CN210210177U - Novel socket wrench for dismounting conductive screw of generator rotor - Google Patents

Abstract

The utility model discloses a novel socket wrench for dismounting a conductive screw of a generator rotor, which comprises an inner hexagon bolt, a guide sleeve and a transition rod; the bottom of guide pin bushing be equipped with the screw hole, hexagon socket head cap screw's screw rod passes screw hole and the interior screw-thread fit of conductive screw upper end, the upper end of guide pin bushing sets up general interior hexagonal hole, the transition pole is inserted in general interior hexagonal hole, the top square hole of transition pole connects torque wrench, the bottom outer lane of guide pin bushing is equipped with a plurality of tooth portion, the breach block on tooth portion and conductive screw's top. The utility model discloses a box spanner dismouting conductive screw of being convenient for, convenience simple to use.

Description

Novel socket wrench for dismounting conductive screw of generator rotor

Technical Field

The utility model relates to the field of machinary, specifically speaking relates to a generator rotor dismouting conductive screw is with novel box spanner.

Background

The conductive screw (figure 1) and the conductive rod (figure 3) of the generator are matched with the conductive screw (figure 11) by adopting zirconium copper materials, and the thread matching gap is small. Lead to the screw-thread fit clearance to be littleer even 0 after silver-plating according to technical requirement on conductive screw's the lower extreme external screw thread and the conducting rod with conductive screw complex internal thread, appear the jam condition of dying very easily when closing soon, with current box spanner (fig. 4, fig. 5) dismouting, because the nut can only connect box spanner or monkey wrench, at the in-process of tearing, dress conductive screw, the uncontrollable moment of torsion, and the box spanner guide pin bushing tooth portion deformation that the dismouting conductive screw can appear, the fracture, cause box spanner to scrap. The flanging at the gap (figure 2) for dismounting the conductive screw is deformed, and the conductive screw is not rotated. When the situation occurs, the rotor must be transferred to a drilling machine, the rotor is clamped and fixed, a drill bit is used for punching from the center of the internal thread above the conductive screw, the hole is deep to the joint of the conductive rod, and the conductive screw is destructively removed. If the depth of the drill bit is improperly controlled, the matching threads of the conductive rod and the conductive screw are damaged, so that the conductive rod is scrapped, and great waste is caused. Therefore, a novel socket wrench for dismounting conductive screws is urgently needed, the dismounting notch hole for avoiding destroying the conductive screws in the dismounting conductive screws process can be met, and the torque wrench can be connected, so that the dismounting torque of the conductive screws is controllable, and the tooth part of the socket wrench is not easy to break due to the too large dismounting torque.

SUMMERY OF THE UTILITY MODEL

In order to achieve the purpose, the utility model provides a generator rotor dismouting conductive screw uses novel box spanner, this box spanner dismouting conductive screw of being convenient for, convenience simple to use.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a novel socket wrench for dismounting a conductive screw of a generator rotor comprises an inner hexagon bolt, a guide sleeve and a transition rod; the bottom of guide pin bushing be equipped with the screw hole, hexagon socket head cap screw's screw rod passes screw hole and the interior screw-thread fit of conductive screw upper end, the upper end of guide pin bushing sets up general interior hexagonal hole, the transition pole is inserted in general interior hexagonal hole, the top square hole of transition pole connects torque wrench, the bottom outer lane of guide pin bushing is equipped with a plurality of tooth portion, the breach block on tooth portion and conductive screw's top.

In a further technical scheme, the guide sleeve is made of 25Cr2MoVA round steel. The existing guide sleeve is generally processed by a steel pipe, the size of a tooth part of the guide sleeve is limited by the wall thickness of the steel pipe, round steel is selected, the yield strength of the material is high, and the fracture probability of the tooth part is reduced.

According to the further technical scheme, the number of the tooth parts is 4, and the tooth parts are uniformly arranged at the outer ring of the bottom of the guide sleeve. The tooth portion of guide pin bushing is increased to four teeth by original two teeth, has reduced effort and the reaction force of every tooth and conductive screw dismouting breach, reduces guide pin bushing tooth portion fracture and conductive screw breach turn-ups deformation probability.

According to the further technical scheme, the width of the tooth part is slightly smaller than that of the notch, so that the conductive falling nail is convenient to disassemble and assemble.

According to a further technical scheme, the tooth parts are vertically arranged downwards.

According to the further technical scheme, the middle of the guide sleeve is provided with a groove for separating an inner hexagonal hole in the guide sleeve from a lower area of the inner hexagonal hole. The separation of the upper region and the lower region in the guide sleeve is realized by the groove, and after the hexagonal hole in the upper part of the guide sleeve is inserted into the transition rod, the transition rod can be effectively fixed, so that the slide of the transition rod is prevented.

Advantageous effects

1. The utility model discloses a guide pin bushing inner structure makes hexagon socket head cap screw and guide pin bushing link into an integrated entity through setting up the screw hole. The upper end of the guide sleeve is designed into a universal inner hexagonal shape, so that the transition rod can be conveniently pulled out and inserted.

2. The bolt adopts the hexagon socket head cap structure, and convenient to use hexagon spanner screws up, closes soon with conducting screw upper end internal thread (fig. 2) and forms an organic whole with the conducting screw, reduces box spanner tooth portion atress, reduces the fracture of box spanner tooth portion, the probability that conducting screw breach turn-ups warp.

3. The transition rod is suitable for socket wrenches with different sizes, has strong universality, reduces the tooling cost and is convenient for an operator to store; the square hole above the transition rod is connected with a torque wrench, so that the conductive screw dismounting and mounting torque can be conveniently controlled.

Drawings

FIG. 1 is a schematic structural diagram of a prior art conductive screw;

FIG. 2 is a view taken along the line B in FIG. 1;

FIG. 3 is a schematic diagram of a conductive rod according to the prior art;

FIG. 4 is a front view of a prior art socket wrench for removing and installing a conductive screw;

FIG. 5 is a top view of a guide sleeve of a socket wrench for attaching and detaching a conductive screw according to the prior art;

fig. 6 is a schematic structural view of the present invention;

FIG. 7 is a front view of the guide sleeve;

FIG. 8 is a top view of the guide sleeve;

FIG. 9 is a front view of the transition bar;

FIG. 10 is a top view of the transition bar;

FIG. 11 is an assembly view of a conventional socket wrench with a conductive screw and a conductive rod;

fig. 12 is a schematic view of the conductive screw and the conductive rod according to the present invention.

The labels in the figure are: 1. internal thread, 2, notch, 3, external thread, 4, internal thread of conducting rod, 5, nut, 6, guide sleeve, 7, tooth portion, 8, transition rod, 9, groove, 10, hexagon socket head cap screw, 11, hexagon socket head cap hole, 12, threaded hole, 13, hole, 14 and conducting screw.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Examples

As shown in fig. 6-10, a novel socket wrench for dismounting a conductive screw of a generator rotor comprises an inner hexagon bolt 10, a guide sleeve 6 and a transition rod 8; the bottom of the guide sleeve 8 is provided with a threaded hole 12, a screw of the hexagon socket head cap screw 10 penetrates through the threaded hole 12 to be matched with an internal thread 1 at the upper end of the conductive screw 14, the upper end of the guide sleeve 6 is provided with a universal hexagon socket 11, the transition rod 8 is inserted into the universal hexagon socket 11, a top square hole 13 of the transition 8 is connected with a torque wrench, the outer ring at the bottom of the guide sleeve 6 is provided with a plurality of tooth parts 7, and the tooth parts 7 are clamped with a notch 2 at the top end of the conductive screw 14.

The material of the guide sleeve 6 adopts 25Cr2MoVA round steel. The existing guide sleeve is generally processed by a steel pipe, the size of a tooth part of the guide sleeve is limited by the wall thickness of the steel pipe, round steel is selected, the yield strength of the material is high, and the fracture probability of the tooth part is reduced.

The number of the tooth parts 7 is 4, and the tooth parts are uniformly arranged at the outer ring of the bottom of the guide sleeve 6. The tooth part of the guide sleeve 6 is increased to four teeth by two original teeth, so that the acting force and the reacting force of each tooth and the conductive screw dismounting notch are reduced, and the fracture of the tooth part of the guide sleeve and the flanging deformation probability of the conductive screw notch are reduced.

The width of the tooth part 7 is slightly smaller than that of the notch. The middle of the guide sleeve 6 is provided with a groove 9 for separating an inner hexagonal hole inside the guide sleeve from the lower area of the inner hexagonal hole. The separation of the upper region and the lower region in the guide sleeve is realized by the groove, and after the hexagonal hole in the upper part of the guide sleeve is inserted into the transition rod, the transition rod can be effectively fixed, so that the slide of the transition rod is prevented.

The utility model discloses a novel box spanner is applicable to all generator rotor dismouting conducting screw of my department 3MW ~350MW and uses, at the in-process of dress conducting screw, with during the internal thread on hex bolts screw in conducting screw upper portion, only with the transition pole with torque wrench be connected can, the control moment of torsion of being convenient for satisfies the electrically conductive requirement of drawing installation.

As shown in fig. 12, in the process of detaching the conductive screw, the socket head cap screw is screwed into the internal thread on the upper portion of the conductive screw, so that the fixture and the conductive screw are integrated, meanwhile, four tooth portions in the guide sleeve are inserted into four notches of the conductive screw, the transition rod is inserted into the guide sleeve, the torque wrench is connected, and the conductive screw is detached. After the novel socket wrench for dismounting the conductive screw is used, in the process of dismounting the conductive screw, the flanging deformation phenomenon of the conductive screw B in the figure 1 towards the view dismounting notch is well controlled; the design of the guide sleeve with the new structure effectively avoids the condition that the socket wrench is scrapped due to the bending deformation and fracture of the tooth part of the guide sleeve; after the tool is used, the condition that the conducting rod is damaged and taken out can not be basically removed without the conducting screw, so that the quality and the efficiency are improved.

Claims (6)

1. A novel socket wrench for dismounting a conductive screw of a generator rotor is characterized by comprising an inner hexagon bolt, a guide sleeve and a transition rod; the bottom of guide pin bushing be equipped with the screw hole, hexagon socket head cap screw's screw rod passes screw hole and the interior screw-thread fit of conductive screw upper end, the upper end of guide pin bushing sets up general interior hexagonal hole, the transition pole is inserted in general interior hexagonal hole, the top square hole of transition pole connects torque wrench, the bottom outer lane of guide pin bushing is equipped with a plurality of tooth portion, the breach block on tooth portion and conductive screw's top.

2. The novel socket wrench for assembling and disassembling conducting screws of the generator rotor as claimed in claim 1, wherein the material of the guide sleeve is 25Cr2MoVA round steel.

3. The novel socket wrench for assembling and disassembling conducting screws of the generator rotor as claimed in claim 1, wherein the number of the tooth parts is 4, and the tooth parts are uniformly arranged at the outer ring of the bottom of the guide sleeve.

4. The novel socket wrench for assembling and disassembling conducting screws on a generator rotor as claimed in claim 1, wherein the width of the tooth portion is slightly smaller than the width of the notch.

5. The novel socket wrench for conducting screws in disassembling and assembling generator rotors as claimed in claim 1, wherein said tooth portions are disposed vertically downward.

6. The novel socket wrench for assembling and disassembling conducting screws of the generator rotor as claimed in claim 1, wherein a groove is formed in the middle of the guide sleeve for separating the hexagon socket inside the guide sleeve from the lower region of the hexagon socket.

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