Nondestructive lifting device for corn processing production line

Abstract

The application discloses a nondestructive lifting device applied to the field of agricultural elevators and used for a corn processing production line, and the nondestructive lifting device changes the discharging mode of the corn from throwing to directly pouring, greatly reduces the collision force between the corn and the discharge port when the corn is discharged, effectively reduces the falling amount of the corn at a high place caused by insufficient throwing force, and greatly reduces the corn loss rate. In addition, compared with the prior art, the nondestructive lifting device does not need to consider the damage to the corn caused by the throwing mode, and appropriately accelerates the rotating speed of the driving roller to accelerate the vertical lifting and transferring speed of the corn. Through the setting of the material plate monitoring unit, the deformation amplitude of the material plate can be monitored in real time after the deformation of the material plate is found, relevant processing measures can be taken in time before the material plate contacts the transmission belt, and thus the transmission belt is effectively protected and is not prone to being damaged due to friction.

Description

Technical Field

[0001] This invention relates to the field of agricultural lifting machines, and in particular to a non-destructive lifting device for a corn processing production line. Background Technology

[0002] Bucket elevators are continuous conveying machines that use a series of buckets uniformly fixed to an endless traction component to vertically lift materials. Bucket elevators use a series of buckets fixed to a traction chain or belt to transport bulk materials upward in a vertical or near-vertical direction.

[0003] For corn kernels intended for seed production, the integrity of the kernels is extremely important. However, corn kernels are large and heavy. When the bucket digs from the bottom and throws them from the top, the impact force between the kernels and the machine casing is stronger, causing the germ to fall off, the kernels to crack or even break, resulting in damage and seriously affecting the germination rate when planting later. For example, Chinese patent CN221499431U discloses a corn processing elevator, and Chinese patent CN214609737U discloses a non-crushing bucket elevator for corn conveying.

[0004] Currently, the common practice to solve this problem is to reduce the transfer speed so that the impact force when the corn kernels are thrown from a height is not too large, thereby reducing the damage rate of the corn kernels. However, a space needs to be set between the throwing point and the discharge port for the hopper to pass through. Moreover, the corn kernels are relatively large. If the transfer speed is too low, the corn kernels are difficult to be completely thrown into the discharge port, causing some corn kernels to fall directly to the bottom of the elevator. Due to their own weight and the large impact force of acceleration, the breakage rate of these corn kernels is very high. On the other hand, if the transfer speed is too high, it is inevitable that there will be a large impact with the discharge port, resulting in a certain amount of loss. Summary of the Invention

[0005] The core of this invention lies in building a receiving channel that undulates with the movement of the bucket between the discharge port and the conveyor belt, thereby changing the material throwing method to direct dumping, thus solving the loss caused by material throwing in the prior art.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A non-destructive lifting device for a corn processing production line includes an outer casing. An inlet and an outlet are fixedly connected to the lower right and upper left ends of the outer casing, respectively. A lifting assembly is provided inside the outer casing. The lifting assembly includes a drive roller and a driven roller rotatably connected to the top and bottom of the outer casing, a transmission belt sleeved on the outer ends of the drive roller and the driven roller, a plurality of buckets uniformly fixedly connected to the outer ends of the transmission belt, and a receiving channel installed inside the outer casing. A drive motor is also fixedly installed at the outer end of the outer casing. The output shaft of the drive motor movably passes through the outer casing and is fixedly connected to the rotation shaft of the drive roller. The receiving channel is located at the connection between the discharge port and the equipment shell. The receiving channel includes a receiving plate connected between the front and rear inner walls of the equipment shell via an electric rotating shaft, two electric push rods respectively installed between the front and rear ends of the receiving plate and the inner wall of the equipment shell, and a positioning strip connected to the upper end of the side of the discharge port near the inlet. The positioning strip is located below the receiving plate. The outer end of the equipment casing is equipped with a controller and an alarm. The electric rotating shaft of the receiving plate is also equipped with a timer and a counter. The timer, counter, and electric push rod are all connected to the controller signal.

[0008] Furthermore, the receiving plate has side plates fixedly connected to both the front and rear edges of the end away from the discharge port, and the width of this end is greater than the width of the bucket opening. The width of the end of the receiving plate near the discharge port is consistent with the distance between the front and rear inner walls of the equipment casing.

[0009] Furthermore, the positioning strip includes a support strip and a buffer layer laid on the inclined surface of the support strip. A pressure sensor is fixedly installed in the middle of the inclined surface of the support strip, and the pressure sensor is connected to the controller signal.

[0010] Furthermore, the positioning strip has a trapezoidal cross-section, with the inclined surface of the trapezoid located on the upper side and inclined downward in the direction away from the drive roller. When the receiving plate abuts against the positioning strip, the edge of the receiving plate away from the discharge port is close to but does not contact the outer surface of the transmission belt, and the gap between the two is no more than 5mm.

[0011] Optionally, an extended side plate is fixedly connected to the end of the positioning bar away from the discharge port. The distance between the extended side plate and the transmission belt is greater than the lateral span of the bucket. A material plate monitoring unit is provided on the extended side plate.

[0012] Furthermore, the material plate monitoring unit includes multiple contact sensing strips that are uniformly and fixedly connected to the upper end of the extension side plate. The number of contact sensing strips is odd, and the middle contact sensing strip is the lowest. The height of the remaining contact sensing strips gradually decreases from both sides to the middle.

[0013] Furthermore, the contact sensing strip includes a sensing segment at the top and a pressing segment at the bottom of the sensing segment. The pressing segment and the sensing segment are fixedly connected to each other. The sensing segment is a rigid structure with a hemispherical top, and the pressing segment is made of elastic material. A receiving groove is carved at the bottom of the pressing segment. A pressure sensor two is installed at the upper end of the outer side plate. The pressure sensor two is located inside the receiving groove and is connected to the controller signal.

[0014] Optionally, only the two highest contact sensing strips and the lowest middle contact sensing strip are equipped with pressure sensor 2, while the remaining contact sensing strips are not equipped with pressure sensor 2.

[0015] Optionally, each of the multiple contact sensing strips may be equipped with a pressure sensor.

[0016] Compared with the prior art, the advantages of this invention are: (1) This solution changes the material throwing method to direct dumping by building a receiving channel that undulates with the movement of the bucket between the discharge port and the conveyor belt, thereby solving the loss caused by throwing in the prior art.

[0017] (2) By setting up the material plate monitoring unit, the material assembly can be monitored, which can effectively reduce the excessive friction force on the transmission belt caused by the deformation of the corn due to gravity. Compared with the existing technology, the collision force between the corn kernels and the discharge port is greatly reduced. At the same time, the amount of corn kernels falling from a height due to insufficient throwing force is greatly reduced, thereby greatly reducing the corn loss rate. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a cross-sectional view of a portion of the present invention; Figure 3 This is a cross-sectional view of the top portion of the present invention; Figure 4 This is a perspective view of the top portion of the invention from another angle; Figure 5 for Figure 4 A schematic diagram at point A in the middle; Figure 6 This is a perspective view of the material receiving channel of the present invention when it is raised; Figure 7 This is a schematic diagram showing the undulating material receiving channel of the present invention as the bucket moves; Figure 8 This is a partial cross-sectional view of the rotating point of the receiving channel in this invention; Figure 9 This is a schematic diagram illustrating the principle of the abnormal alarm for the material receiving channel in this invention; Figure 10 This is a partial cross-sectional view of the material receiving channel rotation point in the second embodiment of the present invention; Figure 11 This is a perspective view of the material plate monitoring unit of the present invention; Figure 12 This is a front view of the material plate monitoring unit of the present invention; Figure 13 This is a cross-sectional schematic diagram of the contact sensing strip of the present invention.

[0019] Explanation of the labels in the diagram: 1 Equipment casing, 11 Inlet, 12 Outlet, 2 Drive motor, 21 Drive roller, 22 Driven roller, 23 Transmission belt, 24 Bucket, 3 Receiving assembly, 31 Receiving plate, 32 Positioning strip, 33 Extended side plate, 321 Bearing strip, 322 Buffer layer, 301 Pressure sensor one, 4 Electric push rod, 5 Contact sensing strip, 51 Pressing section, 52 Sensing section, 501 Pressure sensor two. Detailed Implementation

[0020] The technical solutions will now be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention.

[0021] First implementation method: like Figures 1-3 A non-destructive lifting device for a corn processing production line includes a housing 1. A feed inlet 11 and a discharge outlet 12 are fixedly connected to the lower right and upper left ends of the housing 1, respectively. A lifting assembly is installed inside the housing 1. The lifting assembly includes a drive roller 21 and a driven roller 22 rotatably connected to the top and bottom of the housing 1, a transmission belt 23 sleeved on the outer ends of the drive roller 21 and driven roller 22, multiple buckets 24 uniformly fixedly connected to the outer ends of the transmission belt 23, and a receiving channel installed inside the housing 1. A drive motor 2 is also fixedly installed on the outer end of the housing 1. The output shaft of the drive motor 2 movably passes through the housing 1 and is fixedly connected to the rotation shaft of the drive roller 21. The drive motor 2 can directly drive the drive roller 21 to rotate, thereby driving the transmission belt 23 to rotate around the drive roller 21 and driven roller 22. This lifts the corn kernels dug up by the buckets 24 from the bottom of the housing 1 to the top, and finally discharges them from the discharge outlet 12.

[0022] like Figures 3-5 The receiving channel is located at the connection between the discharge port 12 and the equipment housing 1. The receiving channel includes a receiving plate 31 connected between the front and rear inner walls of the equipment housing 1 via an electric rotating shaft, two electric push rods 4 respectively installed between the front and rear ends of the receiving plate 31 and the inner wall of the equipment housing 1, and a positioning strip 32 connected to the upper end of the discharge port 12 near the inlet 11. The positioning strip 32 is located below the receiving plate 31. Figure 8The positioning strip 32 includes a bearing strip 321 and a buffer layer 322 laid on the inclined surface of the bearing strip 321. A pressure sensor 301 is fixedly installed in the middle of the inclined surface of the bearing strip 321. The pressure sensor 301 is connected to the controller signal. The positioning strip 32 has a trapezoidal cross-section, and the inclined surface of the trapezoid is located on the upper side and inclined downward in the direction away from the drive roller 21. When the receiving plate 31 abuts against the positioning strip 32, the edge of the receiving plate 31 away from the discharge port 12 is close to but does not contact the outer surface of the transmission belt 23, and the gap between the two is no more than 5mm. This effectively ensures that the corn kernels are not easy to leak from the gap between the two and fall to the bottom of the equipment shell 1. At the same time, it also makes it difficult for friction to be generated between the receiving plate 31 and the transmission belt 23. Thus, the receiving channel added in this solution is not likely to affect the normal lifting and conveying of corn kernels by the transmission belt 23. It also protects the transmission belt 23 so that it is not easy to be worn due to contact with the receiving plate 31. The receiving plate 31 is fixedly connected to the front and rear edges of the end away from the discharge port 12, and the width of this end is greater than the width of the opening of the hopper 24. The width of the end of the receiving plate 31 near the discharge port 12 is consistent with the distance between the front and rear inner walls of the equipment shell 1, which effectively ensures that the corn kernels poured onto the receiving plate 31 are not easy to slip off its edge, and thus effectively ensures that most of the corn kernels can smoothly enter the discharge port 12 for discharge.

[0023] The two ends of the electric push rod 4 are rotatably connected to the inner wall of the equipment housing 1 and the outer end of the side plate, respectively, so that the receiving plate 31 can rotate stably at the electric shaft.

[0024] like Figure 9 The outer casing 1 of the equipment is equipped with a controller and an alarm. The electric shaft of the receiving plate 31 is also equipped with a timer and a counter. The timer, counter and electric push rod 4 are all connected to the controller. When the receiving plate 31 rotates to the position (i.e., when it contacts the positioning bar 32 and the pressure sensor 301 generates obvious force data), the timer starts timing. The controller controls the receiving plate 31 to rotate and lift again at the preset timing node. After lifting, the timer is reset to zero and timing starts again. Then, according to the preset time node, it is controlled to rotate towards the transmission belt 23 until the pressure sensor 301 is triggered again. The counter counts each rotation. If the counter count does not increase as expected, or the data when the timer is reset is obviously too large (timeout), or the pressure sensor 301 is continuously subjected to force, it indicates that the rotation of the receiving plate 31 may be abnormal. At this time, the alarm can be triggered. At the same time, the controller can directly control the machine to stop, so that the staff can perform relevant maintenance in time and the setting of the receiving channel will not easily affect the stable lifting of corn kernels.

[0025] It is worth noting that, in specific implementation, the time interval of the undulation of the receiving component 3 is set in the controller according to the moving speed of the transmission belt 23, so as to ensure that the receiving plate 31 can undulate in a staggered manner from the hopper 24, so that the receiving plate 31 and the hopper 24 do not affect each other, and the corn kernels can fall stably to the discharge port 12 with a low breakage rate.

[0026] like Figures 6-7 In use, the controller controls the receiving plate 31 to rotate until it contacts the positioning strip 32. At this time, the hopper 24 closest to the receiving assembly 3 gradually approaches the receiving assembly 3. When the hopper 24 crosses the middle of the drive roller 21, the corn kernels inside quickly fall onto the receiving plate 31 under the action of gravity. As it continues to approach the receiving assembly 3, the controller controls the receiving plate 31 to rotate, raising it so that the hopper 24 can smoothly pass through the space between the receiving plate 31 and the transmission belt 23. After it crosses the space, the controller again controls the receiving plate 31 to rotate toward the transmission belt 23, preparing to receive the next hopper. In this process, the corn kernels in the bucket 24 are handled by a material receiving channel that undulates with the movement of the bucket 4 between the discharge port 12 and the conveyor belt 23. This changes the throwing and unloading method to direct pouring, which greatly reduces the collision force between the corn kernels and the discharge port 12 when they are unloaded. It also effectively reduces the amount of corn kernels falling from a height due to insufficient throwing force, thereby greatly reducing the corn loss rate. In addition, compared with the existing technology, there is no need to consider the damage to the corn kernels caused by the throwing method, and the rotation speed of the active roller 21 can be appropriately increased to speed up the vertical lifting and transfer of the corn kernels.

[0027] Second implementation method: Although the positioning strip 32 limits the rotation of the receiving plate 31, preventing it from rotating excessively and contacting the transmission belt 23, the lateral span of the positioning strip 32 is relatively small to ensure the stable transport of the bucket 24 with the transmission belt 23. This results in stress concentration at the contact point between the receiving plate 31 and the positioning strip 32. Prolonged pressure from the weight of the corn kernels can cause the edge of the contact point between the receiving plate 31 and the positioning strip 32 to deform easily, leading to contact between the receiving plate 31 and the transmission belt 23, causing wear on the transmission belt 23 and affecting its service life. Therefore, based on this problem, this embodiment further improves the positioning strip 32, while the rest remains the same as in the first embodiment.

[0028] like Figures 10-12 An extended side plate 33 is fixedly connected to the end of the positioning strip 32 furthest from the discharge port 12. The distance between the extended side plate 33 and the transmission belt 23 is greater than the lateral span of the bucket 24, so that the setting of the extended side plate 33 does not easily affect the normal movement of the bucket 24 with the transmission belt 23. Figures 11-12A material plate monitoring unit is provided on the outer side plate 33. The material plate monitoring unit includes multiple contact sensing strips 5 that are uniformly fixedly connected to the upper end of the outer side plate 33. The number of contact sensing strips 5 is odd, and the middle contact sensing strip 5 is the lowest. The height of the other contact sensing strips 5 gradually decreases from both sides to the middle. By setting multiple contact sensing strips 5 with different heights, the gradient monitoring of the edge deformation at the contact point between the receiving plate 31 and the positioning strip 32 can be realized. This effectively reduces the problem of the receiving plate 31 contacting the transmission belt 23 due to deformation but not being detected in time, thus achieving the effect of protecting the transmission belt 23 and effectively maintaining the stable lifting and conveying of corn kernels by the bucket 24.

[0029] like Figure 13 The contact sensing strip 5 includes a sensing segment 52 located at the top and a pressing segment 51 located at the bottom of the sensing segment 52. The pressing segment 51 and the sensing segment 52 are fixedly connected to each other. The sensing segment 52 is a rigid structure with a hemispherical top. The pressing segment 51 is made of elastic material. A receiving groove is carved at the bottom of the pressing segment 51. A pressure sensor 501 is installed on the upper end of the outer side plate 33. The pressure sensor 501 is located inside the receiving groove and is connected to the controller signal. Only the two highest contact sensing strips 5 and the lowest middle contact sensing strip 5 are equipped with pressure sensors 501. The other contact sensing strips 5 are not equipped with pressure sensors 501.

[0030] The height of the pressing section 51 does not exceed 1 / 4 of the height of the sensing section 52, which reduces the impact of the excessive height of the elastic pressing section 51 on the overall stability of the contact sensing strip 5, thereby making the data change of the pressure sensor 501 more accurately reflect the deformation amplitude of 31.

[0031] When the receiving plate 31 is not deformed, the highest contact sensing strip 5 only contacts the receiving plate 31 but is not subjected to the squeezing force of the receiving plate 31. When the edge of the receiving plate 31 at the contact point with the positioning strip 32 deforms, the uppermost contact sensing strip 5 will deform first, thereby triggering the corresponding pressure sensor 501 to generate force data. At this time, the staff can judge the deformation of the receiving plate 31 based on the data and perform relevant maintenance operations. If maintenance is not performed in time, the deformation will become larger and larger as the usage time increases, causing multiple contact sensing strips 5 to be gradually squeezed. When the lowest middle contact sensing strip 5 is also squeezed, the corresponding pressure sensor 501 is triggered, indicating that the deformation is relatively large. At this time, after receiving the data information from the pressure sensor 501, the controller directly triggers the alarm, allowing the staff to take appropriate measures in time. The larger the data of the pressure sensor 501 corresponding to the lowest middle contact sensing strip 5, the larger the deformation of the receiving plate 31.

[0032] It is worth noting that multiple contact sensing strips 5 can also be equipped with pressure sensors 2 501. When the pressure sensor 2 501 corresponding to the highest contact sensing strip 5 is triggered (indicating the start of deformation), before the pressure sensor 2 501 corresponding to the lowest contact sensing strip 5 is triggered, as the deformation amplitude increases, the multiple contact sensing strips 5 with height gradients are gradually triggered from both sides to the middle. Therefore, the staff can intuitively judge the deformation amplitude based on the number of pressure sensors 2 501 that are triggered, which facilitates timely response measures.

[0033] In practical implementation, the arrangement of pressure sensor 2501 can be selected according to actual needs.

[0034] By setting up the material plate monitoring unit, the receiving assembly 3 can be monitored. It can detect the deformation of the receiving plate 31 as soon as it is detected, and monitor the deformation range in real time after the deformation is detected. This allows for timely handling measures before the material plate 31 deforms and comes into contact with the transmission belt 23, effectively reducing the friction force on the transmission belt 23 caused by the deformation. This effectively protects the transmission belt 23 from damage and ensures the continuous and stable lifting and transmission of corn kernels.

[0035] The above description is merely a preferred embodiment of the present invention; it encompasses all the protection scope of the present invention. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solutions and improved concepts of the present invention, should be covered within the protection scope of the present invention.

Claims

1. A nondestructive lifting device for a corn processing production line, comprising a device shell (1), the lower right end and the upper left end of the device shell (1) are fixedly connected with a feeding port (11) and a discharging port (12) respectively, and a lifting assembly is arranged in the device shell (1), characterized in that: The lifting assembly includes an active roller (21) and a driven roller (22) that are rotatably connected to the top and bottom of the equipment housing (1), a transmission belt (23) sleeved on the outer ends of the active roller (21) and the driven roller (22), a plurality of buckets (24) uniformly fixedly connected to the outer ends of the transmission belt (23), and a material receiving channel installed inside the equipment housing (1). A drive motor (2) is also fixedly installed on the outer end of the equipment housing (1). The output shaft of the drive motor (2) movably passes through the equipment housing (1) and is fixedly connected to the rotation shaft of the active roller (21). The receiving channel is located at the connection between the discharge port (12) and the equipment shell (1). The receiving channel includes a receiving plate (31) connected between the front and rear inner walls of the equipment shell (1) via an electric rotating shaft, two electric push rods (4) respectively installed between the front and rear ends of the receiving plate (31) and the inner wall of the equipment shell (1), and a positioning strip (32) connected to the upper end of the side of the discharge port (12) near the inlet (11). The positioning strip (32) is located below the receiving plate (31). The outer end of the equipment housing (1) is equipped with a controller and an alarm. The electric shaft of the receiving plate (31) is also equipped with a timer and a counter. The timer, the counter and the electric push rod (4) are all connected to the controller signal. The end of the positioning strip (32) away from the discharge port (12) is fixedly connected to an extended side plate (33). The distance between the extended side plate (33) and the transmission belt (23) is greater than the lateral span of the bucket (24). A material plate monitoring unit is provided on the extended side plate (33). The material plate monitoring unit includes multiple contact sensing strips (5) uniformly fixedly connected to the upper end of the extended side plate (33). The number of contact sensing strips (5) is odd, and the middle contact sensing strip (5) is the lowest. The height of the remaining contact sensing strips (5) gradually decreases from both sides to the middle. The contact sensing strip (5) includes a sensing section (52) located at the top and a pressing section (51) located at the bottom of the sensing section (52). The pressing section (51) and the sensing section (52) are fixedly connected to each other. The sensing section (52) is a rigid structure with a hemispherical top. The pressing section (51) is made of elastic material. A receiving groove is carved at the bottom of the pressing section (51). A pressure sensor (501) is installed on the upper end of the extended side plate (33). The pressure sensor (501) is located inside the receiving groove. The pressure sensor (501) is connected to the controller signal.

2. A non-damaging lifting device for a corn processing production line according to claim 1, characterized in that: The receiving plate (31) has side plates fixedly connected to the front and rear edges of the end away from the discharge port (12), and the width of this end is greater than the width of the opening of the hopper (24). The width of the end of the receiving plate (31) near the discharge port (12) is consistent with the distance between the front and rear inner walls of the equipment shell (1).

3. The non-damaging lifting device for a corn processing production line according to claim 1, characterized in that: The positioning bar (32) includes a support bar (321) and a buffer layer (322) laid on the inclined surface of the support bar (321). A pressure sensor (301) is fixedly installed in the middle of the inclined surface of the support bar (321), and the pressure sensor (301) is connected to the controller signal.

4. A non-damaging lifting device for a corn processing production line according to claim 3, characterized in that: The positioning strip (32) has a trapezoidal cross section, and the inclined surface of the trapezoid is located on the upper side and inclined downward in the direction away from the drive roller (21). When the receiving plate (31) abuts against the positioning strip (32), the edge of the receiving plate (31) away from the discharge port (12) is close to but does not contact the outer surface of the transmission belt (23), and the gap between the two is no more than 5mm.

5. The non-destructive lifting device for a corn processing production line according to claim 1, characterized in that: Pressure sensor 2 (501) is set on only the two highest contact sensing strips (5) and the lowest middle contact sensing strip (5), and pressure sensor 2 (501) is not set on the other contact sensing strips (5).

6. The non-destructive lifting device for a corn processing production line according to claim 1, characterized in that: Each of the multiple contact sensing strips (5) is equipped with a pressure sensor (501).

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