A load-bearing roller assembly for a middle roller step shaft

Abstract

The utility model provides a bearing roller group of a middle roller step shaft, belonging to the technical field of belt conveyors, comprising a bearing roller bracket, wherein two middle pillars are arranged in the middle of the bearing roller bracket, a middle roller is rotatably mounted between the two middle pillars, the middle roller comprises a roller shaft, the middle of the roller shaft is arranged as a thickened shaft, a roller tube is sleeved on the outer side of the thickened shaft, a stamping seat, an enlarged bearing, and an enlarged sealing kit are sequentially installed axially from the inside to the outside between the inner wall of the end of the roller tube and the outer wall of the end of the thickened shaft, shaft slots are arranged at both ends of the roller shaft, and steps are arranged between the side walls of the shaft slot and the side walls of the thickened shaft. The beneficial effect of the utility model is that it can achieve the purpose of extending the service life of the middle roller and the entire bearing roller group on the belt conveyor, and reduce the corresponding maintenance frequency.

Description

Technical Field

[0001] The utility model belongs to the technical field of belt conveyors, and in particular relates to a load-bearing roller group of a middle roller step shaft. Background Art

[0002] With the development of social economy, related industries have higher and higher requirements for belt conveyors, and belt conveyors with large transport capacity and long distance have gradually become the development trend of the industry.

[0003] At present, the structure of common belt conveyors mainly consists of a frame, a roller frame, rollers, belts, rollers, motors and reducers. Among them, the frame is a long steel frame, and multiple roller frames are fixedly installed in sequence along the length of the frame. Rollers are installed on the roller frame, and the belts are placed above the rollers. The rollers are located at both ends of the frame. The motor and reducer are connected to the rollers, and the belts are wrapped around the rollers at both ends of the frame. When it is used, the motor and reducer are mainly used to drive the rollers to rotate, and the rollers drive the belts to move on the rollers, thereby realizing the material conveying operation.

[0004] However, the existing belt conveyors still have certain defects when in use: the load-bearing rollers in the existing standard version of the belt conveyor will use three identical rollers, but in the actual operation process, the force on the middle roller at the middle position accounts for about 60% of the total material weight, and the force on the two side rollers at the two ends accounts for only 40% of the total material weight. Therefore, the middle roller will have a higher failure rate and frequent replacement in actual operation, which will affect the normal operation of the entire belt conveyor. Utility Model Content

[0005] The purpose of the utility model is to propose and design a load-bearing roller group of a middle roller step shaft in view of the high failure rate and frequent replacement of the middle rollers in the existing belt conveyor when in use, so as to overcome the above technical problems and greatly improve the service life of the middle rollers and the entire load-bearing roller group on the belt conveyor.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a bearing roller group of a middle roller step shaft, which includes a bearing roller bracket, two middle pillars are arranged in the middle of the bearing roller bracket, a middle roller is rotatably installed between the two middle pillars, the middle roller includes a roller shaft, the middle part of the roller shaft is arranged as a thickened shaft, a roller tube skin is sleeved on the outer side of the thickened shaft, a stamping seat, an enlarged bearing, and an enlarged sealing kit are successively installed axially from the inside to the outside between the inner wall of the end of the roller tube skin and the outer wall of the end of the thickened shaft, shaft grooves are arranged at both ends of the roller shaft, and steps are arranged between the side walls of the shaft grooves and the side walls of the thickened shaft. Based on this, since the utility model thickens the shaft of the middle roller in the entire load-bearing roller group and enlarges the bearing, it can achieve the purpose of extending the service life of the middle roller and the entire load-bearing roller group on the belt conveyor and reduce the corresponding maintenance frequency; at the same time, since the utility model provides a step at the shaft groove at the end of the middle roller, the middle roller in the utility model can still adopt a standard shaft groove structure on the market, and the middle roller in the utility model can still adopt a standard load-bearing roller bracket on the market or retain the original load-bearing roller bracket, thereby reducing replacement costs.

[0007] Furthermore, side supports are provided at both ends of the bearing roller bracket, and side rollers are rotatably installed between the corresponding side supports and the middle support, and the two side rollers preferably use DTⅡ standard rollers, and the bearing roller bracket preferably uses DTⅡ standard roller bracket.

[0008] Furthermore, the angle between the axis of the side roller and the axis of the middle roller is 35 degrees.

[0009] Furthermore, a roller slot 1 is provided at the upper end of the side pillar, and the side pillar supports the side roller via the roller slot 1; a roller slot 2 is provided at the upper end of the middle pillar, and the middle pillar supports the side roller and the middle pillar via the roller slot 2; a notch 1 is provided at the lower end of the side pillar, and a notch 2 is provided at the lower end of the middle pillar, and the side pillar and the middle pillar are fixedly connected to the crossbeam via the notch 1 and the notch 2 respectively, and the connection method is preferably welding.

[0010] Furthermore, the side support is an integral bent piece, and is preferably formed by bending U-shaped steel.

[0011] Furthermore, the middle pillar is an integral bent piece, and is preferably formed by bending a steel plate.

[0012] It can be seen from the above technical solutions that the utility model has the following advantages:

[0013] 1. The utility model increases the diameter of the roller shaft of the middle roller, thereby increasing the bearing model, thereby increasing the service life of the middle roller and reducing the maintenance frequency of the equipment;

[0014] 2. The utility model can still use a standard load-bearing roller bracket or retain the original load-bearing roller bracket. Only the middle roller needs to be replaced to reduce the overall maintenance frequency and the replacement cost;

[0015] 3. The interchangeability is very good. Even the side rollers can use the rollers with this variable diameter roller shaft, which effectively reduces the inventory of the belt conveyor running unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a front view of a specific implementation mode of the utility model;

[0018] Figure 2 It is a side view of a specific embodiment of the utility model;

[0019] Figure 3 It is a cross-sectional view of the middle roller in the utility model;

[0020] Figure 4 This is a front view of the support roller bracket in the utility model;

[0021] Figure 5 It is a schematic diagram of the expansion of the side pillars in the utility model;

[0022] Figure 6 It is a schematic diagram of the expansion of the middle pillar in the utility model.

[0023] In the figure: 1, middle roller; 2, side roller; 3, bearing roller bracket; 11, roller shaft; 12, enlarged bearing; 13, enlarged sealing kit; 14, stamping seat; 15, roller tube skin; 111, shaft slot; 112, step; 113, thickened shaft; 31, side support; 32, middle support; 33, crossbeam; 34, bottom plate; 311, roller slot one; 312, notch one; 313, bending line one; 321, notch two; 322, roller slot two; 323, bending line two. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figures 1 to 6 As shown, the utility model provides a bearing roller group of a middle roller step shaft, which includes a bearing roller bracket 3, and the bearing roller bracket 3 preferably adopts a DTⅡ standard roller bracket. Specifically, the bearing roller bracket 3 includes a crossbeam 33, and the crossbeam 33 is preferably made of angle steel with an opening facing downward, and a bottom plate 34 is arranged below both ends of the crossbeam 33, and a side support 31 is arranged above each of the two ends of the crossbeam 33, and two middle supports 32 are arranged above the middle part of the crossbeam 33, and the side rollers 2 are rotatably installed between the two middle supports 32 and the corresponding side supports 31, and the middle roller 1 is rotatably installed between the two middle supports 32.

[0026] Among them, the side support column 31 is preferably an integral bent part formed by bending U-shaped steel, and the upper end of the side support column 31 is provided with a roller clamping groove 311 for placing and supporting the side roller, and the lower end of the side support column 31 has a 90° notch 312 for clamping on the top of the cross beam 33, and the lower end of the side support column 31 can be welded to the cross beam 33 through the notch 312; the upper end of the side support column 31 can be bent 35° along a bending line 313 to form a corresponding integral bent structure.

[0027] The middle pillar 32 is preferably an integral bent piece formed by bending a steel plate, and the upper and lower ends of the middle pillar 32 in the unfolded state each have a 90° notch 321, and a roller clamping groove 322 for placing the middle roller 1 and the side roller 2 is provided at the middle position; and the middle pillar 32 can be bent along two bending lines 323 to form an integral bent structure with a roller clamping groove 322 provided at the upper end and a notch 321 provided at the lower end.

[0028] The middle roller 1 includes a roller shaft 11, the middle part of the roller shaft 11 is set as a thickened shaft 113, and the outer side of the thickened shaft 113 is sleeved with a roller shell 15, and a stamping seat 14, an enlarged bearing 12, and an enlarged sealing kit 13 are installed in sequence from the inside to the outside along the axial direction between the inner wall of the end of the roller shell 15 and the outer wall of the end of the thickened shaft 113, and standard-sized shaft grooves 111 are set at both ends of the roller shaft 11, and steps 112 are set between the side walls of the shaft groove 111 and the side walls of the thickened shaft 113.

[0029] The angle between the axis of the side roller 2 and the axis of the middle roller 1 is 35 degrees, and the two side rollers 2 are preferably DTⅡ standard rollers.

[0030] In this way, since the utility model thickens the shaft of the middle roller 1 in the entire load-bearing roller group and enlarges the bearing, it can achieve the purpose of extending the service life of the middle roller 1 and the entire load-bearing roller group on the belt conveyor and reduce the corresponding maintenance frequency; at the same time, since the utility model provides a step 112 at the shaft groove 111 at the end of the middle roller 1, the middle roller 1 in the utility model can still adopt a standard shaft groove structure on the market, and the middle roller 1 in the utility model can still adopt a standard load-bearing roller bracket on the market or retain the original load-bearing roller bracket, thereby reducing replacement costs.

[0031] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present utility model and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions.

[0032] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bearing roller group of a middle roller step shaft, comprising a bearing roller bracket, wherein two middle pillars are arranged in the middle of the bearing roller bracket, and a middle roller is rotatably mounted between the two middle pillars; characterized in that: The middle roller includes a roller shaft, the middle part of which is a thickened shaft, a roller shell is sleeved on the outer side of the thickened shaft, a stamping seat, an enlarged bearing and an enlarged sealing kit are sequentially installed axially from the inside to the outside between the inner wall of the end of the roller shell and the outer wall of the end of the thickened shaft, shaft grooves are provided at both ends of the roller shaft, and steps are provided between the side walls of the shaft groove and the side walls of the thickened shaft.

2. The load-bearing roller group of the middle roller step shaft according to claim 1 is characterized in that: Side supports are arranged at both ends of the supporting roller bracket, and side rollers are rotatably installed between the corresponding side supports and the middle support.

3. The bearing roller assembly of the middle roller step shaft according to claim 2 is characterized in that: The angle between the axis of the side roller and the axis of the middle roller is 35 degrees.

4. The bearing roller assembly of the middle roller step shaft according to claim 2 is characterized in that: The upper end of the side support is provided with a roller slot 1, and the side support supports the side roller through the roller slot 1; the upper end of the middle support is provided with a roller slot 2, and the middle support supports the side roller and the middle support through the roller slot 2; the lower end of the side support is provided with a notch 1, and the lower end of the middle support is provided with a notch 2, and the side support and the middle support are fixedly connected to the crossbeam through the notch 1 and the notch 2 respectively.

5. The bearing roller assembly of the middle roller step shaft according to claim 4 is characterized in that: The side support is an integral bent part.

6. The bearing roller assembly of the middle roller step shaft according to claim 4, characterized in that: The middle support column is an integral bent part.

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