CN203112383U - Boom root connecting device of tower crane - Google Patents
Boom root connecting device of tower crane Download PDFInfo
- Publication number
- CN203112383U CN203112383U CN2012207364471U CN201220736447U CN203112383U CN 203112383 U CN203112383 U CN 203112383U CN 2012207364471 U CN2012207364471 U CN 2012207364471U CN 201220736447 U CN201220736447 U CN 201220736447U CN 203112383 U CN203112383 U CN 203112383U
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- CN
- China
- Prior art keywords
- arm root
- bearing pin
- connecting panel
- slewing tower
- open slot
- 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 - Lifetime
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Abstract
The utility model discloses a boom root connecting device of a tower crane and relates to engineering machinery. The boom root connecting device comprises a boom root joint, a rotating tower body connecting plate and a pin shaft II, wherein a U-shaped open slot is formed in the outer side of the rotating tower body connecting plate; the pin shaft II is placed in a boom root joint sleeve; two ends of the pin shaft II are inserted into the rotating tower body connecting plate through the U-shaped open slot; a clamping plate is arranged at the outer side of the rotating tower body connecting plate; a U-shaped open slot II is formed in the clamping plate; annular grooves are formed in two ends of the pin shaft II; the clamping plate is inserted into the annular grooves through the U-shaped open slot II; the rotating tower body connecting plate and the clamping plate are connected through two pin shafts I; and the two pin shafts I are locked by cotter pins. The boom root connecting device is reasonable in structure layout, simple in operation, convenient and practical, safe and reliable and high in reliability and stability.
Description
Technical field
The utility model relates to a kind of construction machinery and equipment, specifically relates to jib for tower crane arm root connecting device.
Background technology
Tower crane is building engineering operation crane hoisting equipment commonly used, crane arm then is the indispensable part of tower crane, crane arm arm root connecting device various informative, traditional method is welded in the crane arm lower boom for utilizing the forging joint, utilize bearing pin to be connected with upper bracket or slewing tower, this method is simple but safety is relatively poor, need weld gusset around joint and strengthen, and is cumbersome when installing simultaneously.
Summary of the invention
In order to overcome above-mentioned defective, the utility model provides a kind of quick and convenient, safe and reliable tower crane arm arm root connecting device of installing and removing.
The utility model is achieved by the following technical solution: a kind of jib for tower crane arm root connecting device, it comprises: arm root joint, slewing tower connecting panel and bearing pin two.Described arm root joint is welded by two arm root otic placodes and cover, described arm root otic placode one end and cover welding, the arm root otic placode other end and the welding of arm root lower boom.Described slewing tower connecting panel is two, and two slewing tower connecting panels are welded in parallel on the slewing tower master string; Described arm root joint is connected with the slewing tower connecting panel by bearing pin two.It is characterized in that: make U-shaped open slot in the outside of described slewing tower connecting panel; The bearing pin two of packing in the cover of described arm root joint, described bearing pin two two ends are inserted in the slewing tower connecting panel by U-shaped open slot.At the arranged outside clamp of described slewing tower connecting panel, U-shaped open slot two is arranged on the described clamp, described bearing pin two two ends make circular groove, and described clamp inserts in the described circular groove by U-shaped open slot two.Be connected by two bearing pins one between described slewing tower connecting panel and the clamp, described bearing pin one usefulness spring cotter locks.
The beneficial effects of the utility model are: the utility model reasonable structural arrangement, simple to operate, and convenient and practical, safe and reliable, have higher reliability and stability.
Description of drawings
The utility model is described in further detail below in conjunction with embodiment and accompanying drawing.
Fig. 1 is the utility model installation site scheme drawing;
Fig. 2 is the I place partial enlarged drawing of Fig. 1, also is the utility model structural representation;
Fig. 3 is the B-B step profile figure of Fig. 2;
Fig. 4 is the structural representation of parts arm root otic placode 4;
Fig. 5 is the A-A cutaway view of Fig. 4.
Among the figure: 1, arm root joint, 2, arm root lower boom, 3, the slewing tower connecting panel, 3-1, U-shaped open slot one, 4, clamp, 4-1, U-shaped open slot two, 5, bearing pin one, 6, bearing pin two, 6-1, circular groove, 7, spring cotter, 8, arm root otic placode, 9, cover, 10, slewing tower master string, 11, crane arm.
The specific embodiment
Shown in Fig. 1 to 5: a kind of jib for tower crane arm root connecting device, it comprises: arm root joint 1, slewing tower connecting panel 3 and bearing pin 26.Described arm root joint 1 is welded by two arm root otic placodes 8 and cover 9, described arm root otic placode 8 one ends and cover 9 welding, arm root otic placode 8 other ends and 2 welding of arm root lower boom.Described slewing tower connecting panel 3 is two, and two slewing tower connecting panels 3 are welded in parallel on the slewing tower master string 10.Arm root joint 1 is connected with slewing tower connecting panel 3 by bearing pin 26; It is characterized in that: make U-shaped open slot 3-1 in the outside of described slewing tower connecting panel 3, the bearing pin 26 of in the cover 9 of described arm root joint 1, packing into, described bearing pin 26 two ends are inserted in the slewing tower connecting panel 3 by U-shaped open slot 3-1.
As shown in Figure 3, Figure 4: for fear of the longitudinal travel between slewing tower connecting panel 3 and arm root joint 1, bearing pin 26 threes, improve the rigidity that slewing tower connecting panel 3 is connected with arm root joint 1, at the arranged outside clamp 4 of described slewing tower connecting panel 3, U-shaped open slot two 4-1 are arranged on the described clamp 4; Described bearing pin 26 two ends make circular groove 6-1; Described clamp 4 inserts among the described circular groove 6-1 by U-shaped open slot two 4-1.Be connected by two bearing pins 1 between described slewing tower connecting panel 3 and the clamp 4,7 lockings of described bearing pin one 5 usefulness spring cotters avoid bearing pin 1 to come off.
As shown in Figure 1, 2, 3: the installation method of described jib for tower crane arm root connecting device is: bearing pin 26 is penetrated in the arm root joint 1, crane arm 11 is sling, make bearing pin 26 put into U-shaped open slot one 3-1 of slewing tower connecting panel 3, clamp 4 is snapped among the circular groove 6-1 of bearing pin 26, bearing pin 1 is penetrated clamp 4, slewing tower connecting panel 3 successively, and spring cotter 7 penetrated in the bearing pin 1 fully open, finish installation.
The method for dismounting of jib for tower crane arm root connecting device is: with spring cotter 7 closed and extractions; With taking out in clamp 4 and the bearing pin 1, crane arm 11 is upwards lifted taking-up together with bearing pin 26 from slewing tower connecting panel 3, finish dismounting.
This utility model reasonable structural arrangement, simple to operate, convenient and practical, safe and reliable, have higher reliability and stability.
Claims (1)
1. jib for tower crane arm root connecting device, it comprises: arm root joint (1), slewing tower connecting panel (3) and bearing pin two (6); Described arm root joint (1) is welded by two arm root otic placodes (8) and cover (9), described arm root otic placode (8) one ends and cover (9) welding, arm root otic placode (8) other end and arm root lower boom (2) welding; Described slewing tower connecting panel (3) is two, and two slewing tower connecting panels (3) are welded in parallel on the slewing tower master string (10); Described arm root joint (1) is connected with slewing tower connecting panel (3) by bearing pin two (6); It is characterized in that: make U-shaped open slot (3-1) in the outside of described slewing tower connecting panel (3); The bearing pin two (6) of in the cover (9) of described arm root joint (1), packing into, described bearing pin two (6) two ends are inserted in the slewing tower connecting panel (3) by U-shaped open slot (3-1); At the arranged outside clamp (4) of described slewing tower connecting panel (3), U-shaped open slot two (4-1) is arranged on the described clamp (4); Described bearing pin two (6) two ends make circular groove (6-1); Described clamp (4) inserts in the described circular groove (6-1) by U-shaped open slot two (4-1); Be connected by two bearing pins one (5) between described slewing tower connecting panel (3) and the clamp (4), described bearing pin one (5) is with spring cotter (7) locking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207364471U CN203112383U (en) | 2012-12-27 | 2012-12-27 | Boom root connecting device of tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207364471U CN203112383U (en) | 2012-12-27 | 2012-12-27 | Boom root connecting device of tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203112383U true CN203112383U (en) | 2013-08-07 |
Family
ID=48892752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207364471U Expired - Lifetime CN203112383U (en) | 2012-12-27 | 2012-12-27 | Boom root connecting device of tower crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203112383U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449319A (en) * | 2013-09-06 | 2013-12-18 | 中联重科股份有限公司 | Lifting arm and crane |
| CN103910292A (en) * | 2014-03-11 | 2014-07-09 | 徐州建机工程机械有限公司 | Crane arm connection structure of luffing jib tower crane |
| CN103910291A (en) * | 2014-03-11 | 2014-07-09 | 徐州建机工程机械有限公司 | Connection structure of crane arm with flatted tower top |
| CN105480874A (en) * | 2015-10-30 | 2016-04-13 | 徐州建机工程机械有限公司 | Cargo boom main chord rod structure of tower crane with luffing boom |
| CN106495031A (en) * | 2016-11-29 | 2017-03-15 | 徐州建机工程机械有限公司 | A kind of derrick crane tower-body standard section bindiny mechanism |
-
2012
- 2012-12-27 CN CN2012207364471U patent/CN203112383U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449319A (en) * | 2013-09-06 | 2013-12-18 | 中联重科股份有限公司 | Lifting arm and crane |
| CN103449319B (en) * | 2013-09-06 | 2015-12-02 | 中联重科股份有限公司 | Crane arm and hoisting crane |
| CN103910292A (en) * | 2014-03-11 | 2014-07-09 | 徐州建机工程机械有限公司 | Crane arm connection structure of luffing jib tower crane |
| CN103910291A (en) * | 2014-03-11 | 2014-07-09 | 徐州建机工程机械有限公司 | Connection structure of crane arm with flatted tower top |
| CN105480874A (en) * | 2015-10-30 | 2016-04-13 | 徐州建机工程机械有限公司 | Cargo boom main chord rod structure of tower crane with luffing boom |
| CN106495031A (en) * | 2016-11-29 | 2017-03-15 | 徐州建机工程机械有限公司 | A kind of derrick crane tower-body standard section bindiny mechanism |
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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: 20130807 |
|
| CX01 | Expiry of patent term |