Three-position switch operating mechanism and breaker manual operation locking device

Abstract

The invention discloses a three-position switch operating mechanism and a breaker manual operation locking device, and is characterized in that the three-position switch operating mechanism comprises a three-position operating mechanism which is provided with a program lock; on the program lock, pressing or releasing of an interlocking rod is controlled through a lock plate to limit or not limit an operation hole sliding door plate; the tail end of the interlocking rod is connected with the adjusting block; the adjusting block is connected with the end of the connecting pull rod; the connecting pull rod penetrates through a reset spring, and the state of the interlocking rod is reset through the reset spring when the program lock is unlocked. An interlocking connecting plate is arranged at the lower end of the connecting pull rod; a closing locking sliding plate and an opening locking sliding plate are symmetrically arranged on the interlocking connecting plate; the closing and locking slide plate is arranged on the circuit breaker support plate through a first guide structure; the opening locking slide plate is arranged on the circuit breaker support plate through a second guide structure. The closing locking slide plate is provided with a closing baffle plate used for blocking or releasing the closing button. The opening locking slide plate is provided with an opening baffle plate used for blocking or releasing the opening button. According to the invention, the program lock is adopted to connect the manual operation functions of the vacuum circuit breaker and the three-position switch together to allow or prohibit operation, padlocks are reduced, the program lock can realize more interlocking functions at the same time, the higher safety operation requirements of customers are better met, and the possibility of misoperation of the switch cabinet is reduced. Functions can be realized by adding a small number of parts on the basis of the original three-position operating mechanism and circuit breaker, the cost is low, and the function is reliable.

Description

Technical Field

[0001] The invention relates to the field of gas-insulated metal-enclosed switchgear manufacturing, and in particular to a three-position switch operating mechanism and a circuit breaker manual operation locking device. Background Art Summary of the invention

[0002] In order to overcome the above-mentioned defects of the prior art, an object of the present invention is to provide a three-position switch operating mechanism and a circuit breaker manual operation locking device.

[0003] In order to achieve the purpose of the present invention, the technical solution adopted is:

[0004] A three-position switch operating mechanism and a circuit breaker manual operation locking device, comprising:

[0005] a three-station operating mechanism, on which a program lock is provided;

[0006] On the program lock, the locking plate is used to control the depression or release of the interlocking rod to limit or not limit the operation of the sliding door plate of the hole;

[0007] The end of the interlocking rod is connected to the adjustment block;

[0008] The adjusting block is connected to the end of the connecting rod;

[0009] The connecting rod passes through a reset spring, and the reset spring resets the state of the interlocking rod when the program lock is unlocked;

[0010] An interlocking connection plate is provided at the lower end of the connecting rod;

[0011] The interlocking connection plate is symmetrically provided with a closing locking slide plate and an opening locking slide plate;

[0012] The closing locking slide plate is arranged on the circuit breaker support plate through a first guide structure;

[0013] The opening locking slide plate is arranged on the circuit breaker support plate through a second guide structure;

[0014] A closing baffle for blocking or releasing the closing button is arranged on the closing locking slide;

[0015] A gate opening baffle plate for blocking or releasing a gate opening button is arranged on the gate opening locking slide plate.

[0016] In a preferred embodiment of the present invention, the program lock is arranged on the three-station operating mechanism via a program lock mounting plate.

[0017] In a preferred embodiment of the present invention, the interlocking rod is disposed in a guide sleeve, a guide groove for up and down movement is provided in the guide sleeve, and the interlocking rod moves up and down along the guide groove by a limiting guide block matched with the guide groove.

[0018] In a preferred embodiment of the present invention, a first sliding groove for the closing and locking slide plate to slide up and down is provided in the first guide structure.

[0019] In a preferred embodiment of the present invention, a second sliding groove for the gate opening locking slide plate to slide up and down is provided in the second guide structure.

[0020] The beneficial effects of the present invention are:

[0021] The present invention uses a program lock to connect the manual operation functions of the vacuum circuit breaker and the three-position switch to allow or prohibit operation. While reducing padlocks, the program lock can achieve more interlocking functions, better meet customers' higher safety operation requirements, and reduce the possibility of misoperation of the switch cabinet. The function can be realized by adding a small number of parts on the basis of the original three-position operating mechanism and circuit breaker, with low cost and reliable function. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 It is a schematic diagram of the use of the present invention (unlocked state).

[0024] Figure 3 It is a schematic diagram of the use of the present invention (locked state). 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 A three-position switch operating mechanism and a circuit breaker manual operation locking device shown include a three-position operating mechanism 100 on which a program lock 1 is arranged.

[0028] The program lock 1 is arranged on the three-station operating mechanism 100 via the program lock mounting plate 2 .

[0029] On the program lock 1 , the locking plate 3 is used to control the depression or release of the interlocking rod 5 to limit or not limit the operation hole sliding door plate 6 .

[0030] The interlocking rod 6 is arranged in the guide sleeve 4, and a guide groove for up and down movement is arranged in the guide sleeve 4. The interlocking rod 6 moves up and down along the guide groove through a limiting guide block (not shown in the figure) matched with the guide groove.

[0031] The end of the interlocking rod 5 is connected to the adjusting block 7, and the adjusting block 7 is connected to the end of the connecting rod 9. The connecting rod 9 passes through a reset spring 8, and the reset spring 8 resets the state of the interlocking rod 5 when the program lock 1 is unlocked.

[0032] An interlocking connecting plate 10 is provided at the lower end of the connecting rod 9 , and a closing locking slide plate 11 and an opening locking slide plate 12 are symmetrically provided on the interlocking connecting plate 10 .

[0033] The closing locking slide plate 11 is arranged on the circuit breaker support plate 200 through a first guide structure 15 , and the opening locking slide plate 12 is arranged on the circuit breaker support plate 200 through a second guide structure 16 .

[0034] A closing baffle 13 for blocking or releasing the closing button 300 is arranged on the closing locking slide 11 , and an opening baffle 14 for blocking or releasing the opening button 400 is arranged on the opening locking slide 12 .

[0035] A first sliding groove (not shown in the figure) for the closing and locking slide plate 11 to slide up and down is arranged in the first guide structure 15 .

[0036] A second sliding groove (not shown in the figure) for the gate opening locking slide plate 12 to slide up and down is arranged in the second guide structure 16 .

[0037] like Figure 2As shown, when the program lock 1 is in the unlocked position, the lock plate 3 is in the horizontal position, and the reset spring 8 supports the adjustment block 7. At this time, the interlocking rod 5 moves to the highest state under the restriction of the guide sleeve 4, and the closing locking slide plate 11 and the opening locking slide plate 12 slide to the highest state under the restriction of the first guide structure 15 and the second guide structure 16. In this state, the operating hole sliding door plate 6 is not restricted by the interlocking rod 5 and can slide freely to open the operating hole for manual operation of the mechanism; at the same time, the closing baffle 13 installed on the closing locking slide plate 11 and the opening baffle 14 installed on the opening locking slide plate 12 leave the position of blocking the circuit breaker opening and closing buttons, and manual opening and closing operations can be performed.

[0038] like Figure 3 As shown, when the program lock 1 is in the locked position, the lock plate 3 presses down the interlocking rod 5 and moves downward under the restriction of the guide sleeve 4, driving the adjustment block 7 together with the reset spring 8, the connecting rod 9, the interlocking connecting plate 10, the closing locking slide plate 11, and the opening locking slide plate 12 to move downward to the lower limit of the stroke.

[0039] At this time, the limit protrusion on the interlocking rod 5 blocks the limit position on the operating hole sliding door plate 6, the sliding door is locked, the operating door cannot be opened, and the mechanism cannot be manually operated; at the same time, the closing baffle 13 installed on the closing locking slide 11 and the opening baffle 14 installed on the opening locking slide 12 block the circuit breaker opening and closing button positions, and manual opening and closing operations cannot be performed.

[0040] In summary, the device can control the manual operation authority of the three-position operating mechanism and the circuit breaker at the same time with only one program lock. When the program lock is locked, the three-position operating mechanism and the circuit breaker cannot be manually operated at the same time. When the program lock is unlocked, the three-position operating mechanism and the circuit breaker can be manually operated. Moreover, the program lock can be combined with other interlocked program locks to form a mechanical interlock for more safety measures. The present invention provides a reliable interlocking structure that meets the five-protection interlocking requirements for switch cabinets, avoids the defects of traditional padlocks such as complex unlocking procedures for padlocks and easy loss of keys, etc. It has a simple structure and few parts, and can meet the requirements of substations for high reliability of the five-protection interlocking of switch cabinets.

[0041] The basic principles and main features of the invention and the advantages of the invention are shown and described above.

[0042] 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 three-position switch operating mechanism and a circuit breaker manual operation locking device, characterized in that: include: a three-station operating mechanism, on which a program lock is provided; On the program lock, the locking plate is used to control the depression or release of the interlocking rod to limit or not limit the operation of the sliding door plate of the hole; The end of the interlocking rod is connected to the adjustment block; The adjusting block is connected to the end of the connecting rod; The connecting rod passes through a reset spring, and the reset spring resets the state of the interlocking rod when the program lock is unlocked; An interlocking connection plate is provided at the lower end of the connecting rod; The interlocking connection plate is symmetrically provided with a closing locking slide plate and an opening locking slide plate; The closing locking slide plate is arranged on the circuit breaker support plate through a first guide structure; The opening locking slide plate is arranged on the circuit breaker support plate through a second guide structure; A closing baffle for blocking or releasing the closing button is arranged on the closing locking slide; A gate opening baffle plate for blocking or releasing a gate opening button is arranged on the gate opening locking slide plate.

2. A three-position switch operating mechanism and a circuit breaker manual operation locking device as claimed in claim 1, characterized in that: The program lock is arranged on the three-station operating mechanism via a program lock mounting plate.

3. A three-position switch operating mechanism and a circuit breaker manual operation locking device as claimed in claim 1, characterized in that: The interlocking rod is arranged in a guide sleeve, a guide groove for up and down movement is arranged in the guide sleeve, and the interlocking rod moves up and down along the guide groove by a limiting guide block matched with the guide groove.

4. A three-position switch operating mechanism and a circuit breaker manual operation locking device as claimed in claim 1, characterized in that: A first sliding groove for the closing and locking slide plate to slide up and down is arranged in the first guide structure.

5. A three-position switch operating mechanism and a circuit breaker manual operation locking device as claimed in claim 1, characterized in that: A second sliding groove for the gate-opening locking slide plate to slide up and down is arranged in the second guide structure.

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