the rear box, that is, after the second cabinet door 4 is opened, the sleeve in the rear box can be exposed, and accordingly, the air box can be exposed, and the staff can inspect the sleeve. The opening direction of the second cabinet door 4 is as follows Figure 1 The first direction D1 of the second cabinet door 4 is to lift the second cabinet door 4 upwards for a distance. After lifting the second cabinet door 4 for a distance, the second cabinet door 4 can be removed as a whole, that is, moved horizontally.

[0067] like Figure 2 As shown in FIG, it is a structural diagram of the interlocking device 6 for the cabinet door of the switch cabinet. Figure 3As shown in FIG, it is an exploded schematic diagram of the interlocking device 6 for the cabinet door of the switch cabinet. Figure 4 As shown, it is a structural schematic diagram of the interlocking device 6 for the cabinet door of the switch cabinet being installed on the cabinet door.

[0068] The interlocking device 6 for a switch cabinet door includes a support plate 61 and a locking plate 62 .

[0069] Among them, the support plate 61 is used to be fixed to the cabinet body, and the cabinet body can be a part of the cabinet body near the first cabinet door 3, such as the box body 53 of the electromagnetic lock. As long as the support plate 61 can be fixed on the cabinet body, it will not be repeated here. Figure 4 Schematic diagram showing the structure of the support plate 61 fixed to the first cabinet door 3. Figure 3 As shown, the support plate 61 has a bent portion 612, through which the support plate 61 can be fixed to the first cabinet door 3. Specifically, screws or bolts can be passed through the third through holes 613 to fix the support plate 61 to the first cabinet door 3. The support plate 61 can specifically include several parts to form the following: Figure 2 and Figure 3 The structure is formed by assembling two plates or by stamping, and the details are not described in detail.

[0070] The lock plate 62 is rotatably connected to the support plate 61. The lock plate 62 can rotate between a locking position for locking the second cabinet door 4 and an unlocking position for unlocking the second cabinet door 4. The lock tongue 51 can move between a first position for locking the lock plate 62 and a second position for unlocking the lock plate 62. When the lock plate 62 is in the locked position, the lock plate 62 can extend into the first long hole 41 to prevent the second cabinet door 4 from opening and the lock tongue 51 can be in the first position. When the lock tongue 51 is in the second position, the lock plate 62 can rotate from the locked position to the unlocked position and exit the first long hole 41. Figure 4 The lock plate 62 is shown in the locked position and the lock tongue 51 is in the first position.

[0071] like Figures 2 to 4 As shown, the fixing member 66 is provided through the lock plate 62 and the support plate 61, so that the lock plate 62 is rotatably connected to the support plate 61, and the lock plate 62 can rotate around the fixing member 66. In this way, the lock plate 62 can be switched between the locked position and the unlocked position by rotating it.

[0072] The first cabinet door 3 is provided with an electromagnetic lock 5, which has a lock tongue 51. The lock handle 52 can drive the lock tongue 51 to move along the second direction D2 and the opposite direction. When the electromagnetic lock 5 is locked, the lock tongue 51 cannot move. When the electromagnetic lock 5 is not locked, the lock handle 52 can drive the lock tongue 51 to move in the second direction D2 and the opposite direction. Figure 4FIG. 5 is a schematic diagram showing the locking tongue 51 in the first position, which is then moved along the second direction D2 toward the second position. The electromagnetic lock 5 can be interlocked according to actual needs. For example, when the isolating switch in the gas box is closed, the locking tongue 51 of the electromagnetic lock 5 is not allowed to be in the second position, thereby forming an interlock with the second cabinet door 4.

[0073] By providing the interlocking device 6, the component corresponding to the electromagnetic lock 5 can form the required interlock with the second cabinet door 4, and the second cabinet door 4 can be opened in a safe state to facilitate maintenance of the sleeve in the rear box.

[0074] Optionally, the support plate 61 has a first through hole 611, and the lock plate 62 has a second through hole 6211. When the lock tongue 51 is in the first position, the lock tongue 51 passes through the first through hole 611 and the second through hole 6211. In this way, the lock tongue 51 can prevent the lock plate 62 from rotating, so that the electromagnetic lock 5 is interlocked with the interlocking device 6. Optionally, the inner diameter of the first through hole 611 is approximately the same as the outer diameter of the lock tongue 51, for example, there is a clearance fit between the two. The first through hole 611 can provide a certain supporting force and blocking force for the lock tongue 51. If the interlocking device 6 for the cabinet door of the switch cabinet is misoperated, it will contact the lock tongue 51. The lock tongue 51 will be subjected to force and will move. However, because it has not exited the first through hole 611, it will be blocked by the first through hole 611. This can prevent the structure of the electromagnetic lock 5 from being damaged due to the large movement of the lock tongue 51.

[0075] Optionally, the lock plate 62 has an arc-shaped hole 6212, and a fixing pin 63 is located in the lock plate 62. When the lock plate 62 rotates between the locked position and the unlocked position, the fixing pin 63 can slide relative to the arc-shaped hole 6212. The fixing pin 63 can be prevented from falling off the lock plate 62 by the cooperation of the shaft sleeve 71 and the gasket 72. Of course, the fixing pin 63 can also be fixed to the box body 53 of the electromagnetic lock 5 or to the first cabinet door 3. The specific selection can be made according to actual needs and will not be repeated here. When the lock plate 62 rotates, the fixing pin 63 can play a positioning role, which can ensure that the lock plate 62 does not shift during the rotation process, thereby achieving stable interlocking.

[0076] Optionally, the interlocking device 6 further includes a spacer 64, which is located between the support plate 61 and the locking plate 62. Figure 2 As shown, the spacer 64 can be sleeved on the fixing member 66 or the fixing pin 63. The spacer 64 allows a certain gap to be formed between the support plate 61 and the lock plate 62, so that when the lock plate 62 rotates, friction will not be generated due to contact with the support plate 61, making the rotation smoother. Figure 2 Two spacers 64 are shown, which are respectively mounted on the fixing member 66 and the fixing pin 63.

[0077] In order to fix the fixing member 66 and the fixing pin 63, a sleeve 71 and a washer 72 can be provided at one end of the fixing member 66, so that the fixing member 66 and the fixing pin 63 are fixed to the interlocking device 6. The fixing pin 63 or the fixing member 66, the sleeve 71 and the washer 72 can be regarded as a rivet, and the fixing pin 63 or the fixing member 66 can be fixed by a rivet fixing method. Figures 2 to 4 , a fixing member 66 and a fixing pin 63 of the same structure are shown, and the specific structure can be selected according to actual needs.

[0078] Optionally, the interlocking device 6 further includes a reset member 65, one end of which is fixed to the support plate 61 and the other end is connected to the lock plate 62. The reset member 65 is used to apply a reset force to the lock plate 62 to rotate from the unlocked position to the locked position. Figures 2 to 4 As shown, the reset member 65 can be a tension spring. Figure 2 As shown, the extending direction of the restoration member 65 is the second direction D2, which facilitates the application of the restoration force.

[0079] Optionally, the lock plate 62 includes a body 621, a first protrusion 622, and a second protrusion 623. The body 621, the first protrusion 622, and the second protrusion 623 can be integrally formed. The first protrusion 622 can pass through the first elongated hole 41 when the lock plate 62 is in the locked position. The second protrusion 623 can pass through the second elongated hole 32 on the first cabinet when the lock plate 62 is in the locked position. The first protrusion 622 and the second protrusion 623 both extend along the second direction D2. The presence of the second protrusion 623 can function as a handle, which facilitates the rotation of the lock plate 62 and has a simple structure and low cost. Of course, the rotation of the lock plate 62 can also be triggered by other means, such as electrically triggering the rotation of the lock plate 62, or by other components driving the rotation of the lock plate 62, which will not be described in detail here.

[0080] Optionally, the first protrusion 622 has a wedge-shaped surface 6221. Thus, when the second cabinet door 4 moves from an open state to a closed state, the second cabinet door 4 first closes, and then moves in a direction opposite to the first direction D1, i.e., downward. During this process, the presence of the wedge-shaped surface 6221 causes the lock plate 62 to rotate. As the second cabinet door 4 continues to move, due to the action of the elastic member, the first protrusion 622 can enter the first elongated hole 41, thereby locking the second cabinet door 4. In other words, the second cabinet door 4 cannot move along the first direction D1 to a position where it can open horizontally. It should be noted that the inability to move along the first direction D1 to an unlocked position here refers to the inability to move into position in the first direction D1 to open the second cabinet door 4. If the length of the first elongated hole 41 is sufficiently long, the second cabinet door 4 can move a certain distance in the first direction D1, but cannot reach a position where it can open horizontally, and thus cannot open the second cabinet door 4.

[0081] Optionally, the distance between the second protrusion 623 and the handle of the second cabinet door is 5-10 cm, so that a worker can single-handedly press the second protrusion 623 in the direction opposite to the first direction D1 and lift the second cabinet door 4 upward along the first direction D1 via the handle of the second cabinet door 4. As an example, the handle 42 of the second cabinet door 4 can be implemented by a groove on the second cabinet door 42, and the worker's hand can be inserted into the groove to lift the second cabinet door 4 upward. In this way, a worker can complete such an operation by one person, saving manpower.

[0082] The working principle of the interlocking device 6 for a switch cabinet door of the present invention is described below using specific examples.

[0083] Interlocking device 6 moves from locked position to unlocked position:

[0084] Figure 4 It shows a structural diagram in which the second cabinet door 4 is in the closed position, the lock plate 62 is in the locked position, and the lock tongue 51 is in the first position.

[0085] When the lock tongue 51 of the electromagnetic lock 5 is in the first position, Figure 4As shown, the lock plate 62 is provided through corresponding holes in the support plate 61 and the lock plate 62. At this point, the lock plate 62 cannot rotate and extends into the first slot 41 of the second cabinet door 4, preventing the second cabinet door 4 from moving in the first direction D1, thereby preventing the second cabinet door 4 from opening. As the lock tongue 51 of the electromagnetic lock 5 moves from the first position to the second position, it gradually withdraws from the support plate 61 and the lock plate 62. Without the obstruction of the lock tongue 51, a worker can move the lock plate 62 from the locked position to the unlocked position by actuating the second protrusion 623. The lock plate 62 gradually withdraws from the first slot 41, thus no longer obstructing the movement of the second cabinet door 4 in the first direction D1. After the lock plate 62 reaches the unlocked position, the worker lifts the second cabinet door 4 upward and then opens it horizontally, allowing the worker to inspect the exposed casing. When the second cabinet door 4 moves to a position where it can open horizontally, the second protrusion 623 can be released. Due to the obstruction of the second cabinet door 4, the lock plate 62 will not move to the locked position. When the second cabinet door 4 is opened in a horizontal manner, the locking plate 62 returns to the locked position due to the action of the elastic member. Figure 4 Position shown.

[0086] Interlocking device 6 moves from unlocked position to locked position:

[0087] After the second cabinet door 4 is closed, the staff member presses the second cabinet door 4 downward to the closed position. During this process, due to the presence of the wedge-shaped surface 6221, the second cabinet door 4 pushes the first protrusion 622 to rotate the lock plate 62 until the first elongated hole 41 on the second cabinet door 4 corresponds to the first protrusion 622. The first protrusion 622 enters the first elongated hole 41 under the action of the elastic member, and the second cabinet door 4 reaches the closed position. At this time, the lock tongue 51 of the electromagnetic lock 5 can penetrate the support plate 61 and the lock plate 62, that is, the electromagnetic lock 5 can now be locked. Due to the action of the lock tongue 51, the lock plate 62 cannot rotate, and thus the second cabinet door 4 cannot reach the position where it can be opened horizontally.

[0088] The present invention also includes a switch cabinet comprising an interlocking device 6 for a switch cabinet door according to any of the aforementioned examples. The switch cabinet comprises a cabinet body, which includes a front cabinet body and a rear cabinet body. The rear cabinet body is provided with a first cabinet door 3 and a second cabinet door 4. The second cabinet door 4 corresponds to a bushing located in the rear cabinet body. The first cabinet door 3 is provided with an electromagnetic lock 5. Optionally, the first cabinet door 3 is fixed to the cabinet body frame, specifically, by screws.

[0089] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An interlocking device (6) for a switch cabinet door, wherein the switch cabinet body comprises a first cabinet door (3) and a second cabinet door (4), wherein the first cabinet door (3) and the second cabinet door (4) are arranged vertically, wherein the first cabinet door (3) is provided with a second long hole (32), and the electromagnetic lock (5) has a retractable lock tongue (51), characterized in that: The second cabinet door (4) has a first long hole (41), and the interlocking device (6) comprises: A support plate (61) for fixing to the cabinet; A lock plate (62) is rotatably connected to the support plate (61); the lock plate (62) is capable of rotating between a locking position for locking the second cabinet door (4) and an unlocking position for unlocking the second cabinet door (4); the lock tongue (51) is capable of moving between a first position for locking the lock plate (62) and a second position for unlocking the lock plate (62); when the lock plate (62) is in the locking position, the lock plate (62) can extend into the first long hole (41) to prevent the second cabinet door (4) from opening and the lock tongue (51) can be in the first position; when the lock tongue (51) is in the second position, the lock plate (62) can rotate from the locking position to the unlocking position and exit the first long hole (41).

2. The interlocking device (6) according to claim 1, characterized in that The support plate (61) has a first through hole (611), the lock plate (62) has a second through hole (6211), and when the lock tongue (51) is located at the first position, the lock tongue (51) passes through the first through hole (611) and the second through hole (6211).

3. The interlocking device (6) according to claim 1, characterized in that The locking plate (62) has an arc-shaped hole (6212), and a fixing pin (63) is located in the locking plate (62). When the locking plate (62) rotates between the locking position and the unlocking position, the fixing pin (63) can slide relative to the arc-shaped hole (6212).

4. The interlocking device (6) according to claim 1, characterized in that Also includes: a spacer (64) located between the support plate (61) and the locking plate (62); and / or A reset member (65) has one end fixed to the support plate (61) and the other end connected to the lock plate (62). The reset member (65) is used to apply a reset force to the lock plate (62) to rotate from the unlocked position to the locked position.

5. The interlocking device (6) according to claim 1, characterized in that Also includes: A fixing member (66) is provided through the support plate (61) and the locking plate (62), and the locking plate (62) rotates around the fixing member (66).

6. The interlocking device (6) according to any one of claims 1 to 5, characterized in that: The locking plate (62) comprises: Ontology(621); a first protrusion (622), wherein when the locking plate (62) is located at the locking position, the first protrusion (622) is capable of passing through the first long hole (41); The second protrusion (623) is capable of passing through the second long hole (32) on the first cabinet door (3) when the locking plate (62) is located in the locking position, and the first protrusion (622) and the second protrusion (623) both extend along the second direction.

7. The interlocking device (6) according to claim 6, characterized in that The first protrusion (622) has a wedge-shaped surface (6221); and / or The distance between the second protrusion (623) and the handle (42) of the second cabinet door (4) is 5-10 centimeters.

8. Switchgear, characterized in that, An interlocking device (6) for a cabinet door of a switch cabinet comprising any one of claims 1-7.

9. The switch cabinet according to claim 8, characterized in that: The switch cabinet comprises a cabinet body, the cabinet body comprises a front box body and a rear box body, the rear box body is provided with the first cabinet door (3) and the second cabinet door (4), the second cabinet door (4) corresponds to the sleeve located in the rear box body, and the first cabinet door (3) is provided with the electromagnetic lock (5).

10. The switch cabinet according to claim 9, characterized in that: The first cabinet door (3) is fixed on the frame of the cabinet body.

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