CN215325103U - Belt tensioning device and belt transmission system - Google Patents

Abstract

The utility model provides a belt tensioning device and a belt transmission system; the belt tensioning device comprises a fixed bracket, a connecting rod, a roller and a driving device; one end of the connecting rod is connected with the roller, the middle part of the connecting rod is rotatably connected with the fixed support, and the fixed support, the connecting rod, the roller and the driving device form a lever structure; the roller is in contact fit with the belt all the time; the drive means is arranged to apply a force to the free end of the connecting rod; the belt transmission system comprises a driving wheel, a driven wheel, a belt and the belt tensioning device, and the belt is wound on the driving wheel and the driven wheel; the roller of the belt tensioning device is in contact fit with the belt all the time. When the belt tensioning device is used for tensioning and adjusting the belt, the machine does not need to be stopped, the workload of tensioning operation can be reduced, the adjusting operation force is reduced, and the belt tensioning device has high consistency.

Description

Belt tensioning device and belt transmission system

Technical Field

The utility model relates to the technical field of production equipment, in particular to a belt tensioning device and a belt conveying system.

Background

The transmission of the existing plate forming belt is completed by synchronously rotating a plurality of rollers arranged on two sides of the plate transmission direction. After the belt is used for a certain time, the belt can be pulled and loosened under the influence of the characteristics of the belt material. When the belt is loosened, the belt needs to be tensioned in time, otherwise the belt slips and other faults are caused.

The above description is included in the technical recognition scope of the inventors, and does not necessarily constitute the prior art.

SUMMERY OF THE UTILITY MODEL

Because the transmission of current panel forming belt relies on the synchronous rotation of a plurality of running rollers of both sides to realize, consequently when carrying out the tight operation that rises to the belt, need all adjust the running roller of the relevant position of both sides, adjust the position of running roller usually, through the distance that increases between two adjacent running rollers that lie in the homonymy to the slack of compensation belt. The belt tensioning operation needs to be stopped, the adjusting workload is large, the adjusting efficiency is low, and the consistency of the two-side adjustment is not easy to control.

The utility model provides a belt tensioning device and a belt transmission system; the belt tensioning device comprises a fixed bracket, a connecting rod, a roller and a driving device; one end of the connecting rod is connected with the roller, the middle part of the connecting rod is rotatably connected with the fixed support, and the fixed support, the connecting rod, the roller and the driving device form a lever structure; the roller is in contact fit with the belt all the time; the drive means is arranged to apply a force to the free end of the connecting rod; the belt transmission system comprises a driving wheel, a driven wheel, a belt and the belt tensioning device; the belt is wound on the driving wheel and the driven wheel; the roller of the belt tensioning device is in contact fit with the belt all the time.

After the technical scheme is adopted, the utility model has the following beneficial effects:

a belt tensioning device is arranged, so that the connecting rod is in rotating fit with the fixed support, one end of the connecting rod is connected with the roller, the other end of the connecting rod is arranged as a free end, and the connecting rod can swing up and down around a fulcrum matched with the fixed support to form a lever structure; when the belt tensioning device is used for tensioning and adjusting the belt, the machine does not need to be stopped, the workload of tensioning operation can be reduced, the adjusting operation force is reduced, and the belt tensioning device has high consistency.

Other aspects will be apparent upon reading and understanding the attached drawings and detailed description.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the example serve to explain the principles of the utility model and not to limit the utility model.

FIG. 1 is a cross-sectional view of a belt conveyor system arrangement in an embodiment of the present invention;

fig. 2 is an enlarged view of a partial section of fig. 1 indicated by a symbol a.

Reference numerals:

1-a driving wheel;

2-driven wheel;

3, a belt;

4-a belt tensioning device;

41-a fixed bracket, 42-a connecting rod, 43-a roller, 44-a driving device, 441-an adjusting rod, 442-a transmission wheel, 443-an adjusting handle, 444-a supporting rod, 4421-a transmission groove, 4422-a first limiting surface and 4423-a second limiting surface.

Detailed Description

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model.

In an embodiment of the present invention, as shown in fig. 1, an embodiment of the present invention provides a belt conveying system, including a driving wheel 1, a driven wheel 2, a belt 3, and any one of the following belt tensioning devices 4; the belt 3 is wound on the driving wheel 1 and the driven wheel 2; the roller 43 of the belt tensioning device 4 is always in contact fit with the belt 3. Along with the increase of the service life of the belt 3, because of the influence of the material characteristics of the belt 3, the belt 3 gradually deforms and relaxes, and the relative position relationship between the roller 43 in the belt tensioning device 4 and the belt 3 can be adjusted, namely, the belt 3 is finely adjusted by the movement of the belt tensioning device 4, so that the belt 3 is always in a tensioning state.

In some exemplary embodiments, a pressure detecting device may be provided on the belt tensioner 4 at a position in contact with the belt 3; the pressure value of the tension device 4 is set to be a pressure threshold value when the belt 3 in the initial state is in the designed tension state, when the pressure sensor detects that the pressure threshold value is reduced by a certain value, early warning reminding can be performed, and the early warning reminding can be sound reminding, light reminding or the combination of the two forms.

In some exemplary embodiments, as shown in fig. 1, the belt tensioner 4 includes a fixing bracket 41, a connecting rod 42, a roller 43, and a driving device 44; one end of the connecting rod 42 is connected with the roller 43, the middle part of the connecting rod 42 is rotatably connected with the fixed bracket 41, and the fixed bracket 41, the connecting rod 42, the roller 43 and the driving device 44 form a lever structure; the roller 43 is contacted and matched with the belt 3 all the time; the drive means 44 is arranged to apply a force to the free end of the connecting rod 42. The connection between the connecting rod 42 and the roller 43 may be a fixed connection or a rotatable connection. The number of the rollers 43 may be one, or two or more, a plurality of rollers 43 are connected and combined to form a roller set, and the rollers 43 may also be a cylinder.

Wherein, the connecting rod 42 is matched with the fixed bracket 41 in a rotating way, one end of the connecting rod 42 is connected with the roller 43, the other end of the connecting rod 42 is set as a free end, and the connecting rod 42 can swing up and down around a fulcrum matched with the fixed bracket 41 to form a lever-like structure; when the belt tensioning device 4 is used for tensioning and adjusting the belt 3, the stopping operation is not needed, the workload of the tensioning operation can be reduced, and the adjusting operation force is reduced; also can be through the setting of running roller 43 for once adjust can be to the full width region of belt 3 the operation that rises, need not part or substep multiple regulation, make the regulation have higher uniformity.

In some exemplary embodiments, the fixed bracket 41 is provided with a rotating assembly (not shown), and the rotating assembly includes a pin and a rotating bearing. The connecting rod 42 is connected to the fixing support 41 through a pin shaft, the connecting rod 42 and the pin shaft are connected through a rotating bearing, and the use reliability of the belt tensioning device 4 can be effectively improved by adopting a rotating connection mode. According to actual needs, the rotating assembly can be arranged at the connecting end of the roller 43 and the connecting rod 42, so that the overall operation precision and the service life of the device are improved.

In some exemplary embodiments, by providing a plurality of rollers 43 in a certain relative arrangement relationship in the belt tensioning device 4, a "one-belt-many" adjustment operation mode can be realized, that is, a plurality of belts 3 can be tensioned through one operation of one belt tensioning device 4, so that the efficiency of the tensioning adjustment operation is greatly improved.

In some exemplary embodiments, as shown in fig. 1-2, the driving device 44 further comprises a transmission mechanism, the transmission mechanism is provided with a transmission groove 4421, and the other end of the connecting rod 42 is in contact fit with the transmission groove 4421. The transmission groove 4421 includes a first restriction surface 4422 and a second restriction surface 4423; the first restricting surface 4422 is in contact fit with the other end of the connecting rod 42, and the second restricting surface 4423 is in clearance fit with the other end of the connecting rod 42. The transmission mechanism is provided with a transmission groove 4421 for accommodating the connecting rod 42, the first limiting surface 4422 is arranged to be in contact fit with the connecting rod 42, the second limiting surface 4423 is arranged to be in clearance fit with the connecting rod 42, and after the driving device 44 is started, acting force can be transmitted to the connecting rod 42 through the contact fit part, and then the force is transmitted to the roller 43 through the fixing support 41, so that tensioning adjustment of the belt 3 is realized. The first and second limiting surfaces 4422 and 4423 may be provided in a specific shape according to actual needs, which may be configured to match the cross-sectional shape of the mating end of the connecting rod 42, and the second limiting surfaces 4423 may be provided on both sides of the first limiting surface 4422 to limit the connecting rod 42 in motion. According to actual needs, a noise reduction layer can be arranged on the surface of the first limiting surface 4422, the surface of the second limiting surface 4423 or both, and the noise reduction layer can be formed by coating grease on the surface, or can be formed and assembled by a rubber material alone or formed and assembled by a plastic material with certain self-lubricating property; the same noise reduction layer can be arranged in the corresponding area on the connecting rod 42 matched with the noise reduction layer, so that the energy loss is reduced, the transmission efficiency is improved, and the contact abnormal sound caused by the direct contact of two hard substances is reduced.

In some exemplary embodiments, as shown in fig. 1, the transmission mechanism includes an adjustment lever 441 and a transmission wheel 442; the transmission groove 4421 is provided on the transmission wheel 442; one end of the adjusting rod 441 is fixedly connected with a driving wheel 442. The driving device 44 further comprises an adjusting mechanism, which comprises an adjusting handle 443 and a rotating rod (not shown in the figure), wherein one end of the rotating rod is fixedly connected with the adjusting handle 443, and the other end of the rotating rod is fixedly connected with the other end of the adjusting rod 441. The driving wheel 442 is designed according to a certain shape to form a cam-like shape, the adjusting handle 443 is rotated, force is transmitted to the driving wheel 442 through the rotating rod and the adjusting rod 441, and due to the fact that the driving wheel 442 is designed according to a certain shape, stepless adjustment, namely continuous adjustment, of the matching end of the connecting rod 42 can be achieved, and the use flexibility of the belt tensioning device 4 is improved. An independent driving device can be arranged at the end of the adjusting handle 443 to realize electric control adjustment, and the driving device can also be arranged to work in coordination with a pressure sensor arranged at the roller 43 to form a set of automatic tensioning mechanism, so that full automation of belt tensioning adjustment is realized, and the adjusting efficiency is greatly improved. According to actual conditions, a belt replacement reminding device can be arranged, when the fact that the adjusting quantity of the end of the adjusting handle 443 reaches the early warning limit value is detected, the early warning reminding device sends out early warning reminding to replace the belt with the service life in time, and the probability of production faults caused by fatigue fracture of the belt is reduced.

In some exemplary embodiments, as shown in fig. 1, a turning rod (not shown in the drawings) may be provided as a lead screw. The drive assembly 44 further includes a support rod 444; the support rod 444 is provided with a threaded hole (not shown); the rotating rod penetrates through the threaded hole and is matched with the threaded hole. The support rod 444 is arranged to support the transmission mechanism 44, and one or more support rods 444 may be arranged according to actual conditions to achieve stable support of the driving device 44. The rotating rod can be set to be a polished rod, a corresponding fixing device needs to be arranged, and after the driving device 44 is adjusted in place, the driving device 44 is limited and fixed through the fixing device.

In the description herein, the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing embodiments of the present invention and simplifying the description, but do not indicate or imply that the structures referred to have particular orientations, are constructed and operated in particular orientations, and thus, are not to be construed as limiting the present disclosure.

In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "directly connected," "indirectly connected," "fixedly connected," "mounted," and "assembled" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening media, or may be connected through two elements. The specific meaning of the above terms herein can be understood in a specific context to one of ordinary skill in the art.

Although the embodiments disclosed herein are described above, the descriptions are only for the convenience of understanding the embodiments and are not intended to limit the disclosure. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure, and that the scope of the disclosure herein is to be limited only by the appended claims.

Claims (9)

1. A belt tensioning device is characterized by comprising a fixed bracket, a connecting rod, a roller and a driving device; one end of the connecting rod is connected with the roller, the middle part of the connecting rod is rotatably connected with the fixed support, and the fixed support, the connecting rod, the roller and the driving device form a lever structure; the roller is in contact fit with the belt all the time; the drive means is arranged to apply a force to the free end of the connecting rod.

2. The belt tensioner as claimed in claim 1, wherein the driving device comprises a transmission mechanism, the transmission mechanism is provided with a transmission groove, and the other end of the connecting rod is in contact fit with the transmission groove.

3. The belt tensioner as claimed in claim 2, wherein the transmission mechanism comprises an adjustment lever and a transmission wheel; the transmission groove is arranged on the transmission wheel; one end of the adjusting rod is fixedly connected with the driving wheel.

4. The belt tensioner as in claim 3, wherein the drive means further comprises an adjustment mechanism comprising an adjustment handle and a rotation lever; one end of the rotating rod is fixedly connected with the adjusting handle, and the rotating rod is fixedly connected with the other end of the adjusting rod.

5. The belt tensioner as in claim 4, wherein the rotating rod is configured as a lead screw.

6. The belt tensioner as in claim 5, wherein the drive means further comprises a support bar; the support rod is provided with a threaded hole; the dwang passes the screw hole, and with the screw hole phase-match.

7. The belt tensioner as in claim 2, wherein the drive groove comprises a first limit surface and a second limit surface; the first limiting surface is in contact fit with the other end of the connecting rod, and the second limiting surface is in clearance fit with the other end of the connecting rod.

8. The belt tensioner as in claim 1, wherein the fixed bracket is provided with a rotating assembly, and the rotating assembly comprises a pin and a rotating bearing.

9. A belt transmission system comprises a driving wheel, a driven wheel, a belt and a belt tensioning device, and is characterized in that the belt tensioning device adopts the belt tensioning device as claimed in any one of claims 1 to 8, and the belt is wound on the driving wheel and the driven wheel; the roller of the belt tensioning device is in contact fit with the belt all the time.

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