Instantaneous testboard for miniature circuit breaker

Abstract

The utility model discloses a miniature circuit breaker instantaneous testboard, which comprises a rack, a fixed disc fixedly installed at the center of the top of the rack, and a rotating disc rotatably installed at the top of the rack, a plurality of tool plates which are annularly distributed at equal intervals are fixedly installed on the rotating disc, and the tool plates are provided with accommodating grooves for accommodating circuit breakers. A feeding mechanism, a material distributing mechanism, a testing mechanism, a second discharging mechanism and a first discharging mechanism are sequentially arranged at the top of the rack in the rotating direction of the rotating disc, the feeding mechanism is used for clamping and conveying circuit breakers to the tool plate, and the material distributing mechanism is used for separating the multiple circuit breakers; according to the utility model, through the arrangement of the test mechanism, the material distribution mechanism, the feeding mechanism, the first blanking mechanism, the second blanking mechanism, the rotating disc and the tool plate, the automatic instantaneous operation characteristic test of the miniature circuit breaker is realized, so that the test efficiency is greatly improved, and the miniature circuit breaker which does not pass the test can be separated; and subsequent processes can be carried out conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit breaker test technical field, concretely is a kind of small circuit breaker instantaneous test bench. BACKGROUND

[0002] Small circuit breaker is a kind of compact structure, reliable performance small capacity plastic shell circuit breaker, it is widely used in industry, business, high-rise and civil residence and various places, as important protection element in distribution system, ensure the safe operation of circuit, small circuit breaker needs to be tested before delivery instantaneous action characteristic, ensure that it meets national standards and industry specifications.

[0003] Currently, small circuit breaker instantaneous action characteristic test is usually carried out by artificial means, not only test speed is slow, labor intensity is big, and artificial test error probability is larger, leading to inaccurate test. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of small circuit breaker instantaneous test bench to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of small circuit breaker instantaneous test bench, including rack, fixedly installed in the top center of rack fixed disc and rotationally installed in the top of rack rotating disc, the rotating disc is fixedly installed with a plurality of annular equidistant distribution tooling plate, the tooling plate is opened with the accommodation slot for accommodating circuit breaker, the top of rack is sequentially provided with feeding mechanism, distribution mechanism, test mechanism, second unloading mechanism and first unloading mechanism along the rotation direction of rotating disc, the feeding mechanism is used to clamp and send circuit breaker to tooling plate, the distribution mechanism is used to separate multiple circuit breakers, the test mechanism is used to test the instantaneous action characteristic of circuit breaker, the second unloading mechanism is used to unload and separate the circuit breaker that does not pass instantaneous action characteristic test, and the first unloading mechanism is used to unload the circuit breaker that passes instantaneous action characteristic test.

[0006] As a preferred scheme of the utility model, the feeding mechanism includes feeding rack fixed in the top of rack, the top of feeding rack is installed with first linear module, the moving end of first linear module is installed with feeding cylinder, and the output end of feeding cylinder is installed with first pneumatic clamp.

[0007] In a preferred embodiment of this utility model, the material distribution mechanism includes a support column installed on one side of the platform and a first belt conveyor installed on the top of the platform. A second guide rail is fixedly connected to the top of the support column, and a second slider is slidably installed on the outer side of the second guide rail. A material distribution cylinder is installed on one side of the support column, and a vertical rod is installed at the output end of the material distribution cylinder. One end of the vertical rod is connected to the second slider, and a T-shaped rod is installed on the top of the second slider. A first stop bar is installed on the top of the first belt conveyor, and a material distribution plate is fixedly installed on the outer side of the first belt conveyor. A baffle is provided on one side of the material distribution plate, and the baffle is located above the first belt conveyor. The height of the T-shaped rod is lower than the height of the first stop bar.

[0008] In a preferred embodiment of this utility model, the testing mechanism includes a testing frame mounted on the top of a platform. One side of the testing frame is connected to the platform, and the other side is connected to a fixed plate. Multiple first guide rails are symmetrically arranged on the top of the platform. A first slider is slidably mounted on the top of each first guide rail. A support plate is installed between adjacent first sliders. A second testing cylinder is mounted on the top of the support plate. Sliding rods are symmetrically mounted on the support plate. A top plate is connected between adjacent sliding rods. The output end of the second testing cylinder is connected to the top plate. First testing cylinders are symmetrically arranged on the outer side of the testing frame. The output end of each first testing cylinder is connected to an adjacent support plate. An electrode guide cavity is connected to the bottom of an adjacent sliding rod. Multiple electrode blocks are equidistantly distributed on one side of the electrode guide cavity. A connecting plate is fixedly connected between adjacent sliding rods. A closing cylinder is mounted on the top of the connecting plate. A push plate is fixedly connected to the output end of the closing cylinder.

[0009] As a preferred embodiment of this utility model, the second unloading mechanism includes a second unloading frame, an L-shaped frame, and a third belt conveyor, all installed on the top of the platform. A third linear module is installed on the top of the second unloading frame. A second unloading cylinder is provided at the moving end of the third linear module. A third pneumatic clamp is installed at the output end of the second unloading cylinder. A pusher cylinder is installed at one end of the L-shaped frame. A push rod is provided at the output end of the pusher cylinder. Second stop rods are symmetrically arranged on the top of the third belt conveyor, and one of the second stop rods has a notch.

[0010] As a preferred embodiment of the present invention, the first unloading mechanism includes a second belt conveyor and a first unloading frame respectively installed on the top of the platform. A second linear module is installed on the top of the first unloading frame. A first unloading cylinder is installed on the moving end of the second linear module. A second pneumatic clamp is provided at the output end of the first unloading cylinder.

[0011] As a preferred embodiment of this utility model, the inner sidewall of the receiving groove is provided with a protrusion, and the top edge of the receiving groove is provided with a chamfer.

[0012] As a preferred scheme of the utility model, the protrusion is a hemispherical structure, and the material of the protrusion is rubber.

[0013] Compared with the prior art, the utility model has the advantages that the test mechanism, the material separating mechanism, the feeding mechanism, the first discharging mechanism, the second discharging mechanism, the rotary disc and the tool plate are arranged to realize the automatic instantaneous action characteristic test of the small circuit breaker, the test efficiency is greatly improved, and the small circuit breaker that fails the test can be separated, so that subsequent processes can be carried out. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0015] Figure 2 It is a three-dimensional structure schematic view of the utility model Figure 1 It is an enlarged view of A in the utility model;

[0016] Figure 3 It is a top view of the utility model;

[0017] Figure 4 It is a structure schematic view of the test mechanism of the utility model;

[0018] Figure 5 It is a structure schematic view of the tool plate of the utility model.

[0019] In the drawing: 1, rack; 2, rotary disc; 3, fixed disc; 4, tool plate;

[0020] 5, test mechanism; 51, test frame; 52, electrode guide cavity; 53, electrode block; 54, connecting plate; 55, first guide rail; 56, first sliding block; 57, support plate; 58, sliding rod; 59, first test cylinder; 510, second test cylinder; 511, top plate; 512, closing cylinder; 513, push plate;

[0021] 6, material separating mechanism; 61, support column; 62, material separating cylinder; 63, second sliding block; 64, second guide rail; 65, T-shaped rod; 66, first belt conveyor; 67, first stop rod; 68, baffle; 69, material separating disc; 610, vertical rod;

[0022] 7, feeding mechanism; 71, feeding frame; 72, first pneumatic clamp; 73, feeding cylinder; 74, first linear module;

[0023] 8, first discharging mechanism; 81, first discharging frame; 82, first discharging cylinder; 83, second linear module; 84, second belt conveyor; 85, second pneumatic clamp;

[0024] 9, second unloading mechanism; 91, second unloading cylinder; 92, third pneumatic clamp; 93, third linear module; 94, second unloading frame; 95, L-shaped frame; 96, push rod; 97, notch; 98, push cylinder; 99, second range lever; 910, third belt conveyor;

[0025] 10, accommodating groove; 11, chamfer; 12, protrusion. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0027] Please refer to Figures 1 to 5 The utility model provides a kind of technical scheme: a kind of miniature circuit breaker transient test platform, including rack 1, fixedly installed in the top center of rack 1 fixed disc 3, and rotationally installed in the top of rack 1 rotating disc 2, rotating disc 2 is fixedly installed with multiple annular equidistant distribution tooling plate 4, accommodating groove 10 for accommodating circuit breaker is opened in tooling plate 4, the top of rack 1 is sequentially provided with feeding mechanism 7, distribution mechanism 6, test mechanism 5, second unloading mechanism 9 and first unloading mechanism 8 along the direction of rotation of rotating disc 2, feeding mechanism 7 is used to clamp and send circuit breaker to tooling plate 4, distribution mechanism 6 is used to separate multiple circuit breakers, test mechanism 5 is used to carry out transient action characteristic test to circuit breaker, second unloading mechanism 9 is used to unload and separate circuit breaker that does not pass transient action characteristic test, and first unloading mechanism 8 is used to unload circuit breaker that passes transient action characteristic test.

[0028] Among them, feeding mechanism 7 includes feeding frame 71 fixed in the top of rack 1, the top of feeding frame 71 is installed with first linear module 74, first linear module 74 is used to adjust the horizontal position of first pneumatic clamp 72, the moving end of first linear module 74 is installed with feeding cylinder 73, feeding cylinder 73 is used to adjust the height of first pneumatic clamp 72, the output end of feeding cylinder 73 is installed with first pneumatic clamp 72, and first pneumatic clamp 72 is used to clamp circuit breaker on distribution disc 69.

[0029] The distributing mechanism 6 comprises a support column 61 mounted on one side of the rack 1 and a first belt conveyor 66 mounted on the top of the rack 1, the top of the support column 61 is fixedly connected with a second guide rail 64, the outer side of the second guide rail 64 is slidingly connected with a second sliding block 63, one side of the support column 61 is mounted with a distributing air cylinder 62, the distributing air cylinder 62 is used to move a vertical rod 610, the vertical rod 610 moves the second sliding block 63, the second sliding block 63 drives a T-shaped rod 65 to move, thereby pushing the circuit breaker, the output end of the distributing air cylinder 62 is mounted with the vertical rod 610, one end of the vertical rod 610 is connected with the second sliding block 63, the top of the second sliding block 63 is mounted with the T-shaped rod 65, the T-shaped rod 65 is used to push the circuit breaker on the first belt conveyor 66 to the distributing disc 69, thereby facilitating the first pneumatic clamp 72 to clamp, the top of the first belt conveyor 66 is mounted with a first stop rod 67, the first stop rod 67 is used to limit the circuit breaker on the first belt conveyor 66, preventing it from deviating, the outer side of the first belt conveyor 66 is fixedly mounted with the distributing disc 69, one side of the distributing disc 69 is provided with a baffle 68, the baffle 68 is used to block the circuit breaker on the first belt conveyor 66, preventing the circuit breaker from falling off the first belt conveyor 66, the baffle 68 is located above the first belt conveyor 66, the height of the T-shaped rod 65 is lower than the height of the first stop rod 67, avoiding that the T-shaped rod 65 is blocked by the first stop rod 67 and cannot push the circuit breaker.

[0030] The test mechanism 5 comprises a test frame 51 mounted on the top of the rack 1, one side of the test frame 51 is connected with the rack 1, the other side of the test frame 51 is connected with the fixed disc 3, the top of the rack 1 is symmetrically provided with a plurality of first guide rails 55, the top of the first guide rail 55 is slidably provided with a first sliding block 56, the first sliding block 56 and the first guide rail 55 cooperate to make the support plate 57 more stable during movement, the adjacent first sliding blocks 56 are provided with the support plate 57, the top of the support plate 57 is provided with a second test cylinder 510, the second test cylinder 510 is used to move the top plate 511, the top plate 511 moves the electrode guide cavity 52 through the slide rod 58, thereby adjusting the height of the electrode block 53, the slide rod 58 is symmetrically and slidably provided on the support plate 57, the adjacent slide rods 58 are connected with the top plate 511, the output end of the second test cylinder 510 is connected with the top plate 511, the outer side of the test frame 51 is symmetrically provided with a first test cylinder 59, the first test cylinder 59 is used to move the support plate 57, thereby adjusting the horizontal position of the electrode block 53, the output end of the first test cylinder 59 is connected with the adjacent support plate 57, the bottom of the adjacent slide rods 58 is connected with the electrode guide cavity 52, one side of the electrode guide cavity 52 is provided with a plurality of electrode blocks 53 which are equidistantly distributed, the electrode block 53 is used to be inserted into the circuit breaker to contact the internal terminal, thereby connecting the circuit to test, the adjacent slide rods 58 are further fixedly connected with the connecting plate 54, the top of the connecting plate 54 is provided with a closing cylinder 512, the closing cylinder 512 is used to move the push plate 513, the push plate 513 pushes the handle of the circuit breaker to close the circuit breaker, the output end of the closing cylinder 512 is fixedly connected with the push plate 513.

[0031] The second blanking mechanism 9 comprises a second blanking frame 94, an L-shaped frame 95 and a third belt conveyor 910 which are respectively mounted on the top of the rack 1, the top of the second blanking frame 94 is provided with a third linear module 93, the third linear module 93 is used to adjust the horizontal position of the third pneumatic clamp 92, the moving end of the third linear module 93 is provided with a second blanking cylinder 91, the second blanking cylinder 91 is used to adjust the height of the third pneumatic clamp 92, the output end of the second blanking cylinder 91 is provided with the third pneumatic clamp 92, the third pneumatic clamp 92 is used to clamp the circuit breaker which fails to pass the transient action characteristic test, one end of the L-shaped frame 95 is provided with a pushing cylinder 98, the pushing cylinder 98 is used to move the push rod 96, the push rod 96 pushes the circuit breaker which fails to pass the transient action characteristic test to the third belt conveyor 910, thereby realizing separation, the output end of the pushing cylinder 98 is provided with the push rod 96, the top of the third belt conveyor 910 is symmetrically provided with a second stop rod 99, the second stop rod 99 is used to limit the circuit breaker on the third belt conveyor 910 to prevent it from deviating during movement, one of the second stop rods 99 is provided with a notch 97, the notch 97 facilitates the pushing cylinder 98 to push the circuit breaker which fails to pass the transient action characteristic test to the third belt conveyor 910.

[0032] The first discharging mechanism 8 comprises a second belt conveyor 84 and a first discharging frame 81 respectively installed on the top of the gantry 1, the top of the first discharging frame 81 is provided with a second linear module 83, the second linear module 83 is used for adjusting the horizontal position of a second pneumatic clamp 85, the moving end of the second linear module 83 is provided with a first discharging cylinder 82, the first discharging cylinder 82 is used for adjusting the height of the second pneumatic clamp 85, the output end of the first discharging cylinder 82 is provided with the second pneumatic clamp 85, and the second pneumatic clamp 85 is used for clamping the circuit breaker tested by the transient action characteristic.

[0033] The inner side wall of the accommodating groove 10 is provided with a protrusion 12, the protrusion 12 is used for abutting against the circuit breaker, so that the circuit breaker is more stable in the accommodating groove 10, and the top edge of the accommodating groove 10 is provided with a chamfer 11, the chamfer 11 makes the circuit breaker more easily put into the accommodating groove 10.

[0034] The protrusion 12 is a semispherical structure, the semispherical structure makes the circuit breaker more easily compress the protrusion 12, and the material of the protrusion 12 is rubber, the rubber has good elasticity and is easy to deform under the extrusion of the circuit breaker.

[0035] Specifically, when testing, the workers sequentially place the circuit breakers on the first belt conveyor 66, the first belt conveyor 66 conveys the circuit breakers until the circuit breakers are blocked by the baffle 68, then the distributing air cylinder 62 drives the vertical rod 610 to move, the vertical rod 610 drives the second sliding block 63 to move, and then drives the T-shaped rod 65 to move, the T-shaped rod 65 pushes part of the circuit breakers on the first belt conveyor 66 to the distributing disc 69, under the cooperation of the first linear module 74 and the feeding air cylinder 73, the first pneumatic clamp 72 clamps the circuit breakers on the distributing disc 69 and clamps and feeds the circuit breakers into the accommodating groove 10 on the adjacent tool plate 4, the rotating disc 2 drives the tool plate 4 to rotate, and the tool plate 4 carrying the circuit breakers is rotated to the testing mechanism 5, the second testing air cylinder 510 drives the top plate 511 to move, the top plate 511 drives the sliding rod 58 to move, the sliding rod 58 drives the connecting plate 54 and the electrode guide cavity 52 to move, and then the height of the push plate 513 and the electrode block 53 is adjusted to be aligned with the circuit breaker, then the first testing air cylinder 59 drives the support plate 57 to move, and then the electrode block 53 is moved, the electrode block 53 is inserted into the circuit breaker and contacts the internal terminal, then the closing air cylinder 512 drives the push plate 513 to move, the push plate 513 pushes the handle of the circuit breaker to close, after closing, the electrode block 53 connects the circuit to test the instantaneous action characteristic, after testing, the electrode block 53 and the push plate 513 are lifted to avoid blocking the circuit breaker, under the action of the rotating disc 2, the tested circuit breaker is rotated, if all the circuit breakers pass the test, the circuit breakers are rotated to the first discharging mechanism 8, the second pneumatic clamp 85 clamps and feeds the circuit breakers passing the test to the second belt conveyor 84, and the second belt conveyor 84 conveys the circuit breakers to the next process, if part of the circuit breakers do not pass the test, the circuit breakers are rotated to the second discharging mechanism 9, under the cooperation of the second discharging air cylinder 91 and the third linear module 93, the third pneumatic clamp 92 clamps and feeds the circuit breakers not passing the test from the tool plate 4 to the third belt conveyor 910, the third belt conveyor 910 conveys the circuit breakers, the circuit breakers move to one side of the gap 97, the pushing air cylinder 98 drives the push rod 96 to move, the push rod 96 pushes the circuit breakers not passing the test from the gap 97 to the third belt conveyor 910, so that the circuit breakers are separated, and other circuit breakers passing the test are conveyed to the next process under the conveying of the third belt conveyor 910.

[0036] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0037] In addition, the terms "first", "second", "third", "fourth" are only used for descriptive purpose and should not be understood as indicating or implying relative importance or implying a number of the technical features indicated, so that the features with "first", "second", "third", "fourth" can explicitly or implicitly include at least one of the features.

[0038] In the present application, unless otherwise expressly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screw connection" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise expressly limited, those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0039] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A miniature circuit breaker instantaneous test bench, comprising a bench (1), a fixed disc (3) fixedly installed at the center of the top of the bench (1), and a rotating disc (2) rotatably installed at the top of the bench (1), characterized in that: A plurality of tool plates (4) are fixedly installed on the rotating disc (2) in a ring shape and equidistantly distributed, and a containing groove (10) for accommodating a circuit breaker is formed on the tool plate (4); the top of the rack (1) is sequentially provided with a feeding mechanism (7), a distributing mechanism (6), a testing mechanism (5), a second discharging mechanism (9) and a first discharging mechanism (8) along the rotating direction of the rotating disc (2), the feeding mechanism (7) is used for clamping and feeding the circuit breaker onto the tool plate (4), the distributing mechanism (6) is used for separating a plurality of circuit breakers, the testing mechanism (5) is used for testing the transient action characteristic of the circuit breaker, the second discharging mechanism (9) is used for discharging and separating the circuit breaker that fails to pass the transient action characteristic test, and the first discharging mechanism (8) is used for discharging the circuit breaker that passes the transient action characteristic test.

2. A miniature circuit breaker instantaneous testing bench according to claim 1, characterized in that: The feeding mechanism (7) comprises a feeding frame (71) fixed on the top of the rack (1), a first linear module (74) is installed on the top of the feeding frame (71), a feeding cylinder (73) is installed on the moving end of the first linear module (74), and a first pneumatic clamp (72) is installed on the output end of the feeding cylinder (73).

3. A miniature circuit breaker instantaneous testing bench according to claim 1, characterized in that: The distributing mechanism (6) comprises a support column (61) installed on one side of the rack (1) and a first belt conveyor (66) installed on the top of the rack (1), a second guide rail (64) is fixedly connected to the top of the support column (61), a second sliding block (63) is slidably installed on the outer side of the second guide rail (64), a distributing cylinder (62) is installed on one side of the support column (61), a vertical rod (610) is installed on the output end of the distributing cylinder (62), one end of the vertical rod (610) is connected with the second sliding block (63), a T-shaped rod (65) is installed on the top of the second sliding block (63), a first stop rod (67) is installed on the top of the first belt conveyor (66), a distributing disc (69) is fixedly installed on the outer side of the first belt conveyor (66), a baffle (68) is arranged on one side of the distributing disc (69), the baffle (68) is located above the first belt conveyor (66), and the height of the T-shaped rod (65) is lower than the height of the first stop rod (67).

4. The miniature circuit breaker instantaneous testing station of claim 1, wherein: The test mechanism (5) comprises a test frame (51) installed on the top of the rack (1), one side of the test frame (51) is connected with the rack (1), the other side of the test frame (51) is connected with the fixed disc (3), the top of the rack (1) is symmetrically provided with a plurality of first guide rails (55), the top of the first guide rail (55) is slidably installed with a first sliding block (56), a support plate (57) is installed between adjacent first sliding blocks (56), a second test cylinder (510) is installed on the top of the support plate (57), a slide rod (58) is slidably installed on the support plate (57), a top plate (511) is connected between adjacent slide rods (58), the output end of the second test cylinder (510) is connected with the top plate (511), the outer side of the test frame (51) is symmetrically provided with a first test cylinder (59), the output end of the first test cylinder (59) is connected with adjacent support plates (57), the bottom of adjacent slide rods (58) is connected with an electrode guide cavity (52), a plurality of electrode blocks (53) are arranged on one side of the electrode guide cavity (52), a connecting plate (54) is fixedly connected between adjacent slide rods (58), a closing cylinder (512) is installed on the top of the connecting plate (54), and the output end of the closing cylinder (512) is fixedly connected with a push plate (513).

5. A miniature circuit breaker instantaneous testing bench according to claim 1, characterized in that: The second blanking mechanism (9) comprises a second blanking frame (94), an L-shaped frame (95) and a third belt conveyor (910) installed on the top of the rack (1) respectively, the top of the second blanking frame (94) is provided with a third linear module (93), the moving end of the third linear module (93) is provided with a second blanking cylinder (91), the output end of the second blanking cylinder (91) is provided with a third pneumatic clamp (92), one end of the L-shaped frame (95) is provided with a pushing cylinder (98), the output end of the pushing cylinder (98) is provided with a push rod (96), and the top of the third belt conveyor (910) is symmetrically provided with a second stop rod (99), and a notch (97) is formed in one of the second stop rods (99).

6. A miniature circuit breaker instantaneous testing bench according to claim 1, characterized in that: The first blanking mechanism (8) comprises a second belt conveyor (84) and a first blanking frame (81) installed on the top of the rack (1) respectively, the top of the first blanking frame (81) is provided with a second linear module (83), the moving end of the second linear module (83) is provided with a first blanking cylinder (82), and the output end of the first blanking cylinder (82) is provided with a second pneumatic clamp (85).

7. A miniature circuit breaker instantaneous testing station according to claim 1, characterized in that: The inner side wall of the accommodating groove (10) is provided with a protrusion (12), and the top edge of the accommodating groove (10) is provided with a chamfer (11).

8. A miniature circuit breaker instantaneous testing bench according to claim 7, characterized in that: The protrusion (12) is a hemispherical structure, and the material of the protrusion (12) is rubber.

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