Uniform material distribution mechanism with dynamic balance arm and grain pump truck composed of uniform material distribution mechanism

Abstract

The invention discloses a uniform distribution mechanism with a dynamic balance arm and a grain pump truck composed of the uniform distribution mechanism, and relates to the technical field of grain conveying. The material distribution mechanism comprises a counterweight mechanism, a horizontal telescopic conveying pipe assembly and a grain guide assembly, the grain guiding assembly comprises a telescopic material pipe, a connecting piece and a material guiding frame. The feeding end of the telescopic material pipe is connected with the tail end of the horizontal telescopic conveying pipe assembly. The top of the discharging end of the telescopic material pipe is in sliding connection with the material guiding frame, the telescopic material pipe extends to be in a bent pipe shape to form a continuous and closed material guiding channel discharging vertically downwards, and the telescopic material pipe is in a horizontal straight line shape after being contracted. The other end of the material guide frame is connected with the telescopic arm; the balance weight mechanism is connected with the other end of the horizontal telescopic conveying pipe assembly through a rotating shaft, connected with the supporting frame through a hydraulic mechanism and capable of rotating relative to the supporting frame. The invention further discloses a grain pump truck comprising the material distribution mechanism. The grain pump truck adopts an integrated design, is convenient to move, can efficiently and uniformly distribute materials, and effectively solves the problem of material distribution and grading when grains enter a warehouse at present.

Description

Technical Field

[0001] This invention relates to the field of grain conveying technology, and in particular to a grain pump truck with a uniform material distribution mechanism having a dynamic balance arm and the same. Background Technology

[0002] The grain depot's grain loading process is time-consuming and labor-intensive. The existing method is to use a belt conveyor system made up of multiple belt conveyors to feed grain from the discharge port of dump trucks or manually into the belts, which then transport the grain into the grain silo. When the end of the belt is full, the layout of the belts needs to be manually adjusted to move the end of the belt to another area for reloading. After the bottom of the grain depot is completely full, a high belt conveyor is needed to push the grain into the grain silo from the upper feed window to achieve the goal of leveling the silo.

[0003] Existing technology CN120229580A discloses a pneumatic conveying system for grain loading and distribution, including a grain blower, a lift, and an elevator. The grain blower includes a grain conveying pipe, an air source device, and a grain feeding device. The air source device is connected to the rear end of the grain conveying pipe, and the grain feeding device is located above the middle of the grain conveying pipe and connected to it. A telescopic pipe is slidably fitted at the front end of the grain conveying pipe, and the front end of the telescopic pipe has a grain throwing bend that can rotate around its axis. Although this invention achieves pneumatic conveying of grain through the air source device of the grain blower, the grain entering the warehouse is prone to graded distribution from near to far from the outlet due to the blowing effect of the air and gravity, affecting the uniformity of grain quality distribution in the warehouse. Secondly, this grain loading and distribution system consists of multiple devices, and if one device fails, the entire conveying operation will stop, and the downtime depends on the difficulty of repair and the procurement cycle of spare parts. In addition, the entire grain blower is set on the lift, posing a significant safety hazard due to high-altitude operation.

[0004] CN114084680A discloses a grain guiding device, including a support, a conveying pipe, a telescopic conveying pipe, a telescopic power arm, a swinging mechanism, and a rotating mechanism. The support supports the rotating mechanism above the grain silo. The telescopic conveying pipe, the telescopic power arm, and the swinging mechanism are mounted on the rotating mechanism and can be driven by the rotating mechanism to rotate around a vertical axis. The telescopic power arm is connected to the telescopic conveying pipe to drive the telescopic conveying pipe to extend and retract. The upper ends of the telescopic conveying pipe and the telescopic power arm are rotatably mounted. The swinging mechanism connects the telescopic conveying pipe and / or the telescopic power arm to drive the telescopic conveying pipe and the telescopic power arm to swing relative to the vertical axis. One end of the conveying pipe is connected to the upper end of the telescopic conveying pipe. Although this grain guiding device can achieve vertical feeding and avoid graded distribution of grain after entering the silo, the fixed position of the grain guiding device makes it difficult to meet the needs of large flat warehouses for rapid adjustment of the feeding position.

[0005] Therefore, there is an urgent need to develop and design a uniform feeding mechanism with a dynamic balancing arm that can quickly adjust the feeding position and ensure that the grain is evenly distributed after entering the warehouse, as well as a grain pump truck that is easy to move, in order to meet the loading needs of grain warehouses such as flat warehouses. Summary of the Invention

[0006] The technical problem to be solved by this invention is to overcome the shortcomings of the prior art and provide a uniform feeding mechanism with a dynamic balance arm that is simple in structure, easy to use, and allows for quick adjustment of the feeding position, which is conducive to the uniform distribution of grain. This feeding mechanism can be in a horizontal state to reduce its space occupation when equipment needs to enter a flat warehouse or other grain warehouse, allowing it to quickly enter the warehouse through the windows. It can also be extended to change the feeding position and deform the feeding pipe to form an arc-shaped channel, allowing the material to be discharged vertically downward from its outlet for the transportation of grain and other materials. It also effectively avoids the phenomenon of material distribution and grading when grain enters the warehouse. At the same time, a mobile grain pump truck with this uniform feeding mechanism with a dynamic balance arm is provided to meet the loading needs of flat warehouses.

[0007] The technical solution adopted by this invention to solve its technical problem is: A uniform feeding mechanism with a dynamic balance arm includes a rotary mechanism, a support frame, a counterweight mechanism, a horizontal telescopic conveying pipe assembly, and a grain guiding assembly. The support frame is mounted on the rotary mechanism; The horizontal telescopic conveying pipe assembly includes an upper connecting bend, a horizontal telescopic pipe, and a telescopic arm. The two ends of the upper connecting bend are respectively connected to the horizontal telescopic pipe and the rotary mechanism. The other end of the horizontal telescopic pipe is connected to the grain guiding assembly. One end of the telescopic arm is fixed on the support frame, and the other end is connected to the horizontal telescopic pipe. The telescopic arm can drive the horizontal telescopic pipe to extend and retract. The grain guiding assembly includes a telescopic material tube, a connector, and a guide frame. The inlet end of the telescopic material tube is connected to the end of a horizontal telescopic pipe via the connector; the top of its outlet end is slidably connected to the guide frame and can slide relative to the guide frame. The telescopic material tube extends into a curved shape to form a continuous and closed vertical downward material guiding channel, and after retraction, it becomes a horizontal straight line; the other end of the guide frame is connected to a telescopic arm. The counterweight mechanism is connected to the other end of the horizontal telescopic conveying pipe assembly via a rotating shaft and to the support frame via a hydraulic mechanism. It can rotate relative to the support frame. By controlling the rotation of the counterweight mechanism relative to the support frame, the torque of the horizontal telescopic conveying pipe assembly during the telescopic process is balanced, so that the center of gravity of the fabric spreading mechanism is always on the center line of the support frame.

[0008] The uniform material distribution mechanism with a dynamic balance arm of the present invention, by employing a deformable grain guiding component, allows the horizontally linear telescopic material pipe to facilitate the rapid entry of grain pump trucks into the grain silos through windows such as flat warehouses. The deformed telescopic material pipe can change the direction of the horizontal movement of grain material flow in the horizontal telescopic pipe, forming a vertically downward material flow. Through the combination of the horizontal telescopic pipe and the telescopic arm, the lateral position of the grain can be adjusted efficiently and quickly, thereby achieving the purpose of uniform material distribution. It also effectively avoids the phenomenon of graded distribution of grain in the horizontal direction after entering the silo in conventional pneumatic conveying equipment (such as the grain pump truck disclosed in CN201810725677.X) that uses a projectile-type material distribution mechanism. Secondly, the counterweight mechanism rotates (swings) relative to the support frame via a hydraulic system. This counterweight mechanism occupies less space and can achieve a larger balancing torque with a smaller displacement. It can adjust the counterweight position in real time to keep the center of gravity of the equipment stable. This effectively avoids the need for frequent loading and unloading of counterweights required by conventional fixed counterweights. It can also counteract the overturning torque changes caused by the extension and retraction of the fabric placing arm in real time, providing a solid safety guarantee for long-term and large-scale fabric placing operations. In addition, the rotating counterweight mechanism also helps to lower the overall center of gravity of the fabric placing mechanism when it is not in the retracted state, which is beneficial to the movement of the grain pump truck.

[0009] In one exemplary embodiment, the telescopic material tube includes several sequentially hinged guide cylinders and a hinge shaft. The guide cylinder includes a hollow material cylinder body, a front connecting plate, and a rear connecting plate. The top front and rear ends of the hollow material cylinder body are respectively provided with a front connecting plate and a rear connecting plate. Both the front and rear connecting plates are provided with connecting through holes for the hinge shaft to pass through, so that adjacent guide cylinders can rotate relative to each other within a certain angle range, allowing the telescopic material tube as a whole to switch between shrinking into a horizontal straight shape and extending into a curved tube shape. The front end of the hollow material cylinder body of the last guide cylinder is provided with a mounting plate. The two sides of the mounting plate are connected to the mounting base, and the mounting base is provided with rollers for connecting the guide frame. The rollers are placed in the slide rail of the guide frame and can move along the slide rail.

[0010] Preferably, the number of guide cylinders is 5 to 9, and the side inclination angle of the hollow cylinder body is 10 to 18°.

[0011] Preferably, the hollow material cylinder body is a hollow isosceles trapezoidal body, and the length of its top is greater than the length of its bottom, so that when the hollow material cylinder body is extended into a curved tube shape, adjacent hollow material cylinder bodies can abut against each other to form a continuous and closed material guiding channel.

[0012] The connector is a hollow cylinder. The cross-section of the end of the hollow cylinder connected to the telescopic material tube is square, and the top of the cylinder is provided with a front connecting plate that matches the rear connecting plate of the first guide cylinder. The end connected to the horizontal telescopic pipe is provided with a circular connecting plate, which has multiple connecting holes.

[0013] In one exemplary embodiment, the guide frame includes a guide rod, an end plate, a slide rail, a connecting seat, and a guide wheel. One end of the guide rod is connected to the end plate, and the other end is connected to the connecting seat. The connecting seat is provided with a guide wheel. The slide rail is located on the inner side of the guide rod near the end plate and is rotatably connected to the roller of the telescopic material tube. The guide wheel is engaged on the guide seat of the telescopic arm.

[0014] In one exemplary embodiment, the counterweight mechanism includes a connecting frame and a counterweight block. The counterweight block is connected to the end of the telescopic arm via the connecting frame. The middle part of the connecting frame is connected to the middle part of the support frame via a hydraulic mechanism, and the support frame rotates relative to the connecting frame through the extension and retraction of the hydraulic mechanism.

[0015] In one exemplary embodiment, the horizontal telescopic pipe includes a horizontal fixed pipe and a horizontal movable pipe. The inlet end of the horizontal fixed pipe is fixedly connected to the upper connecting bend, and its outlet end is connected to the horizontal movable pipe. The horizontal movable pipe is sleeved on the horizontal fixed pipe, and its end is connected to the end of the telescopic arm.

[0016] The telescopic arm includes a fixed arm, an adjustable arm, and a drive device. The fixed arm is mounted on a support frame, the adjustable arm is sleeved on the fixed arm, and the drive device is located at the end of the fixed arm away from the adjustable arm.

[0017] In one exemplary embodiment, the end of the adjusting arm is provided with a limiting frame. The limiting frame includes a lower support sleeved on the horizontal telescopic pipe and an upper support connected to the end of the telescopic arm. The upper support is provided with an end support seat and a connecting support seat. The connecting support seat is connected to the lower support seat. The end support seat is provided with a pin that passes through the guide rod, and the guide rod can rotate around the pin. When the rear end of the guide rod moves horizontally forward as the telescopic arm extends, its front end rotates downward under the gravity of the guide tube itself, causing the telescopic material tube to extend and form a curved tube shape, thus constructing a continuous and closed vertical downward material channel. When the rear end of the guide rod moves horizontally backward as the telescopic arm retracts, after the rear end of the guide rod contacts the guide seat on the telescopic arm, it gradually moves downward. Its front end rotates around the end support seat, causing the front end of the guide rod to move upward, causing the telescopic material tube to retract and gradually switch to a straight shape, thereby satisfying the window of the grain guiding assembly to enter and exit the flat warehouse.

[0018] In one exemplary embodiment, the guide seat is symmetrically arranged on the telescopic arm and includes a mounting frame, a support plate, and a guide plate. The mounting frame is symmetrically installed on the side of the telescopic arm, the support plate is L-shaped and fixed on the mounting frame, and the guide plate is inclinedly arranged on the support plate.

[0019] The guide plate includes an inclined plate, a horizontal plate, and a vertical baffle connected in sequence. The inclined plate is disposed on the horizontal plate of the support plate near the end of the telescopic arm, and the vertical baffle is disposed on the vertical plate of the support plate. The guide plate is integrally formed.

[0020] Another technical solution provided by the present invention to solve its technical problem is as follows: A grain pump truck for conveying materials to a silo includes an air source assembly for providing high-pressure gas to drive the material conveying, a feeding assembly connected to the air source assembly for feeding materials, a vertical lifting conveying pipe assembly connected to the feeding assembly, a uniform material distribution mechanism with a dynamic balance arm, and a mobile chassis. The mobile chassis supports and fixes the air source assembly, the feeding assembly, and the vertical lifting conveying pipe assembly, and can drive the grain pump truck to move as a whole. The uniform material distribution mechanism with a dynamic balance arm is disposed above the vertical lifting conveying pipe assembly and communicates with the discharge port of the vertical lifting conveying pipe assembly.

[0021] The vertical lifting conveying pipe assembly includes a lower connecting bend, a lifting truss, a vertical telescopic pipe, and a lifting drive mechanism. The two ends of the lower connecting bend are respectively connected to the feeding assembly and the vertical telescopic pipe. The vertical telescopic pipe is installed inside the lifting truss, and the end of the vertical telescopic pipe is connected to a slewing mechanism, which is fixed to the top of the lifting truss. The lifting truss is connected to the lifting drive mechanism and is raised and lowered by the extension and retraction of the lifting drive mechanism, which in turn drives the vertical telescopic pipe to extend and retract.

[0022] The lifting truss includes a fixed truss, a middle truss, and a top truss. The fixed truss has an inner slide rail inside, and the top truss has an outer slide rail outside. Multiple sets of lifting guide wheels are symmetrically arranged on both sides of the middle truss, and the lifting guide wheels are slidably connected to the inner and outer slide rails.

[0023] The vertical telescopic pipe includes a vertical fixed pipe and a vertical movable pipe. The two ends of the vertical fixed pipe are respectively connected to the lower connecting bend and the vertical movable pipe. The two ends of the vertical fixed pipe are provided with end connecting plates. A lifting guide rod is provided between the end connecting plates. The lifting guide rod is sleeved in the limiting cylinder. The limiting cylinder is fixed on the end connecting plate.

[0024] The air outlet of the air source assembly is connected to the feeding assembly. The air source assembly includes a dustproof and soundproof cover, a pressure generating device for generating high-pressure gas, an intake silencer connected to the intake end of the pressure generating device, and a pipeline silencer connected to the outlet end of the pressure generating device. The dustproof and soundproof cover is fitted over the pressure generating device. The outlet end of the pipeline silencer is connected to the intake port of the feeding assembly. The pipeline silencer is used to change the flow direction of the high-pressure gas and reduce the noise at the outlet end of the pressure generating device and the noise generated by the high-pressure gas impacting the pipeline when changing its flow direction.

[0025] The air pressure generating device includes a Roots blower and a drive motor. The inlet silencer is sealed to the inlet end of the Roots blower, and the outlet end of the Roots blower is connected to the inlet end of the duct silencer. The blower and the motor are connected by a transmission belt fitted on the blower pulley and the motor pulley. A dustproof and soundproof cover is used to cover the blower pulley, the motor pulley, and the transmission belt to reduce dust, droplets, or other debris from entering the blower pulley and the motor pulley, and to reduce the aging and deformation of the transmission belt caused by sunlight, which would affect the transmission between the Roots blower and the drive motor.

[0026] The outlet of the duct silencer is sequentially connected to a flexible joint, a check valve, a T-joint, and a venturi tube. The inlet of the check valve is connected to the flexible joint, and the outlet of the check valve is connected to one horizontal end of the T-joint. The other horizontal end of the T-joint is connected to the inlet of the venturi tube, and the vertical end of the T-joint is used to install a safety valve. The outlet of the venturi tube is used to connect to the installation pipe of the feed assembly.

[0027] The feeding assembly includes an installation pipe, a feed hopper, an airlock, and a feeding hopper. One end of the installation pipe is connected to the outlet pipe of the air source assembly, and the other end is connected to the lower connecting elbow of the vertical lifting conveyor assembly. The feed hopper is located on the installation pipe, and its inlet is connected to the airlock. The airlock is located below the feeding hopper, and its inlet is connected to the feeding hopper. The airlock is used to transport the material output from the feeding hopper into the feeding hopper and prevent the high-pressure gas in the installation pipe from being discharged from the feeding hopper. The material is poured into the feeding hopper, passes through the airlock and the feeding hopper in sequence, and enters the installation pipe. The large amount of high-pressure gas provided by the air source assembly pushes the material in sequence into the installation pipe, the vertical lifting conveyor assembly, and the horizontal telescopic conveyor assembly, and then sprays it out from the grain guiding component into the silo.

[0028] The top of the feeding hopper is equipped with a dust suction pipe, and the other end of the dust suction pipe is connected to the dust removal component.

[0029] The mobile chassis includes a drive axle assembly for driving the mobile chassis to travel in a straight direction and a steering axle assembly for driving the mobile chassis to steer. The mobile chassis is used to move an air source assembly, a material supply assembly, a vertical lifting conveyor assembly, and a uniform material distribution mechanism with a dynamic balance arm.

[0030] The beneficial effects of the uniform fabric distribution mechanism with a dynamic balancing arm of the present invention are as follows: The present invention relates to a uniform feeding mechanism with a dynamic balance arm. Its telescopic feed tube can freely switch between a curved shape and a horizontal straight shape. The curved shape enables continuous, closed vertical feeding, avoiding the horizontal grading phenomenon that occurs when conventional grain is thrown into the warehouse. The horizontally straight grain guide component facilitates quick entry and exit of the grain silo through the windows of the flat warehouse, greatly reducing the space occupied by the uniform feeding mechanism, improving the adaptability and application range of the equipment, and also facilitating the quick replacement of the grain guide component along its length within the flat warehouse during loading. The feeding point is located vertically. The grain guiding component is combined with a retractable horizontal expansion pipe. The vertical feeding grain guiding component can store grain and other materials layer by layer from bottom to top into the grain warehouse. The horizontal expansion pipe can feed and store grain at different lateral positions in the grain warehouse, thereby achieving the purpose of uniform grain distribution. This allows new and old materials to be arranged in an orderly manner from the bottom to the top of the silo. When retrieving materials, the old materials are taken out first from the bottom, avoiding the accumulation of old materials that are not removed in time and causing mold in the silo, thus meeting the requirement of uniform grain loading in the grain warehouse.

[0031] The guide frame of the uniform material distribution mechanism with dynamic balance arm achieves smooth sliding through the cooperation of rollers and slide rails; the guide wheel and the guide seat on the telescopic arm are precisely engaged to ensure the stability of the guide rod's movement trajectory; the limit frame provides a rotation fulcrum, so that the guide rod rotates according to the extension and retraction of the telescopic arm, thereby changing the shape of the telescopic material tube to meet different needs of equipment use, and the overall motion is highly accurate and controllable.

[0032] The beneficial effects of the grain pump truck of the present invention are as follows: The grain pump truck of this invention integrates the feeding assembly, air source assembly, vertical lifting conveying pipe assembly, and uniform material distribution mechanism with dynamic balance arm on a mobile chassis. The equipment is integrated into a compact, self-contained system with strong independent operation capability and mobility. It is convenient to use and can be quickly deployed to grain loading operations in different warehouses. Especially when loading grain through the windows of grain warehouses such as flat warehouses, the mobility of this grain pump truck can quickly meet the needs of grain loading by switching to different windows. It can also make full use of the grain storage space in the warehouse and avoid the phenomenon of grain accumulating in local areas of the warehouse and causing the material at the bottom of the warehouse to be compressed and clump together.

[0033] This grain pump truck, by combining a horizontal telescopic conveying pipe assembly and a grain guiding component, effectively avoids the "automatic material grading" phenomenon that occurs in conventional pneumatic conveying equipment's spray-type material distribution at the grain throwing bend during grain entry into the silo (i.e., particles naturally separate horizontally due to their density differences caused by gravity differences during accumulation; the higher the density of the particle material, the greater the corresponding gravity, and the smaller the distance between the material's storage point after landing and the discharge port of the grain throwing bend; conversely, the lower the density of the particle material, the larger the distance between the material's storage point after landing and the discharge port of the grain throwing bend). Secondly, the horizontal telescopic conveying pipe assembly can further change the horizontal position of the grain guiding component relative to the grain silo, enabling rapid and quick material distribution at different positions on the same horizontal direction after entering through a window of the grain silo. In addition, the rotating mechanism can drive the horizontal telescopic conveying pipe assembly and the grain guiding component to rotate, expanding the distribution range of the uniform distribution mechanism with a dynamic balance arm, and evenly distributing the material within the corresponding area of ​​the silo, thereby achieving more uniform material distribution and meeting the purpose of uniform material distribution during grain entry into the silo.

[0034] The grain pump truck adopts a counterweight mechanism that rotates relative to the support frame. This mechanism can efficiently balance the horizontal telescopic conveying pipe assembly during the telescopic process, ensuring that its center of gravity is on the vertical center line of the support frame. It can also lower the overall center of gravity of the grain pump truck, avoiding the phenomenon of being top-heavy and improving the safety of the grain pump truck during use or movement.

[0035] The grain pump truck connects the air inlet and outlet of the feeding assembly to the air source assembly, the vertical lifting conveying pipe assembly, the horizontal telescopic conveying pipe assembly, and the grain guiding component, respectively. The high-pressure gas provided by the air source assembly provides the driving force for the material supplied by the feeding assembly to transport the material to the vertical lifting conveying pipe assembly, the horizontal telescopic conveying pipe assembly, and the grain guiding component. The material is transported in a closed conveying pipe throughout the process, thus avoiding the material being exposed to the outside air and being contaminated by external dust, water mist, and other debris, and also avoiding the waste of material due to spillage. Attached Figure Description

[0036] Figure 1 This is a three-dimensional schematic diagram of the elongated state (operation) of the uniform fabric distribution mechanism with a dynamic balance arm according to an embodiment of the present invention. Figure 2 This is a front view of the contracted state of the uniform fabric distribution mechanism with a dynamic balance arm according to an embodiment of the present invention. Figure 3 for Figure 1 Enlarged view of point A in the middle; Figure 4 for Figure 2 A three-dimensional structural diagram of the grain guiding component in its contracted state; Figure 5 for Figure 3Schematic diagram of the structure of the central guide cylinder; Figure 6 for Figure 3 Schematic diagram of the middle connector; Figure 7 for Figure 3 Schematic diagram of the middle guide frame; Figure 8 for Figure 3 Schematic diagram of the middle limit frame; Figure 9 for Figure 1 Schematic diagram of the structure of the guide seat; Figure 10 This is a three-dimensional structural diagram of the grain pump truck of the present invention in operation. Figure 11 This is a front view of the grain pump truck of the present invention in its retracted state; Figure 12 for Figure 10 Front view of the vertical lifting conveyor assembly; Figure 13 for Figure 12 Sectional view of section AA; Figure 14 for Figure 10 Three-dimensional structural diagram of the stroke source assembly; Figure 15 for Figure 10 3D structural diagram of the central material supply assembly; Figure 16 This is a three-dimensional perspective view of the initial contraction state of the grain pump truck of the present invention; Figure 17 This is a reference diagram showing the operating status of the grain pump truck of the present invention.

[0037] In the diagram: 1. Mounting base; 2. End plate; 3. Guide rod; 4. Slide rail; 5. Hollow cylinder body; 6. Front connecting plate; 7. Rear connecting plate; 8. Hinge shaft; 9. Connecting piece; 10. Circular connecting plate; 11. Limiting frame; 12. Adjusting arm; 13. Horizontal movable tube; 14. Connecting base; 15. Guide wheel; 16. Guide seat; 17. Horizontal fixed tube; 18. Fixed arm; 19. Rotation mechanism; 20. Support frame; 21. Upper connecting bend; 22. Hydraulic mechanism; 23. Drive device; 24. Connecting frame; 25. Counterweight; 26. Mounting plate; 27. Lower bracket; 28. Upper bracket; 29. ​​End support seat; 30. Pin shaft; 31. Connecting support; 32. Mounting frame; 33. Support plate; 34. Guide plate; 35. Inclined plate; 36. 37. Horizontal plate; 38. Vertical baffle; 39. Vertical lifting conveyor pipe assembly; 40. Material feeding assembly; 41. Air source assembly; 42. Mobile chassis; 43. Fixed truss; 44. Vertical fixed pipe; 45. Lifting guide rod; 46. Inner slide rail; 47. Limiting cylinder; 48. Vertical movable pipe; 49. Top truss; 50. Outer slide rail; 51. Lifting drive mechanism; 52. Middle truss; 53. Lifting guide wheel; 54. Lower connecting bend pipe; 55. End connecting plate; 56. Drive axle assembly; 57. Steering axle assembly; 58. Air intake silencer; 59. Air pressure generating device; 60. Pipe silencer; 61. Flexible joint; 62. T-joint; 63. Venturi tube; 64. Material feeding hopper; 65. Airlock; 66. Installation pipe; 67. Dust suction pipe. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1

[0040] See Figure 1 and Figure 2 The uniform feeding mechanism with a dynamic balance arm in this embodiment includes a rotary mechanism 19, a support frame 20, a counterweight mechanism, a horizontal telescopic conveying pipe assembly, and a grain guiding assembly. The support frame 20 is mounted on the rotary mechanism 19; The horizontal telescopic conveying pipe assembly includes an upper connecting bend 21, a horizontal telescopic pipe, and a telescopic arm. The two ends of the upper connecting bend 21 are respectively connected to the horizontal telescopic pipe and the rotary mechanism 19. The other end of the horizontal telescopic pipe is connected to the grain guiding assembly. One end of the telescopic arm is fixed on the support frame 20, and the other end is connected to the horizontal telescopic pipe. The telescopic arm can drive the horizontal telescopic pipe to extend and retract. The grain guiding assembly includes a telescopic material tube, a connector 9, and a guide frame. The inlet end of the telescopic material tube is connected to the end of a horizontal telescopic pipe via the connector 9. The top of its outlet end is slidably connected to the guide frame and can slide relative to the guide frame. The telescopic material tube extends into a curved shape to form a continuous and closed vertical downward material guiding channel, and after retraction, it becomes a horizontal straight line. The other end of the guide frame is connected to a telescopic arm. The counterweight mechanism is connected to the other end of the horizontal telescopic conveying pipe assembly via a rotating shaft and to the support frame 20 via a hydraulic mechanism 22. It can rotate relative to the support frame 20. By controlling the rotation of the counterweight mechanism relative to the support frame 20, the torque of the horizontal telescopic conveying pipe assembly during the telescopic process is balanced, so that the center of gravity of the fabric feeding mechanism is always on the center line of the support frame 20.

[0041] The uniform material distribution mechanism with a dynamic balance arm of the present invention, by employing a deformable grain guiding component, allows the horizontally linear telescopic material pipe to facilitate the rapid entry of grain pump trucks into the grain silos through windows such as flat warehouses. The deformed telescopic material pipe can change the direction of the horizontal movement of grain material flow in the horizontal telescopic pipe, forming a vertically downward material flow. Through the combination of the horizontal telescopic pipe and the telescopic arm, the lateral position of the grain can be adjusted efficiently and quickly, thereby achieving the purpose of uniform material distribution. It also effectively avoids the phenomenon of graded distribution of grain in the horizontal direction after entering the silo in conventional pneumatic conveying equipment (such as the grain pump truck disclosed in CN201810725677.X) that uses a projectile-type material distribution mechanism. Secondly, the counterweight mechanism is rotated (rotational swing) relative to the support frame 20 by the hydraulic mechanism 22. The counterweight mechanism has a small space occupation and can achieve a larger balancing torque with a small displacement. The counterweight position is adjusted in real time to keep the center of gravity of the equipment stable. It can effectively avoid the need for frequent loading and unloading of counterweight blocks required by conventional fixed counterweights. It can also offset the overturning torque changes caused by the extension and retraction of the fabric arm in real time, providing a solid safety guarantee for long-term and large-scale fabric placement operations. In addition, the rotating counterweight mechanism also helps to lower the overall center of gravity of the fabric placement mechanism when it is not in the retracted state, which is beneficial to the movement of the grain pump truck.

[0042] This uniform feeding mechanism with a dynamic balancing arm has a telescopic feed tube that can be bent into a curved shape (such as...). Figure 3 As shown) and horizontal straight lines (such as) Figure 4Switching between the two types (as shown), the curved tube can achieve continuous and closed vertical feeding, avoiding grain spillage and breakage, and also avoiding the phenomenon of material gradation distribution that occurs when feeding grain using existing curved tubes; the horizontal straight telescopic material tube has a small space occupation, making it easy for the entire grain guiding assembly to enter and exit through the window of the flat warehouse, greatly improving the applicability of the equipment.

[0043] See Figure 3 , Figure 4 and Figure 5 The telescopic material tube includes several sequentially hinged guide cylinders and a hinge shaft 8. The guide cylinder includes a hollow material cylinder body 5, a front connecting plate 6, and a rear connecting plate 7. The front and rear ends of the top of the hollow material cylinder body 5 are respectively provided with the front connecting plate 6 and the rear connecting plate 7. Both the front connecting plate 6 and the rear connecting plate are provided with connecting through holes for the hinge shaft 8 to pass through, so that adjacent guide cylinders can rotate relative to each other within a certain angle range, allowing the telescopic material tube as a whole to switch between shrinking into a horizontal straight shape and extending into a curved shape. The front end of the hollow material cylinder body 5 of the last guide cylinder is provided with a mounting plate 26. The two sides of the mounting plate 26 are connected to the mounting base 1. The mounting base 1 is provided with rollers for connecting the guide frame. The rollers are placed in the slide rail 4 of the guide frame and can move along the slide rail 4.

[0044] The number of guide cylinders is 6, and the side inclination angle of the hollow material cylinder body 5 is 15°, so that the adjacent guide cylinders after extension are sealed to each other. The overall telescopic material pipe is bent to form a 90° arc, which transforms the horizontally moving grain material flow in the horizontal telescopic conveying pipe into a vertically downward material flow, thereby realizing vertical downward feeding and avoiding the phenomenon of horizontal graded distribution of materials due to their own weight differences.

[0045] The hollow material cylinder body 5 is a hollow isosceles trapezoid, and its top length is greater than its bottom length. When the hollow material cylinder body 5 is extended into a curved tube shape, adjacent hollow material cylinder bodies 5 can abut against each other to form a continuous and closed material guiding channel, preventing grain leakage and external pollution.

[0046] See Figure 6 The connector 9 is a hollow cylinder. The cross-section of the end of the hollow cylinder connected to the telescopic material tube is square. The top of the hollow cylinder is provided with a front connecting plate 6 that is adapted to the rear connecting plate 7 of the first guide cylinder. The end connected to the horizontal telescopic pipe is provided with a circular connecting plate 10, which has multiple connecting holes.

[0047] See Figure 7The guide frame includes a guide rod 3, an end plate 2, a slide rail 4, a connecting seat 14, and a guide wheel 15. One end of the guide rod 3 is connected to the end plate 2, and the other end is connected to the connecting seat 14. The connecting seat 14 is provided with a guide wheel 15. The slide rail 4 is located on the inner side of the guide rod 3 near the end plate 2 and is in rolling connection with the roller of the telescopic material tube. The guide wheel 15 is locked on the guide seat 16 of the telescopic arm.

[0048] The counterweight mechanism includes a connecting frame 24 and a counterweight block. The counterweight block is connected to the end of the telescopic arm through the connecting frame 24. The middle part of the connecting frame 24 is connected to the middle part of the support frame 20 through a hydraulic mechanism 22. The support frame 20 rotates relative to the hydraulic mechanism 22 through the extension and retraction of the hydraulic mechanism 22.

[0049] The horizontal telescopic pipe includes a horizontal fixed pipe 17 and a horizontal movable pipe 13. The inlet end of the horizontal fixed pipe 17 is fixedly connected to the upper connecting bend 21, and its outlet end is connected to the horizontal movable pipe 13. The horizontal movable pipe 13 is sleeved on the horizontal fixed pipe 17, and its end is connected to the end of the telescopic arm.

[0050] The telescopic arm includes a fixed arm 18, an adjusting arm 12, and a drive device 23. The fixed arm 18 is mounted on the support frame 20, and the adjusting arm 12 is sleeved on the fixed arm 18. The drive device 23 is located at the end of the fixed arm 18 away from the adjusting arm 12. The first end of the adjusting arm 12 is sleeved with the fixed arm 18. The drive device 23 drives the adjusting arm 12 to move axially along the fixed arm 18. The axial movement of the adjusting arm 12 along the fixed arm 18 causes the horizontal movable tube 13 to move axially along the horizontal fixed tube 17 to change the length of the horizontal telescopic pipe. By connecting the horizontal telescopic pipe with the upper connecting bend and the vertical lifting pipe, a material conveying pipeline is formed. The telescopic arm is driven by the drive device 23 to extend and retract. The drive device 23 drives the adjusting arm 12 to move axially along the fixed arm 18, so that the adjusting arm 12 drives the horizontal movable pipe 13 to move axially along the horizontal fixed pipe 17, thereby changing the pipe length of the horizontal telescopic pipe and the lateral position of the discharge port of the material horizontal conveying pipeline formed by the grain guiding component. The pipe length of the horizontal telescopic pipe is adjusted according to different silo widths, so that the discharge port of the grain guiding component feeds material vertically downward to different lateral positions of the silo. When the horizontal telescopic pipe is impacted by high-pressure gas in the pipeline during the adjustment process and during the conveying process, the adjusting arm 12 supports and fixes the horizontal movable pipe 13 of the horizontal telescopic pipe, preventing the horizontal movable pipe 13 from shifting radially and improving the stability of the horizontal telescopic pipe installation.

[0051] See Figure 8The end of the adjusting arm 12 is provided with a limiting frame 11. The limiting frame 11 includes a lower support 27 sleeved on the horizontal telescopic pipe and an upper support 28 connected to the end of the telescopic arm. The upper support 28 is provided with an end support 29 and a connecting support 31. The connecting support 31 is connected to the lower support 27. The end support 29 is provided with a pin 30 that passes through the guide rod 3, and the guide rod 3 can rotate around the pin 30. Thus, when the rear end of the guide rod 3 moves horizontally forward as the telescopic arm extends, its front end is in the guide cylinder. Under its own gravity, it rotates downward, causing the telescopic material tube to extend and form a curved tube shape, creating a continuous and closed vertical downward material channel. When the rear end of the guide rod 3 moves horizontally backward as the telescopic arm retracts, it gradually moves downward after contacting the guide seat 16 on the telescopic arm. Its front end rotates around the end support seat 29, causing the front end of the guide rod 3 to move upward, causing the telescopic material tube to retract and gradually switch to a straight shape, thus satisfying the window of the grain guiding component for entering and exiting the flat warehouse.

[0052] The guide frame achieves smooth sliding through the cooperation of rollers and slide rail 4; the guide wheel 15 and the guide seat 16 on the telescopic arm are precisely engaged to ensure the stable movement trajectory of the guide rod 3; the limit frame 11 provides a fulcrum for rotation, so that the support seat 29 at the opposite end of the guide rod 3 can rotate, and the overall motion control is precise.

[0053] See Figure 1 and Figure 9 The guide seat 16 is symmetrically arranged on the fixed arm 18 of the telescopic arm, and includes a mounting frame 32, a support plate 33 and a guide plate 34. The mounting frame 32 is symmetrically installed on the side of the fixed arm 18 of the telescopic arm. The support plate 33 is L-shaped and fixed on the mounting frame 32. The guide plate 34 is inclinedly arranged on the support plate 33.

[0054] The guide plate 34 includes an inclined plate 35, a horizontal plate 36, and a vertical baffle 37 connected in sequence. The inclined plate 35 is disposed on the horizontal plate of the support plate 33 near the end of the telescopic arm, and the vertical baffle 37 is disposed on the vertical plate of the support plate 33. The guide plate 34 is integrally formed.

[0055] The working principle and usage method of the uniform fabric distribution mechanism with dynamic balancing arm of this invention: When it is necessary to enter or exit the warehouse or change the work position, the telescopic arm retracts backward; the rear end of the guide rod 3 moves horizontally backward accordingly. When the rear end of the guide rod 3 contacts the guide seat 16 on the telescopic arm, it gradually moves downward. Its front end rotates around the end support seat 29, causing the front end of the guide rod 3 to move upward, driving the relative rotation of each section of the guide tube. The telescopic material tube returns to an approximately horizontal straight shape under the constraint of the hinge shaft 8, reducing the overall cross-sectional area and lowering the space occupancy of the grain guiding component. This facilitates the uniform material distribution mechanism with a dynamic balance arm to smoothly pass through the windows of flat warehouses and other grain warehouses to enter the warehouse for grain feeding operations.

[0056] When the grain guiding assembly enters the grain warehouse, the telescopic arm is extended, the adjusting arm 12 moves axially relative to the fixed arm 18, and drives the horizontal movable tube 13 to move axially relative to the horizontal fixed tube 17, thereby adjusting the length of the horizontal telescopic pipe. At the same time, the rear end of the guide rod 3 gradually moves out of the guide seat 16. Due to the gravity of the guide cylinder at the front end of the guide rod 3, the guide rod 3 rotates around the end support seat 29. The rear end of the guide rod 3 rotates upward, while the front end of the guide rod 3 gradually rotates downward. Under the action of their own gravity, each section of the guide cylinder rotates relative to the connecting piece 9 or the previous section of the guide cylinder. The hinged sections of the guide cylinder gradually unfold. The hollow cylinder bodies 5 of the adjacent guide cylinders abut against each other by their inclined sides, forming a continuous, closed arc-shaped (e.g., 1 / 4 arc) vertical channel.

[0057] Grain enters the telescopic feed pipe through the horizontal telescopic pipe via connector 9, and is vertically conveyed downward along the arc-shaped channel to achieve fixed-point feeding. This avoids the phenomenon of graded distribution of grain in the horizontal direction due to density differences when the grain is discharged through the throwing bend under the action of pneumatic conveying.

[0058] This invention features a uniform material distribution mechanism with a dynamic balance arm. The number of guide cylinders can be 5, 8, or 9 sections, and the corresponding side inclination angle of the hollow cylinder body 5 is 18°, 11.25°, or 10°. These changes in technical features can be understood and implemented by those skilled in the art through textual description, and therefore will not be further illustrated with additional drawings.

[0059] Example 2

[0060] See Figure 10-15 A grain pump truck for transporting materials to a silo includes an air source assembly 40 for providing high-pressure gas to drive the material transport, a feeding assembly 39 connected to the air source assembly 40 for feeding materials, a vertical lifting conveying pipe assembly 38 connected to the feeding assembly 39, a uniform material distribution mechanism with a dynamic balance arm as described in Embodiment 1, and a mobile chassis 41. The mobile chassis 41 is used to support and fix the air source assembly 40, the feeding assembly 39, and the vertical lifting conveying pipe assembly 38, and can drive the grain pump truck to move as a whole. The uniform material distribution mechanism with a dynamic balance arm is arranged above the vertical lifting conveying pipe assembly 38 and is connected to the discharge port of the vertical lifting conveying pipe assembly 38.

[0061] See Figure 10-13The vertical lifting conveying pipe assembly 38 includes a lower connecting bend 53, a lifting truss, a vertical telescopic pipe, and a lifting drive mechanism 50. The two ends of the lower connecting bend 53 are respectively connected to the feeding assembly 39 and the vertical telescopic pipe. The vertical telescopic pipe is installed inside the lifting truss, and the end of the vertical telescopic pipe is connected to the rotary mechanism 19. The rotary mechanism 19 is fixed at the top of the lifting truss. The lifting truss is connected to the lifting drive mechanism 50 and is raised and lowered by the extension and retraction of the lifting drive mechanism 50, which in turn drives the vertical telescopic pipe to extend and retract.

[0062] The lifting truss includes a fixed truss 42, a middle truss 51 and a top truss 48. The fixed truss 42 has an inner slide rail 45 inside, and the top truss 48 has an outer slide rail 49 outside. The middle truss 51 has multiple sets of lifting guide wheels 52 symmetrically arranged on both sides. The lifting guide wheels 52 are slidably connected to the inner slide rail 45 and the outer slide rail 49.

[0063] The vertical telescopic pipe includes a vertical fixed pipe 43 and a vertical movable pipe 47. The two ends of the vertical fixed pipe 43 are respectively connected to the lower connecting bend 53 and the vertical movable pipe 47. The two ends of the vertical fixed pipe 43 are provided with end connecting plates 54. A lifting guide rod 44 is provided between the end connecting plates 54. The lifting guide rod 44 is sleeved in the limiting cylinder 46. The limiting cylinder 46 is fixed on the end connecting plate 54.

[0064] like Figure 10 and 14 As shown, the air outlet of the air source assembly 40 is connected to the feeding assembly 39. The air source assembly 40 includes a dustproof and soundproof cover, a pressure generating device 58 for generating high-pressure gas, an air intake silencer 57 connected to the air intake of the pressure generating device 58, and a pipeline silencer 59 connected to the air outlet of the pressure generating device 58. The dustproof and soundproof cover is fitted over the air intake silencer 57, the pressure generating device 58, and the pipeline silencer 59. The air outlet of the pipeline silencer 59 is connected to the air inlet of the feeding assembly 39. The pipeline silencer 59 is used to change the flow direction of the high-pressure gas and reduce the noise at the air outlet of the pressure generating device 58 and the noise generated by the high-pressure gas impacting the pipeline when changing its flow direction.

[0065] The air pressure generating device 58 includes a Roots blower and a drive motor. The intake silencer 57 is sealed to the intake end of the Roots blower, and the outlet end of the Roots blower is connected to the intake end of the pipeline silencer 59. The blower and the motor are connected by a transmission belt fitted on the blower pulley and the motor pulley. A dustproof and soundproof cover is used to cover the blower pulley, the motor pulley and the transmission belt to reduce dust, droplets or other debris from entering the blower pulley and the motor pulley and to reduce the aging and deformation of the transmission belt caused by sunlight, which would affect the transmission between the Roots blower and the drive motor.

[0066] like Figure 14 As shown, in this embodiment, the outlet end of the pipe silencer 59 is sequentially connected to a flexible joint 60, a check valve, a T-joint 61, and a venturi tube 62. The input end of the check valve is connected to the flexible joint 60, and the output end of the check valve is connected to one lateral end of the T-joint 61. The other lateral end of the T-joint 61 is connected to the input end of the venturi tube 62, and the vertical end of the T-joint 61 is used to install a safety valve. The output end of the venturi tube 62 is used to connect to the installation pipe 65 of the feeding assembly 39. The flexible joint 60 flexibly connects the pipe silencer 59 and the installation pipe 65 of the feeding assembly 39. When the high-pressure gas and equipment vibration cause the position of the pipe silencer 59 and / or the installation pipe 65 of the feeding assembly 39 to shift, the flexible joint 60 eliminates the deviation in the docking position between the pipe silencer 59 and the feeding assembly 39, preventing the deviation in the docking position from affecting the sealing effect at the connection. By installing the check valve, material in the installation pipe 65 is prevented from entering the air source assembly 40. When the installation pipe 65 becomes blocked, a large amount of high-pressure gas continues to enter the installation pipe 65, causing excessive pressure inside the installation pipe 65. When the pressure inside the installation pipe 65 becomes excessive, the safety valve installed at the vertical end of the T-joint 61 automatically releases pressure, preventing safety accidents such as pipe bursts caused by excessive pressure inside the installation pipe 65 and the vertical lifting conveying pipe assembly 38. The high-pressure gas has an increased flow velocity after passing through the Venturi tube 62, which improves the conveying efficiency of the pneumatic conveying equipment. Optionally, the outlet end of the pipe silencer 59 is connected in sequence with a check valve, a flexible joint 60, a T-joint 61, and a Venturi tube 62. Optionally, the outlet end of the pipe silencer 59 is connected with a check valve, a flexible joint 60, a T-joint 61, and / or a Venturi tube 62. The T-joint 61 is installed on one side of the output end of the check valve to ensure that when the pressure inside the installation pipe 65 and the vertical lifting conveying pipe assembly 38 becomes excessive, the gas is discharged and pressure is released through the safety valve installed at the vertical end of the T-joint 61.

[0067] See Figure 10 and Figure 15The feeding assembly 39 includes an installation pipe 65, a feed hopper, an airlock 64, and a feeding hopper 63. One end of the installation pipe 65 is connected to the air outlet pipe of the air source assembly 40, and the other end is connected to the lower connecting elbow of the vertical lifting conveying pipe assembly 38. The feed hopper is located on the installation pipe 65, and its inlet is connected to the airlock 64. The airlock 64 is located below the feeding hopper 63, and its inlet is connected to the feeding hopper 63. The airlock 64 is used to transport the material output from the feeding hopper 63 into the feeding hopper and prevent the high-pressure gas in the installation pipe 65 from being discharged from the feeding hopper 63. The material is poured into the feeding hopper 63, passes through the airlock 64 and the feeding hopper in sequence, and enters the installation pipe 65. The large amount of high-pressure gas provided by the air source assembly 40 pushes the material in sequence into the installation pipe 65, the vertical lifting conveying pipe assembly 38, and the horizontal telescopic conveying pipe assembly, and is sprayed out from the grain guiding component into the silo.

[0068] The top of the feeding hopper 63 is provided with a dust suction pipe 66, and the other end of the dust suction pipe 66 is connected to the dust removal component.

[0069] The mobile chassis 41 includes a drive axle assembly 55 for driving the mobile chassis 41 to travel in a straight direction and a steering axle assembly 56 for driving the mobile chassis 41 to steer. The mobile chassis 41 is used to move the entire grain pump truck carrying the air source assembly 40, the feeding assembly 39, the vertical lifting conveying pipe assembly 38, and the uniform material distribution mechanism with a dynamic balance arm.

[0070] The present invention connects the air inlet and outlet of the feeding assembly 39 to the air source assembly 40 and the vertical lifting conveying pipe assembly 38, respectively. The high-pressure gas provided by the air source assembly 40 provides a driving force to the material supplied by the feeder assembly, conveying the material into the vertical lifting conveying pipe assembly 38, the horizontal telescopic conveying pipe assembly, and the grain guiding assembly. The material is conveyed entirely within a closed material conveying pipeline, thus avoiding the material being exposed to the outside air and contaminated by external dust, water mist, and other debris, and preventing material spillage and waste. The material output from the lifting conveyor assembly 38 is evenly distributed into different areas of the silo through the grain guiding component connected to the discharge port of the horizontal telescopic conveyor assembly. This fully utilizes the storage space within the silo and prevents material from accumulating in localized areas, thus avoiding the problem of material agglomeration at the bottom of the silo. The material is laid layer by layer from bottom to top within the silo, ensuring an orderly arrangement of new and old materials from the bottom to the top. When retrieving material, the old material is removed first from the bottom, preventing it from accumulating and becoming moldy. The grain pump truck uses high-pressure gas generated by the air source assembly 40 to provide conveying power to the material conveying pipeline, enabling material transfer. It can be equipped with multiple discharge ports to quickly transfer materials to multiple locations. It boasts advantages such as large conveying capacity, long conveying distance, and high conveying speed. Furthermore, the material operates within a closed pipeline, preventing dust generation and maintaining a clean environment, while also preventing moisture absorption and loss during transport.

[0071] Using the initial state, such as Figure 11 and Figure 16 As shown, the telescopic arm of the horizontal telescopic conveying pipe assembly is in a retracted state, the horizontal movable pipe 13 retracts into the horizontal fixed pipe 17, the grain guiding component is in a horizontal straight line, the counterweight block of the counterweight mechanism rotates downward to a balanced state, and the vertical lifting conveying pipe assembly 38, under the action of the lifting drive mechanism 50, its top truss 48 and middle truss 51 slide down and retract into the fixed truss 42, simultaneously driving the vertical movable pipe 47 to descend and retract into the vertical fixed pipe 43; thereby causing the center of gravity of the grain pump truck to shift downward as a whole, making it easier to move the grain pump truck as a whole by moving the chassis 41.

[0072] During operation preparation, the grain pump truck is first moved to the designated work point by the operation of the mobile chassis 41. Then, the lifting drive mechanism 50 is controlled to move the top truss 48, the middle truss 51, and the vertical movable pipe 47 upwards until the central axis of the horizontal telescopic pipe reaches the center position of the window of the flat warehouse or other grain storage facility. Then, the rotation mechanism 19 is controlled to rotate the horizontal telescopic conveying pipe assembly horizontally by 180°, so that the horizontal telescopic pipe faces away from the air source assembly 40. Then, the drive device 23 is controlled to extend the adjusting arm 12 relative to the fixed arm 18, and simultaneously drive the horizontal movable pipe 13 to extend relative to the horizontal fixed pipe 17. At the same time, the hydraulic mechanism 22 is controlled to drive the connecting frame 24 of the counterweight mechanism to rotate relative to the support frame 20, thereby changing the position of the counterweight block. This ensures the dynamic balance of the material distribution mechanism and prevents safety accidents during the use of the grain pump truck. Figure 10 As shown, when the telescopic arm extends to the corresponding feeding position, the telescopic material tube also moves downward to form a continuous closed bend, which facilitates vertical downward feeding into the flat warehouse.

[0073] See Figure 17 When the grain pump truck is feeding grain, the air pressure generator 58 of the air source assembly 40 is activated, and grain is conveyed to the feeding hopper 63 of the feeding assembly 39. Under the action of the high-pressure airflow generated by the air pressure generator 58, the grain material flows through the lower connecting bend 53, the vertical fixed pipe 43, the vertical movable pipe 47, the upper connecting bend 21, the horizontal fixed pipe 17, the horizontal movable pipe 13, and the grain guiding assembly in sequence, and then enters the grain bin at high speed and continuously. When it is necessary to adjust the grain material feeding position slightly, the extension length of the adjusting arm 12 can be further adjusted by the drive device 23. At the same time, the horizontal telescopic pipe can be controlled to rotate slightly relative to the support frame 20 by the rotation mechanism 19, so that the grain is evenly distributed in the grain bin. Figure 10 and 17 As shown, the grain is fed vertically downwards through the grain guiding component, and there is no horizontal gradation of the grain in the grain silo. The grain is piled up from bottom to top, and the grain distribution is more uniform.

[0074] After the grain loading operation in the designated loading area is completed, the length of the telescopic arm is first adjusted by the drive device 23, causing the grain guiding assembly to gradually switch from a curved tube shape to a horizontal straight shape. Simultaneously, the horizontal movable pipe 13 retracts into the horizontal fixed pipe 17, and the adjusting arm 12 retracts into the fixed arm 18. The hydraulic mechanism 22 is then adjusted to change the position of the counterweight 25 to achieve dynamic balance; that is, the counterweight mechanism rotates downwards relative to the support frame 20. After the telescopic arm retracts to its initial state, the horizontal telescopic conveying pipe assembly is smoothly withdrawn from the grain silo window by controlling the moving chassis 41. Then, the slewing mechanism 19 is controlled to rotate the horizontal telescopic conveying pipe assembly 180° horizontally, so that the horizontal telescopic pipe faces one end of the air source assembly 40. Next, the lifting drive mechanism 50 is controlled to retract the vertical lifting conveying pipe assembly 38 to its initial state (i.e., the top truss 48 and the middle truss 51 slide down and retract into the fixed truss 42, and the vertical movable pipe 47 descends and retracts into the vertical fixed pipe 43), causing the overall center of gravity of the grain pump truck to shift downwards. Figure 11 As shown, the mobile chassis 41 is then controlled to move the grain pump truck to the next work point to carry out another grain storage operation.

[0075] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is only used to illustrate the technical solution of the present invention, and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention are included within the scope of protection of the present invention.

Claims

1. A uniform fabric distribution mechanism with a dynamic balancing arm, characterized in that, Includes a slewing mechanism (19), a support frame (20), a counterweight mechanism, a horizontal telescopic conveying pipe assembly, and a grain guiding assembly; The support frame (20) is mounted on the rotary mechanism (19); The horizontal telescopic conveying pipe assembly includes an upper connecting bend (21), a horizontal telescopic pipe and a telescopic arm. The two ends of the upper connecting bend (21) are respectively connected to the horizontal telescopic pipe and the rotary mechanism (19). The other end of the horizontal telescopic pipe is connected to the grain guiding assembly. One end of the telescopic arm is fixed on the support frame (20), and the other end is connected to the horizontal telescopic pipe. The telescopic arm can drive the horizontal telescopic pipe to extend and retract. The grain guiding assembly includes a telescopic material tube, a connector (9), and a guide frame. The inlet end of the telescopic material tube is connected to the end of the horizontal telescopic pipe through the connector (9). The top of its outlet end is slidably connected to the guide frame and can slide relative to the guide frame. The telescopic material tube extends into a curved tube shape to form a continuous and closed vertical downward material guiding channel. After it retracts, it becomes a horizontal straight line. The other end of the guide frame is connected to the telescopic arm. The counterweight mechanism is connected to the other end of the horizontal telescopic conveying pipe assembly via a rotating shaft and connected to the support frame (20) via a hydraulic mechanism (22). It can rotate relative to the support frame (20). By controlling the rotation of the counterweight mechanism relative to the support frame (20), the torque of the horizontal telescopic conveying pipe assembly during the telescopic process is balanced, so that the center of gravity of the fabric distribution mechanism is always on the center line of the support frame (20).

2. The uniform fabric distribution mechanism with a dynamic balance arm as described in claim 1, characterized in that, The telescopic tube includes several sections of guide cylinders and a hinge shaft (8) that are hinged together in sequence. The guide cylinder includes a hollow tube body (5), a front connecting plate (6), and a rear connecting plate (7). The front and rear ends of the top of the hollow tube body (5) are respectively provided with a front connecting plate (6) and a rear connecting plate (7). Both the front connecting plate (6) and the rear connecting plate are provided with connecting through holes for the hinge shaft (8) to pass through, so that adjacent guide cylinders can rotate relative to each other within a certain angle range, so that the telescopic tube as a whole can switch between shrinking into a horizontal straight shape and extending into a curved shape. The front end of the hollow tube body (5) of the last guide cylinder is provided with a mounting plate (26). The two sides of the mounting plate (26) are connected to the mounting base (1). The mounting base (1) is provided with rollers for connecting the guide frame. The rollers are placed in the slide rail (4) of the guide frame and can move along the slide rail (4).

3. The uniform fabric distribution mechanism with a dynamic balance arm as described in claim 2, characterized in that, The number of the guide cylinders is 5 to 9, and the side inclination angle of the hollow cylinder body (5) is 10 to 18°. The hollow cylinder body (5) is a hollow isosceles trapezoid, and the length of its top is greater than the length of its bottom, so that when the hollow cylinder body (5) is extended into a curved tube shape, adjacent hollow cylinder bodies (5) can abut against each other to form a continuous and closed guide channel.

4. The uniform fabric distribution mechanism with a dynamic balance arm as described in claim 1, characterized in that, The connector (9) is a hollow cylinder. The cross-section of the hollow cylinder connected to the telescopic material pipe is square. The top of the hollow cylinder is provided with a front connecting plate (6) that is compatible with the rear connecting plate (7) of the first guide cylinder. The end connected to the horizontal telescopic pipe is provided with a circular connecting plate (10). The circular connecting plate (10) is provided with multiple connecting holes.

5. The uniform fabric distribution mechanism with a dynamic balance arm as described in claim 1, characterized in that, The guide frame includes a guide rod (3), an end plate (2), a slide rail (4), a connecting seat (14), and a guide wheel (15). One end of the guide rod (3) is connected to the end plate (2), and the other end is connected to the connecting seat (14). The connecting seat (14) is provided with a guide wheel (15). The slide rail (4) is located on the inner side of the guide rod (3) near the end plate (2) and is in rolling connection with the roller of the telescopic material tube. The guide wheel (15) is locked on the guide seat (16) of the telescopic arm. The guide seat (16) is symmetrically arranged on the telescopic arm and includes a mounting frame (32), a support plate (33), and a guide plate (34). The mounting frame (32) is symmetrically installed on the side of the telescopic arm. The support plate (33) is L-shaped and fixed on the mounting frame (32). The guide plate (34) is inclinedly arranged on the support plate (33).

6. The uniform fabric distribution mechanism with a dynamic balance arm as described in claim 1, characterized in that, The counterweight mechanism includes a connecting frame (24) and a counterweight block (25). The counterweight block (25) is connected to the end of the telescopic arm through the connecting frame (24). The middle part of the connecting frame (24) is connected to the middle part of the support frame (20) through a hydraulic mechanism (22). The support frame (20) rotates relative to the hydraulic mechanism (22) through the extension and retraction of the hydraulic mechanism (22).

7. The uniform fabric distribution mechanism with a dynamic balance arm as described in claim 1, characterized in that, The horizontal telescopic pipe includes a horizontal fixed pipe (17) and a horizontal movable pipe (13). The inlet end of the horizontal fixed pipe (17) is fixedly connected to the upper connecting bend (21), and its outlet end is connected to the horizontal movable pipe (13). The horizontal movable pipe (13) is sleeved on the horizontal fixed pipe (17), and its end is connected to the end of the telescopic arm. The telescopic arm includes a fixed arm (18), an adjusting arm (12), and a driving device (23). The fixed arm (18) is mounted on the support frame (20), the adjusting arm (12) is sleeved on the fixed arm (18), and the driving device (23) is located at the end of the fixed arm (18) away from the adjusting arm (12).

8. The uniform fabric distribution mechanism with a dynamic balance arm as described in claim 7, characterized in that, The end of the adjusting arm (12) is provided with a limiting frame (11). The limiting frame (11) includes a lower support (27) sleeved on the horizontal telescopic pipe and an upper support (28) connected to the end of the telescopic arm. The upper support (28) is provided with an end support seat (29) and a connecting support (31). The connecting support (31) is connected to the lower support (27). The end support seat (29) is provided with a pin (30) that passes through the guide rod (3), and the guide rod (3) can rotate around the pin (30).

9. A grain pump truck, characterized in that, The device includes an air source assembly (40) for providing high-pressure gas to drive material conveying, a feeding assembly (39) connected to the air source assembly (40) for feeding material, a vertical lifting conveying pipe assembly (38) connected to the feeding assembly (39), a uniform material distribution mechanism with a dynamic balance arm as described in any one of claims 1 to 8, and a mobile chassis (41), the mobile chassis (41) for supporting and fixing the air source assembly (40), the feeding assembly (39) and the vertical lifting conveying pipe assembly (38), the uniform material distribution mechanism with a dynamic balance arm being disposed above the vertical lifting conveying pipe assembly (38) and communicating with the outlet of the vertical lifting conveying pipe assembly (38).

10. The grain pump truck as described in claim 9, characterized in that, The vertical lifting conveying pipe assembly (38) includes a lower connecting bend (53), a lifting truss, a vertical telescopic pipe, and a lifting drive mechanism (50); the two ends of the lower connecting bend (53) are respectively connected to the feeding assembly (39) and the vertical telescopic pipe, the vertical telescopic pipe is set inside the lifting truss, and the end of the vertical telescopic pipe is connected to the rotary mechanism (19), the rotary mechanism (19) is fixed at the top of the lifting truss; the lifting truss is connected to the lifting drive mechanism (50) and is lifted and lowered by the extension and retraction of the lifting drive mechanism (50), while simultaneously driving the vertical telescopic pipe to extend and retract; The lifting truss includes a fixed truss (42), a middle truss (51) and a top truss (48). The fixed truss (42) has an inner slide rail (4) inside, and the top truss (48) has an outer slide rail (4) outside. The middle truss (51) has multiple sets of lifting guide wheels (52) symmetrically arranged on both sides. The lifting guide wheels (52) are slidably connected to the inner slide rail (4) and the outer slide rail (4). The vertical telescopic pipe includes a vertical fixed pipe (43) and a vertical movable pipe (47). The two ends of the vertical fixed pipe (43) are connected to the lower connecting bend (53) and the vertical movable pipe (47) respectively. The two ends of the vertical fixed pipe (43) are provided with end connecting plates (54). A lifting guide rod (44) is provided between the end connecting plates (54). The lifting guide rod (44) is sleeved in the limiting cylinder (46). The limiting cylinder (46) is fixed on the end connecting plate (54).

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