Insulating clamp for fuse type disconnecting switch

Abstract

An insulating clamp for a fuse type disconnecting switch belongs to the technical field of equipment applied by electricians and comprises an outer limiting plate and at least two inner clamp heads, the inner clamp heads are respectively a left clamp head and a right clamp head, the left clamp head and the right clamp head are respectively provided with a handle and a clamp opening, the lower end of the handle and the upper end of the clamp opening are integrally formed, and the outer limiting plate is arranged on the outer limiting plate. A connecting plate is arranged between the lower end of the handle and the upper end of the clamping opening. The connecting plate of the left tong head and the connecting plate of the right tong head coincide front and back and are rotationally installed together. A forward-concave mounting groove is formed in the rear side end of the connecting plate of the left clamp head, a backward-concave mounting groove A is formed in the front side end of the connecting plate of the left clamp head, and the mounting groove and the mounting groove A are rotationally overlapped together. The lower ends of the clamping openings of the left plier head and the right plier head and the two inner sides of the limiting plate can respectively clamp the two protective plates, and the switch partition plate is vertically upwards separated from the shell of the fuse type disconnecting switch, so that the probability of damage to the protective plates due to clamping, trepanning and slipping is reduced, convenience is brought to workers, and the working efficiency is correspondingly improved. The utility model has a good prospect.

Description

Technical Field

[0001] This utility model relates to the field of power maintenance equipment technology, and in particular to an insulating clamp for a fuse-type disconnect switch. Background Technology

[0002] A fuse-type disconnect switch is an electrical device that combines the functions of a disconnect switch and a fuse. It is mainly used in low-voltage power distribution systems to achieve both circuit isolation and overload or short-circuit protection. Its core functions include: (1) Circuit isolation: disconnecting the circuit in the absence of current to form a visible break point for equipment maintenance or repair. (2) Overload / short-circuit protection: the built-in fuse melts when there is an overload or short circuit, cutting off the faulty circuit and preventing equipment damage or fire risk.

[0003] The switch plate is an internal component of a fuse-type disconnecting switch. Typically made of insulating material, it supports and protects the internal components of the switch, preventing dangerous phenomena such as electric arcing. It is usually installed inside the switch housing via a plug-in connection. The switch plate has two clamping bars in the middle, primarily for clamping, and protective plates on both sides for auxiliary support. When internal components of a fuse-type disconnecting switch (including those mounted on the switch plate) malfunction, the switch plate usually needs to be removed using pliers for repair. In existing technology, workers use needle-nose pliers to grip the two clamping bars of a switch partition and remove it from the housing. This method has drawbacks. Because the two jaws of the needle-nose pliers grip the clamping bars inwards, the entire clamping force is concentrated on the clamping bars, increasing the risk of damage if the force is too great. Furthermore, since only the inner side of the jaws applies force to the clamping bars, the clamping force is relatively limited. The smooth inner surface of the clamping bars also increases the risk of slippage between the gripping tool and the clamping bars. (Uneven force when gripping one of the two partitions makes it difficult to apply force firmly, increasing the risk of damage to the partition, and it's also inconvenient to pull the switch partition vertically upwards.) Therefore, this method is inconvenient for workers and hinders work efficiency. In conclusion, it is essential to provide a clamp that can effectively grip switch partitions. Utility Model Content

[0004] To overcome the drawbacks of existing fuse-type disconnect switches, such as the lack of a suitable tool for handling the switch plates and the inconvenience and inefficiency caused by using needle-nose pliers, this utility model provides an insulating clamp for fuse-type disconnect switches. Through the combined action of related structures, the inner clamp head and outer limiting plate apply a balanced clamping force to the two guard plates of the switch plate, vertically separating the switch plate from the fuse-type disconnect switch housing. This reduces the chances of damaging the guard plates and clamp bars, as well as slippage, providing convenience for workers and correspondingly improving work efficiency.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] An insulating clamp for a fuse-type disconnecting switch includes an outer limiting plate and inner clamp heads. The lower end of the limiting plate has an open structure, and the upper end of the limiting plate has a shaft hole. The inner clamp heads have at least two parts, namely a left clamp head and a right clamp head. The left and right clamp heads each have a handle and a jaw. The lower end of the handle and the upper end of the jaw are integrally formed. There is a connecting plate between the lower end of the handle and the upper end of the jaw. The connecting plates of the left and right clamp heads are rotatably mounted together with their front and rear ends overlapping. The upper ends of the handles and the lower ends of the jaws of the left and right clamp heads are at the same height. The lower ends of the jaws of the left and right clamp heads are higher than the height of the lower ends of the limiting plate on both sides. The rear end of the connecting plate of the left clamp head has a forward-recessed mounting groove, and the front end of the connecting plate of the left clamp head has a backward-recessed mounting groove A. The mounting grooves and mounting groove A are rotatably overlapped. The handles and jaws of the left and right clamp heads and the front and rear ends of the limiting plate are respectively in a vertical plane.

[0007] Furthermore, anti-slip teeth are distributed on the outer sides of the upper and lower ends of the handles of the left and right clamps, respectively.

[0008] Furthermore, the left clamp head, right clamp head, and limiting plate are made of plastic, but any insulating material can also be used.

[0009] Furthermore, the lower two sides of the limiting plate have an inclined structure, and above the inclined surface, the inner sides of the lower two ends of the limiting plate have anti-slip teeth A.

[0010] Furthermore, the distance between the inner two sides of the lower end of the limiting plate is greater than the width of the lower two sides of the protective plate of the fuse-type disconnect switch partition.

[0011] Compared with existing technologies, the advantages of this invention are as follows: When using this invention, the operator uses their hands to place the lower ends of the jaws of the left and right pliers onto the inner ends of the left and right side guard plates of the switch partition. The inner sides of the limiting plate are located at the inner ends of the two guard plates respectively. Then, the operator closes the handles of the left and right pliers inward. In this way, the lower ends of the jaws of the left and right pliers and the inner sides of the limiting plate will clamp the two guard plates respectively, and vertically separate the switch partition from the outer shell of the fuse-type disconnect switch. This reduces the chance of damaging the guard plates, creating holes, and slipping, bringing convenience to the operator and correspondingly improving work efficiency. In summary, this invention has good application prospects. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the switch plate structure of a fuse-type disconnect switch. Detailed Implementation

[0015] Figure 1 , 2 As shown, an insulating clamp for a fuse-type disconnect switch includes an outer limiting plate 1 and inner clamp heads. The lower end of the limiting plate 1 is an open structure 101, and the upper end of the limiting plate has a shaft hole in the middle and a concave structure 102 in the front part of the upper end. There are two inner clamp heads, namely a left clamp head 2 and a right clamp head 3. The left clamp head 2 and the right clamp head 3 respectively have a handle 21 (31) and a jaw 22 (32). The lower end of the handle 21 (31) and the upper end of the jaw 22 (32) are integrally formed. There is a circular connecting plate 23 (33) at the lower end of the handle 21 (31) and the upper end of the jaw 22 (32). The middle part of the connecting plate 23 (33) has The shaft hole A, the left jaw 2 and the right jaw 3 overlap front and back, and their shaft hole A and the upper shaft hole of the limiting plate 1 are installed together by rotating the shaft rod; the upper end of the handle and the lower end of the jaw of the left jaw 2 and the right jaw 3 are at the same height, and the lower end of the jaw of the left jaw and the right jaw are slightly higher than the lower end of the limiting plate on both sides. The rear end of the connecting plate of the left jaw 2 has a front-recessed circular mounting groove, and the front end of the connecting plate of the right jaw 3 has a rear-recessed circular mounting groove A. The mounting groove and the mounting groove A overlap when rotated. The handle 21 (31), jaw 22 (32) of the left jaw 2 and the right jaw 3 and the front and rear ends of the limiting plate 1 are respectively in a vertical plane.

[0016] Figure 1 , 2As shown, anti-slip teeth are distributed on the upper end of the handle and the lower outer side of the jaws of the left clamp head 2 and right clamp head 3. The left clamp head 2, right clamp head 3, and limiting plate 1 are made of plastic, but any insulating material can also be used. The lower two sides of the limiting plate 1 have a sloping structure, and anti-slip teeth A are located on the inner sides of the lower ends of the limiting plate 1 above the sloping surfaces. The distance between the lower inner sides of the limiting plate 1 is greater than the width of the lower sides of the guard plate of the switch partition 4 of the fuse-type disconnecting switch.

[0017] Figure 1 , 2 As shown, when using this new type of device, the operator uses their hands to place the lower ends of the jaws of the left clamp head 2 and the right clamp head 3 onto the inner ends of the left and right side guard plates 41 of the switch partition. The inner sides of the limiting plate 1 are located at the inner ends of the two guard plates 41 respectively. Then, the operator closes the handles of the left clamp head 2 and the right clamp head 3 inward. In this way, the lower ends of the jaws of the left clamp head 2 and the right clamp head 3, as well as the inner sides of the limiting plate 1, will clamp the two guard plates 41 respectively (the two guard plates 41 are in close contact with the inner sides of the limiting plate 1 and the inner sides of the left and right clamp heads), and the switch partition will be vertically separated from the outer shell of the fuse-type disconnect switch. This reduces the chance of damaging the guard plates 41 and the clamp bars, as well as slippage, bringing convenience to the operator and correspondingly improving work efficiency.

[0018] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0019] Furthermore, it should be understood that although this specification describes the embodiments, the embodiments do not necessarily contain only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An insulating clamp for a fuse-type disconnector switch, comprising an outer limiting plate and an inner clamp head, characterized in that, The lower end of the limiting plate has an open structure, and the upper end of the limiting plate has a shaft hole. There are at least two inner jaws, namely a left jaw and a right jaw. The left jaw and the right jaw each have a handle and a jaw. The lower end of the handle and the upper end of the jaw are integrally formed. There is a connecting plate between the lower end of the handle and the upper end of the jaw. The connecting plates of the left jaw and the right jaw are rotatably mounted together with front and back overlap. The upper end of the handle and the lower end of the jaw of the left jaw and the right jaw are at the same height. The lower end of the jaw of the left jaw and the right jaw are higher than the height of the lower end of the limiting plate on both sides. The rear end of the connecting plate of the left jaw has a forward-recessed mounting groove, and the front end of the connecting plate of the left jaw has a backward-recessed mounting groove A. The mounting grooves and mounting groove A are rotatably overlapped. The handles and jaws of the left jaw and the front and rear ends of the limiting plate are respectively on the same vertical plane.

2. An insulating clamp for a fuse-type disconnector according to claim 1, characterized in that, Anti-slip teeth are distributed on the upper and lower outer sides of the handles of the left and right pliers.

3. An insulating clamp for a fuse-type disconnector according to claim 1, characterized in that, The left and right jaws and the limit plate are made of plastic, but any insulating material can also be used.

4. An insulating clamp for a fuse-type disconnector according to claim 1, characterized in that, The lower sides of the limiting plate have an inclined structure, and above the inclined surface, the inner sides of both ends of the lower limiting plate have anti-slip teeth A.

5. An insulating clamp for a fuse-type disconnector according to claim 1, characterized in that, The distance between the inner sides of the lower end of the limit plate is greater than the width of the lower sides of the protective plate of the fuse-type disconnect switch.

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