CN111591879B - Novel lifeboat static load test method - Google Patents
Novel lifeboat static load test method Download PDFInfo
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- CN111591879B CN111591879B CN202010465127.6A CN202010465127A CN111591879B CN 111591879 B CN111591879 B CN 111591879B CN 202010465127 A CN202010465127 A CN 202010465127A CN 111591879 B CN111591879 B CN 111591879B
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- lifting
- lifeboat
- rope
- lifting rope
- test
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/22—Rigid members, e.g. L-shaped members, with parts engaging the under surface of the loads; Crane hooks
- B66C1/34—Crane hooks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C9/00—Life-saving in water
- B63C9/02—Lifeboats, life-rafts or the like, specially adapted for life-saving
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a novel lifeboat static load test method, which is characterized by comprising the following steps: the specific test steps are as follows: after the truck crane lifts the hanging beam and the counterweight frame to a specified height, the other two steel wire ropes on the hanging beam are pulled to the lifeboat davit, the load is slowly transferred to the lifeboat davit from the truck crane by using the tension meter, the requirement of loading time is met, the lifeboat davit is required to have no permanent deformation or damage after the test is finished, and the welding seam between the lifeboat davit base and the structure is intact; the test method improves the accuracy of the test and ensures the safety of the test.
Description
Technical Field
The invention relates to the field of lifeboat static load tests, in particular to a novel lifeboat static load test method.
Background
In the manufacturing process of marine products, ship products, cranes and cranes, a great deal of equipment is always required to carry out load tests, and a corresponding load test method is required; for some more expensive devices, the safety needs to be considered.
Disclosure of Invention
The invention aims to provide a novel lifeboat static load test method, and solves the problems of poor accuracy and low test safety of a general equipment static load test.
In order to solve the technical problems, the technical scheme of the invention is as follows: a novel lifeboat static load test method has the innovation points that: the specific test steps are as follows:
s1: preparation and inspection of test equipment: checking whether the arrangement and installation of the lifeboat davit meet the requirements of approved design drawings, and checking a corresponding qualification certificate of the lifeboat davit; preparing a plurality of steel wire ropes, a plurality of shackles and a hanging beam; strictly and practically measuring and recording the weights of the used steel wire rope, the shackle and the hanging beam, calculating the weight required by the counterweight, preparing two counterweight frames according with the weight, confirming the weight by weighing, and carrying out calibration on site; preparing a truck crane and a tension sensor;
s2: connection of test devices: connecting the steel wire rope with the counterweight frame by adopting shackles, forming a first lifting rope on the counterweight frame, and respectively connecting the first lifting rope formed by the two counterweight frames and the steel wire rope on the lifting beam by adopting shackles; two ends of the first lifting rope are connected to two ends of the lifting beam respectively by adopting a steel wire rope to form a first lifting rope; then respectively connecting two shackles connected with the counterweight frame by adopting two steel wire ropes to form a third lifting rope and a fourth lifting rope;
s3: start of the static load test: firstly, connecting a tension sensor to a hook head of a truck crane, hooking a second lifting rope by using the hook head of the truck crane with the tension sensor, slowly lifting, lifting a lifting beam, slowly lifting two counterweight frames away from the ground by lifting the first lifting rope through the lifting beam, and ensuring the balance of the counterweight frames on the lifting beam;
s4: load transfer: the working personnel pulls the third lifting rope and the fourth lifting rope to the lifesaving tappet, after the safety is confirmed, the counterweight frame is slowly lowered through the automobile lifting hook head, and the position of the counterweight frame is adjusted to prevent collision; gradually transferring the load to the lifeboat davit through the third lifting rope and the fourth lifting rope until the lifeboat davit completely bears the weight of the counterweight frame, and finishing the load for 5 minutes;
s5: load unloading after the test: after the truck crane finishes the test, lifting the second lifting rope again, and gradually transferring the load of the counterweight frame to the truck crane until the truck crane finishes bearing the load of the counterweight frame; then, the third lifting rope and the fourth lifting rope are pulled to leave the lifeboat davit by workers; finally, the truck crane slowly moves downwards to put down the counterweight frame and the hanging beam to the ground;
s6: and (3) testing results: and after the balance weight frame is unloaded, visually checking whether the lifeboat keel frame structure has permanent deformation or damage, and if not, finishing the test.
Further, the hoisting positions of the third hoisting rope and the fourth hoisting rope on the lifeboat davit are not more than 1.5m away from the front end of the lifeboat davit and away from the front end.
Further, steel wire protection rubber is arranged at the contact position of the third lifting rope and the fourth lifting rope with the lifting position of the lifeboat frame.
The invention has the advantages that:
1) after the truck crane lifts the hanging beam and the counterweight frame to a specified height, the other two steel wire ropes on the hanging beam are pulled to the lifeboat davit, the load is slowly transferred to the lifeboat davit from the truck crane by using the tension meter, the requirement of loading time is met, the lifeboat davit is required to have no permanent deformation or damage after the test is finished, and the welding seam between the lifeboat davit base and the structure is intact; the test method improves the accuracy of the test and ensures the safety of the test.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic side view of a test structure of the novel lifeboat static load test method of the invention.
Fig. 2 is a partial schematic front view structure diagram of a test structure of the novel lifeboat static load test method of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The novel lifeboat static load test method shown in figure 1 and figure 2 comprises the following specific test steps:
s1: preparation and inspection of test equipment: checking whether the arrangement and installation of the lifeboat davit 1 meet the requirements of approved design drawings, and checking a corresponding qualification certificate of the lifeboat davit 1; preparing a plurality of steel wire ropes, a plurality of shackles 2 and a hanging beam 3; strictly and practically measuring and recording the weights of the used steel wire rope, the shackle 2 and the hanging beam 3, calculating the weight required by the counterweight, preparing two counterweight frames 4 according with the weight, confirming the weighing, and carrying out on-site calibration; preparing a truck crane 5 and a tension sensor;
s2: connection of test devices: connecting the steel wire rope with the counterweight frame by adopting a shackle 2, forming a first lifting rope 6 on the counterweight frame, and respectively connecting the first lifting rope 6 formed by the two counterweight frames and the steel wire rope on the lifting beam 3 by adopting the shackle 2; two ends of the steel wire rope are respectively connected with two ends of the hanging beam to form a second hanging rope 7; then, two steel wire ropes are respectively connected with two shackles connected with the counterweight frame 4 to form a third lifting rope 8 and a fourth lifting rope 9;
s3: start of the static load test: firstly, connecting a tension sensor to a hook head of a truck crane 5, hooking a second lifting rope 7 by using the hook head of the truck crane with the tension sensor, slowly lifting, lifting a lifting beam 3, slowly lifting two counterweight frames 4 off the ground by lifting a first lifting rope 6 through the lifting beam 3, and ensuring the balance of the counterweight frames 4 on the lifting beam 3;
s4: load transfer: a worker pulls the third lifting rope 8 and the fourth lifting rope 9 to the lifesaving tappet 1, after safety is confirmed, the counterweight frame 4 is slowly lowered through a coupler head of the truck crane, and the position of the counterweight frame 4 is adjusted to prevent collision; gradually transferring the load to the lifeboat davit 1 through the third lifting rope 8 and the fourth lifting rope 9 until the lifeboat davit 1 completely bears the weight of the counterweight frame 4, and completing the load for 5 minutes;
s5: load unloading after the test: after the truck crane 5 finishes the test, the second lifting rope 7 is lifted again, and the load of the counterweight frame 4 is gradually transferred to the truck crane 5 until the truck crane 5 finishes bearing the load of the counterweight frame 4; then the third lifting rope 8 and the fourth lifting rope 9 are pulled away from the lifeboat davit 1 by the staff; finally, the truck crane 5 slowly moves downwards to put down the counterweight frame 4 and the hanging beam 3 to the ground;
s6: and (3) testing results: and after the counterweight frame is unloaded by 4 loads, visually checking whether the structure of the lifeboat keel block 1 has permanent deformation or damage, and if not, finishing the test.
The hoisting positions of the third hoisting rope 8 and the fourth hoisting rope 9 on the lifeboat davit 1 are not more than 1.5m away from the front end of the lifeboat davit 1.
And steel wire protection rubber is arranged at the contact part of the third lifting rope 8 and the fourth lifting rope 9 with the lifting position of the lifeboat davit.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. A lifeboat static load test method is characterized in that: the specific test steps are as follows:
s1: preparation and inspection of test equipment: checking whether the arrangement and installation of the lifeboat davit meet the requirements of approved design drawings, and checking a corresponding qualification certificate of the lifeboat davit; preparing a plurality of steel wire ropes, a plurality of shackles and a hanging beam; strictly and practically measuring and recording the weights of the used steel wire rope, the shackle and the hanging beam, calculating the weight required by the counterweight, preparing two counterweight frames according with the weight, confirming the weight by weighing, and carrying out calibration on site; preparing a truck crane and a tension sensor;
s2: connection of test devices: connecting the steel wire rope with the counterweight frame by adopting shackles, forming a first lifting rope on the counterweight frame, and respectively connecting the first lifting rope formed by the two counterweight frames and the steel wire rope on the lifting beam by adopting shackles; two ends of the first lifting rope are connected to two ends of the lifting beam respectively by adopting a steel wire rope to form a first lifting rope; then respectively connecting two shackles connected with the counterweight frame by adopting two steel wire ropes to form a third lifting rope and a fourth lifting rope;
s3: start of the static load test: firstly, connecting a tension sensor to a hook head of a truck crane, hooking a second lifting rope by using the hook head of the truck crane with the tension sensor, slowly lifting, lifting a lifting beam, slowly lifting two counterweight frames away from the ground by lifting the first lifting rope by the lifting beam, and ensuring the balance of the counterweight frames on the lifting beam;
s4: load transfer: the working personnel pulls the third lifting rope and the fourth lifting rope to the lifesaving tappet, after the safety is confirmed, the counterweight frame is slowly lowered through the automobile lifting hook head, and the position of the counterweight frame is adjusted to prevent collision; gradually transferring the load to the lifeboat davit through the third lifting rope and the fourth lifting rope until the lifeboat davit completely bears the weight of the counterweight frame, and finishing the load for 5 minutes;
s5: load unloading after the test: after the truck crane finishes the test, lifting the second lifting rope again, and gradually transferring the load of the counterweight frame to the truck crane until the truck crane finishes bearing the load of the counterweight frame; then, the third lifting rope and the fourth lifting rope are pulled to leave the lifeboat davit by workers; finally, the truck crane slowly moves downwards to put down the counterweight frame and the hanging beam to the ground;
s6: and (3) testing results: and after the balance weight frame is unloaded, visually checking whether the lifeboat keel frame structure has permanent deformation or damage, and if not, finishing the test.
2. The lifeboat static load test method of claim 1 wherein: the distance between the hoisting positions of the third hoisting rope and the fourth hoisting rope on the lifeboat frame and the front end of the lifeboat frame is not more than 1.5 m.
3. The lifeboat static load test method of claim 1 wherein: and steel wire protection rubber is arranged at the contact part of the third lifting rope and the fourth lifting rope with the lifting position of the lifeboat frame.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010465127.6A CN111591879B (en) | 2020-05-28 | 2020-05-28 | Novel lifeboat static load test method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010465127.6A CN111591879B (en) | 2020-05-28 | 2020-05-28 | Novel lifeboat static load test method |
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| CN111591879A CN111591879A (en) | 2020-08-28 |
| CN111591879B true CN111591879B (en) | 2022-03-25 |
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| CN202010465127.6A Active CN111591879B (en) | 2020-05-28 | 2020-05-28 | Novel lifeboat static load test method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114620198B (en) * | 2021-12-24 | 2023-07-18 | 武昌船舶重工集团有限公司 | Load test method and test tool |
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| CN204434104U (en) * | 2014-11-25 | 2015-07-01 | 中船黄埔文冲船舶有限公司 | A kind of loop wheel machine test under load frock |
| DE102015102841A1 (en) * | 2015-02-27 | 2016-09-01 | Terex MHPS IP Management GmbH | test load |
| CN106741605A (en) * | 2016-11-30 | 2017-05-31 | 中船黄埔文冲船舶有限公司 | A kind of pipeline for carrying out load test on hull pulls system |
| CN207361624U (en) * | 2017-08-07 | 2018-05-15 | 中交二公局第二工程有限公司 | A kind of multi-functional walking erection crane structure |
| CN108163694A (en) * | 2017-12-21 | 2018-06-15 | 沪东中华造船(集团)有限公司 | A kind of body section hanging method with hatch coaming |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106976797A (en) * | 2017-06-02 | 2017-07-25 | 广西路桥工程集团有限公司 | Three suspension centres turn round suspender |
| CN110285952B (en) * | 2019-06-28 | 2021-08-31 | 中船黄埔文冲船舶有限公司 | Lifeboat hanger test tool |
-
2020
- 2020-05-28 CN CN202010465127.6A patent/CN111591879B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204434104U (en) * | 2014-11-25 | 2015-07-01 | 中船黄埔文冲船舶有限公司 | A kind of loop wheel machine test under load frock |
| DE102015102841A1 (en) * | 2015-02-27 | 2016-09-01 | Terex MHPS IP Management GmbH | test load |
| CN106741605A (en) * | 2016-11-30 | 2017-05-31 | 中船黄埔文冲船舶有限公司 | A kind of pipeline for carrying out load test on hull pulls system |
| CN207361624U (en) * | 2017-08-07 | 2018-05-15 | 中交二公局第二工程有限公司 | A kind of multi-functional walking erection crane structure |
| CN108163694A (en) * | 2017-12-21 | 2018-06-15 | 沪东中华造船(集团)有限公司 | A kind of body section hanging method with hatch coaming |
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