CN204434135U - The new structure that flat-top tower crane crane arm connects - Google Patents
The new structure that flat-top tower crane crane arm connects Download PDFInfo
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- CN204434135U CN204434135U CN201420815290.0U CN201420815290U CN204434135U CN 204434135 U CN204434135 U CN 204434135U CN 201420815290 U CN201420815290 U CN 201420815290U CN 204434135 U CN204434135 U CN 204434135U
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Abstract
The utility model discloses the new structure that a kind of flat-top tower crane crane arm connects, in the triangular-section of flat-top tower crane cargo boom joint, the joint of crane arm forearm joint (1) top boom adopts circular hole formula otic placode, crane arm postbrachium joint (2) top boom joint adopts U-shaped cellular type otic placode, is realized the connection of crane arm forearm joint and crane arm postbrachium joint by the connection between two otic placodes; Lower boom adopts the docking of locating dowel pin joint location, and is bolted connection.Version of the present utility model is simple, and production and processing is convenient, improves the efficiency of production and processing.During installation, first circler hole auricle is docked with U-shaped hole otic placode, insert bearing pin again, and insert in the process of bearing pin, only crane arm postbrachium joint away from arm root place need be raised up, bearing pin is coordinated with forearm pitch circle hole, bearing pin passes multiple circular hole without the need to troublesome, only need, through an otic placode circular hole, insert convenient and swift, easy to operate, use also very convenient; It is also convenience like this during dismounting.
Description
Technical field
The utility model relates to a kind of connection structure of flat-top tower crane crane arm, and the new structure of specifically a kind of flat-top tower crane crane arm connection, belongs to flat-top tower crane crane arm technical field.
Background technology
The cargo boom of existing flat-top tower crane saves the pin shaft connection structure that the jointing that winds up is the docking of otic placode circular hole, this connection structure be top boom two circler hole auricles in crane arm triangular form truss structure with pinned connection to together with, lower boom joint adopts locating dowel pin docking, and be bolted connection, specifically as shown in Figure 1 to Figure 3, bearing pin I5 saves through the forearm joint otic placode 3 be welded on crane arm forearm joint 1 and the postbrachium be welded on crane arm rear wall joint 2 connection that otic placode 4 realizes crane arm arm before and after joint; This version of cargo boom being saved two circler hole auricles connections is very safe and reliable.But in actual production installation process, there are the following problems:
1. processing and manufacturing accuracy requirement is high, cost is high: connect because this structure utilizes bearing pin to pass circular hole, so need in the pre-connection to process the bearing pin of two circler hole auricle joints and connection otic placode joint, and position, hole size is each other directly connected to the steadiness that whether can realize connecting and connecting, if the excessive clearance on bearing pin and otic placode between circular hole, the safe reliability of version will be affected, therefore it is high to the pin shaft hole requirement on machining accuracy of bearing pin and two otic placode joints, manufacture adds difficulty, too increases tooling cost;
2. installing/dismounting inconvenience: during installation, first to the connecting bore position of two circler hole auricle joints, then will connect through two otic placodes with bearing pin successively; Also again bearing pin is extracted after otic placode will being aimed at during dismounting; And bearing pin precision is high, bearing pin is that small―gap suture coordinates with coordinating of hole, and the connection between cargo boom joint is installed after being sling by crane again, and making to install difficulty increases, and during dismounting, also more complicated bothers.
Summary of the invention
For above-mentioned prior art Problems existing, the new structure that the utility model provides a kind of flat-top tower crane crane arm to connect, version is simple, and production and processing is convenient, can reduce costs, and improves production and processing efficiency, and easy installation and removal is quick, easy to operate.
To achieve these goals, the new structure that a kind of flat-top tower crane crane arm that the utility model adopts connects, in the triangular-section of flat-top tower crane cargo boom joint, the joint of the top boom of crane arm forearm joint adopts circular hole formula otic placode, the top boom joint of crane arm postbrachium joint adopts U-shaped cellular type otic placode, is realized the connection of crane arm forearm joint and crane arm postbrachium joint by the connection between two otic placodes; Lower boom adopts the docking of locating dowel pin joint location, and is bolted connection.
The top boom of described crane arm forearm joint is fixed with circler hole auricle, and the top boom of described crane arm postbrachium joint is fixed with U-shaped hole otic placode, is connected between circler hole auricle with U-shaped hole otic placode by bearing pin II.
Also comprise plate, described inserting board U-shaped hole otic placode on crane arm postbrachium joint is remained silent between end and crane arm forearm save.
Described plate saves with crane arm forearm and is connected.
Described plate is connected by chain between saving with crane arm forearm.
Compared with prior art, in the utility model, cargo boom joint top boom joint adopts circler hole auricle and U-shaped hole otic placode by the form of pinned connection, its version is simple, production and processing is convenient, connect owing to adopting U-shaped hole otic placode, and the precision prescribed that U-shaped hole is connected with circler hole auricle is low, therefore decrease the hole count coordinated with bearing pin, the right alignment of the circler hole auricle joint also not needing accurate to dimension requirement higher and higher two circler hole auricles of accuracy requirement, save the work in production process and trouble, improve the efficiency of production and processing, reduce cost.During installation, first circler hole auricle is docked with U-shaped hole otic placode, then insert the connection that bearing pin just can complete top boom, then by the docking of lower boom locating dowel pin location, then with bolt tightening.And insert in the process of bearing pin, only crane arm postbrachium joint away from arm root place need be raised up, bearing pin is coordinated with crane arm forearm pitch circle hole, namely bearing pin passes multiple circular hole without the need to troublesome, only need through single joint otic placode circular hole, insert convenient and swift, easy to operate, use also very convenient; It is also simple and fast like this during dismounting.In addition, plate can be inserted between crane arm postbrachium joint fitting end (i.e. crane arm postbrachium joint go up U-shaped hole otic placode to remain silent end) and crane arm forearm save after insertion bearing pin, when preventing crane arm from unloading, the concussion of arm joint, punching bearing pin, further increases the service life of connection reliability and bearing pin.
Accompanying drawing explanation
Fig. 1 is the structural representation that existing flat-top tower crane cargo boom joint connects;
Fig. 2 is the right elevation of Fig. 1;
Fig. 3 is the structural representation of existing forearm joint otic placode and postbrachium joint otic placode;
Fig. 4 is structural representation of the present utility model;
Fig. 5 be in Fig. 4 A to schematic diagram;
Fig. 6 is the structural representation of plate;
Fig. 7 is the structural representation of the utility model circler hole auricle and U-shaped hole otic placode.
In figure: 1, crane arm forearm joint, 2, crane arm postbrachium joint, 3, forearm joint otic placode, 4, postbrachium joint otic placode, 5, bearing pin I, 6, circler hole auricle, 7, U-shaped hole otic placode, 8, bearing pin II, 9, plate.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figures 4 to 7, the new structure that a kind of flat-top tower crane crane arm connects, in the triangular-section of flat-top tower crane cargo boom joint, the joint of the top boom of crane arm forearm joint 1 adopts circular hole formula otic placode, the top boom joint of crane arm postbrachium joint 2 adopts U-shaped cellular type otic placode, is realized the connection of crane arm forearm joint 1 and crane arm postbrachium joint 2 by the connection between two otic placodes; Lower boom adopts the docking of locating dowel pin joint location, and is bolted connection.
The top boom of described crane arm forearm joint 1 is fixed with circler hole auricle 6, and the top boom of described crane arm postbrachium joint 2 is fixed with U-shaped hole otic placode 7, is connected between circler hole auricle 6 with U-shaped hole otic placode 7 by bearing pin II8.
During installation, as shown in Figure 4, first circler hole auricle 6 can be docked with U-shaped hole otic placode 7, again by connection that bearing pin II8 can realize between crane arm arm before and after joint top boom through circler hole auricle 6 and U-shaped hole otic placode 7, in the process inserting bearing pin II8, crane only need be utilized to be raised up at crane arm postbrachium joint away from arm root place, insert bearing pin II8 again after the circular hole making bearing pin II8 and crane arm forearm save circler hole auricle 6 on 1 coordinates just can, utilize the gravity that cargo boom saves, bearing pin II8 moves to top inside U-shaped hole otic placode 7 automatically, achieves the firm connection of arm before and after joint top boom; Top boom is connected, then by the docking of lower boom locating dowel pin location, then with bolt tightening.
Consider arm joint concussion meeting punching bearing pin II8 in crane arm working process, plate 9 can be inserted by A in Fig. 4 to shown position, namely on crane arm postbrachium joint 2 U-shaped hole otic placode 7 remain silent end and crane arm forearm save 1 between insert plate 9, during without plate 9, bearing pin II8 is the point of connection of arm before and after internode, during work, bearing pin II8 is as stress point, bear punching shears all when arm joint shakes, service life is short, affects the steadiness that arm before and after internode connects; And the insertion of plate 9 can realize the seamless connectivity of arm before and after joint, arm before and after is saved in arm joint concussion process stressed together, decrease the punching shear that bearing pin II8 bears, extend the service life of bearing pin II8 and the reliability of connection.
In addition, described plate 9 and crane arm forearm can be saved 1 and be connected, the loss of plate 9 can be avoided, and then ensure the reliability and stability of connection.And described plate 9 can be connected by chain between saving 1 with crane arm forearm, easy to connect, simple to operate.
From said structure, the utility model is in the triangular-section that flat-top tower crane cargo boom saves, and the joint of the top boom of forearm joint adopts otic placode circular hole formula, and the joint that winds up of postbrachium joint adopts U-shaped cellular type otic placode; Lower boom adopts the docking of locating dowel pin joint location, and is bolted connection; When installing and using, the joint that top boom only has forearm to save is that circular hole connects, and squeezes into bearing pin for location, then can insert plate between postbrachium saves fitting end and forearm saves, when preventing crane arm from unloading, and the concussion of arm joint, punching bearing pin; Then lower boom locating dowel pin joint location is docked, then hold-down bolt nut, whole installation process is simple and convenient, and this type of attachment is safe and reliable, installing/dismounting is simple.Simultaneously, its version is simple, production and processing is convenient, owing to adopting U-shaped hole otic placode to connect, and the precision prescribed that U-shaped hole is connected with circler hole auricle is low, therefore decreases the hole count coordinated with bearing pin, the right alignment of the circler hole auricle joint also not needing accurate to dimension requirement higher and higher two circler hole auricles of accuracy requirement, save the work in production process and trouble, improve the efficiency of production and processing, reduce cost.In addition, U-shaped hole otic placode coordinates with plate, can further improve safe reliability, and keeps durable use, and it is efficiently convenient to dismantle.
For the installation of tower crane, in-site installation operation is subject to the restriction of auxiliary erecting crane tool tonnage, most in-site installation is the mounting means adopting overhead connection crane arm, this form elevator boom connection structure can be good at improving the efficiency of installing in high-altitude, avoid the installation difficulty caused due to the biased difference in hole when overhead connection crane arm, improve once mounting success ratio, reduce the danger of aloft work simultaneously, solve the technical barrier existed at present.
Claims (5)
1. the new structure of a flat-top tower crane crane arm connection, it is characterized in that, in the triangular-section of flat-top tower crane cargo boom joint, the joint of the top boom of crane arm forearm joint (1) adopts circular hole formula otic placode, the top boom joint of crane arm postbrachium joint (2) adopts U-shaped cellular type otic placode, is realized the connection of crane arm forearm joint (1) and crane arm postbrachium joint (2) by the connection between two otic placodes; Lower boom adopts the docking of locating dowel pin joint location, and is bolted connection.
2. the new structure of a kind of flat-top tower crane crane arm connection according to claim 1, it is characterized in that, the top boom of described crane arm forearm joint (1) is fixed with circler hole auricle (6), the top boom of described crane arm postbrachium joint (2) is fixed with U-shaped hole otic placode (7), is connected between circler hole auricle (6) with U-shaped hole otic placode (7) by bearing pin II (8).
3. the new structure of a kind of flat-top tower crane crane arm connection according to claim 1 and 2, it is characterized in that, also comprise plate (9), described plate (9) is inserted in remain silent end and crane arm forearm of upper U-shaped hole otic placode (7) of crane arm postbrachium joint (2) and saves between (1).
4. the new structure of a kind of flat-top tower crane crane arm connection according to claim 3, it is characterized in that, described plate (9) saves (1) and is connected with crane arm forearm.
5. the new structure of a kind of flat-top tower crane crane arm connection according to claim 4, it is characterized in that, described plate (9) is saved with crane arm forearm between (1) and is connected by chain.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420815290.0U CN204434135U (en) | 2014-12-19 | 2014-12-19 | The new structure that flat-top tower crane crane arm connects |
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| CN201420815290.0U CN204434135U (en) | 2014-12-19 | 2014-12-19 | The new structure that flat-top tower crane crane arm connects |
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| CN204434135U true CN204434135U (en) | 2015-07-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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2014
- 2014-12-19 CN CN201420815290.0U patent/CN204434135U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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