Variable-pitch slip ring testing device based on dynamic transmission support

Abstract

The invention discloses a variable-pitch slip ring testing device and method based on a dynamic transmission support, and relates to the technical field of slip ring test.The variable-pitch slip ring testing device comprises a base and the dynamic transmission support, and the dynamic transmission support comprises a displacement adjusting frame and a multidirectional driving rod assembly assembled with the displacement adjusting frame; the executing end of the multidirectional driving rod assembly is connected with a friction conduction head assembly; the lower housing is arranged on the dynamic transmission bracket; the detection conduction ring assembly is arranged at the end part, close to the multidirectional driving rod assembly, of the lower housing; and the test environment docking bin is arranged on the base. According to the invention, a multi-position dynamic test can be carried out on the slip ring to-be-tested body, and the execution end of the slip ring to-be-tested body is driven to carry out a friction rotation test under the structural effects of the detection conduction ring assembly and the friction conduction head assembly. Influences caused by factors such as different speeds, different shifting directions, hand shaking and the like when a dynamometer is used for shifting the conductive slip ring rotor are effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of slip ring testing, and in particular to a variable pitch slip ring testing device based on a dynamic transmission bracket. Background Art

[0002] Wind turbine pitch control slip ring technology is one of the core technologies for achieving energy transmission and signal control in wind turbine pitch control systems. Slip rings must be highly reliable, but wind turbines are often located in remote or harsh environments, resulting in high maintenance costs. Therefore, slip ring design performance must consider durability, dustproofing, waterproofing, and vibration resistance.

[0003] To this end, the existing technology provides a variety of test devices for testing wind turbine pitch slip rings, but the existing test devices have the following disadvantages:

[0004] First, the existing method for measuring the slip ring friction torque is generally as follows: a handheld dynamometer is used to move a point on the circumference of the conductive slip ring rotor to measure the required starting friction torque. However, repeated tests using this test method will produce large discrepancies in the measured data, and the data measured by different people will also vary. The main reasons for this discrepancy are the different speeds and directions of the conductive slip ring rotor when the dynamometer is used each time, as well as hand shaking.

[0005] Second, a driving motor is generally used to drive the wind turbine pitch slip ring actuator to rotate. During the rotation of the slip ring actuator, a series of data inspections are generally static test processes considering the connection relationship of the shafts, which cannot well simulate the actual working environment of the slip ring. Summary of the Invention

[0006] The purpose of the present invention is to provide a variable pitch slip ring testing device based on a dynamic transmission bracket. The device is equipped with a displacement adjustment frame and a multi-directional drive rod assembly, which can perform dynamic tests on the slip ring to be tested at multiple positions. At the same time, under the action of the detection conductive ring assembly and the friction conductive head assembly structure, the execution end of the slip ring to be tested is driven to perform a friction rotation test, effectively avoiding the influence of factors such as different speeds, different directions, and hand shaking when the conductive slip ring rotor is moved by a dynamometer.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a pitch slip ring test device based on a dynamic transmission support, comprising: a base, a dynamic transmission support, the dynamic transmission support including a displacement adjustment support, and a multi-directional drive rod assembly assembled with the displacement adjustment support, the actuator end of the multi-directional drive rod assembly being connected to a friction conduction head assembly; a lower cover disposed on the dynamic transmission support, the lower cover having a clamping assembly disposed therein for clamping and assembling a slip ring to be tested; and a detection conduction ring assembly disposed at an end of the lower cover near the multi-directional drive rod assembly, one side of the detection conduction ring assembly being assembled and connected to the axial end of the slip ring to be tested and the other side of the detection conduction ring assembly being capable of docking with the friction conduction head assembly for friction torque testing; and a test environment docking chamber disposed on the base, the test environment docking chamber being positioned above the lower cover and capable of docking with the lower cover, with multiple test environment docking chambers being provided. Under the action of the dynamic transmission support, the slip ring to be tested can be driven to undergo dynamic testing, and the slip ring to be tested within the lower cover can also be driven to dock with multiple test environment docking chambers in sequence for testing, thereby achieving comprehensive testing under multiple environments.

[0008] Preferably, the displacement adjustment frame includes a base plate, and a fixed seat and a movable seat respectively assembled on the ends of the base plate; the fixed seat is arranged in an "L" shape, and its transverse section is provided with a second meshing wheel, and a first meshing wheel fixed on the movable seat, the first meshing wheel and the second meshing wheel are engaged for transmission, and a second motor fixed on the base, the output shaft of the second motor passes through the through hole where the base is located and is fixedly connected to the second meshing wheel; the end of the movable seat is vertically provided with an adjustment long frame, and a first hydraulic telescopic rod arranged at the top of the adjustment long frame, and the output end of the first hydraulic telescopic rod is provided with an assembly connector; the vertical section of the fixed seat is installed with a servo motor, and the multi-directional drive rod assembly is assembled between the assembly connector and the servo motor; when the assembly connector moves horizontally and longitudinally, the multi-directional drive rod assembly adapts to the angle and length changes to adapt to the transmission between the servo motor and the assembly connector.

[0009] Preferably, the multi-directional drive rod assembly includes a first universal joint unit and a second universal joint unit, the first universal joint unit is connected to the output shaft end where the servo motor is located, the second universal joint unit is connected to the end of the assembly connector, and a sleeve body and a connecting shaft body are respectively connected between the first universal joint unit and the second universal joint unit, and the connecting shaft body and the sleeve body are splined; the first universal joint unit includes a first universal joint head and a second universal joint head, and a first cross connecting shaft arranged between the first universal joint head and the second universal joint head; the second universal joint unit includes a third universal joint head and a fourth universal joint head, and a second cross connecting shaft arranged between the third universal joint head and the fourth universal joint head.

[0010] Preferably, the assembly connecting member includes a first mounting member, the first mounting member is in an inverted "U" shape and a vibration component is arranged inside it, and an assembly block connected to the vibration component. The friction conduction head component is arranged on the assembly block and connected to the second universal joint unit; the vibration component includes a transmission member, the transmission member is connected to the bottom of the first mounting member through a spring, and a first working motor mounted on the side wall of the first mounting member. The output shaft of the first working motor penetrates through the first mounting member and is connected with a rotating rod, and an eccentric wheel is mounted on the rotating rod, and the eccentric wheel can act on the upper surface of the transmission member.

[0011] Preferably, the detection conduction ring component includes a transmission ring body rotating on the lower housing, and the transmission ring body is composed of a transmission ring and an extension ring that are interconnected on both sides; and a locking member screwed on the extension ring. When the locking member is screwed into and acts on the execution end where the slip ring to be measured is located, it can be used for the fixed connection between the transmission ring body and the execution end where the slip ring to be measured is located; a data collector is connected to the outer end of the extension ring, and the data collector includes a resistance meter and a torque sensor.

[0012] Preferably, the friction conduction head component includes an assembly shaft. One end of the assembly shaft penetrates through the through hole where the assembly block is located and is connected to the fourth universal joint head where the second universal joint unit is located, and the other end of the assembly shaft is fixedly connected with a conduction shaft; the end of the conduction shaft far from the assembly shaft extends into the detection conduction ring component and is fixed with an end block. Two relatively slidable friction transmission blocks are mounted on the end block, and a spline sleeve spline-connected to the conduction shaft. A connecting rod is hinged between the spline sleeve and the friction transmission block; and a second mounting member is rotationally limited on the conduction shaft, and a hydraulic cylinder is arranged at the end of the second mounting member. The output end of the hydraulic cylinder is connected with a telescopic rod body. When the telescopic rod body expands and contracts, it is used to drive the position adjustment of the spline sleeve; when the outer wall of the friction transmission block expands and supports against the inner wall of the transmission ring body, friction transmission can be formed; and a pressure sensor is arranged on the outer wall of the friction transmission block, which is used to measure the pressure value formed when the pressure sensor acts on the inner wall of the transmission ring body.

[0013] Preferably, the lower housing is in a semi-circular cover structure. The lower housing is in a semi-circular cover structure and is fixed to the bottom of the assembly block through an extension bracket at its bottom. The clamping component includes a clamping frame, and annularly distributed hydraulic telescopic cylinders are arranged on the inner wall of the clamping frame; and clamping heads are arranged at the ends of each hydraulic telescopic cylinder.

[0014] Preferably, the test environment docking chamber includes a bracket and a placement rack arranged on the top of the bracket, a plurality of gas generating tanks are provided at one end of the placement rack, and a mounting rail is fixedly connected to the other end thereof, as well as a plurality of docking chamber bodies arranged on the mounting rail, and a multi-channel control valve body assembly connected to each of the docking chamber bodies; each group of docking chamber bodies includes a slide rail and a slider slidably installed in the slide rail, the slider is connected to the bottom end of the slide rail by a tension spring, and an upper cover shell fixed to the side wall of the slider, and a sealing strip is provided on the lower cover shell and the upper cover shell. When the displacement adjustment frame is in operation, the lower cover shell can be docked with the upper cover shell to form a closed test environment.

[0015] Preferably, the multi-channel control valve body assembly includes several interfaces arranged on the mounting rail, each of the interfaces can be connected to the corresponding gas generating tank through a conduit, and several of the gas generating tanks can respectively provide cold air, wind and sand, salt mist, hot air, acidic gas, and alkaline gas; the multi-channel control valve body assembly also includes a valve body structure arranged on the top of the upper cover shell, and the three adjacent interfaces are respectively connected to each corresponding valve body structure through connecting pipes, and when the valve body structure is switched, it is used to form different test environments.

[0016] Preferably, the valve body structure includes a valve housing and a top cover detachably mounted on the valve housing; the valve housing is communicated with the top of the upper cover, three passage holes are provided on the top cover, a first valve plate is provided on the lower surface of the top cover corresponding to the passage holes, a rotating plate is provided in the middle of the top cover via a rotating shaft, and the rotating shaft passes through the through hole where the top cover is located and is connected to a handle, a switching slot is provided on the rotating plate, and a second valve plate is provided on the bottom inner portion of the valve housing;

[0017] The second valve plate, the switching slot and the first valve plate share a common center. When the switching slot on the rotating plate rotates, the through holes where the first valve plate and the second valve plate are located can overlap with the channel holes in sequence to switch the communication of the channel holes.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention provides a dynamic transmission bracket equipped with a displacement adjustment bracket and a multi-directional drive rod assembly, which can perform dynamic testing on a slip ring under test at multiple positions. Due to the configuration of the multi-directional drive rod assembly, even when the slip ring under test is in dynamic operation, the driving force of the power output always acts on the actuator end of the slip ring under test. In addition, under the action of the test environment docking chamber, the dynamic transmission bracket drives the slip ring under test in the lower housing to sequentially dock with multiple groups of test environment docking chambers for docking testing, thereby achieving comprehensive testing in multiple environments, that is, facilitating a good simulation of the actual working environment of the slip ring.

[0020] 2. As another embodiment of the present invention, by driving the spline sleeve toward the transmission ring, the connecting rod drives the two oppositely disposed friction transmission blocks on the end block to move back and forth, thereby clinging to the side wall of the transmission ring. When the friction transmission blocks make frictional contact with the transmission ring, they drive the actuator end of the slip ring to be measured where the transmission ring is located to rotate, which is the starting friction torque. The value of the pressure sensor is recorded, and the magnitude of the friction torque is calculated, effectively avoiding the influence of factors such as different speeds and directions of the conductive slip ring rotor when the dynamometer is used to move it. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention from a first viewing angle;

[0022] Figure 2 for Figure 1 A schematic diagram of a second perspective stereoscopic structure;

[0023] Figure 3 for Figure 1 Schematic diagram of the top view structure;

[0024] Figure 4 for Figure 1 A schematic diagram of the front structure of FIG.

[0025] Figure 5 This is a schematic diagram of the disassembled structure of the lower cover and the upper cover of the present invention;

[0026] Figure 6 This is a schematic diagram of the docking structure of the detection conductive ring assembly and the friction conductive head assembly of the present invention;

[0027] Figure 7 It is an enlarged structural schematic diagram of the dynamic transmission bracket of the present invention;

[0028] Figure 8 This is a schematic diagram of the disassembled structure of the valve body structure of the present invention;

[0029] Figure 9 It is a partially enlarged structural schematic diagram of the multi-directional drive rod assembly of the present invention;

[0030] Figure 10 It is a partial enlarged structural diagram of the friction conductive head assembly of the present invention;

[0031] Figure 11 It is a schematic structural diagram of the vibration component of the present invention.

[0032] In the figure: 1. base; 2. gas generator tank; 3. bracket; 4. servo motor; 5. placement rack; 7. upper cover; 8. mounting rail; 9. interface; 10. top cover; 11. connecting pipe; 12. handle; 14. lower cover; 17. fixing seat; 18. first universal joint; 19. second universal joint; 20. shaft sleeve; 21. connecting shaft; 22. third universal joint; 25. first meshing wheel; 26. second meshing wheel; 27. movable seat; 28. adjustment long frame; 29. ​​first hydraulic telescopic rod; 30. fourth universal joint; 31. first mounting part; 32. assembly block; 33. second mounting part; 34. assembly shaft; 35. telescopic rod body; 36. spline sleeve; 37. transmission ring body; 371. transmission ring; 372. extension ring;

[0033] 38. Slip ring test piece; 39. Locking member; 40. First working motor; 41. Rotating rod; 42. Eccentric wheel; 43. Transmission member; 44. Spring; 46. Clamping frame; 47. Hydraulic telescopic cylinder; 471. Clamping head; 48. Transmission shaft; 49. Extension frame; 50. Friction transmission block; 51. Connecting rod; 52. End block; 53. Pressure sensor; 54. Second motor; 60. Valve housing;

[0034] 61, bottom plate; 63, hydraulic cylinder; 601, channel hole; 602, first valve plate; 603, second valve plate; 604, rotating plate; 605, switching slot;

[0035] 711. Slider; 712. Tension spring; 713. Slide rail. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] Example 1

[0038] See also Figures 1 to 11The present invention preferably provides a technical solution: a variable pitch slip ring test device based on a dynamic transmission support, comprising: a base 1, a dynamic transmission support, the dynamic transmission support including a displacement adjustment support and a multi-directional drive rod assembly assembled with the displacement adjustment support, the actuator end of the multi-directional drive rod assembly being connected to a friction conduction head assembly; a lower cover 14 disposed on the dynamic transmission support, the lower cover 14 having a clamping assembly disposed therein for clamping and assembling a slip ring test object 38; and a detection conduction ring assembly disposed at an end of the lower cover 14 near the multi-directional drive rod assembly, one side of the detection conduction ring assembly being assembled and connected to the axial end of the slip ring test object 38 and the other side of the detection conduction ring assembly being capable of docking with the friction conduction head assembly for friction torque testing; and a test environment docking chamber disposed on the base 1, the test environment docking chamber being positioned above the lower cover 14 and capable of docking with the lower cover 14, with multiple test environment docking chambers being provided. Under the action of the dynamic transmission support, the slip ring test object 38 can be driven to undergo dynamic testing, and the slip ring test object 38 in the lower cover 14 can also be driven to dock with multiple test environment docking chambers in sequence for testing, thereby achieving comprehensive testing under multiple environments.

[0039] Considering the connection relationship of the shaft, the test process is generally static and cannot well simulate the actual working environment of the slip ring. However, in this application, a dynamic transmission bracket is provided, which is equipped with a displacement adjustment bracket and a multi-directional drive rod assembly, which can perform dynamic testing of the slip ring test object 38 in multiple positions. Due to the setting of the multi-directional drive rod assembly, even though the slip ring test object 38 is in dynamic operation, the driving force of the power output always acts on the execution end of the slip ring test object 38;

[0040] Under the action of the test environment docking chamber, the dynamic transmission bracket drives the slip ring test body 38 in the lower cover 14 to perform docking tests with multiple groups of test environment docking chambers in sequence, thereby realizing comprehensive testing under multiple environments, that is, simulating the real working environment of the slip ring well.

[0041] By setting up the detection conductive ring assembly and the friction conductive head assembly, the friction transmission between the structures is used to drive the actuator end of the slip ring to be tested to perform a friction rotation test, effectively avoiding the influence of factors such as different speeds, different turning directions, and hand shaking when the conductive slip ring rotor is turned by the dynamometer.

[0042] Furthermore, the displacement adjustment frame includes a base plate 61, and a fixed seat 17 and a movable seat 27 respectively assembled at the ends of the base plate 61; the fixed seat 17 is arranged in an "L" shape, and its horizontal section is provided with a second meshing wheel 26, and a first meshing wheel 25 fixed on the movable seat 27, the first meshing wheel 25 and the second meshing wheel 26 are meshed for transmission, and a second motor 54 fixed on the base 1, the output shaft of the second motor 54 passes through the through hole where the base 1 is located and is fixedly connected to the second meshing wheel 26; the end of the movable seat 27 is vertically provided with an adjustment long frame 28, and a first hydraulic telescopic rod 29 arranged at the top of the adjustment long frame 28, and the output end of the first hydraulic telescopic rod 29 is provided with an assembly connector; the vertical section of the fixed seat 17 is installed with a servo motor 4, and the multi-directional drive rod assembly is assembled between the assembly connector and the servo motor 4; when the assembly connector moves horizontally and longitudinally, the multi-directional drive rod assembly adapts to the angle and length changes to adapt to the transmission between the servo motor 4 and the assembly connector.

[0043] Furthermore, the multi-directional drive rod assembly includes a first universal joint unit and a second universal joint unit, the first universal joint unit is connected to the output shaft end where the servo motor 4 is located, the second universal joint unit is connected to the end of the assembly connector, and the shaft sleeve body 20 and the connecting shaft body 21 are respectively connected between the first universal joint unit and the second universal joint unit, and the connecting shaft body 21 and the shaft sleeve body 20 are splined; the first universal joint unit includes a first universal joint head 18 and a second universal joint head 19, and a first cross connecting shaft arranged between the first universal joint head 18 and the second universal joint head 19; the second universal joint unit includes a third universal joint head 22 and a fourth universal joint head 30, and a second cross connecting shaft arranged between the third universal joint head 22 and the fourth universal joint head 30.

[0044] like Figure 4 、 7 As shown in Figures 9 and 9 , when the second motor 54 is working and drives the second meshing wheel 26 to deflect, the first meshing wheel 25 and the second meshing wheel 26 can further drive the movable seat 27 to deflect, thereby achieving the angular deflection adjustment of the horizontal position;

[0045] By further setting a multi-directional drive rod assembly, specifically as Figure 9, wherein the first universal joint unit and the second universal joint unit are existing mature technologies. Here, a cross-axis rigid universal joint is adopted, which is composed of parts such as a universal joint fork, a cross shaft, needle roller bearings, oil seals, sleeves, bearing caps, etc. A universal joint, that is, a universal joint, is a mechanical part for realizing power transmission at a variable angle and is used at positions where the direction of the transmission axis needs to be changed. It is connected to the shaft sleeve body 20 and the connecting shaft body 21 by splines, so that the transmission distances of the first universal joint unit and the second universal joint unit can be telescopically adjusted. Therefore, after the position of the assembly block 32 changes, the corresponding first universal joint unit and second universal joint unit complete steering in different directions, and the shaft sleeve body 20 and the connecting shaft body 21 perform distance-adaptive stretching, so that the power of the output shaft where 4 is located can always be transmitted to the conduction shaft 48.

[0046] Embodiment 2

[0047] As another implementation manner of the present invention, the assembly connecting piece includes a first mounting piece 31, the first mounting piece 31 is in an inverted "U" shape and a vibration component is arranged inside it, and an assembly block 32 connected to the vibration component. The friction conduction head component is arranged on the assembly block 32 and is connected to the second universal joint unit; the vibration component includes a transmission piece 43, the transmission piece 43 is connected to the bottom of the first mounting piece 31 through a spring 44, and a first working motor 40 installed on the side wall of the first mounting piece 31. The output shaft of the first working motor 40 penetrates through the first mounting piece 31 and is connected with a rotating rod 41, and an eccentric wheel 42 is installed on the rotating rod 41, and the eccentric wheel 42 can act on the upper surface of the transmission piece 43.

[0048] In this embodiment, based on the dynamic transmission bracket of Embodiment 1, a vibration component is further provided, as Figure 10 , 11 shown. When the first working motor 40 works, it drives the eccentric wheel 42 where the rotating rod 41 is located to rotate at a high speed. Under the action of the spring 44, the transmission piece 43 realizes reciprocating vibration up and down, thereby driving the assembly block 32 at the lower part of the first mounting piece 31 to vibrate up and down, so as to drive the slip ring to-be-tested body 38 to perform a driving test in a vibrating state. When the first working motor 40 does not work, it is a test without vibration.

[0049] Embodiment 3

[0050] As other implementation manners of the present invention, the detection conduction ring component includes a transmission ring body 37 rotating on the lower housing 14. The transmission ring body 37 is composed of a transmission ring 371 and an extension ring 372 that are communicated with each other on both sides; and a locking piece 39 screwed on the extension ring 372. When the locking piece 39 is screwed into and acts on the execution end where the slip ring to-be-tested body 38 is located, it can be used for the fixed connection between the transmission ring body 37 and the execution end where the slip ring to-be-tested body 38 is located; a data collector is connected to the outer end of the extension ring 372, and the data collector includes a resistance meter and a torque sensor;

[0051] Furthermore, the friction conduction head assembly includes an assembly shaft 34, one end of which passes through the through hole where the assembly block 32 is located and is connected to the fourth universal joint head 30 where the second universal joint unit is located, and the other end of the assembly shaft 34 is fixedly connected to the conduction shaft 48; the conduction shaft 48 extends from the end of the assembly shaft 34 into the detection conduction ring assembly and is fixed with an end block 52, on which two relatively slidable friction transmission blocks 50 are mounted, as well as a spline sleeve 36 splined to the conduction shaft 48, between which the spline sleeve 36 and the friction transmission block 50 are connected. A connecting rod 51 is hinged; and the transmission shaft 48 has a second mounting part 33 for upper limit rotation, and a hydraulic cylinder 63 is arranged at the end of the second mounting part 33. The output end of the hydraulic cylinder 63 is connected to the telescopic rod body 35. When the telescopic rod body 35 is extended or retracted, it is used to drive the position adjustment of the spline sleeve 36; when the outer wall of the friction transmission block 50 expands and acts on the inner wall of the transmission ring body 37, friction transmission can be formed; and a pressure sensor 53 is arranged on the outer wall of the friction transmission block 50, which is used to measure the pressure value formed by the friction transmission block 50 acting on the inner wall of the transmission ring body 37.

[0052] In this embodiment, the conventional method for measuring the slip ring friction torque is as follows: a handheld dynamometer is used to move a point on the circumference of the conductive slip ring rotor to measure the required starting friction torque. First, the detection conductive ring assembly is set up. Since the execution end of the slip ring test object 38, i.e., the inner shaft, is conveniently connected to the friction conductive head assembly and also conveniently connected to a data collector, such as a resistance meter and a torque sensor, the following is set up: Figure 6 The transmission ring 37 structure shown, the locking members 39 where the extension ring 372 is located, preferably have four, when the spiral acts on the execution end where the slip ring to be tested 38 is located, the transmission ring 371 can be connected to the execution end of the slip ring to be tested 38, and when the locking members 39 are connected to the data collector, the test data can be transmitted;

[0053] A friction conduction head assembly is further provided, such as Figure 7 、 10As shown, the driving force of the servo motor 4, under the connection action of the multi-directional drive rod assembly, drives the transmission shaft 48 to rotate. Due to the limited rotation installation of the second mounting member 33 and the spline connection between the spline sleeve 36 and the transmission shaft 48, when the hydraulic cylinder 63 is working, the extension length of the telescopic rod body 35 is controlled and driven, which can drive the spline sleeve 36 to move to the left. When the spline sleeve 36 moves toward the direction close to the transmission ring 371, under the action of the connecting rod 51, the two oppositely arranged friction transmission blocks 50 on the end block 52 can be driven to move backward and then close to the side wall of the transmission ring 371. When the friction transmission blocks 50 and the transmission ring 371 are in frictional contact, the execution end of the slip ring to be measured 38 where the transmission ring 371 is located can be driven to rotate, which is the starting friction torque. The value of the pressure sensor 53 is recorded, that is, the magnitude of the friction torque is calculated, which effectively avoids the influence of factors such as different speeds, different toggling directions, and hand shaking when using a dynamometer to toggle the conductive slip ring rotor.

[0054] Example 4

[0055] As another embodiment of the present invention, the lower cover shell 14 is a semi-circular cover structure and is fixed to the bottom of the assembly block 32 through an extension frame 49 at its bottom. The clamping assembly includes a clamping frame 46, and the inner wall of the clamping frame 46 is provided with an annularly distributed hydraulic telescopic cylinder 47; and a clamping head 471 is arranged at the end of each hydraulic telescopic cylinder 47.

[0056] Furthermore, the test environment docking chamber includes a bracket 3 and a placement rack 5 arranged on the top of the bracket 3, a plurality of gas generating tanks 2 are arranged at one end of the placement rack 5, and the other end thereof is fixedly connected to a mounting rail 8, as well as a plurality of docking chamber bodies arranged on the mounting rail 8, and a multi-channel control valve body assembly connected to each docking chamber body; each group of docking chamber bodies includes a slide rail 713, and a slider 711 slidably installed in the slide rail 713, the slider 711 is connected to the bottom end of the slide rail 713 by a tension spring 712, and an upper cover shell 7 fixed to the side wall of the slider 711, and a sealing strip arranged on the lower cover shell 14 and the upper cover shell 7. When the displacement adjustment frame is running, the lower cover shell 14 can be docked with the upper cover shell 7 to form a closed test environment.

[0057] In this embodiment, based on the embodiment 1, that is, based on the dynamic transmission bracket structure, a lower cover 14 is further provided. Figure 1 、 5 As shown, the movement of the dynamic transmission bracket can further drive the lower cover 14 and the upper cover 7 at the corresponding position to form a closed test environment, and under the action of the clamping assembly, the slip ring test object 38 can be stably clamped.

[0058] Example 5

[0059] As other embodiments of the present invention, the multi-channel control valve body assembly includes several interfaces 9 arranged on the mounting rail 8, each interface 9 can be connected to the corresponding gas generating tank 2 through a conduit, and several gas generating tanks 2 can respectively provide cold air, wind and sand, salt mist, hot air, acidic gas, and alkaline gas; the multi-channel control valve body assembly also includes a valve body structure arranged on the top of the upper cover shell 7, and the three adjacent interfaces 9 are respectively connected to each corresponding valve body structure through a connecting pipe 11, which is used to form different test environments when the valve body structure is switched.

[0060] Furthermore, the valve body structure includes a valve housing 60 and a top cover 10 that is detachably mounted on the valve housing 60; the valve housing 60 is connected to the top of the upper cover shell 7, and three channel holes 601 are provided on the top cover 10. A first valve plate 602 is provided on the lower surface of the channel hole 601 corresponding to the top cover 10, and a rotating plate 604 is provided in the middle of the top cover 10 through a rotating shaft, and the rotating shaft passes through the through hole where the top cover 10 is located and is connected to a handle 12. A switching slot 605 is provided on the rotating plate 604, and a second valve plate 603 is provided on the bottom inner portion of the valve housing 60; the second valve plate 603, the switching slot 605, and the first valve plate 602 share a common center of circle. When the switching slot 605 on the rotating plate 604 rotates, the through holes where the first valve plate 602 and the second valve plate 603 are located can coincide with the channel hole 601 in sequence, thereby switching the communication of the channel hole 601.

[0061] In this embodiment, based on embodiments 1 and 4, Figure 7 As shown, the electric lifting of the first hydraulic telescopic rod 29 and the angular deflection of the movable seat 27 can move the slip ring test object 38 located in the lower cover 14 horizontally and vertically, so that the lower cover 14 and the upper cover 7 at the corresponding position are sequentially docked, so that the slip ring test object 38 is placed in a closed test environment formed by the lower cover 14 and the upper cover 7, which is convenient for subsequent combined testing;

[0062] like Figure 1 、 2 As shown in 3, several interfaces 9 are set to connect to cold air, wind and sand, salt mist, hot air, acidic gas and alkaline gas in sequence, and the function of each valve body structure is matched. Figure 2 、 8As shown, there are three channel holes 601, and the first valve plate 602 and the second valve plate 603 correspond to the positions of the channel holes 601 one by one. The switching slot 605 is arc-shaped, and its length is set to act on two channel holes 601. Specifically, the three channel holes 601 are set in the counterclockwise direction as the first, second, and third. When the hand rotates the handle 12 counterclockwise, the switching slot 605 where the rotating plate 604 is located can be driven to rotate from the starting point. When the switching slot 605 acts on the first channel hole 601, it is a first position connection process. When the switching slot 605 continues to rotate counterclockwise and acts on the first and second channel holes 601, it is a connection process of the first and second position channel holes 601. When the switching slot 605 continues to rotate, it acts on the second and third channel holes 601, which is a connection process of the second and third position channel holes 601. When it continues to rotate again, it acts on the third channel hole 601, which is a connection process of the third position channel hole 601.

[0063] like Figure 3 , take three of the interfaces 9, if you connect cold air, wind and sand, and salt spray respectively, the corresponding valve body structure is switched clockwise in sequence, the first position connecting channel hole 601 can be connected to cold air, the first and second position channel holes 601 are connected to a mixture of cold air and wind and sand, the second and third position channel holes 601 are connected to a mixture of wind and sand and salt spray, and the third position channel hole 601 is connected to salt spray alone;

[0064] A closed test environment is formed by the lower cover 14 and the upper cover 7. In combination with the combined design of the plurality of interfaces 9 and the valve body structure, the test environment of various slip ring test objects 38 can be simulated, and a comprehensive test can be conducted on whether the wind turbine slip ring has good resistance to low temperature, high humidity, wind and sand, corrosion, salt spray, vibration, and stable performance.

[0065] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. The pitch slip ring test device based on the dynamic transmission bracket is characterized by: include: A base (1), a dynamic transmission bracket, the dynamic transmission bracket comprising a displacement adjustment bracket, and a multi-directional drive rod assembly assembled with the displacement adjustment bracket, wherein the execution end of the multi-directional drive rod assembly is connected to a friction conduction head assembly; and a lower cover (14) arranged on the dynamic transmission bracket, wherein a clamping assembly is arranged in the lower cover (14) for clamping and assembling a slip ring to be tested (38); and a detection conductive ring assembly arranged at the end of the lower housing (14) near the multi-directional drive rod assembly, one side of which is assembled and connected to the shaft end of the slip ring to be tested (38), and the other side of which can be docked with the friction conductive head assembly to test the friction torque; It also includes a test environment docking chamber provided on the base (1), the test environment docking chamber being placed above the lower cover (14) and capable of docking with the lower cover (14), and the test environment docking chamber being provided in multiple groups; Under the action of the dynamic transmission bracket, the slip ring to be tested (38) can be driven to perform dynamic testing, and the slip ring to be tested (38) in the lower cover (14) can also be driven to sequentially perform docking tests with multiple groups of test environment docking chambers, thereby achieving comprehensive testing under multiple environments.

2. The pitch slip ring testing device based on a dynamic transmission support according to claim 1 is characterized in that: The displacement adjustment frame includes a base plate (61), and a fixed seat (17) and a movable seat (27) respectively assembled on the ends of the base plate (61); The fixed seat (17) is arranged in an "L" shape, and a second meshing wheel (26) is provided in its transverse section, and a first meshing wheel (25) fixed on the movable seat (27), the first meshing wheel (25) and the second meshing wheel (26) are meshed and driven, and a second motor (54) is fixed on the base (1), and the output shaft of the second motor (54) passes through the through hole of the base (1) and is fixedly connected to the second meshing wheel (26); An adjustment long frame (28) is vertically provided at the end of the movable seat (27), and a first hydraulic telescopic rod (29) is provided at the top of the adjustment long frame (28), and an assembly connector is provided at the output end of the first hydraulic telescopic rod (29); A servo motor (4) is installed on the vertical section of the fixing seat (17), and the multi-directional drive rod assembly is assembled between the assembly connector and the servo motor (4); When the assembly connection piece moves horizontally and longitudinally, the multi-directional drive rod assembly adapts to changes in angle and length to accommodate the transmission between the servo motor (4) and the assembly connection piece.

3. The pitch slip ring testing device based on a dynamic transmission support according to claim 1 is characterized in that: The multi-directional drive rod assembly comprises a first universal joint unit and a second universal joint unit, wherein the first universal joint unit is connected to the end of the output shaft of the servo motor (4), the second universal joint unit is connected to the end of the assembly connector, and a shaft sleeve body (20) and a connecting shaft body (21) are respectively connected between the first universal joint unit and the second universal joint unit, and the connecting shaft body (21) and the shaft sleeve body (20) are spline-connected; The first universal joint unit includes a first universal joint head (18), a second universal joint head (19), and a first cross connecting shaft arranged between the first universal joint head (18) and the second universal joint head (19); The second universal joint unit includes a third universal joint head (22) and a fourth universal joint head (30), and a second cross connecting shaft disposed between the third universal joint head (22) and the fourth universal joint head (30).

4. The pitch slip ring testing device based on a dynamic transmission support according to claim 1, characterized in that: The assembly connecting member includes a first mounting member (31), the first mounting member (31) is in an inverted "U" shape and a vibration component is provided inside it, and an assembly block (32) connected to the vibration component. The friction conduction head component is provided on the assembly block (32) and is connected to the second universal joint unit; The vibration component includes a transmission member (43), the transmission member (43) is connected to the bottom of the first mounting member (31) through a spring (44), and a first working motor (40) mounted on the side wall of the first mounting member (31). The output shaft of the first working motor (40) penetrates through the first mounting member (31) and is connected to a rotating rod (41). An eccentric wheel (42) is mounted on the rotating rod (41), and the eccentric wheel (42) can act on the upper surface of the transmission member (43).

5. The pitch slip ring testing device based on a dynamic transmission support according to claim 1 is characterized in that: The detection conduction ring component includes a transmission ring body (37) rotating on the lower housing (14), and the transmission ring body (37) is composed of a transmission ring (371) and an extension ring (372) that are interconnected on both sides; and a locking member (39) screwed on the extension ring (372). When the locking member (39) screws into and acts on the execution end where the slip ring to be measured (38) is located, it can be used for the fixed connection between the transmission ring body (37) and the execution end where the slip ring to be measured (38) is located; A data collector is connected to the outer end of the extension ring (372), and the data collector includes a resistance meter and a torque sensor.

6. The pitch slip ring testing device based on a dynamic transmission support according to claim 5, characterized in that: The friction conduction head component includes an assembly shaft (34). One end of the assembly shaft (34) penetrates through the through hole where the assembly block (32) is located and is connected to the fourth universal joint head (30) of the second universal joint unit, and the other end of the assembly shaft (34) is fixedly connected to a conduction shaft (48); One end of the conduction shaft (48) far from the assembly shaft (34) extends into the detection conduction ring component and is fixed with an end block (52). Two relatively slidable friction drive blocks (50) are mounted on the end block (52), and a spline sleeve (36) spline-connected to the conduction shaft (48). A connecting rod (51) is hinged between the spline sleeve (36) and the friction drive block (50); and a second mounting member (33) is rotationally limited on the conduction shaft (48), and a hydraulic cylinder (63) is provided at the end of the second mounting member (33). The output end of the hydraulic cylinder (63) is connected to a telescopic rod body (35). When the telescopic rod body (35) expands and contracts, it is used to drive the position adjustment of the spline sleeve (36); When the outer wall of the friction drive block (50) expands and acts on the inner wall of the transmission ring body (37), friction drive can be formed; and a pressure sensor (53) is provided on the outer wall of the friction drive block (50) for measuring the pressure value formed when the pressure sensor (53) acts on the inner wall of the transmission ring body (37).

7. The pitch slip ring testing device based on a dynamic transmission support according to claim 5, characterized in that: The lower cover (14) is a semicircular cover structure, and the lower cover (14) is a semicircular cover structure and is fixed to the bottom of the assembly block (32) through an extension frame (49) at its bottom. The clamping assembly includes a clamping frame (46), and the inner wall of the clamping frame (46) is provided with an annularly distributed hydraulic telescopic cylinder (47); and a clamping head (471) provided at the end of each hydraulic telescopic cylinder (47).

8. The pitch slip ring testing device based on a dynamic transmission support according to claim 1, characterized in that: The test environment docking chamber comprises a bracket (3) and a placement rack (5) arranged on the top of the bracket (3); one end of the placement rack (5) is provided with a plurality of gas generating tanks (2); the other end of the placement rack (5) is fixedly connected to a mounting rail (8), and a plurality of docking chamber bodies arranged on the mounting rail (8), and a multi-channel control valve body assembly connected to each of the docking chamber bodies; Each set of docking chamber bodies includes a slide rail (713) and a slider (711) slidably mounted in the slide rail (713), a tension spring (712) connecting the slider (711) and the bottom end of the slide rail (713), an upper cover shell (7) fixed to the side wall of the slider (711), and sealing strips arranged on the lower cover shell (14) and the upper cover shell (7). When the displacement adjustment frame is in operation, the lower cover shell (14) can be docked with the upper cover shell (7) to form a closed test environment.

9. The pitch slip ring testing device based on a dynamic transmission support according to claim 8, characterized in that: The multi-channel control valve body assembly includes a plurality of interfaces (9) arranged on the mounting rail (8), each of the interfaces (9) can be connected to a corresponding gas generating tank (2) through a conduit, and the plurality of gas generating tanks (2) can respectively provide cold air, wind and sand, salt mist, hot air, acidic gas, and alkaline gas; The multi-channel control valve body assembly further comprises a valve body structure arranged on the top of the upper cover shell (7), and the three adjacent interfaces (9) are respectively connected to each corresponding valve body structure through a connecting pipe (11), and are used to form different test environments when the valve body structure is switched.

10. The pitch slip ring testing device based on a dynamic transmission support according to claim 9, characterized in that: The valve body structure comprises a valve housing (60) and a top cover (10) detachably mounted on the valve housing (60); The valve housing (60) is connected to the top of the upper housing (7), and three channel holes (601) are provided on the top cover (10). A first valve plate (602) is provided on the lower surface of the top cover (10) corresponding to the channel holes (601). A rotating plate (604) is provided in the middle of the top cover (10) through a rotating shaft, and the rotating shaft passes through the through hole where the top cover (10) is located and is connected to a handle (12). A switching slot (605) is provided on the rotating plate (604), and a second valve plate (603) is provided at the bottom of the valve housing (60); The second valve plate (603), the switching slot (605), and the first valve plate (602) share a common center. When the switching slot (605) on the rotating plate (604) rotates, the through holes where the first valve plate (602) and the second valve plate (603) are located can overlap with the channel hole (601) in sequence, thereby switching the communication of the channel hole (601).

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