Driving mechanism for life test of molded case circuit breaker

Abstract

The utility model discloses a driving mechanism for testing the service life of a molded case circuit breaker, which comprises a positioning guide rail and a circuit breaker main body arranged at the rear side of the positioning guide rail, and the right side of the positioning guide rail is provided with a movable rod to touch a reset sensing area at the front side of the circuit breaker main body so as to reset a switch at the front side of the circuit breaker main body. A sliding rail is arranged on the right side of the positioning guide rail, a guide block is in transmission connection with the interior of the sliding rail, a plurality of poke rods are arranged on the front side of the guide block, and rollers are arranged on the opposite sides of the two poke rods so as to push a switch on the front side of the circuit breaker body to poke up and down. A driver is arranged on the outer wall of the upper end of the sliding rail to control the guide block to move up and down, a sliding sleeve a, a sliding sleeve b and a sliding plate are installed, the hollowed-out position, allowing the guide block to move, in the sliding rail is shielded, and the situation that impurities enter the sliding rail and are attached to or clamped in a driving rod, driving the guide block to move up and down, in the sliding rail is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field related to life test drive structures, and in particular relates to a drive mechanism for life test of a molded case circuit breaker. Background Art

[0002] Molded case circuit breaker is a common electrical device used to protect circuits from faults such as overload and short circuit. In order to verify the life and performance of the molded case circuit breaker, a life test is required. In the life test, the drive mechanism is used to simulate the actual opening and closing action of the circuit breaker and record its performance. However, during the up and down operation of the drive mechanism, the drive rod will leak out of the hollow slide rail, causing impurities to easily enter the slide rail and jam the drive rod, resulting in the toggle rod being unable to move up and down normally to drive the circuit breaker to open and close. Utility Model Content

[0003] The utility model aims to provide a driving mechanism for life test of molded case circuit breakers, so as to solve the problem in the background art that the driving rod may leak out of the hollowed-out slide rail, causing impurities to easily enter the slide rail and jam the driving rod.

[0004] To achieve the above object, the utility model provides the following technical solutions: a driving mechanism for life test of a molded case circuit breaker, comprising a positioning rail and a circuit breaker body mounted on the rear side of the positioning rail;

[0005] A movable rod is arranged on the right side of the positioning guide rail to touch the reset sensing area on the front side of the circuit breaker body to reset the switch on the front side of the circuit breaker body;

[0006] A slide rail is arranged on the right side of the positioning guide rail;

[0007] The guide block is connected to the inside of the slide rail in a transmission manner, and a plurality of toggle rods are arranged on the front side of the guide block. Rollers are arranged on the opposite sides of two toggle rods to push the switch on the front side of the circuit breaker body to toggle up and down. A driver is arranged on the outer wall of the upper end of the slide rail to control the guide block to move up and down.

[0008] Slide sleeves a are arranged on the left side of the slide rail and close to the upper and lower sides respectively. Slide sleeves b are slidably connected inside the two slide sleeves a. Slide plates are slidably connected inside the two slide sleeves b to cover the hollow part of the slide rail.

[0009] Preferably, one end of the two slides that fit the guide block is fixedly connected with a magnetic plate to connect the slide and the guide block, and the inner walls of the left and right ends of the two slide sleeves a and the slide sleeve b are provided with sliding grooves.

[0010] Preferably, the left and right outer walls of the sliding sleeve b and the sliding plate are fixedly connected with sliding rods passing through the inside of the sliding groove, and the front end outer walls of the two sliding sleeves a are respectively provided with fixing screws passing backwards through the inside of the sliding rail near the left and right sides to limit the position of the sliding sleeve a.

[0011] Preferably, the front end outer wall of the guide block is fixedly connected to a porous plate, the rear end outer walls of the two toggle rods are fixedly connected to fixed feet to fix the toggle rods on the porous plate, the opposite sides of the two toggle rods are fixedly connected to positioning shafts to limit the position of the roller, and the front end outer wall of the positioning guide rail is fixedly connected to a baffle to limit the position of the slide rail.

[0012] Preferably, a positioning clamp is fixedly connected to the front end outer wall of the positioning guide rail to limit the position of the movable rod, and a fixing bolt is provided on the front end outer wall of the positioning clamp to fix the positioning clamp on the positioning guide rail.

[0013] Preferably, a fixing plate is fixedly connected to the rear end outer wall of the circuit breaker body, a fixing frame is fixedly connected to the rear end outer wall of the fixing plate, and a base is fixedly connected to the front end outer wall of the fixing frame.

[0014] Preferably, the upper outer wall of the base is fixedly connected to a workbench, and the upper outer wall of the workbench is provided with a plurality of mounting holes.

[0015] Preferably, the upper outer wall of the workbench is provided with a longitudinal moving component that penetrates downward into the mounting hole, the upper outer wall of the longitudinal moving component is transmission-connected with a transverse moving component to limit the position of the positioning guide rail, and the front end outer wall of the longitudinal moving component and the left end outer wall of the transverse moving component are both provided with adjustment hand wheels.

[0016] Preferably, a controller is fixedly connected to the inner and outer walls of the right end of the fixing frame, and a display screen is embedded in the front outer wall of the controller.

[0017] Preferably, a plurality of control buttons are equidistantly arranged on the front outer wall of the controller near the right side, and the plurality of control buttons respectively have the functions of power switch, manual, start, stop and reset.

[0018] Compared with the prior art, the utility model provides a driving mechanism for life test of molded case circuit breaker, which has the following beneficial effects:

[0019] By installing the sliding sleeve a, sliding sleeve b, and the sliding plate, when the guiding block moves up and down under the restriction of the sliding rail, it will simultaneously drive the sliding plate, sliding sleeve b, and sliding sleeve a to slide relative to each other. The hollow area inside the sliding rail for the guiding block to move will be blocked following the movement distance of the guiding block, preventing impurities from entering the inside of the sliding rail and adhering to or getting stuck inside the driving rod that drives the guiding block to move up and down, keeping the inside of the sliding rail clean, avoiding interference and damage to the movement of the guiding block caused by impurities, making the up and down movement of the guiding block smoother and more stable, extending the service life of the sliding rail and the driving guiding block, ensuring the stable movement of the guiding block, and avoiding unnecessary vibrations or interruptions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. is a schematic structural diagram of a driving mechanism for the life test of a plastic case circuit breaker according to the present invention.

[0021] Figure 2 FIG. is a partial structural diagram of the toggle rod area of the present invention.

[0022] Figure 3 FIG. is a partial structural diagram of the front view section of the toggle rod area of the present invention.

[0023] Figure 4 FIG. is a partial structural diagram of the sliding sleeve a area of the present invention.

[0024] Figure 5 FIG. is a partial front view structural diagram of the sliding sleeve a area of the present invention.

[0025] Figure 6 FIG. is a partial front view sectional structural diagram of the sliding sleeve a area of the present invention.

[0026] In the figure: 1, base; 2, longitudinal movement assembly; 3, mounting hole; 4, workbench; 5, transverse movement assembly; 6, positioning guide rail; 7, positioning clamp; 8, fixing frame; 9, fixing plate; 10, circuit breaker main body; 11, controller; 12, control button; 13, display screen; 14, movable rod; 15, fixing bolt; 16, adjusting handwheel; 17, baffle; 18, guiding block; 19, sliding rail; 20, driver; 21, perforated plate; 22, toggle rod; 23, roller; 24, positioning shaft; 25, fixing foot; 26, sliding sleeve a; 27, sliding sleeve b; 28, sliding plate; 29, fixing screw; 30, magnetic plate; 31, sliding rod; 32, sliding groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] The utility model provides Figures 1-5 A driving mechanism for life test of a molded case circuit breaker shown includes a positioning rail 6 and a circuit breaker body 10 installed at the rear side of the positioning rail 6;

[0029] A movable rod 14 is provided on the right side of the positioning rail 6 to touch the reset sensing area on the front side of the circuit breaker body 10 to reset the switch on the front side of the circuit breaker body 10;

[0030] A slide rail 19 is provided on the right side of the positioning guide rail 6;

[0031] The guide block 18 is connected to the slide rail 19 through internal transmission. A plurality of toggle rods 22 are arranged on the front side of the guide block 18. A roller 23 is arranged on the opposite side of the two toggle rods 22 to push the switch on the front side of the circuit breaker body 10 to toggle up and down. A driver 20 is arranged on the outer wall of the upper end of the slide rail 19 to control the guide block 18 to move up and down. When testing the switch life of the circuit breaker body 10, the circuit breaker body 10 is first fixed, then the power is connected, and possible faults are eliminated. The power switch is turned on, and the work is performed according to the preset program. The two toggle rods 22 first move to the upper and lower sides of the switch on the front side of the circuit breaker body 10, and then the two toggle rods 22 drive the guide block 18 to move up and down under the restriction of the slide rail 19 through the driver 20. First, During the downward operation, the two toggle rods 22 move downward synchronously, and the roller 23 on the lower side of the upper toggle rod 22 will toggle the switch on the front side of the circuit breaker body 10 downward after being tilted up and turned on, and then the two toggle rods 22 move upward synchronously to reopen the switch of the circuit breaker body 10 after being turned off, that is, a test is completed, and then the two toggle rods 22 are reset, and the two toggle rods 22 are kept at the upper and lower sides of the switch, waiting for the downward test operation, and then the movable rod 14 will start to work, telescopically contact the reset panel on the circuit breaker body 10, so that the switch on the front side of the circuit breaker body 10 is reset, and the movable rod 14 retracts at the same time, and then the toggle rod 22 can work again to test the switch on the front side of the circuit breaker body 10, and repeat it many times;

[0032] On the left side of the slide rail 19 and near the upper and lower sides respectively, sliding sleeves a26 are provided. Inside both of the two sliding sleeves a26, sliding sleeves b27 are slidably connected. Inside both of the two sliding sleeves b27, a sliding plate 28 is slidably connected to block the hollow part of the slide rail 19. When the guiding block 18 moves up and down, it will synchronously drive the sliding plate 28 to slide inside the sliding sleeve b27, and the sliding sleeve b27 slides inside the sliding sleeve a26, so as to block the hollow part of the slide rail 19 according to different moving positions of the guiding block 18.

[0033] As Figure 5 and Figure 6 As shown, at one end where the two sliding plates 28 are in contact with the guiding block 18, magnetic plates 30 are fixedly connected to connect between the sliding plates 28 and the guiding block 18. Inside walls at the left and right ends of both the two sliding sleeves a26 and the sliding sleeves b27 are provided with chutes 32. On the outer walls at the left and right ends of the sliding sleeves b27 and the sliding plates 28, sliding rods 31 are fixedly connected and penetrate inside the chutes 32. On the front outer walls of both the two sliding sleeves a26 and near the left and right sides respectively, fixing screws 29 that penetrate backward inside the slide rail 19 are provided to limit the positions of the sliding sleeves a26.

[0034] When the guiding block 18 moves up and down, the two sliding plates 28 are magnetically adsorbed and fixed with the guiding block 18 through the magnetic plates 30, so that when the guiding block 18 moves up and down, it can stably drive the sliding plate 28 to move. When the sliding plate 28 moves inside the sliding sleeve b27 and the sliding sleeve b27 moves up and down inside the sliding sleeve a26, the sliding rods 31 slide up and down inside the chutes 32 to avoid the separation and falling off of the sliding sleeve a26, the sliding sleeve b27 and the sliding plate 28. The two sliding sleeves a26 can be fixed on the slide rail 19 through the fixing screws 29. When not in use, the fixing screws 29 can be unscrewed, and then the sliding sleeve a26, the sliding sleeve b27 and the sliding plate 28 can be removed.

[0035] As Figure 2 and Figure 3 As shown, on the front outer wall of the guiding block 18, a perforated plate 21 is fixedly connected. On the rear outer walls of both the two toggle levers 22, fixing feet 25 are fixedly connected to fix the toggle levers 22 on the perforated plate 21. On one side of the opposite sides of the two toggle levers 22, positioning shafts 24 are fixedly connected to limit the positions of the rollers 23. On the front outer wall of the positioning guide rail 6, a baffle 17 is fixedly connected to limit the position of the slide rail 19.

[0036] The perforated plate 21 fixedly connected to the front end of the guiding block 18 can limit the installation positions of the two toggle levers 22. When adjusting the positions of the two toggle levers 22, the fixing feet 25 can be first removed from the perforated plate 21, and according to the multiple holes provided on the perforated plate 21, the installation positions of the fixing feet 25 can be selected to limit the positions of the toggle levers 22. The positions of the rollers 23 can be limited through the positioning shafts 24, and at the same time, with the positioning shafts 24 as the rotation centers.

[0037] As Figure 1 shown, a positioning clip 7 is fixedly connected to the front outer wall of the positioning guide rail 6 to limit the position of the movable rod 14. A fixing bolt 15 is provided on the front outer wall of the positioning clip 7 to fix the positioning clip 7 on the positioning guide rail 6. A fixing plate 9 is fixedly connected to the rear outer wall of the circuit breaker body 10. A fixing frame 8 is fixedly connected to the rear outer wall of the fixing plate 9. A base 1 is fixedly connected to the front outer wall of the fixing frame 8.

[0038] When the movable rod 14 works, the positioning clip 7 can be restricted on the positioning guide rail 6 through the fixing bolt 15 to limit the position of the movable rod 14, and the installation position of the circuit breaker body 10 can be restricted through the fixing plate 9.

[0039] As Figure 1 shown, a workbench 4 is fixedly connected to the upper outer wall of the base 1. A plurality of mounting holes 3 are formed in the upper outer wall of the workbench 4. A longitudinal movement assembly 2 is provided on the upper outer wall of the workbench 4 and penetrates downward into the interior of the mounting hole 3. A transverse movement assembly 5 is drivingly connected to the upper outer wall of the longitudinal movement assembly 2 to limit the position of the positioning guide rail 6. Adjusting handwheels 16 are provided on the front outer wall of the longitudinal movement assembly 2 and the left outer wall of the transverse movement assembly 5.

[0040] The longitudinal movement assembly 2 is fixedly connected inside the mounting hole 3 on the upper side of the workbench 4. When the positions of the two toggle rods 22 need to be adjusted, the longitudinal movement assembly 2 can be rotated counterclockwise by the adjusting handwheel 16 to drive the two toggle rods 22 to move forward, and rotated in the reverse direction by the adjusting handwheel 16 to move backward. Subsequently, the transverse movement assembly 5 can be driven by rotating the other adjusting handwheel 16 counterclockwise to drive the two toggle rods 22 to move leftward, and rotated in the reverse direction by the adjusting handwheel 16 to move rightward.

[0041] As Figure 1 shown, a controller 11 is fixedly connected to the inner and outer walls at the right end of the fixing frame 8. A display screen 13 is embedded in the front outer wall of the controller 11. A plurality of control buttons 12 are equidistantly arranged near the right side of the front outer wall of the controller 11. The plurality of control buttons 12 respectively have the functions of power switch, manual, start, stop, and reset.

[0042] The display screen 13 on the front side of the controller 11 can display an operation interface, with operation buttons such as manual, start, stop, reset, etc. At the same time, there are also data statistics display, alarm display, and buttons for each sub-interface. The automatic working program can be set according to different touch operations. At the same time, different functions can be completed by pressing the control buttons 12.

[0043] The implementation principle of this embodiment is as follows: When testing the switching life of the circuit breaker main body 10, first fix the circuit breaker main body 10, then connect the power supply, and eliminate possible faults. Turn on the power switch and work through a preset program. First, the two toggle levers 22 move to the upper and lower sides of the front switch of the circuit breaker main body 10. Then, the two toggle levers 22 drive the guide block 18 to move up and down under the restriction of the slide rail 19 through the driver 20. First, perform the downward movement operation. The two toggle levers 22 move downward synchronously. The roller 23 on the lower side of the upper toggle lever 22 will push the front switch of the circuit breaker main body 10 after being turned up and opened downward to close the switch. Then, the two toggle levers 22 move upward synchronously to reopen the closed switch of the circuit breaker main body 10, that is, complete one test. Then, the two toggle levers 22 are reset to restore the state where the two toggle levers 22 are respectively on the upper and lower sides of the switch, waiting for the downward movement test operation. Then, the movable rod 14 will start to work, telescopically abutting against the reset panel on the circuit breaker main body 10 to reset the front switch of the circuit breaker main body 10. At the same time, the movable rod 14 retracts. Then, the toggle lever 22 can work again to test the front switch of the circuit breaker main body 10 and repeat it multiple times. When the guide block 18 moves up and down, it will synchronously drive the slide plate 28 to slide inside the sliding sleeve b27, and the sliding sleeve b27 slides inside the sliding sleeve a26, so as to block the hollow part of the slide rail 19 according to different moving positions of the guide block 18.

[0044] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A driving mechanism for life testing of a molded case circuit breaker, comprising a positioning rail (6) and a circuit breaker body (10) mounted on the rear side of the positioning rail (6); A movable rod (14) is provided on the right side of the positioning guide rail (6) to touch the reset sensing area on the front side of the circuit breaker body (10) to reset the switch on the front side of the circuit breaker body (10); A slide rail (19) is provided on the right side of the positioning guide rail (6); The slide rail (19) is internally connected to a guide block (18) in a transmission manner, a plurality of toggle rods (22) are arranged on the front side of the guide block (18), and rollers (23) are arranged on the opposite sides of two toggle rods (22) to push the switch on the front side of the circuit breaker body (10) to toggle up and down, and a driver (20) is arranged on the outer wall of the upper end of the slide rail (19) to control the guide block (18) to move up and down; It is characterized in that: Slide sleeves a (26) are provided on the left side of the slide rail (19) and close to the upper and lower sides respectively. Slide sleeves b (27) are slidably connected inside the two slide sleeves a (26). Slide plates (28) are slidably connected inside the two slide sleeves b (27) to cover the hollow part of the slide rail (19).

2. The driving mechanism for the life test of the plastic case circuit breaker according to claim 1, characterized in that: One end of the two slide plates (28) that abuts against the guide block (18) is fixedly connected with a magnetic plate (30) to connect the slide plates (28) and the guide block (18), and the inner walls of the left and right ends of the two slide sleeves a (26) and the slide sleeve b (27) are provided with slide grooves (32).

3. The driving mechanism for the life test of the molded case circuit breaker according to claim 1, wherein: The left and right outer walls of the sliding sleeve b (27) and the sliding plate (28) are fixedly connected with a sliding rod (31) penetrating the interior of the sliding groove (32), and the front end outer walls of the two sliding sleeves a (26) are respectively provided with fixing screws (29) penetrating the interior of the sliding rail (19) backwards to limit the position of the sliding sleeve a (26).

4. The driving mechanism for the life test of a molded case circuit breaker according to claim 1, characterized in that: The front end outer wall of the guide block (18) is fixedly connected to a porous plate (21), the rear end outer walls of the two toggle rods (22) are fixedly connected to fixing feet (25) to fix the toggle rods (22) on the porous plate (21), the opposite sides of the two toggle rods (22) are fixedly connected to positioning shafts (24) to limit the position of the roller (23), and the front end outer wall of the positioning guide rail (6) is fixedly connected to a baffle (17) to limit the position of the slide rail (19).

5. A driving mechanism for the life test of a molded case circuit breaker according to claim 1, characterized in that: The front end outer wall of the positioning guide rail (6) is fixedly connected with a positioning clamp (7) to limit the position of the movable rod (14), and the front end outer wall of the positioning clamp (7) is provided with a fixing bolt (15) to fix the positioning clamp (7) on the positioning guide rail (6).

6. The driving mechanism for the life test of a molded case circuit breaker according to claim 1, characterized in that: The rear end outer wall of the circuit breaker body (10) is fixedly connected to a fixing plate (9), the rear end outer wall of the fixing plate (9) is fixedly connected to a fixing frame (8), and the front end outer wall of the fixing frame (8) is fixedly connected to a base (1).

7. A driving mechanism for life test of a molded case circuit breaker according to claim 6, characterized in that: The upper outer wall of the base (1) is fixedly connected to a workbench (4), and the upper outer wall of the workbench (4) is provided with a plurality of mounting holes (3).

8. A driving mechanism for life test of a molded case circuit breaker according to claim 7, characterized in that: The outer wall of the upper end of the workbench (4) is provided with a longitudinal movement component (2) that penetrates downward into the installation hole (3). The outer wall of the upper end of the longitudinal movement component (2) is drivingly connected to a transverse movement component (5) to limit the position of the positioning guide rail (6). The outer wall of the front end of the longitudinal movement component (2) and the outer wall of the left end of the transverse movement component (5) are both provided with adjusting handwheels (16).

9. The driving mechanism for the life test of a molded case circuit breaker according to claim 6, characterized in that: The inner and outer walls of the right end of the fixed frame (8) are fixedly connected with a controller (11). The outer wall of the front end of the controller (11) is embedded with a display screen (13).

10. A driving mechanism for the life test of a molded case circuit breaker according to claim 9, characterized in that: A plurality of control buttons (12) are equidistantly arranged on the outer wall of the front end of the controller (11) near the right side. The plurality of control buttons (12) respectively have the functions of power switch, manual, start, stop, and reset.

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