CN206711741U - A kind of iron core grounding bolt for voltage transformer - Google Patents

Abstract

A kind of iron core grounding bolt for voltage transformer, including connecting screw, fastening screw and body are the utility model is related to, described connecting screw one end is connected with the iron core inside voltage transformer, and the other end protrudes from body；The body is in U-typed, and the bottom of its U-typed is fixedly connected with connecting screw, and two side ends and the fastening screw of its U-typed are connected through a screw thread；The fastening screw is cylindrical, and its inner is provided with the circular groove being engaged with the connecting screw, and outer end sets fastening screw socket cruciferous；The advantages of the utility model has connection fastening and can slow down corrosion.

Description

A kind of iron core grounding bolt for voltage transformer

Technical field

The utility model belongs to voltage transformer technical field, and in particular to a kind of iron core grounding for voltage transformer Bolt.

Background technology

Transformer is the equipment of scaling transformation voltage or electric current, its function mainly by high-tension electricity or high current in proportion Be transformed into standard small voltage or standard small electric current, so as to realize the standardization of measuring instrumentss, protection equipment and automatic control equipment, Miniaturization；Voltage transformer is during use, because its internal wrapped on cores has high-tension coil, in order to ensure to pacify Entirely, prevent electric leakage and induced voltage from hurting sb.'s feelings, an earth stud being connected with iron core need to be set on the shell of voltage transformer, Existing earth stud is substantially to be made up of a bolt and two nuts, by the way that mutually extruding is consolidated to wire between nut It is fixed, and individually using two nuts extrude fixing and do not fastened in the presence of connection, nut easily loosens and wire dropping occurs Problem, and in existing voltage transformer earth stud completely it is naked be exposed on the external, easily corroded and cause loose contact And the problem of wire dropping；To solve the above problems, a kind of voltage transformer for connecting fastening and corrosion being slowed down of exploitation Iron core grounding bolt is necessary.

Utility model content

The purpose of this utility model is for overcome the deficiencies in the prior art, and provides a kind of connection fastening and can slow down The voltage transformer iron core grounding bolt of corrosion.

What the purpose of this utility model was realized in：A kind of iron core grounding bolt for voltage transformer, including even Screw, fastening screw and body are connect, described connecting screw one end is connected with the iron core inside voltage transformer, and the other end protrudes from The body, it is present in inside the body；The body is in U-typed, and the bottom of its U-typed is fixed with the connecting screw to be connected Connect, the two side ends of its U-typed are connected through a screw thread with the fastening screw；The fastening screw is cylindrical, the fastening spiral shell Silk is inner to be provided with the circular groove being engaged with the connecting screw, and outer end sets fastening screw socket cruciferous, described Be provided with the screw thread being engaged with the connecting screw on the cell wall of groove, the outer surface of the fastening screw be provided with it is described The screw thread that body inner surface is engaged.

The both sides of the body are provided with threading hole, and the threading hole is through-hole structure.

The threading hole is located at the side of the U-typed body and the junction of bottom, relative with the threading hole site The body answered is internally provided with cable clamping interface, and the depth of the cable clamping interface is more than the length of the threading bore dia.

Also be arranged with pad and nut in the connecting screw, the pad both sides respectively with the nut and the body Outer surface closely connect.

The length that the connecting screw protrudes from the body bottom is identical with the depth of the groove.

The protective jacket being engaged with the sheath structure is provided with outside the body.

The protective jacket uses elastomeric material.

The beneficial effects of the utility model：The utility model make use of fastening screw respectively between connecting screw and body The mode being connected through a screw thread, it will be penetrated through threading hole inside body and be wrapped in the wire in connecting screw, pass through extruding And be fixedly installed in cable clamping interface, solve due to individually carrying out extruding fixation using two nuts, nut easily occurs and loosens And the problem of causing wire dropping；And the utility model employs the protection that setting is engaged with sheath structure outside body The mode of set, solve due to earth stud completely it is exposed outside, easily occur connection bolt corroded and cause contact not The problem of good and wire dropping；Total, the utility model has the advantages of connecting fastening and can slowing down corrosion.

Brief description of the drawings

Fig. 1 be the utility model without set up defences sheath when top view.

Fig. 2 be the utility model without set up defences sheath when side view.

Fig. 3 is top view of the present utility model.

Fig. 4 is side view of the present utility model.

Fig. 5 is sectional view of the present utility model.

Fig. 6 is the top view of fastening screw in the utility model.

Fig. 7 is the front view of fastening screw in the utility model.

In figure：1st, connecting screw 2, fastening screw 21, groove 22, screw thread a 23, screw thread b 24, fastening screw socket 3, set Body 31, threading hole 32, cable clamping interface 4, pad 5, nut 6, protective jacket.

Embodiment

The utility model is described further below in conjunction with the accompanying drawings.

As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7：A kind of iron core grounding bolt for voltage transformer, bag Connecting screw 1, fastening screw 2 and body 3 are included, described one end of connecting screw 1 is connected with the iron core inside voltage transformer, another Distal process is present in inside the body 3 for the body 3；The body 3 is in U-typed, the bottom of its U-typed and the company Connect screw 1 to be fixedly connected, the two side ends of its U-typed are connected through a screw thread with the fastening screw 2；The fastening screw 2 is in circle Tubular, described the inner of fastening screw 2 are provided with the circular groove 21 being engaged with the connecting screw 1, using groove 21 with The connection of connecting screw 1 and wire is fixed, outer end set it is cruciferous fastening screw socket 24, for fasten and pine Fastening screw 2 is opened, the screw thread a22 being engaged with the connecting screw 1, the fastening spiral shell are provided with the cell wall of the groove 21 The outer surface of silk 2 is provided with the screw thread b23 being engaged with the inner surface of body 3, passes through screw thread a22 and the two-way companies of screw thread b23 The mode connect, increase the tightness of its connection, avoid that loose phenomenon occurs during use.

The both sides of the body 3 are provided with threading hole 31, and the threading hole 31 is through-hole structure；The threading hole 31 is located at The side of the U-typed body and the junction of bottom, the body 3 corresponding with the position of threading hole 31 are internally provided with card Wire casing 32, wire is penetrated inside body 3 by threading hole 31, and be wrapped in connecting screw 1, by fastening screw 2 with connecting The threaded connection between screw 1 and body 3 is connect, makes wire fixing seal in cable clamping interface 32；The depth of the cable clamping interface 32 is big In the length of the diameter of threading hole 31.

Also be arranged with pad 4 and nut 5 in the connecting screw 1, the both sides of pad 4 respectively with the nut 5 and institute The outer surface for stating body 3 closely connects；The connecting screw 1 protrudes from the length of the bottom of body 3 and the groove 21 Depth is identical.

The protective jacket 6 being engaged with the structure of body 3 is provided with outside the body 3；The protective jacket 6 uses rubber Material, the corrosion suffered by body 3 and the internal structure of body 3 can be reduced using protective jacket 6.

The utility model is during use, first, using cross-head screwdriver alignment cross fastening screw socket 24, reversely turns It is dynamic to unclamp fastening screw 2, make to be disconnected between fastening screw 2 and connecting screw 1, then, wire is worn by threading hole 31 Enter inside body 3, and be wrapped in connecting screw 1, tighten fastening screw 2, distinguish the screw thread on the surfaces externally and internally of fastening screw 2 It is connected with connecting screw 1 and body 3, consolidates entering the inside of body 3 by threading hole 31 and being wrapped in connecting screw 1 wire Surely it is sealed in cable clamping interface 32, finally, protective jacket 6 is set in the outside of body 3 and completes to operate；The utility model utilizes fastening The mode that screw 2 is connected through a screw thread between connecting screw 1 and body 3 respectively, it will be penetrated through threading hole 31 inside body 3 And the wire in connecting screw 1 is wrapped in, it is fixedly installed on by extruding in cable clamping interface 32, solves and individually use two spiral shells Cap carries out extruding fixation, and nut connection does not fasten, the problem of easily loosening and wire dropping occurs；And the utility model is covering The protective jacket 6 being engaged with the structure of body 3 is provided with outside body 3, solve due to earth stud completely it is exposed outside, easily hair The problem of raw connection bolt is corroded and causes loose contact and wire dropping.

Total, the utility model has the advantages of connecting fastening and can slowing down corrosion.

Claims (7)

1. a kind of iron core grounding bolt for voltage transformer, including connecting screw（1）, fastening screw（2）And body（3）, It is characterized in that：The connecting screw（1）One end is connected with the iron core inside voltage transformer, and the other end protrudes from the body （3）, it is present in the body（3）It is internal；The body（3）In U-typed, the bottom of its U-typed and the connecting screw（1）Gu Fixed connection, the two side ends of its U-typed and the fastening screw（2）It is connected through a screw thread；The fastening screw（2）It is cylindrical, The fastening screw（2）The inner is provided with and the connecting screw（1）The circular groove being engaged（21）, outer end is provided with ten The fastening screw socket of font（24）, the groove（21）Cell wall on be provided with and the connecting screw（1）The screw thread a being engaged （22）, the fastening screw（2）Outer surface be provided with and the body（3）The screw thread b that inner surface is engaged（23）.

A kind of 2. iron core grounding bolt for voltage transformer as claimed in claim 1, it is characterised in that：The body （3）Both sides be provided with threading hole（31）, the threading hole（31）For through-hole structure.

A kind of 3. iron core grounding bolt for voltage transformer as claimed in claim 2, it is characterised in that：The threading hole （31）Positioned at the side of the U-typed body and the junction of bottom, with the threading hole（31）The corresponding body in position（3） It is internally provided with cable clamping interface（32）, the cable clamping interface（32）Depth be more than the threading hole（31）The length of diameter.

A kind of 4. iron core grounding bolt for voltage transformer as claimed in claim 1, it is characterised in that：The connection spiral shell Silk（1）On be also arranged with pad（4）And nut（5）, the pad（4）Both sides respectively with the nut（5）With the body（3） Outer surface closely connect.

A kind of 5. iron core grounding bolt for voltage transformer as claimed in claim 1, it is characterised in that：The connection spiral shell Silk（1）Protrude from the body（3）The length of bottom and the groove（21）Depth it is identical.

A kind of 6. iron core grounding bolt for voltage transformer as claimed in claim 1, it is characterised in that：The body （3）Outside is provided with and the body（3）The protective jacket that structure is engaged（6）.

A kind of 7. iron core grounding bolt for voltage transformer as claimed in claim 6, it is characterised in that：The protective jacket （6）Using elastomeric material.