CN111152764A - Supporting disk structure of construction machinery hydraulic support leg - Google Patents
Supporting disk structure of construction machinery hydraulic support leg Download PDFInfo
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- CN111152764A CN111152764A CN202010123077.3A CN202010123077A CN111152764A CN 111152764 A CN111152764 A CN 111152764A CN 202010123077 A CN202010123077 A CN 202010123077A CN 111152764 A CN111152764 A CN 111152764A
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- hydraulic
- oil cylinder
- hydraulic oil
- springs
- supporting plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S9/00—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks
- B60S9/02—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting
- B60S9/10—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting by fluid pressure
- B60S9/12—Ground-engaging vehicle fittings for supporting, lifting, or manoeuvring the vehicle, wholly or in part, e.g. built-in jacks for only lifting or supporting by fluid pressure of telescopic type
Abstract
The invention discloses a supporting disk structure of a hydraulic supporting leg of a construction machine, and belongs to the technical field of construction machines. The hydraulic oil cylinder comprises a hydraulic oil cylinder, wherein a ball hinge is fixed at one end of the cylinder bottom of the hydraulic oil cylinder, and a supporting plate is arranged on the ball hinge in a matching manner; a plurality of uniformly distributed hydraulic springs are connected between the periphery of the supporting plate and the periphery of the bottom of the hydraulic oil cylinder; oil chambers of the hydraulic springs are communicated; when the supporting plate is perpendicular to the axis of the hydraulic oil cylinder, the hydraulic springs and the axis of the hydraulic oil cylinder form an included angle of 5-10 degrees, and the inclination directions of at least one pair of adjacent hydraulic springs are opposite. After the engineering machinery is transferred or in the operation, when the supporting disc angle changes due to the change of the ground or the change of the operation gravity center, a plurality of hydraulic springs can correspondingly extend out or retract, and because the hydraulic spring oil cavities are communicated, the pressure is equal, each hydraulic spring can give the same force to the supporting disc, the stress of the supporting disc is even, the side slip is prevented, and the potential safety hazard during the operation is eliminated.
Description
Technical Field
The invention relates to the technical field of construction machinery, in particular to a supporting plate structure of a hydraulic supporting leg of the construction machinery.
Background
Hydraulic leg cylinders are used in a wide variety of construction machines, such as cranes, semitrailers, etc. The hydraulic support legs mainly play a supporting role and prevent the construction machinery from turning on one side during operation.
For example, a swash plate type hydraulic leg cylinder (CN 204300025U) disclosed in chinese patent comprises a fixed cylinder and a hydraulic lock, wherein a movable cylinder and a piston rod are arranged in the fixed cylinder, the movable cylinder is located between the fixed cylinder and the piston rod, the movable cylinder and the piston rod enclose a cylinder, the piston is connected to the piston rod, and the cylinder is divided into two working oil chambers; the lower end of the movable cylinder barrel is connected with a spherical hinge, the spherical hinge is installed in the supporting disc and can freely rotate in the supporting disc, the fixed cylinder barrel is fixedly connected with the piston rod, and the hydraulic lock is located at the top end of the piston rod.
As described in the above-mentioned technology, in order to improve the stability of the hydraulic leg, the lower end of the hydraulic leg is usually installed with a support plate using a ball hinge, the support plate can rotate first, so as to make good contact with the ground, and the second can increase the force-bearing area. In actual conditions it was found that: although the bearing area of the supporting disc is increased and the supporting disc can rotate, due to the change of the work gravity center during operation, the stress at each position of the supporting disc is not uniform, the supporting disc is easy to sideslip, and particularly when the work gravity center is frequently changed, the supporting disc has great potential safety hazard.
Disclosure of Invention
In order to solve the technical problem, the invention provides a supporting plate structure of a hydraulic supporting leg of a construction machine.
The invention is realized by the following technical scheme: a supporting plate structure of a hydraulic supporting leg of construction machinery comprises a hydraulic oil cylinder, wherein a ball hinge is fixed at one end of the bottom of the hydraulic oil cylinder, and a supporting plate is arranged on the ball hinge in a matched manner; a plurality of uniformly distributed hydraulic springs are connected between the periphery of the supporting plate and the periphery of the bottom of the hydraulic oil cylinder; oil chambers of the hydraulic springs are communicated; when the supporting plate is perpendicular to the axis of the hydraulic oil cylinder, the hydraulic springs and the axis of the hydraulic oil cylinder form an included angle of 5-10 degrees, and the inclination directions of at least one pair of adjacent hydraulic springs are opposite.
It further comprises the following steps: when the supporting plate is perpendicular to the axis of the hydraulic oil cylinder, the hydraulic spring and the axis of the hydraulic oil cylinder form an included angle of 8 degrees.
The hydraulic springs are four in total, and the inclination directions of the adjacent hydraulic springs are opposite.
The hydraulic spring is a plunger type cylinder, and oil cavities of the plunger type cylinder are communicated with each other.
The upper end and the lower end of the hydraulic spring are hinged with the cylinder bottom of the hydraulic oil cylinder and the supporting plate.
The upper end and the lower end of the hydraulic spring are connected with the cylinder bottom of the hydraulic oil cylinder and the supporting plate through ball hinges.
A supporting plate structure of a hydraulic supporting leg of construction machinery comprises a hydraulic oil cylinder, wherein a ball hinge is fixed at the end part of a piston rod of the hydraulic oil cylinder, and a supporting plate is arranged on the ball hinge in a matching way; a plurality of uniformly distributed hydraulic springs are connected between the periphery of the supporting plate and the periphery of the end part of the piston rod of the hydraulic oil cylinder; oil chambers of the hydraulic springs are communicated; when the supporting plate is perpendicular to the axis of the hydraulic oil cylinder, the hydraulic springs and the axis of the hydraulic oil cylinder form an included angle of 5-10 degrees, and the inclination directions of at least one pair of adjacent hydraulic springs are opposite.
Compared with the prior art, the invention has the beneficial effects that: after the engineering machinery is transferred or in the operation, when the supporting disc angle changes due to the change of the ground or the change of the operation gravity center, a plurality of hydraulic springs can correspondingly extend out or retract, and because the hydraulic spring oil cavities are communicated, the pressure is equal, each hydraulic spring can give the same force to the supporting disc, the stress of the supporting disc is even, the side slip is prevented, and the potential safety hazard during the operation is eliminated.
Drawings
FIG. 1 is a schematic structural diagram (in plan view) of a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram (during operation on an inclined plane) of the first embodiment of the present invention;
in the figure: 1. a hydraulic cylinder; 2. ball-twisting; 3. a support disc; 4. a hydraulic spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1 and 2, the supporting plate structure of the hydraulic support leg of the construction machine comprises a hydraulic oil cylinder 1, wherein a ball hinge 2 is fixed at one end of the cylinder bottom of the hydraulic oil cylinder 1, and a supporting plate 3 is arranged on the ball hinge 2 in a matching manner.
Be connected with the hydraulic spring 4 of 4 equipartitions between 3 peripheries of supporting disk and the 1 bottom of cylinder of hydraulic cylinder periphery, hydraulic spring 4 is the plunger case in this embodiment, and the oil pocket of each plunger case communicates each other. The upper end and the lower end of the hydraulic spring 4 are connected with the cylinder bottom of the hydraulic oil cylinder 1 and the supporting disc 3 by adopting a ball hinge.
When the supporting plate 3 is vertical to the axis of the hydraulic oil cylinder 1 (as shown in figure 1), the hydraulic springs 4 have an included angle of 5-10 degrees with the axis of the hydraulic oil cylinder 1, and the inclination directions of the adjacent hydraulic springs 4 are opposite. In the embodiment, the included angle between the hydraulic spring 4 and the axis of the hydraulic oil cylinder 1 is preferably 8 degrees.
The working principle is as follows:
after the engineering machinery is transferred or in the operation, when the supporting disc angle changes due to the change of the ground or the change of the operation gravity center, a plurality of hydraulic springs can correspondingly extend out or retract, and because the hydraulic spring oil cavities are communicated, the pressure is equal, each hydraulic spring can give the same force to the supporting disc, the stress of the supporting disc is even, the side slip is prevented, and the potential safety hazard during the operation is eliminated.
Example two
The difference between the second embodiment and the first embodiment is:
the ball hinge 2 is fixed at the end part of the piston rod of the hydraulic oil cylinder 1, and 4 evenly distributed hydraulic springs 4 are connected between the periphery of the support plate 3 and the periphery of the end part of the piston rod of the hydraulic oil cylinder 1.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (7)
1. A supporting plate structure of a hydraulic supporting leg of construction machinery comprises a hydraulic oil cylinder (1), wherein a ball hinge (2) is fixed at one end of the cylinder bottom of the hydraulic oil cylinder (1), and a supporting plate (3) is installed on the ball hinge (2) in a matching manner; the method is characterized in that: a plurality of uniformly distributed hydraulic springs (4) are connected between the periphery of the supporting plate (3) and the periphery of the bottom of the hydraulic oil cylinder (1); oil cavities of a plurality of hydraulic springs (4) are communicated; when the supporting plate (3) is vertical to the axis of the hydraulic oil cylinder (1), the hydraulic springs (4) and the axis of the hydraulic oil cylinder (1) form an included angle of 5-10 degrees, and the inclination directions of at least one pair of adjacent hydraulic springs (4) are opposite.
2. The support plate structure of the construction machine hydraulic leg according to claim 1, characterized in that: when the supporting plate (3) is perpendicular to the axis of the hydraulic oil cylinder (1), the hydraulic spring (4) and the axis of the hydraulic oil cylinder (1) form an included angle of 8 degrees.
3. The support plate structure of the construction machine hydraulic leg according to claim 1, characterized in that: the hydraulic springs (4) are four in total, and the inclination directions of the adjacent hydraulic springs (4) are opposite.
4. The support plate structure of the construction machine hydraulic leg according to claim 1, characterized in that: the hydraulic spring (4) is a plunger type cylinder, and oil cavities of the plunger type cylinder are communicated with each other.
5. The support plate structure of the construction machine hydraulic leg according to claim 1, characterized in that: the upper end and the lower end of the hydraulic spring (4) are hinged with the cylinder bottom of the hydraulic oil cylinder (1) and the supporting plate (3).
6. The support plate structure of the construction machine hydraulic leg according to claim 5, characterized in that: the upper end and the lower end of the hydraulic spring (4) are connected with the cylinder bottom of the hydraulic oil cylinder (1) and the supporting plate (3) through ball hinges.
7. A supporting plate structure of a hydraulic supporting leg of construction machinery comprises a hydraulic oil cylinder (1), wherein a ball hinge (2) is fixed at the end part of a piston rod of the hydraulic oil cylinder (1), and a supporting plate (3) is installed on the ball hinge (2) in a matching manner; the method is characterized in that: a plurality of uniformly distributed hydraulic springs (4) are connected between the periphery of the supporting plate (3) and the periphery of the end part of the piston rod of the hydraulic oil cylinder (1); oil cavities of a plurality of hydraulic springs (4) are communicated; when the supporting plate (3) is vertical to the axis of the hydraulic oil cylinder (1), the hydraulic springs (4) and the axis of the hydraulic oil cylinder (1) form an included angle of 5-10 degrees, and the inclination directions of at least one pair of adjacent hydraulic springs (4) are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010123077.3A CN111152764A (en) | 2020-02-27 | 2020-02-27 | Supporting disk structure of construction machinery hydraulic support leg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010123077.3A CN111152764A (en) | 2020-02-27 | 2020-02-27 | Supporting disk structure of construction machinery hydraulic support leg |
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| Publication Number | Publication Date |
|---|---|
| CN111152764A true CN111152764A (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010123077.3A Pending CN111152764A (en) | 2020-02-27 | 2020-02-27 | Supporting disk structure of construction machinery hydraulic support leg |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07224424A (en) * | 1994-02-15 | 1995-08-22 | Hitachi Constr Mach Co Ltd | Jack cylinder device of pile striking machine |
| CN202007805U (en) * | 2011-03-04 | 2011-10-12 | 泸州金辉液压件有限责任公司 | Bottom-to-top outrigger oil cylinder of long twist drill |
| CN202965811U (en) * | 2012-12-05 | 2013-06-05 | 嘉兴顺联橡塑机械有限公司 | Universal flexible connecting device |
| JP2014095620A (en) * | 2012-11-09 | 2014-05-22 | Kayaba System Machinery Co Ltd | Oscillation testing device |
| CN204297986U (en) * | 2014-12-05 | 2015-04-29 | 长沙中联消防机械有限公司 | Movable supporting legs supporting construction and engineering truck |
| CN106762940A (en) * | 2016-12-08 | 2017-05-31 | 泸州长江液压密封件有限公司 | A kind of hydraulic cylinder of fast and easy connection |
| CN106884668A (en) * | 2017-03-14 | 2017-06-23 | 苏州蓝王机床工具科技有限公司 | A kind of structure of hydraulic pressure breaking-off timber |
-
2020
- 2020-02-27 CN CN202010123077.3A patent/CN111152764A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07224424A (en) * | 1994-02-15 | 1995-08-22 | Hitachi Constr Mach Co Ltd | Jack cylinder device of pile striking machine |
| CN202007805U (en) * | 2011-03-04 | 2011-10-12 | 泸州金辉液压件有限责任公司 | Bottom-to-top outrigger oil cylinder of long twist drill |
| JP2014095620A (en) * | 2012-11-09 | 2014-05-22 | Kayaba System Machinery Co Ltd | Oscillation testing device |
| CN202965811U (en) * | 2012-12-05 | 2013-06-05 | 嘉兴顺联橡塑机械有限公司 | Universal flexible connecting device |
| CN204297986U (en) * | 2014-12-05 | 2015-04-29 | 长沙中联消防机械有限公司 | Movable supporting legs supporting construction and engineering truck |
| CN106762940A (en) * | 2016-12-08 | 2017-05-31 | 泸州长江液压密封件有限公司 | A kind of hydraulic cylinder of fast and easy connection |
| CN106884668A (en) * | 2017-03-14 | 2017-06-23 | 苏州蓝王机床工具科技有限公司 | A kind of structure of hydraulic pressure breaking-off timber |
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Application publication date: 20200515 |
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