Insulation detection and thermal protector reset test device

Abstract

The invention discloses an insulation detection and thermal protector reset testing device, and belongs to the technical field of thermal protector body testing, the insulation detection and thermal protector reset testing device comprises a workbench, the upper side of the horizontal part of the workbench is provided with a fracture detection part, the fracture detection part comprises a sleeve plate arranged above the horizontal part of the workbench, and the left side and the right side of the interior of the sleeve plate are fixedly connected with fixing rings; according to the invention, the movable plate is arranged to displace after the insulation sleeve is broken and warn the insulation sleeve in time, and when the sleeve plate moves to the connection part between the shell and the cable, the sleeve plate can move to the connection part between the shell and the cable, so that the insulation sleeve can be prevented from being damaged, and the cable can be prevented from being damaged by the movable plate when the sleeve plate moves to the connection part between the shell and the cable. Whether the insulation sleeve on the outer side of the cable and the shell break or not can be judged according to whether the movable plate moves or not, the frequency of electrical accidents caused by breakage of the insulation sleeve of the thermal protector body is effectively reduced, and maintenance personnel can be conveniently reminded to replace or maintain the thermal protector body in time.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal protector body testing, and more particularly to an insulation detection and thermal protector reset testing device. Background Art

[0002] A thermal protector is a safety device designed to cut power or adjust operating conditions when electrical equipment overheats to prevent damage or fire. Once the temperature drops to a safe level, the thermal protector automatically resets, allowing the equipment to resume normal operation. The cable housing the thermal protector is typically covered with an insulating sheath to prevent current from flowing from one conductor to another. Good insulation is a key factor in ensuring the safe operation of electrical equipment.

[0003] The reset of a thermal protector typically relies on the physical properties of its internal temperature-sensing components (such as bimetallic strips and thermistors) changing with temperature. If the insulating sleeve on the outside of the thermal protector is damaged or abnormal, the normal operation of the thermal protector will also be affected. The presence of leakage current or damage can be determined by measuring the resistance value of the insulating material. In the prior art, the connection between the shell and the cable of the thermal protector body is often bent during assembly, and the insulating sleeve on the outside of the cable is tightly fitted with the shell. After being bent, especially when the thermal protector body is disassembled, the insulating sleeve and the shell may break or separate, which affects the protective effect of the insulating sleeve on the cable. There is also the risk of a short circuit between the thermal protector body and other electrical components, causing an electrical accident. Summary of the Invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide an insulation detection and thermal protector reset test device.

[0005] To solve the above problems, the present invention adopts the following technical solution, which can determine whether the insulating sleeve on the outside of the cable is broken from the shell based on whether the movable plate moves, and at the same time facilitates reminding maintenance personnel to replace or maintain the thermal protector body in time.

[0006] An insulation detection and thermal protector reset test device includes a workbench and a display screen arranged on the front side of the vertical part of the workbench, a thermal protector body is arranged above the horizontal part of the workbench, and a fracture detection component is arranged on the upper side of the horizontal part of the workbench; The fracture detection component includes a sleeve plate arranged above the horizontal part of the workbench, and the left and right sides of the sleeve plate are fixedly connected to fixed rings, and the back of the fixed ring is provided with moving grooves arranged in a circular array, and the left and right sides of the moving groove are provided with first slide grooves, and the interior of the moving groove is slidably connected with a moving plate, and the left and right sides of the moving plate are fixedly connected to first sliders, and the first slider is slidably connected in the first slide groove, and a first pressure spring is fixedly connected between the moving plate and the side of the moving groove away from the moving plate, and the other side of the moving plate is hinged with a movable plate, and pressure sensors are provided on the lower sides of the left and right corresponding interiors of the first slide grooves.

[0007] Furthermore, the movable plate is slidably connected inside the movable groove, the lower end of the movable plate is chamfered on one side close to the fixed ring, the movable plate is in an inverted "L" shape, the shape of the movable groove is adapted to the shape of the movable plate, the thermal protector body is mainly composed of a shell and a cable, and the fixed ring and the sleeve plate are both slidably connected to the outside of the cable.

[0008] Furthermore, a defect detection component is provided above the horizontal portion of the workbench, and the defect detection component includes a support platform that is in sliding contact with the horizontal portion of the workbench.

[0009] Furthermore, guide grooves are provided on both the left and right sides of the support platform, an electric push rod is provided on the left side of the support platform, and the left side of the back end of the movable plate is fixedly connected to the telescopic end of the electric push rod.

[0010] Furthermore, the movable plate is pressed and contacted with the outer side of the cable, and a warning light is provided on the upper side of the vertical part of the workbench.

[0011] Furthermore, a cleaning assembly is provided inside the support platform, and the cleaning assembly includes cleaning rings fixedly connected to the front side of the movable plate and arranged in parallel.

[0012] Furthermore, the cleaning ring is in sliding contact with the outer side of the cable, and the cleaning ring is made of sponge.

[0013] Furthermore, a measuring component is provided on the upper side of the horizontal portion of the workbench, and the measuring component includes a groove opened on the upper side of the horizontal portion of the workbench.

[0014] Furthermore, a cover body is inserted into the interior of the groove, the top of the cover body is connected to the external heating equipment, and an embedding groove is provided inside the front and rear side walls of the cover body. A baffle is slidably connected inside the embedding groove, and a second pressure spring is fixedly connected between the upper side of the interior of the embedding groove and the baffle. The lower side of the baffle is opened at an angle, and the back side of the support platform is opened at an angle, and the inclined surface of the support platform is in sliding and extrusion contact with the inclined surface of the baffle.

[0015] Furthermore, a second slide groove is provided on both sides of the left and right sides of the lower end of the groove, and a second slider is slidably connected to the inside of the second slide groove, and the second slider is fixedly connected to the lower side of the support platform. A megohmmeter is provided on the front side of the vertical part of the workbench, and a wire is plugged into the front side of the vertical part of the workbench. The other end of the wire is fixedly connected to a connecting terminal, and the connecting terminal is plugged into the front side of the support platform, and the cable is plugged into the other side of the connecting terminal.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention provides a movable plate that moves when the insulating sleeve breaks and issues a timely warning. When the plate moves to the connection between the shell and the cable, it can be determined whether the insulating sleeve on the outside of the cable is broken from the shell based on whether the movable plate moves. This effectively reduces the frequency of electrical accidents caused by the breaking of the insulating sleeve of the thermal protector body and facilitates reminding maintenance personnel to replace or maintain the thermal protector body in a timely manner.

[0017] (2) The present invention detects the outer side of the insulating sleeve by means of a sleeve plate during movement. Since the sleeve plate can detect the insulating sleeve on the outer side of the cable during horizontal movement, it can effectively detect whether there are large cracks or depressions on the insulating sleeve on the outer side of the cable, and issue a warning when large cracks or depressions are detected, thereby further improving the detection efficiency of the insulation effect of the thermal protector body.

[0018] (3) The present invention cleans the outside of the insulating sleeve by means of a cleaning ring. Since the cleaning ring moves on the outside of the cable before the fixed ring moves on the outside of the cable, the impurities attached to the outside of the cable can be effectively removed, which not only avoids the corrosion of the insulating sleeve on the outside of the cable by the impurities, but also prevents the impurities on the outside of the cable from causing errors when the movable plate detects the insulating sleeve on the outside of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 Schematic diagram of the cross-sectional structure of the workbench of the present invention; Figure 3 is a schematic cross-sectional structural diagram of the cover body of the present invention; Figure 4 It is a structural schematic diagram of the support platform of the present invention; Figure 5 Schematic diagram of the cross-sectional structure of the support platform of the present invention; Figure 6 It is a schematic cross-sectional structural diagram of the sleeve plate of the present invention; Figure 7 It is a schematic cross-sectional structural diagram of the fixing ring of the present invention; Figure 8It is a schematic cross-sectional structural diagram of the movable groove of the present invention.

[0020] Description of the numbers in the figure: 1. Workbench; 11. Display screen; 12. Warning light; 2. Megohmmeter; 21. Wire; 22. Connecting terminal; 3. Thermal protector body; 4. Fracture detection component; 41. Sleeve plate; 42. Fixed ring; 43. Moving groove; 431. First slide groove; 44. Moving plate; 441. First slider; 45. Movable plate; 46. First pressure spring; 47. Pressure sensor; 48. Defect detection component; 481. Support table; 482. Guide groove; 483. Electric push rod; 49. Cleaning component; 491. Cleaning ring; 5. Measuring component; 51. Groove; 52. Embedded groove; 53. Second pressure spring; 54. Baffle; 55. Second slide groove; 56. Second slider; 57. Cover. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] See also Figures 1 to 8 , an insulation detection and thermal protector reset test device, comprising a workbench 1 and a display screen 11 arranged on the front side of the vertical portion of the workbench 1, a thermal protector body 3 is arranged above the horizontal portion of the workbench 1, and a fracture detection component 4 is provided on the upper side of the horizontal portion of the workbench 1; The fracture detection component 4 includes a sleeve plate 41 arranged above the horizontal part of the workbench 1, and a fixed ring 42 is fixedly connected to the left and right sides of the sleeve plate 41, and a movable groove 43 is arranged in a circular array on the back side of the fixed ring 42, and a first sliding groove 431 is provided on the left and right sides of the movable groove 43. A movable plate 44 is slidably connected to the inside of the movable groove 43, and a first slider 441 is fixedly connected to the left and right sides of the movable plate 44. The first slider 441 is slidably connected in the first sliding groove 431, and a first pressure spring 46 is fixedly connected between the movable plate 44 and the side of the movable groove 43 away from the movable plate 44. A movable plate 45 is hinged on the other side of the movable plate 44, and a pressure sensor 47 is provided on the lower side of the left and right corresponding first sliding grooves 431.

[0023] The movable plate 45 is slidably connected to the inside of the movable groove 43. The lower end of the movable plate 45 is chamfered on one side close to the fixed ring 42. The movable plate 44 is in an inverted "L" shape. The shape of the movable groove 43 is adapted to the shape of the movable plate 44. The thermal protector body 3 is mainly composed of a shell and a cable. The fixed ring 42 and the sleeve plate 41 are both slidably connected to the outside of the cable.

[0024] By adopting the above technical solution, when the sleeve 41 is at the connection between the shell and the cable, the fixed ring 42 inside the sleeve 41 is also on the outside of the cable, and the movable plate 44 can slide in the movable groove 43 inside the fixed ring 42, and at the same time, the first sliders 441 on both sides of the movable plate 44 slide in the first slide groove 431 on the side wall of the movable groove 43. When the cable passes through the fixed ring 42, the movable plate 45 hinged under the movable plate 44 will contact the cable. Because the movable plate 44 is restricted in the movable groove 43 by the first pressure spring 46, and the first pressure spring 46 always squeezes the movable plate 44, after the movable plate 44 is squeezed, the movable plate 45 will also squeeze the cable tightly. If there is a gap between the insulating sleeve on the outside of the cable and the shell, When broken, the movable plate 45 will enter the gap between the shell and the cable. At the same time, the first slider 441 on the side of the movable plate 44 moves downward inside the first slide groove 431 due to the downward movement of the movable plate 45, and squeezes the pressure sensor 47 inside the first slide groove 431. Then the pressure sensor 47 transmits the signal to the display screen 11 and displays it through the display screen 11. When the sleeve plate 41 moves to the connection between the shell and the cable, it can be judged whether the insulating sleeve on the outside of the cable is broken from the shell based on whether the movable plate 45 moves, which effectively reduces the frequency of electrical accidents caused by the breakage of the insulating sleeve of the thermal protector body 3, and also facilitates reminding maintenance personnel to replace or maintain the thermal protector body 3 in time.

[0025] like Figures 6 to 8 As shown, a defect detection assembly 48 is provided above the horizontal portion of the workbench 1 , and the defect detection assembly 48 includes a support platform 481 that is in sliding contact with the horizontal portion of the workbench 1 .

[0026] Guide grooves 482 are provided on both sides of the support platform 481 . An electric push rod 483 is provided on the left side of the support platform 481 . The left side of the back end of the movable plate 44 is fixedly connected to the telescopic end of the electric push rod 483 .

[0027] The movable plate 45 is pressed and contacted with the outside of the cable, and a warning light 12 is provided on the upper side of the vertical portion of the workbench 1 .

[0028] By adopting the above technical solution, as the electric push rod 483 slowly pushes the sleeve 41, the sleeve 41 slides on the outside of the cable, and the sleeve 41 also slides inside the guide groove 482 on the side of the support platform 481. During this process, if the insulating sleeve on the outside of the cable is dented or has a large crack, the movable plate 45 will be embedded in the inside of the dent or large crack. At this time, the first slider 441 will squeeze the pressure sensor 47 inside the first slide groove 431, and then the pressure sensor 47 will transmit the information to the display screen 11 and display it through the display screen 11. At the same time, the controller inside the workbench 1 will start the warning light 12. Since the sleeve 41 can detect the insulating sleeve on the outside of the cable during the horizontal movement, it can effectively detect whether there are large cracks or dents on the insulating sleeve on the outside of the cable, and issue a warning when a large crack or dent is detected, thereby further improving the detection efficiency of the insulation effect of the thermal protector body 3.

[0029] like Figure 4 and Figure 5 As shown, a cleaning assembly 49 is provided inside the support platform 481 , and the cleaning assembly 49 includes cleaning rings 491 fixedly connected to the front side of the movable plate 45 and arranged in parallel.

[0030] The cleaning ring 491 is in sliding contact with the outside of the cable, and the cleaning ring 491 is made of sponge.

[0031] By adopting the above technical solution, as the sleeve 41 slides on the outside of the cable, the cleaning ring 491 fixed on the front side of the sleeve 41 will move together with the sleeve 41, and the cleaning ring 491 will remove impurities attached to the surface of the insulating sleeve on the outside of the cable during the movement. After the cleaning ring 491 moves on the outside of the cable, the fixed ring 42 inside the sleeve 41 will move on the outside of the cable. Since the cleaning ring 491 will move on the outside of the cable before the fixed ring 42 moves on the outside of the cable, the impurities attached to the outside of the cable can be effectively removed, which not only avoids the corrosion of the insulating sleeve on the outside of the cable by impurities, but also prevents the impurities on the outside of the cable from causing errors when the movable plate 45 detects the insulating sleeve on the outside of the cable.

[0032] like Figures 1 to 5 As shown, a measuring component 5 is provided on the upper side of the horizontal portion of the workbench 1 , and the measuring component 5 includes a groove 51 opened on the upper side of the horizontal portion of the workbench 1 .

[0033] A cover body 57 is inserted into the interior of the groove 51, and the top of the cover body 57 is connected to the external heating equipment. An embedding groove 52 is provided inside the front and rear side walls of the cover body 57. A baffle 54 is slidably connected to the interior of the embedding groove 52. A second pressure spring 53 is fixedly connected between the inner upper side of the embedding groove 52 and the baffle 54. The lower side of the baffle 54 is opened at an angle, and the back side of the support platform 481 is opened at an angle, and the inclined surface of the support platform 481 is in sliding and extruding contact with the inclined surface of the baffle 54.

[0034] A second slide groove 55 is provided on both sides of the lower end of the groove 51. The second slide groove 55 is slidably connected to the inside of the second slide groove 55. The second slide block 56 is fixedly connected to the lower side of the support platform 481. A megohmmeter 2 is provided on the front side of the vertical part of the workbench 1. A wire 21 is plugged into the front side of the vertical part of the workbench 1. The other end of the wire 21 is fixedly connected to a connecting terminal 22. The connecting terminal 22 is plugged into the front side of the support platform 481, and the cable is plugged into the other side of the connecting terminal 22.

[0035] By adopting the above technical solution, after the thermal protector body 3 is placed inside the support platform 481, one end of the cable is connected to the connecting terminal 22, and then the support platform 481 is pushed toward the cover body 57. During the movement of the support platform 481 inside the groove 51, the second slider 56 under the support platform 481 will slide inside the second slide groove 55. When the support platform 481 contacts the baffle 54 inside the embedded groove 52, the second pressure spring 53 inside the embedded groove 52 always pushes the baffle 54, so that the inclined surface of the back of the support platform 481 contacts the inclined surface of the baffle 54. As the support platform 481 continues to move, the baffle 54 will be gradually lifted until the lower side of the baffle 54 contacts the upper side of the support platform 481. After the protector body 3 is completely inside the cover body 57, the external heating equipment will send hot air into the cover body 57 to simulate overheating. Because the connection terminal 22 is connected to the workbench 1 and the megohmmeter 2, if the thermal protector body 3 does not reset after cooling, the actual information will be displayed on the display screen 11. Then the megohmmeter 2 performs insulation resistance detection on the thermal protector body 3, and the actual information will also be displayed on the display screen 11. Since the thermal protector body 3 is inside the cover body 57 during the reset test, the thermal protector body 3 can be in a closed state, which reduces the rate of heat loss, improves the simulated overheating effect of the thermal protector body 3, and the insulation resistance detection can also be carried out simultaneously, thereby improving the detection efficiency of the thermal protector body 3.

[0036] Working principle: After placing the thermal protector body 3 inside the support platform 481, connect one end of the cable to the connecting terminal 22, and then push the support platform 481 toward the cover 57. When the support platform 481 contacts the baffle 54 inside the embedded groove 52, the second pressure spring 53 inside the embedded groove 52 always pushes the baffle 54, so that the inclined surface of the back of the support platform 481 contacts the inclined surface of the baffle 54. As the support platform 481 continues to move, the baffle 54 will be gradually lifted until the lower side of the baffle 54 contacts the upper side of the support platform 481. When the thermal protector body 3 is fully inserted, After entering the cover body 57, the external heating device will send hot air into the cover body 57 to simulate overheating. If the thermal protector body 3 does not reset after cooling, the actual information will be displayed on the display screen 11. Then the megohmmeter 2 performs insulation resistance detection on the thermal protector body 3, and the actual information will also be displayed on the display screen 11. When the sleeve plate 41 is at the connection between the shell and the cable, the movable plate 45 hinged under the movable plate 44 will contact the cable. At the same time, the first pressure spring 46 always squeezes the movable plate 44. After the movable plate 44 is squeezed, the movable plate 45 will also squeeze the cable tightly. If the cable When a break occurs between the insulating sleeve on the outside of the cable and the shell, the movable plate 45 will enter the gap between the shell and the cable. At the same time, the first slider 441 on the side of the movable plate 44 moves downward inside the first slide groove 431 due to the downward movement of the movable plate 45, and squeezes the pressure sensor 47 inside the first slide groove 431. Then the pressure sensor 47 transmits the signal to the display screen 11. As the electric push rod 483 slowly pushes the sleeve plate 41, the sleeve plate 41 will also slide inside the guide groove 482 on the side of the support platform 481. If the insulating sleeve on the outside of the cable is dented or has a large crack, The movable plate 45 will be embedded in the inside of the depression or larger crack. At this time, the first slider 441 will squeeze the pressure sensor 47 inside the first slide groove 431, and then the pressure sensor 47 will transmit the information to the display screen 11. At the same time, the controller inside the workbench 1 will start the warning light 12. The cleaning ring 491 fixed on the front side of the sleeve 41 will move with the sleeve 41, and the cleaning ring 491 will move first and remove impurities attached to the surface of the insulating sleeve on the outside of the cable. After the cleaning ring 491 moves on the outside of the cable, the fixed ring 42 inside the sleeve 41 will move on the outside of the cable.

[0037] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. An insulation detection and thermal protector reset test device, comprising a workbench (1) and a display screen (11) arranged on the front side of the vertical portion of the workbench (1), a thermal protector body (3) being arranged above the horizontal portion of the workbench (1), characterized in that: A fracture detection component (4) is provided on the upper side of the horizontal portion of the workbench (1); The fracture detection component (4) includes a sleeve (41) arranged above the horizontal part of the workbench (1), the sleeve (41) is fixedly connected to a fixed ring (42) on both the left and right sides, the back of the fixed ring (42) is provided with a moving groove (43) arranged in a circular array, the moving groove (43) is provided with a first sliding groove (431) on both the left and right sides, the moving groove (43) is slidably connected to a moving plate (44) on the inside, the moving plate (44) is fixedly connected to a first slider (441) on both the left and right sides, the first slider (441) is slidably connected in the first sliding groove (431), a first pressure spring (46) is fixedly connected between the moving plate (44) and a side of the moving groove (43) away from the moving plate (44), the other side of the moving plate (44) is hinged to a movable plate (45), and pressure sensors (47) are provided on the lower sides of the left and right corresponding first sliding grooves (431).

2. The insulation detection and thermal protector reset test device according to claim 1, characterized in that: The movable plate (45) is slidably connected to the inside of the movable groove (43). The lower end of the movable plate (45) is chamfered on one side close to the fixed ring (42). The movable plate (44) is in an inverted "L" shape. The shape of the movable groove (43) is adapted to the shape of the movable plate (44). The thermal protector body (3) mainly consists of a shell and a cable. The fixed ring (42) and the sleeve plate (41) are both slidably connected to the outside of the cable.

3. The insulation detection and thermal protector reset test device according to claim 1, characterized in that: A defect detection assembly (48) is provided above the horizontal portion of the workbench (1), and the defect detection assembly (48) comprises a support platform (481) in sliding contact with the horizontal portion of the workbench (1).

4. The insulation detection and thermal protector reset test device according to claim 3, characterized in that: Guide grooves (482) are provided on both the left and right sides of the support platform (481), an electric push rod (483) is provided on the left side of the support platform (481), and the left side of the back end of the movable plate (44) is fixedly connected to the telescopic end of the electric push rod (483).

5. The insulation detection and thermal protector reset test device according to claim 1, characterized in that: The movable plate (45) is pressed and contacted with the outside of the cable, and a warning light (12) is provided on the upper side of the vertical portion of the workbench (1).

6. The insulation detection and thermal protector reset test device according to claim 4, characterized in that: A cleaning assembly (49) is provided inside the support platform (481), and the cleaning assembly (49) includes cleaning rings (491) fixedly connected to the front side of the movable plate (45) and arranged in parallel.

7. The insulation detection and thermal protector reset test device according to claim 6, characterized in that: The cleaning ring (491) is in sliding contact with the outside of the cable, and the cleaning ring (491) is made of sponge.

8. The insulation detection and thermal protector reset test device according to claim 6, characterized in that: A measuring component (5) is provided on the upper side of the horizontal portion of the workbench (1), and the measuring component (5) includes a groove (51) opened on the upper side of the horizontal portion of the workbench (1).

9. The insulation detection and thermal protector reset test device according to claim 8, characterized in that: A cover body (57) is inserted into the interior of the groove (51), and the top end of the cover body (57) is connected to an external heating device. An embedding groove (52) is provided inside the front and rear side walls of the cover body (57), and a baffle (54) is slidably connected inside the embedding groove (52). A second pressure spring (53) is fixedly connected between the upper side of the interior of the embedding groove (52) and the baffle (54). The lower side of the baffle (54) is inclined, and the back side of the support platform (481) is inclined, and the inclined surface of the support platform (481) is in sliding and extruding contact with the inclined surface of the baffle (54).

10. The insulation detection and thermal protector reset test device according to claim 9, characterized in that: A second slide groove (55) is provided on both the left and right sides of the lower end of the groove (51), and a second slider (56) is slidably connected to the inside of the second slide groove (55), and the second slider (56) is fixedly connected to the lower side of the support platform (481). A megohmmeter (2) is provided on the front side of the vertical portion of the workbench (1), and a wire (21) is plugged into the front side of the vertical portion of the workbench (1). The other end of the wire (21) is fixedly connected to a connecting terminal (22), and the connecting terminal (22) is plugged into the front side of the support platform (481). The cable is plugged into the other side of the connecting terminal (22).

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