Small horizontal turning curve belt conveyor groove type adjustable lower carrier roller set

Abstract

The utility model relates to the technical field of belt conveyors, and discloses a small horizontal turning curve belt conveyor groove type adjustable lower carrier roller set which comprises a carrier roller set body, rollers in the carrier roller set body are arranged on a cross beam, the small horizontal turning curve belt conveyor groove type adjustable lower carrier roller set further comprises two sections of supporting leg stand columns which are vertically arranged, and the cross beam is fixed between the two sections of supporting leg stand columns. The inner lifting angle of the carrier roller group is adjusted by adjusting the inclination angle of the carrier roller group through the adjusting device; the adjusting device is fixedly connected with the cross beam and the supporting leg stand column. According to the utility model, the inclination angle of the cross beam is adjusted by arranging the adjusting device, the inner lifting angle of the carrier roller group can be adjusted, and the device has the beneficial effects of dynamic deviation rectifying capability and stable structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of belt conveyor, especially to a small horizontal turning curve belt conveyor trough type adjustable lower carrier roller group. BACKGROUND

[0002] In the material conveying field, the belt conveyor is widely applied because of its high efficiency and reliability. However, the conveying belt and the material will be subjected to the centripetal force generated by the conveying belt tension when the traditional belt conveyor is horizontally turned, and there are many problems, such as the conveying belt deviation, the wear aggravation, the material leakage, etc. Especially in the case of small radius horizontal turning, these problems are more prominent. The existing return section carrier roller group (parallel lower carrier roller or V-shaped carrier roller) design is mostly for straight line conveying or large radius turning, and it is difficult to meet the needs of small horizontal turning or bidirectional conveying material curve belt conveyor. SUMMARY

[0003] In order to overcome the problems in the above background art, the utility model provides a small horizontal turning curve belt conveyor trough type adjustable lower carrier roller group, which adjusts the inclination angle of the cross beam by setting the adjusting device, has the beneficial effects of adjustable inner lifting angle of the carrier roller group, dynamic deviation correction ability and stable structure.

[0004] The technical scheme of the utility model is as follows:

[0005] A small horizontal turning curve belt conveyor trough type adjustable lower carrier roller group, comprising a carrier roller group, rollers in the carrier roller group are arranged on a cross beam, further comprising two sections of leg columns arranged vertically, the cross beam is fixed between the two sections of leg columns, and the inclination angle of the cross beam is adjusted by an adjusting device to adjust the inner lifting angle of the carrier roller group; the adjusting device is fixedly connected with the cross beam and the leg column.

[0006] Preferably, the adjusting device comprises adjusting plates on both sides of the cross beam, and the adjusting plates on both sides are connected with different heights on the leg column to adjust the height and the inclination angle of the cross beam.

[0007] Further preferably, a plurality of mounting holes are formed on the leg column from top to bottom, and the adjusting end of the adjusting plate can be connected with different mounting holes.

[0008] Further preferably, the adjusting plate is provided with adjusting holes matched with the mounting holes, and all the adjusting holes are arranged in an arc shape; the mounting hole is connected with different adjusting holes to adapt to the corresponding mounting position of the adjusting plate at different inclination angles of the cross beam; the mounting hole and the adjusting hole are fixed by a fastener.

[0009] Further preferably, the spacing distance between the adjacent mounting holes on each leg column is the same; the mounting holes on the two leg columns are symmetrically arranged; and the inner lifting angle of the adjustable godet set ranges from 0° to 12°.

[0010] Further preferably, the end of the adjusting plate away from the leg column is fixedly connected with one end of the support steel pipe, and the other end of the support steel pipe is penetrated through and fixedly connected with the lower part of the cross beam; the adjusting plates and the support steel pipes on both sides of the cross beam are symmetrically arranged along the median line of the cross beam.

[0011] Further preferably, radial notches are symmetrically formed on both sides of the pipe opening at one end of the support steel pipe, the fixed end of the adjusting plate is inserted into the radial notches and welded thereto, and a steel pipe sealing plate is welded and fixed to the pipe opening to seal the pipe opening; the bottom of the cross beam is fixedly connected with a reinforcing rib.

[0012] Preferably, the bottom of the leg column is fixedly connected with a pre-embedded part arranged in the bottom foundation; the cross beam has a groove structure, and the groove angle is 35° or 45°; an intermediate frame is fixed to the top of the leg column, and the height of the godet set is less than the height of the intermediate frame.

[0013] Further preferably, a side blocking roller is arranged on the lug on one side of the godet set, and the lug is located on the inner arc side of the turning part of the conveying belt; the side blocking roller is perpendicular to the side roller on the same side.

[0014] Further preferably, the front inclination angle of the godet set is 1°-2°.

[0015] Compared with the prior art, the above technical solution has the following beneficial effects:

[0016] (1) The inner arc side of the turning part of the conveying belt is raised by the adjusting device, and the guide force acting on the conveying belt generated by the gravity of the material and the conveying belt and the friction between the godet set and the conveying belt balances the centripetal force generated by the conveying belt tension, so that the conveying belt can stably convey the material and avoid problems such as belt deviation, accelerated wear, and material leakage.

[0017] (2) The side blocking roller is arranged on the inner arc side of the godet set at the turning part of the conveying belt, and the side blocking roller provides a supporting force for the conveying belt through lateral contact, which can effectively offset the centripetal force generated during turning. This structure design can prevent the conveying belt from slipping out of the godet set and being damaged due to insufficient inner lifting angle setting during the adjustment stage, and through the synergistic effect of the adjusting device, the contact between the side blocking roller and the conveying belt at the horizontal turning part during normal operation of the belt conveyor can be reduced, and the wear of the side edge of the conveying belt can be reduced.

[0018] (3) Because the front inclination angle is arranged, when the conveying belt deviates, the lateral friction force is generated between the front inclined roller group and the conveying belt contact surface, the conveying belt is pushed to the center to reset, and the deviation of the conveying belt is avoided.

[0019] (4) The height and inclination angle of the cross beam are adjusted by connecting the adjusting plate with the different height positions on the leg column, so that the different turning radii and the conveying belt tension requirements can be adapted, and the wide applicability is achieved.

[0020] (5) The mounting hole on the leg column is connected with the different adjusting holes on the adjusting plate, so that the corresponding mounting position of the adjusting plate under different inclination angles of the cross beam is adapted. BRIEF DESCRIPTION OF DRAWINGS

[0021] The utility model will be explained in the mode of referring to the drawings, wherein:

[0022] Figure 1 It is the structure schematic drawing of the utility model cross beam inclination arrangement;

[0023] Figure 2 It is Figure 1 It is the structure schematic drawing of the utility model middle L direction;

[0024] Figure 3 It is the overhead view of the utility model whole;

[0025] Figure 4 It is the structure schematic drawing of the utility model cross beam horizontal arrangement;

[0026] Figure 5 It is the structure schematic drawing of the utility model installation side blocking roller;

[0027] Figure 6 It is the structure schematic drawing of the utility model side blocking roller;

[0028] Figure 7 It is the structure schematic drawing of the utility model adjusting plate and support steel pipe connecting place.

[0029] Drawing reference: intermediate roller 11, side roller 12, cross beam 2, support lug 20, recess 21, clamping plate 22, through hole 23, leg column 3, mounting hole 31, intermediate support 32, adjusting plate 4, adjusting hole 41, support steel pipe 42, radial notch 43, steel pipe sealing plate 44, reinforcing rib 45, embedded part 5, bottom foundation 51, installation support 61, center shaft 62, bearing 63, roller body 64. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0031] Embodiment 1: As Figures 1 to 7 shown, a trough-type adjustable lower idler group of a small horizontal turning curve belt conveyor includes an idler group. The idler group includes three rollers. The three rollers are distributed in a "pin" shape on both sides of the cross beam 2 and are arranged parallel to the cross beam 2. The three rollers include a horizontally arranged middle roller 11 and inclined side rollers 12. The middle roller 11 is on one side of the cross beam 2, and the two side rollers 12 are on the other side of the cross beam 2, and the two side rollers 12 are symmetrically arranged. By using a "pin" shape arrangement for the idler group, it can effectively reduce belt scratches, reduce indentation resistance, and improve the stability of the idler group.

[0032] As Figures 2 to 3 shown, the rollers are arranged on the cross beam 2 through the support ears 20 at both ends. The support ears 20 are welded and fixed on the cross beam 2. The middle of the top of the support ear 20 at one end of the roller is recessed downward to form a groove 21. A clamping plate 22 that closely adheres to the side of the support ear 20 is fixed on the upper part of the groove 21 by means of threaded connection. The clamping plate 22 and the groove 21 form a clamping hole. One end of the roller shaft of the roller extends into the clamping hole, and its flat square groove position is clamped in the clamping hole; a through hole 23 is provided at the top of the support ear 20 at the other end of the roller, and the other end of the roller shaft extends into the through hole 23, and its flat square groove position is clamped in the through hole 23. When installing the roller, first extend one end of the roller shaft into the through hole 23, then place the other end of the roller shaft in the groove 21, and then fix the clamping plate 22. This method is not only convenient for installing and disassembling the roller, but also can prevent the roller from falling off when being impacted.

[0033] The two vertical and parallel leg columns 3 are arranged on both sides of the cross beam 2, and the cross beam 2 is arranged between the two leg columns 3 and adjusts the inclination angle of the cross beam 2 by the adjusting device, which adjusts the angle between the cross beam 2 and the horizontal direction, so as to adjust the inner lifting angle of the roller group; the inner lifting angle β2 of the roller group is the angle between the center line of the middle roller 11 and the horizontal plane after the inner side of the roller group at the turning position is lifted, and the inner lifting angle is arranged to lift the inner arc side of the turning position of the conveying belt upward (0° in the case of no turning). The arc-shaped starting point and ending point of the conveying belt at the turning position will form a resultant force pointing to the center of the arc-shaped circle, that is, the centripetal resultant force generated by the tension of the conveying belt, which will cause the conveying belt and the material to deflect to the inner arc side, causing the conveying belt to deviate, the material to leak, and other problems, and the inner arc side of the conveying belt is lifted to generate a guide force on the conveying belt by the gravity of the material and the conveying belt and the friction between the roller group and the conveying belt, and the guide resultant force opposite to the centripetal resultant force can balance the centripetal resultant force generated by the tension of the conveying belt, so that the belt conveyor and the material are stably conveyed.

[0034] Therefore, when the roller group is in the small horizontal turning position of the belt conveyor, the cross beam 2 at the position is reversely inclined, that is, the inclination direction is opposite to the turning direction, so that the inner arc side of the turning position of the conveying belt is lifted upward, and the inner lifting angle of the roller group is calculated and analyzed according to the horizontal turning radius, the center angle, the type and the tension of the belt conveyor, and the inner lifting angle is set to meet the horizontal turning arrangement requirement, so as to avoid the problems of the conveying belt deviation, the material leakage and other problems in the small horizontal turning or the two-way conveying of the material.

[0035] The adjusting device is provided with two groups, which are respectively located on both sides of the cross beam 2, and each group of the adjusting device is fixedly connected with the cross beam 2 and the leg column 3, and is used for fixing the cross beam 2 between the two leg columns 3, so that the roller group on the cross beam 2 can maintain a stable structure.

[0036] In the embodiment 1, the adjusting device is preferably designed, and the adjusting device includes adjusting plates 4 located on both sides of the cross beam 2. The adjusting plates 4 on both sides are connected with different heights on the leg column 3 to adjust the height and the inclination angle of the cross beam 2, that is, when the adjusting plates 4 on both sides are at the same height, the roller group is horizontally arranged, which is suitable for the belt conveyor conveying under the normal no-turning condition or the large turning condition, and when the connecting positions of the adjusting plates 4 on both sides with the leg column 3 are not at the same height, that is, the heights of the two adjusting plates 4 are different, the cross beam 2 fixed between the two adjusting plates 4 is inclined, which is suitable for the belt conveyor conveying under the small horizontal turning or the two-way conveying of the material, and can also adaptively adjust the height of the roller group. Therefore, the slot-type adjustable lower roller group is suitable for the material conveying of the belt conveyor under different conditions, and has wide applicability.

[0037] Specifically, a plurality of mounting holes 31 are formed in the leg column 3 from top to bottom, and the surface of the adjusting plate 4 is attached to the surface of the leg column 3, wherein the adjusting end of the adjusting plate 4 is connected to different mounting holes 31, and the adjusting plate 4 is connected to mounting holes 31 of different heights to adjust the inclination angle and height of the cross beam 2.

[0038] Further, the adjusting plate 4 is provided with adjusting holes 41 matched with the hole size of the mounting hole 31, and all the adjusting holes 41 are arranged in an arc shape. Since the connection distance between the cross beam 2 and the leg column 3 is different when the cross beam 2 is at different inclination angles, the mounting position on the adjusting plate 4 needs to be changed to adapt to the connection distance. The mounting holes 31 are arranged in an arc shape, and the trajectory of the arrangement position is consistent with the trajectory of the mounting position change. Therefore, the mounting holes 31 on the leg column 3 are connected to different adjusting holes 41 on the adjusting plate 4 to adapt to the corresponding mounting position of the adjusting plate 4 at different inclination angles of the cross beam 2. The mounting hole 31 and the adjusting hole 41 are fixed by screw connection, which is connected in a detachable manner, which can not only ensure the stability during connection, but also facilitate the adjustment of different mounting positions.

[0039] In this embodiment, five mounting holes 31 are formed in each leg column 3, and the spacing distance between adjacent mounting holes 31 is the same. The mounting holes 31 on the two leg columns 3 are symmetrically arranged along the vertical center line of the two leg columns 3, which ensures the left-right symmetry of the roller set and the universality of the structure. In this embodiment, the structure can adjust the inner lifting angle β2 of the roller set to 0°-12°, preferably 0°, 6° or 12°. 0° is the normal conveying, and 6° and 12° are the conveying under small angle turning condition. This range can adapt to the material conveying of the belt conveyor under different conditions in most cases, and can also facilitate installation when the mounting hole 31 and the adjusting hole 41 have a normal range of hole deviation.

[0040] Among them, Figure 4 For the structure diagram of the horizontal arrangement of the cross beam 2 at a belt width of 1800mm, A in the figure is the distance between the corresponding mounting holes 31 on the left and right leg columns 3 when the inner lifting angle is 0°, which is 2330.0mm; B in the figure is the distance between the corresponding mounting holes 31 on the left and right leg columns 3 when the inner lifting angle is 6°, which is 23413mm; C in the figure is the distance between the corresponding mounting holes 31 on the left and right leg columns 3 when the inner lifting angle is 12°, which is 2376.9mm. Thus, under different inclination angles, the distance between the corresponding mounting holes 31 is different, and the mounting position on the adjusting plate 4 needs to be adaptively changed.

[0041] Example 3: Based on the above examples, a preferred design is implemented. The adjusting plate 4 and the crossbeam 2 are fixedly connected by a support steel pipe 42. Specifically, the adjusting end of the adjusting plate 4 is connected to the support column 3, and the fixed end is fixedly connected to one end of the support steel pipe 42. The other end of the support steel pipe 42 intersects and is fixedly connected to the lower part of the crossbeam 2. Intersection is a common connection method, which refers to connecting the intersecting parts of two components into a whole to form a rigid connection. The support steel pipe 42 facilitates the fixed connection between the plate-shaped adjusting plate 4 and the crossbeam 2 and maintains the stability of the connection. The fixed support steel pipe 42 is parallel to the middle roller 11 of the idler roller group. The adjusting plates 4 and support steel pipes 42 on both sides of the crossbeam 2 are symmetrically arranged along the vertical line of the crossbeam 2 to ensure the left-right symmetry of the idler roller group and the versatility of the structure.

[0042] Preferred, such as Figure 7 As shown, radial slots 43 are respectively opened on both sides of the pipe opening at one end of the support steel pipe 42. The two radial slots 43 are symmetrically arranged and on the same diameter of the pipe opening. The fixed end of the adjusting plate 4 is inserted into the radial slot 43 and welded to it. A steel pipe sealing plate 44 is also welded to the pipe opening. The steel pipe sealing plate 44 is located on both sides of the adjusting plate 4 and welded to the pipe opening perpendicularly. The steel pipe sealing plate 44 is used to close the pipe opening. This connection method can improve the strength of the connection between the adjusting plate 4 and the support steel pipe 42 and improve the support performance of the idler group. The two sides of the crossbeam 2 are fixed with reinforcing ribs 45 and connected to the support steel pipe 42. The reinforcing ribs 45 are fixed perpendicularly to the support steel pipe 42, which enhances the rigidity and bending resistance of the lifting crossbeam 2, improves the stability of the entire idler frame structure, and further improves the support performance of the idler group.

[0043] Example 4: Based on the above examples, a preferred design is made. The bottom of the support column 3 is fixedly connected to the embedded part 5 set in the bottom foundation 51. The embedded part 5 is a bolt. The top of the bolt passes through the bottom of the support column 3 and is fixed by a nut. This arrangement can maintain the stability of the overall structure.

[0044] The crossbeam 2 has a trough structure with a trough angle β1 of 35° or 45°. Rollers are arranged along the crossbeam 2. The trough angle of the crossbeam 2 can be set according to the bandwidth and trough angle of the idler roller group. The idler roller group arranged on the trough structure crossbeam 2 can better prevent material spillage. The top of the support column 3 is fixed with an intermediate frame 32. The idler roller group is located below the intermediate frame 32. That is, when the inner lifting angle of the idler roller group is adjusted to the maximum, the highest point of the side roller 12 must not exceed the top surface of the intermediate frame 32 to avoid affecting the normal conveying of the idler roller group located above the intermediate frame 32.

[0045] In the preferred design based on the above-mentioned embodiment 1, a side stop roller is arranged on the lug 20 on one side of the roller set, which is located outside the side roller 12 on the inner arc side of the turning roller set; the side stop roller is perpendicular to the side roller 12 on the same side. Specifically, the side stop roller is installed on the lug 20 on one side of the roller set through a mounting bracket 61, which is an L-shaped bracket. One side of the mounting bracket 61 is fixedly connected to the lug 20 through screw connection, and the other side is provided with a central shaft 62 of the side stop roller, one end of the central shaft 62 penetrating through the other side and being fixed between the two sides. A bearing 63 is sleeved on the shaft of the central shaft 62 and fixed thereon, and a roller body 64 is sleeved around the bearing 63 and stably connected to the bearing 63, and can rotate flexibly around the bearing 63, wherein the roller body 64 is perpendicular to the side roller 12 installed on the same lug 20. During the turning of the conveying belt, if the lifting angle of the inner arc side of the roller set is not enough, the centripetal force generated by the tension of the conveying belt is still greater than the guiding force, and the conveying belt will still deviate to the inner arc side. At this time, the side stop roller provides a lateral support force for the conveying belt by contacting the side surface of the conveying belt, which limits the conveying belt from running out of the roller set and ensures the stability of the conveying belt during the turning, thereby preventing the conveying belt from deviating. Therefore, the side stop roller only needs to be installed on the lug 20 on the inner arc side of the turning of the conveying belt. The arrangement and angle of the side stop roller can be adjusted according to the turning radius of the conveyor. In the design of the turning section of the belt conveyor, high-density side stop rollers are arranged in the small-radius section to increase the contact frequency and improve the lateral support stiffness, so as to ensure the uniform distribution of the load of the conveying belt and prevent abnormal wear caused by stress concentration; and sparse roller arrangement strategy can be implemented in the large-radius section. By setting the appropriate inner lifting angle of the roller set, the contact frequency of the side stop roller and the edge of the conveying belt can be effectively reduced, and the lateral friction loss can be effectively controlled.

[0046] Further, the front inclination angle β3 of the roller set is 1°-2°. The front inclination angle refers to the angle between the axis of the side roller 12 on both sides of the roller set and the longitudinal center line of the conveyor (generally inclined forward). When installing the lug 20 on which the side roller 12 is arranged, the front inclination angle β3 of the placed side roller 12 needs to be ensured to be in the range of 1°-2°. When the conveying belt deviates, the side friction force generated by the contact surface between the forward-tilted roller set and the conveying belt pushes the conveying belt to reset to the center. The front inclination angle in this range can reduce the sliding of the material on the conveying belt, improve the conveying efficiency of the material, and more importantly, offset the partial transverse displacement of the conveying belt to avoid the deviation of the conveying belt.

[0047] The above embodiments only express the specific implementation of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the protection scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the technical concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application.

Claims

1. A group of adjustable lower idlers of a trough of a small horizontal turn curve belt conveyor, comprising a group of idlers, the rollers in the group of idlers being arranged on a crossbeam (2), characterized in that: The two vertical two-section supporting column (3) is arranged, the crossbeam (2) is fixed between the two-section supporting column (3), and the crossbeam (2) is adjusted to adjust the inner lifting angle of the roller group through the adjusting device; the adjusting device is fixedly connected with the crossbeam (2) and the supporting column (3).

2. A group of adjustable lower rollers for a trough of a small horizontal turn curve belt conveyor according to claim 1, characterized in that: The adjusting device comprises adjusting plates (4) arranged on both sides of the crossbeam (2), wherein the adjusting plates (4) on both sides are connected with different positions on the supporting column (3) at different heights to adjust the height and the inclination angle of the crossbeam (2).

3. A group of adjustable lower rollers for a trough of a small horizontal turn curve belt conveyor according to claim 2, characterized in that: A plurality of mounting holes (31) are arranged on the supporting column (3) from top to bottom, and the adjusting end of the adjusting plate (4) can be connected with different mounting holes (31).

4. A group of adjustable lower rollers of a trough of a small horizontal turn curve belt conveyor according to claim 3, characterized in that: The adjusting plate (4) is provided with adjusting holes (41) matched with the mounting holes (31), and all the adjusting holes (41) are arranged in an arc shape; the mounting hole (31) is connected with different adjusting holes (41) to adapt to the mounting position of the adjusting plate (4) at different inclination angles of the crossbeam (2); the mounting hole (31) and the adjusting hole (41) are fixed by a fastener.

5. A group of adjustable lower rollers for a trough of a small horizontal turn curve belt conveyor according to claim 4, characterized in that: The interval distance between the adjacent mounting holes (31) on each supporting column (3) is the same; the mounting holes (31) on the two supporting columns (3) are symmetrically arranged; wherein the inner lifting angle of the roller group can be adjusted in the range of 0°-12°.

6. A group of adjustable lower rollers of a trough of a small horizontal turn curve belt conveyor according to any of claims 2-5, characterized in that: The end of the adjusting plate (4) away from the supporting column (3) is fixedly connected with one end of a bracket steel pipe (42), the other end of the bracket steel pipe (42) is penetrated and fixedly connected with the lower part of the crossbeam (2); the adjusting plates (4) and the bracket steel pipes (42) on both sides of the crossbeam (2) are symmetrically arranged along the median line of the crossbeam (2).

7. A group of adjustable lower rollers of a trough of a small horizontal turn curve belt conveyor according to claim 6, characterized in that: Radial slots (43) are symmetrically arranged on both sides of the pipe opening of one end of the bracket steel pipe (42), the fixed end of the adjusting plate (4) is inserted into the radial slots (43) and is welded and fixed; a steel pipe sealing plate (44) is welded and fixed on the pipe opening, and the steel pipe sealing plate (44) seals the pipe opening; the bottom of the crossbeam (2) is fixed with a reinforcing rib (45) connected with the bracket steel pipe (42).

8. A group of adjustable lower rollers for a trough of a small horizontal curve belt conveyor according to claim 1, characterized in that: The bottom of the supporting column (3) is fixedly connected with a pre-embedded part (5) arranged in the bottom base (51); the crossbeam (2) has a groove structure, and the groove angle is 35° or 45°; the top of the supporting column (3) is fixed with an intermediate frame (32), and the height of the roller group is less than the height of the intermediate frame (32).

9. A group of adjustable lower rollers of a trough of a small horizontal turn curve belt conveyor according to claim 8, characterized in that: A side blocking roller is arranged on the lug (20) on one side of the roller group, and the lug (20) on the side is located on the inner arc side of the conveying belt turning part; the side blocking roller is perpendicular to the side roller (12) on the side.

10. A group of adjustable lower rollers of a trough of a small horizontal turn curve belt conveyor according to claim 9, characterized in that: The front inclination angle of the roller group is 1°-2°.

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