High-voltage cabinet cable chamber door interlocking structure

Abstract

The utility model discloses a high-voltage cabinet cable chamber door interlocking structure, which comprises an operation handle transmission gear, an operation handle bolt shaft, a rack, a cable chamber locking rod and a cable chamber door opening interlocking device, the beneficial effects of the utility model are that through the cable chamber locking rod and the cable chamber door opening interlocking device, mechanical forced locking is realized, when equipment is in a running state, a cable chamber door of a high-voltage cabinet cannot be opened, and the cable chamber door can be opened only when a grounding switch is in a closed state; and maintenance work is carried out. And after the front door is opened, opening and closing operation cannot be carried out, so that electrical misoperation is prevented. The cable chamber locking rod can rotate freely, cannot be blocked, and is convenient to install, simple to debug and high in reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to an interlocking structure for a cable room door of a high-voltage cabinet. Background Art

[0002] High-voltage distribution cabinets are electrical products with voltage levels ranging from 3.6kV to 550kV, used for switching, controlling, or protecting power generation, transmission, distribution, conversion, and consumption in power systems. These products primarily include high-voltage circuit breakers, high-voltage disconnectors and earthing switches, high-voltage load switches, high-voltage automatic reclosers and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof distribution equipment, and high-voltage switchgear. The high-voltage switchgear manufacturing industry is a crucial component of the power transmission and transformation equipment manufacturing industry and holds a crucial position within the entire power industry.

[0003] The door of the distribution cabinet requires an interlocking device to facilitate the opening and closing of the distribution cabinet. Most of the interlocking devices currently on the market use a relatively complex connecting rod mechanism. This mechanism is often complex in structure and relies on the relative transmission between the connecting rod arms to achieve interlocking. However, it is prone to failure during actual movement, and its structure is not easy to install and debug.

[0004] Therefore, a high-voltage cabinet cable room door interlocking structure is urgently needed to solve the above problems. Utility Model Content

[0005] In order to solve the above problems, the present invention provides a high-voltage cabinet cable room door interlocking structure, which is achieved through the following technical solutions.

[0006] A high-voltage cabinet cable room door interlocking structure includes an operating handle transmission gear and an operating handle latch shaft, and the operating handle latch shaft is fixedly connected to a certain part of the operating handle transmission gear. It also includes a rack, a cable room locking rod and a cable room door opening interlocking device. One end of the rack is fixed on the cable room locking rod. The cable room door opening interlocking device includes a cable room interlocking rod, an upper positioning sleeve, a bidirectional torsion spring and a lower positioning sleeve.

[0007] Furthermore, one end of the cable room interlocking rod is provided with a cable room interlocking rod upper limit position, the other end of the cable room interlocking rod is provided with a cable room interlocking rod lower contact, and the outer surface of one end of the cable room interlocking rod is provided with an upper spring positioning plate.

[0008] Furthermore, the upper positioning sleeve is provided with a sleeve 1 and a lower spring positioning plate, and one end of the lower spring positioning plate is fixedly connected to the outer surface of the sleeve 1, and the cable chamber interlocking rod is rotatably connected to the upper positioning sleeve through the sleeve 1.

[0009] Furthermore, the bidirectional torsion spring is provided with an upper torsion spring contact and a lower torsion spring contact, and the upper torsion spring contact is supported on the upper spring positioning plate, and the lower torsion spring contact is supported on the lower spring positioning plate.

[0010] Furthermore, a second shaft sleeve is provided on the lower positioning sleeve, and the cable chamber interlocking rod is rotatably connected to the lower positioning sleeve through the second shaft sleeve.

[0011] The beneficial effect of this utility model is that during operation, the cable compartment locking lever and the cable compartment door interlock device achieve mechanical forced locking. When the equipment is in operation, the high-voltage cabinet cable compartment door cannot be opened. Only when the grounding switch is closed can the cable compartment door be opened for maintenance. Furthermore, when the front door is open, opening and closing operations cannot be performed, thereby preventing electrical misoperation. The cable compartment locking lever rotates freely and will not get stuck. Furthermore, the device is easy to install, simple to debug, and highly reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for use in the description of the specific implementation methods. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 : A schematic structural diagram of a high-voltage cabinet cable room door interlocking structure according to the present invention;

[0014] Figure 2 : Schematic diagram of the connection between the cable chamber interlocking rod, upper positioning sleeve, bidirectional torsion spring and lower positioning sleeve of the utility model;

[0015] Figure 3 : The utility model Figure 2 Side view of;

[0016] Figure 4 : The utility model Figure 3 A magnified view of middle A;

[0017] Figure 5 : Schematic diagram of the connection between the upper contact and the lower contact of the torsion spring of the utility model;

[0018] Figure 6 : Schematic diagram of the connection between the upper limit position of the cable compartment interlocking rod, the lower contact of the cable compartment interlocking rod and the upper spring positioning plate of the utility model;

[0019] Figure 7 : Schematic diagram of the connection between the upper positioning sleeve and the lower spring positioning plate of the utility model;

[0020] Figure 8: The structural representation of the lower positioning sleeve of the utility model.

[0021] The reference numerals are as follows:

[0022] 6. Operating handle transmission gear;

[0023] 7. Operating handle latch shaft;

[0024] 23. Rack;

[0025] 24. Cable compartment locking lever;

[0026] 26. Cable room door interlock device;

[0027] 2601, cable compartment interlocking rod; 26011, cable compartment interlocking rod upper limit position; 26012, cable compartment interlocking rod lower contact; 26013, upper spring positioning plate;

[0028] 2602, upper positioning sleeve; 26021, shaft sleeve 1; 26022, lower spring positioning plate;

[0029] 2603, bidirectional torsion spring; 26031, torsion spring upper contact; 26032, torsion spring lower contact;

[0030] 2604, lower positioning sleeve; 26041, shaft sleeve 2. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] like Figure 1-8 As shown, the utility model has the following specific embodiments.

[0033] Example:

[0034] A high-voltage cabinet cable room door interlocking structure includes an operating handle transmission gear 6 and an operating handle latch shaft 7, and the operating handle latch shaft 7 is fixedly connected to a certain part of the operating handle transmission gear 6. It also includes a rack 23, a cable room locking rod 24 and a cable room door opening interlocking device 26. One end of the rack 23 is fixed on the cable room locking rod 24. The cable room door opening interlocking device 26 includes a cable room interlocking rod 2601, an upper positioning sleeve 2602, a bidirectional torsion spring 2603 and a lower positioning sleeve 2604.

[0035] Specifically, one end of the cable room interlocking rod 2601 is provided with a cable room interlocking rod upper limit position 26011, the other end of the cable room interlocking rod 2601 is provided with a cable room interlocking rod lower contact 26012, and the outer surface of one end of the cable room interlocking rod 2601 is provided with an upper spring positioning plate 26013;

[0036] The upper positioning sleeve 2602 is provided with a shaft sleeve 26021 and a lower spring positioning plate 26022, and one end of the lower spring positioning plate 26022 is fixedly connected to the outer surface of the shaft sleeve 26021. The cable chamber interlocking rod 2601 is rotatably connected to the upper positioning sleeve 2602 through the shaft sleeve 26021.

[0037] The bidirectional torsion spring 2603 is provided with an upper torsion spring contact 26031 and a lower torsion spring contact 26032 , wherein the upper torsion spring contact 26031 is supported on the upper spring positioning plate 26013 , and the lower torsion spring contact 26032 is supported on the lower spring positioning plate 26022 ;

[0038] A second shaft sleeve 26041 is provided on the lower positioning sleeve 2604 , and the cable chamber interlocking rod 2601 is rotatably connected to the lower positioning sleeve 2604 through the second shaft sleeve 26041 .

[0039] The working principle of this utility model:

[0040] When the high-voltage cabinet needs to be repaired, the maintenance personnel open the cable room door, and the cable room door loses its pressure on the lower contact 26012 of the cable room interlocking rod. At this time, the previously stressed bidirectional torsion spring 2603 begins to drive the upper spring positioning plate 26013 to move, thereby rotating the cable room interlocking rod 2601. At the same time, the upper limit position 26011 of the cable room interlocking rod rotates to the locked position, that is, below the rack 23. Because the upper limit position 26011 of the cable room interlocking rod blocks the movement path of the rack 23. Since the rack 23 cannot slide, the operating handle transmission gear 6 that is meshed with it cannot rotate either. At this time, personnel cannot perform opening and closing operations through the operating handle latch shaft 7. This prevents misoperation and ensures the safety of maintenance work.

[0041] When the high-voltage cabinet needs to be closed, the cable compartment door must be closed. When the cable compartment door is closed, pressure is applied to the lower contact 26012 of the cable compartment interlocking rod. This lower contact 26012 begins to move the upper spring positioning plate 26013, causing the cable compartment interlocking rod 2601 to rotate. At this point, the bidirectional torsion spring 2603 begins to store energy, and the upper limit position 26011 of the cable compartment interlocking rod rotates to the unlocked position. At this point, the operator can use the operating handle latch shaft 7 to rotate the operating handle transmission gear 6, driving the rack 23 downward, thereby performing the opening and closing operations.

[0042] When the rack 23 starts to move downward, the cable chamber locking rod 24 fixed thereon moves downward together, thereby locking the cable chamber door. At this time, the cable chamber cannot be opened.

[0043] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-voltage cabinet cable room door interlocking structure, comprising an operating handle transmission gear (6) and an operating handle latch shaft (7), wherein the operating handle latch shaft (7) is fixedly connected to a certain part of the operating handle transmission gear (6), characterized in that: The invention also includes a rack (23), a cable chamber locking rod (24) and a cable chamber door opening interlocking device (26), wherein one end of the rack (23) is fixed on the cable chamber locking rod (24), and the cable chamber door opening interlocking device (26) includes a cable chamber interlocking rod (2601), an upper positioning sleeve (2602), a bidirectional torsion spring (2603) and a lower positioning sleeve (2604).

2. The high-voltage cabinet cable room door interlocking structure according to claim 1, characterized in that: One end of the cable chamber interlocking rod (2601) is provided with a cable chamber interlocking rod upper limit position (26011), the other end of the cable chamber interlocking rod (2601) is provided with a cable chamber interlocking rod lower contact (26012), and the outer surface of one end of the cable chamber interlocking rod (2601) is provided with an upper spring positioning plate (26013).

3. The high-voltage cabinet cable room door interlocking structure according to claim 2, characterized in that: The upper positioning sleeve (2602) is provided with a shaft sleeve (26021) and a lower spring positioning plate (26022), and one end of the lower spring positioning plate (26022) is fixedly connected to the outer surface of the shaft sleeve (26021), and the cable chamber interlocking rod (2601) is rotatably connected to the upper positioning sleeve (2602) through the shaft sleeve (26021).

4. The high-voltage cabinet cable room door interlocking structure according to claim 3, characterized in that: The bidirectional torsion spring (2603) is provided with an upper torsion spring contact (26031) and a lower torsion spring contact (26032), and the upper torsion spring contact (26031) is supported on the upper spring positioning plate (26013), and the lower torsion spring contact (26032) is supported on the lower spring positioning plate (26022).

5. The high-voltage cabinet cable room door interlocking structure according to claim 4, characterized in that: A second shaft sleeve (26041) is provided on the lower positioning sleeve (2604), and the cable chamber interlocking rod (2601) is rotatably connected to the lower positioning sleeve (2604) through the second shaft sleeve (26041).

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