A chain-type passive hydraulic alignment roller

Abstract

This utility model relates to the field of self-aligning idler technology, specifically to a chain-type passive hydraulic self-aligning idler, including a fixed frame, an idler frame mounted on the fixed frame, and idlers mounted on the idler frame. It also includes a self-aligning mechanism mounted on the fixed frame. The idler frame includes a central support, a left support, and a right support respectively mounted at the middle and sides of the upper end of the fixed frame. The idlers are rotatably mounted on the central support, left support, and right support respectively. The self-aligning mechanism includes a drive cylinder mounted at the front of the fixed frame, a central shaft, a left shaft, and a right shaft rotatably mounted at the upper end of the fixed frame, a central swing arm plate, a left swing arm plate, and a right swing arm plate respectively fixed to the central shaft, left shaft, and right shaft, and a front chain and a rear chain respectively hinged to the front and rear ends of the central swing arm plate, left swing arm plate, and right swing arm plate. This utility model effectively improves the self-aligning idler's self-aligning effect by driving the three sets of idlers to rotate separately via the front and rear chains.

Description

Technical Field

[0001] This utility model relates to the field of self-aligning idler technology, specifically to a chain-type passive hydraulic self-aligning idler. Background Technology

[0002] Conveyor idlers are support devices used to support the conveyor belt and the material on it, ensuring the stable operation of the conveyor belt. The main function of self-aligning idlers is to prevent the conveyor belt from running off-center. When the belt runs to one side, the idler frame is rotated by a motor or hydraulic cylinder to adjust the angle between the idler frame and the idler.

[0003] Self-aligning idlers typically consist of three sets of idlers: a horizontal idler installed horizontally in the middle and inclined idlers installed at the sides. These three sets of idlers are mounted on the conveyor via an idler frame. The existing correction drive method uses a hydraulic cylinder or motor, which drives the idler frame and the three sets of idlers to rotate as a whole through a transmission mechanism. Because the entire idler frame has only one central axis, the rotation angle is limited as the center is the origin. After rotation, the load-bearing relationship and contact area between the idler and the conveyor belt are changed, resulting in high rotational resistance and poor correction effect. Utility Model Content

[0004] To address the aforementioned problems, this invention provides a chain-type passive hydraulic self-aligning idler roller. By driving the central swing arm plate with a drive cylinder, and by driving the three sets of idlers to rotate separately through the front and rear chains, the self-aligning idler roller's self-aligning effect is effectively improved, and the self-aligning resistance is reduced.

[0005] The technical solution adopted by this utility model is to provide a chain-type passive hydraulic correction roller, including a fixed frame, a roller frame set on the fixed frame and a roller set on the roller frame, and a correction mechanism set on the fixed frame. The roller frame includes a middle bracket, a left bracket and a right bracket respectively set on the middle and both sides of the upper end of the fixed frame, and the roller is rotatably mounted on the middle bracket, the left bracket and the right bracket respectively.

[0006] The correction mechanism includes a drive cylinder disposed on the front or rear side of the fixed frame, a central shaft, a left shaft, and a right shaft rotatably disposed on the upper end of the fixed frame and respectively located in the middle and on both sides of the fixed frame, a central swing arm plate, a left swing arm plate, and a right swing arm plate respectively fixed on the central shaft, the left shaft, and the right shaft, and a front chain and a rear chain respectively hinged to the front and rear ends of the central swing arm plate, the left swing arm plate, and the right swing arm plate;

[0007] The fixed end of the drive cylinder is hinged to the front or rear side of the fixed frame, and the drive end is hinged to one end on the same side as the middle swing arm plate. The lower ends of the middle bracket, left bracket and right bracket are respectively fixed to the upper ends of the central shaft, left shaft and right shaft. The middle swing arm plate, left swing arm plate and right swing arm plate are respectively located between the middle bracket and the fixed frame, between the left bracket and the fixed frame and between the right bracket and the fixed frame. The front chain is sequentially connected to the front end of the middle swing arm plate, left swing arm plate and right swing arm, and the rear chain is sequentially connected to the rear end of the middle swing arm plate, left swing arm plate and right swing arm.

[0008] The fixed frame includes a horizontal base frame, symmetrical inclined frames set on the upper end of the horizontal base frame, and guide wheels set on the front and rear sides of the horizontal base frame respectively. The middle bracket, left bracket, and right bracket are respectively set on the horizontal base frame between the inclined frames, on the left inclined frame, and on the right inclined frame. There are four guide wheels, which are respectively located between the front end and the rear end of the middle swing arm plate and the left swing arm plate, and between the front end and the rear end of the middle swing arm plate and the right swing arm plate. The front chain and the rear chain pass through the underside of the two guide wheels on the same side respectively.

[0009] It also includes a deflection protection mechanism symmetrically arranged on the front sides of both ends of the fixed frame. The deflection protection mechanism includes a vertical frame on the front side of the fixed frame, a swing plate hinged to the upper end of the vertical frame, a support plate set on the outer side of the vertical frame, a spring bolt set between the outer side of the support plate and the outer side of the swing plate, a horizontal plate set on the swing plate, a vertical stop roller rotatably set on the upper end of the horizontal plate, and a drive oil pump set on the lower end of the horizontal plate. The drive oil pump is connected to the oil supply port of the drive oil cylinder. The upper end of the spring bolt is hinged to the outer side of the swing plate, and the lower end passes through the outer side of the support plate and is limited.

[0010] The spring bolt includes a screw rod, a hinge seat set at the upper end of the screw rod, an adjusting nut, a compression spring, and a limiting nut that are sequentially fitted on the screw rod from top to bottom. The upper end of the screw rod is hinged to the swing plate by means of the hinge seat, and the lower end passes through the support plate and is limited by the limiting nut. The upper end of the compression spring is pressed against the adjusting nut, and the lower end is pressed against the support plate.

[0011] It also includes a pin hole at the lower end of the screw and a limiting pin inserted into the pin hole. The limiting nut is a hexagonal slotted nut and its lower end is pressed against the limiting pin.

[0012] The beneficial effects of this utility model are that it provides a chain-type passive hydraulic self-aligning idler. The idler frame adopts a split design, and the self-aligning mechanism uses a drive cylinder as the power source to drive the middle swing arm plate to swing horizontally. The front and rear chains drive the left and right swing arm plates to swing simultaneously, causing the three sets of idlers to rotate around their own centers. When the conveyor belt deviates, it effectively corrects the deviation. It has a large adjustment angle, short stroke, and is more flexible, effectively improving the self-aligning idler's self-aligning effect and reducing the self-aligning resistance. The structure is simple and effective, requires little modification to the original structure, and has low cost. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the correction mechanism in this utility model;

[0015] Figure 3 This is a schematic diagram of the spring bolt in this utility model.

[0016] In the attached diagram, 1 is the idler roller, 2 is the middle support, 3 is the left support, 4 is the right support, 5 is the drive cylinder, 6 is the central shaft, 7 is the left shaft, 8 is the right shaft, 9 is the middle swing arm plate, 10 is the left swing arm plate, 11 is the right swing arm plate, 12 is the front chain, 13 is the rear chain, 14 is the horizontal base frame, 15 is the tilting frame, 16 is the guide wheel, 17 is the upright frame, 18 is the swing plate, 19 is the support plate, 20 is the spring bolt, 21 is the vertical stop roller, 22 is the drive oil pump, 23 is the horizontal plate, 24 is the screw, 25 is the hinge seat, 26 is the adjusting nut, 27 is the compression spring, 28 is the limit nut, and 29 is the limit pin. Detailed Implementation

[0017] like Figure 1-3 As shown, this utility model provides a chain-type passive hydraulic correction roller, including a fixed frame, a roller frame mounted on the fixed frame, and rollers 1 mounted on the roller frame. It also includes a correction mechanism mounted on the fixed frame. The roller frame includes a central support 2, a left support 3, and a right support 4 respectively mounted at the middle and sides of the upper end of the fixed frame. The rollers 1 are rotatably mounted on the central support 2, the left support 3, and the right support 4 respectively. The correction mechanism includes a drive cylinder 5 mounted on the front or rear side of the fixed frame, a central shaft 6, a left shaft 7, and a right shaft 8 rotatably mounted on the upper end of the fixed frame and located at the middle and sides of the fixed frame respectively, a central swing arm plate 9, a left swing arm plate 10, and a right swing arm plate 11 respectively fixed on the central shaft 6, the left shaft 7, and the right shaft 8, and respectively... A front chain 12 and a rear chain 13 are hinged to the front and rear ends of the middle swing arm plate 9, the left swing arm plate 10, and the right swing arm plate 11. The fixed end of the driving cylinder 5 is hinged to the front or rear side of the fixed frame, and the driving end is hinged to one end on the same side as the middle swing arm plate 9. The lower ends of the middle bracket 2, the left bracket 3, and the right bracket 4 are respectively fixed to the upper ends of the central shaft 6, the left shaft 7, and the right shaft 8. The middle swing arm plate 9, the left swing arm plate 10, and the right swing arm plate 11 are respectively located between the middle bracket 2 and the fixed frame, between the left bracket 3 and the fixed frame, and between the right bracket 4 and the fixed frame. The front chain 12 is sequentially connected to the front ends of the middle swing arm plate 9, the left swing arm plate 10, and the right swing arm. The rear chain 13 is sequentially connected to the rear ends of the middle swing arm plate 9, the left swing arm plate 10, and the right swing arm.

[0018] The idler frame adopts a split design, consisting of a middle bracket 2, a left bracket 3, and a right bracket 4. The three idlers 1 are rotatably mounted on the middle bracket 2, the left bracket 3, and the right bracket 4, respectively. The central shaft 6, the left shaft 7, and the right shaft 8 are rotatably mounted on the fixed frame. The middle bracket 2, the left bracket 3, and the right bracket 4 are fixed to the upper ends of the central shaft 6, the left shaft 7, and the right shaft 8, respectively. At the middle of the central shaft 6, the left shaft 7, and the right shaft 8, that is, at the position between the middle bracket 2, the left bracket 3, and the right bracket 4 and the upper end of the fixed frame, a central swing arm plate 9, a left swing arm plate 10, and a right swing arm plate 11 are respectively fitted and fixed. The rotation of the central swing arm plate 9, the left swing arm plate 10, and the right swing arm plate 11 can drive the central shaft 6, the left shaft 7, and the right shaft 8.

[0019] The correction mechanism uses a drive cylinder 5 as the drive. The drive cylinder 5 is installed horizontally to the left and right. The fixed end is hinged to the fixed frame and located on the left or right front of the fixed frame. The telescopic end is horizontally facing the middle of the fixed frame and hinged to the end of the middle swing arm plate 9. The telescopic end of the drive cylinder 5 drives the middle swing arm plate 9 to swing horizontally, which drives the central shaft 6, the central bracket 2 and the roller 1 on it to rotate horizontally. The front ends of the middle swing arm plate 9, the left swing arm plate 10 and the right swing arm plate 11 are hinged to the front chain 12, and the rear ends are all hinged to the rear chain 13. The middle swing arm plate 9 swings horizontally. At the same time, the left swing arm plate 10 and the right swing arm plate 11 are driven to swing simultaneously by the front chain 12 and the rear chain 13, thereby driving the left shaft 7, the right shaft 8, the left bracket 3, the right bracket 4 and the two idler rollers 1 on them to rotate simultaneously. When the conveyor belt deviates, it can effectively correct the deviation. The three sets of idler rollers 1 rotate around their own center, with a large adjustment angle, short stroke and more flexibility. This design drives the three sets of idler rollers to rotate separately by driving the hydraulic cylinder, which effectively improves the deviation correction effect of the self-aligning idler roller, reduces the deviation correction resistance, and has a simple and effective structure with little modification to the original structure and low cost.

[0020] like Figure 1-2 As shown, the fixing frame includes a horizontal base frame 14, symmetrical inclined frames 15 arranged on the upper end of the horizontal base frame 14, and guide wheels 16 respectively arranged on the front and rear sides of the horizontal base frame 14. The middle bracket 2, left bracket 3 and right bracket 4 are respectively arranged on the horizontal base frame 14 between the inclined frames 15, on the left inclined frame 15 and on the right inclined frame 15. There are four guide wheels 16, which are respectively located between the front end and the rear end of the middle swing arm plate 9 and the left swing arm plate 10, and between the front end and the rear end of the middle swing arm plate 9 and the right swing arm plate 11. The front chain 12 and the rear chain 13 are respectively passed through the underside of the two guide wheels 16 on the same side.

[0021] The trough-type self-aligning idler roller of this design has a trough structure consisting of a horizontal base frame 14 and two inclined frames 15. The front chain 12 and the rear chain 13 pull the inclined left swing arm plate 10 and right swing arm plate 11 with high resistance and are not smooth. Therefore, four guide wheels 16 are set, two on the front side and two on the rear side of the fixed frame. The guide wheels 16 are located on the front and rear sides of the connection between the two inclined frames 1 and the horizontal base frame 14. The front chain 12 and the rear chain 13 pass under the two guide wheels 16 respectively. The guide wheels 16 have grooves on their circumference to prevent the front chain 12 and the rear chain 13 from deviating after being stressed. After the front chain 12 and the rear chain 13 are turned by the guide wheels 16, the pulling direction is consistent with the swing direction of the inclined left swing arm plate 10 and right swing arm plate 11, which greatly reduces the correction resistance and makes the rotation of the left swing arm plate 10 and right swing arm plate 11 smoother.

[0022] like Figure 1-2 As shown, it also includes a deflection protection mechanism symmetrically arranged on the front sides of both ends of the fixed frame. The deflection protection mechanism includes a vertical frame 17 on the front side of the fixed frame, a swing plate 18 hinged to the upper end of the vertical frame 17, a support plate 19 set on the outer side of the vertical frame 17, a spring bolt 20 set between the outer side of the support plate 19 and the outer side of the swing plate 18, a horizontal plate 23 set on the swing plate 18, a vertical stop roller 21 rotatably set on the upper end of the horizontal plate 23, and a drive oil pump 22 set on the lower end of the horizontal plate 23. The drive oil pump 22 is connected to the oil supply port of the drive oil cylinder 5. The upper end of the spring bolt 20 is hinged to the outer side of the swing plate 18, and the lower end passes through the outer side of the support plate 19 and is limited.

[0023] The lower end of the swing plate 18 is hinged, and the upper end can swing inward and outward. The swing plate 18 is connected to the support plate 19 on the outside by spring bolts 20 to limit the swing plate 18 so that it can only swing outward. The vertical guide roller 21 on the horizontal plate 23 is horizontally aligned with the outer edge of the conveyor belt and plays a guiding role for the conveyor belt. When the conveyor belt deviates severely, the vertical guide roller 21 is subjected to force and drives the swing plate 18 to swing outward, which effectively avoids damage caused by excessive force on the vertical guide roller 21. It also avoids excessive friction between the side edge of the conveyor belt and the vertical guide roller 21, which would lead to damage to the conveyor belt, thus playing a protective role.

[0024] like Figure 2-3 As shown, the spring bolt 20 includes a screw 24, a hinge seat 25 disposed on the upper end of the screw 24, an adjusting nut 26, a compression spring 27, and a limiting nut 28 sequentially mounted on the screw 24 from top to bottom. The upper end of the screw 24 is hinged to the swing plate 18 via the hinge seat 25, and the lower end passes through the support plate 19 and is limited by the limiting nut 28. The upper end of the compression spring 27 is pressed against the adjusting nut 26, and the lower end is pressed against the support plate 19.

[0025] The spring bolt 20 consists of a screw 24, a hinge seat 25, an adjusting nut 26, a compression spring 27, and a limiting nut 28. The hinge seat 25 is fixed to the upper end of the screw 24 and is used to hinge with the swing plate 18. The specific structure is not limited. After installation, the upper end of the compression spring 27 abuts against the adjusting nut 26. The support plate 19 has a through hole. The lower end of the screw 24 passes through the through hole and is limited by tightening the limiting nut 28, so that the screw 24 cannot disengage upward and can only move downward. The force of the compression spring 27 can also be adjusted by adjusting the adjusting nut 26, making it more flexible and convenient to use.

[0026] like Figure 3 As shown, it also includes a pin hole at the lower end of the screw 24 and a limiting pin 29 inserted into the pin hole. The limiting nut 28 is a hexagonal slotted nut with its lower end pressed against the limiting pin 29. After the limiting nut 28 is installed, the limiting pin 29 is used for further limiting, effectively preventing the limiting nut 28 from loosening, making it more stable and safer to use.

Claims

1. A chain-type passive hydraulic alignment roller, comprising a fixed frame, a roller frame mounted on the fixed frame, and an idler (1) mounted on the roller frame, characterized in that: It also includes a correction mechanism set on a fixed frame. The roller frame includes a middle bracket (2), a left bracket (3) and a right bracket (4) respectively set at the middle and both sides of the upper end of the fixed frame. The roller (1) is rotatably mounted on the middle bracket (2), the left bracket (3) and the right bracket (4). The correction mechanism includes a drive cylinder (5) disposed on the front or rear side of the fixed frame, a central shaft (6), a left shaft (7) and a right shaft (8) rotatably disposed on the upper end of the fixed frame and respectively located in the middle and on both sides of the fixed frame, a central swing arm plate (9), a left swing arm plate (10) and a right swing arm plate (11) respectively fixed on the central shaft (6), the left shaft (7) and the right shaft (8), and a front chain (12) and a rear chain (13) respectively hinged to the front and rear ends of the central swing arm plate (9), the left swing arm plate (10) and the right swing arm plate (11); The fixed end of the drive cylinder (5) is hinged to the front or rear side of the fixed frame, and the drive end is hinged to one end of the middle swing arm plate (9) on the same side. The lower ends of the middle bracket (2), left bracket (3) and right bracket (4) are fixed to the upper ends of the central shaft (6), left shaft (7) and right shaft (8) respectively. The middle swing arm plate (9), left swing arm plate (10) and right swing arm plate (11) are located between the middle bracket (2) and the fixed frame, between the left bracket (3) and the fixed frame, and between the right bracket (4) and the fixed frame respectively. The front chain (12) is connected to the front end of the middle swing arm plate (9), left swing arm plate (10) and right swing arm in sequence. The rear chain (13) is connected to the rear end of the middle swing arm plate (9), left swing arm plate (10) and right swing arm in sequence.

2. The chain-type passive hydraulic alignment roller according to claim 1, characterized in that: The fixed frame includes a horizontal base frame (14), a symmetrical inclined frame (15) set on the upper end of the horizontal base frame (14), and guide wheels (16) respectively set on the front and rear sides of the horizontal base frame (14). The middle bracket (2), left bracket (3) and right bracket (4) are respectively set on the horizontal base frame (14) between the inclined frames (15), on the left inclined frame (15) and on the right inclined frame (15). There are four guide wheels (16) and they are respectively located between the front end and the rear end of the middle swing arm plate (9) and the left swing arm plate (10), and between the front end and the rear end of the middle swing arm plate (9) and the right swing arm plate (11). The front chain (12) and the rear chain (13) pass through the underside of the two guide wheels (16) on the same side.

3. The chain-type passive hydraulic alignment roller according to claim 1, characterized in that: It also includes a deflection protection mechanism symmetrically arranged on the front side of both ends of the fixed frame. The deflection protection mechanism includes a vertical frame (17) on the front side of the fixed frame, a swing plate (18) hinged to the upper end of the vertical frame (17), a support plate (19) set on the outside of the vertical frame (17), a spring bolt (20) set between the outside of the support plate (19) and the outside of the swing plate (18), a horizontal plate (23) set on the swing plate (18), a vertical stop roller (21) rotatably set on the upper end of the horizontal plate (23), and a drive oil pump (22) set on the lower end of the horizontal plate (23). The drive oil pump (22) is connected to the oil supply port of the drive oil cylinder (5). The upper end of the spring bolt (20) is hinged to the outside of the swing plate (18), and the lower end passes through the outside of the support plate (19) and is limited.

4. A chain-type passive hydraulic alignment roller according to claim 3, characterized in that: The spring bolt (20) includes a screw (24), a hinge seat (25) set on the upper end of the screw (24), an adjusting nut (26), a compression spring (27) and a limiting nut (28) sequentially mounted on the screw (24) from top to bottom. The upper end of the screw (24) is hinged to the swing plate (18) by means of the hinge seat (25), and the lower end passes through the support plate (19) and is limited by the limiting nut (28). The upper end of the compression spring (27) is pressed against the adjusting nut (26), and the lower end is pressed against the support plate (19).

5. A chain-type passive hydraulic alignment roller according to claim 4, characterized in that: It also includes a pin hole at the lower end of the screw (24) and a limiting pin (29) inserted into the pin hole. The limiting nut (28) is a hexagonal slotted nut and its lower end is pressed against the limiting pin (29).

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