CN219585132U

CN219585132U - Tensioning device and sorting machine

Info

Publication number: CN219585132U
Application number: CN202321156294.8U
Authority: CN
Inventors: 成旭然
Original assignee: Shenzhen Daochuang Intelligent Innovation Technology Co ltd
Current assignee: Shenzhen Daochuang Intelligent Innovation Technology Co ltd
Priority date: 2023-05-12
Filing date: 2023-05-12
Publication date: 2023-08-25
Anticipated expiration: 2033-05-12

Abstract

The utility model is suitable for the technical field of agricultural and sideline product processing, and provides a tensioning device and a sorting machine, wherein the tensioning device comprises: a bracket; the first front belt pulley is rotationally connected to the bracket; the first rear belt pulley is rotationally connected to the bracket and comprises a first inner end and a first outer end opposite to the first inner end, and the diameter of the first inner end is smaller than that of the first outer end; the first mounting piece is movably arranged on the bracket; the first tensioning wheel is rotatably connected to the first mounting piece and comprises a second inner end and a second outer end opposite to the second inner end, and the diameter of the second inner end is smaller than that of the second outer end; the first front belt pulley, the first tensioning wheel and the first rear belt pulley are used for sequentially winding the conveyor belt; the separator comprises a tensioning device; according to the utility model, the problem of fruit dropping position change caused by taking the driven wheel as the tensioning wheel is avoided by arranging the independent tensioning wheel, so that the stability of the production line is improved, and the convenience of adjusting the tensioning degree of the conveyor belt is also improved.

Description

Tensioning device and sorting machine

Technical Field

The utility model belongs to the technical field of agricultural and sideline product processing, and particularly relates to a tensioning device and a sorting machine.

Background

The fruit and vegetable sorting machine is used for related departments such as fruit and vegetable companies, cooperation and the like to sort fruit agricultural and sideline products such as apples, pears, peaches and the like or vegetable agricultural and sideline products such as tomatoes, potatoes and the like, and a great deal of manpower, financial resources and material resources are saved.

The principle of the existing fruit and vegetable sorting machine is that two flat conveyor belts are arranged in a V shape to form a V-shaped groove, so that the two conveyor belts have different speeds, and fruits and vegetables are driven to be arranged in a single row in the V-shaped groove; the tensioning mode of the prior fruit and vegetable sorting machine to the conveyor belt is realized by adjusting the position of the driven wheel, and the fruit dropping position of the fruit and vegetable sorting machine is correspondingly changed due to the fact that one end of the driven wheel is the fruit dropping end of the driven wheel, so that the equipment is unstable, the overall stability of the production line is affected, and the operation space near the driven wheel is small, so that the adjustment is inconvenient.

Disclosure of Invention

Aiming at the problems, the utility model provides the tensioning device and the sorting machine, which at least solve the problems that the existing fruit and vegetable sorting machine influences the stability of equipment and is not easy to adjust by adjusting the tensioning conveyor belt of the driven wheel.

The present utility model provides a tensioning device for tensioning a conveyor belt, the tensioning device comprising:

a bracket;

the first front belt pulley is rotatably connected to the bracket;

the first rear belt pulley is rotationally connected to the bracket and comprises a first inner end and a first outer end opposite to the first inner end, and the diameter of the first inner end is smaller than that of the first outer end;

the first mounting piece is movably arranged on the bracket;

a first tensioning wheel rotatably connected to the first mounting member, the first tensioning wheel including a second inner end and a second outer end opposite the second inner end, the second inner end having a diameter smaller than the second outer end, and the second inner end being adjacent to the first inner end;

the first front belt pulley, the first tensioning wheel and the first rear belt pulley are used for sequentially winding the conveyor belt.

In an embodiment, the ratio of the difference between the diameters of the first outer end and the first inner end to the distance between the two is a first ratio, the ratio of the difference between the diameters of the second outer end and the second inner end to the distance between the two is a second ratio, and the first ratio is twice the second ratio.

In an embodiment, the tensioning device further comprises a first lifting component arranged on the support, wherein the first lifting component is connected with the first mounting piece and used for driving the first mounting piece to lift so as to drive the first tensioning wheel to lift.

In an embodiment, the first lifting assembly includes a first screw rod rotatably connected to the bracket, and one end of the first screw rod is threaded through the first mounting member, so that the first screw rod can rotate to drive the first mounting member to move along the axial direction of the first screw rod.

In an embodiment, the tensioning device further comprises a second front pulley coaxially arranged with the first front pulley, a second rear pulley coaxially arranged with the first rear pulley, both the second front pulley and the second rear pulley being rotatably connected to the bracket, the second rear pulley comprising a third inner end and a third outer end opposite the third inner end, the third inner end having a diameter smaller than the diameter of the third outer end;

the tensioning device further comprises a second mounting piece and a second tensioning wheel, the second mounting piece is movably arranged on the support, the second tensioning wheel is rotatably connected to the second mounting piece, the second tensioning wheel comprises a fourth inner end and a fourth outer end opposite to the fourth inner end, the fourth inner end is adjacent to the third inner end, and the diameter of the fourth inner end is smaller than that of the fourth outer end.

In an embodiment, the ratio of the difference between the diameters of the third outer end and the third inner end to the distance between the two is a third ratio, the ratio of the difference between the diameters of the fourth outer end and the fourth inner end to the distance between the two is a fourth ratio, and the third ratio is twice the fourth ratio.

In an embodiment, the first ratio is equal to the third ratio and the second ratio is equal to the fourth ratio.

In an embodiment, the tensioning device further comprises a second lifting component arranged on the support, and the second lifting component is connected with the second mounting piece and used for driving the second mounting piece to lift so as to drive the second tensioning wheel to lift.

In an embodiment, the second lifting assembly includes a second screw rod rotatably connected to the bracket, and one end of the second screw rod is threaded through the second mounting member, so that the second screw rod can rotate to drive the second mounting member to move along the axial direction of the second screw rod.

The utility model also provides a sorting machine comprising the tensioning device.

The utility model makes an improved design aiming at the problem that the existing fruit and vegetable sorting machine influences the stability of equipment and is not easy to adjust by adjusting the driven wheel to tension the conveyor belt, a first front belt pulley and a first rear belt pulley are arranged to support the conveyor belt, a movable first mounting piece and a first tensioning wheel arranged on the first mounting piece are arranged at the same time, so that the effect of tensioning the conveyor belt is achieved, the independent tensioning wheel can avoid the problem of changing the fruit dropping position caused by adjusting the driven wheel, thereby better improving the stability of a production line, and the independent tensioning wheel can be arranged at a position with larger space according to the requirement so as to facilitate adjustment;

the utility model has simple structure, avoids the problem of fruit dropping position change caused by taking the driven wheel as the tension wheel by arranging the independent tension wheel, improves the stability of the production line, and also improves the convenience of adjusting the tension degree of the conveyor belt, thereby having strong practicability.

Drawings

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

Fig. 1 is a schematic perspective view of a tensioner according to an embodiment of the present utility model when tensioning a conveyor belt.

Fig. 2 is a perspective view of the tensioning device shown in fig. 1.

Fig. 3 is a schematic perspective view of a separator according to another embodiment of the present utility model.

Fig. 4 is a schematic perspective view of the separator shown in fig. 3 at another angle.

Fig. 5 is a schematic front view of the classifier shown in fig. 3.

Fig. 6 is a schematic side view of the classifier shown in fig. 3.

The meaning of the labels in the figures is:

100. a tensioning device;

10. a bracket;

21. a first front pulley; 22. a second front pulley;

31. a first rear pulley; 311. a first inner end; 312. a first outer end; 32. a second rear pulley; 321. a third inner end; 322. a third outer end;

41. a first mounting member; 42. a second mounting member;

51. a first tensioning wheel; 511. a second inner end; 512. a second outer end; 52. a second tensioning wheel; 521. a fourth inner end; 522. a fourth outer end;

61. a first lifting assembly; 611. a first screw; 62. a second lifting assembly; 621. a second screw;

200. a separator;

70. a driving wheel;

80. driven wheel;

90. a conveyor belt.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail below with reference to the accompanying drawings, i.e., embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

Therefore, the utility model provides the tensioning device, the first front belt pulley and the first rear belt pulley are arranged to support the conveyor belt, the movable first mounting piece and the first tensioning wheel arranged on the first mounting piece are arranged at the same time to achieve the effect of tensioning the conveyor belt, the independent tensioning wheel can avoid the problem of fruit dropping position change caused by adjusting the driven wheel, so that the stability of the production line can be better improved, and the independent tensioning wheel can be arranged at a position with larger space according to the requirement so as to be convenient to adjust.

In order to describe the technical scheme of the utility model, the following description is made with reference to specific drawings and embodiments.

Referring to fig. 1 to 3, an embodiment of a first aspect of the present utility model provides a tensioning device 100 for tensioning a conveyor belt 90 of a corresponding apparatus, which may be applied to a sorter 200, or may be applied to other apparatuses having a conveyor belt 90, and this embodiment is illustrated by way of example as a sorter 200.

The tensioning device 100 comprises a bracket 10, a first front pulley 21, a first rear pulley 31, a first mounting 41 and a first tensioning pulley 51.

The bracket 10 is used to provide a fixed basis for the first front pulley 21, the first rear pulley 31, the first mount 41 and the first tensioning pulley 51; the bracket 10 can be connected to the corresponding sorting machine 200, or can be arranged on the ground or a workbench; the support 10 may be part of the housing of the classifier 200 or may be a separate component; the support 10 may be a frame structure, a box-like member or other shaped member; the material of the bracket 10 may be metal, plastic or other hard material.

The first front pulley 21 is rotatably connected to the support 10, specifically, a rotating shaft may be disposed on the support 10 and the first front pulley 21 is sleeved on the rotating shaft, so as to realize the rotational connection of the first front pulley 21, or a bearing seat may be disposed on the support 10, and the first front pulley 21 is mounted on the bearing seat so as to realize the rotational connection of the first front pulley 21, and the first front pulley 21 may also be rotatably connected to the support 10 by other manners, not only by means of a rotating shaft structure or a bearing seat structure.

The first rear pulley 31 is rotatably connected to the bracket 10, and similarly to the first front pulley 21, the first rear pulley 31 may be rotatably connected to the bracket 10 by a rotation shaft, a bearing housing, or the like.

The first rear pulley 31 includes a first inner end 311 and a first outer end 312 opposite to the first inner end 311, the first inner end 311 and the first outer end 312 are opposite ends of the first rear pulley 31, respectively, the diameter of the first inner end 311 is smaller than that of the first outer end 312, that is, the first rear pulley 31 is a conical pulley, and the conveyor belt 90 will tilt after passing around the first rear pulley 31.

The first front pulley 21, the first tension pulley 51 and the first rear pulley 31 are sequentially provided with a conveyor belt 90 for winding, specifically, referring to fig. 2, the conveyor belt 90 enters the tensioning device 100 from the first front pulley 21 and winds around the first front pulley 21, and the conveyor belt 90 can be connected with a member outside the tensioning device 100 after winding around the first rear pulley 31; it will be appreciated that because the conveyor belt 90 of the sorter 200 is inclined, and for ease of power supply, the sorting wheel drive 70 is a generally cylindrical flat belt wheel with its axle extending in a horizontal direction, the conveyor belt 90 is horizontal when entering the tensioner 100 around the first front pulley 21, and the conveyor belt 90 is inclined when connecting to an external structure around the first rear pulley 31, so that the first rear pulley 31 is provided as a conical pulley.

The first mounting piece 41 is movably arranged on the bracket 10, the first mounting piece 41 is used for providing a fixed foundation for the first tensioning wheel 51, and the first mounting piece 41 can be a rotating shaft, a bearing seat or other components; the first mounting member 41 is movably disposed on the bracket 10, that is, a user can adjust the position of the first tensioning wheel 51 by adjusting the position of the first mounting member 41, so as to adjust the tensioning degree of the conveyor belt 90, specifically, in some embodiments, a sliding rail is disposed on the bracket 10, the first mounting member 41 is slidably disposed in the sliding rail, a fixing structure can be disposed on the first mounting member 41 to fix the position of the first mounting member 41, and the first mounting member 41 can slide along the sliding rail to adjust the tensioning degree of the conveyor belt 90 and is fixed by the fixing structure; in other embodiments, a telescopic cylinder is provided on the stand 10 and is connected to the first mounting member 41 to adjust the position of the first mounting member 41 by the telescopic cylinder.

The first tensioning wheel 51 is rotatably connected to the first mounting member 41, and the conveyor belt 90 passes around the first front pulley 21, passes around the first tensioning wheel 51 after entering the tensioning device 100, and passes around the first rear pulley 31 after that, so that the first tensioning wheel 51 can take effect of tensioning the conveyor belt 90; the first tensioning wheel 51 comprises a second inner end 511 and a second outer end 512 opposite to the second inner end 511, the second inner end 511 and the second outer end 512 are respectively two ends of the first tensioning wheel 51, the diameter of the second inner end 511 is smaller than that of the second outer end 512, namely, the first tensioning wheel 51 is a conical belt wheel, and the conveyor belt 90 can incline after passing through the first tensioning wheel 51; the second inner end 511 is adjacent to the first inner end 311 such that both the first tensioner 51 and the first rear pulley 31 are capable of tilting the conveyor belt 90 in the same direction.

Since the conveyor belt 90 enters the tensioning device 100 in a horizontal state and is output in an inclined state, the first tensioning wheel 51 is also provided in a conical structure, so that the first tensioning wheel 51 is made to transition, so that the conveyor belt 90 can be gradually twisted to a desired inclination angle via the first tensioning wheel 51 and the first rear pulley 31.

In use, the conveyor belt 90 of the sorter 200 passes around the first front pulley 21 in a horizontal state; then, the conveyor belt 90 is inclined to the horizontal plane and has a certain inclination angle after bypassing the first tension pulley 51; the conveyor belt 90 having a certain inclination angle is then passed around the first rear pulley 31 and is output, and the conveyor belt 90 has a larger inclination angle with respect to the horizontal plane after passing around the first rear pulley 31, and reaches the inclination angle required for the V-groove of the classifier 200.

When the operator needs to adjust the tension of the conveyor belt 90, the adjustment of the tension of the conveyor belt 90 can be achieved by adjusting the position of the first mounting member 41.

It will be appreciated that the tensioning device 100 provided in this embodiment is operative to tension the conveyor belt 90, so that the first front pulley 21, the first tensioning pulley 51 and the first rear pulley 31 may each be idler pulleys.

The first front belt pulley 21 and the first rear belt pulley 31 are arranged to support the conveyor belt 90, and the movable first mounting piece 41 and the first tensioning wheel 51 arranged on the first mounting piece 41 are arranged at the same time to achieve the effect of tensioning the conveyor belt 90, and the independently arranged first tensioning wheel 51 can avoid the problem of changing the fruit drop position caused by adjusting the driven wheel 80, so that the stability of the production line can be improved better, and the tensioning degree of the conveyor belt 90 can be adjusted conveniently; the present embodiment provides both the first rear pulley 31 and the first tension pulley 51 in a conical structure so that the conveyor belt 90 output from the tensioning device 100 can be inclined with respect to the horizontal plane to meet the requirements of the classifier 200.

Referring to fig. 1 and 2, in some embodiments, the first mounting member 41 is a rotating shaft, the first tensioning wheel 51 is sleeved on the rotating shaft, and the first tensioning wheel 51 can rotate relative to the rotating shaft; the support 10 is provided with a chute extending along the vertical direction, and one end of the rotating shaft is accommodated in the chute, so that the rotating shaft can move along the chute.

Referring to fig. 1 and 2, in some embodiments, the rotation axes of the first front pulley 21 and the first rear pulley 31 are in the same horizontal plane, and the rotation axis of the first tensioning pulley 51 is lower than the horizontal plane, and the first mounting member 41 is movable to drive the first tensioning pulley 51 to move toward or away from the horizontal plane; the first tensioner 51 is located between the first front pulley 21 and the first rear pulley 31 to facilitate the winding of the conveyor belt 90.

Referring to fig. 2, in an embodiment, the ratio of the difference between the diameters of the first outer end 312 and the first inner end 311 to the distance between the first outer end 312 and the first inner end 311 is a first ratio, wherein the distance between the first outer end 312 and the first inner end 311 is the width of the first rear pulley 31, and the first ratio is the taper of the first rear pulley 31 because the first rear pulley 31 is a conical structure, and the larger the first ratio is, the larger the taper of the first rear pulley 31 is, and the larger the inclination angle of the contact surface between the first rear pulley 31 and the conveyor belt 90 is.

The ratio of the difference between the diameters of the second outer end 512 and the second inner end 511 to the distance between the two is a second ratio, wherein the distance between the two is the distance between the second outer end 512 and the second inner end 511, the distance is the width of the first tensioning wheel 51, and the second ratio is the taper of the first tensioning wheel 51 because the first tensioning wheel 51 is in a conical structure, and the larger the second ratio is, the larger the taper of the first tensioning wheel 51 is, and the larger the inclination angle of the contact surface of the first tensioning wheel 51 and the conveyor belt 90 is.

The first ratio is twice the second ratio, i.e. the second ratio is half the first ratio, so that the taper of the first idler pulley 51 is half the taper of the first rear pulley 31, and the arrangement enables the first idler pulley 51 to not only enable the conveyor belt 90 to have a certain inclination angle, but also not enable the conveyor belt 90 to twist excessively to affect the conveyance.

In some embodiments, the second ratio may be greater than half the first ratio to enable the conveyor belt 90 to have a greater angle of inclination before passing around the first rear pulley 31; in other embodiments, the second ratio may also be less than half the first ratio; in still other embodiments, the first ratio may also be three, four, or other ratios of the second ratio.

Referring to fig. 2, in an embodiment, the tensioning device 100 further includes a first lifting assembly 61 disposed on the support 10, where the first lifting assembly 61 is connected to the first mounting member 41, and the first lifting assembly 61 is used to drive the first mounting member 41 to lift and further drive the first tensioning wheel 51 to lift, so as to achieve the effect of adjusting the tensioning degree of the conveyor belt 90.

In some embodiments, the first lifting assembly 61 includes a first screw rod 611 rotatably connected to the support 10, one end of the first screw rod 611 is threaded through the first mounting member 41, so that the first screw rod 611 rotates to drive the first mounting member 41 to move along the axial direction of the first screw rod 611, in particular, a threaded hole is formed in the first mounting member 41, the first screw rod 611 passes through the threaded hole and is in threaded fit with the threaded hole, and the first screw rod 611 rotates to drive the first mounting member 41 to move along the axial direction of the first screw rod 611, so that the first mounting member 41 can be lifted or fallen to change the position of the first tensioning wheel 51, thereby achieving the effect of adjusting the tensioning degree of the conveyor belt 90; when the worker needs to adjust the position of the first tension pulley 51, only the first screw 611 needs to be rotated.

It can be understood that the first mounting member 41 can only lift along the axial direction of the first screw 611, but cannot rotate around the first screw 611, in order to achieve this effect, a guide rod penetrating through the first mounting member 41 may be provided on the bracket 10, a sliding rail may also be provided on the bracket 10, and one end of the first mounting member 41 is accommodated in the sliding rail, and other structures may be used for limiting the first mounting member 41, not only the guide rod structure and the sliding rail structure.

In other embodiments, the first lifting assembly 61 includes a telescopic cylinder, one end of the telescopic cylinder is connected to the bracket 10, and the other end of the telescopic cylinder is connected to the first mounting member 41, and the telescopic cylinder stretches and contracts to drive the first mounting member 41 to move, so as to achieve the effect of adjusting the position of the first tensioning wheel 51.

Referring to fig. 1 and 2, in one embodiment, the tensioner 100 further includes a second front pulley 22, a second rear pulley 32, a second mount 42, and a second tensioner 52.

The second front pulley 22 is rotatably connected to the bracket 10, and the second front pulley 22 is coaxially disposed with the first front pulley 21, the second rear pulley 32 is rotatably connected to the bracket 10, and the second rear pulley 32 is coaxially disposed with the first rear pulley 31.

Similar to the first rear pulley 31, the second rear pulley 32 includes a third inner end 321 and a third outer end 322 opposite the third inner end 321, the third inner end 321 and the third outer end 322 being opposite ends of the second rear pulley 32, respectively, the third inner end 321 having a smaller diameter than the third outer end 322, i.e., the second rear pulley 32 being a conical pulley, the conveyor belt 90 will tilt after passing through the second rear pulley 32.

Similar to the first mounting member 41, the second mounting member 42 is movably disposed on the bracket 10, and the second mounting member 42 is used to provide a fixed foundation for the second tensioning wheel 52, and the second mounting member 42 may be a rotating shaft, a bearing seat or other components; the second mounting member 42 is movably provided on the bracket 10, i.e., a user can adjust the position of the second tensioning wheel 52 by adjusting the position of the second mounting member 42, thereby adjusting the tensioning degree of the corresponding conveyor belt 90.

Similar to the first tensioning pulley 51, the second tensioning pulley 52 is rotatably connected to the second mounting member 42, and the conveyor belt 90 will first bypass the second tensioning pulley 52 after bypassing the second front pulley 22 into the tensioning device 100 and thereafter bypass the second rear pulley 32, so that the second tensioning pulley 52 can act to tension the conveyor belt 90; the second tensioning wheel 52 includes a fourth inner end 521 and a fourth outer end 522 opposite to the fourth inner end 521, the fourth inner end 521 and the fourth outer end 522 are two ends of the second tensioning wheel 52, respectively, the diameter of the fourth inner end 521 is smaller than the diameter of the fourth outer end 522, that is, the second tensioning wheel 52 is a conical pulley, and the conveyor belt 90 will incline after bypassing the second tensioning wheel 52; the fourth inner end 521 and the third inner end 321 are adjacent to each other so that both the second tensioner 52 and the second rear pulley 32 can tilt the conveyor belt 90 in the same direction.

In this embodiment, the first front pulley 21, the first tensioning pulley 51 and the first rear pulley 31 are used for tensioning one conveyor belt 90, the second front pulley 22, the second tensioning pulley 52 and the second rear pulley 32 are used for tensioning the other conveyor belt 90, so as to achieve the effect of independently adjusting the two conveyor belts 90, and according to the principle of the sorting machine 200, the speeds of the two conveyor belts 90 are different, and the arrangement can effectively and independently adjust the two conveyor belts 90, so that the two conveyor belts 90 are prevented from being affected by each other.

In some embodiments, the second front pulley 22, the second idler pulley 52, and the second rear pulley 32 are all idler pulleys.

In some embodiments, the ratio of the difference between the diameters of the third outer end 322 and the third inner end 321 to the distance between the third outer end 322 and the third inner end 321 is a third ratio, where the distance between the two is the distance between the third outer end 322 and the third inner end 321, and the distance is the width of the second rear pulley 32, and because the second rear pulley 32 is in a conical structure, the third ratio is the taper of the second rear pulley 32, and the larger the third ratio is, the larger the taper of the second rear pulley 32 is, and the larger the inclination angle of the contact surface between the second rear pulley 32 and the conveyor belt 90 is.

The ratio of the difference between the diameters of the fourth outer end 522 and the fourth inner end 521 to the distance between the two is a fourth ratio, wherein the distance between the two is the distance between the fourth outer end 522 and the fourth inner end 521, the distance is the width of the second tensioning wheel 52, and the fourth ratio is the taper of the second tensioning wheel 52 because the second tensioning wheel 52 is in a conical structure, the larger the fourth ratio is, the larger the taper of the second tensioning wheel 52 is, and the larger the inclination angle of the contact surface between the second tensioning wheel 52 and the conveyor belt 90 is.

The fourth ratio is twice the third ratio, i.e., the third ratio is one half of the fourth ratio, and the taper of the second idler pulley 52 is one half of the taper of the second rear pulley 32, which allows the second idler pulley 52 to both provide the conveyor belt 90 with a certain angle of inclination and not to twist the conveyor belt 90 too much to affect the conveyance.

In some embodiments, the third inner end 321 is adjacent to the first inner end 311 such that the two conveyor belts 90 are able to form a V-shaped structure under the influence of the first rear pulley 31 and the second rear pulley 32 so as to correspond to the shape of the conveyor belts 90 above the sorter 200.

In some embodiments, the fourth ratio may be greater than half the third ratio to enable the conveyor belt 90 to have a greater angle of inclination before passing around the second rear pulley 32; in other embodiments, the fourth ratio may also be less than half the third ratio; in still other embodiments, the third ratio may also be three, four, or other ratios of the fourth ratio.

In some embodiments, the first ratio is equal to the third ratio and the second ratio is equal to the fourth ratio, the arrangement being such that the conicity of the first rear pulley 31 and the second rear pulley 32 is the same, the conicity of the first idler pulley 51 and the second idler pulley 52 is the same, so that the inclination angle of the two conveyor belts 90 under the action of the first rear pulley 31 and the second rear pulley 32 is the same; the diameter of the first inner end 311 is equal to the diameter of the third inner end 321, the diameter of the second inner end 511 is equal to the diameter of the fourth inner end 521, and the arrangement enables the first rear pulley 31 and the second rear pulley 32 to be replaced with each other, and the first tension pulley 51 and the second tension pulley 52 to be replaced with each other, thereby reducing the manufacturing cost; further, the first front pulley 21 and the second front pulley 22 are also equal in size, so that the first front pulley 21 and the second front pulley 22 can be replaced with each other, and the manufacturing cost, the maintenance cost and the replacement cost are further reduced.

Referring to fig. 1 and 2, in an embodiment, the tensioning device 100 further includes a second lifting assembly 62 disposed on the support 10, where the second lifting assembly 62 is connected to the second mounting member 42, and the second lifting assembly 62 is used to drive the second mounting member 42 to lift and further drive the second tensioning wheel 52 to lift, so as to achieve the effect of adjusting the tensioning degree of the conveyor belt 90.

In some embodiments, the second lifting assembly 62 includes a second screw rod 621 rotatably connected to the bracket 10, one end of the second screw rod 621 is threaded through the second mounting member 42, so that the second screw rod 621 rotates to drive the second mounting member 42 to move along the axial direction of the second screw rod 621, in particular, a threaded hole is formed in the second mounting member 42, the second screw rod 621 passes through the threaded hole and is in threaded fit with the threaded hole, and the second screw rod 621 rotates to drive the second mounting member 42 to move along the axial direction of the second screw rod 621, so that the second mounting member 42 can rise or fall to change the position of the second tensioning wheel 52, thereby achieving the effect of adjusting the tensioning degree of the conveyor belt 90; when the worker needs to adjust the position of the second tensioning wheel 52, the worker only needs to rotate the second screw 621.

It will be appreciated that the second mounting member 42 can only lift along the axial direction of the second screw 621, but cannot rotate around the second screw 621, in order to achieve this effect, a guide rod penetrating through the second mounting member 42 may be provided on the bracket 10, or a sliding rail may be provided on the bracket 10, and one end of the second mounting member 42 is accommodated in the sliding rail, and other structures may be used for limiting the second mounting member 42, not only the guide rod structure and the sliding rail structure.

In other embodiments, the second lifting assembly 62 includes a telescopic cylinder, one end of which is connected to the bracket 10 and the other end of which is connected to the second mounting member 42, and the telescopic cylinder stretches and contracts to move the second mounting member 42, thereby achieving the effect of adjusting the position of the second tensioning wheel 52.

In use, the tensioning device provided by the embodiment of the first aspect of the present utility model, one conveyor belt 90 of the classifier 200 passes around the first front pulley 21 in a horizontal state; then sequentially bypasses the first tension pulley 51 and the first rear pulley 31 and is then outputted in an inclined state to reach the inclination angle of the V-shaped groove of the separator 200; the other conveyor belt 90 of the sorter 200 passes around the second front pulley 22 in a horizontal state; and then sequentially passes around the second tension pulley 52 and the second rear pulley 32 to be output in an inclined state to reach the inclination angle of the V-groove of the classifier 200.

When it is necessary to adjust the tension of the two conveyor belts 90, the worker only needs to rotate the corresponding first screw 611 or second screw 621.

Referring to fig. 3 to 6, a second aspect of the embodiment of the present utility model provides a sorter 200 including the tensioning device 100 provided by the first aspect of the embodiment.

In some embodiments, the sorter 200 further comprises a frame under which the rack 10 is disposed; the separator 200 further comprises a driving wheel 70, a driven wheel 80 and a conveyor belt 90, wherein the driving wheel 70, the driven wheel 80 and the conveyor belt are two, the rotating shafts of the two driving wheels 70 extend along the horizontal direction, the rotating shafts of the two driven wheels 80 incline relative to the horizontal plane and form a V shape, and the driving wheel 70 and the driven wheel 80 are respectively arranged at the opposite ends of the frame; one end of one belt 90 passes around the driving pulley 70, the first front pulley 21, the first tension pulley 51, the first rear pulley 31 and the driven pulley 80 in order and returns to the driving pulley 70, and one end of the other belt 90 passes around the driving pulley 70, the second front pulley 22, the second tension pulley 52, the second rear pulley 32 and the driven pulley 80 in order and returns to the driving pulley 70.

The second embodiment of the present utility model can effectively avoid the change of the fruit drop position caused by adjusting the position of the driven wheel 80 after the tensioning device 100 is provided, and improve the stability of the separator 200.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model.

Claims

1. A tensioner for tensioning a conveyor belt, the tensioner comprising:

a bracket;

the first front belt pulley is rotatably connected to the bracket;

the first mounting piece is movably arranged on the bracket;

2. The tensioner of claim 1 wherein the ratio of the difference in diameter between the first outer end and the first inner end to the distance therebetween is a first ratio and the ratio of the difference in diameter between the second outer end and the second inner end to the distance therebetween is a second ratio, the first ratio being twice the second ratio.

3. The tensioner of claim 1 further comprising a first lifting assembly disposed on the bracket, the first lifting assembly coupled to the first mount and configured to drive the first mount to lift and lower the first tensioner.

4. A tensioning device according to claim 3 wherein the first lifting assembly comprises a first screw rotatably connected to the support, one end of the first screw being threaded through the first mounting member such that rotation of the first screw drives the first mounting member to move axially along the first screw.

5. The tensioner of claim 2 further comprising a second front pulley coaxially disposed with the first front pulley, a second rear pulley coaxially disposed with the first rear pulley, both the second front pulley and the second rear pulley being rotatably connected to the bracket, the second rear pulley including a third inner end and a third outer end opposite the third inner end, the third inner end having a diameter less than the diameter of the third outer end;

6. The tensioner of claim 5 wherein the ratio of the difference in diameter of the third outer end and the third inner end to the distance therebetween is a third ratio, the ratio of the difference in diameter of the fourth outer end and the fourth inner end to the distance therebetween is a fourth ratio, and the third ratio is twice the fourth ratio.

7. The tensioner of claim 6 wherein the first ratio is equal to the third ratio and the second ratio is equal to the fourth ratio.

8. The tensioner of claim 5 further comprising a second lifting assembly disposed on the bracket, the second lifting assembly coupled to the second mount and configured to drive the second mount to lift and lower the second tensioner.

9. The tensioner of claim 8 wherein the second lift assembly comprises a second screw rotatably coupled to the bracket, one end of the second screw threaded through the second mount such that rotation of the second screw drives the second mount to move axially along the second screw.

10. A separator comprising a tensioning device as claimed in any one of claims 1 to 9.