A switch cabinet drawer seat interlocking device

Abstract

A switch cabinet drawer seat interlocking device is characterized in that: a handle cover (902) is rotatably mounted on the notch of the folding crank mounting slot (901a); the handle cover (902) can open or close the folding crank mounting slot (901a) during rotation; one end of a transverse locking plate (903) corresponds to and is linked with the locking slot hole (902a) on the handle cover (902); the other end is connected to a longitudinal locking plate (904); the longitudinal locking plate (904) can drive the transverse locking plate (903) to move back and forth in the horizontal direction during up and down movement; the transverse locking plate (903) can extend into or out of the locking slot hole (902a) from the through hole of the folding crank mounting slot (901a) during the horizontal back and forth movement; the locking transmission gear shaft (902b) passes through the folding crank mounting slot (901a) and is linked with the rack locking plate (905). The present invention simplifies the structure of the interlocking mechanism between the three position states of the drawer unit, namely connection, test and isolation, and the closing and opening states of the circuit breaker, thereby further improving the safe use performance of the low-voltage switch cabinet.

Description

Technical Field

[0001] The invention belongs to the technical field of switch cabinets, and in particular relates to an interlocking device for a drawer seat of a switch cabinet. Background Art

[0002] In the field of low-voltage power distribution equipment in power systems, drawer-type switchgear is a relatively high-level distribution equipment, consisting of multiple drawer functional units. The drawer functional unit houses the main functional electrical components within a housing composed of a drawer mechanical structure. The drawer mechanical mechanism includes mechanisms for advancement, withdrawal, and interlocking, making it easy to maintain, easily interchangeable, and safe and reliable. Low-voltage switchgear drawers currently on the market generally feature two advancement methods: manual cranking and manual pulling. These methods control the safe operation of the drawer functional unit at all levels within the switchgear, from entry to connection to the main circuit, and have three position states: connection, test, and isolation.

[0003] At present, when the drawer unit of the low-voltage switch cabinet is switched between the connection, test and isolation positions, the interlocking mechanism between the three position states of the drawer unit and the closing and opening states of the circuit breaker is complex in structure, and its reliability and stability are insufficient. Summary of the Invention

[0004] The purpose of the present invention is to address the defects of the interlocking mechanism of the above-mentioned existing low-voltage switch cabinet drawer unit, and to provide a switch cabinet drawer seat interlocking device, while simplifying the structure of the interlocking mechanism of the three position states of the drawer unit connection, test, and isolation and the circuit breaker closing and opening states, thereby further improving the safe use performance of the low-voltage switch cabinet.

[0005] Technical Solution

[0006] In order to achieve the above-mentioned technical objectives, the present invention proposes a switch cabinet drawer seat interlocking device, characterized in that: the interlocking mechanism includes a mounting seat, a folding crank mounting groove is provided on the mounting seat, and the handle cover is rotatably installed in the slot of the folding crank mounting groove. The folding crank mounting groove can be opened or closed during the rotation of the handle cover. The handle cover is provided with a locking slot and a locking transmission gear shaft. The transverse locking plate is installed in the guide hole on the mounting seat and can slide back and forth horizontally. One end of the transverse locking plate is linked to the locking slot on the handle cover, and the other end is connected to the longitudinal locking plate. The longitudinal locking plate is connected to the driving screw and can move up and down under the action of the driving screw. During the up and down movement of the longitudinal locking plate, the transverse locking plate can be driven to move back and forth in the horizontal direction.

[0007] Furthermore, when the handle cover is in a state of closing the notch of the folding crank mounting slot, the transverse locking plate can extend into or pull out of the locking slot hole from the through hole of the folding crank mounting slot during the horizontal back-and-forth movement, thereby locking or unlocking the handle cover, and the locking transmission gear shaft passes through the folding crank mounting slot and is linked to the rack locking plate. In the process of the handle cover rotating to open or close the notch of the folding crank mounting slot, the locking transmission gear shaft drives the rack locking plate to move up and down, and the rack locking plate can extend into or leave the locking notch on the transverse locking plate during the up and down movement, thereby locking or unlocking the transverse locking plate.

[0008] Furthermore, the rack locking piece is connected to a three-position fixing rod, and the rack locking piece can drive the three-position fixing rod to rotate during the up and down movement, thereby locking or unlocking the position state between the device mounting plate and the drawer bottom plate.

[0009] Furthermore, an anti-closing lock piece mechanism is provided on the drawer bottom plate, one end of which is linked to the device mounting plate, and the other end corresponds to the longitudinal lock piece and can limit the downward displacement of the longitudinal lock piece, so that the circuit breaker handle assembly can only be closed when the device mounting plate is in the connected position.

[0010] Furthermore, the operating portion of the folding crank passes through the through hole of the mounting seat and is placed in the folding crank mounting groove.

[0011] Furthermore, the handle cover is rotatably mounted on the notch of the folding crank installation slot using a handle shaft.

[0012] Furthermore, the locking transmission gear shaft is engaged with the gear portion 1 at the bottom end of the rack locking plate, and the gear portion 2 at the bottom end of the rack locking plate is engaged with one end of the three-position fixing rod.

[0013] Furthermore, the longitudinal locking piece is provided with a longitudinal waist-shaped slot, a transverse waist-shaped slot and an oblique waist-shaped slot. The first step screw passes through the longitudinal waist-shaped slot and is locked on the mounting seat. The driving screw extends into the corresponding transverse waist-shaped slot. The second step screw passes through the oblique waist-shaped slot and is locked on the transverse locking piece. The driving screw can drive the longitudinal locking piece to move up and down as the circuit breaker handle rotates. The longitudinal locking piece can drive the transverse locking piece to move horizontally during the up and down movement of the longitudinal locking piece.

[0014] Furthermore, a stopper is provided at the other end of the three-position fixing rod, and the three-position fixing rod can extend into or leave the limiting hole 1 on the device mounting plate and the limiting hole 2 on the drawer bottom plate during rotation.

[0015] Furthermore, the folding crank mounting groove is arranged on a side of the mounting base facing the drawer front door, and a handle hole is opened on the drawer front door at a position corresponding to the handle cover.

[0016] Furthermore, a three-position display slider is installed on the back of the mounting seat, and the three-position display slider can slide on the mounting seat. The three-position display slider is connected to a three-position positioning block, and the three-position positioning block is provided with a linkage inclined hole, and the position pin on the device mounting plate extends into the linkage inclined hole.

[0017] The present invention also proposes an anti-closing lock plate mechanism of a switch cabinet drawer seat interlocking device, characterized in that: the anti-closing lock plate mechanism includes an anti-closing lock plate, the anti-closing lock plate is rotatably mounted on the drawer bottom plate, the anti-closing lock plate is equipped with a lock plate torsion spring, a locking rod extends from the anti-closing lock plate, the locking rod is pressed against the device mounting plate under the action of the lock plate torsion spring, the device mounting plate can drive the anti-closing lock plate to rotate during movement, and the anti-closing lock plate can cover or open the longitudinal lock plate clearance hole located below the longitudinal lock plate on the drawer bottom plate during rotation.

[0018] Beneficial effects

[0019] The present invention provides a switch cabinet drawer seat interlocking device, in which the interlocking mechanism is independently arranged for easy installation and maintenance. The entire interlocking mechanism has a simple structure, and the reliability and stability are further improved, thereby effectively improving the safe use performance of the low-voltage switch cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Attachment Figure 1 It is a structural diagram of an embodiment of the present invention.

[0021] Attachment Figure 2a 2 is an exploded schematic diagram of a drawer seat in an embodiment of the present invention.

[0022] Attachment Figure 2b It is attached Figure 4a Enlarged view of point M in the middle.

[0023] Attachment Figure 3a It is the interlocking mechanism product in the embodiment of the present invention Figure 1 .

[0024] Attachment Figure 3b This is the second product diagram of the interlocking mechanism in the embodiment of the present invention.

[0025] Attachment Figure 4a The internal structure of the interlocking mechanism in the embodiment of the present invention is shown in FIG. Figure 1 .

[0026] Attachment Figure 4b Schematic diagram 2 of the internal structure of the interlocking mechanism in an embodiment of the present invention.

[0027] Attachment Figure 5 2 is an exploded schematic diagram of the interlocking mechanism in an embodiment of the present invention.

[0028] Attachment Figure 6a This is the mounting seat product in the embodiment of the present invention Figure 1 .

[0029] Attachment Figure 6b This is the second product diagram of the mounting base in the embodiment of the present invention.

[0030] Attachment Figure 7 This is a product diagram of a handle cover in an embodiment of the present invention.

[0031] Attachment Figure 8 This is a product diagram of a longitudinal locking piece in an embodiment of the present invention.

[0032] Attachment Figure 9 This is a product diagram of a transverse locking piece in an embodiment of the present invention.

[0033] Attachment Figure 10 This is a product diagram of a rack lock piece in an embodiment of the present invention.

[0034] Attachment Figure 11 This is a product diagram of a foldable crank in an embodiment of the present invention.

[0035] Attachment Figure 12 This is a product diagram of a circuit breaker handle transmission sleeve in an embodiment of the present invention.

[0036] Attachment Figure 13 2 is a schematic diagram of locking the three-position fixing rod in an embodiment of the present invention.

[0037] Attachment Figure 14 Schematic diagram of the installation of the position pin in the embodiment of the present invention.

[0038] Attachment Figure 15 2 is a schematic diagram of a structure in which a handle cover is locked by a transverse locking piece in an embodiment of the present invention.

[0039] Attachment Figure 16 2 is a schematic diagram of a handle cover being locked by a gear locking piece extending into a locking notch of a transverse locking piece in an embodiment of the present invention. DETAILED DESCRIPTION

[0040] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0041] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0042] Example

[0043] In order to improve the protection level of the drawer unit and further enhance the safe use performance of the low-voltage switchgear in this embodiment, the structure of the drawer unit is further improved. The following further describes the structure of each component in detail with reference to the accompanying drawings.

[0044] As attached Figure 1 , 3a, 3b and 4a, 4b, 5, the interlocking mechanism 9 includes a mounting seat 901, as shown in the attached Figure 6a and 6b As shown, the mounting base 901 is provided with a folding crank mounting groove 901a. Specifically, the folding crank mounting groove 901a is provided on the side of the mounting base 901 facing the drawer front door 102. Figure 11 As shown, the folding crank 602 is divided into three sections. The operating portion 602a of the folding crank 602 is straightened and put on the middle section 602b, and then the whole is embedded in the transmission portion 602c of the folding crank 602. After folding, the end of the operating portion 602a is in the folding crank mounting groove 901a for easy pulling out when in use. The transmission portion 602c is movably embedded in the connecting transmission hole 601a of the propulsion screw 601 by means of a keyway. The handle cover 902 is rotatably mounted on the notch of the folding crank mounting groove 901a, as shown in Appendix 2a. A handle hole 102a is provided on the drawer front door 102 at a position corresponding to the handle cover 902. The folding crank mounting groove 901a can be opened or closed during the rotation of the handle cover 902, as shown in Appendix 2a. Figure 5 As shown, the handle cover 902 is provided with a locking slot 902a and a locking transmission gear shaft 902b. Figure 7 As shown, the handle cover 902 is a plastic part, and the locking transmission gear shaft 902b is a metal part. The locking transmission gear shaft 902b is embedded in the handle cover 902. Figure 4a 、 4b , 5 and 9 shown in the transverse locking piece 903 is installed in the guide hole 901b on the mounting seat 901 and can slide back and forth horizontally. Figure 6a As shown, the folding crank mounting groove 901a has a guide hole 901c on the folding crank mounting groove 901a aligned with the guide hole 901b on the mounting base 901, and one end of the transverse locking piece 903 is linked to the locking slot 902a on the handle cover 902, and the other end is aligned with the guide hole 901b on the mounting base 901. Figure 4b 、 5, 6a and 8 are connected, the longitudinal locking piece 904 is connected to the driving screw 702a and can move up and down under the action of the driving screw 702a, and the longitudinal locking piece 904 can drive the transverse locking piece 903 to move back and forth in the horizontal direction during the up and down movement. When the handle cover 902 is in a state of closing the notch of the folding crank mounting slot 901a, the transverse locking piece 903 can extend into or pull out of the locking slot 902a and the guide hole 901c on the folding crank mounting slot 901a during the horizontal back and forth movement, thereby locking or unlocking the handle cover 902, and the end of the locking transmission gear shaft 902b is a gear, and the locking transmission gear shaft 902b The handle cover 902 passes through the folding crank installation slot 901a and engages with the rack lock piece 905 for transmission. When the handle cover 902 rotates around the locking transmission gear shaft 902b to open or close the notch of the folding crank installation slot 901a, the locking transmission gear shaft 902b drives the rack lock piece 905 to move up and down. During the up and down movement of the rack lock piece 905, it can extend into or leave the locking notch 903a on the transverse lock piece 903, thereby locking or unlocking the transverse lock piece 903. Figure 13 As shown (the figure hides the mounting base 901), the rack lock piece 905 is connected to the three-position fixing rod 12. The rack lock piece 905 can drive the three-position fixing rod 12 to rotate during the up and down movement, thereby locking or unlocking the position state between the device mounting plate 2 and the drawer bottom plate 101. Figure 2a and 2b As shown, the drawer bottom plate 101 is provided with an anti-closing lock plate mechanism 15. One end of the anti-closing lock plate mechanism 15 is linked to the device mounting plate 2, and the other end corresponds to the longitudinal lock plate 904 to limit the downward movement of the longitudinal lock plate 904, so that the circuit breaker handle assembly 7 can only be closed when the device mounting plate 2 is in the connected position. More specifically, as shown in the attached figure, Figure 2a and 11 The operating portion 602a of the folding crank 602 is placed in the folding crank mounting groove 901a through the through hole of the mounting base 901. The handle cover 902 is rotatably mounted in the handle cover mounting hole (not shown in the drawings) of the folding crank mounting groove 901a using a handle shaft 902c at one end and a locking transmission gear shaft 902b at the other end. The locking transmission gear shaft 902b is connected to the handle cover mounting hole 901a of the folding crank mounting groove 901a. Figure 10 and 13The gear portion 1 905a at the bottom end of the rack lock piece 905 is meshed with the gear portion 2 905b at the bottom end of the rack lock piece 905 and one end of the three-position fixing rod 12. The other end of the three-position fixing rod 12 is provided with a stopper 1201. The three-position fixing rod 12 can extend into or out of the limiting hole 1 203 on the device mounting plate 2 and the limiting hole 2 101a on the drawer bottom plate 101 during rotation. Specifically, when the handle cover 902 is opened, the three-position fixing rod 12 is The stopper 1201 at the end of the rod 12 moves away from the first limiting hole 203 on the device mounting plate 2 and the second limiting hole 101a on the drawer bottom 101. Conversely, when the handle cover 902 is closed, the stopper 1201 at the end of the three-position fixing rod 12 rotates 90 degrees and then extends into the first limiting hole 203 on the device mounting plate 2 and the second limiting hole 101a on the drawer bottom 101, thereby limiting the relative movement of the device mounting plate 2 and the drawer bottom 101, thereby providing a three-position limiting function. When the handle cover 902 is closed, although the folding crank 602 cannot drive the device mounting plate 2 to move, the device mounting plate 2 may move due to vibration or mating stress, causing damage to the device. Therefore, the three-position fixing rod 12 is used to ensure that the device mounting plate 2 cannot move.

[0045] As attached Figure 4a 、 4b The longitudinal locking piece 904 shown in FIG8 is provided with a longitudinal waist-shaped slot 904a, a transverse waist-shaped slot 904b and an oblique waist-shaped slot 904c. A step screw 904d is passed through the longitudinal waist-shaped slot 904a to be locked on the mounting base 901. The driving screw 702a is inserted into the corresponding transverse waist-shaped slot 904b to be locked in the mounting base 901. Figure 12 The illustrated drive threaded hole 702b on the handle drive sleeve 702 includes four transverse waist-shaped slots 904b. Different heights of the circuit breakers 8 can accommodate different transverse waist-shaped slots 904b. A second stepped screw 904e passes through the oblique waist-shaped slot 904c and locks onto the transverse locking piece 903. The drive screw 702a drives the longitudinal locking piece 904 to move vertically as the circuit breaker handle 701 rotates. This vertical movement of the longitudinal locking piece 904 drives the transverse locking piece 903 to move horizontally.

[0046] As attached Figure 2a and 2bAs shown, this embodiment further provides an anti-closing lock plate mechanism of a switch cabinet drawer seat interlocking device, wherein the anti-closing lock plate mechanism 15 includes an anti-closing lock plate 1501, which is rotatably mounted on the drawer bottom plate 101 using an anti-closing lock plate shaft 1504. A lock plate torsion spring 1502 is mounted on the anti-closing lock plate 1501, and a locking rod 1503 extends from the anti-closing lock plate 1501. The locking rod 1503 is pressed against the device mounting plate 2 under the action of the lock plate torsion spring 1502. During the movement of the device mounting plate 2, It can drive the anti-closing lock piece 1501 to rotate. During the rotation of the anti-closing lock piece 1501, it can cover or open the longitudinal lock piece clearance hole 101b located on the drawer bottom plate 101 below the longitudinal lock piece 904. To be more specific, under the action of the lock piece torsion spring 1502, the anti-closing lock piece 1501 always contacts and connects with the device mounting plate 2. When the device mounting plate 2 is in any position other than the connected position, the anti-closing lock piece 1501 covers the longitudinal lock piece clearance hole 101b located on the drawer bottom plate 101 below the longitudinal lock piece 904, and the longitudinal lock piece 904 cannot move downward. Its interlocking effect causes the circuit breaker handle to be unable to close and rotate, thereby achieving the circuit breaker being unable to close at any position other than the connected position. When the device mounting plate 2 is in the connected position, the anti-closing lock piece 1501 clears the longitudinal lock piece clearance hole 101b located below the longitudinal lock piece 904 on the drawer bottom plate 101, allowing the longitudinal lock piece 904 to move downward, allowing the circuit breaker to close. In this embodiment, a rear cover 906 covers the back of the mounting base 901 to further prevent dust.

[0047] To display the three-position status, see the attached Figure 4a 、 4b and Figure 5 As shown, a three-position display slider 13 is installed on the back of the mounting seat 901. The three-position display slider 13 can slide on the mounting seat 901. The three-position display slider 13 is connected to a three-position positioning block 14. Figure 14 As shown, the three-position positioning block 14 is provided with a linkage oblique hole 1401 , and the position pin 201 on the device mounting plate 2 extends into the linkage oblique hole 1401 .

[0048] The working principle of this embodiment is as follows: when the circuit breaker 8 is closed, the circuit breaker handle 701 drives the longitudinal locking piece 904 to move downward by driving the screw 702a, and the longitudinal locking piece 904 drives the transverse locking piece 903 to extend into the locking slot 902a through the oblique waist-shaped slot 904c. Figure 15As shown, the handle cover 902 cannot be opened, and the folding crank 602 cannot be pulled out of the folding crank mounting slot 901a to operate the three positions of the drawer unit. When the circuit breaker 8 is opened, the circuit breaker handle 701 drives the longitudinal locking plate 904 upward by driving the screw 702a. The longitudinal locking plate 904 drives the transverse locking plate 903 out of the locking slot 902a through the oblique waist-shaped slot 904c, and the handle cover 902 can be opened. The handle cover 902 rotates about the handle shaft 902c. During the opening process, the locking transmission gear shaft 902b rotates and drives the rack locking plate 905 to move upward and extend into the locking notch 903a on the transverse locking plate 903, thereby locking the transverse locking plate 903 and preventing it from moving. As shown in the attached figure Figure 16 As shown, the circuit breaker handle 701 cannot be closed. Only when the handle cover 902 rotates around the handle shaft 902c to close, the locking transmission gear shaft 902b rotates to drive the rack lock plate 905 to move downward and leave the locking notch 903a on the transverse lock plate 903, thereby unlocking the transverse lock plate 903, and the circuit breaker handle 701 can be closed. The entire process improves the protection level of the drawer unit.

[0049] To display the three-position status, see the attached Figure 5 、 6a , 6b and Figure 7 As shown, a three-position display slider 13 is mounted on the back of the mounting base 901. This slider 13 is slidable on the mounting base 901 and is connected to a three-position positioning block 14. This positioning block 14 has an interlocking oblique hole 1401, into which a position pin 201 on the device mounting plate 2 extends. As the device mounting plate 2 moves between the three positions, it drives the three-position display slider 13 to display the three positions of the drawer unit: connected, test, and isolated.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A switch cabinet drawer interlocking device, characterized in that: The invention comprises an interlocking mechanism (9), wherein the interlocking mechanism (9) comprises a mounting seat (901), a folding crank mounting groove (901a) is provided on the mounting seat (901), a handle cover (902) is rotatably mounted on the notch of the folding crank mounting groove (901a), and the folding crank mounting groove (901a) can be opened or closed during the rotation of the handle cover (902), a locking slot (902a) and a locking transmission gear shaft (902b) are provided on the handle cover (902), and a transverse locking plate (903) is mounted on the handle cover (902). The guide hole (901b) on the mounting seat (901) can slide back and forth horizontally, one end of the transverse locking piece (903) is linked to the locking slot (902a) on the handle cover (902), and the other end is connected to the longitudinal locking piece (904), and the longitudinal locking piece (904) is connected to the driving screw (702a) and can move up and down under the action of the driving screw (702a), and the longitudinal locking piece (904) can drive the transverse locking piece (903) to move back and forth in the horizontal direction during the up and down movement; When the handle cover (902) is in a state of closing the notch of the folding crank mounting slot (901a), the transverse locking plate (903) can extend into or pull out of the locking slot (902a) from the through hole of the folding crank mounting slot (901a) during the horizontal back-and-forth movement, thereby locking or unlocking the handle cover (902); the locking transmission gear shaft (902b) passes through the folding crank mounting slot (901a) and is linked to the rack locking plate (905); when the handle cover (902) rotates to open or close the notch of the folding crank mounting slot (901a), the locking transmission gear shaft (902b) drives the rack locking plate (905) to move up and down; and during the up and down movement of the rack locking plate (905), it can extend into or leave the locking notch (903a) on the transverse locking plate (903), thereby locking or unlocking the transverse locking plate (903).

2. A switch cabinet drawer interlocking device according to claim 1, characterized in that: The invention comprises a device mounting plate (2), wherein the rack locking plate (905) is connected to a three-position fixing rod (12), and the rack locking plate (905) can drive the three-position fixing rod (12) to rotate during the up and down movement, thereby locking or unlocking the position state between the device mounting plate (2) and the drawer bottom plate (101).

3. A switch cabinet drawer interlocking device according to claim 2, characterized in that: An anti-closing lock piece mechanism (15) is provided on the drawer bottom plate (101); one end of the anti-closing lock piece mechanism (15) is linked to the device mounting plate (2), and the other end corresponds to the longitudinal lock piece (904) and can limit the downward movement of the longitudinal lock piece (904), so that the circuit breaker handle assembly (7) can only be closed when the device mounting plate (2) is in the connected position.

4. The switch cabinet drawer interlocking device according to claim 1, characterized in that: The operating portion of the folding crank (602) passes through the through hole of the mounting seat (901) and is placed in the folding crank mounting groove (901a).

5. The switch cabinet drawer interlocking device according to claim 1, characterized in that: The handle cover (902) is rotatably mounted on the notch of the folding crank installation slot (901a) using a handle shaft (902c).

6. The switch cabinet drawer interlocking device according to claim 1, characterized in that: The locking transmission gear shaft (902b) is engaged with the gear portion 1 (905a) at the bottom end of the rack lock plate (905), and the gear portion 2 (905b) at the bottom end of the rack lock plate (905) is engaged with one end of the three-position fixing rod (12).

7. The switch cabinet drawer interlocking device according to claim 3, characterized in that: The circuit breaker handle assembly (7) includes a circuit breaker handle (701), a longitudinal waist-shaped slot (904a), a transverse waist-shaped slot (904b) and an oblique waist-shaped slot (904c) are provided on the longitudinal locking piece (904), a step screw (904d) passes through the longitudinal waist-shaped slot (904a) and is locked on the mounting seat (901), a driving screw (702a) extends into the corresponding transverse waist-shaped slot (904b), and a step screw (904e) passes through the oblique waist-shaped slot (904c) and is locked on the transverse locking piece (903), and the driving screw (702a) can drive the longitudinal locking piece (904) to move up and down during the rotation of the circuit breaker handle (701), and the longitudinal locking piece (904) can drive the transverse locking piece (903) to move horizontally during the up and down movement.

8. The switch cabinet drawer interlocking device according to claim 2, characterized in that: The other end of the three-position fixing rod (12) is provided with a stopper (1201), and the three-position fixing rod (12) can extend into or out of the limiting hole 1 203 on the device mounting plate (2) and the limiting hole 2 (101a) of the drawer bottom plate (101) during rotation.

9. The switch cabinet drawer interlocking device according to claim 1, characterized in that: The folding crank mounting groove (901a) is arranged on a side of the mounting seat (901) facing the drawer front door (102), and a handle hole (102a) is provided on the drawer front door (102) at a position corresponding to the handle cover (902).

10. The switch cabinet drawer interlocking device according to claim 2, characterized in that: A three-position display slider (13) is mounted on the back of the mounting seat (901), and the three-position display slider (13) can slide on the mounting seat (901). The three-position display slider (13) is connected to a three-position positioning block (14), and the three-position positioning block (14) is provided with a linkage oblique hole (1401). The position pin (201) on the device mounting plate (2) extends into the linkage oblique hole (1401).

11. An anti-closing lock plate mechanism for a switch cabinet drawer interlocking device according to any one of claims 2, 3, 7, 8, and 10, characterized in that: The anti-closing lock plate mechanism (15) comprises an anti-closing lock plate (1501), the anti-closing lock plate (1501) is rotatably mounted on the drawer bottom plate (101), a lock plate torsion spring (1502) is mounted on the anti-closing lock plate (1501), a locking rod (1503) extends from the anti-closing lock plate (1501), the locking rod (1503) presses against the device mounting plate (2) under the action of the lock plate torsion spring (1502), and the device mounting plate (2) can drive the anti-closing lock plate (1501) to rotate during movement, and the anti-closing lock plate (1501) can cover or open a longitudinal lock plate clearance hole (101b) located below the longitudinal lock plate (904) on the drawer bottom plate (101) during rotation.

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