CN202924629U - Luffing jib tower crane and suspended platform thereof - Google Patents
Luffing jib tower crane and suspended platform thereof Download PDFInfo
- Publication number
- CN202924629U CN202924629U CN 201220632866 CN201220632866U CN202924629U CN 202924629 U CN202924629 U CN 202924629U CN 201220632866 CN201220632866 CN 201220632866 CN 201220632866 U CN201220632866 U CN 201220632866U CN 202924629 U CN202924629 U CN 202924629U
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- hurdle
- hangs
- bolt
- tower crane
- arm tower
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Abstract
The utility model discloses a luffing jib tower crane and a suspended platform thereof. The suspended platform is an integral frame formed by welding angle steel, wherein diagonal support rods are arranged at two side surfaces of the frame, a steel plate net welded with the frame into a whole is arranged at the bottom of the frame, a bolt assembly of the suspended platform, which is connected with a main body structure, comprises a bolt, a slotted nut and a cotter pin, a radial through hole is formed in the tail end of a screw of the bolt, and the cotter pin penetrates through the through hole in the bolt from a groove in the slotted nut to lock the slotted nut fastened in place. The suspended platform is stable in structure and is less prone to deform; and a connecting structure is safe and reliable, and potential safety hazards in a use process can be maximally eliminated. The utility model also discloses a luffing jib tower crane with the suspended platform.
Description
Technical field
The utility model relates to technical field of engineering machinery, and particularly arm tower crane hangs the hurdle.The utility model also relates to and is provided with the described arm tower crane that hangs the hurdle.
Background technology
Hanging the hurdle is to be engaged in the structural unit of operation, maintenance, inspection and repairing work on arm tower crane for relevant personnel.
At present, hanging hurdle version and hanging form that the hurdle is connected with the crane arm agent structure of arm tower crane has multiplely, and the hurdle structure of hanging that has adopts and walks on stage and the form of guardrail combination, some employing one-piece constructions.
Please refer to Fig. 1, Fig. 2, Fig. 1 is a kind of hurdle structural representation that typically hangs in prior art; Fig. 2 is the single nut bolt assembly schematic diagram that the hurdle is connected with agent structure that hangs shown in Figure 1; Fig. 3 is the double nuts bolt assembly schematic diagram that the hurdle is connected with agent structure that hangs shown in Figure 1.
As shown in the figure, in existing design, hang hurdle 1 and adopt the guardrail one-piece construction of walking on stage, guardrail 1-1 directly with walk on stage the 1-2 weld together, after guardrail 1-1 is generally the steel pipe bending, welding forms, and the 1-2 that walks on stage adopts angle steel and Plate Welding to form, and the bottom surface is expanded metal lath 1-3.
Hang the array configuration that bolt 2, spring washer 3, single nut 4 are arranged in the connection structure of hurdle and crane arm, the array configuration that bolt 2, spring washer 3 and double nuts 4 are also arranged, wherein the array configuration of double nuts adopts two nuts that the top is tightened, make tie bolt tension and nut pressurized in the section of screwing, thereby the vertical compression that consists of threaded connection pair plays locking effect, and there is following defective in it:
One, hanging hurdle framework material therefor has angle steel, steel pipe and steel plate, and the specification kind is many, and needs to weld after the steel pipe bending, and processing technology is relatively loaded down with trivial details.
They are two years old, although the type of attachment of single nut and double nuts is simple, but be only applicable to load than the pulsation-free occasion, in the occasion of load variations and existence vibration, the phenomenon that nut can occur becoming flexible, and the increase along with period of service, the probability of nut loosening can increase greatly, needs timely examination and maintenance, again with loosening nut screwing clamping, cause hanging the situation that the hurdle comes off otherwise the loosening even connection structure inefficacy of bolt connection just might occur, safety misadventure occurs.
Hang the another kind of form on hurdle for walking on stage and the railing assembling form, railing is fastenedly connected with the rear employing of the assembling clamping plate of walking on stage and is integral body.The hurdle that hangs of this form is not comparatively ideal version, and owing to adopting the clamping plate fixed railing, in use railing has loosening possibility, has equally potential safety hazard.
Therefore, how improving the stability of hanging the hurdle structure, eliminate safe hidden trouble, is the present technical issues that need to address of those skilled in the art.
The utility model content
The first purpose of the present utility model is to provide a kind of arm tower crane and hangs the hurdle.This hangs the hurdle Stability Analysis of Structures, and is not yielding, and connection structure is safe and reliable, can eliminate to greatest extent the potential safety hazard in use procedure.
The second purpose of the present utility model is to provide a kind of described arm tower crane that hangs the hurdle that is provided with.
In order to realize above-mentioned the first purpose, the utility model provides a kind of arm tower crane to hang the hurdle, and this hangs the hurdle and adopts angle steel to be welded into general frame, and the two sides of described framework are provided with diagonal struts, and the bottom of described framework is provided with and is welded as with it whole expanded metal lath.
Preferably, describedly hang the bolt assembly that the hurdle is connected with agent structure and comprise bolt, fluted nut and spring cotter, the screw rod end of described bolt offers radial direction through hole, and described spring cotter is locked the fastening fluted nut that puts in place from the through hole that the groove on fluted nut passes on bolt.
Preferably, the groove on described fluted nut is uniformly distributed in the midway location on its each limit, end.
Preferably, described bolt is hex bolt, and described fluted nut is hexagonal nut.
Preferably, described bolt assembly is provided with spring washer.
Preferably, described first angle steel and second angle steel of attaching parts for vertically arranging that hangs hurdle and agent structure, the end of each described angle steel is equipped with bolt hole.
Preferably, described the first angle steel extends upward from the Yi Jiaochu of described bracketplant, and described the second angle steel extends upward from described middle part of hanging long limit, hurdle one side.
Preferably, described agent structure is the crane arm of hoisting crane, and the described hurdle that hangs is connected with the otic placode of crane arm by bolt assembly.
For realizing above-mentioned the second purpose, the utility model provides a kind of arm tower crane, comprises the hoisting crane body and hangs the hurdle, and the described hurdle that hangs is that the described arm tower crane of above-mentioned any one hangs the hurdle.
The hurdle structure of hanging provided by the utility model all adopts angle steel to be welded into general frame, the bottom surface adopts expanded metal lath form and under(-)chassis to be welded as integral body, material specification is few, be convenient to tissue production, good manufacturability, hanging the two sides, hurdle increases diagonal struts, has improved integral rigidity, makes general frame not yielding.
In a kind of preferred version, the described bolt assembly that hangs the hurdle connection structure adopts the combination of screw rod eye bolt, fluted nut and spring cotter, with fluted nut is fastening put in place after, penetrate spring cotter and fully open, nut can not be rotated, thereby reach the purpose of connection structure long time stability, can eliminate to greatest extent the potential safety hazard in use procedure.
Arm tower crane provided by the utility model is provided with the above-mentioned hurdle that hangs, and because the above-mentioned hurdle that hangs has above-mentioned technique effect, is provided with this arm tower crane that hangs the hurdle and also should possesses corresponding technique effect.
Description of drawings
Fig. 1 is a kind of hurdle structural representation that typically hangs in prior art;
Fig. 2 is the single nut bolt assembly schematic diagram that the hurdle is connected with agent structure that hangs shown in Figure 1;
Fig. 3 is the double nuts bolt assembly schematic diagram that the hurdle is connected with agent structure that hangs shown in Figure 1;
Fig. 4 hangs the structural representation of a kind of specific embodiment on hurdle for arm tower crane that the utility model provides;
Fig. 5 is the structural representation that hangs the bolt assembly that the hurdle is connected with agent structure shown in Figure 4.
In Fig. 1 to Fig. 3:
1. hang hurdle 1-1. guardrail 1-2. 1-3. expanded metal lath 2. bolt 3. spring washer 4. nuts of walking on stage
In Fig. 4, Fig. 5:
10. hang hurdle 10-1. framework 10-2. diagonal struts 10-3. expanded metal lath 10-4. first angle steel 10-5. the second angle steel 20. bolt assembly 20-1. bolt 20-2. spring washer 20-3. fluted nut 20-4. spring cotters
The specific embodiment
In order to make those skilled in the art person understand better the utility model scheme, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 4, Fig. 4 hangs the structural representation of a kind of specific embodiment on hurdle for arm tower crane that the utility model provides.
In a kind of specific embodiment, the arm tower crane that the utility model provides hangs hurdle 10, the main angle steel that adopts is welded into the framework 10-1 that is on the whole rectangular shape, and respectively being provided with a diagonal struts 10-2 in the two sides of framework, the bottom of framework is for being welded as with it whole expanded metal lath 10-3.
Hang first angle steel 10-4 and the second angle steel 10-5 of attaching parts for vertically arranging of hurdle 10 and agent structure, the end of each angle steel is equipped with two bolt hole (not shown)s, wherein the first angle steel 10-4 extends upward from the Yi Jiaochu that hangs the hurdle, and the second angle steel 10-5 extends upward from the middle part of hanging long limit, hurdle one side.
Particularly, the aforementioned body structure is the crane arm of hoisting crane, hangs hurdle 10 and is connected with the otic placode of crane arm by bolt assembly.
Adopt the angle steel welding to form due to whole, so material specification is few, is convenient to tissue production, good manufacturability is hung the diagonal struts 10-2 that 10 two sides, hurdle increase, and can significantly improve integral rigidity, makes general frame not yielding.
Please refer to Fig. 5, Fig. 5 is the structural representation that hangs the bolt assembly that the hurdle is connected with agent structure shown in Figure 4.
Hang the bolt assembly 20 that hurdle 10 is connected with agent structure and comprise hex bolt 20-1, spring washer 20-2, hexagon slotted nut 20-3 and spring cotter 20-4, the screw rod end of bolt 20-1 offers radial direction through hole.
During installation, first bolt 20-1 is passed the through hole of connected piece, is screwed into fluted nut 20-3 after adding spring washer 20-2, until fluted nut 20-3 is fastening put in place after, penetrate spring cotter 20-4 and fully open, fluted nut 20-3 is locked can not rotate.Locking owing to having adopted mechanical fixed part (spring cotter) to lock, thus make connection safe and reliable, effectively stable, eliminated to greatest extent to connect to become flexible and even hung the possibility that the hurdle comes off.
It is only a kind of preferred version of the present utility model that above-mentioned arm tower crane hangs the hurdle, specifically is not limited to this, can make according to actual needs pointed adjustment on this basis, thereby obtains different embodiments.For example, adopt angle steel to be welded into the general frame of other shapes with hanging the hurdle, perhaps adopt other mechanical part connecting hanging hurdles and agent structure etc., because mode in the cards is more, here with regard to casehistory no longer one by one.
Except the above-mentioned hurdle that hangs, the utility model also provides a kind of arm tower crane, comprises the hoisting crane body and hangs the hurdle, and the described hurdle that hangs is that arm tower crane mentioned above hangs the hurdle, and all the other structures please refer to prior art, and this paper repeats no more.
Above to arm tower crane provided by the utility model and hang the hurdle and be described in detail.Used specific case herein principle of the present utility model and embodiment are set forth, the explanation of above embodiment just is used for helping to understand core concept of the present utility model.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (9)
1. an arm tower crane hangs the hurdle, it is characterized in that, this hangs the hurdle and adopts angle steel to be welded into general frame, and the two sides of described framework are provided with diagonal struts, and the bottom of described framework is provided with and is welded as with it whole expanded metal lath.
2. arm tower crane according to claim 1 hangs the hurdle, it is characterized in that, describedly hang the bolt assembly that the hurdle is connected with agent structure and comprise bolt, fluted nut and spring cotter, the screw rod end of described bolt offers radial direction through hole, and described spring cotter is locked the fastening fluted nut that puts in place from the through hole that the groove on fluted nut passes on bolt.
3. arm tower crane according to claim 2 hangs the hurdle, it is characterized in that, the groove on described fluted nut is uniformly distributed in the midway location on its each limit, end.
4. arm tower crane according to claim 3 hangs the hurdle, it is characterized in that, described bolt is hex bolt, and described fluted nut is hexagonal nut.
5. the described arm tower crane of according to claim 2 to 4 any one hangs the hurdle, it is characterized in that, described bolt assembly is provided with spring washer.
6. arm tower crane according to claim 2 hangs the hurdle, it is characterized in that, described first angle steel and second angle steel of attaching parts for vertically arranging that hangs hurdle and agent structure, and the end of each described angle steel is equipped with bolt hole.
7. arm tower crane according to claim 6 hangs the hurdle, it is characterized in that, described the first angle steel extends upward from the described Yi Jiaochu that hangs the hurdle, and described the second angle steel extends upward from described middle part of hanging long limit, hurdle one side.
8. according to claim 6 or 7 described arm tower cranes hang the hurdle, it is characterized in that, described agent structure is the crane arm of hoisting crane, and the described hurdle that hangs is connected with the otic placode of crane arm by bolt assembly.
9. an arm tower crane, comprise the hoisting crane body and hang the hurdle, and it is characterized in that, the described hurdle that hangs is that the claims 1 to the 8 described arm tower crane of any one hangs the hurdle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220632866 CN202924629U (en) | 2012-11-26 | 2012-11-26 | Luffing jib tower crane and suspended platform thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220632866 CN202924629U (en) | 2012-11-26 | 2012-11-26 | Luffing jib tower crane and suspended platform thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202924629U true CN202924629U (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220632866 Expired - Fee Related CN202924629U (en) | 2012-11-26 | 2012-11-26 | Luffing jib tower crane and suspended platform thereof |
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| Country | Link |
|---|---|
| CN (1) | CN202924629U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269660A (en) * | 2017-08-04 | 2017-10-20 | 海盐联众紧固件有限公司 | A kind of vapour nut for automobile |
-
2012
- 2012-11-26 CN CN 201220632866 patent/CN202924629U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107269660A (en) * | 2017-08-04 | 2017-10-20 | 海盐联众紧固件有限公司 | A kind of vapour nut for automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20130508 Termination date: 20171126 |