A grain conveyor unloading device
Patent Information
- Application Number
- CN202522149554.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-11
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-10-11
AI Technical Summary
由于运送车辆的车斗深度、车型以及现场停放位置存在差异，需要通过调节输送机位置来确定卸料装置的出料口对运送车辆的对正，这一过程不仅操作繁琐、耗时费力，降低物料输送的整体效率，还增加了作业人员的劳动强度与作业时间成本
本实用新型通过设置可伸缩的连接件和用于带动连接件进行伸缩的驱动装置，并在连接件的下方设置角度调节装置来带动导向筒进行转动。通过连接件的伸缩可以调节导向筒与运输车辆之间的高度，而角度调节装置可以调节导向筒出料端的角度，节省人工调节输送机位置的时间，提高工作效率降低人工劳动强度。
Smart Images
Figure CN224783331U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of grain conveying, and in particular relates to an unloading device for a grain conveyor. Background Technology
[0002] Grain conveyors are key equipment in modern agricultural and industrial production for the rapid loading, unloading, and transfer of grain. During operation, a dedicated unloading device is typically installed at the conveyor's outlet. The core function of this device is to guide and constrain the material flowing from the outlet, ensuring it falls accurately and centrally into the truck bed below, thereby reducing material spillage and dust, and improving loading and unloading efficiency and the working environment. Existing unloading devices employ a one-piece, fixed structure design. Due to variations in truck bed depth, vehicle type, and parking location, the alignment of the unloading device's outlet with the truck requires adjusting the conveyor's position. This process is not only cumbersome and time-consuming, reducing overall material transport efficiency, but also increases the labor intensity and time costs for operators. Utility Model Content
[0003] The purpose of this utility model is to provide a unloading device for a grain conveyor to solve the technical problems mentioned in the background art.
[0004] To achieve the above objectives, the specific technical solution of the unloading device for a grain conveyor according to this utility model is as follows: A unloading device for a grain conveyor includes a receiving box located at the outlet end of the grain conveyor. A connecting cylinder is connected to the bottom of the receiving box, and a detachable and retractable connecting member is provided at the bottom of the connecting cylinder. A guide cylinder is provided below the connecting member, and an angle adjustment device capable of rotating the guide cylinder is provided between the connecting member and the guide cylinder. A drive device is provided on the receiving box to drive the angle adjustment device to rise and fall and the connecting member to extend and retract. A support frame is provided on the top surface of the receiving box, and the drive device is mounted on the support frame. The drive device includes a power unit mounted on the support frame, and the power unit is connected to the angle adjustment device via a transmission part. The connection between the transmission part and the angle adjustment device is evenly arranged to make the raising and lowering of the angle adjustment device and the connecting member by the power unit via the transmission part more stable.
[0005] Furthermore, the transmission unit includes two protrusions mounted on the support frame, each with a bearing seat, and a transmission shaft rotatably connected between the two bearing seats via bearings. Two pulleys are mounted on the transmission shaft, each with two grooves. A traction rope is wound within each groove, and the free end of the traction rope is connected to an angle adjustment device. The two traction ropes on the same pulley are wound in opposite directions, and each traction rope passes through both sides of the receiving box and connects to the angle adjustment device. The power unit is a first geared motor mounted on the support frame and connected to the transmission shaft.
[0006] Furthermore, guide wheels are fixedly mounted on the top and bottom ends of the receiving box sidewalls at the positions corresponding to the traction rope positions, and guide wheels are also fixedly mounted on the connecting cylinder at the positions corresponding to the traction rope positions. The guide wheels are arranged from top to bottom as a first guide wheel, a second guide wheel, and a third guide wheel. The traction rope passes through the first and second guide wheels, and passes through the inside of the second guide wheel to connect with the angle adjustment device.
[0007] Furthermore, the connecting component is a telescopic cylinder, which consists of spaced-apart support rings and curtain fabric disposed between adjacent support rings. A top ring and a bottom ring are respectively provided at the top and bottom ends of the telescopic cylinder, and both the top ring and the bottom ring are connected to the first flange and the angle adjustment device by bolts.
[0008] Furthermore, the angle adjustment device includes a second flange connected to the bottom ring, a support cylinder at the bottom end of the second flange, and a third flange at the bottom end of the support cylinder. A connecting ring is rotatably mounted on the third flange, and a guide cylinder is detachably mounted on the bottom surface of the connecting ring via a connecting bracket. A mounting plate is located on the outer peripheral wall of the support cylinder along its diameter, and a drive motor is mounted on the mounting plate. The drive motor is connected to the connecting cylinder via a transmission assembly. The traction rope is detachably connected to the second flange via a traction plate.
[0009] Furthermore, the transmission assembly includes a sprocket located at the output end of the drive motor and a chain ring located on the outer peripheral wall of the connecting ring, and the sprocket and the chain ring are connected by a chain.
[0010] Furthermore, multiple support wheels are distributed around the top surface of the connecting ring, and the support wheels and their axes are arranged parallel to the axis of the connecting ring. The support wheels have grooves on their circumference, and the connecting ring is located in the grooves of each support wheel. The connecting ring is mounted on the connecting ring by rotating through the support wheels.
[0011] Furthermore, the connecting frame is installed on the bottom surface of the connecting ring, and multiple connecting frames are distributed around the axis of the connecting ring. The connecting frame is connected to the guide cylinder by bolts and nuts.
[0012] The unloading device for a grain conveyor of this utility model has the following advantages: This invention features a retractable connector and a drive device for extending and retracting the connector. An angle adjustment device is located below the connector to rotate the guide cylinder. The extension and retraction of the connector adjusts the height between the guide cylinder and the transport vehicle, while the angle adjustment device adjusts the angle of the guide cylinder's discharge end. This saves time spent manually adjusting the conveyor position, improves work efficiency, and reduces labor intensity. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of an unloading device for a grain conveyor according to the present invention; Figure 2 This is a schematic diagram of the internal structure of the conveyor of this utility model; Figure 3 This is a schematic diagram of the first guide wheel, second guide wheel, third guide wheel, and traction rope of this utility model; Figure 4 This is a schematic diagram of the connector, support cylinder, third flange, connecting ring, and gear ring of this utility model; Figure 5 This is a schematic diagram of the drive motor and transmission assembly of this utility model.
[0014] Explanation of markings in the diagram: 1. Receiving box; 2. Connecting cylinder; 3. First flange; 4. Telescopic cylinder; 41. Top ring; 42. Bottom ring; 5. Support cylinder; 6. Second flange; 7. Support wheel; 8. Chain ring; 81. Connecting ring; 9. Connecting frame; 10. Guide cylinder; 11. Third flange; 12. Drive motor; 13. Sprocket; 14. Chain; 15. Mounting plate; 16. Support frame; 17. Protrusion; 18. Drive shaft; 19. Pulley; 20. First geared motor; 21. Traction rope; 22. First guide wheel; 23. Second guide wheel; 24. Third guide wheel; 25. Fixed frame; 26. Traction plate; 27. Machine housing; 28. Conveyor belt; 29. Second geared motor. Detailed Implementation
[0015] To better understand the purpose, structure, and function of this utility model, the following detailed description of a grain conveyor unloading device is provided in conjunction with the accompanying drawings.
[0016] like Figures 1 to 5As shown, this utility model discloses a unloading device for a grain conveyor, including a receiving box 1 located at the outlet end of the grain conveyor. A connecting cylinder 2 is connected to the bottom end of the receiving box 1, and a detachable and retractable connecting member is provided at the bottom end of the connecting cylinder 2. Simultaneously, a guide cylinder 10 is provided below the connecting member, and an angle adjustment device that can drive the guide cylinder 10 to rotate is provided between the connecting member and the guide cylinder 10. A drive device is also provided on the receiving box 1 to drive the angle adjustment device to rise and fall and the connecting member to extend and retract. The retractable connecting member, the drive device for driving the connecting member to extend and retract, and the angle adjustment device allow for adjusting the height between the guide cylinder 10 and the transport vehicle by extending and retracting the connecting member through the drive device. Furthermore, the angle adjustment device can adjust the horizontal angle of the discharge end of the guide cylinder 10 so that the discharge end of the guide cylinder 10 is aligned with the material hopper of the conveyor, effectively saving time for manual adjustment of the conveyor position, improving work efficiency, and reducing manual labor intensity.
[0017] It is important to note that, such as Figure 1 and Figure 2 As shown, the conveyor consists of a housing 27 and a conveyor belt 28 disposed inside the housing 27 (this is prior art). The side wall of the housing 27 is rotatably connected to the side wall of the receiving box 1 via a connecting shaft. A second geared motor 29 is located outside the housing 27 and is connected to its corresponding connecting shaft. In use, the second geared motor 29 can drive the connecting shaft to rotate, and the connecting shaft will drive the receiving box 1 to rotate. This allows adjustment of the angle between the unloading device and the conveyor, and also facilitates the folding and storage of the unloading device and the conveyor.
[0018] like Figure 1 and Figure 2 As shown, an H-shaped support frame 16 is provided on the top surface of the receiving box 1, and the drive device is mounted on the support frame 16. The drive device includes a power unit mounted on the support frame 16, and the power unit is connected to the angle adjustment device through a transmission part. The connection between the transmission part and the angle adjustment device is evenly distributed to make the lifting and lowering of the angle adjustment device and the extension and retraction of the connecting parts by the power unit through the transmission part more stable. The H-shaped support frame 16 can distribute its own weight and the weight of the drive device onto the top surface and the outer peripheral wall of the receiving box 1, thus preventing the receiving box 1 from being damaged due to the weight of the drive device acting entirely on the top surface of the receiving box 1, and effectively improving the service life of the receiving box 1.
[0019] The aforementioned transmission unit includes two protrusions 17 mounted on the support frame 16. Each protrusion 17 has a bearing seat, and a transmission shaft 18 is rotatably mounted between the two bearing seats via bearings. Two pulleys 19 are mounted on the transmission shaft 18, each pulley 19 having two grooves on its circumference. A traction rope 21 is wound within each groove, and the free end of the traction rope 21 is connected to an angle adjustment device. The power unit for driving the transmission shaft 18 is located in the middle of the support frame 16. This power unit is a first geared motor 20 mounted on the support frame 16 and connected to the transmission shaft 18. The first geared motor 20 is connected to an external power source. Specifically, the two traction ropes 21 on the same pulley 19 are wound in opposite directions, and each traction rope 21 passes through both sides of the receiving box 1 and is connected to the angle adjustment device. In use, the first geared motor 20 drives the transmission shaft 18 to rotate, and the two pulleys 19 fixed on the transmission shaft 18 rotate synchronously. Because the traction ropes 21 are wound in the grooves of the pulley 19 in a specific manner, the rotation of the pulley 19 synchronously winds up and down the four traction ropes 21. The free ends of the traction ropes 21 are connected downwards to the angle adjustment device and the guide cylinder 10. When the first reduction motor 20 rotates forward and tightens the traction ropes 21, it pulls the guide cylinder 10 upward through the angle adjustment device, while simultaneously compressing the telescopic connector, thereby raising the guide cylinder 10. Conversely, when the first reduction motor 20 rotates in reverse and releases the traction ropes 21, the guide cylinder 10 descends under the action of the angle adjustment device and the gravity of the guide cylinder 10, and the connector extends, thereby lowering the guide cylinder 10. The lifting and lowering stroke can be controlled by controlling the rotation angle and number of rotations of the first reduction motor 20.
[0020] like Figure 2 and Figure 3As shown, to prevent damage to both the traction rope 21 and the receiving box 1 due to friction during the winding and unwinding process, guide wheels are provided at the top and bottom of the side wall of the receiving box 1 corresponding to the position of the traction rope 21 via fixing brackets 25. Similarly, guide wheels are also provided on the connecting cylinder 2 at the position of the traction rope 21 via fixing brackets 25. The guide wheels, from top to bottom, are a first guide wheel 22, a second guide wheel 23, and a third guide wheel 24. The traction rope 21 passes through the first guide wheel 22 and the second guide wheel 23, and then passes through the inside of the second guide wheel 23 to connect with the angle adjustment device. The traction rope 21 passes through the outside of the first guide wheel 22 and the second guide wheel 23, keeping it away from the side wall of the receiving box 1 to reduce friction. The traction rope 21 passes through the inside of the third guide wheel 24, ensuring that the portion of the traction rope 21 passing through the third guide wheel 24 is perpendicular to the angle adjustment device. The arrangement of the first guide wheel 22, the second guide wheel 23 and the third guide wheel 24 not only prevents friction between the traction rope 21 and the receiving box 1, but also provides a stable running track for the traction rope 21, reduces the increase in load on the first gear motor 20 due to friction, and improves the service life of the first gear motor 20.
[0021] Specifically, the connecting component is preferably a telescopic cylinder 4, which consists of spaced-apart support rings and a curtain fabric disposed between adjacent support rings. The support rings provide support and shaping for the curtain fabric, ensuring that the telescopic cylinder 4 maintains a stable cylindrical channel in both telescopic and stationary states, effectively guiding materials. A top ring 41 and a bottom ring 42 are respectively provided at the top and bottom of the telescopic cylinder 4, and both the top ring 41 and the bottom ring 42 are connected to the first flange 3 and the angle adjustment device by bolts.
[0022] The angle adjustment device includes a second flange 6 connected to the bottom ring 42. A downwardly extending support cylinder 5 is located at the bottom of the second flange 6, and a third flange 11 is located at the bottom of the support cylinder 5. A connecting ring 81 is rotatably mounted on the third flange 11. The guide cylinder 10 is detachably mounted on the bottom surface of the connecting ring 81 via a connecting bracket 9. Simultaneously, a mounting plate 15 is provided along the diameter of the outer peripheral wall of the support cylinder 5, and a drive motor 12 connected to an external power source is mounted on the mounting plate 15. The drive motor 12 is connected to the connecting cylinder 2 via a transmission assembly. The free end of the traction rope 21 is connected to the second flange 6. The telescopic cylinder 4 is connected to the first flange 3 via the top ring 41 at the top and to the second flange 6 via the bottom ring 42 at the bottom. This allows for the independent operation of the telescopic cylinder 4, the adjustment device, and the guide cylinder 10. When any component needs repair or replacement, it can be quickly disassembled, greatly improving the maintainability of the equipment. In use, the drive motor 12 starts, which drives the connecting ring 81 to rotate via the transmission assembly. Because the traction rope 21 is connected to the second flange 6, it provides horizontal control of the second flange 6 under the action of the guide wheels. The rotation of the connecting ring 81 drives the guide cylinder 10 to rotate 360° horizontally via the connecting frame 9. This changes the orientation of its discharge port, thus controlling the unloading angle. It should be noted that both the drive motor 12 and the first geared motor 20 are connected to an external remote control, allowing them to be started and stopped.
[0023] The free end of the traction rope 21 is detachably connected to the second flange 6 via a traction plate 26. The traction plate 26 is L-shaped and is fixedly mounted on the second flange 6. A bolt is threaded onto the end of the traction plate 26 away from the second flange 6. The traction rope 21 is wound around the bolt, and the connection and fixation of the traction rope 21 on the traction plate 26 can be achieved by tightening the bolt to the traction plate 26.
[0024] like Figure 4 and Figure 5As shown, the transmission assembly for connecting the drive motor 12 and the connecting ring 81 includes a sprocket 13 located at the output end of the drive motor 12 and a chain ring 8 located on the outer peripheral wall of the connecting ring 81. The sprocket 13 and the chain ring 8 are connected by a chain 14. When the drive motor 12 is working, it drives the sprocket 13 at its output end to rotate, and the sprocket 13 drives the chain ring 8, which meshes with it, to rotate via the chain 14. At this time, the chain ring 8 drives the connecting ring 81, which is connected to it, to rotate. Specifically, multiple support wheels 7 are rotatably distributed around the axis of the connecting ring 81 on its top surface. The support wheels 7 are arranged with their axes parallel to the axis of the connecting ring 81. The support wheels 7 have grooves circumferentially formed, and the connecting ring 81 is located in the grooves of each support wheel 7. The connecting ring 81 is rotatably mounted on the connecting ring 81 via the support wheels 7. When the connecting ring 81 rotates, the supporting wheels 7 that support it will also rotate. This reduces the friction between the connecting ring 81 and the third flange 11, improves the smoothness of the rotation of the connecting ring 81, and reduces the load on the drive motor 12.
[0025] Specifically, the connecting bracket 9 is located on the bottom surface of the connecting ring 81, and the connecting bracket 9 is Z-shaped, with multiple connecting brackets 9 distributed around the axis of the connecting ring 81. The connecting bracket 9 is connected to the guide cylinder 10 via bolts and nuts. The bolts and nuts allow for positioning and fixing of the guide cylinder 10 during installation or maintenance. Furthermore, when the guide cylinder 10 needs to be replaced, cleaned, or repaired, it can be removed simply by loosening the nuts, making the operation simple, time-saving, and labor-saving.
[0026] Instructions for use: When adjusting the relative height between the guide cylinder 10 and the transport vehicle bed, the operator starts the first reduction motor 20 via an external remote control. The first reduction motor 20 drives the drive shaft 18 to rotate, and the two pulleys 19 fixed on the drive shaft 18 rotate synchronously. The rotation of the pulleys 19 will simultaneously release and retract the four traction ropes 21. When the first reduction motor 20 rotates forward and tightens the traction ropes 21, the traction force pulls the entire angle adjustment device and guide cylinder 10 upward through the second flange 6, thereby raising the guide cylinder 10. Similarly, when the guide cylinder 10 needs to be lowered, the first reduction motor 20 reverses, releasing the traction ropes 21. Under the action of the angle adjustment device and the guide cylinder 10, the entire guide cylinder 10 and angle adjustment device lower, and the telescopic cylinder 4 extends accordingly, lowering the guide cylinder 10. When it is necessary to change the horizontal orientation of the guide cylinder 10's discharge port, the drive motor 12 is started via the remote control. The sprocket 13 at its output end begins to rotate, transmitting power to the chain ring 8 meshing with the chain 14 via the chain 14. Furthermore, the chain ring 8 drives the connecting ring 81 connected to it to rotate. When the connecting ring 81 rotates, the guide cylinder 10, which is located on the connecting ring 81 via the connecting frame 9, will rotate 360° horizontally around its axis. This changes the horizontal angle of the discharge port to align it with different positions inside the hopper.
[0027] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.
Claims
1. A unloading device for a grain conveyor, characterized in that: It includes a receiving box (1) located at the outlet end of the grain conveyor, a connecting cylinder (2) connected to the bottom end of the receiving box (1), and a detachable and telescopic connecting piece at the bottom end of the connecting cylinder (2); A guide cylinder (10) is provided below the connector, and an angle adjustment device that can drive the guide cylinder (10) to rotate is provided between the connector and the guide cylinder (10); A drive device is provided on the receiving box (1) to drive the angle adjustment device to rise and fall and the connecting parts to extend and retract; A support frame (16) is provided on the top surface of the receiving box (1), and a drive device is provided on the support frame (16). The drive device includes a power device provided on the support frame (16), and the power device is connected to the angle adjustment device through a transmission part. The connection between the transmission unit and the angle adjustment device is evenly arranged so that the power unit can drive the angle adjustment device and the connecting parts to rise and fall more smoothly through the transmission unit.
2. The unloading device for a grain conveyor according to claim 1, characterized in that: The transmission unit includes two protrusions (17) on the support frame (16), each of the two protrusions (17) is provided with a bearing seat, and a transmission shaft (18) is rotatably provided between the two bearing seats through a bearing. Two pulleys (19) are provided on the drive shaft (18), and each pulley (19) has two grooves. A traction rope (21) is wound in the groove of each pulley (19), and the free end of the traction rope (21) is connected to the angle adjustment device. The two traction ropes (21) on the same pulley (19) are wound in opposite directions, and the two traction ropes (21) on the same pulley (19) pass through the two sides of the receiving box (1) and are connected to the angle adjustment device respectively; The power unit is a first geared motor (20) mounted on the support frame (16) and connected to the drive shaft (18).
3. The unloading device for a grain conveyor according to claim 2, characterized in that: The top and bottom of the side wall of the receiving box (1) are equipped with guide wheels through the fixing frame (25) at the position corresponding to the traction rope (21), and the connecting cylinder (2) is equipped with guide wheels through the fixing frame (25) at the position corresponding to the traction rope (21). The guide wheels are arranged from top to bottom as the first guide wheel (22), the second guide wheel (23) and the third guide wheel (24). The traction rope (21) passes through the first guide wheel (22) and the second guide wheel (23), and passes through the inside of the second guide wheel (23) to connect with the angle adjustment device.
4. The unloading device for a grain conveyor according to claim 1, characterized in that: The connector is a telescopic cylinder (4), and the telescopic cylinder (4) is composed of spaced support rings and curtains disposed between adjacent support rings; A top ring (41) and a bottom ring (42) are respectively provided at the top and bottom of the telescopic cylinder (4), and both the top ring (41) and the bottom ring (42) are connected to the first flange (3) and the angle adjustment device by bolts.
5. A unloading device for a grain conveyor according to claim 1 or 4, characterized in that: The angle adjustment device includes a second flange (6) connected to the bottom ring (42), a support cylinder (5) at the bottom end of the second flange (6), and a third flange (11) at the bottom end of the support cylinder (5). A connecting ring (81) is rotatably provided on the third flange (11), and a guide cylinder (10) is detachably provided on the bottom surface of the connecting ring (81) through a connecting frame (9). An mounting plate (15) is provided on the outer peripheral wall of the support cylinder (5) along its diameter direction, and a drive motor (12) is provided on the mounting plate (15). The drive motor (12) is connected to the connecting cylinder (2) through a transmission assembly. The traction rope (21) is detachably connected to the second flange (6) via the traction plate (26).
6. The unloading device for a grain conveyor according to claim 5, characterized in that: The transmission assembly includes a sprocket (13) located at the output end of the drive motor (12), a chain ring (8) located on the outer peripheral wall of the connecting ring (81), and the sprocket (13) and the chain ring (8) are connected by a chain (14).
7. The unloading device for a grain conveyor according to claim 6, characterized in that: The top surface of the connecting ring (81) is provided with multiple support wheels (7) that rotate around its axis. The support wheels (7) are arranged parallel to the axis of the connecting ring (81). The support wheels (7) have grooves in their circumference. The connecting ring (81) is located in the grooves of each support wheel (7). The connecting ring (81) is rotated on the connecting ring (81) through the support wheels (7).
8. The unloading device for a grain conveyor according to claim 5, characterized in that: The connecting frame (9) is located on the bottom surface of the connecting ring (81), and multiple connecting frames (9) are distributed around the axis of the connecting ring (81). The connecting frame (9) and the guide cylinder (10) are connected by bolts and nuts.