A coupling dynamic balance test device

Abstract

The present invention relates to the field of dynamic balance test, specifically a coupling dynamic balance test device. It includes a mounting seat, a power motor, a support seat, a controller, a counterweight mechanism and a magnetic attraction linkage mechanism; a rotating shaft is rotatably arranged on the mounting seat, a vibration sensor is arranged at the top, and the two ends of the coupling to be tested are respectively connected to the output end of the power motor and the rotating shaft; the counterweight mechanism includes a plurality of groups of counterweight assemblies equidistantly and coaxially arranged on the rotating shaft, and the counterweight assembly includes a counterweight ring rotatably arranged on the rotating shaft and having a slideway parallel to the central axis, a slider slidably arranged at the slideway and having a groove at the outer end, an iron block arranged in the groove, and a limit mechanism arranged in the slideway and limiting the sliding range of the slider; the magnetic attraction linkage mechanism includes an electromagnet and a linkage assembly; a position adjustment mechanism and an orientation adjustment mechanism are arranged on the support seat. The present invention can conveniently call a counterweight assembly of the required weight, saving time and effort.

Description

Technical Field

[0001] The invention relates to the field of dynamic balance testing, in particular to a coupling dynamic balance testing device. Background Art

[0002] The couplings used in mining equipment need to meet a large load linkage capacity to transmit the power of the power unit to the driven structure through the coupling. The coupling needs to be dynamically balanced before it is put into use.

[0003] Chinese patent announcement number CN217687677U discloses a dynamic balancing measurement device for a coupling, which can change the load weight of the driven end according to actual needs, so as to adapt to the dynamic balancing measurement needs of couplings of different models and types, so as to obtain accurate data. It can also simulate the torsion of the driven end according to actual conditions, and can perform adaptability tests on the performance of different types of couplings, with high versatility.

[0004] However, the above technical solution has the following disadvantages: the weight block needs to be stored separately, and when it is needed, it needs to be manually moved out and mounted on the rectangular rod, which is time-consuming and labor-intensive. Summary of the invention

[0005] The purpose of the present invention is to solve the problems existing in the background technology and to provide a coupling dynamic balance test device, which can conveniently call a counterweight component of required weight, saving time and labor.

[0006] The technical solution of the present invention is a coupling dynamic balancing test device, comprising a mounting seat, a power motor, a support seat, a controller, a counterweight mechanism and a magnetic attraction linkage mechanism; a rotating shaft is rotatably arranged on the mounting seat, a vibration sensor is arranged on the top, and the two ends of the coupling to be tested are respectively connected to the output end of the power motor and the rotating shaft; the counterweight mechanism comprises a plurality of groups of counterweight assemblies equidistantly and coaxially arranged on the rotating shaft, the counterweight assembly comprises a counterweight ring rotatably arranged on the rotating shaft and having a slideway distributed parallel to the central axis, a slider slidably arranged on the slideway and having a groove at the outer end, an iron block arranged in the groove, and a limiting mechanism arranged in the slideway and limiting the sliding range of the slider, the outer peripheral surface of the rotating shaft has a plurality of abutment planes evenly distributed around the central axis, and the counterweight closest to the power motor A through threaded hole is radially arranged on the weight ring, and the counterweight ring is threadedly connected to a first threaded knob that can abut on the abutment plane through the threaded hole; the magnetic attraction linkage mechanism includes an electromagnet and a linkage component for adjusting the lateral position of the electromagnet. After the electromagnet is energized, when the linkage component adjusts the position of the electromagnet, the electromagnet attracts the iron block through the air through magnetic attraction, drives the slider to slide in the slideway on the counterweight ring and get stuck in the slideway of the next adjacent counterweight ring, connecting the required number of counterweight components; a position adjustment mechanism for adjusting the lateral position of the power motor and an azimuth adjustment mechanism for adjusting the azimuth of the mounting seat are arranged on the support seat; the controller is respectively controlled and connected with the power motor, the linkage component, the position adjustment mechanism and the azimuth adjustment mechanism, and controls the power on and off of the electromagnet.

[0007] Preferably, the slider is a "Z" shaped structure, with a first limit groove provided on the front side in the direction of rotation when the counterweight ring rotates, and a second limit groove provided on the bottom surface, the first limit groove and the second limit groove are both "U" shaped grooves, the limit mechanism includes a side plate connected to the end face of the slider and two groups of limit components respectively located on the inner sides of the first limit groove and the second limit groove, the side plate blocks the outside of the first limit groove and the second limit groove, the limit component includes a fixed column arranged on the inner wall of the slide, a limit platform slidably arranged on the fixed column and having a "V" shaped inclined surface at the outer end, and a first spring mounted on the outer periphery of the fixed column and with both ends respectively connected to the inner wall of the slide and the limit platform, and the moving directions of the limit platforms in the two groups of limit components are perpendicular.

[0008] Preferably, the rotating shaft includes multiple cylindrical parts and multiple triangular prism parts that are alternately distributed and connected in sequence, a bracket is provided on the mounting seat, a horizontally distributed hydraulic cylinder is provided on the bracket, a moving end of the hydraulic cylinder is connected to a moving rod, and a plurality of push rods corresponding to the triangular prism parts are arranged side by side at equal intervals at the front end of the moving rod, and the top surface of the push rod is a plane. When the push rod moves toward the direction of the triangular prism part until the top surface is in contact with the bottom plane of the triangular prism part, the push rod pushes the rotating shaft to rotate, and the rotating shaft drives the connected multiple groups of counterweight assemblies to rotate, and the iron block rotates to the extreme position at the top.

[0009] Preferably, the linkage assembly includes two pulleys rotatably arranged on a mounting seat, a third motor arranged on the mounting seat and driving a pulley to rotate forward and reversely, a belt sleeved on the two pulleys, a slide rail horizontally arranged on the mounting seat, and a movable frame slidably arranged on the slide rail and connected to the inner side of the belt, and the electromagnet is arranged on the movable frame.

[0010] Preferably, a plurality of groups of crimping assemblies that can abut against the outer circumferential surface of the counterweight ring are arranged side by side and equidistantly on the mounting seat, the crimping assembly includes a second spring, a sliding frame arranged on the mounting seat, and a pressure plate, a sliding column and a thrust plate connected in sequence in a direction away from the counterweight ring, the sliding column is slidably arranged on the sliding frame, the second spring is sleeved on the outer circumference of the sliding column and the two ends are respectively connected to the pressure plate and the sliding frame, the thrust plate has a guiding inclined surface inclined toward the counterweight ring, a belt-shaped pushing belt is arranged on the outer circumference of the belt, and the front end of the pushing belt has a pushing inclined surface that can push the thrust plate outward through the guiding inclined surface. After the thrust plate is pushed outward, the pressure plate in the crimping assembly is separated from the outer circumferential surface of the counterweight ring.

[0011] Preferably, it also includes a vibration switching mechanism located below the support seat, the vibration switching mechanism includes a base, a guide plate and a fixed plate arranged on the base, a second threaded knob rotatably arranged on the fixed plate, a plug post slidably arranged on the guide plate and threadedly connected to the second threaded knob, a positioning platform arranged at the bottom of the support seat and having a socket for inserting the plug post, and a plurality of groups of elastic components elastically supported between the support seat and the base, the elastic components including a sliding column arranged at the bottom of the support seat, a fixing cylinder arranged on the base and for sliding the sliding column, and a third spring sleeved on the outer periphery of the sliding column and with both ends respectively connected to the support seat and the fixing cylinder.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] The present invention can conveniently call the counterweight assembly of the required weight, saving time and effort. When calling the counterweight assembly, first tighten the first counterweight ring against the rotating shaft by tightening the first threaded knob, and the counterweight ring is linked to the rotating shaft. Then rotate the multiple counterweight rings to the position when the iron block is at the top, and align the slideways of the multiple counterweight rings. Then, the electromagnet is energized, and the electromagnet attracts the iron block on the slider through the air during the movement. Every time a counterweight ring passes through, the iron block in the counterweight ring is attracted out, and the iron block drives the slider to slide, and the slider is stuck in the slideway of the next counterweight ring, and the two counterweight rings are connected. According to this principle, multiple groups of counterweight assemblies required for the test are connected, and then the electromagnet is powered off. The power motor drives the coupling to drive the rotating shaft to rotate, and the rotating shaft drives multiple groups of counterweight assemblies to rotate, and a dynamic balance test under the corresponding load is performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0015] Figure 2 A partial structural cross-sectional view of an embodiment of the present invention;

[0016] Figure 3 A partial structural cross-sectional view of a push rod pushing the triangular prism portion of the rotating shaft to position the rotating shaft;

[0017] Figure 4 It is a partial structural cross-sectional view of a counterweight ring closest to the power motor, which is linked to the rotating shaft through the first threaded knob;

[0018] Figure 5 It is an exploded view of the structure of the bearing, mounting ring and other single weight rings;

[0019] Figure 6 It is a partial structural cross-sectional view of the slider sliding in the slideway;

[0020] Figure 7 The exploded view of the slider, the iron block and the structure for limiting the slider;

[0021] Figure 8 A schematic diagram of the local structure for adjusting the position of the electromagnet and separating the pressure plate from the corresponding counterweight ring;

[0022] Fig. 9 for Figure 8 A magnified view of the structure at center A;

[0023] Fig.10 It is a schematic diagram of the operating principle structure of the belt and the push belt;

[0024] Fig.11 A cross-sectional view of a structure for adjusting the position of a power motor, adjusting the orientation of a mounting seat, and switching a supporting seat between a fixed and elastic supporting state.

[0025] Figure numerals: 1, mounting seat; 2, vibration sensor; 3, power motor; 4, motor seat; 5, first motor; 6, lead screw; 7, moving platform; 8, support seat; 9, second motor; 10, worm; 11, worm wheel; 12, first gear; 13, mounting shaft; 14, second gear; 15, rotating shaft; 16, mounting cover; 17, sliding column; 18, fixing cylinder; 19, third spring; 20, base; 21, positioning platform; 22, plug column; 23, guide plate; 24, fixing plate; 25, second threaded knob; 26, counterweight ring; 261, slideway; 262, threaded hole; 263, operating slot; 264, first threaded knob button; 27, slider; 271, first limit groove; 272, second limit groove; 28, iron block; 29, fixed column; 30, limit platform; 31, first spring; 32, side plate; 33, bearing; 34, mounting ring; 35, rotating shaft; 351, cylindrical part; 3511, abutment plane; 352, triangular prism part; 36, moving rod; 37, push rod; 38, bracket; 39, hydraulic cylinder; 40, electromagnet; 41, moving frame; 42, slide rail; 43, third motor; 44, pulley; 45, belt; 46, pushing belt; 47, pressure plate; 48, sliding column; 49, thrust plate; 50, second spring; 51, sliding frame. DETAILED DESCRIPTION

[0026] Embodiment 1, as Figure 1-Figure 11 As shown, a coupling dynamic balancing test device proposed in this embodiment includes a mounting seat 1, a power motor 3, a support seat 8, a controller, a counterweight mechanism and a magnetic attraction linkage mechanism.

[0027] A rotating shaft 35 is rotatably arranged on the mounting base 1, and a vibration sensor 2 is arranged on the top. The two ends of the coupling to be tested are respectively connected to the output end of the power motor 3 and the rotating shaft 35, and the vibration sensor 2 is located near the coupling to be tested.

[0028] The counterweight mechanism includes a plurality of counterweight assemblies equidistantly and coaxially arranged on the rotating shaft 35, and the counterweight assemblies include a counterweight ring 26 rotatably arranged on the rotating shaft 35 and having a slideway 261 distributed parallel to the central axis, a slider 27 slidably arranged on the slideway 261 and having a groove at the outer end, an iron block 28 arranged in the groove, and a limit mechanism arranged in the slideway 261 and limiting the sliding range of the slider 27 to prevent the slider 27 from falling off the slideway 261. The counterweight ring 26 and the slider 27 are made of materials such as stainless steel that are not attracted by the electromagnet 40.

[0029] like Figure 1 and Figure 4As shown, the outer circumference of the rotating shaft 35 has a plurality of abutment planes 3511 evenly distributed around the central axis. A through threaded hole 262 is radially arranged on a counterweight ring 26 closest to the power motor 3, and the counterweight ring 26 is threadedly connected with a first threaded knob 264 that can abut on the abutment plane 3511 of the rotating shaft 35 through the threaded hole 262. By tightening the first threaded knob 264, the first counterweight ring 26 can be connected to the rotating shaft 35, ensuring that the first counterweight ring 26 can effectively rotate with the rotating shaft 35. In addition, an operating groove 263 can be arranged on the outer circumference of the counterweight ring 26, and the knob portion of the first threaded knob 264 is located inside the operating groove 263, which is convenient for user operation.

[0030] The magnetic attraction linkage mechanism includes an electromagnet 40 and a linkage assembly for adjusting the lateral position of the electromagnet 40. After the electromagnet 40 is energized, when the linkage assembly adjusts the position of the electromagnet 40, the electromagnet 40 attracts the iron block 28 through the air through the magnetic attraction force, driving the slider 27 to slide in the slideway 261 on the counterweight ring 26 and get stuck in the slideway 261 of the next adjacent counterweight ring 26. At this time, the slider 27 connects the two adjacent counterweight rings 26. According to this principle, the required number of counterweight assemblies are connected. This embodiment can connect the counterweight assemblies of the required number of corresponding weights as the load of the coupling transmission, rather than a load of any weight.

[0031] The support seat 8 is provided with a position adjustment mechanism for adjusting the lateral position of the power motor 3 and an orientation adjustment mechanism for adjusting the orientation of the mounting seat 1. According to the type of coupling to be tested, the orientation of the mounting seat 1 is adjusted by the orientation adjustment mechanism, and the rotating shaft 35 is adjusted to be aligned with the output end of the power motor 3, or the rotating shaft 35 is adjusted to be tilted relative to the output end of the power motor 3. Figure 1 and Figure 2 As shown, for the coupling schematically tested in this embodiment, before the test, the rotating shaft 35 needs to be adjusted to align with the output end of the power motor 3. When installing the coupling, the power motor 3 is first adjusted outward through the position adjustment mechanism, and then one end of the coupling is connected to one end of the rotating shaft 35, and then the power motor 3 is adjusted inward, and the other end of the coupling is connected to the output end of the power motor 3.

[0032] like Fig.11As shown, the position adjustment mechanism includes a first motor 5 arranged on a support seat 8, a screw rod 6 rotatably arranged on the support seat 8 and connected to the output end of the first motor 5, a moving platform 7 threadedly connected to the screw rod 6, and a motor base 4 connected to the moving platform 7 and slidably arranged on the support seat 8, and the power motor 3 is arranged on the motor base 4. The output end of the first motor 5 can rotate forward and reverse, and the screw rod 6 can be driven to rotate by the first motor 5, the screw rod 6 drives the moving platform 7 to move, and the moving platform 7 drives the motor base 4 to move, and the motor base 4 moves along a straight line. The self-locking performance of the threaded connection between the screw rod 6 and the moving platform 7 ensures the lateral position stability of the power motor 3 after the position is adjusted.

[0033] like Fig.11 As shown, the azimuth adjustment mechanism includes a second motor 9 and a mounting cover 16 arranged on the support seat 8, a worm 10 rotatably arranged in the mounting cover 16 and connected to the output end of the second motor 9, a mounting shaft 13 rotatably arranged on the support seat 8, a worm wheel 11 and a first gear 12 coaxially arranged on the mounting shaft 13, a rotating shaft 15 rotatably arranged on the support seat 8 and having a top end passing through the mounting cover 16 and connected to the bottom of the mounting seat 1, and a second gear 14 arranged on the rotating shaft 15, the worm 10 is meshedly connected with the worm wheel 11, and the first gear 12 is meshedly connected with the second gear 14. The output end of the second motor 9 can rotate forward and reversely, and can drive the worm 10 to rotate, the worm 10 drives the worm wheel 11 to rotate, the worm wheel 11 drives the first gear 12 to rotate through the mounting shaft 13, the diameter of the first gear 12 is smaller than the diameter of the second gear 14, the first gear 12 can drive the second gear 14 to rotate, and the second gear 14 drives the mounting seat 1 to rotate through the rotating shaft 15, thereby adjusting the azimuth of the mounting seat 1. The self-locking performance of the meshing connection between the worm 10 and the worm wheel 11 ensures the azimuth stability of the mounting seat 1 after the azimuth is adjusted.

[0034] The controller is respectively connected to the power motor 3 , the linkage assembly, the position adjustment mechanism and the azimuth adjustment mechanism, and controls the on and off of the electromagnet 40 .

[0035] like Figure 1 , Figure 2 , Figure 6 and Figure 7As shown, the slider 27 is a "Z"-shaped structure. When the slider 27 on one counterweight ring 26 slides and is stuck in the slideway 261 on the next counterweight ring 26, if the next counterweight ring 26 is not called, the slider 27 on the first counterweight ring 26 will not contact the slider 27 on the second counterweight ring 26, so as to prevent the slider 27 on the second counterweight ring 26 from being pushed into the next (third) counterweight ring 26. The slider 27 is provided with a first limiting groove 271 on the front side in the direction of rotation when the counterweight ring 26 rotates, and a second limiting groove 272 on the bottom surface. Both the first limiting groove 271 and the second limiting groove 272 are "U"-shaped grooves. The limiting mechanism includes a side plate 32 connected to the end face of the slider 27 and two groups of limiting components respectively located on the inner sides of the first limiting groove 271 and the second limiting groove 272. The limiting components include a fixed column 29 arranged on the inner wall of the slide 261, a limiting platform 30 slidably arranged on the fixed column 29 and having a "V"-shaped inclined surface at the outer end, and a first spring 31 sleeved on the outer periphery of the fixed column 29 and connected to the inner wall of the slide 261 and the limiting platform 30 at both ends. The moving directions of the limiting platforms 30 in the two groups of limiting components are vertical.

[0036] After the two sets of limit assemblies are installed in place, the side plate 32 is connected to the side of the slider 27, and the side plate 32 blocks the outside of the first limit groove 271 and the second limit groove 272, and blocks the two sets of limit assemblies. When the slider 27 slides from one end to the other end, it will push the limit platform 30 through the head of one end of the "U"-shaped groove. The limit platform 30 slides on the fixed column 29 and compresses the first spring 31 until the limit platform 30 is inserted into the other end of the "U"-shaped groove. When the limit platform 30 is inserted into the inner side of the two end heads of the "U"-shaped groove, it corresponds to the state that the slider 27 is completely received in the slideway 261 and slides outward and is stuck in the slideway 261 of the next counterweight ring 26. When the counterweight ring 26 rotates, due to the action of centrifugal force, the limit platform 30 will be stuck inside the two end heads of the "U"-shaped groove to prevent the slider 27 from being offset and prevent the connected counterweight assembly from being disconnected.

[0037] When the counterweight assembly is not called, the first threaded knob 264 is disengaged from the rotating shaft 35, and the power motor 3 drives the rotating shaft 35 to idle through the coupling, and the dynamic balance test during idling can be performed. When the counterweight assembly of the required load weight is called, the end of the first threaded knob 264 abuts on the rotating shaft 35, the controller controls the electromagnet 40 to be energized, and the linkage assembly adjusts the position of the electromagnet 40, and the electromagnet 40 moves from the top of the counterweight ring 26 closest to the power motor 3 to the top of the remaining counterweight rings 26. During the movement, the electromagnet 40 attracts the iron block 28 through the air through the magnetic attraction force, and the iron block 28 drives the slider 27 to slide. The slider 27 on the counterweight ring 26 is stuck in the slideway 261 of the next adjacent counterweight ring 26. According to this step, multiple groups of counterweight assemblies corresponding to the required load weight are connected in sequence. When the coupling is subjected to a dynamic balance test, the power motor 3 drives the rotating shaft 35 to rotate through the coupling, and the rotating shaft 35 drives multiple groups of counterweight assemblies to rotate. During the dynamic balancing test, the vibration data during the test is detected by the vibration sensor 2 .

[0038] This embodiment can conveniently call the counterweight assembly of the required weight, saving time and effort. When calling the counterweight assembly, first tighten the first counterweight ring 26 against the rotating shaft 35 by tightening the first threaded knob 264, and the counterweight ring 26 is linked with the rotating shaft 35. Then the multiple counterweight rings 26 are rotated to the position when the iron block 28 is at the top, and the slideways 261 of the multiple counterweight rings 26 are aligned. In this position, the iron block 28 can be attracted by the electromagnet 40. Then the electromagnet 40 is energized. The electromagnet 40 has magnetism. The position of the electromagnet 40 is adjusted by the linkage assembly. The electromagnet 40 attracts the iron block 28 on the slider 27 in the air. Every time it passes through a counterweight ring 26, the iron block 28 in the counterweight ring 26 is attracted out. The iron block 28 drives the slider 27 to slide, and the slider 27 is stuck in the slideway 261 of the next counterweight ring 26, and the two counterweight rings 26 are connected. According to this principle, multiple groups of counterweight assemblies required for the test are connected, and then the electromagnet 40 is powered off. The coupling is driven by the power motor 3 to drive the rotating shaft 35 to rotate, and the rotating shaft 35 drives multiple groups of counterweight components to rotate, so as to perform a dynamic balance test under a corresponding load.

[0039] When it is necessary to release the connection between multiple groups of counterweight assemblies, the electromagnet 40 is energized and moved in the reverse direction, that is, moved toward the first counterweight ring 26, and the slider 27 clamped on the next counterweight ring 26 is reset and stored in the slideway 261 of the counterweight ring 26 of the counterweight assembly.

[0040] Embodiment 2, as Figure 1-Figure 11As shown, a coupling dynamic balancing test device proposed in this embodiment, compared with the first embodiment, in this embodiment, the rotating shaft 35 includes a plurality of cylindrical parts 351 and a plurality of triangular prism parts 352 that are alternately distributed and sequentially connected, and the abutting plane 3511 is located on the outermost cylindrical part 351. A bracket 38 is provided on the mounting seat 1, and a horizontally distributed hydraulic cylinder 39 is provided on the bracket 38. The hydraulic cylinder 39 is controlled by a controller, and a moving rod 36 is connected to the moving end of the hydraulic cylinder 39. A plurality of push rods 37 corresponding to the triangular prism part 352 are arranged side by side at equal intervals at the front end of the moving rod 36. The top surface of the push rod 37 is a plane. When the push rod 37 moves toward the direction of the triangular prism part 352 until the top surface is in contact with the bottom plane of the triangular prism part 352, the push rod 37 pushes the rotating shaft 35 to rotate, and the rotating shaft 35 drives the connected multiple groups of counterweight components to rotate, and the iron block 28 rotates to the extreme position at the top, that is, the position where it can be attracted and driven by the electromagnet 40 in the air. After the dynamic balancing test of a load is completed, the iron block 28 on the counterweight ring 26 is not necessarily accurately located at the topmost limit position, and position correction is required at this time. During correction, the iron block 28 is first adjusted to a direction tilted from bottom to top away from the hydraulic cylinder 39. The hydraulic cylinder 39 drives the moving rod 36 to move, and the moving rod 36 drives the push rod 37 to move. The push rod 37 contacts the bottom surface of the triangular prism part 352 and pushes the triangular prism part 352 to rotate until the top surface of the push rod 37 fits the bottom surface of the triangular prism part 352. At this time, the rotating shaft 35 rotates to the right position, and the multiple counterweight rings 26 rotate to the right position, and the iron block 28 rotates to the top limit position that can be magnetically attracted by the electromagnet 40. The slideways 261 of the multiple counterweight rings 26 are aligned, and the required number of counterweight rings 26 can be connected by energizing the electromagnet 40 and adjusting the position, and then the push rod 37 is removed to prevent interference with the rotation of the rotating shaft 35. At this time, the dynamic balancing test of the coupling with other specifications of load can be carried out.

[0041] For the weight ring 26 rotatably mounted on the rotating shaft 35, a mounting ring 34 and a bearing 33 are first mounted on the cylindrical portion 351, and then a weight ring 26 is mounted, and then a bearing 33 and a mounting ring 34 are mounted. Both axial ends of the weight ring 26 have bearing grooves for the outer rings of the bearings 33 to be inserted into. The two bearings 33 play a role of rotation support on both sides of the weight ring 26, and the bearings 33 are protected by connecting the mounting ring 34 to the weight ring 26.

[0042] like Figure 8-Figure 10As shown, the linkage assembly includes two pulleys 44 rotatably arranged on the mounting seat 1, a third motor 43 arranged on the mounting seat 1 and driving one pulley 44 to rotate forward and reversely, a belt 45 sleeved on the two pulleys 44, a slide rail 42 horizontally arranged on the mounting seat 1, and a mobile frame 41 slidably arranged on the slide rail 42 and connected to the inner side of the belt 45. The electromagnet 40 is arranged on the mobile frame 41. The output end of the third motor 43 can rotate forward and reversely, and the third motor 43 drives a pulley 44 to rotate. The pulley 44 drives another pulley 44 to rotate through the belt 45. The belt 45 can drive the mobile frame 41 to move when moving, and the slide rail 42 guides the mobile frame 41 to move horizontally. The mobile frame 41 drives the electromagnet 40 to move, and adjusts the position of the electromagnet 40 to connect multiple groups of counterweight components.

[0043] like Figure 8-Figure 10 As shown, the mounting seat 1 is provided with multiple groups of crimping assemblies that can abut against the outer circumference of the counterweight ring 26 in parallel and equidistantly. The crimping assemblies include a second spring 50, a sliding frame 51 provided on the mounting seat 1, and a pressure plate 47, a sliding column 48 and a thrust plate 49 that are sequentially connected in a direction away from the counterweight ring 26. The sliding column 48 is slidably provided on the sliding frame 51. The second spring 50 is sleeved on the outer circumference of the sliding column 48 and its two ends are respectively connected to the pressure plate 47 and the sliding frame 51. The thrust plate 49 has a guiding inclined surface that is inclined toward the counterweight ring 26. A belt-shaped pushing belt 46 is provided on the outer circumference of the belt 45. The front end of the pushing belt 46 has a pushing inclined surface that can push the thrust plate 49 outward through the guiding inclined surface. After the thrust plate 49 is pushed outward, the pressure plate 47 in the crimping assembly is separated from the outer circumference of the counterweight ring 26. For the unused counterweight assembly, the counterweight ring 26 is pressed by the pressure plate 47 to prevent the unused counterweight assembly from rotating and affecting the dynamic balance test result.

[0044] For the called counterweight assembly, when adjusting the position of the electromagnet 40, the pushing belt 46 moves synchronously, and the front end of the pushing belt 46 pushes the thrust plate 49 away, so that the pressure plate 47 in the corresponding crimping assembly releases the crimping limit on the corresponding counterweight ring 26. At this time, the second spring 50 is compressed, and the counterweight ring 26 can be called and rotate smoothly. For the thrust plate 49 that is squeezed open by the pushing belt 46, the thrust plate 49 contacts the side of the pushing belt 46, and the pressure plate 47 in the crimping assembly does not contact the counterweight ring 26. Only when the pushing belt 46 moves in the opposite direction, the pushing of the thrust plate 49 will be released, and the second spring 50 will push the pressure plate 47 to move, and the pressure plate 47 will be crimped on the outer circumference of the counterweight ring 26 again.

[0045] In this embodiment, the pressure-connecting assembly is used to press and limit the unused counterweight assembly to prevent the corresponding counterweight assembly from rotating during the dynamic balance test, thereby preventing interference with the dynamic balance test process of the coupling. For the called counterweight assembly, the pressure-connecting limit of the corresponding pressure-connecting assembly on the counterweight ring 26 is automatically released by the pushing belt 46, so that the counterweight assembly rotates smoothly, ensuring the accuracy of the dynamic balance test result.

[0046] Embodiment three, as Figure 1-Figure 11 As shown, a coupling dynamic balancing test device proposed in this embodiment, compared with the first embodiment, in this embodiment, the dynamic balancing test device also includes a vibration switching mechanism located below the support seat 8, the vibration switching mechanism includes a base 20, a guide plate 23 and a fixed plate 24 arranged on the base 20, a second threaded knob 25 rotatably arranged on the fixed plate 24, a plug 22 slidably arranged on the guide plate 23 and threadedly connected to the second threaded knob 25, a positioning table 21 arranged at the bottom of the support seat 8 and having a socket for inserting the plug 22, and a plurality of groups of elastic components elastically supported between the support seat 8 and the base 20, the elastic components include a sliding column 17 arranged at the bottom of the support seat 8, a fixed cylinder 18 arranged on the base 20 and for the sliding column 17 to slide, and a third spring 19 sleeved on the outer periphery of the sliding column 17 and with two ends respectively connected to the support seat 8 and the fixed cylinder 18.

[0047] This embodiment can switch the support seat 8 between the fixed and elastic support states, so that dynamic balancing tests can be performed in two states. In the fixed state, the plug post 22 is inserted into the socket of the positioning platform 21, and the elastic component will not expand or contract. When it is necessary to switch to the elastic support state, the second threaded knob 25 is rotated, and the second threaded knob 25 drives the plug post 22 to move, and the plug post 22 is removed from the socket of the positioning platform 21. At this time, when the coupling dynamic balancing test is performed, the third spring 19 will elastically expand and contract, and the fixed cylinder 18 guides the sliding of the sliding column 17.

[0048] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A coupling dynamic balance test device, characterized in that: include: Power motor (3); A mounting seat (1) is provided with a rotating shaft (35) for rotation, a vibration sensor (2) is provided at the top, and two ends of the coupling to be tested are respectively connected to the output end of the power motor (3) and the rotating shaft (35); A counterweight mechanism, comprising a plurality of counterweight assemblies equidistantly and coaxially arranged on a rotating shaft (35), the counterweight assemblies comprising a counterweight ring (26) rotatably arranged on the rotating shaft (35) and having a slideway (261) distributed parallel to the central axis, a slider (27) slidably arranged on the slideway (261) and having a groove at the outer end, an iron block (28) arranged in the groove, and a limit mechanism arranged in the slideway (261) and limiting the sliding range of the slider (27); the outer peripheral surface of the rotating shaft (35) has a plurality of abutment planes (3511) evenly distributed around the central axis; a counterweight ring (26) closest to the power motor (3) is provided with a through threaded hole (262) in the radial direction; the counterweight ring (26) is threadedly connected to a first threaded knob (264) capable of abutting against the abutment plane (3511) through the threaded hole (262); A magnetic attraction linkage mechanism, comprising an electromagnet (40) and a linkage assembly for adjusting the lateral position of the electromagnet (40); after the electromagnet (40) is energized, when the linkage assembly adjusts the position of the electromagnet (40), the electromagnet (40) attracts the iron block (28) through the air by means of magnetic attraction, driving the slider (27) to slide in the slideway (261) on the counterweight ring (26) and snap into the slideway (261) of the next adjacent counterweight ring (26), thereby connecting the required number of counterweight assemblies; A support seat (8) on which a position adjustment mechanism for adjusting the lateral position of the power motor (3) and an orientation adjustment mechanism for adjusting the orientation of the mounting seat (1) are provided; A controller is respectively connected to the power motor (3), the linkage assembly, the position adjustment mechanism and the orientation adjustment mechanism, and controls the on and off of the electromagnet (40).

2. A coupling dynamic balancing test device according to claim 1, characterized in that: The slider (27) is a "Z"-shaped structure. A first limiting groove (271) is arranged on the front side surface in the direction of rotation when the counterweight ring (26) rotates, and a second limiting groove (272) is arranged on the bottom surface. The first limiting groove (271) and the second limiting groove (272) are both "U"-shaped grooves. The limiting mechanism includes a side plate (32) connected to the end surface of the slider (27) and two groups of limiting components located on the inner sides of the first limiting groove (271) and the second limiting groove (272), respectively. The side plate (32) 2) blocking the outside of the first limiting groove (271) and the second limiting groove (272), the limiting assembly comprises a fixed column (29) arranged on the inner wall of the slideway (261), a limiting platform (30) slidably arranged on the fixed column (29) and having a "V"-shaped inclined surface at the outer end, and a first spring (31) sleeved on the outer periphery of the fixed column (29) and having two ends respectively connected to the inner wall of the slideway (261) and the limiting platform (30), and the moving directions of the limiting platforms (30) in the two sets of limiting assemblies are perpendicular.

3. A coupling dynamic balance test device according to claim 2, characterized in that: The rotating shaft (35) comprises a plurality of cylindrical parts (351) and a plurality of triangular prism parts (352) which are alternately distributed and sequentially connected. A bracket (38) is arranged on the mounting seat (1). A horizontally distributed hydraulic cylinder (39) is arranged on the bracket (38). A movable end of the hydraulic cylinder (39) is connected to a movable rod (36). A plurality of push rods (37) corresponding to the triangular prism parts (352) are arranged side by side at equal intervals at the front end of the movable rod (36). The top surface of the push rod (37) is a plane. When the push rod (37) moves toward the triangular prism part (352) until the top surface is in contact with the bottom plane of the triangular prism part (352), the push rod (37) pushes the rotating shaft (35) to rotate, and the rotating shaft (35) drives the connected multiple counterweight assemblies to rotate, and the iron block (28) rotates to the extreme position at the top.

4. A coupling dynamic balance test device according to claim 3, characterized in that: The linkage assembly comprises two pulleys (44) rotatably arranged on the mounting seat (1), a third motor (43) arranged on the mounting seat (1) and driving one pulley (44) to rotate forward and reversely, a belt (45) sleeved on the two pulleys (44), a slide rail (42) horizontally arranged on the mounting seat (1), and a movable frame (41) slidably arranged on the slide rail (42) and connected to the inner side of the belt (45), and an electromagnet (40) is arranged on the movable frame (41).

5. A coupling dynamic balance test device according to claim 4, characterized in that: A plurality of crimping assemblies capable of abutting against the outer circumferential surface of the counterweight ring (26) are arranged side by side and equidistantly on the mounting seat (1), the crimping assemblies comprising a second spring (50), a sliding frame (51) arranged on the mounting seat (1), and a pressure plate (47), a sliding column (48) and a thrust plate (49) connected in sequence in a direction away from the counterweight ring (26), the sliding column (48) being slidably arranged on the sliding frame (51), and the second spring (50) being sleeved on the sliding column (48). ) and its two ends are respectively connected to the pressure plate (47) and the sliding frame (51), the thrust plate (49) has a guiding inclined surface inclined toward the counterweight ring (26), a belt-shaped pushing belt (46) is arranged on the outer peripheral surface of the belt (45), and the front end of the pushing belt (46) has a pushing inclined surface that can push the thrust plate (49) outward through the guiding inclined surface. After the thrust plate (49) is pushed outward, the pressure plate (47) in the crimping assembly is separated from the outer peripheral surface of the counterweight ring (26).

6. A coupling dynamic balance test device according to claim 1, characterized in that: The invention also includes a vibration switching mechanism located below the support seat (8), the vibration switching mechanism including a base (20), a guide plate (23) and a fixing plate (24) arranged on the base (20), a second threaded knob (25) rotatably arranged on the fixing plate (24), a plug post (22) slidably arranged on the guide plate (23) and threadedly connected to the second threaded knob (25), a positioning platform (21) arranged at the bottom of the support seat (8) and having a plug hole for inserting the plug post (22), and a plurality of groups of elastic components elastically supported between the support seat (8) and the base (20), the elastic components including a sliding column (17) arranged at the bottom of the support seat (8), a fixing cylinder (18) arranged on the base (20) and for sliding the sliding column (17), and a third spring (19) sleeved on the outer periphery of the sliding column (17) and having two ends respectively connected to the support seat (8) and the fixing cylinder (18).

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