Conveying device for rice processing

Abstract

The present application relates to the technical field of agricultural product conveying, and particularly relates to a conveying device for rice processing, which comprises a conveyor table and a conveying belt, the outer part of the conveyor table is fixedly connected with two mounting rack plates, the opposite sides of the two mounting rack plates are both provided with rice supporting tables, the inner parts of the two mounting rack plates are both provided with sliding storage assemblies for assisting the contraction of the rice supporting tables, the outer parts of each mounting rack plate are both provided with a direct motion assembly and a rotary conversion deceleration assembly for buffering the descent of the rice supporting table, the vertical linear motion of the rice supporting table is converted into rotary motion through the direct motion assembly and the rotary conversion deceleration assembly, and the torsional energy storage design of the buffer torsional spring is matched, so that the full stroke continuous linear buffering starting from the instant of material falling is realized, the falling impact force of the bagged rice is stably offset throughout the stroke, there is no hard impact node, the risk of packaging bag breakage and rice scattering caused by impact of the material is greatly reduced, and the conveying quality of the finished product is ensured.

Description

Technical Field

[0001] This invention relates to the technical field of agricultural product transportation, and in particular to a conveying device for rice processing. Background Technology

[0002] With the continuous development of the agricultural products industry, the rice processing industry is rapidly developing towards large-scale, continuous, and standardized operations. The bagged transportation of finished rice is the core process at the end of the entire rice processing process. The stability of its transportation operation and the protection effect of the finished products directly determine the finished product qualification rate, production efficiency, and overall production cost of rice production enterprises.

[0003] Currently, the industry commonly uses belt conveyors as the core conveying equipment for the continuous transfer of bagged finished rice. The material receiving point at the conveyor belt outlet is a crucial node that determines the effectiveness of finished product protection in the entire conveying process. When bagged rice is discharged from the conveyor belt outlet, it experiences vertical acceleration due to its own weight, resulting in a significant rigid impact. If this impact is not effectively buffered, it can easily cause damage to the rice packaging bags and spillage of finished rice, directly increasing production losses for enterprises. Furthermore, continuous rigid impact can cause irreversible structural fatigue to the conveyor equipment itself. Damage significantly shortens the normal service life of equipment. The direct-pressure spring buffer and rubber pad hard buffer commonly used in the industry are both end-contact buffer designs. They can only provide reverse buffering force through the compression deformation of the spring or rubber pad when the bagged rice falls to the end of the stroke. They cannot cover the entire downward stroke from the initial moment of falling to the end of the fall. The instantaneous rigid impact at the beginning of the fall cannot be effectively eliminated. Not only can it not fundamentally avoid the core problems of packaging bag damage and finished product loss, but continuous instantaneous impact will also accelerate the fatigue damage of the equipment structure and further shorten the service life of the equipment. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a conveying device for rice processing.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a conveying device for rice processing, comprising a conveyor platform and a conveyor belt. The conveyor belt is assembled outside the conveyor platform and driven by a drive motor. Two mounting plates are fixedly connected to the outside of the conveyor platform. The two mounting plates are located on the discharge side outside the conveyor belt. Rice support platforms are provided on the opposite sides of the two mounting plates. The opposite sides of the upper surfaces of the two rice support platforms are inclined to support bagged rice. Receiving slots are opened on the opposite sides of the two mounting plates. A plurality of friction-reducing balls are rotatably embedded in the inner wall of each receiving slot. The friction-reducing balls are used to reduce the frictional resistance generated by the lateral movement of the rice support platforms inside the receiving slots.

[0006] Both mounting brackets are internally equipped with sliding storage components to assist in the retraction of the rice support platform. Each sliding storage component includes a sliding receiving cavity and two guide grooves. The sliding receiving cavity is located inside the mounting bracket and communicates with the interior of the receiving slot. The two guide grooves are located outside the mounting bracket and communicate with the interior of the sliding receiving cavity. A lifting sliding linkage is slidably connected inside each guide groove. The lifting sliding linkage is fixedly connected to the exterior of the rice support platform. The support platform moves stably upwards or downwards outside the mounting frame via two lifting and sliding linkages. Each lifting and sliding linkage has a fixed sliding bearing seat at the end furthest from the rice support platform. The sliding bearing seat is located inside the sliding receiving cavity. A transverse guide rod is movably connected to the interior of each sliding bearing seat and the lifting and sliding linkage. A spring limit seat is fixedly connected to the end of each transverse guide rod furthest from the lifting and sliding linkage. A transverse return spring is provided on the side of each spring limit seat facing the sliding bearing seat. Both ends of the spring are fixedly connected to the opposite side of the sliding support seat and the spring limiting seat. A lifting linkage plate is fixedly connected to the opposite side of the two spring limiting seats. A synchronous connecting horizontal plate is fixedly connected to the opposite side of the two sliding support seats. The synchronous connecting horizontal plate is used to synchronously connect the two sliding support seats, so that the two sliding support seats move synchronously when they move. A lower limit stop is fixedly connected to the outside of the lifting linkage plate. When the lifting linkage plate moves downward, it drives the lower limit stop to move downward synchronously. When the lower limit stop moves down to fit against the bottom wall of the sliding cavity, it can limit the maximum downward stroke of the lifting linkage plate and the two spring limiting seats, thereby limiting the maximum downward movement distance of the rice support platform. Limiting cavities are opened inside the rice support platform, the lifting sliding linkage, and the sliding support seat. The end of the transverse guide slide rod away from the spring limiting seat moves through the sliding support seat and extends into the interior of the limiting cavity. A limiting ring plate is fixedly connected to the end of the transverse guide slide rod away from the spring limiting seat. The limiting ring plate is movably connected inside the limiting cavity.

[0007] As a preferred embodiment of the present invention, each mounting plate is provided with a direct-acting component and a rotary reversing deceleration component on its exterior for buffering the descent of the rice support platform. The direct-acting assembly includes a rack guide groove, a rack connecting slider, and a lifting transmission rack. The rack guide groove is located on the outside of the mounting plate, away from the rice support platform. The rack connecting slider is slidably connected inside the rack guide groove and fixedly connected to the outside of the lifting linkage plate. The upward or downward movement of the lifting linkage plate within the sliding cavity drives the rack connecting slider to move synchronously upward or downward within the rack guide groove. The lifting transmission rack is fixedly connected on the outside of the rack connecting slider, away from the lifting linkage plate. The lifting transmission rack is a long strip plate, and one side wall of the lifting transmission rack is integrally formed with continuous teeth along its length, making the side wall of the lifting transmission rack a rack structure. A slider guide rod is fixedly connected inside the rack guide groove. The rack connecting slider is movably sleeved outside the slider guide rod, and the slider guide rod limits the rack connecting slider, allowing it to move stably upward or downward within the rack guide groove.

[0008] As a preferred embodiment of the present invention, the rotary reversing deceleration assembly includes a gear mounting shaft, a transmission gear, and an outer shell. The gear mounting shaft is fixedly connected to the outside of the mounting plate, and the transmission gear is rotatably connected to the outside of the gear mounting shaft and meshes with a lifting transmission rack. The outer shell is fixed to the outside of the mounting plate by a fixed support rod. One end of the fixed support rod is fixedly connected to the outside of the mounting plate, and the end of the fixed support rod away from the mounting plate is fixedly connected to the outer shell. The inside of the outer shell is hollow, and the outer shell is movably fitted onto the outside of the gear mounting shaft. A torsion spring adjusting disc is rotatably connected inside the outer shell. A buffer torsion spring is fixedly connected to the side of the torsion spring adjusting disc facing the transmission gear. The buffer torsion spring applies a rotational force to the transmission gear. A pre-tightening adjusting disc is fixedly connected to the outside of the torsion spring adjusting disc. Rotating the pre-tightening adjusting disc can drive the torsion spring adjusting disc to move, thereby causing the buffer torsion spring to be torsionally tightened. By rotating the pre-tightening adjusting disc to adjust the torsion spring adjusting disc, the pre-tightening force of the buffer torsion spring can be adjusted, thus adapting to the use of bagged rice of different weights.

[0009] As a preferred technical solution of the present invention, a locking toothed disc is fixedly connected to the outside of the outer shell. The locking toothed disc has several locking tooth grooves on its outside. The several locking tooth grooves are evenly arranged in a ring around the circumference of the locking toothed disc. Two tooth groove blocks are fixedly connected inside each locking tooth groove, and a gap is reserved between the two tooth groove blocks. A stop assembly is provided on the outer side of the preload adjustment turntable to position and lock its rotation. The stop assembly includes a pawl mounting seat, which is fixedly connected to the outside of the preload adjustment turntable. A pawl shaft is rotatably connected inside the pawl mounting seat, and a locking pawl is fixedly connected to the outside of the pawl shaft. The locking pawl rotates inside the pawl mounting seat via the pawl shaft. The width of the locking pawl is the same as the width of the gap reserved between the two toothed stops. The locking pawl rotates inside the pawl mounting seat around the pawl shaft and extends through the gap into the locking tooth groove. The rotational elastic force generated by the buffer torsion spring drives the preload adjustment turntable to rotate, thereby causing the locking pawl to deflect and press against the inner wall of the locking tooth groove, thus achieving preload adjustment. The rotary table is circumferentially locked and fixed. Both sides of the locking pawl are provided with a pin receiving groove. The inside of the pin receiving groove is movably connected to a pin baffle. Two pin return springs are fixedly connected to the outside of the pin baffle. The end of the pin return spring away from the pin baffle is fixedly connected to the inner wall of the pin receiving groove. The end of the pin baffle away from the pin return spring is fixedly connected to an anti-disengagement pin. The anti-disengagement pin moves laterally inside the pin receiving groove through the pin baffle and the pin return spring. The side of the anti-disengagement pin near the inside of the locking tooth groove is set in an inclined shape. The anti-disengagement pin limits the overall position of the locking pawl. The position of the locking pawl is limited by the pressure of the two anti-disengagement pins and the two tooth groove blocks, so as to prevent the locking pawl from disengaging from the inside of the locking tooth groove.

[0010] Compared with the prior art, the beneficial effects that this invention can achieve are: This invention transforms the vertical linear motion of the rice support platform downwards into rotational motion by incorporating a linear motion component and a rotary reversing deceleration component. Combined with the torsional energy storage design of the buffer torsion spring, it achieves smooth and stable feeding of bagged rice. Compared with conventional buffer structures commonly used in the field of bagged rice conveying, such as direct pressure spring buffers, rubber pad hard buffers, pneumatic and hydraulic buffers, it has significant advantages in multiple dimensions. It not only solves the core problem of existing conventional buffer structures that can only provide buffering force at the end of the stroke and cannot eliminate the instantaneous impact at the beginning of the feeding process, but also achieves continuous linear buffering throughout the entire stroke from the moment of feeding. It smoothly offsets the impact force of the falling bagged rice throughout the entire process, with no hard impact points, greatly reducing the risk of packaging bag damage and rice spillage caused by impact, and ensuring the quality of finished product conveying.

[0011] This invention features a rice support platform structure that is precisely adapted to the discharge end of the conveyor belt. This structure can stably support continuously conveyed bagged rice. With the limiting action of the lower limit block and the sliding receiving cavity, the maximum downward stroke of the support structure can be precisely limited, effectively avoiding equipment damage and material spillage caused by over-travel impact. The inclined guide surface design on the upper surface of the rice support platform, along with the self-weight of the bagged rice, drives the two support platforms to automatically open and close, achieving smooth material unloading and seamless connection to the next process. No additional unloading drive mechanism is required, simplifying the device structure and reducing operating energy consumption.

[0012] This invention, by setting up a rotary reversing deceleration component in conjunction with a stop component, and adjusting the rotation of the circular plate through a pre-tensioning adjustment turntable linked to a torsion spring, flexibly controls the initial pre-tension of the buffer torsion spring, effectively adapting to the buffering needs of bagged rice of different weights and specifications, and greatly improving the device's adaptability and versatility. At the same time, by cooperating with a locking pawl and an anti-disengagement pin with an elastic reset structure, the pre-tensioning adjustment turntable can be quickly unlocked and circumferentially locked, making operation convenient and efficient.

[0013] This invention limits the maximum lateral retraction stroke of the rice support platform by synchronously connecting the horizontal plate and the lower limit stop, avoiding the inability to reset and equipment jamming caused by excessive retraction of the support platform. The synchronous connecting horizontal plate ensures that the movement of the support structures on both sides is completely synchronized, effectively avoiding the problem of uneven loading and jamming, and greatly improving the stability, reliability and efficiency of continuous conveying operation of the device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the conveyor platform of the present invention; Figure 2 This is a schematic diagram of the structure of the rice support platform after it has been lowered according to the present invention; Figure 3 This is a side view of the mounting bracket of the present invention. Figure 4 This is a schematic diagram of the lifting transmission rack of the present invention; Figure 5 This is a partial cross-sectional view of the mounting bracket of the present invention; Figure 6 This is a schematic diagram of the structure of the rice support platform after it has shrunk. Figure 7 This is a bottom view of the accommodating slot structure of the present invention; Figure 8 This is a schematic diagram of the synchronous connection of the horizontal plate according to the present invention; Figure 9 This is a cross-sectional structural schematic diagram of the lifting and sliding linkage of the present invention; Figure 10 For the present invention Figure 5 A magnified schematic diagram of the local structure at point A; Figure 11 This is a cross-sectional view of the outer shell of the present invention; Figure 12 This is a cross-sectional view of the locking pawl of the present invention.

[0015] The components include: 10. Conveyor platform; 11. Conveyor belt; 12. Mounting frame; 13. Rice support platform; 14. Receiving slot; 15. Drag-reducing ball bearings; 20. Sliding receiving cavity; 21. Guide chute; 22. Lifting sliding linkage; 23. Sliding bearing seat; 24. Lateral guide slide rod; 25. Spring limit seat; 26. Lateral return spring; 27. Synchronous connecting plate; 28. Lifting linkage plate; 29. ​​Lower limit stop; 210. Limiting ring plate; 211. Limiting cavity; 30. Gear mounting shaft; 3 1. Transmission gear; 32. Outer shell; 33. Buffer torsion spring; 34. Torsion spring adjusting plate; 35. Fixed support rod; 36. Preload adjusting turntable; 37. Locking gear plate; 38. Locking gear groove; 39. Gear groove stop block; 40. Pawl mounting seat; 41. Locking pawl; 42. Pawl shaft; 43. Locking pin receiving groove; 44. Locking pin baffle; 45. Locking pin return spring; 46. Anti-disengagement locking pin; 50. Rack guide groove; 51. Rack connecting slider; 52. Lifting transmission rack; 53. Slider guide rod. Detailed Implementation

[0016] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0017] Example: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 As shown, a conveying device for rice processing includes a conveyor platform 10 and a conveyor belt 11. The conveyor belt 11 is mounted on the outside of the conveyor platform 10 and is driven by a drive motor. Two mounting plates 12 are fixedly connected to the outside of the conveyor platform 10. The two mounting plates 12 are located on the discharge side of the conveyor belt 11. Rice support platforms 13 are provided on the opposite sides of the two mounting plates 12. The opposite sides of the upper surfaces of the two rice support platforms 13 are inclined to support bagged rice. A receiving slot 14 is opened on the opposite sides of the two mounting plates 12. A plurality of friction-reducing balls 15 are rotatably embedded in the inner wall of each receiving slot 14. The friction-reducing balls 15 are used to reduce the frictional resistance generated by the lateral movement of the rice support platform 13 inside the receiving slot 14.

[0018] like Figure 1 , Figure 2 , Figure 3, Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, both mounting plates 12 are equipped with sliding storage components to assist in the retraction of the rice support platform 13. Each sliding storage component includes a sliding receiving cavity 20 and two guide grooves 21. The sliding receiving cavity 20 is located inside the mounting plate 12 and is connected to the inside of the receiving slot 14. The two guide grooves 21 are located outside the mounting plate 12 and are connected to the inside of the sliding receiving cavity 20. Each guide groove 21 is slidably connected to a lifting sliding link 22. The lifting sliding link 22 is fixedly connected to the outside of the rice support platform 13. The rice support platform 13 is located outside the mounting plate 12 via the two lifting sliding links 22. The lifting and sliding linkage 22 moves stably upwards or downwards. Each end of the lifting and sliding linkage 22 away from the rice support platform 13 is fixedly connected to a sliding bearing seat 23. The sliding bearing seat 23 is located inside the sliding receiving cavity 20. A transverse guide slide rod 24 is movably connected to the interior of each sliding bearing seat 23 and the lifting and sliding linkage 22. A spring limiting seat 25 is fixedly connected to the end of each transverse guide slide rod 24 away from the lifting and sliding linkage 22. A transverse return spring 26 is provided on the side of each spring limiting seat 25 facing the sliding bearing seat 23. The two ends of the transverse return spring 26 are respectively fixedly connected to the side of the sliding bearing seat 23 facing the spring limiting seat 25. The two sides of the two spring limiting seats 25 facing each other are fixedly connected... A lifting linkage plate 28 is connected to the two sliding support seats 23, and a synchronous connecting horizontal plate 27 is fixedly connected to one side of the two sliding support seats 23 facing each other. The synchronous connecting horizontal plate 27 is used to synchronously connect the two sliding support seats 23, so that the two sliding support seats 23 move synchronously when they move. A lower limit stop 29 is fixedly connected to the outside of the lifting linkage plate 28. When the lifting linkage plate 28 moves downward, it drives the lower limit stop 29 to move downward synchronously. When the lower limit stop 29 moves down to abut against the bottom wall of the sliding receiving cavity 20, it can limit the maximum downward stroke of the lifting linkage plate 28 and the two spring limit seats 25, thereby limiting the maximum downward movement distance of the rice support platform 13. The rice support platform 13, the lifting sliding linkage 28, and the lower limit stop 29 are all connected. A limiting cavity 211 is formed inside the sliding support 23. The end of the transverse guide slide rod 24 away from the spring limiting seat 25 moves through the sliding support 23 and extends into the limiting cavity 211. The end of the transverse guide slide rod 24 away from the spring limiting seat 25 is fixedly connected to a limiting ring plate 210. The limiting ring plate 210 is movably connected inside the limiting cavity 211. The limiting ring plate 210 limits the transverse guide slide rod 24, thereby limiting the movement distance of the sliding support 23 away from the inside of the receiving slot 14. This ensures that when the transverse reset spring 26 resets and drives the sliding support 23 and the lifting sliding connecting rod 22 to reset, they can be aligned with the position of the guide slide groove 21.

[0019] The conveyor belt 11 continuously transports the bagged rice. When the bagged rice is transported to the top of the rice support platform 13, the continuous operation of the conveyor belt 11 smoothly drops the bagged rice onto the upper surface of the two rice support platforms 13. The weight of the bagged rice causes the two rice support platforms 13 to move vertically downward between the two mounting plates 12. As the rice support platforms 13 move downward, they also cause the two lifting sliding linkages 22 to move downward synchronously along the two guide slides 21. The lifting sliding linkages 22 simultaneously cause the two sliding bearing seats 23 and the two spring limit seats 25 to move downward synchronously. The two spring limit seats 25 cause the lifting linkage plate 28 and the lower limit stop 29 to move downward continuously until the lower limit stop 29 moves down to fit against the inner bottom wall of the sliding receiving cavity 20, thus completing the maximum downward stroke limit of the overall downward structure.

[0020] At this time, the bagged rice continues to exert vertical gravity on the two rice support platforms 13. Guided by the inclined guide surfaces on the upper surfaces of the two rice support platforms 13, the bagged rice pushes the rice support platforms 13 on both sides downward, causing the two rice support platforms 13 to move laterally and open in a direction away from each other. The rice support platforms 13 simultaneously drive the lifting sliding connecting rod 22 and the sliding bearing seat 23 to move laterally, so that the lateral return spring 26 is compressed and stores energy along the axial direction of the lateral guide slide rod 24. At the same time, the rice support platform 13 slides laterally along the receiving slot 14 and retracts into the interior of the sliding receiving cavity 20. At this time, the bagged rice falls down through the two rice support platforms 13 and enters the next process.

[0021] During the process of the rice support platform 13 retracting and causing the sliding support seat 23 to move laterally, the side of the lower limit stop block 29 abuts against the synchronous connecting horizontal plate 27, thereby limiting the maximum lateral retraction stroke of the rice support platform 13 within the sliding receiving cavity 20, and avoiding the problem that the rice support platform 13 retracts excessively and cannot return to its original position.

[0022] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 10 and Figure 11As shown, each mounting plate 12 is equipped with a direct-acting component and a rotary reversing deceleration component on its exterior to buffer the descent of the rice support platform 13. The direct-acting component includes a rack guide groove 50, a rack connecting slider 51, and a lifting transmission rack 52. The rack guide groove 50 is located on the exterior of the mounting plate 12 away from the rice support platform 13. The rack connecting slider 51 is slidably connected inside the rack guide groove 50 and fixedly connected to the exterior of the lifting linkage plate 28. The upward or downward movement of the lifting linkage plate 28 within the sliding receiving cavity 20 drives the rack connecting slider 51 to move within the rack guide groove 50. The lifting transmission rack 52 is fixedly connected to the outside of the rack connecting slider 51 on the side away from the lifting linkage plate 28, and moves synchronously upward or downward. The lifting transmission rack 52 is a long strip plate. One side wall of the lifting transmission rack 52 is integrally formed with continuous teeth along the length direction, so that the side wall of the lifting transmission rack 52 forms a rack structure as a whole. The inside of the rack guide groove 50 is fixedly connected to the slider guide rod 53. The rack connecting slider 51 is movably sleeved on the outside of the slider guide rod 53. The slider guide rod 53 limits the rack connecting slider 51, so that the rack connecting slider 51 moves stably upward or downward inside the rack guide groove 50.

[0023] The rotary reversing reduction assembly includes a gear mounting shaft 30, a transmission gear 31, and an outer shell 32. The gear mounting shaft 30 is fixedly connected to the outside of the mounting plate 12. The transmission gear 31 is rotatably connected to the outside of the gear mounting shaft 30 and meshes with the lifting transmission rack 52. The outer shell 32 is fixed to the outside of the mounting plate 12 by a fixed support rod 35. One end of the fixed support rod 35 is fixedly connected to the outside of the mounting plate 12, and the end of the fixed support rod 35 away from the mounting plate 12 is fixedly connected to the outer shell 32. The interior of the outer shell 32 is hollow, and the outer shell 32 is movably fitted onto the gear. A torsion spring adjusting disc 34 is rotatably connected to the outside of the wheel mounting shaft 30 and inside the outer casing 32. A buffer torsion spring 33 is fixedly connected to the side of the torsion spring adjusting disc 34 facing the transmission gear 31. The buffer torsion spring 33 applies a rotational force to the transmission gear 31. A pre-tightening adjusting disc 36 is fixedly connected to the outside of the torsion spring adjusting disc 34. Rotating the pre-tightening adjusting disc 36 can drive the torsion spring adjusting disc 34 to move, thereby causing the buffer torsion spring 33 to be twisted and tightened. By rotating the pre-tightening adjusting disc 36 to adjust the torsion spring adjusting disc 34, the pre-tightening force of the buffer torsion spring 33 can be adjusted to adapt to the use of bagged rice of different weights.

[0024] When the bagged rice falls onto the upper surface of the rice support platform 13 and moves vertically downwards, the rice support platform 13 simultaneously drives the two spring limit seats 25 downwards. This, in turn, drives the rack and pinion connecting slider 51 to slide vertically downwards along the rack guide groove 50 via the lifting linkage plate 28. Simultaneously, the rack and pinion connecting slider 51 drives the lifting transmission rack 52 downwards, causing the lifting transmission rack 52 to mesh with the transmission gear 31. When the transmission gear 31 rotates, it drives the buffer torsion spring 33 to twist and tighten to store energy. During the continuous downward movement of the rice support platform 13 driven by the weight of the bagged rice, the meshing of the lifting transmission rack 52 and the transmission gear 31 converts the vertical linear motion of the rice support platform 13 downwards into the rotational motion of the transmission gear 31. This, in turn, drives the buffer torsion spring 33 to continuously twist and contract. The rotational elasticity of the buffer torsion spring 33 counteracts the impact force of the falling bagged rice, slowing down the downward speed of the rice support platform 13 and achieving a buffering effect on the falling bagged rice.

[0025] After the bagged rice is pushed open by the two rice support platforms 13 and falls between them to the bottom, the bagged rice completely separates from the rice support platforms 13. Once the bagged rice has completely fallen and separated from the two rice support platforms 13, the buffer torsion spring 33 continuously releases its rotational rebound force. This force tends to cause the rice support platforms 13 to rise vertically and reset. If the rice support platforms 13 have not yet completed their horizontal repositioning at this point, the rebound force of the buffer torsion spring 33 will first cause the rice support platforms 13 to rise slightly vertically, so that the outer wall of the rice support platforms 13 completely adheres to the inner wall of the receiving slot 14, and the rice support platforms 13 adhere to the receiving slot 14. After the inner wall of the 4th duct is closed, its outer wall makes full contact with the friction-reducing ball bearing 15 embedded in the inner wall of the receiving slot 14. Through the rolling characteristics of the friction-reducing ball bearing 15, the sliding friction of the rice support platform 13 during lateral movement is converted into rolling friction, which greatly reduces the frictional resistance of its lateral movement. At this time, the lateral return spring 26 drives the rice support platform 13 to complete the lateral closing and reset along the receiving slot 14. After the rice support platform 13 has completely completed the lateral reset, the continuous rotational return spring force of the buffer torsion spring 33 drives the rice support platform 13 to complete the vertical upward reset, so that the device returns to the initial waiting state and is ready to receive the next bag of rice.

[0026] like Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 10 , Figure 11 and Figure 12As shown, a locking toothed disc 37 is fixedly connected to the outside of the outer shell 32. The locking toothed disc 37 has several locking tooth grooves 38 on its outer surface, evenly arranged in a ring around the circumference of the locking toothed disc 37. Two tooth groove stops 39 are fixedly connected inside each locking tooth groove 38, with a gap reserved between the two tooth groove stops 39. A stop assembly is provided on the outer side of the pre-tensioning adjustment turntable 36 to position and lock its rotation. The stop assembly includes a pawl mounting seat 40, which is fixedly connected to the pre-tensioning adjustment turntable 36. Externally, a pawl shaft 42 is rotatably connected to the pawl mounting base 40. A locking pawl 41 is fixedly connected to the outside of the pawl shaft 42. The locking pawl 41 rotates inside the pawl mounting base 40 via the pawl shaft 42. The width of the locking pawl 41 is the same as the width of the gap reserved between the two toothed stops 39. The locking pawl 41 rotates inside the pawl mounting base 40 with the pawl shaft 42 as the pivot, and extends into the locking toothed groove 38 through the gap. The rotational force of the buffer torsion spring 33 drives the locking pawl 41 to engage with the locking toothed groove 38. The inner wall of the preload adjustment turntable 36 is pressed against the preload, rather than disengaged. The rotational force generated by the buffer torsion spring 33 drives the preload adjustment turntable 36 to rotate, thereby causing the locking pawl 41 to deflect and press against the inner wall of the locking tooth groove 38, thus achieving circumferential locking and fixing of the preload adjustment turntable 36. Both sides of the outer side of the locking pawl 41 are provided with a pin receiving groove 43. The inside of the pin receiving groove 43 is movably connected to a pin baffle 44. Two pin return springs 45 are fixedly connected to the outside of the pin baffle 44. The end of the pin return spring 45 away from the pin baffle 44 is fixedly connected to the pin. On the inner wall of the receiving groove 43, the end of the locking pin baffle 44 away from the locking pin return spring 45 is fixedly connected to an anti-disengagement pin 46. The anti-disengagement pin 46 moves laterally inside the locking pin receiving groove 43 through the locking pin baffle 44 and the locking pin return spring 45. The side of the anti-disengagement pin 46 near the inside of the locking tooth groove 38 is set in an inclined shape. The locking pawl 41 is limited as a whole by the anti-disengagement pin 46. The position of the locking pawl 41 is limited by the pressure of the two anti-disengagement pins 46 and the two tooth groove blocks 39, so as to prevent the locking pawl 41 from disengaging from the inside of the locking tooth groove 38.

[0027] Before conveying bagged rice, perform the pre-tightening adjustment and unlocking operation. Hold the two anti-detachment pins 46 and move them towards each other. After the two anti-detachment pins 46 are completely retracted into the pin receiving groove 43, rotate the locking pawl 41 around the pawl shaft 42 as the axis. This will cause the locking pawl 41 to pass through the gap between the two toothed blocks 39 and completely disengage from the inside of the locking toothed groove 38, releasing the circumferential lock on the pre-tightening adjustment turntable 36 and allowing the pre-tightening adjustment turntable 36 to rotate freely.

[0028] At this time, rotating the pre-tightening adjustment turntable 36 will drive the torsion spring adjustment disc 34 to rotate synchronously, thereby driving the buffer torsion spring 33 to be twisted and tightened. By rotating the pre-tightening adjustment turntable 36 to drive the torsion spring adjustment disc 34 to rotate, the initial pre-tightening force of the buffer torsion spring 33 can be flexibly adjusted to meet the buffering operation requirements of bagged rice of different weight specifications.

[0029] After the pre-tightening adjustment turntable 36 is rotated, the locking operation is performed. The locking pawl 41 is rotated toward the locking tooth groove 38 on the locking toothed disc 37. The locking pawl 41 drives the anti-detachment pins 46 on both sides to rotate synchronously, so that the inclined guide surface of the anti-detachment pins 46 contacts the two tooth groove blocks 39. Through the squeezing and guiding action of the tooth groove blocks 39 on the inclined guide surface, the two anti-detachment pins 46 are pushed to move the pin baffles 44 toward each other and retract into the corresponding pin receiving grooves 43. At the same time, during the retraction of the anti-detachment pins 46 and the pin baffles 44, the pin return springs 45 are compressed and stored. After the locking pawl 41 is fully inserted into the locking tooth groove 38, the pin return springs 45 release the rebound force, which drives the two anti-detachment pins 46 to move in the opposite direction to reset and engage into the locking tooth groove 38, thereby realizing the rapid circumferential locking and fixing of the pre-tightening adjustment turntable 36.

[0030] Working principle: In use: First, the conveyor belt 11 continuously transports bagged rice to the top of the rice support platform 13. The bagged rice falls onto the upper surface of the two rice support platforms 13, and its own weight causes the rice support platform 13 to move vertically downward between the two mounting plates 12. The rice support platform 13 simultaneously drives the lifting sliding linkage 22 to move downward along the guide slide 21, and simultaneously drives the sliding bearing seat 23, spring limit seat 25, lifting linkage plate 28 and lower limit stop 29 to move downward until the lower limit stop 29 is in contact with the bottom wall of the sliding receiving cavity 20. When the components meet, the maximum travel limit of the overall downward structure is completed. During the synchronous downward movement, the lifting linkage plate 28 drives the rack connecting slider 51 to move synchronously along the rack guide groove 50 and the lifting transmission rack 52. The lifting transmission rack 52 meshes with the transmission gear 31 to convert the vertical linear motion of the rice support platform 13 into the rotational motion of the transmission gear 31. This causes the buffer torsion spring 33 to twist and tighten to store energy. The rotational elasticity of the buffer torsion spring 33 is used to offset the impact force of the bagged rice falling and slow down the downward speed, thus achieving material drop buffering.

[0031] In the second step, after the downward limit is completed, the bagged rice continues to apply vertical gravity to the rice support platform 13, pushing the two rice support platforms 13 on both sides to open laterally in a direction away from each other along the inclined guide surface on the upper surface of the rice support platform 13. The rice support platform 13 simultaneously drives the lifting sliding connecting rod 22 and the sliding bearing seat 23 to move laterally, so that the lateral return spring 26 is axially compressed and stores energy along the lateral guide slide rod 24. At the same time, the rice support platform 13 slides laterally along the receiving slot 14 and retracts into the sliding receiving cavity 20. The bagged rice falls from between the two rice support platforms 13 to the next process.

[0032] In the third step, after the bagged rice is completely detached from the rice support platform 13, the buffer torsion spring 33 continuously releases its rotational rebound force, causing the rice support platform 13 to rise vertically, so that its outer wall fits against the inner wall of the receiving slot 14 and contacts the drag-reducing ball 15 inside the receiving slot 14. The drag-reducing ball 15 converts sliding friction into rolling friction, greatly reducing lateral movement resistance. At this time, the rebound force of the lateral return spring 26 causes the rice support platform 13 to complete the lateral closing and reset along the receiving slot 14. With the continuous rebound force of the buffer torsion spring 33, the rice support platform 13 is then driven to rise vertically and reset as a whole. The device returns to its initial waiting state and can receive the buffering operation of the next bag of rice.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A conveying device for rice processing, comprising a conveyor platform (10) and a conveyor belt (11), wherein the conveyor belt (11) is mounted on the outside of the conveyor platform (10), characterized in that, The conveyor platform (10) has two mounting plates (12) fixedly connected to its exterior. Each of the two mounting plates (12) has a rice support platform (13) on one side facing each other, and each of the two mounting plates (12) has a receiving slot (14) on one side facing each other. Both mounting brackets (12) are equipped with sliding storage components to assist the retraction of the rice support platform (13); Each of the mounting plates (12) is provided with a linear motion assembly and a rotary reversing deceleration assembly on the outside for buffering the descent of the rice support platform (13); The direct-drive assembly includes a rack guide groove (50) for driving with the rice support platform (13), a rack connecting slider (51) and a lifting drive rack (52). The rotary reversing deceleration assembly includes a gear mounting shaft (30), a transmission gear (31), and an outer shell (32). The gear mounting shaft (30) is fixedly connected to the outside of the mounting plate (12). The transmission gear (31) is rotatably connected to the outside of the gear mounting shaft (30), and the transmission gear (31) meshes with the lifting transmission rack (52). The outer shell (32) is fixed to the outside of the mounting plate (12) by a fixed support rod (35). The inside of the outer shell (32) is rotatably connected to a torsion spring adjusting plate (34). A buffer torsion spring (33) is fixedly connected to the side of the torsion spring adjusting plate (34) facing the transmission gear (31). Each sliding storage assembly includes a sliding receiving cavity (20) and two guide grooves (21). The sliding receiving cavity (20) is located inside the mounting plate (12), and the two guide grooves (21) are located outside the mounting plate (12). A lifting sliding link (22) is slidably connected inside each guide groove (21). The lifting sliding link (22) is fixedly connected to the outside of the rice support platform (13). The end of each lifting sliding link (22) away from the rice support platform (13) is fixed. A sliding bearing seat (23) is connected to each sliding bearing seat (23). A transverse guide slide rod (24) is movably connected inside each sliding bearing seat (23) and the lifting sliding link (22). A spring limit seat (25) is fixedly connected to the end of each transverse guide slide rod (24) away from the lifting sliding link (22). A transverse reset spring (26) is provided on the side of each spring limit seat (25) facing the sliding bearing seat (23). A lifting linkage plate (28) is fixedly connected to the side of the two spring limit seats (25) facing each other. Each receiving slot (14) has several drag-reducing balls (15) rotatably embedded in its inner wall. The rack guide groove (50) is opened on the side of the mounting plate (12) away from the rice support platform (13). The rack connecting slider (51) is slidably connected inside the rack guide groove (50). The rack connecting slider (51) is fixedly connected to the outside of the lifting linkage plate (28). The lifting transmission rack (52) is fixedly connected to the side of the rack connecting slider (51) away from the lifting linkage plate (28). The inside of the rack guide groove (50) is fixedly connected to the slider guide rod (53). The rack connecting slider (51) is movably sleeved on the outside of the slider guide rod (53). The torsion spring adjusting disc (34) is fixedly connected to the outside of the preload adjusting disc (36), and the outer shell (32) is fixedly connected to the outside of the locking tooth disc (37). The locking tooth disc (37) has several locking tooth grooves (38) on its outside. The locking tooth grooves (38) are evenly arranged in a ring around the circumference of the locking tooth disc (37). Two tooth groove blocks (39) are fixedly connected inside each locking tooth groove (38), and a gap is reserved between the two tooth groove blocks (39).

2. The conveying device for rice processing according to claim 1, characterized in that, The two sliding bearing seats (23) are fixedly connected to a synchronous connecting horizontal plate (27) on the opposite side, and the lifting linkage plate (28) is fixedly connected to a lower limit stop (29).

3. The conveying device for rice processing according to claim 2, characterized in that, The rice support platform (13), the lifting sliding connecting rod (22) and the sliding bearing seat (23) have a limiting cavity (211) inside. The end of the transverse guide slide rod (24) away from the spring limiting seat (25) moves through the sliding bearing seat (23) and extends into the limiting cavity (211). The end of the transverse guide slide rod (24) away from the spring limiting seat (25) is fixedly connected to the limiting ring plate (210), and the limiting ring plate (210) is movably connected inside the limiting cavity (211).

4. The conveying device for rice processing according to claim 1, characterized in that, The pre-tightening adjustment turntable (36) is provided with a stop assembly on its outer side for positioning and locking its rotation. The stop assembly includes a pawl mount (40), which is fixedly connected to the outside of the preload adjustment turntable (36). A pawl shaft (42) is rotatably connected inside the pawl mount (40), and a locking pawl (41) is fixedly connected to the outside of the pawl shaft (42). The locking pawl (41) rotates inside the pawl mount (40) via the pawl shaft (42).

5. A conveying device for rice processing according to claim 4, characterized in that, The locking pawl (41) has a locking pin receiving groove (43) on both sides of its exterior. A locking pin baffle (44) is movably connected inside the locking pin receiving groove (43). Two locking pin return springs (45) are fixedly connected to the outside of the locking pin baffle (44). The end of the locking pin return spring (45) away from the locking pin baffle (44) is fixedly connected to the inner wall of the locking pin receiving groove (43). An anti-disengagement locking pin (46) is fixedly connected to the end of the locking pin baffle (44) away from the locking pin return spring (45).

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