Breaker mechanical characteristic tester with function of preventing induced voltage
By introducing a mechanical locking structure into the circuit breaker mechanical characteristics tester, the problem of instrument damage caused by human factors due to the wiring sequence being dependent on it is solved, the mechanical locking of the wiring sequence is achieved, and the instrument safety and test efficiency are ensured.
Patent Information
- Application Number
- CN202422749480.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-11
AI Technical Summary
Existing circuit breaker mechanical performance testers have a discharge circuit connected between the break signal input terminal and the ground, but lack a means to limit the wiring sequence. As a result, the wiring sequence depends on the technical level of the tester, and wiring errors are prone to cause damage to the instrument.
A circuit breaker mechanical characteristic tester with anti-induced voltage function is designed. By arranging the terminal cover of the break signal line, a mechanical locking shell, a positioning rod, a spring, a tooth plate and a gear structure on the tester shell, the mechanical locking of the wiring sequence is realized, ensuring that the discharge circuit is connected first and preventing the induced voltage from damaging the instrument.
The mechanical locking structure limits the wiring sequence, ensuring the safety of the circuit breaker mechanical characteristics tester and avoiding damage to the instrument due to wiring errors. It can be installed on existing instruments without replacing the entire instrument, saving test costs.
Smart Images
Figure CN223389867U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of circuit breaker testers, in particular to a circuit breaker mechanical characteristic tester with an anti-induction voltage function. Background Art
[0002] During field testing of circuit breaker mechanical characteristics, high voltage switches (especially those above 220 kV) often induce high voltages between the break and ground. While the voltage is relatively low, it can be high enough to threaten the safety of the instrument's power electronic components. Typically, circuit breaker mechanical characteristics testers have a discharge circuit connected between the break signal input and ground. Therefore, a ground wire must be connected first, prioritizing the discharge circuit. When the break signal line is connected, even if a high voltage is induced at the break, it can be discharged to ground through the discharge circuit, thus ensuring the safety of the instrument's break channel.
[0003] Existing circuit breaker mechanical performance testers, while equipped with a discharge circuit between the break signal input and ground, lack a means of restricting the wiring sequence. In practice, the wiring sequence depends on the tester's skill level and experience, and incorrect wiring can easily damage the instrument. Therefore, those skilled in the art have provided a circuit breaker mechanical performance tester with an anti-inductive voltage function to address the issues raised in the background art. Utility Model Content
[0004] (1) Technical problems solved
[0005] In response to the shortcomings of the existing technology, the utility model provides a circuit breaker mechanical characteristics tester with an anti-induced voltage function to solve the problem that although a discharge circuit is connected between the breaker signal input terminal and the ground, there is no means to limit the wiring sequence. In actual operation, the wiring sequence depends on the technical level and experience of the tester, and the instrument is easily damaged due to incorrect wiring sequence.
[0006] (2) Technical solution
[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a circuit breaker mechanical characteristic tester with an anti-induced voltage function, comprising a tester housing, a break signal line terminal cover hinged on the tester housing, a lower locking tongue installed on one side of the break signal line terminal cover, a mechanical locking housing provided in the tester housing, a positioning rod installed on the bottom inner wall of the mechanical locking housing, a spring sleeved around the positioning rod, a vertical tooth plate provided on the upper side of the spring, a tester body grounding terminal installed on the top of the vertical tooth plate, and a bracket provided on one side of the vertical tooth plate. The gear train is connected to the gear of the driven gear of the said frame, and the gear train is connected to the gear of the driven gear of the said frame by the upper end of the gear train and the lower end of the gear train.
[0008] Preferably, the grounding terminal of the tester body passes through the mechanical locking shell and the mechanical locking shell in sequence.
[0009] Preferably, the upper lock tongue passes through the mechanical locking shell, the upper lock tongue is on the upper side of the lower lock tongue, the bottom side wall of the upper lock tongue is in contact with the upper side wall of the lower lock tongue, and the upper lock tongue is used to press the lower lock tongue to achieve the closure of the broken signal line terminal cover.
[0010] Preferably, a positioning hole is provided at the bottom of the vertical tooth plate, and the vertical tooth plate is slidably connected to the positioning rod through the positioning hole. The bottom end of the spring is pressed against the bottom side wall of the mechanical locking shell, and the top end of the spring is pressed against the bottom side of the vertical tooth plate. The grounding wire is inserted from the grounding terminal of the tester body, pushing the vertical tooth plate downward, and the spring is compressed.
[0011] Preferably, the first driven gear is in contact with the vertical gear plate, and the horizontal gear plate is slidably engaged with the upper inner wall of the mechanical locking shell through a limit bar, and the horizontal gear plate is in contact with the second driven gear, the upper side of the first bevel gear is in contact with the upper bevel gear, and the lower side of the first bevel gear is in contact with the lower bevel gear, the upper side of the second bevel gear is also in contact with the upper bevel gear, and the lower side of the second bevel gear is in contact with the lower bevel gear. After the grounding wire is inserted into the grounding terminal of the tester body, the vertical gear plate moves downward, and the first driven gear rotates to drive the first bevel gear, and the first bevel gear drives the upper bevel gear and the lower bevel gear to rotate, thereby causing the second bevel gear on the other side to rotate, and the rotation of the second bevel gear drives the second driven gear to rotate, and finally the horizontal gear plate drives the lower lock tongue to disengage from the plug-in pressing of the lower lock tongue.
[0012] Preferably, fixing holes are provided at both ends of the top side of the mechanical locking housing, with a total of four groups of fixing holes, which facilitate the use of bolts to fix the mechanical locking housing in the tester housing. This installation method can be retrofitted on the basis of the existing circuit breaker mechanical characteristics tester without the need to replace the entire instrument, saving test costs and improving efficiency.
[0013] Preferably, a splint is slidably inserted into the bottom of the tester shell, and a bidirectional screw is rotatably connected to the bottom of the tester shell. The bidirectional screw is threadedly sleeved with the upper middle part of the splint. By retracting the splint, the tester shell and part of the placement workbench can be clamped and fixed to avoid movement during testing.
[0014] (3) Beneficial effects
[0015] Compared with the prior art, the present invention provides a circuit breaker mechanical characteristics tester with an anti-induction voltage function, which has the following beneficial effects:
[0016] Through design, a fracture signal line terminal cover is hinged on the tester shell, a lower lock tongue is installed on one side of the fracture signal line terminal cover, a mechanical locking shell is arranged in the tester shell, a positioning rod is installed on the bottom inner wall of the mechanical locking shell, a spring is sleeved around the positioning rod, a vertical tooth plate is arranged on the upper side of the spring, a tester body grounding terminal is installed on the top of the vertical tooth plate, a bracket is arranged on one side of the vertical tooth plate, a fixed shaft is vertically installed in the bracket, the upper part of the fixed shaft is rotatably sleeved with an upper bevel gear, and the lower part of the fixed shaft is rotatably sleeved with a lower bevel gear, a first bevel gear is rotatably sleeved on the inner wall of one side of the bracket, one end of the first bevel gear facing the vertical tooth plate is connected to a first driven gear, a second bevel gear is arranged on the side opposite to the first bevel gear, and the other end of the second bevel gear is connected to a second driven gear, and the upper side of the second driven gear is provided with The horizontal tooth plate has an upper lock tongue installed at one end of the horizontal tooth plate facing the lower lock tongue. The upper lock tongue passes through the mechanical locking shell. After the grounding wire is inserted into the grounding terminal of the tester body, the vertical tooth plate moves downward, and the first driven gear rotates to drive the first bevel gear. The first bevel gear drives the upper bevel gear and the lower bevel gear to rotate, thereby causing the second bevel gear on the other side to rotate. The rotation of the second bevel gear drives the second driven gear to rotate, and finally the horizontal tooth plate drives the upper lock tongue to disengage from the plug-in pressure on the lower lock tongue. At this time, the terminal cover of the fracture signal line can be flipped open. After the test is completed, the terminal cover of the fracture signal line is flipped closed. Before pulling out the grounding wire, ensure that the upper lock tongue is extended and the lower lock tongue is pressed tightly to achieve locking. The device limits the wiring sequence by means of mechanical locking to ensure that the discharge circuit is connected first to prevent the induced voltage from damaging the circuit breaker mechanical characteristics tester. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of a circuit breaker mechanical characteristics tester with an anti-induced voltage function provided in an embodiment of the present application.
[0018] Figure 2 This is a structural schematic diagram of a break signal line terminal cover in a circuit breaker mechanical characteristics tester with an anti-induced voltage function provided by an embodiment of the present application.
[0019] Figure 3 This is a structural schematic diagram of a mechanical locking housing in a circuit breaker mechanical characteristics tester with an anti-induced voltage function provided in an embodiment of the present application.
[0020] Figure 4 This is a structural cross-sectional view of a mechanical locking housing in a circuit breaker mechanical characteristics tester with an anti-induced voltage function provided in an embodiment of the present application.
[0021] Figure 5 This is a structural cross-sectional view of a vertical tooth plate in a circuit breaker mechanical characteristics tester with an anti-induced voltage function provided in an embodiment of the present application.
[0022] Figure 6 This is a structural schematic diagram of a bidirectional screw and a clamping plate in a circuit breaker mechanical characteristics tester with an anti-induced voltage function provided in an embodiment of the present application.
[0023] In the figure: 1. Tester housing; 2. Break signal line terminal cover; 3. Lower lock tongue; 4. Upper lock tongue; 5. Tester body grounding terminal; 6. Mechanical locking housing; 7. Fixing hole; 8. Vertical tooth plate; 801. Positioning hole; 9. Positioning rod; 10. Spring; 11. Bracket; 12. Fixed shaft; 13. Upper bevel gear; 14. Lower bevel gear; 15. First bevel gear; 16. First driven gear; 17. Second bevel gear; 18. Second driven gear; 19. Limiting bar; 20. Horizontal tooth plate; 21. Bidirectional screw; 22. Clamp. DETAILED DESCRIPTION
[0024] The following will be combined with the 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.
[0025] The utility model provides a technical solution, a circuit breaker mechanical characteristics tester with anti-induction voltage function, please refer to Figures 1 to 5, including a tester housing 1, on which a fracture signal line terminal cover 2 is hingedly connected, and a lower lock tongue 3 is installed on one side of the fracture signal line terminal cover 2, and a mechanical locking housing 6 is provided in the tester housing 1, and a positioning rod 9 is installed on the inner wall of the bottom side of the mechanical locking housing 6, and a spring 10 is sleeved around the positioning rod 9, and a vertical tooth plate 8 is provided on the upper side of the spring 10, and the top of the vertical tooth plate 8 is installed with a tester body grounding terminal 5, and a bracket 11 is provided on one side of the vertical tooth plate 8, and a fixed shaft 12 is vertically installed in the bracket 11, and the upper part of the fixed shaft 12 is rotatably sleeved with an upper bevel gear 13, and the fixed shaft 12 The lower part is rotatably sleeved with a lower bevel gear 14, and the inner wall of one side of the bracket 11 is rotatably clamped with a first bevel gear 15. The end of the first bevel gear 15 facing the vertical tooth plate 8 is connected to the first driven gear 16. A second bevel gear 17 is provided on the opposite side of the first bevel gear 15, and the other end of the second bevel gear 17 is connected to the second driven gear 18. A horizontal tooth plate 20 is provided on the upper side of the second driven gear 18, and an upper lock tongue 4 is installed on the end of the horizontal tooth plate 20 facing the lower lock tongue 3. A limit strip 19 is installed on the upper inner wall of the mechanical locking shell 6, and the grounding terminal 5 of the tester body passes through the mechanical locking shell 6 and the mechanical locking shell 6 in sequence.
[0026] See also Figures 2 to 5The upper lock tongue 4 passes through the mechanical locking shell 6, and the upper lock tongue 4 is on the upper side of the lower lock tongue 3. The bottom side wall of the upper lock tongue 4 is in contact with the upper side wall of the lower lock tongue 3, and the upper lock tongue 4 presses the lower lock tongue 3 to achieve the closure of the broken signal line terminal cover 2. A positioning hole 801 is provided at the bottom of the vertical tooth plate 8, and the vertical tooth plate 8 is slidably plugged into the positioning rod 9 through the positioning hole 801. The bottom end of the spring 10 is pressed and contacted with the bottom side wall of the mechanical locking shell 6, and the top end of the spring 10 is pressed and contacted with the bottom side of the vertical tooth plate 8. The grounding wire is inserted into the grounding terminal 5 of the tester body, pushing the vertical tooth plate 8 to move downward, the spring 10 is compressed, and the first driven gear 16 is in contact and meshed with the vertical tooth plate 8. The horizontal tooth plate 20 is in contact with the upper inner wall of the mechanical locking shell 6 through the limit bar 19. The sliding engagement causes the horizontal tooth plate 20 to mesh with the second driven gear 18, the upper side of the first bevel gear 15 to mesh with the upper bevel gear 13, and the lower side of the first bevel gear 15 to mesh with the lower bevel gear 14. The upper side of the second bevel gear 17 is also meshed with the upper bevel gear 13, and the lower side of the second bevel gear 17 is meshed with the lower bevel gear 14. After the grounding wire is inserted into the grounding terminal 5 of the tester body, the vertical tooth plate 8 moves downward, and the first driven gear 16 rotates to drive the first bevel gear 15, and the first bevel gear 15 drives the upper bevel gear 13 and the lower bevel gear 14 to rotate, thereby causing the second bevel gear 17 on the other side to rotate. The rotation of the second bevel gear 17 drives the second driven gear 18 to rotate, and finally the horizontal tooth plate 20 drives the upper lock tongue 4 to disengage from the plug-in pressing of the lower lock tongue 3.
[0027] See also Figure 3 、 Figure 6 , fixing holes 7 are opened at both ends of the top side of the mechanical locking shell 6, and there are four groups of fixing holes 7, which are convenient for using bolts to fix the mechanical locking shell 6 in the tester shell 1. This installation method can be installed on the basis of the existing circuit breaker mechanical characteristics tester, and there is no need to replace the entire instrument, saving test costs and improving efficiency. The bottom of the tester shell 1 is slidably plugged with a splint 22, and the bottom of the tester shell 1 is rotatably connected with a bidirectional screw 21. The bidirectional screw 21 is threadedly sleeved with the middle part of the upper side of the splint 22. The tester shell 1 can be clamped and fixed to part of the placement workbench by retracting the splint 22 to avoid movement during detection.
[0028] A broken signal line terminal cover 2 is hinged on the tester housing 1, a lower lock tongue 3 is installed on one side of the broken signal line terminal cover 2, and a mechanical locking housing 6 is provided in the tester housing 1, a positioning rod 9 is installed on the inner wall of the bottom side of the mechanical locking housing 6, a spring 10 is sleeved around the positioning rod 9, a vertical tooth plate 8 is provided on the upper side of the spring 10, a tester body grounding terminal 5 is installed on the top of the vertical tooth plate 8, a bracket 11 is provided on one side of the vertical tooth plate 8, a fixed shaft 12 is vertically installed in the bracket 11, the upper part of the fixed shaft 12 is rotatably sleeved with an upper bevel gear 13, the lower part of the fixed shaft 12 is rotatably sleeved with a lower bevel gear 14, and the inner wall of one side of the bracket 11 is rotatably clamped with the first bevel gear 1 5. One end of the first bevel gear 15 facing the vertical tooth plate 8 is connected to the first driven gear 16. A second bevel gear 17 is provided on the opposite side of the first bevel gear 15. The other end of the second bevel gear 17 is connected to the second driven gear 18. A horizontal tooth plate 20 is provided on the upper side of the second driven gear 18. An upper lock tongue 4 is installed on the end of the horizontal tooth plate 20 facing the lower lock tongue 3. A limit strip 19 is installed on the upper inner wall of the mechanical locking housing 6. The upper lock tongue 4 passes through the mechanical locking housing 6. The upper lock tongue 4 is located on the upper side of the lower lock tongue 3. The bottom side wall of the upper lock tongue 4 is in contact with the upper side wall of the lower lock tongue 3. The upper lock tongue 4 presses the lower lock tongue 3 to achieve the closure of the broken signal line terminal cover 2.
[0029] During operation, after the grounding wire is inserted into the grounding terminal 5 of the tester body, the vertical tooth plate 8 moves downward, the first driven gear 16 rotates to drive the first bevel gear 15, and the first bevel gear 15 drives the upper bevel gear 13 and the lower bevel gear 14 to rotate, thereby causing the second bevel gear 17 on the other side to rotate, and the rotation of the second bevel gear 17 drives the second driven gear 18 to rotate, and finally the horizontal tooth plate 20 drives the upper lock tongue 4 to disengage the plug-in pressure on the lower lock tongue 3. At this time, the fracture signal line terminal cover 2 can be flipped open. After the test is completed, flip and close the fracture signal line terminal cover 2. Before pulling out the grounding wire, ensure that the upper lock tongue 4 is extended and press the lower lock tongue 3 to achieve locking;
[0030] In this device, the wiring sequence mechanical locking device adopts a gear meshing linkage structure, which does not rely on external energy (such as power supply, battery, electronic signal, etc.), making it more reliable and durable. In addition, the accessories in the mechanical locking housing 6 are all made of metal and are tightly connected to the tester housing 1, which also plays a grounding and conductive role, making the discharge circuit between the fracture signal input terminal and the ground more reliable;
[0031] In addition, fixing holes 7 are provided at both ends of the top side of the mechanical locking housing 6. There are four groups of fixing holes 7, which are convenient for fixing the mechanical locking housing 6 to the tester housing 1 using bolts. This installation method can be retrofitted on the basis of the existing circuit breaker mechanical characteristics tester without replacing the entire instrument, saving test costs and improving efficiency.
[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.
[0033] In this document, unless otherwise clearly specified and limited, terms such as "installation", "setting", "connection", "fixation", and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly specified, ordinary technicians in this field can understand the specific meanings of the above terms in this utility model according to specific circumstances.
[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A circuit breaker mechanical characteristics tester with an anti-induction voltage function, comprising a tester housing (1), characterized in that: A broken signal line terminal cover (2) is hingedly connected to the tester housing (1), a lower locking tongue (3) is installed on one side of the broken signal line terminal cover (2), and a mechanical locking housing (6) is provided in the tester housing (1); A positioning rod (9) is installed on the inner wall of the bottom side of the mechanical locking shell (6), a spring (10) is sleeved around the positioning rod (9), a vertical tooth plate (8) is provided on the upper side of the spring (10), a tester body grounding terminal (5) is installed on the top of the vertical tooth plate (8), a bracket (11) is provided on one side of the vertical tooth plate (8), a fixed shaft (12) is vertically installed in the bracket (11), the upper part of the fixed shaft (12) is rotatably sleeved with an upper bevel gear (13), the lower part of the fixed shaft (12) is rotatably sleeved with a lower bevel gear (14), and the bracket (11) A first bevel gear (15) is rotatably engaged with an inner wall on one side of the first bevel gear (15), one end of the first bevel gear (15) facing the vertical tooth plate (8) is connected to a first driven gear (16), a second bevel gear (17) is provided on the side opposite to the first bevel gear (15), the other end of the second bevel gear (17) is connected to a second driven gear (18), a transverse tooth plate (20) is provided on the upper side of the second driven gear (18), an upper lock tongue (4) is installed on one end of the transverse tooth plate (20) facing the lower lock tongue (3), and a limit strip (19) is installed on the upper inner wall of the mechanical locking housing (6).
2. The circuit breaker mechanical characteristics tester with an anti-induction voltage function according to claim 1, characterized in that: The upper lock tongue (4) passes through the mechanical locking housing (6), and the upper lock tongue (4) is located on the upper side of the lower lock tongue (3), and the bottom side wall of the upper lock tongue (4) is in contact with the upper side wall of the lower lock tongue (3).
3. The circuit breaker mechanical characteristics tester with an anti-induction voltage function according to claim 1, characterized in that: The tester body grounding terminal (5) passes through the mechanical locking housing (6) and the mechanical locking housing (6) in sequence.
4. The circuit breaker mechanical characteristics tester with an anti-induction voltage function according to claim 1, characterized in that: A positioning hole (801) is provided at the bottom of the vertical tooth plate (8), and the vertical tooth plate (8) is slidably connected to the positioning rod (9) through the positioning hole (801). The bottom end of the spring (10) is pressed against the bottom side wall of the mechanical locking housing (6), and the top end of the spring (10) is pressed against the bottom side of the vertical tooth plate (8).
5. The circuit breaker mechanical characteristics tester with an anti-induction voltage function according to claim 1, characterized in that: The transverse tooth plate (20) is slidably engaged with the upper inner wall of the mechanical locking housing (6) via a limiting strip (19), and the transverse tooth plate (20) is in meshing contact with the second driven gear (18).
6. The circuit breaker mechanical characteristics tester with an anti-induction voltage function according to claim 1, characterized in that: The upper side of the first bevel gear (15) is in meshing contact with the upper bevel gear (13), and the lower side of the first bevel gear (15) is in meshing contact with the lower bevel gear (14). The upper side of the second bevel gear (17) is also in meshing contact with the upper bevel gear (13), and the lower side of the second bevel gear (17) is in meshing contact with the lower bevel gear (14).
7. The circuit breaker mechanical characteristics tester with an anti-induction voltage function according to claim 1, characterized in that: The first driven gear (16) is in contact and meshing engagement with the vertical tooth plate (8).
8. The circuit breaker mechanical characteristics tester with an anti-induction voltage function according to claim 1, characterized in that: Fixing holes (7) are provided at both ends of the top side of the mechanical locking housing (6).
9. The circuit breaker mechanical characteristics tester with an anti-induction voltage function according to claim 1, characterized in that: The bottom of the tester housing (1) is slidably connected with a clamping plate (22), and the bottom of the tester housing (1) is rotatably connected with a bidirectional screw (21), and the bidirectional screw (21) is threadedly sleeved with the upper middle part of the clamping plate (22).