KR20130046731A - Bushing having prevent separation - Google Patents

Bushing having prevent separation Download PDF

Info

Publication number
KR20130046731A
KR20130046731A KR1020110111276A KR20110111276A KR20130046731A KR 20130046731 A KR20130046731 A KR 20130046731A KR 1020110111276 A KR1020110111276 A KR 1020110111276A KR 20110111276 A KR20110111276 A KR 20110111276A KR 20130046731 A KR20130046731 A KR 20130046731A
Authority
KR
South Korea
Prior art keywords
bushing
housing
circumferential direction
inner circumference
separation prevention
Prior art date
Application number
KR1020110111276A
Other languages
Korean (ko)
Inventor
이형욱
Original Assignee
볼보 컨스트럭션 이큅먼트 에이비
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 볼보 컨스트럭션 이큅먼트 에이비 filed Critical 볼보 컨스트럭션 이큅먼트 에이비
Priority to KR1020110111276A priority Critical patent/KR20130046731A/en
Publication of KR20130046731A publication Critical patent/KR20130046731A/en

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/14—Booms only for booms with cable suspension arrangements; Cable suspensions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/12—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load
    • F16C17/20—Sliding-contact bearings for exclusively rotary movement characterised by features not related to the direction of the load with emergency supports or bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/08—Attachment of brasses, bushes or linings to the bearing housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2350/00—Machines or articles related to building
    • F16C2350/26—Excavators

Abstract

PURPOSE: A busing with a separation preventing structure is provided to increase frictional force by increasing a contact area of the bushing and a housing unit. CONSTITUTION: A busing(12) with a separation preventing structure comprises a separation preventing unit(13). The separation preventing unit is formed into a shape corresponding to the inner circumference of a housing unit(11) and the outer surface of the bushing and prevents the separation of the bushing from the inner circumference of the housing unit by a load generated in a task. The separation preventing unit includes a recessed groove(14) and a protrusion unit(15). The recessed groove is formed in the inner circumference of the housing unit in a circumferential direction. The protrusion unit is protrude-formed in the outer surface of the bushing in a circumferential direction corresponding to the recessed groove.

Description

Bushing having prevent separation

The present invention relates to a bushing provided with a separation prevention structure, and more particularly, a bushing mounted to reduce frictional resistance between a housing and a fixing pin of a structure such as a boom or an arm that is articulated during operation. The present invention relates to a bushing provided with a release preventing structure that prevents the bushing from being separated by a structural shape of the bushing even when a load, vibration, or the like is generated in the bushing.

Bushing according to the prior art shown in Figure 1 (a, b), when connecting the structure such as the boom, arm, etc. constituting the excavator working device by the fixing pin to enable the joint movement, integral with the structure (1) by welding And a bushing 3 mounted to the housing 2 to reduce frictional resistance generated between the housing 2 and the fixing pin (not shown).

When the bushing 3 is attached to the housing 2 described above, the inner periphery of the housing 2 and the outer periphery of the bushing 2 are precisely machined within a tolerance range, and then the housing ( The bushing (3) is forcibly pressed into 2) to engage. Alternatively, after manufacturing the outer diameter of the bushing 3 to a size slightly larger than the tolerance of the inner diameter of the housing 2, the outer diameter of the bushing 3 is reduced by the nitrogen cooling process to be coupled to the housing 2 by fit. do.

As described above, when the fixing pin is supported by the bushing 3 mounted on the housing 2 welded to the structure 1 such as a boom, the bushing 3 may be subjected to loads, vibrations, and the like in the circumferential direction. It is possible to suppress detachment of the bushing 3 from the housing 2 by the frictional force generated between the housing 2 and the bushing 3.

However, since the frictional force generated between the housing 2 and the bushing 3 described above is relative to the assembly of the bushing 3 with respect to the housing 2, the housing 2 and the bushing 3 are machined within a tolerance range. Processing. For this reason, as the housing 2 and the bushing 3 are assembled after processing within the maximum tolerance range, it is difficult to prevent the bushing 3 from being separated from the housing 2.

Embodiment of the present invention, even if the bushing mounted on the housing to reduce the frictional resistance between the housing and the fixed pin of the structure of the boom, arm, etc., even if the load, vibration, etc. in the bushing during operation, the structural shape of the bushing And a bushing with a release preventing structure which prevents it from being dislodged by and to increase the frictional force due to an increase in the bushing contact area with respect to the housing.

Bushing provided with a separation prevention structure according to an embodiment of the present invention,

In the bushing to reduce the frictional resistance generated between the housing and the fixing pin of the structure when the structure is jointly connected by the fixing pin to enable joint movement,

The inner circumference of the housing and the outer surface of the bushing are formed in a shape corresponding to each other, and the bushing mounted on the inner circumference of the housing is provided with a departure prevention portion to prevent the departure from the housing due to the load generated during operation.

According to a preferred embodiment, the above-described separation prevention portion is formed of an annular groove formed in the circumferential direction at the inner circumference of the housing, and a strip-shaped protrusion formed protruding in the circumferential direction on the outer surface of the bushing to correspond to the groove.

The above-mentioned separation preventing part is composed of a strip-shaped protrusion formed in the circumferential direction on the inner circumference of the housing, and an annular groove formed in the circumferential direction on the outer surface of the bushing to correspond to the protrusion.

The above-mentioned separation preventing part is composed of an annular groove formed in the circumferential direction on the inner circumference of the housing, and a ring-shaped protrusion formed in the circumferential direction on the outer surface of the bushing to correspond to the groove.

The bushing provided with a departure prevention structure according to an embodiment of the present invention configured as described above has the following advantages.

To reduce the frictional resistance between the housing of the structure such as boom and arm and the fixing pin, the bushing mounted on the housing is prevented from being dislodged by the structural shape of the bushing even if a load or the like is generated in the bushing during operation. The contact area of the bushing with respect to the housing is increased to increase the friction force, thereby increasing the bushing function.

1 (a, b) is a state of use of the bushing and bushing according to the prior art,
Figure 2 (a, b) is a perspective view of a bushing with a departure prevention structure according to an embodiment of the present invention, a cross-sectional view of the coupling of the housing and the bushing,
Figure 3 (a, b) is a perspective view of a bushing having a separation prevention structure according to another embodiment of the present invention, a cross-sectional view of the coupling of the housing and the bushing,
Figure 4 (a, b) is a perspective view of a bushing having a separation prevention structure according to another embodiment of the present invention, a cross-sectional view of the coupling of the housing and the bushing,
5 is a state diagram used in the bushing with a departure prevention structure according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to explain in detail enough to enable those skilled in the art to easily carry out the invention, and thus the present invention. It is not intended that the technical spirit and scope of the invention be limited.

Bushing with a departure prevention structure according to an embodiment of the present invention shown in Figure 2 (a, b) and 5,

In the bushing to reduce the frictional resistance generated between the housing and the fixing pin integrally welded to the structure when the structure such as the boom, arm, etc. that make up the excavator working device is jointly connected by the fixing pin for joint motion,

An inner circumference of the housing 11 and a bushing (for example, brass, copper alloy, etc.) may be formed in a shape corresponding to each other on the outer surface of the housing 12, and a bushing 12 mounted on the inner circumference of the housing 11. It is provided with the departure prevention part 13 which prevents it from being separated from the housing 11 by the load, the vibration, etc. which generate | occur | produce during this operation | work.

As shown in Figure 2 (a, b), the above-described separation prevention portion 13 is an annular groove 14 formed in the circumferential direction on the inner circumference of the housing 11 and the bushing (corresponding to the groove 14) It consists of a strip-shaped protrusion 15 formed in the circumferential direction on the outer surface of 12).

As shown in FIG. 3 (a, b), the above-described separation preventing portion 13 is a bush-shaped protrusion 16 formed in the circumferential direction on the inner circumference of the housing 11, and bushing corresponding to the protrusion 16 It consists of an annular groove 17 formed in the circumferential direction on the outer surface of (12).

As shown in Figure 4 (a, b), the above-described separation prevention portion 13 is an annular groove 18 formed in the circumferential direction at the inner circumference of the housing 11, and the bushing (corresponding to the groove 18) It consists of a ring-shaped protrusion 19 that protrudes in the circumferential direction on the outer surface of 12).

Hereinafter, an example of the use of the bushing with a departure-avoidance structure according to an embodiment of the present invention will be described with reference to the accompanying drawings.

As shown in Figure 2 (a, b) and 5, when the joint structure 10, such as a boom, arm, etc. of the excavator working device rotatably connected by a fixing pin (not shown), the structure 10 ) Is fixed integrally welded to the inner periphery of the housing 11 having the annular groove 14 formed in the circumferential direction in the circumferential direction, and the band-shaped protrusion 15 of the shape corresponding to the groove 14 is protruded from the outer surface. Fit the bushing (12).

For this reason, due to the mutual concavities and convexities between the recess 14 formed in the inner circumference of the housing 11 and the protrusion 15 formed on the outer surface of the bushing 12, the concavities and convexities during operation of the excavator Even when a load, vibration, or the like is generated in the bushing 12, the bushing 12 can be prevented from being separated from the housing 11.

As shown in Figure 3 (a, b), when jointly connected to the structure 10, such as a boom, arms, and the like to be rotatable by a fixing pin (not shown), the welding is fixed integrally to the structure (10) In the inner circumference of the housing 11 in which the strip-shaped protrusion 16 protrudes in the circumferential direction, an annular groove 17 having a shape corresponding to the protrusion 16 fits the bushing 12 formed on the outer side. .

For this reason, due to mutual uneven coupling between the protrusion 16 formed on the inner circumference of the housing 11 and the groove preventing portion 13 formed of the groove 17 formed on the outer surface of the bushing 12, the excavator is in operation. Even when a load, vibration, or the like is generated in the bushing 12, the bushing 12 can be prevented from being separated from the housing 11.

As shown in Figure 4 (a, b), when jointly connected to the structure 10, such as a boom, arms, and the like rotatable by a fixing pin (not shown), the welding is fixed integrally to the structure (10) The ring-shaped protrusion 19 of the shape corresponding to the groove 18 fits the bushing 12 protruding to the outer side with respect to the housing 11 in which the groove 18 is formed in the circumferential direction annularly on the inner circumference. .

For this reason, due to mutual concavities and convexities between the grooves 18 formed in the inner circumference of the housing 11 and the protrusion prevention portion 13 formed of the protrusions 19 formed on the outer surface of the bushing 12, the excavator is in operation. Even when a load, vibration, or the like is generated in the bushing 12, the bushing 12 can be prevented from being separated from the housing 11.

According to the bushing provided with a separation prevention structure according to an embodiment of the present invention as described above, the bushing mounted to reduce the frictional resistance generated between the housing and the fixing pin of the structure, such as excavator boom, arm, etc. It is possible to prevent the detachment due to the generated load, vibration, etc., and increase the frictional force since the contact area of the bushing with respect to the housing is increased.

10; structure
11; housing
12; bushing
13; Departure prevention part
14,17,18; Groove
15,16,19; projection part

Claims (4)

In the bushing to reduce the frictional resistance generated between the housing and the fixing pin of the structure when the structure is jointed by the fixing pin to enable the joint movement:
It is formed in a shape corresponding to each other on the inner circumference of the housing and the outer surface of the bushing, characterized in that having a departure prevention portion for preventing the bushing mounted on the inner circumference of the housing from being separated from the housing due to the load generated during operation Bushing equipped with a departure-avoidance structure. According to claim 1, wherein the separation prevention portion is formed of an annular groove formed in the circumferential direction on the inner circumference of the housing, and a band-shaped protrusion formed protruding in the circumferential direction on the outer surface of the bushing corresponding to the groove Bushing provided with a separation prevention structure characterized in. According to claim 1, wherein the separation prevention portion is formed of a band-shaped protrusion formed in the circumferential direction on the inner circumference of the housing, and an annular groove formed in the circumferential direction on the outer surface of the bushing to correspond to the protrusion. Bushing equipped with a departure-avoidance structure. According to claim 1, wherein the separation prevention portion is formed of an annular groove formed in the circumferential direction on the inner circumference of the housing, and a ring-shaped protrusion projecting in the circumferential direction on the outer surface of the bushing to correspond to the groove Bushing provided with a separation prevention structure characterized in.
KR1020110111276A 2011-10-28 2011-10-28 Bushing having prevent separation KR20130046731A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110111276A KR20130046731A (en) 2011-10-28 2011-10-28 Bushing having prevent separation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020110111276A KR20130046731A (en) 2011-10-28 2011-10-28 Bushing having prevent separation

Publications (1)

Publication Number Publication Date
KR20130046731A true KR20130046731A (en) 2013-05-08

Family

ID=48658337

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020110111276A KR20130046731A (en) 2011-10-28 2011-10-28 Bushing having prevent separation

Country Status (1)

Country Link
KR (1) KR20130046731A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170138445A (en) * 2015-04-17 2017-12-15 하테부르 움포름마쉬넨 아크티엔게젤샤프트 Ring rolling devices with axially fixed rolling-element bearings
KR20180050794A (en) * 2016-11-07 2018-05-16 주식회사 인팩 Mounting apparatus for vehicle component
WO2022218880A1 (en) * 2021-04-12 2022-10-20 Igus Gmbh Precision sliding bearing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170138445A (en) * 2015-04-17 2017-12-15 하테부르 움포름마쉬넨 아크티엔게젤샤프트 Ring rolling devices with axially fixed rolling-element bearings
US10870144B2 (en) * 2015-04-17 2020-12-22 Hatebur Umformmaschinen Ag Ring rolling device with axially fixed rolling bearings
KR20180050794A (en) * 2016-11-07 2018-05-16 주식회사 인팩 Mounting apparatus for vehicle component
WO2022218880A1 (en) * 2021-04-12 2022-10-20 Igus Gmbh Precision sliding bearing

Similar Documents

Publication Publication Date Title
JP4555096B2 (en) Assembly structure of holding member, shaft and snap ring
JP5826490B2 (en) Fluid coupling and retainer for fluid coupling
KR20130046731A (en) Bushing having prevent separation
JP2012202488A (en) Bearing for crankshaft of internal combustion engine
CN109812509B (en) Coupling and fixing method thereof
US9381596B2 (en) Welding fixture
JP2018517878A (en) Mechanical seal device with drop prevention device
CN107813292B (en) Industrial robot
JP6011997B2 (en) Dust cover for ball joint
KR102125859B1 (en) Fixing Device of Pin
CN107044481B (en) Roller bearing
KR20200000252U (en) Robot arm joint device
JP6567761B2 (en) Buffer stopper
JP2017011061A (en) Noise countermeasure member
KR20120072414A (en) Mounting pin of attachment of construction machine
JP2009287642A (en) Band for fixing boot
JP3539807B2 (en) Flexible connector
CN214836613U (en) Engine oil filter
CN210649140U (en) Connecting device for shell and rocker arm based on integrated X-shaped spot welding machine
CN218953873U (en) Drive shaft moving joint housing assembly, drive shaft moving joint, and vehicle
CN210196436U (en) Sealing ring
CN210484422U (en) Locking mechanism of cross package bearing
JP2018083469A (en) Bracket member
CN105757126A (en) Bearing sealing ring with double steel ring skeletons
JP5368929B2 (en) Centrifugal clutch device

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination