A torsional vibration test device and method for a shaft generator for a container ship

Abstract

The present invention discloses a torsional vibration test device and method for a shaft generator for a container ship, specifically relates to the technical field of torsional vibration testing, including a test bench, a simulation motor is installed on one side of the upper surface of the test bench, a torque sensor is installed concentrically at the output end of the simulation motor, a load mechanism is installed on the other side of the upper surface of the test bench, and a replacement seat is added to the upper surface of the test bench. The present invention provides different physical quantities for torsional vibration testing by switching two shafting mechanisms, which is beneficial to the improvement and upgrading of the shafting mechanism and reduces the interference of torsional vibration. At the same time, the locking mechanism provides a flexible propulsion force via a driving mechanism, so that after the shafting mechanism reaches a predetermined position, the locking mechanism is driven to move to complete multiple locking of the shafting mechanism, so that the shafting mechanism obtains a stable test state, and after the shafting mechanism moves out of the predetermined position, the locking mechanism is unlocked, which is beneficial for the staff to complete active replacement of the shafting mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of torsional vibration testing, and in particular to a torsional vibration testing device and method for a shaft generator for a container ship. Background Art

[0002] The torsional vibration of the rotating shaft system is a special vibration form. Since the rotating shaft system is not an absolute rigid body, it has elasticity, and the hardness of the rotating shaft system determines the frequency of the torsional vibration. Therefore, during the rotation process, the elastic components will produce instantaneous speed fluctuations of different sizes and phases due to various reasons, forming a back-and-forth torsion along the rotation direction.

[0003] This torsional vibration will cause tangential alternating torsional stress inside the material. If the torsional amplitude is too large and the shear stress exceeds the elastic limit, fatigue will accumulate in the material. When the fatigue accumulates to a certain extent, cracks will appear on the rotating shaft. Further development of the cracks will cause the material to break. Such accidents are common in large-scale steel rolling equipment, large steam turbine generators, large ships, locomotives, etc. Therefore, it is necessary to perform torsional vibration tests on the rotating shaft system of the generator to ensure the subsequent stable operation of the shaft-belt generator.

[0004] A ship shaft torsional vibration test device is disclosed in a patent application with reference publication number CN109297660B. The test device adjusts the distance between the two clamping assemblies through a motor, so that the upper pressure plates of the upper clamping structure and the lower clamping structure move toward the shaft system to be tested, thereby completing the fixation of the shaft system. When the shaft system to be tested is subsequently driven to rotate by a belt, the shaft system to be tested drives the inner sleeve to rotate in the outer sleeve, thereby completing the test work.

[0005] The above-mentioned test device can well complete the support and fixation of the shaft system through two clamping assemblies, which is conducive to the subsequent torsional vibration test. However, the test device has great limitations in the test. It cannot quickly switch the rotating shaft system of different hardness for testing according to the test requirements, and cannot know the interference status of different physical quantities on the torsional vibration frequency, which makes the test work relatively single, which is not conducive to the comprehensive implementation of the torsional vibration test, affects the test accuracy, and is not conducive to the selection, improvement and upgrading of the rotating shaft system of the generator, which makes the subsequent equipment operation have a greater safety risk. Summary of the invention

[0006] The object of the present invention is to provide a torsional vibration testing device and method for a shaft generator for a container ship, so as to solve the above technical problems.

[0007] To solve the above technical problems, the present invention is implemented through the following technical solutions.

[0008] The present invention is a torsional vibration test device for a shaft-belt generator for a container ship, comprising a test bench, a simulation motor is installed on one side of the upper surface of the test bench, a torque sensor is installed concentrically at the output end of the simulation motor, a load mechanism is installed on the other side of the upper surface of the test bench, and a replacement seat is added to the upper surface of the test bench, two shaft system mechanisms are installed in combination on the replacement seat, and a driving mechanism is penetrated on the replacement seat, the driving mechanism is used to reciprocate the two shaft system mechanisms to the middle position of the replacement seat, the two shaft system mechanisms are flexibly pushed and the position replacement operation is completed through the driving mechanism, the two shaft system mechanisms are respectively connected to the torque sensor and the load mechanism to complete the test action, and locking mechanisms are installed on the two shaft system mechanisms, the two locking mechanisms complete the linkage cooperation with the two shaft system mechanisms, and the respective locking operations of the two shaft system mechanisms are completed through the two locking mechanisms.

[0009] Furthermore, two slideways are symmetrically recessed on both sides of the replacement seat, and a walking board is installed on one side of the replacement seat, and a trapezoidal platform is protruded upwards at the middle position of the upper surface of the walking board.

[0010] Furthermore, the load mechanism includes two symmetrically arranged slide rails, a slide seat is slidably engaged on the two slide rails, a three-dimensional adjustment table is installed on the upper surface of the slide seat, and an assembly seat is detachably installed on the three-dimensional adjustment table, a load generator is installed on the assembly seat, and a No. 1 cylinder is installed on the surface of the test bench, and the output end of the No. 1 cylinder is transmission-connected to one side of the slide seat.

[0011] Furthermore, the two shaft system mechanisms each include a sliding table that is slidably engaged in the slideway, a locking seat is integrally installed on the top of the sliding table, a mounting plate is slidably engaged in the locking seat, two parallel frames are symmetrically installed on the upper surface of the mounting plate, and a positioning screw is installed on the edge of one side of the mounting plate through threaded engagement, a shaft system body is rotatably passed through the two parallel frames, and refueling pipes are connected and passed through the tops of the two parallel frames, and both ends of the shaft system body are respectively connected to the torque sensor and the load generator through couplings.

[0012] Furthermore, the driving mechanism includes a push arm that is slidably inserted through the center of the replacement seat, and the push arm is arranged corresponding to the sliding table that slides through the two shaft system mechanisms, and a No. 2 cylinder is installed on one side of the replacement seat through a bracket, and the output end of the No. 2 cylinder is detachably fixedly connected to one end of the push arm, and two flexible parts are symmetrically arranged at both ends of the push arm, and the two flexible parts are respectively arranged corresponding to the sliding tables of the two shaft system mechanisms, and the intermittent propulsion action of the push arm is completed by the flexible parts.

[0013] Furthermore, the two flexible parts each include a No. 1 baffle ring which is detachably fixedly mounted on the push arm, and a No. 2 baffle ring is detachably fixedly mounted on the side of the sliding platform close to the No. 1 baffle ring. The No. 2 baffle ring is slidably mounted on the push arm, and a flexible spring is installed between the No. 1 baffle ring and the No. 2 baffle ring. The flexible spring is correspondingly mounted on the outside of the push arm, and power is intermittently transmitted to the sliding platform through the flexible spring to complete the propulsion action.

[0014] Furthermore, the two locking mechanisms each include two moving areas symmetrically opened on the sliding table, a No. 1 area is opened at the bottom of the two moving areas and connected to the sliding table, and a No. 2 area is opened at the top of the two moving areas and connected to the sliding table, plug-ins are slidably installed in the two moving areas, an inclined surface is provided on the side of the plug-in close to the push arm, and a No. 1 wedge block is installed in the two moving areas on both sides of the push arm, the No. 1 wedge block is in sliding contact with the inclined surface, and the bottom of the plug-in extends correspondingly into the No. 1 area, two return springs are installed in the No. 1 area, the two return springs are connected to one side of the plug-in, and slots are symmetrically opened on the sides close to each other in the two slides, and the two slots are respectively cooperated with the two plug-ins.

[0015] Furthermore, a rack is recessed inwardly at the top of the plug-in, and a gear is rotatably installed in the No. 2 zone through a bracket, the gear is meshed with the rack, an eccentric cam is removably fixedly installed on one side of the gear, and a gravity pin is slidably penetrated through the top of the No. 2 zone, the gravity pin is normally hidden in the No. 2 zone, and a positioning groove cooperating with the gravity pin is opened at the bottom of the mounting plate.

[0016] Furthermore, a No. 1 plate is installed on one side of the two engaging seats, and a lifting arm is slidably penetrated on the No. 1 plate. A No. 2 plate is slidably engaged with the side wall of the engaging seat below the No. 1 plate. The No. 2 plate is fixedly sleeved on the outside of the lifting arm, and a walking wheel is rotatably installed at the bottom of the lifting arm, and the walking wheel contacts the walking plate and the trapezoidal platform. A deformation spring is installed between the No. 1 plate and the No. 2 plate, and an extrusion chamber is installed on one side of the engaging seat, and a piston is slidably installed in the extrusion chamber, and a piston rod is concentrically installed on the top of the piston, and the top of the piston rod is detachably fixedly connected to the top of the lifting arm, and a No. 1 inlet pipe and a No. 2 inlet pipe are respectively connected and installed on the top and bottom of one side of the extrusion chamber, and a No. 1 outlet pipe and a No. 2 outlet pipe are respectively connected and installed on the top and bottom of the other side of the extrusion chamber, and the No. 1 outlet pipe is connected to the refueling pipes on the two parallel frames through a pipeline.

[0017] The present invention also provides a torsional vibration test method for a shaft generator for a container ship, and the test method specifically comprises the following steps:

[0018] Step 1: First, assemble the two shaft system mechanisms on the replacement seat accordingly, and then push one of the shaft system mechanisms to a predetermined position on the replacement seat through a driving mechanism;

[0019] Step 2: Then connect the two ends of the shaft system mechanism to the torque sensor and the load mechanism respectively, and then drive the shaft system mechanism and the load mechanism to rotate through the simulated motor to perform torsional vibration testing;

[0020] Step 3: After the measurement is completed, another shaft system mechanism is switched through the driving mechanism to connect with the torque sensor and the load mechanism, and different physical quantities are provided by switching the two shaft system mechanisms to perform torsional vibration testing;

[0021] Step 4: By providing a locking mechanism, after the shaft system mechanism reaches a predetermined position, the locking mechanism is driven to operate to complete multiple locking of the shaft system mechanism.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention is provided with a shaft system mechanism, and both ends of the shaft system mechanism are connected to the torque sensor and the load mechanism through a coupling. Subsequently, the shaft system mechanism and the load mechanism are driven by a simulated motor to rotate to perform a torsional vibration test. After the measurement is completed, another shaft system mechanism is switched to connect with the torque sensor and the load mechanism through the driving mechanism. The switching of the two shaft system mechanisms provides different physical quantities for torsional vibration testing, which is beneficial to the improvement and upgrading of the shaft system mechanism and reduces the interference of torsional vibration.

[0024] 2. The present invention is provided with a locking mechanism, which is installed on the shafting mechanism. The locking mechanism provides a flexible propulsion force through a driving mechanism, so that after the shafting mechanism reaches a predetermined position, the locking mechanism is driven to operate to complete multiple locking of the shafting mechanism, so that the shafting mechanism obtains a stable test state, and after the shafting mechanism moves out of the predetermined position, the locking mechanism is unlocked, which is beneficial for the staff to complete active replacement of the shafting mechanism;

[0025] 3. In the present invention, since an extrusion chamber is installed on one side of the engaging seat, the walking wheel moves upward under the guidance of the trapezoidal platform, driving the No. 2 plate and the lifting arm to move upward, and the lubricating oil above the piston in the extrusion chamber is sent into the filling pipe through the No. 1 outlet pipe. Then the technician rotates the shaft system body so that the lubricating oil fills the rotating connection between the shaft system body and the parallel frame, reducing the resistance of the subsequent test of the shaft system body. Therefore, when the shaft system body completes a single switch, a lubrication process is completed for the shaft system body and the sliding table.

[0026] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is the overall front view of the present invention;

[0028] Figure 2 It is a schematic diagram of the distribution of the load mechanism and the shaft system mechanism of the present invention;

[0029] Figure 3 is a schematic diagram of a load mechanism of the present invention;

[0030] Figure 4 It is a schematic diagram of installing two shaft system mechanisms of the present invention on a replacement seat;

[0031] Figure 5 It is a schematic diagram of the separation of the shaft system mechanism and the replacement seat of the present invention;

[0032] Figure 6 It is a schematic diagram of the driving mechanism of the present invention;

[0033] Figure 7 It is a schematic diagram of the separation of the mounting plate and the engaging seat of the present invention;

[0034] Figure 8 It is a schematic diagram of the distribution of the shaft system mechanism and the driving mechanism of the present invention;

[0035] Fig. 9 It is a schematic diagram of the locking mechanism of the present invention;

[0036] Fig.10 It is a schematic diagram of the meshing of the gear and the rack of the present invention;

[0037] Fig.11 It is a schematic diagram of installing the locking mechanism of the present invention on a sliding table;

[0038] Fig.12 It is a schematic diagram of installing the extrusion chamber of the present invention on the engaging seat;

[0039] Fig.13 It is a schematic diagram of the contact between the second wedge block and the third wedge block of the present invention;

[0040] Fig.14 It is a schematic diagram of the interior of the extrusion chamber of the present invention.

[0041] In the figure: 1. test bench; 2. simulation motor; 3. torque sensor; 4. replacement seat; 5. slideway; 6. walking board; 7. trapezoidal table; 8. slide rail; 9. slide seat; 10. three-dimensional adjustment table; 11. assembly seat; 12. load generator; 13. No. 1 cylinder; 14. sliding table; 15. snap seat; 16. mounting plate; 17. parallel frame; 18. positioning screw; 19. shaft system body; 20. oil filling pipe; 21. push arm; 22. No. 2 cylinder; 23. flexible part; 231. No. 1 retaining ring; 232. No. 2 retaining ring; 233. flexible spring; 24. shift moving area; 25, area No. 1; 26, area No. 2; 27, plug-in; 28, inclined surface; 29, wedge block No. 1; 30, return spring; 31, slot; 32, rack; 33, gear; 34, eccentric cam; 35, gravity pin; 36, positioning groove; 37, plate No. 1; 38, lifting arm; 39, plate No. 2; 40, walking wheel; 41, deformation spring; 42, extrusion chamber; 43, piston; 44, piston rod; 45, inlet pipe No. 1; 46, inlet pipe No. 2; 47, outlet pipe No. 1; 48, outlet pipe No. 2; 49, wedge block No. 2; 50, wedge block No. 3. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0043] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0044] Embodiment 1: The present invention provides a technical solution: Figures 1 to 14As shown, a torsional vibration test equipment for a shaft-belt generator for a container ship comprises a test bench 1, a control console is installed on one side of the upper surface of the test bench 1, the control console is used to establish a connection between a simulated motor 2, a torque sensor 3, a load mechanism and a drive mechanism, so as to facilitate subsequent operation control, a simulated motor 2 is installed on one side of the upper surface of the test bench 1 through a motor seat, a torque sensor 3 is concentrically installed at the output end of the simulated motor 2, a load mechanism is installed on the other side of the upper surface of the test bench 1, and a replacement seat 4 is added to the upper surface of the test bench 1, two shaft system mechanisms are combined and installed on the replacement seat 4, and a drive mechanism is passed through the replacement seat 4, the drive mechanism is used to The two shaft systems are reciprocated to the middle position of the replacement seat 4, and the two shaft systems are flexibly pushed by the driving mechanism to complete the position replacement operation. The two shaft systems are respectively connected to the torque sensor 3 and the load mechanism to complete the test action, and locking mechanisms are installed on the two shaft systems. The two locking mechanisms complete the linkage cooperation with the two shaft systems, and the respective locking operations of the two shaft systems are completed by the two locking mechanisms. Two slideways 5 are symmetrically recessed on both sides of the replacement seat 4, and the tails of the two slideways 5 are both set through the replacement seat 4, and a walking plate 6 is installed on one side of the replacement seat 4, and a trapezoidal platform 7 is protruded upward at the middle position of the upper surface of the walking plate 6;

[0045] Wherein, the load mechanism includes two symmetrically arranged slide rails 8, a slide seat 9 is slidably engaged on the two slide rails 8, a three-dimensional adjustment table 10 is installed on the upper surface of the slide seat 9, and the three-dimensional adjustment table 10 is composed of an X-axis manual slide, a Y-axis manual slide and a Z-axis manual slide. The Y-axis manual slide is installed at the output end of the X-axis manual slide, and the Z-axis manual slide is installed at the output end of the Y-axis manual slide. The X-axis manual slide, the Y-axis manual slide and the Z-axis manual slide are used to complete the adjustment of the load generator 12 in the X, Y and Z axial directions, and an assembly seat 11 is detachably installed on the three-dimensional adjustment table 10, and a load generator 12 is installed on the assembly seat 11. A No. 1 cylinder 13 is installed on the upper surface of the test bench 1, and the output end of the No. 1 cylinder 13 is transmission-connected to one side of the slide seat 9;

[0046] In the embodiment of the present invention, a No. 1 plate 37 is installed on one side of the two engaging seats 15, a lifting arm 38 is slidably penetrated on the No. 1 plate 37, a limiting ring for limiting is installed on the top of the lifting arm 38, a No. 2 plate 39 is slidably engaged with the side wall of the engaging seat 15 below the No. 1 plate 37, a lifting area matched with the No. 2 plate 39 is opened on the side wall of the engaging seat 15, the No. 2 plate 39 is fixedly sleeved on the outside of the lifting arm 38, and a walking wheel 40 is rotatably installed at the bottom of the lifting arm 38, the walking wheel 40 is in contact with the walking plate 6 and the trapezoidal platform 7, and a lifting area matched with the No. 2 plate 39 is opened on the side wall of the engaging seat 15, the No. 2 plate 39 is fixedly sleeved on the outside of the lifting arm 38, and a walking wheel 40 is rotatably installed at the bottom of the lifting arm 38, and the walking wheel 40 is in contact with the walking plate 6 and the trapezoidal platform 7. A deformation spring 41 is installed between the No. 1 plate 37 and the No. 2 plate 39. The deformation spring 41 is sleeved on the outside of the lifting arm 38. An extrusion chamber 42 is installed on one side of the engaging seat 15 through a bracket. A top cover is removably sealed and installed on the top of the extrusion chamber 42 through bolts. A piston 43 is slidably installed in the extrusion chamber 42. A piston rod 44 is concentrically installed on the top of the piston 43. The top of the piston rod 44 is detachably fixedly connected to the top of the lifting arm 38. A No. 1 inlet pipe 45 and a No. 2 inlet pipe 46 are connected and installed on the top and bottom of one side of the extrusion chamber 42. A No. 1 one-way valve for introducing oil into the extrusion chamber 42 in one direction is installed at the ends of the No. 1 inlet pipe 45 and the No. 2 inlet pipe 46, respectively. A No. 1 outlet pipe 47 and a No. 2 outlet pipe 48 are connected to the top and the bottom of the other side of the extrusion chamber 42, respectively. A No. 2 one-way valve for leading oil out of the extrusion chamber 42 in one direction is installed at the ends of the No. 1 outlet pipe 47 and the No. 2 outlet pipe 48, respectively. The No. 1 outlet pipe 47 is connected to the refueling pipe 20 on the two parallel frames 17 through a pipeline. An oil tank is installed on one side of the engaging seat 15. The No. 1 inlet pipe 45 and the No. 2 inlet pipe 46 are connected to the oil tank through a pipeline. The second outlet pipe 48 extends to the sliding table 14 through the pipeline, and lubricating oil is provided for the sliding of the sliding table 14. A second wedge block 49 is installed on one side of the second plate 39, and a third wedge block 50 is slidably penetrated on one side of the snap-fit ​​seat 15. The second wedge block 49 is in contact with the inclined surface of the third wedge block 50, and a reserved groove for matching with the third wedge block 50 is concavely provided inwardly on one side of the mounting plate 16, and a moving spring is installed between the snap-fit ​​seat 15 and the third wedge block 50, and the third wedge block 50 is pushed out of the reserved groove by the moving spring;

[0047] It is worth noting that: when actively lubricating the shaft system body 19, since an extrusion chamber 42 is installed on one side of the engaging seat 15, and the walking wheel 40 moves with the engaging seat 15, when the shaft system body 19 moves to the test station, the walking wheel 40 moves upward under the guidance of the trapezoidal platform 7, drives the second plate 39 and the lifting arm 38 to move upward, and compresses the deformation spring 41. When the lifting arm 38 moves upward, the piston 43 is pulled upward in the extrusion chamber 42, and the lubricating oil above the piston 43 in the extrusion chamber 42 is discharged through the lubricating oil pump. The first outlet pipe 47 delivers the lubricating oil into the filling pipe 20, and then the technician rotates the shaft system body 19 so that the lubricating oil fills the rotating connection between the shaft system body 19 and the parallel frame 17, reducing the resistance of the subsequent test of the shaft system body 19. At the same time, the lifting arm 38 moves upward, and the second wedge block 49 squeezes the third wedge block 50, driving the third wedge block 50 to insert into the reserved groove of the mounting plate 16, thereby completing multiple locking of the mounting plate 16. The subsequent snap-fit ​​seat 15 follows the sliding table 14 to reset, and the walking wheel 40 The piston 43 is guided to the walking plate 6 via the trapezoidal platform 7, and the second plate 39 is pushed to reset via the deformation spring 41, and the second wedge block 49 is separated from the third wedge block 50. At this time, the third wedge block 50 is reset and separated from the mounting plate 16. At the same time, the piston 43 is pushed downward via the lifting arm 38, and the lubricating oil in the oil tank is sucked to the upper part of the extrusion chamber 42 via the first inlet pipe 45 to wait for post-lubrication treatment. When the piston 43 moves downward, the lubricating oil below the piston 43 in the extrusion chamber 42 is led out to the sliding table 14 via the second outlet pipe 48. , so as to ensure the smooth sliding of the sliding table 14. Therefore, when the shaft system body 19 completes a single switch, the shaft system body 19 and the sliding table 14 are lubricated once, making the equipment run more stably. When lubrication is not needed, it is only necessary to disassemble the top of the piston rod 44 and the top of the lifting arm 38. At the same time, the pipes of the No. 1 outlet pipe 47 and the No. 2 outlet pipe 48 are installed and disassembled, so that the technicians can freely choose whether to lubricate the shaft system body 19 and the sliding table 14 according to the lubrication requirements, and the overall use is convenient.

[0048] Embodiment 2: Based on the shaft system mechanism provided in Embodiment 1, this embodiment provides a further technical solution for the shaft system mechanism.

[0049] like Figure 4 , Figure 5 and Figure 8As shown, the two shaft systems are symmetrically arranged, and both shaft systems include a sliding table 14 that is slidably engaged in the slideway 5, and a snap-fit ​​seat 15 is integrally installed on the top of the sliding table 14. A mounting plate 16 is slidably engaged in the snap-fit ​​seat 15, and a storage area that cooperates with the mounting plate 16 is reserved in the snap-fit ​​seat 15. The top and the front end of the storage area are open on the snap-fit ​​seat 15, which is convenient for the mounting plate 16 to be pushed into the snap-fit ​​seat 15, and two slide grooves are symmetrically opened at the bottom of the snap-fit ​​seat 15, and slide bars are slidably engaged in the two slide grooves. The two slide bars are fixedly connected to the bottom of the mounting plate 16, and two flat The parallel frames 17 are provided with a positioning screw 18 at one edge of the mounting plate 16 by screwing, and a snap-fitting groove matching the positioning screw 18 is concavely provided on the snap-fitting seat 15. The positioning screw 18 is inserted into the snap-fitting groove to complete the preliminary locking. A shaft system body 19 is rotatably penetrated on the two parallel frames 17, and a refueling pipe 20 is connected and penetrated at the top of the two parallel frames 17. The bottom of the refueling pipe 20 extends to the contact position between the parallel frames 17 and the shaft system body 19. The hardness of the shaft system body 19 on the two shaft system mechanisms is different. The two ends of the shaft system body 19 are respectively connected to the torque sensor 3 and the load generator 12 through a coupling.

[0050] It should be noted that when installing the shaft system body 19, first push the mounting plate 16 into the snap-fit ​​seat 15, and restrict the shaft system body 19 on the snap-fit ​​seat 15 via the mounting plate 16, and at the same time rotate the positioning screw 18 to drive the positioning screw 18 to be inserted into the snap-fit ​​groove reserved on the snap-fit ​​seat 15 to complete the preliminary locking. Since the shaft system body 19 follows the mounting plate 16 to slide in the snap-fit ​​seat 15, the installation and removal of the shaft system body 19 is more time-saving and labor-saving, which is conducive to the replacement of the shaft system body 19;

[0051] It is worth noting that: when the shaft system body 19 is replaced, a shaft system mechanism is provided. Under normal circumstances, one of the shaft system mechanisms is driven by the No. 2 cylinder 22 to move to the test station on the replacement seat 4, that is, the sliding table 14 slides to the extreme position of the slideway 5. When position replacement is required, it is only necessary to control the No. 2 cylinder 22 and push it through the push arm 21 to move the sliding table 14 originally on the test station. At this time, the sliding table 14 in the other slideway 5 moves to the test station. The active switching of the two shaft system mechanisms is completed by the cooperation of the No. 2 cylinder 22 and the push arm 21. Different physical quantities are provided by the switching of the two shaft system mechanisms for torsional vibration testing, which improves the test accuracy, is conducive to the improvement and upgrading of the shaft system mechanism, and reduces the interference of torsional vibration.

[0052] In the embodiment of the present invention, the driving mechanism includes a push arm 21 that is slidably arranged at the center of the replacement seat 4, and the push arm 21 is arranged corresponding to the sliding table 14 that slides through the two shaft system mechanisms, and a No. 2 cylinder 22 is installed on one side of the replacement seat 4 through a bracket, and the output end of the No. 2 cylinder 22 is detachably fixedly connected to one end of the push arm 21, and two flexible members 23 are symmetrically arranged at both ends of the push arm 21, and the two flexible members 23 are respectively arranged corresponding to the sliding tables 14 of the two shaft system mechanisms, and the intermittent propulsion action of the push arm 21 is completed by the flexible members 23, and the two flexible members 23 both include detachable A No. 1 baffle ring 231 is fixedly mounted on the push arm 21, and a No. 2 baffle ring 232 is detachably fixedly mounted on the side of the sliding table 14 close to the No. 1 baffle ring 231. The No. 2 baffle ring 232 is slidably mounted on the push arm 21, and a flexible spring 233 is installed between the No. 1 baffle ring 231 and the No. 2 baffle ring 232, and the two ends of the flexible spring 233 are detachably fixedly connected to the inner walls of the No. 1 baffle ring 231 and the No. 2 baffle ring 232 respectively. The flexible spring 233 is correspondingly mounted on the outside of the push arm 21, and the power is intermittently transmitted to the sliding table 14 through the flexible spring 233 to complete the pushing action.

[0053] Embodiment 3: Based on the locking mechanism provided in Embodiment 1, this embodiment provides a further technical solution of the locking mechanism.

[0054] like Figures 9 to 11 As shown, the two locking mechanisms include two moving areas 24 symmetrically opened on the sliding table 14, the two moving areas 24 are located on both sides of the push arm 21, a No. 1 area 25 is opened on the sliding table 14 at the bottom of the two moving areas 24, and a No. 2 area 26 is opened on the top of the two moving areas 24 and connected to the sliding table 14, plug-ins 27 are slidably installed in the two moving areas 24, and an inclined surface 28 is provided on the side of the plug-in 27 close to the push arm 21, and a No. 1 wedge block 29 is installed in the two moving areas 24 on both sides of the push arm 21, and the No. 1 wedge block 29 is correspondingly slidably fitted with the inclined surface 28, and the bottom of the plug-in 27 extends to the No. 1 area 25, and two return springs 30 are installed in the No. 1 area 25, the two return springs 30 are connected to one side of the plug-in 27, and slots 31 are symmetrically opened on the side close to each other in the two slideways 5, and the two slots 31 are respectively arranged in cooperation with the two plug-ins 27, and the two plug-ins 27 are inserted into the slots 31 under the pressure of the No. 1 wedge block 29 to complete the locking;

[0055] It is worth noting that when locking the shaft system mechanism, a locking mechanism is provided. After the corresponding sliding table 14 moves to the extreme position of the slideway 5, since a flexible member 23 is installed between the push arm 21 and the sliding table 14, the flexible member 23 can continue to sense the movement amount of the No. 2 cylinder 22 after the sliding table 14 moves to the predetermined position. Therefore, when the No. 2 cylinder 22 moves, the two No. 1 wedge blocks 29 on the push arm 21 move in the two moving areas 24. Through the extrusion fit between the No. 1 wedge block 29 and the inclined surface 28 of the plug-in 27, the plug-in 27 is pushed to move toward the slot 31 in the moving area 24 to complete the locking action of the sliding table 14, so that the shaft system body 19 remains stable during the test and reduces interference. Similarly, when the two shaft system mechanisms are switched, the corresponding flexible members 23 thereon can complete the flexible perception, and the locking mechanism is driven by the No. 2 cylinder 22 to complete the locking operation of the sliding table 14. The eccentric cam 34 moves with the movement of the plug-in 27 toward the slot 31, and the rack 32 thereon pushes the gear 33 to rotate, so that the eccentric cam 34 rotates accordingly, and the rotation of the eccentric cam 34 pushes the roller and the gravity pin 35, and pushes the gravity pin 35 to move upward and insert into the positioning slot 36 to complete the locking of the mounting plate 16, further improving the stability of the shaft system body 19 during operation. For subsequent unlocking, it is only necessary to drive the No. 2 cylinder 22 to move toward the reset direction of the flexible spring 233. At this time, the push arm 21 pulls the No. 1 wedge block 29 to move, and the plug-in 27 is pushed to reset to the moving area 24 via the No. 2 reset spring 30. The eccentric cam 34 follows the movement of the plug-in 27 to reset and rotate, so that the gravity pin 35 moves down to the No. 2 area 26 under gravity, thereby completing a rapid unlocking action, so that the shaft system mechanism that has left the test station is unlocked, which is beneficial to the subsequent disassembly, replacement and maintenance of the shaft system body 19, and is convenient for technicians to operate;

[0056] In the embodiment of the present invention, a rack 32 is recessed inwardly at the top of the plug-in 27, and a gear 33 is rotatably installed in the No. 2 zone 26 through a bracket, and the gear 33 is meshed with the rack 32. An eccentric cam 34 is detachably fixedly installed on one side of the gear 33, and a gravity pin 35 is slidably penetrated through the top of the No. 2 zone 26. The gravity pin 35 is hidden in the No. 2 zone 26 by weight. In order to improve the resetting effect of the gravity pin 35, an active spring is installed between the gravity pin 35 and the No. 2 zone 26, and the gravity pin 35 is pushed to reset toward the plug-in 27 by the active spring. A roller is installed at the bottom of the gravity pin 35, and the roller is detachably in contact with the surface of the eccentric cam 34. The gravity pin 35 is normally hidden in the No. 2 zone 26, and a positioning groove 36 cooperating with the gravity pin 35 is provided at the bottom of the mounting plate 16. The gravity pin 35 is pushed upward by the eccentric cam 34 to be inserted into the positioning groove 36 to complete locking.

[0057] Embodiment 4: A method for testing torsional vibration of a shaft generator for a container ship, the method comprising the following steps:

[0058] Step 1: First, assemble the two shaft system mechanisms correspondingly on the replacement seat 4, and then push one of the shaft system mechanisms to a predetermined position on the replacement seat 4 through a driving mechanism;

[0059] Step 2, then connect the two ends of the shaft system mechanism to the torque sensor 3 and the load mechanism respectively, and then drive the shaft system mechanism and the load mechanism to rotate through the simulation motor 2 to perform torsional vibration testing;

[0060] Step 3: After the measurement is completed, the driving mechanism is used to switch another shaft system mechanism to connect with the torque sensor 3 and the load mechanism, and different physical quantities are provided by switching the two shaft system mechanisms to perform torsional vibration testing;

[0061] Step 4: By providing a locking mechanism, after the shaft system mechanism reaches a predetermined position, the locking mechanism is driven to operate to complete multiple locking of the shaft system mechanism.

[0062] The present invention provides a torsional vibration test device and method for a shaft-belt generator for a container ship, and the specific working principle is as follows: first, two shaft system mechanisms are assembled correspondingly on a replacement seat 4, and then one of the shaft system mechanisms is pushed to move to a predetermined position on the replacement seat 4 by a driving mechanism, and then the two ends of the shaft system mechanism are connected to a torque sensor 3 and a load mechanism through a coupling, and then the shaft system mechanism and the load mechanism are driven to rotate by a simulation motor 2 to perform a torsional vibration test. After the measurement is completed, the other shaft system mechanism is switched to dock with the torque sensor 3 and the load mechanism by the driving mechanism again, and different physical quantities are provided by switching the two shaft system mechanisms to perform a torsional vibration test, thereby improving the test accuracy, facilitating the improvement and upgrading of the shaft system mechanism, and reducing the interference of torsional vibration. At the same time, a locking mechanism is installed on the shaft system mechanism, and the locking mechanism provides a flexible propulsion force via the driving mechanism, so that after the shaft system mechanism reaches the predetermined position, the locking mechanism is driven to act to complete multiple locking of the shaft system mechanism, so that the shaft system mechanism obtains a stable test state, and after the shaft system mechanism moves out of the predetermined position, the locking mechanism is unlocked, which is beneficial for the staff to complete active replacement of the shaft system mechanism and reduces the difficulty of installation and disassembly.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0064] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A torsional vibration test device for a shaft generator for a container ship, comprising a test bench (1), a simulated motor (2) being mounted on one side of an upper surface of the test bench (1), and a torque sensor (3) being mounted concentrically at an output end of the simulated motor (2), characterized in that: A load mechanism is installed on the other side of the upper surface of the test bench (1), and a replacement seat (4) is added to the upper surface of the test bench (1). Two shaft system mechanisms are installed in combination on the replacement seat (4), and a driving mechanism is inserted through the replacement seat (4). The driving mechanism is used to reciprocate the two shaft system mechanisms to the middle position of the replacement seat (4), and the two shaft system mechanisms are flexibly pushed and the position replacement operation is completed through the driving mechanism. The two shaft system mechanisms are respectively connected to the torque sensor (3) and the load mechanism to complete the test action, and locking mechanisms are installed on the two shaft system mechanisms. The two locking mechanisms complete the linkage cooperation with the two shaft system mechanisms, and the two locking mechanisms complete the respective locking operation of the two shaft system mechanisms; Two slideways (5) are symmetrically recessed on both sides of the replacement seat (4), and the two shaft system mechanisms both include a sliding table (14) slidably engaged in the slideways (5); The driving mechanism comprises a push arm (21) slidably arranged at the center of the replacement seat (4), the push arm (21) being arranged corresponding to the sliding tables (14) slidingly passing through the two shaft system mechanisms, and a second cylinder (22) being installed on one side of the replacement seat (4) through a bracket, the output end of the second cylinder (22) being detachably fixedly connected to one end of the push arm (21), and two flexible members (23) being symmetrically arranged at both ends of the push arm (21), the two flexible members (23) being arranged corresponding to the sliding tables (14) of the two shaft system mechanisms respectively, and the intermittent pushing action of the push arm (21) is completed through the flexible members (23); The two locking mechanisms each include two moving areas (24) symmetrically opened on the sliding platform (14), a first area (25) being opened on the sliding platform (14) at the bottom of the two moving areas (24), and a second area (26) being opened on the sliding platform (14) at the top of the two moving areas (24), and a plug-in (27) being slidably installed in the two moving areas (24), and an inclined surface (28) being provided on one side of the plug-in (27) close to the push arm (21), and two moving areas on both sides of the push arm (21) A wedge block (29) is installed in each of the areas (24), and the wedge block (29) is in sliding contact with the inclined surface (28). The bottom of the plug (27) extends into the area (25) correspondingly. Two return springs (30) are installed in the area (25), and the two return springs (30) are connected to one side of the plug (27). Slots (31) are symmetrically opened on one side close to each other in the two slideways (5), and the two slots (31) are respectively arranged in cooperation with the two plugs (27).

2. The torsional vibration testing equipment for a shaft generator for a container ship according to claim 1, characterized in that: A walking board (6) is installed on one side of the replacement seat (4), and a trapezoidal platform (7) is protruding upward at the middle position of the upper surface of the walking board (6).

3. The torsional vibration testing equipment for a shaft generator for a container ship according to claim 2, characterized in that: The load mechanism comprises two symmetrically arranged slide rails (8), a slide seat (9) slidably engaged on the two slide rails (8), a three-dimensional adjustment platform (10) is mounted on the upper surface of the slide seat (9), an assembly seat (11) is detachably mounted on the three-dimensional adjustment platform (10), a load generator (12) is mounted on the assembly seat (11), and a No. 1 cylinder (13) is mounted on the upper surface of the test bench (1), the output end of the No. 1 cylinder (13) is drivingly connected to one side of the slide seat (9).

4. The torsional vibration testing equipment for a shaft generator for a container ship according to claim 3, characterized in that: A snap-fit ​​seat (15) is integrally mounted on the top of the sliding table (14), a mounting plate (16) is slidably snap-fitted in the snap-fit ​​seat (15), two parallel frames (17) are symmetrically mounted on the upper surface of the mounting plate (16), and a positioning screw (18) is screwed and mounted on one side edge of the mounting plate (16) by means of a thread, a shaft system body (19) is rotatably penetrated on the two parallel frames (17), and a refueling pipe (20) is connected and penetrated on the top of the two parallel frames (17), and two ends of the shaft system body (19) are respectively connected to the torque sensor (3) and the load generator (12) through a coupling.

5. The torsional vibration testing equipment for a shaft generator for a container ship according to claim 4, characterized in that: The two flexible members (23) each comprise a first retaining ring (231) which is detachably fixedly sleeved on the push arm (21); a second retaining ring (232) is detachably fixedly mounted on a side of the sliding platform (14) close to the first retaining ring (231); the second retaining ring (232) is slidably sleeved on the push arm (21); a flexible spring (233) is mounted between the first retaining ring (231) and the second retaining ring (232); the flexible spring (233) is correspondingly sleeved on the outside of the push arm (21); and power is intermittently transmitted to the sliding platform (14) through the flexible spring (233) to complete the propulsion action.

6. The torsional vibration testing equipment for a shaft generator for a container ship according to claim 5, characterized in that: A rack (32) is recessed inwardly at the top of the plug-in (27), and a gear (33) is rotatably mounted in the No. 2 zone (26) through a bracket. The gear (33) meshes with the rack (32). An eccentric cam (34) is detachably fixedly mounted on one side of the gear (33), and a gravity pin (35) is slidably penetrated at the top of the No. 2 zone (26). The gravity pin (35) is normally hidden in the No. 2 zone (26), and a positioning groove (36) cooperating with the gravity pin (35) is provided at the bottom of the mounting plate (16).

7. A torsional vibration test device for a shaft generator for a container ship according to claim 6, characterized in that: A first plate (37) is installed on one side of each of the two engaging seats (15), a lifting arm (38) is slidably penetrated on the first plate (37), a second plate (39) is slidably engaged with the side wall of the engaging seat (15) below the first plate (37), the second plate (39) is fixedly sleeved on the outside of the lifting arm (38), and a running wheel (40) is rotatably installed at the bottom of the lifting arm (38), and the running wheel (40) is in contact with the running plate (6) and the trapezoidal platform (7); A deformation spring (41) is installed between the first plate (37) and the second plate (39), an extrusion chamber (42) is installed on one side of the engaging seat (15), a piston (43) is slidably installed in the extrusion chamber (42), a piston rod (44) is concentrically installed on the top of the piston (43), the top of the piston rod (44) is detachably fixedly connected to the top of the lifting arm (38), a first inlet pipe (45) and a second inlet pipe (46) are respectively connected and installed on the top and bottom of one side of the extrusion chamber (42), and a first outlet pipe (47) and a second outlet pipe (48) are respectively connected and installed on the top and bottom of the other side of the extrusion chamber (42), and the first outlet pipe (47) is connected to the refueling pipes (20) on the two parallel frames (17) through a pipeline.

8. A method for testing torsional vibration of a shaft generator for a container ship, using a torsional vibration testing device for a shaft generator for a container ship according to any one of claims 1 to 7, characterized in that: The test method specifically includes the following steps: Step 1: First, assemble the two shaft system mechanisms correspondingly on the replacement seat (4), and then push one of the shaft system mechanisms to a predetermined position on the replacement seat (4) through a driving mechanism; Step 2: Then, the two ends of the shaft system mechanism are connected to the torque sensor (3) and the load mechanism respectively, and then the shaft system mechanism and the load mechanism are driven to rotate by the simulation motor (2) to perform a torsional vibration test; Step 3: After the measurement is completed, the driving mechanism is used to switch another shaft system mechanism to connect with the torque sensor (3) and the load mechanism, and different physical quantities are provided by switching the two shaft system mechanisms to perform a torsional vibration test; Step 4: By providing a locking mechanism, after the shaft system mechanism reaches a predetermined position, the locking mechanism is driven to operate to complete multiple locking of the shaft system mechanism.

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