A convenient adjustable trough-type idler assembly for belt conveyors

Abstract

This utility model relates to the field of belt conveyors and discloses a convenient and adjustable trough angle idler assembly for belt conveyors. It includes an idler assembly mounted above a crossbeam, with a ratchet mechanism between the idler assembly and the crossbeam. The ratchet mechanism includes a ratchet located below the idler assembly and a pawl located on the crossbeam. The pawl engages with the ratchet through different tooth grooves to fix the idler assembly after the trough angle adjustment. This utility model allows for adaptive adjustment of the trough angle of the idler assembly, ensuring complete contact between the conveyor belt and the idler assembly, without the need for tightening / loosening bolts. It offers the advantages of convenient adjustment, time-saving and labor-saving trough angle adjustment, good overall stability of the idler assembly, and the ability to achieve fine-tuning of the trough angle.

Description

Technical Field

[0001] This utility model relates to the field of belt conveyors, and in particular to a convenient adjustable trough-type idler group for belt conveyors. Background Technology

[0002] Idler assemblies for belt conveyors are crucial components for supporting the conveyor belt. To ensure a smooth transition between flat and trough profiles, existing technologies utilize various idler assemblies, including 10° transition idlers, 20° transition idlers, and adjustable trough angle idler assemblies. However, idler assemblies with a single fixed angle sometimes experience incomplete or excessive contact between the conveyor belt and the idler, leading to belt misalignment. Therefore, adaptive adjustment of the trough angle of the idler assembly is necessary.

[0003] Existing adjustable trough-angle idler sets typically adjust the trough angle by tightening / loosening bolts. For example, Chinese utility model patent CN203819970U, entitled "An Adjustable Trough-Shaped Idler Set," discloses the following technical solution: An adjustable trough-shaped idler set, comprising a sliding mechanism, a crossbeam, movable seats, movable idlers, fixed idlers, idler brackets, movable handles, a first fixed bracket, and a second fixed bracket; wherein: sliding mechanisms are installed at both ends of the crossbeam; four sets of movable seats are arranged in the trough of the crossbeam, with the inner two sets connected to the lower parts of the left and right idler brackets respectively, and the outer two sets connected to the middle parts of the left and right idler brackets respectively via movable handles; idlers are respectively fitted onto the left and right idler brackets; a first fixed bracket and a second fixed bracket are arranged on one side of the middle of the crossbeam, and a fixed idler is fitted between the first fixed bracket and the second fixed bracket.

[0004] The patented method adjusts the bracket angle by tightening / loosening the bolts between the movable seat and the sliding mechanism. This adjustment method is actually quite cumbersome, and frequent bolt adjustments can cause various mechanical failures, affecting the overall stability of the idler roller assembly. Utility Model Content

[0005] To overcome the problems in the background art where fixed-angle idler groups may cause conveyor belt deviation and mechanical failure due to the existing method of adjusting the trough angle by tightening / loosening bolts, this utility model provides a convenient and adjustable trough angle trough idler group for belt conveyors. It can adaptively adjust the trough angle of the idler group, ensuring complete contact between the conveyor belt and the idler group, without the need for tightening / loosening bolts. It has the advantages of convenient adjustment, time-saving and labor-saving trough angle adjustment process, good overall stability of the idler group, and the ability to achieve fine adjustment of the trough angle.

[0006] The technical solution of this utility model is as follows:

[0007] A convenient adjustable trough angle trough type idler group for belt conveyors includes an idler group installed above a crossbeam. A ratchet mechanism is provided between the idler group and the crossbeam. The ratchet mechanism includes a ratchet disposed below the idler group and a pawl disposed on the crossbeam. The pawl engages with the ratchet through different tooth grooves to fix the idler group after the trough angle adjustment is completed.

[0008] Compared with existing technologies, the beneficial effects of this technical solution are as follows:

[0009] A ratchet is installed below the idler roller assembly. Rotating the ratchet changes its height, thus adapting to adjust the trough angle of the idler roller assembly. Once the trough angle is determined, the pawl can be engaged with the corresponding tooth groove of the ratchet. The pawl and ratchet support the idler roller assembly. This allows for adaptive adjustment of the trough angle of the idler roller assembly according to actual conditions, avoiding conveyor belt deviation and preventing mechanical failure caused by tightening / loosening bolts to adjust the trough angle.

[0010] Preferably, the ratchet is a vertically arranged fan-shaped structure, with its ratchet teeth arranged along the arc-shaped edge and the opening of its tooth groove facing downwards.

[0011] Its beneficial effects are as follows: by setting the ratchet with this structure and arrangement, the height position can be adjusted by rotating the ratchet, thereby adjusting the groove angle, and the ratchet and pawl can remain engaged after adjustment to support the idler roller group.

[0012] More preferably, the upper chord edge of the ratchet is fixedly connected to the roller assembly, while its lower part can pass through the crossbeam.

[0013] Its beneficial effects are that the roller assembly can move up and down with the ratchet, thereby adjusting its own angle, and the lower part of the ratchet passes through the crossbeam, so the crossbeam will not obstruct the normal rotation trajectory of the ratchet.

[0014] More preferably, the idler assembly includes an idler roller, an idler roller support frame for mounting the idler roller, and a central support column. The central support column is hinged to the idler roller support frames on both sides. The upper chord edge of the ratchet is fixedly connected to the bottom of the idler roller support frame. The idler roller support frame is also fixed with a handle. The crossbeam has an elongated hole through which the ratchet can pass. The surface of the ratchet also has several openings.

[0015] Its beneficial effects are as follows: the idler support frame works in conjunction with the central support column to install and support the side idlers and the central idler; the idler support frame can drive the side idlers to rotate around the hinge point, thereby realizing the adjustment of the trough angle of the idler group; by setting a handle on the idler support frame, the operator can easily lift the idler support frame by lifting the handle, thereby rotating the ratchet and adjusting the trough angle without hindering the normal operation of the idler group; the setting of the elongated hole allows the ratchet to pass through the crossbeam without hindering the normal rotation trajectory of the ratchet, and the ratchet can slide up and down in the elongated hole, and the ratchet is subject to certain restrictions to ensure the stability of the entire idler group in the running state; the setting of the opening can reduce the weight of the ratchet itself while ensuring the strength of the ratchet itself, reducing the load on the idler group during operation and ensuring the structural stability of the idler group in the running state.

[0016] More preferably, the tooth groove angle of the ratchet is 1-3°, and the groove angle adjustment range is 10°-40°.

[0017] Its beneficial effects are as follows: by setting the toothed groove within this angle range, the groove angle can be finely adjusted, which can better correct the conveyor belt deviation; the groove angle adjustment range can replace 10° transition idlers, 20° transition idlers and 30° transition idlers, and realize the groove angle adjustment of various types of transition idlers.

[0018] Preferably, the pawl is mounted on the crossbeam via a base, the pawl is hinged to the base, and can rotate around the hinge point.

[0019] Its beneficial effect is that by setting the pawl to be hinged to the base, the pawl can adapt to the position movement of the ratchet, and re-engage with the corresponding tooth groove of the ratchet after the groove angle is determined.

[0020] More preferably, one side of the pawl is connected to one end of the spring, and the other end of the spring is connected to the crossbeam, with the spring pulling the pawl towards the ratchet.

[0021] Its beneficial effects are as follows: because a spring is provided to tighten the pawl, even if one end of the pawl is hinged to the base, when the pawl is engaged with the ratchet, the spring connected to the crossbeam can also tighten the pawl towards the ratchet, so that the ratchet and pawl can maintain a more stable engagement and self-locking state; and under the joint connection of the ratchet and the spring, the pawl will not gradually disengage from the ratchet due to vibration during transportation, thus preventing mechanical accidents.

[0022] More preferably, the pawl and the crossbeam are respectively fixed with hanging posts, and the hooks at both ends of the spring are respectively hooked into the hanging holes of the hanging posts.

[0023] Its beneficial effect is that by setting the hook of the spring to be attached to the hanging hole of the hanging column, the two ends of the spring can be stably connected to the pawl and the crossbeam, and the spring can function stably.

[0024] In a further preferred embodiment, a finger ring is also fixed to the pawl, and the finger ring can lift the pawl.

[0025] Its beneficial effect is that by lifting the ring and rotating the ratchet, the adjustment of the roller group to reduce the trough angle can be completed.

[0026] More preferably, the ratchet mechanism has two sets, located on both sides below the roller set.

[0027] Its beneficial effect is that the trough angles on both sides of the idler roller group can be adjusted adaptively. Attached Figure Description

[0028] This utility model will be described with reference to the accompanying drawings, wherein:

[0029] Figure 1 This is a front view of the entire utility model;

[0030] Figure 2 This is a three-dimensional structural diagram of part of the present utility model;

[0031] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0032] Reference numerals: 1. Crossbeam; 11. Long hole; 21. Roller support frame; 21. Base plate; 211. Side plate; 212. Bayonet; 213. Connecting plate; 214. Central support column; 22. Central idler roller; 23. Side idler roller; 24. Roller shaft; 25. Handle; 26. Ratchet; 3. Opening; 30. Upper chord edge; 31. Ratchet tooth; 32. Tooth groove; 33. Upper tooth surface; 331. Lower tooth surface; 332. Pad; 4. Base; 41. Finger ring; 42. Spring; 5. Hook; 50. Hanging post; 51. Hanging hole; 52. Rotating shaft; 6. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0034] Example 1: As Figures 1 to 3The diagram shows a convenient adjustable trough-angle idler group for a belt conveyor, comprising an idler group mounted above a crossbeam 1, with a ratchet mechanism between the idler group and the crossbeam 1. The ratchet mechanism includes a ratchet 3 located below the idler group and a pawl 4 located on the crossbeam 1. The pawl 4 engages with a tooth groove 33 different from that of the ratchet 3 (at different positions on the ratchet 3) to fix the idler group after the trough angle is adjusted. That is, when the trough angle of the idler group needs to be adjusted, the ratchet 3 is rotated, and the idler group moves with the ratchet 3 to adjust the trough angle (adjusting the trough angle means adjusting the angle between the two sides of the idler group and the crossbeam 1). After the trough angle is determined, the pawl 4 engages with the tooth groove 33 at the corresponding position of the ratchet 3. The height of the connection position between the pawl 4 and the ratchet 3 remains unchanged, and the inclination of the pawl 4 itself is not fixed.

[0035] In addition, there are two sets of ratchet mechanisms, located on both sides below the roller group, which can adaptively adjust the groove angles on both sides of the roller group.

[0036] Therefore, by setting a ratchet 3 below the idler group, the height of the ratchet 3 can be changed by rotating the ratchet 3, thereby adaptively adjusting the trough angle of the idler group. After the trough angle is determined, the pawl 4 can be engaged with the corresponding tooth groove 33 of the ratchet 3. After the pawl 4 and the ratchet 3 are engaged, the idler group is supported. This not only allows for adaptive adjustment of the trough angle of the idler group according to the actual situation, avoiding the problem of conveyor belt deviation, but also avoids the problem of mechanical failure that can easily occur by tightening / loosening bolts to adjust the trough angle.

[0037] Example 2: Based on Example 1, the ratchet 3 is optimized. The ratchet 3 is a vertically arranged fan-shaped structure perpendicular to the crossbeam 1. Its ratchet teeth 32 are helical teeth, and the tooth grooves 33 are recessed parts between adjacent ratchet teeth 32. The openings 30 of the tooth grooves 33 face downwards, and the length of the upper tooth surface 331 in each tooth groove 33 is less than the length of the lower tooth surface 332. When adjusting the groove angle, the ratchet 3 is rotated upwards, and the pawl 4 moves relative to the lower tooth surface 332, disengaging from the tooth groove 33. After the groove angle is adjusted, the pawl 4 re-engages in the corresponding tooth groove 33, maintaining engagement with the ratchet 3. The ratchet mechanism is a unidirectional intermittent motion mechanical device. Therefore, when the pawl 4 and the ratchet 3 are engaged, the ratchet 3 can only rotate upwards when subjected to an upward force, and will not rotate downwards when subjected to a downward force. Therefore, when the roller assembly is transporting materials, the ratchet 3 will not disengage from the pawl 4 when subjected to downward pressure, but will instead engage more firmly with the pawl 4. Therefore, by setting the ratchet 3 with this structure and arrangement, the height position can be adjusted by rotating the ratchet 3, thereby adjusting the groove angle. After the adjustment is completed, the ratchet 3 and the pawl 4 remain engaged to support the idler roller group.

[0038] The upper chord edge 31 of the ratchet 3 (i.e. the radial edge located at the top in the fan-shaped structure) is fixedly connected to the roller assembly, while its lower part can pass downward through the crossbeam 1. The roller assembly can then move up and down with the ratchet 3 to adjust its own angle. Furthermore, since the lower part of the ratchet 3 passes through the crossbeam 1, the crossbeam 1 will not obstruct the normal rotation trajectory of the ratchet 3.

[0039] Specifically, the idler assembly includes idlers, an idler support frame 21 for mounting the idlers, and a central support column 22. There are three idlers: one horizontally arranged central idler 23 and two inclined side idlers 24. The two side idlers 24 are located on both sides of the central idler 23. The roller shaft 25 of the central idler 23 is engaged at both ends on the central support column 22 on both sides. The central support column 22 is vertically fixed to the crossbeam 1. The included angle between the two side idlers 24 and the crossbeam 1 is the groove angle of the idler assembly. The roller shaft 25 of the two side idlers 24 is engaged at both ends on the idler support frame 21. That is, each idler support frame 21 includes a base plate 211 and side plates 212 vertically fixed at both ends of the base plate 211. The top of the side plate 212 is provided with a slot 213, and the roller shaft 25 of the side idler 24 is engaged in the corresponding slot 213. Thus, the idler support frame 21 and the central support column 22 work together to install and support the side idler 24 and the central idler 23.

[0040] The central support column 22 is hinged to the roller support frames 21 on both sides. Specifically, the side plate 212 of the roller support frame 21 near the central support column 22 is vertically fixed with a connecting plate 214. The connecting plate 214 is hinged to the central support column 22 through a pivot 6 that passes vertically through both. The connecting plate 214 can drive the roller support frame 21 to rotate around the pivot 6. Thus, the roller support frame 21 can drive the side rollers 24 to rotate around the hinge point (pivot 6), thereby realizing the adjustment of the trough angle of the roller group.

[0041] The upper chord edge 31 of the ratchet 3 is rigidly fixed (welded) to the bottom of the roller support frame 21 to realize the synchronous movement of the ratchet 3 and the roller support frame 21. The roller support frame 21 is also fixed with a handle 26, which is located at a position slightly above the bottom surface of the bottom plate 211 of the roller support frame 21. By setting the handle 26 on the roller support frame 21, the operator can easily lift the roller support frame 21 by lifting the handle 26, thereby rotating the ratchet 3 and adjusting the groove angle without hindering the normal operation of the roller assembly.

[0042] The crossbeam 1 has an elongated hole 11 through which a ratchet 3 can pass. When the size of the idler roller trough angle is adjusted, the ratchet 3 will rotate. The elongated hole 11 allows the ratchet 3 to pass through the crossbeam 1 without obstructing its normal rotation trajectory. The ratchet 3 can also slide up and down within the elongated hole 11, which provides some constraint and ensures the stability of the entire idler roller assembly during operation. The surface of the ratchet 3 also has several openings 30 that penetrate the ratchet 3. The openings 30, while ensuring the strength of the ratchet 3, reduce its weight, lessen the load on the idler roller assembly during operation, and simultaneously ensure the structural stability of the idler roller assembly during operation.

[0043] Preferably, the included angle of the groove 33 of the ratchet 3 is 1-3°, and in this embodiment it is 2°. By setting the groove 33 within this angle range, the groove angle can be finely adjusted, which can better correct the conveyor belt deviation. The angle adjustment range of the groove angle is 10°-40°, which can replace 10° transition idlers, 20° transition idlers and 30° transition idlers, and realize the groove angle adjustment of various types of transition idlers.

[0044] Example 3: Based on Example 1, the pawl 4 is optimized. The pawl 4 is mounted on the crossbeam 1 via a base 41. The base 41 is fixed to the crossbeam 1, and its fixed position is set according to the position of the ratchet 3, ensuring that the pawl 4 engages with the tooth groove 33 at a specific height on the ratchet 3. A horizontally arranged rotating shaft 6 is provided inside the base 41. The length direction of the rotating shaft 6 is perpendicular to the crossbeam 1. The lower part of the pawl 4 is hinged to the base 41 via the rotating shaft 6, and the pawl 4 can rotate around the hinge point (rotating shaft 6). By setting the pawl 4 to be hinged to the base 41, the pawl 4 can adapt to the positional movement of the ratchet 3, and re-engage with the corresponding tooth groove 33 of the ratchet 3 after the groove angle is determined.

[0045] Example 4: Based on Example 3, the pawl 4 is optimized. One side of the pawl 4 is connected to one end of the spring 5, and the other end of the spring 5 is connected to the crossbeam 1. The spring 5 pulls the pawl 4 towards the ratchet 3. The spring 5 can be a light spring 5, which maintains a certain tension force to pull the pawl 4 so that it is fully engaged in the tooth groove 33 of the ratchet 3. Because the spring 5 is provided to pull the pawl 4, even if one end of the pawl 4 is hinged to the base 41, when the pawl 4 is engaged with the ratchet 3, the spring 5 connected to the crossbeam 1 can still pull the pawl 4 towards the ratchet 3. The ratchet 3 and the pawl 4 can maintain a more stable engagement and self-locking state. Under the joint connection of the ratchet 3 and the spring 5, the pawl 4 will not gradually disengage from the ratchet 3 due to vibration during transportation, thus preventing mechanical accidents.

[0046] Preferably, a hanging post 51 is vertically fixed to the side of the pawl 4 and the upper surface of the crossbeam 1, respectively. The hanging post 51 has a hanging hole 52. The hooks 50 at both ends of the spring 5 are respectively hooked into the hanging hole 52 of the hanging post 51. By setting the hooks 50 of the spring 5 to be hooked into the hanging hole 52 of the hanging post 51, the two ends of the spring 5 can be stably connected to the pawl 4 and the crossbeam 1, and the spring 5 can function stably.

[0047] In a further preferred embodiment, a ring 42 is fixed to the upper surface of the pawl 4. The ring 42 can lift the hanging column 51. By rotating the ratchet 3 in conjunction with lifting the ring 42, the adjustment of the roller group to reduce the trough angle can be completed.

[0048] When it is necessary to increase the trough angle of the idler roller, the idler roller support frame 21 can be lifted upward by the handle 26 provided on the idler roller support frame 21. The idler roller support frame 21, along with the side idler roller 24 and ratchet 3, rotates upward around the hinge point with the central support column 22. While the idler roller support frame 21 rotates upward, the pawl 4 slides downward along the lower tooth surface 332 of the tooth groove 33, disengaging from the current tooth groove 33 and entering the next tooth groove 33 of the ratchet 3, until the idler roller group is increased to a suitable trough angle, thus completing the increase of the idler roller trough angle.

[0049] When it is necessary to reduce the trough angle of the idler roller, the handle 26 on the idler roller support frame 21 can be used to lift the idler roller support frame 21 upward. The idler roller support frame 21, along with the side idler roller 24 and ratchet 3, rotates upward around the hinge point with the central support column 22. While the idler roller support frame 21 rotates upward, the pawl 4 slides downward along the lower tooth surface 332 of the tooth groove 33 and disengages from the current tooth groove 33. When the pawl 4 disengages from the tooth groove 33, the finger ring 42 is lifted to pull the pawl 4 up. When the trough angle is lowered to a suitable angle, the pawl 4 is then engaged in the same height tooth groove 33 of the ratchet 3. The tilt angle of the pawl 4 remains unchanged, thus completing the reduction of the idler roller trough angle.

[0050] The above embodiments merely illustrate specific implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the technical solution of this application, and these all fall within the scope of protection of this application.

Claims

1. A set of conveniently adjustable angle troughed idler for belt conveyors characterized in that: The roller assembly includes a roller group installed above the crossbeam (1), and a ratchet mechanism is provided between the roller group and the crossbeam (1). The ratchet mechanism includes a ratchet (3) located below the roller group and a pawl (4) located on the crossbeam (1). The pawl (4) engages with the ratchet (3) through a tooth groove (33) different from the ratchet (3) to fix the roller group after the groove angle adjustment is completed.

2. A set of conveniently adjustable angle troughed idler for belt conveyors as claimed in claim 1 wherein: The ratchet (3) is a vertically arranged fan-shaped structure, with its ratchet teeth (32) arranged along the arc-shaped edge, and the opening (30) of its tooth groove (33) facing downwards.

3. A set of conveniently adjustable angle troughed idler groups for a belt conveyor according to claim 2, characterized in that: The upper chord edge (31) of the ratchet (3) is fixedly connected to the roller assembly, while its lower part can pass through the crossbeam (1).

4. A set of conveniently adjustable angle troughed idler for belt conveyors as claimed in claim 3 wherein: The idler assembly includes an idler, an idler support frame (21) for mounting the idler, and a central support column (22). The central support column (22) is hinged to the idler support frames (21) on both sides. The upper chord edge (31) of the ratchet (3) is fixedly connected to the bottom of the idler support frame (21). The idler support frame (21) is also fixed with a handle (26). The crossbeam (1) has an elongated hole (11) through which the ratchet (3) can pass. The surface of the ratchet (3) also has several openings (30).

5. A set of conveniently adjustable angle troughed idler for belt conveyors as claimed in claim 2 wherein: The tooth groove (33) of the ratchet (3) has an angle of 1-3°, and the angle adjustment range of the groove angle is 10°-40°.

6. A set of conveniently adjustable angle troughed idler for belt conveyors as claimed in claim 1 wherein: The pawl (4) is mounted on the crossbeam (1) via the base (41). The pawl (4) is hinged to the base (41) and can rotate around the hinge point.

7. A set of conveniently adjustable angle troughed idler for belt conveyors as claimed in claim 6 wherein: One side of the pawl (4) is connected to one end of the spring (5), and the other end of the spring (5) is connected to the crossbeam (1). The spring (5) pulls the pawl (4) towards the ratchet (3).

8. A set of conveniently adjustable angle troughed idler for belt conveyors as claimed in claim 6 wherein: Hanging posts (51) are fixed on the pawl (4) and the crossbeam (1), respectively, and the hooks (50) at both ends of the spring (5) are respectively hooked into the hanging holes (52) of the hanging posts (51).

9. A set of conveniently adjustable angle troughed idler for belt conveyors as claimed in claim 1 or claim 6 wherein: A ring (42) is also fixed on the pawl (4), which can lift the pawl (4).

10. A set of conveniently adjustable angle troughed idler for belt conveyors as claimed in any one of the claims 1 to 9 wherein: The ratchet mechanism has two sets, located on both sides below the idler roller set.

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