CN202657873U - Supporting leg device and crane with same - Google Patents
Supporting leg device and crane with same Download PDFInfo
- Publication number
- CN202657873U CN202657873U CN 201220246977 CN201220246977U CN202657873U CN 202657873 U CN202657873 U CN 202657873U CN 201220246977 CN201220246977 CN 201220246977 CN 201220246977 U CN201220246977 U CN 201220246977U CN 202657873 U CN202657873 U CN 202657873U
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- cover body
- leg
- leg device
- vertical cylinders
- supporting leg
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Abstract
The utility model discloses a supporting leg device for a crane; the supporting leg device comprises a vertical oil cylinder (1) with a supporting leg plate (4) being connected on the lower end; a cover body (3) is sleeved on the wall of the vertical oil cylinder (1); the cover body (3) is fastened on the wall of the vertical oil cylinder (1) through a fastener; the main body part (31) of the cover body (3) covers the outer side of the supporting leg plate (4); when the crane runs, foreign bodies such as soil lifted by the wheels of the crane are blocked outside the cover body (3), so that the foreign bodies do not enter a joint between the vertical oil cylinder (1) and the supporting leg plate (4); and the foreign bodies such as soil are the main causes for the effect losing of lubricating grease at the joint and the acceleration of the wear at the joint. According to the supporting leg device, the service life of the vertical oil cylinder (1) and the supporting leg plate (4) and the cleaning cycle of the supporting leg plate (4) are significantly prolonged, so that the use efficiency of the crane is improved.
Description
Technical field
The utility model relates to the high-altitude technical field of engineering machinery, particularly a kind of leg device for hoisting crane.In addition, the utility model also relates to a kind of hoisting crane that comprises above-mentioned leg device.
Background technology
Generally all be provided with Vertical Cylinders on hoisting crane, this Vertical Cylinders mainly can shrink the movable supporting legs of captiveing joint with it by the effect of hydraulic pressure back and forth, carries out operation to support heavy-duty machine; Lower end at Vertical Cylinders is connected with force mechanism, and this force mechanism is generally leg disc, and when crane job, leg disc can be delivered to ground with vertical support power.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of Vertical Cylinders and leg disc in the prior art, and Fig. 2 is the installation site schematic diagram of Vertical Cylinders and leg disc.
Has the ball-and-socket that is formed by bolted by two semi-round glands 4 of cardinal principle on the base of leg disc 2, this ball-and-socket supports the bulb 3 of Vertical Cylinders 1 lower end, bulb 3 is bearing surface with the face of joint of ball-and-socket, the curved surface of ball-and-socket has the curvature identical with bulb 3, and the ball-and-socket size is more slightly larger than bulb 3, and bulb 3 can freely rotate in ball-and-socket like this; Also be provided with lubricating cup on leg disc 2, lubricating cup can add grease between two face of joints, in order to reduce the wearing and tearing between two face of joints.
Generally speaking; in order better to support heavy-duty machine; the rigging position of Vertical Cylinders 1 and leg disc 2 and the distance of tire are relatively near, and the joint of Vertical Cylinders 1 and leg disc 2 without any safety method, each parts and joint are directly exposed in the external environment.
When crane running, the earth that tire 5 is kicked up, the foreign matters such as rubble especially easily enter the bulb of Vertical Cylinders 1 lower end and the joint of leg disc 2, some foreign matter can be doped in the lubricating grease, and cause lubricating grease to lose efficacy, can strengthen on the one hand the wearing and tearing between bulb 3 and the ball-and-socket, and then cause the corrosion of bulb 3 and leg disc 2, on the other hand when crane job, there is huge application force between two face of joints, foreign matter very likely can be pressed in bulb 3 or the ball-and-socket under the effect of external force, directly destroy two spheres, the service life of reducing bulb 3 and leg disc 2; In addition, owing to having the gap, many places at leg disc 2, the assembly clearance between two glands for example, as easy as rolling off a log Tibetan mud affects normal operation in assembly clearance, therefore needs regularly leg disc 2 to be cleaned, but the structure of leg disc 2 is comparatively complicated, the difficulty of dismounting is relatively large, needs to drop into larger manpower, and this has reduced the service efficiency of hoisting crane to a certain extent.
Therefore; how actv. is protected the joint of Vertical Cylinders and leg disc; avoid foreign matter to enter joint and destroy lubricating grease, reduce the wearing and tearing between bulb and the ball-and-socket, be those skilled in the art's technical issues that need to address the service life of improving Vertical Cylinders and leg disc.
The utility model content
The purpose of this utility model provides a kind of leg device for hoisting crane, and the foreign matter of kicking up when this leg device can failure-free prevents tyre in operation enters the assembly clearance place of joint and the leg disc of Vertical Cylinders and leg disc.Another purpose of the present utility model provides a kind of hoisting crane that comprises above-mentioned leg device.
To achieve these goals, the utility model provides a kind of leg device, comprise Vertical Cylinders and leg disc, described Vertical Cylinders is connected with described leg disc by the bulb of its lower end, this leg device also comprises cover body and fastener, described cover body is sleeved on the casing wall of described Vertical Cylinders, and the main part of described cover body covers on the outside of described leg disc; Described fastener is fastened on described cover body on the casing wall of Vertical Cylinders.
Preferably, described fastener is the larynx hoop.
Preferably, described larynx hoop is corrosion-resistant steel larynx hoop.
Preferably, described main part be shaped as bowl-shape.
Preferably, the inboard of the bottom of described main part is provided with annular projection.
Preferably, it is characterized in that, described cover body is the rubber cover body.
The utility model also provides a kind of hoisting crane, and this hoisting crane comprises the described leg device of above-mentioned any one.
Preferably, described hoisting crane is wheel crane.
Leg device provided by the utility model, its cover body is fastened on the casing wall of Vertical Cylinders by fastener, the main part of described cover body covers on the outside of leg disc, just to be positioned at described cover body fully inner for the joint of Vertical Cylinders and leg disc like this, and the casing wall of the described Vertical Cylinders overwhelming majority that tightens the lower end casing wall at described cover body place and described leg disc also covers on the inside of described cover body simultaneously; When crane running, it is outside that the foreign matters such as the most earth that tire is kicked up, rubble are blocked on described cover body, greatly reduced the joint that enters Vertical Cylinders and leg disc and the foreign matters such as dust of the gap location on the leg disc, and these foreign matters to be the lubricating greases that cause joint lost efficacy, accelerate the major cause of wearing and tearing between bulb and the ball-and-socket.Therefore; leg device actv. provided by the utility model has been protected the lubricating grease of the joint of Vertical Cylinders and leg disc; the wearing and tearing between bulb and the ball-and-socket have been reduced; prolonged the service life of Vertical Cylinders and leg disc; reduced simultaneously the dust at assemblage gap place on the leg disc; prolong the Cleaning period of leg disc, improved the service efficiency of hoisting crane.
When the leg device fitting process, at first Vertical Cylinders is assembled on the hoisting crane, again cover body is sleeved on the correct position place of the casing wall of described Vertical Cylinders, utilize simultaneously fastener that described cover body is fastened on the casing wall, to guarantee can from slippage on the casing wall of described Vertical Cylinders, not utilize at last gauge member leg disc to be assemblied on the bulb of described Vertical Cylinders at cover body described in the operation process; This shows, whole fitting process does not change the assemble flow of original Vertical Cylinders and leg disc, and assembles simple and convenient.
Description of drawings
Fig. 1 is the structural representation of Vertical Cylinders and leg disc in the prior art;
Fig. 2 is the installation site schematic diagram of Vertical Cylinders and leg disc among Fig. 1;
Fig. 3 is the cross-sectional schematic of a kind of specific embodiment of cover body of leg device provided by the utility model;
Fig. 4 is that the installation site of a kind of specific embodiment of leg device provided by the utility model concerns schematic diagram;
Fig. 5 is the in running order structural representation of the leg device shown in Fig. 4;
Fig. 6 is the birds-eye view when being subject to diametral load in a kind of specific embodiment of the cover body of leg device provided by the utility model;
Fig. 7 is the front elevation of the cover body of the leg device shown in Fig. 6 when being subject to diametral load.
The specific embodiment
Core of the present utility model provides a kind of leg device, this leg device can actv. the lubricating grease of protection Vertical Cylinders and the joint of leg disc, prolong service life of Vertical Cylinders and leg disc, the service efficiency of raising hoisting crane.Another core of the present utility model provides a kind of hoisting crane that comprises above-mentioned leg device.
In order to make those skilled in the art person understand better the utility model scheme, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 3 and Fig. 4, Fig. 3 is the cross-sectional schematic of a kind of specific embodiment of cover body of leg device provided by the utility model, and Fig. 4 is that the installation site of a kind of specific embodiment of leg device provided by the utility model concerns schematic diagram.
In a kind of specific embodiment, leg device provided by the utility model comprises Vertical Cylinders 1, this Vertical Cylinders 1 is connected with leg disc 4 by the bulb 11 that its lower end arranges, for the convenient bulb 11 that supports, on leg disc 4, further be provided with the ball-and-socket that is formed by bolted by two platens 41, bulb 11 is installed in the ball-and-socket, the curved surface of ball-and-socket can have the curvature identical with bulb 11, joint at bulb 11 and ball-and-socket is injected with lubricating grease, to reduce the wearing and tearing between two face of joints; Leg disc 4 moves up and down by the free-extension of Vertical Cylinders 1 upper piston, can also rotate in certain angle around bulb 11 simultaneously.
Casing wall at Vertical Cylinders 1 is set with cover body 1, and for convenient suit, the upper end of cover body 1 can be for cylindric, and its internal diameter can be more slightly larger than the cylinder diameter of Vertical Cylinders 1; The main part 31 of cover body 1 covers on the outside of leg disc 4, so that the ball-and-socket of leg disc 4 is positioned at cover body 3 inside fully at least, like this, Vertical Cylinders 1 just covers on cover body 3 inside fully with the joint of leg disc 4; In order can be further the assembly clearance of two fastening formation of gland on the leg disc 4 to be covered fully, the size of the main part 31 of cover body 3 can be large as far as possible, but the end of its cover body 3 had better not exceed the chassis of leg disc 4, in order to avoid affect the normal support of leg disc 4.
The main part 31 of cover body 3 can have various shape, and wherein a kind of succinct, actv. is shaped as bowl-shapely, and specifically, the cross-sectional plane of main part 31 is rounded, and the diameter of cross-sectional plane is gradually increase along with the increase of the distance of the upper surface of this cross-sectional plane and cover body 3.
The concrete form of fastener can have multiple, and wherein a kind of actv. concrete form can be larynx hoop 2, as shown in Figure 4, the diameter of this larynx hoop 2 can free adjustment, and control process is convenient and simple, is conducive to simplify dismounting and the maintenance of leg device, and helps to expand the range of use of cover body 3.
In order to prevent the corrosion of larynx hoop 2, can further adopt corrosion-resistant steel larynx hoop.
When crane running, the foreign matters such as most of earth that tire is kicked up are blocked on the outside of cover body 3, the joint that actv. has avoided foreign matter to enter Vertical Cylinders 1 and leg disc 4 destroys lubricating grease, improved the service life of Vertical Cylinders 1 and leg disc 4, can also reduce simultaneously the foreign material such as dust at the assemblage gap place on the leg disc 4, prolong the Cleaning period of leg disc 4, improved the service efficiency of hoisting crane.
In the fitting process of leg device, as shown in Figure 5, at first Vertical Cylinders 1 is assembled on the hoisting crane, again cover body 3 is sleeved on the correct position place on the casing wall of Vertical Cylinders 1, this position can guarantee that the end at leg device assembling end rear cover body 3 can not exceed the base of leg disc 4, the recycling fastener is fastened on cover body 3 on the casing wall of Vertical Cylinders 1, utilizes at last gauge member from the lower end of cover body 3 leg disc 4 to be assembled on the bulb of Vertical Cylinders 1.Equally, when leg disc 4 being carried out clean and maintenance or changing the lubricating grease of joint, first leg disc 4 is disassembled from bulb 11 and can clean or change lubricating grease, again fastener is removed, and then cover body 3 can be taken off from casing wall, can safeguard or change fastener or cover body 3.
As seen; leg device provided by the utility model is not only relatively easy in simple in structure, the maintenance; the Assembly And Disassembly process is simpler; and the installation that structure or the installation site adjustment of Vertical Cylinders 1 is not adapted to cover body 3 in the fitting process; do not change Vertical Cylinders 1 and the position relationship of leg disc 4 and the assemble flow of leg disc 4 yet; simultaneously; after assembling finishes; under the effect of fastener; be connected comparatively firm between cover body 3 and the casing wall; be difficult for slippage, make cover body 3 can failure-free the lubricating grease of protection joint.
For prevent install and the crane job process in the damage of 3 pairs of Vertical Cylinders 1 of cover body and leg disc 4, can adopt quality of rubber materials processing cover body 3, adding the mould that can also adopt special use man-hour, cover body 3 has higher elasticity like this, under the effect of external force, allow larger elastic deformation, and after external force is removed, can restore to the original state by fast speed, help to improve the work efficiency of this leg device.
It is pointed out that and can also adopt other materials processing cover body 3, such as flexible plastic etc., as long as work material has certain suppleness, can be to generation wearing and tearing or very little not the getting final product of wearing and tearing of cylinder body 1 and the leg disc 4 of Vertical Cylinders when crane job.
In addition, near cover body 3 terminal the time, the thickness of cover body 3 can also increase gradually, inwardly shrinks endways to form the fleetline annular projection, to increase suppleness and the elastic recovery capability of cover body 3 main paragraphs.
Please refer to Fig. 6 and Fig. 7, Fig. 6 is the birds-eye view when being subject to diametral load in a kind of specific embodiment of the cover body of leg device provided by the utility model, and Fig. 7 is the front elevation of the cover body of the leg device shown in Fig. 6 when being subject to diametral load; Wherein, the state the when state when icon A represents not stressed its cross-sectional plane of cover body for circle, icon B cover body are subject to its cross-sectional plane of external force F for ellipse.
Apply an external force F radially at cover body 3, its stress point is positioned at the end of the main part 31 of cover body 3 substantially.Elastic deformation occurs in main part 31 at the effect lower cover 3 of external force F diametrically, its cross-sectional plane is become substantially oval by original circle, be that cover body 3 becomes state B by state A, as shown in Figure 7, oval-shaped major axis is substantially vertical with the direction of external force F, minor axis overlaps substantially with the direction of external force F, and the elastic deformation of cross-sectional plane increases with the distance of itself and stressed cross-sectional plane and reduces on the cover body 3; After removing external force F, cover body 3 can restore to the original state substantially, again return to state A by state B, and the distortion of the upper end of cover body 3 is very little in whole process.
In addition, the utility model also provides a kind of hoisting crane that comprises above-mentioned leg device, and the structure of these other each several parts of hoisting crane please refer to prior art, and this paper repeats no more.
Specifically, this hoisting crane can be movable crane.
Above leg device provided by the utility model and hoisting crane with this leg device are described in detail.Used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (8)
1. leg device that is used for hoisting crane, comprise Vertical Cylinders (1) and leg disc (4), described Vertical Cylinders (1) is connected with described leg disc (4) by the bulb (11) of its lower end, it is characterized in that, also comprise cover body (3) and fastener, described cover body (3) is sleeved on the casing wall of described Vertical Cylinders (1), and the main part (31) of described cover body (3) covers on the outside of described leg disc (4); Described fastener is fastened on described cover body (3) on the casing wall of Vertical Cylinders (1).
2. leg device according to claim 1 is characterized in that, described fastener is larynx hoop (2).
3. leg device according to claim 2 is characterized in that, described larynx hoop (2) is corrosion-resistant steel larynx hoop.
4. leg device according to claim 1 is characterized in that, being shaped as of described main part (31) is bowl-shape.
5. leg device according to claim 1 is characterized in that, the inboard of the bottom of described main part (31) is provided with annular projection.
6. according to claim 1 to the described leg device of 5 any one, it is characterized in that, described cover body (3) is the rubber cover body.
7. a hoisting crane comprises movable supporting legs, it is characterized in that, described movable supporting legs captive joint is just like the described leg device of claim 1 to 6 any one.
8. hoisting crane according to claim 7 is characterized in that, is specially movable crane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220246977 CN202657873U (en) | 2012-05-29 | 2012-05-29 | Supporting leg device and crane with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220246977 CN202657873U (en) | 2012-05-29 | 2012-05-29 | Supporting leg device and crane with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202657873U true CN202657873U (en) | 2013-01-09 |
Family
ID=47452794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220246977 Expired - Lifetime CN202657873U (en) | 2012-05-29 | 2012-05-29 | Supporting leg device and crane with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202657873U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953648A (en) * | 2016-06-06 | 2016-09-21 | 北京航天发射技术研究所 | High-strength support disc |
| CN113635161A (en) * | 2021-08-19 | 2021-11-12 | 宇环数控机床股份有限公司 | Double-ended grinding machine |
-
2012
- 2012-05-29 CN CN 201220246977 patent/CN202657873U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105953648A (en) * | 2016-06-06 | 2016-09-21 | 北京航天发射技术研究所 | High-strength support disc |
| CN113635161A (en) * | 2021-08-19 | 2021-11-12 | 宇环数控机床股份有限公司 | Double-ended grinding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |
|
| CX01 | Expiry of patent term |