CN202880724U - Movable-type propeller strut mechanism for jib-type crane - Google Patents
Movable-type propeller strut mechanism for jib-type crane Download PDFInfo
- Publication number
- CN202880724U CN202880724U CN 201220595289 CN201220595289U CN202880724U CN 202880724 U CN202880724 U CN 202880724U CN 201220595289 CN201220595289 CN 201220595289 CN 201220595289 U CN201220595289 U CN 201220595289U CN 202880724 U CN202880724 U CN 202880724U
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- CN
- China
- Prior art keywords
- oil cylinder
- bars
- height
- crane
- front strut
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- 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 - Lifetime
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- Jib Cranes (AREA)
Abstract
The utility model relates to a movable-type propeller strut mechanism for a jib-type crane, and belongs to the field of cranes. The mechanism consists of front stay bars, rear draw bars, a diagonal bar, an oil cylinder and a support seat; the front stay bar and the rear draw bar are respectively formed by upper part front stay bars, lower part front stay bars, upper part rear draw bars and lower part rear draw bars through pin shafts; the lower part of the oil cylinder is connected with the support seat arranged on a chassis through pin shafts; a telescopic bar of the oil cylinder is connected with support seats arranged on the upper part front stay bars through pin shafts; when the crane operates, the telescopic bar of the oil cylinder extends to the operation position, a connecting bar structure formed by a propeller strut is at the operation extending state; the oil cylinder and the diagonal bar play a stable support effect, and the crane is started up normally; when the height of the propeller strut exceeds the height limiting height passing through a bridge, through contracting a piston rod of the oil cylinder, the upper part front stay bars can press downward, the upper part rear draw bars and the lower part rear draw bars can indent inward, so that the height of the propeller strut is lowered, and achieves the passing height of the bridge, and the crane passes through the bridge smoothly.
Description
Technical field
The utility model relates to the movable Shears of a kind of jib-type crane mechanism, belongs to the hoisting crane field.
Background technology
Shears mechanism is prevalent in various types of hoisting cranes, in span winch, floating crane, rotary crane, obtained especially using widely, it is the supporter of boom system, balanced system and changing-breadth system, is again that these systems are connected media with turntable and gate seat etc.The design of Shears mechanism not only directly has influence on its self load-carrying capacity and function, but also has influence on the quality of turntable structure, the performance of changing-breadth system and even the reliability of complete machine.Yet, related factor is a lot of in the design of Shears mechanism, such as the version of self, existing Shears generally all is fixed installation, because size is higher, in use and flow process, exist the drawback that to pass through the building of some specific limits for height, greatly affect crane job scope and work efficiency.Therefore need the exploitation can a kind of limitation in height that is not subjected to, have the Shears mechanism of good crossing ability, simple in structure, safe and reliable jib-type crane.For example when floating crane when the bridge, the Shears height of floating crane has surpassed bridge can be by scope the time, Shears can utilize self changeable, reduces oneself height, by bridge, finishes set work.
The utility model content
The purpose of this utility model provides a kind of movable Shears mechanism for jib-type crane, can reduce flexibly the height of Shears, thereby solves transportation or the operation obstacle that jib-type crane causes because of its limitation in height.
The utility model purpose is achieved by the following technical solution:
A kind of movable Shears mechanism for jib-type crane, by front strut, back stay, hound, oil cylinder and bearing form, captive joint with the chassis in the front strut lower end, the back stay lower end is connected with the bearing of being located at the chassis through bearing pin, front strut is connected the top and is connected with bearing pin with back stay, characteristics are that front strut and back stay are respectively by upper, bottom front strut and upper, the bottom back stay connects to form through bearing pin, the oil cylinder bottom by bearing pin be located at chassis seating and be connected, the flexible rod end of oil cylinder is sold axle and is connected with the bearing that is arranged at the top front strut, makes the top front strut, top back stay and bottom back stay reduce the Shears height with the flexible interlock of cylinder piston rod.
Described hound is connected by the bearing of bearing pin with bottom front strut, chassis respectively at two ends up and down.
The utility model is designed to movable connecting rod mechanism with Shears, and top front strut, top back stay and bottom back stay link with cylinder piston rod is flexible; When hoisting crane was worked, the piston rod of oil cylinder was elongated to working position, and the bar linkage structure that Shears forms is the operation extended configuration, and oil cylinder and hound play stable supporting role, normally enable hoisting crane; When jib-type crane passes through bridge, when the Shears height surpasses the limit for height height that beam bridge passes through, piston rod by retract cylinder, can make that the top front strut presses down, top back stay and bottom back stay inside contract interlock, the Shears height is reduced, but reach the bridge headroom, hoisting crane passes through bridge smoothly.
Description of drawings
Fig. 1 the utility model Shears is treated operation extended configuration scheme drawing
Fig. 2 the utility model Shears reduces high-level schematic because shrinking
The specific embodiment
How now further specify by reference to the accompanying drawings the utility model implements:
A kind of people's corner bracket mechanism for the jib-type crane changeable-shaped comprises that front strut is connected bearing pin 1a by top front strut 1s and connects with bottom front strut 1x, and its bottom is affixed with the chassis,
Back stay is connected bearing pin 3a by top back stay 3s and connects with bottom back stay 3x, its lower end is connected with the bearing 3c that is located at the chassis through bearing pin 3b, the top front strut is connected the top with bearing pin 2 connections with the top back stay, oil cylinder 4 bottoms are connected with the bearing 4b that is located at the chassis by bearing pin, oil cylinder 4 flexible rod ends are sold axle and are connected with the bearing 4a that is arranged at top front strut 1s, hound 5 two ends are respectively by bearing pin and the bearing 5a that is located at the bottom front strut, the bearing 5b on chassis connects, connect by above-mentioned each parts, the design's Shears forms stable bar linkage structure, piston rod by retract cylinder, the top front strut is pressed down, the flexible interlock of top back stay and bottom back stay, when hoisting crane is obstructed because of the Shears height, can reduce flexibly the Shears height and break the barriers smoothly, satisfy the operation needs.
Claims (2)
1. movable Shears mechanism that is used for jib-type crane, by front strut, back stay, hound, oil cylinder and bearing form, captive joint with the chassis in the front strut lower end, the back stay lower end is connected with the bearing of being located at the chassis through bearing pin, front strut is connected the top and is connected with bearing pin with back stay, it is characterized in that, front strut and back stay are respectively by upper, bottom front strut and upper, the bottom back stay connects to form through bearing pin, the oil cylinder bottom by bearing pin be located at chassis seating and be connected, the flexible rod end of oil cylinder is sold axle and is connected with the bearing that is arranged at the top front strut, makes the top front strut, top back stay and bottom back stay reduce the Shears height with the flexible interlock of cylinder piston rod.
2. a kind of movable Shears mechanism for jib-type crane according to claim 1 is characterized in that hound is connected by the bearing of bearing pin with bottom front strut, chassis respectively at two ends up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220595289 CN202880724U (en) | 2012-11-13 | 2012-11-13 | Movable-type propeller strut mechanism for jib-type crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220595289 CN202880724U (en) | 2012-11-13 | 2012-11-13 | Movable-type propeller strut mechanism for jib-type crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202880724U true CN202880724U (en) | 2013-04-17 |
Family
ID=48072171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220595289 Expired - Lifetime CN202880724U (en) | 2012-11-13 | 2012-11-13 | Movable-type propeller strut mechanism for jib-type crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202880724U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104355249A (en) * | 2014-11-10 | 2015-02-18 | 武桥重工集团股份有限公司 | Foldable device capable of preventing suspension arm from tilting backwards for large luffing crane |
| CN105776017A (en) * | 2014-12-26 | 2016-07-20 | 抚顺宏桥工程机械制造有限公司 | Undercarriage |
| CN113955654A (en) * | 2021-11-05 | 2022-01-21 | 南京中船绿洲机器有限公司 | Marine full-slewing crane propeller strut laying method |
-
2012
- 2012-11-13 CN CN 201220595289 patent/CN202880724U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104355249A (en) * | 2014-11-10 | 2015-02-18 | 武桥重工集团股份有限公司 | Foldable device capable of preventing suspension arm from tilting backwards for large luffing crane |
| CN105776017A (en) * | 2014-12-26 | 2016-07-20 | 抚顺宏桥工程机械制造有限公司 | Undercarriage |
| CN113955654A (en) * | 2021-11-05 | 2022-01-21 | 南京中船绿洲机器有限公司 | Marine full-slewing crane propeller strut laying method |
| CN113955654B (en) * | 2021-11-05 | 2023-12-08 | 南京中船绿洲机器有限公司 | Method for laying down propeller strut of marine full-circle crane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |