Dual-linkage conveyor belt automatic correction assembly

Abstract

This utility model discloses a double-linkage conveyor belt automatic correction assembly, belonging to the field of conveyor belt correction technology. It includes a frame, driven rollers, driving rollers, and a conveyor belt wound around them. The driven rollers are mounted on the frame at both ends via slides, with a tension rod between the slides and the frame. A correction mechanism is located between the right slide and the tension rod, including a lead screw nut and a gear shifter, which drives the right slide to move back and forth. Detection mechanisms for belt deviation are respectively installed between the left and right slides and the conveyor belt. When the conveyor belt deviates, the corresponding trigger mechanism operates, and the correction mechanism drives the right slide to slide, thereby correcting the belt deviation. When the conveyor belt deviates, the correction mechanism can automatically correct and return the conveyor belt to its original position. It features rapid intervention, high correction accuracy, and a high degree of automation. The entire correction process transmits power through the driven rollers, requiring no additional energy supply, resulting in low application costs.

Description

Technical Field

[0001] This utility model relates to the field of conveyor belt correction technology, specifically a dual-linkage conveyor belt automatic correction assembly. Background Technology

[0002] When the conveyor belt is too long, it is prone to deviation. For example, in the manure conveyor belt used at the bottom of chicken cages in a poultry farm, because the belt is wide, the chicken manure falls irregularly. When a large amount of chicken manure falls to the left side of the belt, the tension on the right side increases due to the excessive weight, and the belt will gradually deviate to the left. Similarly, when a large amount of chicken manure falls to the right side of the belt, it will gradually deviate to the right.

[0003] Currently, when a conveyor belt deviates from its designated path, the tension and balance of the belt on the left and right sides are mainly adjusted manually. However, this method suffers from problems such as delayed intervention, low precision, and excessive reliance on manual intervention. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an automatic correction assembly for a double-linkage conveyor belt with automatic correction and high-precision correction.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An automatic belt alignment assembly for a double-linkage conveyor belt includes a frame, a driven roller laterally positioned at the front end of the frame, and a driving roller laterally positioned 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 mounted on the frame via sliding blocks that can slide back and forth. Each sliding block is provided with a tension screw between itself and the frame, which can drive the sliding block to slide back and forth. A belt alignment mechanism is installed between the right sliding block and the right tension screw, which can drive the right sliding block to move forward or backward.

[0007] The correction mechanism includes a screw nut rotatably connected to the right tension screw, a gear shifter that can drive the screw nut to rotate forward and backward, a drive sprocket for power output installed at the right end of the driven roller, and a driven sprocket that is poweredly connected to the drive sprocket in the gear shifter; a left triggering mechanism that can detect the conveyor belt running to the left is provided between the left slide and the conveyor belt; and a right triggering mechanism that can detect the conveyor belt running to the right is provided between the right slide and the conveyor belt.

[0008] By adopting the above scheme, when the conveyor belt deviates from its designated position, the correction mechanism can automatically correct and return the conveyor belt to its original position. For example, when the conveyor belt deviates to the left, it can trigger the left trigger mechanism, which in turn drives the right slide table to slide backward and corrects the conveyor belt to return to its right position. Similarly, when the conveyor belt deviates to the right, it can trigger the right trigger mechanism, which in turn drives the right slide table to slide forward and corrects the conveyor belt to return to its left position. The entire correction process is characterized by rapid intervention, high correction accuracy, and a high degree of automation. Moreover, the entire correction process transmits power through the driven roller, eliminating the need for additional energy supply and resulting in lower application costs in the later stages.

[0009] Preferably, when the conveyor belt shifts to the left, the left triggering mechanism is triggered. The left triggering mechanism is configured to include a left triggering baffle rotatably mounted on the inner side of the left slide at its rear end. A left guide rod, which is horizontally arranged and movably passes through the left slide, is fixed at the front end of the left triggering baffle. A left spring, which pushes the left triggering baffle to rotate to the right, is fitted on the left guide rod. When the conveyor belt shifts to the right, the right triggering mechanism is triggered. The right triggering mechanism is configured to include a right triggering baffle rotatably mounted on the inner side of the right slide at its rear end. A right guide rod, which is horizontally arranged and movably passes through the right slide, is fixed at the front end of the right triggering baffle. A right spring, which pushes the right triggering baffle to rotate to the left, is fitted on the right guide rod.

[0010] Preferably, in order to achieve shifting during correction, the shift transmission is configured to include a synchronizer fixed to the inner side of the right slide block; a clutch fixed to the outer side of the right slide block is concentrically connected to the right side of the synchronizer, wherein the driven sprocket is concentrically connected to the clutch; a longitudinally arranged shift fork is installed inside the synchronizer, and a reducer is installed at the front end of the shift fork, wherein the lead screw nut is installed inside the reducer; a shift lever matching the shift fork is movably installed above the synchronizer.

[0011] A horizontal pull rod is movably connected between the left and right trigger baffles. Inside the pull rod is a vertically positioned tension rod near the shift lever handle. The shift lever handle is fixed to the end of the lever. A shift rope of fixed length is connected between the shift lever handle and the right slide block. A tension spring connected to the synchronizer housing is attached to the front end of the shift lever handle. The shift rope is always stretched to a taut state by the tension spring, with the tension rod handle as the inflection point. The shift rope is a flexible, non-elastic rope.

[0012] The synchronizer contains a set of driving bevel gears and two sets of driven bevel gears distributed in front of and behind 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.

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

[0014] When the conveyor belt shifts to the right and touches the right trigger baffle, the pull rod moves to the right. Under the action of tension, the shift rope pulls the lever handle to rotate forward. At this time, the shift lever moves 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 screw nut in the reducer to drive the right slide table to slide forward and correct the conveyor belt to return to the left.

[0015] When the conveyor belt does not deviate, the lever does not move. At this time, the shift fork will not engage with either the front driven bevel gear or the rear driven bevel gear, meaning the shift lever is in neutral. At this time, the screw nut will not move.

[0016] Preferably, to ensure the operation of the shift transmission, the clutch is configured to include an output shaft concentrically connected to the driving bevel gear, a variable diameter disc concentrically connected to the output shaft with a side slit, an equal diameter disc rotatably connected to the variable diameter disc, the equal diameter disc concentrically connected to the driven sprocket, the driven sprocket being connected to the driving sprocket via a chain; a clamping block is rotatably mounted at the bottom of the right slide, the top of the clamping block being constantly tensioned by a tension spring connected to the right slide and always abutting against the side of the variable diameter disc;

[0017] The right slide block has a tensioning seat fixed to its outer side. A clutch rope of a fixed length is connected between the tensioning seat and the clamping block. A vertically arranged tensioning rod is fixed inside the tensioning seat. The clutch rope is always pulled to a tensioned state by the tension spring with the tensioning rod as the inflection point. The clutch rope is a flexible non-elastic rope. A vertically arranged tensioning push rod is fixed to the right end of the pull rod and extends to the outside of the right slide block. The tensioning push rod is located to the right of the clutch rope. A tensioning push hole is opened at the right end of the right guide rod, and the clutch rope passes through the tensioning push hole.

[0018] When the conveyor belt shifts to the left and touches the left trigger baffle, the pull rod moves to the left, the tension push rod contacts the clutch pull rope and changes the tension of the clutch pull rope. At this time, the clamping block disengages from the cut of the output disc, and the output disc rotates synchronously with the driven sprocket under the contact of the clamping block through friction.

[0019] When the conveyor belt shifts to the right and touches the right trigger baffle, the pull rod moves to the right, the tension push hole contacts the clutch pull rope and changes the tension of the clutch pull rope. At this time, the clamping block disengages from the cut of the output disc, and the output disc rotates synchronously with the driven sprocket under the friction of the clamping block.

[0020] When the conveyor belt does not deviate, neither the tension push rod nor the tension push hole contacts the clutch pull rope. At this time, the clamping block abuts against the cut of the output disc, and the output disc does not rotate synchronously with the driven sprocket, that is, the driven sprocket is idling at this time.

[0021] Preferably, in order to transmit power reduction to the lead screw nut, the reducer is configured to include a housing fixed to the right slide block, and a first-stage reduction gear, 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 in the housing and concentrically connected to the shift fork. The lead screw nut is concentrically fixed in the third-stage reduction gear; wherein the diameters of the first-stage reduction gear, the second-stage reduction gear, and the third-stage reduction gear increase sequentially.

[0022] The beneficial effects of this utility model are as follows: By setting up a correction mechanism, this utility model can automatically correct and return the conveyor belt to its original position. It has rapid intervention, high correction accuracy, and a high degree of automation, effectively solving the problems of slow intervention, low accuracy, and excessive reliance on manual intervention in existing conveyor belt correction methods. The entire correction process transmits power through the driven roller, without other energy consumption, resulting in lower application costs. The overall structural design is reasonable, and the cooperation between various components is tight, enabling stable and reliable automatic correction of the conveyor belt. It has high practicality and promotional value. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 Three-dimensional structure of the automatic correction assembly for double-linkage conveyor belts Figure 1 ;

[0025] Figure 2 To hide Figure 1 3D structural diagram of the area behind the conveyor belt;

[0026] Figure 3 Three-dimensional structure of the automatic correction assembly for double-linkage conveyor belts Figure 2 ;

[0027] Figure 4 This is a front view of the automatic belt alignment assembly for dual-linkage conveyors.

[0028] Figure 5 for Figure 1 Three-dimensional structural diagram of the center correction mechanism;

[0029] Figure 6 for Figure 5 A magnified view of a section at point A in the middle;

[0030] Figure 7 for Figure 5 3D structural diagram of the left-center triggering mechanism;

[0031] Figure 8 for Figure 6 A three-dimensional structural diagram of the right-center triggering mechanism;

[0032] Figure 9 for Figure 6 A 3D structural diagram of a mid-shift transmission;

[0033] Figure 10 for Figure 9 Internal structure diagram of the synchronizer;

[0034] Figure 11 for Figure 6 A three-dimensional structural diagram of the transmission between the driving sprocket and the driven sprocket;

[0035] Figure 12 To hide Figure 11 Three-dimensional structural diagram of the driven sprocket and tensioner seat;

[0036] Figure 13 for Figure 11 A three-dimensional structural diagram of the clutch.

[0037] Figure 14 for Figure 6 3D structural diagram of the intermediate speed reducer;

[0038] Markings in the diagram: 1-Frame; 2-Driven roller; 3-Conveyor belt; 4-Slide; 5-Tensioning screw; 6-Screw nut; 7-Shift gearbox; 8-Drive 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-Tensioner 23-Tightening lever; 24-Shift lever; 25-Tension spring 1; 26-Driving bevel gear; 27-Driven bevel gear; 28-Output shaft; 29-Variable diameter disc; 30-Equal diameter disc; 31-Pressure block; 32-Tension spring 2; 33-Tensioning seat; 34-Clutch pull rope; 35-Tensioning lever 2; 36-Tensioning push rod; 37-Tensioning push hole; 38-Machining housing; 39-First stage reduction gear; 40-Second stage reduction gear; 41-Third stage reduction gear. Detailed Implementation

[0039] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0040] like Figures 1 to 6 As shown, a dual-linkage conveyor belt automatic correction assembly is provided for use in farms, for example, for conveying chicken manure. Figure 3 Based on this, it specifically includes a frame 1, a driven roller 2 laterally positioned at the front end of the frame 1, and a driving roller laterally positioned at the rear end of the frame 1. A conveyor belt 3 is wound between the driving roller and the driven roller 2, wherein the driven roller 2 is as follows: Figure 2 As shown, conveyor belt 3 is as follows Figure 1 As shown, the drive roller is omitted in the figure; as Figure 1 , Figure 3 As shown, the left and right ends of the driven roller 2 are respectively mounted on the frame 1 via slide blocks 4 that can slide back and forth. A tensioning screw 5 is provided between each slide block 4 and the frame 1 to drive the slide block 4 to slide back and forth. A correction mechanism is installed between the right slide block 4 and the right tensioning screw to drive the right slide block 4 to move forward or backward. Figures 5 to 6 As shown, the correction mechanism includes a screw nut 6 rotatably connected to the right tension screw, a shift gearbox 7 capable of driving the screw nut 6 to rotate forward and backward, a drive sprocket 8 for power output installed at the right end of the driven roller 2, and a driven sprocket 9 poweredly connected to the drive sprocket 8; a left triggering mechanism capable of detecting leftward deviation of the conveyor belt 3 is provided between the left slide 4 and the conveyor belt 3; and a right triggering mechanism capable of detecting rightward deviation of the conveyor belt 3 is provided between the right slide 4 and the conveyor belt 3.

[0041] When conveyor belt 3 deviates from its designated path, the correction mechanism can automatically correct and return it to its original position. For example, if conveyor belt 3 deviates to the left, it will trigger the left trigger mechanism, which will then drive the right slide table backward and correct the conveyor belt 3 to return to its right position. Similarly, if conveyor belt 3 deviates to the right, it will trigger the right trigger mechanism, which will then drive the right slide table forward and correct the conveyor belt 3 to return to its left position. The entire correction process is characterized by rapid intervention, high accuracy, and high automation. Moreover, the entire correction process transmits power through the driven roller 2, with no other energy consumption, resulting in lower application costs in the later stages.

[0042] like Figure 7As shown, when the conveyor belt 3 deviates to the left, it will trigger the left trigger mechanism. The left trigger mechanism is configured to include a left trigger baffle 10 that is rotatably mounted on the inner side of the left slide block 4 at its rear end. The front end of the left trigger baffle 10 is fixed with a left guide rod 11 that is horizontally arranged and movably passes through the left slide block 4. A left spring 12 that pushes the left trigger baffle 10 to rotate to the right is fitted on the left guide rod 11. The left trigger baffle 10 is relatively thin. After the conveyor belt 3 deviates and contacts the left trigger baffle 10, it will compress the left spring 12.

[0043] like Figure 8 As shown, when the conveyor belt 3 deviates to the right, it will trigger the right triggering mechanism. The right triggering mechanism is configured to include a right triggering baffle 13 that is rotatably mounted on the inner side of the right slide block 4 at its rear end. A right guide rod 14 that is horizontally arranged and movably passes through the right slide block 4 is fixed at the front end of the right triggering baffle 13. A right spring 15 that pushes the right triggering baffle 13 to rotate to the left is mounted on the right guide rod 14. The right triggering baffle 13 is relatively thin. After the conveyor belt 3 deviates and contacts the right triggering baffle 13, it will compress the right spring 15.

[0044] like Figure 9 As shown, in order to achieve gear shifting during correction, the gear shift transmission 7 is configured to include a synchronizer 16 fixed on the inner side of the right slide block 4; the right side of the synchronizer 16 is concentrically connected to a clutch 17 fixed on the outer side of the right slide block 4, wherein the driven sprocket 9 is concentrically connected to the clutch 17; a longitudinally arranged shift fork 18 is installed inside the synchronizer 16, and a reducer 19 is installed at the front end of the shift fork 18, wherein the lead screw nut 6 is installed inside the reducer 19; a shift lever 20 that matches the shift fork 18 is movably installed above the synchronizer 16.

[0045] Continue as Figure 9 As shown, a horizontal pull rod 21 is movably connected between the left trigger baffle 10 and the right trigger baffle 13. A vertically arranged tension rod 22 is fixed inside the pull rod 21 and is close to the shift lever 23. The shift lever 20 has a shift lever 23 fixed to its end. A shift rope 24 of fixed length is connected between the shift lever 23 and the right slide block 4. A tension spring 25 connected to the synchronizer 16 housing is attached to the front end of the shift lever 23. The shift rope 24 is always pulled to a tensioned state by the tension spring 25 with the tension rod 22 as the inflection point. The shift rope 24 is a flexible non-elastic rope, such as a steel wire rope.

[0046] like Figure 10As shown, a set of driving bevel gears 26 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 are rotatably installed in the synchronizer 16; the output shaft 28 of the clutch 17 is concentrically connected to the driving bevel gears 26, and the shift fork 18 is concentrically meshed with the driven bevel gears 27; when the shift fork 18 is engaged with different driven bevel gears 27, the shift fork 18 will rotate in different directions.

[0047] When the conveyor belt 3 shifts to the left and touches the left trigger baffle 10, the pull rod 21 moves to the left accordingly. Under the tension, the shift rope 24 pulls the lever handle 23 to rotate backward. At this time, the shift lever 20 moves the shift fork 18 to mesh with the driven bevel gear 27, i.e., the shift lever 20 enters reverse gear. At this time, the shift fork 18 drives the screw nut in the reducer 19 to drive the right slide table to slide backward and correct the conveyor belt 3 to return to the right. When the conveyor belt 3 shifts to the right and touches the right trigger baffle 13, the pull rod 21 moves to the right accordingly. Under the tension, the shift rope 24... Under the action of force, the lever 23 is pulled forward and rotated. At this time, the shift lever 20 moves the shift fork 18 to engage with the driven bevel gear 27 in front, 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 table to slide forward and correct the conveyor belt 3 to return to the left. When the conveyor belt 3 does not deviate, the pull rod 21 does not move. At this time, the shift fork 18 does not engage with the driven bevel gear 27 in front or rear, that is, the shift lever 20 enters the neutral gear. At this time, the screw nut does not move.

[0048] like Figure 11 , Figure 13 As shown, to ensure the operation of the shift transmission, the clutch 17 is configured to include an output shaft 28 concentrically connected to the driving bevel gear 26. A variable diameter disc 29 with a side slit is concentrically connected to the output shaft 28. A constant diameter disc 30 rotates concentrically on the variable diameter disc 29 and is concentrically connected to the driven sprocket 9. The driven sprocket 9 is connected to the driving sprocket 8 via a chain. A clamping block 31 is rotatably mounted on the bottom of the right slide, and the top of the clamping block 31 is connected to the right slide by a chain. The tension spring 32 is always taut and always in contact with the side of the variable diameter disc 29. When the clutch 17 is disengaged, the gap between the equal diameter disc 30 and the variable diameter disc 29 is large, and the equal diameter disc 30 and the driven sprocket 9 do not drive the variable diameter disc 29 to rotate when they rotate. When the clutch 17 is engaged, the gap between the equal diameter disc 30 and the variable diameter disc 29 is reduced. When the equal diameter disc 30 and the driven sprocket 9 rotate, the equal diameter disc 30 drives the variable diameter disc 29 to rotate through friction, thereby driving the output shaft 28 to rotate.

[0049] like Figures 11 to 13As shown, a tensioning seat 33 is fixed to the outer side of the right slide block 4. A clutch pull rope 34 of fixed length is connected between the tensioning seat 33 and the clamping block 31. A vertically arranged tensioning rod 35 is fixed inside the tensioning seat 33. The clutch pull rope 34 is always pulled to a tensioned state by the tension spring 32 with the tensioning rod 35 as the inflection point. The clutch pull rope 34 is a flexible non-elastic rope. A tensioning push rod 36 is fixed to the right end of the pull rod 21 and extends through to the outside of the right slide sleeve. The tensioning push rod 36 is located to the right of the clutch pull rope 34. A tensioning push hole 37 is opened at the right end of the right guide rod 14, and the clutch pull rope 34 passes through the tensioning push hole 37.

[0050] When the conveyor belt 3 shifts to the left and abuts against the left trigger baffle 10, the pull rod 21 moves to the left, and the tension push rod 36 contacts the clutch pull rope 34, changing the tension of the clutch pull rope 34. At this time, the clamping block 31 disengages from the cut of the output disc, and the output disc rotates synchronously with the driven sprocket 9 under the friction of the clamping block 31. When the conveyor belt 3 shifts to the right and abuts against the right trigger baffle 13, the pull rod 21 moves to the right, and the tension push hole 37 engages with the clutch pull rope 34. When the clutch pull rope 34 is engaged and its tension is changed, the clamping block 31 disengages from the cut of the output disc. Under the resistance of the clamping block 31, the output disc rotates synchronously with the driven sprocket 9 through friction. When the conveyor belt 3 does not deviate, neither the tension push rod 36 nor the tension push hole 37 contacts the clutch pull rope 34. At this time, the clamping block 31 abuts against the cut of the output disc, and the output disc does not rotate synchronously with the driven sprocket 9, that is, the driven sprocket 9 idles at this time.

[0051] like Figure 14 As shown, in order to transmit power reduction to the lead screw nut 6, the reducer 19 is configured to include a housing 38 fixed to the right slide 4. Inside the housing 38, a first-stage reduction gear 39 is rotatably mounted, which is concentrically connected to the shift fork 18. A second-stage reduction gear 40 meshes with the first-stage reduction gear 39, and a third-stage reduction gear 41 meshes with the second-stage reduction gear 40. The lead screw nut 6 is concentrically fixed inside the third-stage reduction gear 41. An internal thread that mates with the tensioning lead screw 5 can also be machined into the third-stage reduction gear 41. The diameters of the first-stage reduction gear 39, the second-stage reduction gear 40, and the third-stage reduction gear 41 increase sequentially.

[0052] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A double-linkage conveyor belt automatic correction assembly, comprising a frame, a driven roller transversely disposed at the front end of the frame, and a driving roller transversely disposed 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 via slide blocks that can slide back and forth, and each slide block is provided with a tension screw between it and the frame that can drive the slide block to slide back and forth. Its features are: A correction mechanism is installed between the right-side slide and the right-side tensioning screw, which can drive the right-side slide to move forward or backward; the correction mechanism includes a screw nut rotatably connected to the right-side tensioning screw, a gear shifter that can drive the screw nut to rotate forward and backward, a drive sprocket for power output is installed at the right end of the driven roller, and the gear shifter is provided with a driven sprocket that is poweredly connected to the drive sprocket; A left trigger mechanism is provided between the slide on the left and the conveyor belt to detect leftward deviation of the conveyor belt; when the conveyor belt deviates to the left, it can actuate the left trigger mechanism, which in turn drives the right slide to slide backward and corrects the conveyor belt to return to the right; a right trigger mechanism is provided between the slide on the right and the conveyor belt to detect rightward deviation of the conveyor belt; when the conveyor belt deviates to the right, it can actuate the right trigger mechanism, which in turn drives the right slide to slide forward and corrects the conveyor belt to return to the left.

2. The automatic belt alignment assembly for double-linkage conveyors according to claim 1, characterized in that: The left triggering mechanism includes a left triggering baffle that is rotatably mounted on the inner side of the left slide block at its rear end. A left guide rod that is horizontally arranged and movably passes through the left slide block is fixed at the front end of the left triggering baffle. A left spring that pushes the left triggering baffle to rotate to the right is fitted on the left guide rod. The right triggering mechanism includes a right triggering baffle that is rotatably mounted on the inner side of the right slide at its rear end. A right guide rod that is horizontally arranged and movably passes through the right slide is fixed at the front end of the right triggering baffle. A right spring that pushes the right triggering baffle to rotate to the left is fitted on the right guide rod.

3. The automatic belt alignment assembly for double-linkage conveyors according to claim 2, characterized in that: The gear shifting transmission includes a synchronizer fixed to the inner side of the right slide; a clutch fixed to the outer side of the right slide is concentrically connected to the right side of the synchronizer, wherein the driven sprocket is concentrically connected to the clutch; a longitudinally arranged shift fork is installed inside the synchronizer, and a reducer is installed at the front end of the shift fork, wherein the lead screw nut is installed inside the reducer; a shift lever matching the shift fork is movably installed above the synchronizer.

4. The automatic belt alignment assembly for double-linkage conveyors according to claim 3, characterized in that: A horizontal pull rod is movably connected between the left trigger baffle and the right trigger baffle. A vertically arranged tension rod is fixed inside the pull rod and close to the shift lever handle. A shift lever handle is fixed to the end of the shift lever. A shift rope of a fixed length is connected between the shift lever handle and the slide block on the right side. A tension spring connected to the synchronizer housing is hooked to the front end of the shift lever handle. The shift rope is always stretched to a taut state by the tension spring with the tension rod handle as the inflection point. The shift rope is a flexible non-elastic rope.

5. The automatic belt alignment assembly for double-linkage conveyors according to claim 4, characterized in that: The synchronizer contains a set of driving bevel gears and two sets of driven bevel gears distributed in front of and behind 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 shifts to the left and touches the left trigger baffle, the pull rod moves to the left. Under the action of tension, the shift rope pulls the lever handle to rotate backward. At this time, the shift lever moves the shift fork to mesh with the driven bevel gear behind, that is, the shift lever enters the reverse gear. At this time, the shift fork drives the screw nut in the reducer to drive the right slide table to slide backward and correct the conveyor belt to return to the right. When the conveyor belt shifts to the right and touches the right trigger baffle, the pull rod moves to the right. Under the action of tension, the shift rope pulls the lever handle to rotate forward. At this time, the shift lever moves 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 screw nut in the reducer to drive the right slide table to slide forward and correct the conveyor belt to return to the left. When the conveyor belt does not deviate, the lever does not move. At this time, the shift fork will not engage with either the front driven bevel gear or the rear driven bevel gear, meaning the shift lever is in neutral. At this time, the screw nut will not move.

6. The automatic belt alignment assembly for double-linkage conveyors according to claim 5, characterized in that: The clutch includes an output shaft concentrically connected to the driving bevel gear. A variable diameter disc with a side slit is concentrically connected to the output shaft. A constant diameter disc rotates concentrically on the variable diameter disc. The constant diameter disc is concentrically connected to the driven sprocket. The driven sprocket is connected to the driving sprocket via a chain. A clamping block is rotatably mounted on the bottom of the right slide. The top of the clamping block is always tensioned by a tension spring connected to the right slide and always abuts against the side of the variable diameter disc.

7. The automatic belt alignment assembly for double-linkage conveyors according to claim 6, characterized in that: A tensioning seat is fixed to the outer side of the right slide block. A clutch rope of a fixed length is connected between the tensioning seat and the clamping block. A vertically arranged tension rod is fixed inside the tensioning seat. The clutch rope is always pulled to a tensioned state by the tension spring with the tension rod as the inflection point. The clutch rope is a flexible non-elastic rope. A vertically arranged tension push rod is fixed to the right end of the pull rod and extends to the outside of the right slide sleeve. The tension push rod is located to the right of the clutch rope. A tension push hole is opened at the right end of the right guide rod, and the clutch rope passes through the tension push hole. When the conveyor belt shifts to the left and touches the left trigger baffle, the pull rod moves to the left, the tension push rod contacts the clutch pull rope and changes the tension of the clutch pull rope. At this time, the clamping block disengages from the cut of the output disc, and the output disc rotates synchronously with the driven sprocket under the contact of the clamping block through friction. When the conveyor belt shifts to the right and touches the right trigger baffle, the pull rod moves to the right, the tension push hole contacts the clutch pull rope and changes the tension of the clutch pull rope. At this time, the clamping block disengages from the cut of the output disc, and the output disc rotates synchronously with the driven sprocket under the friction of the clamping block. When the conveyor belt does not deviate, neither the tension push rod nor the tension push hole contacts the clutch pull rope. At this time, the clamping block abuts against the cut of the output disc, and the output disc does not rotate synchronously with the driven sprocket, that is, the driven sprocket is idling at this time.

8. The automatic belt alignment assembly for double-linkage conveyors according to claim 3, characterized in that: The reducer includes a housing fixed to the slide on the right side. Inside the housing, a first-stage reduction gear, a second-stage reduction gear meshing with the shift fork, 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. The diameters of the first-stage, second-stage, and third-stage reduction gears increase sequentially.

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