CN218228519U

CN218228519U - Wheel end structure of engineering bridge and engineering bridge

Info

Publication number: CN218228519U
Application number: CN202222218578.7U
Authority: CN
Inventors: 吴志强; 汪领军
Original assignee: Guangdong Fuwa Engineering Manufacturing Co Ltd
Current assignee: Guangdong Fuwa Engineering Manufacturing Co Ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2023-01-06
Anticipated expiration: 2032-08-23

Abstract

The utility model discloses a wheel end structure of an engineering bridge and the engineering bridge, wherein the wheel end structure of the engineering bridge comprises a shaft head, a half shaft, a planetary reducer and a bracket; the planetary speed reducer comprises a sun gear, a planetary support, a planetary gear and a gear ring, the sun gear is connected to the part of the half shaft penetrating out of the outer end of the shaft head, the planetary gear is arranged on the planetary support, and the inner side of the planetary gear is meshed with the sun gear while the outer side is meshed with the gear ring; one end of the bracket is synchronously connected with the gear ring, the other end of the bracket forms a shaft sleeve which is sleeved outside the shaft head, a first spline is arranged on the inner surface of the shaft sleeve, a first supporting part is formed at one end of the inner surface of the shaft sleeve, a second supporting part is formed at the other end of the inner surface of the shaft sleeve, a second spline which is meshed with the first spline is arranged on the outer surface of the shaft head, and the first supporting part and the second supporting part are attached to the outer surface of the shaft head. The utility model discloses just avoided the spline department of bracket and axle sleeve cooperation department to receive great radial load, played the guard action of preferred to the spline, prolonged the life of bracket.

Description

Wheel end structure of engineering bridge and engineering bridge

Technical Field

The utility model relates to the technical field of vehicles, concretely relates to wheel end structure and engineering bridge of engineering bridge.

Background

The engineering bridge is widely applied to special operation vehicles such as loaders, excavators, port equipment and the like, and generally, a planetary reduction mechanism is arranged at the wheel end of the engineering bridge, power is transmitted to a hub arranged on a shaft head after being transmitted to the planetary reduction mechanism through a half shaft, a sun gear of the planetary reduction mechanism is arranged on the half shaft, a planetary support is connected with a shell of the planetary reduction mechanism, a gear ring is synchronously connected with the shaft head, after the planetary gear is arranged on the planetary support, the inner side and the outer side of the planetary gear are respectively meshed with the sun gear and the gear ring, the gear ring and the shaft head are required to be relatively fixed on the premise of meeting the assembly requirement, therefore, a bracket is required to be connected between the shaft head and the gear ring, one end of the bracket is sleeved on the shaft head and is connected with the shaft head through a spline, the other end of the bracket is embedded in the gear ring, and the outer surface of the bracket is provided with teeth meshed with the gear ring; when the planetary reduction mechanism works, one end of the bracket matched with the gear ring is radially extruded from the gear ring, so that the central axis of the bracket and the central axis of the shaft head are slightly inclined, and under the condition of deflection of the bracket, the spline at the matched position of the bracket and the shaft head is subjected to larger radial load, so that the spline is easily deformed, the service life of the bracket is influenced, and even the spline is caused to lose efficacy, thereby influencing the transmission efficiency of an engineering bridge.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art, the utility model aims at providing a wheel end structure of engineering bridge, its radial load that can effectual reduction bracket and the spline of spindle nose cooperation department bore, the life of extension bracket.

The second purpose of the utility model is to provide an engineering bridge.

In order to achieve the above object, the utility model adopts the following technical scheme:

the wheel end structure of the engineering bridge comprises a shaft head, a half shaft, a planetary reducer and a bracket;

the half shaft penetrates into the shaft head, and the outer end of the half shaft penetrates out of the outer end of the shaft head;

the planetary reducer comprises a sun gear, a planetary support, a planetary gear and a gear ring wound on the periphery of the planetary support, the sun gear is connected to the part of the half shaft penetrating out of the outer end of the shaft head, the planetary gear is arranged on the planetary support, and the inner side of the planetary gear is meshed with the sun gear while the outer side is meshed with the gear ring;

one end of the bracket is synchronously connected with the gear ring, the other end of the bracket forms a shaft sleeve which is sleeved outside the shaft head, a first spline is arranged on the inner surface of the shaft sleeve, a first supporting part is formed at one end of the inner surface of the shaft sleeve, a second supporting part is formed at the other end of the inner surface of the shaft sleeve, a second spline which is meshed with the first spline is arranged on the outer surface of the shaft head, and the first supporting part and the second supporting part are attached to the outer surface of the shaft head.

The spindle nose is provided with a step surface, a concave position is formed on the part of the spindle nose, which is positioned outside the step surface, and a first matching surface which is attached to the first supporting part is formed on the bottom surface of the concave position.

The second spline extends from the step surface to the inner side of the shaft head, a part, located at the inner side end of the second spline, of the outer surface of the shaft head forms a second matching surface attached to the second supporting part, and the top end of the spline tooth of the second spline is flush with the second matching surface.

The part of the inner surface of the shaft sleeve, which is close to the outer side end of the shaft sleeve, is provided with a convex part which protrudes towards the central axis of the shaft sleeve, the convex part is embedded in the concave position, and the inner edge surface of the convex part forms a first supporting part.

The shaft head is screwed with a locking nut which is abutted against the end face of the outer side of the shaft sleeve, and the bulge part is limited between the locking nut and the step face.

One end of the bracket is embedded in the gear ring, and the one end of the bracket is provided with a convex tooth meshed with the gear ring.

In order to achieve the second purpose, the utility model adopts the following technical scheme:

engineering bridge, including the wheel end structure of foretell engineering bridge.

The beneficial effects of the utility model reside in that:

the utility model discloses pass through the spline fit at bracket and spindle nose, through the surface laminating of first support and second support department and spindle nose in the both ends department of spline, make first support and second support bear radial load on the bracket, thereby guarantee that axle sleeve and spindle nose have higher axiality, the central axis of avoiding the axle sleeve takes place the incline with the central axis of spindle nose, just also avoided spline department to receive great radial load, play the guard action of preferred to the spline, the life of bracket has been prolonged.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

fig. 3 is a schematic view of the bracket and the shaft head in fig. 1.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

as shown in fig. 1, 2 and 3, for the utility model discloses a wheel end structure of engineering bridge, including spindle nose 10, half axle 20, planetary reducer, carrier 30, half axle 20 is worn in spindle nose 10, the outside end of half axle 20 is worn out by the outside end of spindle nose 10, planetary reducer is located the outside end of spindle nose 10 and half axle 20, it includes sun gear 21, planet carrier 24, planetary gear 22, ring gear 23, specifically, sun gear 21 connects the part that half axle 20 wears out the outside end of spindle nose 10, planetary gear 22 is installed on planet carrier 24, ring gear 23 is located the periphery of planet carrier 24, wherein, the inboard of planetary gear 22 meshes with sun gear 21, the outside meshes with ring gear 23, carrier 30 is connected between ring gear 23 and spindle nose 10, for making ring gear 23 and spindle nose 10 keep relatively fixed, specifically, one end of carrier 30 is connected with ring gear 23 in step, the other end forms a spline axle sleeve 310 that overlaps outside spindle nose 10, the internal surface of axle sleeve 310 has been seted up with first bearing 32, and one end of the internal surface of axle sleeve 310 forms first bearing 301, the other end of axle sleeve 310 forms second bearing 302, the second bearing 302 is located the spline sleeve 10 and the second bearing 302, the last bearing 302 is connected with the second bearing 11, the bearing 11 is equipped with the second bearing 11 and is equipped with the bearing on the axle sleeve 301 simultaneously.

The above technical scheme of the utility model, pass through the spline fit at bracket 30 and spindle nose 10, through the laminating of first supporting part 301 and second supporting part 302 in the both ends department of spline and spindle nose 10's surface, make first supporting part 301 and second supporting part 302 bear radial load on the bracket 30, thereby guarantee that the axle sleeve has higher axiality with the spindle nose, the central axis of avoiding the axle sleeve takes place the incline with the central axis of spindle nose 10, the spline department has also been avoided receiving great radial load, play the guard action of preferred to the spline, bracket 30's life has been prolonged.

In the preferred embodiment, a step surface 13 is provided on the stub shaft 10, the stub shaft 10 has a relatively large outer diameter at a portion inside the step surface 13, and the portion of the stub shaft 10 outside the step surface 13 has a relatively small diameter, so that the portion of the stub shaft 10 outside the step surface 13 forms a recess 12, and the bottom surface of the recess 12 forms a first mating surface 101, which first mating surface 101 abuts the first support 301. The second spline 11 extends from the step surface 13 to the inner side of the spindle nose 10, and a second matching surface 102 is formed on the surface of the spindle nose 10 at the inner end of the second spline 11, and the second matching surface 102 is abutted with the second supporting part 302; because the step surface 13 is arranged on the outer surface of the spindle nose 10, when the second spline 11 on the surface of the spindle nose 10 is machined, the second spline 11 can be machined from the step surface 13 along the axial direction of the spindle nose 10 through a milling process, and a part of the position of the part, located on the outer side of the second spline 11, on the surface of the spindle nose 10 can be reserved, so that the reserved part can be attached to the first supporting part 301, and the spindle nose 10 and the shaft sleeve 310 can be supported at two ends of the spline respectively; the first mating surface 101 that mates with the first support portion 301 is disposed on the bottom surface of the recess 12, so as to avoid damage to the first mating surface 101 when the spline 11 is machined.

Suitably, the inner surface of the sleeve 310 near the outer end of the sleeve 310 is provided with a protrusion 31, the protrusion 31 protrudes from the inner surface of the sleeve 310 toward the central axis of the sleeve 310, the protrusion 31 is disposed in the recess 12, and the inner edge surface of the protrusion 31 forms the first support portion 301.

The spindle nose 10 is screwed with a locking nut 50, the locking nut 50 is screwed on the part of the spindle nose 10 penetrating out of the outer end of the shaft sleeve 310, the locking nut 50 abuts against the outer end face of the shaft sleeve 310, and the locking nut 50 and the step face 13 form a limiting mechanism to limit the bulge 31 between the locking nut 50 and the step face 13.

One end of the carrier 30 is embedded in the ring gear 23, and a convex tooth is arranged on the outer periphery of the one end of the carrier 30, and the convex tooth is meshed with the tooth in the ring gear 23, so that the one end of the carrier 30 and the ring gear 23 are synchronously connected, and the ring gear 23 and the shaft head 10 are synchronously connected by matching the first spline and the second spline.

The utility model discloses an engineering bridge includes the wheel end structure of foretell engineering bridge, and other structures of engineering bridge are the same with prior art, do not do the detailed description here.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still make modifications to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some technical features, and these modifications or substitutions do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The wheel end structure of the engineering bridge is characterized by comprising a shaft head, a half shaft, a planetary reducer and a bracket;

the planetary reducer comprises a sun gear, a planetary support, a planetary gear and a gear ring wound on the periphery of the planetary support, the sun gear is connected with the part of the half shaft penetrating out of the outer side end of the shaft head, the planetary gear is arranged on the planetary support, and the inner side of the planetary gear is meshed with the sun gear while the outer side of the planetary gear is meshed with the gear ring;

2. The wheel end structure of an engineering bridge according to claim 1, wherein the stub shaft is provided with a step surface, a portion of the stub shaft located outside the step surface forms a recess, and a bottom surface of the recess forms a first fitting surface against the first support portion.

3. The wheel end structure of an engineering bridge according to claim 2, wherein the second spline extends from the stepped surface toward the inner side of the stub shaft, a portion of the outer surface of the stub shaft at the inner end of the second spline forms a second mating surface against the second support portion, and the tip of the spline tooth of the second spline is flush with the second mating surface.

4. The wheel end structure of an engineering bridge according to claim 2, wherein a portion of the inner surface of the boss near the outer end of the boss is provided with a projection projecting toward the central axis of the boss, the projection is fitted in the recess, and an inner edge surface of the projection forms the first support portion.

5. The wheel end structure of an engineering bridge according to claim 4, wherein a lock nut is screwed to the axle head, the lock nut abuts against an outer end surface of the boss, and the boss is defined between the lock nut and the step surface.

6. The wheel end structure of a working bridge according to claim 1, wherein one end of the carrier is embedded in the ring gear, and the one end of the carrier is provided with a convex tooth that engages with the ring gear.

7. An engineering bridge, comprising a wheel end structure of an engineering bridge according to any one of claims 1-6.