CN214092718U - Composite roller bearing of excavator - Google Patents

Abstract

The utility model belongs to the technical field of the engineering machine tool accessory, a compound gyro wheel bearing of excavator is provided. The method comprises the following steps: the oil-saving device comprises a main shell, a mounting group shell, a circumferential bearing and a central bearing, wherein the main shell is provided with a circumferential end face abutting position, a central cavity and an oil spilling channel, and the mounting group shell is fixedly mounted on the main shell; the circumferential bearing is rotatably arranged on the mounting assembly shell and is rotatably connected with the mounting assembly shell; the circumference bearing comprises an outer rotor and a roller set, the roller set is rotatably arranged in the outer circumference, and the outer rotor is rotatably connected with the roller set; the center bearing is rotatably arranged in the main shell and comprises a center shaft and a rolling outer shaft, the rolling outer shaft is rotatably arranged on the center shaft, and the center shaft is rotatably connected with the rolling outer shaft. The composite roller bearing of the excavator can realize local replacement without overall disassembly and replacement, and the central bearing is taken out, so that the maintenance efficiency is improved, and the composite roller bearing is suitable for industrial popularization.

Description

Composite roller bearing of excavator

Technical Field

The utility model relates to an engineering machine tool accessory technical field, concretely relates to compound gyro wheel bearing of excavator.

Background

An excavator, also known as a digging machine, is an earth moving machine that excavates materials higher or lower than a bearing surface with a bucket and loads the materials into a transport vehicle or unloads the materials to a stockyard; in the operation process of the excavator, the excavator is mostly applied to high-strength working scenes, so that the composite roller bearing of the excavator has the strength requirement, and meanwhile, the reliability requirement of machinery in the engineering process is considered, so that the composite roller bearing of the excavator can be conveniently maintained after certain faults occur. However, once a fault occurs in the conventional composite roller bearing, the composite roller bearing needs to be integrally disassembled, then each component is disassembled one by one, finally the fault is eliminated or a new component is replaced, and the composite roller bearing is integrally assembled again and then installed.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a compound gyro wheel bearing of excavator improves troubleshooting efficiency, reduces the assemble duration.

The utility model provides a pair of compound gyro wheel bearing of excavator, include: the oil spill passage is positioned in the main shell and penetrates through two end faces of the main shell; the installation assembly shell is fixedly installed on the main shell and is positioned on the circumferential end face abutting position, the installation assembly shell comprises a circumferential outer shell and an end shell, the circumferential outer shell is installed on the circumferential end face abutting position, the end shell is fixedly installed on the circumferential outer shell, and the circumferential outer shell is detachably connected with the end shell; the circumferential bearing is rotatably arranged on the mounting assembly shell and is positioned on the outer surface of the circumferential shell, and the circumferential bearing is rotatably connected with the mounting assembly shell;

the circumference bearing expands an outer rotor and a roller set, the roller set is rotatably installed outside the circumference, the outer rotor is rotatably installed on the roller set, and the outer rotor is rotatably connected with the roller set; the center bearing, the center bearing rotates to be installed in the main casing body, and be located central cavity department, the center bearing includes the axis and rolls the outer axle, axis both ends and circumference shell inner wall butt, the axis periphery respectively with end shell inner wall and main casing body terminal surface butt, roll outer rotation of axle and install epaxial, and run through the end shell, the axis with roll outer rotation of axle and connect.

Further, still include the shield, the shield is installed install the group shell with between the circumference bearing.

Furthermore, the overflow oil duct is provided with two positions, the circumferential shell is provided with a through hole, and the overflow oil duct is communicated with the through hole.

Furthermore, the middle shaft is provided with a middle flow through hole and an overflow hole, the middle flow through hole is positioned at the axis of the middle shaft, is concentric with the through hole and penetrates through the middle shaft, the axis of the overflow hole is vertical to the axis of the middle flow through hole and is positioned in the rolling outer shaft, and the middle flow through hole is communicated with the overflow hole.

Furthermore, the roller group also comprises a reducing roller, the reducing roller is provided with a central hole and a sub-plate, and the sub-plate is provided with a plurality of positions and is distributed around the central hole.

According to the above technical scheme, the utility model provides a pair of compound gyro wheel bearing of excavator's beneficial effect:

(1) the circumferential end face abutting position, the central cavity and the oil spilling channel are arranged in the main shell, so that the circumferential bearing and the central bearing can be conveniently installed and debugged, and continuous oil spilling lubrication can be performed through the oil spilling channel;

(2) meanwhile, an external installation shell of the original integrated design is changed into an installation assembly shell, a circumferential shell and an end shell are respectively designed, and the circumferential shell and the end shell are detachably connected, so that the end shell is directly detached when the central bearing needs to be replaced or maintained in the actual application process, and the central bearing can be replaced or maintained.

(3) And the application of the composite bearing can be realized through the installed circumferential bearing and the central bearing, so that the application range can be further improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention, the drawings that are needed to describe the embodiments or the prior art will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

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

FIG. 2 is a schematic cross-sectional view at C of FIG. 1;

FIG. 3 is a schematic view of a variable diameter roller;

reference numerals: the main casing 1, the circumferential end face abutting position 11, the central cavity 12, the oil spilling channel 13, the mounting group casing 2, the circumferential casing 21, the through hole 211, the end casing 22, the circumferential bearing 3, the outer rotor 31, the roller group 32, the reducing roller 321, the central hole 3211, the branch plate 3212, the central bearing 4, the central shaft 41, the central flow through hole 411, the spilling hole 412, the rolling outer shaft 42 and the dust cover 5.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 to 3, the composite roller bearing of the excavator provided by this embodiment can be partially replaced without being entirely disassembled and replaced, and the central bearing 4 can be taken out, so as to improve the maintenance efficiency.

A kind of excavator compound gyro wheel bearing, including the main body 1, mount the group shell 2, circumference bearing 3 and central bearing 4, the main body 1 has end surface of circumference to abut against the position 11, central cavity 12 and oil spilling channel 13, the end surface of circumference abuts against the position 11 and locates in the circumference of main body 1, the central cavity 12 locates at the end center of main body 1, the oil spilling channel 13 locates in main body 1, and run through two end surfaces of main body 1; the installation assembly shell 2 is fixedly installed on the main shell body 1 and is positioned on the circumferential end face abutting position 11, the installation assembly shell 2 comprises a circumferential outer shell 21 and an end shell 22, the circumferential outer shell 21 is installed on the circumferential end face abutting position 11, the end shell 22 is fixedly installed on the circumferential outer shell 21, and the circumferential outer shell 21 is detachably connected with the end shell 22; the circumferential bearing 3 is rotatably arranged on the mounting assembly shell 2 and is positioned on the outer surface of the circumferential shell 21, and the circumferential bearing 3 is rotatably connected with the mounting assembly shell 2; the circumference bearing 3 comprises an outer rotor 31 and a roller group 32, the roller group 32 is rotatably arranged in the outer circumference, the outer rotor 31 is rotatably arranged on the roller group 32, and the outer rotor 31 is rotatably connected with the roller group 32; the central bearing 4 is rotatably installed in the main casing 1 and located in the central cavity 12, the central bearing 4 includes a central shaft 41 and a rolling outer shaft 42, two ends of the central shaft 41 are abutted to the inner wall of the circumferential outer casing 21, the circumferential surface of the central shaft 41 is abutted to the inner wall of the end casing 22 and the end surface of the main casing 1, the rolling outer shaft 42 is rotatably installed on the central shaft 41 and penetrates through the end casing 22, and the central shaft 41 is rotatably connected with the rolling outer shaft 42. In practical application, the circumferential end surface abutting position 11, the central cavity 12 and the oil spilling channel 13 are arranged in the main shell 1, so that the circumferential bearing 3 and the central bearing 4 can be conveniently installed and debugged, and continuous oil spilling lubrication can be performed through the oil spilling channel 13; meanwhile, an external installation shell of the original integrated design is changed into the installation assembly shell 2, the circumferential shell 21 and the end shell 22 are respectively designed, and the circumferential shell 21 and the end shell 22 are detachably connected, so that the end shell 22 is directly detached when the central bearing 4 needs to be replaced or maintained in the actual application process, and the central bearing 4 can be replaced or maintained. And the application of the composite bearing can be realized through the arranged circumferential bearing 3 and the central bearing 4, so that the application range can be further improved.

Of course, the dust-proof cover 5 is further included for the dust-proof requirement because the actual use scene is mostly used at the construction site, and the dust-proof cover 5 is installed between the installation assembly shell 2 and the circumferential bearing 3, so that in the actual application, dust can be reduced to enter the bearing, the abrasion is reduced, and the service life is prolonged.

Meanwhile, in order to keep the use of the composite bearing, the oil spilling channel 13 is provided with two positions, the circumferential shell 21 is provided with a through hole 211, and the oil spilling channel 13 is communicated with the through hole 211. Lubricating oil can enter the circumferential bearing 3 through the through hole 211, and the bearing at the position is effectively lubricated and continuously lubricated, so that the use is facilitated.

Of course, continuous lubrication is also required for the center bearing 4, the center shaft 41 has a center flow through hole 411 and an overflow hole 412, the center flow through hole 411 is located at the axis of the center shaft 41, is concentric with the through hole 211 and penetrates through the center shaft 41, the axis of the overflow hole 412 is perpendicular to the axis of the center flow through hole 411 and is located in the rolling outer shaft 42, and the center flow through hole 411 is communicated with the overflow hole 412. In practice, the lubricating oil can enter the overflow hole 412 through the central through hole 411 and further enter the outer rolling shaft 42, so as to lubricate the central bearing 4.

In order to reduce the influence caused by the rotation of the circumferential bearing 3 when the central bearing 4 is maintained, the roller group 32 further includes a variable diameter roller 321, the variable diameter roller 321 has a central hole 3211 and a split plate 3212, and the split plate 3212 has a plurality of positions and is distributed around the central hole 3211. Wherein the diameter-variable roller 321 is at least one position in the roller group 32. In practical application, bolts or other columnar objects are inserted into the central holes 3211 and are continuously pressed down, so that the sub-plates 3212 around the central holes are radially diffused and gradually increased, and finally, the sub-plates are clamped between the circumferential shell 21 and the outer rotor 31, so that the outer rotor 31 cannot rotate, and the circumferential bearing 3 cannot rotate, thereby facilitating maintenance of the central bearing 4.

To sum up, this compound gyro wheel bearing of excavator, reasonable in design makes things convenient for the dismouting, utilizes the diameter change of reducing gyro wheel 321 simultaneously for circumference bearing 3 can't rotate, makes things convenient for dismouting center bearing 4, and the excessive oil duct 13 design of adoption simultaneously makes things convenient for this compound gyro wheel bearing's whole lubrication, more is applicable to the trade and promotes.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims (5)

1. An excavator composite roller bearing, comprising:

the oil spill passage is positioned in the main shell and penetrates through two end faces of the main shell;

the installation assembly shell is fixedly installed on the main shell and is positioned on the circumferential end face abutting position, the installation assembly shell comprises a circumferential outer shell and an end shell, the circumferential outer shell is installed on the circumferential end face abutting position, the end shell is fixedly installed on the circumferential outer shell, and the circumferential outer shell is detachably connected with the end shell;

the circumferential bearing is rotatably arranged on the mounting assembly shell and is positioned on the outer surface of the circumferential shell, and the circumferential bearing is rotatably connected with the mounting assembly shell; the circumference bearing comprises an outer rotor and a roller set, the roller set is rotatably arranged in the circumference, the outer rotor is rotatably arranged on the roller set, and the outer rotor is rotatably connected with the roller set;

the center bearing, the center bearing rotates to be installed in the main casing body, and be located central cavity department, the center bearing includes the axis and rolls the outer axle, axis both ends and circumference shell inner wall butt, the axis periphery respectively with end shell inner wall and main casing body terminal surface butt, roll outer rotation of axle and install epaxial, and run through the end shell, the axis with roll outer rotation of axle and connect.

2. The excavator composite roller bearing of claim 1 further comprising a dust cap mounted between the mounting block housing and the circumferential bearing.

3. The excavator composite roller bearing of claim 1, wherein the oil spill passage has two places, the circumferential housing has a through hole, and the oil spill passage communicates with the through hole.

4. The excavator composite roller bearing of claim 3, wherein the central shaft has a central through hole and an overflow hole, the central through hole is located at the axis of the central shaft, concentric with the through hole, and penetrates through the central shaft, the axis of the overflow hole is perpendicular to the axis of the central through hole and is located in the rolling outer shaft, and the central through hole is communicated with the overflow hole.

5. The excavator composite roller bearing of claim 1, wherein the roller group further comprises a reducing roller, the reducing roller is provided with a central hole and a sub-plate, and the sub-plate is provided with a plurality of positions and distributed around the central hole.

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