High-voltage switch cabinet capable of safely opening rear window

Abstract

The utility model relates to a high-voltage switch cabinet capable of safely opening a rear window. The high-voltage switch cabinet comprises a high-voltage switch cabinet body and a linkage mechanism arranged in the high-voltage switch cabinet body, an openable rear view window is arranged in the window of the high-voltage switch cabinet body, and a pin hole is formed in the rear view window; the linkage mechanism comprises a linkage rod and a positioning pin, one end of the linkage rod is fixedly connected with a trolley switch of the high-voltage switch cabinet body, the other end of the linkage rod is connected with the positioning pin, and the positioning pin is detachably connected with the pin hole. If the trolley switch is in a closed state, the positioning pin is inserted into the pin hole to be locked, so that the rear view window cannot be opened, the trolley switch needs to be opened firstly, and the linkage rod is driven to move outwards in the process that the trolley switch is pulled out to be opened, so that the positioning pin is driven to be separated from the pin hole, and the rear view window can be safely opened for electricity testing; live indication judgment or on-site electricity testing is not needed, operation is simple, and electric shock risks and misjudgment caused by faults are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to a high-voltage switch cabinet with a rear window that can be safely opened. Background Art

[0002] In the operation of the power system, high-voltage switchgear is a common electrical equipment. The rear window of the high-voltage switchgear is used to observe the operating conditions of the load side of the switch. When the load needs to be shut down for maintenance, the grounding switch must be closed after the trolley switch is opened to prevent accidental startup of electrical equipment or discharge caused by static electricity accumulation, and to ensure the personal safety of maintenance personnel. Relevant regulations stipulate that an electrical test must be performed before closing the grounding switch to prevent the grounding switch from being mistakenly closed while energized, causing serious equipment damage and personal injury. However, since the rear door of the high-voltage switchgear cannot be opened before the grounding switch is closed, it is impossible to test the electricity by opening the rear door. The existing operating procedures are to use the live indication or to conduct on-site electrical testing. The live indication may fail and lead to misjudgment, and on-site electrical testing requires the removal and installation of the equipment cover, which is cumbersome and poses a risk of electric shock. Utility Model Content

[0003] The technical problem to be solved by the present invention is to provide a high-voltage switch cabinet with a rear window that can be opened safely, so as to overcome the deficiencies in the above-mentioned prior art.

[0004] The utility model provides a technical solution for solving the above-mentioned technical problems as follows: a high-voltage switch cabinet with a rear view window that can be safely opened, comprising a high-voltage switch cabinet body and a linkage mechanism arranged in the high-voltage switch cabinet body; a window is provided on the rear cabinet door of the high-voltage switch cabinet body, an openable rear view window is provided in the window, and a pin hole is provided on the rear view window; the linkage mechanism comprises a linkage rod and a positioning pin, one end of the linkage rod is fixedly connected to the trolley switch of the high-voltage switch cabinet body, and the other end of the linkage rod is connected to the positioning pin, and the positioning pin is detachably connected to the pin hole.

[0005] The beneficial effect of the present invention is that when an electrical test is required, if the trolley switch is in the closed state, the positioning pin is inserted into the pin hole and locked, so that the rear view window cannot be opened. The trolley switch needs to be opened first. When the trolley switch is pulled out and opened, the linkage rod is driven to move outward, thereby driving the positioning pin out of the pin hole. At this time, the rear view window can be safely opened for an electrical test. There is no need to judge by the live indication or to test the electricity on site. The operation is simple and avoids the risk of electric shock and misjudgment caused by faults.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the linkage rod includes an inner rod and an outer rod, the inner rod is telescopically adjustable within the outer rod, and a magnet is provided at the distal end of the inner rod; an accommodating cavity is provided on the rear door of the high-voltage switchgear body and above the window, a positioning pin is provided in the accommodating cavity, and an insertion hole for the inner rod to be inserted into the side wall of the accommodating cavity is provided;

[0008] The locating pin includes a pin head, a C-shaped connecting rod and a positioning rod. The lower end of the C-shaped connecting rod is connected to the upper end of the pin head, the upper end of the C-shaped connecting rod is connected to the middle part of the positioning rod, and a metal block is connected to the bottom of the positioning rod. A telescopic hole is provided through the bottom wall of the accommodating cavity, and a positioning hole is provided on the top wall of the accommodating cavity. The pin head passes through the telescopic hole and is detachably connected to the pin hole. The upper end of the positioning rod is movably provided in the positioning hole, and the magnet is magnetically connected to the metal block.

[0009] Furthermore, a limiting ring is provided above the pin head, a return spring is sleeved on the pin head, and the return spring is provided between the limiting ring and the bottom wall of the accommodating cavity.

[0010] Furthermore, a compression spring is provided in the outer rod, and two ends of the compression spring are connected to the inner rod and the outer rod respectively.

[0011] Furthermore, a slide groove is provided on the upper end surface of the inner rod, and the slide groove is sealed near one end of the outer rod. A limit column is provided on the inner top wall of the outer rod, and the limit column slides in the slide groove.

[0012] Furthermore, the rear view window includes a window frame and a transparent plate arranged in the middle of the window frame, and the pin hole is arranged at the top of the window frame.

[0013] Furthermore, a handle is provided on the outside of the rearview window.

[0014] Furthermore, the rear view window is rotatably arranged or horizontally slidable within the window. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the partial cross-sectional structure of the utility model Figure 1 ;

[0017] Figure 3 This is a schematic diagram of the positioning pin structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the partial cross-sectional structure of the utility model Figure 2 ;

[0019] Figure 5 This is a schematic diagram of the partial cross-sectional structure of the utility model Figure 3 .

[0020] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0021] 1. High-voltage switchgear body; 11. Window; 12. Rear view window; 121. Window frame; 1211. Pin hole; 122. Transparent plate; 123. Handle; 13. Trolley switch; 14. Accommodating chamber; 141. Telescopic hole; 142. Positioning hole; 143. Insertion hole; 2. Linkage mechanism; 21. Linkage rod; 211. Inner rod; 2111. Slide groove; 212. Outer rod; 2121. Limiting column; 213. Magnet; 214. Compression spring; 22. Locating pin; 221. Pin head; 222. C-shaped connecting rod; 223. Positioning rod; 224. Metal block; 225. Limiting ring; 226. Return spring. DETAILED DESCRIPTION

[0022] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0023] like Figures 1 to 5 As shown, embodiment 1, a high-voltage switchgear with a rear window that can be safely opened, includes a high-voltage switchgear body 1 and a linkage mechanism 2 arranged in the high-voltage switchgear body 1; a window 11 is provided on the rear cabinet door of the high-voltage switchgear body 1, an openable rear window 12 is provided in the window 11, and a pin hole 1211 is provided on the rear window 12; the linkage mechanism 2 includes a linkage rod 21 and a positioning pin 22, one end of the linkage rod 21 is fixedly connected to the trolley switch 13 of the high-voltage switchgear body 1, and the other end of the linkage rod 21 is connected to the positioning pin 22, and the positioning pin 22 is detachably connected to the pin hole 1211.

[0024] When it is necessary to test the electricity, if the trolley switch 13 is in the closed state, the positioning pin 22 is inserted into the pin hole 1211 and locked, so that the rear view window 12 cannot be opened. The trolley switch 13 needs to be opened first. In the process of pulling out the trolley switch 13 to open, the linkage rod 21 moves outward, thereby driving the positioning pin 22 out of the pin hole 1211. At this time, the rear view window 12 can be safely opened for electricity testing. There is no need to judge by the power indication or go to the local electricity test. The operation is simple, avoiding the risk of electric shock and misjudgment caused by faults.

[0025] In a specific implementation, the rear window 12 and the window 11 can be connected by magnet adsorption, so that the rear window 12 is in a tightly closed state when the trolley switch 13 is closed, to avoid the rear window 12 not being tightly closed so that the positioning pin 22 cannot extend into the pin hole 1211.

[0026] Example 2: This example is a further improvement on Example 1, and its details are as follows:

[0027] The linkage rod 21 includes an inner rod 211 and an outer rod 212. The inner rod 211 is telescopically adjustable within the outer rod 212. A magnet 213 is provided at the distal end of the inner rod 211. An accommodating cavity 14 is defined on the rear door of the high-voltage switchgear body 1 and above the window 11. A positioning pin 22 is disposed within the accommodating cavity 14. An insertion hole 143 is defined on the side wall of the accommodating cavity 14 for the inner rod 211 to extend into.

[0028] The positioning pin 22 includes a pin head 221, a C-shaped connecting rod 222 and a positioning rod 223. The lower end of the C-shaped connecting rod 222 is connected to the upper end of the pin head 221, and the upper end of the C-shaped connecting rod 222 is connected to the middle of the positioning rod 223. A metal block 224 is connected to the bottom of the positioning rod 223. The bottom wall of the accommodating cavity 14 is penetrated by a telescopic hole 141, and the top wall of the accommodating cavity 14 is provided with a positioning hole 142. The pin head 221 penetrates the telescopic hole 141 and is detachably connected to the pin hole 1211. The upper end of the positioning rod 223 is movably set in the positioning hole 142, and the magnet 213 is magnetically connected to the metal block 224.

[0029] In a normal state, the rear view window 12 is in a closed state, the linkage rod 21 is in a retracted state, the inner rod 211 extends from the insertion hole 143 into the accommodating cavity 14, and under the action of the magnet 213, the metal block 224 is attracted, causing the positioning pin 22 to move downward, and the pin head 221 is inserted into the positioning hole 142 and locked; when the trolley switch 13 is opened, the outer rod 212 is driven to move, and the linkage rod 21 is extended. When the linkage rod 21 is extended to its maximum length, it drives the inner rod 211 out of the accommodating cavity 14, the magnet 213 is separated from the metal block 224, the positioning pin 22 is reset, and the pin head 221 is separated from the pin hole 1211 to be unlocked. At this time, the rear view window 12 can be safely opened for electrical testing;

[0030] The telescopic setting of the linkage rod 21 allows the rear window 12 to be unlocked only when the trolley switch 13 is fully opened, which is safer and more reliable and can prevent the pin head 221 from being disengaged from the pin hole 1211 when the trolley switch 13 is just pulled out.

[0031] Example 3: This example is a further improvement on Example 2, and its details are as follows:

[0032] A limit ring 225 is provided above the pin head 221, and a return spring 226 is sleeved on the pin head 221. The return spring 226 is arranged between the limit ring 225 and the bottom wall of the accommodating chamber 14. After the trolley switch 13 is opened, the positioning pin 22 can be immediately reset, and the pin head 221 is disengaged from the pin hole 1211, thereby unlocking the pin head 221 for subsequent operations.

[0033] Example 4: This example is a further improvement on Example 2, and its details are as follows:

[0034] A compression spring 214 is disposed within the outer rod 212, with both ends of the compression spring 214 connected to the inner rod 211 and the outer rod 212, respectively. The compression spring 214 ensures that the inner rod 211 remains locked within the accommodating cavity 14 until the linkage rod 21 reaches its maximum length, providing increased safety and reliability, and preventing the pin head 221 from disengaging from the pin hole 1211 upon removal of the trolley switch 13.

[0035] Example 5: This example is a further improvement on Example 4, and its details are as follows:

[0036] A slot 2111 is provided on the upper end surface of the inner rod 211. The slot 2111 is sealed at one end near the outer rod 212. A limit post 2121 extends downward from the inner top wall of the outer rod 212. The limit post 2121 slides within the slot 2111. This prevents the inner rod 211 from completely separating from the outer rod 212 due to the magnet 213 attracting the metal block 224 when the linkage rod 21 is extended.

[0037] Example 6: This example is a further improvement on Example 1, and its details are as follows:

[0038] The rear view window 12 includes a window frame 121 and a transparent plate 122 disposed in the middle of the window frame 121. The pin hole 1211 is disposed at the top of the window frame 121. In a specific implementation, the transparent plate 122 can be a plastic plate or a glass plate.

[0039] Example 7: This example is a further improvement on Example 1, and its details are as follows:

[0040] A handle 123 is provided on the outside of the rearview window 12 so as to open the rearview window 12 after unlocking.

[0041] Example 8: This example is a further improvement on Example 1, and its details are as follows:

[0042] The rear window 12 is rotatably disposed or horizontally slidably disposed within the window 11 .

[0043] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A high-voltage switchgear with a rear window that can be safely opened, characterized in that: The invention comprises a high-voltage switch cabinet body (1) and a linkage mechanism (2) arranged in the high-voltage switch cabinet body (1); a window (11) is provided on the rear cabinet door of the high-voltage switch cabinet body (1); an openable rear view window (12) is provided in the window (11); and a pin hole (1211) is provided on the rear view window (12); the linkage mechanism (2) comprises a linkage rod (21) and a positioning pin (22); one end of the linkage rod (21) is fixedly connected to the trolley switch (13) of the high-voltage switch cabinet body (1); the other end of the linkage rod (21) is connected to the positioning pin (22); and the positioning pin (22) is detachably connected to the pin hole (1211).

2. The high-voltage switchgear with a rear window that can be safely opened according to claim 1, characterized in that: The linkage rod (21) comprises an inner rod (211) and an outer rod (212), the inner rod (211) being telescopically adjustable within the outer rod (212), and a magnet (213) being provided at the distal end of the inner rod (211); an accommodating cavity (14) is provided on the rear cabinet door of the high-voltage switch cabinet body (1) and above the window (11); the positioning pin (22) is provided in the accommodating cavity (14), and an insertion hole (143) for the inner rod (211) to be inserted is provided on a side wall of the accommodating cavity (14); The positioning pin (22) comprises a pin head (221), a C-shaped connecting rod (222) and a positioning rod (223); the lower end of the C-shaped connecting rod (222) is connected to the upper end of the pin head (221); the upper end of the C-shaped connecting rod (222) is connected to the middle of the positioning rod (223); a metal block (224) is connected below the positioning rod (223); a telescopic hole (141) is provided through the bottom wall of the accommodating cavity (14); a positioning hole (142) is provided on the top wall of the accommodating cavity (14); the pin head (221) passes through the telescopic hole (141) and is detachably connected to the pin hole (1211); the upper end of the positioning rod (223) is movably arranged in the positioning hole (142); and the magnet (213) is magnetically connected to the metal block (224).

3. The high-voltage switchgear with a rear window that can be safely opened according to claim 2, characterized in that: A limiting ring (225) is provided above the pin head (221), a return spring (226) is sleeved on the pin head (221), and the return spring (226) is provided between the limiting ring (225) and the bottom wall of the accommodating cavity (14).

4. The high-voltage switchgear with a rear window that can be safely opened according to claim 2, characterized in that: A compression spring (214) is provided inside the outer rod (212), and two ends of the compression spring (214) are respectively connected to the inner rod (211) and the outer rod (212).

5. The high-voltage switchgear with a rear window that can be safely opened according to claim 4, characterized in that: The upper end surface of the inner rod (211) is provided with a sliding groove (2111), and the sliding groove (2111) is sealed near one end of the outer rod (212). A limiting column (2121) is provided on the inner top wall of the outer rod (212) extending downward, and the limiting column (2121) slides in the sliding groove (2111).

6. The high-voltage switchgear with a rear window that can be safely opened according to claim 1, characterized in that: The rear view window (12) comprises a window frame (121) and a transparent plate (122) arranged in the middle of the window frame (121), and the pin hole (1211) is arranged at the top of the window frame (121).

7. The high-voltage switchgear with a rear window that can be safely opened according to claim 1, characterized in that: A handle (123) is provided on the outside of the rear window (12).

8. The high-voltage switchgear with a rear window that can be safely opened according to claim 1, characterized in that: The rear view window (12) is rotatably arranged or horizontally slid within the window (11).

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