Spiral wheat transportation equipment

Abstract

The invention relates to the technical field of spiral conveyors, in particular to spiral wheat conveying equipment which comprises a vertical barrel, a first screw, a second screw, an inclined barrel, a sleeve and a gathering device. The first screw is rotationally connected into the vertical barrel, a universal joint is fixedly connected to the bottom of the first screw, the second screw is fixedly connected to the tail end of the universal joint, and the inclined barrel is rotationally connected to the outside of the second screw; according to the ship unloader, the problems that when the ship unloader unloads, due to the fact that a ship body shakes, the feeding port is far away from a deck, wheat at the bottom cannot be collected through the feeding port, unloading is not thorough, and the unloading efficiency is low are solved; the inclined cylinder is additionally installed through the universal joint, the inclined cylinder has a certain rotation range and is always located on the deck when the ship body shakes, when the sleeve moves upwards relative to the inclined cylinder, materials accumulated nearby can be gathered to the inclined cylinder through the gathering device, and wheat in a cabin can be safely and efficiently transported without frequently using a forklift.

Description

Technical Field

[0001] This invention relates to the field of spiral conveyor technology, specifically a spiral wheat transport device. Background Technology

[0002] Common spiral wheat transport equipment includes spiral conveyors. The main working principle of a spiral conveyor is to use the rotation of spiral blades to push the granular material forward along the conveying pipe. When the screw rotates, the granular material is pushed into the conveying pipe by the thrust of the spiral blades and transported along the length of the pipe. This not only has high transport efficiency, but also reduces the cost required to transport wheat.

[0003] At various docks, the most common equipment for unloading wheat is the ship unloader. Using a ship unloader greatly improves unloading efficiency, minimizes dust pollution, maintains environmental cleanliness, and is highly efficient and environmentally friendly. Most existing wheat ship unloaders connect a screw conveyor to the bottom of a tower crane to unload the wheat. During unloading at the dock, due to the influence of seawater, the ship itself will constantly sway up and down. To prevent the bottom of the screw conveyor from making hard contact with the ship during this swaying, which could damage the ship, screw conveyor, and tower crane, a large safety distance must be maintained between the bottom of the screw conveyor and the ship during unloading. This safety distance needs to be adjusted according to the dock's operating conditions. As wind speed increases, the distance between the bottom of the screw conveyor and the ship's hull becomes too large, making it impossible to fully unload the wheat from the hold. The most common solution is to transport a forklift into the hold and use it to pile the wheat from the bottom of the hold onto the conveyor's area and height before unloading it. This method is not only cumbersome, inefficient, time-consuming, and labor-intensive, but also prone to accidents due to the forklift operating while the ship is swaying. To date, this problem remains unresolved.

[0004] Therefore, there is an urgent need to develop a spiral wheat transport device that can be mounted on the bottom of a tower crane and can safely and efficiently transport wheat in the hold of a ship. Summary of the Invention

[0005] The purpose of this invention is to provide a spiral wheat transport device to solve the problems of low transport efficiency and poor safety of granular materials such as wheat in the hold when the ship's hull is rocking up and down. Specifically, by setting the spiral wheat transport device mounted on the bottom of the tower crane to be in the form of vertical cylinder, inclined cylinder and sleeve connected to each other, on the one hand, the transport efficiency can be improved by reducing the safety distance, and on the other hand, the use of forklifts can be reduced by setting up a gathering device, thereby further improving the efficiency and safety of wheat transport.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A spiral wheat transport device includes a vertical cylinder, a first screw, a second screw, an inclined cylinder, a sleeve, and a gathering device. The first screw is rotatably connected inside the vertical cylinder. A universal joint is fixedly connected to the bottom of the first screw, and the second screw is fixedly connected to the end of the universal joint. The parameters of the first and second screws are identical. The inclined cylinder is rotatably connected to the outside of the second screw, and its top is sealed to the vertical cylinder via a flexible metal hose to ensure that the inclined cylinder never detaches from the vertical cylinder. The universal joint allows power transmission between the two shafts to be non-linear. A sleeve is fitted around the outside of the inclined cylinder, the length of which is less than or equal to the length of the inclined cylinder. When the sleeve is only subjected to gravity, its bottom end falls to the bottom of the inclined cylinder. On the side, a gathering device is connected to the inclined cylinder. When the sleeve moves upward relative to the inclined cylinder, the gathering device gathers the material to the inclined cylinder. During use, the bottom ends of the inclined cylinder and the sleeve are in direct contact with the wheat. Therefore, the wheat in the hold can be fully transported without setting an excessively large safety distance. When the ship moves up and down, it will push the sleeve to move up and down relative to the inclined cylinder. Since the inclined cylinder can rotate and tilt relative to the vertical cylinder, it will not damage the ship, screw conveyor and tower crane equipment. Moreover, when the sleeve moves upward relative to the inclined cylinder, it will gather the nearby accumulated material to the inclined cylinder through the gathering device. The wheat in the hold can be transported safely and efficiently without the need for frequent use of forklifts.

[0008] Preferably, a groove is provided on the outer side of the inclined cylinder to restrict the movement direction of the slider and the slider plate. The distance between the left end groove and the surface of the inclined cylinder is smaller than the distance between the right end groove and the surface of the inclined cylinder. A long rack is fixedly installed at the bottom right end of the groove. A gathering device is slidably installed inside the leftmost side of the right end groove. The gathering device can pull wheat from a distance to a closer position to the inclined cylinder, which is more conducive to the transportation of wheat. The gathering device includes a slider plate, a transmission gear, a speed regulating gear, a push plate, and a drive assembly. The slider plate is slidably installed in the groove, and the slider plate is fixed. A support cylinder is installed, and a transmission gear and a speed regulating gear are rotatably connected to the slider plate. The transmission gear, speed regulating gear, and long rack all have the same module, and the transmission gear meshes with the speed regulating gear and the long rack respectively. A control rod is rotatably installed at an eccentric position on the side of the speed regulating gear. Two push plates are rotatably connected to the top side of the support cylinder, and a return spring is fixedly connected to the top of the two push plates. When the push plates are not subjected to internal thrust, the two push plates are in a closed state. Two L-shaped rods are rotatably connected to the end of the control rod, and the right-angle positions of the two L-shaped rods are rotatably connected to... On the inner wall of the support cylinder, the ends of the two L-shaped rods are rotatably connected to the top of the push plate. A drive assembly for moving the slider plate is connected to the sleeve. When the hull pushes the sleeve upward relative to the inclined cylinder, it drives the slider plate through the drive assembly. During the slider plate's movement, the long rack at the bottom meshes with and rotates with the transmission gear. The rotating gear drives the speed regulating gear to rotate. The part on the eccentric side of the speed regulating gear reciprocates with the rotation of the speed regulating gear. The reciprocating movement of the control lever drives the two L-shaped rods to rotate reciprocally, and causes the two push plates to open and close reciprocally. Regarding the setting of the L-shaped rods... The length of the end connected to the control rod is limited by the inner diameter of the support tube, which can be called the short end. Since the right-angle position of the L-shaped rod is rotatably connected to the inner wall of the support tube, and the ends of the two L-shaped rods are rotatably connected to the tops of the two push plates respectively, a lever-like structure is formed. In order to prevent the two push plates from not being able to open after being inserted into the wheat pile, the length of the end of the L-shaped rod connected to the push plate should be as close as possible to the short end. During the reciprocating opening and closing of the push plates, the wheat that is far away from the tilting tube is moved to a position closer to the tilting tube, reducing the time required for unloading and improving unloading efficiency.

[0009] Preferably, the driving assembly includes a short rack, a bracket, a rotating shaft, a driving gear, a toothed plate, a rotating gear, a slider, a locking structure, and a connecting mechanism. The short rack is slidably connected to the left end of the slide groove, and the bracket is fixedly installed at the left end of the slide groove. A rotating shaft is rotatably connected to the bracket, and a driving gear meshing with the short rack is disposed in the middle of the rotating shaft. Sleeve grooves are formed on both sides of the sleeve, and toothed plates are disposed inside the sleeve grooves. Rotating gears are fixedly connected to both ends of the rotating shaft, and the rotating gears mesh with the toothed plates inside the sleeve grooves. A slider is fixedly connected to the end of the short rack. When the sleeve moves upward, the toothed plates simultaneously drive the rotating gears to move. At this time, the driving gear in the middle of the rotating shaft drives the short rack to move to the right, and the short rack drives the slider to move to the right. A support rod is rotatably connected to the slider, and the end of the support rod is rotatably connected to the side of the bracket cylinder. A locking mechanism is connected to the slider plate. When the slider contacts the slider plate, the locking mechanism releases the slider. The locking mechanism locks the slider plate in place within the groove when the slider is not in contact with the slider plate. A connecting mechanism is provided between the slider and the slider plate. When the slider pulls the slider plate to the end of the long rack near the rotating shaft through the connecting mechanism, the slider and the slider plate separate. When the slider pulls the slider plate, it first pulls the slider plate to the end of the long rack near the rotating shaft through the connecting mechanism, and then the slider and the slider plate separate again. When the slider is not in contact with the slider plate, the locking mechanism locks the slider plate in place within the groove. When the slider moves away from the slider plate, it causes the support cylinder to tilt and retract to be parallel to the tilting cylinder and the sleeve, thus facilitating movement and transportation. When the slider approaches the slider plate, it first supports the support cylinder to a vertical position. When the slider contacts the slider plate, the locking mechanism releases the lock on the slider plate. At this time, the vertically positioned support cylinder can be pushed to move the push plate, thus facilitating full contact between the push plate and the wheat and gathering the wheat, thereby further improving the wheat transportation efficiency.

[0010] When the support rod is fully retracted, it is parallel to the axis of the inclined cylinder and the sleeve. The connection position between the support rod and the support cylinder is the center of gravity position when the support cylinder is connected to the two closed push plates. The pushing point is located at the center of gravity position when the support cylinder is connected to the two closed push plates. On the one hand, this can reduce the resistance when pushing the inclined cylinder. On the other hand, it can ensure that the inclined cylinder, the sleeve and the push plates can rotate stably to the vertical state or retract into the side wall of the inclined cylinder and the sleeve.

[0011] Preferably, the locking mechanism includes a boss, a drive rack, a self-locking gear, an auxiliary spring, and a self-locking rod. The drive rack is slidably mounted on the slider plate and can move left and right along the slider plate's movement direction. The end of the drive rack is elastically connected to the slider plate via an auxiliary spring, the spring force of which is greater than the frictional force generated by the relative movement of the drive rack and the slider plate. A boss that cooperates with the slider is fixedly mounted on the side of the drive rack near the slider, and the diameter of the boss is smaller than the diameter of the corresponding hole on the slider plate. A fixed gear rod is fixedly connected in the middle of the slider plate, the length of which is less than half the height of the slider plate. The end of the fixed gear rod is rotatably connected to a self-locking rod that meshes with the drive rack. The locking gear has the same module and pressure angle as the driving rack and the self-locking gear. A self-locking rod is rotatably connected to the eccentric position of the self-locking gear. When the slider is not in contact with the slider plate, the self-locking rod is located in the self-locking hole in the side wall of the slide groove. When the slider contacts the slider plate, the boss is compressed, the driving rack moves to the right, the auxiliary spring absorbs energy, the self-locking gear meshing with the driving rack rotates and drives the self-locking rod to retract, disengaging from the self-locking hole in the side wall of the slide groove, thus releasing the self-locking state of the slider plate. When the slider plate returns to the starting position from right to left, the slider disengages from the slider plate, the auxiliary spring pushes the driving rack to the left, the self-locking gear meshing with the driving rack rotates, and drives the self-locking rod to open, restoring the self-locking state of the slider plate.

[0012] Preferably, a protector is fixedly connected to one end of the universal joint to prevent excessive torque required by the screw from exceeding the maximum torque the universal joint can withstand, thus causing damage to the universal joint. The protector includes a first protective disc and a second protective disc, both with the same diameter and thickness. The end of the universal joint is fixedly connected to the center of the first protective disc, and one end of the first protective disc and the second protective disc are slidably connected. The screw is fixedly connected to the other end of the second protective disc. A protective spring is fixedly connected to the first protective disc, and a ball bearing is fixedly connected to the end of each protective spring. The diameter of the protective spring is smaller than the diameter of the ball bearing. One end of the second protective disc is provided with... The universal joint is equipped with ball grooves that mate with the ball bearings, and the depth of the ball grooves is equal to half the diameter of the ball bearings. When the moisture content of the unloaded wheat is too high, the wheat will stick together and adhere to the screw and the inner wall of the inclined cylinder, which will increase the power required to transport the wheat. When the required power reaches the critical value of the protector, the ball bearings on the first protective disc will move towards the first protective disc under the squeezing action of the second protective disc. At this time, the ball bearings are completely pressed into the first protective disc, and the first and second protective discs lose their power connection. The power of the first screw cannot be transmitted to the second screw, which will cause the second screw to stop rotating. This prevents the universal joint from being damaged due to excessive torque and protects the universal joint.

[0013] Preferably, four rotating shaft brackets are fixedly installed on the inner wall of the inclined cylinder, limiting the rotation of the shaft to the axis restricted by the four rotating shaft brackets. The end of each rotating shaft bracket is provided with an arc surface that mates with the second screw. The rotating shaft can fit tightly with the arc surface, improving the stability of the shaft rotation. Each rotating shaft bracket is rotatably connected to the second screw. The four rotating shaft brackets are distributed along the axial direction, and none of the four rotating shaft brackets overlap in the direction perpendicular to the axial direction. During the operation of the second screw, the wheat is subjected to the resistance of at most one rotating shaft bracket during its ascent. Compared with the traditional bracket, which is subjected to the resistance of at most four rotating shaft brackets at the same time, this is more conducive to the transportation of wheat, prevents the possibility of wheat blockage, and further improves the efficiency of wheat transportation.

[0014] Preferably, the connecting mechanism includes a connector, an auxiliary spring, and a connecting block. Spring holes are provided on both sides of the slider, and connectors are rotatably mounted on both sides of the slider. An auxiliary spring is fixedly mounted in the middle of the connector, rotatably mounted within a spring hole, and its end is fixedly connected to the slider. The end of the connector is L-shaped. A connecting block that mates with the connector is fixedly connected to the side of the slider plate closest to the slider. The two ends of the slide groove are a wide end and a narrow end, respectively. When at the wide end, the connector and the connecting block are separated; when at the narrow end, the connector and the connecting block mate. When the slider is not in contact with the slider plate, the connector is engaged by the auxiliary spring. Under the action of the spring, the connector is located outside the slider. When the slider contacts the slider plate, the groove narrows, and the connector is squeezed by the inner wall of the groove to rotate inward and cooperate with the connecting block. The auxiliary spring absorbs energy. When the slider separates from the slider plate, the groove widens, and the auxiliary spring releases energy to push the connector to rotate outward and separate from the connecting block. The longer end of the L-shaped rod is rotatably connected to the slider, and the shorter end is used to connect with the connecting block. At this time, when the L-shaped rod contacts the side wall of the groove, it forms a force-saving lever. Thus, the friction between the L-shaped rod and the side wall of the groove can be used to push the L-shaped rod to contact the connecting block. The structure is simple and has good stability.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. This invention solves the problem of incomplete unloading and low unloading efficiency caused by the inlet not collecting wheat from the bottom when the ship's hull sways and the inlet moves away from the deck during unloading. By adding a tilting cylinder to the universal joint, the tilting cylinder has a certain range of rotation and remains on the deck when the ship sways. When the sleeve moves upward relative to the tilting cylinder, it gathers the nearby accumulated material to the tilting cylinder through a gathering device. Wheat in the ship's hold can be transported safely and efficiently without the need for frequent loader operations.

[0017] 2. By sliding a gathering device on the outside of the tilting cylinder, the force exerted by the deck on the sleeve when the ship is rocking is converted into the power of the reciprocating motion of the push plate through the gathering device. The reciprocating motion of the push plate can gather wheat that is far away from the tilting cylinder to a position close to the tilting cylinder. No additional machinery is needed to clean the deck, which reduces unloading costs. No new power source needs to be added to the gathering device, which reduces the overall complexity and improves the overall stability of the equipment, thereby improving the unloading efficiency of the unloading machine.

[0018] 3. A protector is fixedly connected to the end of the universal joint. When the moisture content of the wheat in the inclined cylinder is too high, the required power increases. When the required power exceeds the critical value of the protector, the balls on the first protector disc will be squeezed by the second protector disc, and the first and second protector discs will lose their power connection. This prevents the universal joint from being damaged due to excessive torque, improves the stability of the equipment, reduces maintenance and repair time, and further improves the efficiency of wheat transportation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 For the present invention Figure 1 Enlarged view of the structure of section A in the middle;

[0021] Figure 3 For the present invention Figure 1 Enlarged view of the structure of section B;

[0022] Figure 4 This is a schematic diagram of the slider part in this invention;

[0023] Figure 5 This is a structural schematic diagram of the slider plate section;

[0024] Figure 6 This is a structural diagram of the control lever and L-shaped lever section;

[0025] Figure 7 A structural diagram of the protection disk one;

[0026] Figure 8 A schematic diagram of the structure for protecting disk two;

[0027] Figure 9 This is a cross-sectional view of the inclined cylinder;

[0028] Figure 10 Here are structural schematic diagrams of screw one and screw two;

[0029] Figure 11 This is a schematic diagram of the sleeve structure.

[0030] In the diagram: 1. Vertical cylinder; 2. Screw 1; 3. Universal joint; 4. Protector; 5. Inclined cylinder; 6. Screw 2; 7. Support rod; 8. Long rack; 9. Gathering device; 91. Transmission gear; 92. Sliding plate; 93. Return spring; 94. Push plate; 95. Support cylinder; 96. Control rod; 97. Speed ​​regulating gear; 98. Drive rack; 99. Boss; 910. Self-locking gear; 911. Self-locking rod; 10. Slider; 11. Rotating shaft; 12. Rotating gear; 13. Auxiliary spring; 14. Connecting block; 15. Rotating shaft bracket; 16. Ball groove; 17. Second protective disc; 18. First protective disc; 19. Ball; 20. L-shaped rod; 21. Short rack; 22. Sleeve; 23. Sleeve groove; 24. Gear plate; 25. Bracket; 26. Slide groove; 27. Spring hole; 28. Connector; 29. ​​Drive gear. Detailed Implementation

[0031] The specific technical solutions included in the embodiments of the present invention will be described in a complete and clear manner in conjunction with the accompanying drawings. It is obvious that the described embodiments are only a part of the embodiments involved in the present invention, and do not include all embodiments.

[0032] Please see Figures 1 to 11 This invention provides a spiral wheat transport device, the technical solution of which is as follows:

[0033] Reference Figure 1 A spiral wheat transport device includes a vertical cylinder 1, a first screw 2, a second screw 6, an inclined cylinder 5, a sleeve 22, and a gathering device 9. The first screw 2 is rotatably connected inside the vertical cylinder 1. A universal joint 3 is fixedly connected to the bottom of the first screw 2. The second screw 6 is fixedly connected to the end of the universal joint 3. The parameters of the first screw 2 and the second screw 6 are the same. The inclined cylinder 5 is rotatably connected to the outside of the second screw 6. The top of the inclined cylinder 5 is sealed to the vertical cylinder 1 through a metal flexible hose to ensure that the inclined cylinder 5 never detaches from the vertical cylinder 1. The universal joint 3 can transmit power between two shafts even if they are not on the same straight line.

[0034] Reference Figure 9 and 10Four rotating shaft brackets 15 are fixedly installed on the inner wall of the inclined cylinder 5, which restricts the rotating shaft to rotate only within the axis limited by the four rotating shaft brackets 15. The end of the rotating shaft bracket 15 is provided with an arc surface that cooperates with the screw 6. The rotating shaft can be tightly fitted with the arc surface, which improves the stability of the rotating shaft. All rotating shaft brackets 15 are rotatably connected to the screw 6. The four rotating shaft brackets 15 are distributed along the axial direction, and none of the four rotating shaft brackets 15 overlap in the direction perpendicular to the axial direction. During the operation of the screw 6, the wheat is subjected to the resistance of at most one rotating shaft bracket 15 during the upward process. Compared with the traditional bracket, which is subjected to the resistance of at most four rotating shaft brackets 15 at the same time, it is more conducive to the transportation of wheat, prevents the possibility of wheat blockage, and thus improves the efficiency of wheat transportation.

[0035] A sleeve 22 is fitted on the outside of the inclined cylinder 5. The length of the sleeve 22 is less than or equal to the length of the inclined cylinder 5. When the sleeve 22 is only subjected to gravity, its bottom end falls to the lower side of the inclined cylinder 5. A gathering device 9 is connected to the inclined cylinder 5. When the sleeve 22 moves upward relative to the inclined cylinder 5, the gathering device 9 gathers the material to the inclined cylinder 5. In use, the bottom ends of the inclined cylinder 5 and the sleeve 22 are in direct contact with the wheat. Therefore, the wheat in the hold can be fully transported without setting an excessively large safety distance. When the ship sways up and down, it will push the sleeve 22 to move up and down relative to the inclined cylinder 5. Since the inclined cylinder 5 can rotate and tilt relative to the vertical cylinder 1, it will not damage the ship hull, screw conveyor and tower crane equipment. Moreover, when the sleeve 22 moves upward relative to the inclined cylinder 5, it will gather the nearby accumulated material to the inclined cylinder 5 through the gathering device 9. The wheat in the hold can be transported safely and efficiently without the need for frequent use of a forklift.

[0036] Reference Figure 1 , 23. A groove 26 is provided on the outer side of the inclined cylinder 5 to limit the movement direction of the slider 10 and the slider plate 92. The distance between the left end groove 26 and the surface of the inclined cylinder 5 is smaller than the distance between the right end groove 26 and the surface of the inclined cylinder 5. A long toothed rack 8 is fixedly installed at the bottom right end of the groove 26. A gathering device 9 is slidably installed on the leftmost inner side of the right end groove 26. The gathering device 9 can pull wheat from a distance to a close proximity to the inclined cylinder 5, which is more conducive to the transportation of wheat. The gathering device 9 includes a slider plate 92 and a transmission gear 91. The components include a speed regulating gear 97, a push plate 94, and a drive assembly. A slider plate 92 is slidably mounted within a slide groove 26. A support cylinder 95 is fixedly mounted on the slider plate 92. A transmission gear 91 and a speed regulating gear 97 are rotatably connected to the slider plate 92. The modules of the transmission gear 91, the speed regulating gear 97, and the long rack 8 are all equal. The transmission gear 91 meshes with both the speed regulating gear 97 and the long rack 8. A control rod 96 is rotatably mounted at an eccentric position on the side of the speed regulating gear 97. Two push plates 95 are rotatably connected to the top side of the support cylinder 95. 4. A return spring 93 is fixedly connected to the top of both push plates 94. When the push plates 94 are not subjected to internal thrust, both push plates 94 are in a closed state. Two L-shaped rods 20 are rotatably connected to the end of the control rod 96. The right-angle positions of the two L-shaped rods 20 are rotatably connected to the inner wall of the support cylinder 95. The ends of the two L-shaped rods 20 are rotatably connected to the top of the push plate 94. A drive assembly for moving the sliding block 92 is connected to the sleeve 22. When the hull pushes the sleeve 22 upward relative to the inclined cylinder 5, it will move through the drive assembly. The slider plate 92 is driven to move. When the slider plate 92 moves, the long rack 8 at the bottom meshes with the transmission gear 91 and rotates. The rotating gear 12 drives the speed regulating gear 97 to rotate. The eccentric position on the side of the speed regulating gear 97 reciprocates with the rotation of the speed regulating gear 97. The reciprocating movement of the control lever 96 will drive the two L-shaped rods 20 to rotate reciprocally and drive the two push plates 94 to open and close reciprocally, driving the wheat that is far away from the tilting cylinder 5 to move closer to the tilting cylinder 5, reducing the time required for unloading and improving unloading efficiency.

[0037] Reference Figure 2 , 34, 5, and 11, the drive assembly includes a short rack 21, a bracket 25, a rotating shaft 11, a drive gear 29, a toothed plate 24, a rotating gear 12, a slider 10, a locking structure, and a connecting mechanism. The short rack 21 is slidably connected to the left end of the slide groove 26, and the bracket 25 is fixedly installed at the left end of the slide groove 26. The rotating shaft 11 is rotatably connected to the bracket 25. A drive gear 29 that meshes with the short rack 21 is located in the middle of the rotating shaft 11. Sleeve grooves 23 are opened on both sides of the sleeve 22, and a toothed plate 24 is installed inside the sleeve grooves 23. Rotating gears 12 are fixedly connected to both ends of the rotating shaft 11, and the rotating gears 12 mesh with the toothed plates 24 inside the sleeve grooves 23. A slider 10 is fixedly connected to the end of the short rack 21. When the sleeve 22 moves upward, the toothed plate 24 simultaneously drives the rotating gear 12 to move. At this time, the drive gear 29 in the middle of the rotating shaft 11... The short rack 21 moves to the right, which drives the slider 10 to move to the right. A locking mechanism is connected to the slider plate 92. When the slider 10 is not in contact with the slider plate 92, the locking mechanism locks the slider plate 92 in the groove 26. A support rod 7 is rotatably connected to the slider 10. The end of the support rod 7 is rotatably connected to the side of the support cylinder 95. When the support rod 7 is fully retracted, it is parallel to the axis of the inclined cylinder 5 and the sleeve 22. The connection position of the support rod 7 and the support cylinder 95 is the center of gravity position when the support cylinder 95 is connected to the two closed push plates 94. The pushing point is located at the center of gravity position when the support cylinder 95 is connected to the two closed push plates 94. On the one hand, it can reduce the resistance when pushing the inclined cylinder 5. On the other hand, it can ensure that the inclined cylinder 5, the sleeve 22 and the push plate 94 can rotate stably to the vertical state or retract into the side wall of the inclined cylinder 5 and the sleeve 22.

[0038] When the slider 10 approaches the slider plate 92, it will first support the support cylinder 95 to a vertical position. When the slider 10 contacts the slider plate 92, the locking mechanism will release the lock on the slider plate 92. At this time, the slider 10 can push the slider plate 92 and the vertical support cylinder 95 to drive the push plate 94 to move, so that the push plate 94 can fully contact the wheat and gather the wheat, thereby further improving the wheat transportation efficiency. A connecting mechanism is provided between the slider 10 and the slider plate 92. When the slider 10 pulls the slider plate 92 to one end of the long rack 8 near the rotating shaft 11 through the connecting mechanism, the slider 10 and the slider plate 92 will separate from each other.

[0039] Reference Figure 2 , 34, 5, and 6. The locking mechanism includes a boss 99, a drive rack 98, a self-locking gear 910, an auxiliary spring 13, and a self-locking rod 911. A drive rack 98 is slidably mounted on the slider plate 92, and the drive rack 98 can move left and right along the direction of movement of the slider plate 92. The end of the drive rack 98 is elastically connected to the slider plate 92 via the auxiliary spring 13. The spring force is greater than the frictional force generated by the relative movement of the drive rack 98 and the slider plate 92. A boss 99 that cooperates with the slider 10 is fixedly mounted on the side of the drive rack 98 near the slider 10, and the diameter of the boss 99 is smaller than the diameter of the corresponding hole on the slider plate 92. A fixed gear rod is fixedly connected in the middle of the slider plate 92. The length of the gear rod is less than half the height of the slider plate 92. The end of the fixed gear rod is rotatably connected to a self-locking gear 910 that meshes with the drive rack 98. The module and pressure angle of the self-locking gear 98 and the self-locking gear 910 are the same. The self-locking gear 910 is rotatably connected to the self-locking rod 911 at the eccentric position. When the slider 10 is not in contact with the slider plate 92, the self-locking rod 911 is located in the self-locking hole in the side wall of the slide groove 26. When the slider 10 is in contact with the slider plate 92, the boss 99 is compressed, the drive rack 98 moves to the right, the auxiliary spring 13 absorbs energy, the self-locking gear 910 meshing with the drive rack 98 rotates and drives the self-locking rod 911 to retract, disengaging from the self-locking hole in the side wall of the slide groove 26, releasing the self-locking state of the slider plate 92. When the slider plate 92 returns to the starting position from right to left, the slider 10 disengages from the slider plate 92, the auxiliary spring 13 pushes the drive rack 98 to move to the left, the self-locking gear 910 meshing with the drive rack 98 rotates and drives the self-locking rod 911 to open, restoring the self-locking state of the slider plate 92.

[0040] Reference Figure 1 , 7A protector 4 is fixedly connected to one end of universal joint 3. To prevent the torque required by screw 6 from being too large, exceeding the maximum torque that universal joint 3 can withstand, thus causing damage to universal joint 3, the protector 4 includes a first protector 18 and a second protector 17. The diameter and thickness of the first protector 18 and the second protector 17 are the same, and the end of universal joint 3 is fixedly connected to the center position of the first protector 18. The first protector 18 is slidably connected to one end of the second protector 17, and screw 6 is fixedly connected to the other end of the second protector 17. A protective spring is fixedly connected to the first protector 18, and a ball bearing 19 is fixedly connected to the end of each protective spring. The diameter of the protective spring is smaller than the diameter of the ball bearing 19. One end of the second protector 17 is provided with a connection to the ball bearing 19. The ball groove 16 is matched, and the depth of the ball groove 16 is equal to half the diameter of the ball 19. When the moisture content of the unloaded wheat is too high, the wheat will stick together and adhere to the screw and the inner wall of the inclined cylinder 5, which will increase the power required to transport the wheat. When the required power reaches the critical value of the protector 4, the ball 19 on the first protector 18 will move towards the first protector 18 under the squeezing action of the second protector 17. At this time, the ball 19 is completely pressed into the first protector 18, and the first protector 18 and the second protector 17 lose the power connection. The power of the first screw 2 cannot be transmitted to the second screw 6, which will cause the second screw 6 to stop rotating. This prevents the universal joint 3 from being damaged due to excessive torque and protects the universal joint 3.

[0041] Reference Figure 4 and 5The connecting mechanism includes a connector 28, an auxiliary spring 13, and a connecting block 14. Spring holes 27 are provided on both sides of the slider 10. Connectors 28 are rotatably mounted on both sides of the slider 10. An auxiliary spring 13 is fixedly mounted in the middle of the connector 28, rotatably mounted within the spring hole 27, and its end is fixedly connected to the slider 10. The end of the connector 28 is L-shaped. A connecting block 14, which mates with the connector 28, is fixedly connected to the side of the slider plate 92 near the slider 10. The slide groove 26 has a wide end and a narrow end. When at the wide end, the connector 28 and the connecting block 14 are separated; when at the narrow end, they mate. When the slider 10 is not in contact with the slider plate 92, the connector 28 is positioned on the slider under the action of the auxiliary spring 13. On the outside of 10, when slider 10 contacts slider plate 92, due to the narrowing of groove 26, connector 28 is squeezed by the inner wall of groove 26 and rotates towards the inside of slider 10 and cooperates with connecting block 14. Auxiliary spring 13 absorbs energy. When slider 10 separates from slider plate 92, due to the widening of groove 26, auxiliary spring 13 releases energy to push connector 28 to rotate towards the outside of slider 10, and connector 28 separates from connecting block 14. The longer end of the L-shaped rod is rotatably connected to slider 10, and the shorter end is used to connect with connecting block 14. At this time, when L-shaped rod 20 contacts the side wall of groove 26, it forms a force-saving lever, so that the friction between L-shaped rod 20 and side wall of groove 26 can be used to push L-shaped rod 20 to contact connecting block 14. The structure is simple and has good stability.

[0042] Although embodiments of the present invention have been given and described in detail, those skilled in the art can still make various optimizations, substitutions, modifications and alterations to these embodiments without departing from the structural principles and inventive spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A spiral-type wheat transport device, characterized in that: The device includes a vertical cylinder (1), a screw (2), a screw (6), an inclined cylinder (5), a sleeve (22), and a gathering device (9). The screw (2) is rotatably connected inside the vertical cylinder (1). A universal joint (3) is fixedly connected to the bottom of the screw (2). The screw (6) is fixedly connected to the end of the universal joint (3). The inclined cylinder (5) is rotatably connected to the outside of the screw (6). The inclined cylinder (5) and the vertical cylinder (1) are sealed together by a metal hose. A sleeve (22) is fitted on the outside of the inclined cylinder (5). The length of the sleeve (22) is less than or equal to the length of the inclined cylinder (5). When the sleeve (22) is only subjected to gravity, the bottom end of the sleeve (22) falls to the lower side of the inclined cylinder (5). A gathering device (9) is connected to the inclined cylinder (5). When the sleeve (22) moves upward relative to the inclined cylinder (5), the material is gathered to the inclined cylinder (5) by the gathering device (9).

2. The spiral wheat transport device according to claim 1, characterized in that: A groove (26) is provided on the outside of the inclined cylinder (5). A long rack (8) is fixedly installed on the right end of the groove (26). The gathering device (9) includes a slider plate (92), a transmission gear (91), a speed regulating gear (97), a push plate (94), and a drive assembly. The slider plate (92) is slidably installed in the groove (26). A support cylinder (95) is rotatably connected to the slider plate (92). The transmission gear (91) and the speed regulating gear (97) are rotatably connected to the slider plate (92). The transmission gear (91) meshes with the speed regulating gear (97) and the long rack (8) respectively. The speed regulating gear (97) is eccentrically positioned on its side. A control rod (96) is rotatably mounted on the side of the support tube (95). Two push plates (94) are rotatably connected to the top of the side of the support tube (95). The top ends of the two push plates (94) are fixedly connected to a return spring (93). When the push plates (94) are not subjected to internal thrust, the two push plates (94) are in a closed state. Two L-shaped rods (20) are rotatably connected to the end of the control rod (96). The right angle positions of the two L-shaped rods (20) are rotatably connected to the inner wall of the support tube (95). The ends of the two L-shaped rods (20) are rotatably connected to the top of the push plates (94). A drive assembly for driving the slider plate (92) to move is connected to the sleeve (22).

3. The spiral wheat transport device according to claim 2, characterized in that: The drive assembly includes a short rack (21), a bracket (25), a rotating shaft (11), a drive gear (29), a toothed plate (24), a rotating gear (12), a slider (10), a locking structure, and a connecting mechanism. The short rack (21) is slidably connected to the left end of the slide groove (26), and the bracket (25) is fixedly installed at the left end of the slide groove (26). The rotating shaft (11) is rotatably connected to the bracket (25). The drive gear (29) meshing with the short rack (21) is provided in the middle of the rotating shaft (11). Sleeve grooves (23) are provided on both sides of the sleeve (22), and a toothed plate (24) is provided inside the sleeve grooves (23). The rotating shaft (11) is fixedly connected to both ends of the rotating shaft (11), and the rotating gear (12) meshes with the toothed plate (24). The short rack (21) is fixedly connected to a slider (10) at its end. A support rod (7) is rotatably connected to the slider (10). The end of the support rod (7) is rotatably connected to the side of the support cylinder (95). A locking mechanism is connected to the slider plate (92). When the slider (10) contacts the slider plate (92), the locking mechanism releases the locking of the slider plate (92). When the slider (10) does not contact the slider plate (92), the locking mechanism locks the slider plate (92) in place in the slide groove (26). A connecting mechanism is provided between the slider (10) and the slider plate (92). When the slider (10) pulls the slider plate (92) to one end of the long rack (8) near the rotating shaft (11) through the connecting mechanism, the slider (10) and the slider plate (92) separate from each other.

4. A spiral wheat transport device according to claim 3, characterized in that: When the support rod (7) is fully retracted, it is parallel to the axis of the inclined cylinder (5) and the sleeve (22), and the connection position of the support rod (7) and the support cylinder (95) is the center of gravity position when the support cylinder (95) is connected to the two closed push plates (94).

5. A spiral wheat transport device according to claim 3, characterized in that: The locking mechanism includes a boss (99), a drive rack (98), a self-locking gear (910), an auxiliary spring (13), and a self-locking rod (911). The drive rack (98) is slidably mounted on the slider plate (92). The drive rack (98) is elastically connected to the slider plate (92) through the auxiliary spring (13). The drive rack (98) has a boss (99) that cooperates with the slider (10) fixed on the side near the slider (10). The self-locking gear (910) that meshes with the drive rack (98) is rotatably connected to the slider plate (92). The self-locking gear (910) that cooperates with the slide groove (26) is rotatably connected at the eccentric position of the self-locking gear (910).

6. A spiral wheat transport device according to claim 3, characterized in that: One end of the universal joint (3) is fixedly connected to a protector (4). The protector (4) includes a first protector disc (18) and a second protector disc (17). The end of the universal joint (3) is fixedly connected to the first protector disc (18). The second protector disc (17) is rotatably connected to the first protector disc (18). The second screw (6) is fixedly connected to the second protector disc (17). A protective spring is fixedly connected to the first protector disc (18). A ball bearing (19) is fixedly connected to the end of the protective spring. One end of the second protector disc (17) is provided with a ball groove (16) that mates with the ball bearing (19). The depth of the ball groove (16) is equal to half the diameter of the ball bearing (19).

7. A spiral wheat transport device according to claim 6, characterized in that: Four rotating shaft brackets (15) are fixedly installed on the inner wall of the inclined cylinder (5). The end of each rotating shaft bracket (15) is provided with an arc surface that cooperates with the screw (6). Each rotating shaft bracket (15) is rotatably connected to the screw (6). The four rotating shaft brackets (15) are distributed along the axial direction, and none of the four rotating shaft brackets (15) overlap in the direction perpendicular to the axial direction.

8. A spiral wheat transport device according to claim 3, characterized in that: The connecting mechanism includes a connector (28), an auxiliary spring (13), and a connecting block (14). Spring holes (27) are provided on both sides of the slider (10). A connector (28) is rotatably installed on both sides of the slider (10). An auxiliary spring (13) is fixedly installed in the middle of the connector (28). The auxiliary spring (13) is rotatably installed in the spring hole (27), and the end of the auxiliary spring (13) is fixedly connected to the slider (10). The end of the connector (28) is L-shaped. A connecting block (14) that cooperates with the short side of the L-shape of the connector (28) is fixedly connected to the side of the slider plate (92) near the slider (10). The two ends of the groove (26) are a wide end and a narrow end, respectively. When it is at the wide end, the connector (28) and the connecting block (14) are separated from each other, and when it is at the narrow end, the connector (28) and the connecting block (14) are connected to each other.

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