CN1669904B - Self-locking device for telescopic arm of crane - Google Patents
Self-locking device for telescopic arm of crane Download PDFInfo
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- CN1669904B CN1669904B CN 200510031339 CN200510031339A CN1669904B CN 1669904 B CN1669904 B CN 1669904B CN 200510031339 CN200510031339 CN 200510031339 CN 200510031339 A CN200510031339 A CN 200510031339A CN 1669904 B CN1669904 B CN 1669904B
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- arm
- jam plate
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- crane
- control setup
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- 230000000694 effects Effects 0.000 claims abstract description 5
- 230000003028 elevating effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention discloses an self-locking device for a telescopic boom of a crane, which comprises a first arm and an adjacent second arm matched with the first one, wherein the second arm is hinged to a lock plate (3) having unidirectional restriction effect and a control device for controlling the lock plate (3) swing, the first arm is at least provided with one block (4), the lock plate (3) is pressed on the first arm under the control of the control device and is abutted to the side wall of the block (4), or the first arm is at least provided with a slot (6), the lock plate (3) is inserted in the slot (6) under the control of the control device and is abutted to the slot (6). The invention is a telescopic mechanism without bearing heavy load and is a safe, reliable self-locking device for the telescopic boom of the crane which has simple structure, reasonable stress, and easy control, and is capable of obviously improving the crane elevating capacity, simplifying the telescopic mechanism, reducing the cost, and conveniently maintaining.
Description
Technical field
The present invention relates to a kind of hoisting crane, particularly relate to a kind of self-locking device for telescopic arm of crane.
Background technology
Telescopic arm of crane is a tubular structure, stretching of telescopic boom mainly contains two kinds of forms at present, a kind of is by telescopic oil cylinder and steel rope interlock, realize multistage arm synchronization telescope, this kind mode principle is simple, speed is fast, but owing to do not have blocking device between alternate arm, during lift heavy, the retractor device carrying is very big, limited the raising of load-carrying ability, and this kind mode internal placement difficulty, the gap is big between the arm tube, is unfavorable for the design optimization of arm tube, in addition, synchronization telescope only is suitable for 5 joint arms at present with interior medium and small tonnage hoisting crane.Another kind of stretch mode is the single-cylinder bolt stretch mode that is suitable for hoister in large tonnage, and this kind mode can be done thinnerly because oil cylinder does not bear hoisting weight, compact conformation, and shortcoming is that speed is slow, the requirement on machining accuracy height, control is complicated, and inconvenience is safeguarded.
Summary of the invention
Technical matters to be solved by this invention provides a kind of telescoping mechanism and does not bear lift heavy load, the retraction action of constraint telescopic boom, and semi-girder is unaffected and the self-locking device for telescopic arm of crane of self-locking.
In order to solve the problems of the technologies described above, the self-locking device for telescopic arm of crane that the present invention adopts, comprise the first arm and second arm of adjacent suit with it, be hinged with the jam plate of unilateral constrain effect and controlled the control setup that described jam plate is swung at described second arm, at least be provided with a block on described the first arm, described jam plate connects along sidewall riding on the described the first arm with behind the described block under the control of control setup; Or on described the first arm, be provided with a hole slot at least, described jam plate is inserted in the hole slot in the control declivity of control setup and docks with described hole slot forward position sidewall, described the first arm is an inner arm, described second arm is an outer arm, and described jam plate and described control setup are arranged on the head of described outer arm.
A kind of self-locking device for telescopic arm of crane, comprise the first arm and second arm of adjacent suit with it, be hinged with the jam plate of unilateral constrain effect and controlled the control setup that described jam plate is swung at described second arm, at least be provided with a block on described the first arm, described jam plate connects with described block forward position sidewall riding under the control of control setup on the described the first arm; Or on described the first arm, be provided with a hole slot at least, described jam plate is inserted in the hole slot with behind the described hole slot in the control declivity of control setup and docks along sidewall, described the first arm is an outer arm, described second arm is an inner arm, and described jam plate and described control setup are arranged on the root of described inner arm.
Described control setup is hydraulic ram, control wire or electromagnet.
Adopt the self-locking device for telescopic arm of crane of technique scheme, when jam plate rode under control setup control on the first arm and to connect with retaining means, jam plate can stop the inner arm retraction; When needing to receive arm, then should jam plate be mentioned by control setup, jam plate and block or hole slot are disengaged, inner arm can reclaim freely.
This self-locking device is applicable to that promptly arm is flexible simultaneously and rapidly, is applicable to that also the arm single cylinder is flexible step by step.
After adopting this self-locking device, telescoping mechanism does not bear lift heavy load, thereby simple in structure, and stressed rationally control can significantly improve the arm load-carrying ability easily, and can simplify telescoping mechanism, and cost-cutting is safe and reliable again, easy to maintenance.
In sum, the present invention is that a kind of telescoping mechanism does not bear lift heavy load and simple in structure, and is stressed reasonable, control can significantly improve the arm load-carrying ability easily, can simplify telescoping mechanism, cost-cutting, safe and reliable, easy to maintenance self-locking device for telescopic arm of crane.
Description of drawings
Fig. 1 is that the present invention adopts the block structural representation;
Fig. 2 is that the present invention adopts block structure result of use figure;
Fig. 3 is that the present invention adopts the hole slot structural representation.
The specific embodiment
Referring to Fig. 1, on inner arm 5, be provided with a baffle plate 4, outer arm 1 head be hinged with baffle plate 4 cooresponding jam plates 3 and control jam plate 3 swing up and down with baffle plate 4 sidewalls be in the butt joint and the electromagnet 2 that separates.
Referring to Fig. 1 and Fig. 2, during the hoisting crane lifting, jam plate 3 rides on the inner arm 5 under electromagnet 2 controls and connects with baffle plate 4 sidewalls, jam plate 3 stops inner arm 5 retractions, when needing to receive arm, then should jam plate 3 be mentioned by electromagnet 2, jam plate 3 and baffle plate 4 sidewalls are disengaged, inner arm 5 can reclaim freely, the retraction action of 3 constraints of jam plate telescopic boom, and semi-girder is unaffected.
Referring to Fig. 3, on inner arm 5, be provided with a hole slot 6, be hinged with to swing up and down to be inserted into hole slot 6 in to be at outer arm 1 head and dock and the electromagnet 2 that separates with hole slot 6 forward position sidewalls with hole slot 6 cooresponding jam plates 3 and control jam plate 3.
During the hoisting crane lifting, jam plate 3 rides on the inner arm 5 under electromagnet 2 controls and connects with hole slot 6 forward position sidewalls, jam plate 3 stops inner arm 5 retractions, when needing to receive arm, then should jam plate 3 be mentioned by electromagnet 2, jam plate 3 and hole slot 6 forward position sidewalls are disengaged, inner arm 5 can reclaim freely, the retraction action of 3 unilateral constrain telescopic booms of jam plate, and semi-girder is unaffected.
For the hoisting crane that adopts single cylinder classification telescoping boom, jam plate 3 can be hinged on the root of inner arm 5, and block 4 or hole slot 6 are arranged on the outer arm 1, can realize the locking control that internal outer arm is flexible relatively equally.On two adjacent two joint arms that are sleeved on together, be respectively equipped with retaining means and jam plate and the swing of control jam plate and be in retaining means and dock and separate control means so long as adopt, all belong to protection scope of the present invention.
Control setup also can adopt hydraulic ram or control wire, so long as control jam plate swing up and down with baffle plate or hole slot be in dock with separate control means all belong to protection scope of the present invention.
Self-locking device of the present invention both had been applicable to flexible simultaneously and rapidly (level is arranged), was applicable to that also single cylinder is flexible step by step.Can adopt electromagnet or control wire during synchronization telescope, single cylinder also can adopt hydraulic ram when flexible.
Claims (3)
1. self-locking device for telescopic arm of crane, comprise the first arm and second arm of adjacent suit with it, it is characterized in that: be hinged with the jam plate (3) of unilateral constrain effect and controlled the control setup that described jam plate (3) is swung at described second arm, at least be provided with a block (4) on described the first arm, described jam plate (3) connects along sidewall riding under the control of control setup on the described the first arm with described block (4) back; Or on described the first arm, be provided with a hole slot (6) at least, described jam plate (3) is inserted in the hole slot (6) in the control declivity of control setup and docks with described hole slot (6) forward position sidewall, described the first arm is an inner arm, described second arm is an outer arm, and described jam plate and described control setup are arranged on the head of described outer arm.
2. self-locking device for telescopic arm of crane, comprise the first arm and second arm of adjacent suit with it, it is characterized in that: be hinged with the jam plate (3) of unilateral constrain effect and controlled the control setup that described jam plate (3) is swung at described second arm, at least be provided with a block (4) on described the first arm, described jam plate (3) connects with described block (4) forward position sidewall riding under the control of control setup on the described the first arm; Or on described the first arm, be provided with a hole slot (6) at least, described jam plate (3) is inserted in the hole slot (6) in the control declivity of control setup and docks along sidewall with described hole slot (6) back, described the first arm is an outer arm, described second arm is an inner arm, and described jam plate and described control setup are arranged on the root of described inner arm.
3. self-locking device for telescopic arm of crane according to claim 1 and 2 is characterized in that: described control setup is hydraulic ram, control wire or electromagnet (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510031339 CN1669904B (en) | 2005-03-18 | 2005-03-18 | Self-locking device for telescopic arm of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510031339 CN1669904B (en) | 2005-03-18 | 2005-03-18 | Self-locking device for telescopic arm of crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1669904A CN1669904A (en) | 2005-09-21 |
| CN1669904B true CN1669904B (en) | 2011-08-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510031339 Active CN1669904B (en) | 2005-03-18 | 2005-03-18 | Self-locking device for telescopic arm of crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1669904B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101492145B (en) * | 2008-01-25 | 2011-06-15 | 陈奕松 | Crane hoisting arm expansion self-locking devices with automatic on-off jam plate and methods thereof |
| WO2019062680A1 (en) * | 2017-09-30 | 2019-04-04 | 陈奕松 | Locking device for telescopic boom, telescopic boom, crane, and extension/retraction locking method thereof |
| CN109368497A (en) * | 2018-12-21 | 2019-02-22 | 陈奕松 | A kind of connecton layout of telescopic arm of crane |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2249233Y (en) * | 1995-02-24 | 1997-03-12 | 黄锦标 | Single-seat ground, wall-clamping two-purpose crane |
-
2005
- 2005-03-18 CN CN 200510031339 patent/CN1669904B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2249233Y (en) * | 1995-02-24 | 1997-03-12 | 黄锦标 | Single-seat ground, wall-clamping two-purpose crane |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1669904A (en) | 2005-09-21 |
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Owner name: CHANGSHA ZOOMLION HEAVY INDUSTRY SCIENCE + TECHNOL Free format text: FORMER NAME: CHANG SHA ZOOMLION HEAVY INDUSTRY SCIENCE + TECHNOLOGY DEVELOPMENT CO., LTD. |
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Address after: 410007 No. 613 Middle South Furong Road, Hunan, Changsha Patentee after: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. Address before: 410007 No. 613 Middle South Furong Road, Hunan, Changsha Patentee before: CHANGSHA ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY DEVELOPMENT Co.,Ltd. |