JPS6218953Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of an annular rotating device, such as an annular rotary furnace commonly referred to as a circular grate.

An annular rotary furnace is used as a continuous processing device for sintering iron ore, cooling red-hot coke, etc. Conventionally, this type of rotating device for an annular rotating body has a center bearing as shown in Figure 1. A rotating system is used. FIG. 1 shows a simplified partial plan view. In the figure, reference numeral 1 denotes an annular rotating body connected to a center bearing 2 located at the center via a plurality of frames 3 extending radially from the bearing. So, this annular rotating body 1
is capable of rotating on an annular rail laid horizontally via a plurality of support rollers provided on its lower surface. Since this type of swivel device has the frame 3 as described above, when the equipment becomes larger, the space inside the annular rotating body 1 is occupied by the frame 3, which poses a problem in effectively utilizing this space. There were also problems such as an increase in the weight of the frame. Therefore,
As shown in FIGS. 2 and 3, a so-called centerless type rotating device without a bearing at the center of rotation has been devised. Figure 2 is a plan view and Figure 3 is a plan view.
The figure is a cross-sectional view. The structure of this turning device is similar to that shown in FIG.
It is rotatably supported on an annular rail 5 via a plurality of support rollers 4 provided at equal pitches on its lower surface, but there is no center bearing 2 and frame 3 as in the center bearing method.
Instead, a large number of sturdy columns 6 for supporting the centering rail are arranged on the inner circumferential side of the annular rotating body 1, and on the outer surface of these columns 6, an annular guide rail 7 is arranged along with a rail support plate 8. Supported. On the other hand, a large number of guide rollers 9 are provided at equal pitches on the inner circumference of the annular rotating body 1, facing the guide rail 7.
and the guide rail 7 (Note: The driving means of the annular rotating body 1 is the same as the embodiment of the present invention (Figs. 6 to 8) described later), and the annular rotating body 1 is guided by the rail 7. The rotating body 1 moves in a circular motion,
Due to the difficulty in ensuring the mounting accuracy of the rail 7, uneven mounting precision of the roller 9 to the rotating body 1, thermal expansion when the material processed by this device is at high temperature, etc., the smoothness of the rotating body 1 may be In order to ensure turning, a fairly large gap C (shown in FIG. 3) of, for example, about 10 mm must be provided between the rail 7 and the roller 9. However, due to the existence of this gap C, the rotating body 1 does not turn in a perfect circular trajectory, but performs a meandering motion like a so-called hula hoop around the circumference of the rail 7 as a reference axis. . Here, as methods for fixing the support roller 4 to the rotating body 1, there are a fixed type as shown in FIG. 4 and a so-called caster type as shown in FIG. The roller shown in FIG. 4 is fixed to the rotating body 1 using a support beam A ₁ and a spring A ₂ as an intervening member so that the rotational direction of the supporting roller 4 does not change relative to the rotating body 1. The roller shown in Fig. 5 has a pin B ₁ and a slide bearing B ₂ ( _one of which is fixed to the rotating body 1, the other to the support beam A ₁ ,
They have surfaces that rub against each other. ), etc., to the rotating body 1, and the support roller 4 is made swingable around the pin _B1 .
(Utility Application No. 58-54750) Now, in the roller shown in FIG. 4, there is an angular difference between the traveling direction of the rotating body 1 and the rolling direction of the support roller 4 with respect to the meandering motion described above. 4 causes sideslip and abnormal wear. Furthermore, since the rollers shown in FIG. 5 are designed to be able to swing, even if there is an angular difference between the advancing direction of the rotating body 1 and the rotating direction of the support roller 4, the thrust force in the width direction of the support roller 4 will cause the above-mentioned Perform an action to change the position in the direction that makes the angular difference 0. However, the rollers have slide bearings to receive the load.
Since B ₂ is required, a resistance force is generated on the slide bearing B ₂ surface, and the resistance force is in the opposite direction to the widthwise inward thrust of the roller 4 described above. Laura does not follow.
In this state, similar to the roller shown in FIG. 4, sideways sliding occurs and abnormal wear occurs. In any case, the more violent the meandering motion of the rotating body 1, the greater the amount of lateral slippage of the support roller 4, and the more rapidly the wear progresses.
This also causes wear and tear on the rail 5, leading to problems with premature service life. Furthermore, since the roller shown in Fig. 5 has the ability to follow meandering motion, it can be said that it is superior to the roller shown in Fig. 4 in terms of wear, but since there is no restraining force on the rail 5, a slight external force is applied. However, the rollers move easily, that is, the rotating body 1 supported by the support rollers 4 is very easy to move. Therefore, for example, when an earthquake occurs, the rotating body 1 moves due to the resulting external force, and inertia force is applied to the rotating body 1, which may collide with the guide rail 7 and destroy it.

The present invention was proposed to solve the above-mentioned conventional problems, and its gist is that it is an annular rotating device that restricts the gap between the guide roller 9 and the guide rail 7 at a specific position of the rotating body 1. be.

Hereinafter, a detailed explanation will be given based on examples.

FIG. 6 is a plan view showing an embodiment according to the present invention;
FIG. 7 is a cross-sectional view, and FIG. 8 is an enlarged view of section A. In these figures, 1 is an annular rotating body as described above, and a large number of guide rollers 9 are arranged on the inner circumferential side thereof, and support rollers 4 for supporting the rotating body 1 are arranged below it. is fixed.
Other structural conditions such as the guide rail 7, rail support plate 8, support column 6, and annular rail 5 are the same as those of the conventional device described above. As shown in FIG. 7, this example uses a red-hot coke cooling device, but a container for processing these powdered lumps is fixed and integrated with the annular rotating body 1. . Note that 10 is a cylinder for driving the annular rotating body 1. Normally, this type of device only needs to be rotated at a very low speed, for example, 1 hour per revolution, so in this example, a ratchet mechanism is used. It is rotated by the reciprocating movement of the cylinder head.

Next, part A is a pressure mechanism, and the pressure roller 11
The annular rotating body 1 is pressed against the annular rail 5 via the rail 12, and the gap between the guide roller 9 and the annular rail 5 is restrained. To explain the structure of part A, numeral 13 is a pedestal installed at a specific location, and a guide mechanism 14 and a cylinder 15 are installed on the pedestal 13. Guide mechanism 14
consists of a shaft 14A and a support member 14B that slidably includes the shaft 14A;
A is restrained by the support member 14B and can only move in the horizontal direction of the drawing. 16 is the shaft 14A and the cylinder rod 15 of the cylinder 15.
This is a roller support stand connected to and supported by A, and a pressure roller 11 is rotatably supported at the end thereof. On the other hand, an annular rail 12 is fixed to the outer periphery of the rotating body 1, and is pressed so that the pressure roller 11 can contact and rotate on the rail 12.

Therefore, when the cylinder 15 is actuated, the cylinder rod 15A extends, and accordingly, the shaft 14A of the guide mechanism 14 disposed at both ends also extends while being guided so as to be parallel to the cylinder rod 15A. The pressure roller 11 is pressed against the rail 12.
Furthermore, the rotating body 1 is moved by this pressing force, and the guide roller 9 is pressed against the guide rail 7.

As a result, the annular rotating body 1 rotates with the gap between the guide roller 9 and the annular rail 5 being constrained at a certain specific position by the action of the pressure mechanism A section, that is, in a zero state.

With this device, the rotating body 1 rotates on a fixed orbit instead of being unstable as in the conventional case, and the meandering motion such as in the conventional hula hoop can be eliminated. As a result, the support roller 4 that supports the rotating body 1
The sideslip phenomenon can be avoided, abnormal wear can be prevented, and the service life can be significantly improved. Furthermore, this device also serves as a so-called stopper that prevents the rotating body 1 from running out of control due to external forces such as earthquakes.

In the above embodiment, the pressure device is provided at one location around the annular rotating body 1, but a plurality of pressure devices may be provided around the annular rotating body 1. For example, if three pressurizing devices as in the above embodiment are provided at equal intervals around the annular rotating body, the annular rotating body can be pressed not only from one side against the guide rail 7 as in the above embodiment, but also in the annular rotating body. Since the distance between the body 1 and the guide rail 7 can be adjusted, the relative position between the annular rotating body 1 and the guide rail 7 can be changed at regular intervals, thereby causing wear only to a certain part of the support roller 4. Wear points can be dispersed without causing damage.

[Brief explanation of the drawing]

Fig. 1 is a simplified partial plan view showing a conventional annular turning device, Fig. 2 is a plan view showing a conventional annular turning device, Fig. 3 is a cross-sectional view, and Figs. 4 and 5 are side views of a support roller. 6 is a plan view showing an embodiment of the present invention, FIG. 7 is a cross-sectional view, and FIG. 8 is an enlarged plan view of section A. 1: Annular rotating body, 4: Support roller, 5: Annular rail, 7: Guide rail, 9: Guide roller, 11: Pressure roller, 15: Cylinder.

Claims (1)

[Scope of utility model registration request] an annular rotating body supported by a plurality of support rollers and driven to rotate on a first annular rail laid horizontally; a plurality of guide rollers fixed to the inner circumferential portion of the annular rotating body are capable of rolling on the second annular rail; In an annular turning device in which a gap is provided between the guide roller and the second annular rail for smooth turning, the gap between the guide roller and the second annular rail is restricted at a specific position of the annular rotating body. An annular rotating device characterized by: