A fail-safe overload protector

Abstract

The utility model relates to overload protector technical field, and disclose a kind of anti-failure overload protector, including bottom shell, the inside of bottom shell is equipped with spring, the inside one side of bottom shell is equipped with mounting seat and connecting seat, mounting head, protection component, electricity connection component.The utility model structure is reasonable, protection bolt is used to make protection seat installation fixed to mounting seat, electricity connection bolt is used to make electricity connection seat installation fixed to electricity connection seat, quickly make protection piece and electricity connection piece fixed to bottom shell, reduce the loosening after long-term use and lead to equipment failure influence use, metal sheet overheating and connecting block disconnect after connection, push protection button to make protection button in mounting head sliding movement by spring, protection button moves downward and contacts metal sheet, so that metal piece resets and connecting block is newly connected, rotate and take down rebound bolt to make rebound rod slide in protection button, rebound rod drives rebound block to move upward, rebound block extends button hole and pushes metal piece upward reset.

Description

Technical Field

[0001] This utility model relates to the field of overload protector technology, specifically an overload protector designed to prevent failure. Background Technology

[0002] Overload protectors are commonly referred to as: torque retainers, overload protectors, torque clutches, torque limiters, axial load overload protectors, torque limiters, safety clutches, safety couplings, force-limiting clutches, clutch force limiters, ball clutches, friction clutches. The function of overload protectors is to be installed between the driving and driven sides of a power transmission system. When an overload fault occurs, the torque limiter disengages, effectively protecting the drive machinery and the load. Common types are friction-type torque limiters and ball-type torque limiters. The mounting structures of torque limiters include: shaft-to-shaft, shaft-to-flange, shaft-to-synchronous pulley, shaft-to-sprocket, shaft-to-gear, and shaft-to-pulley.

[0003] Existing overload protectors can monitor the current changes of the electrical system in real time. When the current exceeds the set value, they will automatically cut off the power supply to prevent the equipment from being damaged due to overload. However, they cannot quickly fix the protection plate and the connecting plate into the housing to reduce loosening and connection problems after long-term use. They also cannot automatically reset in special circumstances after long-term use and cannot effectively reduce the problem of the rebound rod shaking in the protection button, causing the rebound block to move and affecting subsequent use. Therefore, a utility model is proposed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a failure-proof overload protector that solves the problems of reduced internal component loosening affecting use, failure to automatically reset after prolonged use, and impact of spring block position movement on use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a failure-proof overload protector includes a base shell, a spring inside the base shell, a mounting seat on one side of the base shell, a connecting seat on the other side of the base shell, a mounting head on one side of the base shell, a protection component and a power connection component arranged sequentially from front to back on one side of the base shell, an outer shell connected to the upper surface of the base shell by mounting bolts, a protection button at one end of the spring, a button hole on the surface of the protection button, a spring block inside the button hole, a baffle inside the protection button, a bolt passing through a button head at one end of the protection button, a spring rod inside the button head, a pull ring at one end of the spring rod, and a spring bolt threaded through one side of the spring rod.

[0006] Optionally, the protective assembly includes a protective base, a protective plate, a metal plate, and a protective bolt. The protective plate is provided on one side of the protective base, the metal plate is provided on the upper surface of the protective base, and the protective bolt passes through the internal thread of the protective base.

[0007] Optionally, the power connection assembly includes a power connection base, a power connection piece, a connecting block, and a power connection bolt. The power connection base has a power connection piece on one side, a connecting block on the upper surface of the power connection base, and a power connection bolt passing through the internal thread of the power connection base.

[0008] Optionally, a button hole is provided on the surface of the protection button near the end of the spring, and a baffle is provided on the side of the button hole near the button head.

[0009] Optionally, a spring groove is provided at the bottom of one side of the button head, and a spring rod is slidably connected inside the spring groove.

[0010] Optionally, a threaded hole is provided on the surface of the protection button near the button head, and the rebound rod is fixed to the protection button by a rebound bolt.

[0011] Optionally, the upper surface of the bottom shell is provided with a protective groove and a wiring groove, the protective groove is provided with a mounting base, and the wiring groove is provided with a connecting base.

[0012] Optionally, one end of the rebound rod is provided with a push block, the upper surface of which is adapted to the lower surface of the rebound block.

[0013] In summary, the technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model has a reasonable structure. The protective seat is installed and fixed in the mounting base by the protective bolt, and the electrical connection seat is installed and fixed in the electrical connection seat by the electrical connection bolt. The protective plate and the electrical connection plate are quickly fixed in the base shell, which effectively reduces the equipment failure caused by loosening after long-term use. After the metal plate overheats and disconnects from the connecting block, the protection button is pushed and the spring causes the protection button to slide in the mounting head. The protection button moves downward to contact the metal plate, so that the metal plate resets and reconnects with the connecting block.

[0015] 2. In this utility model, by pushing the protection button to the corresponding position, rotating and removing the spring bolt causes the spring rod to slide inside the protection button. The spring rod drives the spring block to move upward, causing the spring block to extend out of the button hole and push the metal piece that cannot be reset upward to reset. This reduces the need for manual reset when the metal piece cannot automatically reset after a long period of use, allowing the equipment to temporarily operate to complete the current work. By rotating the spring bolt, the spring rod is fixed inside the protection button, effectively reducing the impact of the spring rod shaking on the position of the spring block and subsequent use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the bottom shell structure of this utility model;

[0018] Figure 3 This is an exploded view of the outer shell structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the protective sheet structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the electrical contact plate structure of this utility model;

[0021] Figure 6 This is an exploded view of the protective button structure of this utility model;

[0022] Figure 7 This is an exploded schematic diagram of the rebound rod structure of this utility model.

[0023] In the diagram: 1. Base shell; 2. Spring; 3. Mounting base; 4. Connecting base; 5. Mounting head; 6. Protective assembly; 601. Protective base; 602. Protective plate; 603. Metal plate; 604. Protective bolt; 7. Electrical connection assembly; 701. Electrical connection base; 702. Electrical connection plate; 703. Connecting block; 704. Electrical connection bolt; 8. Housing; 9. Protective button; 10. Button hole; 11. Spring block; 12. Baffle; 13. Button head; 14. Spring rod; 15. Pull ring; 16. Spring bolt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example: Reference Figures 1-7The overload protector shown includes a base shell 1, a spring 2 inside the base shell 1, a mounting base 3 on one side inside the base shell 1, a connecting base 4 on the other side inside the base shell 1, a mounting head 5 on one side of the base shell 1, a protection component 6 and a power connection component 7 arranged sequentially from front to back on one side of the base shell 1, an outer shell 8 connected to the upper surface of the base shell 1 by mounting bolts, a protection button 9 at one end of the spring 2, a button hole 10 on the surface of the protection button 9, a spring block 11 inside the button hole 10, a baffle 12 inside the protection button 9, a button head 13 bolted through one end of the protection button 9, a spring rod 14 inside the button head 13, a pull ring 15 at one end of the spring rod 14, and a spring bolt 16 threaded through one side of the spring rod 14.

[0026] As a preferred embodiment of this example, Figures 2 to 7As shown, a spring 2 is provided inside the bottom shell 1. A mounting base 3 is provided on one side of the bottom shell 1, and a connecting base 4 is provided on the other side of the bottom shell 1. A protective groove and a wiring groove are formed on the upper surface of the bottom shell 1. The mounting base 3 is provided inside the protective groove, and the connecting base 4 is provided inside the wiring groove. A mounting head 5 is provided on one side of the bottom shell 1. A protective component 6 and a power connection component 7 are arranged sequentially from front to back on one side of the bottom shell 1. The protective component 6 includes a protective base 601, a protective plate 602, a metal plate 603, and a protective bolt 604. The protective plate 602 is provided on one side of the protective base 601, and the metal plate 603 is provided on the upper surface of the protective base 601. The protective bolt 604 passes through the internal thread of the protective base 601. The protective component 6 is installed with the mounting base 3 through the protective bolt 604. The power connection assembly 7 includes a power connection base 701, a power connection piece 702, a connecting block 703, and a power connection bolt 704. A power connection piece 702 is provided on one side of the power connection base 701, and a connecting block 703 is provided on the upper surface of the power connection base 701. The power connection bolt 704 passes through the internal thread of the power connection base 701. The power connection assembly 7 is installed via the power connection bolt 704. A housing 8 is connected to the upper surface of the bottom housing 1 via mounting bolts. A protective button 9 is provided at one end of the spring 2. A button hole 10 is provided on the surface of the protective button 9. A return block 11 is provided inside the button hole 10. A push block is provided at one end of the return rod 14. The upper surface of the push block and the lower surface of the return block 11 are mutually adapted. A baffle 12 is provided inside the protective button 9. The surface of the protective button 9 is close to the spring. One end of the spring 2 has a button hole 10. A baffle 12 is provided on the side of the button hole 10 near the button head 13. A bolt passes through the button head 13 at one end of the protective button 9. A return rod 14 is provided inside the button head 13. A return groove is provided at the bottom of one side of the button head 13. The return rod 14 is slidably connected inside the return groove. A pull ring 15 is provided at one end of the return rod 14. A return bolt 16 is threaded through one side of the return rod 14. A threaded hole is provided on the surface of the protective button 9 near the button head 13. The return rod 14 is fixed to the protective button 9 by the return bolt 16. The metal sheet 603 is a bimetallic strip. A bimetallic strip is a composite material composed of two or more metals or other materials with suitable properties. A bimetallic strip is also called a thermal bimetallic strip. Because the coefficients of thermal expansion of each component layer are different, the deformation of the active layer is greater than that of the passive layer when the temperature changes. This causes the bimetallic sheet to bend towards the passive layer, resulting in a change in the curvature of the composite material and subsequent deformation. During use, the protective seat 601 is fixed to the mounting base 3 using the protective bolt 604, and the electrical connector 701 is fixed to the electrical connector 701 using the connecting bolt 704. This allows for quick and easy fixing of the protective sheet 602 and the electrical connector 702 into the base shell 1, effectively reducing the risk of equipment malfunction due to loosening after long-term use. After the metal sheet 603 overheats and disconnects from the connecting block 703, the protective button 9 is pushed, causing it to slide within the mounting head 5 via the spring 2.Moving the protection button 9 downwards contacts the metal plate 603, resetting the metal plate 603 and reconnecting it to the connecting block 703. If moving the protection button 9 fails to reset the metal plate 603, push the protection button 9 to the appropriate position. Rotate and remove the return bolt 16 to allow the return rod 14 to slide within the protection button 9. Pull the pull ring 15 to move the return rod 14 outwards, causing the return rod 14 to move the return block 11 upwards, extending the return block 11 out of the button hole 10 to engage the metal plate 603 that cannot be reset. Pushing the reset button upwards quickly resets the metal plate 603, reconnecting it to the connecting block 703. This reduces the need for manual reset in case the metal plate 603 fails to reset automatically after prolonged use, allowing the equipment to temporarily operate and complete its current task. Rotating the return bolt 16 secures the return rod 14 within the protection button 9, reducing its movement within the button and effectively minimizing the impact of movement on the return block 11.

[0027] The working principle of this practical application is as follows:

[0028] During use, open the outer casing 8 and insert the protective plate 602 into the protective groove inside the bottom casing 1. Secure the protective seat 601 to the mounting base 3 using the protective bolt 604. Insert the connecting piece 702 into the wiring groove of the bottom casing 1 and secure the connecting seat 701 to the connecting base 701 using the connecting bolt 704. Secure the protective plate 602 and the connecting piece 702 to the bottom casing 1. Secure the outer casing 8 to the bottom casing 1 using the mounting bolts. After connecting the required equipment to the protective plate 602 and the connecting piece 702, excessive current and heat generated during prolonged operation of the equipment will cause the metal piece 603 to expand due to heat. Because of the different coefficients of thermal expansion of the metal pieces 603, the metal piece 603 will bend and deform. When the deformation reaches a certain angle, the metal piece 603 will push the contact to disconnect. After shutting down the equipment, push the protection button 9, which will be held in place by the spring 2. The device slides within the head 5, and moves downwards via the protection button 9 to contact the metal plate 603, resetting the metal plate 603 and reconnecting it to the connecting block 703. If the protection button 9 fails to reset the metal plate 603, in special circumstances, the protection button 9 can be pushed to the appropriate position. The return bolt 16 can be rotated to allow the return rod 14 to slide within the protection button 9. The pull ring 15 can be pulled to move the return rod 14 outwards, causing the return block 11 to move upwards. The return block 11 extends out of the button hole 10 and pushes the unreset metal plate 603 upwards, resetting it. This allows the device to temporarily operate and complete its current task. After use, the return bolt 16 can be rotated to fix the return rod 14 within the protection button 9, reducing the impact of the return rod 14 shaking within the protection button 9 on subsequent use.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fail-safe overload protector comprising a base housing (1), characterized in that: The bottom shell (1) is provided with a spring (2) inside. A mounting seat (3) is provided on one side of the bottom shell (1) and a connecting seat (4) is provided on the other side of the bottom shell (1). A mounting head (5) is provided on one side of the bottom shell (1). A protective component (6) and a power connection component (7) are provided sequentially from front to back on one side of the bottom shell (1). An outer shell (8) is connected to the upper surface of the bottom shell (1) by mounting bolts. A protective button (9) is provided at one end of the spring (2). A button hole (10) is provided on the surface of the protective button (9). A spring block (11) is provided inside the button hole (10). A baffle (12) is provided inside the protective button (9). A button head (13) is bolted through one end of the protective button (9). A spring rod (14) is provided inside the button head (13). A pull ring (15) is provided at one end of the spring rod (14). A spring bolt (16) is threaded through one side of the spring rod (14).

2. A fail-safe overload protector according to claim 1, wherein: The protective component (6) includes a protective seat (601), a protective plate (602), a metal plate (603), and a protective bolt (604). The protective plate (602) is provided on one side of the protective seat (601), and the metal plate (603) is provided on the upper surface of the protective seat (601). The protective bolt (604) passes through the internal thread of the protective seat (601).

3. The overload protector against failure according to claim 1, characterized in that: The power connection assembly (7) includes a power connection base (701), a power connection piece (702), a connecting block (703), and a power connection bolt (704). The power connection base (701) has a power connection piece (702) on one side, a connecting block (703) on the upper surface of the power connection base (701), and a power connection bolt (704) through the internal thread of the power connection base (701).

4. The fail-safe overload protector of claim 1, wherein: The protective button (9) has a button hole (10) on one end of its surface near the spring (2), and a baffle (12) is provided on the side of the button hole (10) near the button head (13).

5. The fail-safe overload protector of claim 1, wherein: A spring groove is provided at the bottom of one side of the button head (13), and a spring rod (14) is slidably connected inside the spring groove.

6. The fail-safe overload protector of claim 1, wherein: The protective button (9) has a threaded hole at one end near the button head (13), and the spring rod (14) is fixed to the protective button (9) by a spring bolt (16).

7. The fail-safe overload protector of claim 1, wherein: The upper surface of the bottom shell (1) is provided with a protective groove and a wiring groove. The protective groove is provided with a mounting base (3), and the wiring groove is provided with a connecting base (4).

8. The fail-safe overload protector of claim 1, wherein: One end of the spring rod (14) is provided with a push block, and the upper surface of the push block is adapted to the lower surface of the spring block (11).

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