Measuring device for measuring coaxiality of dynamometer
By designing an adjustable-length measuring device, the problems of gravity error and wasted extension rod in the coaxiality measurement of dynamometers were solved, and high-precision and stable coaxiality measurement was achieved.
Patent Information
- Application Number
- CN202520245652.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2035-02-17
AI Technical Summary
When measuring coaxiality using existing dynamometers, the heavy weight of the magnetic base leads to measurement errors, and the need for multiple extension rods of different specifications affects measurement accuracy and causes waste.
A measuring device comprising a first spindle, a second spindle, a fixed base, a telescopic rod, a support rod, and a connecting rod is designed. The overall length can be adjusted by threads to adapt to different specifications of dynamometers, and the support rod is fixed by tightening bolts to prevent displacement and improve measurement accuracy.
It enables high-precision coaxiality measurement on dynamometers of different specifications, reduces the waste of extension rods, and improves the stability and accuracy of the measuring device.
Smart Images
Figure CN223610768U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of dynamometer tooling fixture, specifically relates to a measuring device for measuring the coaxiality of dynamometer. BACKGROUND
[0002] When the dynamometer works, power is transmitted from the driving shaft to the driven shaft, and the driven shaft drives the load device to work after passing through the speed changing device; in the equipment installation, in order to reduce the vibration, the driving shaft and the driven shaft should keep coaxial; when measuring the coaxiality, the method of dial measurement is often used, that is, the magnetic table seat is adsorbed on the driving shaft, and the measuring head of the micrometer is in contact with the driven shaft; then the driving shaft is rotated, at this time, the measuring head of the micrometer rotates on the side wall of the driven shaft, and the coaxiality is measured; if the driving shaft is far away from the driven shaft, an extension rod needs to be used for measurement at this time.
[0003] But in the actual use process, the weight of the magnetic table seat is heavy, when the driving shaft rotates for measurement, when the magnetic table seat is below, a certain error will be generated due to the influence of gravity, and the measurement accuracy is affected; when different dynamometers are measured, the distance between the driving shaft and the driven shaft is also different, so a plurality of extension rods of different specifications are needed, which causes a certain waste; an urgent need for a method to solve this problem. UTILITY MODEL CONTENT
[0004] In view of the problems in the background art, the utility model provides a measuring device for measuring the coaxiality of dynamometer.
[0005] In order to achieve the above object, the utility model adopts the following technical scheme: a measuring device for measuring the coaxiality of dynamometer, comprising a first spindle, a second spindle, a fixed base, a telescopic rod, a supporting rod and a connecting rod, the fixed base is installed on the end face of the first spindle, the center of the fixed base is provided with a threaded hole A, the left end of the telescopic rod is provided with a threaded shaft, the threaded shaft is provided with a locking nut, and the left end of the threaded shaft is installed in the threaded hole A of the fixed base; the right end of the telescopic rod is provided with a boss, the upper end face of the boss is provided with a fixed hole, and the supporting rod is inserted in the fixed hole; one end of the connecting rod is connected with the supporting rod, the other end of the connecting rod is provided with a micrometer, and the measuring head top end of the micrometer is in contact with the spindle of the second spindle.
[0006] The fixed base comprises a threaded pipe and a flange; a plurality of installation grooves are uniformly distributed on the end face of the flange, and the fixed base is connected with the end face of the first spindle through the flange; the threaded pipe is fixedly connected with the flange, the center of the threaded pipe and the flange is provided with a transverse threaded hole A, and the threaded hole A is matched with the threaded shaft.
[0007] The telescopic rod comprises a threaded shaft and a boss; the boss is a cylinder, upper and lower end faces of the boss are respectively provided with clamping platforms, vertical fixing holes are arranged on the clamping platforms, and the fixing holes are through holes; a pin hole is arranged on a right end face of the boss, the pin hole is a threaded hole, the pin hole is communicated with the fixing hole, and a jacking bolt is arranged in the pin hole.
[0008] The axis of the fixing hole passes through the axis of the telescopic rod, and the fixing hole is matched with the support rod.
[0009] The outer side wall of the locking nut is hexagonal, and a threaded hole in the center of the locking nut is matched with the threaded shaft.
[0010] The dial gauges are respectively arranged at two ends of the second main shaft, and a line connecting top ends of measuring heads of the dial gauges is parallel to the axis of the first main shaft.
[0011] The utility model discloses a kind of measuring devices for measuring the coaxiality of dynamometer, the device is adjusted overall length by thread, and the application of various different specifications dynamometer can be adapted;The device fixes support rod by jacking bolt, can prevent displacement of support rod when main shaft rotates, to ensure the accuracy of measurement, improve the overall stability of dynamometer. BRIEF DESCRIPTION OF DRAWINGS
[0012] Figure 1 It is a schematic view of the utility model.
[0013] Figure 2 It is a half cut of fixed seat and telescopic rod.
[0014] Figure 3 It is the front view of fixed seat.
[0015] Figure 4 It is the side view of fixed seat.
[0016] Figure 5 It is the front view of telescopic rod.
[0017] Figure 6 It is the side view of telescopic rod.
[0018] Figure 7 It is the top view of telescopic rod.
[0019] Figure 8 It is the side view of locking nut.
[0020] In the drawing: 1, first main shaft, 2, second main shaft, 3, fixed seat, 4, telescopic rod, 5, locking nut, 6, jacking bolt, 7, support rod, 8, connecting rod, 9, dial gauge, 31, threaded tube, 32, flange, 33, installation groove, 41, threaded shaft, 42, boss, 43, fixing hole, 44, pin hole, 45, clamping platform. DETAILED DESCRIPTION
[0021] The technical solutions of the present application will be described clearly and completely in connection with the drawings of the specification. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0022] The following will be described in detail in connection with the drawings of the specification Figures 1-8 Further detailed description of the specific embodiments of the present application: A kind of measuring device for measuring the coaxiality of dynamometer, including first spindle 1, second spindle 2, fixed seat 3, telescopic rod 4, support rod 7 and connecting rod 8, the fixed seat 3 is installed on the end face of first spindle 1;The fixed seat 3 includes threaded tube 31 and flange 32;Multiple installation grooves 33 are uniformly distributed on the end face of the flange 32, and the fixed seat 3 is connected with the end face of first spindle 1 by flange 32;The installation groove 33 is adapted to the mounting hole of the end face of first spindle 1;When using, flange 32 can be installed on the end face of first spindle 1 using bolt;The threaded tube 31 is fixedly connected with the flange 32, and the center of threaded tube 31 and flange 32 is provided with transverse screw hole A, which is adapted to threaded shaft 41;
[0023] The telescopic rod 4 includes threaded shaft 41 and boss 42;The left end of the telescopic rod 4 is provided with threaded shaft 41, and the threaded shaft 41 is provided with locking nut 5, and the left end of the threaded shaft 41 is installed in the threaded hole A of the fixed seat 3;The outer wall of locking nut 5 is hexagonal, and the threaded hole in the center of locking nut 5 is adapted to threaded shaft 41;The length of the threaded shaft 41 can be freely adjusted, and when the length of the threaded shaft 41 is determined, the locking nut 5 can be rotated to make the left end face of the locking nut 5 contact with the right end face of the fixed seat 3, so as to prevent the threaded shaft 41 from loosening, thereby improving the measurement accuracy;
[0024] The right end of the telescopic rod 4 is provided with a boss 42, the boss 42 is a cylinder, the upper and lower end faces of the boss 42 are respectively provided with clamping tables 45, the clamping tables 45 are provided with vertical fixed holes 43, the fixed holes 43 are through holes, the axis of the fixed holes 43 passes through the axis of the telescopic rod 4, the fixed holes 43 are matched with the support rods 7, the upper and lower ends of the clamping tables 45 are planes, when the locking nuts 5 are tightened, tools can be clamped at the clamping tables 45 to prevent the telescopic rod 4 from rotating, the right end face of the boss 42 is provided with a pin hole 44, the pin hole 44 is a threaded hole, the pin hole 44 is communicated with the fixed hole 43, the pin hole 44 is provided with a jacking bolt 6, when the support rods 7 need to be fixed, tools can be used to rotate the jacking bolt 6, the jacking bolt 6 can jackingly fix the support rods 7 to prevent the support rods 7 from moving, when the support rods 7 need to be disassembled, the jacking bolt 6 can also be reversely rotated, the support rods 7 are inserted into the fixed holes 43, one end of the connecting rods 8 is connected with the support rods 7, the other end of the connecting rods 8 is provided with the micrometers 9, the measuring heads of the micrometers 9 are in contact with the main shafts of the second main shafts 2, the micrometers 9 are arranged at the two ends of the second main shafts 2 respectively, the connecting line between the measuring heads of the micrometers 9 is parallel to the axes of the first main shafts 1, in actual use, the connecting line between the measuring heads of the micrometers 9 cannot be completely parallel to the axes of the first main shafts 1, in specific use, firstly, the two micrometers 9 are placed on the same side of the second main shafts 2 and are set as 0 point positions, the first main shafts 1 are rotated, the micrometers 9 make circular motion on the outer side walls of the second main shafts 2, at this time, the readings of the micrometers 9 change, the coaxiality error between the first main shafts 1 and the second main shafts 2 can be obtained by observing the readings of the two micrometers 9, the coaxiality between the first main shafts 1 and the second main shafts 2 can be adjusted through the adjusting device.
[0025] The use process of the utility model is as follows: firstly, the flange 32 is installed on the end face of the first main shaft 1 by using the bolt, the left end of the threaded shaft 41 is installed in the threaded hole A of the fixed base 3, then the extension length of the threaded shaft 41 is adjusted and locked by using the locking nut 5, when the locking nut 5 is locked, tools can be clamped at the clamping tables 45 to prevent the telescopic rod 4 from rotating, then the wrench is used to rotate the locking nut 5 for locking, then the support rods 7 are inserted into the fixed holes 43 and the extension length of the support rods 7 is adjusted, after the length of the support rods 7 is adjusted, the jacking bolt 6 is installed in the pin hole 44 and rotated by using tools, the jacking bolt 6 jackingly fixes the support rods 7 to prevent the support rods 7 from moving, then the connecting rods 8 are connected to the support rods 7, the micrometers 9 are installed on the other ends of the connecting rods 8 and are in contact with the main shafts of the second main shafts 2, after installation, the first main shafts 1 are manually rotated, at this time, the micrometers 9 make circular motion on the side walls of the main shafts of the second main shafts 2, the coaxiality error between the first main shafts 1 and the second main shafts 2 can be obtained by observing the readings of the micrometers 9.
[0026] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
[0027] The part not described in detail of the present application is prior art.
Claims
1. A measuring device for measuring the coaxiality of a dynamometer, comprising a first main shaft (1), a second main shaft (2), a fixed seat (3), an extension rod (4), a support rod (7) and a connecting rod (8), characterized in that: The fixed seat (3) is installed on the end face of the first main shaft (1), the center of the fixed seat (3) is provided with a threaded hole A, the left end of the telescopic rod (4) is provided with a threaded shaft (41), the threaded shaft (41) is provided with a locking nut (5), and the left end of the threaded shaft (41) is installed in the threaded hole A of the fixed seat (3); the right end of the telescopic rod (4) is provided with a boss (42), the upper end face of the boss (42) is provided with a fixed hole (43), and the fixed hole (43) is provided with a supporting rod (7) inserted therein; one end of the connecting rod (8) is connected with the supporting rod (7), the other end of the connecting rod (8) is provided with a micrometer (9), and the measuring head top end of the micrometer (9) is in contact with the main shaft of the second main shaft (2).
2. The measuring device for measuring coaxiality of a dynamometer according to claim 1, characterized in that: The fixed seat (3) includes a threaded pipe (31) and a flange (32); a plurality of mounting grooves (33) are uniformly distributed on the end face of the flange (32), and the fixed seat (3) is connected with the end face of the first main shaft (1) through the flange (32); the threaded pipe (31) is fixedly connected with the flange (32), and the center of the threaded pipe (31) and the flange (32) is provided with a transverse threaded hole A, which is matched with the threaded shaft (41).
3. The measuring device for measuring coaxiality of a dynamometer according to claim 1, characterized in that: The telescopic rod (4) includes a threaded shaft (41) and a boss (42); the boss (42) is a cylinder, and the upper and lower end faces of the boss (42) are respectively provided with clamping tables (45), the clamping tables (45) are provided with vertical fixed holes (43), and the fixed holes (43) are through holes; the right end face of the boss (42) is provided with a pin hole (44), the pin hole (44) is a threaded hole, the pin hole (44) is in communication with the fixed hole (43), and the pin hole (44) is provided with a jacking bolt (6).
4. The measuring device for measuring coaxiality of a dynamometer according to claim 3, characterized in that: The axis of the fixed hole (43) passes through the axis of the telescopic rod (4), and the fixed hole (43) is matched with the supporting rod (7).
5. The apparatus for measuring coaxiality of a dynamometer according to claim 1, wherein: The outer side wall of the locking nut (5) is hexagonal, and the threaded hole in the center of the locking nut (5) is matched with the threaded shaft (41).
6. The apparatus for measuring coaxiality of a dynamometer according to claim 1, wherein: The micrometers (9) are respectively arranged at the two ends of the second main shaft (2), and the connecting line between the measuring head top ends of the micrometers (9) is parallel to the axis of the first main shaft (1).