Power distribution box knife switch rotation operation mechanism

Abstract

The utility model relates to the distribution box knife switch protection technical field, and discloses a distribution box knife switch rotation operation mechanism comprising a switch, the middle parts of two sides in the switch are fixedly provided with connecting bolts, and two sides of one end in the switch are fixedly provided with binding posts. According to the utility model, when an operator powers off the switch, the shifting box is rotated reversely, so that the two groups of blades can be separated from the two groups of cutter holders, and when the two groups of blades slowly rotate around the cutter holder as the center, the spring in the protection mechanism is rotated to pull the take-up box to automatically reset, so that the extending pull rope is accommodated in the take-up box; when the pull rope continuously contracts, the guide cover and the protective bag can be synchronously pulled to move in the contraction direction of the pull rope, it is guaranteed that the protective bag can be completely connected to the outer side of the blade in a sleeving mode, and it is avoided that the blade is exposed to the outside for a long time to be rusted, contact resistance is increased, the blade and a wire are overheated in the running process, and fire disasters or equipment damage is possibly caused.

Description

Technical Field

[0001] This utility model relates to the field of protection technology for knife switches in distribution boxes, specifically a rotary operating mechanism for a knife switch in a distribution box. Background Technology

[0002] Currently, knife switches, also known as circuit breakers, are generally used in AC and DC low-voltage circuits that do not require frequent switching on and off. Under rated voltage, their operating current cannot exceed the rated value. On machine tools, knife switches are mainly used as power switches, and they are generally not used to connect or disconnect the operating current of motors.

[0003] When the distribution box is in operation, a knife switch is usually installed, and the knife switch handle is rotated to make the knife switch contact or separate from the metal contact piece, thereby controlling the opening and closing of the circuit.

[0004] When using conventional knife switches, the blades on the switch are exposed to the outside for a long time, which can easily cause the blades to rust. Rusting of the blades will increase the contact resistance, causing the blades and wires to overheat during operation, which may lead to fire or equipment damage. Therefore, a new technical solution needs to be designed to solve this problem. By designing a protective sleeve on the outside of the blade, the blade can be protected and rusting can be prevented. Utility Model Content

[0005] The purpose of this utility model is to provide a rotary operating mechanism for a knife switch in a distribution box, which solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rotary operating mechanism for a distribution box knife switch, comprising a switch, wherein connecting bolts are fixedly installed in the middle of both sides inside the switch, terminals are fixedly installed in both sides of one end inside the switch, fuses are fixedly installed in one end of each of the two sets of terminals, knife holders are fixedly installed in the other side of each of the two sets of fuses, blades are rotatably installed on each of the two sets of knife holders, and a rotation protection mechanism is installed on each of the two sets of blades;

[0007] The rotation protection mechanism includes a dial box fixedly installed at the other end of each of the two sets of blades, a take-up roller rotatably installed in the middle inside the dial box, two sets of protective bags wrapped around the outer wall of the take-up roller, a take-up box rotatably installed on one side of each of the two sets of blade holders, a spring installed inside each of the two sets of take-up boxes, and a pull rope wrapped around the outer wall of each of the two sets of take-up boxes. A handle is fixedly installed at one end of the central shaft of each take-up box.

[0008] As an optional solution to the technical solution of this application, the other ends of the two sets of pull ropes are respectively fixedly installed to one end of the two sets of protective bags, and the two sets of protective bags are respectively sleeved on the outer wall of the two sets of blades.

[0009] As an optional solution to the technical solution of this application, blade clips are fixedly installed on both sides of the other end of the switch. The two sets of blade clips correspond to the two sets of blades respectively, which can ensure that the switch is closed and opened.

[0010] As an optional solution to the technical solution of this application, a guide cover is fixedly installed at one end of each of the two sets of protective bags. The two sets of guide covers are movably connected to the two sets of blades respectively, and the two sets of guide covers are fixedly installed at one end of the two sets of pull ropes respectively, which can guide the protective bags.

[0011] As an optional solution to the technical solution of this application, support rollers are rotatably installed on both sides inside the dial box, and the two sets of support rollers are movably connected to two sets of protective bags respectively, so as to support the protective bags.

[0012] As an optional solution to the technical solution of this application, two sets of equidistant positioning posts are fixedly installed on both sides inside the switch, and the two sets of springs are fixedly installed on both sides of the positioning posts and the side wall of the take-up box, respectively, so that the take-up box can automatically reset after rotation.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. The technical solution of this application allows the operator to disconnect the power to the switch, and the reverse rotating box can disengage the two sets of blades from the two sets of blade holders. As the two sets of blades slowly rotate around the blade holder, the spring in the rotation protection mechanism will pull the take-up box to automatically reset, and the extended pull rope will be stored in the take-up box. As the pull rope continuously retracts, it will simultaneously pull the guide cover and the protective bag to move along the direction of the pull rope retraction, ensuring that the protective bag can be completely fitted on the outside of the blades, avoiding the blades from being exposed to the outside for a long time and rusting, which would lead to increased contact resistance and cause the blades and wires to overheat during operation, potentially causing a fire or equipment damage.

[0015] 2. The technical solution of this application has support rollers rotatably installed on both sides inside the dial box, and the two sets of support rollers are movably connected to two sets of protective bags respectively. When the operator screws the handle on the outside of the dial box, the winding roller inside the dial box can be rotated to wind up the protective bags on the two sets of blades. This ensures that when the two sets of blades are connected to the blade clamp, the protective bags are wound up to one end of the blades. At the same time, in conjunction with the support rollers rotatably installed on both sides inside the dial box, the two sets of protective bags can be efficiently supported and pulled, ensuring that the two sets of protective bags are wound up by the winding roller at the same time. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0017] Figure 1This is a schematic diagram of the overall structure of a rotary operating mechanism for a distribution box knife switch according to the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the rotary operating mechanism of a knife switch in a distribution box according to the present invention.

[0019] Figure 3 This is a schematic diagram of the spring distribution structure of a rotary operating mechanism for a distribution box knife switch according to the present invention.

[0020] In the diagram: 1. Switch; 11. Connecting bolt; 12. Terminal block; 13. Fuse; 14. Blade holder; 15. Blade clip; 2. Blade; 21. Dispenser box; 22. Take-up roller; 23. Protective bag; 24. Take-up box; 3. Handle; 31. Guide cover; 32. Support roller; 33. Spring; 34. Positioning post. Detailed Implementation

[0021] Please see Figure 1-3 This utility model provides a technical solution: a rotary operating mechanism for a distribution box knife switch, including a switch 1, with connecting bolts 11 fixedly installed on the middle of both sides inside the switch 1, and terminals 12 fixedly installed on both sides of one end inside the switch 1, with fuses 13 fixedly installed on one end of each of the two sets of terminals 12, and knife holders 14 fixedly installed on the other side of each of the two sets of fuses 13, with blades 2 rotatably installed on each of the two sets of knife holders 14, and a rotation protection mechanism installed on each of the two sets of blades 2;

[0022] The rotation protection mechanism includes a dial box 21 fixedly installed at the other end of each of the two sets of blades 2, a take-up roller 22 rotatably installed in the middle inside the dial box 21, two sets of protective bags 23 wrapped around the outer wall of the take-up roller 22, a take-up box 24 rotatably installed on one side of each of the two sets of blade holders 14, a spring 33 installed inside each of the two sets of take-up boxes 24, and a pull rope wrapped around the outer wall of each of the two sets of take-up boxes 24. A handle 3 is fixedly installed at one end of the central shaft of the take-up box 24, and the other ends of the two sets of pull ropes are respectively fixedly installed at one end of each of the two sets of protective bags 23. The two sets of protective bags 23 are respectively fitted onto the outer wall of each of the two sets of blades 2.

[0023] In this technical solution, when the operator disconnects the power to switch 1, the reverse switch box 21 rotates, causing the two sets of blades 2 to disengage from the two sets of blade clips 15. As the two sets of blades 2 slowly rotate around the blade holder 14, the spring 33 in the rotation protection mechanism pulls the take-up box 24 to automatically reset, retracting the extended pull rope into the take-up box 24. As the pull rope continuously retracts, it simultaneously pulls the guide cover 31 and the protective bag 23 to move along the direction of the pull rope's retraction, ensuring that the protective bag 23 can be completely fitted over the outside of the blades 2. This prevents the blades 2 from being exposed to the outside environment for a long time, causing them to rust and resulting in increased contact resistance. This could cause the blades 2 and the wires to overheat during operation, potentially leading to a fire or equipment damage.

[0024] In some technical solutions, support rollers 32 are rotatably installed on both sides inside the dial box 21. The two sets of support rollers 32 are movably connected to the two sets of protective bags 23, which can support the protective bags 23.

[0025] In this technical solution, when the operator screws on the handle 3 on the outside of the dial box 21, the take-up roller 22 inside the dial box 21 can be rotated to take up the protective bags 23 on the two sets of blades 2. This ensures that when the two sets of blades 2 are connected to the blade clamp 15, the protective bags 23 are rolled up to one end of the blades 2. At the same time, in conjunction with the support rollers 32 that are rotatably installed on both sides inside the dial box 21, the two sets of protective bags 23 can be efficiently supported and pulled, ensuring that the two sets of protective bags 23 are rolled up by the take-up roller 22 at the same time.

[0026] In some technical solutions, two sets of equidistant positioning posts 34 are fixedly installed on both sides inside the switch 1. The two sets of springs 33 are fixedly installed on both sides of the positioning posts 34 and the side wall of the take-up box 24, respectively, so that the take-up box 24 can automatically reset after rotation.

[0027] In this technical solution, when the two sets of blades 2 slowly rotate around the blade holder 14, the spring 33 in the rotation protection mechanism will pull the take-up box 24 to automatically reset, and the extended pull rope will be stored in the take-up box 24. When the pull rope continuously retracts, it will simultaneously pull the guide cover 31 and the protective bag 23 to move along the direction of the pull rope retraction, ensuring that the protective bag 23 can be completely fitted onto the outside of the blade 2.

[0028] In some technical solutions, guide covers 31 are fixedly installed at one end of each of the two sets of protective bags 23. The two sets of guide covers 31 are movably connected to the two sets of blades 2 respectively. The two sets of guide covers 31 are fixedly installed at one end of each of the two sets of pull ropes, which can guide the protective bags 23.

[0029] In this technical solution, when the protective bag 23 is movably connected to the outside of the blade 2, it can not only stably extend and retract the protective bag 23 in conjunction with the guide cover 31, but also has a good insulation effect.

[0030] In some technical solutions, knife clips 15 are fixedly installed on both sides of the other end inside the switch 1. The two sets of knife clips 15 correspond to the two sets of blades 2 respectively, which can ensure that the switch 1 is closed and opened.

[0031] In this technical solution, the operator holds the dial box 21 and slowly rotates it. The dial box 21 can drive the two sets of blades 2 to rotate around the blade holder 14. After the two sets of blades 2 and the two sets of blade clips 15 are engaged with each other, it can be ensured that the blade clips 15 and the terminal 12 are electrically connected through the blades 2, so that the current can flow normally and power supply can be completed.

[0032] When using a rotary operating mechanism for a distribution box knife switch, it should be noted that this utility model is a rotary operating mechanism for a distribution box knife switch. All components are general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0033] In use, the operator first holds the dial box 21 and slowly rotates it. The dial box 21 drives the two sets of blades 2 to rotate around the blade holder 14. After the two sets of blades 2 and the two sets of blade clips 15 engage, the blade clips 15 and the terminal block 12 are electrically connected through the blades 2, allowing current to flow normally and power to be supplied. At the same time, when the operator disconnects the power to switch 1, rotating the dial box 21 in the opposite direction will disengage the two sets of blades 2 from the two sets of blade clips 15. As the two sets of blades 2 slowly rotate around the blade holder 14, the spring 33 in the rotation protection mechanism will pull the take-up box 24 to automatically reset, retracting the extended pull rope into the take-up box 24. As the pull rope continuously retracts, it will simultaneously pull the guide cover 31 and the protective bag 23 to move along the direction of the pull rope retraction, ensuring the protective bag... 23 can be completely fitted onto the outside of the blade 2, preventing the blade 2 from being exposed to the outside environment for a long time and rusting, which would increase the contact resistance and cause the blade 2 and the wire to overheat during operation, potentially causing a fire or equipment damage. At the same time, support rollers 32 are rotatably installed on both sides inside the dial box 21, and the two sets of support rollers 32 are movably connected to the two sets of protective bags 23 respectively. When the operator screws the handle 3 on the outside of the dial box 21, the winding roller 22 inside the dial box 21 can be rotated to wind up the protective bags 23 on the two sets of blades 2. This ensures that when the two sets of blades 2 are connected to the blade clamp 15, the protective bags 23 are wound up to one end of the blade 2. At the same time, in conjunction with the support rollers 32 rotatably installed on both sides inside the dial box 21, the two sets of protective bags 23 can be efficiently supported and pulled, ensuring that the two sets of protective bags 23 are wound up by the winding roller 22 at the same time.

Claims

1. A rotary operating mechanism for a distribution box knife switch, comprising a switch (1), characterized in that: The switch (1) has connecting bolts (11) fixedly installed in the middle of both sides inside. The switch (1) has terminals (12) fixedly installed in both sides of one end inside. Both sets of terminals (12) have fuses (13) fixedly installed in one end. Both sets of fuses (13) have knife holders (14) fixedly installed in the other side. Both sets of knife holders (14) have blades (2) rotatably installed on them. Both sets of blades (2) have rotation protection mechanisms installed on them. The rotation protection mechanism includes a dial box (21) fixedly installed at the other end of both sets of blades (2), a take-up roller (22) rotatably installed in the middle inside the dial box (21), two sets of protective bags (23) wrapped around the outer wall of the take-up roller (22), a take-up box (24) rotatably installed on one side of both sets of blade holders (14), a spring (33) installed inside both sets of take-up boxes (24), and a pull rope wrapped around the outer wall of both sets of take-up boxes (24). A handle (3) is fixedly installed at one end of the central shaft of the take-up box (24).

2. The distribution box knife switch rotary operating mechanism according to claim 1, characterized in that: The other ends of the two sets of pull ropes are respectively fixedly installed to one end of the two sets of protective bags (23), and the two sets of protective bags (23) are respectively sleeved on the outer wall of the two sets of blades (2).

3. The rotary operating mechanism for a distribution box knife switch according to claim 1, characterized in that: Both sides of the other end of the switch (1) are fixedly installed with blade clips (15), and the two sets of blade clips (15) correspond to the two sets of blades (2) respectively.

4. The rotary operating mechanism for a distribution box knife switch according to claim 1, characterized in that: Each of the two sets of protective bags (23) has a guide cover (31) fixedly installed at one end. The two sets of guide covers (31) are movably connected to the two sets of blades (2) respectively. The two sets of guide covers (31) are fixedly installed at one end of the two sets of pull ropes respectively.

5. The rotary operating mechanism for a distribution box knife switch according to claim 1, characterized in that: The inside of the dial box (21) is rotatably mounted on both sides with support rollers (32), and the two sets of support rollers (32) are respectively movably connected to the two sets of protective bags (23).

6. The rotary operating mechanism for a distribution box knife switch according to claim 1, characterized in that: The switch (1) has two sets of equidistant positioning posts (34) fixedly installed on both sides inside. The two sets of springs (33) are fixedly installed on both sides of the positioning posts (34) and the side wall of the take-up box (24).

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