JPH03293209A - Detecting device for rolling and twisting and the like in pipe conveyer - Google Patents

Abstract

PURPOSE:To improve detection efficiency by making pressure contact with a detecting element movable in a tangential direction on the outer peripheral surface of a rounded carrying belt to detect movement in the tangential direction. CONSTITUTION:The occurrence of a twisting phenomenon, etc., to a rounded outward belt 1A causes a following roller 17, in constant pressure contact with the belt 1A, to follow the twisting of the belt 1A and twist belt and right due to the energization of a spring 15. Consequently an arm 13, rotary frame 11, and first driving plate 18 are together oscillated from side to side around a pin 12. This causes a driving piece 18B to close a limit switch 19 either on the left or on the right and communicate the occurrence of twisting. This constitution permits efficient detection.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is characterized in that an endless belt-shaped conveyor belt is wound between a pair of rollers, and is rolled up into a pipe shape and rotated between the two rollers. This invention relates to a device that is installed on a pipe conveyor and detects twisting, meandering, etc. of a pipe-shaped conveyor belt.

(2) (Prior art) Figures 6 and 7 show a general pipe conveyor, in which the belt-shaped portion of the conveyor belt (1) consists of an upper driving roller (2) and a lower driven roller. It runs around on rollers (3).

The conveyor belt (1) runs in a belt shape along the driven roller (3) from below, and is then rolled into a pipe shape by a rounding roller (not shown).
The outgoing belt (lA), which wraps around the transported object (5) that has been dropped and is then rolled up, is guided to a plurality of shape-retaining rollers (8) surrounding the circular hole (7) at the top of the shape-retaining frame (6). The conveyed object (5) is released into a belt-like belt just before the drive roller (2), and the conveyed object (5) is thrown into the receiving hopper (9).

The belt-shaped belt that ran around the drive roller (2) was
It is rolled up into a pipe shape again and becomes an inbound belt (IB).
Shape retaining rollers (
8), returns to the driven roller (3) and circulates.

In the above-mentioned pipe conveyor, there are places where the conveyor belt (1) bends, where there is a long interval between the adjacent shape-retaining frames (6), or when the pipe conveyor is exposed to strong winds, and even when the conveyed object Due to the shape and material of the conveyor belt (1), the conveyor belt (1) may undergo a twisting phenomenon, that is, twist or meander, causing stress to concentrate locally on the conveyor belt (11), causing damage to the conveyor belt (11). The shape of the pipe may collapse and the transported object (5) may leak out on the way.

(Problem to be Solved by the Invention) It is necessary to detect the occurrence of the above phenomenon at an early stage, correct it, or take other appropriate measures to prevent damage.

SUMMARY OF THE INVENTION An object of the present invention is to provide a device for detecting twisting, etc. in a pipe conveyor, which can efficiently detect such phenomena by adopting a simple configuration.

(Means for solving problems) In order to achieve the above object, the present invention adopts the following configuration.

That is, the first is a pipe conveyor in which an endless belt-shaped conveyor belt is wound between a pair of rollers, and is rolled up into a pipe shape between both rollers. A pipe conveyor comprising: a sensing element that is pressed into contact with the outer periphery and is movable in a substantially tangential direction; and a sensing means that detects movement of the sensing element in the tangential direction as the conveyor belt moves laterally. The second one is a pipe conveyor that is in pressure contact with the outer circumferential surface of a rolled conveyor belt and is movable in a substantially tangential direction of the outer circumference and in a centripetal direction of the rolled conveyor belt. Twisting, etc. in a pipe conveyor characterized by comprising a detection element, a detection means for detecting movement of the detection element in a tangential direction as a conveyor belt moves, and a detection means for detecting movement in a centripetal direction. It is particularly preferable that these detection elements are follower rollers that are rotatable around an axis that is substantially tangential to the outer circumference of the conveyor belt, and that are in close contact with the outer circumferential surface of the conveyor belt. It is characterized by rolling and moving.

(5) In the first invention, as the conveyor belt advances, the sensing element behaves in close contact with its outer peripheral surface.

Preferably, the detection element is a follow-up roller that rolls in close contact with the outer peripheral surface of the conveyor belt. When a twisting phenomenon or axial meandering occurs in the rolled conveyor belt, the following roller, which serves as a detection element, follows and is deflected in the same direction as the torsion or meandering direction of the conveyor belt. By detecting the movement of the follower roller in the axial direction by the detection means, it is possible to know that a twisting phenomenon or the like has occurred in the conveyor belt.

If necessary, it is preferable that the activation of this detection means activates an alarm device or a correction device.

In the second invention, in addition to the above, the following roller is also moved in the centripetal direction of the rolled conveyor belt, and the movement of the following roller in that direction is detected by a detection means, so that the shaft is moved. It is also possible to detect meandering of the conveyor belt in a direction perpendicular to the direction (6).

(Embodiment) FIGS. 1 to 4 show embodiments of both the first invention and the second invention in which a follow-up roller is used as the sensing element.

Shape retaining frame (6) (Fig. 1~
The outgoing belt (IA
) A horizontal substrate (10) (support body) is fixed to the lower part of the base plate (10).

On the entire upper surface of the board (10) (left side in Figure 1), a first pin (12) is located at the center of the bottom piece (IIA) of the rotating frame (11), which has an isosceles triangular shape and is open at the upper end. It is rotatably supported with.

At the upper end opening of the rotating frame (January), the front part of an arm (13) facing in the front-rear direction is pivotally supported with a second bin (14) facing in the left-right direction, and the front end of the arm (13) and the board (10) A tension spring 5) is installed on the same earthen floor.

A pivot plate (16) whose front face is shaped like a letter 0 is mounted on the upper surface of the rear end of the arm (13), and an outbound belt (16), which is a detection element, is mounted on the upper end of the pivot plate (16). A follow-up roller (17) whose surface perpendicular to IA) is made of a non-slip material, for example, flexible rubber, is pivoted with a shaft (17A) in the left-right direction, and is constantly driven by the biasing force of the spring (15).
IA) is pressed against the bottom surface of the IA).

At the center rear of the bottom piece (IIA) of the rotating frame (11), there is a first
The front end of the swing piece (18A) facing in the front-rear direction of the drive plate (18) is fixed, and the center of the drive piece (18B) facing in the left-right direction is fixed to the rear end of the swing piece (18A+). Both ends of the drive piece (18B+) are slightly curved toward the front. Immediately after the drive piece (18b) on the board (10), there is a pair of left and right ends that are close to and opposite to the drive piece (18A). 1 limit switch (191 (19) (detection means) is fixed.

On the other hand, a second drive plate (
The front end of a mounting piece (20A) facing in the front-rear direction of the mounting piece (20) is fixed, and the center of a drive piece (20B+) facing in the vertical direction is fixed to the rear end of the mounting piece (20A+).
Both ends of B+ are slightly curved toward the front, similar to the previous example. A support plate (2) is installed upright at the rear end of the board (10).
At the upper end of the front surface of the drive piece (21), a pair of upper and lower second limit switches (22
)(22+ (detection means) is fixed.

According to the above-mentioned device, when a twisting phenomenon, a lateral meandering, or both occur in the rolled outgoing belt (IA), the outgoing belt H1,A+ is constantly moved by the biasing force of the spring (15). The follower roller (17), which is a detection element in pressure contact with the belt, swings left and right following the torsion of the outgoing belt (IA), so that the arm (13) that pivots the follower roller (17) and the arm The rotating frame (
11) and a first drive plate (1) fixed to the rotation frame (11).
8) both swung left and right around the first bin (12), and the drive piece (18Bl) closed either the left or right first limit switch (19), causing a twisting phenomenon in the outgoing belt (1A). This will be announced.

Further, when the outgoing belt (1A) meanders in the vertical direction perpendicular to the axis (17A), that is, in the centripetal direction of the rounded conveyor belt (1), the following roller (17), which is a detection element, The pivoting arm (13) and the arm (9)
) The second drive plate (20) fixed to the rear end of the arm (13) rotates up and down around the second pin (14), and the drive piece (2 (Ibl) Close the 2 limit switch (22) T22) to notify the up and down meandering of the outgoing belt (IA).

In addition, the first or second limit switch 9) (221
It is preferable that an alarm device and a corrective device (none of which are shown) be activated when the alarm is activated.

In the above embodiment, the first and second drive plates (18) (2
0) are controlled by the first and second limit switches (19
) (Although it was detected using 221, both limit switches (19)) (In place of 221, a photoelectric sensor or a proximity sensor may be used.

FIG. 5 shows another embodiment of the first invention.

In this example, a horizontal shaft (24) facing in the left-right direction is installed between the upper ends of a pair of left and right columns (23) (231) erected on the board (10), and the middle part of this shaft (24) is The sleeve (2) has enlarged diameter flanges (25A) at both ends.
5) is fitted onto the outside so as to be movable in the axial direction.

(10) Both enlarged diameter flanges in this sleeve (25)
(25Al (Between 25A1, a follow-up roller (26), which is a detection element, is rotatably fitted with a bearing (27), and on the follow-up roller (26), the conveyor belt is rolled up). (IA) is placed there.

Compression coil springs (28) fitted onto the shaft (24) are compressed between both ends of the sleeve (25) and each support column (23), and the sleeve (25) is normally compressed by both compression coil springs. The biasing forces of (28) are balanced and located approximately at the center of the shaft (24).

Then, on the substrate (10), a following roller (26) is mounted on the shaft (
A pair of left and right limit switches (29) (24) are adapted to be actuated by coming into contact with the side ends of the following roller (26) when the limit switch (24) is displaced from the center position to either the left or right side.
9) (Detection means) is provided.

Even with this configuration, a rolled outgoing belt (IA
), when a twisting phenomenon, lateral meandering, or both occur, the follower roller (26) follows it and moves the sleeve (25) against the biasing force of the compression coil spring (28).
At the same time, it is deflected in the direction of the axis (24), and either the left or right limit switch (29) is activated to notify that the above phenomenon has occurred.

In this example, the shaft (24) is movable up and down, biased upward and supported on the board (10), and a pair of upper and lower limit switches are used to detect the vertical movement of the shaft (24). By providing a detection means such as (not shown), it is possible to provide an embodiment of the second invention.

(Effects of the Invention) According to the first invention, the twisting phenomenon of the rolled conveyor belt (1) and the following roller (171
Meandering in the axis (17Al (24) direction of 261) can be reliably detected with a simple configuration.

On the other hand, according to the second invention, the following roller [7]
] It is also possible to detect the meandering of the conveyor belt (1) in the direction perpendicular to the axis (17A) (241) of (26).

[Brief explanation of drawings]

Fig. 1 is a side view of an embodiment of the present invention, and Fig. 2 is a side view of the embodiment of the present invention.
3 is a cross-sectional view taken along the line -■, FIG. 3 is a sectional view taken along the line ■-■ in FIG. 1, FIG.
FIG. 6 is a schematic side view of a conventional pipe conveyor, and FIG. 7 is an enlarged sectional view taken along the line ■-■ in FIG. 6. 1) Conveyor belt 10) Substrate (support body) 11A) Bottom piece 131 arm 151 tension spring 17) Following roller 18) First drive plate 18B) Drive piece 19) First limit switch 20) Second drive plate 20B) Drive piece 22) 2nd limit switch 23) Pillar 25) Sleeve (1 1A) Outbound belt 11) Rotating frame 12 1st pin 14 2nd pin 16) Pivot plate 17A) Shaft 18A) Swinging piece (detection means) (20A) Mounting piece (21) Support plate switch (detection means) (24) Shaft (25Al expanded diameter flange 3) (26) Following roller (27) Bearing (28) Compression coil spring (29) Limit switch (detection means)

Claims (3)

[Claims] (1) In a pipe conveyor in which an endless belt-shaped conveyor belt is wound between a pair of rollers and is rolled up into a pipe shape and rotated between the two rollers, the belt is pressed against the outer peripheral surface of the rolled conveyor belt. Twisting, etc. in a pipe conveyor characterized by comprising a detection element movable in a substantially tangential direction of the outer circumference, and a detection means for detecting movement of the detection element in the tangential direction as a conveyor belt moves laterally. detection device. (2) In a pipe conveyor in which an endless belt-shaped conveyor belt is wound between a pair of rollers and is rolled up into a pipe shape and rotated between the two rollers, the belt is pressed against the outer peripheral surface of the rolled conveyor belt. a sensing element movable in a substantially tangential direction of the outer periphery and in a centripetal direction of the rounded conveyor belt; a sensing means for detecting movement of the sensing element in the tangential direction as the conveyor belt moves; A detection device for detecting twisting, etc. in a pipe conveyor, comprising a detection means for detecting movement of the pipe conveyor. (3) The detection element is a follow-up roller capable of rotating around an axis oriented substantially tangentially to the outer circumference of the conveyor belt, and is characterized in that it rolls and moves in close contact with the outer circumferential surface of the conveyor belt. A device for detecting twisting, etc. in a pipe conveyor according to claims 1 and 2.