Auxiliary device for testing mechanical characteristics of sulfur hexafluoride circuit breaker

Abstract

The utility model relates to the technical field of testing devices, and discloses an auxiliary device for testing mechanical characteristics of a sulfur hexafluoride circuit breaker, which comprises a supporting bottom plate, a vertical plate, a turntable, a connecting rod, a bracket and the like. The vertical plate is arranged on the supporting bottom plate and provided with a speed reducing motor, and a worm is installed at the output end and meshed with a worm gear which is connected with a rotating disc. Screw holes are uniformly distributed in the surface of the turntable, the connecting rod is connected with the turntable through a screw, the middle of the connecting rod is an internal thread sleeve, two ends of the connecting rod are respectively screwed with a first screw and a second screw, the first screw is connected with a shaft sleeve and sleeves the screw, and the second screw is connected with a connecting plate. The bracket is arranged on the supporting bottom plate, a spring rod is inserted into the bracket and rotationally connected with the connecting plate through an end cap, and a push frame is fixed to the fixed end of the spring rod and connected with a power part of the sulfur hexafluoride circuit breaker through a shaft frame and a pin. The device realizes reciprocating driving through structures such as a speed reducing motor, a worm, a worm gear and a turntable, and the displacement stroke of a reciprocating driving piece can be adjusted.

Description

Technical Field

[0001] This utility model relates to the field of testing device technology, specifically an auxiliary device for testing the mechanical characteristics of sulfur hexafluoride circuit breakers. Background Technology

[0002] Sulfur hexafluoride (SF6) circuit breakers are widely used in high-voltage and ultra-high-voltage power systems due to their excellent insulation and arc-extinguishing capabilities. Their mechanical characteristics, such as opening and closing speeds, times, and travel, directly affect the breaking performance and service life of the circuit breaker, and are key indicators for ensuring the safe and stable operation of the power system. Therefore, accurate mechanical characteristic testing of SF6 circuit breakers is particularly important.

[0003] Currently, the design of the drive mechanism in commonly used testing equipment for the mechanical characteristics of sulfur hexafluoride (SF6) circuit breakers has certain shortcomings. Traditional drive methods often struggle to achieve stable and adjustable reciprocating motion, making it impossible to accurately simulate the actual operating conditions of the circuit breaker during testing, thus affecting the accuracy and reliability of the opening and closing test data. For example, some drive devices use a single fixed-stroke drive structure, which is insufficient to meet the diverse testing needs of different models and specifications of SF6 circuit breakers; while some devices with adjustment functions have complex adjustment operations and low adjustment accuracy, failing to achieve fine control of the drive displacement stroke. Furthermore, during operation, existing drive mechanisms are prone to problems such as movement jamming and shaking due to unreasonable guide structures or insufficient stability of connecting components, which not only reduces testing efficiency but may also damage the testing equipment itself and the circuit breaker. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides an auxiliary device for testing the mechanical characteristics of sulfur hexafluoride circuit breakers. This device solves the problems mentioned in the background art, such as the inability to accurately simulate the actual operating conditions of the circuit breaker during testing, which affects the accuracy and reliability of the opening and closing test data. Furthermore, its adjustment operation is complex and has low precision, making it impossible to achieve fine control of the drive displacement stroke. Due to unreasonable guide structure or insufficient stability of connecting components, problems such as movement jamming and shaking can easily occur, which not only reduces testing efficiency but may also damage the testing equipment itself and the circuit breaker.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an auxiliary device for testing the mechanical characteristics of sulfur hexafluoride circuit breakers, comprising:

[0008] A supporting base plate is provided, and a vertical plate is installed on the upper surface of the supporting base plate. A reduction motor is provided on the surface of the vertical plate, and a worm gear is installed at the output end of the reduction motor. A worm wheel is meshed on the surface of the worm gear.

[0009] A turntable is disposed on the surface of a vertical plate. The turntable is connected to a worm gear. The surface of the turntable has a linear array of screw holes, and screws are screwed into the interior of each screw hole.

[0010] A connecting rod is disposed on the surface of the turntable. The connecting rod is connected to the turntable by screws. The middle part of the connecting rod is an internally threaded sleeve. A first screw is screwed to one side of the inner cavity of the internally threaded sleeve. A bushing is installed at the connecting end of the first screw. The bushing is sleeved on the surface of the screw. A second screw is screwed to the other side of the inner cavity of the internally threaded sleeve. A connecting plate is installed at the connecting end of the second screw.

[0011] A bracket is installed on the upper surface of a support base plate. A spring rod is inserted into the inner cavity of the bracket. The middle part of the spring rod is a rod body. End plates are installed on both sides of the surface of the rod body. A reciprocating spring is installed between the end plates. An end cap is installed at the connecting end of the rod body. The end cap is rotatably connected to the connecting plate. A push frame is fixed at the fixed end of the spring rod. A shaft frame is installed on the surface of the push frame. A support platform is provided on the side of the shaft frame. A sulfur hexafluoride circuit breaker is installed on the upper surface of the support platform. A pin connects the shaft frame to the power part of the sulfur hexafluoride circuit breaker.

[0012] Preferably, the pusher frame has a trapezoidal structure and is provided with several diagonal braces inside, which increases the stability of the pusher frame structure.

[0013] Preferably, the internal threads at both ends of the internal threaded sleeve are arranged in opposite directions, which facilitates the engagement of the first screw and the second screw at both ends of the internal threaded sleeve.

[0014] Preferably, a fixing plate is installed on the upper surface of the support base plate at the position corresponding to the worm wheel, and the worm wheel is connected to the fixing plate through a bearing so that the worm wheel can stably drive the turntable to rotate.

[0015] Preferably, a mounting plate is installed on the surface of the vertical plate at a position corresponding to the geared motor, and the geared motor is mounted on the surface of the mounting plate, which improves the stability of the geared motor.

[0016] Preferably, a reinforcing plate is installed on the surface of the vertical plate at the position corresponding to the worm, and the worm is connected to the reinforcing plate through a bearing, so that the worm can rotate stably.

[0017] Beneficial effects

[0018] Compared with the prior art, this utility model provides an auxiliary device for testing the mechanical characteristics of sulfur hexafluoride circuit breakers, which has the following beneficial effects:

[0019] 1. This auxiliary device for testing the mechanical characteristics of sulfur hexafluoride circuit breakers uses a spring rod installed at the output end of a reciprocating drive component. The spring rod is guided by a bracket, which facilitates the reciprocating motion of the push frame when the spring rod moves. The push frame is connected to the power unit of the sulfur hexafluoride circuit breaker through a shaft and pins, thereby realizing the closing and opening test of the sulfur hexafluoride circuit breaker. The reciprocating drive component consists of a geared motor, a turntable, screw holes, screws, and a connecting rod. The turntable is fixed on the output shaft of the geared motor, and screws are screwed into several linearly opened screw holes on the surface of the turntable. This allows one end of the connecting rod to be rotatably connected to the turntable through the screws, while the other end of the connecting rod is rotatably connected to the spring rod. This enables the screw to make a circular motion when the turntable rotates, and the screw to swing the connecting rod, thus achieving the purpose of the connecting rod carrying the spring rod in reciprocating motion. At the same time, adjusting the screw rotation in different positions of the screw holes can adjust the stroke of the reciprocating drive component.

[0020] 2. This auxiliary device for testing the mechanical characteristics of sulfur hexafluoride circuit breakers uses a connecting rod consisting of an internal threaded sleeve, a first screw, a bushing, a second screw, and a connecting plate. The first and second screws are screwed onto the two ends of the internal threaded sleeve, facilitating the adjustment of the connecting rod length when the internal threaded sleeve rotates. The bushing fixed at the end of the first screw is rotatably connected to a screw, and the end of the second screw is fixed to a connecting plate. The spring rod consists of a rod body, an end plate, a reciprocating spring, and an end cap. The end plates fixed at both ends of the rod body are fixed to the two ends of the reciprocating spring, and the end cap fixed at one end plate is rotatably connected to the connecting plate, facilitating the rotatable connection between the connecting rod and the spring rod. The end plate fixed at the other end of the rod body is fixed to a push frame, facilitating the reciprocating motion of the push frame when the spring rod moves.

[0021] 3. This auxiliary device for testing the mechanical characteristics of sulfur hexafluoride circuit breakers uses a geared motor mounted on the surface of a vertical plate. A worm gear is installed at the output end of the motor, and a worm wheel meshes with the surface of the worm gear. The worm wheel is connected to a turntable. When the geared motor runs, it drives the worm gear to rotate, which in turn drives the worm wheel to rotate. Because the meshing transmission between the worm gear and the worm wheel has the characteristics of stable transmission ratio and self-locking, the rotation angle of the worm wheel can be precisely controlled. The rotation of the worm wheel, in turn, drives the turntable to rotate. The turntable is connected to a spring rod through a connecting rod and other structures. The spring rod is then connected to the power unit of the sulfur hexafluoride circuit breaker through a push frame and other structures. Therefore, the transmission between the worm gear and the worm wheel driven by the geared motor can achieve precise control of the driving displacement stroke. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a top view of the structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the connecting rod of this utility model;

[0025] Figure 4 This is a schematic diagram of the connection structure between the second screw and the rod body of this utility model;

[0026] Figure 5 This is a schematic diagram of the installation structure of the turntable of this utility model.

[0027] In the diagram: 1. Support base plate; 2. Vertical plate; 3. Gear motor; 31. Worm gear; 32. Worm wheel; 33. Fixing plate; 34. Mounting plate; 35. Reinforcing plate; 4. Turntable; 5. Screw hole; 6. Screw; 7. Connecting rod; 71. Internal threaded sleeve; 72. First screw; 73. Bushing; 74. Second screw; 75. Connecting plate; 8. Bracket; 9. Spring rod; 91. Rod body; 92. End plate; 93. Reciprocating spring; 94. End cap; 10. Push frame; 11. Shaft frame; 12. Pin; 13. Support platform; 14. Sulfur hexafluoride circuit breaker. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] This utility model provides a technical solution: an auxiliary device for testing the mechanical characteristics of sulfur hexafluoride circuit breakers. Please refer to [link / reference needed]. Figure 1 It includes a supporting base plate 1, and a vertical plate 2 is installed on the upper surface of the supporting base plate 1. Please refer to [link / reference]. Figure 2 The surface of the vertical plate 2 is equipped with a geared motor 3. Please refer to [link / reference]. Figure 5 The output end of the geared motor 3 is equipped with a worm 31, and a worm wheel 32 meshes with the surface of the worm 31.

[0030] Turntable 4 is disposed on the surface of vertical plate 2. Turntable 4 is connected to worm gear 32. The surface of turntable 4 has a linear array of screw holes 5. Please refer to [link / reference]. Figure 2 Each screw hole 5 is screwed with a screw 6 inside;

[0031] Link 7 is mounted on the surface of turntable 4. Please refer to [link / reference]. Figure 3 The connecting rod 7 is connected to the turntable 4 by the screw 6. The middle part of the connecting rod 7 is an internal threaded sleeve 71. A first screw 72 is screwed onto one side of the inner cavity of the internal threaded sleeve 71. A bushing 73 is installed at the connecting end of the first screw 72. The bushing 73 is sleeved on the surface of the screw 6. A second screw 74 is screwed onto the other side of the inner cavity of the internal threaded sleeve 71. A connecting plate 75 is installed at the connecting end of the second screw 74.

[0032] Please see Figure 2 A bracket 8 is mounted on the upper surface of the supporting base plate 1. A spring rod 9 is inserted into the inner cavity of the bracket 8. The middle part of the spring rod 9 is a rod body 91. End plates 92 are installed on both sides of the surface of the rod body 91. A reciprocating spring 93 is installed between the end plates 92. Please refer to [link / reference]. Figure 4 The connecting end of the rod 91 is equipped with an end cap 94, which is rotatably connected to the connecting plate 75. Please refer to [link / reference]. Figure 2 A pusher 10 is fixed to the fixed end of the spring rod 9. A shaft bracket 11 is mounted on the surface of the pusher 10. A support platform 13 is provided on the side of the shaft bracket 11. A sulfur hexafluoride circuit breaker 14 is mounted on the upper surface of the support platform 13. A pin 12 is connected between the shaft bracket 11 and the power part of the sulfur hexafluoride circuit breaker 14.

[0033] The spring rod 9 is installed at the output end of the reciprocating drive component. The spring rod 9 is guided by the bracket 8, so that the spring rod 9 can move the push frame 10 reciprocally. The push frame 10 is connected to the power unit of the sulfur hexafluoride circuit breaker 14 through the shaft frame 11 and the pin 12, so as to realize the closing and opening test of the sulfur hexafluoride circuit breaker 14. The reciprocating drive component consists of a geared motor 3, a turntable 4, screw holes 5, screws 6 and connecting rods 7. The turntable 4 is fixed on the output shaft of the geared motor 3. Several screw holes 5 are linearly opened on the surface of the turntable 4, and screws 6 are screwed in them. So that one end of the connecting rod 7 is rotatably connected to the turntable 4 through the screws 6, and the other end of the connecting rod 7 is rotatably connected to the spring rod 9. So that when the turntable 4 rotates, it moves the screw 6 in a circular motion, and the screw 6 moves the connecting rod 7 to swing, so as to realize the purpose of the connecting rod 7 moving the spring rod 9 reciprocally. At the same time, the stroke of the reciprocating drive component can be adjusted by adjusting the screw 6 rotating in different positions in the screw holes 5.

[0034] The connecting rod 7 is composed of an internal threaded sleeve 71, a first screw 72, a bushing 73, a second screw 74, and a connecting plate 75. The first screw 72 and the second screw 74 are screwed onto the two ends of the internal threaded sleeve 71, which facilitates the adjustment of the length of the connecting rod 7 when the internal threaded sleeve 71 rotates. The bushing 73 fixed at the end of the first screw 72 is rotatably connected to the screw 6. The end of the second screw 74 is fixed to the connecting plate 75. The spring rod 9 is composed of a rod body 91, an end plate 92, a reciprocating spring 93, and an end cap 94. The end plates 92 fixed at both ends of the rod body 91 are fixed to both ends of the reciprocating spring 93. The end cap 94 fixed at one end plate 92 is rotatably connected to the connecting plate 75, which facilitates the rotatable connection between the connecting rod 7 and the spring rod 9. The end plate 92 fixed at the other end of the rod body 91 is fixed to the push frame 10, which facilitates the reciprocating motion of the push frame 10 when the spring rod 9 moves.

[0035] By setting a geared motor 3 on the surface of the vertical plate 2, a worm gear 31 is installed at its output end. The surface of the worm gear 31 meshes with a worm wheel 32, and the worm wheel 32 is connected to the turntable 4. When the geared motor 3 runs, it drives the worm gear 31 to rotate, which in turn drives the worm wheel 32 to rotate. Since the meshing transmission between the worm gear 31 and the worm wheel 32 has the characteristics of stable transmission ratio and self-locking, the rotation angle of the worm wheel 32 can be precisely controlled. The rotation of the worm wheel 32 then drives the turntable 4 to rotate. The turntable 4 is connected to the spring rod 9 through a connecting rod 7 and other structures. The spring rod 9 is then connected to the power unit of the sulfur hexafluoride circuit breaker 14 through a push frame 10 and other structures. Therefore, the transmission between the worm gear 31 and the worm wheel 32 can be driven by the geared motor 3, so as to achieve fine control of the driving displacement stroke.

[0036] The push frame 10 has a trapezoidal structure and several diagonal braces are installed inside the push frame 10, which increases the stability of the push frame 10 structure.

[0037] Please see Figure 3 The internal threads at both ends of the internal threaded sleeve 71 are reversed, which facilitates the engagement of the first screw 72 and the second screw 74 at both ends of the internal threaded sleeve 71.

[0038] Please see Figure 5 A fixing plate 33 is installed on the upper surface of the support base plate 1 at the position corresponding to the worm wheel 32. The worm wheel 32 is connected to the fixing plate 33 through a bearing, so that the worm wheel 32 can stably drive the turntable 4 to rotate.

[0039] A mounting plate 34 is installed on the surface of the vertical plate 2 at the position corresponding to the geared motor 3. The geared motor 3 is mounted on the surface of the mounting plate 34, which improves the stability of the geared motor 3.

[0040] A reinforcing plate 35 is installed on the surface of the vertical plate 2 at the corresponding position of the worm 31. The worm 31 is connected to the reinforcing plate 35 through a bearing, so that the worm 31 can rotate stably.

[0041] When this solution is in operation: the geared motor 3 installed on the mounting plate 34 is started, and its output end drives the worm gear 31 to rotate stably at the reinforcing plate 35. The worm gear 31 meshes and drives the worm wheel 32 to rotate stably at the fixed plate 33, which in turn drives the turntable 4 connected to the worm wheel 32 to rotate. Screws 6 are screwed into the screw holes 5 at different positions on the surface of the turntable 4. One end of the connecting rod 7 is rotatably connected to the turntable 4 through the screw 6, and the other end is rotatably connected to the end cap 94 of the spring rod 9 through the connecting plate 75. Under the guidance of the bracket 8, the spring rod 9 moves back and forth with the swing of the connecting rod 7, which in turn drives the push frame 10 to move back and forth. The push frame 10 is connected to the power unit of the sulfur hexafluoride circuit breaker 14 through the shaft bracket 11 and the pin 12 to realize the closing and opening test of the sulfur hexafluoride circuit breaker 14. The displacement stroke of the reciprocating drive component can be adjusted by adjusting the position of the screw 6 or rotating the internal threaded sleeve 71 to adjust the length of the connecting rod 7.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for mechanical characteristic test of a sulfur hexafluoride circuit breaker, characterized in that, include: A support base plate (1) is provided, and a vertical plate (2) is installed on the upper surface of the support base plate (1). A reduction motor (3) is provided on the surface of the vertical plate (2). A worm gear (31) is installed at the output end of the reduction motor (3). A worm wheel (32) is meshed on the surface of the worm gear (31). A turntable (4) is set on the surface of the vertical plate (2). The turntable (4) is connected to the worm gear (32). The surface of the turntable (4) is arranged in a linear array of screw holes (5). Each screw hole (5) is screwed with a screw (6). A connecting rod (7) is disposed on the surface of a turntable (4). The connecting rod (7) is connected to the turntable (4) by a screw (6). The middle part of the connecting rod (7) is an internal thread sleeve (71). A first screw (72) is screwed onto one side of the inner cavity of the internal thread sleeve (71). A bushing (73) is installed at the connecting end of the first screw (72). The bushing (73) is sleeved on the surface of the screw (6). A second screw (74) is screwed onto the other side of the inner cavity of the internal thread sleeve (71). A connecting plate (75) is installed at the connecting end of the second screw (74). A bracket (8) is set on the upper surface of the support base plate (1). A spring rod (9) is inserted into the inner cavity of the bracket (8). The middle part of the spring rod (9) is a rod body (91). End plates (92) are installed on both sides of the surface of the rod body (91). A reciprocating spring (93) is installed between the end plates (92). An end cap (94) is installed at the connecting end of the rod body (91). The end cap (94) is rotatably connected to the connecting plate (75). A push frame (10) is fixed at the fixed end of the spring rod (9). A shaft frame (11) is installed on the surface of the push frame (10). A support platform (13) is provided on the side of the shaft frame (11). A sulfur hexafluoride circuit breaker (14) is installed on the upper surface of the support platform (13). A pin (12) is connected between the shaft frame (11) and the power part of the sulfur hexafluoride circuit breaker (14).

2. The auxiliary device for testing the mechanical characteristics of sulfur hexafluoride circuit breakers according to claim 1, characterized in that: The push frame (10) has a trapezoidal structure and several diagonal bars are provided inside the push frame (10).

3. An auxiliary device for mechanical characteristic test of SF6 circuit breaker according to claim 1, characterized in that: The internal threads at both ends of the internal threaded sleeve (71) are reversed.

4. The auxiliary device for testing the mechanical characteristics of sulfur hexafluoride circuit breakers according to claim 1, characterized in that: A fixing plate (33) is installed on the upper surface of the supporting base plate (1) at a position corresponding to the worm gear (32), and the worm gear (32) is connected to the fixing plate (33) through a bearing.

5. An auxiliary device for mechanical properties testing of SF6 circuit breakers according to claim 1, characterized in that: A mounting plate (34) is installed on the surface of the vertical plate (2) at a position corresponding to the geared motor (3), and the geared motor (3) is mounted on the surface of the mounting plate (34).

6. The auxiliary device for testing the mechanical characteristics of a sulfur hexafluoride circuit breaker according to claim 1, characterized in that: A reinforcing plate (35) is installed on the surface of the vertical plate (2) at the position corresponding to the worm (31), and the worm (31) is connected to the reinforcing plate (35) through a bearing.

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