JPH071321A - Bolt polishing device - Google Patents

Abstract

PURPOSE:To efficiently and sanitarily polish a bolt by polishing the bolt by means of the brush attached to a turning belt and also collecting the dust produced due to polishing while the bolt is made to roll along a rail by means of a rolling device. CONSTITUTION:In order to polish a bolt 3, first of all, a changing device 9 is operated to adjust the width of the rail 2 provided in a frame 1 and a rolling device 4 to the bolt 3. A second handle 20 is rotated to adjust the width of a belt 17 to the screw thread section of the bolt 3. In addition, a third handle 28 is rotated to adjust the height of the belt 17 and the position of a wire brush 18 to the bolt 3. A switch 43 is operated to make the rolling device 4 and belt 17 function to feed the bolt 3 from an inlet port. In the next step, while the bolt 3 is made to roll toward an outlet port on the rail 2, the screw thread section of the bolt 3 is polished by the wire brush 18 of the belt 17 which is turned to the direction of arrow A17. In the next step, the dust produced during polishing is sucked from the small hole 41 of a pipe 40 to be collected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bolt grinder used for inspecting and reassembling bolts such as large diameter bolts used in turbines in nuclear power plants.

[0002]

2. Description of the Related Art Bolts such as large bolts conventionally used for turbines in nuclear power plants are removed at the time of regular inspections in order to remove the seizure preventive agent applied to the threaded portions. Perform polishing.

In this case, as shown in FIG. 7, a bolt b is horizontally placed on a base a, and the wire brush c is manually reciprocated while being manually rolled to be ground. d shows a screw thread part. Alternatively, the wire wheel e may be replaced by a motor f operated by compressed air.
Attach to and polish.

Further, as shown in FIG. 8, a bolt b is vertically attached to an upright base g, and a wire wheel h is attached to a motor i driven by compressed air for polishing.

[0005]

However, the prior art is manual work as described above, and the work efficiency cannot be improved. In addition, it is inevitable for workers to work in an environment where dirt and dust are generated.

The present invention has been made in order to solve such a problem, and its purpose is to greatly improve the efficiency as compared with the above-mentioned prior art, to save labor, and to prevent generation of dust. It is to provide a bolt grinder capable of working in a safe environment.

[0007]

The present invention, which achieves the above-mentioned object, is described as follows: a rail 2 for mounting a bolt 3 and a bolt 3 on the rail 2 which are provided on a frame 1 with a variable width. Rolling device 4 for moving; having a wire brush 18 provided corresponding to the rail 2,
An endless belt 17 connected to a drive unit; the endless belt 1 having a variable width and vertically movable
The bolt grinder is characterized by comprising 7; In addition, the endless belt 17 having the wire brush 18 is provided in the vicinity of the pipe 4 with a large number of small holes 41 communicating with the dust collector.
0 is the bolt polisher. Wire brush 1
Reference numeral 8 denotes the bolt grinder which is detachably attached to the belt 17.

[0008]

This bolt grinder is constructed as described above, so that the width of the rail 2 and the rolling device 4 is first adjusted to the desired bolt 3, and then the belt 1 of the wire brush 18 is adjusted.
The width of 7 is adjusted to the bolt 3, and the wire brush 18
When the height of the belt 17 is adjusted to the bolt 3 placed on the rail 2 and the desired bolt 3 is supplied to the rail 2, the bolt 3 is rolled on the rail 2 by the rolling device 4. Further, the brush 18 of the rotating endless belt 17 is ground, and the dust generated by the grinding is collected and ground.

Therefore, the work efficiency of the bolt polishing is greatly improved, and the dust generated during the polishing work is collected to make a hygienic working environment.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 is a frame, 2 is a rail on which a bolt 3 is mounted, 4 is a rolling device for the rail 3 provided inside the rail 3, and is driven by a sprocket 5. The bolt 3 can be rolled by a T-shaped metal fitting 7 provided on the chain 6. The sprocket 5 is axially supported by the frame 1, and the chain 6 is interposed between the sprocket 5 and the other sprocket which is not shown in the figure.
Of course, and its drive device is not shown.

The rolling device 4 is formed so that a T-shaped metal fitting 7 provided inside the rail 2 as shown in the drawing protrudes from an elongated hole 8 (FIG. 2) formed in the rail 2 and rolls. However, it does not matter if the outer rolling device 4 is provided outside the rail 2.

Next, 9 is a device for changing the width of the rail 2. When the first handle 10 is rotated, the first sprocket 11, the first chain 12, and the second sprocket 13 are rotated, and the first, The second sprockets 11 and 13 rotate,
The screw shaft 1 of the first and second sprockets 11 and 13
Screwing members 15 and 15 of the rail 2 screwed to 4 and 14
Moves one of the rails 2 so that the rail 2
The width of can be changed arbitrarily.

Next, 17 is two endless belts provided corresponding to the rails 2 and having a wire brush 18, which are formed in a caterpillar shape. Reference numeral 19 denotes a transmission wheel, which is pivotally supported by the frame 1, and the other three transmission wheels are not shown in the figure.

A drive device (not shown) is provided inside the transmission wheel 19 to drive the transmission wheel 19. And this belt 17 is also the second handle 2
By rotating 0, one belt 17 moves toward or away from the other immovable belt 17 like the rail 2.

Reference numerals 21 and 22 denote third and fourth sprockets, and 2
3 indicates the second chain. Reference numeral 24 is a screwing member of the belt 17 screwed to the second screw shaft 25 of the third and fourth sprockets 21 and 22, and is rotated by the rotation of the second screw shafts 25 and 25. One of the belts 17 rolls together with the transmission wheel 19 corresponding to the moving rail 2, whereby the widths of the two belts 17, 17 are changed.

Reference numeral 16 is a first scale indicating the amount of movement of the rail 2, and 26 is a second scale indicating the amount of movement of the belt 17.

Next, 27 is a vertical movement device for the belt 17, and by rotating the third handle 28, the wire 32 provided on the drum 31 of the worm gear 30 engaged with the worm 29 is wound up or down. As a result, the machine frame 33 provided with the belt 17 moves up and down.

Reference numeral 34 is a fifth sprocket provided on the shaft of the worm gear 30 and is engaged with a third chain 35. One end of the third chain 35 is connected to the machine frame 3
3 and the other end is connected to the balance weight 36. 37 is a lamp.

Next, reference numeral 38 (FIG. 2) is a cover, which is formed so as to cover the frame 1. 39 is bolt 3
And an almost similar outlet is formed on the opposite side of the frame 1. The inlet 39 and the outlet can be used in reverse.

Besides the inlet 39 and the outlet, the frame 38 is covered with the cover 38. In addition, as described above, the rolling directions of the rolling device 4 and the belt 17 are of course reversed when they are used in reverse.

Next, 40 is an angular pipe provided in the machine frame 33, and a large number of small holes 41 are formed in the lower part thereof, and the pipe 40 extends along the belt 17 in the machine frame 33. Are provided on both sides of the pipe 40, and the pipe 40 communicates with a dust collector (not shown) from the dust collection port 42. 43 is a switch for actuation or illumination, and 44 is a sight glass.

In FIG. 2, reference numeral 45 is a scale indicating the position of the machine frame 33, 46 is a base, and 47 is a thread portion of the bolt 3.

Next, in FIG. 4, 17 is the belt, and 48 is a rotating plate thereof, which is made of rubber as an example, on which a fixing plate 49 is fixed by bolts 50, A frame-shaped holding portion 52 is provided, and a comb-shaped brush 55 having a brush 54 is inserted into a base portion 53 (FIG. 3) as shown in FIG.
It is fixed by press-fitting the spring 56 between the nine.

Both the spring 56 and the comb-shaped brush 55 are detachable by moving in the axial direction. As another method, it is also formed as shown in FIG.

In the figure, reference numeral 58 denotes a support plate which is erected on a fixed plate 49 and has a large number of projections 59. The fitting portions 61 of the brush element 60 are fitted into the projections 59 and the outside thereof. Reference numeral 64 (FIG. 5) covering the cover plate 62 from above and fixing it with screws 63 (FIG. 6) shows a notch for holding.

The operation of the polishing machine of this embodiment will be described. First, the width of the belt 17 is adjusted by adjusting the width of the rail 2 and the rolling device 4 to the intended bolt 3 using the changing device 9. The second handle 20 is turned to correspond to the thread portion 47 of the bolt 3, and the third handle 28 is operated to adjust the height of the belt 17, and thus the wire brush 18.
Is adjusted to the bolt 3 and a dust collector (not shown) following the dust collecting port 42 is operated to move the rolling device 4 and the belt 17
Is operated by the switch 43, and the bolt 3 is supplied from the inlet 39.

Then, the bolt 3 is rolled on the rail 2 in the exit direction, and the thread 47 is ground by the wire brush 18 of the belt 17 which rotates in the direction of arrow A17. Then, the dust and the like generated at that time are sucked from the small hole 41 of the pipe 40 and collected by a dust collector (not shown).
Then, the bolt 3 is polished and discharged from the outlet.

[0028]

Since the present invention is constructed as described above, it is possible to greatly improve the work efficiency as compared with the manual work of the conventional example. Further, it is possible to carry out the polishing work in a hygienic environment that is not damaged by dust and the like.

[Brief description of drawings]

FIG. 1 is a diagram showing an outline of a bolt grinder according to an embodiment of the present invention.

FIG. 2 is a detailed view of a portion of FIG.

FIG. 3 is a perspective view of a comb brush used in the apparatus of FIG.

4 is a perspective view of a brush member used in the device of FIG. 1. FIG.

FIG. 5 is an exploded view of a brush member according to another embodiment of the present invention.

FIG. 6 is a perspective view of the brush member shown in FIG.

FIG. 7 is a schematic view of a conventional bolt polishing method.

FIG. 8 is a schematic view of a conventional bolt polishing method different from FIG. 7.

[Explanation of symbols]

 1 Frame 2 Rail 3 Bolt 4 Rolling Device 17 Belt 18 Wire Brush 40 Pipe 41 Small Hole

Claims (3)

[Claims] 1. A rail 2 having a width changeable on a frame 1, on which a bolt 3 is mounted, and a rolling device 4 for rolling the bolt 3 on the rail 2; The rolling device 4 being provided corresponding to the rail 2. Also, a bolt comprising an endless belt 17 having a wire brush 18 and connected to a drive unit; the endless belt 17 having a variable width and vertically movable. Polishing machine. 2. An endless belt 17 having a wire brush 18 is provided in the vicinity thereof with a large number of small holes 4 communicating with a dust collector.
A bolt grinder as claimed in claim 1, having a tube 40 forming 1. 3. The bolt grinder according to claim 1, wherein the wire brush 18 is detachably attached to the belt 17.