Loader-digger gearbox input shaft bearing lubrication structure

Abstract

The utility model discloses a loader-digger gearbox input shaft bearing lubrication structure, which is characterized in that a plurality of solenoid valves are arranged on an operating valve in a longitudinal row, the solenoid valves comprise a Y2 solenoid valve for controlling an input shaft clutch assembly, the Y2 solenoid valve is fixed on the operating valve through a limiting plate screw and a limiting plate, the operating valve is fixed on a box body through an operating valve screw, and the Y2 solenoid valve is fixed on the box body through an operating valve screw. A paper pad is assembled between the two to ensure sealing; an oil return hole is formed in the valve body of the operating valve provided with the Y2 electromagnetic valve; the box body is provided with an oil duct I, a through process hole and an oil duct III; one end of the oil duct I is butted with the oil return hole, and the other end is communicated with the through process hole; one end of the oil duct III is communicated with the through process hole, and the other end is communicated to the bearing; a plug is assembled at the right end of the through process hole so as to ensure blocking and prevent oil from overflowing. The gearbox input shaft bearing is simple and compact in structure, good in lubricating effect and reliable to use, and solves the problem that the service life of the gearbox input shaft bearing of the loader-digger is short due to insufficient lubrication in the prior art.

Description

TECHNICAL FIELD

[0001] The utility model relates to excavator gearbox structure technical field, concretely relates to excavator gearbox input shaft bearing lubrication structure. BACKGROUND

[0002] The excavator has the characteristics of being flexible and mobile, and is popular with customers in the fields of agriculture, forestry, municipal administration and small area operation due to its multifunctional advantages of being capable of both shovel work and loading work. The demand for such products in the domestic and foreign markets is also steadily increasing. The shaft of the power input shaft and the power output shaft of the excavator gearbox is generally large, and the oil liquid is difficult to effectively lubricate the bearing of the input shaft because the input shaft is far away from the oil pan. Therefore, the input shaft bearing of the existing excavator gearbox generally has the problem of short service life of the bearing due to insufficient lubrication, and even the problem of early burnout. SUMMARY

[0003] The utility model discloses a kind of excavator gearbox input shaft bearing lubrication structures with simple structure, compact, good lubrication effect, reliable use, solve the problem of short service life of excavator gearbox input shaft bearing due to insufficient lubrication in prior art.

[0004] To achieve the above object, the utility model excavator gearbox input shaft bearing lubrication structure includes box 1, control valve 2, control valve screw 3, paper pad 4, plug 5, bearing 6 and input shaft 7;The input shaft 7 is supported on the bearing 6 installed in the box 1;Multiple electromagnetic valves are arranged in longitudinal column on the control valve 2, and the Y2 electromagnetic valve 2.2 for controlling input shaft clutch assembly is included, the Y2 electromagnetic valve 2.2 is fixed on the control valve 2 by limiting plate screw 2.3 and limiting plate 2.4, the control valve 2 is fixed on the box 1 by control valve screw 3, and paper pad 4 is assembled between the two to ensure sealing;Oil return hole 2.1 is provided in the control valve 2 body of installing Y2 electromagnetic valve 2.2;The box 1 is provided with oil channel one 1.1, through process hole 1.2 and oil channel three 1.3;One end of the oil channel one 1.1 is connected with oil return hole 2.1, and the other end is communicated with through process hole 1.2;One end of the oil channel three 1.3 is communicated with through process hole 1.2, and the other end is communicated with bearing 6;The right end of the through process hole 1.2 is assembled with plug 5 to ensure plugging to prevent oil liquid from overflowing.

[0005] The excavator gearbox input shaft bearing lubrication structure has the following technical features and beneficial effects:

[0006] 1. The oil in the oil channel is led to the bearing 6 of the input shaft 7 to force lubricate the bearing 6 by designing the oil channel on the box, so that the bearing 6 is fully lubricated when the input shaft 7 rotates at high speed, effectively solving the problem of insufficient lubrication of the bearing 6 of the input shaft 7 in the prior art, and greatly improving the service life of the bearing;

[0007] 2. Simple structure, good lubrication effect and reliable use. DETAILED DESCRIPTION

[0008] Figure 1 is a main view structural schematic diagram of the excavator loader gearbox input shaft bearing lubricating structure.

[0009] Figure 2 is Figure 1 A-A sectional view structural schematic diagram.

[0010] The drawing label: box 1, oil channel one 1.1, through process hole 1.2, oil channel three 1.3, control valve 2, oil return hole 2.1, Y2 electromagnetic valve 2.2, limit plate screw 2.3, limit plate 2.4, control valve screw 3, paper pad 4, plug 5, bearing 6, input shaft 7. DETAILED DESCRIPTION

[0011] The excavator loader gearbox input shaft bearing lubricating structure of the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0012] Figures 1-2 As shown, the excavator loader gearbox input shaft bearing lubricating structure of the present application comprises a box 1, a control valve 2, a control valve screw 3, a paper pad 4, a plug 5, a bearing 6 and an input shaft 7; the input shaft 7 is supported on the bearing 6 mounted on the box 1; a plurality of electromagnetic valves are arranged in a vertical column on the control valve 2, including a Y2 electromagnetic valve 2.2 for controlling the input shaft clutch assembly, the Y2 electromagnetic valve 2.2 is fixed on the control valve 2 through the limit plate screw 2.3 and the limit plate 2.4, the control valve 2 is fixed on the box 1 through the control valve screw 3, and the paper pad 4 is assembled between the two to ensure sealing; an oil return hole 2.1 is arranged in the valve body of the control valve 2 where the Y2 electromagnetic valve 2.2 is installed; the box 1 is provided with an oil channel one 1.1, a through process hole 1.2 and an oil channel three 1.3; one end of the oil channel one 1.1 is connected with the oil return hole 2.1, and the other end is communicated with the through process hole 1.2; one end of the oil channel three 1.3 is communicated with the through process hole 1.2, and the other end is communicated with the bearing 6; the right end of the through process hole 1.2 is assembled with the plug 5 to ensure plugging to prevent oil overflow.

[0013] When the gearbox works, the overflow backflow oil of Y2 electromagnetic valve 2.2 will flow through oil return hole 2.1, oil channel one 1.1, through process hole 1.2, oil channel three 1.3 to bearing 6 in turn, realizing forced lubrication of bearing 6, so that bearing 6 is fully lubricated when input shaft 7 rotates at high speed.

[0014] The utility model discloses excavator gearbox input shaft bearing lubrication structure, through with Y2 electromagnetic valve overflow backflow oil liquid leads to input shaft bearing, carries out forced lubrication, effectively solved the excavator gearbox input shaft bearing lubrication deficiency problem of prior art, greatly promoted bearing service life, improved product quality.

Claims

1. A kind of excavator gearbox input shaft bearing lubrication structure, it includes box (1), operating valve (2), operating valve screw (3), paper pad (4), bearing (6) and input shaft (7);The input shaft (7) is supported on the bearing (6) installed in box (1);Multiple solenoid valves are arranged in the operating valve (2) in vertical line, including the Y2 solenoid valve (2.2) for controlling input shaft clutch assembly, the Y2 solenoid valve (2.2) is fixed on the operating valve (2) by limiting plate screw (2.3) and limiting plate (2.4), the operating valve (2) is fixed on the box (1) by operating valve screw (3), and paper pad (4) is assembled between the two, to ensure sealing;Its characterized in that: The control valve (2) valve body of installing Y2 electromagnetic valve (2.2) is equipped with oil return hole (2.1); The tank (1) is equipped with oil channel one (1.1), through process hole (1.2) and oil channel three (1.3); One end of the oil channel one (1.1) is butt joint with the oil return hole (2.1), the other end is communicated with the through process hole (1.2); One end of the oil channel three (1.3) is communicated with the through process hole (1.2), the other end is communicated with the bearing (6); The right end of the through process hole (1.2) is equipped with the plug (5), to ensure the plugging prevents the oil liquid overflow.

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