Adaptive floating lifting harvester structure

Abstract

The structure of the adaptive floating lifting harvester includes a travel control mechanism, a collecting base on which a collecting umbrella is mounted and aligned with the tree trunk, and a conveyor belt that transfers the fruit from the collecting umbrella upward. The collecting base is arranged in front of the travel control mechanism and in contact with the ground. The conveyor belt is tilted, with its upper end hinged to the travel control mechanism and its lower end fixed to the collecting base. A support and lifting assembly is connected between the travel control mechanism and the conveyor belt to support the tilting of the conveyor belt. The support and lifting assembly includes a cylinder fixed to the travel control mechanism and extending forward, and a connecting rod hinged between the cylinder and the conveyor belt. The connecting rod and the cylinder form an angle of less than 90 degrees. The connecting rod drives the conveyor belt to swing as the cylinder expands and contracts to adjust the conveyor belt's tilt angle. When the cylinder is not extended, the connecting rod swings with the upward movement of the collecting base to adjust the distance between the cylinder and the conveyor belt to adapt to changes in the conveyor belt's tilt angle. The present invention has high travel efficiency and is easy to inspect and maintain.

Description

Technical Field

[0001] The invention relates to an adaptive floating lifting harvester structure, belonging to the technical field of fruit harvesters. Background Art

[0002] Harvesting with mechanical harvesters in orchards can greatly improve the harvesting efficiency. However, the use and promotion of harvesters are restricted to a certain extent by factors such as the undulating terrain. In order to adapt to the uneven terrain changes in the orchard, CN112088654A discloses a fruit harvester, in which a lifting component for changing the inclination angle of the belt fruit output mechanism is installed on the crawler walking mechanism. The belt fruit output mechanism is hinged to the lifting component, so that the fruit collection mechanism can automatically adjust the undulation with the change of the ground height, preventing the chassis from being inserted into the soil, meeting the harvesting needs of forest fruits in bumpy mountainous areas and hills, and improving the terrain adaptability and practicality of the whole machine. CN111011002A discloses a fruit harvester, in which a U-shaped positioning chassis moves through the drive of a centering component, and can be extended and retracted forward and backward, raised and lowered, and swung left and right. When the running mechanism cannot get close to the tree trunk, the movement of the centering component enables the receiving mechanism to be effectively positioned on the tree trunk, thereby extending the movement range of the carrying mechanism, reducing the running mechanism's demand for terrain, and ensuring that the carrying mechanism can select the most appropriate position according to the position, thickness, and height of the tree trunk and effectively position itself on the tree trunk, thereby meeting the demand for vibration-dropped and collected fruit in bumpy mountainous areas and hills.

[0003] In the first type of harvester, the fruit collecting mechanism rises and falls with the movement of the lifting assembly, adjusting the fluctuation to adapt to the terrain. The lifting mechanism is controlled by an oil cylinder, and manual control of the oil cylinder extension and retraction is required during the operation of the harvester to make the fruit collecting mechanism rise and fall. The second type of harvester achieves the vibration collection requirement of fruit on uneven terrain by adjusting the position of the U-shaped positioning chassis. However, during operation in the orchard, the harvester needs to move back and forth in the forest to pick fruit from trees in different locations. If the fruit collecting chassis and fruit conveyor belt can only be adjusted by manual control during operation, the adjustment efficiency will be very low, which will seriously affect the operation efficiency of the harvester. In addition, the frequency of manual control will be quite high, which is very labor-intensive. The harvester's adaptability to the ground needs to be improved. The present invention is a further improvement on the above two harvesters to improve the operation efficiency of the harvester, reduce the frequency of manual control, and improve the harvester's adaptability to the ground. Summary of the Invention

[0004] The adaptive floating and lifting harvester structure provided by the present invention forms an adaptive floating and lifting of the collecting chassis and the conveyor belt during the movement of the harvester, adapts to the height fluctuations of the terrain, improves the harvester's adaptability to the ground, improves the harvester's travel efficiency, and also reduces the frequency of manual control of the harvester during its movement, reduces labor intensity, facilitates the inspection and maintenance of the hydraulic system, and improves the practicality of the harvester.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] The adaptive floating lifting harvester structure includes a walking control mechanism for controlling the movement of the harvester, a collecting base on which a collecting umbrella is installed and aligned with the tree trunk, and a conveyor belt for transferring the fruit from the collecting umbrella upward. The collecting base is arranged in front of the walking control mechanism and in contact with the ground. The conveyor belt is tilted, and the upper end is hinged to the walking control mechanism and the lower end is fixed to the collecting base. A supporting lifting assembly for supporting the tilting of the conveyor belt is connected between the walking control mechanism and the conveyor belt. It is characterized in that: the supporting lifting assembly includes an oil cylinder fixed on the walking control mechanism and extending forward, and a connecting rod hinged between the oil cylinder and the conveyor belt. An angle less than 90 degrees is formed between the connecting rod and the oil cylinder. The connecting rod drives the conveyor belt to swing with the extension and contraction of the oil cylinder to adjust the inclination angle of the conveyor belt. When the oil cylinder is not extended, the connecting rod swings with the upward movement of the collecting base to adjust the distance between the oil cylinder and the conveyor belt to adapt to changes in the inclination angle of the conveyor belt.

[0007] Preferably, the oil cylinder is tilted upward and located below the back of the conveyor belt, the connecting rod is in an inverted L shape, the lower end of the connecting rod is hinged to the telescopic end of the oil cylinder, and the upper end is hinged to the back of the conveyor belt. When the oil cylinder is not extended, the collecting base is tilted downward by 5 to 10 degrees.

[0008] Preferably, a hinge block hinged to the upper end of the connecting rod and a contact block located on the lower side of the hinge block are fixed to the back of the conveyor belt. The contact block rests on the connecting rod under the action of the gravity of the conveyor belt, so that the connecting rod is parallel to the conveyor belt.

[0009] Preferably, the front bottom of the collecting base is equipped with a grounding roller in contact with the ground, the bottom of the grounding roller is lower than the bottom of the collecting base, and there are two grounding wheels, which are aligned at the front end of the collecting base.

[0010] Preferably, the walking control mechanism includes a chassis track, a frame mounted on the walking track, a hydraulic system mounted on the frame, an upper cover plate fixed to the frame and covering the hydraulic system, a left side plate, a left hydraulic oil tank, a right side plate and a right hydraulic oil tank, the left side plate and the right side plate are symmetrically hinged on both sides of the frame, the left hydraulic oil tank and the right hydraulic oil tank are symmetrically hinged on both sides of the frame, the left side plate and the left hydraulic oil tank form a double-door structure, the right side plate and the right hydraulic oil tank also form a double-door structure, the hydraulic system is arranged between the two double-door structures, and when the two double-door structures are closed, they are spliced ​​with the cover plate to surround the hydraulic system.

[0011] Preferably, the edges of the left and right side panels both have clamped edges, the left and right hydraulic oil tanks have clamping edges corresponding to the clamped edges, and the clamping edges are equipped with closing bolts that can be connected to the frame. When the double-door structure is closed, the clamping edges are pressed on the clamped edges and the closing bolts are screwed into the frame.

[0012] Preferably, both the left and right hydraulic oil tanks have system connectors, and both the left and right hydraulic oil tanks are hinged to the frame through hinges. A hydraulic rotary joint is installed on the hinge shaft of the hinge. The hydraulic rotary joint connects the system connector and the hydraulic system, forming a separate connection between the hydraulic system and the left and right hydraulic oil tanks.

[0013] Preferably, both the left and right hydraulic oil tanks have oil tank joints, and the hinge shaft is also equipped with a junction box swivel joint connected to the oil tank joint. The junction box swivel joints on the two hinge shafts are connected to form a connection between the left and right hydraulic oil tanks.

[0014] Preferably, the upper and lower ends of the hinge shaft are respectively provided with threaded sealing holes arranged along the axial direction and sealed by threaded plugs, the coupling box rotary joint is connected to the threaded sealing hole at the lower end of the hinge shaft, and the hydraulic rotary joint is connected to the threaded sealing hole at the upper end of the hinge shaft. The coupling box rotary joint and the hydraulic rotary joint have the same structure, and are both composed of two connecting heads sleeved on the chain hinge shaft. The connecting head includes a connecting sleeve sleeved on the chain hinge shaft and an oil pipe sleeve head that is connected to the connecting sleeve and is integrally formed. The axial direction of the oil pipe sleeve head is perpendicular to the axial direction of the connecting sleeve. The connecting sleeve is sleeved outside the threaded sealing hole and a through hole that is coaxially connected to the oil pipe sleeve head is provided on the threaded sealing hole.

[0015] Preferably, annular sealing grooves are respectively formed at the upper end and the lower end of the inner wall of the connecting sleeve, and a sealing ring is press-fitted into the annular sealing groove, and the sealing ring is tightened on the hinge shaft.

[0016] The beneficial effects of the invention are:

[0017] The present invention provides an adaptive floating lifting harvester structure in which the upper end of the conveyor belt is hinged to the travel control mechanism and the lower end is fixed to the collecting base. Under the action of the conveyor belt's gravity, the connecting rod is pressed by the conveyor belt and does not form an angle with the conveyor belt, but forms an angle with the oil cylinder. When the oil cylinder is extended, it pushes the connecting rod and the conveyor belt to swing upward synchronously to adjust the inclination angle of the conveyor belt and reduce the angle between the oil cylinder and the connecting rod. When the harvester is in the running state with the oil cylinder not extended, when the ground on which the collecting base is located is higher than the ground on which the travel control mechanism is located, the collecting base will move upward due to the change in ground height, causing the conveyor belt to swing upward, which in turn drives the connecting rod to swing upward, forming an angle between the conveyor belt and the connecting rod and increasing the angle between the connecting rod and the oil cylinder to increase the distance between the conveyor belt and the oil cylinder, thereby adapting to the change in the inclination angle of the conveyor belt. This allows the collecting base and the conveyor belt to adaptively float and rise during the operation of the harvester, adapt to the height fluctuations of the terrain, improve the harvester's adaptability to the ground, and improve the harvester's travel efficiency. It also reduces the frequency of manual operation during the operation of the harvester, reducing labor intensity.

[0018] When the oil cylinder is not extended, the collecting base is tilted downward by 5 to 10 degrees, so that the collecting umbrella installed on the collecting base is also tilted downward by 5 to 10 degrees when the oil cylinder is not extended. When the oil cylinder is extended or the collecting base encounters an uphill surface, the collecting base moves upward, and the conveyor belt swings upward. The downward tilt angle of the collecting base will decrease, and the downward tilt angle of the collecting umbrella deployed on the collecting base will decrease synchronously, which is just right for fine-tuning the posture of the collecting umbrella. When the oil cylinder is extended or the collecting base moves to the uphill surface, the collecting umbrella will form a good unfolding and collecting posture, and will not be skewed due to the slope of the ground, affecting the collection effect.

[0019] A grounding roller is provided at the front end of the collecting base. The grounding roller contacts the ground, thereby reducing the contact friction between the collecting base and the ground and reducing the resistance of the collecting base to the forward movement. When the collecting base moves to the uphill surface, the grounding wheel moves upward easily with the help of the forward walking power, driving the conveyor belt to swing upward, thereby improving the ability of the collecting base and the conveyor belt to adapt to the terrain, improving the walking efficiency of the harvester and reducing energy consumption.

[0020] The left hydraulic oil tank and the left side plate form a double-door structure, and the right hydraulic oil tank and the right side plate also form a double-door structure. The hydraulic system is exposed by opening the double-door structure, which facilitates the inspection and maintenance of the hydraulic system and improves the practicality of the harvester. A swivel joint is installed on the hinge of the articulated hydraulic oil tank to realize the connection between the left and right hydraulic oil tanks and the hydraulic system, as well as the connection between the left and right hydraulic oil tanks. On the basis of ensuring that the hydraulic oil tank can be rotated, the swivel joint is used as an oil pipe adapter to reduce the length of the oil pipes between the left and right hydraulic oil tanks and between the hydraulic oil tank and the hydraulic system, avoid lengthening and bending of the oil pipes due to the rotation of the hydraulic oil tank, and improve the oil guide efficiency and oil guide reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the adaptive floating lifting harvester of the present invention.

[0022] Figure 2 Schematic diagram of the harvester structure that adaptively floats and rises when the cylinder is extended.

[0023] Figure 3 This is a schematic diagram of the assembly of a harvester structure that adaptively floats and rises when the collecting base moves upward.

[0024] Figure 4 Schematic diagram of the walking control mechanism.

[0025] Figure 5 The diagram is a schematic diagram of the travel control mechanism when both double-door opening structures are open.

[0026] Figure 6 Another schematic diagram of the travel control mechanism when both double-door opening structures are open.

[0027] Figure 7 Schematic diagram of the hinged connection of the hydraulic oil tank to the frame.

[0028] Figure 8 This is a cross-sectional view of the hydraulic swivel joint and the junction box swivel joint installed on the chain hinge shaft.

[0029] Figure 9 Schematic diagram of the hinge axis.

[0030] Figure 10 A schematic diagram of the connector. DETAILED DESCRIPTION

[0031] The following combination Figures 1 to 10 The embodiments of the present invention are described in detail.

[0032] The adaptive floating lifting harvester structure includes a walking control mechanism 1 for controlling the movement of the harvester, a collecting base 2 on which a collecting umbrella is installed and aligned with the tree trunk, and a conveyor belt 3 for transferring the fruit from the collecting umbrella upward. The collecting base 2 is arranged in front of the walking control mechanism 1 and in contact with the ground. The conveyor belt 3 is tilted, and the upper end is hinged to the walking control mechanism 1 and the lower end is fixed to the collecting base 2. A supporting lifting component 4 that supports the oblique setting of the conveyor belt 3 is connected between the walking control mechanism 1 and the conveyor belt 3, and is characterized in that: the supporting lifting component 4 includes an oil cylinder 5 fixed on the walking control mechanism 1 and extending forward, and a connecting rod 6 hinged between the oil cylinder 5 and the conveyor belt 3, an angle of less than 90 degrees is formed between the connecting rod 6 and the oil cylinder 5, and the connecting rod 6 drives the conveyor belt 3 to swing with the extension and contraction of the oil cylinder 5 to adjust the inclination angle of the conveyor belt 3. When the oil cylinder is not extended, the connecting rod 6 swings with the upward movement of the collecting base 2 to adjust the distance between the oil cylinder 5 and the conveyor belt 3 to adapt to the change in the inclination angle of the conveyor belt 3.

[0033] In the above-mentioned adaptive floating lifting harvester structure, the upper end of the conveyor belt 3 is hinged to the walking control mechanism 1, and the lower end is fixed to the collecting base 2. Under the action of the gravity of the conveyor belt 3, the connecting rod 6 is pressed by the conveyor belt 3, and no angle is formed between it and the conveyor belt 3, but an angle is formed between it and the oil cylinder. At this time, it is equivalent to folding the oil cylinder 5, the connecting rod 6 and the conveyor belt 3. When the oil cylinder is extended, it will push the connecting rod 6 and the conveyor belt 3 to swing upward synchronously and drive the collecting base 2 to rise, so as to adjust the inclination angle of the conveyor belt 3 and make the angle between the oil cylinder 5 and the connecting rod 6 smaller; in the walking state of the harvester without the oil cylinder extended, when the ground where the collecting base 2 is located is higher than the ground where the walking control mechanism 1 is located, that is, when the collecting base 2 encounters an uphill surface, as shown in FIG. Figure 3 As shown, the collecting base 2 will move upward due to the change in ground height, causing the conveyor belt 3 to swing upward, which will drive the connecting rod 6 to swing upward, forming an angle between the conveyor belt 3 and the connecting rod 6 and increasing the angle between the connecting rod 6 and the oil cylinder 5. At this time, it is equivalent to the folding and stretching of the oil cylinder 5, the connecting rod 6 and the conveyor belt 3, so as to increase the distance between the conveyor belt 3 and the oil cylinder 5, adapt to the change in the inclination angle of the conveyor belt 3, and form the collecting chassis 2 and the conveyor belt 3 during the walking process of the harvester. Adapt to the height fluctuations of the terrain, improve the harvester's adaptability to the ground, improve the harvester's walking efficiency, and also reduce the frequency of manual control of the harvester during walking, reducing labor intensity.

[0034] The oil cylinder 5 is tilted upward and located below the back of the conveyor belt 3. The connecting rod 6 is in an inverted L-shape, with its lower end hinged to the telescopic end of the oil cylinder 5 and its upper end hinged to the back of the conveyor belt 3. When the oil cylinder 5 is not extended, the collection base 2 is tilted downward by 5 to 10 degrees. When the oil cylinder 5 is not extended, the collection base 2 is tilted downward by 5 to 10 degrees, so that the collection umbrella (not shown in the accompanying drawings) mounted on the collection base 2 is also tilted downward by 5 to 10 degrees when the oil cylinder 5 is not extended. When the oil cylinder 5 is extended or the collection base 2 encounters an uphill surface, the collection base 2 moves upward, and the conveyor belt 3 swings upward. The downward tilt angle of the collection base 2 decreases, and the downward tilt angle of the collection umbrella deployed on the collection base 2 also decreases simultaneously, which fine-tunes the posture of the collection umbrella. When the oil cylinder 5 is extended or the collection base 2 moves to the uphill surface, the collection umbrella will adopt a perfect deployed collection posture, and will not be skewed by the slope of the ground, affecting the collection effect.

[0035] Among them, the back of the conveyor belt 3 is fixed with a hinge block 31 hinged to the upper end of the connecting rod 6 and a contact block 32 located on the lower side of the hinge block 31. The contact block 32 is pressed against the connecting rod 6 by the gravity of the conveyor belt 3, so that the connecting rod 6 is parallel to the conveyor belt 3. Under the action of the gravity of the conveyor belt 3, the connecting rod 6 is pressed by the conveyor belt 3. Through the support of the hinge block 31 and the contact block 32, no angle is formed between the connecting rod 6 and the conveyor belt 3. The two are parallel. An angle is formed between the connecting rod 6 and the oil cylinder 5. At this time, it is equivalent to folding the oil cylinder 5, the connecting rod 6 and the conveyor belt 3. When the oil cylinder is extended, the connecting rod 6 transmits the thrust to the contact block 32, pushing the conveyor belt 3 to swing upward, and the angle between the conveyor belt 3 and the horizontal direction is reduced. Under the action of the gravity of the conveyor belt 3, the connecting rod 6 does not form an angle with the conveyor belt 3 at this time. The two remain parallel. Therefore, the angle between the connecting rod 6 and the horizontal direction is synchronously reduced, so that the angle between the connecting rod 6 and the oil cylinder 5 is reduced. Figure 3 As shown, when the harvester is moving and the cylinder is not extended, when the collecting base encounters an uphill ground, it will move upward, driving the conveyor belt 3 to swing upward, and pulling the connecting rod 6 to swing. At this time, the conveyor belt 3 and the connecting rod 6 will form an angle, and the angle between the connecting rod 6 and the cylinder 5 will increase, which is equivalent to the folding and stretching of the cylinder 5, the connecting rod 6 and the conveyor belt 3 to increase the distance between the conveyor belt 3 and the cylinder 5 to adapt to the change in the inclination angle of the conveyor belt 3.

[0036] The front bottom of the collecting base 2 is provided with a ground contacting roller 7, the bottom of which is lower than the bottom of the collecting base 2, and there are two ground contacting rollers 7, which are aligned at the front end of the collecting base 7. When the oil cylinder is not extended, the collecting base 2 tilts forward, and the front end is at the lowest position. The ground contacting roller 7 is provided at the front end of the collecting base 2, and the ground contacting roller 7 is in contact with the ground, which reduces the contact friction between the collecting base 2 and the ground, reduces the resistance of the collecting base 2 to the forward movement, improves the speed and efficiency of the harvester, and reduces energy consumption. Figure 3As shown, when the collecting base 2 moves to the uphill surface, the ground-engaging wheels move upward easily with the help of the forward walking power, driving the conveyor belt 3 to swing upward, so as to quickly and smoothly pull apart the folding structure of the oil cylinder 5, the connecting rod 6 and the conveyor belt 3, adapt to the change of the inclination angle of the conveyor belt 3, improve the ability of the collecting base 2 and the conveyor belt 3 to adapt to the terrain, improve the walking efficiency of the harvester, and reduce energy consumption.

[0037] Preferably, the walking control mechanism 1 includes a chassis track 8, a frame 9 mounted on the walking track 8, a hydraulic system 10 mounted on the frame 9, an upper cover plate 11 fixed to the frame 9 and covering the hydraulic system 10, a left side plate 12, a left hydraulic oil tank 13, a right side plate 14 and a right hydraulic oil tank 15. The left side plate 12 and the right side plate 14 are symmetrically hinged on both sides of the frame 9, and the left hydraulic oil tank 13 and the right hydraulic oil tank 15 are symmetrically hinged on both sides of the frame 9. The left side plate 12 and the left hydraulic oil tank 13 form a double-door structure, and the right side plate 14 and the right hydraulic oil tank 15 also form a double-door structure. The hydraulic system 10 is arranged between the two double-door structures. When the two double-door structures are closed, they are spliced ​​with the cover plate 11 to surround the hydraulic system 10. The left hydraulic oil tank 13 and the left side plate 12 form a double-door structure, and the right hydraulic oil tank 15 and the right side plate 14 also form a double-door structure. The hydraulic system 10 is exposed by opening the double-door structure, which facilitates the inspection and maintenance of the hydraulic system 10 and improves the practicality of the harvester.

[0038] The edges of the left and right side panels are each provided with a pressed edge 16, and the left and right hydraulic oil tanks are provided with a pressing edge 17 corresponding to the pressed edge. Closing bolts 18 that can be connected to the frame are mounted on the pressing edge 17. When the double-door structure is closed, the pressing edge 17 presses against the pressed edge 16, and the closing bolts 18 are screwed into the frame. The pressing edge 17 compresses the pressed edge 16, and the closing bolts 18 are connected to the frame, so that the double-door structure will not open automatically when closed, and will remain closed. The double-door structure, consisting of the side panels and hydraulic oil tank, can only be opened by manually unscrewing the closing bolts 18. This effectively prevents the double-door structure from opening automatically when the harvester is moving or operating, thereby improving structural reliability.

[0039] Among them, the left and right hydraulic oil tanks are both provided with a system connector 19, and both the left and right hydraulic oil tanks are hinged to the frame 9 through a hinge 20. A hydraulic rotary joint 22 is installed on the hinge shaft 21 of the hinge 20. The hydraulic rotary joint 22 connects the system connector 19 and the hydraulic system 10, forming a connection between the hydraulic system 10 and the left and right hydraulic oil tanks respectively. The left hydraulic oil tank 13 and the right hydraulic oil tank 15 can rotate on the frame 9, and the left hydraulic oil tank 13 and the right hydraulic oil tank 15 need to be connected to the hydraulic system 10. If the hydraulic oil tank and the hydraulic system are directly connected through an oil pipe, the length of the oil pipe needs to be increased to accommodate the rotation of the hydraulic oil tank. When the oil tank is not rotating and is used normally, the oil pipe is too long and will take up a certain amount of space. It is also easy to bend and affect the oil flow efficiency. In order to reduce the length of the oil pipe and prevent the oil pipe from bending, a hydraulic rotary joint 22 is formed between the system connector 19 of the hydraulic oil tank and the hydraulic system 10. The hinge shaft 21 remains in position during the rotation of the oil tank, that is, the position of the hydraulic swivel joint 22 remains unchanged, so that the oil pipe between the hydraulic swivel joint 22 and the system joint 19 is shorter, effectively reducing the space occupied by the oil pipe. The oil pipes on the hydraulic swivel joint 22 and the system joint 19 will cover the hydraulic oil tank and rotate synchronously with the oil tank. The oil pipe between the hydraulic system 10 and the hydraulic swivel joint 22 is also shorter, avoiding the oil pipe from being pulled or bent as the hydraulic oil tank rotates, which can effectively prevent the oil pipe from bending, ensure oil guide efficiency, and improve the reliability of the hydraulic transmission.

[0040] Among them, both the left and right hydraulic oil tanks have oil tank joints 23, and the hinge shaft 21 is also equipped with a coupling swivel joint 24 connected to the oil tank joint 23. The coupling swivel joints 24 on the two hinge shafts 21 are connected to form a connection between the left and right hydraulic oil tanks. The oil tank joint 23 is used to connect the left hydraulic oil tank and the right hydraulic oil tank, so that one side of the hydraulic oil tank sucks oil and the other side of the hydraulic oil tank discharges oil, so that the left and right hydraulic oil tanks and the hydraulic system 10 form a hydraulic circuit. Since the two hydraulic oil tanks are rotatable, in order to reduce the length of the oil pipe, a coupling swivel joint 24 is used to connect the two hydraulic oil tanks. The coupling swivel joint 24 on the left hydraulic oil tank and the coupling swivel joint 24 on the right hydraulic oil tank are connected by an oil pipe, and the coupling swivel joint 24 and its corresponding oil tank joint 23 are connected by a conduit, that is, the connection between the two hydraulic oil tanks is formed, and the oil pipe between the two coupling swivel joints 24 can be protected and immovable. The oil pipe between the coupling swivel joint 24 and the tank joint 23 is covered on the hydraulic oil tank and rotates synchronously with the tank, reducing the length of the oil pipe and avoiding the oil pipe being pulled or bent with the rotation of the hydraulic oil tank. This can effectively prevent the oil pipe from bending, ensure oil guide efficiency, and improve the reliability of the hydraulic transmission.

[0041] A swivel joint is installed on the hinge 20 of the articulated hydraulic oil tank to realize the connection between the left and right hydraulic oil tanks and the hydraulic system 10, as well as the connection between the left and right hydraulic oil tanks. On the basis of ensuring that the hydraulic oil tank can be rotated, the swivel joint is used as an oil pipe adapter to reduce the length of the oil pipes between the left and right hydraulic oil tanks and between the hydraulic oil tank and the hydraulic system 10, avoid lengthening and bending of the oil pipes caused by the rotation of the hydraulic oil tank, and improve the oil guide efficiency and oil guide reliability.

[0042] Among them, the upper and lower ends of the hinge shaft 21 are respectively provided with threaded sealing holes 25 arranged along the axial direction and sealed by threaded plugs. The junction box rotary joint 24 is connected to the threaded sealing hole 25 at the lower end of the hinge shaft 21, and the hydraulic rotary joint 22 is connected to the threaded sealing hole 25 at the upper end of the hinge shaft 21. The junction box rotary joint 24 and the hydraulic rotary joint 22 have the same structure, and are both composed of two connecting heads 26 sleeved on the chain hinge shaft 21. The connecting head 26 includes a connecting sleeve 27 sleeved on the chain hinge shaft 21 and an oil pipe sleeve head 28 connected to the connecting sleeve 27 and integrally formed. The axial direction of the oil pipe sleeve head 28 is perpendicular to the axial direction of the connecting sleeve 27. The connecting sleeve 27 is sleeved outside the threaded sealing hole 25 and a through hole 29 coaxially connected to the oil pipe sleeve head 28 is provided on the threaded sealing hole 25. The two connectors 26 form a manifold swivel joint 24 or a hydraulic swivel joint 22. The oil pipe sleeve 28 in the connector 26 is connected to the oil pipe. The oil pipe sleeve 28 and the threaded sealing hole 25 of one connector are connected with the oil pipe sleeve 28 of the other connector to form a C-shaped oil guide path. That is to say, the oil pipe sleeves 28 of the two connectors 26 are connected through the threaded sealing hole 25 to form a swivel joint, avoiding the direct connection of the joints of the two hydraulic oil tanks with the oil pipe and the direct connection of the hydraulic oil tank with the hydraulic system with the oil pipe, thereby avoiding the problem of lengthening and bending of the oil pipe caused by the rotation of the hydraulic oil tank, thereby improving practicality.

[0043] Annular sealing grooves 271 are formed at the upper and lower ends of the inner wall of the connecting sleeve 27. Sealing rings 30 are press-fitted into the annular sealing grooves 271 and tightened around the hinge shaft 21. The sealing rings seal the connection sleeve 27 and the hinge shaft 21, preventing leakage of hydraulic oil and improving the oil-guiding reliability of the rotary joint.

[0044] The above fully describes the technical solutions of the embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the embodiments described are only part of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

Claims

1. An adaptive floating lifting harvester structure includes a travel control mechanism that controls the harvester's movements, a collecting base on which a collecting umbrella is mounted and aligned with the tree trunk, and a conveyor belt that transports the fruit from the collecting umbrella upward. The collecting base is located in front of the travel control mechanism and contacts the ground. The conveyor belt is tilted, with its upper end hinged to the travel control mechanism and its lower end fixed to the collecting base. A support and lifting assembly that supports the tilting of the conveyor belt is connected between the travel control mechanism and the conveyor belt. The following features are present: The support and lifting assembly includes a cylinder fixed to the travel control mechanism and extending forward, and a connecting rod hinged between the cylinder and the conveyor belt. The connecting rod and the cylinder form an angle of less than 90 degrees. The connecting rod drives the conveyor belt to swing as the cylinder extends and retracts to adjust the inclination angle of the conveyor belt. When the cylinder is not extended, the connecting rod swings as the collection base moves upward to adjust the distance between the cylinder and the conveyor belt to adapt to changes in the inclination angle of the conveyor belt. The oil cylinder is tilted upward and located below the back of the conveyor belt. The connecting rod is in an inverted L shape. The lower end of the connecting rod is hinged to the telescopic end of the oil cylinder, and the upper end is hinged to the back of the conveyor belt. When the oil cylinder is not extended, the collection base is tilted downward by 5 to 10 degrees. The back of the conveyor belt is fixed with a hinge block hinged to the upper end of the connecting rod and a contact block located on the lower side of the hinge block. The contact block presses against the connecting rod under the action of the gravity of the conveyor belt, so that the connecting rod is parallel to the conveyor belt. The front bottom of the collecting base is provided with a grounding roller in contact with the ground. The bottom of the grounding roller is lower than the bottom of the collecting base. There are two grounding wheels which are aligned at the front end of the collecting base.

2. The self-adaptive floating lifting harvester structure according to claim 1 is characterized in that: The walking control mechanism includes a chassis track, a frame mounted on the walking track, a hydraulic system mounted on the frame, an upper cover plate fixed to the frame and covering the hydraulic system, a left side plate, a left hydraulic oil tank, a right side plate and a right hydraulic oil tank. The left side plate and the right side plate are symmetrically hinged on both sides of the frame, and the left hydraulic oil tank and the right hydraulic oil tank are symmetrically hinged on both sides of the frame. The left side plate and the left hydraulic oil tank form a double-door structure, and the right side plate and the right hydraulic oil tank also form a double-door structure. The hydraulic system is arranged between the two double-door structures. When the two double-door structures are closed, they are spliced ​​with the cover plate to surround the hydraulic system.

3. The self-adaptive floating lifting harvester structure according to claim 2, characterized in that: The edges of the left and right side panels are both provided with clamped edges, the left and right hydraulic oil tanks are provided with clamping edges corresponding to the clamped edges, and the clamping edges are equipped with closing bolts that can be connected to the frame. When the double-door structure is closed, the clamping edges are pressed on the clamped edges and the closing bolts are screwed into the frame.

4. The self-adaptive floating lifting harvester structure according to claim 3 is characterized in that: The left and right hydraulic oil tanks are both provided with system connectors, and the left and right hydraulic oil tanks are both hinged to the frame through hinges. A hydraulic rotary joint is installed on the hinge shaft of the hinge, and the hydraulic rotary joint connects the system connector and the hydraulic system, thereby forming a separate connection between the hydraulic system and the left and right hydraulic oil tanks.

5. The self-adaptive floating lifting harvester structure according to claim 4 is characterized in that: The left and right hydraulic oil tanks are both provided with oil tank joints, and the hinge shaft is also provided with a junction box swivel joint connected with the oil tank joint. The junction box swivel joints on the two hinge shafts are connected to form the connection between the left and right hydraulic oil tanks.

6. The self-adaptive floating lifting harvester structure according to claim 5, characterized in that: The upper and lower ends of the hinge shaft are respectively provided with threaded sealing holes arranged along the axial direction and sealed by threaded plugs. The junction box swivel joint is connected to the threaded sealing hole at the lower end of the hinge shaft, and the hydraulic swivel joint is connected to the threaded sealing hole at the upper end of the hinge shaft. The junction box swivel joint and the hydraulic swivel joint have the same structure, and are both composed of two connecting heads sleeved on the chain hinge shaft. The connecting head includes a connecting sleeve sleeved on the chain hinge shaft and an oil pipe sleeve head connected to the connecting sleeve and integrally formed. The axial direction of the oil pipe sleeve head is perpendicular to the axial direction of the connecting sleeve. The connecting sleeve is sleeved outside the threaded sealing hole and a through hole coaxially connected to the oil pipe sleeve head is provided on the threaded sealing hole.

7. The self-adaptive floating lifting harvester structure according to claim 6, characterized in that: The upper end and the lower end of the inner wall of the connecting sleeve are respectively provided with annular sealing grooves, and a sealing ring is press-fitted in the annular sealing groove, and the sealing ring is clamped on the hinge shaft.

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