A rotatable frame for agricultural machinery

Abstract

The present invention belongs to the technical field of agricultural machinery, and specifically relates to a rotatable frame for agricultural machinery, including a lower walking frame, an upper working frame, a lifting structure and a rotating structure; the lower walking frame serves as a supporting structure of the rotatable frame, and its front end is connected to a traction device; the upper working frame is connected to the lifting structure, and the upper working frame is used to carry parts of the agricultural machinery; the rotating structure is arranged on the lower walking frame; the lifting structure is vertically fixed on the rotating structure; the rotating structure drives the lifting structure to rotate and then drives the upper working frame to rotate. The rotatable frame of the present invention can make the upper working frame rotate 90 degrees by lifting and rotating, so as to quickly switch between the transport state and the working state, effectively solve the problem of excessive width of agricultural machinery during transportation, improve the transportation and work efficiency of agricultural machinery, and also reduce the occupation of roads and bridges, which is beneficial to traffic safety.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural machinery, and in particular relates to a rotatable frame for agricultural machinery. Background Art

[0002] Agricultural machinery is an important tool for modern agricultural production. It can improve agricultural production efficiency, save human resources, and improve the agricultural production environment. With the continuous development and innovation of agricultural machinery, agricultural machinery needs to undertake more functions and tasks, so the structure and components of agricultural machinery have also increased and become more complicated accordingly, resulting in an increase in the size of agricultural machinery. This has brought great difficulties and restrictions to the movement and transportation of agricultural machinery, especially on narrow roads and bridges. The excessive width of agricultural machinery will affect traffic safety and efficiency, and even cause traffic accidents and damage.

[0003] In order to solve the problem of excessive width of agricultural machinery, there are currently some technical solutions, for example, disassembling or folding the parts of the agricultural machinery to reduce the size of the agricultural machinery. However, these technical solutions also have some disadvantages and shortcomings. For example, disassembling or folding the parts of the agricultural machinery will increase the structural complexity and operating difficulty of the agricultural machinery, and will also increase the maintenance cost and failure risk of the agricultural machinery. In addition, the disassembly or folding process will also take up a lot of time, reducing the working efficiency of the agricultural machinery.

[0004] Therefore, a technical solution is needed that can effectively solve the over-width problem of agricultural machinery while keeping the structure of the agricultural machinery simple and easy to operate. Summary of the invention

[0005] The purpose of the present invention is to provide a rotatable frame for agricultural machinery, which can make the working part rotate 90 degrees by lifting and rotating, so as to quickly switch between the transportation or walking state and the working state, effectively solve the problem of excessive width of agricultural machinery, facilitate transportation and passing through narrow areas, and improve the transportation and working efficiency of agricultural machinery.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following specific technical scheme: a rotatable frame for agricultural machinery, comprising a lower walking frame, an upper working frame, a lifting structure and a rotating structure;

[0007] The lower walking frame serves as a supporting structure of the rotatable frame, and its front end is connected to the traction device;

[0008] The upper working frame is connected to the lifting structure, and the upper working frame is used to carry the parts of the agricultural machinery; the lifting structure drives the upper working frame to move up and down;

[0009] The rotating structure is arranged on the lower walking frame; the lifting structure is vertically fixed on the rotating structure; the rotating structure drives the lifting structure to rotate and then drives the upper working frame to rotate.

[0010] Furthermore, the rotating structure includes a rotating bearing seat, a rotating platform and a rotating cylinder;

[0011] The rotating bearing seat is fixed on the lower walking frame;

[0012] The rotating platform is a flat plate structure, and a vertical rotating shaft is arranged at the center thereof; the rotating shaft is installed on the rotating bearing seat;

[0013] The rotating oil cylinder is arranged on the side of the rotating platform; the fixed end of the rotating oil cylinder is connected to the lower walking frame, and the telescopic end of the rotating oil cylinder is hinged to the rotating platform; the telescopic end of the rotating oil cylinder drives the rotating platform to rotate with the axis of the rotating bearing seat as the center of the circle, thereby completing the rotational movement of the rotating structure.

[0014] Furthermore, the outer wall of the rotating bearing seat is fixedly connected to the lower walking frame, and two upper and lower bearings are arranged inside the rotating bearing seat, and the rotating platform is rotatably supported by the two bearings.

[0015] Further, the lifting structure includes a lifting cylinder, a rotating sliding guide rail and a sliding sleeve;

[0016] The rotating sliding guide rail is vertically fixed on the rotating structure, and the rotating sliding guide rail is coaxially arranged with the rotating axis of the rotating platform;

[0017] The sliding sleeve is sleeved on the outer wall of the rotating sliding guide rail, and the upper working frame is fixedly mounted on the sliding sleeve;

[0018] One end of the lifting cylinder is fixed on the sliding sleeve, and the other end is connected to the upper surface of the rotating platform; the sliding sleeve is driven to move up and down along the rotating sliding guide rail through the extension and contraction of the lifting cylinder, thereby completing the lifting work of the upper working frame.

[0019] Furthermore, the sliding sleeve is provided with a plurality of guide rail sliders; the guide rail sliders are symmetrically arranged on the four side walls of the sliding sleeve;

[0020] The rotating sliding guide rail is a rectangular parallelepiped structure; the sliding sleeve is a square sleeve structure matched with the rotating sliding guide rail; the sliding sleeve is sleeved on the rotating sliding guide rail with intervals;

[0021] One end of the guide rail slider is arranged on the four side walls of the sliding sleeve; the other end is slidably connected with the outer wall of the rotating sliding guide rail.

[0022] Furthermore, the guide rail slider is threadedly connected to the sliding sleeve; by adjusting the position of the guide rail slider screwed into the sliding sleeve, the guide rail slider is made to fit with the outer wall of the rotating sliding guide rail.

[0023] Furthermore, guide pulleys are respectively provided on both sides of the upper working frame, and auxiliary guide rails matching with the guide pulleys are respectively provided on both sides of the lower walking frame;

[0024] The fixed end of the guide pulley is fixedly connected to the upper working frame, and the other end thereof is provided with a pulley;

[0025] The auxiliary guide rail is vertically fixed on the lower walking frame, and the upper part thereof is provided with an opening-shaped structure extending outward, and the main structure thereof is two parallel rails arranged in the vertical direction.

[0026] Furthermore, it also includes a locking mechanism, which includes a fixing frame, a plug plate and a lock body;

[0027] The lower end of the fixing frame is fixed on the lower walking machine frame; the upper part of the fixing frame is fixed with a lock body;

[0028] The plug plate is fixed on the locking end of the upper working frame;

[0029] When the inserting plate moves to the upper side of the fixing frame along with the upper working frame, the inserting plate is inserted into the lock body, thereby locking the upper working frame with the locking mechanism.

[0030] Furthermore, the lock body includes an unlocking cylinder, a lock plate, a positioning column, a lock hook and a spring;

[0031] The lock hook is fixed on the top of the fixing frame; the lock hook is used in conjunction with the plug board to hook the plug board;

[0032] The middle part of the lock plate is hinged to the lock hook through a hinge shaft, the end of the lock plate away from the lock hook is connected to the upper end of the spring, and the lower end of the spring is connected to the fixing frame; under the pull of the spring, the end of the lock plate close to the lock hook tilts upward; a locking structure is formed between the lock plate and the lock hook to lock the plug plate on the upper working frame;

[0033] The positioning column is fixed below the lock plate and close to the spring. Under the pull of the spring, one end of the lock plate away from the lock hook overlaps the positioning column.

[0034] The unlocking cylinder is fixed on a fixing frame; the telescopic end of the unlocking cylinder is located below the lock plate and close to the spring. When the unlocking cylinder is extended, the telescopic end of the unlocking cylinder pushes the lock plate upward, causing the lock plate to rotate and thereby releasing the lock on the plug plate.

[0035] The present invention can achieve the following beneficial effects:

[0036] The rotatable frame of the present invention can make the upper working frame rotate 90 degrees by lifting and rotating, so as to quickly switch between the transportation state and the working state, effectively solving the problem of excessive width of agricultural machinery during transportation, improving the transportation and working efficiency of agricultural machinery, saving time, reducing the risk of traffic accidents and damage, and also reducing the occupation of roads and bridges, which is beneficial to traffic safety.

[0037] The rotatable frame of the present invention has a simple structure and is easy to operate. The lifting, rotation and locking of the upper working frame can be achieved by simply controlling the extension and retraction of the lifting cylinder, the rotating cylinder and the unlocking cylinder. There is no need to disassemble or fold the parts of the agricultural machinery, nor is there a need to use special transport vehicles or trailers. This reduces the structural complexity and operating difficulty of the agricultural machinery, and also reduces the maintenance cost and failure risk of the agricultural machinery. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the structure of the rotatable frame in the transport state disclosed in the present invention;

[0039] Figure 2 It is a schematic diagram of the working state structure of the rotatable frame disclosed in the present invention;

[0040] Figure 3 A side view of the rotatable frame disclosed in the present invention in a transport state;

[0041] Figure 4 It is a structural schematic diagram of the rotating structure of the rotatable frame disclosed in the present invention;

[0042] Figure 5 It is a structural schematic diagram of the lifting structure of the rotatable frame disclosed in the present invention;

[0043] Figure 6 It is a schematic diagram of the structure of the sliding sleeve and the guide rail slider of the rotatable frame disclosed in the present invention;

[0044] Figure 7 It is a structural schematic diagram of the locking mechanism of the rotatable frame disclosed in the present invention;

[0045] Figure 8 It is a schematic structural diagram of the locking state of the locking mechanism of the rotatable frame disclosed in the present invention;

[0046] Fig. 9 It is a structural schematic diagram of the unlocking state of the locking mechanism disclosed in the present invention;

[0047] Fig.10 It is a schematic diagram of the assembly structure of the guide rail slider of the locking mechanism disclosed in the present invention;

[0048] Fig.11It is a cross-sectional view of the assembly structure of the guide rail slider of the locking mechanism disclosed in the present invention.

[0049] In the figure:

[0050] 1. Upper working frame; 2. Lower walking frame; 3. Rotating structure; 301. Rotating bearing seat; 302. Rotating platform; 303. Rotating cylinder; 4. Lifting structure; 401. Lifting cylinder; 402. Rotating sliding guide rail; 403. Sleeve; 5. Fixed frame; 6. Insert plate; 7. Lock body; 701. Unlocking cylinder; 702. Locking plate; 703. Positioning column; 704. Lock hook; 705. Spring; 8. Auxiliary guide rail; 9. Guide pulley; 10. Guide rail slider; 11. Fastening bolts; 12. Buckle cover. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation of the present invention.

[0052] refer to Figure 1-11 , a rotatable frame for agricultural machinery, comprising a lower walking frame 2, an upper working frame 1, a lifting structure 4 and a rotating structure 3; when using the rotatable frame of the present invention, it can be quickly switched between the transport or walking state and the working state as needed. When in the transport state, the upper working frame 1 is arranged along the length direction of the lower walking frame 2, so that the width of the rotatable frame is small, which is convenient for passing through narrow sections during transportation; when in the working state, the upper working frame 1 is first raised in height, and then rotated 90 degrees to be perpendicular to the length direction of the lower walking frame 2, which is convenient for agricultural work;

[0053] The lower walking frame 2 is the supporting structure of the rotatable frame and the basic part of the rotatable frame. It is responsible for the walking and transportation of the rotatable frame. Its front end is connected to the traction equipment, and its lower part is provided with wheels or tracks to adapt to different terrains and road conditions.

[0054] The upper working frame 1 is a rectangular or trapezoidal frame structure, and various agricultural machinery components and devices can be installed on its upper part, and used as a working platform for agricultural machinery;

[0055] The rotating structure 3 is arranged on the lower walking frame 2; the lifting structure 4 is arranged on the rotating structure 3, and the upper working frame 1 is connected to the lifting structure 4; the rotating structure 3 drives the lifting structure 4 to rotate and then drives the upper working frame 1 to rotate, thereby changing the position of the upper working frame 1.

[0056] For further reference, Figure 1-2 and Figure 4-5The rotating structure 3 includes a rotating bearing seat 301, a rotating platform 302 and a rotating cylinder 303.

[0057] The rotating bearing seat 301 is arranged on the lower walking frame 2; the rotating platform 302 is a flat plate structure, and a vertical rotating shaft is arranged at its center position; the rotating shaft is installed on the rotating bearing seat 301; the rotating cylinder 303 is arranged on the side of the rotating platform 302; the fixed end of the rotating cylinder 303 is connected to the lower walking frame 2, and the telescopic end of the rotating cylinder 303 is hinged to the rotating platform 302; the telescopic end of the rotating cylinder 303 drives the rotating platform 302 to rotate, thereby completing the rotation movement of the rotating structure 3.

[0058] Furthermore, the rotating bearing seat 301 is cylindrical in shape, and two upper and lower bearings are arranged inside it. The rotating axis of the rotating platform 302 is coaxially installed on the upper and lower bearings; the outer wall of the rotating bearing seat 301 is fixedly connected to the lower walking frame 2.

[0059] For further reference, Figure 1 and Figure 5-6 , the lifting structure 4 includes a lifting cylinder 401, a rotating sliding guide rail 402 and a sliding sleeve 403;

[0060] The rotating sliding guide rail 402 is vertically fixed on the rotating structure 3, and the rotating sliding guide rail 402 and the rotating platform 302 rotate about the same rotation axis; the sliding sleeve 403 is sleeved on the outer wall of the rotating sliding guide rail 402, the fixed end of the lifting cylinder 401 is fixed on the sliding sleeve 403, and the telescopic end of the lifting cylinder 401 is connected to the upper surface of the rotating platform 302; the sliding sleeve 403 is driven to move up and down along the rotating sliding guide rail 402 by the telescopic movement of the lifting cylinder 401;

[0061] The upper working frame 1 is fixed on the sliding sleeve 403, and the rotating sliding guide rail 402 plays a guiding role in the vertical direction, so that the upper working frame 1 moves up and down along the rotating sliding guide rail 402; thereby completing the lifting and lowering work of the lifting structure 4; at the same time, the rotating sliding guide rail 402 is connected to the rotating platform 302 of the rotating structure 3. When the rotating structure 3 rotates, the rotating sliding guide rail 402 plays a role in transmitting torque, driving the upper working frame 1 to rotate.

[0062] For further reference, Figure 3 and Figure 6 , a guide rail slider 10 is also provided on the sliding sleeve 403; the guide rail sliders 10 are symmetrically arranged on the four side walls of the sliding sleeve 403; in this embodiment, there are eight guide rail sliders 10, and two are arranged on each side wall of the sliding sleeve 403; in another embodiment, there are sixteen guide rail sliders 10, and four are arranged on each side wall of the sliding sleeve 403, and the four guide rail sliders 10 on each side wall are divided into upper and lower parts and installed on the upper and lower parts of the sliding sleeve 403;

[0063] The rotating sliding guide rail 402 is a rectangular parallelepiped structure; the sliding sleeve 403 is a square sleeve structure matched with the rotating sliding guide rail 402; the sliding sleeve 403 is sleeved on the rotating sliding guide rail 402 with a gap;

[0064] One end of the guide rail slider 10 is arranged on the side wall of the sliding sleeve 403; the other end passes through the sliding sleeve 403 and is slidably connected to the outer wall of the rotating sliding guide rail 402; the number and position of the guide rail sliders 10 affect the lifting stability and balance of the upper working frame 1, and the material and surface treatment of the guide rail sliders 10 will also affect the friction force when sliding relative to the rotating sliding guide rail 402. In actual work, the material of the guide rail slider 10 is made of wear-resistant steel, and its contact surface position is polished.

[0065] For further reference, Figure 6 and Figure 10-11 The guide rail slider 10 is a cylindrical structure with external threads, and one end thereof close to the rotating sliding guide rail 402 is the top end, and the other end is the tail end; the top end of the guide rail slider 10 is a planar structure for sliding connection with the outer wall of the rotating sliding guide rail 402, and a threaded hole for installing the guide rail slider 10 is provided on the outer wall of the sliding sleeve 403. The guide rail slider 10 is screwed into the threaded hole and is threadedly connected with the sliding sleeve 403. The distance between the top end of the guide rail slider 10 and the outer wall of the rotating sliding guide rail 402 can be controlled by adjusting the position of the guide rail slider 10 screwed into the threaded hole;

[0066] Compared with the inner wall of the sliding sleeve 403 directly slidingly connected to the outer wall of the rotating sliding guide rail 402, the guide rail slider 10 reduces the contact area and reduces the friction during the lifting movement. The guide rail slider 10 is screwed into the threaded hole opened on the outer wall of the sliding sleeve 403 so that the top of the guide rail slider 10 fits with the outer wall of the rotating sliding guide rail 402. In this way, there is no gap between the two during the lifting movement, which reduces the shaking during the work process and makes the lifting work more stable.

[0067] For further reference, Figure 6 and Figure 10-11 The tail end of the guide rail slider 10 is provided with two threaded holes for connecting two fastening bolts 11, and the tail end of the guide rail slider 10 is also provided with a buckle cover 12;

[0068] Specifically, the buckle cover 12 is a circular cover-shaped structure; the buckle cover 12 is provided with two through holes, and the positions of the two through holes are adapted to the positions of the two threaded holes provided at the rear end of the guide rail slider 10, and the two fastening bolts 11 can pass through the two through holes on the buckle cover 12 and be screwed into the two threaded holes provided at the rear end of the guide rail slider 10; at this time, tightening the two fastening bolts 11 can press the buckle cover 12 onto the outer wall of the sliding sleeve 403; since tightening the two fastening bolts 11 will generate a pre-tightening force on the guide rail slider 10, this pre-tightening force will make the threaded connection between the guide rail slider 10 and the sliding sleeve 403 more stable and not easy to loosen;

[0069] It should be noted that the inner diameter of the buckle cover 12 is larger than the outer diameter of the guide rail slider 10. The buckle cover 12 can cover the entire rear end of the guide rail slider 10 to prevent external impact or debris from approaching the rear end of the guide rail slider 10; it plays a protective role for the rear end of the guide rail slider 10.

[0070] For further reference, Figure 1-3 , guide pulleys 9 are respectively arranged on both sides of the upper working frame 1, and auxiliary guide rails 8 matching with the guide pulleys 9 are respectively arranged on both sides of the lower walking frame 2,

[0071] The fixed end of the guide pulley 9 is fixedly connected to the upper working frame 1, and the other end thereof is provided with a pulley, and the outside of the pulley is provided with a groove or protrusion matching with the auxiliary guide rail 8;

[0072] The auxiliary guide rail 8 is vertically fixed on the lower walking frame 2, and its upper part has an opening-shaped structure extending outward, and its main structure is two parallel rails arranged in the vertical direction;

[0073] When the upper working frame 1 is lifting and lowering, the guide pulley 9 moves along the auxiliary guide rail 8; it plays a guiding role for the upper working frame 1. It should be noted that in the working state, the upper working frame 1 drops to the lowest point; the guide pulley 9 is located in the auxiliary guide rail 8. At this time, the guide pulley 9 can also play a limiting role, so that the upper working frame 1 and the lower walking frame 2 form a whole through the guide pulley 9 and the auxiliary guide rail 8, preventing the upper working frame 1 from excessive relative movement with the lower walking frame 2 during operation, thereby improving the stability of the upper working frame 1 during operation.

[0074] For further reference, Figure 1-3 and Figure 7-9 , and also includes a locking mechanism, which includes a fixing frame 5, a plug plate 6 and a lock body 7;

[0075] The lower end of the fixed frame 5 is fixed on the lower walking frame 2; the upper part of the fixed frame 5 is fixed with a lock body 7;

[0076] The plug plate 6 is fixed to the locking end of the upper working frame 1;

[0077] When the rotatable frame needs to be transported, the insert plate 6 moves with the upper working frame 1 to the top of the fixed frame 5, and the insert plate 6 is inserted into the lock body 7, thereby locking the upper working frame 1 with the locking mechanism; the locking mechanism can stably fix the upper working frame 1 and improve safety during transportation.

[0078] Furthermore, the lock body 7 includes an unlocking cylinder 701, a lock plate 702, a positioning column 703, a lock hook 704 and a spring 705;

[0079] The lock hook 704 is a steel plate with a curved hook shape, which is fixed to the top of the fixing frame 5; the lock hook 704 is used in conjunction with the plug board 6 to hook the plug board 6;

[0080] The locking plate 702 is a rectangular plate-shaped structure; the middle part of the locking plate 702 is hinged to the locking hook 704 through a hinge axis, and the end of the locking plate 702 away from the locking hook 704 is connected to the upper end of the spring 705, and the lower end of the spring 705 is connected to the fixing frame 5; the spring 705 is in a stretched state; under the pulling of the spring 705, the end of the locking plate 702 close to the locking hook 704 tilts upward; when the plug plate 6 on the upper working frame 1 moves to the position of the locking hook 704, the front end of the plug plate 6 is hooked by the locking hook 704, and the rear end of the plug plate 6 is blocked by the upward tilted end of the locking plate 702; a locking structure is formed between the locking plate 702 and the locking hook 704 to lock the plug plate 6 on the upper working frame 1;

[0081] The positioning column 703 is fixed below the lock plate 702 and close to the spring 705. Under the pull of the spring 705, the end of the lock plate 702 away from the lock hook 704 overlaps the positioning column 703. The position of the positioning column 703 determines the initial position of the lock plate 702.

[0082] The unlocking cylinder 701 is fixed on the fixing frame 5; the telescopic end of the unlocking cylinder 701 is located below the lock plate 702 and close to the spring 705. When the unlocking cylinder 701 is extended, the telescopic end of the unlocking cylinder 701 pushes the lock plate 702 upward, so that the lock plate 702 rotates to release the lock of the plug plate 6, thereby releasing the upper frame fixing frame 5;

[0083] When the telescopic end of the unlocking cylinder 701 is retracted downward, as the telescopic end of the unlocking cylinder 701 moves downward, the locking plate 702 gradually rotates under the pull of the spring 705, and finally, under the pull of the spring 705, the end of the locking plate 702 away from the locking hook 704 overlaps the positioning column 703. At this time, the locking plate 702 returns to its initial position and forms a locking structure with the locking hook 704.

[0084] The use process of the rotatable rack of the present application is divided into two steps, namely, switching from the transport state to the working state, and switching from the working state to the transport state. The specific operation method is as follows:

[0085] Switching from the transport state to the working state: First, control the piston rod of the unlocking cylinder 701 to extend, push the lock plate 702 open, so that the plug plate 6 on the upper working frame 1 is not restricted; then, control the piston rod of the rotating cylinder 303 to retract, drive the rotating sliding guide rail 402 to rotate the upper working frame 1 90 degrees clockwise; finally, control the piston rod of the lifting cylinder 401 to retract, drive the upper working frame 1 to move downward along the rotating sliding guide rail 402, and the guide pulleys 9 on both sides slide into the auxiliary guide rail 8 until the lifting cylinder 401 is retracted to the minimum stroke. At this time, the upper working frame 1 has completed the switch from the transport or walking state to the working state, and the corresponding agricultural operations can be carried out.

[0086] Switching from working state to transport state: First, the piston rod of the lifting cylinder 401 is controlled to extend, driving the upper working frame 1 to move upward along the rotating sliding guide rail 402, and the guide pulleys 9 on both sides slide out of the auxiliary guide rail 8 until the lifting cylinder 401 extends to the maximum stroke; then, the piston rod of the rotating cylinder 303 is controlled to extend, driving the rotating sliding guide rail 402 and the upper working frame 1 to rotate 90 degrees counterclockwise; at this time, the plug plate 6 on the upper working frame 1 is inserted into the lock hook 704 on the lock body 7, the front end of the plug plate 6 is hooked by the lock hook 704, and the rear end of the plug plate 6 is blocked by the upward end of the lock plate 702; a locking structure is formed between the lock plate 702 and the lock hook 704, locking the plug plate 6 on the upper working frame 1; and fixing the upper working frame 1 with the lower walking frame 2. At this time, the upper working frame 1 has completed the switch from the working state to the transport or walking state, and can be transported or walked accordingly.

[0087] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" 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 present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0088] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. Those skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0089] The above specific implementations of the present invention do not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A rotatable frame for agricultural machinery, characterized in that: It comprises a lower walking frame (2), an upper working frame (1), a lifting structure (4) and a rotating structure (3); The lower walking frame (2) serves as a supporting structure of the rotatable frame, and its front end is connected to the traction device; The upper working frame (1) is connected to the lifting structure (4), and the upper working frame (1) is used to carry parts of agricultural machinery; the lifting structure (4) drives the upper working frame (1) to move up and down; The rotating structure (3) is arranged on the lower walking frame (2); the lifting structure (4) is vertically fixed on the rotating structure (3); the rotating structure (3) drives the lifting structure (4) to rotate and then drives the upper working frame (1) to rotate; The lifting structure (4) comprises a lifting cylinder (401), a rotating sliding guide rail (402) and a sliding sleeve (403); the rotating sliding guide rail (402) is vertically fixed on the rotating platform (302) of the rotating structure (3), and the rotating sliding guide rail (402) and the rotating platform (302) rotate about the same rotation axis; The sliding sleeve (403) is sleeved on the outer wall of the rotating sliding guide rail (402), and the upper working frame (1) is fixedly mounted on the sliding sleeve (403); One end of the lifting cylinder (401) is fixed on the sliding sleeve (403), and the other end is connected to the upper surface of the rotating platform (302); the sliding sleeve (403) is driven to move up and down along the rotating sliding guide rail (402) by the extension and retraction of the lifting cylinder (401), thereby completing the lifting work of the upper working frame (1); A plurality of guide rail sliders (10) are arranged on the sliding sleeve (403); the guide rail sliders (10) are symmetrically arranged on the side wall of the sliding sleeve (403); The rotating sliding guide rail (402) is a rectangular parallelepiped structure; the sliding sleeve (403) is a square sleeve structure matched with the rotating sliding guide rail (402); the sliding sleeve (403) is sleeved on the rotating sliding guide rail (402) with a gap; One end of the guide rail slider (10) is arranged on the outer surface of the four side walls of the sliding sleeve (403); the other end passes through the sliding sleeve (403) and is slidably connected to the outer wall of the rotating sliding guide rail (402); The guide rail slider (10) is threadedly connected to the sliding sleeve (403); the position of the guide rail slider (10) screwed into the sliding sleeve (403) is adjusted so that the guide rail slider (10) fits the outer wall of the rotating sliding guide rail (402); the tail end of the guide rail slider (10) is provided with two threaded holes for connecting two fastening bolts (11), and the tail end of the guide rail slider (10) is also provided with a buckle cover (12); the two fastening bolts (11) pass through two through holes on the buckle cover (12) and are screwed into the two threaded holes provided at the tail end of the guide rail slider (10); the two fastening bolts (11) are tightened to press the buckle cover (12) onto the outer wall of the sliding sleeve (403); the inner diameter of the buckle cover (12) is larger than the outer diameter of the guide rail slider (10); Guide pulleys (9) are respectively provided on both sides of the upper working frame (1), and auxiliary guide rails (8) matched with the guide pulleys (9) are respectively provided on both sides of the lower walking frame (2); The fixed end of the guide pulley (9) is fixedly connected to the upper working frame (1), and the other end is provided with a pulley; The auxiliary guide rail (8) is vertically fixed on the lower walking frame (2), and has an opening-shaped structure extending outward on its upper part, and its main structure is two parallel rails arranged in the vertical direction; The rotating structure (3) comprises a rotating bearing seat (301), a rotating platform (302) and a rotating oil cylinder (303); The rotating bearing seat (301) is fixed on the lower walking frame (2); The rotating platform (302) is a flat plate structure, and a vertical rotating shaft is arranged at the center thereof; the rotating platform (302) is installed on the rotating bearing seat (301) via the rotating shaft; The rotating oil cylinder (303) is arranged on the side of the rotating platform (302); the fixed end of the rotating oil cylinder (303) is connected to the lower walking frame (2), and the telescopic end of the rotating oil cylinder (303) is hinged to the rotating platform (302); the telescopic end of the rotating oil cylinder (303) drives the rotating platform (302) to rotate, thereby completing the rotating movement of the rotating structure (3); The outer wall of the rotating bearing seat (301) is fixedly connected to the lower walking frame (2), and two upper and lower bearings are arranged inside the rotating bearing seat, and the rotating platform (302) is rotatably supported by the two bearings; The rotatable frame for agricultural machinery also includes a locking mechanism, which includes a fixing frame (5), a plug plate (6) and a lock body (7); The lower end of the fixing frame (5) is fixed on the lower walking machine frame (2); the upper part of the fixing frame (5) is fixed with a lock body (7); The plug plate (6) is fixed on the locking end of the upper working frame (1); When the inserting plate (6) moves with the upper working frame (1) to the upper side of the fixed frame (5), the inserting plate (6) is inserted into the lock body (7), thereby locking the upper working frame (1) and the locking mechanism; The lock body (7) comprises an unlocking cylinder (701), a lock plate (702), a positioning column (703), a lock hook (704) and a spring (705); The locking hook (704) is fixed to the top of the fixing frame (5); the locking hook (704) is used in conjunction with the plug board (6) to hook the plug board (6); The middle part of the lock plate (702) is hinged to the lock hook (704) via a hinge shaft, and the end of the lock plate (702) away from the lock hook (704) is connected to the upper end of the spring (705), and the lower end of the spring (705) is connected to the fixing frame (5); under the pull of the spring (705), the end of the lock plate (702) close to the lock hook (704) is tilted upward; a locking structure is formed between the lock plate (702) and the lock hook (704), and the plug plate (6) on the upper working frame (1) is locked; The positioning column (703) is fixed at a position below the locking plate (702) and close to the spring (705). Under the pull of the spring (705), one end of the locking plate (702) away from the locking hook (704) overlaps the positioning column (703); The unlocking oil cylinder (701) is fixed on the fixing frame (5); the telescopic end of the unlocking oil cylinder (701) is located below the locking plate (702) and close to the spring (705); when the unlocking oil cylinder (701) is extended, the telescopic end of the unlocking oil cylinder (701) pushes the locking plate (702) upward, causing the locking plate (702) to rotate, thereby releasing the lock on the plug plate (6).

Images