CN204198298U - A kind of column crane mast section connection structure - Google Patents
A kind of column crane mast section connection structure Download PDFInfo
- Publication number
- CN204198298U CN204198298U CN201420576319.4U CN201420576319U CN204198298U CN 204198298 U CN204198298 U CN 204198298U CN 201420576319 U CN201420576319 U CN 201420576319U CN 204198298 U CN204198298 U CN 204198298U
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- China
- Prior art keywords
- steel plate
- contact surface
- connection structure
- mast section
- standard knot
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 31
- 239000010959 steel Substances 0.000 claims abstract description 31
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000000875 corresponding Effects 0.000 claims abstract description 4
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 5
- 206010011376 Crepitations Diseases 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 206010015150 Erythema Diseases 0.000 description 2
- 241000826860 Trapezium Species 0.000 description 2
- 230000003042 antagnostic Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009114 investigational therapy Methods 0.000 description 1
Abstract
The utility model discloses a kind of novel column crane mast section connection structure, weld one piece of plate iron outside the bolt sleeve column of column crane mast section, standard knot is when connecting, contact surface can one_to_one corresponding, can compress mutually, and centered by contact surface, form symmetrical structure, the side end face of described steel plate and contact surface carry out light tone design.This structure can absorb the stress that standard knot produces at connecting portion owing to being subject to moment of flexure, reduce the probability that bolt produces fatigue damage or crackle, improve the reliability of standard knot connection structure, improve tower crane whole machine balancing and safety, and the light tone design surface increased, contribute to finding the problems such as loosening and dislocation in advance and process in time, ensured the safety of staff further.
Description
Technical field
The utility model belongs to tower crane field, relates to a kind of column crane mast section connection structure absorbing stress, protection bolt.
Background technology
Tower crane (hereinafter referred to as tower machine) is one of indispensable weight-lifting equipment in modern architecture work progress, usually adopt longitudinal tensile high strength bolt to connect to save with fixed standard, standard knot is the backbone of tower machine, carry weight and the load-carrying campaign of machinery itself, therefore the connection of standard knot to high strength bolt has higher requirement.
But tower machine is in the process hoisting weight, because the weight of counterbalanced weight and weight is asymmetric, standard knot will bear Moment.In actual condition, the Moment that tower machine standard knot generally can be subject to for a long time, even likely stressed for a long time on some directions, the high strength bolt of connection standard joint is in long-term alternate tension effect, be easy to produce stress fatigue, serious meeting causes the generation of the situations such as bolt looseness, fracture by fatigue, nut come off, and causes tower machine to tumble, the serious consequence such as to collapse.Investigation display, the problem of standard knot tie bolt is the primary hazard source of leading tower machine accident processed.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of novel tower machine standard knot connection structure, absorb the stress that standard knot produces at connecting portion owing to being subject to moment of flexure, reduce the probability that bolt produces fatigue damage or crackle, improve the reliability of standard knot connection structure.
For achieving the above object, the utility model provides following technical scheme: outside the bolt sleeve column that tower machine standard knot is all, weld one piece of plate iron, described steel plate direction is consistent with sleeve column center and the main chord of standard section line of centres, and described steel plate has a side as contact surface and standard knot joint face level; Upper and lower standard knot is when connecting, and described steel plate contact surface can one_to_one corresponding, can compress mutually, and centered by contact surface, forms symmetrical structure.
Further, reflective membrane or uniform application reflex-reflective material perpendicular to contact surface, and conveniently should be pasted in the side end face of described steel plate.
Further, described steel plate contact surface uniform application fluorescent material or encrimson.
Further, described steel plate can be the metal construction that ladder structure of right angle, rectangular configuration etc. are conveniently processed, met the demands.
The beneficial effects of the utility model are: this structure Absorbable rod stress, and protection bolt, improves the reliability of standard knot; add the area of contact between standard knot; be conducive to the balance improving standard knot, improve tower crane overall security, ensured the safety of staff further.This structure can be modified on the basis that existing standard saves structure, and cost is low, facilitates promotion and application.On the other hand, on the basis of this structure, increase the light tone design of side and bottom surface, be convenient to check the problems such as the loosening of connection structure and dislocation, this is the feature not available for other connection structure, be the method that inspection connecting portion is new, contribute to pinpointing the problems in advance and processing in time, improve the safety of tower machine further.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and beneficial effect clearly, the utility model provides following accompanying drawing to be described:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the steel plate contact surface gap schematic diagram of Fig. 1;
Fig. 3 is the steel plate contact surface dislocation schematic diagram of Fig. 1.
Detailed description of the invention
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
As shown in the figure, a kind of tower crane connection structure described in the utility model, weld one block of right-angled trapezium steel plate 4 outside bolt 2 sleeve column 3 of tower machine standard knot, described trapezoidal steel plate 4 direction is consistent with sleeve column 3 center and main chord of standard section 1 line of centres, described trapezoidal steel plate 4 lower surface 42 and sleeve column 3 bottom surface level, standard knot when connecting, described upper lower steel plate 4 contact surface one_to_one corresponding, can compress mutually, form trapezium structure.
Reflective membrane or uniform application reflex-reflective material are pasted in the side end face 41 of described trapezoidal steel plate 4.Described steel plate 4 lower surface 42 uniform application fluorescent material or encrimson.
The principle of work of this structure is: by the contact of lower steel plate 4 in standard knot connection structure; when standard knot is subject to Moment; connecting portion must be had to be squeezed; the upper lower steel plate 4 at this position receives application force and antagonistic force simultaneously; due to the existence of lower steel plate antagonistic force; pressure bounce is gone back a part; not only can limit sleeve column 3 and the pulling force suffered by bolt 2 position; and absorb a part passes to bolt 2 originally stress by sleeve column 3, serve the effect of protection bolt 2.On the other hand, contacting with each other with stressed of steel plate 4, makes standard knot contact surface extend out, adds the area of joint face, and this stability for tower crane is useful.
When being repeatedly subject to alternate tension, loosening and inconsistent phenomenon likely appears in connecting portion, now goes up lower steel plate 4 and can amplify this phenomenon, so that Timeliness coverage and process.In steel plate 4 lower surface 42, uniform application becomes iridescent or redness, conveniently can observe inconsistent phenomenon; Paste reflective membrane or uniform application reflex-reflective material in the side end face 41 of steel plate 4, be conducive to observing lower steel plate 4 space and inconsistent phenomenon, to judge whether the problem occurring loosening.Staff can stand in the position of safety around tower machine, the basic condition of standard knot connecting portion is can be observed with glass or theodolite, if can see redness or can find fluorescence at low light environment, then the situation possibility that the dislocation of steel plate 4 contact surface 42 occurs is larger; When observing steel plate 4 side 41, find the reflective discontinuous of side or dislocation, then illustrate that this connecting portion occurs that the possibility loosened is larger; Again as the case may be, emphasis inspection and process are carried out to doubtful problem areas, reduce the risk of tower machine use procedure, improve the safety of tower machine.
What finally illustrate is, above preferred embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model by above preferred embodiment, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from the utility model claims limited range.
Claims (4)
1. a column crane mast section connection structure, it is characterized in that: outside the bolt sleeve column that column crane mast section is all, weld one piece of plate iron, described steel plate direction is consistent with sleeve column center and the main chord of standard section line of centres, and described steel plate has a side as contact surface and standard knot joint face level; Upper and lower standard knot is when connecting, and described steel plate contact surface can one_to_one corresponding, can compress mutually, and centered by contact surface, forms symmetrical structure.
2. column crane mast section connection structure according to claim 1, is characterized in that: reflective membrane or uniform application reflex-reflective material perpendicular to contact surface, and conveniently should be pasted in the side end face of described steel plate.
3. column crane mast section connection structure according to claim 1, is characterized in that: described steel plate contact surface uniform application fluorescent material or encrimson.
4. column crane mast section connection structure according to claim 1, is characterized in that: described steel plate can be the metal construction that ladder structure of right angle, rectangular configuration etc. are conveniently processed, met the demands.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420576319.4U CN204198298U (en) | 2014-10-08 | 2014-10-08 | A kind of column crane mast section connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420576319.4U CN204198298U (en) | 2014-10-08 | 2014-10-08 | A kind of column crane mast section connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204198298U true CN204198298U (en) | 2015-03-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420576319.4U Active CN204198298U (en) | 2014-10-08 | 2014-10-08 | A kind of column crane mast section connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204198298U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110642163A (en) * | 2019-10-09 | 2020-01-03 | 湖南中联重科建筑起重机械有限责任公司 | Crane boom and crane |
-
2014
- 2014-10-08 CN CN201420576319.4U patent/CN204198298U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110642163A (en) * | 2019-10-09 | 2020-01-03 | 湖南中联重科建筑起重机械有限责任公司 | Crane boom and crane |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |