JPH0234734B2 - - Google Patents

Description

Detailed Description of the Invention "Industrial Application Field" The present invention is applicable to the distal end side of a moving body such as a boom whose proximal end side is supported by a support device and which is moved longitudinally and vertically by the support device. The present invention relates to a guide and support device for a moving body that guides and supports a moving body.

``Prior Art'' Generally, when grinding a weld bead extending in the longitudinal direction of the inner surface of a cylindrical body such as a heat exchanger shell, a reaction vessel, or a distillation column, a grinding device equipped with a grinding wheel is used to grind a cylindrical body. It must be inserted into the body and moved along the length of the cylindrical body while grinding. A grinder device suitable for use in finishing the grinding of such a cylindrical body is, for example, one in which the base end of a horizontal boom is attached to a support device so as to be able to move up and down, and a grinding device is provided at the tip of the boom. According to this grinder device, after the cylindrical body is placed in a horizontal position, the vertical position of the boom and the position of the support device are adjusted, the grinding device is inserted into the inside of the cylindrical body, and the support device is The grinding device can be further moved along the longitudinal direction of the cylindrical body to proceed with the grinding.

``Problems to be Solved by the Invention'' However, in the case of a grinder device having the above structure, the boom is supported by a support device located outside the cylindrical body at its base end, and by a support device located outside the cylindrical body at its distal end. Since it must be inserted into the interior, the structure is long and cantilevered, corresponding to the length of the cylindrical body. For this reason, when the boom moves vertically or longitudinally, its tip side swings vertically and horizontally, which may result in inaccurate positioning of the grinding device.

The present invention was made in view of the above circumstances, and
It is an object of the present invention to provide a guide and support device for a movable body such as a boom in the above-mentioned grinder device, which suppresses shaking during movement of the movable body and smoothly guides the movable body.

"Means for Solving the Problems" In order to achieve the above object, the present invention provides a movable body such as a boom whose proximal end is supported by a support device and which is moved longitudinally and vertically by the support device. A guide and support device for a movable body that guides and supports a distal end side of the movable body includes: a column extending in the vertical direction provided at intervals on the side of the movable body; a guide ring rotatably attached to the column; and the guide. A rope such as a rope hung on a ring, a balance weight attached to one end of the rope, balance weight guide members provided along the vertical direction on both sides of the balance weight, and other parts of the rope and a holder that holds the distal end side of the movable body attached to the end so as to be movable in the longitudinal direction thereof,
The holding body includes side plates arranged opposite to each other on both sides of the movable body, a guide wheel rotatably attached to the side plate and fitted with the support column to rotate in the vertical direction, and a lower part of the movable body. The movable body is configured to include a support roller that is brought into contact with the moving body, and a presser roller that is brought into contact with the upper part of the moving body.

"Operation" When the movable body of the present invention is held in a stopped state at a certain position, the holding body is also held at a fixed position due to balance with the balance weight.

When the movable body is moved in the longitudinal direction by the support device, if the distal end of the movable body is moved without shaking, the holder is held at the above position, and the movable body and the holder are separated. There is no load fluctuation during this time, and the movement is smooth due to the guidance of the holding roller and support roller of the holder.

On the other hand, when shaking is about to occur, a load is applied from the movable body to a portion of the holding body located forward in the direction of the shaking, and the holding body tends to be moved in the direction of the shaking.

If the direction of this shaking is in the vertical direction, the holding body is held in equilibrium in relation to the balance weight, so the reaction force against the above load acts on the moving body via the holding body. However, the shaking of the moving body is thereby attenuated.

Moreover, when the above-mentioned shaking is in the left-right direction, the load applied to the holding body due to this shaking is supported by the pillars via the side plates, and the shaking is restrained.

Furthermore, when the movable body is moved vertically by the support device, the holding body is moved following the vertical movement of the movable body, but the balance is maintained by a balance weight, and the holding roller and support Rollers and guide wheels ensure smooth movement and stopping.

If the distal end of the movable body oscillates after the vertical movement of the movable body is stopped, the oscillation is attenuated or restrained by the same effect as described above.

"Embodiment" Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 4 shows a state in which a weld bead B extending in the longitudinal direction of the inner surface of a shell S of a heat exchanger placed on a turning roll device T is being ground and finished by a grinder device G. A guide support device A, which is an embodiment of the present invention, is attached to the grinder device G.

First, to explain the outline of the grinder device G, 1 in the figure has a pair of left and right rails 2, 2 parallel to each other laid on the top, and the center line of the pair of rails 2, 2 is aligned with the center of the turning roll device T. This is a base installed on the shōgami so that it is an extension of the line. On the rails 2, 2 of this base 1, a self-propelled cart (supporting device) 4 is provided with a column 3 at the top.
A saddle 6 is mounted on the column 3 of the self-propelled trolley 4 and is moved up and down by a hydraulic cylinder 5. A horizontal boom (moving body) is mounted on the saddle 6, and a balance weight 7 is provided at the base end of the saddle 6.
The proximal end of the boom 8 is fixedly attached, and a grinding device 9 is attached to the tip of the boom 8 so that a grinding wheel 9b is rotated by a drive motor 9a. And hydraulic cylinder 5
The height of the boom 8 is adjusted by operating the self-propelled trolley 4.
The grinding device 9 is moved along the rails 2, 2 to move the boom 8 in its longitudinal direction, thereby adjusting the position of the grinding device 9.

Next, the guide support device A is
Referring to the figure, reference numeral 10 denotes columns 11, 1 made of a pair of left and right channel members, which are erected at the front end of the base 1 with their groove sides facing outward.
1, and an upper frame 12 connected to the upper ends of the support columns 11, 11. A pair of guide wheels 13, 13, which are rotatable in the same vertical plane along the left-right direction, are provided at the upper part of each support column 11, 11 of this frame 10,
Each pair of guide wheels 13, 13 has one end 1
4a, 14a extend to the outer side of each support 11, 11, and each other end 14a, 14b extends to the inner side of each support 11, 11.
4 is hung on each end 14a, 14a of each wire rope 14, 14,
Balance weights 15, 15 are fitted into grooves (balance weight guide members extending vertically on both sides of the balance weights) of the respective support columns 11, 11, respectively.

Further, the boom 8 of the grinder device G is suspended from the frame 10 by the other ends 14b, 14b of the wire ropes 14, 14 via the connecting members 16, 16, and the distal end side of the boom 8 of the grinder device G is moved in the longitudinal direction. A holding body 17 that is freely held is attached so as to be movable up and down. This holding body 17 includes a pair of left and right side plates 20, 20, each of which has a pair of rotatable front and rear support rollers 19, 19 on its inner surface that is brought into contact with the boom 8 from above;
a pair of front and rear guide rollers 21, 21, which are rotatably attached to the front and rear ends of the boom 20 with their axes facing up and down, and which come into contact with and guide the outer surface of the boom 8;
It is rotatably attached to the upper and lower parts of the outer surface of each of the side plates 20, 20 with the axis horizontally directed back and forth, and each support column 11, 1 is attached to the flange part 22a, 22a of the wheel body
It is comprised of a pair of upper and lower guide wheels 22, 22, which move up and down by rolling abutting against the inner side surfaces of the respective pillars 11, 11 while sandwiching the rod 1 from the front and rear.

The boom 8 has a rectangular tube shape, and upper sliding members 8a, 8a, whose upper and outer surfaces are machine-finished and serve as sliding surfaces, are provided at the upper portions of the left and right sides on the tip side. Similar lower sliding members 8b, 8b whose lower end faces and outer end faces are machine-finished are attached to the lower portion thereof, and the above-mentioned respective pressers are attached to these sliding members 8a, 8b. roller 18,
18, each support roller 19, 19, and each guide roller 21, 21 come into contact with each other.

When the boom 8 of the grinder device G is moved up and down by the hydraulic cylinder 5, the tip side of the boom 8 moves up and down while shaking due to its own weight, and the self-propelled cart 4 is also prevented from traveling. When the boom 8 is moved in its longitudinal direction, the tip side of the boom 8 tends to swing vertically and horizontally. However, the tip side of the boom 8 is supported by a guide support device A. The structure is such that it can be freely moved up and down, and the balance weight 15,
Since it is held by the holder 17 which is balanced by the holder 15 and prevented from shaking, almost no shaking occurs when it is moved. In addition, the holding body 17 has collar portions 22a, 22a to prevent vibration in the front and back direction.
Guide wheels 22, 22 are provided to prevent movement in the vertical direction and to smooth the movement in the vertical direction.
Since the holding body 17 is fitted into the groove and there is no vibration during vertical movement, the vertical movement of the holder 17, that is, the vertical movement of the boom 8, is made even smoother. Furthermore, the movement of the boom 8 in the longitudinal direction is extremely smooth because its top and bottom surfaces are guided by press rollers 18, 18 and support rollers 19, 19, and its left and right sides are guided by guide rollers 21, 21, respectively. done to.

By the way, in the above, the grinder device G
Although the guide support device A for supporting the boom 8 has been described, it goes without saying that the device according to the present invention can be used to guide and support other moving objects.

"Effects of the Invention" As explained above, the guide support device for a movable body of the present invention includes a vertically extending support provided at intervals on the side of the movable body, and a support that is rotatably attached to the support. A guide ring, a cable such as a rope hung on the guide ring, a balance weight attached to one end of the cable, and balance weight guide members provided vertically on both sides of the balance weight. and a holder that is attached to the other end of the cable and holds the distal end side of the movable body so as to be movable in the longitudinal direction thereof, the holder being arranged oppositely on both sides of the movable body. a side plate rotatably attached to the side plate, a guide wheel that rotates in the vertical direction by fitting with the support column rotatably attached to the side plate, a support roller that is brought into contact with a lower part of the moving body, and an upper part of the moving body. Since the structure includes a presser roller that is brought into contact with the presser roller, the following excellent effects can be achieved.

When the movable body moves in the vertical direction, the holding body has a side plate and a guide wheel structured to prevent swinging in the longitudinal direction and smoothly move in the vertical direction, and is balanced by a balance weight. Since the balance weight is also restrained from swinging in the longitudinal direction, the movement of the moving body can be stopped extremely smoothly.

When moving the moving object in the longitudinal direction, the holding body guides and supports the moving object using the side plates, support rollers, and presser rollers, and at the same time is prevented from moving in the longitudinal direction, so the movement is extremely slow. done smoothly.

When the movable body moves up and down, shaking occurs in the vertical direction, and when it moves in the longitudinal direction, it shakes in the vertical and horizontal directions. , movement in the longitudinal direction and left-right direction is prevented by the support, and the balance is maintained by a balance weight. In addition, this balance weight is also restrained from swinging in the longitudinal direction, causing pendulum movement. Therefore, the reaction force of the holding body that resists the shaking force of the movable body acts effectively, and the shaking in the vertical and horizontal directions can be attenuated in an extremely short time.

This makes it possible to reliably prevent vibration when moving the movable body in the longitudinal direction or vertical direction.Moreover, when moving the movable body in the vertical direction for positioning, the holding body can be smoothly moved. When following and moving in the longitudinal direction, the moving body moves smoothly, and the positioning work can be performed smoothly. Therefore, it can be effectively used in a grinder device for grinding the inner surface of a cylindrical body.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a front view, Fig. 2 is a side view, Fig. 3 is a sectional view taken along the - arrow in Fig. 1, and Fig. 4 shows a guide support device in a grinder. FIG. 2 is a side view showing a state in which the device is attached to the device. 4... Self-propelled trolley (support device), 8... Boom (moving body), 10... Frame, 13... Guide wheel, 14... Wire rope (rope body), 15... Balance weight, 17... holding body.

Claims (1)

[Claims] 1. In a guide support device for a movable body that guides and supports the distal end side of a movable body such as a boom whose proximal end is supported by a support device and is moved longitudinally and vertically by the support device, a guide support device is provided on the side of the movable body. A pillar along the vertical direction provided at intervals, a guide ring rotatably attached to the pillar,
A cable such as a rope hung on the guide ring, a balance weight attached to one end of the cable, and balance weight guide members provided vertically on both sides of the balance weight.
a holder attached to the other end of the cable body that holds the distal end side of the movable body movably in the longitudinal direction thereof, the holder includes side plates disposed opposite to each other on both sides of the movable body; , a guide wheel that is rotatably attached to the side plate and rotates in the vertical direction by fitting with the support column; a support roller that is brought into contact with the lower part of the moving body; and a support roller that is brought into contact with the upper part of the moving body. A guide support device for a movable body, comprising a presser roller.