A test mechanism suitable for switch cabinet handle

Abstract

The application belongs to the technical field of distribution switch, and particularly discloses a test mechanism suitable for a handle of a switch cabinet, which comprises a base plate, a plurality of support frames are fixedly connected to the upper end of the base plate, a support plate is fixedly connected to the upper end of the support frames, a transmission groove is formed in the upper end of the support plate, a rotating assembly for rotating the handle is arranged on the base plate and corresponds to the transmission groove, a detection assembly for detecting the insulation state of the rotating handle is arranged on the side of the support plate close to the rotating assembly, when the handle rotates with the second square rod, the first square rod, the transmission block and the trigger block are synchronously rotated, when the handle rotates to a key station such as an opening station or a closing station, the trigger block can instantaneously extrude the micro-touch switch, the power module and the resistance detector are started, the detection loop formed by the wires can accurately capture the change of the insulation resistance of the handle and the square rod connecting part under the mechanical friction and stress in the rotating process, the dynamic insulation data of the handle is captured, and the electrical property detection test of the handle is realized.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of power distribution switch, and particularly discloses a test mechanism suitable for a switch cabinet handle. BACKGROUND

[0002] The switch cabinet handle is a core component directly contacted by an operator, and is usually made of an insulating material such as epoxy resin, and the insulating performance thereof is directly related to the personal safety of the operation and maintenance personnel. One end of the handle is usually fixed with a square rod, and the other end is connected with an operating mechanism of a plastic circuit breaker, so that the rotating action of the handle can be accurately transmitted to the circuit breaker to drive the internal contact of the circuit breaker to close or open, thereby completing the on-off control of the power distribution circuit.

[0003] In the mechanical life test of the existing handle, the handle is connected with the driving assembly of the test mechanism through the square rod to simulate the rotating action of the handle driving the square rod and the operating mechanism of the circuit breaker under actual working conditions, and the mechanical resistance and transmission stability of the handle and the square rod are tested. In the insulating performance test, the surface insulating resistance of the handle is measured by an insulating detection device. However, this test ignores the real-time influence of dynamic factors such as mechanical friction and stress on the insulating performance during the rotation of the handle with the square rod. After long-term rotation of the handle, micro cracks may be generated in the insulating layer due to friction, or the insulating layer may be deteriorated due to repeated stress. The insulating change in such a dynamic process cannot be captured by independent mechanical test or static insulating test. SUMMARY

[0004] Therefore, the application aims to solve the problem that the insulating layer of the existing handle may be cracked due to friction or deteriorated due to repeated stress after long-term rotation, and the insulating change in the dynamic process cannot be captured by independent mechanical test or static insulating test.

[0005] To achieve the above objectives, the present invention provides a testing mechanism suitable for switch cabinet handles, comprising a base plate, a plurality of support frames fixedly connected to the upper end of the base plate, a support plate fixedly connected to the upper end of the support frames, a transmission groove formed on the upper end of the support plate, a rotating assembly for rotating the handle being provided on the base plate corresponding to the transmission groove, a detection assembly for detecting the insulation state of the rotating handle being provided on the side of the support plate near the rotating assembly, the rotating assembly including a cylinder fixedly mounted on the upper end of the base plate, an L-shaped plate fixedly mounted on the output end of the cylinder, two transmission plates fixedly connected to the upper end of the L-shaped plate, a pressing groove formed on the transmission plate, a pressing shaft slidably connected in the pressing groove, a transmission rod fixedly connected to the pressing shaft at the middle of the two transmission plates, two clamping plates fixedly connected to the support plate corresponding to the transmission groove, a first ring body slidably connected between the two clamping plates, the upper end of the transmission rod fixedly connected to the first ring body, a second ring body fixedly connected to the inner wall of the first ring body, and a protruding plate fixedly connected to one side of the second ring body.

[0006] In the above technical solution, preferably, two retaining shafts are slidably connected through one side of the convex plate, and a return spring is sleeved on one end of each retaining shaft that passes through the convex plate. The ends of the two retaining shafts with the return springs sleeved on them are fixedly connected to the adjusting plate.

[0007] In the above technical solution, preferably, a locking shaft is slidably connected through the middle of the adjusting plate, an adjusting knob is fixedly connected to one end of the locking shaft, and a semi-circular locking block is fixedly connected to the end of the locking shaft away from the adjusting knob. The convex plate has a semi-circular locking groove corresponding to the locking shaft and the semi-circular locking block.

[0008] In the above technical solution, preferably, the detection component includes a bearing fixedly installed on one side of the support plate, a first square rod fixedly installed in the hollow part of the bearing, a transmission block fixedly connected to the side of the first square rod near the support plate, and two trigger protrusions fixedly connected to the outer wall of the transmission block.

[0009] In the above technical solution, preferably, a power module is fixedly installed on the support plate corresponding to the transmission block, a micro-touch switch is fixedly installed on the power module corresponding to the trigger protrusion, and a first wire is connected between the power module and the first square rod.

[0010] In the above technical solution, preferably, a round rod is fixedly connected to the side of the first square rod near the transmission block, a sleeve is sleeved on the outer wall of the round rod, and a second wire is connected to the lower end of the sleeve.

[0011] In the above technical scheme, preferably, the substrate is fixedly installed with a resistance detector at the lower end of the first wire, the second wire is in communication with the resistance detector, the second square rod is fixedly connected with a second square rod at the end away from the circular rod, the second square rod is fixedly connected with a connecting protrusion at both sides of the end away from the circular rod, and the support plate is fixedly installed with a protection bin corresponding to the first square rod and the second square rod.

[0012] In the above technical scheme, preferably, the support plate is fixedly connected with a single screw rod at the side close to the bearing, a pressing plate is slidingly connected at the middle of the single screw rod, and a friction block is fixedly connected with the pressing plate at the end away from the single screw rod.

[0013] In the above technical scheme, preferably, the single screw rod is sleeved with a resistance spring at the side close to the pressing plate, and an adjusting nut is threadedly connected with the single screw rod at the side close to the resistance spring.

[0014] Compared with the prior art, the present application has the following beneficial effects: (1) when the handle rotates with the second square rod, the first square rod, the transmission block and the trigger protrusion are synchronously rotated, when rotating to the key working positions such as opening and closing, the trigger protrusion can immediately extrude the micro touch switch, the power module and the resistance detector are started, the detection loop formed by the wires is used to accurately capture the change of the insulation resistance of the handle and the square rod connection part under the mechanical friction and stress in the rotation process, the dynamic insulation data of the handle is captured, and the electrical property test of the handle is realized.

[0015] (2) the handle clamping structure is optimized by the cooperation of the lock shaft, the semicircular lock block and the reset spring, the handle positioning and fixing can be quickly completed only by simple operation, the coaxiality of the handle, the square rod and the ring body is ensured, the influence of the rotation deviation on the detection result is reduced, the rotation resistance can be flexibly adjusted by the combination design of the single screw rod, the resistance spring and the friction block, the actual operation condition is accurately simulated, and the test authenticity is improved. In addition, the mechanical and insulation comprehensive test can be completed without disassembling and docking, the test process is greatly shortened, and the test efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure front view of the present application.

[0017] Figure 2 It is the local structure section view of the present application.

[0018] Figure 3 It is the A area structure enlarged view of the present application. Figure 2

[0019] Figure 4 It is the local structure schematic view of the present application.

[0020] Figure 5 ​A sectional view of the protective chamber structure of the present application.

[0021] Figure 6 A side view of the overall structure of the present application.

[0022] Figure 7 An enlarged view of the area structure at B of the present application. Figure 6

[0023] In the figure: 1, base plate; 2, support frame; 3, support plate; 4, transmission groove; 5, air cylinder; 6, L-shaped plate; 7, transmission plate; 8, extrusion groove; 9, extrusion shaft; 10, transmission rod; 11, clamping plate; 12, first ring body; 13, second ring body; 14, convex plate; 15, clamping shaft; 16, return spring; 17, adjusting plate; 18, locking shaft; 19, adjusting knob; 20, semicircular locking block; 21, semicircular locking groove; 22, bearing; 23, first square rod; 24, transmission block; 25, trigger protrusion; 26, power module; 27, micro-touch switch; 28, first wire; 29, round rod; 30, sleeve; 31, second wire; 32, resistance detector; 33, second square rod; 34, connecting protrusion; 35, protective chamber; 36, single-threaded rod; 37, extrusion plate; 38, friction block; 39, resistance spring; 40, adjusting nut. DETAILED DESCRIPTION

[0024] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the present application is not limited to the specific embodiments disclosed below.

[0026] As Figures 1-7 ​The utility model provides an experimental mechanism for switch cabinet handle, including base plate 1, a plurality of support frame 2 are fixedly connected to base plate 1 upper end, support plate 3 is fixedly connected to support frame 2 upper end, and the transmission groove 4 is seted up in support plate 3 upper end, and the rotary assembly for rotating handle is provided with base plate 1 corresponding transmission groove 4, and the detection assembly for detecting the insulating state of rotating handle is arranged on the side of support plate 3 close to rotary assembly, and rotary assembly includes the cylinder 5 of fixed mounting on base plate 1 upper end, and the L-shaped plate 6 is fixedly installed in cylinder 5 output end, and two transmission plates 7 are fixedly connected to L-shaped plate 6 upper end, and the extrusion groove 8 is seted up in transmission plate 7, and the extrusion shaft 9 is slidably connected in extrusion groove 8, and the transmission rod 10 is fixedly connected to extrusion shaft 9 corresponding two transmission plate 7 middle, and two clamping plates 11 are fixedly connected to support plate 3 corresponding transmission groove 4, and the first ring body 12 is slidably connected between two clamping plates 11, and the transmission rod 10 upper end is fixedly connected with the first ring body 12, and the second ring body 13 is fixedly connected to the inner wall of first ring body 12, and the lug plate 14 is fixedly connected to one side of second ring body 13, and two clamping shafts 15 are slidably connected on one side of lug plate 14, and the reset spring 16 is seted up on the end of two clamping shafts 15 through lug plate 14, and the adjusting plate 17 is fixedly connected to the end of two clamping shafts 15 seted up reset spring 16, and the lock shaft 18 is slidably connected in the middle of adjusting plate 17, and the adjusting knob 19 is fixedly connected to one end of lock shaft 18, and the semicircular lock block 20 is fixedly connected to the end of lock shaft 18 away from adjusting knob 19, and the semicircular lock groove 21 is seted up in lug plate 14 corresponding lock shaft 18, semicircular lock block 20, the detection assembly includes the bearing 22 of fixed mounting on the side of support plate 3, and the first square rod 23 is fixedly installed in the hollow portion of bearing 22, and the transmission block 24 is fixedly connected to the side of first square rod 23 close to support plate 3, and two trigger lugs 25 are fixedly connected to the outer wall of transmission block 24, and the power module 26 is fixedly installed on support plate 3 corresponding transmission block 24, and the micro touch switch 27 is fixedly installed in power module 26 corresponding trigger lug 25, and the first lead 28 is communicated between power module 26 and first square rod 23, and the round rod 29 is fixedly connected to the side of first square rod 23 close to transmission block 24, and the sleeve 30 is seted up on the outer wall of round rod 29, and the second lead 31 is connected to the lower end of sleeve 30, and the resistance detector 32 is fixedly installed on base plate 1 corresponding first lead 28 lower end, and the second lead 31 is communicated with resistance detector 32, and the second square rod 33 is fixedly connected to the end of round rod 29 away from first square rod 23, and the connecting lug 34 is fixedly connected to the end of second square rod 33 away from round rod 29 on both sides, and the protective bin 35 is fixedly installed on support plate 3 corresponding first square rod 23, second square rod 33, and the single screw rod 36 is fixedly connected to the side of support plate 3 close to bearing 22, and the extrusion plate 37 is slidably connected in the middle of single screw rod 36, and the friction block 38 is fixedly connected to the end of extrusion plate 37 away from single screw rod 36, and the resistance spring 39 is seted up on the side of single screw rod 36 close to extrusion plate 37, and the adjusting nut 40 is threadedly connected to the side of single screw rod 36 close to resistance spring 39.

[0027] Working principle: before use, first install the switch cabinet handle to be detected on the second square rod 33, make the mounting hole of the handle align with the connecting lugs 34 on both sides of the second square rod 33 away from the one end of the round rod 29, cover the handle on the second square rod 33 and fit with the connecting lugs 34, complete the preliminary installation of the handle; wherein, through the cooperation of the handle mounting hole and the second square rod 33 and the connecting lugs 34, the preliminary positioning of the handle and the second square rod 33 is realized, which provides the basis for the stable clamping and rotation of the handle in the subsequent stage, and avoids the misplacement of the handle in the installation stage.

[0028] Then, push the adjusting knob 19 with hand, the adjusting knob 19 drives the lock shaft 18 to move towards the direction close to the lug 14, when the lock shaft 18 fits with the adjusting plate 17, the adjusting knob 19 extrudes the adjusting plate 17, the adjusting plate 17 in turn drives the clamping shaft 15 at both ends to slide towards the direction close to the lug 14, at this time, the reset spring 16 sleeved on the clamping shaft 15 is compressed; with the movement of the lock shaft 18, the semicircular lock block 20 away from the one end of the lock shaft 18 gradually approaches the semicircular lock slot 21 on the lug 14, until the semicircular lock block 20 completely enters the semicircular lock slot 21; then rotate the adjusting knob 19, the adjusting knob 19 drives the lock shaft 18 and the semicircular lock block 20 to rotate synchronously, so that the semicircular lock block 20 and the clamping groove structure of the semicircular lock slot 21 are clamped with each other; loosen the adjusting knob 19, the reset spring 16 releases the elastic potential energy, pushes the adjusting plate 17 and the clamping shaft 15 to move reversely to reset, at this time, the position of the clamping shaft 15 is fixed, the clamping shaft 15 forms a lateral clamping force on the lug 14, and in turn stably clamps the handle linked with the lug 14, the second ring body 13 and the first ring body 12, so as to avoid the deviation of the handle in the subsequent rotation process; wherein, through the clamping cooperation of the adjusting knob 19, the lock shaft 18, the semicircular lock block 20 and the semicircular lock slot 21, combined with the elastic reset action of the reset spring 16, the position fixation and clamping force adjustment of the clamping shaft 15 are realized, which ensures the stable linkage of the handle and the first ring body 12 and the second ring body 13, and provides protection for the accurate rotation of the handle in the subsequent stage.

[0029] The output end of the cylinder 5 is extended and drives the L-shaped plate 6 to move towards the first ring body 12, the L-shaped plate 6 drives the two transmission plates 7 fixed at the upper end to move synchronously, when the extrusion groove 8 provided on the transmission plate 7 moves, the groove wall of the extrusion groove 8 generates an extrusion force on the extrusion shaft 9 connected in the extrusion groove 8; under the extrusion force, the extrusion shaft 9 slides along the track of the extrusion groove 8 and drives the transmission rod 10 fixed in the middle to move synchronously, the upper end of the transmission rod 10 is fixedly connected with the first ring body 12, thereby driving the first ring body 12 to rotate along the sliding track between the two clamping plates 11, the first ring body 12 drives the second ring body 13 fixed on the inner wall to rotate synchronously, the second ring body 13 drives the handle to rotate around the axis thereof through the clamping cooperation of the convex plate 14, the clamping shaft 15 and the handle, so as to realize the opening and closing rotation action of the handle in the actual use process of the switch cabinet, and provide a mechanical action basis for subsequent electrical performance detection; wherein, through the power provided by the cylinder 5, the linear motion is converted into the rotary motion of the first ring body 12 through the transmission cooperation of the L-shaped plate 6, the transmission plate 7, the extrusion groove 8 and the extrusion shaft 9, the clamping plate 11 provides guidance and limiting for the rotation of the first ring body 12, so as to ensure that the handle rotation track conforms to the actual working condition, and to create conditions for accurate triggering of electrical performance detection.

[0030] When the handle rotates, the second square rod 33 fixed therewith rotates synchronously, the second square rod 33 drives the circular rod 29 fixed at one end to rotate, the circular rod 29 drives the first square rod 23 fixed at one end away from the second square rod 33 to rotate, and the first square rod 23 rotates stably under the support of the bearing 22; the first square rod 23 drives the transmission block 24 fixed on the side close to the bearing 22 to rotate, and the transmission block 24 drives the two trigger protrusions 25 fixed on the outer wall to rotate synchronously; when the trigger protrusions 25 rotate to contact the micro touch switch 27, the trigger protrusions 25 generate an extrusion force on the micro touch switch 27, and the micro touch switch 27 sends a start signal to the power supply module 26 after being triggered; the power supply module 26 starts and releases the detection required current after receiving the signal, the current is transmitted to the first square rod 23 through the first wire 28, and is conducted to the handle through the first square rod 23, the circular rod 29 and the second square rod 33; the current is further conducted to the sleeve 30 sleeved on the outer wall of the circular rod 29 from the handle, and is transmitted to the resistance detector 32 through the second wire 31 connected to the lower end of the sleeve 30; after receiving the current signal, the resistance detector 32 detects and analyzes the resistance value in the current transmission process in real time, so as to judge the electrical performance parameters such as the insulation state and the electrical conductivity when the handle rotates to the current station, and to realize the cooperation of the handle mechanical rotary action and the electrical performance detection; wherein, through the linkage of the handle, the second square rod 33, the circular rod 29 and the first square rod 23, the trigger protrusions 25 and the micro touch switch 27 are accurately contacted, the power supply module 26 is started synchronously, the current forms a complete detection loop through the first wire 28 and the second wire 31, and the resistance detector 32 analyzes the electrical performance of the handle through the current signal, so as to ensure the synchronism of the mechanical action and the electrical measurement and the data accuracy.

[0031] If the rotation resistance in the actual operation of the handle needs to be simulated, the adjusting nut 40 on the single-threaded rod 36 is rotated, and when the adjusting nut 40 moves along the threaded track of the single-threaded rod 36, the compression or release of the resistance spring 39 is generated; the elastic force change of the resistance spring 39 drives the extrusion plate 37 to slide along the single-threaded rod 36, and the extrusion plate 37 drives the friction block 38 away from one end of the single-threaded rod 36 to move towards the first square rod 23 or the circular rod 29, until the friction block 38 contacts the outer wall of the first square rod 23 or the circular rod 29 and generates friction resistance; the size of the friction resistance can be controlled by adjusting the adjusting nut 40, so that the rotation resistance of the handle meets the actual demand under different working conditions, and ensures that the test data is more realistic; at the same time, the protective bin 35 can prevent the first square rod 23, the second square rod 33 and other detection components from being affected by the external environment, so as to avoid the influence of the external environment on the detection accuracy; wherein, by adjusting the adjusting nut 40, the resistance spring 39 and the extrusion plate 37, the contact pressure of the friction block 38 and the first square rod 23 or the circular rod 29 is adjusted, and then the rotation resistance is controlled to simulate the actual operation.

[0032] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A test mechanism for a switch cabinet handle, comprising a base plate (1), wherein a plurality of support frames (2) are fixedly connected to the upper end of the base plate (1), and a support plate (3) is fixedly connected to the upper end of the support frames (2), characterized in that, The upper end of the support plate (3) is provided with a transmission groove (4). The base plate (1) is provided with a rotating assembly for rotating the handle corresponding to the transmission groove (4). The support plate (3) is provided with a detection assembly for detecting the insulation status of the rotating handle on the side near the rotating assembly. The rotating assembly includes a cylinder (5) fixedly installed on the upper end of the base plate (1). An L-shaped plate (6) is fixedly installed on the output end of the cylinder (5). Two transmission plates (7) are fixedly connected to the upper end of the L-shaped plate (6). An extrusion groove (8) is provided on the transmission plate (7). An extrusion shaft (9) is slidably connected inside the pressure groove (8). A transmission rod (10) is fixedly connected to the middle of the two transmission plates (7) corresponding to the extrusion shaft (9). Two clamping plates (11) are fixedly connected to the support plate (3) corresponding to the transmission groove (4). A first ring body (12) is slidably connected between the two clamping plates (11). The upper end of the transmission rod (10) is fixedly connected to the first ring body (12). A second ring body (13) is fixedly connected to the inner wall of the first ring body (12). A protruding plate (14) is fixedly connected to one side of the second ring body (13). The detection assembly includes a bearing (22) fixedly installed on one side of the support plate (3), a first square rod (23) fixedly installed in the hollow part of the bearing (22), a transmission block (24) fixedly connected to the side of the first square rod (23) near the support plate (3), and two trigger protrusions (25) fixedly connected to the outer wall of the transmission block (24). The support plate (3) is fixedly installed with a power module (26) corresponding to the transmission block (24). The power module (26) is fixedly installed with a micro-touch switch (27) corresponding to the trigger protrusion (25). The power module (26) is connected to the first square rod (23) by a first wire (28).

2. The testing mechanism for switch cabinet handles according to claim 1, characterized in that, Two retaining pins (15) are slidably connected through one side of the convex plate (14). Each of the two retaining pins (15) is fitted with a return spring (16) at one end of the convex plate (14). The ends of the two retaining pins (15) fitted with the return springs (16) are fixedly connected to the adjusting plate (17).

3. The testing mechanism for switch cabinet handles according to claim 2, characterized in that, A locking shaft (18) is slidably connected through the middle of the adjusting plate (17). An adjusting knob (19) is fixedly connected to one end of the locking shaft (18). A semi-circular locking block (20) is fixedly connected to the end of the locking shaft (18) away from the adjusting knob (19). A semi-circular locking groove (21) is opened on the convex plate (14) corresponding to the locking shaft (18) and the semi-circular locking block (20).

4. The testing mechanism for switch cabinet handles according to claim 1, characterized in that, The first square rod (23) is fixedly connected to a round rod (29) on the side near the transmission block (24). A sleeve (30) is fitted on the outer wall of the round rod (29), and a second wire (31) is connected to the lower end of the sleeve (30).

5. A testing mechanism suitable for switch cabinet handles according to claim 4, characterized in that, A resistance detector (32) is fixedly installed on the substrate (1) at the lower end of the first conductor (28). The second conductor (31) is connected to the resistance detector (32). A second square rod (33) is fixedly connected to the end of the round rod (29) away from the first square rod (23). Connecting protrusions (34) are fixedly connected to both sides of the end of the second square rod (33) away from the round rod (29). A protective chamber (35) is fixedly installed on the support plate (3) corresponding to the first square rod (23) and the second square rod (33).

6. The testing mechanism for switch cabinet handles according to claim 5, characterized in that, The support plate (3) is fixedly connected to a single threaded rod (36) on the side near the bearing (22). A pressing plate (37) is slidably connected in the middle of the single threaded rod (36). A friction block (38) is fixedly connected to the end of the pressing plate (37) away from the single threaded rod (36).

7. A testing mechanism suitable for switch cabinet handles according to claim 6, characterized in that, The single-threaded rod (36) is fitted with a resistance spring (39) on the side near the extrusion plate (37), and an adjusting nut (40) is threadedly connected to the side of the single-threaded rod (36) near the resistance spring (39).

Images