KR20160035126A - Supporting structure between outrigger and turning base - Google Patents

Supporting structure between outrigger and turning base Download PDF

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Publication number
KR20160035126A
KR20160035126A KR1020140125707A KR20140125707A KR20160035126A KR 20160035126 A KR20160035126 A KR 20160035126A KR 1020140125707 A KR1020140125707 A KR 1020140125707A KR 20140125707 A KR20140125707 A KR 20140125707A KR 20160035126 A KR20160035126 A KR 20160035126A
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KR
South Korea
Prior art keywords
outrigger
turning base
shaft
roller
support structure
Prior art date
Application number
KR1020140125707A
Other languages
Korean (ko)
Inventor
윤영곤
Original Assignee
(주)케이씨이피중공업
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 (주)케이씨이피중공업 filed Critical (주)케이씨이피중공업
Priority to KR1020140125707A priority Critical patent/KR20160035126A/en
Publication of KR20160035126A publication Critical patent/KR20160035126A/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/78—Supports, e.g. outriggers, for mobile cranes

Abstract

It is an object of the present invention to provide a support structure for an outrigger and a turning base capable of sufficiently dispersing a reaction force in an assembling portion of a first outrigger and a turning base in a three-stage or more large outrigger.
A support structure for an outrigger and a turning base includes a shaft fixed to the outrigger and a roller rotatably fixed to the shaft and supporting the turning base. Thereby providing a support structure.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support structure for an outrigger and a turning base,

The present invention relates to a support structure for an outrigger and a turning base.

The outrigger is a type of crane stabilizer that horizontally protrudes the beam from the truck and supports it with a jack equipped at its end. It is mainly used for truck cranes. Push the two beams horizontally by the hydraulic cylinder and push the jacks of the beam end at the hydraulic cylinder as well. The load of the crane body is received at 4 points of the jack. Outrigger] (Civil terminology dictionary, 1997.2.1, book publishing inquiry circle))

FIG. 1 is a view schematically showing a conventional two-stage outrigger. A turning base 10 is installed on the carriage A and a first outrigger 21 is coupled to the turning base 10 and a second outrigger 22 is coupled to the first outrigger 21 .

Fig. 2 is a cross-sectional view of Fig. 1 taken in the direction of P; Fig. When the outrigger is used, the first and second outriggers 21 and 22 are extended and the jack 30 provided at the end of the second outrigger 22 is extended to reach the ground, So that the end of the trigger 22 is supported. The first and second outriggers 21 and 22 are deflected by their own weights until the jack 30 supports the end of the second outrigger 22, Which causes friction between the first outrigger 21 and the turning base 10, which adversely affects the operation of the outrigger.

3 and 4 are views showing a conventional friction reducing structure of an outrigger and a turning base. Conventionally, the friction reducing structure of the outrigger and the turning base includes the T-shaped roller 40. The T-shaped roller 40 includes a lower bolt 41 extending downward and an arm 42 positioned at the upper end of the lower bolt 41 and extending to both ends of the lower bolt 41. Rollers 43 are installed on both sides of the arm 42 have. A horizontal projection 44 for fixing the T-shaped roller 40 to the first outrigger 21 extends further to the outside than the roller 43.

The first outrigger 21 is a box-like beam and has upper and lower plates contacting both upper and lower ends of both side walls 21a and both side walls. And also has a supporting surface 21c between both side walls 21a of the front end which engages with the turning base 10 (see Figs. 1 and 2) for the installation of the T-shaped roller 40. Fig. An insertion groove 21b is formed on both side walls 21a so that the horizontal projection 44 of the T-shaped roller 40 can be inserted. An insertion hole 21b is formed in the support surface 21c, (21d) are formed. A height adjusting nut 45 may be coupled to the lower bolt 41, thereby adjusting the installation height of the T-shaped roller 40.

3 and 4, the insertion grooves 21b formed in the both side walls 21a of the first outrigger 21 are formed in such a manner that the horizontal protrusions 44 are completely fixed The T-shaped roller 40 can be tilted right and left. This tilting function is a function for correcting the unevenness of the passageway through which the outrigger is assembled and the flatness of the outrigger after the outrigger due to the nature of the welded structure.

However, when the T-type roller is used in a three-stage or larger outrigger, the weight of the outrigger is increased, and the reaction force is increased, so that the reaction force in the display section Z is increased.

5 is a view showing an example of a problem that occurs when a T-shaped roller is used as a friction reducing structure of an outrigger and a turning base. There is a problem that the T-shaped roller 40 is excessively tilted due to an increased reaction force, so that the corner of the first outrigger 21 interferes with the inner surface of the turning base 22 and normal operation becomes difficult.

6 is a view showing another example of a problem that occurs when a T-shaped roller is used as a friction reducing structure of an outrigger and a turning base. Also, due to the increased reaction force, the T-shaped roller 40 causes the upper plate of the turning base 10 to bend. In this case, too, there arises a problem that the edges of the turning base 10 and the first outrigger 21 interfere with each other and the finishing operation can not be performed.

It is an object of the present invention to provide a support structure for an outrigger and a turning base capable of sufficiently dispersing a reaction force in an assembling portion of a first outrigger and a turning base in a three-stage or more large outrigger.

The invention relates to a support structure for an outrigger and a turning base comprising a shaft fixed to the outrigger and a roller rotatably fixed to the shaft and supporting the turning base, Thereby providing a support structure.

In another embodiment of the present invention, the shaft portion is fixed to the outrigger by a bolt, extends to both side walls of the outrigger, and the roller is installed at both ends of the shaft portion. Lt; / RTI >

According to another aspect of the present invention, there is provided a support structure for an outrigger and a turning base, wherein at least two shafts are provided, the shafts are fixed to the outrigger by bolts, and the rollers are provided at one shaft. do.

According to another aspect of the present invention, there is provided an support structure for an outrigger and a turning base, further comprising an L-shaped reinforcing plate interposed between the outrigger and the shaft for reinforcing the strength of the outrigger.

According to another aspect of the present invention, there is provided a support structure for an outrigger and a turning base, wherein both ends of the shaft are fixed to both side walls of the outrigger and the rollers extend to both side walls of the outrigger.

The outrigger may interfere with or interfere with the passage of the turning base due to the large amount of vertical displacement of the roller having the conventional tilting function. However, the support structure of the outrigger and the turning base provided by the present invention completely fixes the shaft to the outrigger, Tilting of the rollers is not allowed, and only the rotation of the rollers is allowed, so that the gap between the turning base and the outrigger can be kept constant and the friction can be remarkably reduced.

Also, the support structure of the outrigger and the turning base provided by the present invention can maximize the contact area between the roller and the turning base, thereby minimizing the deformation of the turning base.

Figure 1 schematically illustrates a conventional two-stage outrigger,
FIG. 2 is a cross-sectional view of FIG. 1 taken along the line P,
3 and 4 are views showing a support structure of a conventional outrigger and a turning base,
5 is a view showing an example of a problem that occurs when a T-shaped roller is used as a support structure of an outrigger and a turning base,
6 is a view showing another example of a problem that occurs when the T-shaped roller is used as the support structure of the outrigger and the turning base,
7 and 8 are views showing an example of a three-stage outrigger,
9 and 10 are views showing a support structure of an outrigger and a turning base according to a first embodiment of the present invention,
11 is a perspective view of a support structure of an outrigger and a turning base according to a second embodiment of the present invention,
12 illustrates a support structure of an outrigger and a turning base according to a third embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

7 and 8 are views showing an example of a three-stage outrigger.

The turning base 100 is installed on the carriage A and the first outrigger 210 is coupled to the turning base 100. The second outrigger 220 is coupled to the first outrigger 210, The third outrigger 230 is coupled to the second outrigger 220.

Fig. 7 is a cross-sectional view of Fig. 8 viewed from the PP direction. When the outrigger is used, the first, second and third outriggers 210, 220 and 230 are extended and the jack 300 provided at the end of the third outrigger 230 is extended to reach the ground. So that the end of the third outrigger 230 is supported. The first, second, and third outriggers 210, 220, and 230 are extended in the extended state until the outrigger is extended and the end of the third outrigger 230 is supported by the jack 300 Since the first, second, and third outriggers 210, 220, and 230 are floating in the air, deflection occurs due to their own weight, and a reaction force commonly used in the portion indicated by ZZ is generated, 210 and the turning base 100 and warping of the turning base 100 and the like, thereby adversely affecting the operation of the outrigger. A support structure is required between the first outrigger 210 and the turning base 100 to eliminate such adverse effects.

9 and 10 are views showing the support structure of the outrigger and the turning base according to the first embodiment of the present invention.

In order to reduce the friction between the first outrigger 210 and the turning base 100 and to prevent the turning base 100 from bending and interference with the first outrigger 210 when the outrigger is extended, The first outrigger 210 is provided with a support roller 400. The support roller 400 includes a shaft 410 and a bolt 412 for fixing the shaft 410 to the first outrigger 210 and a roller 420 rotatably coupled to the shaft 410.

In order to reinforce the support strength of the first outrigger 210, an L-shaped reinforcing plate 214 may be interposed between the first outrigger 210 and the shaft portion 410. The shaft 410 can be easily fixed to the first outrigger 210 or the L-shaped reinforcing plate 214 by making the cross section of the portion except the portion where the roller 420 is installed a rectangle rather than a circle. Here, the term " a square section " means that each corner of the square is chamfered or rounded. It is preferable that the roller 420 is installed at the both ends of the shaft portion 410 at both sides so as to be as close as possible to the side wall of the first outrigger 210 so that the turning base 100 is minimally bent by the reaction force. It is also desirable to minimize deformation of the turning base 100 by increasing the axial length of the roller relative to the conventional roller 44 (see FIG. 4) and increasing the contact area between the roller 420 and the turning base 100 Do.

11 is a view showing a support structure of an outrigger and a turning base according to a second embodiment of the present invention.

The support structure of the outrigger and the turning base according to the second embodiment of the present invention is also provided with a support roller 400 '. The support roller 400 'includes a bolt 412' for fixing the shaft 410 'and the shaft 410' to the first outrigger 210, a roller 420 (not shown) rotatably coupled on the shaft 410 ' '). At this time, at least two of the shaft portions 410 'are divided, and one roller 420' is provided at both ends of the divided shaft portions 410 '. That is, a pair of rollers 420 'are provided on one shaft portion 410'. 11 illustrates a supporting structure in which two shaft portions 410 'and two roller pairs 420' are provided. However, three or more shaft portions 410 'may be provided, and the roller 420' ') May also be provided.

The supporting structure according to the second embodiment of the present invention is also characterized in that the L-shaped reinforcing plate 214 is interposed between the shaft portion 410 'and the first outrigger 210 so that the supporting strength of the first outrigger 210 Can be reinforced.

12 is a view showing a support structure of an outrigger and a turning base according to a third embodiment of the present invention.

The supporting roller 400 '' is also provided with a supporting structure of the outrigger and the turning base according to the third embodiment of the present invention. The supporting roller 400 '' has a shaft 410 Quot;) and a roller 420 "which is rotatably mounted on the shaft portion 410 " and extends to the inner surface of both sidewalls of the first outrigger.

The support structure of the outrigger and the turning base according to the third embodiment of the present invention can maximize the size of the roller 420 "so that the contact area between the roller 420" and the turning base 100 can be maximized So that the deformation of the turning base 100 can be minimized.

100: Turning base 210: 1st outrigger
212: Support surface 214: L-shaped reinforcing plate
300: Jack 400, 400 ', 400 ": Support roller
410, 410 ', 410 ": Shaft 412, 412': Bolt
420, 420 ', 420 ": rollers

Claims (5)

In the support structure of the outrigger and the turning base,
A stem fixed to the outrigger in a non-movable manner; And
And a roller rotatably fixed to the shaft and supporting the turning base. The method according to claim 1,
The shaft is fixed to the outrigger by bolts and extends to both side walls of the outrigger,
And the rollers are installed at both ends of the shaft portion, respectively. The method according to claim 1,
At least two shaft portions are provided and fixed to the outrigger by bolts,
And a pair of rollers are provided on one shaft portion. 4. The method according to any one of claims 2 and 3,
And an L-shaped reinforcement plate interposed between the outrigger and the shaft to reinforce the strength of the outrigger. The method according to claim 1,
Both ends of the shaft are fixed to both side walls of the outrigger,
Wherein the rollers extend to both side walls of the outrigger.
KR1020140125707A 2014-09-22 2014-09-22 Supporting structure between outrigger and turning base KR20160035126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020140125707A KR20160035126A (en) 2014-09-22 2014-09-22 Supporting structure between outrigger and turning base

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140125707A KR20160035126A (en) 2014-09-22 2014-09-22 Supporting structure between outrigger and turning base

Publications (1)

Publication Number Publication Date
KR20160035126A true KR20160035126A (en) 2016-03-31

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KR1020140125707A KR20160035126A (en) 2014-09-22 2014-09-22 Supporting structure between outrigger and turning base

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KR (1) KR20160035126A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101875160B1 (en) * 2016-12-23 2018-07-06 주식회사 에버다임 a Roller for out-trigger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101875160B1 (en) * 2016-12-23 2018-07-06 주식회사 에버다임 a Roller for out-trigger

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