Automatic deviation rectifying type conveying belt

Abstract

The invention discloses an automatic deviation rectifying type conveying belt, which belongs to the technical field of deviation rectifying of conveying belts and comprises a rack, a driven roller, a driving roller and a conveying belt wound among the rack, the driven roller and the driving roller. Two ends of the driven roller are arranged on the rack through a sliding seat; a tensioning rod is arranged between the sliding seat and the rack; a deviation rectifying mechanism is arranged between the right sliding seat and the tensioning rod, comprises a lead screw nut, a gear shifting transmission and the like, and can drive the right sliding seat to move back and forth; deviation detecting mechanisms are arranged between the left sliding seat and the conveying belt and between the right sliding seat and the conveying belt respectively, when the conveying belt deviates, the corresponding triggering mechanisms work, the deviation correcting mechanisms drive the right sliding seat to slide, and therefore the deviation condition of the conveying belt is corrected. When the conveying belt deviates, the deviation rectifying mechanism can automatically rectify and return the conveying belt, the intervention is rapid, the deviation rectifying precision is high, and the automation degree is high; in the whole deviation rectifying process, power is transmitted through the driven roller, additional energy supply is not needed, and the later application cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of conveyor belt deviation rectification, and specifically relates to an automatic deviation rectification type conveyor belt. Background Art

[0002] When the conveyor belt is too long, it is prone to deviation. For example, for the manure belt at the bottom of the chicken cage in the breeding farm, due to the wide belt surface of the manure belt, the chicken manure does not fall regularly. When a large amount of chicken manure falls to the left side of the manure belt, the right side of the manure belt has a large tension due to excessive weight, and at this time, the manure belt will gradually deviate to the left; similarly, when a large amount of chicken manure falls to the right side of the manure belt, at this time, the manure belt will gradually deviate to the right.

[0003] At present, when the conveyor belt deviates, the tension and balance of the conveyor belt on the left and right are mainly adjusted manually, which has problems such as intervention lag, low precision, and excessive dependence on manual intervention. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an automatic deviation rectification type conveyor belt with automatic deviation rectification and high-precision deviation rectification.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An automatic deviation rectification type conveyor belt includes a frame, a driven roller horizontally arranged at the front end of the frame, and a driving roller horizontally arranged at the rear end of the frame. A conveyor belt is wound between the driving roller and the driven roller; the left and right ends of the driven roller are respectively installed on the frame through sliding seats that can slide back and forth, and a tension screw rod capable of driving the sliding seat to slide back and forth is provided between each sliding seat and the frame; a deviation rectification mechanism capable of driving the right sliding seat to move forward or backward is installed between the right sliding seat and the right tension screw rod.

[0007] The deviation rectification mechanism includes a lead screw nut rotatably connected to the right tension screw rod, a shift transmission capable of driving the lead screw nut to rotate forward and backward, a driving sprocket for power output is installed at the right end of the driven roller, and the shift transmission is provided with a driven sprocket power-connected to the driving sprocket; a left trigger mechanism capable of detecting the left deviation of the conveyor belt is arranged between the left sliding seat and the conveyor belt; a right trigger mechanism capable of detecting the right deviation of the conveyor belt is arranged between the right sliding seat and the conveyor belt.

[0008] By adopting the above scheme, when the conveyor belt deviates, the correction mechanism can automatically correct the conveyor belt to return to its original position; for example, when the conveyor belt deviates to the left, it can resist the action of the left trigger mechanism, and then the correction mechanism is linked to drive the right slide to slide backward and correct the conveyor belt to return to the right; for example, when the conveyor belt deviates to the right, it can resist the action of the right trigger mechanism, and then the correction mechanism is linked to drive the right slide to slide forward and correct the conveyor belt to return to the left; the entire correction process has rapid intervention, high correction accuracy and high degree of automation; and the entire correction process transmits power through the driven roller, without the need for additional energy supply, and its later application cost is relatively low.

[0009] Preferably, when the conveyor belt deviates to the left, the left trigger mechanism will be triggered, and the left trigger mechanism is configured to include a left trigger baffle whose rear end is rotatably mounted on the inner side surface of the left slide, and the front end of the left trigger baffle is fixed with a left guide rod which is laterally arranged and movably passes through the left slide, and the left guide rod is mounted with a left spring which pushes the left trigger baffle to rotate to the right; when the conveyor belt deviates to the right, the right trigger mechanism will be triggered, and the right trigger mechanism is configured to include a right trigger baffle whose rear end is rotatably mounted on the inner side surface of the right slide, and the front end of the right trigger baffle is fixed with a right guide rod which is laterally arranged and movably passes through the right slide, and the right guide rod is mounted with a right spring which pushes the right trigger baffle to rotate to the left.

[0010] Preferably, in order to realize the shifting during the deviation correction, the shifting transmission is configured to include a synchronizer fixed on the inner side of the right slide seat; the right side of the synchronizer is concentrically connected to a clutch fixed on the outer side of the right slide seat, wherein the driven sprocket is concentrically connected to the clutch; the internal transmission of the synchronizer is equipped with a longitudinally arranged shift fork, and the front end of the shift fork is equipped with a reducer, wherein the lead screw nut is installed in the reducer; a shift lever matching the shift fork is movably installed on the upper side of the synchronizer;

[0011] Among them, a horizontal pull rod is movably connected between the left trigger baffle and the right trigger baffle, and a tension rod 1 which is vertically arranged and close to the lever handle is fixed inside the pull rod; the lever handle is fixed to the rod end of the shift lever, and a shift rope with a fixed length is connected between the lever handle and the right slide seat, and a tension spring 1 connected to the synchronizer housing is hung at the front end of the lever handle, and the shift rope is always pulled to a tensioned state by the tension spring 1 with the tension rod 1 as the inflection point; wherein the shift rope is a flexible non-elastic rope;

[0012] Among them, a group of active bevel gears and two groups of driven bevel gears distributed in front and behind the active bevel gears and meshing with the active bevel gears are rotatably installed in the synchronizer; the output shaft of the clutch is concentrically connected to the active bevel gear, and the shift fork is concentrically meshed with the driven bevel gear.

[0013] When the conveyor belt deviates to the left and hits the left trigger baffle, the pull rod moves to the left accordingly. Under the action of the tension force, the shift rope pulls the lever handle to rotate backward. At this time, the shift lever drives the shift fork to mesh with the rear driven bevel gear, that is, the shift lever enters the reverse gear. At this time, the shift fork drives the lead screw nut in the reducer to drive the right slide to slide backward and correct the conveyor belt to return to the right position.

[0014] When the conveyor belt deviates to the right and hits the right trigger baffle, the pull rod moves to the right accordingly. Under the action of the tension force, the shift rope pulls the lever handle to rotate forward. At this time, the shift lever drives the shift fork to mesh with the driven bevel gear in front, that is, the shift lever enters the forward gear. At this time, the shift fork drives the lead screw nut in the reducer to drive the right slide forward and correct the conveyor belt to return to the left.

[0015] When the conveyor belt does not deviate, the pull rod does not move. At this time, the shift fork is neither engaged with the front driven bevel gear nor with the rear driven bevel gear, that is, the shift lever enters neutral, and the screw nut does not move.

[0016] Preferably, in order to ensure the operation of the gear-shifting transmission, the clutch is configured to include an output shaft that is concentrically connected to the active bevel gear, a reducing disk that can change diameter and has a cutout on the side is concentrically connected to the output shaft, a constant-diameter disk is coaxially rotated on the reducing disk, the constant-diameter disk is concentrically connected to the driven sprocket, and the driven sprocket is connected to the active sprocket through a chain; a pressing block is rotatably installed at the bottom of the right slide, and the top of the pressing block is always tightened by a tension spring 2 connected to the right slide and always contacts the side of the reducing disk;

[0017] Among them, a tensioning seat is fixed on the outer side surface of the right sliding seat, and a clutch pull rope of a fixed length is connected between the tensioning seat and the clamping block, and a vertically arranged tensioning rod 2 is fixed in the tensioning seat, and the clutch pull rope is always pulled to a tensioned state by a tension spring 2 with the tensioning rod 2 as the inflection point; wherein the clutch pull rope is a flexible non-elastic rope; a tensioning push rod is fixed on the right end of the pull rod and is vertically arranged and passes through the outside of the right sliding sleeve, and the tensioning push rod is located on the right side of the clutch pull rope; a tensioning push hole is opened at the right end of the right guide rod, and the clutch pull rope passes through the tensioning push hole.

[0018] When the conveyor belt deviates to the left and hits the left trigger baffle, the pull rod moves to the left, the tension push rod contacts the clutch rope and changes the tension of the clutch rope. At this time, the clamping block is separated from the cutout of the output disk, and the output disk rotates synchronously with the driven sprocket through friction under the resistance of the clamping block;

[0019] When the conveyor belt deviates to the right and hits the right trigger baffle, the pull rod moves to the right, the tensioning push hole contacts the clutch rope and changes the tension of the clutch rope. At this time, the clamping block is separated from the cutout of the output disk, and the output disk rotates synchronously with the driven sprocket through friction under the resistance of the clamping block;

[0020] When the conveyor belt is not deflected, the tensioning push rod 1 and the tensioning push hole do not contact the clutch pull rope. At this time, the pressing block abuts against the notch of the output disk, and the output disk does not rotate synchronously with the driven sprocket, that is, the driven sprocket idles at this time.

[0021] Preferably, in order to transmit the power to the lead screw nut in a decelerated manner, the reducer is set to include a housing fixed to the right sliding seat. Inside the housing, a first-stage reduction gear concentrically docked with the shift fork, a second-stage reduction gear meshing with the first-stage reduction gear, and a third-stage reduction gear meshing with the second-stage reduction gear are rotatably installed. The lead screw nut is concentrically fixed inside the third-stage reduction gear; among them, the diameters of the first-stage reduction gear, the second-stage reduction gear, and the third-stage reduction gear increase in sequence.

[0022] Preferably, in order to facilitate the adjustment of the tension state of the driven roller on the conveyor belt, a screw rod adjuster for controlling the rotation or fixation of the left tensioning screw rod is installed at the front end of the left frame; the screw rod adjuster includes a positioning disk fixed to the front end of the left frame, and a plurality of uniformly circumferentially arrayed limiting blocks are fixed to the front of the positioning disk. There is a limiting groove between every two adjacent limiting blocks; the front end of the left tensioning screw rod is concentrically fixed with an adjusting rotating rod with a non-circular cross-section. An adjusting rotating sleeve that can only slide axially on it is sleeved on the adjusting rotating rod, and an adjusting rocker that can be placed in the limiting groove is connected to the outside of the adjusting rotating sleeve; among them, the diameter of the adjusting rocker is equal to the width of the limiting groove, and the adjusting rocker and the limiting groove are in interference fit. When controlling the rotation of the left tensioning screw rod, take out the adjusting rocker in the limiting groove, and the rotation of the left tensioning screw rod can be controlled by rotating the adjusting rocker, that is, the left sliding seat can be driven to slide to adjust the conveyor belt tension. After the left sliding seat is adjusted, the right sliding seat will be automatically leveled by the deviation rectifying mechanism; when fixing the left tensioning screw rod, assemble the adjusting rocker into the limiting groove, and at this time the left tensioning screw rod is fixed by the positioning disk.

[0023] The beneficial effects of the present invention are as follows: By setting the deviation rectifying mechanism, the present invention can automatically correct the deviation and return the conveyor belt, with rapid intervention, high deviation rectifying accuracy, and high automation degree, effectively solving the problems of lagging intervention, low accuracy, and excessive dependence on manual intervention in the existing conveyor belt deviation rectifying methods; the entire deviation rectifying process transmits power through the driven roller without other energy consumption, and its later application cost is relatively low; the entire structure is reasonably designed, and the cooperation between various components is tight, which can stably and reliably realize the automatic deviation rectifying function of the conveyor belt, with high practicability and popularization value; using the screw rod adjuster can adjust the tension state of the driven roller on the conveyor belt, that is, the left sliding seat can be driven to slide to adjust the conveyor belt tension. After the left sliding seat is adjusted, the right sliding seat will be automatically leveled by the deviation rectifying mechanism, which is more convenient in application. Description of the Drawings

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0025] Figure 1 is the three-dimensional structure of the automatic deviation-correcting conveyor belt Figure 1 ;

[0026] Figure 2 is for hiding Figure 1 the three-dimensional structure diagram after hiding the conveyor belt in

[0027] Figure 3 is the three-dimensional structure of the automatic deviation-correcting conveyor belt Figure 2 ;

[0028] Figure 4 is the front view of the automatic deviation-correcting conveyor belt;

[0029] Figure 5 is Figure 1 the three-dimensional structure diagram of the deviation-correcting mechanism in

[0030] Figure 6 is Figure 5 the partial enlarged view at A in

[0031] Figure 7 is Figure 5 the three-dimensional structure diagram of the left trigger mechanism in

[0032] Figure 8 is Figure 6 the three-dimensional structure diagram of the right trigger mechanism in

[0033] Figure 9 is Figure 6 the three-dimensional structure diagram of the shift transmission in

[0034] Figure 10 is Figure 9 the internal structure diagram of the synchronizer in

[0035] Figure 11 is Figure 6 the three-dimensional structure diagram of the transmission between the driving sprocket and the driven sprocket in

[0036] Figure 12 is for hiding Figure 11 the three-dimensional structure diagram after hiding the driven sprocket and the tensioning seat in

[0037] Figure 13 is Figure 11 the three-dimensional structure diagram of the clutch in

[0038] Figure 14 is Figure 6 the three-dimensional structure diagram of the reducer in

[0039] Figure 15 is Figure 4 the three-dimensional structure diagram of the lead screw adjuster in

[0040] Markings in the figure: 1 - frame; 2 - driven roller; 3 - conveyor belt; 4 - sliding seat; 5 - tensioning lead screw; 6 - lead screw nut; 7 - shift transmission; 8 - driving sprocket; 9 - driven sprocket; 10 - left trigger baffle; 11 - left guide rod; 12 - left spring; 13 - right trigger baffle; 14 - right guide rod; 15 - right spring; 16 - synchronizer; 17 - clutch; 18 - shift fork; 19 - reducer; 20 - shift lever; 21 - pull rod; 22 - tensioning rod 1; 23 - shift lever turning handle; 24 - shift pull rope; 25 - tension spring 1; 26 - driving bevel gear; 27 - driven bevel gear; 28 - output shaft; 29 - variable diameter disc; 30 - equal diameter disc; 31 - pressing block; 32 - tension spring 2; 33 - tensioning seat; 34 - clutch pull rope; 35 - tensioning rod 2; 36 - tensioning push rod; 37 - tensioning push hole; 38 - housing; 39 - first-stage reduction gear; 40 - second-stage reduction gear; 41 - third-stage reduction gear; 42 - lead screw adjuster; 43 - positioning disc; 44 - limit block; 45 - limit groove; 46 - adjusting lever; 47 - adjusting sleeve; 48 - adjusting rocker. Specific embodiments

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0042] As Figures 1 to 6 shown, an automatic deviation-correcting conveyor belt is provided, which is used in a farm, for example, for the conveyance of chicken manure, to Figure 3 serve as a reference. Specifically, it includes a frame 1, a driven roller 2 horizontally arranged at the front end of the frame 1, and a driving roller horizontally arranged at the rear end of the frame 1. A conveyor belt 3 is wound between the driving roller and the driven roller 2. Among them, the driven roller 2 is as Figure 2 shown, the conveyor belt 3 is as Figure 1 shown, and the driving roller is omitted in the figure; as Figure 1 , Figure 3As shown, the left and right ends of the driven roller 2 are respectively mounted on the frame 1 through a slide 4 that can slide forward and backward, and a tensioning screw 5 that can drive the slide 4 to slide forward and backward is provided between each slide 4 and the frame 1; a correction mechanism that can drive the right slide 4 to move forward or backward is installed between the right slide 4 and the right tensioning screw; Figures 5 to 6 As shown, the deviation correction mechanism includes a screw nut 6 rotatably connected to the right tensioning screw, a shift transmission 7 that can drive the screw nut 6 to rotate forward and reversely, a driving sprocket 8 for power output is installed on the right end of the driven roller 2, and the shift transmission 7 is provided with a driven sprocket 9 power-connected to the driving sprocket 8; a left trigger mechanism that can detect the conveyor belt 3 deviation to the left is provided between the left slide 4 and the conveyor belt 3; a right trigger mechanism that can detect the conveyor belt 3 deviation to the right is provided between the right slide 4 and the conveyor belt 3.

[0043] When the conveyor belt 3 deviates, the correcting mechanism can automatically correct the conveyor belt 3 to return to its original position; for example, when the conveyor belt 3 deviates to the left, it can resist the action of the left trigger mechanism, and then the correcting mechanism is linked to drive the right slide to slide backward and correct the conveyor belt 3 to return to the right; for example, when the conveyor belt 3 deviates to the right, it can resist the action of the right trigger mechanism, and then the correcting mechanism is linked to drive the right slide to slide forward and correct the conveyor belt 3 to return to the left; the entire correcting process has rapid intervention, high correction accuracy and high degree of automation; and the entire correcting process transmits power through the driven roller 2, without other energy consumption, and its later application cost is relatively low.

[0044] like Figure 7 As shown, when the conveyor belt 3 deviates to the left, the left trigger mechanism will be triggered. The left trigger mechanism is configured to include a left trigger baffle 10 whose rear end is rotatably mounted on the inner side of the left slide 4, and a left guide rod 11 which is laterally arranged and movably runs through the left slide 4 is fixed to the front end of the left trigger baffle 10. A left spring 12 is mounted on the left guide rod 11 to push the left trigger baffle 10 to rotate to the right; the left trigger baffle 10 is relatively thin, and the left spring 12 will be compressed when the conveyor belt 3 deviates and contacts the left trigger baffle 10.

[0045] like Figure 8 As shown, when the conveyor belt 3 deviates to the right, the right trigger mechanism will be triggered. The right trigger mechanism is configured to include a right trigger baffle 13 whose rear end is rotatably mounted on the inner side of the right slide 4. A right guide rod 14 which is laterally arranged and movably runs through the right slide 4 is fixed to the front end of the right trigger baffle 13. A right spring 15 which pushes the right trigger baffle 13 to rotate to the left is mounted on the right guide rod 14. The right trigger baffle 13 is relatively thin. When the conveyor belt 3 deviates and contacts the right trigger baffle 13, the right spring 15 will be compressed.

[0046] like Figure 9As shown in the figure, in order to achieve gear shifting during deviation correction, the shift transmission 7 is set to include a synchronizer 16 fixed to the inner side surface of the right sliding seat 4; a clutch 17 fixed to the outer side surface of the right sliding seat 4 is concentrically butted on the right side of the synchronizer 16, and the driven sprocket 9 is concentrically butted on the clutch 17; a longitudinally arranged shift fork 18 is installed inside the synchronizer 16 for internal transmission, and a speed reducer 19 is installed at the front end of the shift fork 18, and the lead screw nut 6 is installed inside the speed reducer 19; a shift lever 20 matching the shift fork 18 is movably installed above the synchronizer 16.

[0047] Continue as Figure 9 As shown in the figure, a horizontal pull rod 21 is movably connected between the left trigger baffle 10 and the right trigger baffle 13, and a vertically arranged tension rod 22 close to the lever grip 23 is fixed inside the pull rod 21; a lever grip 23 is fixed at the rod end of the shift lever 20, a shift cable 24 with a fixed length is connected between the lever grip 23 and the right sliding seat 4, and a first tension spring 25 connected to the outer shell of the synchronizer 16 is hung at the front end of the lever grip 23, and the shift cable 24 is always pulled to a tension state by the first tension spring 25 with the tension rod 22 as the inflection point; the shift cable 24 is a flexible non-elastic cable, such as a steel wire rope, etc.

[0048] As Figure 10 As shown in the figure, a set of driving bevel gears 26 are rotatably installed inside the synchronizer 16, and two sets of driven bevel gears 27 distributed in front of and behind the driving bevel gears 26 and meshing with the driving bevel gears 26; the output shaft 28 of the clutch 17 is concentrically butted with the driving bevel gears 26, and the shift fork 18 is concentrically meshed with the driven bevel gears 27; when the shift fork 18 cooperates with different driven bevel gears 27, the shift fork 18 will rotate in different directions.

[0049] When the conveyor belt 3 deviates to the left and hits the left trigger baffle 10, the pull rod 21 moves to the left accordingly, and the shift rope 24 pulls the lever handle 23 to rotate backward under the action of the tension force. At this time, the shift fork 18 is driven by the shift lever 20 to engage with the rear driven bevel gear 27, that is, the shift lever 20 enters the reverse gear. At this time, the shift fork 18 drives the screw nut in the reducer 19 to drive the right slide to slide backward and correct the conveyor belt 3 to return to the right; when the conveyor belt 3 deviates to the right and hits the right trigger baffle 13, the pull rod 21 moves to the right accordingly, and the shift rope 24 is tensioned. Under the action of force, the shift lever handle 23 is pulled forward and rotated. At this time, the shift fork 18 is driven by the shift lever 20 to engage with the front driven bevel gear 27, that is, the shift lever 20 enters the forward gear. At this time, the shift fork 18 drives the screw nut in the reducer 19 to drive the right slide forward and correct the conveyor belt 3 to return to the left; when the conveyor belt 3 is not deviated, the pull rod 21 does not move either. At this time, the shift fork 18 is driven neither to engage with the front driven bevel gear 27 nor to engage with the rear driven bevel gear 27, that is, the shift lever 20 enters the neutral gear, and the screw nut does not move at this time.

[0050] like Figure 11 , Figure 13 As shown, in order to ensure the operation of the gear-shifting transmission, the clutch 17 is configured to include an output shaft 28 that is concentrically connected to the active bevel gear 26, and a variable diameter plate 29 that can change diameter and has a cutout on the side is concentrically connected to the output shaft 28. A constant diameter plate 30 is coaxially rotated on the variable diameter plate 29, and the constant diameter plate 30 is concentrically connected to the driven sprocket 9, and the driven sprocket 9 is connected to the active sprocket 8 through a chain; a pressing block 31 is rotatably installed at the bottom of the right slide, and the top of the pressing block 31 is connected to the right slide by a chain. The tension spring 232 is always tightened and always contacts the side of the variable diameter disk 29; when the clutch 17 is in the disengaged state, the gap between the equal diameter disk 30 and the variable diameter disk 29 is larger, and the equal diameter disk 30 and the driven sprocket 9 do not drive the variable diameter disk 29 to rotate when they rotate; when the clutch 17 is in the combined state, the gap between the equal diameter disk 30 and the variable diameter disk 29 is reduced, and when the equal diameter disk 30 and the driven sprocket 9 rotate, the equal diameter disk 30 drives the variable diameter disk 29 to rotate through the friction force, thereby driving the output shaft 28 to rotate.

[0051] like Figures 11 to 13As shown, a tensioning seat 33 is fixed to the outer side surface of the right sliding seat 4. A clutch pull rope 34 of a fixed length is connected between the tensioning seat 33 and the pressing block 31. A second tensioning rod 35 arranged vertically is fixed inside the tensioning seat 33. The clutch pull rope 34 is always pulled to a tensioned state by a second tension spring 32 with the second tensioning rod 35 as the inflection point; wherein the clutch pull rope 34 is a flexible non-elastic rope; the right end of the pull rod 21 is fixed with a tensioning push rod 36 arranged vertically and penetrating to the outside of the right sliding sleeve. This tensioning push rod 36 is located on the right side of the clutch pull rope 34; a tensioning push hole 37 is formed at the right end head of the right guide rod 14, and the clutch pull rope 34 passes through the tensioning push hole 37.

[0052] When the conveyor belt 3 deflects to the left and abuts against the left trigger baffle 10, the pull rod 21 moves to the left side. The tensioning push rod 36 contacts the clutch pull rope 34 and changes the tension of the clutch pull rope 34. At this time, the pressing block 31 disengages from the notch of the output disk, and the output disk rotates synchronously with the driven sprocket 9 through friction under the abutment of the pressing block 31; when the conveyor belt 3 deflects to the right and abuts against the right trigger baffle 13, the pull rod 21 moves to the right side. The tensioning push hole 37 contacts the clutch pull rope 34 and changes the tension of the clutch pull rope 34. At this time, the pressing block 31 disengages from the notch of the output disk, and the output disk rotates synchronously with the driven sprocket 9 through friction under the abutment of the pressing block 31; when the conveyor belt 3 does not deflect, neither the tensioning push rod 36 nor the tensioning push hole 37 contacts the clutch pull rope 34. At this time, the pressing block 31 abuts against the notch of the output disk, and the output disk does not rotate synchronously with the driven sprocket 9, that is, the driven sprocket 9 idles at this time.

[0053] As Figure 14 As shown, in order to reduce and transmit the power to the lead screw nut 6, the speed reducer 19 is set to include a machine shell 38 fixed to the right sliding seat 4. Inside the machine shell 38, a first-stage reduction gear 39 concentrically docked with the shift fork 18, a second-stage reduction gear 40 meshing with the first-stage reduction gear 39, and a third-stage reduction gear 41 meshing with the second-stage reduction gear 40 are rotatably installed. The lead screw nut 6 is concentrically fixed inside the third-stage reduction gear 41. An internal thread matching with the tensioning lead screw 5 can also be machined inside the third-stage reduction gear 41; wherein, the diameters of the first-stage reduction gear 39, the second-stage reduction gear 40, and the third-stage reduction gear 41 increase in sequence.

[0054] As Figure 15 As shown, in order to facilitate adjusting the tension state of the driven roller 2 on the conveyor belt 3, a screw regulator 42 for controlling the rotation or fixation of the left tensioning lead screw 5 is installed at the front end of the left machine frame 1; the screw regulator 42 includes a positioning disk 43 fixed to the front end of the left machine frame 1. A plurality of limiting blocks 44 evenly distributed in a circumferential array are fixed to the front surface of the positioning disk 43. A limiting groove 45 is provided between every two adjacent limiting blocks 44; the front end of the left tensioning lead screw 5 is concentrically fixed with an adjusting rotating rod 46 with a non-circular cross-section. Figure 14The cross-section of the middle adjusting rod 46 is hexagonal, and it can also be quadrilateral, pentagonal, etc. An adjusting sleeve 47 that can only slide axially is sleeved on the adjusting rod 46. A connecting rod 48 that can be placed in the limiting groove 45 is connected to the outside of the adjusting sleeve 47. Wherein, the diameter of the connecting rod 48 is equal to the width of the limiting groove 45, and an interference fit is provided between the connecting rod 48 and the limiting groove 45. When controlling the rotation of the left tensioning screw rod 5, the connecting rod 48 in the limiting groove 45 is taken out, and by rotating the connecting rod 48, the rotation of the left tensioning screw rod 5 can be controlled, so as to drive the left sliding seat 4 to slide and adjust the tension of the conveyor belt 3. After the left sliding seat 4 is adjusted, the right sliding seat 4 will be automatically leveled by the deviation rectifying mechanism; when fixing the left tensioning screw rod 5, the connecting rod 48 is assembled in the limiting groove 45, and at this time, the left tensioning screw rod 5 is fixed by the positioning disc 43.

[0055] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic deviation-correcting conveyor belt, comprising a frame, a driven roller transversely arranged at the front end of the frame, and a driving roller transversely arranged at the rear end of the frame, wherein a conveyor belt is wound between the driving roller and the driven roller; The left and right ends of the driven roller are respectively mounted on the frame through sliding seats that can slide forward and backward, and a tensioning screw rod that can drive the sliding seat to slide forward and backward is provided between each sliding seat and the frame; It is characterized in that : A deviation correction mechanism capable of driving the right slide to move forward or backward is installed between the right slide and the right tensioning screw; The deviation correction mechanism includes a screw nut rotatably connected to the right tensioning screw, and a shift transmission capable of driving the screw nut to rotate forward and reversely. The right end of the driven roller is equipped with a driving sprocket for power output, and the shift transmission is provided with a driven sprocket connected to the driving sprocket in power. A left trigger mechanism is provided between the left slide and the conveyor belt, which can detect the conveyor belt deviating to the left; when the conveyor belt deviates to the left, it can resist the action of the left trigger mechanism, and then the deviation correction mechanism is linked to drive the right slide to slide backward and correct the conveyor belt to return to the right; A right trigger mechanism is arranged between the right slide and the conveyor belt, which can detect the conveyor belt deviation to the right; when the conveyor belt deviates to the right, it can resist the action of the right trigger mechanism, and then the deviation correction mechanism is linked to drive the right slide to slide forward and correct the conveyor belt to return to the left.

2. The automatic deviation-correcting conveyor belt according to claim 1, wherein: The left trigger mechanism comprises a left trigger baffle plate whose rear end is rotatably mounted on the inner side of the left slide seat, a left guide rod which is arranged transversely and movably penetrates the left slide seat is fixed to the front end of the left trigger baffle plate, and a left spring which pushes the left trigger baffle plate to rotate to the right is mounted on the left guide rod; The right trigger mechanism includes a right trigger baffle whose rear end is rotatably mounted on the inner side of the right slide seat, a right guide rod which is laterally arranged and movably passes through the right slide seat is fixed to the front end of the right trigger baffle, and a right spring which pushes the right trigger baffle to rotate to the left is mounted on the right guide rod.

3. The automatic deviation-correcting conveyor belt according to claim 2, wherein: The gear shift transmission includes a synchronizer fixed on the inner side of the right slide; the right side of the synchronizer is concentrically connected to a clutch fixed on the outer side of the right slide, wherein the driven sprocket is concentrically connected to the clutch; the internal transmission of the synchronizer is installed with a longitudinally arranged shift fork, and the front end of the shift fork is installed with a reducer, wherein the screw nut is installed in the reducer; a shift lever matching the shift fork is movably installed above the synchronizer.

4. The automatic deviation rectifying conveyor belt according to claim 3, characterized in that: A horizontal pull rod is movably connected between the left trigger baffle and the right trigger baffle, and a tension rod 1 vertically arranged and close to the lever handle is fixed inside the pull rod; a lever handle is fixed to the rod end of the shift lever, and a shift rope with a fixed length is connected between the lever handle and the right sliding seat, and a tension spring 1 connected to the synchronizer housing is hung at the front end of the shift lever handle, and the shift rope is always pulled to a tensioned state by the tension spring 1 with the tension rod 1 as the inflection point; the shift rope is a flexible non-elastic rope.

5. The automatic deviation-correcting conveyor belt according to claim 4, wherein: The synchronizer is rotatably mounted with a set of driving bevel gears and two sets of driven bevel gears distributed at the front and rear of the driving bevel gears and meshing with the driving bevel gears; the output shaft of the clutch is concentrically connected to the driving bevel gears, and the shift fork is concentrically meshed with the driven bevel gears; When the conveyor belt deviates to the left and hits the left trigger baffle, the pull rod moves to the left accordingly. Under the action of the tension force, the shift rope pulls the lever handle to rotate backward. At this time, the shift lever drives the shift fork to mesh with the rear driven bevel gear, that is, the shift lever enters the reverse gear. At this time, the shift fork drives the lead screw nut in the reducer to drive the right slide to slide backward and correct the conveyor belt to return to the right position. When the conveyor belt deviates to the right and hits the right trigger baffle, the pull rod moves to the right accordingly. Under the action of the tension force, the shift rope pulls the lever handle to rotate forward. At this time, the shift lever drives the shift fork to mesh with the driven bevel gear in front, that is, the shift lever enters the forward gear. At this time, the shift fork drives the lead screw nut in the reducer to drive the right slide forward and correct the conveyor belt to return to the left. When the conveyor belt does not deviate, the pull rod does not move. At this time, the shift fork is neither engaged with the front driven bevel gear nor with the rear driven bevel gear, that is, the shift lever enters neutral, and the screw nut does not move.

6. The automatic deviation-correcting conveyor belt according to claim 5, wherein: The clutch includes an output shaft that is coaxially connected to the active bevel gear, a reducing disk that can change diameter and has a cutout on the side is coaxially connected to the output shaft, a constant diameter disk is coaxially rotated on the reducing disk, the constant diameter disk is coaxially connected to the driven sprocket, and the driven sprocket is connected to the active sprocket through a chain; a clamping block is rotatably installed at the bottom of the right slide, and the top of the clamping block is always tightened by a tension spring 2 connected to the right slide and always contacts the side of the reducing disk.

7. The automatic deviation-correcting conveyor belt according to claim 6, wherein: A tensioning seat is fixed on the outer side of the right sliding seat, a clutch pull rope of fixed length is connected between the tensioning seat and the pressing block, a vertically arranged tensioning rod 2 is fixed in the tensioning seat, and the clutch pull rope is always pulled to a tensioned state by the tension spring 2 with the tensioning rod 2 as the inflection point; wherein the clutch pull rope is a flexible non-elastic rope; a tensioning push rod which is vertically arranged and passes through the outer side of the right sliding sleeve is fixed to the right end of the pull rod, and the tensioning push rod 1 is located on the right side of the clutch pull rope; a tensioning push hole is opened at the right end of the right guide rod, and the clutch pull rope passes through the tensioning push hole; When the conveyor belt deviates to the left and hits the left trigger baffle, the pull rod moves to the left, the tension push rod contacts the clutch rope and changes the tension of the clutch rope. At this time, the clamping block is separated from the cutout of the output disk, and the output disk rotates synchronously with the driven sprocket through friction under the resistance of the clamping block; When the conveyor belt deviates to the right and hits the right trigger baffle, the pull rod moves to the right, the tensioning push hole contacts the clutch rope and changes the tension of the clutch rope. At this time, the clamping block is separated from the cutout of the output disk, and the output disk rotates synchronously with the driven sprocket through friction under the resistance of the clamping block; When the conveyor belt is not deflected, the tensioning push rod 1 and the tensioning push hole do not contact the clutch rope. At this time, the clamping block abuts against the cutout of the output disk, and the output disk does not rotate synchronously with the driven sprocket, that is, the driven sprocket is idling at this time.

8. The automatic deviation-correcting conveyor belt according to claim 3, characterized in that: The speed reducer includes a housing fixed to the right sliding seat. Inside the housing, a first-stage reduction gear concentrically docked with a shift fork, a second-stage reduction gear meshing with the first-stage reduction gear, and a third-stage reduction gear meshing with the second-stage reduction gear are rotatably installed. The lead screw nut is concentrically fixed inside the third-stage reduction gear. Among them, the diameters of the first-stage reduction gear, the second-stage reduction gear, and the third-stage reduction gear increase in sequence.

9. The automatic deviation-correcting conveyor belt according to any one of claims 1-8, characterized in that: A lead screw regulator for controlling the rotation or fixation of the left tensioning lead screw is installed at the front end of the left frame. The lead screw regulator includes a positioning disc fixed to the front end of the left frame. A plurality of limiting blocks evenly distributed in a circumferential array are fixed to the front of the positioning disc. A limiting groove is provided between every two adjacent limiting blocks. The front end of the left tensioning lead screw is concentrically fixed with an adjusting rotating rod with a non-circular cross-section. An adjusting rotating sleeve that can only slide axially on the adjusting rotating rod is sleeved on the adjusting rotating rod. An adjusting rocker that can be placed in the limiting groove is connected to the outside of the adjusting rotating sleeve.

10. The automatic deviation-correcting conveyor belt according to claim 9, wherein: The diameter of the adjusting rocker is equal to the width of the limiting groove, and the adjusting rocker and the limiting groove are in interference fit.

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