Filter element structure of loader gearbox

Abstract

The utility model discloses a loader gearbox filter element structure which comprises a filter element, a flange, a box body and an oil bottom plate. The filter element is arranged in the box body, the mounting surface at the front end of the filter element is positioned between the flange and the box body, the flange, the filter element and the box body are locked through bolts, and the oil bottom plate is mounted at the bottom of the box body through bolts; the filter element comprises a filter element front section and a filter element rear section, an embedded boss internal thread is arranged at the rear end of the filter element front section, an embedded boss external thread is arranged at the front end of the filter element rear section, and the embedded boss internal thread and the embedded boss external thread are in threaded close fit. The gearbox filter element replacement device is simple and compact in structure and low in manufacturing and maintenance cost, gearbox filter element replacement operation is convenient and efficient, and the problem that a conventional gearbox filter element cannot be taken out from the side face due to compact clearance fit between a cab and the side face of a gearbox of an existing integral type loader is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of a loader gearbox assembly, in particular to a filter element structure of a loader gearbox. Background Art

[0002] After the loader is assembled and rolled off the assembly line, it is necessary to do road running, production and assembly operations, bumpy road tests, etc. in the factory. At this time, the gears inside the gearbox are in the early running-in stage, and the gear meshing parts are worn a lot, resulting in iron filings and foreign matter entering the gearbox and the internal oil channel, which pollutes the transmission oil. The gearbox filter is mainly used for filtering oil in the hydraulic system to remove particulate debris and foreign matter such as iron filings in the hydraulic system to ensure the cleanliness of the transmission oil, so that the hydraulic system can operate normally; when the speed pump absorbs the transmission oil from the oil pan, the oil must first pass through the gearbox filter to filter out the sludge, iron filings and other foreign matter in the early gear running-in. After the loader has completed the factory test, the transmission oil and filter element need to be replaced; in addition, because the filter element is a wearing part in the loader gearbox, when the transmission oil is replaced, the filter element also needs to be replaced together, so the disassembly and replacement of the filter element is an essential step. However, many existing loaders are of integral type, and the structure of the cab is closely matched with the side clearance of the gearbox, so the gearbox filter element cannot be removed from the side. To overcome this defect, a gearbox filter element structure that is convenient for removal from the side of the gearbox needs to be developed. Summary of the invention

[0003] The purpose of the utility model is to solve the above defects and provide a loader gearbox filter element structure with simple and compact structure, low manufacturing and maintenance costs, and convenient and efficient gearbox filter element replacement operation, so as to solve the problem that the conventional filter element of the gearbox cannot be taken out from the side due to the tight fit between the cab and the side of the gearbox of the existing integral type loader.

[0004] To achieve the above purpose, the utility model loader gearbox filter structure includes a filter element, a flange 2, a housing 3 and an oil pan 6; the filter element is arranged in the housing 3, and its front end mounting surface is located between the flange 2 and the housing 3, the flange 2, the filter element and the housing 3 are locked by bolts 1, and the oil pan 6 is installed at the bottom of the housing 3 by bolts; the filter element includes a filter element front section 4 and a filter element rear section 5, the rear end of the filter element front section 4 is provided with an internal thread of a chimeric boss, and the front end of the filter element rear section 5 is provided with an external thread of a chimeric boss, and the two threads are tightly matched.

[0005] When the filter element of the integrated loader with limited space cannot be taken out from the side, the filter element structure can be used to facilitate removal.

[0006] The utility model loader gearbox filter structure adopts a two-stage filter element, which has the following technical characteristics and beneficial effects:

[0007] 1. Add an internal thread of the chiseled boss at the rear end of the filter element front section 4, and add an external thread of the chiseled boss at the front section of the filter element rear end 5. The two threads are tightly matched, which greatly reduces the operating space required for replacing the filter element, and solves the problem that the conventional filter element of the gearbox cannot be removed from the side due to the tight clearance between the cab and the side of the gearbox in the existing integral type loader;

[0008] 2. The filter element has a simple and compact structure, low manufacturing and maintenance costs, and the transmission filter element replacement operation is convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The utility model is a schematic diagram of the main cross-sectional structure of a loader gearbox filter structure.

[0010] Reference numerals: bolt 1, flange 2, housing 3, filter element front section 4, filter element rear section 5, oil pan 6. DETAILED DESCRIPTION

[0011] The specific implementation of the loader gearbox filter structure of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0012] Figure 1 As shown, the utility model loader gearbox filter element structure includes a filter element, a flange 2, a housing 3 and an oil pan 6; the filter element is arranged in the housing 3, and its front end mounting surface is located between the flange 2 and the housing 3, the flange 2, the filter element and the housing 3 are locked by bolts 1, and the oil pan 6 is installed at the bottom of the housing 3 by bolts; the filter element includes a filter element front section 4 and a filter element rear section 5, the rear end of the filter element front section 4 is provided with an internal thread of a chimeric boss, and the front end of the filter element rear section 5 is provided with an external thread of a chimeric boss, and the two threads are tightly matched.

[0013] The replacement operation steps of the loader gearbox filter element structure of the utility model are: firstly, the integrated loader gearbox oil bottom plate 6 is removed, and then the filter element rear section 5 is unscrewed using a special tool, and then the new filter element rear section 5 is replaced to complete the operation of replacing the filter element.

Claims

1. A loader gearbox filter element structure, comprising a filter element, a flange (2), a housing (3) and an oil pan (6); the filter element is arranged in the housing (3), and its front end mounting surface is located between the flange (2) and the housing (3); the flange (2), the filter element and the housing (3) are locked by bolts (1); the oil pan (6) is mounted on the bottom of the housing (3) by bolts; the characteristics are: The filter element comprises a filter element front section (4) and a filter element rear section (5), the rear end of the filter element front section (4) is provided with an internal thread of an embedded boss, and the front end of the filter element rear section (5) is provided with an external thread of an embedded boss, and the threads of the two are tightly matched.

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