CN201209094Y - Hoisting machine hoist boom telescopic and self locking apparatus with automatic on-off lock plate - Google Patents
Hoisting machine hoist boom telescopic and self locking apparatus with automatic on-off lock plate Download PDFInfo
- Publication number
- CN201209094Y CN201209094Y CNU2008200521808U CN200820052180U CN201209094Y CN 201209094 Y CN201209094 Y CN 201209094Y CN U2008200521808 U CNU2008200521808 U CN U2008200521808U CN 200820052180 U CN200820052180 U CN 200820052180U CN 201209094 Y CN201209094 Y CN 201209094Y
- Authority
- CN
- China
- Prior art keywords
- jam plate
- locking
- lock
- arm
- boss
- Prior art date
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Jib Cranes (AREA)
Abstract
The utility model relates to a telescopic self-locking device of a crane jib with a locking plate which can clutch automatically. The utility model has the proposal as follows: a retention device is arranged on an inner arm (17); an outer arm (18) which is adjacently sleeved with the inner arm (17) is hinged with a locking plate (3) which is corresponding to the retention device; a first driving boss (1) and a second driving boss (2) are arranged at the front and the rear of the retention device along the telescopic direction of the crane jib; and a locking plate boss (2) is arranged at one side of the locking plate (3), which is adjacent to the inner arm (17), and the other side of the locking plate (3) is connected with a potential difference type locking-plate clutch state lock (5) by a movable post (12). The telescopic self-locking device uses the driving boss arranged on the inner arm and the locking plate and the potential difference type locking-plate clutch state lock to realize the clutch control of the locking plate, and the power needed by the locking-plate clutch is indirectly provided by the driving boss, thereby greatly simplifying the structure of the telescopic self-locking device of the crane jib, leading the control to be more convenient, greatly improving the adaptability and reliability of the self-locking device and reducing the production cost.
Description
Technical field:
The utility model relates to the crane hoisting arm expansion self-locking devices of a kind of crane hoisting arm expansion self-locking devices, particularly a kind of automatic on-off jam plate.
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, the simple speed of this mode principle is fast, but owing to do not have blocking device between adjacent arm, the retractor device carrying is very big during lift heavy, 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 applicable to that at present 5 joint arms are 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 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.
Chinese invention patent application CN1669904A also discloses a kind of self-locking device for telescopic arm of crane, the principle of work of this device as shown in Figure 1, being arranged at the jam plate swung of outer arm head docks with block on being welded on inner arm plate, thereby the retraction that has stoped inner arm, when needs contract arm,, jam plate is mentioned by the jam plate control setup, make with block and separate, then arm can bounce back freely.But the jam plate control setup in the arm self-locking device (also can be described as the jam plate arrangement of clutch) uses electromagnet to realize usually, this just needs the cable drum device of carrying electric current, arm hoisting crane for multi-joint telescoping just needs a plurality of cable drums, and carry electric current bigger, this brings sizable difficulty for the realization of self-locking device, and its reliability also is greatly affected.
The utility model content:
Technical problem to be solved in the utility model is to need working power device (electromagnet) to drive at existing self-locking device jam plate clutch, the realization technical sophistication, the deficiency of poor reliability, provide a kind of simple in structure, good reliability, the crane hoisting arm expansion self-locking devices of automatic on-off jam plate.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of crane hoisting arm expansion self-locking devices of automatic on-off jam plate, it is characterized in that: on inner arm (17), be provided with retaining means, with be hinged with and the cooresponding jam plate of retaining means (3) on the outer arm (18) of the adjacent suit of inner arm (17), be provided with first at described retaining means before and after the hoisting arm expansion direction and drive the boss (1) and the second driving boss (6); The one side adjacent with inner arm (17) at jam plate (3) is provided with jam plate boss (2), and another side is connected with level difference type jam plate clutch state lock (5) by active column (12).
Described level difference type jam plate clutch state lock (5) comprising: be set in the active column (12) on the column (14); One end of active column (12) is connected with jam plate (3), other end captive joint wedge shape contact block (10); Wedge shape contact block (10) has and column (14) base bonded assembly column spring (13); One side of active column (12) is provided with the lock box (15) that contacts with wedge shape contact block (10), be provided with in the lock box (15) and comprise the movable lock pin (9) and the fixing flexible lock core (7) of lock pin (8), be provided with lock core spring (16) between flexible lock core (7) and the lock box (15), the opposite side of active column (12) is provided with the reed (11) that can conflict with wedge shape contact block (10) and flexible lock core (7).
Described retaining means is block (4); Perhaps described retaining means is hole slot (19), and the described first driving boss (1) is hole slot edge (20).
Compared with prior art, the beneficial effects of the utility model are: the utility model need not use the outer jam plate clutch controller for propulsion source (electromagnet) of band, the clutch for clutch control that driving boss that generation and use is arranged on inner arm and the jam plate and level difference type jam plate clutch state lock are realized jam plate, jam plate clutch required drive provides indirectly by driving boss, therefore saved the cable drum of carrying electric current, simplified the structure of crane hoisting arm expansion self-locking devices greatly, make control very simple, greatly improved the applicability of self-locking device, reliability has reduced productive costs again.
Description of drawings:
Fig. 1 is existing self-locking device for telescopic arm of crane principle schematic.
Fig. 2 is the utility model locking state scheme drawing.
Fig. 3 backs down the jam plate view for the boss on the utility model inner arm contacts with boss on the jam plate.
Fig. 4 is pushed up the end position scheme drawing for block on the utility model inner arm and boss on the jam plate contact jam plate.
Fig. 5 is the utility model level difference type jam plate clutch state lock mode of operation one scheme drawing.
Fig. 6 is the utility model level difference type jam plate clutch state lock mode of operation two scheme drawings.
Fig. 7 is the utility model level difference type jam plate clutch state lock mode of operation three scheme drawings.
Locking state scheme drawing when Fig. 8 is hole slot for retaining means of the present utility model.
The specific embodiment:
As Fig. 2-shown in Figure 4, general configuration of the present utility model is, on inner arm 17, be provided with block 4, block 4 is provided with the first driving boss 1, the second driving boss 6 along the front and back of hoisting arm expansion direction, head at the outer arm 18 of adjacent suit is hinged with and block 4 cooresponding jam plates 3, jam plate 3 and inner arm 17 adjacent one sides are provided with jam plate boss 2, and jam plate 3 and inner arm 17 opposing one sides are connected level difference type jam plate clutch state lock 5 by active column 12.
As Fig. 5-shown in Figure 7, level difference type jam plate clutch state lock 5 of the present utility model comprises the active column 12 that is set on the column 14; Active column 12 1 ends are connected with block 4, other end captive joint wedge shape contact block 10; Wedge shape contact block 10 has and column 14 base bonded assembly column springs 13; One side of active column 12 is provided with the lock box 15 that contacts with wedge shape contact block 10, be provided with in the lock box 15 and comprise the movable lock pin 9 and the fixing flexible lock core 7 of lock pin 8, be provided with lock core spring 16 between flexible lock core 7 and the lock box 15, the opposite side of active column 12 is provided with the reed 11 that can conflict with wedge shape contact block 10 and flexible lock core 7.
As Fig. 2-shown in Figure 7, be the utility model running condition figure, at first inner arm 17 is locked, jam plate 3 rides on the inner arm 17 and with block 4 and docks, the active column 12 of level difference type jam plate clutch state lock 5 is in the extreme higher position, wedge shape contact block 10 is reed 11 jack-up, flexible lock core 7 under the elastic force effect of lock core spring 16 to column 14 directions move and pressing on the wallboard of lock box 15, movable lock pin 9 and fixedly lock pin 8 stretch out lock box 15.
When the utility model inner arm need contract the arm release, earlier inner arm 17 is stretched out, make jam plate 3 break away from the block 4 of inner arm 17, then making first on the inner arm 17 drive boss 1 contacts with jam plate boss 2 on the jam plate 3, thereby back down jam plate 3, the active column 12 of level difference type jam plate clutch state lock 5 moves down, wedge shape contact block 10 pushing activity lock pins 9 are entered in the lock box 15, active column 12 and wedge shape contact block 10 continue to be displaced downwardly to movable lock pin 9 and fixing lock pin 8 midways location, movable lock pin 9 multiple ejections again, active column 12 and jam plate 3 are locked, the arm action of can doing to contract this moment, make inner arm 17 retractions, when block 4 is reduced to jam plate 3 present positions, contact with jam plate boss 2 on the jam plate 3, jam plate 3 is pushed up to end position, simultaneously, wedge shape contact block 10 continues to move down, and pushing tow is lock pin 8 fixedly, and fixedly lock pin 8 is fixed together with flexible lock core 7, when fixedly lock pin 8 was by pushing tow, flexible lock core 7 drive activity simultaneously lock pin 9 moved to the highest distance position that departs from column 14 together.And reed 11 falls and withstands flexible lock core 7, makes it remain on state shown in Figure 7.
This moment, active column 12 moved up under the effect of column spring 13, makes jam plate 3 be affixed to inner arm 17, and withstands block 4 as if semi-girder, realized locking.If continue the arm that contracts, after block 4 passes through, active column 12 also can move up under the effect of column spring 13, make jam plate 3 be affixed to inner arm 17, second driving boss 6 and contact on the jam plate boss 2 on the jam plate 3 and inner arm 17 with jam plate 3 jack-up again, and lock again by level difference type jam plate clutch state lock 5, the arm that so can continue to contract is all withdrawn until inner arm.
As shown in Figure 8, also available pores groove edge 20 is alternative to drive boss 1 as the also replaceable one-tenth hole slot 19, the first of the block 4 of retaining means in the utility model, cooperates said structure can realize the expansion self-locking of crane arm equally.
Claims (4)
1, a kind of crane hoisting arm expansion self-locking devices of automatic on-off jam plate, it is characterized in that: on inner arm (17), be provided with retaining means, with be hinged with and the cooresponding jam plate of retaining means (3) on the outer arm (18) of the adjacent suit of inner arm (17), be provided with first at described retaining means before and after the hoisting arm expansion direction and drive the boss (1) and the second driving boss (6); The one side adjacent with inner arm (17) at jam plate (3) is provided with jam plate boss (2), and another side is connected with level difference type jam plate clutch state lock (5) by active column (12).
2, the crane hoisting arm expansion self-locking devices of automatic on-off jam plate according to claim 1 is characterized in that, described level difference type jam plate clutch state lock (5) comprising: be set in the active column (12) on the column (14); One end of active column (12) is connected with jam plate (3), other end captive joint wedge shape contact block (10); Wedge shape contact block (10) has and column (14) base bonded assembly column spring (13); One side of active column (12) is provided with the lock box (15) that contacts with wedge shape contact block (10), be provided with in the lock box (15) and comprise the movable lock pin (9) and the fixing flexible lock core (7) of lock pin (8), be provided with lock core spring (16) between flexible lock core (7) and the lock box (15), the opposite side of active column (12) is provided with the reed (11) that can conflict with wedge shape contact block (10) and flexible lock core (7).
3, the crane hoisting arm expansion self-locking devices of automatic on-off jam plate according to claim 1 is characterized in that: described retaining means is block (4).
4, the crane hoisting arm expansion self-locking devices of automatic on-off jam plate according to claim 1 is characterized in that: described retaining means is hole slot (19), and the described first driving boss (1) is hole slot edge (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200521808U CN201209094Y (en) | 2008-01-25 | 2008-01-25 | Hoisting machine hoist boom telescopic and self locking apparatus with automatic on-off lock plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200521808U CN201209094Y (en) | 2008-01-25 | 2008-01-25 | Hoisting machine hoist boom telescopic and self locking apparatus with automatic on-off lock plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201209094Y true CN201209094Y (en) | 2009-03-18 |
Family
ID=40479823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200521808U Expired - Fee Related CN201209094Y (en) | 2008-01-25 | 2008-01-25 | Hoisting machine hoist boom telescopic and self locking apparatus with automatic on-off lock plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201209094Y (en) |
Cited By (1)
| 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 |
-
2008
- 2008-01-25 CN CNU2008200521808U patent/CN201209094Y/en not_active Expired - Fee Related
Cited By (1)
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2436639B1 (en) | Counterweight loading and unloading device and movable crane | |
| CN103626058B (en) | Auxiliary luffing device, hoisting crane and auxiliary luffing method | |
| CN102910542B (en) | Telescopic boom of marine crane | |
| CN201850088U (en) | Single-cylinder telescopic arm and crane provided with same | |
| CN101492145B (en) | Crane hoisting arm expansion self-locking devices with automatic on-off jam plate and methods thereof | |
| CN101979307B (en) | Single-cylinder pin plugging/unplugging mechanism for telescopic crane | |
| CN201209094Y (en) | Hoisting machine hoist boom telescopic and self locking apparatus with automatic on-off lock plate | |
| CN201395480Y (en) | Multifunctional jib head device of crawler crane | |
| CN203729212U (en) | Cable loading crane with hydraulic traction and idler wheel walking combined | |
| CN202022662U (en) | Top-arranged vertical drag chain mechanism | |
| CN205294674U (en) | Bolt connection structure, cantilever crane and hoist | |
| CN115092835A (en) | Pin inserting and pulling mechanism and operation machine | |
| CN201102864Y (en) | Sling racking and anchoring device of double-40-feet crane | |
| CN216549346U (en) | Auxiliary arm supporting assembly and crane | |
| CN201235037Y (en) | Medical bed | |
| CN201664820U (en) | Lifting-overturning device convenient for taking work piece | |
| CN203439963U (en) | Folding arm crane head winding device | |
| CN216904608U (en) | Large-scale motor overhauls platform | |
| CN109292650B (en) | Auxiliary arm | |
| CN202293411U (en) | Safety protection device for slide block of hydraulic press | |
| CN112938790A (en) | Hydraulic driving device for telescopic arm of crane | |
| CN213416006U (en) | Crane grabbing device | |
| CN219726080U (en) | Auxiliary shaft inserting and extracting system and engineering vehicle | |
| CN216512558U (en) | Mechanical driving cylinder head block | |
| CN216836816U (en) | Hoisting equipment and multifunctional combined type lifting appliance thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20120125 |