Door interlocking device

Abstract

The utility model discloses a door interlocking device which comprises an interlocking rod, one end of the interlocking rod is provided with a hook portion used for locking the closing state of a handcart chamber door, and the handcart chamber door is provided with an interlocking bolt used for being connected with the hook portion in a clamped mode. The other end of the interlocking rod is arranged to be a transmission end used for being connected with a valve mechanism in a handcart chamber in a transmission mode, and an interlocking axis used for being fixedly connected with the handcart chamber is arranged in the middle of the interlocking rod in a hinged mode. According to the utility model, a linkage structure of the interlocking rod and the valve mechanism is arranged, when the handcart chamber door is operated to be closed to enable the handcart to be rocked into a working position, the handcart chamber door is synchronously locked through the interlocking rod, so that an operator cannot open the handcart chamber door without additional active locking operation of the operator, and the electrical five-prevention requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the switchgear equipment technical field relates to a door interlocking device. BACKGROUND

[0002] According to the electrical five-prevention requirement of switchgear, the circuit breaker trolley in the switch cabinet is strictly prohibited to open the trolley room door when in the working position, and personnel is strictly prohibited to enter the live compartment. The trolley room door and the trolley of the traditional switch cabinet do not exist interlocking, and the operator needs to actively lock the trolley room door after shaking the trolley into the working position to ensure the five-prevention requirement. The multi-step operation is easy to cause the operator's operation negligence, resulting in the situation that the trolley room door is not closed in place or locked, or other personnel mistakenly open the live compartment, and the operation safety guarantee still has defects. SUMMARY

[0003] The utility model discloses in order to overcome the insufficient of prior art, provide a door interlocking device.

[0004] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A door interlocking device, including the interlocking lever, one end of the interlocking lever is set for the hook part for locking the trolley room door closed state, the trolley room door is provided with the interlocking bolt for the card joint with the hook part, the other end of the interlocking lever is set for the transmission end for the transmission with the shutter mechanism in the trolley room, the middle part of the interlocking lever is hingedly provided with the interlocking shaft for the fixed connection with the trolley room.

[0006] Further, the shutter mechanism includes an upper shutter, a lower shutter and a plurality of shutter connecting rods, one or more of the shutter connecting rods are used to connect with the circuit breaker trolley, and the rocking-in and rocking-out action of the circuit breaker trolley is transmitted to form the opening or closing action of the upper shutter and the lower shutter.

[0007] Further, the transmission end is provided with a sliding groove of a set length, and the shutter connecting rod includes a transmission rod, and the transmission rod is provided with an interlocking drive shaft arranged in the sliding groove.

[0008] Further, the interlocking bolt and the trolley room door are detachably connected.

[0009] In summary, the utility model has the advantages that:

[0010] The utility model sets up the linkage structure of interlocking lever and shutter mechanism, when the trolley room door is closed to make the trolley rock into the working position, the trolley room door is locked synchronously through the interlocking lever, and the operator can not open the trolley room door without additional active locking operation, which meets the electrical five-prevention requirement. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the structure schematic view of the handcart room of the utility model.

[0012] Figure 2 It is the structure schematic view of the interlocking device and the valve mechanism.

[0013] Figure 3 It is the structure schematic view of the interlocking device and the valve mechanism. Figure 2 It is the structure schematic view of the interlocking device and the valve mechanism.

[0014] Figure 4 It is the structure schematic view of the interlocking device and the valve mechanism. Figure 2 It is the structure schematic view of the interlocking device and the valve mechanism.

[0015] Figure 5 It is the structure schematic view of the interlocking device and the valve mechanism. Figure 2 It is the structure schematic view of the interlocking device and the valve mechanism.

[0016] In the figure, 11 is a valve connecting rod, 111 is a transmission rod, 112 is an interlocking drive shaft, 12 is a handcart room door, 121 is an interlocking bolt, 2 is an interlocking rod, 21 is an interlocking shaft, 22 is a hook part, and 23 is a sliding groove. DETAILED DESCRIPTION

[0017] The embodiments of the present application will be described in detail with specific examples. Those skilled in the art can easily understand other advantages and functions of the present application from the content disclosed in the specification. The present application can also be implemented or applied in other different embodiments, and each detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following examples and features in the examples can be combined with each other without conflict.

[0018] It should be noted that the drawings provided in the following examples only illustrate the basic concept of the present application in a schematic manner, and only the components related to the present application are shown in the drawings, not the number, shape and size of the components when actually implemented. The shape, number and proportion of each component can be changed arbitrarily when actually implemented, and the component layout pattern can also be more complex.

[0019] All directional indications (such as up, down, left, right, front, back, transverse, longitudinal, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications also change accordingly.

[0020] Due to installation errors and other reasons, the parallel relationship referred to in the embodiments of the present application may actually be an approximate parallel relationship, and the perpendicular relationship may actually be an approximate perpendicular relationship.

[0021] The utility model provides a door interlock device for the safety protection when the circuit breaker handcart is arranged in the switch cabinet handcart room.

[0022] The handcart room inner side is provided with a flap mechanism, which is used for closing the joint of the working position when the circuit breaker handcart is rocked out to the test position, and opening the working position to enable the handcart contact arm to enter the connection with the joint when the circuit breaker handcart is rocked in to the working position.

[0023] Referring to Figure 1 The flap mechanism includes an upper flap, a lower flap and a plurality of flap connecting rods 11, the rocking in and out action of the circuit breaker handcart drives the action transmission of the flap connecting rod 11, and further drives the relative opening or closing action of the upper flap and the lower flap, the application of the flap mechanism in the existing switch cabinet circuit breaker handcart room has been relatively popular, the structure and principle of the flap mechanism here adopt the disclosed content of the prior art, so no redundant description is made.

[0024] Referring to Figure 2 And Figure 3 The door interlock device includes an interlock rod 2 and an interlock shaft 21, the interlock shaft 21 is fixedly arranged in the handcart room, the middle part of the interlock rod 2 is provided with a connecting hole for the interlock shaft 21 to pass through, and after the interlock rod 2 is connected with the interlock shaft 21, the interlock rod 2 can rotate in a set range with the interlock shaft 21 as the rotation center.

[0025] One end of the interlock rod 2 is arranged close to the handcart room door 12 on the outer side of the handcart room, the handcart room door 12 is detachably connected with an interlock bolt 121, and the end of the interlock rod 2 is provided with a hook portion 22 for clamping the interlock bolt 121, referring to Figure 4 When the handcart room door 12 is closed and the interlock rod 2 is rotated to the locking position by a set angle, the hook portion 22 is clamped with the interlock bolt 121, so that the interlock rod 2 forms the locking and limiting of the handcart room door 12, and the handcart room door 12 cannot be opened.

[0026] Referring to Figure 5 The other end of the interlock rod 2 is a transmission end, which is close to the flap mechanism, the end is provided with a sliding groove 23, the sliding groove 23 has a set length, the flap connecting rod 11 includes a transmission rod 111, one end of the transmission rod 111 is hinged in the handcart room, the transmission rod 111 is rotated around the hinge point, the middle part of the transmission rod 111 is provided with an interlock driving shaft 112, the interlock driving shaft 112 passes through the sliding groove 23 and can move relative to the sliding groove 23 along the length direction of the sliding groove 23.

[0027] When the functional trolley is moved from the test position to the working position, or from the working position to the test position, the transmission rod 111 rotates upward or downward, which causes the interlocking drive shaft 112 to move relative to the sliding groove 23, and the relative force between the interlocking drive shaft 112 and the sliding groove 23 drives the interlocking rod 2 to rotate, so that the interlocking rod 2 rotates to the locking position or the unlocking position.

[0028] When the functional trolley moves to the working position, the interlocking rod 2 rotates to the locking position, and the hook portion 22 is clamped with the interlocking bolt 121, so that the trolley door 12 cannot be opened; when the functional trolley moves to the test position, the interlocking rod 2 rotates to the unlocking position, and the hook portion 22 is disengaged from the interlocking bolt 121, so that the trolley door 12 can be opened.

[0029] Further, the detachable arrangement of the interlocking bolt 121 and the trolley door 12 enables the user to directly detach the interlocking bolt 121 from the trolley door 12 in an emergency, even when the functional trolley is in the working position and the interlocking rod 2 is in the locking position, so as to meet the emergency demand.

[0030] Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the present application.

Claims

1. A door interlock device, characterized by The interlocking rod (2) is provided with a hook portion (22) at one end for locking the handcart room door (12) in the closed state, the handcart room door (12) is provided with an interlocking bolt (121) for clamping with the hook portion (22), the other end of the interlocking rod (2) is provided with a transmission end for connecting and transmitting with the valve mechanism in the handcart room, and the middle part of the interlocking rod (2) is hinged and provided with an interlocking shaft (21) for fixed connection with the handcart room.

2. A door interlock according to claim 1, wherein, The valve mechanism comprises an upper valve, a lower valve and a plurality of valve connecting rods (11), one or more of the valve connecting rods (11) are used to connect with the circuit breaker handcart to transmit the in-out action of the circuit breaker handcart to form the opening or closing action of the upper valve and the lower valve.

3. A door interlock according to claim 2, wherein, A slide groove (23) with a set length is arranged on the transmission end, the valve connecting rod (11) comprises a transmission rod (111), and the transmission rod (111) is provided with an interlocking driving shaft (112) for being arranged in the slide groove (23).

4. A door interlock according to claim 1, wherein, The interlocking bolt (121) is detachably connected with the handcart room door (12).

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