JPH0475891U - - Google Patents
Info
- Publication number
- JPH0475891U JPH0475891U JP11856890U JP11856890U JPH0475891U JP H0475891 U JPH0475891 U JP H0475891U JP 11856890 U JP11856890 U JP 11856890U JP 11856890 U JP11856890 U JP 11856890U JP H0475891 U JPH0475891 U JP H0475891U
- Authority
- JP
- Japan
- Prior art keywords
- wedge
- shaped guide
- side end
- wall portion
- receiving block
- 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.)
- Granted
Links
- 238000003466 welding Methods 0.000 claims 1
Landscapes
- Jib Cranes (AREA)
- Forklifts And Lifting Vehicles (AREA)
Description
第１図は本考案一実施例の縦断正面図（第２図
のＡ−Ａ断面図）、第２図は第１図のＢ矢視図、
第３図は第２図のＣ−Ｃ断面図、第４図は従来型
の伸縮ブーム要部の側面図、第５図及び第６図は
夫々第４図のＤ−Ｄ断面図及びＥ−Ｅ断面図であ
る。
１……内ブーム筒、１ａ……外ブーム筒の底板
、２……外ブーム筒、２ｂ……外ブーム筒の側壁
板、３……受ブロツク、３ａ……受ブロツクの側
端溝壁部分、４……楔状ガイド、５……溝、６…
…梁板、７……押ボルト、８……引きボルト。
Fig. 1 is a longitudinal sectional front view of an embodiment of the present invention (A-A sectional view in Fig. 2), Fig. 2 is a view taken along arrow B in Fig. 1,
Figure 3 is a sectional view taken along the line CC in Figure 2, Figure 4 is a side view of the main parts of a conventional telescopic boom, and Figures 5 and 6 are sectional views taken along the line DD and E- in Figure 4, respectively. It is an E sectional view. 1... Inner boom tube, 1a... Bottom plate of outer boom tube, 2... Outer boom tube, 2b... Side wall plate of outer boom tube, 3... Receiving block, 3a... Side end groove wall portion of receiving block. , 4... wedge-shaped guide, 5... groove, 6...
... Beam plate, 7... Push bolt, 8... Pull bolt.
Claims (1)
右対称構成の楔状ガイドが夫々嵌装される上下方
向の溝を、外ブーム筒２の先端部両側の開口部に
夫々溶着した受ブロツクの内壁に凹設するに際し
、各受ブロツク３の側端溝壁部分３ａを、これに
摺接して下降する楔状ガイド４が次第に外ブーム
筒内に押出される勾配を持つ上細りの楔状に構成
して、該側端溝壁部分に摺接した楔状ガイド４を
、その内ブーム筒への対向面が外ブーム筒の側壁
板２ｂと平行になる下細りの楔状に構成し、且つ
各受ブロツクの前記溝５上に固着した梁板６に、
楔状ガイド頂面の押下げ可能な前後一対の押ボル
ト７を前記側端溝壁部分に沿う楔状ガイドの摺動
方向と平行にねじ込み、該両押ボルト間において
これと平行に前記梁板に挿通した引きボルト８を
該楔状ガイドにねじ込んだことを特徴とするブー
ムの伸縮ガイド装置。 A receiving block is formed by welding vertical grooves into which wedge-shaped guides with a left-right symmetrical structure that can slide into both sides of the bottom plate of the inner boom tube 1 are respectively welded to openings on both sides of the tip of the outer boom tube 2. When recessed in the inner wall, the side end groove wall portion 3a of each receiving block 3 is configured in the shape of an upwardly tapered wedge with a slope such that the wedge-shaped guide 4 that descends in sliding contact with the receiving block 3 is gradually pushed out into the outer boom cylinder. The wedge-shaped guide 4 that is in sliding contact with the side end groove wall portion is formed into a tapered wedge shape whose surface facing the inner boom tube is parallel to the side wall plate 2b of the outer boom tube. On the beam plate 6 fixed on the groove 5,
A pair of front and rear push bolts 7 that can be pushed down on the top surface of the wedge-shaped guide are screwed in parallel to the sliding direction of the wedge-shaped guide along the side end groove wall portion, and inserted into the beam plate parallel to this between the two push bolts. A telescopic guide device for a boom, characterized in that a pull bolt 8 is screwed into the wedge-shaped guide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11856890U JP2523331Y2 (en) | 1990-11-14 | 1990-11-14 | Boom telescopic guide device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11856890U JP2523331Y2 (en) | 1990-11-14 | 1990-11-14 | Boom telescopic guide device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0475891U true JPH0475891U (en) | 1992-07-02 |
| JP2523331Y2 JP2523331Y2 (en) | 1997-01-22 |
Family
ID=31866511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11856890U Expired - Fee Related JP2523331Y2 (en) | 1990-11-14 | 1990-11-14 | Boom telescopic guide device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2523331Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006219301A (en) * | 2005-02-10 | 2006-08-24 | Grove Us Llc | Self-adjustable slide block for freely expandable crane jib |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4912783B2 (en) * | 2006-07-31 | 2012-04-11 | 古河ユニック株式会社 | Boom sliding mechanism |
-
1990
- 1990-11-14 JP JP11856890U patent/JP2523331Y2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006219301A (en) * | 2005-02-10 | 2006-08-24 | Grove Us Llc | Self-adjustable slide block for freely expandable crane jib |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2523331Y2 (en) | 1997-01-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |