JPH0374586U - - Google Patents
Info
- Publication number
- JPH0374586U JPH0374586U JP13492389U JP13492389U JPH0374586U JP H0374586 U JPH0374586 U JP H0374586U JP 13492389 U JP13492389 U JP 13492389U JP 13492389 U JP13492389 U JP 13492389U JP H0374586 U JPH0374586 U JP H0374586U
- Authority
- JP
- Japan
- Prior art keywords
- pipe line
- hydraulic cylinder
- diameter hydraulic
- oil chamber
- arm
- 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
- 238000001125 extrusion Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Jib Cranes (AREA)
Description
第１図は本考案を採用したトラツククレーンの
全体側面図、第２図はカウンタウエイト着脱装置
部分の背面図、第３図乃至第４図は同側面図、第
５図は本考案に係る油圧回路図である。
１……上部旋回体、２……下部走行体、４……
カウンタウエイト、５……上部アーム、７……大
口径油圧シリンダ、１０……下部アーム、１２…
…小口径油圧シリンダ、１５……上部ピン、１６
……下部ピン、１７……油圧ポンプ、１８……コ
ントロールバルブ、１９……パイロツト式逆止弁
、２６……シーケンス弁、２７……逆止弁。
Fig. 1 is an overall side view of a truck crane adopting the present invention, Fig. 2 is a rear view of the counterweight attaching/detaching device, Figs. 3 and 4 are side views of the same, and Fig. 5 is a hydraulic pressure according to the present invention. It is a circuit diagram. 1... Upper rotating body, 2... Lower traveling body, 4...
Counterweight, 5... Upper arm, 7... Large diameter hydraulic cylinder, 10... Lower arm, 12...
...Small diameter hydraulic cylinder, 15...Top pin, 16
... lower pin, 17 ... hydraulic pump, 18 ... control valve, 19 ... pilot type check valve, 26 ... sequence valve, 27 ... check valve.
Claims (1)
可能な上部アーム５と下部アーム１０をそれぞれ
枢着すると共に、上部旋回体１の後端下部と上部
アーム５の間に大口径油圧シリンダ７を、また上
部旋回体１の後端上部と下部アーム１０の間に小
口径油圧シリンダ１２をそれぞれ配設し、一方、
カウンタウエイト４に、前記上部アーム５の先端
鈎部５ａと係合する上部ピン１５及び下部アーム
１０の先端鈎部１０ａと係合する下部ピン１６を
設け、前記大口径油圧シリンダ７のロツド押出側
油室７ａとコントロールバルブ１８とを管路２１
で連通し、該管路２１からの分岐管路２２を前記
小口径油圧シリンダ１２のロツド押出側油室１２
ａに連通すると共に、前記大口径油圧シリンダ７
のロツド引込側油室７ｂとコントロールバルブ１
８とを管路２４で連通し、該管路２４からの分岐
管路２５をシーケンスバルブ２６を介して前記小
口径油圧シリンダ１２のロツド引込側油室１２ｂ
に連通したことを特徴とする移動式クレーンのカ
ウンタウエイト着脱装置。 An upper arm 5 and a lower arm 10 that are rotatable in the vertical direction are respectively pivotally connected to the upper and lower rear ends of the upper revolving body 1, and a large-diameter hydraulic pressure is connected between the lower rear end of the upper revolving body 1 and the upper arm 5. A cylinder 7 and a small-diameter hydraulic cylinder 12 are respectively disposed between the rear end upper part of the upper rotating body 1 and the lower arm 10, and on the other hand,
The counterweight 4 is provided with an upper pin 15 that engages with the hooked end 5a of the upper arm 5 and a lower pin 16 that engages with the hooked end 10a of the lower arm 10, and the rod extrusion side of the large diameter hydraulic cylinder 7. A pipe line 21 connects the oil chamber 7a and the control valve 18.
A branch pipe line 22 from the pipe line 21 is connected to the rod extrusion side oil chamber 12 of the small diameter hydraulic cylinder 12.
a, and the large diameter hydraulic cylinder 7
Rod retraction side oil chamber 7b and control valve 1
8 through a pipe line 24, and a branch pipe line 25 from the pipe line 24 is connected to the rod retraction side oil chamber 12b of the small diameter hydraulic cylinder 12 via a sequence valve 26.
A counterweight attaching/detaching device for a mobile crane, characterized in that it communicates with the counterweight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13492389U JPH078550Y2 (en) | 1989-11-22 | 1989-11-22 | Counterweight attachment / detachment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13492389U JPH078550Y2 (en) | 1989-11-22 | 1989-11-22 | Counterweight attachment / detachment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0374586U true JPH0374586U (en) | 1991-07-26 |
| JPH078550Y2 JPH078550Y2 (en) | 1995-03-01 |
Family
ID=31682224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13492389U Expired - Lifetime JPH078550Y2 (en) | 1989-11-22 | 1989-11-22 | Counterweight attachment / detachment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH078550Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4104202B2 (en) * | 1998-03-17 | 2008-06-18 | 株式会社タダノ | Counterweight desorption device |
-
1989
- 1989-11-22 JP JP13492389U patent/JPH078550Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH078550Y2 (en) | 1995-03-01 |