CN114620198B - Load test method and test tool - Google Patents
Load test method and test tool Download PDFInfo
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- CN114620198B CN114620198B CN202111600757.0A CN202111600757A CN114620198B CN 114620198 B CN114620198 B CN 114620198B CN 202111600757 A CN202111600757 A CN 202111600757A CN 114620198 B CN114620198 B CN 114620198B
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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
- B63B71/00—Designing vessels; Predicting their performance
Abstract
The invention discloses a load test method and a 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, the load test is carried out on the equipment to be tested through the 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 a static load test method: placing a test tool on a test plane; the test fixture is adjusted to the point that the height adjusting component extends out of the bottom surface of the main frame and is in contact with the test plane, and the main frame is separated from the test plane; connecting equipment to be tested and a test tool; and controlling the height adjusting assembly to retract until the test fixture is separated from the test plane, so that the equipment to be tested bears the weight of the test fixture, and observing 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 load tests of ship equipment, in particular to a load test method and a test tool.
Background
At present, the load test of ship equipment is carried out according to different sizes, different load tonnages, different environments and the like of each equipment, and the special load device is designed and manufactured, so that secondary modification and optimization can occur in the test process, the time and the labor are wasted, and the utilization rate is low. The manned submersible, ROV, ARV and other retractable A frames have the advantages that the guide joint is 3m-4m away from the deck, and the static load and dynamic load tests are carried out by bearing 20 tons-55 tons, so that the common test tools cannot be satisfied.
In summary, 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 the test tool, which fully considers the supporting 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 aim of the invention is achieved by adopting a load test method, which is used for testing equipment to be tested of a ship, wherein the load test method is used for carrying out a 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 in a test plane; the test fixture is adjusted to the point that the height adjusting component 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 until the whole test tool is separated from the test plane, so that the equipment to be tested bears the weight of the test tool, and observing the state of the equipment to be tested.
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 with the test tool through a connecting piece, and adjusting the connecting piece to enable the connecting piece to establish tension.
Further, the bottom of the main frame is also provided with an inflatable protection pad;
the static load test method specifically further 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 load test method further comprises:
the dynamic load test method comprises the following steps:
placing the test tool in the test plane; connecting the equipment to be tested and the test tool;
and controlling the equipment to be tested to act for a set time, so that the test fixture 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 test tool is placed on the test plane, and specifically includes:
and adjusting the test fixture to the height adjusting assembly to retract in the main frame so as to enable the main frame to be in contact with the test plane.
Further, the main frame has a cavity for carrying a weight; the load test method further comprises: and adjusting the weight of the test tool to 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:
a main frame having a hook portion for connecting with the device to be tested;
the height adjusting assembly is arranged on the main frame and 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 fixture further includes a weight, and the main frame has a cavity for receiving the weight.
Further, the test fixture further comprises a connecting piece and a lifting rod; the connecting piece is connected with the main frame, the connecting piece 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 hooking parts are at least two through holes which are arranged on the lifting rod at intervals.
Further, the test fixture further comprises a hydraulic pump station, a hydraulic oil supply cabinet and a storage box, wherein the hydraulic pump station, the hydraulic oil supply cabinet and the storage box are arranged on the main frame;
the test fixture further comprises a flushing assembly and an air supply assembly, wherein the flushing assembly and the air supply assembly are both arranged on the main frame; the flushing assembly comprises a fresh water supply tank, a sea water 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 the equipment to be tested of the ship, the load test method is used for carrying out a 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 adjustment assembly is switchable between a forward movement to project from the bottom surface of the main frame and a reverse retraction to be at least flush with the bottom surface of the main frame so that the main frame of the test fixture may be placed directly on the test plane or the height adjustment assembly may be in contact with the test plane so that there is no contact between the main frame and 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 fixture of the set test load, and the static load test cannot be performed. According to the load test method provided by the invention, the height adjusting assembly is adjusted in advance to extend 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 a vacated state in the 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 onto the equipment to be tested by only 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 the process of static load test, namely, an actuating mechanism of the equipment to be tested does not need to act with load, the actuating mechanism of the equipment to be tested is controlled to act to a working state in advance under the condition of no load, the preset test load is loaded by the height adjusting assembly in a retracting mode, stable performance of the static load test is guaranteed, and the technical problem that the equipment to be tested cannot lift the test tool to perform the static load test is solved.
The test fixture provided by the invention comprises the main frame and the height adjusting component, and meets the static load test requirement and the dynamic load test requirement of various equipment. The main frame is provided with a hook part used for being connected with the equipment to be tested; the height adjusting assembly set up in the main frame, the height adjusting assembly is used for adjusting the whole height of experimental frock, specifically: the height adjustment assembly is movable in a forward direction to project from the bottom surface of the main frame and retractable in a reverse direction to at least flush with the bottom surface of the main frame so that the main frame of the test fixture can be placed directly on the test plane or the height adjustment assembly is in contact with the test plane so that there is no contact between the main frame and the test plane. That is, the test fixture may be placed on the test plane through the bottom surface of the main frame, or may be placed on the test plane through the extended height adjustment 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, the design load range of the equipment to be tested can be exceeded, the test tool cannot be directly hung up, in order to change the height of the test tool by utilizing the height adjusting component during the load test, the distance between the hook part and the equipment to be tested is shortened, the vertical height of a hanging rope is saved, after the hook part and the hook part of the equipment are tensioned, the shrinkage component is retracted, the equipment is emptied, the static load weight can be born by the equipment at the moment, thereby the equipment high-weight static load test is completed, the technical problems that the hanging vertical height is insufficient, the test tool cannot be hung up are solved, and the problems of high load test cost, long period, low efficiency and the like are solved.
Drawings
Fig. 1 is a flow chart of a static load test in the load test method according to embodiment 1 of the present invention.
Fig. 2 is a flow chart of a dynamic load test in the load test method according to embodiment 1 of the present invention.
Fig. 3 is a front view of the test tool provided in embodiment 2 of the present invention;
FIG. 4 is a B-B cross-sectional view of the test tooling 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 tooling of FIG. 5;
FIG. 7 is a schematic view of the attachment and boom of FIG. 6 from a certain perspective;
fig. 8 is a schematic view of the attachment and boom of fig. 6 from another perspective.
Reference numerals: 1-a main frame, 2-a hydraulic cylinder, 21-a cylinder part and 22-a rod part; 3-connecting pieces, 4-lifting the boom; 5-a hydraulic pump station; 6-a hydraulic oil supply cabinet; 7-storing box; 8-flushing assembly, 81-fresh water supply tank, 82-seawater supply tank; 9-a gas supply assembly, 91-a compressed air supply, 92-an oxygen supply; 10-protection pad.
Detailed Description
In order to make the technical solution more clearly understood by those skilled in the art, the following detailed description is made with reference to the accompanying drawings.
In order to solve the technical problems of time and labor waste, low utilization rate and low applicability of a test fixture in a static load test of ship equipment, the invention provides a load test method and the test fixture, which fully consider the manufacturing process, test convenience and operation feasibility and solve the technical problems of high load test cost, long period and low efficiency. The following is a description of two specific embodiments.
Example 1
As shown in fig. 1, the load test method provided by the embodiment of the invention is used for testing equipment to be tested of a ship, the load test method is used for carrying out a 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 height adjustment assembly is switchable between a forward movement to project from the bottom surface of the main frame and a reverse retraction to be at least flush with the bottom surface of the main frame so that the main frame of the test fixture may be placed directly on the test plane or the height adjustment assembly may be in contact with the test plane so that there is no contact between the main frame and the test plane.
The load test method includes a static load test method, as shown in fig. 1:
placing the test tool in a test plane; the test fixture is adjusted to the point that the height adjusting component 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 until the whole test tool is separated from the test plane, so that the equipment to be tested bears the weight of the test tool, and observing the state of the equipment to be tested.
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 fixture of the set test load, and the static load test cannot be performed. According to the load test method provided by the invention, the height adjusting assembly is adjusted in advance to extend 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 a vacated state in the 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 onto the equipment to be tested by only 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 the process of static load test, namely, an actuating mechanism of the equipment to be tested does not need to act with load, the actuating mechanism of the equipment to be tested is controlled to act to a working state in advance under the condition of no load, the preset test load is loaded by the height adjusting assembly in a retracting mode, stable performance of the static load test is guaranteed, and the technical problem that the equipment to be tested cannot lift the test tool to perform the static load test is solved.
In order to ensure safety in static load test, preferably, the height adjusting assembly is controlled to be retracted to a state that the test tool is separated from a test plane, specifically, the height adjusting assembly is reversely retracted to a state of being flush with the bottom surface of the main frame or even shorter, when the test tool is prevented from falling abnormally, 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 unstable test and uncontrollable conditions caused by abrupt tension change, in the method for static load test, the method for connecting the equipment to be tested and the test tool specifically comprises the steps of 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 establish tension. Preferably, after the step of setting up the tension is completed by adjusting the height adjusting component to extend out of the bottom surface of the main frame, the height adjusting component is retracted again, so that the main frame is stably emptied and the position is not changed, and the equipment to be tested stably bears the weight of the test fixture.
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, can also be used for testing a manned submersible, an ROV and an ARV guide joint A frame, and aims at some special devices with self-moving tracks. The static load test method specifically further 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 test, open to the protection pad in aerify to avoid this device weight to press on the track, avoid this device to collide the track damage that the track leads 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 for a set time so that the test fixture is lifted away from a test plane by the equipment to be tested and moves for a set distance to perform the inboard and outboard dynamic load tests, as shown in fig. 2.
In the dynamic load test, the state of the test tool is not particularly limited, namely, the state of the height adjusting assembly is not limited, and the test tool can be protruded out of the bottom surface of the main frame to be in contact with the test plane, can also be retracted into the main frame, and is directly in contact with the test plane by the main frame.
In order to simplify the process steps, in the dynamic load test method, the test tool is placed on the test plane, and specifically includes adjusting the test tool until the height adjusting component is retracted in the main frame, so that the main frame is in contact with the test plane.
Likewise, in order to improve the test efficiency, in this embodiment, before the device to be tested starts to operate and is ready to be lifted off the test fixture, tension is preferably established on the connection member connecting the device to be tested and the test fixture.
In order to perform multiple tests with different set test loads and match test requirements of different equipment to be tested through the same test fixture, in this embodiment, the main frame is provided with a cavity for bearing the weight piece. The load test method further comprises the steps of: and adjusting the weight of the test tool to a set load.
According to the load test method provided by the embodiment, when static load test is carried out, if the equipment cannot hoist the static load weight, the height adjusting assembly is controlled to move to 200-500 mm above the bottom surface of the main frame, then the weight piece is assembled in the cavity of the test tool, the total weight of the test tool is adjusted to the 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 reversely retract to be at least flush with the bottom surface of the main frame, and when the height adjusting assembly leaves the test plane, setting the load by the equipment completely, standing for a set time and observing, thereby completing the high-weight static load test of the equipment. When the dynamic load test is carried out, the whole test tool is lifted off the test plane by the action force of the equipment to be tested, and the equipment to be tested moves dynamically.
Example 2
The test fixture for implementing the load test method in the above embodiment 1 provided in this embodiment includes a main frame 1 and a height adjusting assembly, and meets the static load test requirements and dynamic load test requirements of various devices, as shown in fig. 3 to 8. Wherein the main frame 1 has a hook portion for connecting with a device to be tested; the height adjusting component is arranged on the main frame 1 and is used for adjusting the overall height of the test tool, and specifically: the height adjustment assembly may be moved forward to protrude from the bottom surface of the main frame 1 and retracted backward to be at least flush with the bottom surface of the main frame 1 so that the main frame 1 of the test fixture may be placed directly on the test plane or the height adjustment assembly may be in contact with the test plane so that there is no contact between the main frame 1 and the test plane. I.e. the test fixture may be placed on the test plane through the bottom surface of the main frame 1 or may be placed on the test plane through the extended height adjustment 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, the design load range of the equipment to be tested can be exceeded, the test tool cannot be directly hung up, in order to change the height of the test tool by utilizing the height adjusting component during the load test, the distance between the hook part and the equipment to be tested is shortened, the vertical height of a hanging rope is saved, after the hook part and the hook part of the equipment are tensioned, the shrinkage component is retracted, the equipment is emptied, the static load weight can be born by the equipment at the moment, thereby the equipment high-weight static load test is completed, the technical problems that the hanging vertical height is insufficient, the test tool cannot be hung up are solved, and the problems of high load test cost, long period, low efficiency 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 depends on the height adjusting assembly, and in order to ensure the stability of placement, the height adjusting assembly comprises at least three hydraulic cylinders 2 arranged at intervals. For ease of installation, in this embodiment, the cylinder portion 21 of the hydraulic cylinder 2 is fixed to the side surface of the main frame 1, and the rod portion 22 is used for movable extension.
In this embodiment, the main frame 1 is rectangular, the height adjusting assembly includes 6 hydraulic cylinders 2, and the 6 hydraulic cylinders 2 are divided into two groups, and every three hydraulic cylinders 2 are distributed on the long side of the main frame 1 at intervals, preferably, four hydraulic cylinders 2 are connected to the top corner of the main frame 1.
The height adjusting component is not particularly limited to be arranged with the main frame 1, and can be shorter than the bottom surface of the main frame 1 in a contracted state or flush with the bottom surface of the main frame 1, and in the embodiment, the height adjusting component is flush with the bottom of the main frame 1 after being contracted and can extend out of the bottom 500mm of the main frame 1.
In this embodiment, can effectively promote the height of couple portion through high adjusting part when carrying out the static test, realize shortening hoist and mount vertical height's effect. However, when the dynamic load test is performed, the height adjusting assembly is always in a stretching state, and at the moment, the problem that the vertical lifting height is high, such as a retractable A frame of a manned submersible, an ROV, an ARV and the like, is also solved, and the static load test and the dynamic load test can not be met by a common test tool because the guide joint is 3m-4m away from the deck and the load is 20 tons-55 tons. In order to achieve the lifting 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 designed into a structure with variable weight, and particularly, the test tool also comprises a weight piece, the main frame 1 is provided with a cavity for accommodating the weight piece, so that the load weight of the test tool is changed, the weight is balanced according to the load to be tested, and 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 composed of i-steel beams which are arranged at intervals and connected, so that the weight of up to 60 tons can be borne.
The test fixture further comprises a lifting component arranged on the main frame 1, and the hooking part is arranged on the lifting component. In order to ensure stability after suspension and to effectively shorten the length of the suspension cord, in this embodiment, it is preferable that the hook portion is provided at the top of the main frame 1 and at the middle.
In order to ensure stable connection of the lifting assembly and the main frame 1 to ensure the strength of the suspension, in this embodiment, the lifting assembly includes a connecting member 3 and a lifting 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 portions are at least two through holes 41 provided at intervals on the lifting lever 4.
In order to give consideration to daily maintenance operations, in this embodiment, the test fixture further includes a hydraulic pump station 5, a hydraulic oil supply cabinet 6 and a storage box 7 for storage, which are disposed on the main frame 1, and provides oil for oiling and supplementing operations for manned submersible vehicles and the like. When the manned submersible is retracted or lowered, the device is suspended to the tail of the ship, and oil is filled into the submersible through the hose.
When the test fixture is applied to equipment tests comprising a migration track, such as manned vehicles, ROVs, ARVs and the like, the migration track is arranged right below an A frame to be tested, and in order to protect the track, in the embodiment, a protection pad is arranged on the bottom surface of the main frame 1, so that the weight of the test fixture is prevented from being pressed on the track during static load tests, and meanwhile, the test fixture is prevented from colliding with the track, so that the track is damaged.
The test fixture further comprises a flushing assembly 8 and an air supply assembly 9, and the flushing assembly 8 and the air supply assembly 9 are arranged on the main frame 1; the flushing assembly 8 comprises a fresh water supply tank 81, a sea water supply tank 82 and hoses; the air supply assembly 9 comprises a compressed air supply 91 for drying, an oxygen supply 92 for supplying oxygen and an air supply hose. Specifically, the hose is used for filling oxygen into the oxygen cylinder of the submersible, so that the submersible can be used for deep diving of a diver or used for first-aid oxygen supply. When the manned submersible, ROV, ARV, sea entering equipment and the like are retracted and boarding, the flushing assembly 8 is opened, sea creatures, sludge, impurities and the like are flushed away by the sea water flushing equipment, then the sea water on the surface of the equipment is flushed away by the fresh water flushing equipment, the equipment is prevented from being corroded by residual sea water, the compressed air supply piece 91 is opened when necessary, the equipment is dried by compressed air, and the integral performance of the equipment is ensured.
In the maintenance process, personnel can climb on the device or climb on the top of the main frame 1 through a boarding ladder in the storage box 7 contained on the side surface of the main frame 1, and rinse and blow-dry the various positions of the equipment through the compressed air supply part 91 and the rinsing component 8, thereby achieving omnibearing maintenance.
The working principle and the using method of the test tool provided by the embodiment are as follows:
1. the device is used for a load test of equipment such as a conventional A frame, a crane and the like;
the device satisfies the equipment load requirement, can directly hoist the device with equipment, can finely tune weight with ballast iron, and equipment lifting hook directly or through shackle hanging on lifting rod 4 saves vertical distance, saves wire rope, prevents to rock, accomplishes the load test. The connecting piece 3 and the lifting rod 4 are integrally detached, the weight required by the equipment is adjusted by pressurizing iron, crane weights, steel plates and the like in the main frame 1, the connecting piece 3 and the lifting rod 4 are installed, the lifting hook is directly hung on the lifting rod 4 or through shackle, the vertical distance is saved, a steel wire rope is omitted, shaking is prevented, and a load test is completed.
When the equipment is used for a static load test, if the equipment cannot hoist the static load weight, the hydraulic pump station 5 is firstly opened, the hydraulic cylinder 2 is controlled to stretch by 200 mm-500 mm, then the connecting piece 3 and the lifting rod 4 are detached, the main frame 1 is internally provided with a heavy block or ballast iron, the equipment hook is hung on the lifting rod 4 to be tensioned, and 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 born by the equipment, and the high-weight static load test of the equipment is completed.
2. The test device is used for a load test of a manned submersible, an ROV and an ARV guide joint A frame;
static load test: firstly, a hydraulic pump station 5 is opened, a hydraulic cylinder 2 is controlled to extend by 400mm, the device is hung to a proper position below an A frame, then a connecting piece 3 and a lifting rod 4 are detached, a weight or a ballast iron is filled in a main frame 1 to 35-56 tons, 2 lug plates of a manned submersible, ROV and ARV guide joint are connected to 2 holes of the lifting rod 4 through a butt joint shackle, the vertical height of a steel wire rope is saved, then the hydraulic cylinder 2 is controlled to be shortened to be the shortest through the hydraulic pump station 5, so that the static load weight can be born by the 2 lug plates of the guide joint and kept for 15 minutes, and the high-weight static load test of equipment is completed. Because manned submersible, ROV, ARV move the track under frame a, in order to protect the track, during the test, open compressed air supply 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 lug plates of the manned submersible, the ROV and the ARV guide joint are connected to 2 holes of the lifting rod 4 through the butt shackle, the vertical height of a steel wire rope is saved, and the device is lifted through the A frame to carry out the inboard and outboard dynamic load test.
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 static load test, the height adjusting component 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 a vacated state in the state, and the weight of the test tool is transferred to the test plane by the height adjusting component. The load can be completely loaded onto the equipment to be tested by only 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 the process of static load test, namely, an actuating mechanism of the equipment to be tested does not need to act with load, the actuating mechanism of the equipment to be tested is controlled to act to a working state in advance under the condition of no load, the preset test load is loaded by the height adjusting assembly in a retracting mode, stable performance of the static load test is guaranteed, and the technical problem that the equipment to be tested cannot lift the test tool to perform the static load test is solved.
2) According to the test tool provided by the invention, the integral 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, after the hook part and the hook part of the equipment are tensioned, the shrinkage component is retracted, the equipment is emptied, and the static load can be born by the equipment at the moment, so that the high-weight static load test of the equipment is completed, the technical problems that the lifting vertical height is insufficient and the test tool cannot be lifted are solved, and meanwhile, 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 expansion and contraction, the supporting effect, the manufacturing process, the test convenience and the operation feasibility, and solves the technical problems of insufficient hoisting vertical height, high load test cost, long period, no high-efficiency tool and the like. The device can be used for daily maintenance of ships, the device is hung to a maintenance position, a flushing assembly is opened, and a deck, a railing, an equipment base and the like are flushed by fresh water or seawater; opening a hydraulic pump station to perform 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 leaked hydraulic oil of the hydraulic system. The oxygen supply part is used as a personnel emergency aid and provides oxygen for emergency use of a diver, a person carelessly falling off the sea, a sick person 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. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.
Claims (9)
1. The load test method is used for testing equipment to be tested of a ship and is characterized in that the load test method carries out a 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 in a test plane; the test fixture is adjusted to the point that the height adjusting component 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 through a connecting piece, and adjusting the connecting piece to enable the connecting piece to establish tension;
and controlling the height adjusting assembly to retract until the whole test tool is separated from the test plane, so that the equipment to be tested bears the weight of the test tool, and observing the state of the equipment to be tested.
2. The weight testing method of claim 1, wherein the bottom of the main frame is further provided with an inflatable protective cushion;
the static load test method specifically further 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.
3. The load testing method of claim 1, wherein the load testing method further comprises:
the dynamic load test method comprises the following steps:
placing the test tool in the test plane; connecting the equipment to be tested and the test tool;
and controlling the equipment to be tested to act for a set time, so that the test fixture is lifted away from the test plane by the equipment to be tested and moves for a set distance.
4. A load testing method according to claim 3, wherein in the dynamic load testing method, the test tool is placed on the test plane, specifically comprising:
and adjusting the test fixture to the height adjusting assembly to retract in the main frame so as to enable the main frame to be in contact with the test plane.
5. The load testing method of any one of claims 1-4, wherein the main frame has a cavity for carrying a weight; the load test method further comprises: and adjusting the weight of the test tool to set load.
6. A test fixture for carrying out the load test method according to any one of claims 1 to 5, comprising:
a main frame having a hook portion for connecting with the device to be tested;
the height adjusting assembly is arranged on the main frame and used for adjusting the overall height of the test tool.
7. The test fixture of claim 6, wherein the height adjustment assembly comprises at least three hydraulic cylinders arranged at intervals; the test fixture further includes a weight, and the main frame has a cavity for receiving the weight.
8. The test fixture of claim 6, further comprising a connector and a boom; the connecting piece is connected with the main frame, the connecting piece 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 part is at least two through holes which are arranged on the lifting rod at intervals.
9. The test fixture of any one of claims 6-8, further comprising a hydraulic pump station, a hydraulic oil supply tank, and a storage box for storage disposed on the main frame;
the test fixture further comprises a flushing assembly and an air supply assembly, wherein the flushing assembly and the air supply assembly are both arranged on the main frame; the flushing assembly comprises a fresh water supply tank, a sea water 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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| CN202111600757.0A CN114620198B (en) | 2021-12-24 | 2021-12-24 | Load test method and test tool |
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| CN202111600757.0A CN114620198B (en) | 2021-12-24 | 2021-12-24 | Load test method and test tool |
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| CN114620198B true CN114620198B (en) | 2023-07-18 |
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| AU1517399A (en) * | 1997-11-25 | 1999-06-15 | Choon Loong Chong | Load creation apparatus and method |
| FR2807837B1 (en) * | 2000-04-13 | 2002-07-19 | Bretagne Loire Snc Soc Const | METHOD FOR THE STATIC TESTING OF A LIFTING MACHINE |
| 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 |
| CN106741605B (en) * | 2016-11-30 | 2019-02-22 | 中船黄埔文冲船舶有限公司 | A kind of pipeline dragging system for the progress load test on hull |
| CN206862607U (en) * | 2016-11-30 | 2018-01-09 | 中国石油大学(华东) | A kind of new structure slow test loading experiment frame |
| 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 |
| RU188284U1 (en) * | 2019-01-09 | 2019-04-04 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тихоокеанский государственный университет" | Loading device for static testing of hoisting machines equipped with a working platform |
| CN110285952B (en) * | 2019-06-28 | 2021-08-31 | 中船黄埔文冲船舶有限公司 | Lifeboat hanger test tool |
| CN111591879B (en) * | 2020-05-28 | 2022-03-25 | 南通振华重型装备制造有限公司 | Novel lifeboat static load test method |
| CN111947951B (en) * | 2020-07-03 | 2022-07-26 | 中国船舶重工集团公司第七0四研究所 | Land test device and method for submersible lifting system |
| CN112129561A (en) * | 2020-09-04 | 2020-12-25 | 中船黄埔文冲船舶有限公司 | Crane load test method |
| CN113418799A (en) * | 2021-05-27 | 2021-09-21 | 国网浙江省电力有限公司金华供电公司 | Device for pole holding static load test |
| CN113532832B (en) * | 2021-07-27 | 2023-07-25 | 武汉中科医疗科技工业技术研究院有限公司 | Loading device, loading system and loading method thereof |
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