JPH08225124A - Belt conveyor equipment - Google Patents

Abstract

(57) [Summary] [Purpose] This is a belt conveyor device that can freely convey from horizontal to vertical, and is particularly effective when the excavated soil and the like are carried to the ground and the opening cannot be made large. Provide a belt conveyor device. In this belt pinching machine, a circulation guide rail 6 extending symmetrically to the left and right of a conveyor endless belt 3 extending in a tubular shape in an annular shape as a whole in the conveying section B to D sections. And a pinching unit 5 provided symmetrically on the circulation guide rail 6 and a connecting member 11 for connecting these in a ring shape. The pinching unit 5 is guided and supported by the circulation guide rail 6. The traveled carrier 7 and the arcuate sandwiching plate 9 are connected via a telescopic rod 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt conveyor device which can freely convey an object to be conveyed between positions having different heights, especially in a vertical direction, and to the ground such as excavated soil. The present invention provides a belt conveyor device which is effective when a large discharge opening cannot be taken in carrying out the above.

[0002]

2. Description of the Related Art As a conventional belt conveyor device, for example, there have been the followings. As shown in FIG. 7, the belt conveyor device 1 is provided with two conveyor endless belts 20 and 21, which are a discharge section 22 including a horizontal component, a loading section 23, and a vertical component therebetween. , And is arranged so as to face each other in the vertical transport section 24. In addition, the endless belts 20 and 21 for each conveyor are provided with weights 27 and 2.
The motor 25 circulates while tensioned by the motor 8.

When an object to be conveyed is put into the hopper 26 in the loading section 23 below the belt conveyor device 1, the object to be conveyed is two opposite endless belts 2 for conveyors.
In the state of being pressed in a sandwich shape between 0 and 21, the conveyor endless belts 20 and 21 rise vertically as they travel, and the two belts are separated from each other in the upper discharge section 22 to discharge the conveyed object. It

As another belt conveyor device,
One conveyor endless belt is extended to a loading section including a horizontal component, a discharging section, and a conveying section including a gradient component. Three endless belts for supporting and guiding the conveyor endless belt are provided. By gradually changing the inclination angles of the two rollers on both sides of the rollers, the cross-sectional shape is changed to a flat shape in the loading section and the discharging section and changed to a tubular shape in the conveying section.

There is generally known a belt conveyor device which holds an object to be conveyed by an internal friction of the endless belt for a conveyor formed in a tubular shape and conveys a gradient.

[0006]

However, the conventional belt conveyor device has the following problems. That is, in the above-mentioned first one, since the two belts cannot convey the conveyed object while completely enclosing the conveyed object, there is a risk that the conveyed object may be scattered or spilled by wind during vertical conveyance. was there. Further, when a heavy object to be conveyed has a weight larger than the pressing force of the two conveyor endless belts, there is a risk that the object to be transported slips off and becomes unmovable.

In addition, in the belt conveyor device shown in the second, although it is possible to prevent the spillage of the conveyed object, the conveyed object is conveyed only by the internal friction between the conveyed object and the inner surface of the belt. There was a limit to the gradient bending of the route of, and this had to take a long transportation path for upward transportation. The present invention has an object to solve these problems, and provides a belt conveyor device capable of preventing spillage of an object to be conveyed and capable of conveying at any angle from horizontal to vertical.

[0008]

SUMMARY OF THE INVENTION A belt conveyor device according to the present invention comprises a conveyor endless belt extending midway between different height positions, and the conveyor endless belt extending between the different height positions. In a pipe type belt conveyor device for guiding and forming a tubular shape during traveling to hold an object to be conveyed inside the conveyor endless belt formed in the tubular shape, the tubular endless belt for the conveyor It is characterized in that it is provided with a belt pinching machine which is arranged so as to face the portion formed at the side from the side and to move at the same speed in the same direction.

That is, this means that the loading section and the discharging section of the objects to be conveyed, which are located above and below, and the conveying section between them,
It is extended by a conveyor endless belt made of flexible synthetic resin, metal, etc. This conveyor endless belt is guided and supported on the entire inner peripheral part by rollers, etc. In the section, the belt cross section is guided and formed in a flat shape, and in the conveying section, the belt cross section is guided and formed in a tubular shape.

The endless belt for conveyor and the belt squeezing machine are generally driven by a prime mover such as an electric motor. These prime movers can be controlled by a microcomputer or the like to make both rotation speeds constant. There is also a method of driving both the conveyor endless belt and the belt pinching machine with one prime mover. As a specific mode of this belt pinching machine, the circulation guide rails provided symmetrically on both sides of the tubular transport section of the endless belt for conveyor, and the symmetrical guide rails provided on this circulation guide rail. A plurality of clamping units,
The circulation guide rail may be formed of a connecting member for annularly connecting the pinching units, and a section steel having a H-shaped section, a T-shaped section, or the like may be used for the circulation guide rail. Further, a metal chain, wire rope or the like can be used as the connecting member.

This clamping unit includes an arcuate clamping plate,
In some cases, the traveling carrier, which carries the sandwich plate and is guided and supported by the circulation guide rail, is connected through an expansion rod, and the traveling carrier is a rolling element having rollers, bearings, and the like. The telescopic rod may be provided with an elastic body such as a coil spring, a damper, a leaf spring, or the like.

Further, the squeezing units which are symmetrically provided are guided and supported by the circulation guide rails by changing the spacing equally between the parallel circulation guide rails centering on the tubular portion of the conveyor endless belt. The pinching amount of the pinched pressure unit is changed. Further, there may be a case where the crosspiece for preventing the fall of the transported object is provided on the belt at a plurality of positions, and the shape thereof may be circular, elliptical or the like having the same shape as the tubular belt cross section in the vertical transport section.

Further, in this belt conveyor device,
In order to drive the belt pinching machine, a plurality of rod-shaped arm members made of wood or metal that are radially supported on the peripheral surface of the drive shaft of the prime mover may be engaged with the pinching unit.

[0014]

According to the above construction, the belt pinching machine of the belt conveyor device reduces the diameter of the tubular portion of the endless belt for the conveyor, which is the object to be slid down due to gravity. As shown in FIG. Then, the conveyor endless belt and the belt pinching machine travel at a constant speed by controlling the rotational speeds of the prime movers provided on the conveyor endless belt and the belt pinching machine, respectively. Further, when both the endless belt for conveyor and the belt squeezing machine are driven by one prime mover, speed control becomes unnecessary.

The circulation guide rails guide and support the pinching units provided symmetrically on the left and right sides of the tubular endless belt for a conveyor. When the distance between the circulation guide rails is narrowed, the stroke of the pinching unit on the circulation guide rail becomes narrower in synchronization with the distance between the circulation guide rails. As a result, the object to be conveyed is pinched.

Further, the sandwiching plate of the sandwiching unit is formed into an arc shape so as to sandwich the sandwiching plate from both sides, so that the conveyed object receives the compressive load uniformly from the entire outer peripheral surface of the tubular belt. Further, the traveling carrier of the pinching unit is rotatably guided and supported by the circulation guide rail, and the load that the pinching unit receives from the transported object in the belt is transmitted to the circulation guide rail.

Further, the elastic body in the telescopic rod is compressed when it is not displaced even when a predetermined load is applied to the belt and the object to be conveyed. As a result, the elastic body absorbs the excessive clamping force of the clamping unit, and prevents the traveling carrier or the circulation guide rail from being damaged and the belt and the belt clamping machine from traveling poorly. Further, the connecting member connected between the respective pinching units runs the pinching units while keeping the pitch of the adjacent pinching units constant.

Then, the falling prevention bar of the conveyed object supports the conveyed object which slips in the belt without leakage, and reduces the load received by the clamping unit from the conveyed object. It should be noted that a plurality of arm members provided on the drive shaft of the motor drive the connected pinching units by successively engaging with each pinching unit.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A typical embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, reference numeral 1 indicates a belt conveyor device, which is an underground space 30.
This is an example of the case where the transported object 4 such as earth and sand generated when excavating the ground is transported from the discharge opening portion 31a provided in the floor slab 31 to the ground.

This belt conveyor device 1 circulates and rotates an endless belt 3 for a conveyor, which is an annular conveyor, by rotating rollers 2a to 2e arranged along the inner or outer surface thereof. It is to be transported. A drive shaft 2x of a roller drive unit 2 (not shown) is connected to the rotation roller 2a, and the rotation roller 2a serves as a drive roller to drive the conveyor endless belt 3.

Here, the side where the conveyor endless belt 3 conveys the conveyed object 4 is a forward path portion, and the other side is a return path portion. Then, the forward path is used for the transported object 4
Sections G and A for loading the conveyor endless belt 3 onto the conveyor, transfer sections B, C and D for transferring the object 4 to the ground from the discharge opening 31a provided in the floor slab 31, and the transferred objects. It is divided into discharge sections E and F for discharging the article 4 to the bucket 32.

In the forward path of the conveyor endless belt 3, the advancing direction of the loading sections G and A and the conveying section B is horizontal, and the traveling from the boundary between the conveying sections B and C to the middle of the conveying section C. The direction is arcuate because it changes from horizontal to vertical, and the traveling direction from the vertical end portion of the conveyance section C to the conveyance section D is arcuate because it changes horizontally, and from the conveyance section D to the discharge section E. Is horizontal, and the discharge section F is arcuate at the end thereof along the rotating roller 2a.

The conveyor endless belt 3
The return path is a straight line having an angle of 45 degrees with respect to the floor slab 31 from the middle of the discharge section F, and the other sections are guided by the rotating rollers 2a to 2e to sections from G to E. , Is almost along. Loading section G, A
, Three guide rollers 2f, 2f, 2f contacting the lower side of the conveyor endless belt 3 are formed by changing the axial angles of the guide rollers 2f, 2f, 2f.
It is arranged so that 2f rises inward and inclines,
Further, in the discharge section E, the guide rollers 2g, 2g, 2g contacting the lower side of the conveyor endless belt 3
Similarly, three belts are arranged in the width direction of the belt by changing the respective axial directions, and the guide rollers 2g, 2g on both sides are arranged so as to rise and incline inward.

The guide rollers 2f, 2f, 2f and the guide rollers 2g, 2g, 2g are formed in a trough shape by inclining both end portions of the conveyor endless belt 3 in the width direction to be inclined inward. , A plurality of sets are arranged along the conveyor endless belt 3 in the loading sections G and A and the discharge section E. Then, the guide rollers 2f,
The axial angles of 2f and 2f are set to be smaller in the traveling direction of the loading section A, and conversely, to the guide roller 2
The axial angles of g, 2g, and 2g are set to be larger as the direction of travel advances in the E section.

Therefore, the conveyor endless belt 3 stretched so as to circulate and rotate is gradually formed into a tubular shape by being guided by the guiding rollers 2f, 2f, 2f in the loading section A, and then discharged. At E, it is guided by the guide rollers 2g, 2g, 2g and gradually returned from a tubular shape to a flat shape. In the conveying sections B, C, and D where the conveyor endless belt is formed in a tubular shape, belt pinching machines are arranged on both sides in the width direction of the conveyor endless belt 3. This belt pinching machine is composed of circulation guide rails 6, 6, pinching units 5, 5, ... And a drive unit 12. The drive unit 12 is driven by a prime mover 13 which is an electric motor.

Here, the roller drive unit 2 for driving the endless belt 3 for the conveyor and the drive unit 12 for driving the belt pinching machine are controlled to rotate at the same speed. As this control method, for example, the following method is available. First, the rotation speed of the roller drive unit 2 and the rotation speed of the drive unit 12 are measured, and these are converted into digital signals via an encoder or the like. Next, a voltage value applied to the prime mover is calculated via a microcomputer so as to eliminate the difference between the two rotational speeds. Then, the voltage value data is applied as an analog signal via a decoder or the like to the prime mover 13 to synchronize with the rotation speeds of both the drive unit 12 and the roller drive unit 2. Here, the roller driving unit 2 that drives the conveyor endless belt 3 and the driving unit 12 that drives the belt pinching machine are driven by different prime movers, but a method of driving by one prime mover may be considered. .

The circulation guide rails 6 and 6 are used for conveying section B,
Symmetrically to the left and right of the tubular portion of the conveyor endless belt 3 in the forward and backward paths of C and D,
The circulation guide rails 6, 6 are extended so as to form an annular shape as a whole. As shown in FIGS. 2 and 3, the interval between the circulation guide rails 6 and 6 is W1 in the loading section A, and gradually becomes smaller from W1 in the transport section B as it advances in the traveling direction. In the transport section C, W2 is set. Further, the interval between the circulation guide rails 6, 6 in the transport section D is set so as to gradually widen from W2 as it progresses in the traveling direction and becomes W1 from the transport section E to the loading section G. .

Further, as shown in FIGS. 2 (b) and 2 (c),
The pinching units 5, 5, ... Are composed of the traveling carriers 7, 7, the telescopic rods 8, 8 and the pinching plates 9, 9, as shown in FIG.
As shown in FIG. 7, the circulating guide rails 6 and 6 are guided and supported so as to face each other, and the connecting members 11, 11 ...
Are connected in a chain by. Then, along the circulation guide rails 6 and 6, the conveyor endless belt 3 travels at the same speed in the same direction to clamp the tubular portion of the conveyor endless belt 3.

Further, as shown in FIG. 4, each traveling carrier 7 has a flange portion 6c of each circulation guide rail 6.
It is guided and supported by a main roller 7a, a side roller 7b and a frame 7c. The main roller 7a is a flange portion 6c of the circulation guide rail 6.
The side rollers 7b are arranged so as to roll on the outer side surface 6cx, and are arranged so as to roll on both outer side surfaces 6cz of the flange portion 6c. The frame 7c holds the rotary shafts of these rollers. There is.

The frame 7c has a box shape, and a cutout portion 7d into which the circulation guide rails 6 and 6 can be inserted is provided at the rail-side center portion of the outer side surface 7cy. Further, as shown in FIG. 2, the telescopic rod 8 is vertically welded and fixed to the central portion of the outer surface 7cx of the frame 7c, and is composed of a cylinder 8a, a plunger 8b and a coil spring 8c combined in a telescopic manner. To be done.

The cylinder 8a is welded and fixed to the outer surface 7cx of the frame 7c, the plunger 8b carries a sandwiching plate 9 at its free end, and is inserted axially movably into the cylinder 8a. 8c is wound around the outer peripheral surface of the plunger 8b and is provided between the cylinder 8a and the sandwiching plate 9. Further, FIG.
As shown in (c), the sandwich plate 9 is a plate-like body, and is a rectangular plate formed in an arc shape along its longitudinal direction.

Further, the drive unit 12 shown in FIG. 5 includes a prime mover 13, a drive shaft 12a which rotates by the prime mover 13, and twelve arm members 12 radially protruding from the outer peripheral surface of the drive shaft 12a.
b, 12b ... and their arm members 12b, 12b
... and the drive shaft 12a are reinforced by a reinforcing plate 12c. The number and length of the arm members 12b, 12b ..., and the distance between the telescopic rods 8, 8 are determined by rotating the driving unit 12 so that the arm members 12b, 12b.
.. are adjusted so that the portions of the cylinders 8a of the telescopic rods 8, 8 ... Can be successively engaged.

Now, the operation of the belt conveyor device 1 will be described. First, as shown in FIG. 1, the transported object 4 loaded on the conveyor endless belt 3 in the loading section G is moved by the guide rollers 2f, 2f, 2f in the loading section A to the state shown in FIG. Endless belt 3 for a conveyor formed in a tubular shape as shown in FIG. 2B from the trough shape shown in FIG.
Wrapped by

Next, as shown in FIG. 2 (c) and FIG.
The pinching units 5 and 5 running along the circulation guide rails 6 and 6 pinch the tubular portion of the conveyor endless belt 3 by the pinching plates 9 and 9. Then, the tubular portion of the conveyor endless belt 3 is conveyed to the conveying section D as it is while being pressed, and is returned from the tubular shape to the planar shape by the guide rollers 2g, 2g, 2g to be conveyed. The article 4 is released in the discharge section E.

Finally, the object 4 is discharged into the bucket 32 from the end of the discharge section F. As described above, the intervals of the circulation guide rails change smoothly in each section, and the pinching units provided symmetrically opposite to each other also narrow the intervals depending on the section in which the rails travel, thereby sandwiching them. By changing the amount, the conveyor endless belt can be moved at the same speed in the same direction while automatically pinching it from the left and right sides.

Further, since each traveling carrier 7 is mounted on the flange portion 6c of each circulation guide rail 6 so that each rotatable roller rolls, so that each traveling carrier 7 extends along the circulation guide rails 6, 6. You can drive smoothly. Furthermore, a series of pinching units 5, 5 ...
Since a bendable metal chain is used for the connecting members 11, 11 ... Which connect to each other, the pinching units 5, 6 are arranged along the circular guide rails 6, 6 that are bent in an arc shape. 5 ... Even when traveling, the connecting member 1
.. can bend freely, and there is no hindrance to the traveling of the pinching units 5, 5 ,.

The telescopic rod 8 is provided with the sandwiching plate 9
Even if it receives an irregular force from the conveyor endless belt 3, the coil spring 8c is located between the cylinder 8a and the sandwiching plate 9 and expands and contracts, so that the conveyor endless belt 3 always has a substantially constant force. The tubular portion can be clamped, and even when the amount of the transported object 4 is large, it is possible to prevent the traveling carriers 7, 7 from being damaged or traveling defective, and the circulation guide rails 6, 6 from being deformed. it can.

Further, since the sandwiching plate 9 is curved, it can be brought into close contact with the tubular portion of the conveyor endless belt 3, and the transported object 4 inside thereof can be securely sandwiched. be able to. Further, in the drive unit 12, since the arm members 12b, 12b, ... Are adjusted so as to be sequentially engaged with the cylinders 8a of the telescopic rods 8, one drive motor 13 rotates the drive shaft 12a. Thus, the belt pinching machine provided symmetrically can be rotated.

Therefore, this belt conveyor device 1
Means that the transported object 4 in the tubular endless belt 3 for the conveyor tends to slip down due to gravity,
The conveyor endless belt 3 is squeezed and held from the left and right, and the conveyor endless belt 3 travels at the same speed in the same direction as the conveyor endless belt 3 to reliably convey the object 4 to be conveyed at any angle from horizontal to vertical. Is possible.
As a result, the conveyance speed is improved, and efficient work can be performed. Further, since the transported object 4 does not drop off from the belt during transportation, it is possible to work safely around the belt conveyor device 1. Further, since the belt conveyor device 1 can perform reliable vertical conveyance, it can be used even when the discharge opening provided in the floor slab or the like is relatively small, and the space can be effectively used, and the conveyance position can be improved. It becomes possible to select and transport a relatively short route.

As shown in FIG. 6, it is possible to provide drop-preventing bars 3a on the outer surface of the conveyor endless belt 3 at predetermined intervals over the entire circumference. It is preferable that the shape and size of the rail 3a be such that it is inscribed in the tubular endless belt 3 formed in a tubular shape in the section B, which is the vertical transport unit. By providing such a fall prevention bar 3a,
The transported object 4 that tends to slide down inside the conveyor endless belt 3 can be supported without leakage, and the load that the sandwiching plate 9 receives from the transported object 4 can be reduced.

Incidentally, the conveyor endless belt 3
As the material of, from the viewpoint of durability and flexibility, synthetic resin,
Synthetic rubber and the like, or those obtained by reinforcing these with cotton or metal fibers are preferable. In addition, the circulation guide rails 6, 6
Uses a special shaped steel with an H-shaped cross section here,
It is also possible to use special shaped steels such as shapes.

Further, although the traveling carriers 7, 7 guide and support the circulation guide rails 6, 6 by using rollers here, rolling elements having bearings or the like can also be used. Then, the connecting members 11, 11 ...
Here, a metal chain is used here, but a wire rope or the like can also be used.

Further, although the expandable rods 8 and 8 have a structure in which they can be expanded and contracted by using a coil spring 8c here, they have an elastic structure in which an elastic body such as a gas damper or a leaf spring is used. Etc. can also be used. Further, as the sandwiching plate 9, a steel plate bent in an arc shape is used here, but a steel or wooden rod-shaped object processed into an arc shape or an arc shape may be used. .

Further, as a prime mover for driving the roller driving section 2 and the driving section 12, it is preferable to use an electric motor in consideration of easiness of control and the like, but it is not limited to this.

[0045]

As described above, the belt conveyor device according to the present invention can carry out reliably without causing spillage during traveling. Further, it is safe because the transported object does not slip off from the belt. Further, this makes it possible to increase the conveying speed as compared with the conventional one, and it is possible to perform efficient work.

Further, since this belt conveyor device can convey at any angle from horizontal to vertical, a narrow space can be effectively utilized, and further, it is possible to convey to the destination by the shortest route. it can.

[Brief description of drawings]

FIG. 1 is a schematic view showing a typical embodiment of this belt conveyor device.

FIG. 2 is a partially enlarged sectional view of this belt conveyor device. 7A is an enlarged sectional view taken along line X--X, FIG. 7B is an enlarged sectional view taken along line Y--Y, and FIG. 7C is an enlarged sectional view taken along line Z--Z. It is a figure.

FIG. 3 is an enlarged plan view of a portion H in FIG.

FIG. 4 is a partially enlarged sectional view of this belt conveyor device. 3A is an enlarged sectional view taken along the line PP--P in FIG. 3, FIG. 7B is an enlarged sectional view taken along the line Q--Q in FIG. 3, and FIG. 3B is an enlarged cross-sectional view taken along line RR in FIG.

FIG. 5 is an enlarged view of a main part of a drive unit of this belt conveyor device. FIG. 7A is an enlarged plan view of the drive unit, and FIG. 7B is an enlarged cross-sectional view taken along the line S--S in FIG.

FIG. 6 is an enlarged cross-sectional view of a main part of a drop-preventing bar arranged on a conveyor endless belt of this belt conveyor device. FIG. 7A is an enlarged cross-sectional view of a main part of the fall-preventing bar before the conveyor endless belt is formed into a tubular shape, and FIG. 7B is a cross-sectional view after the conveyor endless belt is formed into a tubular shape. FIG. 3 is an enlarged cross-sectional view of a main part of the drop prevention rail of FIG.

FIG. 7 is a perspective view showing a conventional example of the present invention.

[Explanation of symbols]

 1 Belt Conveyor Device 2 Roller Drive Unit 2a Rotating Roller 2f Guide Roller 2g Guide Roller 3 Conveyor Endless Belt 4 Conveyed Object 5 Clamping Unit 6 Circulation Guide Rail 7 Traveling Carrier 8 Telescopic Rod 9 Clamping Plate 10 Strut 11 Connection Member 12 Drive unit

Claims (7)

[Claims] 1. An endless belt for a conveyor extends midway between different height positions, and both end portions in the width direction are overlapped with each other while the endless belt for a conveyor extended between the different heights is running. By forming a tubular guide,
In a belt conveyor device which holds an object to be conveyed inside the endless belt for conveyor formed in a tubular shape and conveys the same, in the stroke section where the part formed in a tubular shape of the endless belt for a conveyor exists, the conveyor A belt pinching machine provided with a pinching unit that opposes a tubular portion of the endless belt for use laterally and that moves at the same speed in the same direction as the conveyor endless belt. Conveyor equipment. 2. The belt conveyor device according to claim 1, wherein the belt pinching machine includes circulation guide rails symmetrically provided on the left and right sides of a tubular portion of the conveyor endless belt, and the circulation guide. A belt conveyer device comprising: a plurality of symmetrical pressing units provided on a rail; and a connecting member for connecting the pressing units in an annular shape. 3. The belt conveyor device according to claim 2, wherein the pinching unit includes an arcuate nipping plate and a traveling carrier that carries the nipping plate and is guided and supported by the circulation guide rail. , A belt conveyor device characterized by being connected via a telescopic rod. 4. The belt conveyor device according to claim 2, wherein the clamping unit is sandwiched by changing the interval equally around the tubular portion of the conveyor endless belt of the circulation guide rail. A belt conveyor device characterized in that the amount is changed. 5. The belt conveyor device according to claim 2, wherein a plurality of arm members radially supported on a peripheral surface of a drive shaft of a prime mover are used to drive the belt pressing machine.
A belt conveyor device characterized by being engaged with the pinching unit. 6. The belt conveyor device according to claim 1, wherein a crosspiece for preventing a conveyed object from falling is provided on the conveyor endless belt. 7. The belt conveyor device according to claim 3, wherein the elastic rod is provided with an elastic body.