A chain tensioning assembly, fruit and vegetable conveying mechanism and fruit and vegetable sorting device

Abstract

The utility model relates to fruit and vegetable sorting technical field discloses a chain tensioning assembly, fruit and vegetable conveying mechanism and fruit and vegetable sorting device, chain tensioning assembly fixed bolster, rotating support, tensioning part and elastic abutment part, rotating support rotation is connected in fixed bolster, tensioning part is connected in rotating support, and tensioning part includes abutment cambered surface, one end of elastic abutment part is connected in rotating support, elastic abutment part can take place elastic deformation, and fixed bolster is provided with elastic force, makes abutment cambered surface and tightens chain. The end of elastic abutment part is connected to the rack away from the rotating support. To solve the technical problem that the chain may be slackened in the working process in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of fruit and vegetable sorting technology, and in particular to a chain tensioning component, a fruit and vegetable conveying mechanism, and a fruit and vegetable sorting device. Background Technology

[0002] Currently, fruits and vegetables are a type of food that people often consume. Fruits and vegetables include citrus fruits, cherries, apples, pears, tomatoes, and pineapples. After ripening, fruits and vegetables need to be harvested and then transported to factories for sorting and processing to facilitate subsequent packaging and sales.

[0003] In related technologies, fruit and vegetable sorting devices may include fruit and vegetable conveying mechanisms, which may include conveying chains. The conveying chains are used to drive the fruits and vegetables to move in the fruit and vegetable sorting devices. Generally, both ends of the chain are fitted with a corresponding sprocket, and the two sprockets tension the chain.

[0004] However, the chain may loosen during operation, and the chain may stretch, which may result in a larger gap between the chain and the sprocket, producing more noise during operation; or the chain may fall off the sprocket. Utility Model Content

[0005] The present invention aims to provide a chain tensioning component, a fruit and vegetable conveying mechanism, and a fruit and vegetable sorting device to solve the technical problem in the prior art that the chain may loosen during operation, the chain length may extend, and the gap between the chain and the sprocket may be large.

[0006] The technical problem solved by this utility model embodiment is addressed by the following technical solution:

[0007] A chain tensioning assembly is provided, comprising:

[0008] Fixed bracket;

[0009] A rotating bracket, which is rotatably connected to the fixed bracket;

[0010] Tensioning component, the tensioning component being connected to the rotating bracket, the tensioning component including an abutting arc surface;

[0011] An elastic abutment component is provided, one end of which is connected to the rotating bracket. The elastic abutment component is capable of elastic deformation, providing elastic force to the rotating bracket, so that the abutment arc surface presses against the chain.

[0012] With the above structure, one end of the elastic abutment component is connected to the rotating bracket, and the other opposite end can be connected to the frame. The elastic abutment component undergoes elastic deformation so that it can provide elastic force to the rotating bracket. The abutment arc surface faces the rotating bracket, and the elastic abutment component is located on the opposite side of the rotating bracket. The abutment arc surface can abut against the conveyor chain. Thus, the elastic abutment component can support the rotating bracket, allowing the rotating bracket to provide tension to the conveyor chain through the abutment arc surface of the tensioning component, thereby reducing the possibility of the conveyor chain becoming loose during operation.

[0013] In some embodiments, the upper end of the rotating bracket is rotatably connected to the fixed bracket, the lower end of the rotating bracket extends out of the fixed bracket, and the tensioning member is installed at the lower end of the rotating bracket;

[0014] The fixed bracket includes a clamping sidewall, which clamps the rotating bracket with the elastic abutment member; the abutment arc surface faces the rotating bracket on one side, and the elastic abutment member is located on the opposite side of the rotating bracket.

[0015] With the above structure, the lower end of the rotating bracket extends out of the fixed bracket, and the tensioning component is installed at the lower end of the rotating bracket. The tensioning component can be installed at the lower end of the rotating bracket first, and then the upper end of the rotating bracket can be rotatably connected to the fixed bracket; so that the assembly between the fixed bracket, the rotating bracket and the tensioning component is more convenient.

[0016] Furthermore, when the tension provided by the contact arc to the conveyor chain is large, the elastic contact component needs to provide greater elastic force to the rotating bracket. The elastic deformation of the elastic contact component is large, and the rotating bracket rotates relative to the fixed bracket in the direction of increasing elastic deformation of the elastic contact component. The tensioning component can contract into the space enclosed by the conveyor chain to reduce the tension required by the conveyor chain. Similarly, when the tension provided by the contact arc to the conveyor chain is small, the tensioning component can expand outward from the space enclosed by the conveyor chain to increase the tension required by the conveyor chain. Thus, the chain tensioning component can adapt to the tension of the chain to reduce the possibility of the conveyor chain loosening.

[0017] In some embodiments, the elastic abutment component includes a guide, a fixing member, an adjusting member, and a spring. One end of the guide passes through the rotating bracket and the clamping sidewall in sequence. The fixing member and the adjusting member are respectively connected to the two ends of the guide. The fixing member and the rotating bracket are respectively located on opposite sides of the clamping sidewall. The spring is sleeved on the guide and is located between the rotating bracket and the adjusting member.

[0018] The fixing member is fixed to the clamping sidewall, and the adjusting member can move or be fixed relative to the guide member.

[0019] With the above structure, the chain tensioning assembly is continuously subjected to pressure from the conveyor chain during operation, which may cause the chain tensioning assembly to shift relative to the frame. The adjusting member can move or be fixed relative to the guide member. When the chain tensioning assembly shifts relative to the frame, the adjusting member can be moved a certain distance relative to the guide member to reset the chain tensioning assembly relative to the frame, and then the adjusting member can be fixed to the guide member.

[0020] In some embodiments, the spring extends parallel to a horizontal plane, and the abutting arc surface is oriented obliquely downward.

[0021] With the above structure, the extension direction of the spring is parallel to the horizontal plane, so that the elastic force of the elastic contact component on the rotating bracket is parallel to the horizontal plane; the contact arc surface is tilted downward so that the contact arc surface can be tilted, and the part of the conveyor chain that abuts the contact arc surface is also tilted. The tilt direction of the contact arc surface is adapted to the tilt direction of the part of the conveyor chain that abuts the contact arc surface, so that the conveyor chain can fit more tightly against the contact arc surface.

[0022] In some embodiments, the guide includes a bolt, and the fixing member includes a positioning nut, a body, a first limiting protrusion, and a second limiting protrusion. The body is sleeved on the guide, the positioning nut is threadedly connected to the guide, and the first limiting protrusion and the second limiting protrusion are located on opposite sides of the body.

[0023] The fixing bracket further includes a first limiting sidewall and a second limiting sidewall, the first limiting sidewall and the second limiting sidewall are respectively connected to the opposite sides of the clamping sidewall, the first limiting protrusion is fixed to the first limiting sidewall, the second limiting protrusion is fixed to the second limiting sidewall, and the positioning nut is clamped by the nut of the body and the guide member.

[0024] With the above structure, the main body is sleeved on the guide member, and the first limiting protrusion and the second limiting protrusion are located on opposite sides of the main body. The main body is fixed to the clamping side wall, the first limiting protrusion is fixed to the first limiting side wall, and the second limiting protrusion is fixed to the second limiting side wall, so that the fixing member can be stably fixed to the fixing bracket. In addition, the nut of the main body and the guide member clamps the positioning nut, so that the positioning nut cannot rotate relative to the guide member, and the positioning nut is fixed on the guide member.

[0025] In some embodiments, the first limiting sidewall is perpendicular to the clamping sidewall and parallel to the second limiting sidewall;

[0026] The first limiting sidewall has a first limiting groove, the second limiting sidewall has a second limiting groove, the clamping sidewall has a third limiting groove, the first limiting groove is connected to the second limiting groove through the third limiting groove, the first limiting protrusion is fixed in the first limiting groove, the second limiting protrusion is fixed in the second limiting groove, and the body is fixed in the third limiting groove.

[0027] With the above structure, the first limiting protrusion is fixed in the first limiting groove, the second limiting protrusion is fixed in the second limiting groove, and the body is fixed in the third limiting groove. By simply embedding the fastener into the fixing bracket, the first limiting protrusion and the first limiting sidewall, the second limiting protrusion and the second limiting sidewall, and the body and the clamping sidewall can be fixed to each other, simplifying the assembly process between the fastener and the fixing bracket.

[0028] In some embodiments, the elastic abutment component further includes a nut limiting member, the nut limiting member is fixed to the fixed bracket, the nut limiting member has a fourth limiting groove, the guide member passes through the fourth limiting groove, and the groove wall of the fourth limiting groove is connected to the positioning nut to prevent rotation.

[0029] With the above structure, the nut limiting component is fixed to the fixed bracket, and the groove wall of the fourth limiting groove is connected to the positioning nut to prevent rotation, so that the positioning nut cannot rotate axially around the guide rod, which further improves the stability of the fixing component relative to the fixed frame.

[0030] In some embodiments, the chain tensioning assembly further includes at least two locking members, the tensioning component being fixedly connected to the rotating bracket via all of the locking members.

[0031] With the above structure, the tensioning component is fixedly connected to the rotating bracket by all locking parts, so that the tensioning component cannot rotate relative to the rotating bracket, so that the tensioning component and the rotating bracket can be connected more stably.

[0032] Another embodiment of the present invention provides a fruit and vegetable conveying mechanism, including a drive component, a conveying chain, and a tensioning component as described in any of the above embodiments. The drive component is used to drive the conveying chain to move, and the abutting arc surface abuts against the conveying chain.

[0033] Another embodiment of this utility model provides a fruit and vegetable sorting device, including a frame and the fruit and vegetable conveying mechanism in the above embodiment, wherein the end of the elastic abutment member facing away from the rotating bracket is connected to the frame.

[0034] Compared with the prior art, one end of the elastic abutment component is connected to the rotating bracket, and the other opposite end can be connected to the frame. The elastic abutment component undergoes elastic deformation so that it can provide elastic force to the rotating bracket. The abutment arc surface faces the rotating bracket, and the elastic abutment component is located on the opposite side of the rotating bracket. The abutment arc surface can abut against the conveyor chain. Thus, the elastic abutment component can support the rotating bracket, so that the rotating bracket can provide tension to the conveyor chain through the abutment arc surface of the tensioning component, thereby reducing the possibility of the conveyor chain becoming loose during operation. Attached Figure Description

[0035] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings do not constitute a limitation on scale.

[0036] Figure 1 This is a side view of a fruit and vegetable sorting device in one embodiment of this utility model;

[0037] Figure 2 yes Figure 1 A three-dimensional view of the chain tensioning component of the fruit and vegetable sorting device;

[0038] Figure 3 yes Figure 1 Exploded view of the chain tensioning component of the fruit and vegetable sorting device;

[0039] Figure 4 yes Figure 1 A structural diagram of the fixed bracket, fixing parts, and nut limiting parts of the fruit and vegetable sorting device;

[0040] Figure 5 yes Figure 1 A partial view of the tensioning component of the fruit and vegetable sorting device.

[0041] Figure label:

[0042] 1000 Fruit and vegetable conveying mechanism; 100 Chain tensioning assembly; 10 Fixed bracket; 12 Clamping sidewall; 1202 Third limiting groove; 14 First limiting sidewall; 1402 First limiting groove; 16 Second limiting sidewall; 1602 Second limiting groove; 18 Rotating shaft assembly; 20 Rotating bracket; 22 Clearance groove; 30 Tensioning component; 32 Abutting arc surface; 40 Elastic abutting component; 42 Guide component; 44 Fixing component; 442 Positioning nut; 444 Body; 446 First limiting protrusion; 448 Second limiting protrusion; 46 Adjusting component; 48 Spring component; 49 Nut limiting component; 4902 Fourth limiting groove; 50 Locking component; 200 Drive assembly; 300 Conveyor chain; 2000 Frame. Detailed Implementation

[0043] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connected" to another element, it can be directly on the other element, or one or more intermediate elements can exist between them. The terms "upper," "lower," "left," "right," "upper end," "lower end," "top," and "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0045] The following detailed description, in conjunction with all the accompanying drawings, describes in detail the chain tensioning assembly 100, the fruit and vegetable conveying mechanism 1000, and the fruit and vegetable sorting device provided in this application through specific embodiments.

[0046] Please refer to Figure 1 , Figure 2 and Figure 3One embodiment of this utility model discloses a fruit and vegetable sorting device, including a fruit and vegetable conveying mechanism 1000 and a frame 2000. The fruit and vegetable conveying mechanism 1000 is installed on the frame 2000. The fruit and vegetable sorting device may also include a fruit and vegetable sorting mechanism and an output mechanism. The fruit and vegetable conveying mechanism 1000 is used to convey fruits and vegetables to the fruit and vegetable sorting mechanism. The fruit and vegetable sorting mechanism is used to collect information about the fruits and vegetables, such as weight information or surface image information. The fruit and vegetable sorting mechanism conveys the fruits and vegetables to a corresponding output mechanism according to the information of the fruits and vegetables.

[0047] The fruit and vegetable conveying mechanism 1000 may include a chain tensioning assembly 100, a drive assembly 200, and a conveying chain 300. The drive assembly 200 may include a motor and a sprocket. The sprocket may be mounted on the frame 2000. Both ends of the conveying chain 300 may be respectively fitted onto a corresponding sprocket. The motor of the drive assembly 200 is used to drive the sprocket to rotate, thereby driving the conveying chain 300 to move. The chain tensioning assembly 100 may be located on the underside of the conveying chain 300. The chain tensioning assembly 100 may include an abutting arc surface 32, which may abut against the conveying chain 300.

[0048] The chain tensioning assembly 100 includes a fixed bracket 10, a rotating bracket 20, a tensioning component 30, and an elastic abutment component 40; the rotating bracket 20 is rotatably connected to the fixed bracket 10; the tensioning component 30 is connected to the rotating bracket 20 and includes an abutment arc surface 32; one end of the elastic abutment component 40 is connected to the rotating bracket 20; the elastic abutment component 40 can undergo elastic deformation to provide elastic force to the rotating bracket 20, so that the abutment arc surface 32 abuts the chain.

[0049] With the above structure, one end of the elastic abutment member 40 is connected to the rotating bracket 20, and the other opposite end can be connected to the frame 2000. The elastic abutment member 40 undergoes elastic deformation so that it can provide elastic force to the rotating bracket 20. The abutment arc surface 32 faces the rotating bracket 20 on one side, and the elastic abutment member 40 is located on the other opposite side of the rotating bracket 20. The abutment arc surface 32 can abut against the conveyor chain 300. Thus, the elastic abutment member 40 can support the rotating bracket 20, so that the rotating bracket 20 can provide tension to the conveyor chain 300 through the abutment arc surface 32 of the tensioning member 30, thereby reducing the possibility of the conveyor chain 300 becoming loose during operation.

[0050] Specifically, the elastic abutment member 40 and the fixed bracket 10 clamp the rotating bracket 20; the abutment arc surface 32 faces the rotating bracket 20 on one side, and the elastic abutment member 40 is located on the opposite side of the rotating bracket 20. The end of the elastic abutment member 40 facing away from the rotating bracket 20 is connected to the frame 2000.

[0051] In this embodiment, both the fixed bracket 10 and the rotating bracket 20 may include bent sheet metal structures. The fixed bracket 10 may be fixed to the frame 2000 by screw connection or welding. The upper end of the rotating bracket 20 may be rotatably connected to the fixed bracket 10 by a rotating shaft component, and the lower end of the rotating bracket 20 may protrude relative to the fixed bracket 10. The tensioning component 30 may include a semi-circular plate-like structure. The tensioning component 30 may be fixed to the lower end of the rotating bracket 20 by a threaded connector. The semi-circular arc-shaped side of the tensioning component 30 forms an abutting arc surface 32, and the abutting arc surface 32 may be tilted downward.

[0052] The elastic abutment component 40 may include a bolt and a spring. The two ends of the bolt are respectively connected to the fixed bracket 10 and the frame 2000. The spring is sleeved on the bolt. One end of the spring abuts against the rotating bracket 20, and the other end of the spring can abut against the frame 2000.

[0053] In other embodiments, the fixed bracket 10 and the rotating bracket 20 may also include other structures, such as metal blocks; the tensioning member 30 may also include other structures, such as interlocking steel strips; and the elastic abutment member 40 may also include other structures, such as springs or other elastic structures.

[0054] In some embodiments, the upper end of the rotating bracket 20 is rotatably connected to the fixed bracket 10, the lower end of the rotating bracket 20 extends out of the fixed bracket 10, and the tensioning member 30 is installed at the lower end of the rotating bracket 20; the fixed bracket 10 includes a clamping sidewall 12, which clamps the rotating bracket 20 with the elastic abutment member 40; the abutment arc surface 32 faces the rotating bracket 20 on one side, and the elastic abutment member 40 is located on the other opposite side of the rotating bracket 20.

[0055] With the above structure, the lower end of the rotating bracket 20 extends out of the fixed bracket 10, and the tensioning component 30 is installed at the lower end of the rotating bracket 20. The tensioning component 30 can be installed at the lower end of the rotating bracket 20 first, and then the upper end of the rotating bracket 20 can be rotatably connected to the fixed bracket 10; so that the assembly between the fixed bracket 10, the rotating bracket 20 and the tensioning component 30 is more convenient.

[0056] Furthermore, when the tension provided by the abutting arc surface 32 to the conveyor chain 300 is large, the elastic abutting component 40 needs to provide greater elastic force to the rotating bracket 20. The elastic deformation of the elastic abutting component 40 is large, and the rotating bracket 20 rotates relative to the fixed bracket 10 in the direction of increasing elastic deformation of the elastic abutting component 40. The tensioning component 30 can contract into the space enclosed by the conveyor chain 300 to reduce the tension required by the conveyor chain 300. Similarly, when the tension provided by the abutting arc surface 32 to the conveyor chain 300 is small, the tensioning component 30 can expand outward from the space enclosed by the conveyor chain 300 to increase the tension required by the conveyor chain 300. Thus, the chain tensioning component 100 can adapt to the tension of the chain to reduce the possibility of the conveyor chain 300 becoming loose.

[0057] Specifically, in this embodiment, the rotating bracket 20 can be formed into a block-like hollow structure, and the cross-sectional area of ​​the space enclosed by the rotating bracket 20 gradually increases from top to bottom; the tensioning component 30 can be fixed to the lower end of the rotating bracket 20 by two bolts.

[0058] In other embodiments, the rotating bracket 20 may also be in other shapes, such as a cylinder; the tensioning member 30 may also be connected to the lower end of the rotating bracket 20 in other ways, such as by welding or snap-fitting.

[0059] Please refer to Figure 3 and Figure 4 In some embodiments, the elastic abutment component 40 includes a guide 42, a fixing member 44, an adjusting member 46, and a spring member 48. One end of the guide 42 passes through the rotating bracket 20 and the clamping sidewall 12 in sequence. The fixing member 44 and the adjusting member 46 are respectively connected to the two ends of the guide 42. The fixing member 44 and the rotating bracket 20 are respectively located on opposite sides of the clamping sidewall 12. The spring member 48 is sleeved on the guide 42 and is located between the rotating bracket 20 and the adjusting member 46. The fixing member 44 is fixed to the clamping sidewall 12, and the adjusting member 46 can move or be fixed relative to the guide 42.

[0060] With the above structure, the chain tensioning assembly 100 is continuously subjected to pressure from the conveyor chain 300 during operation, which may cause the chain tensioning assembly 100 to shift relative to the frame 2000. The adjusting member 46 can move or be fixed relative to the guide member 42. When the chain tensioning assembly 100 shifts relative to the frame 2000, the adjusting member 46 can be moved a certain distance relative to the guide member 42 to reset the chain tensioning assembly 100 relative to the frame 2000, and then the adjusting member 46 can be fixed to the guide member 42.

[0061] Specifically, in this embodiment, the guide member 42 may include a threaded rod, the adjusting member 46 may include a nut and a washer, and the adjusting member 46 and the elastic abutment member 40 together clamp the frame 2000; the adjusting member 46 can be turned with a wrench so that the adjusting member 46 moves relative to the frame 2000.

[0062] In other embodiments, the guide 42 may also include other structures, such as multiple insertion holes on the guide 42, and the adjusting member 46 may include a pin that can be inserted into different insertion holes.

[0063] In some embodiments, the spring member 48 extends parallel to the horizontal plane, and the abutting arc surface 32 is inclined downward.

[0064] With the above structure, the extension direction of the spring member 48 is parallel to the horizontal plane, so that the elastic force of the elastic contact member 40 on the rotating bracket 20 is parallel to the horizontal plane; the contact arc surface 32 is inclined downward, so that the contact arc surface 32 can be inclined, and the part of the conveyor chain 300 that abuts against the contact arc surface 32 is also inclined. The inclination direction of the contact arc surface 32 is adapted to the inclination direction of the part of the conveyor chain 300 that abuts against the contact arc surface 32, so that the conveyor chain 300 can fit more tightly against the contact arc surface 32.

[0065] Specifically, the tensioning component 30 can be fixed to the rotating bracket 20 by two bolts. The direction of one bolt to the other bolt is inclined relative to the horizontal plane, and the two bolts are symmetrically distributed relative to the center line of the tensioning component 30, so that the orientation of the abutting arc surface 32 is inclined downward.

[0066] In some embodiments, the guide member 42 includes a bolt, and the fixing member 44 includes a positioning nut 442, a body 444, a first limiting protrusion 446 and a second limiting protrusion 448. The body 444 is sleeved on the guide member 42, the positioning nut 442 is threadedly connected to the guide member 42, and the first limiting protrusion 446 and the second limiting protrusion 448 are respectively located on opposite sides of the body 444.

[0067] The fixed bracket 10 also includes a first limiting sidewall 14 and a second limiting sidewall 16. The first limiting sidewall 14 and the second limiting sidewall 16 are respectively connected to the opposite sides of the clamping sidewall 12. The first limiting protrusion 446 is fixed to the first limiting sidewall 14, and the second limiting protrusion 448 is fixed to the second limiting sidewall 16. The body 444 and the nut of the guide member 42 clamp the positioning nut 442.

[0068] With the above structure, the main body 444 is sleeved on the guide member 42, and the first limiting protrusion 446 and the second limiting protrusion 448 are respectively located on opposite sides of the main body 444. The first limiting protrusion 446 is fixed to the first limiting sidewall 14, and the second limiting protrusion 448 is fixed to the second limiting sidewall 16, so that the fixing member 44 can be stably fixed to the fixing bracket 10. In addition, the nut of the main body 444 and the guide member 42 clamps the positioning nut 442, so that the positioning nut 442 cannot rotate relative to the guide member 42, and the positioning nut 442 is fixed on the guide member 42.

[0069] Specifically, in this embodiment, the body 444 can be a rectangular sheet structure, and the first limiting protrusion 446 and the second limiting protrusion 448 can both be cylindrical structures. The first limiting protrusion 446 and the second limiting protrusion 448 can be coaxially arranged, and the body 444, the first limiting protrusion 446 and the second limiting protrusion 448 can be integrally formed. The body 444, the first limiting protrusion 446 and the second limiting protrusion 448 can be embedded in the fixing bracket 10 so that the first limiting protrusion 446 is fixed to the first limiting sidewall 14 and the second limiting protrusion 448 is fixed to the second limiting sidewall 16. The positioning nut 442 is threadedly connected to the guide member 42.

[0070] The clamping sidewall 12, the first limiting sidewall 14, and the second limiting sidewall 16 can all include steel plates, and the first limiting sidewall 14 and the second limiting sidewall 16 can be formed by a bending process.

[0071] In other embodiments, the first limiting protrusion 446 and the first limiting sidewall 14, the second limiting protrusion 448 and the second limiting sidewall 16, and the body 444 and the clamping sidewall 12 can also be fixed by other means, such as welding or snap-fitting.

[0072] In some embodiments, the first limiting sidewall 14 is perpendicular to the clamping sidewall 12, and the first limiting sidewall 14 is parallel to the second limiting sidewall 16.

[0073] The first limiting sidewall 14 has a first limiting groove 1402, the second limiting sidewall 16 has a second limiting groove 1602, and the clamping sidewall 12 has a third limiting groove 1202. The first limiting groove 1402 communicates with the second limiting groove 1602 through the third limiting groove 1202. The first limiting protrusion 446 is fixed in the first limiting groove 1402, the second limiting protrusion 448 is fixed in the second limiting groove 1602, and the body 444 is fixed in the third limiting groove 1202.

[0074] With the above structure, the first limiting protrusion 446 is fixed in the first limiting groove 1402, the second limiting protrusion 448 is fixed in the second limiting groove 1602, and the body 444 is fixed in the third limiting groove 1202. By simply embedding the fixing member 44 into the fixing bracket 10, the first limiting protrusion 446 and the first limiting sidewall 14, the second limiting protrusion 448 and the second limiting sidewall 16, and the body 444 and the clamping sidewall 12 can be fixed to each other, which simplifies the assembly process between the fixing member 44 and the fixing bracket 10.

[0075] Specifically, the first limiting groove 1402 and the second limiting groove 1602 can both be semi-circular through grooves, and the first limiting groove 1402 and the second limiting groove 1602 can be located at the same height; the third limiting groove 1202 can be a rectangular through groove, and the opposite sides of the third limiting groove 1202 respectively penetrate the opposite sides of the clamping sidewall 12, and the first limiting groove 1402 can be connected to the second limiting groove 1602 through the third limiting groove 1202.

[0076] In some embodiments, the elastic abutment component 40 further includes a nut limiting component 49, which is fixed to the fixed bracket 10. The nut limiting component 49 has a fourth limiting groove 4902, and the guide component 42 passes through the fourth limiting groove 4902. The groove wall of the fourth limiting groove 4902 is connected to the positioning nut 442 to prevent rotation.

[0077] With the above structure, the nut limiting member 49 is fixed to the fixed bracket 10, and the groove wall of the fourth limiting groove 4902 is connected to the positioning nut 442 to prevent rotation, so that the positioning nut 442 cannot rotate axially around the guide rod, which further improves the stability of the fixing member 44 relative to the fixed frame 2000.

[0078] Specifically, the nut limiting member 49 may include a sheet metal structure, and the two sides of the nut limiting member 49 may be fixed to the first limiting sidewall 14 and the second limiting sidewall 16 by screws respectively.

[0079] The positioning nut 442 can be a hexagonal nut, and the fourth limiting groove 4902 can be a rectangular through groove. The groove walls on opposite sides of the fourth limiting groove 4902 can clamp the positioning nut 442 so that the groove wall of the fourth limiting groove 4902 is connected to the positioning nut 442 to prevent rotation.

[0080] Please refer to Figure 5 In some embodiments, the chain tensioning assembly 100 further includes at least two locking members 50, and the tensioning member 30 is fixedly connected to the rotating bracket 20 via all the locking members 50.

[0081] With the above structure, the tensioning component 30 is fixedly connected to the rotating bracket 20 by all the locking components 50, so that the tensioning component 30 cannot rotate relative to the rotating bracket 20, so that the tensioning component 30 and the rotating bracket 20 can be connected more stably.

[0082] In the horizontal direction, when the pressure on the tensioning member 30 from the conveyor chain 300 is greater than the elastic force on the rotating bracket 20 from the spring member 48, the tensioning member 30 can drive the rotating bracket 20 to further press against the spring member 48 until the pressure on the tensioning member 30 from the conveyor chain 300 is equal to the elastic force on the rotating bracket 20 from the spring member 48. Alternatively, when the pressure on the tensioning member 30 from the conveyor chain 300 is less than the elastic force on the rotating bracket 20 from the spring member 48, the rotating bracket 20 can drive the tensioning member 30 to further press against the conveyor chain 300 until the pressure on the tensioning member 30 from the conveyor chain 300 is equal to the elastic force on the rotating bracket 20 from the spring member 48.

[0083] Specifically, in this embodiment, the locking member 50 may include a bolt, the rotating bracket 20 may have a relief groove 22, the tensioning member 30 may be located in the relief groove 22 and between two oppositely arranged side walls of the rotating bracket 20, and the locking member 50 may be sequentially inserted through the two oppositely arranged side walls of the rotating bracket 20 and the tensioning member 30; the number of locking members 50 is two.

[0084] In other embodiments, the number of locking elements 50 may be other, such as three or four; the locking elements 50 may also include other structures, such as latches.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail; although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A chain tensioning assembly, characterized by, include: Fixed bracket; A rotating bracket, which is rotatably connected to the fixed bracket; Tensioning component, the tensioning component being connected to the rotating bracket, the tensioning component including an abutting arc surface; An elastic abutment component is provided, one end of which is connected to the rotating bracket. The elastic abutment component is capable of elastic deformation, providing elastic force to the rotating bracket, so that the abutment arc surface presses against the chain.

2. A chain tensioning assembly according to claim 1, wherein, The upper end of the rotating bracket is rotatably connected to the fixed bracket, the lower end of the rotating bracket extends out of the fixed bracket, and the tensioning component is installed at the lower end of the rotating bracket. The fixed bracket includes a clamping sidewall, which clamps the rotating bracket with the elastic abutment member; the abutment arc surface faces the rotating bracket on one side, and the elastic abutment member is located on the opposite side of the rotating bracket.

3. A chain tensioning assembly according to claim 2, wherein, The elastic abutment component includes a guide, a fixing member, an adjusting member, and a spring. One end of the guide passes through the rotating bracket and the clamping sidewall in sequence. The fixing member and the adjusting member are respectively connected to the two ends of the guide. The fixing member and the rotating bracket are respectively located on opposite sides of the clamping sidewall. The spring is sleeved on the guide and is located between the rotating bracket and the adjusting member. The fixing member is fixed to the clamping sidewall, and the adjusting member can move or be fixed relative to the guide member.

4. A chain tensioning assembly according to claim 3, wherein, The spring extends parallel to the horizontal plane, and the contact arc surface is inclined downwards.

5. A chain tensioning assembly according to claim 3, wherein, The guide includes a bolt, and the fixing member includes a positioning nut, a body, a first limiting protrusion, and a second limiting protrusion. The body is sleeved on the guide, and the positioning nut is threadedly connected to the guide. The first limiting protrusion and the second limiting protrusion are located on opposite sides of the body. The fixing bracket further includes a first limiting sidewall and a second limiting sidewall, the first limiting sidewall and the second limiting sidewall are respectively connected to the opposite sides of the clamping sidewall, the first limiting protrusion is fixed to the first limiting sidewall, the second limiting protrusion is fixed to the second limiting sidewall, and the positioning nut is clamped by the nut of the body and the guide member.

6. A chain tensioning assembly according to claim 5, wherein, The first limiting sidewall is perpendicular to the clamping sidewall, and the first limiting sidewall is parallel to the second limiting sidewall; The first limiting sidewall has a first limiting groove, the second limiting sidewall has a second limiting groove, the clamping sidewall has a third limiting groove, the first limiting groove is connected to the second limiting groove through the third limiting groove, the first limiting protrusion is fixed in the first limiting groove, the second limiting protrusion is fixed in the second limiting groove, and the body is fixed in the third limiting groove.

7. A chain tensioning assembly according to claim 6, characterized in that, The elastic abutment component also includes a nut limiting component, which is fixed to the fixed bracket. The nut limiting component has a fourth limiting groove, and the guide component passes through the fourth limiting groove. The groove wall of the fourth limiting groove is connected to the positioning nut to prevent rotation.

8. A chain tensioning assembly according to claim 1, wherein, It also includes at least two locking elements, and the tensioning component is fixedly connected to the rotating bracket via all of the locking elements.

9. A fruit and vegetable conveying mechanism, characterized in that, The device includes a drive assembly, a conveyor chain, and a chain tensioning assembly as described in any one of claims 1-8, wherein the drive assembly is used to drive the conveyor chain to move, and the abutting arc surface abuts against the conveyor chain.

10. A fruit and vegetable sorting device, characterized in that, It includes a frame and the fruit and vegetable conveying mechanism as described in claim 9, wherein the end of the elastic abutment member facing away from the rotating bracket is connected to the frame.

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