CN113751362A - Mineral product sorter and transmission band tensioning device - Google Patents
Mineral product sorter and transmission band tensioning device Download PDFInfo
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- CN113751362A CN113751362A CN202111080487.5A CN202111080487A CN113751362A CN 113751362 A CN113751362 A CN 113751362A CN 202111080487 A CN202111080487 A CN 202111080487A CN 113751362 A CN113751362 A CN 113751362A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 59
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- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/02—Measures preceding sorting, e.g. arranging articles in a stream orientating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/363—Sorting apparatus characterised by the means used for distribution by means of air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G23/00—Driving gear for endless conveyors; Belt- or chain-tensioning arrangements
- B65G23/44—Belt or chain tensioning arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Conveyors (AREA)
Abstract
The application provides a mineral products sorter and transmission band overspeed device tensioner. Wherein the mineral product sorter includes: a feed mechanism for feeding ore; a transport mechanism for transporting the ore to a predetermined location after loading the ore from the feed mechanism; the detection mechanism is used for detecting ores at a preset position; the sorting mechanism is used for sorting and picking up the detection result of the ore according to the detection mechanism; the transmission mechanism is provided with a transmission belt tensioning device. The conveyor belt tensioning device comprises: the transmission belt detection device is used for sending a tensioning control signal when the transmission belt and the driving roller are detected to slip; a tension motor for operating upon receipt of a tension control signal; the tensioning motor drives a tensioning assembly that tensions the conveyor belt. Thus, the automatic tensioning of the conveying belt can be realized without stopping the machine, so that the slipping phenomenon is rapidly eliminated, and the accuracy of the mineral product sorting machine for sorting the ores is improved.
Description
Technical Field
The application relates to the technical field of mineral product excavation, in particular to a mineral product sorting machine and a transmission belt tensioning device.
Background
In prior art mineral extraction, a large ore is usually broken into smaller ore pieces by using an extraction tool. Subsequently, the mineral product sorting machine sorts and picks up the mineral.
The mineral product sorting machine may include a feeding mechanism that continuously supplies the ore, a conveying mechanism that conveys the ore to a predetermined position, a detecting mechanism that detects the ore at the predetermined position, and a sorting mechanism that sorts and picks up a detection result of the ore according to the detecting mechanism.
In the process of realizing the prior art, the inventor finds that:
the material mainly leans on the transmission band to transport in the sorter, and long-time work back transmission band is heated and can take place expend with heat and contract with cold's phenomenon. At this time, the total length of the conveyor belt is also increased, the contact area between the conveyor belt and the drum is decreased, the tension is also decreased, and sufficient driving friction is not generated between the conveyor belt and the drum, so that sliding friction occurs, and a slip phenomenon occurs. When the transmission band skids, the material on the transmission band can not break away from the transmission band according to the predetermined speed, and the track of the material also can change. Like this for sorting mechanism can't accurately carry out the material and select separately, thereby has influenced the ore and has selected separately the degree of accuracy.
Therefore, it is desirable to provide a mineral separator that can automatically adjust the tension of the conveyor belt.
Disclosure of Invention
The embodiment of the application provides a mineral products sorter that can automatically regulated transmission band tensile force for solve the technical problem that the mineral products sorter transmission band skidded.
Specifically, a mineral products sorter includes:
a feed mechanism for feeding ore;
the conveying mechanism is used for conveying the ore to a preset position after the ore is loaded from the feeding mechanism;
the detection mechanism is used for detecting ores at a preset position;
the sorting mechanism is used for sorting and picking up the detection result of the ore according to the detection mechanism;
wherein the conveying mechanism comprises a conveying belt;
the driving roller drives the conveying belt to move;
the driven roller is matched with the driving roller to realize circulation of the conveying belt;
and the transmission belt tensioning device is arranged between the driving roller and the driven roller.
Further, the conveyor belt tensioning device comprises:
the transmission belt detection device is used for sending a tensioning control signal when the transmission belt and the driving roller are detected to slip;
the tensioning motor is used for operating when receiving the tensioning control signal;
and the tensioning combination is driven by the tensioning motor to tension the conveying belt.
Further, the tensioning assembly comprises:
a bearing abutting against the conveyor belt;
a roller shaft coaxial with the bearing;
a mounting seat for mounting the roller shaft;
and the driving shaft drives the roller shaft to adjust the position relative to the mounting seat.
Further, a motor shaft of the tension motor is collinear or parallel with the drive shaft.
Further, a motor shaft of the tensioning motor is perpendicular to the driving shaft;
the motor shaft is connected with a first bevel gear;
the driving shaft is connected with a second bevel gear;
the first bevel gear and the second bevel gear are meshed with each other.
Further, the conveyor belt detection device includes:
the roller is abutted to the conveying belt and has the same linear speed as the conveying belt;
an encoder for calculating the linear velocity of the roller;
and the processor is used for judging whether the transmission belt is in a slipping state relative to the driving roller or not and sending a tensioning control signal when the transmission belt is in a slipping state relative to the driving roller.
The embodiment of the application also provides a transmission band tensioning device.
Specifically, a transmission band overspeed device tensioner includes:
the transmission belt detection device is used for sending a tensioning control signal when the transmission belt and the driving roller are detected to slip;
the tensioning motor is used for operating when receiving the tensioning control signal;
and the tensioning combination is driven by the tensioning motor to tension the conveying belt.
Further, the tensioning assembly comprises:
a bearing abutting against the conveyor belt;
a roller shaft coaxial with the bearing;
a mounting seat for mounting the roller shaft;
and the driving shaft drives the roller shaft to adjust the position relative to the mounting seat.
Further, a motor shaft of the tension motor is collinear or parallel with the drive shaft.
Further, a motor shaft of the tensioning motor is perpendicular to the driving shaft;
the motor shaft is connected with a first bevel gear;
the driving shaft is connected with a second bevel gear;
the first bevel gear and the second bevel gear are meshed with each other.
The technical scheme provided by the embodiment of the application at least has the following beneficial effects:
through designing transmission band overspeed device tensioner, the tensile force that can automatically regulated transmission band when the transmission band skids compresses tightly the transmission band, thereby need not to shut down and just can realize the automatic tensioning of transmission band and eliminate the phenomenon of skidding rapidly to mineral products sorter is to the categorised degree of accuracy of ore has been improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural diagram of a mineral product sorter according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a transmission mechanism according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a conveyor belt detection device according to an embodiment of the present application.
Fig. 4 is a schematic structural diagram of a transmission belt tensioning device provided in an embodiment of the present application
100 mineral product sorting machine
11 feeding mechanism
12 conveying mechanism
121 buffer device
122 transfer belt
123 drive roll
124 driven roller
125 conveyor belt tensioning device
1251 conveying belt detection device
12511 roller
12512 encoder
1252 tensioning motor
1253 tensioning combination
12531 bearing
12532 roller axle
12533 mounting seat
12534 drive shaft
13 detection mechanism
14 sorting mechanism
200 conveying belt tensioning device
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1 and 2, the present application discloses a mineral separator 100 comprising:
a feeding mechanism 11 for feeding ore;
a transport mechanism 12 for transporting the ore to a predetermined position after loading the ore from the feed mechanism 11;
a detection mechanism 13 for detecting the ore at a predetermined position;
the sorting mechanism 14 is used for sorting and picking up the detection result of the ore according to the detection mechanism 13;
wherein the transport mechanism 12 comprises a transport belt 122; a driving roller 123 for driving the transmission belt 122 to move; a driven roller 124 which cooperates with the driving roller 123 to circulate the conveying belt 122; a belt tensioner 125 disposed between the driving roller 123 and the driven roller 124.
The mineral separator 100 may have various shapes, and may be represented as a metal mineral separator 100 or a nonmetal mineral separator 100 in a specific scene. A metal mineral separator 100 such as iron ore, copper ore, antimony ore, and various rare earth metal ores, etc. A non-metallic mineral separator 100, such as a diamond ore, coal mine, or the like. The mineral separator 100 functions to separate mineral products rich in elements to be extracted from slag that is poor in the elements to be extracted. The mineral separator 100 screens out minerals rich in the elements to be extracted for further processing to form material data beneficial to human beings.
A feeding mechanism 11 for feeding ore. The ore supplied by the feeding mechanism 11 may be a primary raw material or a raw material that has been previously processed. The primary raw material can be obtained directly from the mine by crushing or cutting. The raw material for the rough treatment may be obtained from the primary raw material by simple particle size screening, for example, by removing ores with too large and too small diameters to obtain ores with a particle size within a certain range. Specifically, the feeding mechanism 11 may be provided with a restriction tank, a funnel tank, a vibrating screen, a classifying screen, and the like to obtain ore materials according with expectations. It is understood that the specific form of the feeding mechanism 11 herein obviously does not constitute a limitation to the specific protection scope of the present application.
And a transport mechanism 12 for transporting the ore to a predetermined position after loading the ore from the feeding mechanism 11. It will be appreciated that the transport mechanism 12 has a location to load ore. The position of the ore in the device can be understood as the initial position of the ore on the transport means 12. The setting of the ore loading position is related to the specific configuration of the conveying mechanism 12 and the feeding mechanism 11.
In one practical embodiment provided herein, the feeding mechanism 11 may be a hopper trough, the transport mechanism 12 transports ore through the conveyor belt 122, and the location where ore is loaded may be a location below the hopper trough that is directly opposite the conveyor belt 122. The predetermined position may be understood as a point along which the path of ore transport must pass or a position along which the path must pass. In addition, the transmission mechanism 12 is further provided with a driving roller 123 for driving the transmission belt 122 to move, and a driven roller 124 for realizing the circulation of the transmission belt 122 in cooperation with the driving roller 123. Thus, the conveying belt 122 is unfolded to move circularly by the driving roller 123 and the driven roller 124. In the design concept of the mineral separator 100, the predetermined position is used for judging the mineral or ore rich in the element to be extracted and the slag or ore poor in the element to be extracted for subsequent processing. It is worth noting that the ore falls into the conveyer belt and can produce certain impact force, and under the effect of impact force, the ore can jump relative to the conveyer belt and can not stably fall on the conveyer belt. The conveyor 12 may therefore also be provided with a buffer device 121 to buffer the run-out of ore on the conveyor. In this way, the ore only moves in the direction of transport, or in other words, the ore remains stationary relative to the transport mechanism 12 at the predetermined location, and there is no movement relative to the ore transport assembly in the direction of gravity. That is, the conveyor belt 122 moves the ore to a predetermined position at a moving speed that is consistent with the speed of the conveyor belt 122 under the action of the driving roller 123 and the driven roller 124. In this way, the ore can move in a relatively simple state at the predetermined position, which is beneficial for the ore sorter 100 to judge the ore.
And the detection mechanism 13 is used for detecting the ore at a preset position. In an implementable embodiment provided by the present application, mineral products rich in the element to be extracted are separated from slag poor in the element to be extracted using optical means. The detection mechanism 13 may use X-rays. The detection mechanism 13 may include an X-ray generation device and an X-ray detection device. The X-ray detection device can determine the enrichment degree of the elements to be extracted through optical phenomena such as transmission, diffraction and spectrum of X-rays, so that the separation of ores is carried out. It will be appreciated that the detection mechanism 13 herein may be loaded with different identification or analysis models depending on the ore type to improve the efficiency and accuracy of ore sorting. For example, loading a recognition model for rare earth elements, loading a recognition model for coal mines or loading recognition models for different particle size ores, loading recognition models for different element enrichment concentrations.
And the sorting mechanism 14 is used for sorting and picking up the detection result of the ore according to the detection mechanism 13. The function of the sorting mechanism 14 is to separate the identified mineral products that are rich in the element to be extracted from the slag that is poor in the element to be extracted. Wherein the sorting mechanism 14 comprises a spraying device having at least two different fluid spraying modes for separating ore into at least three types.
In an implementation provided herein, the sorting mechanism 14 includes an air jet device, a liquid jet device, or a robot. The ore continues to move after the transport mechanism 12 passes the predetermined position and eventually disengages from the transport mechanism 12. The sorting mechanism 14 may sort and pick the identified ore before or during the detachment of the ore from the conveyor mechanism 12. For example, the flight path of ore as it exits from the conveyor 12, and thus the drop point of ore, may be varied by means of a jet device during the exit of ore from the conveyor 12. It can be understood that the gas injection device can realize the separation of ores meeting the conditions only by configuring compressed gas, and the realization cost is low. For another example, the flight path of the ore when the ore is separated from the conveying mechanism 12 can be changed by the liquid spraying device in the separation process of the ore from the conveying mechanism 12, and the falling point of the ore can be further changed. It can be understood that the liquid spraying device needs to be provided with pressure liquid, and although the realization cost is high, the ore can be cleaned, and the convenience is brought to the subsequent treatment of the ore. As another example, a robot may be used to pick up ore that meets the conditions before it is detached from the conveyor mechanism 12. It will be appreciated that whilst it is costly to pick up ore satisfying the conditions using a robot, the use of a refined classification of the ore may facilitate subsequent processing of the ore.
It should be noted that, in practical applications, the conveyor belt 122 may expand with heat and contract with cold after the conveyor mechanism 12 of the mineral separator 100 operates for a long time. At this time, the total length of the conveying belt 122 is also increased, and the contact area between the conveying belt 122 and the drum is reduced, that is, the wrap angle between the conveying belt 122 and the driving roller 123 and the driven roller 124 is reduced. The wrap angle can be understood as the central angle of the arc of contact between the belt 122 and the roller. In this way, insufficient driving friction is generated between the conveying belt 122 and the drive roller 123 and the driven roller 124, and a slip phenomenon occurs. When the conveyor belt 122 slips, the material on the conveyor belt 122 cannot continuously move at a speed consistent with the speed of the conveyor belt 122, so that the material cannot be separated from the conveyor belt 122 at a preset speed, and the motion track of the ore during sorting is changed. Therefore, the conveying mechanism 12 further includes a conveyor belt tensioning device 125 disposed between the drive roller 123 and the driven roller 124 to tension the conveyor belt 122 when the conveyor belt 122 slips, ensuring that ore can be stably conveyed to the sorting mechanism 14 and detached from the conveyor belt 122 in a predetermined trajectory according to the ore classification.
Further, in a preferred embodiment provided herein, the conveyor belt tensioning device 125 comprises: a conveyor belt detecting device 1251 for sending a tension control signal when the conveyor belt 122 and the drive roller 123 are detected to slip; a tensioning motor 1252 for operating upon receiving the tensioning control signal; a tensioning assembly 1253 driven by the tensioning motor 1252 to tension the conveyor belt 122.
It will be appreciated that the conveyor belt 122 is driven by the drive roller 123 to move in a spread motion and, under the action of the driven roller 124, to move in a loop motion. When the conveying belt 122 is in a tensioned state, the driving roller 123 and the driven roller 124 drive the conveying belt 122 to circularly move at a certain rotating speed, and the conveying belt 122 keeps a certain linear speed to move. When the conveyor belt 122 is used for an excessively long time or the operating temperature changes, the length of the conveyor belt 122 increases, the tension state is broken, and the conveyor belt is in a slack state, and thus may slip against the drive roller 123. However, in practical applications, a safety isolation device is usually disposed on the outer ring of the conveying mechanism 12 to prevent workers from accidentally injuring the conveying belt 122 due to ore splashing, so that the workers cannot find the slipping of the conveying belt 122 at the first time. When an abnormal adjustment of the belt tension is found, the ore that has been sorted often needs to be sorted again, which undoubtedly reduces the efficiency of ore sorting. Therefore, it is necessary to provide a belt detecting device 1251 for detecting the moving state of the belt 122 in the belt tensioner 125.
When the state of the conveying belt 122 is detected to be abnormal, the conveying belt detecting device 1251 immediately sends out an abnormal signal, so that the tensioning adjustment of the conveying belt 122 can be immediately performed. That is, when the conveyance belt detecting device 1251 detects the occurrence of a slip of the conveyance belt 122 with respect to the drive roller 123, the tension control signal is immediately issued. The tensioning control signal can be sent to the equipment maintenance end for exception warning. When the worker finds the abnormal warning information, the operation of the mineral product sorter 100 can be suspended, and the tensioning adjustment of the conveyor belt 122 is performed. Thus, although the worker can timely know that the transmission mechanism 12 is abnormally transmitted, the tension of the transmission belt 122 is manually adjusted, which undoubtedly increases the manpower input and takes a long time. Thus, the tension adjustment signal may also be sent to the automatic adjustment mechanism for the tension of the conveyor belt 122.
Specifically, when the tension control signal is acquired by the automatic tension adjusting mechanism of the conveyor belt 122, the tension of the conveyor belt 122 can be adjusted. The conveyor belt 122 is tension-adjusted, that is, the conveyor belt 122 in a slack state after the length is increased is stretched to increase the wrap angle between the conveyor belt 122 and the drive roller 123 and the driven roller 124, so that the conveyor belt 122 is restored to the original tension state between the ore conveying side and the drive roller 123 and the driven roller 124. The wrap angle between the conveyor belt 122 and the drive roller 123 and the driven roller 124 is increased, and mainly, a tension adjusting mechanism is provided on the side away from the ore conveying side, and the conveyor belt 122 is stretched in the direction close to the ore conveying side conveyor belt 122 or away from the ore conveying side conveyor belt 122.
It will be appreciated that the motor is capable of converting electrical energy into mechanical energy and, via the motor shaft, moving the device to which it is connected in a predetermined manner. Therefore, a motor is preferred here as a power source of the tension automatic adjusting mechanism. When receiving a tensioning control signal sent by the conveyor belt detection device 1251, the tensioning motor 1252 may operate according to a preset mode, so as to drive the tensioning assembly 1253 directly contacting the conveyor belt 122 to move until the conveyor belt 122 returns to a tensioned state.
It should be noted that the distance between the driving roller 123 and the driven roller 124 is different in different practical application scenarios. For example, the overall size of the miniaturized mineral separator 100 is small, and the distance between the driving roller 123 and the driven roller 124 is small, so that only one set of the automatic tensioning adjusting mechanism for the conveying belt 122 is needed to complete tensioning adjustment of the conveying belt 122. However, in the large mineral separator 100, the distance between the driving roller 123 and the driven roller 124 may be several tens of meters, and if the conveyor belt 122 is tensioned and adjusted only by one set of the conveyor belt 122 tensioning automatic adjusting mechanism, a large longitudinal space is required, and therefore, a plurality of sets of the conveyor belt 122 tensioning automatic adjusting mechanisms may be provided to tension and adjust the conveyor belt 122 together. Thus, the conveyor belt 122 on the opposite side of the ore conveying side is divided into a plurality of units of conveyor belts 122 having different moving directions by the plural sets of conveyor belt 122 tension automatic adjusting mechanisms. When the automatic tensioning adjusting mechanisms of the multiple groups of conveying belts 122 work, the adjacent conveying belts 122 move reversely between the automatic tensioning adjusting mechanisms, and the unit length of the conveying belt 122 between the two conveying belts is increased. The more sets of automatic adjusting mechanisms are tensioned by the arranged conveying belt 122, the smaller the required longitudinal space is.
Further, in a preferred embodiment provided herein, the tensioning assembly 1253 includes: a bearing 12531 abutting the conveyor belt 122; a roller shaft 12532 coaxial with the bearing 12531; a mount 12533 mounting the roller shaft 12532; a drive shaft 12534 for actuating the roller shaft 12532 to adjust the position relative to the mount 12533.
The bearing 12531 is in direct contact with the transmission belt 122, and when the transmission belt 122 is in a tensioned state, the bearing 12531 is driven to rotate at a certain rotation speed. But when the conveyor belt 122 is in a slack condition, the bearing 12531 loses its power source. That is, the wrap angle between the conveyor belt 122 and the bearing 12531 becomes gradually smaller. Therefore, the position of the bearing 12531 needs to be adjusted until it comes back into contact with the slack belt 122. That is, by adjusting the position of the bearing 12531, the wrap angle between the conveyor belt 122 and the bearing 12531 is increased. At this time, the transmission belt 122 is restored to the tensioned state by the thrust of the bearing 12531. Also, in the process of adjusting the position of the bearing 12531, the length of the conveying belt 122 unit between the bearing 12531 and the adjacent roller is also changed. The adjacent rollers may be understood as the drive roller 123, or the driven roller 124, or the rollers of the adjacent tensioning group 1253 of the transport mechanism 12.
It will be appreciated that the bearings 12531 are stabilized for rotation by the coaxial roller shafts 12532. Also, in the process of adjusting the position of the bearing 12531, the position of the roller shaft 12532 is changed accordingly. The roller axle 12532 can be kept stable without being limited and supported by the mounting seat 12533. The position of the bearing 12531 and the roller shaft 12532 is adjusted by driving the drive shaft 12534. The drive shaft 12534 may be a lead screw or hydraulic rod depending on the requirements of the particular application. However, the hydraulic rod has certain requirements on the actual working environment temperature, the installation direction and the stress angle, and therefore, the lead screw is preferably used as the driving shaft 12534. In order to ensure accurate control of the moving distance of the lead screw, a motor is preferably used as a power source. I.e., the power for the drive shaft 12534, is derived from the tensioning motor 1252. When the tensioning motor 1252 is operated in a predetermined manner, the drive shaft 12534 is caused to rotate at an angular velocity to effect a change in the position of the bearing 12531 and thus the roller shaft 12532 relative to the mounting block 12533.
In order to ensure that the tensioning motor 1252 can stably drive the driving shaft 12534, any one of a coupling, a chain, a gear, an annular belt and a reduction gearbox is arranged between the motor shaft of the tensioning motor 1252 and the driving shaft 12534, so that the driving and tensioning motors 1252 are more accurately and safely coupled. When the motor shaft is connected to the driving shaft 12534 by different connection structures, the motor shaft of the tension motor 1252 and the driving shaft 12534 are in different spatial states. Therefore, different connection methods can be selected to connect the tensioning motor 1252 and the driving shaft 12534 according to actual design requirements.
Further, in a preferred embodiment provided herein, the motor shaft of the tensioning motor 1252 is collinear or parallel with the drive shaft 12534.
The motor shaft of the tensioning motor 1252 is collinear or parallel with the driving shaft 12534, that is, the driving shaft 12534 runs at a rotational angular velocity consistent with the motor shaft of the tensioning motor 1252 under the action of the tensioning motor 1252, so that the number of rotation turns of the driving shaft 12534 can be accurately controlled by the tensioning motor 1252, and the control of the moving distance of the driving shaft 12534 can be realized.
Further, in a preferred embodiment provided herein, a motor shaft of the tensioning motor 1252 is perpendicular to the driving shaft 12534; the motor shaft is connected with a first bevel gear; a second bevel gear is connected to the drive shaft 12534; the first bevel gear and the second bevel gear are meshed with each other.
When the motor shaft of the tensioning motor 1252 is perpendicular to the driving shaft 12534, when the motor shaft of the tensioning motor 1252 drives the first bevel gear to rotate at a certain angular speed, the second bevel gear engaged with the first bevel gear rotates along with the first bevel gear, so as to drive the driving shaft 12534 connected to the second bevel gear to rotate. The specific tooth number, gear radius and other parameters of the first bevel gear and the second bevel gear can be designed according to actual requirements.
Further, in a preferred embodiment provided herein, the conveying belt detecting device 1251 includes: a roller 12511 abutting the conveyor belt 122 and having the same linear velocity as the conveyor belt 122; an encoder 12512 for calculating the linear velocity of the roller 12511; and the processor is used for judging whether the conveying belt 122 is in a slipping state relative to the driving roller 123 or not and sending a tensioning control signal when the conveying belt 122 slips relative to the driving roller 123.
It can be understood that when the transmission belt 122 is in a tensioned state, the transmission belt 122 is driven by the driving roller 123 and the driven roller 124 at a certain rotation speed to circulate, and the transmission belt 122 keeps moving at a certain speed. However, when the conveying belt 122 is in a slack state, the moving speed of the ore conveying-side conveying belt 122 between the drive roller 123 and the driven roller 124 changes accordingly. Therefore, the conveyor belt detecting device 1251 can intuitively determine whether the conveyor belt 122 slips or not by detecting the moving speed of the ore conveying-side conveyor belt 122, and the accuracy is high.
Specifically, referring to fig. 3, the real-time speed of the conveyor belt 122 may be measured by a roller 12511 abutting the ore transport side conveyor belt 122. Here the roller 12511 may be secured to the mineral classifier 100 by a connection. If the conveyor belt 122 is always in a tensioned state and the moving speed thereof is constant, the rotational angular speed and linear speed of the roller 12511 abutting against the conveyor belt 122 in a fixed posture are constant. If the conveyor belt slips, the rotational angular velocity and linear velocity of the roller 12511 abutting the conveyor belt 122 in a fixed posture change. The speed of the conveyor belt 122 is monitored by the roller 12511 abutting against the conveyor belt 122, and the response speed is sensitive. Compared with the traditional target point marking detection method, the method has shorter measuring and calculating period. The rotational angular velocity of the roller 12511 abutting the conveyor belt 122 in a fixed posture can be obtained by an encoder 12512 rotatably coupled to the roller 12511. The amount of pulses from the encoder 12512 is fixed and as the rotating shaft of the roller 12511 rotates, the encoder 12512 outputs pulses to the processor. When the rotating speed of the rotating shaft of the roller 12511 is different, the total amount of pulses received by the processor in unit time is different, so that the linear speed of the roller 12511 can be calculated according to parameters such as relevant pulse parameters of an actually adopted encoder and the obtained pulse amount. When the processor detects that the conveyor belt 122 slips relative to the drive roller 123, a tension control signal is sent to the tension motor 1252. The tension pack 1253, driven by the tension motor 1252, deploys tension adjustments to the conveyor belt 122 until the processor detects that the linear speed of the roller 12511 is consistent with the running speed of the conveyor belt 122, and stops sending tension control signals. It should be noted that the tension control signal can also be sent to the equipment maintenance end for abnormality warning, so that the worker can find the abnormality in time.
Referring to fig. 4, the embodiment of the present application further provides a belt tensioner 200, including:
the conveying belt detection device 1251 is used for sending a tensioning control signal when the slippage of the conveying belt and the driving roller is detected;
a tensioning motor 1252 for operating upon receiving the tensioning control signal;
a tensioning assembly 1253 driven by the tensioning motor to tension the conveyor belt.
The belt tensioner 200 may be used to tension a belt in a loop that is slack or acts as an idler. The conveyor belt tensioner 200 may be installed at a suitable position according to the actual situation in the installation in which the conveyor belt is installed. However, in order to ensure the tensioning effect, the conveyor belt tensioning device 200 is preferably used for tensioning the conveyor belt made of nylon rubber material, that is, preferably installed on the transportation equipment provided with the conveyor belt made of nylon rubber material. In one embodiment provided herein, the conveyor belt tensioning device 200 is used for tensioning a mineral conveyor belt in a mineral separator 100.
Specifically, when the conveyor belt 122 is used for an excessively long time or the operating temperature changes, the length of the conveyor belt 122 increases, the tension state is broken, and the conveyor belt is in a slack state, so that it may slip against the drive roller 123. However, in practical applications, a safety isolation device is usually disposed on the outer ring of the conveying mechanism 12 to prevent workers from accidentally injuring the conveying belt 122 due to ore splashing, so that the workers cannot find the slipping of the conveying belt 122 at the first time. When an abnormal adjustment of the belt tension is found, the ore that has been sorted often needs to be sorted again, which undoubtedly reduces the efficiency of ore sorting. Therefore, it is necessary to provide a belt detecting device 1251 for detecting the moving state of the belt 122 in the belt tensioner 200.
When the state of the conveying belt 122 is detected to be abnormal, the conveying belt detecting device 1251 immediately sends out an abnormal signal, so that the tensioning adjustment of the conveying belt 122 can be immediately performed. That is, when the conveyance belt detecting device 1251 detects the occurrence of a slip of the conveyance belt 122 with respect to the drive roller 123, the tension control signal is immediately issued. The tensioning control signal can be sent to the equipment maintenance end for exception warning. When the worker finds the abnormal warning information, the operation of the mineral product sorter 100 can be suspended, and the tensioning adjustment of the conveyor belt 122 is performed. Thus, although the worker can timely know that the transmission mechanism 12 is abnormally transmitted, the tension of the transmission belt 122 is manually adjusted, which undoubtedly increases the manpower input and takes a long time. Thus, the tension adjustment signal may also be sent to the automatic adjustment mechanism for the tension of the conveyor belt 122.
Specifically, when the tension control signal is acquired by the automatic tension adjusting mechanism of the conveyor belt 122, the tension of the conveyor belt 122 can be adjusted. The conveyor belt 122 is tension-adjusted, that is, the conveyor belt 122 in a slack state after the length is increased is stretched to increase the wrap angle between the conveyor belt 122 and the drive roller 123 and the driven roller 124, so that the conveyor belt 122 is restored to the original tension state between the ore conveying side and the drive roller 123 and the driven roller 124. The wrap angle between the conveyor belt 122 and the drive roller 123 and the driven roller 124 is increased, and mainly, a tension adjusting mechanism is provided on the side away from the ore conveying side, and the conveyor belt 122 is stretched in the direction close to the ore conveying side conveyor belt 122 or away from the ore conveying side conveyor belt 122.
It will be appreciated that the motor is capable of converting electrical energy into mechanical energy and, via the motor shaft, moving the device to which it is connected in a predetermined manner. Therefore, a motor is preferred here as a power source of the tension automatic adjusting mechanism. When receiving a tensioning control signal sent by the conveyor belt detection device 1251, the tensioning motor 1252 may operate according to a preset mode, so as to drive the tensioning assembly 1253 directly contacting the conveyor belt 122 to move until the conveyor belt 122 returns to a tensioned state.
It should be noted that the mineral separator 100 has different distances between the driving roller 123 and the driven roller 124 in different practical application scenarios. For example, the overall size of the miniaturized mineral separator 100 is small, and the distance between the driving roller 123 and the driven roller 124 is small, so that only one set of the belt tensioning device 200 is required to complete the tensioning adjustment of the conveyor belt 122. However, in the large mineral separator 100, the distance between the driving roller 123 and the driven roller 124 may be several tens of meters, and if the conveyor belt 122 is tensioned and adjusted only by one set of the conveyor belt 122 tensioning automatic adjusting mechanism, a large longitudinal space is required, and therefore, a plurality of sets of the conveyor belt 122 tensioning automatic adjusting mechanisms may be provided to tension and adjust the conveyor belt 122 together. Thus, the conveyor belt 122 on the opposite side of the ore conveying side is divided into a plurality of units of conveyor belts 122 having different moving directions by the plural sets of conveyor belt 122 tension automatic adjusting mechanisms. When the automatic tensioning adjusting mechanisms of the multiple groups of conveying belts 122 work, the adjacent conveying belts 122 move reversely between the automatic tensioning adjusting mechanisms, and the unit length of the conveying belt 122 between the two conveying belts is increased. The greater the number of sets of belt tensioners 200 provided, the less longitudinal space is required.
Further, in a preferred embodiment provided herein, the tensioning assembly 1253 includes: a bearing 12531 abutting the conveyor belt 122; a roller shaft 12532 coaxial with the bearing 12531; a mount 12533 mounting the roller shaft 12532; a drive shaft 12534 for actuating the roller shaft 12532 to adjust the position relative to the mount 12533.
The bearing 12531 is in direct contact with the transmission belt 122, and when the transmission belt 122 is in a tensioned state, the bearing 12531 is driven to rotate at a certain rotation speed. But when the conveyor belt 122 is in a slack condition, the bearing 12531 loses its power source. That is, the wrap angle between the conveyor belt 122 and the bearing 12531 becomes gradually smaller. Therefore, the position of the bearing 12531 needs to be adjusted until it comes back into contact with the slack belt 122. That is, by adjusting the position of the bearing 12531, the wrap angle between the conveyor belt 122 and the bearing 12531 is increased. At this time, the transmission belt 122 is restored to the tensioned state by the thrust of the bearing 12531. Also, in the process of adjusting the position of the bearing 12531, the length of the conveying belt 122 unit between the bearing 12531 and the adjacent roller is also changed. The adjacent rollers may be understood as the drive roller 123, or the driven roller 124, or the rollers of the adjacent tensioning group 1253 of the transport mechanism 12.
It will be appreciated that the bearings 12531 are stabilized for rotation by the coaxial roller shafts 12532. Also, in the process of adjusting the position of the bearing 12531, the position of the roller shaft 12532 is changed accordingly. The roller axle 12532 can be kept stable without being limited and supported by the mounting seat 12533. The position of the bearing 12531 and the roller shaft 12532 is adjusted by driving the drive shaft 12534. The drive shaft 12534 may be a lead screw or hydraulic rod depending on the requirements of the particular application. However, the hydraulic rod has certain requirements on the actual working environment temperature, the installation direction and the stress angle, and therefore, the lead screw is preferably used as the driving shaft 12534. In order to ensure accurate control of the moving distance of the lead screw, a motor is preferably used as a power source. I.e., the power for the drive shaft 12534, is derived from the tensioning motor 1252. When the tensioning motor 1252 is operated in a predetermined manner, the drive shaft 12534 is caused to rotate at an angular velocity to effect a change in the position of the bearing 12531 and thus the roller shaft 12532 relative to the mounting block 12533.
In order to ensure that the tensioning motor 1252 can stably drive the driving shaft 12534, any one of a coupling, a chain, a gear, an annular belt and a reduction gearbox is arranged between the motor shaft of the tensioning motor 1252 and the driving shaft 12534, so that the driving and tensioning motors 1252 are more accurately and safely coupled. When the motor shaft is connected to the driving shaft 12534 by different connection structures, the motor shaft of the tension motor 1252 and the driving shaft 12534 are in different spatial states. Therefore, different connection methods can be selected to connect the tensioning motor 1252 and the driving shaft 12534 according to actual design requirements.
Further, in a preferred embodiment provided herein, the motor shaft of the tensioning motor 1252 is collinear or parallel with the drive shaft 12534.
The motor shaft of the tensioning motor 1252 is collinear or parallel with the driving shaft 12534, that is, the driving shaft 12534 runs at a rotational angular velocity consistent with the motor shaft of the tensioning motor 1252 under the action of the tensioning motor 1252, so that the number of rotation turns of the driving shaft 12534 can be accurately controlled by the tensioning motor 1252, and the control of the moving distance of the driving shaft 12534 can be realized.
Further, in a preferred embodiment provided herein, a motor shaft of the tensioning motor 1252 is perpendicular to the driving shaft 12534; the motor shaft is connected with a first bevel gear; a second bevel gear is connected to the drive shaft 12534; the first bevel gear and the second bevel gear are meshed with each other.
When the motor shaft of the tensioning motor 1252 is perpendicular to the driving shaft 12534, when the motor shaft of the tensioning motor 1252 drives the first bevel gear to rotate at a certain angular speed, the second bevel gear engaged with the first bevel gear rotates along with the first bevel gear, so as to drive the driving shaft 12534 connected to the second bevel gear to rotate. The specific tooth number, gear radius and other parameters of the first bevel gear and the second bevel gear can be designed according to actual requirements.
Further, in a preferred embodiment provided herein, the conveying belt detecting device 1251 includes: a roller 12511 abutting the conveyor belt 122 and having the same linear velocity as the conveyor belt 122; an encoder 12512 for calculating the linear velocity of the roller 12511; and the processor is used for judging whether the conveying belt 122 is in a slipping state relative to the driving roller 123 or not and sending a tensioning control signal when the conveying belt 122 slips relative to the driving roller 123.
It can be understood that when the transmission belt 122 is in a tensioned state, the transmission belt 122 is driven by the driving roller 123 and the driven roller 124 at a certain rotation speed to circulate, and the transmission belt 122 keeps moving at a certain speed. However, when the conveying belt 122 is in a slack state, the moving speed of the ore conveying-side conveying belt 122 between the drive roller 123 and the driven roller 124 changes accordingly. Therefore, the conveyor belt detecting device 1251 can intuitively determine whether the conveyor belt 122 slips or not by detecting the moving speed of the ore conveying-side conveyor belt 122, and the accuracy is high.
Specifically, the real-time speed of the conveyor belt 122 may be measured by the roller 12511 abutting the ore conveying side conveyor belt 122. Here the roller 12511 may be secured to the mineral classifier 100 by a connection. If the conveyor belt 122 is always in a tensioned state and the moving speed thereof is constant, the rotational angular speed and linear speed of the roller 12511 abutting against the conveyor belt 122 in a fixed posture are constant. If the conveyor belt slips, the rotational angular velocity and linear velocity of the roller 12511 abutting the conveyor belt 122 in a fixed posture change. The speed of the conveyor belt 122 is monitored by the roller 12511 abutting against the conveyor belt 122, and the response speed is sensitive. Compared with the traditional target point marking detection method, the method has shorter measuring and calculating period. The rotational angular velocity of the roller 12511 abutting the conveyor belt 122 in a fixed posture can be obtained by an encoder 12512 rotatably coupled to the roller 12511. The amount of pulses from the encoder 12512 is fixed and as the rotating shaft of the roller 12511 rotates, the encoder 12512 outputs pulses to the processor. When the rotating speed of the rotating shaft of the roller 12511 is different, the total amount of pulses received by the processor in unit time is different, so that the linear speed of the roller 12511 can be calculated according to parameters such as relevant pulse parameters of an actually adopted encoder and the obtained pulse amount. When the processor detects that the conveyor belt 122 slips relative to the drive roller 123, a tension control signal is sent to the tension motor 1252. The tension pack 1253, driven by the tension motor 1252, deploys tension adjustments to the conveyor belt 122 until the processor detects that the linear speed of the roller 12511 is consistent with the running speed of the conveyor belt 122, and stops sending tension control signals. It should be noted that the tension control signal can also be sent to the equipment maintenance end for abnormality warning, so that the worker can find the abnormality in time.
When the belt tensioner 200 is applied to other apparatuses in which a conveyor belt is installed for belt tensioning adjustment, the tensioning method thereof may refer to the operation of the belt tensioner 200 in a mineral sorting machine. It will be appreciated that the particular apparatus to which the belt tensioner 200 is applied is clearly not a limitation on the scope of the present application.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the statement that there is an element defined as "comprising" … … does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A mineral separator, comprising:
a feed mechanism for feeding ore;
the conveying mechanism is used for conveying the ore to a preset position after the ore is loaded from the feeding mechanism;
the detection mechanism is used for detecting ores at a preset position;
the sorting mechanism is used for sorting and picking up the detection result of the ore according to the detection mechanism;
wherein the conveying mechanism comprises a conveying belt;
the driving roller drives the conveying belt to move;
the driven roller is matched with the driving roller to realize circulation of the conveying belt;
and the transmission belt tensioning device is arranged between the driving roller and the driven roller.
2. The mineral separator of claim 1, wherein the conveyor belt tensioning device comprises:
the transmission belt detection device is used for sending a tensioning control signal when the transmission belt and the driving roller are detected to slip;
the tensioning motor is used for operating when receiving the tensioning control signal;
and the tensioning combination is driven by the tensioning motor to tension the conveying belt.
3. The mineral separator of claim 2, wherein the tensioning assembly includes:
a bearing abutting against the conveyor belt;
a roller shaft coaxial with the bearing;
a mounting seat for mounting the roller shaft;
and the driving shaft drives the roller shaft to adjust the position relative to the mounting seat.
4. The mineral separator of claim 3, wherein a motor shaft of the tensioning motor is collinear or parallel with the drive shaft.
5. The mineral separator of claim 3, wherein a motor shaft of the tensioning motor is perpendicular to the drive shaft;
the motor shaft is connected with a first bevel gear;
the driving shaft is connected with a second bevel gear;
the first bevel gear and the second bevel gear are meshed with each other.
6. The mineral separator of claim 1, wherein the conveyor belt detection device comprises:
the roller is abutted to the conveying belt and has the same linear speed as the conveying belt;
an encoder for calculating the linear velocity of the roller;
and the processor is used for judging whether the transmission belt is in a slipping state relative to the driving roller or not and sending a tensioning control signal when the transmission belt is in a slipping state relative to the driving roller.
7. A conveyor belt tensioning device, comprising:
the transmission belt detection device is used for sending a tensioning control signal when the transmission belt and the driving roller are detected to slip;
the tensioning motor is used for operating when receiving the tensioning control signal;
and the tensioning combination is driven by the tensioning motor to tension the conveying belt.
8. A conveyor belt tensioner as claimed in claim 7, wherein the tensioning assembly comprises:
a bearing abutting against the conveyor belt;
a roller shaft coaxial with the bearing;
a mounting seat for mounting the roller shaft;
and the driving shaft drives the roller shaft to adjust the position relative to the mounting seat.
9. A conveyor belt tensioner as claimed in claim 8, in which the motor shaft of the tensioning motor is collinear with or parallel to the drive shaft.
10. A conveyor belt tensioner as claimed in claim 8, in which the motor shaft of said tensioning motor is perpendicular to said drive shaft;
the motor shaft is connected with a first bevel gear;
the driving shaft is connected with a second bevel gear;
the first bevel gear and the second bevel gear are meshed with each other.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111080487.5A CN113751362A (en) | 2021-09-15 | 2021-09-15 | Mineral product sorter and transmission band tensioning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111080487.5A CN113751362A (en) | 2021-09-15 | 2021-09-15 | Mineral product sorter and transmission band tensioning device |
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| CN113751362A true CN113751362A (en) | 2021-12-07 |
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| CN202111080487.5A Pending CN113751362A (en) | 2021-09-15 | 2021-09-15 | Mineral product sorter and transmission band tensioning device |
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