CN2934177Y - Three-sectional drawbar telescoping device - Google Patents
Three-sectional drawbar telescoping device Download PDFInfo
- Publication number
- CN2934177Y CN2934177Y CN 200620043080 CN200620043080U CN2934177Y CN 2934177 Y CN2934177 Y CN 2934177Y CN 200620043080 CN200620043080 CN 200620043080 CN 200620043080 U CN200620043080 U CN 200620043080U CN 2934177 Y CN2934177 Y CN 2934177Y
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- CN
- China
- Prior art keywords
- pull bar
- lower link
- link
- pin
- hole
- 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.)
- Expired - Fee Related
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Abstract
A tri-section telescopic device, includes a U-shape lower link with a bracing piece, the U-shape middle link (which can slide within the lower link) with the bracing piece, and a plate-shape upper link (which can slide within the middle link) with the bracing piece; wherein: the top end of the upper link and the bottom end of the lower link are provided with connection pin-holes , and the upper link, the middle link and the lower link all have the pin holes with which the extension height can be adjusted and the pins fitting the same holes prepared. The utility model is mainly applied to the crawler crane's A-frame.
Description
Technical field
The utility model relates to crawler crane, and particularly crawler crane is regulated three joint pull bar retractor devices of A type frame height.
Background technology
Crawler crane is one of important branch of crane, and the effect of A type rack device in the crawler crane complete machine mainly contains: the A type was erected supporting role when the first was worked at car load, keeps the car load balance, and it two is to carry out from loading and unloading counterweight.When decorating counterweight certainly, require A type frame can change height freely, after the rise, keep the balance of car load by pull bar, the pull bar of prior art adopts the joint bearing pin to connect, in working order down, the pull bar group needs one save and adopt bearing pin to fix, and installation inconvenience, labour intensity are big, when contraction is gone back or is allocated heavily, pull bar is contracted in together, takies than large space, and also very not attractive in appearance.
Summary of the invention
Technical problem to be solved in the utility model is to install inconvenient in order to overcome existing pull bar, the problem that labour intensity is big, for solving the problems of the technologies described above, the technical scheme that the utility model adopted provides a kind of three joint pull bar retractor devices, it comprises the U-shaped lower link that has strut member, have pull bar in the U-shaped that can in lower link, slide of strut member, the tabular top rod that can in middle pull bar, slide that has strut member, wherein: the top of top rod is provided with the bottom of lower link and is connected pin-and-hole and top rod, be provided with the pin-and-hole of adjustable and retractable height and the bearing pin that is complementary with pin-and-hole on middle pull bar and the lower link.
The beneficial effects of the utility model are: because wherein middle pull bar and lower link adopt U-shaped pull bar member, top rod adopts tabular pull bar member, and integration design, only need to stretch and shrink pull bar, with the fixing corresponding height pin-and-hole of regulating of bearing pin, just the height of scalable A type frame is therefore convenient to operation, simultaneously three joint pull bars be contracted in a time-out take up room less, and good looking appearance.
Description of drawings
Fig. 1 is the block diagram of an embodiment of the utility model;
Fig. 2 is the structure cutaway view after three joint pull bar retractor devices shown in Figure 1 shrink.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
Among the embodiment illustrated in figures 1 and 2, be provided with two adjustable and retractable height pin-and-holes 4 on top rod 1, middle pull bar 2 and the lower link 3.By Fig. 1 and Fig. 2 as can be known, this three joints pull bar retractor device comprises the U-shaped lower link 3 that has first strut member 501 and second strut member 502, have pull bar 2 in the U-shaped that can in lower link, slide of the 3rd strut member 503, the tabular top rod 1 that can in middle pull bar, slide that has the 4th strut member 504, wherein: the top of top rod is provided with first and connects pin-and-hole 601, the bottom of lower link is provided with second and connects pin-and-hole 602, and is provided with the pin-and-hole 7 of two adjustable and retractable height and the bearing pin 8 that is complementary with pin-and-hole on top rod, middle pull bar and the lower link.
First of the top rod 1 top connection pin-and-hole 601 links to each other with A type frame front support stand by bearing pin in the practical application, and second of lower link 3 bottoms connect pin-and-hole 602 and link to each other with turntable by bearing pin.When thereby needs are regulated three joint pull bar retractor devices adjusting A type frame height, as long as use bearing pin 8 fixing corresponding adjusting height pin-and-hole 7, the just height of scalable A type frame.Wherein the strut member on the pull bar plays cylinder lever connecting rod and prevents that pull bar disconnects.
Claims (2)
1. one kind three is saved the pull bar retractor device, it is characterized in that comprising the U-shaped lower link that has strut member, have pull bar in the U-shaped that can in lower link, slide of strut member, the tabular top rod that can in middle pull bar, slide that has strut member, wherein: the top of top rod is provided with the bottom of lower link and is connected pin-and-hole, and is provided with the pin-and-hole of adjustable and retractable height and the bearing pin that is complementary with pin-and-hole on top rod, middle pull bar and the lower link.
2. three joint pull bar retractor devices as claimed in claim 1 is characterized in that being provided with on top rod, middle pull bar and the lower link two adjustable and retractable height pin-and-holes that are complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620043080 CN2934177Y (en) | 2006-06-23 | 2006-06-23 | Three-sectional drawbar telescoping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620043080 CN2934177Y (en) | 2006-06-23 | 2006-06-23 | Three-sectional drawbar telescoping device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2934177Y true CN2934177Y (en) | 2007-08-15 |
Family
ID=38350864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620043080 Expired - Fee Related CN2934177Y (en) | 2006-06-23 | 2006-06-23 | Three-sectional drawbar telescoping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2934177Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267667A (en) * | 2010-06-04 | 2011-12-07 | 上海三一科技有限公司 | Folding pulling plate device of A-shaped rack of crane |
-
2006
- 2006-06-23 CN CN 200620043080 patent/CN2934177Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102267667A (en) * | 2010-06-04 | 2011-12-07 | 上海三一科技有限公司 | Folding pulling plate device of A-shaped rack of crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070815 Termination date: 20150623 |
|
| EXPY | Termination of patent right or utility model |