CN209929836U - Interlocking mechanism of draw-out type switch cabinet and draw-out type switch cabinet - Google Patents

Abstract

The interlocking mechanism of the draw-out switch cabinet comprises a base body (10), a linkage piece (30), a sliding piece (40) and a locking piece (80). The linkage is movably coupled to the base in a first direction (D1). The slider is movably coupled to the base in a second direction (D2). The slider has a linking hole (41). The linkage piece is continuously provided with a first neck part (34) and a second neck part (32) along the first direction, and can penetrate through the linkage hole through the first neck part and the second neck part. The linkage hole is continuously provided with a first hole section (411) and a second hole section (412) along the second direction. When the second neck wears to establish the linkage hole, the second neck is limited in the second hole section, and the slider can prevent latch fitting unblock key. When first neck wears to establish the linkage hole, first neck can slide in first hole section and second hole section to can slide in first hole section and avoid the latch fitting to the slider. The mechanism has simple structure. In addition, a draw-out type switch cabinet is also provided.

Description

Interlocking mechanism of draw-out type switch cabinet and draw-out type switch cabinet

Technical Field

The utility model relates to an interlocking device, especially an interlocking device of pull-out type cubical switchboard reaches pull-out type cubical switchboard including it.

Background

The draw-out switch cabinet comprises a chassis vehicle, wherein a lead screw is arranged on the chassis vehicle, and the lead screw can be rotated to drive electrical equipment arranged on the chassis vehicle to move between a test position and a working position. The electrical equipment is, for example, a circuit breaker, a voltage transformer, or the like. To avoid the safety risk caused by the misoperation of an operator when the electrical equipment is in a working position, a program lock is often used at present. The program lock (or called mechanical program lock) uses the key to transmit or replace with the operation program to achieve the requirement of successive unlocking operation; the key transmission device has the greatest advantage that the key transmission is not limited by distance, so that the application range is wide. The interlocking mechanism of the withdrawable switch cabinet can lock the key of the program lock and prevent the key from being pulled out when the electrical equipment is in the working position, so that the key cannot be used for opening another lock, such as a door lock of the switch cabinet, and therefore dangerous operation can be avoided. The interlocking mechanism used at present is complex in structure and not easy to install and maintain.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an interlocking device of pull-out type cubical switchboard, its simple structure, easy to install and maintain.

Another object of the present invention is to provide a draw-out type switch cabinet, which has a simple structure of the interlocking mechanism and is easy to install and maintain.

The utility model provides an interlocking device of pull-out type cubical switchboard, it includes a base member, a linkage, a slider and a latch fitting. The linkage member is movably coupled to the base member in a first direction of the base member and in a reverse direction of the first direction. The linkage member is provided with a first neck portion and a second neck portion in series along the first direction. The sliding member is movably connected to the base in a second direction and a reverse direction. The slider has a linking hole provided therethrough in the first direction. The linkage hole is continuously provided with a first hole section and a second hole section along the second direction. The linkage piece can wear to locate the linkage hole through first neck and second neck. The latch is connected to the base member and the latch is capable of unlocking a key. Under the condition of linkage hole is worn to locate at the second neck, the second neck is restricted to slide in the second hole section, and the slider can prevent latch fitting unblock key through leaning on the latch fitting. Under the condition of linkage hole is worn to locate at first neck, first neck can slide in first hole section and second hole section to under the condition that is located first hole section, the slider can slide to the position of avoiding the latch fitting.

The interlocking mechanism is simple in structure and therefore easy to install and maintain.

In another exemplary embodiment of the interlocking mechanism of the withdrawable switchgear cabinet, the aperture of the first bore section is smaller than the aperture of the second bore section, the width of the first neck section is smaller than or equal to the aperture of the first bore section, and the width of the second neck section is larger than the aperture of the first bore section and smaller than or equal to the aperture of the second bore section.

In a further exemplary embodiment of the interlocking mechanism of the withdrawable switchgear cabinet, the base body has a sliding chamber extending in the first direction. The linkage piece comprises a sliding part and a linkage part. The sliding part is at least partially positioned in the sliding cavity and comprises a second neck part, and the sliding part can be connected with the base body in a sliding mode along the first direction and the reverse direction. The linkage portion comprises a first neck portion and is connected with one end, away from the sliding cavity, of the sliding portion. The structural stability is good.

In a further exemplary embodiment of the interlocking mechanism of the withdrawable switchgear cabinet, the sliding part and the interlocking part are detachably connected. The base body includes a base plate and a connecting member. The slider is movably connected with the substrate. The connecting piece is positioned on one side of the substrate and is detachably connected with the substrate. The sliding cavity is arranged on the connecting piece, and a first opening communicated with the sliding cavity is arranged at one end, facing the substrate, of the connecting piece. The sliding portion can enter and exit the sliding chamber from the first opening in a state where the connector is detached from the base plate. The substrate closes the first opening with the connector connected to the substrate. Whereby assembly can be facilitated.

In a further exemplary embodiment of the interlocking mechanism of the withdrawable switchgear cabinet, the sliding part is connected to the interlocking part by means of a screw thread. Therefore, the length of the linkage piece in the first direction can be adjusted through the relative rotation of the sliding part and the linkage part, so that the device is suitable for different use environments.

In a further exemplary embodiment of the interlocking mechanism of the withdrawable switchgear cabinet, the interlocking mechanism further comprises a compression spring located in the sliding chamber, the compression spring being capable of applying a force to the base member and the linkage member to drive the linkage member in a direction opposite to the first direction. Whereby the operation can be facilitated.

In a further exemplary embodiment of the interlocking mechanism of the withdrawable switchgear cabinet, two sliding slots are provided on the sliding part. The interlocking mechanism further comprises two connecting pins and an extension spring. Each connecting pin is fixedly connected with the base body and penetrates through the sliding piece through one sliding long hole. One end of the extension spring is connected with the base body or the connecting pin, and the other end of the extension spring is connected with the sliding piece so as to drive the sliding piece to move along the second direction. The structure is simple, and the processing and the assembly are easy.

In a further exemplary embodiment of the interlocking mechanism of the withdrawable switchgear cabinet, the first direction and the second direction are perpendicular.

The utility model also provides a pull-out type cubical switchboard, it includes an foretell interlocking device. The interlocking mechanism of the draw-out switch cabinet has a simple structure, so that the draw-out switch cabinet is easy to install and maintain.

In another exemplary embodiment of the withdrawable switchgear cabinet, the withdrawable switchgear cabinet further comprises a cabinet body, a chassis, and an electrical device. The base of the interlocking mechanism is configured for at least a portion of a door of the cabinet. The chassis vehicle is arranged in the cabinet body and comprises a lead screw. In the case of a closed cabinet door, the axis of the spindle is parallel to this first direction of the base body. The electrical equipment is connected with the chassis vehicle and can be switched between a test position and a working position relative to the cabinet body along the direction parallel to the axis of the lead screw along with the rotation of the lead screw. Under the condition that the cabinet door is closed and electrical equipment is located this experimental position, electrical equipment can be through leaning on the linkage and be restricted the linkage through first neck to wear to locate the linkage hole. When the electrical device is in the working position, the electrical device avoids the range of motion of the linkage. The base body of the interlocking mechanism is provided for at least a part of the door of the cabinet, whereby the overall structure can be made more compact.

In a further exemplary embodiment of the withdrawable switchgear cabinet, the cabinet door has a threaded bore. Under the condition that the cabinet door is closed, the screw hole corresponds to the screw. The draw-out switchgear further comprises a blocking plate slidably connected to the cabinet door to block or unblock the screw hole. In the process that the baffle moves to open the screw hole, the baffle can push the sliding part, so that the linkage part enters the second hole section from the first hole section. Therefore, the sliding piece can be moved while the screw hole is opened by pushing the baffle plate, so that the operation is simplified.

Drawings

The following drawings are only schematic illustrations and explanations of the present invention, and do not limit the scope of the present invention.

Fig. 1 is a schematic structural view of an exemplary embodiment of an interlocking mechanism of a draw-out switchgear.

Fig. 2 is a cross-sectional view of the linkage and base shown in fig. 1.

Fig. 3 is a partial structural view of the sliding member shown in fig. 1.

Fig. 4 to 6 are views showing a state of use of the interlock mechanism shown in fig. 1.

Fig. 7 and 8 are schematic structural views of an exemplary embodiment of a withdrawable switchgear.

Description of the reference symbols

10 base body

11 substrate

12 connecting piece

121 sliding chamber

123 first opening

13 screw hole

30 linkage

31 sliding part

32 second neck part

33 linkage part

34 first neck part

40 sliding part

41 linkage hole

411 first hole section

412 second bore section

42 sliding long hole

51 compression spring

52 extension spring

60 connecting pin

80 locking piece

81 bolt

91 cabinet body

92 chassis vehicle

93 leading screw

94 electric appliance

95 baffle

D1 first direction

D2 second direction

Third direction D3

Detailed Description

In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings, wherein the same reference numerals in the drawings denote the same or similar components.

"exemplary" means "serving as an example, instance, or illustration" herein, and any illustration, embodiment, or steps described as "exemplary" herein should not be construed as a preferred or advantageous alternative.

In this document, "first", "second", etc. do not mean their importance or order, etc., but merely mean that they are distinguished from each other so as to facilitate the description of the document.

For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product.

Fig. 1 is a schematic structural view of an exemplary embodiment of an interlocking mechanism of a draw-out switchgear. As shown in fig. 1, the interlocking mechanism includes a base 10, a link 30, a slider 40, and a lock 80. The lock 80 is used to unlock a key that is the key of the program lock. An unlock key indicates that the key can be removed from the lock 80, a lock key indicates that the key cannot be removed from the lock 80 and the key cannot be used to perform potentially dangerous operations. The linkage 30 is movably connected to the base body 10 in a first direction D1 of the base body 10 and in a reverse direction thereof. In the present exemplary embodiment, the base body 10 includes a base plate 11 and a connecting member 12, and the linkage member 30 is movably connected to the connecting member 12, but is not limited thereto, and in other exemplary embodiments, the base body 10 may be provided in other structures. The base plate 11 is, for example, part of a cabinet door of a withdrawable switchgear cabinet, and the connecting element 12 is, for example, a structural element having a cavity 121.

Fig. 2 is a cross-sectional view of the linkage 30 and the base 10 shown in fig. 1. As shown in fig. 2, the linkage 30 is continuously provided with a first neck 34 and a second neck 32 along the first direction D1. As shown in fig. 1, the sliding member 40 is movably connected to the base 10, and particularly to the substrate 11, along a second direction D2 and a reverse direction thereof. The second direction D2 is different from the first direction D1, for example, the second direction D2 may be perpendicular to the first direction D1. The slider 40 has a linking hole 41 penetrating in the first direction D1. Fig. 3 is a partial structural view of the sliding member shown in fig. 1. As shown in fig. 1 and 3, the linkage hole 41 is continuously provided with a first hole section 411 and a second hole section 412 along the second direction D2, that is, the first hole section 411 and the second hole section 412 are communicated. The link 30 can be inserted through the link hole 41 by the first and second necks 34 and 32.

With the second neck 32 threaded through the linkage hole 41, the second neck 32 is constrained to slide within the second hole section 412, the slider 40 being able to prevent the lock 80 from unlocking the key by abutting against the lock 80; in the case where the first neck portion 34 is inserted into the interlocking hole 41, the first neck portion 34 can slide in the first hole section 411 and the second hole section 412, and in the case where the first hole section 411 is located, the slider 40 can slide to a position avoiding the lock 80. The abutment of the slider 40 against the lock 80 is, for example, a portion of the slider 40 that can abut the lock 80, thereby preventing the lock 80 from unlocking the key. The position where slider 40 clears lock 80 is such that slider 40 cannot interfere with lock 80 during the process of lock 80 unlocking a key, for example.

As shown in fig. 1, the locking member 80 is connected to the base 10, and may be connected to the base 11, and the locking member 80 has a latch 81. When the locking tongue 81 is extended from one direction, such as the third direction D3 in fig. 1, the key can be unlocked and removed from the lock 80. The third direction D3 may be perpendicular to both the first direction D1 and the second direction D2. Fig. 4 to 6 are views showing a state of use of the interlock mechanism shown in fig. 1. In fig. 5 and 6, the key associated with lock 80 is locked and cannot be removed. As shown in fig. 5 and 6, in the case that the second neck portion 32 is inserted into the linking hole 41, the second neck portion 32 is limited to slide in the second hole section 412, and the slider 40 can prevent the lock 80 from unlocking the key by abutting against the locking tongue 81 of the lock 80. As shown in fig. 1 and 4, when the first neck 34 is inserted into the linking hole 41, the first neck 34 can slide between the first hole section 411 and the second hole section 412, and can slide in the first hole section 411 until the sliding member 40 avoids the movement range of the latch 81, so that the lock 80 can unlock and extract the key.

An example of the use of the interlock mechanism in a draw-out switchgear is schematically illustrated below.

As shown in fig. 1 and 7, initially, the electrical device 94 is located at the testing position (shown by a solid line in fig. 7) and limits the linkage 30 to pass through the first neck 34 and the linkage hole 41 by abutting against the linkage 30, when the lock 80 is not inserted with the key, the lock tongue 81 is located in the state shown in fig. 1, for example, the lock tongue 81 is located on the movement track of the sliding member 40, the sliding member 40 is blocked by the lock tongue 81 and cannot move in the direction opposite to the second direction D2, and the linkage 30 passes through the first hole section 411.

The key of the lock 80 is then inserted and rotated to move the latch tongue 81 of the lock 80 to the state shown in fig. 4 to avoid the range of motion of the slider 40. The slider 40 is moved in the direction opposite the second direction D2 to the position shown in fig. 4, for example by manual actuation. Since the link 30 is not moved at this time, the link 30 is inserted into the second hole section 412, and the sliding member 40 can abut against the latch tongue 81 to prevent the latch tongue 81 from moving, so as to prevent the lock 80 from unlocking the key.

The electrical device 94 is then moved to the operating position (shown in phantom in fig. 7), and the electrical device 94 avoids the range of motion of the link 30, i.e., no longer abuts the link 30. The link 30 moves in the direction opposite the first direction D1 to the position shown in fig. 5, where it is threaded through the second bore section 412 by the second neck 32, such as by manual actuation or by a spring actuation.

The slider 40 is then slid in the second direction D2 until the second neck 32 is stopped at the interface of the first hole segment 411 and the second hole segment 412 (as shown in fig. 6) and cannot enter the first hole segment 411, for example, by manual actuation or by spring actuation. Slider 40 is still able to abut locking bolt 81 at this point to prevent movement of locking bolt 81 and thus prevent lock 80 from unlocking the key. The key cannot be used to perform operations that may be dangerous, such as opening the door of a switchgear cabinet. That is, the sliding member 40 can slide to a position avoiding the lock 80 when it is located at the first hole section 411.

After the electrical device 94 moves back to the testing position, the electrical device 94 restrains the link 30 by abutting against the link 30 to be disposed through the link aperture 41 by the first neck 34. The sliding member 40 is slid in the second direction D2 to the position shown in fig. 1, thereby avoiding the range of motion of the latch tongue 81, which is actuated, for example, by hand or by a spring. Turning the key to bring the bolt 81 to the position shown in figure 1, the key can be withdrawn.

When the interlocking mechanism is applied to the draw-out switch cabinet, the interlocking mechanism can be arranged on parts which do not move along with electrical equipment, such as a cabinet body and a cabinet door of the draw-out switch cabinet. The interlocking mechanism is simple in structure, low in cost and easy to install and maintain.

In the illustrative embodiment, in a third direction D3 perpendicular to the first direction D1 and the second direction D2, the aperture diameter of first bore section 411 is smaller than the aperture diameter of second bore section 412, the width of first neck 34 is less than or equal to the aperture diameter of first bore section 411, and the width of second neck 32 is greater than the aperture diameter of first bore section 411 and less than or equal to the aperture diameter of second bore section 412.

In the present exemplary embodiment, the first and second necks 34 and 32 are both cylindrical, and the first and second bore sections 411 and 412 are both waist-hole type, which is simple in structure and easy to machine. Without limitation, in other exemplary embodiments, the shape of the first neck 34, the second neck 32, the first bore section 411, and the second bore section 412 may be adjusted as desired, such as square.

As shown in fig. 2, in the exemplary embodiment, the base body 10 has a sliding chamber 121 extending in the first direction D1. The link 30 includes a slide portion 31 and a link portion 33. The sliding part 31 is at least partially located in the sliding cavity 121 and can be slidably connected with the base body 10 along the first direction D1 and the opposite direction. The base body 10 can restrict the movable range of the slide portion 31. For example, the base body 10 can limit the movable range of the slide portion 31 by abutting the end wall of the slide chamber 121 against the slide portion 31, and more specifically, the slide portion 31 has a protruding ring on the outer side wall thereof, the protruding ring having a diameter larger than that of the outlet of the slide chamber 121. The interlocking portion 33 connects one end of the sliding portion 31 away from the sliding chamber 121 in the first direction D1. The structural stability is good. In the present exemplary embodiment, the linkage portion 33 includes the first neck portion 34, and the sliding portion 31 includes the second neck portion 32, but is not limited thereto.

In the exemplary embodiment, the slide portion 31 and the interlocking portion 33 are detachably connected. The connector 12 is located at one side of the substrate 11 and detachably connects the substrate 11. The sliding chamber 121 is disposed at the connecting member 12, and the connecting member 12 is provided with a first opening 123 communicating with the sliding chamber 121 toward one end of the substrate 11 in the first direction D1. In a case where the link 12 is detached from the base plate 11, the slide portion 31 can enter and exit the slide chamber 121 from the first opening 123. In the case where the connecting member 12 connects the substrate 11, the substrate 11 closes the first opening 123. Whereby assembly can be facilitated. Specifically, if the sliding portion 31 has a protruding ring on the outer side wall, the width of the first opening 123 needs to be larger than the diameter of the protruding ring, so that the sliding portion 31 can smoothly enter and exit the sliding cavity 121 from the first opening 123.

In the exemplary embodiment, the sliding portion 31 is connected to the linkage portion 33 by a screw thread, and the axis of the screw thread is parallel to the first direction D1. The length of the link 30 in the first direction D1 can be adjusted by the relative rotation of the sliding part 31 and the link 33 to adapt to different use environments.

In the illustrated embodiment, the interlock mechanism further includes a compression spring 51 disposed in the sliding cavity 121, wherein the compression spring 51 is capable of applying a force to the base 10 and the linkage member 30 to drive the linkage member 30 to move in a direction opposite to the first direction D1. When the linkage 30 loses the abutment of the electrical device 94, the linkage can move in the direction opposite to the first direction D1 under the driving of the compression spring 51 to pass through the linkage hole 41 through the second neck 32, i.e. the state shown in fig. 4 is moved to the state shown in fig. 5. Whereby the operation can be facilitated. That is, the compression spring 51 is charged with energy in a state where the electric appliance 94 is located at the test position, and the compression spring 51 is discharged with energy in a state where the electric appliance 94 is located at the operating position, thereby being able to push the link 30.

In the exemplary embodiment, the slider 40 is further provided with two long sliding holes 42, and the length direction of the long sliding holes 42 is parallel to the second direction D2. The interlocking mechanism also includes two connecting pins 60 and an extension spring 52. Each connecting pin 60 is fixedly connected to the base body 10 and inserted through the sliding member 40 through one of the sliding long holes 42. The connecting pins 60 can move in the second direction D2 and the opposite direction thereof in the corresponding slide long holes 42. The extension spring 52 has one end connected to the base 10 or the connecting pin 60 and the other end connected to the slider 40 to drive the slider 40 to move in the second direction D2. The structure is simple, and the processing and the assembly are easy.

Fig. 7 and 8 are schematic structural views of an exemplary embodiment of a withdrawable switchgear. As shown in fig. 7 and 8, the draw-out switchgear includes an interlocking mechanism shown in fig. 1, a cabinet body 91, a chassis 92, and an electrical device 94. The base body 10 of the interlocking mechanism is provided as a door for the cabinet body 91, whereby the overall structure can be made more compact and the protection of the front side against arcing in the withdrawable switchgear can be improved. But not limited thereto, in other exemplary embodiments, the base 10 of the interlocking mechanism may also be provided as a part of the cabinet door rather than the entirety, or the base 10 may also be provided to the cabinet. In the present exemplary embodiment, the linkage 30, the sliding member 40, and the locking member 80 are disposed on a side of the cabinet door facing the inside of the cabinet body 91. The key of the locking piece 80 can be inserted into the locking piece 80 through the cabinet door to adjust the position of the latch tongue 81 of the locking piece 80.

The chassis 92 is disposed in the cabinet 91 and includes a screw 93. In the case of a closed cabinet door, i.e. the base body 10, the axis of the threaded spindle 93 is parallel to this first direction D1 of the base body 10. The electrical equipment 94 is connected to the chassis 92 and is capable of switching, with the rotation of the lead screw 93, between a test position (shown by a solid line in fig. 7) and an operating position (shown by a broken line in fig. 7) with respect to the cabinet 91, in a direction parallel to the axis of the lead screw 93. With the cabinet door closed and the electrical appliance 94 in this testing position, the electrical appliance 94 is able to restrain the link 30 by abutting against the link 30 to be pierced through the link hole 41 by the first neck 34. With the electrical device 94 in this operating position, the electrical device 94 avoids the range of motion of the linkage 30, i.e., the electrical device 94 does not exert a force on the linkage 30.

The working process of the drawout switchgear and the interlocking mechanism has been described in the above explanation of the use of the interlocking mechanism shown in fig. 1, and is not described again here. The interlocking mechanism of the draw-out switch cabinet has a simple structure, so that the draw-out switch cabinet is easy to install and maintain.

In the exemplary embodiment, the cabinet door has one screw hole 13. When the cabinet door is closed, the screw hole 13 corresponds to the screw 93 in the first direction D1. The drawer-type switchgear further includes a blocking plate 95 capable of slidably coupling the cabinet door in the second direction D2 and the opposite direction thereof to block or open the screw hole 13. During the process of moving the baffle 95 to open the screw hole 13, the baffle 95 can push against the sliding member 40, so that the linkage member 30 enters the second hole section 412 from the first hole section 411. Thereby, the slider 40 can be moved while opening the screw hole 13 by pushing the shutter 95, thereby simplifying the operation.

In the exemplary embodiment, the baffle 95 may be driven to move along the second direction D2 to a position where it can block the screw hole 13 by providing an extension spring. Whereby the operation can be simplified.

In the illustrated embodiment, the shutter 95 is slidably coupled to the cabinet door, such as by a slide hole and a slide pin. The structure is simple and the stability is good, but not limited to this.

It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.

The above list of details is only for the practical examples of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent embodiments or modifications, such as combinations, divisions or repetitions of the features, which do not depart from the technical spirit of the present invention, should be included in the scope of the present invention.

Claims (11)

1. Interlocking mechanism of pull-out type cubical switchboard, its characterized in that includes:

a base (10);

a linkage (30) movably connected to said base (10) in a first direction (D1) of said base (10) and in a reverse direction thereof; said link (30) being provided in succession with a first neck (34) and a second neck (32) along the first direction (D1);

a slider (40) movably connected to said base (10) in a second direction (D2) and in a direction opposite thereto; the slider (40) has a linking hole (41) provided through in the first direction (D1); the linkage hole (41) is continuously provided with a first hole section (411) and a second hole section (412) along the second direction (D2); the linkage piece (30) can be arranged in the linkage hole (41) in a penetrating way through the first neck part (34) and the second neck part (32); and

a lock (80) connected to the base body (10), the lock (80) being capable of unlocking a key;

wherein, with the second neck (32) pierced through the linkage hole (41), the second neck (32) is constrained to slide within the second hole section (412), the slider (40) being able to prevent the lock (80) from unlocking the key by abutting against the lock (80); under the condition that the first neck part (34) penetrates through the linkage hole (41), the first neck part (34) can slide in the first hole section (411) and the second hole section (412), and under the condition that the first neck part (34) is located in the first hole section (411), the sliding part (40) can slide to a position avoiding the locking part (80).

2. The interlock mechanism for a draw-out switchgear cabinet according to claim 1, wherein the aperture of the first bore section (411) is smaller than the aperture of the second bore section (412), the width of the first neck (34) is smaller than or equal to the aperture of the first bore section (411), and the width of the second neck (32) is larger than the aperture of the first bore section (411) and smaller than or equal to the aperture of the second bore section (412).

3. The interlocking mechanism for a withdrawable switchgear cabinet according to claim 1, characterized in that said base body (10) has a sliding cavity (121) extending along the first direction (D1); the linkage (30) comprises:

-a sliding portion (31) located at least partially inside said sliding cavity (121) and comprising said second neck portion (32), said sliding portion (31) being slidably connectable to said base body (10) along said first direction (D1) and along a direction opposite thereto; and

a linkage part (33) which comprises the first neck part (34) and the linkage part (33) is connected with one end of the sliding part (31) far away from the sliding cavity (121).

4. The interlocking mechanism of a withdrawable switchgear, according to claim 3, characterized in that said sliding portion (31) and said interlocking portion (33) are removably connected; the base body (10) comprises:

a base plate (11), said slider (40) being movably connected to said base plate (11); and

a connecting member (12) which is located on one side of the base plate (11) and detachably connects the base plate (11); the sliding cavity (121) is arranged on the connecting piece (12), and a first opening (123) communicated with the sliding cavity (121) is formed in one end, facing the substrate (11), of the connecting piece (12); -said sliding portion (31) being able to move in and out of said sliding cavity (121) from said first opening (123) in the case of detachment of said connection element (12) from said base plate (11); the base plate (11) closes the first opening (123) when the connecting piece (12) is connected to the base plate (11).

5. The interlocking mechanism for a withdrawable switchgear, according to claim 3, characterized in that said sliding portion (31) is connected to said linkage portion (33) by means of a screw thread.

6. The interlocking mechanism of a draw-out switchgear cabinet according to claim 3, further comprising a compression spring (51) located in said sliding cavity (121), said compression spring (51) being capable of exerting a force on said base body (10) and said linkage member (30) to drive said linkage member (30) in a direction opposite to said first direction (D1).

7. The interlocking mechanism for a draw-out switchgear cabinet according to claim 1, wherein the slide (40) is provided with two slide slots (42); the interlocking mechanism further comprises:

two connecting pins (60), wherein each connecting pin (60) is fixedly connected with the base body (10) and penetrates through the sliding piece (40) through one sliding long hole (42); and

and an extension spring (52) having one end connected to the base (10) or the connecting pin (60) and the other end connected to the slider (40) to drive the slider (40) to move in the second direction (D2).

8. The interlocking mechanism of a withdrawable switchgear, according to one of the claims 1 to 7, characterized in that the first direction (D1) and the second direction (D2) are perpendicular.

9. Withdrawable switchgear, characterized in that it comprises an interlocking mechanism according to any one of claims 1 to 8.

10. The draw-out switchgear of claim 9, further comprising:

-a cabinet (91), said base (10) of said interlocking mechanism being provided for at least a portion of a door of said cabinet (91);

a chassis (92) disposed in the cabinet (91) and including a lead screw (93); the axis of the spindle (93) is parallel to the first direction (D1) of the base body (10) when the cabinet door is closed; and

an electrical device (94) connected to said chassis (92) and capable of switching between a test position and an operating position with respect to said cabinet (91) in a direction parallel to the axis of said lead screw (93) as said lead screw (93) rotates; when the cabinet door is closed and the electrical equipment (94) is located at the test position, the electrical equipment (94) can limit the linkage piece (30) to penetrate through the linkage hole (41) through the first neck part (34) by abutting against the linkage piece (30); with the electrical device (94) in the operating position, the electrical device (94) avoids the range of motion of the linkage member (30).

11. The draw-out switchgear cabinet according to claim 10, wherein the cabinet door has a screw hole (13); the screw hole (13) corresponds to the screw (93) when the cabinet door is closed; the draw-out switch cabinet also comprises a baffle plate (95) which is connected with the cabinet door in a sliding way so as to shield or open the screw hole (13); during the process that the baffle (95) moves to open the screw hole (13), the baffle (95) can push the sliding piece (40) so that the linkage piece (30) enters the second hole section (412) from the first hole section (411).

Images