JPH04134477U - bolt cleaning device - Google Patents

Abstract

(57) [Summary] [Purpose] To simplify the cleaning work of large-diameter bolts used to fasten turbines, etc. [Structure] A large-diameter bolt cleaning device includes roller support means for rotatably supporting the bolt. A rotary brush means attached to a screw rod arranged parallel to the roller support means is provided, so that the roller support means and the rotary brush means can be brought into contact with and separated from each other. A rotating brush is movably attached along the screw rod,
While rotating the bolt, the brush rotates and moves in the axial direction, making it possible to clean the threaded portion of the bolt, thereby removing foreign matter adhering to the threaded portion of the bolt.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a bolt cleaning device, especially for turbines used in power plants. Bolt cleaning uses a brush equipped with a drive device to clean the threaded portion of large-diameter bolts to be fastened. Regarding equipment.

0002

[Conventional technology]

Turbine casings in power plants are fastened using large diameter stud bolts. There is. Such stud bolts are equipped with bolt tensioners to withstand high temperatures. It is concluded using. Also, use the above bolt tension during periodic inspections. After removing the bolts and inspecting the inside of the turbine, reassemble and tighten. . If there is a foreign object in the threaded part of the bolt at this time, it may cause damage to the threaded part of the casing body. The bolt screws may Work is underway to clean the area.

0003 Traditionally, this type of cleaning work used a SUS hand brush, which was held in the hand. This was done by wiping the threads of the stud bolts.

0004

[Problem that the idea aims to solve]

However, in this conventional cleaning process, the bolts are large in diameter and heavy, making it difficult to clean them thoroughly. There was a problem in that it was difficult and required a large amount of man-hours.

[0005] The purpose of this invention is to focus on the above-mentioned conventional problems, and to improve the threaded part of heavy and large diameter bolts. A bolt that is easy to clean and can efficiently remove foreign matter adhering to the To provide cleaning equipment.

[0006]

[Means to solve the problem]

In order to achieve the above object, the bolt cleaning device according to the present invention cleans large diameter bolts. the roller support means rotatably supporting the bolt; and the roller support means rotatably supporting the bolt; A rotary brush means attached to a screw rod arranged parallel to the la support means. The roller support means and the rotating brush means can be brought into contact with and separated from each other. By mounting the rotating brush movably along the screw rod, This makes it possible to clean the threaded part of the bolt. Roller support means and rotating brush hand The movement of the rollers into and out of contact with the steps can be achieved by, for example, driving the roller support means up and down using a lifting device. It may be done by. In addition, a pair of rotating brushes are provided, and these are connected with a reverse screw structure. The screw rod is fitted with a screw to rotate the screw rod. By configuring this, it is possible to realize axial movement of the rotating brush.

[0007]

[Effect]

According to the above configuration, the bolt to be cleaned is placed on the roller support means, and the mounting roller is Drive to rotate the bolt. At the same time, the rotating brush attached to the screw rod drive it close to the surface of the bolt. Then, screw the rotating brush By moving the bolt axially along the rod, the threaded part of the bolt can be Can be cleaned. In particular, moving the rotating brush in the axial direction while rotating the bolt This prevents any uncleaned areas from remaining.

[0008]

【Example】

Below, specific examples of the bolt cleaning device according to the present invention will be explained in detail with reference to the drawings. explain.

[0009] 1 and 2 are a front view and a side view of a bolt cleaning device according to an embodiment. This bolt cleaning device has a roller support that supports the stud bolt 10 to be cleaned. 12. This is supported by a pantograph mechanism 14 so that it can be raised and lowered. It has a roller casing 16. The roller casing 16 has an open top surface. The bolt 10 is placed on the four corners of the box. The lining roller 18 is rotatably supported. Therefore 4 linings The rollers 18 have the same diameter and are arranged on one side of the lower surface of the bolt 10. The growler 18 is arranged on the same axis and has two lights on a plane perpendicular to the rotation axis. The rolling rollers 18 are arranged side by side. Also, the roller casing 16 A drive motor 20 is installed inside, and this drive shaft 22 is connected to a line on the same plane. It extends below the intermediate position of the cleaning roller 18. The drive shaft 22 has a drive at both ends. A gear 24 is attached, and the gear 24 at each end is aligned with a coplanar lining groove. The driven gears 26 that are integrally attached to each of the rollers 18 mesh at the same time. Therefore, by rotating the drive motor 20, as shown by the arrow in FIG. The lining rollers 18 on the same plane are driven and placed to rotate in the same direction. The bolt 10 is rotated by the lining roller due to its own weight and the frictional force with the lining roller 18. 18.

0010 On the other hand, a gate-shaped pedestal 28 is installed on the side of the roller support means 12. This rack An arm 30 extending toward a position directly above the roller support means 12 is attached to the stand 28. A screw rod 32 is attached to this arm 30, which is It is set to be parallel to the axis of the bolt 10 placed on the roller support means 12. It is also engraved with a reverse thread, with one half having a right-hand thread and the other half a left-hand thread. Ru. A rotary motor 34 is connected to one end of the screw rod 32. This enables the screw rod 32 to be driven in rotation.

[0011] A rotating brush 36 is used to clean the stud bolt 10. This is attached to the U-shaped brush frame 38 and is attached to the shaft end of the rotating brush 36. A brush motor 40 is attached and can be rotated independently. and brush life A nut member 42 that is screwed onto the screw rod 32 is provided on the outer surface of the frame 38. installed. A pair of such rotating brushes 36 are provided, and a screw roller Nut members 42 are screwed into the reverse threaded portions of the heads 32, respectively. therefore, The pair of rotating brushes 36 rotate independently, and the screws are driven by the rotating motor 34. The rotation of the urods 32 causes the bolts 10 to move close to each other along the axial direction. It is designed to be driven so that it moves away from the camera.

0012 In the bolt cleaning device configured in this way, the bolts 10 to be cleaned are loaded in advance. It is placed on the lining roller 18 of the roller support part 12. And pantograph mechanism 1 4 to raise the roller casing 16 and rotate the lining roller 18. While moving the bolt 10, the surface of the bolt 10 is brought into contact with the rotating brush 36. on the other hand , the pair of rotating brushes 36 are brought to both ends of the screw rod 32 in advance, and the bolt The brush motor 40 is driven and rotated when the screw 10 comes into contact with the screw. The rotation motor 34 of the urod 32 is driven. The screw rod 32 is reverse threaded. Therefore, the pair of rotating brushes 36 are rotated and moved toward each other. The bolt is rotated by the rotation of the bolt 10 and the rotation and axial movement of the rotating brush 36. The threaded portion of the seat 10 is cleaned. After the cleaning process is completed, the pantograph machine The bolt 10 is lowered by the mechanism 14, and is placed above the lining roller 18 at the lowest position. Just remove it.

[0013] In the above embodiment, an example in which the bolt 10 is raised and lowered has been explained. This can be done by raising and lowering the rotating brush 36 or by swinging the gate-shaped frame 28. It is also possible to have a structure in which the bolt 10 is brought into contact with the bolt 10.

[0014]

[Effect of the idea]

As explained above, according to the present invention, there is provided a cleaning device for large diameter bolts. A roller support means for rotatably supporting the bolt, and a roller support means arranged parallel to the roller support means. a rotary brush means attached to a screw rod placed on the roller supporting means; The rotary brush means can be brought into contact with and separated from the rotary brush means, and the rotary brush can be screwed into the rotary brush means. Cleaning of the threaded part of the bolt by attaching it movably along the urod This makes it possible to recycle bolts without foreign objects adhering to their threaded parts. Cleaning work can be done extremely easily and efficiently.

[Brief explanation of the drawing]

FIG. 1 is a front view of a bolt cleaning device according to an embodiment.

FIG. 2 is a side view of the device.

[Explanation of symbols]

10 Stud bolt 12 Roller support part 14 Pantograph mechanism 16 Roller casing 18 Lining roller 20 Drive motor 32 Screw rod 34 Rotating motor 36 Rotating brush 40 Brush motor

Claims (1)

[Scope of utility model registration request] 1. A large-diameter bolt cleaning device, comprising a roller support means for rotatably supporting the bolt, and a rotating brush means attached to a screw rod arranged parallel to the roller support means, The bolt is characterized in that the roller support means and the rotary brush means can be brought into contact and separated, and the rotary brush is attached so as to be movable along the screw rod, thereby making it possible to clean the threaded portion of the bolt. cleaning equipment