Shaft sleeve fixing structure of wet-type drive axle of loading machine

Abstract

The utility model discloses a shaft sleeve fixing structure for a wet-type drive axle of a loading machine. The shaft sleeve fixing structure comprises an oil cylinder, a steel ball, an oil cylinder semicircular groove, a shaft sleeve and a gear sleeve, the shaft sleeve is assembled in a shaft sleeve hole of the oil cylinder in an interference fit mode, and the gear sleeve is installed on the shaft sleeve. A blind hole is formed in the position, matched with the oil cylinder, of the shaft sleeve. The oil cylinder is provided with an oil cylinder semicircular groove corresponding to the blind hole of the shaft sleeve; and the steel ball is arranged between the oil cylinder semicircular groove and the blind hole of the shaft sleeve, so that the shaft sleeve is limited in the circumferential direction. The wet-type drive axle shaft sleeve is simple and compact in structure, low in manufacturing and maintenance cost and safe and reliable to use, and solves the problem that an existing wet-type drive axle shaft sleeve is prone to loosening and abrasion when an interference fit fixing structure is adopted in the heavy load working condition or the machining size of parts is unstable.

Description

Technical Field

[0001] The utility model relates to the technical field of wet drive axles for engineering machinery loaders, in particular to a shaft sleeve fixing structure for a wet drive axle for a loader. Background Art

[0002] A common prior art design for securing the sleeve of a loader's wet drive axle utilizes an interference fit. This structure prevents the sleeve from loosening by creating friction between the sleeve and the oil cylinder. However, this sleeve fixing structure has the following drawbacks: Under heavy loads or when parts are processed with unstable dimensions, the friction between the sleeve and the oil cylinder can easily be less than the actual operating force on the sleeve, leading to sleeve loosening and wear, a serious problem. Summary of the Invention

[0003] The purpose of the utility model is to solve the above defects and provide a loader wet drive axle sleeve fixing structure with simple and compact structure, low manufacturing and maintenance costs, and safe and reliable use, so as to solve the problem that the existing wet drive axle sleeve adopts an interference fit fixing structure, which easily causes the sleeve to loosen and wear when encountering heavy load conditions or unstable part processing dimensions.

[0004] To achieve the above objectives, the utility model discloses a loader wet drive axle sleeve fixing structure comprising a cylinder 1, a steel ball 2, a cylinder semicircular groove 3, a sleeve 4 and a gear sleeve 5; the sleeve 4 is assembled in the sleeve hole of the cylinder 1 by interference fit, and the gear sleeve 5 is installed on the sleeve 4; the sleeve 4 is provided with a blind hole at the position where it cooperates with the cylinder 1; the cylinder 1 is provided with a cylinder semicircular groove 3 at the blind hole corresponding to the sleeve 4; the steel ball 2 is installed between the cylinder semicircular groove 3 and the blind hole of the sleeve 4 to limit the sleeve 4 in the circumferential direction.

[0005] The above loader wet drive axle sleeve fixing structure has the following technical features and

[0006] Beneficial effects:

[0007] 1. A blind hole is provided on the outer circumference of the sleeve 4, and a semicircular groove is added to the cylinder 1 at the position corresponding to the blind hole of the sleeve for assembling the steel ball 2. The steel ball 2 limits the circumferential position of the cylinder 1 and the sleeve 4. The friction generated by the interference fit between the sleeve 4 and the cylinder 1, coupled with the circumferential limiting effect of the steel ball on the sleeve 4, can effectively prevent the sleeve from loosening and wearing, greatly improve the bearing capacity of the sleeve, and ultimately improve the reliability of the drive axle;

[0008] 2. The structure is simple and compact, with low production and maintenance costs and reliable quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1The utility model is a schematic diagram of the main cross-sectional structure of the wet drive axle sleeve fixing structure of a loader.

[0010] Reference numerals: oil cylinder 1, steel ball 2, oil cylinder semicircular groove 3, shaft sleeve 4, gear sleeve 5. DETAILED DESCRIPTION

[0011] The specific implementation of the wet drive axle sleeve fixing structure of the loader of the present invention will be further described in detail below with reference to the accompanying drawings.

[0012] Figure 1 As shown, the wet drive axle shaft sleeve fixing structure of the loader of the present invention includes an oil cylinder 1, a steel ball 2, a cylinder semicircular groove 3, a shaft sleeve 4 and a gear sleeve 5; the shaft sleeve 4 is assembled in the shaft sleeve hole of the oil cylinder 1 by interference fit, and the gear sleeve 5 is installed on the shaft sleeve 4; the shaft sleeve 4 is provided with a blind hole at the position where it cooperates with the oil cylinder 1; the oil cylinder 1 is provided with a cylinder semicircular groove 3 at the blind hole corresponding to the shaft sleeve 4; the steel ball 2 is installed between the oil cylinder semicircular groove 3 and the blind hole of the shaft sleeve 4 to realize the limitation of the shaft sleeve 4 in the circumferential direction, the interference fit between the shaft sleeve 4 and the oil cylinder 1 generates friction force, and the circumferential limiting effect of the steel ball 2 can effectively prevent the shaft sleeve from loosening and wearing.

[0013] The utility model discloses a wet-type drive axle shaft sleeve fixing structure for a loader. On the basis of an interference fit between the shaft sleeve 4 and the oil cylinder 1, the shaft sleeve 4 is limited in the circumferential direction by the steel ball 2. The friction force generated by the interference fit between the shaft sleeve 4 and the oil cylinder 1 and the limiting effect of the steel ball 4 in the circumferential direction can effectively prevent the shaft sleeve 4 from loosening and wearing, thereby greatly improving the load-bearing capacity of the shaft sleeve 4 and ultimately improving the reliability of the drive axle.

Claims

1. A loader wet drive axle sleeve fixing structure, comprising a cylinder (1), a sleeve (4) and a gear sleeve (5); the sleeve (4) is assembled in the sleeve hole of the cylinder (1) by interference fit, and the gear sleeve (5) is mounted on the sleeve (4); and the characteristics are: It also includes a steel ball (2); the shaft sleeve (4) is provided with a blind hole at a position where it cooperates with the oil cylinder (1); the oil cylinder (1) is provided with an oil cylinder semicircular groove (3) at the blind hole corresponding to the shaft sleeve (4); the steel ball (2) is installed between the oil cylinder semicircular groove (3) and the blind hole of the shaft sleeve (4) to achieve the limitation of the shaft sleeve (4) in the circumferential direction.

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