WO2019174060A1

WO2019174060A1 - Conveyor belt replacement device and conveyor belt pulling mechanism for belt conveyor

Info

Publication number: WO2019174060A1
Application number: PCT/CN2018/079688
Authority: WO
Inventors: 寇子明; 吴娟; 高贵军; 张静; 薛佳保; 王松岩
Original assignee: 太原理工大学
Priority date: 2018-03-15
Filing date: 2018-03-20
Publication date: 2019-09-19
Also published as: ZA202001181B; CN108275409A; AU2018413069B2; AU2018413069A1

Abstract

Disclosed are a conveyor belt replacement device and a conveyor belt pulling mechanism for a belt conveyor. The conveyor belt pulling mechanism comprises a rack (1), a fixed belt pressing seat (2) and a movable belt pressing seat (3), wherein the fixed belt pressing seat (2) is fixed to the rack (1), the movable belt pressing seat (3) is slidably installed on the rack (1), and the movable belt pressing seat (3) is able to perform a linear reciprocating motion relative to the fixed belt pressing seat (2); and a conveyor belt (6) passes from the movable belt pressing seat (3) out of the fixed belt pressing seat (2); and in the case where the conveyor belt (6) is alternately pressed by the fixed belt pressing seat (2) and the movable belt pressing seat (3), the belt pulling mechanism pulls the conveyor belt (6) to move by means of the linear reciprocating motion of the movable belt pressing seat (3).

Description

Conveyor belt changing device for belt conveyor and belt pulling mechanism

Technical field

The invention relates to a belt conveyor maintenance technology, in particular to a conveyor belt replacing device of a belt conveyor and a belt pulling mechanism.

Background technique

Belt conveyor is an important equipment in coal production. It has an irreplaceable role in coal production and is an extremely important part of achieving coal from the working surface to the ground. Among them, the conveyor belt is the carrier for carrying and transporting coal, but during the long-term use of the conveyor belt, there is friction between the belt surface and the material, and the friction between the conveyor belt and the drum causes the conveyor belt to be scratched, even Corrosion and fracture of the steel wire rope have laid a safety hazard to the operation of the conveyor belt. Therefore, in order to ensure the safe and stable operation of the conveyor belt, it must be replaced regularly. As the coal transportation volume continues to increase, the length, volume and weight of the conveyor belt will also increase accordingly, and the surrounding conditions of the belt conveyor equipment are complicated. As a result, the work of replacing the conveyor belt is very complicated and arduous. Especially for conveyors with large inclination and long distance, it is more difficult to change the conveyor belt, and it is prone to accidents such as slipping and breaking belts. Because the downhole operation is forced to stop production during the replacement of the conveyor belt, the length of time for replacing the conveyor belt is directly Affecting the production and economic benefits of coal mines and shortening the time for replacing conveyor belts are crucial to improving the economic benefits of the coal industry.

In response to the above problems, the industry has also proposed many conveyor belt replacement devices, but the current conveyor belt replacement devices have the problems of high energy consumption, large volume, complicated structure, and unreliable operation.

Summary of the invention

In view of the above, an object of the present invention is to provide a belt changing device for a belt conveyor and a belt pulling mechanism for a belt conveyor, which have low energy consumption, small volume, simple structure and reliable operation.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

The embodiment of the invention provides a conveyor belt drawing mechanism, comprising a frame, a fixed pressing belt seat and a movable pressing belt seat; the fixed pressing belt seat is fixed on the frame, and the movable pressing belt seat is slidable Mounted on the frame, the movable press belt seat can linearly reciprocate relative to the fixed press belt seat; the conveyor belt penetrates from the movable press belt seat, and passes out from the fixed press belt seat In the case where the fixed press belt seat and the movable press belt seat alternately press the conveyor belt, the draw belt mechanism reciprocates by the linear movement of the movable press belt seat to pull the movement of the conveyor belt.

As an implementation manner, the frame is provided with a first hydraulic cylinder that drives the movable pressure belt seat to linearly reciprocate, and the fixed end of the first hydraulic cylinder is fixed to the frame, the first hydraulic cylinder The power output end is connected to the movable pinch seat; the moving direction of the first hydraulic cylinder power output end is the same as the moving direction of the movable pinch seat.

As an implementation manner, the frame is provided with a guide rail for linear reciprocating movement of the movable press belt seat, and the movable press belt seat is provided with a guide wheel that is shaped to match the guide rail and moves on the guide rail.

As an implementation manner, the fixed pressure belt base and the movable pressure belt base each include a bracket and a pressure plate, and the pressure plate can press the pressing movement of the conveyor belt relative to the bracket; the bracket is provided with a driving The pressure plate is a second hydraulic cylinder that is pressed, the fixed end of the second hydraulic cylinder is fixed to the bracket, the power output end of the second hydraulic cylinder is connected to the pressure plate, and the second hydraulic cylinder The power output end moves in the same direction as the pressure plate.

As an implementation manner, the fixed pressure belt base and the movable pressure belt base are respectively provided with an anti-deviation mechanism, and the anti-deviation mechanism includes a first horizontal guide roller and a respectively respectively disposed above and below the conveyor belt a vertical roller disposed on both sides of the conveyor belt, the first horizontal guide roller and the vertical roller forming a rectangular slit through which the conveyor belt passes; the conveyor belt is outside the movable belt seat The anti-tracking mechanism penetrates and passes out from the anti-deviation mechanism outside the fixed crimping seat.

As an implementation manner, an anti-stacking mechanism is disposed between the fixed press belt base and the movable press belt seat, and the anti-overlap mechanism includes a second horizontal guide roller disposed under the conveyor belt, Both ends of the two horizontal guide rollers are fixed to the frame.

As an implementation manner, the fixed end of the second hydraulic cylinder is provided with a return elastic member that pushes the power output end, and when the second hydraulic cylinder is reset, the reset elastic member pushes the pressure plate to The conveyor belt is compressed.

As an implementation manner, the pressure plate includes an upper pressure plate and a lower pressure plate respectively located above and below the conveyor belt, the upper pressure plate is connected to a power output end of the second hydraulic cylinder, and the lower pressure plate is fixed to a bottom of the bracket; a side of the upper and lower pressing plates contacting the conveyor belt is provided with a friction protection layer.

The embodiment of the invention further provides a conveyor belt changing device for a belt conveyor, comprising any of the belt pulling mechanism described above, a tape feeding mechanism for providing a new conveyor belt, and a rewinding of the old conveyor belt. a mechanism; one end of the old conveyor belt is coupled to a new conveyor belt leading from the tape feeding mechanism, and the other end of the old conveyor belt is fixed to the rewinding mechanism through the belt pulling mechanism.

The belt pulling mechanism provided by the invention comprises a frame, a fixed pressing seat and a movable pressing seat; the fixed pressing seat is fixed on the frame, and the movable pressing seat is slidably mounted on the In the rack, the movable press belt seat can linearly reciprocate relative to the fixed press belt seat; the conveyor belt penetrates from the movable press belt seat and passes through the fixed press belt seat; at a fixed pressure In the case where the belt and the movable press belt are alternately pressed against the conveyor belt, the belt pulling mechanism moves through the linear reciprocating movement of the movable belt seat to pull the movement of the conveyor belt; it can be seen that the conveyor belt of the belt conveyor of the present invention The changing device and the belt pulling mechanism of the conveyor belt are used to remove the old conveyor belt from the belt conveyor by linearly reciprocating movement of the movable pressure belt seat when the fixed pressure belt seat and the movable pressure belt seat are alternately pressed against the conveyor belt. At the same time, the new conveyor belt is laid on the belt conveyor. Due to the use of hydraulic pressure as the power, the energy consumption is low, the volume is small, and the linear reciprocating movement of the movable pressure belt seat is driven by the hydraulic cylinder, and there is no need to set the rotation to be converted into a linear movement. Institution, Of simple construction, reliable operation.

DRAWINGS

1 is a perspective view of a belt pulling mechanism of a conveyor belt according to an embodiment of the present invention;

2 is a top plan view of a belt pulling mechanism of a conveyor belt according to an embodiment of the present invention;

3 is a front elevational view showing a belt pulling mechanism of a conveyor belt according to an embodiment of the present invention;

4 is a schematic view of a fixed crimping belt holder in a belt drawing mechanism according to an embodiment of the present invention;

Figure 5 is a schematic view showing a movable press belt seat in a belt pulling mechanism according to an embodiment of the present invention;

6 is a schematic view of an anti-deviation mechanism in a belt pulling mechanism of an embodiment of the present invention.

In the figure: 1, the frame; 11, the first hydraulic cylinder; 111, the piston rod; 12, the guide rail; 2, the fixed press belt seat; 21, the bracket; 221, the upper pressing plate; 222, the lower pressing plate; 223, the friction protective layer 23, the second hydraulic cylinder; 24, the reset elastic member; 3, the movable press belt seat; 31, the roller; 4, the anti-deviation mechanism; 41, the first horizontal guide roller; 42, the vertical roller; 43, the screw; , nut; 5, anti-stacking mechanism; 51, the second horizontal guide roller; 52, the lever; 6, the conveyor belt.

detailed description

An embodiment of the present invention provides a conveyor belt changing device for a belt conveyor and a belt pulling mechanism, the belt pulling mechanism comprising a frame, a fixed belt seat and a movable belt seat; the fixed belt a seat is fixed on the frame, the movable press belt seat is slidably mounted on the frame, and the movable press belt seat can linearly reciprocate relative to the fixed press belt seat; The movable press belt seat penetrates and passes through the fixed press belt seat; in the case where the fixed press belt seat and the movable press belt seat alternately press the conveyor belt, the draw belt mechanism passes through a linear reciprocating of the movable press belt seat Move and pull the belt to move.

The principle of the embodiment of the invention: in the case that the fixed press belt seat and the movable press belt seat alternately press the conveyor belt, the old conveyor belt is unloaded from the belt conveyor by the linear reciprocating movement of the movable press belt seat, and at the same time The new belt is laid on the belt conveyor. Due to the hydraulic power, the energy consumption is low, the volume is small, and the linear reciprocating movement of the movable belt seat is driven by the hydraulic cylinder. There is no need to provide a mechanism for converting the rotation into a linear movement. The structure is simple and the operation is reliable.

The present invention will be further described in detail below in conjunction with the drawings and specific embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that, in the description of the embodiments of the present invention, unless otherwise stated and limited, the term "connected" shall be understood broadly. For example, it may be an electrical connection or a communication between two components, which may be directly connected. It can also be indirectly connected through an intermediate medium, and the specific meaning of the above terms can be understood by a person of ordinary skill in the art according to the specific situation.

It should be noted that the term “first\second\third” according to the embodiment of the present invention is only a similar object, and does not represent a specific ordering for an object. It can be understood that “first\second\第The three" may be interchanged in a specific order or order. It is to be understood that the "first\second\third" distinguished objects may be interchanged as appropriate to enable the embodiments of the invention described herein to be carried out in a sequence other than those illustrated or described herein.

In order to better understand the conveyor belt changing device and the belt pulling mechanism of the belt conveyor, before introducing the belt changing device and the belt pulling mechanism, the conveyor belt of the entire belt conveyor will be introduced. During the replacement process, the conveyor belt replacement process includes: first, stopping the operation of the belt conveyor, and disengaging the power drive unit from the conveyor belt to make the conveyor belt free; secondly, fixing the conveyor belt replacement device to the ground or the underground floor, if It is a inclined shaft conveyor, which is fixed under the head of the upper part of the conveyor. If it is another conveyor, it can be at any position below the conveyor, preferably at both ends of the conveyor; again, the belt corresponding to the conveyor replacement device The old conveyor belt under the conveyor is cut off, and then one end is connected to the rewinding mechanism of the conveyor belt changing device, and the other end is connected to the tape feeding mechanism of the conveyor belt changing device and connected to the new conveyor belt; when connected, It is also necessary to fix a special connecting belt at the head of the two-stage conveyor belt at the cut-off, because after the cut-off, the length of the conveyor belt is insufficient to simultaneously To rewind mechanism and the discharge belt mechanism; and finally, pull open the conveyor belt mechanism to replace the device and retracting mechanism, starting the replacement work.

Wherein, the replacement work can have two working modes; one is an automatic mode, that is, automatic continuous operation after being turned on until the operator is manually stopped; and another is a jog mode, that is, only the preset time after the opening is Automatic stop, such as automatic stop when working for 1 minute, the jog mode is suitable for the debugging phase or to find faults.

Embodiment 1

A first embodiment of the present invention provides a belt pulling mechanism. As shown in FIG. 1 and FIG. 2, the belt pulling mechanism includes a frame 1, a fixed pressing seat 2 and a movable pressing seat 3; The press belt holder 2 is fixed to the frame 1 , and the movable press belt seat 3 is slidably mounted on the frame 1 , and the movable press belt seat 3 can be made relative to the fixed press belt seat 2 a linear reciprocating movement; a conveyor belt 6 penetrating from the movable pinch seat 3, passing through the fixed pinch seat 2, in the case where the fixed pinch seat 2 and the movable pinch seat 3 are alternately pressed against the conveyor belt 6 The movement of the conveyor belt 6 is pulled by the linear reciprocating movement of the movable pinch seat 3.

Thus, in the case where the fixed press belt base 2 and the movable press belt base 3 are alternately pressed against the conveyor belt 6, the straight belt is reciprocated by the movable press belt seat 3, and the old conveyor belt is pulled out from the belt conveyor while pulling The new conveyor belt is laid onto the belt conveyor; specifically, the following steps can be included:

1) The fixed press belt seat 2 presses the conveyor belt 6, the movable press belt seat 3 releases the conveyor belt 6, and the movable press belt seat 3 moves to a limit position away from the fixed press belt seat 2, when the movable press belt seat 3 moves, The conveyor belt 6 remains stationary;

2) The movable press belt seat 3 presses the conveyor belt 6, the fixed press belt seat 2 releases the conveyor belt 6, and the movable press belt seat 3 moves to the extreme position close to the fixed press belt seat 2, and the movable press belt seat 3 is pressed and conveyed. The belt 6 is in a loosened state, and the conveyor belt 6 moves with the movement of the movable pinch seat 3 and passes through the fixed pinch seat 2 to enter the rewind mechanism.

By performing the above steps cyclically, the conveyor belt 6 can be pulled out from the belt conveyor; in particular, the implementation of the above steps can be controlled by a programmable logic controller (PLC).

As shown in FIG. 1-3, the frame 1 is provided with a first hydraulic cylinder 11 for driving the movable pressure belt base 3 to linearly reciprocate, and the fixed end of the first hydraulic cylinder 11 is a cylinder. Fixed to the frame 1, the power transmitting end of the first hydraulic cylinder 11, that is, the piston rod 111 is connected to the movable clamping seat 3, the moving direction of the piston rod 111 and the movable pressing seat The direction of movement is the same. The use of hydraulic pressure as the power makes the belt pulling mechanism low in energy consumption and small in volume, and the linear reciprocating movement of the movable pressing seat 3 by the hydraulic cylinder does not require a mechanism for converting the rotation into a linear movement, such as a silk mother wire. Rods, racks and other mechanisms, simple structure and reliable operation.

In the embodiment, the number of the first hydraulic cylinders 11 may be two, so that both the power can be provided and the force of the movable crimping seat 3 is more balanced.

As shown in FIGS. 4 and 5, the frame 1 is provided with a guide rail 12 for linearly reciprocating movement of the movable pinch seat 3, and the movable pinch seat 3 is provided with a shape matching with the guide rail 12, The guide wheel 31 that moves on the guide rail is described, so that the linear reciprocating movement of the movable pinch seat 3 is smoother.

In this embodiment, the guide rail 12 may be a channel steel, and the guide wheel 31 may be a roller matched with the channel steel. For smooth movement, the number of rollers may be eight, for example, four on each side.

The fixed press belt base 2 and the movable press belt base 3 each include a bracket 21 and a pressure plate, and the pressure plate can press the pressing movement of the conveyor belt 6 relative to the bracket 21; a second hydraulic cylinder 23 that drives the pressure plate to perform a pressing movement, and a fixed end of the second hydraulic cylinder 23, that is, a cylinder is fixed to the bracket 21, and a power output end of the second hydraulic cylinder 23, That is, the piston rod is connected to the pressure plate, and the moving direction of the piston rod is the same as the moving direction of the pressure plate. Here, the pressing motion also uses hydraulic pressure as the power, which also makes the belt pulling mechanism of the belt low in energy consumption and small in volume, and does not need to be rotated to convert into a translation mechanism, and the entire mechanism uniformly uses hydraulic pressure as a power, which can further simplify the structure; In one implementation, the bracket 21 may be a rectangular frame welded from a profile such as channel steel and angle steel, the conveyor belt 6 passing through the rectangular frame inner cavity, and the pressure plate is located above the conveyor belt 6 Or below.

As an implementation manner, the pressure plate may include an upper pressure plate 221 and a lower pressure plate 222 respectively located above and below the conveyor belt 6, and the upper pressure plate 221 is coupled to the piston rod of the second hydraulic cylinder 23, The lower pressing plate 222 is located at the bottom of the bracket 21, and the upper pressing plate can be linearly moved up and down based on the lower pressing plate; the friction plate 223 is provided on one side of the upper pressing plate 221 and the lower pressing plate 222 contacting the conveying belt 6. (The frictional protective layer of the upper platen 221 is not shown in the drawing). In this embodiment, the friction protection layer 223 is a common rubber.

In this embodiment, the number of the second hydraulic cylinders 23 may be two, so that both the power can be provided and the force of the pressure plate is more balanced.

As shown in FIG. 1-3, the anti-deviation mechanism 4 may be disposed on the outer sides of the fixed press belt base 2 and the movable press belt base 3. As shown in FIG. 6, the anti-deviation mechanism 4 includes separate settings. a first horizontal guide roller 41 above and below the conveyor belt 6 and a vertical roller 42 respectively disposed on both sides of the conveyor belt 6, the first horizontal guide roller 41 and the vertical roller 42 forming one for the a rectangular slit through which the conveyor belt 6 penetrates, the conveyor belt 6 penetrating from the anti-deviation mechanism outside the movable pinch seat, and passing through the anti-deviation mechanism outside the fixed pinch seat; The pitch of the vertical roller 42 can be adjusted according to the width of the conveyor belt 6; thus, the conveyor belt 6 is restricted to the rectangular slit; the roller of the vertical roller 42 is rotatable without damaging the edge of the conveyor belt 6. The anti-deviation mechanism 4 is fixed to the frame 1 by a screw 43 and a nut 44.

Wherein, an anti-stacking mechanism 5 may be disposed between the fixed press belt base 2 and the movable press belt seat 3, and the anti-overlap mechanism 5 includes a second horizontal guide roller 51 disposed under the conveyor belt 6. Both ends of the second horizontal guide roller 51 are fixed to the frame 1. The second horizontal guide roller 51 is disposed under the conveyor belt 6, which can prevent the conveyor belt 6 from overlapping or winding itself in a loose state; it can be understood that the anti-overlap mechanism 5 can also be set non- In the present embodiment, the second horizontal guide roller 51 and the stopper 52 are provided to prevent the overlap.

Wherein, the cylinder of the second hydraulic cylinder 23 may be provided with a return elastic member 24 for pushing the piston rod, and when the second hydraulic cylinder 23 is reset, the return elastic member 24 pushes the pressure plate to The conveyor belt 6 is compressed. The function of the return elastic member 24 is to prevent the conveyor belt 6 from slipping and causing an accident in an unexpected situation such as a sudden power failure.

In this embodiment, the return elastic member 24 may be a butterfly spring.

As an implementation manner, the first hydraulic cylinder 11, the anti-deviation mechanism 4 and the anti-overlap mechanism 5 in this embodiment may be connected to the frame by a detachable fixing manner such as a bolt and a nut, and the frame is It can be a welded steel frame with few parts, easy to disassemble and assemble, and easy to transport to the underground.

Embodiment 2

The embodiment of the invention further provides a conveyor belt changing device for a belt conveyor, comprising a belt pulling mechanism, a tape feeding mechanism for providing a new conveyor belt, and a rewinding mechanism for rewinding the old conveyor belt; the old conveyor belt One end of the old conveyor belt is connected to a new conveyor belt that is led out from the tape feeding mechanism, and the other end of the old conveyor belt is fixed to the rewinding mechanism through the belt pulling mechanism.

The structure of the belt drawing mechanism of the conveyor belt, the connection relationship between the components, and the functional principle of each component are the same as those of the belt drawing mechanism of the first embodiment, and will not be described again.

The conveyor belt changing device of the embodiment of the invention adopts hydraulic pressure as the power, has low energy consumption and small volume, and drives the linear reciprocating movement of the drawing mechanism through the hydraulic cylinder, and does not need to provide a mechanism for rotating and linearly moving, and has a simple structure and reliable operation.

The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in Within the scope of protection of the present invention.

Claims

A conveyor belt drawing mechanism, comprising a frame, a fixed pressing belt seat and a movable pressing belt seat; the fixed pressing belt seat is fixed on the frame, and the movable pressing belt seat is slidably mounted on the machine On the shelf, the movable press belt seat can linearly reciprocate relative to the fixed press belt seat; the conveyor belt penetrates from the movable press belt seat and passes through the fixed press belt seat; in the fixed press belt seat In the case where the movable belt is alternately pressed against the conveyor belt, the belt mechanism reciprocates by a linear movement of the movable belt seat to pull the movement of the belt.
A belt pulling mechanism according to claim 1, wherein said frame is provided with a first hydraulic cylinder for driving said movable pressure belt holder for linear reciprocating movement, and said fixed end of said first hydraulic cylinder is fixed to said a power rack of the first hydraulic cylinder is connected to the movable pinch seat; a moving direction of the first hydraulic cylinder power output end is the same as a moving direction of the movable pinch seat.
A belt drawing mechanism according to claim 2, wherein said frame is provided with a guide rail for linear reciprocating movement of said movable pinch seat, said movable pinch seat being provided with a shape matching said guide rail, said A guide wheel that moves on the rail.
A conveyor belt drawing mechanism according to claim 3, wherein said fixed belt base and movable belt base each comprise a bracket and a pressure plate, said pressure plate being capable of pressing said belt with respect to said holder a tight movement; the bracket is provided with a second hydraulic cylinder for driving the pressure plate for pressing movement, a fixed end of the second hydraulic cylinder is fixed to the bracket, and a power output end of the second hydraulic cylinder is connected to the In the pressure plate, the moving direction of the power output end of the second hydraulic cylinder is the same as the moving direction of the pressure plate.
The belt tensioning mechanism according to any one of claims 1 to 4, wherein the fixed pressure belt base and the outer side of the movable pressure belt base are provided with an anti-deviation mechanism, and the anti-deviation mechanism comprises a first horizontal guide roller above and below the conveyor belt and vertical rollers respectively disposed on both sides of the conveyor belt, the first horizontal guide roller and the vertical roller forming a rectangular gap through which the conveyor belt passes The conveyor belt penetrates from the anti-running mechanism outside the movable press belt seat, and passes through the anti-running mechanism outside the fixed press belt seat.
The belt drawing mechanism according to any one of claims 1 to 4, wherein an anti-stacking mechanism is disposed between the fixed belt holder and the movable belt holder, and the anti-stacking mechanism includes A second horizontal guide roller below the conveyor belt, the second horizontal guide roller being fixed at both ends of the frame.
A belt drawing mechanism according to claim 4, wherein said fixed end of said second hydraulic cylinder is provided with a return elastic member that urges said power output end, and said second hydraulic cylinder is reset A return resilient member urges the pressure plate to compress the conveyor belt.
A conveyor belt drawing mechanism according to claim 7, wherein said pressure plate includes upper and lower pressure plates respectively above and below said conveyor belt, said upper pressure plate being coupled to power of said second hydraulic cylinder The output end, the lower pressing plate is fixed to the bottom of the bracket; and one side of the upper pressing plate and the lower pressing plate contacting the conveying belt is provided with a friction protection layer.
A conveyor belt changing device for a belt conveyor, comprising the belt pulling mechanism according to any one of claims 1 to 8, a tape feeding mechanism for providing a new conveyor belt, and a rewinding mechanism for rewinding the old conveyor belt; One end of the old conveyor belt is connected to a new conveyor belt leading from the tape feeding mechanism, and the other end of the old conveyor belt is fixed to the rewinding mechanism through the belt drawing mechanism.