CN207738358U - A kind of derrick runway girder connection structure - Google Patents
A kind of derrick runway girder connection structure Download PDFInfo
- Publication number
- CN207738358U CN207738358U CN201721871254.6U CN201721871254U CN207738358U CN 207738358 U CN207738358 U CN 207738358U CN 201721871254 U CN201721871254 U CN 201721871254U CN 207738358 U CN207738358 U CN 207738358U
- Authority
- CN
- China
- Prior art keywords
- otic placode
- axis pin
- strip
- connection structure
- shaped 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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- Jib Cranes (AREA)
Abstract
The utility model belongs to tower crane manufacturing technology field, it is related to a kind of derrick runway girder connection structure, include winding up outer otic placode that boom end is arranged in pairs and to wind up the interior otic placode that boom end is arranged in pairs second first, outer otic placode and interior otic placode are equipped with strip-shaped hole, axis pin is mounted in strip-shaped hole to connect outer otic placode with interior otic placode, the axial limiting portion for preventing axis pin from generating axial movement is installed on the outside of outer otic placode, being equipped among the first top boom and axis pin prevents axis pin from generating the radial limiting section moved radially.The utility model passes through the improvement to otic placode structure, the axis pin between the top boom of crane arm is set to connect more convenient, it is easy for installation laborsaving, reduce the requirement on machining accuracy to pin shaft hole, the welding deformation of otic placode and the tolerance value of mismachining tolerance are increased, production and processing cost can be effectively reduced.
Description
Technical field
The utility model belongs to tower crane manufacturing technology field, specifically, being a kind of derrick runway girder connection structure.
Background technology
Derrick runway girder is connected with each other the lattice weldment that forms by more piece arm support, and arm support winds up including one, two
Root lower edge and the web member for connecting each chord member, each chord member are the hollow-core construction that angle steel spelling side is welded, and are connected by axis pin between top boom
It connects.
There are following technical deficiencies for the axis pin connection of crane arm in the prior art：Axis pin connection adds top boom hinge hole
Work required precision is high, and otic placode welding slightly deformation or position deviation will appear axis pin when installing axis pin and be difficult to throw pin shaft hole into
The phenomenon that；Installation process needs working at height, is not easy to manipulate, and operative employee has higher peace when axis pin is beaten in high-altitude with "painted-face" character in opera
Full blast danger.
Utility model content
The utility model provides a kind of derrick runway girder connection structure, and the connection structure is simple, novel, in installation, dismounting
It is convenient, fast in the process, securely and reliably.
In order to realize the purpose of this utility model, intend using following technical scheme：
A kind of derrick runway girder connection structure includes winding up outer otic placode that boom end is arranged in pairs and on second first
The interior otic placode that chord member end is arranged in pairs, outer otic placode and interior otic placode are equipped with strip-shaped hole, and axis pin is mounted in strip-shaped hole with will be outer
Otic placode is connected with interior otic placode, the axial limiting portion for preventing axis pin from generating axial movement is installed on the outside of outer otic placode, first winds up
Being equipped among bar and axis pin prevents axis pin from generating the radial limiting section moved radially.
Further, the strip-shaped hole is open through-hole, is open end close to one end of top boom, and the other end is semicircle
Closed end.
Further, the strip-shaped hole is U-shaped or the open through-hole of V-arrangement.
Further, the axial limiting portion is L shaped plate body, is fixedly arranged on the outside of strip-shaped hole closed end, is constituted with outer otic placode
For the card slot of end part of pin shaft insertion.
Further, the radial limiting section is U-board body, and U-shaped opening end fixes on axis pin outer wall, and the other end is pressed on
First winds up boom end.
The utility model has the beneficial effects that：
By the improvement to otic placode structure, the axis pin between the top boom of crane arm is made to connect more convenient, province easy for installation
Power reduces the requirement on machining accuracy to pin shaft hole, increases the welding deformation of otic placode and the tolerance value of mismachining tolerance, can be effective
Reduce production and processing cost.
Description of the drawings
Fig. 1 shows the overall structure diagram of the utility model；
Fig. 2 shows the partial enlarged views at A in Fig. 1；
Fig. 3 shows the schematic diagram of outer otic placode and interior otic placode；
Fig. 4 shows the schematic diagram of radial limiting section.
Reference sign：
The first top booms of 11-, the second top booms of 12-, the outer otic placodes of 21-, otic placode in 22-, 3- axis pins, 4- axial limitings portion,
5- radial direction limiting sections.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings and by specific embodiment, and following embodiment is only retouched
The property stated, it is not restrictive, protection scope of this utility model cannot be limited by this.
Specific embodiment 1
The utility model belongs to tower crane manufacturing technology field, is related to a kind of derrick runway girder connection structure, as shown in Figure 1 to Figure 4
It is shown, include the outer otic placode 21 being arranged in pairs in 11 end of the first top boom and in 12 end of the second top boom is arranged in pairs
Otic placode 22, outer otic placode 21 and interior otic placode 22 are equipped with strip-shaped hole, and axis pin 3 is mounted in strip-shaped hole with by outer otic placode 21 and interior otic placode
22 connections, the outside of outer otic placode 21 are installed with the axial limiting portion 4 for preventing axis pin 3 from generating axial movement, 11 He of the first top boom
Being equipped among axis pin 3 prevents axis pin 3 from generating the radial limiting section 5 moved radially.
Further, the strip-shaped hole is open through-hole, is open end close to one end of top boom, and the other end is semicircle
Closed end.Preferably, the strip-shaped hole can be U-shaped or the open through-hole of V-arrangement.
Further, the axial limiting portion 4 is L shaped plate body, the outside of strip-shaped hole closed end is fixedly arranged on, with 21 structure of outer otic placode
At the card slot being embedded in for 3 end of axis pin.
Further, the radial limiting section 5 is U-board body, and U-shaped opening end fixes on 3 outer wall of axis pin, and the other end compresses
In 11 end of the first top boom.
The operation principle of the utility model is as follows：
Strip-shaped hole on the outer otic placode 21 of alignment and interior otic placode 22, strip-shaped hole is obviously bigger than traditional round pin shaft hole, can be compared with
For easily axis pin 3 is inserted into strip-shaped hole；When first top boom 11 and the second top boom 12 are tensed to both sides respectively, axis pin 3
End is caught in the card slot in axial limiting portion 4, can be limited axis pin 3 and axially generated displacement, preventing axis pin 3 from being taken off out of strip-shaped hole
Go out；The open end of U-board body is fixed on 3 outer wall of axis pin again, the other end is pressed on 11 end of the first top boom, can banking pin
Axis 3 is radially generating displacement, and axis pin 3 is made tightly to be stuck in strip-shaped hole.
Above-described is only preferred embodiments of the present invention, it is noted that for the ordinary skill of this field
For personnel, under the premise of not departing from utility model design, various modifications and improvements can be made, these belong to this reality
With novel protection domain.
Claims (5)
1. a kind of derrick runway girder connection structure, it is included in first and winds up the outer otic placode and wind up second that boom end is arranged in pairs
The interior otic placode that boom end is arranged in pairs, outer otic placode and interior otic placode are equipped with strip-shaped hole, and axis pin is mounted in strip-shaped hole with by external ear
Plate is connected with interior otic placode, it is characterised in that：The axial limiting portion for preventing axis pin from generating axial movement is installed on the outside of outer otic placode,
Being equipped among first top boom and axis pin prevents axis pin from generating the radial limiting section moved radially.
2. derrick runway girder connection structure according to claim 1, it is characterised in that：The strip-shaped hole is open logical
Hole, is open end close to one end of top boom, and the other end is semicircular closed end.
3. derrick runway girder connection structure according to claim 1, it is characterised in that：The strip-shaped hole is that U-shaped or V-arrangement are opened
Put formula through-hole.
4. derrick runway girder connection structure according to claim 2, it is characterised in that：The axial limiting portion is L shaped plate
Body is fixedly arranged on the outside of strip-shaped hole closed end, and the card slot being embedded in for end part of pin shaft is constituted with outer otic placode.
5. derrick runway girder connection structure according to claim 2, it is characterised in that：The radial direction limiting section is U-board
Body, U-shaped opening end fix on axis pin outer wall, and the other end is pressed on first and winds up boom end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721871254.6U CN207738358U (en) | 2017-12-28 | 2017-12-28 | A kind of derrick runway girder connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721871254.6U CN207738358U (en) | 2017-12-28 | 2017-12-28 | A kind of derrick runway girder connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207738358U true CN207738358U (en) | 2018-08-17 |
Family
ID=63120244
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721871254.6U Expired - Fee Related CN207738358U (en) | 2017-12-28 | 2017-12-28 | A kind of derrick runway girder connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207738358U (en) |
-
2017
- 2017-12-28 CN CN201721871254.6U patent/CN207738358U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20180817 Termination date: 20181228 |