CN203006797U - Tower crane and crawling ladder thereof - Google Patents
Tower crane and crawling ladder thereof Download PDFInfo
- Publication number
- CN203006797U CN203006797U CN 201220740879 CN201220740879U CN203006797U CN 203006797 U CN203006797 U CN 203006797U CN 201220740879 CN201220740879 CN 201220740879 CN 201220740879 U CN201220740879 U CN 201220740879U CN 203006797 U CN203006797 U CN 203006797U
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- Prior art keywords
- cat ladder
- guard ring
- curb girder
- tower crane
- crawling ladder
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Abstract
The utility model discloses a crawling ladder of a tower crane. The crawling ladder comprises a crawling ladder frame and a plurality of retainers, wherein the multiple retainers are sequentially arranged along a side beam of the crawling ladder frame; the retainers are rotatably connected with the side beam, and a rotating centerline is parallel with a beam of the crawling ladder frame; and the crawling ladder further comprises a limiting part which is used for limiting relative positions of the retainers and the side beam under the working state of the crawling ladder. Because the retainers are rotatably connected with the side beam of the crawling ladder frame, the retainers can be rotated to be close to the position state of the crawling ladder while the crawling ladder is installed and detached, so that installation and detaching are facilitated. In addition, the utility model discloses a tower crane including the crawling ladder.
Description
Technical field
The utility model relates to the hoisting crane technical field, particularly relates to a kind of cat ladder of tower crane.In addition, the utility model also relates to a kind of tower crane that comprises above-mentioned cat ladder.
Background technology
In engineering construction, can complete simultaneously the vertical lift of weight and the elevator machinery of parallel motion has a lot, and wherein most widely used is tower crane.Tower crane has that frock efficient is high, applied widely, radius of turn is large and the lifting altitude high.
The cat ladder structure is the vitals of tower crane, is also the parts of the frequent contact of operating personnel.Therefore whether brief, the safety of cat ladder structure and for convenience detachly can have a huge impact operation process.
Please refer to Fig. 1 and Fig. 2; Fig. 1 is the structural representation of a kind of cat ladder of tower crane in prior art; Fig. 2 is the partial enlarged drawing at A position in Fig. 1.
The cat ladder of tower crane comprises cat ladder frame 101 and guard ring 102; Wherein cat ladder frame 101 comprises two curb girders that are arranged symmetrically with and is fixedly arranged on crossbeam between two curb girders, is used for climbing up the tower crane machine from ground for the staff; The curb girder of cat ladder frame 101 is formed by two pipe weldings.
In order to guarantee staff's safety, be provided with guard ring 102 in the periphery of cat ladder frame 101, guard ring 102 is rounded structure roughly.Particularly, at two curb girder correspondence position welding stay bearing plates 104 of cat ladder frame 101, the two ends of guard ring 102 are connected with symmetrical fixing stay bearing plate 104 on curb girder by bolt.Guard ring 102 is arranged in order setting along the curb girder of cat ladder frame 101, and the spacing distance between guard ring 102 can be set according to actual conditions.
Wherein, stay bearing plate 104 is for steel plate bending forms, and its bending segment just in time is fastened on the end of guard ring 102, further fixing guard ring 102.
In order to ensure stablizing between guard ring 102, connect by pipe link 103 between guard ring 102, the mode that can be bolted between pipe link 103 and guard ring 102 is fixed.Guard ring 102 and pipe link 103 play the effect of safety precaution barrier together.
Yet still there is following problems in above-mentioned cat ladder in the actual use of engineering:
One when the installation or removal cat ladder, because this cat ladder can't fold, can only carry out installation or removal under the state that cat ladder launches, this will certainly affect the process of integral production construction, and security protection performance is not high yet;
Its two, owing to there is no limiting component, if being connected between guard ring and stay bearing plate is loosening, guard ring may take the bolt that is connected with stay bearing plate as center of gyration rotates, cause the generation of safety misadventure;
Its three, because the cat ladder frame curb girder of this cat ladder is to be formed by two pipe weldings, its processed complex and difficulty are large; Stay bearing plate is formed by steel plate bending, also causes certain difficulty to its processing.
In view of this, how designing a kind of simple in structure, easy accessibility and the high cat ladder of safety and reliability, is the present technical issues that need to address of those skilled in the art.
The utility model content
The purpose of this utility model is to provide a kind of cat ladder of tower crane, and simple in structure, easy accessibility and the safety and reliability of this cat ladder are high.Another purpose of the present utility model is to provide a kind of tower crane that comprises above-mentioned cat ladder.
For solving the problems of the technologies described above, the utility model provides a kind of cat ladder of tower crane, comprises cat ladder frame and a plurality of guard ring, and described a plurality of guard rings are arranged in order setting along the curb girder of described cat ladder frame; Described guard ring and described curb girder are rotationally connected, and its rotary centerline is parallel to the crossbeam of described cat ladder; Described cat ladder also comprises limiting component, is used for limiting the relative position of described guard ring and described curb girder when described cat ladder mode of operation.
Preferably, described guard ring is rotationally connected by rotating shaft and described curb girder.
Preferably, described rotating shaft is specially bolt.
Preferably, described limiting component is steel plate, and is packed on described curb girder, is positioned at the below of described curb girder and described guard ring connection location; During mode of operation, described spacing steel plate contacts and supports described guard ring.
Preferably, described spacing steel plate and described curb girder are by being welded and fixed.
Preferably, described curb girder is steel plate.
Preferably, described curb girder and described crossbeam are by being welded and fixed.
Relative above-mentioned background technology, the cat ladder of the tower crane that the utility model provides comprises cat ladder frame and a plurality of guard ring, described a plurality of guard rings are arranged in order setting along the curb girder of described cat ladder frame; Described guard ring and described curb girder are rotationally connected, and its rotary centerline is parallel to the crossbeam of described cat ladder frame; Described cat ladder also comprises limiting component, is used for limiting the relative position of described guard ring and described curb girder when described cat ladder is in running order.Because the curb girder of guard ring and cat ladder frame is rotationally connected, so when the Assembly ﹠Disassembly cat ladder, guard ring can be turned to the location status of cat ladder, be easy for installation and removal, can not affect the integral production construction yet; When normal working, guard ring is turned to the location status vertical with the cat ladder frame, due to stopping of limiting component, can make guard ring remain on the state vertical with the cat ladder frame, avoid guard ring towards the side rotation near cat ladder frame below, guaranteed reliability and the safety of cat ladder.
The utility model also provides a kind of tower crane, comprises tower body and is arranged on the interior cat ladder of described tower body, and described cat ladder is the described cat ladder of above-mentioned any one.
Because above-mentioned cat ladder has above-mentioned technique effect, also possess above-mentioned technique effect so have the tower crane of this cat ladder, repeat no more.
Description of drawings
Fig. 1 is the structural representation of a kind of cat ladder of tower crane in prior art;
Fig. 2 is the partial enlarged drawing at A position in Fig. 1;
Fig. 3 is the structural representation of the cat ladder of a kind of tower crane provided by the utility model;
Fig. 4 is the partial enlarged drawing at B position in Fig. 3;
Fig. 5 is the structural representation under the cat ladder folded state shown in Fig. 3.
The specific embodiment
Core of the present utility model is to provide a kind of cat ladder of tower crane, and simple in structure, easy accessibility and the safety and reliability of this cat ladder are high.Another core of the present utility model is to provide a kind of tower crane that comprises above-mentioned cat ladder.
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. 3, Fig. 4 and Fig. 5; Fig. 3 is the structural representation of the cat ladder of a kind of tower crane provided by the utility model; Fig. 4 is the partial enlarged drawing at B position in Fig. 3; Fig. 5 is the structural representation under the cat ladder folded state shown in Fig. 3.
In a kind of specific embodiment, the cat ladder of tower crane provided by the utility model comprises cat ladder frame 1; Described cat ladder frame 1 comprises two curb girders 11 that are arranged symmetrically with and is installed in crossbeam 12 between two curb girders 11, can be by the mode of welding, that crossbeam 12 is fixing, not only easy but also reliable with curb girder 11.Described cat ladder frame 1 is used for climbing up tower crane for the staff from ground.
Wherein, curb girder 11 can adopt steel plate, and crossbeam 12 can adopt steel pipe.Certainly, also can adopt as required other version in actual the setting.
Described cat ladder also comprises a plurality of guard rings 2, and a plurality of guard rings 2 are arranged in order setting along the curb girder 11 of cat ladder frame 1, and wherein the distance between guard ring 2 and guard ring 2 can be set as required.Described guard ring 2 also can adopt steel plate, and bending is substantially rounded, is rotationally connected with described curb girder 11.
Can described guard ring 2 be rotationally connected with described curb girder 11 by multiple concrete mode, wherein a kind of easy failure-free is rotationally connected mode for by rotating shaft, guard ring 2 and curb girder 11 being rotationally connected, particularly, described rotating shaft can be bolt, described guard ring 2 can freely rotate relative to cat ladder frame 1 take bolt as center of gyration, and its rotary centerline is parallel to the crossbeam 12 of described cat ladder frame 1.
The curb girder 11 of cat ladder frame 1 is provided with limiting component, is used for limiting the relative position between described guard ring 2 and described cat ladder frame 1 when described cat ladder is in running order.
Particularly, described limiting component can be spacing steel plate 4, be packed in the below of guard ring 2 and curb girder 11 junctions, when described cat ladder is in normal working, be that the relative cat ladder frame 1 of guard ring 2 is when turning to the location status vertical with cat ladder frame 1 (being shown in Fig. 3), described spacing steel plate 4 contacts and supports described guard ring 2 with described guard ring 2, limits simultaneously guard ring 2 further towards the side rotation near cat ladder frame 1 below.
Wherein, described spacing steel plate 4 can be captiveed joint by the mode of welding with described curb girder 11.
Here it is pointed out that above-mentioned below is to be arranged in figure and parts positions each other defines with parts in Fig. 3 to Fig. 5, just clear and convenient for the expression technology scheme.The use that should be appreciated that the described noun of locality should not limit the scope that the application asks for protection.
In order to guarantee the safety and reliability of cat ladder, described cat ladder also comprises a plurality of pipe links 3, and described pipe link 3 is used for connecting a plurality of guard rings 2 along the circumferential arrangement of described guard ring 2.The mode that described pipe link 3 and described guard ring 2 can be bolted is fixed, and can certainly select other captive joint mode.
The number of described pipe link 3 and can setting according to the actual requirements along the circumferential distance of guard ring 2 is as long as can guarantee safety in working process.
In work, in the assembling and unloading process of cat ladder, because guard ring 2 can rotate relative to cat ladder frame 1, so needn't be in the whole process of carrying out its assembling and dismounting under the state of expansion at cat ladder, the relative cat ladder frame 1 of guard ring 2 is rotated counterclockwise, because pipe link 3 is fixing with guard ring 2, so pipe link 3 also rotates relative to cat ladder frame 1 with guard ring 2, when guard ring 2 and pipe link 3 turn to the position (being shown in Fig. 5) of cat ladder, cat ladder is assembled or dismantles, neither can affect the process of integral production construction, also can prevent the generation of safety misadventure.
When being in normal working after cat ladder assembles, guard ring 2 cat ladder frame 1 relative to pipe link 3 can be clockwise to guard ring 2 perpendicular to the location status (being shown in Fig. 3) of cat ladder frame 1, at this moment, spacing steel plate 4 contacts and supports guard ring 2 with guard ring 2, makes guard ring 2 keep the state that is that cat ladder frame 1 is vertical.
Here need to prove, above-mentioned cw and conter clockwise are that the position of diagram in Fig. 3 to Fig. 5 is as the benchmark definition, just in order to explain the clear and convenient of technical scheme.
Here also it is to be noted; in above-mentioned embodiment, the limiting component of restriction guard ring 2 and cat ladder frame 11 relative positions is the spacing steel plate 4 that is arranged on guard ring 2 and cat ladder frame 11 connecting portions belows; in practical operation; those skilled in the art can improve on this basis and extend; as long as in the time of can guaranteeing mode of operation; guard ring 2 is stretched over the position vertical with cat ladder frame 11 and remains on this position and gets final product, and these improvement and extension all should fall in the protection domain of the utility model claim.
The cat ladder that the utility model provides is improved to being rotationally connected of guard ring and cat ladder frame with guard ring and captiveing joint of cat ladder frame on the basis of existing technology, its rotary centerline is parallel to the crossbeam of described cat ladder frame, and be provided with the limiting component that limits guard ring and cat ladder frame relative position, thereby make in the Assembly ﹠Disassembly process of cat ladder, guard ring can be turned to the position of cat ladder frame, facilitate the Assembly ﹠Disassembly of cat ladder, the unlikely construction progress that affects.In addition, described cat ladder simple in structure, tooling cost is low, and exploitativeness is strong.
Except the cat ladder of above-mentioned tower crane, the utility model also provides a kind of tower crane, comprises tower body and is arranged on the interior cat ladder of described tower body, and described cat ladder is specially above-mentioned cat ladder.Other each several part structures of this tower crane please refer to prior art, and this paper repeats no more.
Above tower crane provided by the utility model and cat ladder thereof are 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 method of the present utility model and core concept thereof.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 (8)
1. the cat ladder of a tower crane, comprise cat ladder frame and a plurality of guard ring, and described a plurality of guard rings are arranged in order setting along the curb girder of described cat ladder frame; It is characterized in that, described guard ring and described curb girder are rotationally connected, and its rotary centerline is parallel to the crossbeam of described cat ladder frame; Described cat ladder also comprises limiting component, is used for limiting the relative position of described guard ring and described curb girder when described cat ladder mode of operation.
2. cat ladder as claimed in claim 1, is characterized in that, described guard ring is rotationally connected by rotating shaft and described curb girder.
3. cat ladder as claimed in claim 2, is characterized in that, described rotating shaft is specially bolt.
4. cat ladder as claimed in claim 1, is characterized in that, described limiting component is spacing steel plate, and be packed on described curb girder, is positioned at the below of described curb girder and described guard ring connection location; During mode of operation, described spacing steel plate contacts and supports described guard ring.
5. the cat ladder of stating as claim 4 is characterized in that, described spacing steel plate and described curb girder are by being welded and fixed.
6. cat ladder as described in claim 1 to 5 any one, is characterized in that, described curb girder is steel plate.
7. cat ladder as described in claim 1 to 5 any one, is characterized in that, described curb girder and described crossbeam are by being welded and fixed.
8. a tower crane, comprise tower body and be arranged on the interior cat ladder of described tower body, and it is characterized in that, described cat ladder is the described cat ladder of claim 1 to 7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220740879 CN203006797U (en) | 2012-12-28 | 2012-12-28 | Tower crane and crawling ladder thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220740879 CN203006797U (en) | 2012-12-28 | 2012-12-28 | Tower crane and crawling ladder thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203006797U true CN203006797U (en) | 2013-06-19 |
Family
ID=48598412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220740879 Expired - Fee Related CN203006797U (en) | 2012-12-28 | 2012-12-28 | Tower crane and crawling ladder thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203006797U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342299A (en) * | 2013-07-10 | 2013-10-09 | 嘉兴市华东建设机械有限公司 | Tower section used for tower crane |
| CN105421990A (en) * | 2015-11-26 | 2016-03-23 | 安徽省凯杰机械制造有限公司 | Rapid crane stand column climbing device |
| CN109019374A (en) * | 2018-10-14 | 2018-12-18 | 张家港市天运建筑机械有限公司 | A kind of collapsible climbing device for derrick crane |
| CN109179224A (en) * | 2018-10-14 | 2019-01-11 | 张家港市天运建筑机械有限公司 | A kind of secondary safety applied to derrick crane internal platform entrance |
-
2012
- 2012-12-28 CN CN 201220740879 patent/CN203006797U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103342299A (en) * | 2013-07-10 | 2013-10-09 | 嘉兴市华东建设机械有限公司 | Tower section used for tower crane |
| CN105421990A (en) * | 2015-11-26 | 2016-03-23 | 安徽省凯杰机械制造有限公司 | Rapid crane stand column climbing device |
| CN109019374A (en) * | 2018-10-14 | 2018-12-18 | 张家港市天运建筑机械有限公司 | A kind of collapsible climbing device for derrick crane |
| CN109179224A (en) * | 2018-10-14 | 2019-01-11 | 张家港市天运建筑机械有限公司 | A kind of secondary safety applied to derrick crane internal platform entrance |
| CN109179224B (en) * | 2018-10-14 | 2023-12-01 | 张家港市天运建筑机械有限公司 | Be applied to auxiliary safety mechanism of tower crane inside platform access & exit |
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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: 20130619 Termination date: 20171228 |