阅读说明：本技术 一种皮带输送机自适应型清扫器 (Self-adaptive sweeper for belt conveyor ) 是由 杨腾飞 张怡 于 2021-10-28 设计创作，主要内容包括：本发明公开了一种皮带输送机自适应型清扫器,包括固定座,所述固定座之间设有支撑轴,所述支撑轴上设有清扫组件,所述支撑轴的两端设有张紧组件；所述清扫组件包括与所述支撑轴相连接的支撑件,所述支撑件上设有固定件,所述固定件上连接有与皮带相适应的清扫刀片；所述张紧组件包括套设在所述支撑轴外周的张紧套,所述张紧套上设有张紧螺栓,所述张紧套连接有连接块,所述连接块上贯穿有调节孔,所述调节孔内穿插有调节杆；所述调节孔上方的调节杆的外周套设有张紧弹簧,所述调节杆的上端螺纹连接有调节螺母；本发明能够提高清扫器调节时的自适应程度,防止皮带被划伤或拉伤,降低人工调节工作量。(The invention discloses a self-adaptive sweeper for a belt conveyor, which comprises fixed seats, wherein a supporting shaft is arranged between the fixed seats, a sweeping assembly is arranged on the supporting shaft, and tensioning assemblies are arranged at two ends of the supporting shaft; the cleaning assembly comprises a supporting piece connected with the supporting shaft, a fixing piece is arranged on the supporting piece, and a cleaning blade matched with the belt is connected to the fixing piece; the tensioning assembly comprises a tensioning sleeve sleeved on the periphery of the supporting shaft, a tensioning bolt is arranged on the tensioning sleeve, the tensioning sleeve is connected with a connecting block, an adjusting hole penetrates through the connecting block, and an adjusting rod penetrates through the adjusting hole; the periphery of the adjusting rod above the adjusting hole is sleeved with a tensioning spring, and the upper end of the adjusting rod is in threaded connection with an adjusting nut; the invention can improve the self-adaptive degree of the sweeper during adjustment, prevent the belt from being scratched or pulled and reduce the workload of manual adjustment.)

1. A self-adaptive sweeper for a belt conveyor comprises fixed seats and is characterized in that a supporting shaft is arranged between the fixed seats, a sweeping assembly is arranged on the supporting shaft, and tensioning assemblies are arranged at two ends of the supporting shaft;

the cleaning assembly comprises a supporting piece connected with the supporting shaft, a fixing piece is arranged on the supporting piece, and a cleaning blade matched with the belt is connected to the fixing piece;

the tensioning assembly comprises a tensioning sleeve sleeved on the periphery of the supporting shaft, a tensioning bolt is arranged on the tensioning sleeve, the tensioning sleeve is connected with a connecting block, an adjusting hole penetrates through the connecting block, an adjusting rod penetrates through the adjusting hole, and the lower end of the adjusting rod is connected with the fixed seat through a connecting rod; the periphery of the adjusting rod above the adjusting hole is sleeved with a tensioning spring, and the upper end of the adjusting rod is in threaded connection with an adjusting nut; the adjusting nut is rotated to compress the tensioning spring, the tensioning spring drives the tensioning sleeve to rotate through the connecting block, and the tensioning sleeve drives the cleaning assembly to synchronously rotate through the supporting shaft so as to adjust the distance between the cleaning blade and the surface of the belt;

the adjusting rod is provided with an adjusting assembly, the adjusting assembly comprises an electromagnetic part in threaded connection with the adjusting rod, a permanent magnet part corresponding to the electromagnetic part is sleeved on the adjusting rod and is connected with the upper end of the tensioning spring through a connecting part, and a pressure sensor is arranged in the connecting part;

when the device is installed, the adjusting nut is rotated to a specified position, and a first current is introduced into the electromagnetic part through the controller, so that magnetic repulsion force is generated between the electromagnetic part and the permanent magnet part, the permanent magnet part compresses the tensioning spring through the connecting part, and the tensioning spring drives the cleaning blade to rotate to the first position through the tensioning assembly and the supporting shaft;

and a second current is introduced into the electromagnetic part through the controller, so that the electromagnetic part generates magnetic repulsion force on the permanent magnetic part to increase, the tensioning spring is further compressed, and the tensioning spring drives the cleaning blade to rotate to a second position through the tensioning assembly and the supporting shaft, so that the cleaning blade cleans the surface of the belt.

2. The belt conveyor adaptive sweeper of claim 1, wherein: when the cleaning blade rotates to the first position, the knife edge part of the cleaning blade is in clearance fit with the surface of the belt.

3. The belt conveyor adaptive sweeper of claim 1, wherein: when the cleaning blade rotates to the second position, the knife edge part of the cleaning blade is in pressing contact with the surface of the belt.

4. The belt conveyor adaptive sweeper of claim 1, wherein: the time of one rotation of the belt is T, and T is L/v, wherein L is the length of the belt, and v is the moving speed of the belt; in the time T of one rotation of the belt, the time for the controller to supply the second current to the electromagnetic part is T1, and the time for the controller to supply the first current to the electromagnetic part is T2, wherein T is T1+ T2; during the period t2, the joint position of the belt passes the position of the sweeping blade.

5. The belt conveyor adaptive sweeper of claim 1, wherein: the controller increases the current led into the permanent magnet part according to a preset time period so as to increase the magnetic force of the electromagnetic part and further increase the magnetic repulsion force between the electromagnetic part and the permanent magnet part.

6. The belt conveyor adaptive sweeper of claim 1, wherein: when the pressure value detected by the pressure sensor exceeds a preset range, the controller changes the direction of current introduced into the electromagnetic part to generate magnetic attraction between the electromagnetic part and the permanent magnetic part, and the permanent magnetic part drives the cleaning blade to rotate to a third position through the tensioning spring, the connecting block, the tensioning sleeve and the supporting shaft; when the cleaning blade is located at the third position, the knife edge part of the cleaning blade is in clearance fit with the surface of the belt.

7. The belt conveyor adaptive sweeper of claim 6, wherein: when the cleaning blade is located at the third position, the width of the gap from the knife edge part of the cleaning blade to the surface of the belt is larger than the width of the gap from the knife edge part of the cleaning blade to the surface of the belt when the cleaning blade is located at the first position.

8. The belt conveyor adaptive sweeper of claim 1, wherein: the cleaning blade is made of modified polyurethane, the shape of the edge of the cleaning blade is arc-shaped, and the cleaning blade is movably connected with the fixing piece.

9. The belt conveyor adaptive sweeper of claim 1, wherein: the cleaning blade is of a three-section type, two sections of cleaning blades on two sides respectively correspond to the upper surfaces on two sides of the belt, and the cleaning blade in the middle section corresponds to the middle surface of the belt.

10. The belt conveyor adaptive sweeper of claim 1, wherein: the adjusting nuts are two, wherein one is a left-handed screw locknut, and the other is a right-handed screw locknut.

Technical Field

The invention belongs to the technical field of belt conveyor cleaning devices, and particularly relates to a self-adaptive cleaner for a belt conveyor.

Background

The belt conveyor sweeper is mainly used for sweeping residual materials on a belt, the residual materials are prevented from being scattered in a return section of the conveyor to pollute the environment, the problem that the residual materials are stuck on a carrier roller to cause deviation of the return belt is avoided, meanwhile, abrasion of the belt can be reduced through sweeping of the belt, and the sweeper plays a vital role in stable operation of the belt. The sweeper of the belt conveyor is divided into a head sweeper, a middle sweeper and a tail sweeper; the head sweeper also becomes a first sweeper and is mainly used for sweeping a belt at the return stroke of a roller of a machine head of the belt conveyor, and the sweeper at the position is generally matched with the belt conveyor and is provided with a heavy hammer tensioning mechanism or a spring tensioning mechanism, so that the sweeper is tightly attached to the belt, and the sweeping effect of the sweeper on the return belt is ensured.

The patent with the application number of CN201520982351.7 discloses a belt cleaner, which comprises a blade and a tool rest, wherein two ends of the tool rest are respectively provided with a telescopic rod, and a tensioner swing arm and a tensioner supporting seat are sequentially fixed on the telescopic rod in the axial direction; the tensioner supporting seat is connected with a pressing mechanism which rotates along the axial direction, and the pressing end of the pressing mechanism is attached to the long swing arm of the tensioner swing arm. The sweeper enables the pressing mechanism to push the position of the tensioner swing arm by rotating the direction of the lead screw so as to adjust the rotation angle of the blade; the transverse distance of the blade is adjusted through the ingenious structural matching of the swing arm of the tensioner and the flange sleeve. The sweeper has good adjustability, convenient blade replacement and improved production efficiency. In addition, the sweeper enables the swing arm of the tensioner to be reliably fixed with the telescopic rod, and the sweeper is guaranteed to work reliably.

However, in practical use of the belt sweeper of the above type, on one hand, after the sweeper is worn, the tensioning mechanism is often manually adjusted to enable the sweeper to be tightly attached to the belt, so that the manual labor is increased, and the self-adaptive degree of the sweeper is poor; on the other hand, after the belt is installed or replaced, a belt buckle joint or a cold joint often exists, when the joint of the type passes through the sweeper, the joint often moves in a relative extrusion mode with the sweeper, after the belt runs for a long time, the sweeper and the joint are abraded, when the sweeper is serious, the joint can be disengaged, peeled and the like, and potential safety production hazards exist.

Therefore, the existing belt sweeper needs to be improved, and the problems that the tension degree of the existing sweeper needs to be manually adjusted, the workload is increased, and the sweeper is easy to cause belt joint damage and excessive abrasion of the sweeper are solved.

Disclosure of Invention

In view of the above situation, in order to overcome the defects of the prior art, the invention provides a self-adaptive sweeper for a belt conveyor, which effectively solves the problems that the sweeper in the background art needs to manually adjust the tension degree to increase the workload and the sweeper is easy to cause belt joint damage and excessive self abrasion.

In order to achieve the purpose, the invention provides the following technical scheme: a self-adaptive sweeper for a belt conveyor comprises fixed seats, wherein a supporting shaft is arranged between the fixed seats, a sweeping assembly is arranged on the supporting shaft, and tensioning assemblies are arranged at two ends of the supporting shaft;

the cleaning assembly comprises a supporting piece connected with the supporting shaft, a fixing piece is arranged on the supporting piece, and a cleaning blade matched with the belt is connected to the fixing piece;

the tensioning assembly comprises a tensioning sleeve sleeved on the periphery of the supporting shaft, a tensioning bolt is arranged on the tensioning sleeve, the tensioning sleeve is connected with a connecting block, an adjusting hole penetrates through the connecting block, an adjusting rod penetrates through the adjusting hole, and the lower end of the adjusting rod is connected with the fixed seat through a connecting rod; the periphery of the adjusting rod above the adjusting hole is sleeved with a tensioning spring, and the upper end of the adjusting rod is in threaded connection with an adjusting nut; the adjusting nut is rotated to compress the tensioning spring, the tensioning spring drives the tensioning sleeve to rotate through the connecting block, and the tensioning sleeve drives the cleaning assembly to synchronously rotate through the supporting shaft so as to adjust the distance between the cleaning blade and the surface of the belt;

the adjusting rod is provided with an adjusting assembly, the adjusting assembly comprises an electromagnetic part in threaded connection with the adjusting rod, a permanent magnet part corresponding to the electromagnetic part is sleeved on the adjusting rod and is connected with the upper end of the tensioning spring through a connecting part, and a pressure sensor is arranged in the connecting part;

when the device is installed, the adjusting nut is rotated to a specified position, and a first current is introduced into the electromagnetic part through the controller, so that magnetic repulsion force is generated between the electromagnetic part and the permanent magnet part, the permanent magnet part compresses the tensioning spring through the connecting part, and the tensioning spring drives the cleaning blade to rotate to the first position through the tensioning assembly and the supporting shaft;

and a second current is introduced into the electromagnetic part through the controller, so that the electromagnetic part generates magnetic repulsion force on the permanent magnetic part to increase, the tensioning spring is further compressed, and the tensioning spring drives the cleaning blade to rotate to a second position through the tensioning assembly and the supporting shaft, so that the cleaning blade cleans the surface of the belt.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the cleaning device, the adjusting nut, the tensioning spring, the cleaning blade and the like are arranged, when the distance between the cleaning blade and the belt needs to be adjusted, the adjusting nut is rotated to compress the tensioning spring, the tensioning spring drives the tensioning sleeve to rotate through the connecting block, the tensioning sleeve drives the cleaning assembly to synchronously rotate through the supporting shaft, so that the distance between the cleaning blade and the surface of the belt is adjusted, the cleaning effect of the cleaning blade on the belt is adjusted, and the field production requirement is met;

2. the cleaner is positioned at the second position when in normal work by arranging the electromagnetic part, the permanent magnetic part and the like, so that a better cleaning effect is ensured; when the belt joint is about to reach the position of the cleaning blade, the controller leads first current into the electromagnetic part, when the belt joint reaches the position of the cleaning blade, the belt joint generates reverse acting force on the cleaning blade, and the cleaning blade leaves the second position and moves to the first position or directly moves to the first position; at the moment, the distance between the cleaning blade and the roller below the belt is increased, so that the problem that the belt joint is buckled and separated or the cold bonding leather falls off due to the fact that the cleaning blade excessively extrudes the belt joint can be prevented, and a better protection effect is achieved on the belt joint; on the other hand, the reverse extrusion force of the belt joint to the cleaning blade can be reduced, so that the excessive abrasion of the cleaning blade caused by the belt joint is prevented; moreover, even if the cleaning blade leaves the second position, the cleaning blade can still be contacted with the flat belt joint and the belt moving subsequently, so that the cleaning blade can still clean the belt joint and objects remained on the belt after leaving the second position, and the continuous cleaning effect of the cleaner is ensured;

3. according to the belt cleaning device, the electromagnetic part and the permanent magnet part are arranged and work together with the adjusting nut, the current led into the permanent magnet part is increased through the controller according to the preset time period, so that the magnetic force of the electromagnetic part is increased, the magnetic repulsion force between the electromagnetic part and the permanent magnet part is further increased, the permanent magnet part further compresses the tensioning spring, the tensioning spring drives the tensioning sleeve to rotate through the connecting block, the tensioning sleeve drives the cleaning assembly to synchronously rotate through the supporting shaft, the distance between the cleaning blade and the surface of the belt is further adjusted, and the cleaning effect of the abraded cleaning blade on the belt is improved. The adjusting nut, the electromagnetic part and the permanent magnet part are mutually cooperated to adjust the cleaning blade through the matching of the adjusting nut, the electromagnetic part and the permanent magnet part, so that the self-adjusting self-adaption degree of the cleaner is adjusted, and the manual workload is reduced;

4. according to the invention, the pressure sensor is arranged and is matched with the electromagnetic part and the permanent magnetic part to work together, when the pressure value detected by the pressure sensor exceeds a preset range, an object is clamped between the cleaning blade and the belt, at the moment, the controller changes the direction of current introduced into the electromagnetic part, so that magnetic attraction is generated between the electromagnetic part and the permanent magnetic part, and the permanent magnetic part drives the cleaning blade to rotate to a third position through the tensioning spring, the connecting block, the tensioning sleeve and the supporting shaft; when the cleaning blade is positioned at the third position, the knife edge part of the cleaning blade is in clearance fit with the surface of the belt. When the cleaning blade is located at the third position, the width of the gap between the edge of the cleaning blade and the surface of the belt is larger than the width of the gap between the edge of the cleaning blade and the surface of the belt when the cleaning blade is located at the first position. Because the clearance between cleaning blade and the belt increases, the debris of card between cleaning blade and belt lean on the dead weight or can be impacted by remaining object on the follow-up belt gradually and drop to discharge the potential safety in production in time and fall, prevent that the belt from being scratched or pulling, guarantee belt conveyor normal production.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of another embodiment of the present invention;

FIG. 3 is a schematic view of the position of the sweeping blade and belt of the present invention;

FIG. 4 is a schematic view of the sweeping blade of the present invention in a first position;

FIG. 5 is an enlarged view of a portion of FIG. 4;

FIG. 6 is a schematic view of the sweeping blade of the present invention in a second position;

FIG. 7 is an enlarged view of a portion of FIG. 6B;

FIG. 8 is a schematic view of a sweeping blade of the present invention in a third position;

FIG. 9 is an enlarged view of a portion of FIG. 8 at C according to the present invention;

in the figure: 1. a fixed seat; 2. a support shaft; 3. a sweeping assembly; 301. a support member; 302. a fixing member; 303. cleaning a blade; 4. a tension assembly; 401. a tensioning sleeve; 402. tensioning the bolt; 403. connecting blocks; 404. an adjustment hole; 405. adjusting a rod; 406. a connecting rod; 407. tensioning the spring; 408. adjusting the nut; 5. a belt; 6. an adjustment assembly; 601. an electromagnetic section; 602. a permanent magnet section; 603. a connecting portion.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.

Example one

As shown in fig. 1-3, a self-adaptive cleaner for a belt conveyor comprises two fixed seats 1, wherein the fixed seats 1 are used for being connected and fixed with belt frames on two sides of a belt conveyor to provide support for the whole cleaning device. The inside bearing that is equipped with of fixing base 1 is equipped with back shaft 2 between two fixing bases 1, and back shaft 2 can rotate around fixing base 1 under the support of bearing, and then realizes cleaning subassembly 3 through rotating back shaft 2 drive and rotate to adjust the distance of cleaning blade 303 to belt 5, and then the effect of cleaning of adjustment sweeper.

The supporting shaft 2 is provided with a cleaning component 3. Specifically, the cleaning assembly 3 comprises a supporting member 301 connected with the supporting shaft 2, a fixing member 302 is arranged on the supporting member 301, and a cleaning blade 303 adapted to the belt 5 is connected to the fixing member 302; by adjusting the distance between the knife edge of the cleaning blade 303 and the upper surface of the belt 5, the cleaning blade 303 scrapes off the residual objects on the belt 5, and the effect of cleaning the belt 5 is achieved. The cleaning blade 303 is made of a modified polyurethane material, has flame retardant and antistatic properties, has the characteristics of high wear resistance, high elasticity, acid and alkali resistance, low friction coefficient and the like, can reduce the damage to the belt 5 to the greatest extent in the cleaning process, and can greatly prolong the service life of the cleaning blade.

In order to improve the adaptability of the cleaner, the cleaning blade 303 is improved, the cleaning blade 303 is in a three-section type, two sections of cleaning blades 303 on two sides respectively correspond to the upper surfaces on two sides of the belt 5, and the cleaning blade 303 in the middle section corresponds to the middle surface of the belt 5. The shape of the edge of the cleaning blade 303 is arc, and the cleaning blade 303 is movably connected with the fixing member 302. Most of the residual materials on the belt 5 are concentrated at the middle position of the belt 5, so that the abrasion speed of the cleaning blade 303 at the middle section is higher than that of the cleaning blades 303 at the two sides; and through the swing joint between cleaning blade 303 and the mounting 302, can change alone cleaning blade 303 to the very fast interlude of wearing and tearing, and then improve the whole life of sweeper, reduce whole change frequency, reduce the expenditure cost.

The two ends of the supporting shaft 2 are provided with tensioning assemblies 4. Specifically, tensioning element 4 is including the cover establish the tensioning sleeve 401 in 2 peripheries of back shaft, is equipped with tensioning bolt 402 on the tensioning sleeve 401, can link back shaft 2 and tensioning sleeve 401 together through tensioning bolt 402, can drive back shaft 2 through tensioning sleeve 401 and rotate, and then drives through back shaft 2 and clean subassembly 3 and rotate to the position that subassembly 3 was cleaned in the regulation satisfies the demand that cleans of belt 5. The tensioning sleeve 401 is connected with a connecting block 403, an adjusting hole 404 penetrates through the connecting block 403, an adjusting rod 405 penetrates through the adjusting hole 404, and the lower end of the adjusting rod 405 is connected with the fixed seat 1 through a connecting rod 406; due to the arrangement of the adjusting hole 404 and the adjusting rod 405, the tensioning sleeve 401 and the adjusting rod 405 can move relatively through the connecting block 403; the periphery cover of adjusting pole 405 above adjusting hole 404 is equipped with tensioning spring 407, and when tensioning spring 407 was compressed or tensile, tensioning spring 407 acted on connecting block 403, and then drove tensioning sleeve 401 through connecting block 403 and move, and then tensioning sleeve 401 drives through back shaft 2 and cleans subassembly 3 and move to the distance of adjustment cleaning blade 303 to belt 5.

The upper end of the adjusting rod 405 is connected with an adjusting nut 408 in a threaded manner, the adjusting nut 408 can be adjusted in position on the adjusting rod 405 by rotating the adjusting nut 408, the tensioning spring 407 is further compressed, and finally the distance from the cleaning blade 303 to the belt 5 is adjusted, so that the cleaning effect of the cleaning blade 303 is optimal. Specifically, two adjusting nuts 408 are provided, one of which is a left-handed locknut, and the other is a right-handed locknut. The locknuts of two types that set up can prevent that the sweeper is not hard up in the use, guarantees the more stable work of sweeper.

When the distance between the cleaning blade 303 and the belt 5 needs to be adjusted, the adjusting nut 408 is rotated to compress the tensioning spring 407, the tensioning spring 407 drives the tensioning sleeve 401 to rotate through the connecting block 403, the tensioning sleeve 401 drives the cleaning assembly 3 to synchronously rotate through the supporting shaft 2, so as to adjust the distance between the cleaning blade 303 and the surface of the belt 5, and further adjust the cleaning effect of the cleaning blade 303 on the belt 5, so as to meet the requirement of on-site production.

Example two

Because the knife edge of the cleaning blade 303 needs to be in contact with the upper surface of the belt 5 in order to ensure the cleaning effect of the cleaning blade 303 on the belt 5, the closer the knife edge is in contact with the upper surface of the belt 5, the better the cleaning effect is; however, the belt 5 generally has a belt buckle joint or a cold joint after installation or replacement, when the joint of the type passes through the cleaner, the joint and the cleaner generate relative extrusion movement, after the belt runs for a long time, the cleaner and the joint are worn, and when the belt runs for a long time, the cleaner can cause joint tripping, peeling and the like, so that potential safety production hazards exist. Therefore, the related structure of the device is further improved in order to protect the belt joint and the sweeper.

As shown in fig. 4-7, the adjusting lever 405 is provided with an adjusting assembly 6, the adjusting assembly 6 includes an electromagnetic part 601 screwed with the adjusting lever 405, and the electromagnetic part 601 can be rotated to adjust its position on the adjusting lever 405; a permanent magnet part 602 corresponding to the electromagnetic part 601 is sleeved on the adjusting rod 405, and the permanent magnet part 602 is connected with the upper end part of the tension spring 407 through a connecting part 603; the size and the direction of the current led into the electromagnetic part 601 are controlled by the controller, the electromagnetic part 601 can be controlled to control the magnetic attraction or the magnetic repulsion of the permanent magnetic part 602, the tensioning spring 407 is elastically deformed, and then the cleaning component 3 is driven to move by the tensioning component 4 and the supporting shaft 2, so that the distance between the cleaning blade 303 and the belt 5 is adjusted, and the cleaning effect of the cleaning blade 303 is adjusted.

When the device is installed, the adjusting nut 408 is rotated to a specified position, the permanent magnet part 601 is also adjusted to the specified position, a certain distance is reserved between the electromagnetic part 601 and the permanent magnet part 602, then a first current is introduced into the electromagnetic part 601 through the controller, so that a magnetic repulsion force is generated between the electromagnetic part 601 and the permanent magnet part 602, the permanent magnet part 602 compresses the tensioning spring 407 through the connecting part 603, and the tensioning spring 407 drives the cleaning blade 303 to rotate to the first position through the tensioning assembly 4 and the supporting shaft 2; specifically, when the cleaning blade 303 rotates to the first position, the edge portion of the cleaning blade 303 is in clearance fit with the surface of the belt 5, that is, the cleaning blade 303 does not directly contact the surface of the belt 5.

After the cleaning blade 303 reaches the first position, a second current is introduced into the electromagnetic part 601 through the controller, the second current is larger than the first current, so that the electromagnetic part 601 generates magnetic repulsion force on the permanent magnetic part 602 to increase, the tensioning spring 407 is further compressed, and the tensioning spring 407 drives the cleaning blade 303 to rotate to the second position through the tensioning assembly 4 and the support shaft 2; specifically, when the cleaning blade 303 rotates to the second position, the edge of the cleaning blade 303 is in pressing contact with the surface of the belt 5, so that the cleaning blade 303 cleans the surface of the belt 5.

In order to protect the belt joint and the cleaning blade 303, a control operation program is arranged in the controller, so that when the cleaning blade 303 performs normal cleaning work, the controller supplies a second current to the electromagnetic part 601, the cleaning blade 303 is located at a second position, and a better cleaning effect is ensured; when the belt joint is about to reach the position of the cleaning blade 303, the controller leads a first current into the electromagnetic part 601, when the belt joint reaches the position of the cleaning blade 303, the belt joint generates a reverse acting force on the cleaning blade 303, and the cleaning blade 303 leaves the second position and moves to the first position or directly moves to the first position; at the moment, the distance between the cleaning blade 303 and the roller below the belt 5 is increased, so that the problem that the belt joint is buckled and separated or a cold-bonded leather is separated due to the fact that the cleaning blade 303 excessively extrudes the belt joint can be prevented, and a good protection effect is achieved on the belt joint; on the other hand, the backward extrusion force of the belt joint to the cleaning blade 303 can be reduced, so that the cleaning blade 303 is prevented from being excessively worn by the belt joint; even if cleaning blade 303 leaves the second position after, still can connect and the follow-up belt that moves comes contact with the flat belt, guarantee to clean blade 303 and leave after the second position, still can clean remaining object on belt joint and the belt, guarantee the lasting effect of cleaning of sweeper.

Specifically, the length and the running speed of the belt 5 are measured, and the time for one rotation of the belt 5 is calculated to be T, wherein T is L/v, L is the length of the belt 5, and v is the moving speed of the belt 5; in the time T of one rotation of the belt 5, the time for the controller to apply the second current to the electromagnetic part 601 is T1, and the time for the controller to apply the first current to the electromagnetic part 601 is T2, where T is T1+ T2; in a time period t1, the controller leads a second current into the electromagnetic part 601 to enable the cleaning blade 303 to be located at a second position, so that a better cleaning effect is ensured; in a period t2, the controller applies a first current to the electromagnetic part 601, the joint part of the belt 5 passes through the position of the cleaning blade 303, when the belt joint reaches the position of the cleaning blade 303, the belt joint generates a reverse acting force on the cleaning blade 303, and the cleaning blade 303 leaves the second position and moves towards the first position or directly moves to the first position, so that the belt joint and the cleaning blade 303 are protected; after the belt joint leaves the position of the cleaning blade 303, the controller passes a second current into the electromagnetic part 601, so that the cleaning blade 303 returns to the second position again, and the cleaning work with a good effect on the belt 5 is continued.

EXAMPLE III

After the cleaner is used for a long time, the edge of the cleaning blade 303 is worn, so that the distance between the cleaning blade 303 and the surface of the belt 5 is increased, a part of objects remained on the belt 5 cannot be cleaned, and the cleaning effect of the cleaner is greatly reduced; in order to ensure the cleaning effect of the cleaner, a maintainer generally arrives at a production site and uses a tool to rotate the adjusting nut 408, so that the adjusting nut 408 further compresses the tensioning spring 407, and finally the cleaning blade 303 is further pressed on the belt 5 to achieve the expected cleaning effect; but this kind of regulation mode needs the maintainer to regularly adjust, and the operation is inconvenient, increases maintainer work load. Therefore, the structure of the present apparatus is further optimized based on the second embodiment.

Specifically, after adjusting nut 408 in order to reach the position that cleaning blade 303 was adjusted initially, through making the controller increase the electric current that lets in permanent magnetism portion 602 according to the time cycle of predetermineeing, in order to increase the magnetic force of electromagnetism portion 601, further make the magnetic repulsion increase between electromagnetism portion 601 and the permanent magnetism portion 602, in order to make permanent magnetism portion 602 further compress tensioning spring 407, tensioning spring 407 drives tensioning sleeve 401 through connecting block 403 and rotates, tensioning sleeve 401 drives through back shaft 2 and cleans subassembly 3 synchronous revolution, in order to further adjust the distance between cleaning blade 303 and the belt 5 surface, improve the clearance effect of cleaning blade 303 to belt 5 after the wearing and tearing. Through the cooperation of adjusting nut 408 and electromagnetism portion 601, permanent magnetism portion 602 for adjusting nut 408 and electromagnetism portion 601, permanent magnetism portion 602 cooperate each other in order to cleaning blade 303's regulation, so realized adjusting the self-adaptation degree of sweeper adjustment, reduced the manual work volume.

Example four

In the production process, because the long-time use of belt causes the peeling and delaminating condition to appear after wearing and tearing, the belt layer of peeling has the risk of being blocked between belt and sweeper in process sweeper department, often also has the thing piece or debris card of transportation to block between belt and sweeper in addition, when above-mentioned condition appearing, if can not discover in time to handle, often can cause the condition of belt fish tail or tear the area, causes whole belt to scrap, leads to great economic loss. Therefore, the above problems need to be emphasized in the use of the sweeper. In order to avoid the belt damage risk, the device is further improved.

Specifically, as shown in fig. 8-9, the lower end of the tension spring 407 is fixedly connected to the connecting block 403, so that when the tension spring 407 is stretched, the connecting block 403 is driven to move, and then the tension sleeve 401 is driven to rotate reversely by the connecting block 403, and the tension sleeve 401 drives the cleaning assembly 3 to rotate synchronously and reversely by the supporting shaft 2, so as to increase the distance between the cleaning blade 303 and the surface of the belt 5, and to make the cleaning blade 303 away from the belt 5.

A pressure sensor is provided in the connecting portion 603, and is used for detecting whether a peeled belt layer, a material block, foreign matter, or the like is caught between the cleaning blade 303 and the belt 5. During normal operation of the sweeper, the sweeping blade 303 is in the second position, the acting force of the belt 5 and the residual objects on the sweeping blade 303 is generally in a fixed range, and the pressure value of the sweeping blade 303 acting on the pressure sensor through the sweeping assembly 3, the supporting shaft 2, the tensioning assembly 4 and other related components and finally through the tensioning spring 407 is also in a fixed range; when the pressure value detected by the pressure sensor exceeds the preset range, it indicates that an object is clamped between the cleaning blade 303 and the belt 5, at this time, the controller changes the direction of the current led into the electromagnetic part 601, so that magnetic attraction is generated between the electromagnetic part 601 and the permanent magnetic part 602, and the permanent magnetic part 602 drives the cleaning blade 303 to rotate to a third position through the tension spring 407, the connecting block 403, the tension sleeve 401 and the support shaft 2; when the cleaning blade 303 is in the third position, the edge portion of the cleaning blade 303 is in clearance fit with the surface of the belt 5. The width of the gap between the edge portion of the cleaning blade 303 and the surface of the belt 5 when the cleaning blade 303 is in the third position is larger than the width of the gap between the edge portion of the cleaning blade 303 and the surface of the belt 5 when the cleaning blade 303 is in the first position. As the gap between the cleaning blade 303 and the belt 5 increases, the foreign matter caught between the cleaning blade 303 and the belt 5 is gradually knocked off by its own weight or by objects remaining on the subsequent belt 5. After the controller changes the direction of the current flowing into the electromagnetic part 601 and keeps the current flowing into the electromagnetic part 601 for a time period t3, the controller controls to flow a second current into the electromagnetic part 601, so that the cleaning blade 303 returns to the second position again to clean the belt 5 continuously.

If the pressure value detected by the pressure sensor still exceeds the preset range after the cleaning blade 303 returns to the second position, which indicates that the sundries are not fallen off, at this time, the controller changes the direction of the current led to the electromagnetic part 601 again, so that a magnetic attraction force is generated between the electromagnetic part 601 and the permanent magnetic part 602, and the permanent magnetic part 602 drives the cleaning blade 303 to rotate to the third position through the tension spring 407, the connecting block 403, the tension sleeve 401 and the support shaft 2, so as to follow the above-mentioned manner until the sundries clamped between the cleaning blade 303 and the belt 5 fall off by the self-weight or by being gradually impacted by the object remaining on the subsequent belt 5. On the other hand, once the pressure value that pressure sensor detected surpasss and presets the scope after, the controller sends alarm signal, and the warning maintainer arrives the scene, and whether the inspection has the belt peeling and delaminating problem, perhaps whether the belt has the fish tail problem to and discharge the potential safety hazard of falling in time, guarantee belt conveyor normal production.

In summary, by providing the electromagnetic portion 601 and the permanent magnetic portion 602, controlling the magnitude of the magnetic repulsion or magnetic attraction between the two, and cooperating with the adjusting nut 408, the tension spring 407, the pressure sensor, and other components, on one hand, the cleaning blade 303 can effectively clean the residue on the surface of the belt 5 when located at the second position; on the other hand, when the belt joint reaches the position of the cleaning blade 303, the cleaning blade 303 is enabled to leave the second position and move to the first position, or directly move to the first position, so that the problem that the belt joint is buckled and separated or the cold-bonded patch skin falls off due to excessive extrusion of the cleaning blade 303 on the belt joint can be effectively prevented, and a better protection effect is achieved on the belt joint; when the pressure value detected by the pressure sensor exceeds the preset range, the cleaning blade 303 is rotated to the third position, and as the gap between the cleaning blade 303 and the belt 5 is increased, sundries clamped between the cleaning blade 303 and the belt 5 are gradually impacted and fall off by the subsequent objects on the belt 5 or by the dead weight; through the mutually supporting and the collaborative work of above-mentioned each part, can play effectual guard action to the joint of belt, can also prevent effectively simultaneously that the belt from skinning and pulling or by debris fish tail, play effectual guard action to the belt, guarantee the normal safety in production of belt conveyor.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.