A wall plug socket security testing device

Abstract

This utility model discloses a wall-mounted socket stability testing device, including a workbench, a gantry bracket, a guide wheel bracket, a fixed pulley assembly, a tension line, a gravity block, a guide shaft, a cylinder assembly, an electromagnet, a cylinder connecting plate, a limiting assembly, a product fixing plate, and an electrical control system. The fixed pulley assembly includes at least a first fixed pulley located in a vertical groove on the gantry bracket, a fourth fixed pulley on the crossbeam of the gantry bracket, and a second and third fixed pulleys on the guide wheel bracket. One end of the tension line is connected to the test sample, and the other end passes through the four fixed pulleys in sequence before connecting to the gravity block. The guide shaft passes through the guide hole of the gravity block. The cylinder connecting plate is connected to the output shaft of the lifting cylinder, and the electromagnet is fixed to the bottom of the cylinder connecting plate. The electrical control system includes a display screen and a PLC control cabinet. This utility model simulates the stability of a wall-mounted socket under repeated tension or static load after installation, enabling automated and efficient testing with high accuracy and low cost.

Description

Technical Field

[0001] This utility model relates to the technical field of a wall-mounted socket stability testing device. Background Technology

[0002] In the existing technology, wall-mounted sockets need to be fixed to the wall, and their installation firmness (such as the tensile strength of screw holes and the connection strength between the panel and the back box) directly affects the safety of use.

[0003] Traditional testing has the following drawbacks: ① It artificially simulates the suspension of heavy objects, making it impossible to accurately control the number of tension cycles (such as simulating the tension caused by users repeatedly plugging and unplugging electrical appliances); ② It lacks a fixed structure that simulates wall support, resulting in a large deviation between the stress state of the socket during testing and the actual installation scenario (such as a soft mounting plate leading to overly optimistic test results); ③ It cannot detect hidden failures (such as loose screws that are not broken but no longer meet safety standards).

[0004] Therefore, there is an urgent need for a robustness testing device specifically designed for the installation characteristics of wall-mounted sockets. This device can simulate the robustness of wall-mounted sockets under repeated tensile forces or static loads after installation, and verify the fatigue resistance of their mounting parts and panel connection structures. Utility Model Content

[0005] The purpose of this invention is to provide a wall-mounted socket stability testing device to solve the problems of inaccurate scenario simulation, poor cycle control, and poor reproducibility of test results in existing wall-mounted socket stability testing after installation.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A wall-mounted socket stability testing device includes a workbench, a gantry bracket, a guide wheel bracket, a fixed pulley assembly, a tension line, a gravity block, a guide shaft, a cylinder assembly, an electromagnet, a cylinder connecting plate, a limit assembly, a product fixing plate, and an electrical control system.

[0008] The gantry support is mounted on the workbench, and the guide wheel support is mounted on the gantry support; the product fixing plate is mounted on the workbench for mounting test samples.

[0009] The fixed pulley assembly includes at least four fixed pulleys, namely a first fixed pulley, a second fixed pulley, a third fixed pulley and a fourth fixed pulley. The first fixed pulley is located in a vertical groove on the gantry support, the fourth fixed pulley is located on the crossbeam of the gantry support, and the second and third fixed pulleys are located on the guide wheel support.

[0010] One end of the tension line is connected to the test end of the test sample, and the other end passes through the first fixed pulley, the second fixed pulley, the third fixed pulley, and the fourth fixed pulley in sequence before being connected to the gravity block;

[0011] The guide shaft is vertically mounted on the worktable, and a guide hole adapted to the guide shaft is opened at the bottom of the gravity block. The guide shaft passes through the guide hole to limit the displacement of the gravity block.

[0012] The cylinder assembly includes a cylinder frame and a lifting cylinder. The cylinder frame is fixedly connected to the worktable, and the lifting cylinder is mounted on the cylinder frame. The cylinder connecting plate is connected to the output shaft of the lifting cylinder, and the electromagnet is fixedly connected to the bottom of the cylinder connecting plate.

[0013] The limiting component includes two upper limit positions and two lower limit positions, all of which are mounted on the cylinder frame and are used to limit the maximum lifting height and maximum lowering amplitude of the lifting cylinder, respectively.

[0014] The electrical control system includes a display screen and a PLC control cabinet, used to set the number of cyclic tests and action delay parameters.

[0015] Furthermore, the vertical sliding groove on the gantry support is a T-shaped sliding groove with a width of 10-20mm and a depth of 15-25mm, used to adjust the position of the first fixed pulley.

[0016] Furthermore, the fourth fixed pulley is located at the end of the crossbeam of the gantry bracket, and the grooves of the four fixed pulleys are in the same vertical plane.

[0017] Furthermore, the tension wire is made of nylon with a diameter of 1.5-2.5mm and a breaking strength of ≥500N.

[0018] Furthermore, the gravity blocks are multiple standard cast iron blocks ranging from 0.5kg to 5kg, and different weight configurations can be changed according to testing needs.

[0019] Furthermore, the clearance between the guide shaft and the guide hole of the gravity block is 0.05-0.2mm; even further, the guide shaft is made of 45# steel.

[0020] The test sample is a wall-mounted socket, and the test end is the socket's mounting and fixing part (such as screw holes, snap-fit ​​structure) or the supporting panel. The product mounting plate is provided with mounting holes (hole spacing 60mm / 100mm) adapted to 86-type and 118-type wall-mounted sockets, and expansion screws are used to simulate the actual wall fixing method; furthermore, the product mounting plate is made of 1.5mm thick cold-rolled steel plate.

[0021] The aforementioned switch testing device can be set up with multiple stations to test multiple samples in parallel. The gantry bracket, guide wheel bracket, fixed pulley assembly, tension line, gravity block, guide shaft, cylinder assembly, electromagnet, cylinder connecting plate and limit assembly are configured in groups, and multiple mounting holes are provided on the product fixing plate.

[0022] The beneficial effects of this utility model are:

[0023] The wall-mounted socket stability testing device provided by this utility model simulates the stability of a wall-mounted socket under repeated tensile forces or static loads after installation. Compared with the prior art, it has the following significant advantages:

[0024] 1. Automated and efficient testing: In automatic mode, no manual intervention is required, and a single test (e.g., 5000 cycles) takes ≤1.5 hours, greatly improving testing efficiency and reducing the error rate of the number of cycles;

[0025] 2. High-precision stability test: The cooperation between the guide shaft and the gravity block has a tension direction offset angle ≤0.5°, a tension loss of the fixed pulley assembly ≤1%, and a repeatability error of the test results ≤2%;

[0026] 3. High reliability of test results: It can simulate the actual wall support strength, and the test results are highly consistent with the actual installation scenario;

[0027] 4. High compatibility: Compatible with mainstream wall-mounted socket models, eliminating the need for frequent clamp changes and improving testing efficiency;

[0028] 5. Low data failure rate: PLC electrical control can detect hidden failures such as loose screws (by monitoring the attenuation of tensile force), avoiding the limitation of traditional testing that only focuses on breakage;

[0029] 6. Significantly reduced costs: Multiple workstations can be tested simultaneously by a single person, which not only saves labor costs but also reduces equipment and site costs.

[0030] The technical solution of this utility model will be illustrated below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the front main structure of the wall-mounted socket firmness testing device provided in this embodiment of the utility model.

[0032] Figure 2 This is a side view of the main structure of the wall-mounted socket stability testing device provided in this embodiment of the utility model.

[0033] Figure 3 This is a side view of the wall-mounted socket stability testing device provided in this embodiment of the utility model after the door is closed.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Workbench, 2. Gantry support, 3. Guide wheel support, 4. First fixed pulley

[0036] 5 Second fixed pulley, 6 Third fixed pulley, 7 Fourth fixed pulley, 8 Tension line, 9 Test sample

[0037] 10. Gravity block, 11. Guide shaft, 12. Electromagnet, 13. Cylinder connecting plate

[0038] (14, 15) Two upper limits; (16, 17) Two lower limits.

[0039] 18 Lifting cylinder, 19 Product mounting plate, 20 Cylinder bracket, 21 Display screen, 22 PLC control cabinet Detailed Implementation

[0040] The specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the disclosed technical solutions. It should also be noted that, for ease of description, the accompanying drawings show only the parts relevant to the technical solutions of this application, not the entire structure.

[0041] Before discussing the exemplary embodiments in more detail, it should be mentioned that the structure of the device components and / or modules mentioned in the embodiments, unless otherwise described in detail, is something that can be understood by those skilled in the art based on existing public technologies or is a commercially available product.

[0042] refer to Figure 1-3The wall-mounted socket stability testing device provided in this embodiment includes a workbench 1, a gantry bracket 2, a guide wheel bracket 3, a fixed pulley assembly, a tension line 8, a gravity block 10, a guide shaft 11, a cylinder assembly, an electromagnet 12, a cylinder connecting plate 13, a limit assembly, a product fixing plate 19, and an electrical control system. The gantry bracket 2 is mounted on the workbench 1, and the guide wheel bracket 3 is mounted on the gantry bracket 2. The product fixing plate 19 is mounted on the workbench 1 and is used to mount the test sample 9. The fixed pulley assembly includes at least four fixed pulleys, namely a first fixed pulley 4, a second fixed pulley 5, a third fixed pulley 6, and a fourth fixed pulley 7. The first fixed pulley 4 is located in a vertical groove on the gantry bracket 2, the fourth fixed pulley 7 is located on the crossbeam of the gantry bracket 2, and the second fixed pulley 5 and the third fixed pulley 6 are located on the guide wheel bracket 3. One end of the tension line 8 is connected to the test end of the test sample 9, and the other end passes around the first fixed pulley 9 in sequence. Fixed pulley 4, second fixed pulley 5, third fixed pulley 6, and fourth fixed pulley 7 are connected to gravity block 10. The guide shaft 11 is vertically mounted on the workbench 1. The bottom of gravity block 10 has a guide hole adapted to the guide shaft 11, and the guide shaft 11 passes through the guide hole to limit the offset of gravity block 10. The cylinder assembly includes a cylinder frame 20 and a lifting cylinder 18. The cylinder frame 20 is fixed to the workbench 1, and the lifting cylinder 18 is mounted on the cylinder frame 20. The cylinder connecting plate 13 is connected to the output shaft of the lifting cylinder 18, and the electromagnet 12 is fixed to the bottom of the cylinder connecting plate 13. The limiting assembly includes two upper limit positions (14, 15) and two lower limit positions (16, 17), all mounted on the cylinder frame 20, which are used to limit the maximum lifting height and maximum descent amplitude of the lifting cylinder 18, respectively. The electrical control system includes a display screen 21 and a PLC control cabinet 22, which are used to set the number of cycle tests and action delay parameters.

[0043] Workbench 1 provides a stable mounting base for other components.

[0044] The gantry support 2 can be made of aluminum alloy profiles and fixed to the four corners of the workbench 1 with M8 bolts. T-shaped slides with a width of 10-20mm and a depth of 15-25mm are opened on the vertical plate to adjust the position of the first fixed pulley 4 to adapt to the stretching requirements of different lengths and angles.

[0045] The fourth fixed pulley 7 is preferably located at the end of the crossbeam of the gantry bracket 2, and the grooves of the four fixed pulleys are in the same vertical plane to ensure that the tension line 8 moves smoothly and the tension loss is ≤1%.

[0046] The tension wire 8 is preferably made of nylon with a diameter of 1.5-2.5mm and a breaking strength of ≥500N.

[0047] The gravity block 10 can be configured with multiple standard cast iron blocks ranging from 0.5kg to 5kg, and different weight configurations can be changed according to testing needs. The clearance between the guide shaft 11 and the guide hole of the gravity block 10 is controlled within 0.05-0.2mm to ensure that the gravity block 10 rises and falls vertically with an offset angle ≤0.5°. Preferably, the guide shaft 11 is made of 45# steel.

[0048] Furthermore, a tension sensor can be installed at the end of the tension line. If the tension value drops by ≥10% in a certain cycle, it can be determined that the screw is loose and the equipment will alarm, which can detect the hidden failure of the wall-mounted socket.

[0049] Test sample 9 is a wall-mounted socket, and the test end is the socket's mounting and fixing part (such as screw holes, snap-fit ​​structure) or the supporting panel. The upper surface of the product fixing plate 19 is provided with mounting holes (hole spacing 60mm / 100mm) adapted to commonly used 86-type and 118-type wall-mounted sockets, and expansion screws are used to simulate the actual wall fixing method. Preferably, the product fixing plate 19 is made of 1.5mm thick cold-rolled steel plate to simulate the strength of the wall.

[0050] The lifting cylinder 18 can be an SC63×50 piston rod type cylinder, which is fixed to the aluminum alloy cylinder frame 20. The cylinder connecting plate 13 connects the cylinder output shaft end to the electromagnet 12 to realize the adsorption and release of the gravity block 10.

[0051] The limit component consists of two sets of limits, two upper limits and two lower limits (such as the LX19-001 limit switch), which are fixed to the cylinder frame 20 to precisely control the cylinder lifting position.

[0052] The aforementioned switch testing device can be set up with multiple stations to test multiple samples in parallel. The gantry bracket 2, guide wheel bracket 3, fixed pulley assembly, tension line 8, gravity block 10, guide shaft 11, cylinder assembly, electromagnet 12, cylinder connecting plate 13 and limit assembly are configured as a group, and multiple mounting holes are set on the product fixing plate 19 at the corresponding positions.

[0053] The electronic control system can be configured with manual and automatic modes, and can set the number of test cycles and action delay parameters, and has a reset function. During operation, the gravity block 10 is suspended to apply tension to the test sample 9. After a preset suspension time, the lifting cylinder 18 drives the electromagnet 12 to descend and attract the gravity block 10, and then lifts it to the upper limit position (14, 15) to release it, so that the test sample 9 is alternately subjected to force and not subjected to force. The above process is repeated for a preset number of cycles to complete the test.

[0054] The motion delay parameters include cylinder adsorption delay and gravity block drop delay, with the cylinder adsorption delay controlled between 0.2-1S and the gravity block drop delay controlled between 0.05-0.2S.

[0055] The number of loop tests can be set from 1 to 10,000. The display shows the current number of loops in real time, and the current number of loops can be reset.

[0056] The electronic control system can also be equipped with an alarm module: when the test is qualified, the display screen will light up green; when the test is abnormal (such as the cylinder not being in place or the sample being damaged), the display screen will light up red and a buzzer alarm will be triggered.

[0057] When using the testing device of this patent embodiment, the process is as follows:

[0058] 1. Preparation before testing

[0059] Connect the power supply (220V AC), turn on the main circuit breaker, and the display screen will start;

[0060] Open the cylinder and adjust the pressure to 0.6 MPa;

[0061] Install the 86-type wall-mounted single-phase socket (with protective door, mounting hole spacing 60mm): Fix the socket base box to the simulated wall structure of the product mounting plate with M4 screws. After the panel is snapped on, the pull line is connected to the middle of the panel (simulating the user pulling the electrical cord on the socket).

[0062] Connect the tension line: After passing the other end over four fixed pulleys, tie it to the weight block;

[0063] Manual adjustment: Operate the buttons on the display screen to control the cylinder to descend / ascend and the electromagnet to engage / release, and confirm that the movement of each component is smooth and that the upper / lower limit triggers are normal.

[0064] 2. Parameter setting and automatic testing

[0065] The number of cycles is set to 3000, and the gravity block is selected as 2kg (to simulate the weight of everyday electrical appliances).

[0066] Confirmation of action delay: cylinder adsorption delay 0.4S, gravity block drop delay 0.1S;

[0067] Switch to automatic mode and start the device to enter automatic testing:

[0068] ① Suspend the socket terminal with a gravity block and apply a 2kg pulling force for 4 seconds;

[0069] ② The lifting cylinder drives the electromagnet to descend to the lower limit, and the electromagnet is energized to attract the gravity block;

[0070] ② When the cylinder is raised to the lower limit, the electromagnet is de-energized and the gravity block is released, completing one cycle;

[0071] ③ The display screen updates the current loop count in real time (e.g., 1 / 3000, 2 / 3000, etc.), and repeats the above steps up to 3000 times.

[0072] 3. Test Results and Follow-up Operations

[0073] Test completed: No abnormalities such as detached terminals or cracked casing were found in the socket sample, and the equipment automatically stopped.

[0074] If the tension value drops by ≥10% during a cycle, it is determined that the screw is loose and the equipment will alarm.

[0075] Reset and removal: After resetting the equipment, remove the test sample, replace it with a new sample, and repeat the above steps.

Claims

1. A device for testing the firmness of a wall-mounted socket, characterized in that: It includes a workbench (1), a gantry support (2), a guide wheel support (3), a fixed pulley assembly, a tension line (8), a gravity block (10), a guide shaft (11), a cylinder assembly, an electromagnet (12), a cylinder connecting plate (13), a limit assembly, a product fixing plate (19), and an electrical control system; The gantry bracket (2) is set on the workbench (1), and the guide wheel bracket (3) is set on the gantry bracket (2); the product fixing plate (19) is set on the workbench (1) and is used to install the test sample (9). The fixed pulley assembly includes at least four fixed pulleys, namely a first fixed pulley (4), a second fixed pulley (5), a third fixed pulley (6) and a fourth fixed pulley (7). The first fixed pulley (4) is located in a vertical groove on the gantry support (2), the fourth fixed pulley (7) is located on the crossbeam of the gantry support (2), and the second fixed pulley (5) and the third fixed pulley (6) are located on the guide wheel support (3). One end of the tension line (8) is connected to the test end of the test sample (9), and the other end passes through the first fixed pulley (4), the second fixed pulley (5), the third fixed pulley (6), and the fourth fixed pulley (7) in sequence before being connected to the gravity block (10); The guide shaft (11) is vertically mounted on the workbench (1), and the bottom of the gravity block (10) is provided with a guide hole that is compatible with the guide shaft (11). The guide shaft (11) passes through the guide hole to limit the offset of the gravity block (10). The cylinder assembly includes a cylinder frame (20) and a lifting cylinder (18). The cylinder frame (20) is fixed to the worktable (1), and the lifting cylinder (18) is mounted on the cylinder frame (20). The cylinder connecting plate (13) is connected to the output shaft of the lifting cylinder (18), and the electromagnet (12) is fixed to the bottom of the cylinder connecting plate (13). The limiting components include two upper limit positions (14, 15) and two lower limit positions (16, 17), all of which are provided on the cylinder frame (20) and are used to limit the maximum lifting height and maximum lowering amplitude of the lifting cylinder (18), respectively. The electrical control system includes a display screen (21) and a PLC control cabinet (22) to set the number of cyclic tests and action delay parameters.

2. The wall-mounted socket firmness testing device as described in claim 1, characterized in that: The vertical groove on the gantry bracket (2) is a T-shaped groove with a width of 10-20mm and a depth of 15-25mm, used to adjust the position of the first fixed pulley (4).

3. The wall-mounted socket firmness testing device as described in claim 1, characterized in that: The fourth fixed pulley (7) is located at the end of the crossbeam of the gantry support (2).

4. The wall-mounted socket firmness testing device as described in claim 1, characterized in that: The grooves of the four fixed pulleys are in the same vertical plane.

5. The wall-mounted socket firmness testing device as described in claim 1, characterized in that: The tension wire (8) is made of nylon with a diameter of 1.5-2.5 mm and a breaking strength of ≥500 N.

6. The wall-mounted socket firmness testing device as described in claim 1, characterized in that: The gravity block (10) is a plurality of standard cast iron blocks weighing 0.5kg-5kg.

7. The wall-mounted socket firmness testing device as described in claim 1, characterized in that: The clearance between the guide shaft (11) and the guide hole of the gravity block (10) is 0.05-0.2mm.

8. The wall-mounted socket firmness testing device as described in claim 1, characterized in that: A tension sensor is installed at the end of the tension line, and a failure signal is set when the tension value drops by ≥10%.

9. The wall-mounted socket firmness testing device as described in claim 1, characterized in that: The product fixing plate (19) is made of 1.5mm thick cold-rolled steel plate, and the upper surface is provided with mounting holes that are compatible with 86-type and 118-type wall-mounted sockets.

10. The wall-mounted socket firmness testing device as described in any one of claims 1-9, characterized in that: The gantry bracket (2), guide wheel bracket (3), fixed pulley assembly, tension line (8), gravity block (10), guide shaft (11), cylinder assembly, electromagnet (12), cylinder connecting plate (13) and limit assembly are configured as a group, and multiple mounting holes are provided on the product fixing plate (19).

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