A ship electric shock absorber testing device and testing method

Abstract

The present invention provides a ship electric shock absorber test device and test method, which relates to the field of ship electric shock absorber test technology. The test device includes a test box, on which a test bench is fixed; a mounting seat is provided on the test bench, and an annular test disk is provided in the mounting seat; a plurality of first pressure sensors are provided inside the test disk, and the shock absorber to be tested is arranged in the test disk, a clamping plate is provided above the mounting seat, a positioning rod is provided below the clamping plate, and a second pressure sensor is provided on the positioning rod. The beneficial effects of the present invention are as follows: the test device of the present invention can drive the clamping plate to press down, and can simultaneously complete the fixing of the positioning rod to the shock absorber fixing hole and the fixing of the locking and fixing assembly to the shock absorber center sleeve; wherein the first pressure sensor and the second pressure sensor realize synchronous analysis of the internal and external forces of the ship electric shock absorber, thereby accurately and comprehensively evaluating the dynamic buffering performance of the shock absorber to be tested, and providing a reliable basis for optimizing the shock absorber design.

Description

Technical Field

[0001] The present invention relates to the technical field of ship electric shock absorber testing, and in particular to a ship electric shock absorber testing device and a testing method. Background Art

[0002] Marine electrical equipment (ship electrical power equipment) is a core component of a ship's electrical system, primarily responsible for power generation, distribution, power conversion, energy storage, and power consumption control. The power generation process for marine electrical equipment is typically performed by an engine or generator set. When a ship's engine or generator set is in operation, the explosive force of periodic combustion within the cylinders causes the crankshaft to experience alternating torque, triggering torsional vibrations in the crankshaft system. Furthermore, the ship is also subject to wave impact during operation, and the housing of the marine electrical equipment also applies loads to the crankshaft system. Consequently, the crankshaft of the marine electrical equipment is subject to complex vibration loads. When the crankshaft resonates under the combined effects of these complex vibration loads, it can cause significant stress increases in components such as the crankshaft, gears, and shafting, leading to possible fracture. Therefore, a crankshaft isolation shock absorber needs to be installed between the crankshaft system and the shell of the ship electrical equipment. The crankshaft isolation shock absorber includes a center sleeve and an outer ring that can rotate relative to the center sleeve. When in use, the center sleeve is fixed on the crankshaft, and the outer ring is fixed to the shell through a fixing hole. The crankshaft isolation shock absorber absorbs or offsets these vibration energies through its internal elastic damping structure (the elastic damping structure is composed of multiple materials, such as rubber, silicone oil, springs, etc.) to avoid vibration superposition and resonance.

[0003] At present, when testing ship electric shock absorbers, it is usually necessary to fix the center sleeve of the ship electric shock absorber on the crankshaft, and test the vibration reduction performance of the crankshaft rotation through the eccentric load during the rotation of the crankshaft. The center sleeve sizes of different shock absorbers are different. For shock absorbers of different sizes, the crankshaft diameter sizes that are adapted are different. If shock absorbers of different sizes are tested, the crankshaft needs to be frequently replaced, which makes the operation cumbersome and inefficient. At the same time, when testing shock absorbers, the shock absorber needs to be frequently replaced and fixed. When fixing the shock absorber, not only the center sleeve needs to be fixed, but the shock absorber needs to be rotated to align the fixing holes and positioning rods. This operation process is cumbersome and can easily cause safety problems such as pinching the hands of workers during installation. In addition, the existing ship electric shock absorber testing equipment has limited detection dimensions and lacks synchronous monitoring of the pressure distribution of the inner and outer rings of the shock absorber, making it difficult to fully evaluate its dynamic buffering performance. Summary of the Invention

[0004] In view of this, the present invention provides a ship electric shock absorber testing device, comprising a test box, a test bench is fixed on the test box; a locking and fixing assembly is provided above the test box;

[0005] The test bench is provided with a mounting seat, a receiving hole is provided in the middle of the mounting seat and passes through the mounting seat, and an annular test disc is provided in the mounting seat; a plurality of first pressure sensors are provided inside the test disc, and the shock absorber to be tested is arranged in the test disc, and the outer wall of the shock absorber to be tested abuts against the first pressure sensors;

[0006] A driving motor and a crankshaft are provided in the test box. The lower end of the crankshaft is connected to the driving motor, and the upper end of the crankshaft is fixedly connected to a tensioning and fixing assembly.

[0007] The tensioning and fixing assembly includes a fixed shaft rod, the fixed shaft rod is located in the accommodating hole, the fixed shaft rod is provided with an axial hole, the side surface of the fixed shaft rod is provided with two telescopic holes, each telescopic hole is provided with a sliding tensioning block, the locking pressure rod is slidably arranged in the axial hole of the fixed shaft rod, a locking pressure rod is provided in the fixed shaft rod, the lower end of the locking pressure rod is provided with a driving cone block that is thicker at the top and thinner at the bottom, the surface of the driving cone block is provided with two driving slide grooves, and the driving cone block is provided with a sliding card block, and the two sliding card blocks are slidably carded in the driving slide groove;

[0008] The locking and fixing assembly includes a lifting drive member and a compression plate. A plurality of positioning rods are provided at the bottom of the compression plate. A plurality of second pressure sensors are provided on the positioning rods. The positioning rods are used to be inserted into the fixing holes of the shock absorber to be tested.

[0009] Furthermore, the ship electric shock absorber testing device also includes a display electrically connected to a test processor, and the test processor is connected to all the first pressure sensors and all the second pressure sensors.

[0010] Furthermore, the upper surface of the test disc is provided with a plurality of positioning drive protrusions, and the lower surface of the compression disc is provided with a plurality of positioning drive grooves cooperating with the positioning drive protrusions. The positioning drive protrusions are arc-shaped protrusions with a high middle portion and low sides.

[0011] Furthermore, a first elastic member is provided in the axial hole, a limiting ring and a limiting rod are provided at the bottom of the driving cone block, the upper end of the first elastic member is sleeved on the outside of the limiting rod, and the upper end of the first elastic member is against the limiting ring, and the lower end of the first elastic member is against the bottom of the axial hole.

[0012] Furthermore, a plurality of telescopic sleeves are provided in the compression plate, and each positioning rod is slidably provided in a telescopic sleeve. A second elastic member is also provided in each telescopic sleeve, and the two ends of the second elastic member respectively abut the bottom of the telescopic sleeve and the top of the positioning rod. The second pressure sensor is a pressure strain gauge, and the second pressure sensor is attached to the outer wall of the positioning rod.

[0013] Furthermore, a compression rotating sleeve is provided at the bottom of the compression disc, the inner wall of the compression rotating sleeve is coated with a graphite sliding layer, and the compression rotating sleeve is used to sleeve and press down the top of the locking pressure rod.

[0014] Furthermore, a plurality of elastic pressing holes are provided inside the test disk, each elastic pressing hole is provided with a third elastic member and an elastic pressure rod, the two ends of the third elastic member respectively abut the bottom of the elastic pressing hole and the end of the elastic pressure rod, and the second pressure sensor is fixed to the end of the elastic pressure rod located outside the elastic pressing hole.

[0015] Furthermore, a fixed mounting frame is provided on the test bench, the lifting drive member is a driving cylinder, the driving cylinder is vertically arranged, and the top of the compression plate is fixedly connected to the lower end of the driving cylinder.

[0016] Furthermore, an eccentric mass block is provided on the crankshaft rod, and the eccentric mass block is used to apply an eccentric load to the shock absorber to be tested when the crankshaft rod rotates.

[0017] The present invention also provides a method for testing a ship electric shock absorber, which uses any of the ship electric shock absorber testing devices described above and comprises the following steps:

[0018] S1: Positioning and installing the shock absorber to be tested into the test tray, with the second pressure sensor abutting against the outer surface of the shock absorber to be tested;

[0019] S2: Install the shock absorber to be tested and the test disc into the mounting base;

[0020] S3: Control the lifting drive member to drive the compression plate downward, and insert the positioning rods on the compression plate into the fixing holes of the shock absorber to be tested one by one, and the first pressure sensor is located between the inner wall of the fixing hole and the outer wall of the positioning rod;

[0021] The compression plate presses down the locking rod, which drives the driving cone block to move downward, so that the two sliding tensioning blocks extend from the two telescopic holes respectively, tensioning and locking the center sleeve of the shock absorber to be tested, so that the center sleeve of the shock absorber to be tested is tensioned and fixedly connected with the fixed shaft rod;

[0022] S4: Starting the driving motor to rotate the crankshaft, the first pressure sensor and the second pressure sensor sense the outer ring fluctuation curve and the shear pressure fluctuation curve of the shock absorber to be tested under the eccentric load of the crankshaft.

[0023] The beneficial effects of the ship electric shock absorber testing device and testing method of the present invention are as follows:

[0024] (1) When the ship electric shock absorber test device of the present invention tests the shock absorber, the crankshaft in the test box is fixedly connected to the center sleeve of the shock absorber, and the shock absorber is fixed in the test disk. The crankshaft can be rotated by the drive motor, so that the crankshaft drives the center sleeve of the shock absorber to rotate and applies an eccentric impact load to the shock absorber, thereby simulating the working condition of the shock absorber under the eccentric motion of the crankshaft of the ship electric system. The mounting hole and the outer ring of the shock absorber are respectively provided with a plurality of first pressure sensors and a plurality of second pressure sensors. The first pressure sensor can monitor the radial pressure fluctuation of the outer ring of the shock absorber and the test disk; the second pressure sensor detects the axial pressure change of the inner wall of the fixing hole and the positioning rod; the present invention realizes the synchronous analysis of the internal and external forces of the ship electric shock absorber through the first pressure sensor in the hole and the second pressure sensor on the outer ring, thereby accurately and comprehensively evaluating the dynamic buffering performance of the shock absorber to be tested, improving the test accuracy of the ship electric shock absorber, and providing a reliable basis for optimizing the shock absorber design.

[0025] (2) When the ship electric shock absorber test device of the present invention is in operation, the clamping plate can press down the shock absorber to be tested under the action of the lifting drive member, wherein the clamping plate can drive the locking pressure rod at the top of the fixed shaft, so that the locking pressure rod drives the driving cone block, so that the driving cone block can push the sliding tensioning block to move outward, and then fix the center sleeve to the crankshaft; and the positioning rods under the clamping plate can be inserted into the fixing holes of the shock absorber to be tested one by one, thereby fixing the outer ring of the shock absorber to be tested. The present invention can achieve the fixed installation of the center ring and outer ring of the shock absorber to be tested by only pressing down the clamping plate, thereby improving the clamping and testing efficiency of the shock absorber to be tested.

[0026] (3) When the ship electric shock absorber test device of the present invention is working, the shock absorber to be tested is installed in the test disk, and the elastic pressure rod on the inner wall of the test disk can press the first pressure sensor against the outer wall of the shock absorber, so that the shock absorber can be fixed while the first pressure sensor is pressed, and a positioning drive protrusion is provided on the test disk, and a positioning drive groove is provided on the lower surface of the pressing disk. The positioning plug rod at the lower part of the pressing disk is an elastic telescopic structure. When the pressing disk is pressed down, the positioning drive protrusion can automatically align with the positioning drive groove, so that the test disk that is misplaced within a certain range can be automatically rotated and positioned, and the positioning plug rod can be accurately inserted into the fixing hole of the shock absorber, thereby realizing automatic positioning of the test disk and the shock absorber during installation; the present invention can realize automatic rotation and positioning of the test disk and the shock absorber fixed on the test disk during the pressing process of the pressing disk, through the positioning drive groove on the test disk and the positioning drive groove at the lower part of the pressing disk, thereby effectively improving the installation accuracy and efficiency of the shock absorber test, and further improving the test accuracy of the ship electric shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1The figure is a schematic diagram of the overall structure of a ship electric shock absorber testing device according to an embodiment of the present invention.

[0028] Figure 2 yes Figure 1 Cross-section view at AA in the middle.

[0029] Figure 3 A schematic diagram of the installation structure of a shock absorber to be tested in a ship electrical shock absorber testing device according to an embodiment of the present invention.

[0030] Figure 4 yes Figure 3 Enlarged view of point B in the middle.

[0031] Figure 5 A schematic structural diagram of a tensioning and fixing assembly of a ship electric shock absorber testing device according to an embodiment of the present invention.

[0032] Figure 6 A schematic structural diagram of a drive cone block table of a tensioning and fixing assembly of a ship electric shock absorber testing device according to an embodiment of the present invention.

[0033] Figure 7 A cross-sectional view of a compression plate of a ship electric shock absorber testing device according to an embodiment of the present invention.

[0034] Figure 8 A flow chart of a method for installing and testing a ship electric shock absorber according to an embodiment of the present invention.

[0035] In the above figure: 100-test box, 101-test bench, 102-mounting seat, 200-crankshaft, 201-drive motor, 202-eccentric mass block; 300-fixed mounting frame, 301-drive cylinder, 400-test disc, 401-elastic pressing hole, 402-elastic pressure rod, 403-first pressure sensor, 404-guide ramp, 405-third elastic part, 406-positioning drive protrusion, 500-shock absorber to be tested, 501-center sleeve, 502-fixing hole, 600-fixed shaft, 601-axial hole, 602-locking pressure rod, 603-limiting cover, 604-driving cone block, 605-sliding tensioning block, 606-driving slide, 607-sliding card block, 608-first elastic part, 700 test processor, 701-display, 800-pressing disc, 801-positioning rod, 802-telescopic sleeve, 803-second pressure sensor, 804-second elastic part, 805-ball, 806-pressing rotating sleeve, 807-graphite sliding layer. DETAILED DESCRIPTION

[0036] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0037] Please refer to Figures 1 to 7The present invention discloses a shipboard shock absorber testing device for testing the shock absorption performance of a crankshaft isolation shock absorber 500. The testing device comprises a center sleeve 501 and an outer ring. The center sleeve 501 rotates relative to the outer ring, and the outer ring is provided with multiple fixing holes 502. The shipboard shock absorber testing device includes a test box 100, to which a test table 101 is fixed; a locking and fixing assembly is provided above the test box 100.

[0038] The test bench 101 is provided with a mounting base 102, and the mounting base 102 is a disc structure. The mounting base 102 is provided with a receiving groove of the disc structure, and a plurality of bottom holes are provided at the bottom of the receiving groove. The bottom holes can be aligned one by one with the fixing holes 502 on the shock absorber 500 to be tested. A receiving hole is provided in the middle of the mounting base 102 and passes through the mounting base 102. An annular test disc 400 is provided inside the mounting base 102, and the test disc 400 can be rotatably set in the receiving groove, and the test disc 400 can be quickly taken out; a plurality of first pressure sensors 403 are provided inside the test disc 400, and the shock absorber 500 to be tested is set in the test disc 400, and the outer wall of the shock absorber 500 to be tested abuts against the first pressure sensor 403.

[0039] A drive motor 201 and a crankshaft 200 are provided in the test box 100. The lower end of the crankshaft 200 is connected to the drive motor 201. The drive motor 201 is used to drive the crankshaft 200 to rotate. The crankshaft 200 is in a non-dynamically balanced state and will generate an eccentric impact load when it rotates. The upper end of the crankshaft 200 is fixedly connected to a tensioning and fixing assembly; the tensioning and fixing assembly is used to connect the center sleeve 501 of the shock absorber 500 to be tested, so that the crankshaft 200 can drive the center sleeve 501 of the shock absorber 500 to be tested to rotate synchronously.

[0040] Specifically, the tensioning and fixing assembly includes a fixed shaft rod 600, an axial hole 601 is provided in the fixed shaft rod 600, a limit cover 603 is provided at the upper end of the fixed shaft rod 600, two telescopic holes are provided on the side of the fixed shaft rod 600, and a sliding tensioning block 605 is slidably provided in each telescopic hole, the locking pressure rod 602 is slidably set in the axial hole 601 of the fixed shaft rod 600, a locking pressure rod 602 is provided in the fixed shaft rod 600, and a driving cone block 604 with a thick upper part and a thin lower part is provided at the lower end of the locking pressure rod 602, two driving slide grooves 606 are provided on the surface of the driving cone block 604, and the bottom of the driving slide groove 606 is a slope structure, and a sliding block 607 is provided on the driving cone block 604, and the two sliding blocks 607 are slidably carded in the driving slide groove 606.

[0041] A first elastic member 608 is also disposed within the axial hole 601. A retaining ring and a retaining rod are disposed at the bottom of the driving cone 604. The upper end of the first elastic member 608 is sleeved over the retaining rod, with the upper end of the first elastic member 608 abutting the retaining ring, while the lower end of the first elastic member 608 abuts the bottom of the axial hole 601. In this embodiment, the elastic member is a compressed coil spring, and a retaining cap 603 prevents the locking rod 602 from popping out of the axial hole 601 of the fixed shaft 600.

[0042] As can be understood, in the initial state, the first elastic member 608 elevates the drive cone 604 to its highest position through elastic force, at which point the sliding tension block 605 is fully retracted into the telescopic hole. The outer diameter of the fixed shaft 600 is smaller than the inner diameter of the center sleeve 501 of the shock absorber 500 to be tested, allowing the center sleeve 501 of the shock absorber 500 to be easily inserted into the fixed shaft 600. At this point, the locking rod 602 is pressed downward, overcoming the elastic force of the first elastic member 608 and driving the drive cone 604 downward. The inclined surface structure pushed by the drive cone 604 pushes the sliding tension block 605 outward to abut against the inner wall of the center sleeve 501 of the shock absorber 500 to be tested, thereby securing the center sleeve 501 of the shock absorber 500 to the upper end of the crankshaft 200. In this embodiment, the outer wall of the sliding tensioning block 605 is provided with a friction layer (the friction layer is not shown in the figure) to increase friction. The friction layer ensures that the center sleeve 501 is fixed relative to the upper end of the crankshaft rod 200.

[0043] The locking and fixing assembly includes a lifting drive and a compression plate 800. The compression plate 800 is located directly above the mounting seat 102. A plurality of positioning rods 801 are provided at the bottom of the compression plate 800. A plurality of second pressure sensors 803 are fixed on the outer wall of the positioning rods 801. The positioning rods 801 are used to be inserted into the fixing holes 502 of the shock absorber 500 to be tested. Specifically, the positioning rods 801 at the bottom of the compression plate 800 correspond one-to-one to the fixing holes 502 on the outer ring of the shock absorber 500 to be tested.

[0044] After the shock absorber 500 to be tested is positioned in the mounting plate 400, the lifting drive member can drive the pressing plate 800 to press down, and all the positioning rods 801 are respectively inserted into the corresponding fixing holes 502, and the lower ends of the positioning rods 801 are also inserted into the bottom holes of the mounting seat 102. At the same time, the pressing plate 800 can also press down the locking rod 602 to fix the center sleeve 501 of the shock absorber 500 to be tested relative to the upper end of the crankshaft rod 200. In this way, only the lifting drive member needs to control the pressing plate 800 to press down, which can not only complete the adaptive locking of the center sleeve of the shock absorber 500 to be tested and the tensioning and fixing assembly, but also complete the fixing of the positioning rods 801 to the fixing holes of the shock absorber 500 to be tested, thereby completing the rapid and automatic positioning and installation of the shock absorber 500 to be tested. Then start the drive motor 201 to test the shock absorber 500 to be tested. During the test, the first pressure sensor 403 can monitor the radial pressure fluctuations of the outer ring of the shock absorber 500 and the test disk 400; the second pressure sensor 803 detects the axial pressure changes of the inner wall of the fixing hole 502 and the positioning rod 801. The present invention realizes the synchronous analysis of the internal and external forces of the ship electric shock absorber through the second pressure sensor 803 in the hole and the first pressure sensor 403 on the outer ring, so as to accurately and comprehensively evaluate the dynamic buffering performance of the shock absorber 500 to be tested, improve the test accuracy of the ship electric shock absorber, and provide a reliable basis for optimizing the shock absorber design.

[0045] In a preferred embodiment, a ship electric shock absorber testing device of the present invention further includes a detection and display assembly, which includes a test processor 700 and a display 701. The test processor 700 and the display 701 are electrically connected to each other and are connected to all first pressure sensors 403 and all second pressure sensors 803. The test processor 700 obtains the pressure values ​​sensed by all pressure sensors, integrates them, and outputs a fluctuation curve, which is displayed in real time on the display 701. The fluctuation curve includes a shear pressure fluctuation curve under eccentric load of the crankshaft rod 200 sensed by the second pressure sensor 803 and a fluctuation curve of the outer ring of the shock absorber 500 under eccentric load of the crankshaft rod 200 sensed by the first pressure sensor 403. This fluctuation curve can fully reflect the performance of the shock absorber 500. The detection and display assembly of the electric shock absorber testing device of the present invention can intuitively reflect the shock absorption performance of the shock absorber 500 under dynamic load.

[0046] In a preferred embodiment, the upper surface of the test disc 400 is provided with a plurality of positioning drive protrusions 406 , which are evenly spaced around the axis of the test disc 400 . The positioning drive protrusions 406 are arc-shaped protrusions, with a higher center portion and lower arc-shaped protrusions on either side, thereby forming two inclined surfaces on the upper surface of the positioning drive protrusions 406 . The lower surface of the pressure disc 800 is provided with a plurality of positioning drive grooves (not shown) that cooperate with the positioning drive protrusions 406 . The test disc 400 is rotatably mounted within the mounting base 102 .

[0047] In the present invention, when the compression disc 800 is pressed down and there is a certain angle of misalignment error between the test disc 400 and the compression disc 800, the inclined surface cooperation structure of the positioning drive protrusion 406 and the positioning drive groove can drive the test disc 400 to rotate a certain angle, thereby achieving automatic alignment of the test disc 400 and the compression disc 800 during the process of the compression disc 800 pressing down the test disc 400. In this way, not only can the positioning rod 801 be automatically and quickly installed in the fixing hole by pressing down the compression disc 800, but the automatic adaptation connection of the crankshaft can also be quickly achieved by pressing down, so that the positioning rod 801 can be quickly positioned and installed and the crankshaft can be automatically adapted by only pressing down. This can reduce the positioning accuracy requirements of the staff when installing the test disc 400 and improve the installation efficiency of the test disc 400.

[0048] The clamping plate 800 is further provided with a plurality of telescopic sleeves 802, and each positioning rod 801 is slidably provided in a telescopic sleeve 802. A second elastic member 804 is further provided in each telescopic sleeve 802, and the two ends of the second elastic member 804 respectively abut against the bottom of the telescopic sleeve 802 and the top of the positioning rod 801. The second elastic member 804 is an elastic member in a compressed state, and the second pressure sensor 803 is a pressure strain gauge. The second pressure sensor 803 is attached to the outer wall of the positioning rod 801, and a ball bearing 805 structure is further provided at the bottom of the positioning rod 801.

[0049] When the compression plate 800 presses down on the test plate 400, if the positioning rod 801 is not initially aligned with the fixing hole 502, the positioning rod 801 will retract into the telescopic sleeve 802. When the compression plate 800 drives the test plate 400 to rotate and position, the positioning rod 801 and the fixing hole 502 are aligned one by one. At this time, the positioning rod 801 pops out and inserts into the fixing hole 502. The ball bearing 805 structure at the bottom of the positioning rod 801 can reduce the resistance between the test plate 400 and the lower end of the positioning rod 801 when the test plate 400 rotates.

[0050] In a preferred embodiment, a clamping rotating sleeve 806 is provided at the bottom of the clamping disc 800, and the clamping rotating sleeve 806 is located directly above the locking pressure rod 602. The clamping rotating sleeve 806 is embedded in the bottom of the clamping disc 800, and the inner wall of the clamping rotating sleeve 806 is coated with a graphite sliding layer 807. When the clamping disc 800 presses down the locking pressure rod 602, the clamping rotating sleeve 806 is pressed and sleeved on the top of the locking pressure rod 602. The graphite sliding layer 807 can reduce the friction between the clamping disc 800 and the locking pressure rod 602, ensuring that the clamping effect of the clamping disc 800 on the locking pressure rod 602 will not affect the rotation of the locking pressure rod 602 and the locking fixing assembly.

[0051] In a preferred embodiment, the inner wall of the test disc 400 is provided with a plurality of elastic pressing holes 401, each elastic pressing hole 401 is provided with a third elastic member 405 and an elastic pressure rod 402, the third elastic member 405 is a coil spring in a compressed state, the two ends of the third elastic member 405 respectively abut the bottom of the elastic pressing hole 401 and the end of the elastic pressure rod 402, the first pressure sensor 403 is fixed to the end of the elastic pressure rod 402 outside the elastic pressing hole 401, and the end of the elastic pressure rod 402 outside the elastic pressing hole 401 is also provided with a guide slope 404, when the shock absorber 500 to be tested is mounted on the test disc 400, the staff axially positions the shock absorber 500 to be tested and the test disk 400, and then presses down the shock absorber 500 to be tested. The outer ring of the shock absorber 500 to be tested presses down the guide slope 404 at the end of the elastic pressure rod 402 to retract the third elastic member 405. After the shock absorber 500 to be tested completely enters the test disk 400, the elastic force of the third elastic member 405 presses the elastic pressure rod 402 to the outer wall of the shock absorber 500 to be tested, thereby fixing the shock absorber 500 to be tested and the test disk 400 relatively, and the first pressure sensor 403 at the end of the elastic pressure rod 402 is abutted against the outer wall of the shock absorber 500 to be tested.

[0052] In a preferred embodiment, a fixed mounting frame 300 is provided on the test bench 101, and the lifting drive component is a driving cylinder 301. The driving cylinder 301 is vertically arranged on the fixed mounting frame 300, and the top of the compression plate 800 is fixedly connected to the lower end of the driving cylinder 301. The driving cylinder 301 is used to drive the compression plate 800 to rise and fall.

[0053] In a preferred embodiment, the crankshaft 200 is provided with an eccentric mass 202. The crankshaft 200 is provided with a plurality of eccentric mass holes, into which the eccentric mass 202 is threadably secured. The eccentric mass 202 structure can apply an eccentric load to the shock absorber 500 under test when the crankshaft 200 rotates. By installing eccentric masses 202 of varying mass or quantity, the magnitude of the eccentric load during rotation of the crankshaft 200 can be adjusted.

[0054] The present invention also provides a method for testing a ship electric shock absorber, which uses the above-mentioned ship electric shock absorber testing device and includes the following steps:

[0055] S1: Position and install the shock absorber 500 to be tested into the test disk 400, with the first pressure sensor 403 abutting the outer side surface of the shock absorber 500 to be tested; when the shock absorber 500 to be tested is installed into the test disk 400, manually adjust the circumferential angle of the shock absorber 500 to be tested relative to the test disk 400 to ensure that the shock absorber 500 to be tested is accurately positioned circumferentially relative to the test disk 400.

[0056] S2: Install the shock absorber 500 to be tested and the test disc 400 into the mounting base 102;

[0057] S3: Control the lifting drive member to drive the compression plate 800 downward, and insert the positioning rods 801 on the compression plate 800 into the fixing holes 502 of the shock absorber 500 to be tested one by one. The second pressure sensor 803 is located between the inner wall of the fixing hole 502 and the outer wall of the positioning rod 801;

[0058] The compression plate 800 presses down the locking rod 602, which drives the driving cone 604 downward, causing the two sliding tensioning blocks 605 to extend from the two telescopic holes, respectively, to tension and lock the center sleeve 501 of the shock absorber 500 to be tested, so that the center sleeve 501 of the shock absorber 500 to be tested is tensioned and fixedly connected to the fixed shaft 600;

[0059] S4: Start the driving motor 201 to drive the crankshaft 200 to rotate, and the first pressure sensor 403 and the second pressure sensor 803 sense the outer ring fluctuation curve and the shear pressure fluctuation curve of the shock absorber 500 to be tested under the eccentric load of the crankshaft 200.

[0060] In this document, directional terms such as front, back, top, and bottom are defined based on the positions of components in the accompanying drawings and relative to each other, and are intended only for clarity and convenience in describing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application.

[0061] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A ship electric shock absorber testing device, characterized by: The test box (100) comprises a test box (100), on which a test table (101) is fixed; and a locking and fixing assembly is provided above the test box (100); The test bench (101) is provided with a mounting seat (102), a receiving hole penetrating the mounting seat (102) is provided in the middle of the mounting seat (102), and an annular test disc (400) is provided in the mounting seat (102); a plurality of first pressure sensors (403) are provided inside the test disc (400), a shock absorber (500) to be tested is arranged in the test disc (400), and an outer wall of the shock absorber (500) to be tested abuts against the first pressure sensors (403); A driving motor (201) and a crankshaft rod (200) are provided in the test box (100), wherein the lower end of the crankshaft rod (200) is connected to the driving motor (201), and the upper end of the crankshaft rod (200) is fixedly connected to a tensioning and fixing assembly; The tensioning and fixing assembly includes a fixed shaft (600), the fixed shaft (600) is located in the accommodating hole, an axial hole (601) is provided in the fixed shaft (600), two telescopic holes are provided on the side of the fixed shaft (600), a sliding tensioning block (605) is slidably provided in each telescopic hole, a locking pressure rod (602) is provided in the fixed shaft (600), the locking pressure rod (602) is slidably set in the axial hole (601) of the fixed shaft (600), a driving cone block (604) with a thick upper part and a thin lower part is provided at the lower end of the locking pressure rod (602), two driving grooves (606) are provided on the surface of the driving cone block (604), a sliding block (607) is provided on the driving cone block (604), and the two sliding blocks (607) are slidably clamped in the driving groove (606); The locking and fixing assembly comprises a lifting drive member and a compression plate (800), wherein a plurality of positioning rods (801) are provided at the bottom of the compression plate (800), and a plurality of second pressure sensors (803) are provided on the positioning rods (801), and the positioning rods (801) are used to be inserted into the fixing holes (502) of the shock absorber (500) to be tested.

2. A ship electric shock absorber testing device according to claim 1, characterized in that: The ship electric shock absorber test device further comprises a display (701) electrically connected to a test processor (700), wherein the test processor (700) is connected to all first pressure sensors (403) and all second pressure sensors (803).

3. A ship electric shock absorber testing device according to claim 1, characterized in that: The upper surface of the test disc (400) is provided with a plurality of positioning drive protrusions (406), and the lower surface of the compression disc (800) is provided with a plurality of positioning drive grooves that cooperate with the positioning drive protrusions (406). The positioning drive protrusions (406) are arc-shaped protrusions with a high middle portion and low sides.

4. A ship electric shock absorber testing device according to claim 1, characterized in that: A first elastic member (608) is further provided in the axial hole (601), and a limiting ring and a limiting rod are provided at the bottom of the driving cone block (604). The upper end of the first elastic member (608) is sleeved outside the limiting rod, and the upper end of the first elastic member (608) abuts against the limiting ring, and the lower end of the first elastic member (608) abuts against the bottom of the axial hole (601).

5. The ship electric shock absorber testing device according to claim 1, characterized in that: A plurality of telescopic sleeves (802) are further provided in the compression plate (800), and each positioning rod (801) is slidably provided in a telescopic sleeve (802). A second elastic member (804) is further provided in each telescopic sleeve (802), and two ends of the second elastic member (804) respectively abut against the bottom of the telescopic sleeve (802) and the top of the positioning rod (801). The second pressure sensor (803) is a pressure strain gauge, and the second pressure sensor (803) is attached to the outer wall of the positioning rod (801).

6. A ship electric shock absorber testing device according to claim 5, characterized in that: A pressing rotating sleeve (806) is provided at the bottom of the pressing disc (800), and the inner wall of the pressing rotating sleeve (806) is coated with a graphite sliding layer (807). The pressing rotating sleeve (806) is used to sleeve and press down the top of the locking pressure rod (602).

7. The ship electric shock absorber testing device according to claim 1, characterized in that: The test disc (400) is provided with a plurality of elastic pressing holes (401) inside, and each elastic pressing hole (401) is provided with a third elastic member (405) and an elastic pressure rod (402), and the two ends of the third elastic member (405) respectively abut against the bottom of the elastic pressing hole (401) and the end of the elastic pressure rod (402), and the first pressure sensor (403) is fixed to the end of the elastic pressure rod (402) located outside the elastic pressing hole (401).

8. The ship electric shock absorber testing device according to claim 1, characterized in that: The test bench (101) is provided with a fixed mounting frame (300), the lifting drive member is a driving cylinder (301), the driving cylinder (301) is vertically arranged, and the top of the pressing plate (800) is fixedly connected to the lower end of the driving cylinder (301).

9. The ship electric shock absorber testing device according to claim 1, characterized in that: An eccentric mass block (202) is provided on the crankshaft rod (200), and the eccentric mass block (202) is used to apply an eccentric load to the shock absorber (500) to be tested when the crankshaft rod (200) rotates.

10. A method for testing a ship electric shock absorber, characterized in that: The testing method uses the ship electric shock absorber testing device according to any one of claims 1 to 9, and the testing method comprises the following steps: S1: The shock absorber (500) to be tested is positioned and installed in the test plate (400), and the first pressure sensor (403) is in contact with the outer side surface of the shock absorber (500) to be tested; S2: Installing the shock absorber (500) to be tested and the test disc (400) into the mounting seat (102); S3: Controlling the lifting drive member to drive the compression plate (800) downward, the positioning rods (801) on the compression plate (800) are inserted one by one into the fixing holes (502) of the shock absorber (500) to be tested, and the second pressure sensor (803) is located between the inner wall of the fixing hole (502) and the outer wall of the positioning rod (801); The compression plate (800) presses down the locking pressure rod (602), and the locking pressure rod (602) drives the driving cone block (604) to move downward, so that the two sliding tensioning blocks (605) extend from the two telescopic holes respectively, tensioning and locking the center sleeve (501) of the shock absorber (500) to be tested, so that the center sleeve (501) of the shock absorber (500) to be tested is tensioned and fixedly connected with the fixed shaft (600); S4: The driving motor (201) is started to drive the crankshaft (200) to rotate, and the first pressure sensor (403) and the second pressure sensor (803) sense the outer ring fluctuation curve and the shear pressure fluctuation curve of the shock absorber (500) to be tested under the eccentric load of the crankshaft (200).

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