CN204152377U - Tower crane lower support seat access door structure - Google Patents
Tower crane lower support seat access door structure Download PDFInfo
- Publication number
- CN204152377U CN204152377U CN201420594889.6U CN201420594889U CN204152377U CN 204152377 U CN204152377 U CN 204152377U CN 201420594889 U CN201420594889 U CN 201420594889U CN 204152377 U CN204152377 U CN 204152377U
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- CN
- China
- Prior art keywords
- lower support
- tower crane
- support seat
- access door
- door body
- 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.)
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Abstract
The utility model discloses a kind of tower crane lower support seat access door structure, at the backing plate (1) of undersetting (10) upper fixed installation support door body (7), described door body (7) is rotary structure; Described backing plate (1) is installed bearing mounting sleeve (5); Described door body (7) is sleeved on described bearing mounting sleeve (5) by bearing (2).This tower crane lower support seat access door structure, by adopting revolving door body structure, makes the installation of access door compacter, makes the unlatching of a body, closed operation more laborsaving, lighter; No matter and whether door body is opened and all be ensure that undersetting inner space is enough broad, decreases the space constriction by personnel, is convenient to personnel and passes through.
Description
Technical field
The utility model relates to a kind of tower crane lower support seat structure, specifically a kind of tower crane lower support seat access door structure.
Background technology
Tower crane lower support seat generally have one down through door, be convenient to tower department when operation element, prevent other staff from entering.And due to the structure of bearing inside and space restriction, when by undersetting door, space seems very limited.
As shown in Figure 1, in the prior art, tower crane lower support seat access door generally adopts structure of folding door, and this structure adopts two fan folding doors to contact with folding, and entirety is fixed by folding and doorframe again, and because construction weight is large, limited space, structure handles effort.In actual processing, the deviation effects of folding axiality, make it need overcome larger resistance when rotating, folding, when turning up, folds through twice, need control its wrap direction when middle folding folds, sometimes necessary control adjustment is needed, due to the restriction by undersetting inner space, comparatively require great effort when making it open, operator can be used for rotating and controlling folding direction by larger power when rotating; Require higher to its axiality during folding welding processing in addition, and in this structure, use 4 foldings, processing request is high, when folding is welded and fixed, because the folding distance of 21 group is larger, for ensureing its axiality, need configuration or special frock to be ensured, two one group of axiality requirements, as deviation is large, frictional resistance when it rotates can be increased, make rotation more difficult.This structure in actual use, separate undersetting inner space after opening, and when opening, it vertically erects by folding door, makes originally limited space more aobvious narrow, limited space originally reduced once again, increases the constriction by personnel.
Utility model content
For above-mentioned prior art Problems existing, the utility model provides a kind of tower crane lower support seat access door structure, makes the installation of access door compacter, makes rapid operation, lighter; And ensure that undersetting inner space is enough broad, be reduced by the space constriction of personnel, be convenient to personnel and pass through.
To achieve these goals, this tower crane lower support seat access door structure fixedly mounts the backing plate of support door body on undersetting, described Men Tiwei rotary structure; Bearing mounting sleeve installed by described backing plate; Described door body is contained on described bearing mounting sleeve by bearing holder (housing, cover).
Further, described bearing holder (housing, cover) is contained in after on described bearing mounting sleeve and is fixed by circlip for hole and circlip for shaft.
Further, described bearing mounting sleeve top cover is equipped with backplate.
Further, described backplate and bearing mounting sleeve are fastened by bolts part and backing plate is fastenedly connected.
Further, described bolt fastener comprises bolt, plain washer, spring washer and nut.
In addition, door body by installing the mode of spacer, can be sleeved on outside spacer, be fixed by bearing pin and cottor pin by described backing plate.
Compared with prior art, this tower crane lower support seat access door structure, by adopting revolving door body structure, makes the installation of access door compacter, makes the unlatching of a body, closed operation more laborsaving, lighter; No matter and whether door body is opened and all be ensure that undersetting inner space is enough broad, decreases the space constriction by personnel, is convenient to personnel and passes through.
Accompanying drawing explanation
Fig. 1 is folding door type structural representation in prior art;
Fig. 2 is agent structure schematic diagram of the present utility model;
Fig. 3 is syndeton schematic diagram of the present utility model;
Fig. 4 is another kind of syndeton schematic diagram of the present utility model;
Fig. 5 is the semi-open state top view of a body;
Fig. 6 is a body full open state top view;
In figure: 1, backing plate, 10, undersetting, 11, folding door, 12, folding, 2, bearing, 21, bearing pin, 22, cottor pin, 3, backplate, 4, bolt fastener, 5, bearing mounting sleeve, 51, spacer, 6, circlip for shaft, 7, Men Ti, 8, circlip for hole.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figures 2 and 3, this tower crane lower support seat access door structure fixedly mounts the backing plate 1 of support door body 7 on undersetting 10, and described door body 7 is rotary structure; Bearing mounting sleeve 5 installed by described backing plate 1; Described door body 7 is sleeved on described bearing mounting sleeve 5 by bearing 2.By the effect of bearing 2, realize rotarily opening or closing of door body 7, make the unlatching of a body 7, closed operation more laborsaving, lighter; No matter and whether door body 7 is opened and all be ensure that undersetting inner space is enough broad, decreases the space constriction by personnel, is convenient to personnel and passes through.
Further, described bearing 2 is sleeved on after on described bearing mounting sleeve 5 and is fixed by circlip for hole 8 and circlip for shaft 6.Ensure the steadiness of door body 7, make the installation of a body 7 compacter, convenient.
Further, described bearing mounting sleeve 5 top cover is equipped with backplate 3.The fixing of bearing mounting sleeve 5 is realized by backplate 3.
Further, described backplate 3 and bearing mounting sleeve 5 are fastened by bolts part 4 and are fastenedly connected with backing plate 1.The entirety realizing door body 7 is fixed.
Further, described bolt fastener 4 comprises bolt, plain washer, spring washer and nut.Make whole mounting structure simple, convenient.
As shown in Figure 4, door body 7 by installing the mode of spacer 51, can be sleeved on outside spacer 51 by the backing plate 1 of this tower crane lower support seat access door structure, being fixed by bearing pin 21 and cottor pin 22, can the purpose of this utility model be reached equally.
Fig. 5 and Fig. 6 is this tower crane lower support seat access door structure two top views in a state of use, can clearly find out from Fig. 5 and Fig. 6, door body 7 is rotary structure, makes the installation of access door compacter, make the unlatching of a body 7, closed operation more laborsaving, more light; No matter and whether door body 7 is opened and all be ensure that undersetting 10 inner space is enough broad, decreases the space constriction by personnel, is convenient to personnel and passes through.
Claims (6)
1. a tower crane lower support seat access door structure, is characterized in that,
At the backing plate (1) of undersetting (10) upper fixed installation support door body (7), described door body (7) is rotary structure;
Described backing plate (1) is installed bearing mounting sleeve (5);
Described door body (7) is sleeved on described bearing mounting sleeve (5) by bearing (2).
2. a kind of tower crane lower support seat access door structure according to claim 1, is characterized in that,
Described bearing (2) is sleeved on after on described bearing mounting sleeve (5) and is fixed by circlip for hole (8) and circlip for shaft (6).
3. a kind of tower crane lower support seat access door structure according to claim 1 and 2, is characterized in that,
Described bearing mounting sleeve (5) top cover is equipped with backplate (3).
4. a kind of tower crane lower support seat access door structure according to claim 3, is characterized in that,
Described backplate (3) and bearing mounting sleeve (5) are fastened by bolts part (4) and are fastenedly connected with backing plate (1).
5. a kind of tower crane lower support seat access door structure according to claim 4, is characterized in that,
Described bolt fastener (4) comprises bolt, plain washer, spring washer and nut.
6. a kind of tower crane lower support seat access door structure according to claim 1, is characterized in that,
Described backing plate (1) is installed spacer (51), described door body (7) is sleeved on spacer (51) outward, is fixed by bearing pin (21) and cottor pin (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420594889.6U CN204152377U (en) | 2014-10-14 | 2014-10-14 | Tower crane lower support seat access door structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420594889.6U CN204152377U (en) | 2014-10-14 | 2014-10-14 | Tower crane lower support seat access door structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204152377U true CN204152377U (en) | 2015-02-11 |
Family
ID=52510502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420594889.6U Active CN204152377U (en) | 2014-10-14 | 2014-10-14 | Tower crane lower support seat access door structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204152377U (en) |
-
2014
- 2014-10-14 CN CN201420594889.6U patent/CN204152377U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |