Driven shaft combination

Abstract

The utility model relates to the technical field of agricultural machinery parts, in particular to a driven shaft combination which comprises a driven shaft, a driven gear and a harrow knife, and a first assembly component and a second assembly component are arranged at the upper end and the middle of the driven shaft respectively. The driven shaft is in assembly connection with a top plate of the lubricating oil tank through the first assembly assembly and is in assembly connection with a bottom plate of the lubricating oil tank through the second assembly assembly. According to the driven shaft combination disclosed by the utility model, the upper end and the middle part of the driven shaft are respectively assembled and connected with the lubricating oil tank through the first assembling component and the second assembling component, so that the stability of the driven shaft in the transmission process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural machinery accessories, in particular to a driven shaft combination. Background Art

[0002] A rotary tiller is an agricultural machine used to break up crop straw or soil in farmland. It is driven by the power output shaft of the front tractor (tractor). The power output shaft of the tractor transmits power to the rotary tillage assembly through the gear transmission pair on the rotary tiller. The gear transmission pair is located in the lubricating oil tank. The rotary tillage assembly consists of a driven gear, a driven shaft and a harrow. The driven gear and the harrow are located at both ends of the driven shaft respectively.

[0003] The driven gear is located in the lubricating oil tank and meshes with the driving gear for transmission. The harrow needs to perform rotary tillage operations on the farmland. Therefore, one end of the driven shaft on which the driven gear and the harrow are installed is located in the lubricating oil tank and the other end is located outside the lubricating oil tank. A sealed rotating connection is adopted between the driven shaft and the gear oil tank.

[0004] In the prior art, the driven shaft is connected to the lubricating oil tank through a group of assembly components, which are located in the middle of the driven shaft. The middle of the driven shaft is connected to the bottom of the lubricating oil tank through the assembly components. When the rotary tiller works under high load for a long time, the connection between the driven shaft and the lubricating oil tank is unstable and easily damaged, resulting in high cost of use.

[0005] Therefore, how to overcome the above-mentioned technical problems and defects becomes a key issue that needs to be solved. Utility Model Content

[0006] The purpose of the utility model is to provide a driven shaft assembly to solve the problems raised in the above background technology.

[0007] To achieve the above object, the utility model provides the following technical solution: a driven shaft assembly, comprising a driven shaft, a driven gear and a rake, wherein a first assembly component and a second assembly component are respectively arranged at the upper end and the middle part of the driven shaft;

[0008] The first assembly component comprises a driven bearing sleeve, a first flange bearing sleeve fastening plate, an oil seal support sleeve, a skeleton oil seal and a first spherical roller bearing; the driven bearing sleeve and the first flange bearing sleeve fastening plate are fixedly mounted on the inner and outer sides of the top plate of the lubricating oil tank by a plurality of fastening bolts, a center screw and a plurality of hexagon socket head screws evenly distributed around the center screw are arranged on the driven bearing sleeve, and an O-shaped rubber sealing ring is arranged on the lower end surface of the driven bearing sleeve; a positioning shoulder is arranged on the inner side of the first flange bearing sleeve fastening plate, a positioning platform matched with the positioning shoulder is arranged on the upper end of the oil seal support sleeve, the skeleton oil seal is located in the oil seal support sleeve, and the skeleton oil seal is located below the first spherical roller bearing; the first spherical roller bearing is assembled on the upper end of the driven shaft by a round nut; a first bearing spacer sleeve is arranged between the first spherical roller bearing and the driven gear, the skeleton oil seal is located on the outer side of the upper end of the first bearing spacer sleeve, the first bearing spacer sleeve and the driven shaft are clearance-matched, and an O-shaped sealing ring is arranged between the first bearing spacer sleeve and the spherical roller bearing;

[0009] The second assembly component includes a second flange bearing sleeve fastening plate, a flange bearing sleeve, a second spherical roller bearing and a combined seal; the second flange bearing sleeve fastening plate and the flange bearing sleeve are fixedly installed on the inner and outer sides of the lubricating oil tank bottom plate by multiple fastening bolts, an O-shaped rubber sealing ring is arranged on the upper end of the flange bearing sleeve, the second spherical roller bearing and the combined seal are both located in the flange bearing sleeve, the second spherical roller bearing is assembled on the outside of the driven shaft, a second bearing spacer sleeve is arranged between the second spherical roller bearing and the driven gear, the combined seal is located below the second spherical roller bearing, and the combined seal is clearance-matched with the driven shaft.

[0010] Furthermore, the driven gear is located between the first assembly component and the second assembly component, and the driven gear is fixedly connected to the driven shaft; and the rake is installed on the lower end of the driven shaft through an assembly plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The driven shaft assembly disclosed by the utility model has an upper end and a middle portion of the driven shaft assembled and connected to a lubricating oil tank through a first assembly component and a second assembly component respectively, thereby improving the stability of the driven shaft during the transmission process; in addition, multiple sealing mechanisms are added in the first assembly component and the second assembly component to ensure the sealing performance after assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the utility model;

[0014] Figure 2 for Figure 1 A top view of

[0015] Figure 3 for Figure 2 Cross-sectional view along the AA direction.

[0016] Description of main component symbols:

[0017] 10-driven shaft, 11-driven bearing sleeve, 111-fastening bolt, 112-center screw, 113-hexagon socket head screw, 114-0-shaped rubber sealing ring, 12-first flange bearing sleeve fastening plate, 13-oil seal sleeve, 14-skeleton oil seal, 15-first spherical roller bearing, 151-round nut, 152-first bearing spacer sleeve, 153-0-shaped sealing ring, 16-second flange bearing sleeve fastening plate, 17-flange bearing sleeve, 171-0-shaped rubber sealing ring, 18-second spherical roller bearing, 181-second bearing spacer sleeve, 19-combined seal, 20-driven gear, 30-rake, 41-lubricating oil tank top plate, 42-lubricating oil tank bottom plate. Implementation

[0018] 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.

[0019] See also Figures 1 to 3 The utility model provides a driven shaft assembly, which includes a driven shaft 10, a driven gear 20 and a rake 30.

[0020] The upper end and the middle portion of the driven shaft 10 are provided with a first assembly component and a second assembly component, respectively.

[0021] The first assembly component includes a driven bearing sleeve 11, a first flange bearing sleeve fastening plate 12, an oil seal support sleeve 13, a skeleton oil seal 14 and a first spherical roller bearing 15; the driven bearing sleeve 11 and the first flange bearing sleeve fastening plate 12 are fixedly installed on the inner and outer sides of the lubricating oil tank top plate 41 through multiple fastening bolts 111, a center screw 112 and multiple hexagon socket head screws 113 evenly distributed around the center screw are arranged on the driven bearing sleeve 11, and an O-shaped rubber sealing ring 114 is arranged on the lower end surface of the driven bearing sleeve 11; a positioning shoulder is arranged on the inner side of the first flange bearing sleeve fastening plate 12, and an oil seal support sleeve 13 is arranged on the inner side of the first flange bearing sleeve fastening plate 12. A positioning platform matched with the positioning shoulder is arranged at the upper end of 13, the skeleton oil seal 14 is located in the oil seal support sleeve 13, the skeleton oil seal 14 is located below the first spherical roller bearing 15, and the skeleton oil seal 14 is located outside the upper end of the first bearing spacer sleeve 152; the first spherical roller bearing 15 is assembled on the upper end of the driven shaft 10 through a round nut 151; a first bearing spacer sleeve 152 is arranged between the first spherical roller bearing 15 and the driven gear 20, and a clearance fit is formed between the first bearing spacer sleeve 152 and the driven shaft 10, and an O-shaped sealing ring 153 is arranged between the first bearing spacer sleeve 152 and the spherical roller bearing 15.

[0022] The second assembly component includes a second flange bearing sleeve fastening plate 16, a flange bearing sleeve 17, a second spherical roller bearing 18 and a combined seal 19; the second flange bearing sleeve fastening plate 16 and the flange bearing sleeve 17 are fixedly installed on the inner and outer sides of the lubricating oil tank bottom plate 42 through multiple fastening bolts 111, an O-shaped rubber sealing ring 171 is arranged at the upper end of the flange bearing sleeve 17, the second spherical roller bearing 18 and the combined seal 19 are both located in the flange bearing sleeve 17, the second spherical roller bearing 18 is assembled on the outside of the driven shaft 10, a second bearing spacer sleeve 181 is arranged between the second spherical roller bearing 18 and the driven gear 20, the combined seal 19 is located below the second spherical roller bearing 18, and the combined seal 19 is clearance-matched with the driven shaft 10.

[0023] The driven gear 20 is located between the first assembly component and the second assembly component, and the driven gear 20 is fixedly connected to the driven shaft 10; the rake 30 is installed at the lower end of the driven shaft 10 through an assembly plate.

[0024] The installation process of the driven shaft assembly disclosed in this embodiment is: the driven bearing sleeve 11 and the first flange bearing sleeve fastening plate 12 of the first assembly component are fixedly installed on the inner and outer sides of the lubricating oil tank top plate 41 by multiple fastening bolts 111, and the second flange bearing sleeve fastening plate 16 and the flange bearing sleeve 17 of the second assembly component are fixedly installed on the inner and outer sides of the lubricating oil tank bottom plate 42 by multiple fastening bolts 111, so as to realize the assembly of the entire driven shaft assembly, and the driven gear 20 is immersed below the oil level in the lubricating oil tank.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A driven shaft assembly, comprising a driven shaft, a driven gear and a rake, characterized in that: The upper end and the middle part of the driven shaft are respectively provided with a first assembly component and a second assembly component; The first assembly component comprises a driven bearing sleeve, a first flange bearing sleeve fastening plate, an oil seal support sleeve, a skeleton oil seal and a first spherical roller bearing; the driven bearing sleeve and the first flange bearing sleeve fastening plate are fixedly mounted on the inner and outer sides of the top plate of the lubricating oil tank by a plurality of fastening bolts, a center screw and a plurality of hexagon socket head screws evenly distributed around the center screw are arranged on the driven bearing sleeve, and an O-shaped rubber sealing ring is arranged on the lower end surface of the driven bearing sleeve; a positioning shoulder is arranged on the inner side of the first flange bearing sleeve fastening plate, a positioning platform matched with the positioning shoulder is arranged on the upper end of the oil seal support sleeve, the skeleton oil seal is located in the oil seal support sleeve, and the skeleton oil seal is located below the first spherical roller bearing; the first spherical roller bearing is assembled on the upper end of the driven shaft by a round nut; a first bearing spacer sleeve is arranged between the first spherical roller bearing and the driven gear, the skeleton oil seal is located on the outer side of the upper end of the first bearing spacer sleeve, the first bearing spacer sleeve and the driven shaft are clearance-matched, and an O-shaped sealing ring is arranged between the first bearing spacer sleeve and the spherical roller bearing; The second assembly component includes a second flange bearing sleeve fastening plate, a flange bearing sleeve, a second spherical roller bearing and a combined seal; the second flange bearing sleeve fastening plate and the flange bearing sleeve are fixedly installed on the inner and outer sides of the lubricating oil tank bottom plate by multiple fastening bolts, an O-shaped rubber sealing ring is arranged on the upper end of the flange bearing sleeve, the second spherical roller bearing and the combined seal are both located in the flange bearing sleeve, the second spherical roller bearing is assembled on the outside of the driven shaft, a second bearing spacer sleeve is arranged between the second spherical roller bearing and the driven gear, the combined seal is located below the second spherical roller bearing, and the combined seal is clearance-matched with the driven shaft.

2. The driven shaft assembly according to claim 1, characterized in that: The driven gear is located between the first assembly component and the second assembly component, and the driven gear is fixedly connected to the driven shaft; the rake is installed on the lower end of the driven shaft through an assembly plate.

Images