JPH0453768B2 - - Google Patents

Description

Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a conveyor, and particularly to a conveyor in which conveyor belts are stretched parallel to each other to form an upward movement path for conveyed objects. Support rollers are swingably provided so that the cross-sectional area of the transfer path can be changed in accordance with the amount of conveyed objects, and these support rollers are biased against the conveyor belt by a single biasing member. Concerning what has been done.

[Technical background of the invention and its problems] As a conveyor for conveying objects along a steeply sloped surface, a conveyor in which a set of belt conveyors are arranged side by side so that their conveying surfaces face each other is known. There is.

However, in the above-mentioned conventional conveyor, since the support roller that supports the back side of the conveyor belt is fixed on the conveyor surface, the upward transport path (trough) of the conveyed object divided by the conveyor belt is fixed. The size and cross-sectional area were constant. For this reason, it is not possible to transport a large number of objects, and there is also a drawback that large-diameter objects may get caught and become clogged.

[Object of the Invention] The present invention has been made in order to eliminate the drawbacks of the above-mentioned prior art, and its purpose is to be able to automatically change the cross-sectional area of the trough according to the amount of conveyed objects, To provide a conveyor that can improve cargo handling efficiency as much as possible, can reliably bias all supporting rollers with one biasing member, and is easy to manufacture and maintain.

[Summary of the Invention] In order to achieve the above-mentioned object, the present invention has a method in which conveyor belts are stretched in parallel with their conveyor surfaces pressed against each other to form an upward conveyance path for conveyed objects. Support rollers are connected and stretched around the conveyor belt at appropriate intervals along the conveyance direction and in a flexible manner in the width direction of the conveyor belt, and the support roller is attached to the connecting portion of these support rollers so as to be swingable with respect to the conveyance surface. The present invention is characterized in that support levers are provided, and a biasing member that simultaneously biases the support roller in the direction of pressing the support roller against the conveyance surface is spanned between the support levers.

[Embodiments of the Invention] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

In FIG. 1, reference numerals 1 and 2 are conveyor belts stretched in parallel with the conveyor surfaces 4 pressed against each other to form an upward conveyance path 3 for the conveyed object, and these conveyor belts 1 and 2 are at both ends in the conveyance direction. The drive roller 5 and the driven roller 6 are respectively disposed in the section. Reference numeral 7 denotes tension rollers that support the return sides of the conveyor belts 1 and 2, respectively. Both ends in the longitudinal direction of the ascending transfer path 3 are open, one end (lower end) thereof is formed as a carry-in port 8 for carrying in objects to be transported such as earth and sand, and the other end is formed as a carry-in port 9.

In addition, in order to support the conveying surfaces 4, 4 of the conveying belts 1, 2 that partition the ascending transfer path 3 while urging them in a direction in which they press against each other from their respective back sides, a support is provided on the back side of the conveying surfaces. The rollers 10 are arranged at appropriate intervals in the conveyance direction (in the illustrated example, in a lateral staggered manner). As shown in FIGS. 2 and 3, the support rollers 10 are connected to each other in the width direction of the conveyor belt so as to be flexible, and are specifically constructed as follows. That is, on each rear side of the transfer surface 4, a groove-shaped frame 11 whose transfer surface side is open is arranged and fixed along the ascending transfer path 3, and on the opposing inner walls 11a, 11b there are arranged and fixed frames 11 of two or more frames. One end of a roller shaft 12 of a support roller 10 is rotatably supported via a bracket 13. In this case, each support roller 10 is set to swing in a direction perpendicular to the conveying surface 4, using the bracket 13 as a fulcrum. The other end of the roller shaft 12 is connected to a joint member 1 that allows relative displacement due to rocking.
4, they are connected to each other in a flexible manner. This joint member 14 is formed by, for example, forming two sets of elongated holes 15 along the longitudinal direction in both side walls of a groove-shaped member.
Projected shafts 16 formed perpendicularly to the other end of the roller shaft 12 are engaged with these long holes 15, respectively. Therefore, when a force is applied from the conveying surface 4 side, the support roller 10 is bent at the joint member 14 to absorb the force. This joint member 14 is integrally formed with a support rod 17 whose free end side loosely passes through the frame 11, and the base end of the support rod 17 is connected to one widthwise end of the frame 11 via a bracket 18. A substantially central portion in the longitudinal direction of the support lever 19 is pivotally supported by a pin. That is, when the support lever 19 is swung in a direction perpendicular to the conveyance surface 4 with the bracket 18 as a fulcrum, the support roller 10 is swung in a direction perpendicular to the conveyance surface 4 with the bracket 13 as a fulcrum, and the upward transfer path It is designed to change the cross section of 3. A stopper 20 is formed on the support rod 17 to restrict its upward movement and to engage with the bottom surface of the frame 11 to hold the roller shaft 12 horizontally.

As shown in FIG. 2, the support rollers 10 having the above structure are arranged one above the other with the ascending transfer path 3 in between, and the free ends of the support levers 19 are directed toward the same side, and the upper and lower frames 11, 11 are connected via a connection frame 21. Pulleys 22 are rotatably attached to the free ends of the support levers 19, and each of the pulleys 22 has a biasing member that simultaneously biases all the support rollers 10 in the direction of pressing the conveyance surface 4. A hanging rope 23 is used, one end 23a of which is fixed to the frame 11 near the carry-out port 9, and a weight 24 suspended from the other end.This hanging rope 23 is carried across upper and lower pulleys 22 as shown in FIG. Loading entrance 8 from exit 9 side
It stretches in a zigzag pattern all the way to the sides.

Next, the operation of the present invention having the above configuration will be described.

Since tension is applied to the hanging rope 23 by the weight 24, this tension causes the upper and lower pulleys 22, 22, that is, the upper and lower support levers 19, 19
are urged toward each other. Therefore, the upper and lower support rollers 10, 10 work to press the conveying surfaces 4, 4 of the conveying belts 1, 2 against each other.

By the way, the conveyor belts 1 and 2 are rotationally driven so that their conveying surfaces move in the same direction at the same speed, and in this state, when an object to be conveyed such as earth and sand is brought in through the entrance 8, the object is upwardly transported. It will be transported on Route 3. In this case, the conveyor belt 1,
A reaction force that clamps the conveyed object m acts on the support roller 10 that supports the conveyance surface 4 of No. 2, and this reaction force is transmitted from the joint member 14 to the support rod 17 and the support lever 1.
9 to the hanging rope 23 and balances its tension. That is, hanging rope 2
3 is the tension of the transported object m passing through the ascending transport path 3.
The support roller 10 is allowed to rotate about the bracket 13 in accordance with the size of the support roller 10, and the ascending transfer path 3 is expanded. Then, the transported object is held by the tension of the hanging rope 23, so that
It is possible to reliably and smoothly transport the items according to the amount of transport without causing clogging or slips in the upward transport path 3.

[Modifications of the Invention] Instead of the weight 24, a spring, a cylinder, or the like may be used. In the embodiment, the hanging rope 23 was stretched continuously, but the hanging rope 23
It is also possible to divide it into multiple parts and pass it to each block. In addition, the hanging rope 23 is used as a biasing member.
The information is not limited to , and may be composed of links. Further, in the embodiment, a set of two supporting rollers 10 is used, but a set of three or more may be used, and these may be set according to the width of the conveyor belt. That will happen.

[Effects of the Invention] In summary, the present invention exhibits the following excellent effects.

(1) The support roller that supports the conveyance surface of the conveyor belt is configured to be flexible, so that the reaction force exerted on the support roller by the conveyed object and the biasing force of the biasing member are balanced, so that the conveyance surface of the conveyance belt is flexible. The cross-sectional area of the trough can be automatically changed according to the amount of conveyance.

(2) Therefore, the objects to be transported can be transported reliably and smoothly according to the amount of transport, and cargo handling efficiency can be improved as much as possible.

(3) Since the biasing member that presses the support rollers against the conveyance surface is spanned between the support levers that swing the support rollers relative to the conveyance surface, a single biasing member can reliably bias all the support rollers. The structure can be simplified, and manufacturing and maintenance are easy.

[Brief explanation of the drawing]

The drawings show a preferred embodiment of the present invention, and FIG. 1 is a schematic side view of the conveyor, FIG. 2 is an enlarged sectional view taken along line A-A in FIG. 1, and FIG. 3 is an enlarged sectional view of the same essential parts. It is. In the figure, 1 and 2 are conveyor belts, 3 is a rising transfer path,
4 is a conveyance surface, 10 is a support roller, 19 is a support lever, and 23 is a hanging rope serving as a biasing member.

Claims (1)

[Claims] 1. Conveyor belts stretched in parallel with their conveyor surfaces pressed against each other to form an upward transport path for the conveyed object, and conveyor belts provided at appropriate intervals along the conveyance direction on the conveyor surfaces of these conveyor belts, respectively. support rollers that are connected to each other in a manner that is flexible in the width direction of the conveyor belt and are stretched over the conveyor belt, and a support lever that is connected to the connecting portion of these support rollers and supports the support roller so as to be able to swing with respect to the conveyance surface. and a biasing member that is spanned between these support levers and simultaneously biases the support roller in a direction to press the support roller against the conveyance surface.