CN219791516U - Brush shaft assembly and belt conveyor - Google Patents

Abstract

The utility model discloses a brush shaft assembly and a belt conveyor, wherein the brush shaft assembly comprises: the two ends of the long shaft are respectively connected with the first short shaft and the second short shaft, the two ends of the long shaft are respectively provided with a hexagonal platform shaft head, one end of the first short shaft connected with the long shaft is provided with a first hexagonal shaft hole, and one end of the second short shaft connected with the long shaft is provided with a second hexagonal shaft hole, and the hexagonal platform shaft head is matched with the first hexagonal shaft hole and the second hexagonal shaft hole. The radial clearance at the matching part can be eliminated, excessive matching is further achieved, coaxiality of the long shaft after matching with the first short shaft and the second short shaft is guaranteed to be higher, the matching clearance is smaller, abrasion is reduced, the installation difficulty is reduced, and the assembly efficiency is improved. The belt conveyor comprises a frame, a tensioning device, rollers, a conveyor belt, a cleaning device and a driving device, wherein the cleaning device comprises a brush shaft assembly. The probability of occurrence of problems such as abrasion, vibration and abnormal sound of the belt conveyor can be reduced.

Description

Brush shaft assembly and belt conveyor

Technical Field

The utility model relates to the technical field of conveying equipment, in particular to a hairbrush shaft assembly and a belt conveyor.

Background

The belt conveyor is a device for continuously conveying materials, is an indispensable conveying device for forming a production line, has wide application, and is used for continuously conveying tobacco materials in the tobacco industry. The belt conveyor comprises a tensioning device, rollers, a conveying belt, a cleaning device, a driving device and the like, wherein the cleaning device comprises a brush roller, a brush shaft assembly, a bearing seat and the like. The brush shaft assembly comprises a long shaft and two short shafts, the long shaft is inserted into the brush roller, and the two short shafts are respectively arranged at two ends of the long shaft.

In the prior art, square columns are usually arranged at two ends of a long shaft, a square hole is formed in one end, connected with the long shaft, of the short shaft, and the long shaft is connected with the short shaft through the square columns and the square holes in a matched mode. When the belt conveyor runs, the brush roller is contacted with the conveyor belt, the conveyor belt can generate acting force on the brush shaft assembly, and the long shaft and the short shaft can also generate downward acting force due to the gravity of the brush roller, so that deflection can be generated on the shaft line. However, the cooperation of square post and square hole is clearance fit, and the brush roller can accelerate the wearing and tearing of square post and square hole when rotatory, can cause equipment to appear vibrating and abnormal sound simultaneously, still can influence spare part's life to the clearance is bigger wearing and tearing faster, can finally lead to square post and square hole cooperation inefficacy. In addition, when the major axis is connected with the minor axis cooperation at both ends, because be square column and square hole butt joint, difficult alignment when the installation is difficult for inserting, lead to spare part to slide easily, cause man-machine damage easily, the security risk is high to owing to the assembly degree of difficulty is big, has increased assembly personnel's work load and maintenance cost, and the economic nature is poor.

In view of the foregoing, it is a problem to be solved by those skilled in the art to provide a brush shaft assembly that is tightly fitted and easy to install.

Disclosure of Invention

Accordingly, it is an object of the present utility model to provide a brush shaft assembly and a belt conveyor, which are tightly fitted and easily installed, and which can increase the service life of the belt conveyor.

In order to achieve the above object, the present utility model provides the following technical solutions:

a brush shaft assembly comprising: the novel structure comprises a long shaft, a first short shaft and a second short shaft, wherein the two ends of the long shaft are respectively connected with the first short shaft and the second short shaft, six-edged table shaft heads are arranged at the two ends of the long shaft, a first six-edged shaft hole is formed in one end, connected with the long shaft, of the first short shaft, a second six-edged shaft hole is formed in one end, connected with the long shaft, of the second short shaft, and the six-edged table shaft heads are matched with the first six-edged shaft hole and the second six-edged shaft hole.

A first adjusting part is arranged between the bottom surface of the hexagonal frustum head and the end surfaces of the first short shaft and the second short shaft.

A second adjusting part is arranged between the bottom surfaces of the first hexagonal axle hole and the second hexagonal axle hole and the top surface of the hexagonal platform axle head.

The brush shaft assembly comprises a six-edged platform shaft head, a first six-edged shaft hole and edges of a second six-edged shaft hole are respectively provided with a chamfer.

A brush shaft assembly is characterized in that inclination angles are arranged between the side wall of the hexagonal platform shaft head, the inner walls of the first hexagonal shaft hole and the second hexagonal shaft hole and a horizontal plane.

A brush shaft assembly is provided, wherein the cross section of the hexagonal frustum head is in a regular hexagon shape.

The brush shaft assembly is in transition fit with the first hexagonal shaft hole and the second hexagonal shaft hole.

A belt conveyor comprising a frame, a tensioning device, rollers, a conveyor belt, a cleaning device comprising a brush shaft assembly as described above, and a driving device.

Against the background, the present utility model provides a brush shaft assembly comprising: the two ends of the long shaft are respectively connected with the first short shaft and the second short shaft, the two ends of the long shaft are respectively provided with a hexagonal platform shaft head, one end of the first short shaft connected with the long shaft is provided with a first hexagonal shaft hole, and one end of the second short shaft connected with the long shaft is provided with a second hexagonal shaft hole, and the hexagonal platform shaft head is matched with the first hexagonal shaft hole and the second hexagonal shaft hole.

The cooperation of major axis and first minor axis, second minor axis is realized through the cooperation in six prismatic table spindle heads and first six prismatic shaft holes, six prismatic shaft holes of second, and the fitting surface after spindle head and shaft hole assembly can laminate completely, can eliminate the radial clearance at cooperation position, and then reaches excessive cooperation, has guaranteed that the axiality after major axis and first minor axis, the cooperation of second minor axis is higher and the cooperation clearance is littleer, reduces wearing and tearing, prevents that the abrasive dust from falling into the material, influences product quality. In addition, the major axis is in the initial stage of complex with first minor axis, second minor axis, and the great one end of six prismatic platform spindle nose cross-sectional areas inserts first six prismatic shaft holes or second six prismatic shaft holes cross-sectional areas earlier, and the cross-sectional area size of both is big, is favorable to the spindle nose to insert the shaft hole when the installation like this, can automatic alignment between the mating surface of after inserting both, cooperates, has improved the work efficiency of assembly, has reduced the installation risk.

The belt conveyor provided by the utility model comprises a frame, a tensioning device, rollers, a conveying belt, a cleaning device and a driving device, wherein the cleaning device comprises a hairbrush shaft assembly. The coaxiality of the long shaft, the first short shaft and the second short shaft after being matched is higher, the matching clearance is smaller, and the abrasion is reduced. And when the hairbrush shaft assembly is assembled, through rotating the bearing seat on the second short shaft, the fit clearance between parts of the belt conveyor can be eliminated, the probability of occurrence of problems such as abrasion, vibration and abnormal sound of the belt conveyor is reduced, the assembly difficulty of the hairbrush shaft assembly is low, the workload and maintenance cost of assembly personnel are reduced, and the hairbrush shaft assembly has good practicability and economy.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a view showing a structure of a brush shaft assembly according to the present utility model;

FIG. 2 is a schematic view of a first stub shaft provided by the present utility model;

FIG. 3 is a schematic view of a second stub shaft provided by the present utility model;

FIG. 4 is a schematic view of a long axis provided by the present utility model;

fig. 5 is a schematic view of a first short axis and long axis connection provided by the present utility model.

Wherein:

1-long shaft, 11-hexagonal platform spindle nose, 12-first adjustment portion, 2-first minor axis, 21-first hexagonal axle hole, 3-second minor axis, 31-second hexagonal axle hole, 4-second adjustment portion, 5-keyway, 6-retaining ring slot.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The present utility model will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present utility model.

Embodiments of the present utility model provide a bristle brush shaft assembly, referring to fig. 1 to 5 of the accompanying drawings, including: the two ends of the long shaft 1 are respectively connected with the first short shaft 2 and the second short shaft 3, the six-edged table shaft heads 11 are arranged at the two ends of the long shaft 1, a first six-edged shaft hole 21 is arranged at one end of the first short shaft 2 connected with the long shaft 1, a second six-edged shaft hole 31 is arranged at one end of the second short shaft 3 connected with the long shaft 1, and the six-edged table shaft heads 11 are matched with the first six-edged shaft hole 21 and the second six-edged shaft hole 31.

The combined brush shaft is arranged in the cleaning device of the belt conveyor, and the cleaning device mainly comprises a chain wheel, the combined brush shaft, a brush roller, a retainer ring, a bearing seat, a bearing and the like. The long shaft 1 is inserted into the brush roller, the two ends of the brush roller are provided with check rings, and jackscrews and pins are arranged on the check rings and used for synchronously rotating the brush roller on the brush shaft assembly. The combined brush shaft can be specifically set to be 40Cr steel and consists of three parts, wherein the combined brush shaft comprises a long shaft 1, a first short shaft 2 and a second short shaft 3, six-edged table shaft heads 11 are arranged at two ends of the long shaft 1, the six-edged table shaft heads 11 at one end are connected with a first six-edged shaft hole 21 in the first short shaft 2 in a matched mode, the six-edged table shaft heads 11 at the other end are connected with a second six-edged shaft hole 31 in the second short shaft 3 in a matched mode, a key groove 5 and a check ring groove 6 are further arranged on the first short shaft 2, the check ring groove 6 is further arranged on the second short shaft 3, the key groove 5 is connected with a chain wheel, and a check ring is arranged on the check ring groove 6 and used for fixing a bearing.

After the long shaft 1 is assembled with the first short shaft 2 and the second short shaft 3, the matching surfaces of the long shaft 1 and the first short shaft 2 and the second short shaft 3 can be completely attached, so that the radial clearance of the matching part can be eliminated, the coaxiality of the long shaft 1 after being matched with the first short shaft 2 and the second short shaft 3 is ensured to be higher, the matching clearance is smaller, and the abrasion is reduced. The major axis 1 and the first minor axis 2, the second minor axis 3 are in the complex initial stage, and the less one end of hexagonal platform spindle nose 11 cross-sectional area inserts first hexagonal shaft hole 21 or the great one end of second hexagonal shaft hole 31 cross-sectional area earlier, inserts and can align voluntarily between the mating surface in back spindle nose and shaft hole, has reduced the degree of difficulty of assembly, can improve the work efficiency of assembly, reduces the installation risk simultaneously.

A first adjusting part 12 is arranged between the bottom surface of the hexagonal platform shaft head 11 and the end surfaces of the first short shaft 2 and the second short shaft 3. A second adjusting part 4 is arranged between the bottom surfaces of the first hexagonal shaft hole 21 and the second hexagonal shaft hole 31 and the top surface of the hexagonal platform shaft head 11.

The reason for providing the first adjusting portion 12 and the second adjusting portion 4 is that when machining errors occur in the length direction of the land or the hole, the first adjusting portion 12 and the second adjusting portion 4 can compensate for the errors, ensure that the fit clearance meets the requirements, and reduce wear. In addition, after the long shaft 1 is matched with the first short shaft 2 and the second short shaft 3, if the terrace or the hole is worn in an initial stage in the running process, a gap is generated, the gap can be eliminated by screwing in the bearing seat with the external threads on the second short shaft 3, the bearing seat can be used continuously, the service life is prolonged, in general, the external threads with the bearing seat are screwed into three quarters, and one quarter of the threads are reserved for compensating the machining error of the brush shaft assembly or the position error of the frame. In the specific embodiment provided by the utility model, the lengths of the six-edged platform shaft head 11, the first six-edged shaft hole 21 and the second six-edged shaft hole 31 are all 30 mm, wherein the matching length of the shaft head and the shaft hole is 25 mm, and the lengths of the first adjusting part 12 and the second adjusting part 4 are all 5 mm, and of course, the specific lengths of the first adjusting part 12, the second adjusting part 4, the six-edged platform shaft head 11, the first six-edged shaft hole 21 and the second six-edged shaft hole 31 can be set according to practical situations, and are not limited herein.

The edges of the hexagonal platform shaft head 11, the first hexagonal shaft hole 21 and the second hexagonal shaft hole 31 are provided with chamfers. The chamfering comprises chamfering and rounding, and aims to remove burrs on the part due to machining and also to facilitate assembly of the part. The chamfering is to cut the edge of the part into a certain inclined plane along the angles of 30 degrees, 45 degrees and 60 degrees, and the chamfering is to cut the edge of the part into a certain arc surface according to the dimensions of 1 millimeter, 2 millimeters and the like. In the specific embodiment provided by the utility model, edges of the hexagonal platform shaft head 11, the first hexagonal shaft hole 21 and the second hexagonal shaft hole 31 are rounded according to the radius of 1 millimeter.

The side walls of the hexagonal platform shaft head 11, the inner walls of the first hexagonal shaft hole 21 and the second hexagonal shaft hole 31 are all provided with inclination angles with the horizontal plane. Taking the specific embodiment provided by the utility model as an example, the included angle between the side wall of the hexagonal frustum head 11 and the horizontal plane is 5 degrees, the larger the inclination angle is, the smaller the radial force bearable by the matching part is, the breakage is easy to occur, the smaller the inclination angle is, the smaller the circumferential force bearable by the matching part is, and the matching part is easy to wear.

The cross section of the hexagonal frustum head 11 is set to be regular hexagon. In the specific embodiment provided by the utility model, the shaft head of the brush shaft assembly is matched with the shaft hole by adopting the matching between the regular hexagonal frustum and the hole, and the reason for selecting the hexagonal frustum is that the more the number of the hexagonal frustum is, the worse the circumferential stress is, and the abrasion is easy, the closer the circumference Xiang Yue is to a circle. When the prismatic table is assembled with the prismatic table-shaped inner hole, the number is large, the number is small, the number is easy to load, the even number is selected for being convenient to process relative to the odd number, therefore, the number of the prismatic tables of the shaft head is comprehensively considered to select six, the shaft head is selected for the regular hexagonal prismatic table, the cross section is regular hexagon, and the stress on each side is more uniform.

The hexagonal platform shaft head 11 is in transition fit with the first hexagonal shaft hole 21 and the second hexagonal shaft hole 31. The transition fit means the fit which may have a gap or interference, the tolerance zone of the hole and the tolerance zone of the shaft overlap each other, and by the transition fit, compared with the clearance fit of the prior art square column and the square hole with the clearance reserved 0.5 mm, by the fit between the hexagonal platform shaft head 11 and the first hexagonal shaft hole 21 and the second hexagonal shaft hole 31, the fit clearance can be reduced, and the abrasion can be reduced.

The belt conveyor provided by the embodiment of the utility model comprises a frame, a tensioning device, rollers, a conveying belt, a cleaning device and a driving device, wherein the cleaning device comprises the hairbrush shaft assembly. Through the cooperation of hexagonal platform spindle nose 11 and first hexagonal shaft hole 21, second hexagonal shaft hole 31, can guarantee that axiality after major axis 1 and first minor axis 2, the cooperation clearance is bigger, the reduction wearing and tearing after the cooperation of second minor axis 3. And when the brush shaft assembly is assembled, the bearing seat on the second short shaft 3 is rotated, so that the fit clearance between parts of the belt conveyor can be eliminated, and the probability of occurrence of problems such as abrasion, vibration and abnormal sound of the belt conveyor is reduced.

It should be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.

The brush shaft assembly and the belt conveyor according to the present utility model are described in detail above. The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (8)

1. A brush shaft assembly, comprising: major axis (1), first minor axis (2) and second minor axis (3), the both ends of major axis (1) respectively with first minor axis (2) second minor axis (3) are connected, the both ends of major axis (1) all are equipped with six prismatic table spindle nose (11), first minor axis (2) with the one end that major axis (1) is connected is equipped with first six prismatic shaft hole (21), second minor axis (3) with the one end that major axis (1) is connected is equipped with six prismatic shaft hole (31) of second, six prismatic table spindle nose (11) with six prismatic shaft hole (21) of first six prismatic shaft hole (31) looks adaptation of second.

2. A brush shaft assembly according to claim 1, characterized in that a first adjustment portion (12) is provided between the bottom surface of the hexagonal frustum head (11) and the end surfaces of the first stub shaft (2) and the second stub shaft (3).

3. A brush shaft assembly according to claim 2, wherein a second adjustment portion (4) is provided between the bottom surfaces of the first and second hexagonal shaft holes (21, 31) and the top surface of the hexagonal mesa shaft head (11).

4. A brush shaft assembly according to claim 1, characterized in that the edges of the hexagonal counter head (11), the first hexagonal shaft hole (21) and the second hexagonal shaft hole (31) are provided with chamfers.

5. A brush shaft assembly according to claim 1, characterized in that the side walls of the hexagonal mesa stub shaft (11), the inner walls of the first hexagonal shaft hole (21) and the second hexagonal shaft hole (31) are each provided with an inclination angle with respect to the horizontal plane.

6. A brush shaft assembly according to claim 5, characterized in that the cross section of the hexagonal frustum head (11) is provided as a regular hexagon.

7. A brush shaft assembly according to claim 1, wherein the hexagonal mesa stub shaft (11) and the first (21) and second (31) hexagonal shaft holes are transition fitted.

8. A belt conveyor comprising a frame, a tensioning device, rollers, a conveyor belt, a cleaning device comprising a brush shaft assembly according to any of claims 1-7, and a drive device.