Rotating speed calibrator

Abstract

The utility model relates to the technical field of rotating speed calibrators, solves the technical problem that the detection process is tedious and tedious, and particularly relates to a rotating speed calibrator which comprises a supporting table serving as a supporting foundation, and a rotating speed adjusting machine body is installed on one side of the top end of the supporting table. A maneuvering equipment adjusting and fixing assembly used for fixing maneuvering equipment is installed on the side, away from the rotating speed adjusting machine body, of the top end of the supporting table, and a power transmission assembly used in cooperation with the maneuvering equipment adjusting and fixing assembly and used for transmitting power is arranged at the top end of the supporting table. According to the utility model, due to the arrangement of the motorized equipment adjusting and fixing assembly, different probes can be fixed, and comparison is carried out according to various signals returned by the two probes, so that whether the probes are inaccurate in detection is judged; and the condition of inaccurate detection caused by the probe is judged according to different signals transmitted back by the probe and the probe.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of speed check instrument, especially to speed check instrument. BACKGROUND

[0002] Speed check instrument is a kind of professional instrument for checking and calibrating the accuracy of speed measuring equipment.It can simulate or generate stable speed signal for speed sensor, speedometer, speed generator and other equipment to measure and test, and the accuracy and reliability of the measured equipment are evaluated by comparing the measurement results of the measured equipment with the standard speed signal provided by the check instrument.However, one of the existing speed check instruments measures speed by magnetic probe or hall / photo probe, and the two probes can measure the magnetic field change between the measuring probe and gear by using eddy current effect, and the speed is determined by output frequency, so as to compare the accuracy of the check probe, but the existing resistance measurement can only detect the on-off or short circuit of coil, and cannot judge the local short circuit of coil, demagnetization of magnet or signal amplitude attenuation, and the electronic elements (such as transistor, photosensitive device) of hall / photo probe cannot be directly judged by resistance value, so the probe needs to be replaced and fixed again when different probes are compared and detected, which makes the detection process long and tedious. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model provides a speed check instrument, which solves the technical problem of long and tedious detection process and achieves the purpose of improving detection accuracy and efficiency.

[0004] To solve the above technical problems, the utility model provides the following technical scheme: a speed check instrument, comprising a support table as a support base, a speed adjusting machine body is installed on one side of the top end of the support table, a motorized equipment adjusting and fixing assembly for fixing motorized equipment is installed on the side of the top end of the support table away from the speed adjusting machine body, a power transmission assembly for transmitting power is arranged on the top end of the support table and is used in cooperation with the motorized equipment adjusting and fixing assembly, and a comparison and detection assembly for comparing and detecting speed is arranged on the top end of the support table and is used in cooperation with the power transmission assembly.

[0005] The comparison and detection assembly comprises a probe fixing cover fixedly connected to one side of the top end of the support table, probe docking grooves are formed in the end close to the speed adjusting machine body and the top end of the probe fixing cover, a speed measuring probe is fixedly connected to the inner side of the probe docking groove, a connecting rotating rod is rotatably connected to the middle of the end close to the speed adjusting machine body of the probe fixing cover, a driven gear is fixedly connected to the end close to the speed adjusting machine body of the connecting rotating rod, a speed measuring rod is fixedly connected to the end away from the driven gear of the connecting rotating rod, and a speed measuring turntable is fixedly connected to the end of the speed measuring rod.

[0006] Preferably, the probe fixing cover is provided with three probe butt joint grooves equidistantly around one end of the rotating speed adjusting machine body, and the signal output end of the speed measuring probe is connected with the signal input end of the external control terminal.

[0007] Preferably, a plurality of circular grooves are equidistantly arranged on the outer side of the speed measuring rod and the speed measuring disc, and the number of the circular grooves arranged on the outer side of the speed measuring rod is the same as that of the speed measuring disc, and the two circular grooves close to each other on the speed measuring rod and the speed measuring disc are on the same perpendicular line.

[0008] Preferably, the motorized equipment adjusting and fixing assembly comprises a supporting seat arranged at one side of the rotating speed adjusting machine body at the top end of a supporting table, height adjusting screws are screw-connected to the both sides of the bottom end of the supporting table, the top ends of the height adjusting screws are rotationally connected to the bottom end of the supporting table, clamping and fixing screws are screw-connected to the both sides of the supporting table, clamping plates are rotationally connected to the inner sides of the clamping and fixing screws at the end portions of the clamping and fixing screws, an axis supporting frame is fixedly connected to the top end of the supporting table, and transmission motors are respectively arranged in the inner sides of the two supporting seats.

[0009] Preferably, the power transmission assembly comprises a driving gear disc rotationally connected to the driving end of the transmission motor through a support, the driving gear disc is fixedly connected with a butt joint cover at one end close to the axis supporting frame, and a plurality of axis limiters are equidistantly screw-connected to the outer side of the butt joint cover.

[0010] Preferably, the driving gear disc and the driven gear disc are connected through a toothed belt, and the driving end of the transmission motor extends to the inner side of the butt joint cover.

[0011] By means of the above technical scheme, the rotating speed calibrating instrument provided by the utility model has at least the following beneficial effects:

[0012] 1. Due to the arrangement of the motorized equipment adjusting and fixing assembly, different probes can be fixed, and whether the probes have inaccurate detection can be judged by comparing the signals returned by the two probes, and the reason why the probes have inaccurate detection can be judged according to the different signals returned by the two probes.

[0013] 2. Due to the arrangement of the comparison and detection assembly and the power transmission assembly, the driving end of the motorized equipment with different specifications can be butt jointed, the power transmitted by the motorized equipment can be conducted, and whether the detection value of the rotating speed detection machine body is accurate can be obtained by sequentially detecting the power conducted by the measured motor and the power conducted by the comparison motor through the rotating speed detection machine body. BRIEF DESCRIPTION OF DRAWINGS

[0014] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The schematic embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application.

[0015] In the drawings:

[0016] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0017] Figure 2 It is the speed measuring rod installation structure schematic diagram of the utility model;

[0018] Figure 3 It is the speed measuring probe installation structure schematic diagram of the utility model

[0019] Figure 4 It is the speed measuring turntable installation structure schematic diagram of the utility model;

[0020] Figure 5 It is the speed regulating machine body installation structure schematic diagram of the utility model;

[0021] Figure 6 It is the transmission motor installation structure schematic diagram of the utility model.

[0022] In the drawings: 1, support table; 2, speed regulating machine body; 3, motorized equipment adjusting and fixing assembly; 31, support seat; 32, height adjusting screw rod; 33, clamping fixing screw rod; 34, clamping plate; 35, rotating shaft support frame; 36, transmission motor;

[0023] 4, contrast detection assembly; 41, probe fixing cover; 42, probe butt joint groove; 43, speed measuring probe; 44, link rotating rod; 45, driven toothed disc; 46, speed measuring rod; 47, speed measuring turntable;

[0024] 5, power transmission assembly; 51, driving toothed disc; 52, butt joint cover; 53, rotating shaft limiter. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0026] Embodiment 1

[0027] The existing speed verifier one is through the magnetoelectric probe or hall / optical probe to measure the speed, the two kinds of probes can use the eddy current effect, measure the magnetic field change between the probe and the gear, determine the speed through the output frequency, so as to compare the accuracy of the probe, but the existing resistance measurement can only detect the on-off or short circuit of the coil, and cannot judge the local short circuit of the coil, demagnetization of the magnet or signal amplitude attenuation, and the electronic elements (such as transistors, photosensitive devices) of the hall / optical probe cannot be directly judged by resistance value, so when comparing different probes, the probes need to be replaced and fixed again, which makes the detection process long and tedious. Please refer to Figures 1-6 The speed verifier is provided for the embodiment, which solves the technical problem of long and tedious detection process. The device comprises a support table 1 as a support base, a speed adjusting machine body 2 is installed on one side of the top end of the support table 1, a motorized equipment adjusting and fixing assembly 3 for fixing the motorized equipment is installed on the side away from the speed adjusting machine body 2 of the top end of the support table 1, a power transmission assembly 5 for transmitting power is arranged on the top end of the support table 1 and used in cooperation with the motorized equipment adjusting and fixing assembly 3, and a comparative detection assembly 4 for comparing and detecting the speed is arranged on the top end of the support table 1 and used in cooperation with the power transmission assembly 5. The motorized equipment is fixed by the motorized equipment adjusting and fixing assembly 3 and the power is transmitted by the power transmission assembly 5, and the accuracy of the probe and the cause of the error are detected by the comparative detection assembly 4.

[0028] In the use process of the existing speed verification device, due to the variety of probe specifications and the variety of detection feedback results, in order to more accurately verify and compare the probes, the verification probe and the detection probe need to be replaced and calibrated many times, which makes the detection process tedious and long. In order to solve this problem, the comparative detection assembly 4 is proposed. The comparative detection assembly 4 comprises a probe fixing cover 41 fixedly connected to one side of the top end of the support table 1, probe docking grooves 42 are formed in the end close to the speed adjusting machine body 2 and the top end of the probe fixing cover 41, speed measuring probes 43 are fixedly connected to the inner side of the probe docking grooves 42, an adapter rotating rod 44 is rotatably connected to the middle of the end close to the speed adjusting machine body 2 of the probe fixing cover 41, a driven gear disc 45 is fixedly connected to the end close to the speed adjusting machine body 2 of the adapter rotating rod 44, a speed measuring rod 46 is fixedly connected to the end away from the driven gear disc 45 of the adapter rotating rod 44, and a speed measuring turntable 47 is fixedly connected to the end of the speed measuring rod 46.

[0029] In order to be able to connect multiple verification probes, thereby improving the verification efficiency. The probe fixing cover 41 is equally spaced around the end close to the speed adjusting machine body 2 and three probe docking grooves 42 are formed, and the signal output end of the speed measuring probe 43 is connected with the signal input end of the external control terminal. By fixing the comparative probe in one probe docking groove 42, and then fixing the comparative probe in the other two probe docking grooves 42.

[0030] A plurality of circular grooves are equidistantly arranged on the outer side of the speed measuring rod 46 and the speed measuring disc 47, the number of the circular grooves on the outer side of the speed measuring rod 46 is the same as that of the circular grooves on the speed measuring disc 47, and the two circular grooves close to the speed measuring rod 46 and the speed measuring disc 47 are on the same vertical line. In order to ensure that the speed measuring probe 43 used as a reference and the circular grooves on the outer side of the speed measuring rod 46 and the speed measuring disc 47 irradiated by the speed measuring probe 43 to be checked pass through the probe at the same frequency, the standard probe and the to-be-inspected probe synchronously collect signals, directly compare the waveform differences, and eliminate the influence of environmental interference and speed fluctuation.

[0031] Embodiment 2

[0032] On the basis of Embodiment 1, Embodiment 1 solves the technical problem of a long and tedious detection process, but there is still a problem of a tedious fixing process for power different motorized equipment, in combination with Figures 1-6 As shown in the figure, the specific implementation process is as follows: in order to be able to fix different specifications of motors. The motorized equipment adjusting and fixing assembly 3 includes a support seat 31 arranged at the top end of the support table 1 on one side of the speed adjusting machine body 2, height adjusting screws 32 are screw-connected on both sides of the bottom end of the support table 1, the top end of the height adjusting screw 32 is rotationally connected with the bottom end of the support table 1, clamping and fixing screws 33 are screw-connected on both sides of the support table 1, clamping plates 34 are rotationally connected with the inner side of the support seat 31 at the end of the clamping and fixing screws 33, a shaft support frame 35 is fixedly connected with the top end of the support table 1, and two transmission motors 36 are respectively placed in the inner side of the support seat 31.

[0033] In order to be able to guide the power transmitted by motorized equipment of different specifications to the comparative detection assembly 4. The power transmission assembly 5 includes a driving gear disc 51 rotationally connected with the driving end of the transmission motor 36 through a support, the driving gear disc 51 is fixedly connected with a docking cover 52 at one end close to the shaft support frame 35, a plurality of shaft limiters 53 are equidistantly screw-connected on the outer side of the docking cover 52, the driving gear disc 51 and the driven gear disc 45 are connected through a toothed belt, and the driving end of the transmission motor 36 extends to the inner side of the docking cover 52.

[0034] It should be noted that in this document, the terms "comprise", "comprise", or any other variant thereof are intended to cover non-exclusive inclusion, so that processes, methods, articles or devices comprising a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such processes, methods, articles or devices.

[0035] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A tachometer comprising a support table (1) as a support base, characterized in that: The support table (1) top end one side is installed with the rotating speed adjusting machine body (2), the support table (1) top end is installed with the motorized equipment adjusting fixed assembly (3) for fixing motorized equipment away from the rotating speed adjusting machine body (2) one side, the support table (1) top end is provided with the power transmission assembly (5) for transmission power for with motorized equipment adjusting fixed assembly (3) cooperation uses, the support table (1) top end is provided with the contrast detection assembly (4) for with power transmission assembly (5) cooperation uses for contrast detection rotating speed; The contrast detection assembly (4) includes a probe fixing cover (41) fixedly connected to one side of the top end of the support table (1), probe docking grooves (42) are formed in the end close to the rotating speed adjusting machine body (2) and the top end of the probe fixing cover (41), speed measuring probes (43) are fixedly connected to the inner side of the probe docking grooves (42), an intermediate portion of the end of the probe fixing cover (41) close to the rotating speed adjusting machine body (2) is rotatably connected to a connecting rotating rod (44), a driven gear disc (45) is fixedly connected to the end of the connecting rotating rod (44) close to the rotating speed adjusting machine body (2), a speed measuring rod (46) is fixedly connected to the end of the connecting rotating rod (44) away from the driven gear disc (45), and a speed measuring turntable (47) is fixedly connected to the end of the speed measuring rod (46).

2. The tachometer of claim 1 wherein: The probe fixing cover (41) is equidistantly surrounded by three probe docking grooves (42) at the end close to the rotating speed adjusting machine body (2), and the signal output end of the speed measuring probe (43) is connected to the signal input end of an external control terminal.

3. The tachometer of claim 1 wherein: The speed measuring rod (46) and the speed measuring turntable (47) are both equidistantly provided with a plurality of circular grooves, the number of the circular grooves on the speed measuring rod (46) is the same as that on the speed measuring turntable (47), and the two circular grooves close to each other on the speed measuring rod (46) and the speed measuring turntable (47) are on the same perpendicular line.

4. The tachometer of claim 1 wherein: The motorized equipment adjusting fixed assembly (3) includes a support base (31) arranged at the top end of the support table (1) on the side of the rotating speed adjusting machine body (2), height adjusting screws (32) are spirally connected to the bottom end of the support table (1) on both sides, the top end of the height adjusting screw (32) is rotatably connected to the bottom end of the support table (1), clamping fixed screws (33) are spirally connected to the support table (1) on both sides, a clamping plate (34) is rotatably connected to the end of the clamping fixed screw (33) inside the support base (31), a rotating shaft support frame (35) is fixedly connected to the top end of the support table (1), and a transmission motor (36) is arranged inside each of the support bases (31).

5. The tachometer of claim 4 wherein: The power transmission assembly (5) includes a driving gear disc (51) rotatably connected to the transmission end of the transmission motor (36) through a support, the end of the driving gear disc (51) close to the rotating shaft support frame (35) is fixedly connected to a docking cover (52), and a plurality of rotating shaft limiters (53) are equidistantly and spirally connected to the outer side of the docking cover (52).

6. The tachometer of claim 5 wherein: The driving gear disc (51) and the driven gear disc (45) are connected through a toothed belt, and the transmission end of the transmission motor (36) extends to the inner side of the docking cover (52).

Images