CN2918373Y - Mast expansion joint - Google Patents
Mast expansion joint Download PDFInfo
- Publication number
- CN2918373Y CN2918373Y CN 200620103894 CN200620103894U CN2918373Y CN 2918373 Y CN2918373 Y CN 2918373Y CN 200620103894 CN200620103894 CN 200620103894 CN 200620103894 U CN200620103894 U CN 200620103894U CN 2918373 Y CN2918373 Y CN 2918373Y
- Authority
- CN
- China
- Prior art keywords
- side frame
- lower mast
- slip joint
- frame limit
- orbit portion
- 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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- Forklifts And Lifting Vehicles (AREA)
Abstract
The utility model discloses a telescoping joint of a mast, which has a groove-shaped first railway part (1), the first railway part (1) comprises a front frame (7), a side frame (4) and a rear frame (3), which is characterized an connection edge (6) integrated with the side frame for arranging an attachment hole (5) is arranged on the outer side of the side frame (4). Thus, the attachment hole can be arranged on the connection edge, since the connection side is positioned out of the first railway part, you need not worry that metal filings produced when machining attachment hole (impossible actually) falling into the first railway part to impact even damage the match relationship between two adjacent telescoping joints (including a guide wheel); in addition, with the connection edge, the relevant inertia moment of the telescoping joint can be enlarged to reinforce rigidity of the telescopic mast.
Description
Technical field
The utility model relates to a kind of member of high-altitude operation platform, is the lower mast slip joint specifically.
Background technology
High-altitude operation platform is the important accessory appliances that carries out aloft work, is used for that the operating personnel is lifted to the high-altitude from ground and carries out operation.The technical scheme of a kind of " fourth mast post high-altitude operation platform " is promptly disclosed for the utility model patent specification sheets of CN2304648Y as Granted publication number, this class high-altitude operation platform can lifting under the driving of power reason be that it possesses telescopic lower mast, this lower mast is assembled into by the multi-joint telescoping joint, each slip joint (existing slip joint is seen Fig. 2) has first orbit portion 1 of second orbit portion 2 and groove shape, common fit be the back one slip joint the second track position 2 in first orbit portion 1 of last slip joint, be provided with track adjusting wheel therebetween, and be connected with hauling rope.Yet when practical set, sometimes need on the side frame limit 4 of first orbit portion on a certain lower mast slip joint of the lower mast group after the assembling, join and connect hole 5, (as: go up control cable so that connect corresponding member, the observing and controlling element, for increasing link between many lower masts group that stability is provided with etc.), (existing job operation is the mode of blanking normally will to produce scrap metal thus when offering connecting bore, as drilling), and be very easy to fall in first orbit portion, and the intimate osed top structure that the cooperation place forms between lower mast, make scrap metal be difficult to discharge, thereby the scrap metal that falls into may influence the matching relationship that faces mutually between two slip joints, and may cause the aggravation wearing and tearing of guide wheel assembly, influence the service life and the safety of product.
The utility model content
The technical assignment of the technical problems to be solved in the utility model and proposition is that the scrap metal that produces when overcoming the site assembly that prior art exists easily falls in first orbit portion and influence even destroy the defective of facing the matching relationship that (comprises track adjusting wheel) between two slip joints mutually, and a kind of lower mast slip joint is provided.For this reason, the utility model is by the following technical solutions:
A kind of lower mast slip joint, it has first orbit portion of groove shape, and this first orbit portion is surrounded by preceding edge, side frame limit and back edge, and the arranged outside that it is characterized in that described side frame limit has the connection side that is used to offer connecting bore with its one.
Described lower mast slip joint is characterized in that described connecting bore is a unthreaded hole.
Described lower mast slip joint is characterized in that described connecting bore is a tapped bore.
Described lower mast slip joint is characterized in that the cross section of described connection side is " " shape, and its transverse part is parallel with described side frame limit, and its vertical part and described side frame limit are connected as a single entity.
The utility model passes through the connection side in arranged outside and its one on side frame limit, can offer connecting bore thereon therefrom, because this connection side is positioned at outside first orbit portion, thereby needn't worries scrap metal that (in fact also can not) produces when processing connecting bore to fall into first orbit portion and influence even destroy and face the matching relationship that (comprises track adjusting wheel) between two slip joints mutually; In addition, because the setting of connection side can increase the moment of inertia of slip joint accordingly, and then strengthen the rigidity of telescopic mast.
Description of drawings
Fig. 1 is the schematic cross-section of lower mast slip joint of the present utility model.
Fig. 2 is the schematic cross-section of existing lower mast slip joint.
The specific embodiment
Lower mast slip joint as shown in Figure 1, it is integral structure, it has first orbit portion 1 of groove shape and the second tabular orbit portion 2, first orbit portion 1 is surrounded by preceding edge 7, side frame limit 4 and back edge 3, the arranged outside on side frame limit 4 has the connection side 6 that is used to offer connecting bore 5 with its one, and is concrete, and the cross section of connection side 6 is " " shape, its transverse part is parallel with side frame limit 4, and its vertical part and side frame limit 4 are connected as a single entity.Connecting bore 5 shown in the figure is tapped bore, is used for matching with attaching partss such as screw or fastener.
In addition, the connecting bore 5 that is used for the join dependency member can also be a unthreaded hole, and matching with this unthreaded hole so can be that screw bolt and nut cooperates, and does not give unnecessary details at this.
Shown in figure, the scrap metal that obviously can avoid producing during the processing connecting bore falls in first orbit portion.
And, through design calculation, the setting of this programme connection side, the connection side of relative existing structure can reach on the basis of the material of increase by 4.67%, and the moment of inertia of slip joint can increase by 5.84% on the M-M direction, can increase by 9.87% on the N-N direction.Make the Technological Economy of this material obtain further optimization.
Claims (4)
1, a kind of lower mast slip joint, it has first orbit portion (1) of groove shape, this first orbit portion (1) is surrounded by preceding edge (7), side frame limit (4) and back edge (3), and the arranged outside that it is characterized in that described side frame limit (4) has the connection side that is used to offer connecting bore (5) (6) with its one.
2, lower mast slip joint according to claim 1 is characterized in that described connecting bore (5) is a unthreaded hole.
3, lower mast slip joint according to claim 1 is characterized in that described connecting bore (5) is a tapped bore.
4, according to claim 1,2 or 3 described lower mast slip joints, it is characterized in that the cross section of described connection side (6) is " " shape, its transverse part is parallel with described side frame limit (4), and its vertical part and described side frame limit are connected as a single entity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620103894 CN2918373Y (en) | 2006-05-23 | 2006-05-23 | Mast expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620103894 CN2918373Y (en) | 2006-05-23 | 2006-05-23 | Mast expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2918373Y true CN2918373Y (en) | 2007-07-04 |
Family
ID=38216187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620103894 Expired - Fee Related CN2918373Y (en) | 2006-05-23 | 2006-05-23 | Mast expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2918373Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356798A (en) * | 2016-10-08 | 2017-01-25 | 苏州威尔特铝合金升降机械有限公司 | Mast reel system for mast-type aerial work platform |
-
2006
- 2006-05-23 CN CN 200620103894 patent/CN2918373Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356798A (en) * | 2016-10-08 | 2017-01-25 | 苏州威尔特铝合金升降机械有限公司 | Mast reel system for mast-type aerial work platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Hangzhou Sivge Aerial Work Machinery Co., Ltd. Assignor: Chen Jianping Contract record no.: 2010330000314 Denomination of utility model: Mast expansion joint Granted publication date: 20070704 License type: Exclusive License Record date: 20100319 |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070704 Termination date: 20100523 |