CN106429177B - Belt changing device of belt conveyor - Google Patents

Belt changing device of belt conveyor Download PDF

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Publication number
CN106429177B
CN106429177B CN201611022554.7A CN201611022554A CN106429177B CN 106429177 B CN106429177 B CN 106429177B CN 201611022554 A CN201611022554 A CN 201611022554A CN 106429177 B CN106429177 B CN 106429177B
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China
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belt
roller
changing
conveying
conveyor
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CN106429177A (en
Inventor
吴娟
寇子明
高贵军
崔功军
赵亮吉
薛佳保
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Taiyuan University of Technology
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Taiyuan University of Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G15/00Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration

Abstract

The invention discloses a belt changing device of a belt conveyor, which comprises a belt unloading mechanism for removing a first conveying belt and a belt supplying mechanism for providing a second conveying belt, wherein the tail end of the first conveying belt is connected with the starting end of the second conveying belt; the belt unloading mechanism is provided with a first driving part for continuously pulling the first conveying belt to move; the belt supply mechanism is provided with a belt supply roller which adjusts the rotating speed according to the moving speed of the first conveying belt.

Description

Belt changing device of belt conveyor
Technical Field
The invention relates to the technical field of maintenance of belt conveyors, in particular to a belt replacing device of a belt conveyor.
Background
The belt conveyor is an important device in coal production, has irreplaceable effect in the coal production, and is an extremely important ring for realizing the coal from a working face to the ground. The belt is a carrier for bearing and transporting coal, but friction between a belt surface and materials exists in the long-time use process of the belt, the belt surface of the belt is scratched due to the friction between the belt and a roller, even a steel wire rope is rusted and broken, and potential safety hazards are buried in the operation of the belt. Therefore, in order to ensure the safe and stable operation of the rubber belt, the rubber belt must be replaced periodically, the length, volume and weight of the rubber belt are increased along with the increasing of the coal transportation amount, and the surrounding conditions of the belt conveyor are complicated, so that the work of replacing the rubber belt is complicated and difficult. Especially for a large-inclination long-distance conveyor, the belt changing difficulty is higher, and accidents such as belt slipping, belt breakage and the like are easy to happen; and because the underground operation is forced to stop production during the belt changing period, the production and the economic benefit of a coal mine are directly influenced by the belt changing time, the belt changing time is shortened, and the belt changing time is of great importance for improving the economic benefit of the coal industry.
The invention discloses a replacing device and a replacing method for a belt conveyor belt, which are CN103009037, and the invention adopts an oil cylinder to clamp the belt, utilizes a double-layer clamping oil cylinder piston rod to stretch and pull a step pull belt, realizes the pulling of the belt to complete the belt replacement, but the device can not ensure that the belt is not off tracking in the belt replacing process, namely, no off tracking prevention device is arranged to adjust the trend of the belt; and the belt pulling and conveying of the device are carried out in two steps, the belt changing operation cannot achieve a continuous effect, and the belt changing efficiency is not high.
The invention discloses a rubber belt winding and unwinding device for a belt conveyor, which is disclosed as CN104003230A, and comprises two clamping oil cylinders, a caterpillar belt conveying chassis and an anti-deviation device, wherein after the two clamping oil cylinders drive the caterpillar belt chassis to clamp a rubber belt, a high-torque hydraulic motor starts to work to drive a caterpillar belt to rotate on the chassis, the strong clamping force of the oil cylinders is converted into the friction force between the caterpillar belt and the rubber belt, and then the hydraulic motor is converted into the traction force of a pull belt to achieve the purpose of belt changing. This patent the tape changing device can realize changing the area in succession to realized the integration of changing a roll, but the device does not consider comparatively steady, safe design in the aspect of transferring of new conveyer belt, can lead to new conveyer belt to put the area and the unmatched condition of old conveyer belt receipts tape speed to appear, can lead to new conveyer belt to lay the quality poor or change the area time increase.
Therefore, the problems of low belt changing efficiency and the mismatch between the belt releasing speed of the new conveying belt and the belt retracting speed of the old conveying belt are to be solved urgently.
Disclosure of Invention
In view of the above, it is desirable to provide a belt changing device for a belt conveyor, which has high belt changing efficiency and matches the speed of the new conveying belt to the speed of the old conveying belt to take up the new conveying belt.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the embodiment of the invention provides a belt changing device of a belt conveyor, which comprises a belt unloading mechanism for removing a first conveying belt and a belt supplying mechanism for providing a second conveying belt, wherein the tail end of the first conveying belt is connected with the starting end of the second conveying belt; the belt unloading mechanism is provided with a first driving part for continuously pulling the first conveying belt to move; the belt supply mechanism is provided with a belt supply roller which adjusts the rotating speed according to the moving speed of the first conveying belt.
Preferably, the belt unloading mechanism is provided with an upper belt-track disc and a lower belt-track disc which clamp the first conveying belt; the upper crawler belt disc and the lower crawler belt disc are respectively provided with at least one first driving part for driving the crawler belt to rotate.
Preferably, the belt unloading mechanism is provided with a pressure monitoring component for controlling the pressure value of the upper crawler belt disc and the lower crawler belt disc clamping the first conveying belt.
Preferably, the belt unloading mechanism is provided with a clamping hydraulic cylinder which drives the upper crawler belt disc and the lower crawler belt disc to perform clamping or loosening actions, a cylinder body of the clamping hydraulic cylinder is fixed with the lower crawler belt disc, and a piston of the clamping hydraulic cylinder is fixed with the upper crawler belt disc; horizontal support columns are fixed on two sides of the upper crawler belt disc and two sides of the lower crawler belt disc respectively, the support columns penetrate through the rack of the belt changing device, rectangular through holes matched with the support columns are formed in the rack of the belt changing device, and the support columns move up and down in the rectangular through holes.
Preferably, the tape supplying roller comprises a roller shaft and a roller, the roller shaft is fixed on the frame of the tape changer, and the roller rotates based on the roller shaft; and a second driving part which drives the roller to rotate and can adjust the rotating speed is arranged in the roller.
Preferably, the tape supply rollers are provided in three, and the position of at least one of the tape supply rollers is adjustable.
Preferably, the belt supply mechanism is further provided with a deviation preventing component, and the deviation preventing component is arranged before the second conveying belt enters the belt supply roller; the deviation-preventing component comprises a guide roller and baffle plates at two ends of the guide roller.
Preferably, the belt changing device is further provided with a braking mechanism, and the braking mechanism is arranged at one end of the belt changing device and used for braking the input of the first conveying belt and/or the output of the second conveying belt.
Preferably, the tape changing device is also provided with a tape retracting mechanism; the belt winding mechanism comprises an active roller and a passive roller which are matched up and down, and the first conveying belt penetrates between the active roller and the passive roller and then is wound on the passive roller; the shaft of the driving roller is fixed on the rack of the belt changing device, and the shaft of the driven roller freely moves in the up-down direction.
Preferably, the tape changing device is further provided with a tape cutting mechanism, the tape cutting mechanism comprises a cutting machine, and a guide rail for the cutting machine to move is arranged below the cutting machine.
The belt changing device of the belt conveyor provided by the embodiment of the invention comprises a belt unloading mechanism for removing a first conveying belt and a belt supplying mechanism for providing a second conveying belt, wherein the tail end of the first conveying belt is connected with the starting end of the second conveying belt; the belt unloading mechanism is provided with a first driving part for continuously pulling the first conveying belt to move; the belt supply mechanism is provided with a belt supply roller for adjusting the rotating speed according to the moving speed of the first conveying belt; therefore, the belt replacing device of the belt conveyor in the embodiment of the invention continuously pulls the first conveying belt through the belt unloading mechanism, so that the belt replacing efficiency is ensured, and the belt releasing speed of the new conveying belt is matched with the belt collecting speed of the old conveying belt through the cooperation of the belt supplying mechanism consisting of the belt supplying rollers with adjustable rotating speed; the belt changing efficiency is high, and the laying quality of the new conveying belt is good.
Drawings
FIG. 1 is a schematic view of a belt changer of a belt conveyor according to an embodiment of the present invention;
FIG. 2 is a schematic front view of a belt changer of a belt conveyor according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of a belt changer of the belt conveyor according to an embodiment of the present invention;
FIG. 4 is a schematic view of a distance saving lever in a belt changer of a belt conveyor according to an embodiment of the present invention;
FIG. 5 is a schematic view showing the internal structure of a belt supplying roller in a belt changer of a belt conveyor according to an embodiment of the present invention;
fig. 6 is a schematic view of a second brake mechanism in the belt changer of the belt conveyor according to the embodiment of the present invention.
Detailed Description
The embodiment of the invention provides a belt changing device of a belt conveyor, which comprises a belt unloading mechanism for removing a first conveying belt and a belt supplying mechanism for providing a second conveying belt, wherein the tail end of the first conveying belt is connected with the starting end of the second conveying belt; the belt unloading mechanism is provided with a first driving part for continuously pulling the first conveying belt to move; the belt supply mechanism is provided with a belt supply roller for adjusting the rotating speed according to the moving speed of the first conveying belt;
here, the first conveyor belt is an old belt that needs to be replaced, and the second conveyor belt is a new belt that replaces the old belt.
For better understanding of the belt changing device, before the belt changing device is introduced, a belt changing process of the whole belt conveyor is introduced, and the belt changing process comprises the following steps:
1) stopping the machine, stopping the operation of the belt conveyor, and separating the power driving device from the conveying belt to enable the conveying belt to be in a free state;
2) the fixed belt replacing device is fixed below a machine head at the upper part of the conveyor well if the fixed belt replacing device is an inclined well conveyor, and can be arranged at any position below the conveyor, preferably two ends of the conveyor if the fixed belt replacing device is other conveyors;
3) connecting, namely cutting off a first conveying belt below a belt conveyor corresponding to the belt changing device, connecting one end of the first conveying belt to a belt unloading mechanism of the belt changing device, and connecting the other end of the first conveying belt to a belt supplying mechanism of the belt changing device and connecting the other end of the first conveying belt to a second conveying belt; when in connection, a special connecting belt is fixed at the head parts of the two sections of the conveying belts at the cut part, because the length of the conveying belts is not enough to be connected to the belt unloading mechanism and the belt supplying mechanism of the belt changing device at the same time after the cutting;
4) the tape changing step comprises the steps of starting a tape unloading mechanism and a tape supplying mechanism of the tape changing device, starting tape changing, wherein the speed of the tape supplying mechanism can be adjusted according to the speed of the tape unloading mechanism;
the tape change in the step 4 can have two working modes; one mode is an automatic mode, namely, the belt is automatically changed after the belt is started until the belt is changed or an operator manually stops the belt; the other mode is a jog mode, namely the jog mode is automatically stopped after the jog mode is started and works for a preset time, and the jog mode is suitable for debugging or fault finding if the jog mode works for 1 minute.
The belt unloading mechanism is provided with an upper belt-track disc and a lower belt-track disc which clamp the first conveying belt; the upper crawler belt disc and the lower crawler belt disc are respectively provided with at least one first driving part for driving the crawler belt to rotate;
in order to control the pressure value of the upper crawler belt disc and the lower crawler belt disc clamping the first conveying belt and prevent the sliding caused by insufficient pressure or the load of the driving part from being increased due to overlarge pressure, the belt unloading mechanism is provided with a pressure monitoring part for controlling the pressure value of the upper crawler belt disc and the lower crawler belt disc clamping the first conveying belt;
specifically, the pressure monitoring component can be a pressure sensor, can accurately measure the pressure applied to the conveying belt by the upper crawler belt disc and the lower crawler belt disc, and feeds the pressure back to the control system, and the control system adjusts the pressure applied by the upper crawler belt disc and the lower crawler belt disc; the control system can be a single chip microcomputer or a Programmable Logic Controller (PLC);
in the embodiment of the invention, the belt unloading mechanism is provided with a clamping hydraulic cylinder which drives the upper crawler belt disc and the lower crawler belt disc to move up and down, a cylinder body of the clamping hydraulic cylinder is fixed with the lower crawler belt disc, and a piston of the clamping hydraulic cylinder is fixed with the upper crawler belt disc;
in this way, the control system can adjust the pressure in the hydraulic pipeline where the clamping hydraulic cylinder is located to adjust the pressure applied by the upper crawler belt disc and the lower crawler belt disc;
specifically, the control system may adjust the pressure of the hydraulic pipeline by providing a pressure regulating circuit in the hydraulic pipeline, such as a hydraulic control valve including a throttle valve and an overflow valve, which is not described in detail.
Horizontal support columns are fixed on two sides of the upper crawler belt disc and the lower crawler belt disc respectively, the support columns penetrate through a rack of the belt changing device, rectangular through holes matched with the support columns are formed in the rack of the belt changing device, and the support columns can move up and down in the rectangular through holes;
in this way, the upper crawler belt disc and the lower crawler belt disc can clamp or release the first conveying belt under the driving of the clamping hydraulic cylinder;
the cross section of the supporting column can be circular or rectangular, and the supporting column can move up and down in the rectangular through hole, namely, the clamping or loosening action is performed;
furthermore, in order to move smoothly, sliding rails can be arranged on two side walls of the rectangular through hole, and sliding blocks matched with the sliding rails are arranged on two side surfaces of the supporting column.
The first driving component is used for driving the track to rotate, namely driving the first conveying belt to move;
in order to make the first conveying belt move more smoothly, the two ends of the upper crawler belt disc and the lower crawler belt disc are respectively provided with a first driving component, so that the upper crawler belt disc and the lower crawler belt disc are respectively provided with two first driving components, the total number of the four first driving components is four, the upper crawler belt or the lower crawler belt is driven to rotate together, and the steering direction of the upper crawler belt is opposite to that of the lower crawler belt;
specifically, the first driving component can be a hydraulic motor, and the hydraulic motor has the advantages of small volume, light weight, simple structure, good manufacturability, insensitivity to oil pollution, impact resistance, small inertia and the like;
furthermore, the rotating speed of the hydraulic motor can be adjusted, namely the rotating speed is adjusted by adjusting the oil supply amount of the hydraulic motor, the oil supply amount can be adjusted by a variable oil pump, or the flow entering the hydraulic motor can be controlled by a flow valve under the condition that the specification of the oil pump is fixed;
specifically, the hydraulic control components such as the variable oil pump and the flow valve can be adjusted through a control system;
in the working sequence, after the upper and lower crawler belts clamp the first conveying belt, the first driving component can be started to pull the first conveying belt to move.
The belt supply roller comprises a roller shaft and a roller, the roller shaft is fixed on a rack of the belt changing device, and the roller can rotate based on the roller shaft; a second driving part for driving the roller to rotate is arranged in the roller, and the rotating speed of the second driving part can be adjusted;
in particular, the second drive component may be a hydraulic motor; the second drive member may also adjust the rotational speed in the same way as the first drive member;
in order to increase the friction between the surface of the roller and the second conveying belt, three belt supply rollers are arranged, and the position of at least one belt supply roller can be adjusted; this can increase the contact area of the second conveyor belt with the roller surface, increasing the friction.
Furthermore, the belt supply mechanism is also provided with an anti-deviation component which is arranged before the second conveying belt enters the belt supply roller; the deviation preventing component comprises a guide roller and baffle plates at two ends of the guide roller;
the guide rollers comprise an upper guide roller and a lower guide roller, the second conveying belt penetrates through the space between the upper guide roller and the lower guide roller, and two ends of the upper guide roller or the lower guide roller are provided with baffles;
in order to avoid the wearing and tearing that the friction between deflector roll and baffle and the second conveyer belt leads to the second conveyer belt, a plurality of annular grooves have been seted up at the deflector roll both ends down, the baffle medial surface is the arc, like this, has reduced the area of contact of deflector roll, baffle and second conveyer belt, reduces the wearing and tearing of second conveyer belt.
Furthermore, the belt changing device is also provided with a braking mechanism, and the braking mechanism is arranged at one end of the belt changing device and is used for braking the input of the first conveying belt and/or the output of the second conveying belt when the belt changing device is stopped;
specifically, the power device of the braking mechanism may be a hydraulic cylinder, a braking hydraulic cylinder is arranged above the input position of the first conveying belt and at the output position of the second conveying belt, and a piston of the hydraulic cylinder is connected with a braking plate.
Furthermore, the tape changing device is also provided with a tape collecting mechanism; the belt winding mechanism comprises an active roller and a passive roller which are matched up and down, and the first conveying belt penetrates between the active roller and the passive roller and then is wound on the passive roller; the shaft of the driving roller is fixed on a rack of the tape changer, and the shaft of the driven roller can freely move in the vertical direction;
specifically, the belt winding mechanism drives the first conveying belt to continuously wind around the driven roller through friction force among the driving roller, the driven roller and the first conveying belt;
the shaft of the driven roller can freely move in the vertical direction, so that the driven roller can be automatically lifted under the condition that the diameter of the driven roller is increased after the first conveyor belt is wound, and a gap between the driving roller and the driven roller is ensured;
specifically, the shaft of the driven roller can freely move in the vertical direction, and the shaft of the driven roller can be erected in a rectangular hole, wherein the height of the rectangular hole is far greater than the width of the rectangular hole; the shaft of the driven roller may also be hinged to the frame of the belt changer through a rocker arm, which is not described in detail.
Furthermore, the belt changing device is also provided with a belt cutting mechanism, the belt cutting mechanism comprises a cutting machine, and a guide rail for the cutting machine to move is arranged below the cutting machine;
the belt cutting mechanism is used for cutting off the first conveying belt when the driven roller needs to be replaced after the first conveying belt wound on the driven roller is fully wound;
the conveying belt has the characteristics of high strength and good toughness, is generally formed by compounding high-strength rubber, fibers, canvas and other materials, and is also internally embedded with steel fibers or steel wire ropes and the like, so the belt cutting mechanism in the embodiment of the invention is provided with the cutting machine, and the working principle of the belt cutting mechanism is that the grinding wheel saw blade rotating at high speed gradually cuts from the side surface vertical to the first conveying belt; in order to ensure the stability of feed and the cutting speed, a guide rail for moving the cutting machine is arranged below the cutting machine;
the belt cutting mechanism can be operated manually or automatically, and is not detailed.
So that the manner in which the features and advantages of the embodiments of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings.
FIG. 1 is a schematic view of a belt changer of a belt conveyor according to an embodiment of the present invention; FIG. 2 is a schematic front view of a belt changer of a belt conveyor according to an embodiment of the present invention; FIG. 3 is a schematic perspective view of a belt changer of the belt conveyor according to an embodiment of the present invention; as shown in fig. 1 to 3, a belt changing device of a belt conveyor includes a belt unloading mechanism, a belt supplying mechanism, a braking mechanism, a belt winding mechanism, and a belt cutting mechanism.
The belt unloading mechanism comprises an upper crawler belt disc 4 and a lower crawler belt disc 26, and the upper crawler belt disc 4 and the lower crawler belt disc 26 are used for clamping the first conveying belt 7 and pulling the first conveying belt 7 to move;
specifically, the belt unloading mechanism is provided with a clamping hydraulic cylinder 3, a cylinder body of the clamping hydraulic cylinder 3 is fixed with the lower crawler belt disc 26, and a piston of the clamping hydraulic cylinder 3 is fixed with the upper crawler belt disc 4; horizontal support columns are fixed on two sides of the upper crawler belt disc 4 and the lower crawler belt disc 26, the support columns penetrate through a rack of the belt changing device, rectangular through holes matched with the support columns are formed in the rack of the belt changing device, and the support columns can move up and down in the rectangular through holes;
in the embodiment of the invention, in order to simplify the structure, the fixing positions of the clamping hydraulic cylinder 3 and the upper crawler belt disc 4 and the lower crawler belt disc 26 are arranged at two ends of the supporting column of the upper crawler belt disc 4 and the lower crawler belt disc 26; in addition, in order to facilitate fixing, a clamping hydraulic cylinder lug seat 2 is also arranged on the supporting column;
when the clamping hydraulic cylinder 3 acts, the upper crawler belt disc 4 and the lower crawler belt disc 26 move up and down to clamp the first conveying belt 7, namely, the supporting columns move up and down in the rectangular through holes;
specifically, the cross-sectional shape of the support column is rectangular.
In order to control the pressure value of the upper crawler belt 4 and the lower crawler belt 26 on the first conveyor belt 7, and prevent the driving part from being overloaded due to slipping or excessive pressure caused by insufficient pressure, the belt unloading mechanism is provided with a pressure monitoring part (not shown in the figure) for controlling the pressure value of the upper crawler belt 4 and the lower crawler belt 26 clamping the first conveyor belt 7;
in particular, the pressure monitoring component may be a pressure sensor, which can accurately measure the pressure applied by the upper crawler belt 4 and the lower crawler belt 26 to the conveyor belt, and feed back the measured pressure to a control system (not shown in the figure), and the control system adjusts the pressure applied by the upper crawler belt 4 and the lower crawler belt 26; the control system is a Programmable Logic Controller (PLC);
in this way, the control system can regulate the pressure in the hydraulic conduit in which the clamping cylinder 3 is located to adjust the pressure exerted by the upper and lower crawler discs 4, 26;
specifically, the control system adjusts the pressure of the hydraulic pipeline by arranging the overflow valve.
The belt unloading mechanism is also provided with first driving components (not shown in the figure) for driving the upper track and the lower track to rotate, and the two ends of the upper track disc 4 and the two ends of the lower track disc 26 are respectively provided with one first driving component, so that the upper track disc 4 and the lower track disc 26 are respectively provided with two first driving components, and the total number of the four first driving components is four, so that the upper track and the lower track are driven to rotate together;
in particular, the first drive component is a hydraulic motor; the rotating speed of the hydraulic motor can be adjusted, namely the rotating speed of the hydraulic motor is adjusted by adjusting the oil supply amount of the hydraulic motor;
more specifically, adjusting the oil supply amount of the hydraulic motor may also be adjusted by the control system.
Thus, after the upper and lower crawler disks 4 and 26 clamp the first conveyor belt 7, the first driving member may be activated to pull the first conveyor belt 7 to move.
The belt supply mechanism comprises three belt supply rollers for outputting the second conveying belt 9, the number of the belt supply rollers is 12-1, 12-2 and 12-3, and the position of the belt supply roller 12-2 can be adjusted, so that the contact area between the second conveying belt 9 and the surface of the roller can be increased, and the friction force is increased;
specifically, the tape supply roller 12-2 is provided with an adjusting hydraulic cylinder 12-4 for adjusting the position of the tape supply roller, and the adjusting hydraulic cylinder 12-4 drives the tape supply roller 12-2 to rotate through a distance-saving lever to adjust the position of the tape supply roller; as shown in fig. 4, the main body of the distance-saving lever is a lever shaft 12-5 which is mounted on the frame of the tape changer and can only rotate, two ends of the lever shaft are provided with power arms 12-6 perpendicular to the lever shaft, the middle of the lever shaft is provided with a resistance arm 12-7, the length of the power arm 12-6 is shorter than that of the resistance arm 12-7, and the outer end of the power arm is applied with a pushing force or a pulling force which is not parallel to the power arm, so that the lever shaft 12-5 can be driven to rotate; because the length of the power arm 12-6 is shorter than that of the resistance arm 12-7, force is applied to the power arm, the effect of saving more distance can be obtained, and the defect of more labor can be overcome by presetting the proper cylinder diameter of the hydraulic cylinder 12-4;
in the embodiment of the invention, the belt supply roller 12-2 can rotate for a larger distance by adjusting the piston of the hydraulic cylinder 12-4 to extend or retract for a shorter distance, so that the purposes of increasing the contact area between the second conveying belt 9 and the roller surface and increasing the friction force are achieved, and the adjustment is more convenient;
specifically, as shown in fig. 1, the supply rollers 12-2 have rotated to the lower right from between the supply rollers 12-1, 12-3, greatly increasing the contact area of the second conveyor belt 9 with the roller surfaces.
The belt supply roller comprises a roller shaft and a roller, the roller shaft is fixed on a rack of the belt changing device, and the roller can rotate based on the roller shaft; a second driving part 34 for driving the roller to rotate is arranged in the roller, and the rotating speed of the second driving part 34 can be adjusted;
in particular, the second drive member 34 is a hydraulic motor; the control system may also adjust the rotational speed of the second drive member 34 by adjusting the amount of oil supplied, as with the first drive member;
for a further understanding of the driving principle of the second driving member 34, reference will be made to fig. 5:
the second driving part 34 is fixed on the roller shaft and drives the roller to rotate through a speed reducing mechanism;
because the rotating speed of the hydraulic motor is generally higher, the speed reducing mechanism is in three-stage speed reducing transmission, wherein one-stage speed reducing transmission is a planetary gear reducer, so that the speed reducing ratio is higher; the secondary speed reduction transmission is external cylindrical gear transmission; the three-stage reduction transmission is the matching of the outer cylindrical gear and the inner circular gear ring, and a larger reduction ratio can be obtained;
specifically, the planetary gear reducer includes planetary gears 33 connected to the output shaft of the second drive member 34 and a carrier 31 connected to a two-stage reduction gear; the secondary reduction transmission comprises a secondary driving gear 32 and a secondary driven gear 35; the three-stage reduction gear transmission comprises a three-stage driving gear 29 and a three-stage driven gear 30, and the three-stage driven gear 30 is an internal gear ring; the third driven gear 30 is fixed to the drum such that the second driving member 34 is operated to rotate the drum.
Further, the belt supply mechanism is also provided with a deviation preventing component 20, and the deviation preventing component 20 is arranged before the second conveying belt 9 enters the belt supply roller; the deviation-preventing part 20 comprises a guide roller and baffle plates at two ends of the guide roller;
specifically, the guide rollers include an upper guide roller 201 and a lower guide roller 202, the second conveyor belt 9 passes through between the upper guide roller 201 and the lower guide roller 202, and the upper guide roller 201 is provided with a baffle 203;
in order to avoid the abrasion of the second conveying belt 9 caused by the friction between the guide roller and the baffle 203 and the second conveying belt 9, a plurality of annular grooves are formed in the two ends of the lower guide roller 202, and the inner side surface of the baffle 203 is arc-shaped, so that the contact area of the guide roller, the baffle 203 and the second conveying belt 9 is reduced, and the abrasion of the second conveying belt 9 is reduced.
The braking mechanism is arranged at one end of the belt changing device and is used for braking the input of the first conveying belt 7 and the output of the second conveying belt 9, and the input of the first conveying belt 7 or the output of the second conveying belt 9 can also be independently braked;
the brake mechanism comprises a first brake mechanism using hydraulic braking and a second brake mechanism using manual braking;
specifically, the first brake mechanism is provided with a brake hydraulic cylinder, the brake hydraulic cylinder comprises an upper brake hydraulic cylinder 6 and a lower brake hydraulic cylinder 11, and the upper brake hydraulic cylinder 6 and the lower brake hydraulic cylinder 11 are respectively arranged above the input position of the first conveyor belt 7 and below the output position of the second conveyor belt 9;
more specifically, a piston of the brake hydraulic cylinder is connected with a first brake plate matched with the first conveyor belt 7 or the second conveyor belt 9, and a middle brake box 8 matched with the first brake plate is further arranged on the rack of the belt changing device; the top end of the middle brake box 8 is arranged below the first conveying belt 7 and corresponds to the upper brake hydraulic cylinder 6; the bottom end of the middle brake box 8 is arranged above the second conveying belt 9 and corresponds to the lower brake hydraulic cylinder 11;
in order to install the upper brake hydraulic cylinder 6 and the lower brake hydraulic cylinder 11, an upper brake box 5 and a lower brake box 10 are arranged on a rack of the belt changing device, and the upper brake hydraulic cylinder 6 and the lower brake hydraulic cylinder 11 are respectively fixed in the upper brake box 5 and the lower brake box 10; the upper brake box 5 and the lower brake box 10 are respectively arranged above and below the middle brake box 8;
the second detent mechanism is shown in fig. 3 and 6, with fig. 3 showing the top of the second detent mechanism, and fig. 6 being a side view of the second detent mechanism; the second brake mechanism is provided with three crank link mechanisms above and below the middle brake box 8, namely corresponding to the input position of the first conveyor belt 7 and the output position of the second conveyor belt 9; the crank connecting rod mechanism comprises a crank 28-1 and a connecting rod 28-2; the crank 28-1 is hinged on the upper brake box 5 or the lower brake box 10 (the upper brake box and the lower brake box are not shown in fig. 6), and the connecting rod 28-2 is hinged on the second brake plate 28-3; the two second brake plates 28-3 comprise the middle brake box 8 and the first conveyor belt 7 and the second conveyor belt 9, namely the first conveyor belt 7 or the second conveyor belt 9 is arranged between the second brake plates 28-3 and the middle brake box 8;
the second brake mechanism is also provided with a crank driving shaft 28-4, the crank driving shaft 28-4 connects the three crank connecting rod mechanisms together, and when the crank driving shaft is rotated, cranks 28-1 of the three crank connecting rod mechanisms rotate synchronously;
when braking is needed, the crank driving shaft 28-4 is rotated to drive the crank 28-1 to rotate, and then the connecting rod 28-2 is driven to move downwards or upwards, so that the second braking plate 28-3 is driven to move towards the first conveying belt 7 or the second conveying belt 9, and braking is completed;
the specific braking process is illustrated by taking a crank-link mechanism at the upper part of fig. 6 as an example, the crank 28-1 is rotated clockwise, the crank 28-1 is hinged to the link 28-2, the upper end of the link 28-2 moves leftwards and downwards, and the lower end of the link 28-2 is hinged to the second braking plate 28-3 and can only move downwards to drive the second braking plate 28-3 to move downwards, so that braking is completed;
in practice, the crank drive shaft 28-4 is rotated by a longer operating handle (not shown), which similarly lengthens the power arm of the lever, thereby achieving the purpose of saving more labor.
Furthermore, the belt unloading mechanism is also provided with a belt winding mechanism; the belt winding mechanism comprises an active roller 22 and a passive roller 23 which are matched up and down, and the first conveying belt 7 passes through the space between the active roller 22 and the passive roller 23 and then is wound on the passive roller 23; the shaft of the driving roller 22 is fixed on the frame of the belt changing device, and the shaft of the driven roller 23 can move freely in the vertical direction;
specifically, the belt winding mechanism drives the first conveyor belt 7 to be continuously wound on the driven roller 23 through the friction force among the driving roller 22, the driven roller 23 and the first conveyor belt 7;
the shaft of the driven roller 23 can move freely in the up-and-down direction, so that the driven roller 23 can be automatically lifted under the condition that the diameter of the first conveyor belt 7 is increased after being wound, and the gap between the driving roller 22 and the driven roller 23 is ensured;
specifically, the shaft of the driving roller 22 is fixed on the frame of the belt changer through a roller bearing seat 21; the shaft of the driven roller 23 is fixed to a rocker arm 24, and the rocker arm 24 is hinged to the frame of the belt changer, so that when the diameter of the driven roller 23 increases, the rocker arm 24 rotates upward based on the frame of the belt changer, that is, the driven roller 23 is driven to ascend.
The belt cutting mechanism comprises a cutter 25, and is used for cutting off the first conveying belt 7 when the driven roller 23 needs to be replaced after the first conveying belt 7 wound on the driven roller 23 is fully wound;
specifically, the blade cut by the cutting machine 25 is a grinding wheel saw blade; a guide rail for moving the cutting machine 25 is arranged below the cutting machine 25, so that the stability of feeding and the cutting speed are ensured;
more specifically, the guide rail is a linear guide rail, the linear guide rail is used in the linear reciprocating motion occasion, can bear certain torque, can realize high-precision linear motion under the condition of high load, and ensures the stability of feed and the cutting speed.
The belt cutting mechanism is manually operated, when the driven roller 23 reaches a preset diameter after winding the first conveying belt 7, the braking mechanism is firstly used for braking, then the operation of the belt unloading mechanism and the belt supplying mechanism is stopped, finally the belt cutting mechanism is operated to cut off the first conveying belt 7, a new driven roller 23 is replaced, then the braking mechanism is released, and the belt unloading mechanism and the belt supplying mechanism are started.
Further, for convenience of manufacture, the frame of the tape changer is divided into an upper frame 1, a middle frame 27 and a lower frame;
furthermore, an adjustable support seat is further arranged below the lower frame, and the adjustable support seat comprises a long support leg 17, a long support leg hydraulic cylinder 18, a short support leg 14, a short support leg hydraulic cylinder 15, a ground support block 13, a support leg connecting block 16 and a hydraulic cylinder connecting block 19.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.

Claims (6)

1. A belt changing device of a belt conveyor is characterized by comprising a belt unloading mechanism for removing a first conveying belt and a belt supplying mechanism for supplying a second conveying belt, wherein the tail end of the first conveying belt is connected with the starting end of the second conveying belt; the belt unloading mechanism is provided with a first driving part for continuously pulling the first conveying belt to move; the belt supply mechanism is provided with a belt supply roller for adjusting the rotating speed according to the moving speed of the first conveying belt; the belt supply roller comprises a roller shaft and a roller, the roller shaft is fixed on a rack of the belt changing device, and the roller rotates based on the roller shaft; the belt supply rollers are provided with three second driving parts which can drive the rollers to rotate and can adjust the rotating speed, the position of at least one of the belt supply rollers can be adjusted, and the belt supply rollers are provided with adjusting hydraulic cylinders for adjusting the positions of the belt supply rollers;
the belt changing device is also provided with a braking mechanism, and the braking mechanism is arranged at one end of the belt changing device and is used for braking the input of the first conveying belt and/or the output of the second conveying belt;
the belt supply mechanism is also provided with an anti-deviation component which is arranged before the second conveying belt enters the belt supply roller; the deviation preventing component comprises a guide roller and baffles at two ends of the guide roller, the guide roller comprises an upper guide roller and a lower guide roller, the second conveying belt penetrates through the space between the upper guide roller and the lower guide roller, and the baffles are arranged at two ends of the upper guide roller or the lower guide roller; a plurality of annular grooves are formed in the two ends of the lower guide roller, and the inner side face of the baffle is arc-shaped.
2. The belt changer of a belt conveyor according to claim 1, wherein the unloading mechanism is provided with an upper crawler belt reel and a lower crawler belt reel that clamp the first conveyor belt; the upper crawler belt disc and the lower crawler belt disc are respectively provided with at least one first driving part for driving the crawler belt to rotate.
3. The belt changer of a belt conveyor according to claim 2, wherein the belt unloading mechanism is provided with a pressure monitoring part for controlling a pressure value at which the upper and lower crawler belts clamp the first conveyor belt.
4. The belt changing device of a belt conveyor according to claim 2, wherein the belt unloading mechanism is provided with a clamping hydraulic cylinder for driving the upper track disc and the lower track disc to perform clamping or loosening actions, a cylinder body of the clamping hydraulic cylinder is fixed with the lower track disc, and a piston of the clamping hydraulic cylinder is fixed with the upper track disc; horizontal support columns are fixed on two sides of the upper crawler belt disc and two sides of the lower crawler belt disc respectively, the support columns penetrate through the rack of the belt changing device, rectangular through holes matched with the support columns are formed in the rack of the belt changing device, and the support columns move up and down in the rectangular through holes.
5. A belt changer of a belt conveyor according to claim 1 or 2, characterized in that the belt changer is further provided with a take-up mechanism; the belt winding mechanism comprises an active roller and a passive roller which are matched up and down, and the first conveying belt penetrates between the active roller and the passive roller and then is wound on the passive roller; the shaft of the driving roller is fixed on the rack of the belt changing device, and the shaft of the driven roller freely moves in the up-down direction.
6. The belt changer of a belt conveyor according to claim 1 or 2, wherein the belt changer is further provided with a belt cutting mechanism, the belt cutting mechanism comprises a cutter, and a guide rail for moving the cutter is arranged below the cutter.
CN201611022554.7A 2016-11-15 2016-11-15 Belt changing device of belt conveyor Active CN106429177B (en)

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CN201611022554.7A CN106429177B (en) 2016-11-15 2016-11-15 Belt changing device of belt conveyor
PCT/CN2016/107134 WO2018090390A1 (en) 2016-11-15 2016-11-24 Belt replacement device for belt conveyor
ZA2018/01580A ZA201801580B (en) 2016-11-15 2018-03-07 Belt replacement device for belt conveyor

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ZA201801580B (en) 2019-06-26
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