Door interlocking device

Abstract

The utility model discloses a door interlocking device, which comprises a mechanism end yoke plate mechanism, an interlocking transmission mechanism and an interlocking mechanism, the mechanism end yoke plate mechanism is linked with a main loop, the interlocking transmission mechanism is respectively connected with the mechanism end yoke plate mechanism and the interlocking mechanism, and the interlocking mechanism is locked or unlocked with a mechanism door. The door interlocking device is integrally hidden in the ring main unit, so that the interlocking device cannot be directly damaged by an external tool, and the safety is improved; the mechanism door is opened or closed through vertical movement, the door interlocking device locks the mechanism door to limit vertical movement of the mechanism door only by buckling the interlocking plate into the buckling hole of the mechanism door, and compared with an existing interlocking mode, the interlocking structure and the stress direction are changed, so that even if the door interlocking device is forcibly damaged, the mechanism door can be opened or closed. Deformation and damage of parts except the door interlocking device are not affected, violent damage is effectively prevented, and safety is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of switch cabinets and relates to a door interlocking device. Background Art

[0002] The cable room of the ring main unit is the connection part of the high-voltage power supply line. It is forbidden to open the cable room door to enter when the cable is energized to avoid serious safety accidents. The door can only be opened when the main circuit is grounded. Therefore, the cable room door panel must have a reliable interlocking device to limit the opening of the door.

[0003] The interlock of the existing product leaks out, and the cabinet door can be opened by artificially destroying the interlock. In addition, due to structural problems, strong resistance to the interlock device will cause damage to the interlock itself and the mechanism body, causing deformation of parts and leading to failure. Summary of the invention

[0004] In order to overcome at least one deficiency of the prior art, the utility model provides a door interlocking device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a door interlocking device, including a mechanism end link plate mechanism, an interlocking transmission mechanism and an interlocking mechanism, the mechanism end link plate mechanism is linked with the main circuit, the interlocking transmission mechanism is respectively connected with the mechanism end link plate mechanism and the interlocking mechanism, and the interlocking mechanism locks or unlocks the mechanism door.

[0006] Furthermore, it also includes an anti-opening mechanism, which locks or unlocks the interlocking transmission mechanism.

[0007] Furthermore, it also includes a reset device, which is connected to the mechanism end connecting plate mechanism.

[0008] Furthermore, it also includes an interlocking base, which is fixedly connected to the frame of the cabinet, and the interlocking mechanism and the anti-gate opening mechanism are arranged on the interlocking base and are slidably connected to the interlocking base.

[0009] Furthermore, the interlocking transmission mechanism includes a lock push plate, which is connected to the mechanism end connecting plate mechanism.

[0010] Furthermore, the interlocking mechanism includes an interlocking slide plate, which is connected to the lock push plate.

[0011] Furthermore, the lock push plate is fixedly provided with an interlocking pin shaft, the interlocking slide plate is provided with an inclined groove, and the interlocking pin shaft is slidably arranged in the inclined groove.

[0012] Furthermore, the mechanism door is provided with a buckle hole, which is opposite to the interlocking slide plate. The interlocking slide plate is buckled into the buckle hole to lock the mechanism door, or the interlocking slide plate is disengaged from the buckle hole to unlock the mechanism door.

[0013] Furthermore, the anti-gate opening mechanism includes a reverse lock plate and a spring, the lock push plate is provided with a slot, the reverse lock plate is snap-connected with the slot to lock the lock push plate, or the reverse lock plate is disengaged from the slot to unlock the lock push plate.

[0014] Furthermore, the reverse lock plate is provided with a resist plate and a buckle plate, the buckle plate is buckled with the card slot to lock the lock push plate, or the buckle plate is disengaged from the card slot to unlock the lock push plate, and the upper end surface of the resist plate is an inclined surface.

[0015] In summary, the utility model is beneficial in that:

[0016] 1) The door interlocking device of the utility model is entirely hidden inside the ring main unit, so the interlocking device cannot be directly damaged by external tools, thereby improving safety.

[0017] 2) The mechanism door of the utility model is opened or closed by moving up and down, and the door interlock device locks the mechanism door to restrict the up and down movement of the mechanism door by only buckling the interlock plate into the buckle hole of the mechanism door. Compared with the existing interlocking method, the present application changes the interlocking structure and the force direction, so that even if the door interlock device is forcibly damaged, it will not affect the deformation and damage of components other than the door interlock device, effectively preventing violent damage and improving safety.

[0018] 3) The door interlocking device of the utility model has a simple and reliable structure, and its modular design facilitates installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the door interlocking device of the present utility model.

[0020] Figure 2 It is a schematic diagram of the door interlocking device of the present utility model.

[0021] Figure 3 It is an exploded schematic diagram of the interlocking transmission mechanism and the interlocking mechanism of the utility model.

[0022] Figure 4 It is a schematic diagram of unlocking the door interlocking device of the present utility model.

[0023] Figure 5 It is a locking schematic diagram of the door interlocking device of the present utility model.

[0024] Markings in the figure: mechanism end connecting plate mechanism 1, interlocking transmission mechanism 2, interlocking mechanism 3, interlocking base 4, frame 5, reset device 6, anti-gate opening mechanism 7, connecting rod 10, mechanism end connecting plate 11, lock push plate 21, interlocking pin 22, interlocking slide plate 31, first hole 41, second hole 42, third hole 43, fourth hole 44, rear frame is provided with fifth hole 45, sixth hole 46, reset spring 61, reset rod 62, reverse lock plate 71, spring 72, slot 211, inclined slot 311, interlocking plate 312, slide plate 313, push plate 711, buckle plate 712, shift plate 713. DETAILED DESCRIPTION

[0025] The following describes the implementation of the present invention through specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations. The details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0026] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention, and thus the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed at will, and the component layout may also be more complicated.

[0027] All directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, horizontal, vertical...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0028] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of the present invention may actually be an approximately parallel relationship, and the vertical relationship may actually be an approximately vertical relationship.

[0029] Embodiment 1:

[0030] like Figure 1-5 As shown, a door interlocking device includes a mechanism end link plate mechanism 1, an interlocking transmission mechanism 2 and an interlocking mechanism 3. The mechanism end link plate mechanism 1 is linked to the main circuit, the interlocking transmission mechanism 2 is respectively connected to the mechanism end link plate mechanism 1 and the interlocking mechanism 3, and the interlocking mechanism 3 is locked or unlocked with the mechanism door.

[0031] like Figure 1As shown, to facilitate the description of the orientation of this embodiment, a coordinate system is established, the x direction is set as the front-to-back direction, the positive direction of x is forward, the negative direction of x is backward, the y direction is set as the left-right direction, the z direction is set as the up-down direction, the positive direction of z is upward, and the negative direction of z is downward.

[0032] The mechanism end link plate mechanism 1 includes a connecting rod 10 and a mechanism end link plate 11. The connecting rod 10 is linked to the main circuit (not shown in the figure). The connecting rod 10 and the mechanism end link plate 11 are connected. The non-grounding operation of the main circuit drives the connecting rod 10 and the mechanism end link plate 11 to move downward, and the interlocking mechanism 3 switches to the mechanism door locking state. The grounding operation of the main circuit disconnects it from the connecting rod 10, and the interlocking mechanism 3 switches to the mechanism door unlocking state.

[0033] The door interlock device further comprises a reset device 6, which is connected to the mechanism end link plate mechanism 1. When the main circuit is grounded, the reset device 6 moves the mechanism end link plate mechanism 1 upward to reset.

[0034] The reset device 6 includes a reset spring 61 and a reset rod 62. The reset rod 62 is connected to the mechanism end connecting plate 11 of the mechanism end connecting plate mechanism 1. The reset rod 62 moves synchronously with the mechanism end connecting plate 11 of the mechanism end connecting plate mechanism 1. The reset spring 61 is sleeved on the reset rod 62. The two ends of the reset spring 61 are respectively connected to the mechanism end connecting plate 11 and the frame 5 of the ring network cabinet. The non-grounding operation of the main circuit drives the mechanism end connecting plate mechanism 1 to move downward, and the reset rod 62 moves downward synchronously. The reset spring 61 is compressed to store energy, and the interlocking mechanism 3 is switched to the mechanism door locked state. The grounding operation of the main circuit disconnects it from the connecting rod 10, and the reset spring 61 resets and releases energy, driving the mechanism end connecting plate mechanism 1 to move upward, and the interlocking mechanism 3 is switched to the mechanism door unlocked state.

[0035] The reset rod 62 is slidably connected to the frame 5 to prevent the reset rod 62 and the mechanism end link plate mechanism 1 from being offset in the reset movement direction.

[0036] The interlocking transmission mechanism 2 includes a lock push plate 21, which is fixedly connected to the mechanism end connecting plate 11. The movement of the connecting rod 10 drives the lock push plate 21 to move up and down synchronously.

[0037] The interlocking mechanism 3 includes an interlocking slide 31, which is connected to the lock push plate 21. The up and down movement of the lock push plate 21 controls the forward and backward movement of the interlocking slide 31. When the lock push plate 21 moves up, the interlocking slide 31 moves backward, and the interlocking slide 31 is unlocked from the mechanism door. When the lock push plate 21 moves down, the interlocking slide 31 moves forward, and the interlocking slide 31 is locked with the mechanism door.

[0038] The interlocking slide plate 31 is connected to the lock push plate 21 in the following manner:

[0039] The lock push plate 21 is fixed with an interlocking pin 22, and the interlocking slide plate 31 is provided with an inclined groove 311. The interlocking pin 22 is slidably set in the inclined groove 311. The present application converts the up and down movement of the lock push plate 21 into the forward and backward movement of the interlocking slide plate 31 through the sliding connection of the interlocking pin 22 in the inclined groove 311, thereby realizing the locking or unlocking of the interlocking slide plate 31 and the mechanism door.

[0040] The mechanism door is provided with a buckle hole (not shown), which is opposite to the interlocking slide plate 31. The interlocking slide plate 31 moves forward and buckles into the buckle hole to lock the mechanism door, and the interlocking slide plate 31 moves backward and disengages from the buckle hole to unlock the mechanism door.

[0041] The door interlock device also includes an anti-gate opening mechanism 7, which is locked or unlocked with the interlock transmission mechanism 2. When the interlock mechanism 3 is locked with the mechanism door, the anti-gate opening mechanism 7 is unlocked with the interlock transmission mechanism 2. When the interlock mechanism 3 is unlocked with the mechanism door, the anti-gate opening mechanism 7 is locked with the interlock transmission mechanism 2, thereby preventing the interlock action after the mechanism door is opened and not allowing the main circuit to be opened.

[0042] The anti-opening mechanism 7 includes a reverse lock plate 71 and a spring 72. The lock push plate 21 is provided with a card slot 211. The spring 72 releases energy to control the reverse lock plate 71 to move forward and connect with the card slot 211 to lock the lock push plate 21. The reverse lock plate 71 disengages from the card slot 211 to unlock the lock push plate 21.

[0043] When the lock body 21 is in the state of being closed, the lock body 21 can be closed by the bolt 722, and the bolt 722 can be closed by the bolt 722, so that the lock body 21 can be opened and closed by the bolt 722.

[0044] The upper end surface of the abutment plate 711 is an inclined surface. When the mechanism door moves from top to bottom to close the door, the mechanism door contacts the inclined surface of the abutment plate 711. During the downward movement, the abutment plate 711 is pushed backward by the inclined surface, thereby unlocking the lock push plate 21.

[0045] The door interlocking device further comprises an interlocking base 4 , which is fixedly connected to the frame 5 , and the interlocking mechanism 3 and the anti-gate opening mechanism 7 are arranged on the interlocking base 4 and are slidably connected to the interlocking base 4 .

[0046] The interlocking base 4 includes a front frame plate and a rear frame plate, which are fixedly connected to form a cavity inside. The interlocking mechanism 3 and the anti-gate separation mechanism 7 are arranged in the cavity. The spring 72 is arranged between the reverse lock plate 71 and the rear frame plate. When the reverse lock plate 71 moves backward, the spring 72 is compressed to store energy.

[0047] The front frame plate is provided with a first hole 41, a second hole 42, a third hole 43 and a fourth hole 44, the rear frame is provided with a fifth hole 45 and a sixth hole 46, the interlocking slide plate 31 is provided with an interlocking plate 312 and a slide plate 313, the interlocking plate 312 and the slide plate 313 are located at the front and rear sides of the interlocking slide plate 31, the reverse lock plate 71 is provided with a shift plate 713, the abutment plate 711 and the shift plate 713 are located at the front and rear sides of the reverse lock plate 71, the interlocking plate 312 is slidably set in the first hole 41, the slide plate 313 is slidably set in the fifth hole 45, the abutment plate 711 is slidably set in the second hole 42, the shift plate 713 is slidably set in the sixth hole 46, the interlocking pin shaft 22 is slidably set in the third hole 43, and the lock push plate 21 is slidably set in the fourth hole 44.

[0048] During the implementation of this embodiment, when the main circuit is not grounded, the control mechanism end link plate mechanism 1 moves downward, and drives the lock push plate 21 to move downward, the reset spring 61 is compressed, the interlocking slide plate 31 moves forward, and the interlocking plate 312 protrudes forward and buckles into the buckle hole to lock the mechanism door. When the mechanism door needs to be opened, the main circuit is grounded, the main circuit is disengaged from the mechanism end link plate mechanism 1, the reset spring 61 releases energy, and the mechanism end link plate mechanism 1 moves upward, thereby driving the lock push plate 21 to move upward, and the interlocking slide plate 31 moves backward When the locking cam 712 is in the closed position, the locking cam 712 is in the closed position, and the locking cam 712 is in the closed position, so that the locking cam 712 is locked and the locking cam 712 is locked.

[0049] The door interlock device of the present application is hidden as a whole inside the ring network cabinet, so the interlock device cannot be directly destroyed by external tools, thereby improving safety; in the present embodiment, the mechanism door is opened or closed by moving up and down, and the door interlock device locks the mechanism door and restricts the up and down movement of the mechanism door by only snapping the interlock plate 312 into the buckle hole of the mechanism door. Compared with the existing interlocking method, the lever arm of the interlock plate 312 of the present application is short, and a large force is required to destroy the structure, which effectively improves reliability, changes the interlocking structure and the direction of force, so that even if the door interlock device is forcibly destroyed, it will not affect the deformation and damage of components other than the door interlock device, effectively preventing violent destruction and improving safety; the door interlock device of the present application has a simple and reliable structure, and the modular design is easy to install; the present application uses the door interlock device to achieve that the door opening operation must be performed when the ground is closed, and the grounding opening operation cannot be performed after the mechanism door is opened.

[0050] Figure 1 The frame 5 shown is a partial structure, and the interlocking base 4 and the return spring 61 are both connected to the frame 5 .

[0051] The door interlock device in this embodiment can be used alone in existing equipment.

[0052] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

Claims

1. A door interlocking device, characterized in that: It includes a mechanism end connecting plate mechanism, an interlocking transmission mechanism and an interlocking mechanism. The mechanism end connecting plate mechanism is linked with the main circuit. The interlocking transmission mechanism is respectively connected with the mechanism end connecting plate mechanism and the interlocking mechanism. The interlocking mechanism is locked or unlocked with the mechanism door.

2. A door interlocking device according to claim 1, characterized in that: It also includes an anti-opening mechanism, which locks or unlocks the interlocking transmission mechanism.

3. A door interlocking device according to claim 1, characterized in that: It also includes a reset device, which is connected to the mechanism end connecting plate mechanism.

4. A door interlocking device according to claim 1, characterized in that: It also includes an interlocking base, which is fixedly connected to the frame of the cabinet, and the interlocking mechanism and the anti-gate opening mechanism are arranged on the interlocking base and are slidably connected to the interlocking base.

5. A door interlocking device according to claim 2, characterized in that: The interlocking transmission mechanism comprises a lock push plate, which is connected to a mechanism end link plate mechanism.

6. A door interlocking device according to claim 5, characterized in that: The interlocking mechanism comprises an interlocking slide plate, and the interlocking slide plate is connected to the lock push plate.

7. A door interlocking device according to claim 5, characterized in that: The lock push plate is fixedly provided with an interlocking pin shaft, the interlocking slide plate is provided with an oblique groove, and the interlocking pin shaft is slidably arranged in the oblique groove.

8. A door interlocking device according to claim 6, characterized in that: The mechanism door is provided with a buckle hole, which is opposite to the interlocking slide plate. The interlocking slide plate is buckled into the buckle hole to lock the mechanism door, or the interlocking slide plate is separated from the buckle hole to unlock the mechanism door.

9. A door interlocking device according to claim 5, characterized in that: The anti-gate opening mechanism comprises a reverse lock plate and a spring. The lock push plate is provided with a card slot. The reverse lock plate is snap-connected with the card slot to lock the lock push plate or the reverse lock plate is disengaged from the card slot to unlock the lock push plate.

10. A door interlocking device according to claim 9, characterized in that: The reverse lock plate There are abutment plate and buckle plate, the buckle plate is connected with the card slot buckle, the lock push plate is locked, or the buckle plate is separated from the card slot, Unlock the lock push plate, and the upper end surface of the abutment plate is an inclined surface.

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