CN214087324U - Light slewing mechanism for hoisting heavy equipment - Google Patents
Light slewing mechanism for hoisting heavy equipment Download PDFInfo
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- CN214087324U CN214087324U CN202023001848.6U CN202023001848U CN214087324U CN 214087324 U CN214087324 U CN 214087324U CN 202023001848 U CN202023001848 U CN 202023001848U CN 214087324 U CN214087324 U CN 214087324U
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- hoisting
- lifting hook
- outer sleeve
- lifting
- slewing
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Abstract
The utility model relates to a heavy equipment lifts by crane the mechanism, in particular to a light-duty rotation mechanism that is used for heavy equipment to lift by crane. The lifting device comprises a lifting hook, a bearing outer sleeve, a thrust ball bearing, a rotary outer sleeve and a lifting fixing mechanism, wherein the lower end of the rotary outer sleeve is provided with a mounting hole, one end of the lifting hook is inserted into the mounting hole, and the end part of the lifting hook is connected with the lifting fixing mechanism; the thrust ball bearing is sleeved on the lifting hook, and the bearing outer sleeve is sleeved on the outer side of the thrust ball bearing and is in sliding connection with the mounting hole of the rotary outer sleeve. The utility model discloses satisfy the demand of lifting by crane of large-scale underwater equipment to light-weighted structure realizes the function of the unloaded free gyration of lifting hook, the automatic locking of heavy load gyration.
Description
Technical Field
The utility model relates to a heavy equipment lifts by crane the mechanism, in particular to a light-duty rotation mechanism that is used for heavy equipment to lift by crane.
Background
At present, the ground hoisting and sea surface hoisting of domestic and foreign underwater robots basically adopt a conventional hoisting hook structure, a slewing bearing is designed at the hook head position for adjusting the direction of a hoisting hook, so that the hoisting hook is conveniently connected with equipment to be hoisted, and the hoisting hook can freely rotate no matter the hoisting hook is in no load or in full load under the structure. However, for large-sized underwater equipment with large size, large slenderness ratio and hundred-ton level, the lifting hook is required to have a rotation function when no load exists so as to be convenient for butt joint with the equipment, and meanwhile, the lifting hook is required to be stably lifted without rotation in the lifting process. Therefore, it is necessary to develop a hook swing mechanism suitable for hoisting large-scale underwater equipment, so as to realize free swing of the hook in an idle state and locking of the swing function in a heavy-load state.
SUMMERY OF THE UTILITY MODEL
To the problem, the utility model aims to provide a light-duty rotation mechanism for heavy equipment lifts by crane to satisfy the demand of lifting by crane of large-scale underwater equipment, with lightweight structure, realize the function of the unloaded free gyration of lifting hook, heavy load gyration locking.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a light slewing mechanism for hoisting heavy equipment comprises a lifting hook, a bearing outer sleeve, a thrust ball bearing, a slewing outer sleeve and a hoisting fixing mechanism, wherein the lower end of the slewing outer sleeve is provided with a mounting hole, one end of the lifting hook is inserted into the mounting hole, and the end part of the lifting hook is connected with the hoisting fixing mechanism; the thrust ball bearing is sleeved on the lifting hook, and the bearing outer sleeve is sleeved on the outer side of the thrust ball bearing and is in sliding connection with the mounting hole of the rotary outer sleeve.
The lifting hook is sleeved with a rubber spring positioned at the lower end of the bearing outer sleeve, and the rubber spring is abutted to the inner spigot of the rotary outer sleeve.
And a spring locking nut in threaded connection with the lifting hook is arranged above the thrust ball bearing.
A bottom sliding bearing and a top sliding bearing are arranged in the mounting hole of the rotary outer sleeve, wherein the bottom sliding bearing is fixedly connected with the rotary outer sleeve and is in clearance fit with the lifting hook; the outer ring of the top sliding bearing is in clearance fit with the rotary outer sleeve, and the inner ring of the top sliding bearing is connected with the spring locking nut.
The lifting fixing mechanism comprises a fixing block outer sleeve and two lifting fixing blocks, wherein the two lifting fixing blocks are buckled on the outer sides of the lifting hooks, the fixing block outer sleeve is sleeved on the outer sides of the two lifting fixing blocks to lock the two lifting fixing blocks, and therefore the lifting hooks are fixed.
The inner wall of the hoisting fixing block is provided with a trapezoidal surface I, and the outer circumference of the upper end of the lifting hook is provided with a trapezoidal surface II meshed with the trapezoidal surface I.
When the lifting hook is in no-load state, a gap is reserved between the lower end of the lifting fixing mechanism and the rotary outer sleeve, and the lifting hook can rotate;
when the lifting hook is loaded, the lower end of the lifting fixing mechanism is in contact with the rotary outer sleeve, and the lifting hook is locked.
And a lifting shaft is arranged at the upper end of the rotary outer sleeve and is connected with a lifting cable.
The utility model discloses an advantage does with positive effect:
1. the utility model realizes bearing load and free rotation of the hook under the no-load state; under the load state, the structural part bears the weight of, and the gyration function is locked.
2. The utility model discloses because of adopting light load thrust ball bearing, compare with the revolution mechanic of traditional heavy load lifting hook, reduced overall dimension and structure weight in the very big degree.
3. In the load state of the utility model, the rotary structural part bears most of load, and the thrust ball bearing only needs to bear the load generated by the deformation of the rubber spring, so the size of the bearing is small, and the overall external dimension of the rotary structure is small; the utility model discloses can realize lightweight structure, satisfy the function of empty load free gyration, heavy load gyration automatic locking simultaneously.
Drawings
FIG. 1 is a schematic structural diagram of a light swing mechanism for heavy equipment hoisting according to the present invention;
FIG. 2 is a cross-sectional axial view of a light swing mechanism for heavy equipment lifting in accordance with the present invention;
fig. 3 is a schematic structural view of a lifting fixing block of the utility model;
fig. 4 is a schematic diagram of the no-load state of the present invention;
fig. 5 is a schematic view of the loading state of the present invention.
In the figure: 1 is a lifting hook; 2 is a bottom sliding bearing; 3 is a rubber spring; 4, a bearing outer sleeve; 5 is a thrust ball bearing; 6 is a spring lock nut; 7 is a top sliding bearing; 8, a fixed block is sleeved outside; 9 is a hoisting fixed block; 10 is a rotary outer sleeve; 11 is a lifting shaft; and 12 is a hoisting cable.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-2, the utility model provides a light-duty swing mechanism for heavy equipment lifting, which comprises a lifting hook 1, a bearing outer sleeve 4, a thrust ball bearing 5, a swing outer sleeve 10 and a lifting fixing mechanism, wherein the lower end of the swing outer sleeve 10 is provided with a mounting hole, one end of the lifting hook 1 is inserted into the mounting hole and the end part is connected with the lifting fixing mechanism; the thrust ball bearing 5 is sleeved on the lifting hook 1, and the bearing outer sleeve 4 is sleeved on the outer side of the thrust ball bearing 5 and is in sliding connection with the mounting hole of the rotary outer sleeve 10. The upper end of the rotary outer sleeve 10 is provided with a lifting shaft 11, and the lifting shaft 11 is connected with a lifting cable 12.
The embodiment of the utility model provides an in, the cover is equipped with the rubber spring 3 that is located bearing housing 4 lower extreme on the lifting hook 1, the bottom surface of rubber spring 3 and the tang butt in gyration overcoat 10, and the top surface receives the extrusion of bearing housing 4. And a spring locking nut 6 in threaded connection with the lifting hook 1 is arranged above the thrust ball bearing 5.
In the embodiment of the utility model, a bottom sliding bearing 2 and a top sliding bearing 7 are arranged in the mounting hole of the rotary outer sleeve 10, wherein the bottom sliding bearing 2 is connected with the bottom end face of the rotary outer sleeve 10 by bolts and is in clearance fit with the lifting hook 1; the outer ring of the top sliding bearing 7 is in clearance fit with the rotary outer sleeve 10, and the inner ring of the top sliding bearing 7 is fixedly connected with the top surface of the spring locking nut 6 by bolts.
As shown in fig. 1-2, in the embodiment of the present invention, the hoisting fixing mechanism includes a fixing block jacket 8 and two hoisting fixing blocks 9, wherein the two hoisting fixing blocks 9 are fastened to the outside of the hook 1, and the fixing block jacket 8 is sleeved on the outside of the two hoisting fixing blocks 9 to lock the two hoisting fixing blocks 9, thereby fixing the hook 1.
Further, as shown in fig. 3, a trapezoidal surface i is provided on the inner wall of the lifting fixed block 9, and a trapezoidal surface ii engaged with the trapezoidal surface i is provided on the outer circumference of the upper end of the lifting hook 1.
When the lifting hook 1 is in no-load, the rubber spring 3 deforms less, a gap is reserved between the lower end of the lifting fixed block 9 and the rotary outer sleeve 10, and the lifting hook 1 can rotate freely; when the lifting hook 1 is loaded, the rubber spring 3 deforms greatly, the lower end of the lifting fixed block 9 is in contact with the rotary outer sleeve 10, the load is borne by a structural part contact surface, the rotary function of the thrust ball bearing 5 is invalid, and the lifting hook 1 is locked.
The utility model discloses a theory of operation is:
the action process is as follows: the lifting hook 1 is contacted with the top surface of the thrust ball bearing 5 through a spring locking nut 6; the rubber spring 3 is contacted with the bottom surface of the thrust ball bearing 5 through the bearing outer sleeve 4; the trapezoidal surfaces of the two hoisting fixed blocks 9 are attached to the trapezoidal surface at the top of the lifting hook 1, and the two hoisting fixed blocks 9 are wrapped internally by the fixed block jacket 10, so that the hoisting fixed blocks 9 are prevented from falling off, and a limiting effect is realized; the hoisting shaft 11 passes through the annular hole of the hoisting cable 12 and is fixedly connected with the rotary outer sleeve 10.
As shown in fig. 4, during no load, the rubber spring 3 only needs to bear the dead weight of structural members such as the lifting hook 1, the deformation of the rubber spring 3 is very small, a gap of about 10mm exists between the lifting fixed block 9 and the rotary outer sleeve 10, and the lifting hook 1 can freely rotate under the action of the thrust ball bearing 5.
As shown in fig. 5, when a load is applied, the rubber spring 3 deforms under a large load, so that the gap between the fixed lifting block 9 and the rotating outer sleeve 10 is eliminated, the fixed lifting block 9 and the rotating outer sleeve 10 directly contact each other, and the rotation is locked.
By designing the size of the rubber spring 3, when the load is less than 1t, a gap exists between the lifting fixed block 9 and the rotary outer sleeve 10, and the lifting hook 1 rotates freely; when the load is larger than 1t, the hoisting fixed block 9 is directly contacted with the rotary outer sleeve 10, and the lifting hook 1 is rotationally locked. At this time, no matter the load is dozens of tons or even hundreds of tons, the pressure bearing of the thrust ball bearing 5 is always about 1t, namely the pressure of the rubber spring 3 deforming 10 mm.
The utility model discloses a light-duty rotation mechanism for heavy equipment lifts by crane can be used to the ground of main equipment and lifts by crane or when the sea lifts by crane, has the condition of requirement to lifting hook angle or hook mouth direction under, this structure has realized the free rotation of lifting hook under the no-load state, and gyration function locking during the heavy load has satisfied the gyration demand before lifting hook and equipment are connected, has avoided the equipment rotation that the in-process of lifting by crane arouses because of the lifting hook rotation simultaneously. Overall structure can bear hundred tons of grades of heavy load, and the lifting hook size weight that possesses the gyration function of the same type is all very big, the utility model discloses with compact, lightweight structure, realized the function of the no-load gyration of lifting hook, heavy load direction locking simultaneously.
The above description is only for the embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, extension, etc. made within the spirit and principle of the present invention are all included in the protection scope of the present invention.
Claims (8)
1. A light slewing mechanism for hoisting heavy equipment is characterized by comprising a lifting hook (1), a bearing outer sleeve (4), a thrust ball bearing (5), a slewing outer sleeve (10) and a hoisting fixing mechanism, wherein the lower end of the slewing outer sleeve (10) is provided with a mounting hole, one end of the lifting hook (1) is inserted into the mounting hole, and the end part of the lifting hook is connected with the hoisting fixing mechanism; the thrust ball bearing (5) is sleeved on the lifting hook (1), and the bearing outer sleeve (4) is sleeved on the outer side of the thrust ball bearing (5) and is in sliding connection with the mounting hole of the rotary outer sleeve (10).
2. A light swing mechanism for hoisting heavy equipment according to claim 1 characterized in that the lifting hook (1) is sleeved with a rubber spring (3) at the lower end of the bearing housing (4), and the rubber spring (3) is abutted with the inner rabbet of the swing housing (10).
3. A light weight slewing mechanism for hoisting heavy equipment according to claim 2, characterized in that a spring lock nut (6) in threaded connection with the hook (1) is provided above the thrust ball bearing (5).
4. A light weight slewing mechanism for hoisting heavy equipment according to claim 3, characterized in that a bottom sliding bearing (2) and a top sliding bearing (7) are arranged in the mounting hole of the slewing sleeve (10), wherein the bottom sliding bearing (2) is fixedly connected with the slewing sleeve (10) and is in clearance fit with the lifting hook (1); the outer ring of the top sliding bearing (7) is in clearance fit with the rotary outer sleeve (10), and the inner ring of the top sliding bearing (7) is connected with the spring locking nut (6).
5. A light swing mechanism for hoisting heavy equipment as claimed in claim 1, characterized in that said hoisting fixture comprises a fixture block housing (8) and two hoisting fixture blocks (9), wherein the two hoisting fixture blocks (9) are fastened to the outer side of said hook (1), said fixture block housing (8) is mounted to the outer side of the two hoisting fixture blocks (9) to lock the two hoisting fixture blocks (9), thereby fixing said hook (1).
6. A light-weight slewing mechanism for hoisting heavy equipment according to claim 5, characterized in that the inner wall of the hoisting fixed block (9) is provided with a trapezoidal surface I, and the outer circumference of the upper end of the lifting hook (1) is provided with a trapezoidal surface II engaged with the trapezoidal surface I.
7. A light weight slewing mechanism for hoisting heavy equipment according to claim 5, characterized in that when the lifting hook (1) is unloaded, a gap is left between the lower end of the hoisting fixture and the slewing sleeve (10), and the lifting hook (1) is rotatable;
when the lifting hook (1) is loaded, the lower end of the lifting fixing mechanism is in contact with the rotary outer sleeve (10), and the lifting hook (1) is locked.
8. A light weight slewing mechanism for hoisting of heavy equipment according to claim 1, characterized in that the upper end of the slewing sleeve (10) is provided with a hoisting shaft (11), said hoisting shaft (11) being connected to a hoisting cable (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023001848.6U CN214087324U (en) | 2020-12-14 | 2020-12-14 | Light slewing mechanism for hoisting heavy equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023001848.6U CN214087324U (en) | 2020-12-14 | 2020-12-14 | Light slewing mechanism for hoisting heavy equipment |
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| Publication Number | Publication Date |
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| CN214087324U true CN214087324U (en) | 2021-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202023001848.6U Active CN214087324U (en) | 2020-12-14 | 2020-12-14 | Light slewing mechanism for hoisting heavy equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112456310A (en) * | 2020-12-14 | 2021-03-09 | 中国科学院沈阳自动化研究所 | Light slewing mechanism for hoisting heavy equipment |
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2020
- 2020-12-14 CN CN202023001848.6U patent/CN214087324U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112456310A (en) * | 2020-12-14 | 2021-03-09 | 中国科学院沈阳自动化研究所 | Light slewing mechanism for hoisting heavy equipment |
| CN112456310B (en) * | 2020-12-14 | 2024-05-17 | 中国科学院沈阳自动化研究所 | Light slewing mechanism for hoisting heavy equipment |
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