CN215410009U

CN215410009U - Novel belt tensioning device

Info

Publication number: CN215410009U
Application number: CN202121589381.3U
Authority: CN
Inventors: 李渊; 李伯平
Original assignee: Nanjing Huabai New Material Co ltd
Current assignee: Nanjing Huabai New Material Co ltd
Priority date: 2021-04-01
Filing date: 2021-07-13
Publication date: 2022-01-04
Anticipated expiration: 2031-07-13

Abstract

The utility model discloses a novel belt tensioning device, which comprises a platform frame and a belt, wherein a first support column and a second support column are arranged at the lower side of the platform frame, a driving roller and a first driving roller are symmetrically arranged at the upper end in the platform frame, a second driving roller is symmetrically arranged between the driving roller and the first driving roller, a tensioning roller is arranged between the second driving roller and the first driving roller, a cavity is arranged in the second support column, an air cylinder is arranged in the cavity, a supporting plate and a tensioning spring are sequentially fixed at the upper end of a driving shaft of the air cylinder, the upper end of the tensioning spring is fixedly connected with the tensioning roller, and the upper end and the lower end of the supporting plate are respectively provided with an upper limit position and a lower limit position; the problem of unreasonable in current belt tensioning design, maintain the belt in the tensile force range of relative reasonable, ensure belt operation life, avoid the unexpected shut down that the belt life-span shortens, belt fracture leads to is solved.

Description

Novel belt tensioning device

Technical Field

The utility model relates to the field of belt tensioning adjustment, in particular to a novel belt tensioning device.

Background

In order to ensure that the belt of the conveyor can be stably started, operated and braked, the tensioning device needs to give a certain tensioning force to the belt, and enough friction force between the belt and the driving shaft is ensured, so that the belt does not slip. Common tensioning devices are of the type of hydraulic automatic tensioning devices, fixed tensioning devices, movable tensioning devices and the like;

the fixed type tensioning device has limited tensioning distance and cannot be automatically adjusted along with the variation of the tensioning force, the tensioning force of the belt is usually higher when the tensioning device starts to operate, and the belt has certain plastic deformation along with the increase of the operation time of the belt, the length of the belt is increased, and the tensioning force is reduced; the movable tensioning device can ensure that the belt is under a certain tensioning force, and the tensioning force of the adhesive tape is not required to be adjusted frequently by operation and maintenance personnel. Although the movable tensioning device also has the problem of overlarge tensioning force, the whole tensioning device has an obvious tensioning effect compared with a fixed tensioning device, but also has the problem of more complicated structure of the tensioning device;

the hydraulic automatic tensioning device avoids the defects of fixed and movable tensioning devices, and can adjust the tensioning force in real time according to the change of a belt.

In current belt transmission system, the tensioning design of belt is either too simple, can appear skidding after the belt operation a period, walk inclined to one side phenomenon, or the design is too complicated, and it is very inconvenient during the debugging operation, in addition, because debugging personnel's not professional, the tensioning force is probably too big after the debugging, leads to the belt to be tired for a long time and influences the life-span easily, leads to the fracture of belt, causes unexpected shut down, for this reason we provide a novel belt tightener.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a novel belt tensioning device, which solves the technical problems that the current belt tensioning design is unreasonable, the belt is maintained in a relatively reasonable tensioning force range, the service life of the belt is ensured, and the accidental shutdown caused by the shortened service life of the belt and the broken belt is avoided.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a novel belt tensioning device, includes platform frame and belt, the platform frame downside is equipped with first pillar and second pillar, the upper end symmetry is equipped with drive roller and first driving roller in the platform frame, and its symmetry is equipped with the second driving roller between the two, be equipped with the tensioning roller between second driving roller and the first driving roller, be equipped with the cavity in the second pillar, be equipped with the cylinder in the cavity, cylinder drive axle upper end is fixed with backup pad and tensioning spring in proper order, tensioning spring upper end and tensioning roller fixed connection, the lower extreme is equipped with respectively in the backup pad spacing and is down spacing.

As a preferred technical scheme, sliding grooves are formed in two sides of the cavity, two ends of the supporting plate extend into the sliding grooves and are fixedly provided with sliding blocks, pulleys are symmetrically connected to the other ends of the sliding blocks, and the pulleys are attached to the side walls of the sliding grooves.

As a preferable technical scheme of the utility model, two groups of tensioning springs are arranged and are respectively fixed at two ends between the supporting plate and the rotating shaft of the tensioning roller.

As a preferred technical scheme of the utility model, supporting rods are fixed on the upper side of the upper limit and the lower side of the lower limit, and the other ends of the supporting rods are fixedly connected with the side wall of the cavity.

As a preferable technical scheme of the utility model, the supporting plate is fixed with a buffer cushion at the upper side close to one end of the upper limit.

As a preferable technical solution of the present invention, an access door is hinged to a surface of the second pillar.

Compared with the prior art, the utility model can achieve the following beneficial effects:

1. the position of the tensioning roller is adjusted through the matching of the air cylinder, the supporting plate, the tensioning spring, the upper limit and the lower limit, and meanwhile, the tensioning force of the belt is adjusted, so that the problems that the current belt tensioning design is unreasonable, the belt is maintained in a relatively reasonable tensioning force range, the service life of the belt is ensured, the service life of the belt is shortened, and the accidental shutdown caused by the fracture of the belt is avoided;

2. through the cooperation of slider and spout, improve the stability of backup pad when removing, and the use of cooperation pulley, reduce the backup pad when removing and the friction of spout lateral wall to reduce the wearing and tearing on slider surface.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a schematic view of the connection structure of the tension roller and the tension spring according to the present invention;

FIG. 4 is an enlarged view of a portion a of FIG. 2;

in the figure: 1. a platform frame; 2. a first support; 3. a second support; 4. a cavity; 5. a cylinder; 6. a support plate; 7. tensioning the spring; 8. upper limiting; 9. lower limiting; 10. a drive roller; 11. a first drive roller; 12. a second driving roller; 13. a belt; 14. a tension roller; 15. a chute; 16. a slider; 17. a pulley; 18. a cushion pad; 19. a support bar; 20. an access door.

Detailed Description

The present invention will be further described with reference to specific embodiments for the purpose of facilitating an understanding of technical means, characteristics of creation, objectives and functions realized by the present invention, but the following embodiments are only preferred embodiments of the present invention, and are not intended to be exhaustive. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents and the like used in the following examples are commercially available unless otherwise specified.

Example (b):

as shown in figures 1 and 2, the utility model provides a novel belt tensioning device, which comprises a platform frame 1 and a belt 13, wherein a first support column 2 and a second support column 3 are symmetrically fixed on the lower side of the platform frame 1, a driving roller 10 and a first driving roller 11 are symmetrically fixed on the upper end inside the platform frame 1, one end of the driving roller 10 is connected with a driver, two groups of second driving rollers 12 fixed with the inner wall of the platform frame 1 are symmetrically arranged on the upper end between the driving roller 10 and the first driving roller 11, a tensioning roller 14 connected with the side wall of the platform frame 1 in a sliding manner is arranged between the second driving rollers 12 and the first driving roller 11, the driving roller 10 and the first driving roller 11 are positioned at two ends of the belt 13 and are attached to the surface thereof, two groups of second driving rollers 12 are positioned at the lower end of the belt 13 and are attached thereto, the outer surface of the lower end of the tensioning roller 14 is attached to the belt 13, a cavity 4 is arranged in the second support column 3, and a cylinder 5 is arranged at the inner lower end of the cavity 4, a support plate 6 and a tension spring 7 are sequentially fixed at the upper end of a driving shaft of the air cylinder 5, the upper end of the tension spring 7 extends into the platform frame 1 in a sliding manner and is fixedly connected with a tension roller 14, and the upper end and the lower end of the support plate 6 are respectively provided with an upper limit 8 and a lower limit 9 which are fixedly connected with the side wall of the cavity 4;

when the belt 13 is tensioned and adjusted, firstly, the air cylinder 5 is controlled to work, the air cylinder 5 drives the driving end to move up and down, the driving shaft drives the supporting plate 6 and the tensioning spring 7 to move, the tensioning roller 14 is driven to move through the change of the tensioning force of the supporting plate 6 and the tensioning spring 7, the tensioning stroke and the tensioning force of the belt 13 can be flexibly adjusted, the air cylinder 5 is matched with the upper limit 8 and the lower limit 9 for use, the moving position of the supporting plate 6 is conveniently limited, and the elastic force of the tensioning spring 7 is arranged in the range of the characteristic tension of the belt 13.

In another embodiment, as shown in fig. 4, this embodiment discloses that sliding grooves 15 are formed in two sides of the cavity 4, two ends of the supporting plate 6 extend into the sliding grooves 15 and are fixed with sliding blocks 16, pulleys 17 are symmetrically connected to the other ends of the sliding blocks 16, and the pulleys 17 are attached to the side walls of the sliding grooves 15;

when the air cylinder 5 drives the supporting plate 6 to move through the driving shaft, the stability of the supporting plate 6 in moving is improved through the matching of the sliding block 16 and the sliding groove 15, and the friction between the supporting plate 6 and the side wall of the sliding groove 15 in moving is reduced through the use of the pulley 17, so that the abrasion of the surface of the sliding block 16 is reduced.

In another embodiment, as shown in fig. 3, this embodiment discloses that two sets of tension springs 7 are provided and fixed to both ends between the rotation shafts of the support plate 6 and the tension roller 14, respectively, to improve the stability of both ends of the tension roller 14 at the time of adjustment.

In another embodiment, as shown in fig. 2, this embodiment discloses that a support rod 19 is fixed on both the upper side of the upper limit 8 and the lower side of the lower limit 9, and the other end of the support rod 19 is fixedly connected with the side wall of the cavity 4, so as to improve the fixing performance of the upper limit 8 and the lower limit 9.

In another embodiment, as shown in fig. 4, the embodiment discloses that a buffer pad 18 is fixed on the upper side of the support plate 6 near the upper limit 8, so as to reduce the surface abrasion of the support plate 6 when contacting the upper limit 8 and the lower limit 9, and improve the stability of the support plate 6.

In another embodiment, as shown in fig. 1, the present embodiment discloses that the second pillar 3 is hinged with an access door 20 on the surface thereof, which facilitates maintenance and dust cleaning inside the cavity 4.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a novel belt tensioning device, includes platform frame (1) and belt (13), platform frame (1) downside is equipped with first pillar (2) and second pillar (3), its characterized in that: the utility model discloses a platform frame, including platform frame (1), upper end symmetry is equipped with drive roller (10) and first drive roller (11), and its symmetry between the two is equipped with second driving roller (12), be equipped with tensioning roller (14) between second driving roller (12) and first drive roller (11), be equipped with cavity (4) in second pillar (3), be equipped with cylinder (5) in cavity (4), cylinder (5) drive shaft upper end is fixed with backup pad (6) and tensioning spring (7) in proper order, tensioning spring (7) upper end and tensioning roller (14) fixed connection, backup pad (6) lower extreme is equipped with respectively and goes up spacing (8) and lower spacing (9).

2. A novel belt tensioner as claimed in claim 1, wherein: cavity (4) both sides are equipped with spout (15), backup pad (6) both ends extend to inside and be fixed with slider (16) of spout (15), slider (16) other end symmetric connection has pulley (17), pulley (17) and spout (15) lateral wall laminating.

3. A novel belt tensioner as claimed in claim 1, wherein: the tensioning springs (7) are provided with two groups and are respectively fixed at two ends between the rotating shafts of the supporting plate (6) and the tensioning roller (14).

4. A novel belt tensioner as claimed in claim 1, wherein: the upper side of the upper limit (8) and the lower side of the lower limit (9) are both fixed with a support rod (19), and the other end of the support rod (19) is fixedly connected with the side wall of the cavity (4).

5. The novel belt tensioner as in claim 4, wherein: and a buffer pad (18) is fixed on the upper side of one end of the support plate (6) close to the upper limit (8).

6. A novel belt tensioner as claimed in claim 1, wherein: the surface of the second support column (3) is hinged with an access door (20).