CN116374860A - Turnover type supporting leg for crane - Google Patents
Turnover type supporting leg for crane Download PDFInfo
- Publication number
- CN116374860A CN116374860A CN202211695512.5A CN202211695512A CN116374860A CN 116374860 A CN116374860 A CN 116374860A CN 202211695512 A CN202211695512 A CN 202211695512A CN 116374860 A CN116374860 A CN 116374860A
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- China
- Prior art keywords
- oil cylinder
- telescopic
- telescopic oil
- leg box
- support leg
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- Legal status (The legal status 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 status listed.)
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- 230000007306 turnover Effects 0.000 title claims abstract description 21
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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
- B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated
Abstract
The invention relates to the technical field of hoisting machinery, in particular to a turnover type supporting leg for a crane, which comprises the following components: the support leg box assembly is connected with the telescopic support leg box in a sliding manner, and a first telescopic oil cylinder is arranged between the support leg box assembly and the telescopic support leg box; the outer side of the telescopic supporting leg box is provided with a second telescopic oil cylinder and a third telescopic oil cylinder, and an oil cylinder bracket is connected between the second telescopic oil cylinder and the third telescopic oil cylinder; the telescopic support leg box, the second telescopic oil cylinder, the third telescopic oil cylinder and the oil cylinder support form a similar four-bar structure together, the similar four-bar structure takes the joint of the third telescopic oil cylinder and the telescopic support leg box as a rotation center, the second telescopic oil cylinder stretches out and draws back, and the oil cylinder support drives the third telescopic oil cylinder to overturn. The turnover type supporting leg for the crane can solve the problem that a conventional supporting leg cannot be used and turned over in a limited width space.
Description
Technical Field
The invention relates to the technical field of hoisting machinery, in particular to a turnover type supporting leg for a crane.
Background
The railway crane is arranged on a special underframe and moves synchronously with the train. The railway crane needs to extend out of the supporting legs for supporting when performing hoisting operation; meanwhile, due to the influence of railway environment factors, the width of the railway crane cannot exceed the limit, so that the support legs are required to be retracted and not to be ultra-wide.
At present, two common forms of crane support legs are respectively an H-shaped support leg and an X-shaped support leg, wherein the H-shaped support leg has the functions of horizontal expansion and vertical lifting, but does not have the overturning function, and when the crane support leg is used on a railway crane, oil cylinders on two sides are ultra-wide after being retracted; the X-shaped supporting leg has the supporting leg overturning function, the oil cylinder is connected with the upper hinge point to be arranged on the outer side of the special underframe, and the supporting leg overturning is not interfered with the special underframe at the moment, but is as ultra-wide as the H-shaped supporting leg.
Disclosure of Invention
The invention aims to provide a turnover type supporting leg for a crane, which solves the problem that a conventional supporting leg cannot be used and turned over in a limited width space.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a turnover type landing leg for a crane, comprising: the support leg box assembly is connected with the telescopic support leg box in a sliding manner, and a first telescopic oil cylinder is arranged between the support leg box assembly and the telescopic support leg box; the outer side of the telescopic supporting leg box is provided with a second telescopic oil cylinder and a third telescopic oil cylinder, and an oil cylinder bracket is connected between the second telescopic oil cylinder and the third telescopic oil cylinder; the telescopic support leg box, the second telescopic oil cylinder, the third telescopic oil cylinder and the oil cylinder support form a similar four-bar structure together, the similar four-bar structure takes the joint of the third telescopic oil cylinder and the telescopic support leg box as a rotation center, the second telescopic oil cylinder stretches out and draws back, and the oil cylinder support drives the third telescopic oil cylinder to overturn.
Further, the supporting leg box assembly is arranged on the underframe and is connected with the frame through the fixed pin shaft and the leveling oil cylinder.
Further, the turnover type supporting legs for the crane are symmetrically arranged relative to the frame.
Further, the second telescopic oil cylinder, the third telescopic oil cylinder and the leveling oil cylinder are all provided with hydraulic locks.
Further, the bottom of the third telescopic oil cylinder is connected with the supporting leg disc through a limiting plate.
Further, the supporting leg box assembly is connected with the telescopic supporting leg box in a sliding mode through a sliding block.
Further, a C-shaped limiting cushion block for limiting the overturning angle of the third telescopic oil cylinder is arranged at the joint of the third telescopic oil cylinder and the telescopic support leg box.
Compared with the prior art, the invention has the beneficial effects that:
according to the turnover type supporting leg for the crane, provided by the invention, the telescopic turnover function is realized through the supporting leg box assembly, the telescopic supporting leg box, the first telescopic oil cylinder, the second telescopic oil cylinder and the third telescopic oil cylinder. On one hand, the width of two sides of the supporting leg can be controlled through the first telescopic oil cylinder; a similar four-bar structure is formed by the telescopic supporting leg box, the second telescopic oil cylinder, the third telescopic oil cylinder and the oil cylinder bracket, so that the third telescopic oil cylinder can be prevented from interfering with the second telescopic oil cylinder in the overturning process, and the overturning stability is ensured. On the other hand, the overturning angle of the third telescopic cylinder is limited by installing a C-shaped limiting cushion block; the second telescopic oil cylinder, the third telescopic oil cylinder and the leveling oil cylinder are prevented from failing due to faults by arranging the hydraulic lock. The turnover type supporting legs for the crane are symmetrically distributed on two sides of the frame, so that the frame cannot tip over to one side, and the stability and the safety of the whole crane are guaranteed.
Drawings
Fig. 1 is a schematic structural view of a turnover type support leg for a crane according to an embodiment of the present invention;
fig. 2 is a schematic diagram of connection relation of a turnover type support leg for a crane according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a first telescopic cylinder according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a hydraulic lock according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a leg plate according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a C-shaped limit pad according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a four-bar linkage-like structure according to an embodiment of the present invention.
In the figure: the hydraulic support comprises a 1-supporting leg box assembly, a 2-telescopic supporting leg box, a 3-third telescopic oil cylinder, a 4-oil cylinder bracket, a 5-second telescopic oil cylinder, a 6-first telescopic oil cylinder, a 7-sliding block, an 8-C-shaped limit cushion block, a 9-leveling oil cylinder, a 10-hydraulic lock, a 11-supporting leg disc, a 12-limit plate, a 13-fixed pin shaft, a 14-frame and a 15-underframe.
Detailed Description
The technical scheme of the patent is further described in detail below with reference to the specific embodiments.
Embodiments of the present patent are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present patent and are not to be construed as limiting the present patent, and the embodiments of the present patent and technical features in the embodiments may be combined with each other without conflict.
In one embodiment of the present invention, referring to fig. 1, 2 and 3, a turnover type support leg for a crane includes a support leg box assembly 1 and a telescopic support leg box 2. As shown in fig. 1, the leg box assembly 1 is arranged on the underframe 15 and is connected with the frame 14 through the fixed pin shaft 13, and as shown in fig. 3, a leveling cylinder 9 is also arranged between the leg box assembly 1 and the frame 14. The support leg box assembly 1 is in sliding connection with the telescopic support leg box 2 through a sliding block 7, and a first telescopic oil cylinder 6 for pushing the telescopic support leg box 2 to perform telescopic movement is arranged between the support leg box assembly 1 and the telescopic support leg box 2; one end of the first telescopic oil cylinder 6 is fixedly connected with the supporting leg box assembly 1, the other end of the first telescopic oil cylinder is fixedly connected with the telescopic supporting leg box 2, and the telescopic supporting leg box 2 is driven to slide relative to the supporting leg box assembly 1 through the first telescopic oil cylinder 6 so as to achieve extension and retraction of the telescopic supporting leg box 2. As shown in fig. 2, a second telescopic oil cylinder 5 and a third telescopic oil cylinder 3 are arranged outside the telescopic support leg box 2, an oil cylinder bracket 4 is connected between the second telescopic oil cylinder 5 and the third telescopic oil cylinder 3, and the telescopic support leg box 2, the second telescopic oil cylinder 5, the third telescopic oil cylinder 3 and the oil cylinder bracket 4 jointly form a similar four-bar structure. As shown in fig. 7, the connection part of the third telescopic oil cylinder 3 and the telescopic support leg box 2 is taken as a rotation center, after the telescopic support leg box 2 stretches out and reaches a proper position, the second telescopic oil cylinder 5 stretches out, the third telescopic oil cylinder 3 is driven to overturn through the oil cylinder support 4, as shown in fig. 5, the bottom of the third telescopic oil cylinder 3 is connected with the support leg disc 11 through the limiting plate 12, and after the third telescopic oil cylinder 3 is overturned and reaches a proper position, the third telescopic oil cylinder 3 stretches out, so that the support leg disc 11 touches the ground.
In the embodiment, one end of a first telescopic oil cylinder 6 is fixedly connected to the support leg box assembly 1, the other end of the first telescopic oil cylinder is fixedly connected to the telescopic support leg box 2, the telescopic support leg box 2 is driven to perform telescopic motion through the first telescopic oil cylinder 6, so that the telescopic support leg box 2 can extend and retract, and the width of two sides of a support leg can be controlled through the first telescopic oil cylinder 6; the telescopic supporting leg box 2, the second telescopic oil cylinder 5, the third telescopic oil cylinder 3 and the oil cylinder support 4 form a similar four-bar structure, so that the third telescopic oil cylinder 3 can be prevented from interfering with the second telescopic oil cylinder 5 in the overturning process, and the stability of the overturning process is ensured.
In one embodiment of the present invention, referring to fig. 1, the flip-type legs for the crane are symmetrically arranged with respect to the frame 14; as shown in fig. 4, the second telescopic cylinder 5, the third telescopic cylinder 3 and the leveling cylinder 9 are each provided with a hydraulic lock 10.
In this embodiment, the overturning type supporting legs for the crane are symmetrically distributed on two sides of the frame 14, so that the frame 14 cannot tip over to one side, and the stability and the safety of the whole crane are guaranteed. The second telescopic cylinder 5, the third telescopic cylinder 3 and the leveling cylinder 9 are prevented from being failed due to faults by arranging the hydraulic lock 10.
In an embodiment of the present invention, referring to fig. 3 and 6, a C-shaped limiting pad 8 for limiting the turning angle of the third telescopic cylinder 3 is disposed at the connection position of the telescopic leg box 2 and the third telescopic cylinder 3.
In this embodiment, the C-shaped limiting pad 8 is installed to limit the overturning angle of the third telescopic cylinder 3, so as to prevent the third telescopic cylinder 3 from being overturned excessively.
When the telescopic support is in operation, the first telescopic oil cylinder 6 drives the telescopic support leg box 2 to extend, when the telescopic support leg box reaches the working position, the second telescopic oil cylinder 5 extends, the third telescopic oil cylinder 3 is driven to overturn to a vertical state through the oil cylinder support 4, and the third telescopic oil cylinder 3 is in contact with the C-shaped limiting cushion block 8 at the moment, so that the overturning is prevented. The turnover type supporting legs for the crane are symmetrically arranged at two sides of the frame 14, after the third telescopic oil cylinders 3 are completely turned over, the third telescopic oil cylinders 3 at two sides of the frame 14 are symmetrically distributed, and the frame 14 can be effectively prevented from being overturned by the combination of the symmetrical distribution mode of the third telescopic oil cylinders 3 and the C-shaped limiting cushion block 8. After the third telescopic oil cylinder 3 is turned in place, the third telescopic oil cylinder 3 stretches out to drive the supporting leg disc 11 to touch the ground until no interaction force exists between the supporting leg box assembly 1 and the special underframe 15 and the supporting leg box assembly is not separated from the special underframe 15, and at the moment, the leveling oil cylinder 9 is adjusted to level the frame 14.
When the telescopic support leg box is retracted, the third telescopic oil cylinder 3 is retracted, the support leg disc 11 is driven to leave the ground, the support leg box assembly 1 falls back on the special underframe 15, the second telescopic oil cylinder 5 is retracted after the support leg box assembly 1 is stable, the third telescopic oil cylinder 3 is driven to overturn to be in a horizontal state through the oil cylinder support 4, and the first telescopic oil cylinder 6 drives the telescopic support leg box 2 to retract to return to an initial state.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the present invention, and these should also be considered as the scope of the present invention, which does not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (7)
1. A turnover type landing leg for a crane, comprising: the support leg box assembly is connected with the telescopic support leg box in a sliding manner, and a first telescopic oil cylinder is arranged between the support leg box assembly and the telescopic support leg box; the outer side of the telescopic supporting leg box is provided with a second telescopic oil cylinder and a third telescopic oil cylinder, and an oil cylinder bracket is connected between the second telescopic oil cylinder and the third telescopic oil cylinder; the telescopic support leg box, the second telescopic oil cylinder, the third telescopic oil cylinder and the oil cylinder support form a similar four-bar structure together, the similar four-bar structure takes the joint of the third telescopic oil cylinder and the telescopic support leg box as a rotation center, the second telescopic oil cylinder stretches out and draws back, and the oil cylinder support drives the third telescopic oil cylinder to overturn.
2. The turnover type landing leg for the crane according to claim 1, wherein the landing leg box assembly is arranged on the underframe and is connected with the frame through a fixed pin shaft and a leveling cylinder.
3. The flip-type leg for a crane according to claim 2, wherein the flip-type leg for a crane is symmetrically disposed with respect to the frame.
4. The turnover type landing leg for the crane according to claim 2, wherein the second telescopic cylinder, the third telescopic cylinder and the leveling cylinder are all provided with hydraulic locks.
5. The turnover type landing leg for the crane according to claim 1, wherein the bottom of the third telescopic oil cylinder is connected with the landing leg disc through a limiting plate.
6. The flip-type leg for a crane according to claim 1, wherein the leg box assembly is slidably connected to the telescopic leg box by a slider.
7. The turnover type landing leg for the crane according to claim 1, wherein a C-shaped limiting cushion block for limiting the turnover angle of the third telescopic oil cylinder is arranged at the joint of the third telescopic oil cylinder and the telescopic landing leg box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211695512.5A CN116374860A (en) | 2022-12-28 | 2022-12-28 | Turnover type supporting leg for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211695512.5A CN116374860A (en) | 2022-12-28 | 2022-12-28 | Turnover type supporting leg for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116374860A true CN116374860A (en) | 2023-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211695512.5A Pending CN116374860A (en) | 2022-12-28 | 2022-12-28 | Turnover type supporting leg for crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116374860A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116906386A (en) * | 2023-09-12 | 2023-10-20 | 临工重机股份有限公司 | Engineering machinery control system |
-
2022
- 2022-12-28 CN CN202211695512.5A patent/CN116374860A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116906386A (en) * | 2023-09-12 | 2023-10-20 | 临工重机股份有限公司 | Engineering machinery control system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240122 Address after: No. 17, the Pearl River East Road, Xuzhou High tech Industrial Development Zone, Xuzhou City, Jiangsu Province, 221000 Applicant after: XCMG FIRE-FIGHTING SAFETY EQUIPMENT Co.,Ltd. Country or region after: China Address before: No. 99, Chengyi Road, Xuzhou Economic and Technological Development Zone, Xuzhou City, Jiangsu Province, 221000 Applicant before: Xuzhou Xugong Port Machinery Co.,Ltd. Country or region before: China |