A disconnector contact finger assembly tool

Abstract

The application discloses a disconnector contact finger assembly tool. The tool comprises a contact finger positioning assembly for positioning a pre-assembly position of a contact finger body, the contact finger positioning assembly comprises a pre-positioning extension and a positioning member, at least two positioning convex columns are arranged on one side of the pre-positioning extension, a first end of the positioning member is fixedly connected to the side of the pre-positioning extension opposite to the positioning convex columns, and a second end of the positioning member is outwardly overhangingly arranged and uniformly provided with a plurality of positioning blocks. The positioning blocks are clamped into gaps between adjacent contact fingers by arranging the positioning member, the assembly position of the contact finger body is ensured by positioning of the tool, parallelism of the contact finger body assembly is improved, and therefore, when the disconnector is opened and closed, uniformity of contact between the contact fingers and the contact head can be improved, plating layer abrasion during opening and closing of the disconnector can be evenly distributed to each contact position, average service life of the plating layer is improved, stability and quality of the product are improved, assembly efficiency is improved, and production cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of high-voltage switchgear assembly technology, and in particular to a tooling for assembling disconnector switch contacts. Background Technology

[0002] With the rapid development of power systems, the requirements for power grid safety, reliability, and the automation level of electrical switchgear are constantly increasing. The control of key quality points of high-voltage disconnect switches directly affects the safe operation of the entire power grid. The clamping force and circuit resistance of the disconnect switch are two important quality parameters.

[0003] Currently, for high-current models of disconnect switches, the contact fingers are generally assembled manually by adjusting their positions visually. This makes it difficult to guarantee consistent product quality and makes the process overly reliant on the production experience of employees.

[0004] As attached Figure 1 As shown, the high-current model of the GW4 disconnector includes a contact body and a support base. One end of the contact body is connected to the support base so that the contact can be suspended on the support base. The contact body is detachably attached to the support base. The contact body includes multiple contacts, which are arranged at lateral intervals along the support base. There is a gap between two adjacent contacts. Each contact includes a contact element and a contact guard plate. The contact element is detachably connected to the support base, and the contact guard plate is fixedly connected to the outer wall of the contact element. The GW4 disconnector is generally assembled manually by adjusting the position by visual inspection. Poor parallelism between the outer side of the contact finger and the outer side of the conductive arm prevents the contact finger from operating in a relatively parallel relative position during opening and closing of the disconnecting switch. This results in uneven and uncontrolled contact surface during opening and closing, which, over long-term use, easily causes rapid wear of the silver plating layer on the first contacting part, thus reducing the expected service life of the disconnecting switch. If the substation fails to detect the wear of the silver plating layer in time, the contact finger temperature may exceed the threshold during use, leading to failure. Therefore, the standardization and consistency of the pre-assembly position of the contact finger body significantly affects the performance and lifespan of the disconnecting switch. Relying on a wooden hammer or other tools to realign the workpiece inevitably results in situations where it cannot be aligned perfectly in one go, leading to low efficiency in actual production and hindering the promotion of the assembly method. It also affects the overall aesthetic appearance of the disconnecting switch.

[0005] Therefore, it is necessary to propose a tooling for assembling disconnector switch contacts to address the aforementioned deficiencies. Summary of the Invention

[0006] The main objective of this invention is to provide a tooling for assembling disconnector switch contacts, which aims to solve the problem that the low consistency of the pre-assembly position of the contact body caused by the manual assembly of existing contacts leads to accelerated contact wear.

[0007] To achieve the above objectives, the present invention provides a disconnector switch contact assembly tooling, including a contact positioning component for positioning the contact body at a pre-assembly position. The contact positioning component includes a pre-positioning extension and a positioning component. The pre-positioning extension has at least two positioning protrusions on one side. The first end of the positioning component is fixedly connected to the side of the pre-positioning extension opposite to the positioning protrusions. The second end of the positioning component is cantilevered outward and has a plurality of positioning blocks evenly distributed thereon.

[0008] Preferably, the prepositioning extension includes a substrate and a support extension. Two support extensions are disposed opposite each other at both ends of the substrate along its length. At least two positioning protrusions are provided on one side of the substrate. A first end of the support extension is fixedly connected to the substrate. A second end of the support extension extends along the width of the substrate. Both ends of the positioning member are respectively connected to the second end of the corresponding support extension. The positioning member is disposed at the lower part of the support extension. A plurality of positioning blocks are evenly spaced along the length of the positioning member on the lower surface of the positioning member.

[0009] Preferably, the first end of the support extension is detachably connected to the substrate, and the second end of the support extension is detachably connected to the positioning member.

[0010] Preferably, the support extension member includes an extension rod and a pad, the first end of the extension rod is fixedly connected to the base plate, the second end of the extension rod is fixedly connected to one end of the pad, and the other end of the pad is fixedly connected to the end of the positioning member.

[0011] Preferably, the substrate has a positioning groove, a positioning plate is assembled in the positioning groove, and two positioning protrusions are provided on the positioning plate.

[0012] Preferably, the positioning block has a T-shaped cross-section along the transverse direction, the width of the top of the positioning block is smaller than the width of the bottom of the positioning block, and the top of the positioning block is fixedly connected to the positioning component.

[0013] Preferably, the extension rod is fixedly connected to the base plate by bolts, and the extension rod, the pad, and the positioning member are all provided with bolt holes for mutual cooperation, and the extension rod is fixedly connected to the positioning member by bolts.

[0014] Compared with the prior art, the disconnector switch contact finger assembly fixture provided by the present invention has the following beneficial effects:

[0015] The present invention provides a disconnect switch contact finger assembly fixture, in which a pre-positioning extension is disposed on the connecting end of the contact finger body. By setting a positioning element, one end of the positioning element is positioned and assembled on the pre-positioning extension element, and the positioning block is inserted into the gap between adjacent contacts. Relying on the positioning of the fixture, the assembly position of the contact finger body is guaranteed, and the parallelism of the contact finger body assembly is improved. Thus, when opening and closing the circuit, the uniformity of the contact between the contact finger and the contact head can be improved, and the wear of the plating layer during opening and closing can be evenly distributed to each contact position as much as possible, thereby increasing the average service life of the plating layer, improving the stability and quality of the product, improving assembly efficiency, and reducing production costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the disconnector switch contact body in one embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the assembly of the finger assembly fixture and the finger body in one embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the substrate structure in one embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the support extension member in one embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of the positioning element in one embodiment of the present invention;

[0022] Explanation of icon numbers:

[0023] The components include: a finger assembly fixture 100; a finger positioning assembly 200; a pre-positioning extension 210; a base plate 211; a positioning protrusion 2111; a positioning plate 2112; a support extension 212; an extension rod 2121; a pad 2122; a positioning component 220; a positioning block 221; a finger body 300; a finger 310; a finger component 311; a finger guard plate 312; a support base 400; a first support component 410; a mounting hole 411; a second support component 420; and a fixing hole 421.

[0024] The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0028] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0029] Please refer to the appendix. Figures 1-5 The present invention provides a disconnector switch contact assembly fixture 100, including a contact 310 positioning component 200 for positioning the contact body 300 in a pre-assembly position. The contact 310 positioning component 200 includes a pre-positioning extension 210 and a positioning component 220. The pre-positioning extension 210 is provided with at least two positioning protrusions 2111 on one side. The first end of the positioning component 220 is fixedly connected to the side of the pre-positioning extension 210 opposite to the positioning protrusions 2111. The second end of the positioning component 220 is cantilevered outward and evenly provided with a plurality of positioning blocks 221.

[0030] Specifically, the finger 310 positioning assembly 200 is used to position the finger body 300 in its pre-assembly position. The finger 310 positioning assembly 200 includes a pre-positioning extension 210 and a positioning member 220. One end of the pre-positioning extension 210 is provided with at least two positioning protrusions 2111. The positioning protrusions 2111 are used to position and connect with the connection end of the finger body 300 to position the pre-positioning extension 210 on the finger body 300. The first end of the positioning member 220 is fixedly connected to the side of the pre-positioning extension 210 opposite to the positioning protrusions 2111. The pre-positioning extension 210 is used to extend the length of the positioning member 220. The installation length of the positioning member 220 can be adjusted so that the positioning member 220 can be located above the finger body 300, which facilitates the positioning of the finger body 300.

[0031] The second end of the positioning member 220 is provided with a plurality of positioning blocks 221 evenly distributed, and a gap is provided between the plurality of positioning blocks 221. This gap is consistent with the width of each finger 310 of the finger body 300. The width of the positioning block 221 is equal to the gap between each finger 310 of the finger body 300, so that the positioning block 221 can be locked in the gap between the fingers 310, that is, each finger 310 of the finger body 300 can be positioned to ensure the assembly position of the finger body 300.

[0032] For details, please refer to the appendix. Figure 1 This is a high-current model of the GW4 type disconnect switch. The contact finger body 300 is detachably mounted on the support base 400. The contact finger body 300 includes multiple contact fingers 310, with a gap between adjacent contact fingers 310. The support base 400 includes a first support member 410 for supporting the contact finger 310 positioning assembly 200 and a second support member 420 for supporting the contact finger body 300, which are arranged opposite to each other. The first support member 410 and the second support member 420 are integrally formed. The support base has an inverted T-shaped structure. The second support member 420 is provided with multiple fixing holes 421 for fixing the contact finger body 300. The contact finger 310 includes a contact finger member 311 and a contact finger guard plate 312. Corresponding holes are provided on the contact finger guard plate 312 and at the end of the contact finger 310 where the contact finger guard plate 312 is located. Therefore, the contact finger body 300 can be fixed with bolts through the fixing holes 421.

[0033] Fixing holes 421 are provided at both opposite ends of the first support member 410. At least two rows of fixing holes 421 are arranged along the first support member 410 at even intervals. Providing fixing holes 421 at both ends allows for the connection of two rows of contact fingers 310 to the first support member 410, facilitating contact between the contact fingers 310 and the contact head. Arranging the fixing holes 421 in two rows better connects the contact finger bodies 300, preventing the individual contact fingers 310 of the contact finger body 300 from moving laterally, ensuring the assembly position of the contact finger body 300, and making the connection more stable.

[0034] The second support member 420 has multiple mounting holes 411 at both opposite ends. These mounting holes 411 cooperate with the positioning protrusions 2111 to position the installation position of the prepositioning extension member 210, making the connection convenient. Furthermore, the prepositioning extension member 210 enables the positioning member 220 to better position the finger body 300.

[0035] It should be understood that during use, the contact finger 311 and the contact finger guard plate 312 are first fixed to the support base 400 with screws. The screws are not tightened to allow the contact finger 310 to rotate freely to a certain extent. Then, the positioning protrusion 2111 on the pre-positioning extension 210 is engaged with the mounting hole 411 on the support base 400 to position the pre-positioning extension 210 on the support base 400. The position of the positioning member 220 is located at a suitable position above the contact finger body 300. Then, the pre-positioning extension 210 is fixed with bolts, and each contact finger 310 is moved into the positioning member 220. In the various areas between the positioning blocks 221 in 0, the positioning blocks 221 set at the bottom of the positioning component 220 will be inserted into the gap between adjacent fingers 310. The protrusion of the positioning block 221 will be used to position the fingers 310. The bottom of the positioning component 220 itself can also adjust the parallelism of the finger body 300. After adjustment, remove the assembly fixture, tighten the pre-installed screws on each finger 310 in sequence, and then flip the support base 400. Repeat the above steps on the other side to complete the assembly of both sides of the support base 400 and complete the installation of the finger body 300.

[0036] It is worth noting that when tightening the screws on the contact finger 310, the tooling may get stuck in the workpiece, so it may be necessary to remove it from the workpiece before tightening the screws. This may cause the contact finger 310 to rotate to a certain extent. However, in reality, the screws that have been pre-tightened with a pneumatic socket have already basically stabilized the position of the contact finger 310. The rotation angle caused by the torque wrench is quite small, and the resulting error is completely within the performance requirements of the disconnecting switch product and is acceptable.

[0037] It is important to note that the contact assembly fixture 100 is used to standardize the assembly process of the contact fingers 310 of the GW4 type switch. The fixture 100 positions the contact fingers 310, ensuring that the line connecting each contact finger 310 to the fixing hole 421 of the support base 400 is approximately perpendicular. This allows the contact fingers 310 to make ideal contact with the contacts during opening and closing, distributing the wear of the plating as evenly as possible across all contact points. The silver plating layer wears down in a more uniform manner, preventing excessive wear in certain areas that could expose the copper surface. This increases the average lifespan of the plating layer and improves product stability and quality. Furthermore, production staff no longer need to rely on experience or visual judgment to determine the correct pre-assembly position of the contact fingers 310. The fixture's positioning ensures stable assembly of components with roughly consistent positions, facilitating operation and significantly improving the uniformity of batch components. This eliminates inconsistent products, greatly increases assembly efficiency, and reduces production costs. Furthermore, the 100-type contact assembly fixture has a compact structure, avoiding excessively large and heavy fixtures. It fits the actual working conditions of the disconnector switch assembly site, achieving the portability requirements under complex working conditions in actual production. At the same time, the structure is easy to replicate and promote.

[0038] In a preferred embodiment of the present invention, the prepositioning extension member 210 includes a base plate 211 and a support extension member 212. Two support extension members 212 are disposed opposite each other at both ends of the base plate 211 along its length direction. At least two positioning protrusions 2111 are provided on one side of the base plate 211. The first end of the support extension member 212 is fixedly connected to the base plate 211. The second end of the support extension member 212 extends along the width direction of the base plate 211. The two ends of the positioning member 220 are respectively connected to the second ends of the corresponding support extension members 212. The positioning member 220 is disposed at the lower part of the support extension member 212. A plurality of positioning blocks 221 are evenly spaced along the length direction of the positioning member 220 on the lower surface of the positioning member 220.

[0039] In detail, the prepositioning extension 210 is configured to include a base plate 211 and a support extension 212. At least two positioning protrusions 2111 are provided on one side of the base plate 211, and the other side of the base plate 211 is fixedly connected to the first end of the support extension 212. In this embodiment, the positioning protrusions 2111 are provided at the bottom of the base plate 211, and the top of the base plate 211 is connected to the support extension 212. The other end of the support extension 212 extends along the width direction of the base plate 211, i.e., it is positioned towards the finger body 300. Both ends of the positioning member 220 are connected to the second end of the support extension 212 to position and fix the positioning member 220 on the support extension 212. The positioning member 220 is located below the support extension 212 and connected to the bottom of the support extension 212, facilitating the positioning member 220 in positioning the finger body 300.

[0040] Multiple positioning blocks 221 are provided at the bottom of the positioning component 220. The multiple positioning blocks 221 are evenly spaced along the length direction of the positioning component 220, and the spacing is matched with the width of each contact finger 310. The width of the positioning block 221 is matched with the gap between two adjacent contact fingers 310. Therefore, when positioning the contact finger body 300, the positioning component 220 can be matched and inserted into the gaps of the contact finger body 300 to adjust the assembly position of the contact finger body 300, so that the contact finger body 300 contacts the contact more evenly, reduces the wear of the contact finger body 300, and improves the service life of the disconnecting switch.

[0041] In a preferred embodiment of the present invention, the first end of the support extension 212 is detachably connected to the substrate 211, and the second end of the support extension 212 is detachably connected to the positioning member 220.

[0042] It should be understood that by making the connection between the support extension 212 and the substrate 211 detachable, and the connection between the positioning member 220 and the support extension 212 detachable, they can be quickly disassembled and assembled. When different products have different positions, the corresponding support extension 212 and positioning member 220 can be replaced more conveniently. In this way, the same tooling can complete the installation of the contact finger 310 of various products with different current levels.

[0043] In a preferred embodiment of the present invention, the support extension member 212 includes an extension rod 2121 and a pad 2122. The first end of the extension rod 2121 is fixedly connected to the base plate 211, the second end of the extension rod 2121 is fixedly connected to one end of the pad 2122, and the other end of the pad 2122 is fixedly connected to the end of the positioning member 220.

[0044] It should be noted that the support extension 212 is configured to include an extension rod 2121 and a pad 2122. The extension rod 2121 extends the installation position of the positioning member 220, allowing the positioning member 220 to be extended to a suitable position. By setting the pad 2122 between the extension rod 2121 and the positioning member 220, the vertical height of the positioning member 220 can be adjusted, so that the mounting block at the bottom of the positioning member 220 can be inserted into the gap of the finger body 300.

[0045] The 100 parts of the touch assembly fixture are easy to manufacture and replace. As can be seen from the above, the key positions adopt a modular design, which has excellent interchangeability and facilitates timely replacement when the product is updated.

[0046] In a preferred embodiment of the present invention, a positioning groove (not shown in the figure) is provided on the substrate 211, a positioning plate 2112 is assembled in the positioning groove, and two positioning protrusions 2111 are provided on the positioning plate 2112.

[0047] In detail, a positioning groove is provided in the middle of the substrate 211, and a positioning plate 2112 is installed in the positioning groove. A positioning protrusion 2111 is provided at the bottom of the positioning plate 2112. Bolts are provided at both ends of the substrate 211 for fixing. The positioning protrusion 2111 at the bottom of the positioning plate 2112 facilitates disassembly and replacement.

[0048] Furthermore, the positioning block 221 has a T-shaped cross-section along the transverse direction, the width of the top of the positioning block 221 is smaller than the width of the bottom of the positioning block 221, and the top of the positioning block 221 is fixedly connected to the positioning member 220.

[0049] Please refer to Figure 5 The positioning block 221 has a T-shaped cross section along the transverse direction. The width of the top of the positioning block 221 is smaller than the width of the bottom of the positioning block 221, so it can be better inserted into the gap between adjacent fingers 310 for positioning. The stepped surface at the bottom of the positioning block 221 can adjust the parallelism of the finger body 300, making it more convenient to use.

[0050] In a preferred embodiment of the present invention, the extension rod 2121 is fixedly connected to the base plate 211 by bolts. The extension rod 2121, the pad 2122 and the positioning member 220 are all provided with bolt holes that cooperate with each other. The extension rod 2121 is fixedly connected to the positioning member 220 by bolts.

[0051] It should be understood that the connection between the extension rod 2121 and the base plate 211 and the connection between the extension rod 2121 and the positioning member 220 are made by bolt connection, which is simple in structure, reliable in connection and convenient in assembly and disassembly.

[0052] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A fixture for assembling disconnector switch contacts, characterized in that, The device includes a touch finger positioning assembly for positioning the pre-assembled position of the touch finger body. The touch finger positioning assembly includes a pre-positioning extension and a positioning member. The pre-positioning extension has at least two positioning protrusions on one side. The first end of the positioning member is fixedly connected to the side of the pre-positioning extension opposite to the positioning protrusions. The second end of the positioning member is cantilevered outward and has a plurality of positioning blocks evenly distributed thereon. The positioning member is located above the touch finger body. The pre-positioning extension includes a base plate and supporting extensions. Two supporting extensions are disposed opposite each other at both ends of the base plate along its length. At least two positioning protrusions are provided on one side of the base plate. A first end of each supporting extension is fixedly connected to the base plate, and a second end of each supporting extension extends along the width of the base plate. Both ends of the positioning member are respectively connected to the second ends of the corresponding supporting extensions. The positioning member is disposed at the lower part of the supporting extension. A plurality of positioning blocks are evenly spaced along the length of the positioning member on the lower surface of the positioning member. The positioning block has a T-shaped cross-section along the transverse direction, the width of the top of the positioning block is smaller than the width of the bottom of the positioning block, and the top of the positioning block is fixedly connected to the positioning component.

2. The disconnector switch contact finger assembly fixture according to claim 1, characterized in that, The first end of the support extension is detachably connected to the substrate, and the second end of the support extension is detachably connected to the positioning member.

3. The disconnector switch contact finger assembly fixture according to claim 1, characterized in that, The support extension member includes an extension rod and a pad. The first end of the extension rod is fixedly connected to the base plate, the second end of the extension rod is fixedly connected to one end of the pad, and the other end of the pad is fixedly connected to the end of the positioning member.

4. The disconnector switch contact finger assembly fixture according to claim 1, characterized in that, The substrate has a positioning groove, and a positioning plate is installed in the positioning groove. Two positioning protrusions are provided on the positioning plate.

5. The disconnector switch contact finger assembly fixture according to claim 3, characterized in that, The extension rod is fixedly connected to the base plate by bolts. The extension rod, the pad, and the positioning member are all provided with bolt holes that cooperate with each other. The extension rod is fixedly connected to the positioning member by bolts.

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