High dynamic measurement equipment for electric drive shaft

Abstract

The invention provides an electric drive shaft high-dynamic measuring device, which is used for measuring a workpiece and comprises a measuring unit, a lifting unit, a placing table, a base, a small-value standard component and a large-value standard component, and the measuring unit, the lifting unit, the placing table, the small-value standard component and the large-value standard component are all arranged above the base. The measuring unit comprises a clamping assembly, a supporting floating assembly, an input shaft ball bearing outer end face measuring assembly, a middle shaft cone bearing outer end face measuring assembly, an output shaft cone bearing outer end face measuring assembly, a supporting floating fixing assembly and a floating mechanism. The device has the beneficial effects that the connection line area of the probe distribution on the shell combination surface needs to wrap the measurement probe distribution of the input shaft ball bearing a, the measurement probe distribution of the intermediate shaft ball bearing b and the measurement probe distribution of the output shaft ball bearing c, so that the measurement accuracy of the device can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of measuring equipment, and in particular to a high-dynamic measuring equipment for an electric drive shaft. Background Art

[0002] Electrical measuring instruments are measuring instruments that compare the measured electrical quantity or electrical parameters with electrical standards or provide accurate ratios. A large number of measuring instruments used in scientific research, value transfer and industrial testing are electrical measuring instruments. They are widely used and play an important role in the field of automotive engineering.

[0003] Application 1: A method and device for measuring the pad selection of a reducer (CN114838691A)

[0004] The present invention belongs to the technical field of assembly of drive motors for new energy vehicles, and is specifically a method and device for measuring the gasket selection of a reducer, comprising the following steps: first, three points are taken on the assembly surfaces of the reducer cover and the housing, and the xyz axis coordinates are measured. The surface normal vector and plane equation of the assembly surface are obtained through the surface equation. Then, three points are taken on the bearing surface and the bearing chamber of the reducer cover and the housing, and the xyz axis coordinates are measured. Combined with the normal vector of the corresponding assembly surface, the center coordinates of the bearing surface and the bearing chamber are obtained through the circle equation. Then, the distance from the center of the bearing surface and the bearing chamber to the corresponding assembly surface is calculated through the point-to-surface distance formula. Finally, the distance from the center of the bearing chamber to the assembly surface is subtracted from the distance from the corresponding bearing surface to the assembly surface and the reserved clearance to obtain the thickness of the intermediate shaft and differential gasket. Based on the above method, the problem of time-consuming and inaccurate operation of selecting the reducer bearing gasket can be solved.

[0005] Application 2: Transmission housing bearing hole end face distance measuring device and use method (CN116793289A)

[0006] The invention relates to a transmission housing bearing hole end face distance measuring device and a use method thereof, comprising a base, a stand mounted on the base, a lifting plate mounted on the front side of the stand, the lifting plate being driven by a lifting mechanism to move up and down relative to the stand, a support seat with an L-shaped structure arranged forwardly being mounted on the front side of the lifting plate, and a measuring mechanism being mounted on the support seat; the lifting mechanism drives the lifting plate, the measuring mechanism and the support seat downward; the bottom end of a pre-positioning pin approaches and penetrates into the opening of a positioning hole on the top surface of a housing to be measured below; the restriction of a locking mechanism on a floating seat is unlocked, and the pre-positioning pin extends into the positioning hole on the top surface of the housing to be measured to complete pre-positioning; a clamping mechanism hooks up and clamps the housing to be measured from bottom to top, and at the same time, the positioning pin of a profiling sleeve enters the positioning hole of the housing to be measured, at which time, a measuring head is triggered to measure the end face of the bearing hole to be measured of the housing to be measured, and automatic and rapid measurement of the distance between the end face of the bearing hole to be measured of the housing to be measured and the bottom surface of the housing to be measured is completed, which is accurate, reliable and stable, and greatly helps in gasket selection.

[0007] Application 3: Gearbox shaft measurement system and its measuring device (CN113295122A)

[0008] The present application discloses a gearbox shaft system measurement system and a measuring device thereof, the gearbox shaft system measurement device comprising: a workbench, the workbench can be moved between a working position and a non-working position; a moving plate, the moving plate is movably mounted on the workbench in the horizontal direction; and a measuring assembly, the measuring assembly is mounted on the moving plate, at least a part of the measuring assembly is movable in the vertical direction relative to the moving plate; in the working position, at least a part of the measuring assembly abuts against the end of the measured shaft of the measured gearbox, for measuring the shaft system parameters of the measured shaft. According to the present application, a shaft system measurement scheme for automobile gearboxes with high applicability is provided.

[0009] Application 4: A measuring device for the dynamic height of the top bearing and the joint surface of a gearbox differential (CN214250925U)

[0010] The utility model discloses a measuring device for the dynamic height of the top bearing and the joint surface of a gearbox differential, comprising: a support module, a driving module and a counterweight module; the support module comprises a flexible driving head, a driving rod, a connecting rod, a top ball, a sliding rod, a conical pressure head, a spherical pressure head and a supporting plate, the flexible driving head is arranged at the bottom end of the driving rod; the connecting rod is arranged in the driving rod; the top ball is arranged at the bottom end of the connecting rod, and the sliding rod is arranged at the top end of the connecting rod; the supporting plate is connected to the top end of the sliding rod; the driving module drives the driving rod to rotate; the counterweight module comprises a mounting seat, a cylinder, a slider, a support plate and a counterweight block, the slider is slidably connected to the mounting seat; the slider is connected to the cylinder; the support plate is connected to the slider, and the support plate is located between the counterweight block and the supporting plate. Through the above-mentioned method, the utility model can obtain a more stable measurement value, improve the measurement efficiency and measurement accuracy, and can change whether to increase the counterweight force through the counterweight module according to actual needs.

[0011] Application 1 mainly describes the principles of measurement and calculation and the composition of the mechanism, Application 2 mainly describes the method of mechanical equipment measurement, Application 3 mainly describes that the X / Y deviation is mainly driven and positioned by a servo motor, and Application 4 mainly describes how to drive and load force during measurement. Such equipment is relatively expensive and has low accuracy. Summary of the invention

[0012] In order to overcome the above problems existing in the prior art, the present invention provides a high-dynamic measurement device for an electric drive shaft.

[0013] The present invention discloses a high-dynamic measurement device for an electric drive shaft, which is used for measuring a workpiece. The device comprises a measuring unit, a lifting unit, a placing table, a base, small-value standard parts and large-value standard parts. The measuring unit, the lifting unit, the placing table, the small-value standard parts and the large-value standard parts are all arranged above the base. The measuring unit comprises a clamping assembly, a supporting floating assembly, an input shaft ball bearing outer end face measuring assembly, an intermediate shaft tapered bearing outer end face measuring assembly, an output shaft tapered bearing outer end face measuring assembly, a supporting floating fixing assembly and a floating mechanism.

[0014] On this basis, the supporting floating assembly includes a supporting block 1, a positioning pin sleeve 1, a positioning pin sleeve 2, a probe 1, a measuring fixed plate, a floating plate, an adjusting block 1, a pin sleeve 1, a pin sleeve 2, a supporting seat 1 and a measuring mounting seat. The upper end face of the supporting block 1 contacts the workpiece, and the lower end face of the supporting block is installed on the upper end face of the floating plate. The supporting block 1 is fixed with a positioning pin sleeve 1 and a positioning pin sleeve 2 by a top screw, and the supporting block 1 is respectively installed with a probe 1, and the lower end face of the measuring fixed plate is installed with a pin sleeve 1 and a pin sleeve 2. The floating plate and the measuring fixed plate are connected by a floating mechanism, the lower end face of the supporting seat is installed on the upper end face of the floating plate, and the lower end face of the measuring mounting seat is installed on the upper end face of the supporting seat 1.

[0015] On this basis, the clamping assembly includes a double-force cylinder, a connecting seat 1, a cylinder mounting seat 1, a pressure block, a connecting rod 2, a pull rod, a connecting rod 3, a connecting rod 1, a rotating shaft 2, a rotating shaft 1 and a rotating shaft 3. The lower end face of the connecting seat is installed on the upper end face of the floating plate, one is installed on each side, the lower end face of the cylinder mounting seat is installed on the upper end face of two connecting seats 1, the upper end face of the Double-force cylinder is installed on the lower end face of the cylinder mounting seat, and the lower end face of the pull rod is installed on the end face of the piston rod of the Double-force cylinder. The left and right connecting rods 2 are connected to the left and right ends of the pull rods through the rotating shaft 3, and the other rotating shaft 3 connects the pressure block to the connecting rod 2. The left and right connecting rods 1 are respectively connected to the pressure block and the left and right sides of the cylinder mounting seat 1 through two rotating shafts 2, and the left and right connecting rods 3 are respectively connected to the left and right sides of the two connecting rods 1 through the rotating shaft 1.

[0016] On this basis, the floating mechanism includes a floating fixed plate, a thrust bearing 1, a connecting plate 1, a connecting plate 2, a thrust bearing 2, a sleeve 1, a disc spring, a connecting plate 3, a floating shaft and bolts. The lower end surface of the floating fixed plate is placed on the upper end surface of the measuring fixed plate, the upper end cover plate of the thrust bearing 1 is reversed and placed as a whole on the upper end surface of the floating fixed plate, the lower end surface of the connecting plate is connected to the reverse cover plate of the thrust bearing 1, the upper end surface of the connecting plate 1 is connected to the lower end surface of the floating plate, the lower end surface of the connecting plate 2 is placed on the upper end surface of the floating plate, the lower end cover plate of the thrust bearing 2 is reversed and connected to the upper end surface of the connecting plate 2, the floating shaft is sequentially installed in the holes of the thrust bearing 2, the connecting plate 2, the floating plate, the connecting plate 1, the thrust bearing 1 and the floating fixed plate, the sleeve is inserted into the floating shaft, the disc spring is inserted into the shaft diameter of the floating shaft and contacts with the upper end surface of the sleeve 1, the lower end surface of the connecting plate 3 contacts with the disc spring, and the bolt passes through the inner hole of the floating shaft and is locked with the measuring fixed plate.

[0017] On this basis, the input shaft ball bearing outer end face measurement assembly includes a bearing sleeve, a clamping block 1, a connecting block 1, a probe 2, an L connecting block, a sleeve 1, a counterweight floating shaft 1, a counterweight connecting plate 1, a counterweight block 1, a buffer pad 1, a fixed shaft 1, a floating shaft 1, a linear bearing 1, a sleeve 2, a limit shaft 1, a linear bearing 2, a retaining spring 1 and a fixed shaft 2. The clamping block 1 and the connecting block 1 are connected through a fixed shaft 1, a semicircular boss of the clamping block is in contact with a semicircular groove of the connecting block, the bearing sleeve and the connecting block 1 are connected through a top screw, a lower end face of the sleeve is mounted on the upper end face of the measuring mounting seat, the linear bearing 1, the sleeve 2 and the linear bearing 2 are installed in a hole of the sleeve 1, and the The retaining spring 1 is inserted into the sleeve 1, the buffer pad 1 is installed on the upper end surface of the sleeve 1, the floating shaft 1 is fixed to the connecting block 1 through the fixed shaft 2, the floating shaft 1 passes through the linear bearing 1, the sleeve 2, the linear bearing 2 and the inner hole of the buffer pad 1 in sequence, the lower end surface of the counterweight connecting plate is fixed to the upper end surface of the floating shaft 1, the counterweight floating shaft 1 is connected to the counterweight connecting plate 1, the counterweight block 1 is loaded onto the upper end surface of the counterweight connecting plate 1, the L connecting blocks are respectively installed on the three mounting surfaces on the side of the sleeve 1, the probe 2 is respectively fixed to the L connecting blocks, the probe of the probe 2 is in contact with the clamping block 1, the limiting shaft 1 passes through the floating shaft 1, the sleeve 2 and the sleeve 1, and is used to limit the floating range.

[0018] On this basis, the output shaft tapered bearing outer end surface measuring assembly includes a shift fork, a quick-change shaft, a floating rotating shaft, a clamping block 2, a spring 1, an adjusting bolt, a limit bolt, a probe connecting plate, a probe 3, a connecting plate 4, a counterweight floating shaft 2, a counterweight linear bearing, a buffer pad 2, a counterweight support shaft, a reducer mounting seat, a reducer, a servo motor 1, a counterweight block, a floating connecting sleeve, a counterweight connecting sleeve, a support shaft, a detection ring, a linear bearing 3, a connecting bolt 1, a clamping block 3, a floating shaft 2, a connecting plate 4, a deep groove ball bearing 1, a flat key, a sleeve 2, a sleeve 3, a deep groove ball bearing 2, a spring 2, a connecting seat 2, a connecting seat 3, a coupling 1, a bushing 1, a mounting seat, a bushing 2, a sleeve 4, a counterweight connecting plate 2, a floating sleeve and a connecting bolt 2, and the shift fork The detection ring is installed on the floating rotating shaft, the bushing 2 is installed in the sleeve 4, the sleeve 4 is installed in the sleeve 3, the two flat keys are respectively installed in the grooves on both sides of the floating rotating shaft, the connecting plate 4 is installed on the mounting seat for positioning the deep groove ball bearing 1, the probe connecting plate is installed on the floating plate, the probe 3 is installed on the probe connecting plate, the counterweight floating shaft 1 passes through the linear bearing 3, the bushing 1 is installed in the connecting seat 2, the connecting seat 2 is connected to the sleeve 3, the deep groove ball bearing 2 and the deep groove ball bearing 1 are respectively installed in the mounting holes on the upper end face and the lower end face of the mounting seat, the sleeve 3 is inserted into the inner diameters of the deep groove ball bearing 1 and the deep groove ball bearing 2, and the floating rotating shaft Install it into sleeve three, the two flat keys are inserted into the slots in sleeve three, the bushing two is installed from the lower end of the floating rotating shaft, the sleeve four is fixed to sleeve three, the sleeve two is installed from the upper end of the floating rotating shaft, the spring two is installed from the upper end of the floating rotating shaft, the bushing one is installed from the upper end of the floating rotating shaft, the connecting seat two is fixed to sleeve three, the mounting seat is installed on the upper end surface of the measuring mounting seat, the connecting seat three is connected to the connecting seat two, the coupling one is connected to the shaft on the connecting seat three, the lower end surface of the support shaft is installed on the upper end surface of the measuring mounting seat, the lower end surface of the reducer mounting seat is installed on the upper end surface of the support shaft, the support shaft is installed on the measuring mounting seat, the reducer is installed in coupling one, and is connected to the upper end surface of the reducer mounting seat Then, the servo motor 1 is installed on the reducer, the sleeve 2 passes through the sleeve 3, and is used for limiting the shift fork. The mounting surface of the counterweight linear bearing is connected to the upper end surface of the measuring mounting seat, the upper end surface of the counterweight floating shaft 2 is installed on the lower end surface of the counterweight connecting plate 2, the lower end of the counterweight floating shaft 2 is sleeved into the buffer pad 2, the counterweight floating shaft 2 is installed into the counterweight linear bearing, the upper end surface of the connecting plate 4 is installed on the lower end surface of the counterweight floating shaft 2, the lower end surface of the counterweight support shaft is installed on the upper end surface of the counterweight connecting plate 2, the counterweight block is loaded onto the upper end surface of the counterweight support shaft, the floating connecting sleeve is connected to the clamping block 3 by a top screw, the floating shaft 2 is installed on the counterweight connecting sleeve by a top screw, and the counterweight connecting sleeve and the floating connecting sleeve are connected by a limiting bolt.The second pressing block is installed on the floating sleeve, the floating sleeve is connected to the floating connecting sleeve by connecting bolts 2, the first spring is installed on the upper end surface of the floating sleeve, and the first spring is connected to the floating connecting sleeve by adjusting bolts.

[0019] On this basis, the supporting floating fixed assembly includes a positioning pin 1, a sleeve seat, a cylinder, a sensing block, a limiting bolt 1, a bushing, a floating joint and a limiting bolt 2. The two bushings are respectively installed at both ends of the sleeve seat, the floating joint is connected to the cylinder piston rod, the positioning pin 1 is connected to the floating joint and is inserted into the inner holes of the two bushings, the cylinder is installed on the upper end surface of the sleeve seat, the limiting bolt 1 and the limiting bolt 2 are respectively installed on the upper and lower sides of the sleeve seat, the sensing block is installed on the upper end of the cylinder piston rod, and the lower end surface of the sleeve seat is installed on the floating plate.

[0020] On this basis, the placement table includes adjustment block 2, frame 1, support column, support block 2, diamond locating pin, circular locating pin, support block 3 and support block 4. The adjustment block 2 and frame 1 are installed on the base, the lower end of the support column is installed on the upper end surface of frame 1, the lower end surface of support block 2 is installed on the upper end surface of the support column, the lower end surfaces of the diamond locating pin and the circular locating pin are installed on the upper end surface of frame 1, and the support block 3 and support block 4 are installed on the upper end surface of frame 1.

[0021] On this basis, the lifting unit includes a frame 2, a lifting platform, a connecting seat 4, a floating joint, a cylinder mounting seat 2, a screw, a connecting seat 6, a pin, a connecting seat 5, a self-locking cylinder, a sheet metal part, a drag chain, a coupling 2, a servo motor 2, a drag chain sheet metal part, a slide rail mounting seat, a slide rail, a screw connecting seat 1, a slider, a screw nut mounting seat, a screw nut, a screw connecting seat 2 and a motor mounting seat. The frame 2 is installed on the base, the slide rail mounting seat is installed on the frame 2, the slide rail is installed on the slide rail mounting seat, the motor mounting seat is installed on the slide rail mounting seat, the screw connecting seat 1 is installed on the motor mounting seat, the measuring fixing plate and the adjusting block 1 are installed on the upper end surface of the lifting platform, the screw is inserted into the screw connecting seat 1, the screw nut is installed on the screw, and the screw nut mounting seat is installed on the screw nut The lead screw connecting seat 2 is installed into the lower end of the lead screw and is fixed by a retaining spring, the lead screw connecting seat 2 is installed on the frame 2, the slider is installed on the slide rail, the drag chain sheet metal is installed on the frame 2, the cylinder mounting seat 2 is installed on both sides of the frame 2, the self-locking cylinders are respectively installed on the cylinder mounting seat 2, the floating joint is installed on the self-locking cylinder piston rod, the sheet metal is installed on the lifting platform, the lifting platform is installed on the slider and the lead screw nut mounting seat, the connecting seat 4 is installed on the lifting platform and connected to the floating joint, the coupling 2 is installed on the upper end of the lead screw, the servo motor 2 is installed on the coupling and connected to the motor mounting seat, the connecting seat 6 is installed on the frame 2, the connecting seat 5 is installed on the frame 2, the pin is placed in the connecting seat 5, and the drag chain is installed on the sheet metal and the drag chain sheet metal.

[0022] On this basis, the large-value standard parts include a base, a positioning sleeve, a buffer pad three, a handle, a joint surface support block, a positioning pin two, an input shaft standard block, an intermediate shaft standard block, an output shaft standard block and a sensor sensing plate. The two positioning sleeves are installed on the lower end surface of the base, the buffer pad three is installed on the lower end surface of the base, the sensor sensing plate is installed on the lower end surface of the base, the handle is installed on both sides of the base, the joint surface support block is installed on the upper end surface of the base, the input shaft standard block, the intermediate shaft standard block and the output shaft standard block are installed on the upper end surface of the base, and the positioning pin two is installed on the upper end surface of the base.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) The present invention can improve the accuracy of equipment measurement by requiring that the connection area of ​​the probe distribution on the housing joint surface covers the measurement probe distribution of the input shaft ball bearing a, the measurement probe distribution of the intermediate shaft ball bearing b, and the measurement probe distribution of the output shaft ball bearing c;

[0025] (2) The present invention adopts a connecting rod self-locking mechanism to clamp the workpiece through the shell clamping, and two in-position sensors are used for one clamping induction and one for the opening induction. The self-locking function is realized by the self-locking function of the connecting rod mechanism;

[0026] (3) The present invention, through the method of measuring the input shaft and the intermediate shaft, adopts the up and down floating function of the input shaft ball bearing outer end surface measurement component, and can also perform universal floating, and the floating angle is 2°, so as to ensure that the clamping block 1 is always in contact with the outer end surface of the bearing, and the preload force is applied to the bearing through the loading force of the counterweight block 1, and the accuracy of the measurement using the probe 2 is improved;

[0027] (4) The present invention uses a support block 1 made into an integral surface to prevent impurities and dust on the shell joint surface from being found at this work station, thereby avoiding subsequent workpiece quality risks; the support floating assembly can float up and down in the Z direction, and the X / Y plane floats ±1mm, ensuring the positioning accuracy of the floating assembly when pressing the workpiece; the adjustment block 1 uses two bolts to adjust the support floating assembly in the X / Y direction during equipment debugging, one of which is tightened and the other is pushed, and the two disc springs play a role in floating up and down in the Z axis. Due to the force formed by the disc springs, the bolts have an anti-loosening function;

[0028] (5) The present invention couples the differential straight shaft in the output shaft tapered bearing outer end surface measuring assembly by floating up and down and rotating the output shaft fork, which starts to rotate after coupling, and is loaded onto the outer end surface of the tapered bearing of the output shaft tapered bearing outer end surface measuring assembly through a counterweight block, and is connected to the semicircular boss of the third pressure block and the semicircular groove of the second floating shaft through a limit of 2° for universal floating. The fork is made of 5Cr4W3Mo2V material, and the heat treatment hardness reaches HRC42-46, thereby improving the service life;

[0029] (6) In the present invention, the self-locking cylinder is used to balance the total weight of the lifting platform and the installed unit, which increases the service life of the screw and reduces the torque and power of the servo motor 2; the large value standard parts are used to verify the stability, accuracy, repeatability and reproducibility of the equipment. The installation method of the small value standard parts is consistent with that of the large value standard parts. The small value standard parts are mainly used for measurement benchmarks, workpiece 1 measurement calculations, equipment verification and other functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the high dynamic measurement device for electric drive shaft of the present invention;

[0031] Figure 2 It is the workpiece composition structure diagram;

[0032] Figure 3 is the height of the workpiece to be measured;

[0033] Figure 4It is the schematic diagram of the probe arrangement;

[0034] Figure 5 This is the structural diagram of the measuring unit of the present invention

[0035] Figure 6 This is a schematic diagram of workpiece positioning and clamping of the present invention;

[0036] Figure 7 It is a diagram of the clamping assembly mechanism of the present invention;

[0037] Figure 8 This is a structural diagram of the supporting floating assembly of the present invention from one perspective;

[0038] Fig. 9 This is another perspective structural diagram of the supporting floating assembly of the present invention;

[0039] Fig.10 is a side view of the supporting floating assembly of the present invention;

[0040] Fig.11 This is a structural diagram of the input shaft ball bearing outer end surface measurement assembly of the present invention;

[0041] Fig.12 It is a side view of the input shaft ball bearing outer end surface measurement assembly of the present invention from one viewing angle;

[0042] Fig.13 It is a side view from another angle of the input shaft ball bearing outer end surface measurement assembly of the present invention;

[0043] Fig.14 This is a front structural diagram of the output shaft tapered bearing outer end surface measurement assembly of the present invention;

[0044] Fig.15 This is a reverse structural diagram of the output shaft tapered bearing outer end surface measuring assembly of the present invention;

[0045] Fig.16 It is a side view of the output shaft tapered bearing outer end surface measurement assembly of the present invention;

[0046] Fig.17 is a side view of the supporting floating fixing assembly of the present invention;

[0047] Fig.18 is a side view of the supporting floating fixing assembly of the present invention;

[0048] Fig.19 It is a structural diagram of the placement table of the present invention;

[0049] Fig. 20 This is a front structural diagram of the descending unit of the present invention;

[0050] Fig.21 It is a reverse structural diagram of the lifting unit of the present invention;

[0051] Fig. 22 is a front view of the lifting unit of the present invention;

[0052] Fig.23 It is the structural diagram of the standard parts of the present invention;

[0053] In the figure: 1. Workpiece, 2. Measuring unit, 3. Lifting unit, 4. Placement table, 5. Base, 6. Small value standard part, 7. Large value standard part,

[0054] 1-1, housing, l-2, input shaft, 1-3, intermediate shaft, 1-4, output shaft, 101, positioning one, 102, positioning two,

[0055] 2-1, clamping assembly, 2-1a, clamping assembly one, 2-1b, clamping assembly two, 2-1c, clamping assembly three, 2-1d, clamping assembly four,

[0056] 2-2, support floating assembly, 2-3, input shaft ball bearing outer end surface measurement assembly, 2-4, intermediate shaft tapered bearing outer end surface measurement assembly, 2-5, output shaft tapered bearing outer end surface measurement assembly, 2-6, support floating fixed assembly, 2-7, floating mechanism, 2-101, double force cylinder, 2-102, connecting seat one, 2-103, cylinder mounting seat one, 2-104, sensor bracket one, 2-105, in-position sensor one, 2-106, pressure block, 2-107, connecting rod two, 2-108, pull rod, 2-109, connecting rod three, 2-110, connecting rod one, 2-111, rotating shaft two, 2-112, rotating shaft one, 2-113, rotating shaft three,

[0057] 2-201, support block 1, 2-202, positioning pin sleeve 1, positioning pin sleeve 2, 2-203, 2-204, probe 1, 2-205, measurement fixing plate, 2-206, floating plate, 2-207, adjustment block 1, 2-208, pin sleeve 1, 2-209, pin sleeve 2, 2-7, floating mechanism, 2-210, support seat 1, 2-211, measurement mounting seat,

[0058] 2-301, bearing sleeve, 2-302, clamping block 1, 2-303, connecting block 1, 2-304, probe 2, 2-305, L connecting block, 2-306, sleeve 1, 2-307, counterweight floating shaft 1, 2-308, counterweight connecting plate 1, 2-309, counterweight block 1, 2-310, buffer pad 1, 2-311, fixed shaft 1, 2-312, floating shaft 1, 2-313, linear bearing 1, 2-314, sleeve 2, 2-315, limit shaft 1, 2-316, linear bearing 2, 2-317, retaining spring 1, 2-318, fixed shaft 2,

[0059] 2-501, shift fork, 2-502, quick change shaft, 2-503, floating rotating shaft, 2-504, clamping block 2, 2-505, probe connecting plate 1, 2-506, probe connecting plate 2, 2-507, probe connecting plate 3, 2-508, probe 3, 2-509, spring 1, 2-510, adjustment bolt, 2-511, limit bolt, 2-512, floating connecting sleeve, 2-513, counterweight connecting sleeve, 2-514, connecting plate 4, 2-515, counterweight Heavy floating shaft 2, 2-516, sensor 1, 2-517, counterweight linear bearing, 2-518, buffer pad 2, 2-519, counterweight support shaft, 2-520, reducer mounting seat, 2-521, reducer, 2-522, servo motor 1, 2-523, counterweight block, 2-524, sensor 2, 2-525, sensor bracket 2, 2-526, support shaft, 2-527, sensor bracket 3, 2-528, sensor 3, 2-529, sensor bracket 4 , 2-530, sensor four, 2-531, sensor bracket five, 2-532, sensor five, 2-533, sensor bracket six, 2-534, sensor six, 2-535, sensor bracket seven, 2-536, sensor seven, 2-537, sensor bracket eight, 2-538, detection ring, 2-539, connecting bolt, 2-540, clamping block three, 2-541, floating shaft two, 2-542, connecting plate four, 2-543, deep groove ball bearing one, 2-54 4. Flat key, 2-545, sleeve 2, 2-546, sleeve 3, 2-547, deep groove ball bearing 2, 2-548, spring 2, 2-549, connecting seat 2, 2-550, connecting seat 3, 2-551, coupling 1, 2-552, bushing 1, 2-553, mounting seat, 2-554, linear bearing 3, 2-555, bushing 2, 2-556, sleeve 4, 2-557, counterweight connecting plate 2, 2-558, floating sleeve, 2-559, connecting bolt,

[0060] 2-601, positioning pin 1, 2-602, sleeve seat, 2-603, cylinder, 2-604, sensor 8, 2-605, sensor bracket 9, 2-606, induction block, 2-607, limit bolt 1, 2-608, bushing, 2-609, floating joint, 2-610, limit bolt 2, 2-611, sensor 9,

[0061] 2-701, floating fixed plate, 2-702, thrust bearing 1, 2-703, connecting plate 1, 2-704, connecting plate 2, 2-705, thrust bearing 2, 2-706, bushing 1, 2-707, disc spring, 2-708, connecting plate 3, 2-709, floating shaft, 2-710, bolts,

[0062] 3-1, frame 2, 3-2, lifting platform, 3-3, connection seat 4, 3-4, floating joint, 3-5, cylinder mounting seat 2, 3-6, screw, 3-7, connection seat 6, 3-8, sensor bracket 15, 3-9, sensor 13, 3-10, latch, 3-11, connection seat 5, 3-12, sensor 12, 3-13, sensor bracket 14, 3-14, self-locking cylinder, 3-15, sheet metal, 3-16, drag chain, 3-17, coupling 2, 3-18, servo motor Machine 2, 3-19, drag chain sheet metal, 3-20, slide rail mounting seat, 3-12, sensor bracket 16, 3-22, sensor 14, 3-23, sensor 15, 3-24, sensor bracket 17, 3-25, sensor 16, 3-26, sensor induction bracket, 3-27, slide rail, 3-28, screw connection seat 1, 3-29, slider, 3-30, screw connection seat 2, 3-32, screw nut mounting seat, 3-31, screw nut, 3-33, motor mounting seat,

[0063] 4-1, adjustment block 2, 4-2, rack 1, 4-3, support column, 4-4, support block 2, 4-5, diamond positioning pin, 4-6, round positioning pin, 4-7, through-beam sensor, 4-8, sensor bracket 11, 4-9, sensor bracket 10, 4-10, support block 3, 4-11, support block 4, 4-12, sensor 11, 4-13, sensor 10, 4-14, sensor bracket 13, 4-15, sensor bracket 12,

[0064] 7-1, base, 7-2, positioning sleeve, 7-3, buffer pad three, 7-4, handle, 7-5, joint surface support block, 7-6, positioning pin two, 7-7, input shaft standard block, 7-8, intermediate shaft standard block, 7-9, output shaft standard block, 7-10, sensor sensing plate. DETAILED DESCRIPTION

[0065] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0066] refer to Figure 1-Figure 23 A workpiece 1 includes a housing 1-1, an input shaft 1-2, an intermediate shaft 1-3, and an output shaft 1-4. The description of this application is only an example. This equipment is applicable to the measurement of other different electric drives. By measuring and calculating, the distance Ha from the housing 1-1 joint surface to the outer end surface of the input shaft ball bearing a, the distance Hb from the housing 1-1 joint surface to the outer end surface of the intermediate shaft tapered bearing b, and the distance Hc from the housing 1-1 joint surface to the outer end surface of the output shaft tapered bearing c are obtained. This process is the most important step in the production process of electric drives. When measuring the outer end surface of the bearing, it is necessary to load the bearing with preload and simulate the rotation of the electric drive to ensure the accuracy of the measurement.

[0067] The workpiece 1 to be measured needs to be measured with a high-precision digital probe. The resolution of the probe is 0.1μm, and the probe transmits 900 to 1200 data per second. The arrangement of the probe on the workpiece 1 and the measurement method have a certain influence on the measurement accuracy. The measurement method adopts a three-point measurement method; the probe arrangement is as shown in the figure, T1, T2, and T3 are the measurement probe distributions of the housing 1-1 joint surface, T4, T5, and T6 are the measurement probe distributions of the input shaft 1-2 ball bearing a, T7, T8, and T9 are the measurement probe distributions of the intermediate shaft 1-3 ball bearing b, and T10, T11, and T12 are the measurement probe distributions of the output shaft 1-4 ball bearing c. The connection area of ​​the probe distribution on the housing 1-1 joint surface needs to cover the measurement probe distributions of the input shaft 1-2 ball bearing a, the measurement probe distributions of the intermediate shaft l-3 ball bearing b, and the measurement probe distributions of the output shaft 1-4 ball bearing c.

[0068] The present invention discloses a high-dynamic measurement device for an electric drive shaft, comprising a workpiece 1, a measuring unit 2, a lifting unit 3, a placement table 4, a base 5, a small-value standard part 6 and a large-value standard part 7. The measuring unit 2 comprises a clamping component 2-1, a supporting floating component 2-2, an input shaft ball bearing outer end surface measuring component 2-3, an intermediate shaft tapered bearing outer end surface measuring component 2-4, an output shaft tapered bearing outer end surface measuring component 2-5, a supporting floating fixing component 2-6, and a floating mechanism 2-7, which are used to clamp and measure the workpiece 1.

[0069] The workpiece 1 is positioned and clamped using the 321 principle. Positioning assembly 1 101 and positioning assembly 2 102 are used for rotation in the X / Y / Z directions and translation in the X / Y directions. The clamping assembly 2-1 uses clamping assembly 1 2-1a, clamping assembly 2-1b, clamping assembly 3 2-1c and clamping assembly 4 2-1d for translation in the Z direction.

[0070] The clamping assembly 2-1 adopts a connecting rod self-locking mechanism, including a double-force cylinder 2-101, a connecting seat 2-102, a cylinder mounting seat 2-103, a sensor bracket 2-104, an in-position sensor 2-105, a pressure block 2-106, a connecting rod 2-107, a pull rod 2-108, a connecting rod 3 2-109, a connecting rod 1 2-110, a rotating shaft 2-111, a rotating shaft 1 2-112, and a rotating shaft 3 2-113. The lower end face of the connecting seat 2-102 is mounted on the upper end face of the floating plate 2-206, one on each side, the upper end face of the double force cylinder 2-101 is mounted on the lower end face of the cylinder mounting seat 2-103, the lower end face of the pull rod 2-108 is mounted on the piston rod end face of the double force cylinder 2-101, the left and right connecting rods 2-107 are connected to the left and right ends of the pull rod 2-108 through a rotating shaft 3 2-113, and then through another rotating shaft 3 2-113 connects the pressure block 2-106 to the connecting rod 2-107, and connects the left and right connecting rods 2-110 to the pressure block 2-106 and the left and right sides of the cylinder mounting seat 2-103 respectively through two rotating shafts 2-111, and then connects the left and right connecting rods 3 2-109 to the left and right sides of the connecting rods 2-110 respectively through the rotating shaft 2-112. After the above installation, the lower end face of the cylinder mounting seat 2-103 is installed on the upper end faces of the two connecting seats 2-102, and the lower end face of the sensor bracket 2-104 is installed on the upper end face of the cylinder mounting seat 2-103. Two in-place sensors 2-105 are fixed to the sensor bracket 2-104 for clamping the workpiece 1. One of the two in-place sensors 2-105 is used for clamping sensing, and the other is used for opening sensing. The self-locking function is achieved by the self-locking function of the connecting rod mechanism.

[0071] The supporting floating assembly 2-2 includes a supporting block 2-201, a positioning pin sleeve 2-202, a positioning pin sleeve 2-203, three probes 2-204, a measuring fixed plate 2-205, a floating plate 2-206, an adjustment block 2-207, a pin sleeve 2-208, a pin sleeve 2-209, a floating mechanism 2-7, a supporting seat 2-210, and a measuring mounting seat 2-211. The lower end surface of the support block 2-201 is installed on the upper end surface of the floating plate 2-206. The upper end surface of the support block 2-201 is the joint surface of the shell 1-1. The positioning pin sleeve 2-202 and the positioning pin sleeve 2-203 are fixed to the support block 2-201 through the top screw. The three probes 2-204 are respectively installed on the support block 2-201, and then the pin sleeve 2-208 and the pin sleeve 2-209 are installed on the lower end surface of the measuring fixed plate 2-205. The upper end surface of the measuring fixed plate 2-205 is installed on the upper end surface of the lifting platform 3-2. The adjustment block 2-201 is installed on the upper end surface of the lifting platform 3-2. -207 is installed on the upper end surface of the lifting platform 3-2, and the supporting floating assembly 2-2 is adjusted in X / Y by two bolts, one bolt is tightened, and the other bolt is pushed; four floating mechanisms 2-7 connect the floating plate 2-206 and the measuring fixed plate 2-205, and can translate in the X / Y plane with a moving distance of ±1mm, and move up and down in the Z direction, and then the lower end surfaces of the four supporting seats 2-210 are installed on the upper end surface of the floating plate 2-206, and the lower end surfaces of the measuring mounting seat 2-211 are installed on the upper end surfaces of the four supporting seats 2-210.

[0072] To summarize, the support block 2-201 is made into an integral surface to prevent impurities and dust on the joint surface of the shell 1-1 from being found at this work station, avoiding quality risks of the subsequent workpiece 1; the support floating component 2-2 can float up and down in the Z direction and float ±1mm in the X / Y plane to ensure the positioning accuracy of the floating component 2-2 when pressing the workpiece 1; the adjustment block 2-207 uses two bolts to adjust the support floating component 2-2 in X / Y during equipment debugging, one bolt is tightened, and the other bolt is pushed.

[0073] The floating mechanism 2-7 includes a floating fixed plate 2-701, a thrust bearing 2-702, a floating plate 2-206, a connecting plate 2-703, a bolt 2-710, a floating shaft 2-709, a connecting plate 2-704, a thrust bearing 2-705, a sleeve 2-706, a disc spring 2-707, and a connecting plate 3 2-708. The lower end face of the floating fixed plate 2-701 is placed on the upper end face of the measuring fixed plate 2-205, the upper end cover plate of the thrust bearing 2-702 is reversed and placed as a whole on the upper end face of the floating fixed plate 2-701, the lower end face of the connecting plate 1 2-703 is connected to the reversed cover plate of the thrust bearing 1 2-702, and the upper end face is connected to the lower end face of the floating plate 2-206, the lower end face of the connecting plate 2-704 is placed on the upper end face of the floating plate 2-206, and the lower end face of the thrust bearing 2-705 is reversed. The cover plate is reversed and connected to the upper end surface of the connecting plate 2-704, and the floating shaft 2-709 is installed into the holes of the thrust bearing 2-705, the connecting plate 2-704, the floating plate 2-206, the connecting plate 1 2-703, the thrust bearing 1 2-702, and the floating fixed plate 2-701 to increase the floating range, improve the accuracy and reduce the cost. The hole diameters of the connecting plate 2-704, the floating plate 2-206, and the connecting plate 1 2-703 are 2mm larger than the shaft diameter of the floating shaft 2-709. , the aperture of the floating fixed plate 2-701 is equal to the diameter of the floating shaft 2-709, and then the sleeve 2-706 is inserted into the floating shaft 2-709. The aperture of the sleeve 2-706 is equal to the diameter of the floating shaft 2-709. The two disc springs 2-707 are inserted into the diameter of the floating shaft 2-709 and contact the upper end surface of the sleeve 2-706. Then the lower end surface of the connecting plate 3 2-708 is in contact with the disc spring 2-707, and the bolt 2-710 is passed through the floating The inner hole of the shaft 2-709 is locked with the measuring fixed plate 2-205, thus forming a floating mechanism 2-7. The two disc springs 2-707 make the Z axis float up and down. Due to the force formed by the disc springs, the bolt 2-710 has an anti-loosening function. The floating shaft 2-709 is 2mm smaller in diameter than the connecting plate 2-704, the floating plate 2-206, and the connecting plate 1 2-703, so that the measuring unit 2 has a floating range of ±1mm on the X / Y plane.

[0074] The input shaft ball bearing outer end face measurement assembly 2-3 includes a bearing sleeve 2-301, a clamping block 2-302, a connecting block 2-303, three probes 2-304, three L connecting blocks 2-305, a sleeve 2-306, a counterweight floating shaft 2-307, a counterweight connecting plate 2-308, a counterweight block 2-309, a buffer pad 2-310, a fixed shaft 2-311, a floating shaft 2-312, a linear bearing 2-313, a sleeve 2-314, a limit shaft 2-315, a linear bearing 2-316, a retaining spring 2-317, and a fixed shaft 2-318. The clamping block 2-302 and the connecting block 2-303 are connected by the fixed shaft 2-311, and the limiting shaft 2-315 passes through the floating shaft 2-312, the shaft sleeve 2-314 and the sleeve 2-306 to limit the floating range. The semicircular boss of the clamping block 2-302 contacts the semicircular groove of the connecting block 2-303 to form a universal floating. By setting the clamping block 2-302 and the connecting block 2-303 to form a floating 2° limit, the bearing sleeve 2-301 and the connecting block 2-303 are fixed by the top screw. Connect the connecting block 2-302, install the lower end face of the sleeve 2-306 on the upper end face of the measuring mounting seat 2-211, install the linear bearing 2-313 into the hole of the sleeve 2-306, then install the shaft sleeve 2-314 into the hole of the sleeve 2-306, and then install the linear bearing 2-316 into the hole of the sleeve 2-306, use the retaining spring 2-317 to clamp the sleeve 2-306, and install the buffer pad 2-310 on the upper end face of the sleeve 2-306, so that the linear shaft The bearing 2-313, the sleeve 2-314, the linear bearing 2-316, the buffer pad 2-310 and the sleeve 2-306 form a whole, the floating shaft 2-312 is fixed to the connecting block 2-303 by the fixed shaft 2-318, and then the floating shaft 2-312 passes through the inner hole of the linear bearing 2-313, the sleeve 2-314, the linear bearing 2-316, and the buffer pad 2-310, and then the lower end surface of the counterweight connecting plate 2-308 is connected to the floating shaft 2-3 12 upper end surface is fixed, two counterweight floating shafts 2-307 are passed through two linear bearings 2-554, and connected with counterweight connecting plate 2-308, and finally counterweight block 2-309 is loaded onto the upper end surface of counterweight connecting plate 2-308, so that the clamping block 2-302 can be lifted by a certain upward force, and when there is no force, it can be lifted by a falling body, and the buffer pad 2-310 is used to buffer the free falling body, thereby avoiding damage to the equipment caused by hard contact. The three L connecting blocks 2-305 are respectively installed on the three mounting surfaces on the side of the sleeve 2-306, and then the three probes 2-304 are respectively fixed on the three L connecting blocks 2-305, and the probes of the three probes 2-304 are in contact with the clamping block 2-302.In summary, the input shaft ball bearing outer end face measurement component 2-3 has an up and down floating function and can also perform universal floating with a floating angle of 2°, thereby ensuring that the clamping block 2-302 is always in contact with the outer end face of the bearing, and then the preload force is applied to the bearing through the loading force of the counterweight block 2-309, so as to ensure the accuracy of the measurement of the probe 2-304.

[0075] The intermediate shaft tapered bearing outer end face measuring assembly 2-4 is installed and has the same function as the input shaft ball bearing outer end face measuring assembly 2-3.

[0076] The output shaft tapered bearing outer end surface measurement assembly 2-5 includes a shift fork 2-501, a quick-change shaft 2-502, a floating rotating shaft 2-503, a clamping block 2-504, a spring 1-2-509, an adjustment bolt 2-510, a limit bolt 2-511, a probe connecting plate 1-2-505, three probes 3-2-508, a connecting plate 4-2-514, a counterweight floating shaft 2-515, a sensor 1-2-516, four counterweight linear bearings 2-517, a buffer pad 2-518, a sensor bracket 2-525, a sensor 2-524, two counterweight support shafts 2-519, a reducer mounting seat 2-520, a reducer 2-521, a servo motor 1-2-522, a counterweight block 2-523, a probe connecting plate 2-506, a floating connecting sleeve 2-512, and a counterweight connecting sleeve 2-51 3. Probe connecting plate three 2-507, measuring mounting seat 2-211, five support shafts 2-526, sensor bracket three 2-527, sensor three 2-528, sensor bracket four 2-529, sensor four 2-530, sensor bracket five 2-531, sensor five 2-532, sensor bracket six 2-533, sensor six 2-534, detection ring 2-538, sensor bracket seven 2-535, sensor seven 2-536, linear bearing three 2-554, sensor bracket eight 2-537, connecting bolt one 2-539, pressure Tightening block three 2-540, floating shaft two 2-541, connecting plate four 2-542, deep groove ball bearing one 2-543, two flat keys 2-544, sleeve two 2-545, sleeve three 2-546, deep groove ball bearing two 2-547, spring two 2-548, connecting seat two 2-549, connecting seat three 2-550, coupling one 2-551, bushing one 2-552, mounting seat 2-553, bushing two 2-555, sleeve four 2-556, two counterweight connecting plates two 2-557, floating sleeve 2-558, connecting bolt two 2-559.

[0077] The shift fork 2-501 is connected to the quick-change shaft 2-502 and the floating rotating shaft 2-503 by connecting bolt 1-539. The shift fork 2-501 is coupled with the differential shaft in the output shaft 1-4. The shift fork 2-501 is made of 5Cr4W3Mo2V material, and the heat treatment hardness reaches HRC42~46. The shift fork 2-501 is easy to break, and the quick-change shaft 2-502 is used to make the shift fork 2-501 easier to replace. The detection ring 2-538 is installed on the floating rotating shaft 2-503, the bushing 2-555 is installed in the sleeve 4 2-556, and the sleeve 4 2-556 is installed in the sleeve 3 2-546. The two flat keys 2-5 44 are respectively installed into the card slots on both sides of the floating rotating shaft 2-503, and then the bushing 1 2-552 is installed into the connecting seat 2-549, the connecting seat 2-549 is connected to the sleeve 3 2-546, and then the deep groove ball bearing 2 2-547 is installed into the mounting hole of the upper end face of the mounting seat 2-553, and then the deep groove ball bearing 1 2-543 is installed into the mounting hole of the lower end face of the mounting seat 2-553, and the sleeve 3 2-546 is inserted into the inner diameter of the deep groove ball bearing 1 2-543 and the deep groove ball bearing 2 2-547, and then the floating rotating shaft 2-503 is installed into the sleeve 3 2-546, and the two flat keys 2-544 are inserted into the inner card slots of the sleeve 3 2-546 The second sleeve 2-55 is inserted into the groove, and then the sleeve 2-55 is installed from the lower end of the floating rotating shaft 2-503. At the same time, the sleeve 4 2-556 and the sleeve 3 2-546 are fixed together. The sleeve 2-545 is installed from the upper end of the floating rotating shaft 2-503. Then the spring 2-548 is installed from the upper end of the floating rotating shaft 2-503. The bushing 1 2-552 is installed from the upper end of the floating rotating shaft 2-503. At the same time, the connecting seat 2-549 and the sleeve 3 2-546 are fixed together. In this way, the floating rotating shaft 2-503 can move up and down and rotate. The mounting seat 2-553 is installed on the upper end surface of the measuring mounting seat 2-211. The connecting seat 2-553 is installed on the upper end surface of the measuring mounting seat 2-211. Connecting seat three 2-550 is connected to connecting seat two 2-549, coupling one 2-551 is connected to the shaft on connecting seat three 2-550, the lower end faces of the five support shafts 2-526 are installed on the upper end face of the measuring mounting seat 2-211, and then the lower end face of the reducer mounting seat 2-520 is installed on the upper end faces of the five support shafts 2-526, and then the reducer 2-521 is installed into coupling one 2-551 and connected to the upper end face of the reducer mounting seat 2-520, and then the servo motor one 2-522 is installed on the reducer 2-521, thus completing the installation of the driving function of the floating rotating shaft 2-503, which is used to drive the output shaft 1-4.Sensor bracket three 2-527 is installed on the upper end surface of the reducer mounting seat 2-520, sensor three 2-528 is installed on sensor bracket three 2-527, sensor bracket four 2-529 is installed on the upper end surface of the reducer mounting seat 2-520, sensor four 2-530 is installed on sensor bracket four 2-529, sensor bracket five 2-531 is installed on the upper end surface of the reducer mounting seat 2-520, sensor five 2-532 is installed on sensor bracket five 2-531, sensor bracket six 2-533 is installed on the upper end surface of the reducer mounting seat 2-520, sensor six 2-534 is installed on sensor bracket six 2-533, sensor three 2-528, sensor four 2-530 are used to detect the input shaft ball The outer end surface measurement component 2-3 of the bearing floats, and the sensor five 2-532 and the sensor six 2-534 are used to detect the float of the outer end surface measurement component 2-4 of the intermediate shaft tapered bearing; connect the mounting surfaces of the four counterweight linear bearings 2-517 to the upper end surface of the measuring mounting seat 2-211, and install the upper end surfaces of the two counterweight floating shafts 2-515 to the lower end surface of a counterweight connecting plate 2-557, and install two in this way, and insert the two installed components from the lower end of the counterweight floating shaft 2-515 into the buffer pad 2-518, and install the counterweight floating shaft 2-515 into the counterweight linear bearing 2-517, and then install the upper end surface of the connecting plate 4 2-514 to the lower end surface of the four counterweight floating shafts 2-515, and then install the two counterweight support shafts 2-51 9 The lower end faces are respectively mounted on the upper end faces of the two counterweight connecting plates 2-557, and the counterweight block 2-523 is loaded on the upper end face of the counterweight support shaft 2-519. The sensor bracket 2-525 is mounted on the upper end face of the measuring mounting seat 2-211, the sensor 2-524 is mounted on the sensor bracket 2-525, the sensor bracket 7 2-535 is mounted on the upper end face of the measuring mounting seat 2-211, and the sensor 7 2-536 is mounted on the sensor bracket 7 2-535. The sensor 2-524 and the sensor 7 2-535 are used to detect the floating of the counterweight mechanism of the output shaft tapered bearing outer end face measurement assembly 2-5; the sensor bracket 8 2-537 is mounted on the mounting seat 2-553, and the sensor 1 2-516 is mounted on the sensor bracket 8 2-537 to detect the floating of the floating rotating shaft 2-503.Connect the floating connection sleeve 2-512 with the clamping block 2-540 through the top screw, install the floating shaft 2-541 on the counterweight connection sleeve 2-512 through the top screw, connect the counterweight connection sleeve 2-513 with the floating connection sleeve 2-512 with the limit bolt 2-511, and make it float up and down, install the clamping block 2-504 on the floating sleeve 2-558, and connect the floating sleeve 2-558 with the floating connection sleeve 2-512 with the connecting bolt 2-559, and the spring 1-2-5 09 is installed on the upper end surface of the floating sleeve 2-558, the adjusting bolt 2-510 is transmitted into the spring one 2-509 and is connected to the floating connecting sleeve 2-512, the probe connecting plate one 2-505, the probe connecting plate two 2-506 and the probe connecting plate three 2-507 are installed on the floating plate 2-206, and the three probe threes 2-508 are respectively installed on the probe connecting plate one 2-505, the probe connecting plate two 2-506 and the probe connecting plate three 2-507, which are used to detect the outer end surface of the output shaft tapered bearing of the workpiece 1.

[0078] In summary, the shift fork 2-501 floats up and down and rotates to couple the straight shaft of the differential in the output shaft tapered bearing outer end face measuring assembly 2-5, and starts to rotate after coupling, and then is loaded onto the outer end face of the tapered bearing of the output shaft tapered bearing outer end face measuring assembly 2-5 through the counterweight block 2-523, and is connected to the semicircular groove of the floating shaft 2 2-541 through the semicircular boss of the pressure block 3 2-540, and a limit of 2° is set for universal floating.

[0079] The supporting floating fixing assembly 2-6 includes a positioning pin one 2-601, a sleeve seat 2-602, a cylinder 2-603, a sensor eight 2-604, a sensor bracket nine 2-605, a sensing block 2-606, a limiting bolt one 2-607, a bushing 2-608, a floating joint 2-609, a limiting bolt two 2-610, and a sensor nine 2-611.

[0080] Install the two bushings 2-608 into the two ends of the sleeve seat 2-602 respectively, connect the floating joint 2-609 with the piston rod of the cylinder 2-603, and then connect the positioning pin 2-601 with the floating joint 2-609, and then insert the positioning pin 2-601 into the inner holes of the two bushings 2-608, and then install the cylinder 2-603 on the upper end surface of the sleeve seat 2-602, and install the limit bolt 2-607 and the limit bolt 2-610 on the upper and lower sides of the sleeve seat 2-602 respectively to prevent the bushing 2-608 from falling, and then install the induction block 2- 606 is installed to the upper end of the piston rod of the cylinder 2-603, the sensor bracket nine 2-605 is installed to the upper end surface of the cylinder 2-603, the sensor eight 2-604 and the sensor nine 2-611 are respectively installed to the sensor bracket nine 2-605, which are used to identify the rise and fall of the cylinder, and finally the lower end surface of the sleeve seat 2-602 is installed on the floating plate 2-206, and two are installed respectively. After the cylinder 2-603 is extended, the positioning pin one 2-601 is positioned with the pin sleeve one 2-208 and the pin sleeve two 2-209, which is used to lock the supporting floating assembly 2-2.

[0081] The placement table 4 includes an adjustment block 2 4-1, a frame 1 4-2, a support column 4-3, a support block 2 4-4, a diamond positioning pin 4-5, a circular positioning pin 4-6, a corresponding sensor 4-7, a sensor bracket 11 4-8, a sensor bracket 10 4-9, a support block 3 4-10, a support block 4 4-11, a sensor 11 4-12, a sensor 10 4-13, a sensor bracket 13 4-14, and a sensor bracket 12 4-15.

[0082] Adjustment block two 4-1 is installed on the base 5 to adjust the position of the placement table 4, frame one 4-2 is installed on the base 5, the lower end of the support column 4-3 is installed on the upper end surface of the frame one 4-2, and then the lower end surface of support block two 4-4 is installed on the upper end surface of support column 4-3, the lower end surfaces of diamond positioning pins 4-5 and circular positioning pins 4-6 are installed on the upper end surface of frame one 4-2, sensor bracket eleven 4-8 and sensor bracket ten 4-9 are installed on the upper end surface of frame one 4-2, the receiving end and the transmitting end of the corresponding sensor 4-7 are installed on sensor bracket eleven 4-8 and sensor bracket ten 4-9 respectively, support block three 4-10 and support block four 4-11 are installed on the upper end surface of frame one 4-2, sensor bracket thirteen 4-14 and sensor bracket twelve 4-15 are installed on the upper end surface of frame one 4-2, sensor ten 4-13 is installed on sensor bracket thirteen 4-14, and sensor eleven 4-12 is installed on sensor bracket twelve 4-15. The through-beam sensor 4-7 is used to detect the workpiece 1, the sensor eleven 4-12 is used to detect the large-value standard part 7, and the sensor ten 4-13 is used to detect the small-value standard part 6.

[0083] The lifting unit 3 includes a frame 2 3-1, a lifting platform 3-2, a connecting seat 4 3-3, a floating joint 3-4, a cylinder mounting seat 2 3-5, a lead screw 3-6, a connecting seat 6 3-7, a sensor bracket 15 3-8, a sensor 13 3-9, a latch 3-10, a connecting seat 5 3-11, a sensor 12 3-12, a sensor bracket 14 3-13, a self-locking cylinder 3-14, a sheet metal part 3-15, a drag chain 3-16, a coupling 2 3-17, and a servo motor 2 3-18, drag chain sheet metal 3-19, slide rail mounting seat 3-20, sensor bracket sixteen 3-12, sensor fourteen 3-22, sensor fifteen 3-23, sensor bracket seventeen 3-24, sensor sixteen 3-25, sensor sensing bracket 3-26, slide rail 3-27, screw connection seat one 3-28, slider 3-29, screw nut mounting seat 3-32, screw nut 3-31, screw connection seat two 3-30, motor mounting seat 3-33.

[0084] Install the frame 2 3-1 onto the base 5, install the slide rail mounting seat 3-20 onto the frame 2 3-1, install the slide rail 3-27 onto the slide rail mounting seat 3-20, install the motor mounting seat 3-33 onto the slide rail mounting seat 3-20, install the screw connection seat 1 3-28 onto the motor mounting seat 3-33, then install the screw nut 3-31 onto the screw 3-6, then install the screw nut mounting seat 3-32 onto the screw nut 3-31, insert the screw 3-6 into the screw connection seat 1 3-28, and at the same time install the screw connection seat 2 3-30 into the lower end of the screw 3-6 and fix it through the retaining spring, and at the same time install the screw connection seat 2 3-30 onto the frame 2 3-1, install the slider 3-29 onto the slide rail 3-27, install the drag chain sheet metal 3-19 onto the frame 2 3-1, and install the cylinder mounting seat 2 3-5. Go to both sides of the frame 2 3-1, install the self-locking cylinder 3-14 into the cylinder mounting seat 2 3-5 respectively, then install the floating joint 3-4 to the piston rod of the self-locking cylinder 3-14, install the sheet metal 3-15 to the lifting platform 3-2, then install the lifting platform 3-2 to the slider 3-29 and the screw nut mounting seat 3-32, then install the connecting seat 4 3-3 to the lifting platform 3-2 and connect it to the floating joint 3-4, then install the coupling 2 3-17 to the upper end of the screw 3-6, then install the servo motor 2 3-18 to the coupling 3-17 and connect it to the motor mounting seat 3-33, install the connecting seat 6 3-7 to the frame 2 3-1, install the connecting seat 5 3-11 to the frame 2 3-1, install the sensor bracket 15 3-8 to the connecting seat 6 3-7, install the sensor bracket 14 3-1 3 is installed on the connecting seat five 3-11, the sensor thirteen is installed on the sensor bracket fifteen 3-8, the sensor twelve, 3-12 is installed on the sensor bracket fourteen 3-13, and the pin 3-10 is placed on the connecting seat five 3-11, which can be used for safety during maintenance, and the drag chain 3-16 is installed on the sheet metal 3-15 and the drag chain sheet metal 3-19, and the sensor bracket sixteen 3-12 and the sensor bracket seventeen 3-24 are installed on the frame two 3-1 respectively, and the sensor fourteen 3-22 and the sensor fifteen 3-23 are installed on the sensor bracket sixteen 3-12, and the sensor sixteen 3-25 is installed on the sensor bracket seventeen 3-24, and the sensor sensing bracket 3-26 is installed on the lifting platform 3-2. The sensor fourteen 3-22 and the sensor sixteen 3-25 are alarms for the extreme positions of the lifting platform 3-2, and the sensor fifteen 3-23 is the initial position of the lifting platform 3-2. In summary, the self-locking cylinder 3-14 is used to balance the total weight of the lifting platform 3-2 and the installed units, which increases the service life of the screw 3-6 and can reduce the torque and power of the servo motor 3-18.

[0085] The large value standard part 7 includes a base 7-1, a positioning sleeve 7-2, a buffer pad three 7-3, a handle 7-4, a joint surface support block 7-5, a positioning pin two 7-6, an input shaft standard block 7-7, an intermediate shaft standard block 7-8, an output shaft standard block 7-9 and a sensor sensing plate 7-10.

[0086] Install two positioning sleeves 7-2 on the lower end surface of base 7-1, install four buffer pads 7-3 on the lower end surface of base 7-1, install sensor sensing plate 07-10 on the lower end surface of base 7-1, install two handles 7-4 on both sides of base 7-1, install several joint surface support blocks 7-5 on the upper end surface of base 7-1, install input shaft standard block 7-7, intermediate shaft standard block 7-8, output shaft standard block 7-9 on the upper end surface of base 7-1, and install two positioning pins 2 7-6 on the upper end surface of base 7-1. Large value standard parts 7 are used to verify the stability, accuracy, repeatability and reproducibility of equipment; the installation method of small value standard parts 6 is the same as that of large value standard parts 7. Small value standard parts 6 are used for measurement benchmarks, measurement and calculation of workpiece 1, equipment verification and other functions.

[0087] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0088] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation", "screwing", "pad installation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0089] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. A highly dynamic measuring device for an electric drive shaft, used for measuring a workpiece (1), characterized in that: The invention comprises a measuring unit (2), a lifting unit (3), a placing table (4), a base (5), a small value standard part (6) and a large value standard part (7); the measuring unit (2), the lifting unit (3), the placing table (4), the small value standard part (6) and the large value standard part (7) are all arranged above the base (5); the measuring unit (2) comprises a clamping assembly (2-1), a supporting floating assembly (2-2), an input shaft ball bearing outer end surface measuring assembly (2-3), an intermediate shaft tapered bearing outer end surface measuring assembly (2-4), an output shaft tapered bearing outer end surface measuring assembly (2-5), a supporting floating fixing assembly (2-6) and a floating mechanism (2-7).

2. The high-dynamic measurement device for electric drive shaft according to claim 1, characterized in that: The supporting floating assembly (2-2) comprises a supporting block 1 (2-201), a positioning pin sleeve 1 (2-202), a positioning pin sleeve 2 (2-203), a probe 1 (2-204), a measuring fixed plate (2-205), a floating plate (2-206), an adjusting block 1 (2-207), a pin sleeve 1 (2-208), a pin sleeve 2 (2-209), a supporting seat 1 (2-210) and a measuring mounting seat (2-211); the upper end surface of the supporting block 1 (2-201) contacts the workpiece (1); the lower end surface of the supporting block 1 (2-201) is mounted on the upper end surface of the floating plate (2-206); the supporting block 1 (2-201) ) is fixed with a positioning pin sleeve 1 (2-202) and a positioning pin sleeve 2 (2-203) by means of a top screw, a probe 1 (2-204) is respectively installed on the support block 1 (2-201), a pin sleeve 1 (2-208) and a pin sleeve 2 (2-209) are installed on the lower end surface of the measurement fixed plate (2-205), the floating plate (2-206) and the measurement fixed plate (2-205) are connected via a floating mechanism (2-7), the lower end surface of the support seat 1 (2-210) is installed on the upper end surface of the floating plate (2-206), and the lower end surface of the measurement mounting seat (2-211) is installed on the upper end surface of the support seat 1 (2-210).

3. The high-dynamic measurement device for electric drive shaft according to claim 2, characterized in that: The clamping assembly (2-1) comprises a double-force cylinder (2-101), a connecting seat 1 (2-102), a cylinder mounting seat 1 (2-103), a pressing block (2-106), a connecting rod 2 (2-107), a pull rod (2-108), a connecting rod 3 (2-109), a connecting rod 1 (2-110), a rotating shaft 2 (2-111), a rotating shaft 1 (2-112) and a rotating shaft 3 (2-113). The lower end surface of the connecting seat 1 (2-102) is installed on the upper end surface of the floating plate (2-206), one on each side, the lower end surface of the cylinder mounting seat 1 (2-103) is installed on the upper end surfaces of the two connecting seats 1 (2-102), the upper end surface of the double-strength cylinder (2-101) is installed on the lower end surface of the cylinder mounting seat 1 (2-103), the lower end surface of the pull rod (2-108) is installed on the piston rod end surface of the double-strength cylinder (2-101), and the two connecting rods 2 (2-107) on the left and right are connected by a rotating shaft 3 ( The second connecting rod (2-107) is connected to the left and right ends of the pull rod (2-108), and the other rotating shaft (2-113) connects the pressure block (2-106) to the connecting rod (2-107). The left and right connecting rods (2-110) are respectively connected to the pressure block (2-106) and the left and right sides of the cylinder mounting seat (2-103) through two rotating shafts (2-111). The left and right connecting rods (2-109) are respectively connected to the sides of the left and right connecting rods (2-110) through rotating shafts (2-112).

4. The high-dynamic measurement device for electric drive shaft according to claim 3, characterized in that: The floating mechanism (2-7) comprises a floating fixed plate (2-701), a thrust bearing 1 (2-702), a connecting plate 1 (2-703), a connecting plate 2 (2-704), a thrust bearing 2 (2-705), a shaft sleeve 1 (2-706), a disc spring (2-707), a connecting plate 3 (2-708), a floating shaft (2-709) and a bolt (2-710), wherein the lower end surface of the floating fixed plate (2-701) The thrust bearing 1 (2-702) is placed on the upper end surface of the measuring fixed plate (2-205), the upper end cover plate of the thrust bearing 1 (2-702) is reversed and placed as a whole on the upper end surface of the floating fixed plate (2-701), the lower end surface of the connecting plate 1 (2-703) is connected to the reversed cover plate of the thrust bearing 1 (2-702), the upper end surface of the connecting plate 1 (2-703) is connected to the lower end surface of the floating plate (2-206), and the lower end surface of the connecting plate 2 (2-704) is placed The floating plate (2-206) is mounted on the upper end surface of the floating plate (2-206), the lower end cover plate of the thrust bearing (2-705) is reversely mounted and connected to the upper end surface of the connecting plate (2-704), and the floating shaft (2-709) is sequentially installed in the holes of the thrust bearing (2-705), the connecting plate (2-704), the floating plate (2-206), the connecting plate (2-703), the thrust bearing (2-702) and the floating fixed plate (2-701). The shaft sleeve 1 (2-706) is inserted into the floating shaft (2-709), the disc spring (2-707) is inserted into the shaft diameter of the floating shaft (2-709) and contacts the upper end surface of the shaft sleeve 1 (2-706), the lower end surface of the connecting plate 3 (2-708) contacts the disc spring (2-707), and the bolt (2-710) passes through the inner hole of the floating shaft (2-709) and is locked with the measuring fixed plate (2-205).

5. The high-dynamic measurement device for electric drive shaft according to claim 4, characterized in that: The input shaft ball bearing outer end surface measurement assembly (2-3) comprises a bearing sleeve (2-301), a clamping block (2-302), a connecting block (2-303), a probe (2-304), an L connecting block (2-305), a sleeve (2-306), a counterweight floating shaft (2-307), a counterweight connecting plate (2-308), a counterweight block (2-309), a buffer pad (2-310), a fixed shaft (2-311), a floating shaft (2-312), a linear bearing (2-313), a shaft sleeve (2-314), a limit shaft (2-315), a linear bearing (2-316), and a retaining spring (2-317). and a fixed shaft 2 (2-318), the clamping block 1 (2-302) and the connecting block 1 (2-303) are connected via a fixed shaft 1 (2-311), the semicircular boss of the clamping block 1 (2-302) contacts the semicircular groove of the connecting block 1 (2-303), the bearing sleeve (2-301) and the connecting block 1 (2-302) are connected via a top screw, the lower end surface of the sleeve 1 (2-306) is mounted on the upper end surface of the measuring mounting seat (2-211), the linear bearing 1 (2-313), the shaft sleeve 2 (2-314) and the linear bearing 2 (2-316) are installed in the hole of the sleeve 1 (2-306), and are clamped by the retaining spring 1 (2-317). The first sleeve (2-306) is inserted into the first sleeve (2-306), the buffer pad (2-310) is installed on the upper end surface of the first sleeve (2-306), the floating shaft (2-312) and the connecting block (2-303) are fixed by the second fixed shaft (2-318), the floating shaft (2-312) passes through the inner hole of the linear bearing (2-313), the second sleeve (2-314), the second linear bearing (2-316) and the buffer pad (2-310) in sequence, the lower end surface of the counterweight connecting plate (2-308) is fixed to the upper end surface of the floating shaft (2-312), the counterweight floating shaft (2-307) is connected to the counterweight connecting plate (2-308), and the counterweight block (2-318) is fixed to the first sleeve (2-306), and the first fixed shaft (2-312) is fixed to the upper end surface of the floating shaft (2-312). 2-309) is loaded onto the upper end surface of the counterweight connecting plate 1 (2-308), the L connecting block (2-305) is respectively installed on the three mounting surfaces on the side of the sleeve 1 (2-306), the probe 2 (2-304) is respectively fixed to the L connecting block (2-305), the probe of the probe 2 (2-304) is in contact with the clamping block 1 (2-302), the limit shaft 1 (2-315) passes through the floating shaft 1 (2-312), the sleeve 2 (2-314) and the sleeve 1 (2-306), and is used to limit the floating range, and the input shaft ball bearing outer end surface measurement component (2-3) and the intermediate shaft tapered bearing outer end surface measurement component (2-4) have the same structure.

6. The high-dynamic measurement device for electric drive shaft according to claim 5, characterized in that: The output shaft tapered bearing outer end surface measuring assembly (2-5) comprises a shift fork (2-501), a quick-change shaft (2-502), a floating rotating shaft (2-503), a clamping block 2 (2-504), a spring 1 (2-509), an adjustment bolt (2-510), a limit bolt (2-511), a probe connecting plate, a probe 3 (2-508), a connecting plate 4 (2-514), a counterweight floating shaft 2 (2-515), a counterweight linear bearing (2-517), a buffer pad 2 (2-518), a counterweight support shaft (2-519), a reducer mounting seat (2-520), a reducer (2-521), a servo motor 1 (2-522), a counterweight block (2-523), a floating connecting sleeve (2-51 2), counterweight connecting sleeve (2-513), support shaft (2-526), ​​detection ring (2-538), linear bearing three (2-554), connecting bolt one (2-539), clamping block three (2-540), floating shaft two (2-541), connecting plate four (2-542), deep groove ball bearing one (2-543), flat key (2-544), sleeve two (2-545), sleeve three (2-546), deep groove ball bearing two (2-547), spring two (2-548), connecting seat two (2-549), connecting seat three (2-550), coupling one (2-551), bushing one (2-552), mounting seat (2-553), bushing two (2-555), sleeve four (2 -556), a counterweight connecting plate 2 (2-557), a floating sleeve (2-558) and a connecting bolt 2 (2-559), the shift fork (2-501) is connected to the quick-change shaft (2-502) and the floating rotating shaft (2-503) through a connecting bolt 1 (2-539), the detection ring (2-538) is installed on the floating rotating shaft (2-503), the bushing 2 (2-555) is installed in the sleeve 4 (2-556), the sleeve 4 (2-556) is installed in the sleeve 3 (2-546), the two flat keys (2-544) are respectively installed in the grooves on both sides of the floating rotating shaft (2-503), and the connecting plate 4 (2-542) is installed on the mounting seat (2-553) for positioning A deep groove ball bearing (2-543), the probe connecting plate is installed on the floating plate (2-206), the probe (2-508) is installed on the probe connecting plate, the counterweight floating shaft (2-307) passes through the linear bearing (2-554), the bushing (2-552) is installed in the connecting seat (2-549), the connecting seat (2-549) is connected to the sleeve (2-546), the deep groove ball bearing (2-547) and the deep groove ball bearing (2-543) are respectively installed in the mounting holes of the upper end face and the lower end face of the mounting seat (2-553), and the sleeve (2-546) is inserted into the inner diameter of the deep groove ball bearing (2-543) and the deep groove ball bearing (2-547).The floating rotating shaft (2-503) is inserted into the sleeve three (2-546), the two flat keys (2-544) are inserted into the inner groove of the sleeve three (2-546), the bushing two (2-555) is inserted from the lower end of the floating rotating shaft (2-503), the sleeve four (2-556) is fixed to the sleeve three (2-546), the sleeve two (2-545) is inserted from the upper end of the floating rotating shaft (2-503), the spring two (2-548) is inserted from the upper end of the floating rotating shaft (2-503), the bushing one (2-552) is inserted from the upper end of the floating rotating shaft (2-503), the connecting seat two (2-549) is fixed to the sleeve three (2-546), and the mounting seat (2-55 3) is installed on the upper end surface of the measuring mounting seat (2-211), the connecting seat three (2-550) is connected to the connecting seat two (2-549), the coupling one (2-551) is connected to the shaft on the connecting seat three (2-550), the lower end surface of the support shaft (2-526) is installed on the upper end surface of the measuring mounting seat (2-211), the lower end surface of the reducer mounting seat (2-520) is installed on the upper end surface of the support shaft (2-526), ​​the support shaft (2-526) is installed on the measuring mounting seat (2-211), the reducer (2-521) is installed in the coupling one (2-551) and is connected to the upper end surface of the reducer mounting seat (2-520), the servo motor one (2-522) Installed on the reducer (2-521), the sleeve 2 (2-545) passes through the sleeve 3 (2-546) and is used for limiting the shift fork (2-501). The mounting surface of the counterweight linear bearing (2-517) is connected to the upper end surface of the measuring mounting seat (2-211), the upper end surface of the counterweight floating shaft 2 (2-515) is installed on the lower end surface of the counterweight connecting plate 2 (2-557), the lower end of the counterweight floating shaft 2 (2-515) is inserted into the buffer pad 2 (2-518), the counterweight floating shaft 2 (2-515) is installed in the counterweight linear bearing (2-517), the upper end surface of the connecting plate 4 (2-514) is installed on the lower end surface of the counterweight floating shaft 2 (2-515), and the counterweight support shaft (2-519) The lower end surface is installed on the upper end surface of the second counterweight connecting plate (2-557), the counterweight block (2-523) is loaded on the upper end surface of the counterweight support shaft (2-519), the floating connection sleeve (2-512) is connected to the clamping block three (2-540) through a top screw, the floating shaft two (2-541) is installed on the counterweight connecting sleeve (2-512) through a top screw, the counterweight connecting sleeve (2-513) and the floating connecting sleeve (2-512) are connected through a limit bolt (2-511), the clamping block two (2-504) is installed on the floating sleeve (2-558), and the floating sleeve (2-558) and the floating connecting sleeve (2-512) are connected through a connecting bolt two (2-559).The spring 1 (2-509) is installed on the upper end surface of the floating sleeve (2-558), and the spring 1 (2-509) is connected to the floating connection sleeve (2-512) through an adjustment bolt (2-510).

7. The high-dynamic measurement device for electric drive shaft according to claim 6, characterized in that: The supporting floating fixing assembly (2-6) comprises a positioning pin 1 (2-601), a sleeve seat (2-602), a cylinder (2-603), a sensing block (2-606), a limiting bolt 1 (2-607), a bushing (2-608), a floating joint (2-609) and a limiting bolt 2 (2-610), the two bushings (2-608) are respectively installed at both ends of the sleeve seat (2-602), the floating joint (2-609) is connected to the piston rod of the cylinder (2-603), the positioning pin 1 (2 -601) is connected to the floating joint (2-609) and is inserted into the inner holes of the two bushings (2-608). The cylinder (2-603) is installed on the upper end surface of the sleeve seat (2-602). The limiting bolt 1 (2-607) and the limiting bolt 2 (2-610) are respectively installed on the upper and lower sides of the sleeve seat (2-602). The sensing block (2-606) is installed on the upper end of the piston rod of the cylinder (2-603). The lower end surface of the sleeve seat (2-602) is installed on the floating plate (2-206).

8. The high-dynamic measurement device for electric drive shaft according to claim 7, characterized in that: The placing table (4) comprises an adjustment block 2 (4-1), a frame 1 (4-2), a support column (4-3), a support block 2 (4-4), a rhombus locating pin (4-5), a circular locating pin (4-6), a support block 3 (4-10) and a support block 4 (4-11); the adjustment block 2 (4-1) and the frame 1 (4-2) are mounted on a base (5); the lower end of the support column (4-3) is mounted on an upper end surface of the frame 1 (4-2); the lower end surface of the support block 2 (4-4) is mounted on an upper end surface of the support column (4-3); the lower end surfaces of the rhombus locating pin (4-5) and the circular locating pin (4-6) are mounted on an upper end surface of the frame 1 (4-2); and the support block 3 (4-10) and the support block 4 (4-11) are mounted on an upper end surface of the frame 1 (4-2).

9. The high-dynamic measurement device for electric drive shaft according to claim 8, characterized in that: The lifting unit (3) comprises a frame 2 (3-1), a lifting platform (3-2), a connecting seat 4 (3-3), a floating joint (3-4), a cylinder mounting seat 2 (3-5), a lead screw (3-6), a connecting seat 6 (3-7), a latch (3-10), a connecting seat 5 (3-11), a self-locking cylinder (3-14), a sheet metal part (3-15), a drag chain (3-16), a coupling 2 (3-17), a servo motor 2 (3-18), a drag chain sheet metal part (3-19), a slide rail mounting seat (3-20), a slide rail (3-27), a lead screw connecting seat 1 (3-28), a slider (3-29), a lead screw nut mounting seat (3-32), a lead screw nut (3-31), and a lead screw connecting seat 2 (3-30). and a motor mounting seat (3-33), the frame two (3-1) is mounted on the base (5), the slide rail mounting seat (3-20) is mounted on the frame two (3-1), the slide rail (3-27) is mounted on the slide rail mounting seat (3-20), the motor mounting seat (3-33) is mounted on the slide rail mounting seat (3-20), the lead screw connecting seat one (3-28) is mounted on the motor mounting seat (3-33), the measuring fixing plate (2-205) and the adjusting block one (2-207) are mounted on the upper end surface of the lifting platform (3-2), the lead screw (3-6) is inserted into the lead screw connecting seat one (3-28), the lead screw nut (3-31) is mounted on the lead screw (3-6), and the lead screw nut is mounted The seat (3-32) is installed on the lead screw nut (3-31), the lead screw connecting seat 2 (3-30) is installed in the lower end of the lead screw (3-6) and fixed by a retaining spring, the lead screw connecting seat 2 (3-30) is installed on the frame 2 (3-1), the slider (3-29) is installed in the slide rail (3-27), the drag chain sheet metal (3-19) is installed on the frame 2 (3-1), the cylinder mounting seat 2 (3-5) is installed on both sides of the frame 2 (3-1), the self-locking cylinder (3-14) is respectively installed in the cylinder mounting seat 2 (3-5), the floating joint (3-4) is installed on the piston rod of the self-locking cylinder (3-14), the sheet metal (3-15) is installed on the lifting platform (3-2), and the lifting platform ( The connecting seat 4 (3-3) is installed on the lifting platform (3-2) and connected to the floating joint (3-4). The coupling 2 (3-17) is installed on the upper end of the screw (3-6). The servo motor 2 (3-18) is installed on the coupling (3-17) and connected to the motor mounting seat (3-33). The connecting seat 6 (3-7) is installed on the frame 2 (3-1). The connecting seat 5 (3-11) is installed on the frame 2 (3-1). The latch (3-10) is placed on the connecting seat 5 (3-11). The drag chain (3-16) is installed on the sheet metal part (3-15) and the drag chain sheet metal part (3-19).

10. The high-dynamic measurement device for electric drive shaft according to claim 9, characterized in that: The same large value standard component (7) comprises a base (7-1), a positioning sleeve (7-2), a buffer pad three (7-3), a handle (7-4), a joint surface support block (7-5), a positioning pin two (7-6), an input shaft standard block (7-7), an intermediate shaft standard block (7-8), an output shaft standard block (7-9) and a sensor sensing plate (7-10), the two positioning sleeves (7-2) are mounted on the lower end surface of the base (7-1), the buffer pad three (7-3) is mounted on the lower end surface of the base (7-1), and the sensor The sensor sensing plate (7-10) is mounted on the lower end surface of the base (7-1), the handle (7-4) is mounted on both sides of the base (7-1), the joint surface support block (7-5) is mounted on the upper end surface of the base (7-1), the input shaft standard block (7-7), the intermediate shaft standard block (7-8) and the output shaft standard block (7-9) are mounted on the upper end surface of the base (7-1), the positioning pin 2 (7-6) is mounted on the upper end surface of the base (7-1), and the small value standard component (6) and the large value standard component (7) are structured.

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