CN116558761A - High-speed water impact test device that goes into of structure based on spring is with higher speed - Google Patents
High-speed water impact test device that goes into of structure based on spring is with higher speed Download PDFInfo
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- CN116558761A CN116558761A CN202310530505.8A CN202310530505A CN116558761A CN 116558761 A CN116558761 A CN 116558761A CN 202310530505 A CN202310530505 A CN 202310530505A CN 116558761 A CN116558761 A CN 116558761A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 238000009863 impact test Methods 0.000 title claims abstract description 25
- 230000001133 acceleration Effects 0.000 claims abstract description 42
- 230000005484 gravity Effects 0.000 abstract description 5
- 238000005381 potential energy Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
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- 239000002775 capsule Substances 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
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- 230000001360 synchronised effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention relates to a high-speed water inlet impact test device of a structure based on spring acceleration, which comprises a tower, a lifting device, a spring acceleration module, a guide rail, an electromagnetic chuck, a counterweight plate and an angle adjusting device, wherein the lifting device is arranged on the tower; the bottom end of the tower frame is fixed in the test pool, the lifting device is arranged above the top plate of the tower frame, the spring acceleration module is arranged below the top plate of the tower frame, the upper end of the guide rail is fixedly connected with the top plate of the tower frame, and the lower end of the guide rail is fixed in the test pool; the upper end of the electromagnetic chuck is connected with the lifting device through a first traction rope, and the lower end of the electromagnetic chuck can be connected with or disconnected from the counterweight plate; the weight plate is slidably mounted on the guide rail and can freely move along the guide rail below the spring acceleration module under the drive of the lifting device, and the lower end of the weight plate is provided with the test model through the angle adjusting device. According to the invention, the elastic potential energy of the spring is utilized to pre-accelerate the structure, and then gravity is utilized again to accelerate, so that the requirement of high-speed water inlet impact of the structure is finally met; meanwhile, the water inlet impact angle of the test model can be changed at any time.
Description
Technical Field
The invention relates to the technical field of structural water-in impact tests, in particular to a structural high-speed water-in impact test device based on spring acceleration.
Background
When a ship sails at a high speed under severe sea conditions, the head structure of the ship body inevitably generates high-speed water entering impact, however, the severe impact effect can even lead to the damage of the local structure of the ship body, so that the life and property safety of personnel are seriously threatened. In recent years, the seaplane is continuously used for performing important tasks such as maritime patrol, rescue, forest fire extinguishment and the like, for example, a 'spread dragon-600' is a large-scale fire extinguishment and water rescue amphibious plane which is independently designed and developed in China, however, the design difficulty of the seaplane comprises how to ensure the safety of the plane and realize landing and taking off on water, and the problem of high-speed water entering impact of a structure is also related. In addition, the problem of high velocity entry of the projectile or entry water impact into the capsule has received extensive attention from many students. Aiming at the problem of high-speed water inlet impact of the structure, the current test method is still a main research means for analyzing the water inlet impact load of the structure and the dynamic response behavior of the structure.
In order to ensure the reliability and stability of the structure water impact test result, and to protect related equipment, most of the existing test devices are installed in a laboratory. In order to achieve a certain water impact speed of the test model, the current test means generally raise the structure to a certain height above the water surface, and then accelerate the structure by means of gravity. However, for high-speed water-entry impact conditions, this method requires a large initial water-entry height, for example, to achieve a water-entry impact speed of 10m/s, and a water-entry height of 5.1 m without taking friction into consideration, which is obviously difficult to achieve inside a laboratory, and the greater the height of the device, the worse the safety. In addition to the water entry velocity of the structure, the water entry impact angle of the structure is also often an important research factor, and the impact angle change has a great influence on the structural load and response behavior. At present, the existing structure water inlet impact test device cannot meet the two test requirements of high-speed water inlet and adjustable impact angle of the structure, so that a test device capable of meeting the above conditions is needed, and a test foundation is laid for researching the problem of high-speed water inlet impact of the structure.
Disclosure of Invention
The invention aims at solving the technical problems that the conventional structural water inlet impact test device cannot meet the two test requirements of structural high-speed water inlet and adjustable impact angle at the same time, and provides a spring acceleration-based structural high-speed water inlet impact test device which can meet the requirements of structural high-speed water inlet impact and can meet the requirements of different water inlet impact angles.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a high-speed water inlet impact test device of a structure based on spring acceleration comprises a tower, a lifting device, a spring acceleration module, a guide rail, an electromagnetic chuck, a weight plate and an angle adjusting device; the bottom end of the tower is fixed in a test pool, the lifting device is arranged above a top plate of the tower, the spring acceleration module is arranged below the top plate of the tower, the upper end of the guide rail is fixedly connected with the top plate of the tower, and the lower end of the guide rail is fixed in the test pool; the upper end of the electromagnetic chuck is connected with the lifting device through a first traction rope, and the lower end of the electromagnetic chuck can be connected with or disconnected from the counterweight plate; the weight plate is slidably mounted on the guide rail and can freely move along the guide rail under the spring acceleration module under the drive of the lifting device, and the lower end of the weight plate is provided with a test model through the angle adjusting device; the spring acceleration module comprises an upper cover plate, a lower cover plate, a strong spring, a connecting rod and a limiting piece, wherein the upper cover plate is fixedly arranged below a top plate of the tower, the lower end of the connecting rod is fixedly connected with the lower cover plate, the upper end of the connecting rod sequentially penetrates through the upper cover plate and the top plate of the tower and then is provided with the limiting piece, and the strong spring is arranged between the upper cover plate and the lower cover plate; the angle adjusting device comprises an adjusting rod, a rotating shaft, a rotating base, a locking cap and a fastening piece, wherein the upper end of the adjusting rod is fixedly connected with the counterweight plate, the lower end of the adjusting rod is slotted and is provided with a rotating shaft hole, the rotating shaft is arranged in the rotating shaft hole, the rotating base comprises a bottom plate and an adjusting plate, the bottom plate is fixedly connected with a test model, the adjusting plate penetrates through the rotating shaft to be arranged in the slot at the lower end of the adjusting rod, and the adjusting plate can rotate around the rotating shaft to adjust the water inlet angle of the test model and realize angle fixation through the cooperation of the locking cap and the fastening piece.
In the above scheme, the through holes used for the first traction rope to pass through are all formed in the middle parts of the top plate, the upper cover plate and the lower cover plate of the tower, and the size of the through holes is larger than that of the electromagnetic chuck.
In the scheme, the lower surface of the upper cover plate and the upper surface of the lower cover plate are correspondingly provided with the spring grooves, and the powerful springs are arranged in the spring grooves.
In the above scheme, the connecting rod passes through the strong spring to be arranged; the lower end of the connecting rod is fixedly connected with the spring groove of the lower cover plate, and the upper end of the connecting rod penetrates through the spring groove of the upper cover plate.
In the scheme, first racks are machined on two sides of the adjusting plate; the locking cap is arranged on two sides of the adjusting plate and comprises a rack disc and a second sleeve, a second rack is machined on one side, close to the adjusting plate, of the rack disc, the second rack can be meshed with the first rack to fix the rotation angle of the rotating base, the second sleeve is arranged on one side, far away from the adjusting plate, of the rack disc and penetrates through a rotating shaft hole in the lower end of the adjusting rod, and the rotating shaft penetrates through the second sleeve; the fastener is arranged on the outer side of the adjusting rod and used for adjusting the meshing state of the first rack and the second rack.
In the above scheme, the second sleeve surface is equipped with a plurality of spacing teeth, the pivot hole of adjusting the pole lower extreme be equipped with spacing groove of spacing tooth adaptation, spacing tooth installs in spacing groove for the second sleeve can only follow the axial movement of pivot.
In the scheme, threads are machined at two ends of the rotating shaft, the fastening piece adopts the screw cap, and the second rack and the first rack are meshed with each other by tightening the screw cap to push the locking cap to move, so that the fixing of the rotating angle is realized.
In the scheme, the angle adjusting devices are symmetrically arranged in a plurality of groups along two sides of the test model.
In the above scheme, the test device further comprises a speed calibration module, wherein the speed calibration module comprises a second traction rope, a pulley, a plumb, a pointer and a graduated scale; one end of the second traction rope is fixed on the electromagnetic chuck, the other end of the second traction rope bypasses the pulley and then is connected with the plumb, and the pointer is arranged on one side close to the plumb; the pulley is arranged on the top plate of the tower and used for transmitting the second traction rope; the graduation scale is arranged on the outer side of the tower and used for marking critical impact speeds corresponding to different heights, and the water inlet impact speed corresponding to the current height can be determined by reading graduations corresponding to the pointer in the test.
In the scheme, a plurality of second hanging rings are symmetrically arranged on the counterweight plate, a lock catch corresponding to the second hanging rings is arranged on the tower, and the second hanging rings and the lock catch are connected through a pull rope in the test preparation stage or after the single water inlet impact test is finished.
The invention has the beneficial effects that:
1. according to the test device, the spring acceleration module is designed above the bench, the elastic potential energy of the spring is utilized to pre-accelerate the structure, so that the structure has a high speed when falling, and then the gravity is utilized again to accelerate, and finally, the requirement of high-speed water inlet impact of the structure is met; meanwhile, the water inlet impact angle of the test model can be changed at any time through the angle adjusting device, the stability of the impact angle can be kept in the test process through the structural design of the angle adjusting device, and the water inlet impact test requirements of different structures can be met.
2. According to the test device disclosed by the invention, the speed calibration module is designed on the outer side of the tower, the corresponding water inlet impact speeds under different falling body height working conditions can be converted by combining the spring parameters and the initial falling heights, the water inlet impact speeds are recorded on the graduated scale, the water inlet impact speed corresponding to the current height can be determined by reading the graduations corresponding to the pointer in the test, and the water inlet impact speed can be accurately controlled.
3. The test device has the advantages of simple structure, high test precision, reliable operation and high safety.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic view of the overall structure of the test device of the present invention;
FIG. 2 is a schematic rear side view of the overall structure of the test device of the present invention;
FIG. 3 is a schematic diagram of the overall assembly of a spring acceleration module of the test apparatus of the present invention;
FIG. 4 is a schematic view of the lower cover plate structure of the spring acceleration module of FIG. 3;
FIG. 5 is a schematic view of the overall assembly of the weight plate, smooth rail, angle adjustment device and test model of the test device of the present invention;
FIG. 6 is a schematic view of the overall structure of the angle adjusting device of the test device of the present invention;
FIG. 7 is a schematic view of the structure of an adjusting lever of the angle adjusting device shown in FIG. 6;
FIG. 8 is a schematic view of the rotating base of the angle adjusting device of FIG. 6;
FIG. 9 is a schematic view of the locking cap of the angle adjustment apparatus of FIG. 6;
FIG. 10 is a schematic diagram of the speed calibration module of the test apparatus of the present invention.
In the figure: 10. a tower; 11. a top plate; 12. a stiffening beam; 13. locking; 20. a working platform; 30. a lifting device; 31. a first traction rope; 40. a spring acceleration module; 41. an upper cover plate; 42. a lower cover plate; 43. a strong spring; 44. a connecting rod; 45. a spring groove; 46. a limiting piece; 50. a guide rail; 60. an electromagnetic chuck; 61. a first hanging ring; 70. a weight plate; 71. a first sleeve; 72. the second hanging ring; 80. an angle adjusting device; 81. an adjusting rod; 82. a rotating shaft; 83. rotating the base; 831. a bottom plate; 832. an adjusting plate; 84. a locking cap; 841. a rack plate; 842. a second sleeve; 843. limit teeth; 85. a fastener; 90. a speed calibration module; 91. a second traction rope; 92. a pulley; 93. a plumb bob; 94. a pointer; 95. a graduated scale; 200. and (5) a test model.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
As shown in fig. 1-2, a high-speed water-entering impact test device based on a spring acceleration structure provided by an embodiment of the invention comprises a tower 10, a lifting device 30, a spring acceleration module 40, a guide rail 50, an electromagnetic chuck 60, a weight plate 70 and an angle adjusting device 80. The bottom end of the tower 10 is fixed in a test pool, the lifting device 30 is arranged above the top plate 11 of the tower 10, and the spring acceleration module 40 is arranged below the top plate 11 of the tower 10. The guide rail 50 is arranged outside the spring acceleration module 40, the upper end of the guide rail 50 is fixedly connected with the top plate 11 of the tower 10, and the lower end of the guide rail is fixed in the test pool. The upper end of the electromagnetic chuck 60 is connected with the lifting device 30 through the first traction rope 31, and the lower end of the electromagnetic chuck can be connected with or disconnected from the weight plate 70. The weight plate 70 is slidably mounted on the guide rail 50 and can freely move along the guide rail 50 under the spring acceleration module 40 driven by the lifting device 30, the test model 200 is mounted at the lower end of the weight plate 70 through the angle adjusting device 80, and the water entry speed of the test model 200 is adjusted and stabilized through the angle adjusting device 80. The electromagnetic chuck 60 can be firmly adsorbed on the weight plate 70 in the electrified state, the electromagnetic chuck 60 is pulled upwards through the lifting device 30 in the test, the weight plate 70 and the test model 200 below the weight plate are driven to move upwards along the guide rail 50 to the designated test height, and the spring acceleration module 40 is compressed; in the de-energized state of the electromagnetic chuck 60, the weight plate 70 is released, and the weight plate 70 moves down along the guide rail 50 into the test pool under the resilience of the spring acceleration module 40 and its own weight.
As shown in fig. 3-4, the spring acceleration module 40 includes an upper cover 41, a lower cover 42, a strong spring 43, a connecting rod 44, and a stopper 46. The upper cover 41 is fixedly (such as welded or bolted) installed below the top plate 11 of the tower 10, the lower end of the connecting rod 44 is fixedly connected with the lower cover 42, the upper end of the connecting rod 44 sequentially passes through the upper cover 41 and the top plate 11 of the tower 10 and then is provided with a limiting piece 46, and the strong spring 43 is arranged between the upper cover 41 and the lower cover 42. Through holes with the same size are formed in the middle of the top plate 11, the upper cover plate 41 and the lower cover plate 42 of the tower 10, the size of the through holes is larger than that of the electromagnetic chuck 60, and the first traction rope 31 sequentially penetrates through the three through holes. A plurality of spring grooves 45 are formed around the through holes of the upper cover plate 41 and the lower cover plate 42 for installing the strong springs 43. For the lower cover plate 42, a threaded hole is machined in each spring groove 45; for the upper cover plate 41, a through hole is formed in each spring groove 45, and meanwhile, a through hole is formed at a position corresponding to the upper cover plate 41 on the top plate 11, so that the connecting rod 44 can smoothly pass through the top plate 11. Preferably, the connecting rod 44 adopts a screw rod, the limiting piece 46 adopts a screw cap, two ends of the screw rod are tapped, the lower end of the screw rod is installed in a threaded hole of the lower cover plate 42, and the upper end of the screw rod sequentially passes through the powerful spring 43, the upper cover plate 41, the top plate 11 and the rear assembly screw cap without tight fit.
When the lower cover plate 42 receives upward thrust of the weight plate 70, the powerful spring 43 is compressed, the connecting rod 44 is driven to move upwards, when the powerful spring 43 is compressed to a specified position, namely, the impact speed requirement is met, the electromagnetic chuck 60 is disconnected, and the test model 200 accelerates to impact into water under the thrust of the powerful spring 43 and gravity; when the strong spring 43 is completed, the stopper 46 at the upper end of the connecting rod 44 can restrict the lower cover 42 from stopping at the initial position and restore the spring acceleration module 40 to the initial state.
As shown in fig. 5, four smooth guide rails 50 are installed at the outer side of the spring acceleration module 40, the weight plate 70 is connected with the four smooth guide rails 50 through four first shaft sleeves 71, and the shaft sleeves and the guide rails 50 are lubricated to reduce the influence of friction force on the test speed. The lower part of the weight plate 70 is connected with the test model 200 through four angle adjusting devices 80, and the stability of the impact angle in the test process can be ensured by using the four angle adjusting devices 80.
As shown in fig. 6 to 9, the angle adjusting device 80 includes an adjusting lever 81, a rotating shaft 82, a rotating base 83, a locking cap 84, and a fastener 85. The upper end of the adjusting rod 81 is fixedly connected with the weight plate 70 (such as a screw and a nut), the lower end of the adjusting rod 81 is grooved and is provided with a rotating shaft hole for installing the rotating base 83 and the locking cap 84, and the rotating shaft hole is used for installing the rotating shaft 82. The rotating base 83 comprises a bottom plate 831 and an adjusting plate 832, the bottom plate 831 is fixedly connected with the test model 200, the adjusting plate 832 is installed in the middle of the rotating shaft 82 and is positioned in a groove at the lower end of the adjusting rod 81, the adjusting plate 832 can rotate around the rotating shaft 82 to adjust the water inlet angle of the test model 200, and first racks are machined on two sides of the adjusting plate 832. The locking cap 84 is mounted on both sides of the adjusting plate 832, and the locking cap 84 includes a rack plate 841 and a second bushing 842; a second rack is formed on one side of the rack plate 841, which is close to the adjusting plate 832, and can be engaged with the first rack to fix the rotation angle of the rotation base 83; the second shaft sleeve 842 is mounted on one side of the rack plate 841 away from the adjusting plate 832, and penetrates through a rotating shaft hole at the lower end of the adjusting rod 81, and the rotating shaft 82 penetrates through the second shaft sleeve 842; the surface of the second shaft sleeve 842 is provided with a plurality of limiting teeth 843, a rotating shaft hole at the lower end of the adjusting rod 81 is provided with a limiting groove matched with the limiting teeth 843, and the limiting teeth 843 are arranged in the limiting groove so that the second shaft sleeve 842 can only move along the axial direction of the rotating shaft 82. The fastener 85 is installed on the outer side of the adjusting rod 81, and is used for adjusting the meshing state of the first rack and the second rack, preferably, threads are machined at two ends of the rotating shaft 82, the fastener 85 adopts a nut, and the second rack and the first rack are meshed with each other by pushing the locking cap 84 to move by tightening the nut, so that the fixing of the rotating angle is realized.
As shown in fig. 10, in order to obtain critical water impact speeds corresponding to different heights in real time, a speed calibration module 90 is designed on the outer side of the tower 10. The speed calibration module 90 comprises a second haulage rope 91, a pulley 92, a plumb 93, a pointer 94 and a graduated scale 95; one end of a second traction rope 91 is fixed on the electromagnetic chuck 60, the other end of the second traction rope bypasses a pulley 92 and is connected with a plumb 93, and a pointer 94 is arranged on one side close to the plumb 93; a pulley 92 is mounted on the top plate 11 of the tower 10 for transmitting a second traction rope 91; a graduated scale 95 is mounted on the outside of the tower 10 for identifying critical impact velocities corresponding to different heights. When the electromagnetic chuck 60 is lifted, the other end plumb 93 pulls the second traction rope 91 downwards, the pointer 94 also moves downwards, and the impact speed corresponding to different heights can be obtained by comparing the graduated scale 95. The current height corresponding water impact velocity can be determined by reading the scale corresponding to the pointer 94 in the test.
In addition to utilizing the gravitational potential energy of the falling test model 200, the device designs a spring acceleration module 40, so that it is not reasonable to perform speed conversion according to the falling height. According to conservation of energy, gravitational potential energy and elastic potential energy can be finally converted into kinetic energy of the structure, so that corresponding water inlet impact speeds under different falling body height working conditions can be converted by combining spring parameters and initial falling heights, and the water inlet impact speeds are recorded on the graduated scale 95. The water inlet impact angle of the test model 200 can be changed by the angle adjusting device 80 before the test starts; in the test process, the electromagnetic chuck 60 is pulled by controlling the two synchronous windlass and drives the counterweight plate 70 and the test model 200 to move upwards along the smooth guide rail 50, and the size of the round hole in the middle of the spring acceleration module 40 is larger than that of the electromagnetic chuck 60, so that the electromagnetic chuck 60 can normally pass through and drive the counterweight plate 70 to compress the spring acceleration module 40, and meanwhile, when the specified speed is reached, the electromagnetic chuck 60 is disconnected and the test model 200 can accelerate to impact the water surface under the action of the spring and the gravity through reading the corresponding speed parameter of the pointer 94 on the graduated scale 95.
Further preferably, in this embodiment, the tower 10 is fixed at the bottom of the pool by a strong bolt at the bottom, and the horizontal and oblique reinforcing beams 12 are welded on the tower 10, so as to ensure that the structural strength of the tower 10 meets the test requirements. The side face of the tower 10 is provided with a working platform 20 which is a standing area of an operator in the test process, and an oblique supporting beam is welded below the working platform 20 and used for guaranteeing the strength requirement.
Further preferably, in this embodiment, the lifting device 30 includes two synchronously operated windlass symmetrically installed at two sides of the through hole of the top plate 11 of the tower 10.
Further preferably, in the embodiment, the upper surface of the electromagnetic chuck 60 is welded with a first hanging ring 61, two windlass working synchronously are connected with the first hanging ring 61 below through a first traction rope 31,
further preferably, in this embodiment, a plurality of second hanging rings 72 are symmetrically welded on the weight plate 70, and a lock catch 13 corresponding to the second hanging rings 72 is welded on the tower 10. In the test preparation stage, the second hanging ring 72 is connected with the lock catch 13 through the pull rope, so as to fix the weight plate 70, prevent potential safety hazards caused by falling of the weight plate 70 due to failure of the electromagnetic chuck 60 when the power is suddenly cut off, and also be used for timely fixing the weight plate 70 and the test model 200 below after the single water-in impact test is finished.
Further preferably, in this embodiment, the top end of the guide rail 50 is threaded and fixed to the top plate 11 by an assembly nut, and the bottom end of the guide rail 50 is assembled and fixed to an embedded nut at the bottom of the pool.
Further preferably, in this embodiment, four through holes are machined in the bottom plate 831 of the rotating base 83, and are fixed to the test model 200 by bolts.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (10)
1. The high-speed water inlet impact test device for the structure based on spring acceleration is characterized by comprising a tower, a lifting device, a spring acceleration module, a guide rail, an electromagnetic chuck, a counterweight plate and an angle adjusting device;
the bottom end of the tower is fixed in a test pool, the lifting device is arranged above a top plate of the tower, the spring acceleration module is arranged below the top plate of the tower, the upper end of the guide rail is fixedly connected with the top plate of the tower, and the lower end of the guide rail is fixed in the test pool; the upper end of the electromagnetic chuck is connected with the lifting device through a first traction rope, and the lower end of the electromagnetic chuck can be connected with or disconnected from the counterweight plate; the weight plate is slidably mounted on the guide rail and can freely move along the guide rail under the spring acceleration module under the drive of the lifting device, and the lower end of the weight plate is provided with a test model through the angle adjusting device;
the spring acceleration module comprises an upper cover plate, a lower cover plate, a strong spring, a connecting rod and a limiting piece, wherein the upper cover plate is fixedly arranged below a top plate of the tower, the lower end of the connecting rod is fixedly connected with the lower cover plate, the upper end of the connecting rod sequentially penetrates through the upper cover plate and the top plate of the tower and then is provided with the limiting piece, and the strong spring is arranged between the upper cover plate and the lower cover plate;
the angle adjusting device comprises an adjusting rod, a rotating shaft, a rotating base, a locking cap and a fastening piece, wherein the upper end of the adjusting rod is fixedly connected with the counterweight plate, the lower end of the adjusting rod is slotted and is provided with a rotating shaft hole, the rotating shaft is arranged in the rotating shaft hole, the rotating base comprises a bottom plate and an adjusting plate, the bottom plate is fixedly connected with a test model, the adjusting plate penetrates through the rotating shaft to be arranged in the slot at the lower end of the adjusting rod, and the adjusting plate can rotate around the rotating shaft to adjust the water inlet angle of the test model and realize angle fixation through the cooperation of the locking cap and the fastening piece.
2. The spring acceleration-based high-speed water inlet impact test device of claim 1, wherein through holes for the first traction ropes to pass through are formed in the middle parts of a top plate, an upper cover plate and a lower cover plate of the tower, and the size of the through holes is larger than that of the electromagnetic chuck.
3. The spring acceleration-based high-speed water inlet impact test device according to claim 1, wherein a spring groove is formed in the lower surface of the upper cover plate and the upper surface of the lower cover plate, and the strong spring is installed in the spring groove.
4. The spring acceleration based high speed water impact test apparatus of claim 1, wherein the connecting rod is disposed through the strong spring; the lower end of the connecting rod is fixedly connected with the spring groove of the lower cover plate, and the upper end of the connecting rod penetrates through the spring groove of the upper cover plate.
5. The spring acceleration-based high-speed water inlet impact test device according to claim 1, wherein first racks are machined on two sides of the adjusting plate; the locking cap is arranged on two sides of the adjusting plate and comprises a rack disc and a second sleeve, a second rack is machined on one side, close to the adjusting plate, of the rack disc, the second rack can be meshed with the first rack to fix the rotation angle of the rotating base, the second sleeve is arranged on one side, far away from the adjusting plate, of the rack disc and penetrates through a rotating shaft hole in the lower end of the adjusting rod, and the rotating shaft penetrates through the second sleeve; the fastener is arranged on the outer side of the adjusting rod and used for adjusting the meshing state of the first rack and the second rack.
6. The spring acceleration-based high-speed water inlet impact test device according to claim 5, wherein a plurality of limiting teeth are arranged on the surface of the second sleeve, a limiting groove matched with the limiting teeth is formed in a rotating shaft hole at the lower end of the adjusting rod, and the limiting teeth are arranged in the limiting groove so that the second sleeve can only move along the axial direction of the rotating shaft.
7. The spring acceleration-based high-speed water inlet impact test device according to claim 5, wherein threads are formed at two ends of the rotating shaft, the fastening piece adopts a nut, and the second rack and the first rack are meshed with each other by tightening the nut to push the locking cap to move, so that the rotation angle is fixed.
8. The spring acceleration-based high-speed water impact test device for the structure of claim 1, wherein the angle adjusting devices are symmetrically arranged in a plurality of groups along two sides of the test model.
9. The spring acceleration based high speed water impact test apparatus of claim 1, further comprising a speed calibration module comprising a second traction rope, a pulley, a plumb, a pointer, and a graduated scale; one end of the second traction rope is fixed on the electromagnetic chuck, the other end of the second traction rope bypasses the pulley and then is connected with the plumb, and the pointer is arranged on one side close to the plumb; the pulley is arranged on the top plate of the tower and used for transmitting the second traction rope; the graduation scale is arranged on the outer side of the tower and used for marking critical impact speeds corresponding to different heights, and the water inlet impact speed corresponding to the current height can be determined by reading graduations corresponding to the pointer in the test.
10. The spring acceleration-based high-speed water impact test device for the structure of claim 1, wherein a plurality of second hanging rings are symmetrically arranged on the weight plate, a lock catch corresponding to the second hanging rings is arranged on the tower, and the second hanging rings and the lock catch are connected through a pull rope in a test preparation stage or after a single water impact test is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310530505.8A CN116558761A (en) | 2023-05-09 | 2023-05-09 | High-speed water impact test device that goes into of structure based on spring is with higher speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310530505.8A CN116558761A (en) | 2023-05-09 | 2023-05-09 | High-speed water impact test device that goes into of structure based on spring is with higher speed |
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| Publication Number | Publication Date |
|---|---|
| CN116558761A true CN116558761A (en) | 2023-08-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116818254A (en) * | 2023-08-31 | 2023-09-29 | 枣庄科顺数码有限公司 | Computer detection equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116818254A (en) * | 2023-08-31 | 2023-09-29 | 枣庄科顺数码有限公司 | Computer detection equipment |
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