CN201056981Y - Power head key sleeve - Google Patents
Power head key sleeve Download PDFInfo
- Publication number
- CN201056981Y CN201056981Y CNU2007201696167U CN200720169616U CN201056981Y CN 201056981 Y CN201056981 Y CN 201056981Y CN U2007201696167 U CNU2007201696167 U CN U2007201696167U CN 200720169616 U CN200720169616 U CN 200720169616U CN 201056981 Y CN201056981 Y CN 201056981Y
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- Prior art keywords
- key
- unit head
- utility
- model
- overcoat
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- Expired - Lifetime
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Abstract
The utility model relates to a power head spline sleeve, which comprises an outer case (1), a spline sleeve body (2) and a flange head (4), wherein, the flange head (4) is fixed at one end of the outer case (1), and the spline sleeve body (2) is fixed at the inner part of the outer case (1). Compared with the original power head spline sleeve, the power head spline sleeve of the utility model has the advantages that the structure is compact, the spline sleeve body is only to be replaced during the replacement, the other components and parts are not required to be replaced, and the operating efficiency is improved; the flange head and the housing can be still used, and the therefore use-cost is reduced.
Description
Technical field
The utility model has related to a kind of key cover, particularly a kind of unit head key cover that is used for multiple piling machinery.
Background technology
The application of pile foundation construction boring machine aspect basic engineering construction more and more widely.Nowadays also more and more higher to the requirement of piling machinery.In order to improve operating efficiency, to reduce cost, not only stable service behaviour to be arranged, and also will embody high efficiency one side aspect the replacing of consumable accessory.
Unit head is a most serious impaired part in the piling machinery as the power take-off of machinery, and the key that especially contacts with drilling tool cover needs often to change.But used in the past key cover all is to be processed by the single-piece manufacturing, changes very inconveniently, and replacement cost is higher.
The basic structure of former key cover is shown in Fig. 3 and 4:
The key cover is whole to be processed by the single-piece manufacturing, and endoporus is processed with a plurality of keyways.Drilling tool work required torque is transmitted by the key side that key puts, and in addition for drilling tool is buried fast, also has big frictional force between key and drilling tool.So the key that key puts just weares and teares often replacing easily.Therefore but, and need when changing the key cover and will all pull down with a plurality of component that key is with assembly relation because of whole key cover is to be formed by the single-piece manufacturing can only make integral replacing.The major defect of therefore former key cover:
1. use cost increases greatly during integral replacing.
2. dismantle loaded down with trivial detailsly, downtime is long, reduced operating efficiency.
Summary of the invention
It is a kind of compact conformation that goal of the invention of the present utility model is to provide a kind of, connect unit head key cover reliable, that be convenient to change, and it has overcome the shortcoming of original unit head key cover.
In order to realize goal of the invention of the present utility model, the utility model is implemented in the following manner:
A kind of unit head key cover of the present utility model, wherein: it comprises: overcoat, key body and flange head, flange head are fixed on an end of overcoat, and the key body is fixed on the inside of overcoat;
A kind of unit head key cover of the present utility model, wherein: be provided with 4-8 inwardly protruded boss in the described key body, be provided with row's screw hole on the boss at least, screw is housed in the screw hole, screw is fixing on the coat with the key body;
A kind of unit head key cover of the present utility model, wherein: spring pad also is housed in the described screw hole, and screw is fixing on the coat with the key body by spring pad;
A kind of unit head key cover of the present utility model, wherein: be provided with 6 inwardly protruded boss in the described key body;
A kind of unit head key cover of the present utility model, wherein: described boss is provided with two row's screw holes;
A kind of unit head key cover of the present utility model, wherein: the number of the every row's screw hole on the described boss is 4-8.
A kind of unit head key cover of the present utility model, wherein: described flange head is welded on an end of overcoat.
Unit head key cover of the present utility model is compared with original unit head key cover to have: only need change the key body when compact conformation, replacing, need not to dismantle other component, improve operating efficiency; Flange head and overcoat still can use, and have reduced use cost.
Description of drawings
Fig. 1 is the generalized section of unit head key cover of the present utility model;
Fig. 2 is the left-hand schematic diagram of Fig. 1;
Fig. 3 is the generalized section of original unit head key cover;
Fig. 4 is the left-hand schematic diagram of Fig. 3.
The specific embodiment
See figures.1.and.2, unit head key cover of the present utility model comprises: overcoat 1, key body 2 and flange head 4, one end of flange head 4 welding covers 1, key body 2 is fixed on the inside of overcoat 1, be provided with 6 inwardly protruded boss 5 in the key body 2, boss 5 is provided with two row's screw holes 6, spring pad (not shown) and screw 5 are housed in the screw hole 6, screw 5 is fixed on key body 2 on the overcoat 1 by spring pad, the number of the every row's screw hole 6 on the boss 5 is decided on the length of unit head key cover and the size of its transfer torque, is generally 4-8.
More than describing is to explanation of the present utility model, is not the qualification to utility model, and the utility model institute restricted portion is referring to claim, and under the situation of spirit of the present utility model, the utility model can be done any type of modification.
Claims (7)
1. unit head key cover, it is characterized in that: it comprises: overcoat (1), key body (2) and flange head (4), flange head (4) is fixed on an end of overcoat (1), and key body (2) is fixed on the inside of overcoat (1).
2. unit head key cover as claimed in claim 1, it is characterized in that: be provided with 4-8 inwardly protruded boss (5) in the described key body (2), at least be provided with row's screw hole (6) on the boss (5), screw (5) is housed in the screw hole (6), and screw (5) is fixed on key body (2) on the overcoat (1).
3. unit head key cover as claimed in claim 2 is characterized in that: described screw hole also is equipped with spring pad in (6), and screw (5) is fixed on key body (2) on the overcoat (1) by spring pad.
4. unit head key cover as claimed in claim 3 is characterized in that: be provided with 6 inwardly protruded boss (5) in the described key body (2).
5. as claim 3 or 4 described unit head key covers, it is characterized in that: described boss (5) is provided with two row's screw holes (6).
6. unit head key cover as claimed in claim 5 is characterized in that: the number of the every row's screw hole (6) on the described boss (5) is 4-8.
7. unit head key cover as claimed in claim 6 is characterized in that: described flange head (4) is welded on an end of overcoat (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201696167U CN201056981Y (en) | 2007-07-09 | 2007-07-09 | Power head key sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201696167U CN201056981Y (en) | 2007-07-09 | 2007-07-09 | Power head key sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201056981Y true CN201056981Y (en) | 2008-05-07 |
Family
ID=39425821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201696167U Expired - Lifetime CN201056981Y (en) | 2007-07-09 | 2007-07-09 | Power head key sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201056981Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102913123A (en) * | 2012-11-02 | 2013-02-06 | 玉柴桩工(常州)有限公司 | Wedge key bar for power head and power head |
| CN103015882A (en) * | 2011-09-28 | 2013-04-03 | 高邮市恒辉机械有限公司 | Hub and key bush integrated power head |
| CN103277040A (en) * | 2013-05-28 | 2013-09-04 | 高邮市恒辉机械有限公司 | Power head used by rotary excavating drilling machine and long spiral drilling machine in common |
| CN103590755A (en) * | 2013-10-21 | 2014-02-19 | 北京市三一重机有限公司 | Key bushing, hub and rotary drilling rig |
| CN104481393A (en) * | 2014-12-12 | 2015-04-01 | 徐州徐工基础工程机械有限公司 | Power transmission structure of rotary drilling rig |
-
2007
- 2007-07-09 CN CNU2007201696167U patent/CN201056981Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015882A (en) * | 2011-09-28 | 2013-04-03 | 高邮市恒辉机械有限公司 | Hub and key bush integrated power head |
| CN102913123A (en) * | 2012-11-02 | 2013-02-06 | 玉柴桩工(常州)有限公司 | Wedge key bar for power head and power head |
| CN103277040A (en) * | 2013-05-28 | 2013-09-04 | 高邮市恒辉机械有限公司 | Power head used by rotary excavating drilling machine and long spiral drilling machine in common |
| CN103590755A (en) * | 2013-10-21 | 2014-02-19 | 北京市三一重机有限公司 | Key bushing, hub and rotary drilling rig |
| CN103590755B (en) * | 2013-10-21 | 2016-01-20 | 北京市三一重机有限公司 | Key cover, wheel hub and rotary drilling rig |
| CN104481393A (en) * | 2014-12-12 | 2015-04-01 | 徐州徐工基础工程机械有限公司 | Power transmission structure of rotary drilling rig |
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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: 20080507 |