Pre-color-sorting conveying device and tomato harvester

Abstract

The utility model discloses a conveying device before color sorting and a tomato harvester, which comprise a frame, riding wheels arranged on the frame, a conveying belt supported by the riding wheels, a driving mechanism used for driving the conveying belt to operate and a cleaning mechanism used for cleaning the conveying belt, and the conveying belt comprises a conveying section and a return section. The cleaning mechanism is arranged on the return stroke section, the conveying section comprises a horizontal section and an inclined section, an angle is formed between the horizontal section and the inclined section, a movable adjusting wheel which is positioned after moving is arranged on the frame, and the adjusting wheel is in rolling connection with the middle of the inclined section so as to adjust the conveying angle and the material throwing angle of the inclined section. The fruit conveying device is simple in structure, capable of improving the fruit conveying efficiency in the environment with large muddy water and improving the sorting precision of the color sorter, high in adaptability and capable of being used for conveying other berries.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery, in particular to a color sorting pre-conveyor device. In addition, the utility model also relates to a tomato harvester comprising the color sorting pre-conveyor device. Background Art

[0002] As the cost of manual harvesting of domestic processed tomatoes becomes increasingly high, mechanized harvesting has become an inevitable trend in tomato harvesting. As the most important equipment in mechanized tomato harvesting, tomato machines are playing an increasingly important role.

[0003] In the mechanized harvesting of tomatoes, the transportation of tomato material flow is particularly important. The working environment of the tomato harvester is complex and harsh. During the harvesting, the juice produced by the broken tomato fruits mixes with the soil, causing the soil to adhere to the conveyor belt, which increases the weight of the conveyor belt and causes the conveyor belt to slip, causing serious impact on the transportation of tomatoes; at the same time, it is difficult to achieve uniform distribution of tomato fruits on the horizontally arranged conveyor belt, and the stacked tomato fruits enter the color sorter at the same time, which will reduce the sorting accuracy of the color sorter. Utility Model Content

[0004] The utility model provides a pre-color sorting conveying device and a tomato harvester to solve the technical problems that the conveyor belt of the existing pre-color sorting conveying device is easy to adhere to soil, which affects the conveying efficiency of tomato fruits, and the tomato fruits are difficult to be evenly distributed on the conveyor belt, resulting in low sorting accuracy of the color sorter.

[0005] According to one aspect of the utility model, a pre-color sorting conveying device is provided, comprising a frame, a supporting wheel arranged on the frame, a conveyor belt supported by the supporting wheel, a driving mechanism for driving the conveyor belt to operate, and a cleaning mechanism for cleaning the conveyor belt, wherein the conveyor belt comprises a conveying section and a return section, the cleaning mechanism is arranged on the return section, the conveying section comprises a horizontal section and an inclined section arranged at an angle to the horizontal section, an adjusting wheel which is movable and positioned after movement is arranged on the frame, and the adjusting wheel is rollingly connected to the middle part of the inclined section to adjust the conveying angle and the throwing angle of the inclined section.

[0006] Furthermore, the conveyor belt includes a belt and a connecting rod arranged perpendicular to the belt, two ends of the connecting rod are respectively installed on two belts arranged at intervals, and a plurality of connecting rods are arranged at equal intervals.

[0007] Furthermore, the driving mechanism includes a driving shaft assembly, a chain transmission assembly and a motor arranged on the frame, the motor drives the driving shaft assembly to rotate through the chain transmission assembly, the driving shaft assembly drives the conveyor belt to operate, and the motor is installed on the inner side of the frame.

[0008] Furthermore, the driving shaft assembly includes a driving shaft rotatably connected to the frame, a clamping sleeve sleeved on the driving shaft, and a conveying sprocket sleeved on the clamping sleeve and meshing with the conveyor belt.

[0009] Furthermore, the expansion sleeve includes a tapered sleeve sleeved on the driving shaft, a tensioning sleeve for connecting the conveying sprocket, and a screw for connecting the tapered sleeve and the tensioning sleeve. The inner hole of the tensioning sleeve is an inner cone adapted to the tapered sleeve, and notches are provided on the tapered sleeve and the tensioning sleeve.

[0010] Furthermore, the chain transmission assembly includes a driving sprocket arranged on the output shaft of the motor, a driving sprocket arranged on the driving shaft, a chain for connecting the driving sprocket and the driving sprocket, and a tensioning mechanism for tensioning the chain.

[0011] Furthermore, the tensioning mechanism includes a tensioning seat arranged on the frame and a tensioning wheel engaged with the chain, and the tensioning seat is provided with a slide groove for arranging the tensioning wheel, and the tensioning wheel can slide along the slide groove and be positioned after sliding.

[0012] Furthermore, the cleaning mechanism includes a mounting frame, a cleaning sprocket, a cleaning rod, a bearing and a spring. The two cleaning sprockets are coaxially arranged and are rotatably connected to the corresponding mounting frames through the bearings respectively. The two ends of the cleaning rod are respectively connected to the corresponding teeth of the two cleaning sprockets. The cleaning sprockets are meshed with the conveyor belt. The middle part of the mounting frame is hinged to the frame. The first end of the spring is connected to an end of the mounting frame away from the bearing, and the second end of the spring is connected to the frame.

[0013] Furthermore, a baffle for preventing fruits from falling is arranged on the frame, and the baffle is arranged above one end of the horizontal section away from the inclined section.

[0014] According to another aspect of the utility model, a tomato harvester is provided, which comprises the above-mentioned pre-color sorting conveying device.

[0015] The utility model has the following beneficial effects:

[0016] The utility model discloses a pre-color sorting conveying device, in which a driving mechanism drives the conveyor belt to operate, and conveys the tomato fruits to the color sorter for throwing. The supporting wheels on the frame divide the conveying section of the conveyor belt into a horizontal section and an inclined section arranged at an angle to the horizontal section, and an adjusting wheel is arranged in the middle of the inclined section, so that the inclined section is divided into two sections, a rolling section and a throwing section, with different inclination angles, with the adjusting wheel as a dividing point. By adjusting the positions of the two adjusting wheels on the frame, the conveying angle of the rolling section and the throwing angle of the throwing section can be changed, so that the tomato fruits can be rolled while being transported. The cleaning mechanism can remove the dirt attached to the conveyor belt, which can avoid the weight increase and slippage of the conveyor belt, thereby improving the conveying efficiency. The cleaning mechanism is arranged on the return section to prevent the dirt from being fed into the subsequent color sorting stations along with the tomatoes. The structure is simple, and it can improve the conveying efficiency of the fruit in an environment with large amounts of mud and water, and improve the sorting accuracy of the color sorter. It has strong adaptability and can be used for the transportation of other berries.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 This is a schematic diagram of the structure of the pre-color sorting conveying device of the preferred embodiment of the utility model;

[0020] Figure 2 This is a front view of the color sorting front conveying device of the preferred embodiment of the utility model;

[0021] Figure 3 It is a structural schematic diagram of a conveyor belt of a preferred embodiment of the utility model;

[0022] Figure 4 It is a structural schematic diagram of a driving shaft assembly of a preferred embodiment of the utility model;

[0023] Figure 5 This is a schematic structural diagram of a expansion sleeve of a preferred embodiment of the utility model;

[0024] Figure 6 It is a cross-sectional view of a expansion sleeve of a preferred embodiment of the utility model;

[0025] Figure 7It is a structural schematic diagram of the cleaning mechanism of the preferred embodiment of the utility model;

[0026] Figure 8 It is a structural schematic diagram of a chain transmission assembly of a preferred embodiment of the utility model.

[0027] Legend:

[0028] 1. Frame; 11. Adjusting wheel; 12. Baffle; 2. Conveyor belt; 21. Belt; 22. Connecting rod; 201. Conveying section; 2011. Horizontal section; 2012. Inclined section; 202. Return section; 3. Driving shaft assembly; 31. Driving shaft; 32. Conveying sprocket; 33. Expansion sleeve; 331. Cone sleeve; 332. Tensioning sleeve; 333. Screw; 4. Driven wheel; 5. Supporting wheel; 6. Cleaning mechanism; 61. Mounting frame; 62. Cleaning sprocket; 63. Spring; 64. Cleaning rod; 65. Bearing; 7. Chain drive assembly; 71. Driving sprocket; 72. Driving sprocket; 73. Tensioning mechanism; 731. Tensioning seat; 732. Tensioning wheel; 733. Slide; 74. Chain; 8. Motor. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. However, the present invention can be implemented in a variety of different ways as defined and covered below.

[0030] Please also read Figures 1 to 8 The pre-color sorting conveying device of this embodiment includes a frame 1, a supporting wheel 5 arranged on the frame 1, a conveyor belt 2 supported by the supporting wheel 5, a driving mechanism for driving the conveyor belt 2 to operate, and a cleaning mechanism 6 for cleaning the conveyor belt 2. The conveyor belt 2 includes a conveying section 201 and a return section 202. The cleaning mechanism 6 is arranged on the return section 202. The conveying section 201 includes a horizontal section 2011 and an inclined section 2012 arranged at an angle to the horizontal section 2011. An adjusting wheel 11 is arranged on the frame 1, which is movable and positioned after movement. The adjusting wheel 11 is rollingly connected to the middle part of the inclined section 2012 to adjust the conveying angle and the throwing angle of the inclined section 2012.

[0031] In the pre-color sorting conveying device of this embodiment, the driving mechanism drives the conveyor belt 2 to operate, and conveys the tomato fruits to the color sorter for throwing. The supporting wheel 5 on the frame 1 divides the conveying section 201 (the part for carrying and transporting the tomato fruits) of the conveyor belt 2 into a horizontal section 2011 and an inclined section 2012 arranged at an angle to the horizontal section 2011, and an adjusting wheel 11 is arranged in the middle of the inclined section 2012, so that the inclined section 2012 is divided into two rolling sections (connected to the horizontal section 2011) and a throwing section with different inclination angles with the adjusting wheel 11 as the dividing point. By adjusting the positions of the two adjusting wheels 11 on the frame 1, the conveying angle and the angle of the rolling section can be changed. The throwing angle of the throwing section allows the tomato fruits to roll during the conveying process and be evenly distributed on the conveying chain, which can prevent the tomato fruits from piling up on one side and entering the color sorter at the same time, and can improve the sorting accuracy of the color sorter; the cleaning mechanism 6 can remove the soil attached to the conveyor belt 2, which can not only prevent the weight of the conveyor belt 2 from increasing, but also prevent the conveyor belt 2 from slipping, thereby improving the conveying efficiency; the cleaning mechanism 6 is arranged on the return section 202 to prevent the soil from being fed into the subsequent color sorting station along with the tomatoes; its structure is simple, and it can improve the conveying efficiency of the fruit in an environment with large mud and water, and improve the sorting accuracy of the color sorter, and it has strong adaptability and can be used for the conveying of other berries. Optionally, the frame 1 is provided with a strip hole, and the adjusting wheel 11 can slide along the strip hole and position after sliding, so as to adjust the conveying angle and throwing angle of the inclined section 2012. Optionally, the frame 1 is provided with a plurality of mounting holes for installing the adjusting wheel 11, and the conveying angle and throwing angle of the inclined section 2012 can be adjusted by selecting different mounting holes to install the adjusting wheel 11.

[0032] In this embodiment, the conveyor belt 2 includes a belt 21 and a connecting rod 22 arranged perpendicular to the belt 21. The two ends of the connecting rod 22 are respectively installed on two belts 21 arranged at intervals. Multiple connecting rods 22 are arranged at equal intervals, which play a preliminary screening function in the tomato conveying process and can screen out smaller tomatoes and small soil blocks in the tomato material.

[0033] In this embodiment, the driving mechanism includes a driving shaft assembly 3, a chain transmission assembly 7 and a motor 8 arranged on the frame 1. The motor 8 drives the driving shaft assembly 3 to rotate through the chain transmission assembly 7, and the driving shaft assembly 3 drives the conveyor belt 2 to operate. The motor 8 is installed on the inner side of the frame 1, which can reduce the overall width of the pre-color sorting conveying device, making the structure more compact and avoiding interference between the motor 8 and other components of the tomato harvester. Optionally, the driving shaft assembly 3 is arranged at one end of the inclined section 2012 away from the horizontal section 2011, and a driven wheel 4 is arranged at one end of the horizontal section 2011 away from the inclined section 2012 to improve the stability of the conveyor belt 2.

[0034] In this embodiment, the driving shaft assembly 3 includes a driving shaft 31 rotatably connected to the frame 1, a clamping sleeve 33 sleeved on the driving shaft 31, and a conveying sprocket 32 ​​sleeved on the clamping sleeve 33 and meshing with the conveyor belt 2. The clamping sleeve 33 can adjust the axial position of the conveying sprocket 32 ​​on the driving shaft 31, so that the conveying sprockets 32 at both ends of the driving shaft 31 can resist the belt 21 on the corresponding side to prevent the conveyor belt 2 from axial movement.

[0035] The cam 332 is a substantially rectangular shape, and the cam 333 is provided with a plurality of cams 334, each of which is provided with a plurality of cams 335. The cam 332 is provided with a plurality of cams 336, each of which is provided with a plurality of cams 337. The cam 332 is provided with a plurality of cams 338, each of which is provided with a plurality of cams 339. The cam 331 is provided with a notch on each of the plurality of tension sleeves 332. The outer diameter of the tension sleeve 332 is increased, so that the outer cylindrical surface of the tension sleeve 332 is tightly connected with the inner hole of the conveying sprocket 32. At the same time, the inner diameter of the tapered sleeve 331 is reduced, so that the inner hole of the tapered sleeve 331 is tightly connected with the outer wall of the driving shaft 31, thereby realizing the axial positioning of the conveying sprocket 32 ​​on the driving shaft 31. When the axial position of the conveying sprocket 32 ​​needs to be adjusted, the screw 333 is loosened, the outer diameter of the tension sleeve 332 is reduced, and the inner diameter of the tapered sleeve 331 is increased, thereby adjusting the axial position of the conveying sprocket 32 ​​on the driving shaft 31. The conveying sprockets 32 on both sides can not only drive the conveyor belt 2 to rotate, but also can axially position the conveyor belt 2 to prevent axial movement. Moreover, the requirements for the straightness, roundness and surface finish of the driving shaft 31 are not high, and the processing is convenient, which can save costs.

[0036] In this embodiment, the chain drive assembly 7 includes a driving sprocket 72 arranged on the output shaft of the motor 8, a driving sprocket 71 arranged on the driving shaft 31, a chain 74 for connecting the driving sprocket 72 and the driving sprocket 71, and a tensioning mechanism 73 for tensioning the chain 74. The tensioning mechanism 73 can prevent the chain 74 from loosening and ensure the normal operation of the conveyor belt 2.

[0037] In this embodiment, the tensioning mechanism 73 includes a tensioning seat 731 arranged on the frame 1 and a tensioning wheel 732 engaged with the chain 74. The tensioning seat 731 is provided with a slide groove 733 for arranging the tensioning wheel 732. The tensioning wheel 732 can slide along the slide groove 733 and be positioned after sliding. The tensioning / relaxing of the chain 74 is achieved by adjusting the position of the tensioning wheel 732 in the slide groove 733. The structure is simple and easy to disassemble and maintain.

[0038] In this embodiment, the cleaning mechanism 6 includes a mounting frame 61, a cleaning sprocket 62, a cleaning rod 64, a bearing 65 and a spring 63. The two cleaning sprockets 62 are coaxially arranged and are rotatably connected to the corresponding mounting frame 61 through the bearings 65. The two ends of the cleaning rod 64 are respectively connected to the corresponding teeth of the two cleaning sprockets 62. The cleaning sprockets 62 are meshed with the conveyor belt 2. The middle part of the mounting frame 61 is hinged to the frame 1. The first end of the spring 63 is connected to the end of the mounting frame 61 away from the bearing 65, and the second end of the spring 63 is connected to the frame 1; the spring 63 can offset the pressure of the conveyor belt 2 on the cleaning sprocket 62. On the one hand, it can play a role in tensioning the conveyor belt 2. On the other hand, it can prevent the cleaning sprocket 62 from jumping teeth, thereby ensuring the cleaning effect; the cleaning rod 64 is connected with the teeth corresponding to the cleaning sprocket 62. On the one hand, such a spacing arrangement can prevent the small intervals between the cleaning rods 64 from being blocked by mud, ensuring that the cleaning rods 64 can extend into the intervals between the connecting rods 22, thereby ensuring the effect of cleaning the conveyor belt 2; on the other hand, the number of teeth of the cleaning sprocket 62 matches the total number of intervals between the connecting rods 22, ensuring that during the conveying process, each interval between the connecting rods 22 can be cleaned by the cleaning rod 64, and the mud and debris between the connecting rods 22 can be pushed out, which can avoid the increase in weight of the conveyor belt 2 and avoid tooth jumping, thereby ensuring the conveying efficiency; the cleaning mechanism 6 is passive cleaning, and its power comes from the rotation of the conveyor belt 2. As the conveyor belt 2 rotates, no additional power is required, and the structure is ingenious.

[0039] like Figure 1 and Figure 2 As shown, in this embodiment, a baffle 12 for preventing fruits from falling is arranged on the frame 1. The baffle 12 is arranged above the end of the horizontal section 2011 away from the inclined section 2012 to prevent tomato fruits from falling from the horizontal section 2011 and avoid waste.

[0040] A tomato harvester comprises the above-mentioned pre-color sorting conveying device.

[0041] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A pre-color sorting conveying device, characterized in that: The invention comprises a frame (1), a supporting wheel (5) arranged on the frame (1), a conveyor belt (2) supported by the supporting wheel (5), a driving mechanism for driving the conveyor belt (2) to operate, and a cleaning mechanism (6) for cleaning the conveyor belt (2). The conveyor belt (2) comprises a conveying section (201) and a return section (202); the cleaning mechanism (6) is arranged on the return section (202); the conveying section (201) comprises a horizontal section (2011) and an inclined section (2012) arranged at an angle to the horizontal section (2011); an adjusting wheel (11) is arranged on the frame (1) and is movable and positioned after movement; the adjusting wheel (11) is rollingly connected to the middle part of the inclined section (2012) so as to adjust the conveying angle and the throwing angle of the inclined section (2012).

2. The pre-color sorting conveying device according to claim 1, characterized in that: The conveyor belt (2) comprises a belt (21) and a connecting rod (22) arranged perpendicular to the belt (21), the two ends of the connecting rod (22) are respectively mounted on two belts (21) arranged at intervals, and a plurality of connecting rods (22) are arranged at equal intervals.

3. The pre-color sorting conveying device according to claim 2, characterized in that: The driving mechanism comprises a driving shaft assembly (3), a chain transmission assembly (7) and a motor (8) arranged on the frame (1); the motor (8) drives the driving shaft assembly (3) to rotate through the chain transmission assembly (7); the driving shaft assembly (3) drives the conveyor belt (2) to operate; and the motor (8) is installed on the inner side of the frame (1).

4. The pre-color sorting conveying device according to claim 3 is characterized in that: The driving shaft assembly (3) comprises a driving shaft (31) rotatably connected to the frame (1), a tightening sleeve (33) sleeved on the driving shaft (31), and a conveying sprocket (32) sleeved on the tightening sleeve (33) and meshed with the conveyor belt (2).

5. The pre-color sorting conveying device according to claim 4, characterized in that: The expansion sleeve (33) comprises a tapered sleeve (331) sleeved on the driving shaft (31), a tensioning sleeve (332) for connecting the conveying sprocket (32), and a screw (333) for connecting the tapered sleeve (331) and the tensioning sleeve (332); the inner hole of the tensioning sleeve (332) is an inner cone adapted to the tapered sleeve (331); and notches are provided on the tapered sleeve (331) and the tensioning sleeve (332).

6. The pre-color sorting conveying device according to claim 5, characterized in that: The chain drive assembly (7) comprises a driving sprocket (72) arranged on the output shaft of the motor (8), a driving sprocket (71) arranged on the driving shaft (31), a chain (74) for connecting the driving sprocket (72) and the driving sprocket (71), and a tensioning mechanism (73) for tensioning the chain (74).

7. The pre-color sorting conveying device according to claim 6, characterized in that: The tensioning mechanism (73) comprises a tensioning seat (731) arranged on the frame (1) and a tensioning wheel (732) meshed with the chain (74); a slide groove (733) for arranging the tensioning wheel (732) is provided on the tensioning seat (731); the tensioning wheel (732) can slide along the slide groove (733) and be positioned after sliding.

8. The pre-color sorting conveying device according to claim 2, characterized in that: The cleaning mechanism (6) comprises a mounting frame (61), a cleaning sprocket (62), a cleaning rod (64), a bearing (65) and a spring (63); the two cleaning sprockets (62) are coaxially arranged and are rotatably connected to the corresponding mounting frame (61) through the bearings (65), respectively; the two ends of the cleaning rod (64) are respectively connected to the corresponding teeth of the two cleaning sprockets (62); the cleaning sprockets (62) are meshed with the conveyor belt (2); the middle part of the mounting frame (61) is hinged to the frame (1); the first end of the spring (63) is connected to one end of the mounting frame (61) away from the bearing (65), and the second end of the spring (63) is connected to the frame (1).

9. The pre-color sorting conveying device according to claim 1, characterized in that: The frame (1) is provided with a baffle (12) for preventing fruits from falling, and the baffle (12) is arranged above an end of the horizontal section (2011) away from the inclined section (2012).

10. A tomato harvester, characterized in that: The invention comprises the pre-color sorting conveying device according to any one of claims 1 to 9.

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