Assembling equipment for lightning arrester core body assembly

Abstract

The utility model provides assembling equipment for a lightning arrester core body assembly, the lightning arrester core body assembly comprises a core body side top conductor, a core body and a core body base located below the core body, the core body is provided with a plurality of core body units which are mutually overlapped, each core body unit comprises a resistor disc and an insulating part, the top cover is used for covering a conductor at the top of a core body side, the base is used for being detachably fixed on a lightning arrester core body seat, the supporting device is used for being detachably connected with the top cover and the base, the top cover comprises a rib, at least two through holes are formed in the rib, positioning bolts are inserted into the through holes, and the supporting device is used for being detachably connected with the top cover and the base. And in a state that the core body is arranged on the core body side top conductor, one of the through holes is aligned with a hole of the core body side top conductor through which the operating rod passes in the vertical direction. By designing the assembling equipment which is consistent with the core side top conductor in relative position, the core side top conductor operation rod hole position can be well positioned.

Description

Technical Field

[0001] This utility model relates to an assembly device for surge arrester core components. Background Technology

[0002] The three-limb series-connected surge arrester with integrated insulation is an advanced design aimed at providing higher reliability and better overvoltage protection. Its three-limb series structure improves withstand voltage and ensures a more uniform electric field distribution; the integrated insulation design enhances insulation performance and reduces installation space; and its high reliability and long lifespan are ensured by the use of high-quality insulation materials and metal oxide resistant elements, guaranteeing stable operation in various harsh environments. This surge arrester can quickly respond to overvoltages, rapidly guiding them to ground and protecting electrical equipment from damage. The three-limb series-connected surge arrester with integrated insulation is widely used in various power systems.

[0003] Traditional technologies lack assembly equipment to assist in assembling the core of such surge arresters. Therefore, assembly has so far relied entirely on manual experience. The overlapping arrangement of the resistors and insulation components in a three-column series-connected core surge arrester with integrated insulation makes aligning the operating rod with the top conductor of the core extremely difficult, sometimes even leading to installation failure. Furthermore, when assembling the core of such surge arresters entirely by hand, excessive vertical deviations in the accumulated resistors and insulation components can result in the core of the three-column series-connected core surge arrester with integrated insulation not being perfectly vertical. Utility Model Content

[0004] The main technical problem to be solved by this disclosure is to overcome the problem of misalignment when the operating lever is assembled on the top conductor of the core side.

[0005] This technical problem is solved by an assembly device for a surge arrester core assembly. The surge arrester core assembly includes a core-side top conductor, a core, and a core base located below the core. The core has multiple stacked core units, each core unit including a resistor and an insulator. According to this disclosure, the assembly device has a top cover for covering the core-side top conductor, a base for detachably fixing it to the surge arrester core base, and a support device for detachably connecting the top cover and the base. The top cover includes ribs with multiple first through holes. One of the multiple first through holes and a corresponding through hole of the core-side top conductor are configured for inserting a positioning pin or operating rod and are vertically aligned with each other when the core is mounted on the core-side top conductor. By designing an assembly device that maintains a consistent relative position with the core-side top conductor, better positioning of the operating rod hole of the core-side top conductor can be achieved.

[0006] To avoid misalignment problems, especially vertical errors, that may occur during the vertical installation of individual core units, especially insulators and resistors, it is advantageous to specify that the assembly equipment also has a positioning device for the core units, which fits into the core during core assembly.

[0007] To achieve vertical alignment of the insulating components, the positioning device is designed with at least one, preferably two, first rods, which abut against a recess on the outer periphery of the insulating component during surge arrester core assembly. Further specified, the cross-section of the first rod is designed to fit, and particularly to mesh with, the cross-section of the insulating component, preventing rotational movement when the core unit is inserted into the first rod. This is readily achieved, especially by machining the first rod with a circular cross-section. In this case, to facilitate the insertion of the insulating component and resistor sheet into the assembly equipment from one side, only two first rods are needed to ensure no rotational movement during core unit insertion.

[0008] To make the assembly equipment easier to use and reduce its structural complexity and thus its processing difficulty, the support device of the assembly equipment is designed as multiple second bars. These multiple second bars are mirror-symmetrical to the ribs and detachably installed on the main body of the base and top cover of the assembly equipment. The second bars also allow the assembly equipment to be vertical, making the positioning of the assembly equipment more accurate, and the bars are cheaper and lighter.

[0009] According to an extension of the assembly equipment disclosed herein, the top cover of the assembly equipment includes an annular main body portion, the ribs being designed in a cross shape with a short side and a long side, wherein the long side extends along the diameter and connects to the annular main body portion, a first through hole is arranged longitudinally along the long side, and a second through hole is provided longitudinally along the short side for one end of a first rod to pass through, thereby facilitating the fastening of the core assembly from the top of the assembly equipment.

[0010] According to an extension of the assembly equipment disclosed herein, the annular main body of the top cover is provided with a plurality of holes for connecting one end of the second rod, the plurality of holes being arranged mirror-symmetrically with respect to the long side, thereby enhancing the support stability of the assembly equipment.

[0011] To further reduce the weight of the assembly equipment and facilitate its assembly and disassembly, the base includes a circular main body. The main body of the base has holes for connecting the other end of the second rod and holes for connecting with the surge arrester core seat, so that the second rod is arranged parallel to the axis.

[0012] To support the positioning device, especially the first rod, and thus reduce vertical errors during the assembly of the resistor and the insulating component, according to an advantageous provision of this disclosure, at least one radially inward protrusion is detachably mounted on the annular main body portion of the base, the apex of which has a hole for connecting the first rod.

[0013] According to a further provision of this disclosure, at least one radially inward protrusion is detachably mounted on the annular main body portion of the base. The apex of the protrusion has a hole for connecting the first rod. The rib is disposed on the diameter of the annular main body portion of the top cover and its projection on the base is located at the mirror-symmetrical center of the protrusion. This ensures that the through hole / hole for positioning pin / operating rod of the top conductor on the core side is accurately oriented and positioned relative to the core. At the same time, this design avoids the bolts used to fix the top conductor on the core side, provides room for tightening, and further reduces the weight of the assembly equipment according to this disclosure.

[0014] According to this disclosure, what is advantageous in ensuring that all insulating components and resistors are precisely aligned in the vertical direction is that the at least one radially inward protrusion corresponds to a recess on the outer periphery of the insulator during the assembly of the surge arrester core.

[0015] According to a further advantageous provision of this disclosure, three legs are provided symmetrically with respect to the ribs on the main body of the base, each pointing radially outward. These three legs prevent any wear on the lower surface, i.e. the sealing surface, of the annular main body of the base of the assembly equipment when the assembly equipment according to this disclosure is not in use. At the same time, the radially outward pointing legs also prevent the base from tipping over when placed, thus making the assembly equipment more stable in the vertical direction. Attached Figure Description

[0016] To make the objectives, technical solutions, and advantages of this disclosure clearer, the assembly equipment for surge arrester core assemblies of this disclosure is further described below with reference to the accompanying drawings and specific embodiments. In the accompanying drawings,

[0017] Figure 1 It is a schematic perspective view of the assembly equipment with the pre-assembled surge arrester core assembly;

[0018] Figure 2a It is a longitudinal cross-sectional view of the assembly equipment with the assembled arrester core assembly with the positioning pin inserted, cut along the longitudinal centerline of the ribs.

[0019] Figure 2b It is a longitudinal cross-sectional view of the assembly equipment with the pre-assembled arrester core assembly with the operating rod inserted, cut along the longitudinal centerline of the ribs.

[0020] Figure 3This is a schematic perspective view of the assembly equipment used for surge arrester core components; and

[0021] Figure 4 This is a schematic top view of an assembly apparatus for a surge arrester core assembly according to the present disclosure.

[0022] Figure label:

[0023] 1000 Assembly equipment, 1100 First bar, 1200 Positioning pin, 1210 Positioning through hole, 1300 Top cover, 1310 Rib, 1320 (Top cover) Main body, 1400 Base, 1410 (Base) Main body, 1411 Protrusion, 1420 Leg, 1500 Support device, 1510 Second bar, 2000 Core assembly, 2100 Core, 2110 Core unit, 2111 Resistor, 2112 Insulator, 2112a Recess, 2200 Core side top conductor, 2210 Through hole for clamping, 2211 Fixing bolt, 2220 Positioning through hole, 2230 Through hole for positioning device, 2300 Core seat and 3000 Operating lever. Detailed Implementation

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and foregoing description of the drawings of this disclosure are intended to cover non-exclusive inclusion.

[0025] In the description of this disclosure, the technical terms “first” and “second” are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order or primary or secondary relationship of the indicated technical features.

[0026] In the description of this disclosure, directional terms such as "upper," "lower," "top," and "bottom" are determined relative to the relative position of the surge arrester core in the assembled state in the corresponding drawings.

[0027] In the embodiments of this disclosure, the same reference numerals denote the same parts, and for the sake of brevity, detailed descriptions of the same parts are omitted in different forms of drawings.

[0028] Figure 1A schematic perspective view of an assembly device 1000 with a pre-assembled surge arrester core assembly 2000 is shown. The surge arrester core assembly 2000 includes a core 2100, a core-side top conductor 2200, and a core base 2300. The core 2100 is composed of multiple core units 2110 stacked from bottom to top. Each core unit 2110 includes a resistor 2111 and an insulating member 2112 surrounding the resistor. The outer periphery of the insulating member 2112 has multiple recesses 2112a. The core-side top conductor 2200 is disc-shaped, and on the disc-shaped core-side top conductor 2200, especially on its end face, are six, in particular, openings. Uniformly distributed through-holes 2210 for pressing each core unit 2110 vertically, particularly two through-holes 2220 for positioning the top conductor 2200 of the core side relative to the core 2100, and preferably two through-holes (not shown) for the passage of positioning devices to be described later. The through-holes 2220 for positioning the top conductor 2200 of the core side relative to the core 2100 are also designed to allow an operating rod (not shown) to pass through after the entire core assembly 2000 is installed to enable operation of the surge arrester. The top conductor 2200 of the core side is fixed in position on the core 2100, particularly on the insulation 2112 of the uppermost core unit 2110 of the core 2100.

[0029] The assembly equipment 1000 also has a positioning device for the core unit 2110, especially in this embodiment, it is preferably designed with two first rods 1100, which fit together with the core 2100 during the assembly of the surge arrester core, especially on the recess 2112a of the insulating part 2112 of each core unit 2110, so that all the core units 2110 can be aligned with each other in the vertical direction by means of the first rods 1100.

[0030] The core holder is 2300. Figure 1 The core base 2300 is disc-shaped and has multiple obscured holes at its edge for connection with the assembly equipment 1000. The core base 2300 is connected to the core 2100, especially the bottom core unit 2110, via three obscured pillars.

[0031] Figure 2a This is a longitudinal cross-sectional view of an assembly device 1000, showing an assembled arrester core assembly 2000 with pre-assembled positioning pins 1200 inserted, taken along the longitudinal centerline of the ribs. Figure 2aDuring the assembly of the surge arrester core, the top conductor 2200 on the core side is positioned in a predetermined position by inserting two positioning pins 1200 into it. Then, six fixing bolts 2211 are inserted into the six through holes 2210 of the top conductor 2200. Finally, the predetermined position is fixed and the core units 2110 are secured together by tightening the six fixing bolts 2211 onto the top conductor 2200 using six nuts. At this point, the surge arrester core assembly 2000 is assembled on the assembly equipment 1000. The tightening of these bolts and nuts ensures that the positioning of the operating rod hole on the top conductor remains unchanged.

[0032] Figure 2b It is a longitudinal cross-sectional view of the assembly equipment 1000, which includes the pre-assembled surge arrester core assembly 2000 with the operating rod 3000 inserted, cut along the longitudinal centerline of the ribs. Figure 2b The steps shown occur Figure 2a After the steps shown, that is, after tightening the fixing bolt 2211, a corresponding positioning pin 1200 is immediately pulled out from the core-side top conductor 2200 or the assembly device 1000. As a replacement for this positioning pin 1200, the operating lever 3000 is passed through the corresponding positioning through holes 2220 and 1210 of the core-side top conductor 2200 and the top cover of the assembly device 1000, and the operating lever 3000 is kept extending longitudinally along the core.

[0033] Combination Figure 2a and Figure 2b The positioning through holes 2220 or 1210 of the core-side top conductor 2200 or the assembly device 1000, which are used for both the positioning pin 1200 and the operating lever 3000, are aligned with each other in the vertical direction. By passing the operating lever 3000 through the corresponding positioning through hole 2220 of the core-side top conductor 2200 and the positioning through hole 1210 of the top cover of the assembly device 1000 and keeping the operating lever 3000 extending longitudinally along the core, it is possible to align the operating lever 3000 with the core-side top conductor 2200 and make the operating lever 3000 operate smoothly in a predetermined position relative to the core.

[0034] Figure 3This is a schematic perspective view of an assembly device 1000 for assembling surge arrester core components. The assembly device 1000 includes a top cover 1300 for covering the top conductor on the core side, a base 1400 for detachably fixing to the surge arrester core base, and a support device 1500 for detachably connecting the top cover 1300 and the base 1400. The top cover 1300 includes ribs 1310 with multiple through holes, two of which are the aforementioned positioning through holes 1210 (not shown), used for both the passage of a positioning pin 1200 and an operating rod. As described above... Figure 3 As shown, the outer contour of the assembly equipment has a substantially rotationally symmetrical shape and therefore has an axis, so as to be more securely mounted on the surge arrester core assembly.

[0035] The top cover 1300 of the assembly equipment preferably includes an annular main body portion 1320. Ribs 1310 are provided on the main body portion 1320. The ribs 1310 are generally cross-shaped and have long and short sides. The long side extends along the diameter and connects to the annular main body portion. Preferably, two through holes are provided on the long side of the ribs 1310 for the positioning pins 1200 to pass through. Only one of these two through holes, as shown in FIG. 2, is also designed for the operation rod to pass through for the operation of the operation rod. Preferably, two through holes are provided on the short side of the ribs 1310 for one end of the first bar, especially the first bar 1100, to pass through.

[0036] The base 1400 of the assembly equipment includes an annular main body portion 1410 and three support legs 1420 for supporting the base 1400. The main body portion 1410 of the base 1400 is coaxially arranged with the main body portion 1320 of the top cover 1300. Preferably, two radially inward protrusions 1411 are detachably provided on the main body portion 1410 of the base. The radially inner ends of the protrusions 1411 are respectively provided with through holes for the first rod 1100 to pass through. Preferably, three support legs 1420 are radially outwardly arranged on the annular main body portion 1410 of the base to prevent the assembly equipment with the surge arrester core assembly from tipping over and to protect the sealing surface between the base 1400 of the assembly equipment and the core seat 2300, i.e., the lower surface of the annular main body portion 1410 of the base 1400, thereby preventing its wear.

[0037] from Figure 3 As can be clearly seen, the support device 1500 is preferably designed with four second rods 1510, which are detachably mounted on the main body 1320 of the base 1400 and top cover 1300 of the assembly equipment 1000 via the threaded device shown in Figure 2. This not only makes the assembly equipment 1000 lighter, but also facilitates the assembly and disassembly of the assembly equipment 1000 itself and makes the structure of the assembly equipment 1000 more stable.

[0038] The annular main body portion 1320 of the top cover is provided with four holes for connecting one end of the second rod 1510. These holes are arranged symmetrically with respect to the long side of the second rod 1510 to enhance the support stability of the assembly equipment 1000.

[0039] The main body 1410 of the base has holes for connecting the other end of the second rod 1510 and holes for connecting with the surge arrester core seat 2300, so that the second rod is arranged parallel to the axis, thereby obtaining an assembly device 1000 that is easy to assemble and disassemble. Preferably, two radially inward protrusions 1411 are detachably mounted on the annular main body 1410 of the base. The apex of each protrusion 1411 has a hole for connecting the first rod 1100. The rib 1310 is arranged on the diameter of the annular main body of the top cover, and its projection on the base is located at the mirror-symmetrical center of the protrusion. This ensures that the orientation and positioning of the top conductor hole through which the operating rod 3000 passes relative to the core are accurate, so that the operating rod 3000 can operate smoothly. Figure 3 Combination Figure 1 It is known that the radially inward protrusions 1411 correspond to the recesses on the outer periphery of the insulator 2112 during the assembly of the surge arrester core, thereby ensuring that all insulators 2112 and resistors 2111 are precisely aligned in the vertical direction during the assembly process.

[0040] Figure 4 This is a schematic top view of an assembly apparatus 1000 for a surge arrester core assembly according to this disclosure. Figure 4 As shown, the shielded main body 1410 of the base is coaxial with the main body 1320 of the top cover and preferably has the same diameter. Two protrusions 1411 and three legs 1420 on the base are arranged symmetrically with respect to the ribs 1310 on the top cover. The line connecting the centers of the two through holes on the long side of the rib 1310 and the line connecting the centers of the two through holes 2230 on the short side are preferably orthogonal to each other. This structural design is for matching the fixing bolts 2211 of the top conductor 2200 on the fixed core side of the surge arrester core. The second rod is arranged symmetrically with respect to the ribs 1310. The three legs are distributed symmetrically with respect to the ribs 1310 on the main body of the base to protect the sealing surface of the tooling base and prevent wear on the lower surface of the annular main body of the assembly equipment 1000.

[0041] This results in an assembly device 1000 for a surge arrester core assembly 2000 that is simple in structure and very convenient for core assembly workers to use. The surge arrester core assembly 2000 is preferably, but not limitedly, assembled using this assembly device 1000 as follows: the base of the assembly device 1000 is positioned and connected to the top cover of the assembly device 1000 by four second rods; then, two first rods are respectively inserted into the radially inward protruding holes of the assembly device 1000, and the core seat is fixed below the base of the assembly device 1000; resistors and insulating components are stacked sequentially and at intervals on the core seat, such that each insulating component abuts against the two first rods with its two recesses; after the core unit 2110 is assembled, the top cover is removed from the assembly device 1000, and then the top conductor 2200 on the core side is placed on the assembled core unit 2110. The core-side top conductor 2200 is fixed relative to the core by passing two positioning pins 1200 through the core-side top conductor 2200 and the assembly device 1000. Then, six fixing bolts 2211 are passed through the ribs 1310 of the core-side top conductor 2200 and the assembly device 1000, thereby fixing the hole in the core-side top conductor 2200 for the operating rod 3000 / positioning pins 1200 to pass through in the circumferential direction relative to the core. The core unit 2110 is pressed together vertically from the top cover side and the base side by means of nuts. The assembled core assembly 2000 is obtained by removing the positioning pins 1200 and disassembling the assembly device 1000.

[0042] The above are merely preferred embodiments of this disclosure and are not intended to limit the scope of protection of this disclosure. It should be noted that for those skilled in the art, various modifications, equivalent substitutions, and improvements can be made without departing from the principles of this disclosure, and all such modifications, equivalent substitutions, and improvements are included within the scope of protection of this disclosure.

Claims

1. An assembly apparatus for a surge arrester core assembly, the surge arrester core assembly comprising a core-side top conductor, a core, and a core base located below the core, the core having a plurality of stacked core units, each core unit comprising a resistor sheet and an insulating component, characterized in that, The assembly equipment has a top cover for covering the top conductor on the core side, a base for detachably fixing it to the surge arrester core base, and a support device for detachably connecting the top cover and the base. The top cover includes ribs with a plurality of first through holes. One of the plurality of first through holes and a corresponding through hole on the top conductor on the core side are configured to allow the insertion of a positioning pin or operating rod and to be vertically aligned with each other when the top conductor on the core side is fitted with the core.

2. The assembly equipment according to claim 1, characterized in that, The assembly equipment also has a positioning device for the core unit, which fits into the core during core assembly.

3. The assembly equipment according to claim 2, characterized in that, The positioning device is designed as at least one first rod, which abuts against the recess on the outer periphery of the insulator during the assembly of the surge arrester core, for aligning each of the insulators in the vertical direction.

4. The assembly equipment according to claim 3, characterized in that, The support device is designed as a plurality of second bars, which are mirror-symmetrical to the ribs and detachably mounted on the main body of the base and top cover of the assembly equipment.

5. The assembly equipment according to claim 4, characterized in that, The top cover includes an annular main body portion, and the ribs are designed in a cross shape with a short side and a long side, wherein the long side extends along the diameter and connects to the annular main body portion, the first through hole is arranged longitudinally along the long side, and a second through hole is provided on the short side along the longitudinal direction of the short side for one end of the first rod to pass through.

6. The assembly equipment according to claim 5, characterized in that, The annular main body of the top cover has a plurality of holes for connecting one end of the second rod, and the plurality of holes are arranged symmetrically with respect to the long side.

7. The assembly equipment according to claim 6, characterized in that, The base includes an annular main body portion, on which holes are respectively provided for connecting the other end of the second rod and for connecting with the surge arrester core seat, such that the second rod is arranged parallel to the axis.

8. The assembly equipment according to claim 7, characterized in that, At least one radially inward protrusion is detachably mounted on the annular main body of the base. A hole for connecting the first rod is provided at the apex of the protrusion. The rib is arranged on the diameter of the annular main body of the top cover and its projection on the base is located at the center of the mirror symmetry of the protrusion.

9. The assembly equipment according to claim 8, characterized in that, The at least one radially inward protrusion corresponds to a recess on the outer periphery of the insulating component during the assembly of the surge arrester core.

10. The assembly equipment according to any one of claims 1 to 9, characterized in that, Three legs are provided on the main body of the base in a mirror-symmetrical manner relative to the ribs, and they point outward radially respectively.

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