Fall protection limiting installation device
By installing a limit stop at the lower end of the drop-out safety ring to limit its rotation angle, the problem of grounding faults caused by collisions between the drop-out safety ring and the tower is solved, thus improving line safety.
Patent Information
- Application Number
- CN202422676209.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-04
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-11-04
AI Technical Summary
The drop-out fuse caused a grounding fault when it collided with the tower after falling, leading to a tripping of the collector line.
A drop protection limiting installation device was designed, including a drop protection ring, a connecting block, a limiting pin, a rotating shaft, a support body, and a limiting baffle. By installing a limiting baffle at the lower end of the drop protection ring, its rotation angle is limited to avoid collision with the tower.
This design limits the rotation of the drop arrestor within a safe range, preventing collisions with the tower, improving line safety, and preventing grounding faults.
Smart Images
Figure CN223625540U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drop protection technology, specifically to a drop protection limiting installation device. Background Technology
[0002] Power system lines are equipped with many drop-out fuses. According to relevant statistics in daily work, it has been found that after a drop-out fuse falls, it rotates around its axis under the action of gravity. During the rotation, it is easy to collide with the tower components, causing the collector line to trip.
[0003] According to the principle of drop-out protection, when the fuse blows, the tension of the fuse disappears, the upper contact slips off the latch, and the fuse falls around its axis due to its own weight, thus colliding with the tower. The high-voltage side of the transformer substation is a delta connection. Because the drop-out fuse is electrically conductive during the fall, the collision between the drop-out fuse and the tower causes a ground fault, triggering the tripping of the collector line. Utility Model Content
[0004] This utility model provides a drop protection limit installation device, which solves the problem that existing drop protection devices cause grounding faults and tripping of the collector line after falling and colliding with the tower.
[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:
[0006] A drop protection limiting installation device includes a drop safety ring, a connecting block, a limiting pin, a rotating shaft, a bracket body, and a limiting stop plate. The drop safety ring has a first fixing hole and a locking hole on its circumferential surface. One end of the limiting stop plate is connected to the drop safety ring. One side of one end of the bracket body has protruding and upwardly curved hooks. The two opposite side faces of the connecting block are respectively provided with a limiting pin and a rotating shaft. The connecting block is rotatably mounted on the bracket body via the rotating shaft. The limiting pin is located on the rotation trajectory of the hooks and can limit the rotation of the connecting block. The drop safety ring is rotatably connected to the bracket body via the connecting block. The limiting stop plate is a strip structure with multiple bending angles. One end of the limiting stop plate has a second fixing hole. One end of the limiting stop plate is fixedly mounted on the drop safety ring, and the other end of the limiting stop plate can abut against the lower end face of the bracket body.
[0007] The beneficial effect of this utility model is that by installing a limiting baffle at the lower end of the drop-out safety ring, the drop-out safety is blocked from falling in the necessary path of the drop-out safety ring, thus limiting the drop-out safety ring to a safe range. This achieves the function of having a mechanical limiting structure, which can limit the rotation angle of the drop-out safety ring within a safe range, avoid the drop-out safety ring from colliding with the tower and causing grounding faults, and increase the safety factor of the line.
[0008] Based on the above technical solution, the present invention can be further improved as follows.
[0009] Furthermore, a limiting pin is provided on each of the two opposite side end faces of the connecting block. One end of the limiting pin is fixed to the end face of the connecting block, and the other end of the limiting pin protrudes from the end face of the connecting block.
[0010] The beneficial effect of adopting the above-mentioned further solution is that by setting a limiting pin on each of the two opposite side end faces of the connecting block to limit the hook of the bracket body, the limiting pin limits the angle of rotation of the hook when it rotates, thereby limiting the rotation angle of the bracket body.
[0011] Furthermore, a pivot is provided on the inner side of the hook of the support body, and a connecting block is provided on the inner side of the support body. The connecting block is rotatably connected to the support body through the pivot.
[0012] The beneficial effect of adopting the above-mentioned further solution is that a pivot is provided on the inner side of the hook of the support body, so that the connecting block rotates around the pivot with the pivot as the pivot point. This makes the connecting block and the support body form a rotatable connection.
[0013] Furthermore, the hook of the main body of the bracket is movably positioned between the limit pin and the rotating shaft.
[0014] The beneficial effect of adopting the above-mentioned further solution is that the hook of the bracket body is movably set between the limiting pin and the rotating shaft, so that when the connecting block rotates around the rotating shaft with the rotating shaft as the rotation point, the hook is locked between the limiting pin and the rotating shaft for limiting.
[0015] Furthermore, locking holes are symmetrically opened on the circumference of the drop-out safety ring, and both locking holes have internal threads and are screwed to the locking bolts.
[0016] The beneficial effect of adopting the above-mentioned further solution is that two locking holes are symmetrically opened on the circumference of the drop safety ring. This allows the drop safety fuse tube to be inserted into the drop safety ring, and then locked by screwing a locking bolt into the locking hole, thus fixing one end of the drop safety fuse tube to the drop safety ring. This prevents the drop safety fuse tube from falling down, and it will rotate around the pivot.
[0017] Furthermore, one end of the drop safety fuse is inserted into the drop safety retaining ring and fixed inside the drop safety retaining ring by a locking bolt passing through two symmetrically arranged locking holes.
[0018] The beneficial effect of adopting the above-mentioned further solution is that after one end of the drop-out safety fuse is inserted into the drop-out safety retaining ring, it can be locked by screwing the locking bolt into the locking hole, thus fixing one end of the drop-out safety fuse to the drop-out safety retaining ring. To prevent the drop-out safety fuse from falling down, the drop-out safety fuse will rotate around the pivot.
[0019] Furthermore, the limiting baffle is made of metal, and its structure has an elastic function.
[0020] The beneficial effect of adopting the above-mentioned further solution is that the drop fuse tube and the drop fuse tube retaining ring rotate together around the pivot. During the drop, one end of the limiting baffle contacts the lower end face of one side of the support body. Because the limiting baffle is made of a metal with elastic properties, it cushions the rotation of the drop fuse tube, causing the drop fuse tube to stop moving and thus maintaining a certain safe distance from the tower.
[0021] Furthermore, the bending angle of the limiting stop can be changed.
[0022] The beneficial effect of adopting the above-mentioned further solution is that the limiting baffle is a strip structure with multiple bending angles, and the bending angle of the limiting baffle can be changed. This buffers the drop-out fuse during its rotation, causing the drop-out fuse to stop moving, thereby maintaining a certain safe distance from the tower.
[0023] Furthermore, two first fixing holes are provided on the circumferential surface of the drop safety ring, and two second fixing holes are provided on one end strip of the limiting plate. The fixing bolt passes through the two second fixing holes and the two first fixing holes in sequence to fix the limiting plate to the drop safety ring.
[0024] The beneficial effect of adopting the above-mentioned further solution is that one end of the limiting stop plate is fixedly connected to the drop-out fuse clasp. When the drop-out fuse falls, one end of the limiting stop plate rotates around the pivot along with the drop-out fuse clasp. When the other end of the limiting stop plate abuts against the lower end face of the support body, the limiting stop plate acts as a buffer during the rotation of the drop-out fuse tube, causing the drop-out fuse tube to stop moving, thereby maintaining a certain safe distance from the tower. This avoids grounding faults caused by collisions between the drop-out fuse and the tower, increasing the safety factor of the line.
[0025] Furthermore, the middle strip of the limiting baffle forms an angle of 120°±20° with the strip with the second fixing hole, and the middle strip of the limiting baffle forms an angle of 90°±20° with the strip at the other end.
[0026] The beneficial effect of adopting the above-mentioned further solution is that the middle strip of the limiting stop plate forms an angle of 120°±20° with the strip plate with the second fixing hole, and the middle strip of the limiting stop plate forms an angle of 90°±20° with the strip plate at the other end. When the drop fuse falls, one end of the limiting stop plate rotates around the pivot along with the drop fuse retainer. When the other end of the limiting stop plate abuts against the lower end face of the support body, the limiting stop plate buffers the rotation of the drop fuse tube by changing the angle between the strip plates. This stops the drop fuse tube from moving, thus maintaining a certain safe distance from the tower. This avoids grounding faults caused by collisions between the drop fuse and the tower, increasing the safety factor of the line. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the structure of a drop protection limiting installation device according to the present invention;
[0028] Figure 2 This is a schematic diagram of the structure of the limiting baffle support bracket of the drop protection limiting installation device of this utility model. Figure 1 ;
[0029] Figure 3 This is a schematic diagram of the structure of the limiting baffle support bracket of the drop protection limiting installation device of this utility model. Figure 2 ;
[0030] Figure 4 This is a schematic diagram of the structure of the limiting baffle of this utility model.
[0031] The components represented by each number in the attached diagram are as follows: 1-Drop safety retaining ring; 2-Locking hole; 3-Connecting block; 4-Limit pin; 5-Rotating shaft; 6-Bracket body; 7-Fixing bolt; 8-Limit stop plate; 9-Drop safety fuse tube. Detailed Implementation
[0032] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.
[0033] Example 1
[0034] like Figure 1-4As shown, a drop protection limiting installation device includes a drop safety ring 1, a connecting block 3, a limiting pin 4, a rotating shaft 5, a bracket body 6, and a limiting baffle 8. The drop safety ring 1 has a first fixing hole and a locking hole 2 on its circumferential surface. One end of the limiting baffle 8 is connected to the drop safety ring 1. One side of one end of the bracket body 6 has protruding and upwardly curved hooks. The two opposite side ends of the connecting block 3 are respectively provided with the limiting pin 4 and the rotating shaft 5. The connecting block 3 is rotatably mounted on the bracket body 6 through the rotating shaft 5. The limiting pin 4 is located on the rotation trajectory of the hook and can limit the rotation of the connecting block 3. The drop safety ring 1 is rotatably connected to the bracket body 6 through the connecting block 3. The limiting baffle 8 is a strip structure with multiple bending angles. One end of the limiting baffle 8 has a second fixing hole. One end of the limiting baffle 8 is fixedly mounted on the drop safety ring 1, and the other end of the limiting baffle 8 can abut against the lower end face of the bracket body 6.
[0035] Specifically, by installing a limiting baffle 8 at the lower end of the drop-out safety ring 1, the drop-out safety is blocked from falling along its inevitable path, thus limiting the drop-out safety within a safe range. This achieves the function of having a mechanical limiting structure, which can limit the rotation angle of the drop-out safety within a safe range, avoid the drop-out safety from colliding with the tower and causing grounding faults, and increase the safety factor of the line.
[0036] like Figure 1-4 As shown, a limiting pin 4 is provided on each of the two opposite side end faces of the connecting block 3. One end of the limiting pin 4 is fixed to the end face of the connecting block 3, and the other end of the limiting pin 4 protrudes from the end face of the connecting block 3.
[0037] Specifically, a limiting pin 4 is respectively provided on the two opposite side ends of the connecting block 3 to limit the hook of the bracket body 6, so that when the hook rotates, the limiting pin 4 limits the angle of rotation of the hook, thereby limiting the rotation angle of the bracket body 6. In this embodiment, one end of the limiting pin 4 is fixedly connected to the side of the connecting block 3, and the other end of the limiting pin 4 protrudes from the side of the connecting block 3, thereby limiting the hook of the bracket body 6. Alternatively, the limiting pin 4 can also pass through the connecting block 3 and form protrusions on the two sides of the connecting block 3 to limit the hook of the bracket body 6.
[0038] like Figure 1-4 As shown, a rotating shaft 5 is provided on the inner side of the hook of the bracket body 6, and a connecting block 3 is provided on the inner side of the bracket body 6. The connecting block 3 is rotatably connected to the bracket body 6 through the rotating shaft 5.
[0039] Specifically, a pivot 5 is provided inside the hook of the support body 6, and the connecting block 3 rotates around the pivot 5 as a pivot point. Thus, the connecting block 3 and the support body 6 rotate. In this embodiment, one end of the pivot 5 is rotatably disposed on the side of the connecting block 3, and the other end of the pivot 5 is disposed inside the hook of the support body 6. The connecting block 3 rotates around the pivot 5 as an axis. Alternatively, the pivot 5 can also pass through the connecting block 3 and protrude from both sides of the connecting block 3, thus limiting the hook of the support body 6.
[0040] like Figure 1-4 As shown, the hook of the bracket body 6 is movably positioned between the limit pin 4 and the rotating shaft 5.
[0041] Specifically, the hook of the bracket body 6 is movably set between the limiting pin 4 and the rotating shaft 5, so that when the connecting block 3 rotates around the rotating shaft 5 with the rotating shaft 5 as the rotation point, the hook is locked between the limiting pin 4 and the rotating shaft 5 for limiting.
[0042] like Figure 1-4 As shown, locking holes 2 are symmetrically opened on the circumferential surface of the drop safety ring 1. Both locking holes 2 have internal threads and are screwed to the locking bolts.
[0043] Specifically, two locking holes 2 are symmetrically formed on the circumference of the drop safety ring 1. After one end of the drop safety fuse tube 9 is inserted into the drop safety ring 1, it can be locked by screwing a locking bolt into the locking hole 2, thus fixing one end of the drop safety fuse tube 9 onto the drop safety ring 1. To prevent the drop safety fuse tube 9 from falling down, the drop safety fuse tube 9 will rotate around the rotating shaft 5.
[0044] like Figure 1-4 As shown, one end of the drop safety fuse tube 9 is inserted into the drop safety retaining ring 1 and fixed in the drop safety retaining ring 1 by a locking bolt passing through two symmetrically arranged locking holes 2.
[0045] Specifically, after one end of the drop safety fuse tube 9 is inserted into the drop safety retaining ring 1, it can be locked by screwing the locking bolt into the locking hole 2, thus fixing one end of the drop safety fuse tube 9 onto the drop safety retaining ring 1. To prevent the drop safety fuse tube 9 from falling, it will rotate around the rotating shaft 5.
[0046] like Figure 1-4 As shown, the limiting baffle 8 is made of metal, and the limiting baffle 8 has an elastic structure.
[0047] Specifically, the drop fuse 9 and the drop fuse retainer 1 rotate together around the pivot 5. During the drop, one end of the limiting baffle 8 contacts the lower end face of one side of the support body 6. Because the limiting baffle 8 is made of a metal with elastic properties, it cushions the rotation of the drop fuse 9, causing the drop fuse 9 to stop moving and thus maintaining a certain safe distance from the tower.
[0048] like Figure 1-4 As shown, the bending angle of the limiting baffle 8 can be changed.
[0049] Specifically, the limiting baffle 8 is a strip structure with multiple bending angles, and the bending angle of the limiting baffle 8 can be changed. This buffers the drop safety fuse 9 during its rotation, causing the drop safety fuse 9 to stop moving, thereby maintaining a certain safe distance from the tower.
[0050] like Figure 1-4 As shown, two first fixing holes are provided on the circumferential surface of the drop safety ring 1, and two second fixing holes are provided on one end strip of the limiting baffle 8. The fixing bolt 7 passes through the two second fixing holes and the two first fixing holes in sequence to fix the limiting baffle 8 to the drop safety ring 1.
[0051] Specifically, one end of the limiting plate 8 is fixedly connected to the drop-out safety ring 1. When the drop-out safety is released, one end of the limiting plate 8 rotates around the pivot 5 along with the drop-out safety ring 1. When the other end of the limiting plate 8 abuts against the lower end face of the support body 6, the limiting plate 8 acts as a buffer during the rotation of the drop-out safety fuse tube 9, causing the drop-out safety fuse tube 9 to stop moving, thereby maintaining a certain safe distance from the tower. This prevents the drop-out safety from colliding with the tower and causing a grounding fault, thus increasing the safety factor of the line.
[0052] like Figure 1-4 As shown, the middle strip of the limiting baffle 8 forms an angle of 120°±20° with the strip with the second fixing hole, and the middle strip of the limiting baffle 8 forms an angle of 90°±20° with the strip at the other end.
[0053] Specifically, the middle strip of the limiting plate 8 forms an angle of 120°±20° with the strip with the second fixing hole, and the middle strip of the limiting plate 8 forms an angle of 90°±20° with the strip at the other end. When the drop fuse falls, one end of the limiting plate 8 rotates around the shaft 5 along with the drop fuse retainer 1. When the other end of the limiting plate 8 abuts against the lower end face of the support body 6, the limiting plate 8 buffers the rotation of the drop fuse fuse tube 9 by changing the angle between the strips. This stops the drop fuse fuse tube 9 from moving, thus maintaining a safe distance from the tower. This prevents the drop fuse from colliding with the tower and causing a grounding fault, increasing the safety factor of the line.
[0054] The beneficial effects of this embodiment are: by installing a limiting baffle 8 at the lower end of the drop-out safety ring 1, the drop-out safety ring's falling action is blocked on its inevitable path, limiting the drop-out safety ring to a safe range. This achieves the function of having a mechanical limiting structure, which can limit the rotation angle of the drop-out safety ring within a safe range, avoid the drop-out safety ring colliding with the tower and causing grounding faults, and increase the line safety factor.
[0055] The working process of this embodiment is as follows: the connecting block 3 rotates around the pivot 5 and the support body 6. When the drop fuse falls, one end of the limiting plate 8 rotates around the pivot 5 along with the drop fuse retainer 1. When the other end of the limiting plate 8 abuts against the lower end face of the support body 6, the limiting plate 8 buffers the rotation of the drop fuse tube 9 by changing the angle between the plates. This stops the drop fuse tube 9 from moving, thus maintaining a certain safe distance from the tower. This prevents the drop fuse from colliding with the tower and causing a grounding fault, increasing the safety factor of the line.
[0056] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0057] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0059] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. A drop protection limiting device, characterized in that, The system includes a drop safety ring (1), a connecting block (3), a limiting pin (4), a rotating shaft (5), a support body (6), and a limiting stop plate (8). The drop safety ring (1) has a first fixing hole and a locking hole (2) on its circumferential surface. The two sides of one end of the support body (6) have protruding hooks that are bent upwards. The two opposite side ends of the connecting block (3) are respectively provided with a limiting pin (4) and a rotating shaft (5). The connecting block (3) is rotatably mounted on the support body (6) through the rotating shaft (5). Above, the limiting pin (4) is located on the rotation trajectory of the hook. The limiting pin (4) can limit the rotation of the connecting block (3). The drop safety ring (1) is rotatably connected to the bracket body (6) through the connecting block (3). The limiting baffle (8) is a strip structure with multiple bending angles. A second fixing hole is opened on one end of the strip of the limiting baffle (8). One end of the limiting baffle (8) is fixedly set on the drop safety ring (1). The other end of the limiting baffle (8) can abut against the lower end face of the bracket body (6).
2. A drop protection limiting device according to claim 1, characterized in that, A limiting pin (4) is provided on each of the two opposite side end faces of the connecting block (3). One end of the limiting pin (4) is fixed to the end face of the connecting block (3), and the other end of the limiting pin (4) protrudes out of the end face of the connecting block (3).
3. A drop protection limiting device according to claim 1, characterized in that, A pivot (5) is provided on the inner side of the hook of the support body (6), and a connecting block (3) is provided on the inner side of the support body (6). The connecting block (3) is rotatably connected to the support body (6) through the pivot (5).
4. A drop protection limiting device according to claim 3, characterized in that, The hook of the bracket body (6) is movably positioned between the limit pin (4) and the rotating shaft (5).
5. A drop protection limiting device according to claim 1, characterized in that, The locking holes (2) are symmetrically opened on the circumferential surface of the drop safety ring (1). Both locking holes (2) have internal threads and are screwed to the locking bolts.
6. A drop protection limiting installation device according to claim 5, characterized in that, One end of the drop safety fuse tube (9) is inserted into the drop safety retaining ring (1) and fixed in the drop safety retaining ring (1) by passing through two symmetrically arranged locking holes (2) with locking bolts.
7. A drop protection limiting device according to claim 1, characterized in that, The limiting baffle (8) is made of metal and has an elastic structure.
8. A drop protection limiting device according to claim 1, characterized in that, The bending angle of the limiting baffle (8) can be changed.
9. A drop protection limiting device according to claim 1, characterized in that, Two first fixing holes are provided on the circumferential surface of the drop safety ring (1), and two second fixing holes are provided on one end strip of the limiting baffle (8). The fixing bolt (7) passes through the two second fixing holes and the two first fixing holes in sequence to fix the limiting baffle (8) to the drop safety ring (1).
10. A drop protection limiting device according to claim 1, characterized in that, The middle strip of the limiting baffle (8) forms an angle of 120°±20° with the strip with the second fixing hole, and the middle strip of the limiting baffle (8) forms an angle of 90°±20° with the strip at the other end.