CN207609760U - A kind of device solving old box body of speed reducer bolt hole thread failure - Google Patents

Abstract

The utility model is a kind of device solving old box body of speed reducer bolt hole thread failure, steel plate is respectively welded on the outside of the outside of box body of speed reducer and gear box end cover, upper and lower steel plate holes drilled through, upper and lower through-hole correspond to, and bolt passes through upper and lower corresponding through-hole to be fastened again by nut.The beneficial effects of the utility model：By transformation, original counterbore threads connection type is become into used through-hole bolt connecting mode, solves the problems, such as that counterbore threads can not use in tapping again after fracture of wire repeatedly.Eliminate the phenomenon that babinet caused by mechanical babinet bolt hole thread failure can not be sealed effectively.

Description

A kind of device solving old box body of speed reducer bolt hole thread failure

Technical field

The utility model is related to the speed reducer fields of the industries such as metallurgy, and in particular to old box body of speed reducer bolt hole screw thread The processing unit of failure.

Background technology

In fields such as iron and steel industries, the time of speed reducer operation is long, and some reaches 30 years or more.This kind of old speed reducer Gear box end cover entered in babinet counterbore by bolt and babinet is connected to one piece.Bearing and sealing, tail portion are housed on end cap Brake generates larger vibration, and generate turning moment to end cap, it is shearing to be transferred to end cover connecting bolt when clamping braking Torque, long term can cause babinet connection bolt cut-out, and it is to take fracture of wire that maintenance is mostly every time, connection bolt is replaced after tapping, instead Multiple to cause counterbore threads to fail afterwards several times, babinet can not be sealed effectively.

Utility model content

The utility model provides a kind of processing unit solving box body of speed reducer bolt hole thread failure, ensures quickly to solve During site examining and repairing, when the thread failure of box body bolt hole, in the case of no spare part, the connectivity problem of end cap and babinet.

The technical solution of the utility model：A kind of device solving old box body of speed reducer bolt hole thread failure, is subtracting Steel plate, upper and lower steel plate holes drilled through are respectively welded on the outside of the outside of fast box body and gear box end cover, upper and lower through-hole corresponds to, Bolt passes through upper and lower corresponding through-hole to be fastened again by nut.

There are gap, gap 1-5mm between upper and lower steel plate.

Steel plate, which is grown to edge, cuts out double V-groove, the outside of double V-groove and box body of speed reducer, the outside structure of gear box end cover At triangle space be solder.

The beneficial effects of the utility model：By transformation, original counterbore threads connection type is become into used through-hole Bolt connecting mode solves the problems, such as that counterbore threads can not use in tapping again after fracture of wire repeatedly.Eliminate mechanical box body bolt The phenomenon that babinet caused by the thread failure of hole can not be sealed effectively.1. after the utility model use, box body of speed reducer type of attachment Relatively reliable, bolt is not easy to break by shearing moment operation.2. the utility model thoroughly improves present maintenance using rear Pattern, break bolt are directly replaced, and the phenomenon that taking fracture of wire often in upkeep operation is eliminated.3. the utility model has quick, accurate Really, safe and reliable feature.4. the utility model is simple in structure, of low cost, transformation is convenient, can be used for a long time after transformation.

Description of the drawings

Fig. 1 is the connection diagram of the babinet and gear box end cover before transformation；

Fig. 2 is the connection diagram of improved babinet and gear box end cover；

Fig. 3 is the vertical view of Fig. 2；

1- box body of speed reducer, 2- gear box end covers, 3- steel plates, 4- bolts, 5- nuts, the old bolt hole of 6- babinets.

Specific implementation mode

As shown in Figure 2,3, a kind of device solving old box body of speed reducer bolt hole thread failure, in box body of speed reducer 1 Outside and the outside of gear box end cover 2 be respectively welded steel plate 3,3 holes drilled through of upper and lower steel plate, upper and lower through-hole corresponds to, bolt 4 It is fastened again by nut across upper and lower corresponding through-hole.There are gaps, gap 1-5mm to stop rotation for nut between upper and lower steel plate 3 Silk progress, can increase box body of speed reducer 1 and 2 degree of combining closely of gear box end cover by tightening nut.Steel plate 3 uses and slows down The identical material of box body

To increase the firmness of steel plate and weld, steel plate 3, which is grown to edge, cuts out double V-groove, double V-groove and decelerating chassis The triangle space that the outside of body 1, the outside of gear box end cover 2 are constituted is solder.

The installation step of the device is：1. according to gear case body choice of material and gear box end cover consistency of thickness or thick Steel plate, be cut into the 2 piece narrow strips isometric with end cap；

2. by two pieces of steel plate holes drilled through, the hole of a steel plate is identical as the hole site of another steel plate, aperture is identical, then Double V-groove is beaten in the cooperation of steel plate edge；

3. two pieces of steel plate correspondences are welded in gear box end cover and box body of speed reducer, there are 1-5mm's between upper lower steel plate Gap；

4. the bolt for the suitable length that selection is adapted with aperture, is fastened with nut.

Claims (3)

1. a kind of device solving old box body of speed reducer bolt hole thread failure, it is characterized in that：In box body of speed reducer（1）It is outer Side and gear box end cover（2）Outside steel plate is respectively welded（3）, upper and lower steel plate（3）Holes drilled through, upper and lower through-hole correspond to, bolt （4）It is fastened again by nut across upper and lower corresponding through-hole.

2. a kind of device solving old box body of speed reducer bolt hole thread failure as described in claim 1, it is characterized in that： Upper and lower steel plate（3）Between there are gap, gap 1-5mm.

3. a kind of device solving old box body of speed reducer bolt hole thread failure as described in claim 1, it is characterized in that：Steel Plate（3）It is long to cut out double V-groove, double V-groove and box body of speed reducer to edge（1）Outside, gear box end cover（2）Outside constitute Triangle space be solder.