JPH0286992U - - Google Patents
Info
- Publication number
- JPH0286992U JPH0286992U JP16549788U JP16549788U JPH0286992U JP H0286992 U JPH0286992 U JP H0286992U JP 16549788 U JP16549788 U JP 16549788U JP 16549788 U JP16549788 U JP 16549788U JP H0286992 U JPH0286992 U JP H0286992U
- Authority
- JP
- Japan
- Prior art keywords
- tower
- strut
- tip
- jib
- post
- 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.)
- Pending
Links
Landscapes
- Jib Cranes (AREA)
Description
第１図は本考案の一実施例の側面図、第２図は
第１図の流体圧シリンダのピストンロツドを前進
させた状態を示す図、第３図は第１図のタワージ
ブをタワーポストと平行に折りたたんだ状態を示
す図、第４図は従来のタワークレーンの側面図、
第５図は第４図のタワージブを折りたたむ状態を
示す図、第６図イ，ロは第４図のタワーポストを
傾けてタワージブを折りたたむ手順を示す図であ
る。
図中、１はタワークレーン、２はタワーポスト
、３はタワージブ、５は第１のストラツト、６は
第２のストラツト、７はジブペンダントロープ、
８はジブストラツトペンダントロープ、１４，１
５はシーブ、１６はジブ起伏用ワイヤロープ、１
７はワイヤドラム、１９は流体圧シリンダ、２０
はピストンロツドを示す。
Fig. 1 is a side view of one embodiment of the present invention, Fig. 2 is a view showing the piston rod of the hydraulic cylinder shown in Fig. 1 in an advanced state, and Fig. 3 shows the tower jib shown in Fig. 1 parallel to the tower post. Figure 4 is a side view of a conventional tower crane.
5 is a diagram showing the state in which the tower jib of FIG. 4 is folded, and FIGS. 6A and 6B are diagrams showing the procedure for folding the tower jib by tilting the tower post of FIG. 4. In the figure, 1 is a tower crane, 2 is a tower post, 3 is a tower jib, 5 is a first strut, 6 is a second strut, 7 is a jib pendant rope,
8 is jib strut pendant rope, 14,1
5 is a sheave, 16 is a wire rope for jib hoisting, 1
7 is a wire drum, 19 is a fluid pressure cylinder, 20
indicates the piston rod.
Claims (1)
を枢着し、タワーポストの頂上部に第１のストラ
ツトの基部を枢着し、タワーポストの頂上後縁部
に第２のストラツトの基部を枢着し、タワージブ
の先端部と第１のストラツトの先端部が一定の距
離を保ち得、且つ第１のストラツトの先端部と第
２のストラツトの先端部とが近接離反し得るよう
に形成したタワークレーンにおいて、第２のスト
ラツトの先端部とタワーポストの所要の位置とを
長さ可変な部材を介して連結したことを特徴とす
るタワークレーンのジブ折りたたみ機構。 The base of the tower jib is pivotally connected to the leading edge of the top of the tower post, the base of the first strut is pivotally connected to the top of the tower post, and the base of the second strut is pivotally connected to the trailing edge of the top of the tower post. A tower crane formed such that the tip of the tower jib and the tip of the first strut can maintain a certain distance, and the tip of the first strut and the tip of the second strut can move toward each other and move away from each other. A jib folding mechanism for a tower crane, characterized in that the tip of the second strut and a required position of the tower post are connected via a length-variable member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16549788U JPH0286992U (en) | 1988-12-21 | 1988-12-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16549788U JPH0286992U (en) | 1988-12-21 | 1988-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0286992U true JPH0286992U (en) | 1990-07-10 |
Family
ID=31452036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16549788U Pending JPH0286992U (en) | 1988-12-21 | 1988-12-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0286992U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008074498A (en) * | 2006-09-18 | 2008-04-03 | Kitagawa Iron Works Co Ltd | Jib crane |
-
1988
- 1988-12-21 JP JP16549788U patent/JPH0286992U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008074498A (en) * | 2006-09-18 | 2008-04-03 | Kitagawa Iron Works Co Ltd | Jib crane |
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