Forced lubrication structure of tractor gearbox

Abstract

The utility model discloses a tractor gearbox forced lubrication structure which comprises a box body, a forced lubrication pipe, a connecting shaft, an output shaft and a transmission shaft which are connected in sequence. A first lubricating oil duct, a second lubricating oil duct, a third lubricating oil duct and a fourth lubricating oil duct which are communicated with one another are respectively arranged in the forced lubricating pipe, the connecting shaft, the output shaft and the transmission shaft, and a plurality of first radial oil ducts and second radial oil ducts are respectively arranged on the inner walls of the second oil duct and the third oil duct; the first radial oil duct and the second radial oil duct lead to the exteriors of the output shaft and the transmission shaft, a plurality of gears are coaxially installed on the outer side walls of the output shaft and the transmission shaft, and a first bearing and a second bearing are arranged between part of the gears and the transmission shaft or the outer side wall of the output shaft respectively.

Description

TECHNICAL FIELD

[0001] The utility model relates to a tractor gearbox forced lubrication structure. BACKGROUND

[0002] The gearbox lubrication structure mainly comprises an oil pump, an oil circuit, an oil pool and a filter. The oil pump is responsible for pumping lubricating oil out of the oil pool and delivering it to each part of the gearbox that needs lubrication through the oil circuit. The oil circuit is designed very precisely to ensure that the lubricating oil can evenly cover every key friction point. The filter is used to remove impurities from the lubricating oil to keep the oil clean and prevent the impurities from causing wear and tear on the internal parts of the gearbox.

[0003] The existing gearbox only uses the oil inside the gearbox to lubricate the needle bearing through the lubricating oil channel, which can meet the lubrication requirements to some extent. However, the forced lubrication is not enough, the cooling effect is not good, the reliability is not high, and the lubrication effect is not ideal. If the needle bearing is not lubricated enough at high speed, it may cause wear and tear and burn out, affecting the stability of the gear work. To make up for the lack of lubrication, forced lubrication is needed. SUMMARY

[0004] The utility model aims at solving the above technical deficiencies, and provides a tractor gearbox forced lubrication structure.

[0005] A tractor gearbox forced lubrication structure, comprising a box body, a forced lubrication pipe, a connecting shaft, an output shaft and a transmission shaft, the forced lubrication pipe, the connecting shaft, the output shaft and the transmission shaft are connected in sequence, the forced lubrication pipe, the connecting shaft, the output shaft and the transmission shaft are respectively provided with a first lubricating oil channel, a second lubricating oil channel, a third lubricating oil channel and a fourth lubricating oil channel, the inner walls of the second oil channel and the third oil channel are respectively provided with a plurality of first radial oil channels and second radial oil channels, the first radial oil channels and the second radial oil channels lead to the outside of the output shaft and the transmission shaft, a plurality of gears are coaxially installed on the outer walls of the output shaft and the transmission shaft, and first bearings and second bearings are respectively arranged between part of the gears and the outer walls of the transmission shaft and the output shaft.

[0006] Further, first bushings and second bushings are respectively arranged between the first bearings and the transmission shaft, and between the second bearings and the output shaft.

[0007] Further, the inner walls of the first bushings and the second bushings are respectively provided with first annular grooves and second annular grooves, and the bottoms of the first annular grooves and the second annular grooves are provided with a fifth lubricating oil channel and a sixth lubricating oil channel.

[0008] Further, one end of the forced lubrication pipe is arranged in the box body, and the other end passes through the outer wall of the connecting shaft, and the forced lubrication pipe is perpendicular to the connecting shaft.

[0009] Further, the joint between the forced lubrication pipe and the box is provided with a sealing ring.

[0010] Further, one end of the connecting shaft is coaxially connected with one end of the output shaft, and the connecting shaft and the output shaft are provided with a third bearing.

[0011] Beneficial effects: compared with the prior art, the utility model has the following advantages:

[0012] The box is externally provided with forced lubricating oil with certain pressure, which only enters the inside of the gearbox through the forced lubrication pipe, and the structure is simple and reliable. The forced lubrication pipe, the connecting shaft, the output shaft and the transmission shaft are internally provided with lubricating oil channels, forming lubricating oil channels leading to the needle bearing of the gearbox. The output shaft and the transmission shaft are provided with radial lubricating oil channels according to needs, which can lubricate multiple parts inside the box that need to be lubricated, lubricate the needle bearing through the lubricating oil channels inside the shaft, and have excellent forced lubrication effect, so that the phenomenon of burning out due to lack of oil of the parts can be avoided, and the service life of the gearbox is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is an assembly schematic view of the forced lubrication pipe and the box and the connecting shaft;

[0014] Fig. 2 is an internal structure schematic view of the forced lubrication structure of the tractor gearbox. DETAILED DESCRIPTION

[0015] In order to deepen the understanding of the utility model, the utility model will be further described in combination with examples and drawings below, and the examples are only used to explain the utility model and do not constitute a limitation on the protection scope of the utility model.

[0016] As shown in Figs. 1-2 the output shaft 1, the first bearing 2, the first bushing 3, the box 4, the output shaft 5, the second bearing 6, the second bushing 7, the third bearing 8, the connecting shaft 9, the sealing ring 10, the forced lubrication pipe 11, the first lubricating oil channel 1101, the second lubricating oil channel 901, the third lubricating oil channel 501, the first radial lubricating oil channel 502, the sixth lubricating oil channel 701, the second annular groove 702, the fourth lubricating oil channel 101, the second radial lubricating oil channel 102, the fifth lubricating oil channel 301, and the first annular groove 302.

[0017] A forced lubrication structure of a tractor gearbox, comprising a box, a forced lubrication pipe, a connecting shaft, an output shaft and a transmission shaft.

[0018] The forced lubrication pipe, the connecting shaft, the output shaft and the transmission shaft are connected in sequence, the connecting shaft, the output shaft and the transmission shaft are respectively provided with the first lubricating oil channel, the second lubricating oil channel and the third lubricating oil channel which are communicated, the inner wall of the second lubricating oil channel and the third lubricating oil channel is respectively provided with a plurality of first radial oil channels and second radial oil channels, the first radial oil channels and the second radial oil channels are communicated to the outside of the output shaft and the transmission shaft, the outer side wall of the output shaft and the transmission shaft is coaxially provided with a plurality of gears, and the gears are respectively provided with the first bearing and the second bearing between the gears and the outer side wall of the transmission shaft or the output shaft.

[0019] One end of the forced lubrication pipe 11 is fixed on one side of the box body 4 through threads, the other end is penetrated into the inner hole of the connecting shaft 9, and the two are matched with a small gap and form a 90-degree angle on the horizontal plane. The connecting end of the forced lubrication pipe 11 and the box body 4 is also provided with a sealing ring 10.

[0020] The outer circle of one end of the connecting shaft 9 is coaxially installed in the inner hole of one end of the output shaft 5, and the outer circle of the connecting shaft 9 and the inner hole of the output shaft 5 have a certain matching length and are matched with a small gap. The third bearing 8 is arranged between the connecting shaft 9 and the output shaft 5.

[0021] The outer circle of the connecting shaft 9 and the inner hole of the output shaft 5 have a certain matching length and are matched with a small gap, which can effectively prevent hydraulic oil leakage. The outer circle of the forced lubrication pipe 11 and the inner hole of the connecting shaft 9 are matched with a small gap, which can effectively prevent hydraulic oil leakage.

[0022] The first lubricating oil channel 1101 is arranged in the forced lubrication pipe 11. The second lubricating oil channel 901 is arranged in the connecting shaft 9. The third lubricating oil channel 501 and a plurality of first radial lubricating oil channels 502 are arranged in the output shaft 5. The lubricating oil channel 101 and a plurality of second radial lubricating oil channels 102 are arranged in the output shaft 1.

[0023] The first bearing and the second bearing are respectively provided with the first bushing and the second bushing between the transmission shaft and the output shaft.

[0024] The sixth lubricating oil channel 701 and the second annular groove 702 are arranged in the second bushing 7.

[0025] The fifth lubricating oil channel 301 and the first annular groove 302 are arranged in the first bushing 3.

[0026] The sealing ring 10 is arranged at the joint of the forced lubrication pipe and the box body, the sealing ring 10 has a sealing effect and can prevent the gearbox from leaking oil.

[0027] The lubricating oil passages of the components are communicated, forming a lubricating oil passage leading to the needle bearing of the gearbox, capable of lubricating multiple components inside the gearbox that need to be lubricated, and the needle bearing is lubricated through the lubricating oil passage in the shaft, so that the forced lubrication effect is excellent, the phenomenon of burning out due to lack of oil of the components can be avoided, and the service life of the gearbox is improved.

[0028] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A forced lubrication structure for a tractor gearbox, characterized in that, The device includes a housing, a forced lubrication pipe, a connecting shaft, an output shaft, and a transmission shaft, which are connected in sequence. The forced lubrication pipe, connecting shaft, output shaft, and transmission shaft are respectively provided with a first lubrication oil passage, a second lubrication oil passage, a third lubrication oil passage, and a fourth lubrication oil passage. The inner walls of the second and third oil passages are respectively provided with multiple first radial oil passages and second radial oil passages. The first and second radial oil passages lead to the outside of the output shaft and the transmission shaft. Multiple gears are coaxially mounted on the outer walls of the output shaft and the transmission shaft, and some of the gears are respectively provided with a first bearing and a second bearing between them and the outer walls of the transmission shaft or the output shaft.

2. The forced lubrication structure for a tractor gearbox according to claim 1, characterized in that, The first bearing and the second bearing are respectively provided with a first bushing and a second bushing between them and the drive shaft and the output shaft.

3. The forced lubrication structure for a tractor gearbox according to claim 2, characterized in that, The inner walls of the first bushing and the second bushing are respectively provided with a first annular groove and a second annular groove, and the bottom surfaces of the first annular groove and the second annular groove are provided with a fifth lubricating oil passage and a sixth lubricating oil passage that pass through each other.

4. The forced lubrication structure for a tractor gearbox according to claim 1, characterized in that, One end of the forced lubrication tube is inserted into the housing, and the other end passes through the outer wall of the connecting shaft. The forced lubrication tube is perpendicular to the connecting shaft.

5. The forced lubrication structure for a tractor gearbox according to claim 1, characterized in that, A sealing ring is provided at the junction of the forced lubrication pipe and the housing.

6. The forced lubrication structure for a tractor gearbox according to claim 1, characterized in that, One end of the connecting shaft is rotatably connected to one end of the output shaft, and a third bearing is provided between the connecting shaft and the output shaft.

Images