CN209245248U

CN209245248U - A kind of center-rotary joint of built-in dustband

Info

Publication number: CN209245248U
Application number: CN201822160021.6U
Authority: CN
Inventors: 黄荣桂; 周积才
Original assignee: YULIN FUSHAN HYDRAULIC COMPONENTS MANUFACTURING Co Ltd
Current assignee: YULIN FUSHAN HYDRAULIC COMPONENTS MANUFACTURING Co Ltd
Priority date: 2018-12-21
Filing date: 2018-12-21
Publication date: 2019-08-13
Anticipated expiration: 2028-12-21

Abstract

The utility model relates to a kind of center-rotary joints of built-in dustband, including spill retaining ring, rotating shaft, revolving body, it is characterized in that, the revolving body is built-in to be equipped with dust-proof ring recess, and place dustband, revolving body port is equipped with raised step, it is covered with spill retaining ring, and with screw-driving on rotating shaft, the revolving body is assemblied on rotating shaft, the gap location of revolving body and rotating shaft smears lubricating grease, to achieve the purpose that lubrication and dustproof and waterproof.The utility model compared with prior art, have it is simple and compact for structure, processing and manufacturing be easy, good airproof performance, failure rate is low, and the reliability of center-rotary joint is greatly improved with simple structure.

Description

A kind of center-rotary joint of built-in dustband

Technical field

The utility model belongs to engineering machinery field, especially a kind of center-rotary joint of built-in dustband.

Background technique

The center-rotary joint that rolling clamp in engineering machinery on wheel excavator uses is mounted on the front end of dipper, Protection far from fuselage covering, often has the sundries such as sandstone, dust, water to fall on center-rotary joint.Currently, center revolution Connector is sealed using conventional seal structure, the i.e. outermost end of rotating shaft using dustband, and external dustband is belonged to Structure.When center-rotary joint is connected on fixture, the revolving body mounting plane at dustband end cooperates with fixture, connect, It is concordant between mounting plate at dustband, have at the dustband of this type an even formation pit lower than mounting plate, in this way when sandstone, It when the sundries such as dust are fallen on a mounting board, will accumulate on a mounting board, dustband is at every moment contacted with sundries, is especially had Mud is formed when rainwater, is deposited at dustband, dustband abnormal damage is caused, and in turn results in internal sealing ring damage, from And make swivel joint failure, oil leak.The failure rate of the center-rotary joint of this structure is high, and reliability is low.

Summary of the invention

The purpose of this utility model is to provide built in a kind of simple and compact for structure, good airproof performance, safe and reliable one kind The center-rotary joint of formula dustband.

The technical solution taken in order to achieve the above objectives is as follows:

1, a kind of center-rotary joint of built-in dustband, including spill retaining ring, rotating shaft, revolving body, feature exist In the revolving body is built-in to be equipped with dust-proof ring recess, and places dustband, and revolving body port is equipped with raised step, is kept off with spill Circle covers, and with screw-driving on rotating shaft, the revolving body is assemblied on rotating shaft, the gap of revolving body and rotating shaft Smear lubricating grease in place.

2, a kind of center-rotary joint of built-in dustband as described in technical solution 1, wherein the spill retaining ring The step on revolving body can be sheltered from, spill retaining ring is higher by mounting plane.

The utility model compared with prior art, have it is simple and compact for structure, processing and manufacturing be easy, good airproof performance, failure Rate is low, and the reliability of center-rotary joint is greatly improved with simple structure.

Detailed description of the invention:

Fig. 1 is the overall structure main view of the utility model,

Fig. 2 is the overall structure top view of the utility model,

Fig. 3 is A-A cross-sectional view in Fig. 2 of the utility model,

Fig. 4 is the spill retaining ring part main view of the utility model,

Fig. 5 is the spill retaining ring part main view of the utility model,

Fig. 6 is the rotating shaft main view of the utility model,

Fig. 7 is the revolving body main view of the utility model.

In FIG. 1 to FIG. 7, spill retaining ring (1), rotating shaft (2), revolving body (3), screw (4), step (5), dust-proof ring recess (6), mounting plane (7).

Specific embodiment:

The utility model is further described with reference to the accompanying drawings and examples:

Referring to Figure 1 to Figure 7 shown in, a kind of center-rotary joint of built-in dustband, including spill retaining ring, rotating shaft, Revolving body, wherein the revolving body 3 is built-in to be equipped with dust-proof ring recess 6, and places dustband, and 3 port of revolving body is equipped with raised platform Rank 5 is covered with spill retaining ring 1, and is tightened on rotating shaft 2 with screw 4, and the revolving body 3 is assemblied on rotating shaft 2, is returned Swivel 3 and the gap location of rotating shaft 2 smear lubricating grease, to achieve the purpose that lubrication and dustproof and waterproof.

The spill retaining ring 1 can shelter from the step 5 on revolving body 3, and spill retaining ring 1 is higher by mounting plane 7.

When the center-rotary joint is connected on fixture, 3 mounting plane of revolving body cooperates with fixture, connect, spill Retaining ring 1 is higher by mounting plate, and in this way when the sundries such as sandstone, dust are fallen on a mounting board, can flow away from lower will not be always Accumulation on a mounting board so that at center-rotary joint upper end the service life of sealing element improve 3 times or more, greatly improve reliability.

Claims

1. a kind of center-rotary joint of built-in dustband, including spill retaining ring, rotating shaft, revolving body, which is characterized in that institute The revolving body (3) stated is built-in to be equipped with dust-proof ring recess (6), and places dustband, and revolving body (3) port is equipped with raised step (5), uses Spill retaining ring (1) covers, and is tightened on rotating shaft (2) with screw (4), and the revolving body (3) is assemblied in rotating shaft (2) On, the gap location of revolving body (3) and rotating shaft (2) smears lubricating grease.

2. a kind of center-rotary joint of built-in dustband as described in claim 1, which is characterized in that the spill gear Circle (1) can shelter from the step (5) on revolving body (3), and spill retaining ring (1) is higher by mounting plane (7).