CN217519055U

CN217519055U - Lubricated seal structure of articulated bearing in middle of wheel loader

Info

Publication number: CN217519055U
Application number: CN202221186556.0U
Authority: CN
Inventors: 华文波; 丘燕琴; 赖小英; 索沛沛; 杭桂花
Original assignee: Lonking Shanghai Machinery Manufacturing Co Ltd
Current assignee: Lonking Shanghai Machinery Manufacturing Co Ltd
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-09-30
Anticipated expiration: 2032-05-09

Abstract

The utility model relates to a lubricated seal structure of hinge bearing in middle of wheel loader, the hinge bearing assembly is downthehole at articulated slab in the middle, both ends are passed through bearing cap and stay bolt and nut locking and middle articulated slab fixed connection about the hinge bearing, be equipped with the sealing washer between bearing cap and the hinge bearing, the round pin axle assembles in the hinge bearing, be provided with the axle sleeve under the epaxial lower extreme of cup joint between the hinge bearing in articulated slab and the middle articulated slab down, it cup joints the epaxial last axle sleeve of round pin to go up to be provided with between the hinge bearing in articulated slab and the middle articulated slab, and be equipped with O type circle under the lower extreme between axle sleeve and the round pin axle, it is equipped with O type circle to go up between axle sleeve and the round pin axle, the round pin axle both ends are respectively with the bolt fastening under articulated slab and on the articulated slab, and make round pin axle and sealing washer and O type circle produce to extrude and form sealedly. The utility model discloses can prevent that impurity such as water from permeating hinge bearing in, the life of lubricated and relevant spare part of protection bearing reduces maintenance and maintenance.

Description

Lubricated seal structure of articulated bearing in middle of wheel loader

Technical Field

The utility model relates to an articulated bearing lubrication sealing structure in middle of loader belongs to loader technical field.

Background

At present, a loader generally adopts a large-span hinged structure, a hinged bearing is installed at a hinged part, the hinged bearing needs to bear various forces, moments and impact linkage loads, the distance between the hinged part and the ground is short under the large-span hinge, the loader wades into water under special severe working conditions, water easily permeates into the lower hinged mechanism, the service life of bearing lubrication and structural part components is influenced, and in order to ensure the reliability of the performance of the hinged bearing of the loader, the hinged bearing in the middle of the loader needs to adopt a sealed lubrication structure, the service life and the reliability of the bearing and the components of the whole machine are improved, the abrasion and the daily maintenance of the bearing are reduced, and the long-time wading operation of the whole machine is met.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: how to protect the service life of parts of the middle bearing under the condition of wading operation, and the lubricating and sealing structure of the middle hinged bearing of the wheel loader is provided.

In order to solve the technical problem, the technical scheme of the utility model is that: a lubrication sealing structure of a middle hinged bearing of a wheel loader comprises a middle hinged plate, a hinged bearing, a bearing cover, a pin shaft, a lower hinged plate, an upper shaft sleeve, a lower shaft sleeve and an O-shaped ring, wherein the hinged bearing is assembled in the middle hinged plate hole, the upper end and the lower end of the hinged bearing are fixedly connected with the middle hinged plate through the bearing cover, a long bolt and a nut lock, a sealing ring is assembled between the bearing cover and the hinged bearing, the pin shaft is assembled in the hinged bearing hole, the lower end lower shaft sleeve sleeved on the pin shaft is arranged between the lower hinged plate and the hinged bearing in the middle hinged plate, the upper shaft sleeve sleeved on the pin shaft is arranged between the upper hinged plate and the hinged bearing in the middle hinged plate, the O-shaped ring is assembled between the lower end lower shaft sleeve and the pin shaft, and the two ends of the pin shaft are respectively fixed on the lower hinged plate and the upper hinged plate through bolts, and the pin shaft, the sealing ring and the O-shaped ring are extruded to form sealing.

Further, the bearing cover is formed by processing a steel plate, and a step groove for installing a sealing ring is formed in the inner side of the bearing cover.

Furthermore, the bearing cover and the middle hinged plate are provided with bolt holes.

Further, the upper shaft sleeve is formed by processing a seamless steel pipe, and an inner groove for assembling and fixing an O-shaped ring is formed in the inner hole wall of the upper shaft sleeve.

Furthermore, the lower shaft sleeve is formed by processing a seamless steel pipe, and an inner groove for assembling and fixing an O-shaped ring is formed in the inner hole wall of the lower shaft sleeve.

Furthermore, O-shaped rings arranged in grooves of the upper shaft sleeve and the lower shaft sleeve are connected with the pin shaft in an interference fit manner.

The utility model has the advantages that: when the loader is in wading operation, impurities such as water can be prevented from permeating into the bearing, the lubrication of the bearing and the service life of relevant parts are protected, and the maintenance is reduced.

Drawings

Fig. 1 is a schematic view of a lubricating and sealing structure of a middle hinge bearing of a wheel loader according to the present invention;

FIG. 2 is a front sectional view of a middle hinged upper and lower bearing structure of a loader;

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a front cross-sectional view of the middle hinged upper bushing structure of the loader;

FIG. 5 is a top view of FIG. 4;

FIG. 6 is a front cross-sectional view of the structure of the middle hinged lower bushing of the loader;

fig. 7 is a top view of fig. 6.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

As shown in figure 1, the utility model discloses a lubricated seal structure of wheel loader middle hinged bearing, including middle articulated slab 4, hinged bearing 6, bearing cap 13, round pin axle 9, lower articulated slab 3, last articulated slab 7, upper shaft cover 11, lower axle sleeve 14, O type circle 10 etc..

The hinge bearing 6 is assembled in a hole of a middle hinge plate 4, the upper end and the lower end are locked and fixed on the hinge plate 4 through a bearing cover 13, a long bolt 5 and a nut, a sealing ring 12 is assembled between the bearing cover 13 at the upper end and the lower end and the hinge bearing 6, a pin shaft 9 is assembled in the hole of the hinge bearing 6, a lower end lower shaft sleeve 14 sleeved on the pin shaft 9 is arranged between the lower hinge plate 3 and the hinge bearing 6 in the middle hinge plate 4, an upper shaft sleeve 11 sleeved on the pin shaft 9 is arranged between the upper hinge plate 7 and the hinge bearing 6 in the middle hinge plate 4, and an O-shaped ring 10 is assembled between the lower end lower shaft sleeve 14 and the pin shaft 9, an O-shaped ring 10 is assembled between the upper shaft sleeve 11 and the pin shaft 9, two ends of the pin shaft 9 are fixed on the lower hinged plate 3 and the upper hinged plate 7 and are locked and fixed by the bolt 1, the lower end cover 2 and the bolt 8 respectively, so that the pin shaft 9, the sealing ring 12 and the O-shaped ring 10 are extruded to form sealing.

As shown in figures 2 and 3, a bearing cover 13 for assembling and fixing a bearing is formed by processing a steel plate, a step groove for installing a sealing ring 12 is arranged on the inner side of the bearing cover 13, and bolt holes are arranged on the bearing cover 13 and the middle hinged plate 4.

As shown in figures 4 and 5, an upper shaft sleeve 11 for assembling and fixing is formed by processing a seamless steel pipe, and an inner groove for assembling and fixing an O-shaped ring 10 is arranged on the inner hole wall of the upper shaft sleeve 11.

As shown in fig. 6 and 7, a lower shaft sleeve 14 for assembling and fixing is formed by processing a seamless steel pipe, and an inner groove for assembling and fixing the O-ring 10 is formed on the inner hole wall of the lower shaft sleeve 14.

Claims

1. The utility model provides a lubricated seal structure of hinge bearing in middle of wheel loader which characterized in that: comprises a middle hinged plate, a hinged bearing, a bearing cover, a pin shaft, a lower hinged plate, an upper shaft sleeve, a lower shaft sleeve and an O-shaped ring, the hinge bearing is assembled in the hole of the middle hinge plate, the upper end and the lower end of the hinge bearing are locked and fixedly connected with the middle hinge plate through a bearing cover, a long bolt and a nut, a sealing ring is assembled between the bearing cover and the hinged bearing, the pin shaft is assembled in a hole of the hinged bearing, a lower end lower shaft sleeve sleeved on the pin shaft is arranged between the lower hinged plate and the hinged bearing in the middle hinged plate, an upper shaft sleeve sleeved on the pin shaft is arranged between the upper hinge plate and the hinge bearing in the middle hinge plate, an O-shaped ring is arranged between the lower end lower shaft sleeve and the pin shaft, an O-shaped ring is arranged between the upper shaft sleeve and the pin shaft, and two ends of the pin shaft are respectively fixed on the lower hinged plate and the upper hinged plate by bolts, and the pin shaft, the sealing ring and the O-shaped ring are extruded to form sealing.

2. The wheel loader intermediate hinge bearing lubricating and sealing structure according to claim 1, wherein: the bearing cover is formed by processing a steel plate, and a step groove for mounting a sealing ring is formed in the inner side of the bearing cover.

3. The wheel loader intermediate hinge bearing lubricating and sealing structure according to claim 1, wherein: and bolt holes are formed in the bearing cover and the middle hinged plate.

4. The wheel loader intermediate articulation bearing lubricating and sealing structure of claim 1, characterized in that: the upper shaft sleeve is formed by processing a seamless steel pipe, and an inner groove for assembling and fixing an O-shaped ring is formed in the inner hole wall of the upper shaft sleeve.

5. The wheel loader intermediate articulation bearing lubricating and sealing structure of claim 1, characterized in that: the lower shaft sleeve is formed by processing a seamless steel pipe, and an inner groove for assembling and fixing an O-shaped ring is formed in the inner hole wall of the lower shaft sleeve.

6. The wheel loader intermediate hinge bearing lubricating and sealing structure according to claim 1, wherein: and O-shaped rings arranged in the grooves of the upper shaft sleeve and the lower shaft sleeve are connected with the pin shaft in an interference fit manner.