JPH05229617A - Vertical conveyor device - Google Patents

Abstract

PURPOSE:To alleviate a worker's fatigue in carrying out a maintenance work, and reduce the device and installation cost by arranging an elevator car gondola outside a frame. CONSTITUTION:A main belt 3 driven with a motor 3a and a follower belt 4 driven in contact with the main belt 3, are provided within a vertically grounded frame 1, thereby constituting a vertical carrying section 6 for the vertical transfer of an article. Also, a car gondola 2 elevated with a hoisting device 20 is laid outside the frame 1. According to this construction, a worker is not required to go up and down a staircase in carrying out a maintenance work with a conveyor, and a maintenance tool can be carried with the gondola 2. Thus, a worker's fatigue can be alleviated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical conveyor device for holding and vertically conveying an object to be conveyed, and more particularly to a vertical conveyor device with improved maintenance workability.

[0002]

2. Description of the Related Art When a so-called bulk material such as coal, limestone, grain, earth and sand, a dehydrated cake or the like or a material having a relatively large volume such as a solid material is vertically conveyed, two belts are superposed on each other. A so-called superposition conveyor device is used in which a conveyed object is sandwiched between belts and conveyed vertically. In the above-mentioned stacking conveyor device, a stacking portion and a return portion of a belt for sandwiching an object to be transported are arranged inside a frame having a rectangular horizontal cross section. Inside the frame,
A plurality of edge rollers for pressing the lateral ends of the overlapped belts and a plurality of backup rollers for pressing the back surface of the belt are arranged in the overlapping portion of the belt, and a plurality of return rollers are arranged in the return portion. Maintenance work such as daily inspection, adjustment, and repair is performed on each roller. For this reason, a corridor for maintenance work is provided at a predetermined height on the frame of the superposition conveyor device, and these corridors are connected by stairs. The polymerization conveyer device has high transport efficiency and can have a high lift. For this reason,
Recently, a polymerization conveyor device with a lift of 30 to 50 m is installed.

[0003]

All the maintenance work for the above-mentioned polymerization conveyor is performed by a worker.
For this reason, in the high-height stacking conveyor, there is a problem in that an operator carrying a maintenance tool moves up and down the frame to increase fatigue and also to increase the time required for the maintenance work.

The corridors for maintenance work are provided at predetermined heights. Therefore, as the height of the superposition conveyor increases, the number of corridors also increases, and the number of members and the weight of steel used in the corridors and stairs become extremely large. Further, since the corridor and the stairs are all connected to the frame, it is necessary to increase the strength of the frame and the number of required members is increased. Therefore, there is a problem in that the device cost and the installation cost increase.

It is an object of the present invention to provide a vertical conveyor device which can reduce the fatigue of workers and the cost of the device.

[0006]

In order to solve the above-mentioned problems, a vertical conveyor device according to the present invention is a vertical conveyor in which a plurality of belts for sandwiching and carrying an object to be conveyed are arranged inside a vertically installed frame. The conveyor device is configured to have a gondola provided outside the frame so as to be able to move up and down along the frame, and an elevating means for elevating the gondola. In the vertical conveyor device, the gondola has a floor facing a plurality of side surfaces of the frame,
It is preferable to provide a plurality of guide rollers that rotate in contact with the frame.

[0007]

[Operation] The vertical conveyor device (hereinafter simply referred to as "conveyor")
According to the above), it is possible to reduce the fatigue of the worker who is engaged in the maintenance work and reduce the device cost of the conveyor. That is, since a conveyor is configured by providing a gondola that can be moved up and down along the frame outside a frame that is vertically installed and has a belt that conveys an object to be conveyed inside, and that is provided with an elevating means that elevates the gondola. When carrying out maintenance work on the conveyor, the worker can ride on the gondola and move up and down along the frame. Therefore, there is no need to go up and down stairs,
In addition, since the maintenance tool can be placed on the gondola, it is possible to reduce operator fatigue. There is no need for a worker to ride on the gondola and ascend / descend along the frame to provide stairs in the frame, and it is not necessary to provide a corridor by providing the gondola with floors facing a plurality of side surfaces of the frame. Therefore, the number of constituent members of the frame can be reduced, and the weight can be reduced. Therefore, the device cost of the conveyor can be reduced and the installation cost can be reduced.

[0008]

Embodiment An embodiment of the above conveyor will be described below with reference to the drawings. 1 is a side view when the conveyor according to the present embodiment is applied to a coal silo, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a horizontal sectional view for explaining the internal structure of a frame, and FIG. 4 is a frame and a gondola. 5 is a plan view of FIG. 4. FIG. The conveyor A shown in the figure is provided with a gondola 2 which can be lifted up and down outside a frame 1 which constitutes a vertical conveying portion of the conveyor A, thereby eliminating the walkway and stairs for maintenance work provided in the conventional vertical conveyor device. As a result, the fatigue of the worker who performs the maintenance work is reduced and the device cost is reduced.

First, a schematic structure of a conveyor system on the conveyor A will be described. As shown in FIGS. 1 and 2, the conveyor A is a main belt 3 driven by a motor 3a.
And a subordinate belt 4 that comes into contact with the main belt 3 and is driven thereby. The main belt 3 is stretched from a lower horizontal transport unit 5 provided below through a vertical transport unit 6 to an upper horizontal transport unit 7 provided above, and the subordinate belt 4 is stretched over the entire area of the vertical transport unit 6. The main belt 3 is passed to the conveyor 6
Is polymerized with. The horizontal conveyors 5 and 7 provided on the lower and upper parts of the conveyor A have the same structure as a normal conveyor device for conveying loose objects, and the vertical conveyor 6 includes a main belt 3 and a subordinate belt 4. The belts 3 and 4 are superposed on each other to sandwich the transported object between these belts 3 and 4, and the belts 3 and 4 are transported along the vertically installed frame 1 so that they can be transported vertically. Predetermined tension is applied to the main belt 3 and the subordinate belt 4 by the take-up mechanisms 3b and 4a, respectively.

The vertical transport section 6 has a sectional structure as shown in FIG. That is, the overlapping portion of the main belt 3 and the subordinate belt 4 is arranged in the substantially center of the frame 1,
An edge roller 8 that presses the widthwise end portions of the superposed belts 3 and 4 and a backup roller 9 that presses the back surface of the superposed belts 3 and 4 biased by a spring 9a are arranged. The edge rollers 8 and the backup rollers 9 are arranged alternately in the height direction, that is, in a zigzag pattern. However, the configuration is not limited to this, and the edge rollers 8 and the backup rollers 9 may be arranged to face each other with the overlapped belts 3 and 4 as the center. The return side of the main belt 3 is disposed inside the frame 1 while being guided by the return roller 10, and the return side of the subordinate belt 4 is also disposed so as to be guided by the return roller 11 having a predetermined trough angle. There is. The brackets 12 to 15 that support the rollers 8 to 11 are directly or indirectly attached to the columns 1a of the frame 1. Therefore, the frame 1 is configured to have strength and rigidity capable of supporting the forces acting on the rollers 8 to 11.

In the conveyor A constructed as described above,
The transported object is supplied onto the main belt 3 from a hopper 16 arranged to face the lower horizontal transportation section 5. The main belt 3 to which the material to be transported is supplied is transported in the direction of the vertical transport unit 6, and when reaching the lower end of the transport unit 6, the main belt 3 is superposed with the secondary belt 4.
Then, the superposed main belt 3 and subordinate belt 4 are vertically transported inside the frame 1 and reach the upper end of the vertical transport unit 6. Here, the subordinate belt 4 is separated from the main belt 3 and transferred to the return side, the main belt 3 is transferred in the upper horizontal transfer section 7 in the silos 17 and 18 direction, and the objects to be transferred are put into the predetermined silos 17 and 18. To do. Further, the maintenance work for the vertical conveyance section 6 of the conveyor A is performed by the both side surfaces 1 in the width direction of the belts 3, 4.
It is performed from b and 1c.

Next, the structures of the frame 1 and the gondola 2 will be described with reference to FIGS. It should be noted that, in the same figure, for the sake of simplicity, the main belt 3 and the subordinate belt 4 and the like constituting the conveyor A are omitted and only the frame 1 and the gondola 2 are shown. In the figure, the frame 1 includes rollers 8 to 11
The vertical transfer section 6 of the conveyor A is configured by mounting the brackets 12 to 15 for supporting the above-mentioned brackets at predetermined positions. The frame 1 has a rectangular cross section, and is configured by arranging four columns 1a at each corner. Further, the frame 1 has a height corresponding to the lift of the conveyor A and is configured to have a rigidity capable of supporting the force acting on each of the rollers 8 to 11. Therefore, the columns 1a of the frame 1 are each made of H-shaped steel having a predetermined dimension.

The gondola 2 is for raising and lowering along the frame 1 with a maintenance worker on it. Then, the boarded worker can perform a predetermined maintenance work on the vertical transport unit 6 in the process of raising and lowering the gondola 2. The gondola 2 is connected via a wire 19 to a hoisting device 20 which serves as an ascending / descending means, and by operating the hoisting device 20, the gondola 2 can be hoisted and lowered along the frame 1. As described above, the maintenance work for the vertical transport unit 6 is performed from both side surfaces 1b and 1c of the frame 1. For this reason,
Two gondolas may be provided corresponding to the side faces 1b and 1c, and these gondolas may be individually moved up and down. However, in this embodiment, one worker boards the gondola 2 and the side 1
The maintenance work for b and 1c can be performed. That is, the gondola 2 is provided with a U-shaped floor surface 2a as shown in FIG. 5, and the floor surface 2a is configured to face the side surfaces 1b and 1c of the frame 1.

At a predetermined position of the gondola 2, a plurality of guide roller units 21 contacting the columns 1a of the frame 1 and rotating.
Are arranged. The guide roller unit 21 includes two rollers 21 that rotate by contacting two orthogonal surfaces of the column 1a.
a, 21b, and these rollers 21a, 21b are pillars 1a.
Is arranged so as to be able to contact the flange surface of the H-section steel and the end surface of the flange. Guide roller unit
Numerals 21 are arranged on the lower surface of the floor surface 2a of the gondola 2 and at positions facing the columns 1a constituting the frame 1, respectively. Therefore, the gondola 2 can move up and down using the pillar 1a of the frame 1 as a guide.

An end of a wire 19 is attached to the gondola 2. The number of wires 19 is set in consideration of the weight of the gondola 2, the stability when the gondola 2 is moved up and down, and is a design issue. In this embodiment, four wires 19 are used, and the wires 19 are attached to the corners of the gondola 2 and in the vicinity of the corners.

In order to guide the wire 19 attached to the gondola 2 toward the hoisting device 20, a guide portion 22 is formed at the upper end of the frame 1. The guide portion 22 is configured by fixing a member 22a such as H-shaped steel to the upper end of the frame 1 and disposing a plurality of wire sheaves 23 on the member 22a. The mounting position and mounting direction of the wire sheave 23 are set in correspondence with the fixing position of the wire 19 and the mounting position of the hoisting device 20 with respect to the gondola 2.

The hoisting device 20 is installed near the frame 1. A normal winch can be used as the hoisting device 20. In the present embodiment, a double-hanging compound drum type drum is used, and it is possible to wind up four wires 19 at the same time. Further, a wire guide 20b for preventing a stepwise winding of the wire 19 is provided for each winding drum 20a, and a wire sheave 20c for changing the direction of the wire 19 is provided. Moreover, a motor with a brake is used as a motor constituting the hoisting device 20. The hoisting device 20 is operated by an operation panel provided near the hoisting device 20 and a remote operation panel provided on the gondola 2.

When the hoisting device 20 is operated to move the gondola 2 up and down to a predetermined work position, it is preferable to reliably maintain the position of the gondola 2 while performing maintenance work at this work position. Therefore, in this embodiment, a clamp mechanism 24 for clamping the gondola 2 on the frame 1 is provided. This clamp device 24 is a pillar 1 of the frame 1
It comprises a bracket 24a fixed to a, a bracket 24b fixed to the gondola 2, and a pin 24c for inserting these brackets 24a and 24b. Therefore, the gondola 2 reaches a predetermined height and the brackets 24a, 24b
When they face each other, a worker boarding the gondola 2 inserts the pin 24c into these brackets 24a and 24b,
The gondola 2 is mechanically connected to the frame 1 and is a hoisting device.
Gondola 2 will not drop even if something goes wrong with 20.

In the conveyor A constructed as described above, a case will be described in which the rollers 8 to 11 arranged in the vertical conveying section 6 are refueled or adjusted, or maintenance such as patrol is performed. First, the hoisting device 20 is driven to lower the gondola 2 to the lower limit, and the worker carrying the maintenance tool is boarded. An operator on the gondola 2 operates the remote control panel to raise the gondola 2 and stop it at a desired height.
The maintenance work is performed on the above, and then the gondola 2 is further raised to perform the maintenance work sequentially.
After the maintenance work up to the upper end of the vertical transport unit 6 is completed, the gondola 2 is lowered and the worker descends, and then the gondola 2 is held at the lowered position.

In the above-mentioned embodiment, in order to stop the gondola 2 at a predetermined height, it is preferable to provide a limit switch at a predetermined position of the gondola 2 and a dog for contacting the limit switch on the frame 1. ..

[0021]

As described in detail above, in the vertical conveyor device according to the present invention, the belt for conveying the object to be conveyed is arranged inside the vertically installed frame, and the gondola is arranged outside the frame. At the same time, the gondola is moved up and down by the lifting means. Therefore, the worker can use the gondola when performing the maintenance work. Therefore, even if the lifting height of the vertical conveyor device becomes high, the worker can perform the maintenance work without going up and down the stairs, and the fatigue can be reduced. Further, it is not necessary to provide a corridor for maintenance work on the frame, and therefore, it is not necessary to provide stairs. Therefore, it is possible to reduce the number of constituent members of the frame and reduce the weight. Therefore, it has a feature that the device cost and the installation cost can be reduced.

[Brief description of drawings]

FIG. 1 is a side view when the conveyor according to the present embodiment is applied to a coal silo.

FIG. 2 is a plan view of FIG.

FIG. 3 is a horizontal sectional view illustrating an internal configuration of a frame.

FIG. 4 is a side view illustrating a relationship between a frame and a gondola.

FIG. 5 is a plan view of FIG.

[Explanation of symbols]

A is a conveyor, 1 is a frame, 1a is a pillar, 1b and 1c are side surfaces, 2 is a gondola, 2a is a floor surface, 3 is a main belt, 3a.
Is a motor, 3a and 4a are take-up mechanisms, 4 is a follower belt, 5 is a lower horizontal transport unit, 6 is a vertical transport unit, 7 is an upper horizontal transport unit, 8 is an edge roller, 9 is a backup roller, and 9a is a spring. , 10 and 11 are return rollers, 12 to 15 are brackets, 16 is a hopper, 17 and 18 are silos, 19 is a wire, 20 is a hoisting device, 20a is a winding drum, 20b is a wire guide,
21 is a guide roller unit, 21a and 21b are rollers, 22 is a guide portion, 23 is a wire sheave, 24 is a clamp device, 24
a and 24b are brackets, and 24c is a pin.

Claims (2)

[Claims] 1. A vertical conveyer device in which a plurality of belts for holding and conveying an object to be conveyed are provided inside a vertically installed frame, and the vertical conveyor device is provided outside the frame so as to be movable up and down along the frame. A vertical conveyor device, comprising: the gondola and an elevating means for elevating the gondola. 2. The vertical conveyor apparatus according to claim 1, wherein the gondola has a floor facing a plurality of side surfaces of a frame, and a plurality of guide rollers rotating in contact with the frame.