Connecting shaft transmission structure between rotary tillage mechanisms

Abstract

The utility model relates to the technical field of rotary cultivators, in particular to a connecting shaft transmission structure between rotary tillage mechanisms, which comprises a frame, a plurality of auxiliary transmission gear boxes equidistantly mounted on the left side of the frame through a support frame, rotary blades mounted at the lower ends of the auxiliary transmission gear boxes, and blade legs mounted at the lower end of the frame and corresponding to the positions of the rotary blades. According to the utility model, an original connecting shaft transmission structure is scientifically and reasonably improved, a long-shaft transmission shaft is improved into a plurality of sections of short transmission shafts which can be respectively arranged on the auxiliary transmission gear box, and the limiting bolts, the shaft sleeves, the limiting slots, the chain wheels and the chains are arranged among the transmission shafts; according to the rotary tillage mechanism, the transmission shafts among a plurality of rotary tillage mechanisms can be quickly connected with a shaft, the workload and difficulty of connecting shaft transmission of the rotary tillage mechanisms are effectively reduced, and therefore the convenience and efficiency of actual mounting and dismounting operation of the rotary tillage mechanisms are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary tillers, in particular to a shaft transmission structure between rotary tillers. Background Art

[0002] Rotary tillers are tilling machines that work with tractors to complete ploughing and harrowing operations. They are widely used because of their strong soil crushing ability and flat surface after ploughing. They can also cut up the root stubble buried below the surface, making it easier for the seeder to operate and providing a good seed bed for later sowing.

[0003] The multiple rotary tilling mechanisms installed on the previous generation of rotary tillers adopt a coaxial design, and are installed between the multiple rotary tilling mechanisms through a transmission shaft to realize the coupling transmission operation of the multiple rotary tilling mechanisms. However, this coupling transmission structure between the rotary tilling mechanisms has the following shortcomings in actual use: First, the manufacturing, use and transportation costs of the long-axis version of the transmission shaft are relatively high. Secondly, during the early assembly and processing of the equipment, the multiple rotary tilling mechanisms need to be positioned and installed on the frame before the transmission shaft can be installed. During this period, the installation accuracy needs to be ensured, otherwise there will be installation interference and transmission instability problems. At the same time, when a single rotary tilling mechanism needs to be disassembled for inspection and maintenance, the transmission shaft needs to be disassembled before subsequent work can be carried out. The entire installation and disassembly operation is laborious and laborious, which increases the workload and difficulty of the operator in actually installing and disassembling the rotary tilling mechanism.

[0004] In view of this, it is particularly important to design and manufacture a coupling transmission structure that can quickly establish a coupling connection between rotary tilling mechanisms and apply it to rotary tillers. Utility Model Content

[0005] The purpose of the utility model is to propose a coupling transmission structure between rotary tillage mechanisms in order to solve the problems that the actual manufacturing, use and transportation costs of the traditional rotary tillage mechanism are high, and the installation and disassembly operation of the rotary tillage mechanism is poor and the efficiency is low.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A coupling transmission structure between rotary tilling mechanisms comprises a frame, a plurality of auxiliary transmission gear boxes equidistantly installed on the left side of the frame through a support frame, rotary tilling blades installed at the lower ends of the plurality of auxiliary transmission gear boxes, knife legs installed at the lower end of the frame and corresponding to the positions of the plurality of rotary tilling blades, plow blades fixed at the lower ends of the plurality of knife legs, and a transmission part arranged between the frame and the auxiliary transmission gear boxes, wherein each of the plurality of auxiliary transmission gear boxes is equipped with a coaxially distributed transmission shaft, and a coupling transmission structure for establishing a structural connection between two sections of the transmission shafts is arranged between the transmission shafts of the plurality of auxiliary transmission gear boxes.

[0008] As a further description of the above technical solution:

[0009] The coupling transmission structure includes a limit pin disposed on the outer end of the transmission shaft, a sleeve movably mounted on the outer end of the transmission shaft, a limit slot disposed in the middle of the sleeve and corresponding to the limit pin, and a chain structure disposed between the outsides of the two sleeves.

[0010] As a further description of the above technical solution:

[0011] The chain structure includes a sprocket fixed on the outermost ends of two shaft sleeves, a plurality of chain links connected end to end and arranged between the outsides of the two sprockets, a chain shaft detachably installed between the connection points of the plurality of chain links and corresponding to the position of the sprocket tooth grooves, and a sleeve sleeved on the outside of the chain shaft and engaged with the sprocket tooth grooves.

[0012] As a further description of the above technical solution:

[0013] A protective sleeve is sleeved between the outsides of the two shaft sleeves to wrap the two shaft sleeves.

[0014] As a further description of the above technical solution:

[0015] The outside of the transmission shaft is clamped with a limiting clamp to prevent the shaft sleeve from axially deviating from the transmission shaft.

[0016] As a further description of the above technical solution:

[0017] The transmission part includes a main transmission gearbox installed at the middle of the left end of the frame and transmission-connected to the auxiliary transmission gearbox, a transmission connection box installed at the front end of the frame and used to establish a transmission connection with the tractor, and a universal shaft installed between the main transmission gearbox and the transmission connection box.

[0018] As a further description of the above technical solution:

[0019] A traction frame for establishing a structural connection with a tractor is installed at the upper end of the frame.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0021] In the utility model, the original coupling transmission structure is scientifically and rationally improved, a long-axis transmission shaft is improved into multiple short-section transmission shafts that can be respectively installed on the auxiliary transmission gear box, and a limit pin, a sleeve, a limit slot, a sprocket and a chain structure are arranged between the transmission shafts. The sleeve can be inserted into the limit pin on the transmission shaft through the limit slot, and then the chain structure is installed between the sprockets of the two sleeves. The two transmission shafts will establish a coupling connection. After the chain structure is removed from the two sleeves, the subsequent split disassembly operation of the auxiliary transmission gear box can be carried out. This structure can realize the rapid coupling operation of the transmission shafts between multiple rotary tillage mechanisms, effectively reducing the workload and difficulty of the coupling transmission of the rotary tillage mechanism, thereby improving the convenience and efficiency of the actual installation and disassembly operations of the rotary tillage mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the overall structure of the utility model in which the coupling transmission structure is installed on a rotary tiller;

[0023] Figure 2 It is a structural schematic diagram of the combination of the auxiliary transmission gear box and the coupling transmission structure in the utility model;

[0024] Figure 3 It is a three-dimensional disassembled schematic diagram of the auxiliary transmission gear box and the coupling transmission structure in the utility model.

[0025] Legend:

[0026] 1. Frame; 101. Traction frame; 2. Support frame; 3. Auxiliary transmission gear box; 301. Transmission shaft; 302. Limit latch; 4. Protective cover; 5. Rotary tiller; 6. Main transmission gear box; 601. Transmission connecting box; 602. Universal joint; 7. Cutter leg; 701. Plow blade; 8. Bushing; 801. Limit slot; 802. Sprocket; 9. Chain link; 901. Chain shaft; 902. Bushing; 10. Limit clamp. DETAILED DESCRIPTION

[0027] 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 of 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.

[0028] See also Figure 1-3The utility model provides a technical solution: a coupling transmission structure between rotary tillage mechanisms, comprising a frame 1, a plurality of auxiliary transmission gear boxes 3 equidistantly installed on the left side of the frame 1 through a support frame 2, a rotary tiller 5 installed at the lower ends of the plurality of auxiliary transmission gear boxes 3, a knife leg 7 installed at the lower end of the frame 1 and corresponding to the positions of the plurality of rotary tillage knives 5, a plow 701 fixed at the lower ends of the plurality of knife legs 7, and a transmission part arranged between the frame 1 and the auxiliary transmission gear box 3, a plurality of auxiliary transmission gear boxes 3 are each installed with a coaxially distributed transmission shaft 301, and a coupling transmission structure for establishing a structural connection between two sections of the transmission shaft 301 is arranged between the transmission shafts 301 of the plurality of auxiliary transmission gear boxes 3.

[0029] Specifically, Figure 1-3 As shown, the coupling transmission structure includes a limit pin 302 opened on the outer end of the transmission shaft 301, a sleeve 8 movably installed on the outer end of the transmission shaft 301, a limit slot 801 opened in the middle of the sleeve 8 and corresponding to the limit pin 302, and a chain structure arranged between the outsides of the two sleeves 8, wherein the chain structure includes a sprocket 802 fixed on the outermost ends of the two sleeves 8, a plurality of groups of chain links 9 connected end to end and arranged between the outsides of the two sprockets 802, a chain shaft 901 detachably installed between the connection points of the plurality of groups of chain links 9 and corresponding to the tooth groove position of the sprocket 802, and a sleeve 902 sleeved on the outside of the chain shaft 901 and engaged with the tooth groove of the sprocket 802.

[0030] A protective sleeve 4 is provided between the outside of the two sleeves 8 to wrap the two sleeves 8, which can make the connection between the two sleeves 8 waterproof and dustproof, avoiding the occurrence of dust accumulation and moisture rust on the chain structure and the sprocket 802, thereby improving the safety and stability of the use after the coupling is connected.

[0031] The outer portion of the transmission shaft 301 is clamped with a limiting clamp 10 to prevent the sleeve 8 from axially deviating from the transmission shaft 301.

[0032] Specifically, Figure 1 As shown, the transmission part includes a main transmission gearbox 6 installed in the middle of the left end of the frame 1 and connected to the auxiliary transmission gearbox 3, a transmission connection box 601 installed at the front end of the frame 1 and used to establish a transmission connection with the tractor, and a universal shaft 602 installed between the main transmission gearbox 6 and the transmission connection box 601. After the transmission connection box 601 establishes a transmission connection with the tractor, the universal shaft 602 can be driven to rotate. At this time, the main transmission gearbox 6 can drive the transmission shafts 301 of multiple shafts to rotate accordingly, and the multiple auxiliary transmission gearboxes 3 will work accordingly, driving the rotary blade 5 to rotate synchronously to break, scatter and throw the soil.

[0033] A traction frame 101 for establishing a structural connection with the tractor is installed at the upper end of the frame 1, which facilitates the assembly process between the rotary tiller body and the tractor body and improves the stability of the rotary tiller and the tractor after assembly.

[0034] Working principle: When it is necessary to establish a shaft connection between the auxiliary transmission gearboxes 3, the first step is to insert the sleeve 8 into the limiting pin 302 of the transmission shaft 301 on the corresponding auxiliary transmission gearbox 3 through the limiting slot 801, and then the auxiliary transmission gearbox 3 can be installed on the frame 1 at equal distances through the support frame 2;

[0035] Step 2: Snap the sleeve 902 on the long chain structure into the tooth groove of the sprocket 802. When the chain structure evenly wraps the sprockets 802 on the two shaft sleeves 8, the chain shaft 901 can be inserted and installed between the chain link 9 and the sleeve 902. At this time, the ring-shaped chain structure can be stably fixed between the two shaft sleeves 8, realizing the coupling and fixing operation of the two sections of the transmission shaft 301.

[0036] Step 3: movably install the protective cover 4 between the two shaft sleeves 8 to ensure that the chain structure and the connecting part of the sprocket 802 are not easily exposed to dust and water vapor in the external environment.

[0037] 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 rotary tillage mechanism inter-axle transmission structure, comprising a frame (1), a plurality of auxiliary transmission gear boxes (3) equidistantly mounted on the left side of the frame (1) via a support frame (2), rotary tillers (5) mounted at the lower ends of the plurality of auxiliary transmission gear boxes (3), blade legs (7) mounted at the lower end of the frame (1) and corresponding to the positions of the plurality of rotary tillers (5), a plow (701) fixed at the lower ends of the plurality of blade legs (7), and a transmission part arranged between the frame (1) and the auxiliary transmission gear box (3), characterized in that: Each of the plurality of auxiliary transmission gearboxes (3) is equipped with a coaxially distributed transmission shaft (301), and a coupling transmission structure is provided between each of the transmission shafts (301) of the plurality of auxiliary transmission gearboxes (3) to establish a structural connection between the two sections of the transmission shafts (301).

2. The rotary tillage mechanism inter-axle transmission structure according to claim 1, characterized in that: The coupling transmission structure comprises a limit pin (302) disposed on the outer end of a transmission shaft (301), a shaft sleeve (8) movably mounted on the outer end of the transmission shaft (301), a limit slot (801) disposed in the middle of the shaft sleeve (8) and corresponding to the limit pin (302), and a chain structure disposed between the outsides of the two shaft sleeves (8).

3. The inter-rotary tillage mechanism coupling transmission structure according to claim 2, characterized in that: The chain structure comprises a sprocket (802) fixed to the outermost ends of two shaft sleeves (8), a plurality of groups of chain links (9) connected end to end and arranged between the outsides of the two sprockets (802), a chain shaft (901) detachably installed between the connection points of the plurality of groups of chain links (9) and corresponding to the tooth groove position of the sprocket (802), and a sleeve (902) sleeved on the outside of the chain shaft (901) and engaged with the tooth groove of the sprocket (802).

4. The inter-rotary tillage mechanism coupling transmission structure according to claim 2, characterized in that: A protective sleeve (4) is sleeved between the outsides of the two shaft sleeves (8) and wraps around the two shaft sleeves (8).

5. The inter-rotary tillage mechanism coupling transmission structure according to claim 2, characterized in that: The outside of the transmission shaft (301) is clamped with a limiting clamp (10) for preventing the shaft sleeve (8) from axially deviating on the transmission shaft (301).

6. The shaft transmission structure between rotary tillage mechanisms according to claim 1, characterized in that: The transmission unit comprises a main transmission gearbox (6) installed at the middle of the left end of the frame (1) and transmission-connected to the auxiliary transmission gearbox (3), a transmission connection box (601) installed at the front end of the frame (1) and used to establish a transmission connection with the tractor, and a universal shaft (602) installed between the main transmission gearbox (6) and the transmission connection box (601).

7. The shaft transmission structure between rotary tillage mechanisms according to claim 1, characterized in that: A traction frame (101) for establishing a structural connection with a tractor is installed at the upper end of the frame (1).

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