CN220745107U - Double-lifting hook safety structure of engine - Google Patents
Double-lifting hook safety structure of engine Download PDFInfo
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- CN220745107U CN220745107U CN202322258742.1U CN202322258742U CN220745107U CN 220745107 U CN220745107 U CN 220745107U CN 202322258742 U CN202322258742 U CN 202322258742U CN 220745107 U CN220745107 U CN 220745107U
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- lifting hook
- engine
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- 238000013461 design Methods 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
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- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a double-lifting hook safety structure of an engine, which comprises a main lifting hook and a safety lifting hook, wherein the position of the main lifting hook is higher than that of the safety lifting hook, and when the engine is lifted, the main lifting hook and the safety lifting hook are simultaneously hooked in lifting lugs of the engine. The double-lifting hook safety structure of the engine can be ensured by the safety lifting hook after the main lifting hook is not timely broken during maintenance, and can avoid safety accidents.
Description
Technical Field
The utility model relates to the field of production design of engines, in particular to a double-lifting hook safety structure of an engine during production of the engine.
Background
The hooks are divided into a single hook and a double hook according to the shape, and are divided into a forged hook and a laminated hook according to the manufacturing method. The single hook is simple to manufacture and convenient to use, but has poor stress condition, and is mostly used in working occasions with lifting capacity of below 80 tons; the lifting capacity is high, and double hooks with symmetrical stress are often adopted. The laminated lifting hook is formed by riveting a plurality of cut steel plates, the whole lifting hook is not damaged when individual plates are cracked, the safety is good, but the self weight is large, and the laminated lifting hook is mostly used on a crane with large lifting weight or for lifting a molten steel containing barrel. The lifting hook is impacted frequently in the operation process and is manufactured by high-quality carbon steel with good toughness.
Hook classification is extremely broad and generally includes: shackle, hanging ring, pear-shaped ring, long hanging ring, combined hanging ring, S-hook, nose hanging hook, american hanging hook and sheep-hook, eye-shaped sliding hook, hanging ring screw with safety clip, chain shackle, and the utility model has the characteristics of being unique, novel, excellent in quality and safe, and is suitable for factories, mines, petroleum, chemical industry, ship code heads and the like. Ensuring the safety, the quality safety coefficient and the static load to be 3 times. The lifting capacity is from 5 tons to 150 tons.
The technical requirements of the lifting hook are as follows: the technical files such as qualification certificate of the manufacturing plant can be used for purchasing the lifting hook; important departments purchase hooks such as: railway, harbor, etc., the hooks are shipped from the factory with strict inspection (flaw detection), such as claw hooks. The lifting hook has the defect of affecting the safety use performance; the defect of the lifting hook cannot be repaired; the surface of the lifting hook should be smooth, and the defects of cracks, folds, acute angles, burrs, stripping, overburning and the like cannot be caused. Two proper positions can be selected at the shortest distance of the opening of the lifting hook to print marks which are not easy to wear, and the distance of the marks is measured and used as a basis for detecting whether the opening degree changes or not in use. The lifting hook material can be made of 20 high-quality carbon steel or DG20Mn, DG34CrMo and other special lifting hook materials by forging, and the casting lifting hook is strictly forbidden. The technical condition of the self-made lifting hook made of common carbon steel A3 and C3 or 16Mn low alloy steel is in accordance with the regulations of GB 10051.1-88-GB 10051.5-88 (new standard: GB 10051.1-2010-GB 10051.5-2010) that the longitudinal axis of the plate hook sheet is required to be positioned in the rolling direction of the steel plate, and the hook sheet is not allowed to be spliced. The plate hook sheet is riveted by using countersunk rivets, and the high-stress bending part where the plate hook is contacted with the lifting point of the lifting object is not connected by using the rivets. The plate hook lamination sheets are not allowed to be welded in a totally-enclosed mode, and only intermittent welding is allowed. The hooks subjected to overload test should be scrapped, etc.
At present, various lifting hooks for an engine production line are mostly low-carbon steel forgings, and have clear requirements on the processing technology, thickness, safety coefficient and the like of the lifting hooks, wherein the design of the lifting hooks is required to be subjected to stress calculation, yield strength calculation, CAE check, CAE mode calculation, fatigue failure analysis, lifting reasonable analysis and the like, and the processing is also required to be subjected to key evaluation design, safety calculation, production and processing technology and the like, so that the lifting application fracture risk brought by the design is evaluated and eliminated to the greatest extent, and the safety first place is met. Because the hidden danger checking method of the lifting hook in the production workshop is limited, hidden danger or risk caused by stress fatigue cannot be checked in time, and the single lifting hook structure still has the risk of accidents such as fracture and the like.
The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The utility model aims to provide a double-lifting hook safety structure of an engine, which can be ensured by a safety lifting hook after a main lifting hook is not timely broken during overhauling, and can avoid safety accidents.
In order to achieve the above purpose, the utility model provides a double-lifting hook safety structure of an engine, which comprises a main lifting hook and a safety lifting hook, wherein the position of the main lifting hook is higher than that of the safety lifting hook, and when the engine is lifted, the main lifting hook and the safety lifting hook are simultaneously hooked in lifting lugs of the engine.
In a preferred embodiment, the main lifting hook bears the weight of the engine when lifted, and the safety lifting hook does not bear the weight of the engine.
In a preferred embodiment, the lifting capacity of the main lifting hook and the safety lifting hook are the same, and both can meet the overall requirement of the engine to be lifted.
In a preferred embodiment, the safety coefficient of the main hook and the safety hook are the same, and both can meet the whole of the engine to be hoisted.
In a preferred embodiment, the difference in height of the main hooks above the safety hooks is controlled within safe impact calculations.
In a preferred embodiment, the primary hooks are larger in size than the safety hooks.
In a preferred embodiment, the double-lifting hook safety structure of the engine further comprises a main lifting hook, wherein the upper part of the main lifting hook is connected with the main lifting hook, and the lifting capacity and the safety coefficient of the main lifting hook can meet the overall weight of the engine to be lifted.
In a preferred embodiment, the double-lifting hook safety structure of the engine further comprises a safety lifting ring, the upper portion of the safety lifting hook is connected with the safety lifting ring, and the lifting capacity and the safety coefficient of the safety lifting ring can meet the overall weight of the engine to be lifted.
Compared with the prior art, the double-lifting hook safety structure of the engine has the following beneficial effects: the main lifting hook is larger than the safety lifting hook, the position of the main lifting hook is lower than that of the safety lifting hook, and when the main lifting hook is arranged in the lifting hole, the main lifting hook is stressed and plays a role in lifting; the safety lifting hook is lower than the main lifting hook in position, so that the safety lifting hook is not subjected to lifting force and is used as a standby lifting hook; the height difference that the safety lifting hook is lower than the main lifting hook is controlled in safe impact calculation, namely the impulse of the free falling body of the engine from the height difference can not cause the fracture of the safety lifting lug, and the lifting unbalance of the engine can not be caused due to the small height difference. According to the double-lifting hook safety structure, on the premise that hidden danger cannot be found due to fatigue cracks after the main lifting hook is used for a long time, the main lifting hook breaks, the safety lifting hook immediately acts, lifting safety is guaranteed, and lifting accidents are prevented. When the main lifting hook is found to be broken, the whole lifting hook needs to be replaced by a new double lifting hook. Safety accidents caused by hoisting fracture can be avoided.
Drawings
FIG. 1 is a schematic diagram of a front view of a dual hook safety structure according to one embodiment of the present utility model;
FIG. 2 is a perspective view of a dual hook safety structure according to one embodiment of the present utility model;
FIG. 3 is a schematic perspective view of another perspective view of a dual hook safety structure according to one embodiment of the present utility model;
FIG. 4 is a schematic side view of a dual hook safety structure according to one embodiment of the utility model;
fig. 5 is a schematic rear view of a double hook safety structure according to an embodiment of the present utility model.
The main reference numerals illustrate:
1-a main hanging ring; 2-a safe hanging ring; 3-a main hook; 4-a safety hook.
Detailed Description
The following detailed description of embodiments of the utility model is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the utility model is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.
As shown in fig. 1 to 5, a double-hook safety structure of an engine according to a preferred embodiment of the present utility model includes a main hook 3 and a safety hook 4, the position of the main hook 3 is higher than that of the safety hook 4, and when the engine is hoisted, the main hook 3 and the safety hook 4 are simultaneously hooked in a lifting lug of the engine.
In some embodiments, the main lifting hook 3 bears the weight of the engine when lifted, and the safety lifting hook 4 does not bear the weight of the engine.
In some embodiments, the lifting capacity of the main lifting hook 3 and the safety lifting hook 4 is the same, and both can meet the whole of the engine to be lifted.
In some embodiments, the safety coefficient of the main hook 3 and the safety hook 4 is the same, and both can satisfy the whole of the engine to be hoisted.
In some embodiments, the height difference h of the main hook 3 above the safety hook 4 is controlled within safe impact calculations.
In some embodiments, the size of the main hook 3 is larger than the size of the safety hook 4.
In some embodiments, the double-lifting hook safety structure of the engine further comprises a main lifting ring 3, the upper portion of the main lifting hook 3 is connected with the main lifting ring 3, and the lifting capacity and the safety coefficient of the main lifting ring 3 can meet the overall weight of the engine to be lifted.
In some embodiments, the double-hook safety structure of the engine further comprises a safety hanging ring 4, the upper portion of the safety hanging ring 4 is connected with the safety hanging ring 4, and the lifting capacity and the safety coefficient of the safety hanging ring 4 can meet the overall weight of the engine to be lifted.
The principle of the double hook safety structure of the engine of this embodiment is approximately as follows: two or more lifting holes of the production line engine are simultaneously lifted by the main lifting hook 3 and the safety lifting hook 4, namely, a single lifting hole is simultaneously lifted by the main lifting hook 3 and the safety lifting hook 4. The single main lifting hook 3 and the single safety lifting hook 4 can meet the lifting capacity, and the safety coefficient is rich; the lifting ring of the main lifting hook 3 and the lifting ring of the safety lifting hook 4 can meet the lifting capacity, and the safety coefficient is rich; namely, the lifting capacity can be met by lifting by the main lifting hook 3 alone or by lifting by the safety lifting hook 4 alone.
The main hook 3 of this embodiment is larger than the safety hook 4 and the main hook 3 is positioned somewhat lower than the safety hook 4. When the main lifting hook 3 is arranged in the lifting hole, the main lifting hook is stressed to perform a lifting function; the safety lifting hook 4 is lower than the main lifting hook 3 in position, so that the safety lifting hook is not subjected to lifting force and is used as a standby lifting hook; the height difference h of the safety lifting hook 4 lower than the main lifting hook 3 is controlled in safe impact calculation, namely, the impulse of the engine falling freely from the height difference h can not cause the fracture of the safety lifting lug, and the lifting unbalance of the engine can not be caused due to the small height difference. According to the double-lifting hook safety structure, on the premise that hidden danger cannot be found due to fatigue cracks after the main lifting hook 3 is used for a long time, the main lifting hook 3 breaks, the safety lifting hook 4 acts immediately, lifting safety is guaranteed, and lifting accidents are prevented. When the main hook 3 is found to be broken, the whole hook needs to be replaced by a new double hook.
In summary, the double-hook safety structure of the engine has the following advantages: the main lifting hook is larger than the safety lifting hook, the position of the main lifting hook is lower than that of the safety lifting hook, and when the main lifting hook is arranged in the lifting hole, the main lifting hook is stressed and plays a role in lifting; the safety lifting hook is lower than the main lifting hook in position, so that the safety lifting hook is not subjected to lifting force and is used as a standby lifting hook; the height difference that the safety lifting hook is lower than the main lifting hook is controlled in safe impact calculation, namely the impulse of the free falling body of the engine from the height difference can not cause the fracture of the safety lifting lug, and the lifting unbalance of the engine can not be caused due to the small height difference. According to the double-lifting hook safety structure, on the premise that hidden danger cannot be found due to fatigue cracks after the main lifting hook is used for a long time, the main lifting hook breaks, the safety lifting hook immediately acts, lifting safety is guaranteed, and lifting accidents are prevented. When the main lifting hook is found to be broken, the whole lifting hook needs to be replaced by a new double lifting hook. Safety accidents caused by hoisting fracture can be avoided.
The foregoing descriptions of specific exemplary embodiments of the present utility model are presented for purposes of illustration and description. It is not intended to limit the utility model to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the utility model and its practical application to thereby enable one skilled in the art to make and utilize the utility model in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the utility model be defined by the claims and their equivalents.
Claims (4)
1. The double-lifting hook safety structure of the engine is characterized by comprising a main lifting hook and a safety lifting hook, wherein the position of the main lifting hook is higher than that of the safety lifting hook, and when the engine is lifted, the main lifting hook and the safety lifting hook are simultaneously hooked in a lifting lug of the engine;
wherein the height difference of the main lifting hook higher than the safety lifting hook is controlled in a safe impact calculation;
the size of the main lifting hook is larger than that of the safety lifting hook;
wherein the double hook safety structure further comprises:
the upper part of the main lifting hook is connected with the main lifting ring, and the lifting capacity and the safety coefficient of the main lifting ring can meet the overall weight of the engine to be lifted; and
the safety lifting ring, the upper portion of safety lifting hook with safety lifting ring connects, the hoisting capacity and the factor of safety lifting ring can satisfy wait to hoist and mount the whole weight of engine.
2. The dual hook safety structure of an engine of claim 1, wherein the main hook bears the weight of the engine when hoisted, and the safety hook does not bear the weight of the engine.
3. The double-hook safety structure of an engine according to claim 1, wherein the main hook and the safety hook have the same lifting capacity and are capable of satisfying the entire weight of the engine to be lifted.
4. The double-hook safety structure of an engine according to claim 1, wherein the safety coefficient of the main hook and the safety hook is the same and both can satisfy the entire weight of the engine to be hoisted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322258742.1U CN220745107U (en) | 2023-08-22 | 2023-08-22 | Double-lifting hook safety structure of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322258742.1U CN220745107U (en) | 2023-08-22 | 2023-08-22 | Double-lifting hook safety structure of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220745107U true CN220745107U (en) | 2024-04-09 |
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ID=90553960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322258742.1U Active CN220745107U (en) | 2023-08-22 | 2023-08-22 | Double-lifting hook safety structure of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220745107U (en) |
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2023
- 2023-08-22 CN CN202322258742.1U patent/CN220745107U/en active Active
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