Oil absorption filtering device of gearbox of backhoe loader

Abstract

A filter is connected with the left end of a filter adapter in a welded mode, the right end of the filter adapter is fixed to the left end of a transparent hose through a hose clamp, and the right end of the transparent hose is fixed to the left end of an oil suction pipe connector through a hose clamp; the outer circle of the oil suction pipe connector is connected with a fixing plate with four bolt holes in a welded mode, and a rubber O-shaped ring is installed on a sealing groove of an inner cavity in the right end of the oil suction pipe connector. During working, after the right end of the oil suction pipe joint is inserted into a gearbox body from an oil suction hole of the gearbox body and is aligned with and sleeved with the outer circle of the oil suction pipe welding part, the fixing plate is locked on the gearbox body through the four bolts and the four gaskets, and the joint of the oil suction pipe joint and the oil suction pipe welding part is sealed through the rubber O-shaped ring. According to the utility model, the transmission oil in the oil tank can be prevented from being polluted due to the contact between the transmission oil in the oil tank and the outer surfaces of the gearbox body and the box cover casting while the oil absorption efficiency in the gearbox bench test is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary manufacturing devices for gearboxes of excavators and loaders, in particular to an oil suction and filtering tool used for the gearbox of an excavator and loader during bench testing. Background Art

[0002] As an important component of the transmission system of the backhoe loader, the gearbox of the backhoe loader works by controlling the transmission oil through the solenoid valve to make each clutch hub gear work. Therefore, the cleanliness of the transmission oil must be ensured, and the backhoe loader gearbox must be subjected to a bench test of oil absorption efficiency before the product leaves the factory. In the bench test of the backhoe loader gearbox in the prior art, the oil suction port of the loader gearbox is generally immersed in the oil tank to absorb the oil. The defects are: on the one hand, the iron filings and foreign matter on the outer surface of the gearbox housing and the case cover casting are easily integrated into the transmission oil in the oil tank, affecting the cleanliness of the transmission oil; on the other hand, this operation is difficult to improve the oil absorption efficiency of the gearbox oil suction pipe welding, affecting the smooth progress of the gearbox bench test. Summary of the invention

[0003] The purpose of the utility model is to overcome the above defects and provide an oil suction filter device for an excavator loader gearbox which can improve the oil suction efficiency in a gearbox bench test and prevent the transmission oil in the oil tank from contacting the outer surfaces of the gearbox case and the case cover casting, thereby preventing the transmission oil entering the gearbox case from being contaminated.

[0004] In order to achieve the above purpose, the utility model provides an oil suction filter device for a gearbox of an excavator loader, comprising a filter 1, a filter adapter 2, a throat clamp 3, a transparent hose 4, an oil suction pipe joint 5, a fixing plate 6, a bolt 7, a gasket 8 and a rubber O-ring 9; the filter 1 is welded to the left end of the filter adapter 2, the right end of the filter adapter 2 is fixed to the left end of the transparent hose 4 through the throat clamp 3, and the right end of the transparent hose 4 is fixed to the left end of the oil suction pipe joint 5 through the throat clamp 3; the oil suction The outer circle of the pipe joint 5 is welded to the fixing plate 6 with four bolt holes, and the rubber O-ring 9 is installed on the sealing groove of the inner cavity of the right end of the oil suction pipe joint 5; when working, the right end of the oil suction pipe joint 5 is inserted into the case from the oil suction hole of the gearbox case 10, aligned and inserted into the outer circle of the oil suction pipe weld 11, and then four bolts 7 and four washers 8 are used to lock the fixing plate 6 on the gearbox case 10, and the connection between the oil suction pipe joint 5 and the oil suction pipe weld 11 is sealed by the rubber O-ring 9.

[0005] The utility model is an oil suction and filtering device for a gearbox of an excavator loader, which has the following technical characteristics and

[0006] Beneficial effects:

[0007] 1. By providing a filter 1 to preliminarily filter the transmission oil and using a transparent hose 4, the transmission cover and the outer surface of the casing casting can be prevented from directly contacting the transmission oil in the oil tank during the test run of the transmission, which greatly improves the cleanliness of the transmission oil and solves the problem of iron filings and foreign matter adhering to the outer surface of the transmission cover and the casing casting entering the transmission casing during the test run of the transmission in the prior art and affecting the transmission of the transmission;

[0008] 2. Each component seals the oil transmission, greatly improving the oil absorption efficiency of the gearbox during the test run, solving the problem of the existing gearbox affecting transmission due to poor oil absorption efficiency during bench testing;

[0009] 3. The structure is simple and compact, easy and efficient to assemble, and easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The utility model is a main cross-sectional schematic diagram of the installation structure of an oil suction and filtering device of a gearbox of an excavator loader when the device is working.

[0011] Figure numerals: filter 1, filter adapter 2, throat clamp 3, transparent hose 4, oil suction pipe joint 5, fixing plate 6, bolt 7, gasket 8, rubber O-ring 9, gearbox housing 10, oil suction pipe weld 11. DETAILED DESCRIPTION

[0012] The specific implementation of the oil suction and filtering device of the gearbox of a backhoe loader of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0013] Figure 1 As shown, the utility model is an oil suction filter device for a gearbox of an excavator loader, comprising a filter 1, a filter adapter 2, a throat clamp 3, a transparent hose 4, an oil suction pipe joint 5, a fixing plate 6, a bolt 7, a gasket 8 and a rubber O-ring 9; the filter 1 is welded to the left end of the filter adapter 2, the right end of the filter adapter 2 is fixed to the left end of the transparent hose 4 through the throat clamp 3, and the right end of the transparent hose 4 is fixed to the left end of the oil suction pipe joint 5 through the throat clamp 3; the oil suction pipe joint The outer circle of the head 5 is welded to the fixing plate 6 with four bolt holes, and the rubber O-ring 9 is installed on the sealing groove of the inner cavity of the right end of the oil suction pipe joint 5; when working, the right end of the oil suction pipe joint 5 is inserted into the case from the oil suction hole of the gearbox case 10, aligned and inserted into the outer circle of the oil suction pipe weld 11, and then four bolts 7 and four washers 8 are used to lock the fixing plate 6 on the gearbox case 10, and the connection between the oil suction pipe joint 5 and the oil suction pipe weld 11 is sealed by the rubber O-ring 9.

[0014] During operation, the rubber O-ring 9 is placed in the sealing groove of the oil suction pipe interface 5 in advance; during the trial run test, the filter 1 is placed in the oil tank to absorb oil, and the right end of the oil suction pipe joint 5 is inserted into the gearbox case 10 from the oil suction hole, and after the right end of the oil suction pipe joint 5 is aligned and inserted into the outer circle of the oil suction pipe weld 11, four bolts 7 and four washers 8 are used to fix the fixing plate 6 on the gearbox case 10 of the excavator loader; the transmission oil flows through the filter 1, the filter adapter 2, the transparent hose 4, and the oil suction pipe joint 5 to the oil suction pipe weld 11 and enters the interior of the gearbox case 10.

Claims

1. An oil suction filter device for a gearbox of a backhoe loader, characterized in that: It comprises a filter (1), a filter adapter (2), a throat clamp (3), a transparent hose (4), an oil suction pipe joint (5), a fixing plate (6), a bolt (7), a gasket (8) and a rubber O-ring (9); the filter (1) is welded to the left end of the filter adapter (2); the right end of the filter adapter (2) is fixed to the left end of the transparent hose (4) through the throat clamp (3); the right end of the transparent hose (4) is fixed to the left end of the oil suction pipe joint (5) through the throat clamp (3); the outer circle of the oil suction pipe joint (5) is connected to the belt A fixing plate (6) with four bolt holes is welded and connected, and the rubber O-ring (9) is installed on the sealing groove of the inner cavity of the right end of the oil suction pipe joint (5); when working, the right end of the oil suction pipe joint (5) is inserted into the gearbox housing (10) through the oil suction hole of the housing, aligned and inserted into the outer circle of the oil suction pipe weld (11), and then the fixing plate (6) is locked on the gearbox housing (10) by four bolts (7) and four washers (8), and the connection between the oil suction pipe joint (5) and the oil suction pipe weld (11) is sealed by the rubber O-ring (9).

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