CN204353734U - Derrick crane pin removal - Google Patents
Derrick crane pin removal Download PDFInfo
- Publication number
- CN204353734U CN204353734U CN201420827826.0U CN201420827826U CN204353734U CN 204353734 U CN204353734 U CN 204353734U CN 201420827826 U CN201420827826 U CN 201420827826U CN 204353734 U CN204353734 U CN 204353734U
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- CN
- China
- Prior art keywords
- pin
- bearing pin
- oil cylinder
- jib
- derrick crane
- 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.)
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Abstract
The utility model discloses a kind of derrick crane pin removal, is the instrument of tower machine installation and removal, for the bearing pin of jib, standard knot is headed into or extracted.Form primarily of oil cylinder and piston rod, oil cylinder is connected on jib by locating shaft, has contiguous block in piston rod front end, and contiguous block is stuck on the attachment screw with pinned connection.The utility model solves the difficult problem that major diameter bearing pin sledgehammer can not get through, and also greatly reduces the labour intensity installing minor diameter bearing pin, reduces the danger of work high above the ground, improve the installation rate of tower machine.
Description
Technical field
The utility model relates to the auxiliary equipment of derrick crane, is specifically related to the instrument that a kind of tower machine installing/dismounting uses.
Background technology
At present, the installation that the parts such as jib, standard knot on domestic produced medium and small tonnage derrick crane connect bearing pin used is all almost squeeze into sledgehammer, and during installation, not only efficiency is low, and adds the labour intensity of workman greatly, owing to being work high above the ground, some station is also more dangerous.The nearly more than ten years are because national economic development is in the urgent need to the tower machine of hoisting moment super large, bring the significantly increase of connecting pin shaft diameter, the diameter that the arm root of the STT2200 flat-top tower crane that we develop recently connects bearing pin used reaches φ 220mm, more cannot squeeze into sledgehammer.
Summary of the invention
The purpose of this utility model is to provide a kind of derrick crane pin removal, heads into for bearing pin jib, standard knot connected or extracts, with the difficult problem solving prior art arm frame of tower crane, standard knot is installed and dismantled.
The technical solution adopted in the utility model is: derrick crane pin removal is formed primarily of oil cylinder and piston rod, and oil cylinder is connected on jib by locating shaft, has contiguous block in piston rod front end, and contiguous block is stuck on the attachment screw with pinned connection.
When needing to head into bearing pin, by complete for piston rod retraction oil cylinder, insert after jib and oil cylinder in stomidium with locating shaft, operating cyloinder top reversal valve, heads into bearing pin after alignment pin holes simultaneously.When bearing pin length is more than 300mm, can by piston rod again retraction oil cylinder, locating shaft is extracted and alters forward a hole and again locating shaft is inserted, reversing valve operated bearing pin to be headed into.When extracting bearing pin, operate contrary with aforementioned.
The utility model solves the difficult problem that major diameter bearing pin sledgehammer can not get through, and also greatly reduces the labour intensity installing minor diameter bearing pin, reduces the danger of work high above the ground, improve the installation rate of tower machine.
Accompanying drawing explanation
Fig. 1, Fig. 2 are structural representation of the present utility model;
Fig. 1 is the schematic diagram of pin removal when bearing pin being headed into parts;
Fig. 2 is the schematic diagram of bearing pin when parts are outer.
Detailed description of the invention
Derrick crane pin removal is formed primarily of the piston 4 in oil cylinder 5 and oil cylinder 5, has earrings at oil cylinder 5 tail end, and locating shaft 6 is fixed on jib 7 through after the earrings of oil cylinder 5 tail end.Piston rod front end is fixed with contiguous block 3, and have jaw above at contiguous block 3, the head of a nail of attachment screw 2 blocks by this jaw, and attachment screw 2 is screwed in bearing pin 1 outer end.Screw to be got out in advance on bearing pin 1 during operation, attachment screw 2 is first screwed in bearing pin 1, the head of a nail be stayed outside, and leave the gap of inserting jaw.For adapting to the operation compared with long pin shaft, jib 7 is provided with two place's pin-and-holes, and the cross section of this two places pin-and-hole and locating shaft 6 adapts, so that pin removal can play on jib.Jib 7 is originally the web member on jib, has not only played web member effect through transformation (holing on channel-section steel) but also has played the effect of fixing pin removal.
Claims (4)
1. a derrick crane pin removal, it is characterized in that: form primarily of oil cylinder (5) and piston rod (4), oil cylinder (5) is connected on jib (7) by locating shaft (6), have contiguous block (3) in piston rod (4) front end, contiguous block (3) is stuck on the attachment screw (2) that is connected with bearing pin (1).
2. derrick crane pin removal according to claim 1, is characterized in that: have earrings at oil cylinder (5) tail end, is fixed on jib (7) after the earrings of locating shaft (6) through oil cylinder (5) tail end.
3. derrick crane pin removal according to claim 1, is characterized in that: have jaw above at contiguous block (3), the head of a nail of attachment screw (2) blocks by this jaw, and attachment screw (2) is screwed in bearing pin (1) outer end.
4. derrick crane pin removal according to claim 1, is characterized in that: on jib (7), be provided with two place's pin-and-holes, and the cross section of this two places pin-and-hole and locating shaft (6) adapts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420827826.0U CN204353734U (en) | 2014-12-24 | 2014-12-24 | Derrick crane pin removal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420827826.0U CN204353734U (en) | 2014-12-24 | 2014-12-24 | Derrick crane pin removal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204353734U true CN204353734U (en) | 2015-05-27 |
Family
ID=53255230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420827826.0U Active CN204353734U (en) | 2014-12-24 | 2014-12-24 | Derrick crane pin removal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204353734U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108000426A (en) * | 2017-12-12 | 2018-05-08 | 佛山市鼎翘五金有限公司 | A kind of auxiliary device of the installation of standard knot connecting pin and dismounting |
-
2014
- 2014-12-24 CN CN201420827826.0U patent/CN204353734U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108000426A (en) * | 2017-12-12 | 2018-05-08 | 佛山市鼎翘五金有限公司 | A kind of auxiliary device of the installation of standard knot connecting pin and dismounting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |