Bevel gear transmission type interlocking device for grounding switch and switch cabinet rear door

Abstract

The invention discloses an interlocking device for a bevel gear transmission type grounding switch and a switch cabinet rear door, which is characterized by comprising an interlocking assembly, a bevel gear transmission mechanism and a bevel gear transmission mechanism, and is characterized in that the interlocking assembly comprises a connecting rod, and the grounding mounting end of the connecting rod is provided with a limiting guide block and a sliding interlocking convex sleeve; the lower end part of the limiting guide block is in contact installation with the peripheral surface of the sliding interlocking convex sleeve; the rear door interlocking mounting end of the connecting rod is hooked with one end of the grounding switch connecting hook through a tension spring; a rear door interlocking mechanism is fixed at the other end of the grounding switch connecting hook; a bevel gear mechanism is arranged at the side part of the grounding switch; the side part of the bevel gear mechanism is provided with a fixed interlocking convex sleeve through a movably mounted connecting pin, the sliding interlocking convex sleeve is sleeved on the connecting pin, and the sliding distance of the sliding interlocking convex sleeve along the connecting pin is limited through the fixed interlocking convex sleeve at the end part; the limiting guide block is matched with a guide piece with a sliding groove for limiting and guiding. According to the invention, the cabinet rear door can be opened only when the grounding switch is in a closed state; only when the cabinet rear door is closed, the grounding switch can be switched off. The interlocking performance is higher, the timeliness is better, and the problem that operation and maintenance personnel mistakenly enter an electrified interval due to interlocking failure of an existing product is reduced.

Description

Technical Field

[0001] The invention relates to the field of electric power equipment, in particular to an interlocking device for a bevel gear transmission grounding switch and a rear door of a switch cabinet for interlocking a 10kV metal armored removable switch cabinet. Background Art

[0002] During the operation of the switch cabinet, there is high voltage inside it. If there is no reliable locking device, personnel may mistakenly open the back door to enter when the equipment is energized and touch the live parts, resulting in electric shock accidents.

[0003] The grounding interlock is designed to ensure that the rear door can only be opened when the grounding knife switch is closed and the equipment is reliably grounded. This can prevent staff from touching the inside of the equipment when the equipment is still energized.

[0004] The rear door lock design prevents personnel from opening the rear door at will without meeting safety conditions, ensuring that the interior of the equipment can only be accessed after a series of safety measures such as grounding have been completed, thereby protecting personnel safety and preventing equipment from being damaged due to abnormal situations such as misoperation.

[0005] The interlocking between the grounding switch and the rear door of the switch cabinet is an important safety guarantee product of the switch cabinet. How to optimize its design is the top priority of invention and improvement. Summary of the invention

[0006] In order to overcome the above-mentioned defects of the prior art, the object of the present invention is to provide an interlocking device between a bevel gear transmission grounding switch and a rear door of a switch cabinet.

[0007] In order to ensure reliable interlocking between the grounding switch of the switchgear and the cabinet rear door, the present invention requires that the cabinet rear door can be opened only when the grounding switch is in the closed state; the grounding switch can be opened only when the cabinet rear door is closed.

[0008] In order to achieve the purpose of the present invention, the technical solution adopted is:

[0009] A bevel gear transmission grounding switch and a switch cabinet rear door interlocking device, comprising:

[0010] A locking assembly, the locking assembly comprising a connecting rod, a grounding mounting end of the connecting rod being provided with a limit guide block and a sliding locking convex sleeve;

[0011] The lower end of the limit guide block is installed in contact with the outer peripheral surface of the sliding interlocking convex sleeve;

[0012] The rear door interlocking installation end of the connecting rod is hooked to one end of the grounding switch connecting hook through a tension spring;

[0013] A rear door interlocking mechanism is fixed on the other end of the grounding switch connecting hook;

[0014] A bevel gear mechanism is provided on the side of the grounding switch;

[0015] The side of the bevel gear mechanism is provided with a fixed interlocking convex sleeve through a movably installed connecting pin, the sliding interlocking convex sleeve is sleeved on the connecting pin and the sliding distance of the sliding interlocking convex sleeve along the connecting pin is limited by the fixed interlocking convex sleeve at the end;

[0016] The limiting guide block cooperates with the guide member with the slide groove to perform limiting guiding.

[0017] In a preferred embodiment of the present invention, the sliding interlocking convex sleeve is provided with a protrusion, which is in contact and engagement with or disengagement from the recessed portion of the fixed interlocking convex sleeve, and when in contact and engagement, the rotation of the bevel gear mechanism is restricted.

[0018] In a preferred embodiment of the present invention, the guide member with a slide groove is a slide groove bent plate with a first slide groove and a second slide groove arranged up and down.

[0019] In a preferred embodiment of the present invention, the rear door interlocking mechanism is installed at the rear door of the switch cabinet.

[0020] In a preferred embodiment of the present invention, a mounting hole for mounting the tension spring is provided at the rear door interlock mounting end of the connecting rod.

[0021] The beneficial effects of the present invention are:

[0022] The interlocking device of the bevel gear transmission grounding switch and the rear door of the switch cabinet of the present invention enhances the stability of the interlocking device, has higher interlocking performance and better timeliness, and reduces the problem of operation and maintenance personnel mistakenly entering the live interval due to interlocking failure of existing products. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the local structure of the present invention. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention. In addition, in the following structure, the description of the known structure and technology is omitted to avoid unnecessary confusion of the concept of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or component referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] like Figure 1 The interlocking device of the bevel gear transmission grounding switch and the rear door of the switch cabinet shown in the figure includes the following Figure 2 The interlocking assembly shown in the figure includes a connecting rod 6, and a limited guide block 4 and a sliding interlocking convex sleeve 5 are provided at the grounding installation end of the connecting rod 6, and the height of the limited guide block 4 is higher than the height of the sliding interlocking convex sleeve 5. The lower end of the limited guide block 4 is installed in contact with the outer peripheral surface of the sliding interlocking convex sleeve 5, and the rear door interlocking installation end of the connecting rod 6 is hooked with one end of the grounding switch connecting hook 8 through a tension spring 7, and the other end of the grounding switch connecting hook 8 is fixed with a rear door interlocking mechanism 9, specifically, a mounting hole 61 for installing the tension spring 7 is opened at the rear door interlocking installation end of the connecting rod 6, and the tension spring 7 is connected to the mounting hole 61, and the other end is hooked with one end of the grounding switch connecting hook 8, and the other end of the grounding switch connecting hook 8 is fixed with a rear door interlocking mechanism 9, and the rear door interlocking mechanism 9 is installed at the rear door of the switch cabinet (not shown in the figure).

[0028] A bevel gear mechanism 2 is provided on the side of the grounding switch 1. A fixed interlocking convex sleeve 11 is provided on the side of the bevel gear mechanism 2 through a movably installed connecting pin 10. The sliding interlocking convex sleeve 5 is sleeved on the connecting pin 10, and the sliding distance of the sliding interlocking convex sleeve 5 along the connecting pin 10 is limited by the fixed interlocking convex sleeve 11 at the end, and the limiting guide block 4 cooperates with the guide member 3 with a slide groove to perform limiting guidance.

[0029] The guide member 3 with a slide groove is a slide groove bent plate with a first slide groove and a second slide groove arranged up and down.

[0030] Specifically, the sliding interlocking convex sleeve 5 is provided with a protrusion 51 , which is in contact with or engaged with the recessed portion 111 of the fixed interlocking convex sleeve 11 , and when in contact with or engaged with, the rotation of the bevel gear mechanism 2 is restricted.

[0031] Specifically, when the rear door interlocking mechanism 9 is opened, the tension spring 7 is pulled as if Figure 2 As shown, the limiting guide block 4, the sliding interlocking convex sleeve 5 and the interlocking rod 6 are welded to form a new component, so that the convex portion of the sliding interlocking convex sleeve 5 is meshed with the concave portion of the fixed interlocking concave sleeve 11, the bevel gear mechanism 2 cannot rotate, and the grounding switch 1 cannot be opened.

[0032] When the opening operation is required, the new component slides to make the raised portion of the sliding interlocking convex sleeve 5 engage and disengage with the recessed portion of the fixed interlocking concave sleeve 11 . At this time, the bevel gear mechanism 2 can rotate to perform the opening operation of the grounding switch 1 .

[0033] The rear door of the cabinet can be opened only when the grounding switch is in the closed state; the grounding switch can be opened only when the rear door of the cabinet is closed.

[0034] The basic principles and main features of the invention and the advantages of the invention are shown and described above.

[0035] Those skilled in the art should understand that the present invention is not limited to the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A bevel gear transmission grounding switch and switch cabinet rear door interlocking device, characterized in that: include: A locking assembly, the locking assembly comprising a connecting rod, a grounding mounting end of the connecting rod being provided with a limit guide block and a sliding locking convex sleeve; The lower end of the limit guide block is installed in contact with the outer peripheral surface of the sliding interlocking convex sleeve; The rear door interlocking installation end of the connecting rod is hooked to one end of the grounding switch connecting hook through a tension spring; A rear door interlocking mechanism is fixed on the other end of the grounding switch connecting hook; A bevel gear mechanism is provided on the side of the grounding switch; The side of the bevel gear mechanism is provided with a fixed interlocking convex sleeve through a movably installed connecting pin, the sliding interlocking convex sleeve is sleeved on the connecting pin and the sliding distance of the sliding interlocking convex sleeve along the connecting pin is limited by the fixed interlocking convex sleeve at the end; The limiting guide block cooperates with the guide member with the slide groove to perform limiting guiding.

2. The interlocking device of the bevel gear transmission grounding switch and the rear door of the switch cabinet according to claim 1, characterized in that: The sliding interlocking convex sleeve is provided with a convex portion, which is in contact and meshed with or disengaged from the concave portion of the fixed interlocking convex sleeve. When in contact and meshed, the rotation of the bevel gear mechanism is restricted.

3. The interlocking device of the bevel gear transmission grounding switch and the rear door of the switch cabinet according to claim 1, characterized in that: The guide member with the slide groove is a slide groove bent plate with a first slide groove and a second slide groove arranged up and down.

4. The interlocking device of the bevel gear transmission grounding switch and the rear door of the switch cabinet according to claim 1, characterized in that: The rear door interlocking mechanism is installed at the rear door of the switch cabinet.

5. The interlocking device of the bevel gear transmission grounding switch and the rear door of the switch cabinet as claimed in claim 1, characterized in that: A mounting hole for mounting the tension spring is provided at the rear door interlock mounting end of the connecting rod.

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