CN203767891U - Pin shaft connecting structure of cargo boom - Google Patents
Pin shaft connecting structure of cargo boom Download PDFInfo
- Publication number
- CN203767891U CN203767891U CN201420175013.8U CN201420175013U CN203767891U CN 203767891 U CN203767891 U CN 203767891U CN 201420175013 U CN201420175013 U CN 201420175013U CN 203767891 U CN203767891 U CN 203767891U
- Authority
- CN
- China
- Prior art keywords
- pin
- hole
- shaft
- axis hole
- cargo boom
- 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
Links
- 238000003466 welding Methods 0.000 claims abstract description 4
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Jib Cranes (AREA)
Abstract
The utility model discloses a pin shaft connecting structure of a cargo boom. The cargo boom is mainly formed by connecting multiple cargo boom sections through a pin shaft; each cargo boom section is formed by welding an upper rotary rod, a lower rotary rod and an inclined rod; the lower rotary rods of two adjacent cargo boom sections are at least provided with connecting lugs with axial shaft holes at one connecting end; a middle groove is formed in the other connecting end; shaft holes aligned with the transverse shaft holes in the connecting lugs are symmetrically formed in two sides of the middle groove; the connecting lugs are inserted into the middle groove; a pin shaft penetrates into the shaft holes in two sides of the middle groove and the transverse shaft holes of the connecting lugs; an outwards convex positioning block is arranged at a position, which is positioned below the shaft holes, on an outer side face of one side of the middle groove; a pin hole perpendicular to the center of the shaft hole is formed in the positioning block; a shaft end pin hole which is positioned in the same vertical line as the pin hole is formed in an exposed end of the pin shaft; an open pin penetrates through the pin hole and the shaft end pin hole. The pin shaft connecting structure of the cargo boom has the characteristics that the pin shaft connecting structure is simple and convenient to use and mount and can achieve firm and safe use effects on connection of the cargo boom sections.
Description
Technical field
The utility model relates to a kind ofly for fixing structure for pin shaft on tower crane, crane arm, belong to tower crane tool technical field.
Background technology
Existing tower crane, the structure of boom device forms and comprises: root crane arm joint, crane arm joint, end crane arm joint and cylinder lever connecting rod in the middle of several; Between described root crane arm joint, middle a plurality of crane arm joints and end crane arm joint, with bearing pin and spring cotter, connect into a whole crane arm respectively.But owing to being that bearing pin connects, during actual use, rotating often appears in bearing pin in axis hole, and because this rotation will cause the wearing and tearing between bearing pin and axis hole, time one length will reduce the strained condition of point of connection between crane arm joint; Serious meeting is ruptured, and causes safety misadventure.
Summary of the invention
The purpose of this utility model is to overcome the deficiency that prior art exists, and provides a kind of simple in structure, easy to install and use, can the connection of crane arm joint be played firmly and be used safely the pin shaft connection structure of the crane arm of effect.
The purpose of this utility model completes by following technical solution, described crane arm is mainly formed by connecting by bearing pin by a plurality of crane arm joints, described crane arm joint consists of upper swing arm and lower swing arm and brace welding, the lower swing arm of two adjacent crane arm joints is at least provided with the connection lug with horizontal axis hole at a coupling end, another coupling end is provided with intermediate groove, and the dual-side of this intermediate groove be symmetrically arranged be connected lug on axis hole that laterally axis hole is aimed at, and be plugged in described intermediate groove at connection lug, one bearing pin penetrate described intermediate groove dual-side axis hole be connected in the horizontal axis hole of lug, on the lateral surface of described intermediate groove one side, be positioned at axis hole below and be provided with an evagination locating piece, on it, be provided with the pin-and-hole perpendicular to axis hole center, described bearing pin exposed junction is provided with the axle head pin-and-hole on same perpendicular line with described pin-and-hole, and a spring cotter cross-under is in described pin-and-hole and axle head pin-and-hole.
The utlity model has simple in structurely, easy to install and use, can play firmly and the feature such as safe handling effect the connection of crane arm joint.
Accompanying drawing explanation
Fig. 1 is the structural representation of crane arm described in the utility model.
Fig. 2 be Figure 1A to shown in pin shaft connection structure schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail: shown in Fig. 1, crane arm described in the utility model is mainly formed by connecting by bearing pin by a plurality of crane arms joint 1, described crane arm joint 1 consists of upper swing arm 2 and lower swing arm 3 and brace 4 welding.
Shown in Fig. 2, the pin shaft connection structure of described crane arm, it comprises: the lower swing arm 3 of two adjacent crane arm joints 1 is at least provided with the connection lug 5 with horizontal axis hole at a coupling end, another coupling end is provided with intermediate groove 6, and the dual-side of this intermediate groove 6 be symmetrically arranged be connected lug 5 on axis hole that laterally axis hole is aimed at, and be plugged in described intermediate groove 6 connecting lug 5, a bearing pin 7 penetrate described intermediate groove 6 dual-side axis holes be connected in the horizontal axis hole of lug 5; On the lateral surface of described intermediate groove 6 one sides, be positioned at axis hole below and be provided with an evagination locating piece 8, on it, be provided with the pin-and-hole perpendicular to axis hole center, described bearing pin exposed junction is provided with the axle head pin-and-hole on same perpendicular line with described pin-and-hole, one spring cotter 9 cross-under are in described pin-and-hole and axle head pin-and-hole, and make bearing pin 7 not do any rotation relative to lower swing arm 3, thereby reduce wear, reduce strained condition.
Claims (1)
1. the pin shaft connection structure of a crane arm, described crane arm is mainly formed by connecting by bearing pin by a plurality of crane arm joints, described crane arm joint consists of upper swing arm and lower swing arm and brace welding, the lower swing arm of two adjacent crane arm joints is at least provided with the connection lug with horizontal axis hole at a coupling end, another coupling end is provided with intermediate groove, and the dual-side of this intermediate groove be symmetrically arranged be connected lug on axis hole that laterally axis hole is aimed at, and be plugged in described intermediate groove at connection lug, one bearing pin penetrate described intermediate groove dual-side axis hole be connected in the horizontal axis hole of lug, it is characterized in that on the lateral surface of described intermediate groove one side, be positioned at axis hole below and be provided with an evagination locating piece, on it, be provided with the pin-and-hole perpendicular to axis hole center, described bearing pin exposed junction is provided with the axle head pin-and-hole on same perpendicular line with described pin-and-hole, and a spring cotter cross-under is in described pin-and-hole and axle head pin-and-hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420175013.8U CN203767891U (en) | 2014-04-12 | 2014-04-12 | Pin shaft connecting structure of cargo boom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420175013.8U CN203767891U (en) | 2014-04-12 | 2014-04-12 | Pin shaft connecting structure of cargo boom |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203767891U true CN203767891U (en) | 2014-08-13 |
Family
ID=51285105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420175013.8U Expired - Fee Related CN203767891U (en) | 2014-04-12 | 2014-04-12 | Pin shaft connecting structure of cargo boom |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203767891U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106379821A (en) * | 2016-11-01 | 2017-02-08 | 山东电力建设第工程公司 | Construction method for assemble cargo boom of crawling crane through breaking-off method |
-
2014
- 2014-04-12 CN CN201420175013.8U patent/CN203767891U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106379821A (en) * | 2016-11-01 | 2017-02-08 | 山东电力建设第工程公司 | Construction method for assemble cargo boom of crawling crane through breaking-off method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203767891U (en) | Pin shaft connecting structure of cargo boom | |
| CN203814257U (en) | Branch pressing device used for shaping of fruit tree | |
| CN203536866U (en) | Tripod line laying device | |
| CN204778491U (en) | Tower machine slewing tower and upper bracket connecting pin roll prevent changeing device | |
| CN203657955U (en) | Connecting sleeve used for measuring shaft static braking torque | |
| CN105006721A (en) | High-voltage cross-linked cable quick joint automatic untwisting device | |
| CN204200830U (en) | Rotating pin linkage structure | |
| CN207360334U (en) | A kind of anti-jump pin on locomotive coupler | |
| CN204569227U (en) | A kind of connection structure of crane arm | |
| CN203890885U (en) | Connecting device for steel cable and pull rod of horizontally-stayed cable bridge | |
| CN204312481U (en) | The interfacing part of a kind of use axial Y shape annulus plate docking steel pipe | |
| CN203359839U (en) | Novel pin shaft standstill locking structure | |
| CN203545424U (en) | Rotary shackle | |
| CN203488479U (en) | Oil cylinder connecting mechanism and engineering machinery | |
| CN201934579U (en) | Two-way connector for chain ring of chain | |
| CN202558504U (en) | Novel tower crane boom | |
| CN204878295U (en) | Load special universal joint of quick -witted electric putter onto ship | |
| CN204344595U (en) | The interfacing part of a kind of use axial meter-shape annulus plate docking steel pipe | |
| CN103466428A (en) | Rotating shackle | |
| CN205578427U (en) | Balanced pipe spreader and engine cylinder block go up connection structure of interfacing part | |
| CN204251862U (en) | A kind of computerized emboridering machine wire jumper wire-threading device | |
| CN204799869U (en) | Forge and use drawing of patterns pick -off unit | |
| CN204127142U (en) | Stainless steel single-unit coupling | |
| CN204353734U (en) | Derrick crane pin removal | |
| CN201506688U (en) | Lower contact for jib of tower crane |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Pin shaft connecting structure of cargo boom Effective date of registration: 20160119 Granted publication date: 20140813 Pledgee: Zhejiang Deqing rural commercial bank Limited by Share Ltd. Pledgor: ZHEJIANG DEQING HUAYANG TECHNOLOGY Co.,Ltd. Registration number: 2016990000053 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 |