Folding rack of paddy field folding rotary cultivator

Abstract

The utility model relates to the technical field of paddy field folding rotary cultivators, in particular to a folding machine frame of a paddy field folding rotary cultivator, which comprises a gantry mechanism and a rotary cultivator frame, a first box body fixing plate is arranged on a gantry of the gantry mechanism, and the first box body fixing plate is positioned at the rear end of a gantry supporting pipe of the gantry mechanism; the upper end face of the box body fixing plate is flush with the upper end face of the gantry supporting pipe, reinforcing ribs and a reinforcing plate are fixedly arranged at the lower end of the first box body fixing plate, and the bearing capacity of the first box body fixing plate can be enhanced. The second box body fixing plate is vertically fixed to the rear end face of the first box body fixing plate. The weight of the rear portion of the box body is pulled between the second box body fixing plate and the portal frame through an arch-shaped supporting arm so that the overall strength of the portal frame mechanism can be further enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of foldable rotary tillers for paddy fields, in particular to a foldable frame of a foldable rotary tiller for paddy fields. Background Art

[0002] In paddy field folding rotary tillers, especially heavy-duty paddy field folding rotary tillers, the weight of the two parts of the rotary tiller body is concentrated on the gantry structure in the middle of the equipment. The gantry structure bears a large load, which can easily cause the gantry structure to deform, thereby affecting the smooth use of the equipment. In severe cases, it will damage the transmission parts such as the gearbox, causing serious losses. Therefore, a gantry structure with a reasonable structure and strong load-bearing capacity is adopted. The folding paddy field rotary tiller can unfold or fold the body according to the needs of use, which is convenient for transportation, improves the road pass rate, and does not affect traffic. In addition, when the soil dragging and leveling mechanism encounters large soil blocks or debris, the compression spring of the strong pressure piece will compress or extend according to the ground conditions, reducing damage to the soil dragging plate and the soil leveling mechanism. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a folding frame of a paddy field folding rotary tiller, the rotary tiller frame is connected to a gantry frame and a second box fixing plate, and the gantry frame and the second box fixing plate are processed by a supporting arm, and a gearbox required for transmission is arranged on the first box fixing plate between the gantry frame and the second box fixing plate, so that the gantry structure can withstand a larger load.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a folding frame of a paddy field folding rotary tiller, including a gantry mechanism and a rotary tiller frame, the gantry mechanism includes a gantry frame, a first box fixing plate is arranged on the rear end surface of the gantry frame, a second box fixing plate is arranged on the first box fixing plate, the second box fixing plate is connected to the gantry frame through a support arm, a transmission mounting position is arranged on the first box fixing plate below the support arm, a transmission yielding port is arranged on the gantry frame at a position corresponding to the transmission mounting position, a frame connecting mechanism is arranged on both sides of the first box fixing plate, the frame connecting mechanism is connected to the gantry frame and the second box fixing plate, and the frame connecting piece is connected to the rotary tiller frame, and both side ends of the gantry frame are provided with A folding drive member is provided, the telescopic part of the folding drive member is connected to the rotary tiller frame on the corresponding side and drives the rotary tiller frame to rotate between the folding position and the unfolding position relative to the gantry frame, each rotary tiller frame is provided with a transmission mechanism, the transmission mechanism includes a transmission box, a primary transmission shaft and a secondary transmission shaft, the transmission box is arranged at the end of the rotary tiller frame, the secondary transmission shaft is arranged on the rotary tiller frame and is transmission-connected with the power receiving part of the transmission box, both ends of the primary transmission shaft are provided with universal couplings, one end of the primary transmission shaft is connected to the secondary transmission shaft, and the other end is arranged at the transmission installation position, and a rotary tiller blade shaft installation position is arranged at the power output part of the transmission box on the rotary tiller frame; the rear end of the rotary tiller frame is provided with a soil leveling structure.

[0005] Rotary tiller frames are installed on both sides of the gantry mechanism, and the rotary tiller frames are connected to the gantry frame and the second box fixing plate. A first box fixing plate for installing a gearbox is also provided between the gantry frame and the second box fixing plate. The connection between the gearbox and the rotary tiller frame is separated to avoid mutual influence. Each rotary tiller frame is provided with a transmission mechanism suitable for its folding and flipping, and each rotary tiller frame is also provided with a soil leveling structure.

[0006] As an optional solution, the frame connecting mechanism includes a connecting shaft, a rotating member and a rotary tiller connecting member. The connecting shaft is arranged at the side end of the first box fixed plate and is connected to the gantry and the second box fixed plate. The rotating member is arranged on the connecting shaft and rotates relative to the connecting shaft. The rotating part of the rotating member is provided with a rotary tiller connecting member.

[0007] As an optional solution, the rotary tiller frame includes a hanging beam, and the rotary tiller connecting piece includes a clamping type connecting piece, and the clamping type connecting piece is connected with the hanging beam. The rotary tiller frame adopts the clamping type connecting piece to be connected with the hanging beam of the rotary tiller frame, which facilitates the disassembly and assembly between the gantry mechanism and the rotary tiller frame.

[0008] As an optional solution, the rotary tiller frame includes at least a front hanging beam and a rear hanging beam parallel to each other, both of which are connected to the clamping type connector, and the soil leveling structure is connected to the rear hanging beam.

[0009] As an optional solution, the soil leveling structure includes a soil dragging plate and a soil leveling mechanism, the upper part of the soil dragging plate is connected to the rear hanging beam and the soil dragging plate rotates relative to the rear hanging beam, the soil leveling mechanism includes a first soil leveling plate and a second soil leveling plate, the first soil leveling plate is connected to the lower part of the soil dragging plate and rotates relative to the soil dragging plate, the second soil leveling plate is arranged on the first soil leveling plate, the first soil leveling plate is provided with a soil leveling telescopic driving member, the soil leveling telescopic driving member drives the second soil leveling plate to move between the extended position and the retracted position relative to the first soil leveling plate, the lower end surface of the first soil leveling plate and the lower end surface of the second soil leveling plate extending outside the first soil leveling plate constitute the soil leveling end surface. During rotary tillage, the soil dragging plate plays the role of leveling the soil, the first soil leveling plate and the second soil leveling plate play the role of leveling the soil, the second soil leveling plate can move relative to the first soil leveling plate in the width direction of the rotary tillage frame, can adjust the soil leveling width, and achieve a better soil leveling effect.

[0010] As an optional solution, both the dragging plate and the first leveling plate are provided with a leveling pressure piece, which includes a leveling pressure rod and a pressure rod seat, the bottom end of the leveling pressure rod is connected to the dragging plate or the first leveling plate and rotates relative to the connection, an upper stopper is provided on the leveling pressure rod, the upper stopper moves along the axial direction of the leveling pressure rod and the upper stopper is rotatably connected to the pressure rod seat provided on the rear hanging beam, a lower stopper is provided below the upper stopper on the leveling pressure rod, and a spring is provided between the upper stopper and the lower stopper on the leveling pressure rod. Both the dragging plate and the first leveling plate have corresponding leveling pressure pieces, which have a suppressing effect on the dragging plate and the first leveling plate connected thereto, so that the leveling structure can achieve a better leveling effect.

[0011] As an optional solution, the upper block and the lower block are both provided with openings, the soil leveling pressure rod passes through the openings of the upper block and the lower block, and a plurality of block limit pin holes are axially arranged on the soil leveling pressure rod.

[0012] As an optional solution, a telescopic guide is provided on the first leveling plate, and the telescopic guide includes an outer guide and an inner guide. The outer guide is provided on the first leveling plate and a guide channel is provided in the outer guide. A moving clearance gap is reserved between the outer guide and the first leveling plate, and the moving clearance gap is communicated with the guide channel. The inner guide is provided in the guide channel and moves along the direction defined by the outer guide. The second leveling plate is provided in the moving clearance gap and connected to the inner guide. The leveling telescopic drive is provided on the outer guide and the telescopic portion of the leveling telescopic drive is connected to the inner guide. The telescopic guide can further limit the moving direction of the second leveling plate relative to the first leveling plate, and can also enhance the neatness and strength of the leveling structure.

[0013] As an optional solution, a gearbox is arranged at the transmission installation position, a power receiving part is arranged at the transmission yielding port corresponding to the gearbox, and power output parts are arranged at the two transmission mechanisms corresponding to the gearbox, and the power output parts are connected to the universal couplings at the ends of the two primary transmission shafts.

[0014] As an optional solution, a fixed shield is provided on the outside of the secondary transmission shaft of the rotary tiller frame, and a telescopic shield is provided on the outside cover of the primary transmission shaft, and the two ends of the telescopic shield are rotatably connected to the gearbox and the fixed shield respectively. The fixed shield and the telescopic shield protect the secondary transmission shaft and the primary transmission shaft respectively, so that both are isolated from the external environment.

[0015] Compared with the prior art, the utility model has the following beneficial effects: 1. The gantry mechanism is provided with a frame connection mechanism on both sides of the first box fixing plate, the frame connection mechanism is connected to the gantry frame and the second box fixing plate, the gantry frame and the second box fixing plate are connected and supported by the first box fixing plate and connected and reinforced by the support arm, the gantry mechanism forms a stable structure, which is suitable for the installation and use of the rotary tillage frame, especially the large rotary tillage frame of the heavy paddy field folding rotary tiller, the gearbox of the paddy field folding rotary tiller is arranged on the first box fixing plate, the first box fixing plate is connected to the first box fixing plate, and the gearbox of the heavy paddy field folding rotary tiller is arranged on the first box fixing plate. The plate is not directly connected to the rotary tillage frame, even if the rotary tillage frame causes a slight deformation of the gantry mechanism, it will not directly affect and damage the gearbox; 2. The soil leveling structure includes two parts: a soil dragging plate and a soil leveling mechanism. The soil dragging plate is connected to the rotary tillage frame and is pressed to the ground by corresponding soil leveling pressing pieces, and the soil leveling mechanism is connected to the soil dragging plate and is also pressed to the ground by corresponding soil leveling pressing pieces, thereby achieving a better soil leveling effect; 3. The second soil leveling plate of the soil leveling mechanism can move relative to the first soil leveling plate to achieve adjustment of the soil leveling range, especially the soil leveling width range, thereby further improving the soil leveling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is the structural diagram of the folding frame;

[0018] Figure 2 Structural diagram omitting the telescopic guard for the folding frame;

[0019] Figure 3 The structural diagram omits the gearbox, telescopic cover and primary drive shaft for the folding frame;

[0020] Figure 4 This is the structural diagram of the gantry mechanism;

[0021] Figure 5 This is a structural diagram of the rotary tiller frame;

[0022] Figure 6 It is a structural diagram of a flat earth structure;

[0023] In the figure: 1. gantry mechanism, 11. gantry frame, 12. first box fixing plate, 13. second box fixing plate, 14. support arm, 15. frame connecting mechanism, 16. folding drive member, 2. rotary tillage frame, 21. transmission box, 22. primary transmission shaft, 23. secondary transmission shaft, 24. hanging beam, 25. soil dragging plate, 26. first soil leveling plate, 27. second soil leveling plate, 28. soil leveling telescopic drive member, 29. soil leveling pressing member, 210. telescopic guide member, 211. telescopic shield. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example: Figure 1-Figure 6 As shown, a folding frame of a foldable rotary tiller for paddy fields, a gantry mechanism 1 and a rotary tiller frame 2, two rotary tiller frames 2 are symmetrically mounted on the gantry mechanism 1, the two rotary tiller frames 2 can rotate relative to the connection with the gantry mechanism 1, driven by the corresponding folding drive member 16, each rotary tiller frame 2 rotates between a folding position and an unfolded position relative to the gantry mechanism 1, when the foldable rotary tiller for paddy fields is performing rotary tillage work, the two rotary tiller frames 2 are in the unfolded position, and when the foldable rotary tiller for paddy fields needs to be folded for transportation or other purposes, the two rotary tiller frames 2 are in the folded position.

[0026] See also Figure 1-Figure 4The gantry mechanism 1 includes a gantry frame 11. The front end face of the gantry frame is provided with a three-point suspension mechanism suitable for connecting and cooperating with a tractor or other tractor. The three-point suspension mechanism adopts the structure of the prior art, and its structure is not described in detail here. The rear end face of the gantry frame is provided with a first box fixing plate 12, and the first box fixing plate 12 is provided with a second box fixing plate 13. Preferably, the second box fixing plate 13 is provided at the rear end face of the first box fixing plate 12 and is fixedly connected to the first box fixing plate 12. The second box fixing plate 13 is connected to the gantry frame 11 through a support arm. The support arm 14 is above the first box fixing plate 12. The support arm 14 is a reinforcement beam in the form of a straight rod or a bow rod. One end of the support arm 14 is connected to the gantry frame 11, and the other end is connected to the second box fixing plate 13. The support arm 14 reinforces the first box fixing plate 12 and the gantry frame 11. A transmission installation position is provided on the first box fixing plate 12 below the support arm 14, and the transmission installation position is used to install the gearbox required for the folding rotary tiller. A transmission clearance port is provided on the gantry 11 at the corresponding transmission installation position. When the gearbox is installed at the transmission installation position, the power receiving part of the gearbox corresponds to the transmission clearance port, and the power of the tractor or other tractor is transmitted to the gearbox through the transmission clearance port. The connection between the support arm 14 and the gantry 11 is located above the transmission clearance port.

[0027] In some embodiments, the support arm 14 is detachably connected to the second box fixing plate 13 and the gantry 11 to facilitate installation and removal of the gearbox.

[0028] In some embodiments, a gantry traction member is provided at the top of the gantry 11, and a slot is provided on the gantry traction member. The gantry traction member is buckled on the top of the gantry 11 through the slot and connected to the gantry 11, and a front traction connecting hole is provided on the gantry traction member at the front side of the gantry 11, and the part of the gantry traction member on the front side of the gantry 11 can be used as an upper traction connecting member of the three-point suspension mechanism; rear traction connecting holes are provided at the rear side of the gantry 11, and the support arm 14 is connected to the gantry traction member by a bolt structure passing through each rear traction connecting hole; a support arm connecting ear is provided on the second box fixing plate 13, and the support arm 14 is detachably connected to the support arm connecting ear by a bolt structure.

[0029] A frame connection mechanism 15 is provided on both sides of the first box fixing plate 12, and the two frame connection mechanisms 15 are symmetrically distributed on the opposite sides of the first box fixing plate 12. The frame connection mechanism 15 is used to install and connect the rotary tillage frame 2 to the gantry mechanism 1. The frame connection mechanism 15 is not directly installed on the first box fixing plate 12, but is connected to the gantry 11 and the second box fixing plate 13, so that the weight of the rotary tillage frame 2 can be distributed to the gantry 11 and the second box fixing plate 13. The gantry 11 and the second box fixing plate 13 are supported and reinforced by the support arm 14 and the first box fixing plate 12, thereby ensuring that the gantry mechanism 1 has sufficient strength as a whole, the first box fixing plate 12 does not directly bear the load, and the gearbox is installed on the first box fixing plate 12. Even if the gantry 11 or the second box fixing plate 13 is deformed to a certain extent, it will not directly cause a significant impact on the gearbox, thereby achieving protection of the gearbox. In some embodiments, a reinforcing rib and a reinforcing plate are fixedly provided at the lower end of the first box body fixing plate, so as to enhance the bearing capacity of the first box body fixing plate.

[0030] See also Figure 4 The frame connection mechanism 15 includes a connecting shaft, a rotating member and a rotary tiller connecting member. The connecting shaft is arranged at the side end of the first box fixing plate 12. Mounting holes are reserved at the mounting positions corresponding to the connecting shaft on the gantry 11 and the second box fixing plate 13. The connecting shaft passes through the two mounting holes and is connected to the gantry 11 and the second box fixing plate 13. The rotating member is arranged on the connecting shaft and rotates relative to the connecting shaft. The rotating part of the rotating member is provided with a rotary tiller connecting member. As a specific example, the rotating member includes a sleeve and a plurality of connecting plates fixed on the outer end surface of the sleeve. The sleeve is sleeved on the connecting shaft and can rotate relative to the connecting shaft. Each connecting plate is connected to the cross plate. The rotary tiller connecting member is connected to the cross plate. The rotary tiller connecting member can rotate relative to the connecting shaft.

[0031] See also Figure 1-Figure 5 In some embodiments, the rotary tiller frame 2 includes a hanging beam 24, and the rotary tiller connecting piece includes a clamping type connecting piece, which is connected to the hanging beam 24 in a coordinated manner. The clamping type connecting piece is clamped to the hanging beam 24 and its top is connected to the cross plate. The clamping type connecting piece can realize the rapid assembly or rapid disassembly of the rotary tiller frame 2 and the gantry mechanism 1.

[0032] As a preferred embodiment, the rotary tiller frame 2 includes a plurality of mutually parallel hanging beams 24, and the rotary tiller connecting piece includes a plurality of clamping type connecting pieces, each clamping type connecting piece is respectively connected with each hanging beam 24 in cooperation, and the soil leveling structure is arranged at the rear end of the rotary tiller frame 2 and connected with the hanging beam 24 located at the rear end. As a further preferred embodiment, the rotary tiller frame 2 includes mutually parallel front hanging beams and rear hanging beams, and clamping type connecting pieces are arranged at the positions corresponding to the front hanging beams and the rear hanging beams on the cross plate, and the front hanging beams and the rear hanging beams are both connected with the clamping type connecting pieces.

[0033] Folding drive members 16 are provided at both ends of the gantry 11. The two folding drive members 16 are symmetrically arranged relative to the gantry 11. The folding drive members 16 are telescopic members. The folding drive members 16 can rotate relative to the connection with the gantry 11. The telescopic part of the folding drive member 16 is connected to the rotary tiller frame 2 on the corresponding side. The folding drive member 16 drives the corresponding rotary tiller frame 2 to rotate between the folded position and the unfolded position relative to the gantry 11. The telescopic part of the folding drive member 16 is also provided with a clamping type connector, and the telescopic part of the folding drive member 16 is connected to the hanging beam 24 of the corresponding rotary tiller frame 2 through the clamping type connector.

[0034] Safety hangers are provided at both ends of the gantry 11. The safety hangers can rotate relative to the gantry 11. The two safety hangers are symmetrically distributed and are provided with hooks. The rotary tiller frame 2 is provided with a hanger matching piece. In order to prevent the rotary tiller frame 2 from moving uncontrollably to the unfolded position due to a failure of the folding drive member 16 or other reasons, when the two rotary tillers 2 are in the folded position, the safety hangers should hook the hanger matching piece. A hanger telescopic drive member is also provided at the gantry 11 corresponding to the two safety hangers. The telescopic part of the hanger telescopic drive member is connected to the safety hanger and drives the safety hanger to rotate relative to the gantry 11.

[0035] See also Figure 1-Figure 3 and Figure 5-Figure 6 The soil leveling structure includes a soil dragging plate 25 and a soil leveling mechanism. The upper part of the soil dragging plate 25 is connected to the rear end of the rotary tiller frame 2, and the soil dragging plate 25 can rotate relative to the rotary tiller frame 2. When the rotary tiller frame 2 is provided with a plurality of hanging beams 24, the soil dragging plate 25 is connected to the rear hanging beam and can rotate relative to the rear hanging beam. The end face of the soil dragging plate 25 facing the rotary tiller frame 2 is the soil dragging end face.

[0036] The soil leveling mechanism is connected to the lower part of the dragging plate 25 and can rotate relative to the dragging plate 25. Specifically, the soil leveling mechanism includes a first soil leveling plate 26 and a second soil leveling plate 27. The first soil leveling plate 26 is connected to the lower part of the dragging plate 25 and the first soil leveling plate 26 rotates relative to the dragging plate 25. The lower end surface of the first soil leveling plate 26 is the first soil leveling end surface. The second soil leveling plate 27 is arranged on the first soil leveling plate 26 and can move relative to the first soil leveling plate 26. The lower end surface of the second soil leveling plate 27 is the second soil leveling end surface. A telescopic driving member 28 for leveling soil is provided on the soil plate 26. The telescopic portion of the telescopic driving member 28 is connected to the second soil leveling plate 27 and drives the second soil leveling plate 27 to move relative to the first soil leveling plate 26. Driven by the telescopic driving member 28, the second soil leveling plate 27 moves between the extended position and the retracted position. When the second soil leveling plate 27 is in the extended position, part of the second soil leveling end surface extends out of the first soil leveling plate 26. At this time, the part of the second soil leveling end surface extending out of the first soil leveling end plate and the first soil leveling end surface constitute the soil leveling end surface.

[0037] The telescopic direction of the soil-leveling telescopic driving member 28 is perpendicular to the front-rear direction relative to the gantry mechanism 1. The soil-leveling telescopic driving member 28 drives the second soil-leveling plate 27 to move relative to the first soil-leveling plate 26, and can adjust the soil-leveling width of the soil-leveling mechanism, so that the paddy field folding rotary tiller can level a wider range of land during rotary tillage.

[0038] In order to achieve a better soil leveling effect, soil leveling pieces 29 are provided on the soil-dragging plate 25 and the first soil leveling plate 26. The soil leveling pieces 29 are connected to the rotary tiller frame 2. The soil leveling pieces 29 press the soil-dragging plate 25 or the first soil leveling plate 26 connected thereto downward, so that the soil-dragging plate 25 can achieve a better soil leveling effect, and the first soil leveling plate 26 and the second soil leveling plate 27 can achieve a better soil leveling effect.

[0039] The soil leveling pressure piece 29 includes a soil leveling pressure rod and a pressure rod seat. The soil leveling pressure rod of the soil leveling pressure piece 29 connected to the soil dragging plate 25 has a bottom end connected to the soil dragging plate 25 and rotates relative to the soil dragging plate 25. The soil leveling pressure rod of the soil leveling pressure piece 29 connected to the first soil leveling plate 26 has a bottom end connected to the first soil leveling plate 26 and rotates relative to the first soil leveling plate 26. Each soil leveling pressure rod is provided with an upper stopper, which can move and adjust its position along the rod length direction of the soil leveling pressure rod. The upper stopper is connected to a pressure rod seat, which can rotate relative to the upper stopper. The pressure rod seat is used to be connected to the rotary tiller frame 2. A lower stopper is provided on the soil leveling pressure rod below the upper stopper, and a spring is sleeved on the rod body of the soil leveling pressure rod between the upper stopper and the lower stopper. The upper end of the spring contacts the upper stopper, and the lower end contacts the lower stopper. The elastic force of the spring causes the soil-leveling pressure rod to tend to move downward, so that the soil-leveling pressure piece 29 can play a role in pressing down the soil-dragging plate 25 or the first soil-leveling plate 26. During the rotary tillage process, when encountering obstacles such as stones or unbroken soil blocks, the soil-dragging plate 25 and the soil-leveling mechanism will be lifted, and the spring of the soil-leveling pressure piece 29 will be squeezed. After passing the obstacle, the soil-dragging plate 25 and the soil-leveling mechanism will move back to the ground under the action of the soil-leveling pressure pieces 29, achieving a better soil-leveling effect.

[0040] A top stopper is also provided on the soil leveling pressure rod above the upper stopper, and a spring is also provided on the soil leveling pressure rod between the upper stopper and the top stopper. The top stopper and the spring connected thereto are used to limit the moving range of the upper stopper to prevent the upper stopper from falling off.

[0041] In some embodiments, openings are provided on the upper block and the lower block, and the soil leveling pressure rod passes through the openings of the upper block and the lower block. A plurality of block limit pin holes are arranged axially on the soil leveling pressure rod. The pin shaft passing through the block limit pin hole can limit the movement range of the upper block and the lower block along the soil leveling pressure rod, thereby achieving a better soil leveling effect.

[0042] In order to improve the stability of the adjustment of the soil leveling mechanism and reduce the burden of the soil leveling telescopic driving member 28, in some embodiments, a telescopic guide member 210 is arranged on the first soil leveling plate 26, and the telescopic guide member 210 includes an outer guide member and an inner guide member. The outer guide member is arranged on the first soil leveling plate 26, and a guide channel is arranged in the outer guide member. The guide channel is consistent with the telescopic direction of the soil leveling telescopic driving member 28, and a movable clearance is reserved between the outer guide member and the upper plate surface of the first soil leveling plate 26. The movable clearance is used for the second soil leveling plate 27 to move and the movable clearance is consistent with the inner guide member. The guide channels are interconnected, the inner guide member is inserted into the guide channel, the inner end surface of the outer guide member contacts and cooperates with the outer end surface of the inner guide member, thereby limiting the inner guide member to move only along the guide channel, the second leveling plate 27 is arranged at the moving clearance and is connected to the bottom end surface of the inner guide member, the leveling telescopic driving member 28 is arranged on the outer guide member, the telescopic part of the leveling telescopic driving member 28 is connected to the guide member, the leveling telescopic driving member 28 drives the guide member to move along the guide channel, and then drives the second leveling plate 27 to move between the extended position and the retracted position relative to the first leveling plate 26.

[0043] See also Figure 1 and Figure 2 , each rotary tiller frame 2 is provided with a transmission mechanism, the transmission mechanism includes a transmission box 21, a primary transmission shaft 22 and a secondary transmission shaft 23, the transmission box 21 is arranged at the end of the rotary tiller frame 2, preferably, the transmission box 21 is located at the end of the rotary tiller frame 2 away from the gantry mechanism 1, the transmission box 21 is provided with a power receiving part and a power output part, the power receiving part corresponds to the upper part of the rotary tiller frame 2, the secondary transmission shaft 23 is installed on the rotary tiller frame 2 through a bearing seat or other bearing structure, one end of the secondary transmission shaft 23 is connected to the power receiving part of the transmission box 21 Transmission connection, both ends of the first-level transmission shaft 22 are provided with universal couplings, one end of the first-level transmission shaft 22 is connected to the second-level transmission shaft 23 through the universal coupling, and the other end of the first-level transmission shaft 22 is at the transmission mounting position. When a gearbox is installed at the transmission mounting position, the first-level transmission shaft 22 is connected to the power output part of the gearbox through a universal coupling. When the rotary tiller frame 2 rotates relative to the gantry mechanism 1 between the folding position and the unfolding position, the power of the gearbox can be transmitted to the transmission box 21 through the first-level transmission shaft 22 and the second-level transmission shaft 23.

[0044] A rotary tiller shaft mounting position is provided on the rotary tiller frame 2, and the rotary tiller shaft mounting position is located below the rotary tiller frame 2 and corresponds to the power output part of the transmission box 21. The rotary tiller shaft mounting position is suitable for installing the rotary tiller shaft of a folding rotary tiller for paddy fields, and the soil leveling structure is installed at the rear end of the rotary tiller frame 2 and corresponds to the rear side of the rotary tiller shaft mounting position.

[0045] In order to avoid potential safety hazards caused by the rotation of the first transmission shaft and / or the second transmission shaft when the paddy field folding rotary tiller is in use, and to prevent foreign debris from being entangled on the first transmission shaft and / or the second transmission shaft, a fixed shield is provided on the outside of the secondary transmission shaft 23 on the rotary tiller frame 2, and the secondary transmission shaft 23 is inside the fixed shield. A telescopic shield 211 is provided on the outer cover of the primary transmission shaft 22, one end of the telescopic shield 211 is connected to the gearbox and the telescopic shield 211 can rotate relative to the gearbox, the other end of the telescopic shield 211 is connected to the fixed shield and the telescopic shield 211 can rotate relative to the fixed shield, the telescopic shield 211 can be extended or shortened, and the telescopic shield 211 is adaptively extended according to the movement of the rotary tiller frame 2 between the folded position and the unfolded position.

[0046] As a specific example of the telescopic shield 211, the telescopic shield 211 includes a first shield body and a second shield body, both of which are U-shaped shields, and both edges of the bottom of the second shield body are bent inward to form guide edges, one end of the first shield body is inserted into the second shield body, and the two edges of the bottom of the first shield body are respectively extended into the guide edges, and the first shield body moves relative to the second shield body along the guide edges to achieve the extension or shortening of the telescopic shield 211.

[0047] In the description of this specification, the description of reference terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A folding frame of a paddy field folding rotary tiller, characterized in that: The invention comprises a gantry mechanism (1) and a rotary tiller frame (2). The gantry mechanism (1) comprises a gantry frame (11). A first box fixing plate (12) is arranged on the rear end surface of the gantry frame (11). A second box fixing plate (13) is arranged on the first box fixing plate (12). The second box fixing plate (13) is connected to the gantry frame (11) via a support arm (14). A transmission installation position is arranged on the first box fixing plate (12) below the support arm (14). A transmission clearance opening is arranged on the gantry frame (11) at a position corresponding to the transmission installation position. Frame connecting mechanisms (15) are arranged on both sides of the first box fixing plate (12). The frame connecting mechanisms (15) are connected to the gantry frame (11) and the second box fixing plate (13). The frame connecting members are connected to the rotary tiller frame (2). Folding driving members (16) are arranged on both side ends of the gantry frame (11). The folding driving members The telescopic portion of the rotary tiller frame (16) is connected to the rotary tiller frame (2) on the corresponding side and drives the rotary tiller frame (2) to rotate between the folded position and the unfolded position relative to the gantry frame (11). Each rotary tiller frame (2) is provided with a transmission mechanism, which comprises a transmission box (21), a primary transmission shaft (22) and a secondary transmission shaft (23). The transmission box (21) is arranged at the end of the rotary tiller frame (2). The secondary transmission shaft (23) is arranged on the rotary tiller frame (2) and is transmission-connected to the power receiving part of the transmission box (21). Universal couplings are arranged at both ends of the primary transmission shaft (22). One end of the primary transmission shaft (22) is connected to the secondary transmission shaft (23), and the other end is arranged at a transmission installation position. A rotary tiller blade shaft installation position is arranged at the power output part of the transmission box (21) on the rotary tiller frame (2); and a soil leveling structure is arranged at the rear end of the rotary tiller frame (2).

2. The folding frame of the paddy field folding rotary tiller according to claim 1 is characterized in that: The frame connection mechanism (15) comprises a connection shaft, a rotating member and a rotary tiller connection member, the connection shaft being arranged at the side end of the first box body fixing plate (12) and connected to the gantry (11) and the second box body fixing plate (13), the rotating member being arranged on the connection shaft and rotating relative to the connection shaft, and the rotary tiller connection member being arranged on the rotating portion of the rotating member.

3. The folding frame of the paddy field folding rotary tiller according to claim 2 is characterized in that: The rotary tiller frame (2) comprises a hanging beam (24), and the rotary tiller connecting piece comprises a clamping type connecting piece, and the clamping type connecting piece is cooperatively connected to the hanging beam (24).

4. The folding frame of the paddy field folding rotary tiller according to claim 3 is characterized in that: The rotary tiller frame (2) comprises at least a front hanging beam and a rear hanging beam which are parallel to each other, the front hanging beam and the rear hanging beam are both connected to the clamping type connecting piece, and the soil leveling structure is connected to the rear hanging beam.

5. The folding frame of the paddy field folding rotary tiller according to claim 4 is characterized in that: The soil leveling structure comprises a soil dragging plate (25) and a soil leveling mechanism, wherein the upper portion of the soil dragging plate (25) is connected to a rear hanging beam and the soil dragging plate (25) rotates relative to the rear hanging beam, and the soil leveling mechanism comprises a first soil leveling plate (26) and a second soil leveling plate (27), wherein the first soil leveling plate (26) is connected to the lower portion of the soil dragging plate (25) and rotates relative to the soil dragging plate (25), and the second soil leveling plate (27) is arranged on the first soil leveling plate (26), and a soil leveling telescopic driving member (28) is arranged on the first soil leveling plate (26), and the soil leveling telescopic driving member (28) drives the second soil leveling plate (27) to move between an extended position and a retracted position relative to the first soil leveling plate (26), and the lower end surface of the first soil leveling plate (26) and the lower end surface of the second soil leveling plate (27) extending outside the first soil leveling plate (26) constitute a soil leveling end surface.

6. The folding frame of the paddy field folding rotary tiller according to claim 5, characterized in that: The soil dragging plate (25) and the first soil leveling plate (26) are both provided with a soil leveling pressure piece (29), the soil leveling pressure piece (29) comprising a soil leveling pressure rod and a pressure rod seat, the bottom end of the soil leveling pressure rod is connected to the soil dragging plate (25) or the first soil leveling plate (26) and rotates relative to the connection, an upper stopper is provided on the soil leveling pressure rod, the upper stopper moves along the axial direction of the soil leveling pressure rod and the upper stopper is rotatably connected to the pressure rod seat provided on the rear hanging beam, a lower stopper is provided on the soil leveling pressure rod below the upper stopper, and a spring is provided on the soil leveling pressure rod between the upper stopper and the lower stopper.

7. The folding frame of the paddy field folding rotary tiller according to claim 6, characterized in that: The upper block and the lower block are both provided with openings, the soil leveling pressure rod passes through the openings of the upper block and the lower block, and a plurality of block limiting pin holes are arranged along the axial direction on the soil leveling pressure rod.

8. The folding frame of the paddy field folding rotary tiller according to claim 5, characterized in that: A telescopic guide member (210) is provided on the first soil leveling plate (26), the telescopic guide member (210) comprising an outer guide member and an inner guide member, the outer guide member being provided on the first soil leveling plate (26) and having a guide channel provided therein, a movable clearance gap being reserved between the outer guide member and the first soil leveling plate (26), the movable clearance gap being in communication with the guide channel, the inner guide member being provided in the guide channel and moving along a direction defined by the outer guide member, the second soil leveling plate (27) being provided in the movable clearance gap and being connected to the inner guide member, the soil leveling telescopic driving member (28) being provided on the outer guide member and the telescopic portion of the soil leveling telescopic driving member (28) being connected to the inner guide member.

9. The folding frame of the paddy field folding rotary tiller according to claim 5, characterized in that: A gearbox is arranged at the transmission installation position, a power receiving part is arranged at the gearbox corresponding to the transmission yielding port, a power output part is arranged at the gearbox corresponding to the two transmission mechanisms, and the power output part is connected to the universal coupling at the end of the two primary transmission shafts (22).

10. The folding frame of the paddy field folding rotary tiller according to claim 5, characterized in that: A fixed shield is provided on the outside of the secondary transmission shaft (23) of the rotary tiller frame (2), and a telescopic shield (211) is provided on the outside of the primary transmission shaft (22). The two ends of the telescopic shield (211) are respectively rotatably connected to the gearbox and the fixed shield.

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