CN114620198A - Load test method and test tool - Google Patents
Load test method and test tool Download PDFInfo
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- CN114620198A CN114620198A CN202111600757.0A CN202111600757A CN114620198A CN 114620198 A CN114620198 A CN 114620198A CN 202111600757 A CN202111600757 A CN 202111600757A CN 114620198 A CN114620198 A CN 114620198A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
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Abstract
The invention discloses a load test method and a load test tool, which solve the technical problems of low load test efficiency and high cost in the prior art. According to the load test method, a load test is performed on the equipment to be tested through the test tool, and the test tool comprises a main frame and a height adjusting assembly used for adjusting the overall height of the test tool. The load test method comprises a static load test method: placing a test tool on a test plane; adjusting the test tool to a position where the height adjusting assembly extends out of the bottom surface of the main frame and contacts with the test plane, and enabling the main frame to be separated from the test plane; connecting equipment to be tested and a test tool; and controlling the height adjusting assembly to retract to the test tool to separate from the test plane so that the equipment to be tested bears the weight of the test tool and observes the state of the equipment to be tested. The load test method and the test tool solve the technical problems of high load test cost, long period, no high-efficiency tool and the like in the prior art.
Description
Technical Field
The invention relates to the technical field of ship equipment load tests, in particular to a load test method and a test tool.
Background
At present, ship equipment load tests are carried out by designing and manufacturing special load-bearing devices according to different sizes, different load-bearing tonnages, different environments and the like of all equipment, secondary modification optimization can occur in the test process, time and labor are wasted, and the utilization rate is low. A guide joint of the folding and unfolding A frame of the manned submersible vehicle, the ROV, the ARV and the like is 3-4 m away from a deck, so that the static load test and the dynamic load test are carried out by 20-55 tons of load, and the common test tool cannot meet the requirements.
In conclusion, the load test in the prior art has the technical problems of high cost, long period, low efficiency and the like.
Disclosure of Invention
In order to solve the technical problems, the invention provides a test tool, which fully considers the support effect, the manufacturing process, the test convenience and the operation feasibility, and solves the problems of high load test cost, long period, no high-efficiency tool and the like.
The technical purpose of the invention is realized by adopting the scheme that the load test method is used for testing equipment to be tested of a ship, the load test method is used for carrying out load test on the equipment to be tested through a test tool, and the test tool comprises a main frame and a height adjusting assembly for adjusting the overall height of the test tool;
the load test method comprises the following steps:
static load test method:
placing the test tool on a test plane; adjusting the test tool until the height adjusting assembly extends out of the bottom surface of the main frame and is in contact with the test plane, so that the main frame is separated from the test plane; connecting the equipment to be tested and the test tool;
and controlling the height adjusting assembly to retract to enable the test tool to be integrally separated from the test plane, so that the equipment to be tested bears the weight of the test tool, and the state of the equipment to be tested is observed.
Further, the static load test method, the connecting device to be tested and the test tool, specifically comprises,
and connecting the equipment to be tested and the test tool through a connecting piece, and adjusting the connecting piece to enable the connecting piece to be tensioned.
Further, the bottom of the main frame is also provided with an inflatable protection pad;
the static load test method specifically comprises the step of inflating the protection pad after the main frame is separated from the test plane so as to protect the track of the equipment to be tested.
Further, the weight test method further comprises:
the dynamic load test method comprises the following steps:
placing the test tool on the test plane; connecting the equipment to be tested and the test tool;
and controlling the equipment to be tested to act and continuously setting time so that the test tool is lifted away from the test plane by the equipment to be tested and moves for a set distance.
Further, in the dynamic load test method, the step of placing the test tool on the test plane specifically includes:
and adjusting the test tool to enable the height adjusting assembly to be retracted into the main frame, so that the main frame is in contact with the test plane.
Further, the main frame has a cavity for carrying a weight; the weight-bearing test method further comprises: and adjusting the weight of the test tool to a set load.
Based on the same inventive concept, the invention also provides a test tool for implementing the load test method, which comprises the following steps:
the main frame is provided with a hook part used for being connected with the equipment to be tested;
and the height adjusting assembly is arranged on the main frame and is used for adjusting the overall height of the test tool.
Further, the height adjusting assembly comprises at least three hydraulic cylinders which are arranged at intervals; the test tool further comprises a counterweight, and the main frame is provided with a cavity for accommodating the counterweight.
Furthermore, the test tool further comprises a connecting piece and a lifting rod; the connecting piece is connected with the main frame and protrudes out of the top surface of the main frame, and the lifting rod is arranged on the connecting piece and protrudes out of the top surface of the connecting piece; the hook portion is at least two through holes arranged on the lifting rod at intervals.
Further, the test tool further comprises a hydraulic pump station, a hydraulic oil supply cabinet and a storage tank, wherein the hydraulic pump station and the hydraulic oil supply cabinet are arranged on the main frame;
the test tool further comprises a flushing assembly and an air supply assembly, and the flushing assembly and the air supply assembly are arranged on the main frame; the flushing assembly comprises a fresh water supply tank, a seawater supply tank and a hose; the air supply assembly includes a compressed air supply for drying, an oxygen supply for supplying oxygen, and an air supply hose.
According to the technical scheme, the load test method is used for testing equipment to be tested of a ship, the load test method carries out load test on the equipment to be tested through the test tool, and the test tool comprises a main frame and a height adjusting assembly used for adjusting the overall height of the test tool; the height adjusting assembly can be switched between a state that the height adjusting assembly moves forwards to protrude out of the bottom surface of the main frame and a state that the height adjusting assembly retracts backwards to be at least flush with the bottom surface of the main frame, so that the main frame of the test tool can be directly placed on the test plane, or the height adjusting assembly is in contact with the test plane so that the main frame is not in contact with the test plane.
Because the static load test mainly tests the equipment strength under abnormal working conditions or severe working conditions, the set test load of the static load test is generally larger than the working load of the equipment to be tested, so that the equipment to be tested cannot directly lift the test tool for setting the test load, and the static load test cannot be carried out. According to the load test method provided by the invention, the height adjusting assembly is adjusted in advance to extend out to be in contact with the test plane, and the main frame is separated from the test plane, so that the main frame is in an emptying state, and the weight of the test tool is transferred to the test plane through the height adjusting assembly. The load can be completely loaded to the equipment to be tested only by controlling the height adjusting assembly to be separated from the test plane after the equipment to be tested and the test tool are connected, so that the equipment to be tested does not need to be lifted in a lifting process when a static load test is carried out, namely, an executing mechanism of the equipment to be tested does not need to carry load action, the executing mechanism of the equipment to be tested is controlled to act to a working state in advance under the condition of no load, the loading is withdrawn through the height adjusting assembly, the test load is preset, the static load test is guaranteed to be stably carried out, and the technical problem that the test tool cannot be lifted by the equipment to be tested to carry out the static load test is solved.
The test tool provided by the invention comprises the main frame and the height adjusting assembly, and meets the static load test requirements and the dynamic load test requirements of various devices. The main frame is provided with a hook part used for being connected with the equipment to be tested; the height adjustment subassembly set up in the main frame, the height adjustment subassembly is used for adjusting the whole height of experimental frock, specifically: the height adjusting assembly can move forward to protrude out of the bottom surface of the main frame and retract reversely to be at least flush with the bottom surface of the main frame, so that the main frame of the test tool can be directly placed on a test plane, or the height adjusting assembly is in contact with the test plane, so that the main frame is not in contact with the test plane. Namely, the test tool can be placed on the test plane through the bottom surface of the main frame, or can be placed on the test plane through the extended height adjusting assembly.
The static load test is used for testing the strength and the like of equipment to be tested under severe working conditions, the static load of the static load test is often larger than the dynamic load of the equipment to be tested and can exceed the design load range of the equipment to be tested, the test tool can not be directly hoisted generally, in order to change the height of the test tool by utilizing the height adjusting assembly when the load test is carried out, the distance between a hook part and the equipment to be tested is shortened, the vertical height of a lifting rope is saved, after a hook and the hook part of the equipment are tensioned, the contraction assembly is withdrawn, the equipment is emptied, the static load weight can be borne by the equipment at the moment, the heavy-weight static load test of the equipment is completed, the technical problems that the hoisting vertical height is insufficient and the test tool can not be hoisted are solved, and the load test cost is high, the period is long, the efficiency is low and the like are solved.
Drawings
Fig. 1 is a block diagram illustrating a static load test in the load test method according to embodiment 1 of the present invention.
Fig. 2 is a block diagram of a dynamic load test in the load test method provided in embodiment 1 of the present invention.
Fig. 3 is a front view of a test fixture provided in embodiment 2 of the present invention;
FIG. 4 is a cross-sectional view B-B of the test fixture of FIG. 3;
FIG. 5 is a top view of the test fixture of FIG. 3;
FIG. 6 is a cross-sectional view A-A of the test fixture of FIG. 5;
FIG. 7 is a schematic view of the linkage and boom of FIG. 6 from a certain perspective;
fig. 8 is a schematic view of the connecting member and the lifting bar of fig. 6 from another perspective.
Reference numerals: 1-main frame, 2-hydraulic cylinder, 21-cylinder part, 22-rod part; 3-connecting piece, 4-lifting rod; 5-a hydraulic pump station; 6-hydraulic oil supply cabinet; 7-a storage box; 8-flush assembly, 81-fresh water supply tank, 82-seawater supply tank; 9-air supply assembly, 91-compressed air supply, 92-oxygen supply; 10-protective pad.
Detailed Description
In order to make the present application more clearly understood by those skilled in the art to which the present application pertains, the following detailed description of the present application is made with reference to the accompanying drawings by way of specific embodiments.
In order to solve the technical problems that the static load test of ship equipment wastes time and labor, the utilization rate of a test tool is low, and the applicability is not high, the invention provides a load test method and the test tool, which fully consider the manufacturing process, the test convenience and the operation feasibility, and solve the technical problems of high cost, long period and low efficiency of the load test. Two specific examples are described below.
Example 1
As shown in fig. 1, a load test method provided in an embodiment of the present invention is used for testing a device to be tested of a ship, and the load test method performs a load test on the device to be tested through a test fixture, where the test fixture includes a main frame and a height adjustment assembly for adjusting an overall height of the test fixture; the height adjusting assembly can be switched between a state that the height adjusting assembly moves forwards to protrude out of the bottom surface of the main frame and a state that the height adjusting assembly retracts backwards to be at least flush with the bottom surface of the main frame, so that the main frame of the test tool can be directly placed on a test plane, or the height adjusting assembly is in contact with the test plane so that the main frame is not in contact with the test plane.
The load test method comprises a static load test method, as shown in figure 1:
placing the test tool on a test plane; adjusting the test tool until the height adjusting assembly extends out of the bottom surface of the main frame and contacts with the test plane, so that the main frame is separated from the test plane; connecting the equipment to be tested and the test tool;
and controlling the height adjusting assembly to retract to enable the test tool to be integrally separated from the test plane, so that the equipment to be tested bears the weight of the test tool, and the state of the equipment to be tested is observed.
Because the static load test mainly tests the equipment strength under abnormal working conditions or severe working conditions, the set test load of the static load test is generally larger than the working load of the equipment to be tested, so that the equipment to be tested cannot directly lift the test tool for setting the test load, and the static load test cannot be carried out. According to the load test method provided by the invention, the height adjusting assembly is adjusted in advance to extend out to be in contact with the test plane, and the main frame is separated from the test plane, so that the main frame is in an empty state, and the weight of the test tool is transferred to the test plane through the height adjusting assembly. The load can be completely loaded to the equipment to be tested only by controlling the height adjusting assembly to be separated from the test plane after the equipment to be tested and the test tool are connected, so that the equipment to be tested does not need to be lifted in a lifting process when a static load test is carried out, namely, an executing mechanism of the equipment to be tested does not need to carry load action, the executing mechanism of the equipment to be tested is controlled to act to a working state in advance under the condition of no load, the loading is withdrawn through the height adjusting assembly, the test load is preset, the static load test is guaranteed to be stably carried out, and the technical problem that the test tool cannot be lifted by the equipment to be tested to carry out the static load test is solved.
In order to ensure the safety in the static load test, preferably, the height adjusting assembly is controlled to be retracted to the test tool to be separated from the test plane, specifically, the height adjusting assembly is reversely retracted to be flush with the bottom surface of the main frame or even in a shorter state, so that when the test tool is prevented from abnormally dropping, the extending end of the height adjusting assembly directly collides with the test plane, and the effect of protecting the test tool is achieved.
In order to avoid the occurrence of unstable test and uncontrollable conditions caused by sudden change of tensile force, in this embodiment, in the static load test method, the device to be tested and the test fixture are connected, specifically, the method includes connecting the device to be tested and the test fixture through a connecting member, and adjusting the connecting member to make the connecting member establish tension. Preferably, in the step of establishing the tension, after the height adjusting assembly is adjusted to extend out of the bottom surface of the main frame, the height adjusting assembly is retracted, so that the main frame is stably vacated without changing the position, and the equipment to be tested stably bears the weight of the test tool.
The load test method provided by the embodiment has a wide application range, can be used for testing a conventional A frame and a crane, and can also be used for testing an A frame with a manned submersible vehicle, an ROV and an ARV guide joint, aiming at some special equipment with a self-carrying moving track, in order to protect the composition of the equipment to be tested, in the embodiment, the bottom of the main frame is also provided with an inflatable protection pad. The static load test method specifically comprises the step of inflating the protection pad after the main frame is separated from the test plane so as to protect the track of the equipment to be tested. For example, manned submersible, ROV, ARV migration track set up under A frame, in order to protect the track, during the experiment, open and aerify in the protection pad to avoid this device weight to press on the track, avoid the track damage that this device collided the track and lead to simultaneously.
In order to meet various test requirements of the load test, in this embodiment, the load test method further includes a dynamic load test method: placing a test tool on a test plane; and connecting the equipment to be tested and the test tool. And controlling the equipment to be tested to act and continue for a set time, so that the test tool is lifted away from the test plane by the equipment to be tested and moves for a set distance to perform inboard and outboard dynamic load tests, as shown in fig. 2.
In the dynamic load test, the state of the test tool is not specifically limited, that is, the state of the height adjusting assembly is not limited, and the test tool can protrude out of the bottom surface of the main frame to be in contact with the test plane, and can also be retracted into the main frame to be in direct contact with the test plane.
In order to simplify the process steps, in the dynamic load test method in this embodiment, the step of placing the test fixture on the test plane specifically includes adjusting the test fixture to a position where the height adjusting assembly is retracted into the main frame, so that the main frame contacts the test plane.
Similarly, in order to improve the testing efficiency, in this embodiment, before the device under test starts to operate and is ready to be lifted away from the testing tool, it is preferable to set up a connecting member connecting the device under test and the testing tool.
In order to perform multiple tests with different test loads and match the test requirements of different devices to be tested through the same test tool, in the embodiment, the main frame is provided with a cavity for bearing the counterweight. The weight-bearing test method further comprises: and adjusting the weight of the test tool to a set load.
According to the load test method provided by the embodiment, when a static load test is carried out, if equipment cannot lift the static load, the height adjusting assembly is controlled to move to protrude 200-500 mm from the bottom surface of the main frame, then a counterweight is loaded into a cavity of the test tool, the total weight of the test tool is adjusted to be a required set load, the equipment to be tested and the test tool are connected through the connecting piece, and the connecting piece is tensioned. And then controlling the height adjusting assembly to retract to be at least flush with the bottom surface of the main frame in the opposite direction, completely bearing the set load of the test at the moment when the height adjusting assembly leaves the test plane, standing for the set time and observing, thereby completing the heavy-weight static load test of the equipment. When the dynamic load test is carried out, the whole test tool is lifted away from the test plane by the self action and force application of the equipment to be tested and is dynamically moved.
Example 2
The test tool for implementing the load test method in embodiment 1 includes a main frame 1 and a height adjusting assembly, and meets the static load test requirements and the dynamic load test requirements of various devices, as shown in fig. 3 to 8. The main frame 1 is provided with a hook part for connecting with equipment to be tested; height adjusting assembly sets up in main frame 1, and height adjusting assembly is used for adjusting the whole height of experimental frock, specifically: the height adjusting assembly can move forward to protrude out of the bottom surface of the main frame 1 and retract reversely to be at least flush with the bottom surface of the main frame 1, so that the main frame 1 of the test tool can be directly placed on a test plane, or the height adjusting assembly is in contact with the test plane so that the main frame 1 is not in contact with the test plane. Namely, the test fixture can be placed on a test plane through the bottom surface of the main frame 1, or can be placed on the test plane through the extended height adjusting assembly.
The static load test is used for testing the strength and the like of equipment to be tested under severe working conditions, the static load of the static load test is often larger than the dynamic load of the equipment to be tested, and can exceed the design load range of the equipment to be tested, the test tool can not be directly hoisted generally, in order to change the height by utilizing the height adjusting assembly when the load test is carried out, the distance between the hook part and the equipment to be tested is shortened, the vertical height of a hoisting rope is saved, after the hook and the hook part of the equipment are tensioned, the contraction assembly is withdrawn, the equipment is emptied, the static load weight can be born by the equipment at the moment, and therefore the heavy-weight static load test of the equipment is completed, the technical problems that the hoisting vertical height is insufficient and the test tool can not be hoisted are solved, and the load test cost is high, the period is long, the efficiency is low and the like are solved.
In the static load test process, when the height adjusting assembly extends out, the weight of the whole test tool is supported by the height adjusting assembly, and in order to ensure the stable placement, the test tool provided by the invention comprises at least three hydraulic cylinders 2 arranged at intervals. For the convenience of installation, in the present embodiment, the cylinder portion 21 of the hydraulic cylinder 2 is fixed to the side of the main frame 1, and the rod portion 22 is used for movably extending.
In this embodiment, main frame 1 is the rectangle, and height adjustment subassembly includes 6 pneumatic cylinders 2, and 6 pneumatic cylinders 2 divide into two sets ofly, and every three pneumatic cylinder 2 interval distribution is in the long avris of main frame 1, preferably, wherein four pneumatic cylinders 2 connect in the apex angle department of main frame 1.
The arrangement of the height adjusting assembly and the main frame 1 is not particularly limited, the height adjusting assembly can be shorter than the bottom surface of the main frame 1 in a contraction state, and can also be flush with the bottom surface of the main frame 1.
In this embodiment, can effectively promote the height of couple portion through height adjusting part when carrying out the static test, realize shortening the effect of hoist and mount vertical height. However, during dynamic load test, the height adjusting assembly is always in a stretching-back state, and the problem of high vertical height of hoisting is also existed at the time, for example, a manned submersible vehicle, an ROV, an ARV and the like receive and release an A frame, because the guide joint is 3m-4m away from the deck, the load is required to be loaded by 20 tons-55 tons for static load and dynamic load test, and the common test tool cannot meet the requirement. In order to take account of the hoisting of the dynamic load test, in this embodiment, the hook portion protrudes from the top surface of the main frame 1.
In order to meet the test requirements of various devices, the test tool provided by the invention is a structure with variable weight, and particularly, the test tool further comprises a counterweight, the main frame 1 is provided with a cavity for accommodating the counterweight so as to change the load weight of the test tool, and the counterweight is carried out according to the load to be measured, so that the applicability of the test tool is improved.
In this embodiment, the main frame 1 is a hollow structure, and each surface of the main frame 1 is formed by the h-shaped steel arranged at intervals and connected with each other, and can bear the weight of up to 60 tons.
The test tool further comprises a lifting component arranged on the main frame 1, and the hook part is arranged on the lifting component. In order to ensure the stability after hanging and effectively shorten the length of the lifting rope, in the present embodiment, it is preferable that the hook part is disposed at the top and in the middle of the main frame 1.
In order to ensure the stable connection between the hoisting assembly and the main frame 1 and ensure the hanging strength, in the embodiment, the hoisting assembly comprises a connecting piece 3 and a hoisting rod 4; the connecting piece 3 is connected with the main frame 1, the connecting piece 3 protrudes out of the top surface of the main frame 1, and the lifting rod 4 is arranged on the connecting piece 3 and protrudes out of the top surface of the connecting piece 3; the hooking part is at least two through holes 41 arranged on the lifting rod 4 at intervals.
In order to take daily maintenance into consideration, in this embodiment, the test fixture further includes a hydraulic pump station 5, a hydraulic oil supply cabinet 6 and a storage tank 7 for storage, which are disposed on the main frame 1, and oil liquid for refueling and oil supplementing operations is provided for the manned submersible. The device is hung to the tail of a ship, and when the manned submersible is folded or lowered, the submersible is filled with oil and supplemented with oil through the hose.
When being applied to the equipment that contains the migration track with this experimental frock experimental, for example manned submersible, ROV, ARV etc. its migration track is under the A frame that awaits measuring, in order to protect the track, in this embodiment, the bottom surface of main frame 1 is provided with the protection pad to experimental frock weight is pressed on the track when avoiding static test, avoids experimental frock to collide the track simultaneously, thereby damages the track.
The test tool further comprises a flushing component 8 and an air supply component 9, wherein the flushing component 8 and the air supply component 9 are arranged on the main frame 1; the flushing assembly 8 comprises a fresh water supply tank 81, a seawater supply tank 82 and a hose; the air supply assembly 9 includes a compressed air supply 91 for drying, an oxygen supply 92 for supplying oxygen, and an air supply hose. Specifically, the oxygen cylinder of the submersible is filled with oxygen through a hose for use by a diver in deep sea diving or for emergency oxygen supply. When the manned submersible, the ROV, the ARV, the sea-entering equipment and the like are collected and shipped, the flushing assembly 8 is opened, the seawater flushing equipment is firstly used for flushing away marine organisms, sludge, impurities and the like, then the fresh water is used for flushing the equipment to flush the seawater on the surface of the equipment so as to prevent the residual seawater from corroding the equipment, and if necessary, the compressed air supply part 91 is opened, the equipment is dried by compressed air, and the integral performance of the equipment is ensured.
During maintenance, a person can get on the device, or get on the top of the main frame 1 through a boarding ladder housed in the storage box 7 on the side of the main frame 1, and wash and blow the equipment at various positions through the compressed air supply member 91 and the washing component 8, thereby achieving all-around maintenance.
The working principle and the using method of the test tool provided by the embodiment are as follows:
1. the test bed is used for load tests of equipment such as a conventional A frame and a crane;
this device self weight satisfies the equipment requirement of bearing a burden, can directly hoist this device with equipment, and available ballast iron fine setting weight, equipment lifting hook are direct or hang on jib 4 through the shackle, save the vertical distance, save wire rope, prevent to rock, accomplish the test of bearing a burden. The equipment that needs the increase weight is torn down connecting piece 3 and plays jib 4 whole, and pressure loading iron, crane pouring weight, steel sheet etc. are adjusted to the required weight of equipment in main frame 1, and installation connecting piece 3 and play jib 4, the lifting hook is direct or hang on getting up jib 4 through the shackle, saves the vertical distance, saves wire rope, prevents to rock, accomplishes the heavy burden test.
When the equipment is used for static load tests, if the equipment cannot lift the static load, the hydraulic pump station 5 is firstly opened, the hydraulic cylinder 2 is controlled to extend by 200 mm-500 mm, then the connecting piece 3 and the lifting rod 4 are disassembled, the heavy block or the ballast iron is arranged in the main frame 1, the equipment hook is hung on the lifting rod 4 to be tensioned, then the hydraulic cylinder 2 is controlled to be contracted to the shortest through the hydraulic pump station 5, so that the static load can be borne by the equipment, and the heavy-weight static load tests of the equipment are completed.
2. The test bed is used for a load test of a frame A of a manned submersible, an ROV and an ARV guide joint;
static load test: the hydraulic pump station 5 is opened firstly, the hydraulic cylinder 2 is controlled to extend by 400mm, the device is lifted to a proper position below the A frame, then the connecting piece 3 and the lifting rod 4 are disassembled, a heavy block or a ballast iron is arranged in the main frame 1 to 35-56 tons, 2 ear plates of the manned submersible, the ROV and the ARV guide joint are connected to 2 holes of the lifting rod 4 through butt joint shackles, the vertical height of a steel wire rope is saved, then the hydraulic cylinder 2 is controlled to be contracted to the shortest through the hydraulic pump station 5, so that the static load weight can be borne by the 2 ear plates of the guide joint and is kept for 15 minutes, and the large-weight static load test of the equipment is completed. Because of manned submersible, ROV, ARV migration track under A frame, in order to protect the track, during the experiment, open compressed air supply piece 91 and be full of gas to the protection pad to avoid this device weight to press on the track, avoid this device to collide the track simultaneously, thereby damage the track.
Dynamic load test: the hydraulic cylinder 2 is retracted, the weight is adjusted to the dynamic load weight, 2 ear plates of the manned submersible vehicle, the ROV and the ARV guide joint are connected to 2 holes of the lifting rod 4 through butt shackles, the vertical height of a steel wire rope is saved, and the device is lifted through the A frame to carry out inboard and outboard dynamic load tests.
Through the embodiment, the invention has the following beneficial effects or advantages:
1) the load test method and the test tool provided by the invention are used for testing static load, the height adjusting assembly is adjusted in advance to extend out to be in contact with the test plane, and the main frame is separated from the test plane, so that the main frame is in an emptying state, and the weight of the test tool is transferred to the test plane through the height adjusting assembly. The load can be completely loaded to the equipment to be tested only by controlling the height adjusting assembly to be separated from the test plane after the equipment to be tested and the test tool are connected, so that the equipment to be tested does not need to be lifted in a lifting process when a static load test is carried out, namely, an executing mechanism of the equipment to be tested does not need to carry load action, the executing mechanism of the equipment to be tested is controlled to act to a working state in advance under the condition of no load, the loading is withdrawn through the height adjusting assembly, the test load is preset, the static load test is guaranteed to be stably carried out, and the technical problem that the test tool cannot be lifted by the equipment to be tested to carry out the static load test is solved.
2) According to the test tool provided by the invention, the overall height can be changed through the height adjusting component, the distance between the hook part and the equipment to be tested is shortened, the vertical height of the lifting rope is saved, the contraction component is retracted after the hook and the hook part of the equipment are tightened, the equipment is emptied, and the dead load can be borne by the equipment, so that a heavy-weight dead load test of the equipment is completed, the technical problems that the vertical height of the lifting is insufficient and the test tool cannot be lifted are solved, and the problems of high cost, long period, low efficiency and the like of the load test are solved.
3) The test tool provided by the invention fully considers the automatic extension, the supporting effect, the manufacturing process, the test convenience and the operation feasibility, and solves the technical problems of insufficient vertical height of hoisting, high load test cost, long period, no high-efficiency tool and the like. Meanwhile, the device can be used for daily maintenance of ships, the device is lifted to a maintenance position, the flushing assembly is opened, and the deck, the railing, the equipment base and the like are flushed with fresh water or seawater; opening a hydraulic pump station and performing a temporary hydraulic test; opening a compressed air supply part, and performing a close test after the pipeline system is modified; and opening the hydraulic oil supply cabinet to supplement the hydraulic oil leaked by the hydraulic system. The oxygen supply part is used for emergency treatment of personnel and can be used for emergency oxygen inhalation of divers, people falling into the sea carelessly, sick people and the like.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (10)
1. A load test method is used for testing equipment to be tested of a ship and is characterized in that the load test method is used for carrying out load test on the equipment to be tested through a test tool, and the test tool comprises a main frame and a height adjusting assembly used for adjusting the overall height of the test tool;
the load test method comprises the following steps:
static load test method:
placing the test tool on a test plane; adjusting the test tool until the height adjusting assembly extends out of the bottom surface of the main frame and contacts with the test plane, so that the main frame is separated from the test plane; connecting the equipment to be tested and the test tool;
and controlling the height adjusting assembly to retract to enable the test tool to be integrally separated from the test plane, so that the equipment to be tested bears the weight of the test tool, and the state of the equipment to be tested is observed.
2. The weight-bearing test method according to claim 1, wherein the static test method, the connecting the device under test and the test fixture, comprises,
and connecting the equipment to be tested and the test tool through a connecting piece, and adjusting the connecting piece so as to enable the connecting piece to be stretched.
3. The method for testing loads according to claim 1, wherein an inflatable protective pad is further provided on the bottom of the main frame;
the static load test method specifically comprises the step of inflating the protection pad after the main frame is separated from the test plane so as to protect the track of the equipment to be tested.
4. The weight-testing method of claim 1, further comprising:
the dynamic load test method comprises the following steps:
placing the test tool on the test plane; connecting the equipment to be tested and the test tool;
and controlling the equipment to be tested to act and continuously setting time so that the test tool is lifted away from the test plane by the equipment to be tested and moves for a set distance.
5. The load-bearing test method according to claim 4, wherein the placing of the test fixture on the test plane in the dynamic load-bearing test method specifically comprises:
and adjusting the test tool to enable the height adjusting assembly to be retracted into the main frame, so that the main frame is in contact with the test plane.
6. The method of any one of claims 1 to 5, wherein the main frame has a cavity for carrying a weight; the weight-bearing test method further comprises: and adjusting the weight of the test tool to a set load.
7. A test tool for carrying out the weight-bearing test method of any one of claims 1-6, comprising:
the main frame is provided with a hook part used for being connected with the equipment to be tested;
and the height adjusting assembly is arranged on the main frame and used for adjusting the overall height of the test tool.
8. The test fixture of claim 7, wherein the height adjustment assembly includes at least three hydraulic cylinders spaced apart; the test tool further comprises a counterweight, and the main frame is provided with a cavity for accommodating the counterweight.
9. The test tool of claim 7, further comprising a connector and a lifting rod; the connecting piece is connected with the main frame and protrudes out of the top surface of the main frame, and the lifting rod is arranged on the connecting piece and protrudes out of the top surface of the connecting piece; the hook portion is at least two through holes arranged on the lifting rod at intervals.
10. The test tool according to any one of claims 7 to 9, further comprising a hydraulic pump station, a hydraulic oil supply cabinet and a storage tank for storage, which are arranged on the main frame;
the test tool further comprises a flushing assembly and an air supply assembly, wherein the flushing assembly and the air supply assembly are arranged on the main frame; the flushing assembly comprises a fresh water supply tank, a seawater supply tank and a hose; the air supply assembly includes a compressed air supply for drying, an oxygen supply for supplying oxygen, and an air supply hose.
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| CN114620198B (en) | 2023-07-18 |
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