JPH0455092A - Rotary supporting device - Google Patents

Abstract

PURPOSE:To improve the life on the surface of rotary supporting bodies by generating the displacing force in the direction reverse from the displacement in the axial center direction of a long sized body by a lifting means provided in one of the rotary supporting bodies for the long sized body. CONSTITUTION:The lifting means 12 which vertically displaces the supporting points on the long sized body is provided on one rotary supporting body 4 of the rotary supporting device for the long sized body 1. A means 13 for detecting the displacement of the long sized body 1 in the axial center direction is provided and a controller 14 which vertically moves the lifting means so as to generate the displacing force reverse from the displacing direction of the long sized body 1 in accordance with the results of the detection therewith is provided. The movement of the long sized body in the axial center direction with the revolution of the long sized body is prevented in this way and the friction between the rotary supporting body 4 and the long sized body 1 is decreased and the life thereof is improved.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for supporting an elongated body rotatably around the axis with the axis of the elongated body oriented substantially horizontally. The present invention relates to a rotation support device in which rotation support bodies are arranged at a plurality of locations in the longitudinal direction of the elongated body.

[Prior Art] Conventionally, in a rotation support device for an elongate body, rotation supports that rotatably support the elongate body are arranged at a plurality of locations in the longitudinal direction of the elongate body. In order to restrict movement in one direction in the axial direction as the body rotates, only a stopper is provided to abut the end of the elongated body.

[Problems to be Solved by the Invention] However, when the movement of the elongated body in one direction in the axial direction due to rotation is regulated by abutting against a stopper, a pressing force is exerted from the elongated body against the stopper. Accordingly, a reaction force from the stopper acts on the rotary support body via the elongated body. In this case, between the elongated body and the rotating support,
A large frictional force acts along the axial direction. the result,
There is a problem in that the surface of the elongated body support portion of the rotary support is rapidly worn out, shortening its life, and the rotary support must be replaced early, which is uneconomical.

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks and to provide a rotation support device that can economically prevent the elongated body from moving in one direction in the axial direction as it rotates.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides an elevating means for vertically displacing a support point for the elongated body of at least one rotary support, and A detection means for detecting the displacement of the body is provided, and based on the detection result by the detection means, the displacement direction of the elongated body along the axial direction and (
The present invention is characterized in that a control device for the lifting means is provided for displacing the support point up and down so as to generate a displacement force in the opposite direction.

[In other words, when the elongated body is displaced to one side in the axial direction due to its rotation, the detection means detects the displacement, and the control device controls the elevating means based on the detection result, A support point for the elongated body of one of the rotary supports near the displacement side of the elongated body is raised. Then, one end of the elongated body is tilted upward from the other end, and the elongated body tends to be displaced toward the outer end on the rotary support as the elongated body rotates due to a component of the elongated body's own weight. That is, a displacement force is generated in the elongated body in a direction opposite to the displacement direction along the axial direction of the elongated body.

In this way, the control device controls the vertical displacement of the support point.
This prevents the elongated body from moving as it rotates.

[Effect of the invention] Therefore, even if a stopper is not provided, the long body can be rotated.
Since the movement of one side 5 in the axial direction can be prevented, the reaction force acting on the rotating support via the elongated body can be eliminated, and wear between the rotating support and the elongated body can be reduced. It can be reduced.

That is, it is possible to slow down the progress of wear on the surface of the elongated body support part of the rotary support, thereby extending the life of the surface, and it is no longer necessary to replace the rotary support at an early stage. In addition, since the detection means detects the displacement of the elongated body in the axial direction, and the control means raises and lowers the elevating means based on the detection result, the displacement in the axial direction as the elongated body rotates. Movement can be precisely blocked. As a result, it was possible to provide a rotation support device that can economically and reliably prevent the elongated body from moving in one direction in the axial direction as it rotates.

[Example] Fig. 1 shows a cylindrical civil engineering pile (1) as a long body.
A processing device is shown that automatically butt-welds the entire circumference using an arc welder (2). The arc welding machine (2) is fixed to the ground, and welds the entire circumference of the pile (1) as a long body while rotating it with a rotating support device (3).

The rotation support device (3) rotates the pile (1) around its axis (
A rotary support (4) that supports drive rotation with the pile (P) facing in the lateral direction, and a rotation support (4) that supports the pile (1) to move in one direction in the axis (P) direction as the pile (1) rotates. , and a stopper (5) that regulates by coming into contact with the pile (1), and the rotating support (4) is rotated from the axis (P) of the pile (1).
In addition to providing the stopper (5) side by side at two locations in the direction
One end surface of the pile (1) is brought into contact with the. A roller (5D) is provided at the abutting portion of the stopper (5) against the pile (1) to ensure smooth rotation of the pile (1).
) is provided.

The rotating support body (4) includes a pair of rotating rollers (7) on the upper part of the support body (6). The pair of rollers (7) are distributed at two locations in the circumferential direction of the pile (1). Then, the motor drives and rotates the roller (7) to rotate the pile (1) on the roller (7). A wheel (9) is attached to the lower part of the support body (6), and this wheel (9) is mounted on a rail (lO) provided along the axis (P) direction of the pile (1). The pile (
1) The support interval can be freely changed along the longitudinal direction of the rail (lO). Therefore, the support interval can be adjusted accurately in a short time depending on the length of the pile (1).

Further, the wheels (9) can move up and down with respect to the support body (6), and the wheels (9) and the support body (
A spring (11) is provided between the support body (6) and the support body (6), and the pile (1) is placed on the roller (7).
) is not placed, as shown in Figure 3, the support body (6) is suspended above the ground by the spring (11) so that it can move freely on the rail (10), and the roller ( 7) When the pile (1) is placed on it, the weight of the pile (1) causes the support body (6) to descend and touch the ground, making it impossible to move on the rail.

As shown in FIGS. 1 and 2, the re-rotation support (4)
, (4), the rotating support (4) near the stopper (5) is connected to the lower support part (4A) and the upper support part (4B).
It is divided into two parts in the height direction. The upper part of the lower support part (4A) is formed into a recess, and the lower part of the upper support part (4B) is fitted into the recess so as to be slidable in the vertical direction.

A hydraulic cylinder (12) is provided in the lower support part (4A) as a means for raising and lowering the upper support part (4B),
The hydraulic cylinder (12) is driven to expand and contract to raise and lower the upper support part (4B) relative to the lower support part (4A).

As shown in FIG. 1, the stopper (5) is provided with a pressure sensor (13) as a detection means for detecting the pressure applied to the stopper (5) from the pile (1). =: (13) and hydraulic cylinder (12
) is provided with a control device (14) for the lifting means.

Then, based on the detection result of the pressure sensor (13), the control device (14) controls the hydraulic cylinder (12) to move the upper support part (4B) to a predetermined position relative to the lower support part (4A). The supporting point (Q) of the rotary support (4) relative to the pile (1) is vertically displaced by moving the pile (1) up and down by The upper support part (4B) is raised and lowered so that a displacement force of . That is, for example, when the pressure applied to the stopper (5) becomes high, the control device (14) determines that an acting force is acting to move the pile (1) toward the stopper, and the control device (14) ) by extending and driving the upper support part (4B) to raise the support point (Q
) is displaced upward to tilt the pile (1). Then, the component force of the pile (1) relative to its own weight is applied to the stopper (
5), the displacement force that tends to move the pile (1) toward the stopper (5) decreases and eventually disappears.

[Another embodiment] The rotating supports (4) may be arranged at three or more locations in the longitudinal direction of the pile (1), and among these rotating supports (4), the upper support portion ( 4B) and the lower support part (4B)
The rotating support body (4) divided into two parts (A) and (4) may not be located at the position closest to the stopper (5).

As the lifting means, instead of raising and lowering the pair of rotating rollers (7), the pile (1) may be raised and lowered by changing the distance between them. explain. As shown in FIGS. 4 and 5, the upper support part (4B) is connected to the rotating roller (7).
), and the upper support part (4B) is connected to the lower support part (4A) by a pair of rotating rollers (7).
, (7) are installed so that they can be slid independently from each other in the direction in which they are arranged side by side. A hydraulic cylinder (12) is provided between the rain upper support parts (4B), and this hydraulic cylinder (12) is provided between the rain upper support parts (4B).
The distance between the rain upper support parts (4B) can be changed by the telescopic drive of 2). Similar to the first embodiment described above, the hydraulic cylinder (12) operates based on the detection result of the pressure sensor (13).
Expansion and contraction are controlled by a control device (14).

The detection means is not limited to the pressure sensor (13), but may be of a non-contact type, and the stopper (5) may not be provided.

The elevating means is not limited to a hydraulic cylinder. Instead of the pile (1), a cylindrical support column for architectural structure may be used, and in the end, any long columnar body may be used.

The rotating device according to the present invention can be applied not only to automatic welding of the entire circumference of a long body, but also to, for example, cutting or inspecting a long body while rotating it.

Note that although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure of the drawings by the reference numerals.

[Brief explanation of the drawing]

The drawings show an embodiment according to the present invention; FIG. 1 is a front view showing a welding process state, FIG. 2 is a side view of the same, FIG. 3 is a side view of the main part, and FIG. 4 is a side view of another embodiment. FIG. 5 is a plan view of another embodiment. (1)... Long body, (4)...Rotating support, (4A)...Lower support part, (4B
)・・・・・・Upper support part, (5)・・・・・・
... Stopper, (7) ...Rotating roller (
12)...Elevating means, (13)...Detecting means, (14)...Control device, (P)...
...Axis center, (Q)...Support point.

Claims (1)

[Claims] 1. With the axis (P) of the elongate body (1) oriented substantially horizontally, the elongate body (1) is rotatable about the axis (P). The rotating support (4) to support the elongated body (1)
A rotation support device disposed at a plurality of locations in the longitudinal direction of the elongated body, the elevating means (12 ), and a detection means (13) for detecting displacement of the elongated body (1) in the direction of the axis (P),
Based on the detection result by the detection means (13), the support point ( Q
) for vertically displacing the lifting means (12) (1
4) A rotation support device provided with. 2. The rotating support (4) is provided with a rotating roller (7) that supports the elongated body (1), and the elevating means (12)
The rotating support device according to claim 1, wherein said rotating roller (7) is moved up and down. 3. A pair of rotating rollers (7) for supporting the elongate body (1) are provided on the rotary support body (4) in the radial direction of the elongate body (1), and the elevating means (12) includes: The rotation support device according to claim 1, wherein the distance between the rotation rollers (7) is changed. 4. A stopper (5) that comes into contact with the end of the elongated body (1)
is provided, and the detection means (13) detects a stopper (5) based on the displacement of the elongate body (1) along the axis (P).
The rotation support device according to any one of claims 1 to 3, wherein detects the pressure received from the elongated body (1).