CN108002270A - A kind of pulley gear and crane for crane - Google Patents
A kind of pulley gear and crane for crane Download PDFInfo
- Publication number
- CN108002270A CN108002270A CN201710991629.0A CN201710991629A CN108002270A CN 108002270 A CN108002270 A CN 108002270A CN 201710991629 A CN201710991629 A CN 201710991629A CN 108002270 A CN108002270 A CN 108002270A
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- Prior art keywords
- rope
- gear
- pulley
- arc
- fixed pulley
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/04—Pulley blocks or like devices in which force is applied to a rope, cable, or chain which passes over one or more pulleys, e.g. to obtain mechanical advantage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gears, Cams (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a kind of pulley gear and crane for crane, belong to power jacking field.Pulley gear includes pulley bracket, fixed pulley and gear rope component, pulley bracket includes two blocks of side plates that parallel face is set, fixed pulley is arranged between two blocks of side plates, the axial direction of fixed pulley is vertical with two blocks of side plates, gear rope component includes two pieces of arc rope blocking plates and at least one first gear rope component, two pieces of arc rope blocking plates, which correspond, to be arranged on two blocks of side plates, and two pieces of arc rope blocking plates are between two blocks of side plates, when steel wire rope comes off from the grooving of fixed pulley, arc rope blocking plate can play barrier effect, prevent steel wire rope from falling on pulley spindle.First gear rope component includes first gear rope bar, the both ends of first gear rope bar are connected on two pieces of arc rope blocking plates, minimum range between first gear rope component and fixed pulley is less than the diameter of steel wire rope, then first gear rope component can stop steel wire rope, prevent steel cable slot disengaging.
Description
Technical field
The present invention relates to hoisting machinery field, more particularly to a kind of pulley gear and crane for crane.
Background technology
Crane be it is a kind of hang transshipment cargo or the equipment of personnel, pulley gear is the portion of its main passing power
Part, steel wire rope realize the function of lifting deflecting through pulley blocks.The main hook of crane uses more multiplying power pulley blocks to lift cargo,
Auxiliary hook is using single multiplying power pulley, for hanging small tonnage cargo or personnel's raising, in steel wire rope scrolling, due to the steel wire of auxiliary hook
Restrict as single multiplying power, easily swung under the influence of wind load and inertia, in turn result in steel wire rope bounce, deflection so that steel wire rope from
It is disengaged from the groove in rope race.
A fixed pulley is usually provided with the top of the arm of crane, steel wire rope extends to the top of arm along arm
The fixed pulley is bypassed afterwards, and is connected with suspension hook.
In the implementation of the present invention, inventor has found that the prior art has at least the following problems：
Crane would generally carry out luffing operation, and arm can do elevating movement, due to during crane amplitude variation, hanging
Cornerite between the steel wire rope and fixed pulley on arm top can change, and when arm angle with horizontal plane is larger, cornerite is larger,
When arm angle with horizontal plane is smaller, cornerite is smaller.Steel wire rope is easier to rub with side plate in this process, while compared with
Easily deviate from from the grooving of fixed pulley, so as to influence the normal work of crane.
The content of the invention
The problem of being easily disengaged from the groove to solve steel wire rope in the prior art, influencing crane work, the embodiment of the present invention provides
A kind of pulley gear and crane for crane.The technical solution is as follows：
In a first aspect, the present invention provides a kind of pulley gear for crane, including pulley bracket and fixed pulley, institute
Stating pulley bracket includes two blocks of side plates that parallel face is set, and the fixed pulley is arranged between two blocks of side plates, described fixed
The axial direction of pulley is vertical with two blocks of side plates, and the pulley gear further includes gear rope component, and the gear rope component includes two pieces
Arc rope blocking plate and at least one first gear rope component；
Two pieces of arc rope blocking plates are corresponded and are arranged on two blocks of side plates, and two pieces of arc rope blocking plates position
Between two blocks of side plates, two pieces of arc rope blocking plates are arranged symmetrically on the fixed pulley, two pieces of arcs gear rope
The center of circle of plate is located on the pivot center of the fixed pulley,
Orthographic projection of the arc rope blocking plate on the side plate is located at orthographic projection of the fixed pulley on the side plate
Outside, the fixed pulley axially and radially on, the gap between the fixed pulley and each arc rope blocking plate is small
In the radius for the steel wire rope being wrapped on the fixed pulley；
The first gear rope component includes first gear rope bar, and the both ends of the first gear rope bar are connected to described two pieces
On arc rope blocking plate, and the first gear rope bar is parallel with the axis of the fixed pulley, the first gear rope component with it is described fixed
Minimum range between pulley is less than the diameter of the steel wire rope.
Further, the gear rope component includes two first gear rope components, in the circumferential direction of the fixed pulley, the arc
Central angle corresponding to the part between described two first gear rope components of shape rope blocking plate is 90 °~120 °.
Further, the gear rope component further includes at least one second gear rope component, the second gear rope parts space
It is arranged on the part between described two first gear rope components of the arc rope blocking plate, each second gear rope portion
Part includes the second gear rope bar, and the second gear rope bar is parallel with the first gear rope bar.
Further, the structure of the second gear rope component is identical with the structure of the first gear rope component.
Further, the gear rope component further includes at least one third gear rope component, and the third gear rope component includes
Third gear rope bar, the both ends of the third gear rope bar are connected on two blocks of side plates, and the third gear rope bar and institute
Multiple first gear rope bars are stated to be located on same circumference, the circumference positioned at the third gear rope bar and the first gear rope bar it
Between minor arc corresponding to central angle be 15 °~40 °.
Further, the third gear rope component further includes setting and is rotationally coaxially set on the third gear rope bar
Third gear rope pipe, the length of the third gear rope pipe is identical with the spacing of described two side sheet rooms, the third gear rope component
Minimum range between the fixed pulley is less than the diameter of the steel wire rope.
Further, the first gear rope component further includes be rotationally coaxially set on the first gear rope bar
One gear rope pipe, the spacing between the length of the first gear rope pipe and two pieces of arc rope blocking plates are identical.
Further, radially outward gradually increase of the spacing of two pieces of arc rope blocking plates along the fixed pulley.
Further, the pulley bracket further includes installing plate, and two blocks of side plates are vertically set on the installing plate,
The fixed pulley is between two pieces of arc rope blocking plates and the installing plate.
Second aspect, the present invention provides a kind of crane, the arm top of the crane is set just like claim 1
~9 any one of them pulley gears.
The beneficial effect that technical solution provided in an embodiment of the present invention is brought is：
Keep off rope component by setting, which includes two pieces of arc rope blocking plates, arc rope blocking plate on side plate just
Projection is located at outside orthographic projection of the fixed pulley on side plate, fixed pulley axially and radially on, fixed pulley and each arc are kept off
Gap between rope plate is respectively less than the radius for the steel wire rope being wrapped on fixed pulley, then when steel wire rope takes off from the grooving of fixed pulley
When falling, arc rope blocking plate can play barrier effect, prevent steel wire rope from falling on pulley spindle.And the gear rope component further includes at least
One first gear rope component, first gear rope component include first gear rope bar, and the both ends of first gear rope bar are connected to two pieces of arcs
On shape rope blocking plate, the minimum range between first gear rope component and fixed pulley is straight less than the steel wire rope being wrapped on fixed pulley
Footpath, then first gear rope component can stop steel wire rope, prevent steel cable slot disengaging.The pulley gear effectively can prevent steel wire rope from taking off
Groove is fallen into pulley spindle after can preventing steel cable slot disengaging again, and the pulley device structure is simple, is easy to use.
Brief description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, other can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is a kind of structure diagram of pulley gear for crane provided in an embodiment of the present invention；
Fig. 2 is the structure diagram of another pulley gear for being used for crane provided in an embodiment of the present invention；
Fig. 3 is the Section A-A schematic diagram of Fig. 2；
Fig. 4 is the section B-B figure of Fig. 2；
Fig. 5 is the C-C sectional views of Fig. 2；
Fig. 6 is a kind of part-structure schematic diagram of crane provided by the invention.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 is a kind of structure diagram of pulley gear for crane provided in an embodiment of the present invention, such as Fig. 1 institutes
Show, which includes pulley bracket and fixed pulley 1, and pulley bracket includes two blocks of side plates 2 that parallel face is set, fixed pulley
1 is arranged between two blocks of side plates 2, and the axial direction of fixed pulley 1 is vertical with two blocks of side plates 2, and pulley gear further includes gear rope component 3, gear
Rope component 3 includes two pieces of arc rope blocking plates and at least one first gear rope component.
Further, pulley bracket further includes installing plate 4, and two blocks of side plates 2 are vertically set on installing plate 4,1, fixed pulley
Between two pieces of arc rope blocking plates 3 and installing plate 4.
Fig. 2 is the structure diagram of another pulley gear for being used for crane provided in an embodiment of the present invention, and Fig. 3 is figure
2 Section A-A schematic diagram, as shown in Figures 2 and 3, in the present embodiment, gear rope component 3 includes two pieces of 31 Hes of arc rope blocking plate
Two first gear rope components 32.
Two pieces of arc rope blocking plates 31, which correspond, to be arranged on two blocks of side plates 2, and two pieces of arc rope blocking plates 31 are located at two pieces
Between side plate 2, two pieces of arc rope blocking plates 31 are arranged symmetrically on fixed pulley 1, and the center of circle O of two pieces of arc rope blocking plates 31 is positioned at fixed sliding
On the pivot center of wheel 1.
Orthographic projection of the arc rope blocking plate 31 on side plate 2 is located at outside orthographic projection of the fixed pulley 1 on side plate 2, is determining cunning
Wheel 1 axially and radially on, the gap between fixed pulley 1 and each arc rope blocking plate 31, which is respectively less than, to be wrapped on fixed pulley 1
The radius of steel wire rope 5.
First gear rope component 32 includes first gear rope bar 32a, and the both ends of first gear rope bar 32a are connected to two pieces of arcs
On rope blocking plate 31, and first gear rope bar 32a is parallel with the axis of fixed pulley 1, between first gear rope component 32 and fixed pulley 1 most
Small distance is less than the diameter for the steel wire rope 3 being wrapped on fixed pulley 1.
The embodiment of the present invention keeps off rope component by setting, which includes two pieces of arc rope blocking plates, arc rope blocking plate
Orthographic projection on side plate is located at outside orthographic projection of the fixed pulley on side plate, fixed pulley axially and radially on, fixed pulley
Gap between each arc rope blocking plate is respectively less than the radius for the steel wire rope being wrapped on fixed pulley, then when steel wire rope is from determining cunning
When coming off in the grooving of wheel, arc rope blocking plate can play barrier effect, prevent steel wire rope from falling on pulley spindle.And the gear rope group
Part further includes at least one first gear rope component, and first gear rope component includes first gear rope bar, the both ends difference of first gear rope bar
It is connected on two pieces of arc rope blocking plates, the minimum range between first gear rope component and fixed pulley, which is less than, to be wrapped on fixed pulley
The diameter of steel wire rope, then first gear rope component can stop steel wire rope, prevent steel cable slot disengaging.The pulley gear can effectively be prevented
Only steel cable slot disengaging is fallen into pulley spindle after can preventing steel cable slot disengaging again, and the pulley device structure is simple, is easy to use.
Specifically, two first gear rope components 32 in the embodiment of the present invention are separately positioned on the two of arc rope blocking plate 31
End, in the circumferential direction of fixed pulley 1, the circle corresponding to the part between two first gear rope components 31 of arc rope blocking plate 31
Heart angle α is 90 °~120 °.
It should be noted that in actual use, the specific location of two first gear rope components 31 can also basis
The size of winding angle of the steel wire rope 5 in fixed pulley 1 is configured, then the angular dimension of above-mentioned central angle alpha can basis
Actual needs is chosen.In the present embodiment, winding angle of the steel wire rope 5 in fixed pulley is 80 °, arc rope blocking plate 31
The central angle alpha corresponding to part between two first gear rope components 32 is 120 °.
In another embodiment of the invention, gear rope component 3 can also include a first gear rope component 32.
Further, as shown in figure 3, radially outward gradually increase of the spacing of two pieces of arc rope blocking plates 31 along fixed pulley 1.
In the present embodiment, the opposite one side of two pieces of arc rope blocking plates 31 is arc surface.When steel wire rope is from the grooving 1a of fixed pulley 1
After jumping out, arc rope blocking plate 31 can stop that steel wire rope 5 is fallen on the jackshaft 1b of fixed pulley 1, simultaneously as arc rope blocking plate
31 one side contacted with steel wire rope 5 is arc surface so that steel wire rope 5 can slip into grooving 1a along the arc surface, and not
Steel wire rope 5 can be worn.
Further, the both ends of first gear rope bar 32a are equipped with screw thread, are correspondingly arranged on arc rope blocking plate 31 and first gear
Restrict the through hole 31b that bar 32a matches, and the tapped through hole 2b to match with first gear rope bar 32a is correspondingly arranged on side plate 2, the
One gear rope bar 32a is fixed on side plate by nut 6 and positioning pin 7.
Further, first gear rope component 32 further includes first be rotationally coaxially set on first gear rope bar 32a
Gear rope pipe 32b, the length of first gear rope pipe 32b is identical with the spacing L between two pieces of arc rope blocking plates 31, first gear rope pipe 32b with
Minimum range between fixed pulley 1 is less than the diameter of steel wire rope 5, then first gear rope pipe 32b can stop steel wire rope 5 from fixed pulley
Jumped out in 1 grooving 1a.
Specifically, the outer surface of first gear rope pipe 32b is smooth surface, and first gear rope pipe 32b can be rotated, and work as steel
When cord 5 is contacted with first gear rope pipe 32b, abrasions of the first gear rope pipe 32b to steel wire rope 5 can be reduced.
Further, in another embodiment provided by the invention, gear rope component 3 can also include at least one second gear
Rope component, second gear rope parts space are arranged on the part between two first gear rope components 32 of arc rope blocking plate 31
On, each second gear rope component includes second gear rope bar, and second gear rope bar is parallel with first gear rope bar 32a, and second gear rope group
The structure of part is identical with the structure of first gear rope component.By setting second gear rope component further to hinder steel wire rope
Gear, prevents steel cable slot disengaging.
Fig. 4 is the section B-B figure of Fig. 2, as shown in figure 4, gear rope component 3 further includes third gear rope component 33, third gear rope
Component 33 includes third gear rope bar 33a, and the both ends of third gear rope bar 33a, which are connected to, to be arranged on two blocks of side plates 2, such as Fig. 2
Shown, third gear rope bar 33a and first gear rope bar 32a is located on same circumference, and the center of circle of the circumference is located at the rotation of fixed pulley 1
On axis, the central angle corresponding to the minor arc between third gear rope bar 33a and first gear rope bar 32a of the circumference is that β is
15 °~40 °.
It should be noted that in actual use, the specific location of third gear rope component 33 can also be according to steel wire
The size of 5 winding angle in fixed pulley 1 of rope is configured, and specifically, can be arranged on entering for steel wire rope 5 and be slided at rope with fixed
Take turns where 1 tangent point in the radial direction, then the angular dimension of above-mentioned central angle β can be selected according to actual needs
Take.In the present embodiment, winding angle of the steel wire rope 5 in fixed pulley 1 is 80 °, third gear rope bar 33a and first gear rope bar
The central angle β corresponding to minimum arc length between 32a is 30 °.
Further, the both ends of third gear rope bar 33a are equipped with screw thread, are provided with side plate 2 and third gear rope bar 33a phases
The tapped through hole matched somebody with somebody, third gear rope bar 33a are fixed on side plate 2 by nut 6 and positioning pin 7.Specifically, can also be in nut
Spring shim is set between 6 and side plate 2.
Further, as shown in figure 4, third gear rope component 33, which further includes, is rotationally coaxially set in third gear rope bar
Third gear rope pipe 33b on 33a, the length of third gear rope pipe 33b is identical with the spacing between two side plates 2, third gear component 33
Minimum range between fixed pulley 1 is less than the diameter of steel wire rope 5.
Fig. 5 is the C-C sectional views of Fig. 2, as shown in figure 5, being spaced in the one side by proximal panel 2 of each arc rope blocking plate 31
Equipped with multiple mounting groove 31a, side plate 2 is equipped with and the one-to-one through hole 2a of multiple mounting groove 31a, arc rope blocking plate 31 and side
Plate 2 is connected by bolt 34.
In the present embodiment, by being first installed on two pieces of arc rope blocking plates on two blocks of side plates by multiple bolts respectively,
Then between first gear rope pipe and second gear rope pipe being placed on two pieces of arc rope blocking plates, first gear rope bar and second gear rope bar point
Not Chuan Guo first gear rope pipe and second gear rope pipe, and the both ends of first gear rope bar and second gear rope bar are consolidated by nut and positioning pin
It is scheduled on outside side plate, then between third gear rope pipe is placed on two blocks of side plates, third gear rope bar is passed through third gear rope bar, and the 3rd
The both ends of gear rope bar are fixed on outside side plate by nut and positioning pin, to complete to keep off the installation of rope component.
Preferably, the diameter D of steel wire rope 5 is arrived with first gear rope component 32, second gear rope component and third gear rope component 33
The relation of the minimum range L of fixed pulley 1 is:
As D=18mm, L=4mm；As D=22mm, L=4mm；During D=24mm, L=5mm；During D=28mm, L=
6mm；During D=32mm, L=6mm；During D=34mm, L=7mm.
An embodiment of the present invention provides a kind of crane, the arm top of the crane is provided with as in above-described embodiment
Pulley gear, Fig. 6 is a kind of part-structure schematic diagram of crane provided in an embodiment of the present invention, as shown in fig. 6, the crane
8 include arm 81 and suspension hook 82, the pulley gear 9 being provided with arm 81 in above-described embodiment, by the peace in pulley gear 9
Loading board is installed on arm 81, and in the present embodiment, the cornerite between the steel wire rope 5 and fixed pulley 1 on 81 top of arm is θ, steel
Cord 5 is wrapped in the grooving of fixed pulley 1 of the pulley gear 9, can be to steel by the first gear rope component kept off in component 9 of restricting
Cord 5 is stopped, prevents steel wire rope 5 from deviating from grooving, two arc gear ropes by keeping off two arc rope blocking plates in component 9 of restricting
Plate can be wear-resistant material, reduce abrasion of the arc rope blocking plate to steel wire rope 5.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of pulley gear for crane, including pulley bracket and fixed pulley, the pulley bracket includes parallel face
The two blocks of side plates set, the fixed pulley are arranged between two blocks of side plates, the axial direction of the fixed pulley and two pieces of sides
Plate is vertical, it is characterised in that the pulley gear further includes gear rope component, the gear rope component include two pieces of arc rope blocking plates and
At least one first gear rope component；
Two pieces of arc rope blocking plates are corresponded and are arranged on two blocks of side plates, and two pieces of arc rope blocking plates are located at institute
Between stating two blocks of side plates, two pieces of arc rope blocking plates are arranged symmetrically on the fixed pulley, two pieces of arc rope blocking plates
The center of circle is located on the pivot center of the fixed pulley,
Orthographic projection of the arc rope blocking plate on the side plate is located at outside orthographic projection of the fixed pulley on the side plate,
The fixed pulley axially and radially on, the gap between the fixed pulley and each arc rope blocking plate, which is respectively less than, to be wound
The radius of steel wire rope on the fixed pulley；
The first gear rope component includes first gear rope bar, and the both ends of the first gear rope bar are connected to two pieces of arcs
On rope blocking plate, and the first gear rope bar is parallel with the axis of the fixed pulley, the first gear rope component and the fixed pulley
Between minimum range be less than the steel wire rope diameter.
2. pulley gear according to claim 1, it is characterised in that the gear rope component includes two the first gear rope portions
Part, in the circumferential direction of the fixed pulley, the part institute between described two first gear rope components of the arc rope blocking plate
Corresponding central angle is 90 °~120 °.
3. pulley gear according to claim 2, it is characterised in that the gear rope component further includes at least one second gear
Restrict component, the second gear rope parts space be arranged on the arc rope blocking plate between described two first gear rope components
Part on, each second gear rope component includes the second gear rope bar, the second gear rope bar and the first gear rope
Bar is parallel, and the minimum range between the second gear rope component and the fixed pulley is less than the diameter of the steel wire rope.
4. pulley gear according to claim 1, it is characterised in that the gear rope component further includes at least one third gear
Rope component, the third gear rope component include third gear rope bar, and the both ends of the third gear rope bar are connected to described two pieces
On side plate, the third gear rope bar is located on same circumference with the first gear rope bar, and the center of circle of the circumference is positioned at described fixed
On the pivot center of pulley, corresponding to the minor arc between the third gear rope bar and the first gear rope bar of the circumference
Central angle be 15 °~40 °.
5. pulley gear according to claim 4, it is characterised in that the third gear rope component further includes rotationally same
Axle sleeve is located at the third gear rope pipe on the third gear rope bar, between the length of the third gear rope pipe and described two side sheet rooms
Away from identical, the minimum range between the third gear rope component and the fixed pulley is less than the diameter of the steel wire rope.
6. according to Claims 1 to 5 any one of them pulley gear, it is characterised in that the first gear rope component further includes
The first gear rope pipe being rotationally coaxially set on the first gear rope bar, the length of the first gear rope pipe with described two pieces
Spacing between arc rope blocking plate is identical.
7. according to Claims 1 to 5 any one of them pulley gear, it is characterised in that between two pieces of arc rope blocking plates
Away from the radially outward gradually increase along the fixed pulley.
8. according to Claims 1 to 5 any one of them pulley gear, it is characterised in that two pieces of arc rope blocking plates pass through
It is bolted on two blocks of side plates.
9. according to Claims 1 to 5 any one of them pulley gear, it is characterised in that the pulley bracket further includes installation
Plate, two blocks of side plates are vertically set on the installing plate, and the fixed pulley is located at two pieces of arc rope blocking plates and described
Between installing plate.
10. a kind of crane, it is characterised in that the arm top of the crane is set just like any one of claim 1~9 institute
The pulley gear stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710991629.0A CN108002270B (en) | 2017-10-23 | 2017-10-23 | Pulley device for crane and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710991629.0A CN108002270B (en) | 2017-10-23 | 2017-10-23 | Pulley device for crane and crane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108002270A true CN108002270A (en) | 2018-05-08 |
| CN108002270B CN108002270B (en) | 2019-12-31 |
Family
ID=62051058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710991629.0A Active CN108002270B (en) | 2017-10-23 | 2017-10-23 | Pulley device for crane and crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108002270B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200981799Y (en) * | 2006-10-24 | 2007-11-28 | 河南巨人起重机有限公司 | Rope escape proof electric hoist |
| CN201865599U (en) * | 2010-12-02 | 2011-06-15 | 威海市海泰起重机械有限公司 | Anti-loosening device for wire rope pulley |
| AU2016203330A1 (en) * | 2010-08-25 | 2016-06-16 | Thomas Robert Barry | A block and tackle assembly |
| CN205616443U (en) * | 2015-11-09 | 2016-10-05 | 徐州重型机械有限公司 | Novel quick wire rope handling mechanism of lifting hook |
| CN106081977A (en) * | 2016-06-27 | 2016-11-09 | 张七龙 | Collapsible house ornamentation crane |
| CN206419453U (en) * | 2016-12-20 | 2017-08-18 | 辽宁石油机械制造有限公司 | A kind of rig high-altitude fixed pulley structure |
-
2017
- 2017-10-23 CN CN201710991629.0A patent/CN108002270B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200981799Y (en) * | 2006-10-24 | 2007-11-28 | 河南巨人起重机有限公司 | Rope escape proof electric hoist |
| AU2016203330A1 (en) * | 2010-08-25 | 2016-06-16 | Thomas Robert Barry | A block and tackle assembly |
| CN201865599U (en) * | 2010-12-02 | 2011-06-15 | 威海市海泰起重机械有限公司 | Anti-loosening device for wire rope pulley |
| CN205616443U (en) * | 2015-11-09 | 2016-10-05 | 徐州重型机械有限公司 | Novel quick wire rope handling mechanism of lifting hook |
| CN106081977A (en) * | 2016-06-27 | 2016-11-09 | 张七龙 | Collapsible house ornamentation crane |
| CN206419453U (en) * | 2016-12-20 | 2017-08-18 | 辽宁石油机械制造有限公司 | A kind of rig high-altitude fixed pulley structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108002270B (en) | 2019-12-31 |
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