CN203529803U - Section-to-section connecting structure of forearm of tower crane - Google Patents
Section-to-section connecting structure of forearm of tower crane Download PDFInfo
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- CN203529803U CN203529803U CN201320657936.2U CN201320657936U CN203529803U CN 203529803 U CN203529803 U CN 203529803U CN 201320657936 U CN201320657936 U CN 201320657936U CN 203529803 U CN203529803 U CN 203529803U
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Abstract
The utility model discloses a section-to-section connecting structure of a forearm of a tower crane. The section-to-section connecting structure comprises first section arm double-lug plates at the right end of a first section lifting beam, and a second section arm single-lug plate at the left end of a second section lifting beam, wherein the second section arm single-lug plate is mounted between the first section arm double-lug plates in which horizontal double-lug plate pin shaft grooves are formed and allow inserting of pin shafts; a pin shaft hole allowing the insertion of the pin shaft is formed in the second section arm single-lug plate and is in close fit with the pin shaft; a shaft clamping plate used for fixing the pin shaft is arranged on the first section arm double-lug plate at the inserting end of the pin shaft; a retaining plate used for locking the second section arm single-lug plate is arranged in the space between the left end of the second section arm single-lug plate and the first section arm double-lug plates. The connecting structure can realize efficient and quick assembly and disassembly, has relatively high compactness, and can improve the assembly and disassembly efficiency of the tower crane, as well as the mechanical strength and lifting moment.
Description
Technical field
The utility model relates to a kind of vehicle for construction, is specifically related to a kind of joint joint connection structure of tower machine forearm.
Background technology
Tower machine is as most widely used construction hoisting machinery, and the every field in building operation plays an important role.And the forearm of tower machine is as lifting load larrying member important in tower machine, the mechanical strength of forearm directly affects load-carrying ability and the maximum hoisting moment of tower machine, so the performance of forearm plays important effect for serviceability and the operational security of tower machine.
The mode that the joint joint connection structure of existing tower machine forearm mostly adopts bearing pin to connect, because pin shaft hole in connection is less, the joint joint attended operation difficulty of forearm is increased, especially aloft in assembling operation, task difficulty and the danger of forearm assembling have been increased, be unfavorable for improving convenience and the high efficiency of the assembly and disassembly of tower machine, thereby the work efficiency of tower machine is reduced.The existing forearm joint of part joint connection structure adopts larger pin shaft hole, although such design can reduce the difficulty of forearm assembly and disassembly, improved the packaging efficiency of tower machine, but because pin shaft hole is larger, make bearing pin not tight with coordinating of pin shaft hole, thereby cause joint joint connection structure not tight, forearm is shaken in the course of the work, be unfavorable for keeping the stability of tower machine operation.
So, in order to solve the deficiency of the joint joint connection structure of existing tower machine forearm, need to design a kind of efficiently rapid-assembling and dismounting, there is the tower machine forearm joint joint connection structure of higher tight ness rating, to improve the assembly and disassembly efficiency of tower machine, improve mechanical strength and the hoisting moment of tower machine.
Utility model content
The utility model technical issues that need to address are just to overcome the defect of prior art, a kind of joint joint connection structure of tower machine forearm is provided, its efficiently rapid-assembling and dismounting, there is higher tight ness rating, can improve the assembly and disassembly efficiency of tower machine, improve mechanical strength and the hoisting moment of tower machine, thereby improve lifting and the transaction capabilities of tower machine.
For addressing the above problem, the utility model adopts following technical scheme:
The joint joint connection structure of tower machine forearm, the joint joint connection structure of tower machine forearm comprises the first segment arm ears plate of first segment crane arm right-hand member and the second section arm monaural plate of second section crane arm left end, second section arm monaural plate is installed between first segment arm ears plate, and first segment arm ears plate and second section arm monaural plate vertically be arranged in parallel; First segment arm ears plate is provided with the ears plate pin groove arranging for inserting the horizontal direction of bearing pin, the length of ears plate pin groove is pin diameter 1.1 ~ 3 times; Second section arm monaural plate is provided with for penetrating the pin shaft hole of bearing pin, and pin shaft hole and bearing pin closely cooperate; The first segment arm ears plate of bearing pin insertion end is provided with the axle clamping plate for fixed pin shaft, and axle clamping plate is positioned on the first segment arm ears plate on ears plate pin groove right side; In space between the left end of second section arm monaural plate and first segment arm ears plate, be provided with the retaining plate for locking second section arm monaural plate, when bearing pin is passed after ears plate pin groove and pin shaft hole successively, utilize the deadweight of second section crane arm that second section arm monaural plate and bearing pin are moved right, now, bearing pin is positioned at the right-hand member of ears plate pin groove to be fixed by axle clamping plate, then in the space between second section arm monaural plate left end and first segment arm ears plate, insert retaining plate, first segment arm ears plate is connected with second section arm monaural plate close and firm.
Tight ness rating and stability that the utility model connects in order to improve bearing pin, guarantee the stronger mechanical strength of forearm, preferably technical scheme is, the height of ears plate pin groove is slightly larger than the diameter of bearing pin, be convenient to bearing pin insert and extract, to improve the convenience of forearm assembly and disassembly; Left end and the right-hand member of ears plate pin groove are the semicircular arc that the center of circle is positioned at ears plate pin groove, and semicircular arc end and the bearing pin of ears plate pin groove closely cooperate, and have improved the stability of joint joint connection structure.
The utility model is for the ease of assembly and disassembly tower machine forearm, and preferably technical scheme also has, and the left end of the right-hand member of first segment arm ears plate and second section arm monaural plate is regular cambered surface.
The utility model can arbitrarily not drop and lose in assembly and disassembly operation in order to guarantee bearing pin, and preferably technical scheme also has, and first segment arm ears plate is provided with for connecting the bearing pin chain of bearing pin, and one end of bearing pin chain is connected with the base portion of bearing pin.
The utility model can not drop in forearm assembly and disassembly operation in order to guarantee retaining plate, preferably technical scheme also has, the upper end length of retaining plate is greater than the spacing between first segment arm ears plate, the upper end of retaining plate is connected in the side of first segment arm ears plate by chain, the length of retaining plate middle part and bottom is less than the spacing of first segment arm ears plate.
The utility model is in order to improve the convenience of forearm assembly and disassembly, guarantees tight ness rating and the mechanical strength of joint joint connection structure simultaneously, and preferably technical scheme also has, the length of ears plate pin groove is pin diameter 1.5 times.
The assembly and disassembly process of the joint joint connection structure of the utility model tower machine forearm is: during assembling, second section arm monaural plate is inserted between first segment arm ears plate, bearing pin is inserted to ears plate pin groove and pin shaft hole, utilize the deadweight of second section arm to make bearing pin move to the right-hand member of ears plate pin groove and be connected in axle clamping plate, then in the space between second section arm monaural plate left end and first segment arm ears plate, insert retaining plate, complete assembling process; During dismounting, first take off retaining plate, then, by the lifting slightly of second section crane arm right-hand member, make bearing pin exit axle clamping plate to left movement, then extract bearing pin out and complete field-strip.
Advantage of the present utility model and beneficial effect are: the joint joint connection structure of the utility model tower machine forearm is provided with ears plate pin groove and pin shaft hole, can convenient and efficient complete the assembly and disassembly of crane arm, improve the assembly and disassembly efficiency of tower machine, improved the work efficiency of tower machine; The joint joint connection structure of the utility model tower machine forearm is provided with retaining plate and axle clamping plate, can keep higher tight ness rating and the mechanical strength of joint joint connection structure, thereby improves load-carrying ability and the maximum hoisting moment of tower machine.
Accompanying drawing explanation
Fig. 1 is the joint joint connection structure front elevation of the utility model tower machine forearm.
Fig. 2 is A part partial enlarged drawing in the utility model Fig. 1.
Fig. 3 is the joint joint connection structure birds-eye view of the utility model tower machine forearm.
In figure: 1, first segment crane arm; 2, retaining plate; 3, bearing pin; 4, first segment arm ears plate; 5, second section arm monaural plate; 6, axle clamping plate; 7, bearing pin chain; 8, ears plate pin groove; 9, second section crane arm.
The specific embodiment
embodiment 1
As shown in Figure 1, Figure 2 and Figure 3, the utility model is the joint joint connection structure of tower machine forearm, the joint joint connection structure of tower machine forearm comprises the first segment arm ears plate 4 of first segment crane arm 1 right-hand member and the second section arm monaural plate 5 of second section crane arm 9 left ends, second section arm monaural plate 5 is installed between first segment arm ears plate 4, and first segment arm ears plate 4 and second section arm monaural plate 5 vertically be arranged in parallel; First segment arm ears plate 4 is provided with the ears plate pin groove 8 arranging for inserting the horizontal direction of bearing pin 3, and the length of ears plate pin groove 8 is 2 times of bearing pin 3 diameters; Second section arm monaural plate 5 is provided with for penetrating the pin shaft hole of bearing pin 3, and pin shaft hole and bearing pin 3 closely cooperate; The axle clamping plate 6 that the first segment arm ears plate 4 of bearing pin 3 insertion ends is provided with for fixed pin shaft 3, axle clamping plate 6 is positioned on the first segment arm ears plate 4 on ears plate pin groove 8 right sides; In the space that the left end of second section arm monaural plate 5 and first segment arm ears plate are 4, be provided with the retaining plate 2 for locking second section arm monaural plate 5; The height of ears plate pin groove 8 is 1.05 times of bearing pin 3 diameters; The left end of ears plate pin groove 8 and right-hand member are the semicircular arc that the center of circle is positioned at ears plate pin groove 8.
On the basis of embodiment 1, the utility model is for the ease of assembly and disassembly tower machine forearm, the safety that improves forearm joint joint connection structure, preferably embodiment also has, and the left end of the right-hand member of first segment arm ears plate 4 and second section arm monaural plate 5 is regular cambered surface; First segment arm ears plate 4 is provided with for connecting the bearing pin chain 7 of bearing pin 3, and one end of bearing pin chain 7 is connected with the base portion of bearing pin 3; The upper end length of retaining plate 2 is greater than the spacing between first segment arm ears plate, and the upper end of retaining plate 2 is connected in the side of first segment arm ears plate 4 by chain, and the length of retaining plate 2 middle parts and bottom is less than the spacing of first segment arm ears plate; In order to improve the convenience of forearm assembly and disassembly, guarantee tight ness rating and the mechanical strength of joint joint connection structure simultaneously, the length of ears plate pin groove 8 is 1.5 times of bearing pin 3 diameters; Other parts are identical with embodiment 1.
Finally it should be noted that: obviously, above-described embodiment is only for the utility model example is clearly described, and the not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without also giving all embodiments.And the apparent variation of being amplified out thus or change are still among protection domain of the present utility model.
Claims (6)
1. the joint of tower machine forearm saves connection structure, it is characterized in that, the joint joint connection structure of tower machine forearm comprises the first segment arm ears plate of first segment crane arm right-hand member and the second section arm monaural plate of second section crane arm left end, second section arm monaural plate is installed between first segment arm ears plate, and first segment arm ears plate and second section arm monaural plate vertically be arranged in parallel; First segment arm ears plate is provided with the ears plate pin groove arranging for inserting the horizontal direction of bearing pin, the length of ears plate pin groove is pin diameter 1.1 ~ 3 times; Second section arm monaural plate is provided with for penetrating the pin shaft hole of bearing pin, and pin shaft hole and bearing pin closely cooperate; The first segment arm ears plate of bearing pin insertion end is provided with the axle clamping plate for fixed pin shaft, and axle clamping plate is positioned on the first segment arm ears plate on ears plate pin groove right side; In space between the left end of second section arm monaural plate and first segment arm ears plate, be provided with the retaining plate for locking second section arm monaural plate.
2. the joint of tower machine forearm as claimed in claim 1 joint connection structure, is characterized in that, the height of ears plate pin groove is slightly larger than the diameter of bearing pin, and left end and the right-hand member of ears plate pin groove are the semicircular arc that the center of circle is positioned at ears plate pin groove.
3. the joint of tower machine forearm as claimed in claim 2 joint connection structure, is characterized in that, the left end of the right-hand member of first segment arm ears plate and second section arm monaural plate is regular cambered surface.
4. the joint of tower machine forearm as claimed in claim 3 joint connection structure, is characterized in that, first segment arm ears plate is provided with for connecting the bearing pin chain of bearing pin, and one end of bearing pin chain is connected with the base portion of bearing pin.
5. the joint of tower machine forearm as claimed in claim 4 joint connection structure, is characterized in that, the upper end length of retaining plate is greater than the spacing between first segment arm ears plate, and the upper end of retaining plate is connected in the side of first segment arm ears plate by chain.
6. the joint of tower machine forearm as claimed in claim 5 joint connection structure, is characterized in that, the length of ears plate pin groove is pin diameter 1.5 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320657936.2U CN203529803U (en) | 2013-10-24 | 2013-10-24 | Section-to-section connecting structure of forearm of tower crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320657936.2U CN203529803U (en) | 2013-10-24 | 2013-10-24 | Section-to-section connecting structure of forearm of tower crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203529803U true CN203529803U (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320657936.2U Expired - Fee Related CN203529803U (en) | 2013-10-24 | 2013-10-24 | Section-to-section connecting structure of forearm of tower crane |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071707A (en) * | 2014-06-09 | 2014-10-01 | 江苏大通重工有限公司 | Cargo beam connecting device of minitype tower crane machinery |
| CN104512820A (en) * | 2014-12-19 | 2015-04-15 | 徐州建机工程机械有限公司 | Novel connection structure of cargo boom of flat-top crane |
| CN105905621A (en) * | 2016-06-17 | 2016-08-31 | 资阳市精工机械有限公司 | Quick-changing chuck |
| CN107792794A (en) * | 2017-11-01 | 2018-03-13 | 浙江省建设机械集团有限公司 | Novel crane boom lower chord connection structure |
| CN112239160A (en) * | 2020-11-04 | 2021-01-19 | 常德市荣程机械有限公司 | Node connection structure of tower machine forearm |
-
2013
- 2013-10-24 CN CN201320657936.2U patent/CN203529803U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071707A (en) * | 2014-06-09 | 2014-10-01 | 江苏大通重工有限公司 | Cargo beam connecting device of minitype tower crane machinery |
| CN104512820A (en) * | 2014-12-19 | 2015-04-15 | 徐州建机工程机械有限公司 | Novel connection structure of cargo boom of flat-top crane |
| CN105905621A (en) * | 2016-06-17 | 2016-08-31 | 资阳市精工机械有限公司 | Quick-changing chuck |
| CN107792794A (en) * | 2017-11-01 | 2018-03-13 | 浙江省建设机械集团有限公司 | Novel crane boom lower chord connection structure |
| CN112239160A (en) * | 2020-11-04 | 2021-01-19 | 常德市荣程机械有限公司 | Node connection structure of tower machine forearm |
| CN112239160B (en) * | 2020-11-04 | 2023-08-04 | 常德市荣程机械有限公司 | Node connection structure of tower machine forearm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140409 Termination date: 20141024 |
|
| EXPY | Termination of patent right or utility model |