Switching device testing device

Abstract

The utility model belongs to the technical field of testing equipment, and discloses a switching device testing device which comprises an electrode assembly and an adjusting mechanism. The plurality of electrode assemblies are distributed on the two sides of the to-be-tested switching device; each electrode assembly comprises a first driving mechanism, a second driving mechanism and an electrode; the second driving mechanism is connected to the output end of the first driving mechanism, and the electrode is connected to the output end of the second driving mechanism; the second driving mechanism is used for moving along the first direction under the driving of the first driving mechanism and driving the electrode to be inserted into a wire holder of the switching device; the electrode is used for moving along a second direction under the driving of the second driving mechanism and abutting against the wire holder; the first direction and the second direction form an included angle. And the adjusting mechanism is connected with each second driving mechanism and is used for adjusting the driving force of the second driving mechanism so as to adjust the pressure applied by the electrode to the wiring seat, so that the pressure between the electrode and the wiring seat is ensured to meet the test requirement, and the test accuracy and reliability are improved.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a testing device for switching electrical appliances. Background Technology

[0002] Before leaving the factory, switchgear undergoes a series of performance tests. For example, circuit breakers require multiple opening and closing operations under different voltages, auxiliary contact switching tests, accessory characteristic tests, long-delay characteristic tests, short-delay characteristic tests, instantaneous characteristic tests, and ground fault characteristic tests. Only after passing all tests can they be put on the market. The switchgear testing device used to perform performance tests on circuit breakers includes electrodes that can be driven to be inserted into the terminal block of the circuit breaker, forming a circuit with the terminal block to perform various tests.

[0003] Existing switchgear testing devices typically use a cylinder to drive multiple electrodes to move simultaneously. These electrodes are inserted into multiple terminals in a one-to-one correspondence to achieve electrical connection with the corresponding terminals. However, simply inserting the electrodes into the terminals makes it difficult to ensure stable contact between the electrodes and terminals, and it is also impossible to adjust the pressure between the electrodes and terminals. This makes it difficult to ensure that the pressure of the electrodes on the terminals accurately meets the set pressure required for testing, and thus cannot meet the testing requirements of high-end products.

[0004] Therefore, there is an urgent need for a testing device for switching electrical appliances to solve the above-mentioned problems existing in the prior art. Utility Model Content

[0005] The purpose of this invention is to provide a testing device for switching electrical appliances, which can ensure stable contact between the electrodes and the corresponding terminals, and ensure that the pressure between the electrodes and the terminals meets the set pressure required for the test, thereby improving the accuracy and reliability of product performance testing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A testing device for switching electrical appliances is provided, including electrode assemblies and adjustment mechanisms; multiple electrode assemblies are provided and distributed on both sides of the switching electrical appliance to be tested; each electrode assembly includes a first driving mechanism, a second driving mechanism, and electrodes;

[0008] The second driving mechanism is connected to the output end of the first driving mechanism, and the electrode is connected to the output end of the second driving mechanism;

[0009] The second driving mechanism is used to move along a first direction under the drive of the first driving mechanism, and drive the electrode to be inserted into the terminal block of the switching device; the electrode is used to move along a second direction under the drive of the second driving mechanism, and abut against the terminal block; wherein, the first direction and the second direction are set at an angle.

[0010] The adjustment mechanism is connected to each of the second drive mechanisms and is used to adjust the driving force of the second drive mechanism to adjust the pressure applied by the electrode to the terminal block.

[0011] As a preferred embodiment of the switching electrical appliance testing device provided by this utility model, the electrode assembly further includes a mounting base, a first drive frame, a connecting base, a second drive frame, and an electrode base;

[0012] The electrode is disposed on the electrode holder, and the electrode holder is connected to the output end of the second drive mechanism through the second drive frame; the second drive mechanism is connected to the output end of the first drive mechanism through the first drive frame, and the first drive mechanism is mounted on the mounting base;

[0013] The connecting seat is connected to the first drive frame, and the connecting seat is slidably connected to the mounting seat along the first direction; the electrode seat is slidably connected to the connecting seat along the second direction.

[0014] As a preferred embodiment of the switching electrical appliance testing device provided by this utility model, the electrode assembly further includes a first insulating plate, a second insulating plate, a first insulating fastener, and a second insulating fastener;

[0015] The first insulating plate is sandwiched between the first drive frame and the connecting seat, and the first insulating fastener passes through and connects the first drive frame and the connecting seat;

[0016] The second insulating plate is sandwiched between the second drive frame and the electrode holder, and the second insulating fastener passes through and connects the second drive frame and the electrode holder.

[0017] As a preferred embodiment of the switching electrical appliance testing device provided by this utility model, the electrode holder is provided with a wiring fastener, the wiring fastener is used to connect the lead wire, and the wiring holder is electrically connected to the lead wire through the electrode, the electrode holder and the wiring fastener;

[0018] The electrode and the wiring fastener are respectively disposed at both ends of the electrode seat along the second direction, and the second drive frame is located between the electrode and the wiring fastener.

[0019] As a preferred embodiment of the switching electrical appliance testing device provided by this utility model, the second driving mechanism is located on one side of the electrode holder, and the electrode holder is provided with a clearance notch for avoiding the second driving mechanism.

[0020] As a preferred embodiment of the switching device testing apparatus provided by this utility model, the switching device testing apparatus further includes a substrate and a protective cover, wherein the substrate has a front side and a back side disposed opposite to each other;

[0021] The front side is provided with a test area for placing switching electrical appliances; both sides of the test area are provided with through openings, and the protective cover is provided on the front side and covers the through openings, and the protective cover has an opening facing the test area;

[0022] The mounting base is located on the back side, and the first drive mechanism is located on the side of the mounting base facing away from the back side. One end of the electrode holder and the electrode pass through the through-hole and enter the protective cover. The electrode passes through the opening to be inserted into the terminal block.

[0023] As a preferred embodiment of the switching electrical appliance testing device provided by this utility model, four electrode assemblies are provided, and the four electrode assemblies are distributed in pairs on both sides of the test area.

[0024] The two sets of electrode assemblies are arranged in a mirror symmetrical manner; the two electrode assemblies in each set are located on both sides of the through opening and are arranged in a mirror symmetrical manner.

[0025] As a preferred embodiment of the switchgear testing device provided by this utility model, the first drive frame includes a mounting plate and a first boss and a second boss protruding from the mounting plate; the mounting plate is provided with a first mounting groove that engages with the output end of the first drive mechanism; a second mounting groove is formed between the first boss and the mounting plate, and the second mounting groove engages with the connecting seat; a third mounting groove is formed between the second boss and the mounting plate, and the third mounting groove engages with the second drive mechanism;

[0026] And / or, the second drive frame is provided with a fourth mounting slot and a fifth mounting slot distributed along the first direction, the fourth mounting slot engaging with the output end of the second drive mechanism, and the fifth mounting slot engaging with the electrode seat.

[0027] As a preferred embodiment of the switching electrical appliance testing device provided by this utility model, the electrode is provided with a contact head, which is used to abut against the terminal block; the second driving mechanism is provided with a driving rod that can move along the second direction, and the driving rod is connected to the second driving frame;

[0028] The distance between the center point of the contact head and the central axis of the drive rod in the first direction is less than a first distance threshold;

[0029] The distance between the center point of the contact head and the central axis of the drive rod in the third direction is less than the second distance threshold;

[0030] The first direction, the second direction, and the third direction are perpendicular to each other.

[0031] As a preferred embodiment of the switching electrical appliance testing device provided by this utility model, the second driving mechanism includes a cylinder, and the adjusting mechanism includes a pressure regulating valve. The inner cavity of the pressure regulating valve is connected to the inner cavity of the cylinder and is used to adjust the air pressure in the inner cavity of the cylinder.

[0032] The beneficial effects of this utility model are:

[0033] This invention provides a testing device for switching electrical appliances. By assembling multiple electrode assemblies, each electrode can be driven by a corresponding first and second driving mechanism to achieve electrical connection with a terminal block. Specifically, during testing, the first driving mechanism is first activated, causing the second driving mechanism and the electrode to move along a first direction, inserting the electrode into the terminal block of the switching electrical appliance. Then, the second driving mechanism is activated, causing the electrode to move along a second direction, applying pressure to the terminal block to achieve stable contact and ensure a good electrical connection. An adjustment mechanism connected to the second driving mechanism can adjust the driving force of the second driving mechanism, thereby adjusting the pressure applied by the electrode to the terminal block along the second direction. This ensures that the pressure between the electrode and the terminal block meets the set pressure required for testing, improving the accuracy and reliability of product performance testing. Attached Figure Description

[0034] Figure 1 This is a first isometric view of the switch electrical appliance testing device provided in a specific embodiment of this utility model;

[0035] Figure 2 This is a side view of the switch electrical appliance testing device provided in a specific embodiment of this utility model;

[0036] Figure 3 This is a second isometric view of the switch electrical appliance testing device provided in a specific embodiment of this utility model;

[0037] Figure 4 This is a schematic diagram of the structure of the switching device provided in a specific embodiment of this utility model;

[0038] Figure 5 This is a first isometric view of the electrode assembly of the switching electrical appliance testing device provided in a specific embodiment of this utility model;

[0039] Figure 6 This is a second isometric view of the electrode assembly of the switching electrical appliance testing device provided in a specific embodiment of this utility model;

[0040] Figure 7 This is an exploded view of the electrode assembly of the switching electrical appliance testing device provided in a specific embodiment of this utility model;

[0041] Figure 8 This is a schematic diagram of the structure of the first drive frame of the electrode assembly provided in a specific embodiment of this utility model;

[0042] Figure 9 This is a first plan view of the electrode assembly provided in a specific embodiment of the present invention;

[0043] Figure 10 This is a second plan view of the electrode assembly provided in a specific embodiment of the present invention;

[0044] Figure 11 This is a rear view of the switch electrical appliance testing device provided in a specific embodiment of this utility model;

[0045] Figure 12 This is the third isometric view of the switch electrical appliance testing device provided in a specific embodiment of this utility model.

[0046] In the picture:

[0047] 1. Electrode assembly; 2. Adjustment mechanism; 3. Base plate; 4. Protective cover; 5. Hanging plate; 6. Positioning clip; 7. Closing mechanism; 8. Solenoid valve;

[0048] 11. First drive mechanism; 12. Second drive mechanism; 13. Electrode; 14. Mounting base; 15. First drive frame; 16. Connecting base; 17. Second drive frame; 18. Electrode base; 19. First insulating plate; 110. Second insulating plate; 120. First insulating fastener; 130. Second insulating fastener; 140. First guide rail; 150. First slider; 160. Second guide rail; 170. Second slider;

[0049] 111. First housing; 112. Lifting rod; 113. First floating joint;

[0050] 121. Second housing; 122. Drive rod; 123. Second floating joint;

[0051] 131. Contact head;

[0052] 151. Mounting plate; 152. First boss; 153. Second boss; 154. First mounting slot; 155. Second mounting slot; 156. Third mounting slot;

[0053] 171. Fourth mounting slot; 172. Fifth mounting slot;

[0054] 181. Wiring fasteners; 182. Clearance notch;

[0055] 31. Front; 32. Back; 33. Test area; 34. Through-hole;

[0056] 61. Positioning groove;

[0057] 100. Switchgear; 101. Terminal block; 102. Operating handle. Detailed Implementation

[0058] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0059] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0060] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0061] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0062] like Figure 1 , Figure 2 as well as Figure 3 As shown, this embodiment provides a testing device for switching electrical appliances, which can be used to test such... Figure 4 The switching device 100 shown is subjected to performance testing. The switching device 100 is exemplarily a circuit breaker, with at least one terminal block 101 for wiring at each end. For example, for a 1P (single pole) circuit breaker, one terminal block 101 is provided at each end. Figure 4 The 2P (two-pole) circuit breaker shown has two terminals 101 at each end, and the 3P (three-pole) circuit breaker has three terminals 101 at each end. They will not be listed here.

[0063] See Figure 1 , Figure 2 as well as Figure 3 The switching device testing apparatus includes a substrate 3, an electrode assembly 1, and an adjustment mechanism 2 disposed on the substrate 3. Multiple electrode assemblies 1 are provided and distributed on both sides of the switching device 100 under test. Figure 5 and Figure 6 Each electrode assembly 1 includes a first driving mechanism 11, a second driving mechanism 12, and an electrode 13.

[0064] The second drive mechanism 12 is connected to the output end of the first drive mechanism 11, and the electrode 13 is connected to the output end of the second drive mechanism 12. The second drive mechanism 12 moves along a first direction under the drive of the first drive mechanism 11, causing the electrode 13 to insert into the terminal block 101 of the switching device 100. The electrode 13 moves along a second direction under the drive of the second drive mechanism 12 and abuts against the terminal block 101. The first and second directions are set at an angle. An adjustment mechanism 2 is connected to each of the second drive mechanisms 12 and is used to adjust the driving force of the second drive mechanism 12 to adjust the pressure applied by the electrode 13 to the terminal block 101.

[0065] By setting multiple electrode assemblies 1, each electrode 13 in each assembly 1 can be driven by a corresponding first drive mechanism 11 and second drive mechanism 12 to achieve electrical connection with the terminal block 101. Specifically, during testing, the first drive mechanism 11 is first driven to move the second drive mechanism 12 and the electrode 13 along a first direction, inserting the electrode 13 into the terminal block 101 of the switchgear 100. Then, the second drive mechanism 12 is driven to move the electrode 13 along a second direction, causing it to press against the terminal block 101 with a certain pressure, achieving stable contact and ensuring a good electrical connection. The driving force of the second drive mechanism 12 can be adjusted by the adjustment mechanism 2 connected to the second drive mechanism 12, thereby adjusting the pressure applied by the electrode 13 to the terminal block 101 along the second direction. This ensures that the pressure between the electrode 13 and the terminal block 101 meets the set pressure required for testing, improving the accuracy and reliability of product performance testing.

[0066] Specifically, in this embodiment, electrode 13 abuts against the terminal block of terminal block 101 along the second direction, and makes stable contact with the terminal block under a certain pressure.

[0067] In this embodiment, the substrate 3 is placed vertically on the entire test platform. The first direction is the vertical direction, the second direction is the front-to-back direction, which is also the thickness direction of the substrate 3, and the third direction is the left-to-right direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0068] In this embodiment, the second driving mechanism 12 includes a cylinder, and the adjusting mechanism 2 includes a pressure regulating valve. The inner cavity of the pressure regulating valve is connected to the inner cavity of the cylinder and is used to adjust the air pressure in the inner cavity of the cylinder. Specifically, the air inlet of the pressure regulating valve is used to connect to an air supply source, and the air outlet is used to connect to the inner cavity of the second driving mechanism 12 (cylinder). The amount of gas entering the cylinder can be adjusted by the adjusting valve, thereby adjusting the driving force of the cylinder and realizing the pressure adjustment between the electrode 13 and the terminal block 101.

[0069] In some other embodiments, the second drive mechanism 12 may also be a hydraulic cylinder, and the adjustment mechanism 2 includes a hydraulic valve for adjusting the amount of oil entering the hydraulic cylinder, thereby adjusting the driving force of the hydraulic cylinder and realizing the pressure adjustment between the electrode 13 and the terminal block 101.

[0070] See Figure 5 , Figure 6 as well as Figure 7The electrode assembly 1 further includes a mounting base 14, a first drive frame 15, a connecting base 16, a second drive frame 17, and an electrode holder 18. The mounting base 14 is mounted on the substrate 3 to achieve fixed mounting of the entire electrode assembly 1 on the substrate 3. The electrode 13 is disposed on the electrode holder 18, which is connected to the output end of the second drive mechanism 12 via the second drive frame 17. The second drive mechanism 12 is connected to the output end of the first drive mechanism 11 via the first drive frame 15, and the first drive mechanism 11 is mounted on the mounting base 14. The connecting base 16 is connected to the first drive frame 15 and is slidably connected to the mounting base 14 along a first direction; the electrode holder 18 is slidably connected to the connecting base 16 along a second direction.

[0071] When the first drive mechanism 11 is driven along the first direction, the first drive frame 15 drives the connecting seat 16, the second drive mechanism 12, the electrode seat 18, and the electrode 13 on the electrode seat 18 to move together along the first direction, so that the electrode 13 is inserted into the terminal block 101 of the switchgear 100. During this stage, the connecting seat 16 and the mounting seat 14 slide in the first direction, which can improve the stability and accuracy of movement. Then, the second drive mechanism 12 is controlled to drive along the second direction, so that the second drive frame 17 drives the electrode seat 18 and the electrode 13 to move along the second direction, so that the electrode 13 abuts against the terminal block 101, achieving stable contact with the terminal block 101. When the second drive mechanism 12 moves, its driving force can be adjusted by the pressure regulating valve, thereby adjusting the pressure of the electrode 13 on the terminal block 101 to make the pressure meet the test requirements. During this stage, the electrode seat 18 and the connecting seat 16 slide in the second direction, which improves the stability and accuracy of movement of the electrode seat 18 and the electrode 13 and avoids movement deviation.

[0072] More specifically, see Figure 5 , Figure 6 as well as Figure 7 The mounting base 14 is provided with a first guide rail 140 extending along a first direction. The connecting base 16 has a first slider 150 on the side facing the mounting base 14, and the first slider 150 and the first guide rail 140 are slidably engaged along the first direction. The connecting base 16 has a second guide rail 160 extending along a second direction on the side facing away from the mounting base 14, and the electrode base 18 has a second slider 170, which is slidably engaged with the second guide rail 160 along the second direction. It can be understood that the first guide rail 140 extends vertically, and the second guide rail 160 extends horizontally, and the two are perpendicular.

[0073] In this embodiment, the first driving mechanism 11 is preferably a cylinder, such as... Figure 12As shown, a solenoid valve 8 is also provided on the substrate 3. The inlet of the solenoid valve 8 is used to connect to the air supply source that supplies air to the first drive mechanism 11, and the outlet of the solenoid valve 8 is connected to the inner cavity of the first drive mechanism 11 to control the on / off state and flow rate of the gas. Of course, in other embodiments, the first drive mechanism 11 can also be a linear drive mechanism such as a hydraulic cylinder or an electric push rod.

[0074] To achieve electrical connection between electrode 13 and terminal block 101, electrode block 18 is made of a conductor material, such as iron alloy, copper, or copper alloy. The lead wire from the test power supply is electrically connected to electrode block 18. Terminal blocks 101 at both ends of switch 100 are electrically connected to electrode 13 of an electrode assembly 1, so as to connect switch 100 to the test circuit.

[0075] In this embodiment, see continue to refer to Figure 5 , Figure 6 as well as Figure 7 The electrode assembly 1 further includes a first insulating plate 19, a second insulating plate 110, a first insulating fastener 120, and a second insulating fastener 130. The first insulating plate 19 is sandwiched between the first drive frame 15 and the connecting seat 16. The first insulating fastener 120 passes through and connects the first drive frame 15 and the connecting seat 16, ensuring insulation between them while fixing the connection and preventing current from flowing between them. The second insulating plate 110 is sandwiched between the second drive frame 17 and the electrode holder 18. The second insulating fastener 130 passes through and connects the second drive frame 17 and the electrode holder 18, ensuring insulation between them while fixing the connection between the electrode holder 18 and the second drive frame 17, preventing current from flowing between them.

[0076] By setting the first insulating plate 19, the second insulating plate 110, the first insulating fastener 120 and the second insulating fastener 130, current can be prevented from flowing through the electrode seat 18 to the second drive frame 17, and current can be prevented from flowing through the second slider 170, the second guide rail 160 and the connecting seat 16 to the first drive frame 15, thus ensuring the isolation effect of current.

[0077] For example, both the first insulating plate 19 and the second insulating plate 110 are plastic plates, and the first insulating fastener 120 and the second insulating fastener 130 can be screws made of ceramic or plastic materials to ensure insulation reliability.

[0078] See Figure 5 and Figure 6The electrode holder 18 extends along the second direction and is equipped with a wiring fastener 181. The wiring fastener 181 is used to connect the lead wire from the test power supply. The terminal block 101 is electrically connected to the lead wire through the electrode 13, the electrode holder 18, and the wiring fastener 181, thereby connecting the switching device 100 into the test circuit. The electrode 13 and the wiring fastener 181 are respectively located at both ends of the electrode holder 18 along the second direction, and the second drive frame 17 is located between the electrode 13 and the wiring fastener 181. This allows wiring to be performed at the end of the electrode holder 18 away from the electrode 13, avoiding interference between the lead wire and the second drive frame 17, the second drive mechanism 12, etc., and making the lead wire layout of the device more reasonable.

[0079] For example, the wiring fastener 181 is a wiring screw.

[0080] See Figure 6 and Figure 7 In this embodiment, the first drive mechanism 11 includes a first housing 111, a lifting rod 112, and a first floating joint 113. The lifting rod 112 is movably disposed on the first housing 111 along a first direction. The first housing 111 is mounted on the mounting base 14 by fasteners such as screws. The lifting rod 112 is connected to the first drive frame 15 through the first floating joint 113. The second drive mechanism 12 includes a second housing 121, a drive rod 122, and a second floating joint 123. The second housing 121 is mounted on the first drive frame 15 by fasteners such as screws. The drive rod 122 is telescopically disposed on the second housing 121 along a second direction. The drive rod 122 is connected to the second drive frame 17 through the second floating joint 123.

[0081] See Figure 7 and Figure 8The first drive frame 15 includes a mounting plate 151 and a first boss 152 and a second boss 153 protruding from the mounting plate 151. Specifically, the first boss 152 protrudes in a first direction toward the location of the first housing 111, and the second boss 153 protrudes in a third direction. The mounting plate 151 is provided with a first mounting groove 154 that engages with the output end (i.e., the first floating joint 113) of the first drive mechanism 11; a second mounting groove 155 is formed between the first boss 152 and the mounting plate 151; the second mounting groove 155 engages with the connecting seat 16; and a third mounting groove 156 is formed between the second boss 153 and the mounting plate 151, and the third mounting groove 156 engages with the second housing 121 of the second drive mechanism 12. By providing the first mounting groove 154 that engages with the first floating joint 113, a stable connection between the lifting rod 112 and the first drive frame 15 can be ensured, and a certain assembly error can be accommodated. The connecting seat 16 can provide vertical support through the second mounting groove 155, ensuring a stable connection between the connecting seat 16 and the first drive frame 15. The second housing 121 of the second drive mechanism 12 is engaged in the third mounting groove 156 and connected to the second boss 153, which facilitates positioning the installation position of the second drive mechanism 12 and ensures installation stability.

[0082] See Figure 7 The second drive frame 17 is provided with a fourth mounting groove 171 and a fifth mounting groove 172 distributed along the first direction. The fourth mounting groove 171 engages with the output end of the second drive mechanism 12 (i.e., the second floating joint 123), and the fifth mounting groove 172 engages with the electrode holder 18. The drive rod 122 is located on the side of the second housing 121 facing away from the second boss 153, so that the second drive frame 17, which is connected to the second floating joint 123, is located on the side of the second housing 121 facing away from the first drive frame 15, resulting in a more compact and reasonable structural layout. By providing the fourth mounting groove 171 that engages with the second floating joint 123, a stable connection between the drive rod 122 and the second drive frame 17 can be ensured, and a certain assembly error can be accommodated. The fifth mounting groove 172 can be a U-shaped groove to more securely engage the electrode holder 18, achieving a stable connection with the electrode holder 18. The fourth mounting slot 171 and the fifth mounting slot 172 are distributed along the first direction, so that the electrode seat 18 and the second drive mechanism 12 are distributed along the first direction, making the structural layout more compact and reasonable, and saving the space occupied by the installation.

[0083] In this embodiment, see Figure 5 and Figure 7The second drive mechanism 12 is located on one side of the electrode holder 18. The electrode holder 18 is provided with a clearance notch 182 to avoid interference between the second housing 121 of the second drive mechanism 12 and the electrode holder 18, and to prevent electrical conduction between the electrode holder 18 and the second housing 121 due to contact. Furthermore, the second boss 153 extends to one side of the electrode holder 18, and the clearance notch 182 can also avoid the second boss 153.

[0084] In this embodiment, the first guide rail 140 is vertically arranged to support components such as the first slider 150, the first drive frame 15, the connecting seat 16, the second drive mechanism 12, the second drive frame 17, the electrode seat 18, and the electrode 13. The weight of these components is in the same direction as the extension of the first guide rail 140, and the weight is much less than the load-bearing capacity of the first guide rail 140, so it has little impact on its service life and will not cause the first guide rail 140 to bend or deform. However, the driving force of the second drive mechanism 12 and the reaction force of the terminal block 101 of the switch 100 on the electrode 13 may generate torque on the first guide rail 140, resulting in a large torsional load on the first guide rail 140.

[0085] like Figure 9 and Figure 10 As shown, an electrode 13 is provided with a contact head 131, which is used to abut against the terminal block 101. The reaction force of the terminal block 101 on the electrode 13 acts on the contact head 131, and the center point of the contact head 131 is the force center point of the electrode 13. The second drive mechanism 12 is connected to the second drive frame 17 through a drive rod 122, and the center of the driving force of the second drive mechanism 12 is the central axis of the drive rod 122.

[0086] When the center point of the contact head 131 coincides with the central axis of the drive rod 122, that is, when they are on the same straight line, the torque generated by the driving force of the second drive mechanism 12 and the reaction force of the terminal block 101 on the electrode 13 on the first guide rail 140 is zero. However, due to structural and space limitations, this ideal state is difficult to achieve. Therefore, the distance between the two centers can be minimized to reduce the torque acting on the first guide rail 140.

[0087] In this embodiment, as Figure 9 and Figure 10As shown, the distance between the center point of the contact head 131 and the central axis of the drive rod 122 in the first direction is less than a first distance threshold L1; the distance between the center point of the contact head 131 and the central axis of the drive rod 122 in the third direction is less than a second distance threshold L2. That is, by limiting the distance between these two centers in the first direction and the third direction, the vertical distance between these two centers is reduced, thereby minimizing the torque acting on the first guide rail 140 and extending the service life of the first guide rail 140.

[0088] Specifically, in this embodiment, the value of the first distance threshold L1 can be less than or equal to 7mm, and further less than or equal to 5.5mm. For example, the first distance threshold L1 is 5.5mm, 5mm, etc., but is not limited to the listed values ​​and ranges.

[0089] In this embodiment, the value of the second distance threshold L2 can be less than or equal to 9 mm, and further less than or equal to 7.5 mm. For example, the second distance threshold L2 is 7.5 mm, 7 mm, etc., but is not limited to the listed values ​​and ranges.

[0090] like Figure 3 , Figure 11 as well as Figure 12 As shown, the switching device testing apparatus also includes a protective cover 4 disposed on the substrate 3. The substrate 3 has a front side 31 and a back side 32 disposed opposite to each other. When the switching device testing apparatus is installed on the test bench, the front side 31 can face the tester, and the front side 31 is provided with a test area 33 for placing the switching device 100. The tester places the switching device 100 to be tested in the test area 33, and then connects the switching device 100 to the test circuit through the electrode assembly 1. Both sides of the test area 33 are provided with through openings 34. The protective cover 4 is disposed on the front side 31 and covers the through openings 34. The protective cover 4 has an opening facing the test area 33. The mounting base 14 is disposed on the back side 32, and the first drive mechanism 11 is disposed on the side of the mounting base 14 facing away from the back side 32. One end of the electrode holder 18 and the electrode 13 pass through the through opening 34 and enter the protective cover 4. The electrode 13 passes through the opening of the protective cover 4 to be inserted into the terminal block 101 of the switching device 100. That is, the mounting base 14, first drive mechanism 11, first drive frame 15, connecting base 16, second drive mechanism 12, and second drive frame 17 of electrode assembly 1 are all located on the back side 32 of substrate 3. Only the electrode holder 18 has one end of electrode 13 extending through the through-hole 34 into the protective cover 4 on the front side 31. This layout is more reasonable and makes the front side 31 of substrate 3 cleaner. By setting the protective cover 4, the charged electrode 13 and electrode holder 18 can be covered, which can isolate the charged parts and prevent electric shock. Furthermore, the protective cover 4 can be made of plastic material.

[0091] Furthermore, the test area 33 is equipped with a positioning structure for positioning and installing the switchgear 100, such as... Figure 1 , Figure 2 as well as Figure 3 As shown, the positioning structure includes a mounting plate 5 and a positioning clip 6. Both the mounting plate 5 and the positioning clip 6 are mounted on the front side 31 of the base plate 3. The mounting plate 5 and the housing of the switchgear 100 are provided with hook structures that engage with each other, and the positioning clip 6 is provided with a positioning groove 61 for engaging and fixing the switchgear 100. When installing the switchgear 100, it is simply hung on the mounting plate 5 and engaged into the positioning groove 61 on the positioning clip 6.

[0092] like Figure 2 and Figure 3 As shown, the front side 31 of the substrate 3 is also provided with a closing mechanism 7, which, in conjunction with... Figure 4 The switchgear 100 is also provided with an operating handle 102 for opening and closing the circuit. The closing mechanism 7 is used to push the operating handle 102 to close the switchgear 100. The closing mechanism 7 includes a toggle cylinder for toggling the operating handle 102.

[0093] like Figure 4 As shown, the circuit breaker under test is a 2P circuit breaker, with two terminal blocks 101 at each end. Figure 11 and Figure 12 As shown, four electrode assemblies 1 are disposed on the substrate 3, with the four electrode assemblies 1 arranged in pairs on both sides of the test area 33. That is, the two sets of electrode assemblies 1 are spaced apart along the first direction, and the circuit breaker under test is located between the electrode bases 18 of the two sets of electrode assemblies 1. The two sets of electrode assemblies 1 are arranged in a mirror symmetrical manner so that their respective electrodes 13 are close to the circuit breaker. The two electrode assemblies 1 in each group are spaced apart along the third direction and are disposed on both sides of the through-hole 34, and are arranged in a mirror symmetrical manner so that the electrode bases 18 of the two electrode assemblies 1 in each group are close to each other and pass through the same through-hole 34, and the electrodes 13 are close to the middle circuit breaker. By mirroring the four electrode assemblies 1, the electrodes 13 of the four electrode assemblies 1 can be brought closer to the location of the middle circuit breaker so as to be inserted into the terminal block 101 of the circuit breaker, making the layout more reasonable and compact, and enabling reliable testing of 2P circuit breakers.

[0094] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A testing device for switching electrical appliances, characterized in that, It includes an electrode assembly (1) and an adjustment mechanism (2); multiple electrode assemblies (1) are provided and distributed on both sides of the switch electrical appliance (100) to be tested; each electrode assembly (1) includes a first drive mechanism (11), a second drive mechanism (12) and an electrode (13); The second driving mechanism (12) is connected to the output end of the first driving mechanism (11), and the electrode (13) is connected to the output end of the second driving mechanism (12); The second driving mechanism (12) is used to move along a first direction under the drive of the first driving mechanism (11) and drive the electrode (13) to be inserted into the terminal block (101) of the switch (100); the electrode (13) is used to move along a second direction under the drive of the second driving mechanism (12) and abut against the terminal block (101); wherein the first direction and the second direction are set at an angle. The adjustment mechanism (2) is connected to each of the second drive mechanisms (12) and is used to adjust the driving force of the second drive mechanism (12) to adjust the pressure applied by the electrode (13) to the terminal block (101).

2. The switching device testing apparatus according to claim 1, characterized in that, The electrode assembly (1) further includes a mounting base (14), a first drive frame (15), a connecting base (16), a second drive frame (17), and an electrode holder (18); The electrode (13) is disposed on the electrode holder (18), and the electrode holder (18) is connected to the output end of the second drive mechanism (12) through the second drive frame (17); the second drive mechanism (12) is connected to the output end of the first drive mechanism (11) through the first drive frame (15), and the first drive mechanism (11) is mounted on the mounting base (14); The connecting seat (16) is connected to the first drive frame (15), and the connecting seat (16) is slidably connected to the mounting seat (14) along the first direction; the electrode seat (18) is slidably connected to the connecting seat (16) along the second direction.

3. The switching device testing apparatus according to claim 2, characterized in that, The electrode assembly (1) further includes a first insulating plate (19), a second insulating plate (110), a first insulating fastener (120), and a second insulating fastener (130); The first insulating plate (19) is sandwiched between the first drive frame (15) and the connecting seat (16), and the first insulating fastener (120) passes through and connects the first drive frame (15) and the connecting seat (16); The second insulating plate (110) is sandwiched between the second drive frame (17) and the electrode seat (18), and the second insulating fastener (130) passes through and connects the second drive frame (17) and the electrode seat (18).

4. The switching device testing apparatus according to claim 2, characterized in that, The electrode holder (18) is provided with a wiring fastener (181), which is used to connect the lead wire. The terminal holder (101) is electrically connected to the lead wire through the electrode (13), the electrode holder (18) and the wiring fastener (181). The electrode (13) and the wiring fastener (181) are respectively disposed at both ends of the electrode seat (18) along the second direction, and the second drive frame (17) is located between the electrode (13) and the wiring fastener (181).

5. The switching device testing apparatus according to claim 2, characterized in that, The second drive mechanism (12) is located on one side of the electrode seat (18), and the electrode seat (18) is provided with a clearance notch (182) for avoiding the second drive mechanism (12).

6. The switching device testing apparatus according to claim 2, characterized in that, The switching device testing device also includes a base plate (3) and a protective cover (4), wherein the base plate (3) has a front side (31) and a back side (32) disposed opposite to each other; The front side (31) is provided with a test area (33) for placing a switch (100); both sides of the test area (33) are provided with through openings (34); the protective cover (4) is provided on the front side (31) and covers the through openings (34); the protective cover (4) has an opening facing the test area (33). The mounting base (14) is located on the back side (32), the first drive mechanism (11) is located on the side of the mounting base (14) facing away from the back side (32), one end of the electrode seat (18) and the electrode (13) pass through the through hole (34) and enter the protective cover (4), and the electrode (13) passes through the opening to be inserted into the terminal block (101).

7. The switching device testing apparatus according to claim 6, characterized in that, The electrode assembly (1) is provided in four parts, and the four electrode assemblies (1) are distributed in pairs on both sides of the test area (33); The two sets of electrode assemblies (1) are arranged in a mirror symmetrical manner; the two electrode assemblies (1) in each set are respectively located on both sides of the through opening (34) and are arranged in a mirror symmetrical manner.

8. The switching device testing apparatus according to claim 2, characterized in that, The first drive frame (15) includes a mounting plate (151) and a first boss (152) and a second boss (153) protruding from the mounting plate (151); the mounting plate (151) is provided with a first mounting groove (154) that engages with the output end of the first drive mechanism (11); a second mounting groove (155) is formed between the first boss (152) and the mounting plate (151), and the second mounting groove (155) engages with the connecting seat (16); a third mounting groove (156) is formed between the second boss (153) and the mounting plate (151), and the third mounting groove (156) engages with the second drive mechanism (12); And / or, the second drive frame (17) is provided with a fourth mounting groove (171) and a fifth mounting groove (172) distributed along the first direction, the fourth mounting groove (171) engaging with the output end of the second drive mechanism (12), and the fifth mounting groove (172) engaging with the electrode seat (18).

9. The switching device testing apparatus according to any one of claims 2-8, characterized in that, The electrode (13) is provided with a contact head (131) for abutting against the terminal block (101); the second drive mechanism (12) is provided with a drive rod (122) movable along the second direction, and the drive rod (122) is connected to the second drive frame (17). The distance between the center point of the contact head (131) and the central axis of the drive rod (122) in the first direction is less than a first distance threshold; The distance between the center point of the contact head (131) and the central axis of the drive rod (122) in the third direction is less than the second distance threshold; The first direction, the second direction, and the third direction are perpendicular to each other.

10. The switching device testing apparatus according to any one of claims 1-8, characterized in that, The second drive mechanism (12) includes a cylinder, and the adjustment mechanism (2) includes a pressure regulating valve. The inner cavity of the pressure regulating valve is connected to the inner cavity of the cylinder and is used to adjust the air pressure in the inner cavity of the cylinder.

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