JP2016199343A - Support structure of belt conveyer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support structure of a belt conveyer, which enables an operation to be smoothly continued by enabling absorption of rotational movement of a support frame, associated with earthquakes.SOLUTION: An end of a support frame 4 is provided with a biaxial rotation absorption mechanism 20 which absorbs relative rotational movement centering on a vertical axis O between a supporting leg 2 and the support frame 4 on the occurrence of earthquakes and which absorbs relative rotational movement centering on a horizontal axis H extended in a width direction of a conveyer belt between the supporting leg 2 and the support frame 4.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a support structure for a belt conveyor.

  In general, as shown in FIG. 6, a belt conveyor 1 that conveys coal or the like spans a support frame 4 that extends in a moving direction of the conveyor belt 3 between support legs 2 that are erected at a necessary interval. It has the structure formed by arrange | positioning.

  Conventionally, in the case of the belt conveyor 1 as shown in FIG. 6, one end of the support frame 4 is slidably supported on the support leg 2 by a slide bearing 5 in the moving direction of the transport belt 3, and the support A structure in which the other end of the frame 4 is rigidly connected to the support leg 2 by a bolt 6 is employed.

  Since such a structure is adopted, the thermal expansion / contraction difference in the longitudinal direction of the support frame 4 due to the temperature difference between summer and winter, and the displacement in the longitudinal direction of the support frame 4 due to the shaking at the time of earthquake occurrence The difference is absorbed by the slide bearing 5.

  Incidentally, in addition to the belt conveyor 1 having the structure as shown in FIG. 6, for example, the support frame 4 is used as a structure (not shown) such as a building only at the start and end of the belt conveyor 1 not shown. On the other hand, there is also a belt conveyor 1 which is slidably supported by the slide bearing 5 in the moving direction of the conveying belt 3. In such a belt conveyor 1, the end of the support frame 4 is rigidly connected to the support leg 2 located at the intermediate part between the start end and the end by the bolt 6, and the other support leg 2 is supported by the support frame 2. A structure is adopted in which the ends of 4 are coupled by inserting bolts 6 into elongated holes extending in the moving direction of the conveyor belt 3. In this case, the difference in thermal expansion / contraction in the longitudinal direction of the support frame 4 due to the temperature difference between summer and winter, and the displacement difference in the longitudinal direction of the support frame 4 due to the shaking at the time of earthquake occurrence are The shape is absorbed by slide bearings 5 arranged at the start and end, not shown.

  Patent Document 1 is an example of a general technical level of a belt conveyor support structure.

JP 2009-286622 A

  By the way, when the support frame 4 vibrates so as to bend in the width direction perpendicular to the longitudinal direction when an earthquake occurs, a relative rotational motion about the vertical axis occurs between the support leg 2 and the support frame 4.

  However, since the conventional support structure cannot cope with the relative rotational movement about the vertical axis between the support leg 2 and the support frame 4 when an earthquake occurs, a large load is applied to the belt conveyor 1. It was inevitable to hang.

  Incidentally, instead of rigidly connecting the other end of the support frame 4 to the support leg 2 with bolts, a structure that allows rotation by pin connection is also proposed. However, in the belt conveyor 1 in which an inclination angle exists, Because of its own weight, the load on the pin is concentrated and increased, and it is necessary to increase the rigidity of the pin, making practical use difficult.

  The present invention has been made in view of the above-described conventional problems, and is intended to provide a support structure for a belt conveyor that can absorb the rotational motion accompanying the earthquake of the support frame and can continue the operation smoothly. .

The present invention provides a belt conveyor support structure in which a support frame extending in the moving direction of the conveyor belt is spanned between support legs disposed at a required interval.
The end of the support frame absorbs the relative rotational movement around the vertical axis between the support leg and the support frame at the time of the occurrence of the earthquake, and the transfer between the support leg and the support frame. The present invention relates to a support structure for a belt conveyor comprising a biaxial rotation absorbing mechanism that absorbs relative rotational motion about a horizontal axis extending in the width direction of the belt.

In the support structure of the belt conveyor, the biaxial rotation absorption mechanism is
A turning mechanism in which a turning block is rotatably attached to a vertical pin extending in the vertical direction;
A tilting mechanism in which a pair of hinge blocks are rotatably attached to a horizontal pin extending in the horizontal direction;
At least one of the vertical pin and the turning block of the turning mechanism is attached to either the upper surface of the support leg or the lower surface of the end portion of the support frame,
One hinge block of the tilt mechanism is attached to either the upper surface of the support leg or the lower surface of the end portion of the support frame, and the tilt mechanism is mounted to either the vertical pin of the swing mechanism or the swing block. It is preferable to attach the other hinge block.

  It is preferable that a turning assist slide mechanism for slidably supporting the support frame on the upper surface of the support leg is disposed on the outer periphery of the turning mechanism.

  It is preferable that a stopper for preventing the support frame from being lifted is provided on the upper surface of the support leg.

  It is preferable that a buffer body is provided on the upper surface of the support leg to limit the movement of the turning assist slide mechanism when an earthquake occurs and to reduce the impact at the time of the collision of the turn assist slide mechanism.

  According to the support structure of the belt conveyor of the present invention, it is possible to absorb the rotational motion accompanying the earthquake of the support frame, and to achieve an excellent effect that the operation can be continued smoothly.

It is a side view which shows the Example of the support structure of the belt conveyor of this invention. It is a front view which shows the Example of the support structure of the belt conveyor of this invention. It is a side view which shows the biaxial rotation absorption mechanism in the Example of the support structure of the belt conveyor of this invention, Comprising: It is the III-III arrow equivalent view of FIG. It is a top view which shows the Example of the support structure of the belt conveyor of this invention, Comprising: It is the IV-IV arrow equivalent view of FIG. In the Example of the support structure of the belt conveyor of this invention, it is a top view which shows the relative rotational motion centering on the up-down direction axis | shaft between a support leg and a support frame at the time of an earthquake occurrence, (a) is support The figure which shows the state which the leg rotated in the clockwise direction relatively with respect to the support frame, (b) is the figure which shows the state in which the support leg rotated in the counterclockwise direction relatively with respect to the support frame. It is a side view which shows an example of the support structure of the conventional belt conveyor.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 to 5 show an embodiment of a support structure for a belt conveyor according to the present invention. In the figure, the same reference numerals as those in FIG. 6 denote the same parts, and one end of the support frame 4 is a conventional one. Similarly to the above, the support leg 2 is slidably supported by the slide bearing 5 in the moving direction of the transport belt 3.

  In the case of the present embodiment, the other end of the support frame 4 absorbs the relative rotational motion about the vertical axis O between the support leg 2 and the support frame 4 at the time of occurrence of the earthquake, and The present invention is characterized in that a biaxial rotation absorbing mechanism 20 that absorbs relative rotational motion about a horizontal axis H extending in the width direction of the transport belt between the support leg 2 and the support frame 4 is provided. .

  The biaxial rotation absorbing mechanism 20 includes a turning mechanism 21 and a tilting mechanism 22.

  The turning mechanism 21 is configured by rotatably attaching a turning block 21b to a vertical pin 21a extending in the vertical direction. In the example shown in FIGS. 2 and 3, the vertical pin 21 a of the turning mechanism 21 is attached to the upper surface of the top plate 2 a of the support leg 2.

  The tilt mechanism 22 is configured by rotatably attaching a pair of hinge blocks 22b to a horizontal pin 22a extending in the horizontal direction. In the example shown in FIGS. 2 and 3, one hinge block 22 b is attached to the lower surface of the other end portion of the support frame 4, and the other hinge block 22 b is attached to the upper surface of the turning block 21 b of the turning mechanism 21. .

  Incidentally, with the turning mechanism 21 turned upside down, the turning block 21b is attached to the upper surface of the top plate 2a of the support leg 2, and the vertical pin 21a is attached to the lower surface of the other hinge block 22b of the tilting mechanism 22. Is possible. Further, one hinge block 22b of the tilting mechanism 22 is attached to the upper surface of the top plate 2a of the support leg 2, and the vertical pin 21a of the turning mechanism 21 is attached to the lower surface of the other end of the support frame 4, so that the tilting is performed. It is also possible to attach the turning block 21b of the turning mechanism 21 to the upper surface of the other hinge block 22b of the mechanism 22. Furthermore, one hinge block 22b of the tilting mechanism 22 is attached to the upper surface of the top plate 2a of the support leg 2, and the turning block 21b of the turning mechanism 21 is attached to the lower surface of the other end of the support frame 4. It is also possible to attach the vertical pin 21 a of the turning mechanism 21 to the upper surface of the other hinge block 22 b of the tilting mechanism 22.

  As shown in FIGS. 2 and 4, a turning auxiliary slide mechanism 23 that slidably supports the support frame 4 on the top surface of the top plate 2 a of the support leg 2 is disposed on the outer periphery of the turning mechanism 21. The turning auxiliary slide mechanism 23 is mounted on the upper surface of the top plate 2a of the support leg 2 so that two plate-like slide bases 23a are arranged symmetrically about the vertical axis O of the turning mechanism 21, and A slide plate 23c is attached to the lower surface of two pedestal portions 23b extending downward from the lower surface of the other end of the support frame 4 so as to be slidable on the slide base 23a. An arcuate curved portion 23d centering on the vertical axis O is formed on the outer peripheral surface of the slide plate 23c.

  On the top surface of the top plate 2a of the support leg 2, a stopper 24 for preventing the support frame 4 from being lifted is provided. The stopper 24 is a bowl-shaped member as shown in FIG. 2, and restricts the upward movement of the curved portion 23d of the slide plate 23c.

  On the top surface of the top plate 2 a of the support leg 2, a buffer body 25 is provided that restricts the movement of the turning assist slide mechanism 23 in the event of an earthquake and reduces the impact at the time of the impact of the turn assist slide mechanism 23. It is.

  Next, the operation of the above embodiment will be described.

  In normal times when no earthquake occurs, the biaxial rotation absorbing mechanism 20 does not operate as shown in FIGS. 2, 3, and 4, and the support frame 4 is held on the support leg 2. Yes.

  On the other hand, when an earthquake occurs, as shown in FIG. 5 (a), the support leg 2 rotates relative to the support frame 4 (see FIG. 2) clockwise about the vertical axis O, As shown in FIG. 5 (b), the biaxial rotation absorbing mechanism is such that the support leg 2 rotates in the counterclockwise direction around the vertical axis O relative to the support frame 4 (see FIG. 2). This is made possible by 20 turning mechanisms 21. At this time, the swivel block 21b rotates relative to the vertical pin 21a extending in the vertical direction of the swivel mechanism 21, and it is possible to avoid a large load on the belt conveyor 1 due to the rolling of the earthquake.

  At the same time, the pair of hinge blocks 22b rotate relative to the horizontal pin 22a extending in the horizontal direction of the tilting mechanism 22 of the biaxial rotation absorbing mechanism 20, thereby supporting not only the earthquake roll but also the vertical shake. It is possible to efficiently absorb the energy of the earthquake and reduce the load on the belt conveyor 1.

  Further, as shown in FIGS. 2 and 4, a turning assist slide mechanism 23 is disposed on the outer peripheral portion of the turning mechanism 21, so that the support leg 2 moves up and down relative to the support frame 4 when an earthquake occurs. When rotating about the directional axis O, the slide plate 23c slides on the slide base 23a symmetrically disposed about the vertical axis O on the upper surface of the top plate 2a of the support leg 2. As a result, it is possible to support the support frame 4 on the upper surface of the top plate 2a of the support leg 2 while sliding the support frame 4 in a stable state. As a result, when compared with the conventional structure in which the other end portion of the support frame 4 is pin-coupled to the support leg 2 to allow rotation, even if the belt conveyor 1 has an inclination angle, the biaxial It is possible to avoid that the load is concentrated on one point with respect to the rotation absorbing mechanism 20 and to put it into practical use. In addition, since an arcuate curved portion 23d centered on the vertical axis O is formed on the outer peripheral surface of the slide plate 23c, the curved portion 23d comes into contact with the stopper 24 to prevent turning. Don't worry.

  Furthermore, since the upper surface of the top plate 2a of the support leg 2 is provided with a hook-shaped stopper 24 as shown in FIG. 2, the upward movement of the curved portion 23d of the slide plate 23c is prevented. By being restricted, the support frame 4 is prevented from being lifted from the support leg 2.

  In addition, since the shock absorber 25 is disposed on the top surface 2a of the support leg 2, the movement of the turning assist slide mechanism 23 is restricted by the shock absorber 25 when an earthquake occurs, and the turning It is possible to reduce the impact at the time of collision of the auxiliary slide mechanism 23.

  On the other hand, a difference in thermal expansion / contraction in the longitudinal direction of the support frame 4 due to a temperature difference between summer and winter and a displacement difference in the longitudinal direction of the support frame 4 due to a shake at the time of an earthquake are absorbed by the slide bearing 5. Is done. However, the support frame 4 is slidably supported in a moving direction of the conveyor belt 3 by a slide bearing 5 with respect to a structure (not shown) such as a building at the start and end of the belt conveyor 1 (not shown). In the belt conveyor 1, one end portion of the support frame 4 is not necessarily supported by the slide bearing 5 so as to be slidable in the moving direction of the conveyor belt 3. You may employ | adopt the structure which couple | bonds by the insertion of the volt | bolt 6 to the long hole extended in a moving direction.

  Thus, the rotational motion accompanying the earthquake of the support frame 4 can be absorbed, and the operation can be continued smoothly.

  In addition, the support structure of the belt conveyor of this invention is not limited only to the above-mentioned Example, Of course, various changes can be added within the range which does not deviate from the summary of this invention.

DESCRIPTION OF SYMBOLS 1 Belt conveyor 2 Support leg 2a Top plate 3 Conveyor belt 4 Support frame 20 Biaxial rotation absorption mechanism 21 Turning mechanism 21a Vertical pin 21b Turning block 22 Tilt mechanism 22a Horizontal pin 22b Hinge block 23 Turning auxiliary slide mechanism 24 Stopper 25 Buffer O Vertical axis H Horizontal axis

Claims (5)

In the support structure of the belt conveyor which is arranged so as to span the support frame extending in the moving direction of the transport belt between the support legs arranged at a required interval,
The end of the support frame absorbs the relative rotational movement around the vertical axis between the support leg and the support frame at the time of the occurrence of the earthquake, and the transfer between the support leg and the support frame. A support structure for a belt conveyor, comprising a biaxial rotation absorbing mechanism for absorbing relative rotational movement about a horizontal axis extending in the width direction of the belt. The biaxial rotation absorption mechanism is
A turning mechanism in which a turning block is rotatably attached to a vertical pin extending in the vertical direction;
A tilting mechanism in which a pair of hinge blocks are rotatably attached to a horizontal pin extending in the horizontal direction;
At least one of the vertical pin and the turning block of the turning mechanism is attached to either the upper surface of the support leg or the lower surface of the end portion of the support frame,
One hinge block of the tilt mechanism is attached to either the upper surface of the support leg or the lower surface of the end portion of the support frame, and the tilt mechanism is mounted to either the vertical pin of the swing mechanism or the swing block. 2. The belt conveyor support structure according to claim 1, wherein the other hinge block is attached.   The support structure for a belt conveyor according to claim 2, wherein a turning auxiliary slide mechanism for slidably supporting the support frame on the upper surface of the support leg is disposed on an outer peripheral portion of the turning mechanism.   The support structure for a belt conveyor according to claim 2 or 3, wherein a stopper for preventing the support frame from being lifted is provided on an upper surface of the support leg.   The belt conveyor according to claim 3 or 4, wherein a buffer body is provided on the upper surface of the support leg to limit a movement of the turning auxiliary slide mechanism when an earthquake occurs and to reduce an impact at the time of the collision of the turning auxiliary slide mechanism. Support structure.

Images