CN210418961U

CN210418961U - Special tool for turning over large shaft of hydroelectric generating set

Info

Publication number: CN210418961U
Application number: CN201920833844.2U
Authority: CN
Inventors: 李咏超; 曹宜勇; 黄海; 赵改鹏
Original assignee: China Yangtze Power Co Ltd
Current assignee: China Yangtze Power Co Ltd
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-04-28
Anticipated expiration: 2029-06-04

Abstract

A special tool for turning over a large shaft of a hydroelectric generating set comprises a bolt, wherein the bolt comprises a threaded part and a screw part, the screw part of the bolt is provided with two annular bulges, the outer part of each annular bulge is sleeved with a connecting ring, one end of each connecting ring is hinged with a guard plate, and the two guard plates are detachably connected; the side of every backplate all is equipped with the wire casing, and the relative setting of wire casing of two backplates has formed the cotton rope passageway. The device can prevent the flange face edge of the large shaft from rubbing with the lifting rope, thereby reducing the risk of breakage of the lifting rope, simultaneously being beneficial to the turnover operation of the large shaft and improving the stability and the safety of lifting.

Description

Special tool for turning over large shaft of hydroelectric generating set

Technical Field

The utility model belongs to hydroelectric generator lifting device field, in particular to hydroelectric generator group macroaxis stands up special frock.

Background

In the process of overhauling a hydropower station unit, a large shaft of a hydroelectric generating set needs to be lifted out and horizontally placed, the weight of the large shaft of the hydroelectric generating set is about 100 tons, the overturning operation needs to be completed in a foundation pit after the large shaft is vertically lifted, other electrical equipment and operating personnel are arranged below and around the foundation pit at the moment, two large nuts are additionally arranged at the lower end of the large shaft, 2 steel wire ropes with the diameter of 50 phi penetrate through the nuts, and the hydropower station unit needs to be overturned by using a downstream hook of a bridge crane. This method of operation has the following safety issues:

1. because the steel wire rope is directly contacted with the edge of the flange surface of the large shaft, the sharp edge of the flange surface can cut off the steel wire rope to cause great damage;

2. the original nut is not provided with a lifting point and is inconvenient to be directly used for lifting.

SUMMERY OF THE UTILITY MODEL

In view of the technical problem that the background art exists, the utility model provides a hydroelectric set macroaxis stands up special frock can prevent the flange face edge and the lifting rope friction of macroaxis to reduce the cracked risk of lifting rope, do benefit to the macroaxis simultaneously and stand up the operation, improved the stability and the security of hoist and mount.

In order to solve the technical problem, the utility model discloses following technical scheme has been taken and has been realized:

a special tool for turning over a large shaft of a hydroelectric generating set comprises a bolt, wherein the bolt comprises a threaded part and a screw part, the screw part of the bolt is provided with two annular bulges, the outer part of each annular bulge is sleeved with a connecting ring, one end of each connecting ring is hinged with a guard plate, and the two guard plates are detachably connected; the side of every backplate all is equipped with the wire casing, and the relative setting of wire casing of two backplates has formed the cotton rope passageway.

In the preferred scheme, the connecting ring is formed by splicing two symmetrically arranged half connecting rings, arc-shaped grooves are formed in the inner walls of the half connecting rings, the two arc-shaped grooves are oppositely arranged to form annular grooves, and the annular grooves are sleeved outside the annular bulges.

In the preferred scheme, connecting blocks are respectively arranged at two ends of the half connecting ring, round holes are formed in the connecting blocks, and the round holes are used for penetrating and installing connecting bolts; the two half connecting rings are spliced through connecting bolts.

In the preferred scheme, the upper ends of the two guard plates are respectively provided with a connecting sheet, the connecting sheets on the two guard plates are oppositely arranged, and the connecting sheets are provided with round holes which are used for penetrating and installing connecting bolts.

In a preferable scheme, a round hole is formed in the lower end of the guard plate, and the round hole in the lower end of the guard plate is used for being hinged with the connecting ring.

In the preferred scheme, the round holes of the guard plate and the round holes of the two connecting blocks are hinged through the connecting bolts.

In a preferred scheme, the protective plate comprises a linear section part and an arc section part, the wire groove is positioned in the linear section part, and the round hole at the lower end of the protective plate is positioned in the arc section part.

In a preferable scheme, the edge of the guard plate positioned at the outlet of the top end of the rope channel is provided with a round corner structure.

This patent can reach following beneficial effect:

1. hooking the hook on the screw part between the two connecting rings, and then clamping and fixing the lifting rope by using the two guard plates; the guard plate can prevent the edge of the flange surface of the large shaft from rubbing with the lifting rope, so that the risk of breakage of the lifting rope is reduced; the edge of the guard plate positioned at the outlet at the top end of the rope channel in the device is provided with a fillet structure, so that the lifting rope can be protected from being abraded by sharp edges and corners; in addition, the hook is positioned between the two connecting rings, so that the stability is good, and when the large shaft turns over, the stability of the large shaft is also good;

2. this device can carry out the secondary protection to the couple part, if when the couple part breaks down the accident, the couple can not stand immediately and break away from with this device, but can be blockked by the cotton rope passage mouth between two protective plates, because the diameter of cotton rope passage is less than the couple width, the couple card is in cotton rope passage mouth department.

Drawings

The invention will be further explained with reference to the following figures and examples:

FIG. 1 is an overall structure diagram of the present invention;

FIG. 2 is a structural view of a half connecting ring of the present invention;

FIG. 3 is a structural view of the annular protrusion of the present invention;

FIG. 4 is a drawing of the connection structure of the present invention with the hook and the lifting rope;

FIG. 5 is a diagram showing the effect of the present invention in use;

fig. 6 is an effect diagram of conventional hoisting of a large shaft.

In the figure: the connecting device comprises a bolt 1, an annular bulge 2, a connecting ring 3, a half connecting ring 301, an arc-shaped groove 302, a connecting block 303, a protective plate 4, a fillet structure 401, a rope channel 5, a wire groove 501, a connecting sheet 6, a hook 7, a lifting rope 8 and a large shaft 9.

Detailed Description

The preferable scheme is as shown in fig. 1 and fig. 3, the special tool for turning over the large shaft of the hydroelectric generating set comprises a bolt 1, wherein the bolt 1 comprises a threaded part and a screw part, the screw part of the bolt 1 is provided with two annular bulges 2, the outer part of each annular bulge 2 is sleeved with a connecting ring 3, one end of each connecting ring 3 is hinged with a guard plate 4, and the two guard plates 4 are detachably connected; a wire groove 501 is formed in the side surface of each guard plate 4, and the wire grooves 501 of the two guard plates 4 are oppositely arranged to form a wire rope channel 5;

as shown in fig. 4 and 5, the threaded portion of the bolt 1 is used for connecting to a large shaft 9 of a hydroelectric generating set, the two annular protrusions 2 are used for connecting the hook 7, and after the hook 7 is installed, the two protective plates 4 are used for clamping and fixing the lifting rope 8, so that the hook 7 is always positioned between the two connecting rings 3, and a lifting point is created for the hook 7.

Further, as shown in fig. 1 and fig. 2, the connection ring 3 is formed by splicing two symmetrically arranged half connection rings 301, the inner walls of the half connection rings 301 are respectively provided with an arc-shaped groove 302, the two arc-shaped grooves 302 are oppositely arranged to form an annular groove, and the annular groove is sleeved outside the annular protrusion 2;

the connecting ring 3 is sleeved outside the annular bulge 2, so that the rotation of the bolt 1 is not influenced on the premise that the connecting ring 3 cannot move left and right; the connecting ring 3 is formed by splicing two symmetrically arranged half connecting rings 301, so that the device can be conveniently assembled.

Further, as shown in fig. 1 and 2, two ends of the half connecting ring 301 are respectively provided with a connecting block 303, and the connecting block 303 is provided with a round hole for inserting a connecting bolt; the two half coupling rings 301 are spliced by coupling bolts (not shown in fig. 1, only the circular hole structure is shown).

Further, as shown in fig. 1, the upper ends of the two guard plates 4 are both provided with connecting pieces 6, the connecting pieces 6 on the two guard plates 4 are arranged oppositely, and the connecting pieces 6 are provided with round holes for penetrating connecting bolts.

Further, a round hole is formed in the lower end of the protection plate 4, and the round hole in the lower end of the protection plate 4 is used for being hinged with the connecting ring 3;

because be used for pressing from both sides tight lifting rope 8 between two backplate 4, for the convenience operation, then articulated backplate 4 one end and connecting block 303, backplate 4 can the free rotation, then when lifting rope 8 placed in line rope passageway 5, passes through bolted connection with connection piece 6 on two backplate 4 again.

Further, the round holes of the guard plate 4 are hinged with the round holes of the two connecting blocks 303 through connecting bolts; the connecting bolt can adopt a structure similar to the bolt 1, namely the front end of the screw rod is provided with threads, and the rear end of the screw rod is a polished rod part, so that after the screw cap is fastened with the connecting bolt, the screwing-in depth of the screw cap is limited, and the screw cap cannot rotate when rotating to the deepest thread scale, so that the pre-tightening force between the guard plate 4 and the two connecting blocks 303 cannot be large, and the guard plate 4 can rotate due to the need.

Further, the guard plate 4 comprises a straight line section part and an arc section part, the wire casing 501 is located at the straight line section part, and a round hole at the lower end of the guard plate 4 is located at the arc section part; the design mainly takes into account that the width of the lifting rope 8 does not exceed the distance between the two connection rings 3, so that the straight section of the cover plate 4 is drawn towards the middle, so that the rope channel 5 is located at a position between the two connection rings 3.

Further, the edge of the guard plate 4 at the outlet of the top end of the rope channel 5 is provided with a fillet structure 401; the design mainly avoids the sharp-angled structure damaging the lifting rope 8 when the lifting rope 8 rubs against the guard plate 4.

The operation steps of the whole apparatus are as follows in the description of fig. 5 and 6:

before the device is used for the first time, the two half connecting rings 301 are spliced outside the annular bulge 2, one ends of the two half connecting rings 301 are hinged with the protective plate 4, the whole device is initially assembled, and the connecting ring 3 does not need to be disassembled after the device is used;

the bolt 1 is arranged in a bolt hole of the large shaft 9, and when the bolt 1 rotates, the connecting ring 3 cannot influence the rotation of the bolt 1;

hooking the hook 7 on the screw part of the bolt 1 between the two connecting rings 3, clamping the lifting rope 8 by using the two guard plates 4, and fixing by using the connecting bolt; the guard plate 4 can prevent the flange surface edge of the large shaft 9 from rubbing with the lifting rope 8; in addition, the hook 7 is positioned between the two connecting rings 3, so that the stability is better, and when the large shaft 9 turns over, the stability of the large shaft 9 is also better.

Claims

1. The utility model provides a hydroelectric set macroaxis stands up special frock, includes bolt (1), and bolt (1) includes screw thread part and screw rod part, its characterized in that: the screw part of the bolt (1) is provided with two annular bulges (2), the outer part of each annular bulge (2) is sleeved with a connecting ring (3), one end of each connecting ring (3) is hinged with a guard plate (4), and the two guard plates (4) are detachably connected; the side of each guard plate (4) is provided with a wire groove (501), and the wire grooves (501) of the two guard plates (4) are oppositely arranged to form a wire rope channel (5).

2. The special tool for turning over the large shaft of the hydroelectric generating set according to claim 1, which is characterized in that: the connecting ring (3) is formed by splicing two symmetrically arranged half connecting rings (301), the inner walls of the half connecting rings (301) are respectively provided with an arc-shaped groove (302), the two arc-shaped grooves (302) are oppositely arranged to form an annular groove, and the annular groove is sleeved outside the annular bulge (2).

3. The special tool for turning over the large shaft of the hydroelectric generating set according to claim 2, wherein the special tool comprises: connecting blocks (303) are respectively arranged at two ends of the semi-connecting ring (301), round holes are formed in the connecting blocks (303), and the round holes are used for penetrating connecting bolts; the two half connecting rings (301) are spliced through connecting bolts.

4. The special tool for turning over the large shaft of the hydroelectric generating set according to claim 1, which is characterized in that: connecting pieces (6) are arranged at the upper ends of the two guard plates (4), the connecting pieces (6) on the two guard plates (4) are arranged oppositely, round holes are formed in the connecting pieces (6), and the round holes are used for penetrating and installing connecting bolts.

5. The special tool for turning over the large shaft of the hydroelectric generating set according to claim 1, which is characterized in that: the lower end of the guard plate (4) is provided with a round hole, and the round hole at the lower end of the guard plate (4) is hinged with the connecting ring (3).

6. The special turning tool for the large shaft of the hydroelectric generating set according to claim 3 or 5, which is characterized in that: the round hole of backplate (4) is articulated through connecting bolt simultaneously with the round hole of two connecting blocks (303).

7. The special turning tool for the large shaft of the hydroelectric generating set according to claim 1 or 5, which is characterized in that: the protective plate (4) comprises a straight line section part and an arc section part, the wire groove (501) is located in the straight line section part, and a round hole in the lower end of the protective plate (4) is located in the arc section part.

8. The special tool for turning over the large shaft of the hydroelectric generating set according to claim 1, which is characterized in that: the edge of the guard plate (4) positioned at the outlet of the top end of the rope channel (5) is provided with a fillet structure (401).