Side transmission case assembly of rotary cultivator

Abstract

The utility model discloses a side transmission case assembly of a rotary cultivator. The side transmission case assembly comprises a side transmission case and a case cover fixed on the side transmission case, the transmission case side plate and the transmission case body are welded into a whole by the side transmission case; an input shaft, a middle shaft and an output shaft are arranged on each of the two sides of the side transmission box from top to bottom; the input shaft is fixedly connected with an input gear, the input gear is meshed with an intermediate gear, the intermediate shaft is fixedly connected with the intermediate gear, the output shaft is provided with an output gear, and the intermediate gear is meshed with the output gear and drives the output shaft to rotate; and the output shaft is connected with a cutter shaft through a spline. The design that the transmission case side plates and the transmission case body are welded into a whole is adopted, the phenomenon of oil leakage caused by uneven surfaces after the side plates are welded is avoided, and therefore the reliability of the rotary cultivator is improved.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of agricultural machinery and equipment, in particular to a side transmission box assembly of a rotary tiller. Background Art

[0002] A rotary tiller is a machine that is matched with a tractor and uses the power output of its PTO to complete rotary tillage and soil crushing. According to the power transmission method, it can be divided into: side transmission box rotary tiller and middle transmission box rotary tiller.

[0003] At present, there are two main types of side transmission boxes used in rotary tillers: (1) stamped cover plate type side transmission box; (2) integral cast type transmission box. These two types of transmission boxes have the following defects: Stamped type: (1) The surface of the side plate is uneven after welding, and the joint surface of the stamped cover plate is prone to oil leakage; (2) All three shafts are cantilever shafts, and the gear meshing clearance will change after operation, thereby aggravating gear wear and causing the reliability of the rotary tiller to deteriorate. Cast type: The weight is relatively heavy, resulting in a large weight deviation on both sides of the rotary tiller and poor working stability. In view of the defects of the above-mentioned side transmission boxes, our company optimized the side transmission box and designed a side transmission box assembly for rotary tillers. Utility Model Content

[0004] The purpose of the utility model is to provide a side transmission box assembly of a rotary tiller in view of the defects and shortcomings of the prior art, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a side transmission box assembly of a rotary tiller, the innovation of which lies in that it includes a side transmission box and a box cover fixed on the side transmission box; the side transmission box is arranged as a structure in which the transmission box side plate and the transmission box body are welded as one; a group of input mounting holes, a group of intermediate mounting holes and a group of output mounting holes are arranged on both sides of the side transmission box from top to bottom respectively; an input shaft, an intermediate shaft and an output shaft are respectively installed in the input mounting holes, the intermediate mounting holes and the output mounting holes; an input gear is fixedly connected to the input shaft, the input gear is meshed with an intermediate gear, the intermediate shaft is fixedly connected to the intermediate gear, an output gear is arranged on the output shaft, the intermediate gear is meshed with the output gear and drives the output shaft to rotate; the output shaft is connected to the knife shaft through a spline.

[0006] Furthermore, an oil mark is provided on the side transmission box.

[0007] Furthermore, the box cover is fixed to the side transmission box by means of bolts, spring washers and locking nuts; and a breathable cap is provided on the box cover.

[0008] Furthermore, the side transmission box welds the transmission box side plate and the transmission box body into one body, and a sealing gasket is arranged between the box cover and the side transmission box.

[0009] Furthermore, a connecting pipe is installed at the input mounting hole of the side transmission box, the input shaft is rotatably connected in the connecting pipe through a ball bearing, and a small oil seal and a small oil seal flange are connected to the end of the connecting pipe.

[0010] Furthermore, the input shaft, the intermediate shaft and the output shaft are all rotationally connected to the side transmission box via tapered bearings.

[0011] Furthermore, an oil drain bolt is provided below the side transmission box.

[0012] Furthermore, the side transmission box is installed with a large oil seal flange, a large oil seal and a mud and water oil seal at the output mounting hole.

[0013] Furthermore, the side transmission box is respectively connected with a pressure cover at an input mounting hole, a middle mounting hole and an output mounting hole.

[0014] After adopting the above structure, the utility model has the following beneficial effects:

[0015] (1) The side transmission box assembly of the rotary tiller of the utility model is provided with a vent cap to ensure that the lubricating oil is heated and exhausted in time during operation, thereby preventing the oil seal from overheating and failing and causing oil leakage.

[0016] (2) The utility model adopts a design in which the side panels of the transmission box are welded to the transmission box body as an integral whole, thereby avoiding oil leakage caused by the uneven surface of the side panels after welding (compared with a stamped transmission box), thereby improving the reliability of the rotary tiller; the weight of the transmission box is reduced by one third compared with a cast transmission box, reducing the weight difference between the left and right sides of the rotary tiller, and making the operation more stable and reliable.

[0017] (3) The utility model adopts a double support structure at the input shaft, the intermediate shaft, and the output shaft, which can ensure that the meshing clearance of the gear pair is consistent when working, and avoid the premature wear of the gear caused by the inconsistent meshing clearance of the gear caused by the cantilever shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a side view of the utility model.

[0020] Explanation of the accompanying drawings: 1. Bolt; 2. Spring washer; 3. Lock nut; 4. Box cover; 5. Side transmission box; 6. Breathing cap; 7. Oil mark; 8. Sealing gasket; 9. Input shaft; 10. Small oil seal flange; 11. Small oil seal; 12. Ball bearing; 13. Small flange gasket; 14. Connecting pipe; 15. Adjusting gasket; 16. Tapered bearing; 17. Input gear; 18. Pressure cover; 19. Intermediate shaft; 20. Intermediate gear; 21. Output shaft; 22. Output gear; 23. Combined gasket; 24. Drain bolt; 25. Large tapered bearing; 26. Large adjusting gasket; 27. Large oil seal flange; 28. Large oil seal; 29. ​​Mud and water oil seal. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings.

[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. It should be understood that the specific implementation methods described here are only used to explain the utility model and are not used to limit the utility model.

[0023] See also Figure 1 and Figure 2 The utility model provides a technical solution: a side transmission box assembly of a rotary tiller, comprising a side transmission box 5, a box cover 4 fixed on the side transmission box 5; a breathable cap 6 is provided on the box cover 4; a group of input mounting holes, a group of intermediate mounting holes, and a group of output mounting holes are respectively provided on both sides of the side transmission box 5 from top to bottom; an input shaft 9, an intermediate shaft 19 and an output shaft 21 are respectively installed in the input mounting holes, the intermediate mounting holes, and the output mounting holes; an input gear 17 is fixedly connected to the input shaft 9, the input gear 17 is meshed with an intermediate gear 20, the intermediate shaft 19 is fixedly connected to the intermediate gear 20, an output gear 22 is provided on the output shaft 21, the intermediate gear 20 is meshed with the output gear 22 and drives the output shaft 21 to rotate; the output shaft 21 is connected to the knife shaft through a spline. The utility model adopts a design in which the transmission box side plate is welded to the transmission box body as one body, so as to avoid oil leakage caused by uneven surface of the side plate after welding (compared with stamping transmission box), thereby improving the reliability of the rotary tiller; the weight of the transmission box is reduced by one third compared with the casting transmission box, and the weight difference between the left and right sides of the rotary tiller is reduced, so that the operation is more stable and reliable. The double support structure is adopted at the input shaft 9, the intermediate shaft 19, and the output shaft 21, which can ensure that the meshing clearance of the gear pair is consistent when working, and avoid the premature wear of the gear caused by the inconsistent meshing clearance of the gear caused by the cantilever shaft.

[0024] In a further embodiment of the present invention, an oil mark 7 is provided on the side transmission box 5 .

[0025] In a further embodiment of the present invention, the box cover 4 is fixed to the side transmission box 5 by means of bolts 1 , spring washers 2 , and locking nuts 3 .

[0026] In a further embodiment of the utility model, the side transmission box 5 is configured as a structure in which the transmission box side plate and the transmission box body are welded together, and a sealing gasket 8 is provided between the box cover 4 and the side transmission box 5. The side transmission box assembly of the rotary tiller of the utility model is provided with a vent cap 6 to ensure that the lubricating oil is heated and exhausted in time during operation to avoid oil leakage caused by overheating and failure of the oil seal.

[0027] In a further embodiment of the utility model, the side transmission box 5 is installed with a connecting pipe 14 at the input mounting hole, and an adjustment pad 15 is provided at the connection between the connecting pipe 14 and the input mounting hole; the input shaft 9 is rotatably connected in the connecting pipe 14 through a ball bearing 12, and a small oil seal 11 and a small oil seal flange 10 are connected to the end of the connecting pipe 14, and a small flange gasket 13 is provided at the connection between the small oil seal flange 10 and the connecting pipe 14.

[0028] In a further embodiment of the utility model, the input shaft 9, the intermediate shaft 19 and the output shaft 21 are all rotatably connected to the side transmission box 5 through the tapered bearing 16. Preferably, the output shaft 21 uses a large tapered bearing 25 on one side connected to the large oil seal flange 27, and a common tapered bearing 16 on the other side, which can better play a supporting role and improve the stability of the entire structure.

[0029] In a further embodiment of the utility model, an oil drain bolt 24 is provided below the side transmission box 5 ; the oil drain bolt 24 is connected to the bottom of the side transmission box 5 through a combined washer 23 .

[0030] In a further embodiment of the utility model, the side transmission box 5 is installed with a large oil seal flange 27, a large oil seal 28 and a mud and water oil seal 29 at the output mounting hole; the large oil seal flange 27 is connected to the output mounting hole through a large adjustment pad 26.

[0031] In a further embodiment of the utility model, the side transmission box 5 is respectively connected to a pressure cover 18 at an input mounting hole, a middle mounting hole and an output mounting hole; and adjustment pads 15 are provided at the connection between the pressure cover 18 and the input mounting hole, the middle mounting hole and the output mounting hole.

[0032] The side transmission box 5 assembly of the rotary tiller of the utility model can be matched with various types of rotary tillers, and the installation is simple and convenient, and the performance is stable and reliable.

[0033] Before the side transmission box 5 works, lubricating oil is added to the side transmission box 5, and the amount of oil is added to two-thirds of the oil mark 7. During operation, the tractor PTO drives the transmission shaft to rotate, and the transmission shaft drives the gear box (not shown in the figure), and the gear box drives the input shaft 9 through the universal transmission shaft. The input shaft 9 receives the power transmitted by the gear box to drive the input gear 17 to rotate, and the input gear 17 drives the output gear 22 and the output shaft 21 to rotate through the intermediate gear 20, and the output shaft 21 drives the cutter shaft through the spline to perform rotary tillage.

[0034] The above description is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A side transmission box assembly of a rotary tiller, characterized in that: It includes a side transmission box and a box cover fixed on the side transmission box; the side transmission box is configured as a structure in which the transmission box side plate and the transmission box body are welded as one; a group of input mounting holes, a group of intermediate mounting holes and a group of output mounting holes are respectively arranged on both sides of the side transmission box from top to bottom; an input shaft, an intermediate shaft and an output shaft are respectively installed in the input mounting holes, the intermediate mounting holes and the output mounting holes; an input gear is fixedly connected to the input shaft, the input gear is meshed with an intermediate gear, the intermediate shaft is fixedly connected to the intermediate gear, an output gear is arranged on the output shaft, the intermediate gear is meshed with the output gear and drives the output shaft to rotate; the output shaft is connected to the knife shaft through a spline.

2. The side transmission box assembly of a rotary tiller according to claim 1, characterized in that: An oil mark is arranged on the side transmission box.

3. The side transmission box assembly of a rotary tiller according to claim 1, characterized in that: The box cover is fixed on the side transmission box by means of bolts, spring washers and locking nuts; a vent cap is arranged on the box cover.

4. The side transmission box assembly of a rotary tiller according to claim 1, characterized in that: A sealing gasket is arranged between the box cover and the side transmission box.

5. The side transmission box assembly of a rotary tiller according to claim 1, characterized in that: The input shaft, the intermediate shaft and both sides of the output shaft are rotatably connected to the side transmission box through tapered bearings.

6. The side transmission box assembly of a rotary tiller according to claim 1, characterized in that: An oil drain bolt is arranged below the side transmission box.

7. The side transmission box assembly of a rotary tiller according to claim 1, characterized in that: The side transmission box is provided with a connecting pipe at an input mounting hole, the input shaft is rotatably connected in the connecting pipe via a ball bearing, and the end of the connecting pipe is connected with a small oil seal and a small oil seal flange.

8. The side transmission box assembly of a rotary tiller according to claim 1, characterized in that: The side transmission box is respectively connected with a pressure cover at an input mounting hole, a middle mounting hole and an output mounting hole.

9. The side transmission box assembly of a rotary tiller according to claim 1, characterized in that: The side transmission box is equipped with a large oil seal flange, a large oil seal and a mud and water oil seal at the output mounting hole.

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