Electricity larceny prevention voltage transformer

Abstract

The utility model belongs to the field of electrical technology, in particular to an electricity larceny prevention voltage transformer, which comprises a transformer body and a wiring terminal, and further comprises a protective cover which is detachably connected with the transformer body through a mounting structure and covers the wiring terminal therein; the electricity larceny prevention mechanism comprises mounting bases arranged on the two sides of the protective cover respectively, a main lock rod vertically penetrating through the mounting bases and inserted into the mutual inductor body, an auxiliary lock rod transversely penetrating through the mutual inductor body and penetrating through the main lock rod, and anti-disassembly heads used for fixing the two ends of the auxiliary lock rod, and the anti-disassembly heads can be disassembled only through a special tool. According to the utility model, the wiring terminal is covered by the protective cover, and the convenience and the stability of the electricity larceny prevention structure are improved through the interlocking mechanism of the main lock rod and the auxiliary lock rod and the design of the anti-disassembly head disassembled by a special tool.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electrical technical field, especially a kind of anti-stealing electricity voltage transformer. BACKGROUND

[0002] Voltage transformer is the key equipment of power system, mainly used to be proportionally transformed into low voltage for high voltage, provides standard signal for electric energy metering instrument, relay protection device, safeguards measurement accuracy and system stable operation, widely used in various power supply scenes.

[0003] Although part of voltage transformer in prior art has anti-stealing electricity mechanism for wiring terminal, it either relies on electronic monitoring, electronic lock and other power means, loses protection function once power failure, interference or component failure, and needs additional power maintenance;Or it uses pure structure type protection, but there are problems of complex structure, cumbersome assembly and later maintenance operation, and it cannot form stable, reliable and convenient and practical anti-stealing electricity barrier, therefore, a voltage transformer anti-stealing electricity structure without relying on power and with simple structure and convenient operation is urgently needed. SUMMARY

[0004] The utility model discloses a protective cover is covered wiring terminal, and the main lock rod is vertically arranged in the installation seat and the mutual inductor body, and the auxiliary lock rod is transversely arranged in the main lock rod, and the anti-disassembly head is disassembled with special tool, physical locking mechanism is realized, to solve the problem mentioned in the above background.

[0005] The utility model discloses a kind of anti-stealing electricity voltage transformers, including mutual inductor body and wiring terminal, further comprising:

[0006] Protective cover, detachably connected with the mutual inductor body by installation structure, and the wiring terminal is covered in it;

[0007] Anti-stealing electricity mechanism, including installation seat being respectively arranged in the both sides of the protective cover, main lock rod being vertically arranged in the installation seat and being inserted into the mutual inductor body, auxiliary lock rod being transversely arranged in the mutual inductor body and being penetrated through the main lock rod, and anti-disassembly head for fixing the both ends of the auxiliary lock rod, the anti-disassembly head can only be disassembled by special tool.

[0008] The utility model further is provided with, the main lock rod is located in mutual inductor body and is divided into through-hole, the auxiliary lock rod is penetrated through this through-hole.

[0009] The utility model further is provided with, installation seat surface is equipped with static mark, the main lock rod is aligned static mark by being equipped with dynamic mark in top, so that through-hole is aligned auxiliary lock rod.

[0010] The utility model further is provided with, and the installation structure includes:

[0011] A guide rail is arranged on the protective cover;

[0012] A clamping groove is arranged on the transformer body and matched with the guide rail;

[0013] The protective cover is slid along the guide rail to the predetermined position.

[0014] The utility model further sets up, the anti -disassembly head is connected with the end of auxiliary lock rod threadedly, and the outer side is equipped with the operating part matched with special tool.

[0015] The utility model further sets up, the transformer body is equipped with the embedded groove of containing anti -disassembly head, and the groove wall of embedded groove is inlaid with the circumference side of anti -disassembly head.

[0016] The utility model further sets up, after the complete connection of anti -disassembly head and auxiliary lock rod, the outer surface is flush with the groove top of embedded groove.

[0017] Through adopting above-mentioned technical scheme, the utility model can obtain the beneficial effect of:

[0018] 1. through the cross interlocking of main lock rod and auxiliary lock rod, cooperation only can be through special tool dismounting's anti -disassembly head, forms pure physical locking mechanism, need not rely on electric power, has promoted the stability of anti -electricity larceny.

[0019] 2. through the sliding cooperation of guide rail on protective cover and transformer body clamping groove, the alignment design of collocation mounting seat static mark and main lock rod dynamic mark, has simplified the installation and lock rod positioning process of protective cover, has promoted the convenience of assembly and maintenance.

[0020] 3. through the protective cover completely covers the wiring terminal, combines main lock rod, auxiliary lock rod and anti -disassembly head and forms the integrated locking system, from the physical level, the path of illegal contact wiring terminal is blocked, and the safety of measurement circuit is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0022] Figure 2 It is the exploded structure schematic diagram of the utility model;

[0023] Figure 3 It is the A part enlarged structure schematic diagram of the utility model Figure 2 .

[0024] In the drawing, the reference signs are: 1, transformer body;2, protective cover;3, installation structure;30, guide rail;31, clamping groove;4, anti -electricity larceny mechanism;40, mounting seat;41, main lock rod;42, auxiliary lock rod;43, anti -disassembly head;5, through -hole;6, static mark;7, dynamic mark;8, operating part;9, embedded groove. DETAILED DESCRIPTION

[0025] The utility model will be further described below with specific examples in combination with the drawings, referring to Figures 1-3 :

[0026] Example 1

[0027] The embodiment provides a kind of anti-stealing electricity voltage transformer, including mutual inductor body 1 and terminal, further include:

[0028] Protective cover 2 is detachably connected with the mutual inductor body 1 by mounting structure 3, and the terminal is covered in it;

[0029] Anti-stealing electricity mechanism 4, including the mounting seat 40 respectively arranged in the two sides of the protective cover 2, the main lock rod 41 vertically passing through the mounting seat 40 and being inserted into the mutual inductor body 1, the auxiliary lock rod 42 horizontally passing through the mutual inductor body 1 and penetrating the main lock rod 41, and the anti-disassembly head 43 for fixing the two ends of the auxiliary lock rod 42, the anti-disassembly head 43 can only be disassembled by special tool.

[0030] Protective cover 2 is the protective component for physically isolating terminal, and its structure is closed or semi-closed cover body that is adapted to the shape of terminal area, and it is mainly used for blocking unauthorized personnel from directly contacting terminal;It is detachably connected with the mutual inductor body 1 by mounting structure 3, completely covers the outside of terminal, and is fixed after being mounted at predetermined position by mounting structure 3, so as to realize physical protection of terminal, prevent private connection of wire and tampering of terminal, and also can be conveniently disassembled during authorized maintenance without affecting normal operation.The predetermined position refers to that after the protective cover 2 is detachably connected with the mutual inductor body 1 by mounting structure 3, the mounting seat 40 is aligned with the preset hole position of the mutual inductor body 1.

[0031] Mounting structure 3 is used for realizing detachable connection of protective cover 2 and mutual inductor body 1, ensuring that the protective cover 2 can be stably installed at predetermined position, and facilitating disassembly.

[0032] Anti-stealing electricity mechanism 4 is mainly composed of mounting seat 40, main lock rod 41, auxiliary lock rod 42 and anti-disassembly head 43, and it is mainly used for forming reliable locking through mechanical interlocking to prevent unauthorized personnel from easily opening protective cover 2.

[0033] The mounting seat 40 is generally plate-shaped structure, and the surface is provided with through hole 5 for vertical passing of main lock rod 41, which is mainly used for guiding the installation direction of main lock rod 41 and providing stable support for it;It can be fixed on the two sides of protective cover 2 by integrally forming with protective cover 2, so as to ensure that main lock rod 41 can be accurately aligned with the hole position of mutual inductor body 1 when passing, avoid lock rod installation deviation, and lay a foundation for subsequent interlocking of main lock rod 41 and auxiliary lock rod 42.

[0034] The main lock rod 41 is a vertical locking component of the electricity larceny prevention mechanism 4, which is generally a high-strength rod-shaped structure made of stainless steel or alloy steel, and the portion located in the transformer body 1 is provided with a through hole 5 for the secondary lock rod 42 to pass through, which is mainly used to connect the protective cover 2 and the transformer body 1 to provide an interlocking basis for the secondary lock rod 42; it is vertically arranged in the through hole 5 of the mounting seat 40, and the lower end is inserted into the pre-set hole position in the transformer body 1, and is positioned by penetrating and cooperating with the mounting seat 40 and the transformer body 1. After cross interlocking with the secondary lock rod 42, the transverse and vertical movement of the protective cover 2 can be limited to prevent it from being illegally pried.

[0035] The secondary lock rod 42 is a horizontal locking component of the electricity larceny prevention mechanism 4, which is generally a high-strength rod-shaped structure as the main lock rod 41, and its shape is adapted to the through hole 5 penetrated by the main lock rod 41 to ensure that the secondary lock rod 42 can smoothly pass through the through hole 5, which is mainly used to horizontally penetrate the main lock rod 41 to form a cross interlocking with the main lock rod 41 to prevent the main lock rod 41 from being vertically pulled out; when the secondary lock rod 42 is horizontally arranged in the pre-set channel of the transformer body 1 and penetrates the through hole 5 of the main lock rod 41, the two ends of the secondary lock rod 42 are fixed by the anti-disassembly head 43, and after cooperating with the main lock rod 41, a mechanical interlocking is formed to make the main lock rod 41 unable to be taken out alone, thereby fixing the position of the protective cover 2 and enhancing the locking reliability.

[0036] The anti-disassembly head 43 is a component for fixing the secondary lock rod 42 and preventing illegal disassembly, and the end portion is provided with a non-universal shape adapted to a special tool, which is connected to the end of the secondary lock rod 42 and is mainly used to fix the two ends of the secondary lock rod 42 to ensure that only the special tool can disassemble it.

[0037] According to the above design, during assembly, the protective cover 2 is connected with the transformer body 1 through the mounting structure 3, so that the wiring terminal is completely covered; then the main lock rod 41 is vertically arranged through the mounting seat 40 on both sides of the protective cover 2, and the lower end is inserted into the transformer body 1; then the secondary lock rod 42 is horizontally arranged in the transformer body 1 and penetrates the through hole 5 of the main lock rod 41 to form a cross mechanical interlocking; finally, the two ends of the secondary lock rod 42 are fixed by the anti-disassembly head 43 to complete the overall locking.

[0038] At this time, the protective cover 2 is fixed by the interlocking structure of the main lock rod 41 and the secondary lock rod 42 and cannot be arbitrarily disassembled, and the wiring terminal is completely isolated; only by using a special tool to disassemble the anti-disassembly head 43 and remove the secondary lock rod 42 can the main lock rod 41 be pulled out, and then the protective cover 2 is removed through the mounting structure 3 to realize the authorized operation.

[0039] The main lock rod 41 is located in the through hole 5 in the transformer body 1, and the auxiliary lock rod 42 penetrates the through hole 5. The purpose of the above design is to form a mechanical interlocking structure between the through hole 5 on the main lock rod 41 and the auxiliary lock rod 42, and to limit the movement freedom of the main lock rod 41 and the auxiliary lock rod 42. After the main lock rod 41 is vertically inserted into the transformer body 1, the through hole 5 provides a penetration channel for the auxiliary lock rod 42. When the auxiliary lock rod 42 penetrates the through hole 5 transversely, the two form a cross-restricting relationship, the main lock rod 41 cannot be pulled out of the transformer body 1 vertically, and the auxiliary lock rod 42 cannot be pulled out of the transformer body 1 transversely, thereby locking the protective cover 2 and the transformer body 1 by the anti-theft mechanism 4. This structure can avoid the problem that a single lock rod is easy to pry or pull out, and ensures the stability of the locked state, physically prevents unauthorized personnel from opening the protective cover 2 by disassembling the main lock rod 41, and protects the wiring terminal from illegal contact.

[0040] The mounting seat 40 is provided with a static mark 6, and the main lock rod 41 is aligned with the static mark 6 by a dynamic mark 7 arranged on the top, so that the through hole 5 is aligned with the auxiliary lock rod 42. The purpose of the above design is to quickly and accurately realize the alignment of the through hole 5 of the main lock rod 41 and the auxiliary lock rod 42 when assembling the anti-theft mechanism 4, and to avoid the failure of the locking structure due to assembly deviation. The static mark 6 can be a marking with a specific shape such as a line, a protrusion or a triangle on the surface of the mounting seat 40, and is fixedly connected with the mounting seat 40 by integral molding or etching as a positioning reference; the dynamic mark 7 can be a protrusion, a colored area or a marking with a shape adapted to the static mark 6 on the top of the main lock rod 41, and is connected with the main lock rod 41 by integral molding or pasting, and rotates or moves synchronously with the main lock rod 41. When the main lock rod 41 is vertically inserted into the mounting seat 40, the operator only needs to align the dynamic mark 7 with the static mark 6, which can ensure that the through hole 5 of the main lock rod 41 in the transformer body 1 coincides with the installation path of the auxiliary lock rod 42, without the need for repeated adjustment or measurement, simplifying the assembly process, and ensuring that the main lock rod 41 and the auxiliary lock rod 42 can accurately form interlocking, avoiding the problem that the auxiliary lock rod 42 cannot penetrate due to misalignment of the hole position, affecting the locking effect of the anti-theft mechanism 4.

[0041] The mounting structure 3 comprises a guide rail 30 arranged on the protective cover 2 and a clamping groove 31 arranged on the transformer body 1 and matched with the guide rail 30, wherein the protective cover 2 slides along the clamping groove 31 to a predetermined position through the guide rail 30. The purpose of the above design is to realize stable and convenient detachable connection between the protective cover 2 and the transformer body 1, and to ensure that the protective cover 2 can accurately cover the wiring terminal. The guide rail 30 can be configured as a T-shaped long strip-shaped protrusion arranged on the edge of the protective cover 2 and connected with the protective cover 2 by integral molding, and the shape thereof needs to be matched with the clamping groove 31 to avoid deviation during sliding; the clamping groove 31 is configured as a long strip-shaped groove arranged at a corresponding position of the transformer body 1 and connected with the transformer body 1 by integral molding, and the length of the groove body needs to meet the travel requirement of the protective cover 2 sliding to the predetermined position. During assembly, the protective cover 2 slides along the groove direction of the clamping groove 31 through the guide rail 30 until it reaches the predetermined position covering the wiring terminal. This sliding and matching connection mode can ensure that the protective cover 2 is tightly attached to the transformer body 1 after installation and is not easy to loosen, and the protective cover 2 can be easily removed by reverse sliding during authorized maintenance without complex disassembly steps. Meanwhile, through the shape matching of the guide rail 30 and the clamping groove 31, position deviation of the protective cover 2 during installation is avoided, and it is ensured that the wiring terminal can be completely covered.

[0042] The anti-removal head 43 is threadedly connected with the end of the secondary lock rod 42, and an operating part 8 matched with a special tool is arranged outside the anti-removal head 43. The purpose of the above design is to ensure that the anti-removal head 43 is firmly connected with the secondary lock rod 42 and can only be disassembled by authorized operation, thereby ensuring the locking reliability of the anti-theft mechanism 4. The anti-removal head 43 is threadedly connected with the end of the secondary lock rod 42. Compared with the buckle connection and welding connection, the threaded connection has the advantages of being detachable and stable in connection strength, which avoids the problem that the buckle connection is easy to loosen due to vibration and solves the defect that the welding connection cannot be disassembled and is not conducive to later maintenance. The threaded connection can realize fixation while meeting the disassembly requirement in the authorized state. The operating part 8 outside the anti-removal head 43 can be a non-standard-shaped groove or protrusion, which is matched with only the special tool. Unauthorized personnel cannot turn the anti-removal head 43 by clamping the operating part 8 with ordinary tools, thereby preventing them from illegally disassembling the secondary lock rod 42, further enhancing the protection effect of the anti-theft mechanism 4, and ensuring that the secondary lock rod 42 is always in a stable locking state.

[0043] The mutual inductor body 1 is provided with a fitting groove 9 accommodating the anti-disassembly head 43, and the groove wall of the fitting groove 9 is in close contact with the circumferential side of the anti-disassembly head 43. The purpose of the above design is to form physical constraint and hidden protection for the anti-disassembly head 43, and further improve the stability and anti-damage ability of the anti-stealing mechanism 4. The fitting groove 9 is a recessed structure on the mutual inductor body 1 adapted to the anti-disassembly head 43, and the groove wall is in close contact with the circumferential side of the anti-disassembly head 43, which can limit the radial shaking or displacement of the anti-disassembly head 43, avoid the position deviation of the anti-disassembly head 43 due to external force collision and vibration, ensure the stable thread connection between the anti-disassembly head 43 and the auxiliary locking rod 42, and prevent the transverse displacement of the auxiliary locking rod 42 due to the loosening of the anti-disassembly head 43. At the same time, after the anti-disassembly head 43 is embedded in the fitting groove 9, the area of the anti-disassembly head 43 exposed to the outside can be reduced, the anti-disassembly head 43 can be prevented from being pried or knocked by unauthorized personnel with tools to damage the locking structure, the possibility of violent damage to the anti-disassembly head 43 can be reduced from the structure, and the locking effect of the entire anti-stealing mechanism 4 can be continuously and reliably ensured.

[0044] After the anti-disassembly head 43 is completely connected with the auxiliary locking rod 42, the outer surface is flush with the groove top of the fitting groove 9. The purpose of the above design is to further strengthen the concealment and anti-damage ability of the anti-disassembly head 43, and avoid becoming a weak point of illegal operation. When the anti-disassembly head 43 is completely connected with the auxiliary locking rod 42, the outer surface of the anti-disassembly head 43 is flush with the groove top of the fitting groove 9, which can eliminate the height difference between the anti-disassembly head 43 and the surface of the mutual inductor body 1, make the anti-disassembly head 43 completely integrated into the appearance structure of the mutual inductor body 1, not only reduce the identification probability of the position of the anti-disassembly head 43 by unauthorized personnel, but also avoid the pry, pulling and other damage operations by illegal personnel through tools clamped into the gap between the anti-disassembly head 43 and the groove top. This flush design can make the anti-disassembly head 43 lose the force point of external force, further reduce the risk of violent disassembly or damage, ensure that the locking state of the anti-stealing mechanism 4 is not disturbed by external physical interference, and continuously ensure the protection effect of the terminal.

[0045] According to the design in the embodiment, when assembled, the protective cover 2 is first slid along the clamping groove 31 on the transformer body 1 to a predetermined position through the guide rail 30 provided on the protective cover 2, so that the wiring terminals on the transformer body 1 are completely covered; then the main lock rod 41 is vertically inserted through the mounting seat 40 fixed on both sides of the protective cover 2, the position of the main lock rod 41 is adjusted so that the top movable mark 7 is aligned with the static mark 6 on the surface of the mounting seat 40, it is ensured that the through hole 5 provided on the part of the main lock rod 41 located in the transformer body 1 is aligned with the installation path of the auxiliary lock rod 42, and the lower end of the main lock rod 41 is inserted into the transformer body 1; then the auxiliary lock rod 42 is transversely inserted through the transformer body 1 and penetrates the through hole 5 of the main lock rod 41 to form a cross-shaped interlocking; finally, the anti-disassembly head 43 is fixed with the end of the auxiliary lock rod 42 through threaded connection, so that the anti-disassembly head 43 is embedded in the embedded groove 9 of the transformer body 1 and the outer surface of the anti-disassembly head 43 is flush with the top of the embedded groove 9; at this time, the protective cover 2 is firmly locked by the anti-theft mechanism 4, and can only be removed by disassembling the anti-disassembly head 43, taking out the auxiliary lock rod 42, and pulling out the main lock rod 41, and then sliding the protective cover 2 along the clamping groove 31, so as to realize physical protection and anti-theft locking of the wiring terminals.

[0046] The above embodiment is only a preferred embodiment of the present application, and does not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A tamper-proof voltage transformer comprising a transformer body (1) and connection terminals, characterized in that Also include: The protective cover (2) is detachably connected with the transformer body (1) through the mounting structure (3), and the wiring terminal cover is arranged in the protective cover (2); The anti-theft mechanism (4) includes a mounting seat (40) arranged on both sides of the protective cover (2), a main lock rod (41) vertically penetrating the mounting seat (40) and inserted into the transformer body (1), a secondary lock rod (42) transversely penetrating the transformer body (1) and penetrating the main lock rod (41), and an anti-disassembly head (43) for fixing both ends of the secondary lock rod (42), the anti-disassembly head (43) can only be disassembled by special tools.

2. The tamperproof voltage transformer according to claim 1, characterized in that The main lock rod (41) is located in the transformer body (1) and is provided with a through hole (5), and the secondary lock rod (42) penetrates the through hole (5).

3. The tamperproof voltage transformer as claimed in claim 1, wherein, The mounting seat (40) is provided with a static mark (6), and the main lock rod (41) is aligned with the static mark (6) through a dynamic mark (7) arranged on the top, so that the through hole (5) is aligned with the secondary lock rod (42).

4. The tamperproof voltage transformer of claim 1, wherein, The mounting structure (3) includes: The guide rail (30) is arranged on the protective cover (2); The clamping groove (31) is arranged on the transformer body (1) and matched with the guide rail (30); Wherein, the protective cover (2) is slid along the clamping groove (31) to the predetermined position through the guide rail (30).

5. The tamperproof voltage transformer as claimed in claim 1, wherein, The anti-disassembly head (43) is threadedly connected with the end of the secondary lock rod (42), and the outer side is provided with an operation part (8) matched with the special tool.

6. A tamperproof voltage transformer according to claim 5, characterised in that, The transformer body (1) is provided with a fitting groove (9) accommodating the anti-disassembly head (43), and the groove wall of the fitting groove (9) is matched with the peripheral side of the anti-disassembly head (43).

7. A tamperproof voltage transformer according to claim 6, characterised in that, After the anti-disassembly head (43) is completely connected with the secondary lock rod (42), the outer surface is flush with the groove top of the fitting groove (9).

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