A carbon brush holder pressure resistance detection device

Abstract

The utility model relates to carbon brush holder pressure resistance detection technical field, and disclose a kind of carbon brush holder pressure resistance detection device, including workbench, the top of workbench is fixed with support rod, the top of support rod is fixed with top plate, the top of workbench is provided with fixed assembly and limiting assembly, this carbon brush holder pressure resistance detection device, through the limiting assembly of being set, when knob rotates, movable rod passes through spring two, so that reciprocating enters stable groove, cannot influence knob normal rotation, and cannot occur knob autorotation, when clamping plate clamping is completed, press down L-shaped plate, so that connecting block and the plane of card block are engaged, realize the limiting of L-shaped plate, so that it is pasted knob surface, to lock movable rod and long rod, prevent knob accidental rotation, avoid affecting subsequent normal processing.Secondly press down L-shaped plate, connecting block moves down, release after spring three to push its move up and slide back, L-shaped plate is separated from knob, can normal operation, while magnet adsorbs movable block homing.

Description

Technical Field

[0001] This utility model relates to the field of carbon brush holder pressure resistance testing technology, specifically a carbon brush holder pressure resistance testing device. Background Technology

[0002] The carbon brush holder (also known as a carbon brush holder or carbon brush bracket) is a critical component in motors, generators, or rotating electrical appliances. It is used to hold the carbon brushes in place and ensure good contact between the carbon brushes and the rotating slip rings (or commutator). In high-voltage or high-current environments, the insulation performance of the carbon brush holder is crucial to prevent breakdown or short circuits. Therefore, it is necessary to use a carbon brush holder withstand voltage breakdown tester for testing.

[0003] A search revealed a carbon brush holder pressure breakdown testing device with publication number CN222704682U. This application places the carbon brush holder between rubber clamps, and due to the elasticity of the support spring, the carbon brush holder is quickly clamped and fixed.

[0004] However, the aforementioned existing technology has significant shortcomings: its clamping mechanism relies solely on the radial force of a spring to fix the carbon brush holder. In practical applications, this clamping method has revealed the following problems: First, for carbon brush holders of different sizes or slightly different shapes, the clamping force provided by the spring may be insufficient or excessive, resulting in poor compatibility; second, during testing, especially during prolonged testing or when the equipment experiences slight vibration, the carbon brush holder is prone to sliding or shifting within the fixture, making the clamping insufficiently secure and reliable. This unstable clamping state directly affects the relative position of the carbon brush holder and the test electrode, potentially leading to poor contact, inaccurate test data, or even misjudgment of breakdown due to arcing, severely impacting the reliability and consistency of the test results. Utility Model Content

[0005] The purpose of this invention is to provide a carbon brush holder pressure resistance testing device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a carbon brush holder pressure resistance testing device, including a workbench, a support rod fixed to the top of the workbench, a top plate fixed to the top of the support rod, and a fixing component and a limiting component provided on the top of the workbench;

[0007] The limiting component includes:

[0008] The slide is used to stabilize its internal mechanism;

[0009] The movable rod is used in conjunction with the stabilizing groove to prevent the mechanism from rotating on its own.

[0010] Linkage components are used to achieve limit protection.

[0011] Preferably, the fixing assembly includes a fixing platform fixed to the top of the workbench. A screw is rotatably connected to the inner side of the fixing platform. A threaded block is slidably connected to the inner wall of the fixing platform. The screw passes through the threaded block and is threadedly connected to the threaded block. A movable frame is fixed to the top of the threaded block and is slidably connected to the top of the fixing platform. A rocker arm is rotatably connected to the outer surface of the fixing platform. The output shaft of the rocker arm passes through the fixing platform and is fixed to the outer surface of the screw. A clamping plate is slidably connected to the inner wall of the movable frame. A spring is fixed to the outer surface of the clamping plate. The end of the spring away from the clamping plate is fixed to the inner wall of the movable frame. A limit block is slidably connected to the inner wall of the movable frame. A threaded groove is formed on the outer surface of the limit block. A knob is rotatably connected to the outer surface of the movable frame. A screw is fixed to the output shaft of the knob. The screw passes through the movable frame and is threadedly connected to the inner wall of the threaded groove. Rotating the rocker arm causes the screw to rotate, pushing the clamping plate to close and fit against the carbon brush holder. Multiple clamping plates can adapt to different shapes. Then, turn the knob to drive the limit block to press against the clamping plate, thereby locking it and preventing loosening.

[0012] Preferably, the slide groove is formed on the outer surface of the knob, and a movable rod is slidably connected to the inner wall of the slide groove. A second spring is fixed to the outer surface of the movable rod, and the end of the second spring away from the movable rod is fixed to the inner wall of the slide groove. A long rod is fixed to the outer surface of the movable rod, and the end of the long rod away from the movable rod passes through the knob and is slidably connected to the knob. A stabilizing groove is formed on the outer surface of the moving frame, and the end of the movable rod away from the second spring is set to be arc-shaped. When the knob is rotated, the outer surface of the movable rod abuts against the inner wall of the stabilizing groove, pushing the movable rod into the slide groove and compressing the second spring at the same time. When the movable rod moves to be parallel to the stabilizing groove, the second spring is released, pushing the movable rod to reset and re-enter the stabilizing groove. At this time, the long rod is level with the outer surface of the knob, which will not affect the normal rotation of the knob and will not cause the knob to rotate on its own.

[0013] Preferably, the linkage includes an L-shaped plate, which is disposed at the top of the movable frame. A fixing rod is fixed to the top of the movable frame, the fixing rod passing through the L-shaped plate and slidably connected to the L-shaped plate. A spring three is fixed to the outer surface of the L-shaped plate, the bottom of the spring three being fixed to the top of the movable frame. A locking block is fixed to the outer surface of the movable frame, a movable block is slidably connected to the outer surface of the movable frame, and a magnet is fixed to the outer surface of the movable frame, the magnet being magnetically connected to the movable block. A connecting frame is fixed to the outer surface of the L-shaped plate, a connecting block is slidably connected to the inner wall of the connecting frame, and a spring four is fixed to the outer surface of the connecting block. The end of the spring four away from the connecting block is fixed to the inner wall of the connecting frame. When the L-shaped plate is pressed down, the inclined surface of the connecting block contacts the inclined surface of the locking block, causing the connecting block to retract and compress the spring four. After release, the connecting block and the locking block engage, limiting the L-shaped plate and making it fit against the knob surface, thereby locking the movable rod and the long rod and preventing the knob from rotating accidentally. When releasing, press down the L-shaped plate again to move the connecting block down. After releasing, the spring pushes the connecting block up and slides back along the surface of the movable block. The L-shaped plate disengages from the knob, and the knob can be operated normally to reset the clamp plate. At the same time, the magnet attracts the movable block back into place.

[0014] Preferably, a cylinder is fixed to the top of the top plate, and a fixed shell is fixed to the bottom of the top plate. The output end of the cylinder passes through the top plate and the fixed shell, and a multimeter is fixed to the bottom of the output end of the cylinder via a mounting bracket. A pressure withstand tester is fixed to the bottom of the output end of the cylinder via a mounting bracket. The output end of the pressure withstand tester is connected to a test clip via a test line. The multimeter is connected to a test probe via a test line. A visual inspection camera is mounted on the bottom of the top plate via a mounting bracket for convenient inspection work.

[0015] Preferably, the outer surface of the screw has two opposite threads, which can cause the threaded blocks to move closer or further apart synchronously when rotated.

[0016] Preferably, the end of the connecting block away from the spring is set as an inclined surface, and the side of the locking block and the movable block away from each other is set as an inclined surface. The inclined surface of the connecting block is abutted, which allows the connecting block to move into the connecting frame without affecting the normal downward movement of the L-shaped plate. When the locking block and the movable block are close to each other, it is easy to release the restriction on the connecting block and the L-shaped plate.

[0017] Compared with the prior art, this utility model provides a carbon brush holder pressure resistance testing device, which has the following beneficial effects:

[0018] 1. This carbon brush holder pressure resistance testing device, through its limiting components, ensures that when the knob is rotated, the movable rod, via spring two, reciprocates into the stabilizing groove, preventing normal knob rotation and self-rotation. When the clamping plate is fully engaged, the L-shaped plate is pressed down, causing the connecting block to engage with the locking block plane, thus limiting the L-shaped plate and ensuring it conforms to the knob surface. This locks the movable rod and the long rod, preventing accidental knob rotation and avoiding interference with subsequent processing. Pressing down the L-shaped plate again causes the connecting block to move downwards; upon release, spring three pushes it upwards and slides back, disengaging the L-shaped plate from the knob, allowing normal operation. Simultaneously, the magnet attracts the movable block back into position.

[0019] 2. This carbon brush holder pressure resistance testing device, through a fixed assembly, rotates the rocker arm, and as the screw rotates, it pushes the clamping plates to close and fit the carbon brush holder. Multiple clamping plates can adapt to different shapes, facilitating the adaptation to different carbon brush holders. Rotating the knob drives the limit block to press against the clamping plate, achieving locking, preventing loosening, and facilitating subsequent processing. Attached Figure Description

[0020] Figure 1 This is a front view structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0022] Figure 3 This is a top view of the fixing component of this utility model;

[0023] Figure 4 This is a front view structural diagram of some of the fixing components and limiting components of this utility model;

[0024] Figure 5 This is a front view schematic diagram of the stabilizing groove and the moving frame of this utility model;

[0025] Figure 6 This is a cross-sectional structural diagram of some of the fixing components and limiting components of this utility model.

[0026] In the diagram: 1. Workbench; 2. Support rod; 3. Top plate; 4. Cylinder; 5. Fixed shell; 6. Pressure tester; 7. Visual inspection camera; 10. Multimeter; 8. Fixed assembly; 80. Fixed platform; 81. Screw 1; 82. Threaded block; 83. Rocker arm; 84. Moving frame; 85. Clamping plate; 86. Spring 1; 87. Limiting block; 88. Threaded groove; 89. Screw 2; 800. Knob; 9. Limiting assembly; 90. Slide groove; 91. Movable rod; 92. Spring 2; 93. Long rod; 94. Stabilizing groove; 95. Linkage component; 950. L-shaped plate; 951. Fixed rod; 952. Spring 3; 953. Connecting frame; 954. Connecting block; 955. Spring 4; 956. Locking block; 957. Movable block; 958. Magnet. Detailed Implementation

[0027] like Figures 1-6 As shown, this utility model provides a technical solution: a carbon brush holder pressure resistance testing device, including a workbench 1, a support rod 2 fixed on the top of the workbench 1, a top plate 3 fixed on the top of the support rod 2, and a fixing component 8 and a limiting component 9 provided on the top of the workbench 1; the limiting component 9 includes: a sliding groove 90, a movable rod 91, a second spring 92, a long rod 93, a stabilizing groove 94, a connecting member 95, an L-shaped plate 950, a fixing rod 951, a third spring 952, a connecting frame 953, a connecting block 954, a fourth spring 955, a locking block 956, a movable block 957, and a magnet 958.

[0028] A slide groove 90 is formed on the outer surface of the knob 800. A movable rod 91 is slidably connected to the inner wall of the slide groove 90. A second spring 92 is fixed to the outer surface of the movable rod 91. The end of the second spring 92 away from the movable rod 91 is fixed to the inner wall of the slide groove 90. A long rod 93 is fixed to the outer surface of the movable rod 91. The end of the long rod 93 away from the movable rod 91 passes through the knob 800, and the long rod 93 is slidably connected to the knob 800. A stabilizing groove 94 is formed on the outer surface of the moving frame 84. The end furthest from spring 92 is rounded. The linkage 95 includes an L-shaped plate 950, which is positioned at the top of the movable frame 84. A fixing rod 951 is fixed to the top of the movable frame 84, passing through the L-shaped plate 950 and slidably connected to it. Spring 952 is fixed to the outer surface of the L-shaped plate 950, with its bottom fixed to the top of the movable frame 84. A locking block 95 is fixed to the outer surface of the movable frame 84. 6. A movable block 957 is slidably connected to the outer surface of the movable frame 84. A magnet 958 is fixed to the outer surface of the movable frame 84, and the magnet 958 is magnetically connected to the movable block 957. A connecting frame 953 is fixed to the outer surface of the L-shaped plate 950. A connecting block 954 is slidably connected to the inner wall of the connecting frame 953. A spring 955 is fixed to the outer surface of the connecting block 954. The end of the spring 955 away from the connecting block 954 is fixed to the inner wall of the connecting frame 953. One end of spring 955 is set as an inclined surface, and the side of the locking block 956 and the movable block 957 that are far apart from each other is set as an inclined surface. When the knob 800 is rotated, the outer surface of the movable rod 91 abuts against the inner wall of the stabilizing groove 94, pushing the movable rod 91 to slide into the sliding groove 90, while compressing the second spring 92. When the movable rod 91 moves to be parallel to the stabilizing groove 94, the second spring 92 is released, pushing the movable rod 91 to reset and re-enter the stabilizing groove 94. At this time, the long rod 93 is level with the outer surface of the knob 800. Then, the L-shaped plate 950 is pressed down, and the inclined surface of its connecting block 954 contacts the inclined surface of the locking block 956, pushing the connecting block 954 back into the connecting frame 953 and compressing the spring 955. When the connecting block 954 moves between the locking block 956 and the movable block 957, the L-shaped plate 950 is released, and the flat sides of the connecting block 954 and the locking block 956 engage with each other, thereby limiting the L-shaped plate 950 and making it fit against the surface of the knob 800, thereby locking the long rod 93 and the movable rod 91, preventing the knob 800 from rotating accidentally or vibrating, which would cause the clamp 85 to become unstable. When the limit needs to be released, press down the L-shaped plate 950 again to move the connecting block 954 down to below the movable block 957. After release, the spring 952 pushes the L-shaped plate 950 and the connecting block 954 up, and the movable block 957 moves closer to the locking block 956. The connecting block 954 slides back along the surface of the movable block 957 to above the locking block 956, and the L-shaped plate 950 disengages from the knob 800. Then the knob 800 can be rotated normally. The spring 86 drives the clamping plate 85 to reset. At the same time, the magnet 958 attracts the movable block 957 to reset it.

[0029] The fixing assembly 8 includes a fixing platform 80, which is fixed to the top of the workbench 1. A screw 81 is rotatably connected to the inner side of the fixing platform 80. A threaded block 82 is slidably connected to the inner wall of the fixing platform 80. The screw 81 passes through the threaded block 82 and is threadedly connected to the threaded block 82. A movable frame 84 is fixed to the top of the threaded block 82 and is slidably connected to the top of the fixing platform 80. A rocker arm 83 is rotatably connected to the outer surface of the fixing platform 80. The output shaft of the rocker arm 83 passes through the fixing platform 80 and is fixed to the outer surface of the screw 81. A clamping plate 85 is slidably connected to the inner wall of the movable frame 84. A spring 86 is fixed to the outer surface. The end of the spring 86 away from the clamping plate 85 is fixed to the inner wall of the movable frame 84. A limit block 87 is slidably connected to the inner wall of the movable frame 84. A threaded groove 88 is formed on the outer surface of the limit block 87. A knob 800 is rotatably connected to the outer surface of the movable frame 84. A screw 89 is fixed to the output shaft of the knob 800. The screw 89 passes through the movable frame 84 and is threaded onto the inner wall of the threaded groove 88. The outer surface of the screw 81 has two opposite threads. Rotating the rocker arm 83 causes the screw 81 to rotate, pushing the threaded block 82 and the movable frame 84 closer together, so that the clamping plate 85 fits against the surface of the carbon brush holder. Multiple sets of clamping plates 85 can adapt to carbon brush holders of different shapes. Then, rotating the knob 800 drives the screw 89 to rotate, causing the limit block 87 to move towards the clamping plate 85, so that the clamping plates 85 abut against each other to achieve limiting and prevent accidental loosening of the clamping.

[0030] A cylinder 4 is fixed to the top of the top plate 3, and a fixed shell 5 is fixed to the bottom of the top plate 3. The output end of the cylinder 4 passes through the top plate 3 and the fixed shell 5. A multimeter 10 is fixed to the bottom of the output end of the cylinder 4 via a mounting bracket. A pressure tester 6 is fixed to the bottom of the output end of the cylinder 4 via a mounting bracket. A test clip is connected to the output end of the pressure tester 6 via a test line. A test probe is connected to the multimeter 10 via a test line. A visual inspection camera 7 is installed at the bottom of the top plate 3 via a mounting bracket for convenient inspection work.

[0031] When the carbon brush holder needs to be tested, it is placed on top of the fixed platform 80. Rotating the rocker arm 83 will cause the screw 81 to rotate, which in turn causes the threaded block 82 to move the moving frame 84 closer together. At this point, the outer surface of the clamping plate 85 contacts the carbon brush holder. The multiple clamping plates 85 allow them to conform to the surface of the carbon brush holder, accommodating different types of carbon brush holders. Rotating the knob 800 will then cause the screw 89 to rotate, moving the limiting block 87 closer to the clamping plate 85. This ensures that the clamping plates 85 abut against each other, preventing accidental slippage and ensuring proper clamping. Simultaneously, when the knob 800 is rotated, the outer surface of the movable rod 91 abuts against the inner wall of the stabilizing groove 94, moving the movable rod 91 into the sliding groove 9. Within 0, spring 2 92 is compressed, at which point movable rod 91 drives long rod 93 to protrude from knob 800. When movable rod 91 is parallel to stabilizing groove 94, spring 2 92 is released, which drives movable rod 91 to reset and enter stabilizing groove 94. At this time, long rod 93 is flush with the outer surface of knob 800. At this time, L-shaped plate 950 is pressed down, and the inclined surface of connecting block 954 abuts against the inclined surface of locking block 956, which drives connecting block 954 to move into connecting frame 953. At the same time, spring 4 955 is compressed. When connecting block 954 is between locking block 956 and movable block 957, L-shaped plate 950 is released. At this time, the side of connecting block 954 away from the inclined surface abuts against the side of locking block 956 away from the inclined surface, which limits the L-shaped plate 950. When the outer surface of 950 is in contact with the outer surface of the knob 800, the long rod 93 and the movable rod 91 are limited, which in turn limits the knob 800. At this time, the knob 800 cannot continue to rotate, which can prevent vibration or accidental contact during subsequent processing, which could cause the knob 800 to rotate and affect the stability of the clamping plate 85. At this time, the cylinder 4 can be opened normally, so that one set of test clips of the withstand voltage tester 6 is clamped on the power input terminal of the carbon brush holder or other live parts, and the other set of test clips is clamped on the ground wire terminal of the power input terminal of the carbon brush holder. This allows the tester to detect whether the carbon brush holder has been broken down under the specified voltage, thereby quickly testing the yield rate of the carbon brush holder. The test probe connected to the multimeter 10 can be used to easily detect the local current and voltage values ​​of the carbon brush holder under the breakdown effect, which is easy for personnel to understand. The visual inspection camera 7 facilitates the recording of the inspection process and transmits the data to a connected industrial computer for remote monitoring, improving test safety. When removal is needed, the reverse rocker 83 can be released, and the L-shaped plate 950 can be pressed down again. When the connecting block 954 is below the movable block 957, the L-shaped plate 950 is released, and the spring 952 is released. This allows the L-shaped plate 950 and connecting block 954 to move the movable block 957 closer to the locking block 956. When the movable block 957 and locking block 956 are in contact, the connecting block 954 moves along the outer surface of the movable block 957 to the outer surface of the locking block 956, thus resetting the L-shaped plate 950 and removing it from contact with the knob 800. At this point, the knob 800 can be reversed normally.Spring 86 can reset clamp 85, facilitating continued use, while magnet 958 attracts movable block 957 to reset.

[0032] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A carbon brush holder pressure resistance testing device, comprising a workbench (1), characterized in that: The top of the workbench (1) is fixed with a support rod (2), the top of the support rod (2) is fixed with a top plate (3), and the top of the workbench (1) is provided with a fixing component (8) and a limiting component (9). The limiting component (9) includes: The slide (90) is used to stabilize its internal mechanism; Movable rod (91) is used to cooperate with stabilizing groove (94) to prevent the mechanism from rotating on its own; Linkage (95) is used for limit protection.

2. The carbon brush holder pressure resistance testing device according to claim 1, characterized in that: The fixing assembly (8) includes a fixing platform (80), which is fixed to the top of the workbench (1). A screw (81) is rotatably connected to the inner side of the fixing platform (80), and a threaded block (82) is slidably connected to the inner wall of the fixing platform (80). The screw (81) passes through the threaded block (82), and the screw (81) and the threaded block (82) are threadedly connected. A movable frame (84) is fixed to the top of the threaded block (82), and the movable frame (84) is slidably connected to the top of the fixing platform (80). A rocker arm (83) is rotatably connected to the outer surface of the fixing platform (80). The output shaft of the rocker arm (83) passes through the fixing platform (80), and the output shaft of the rocker arm (83) is fixed. The outer surface of the screw (81) is fixed, and the inner wall of the movable frame (84) is slidably connected to a clamp (85). The outer surface of the clamp (85) is fixed to a spring (86). The end of the spring (86) away from the clamp (85) is fixed to the inner wall of the movable frame (84). The inner wall of the movable frame (84) is slidably connected to a limit block (87). The outer surface of the limit block (87) is provided with a threaded groove (88). The outer surface of the movable frame (84) is rotatably connected to a knob (800). The output shaft of the knob (800) is fixed to a screw (89). The screw (89) passes through the movable frame (84) and is threadedly connected to the inner wall of the threaded groove (88).

3. The carbon brush holder pressure resistance testing device according to claim 2, characterized in that: The slide groove (90) is formed on the outer surface of the knob (800). A movable rod (91) is slidably connected to the inner wall of the slide groove (90). A second spring (92) is fixed on the outer surface of the movable rod (91). The end of the second spring (92) away from the movable rod (91) is fixed on the inner wall of the slide groove (90). A long rod (93) is fixed on the outer surface of the movable rod (91). The end of the long rod (93) away from the movable rod (91) passes through the knob (800) and is slidably connected to the knob (800). A stabilizing groove (94) is formed on the outer surface of the moving frame (84). The end of the movable rod (91) away from the second spring (92) is set to be arc-shaped.

4. The carbon brush holder pressure resistance testing device according to claim 2, characterized in that: The linkage (95) includes an L-shaped plate (950), which is disposed on the top of the movable frame (84). A fixing rod (951) is fixed to the top of the movable frame (84). The fixing rod (951) passes through the L-shaped plate (950) and is slidably connected to the L-shaped plate (950). A spring (952) is fixed to the outer surface of the L-shaped plate (950). The bottom of the spring (952) is fixed to the top of the movable frame (84). A locking block (956) is fixed to the outer surface of the movable frame (84). The outer surface of the movable frame (84) is slidably connected to a movable block (957), and a magnet (958) is fixed to the outer surface of the movable frame (84). The magnet (958) is magnetically connected to the movable block (957). The outer surface of the L-shaped plate (950) is fixed to a connecting frame (953), and a connecting block (954) is slidably connected to the inner wall of the connecting frame (953). A spring four (955) is fixed to the outer surface of the connecting block (954), and one end of the spring four (955) away from the connecting block (954) is fixed to the inner wall of the connecting frame (953).

5. The carbon brush holder pressure resistance testing device according to claim 1, characterized in that: A cylinder (4) is fixed to the top of the top plate (3), and a fixed shell (5) is fixed to the bottom of the top plate (3). The output end of the cylinder (4) passes through the top plate (3) and the fixed shell (5). A multimeter (10) is fixed to the bottom of the output end of the cylinder (4) through a mounting bracket. A pressure tester (6) is fixed to the bottom of the output end of the cylinder (4) through a mounting bracket. A test clip is connected to the output end of the pressure tester (6) through a test line. A test probe is connected to the multimeter (10) through a test line. A visual inspection camera (7) is installed at the bottom of the top plate (3) through a mounting bracket.

6. The carbon brush holder pressure resistance testing device according to claim 2, characterized in that: The outer surface of the screw (81) has two opposite threads.

7. The carbon brush holder pressure resistance testing device according to claim 4, characterized in that: The end of the connecting block (954) away from the spring (955) is set as an inclined surface, and the side of the locking block (956) away from the movable block (957) is set as an inclined surface.

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