Front axle reducer housing for excavator

Abstract

The utility model relates to the field of speed reducer shells, in particular to a front axle speed reducer shell for an excavator. According to the front axle reducer shell for the excavator, the sealing reliability of a reducer shell can be improved, internal lubricating grease is prevented from leaking, and the sealing effect is improved. A front axle reducer shell for an excavator comprises a reducer shell body. The main cone bearing seat is fixedly connected with the reducer shell main body through a plurality of connecting bolts; a sealing washer is arranged on the end face of the joint of the reducer shell body and the main cone bearing seat. The speed reducer shell achieves the effects that the sealing reliability of the speed reducer shell is improved, internal lubricating grease is prevented from leaking, and the sealing performance is improved.

Description

Technical Field

[0001] The utility model relates to the field of reducer housings, in particular to a front axle reducer housing for an excavator. Background Art

[0002] The reducer housing usually refers to the reducer housing in the drive axle. Its main function is to accommodate and protect the gears, bearings and other transmission elements inside the reducer. At the same time, it also serves as the installation basis for these transmission elements. The operating environment of the excavator is complex and changeable, and it often needs to work under harsh conditions. Therefore, the rear axle reducer housing is usually made of high-strength materials, such as cast iron or alloy steel, to ensure that it has sufficient strength and durability. However, the sealing effect of the existing reducer housing is easily weakened under high-intensity work, and the lubricating grease in the reducer housing is prone to leakage, thereby affecting the operation of the drive axle. Therefore, it is urgent to develop a front axle reducer housing for excavators that can increase the sealing reliability of the reducer housing, prevent internal lubricating grease leakage, and improve the sealing effect. Utility Model Content

[0003] In order to overcome the shortcomings of the existing reducer housing that the sealing effect is easily weakened under high-intensity work, and the lubricating grease in the reducer housing is easily leaked, thereby affecting the operation of the drive axle, the technical problem to be solved by the utility model is to provide a front axle reducer housing for an excavator that can increase the sealing reliability of the reducer housing, prevent the leakage of internal lubricating grease, and improve the sealing effect.

[0004] The utility model is achieved by the following specific technical means:

[0005] A front axle shell reducer for an excavator comprises a shell reducer body; a main cone bearing seat fixedly connected to the shell reducer body by a plurality of connecting bolts; a sealing gasket is arranged on the end surface of the connection between the shell reducer body and the main cone bearing seat;

[0006] A sealing sleeve is arranged on the inner side of the connection between the shell reduction body and the main cone bearing seat, which cooperates with the shell reduction body and the main cone bearing seat and is used to increase the sealing performance; a plurality of mounting holes for installing connecting bolts are arranged on the main cone bearing seat, and a plurality of mounting holes are provided with convex rings protruding from one side of the shell reduction body; a plurality of threaded holes for engaging with the connecting bolts are arranged on the shell reduction body, and a plurality of threaded holes are arranged in grooves cooperating with the convex rings near one end of the main cone bearing; a sealing ring is arranged on the outer diameter surface of the convex ring cooperating with the groove; a plurality of connecting bolts penetrate the mounting holes arranged on the main cone bearing seat and engage with the threaded holes arranged on the shell reduction body.

[0007] Furthermore, the upper and lower ends of the outer diameter surface of the sealing sleeve are respectively provided with inclined sealing surfaces that cooperate with the main cone bearing seat and the reduction shell body; the main cone bearing seat and the reduction shell body are conically sealed by the arranged inclined sealing surfaces, thereby increasing the sealing reliability of the connection between the main cone bearing seat and the reduction shell body.

[0008] Furthermore, an elastic sealing rubber layer is arranged on the outer diameter surface of the sealing sleeve; the elastic sealing rubber layer increases the contact tightness between the sealing sleeve and the main cone bearing seat and the reduction shell body, thereby improving the sealing effect.

[0009] Furthermore, the convex ring and the groove are clearance-fitted, so as to facilitate the fitting installation of the convex ring and the groove.

[0010] Furthermore, the sealing ring is an O-ring.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model achieves the effects of increasing the sealing reliability of the reducer housing, preventing the leakage of internal lubricating grease, and improving the sealing performance.

[0013] The connection between the reducer body and the main cone bearing seat is sealed multiple times by means of sealing sleeves, convex rings and grooves to improve the sealing effect and prevent leakage of internal lubricating grease. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0015] Figure 2 It is a cross-sectional structural schematic diagram of the utility model.

[0016] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model.

[0017] The markings in the accompanying drawings are: 1-reducing shell body, 2-main cone bearing seat, 3-connecting bolts, 4-sealing gasket, 5-sealing sleeve, 6-convex ring, 7-groove, 8-sealing ring. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings: Example

[0019] A front axle shell reduction for an excavator, such as Figure 1-3 As shown, it includes a shell reduction body 1; a main cone bearing seat 2 fixedly connected to the shell reduction body 1 through a plurality of connecting bolts 3; a sealing gasket 4 is provided on the end surface of the connection between the shell reduction body 1 and the main cone bearing seat 2;

[0020] A sealing sleeve 5 is provided on the inner side of the connection between the reduction shell body 1 and the main cone bearing seat 2, which cooperates with the reduction shell body 1 and the main cone bearing seat 2 and is used to increase the sealing performance; a plurality of mounting holes for installing connecting bolts 3 are provided on the main cone bearing seat 2, and a plurality of mounting holes are provided with convex rings 6 protruding from one side of the reduction shell body 1; a plurality of threaded holes for engaging with the connecting bolts 3 are provided on the reduction shell body 1, and a plurality of threaded holes are provided in grooves 7 cooperating with the convex ring 6 near one end of the main cone bearing; a sealing ring 8 is provided on the outer diameter surface of the convex ring 6 cooperating with the groove 7; a plurality of connecting bolts 3 pass through the mounting holes provided on the main cone bearing seat 2 and engage with the threaded holes provided on the reduction shell body 1.

[0021] Working principle:

[0022] The utility model reducer housing is provided with a sealing sleeve 5 on the inner side of the connection between the reduction shell body 1 and the main cone bearing seat 2; the upper and lower ends of the outer diameter surface of the sealing sleeve 5 are respectively provided with inclined sealing surfaces that match the main cone bearing seat 2 and the reduction shell body 1; the main cone bearing seat 2 and the reduction shell body 1 are sealed with the inclined sealing surface to increase the sealing reliability of the connection between the main cone bearing seat 2 and the reduction shell body 1 to prevent internal lubricating grease leakage; at the same time, the main cone bearing seat 2 is provided with a plurality of mounting holes for installing connecting bolts 3, and the mounting holes are protrudingly provided with a convex ring 6 on one side close to the reduction shell body 1; the reduction shell body 1 is provided with a plurality of threaded holes for engaging with the connecting bolts 3, and a groove 7 that matches the convex ring 6 is provided at one end of the threaded hole close to the main cone bearing; the convex ring 6 plays a positioning role through the cooperation with the groove 7, which is convenient for the installation of the reduction shell body 1 and the main cone bearing seat 2, and at the same time, a sealing ring 8 is provided on the outer diameter surface where the convex ring 6 matches the groove 7; the sealing effect is further improved to prevent internal lubricating grease from leaking from the installation of the connecting bolt 3.

[0023] The connection between the shell body 1 and the main cone bearing seat 2 is sealed multiple times by means of the sealing sleeve 5, the convex ring 6 and the groove 7, so as to improve the sealing effect and prevent the leakage of the internal lubricating grease.

[0024] Although the present disclosure has been described in detail with reference to the exemplary embodiments, the present disclosure is not limited thereto, and it will be apparent to those skilled in the art that various modifications and changes may be made thereto without departing from the scope of the present disclosure.

Claims

1. A front axle reducer for an excavator, comprising a reducer body (1); a main cone bearing seat (2) fixedly connected to the reducer body (1) via a plurality of connecting bolts (3); a sealing gasket (4) is provided on the end surface of the connection between the reducer body (1) and the main cone bearing seat (2); It is characterized in that A sealing sleeve (5) is provided on the inner side of the connection between the shell reduction body (1) and the main cone bearing seat (2) and is matched with the shell reduction body (1) and the main cone bearing seat (2) to increase the sealing performance; a plurality of mounting holes for mounting connecting bolts (3) are provided on the main cone bearing seat (2); a plurality of mounting holes are provided with convex rings (6) protruding from one side of the shell reduction body (1); a plurality of threaded holes for engaging with the connecting bolts (3) are provided on the shell reduction body (1); a plurality of threaded holes are provided in a groove (7) matched with the convex ring (6) near one end of the main cone bearing; a sealing ring (8) is provided on the outer diameter surface of the convex ring (6) matched with the groove (7); a plurality of connecting bolts (3) penetrate the mounting holes provided on the main cone bearing seat (2) and engage with the threaded holes provided on the shell reduction body (1).

2. The front axle shell reduction for an excavator according to claim 1, characterized in that: The upper and lower ends of the outer diameter surface of the sealing sleeve (5) are respectively provided with inclined sealing surfaces that match the main cone bearing seat (2) and the reduction shell body (1).

3. The front axle shell reduction for an excavator according to claim 1, characterized in that: An elastic sealing rubber layer is provided on the outer diameter surface of the sealing sleeve (5).

4. The front axle shell reduction for an excavator according to claim 1, characterized in that: The convex ring (6) and the groove (7) are clearance-fitted.

5. The front axle shell reduction for an excavator according to claim 1, characterized in that: The sealing ring (8) is an O-shaped sealing ring.

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