CN110850291B - Testing machine for measuring stability and actual rotating speed of motor - Google Patents
Testing machine for measuring stability and actual rotating speed of motor Download PDFInfo
- Publication number
- CN110850291B CN110850291B CN201911285550.1A CN201911285550A CN110850291B CN 110850291 B CN110850291 B CN 110850291B CN 201911285550 A CN201911285550 A CN 201911285550A CN 110850291 B CN110850291 B CN 110850291B
- Authority
- CN
- China
- Prior art keywords
- cavity
- motor
- symmetrically
- lifting
- testing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/26—Devices characterised by the use of fluids
- G01P3/30—Devices characterised by the use of fluids by using centrifugal forces of fluids
Abstract
The invention discloses a testing machine for testing the stability and the actual rotating speed of a motor, which comprises a machine body, wherein a testing device for testing the rotating speed of the motor is arranged on the machine body, when the motor is required to be tested, two motors are firstly placed between clamping plates, the testing machine can test the stability and the rotating speed of the produced motor, compared with the existing motor detection device, the testing machine can simultaneously test the stability and the rotating speed, so that the practicability of the testing machine can be greatly improved, meanwhile, the testing machine can simultaneously test two groups of motors, the difference of the two groups of motors at the comparison position can be effectively obtained, and the testing result can be more obvious by comparing an experimental method.
Description
Technical Field
The invention relates to the field of motors, in particular to a tester for measuring the stability and the actual rotating speed of a motor.
Background
The motor is a device for converting electric energy into mechanical energy, and utilizes an electrified coil to generate a rotating magnetic field and act on a rotor to form magnetoelectric power rotating torque, the motor is divided into a direct current motor and an alternating current motor according to different power sources, most of the motors in an electric system are alternating current motors, the motors mainly comprise stators and rotors, the forced movement direction of electrified leads in the magnetic field is related to the current direction and the magnetic induction line direction, and the working principle of the motors is that the magnetic field acts on the current stress to enable the motors to rotate;
after the manufacturing process of the motor, the performance of the motor is often required to be tested, a traditional testing instrument can only test one item, and a general testing instrument can only test one motor independently and cannot perform a difference comparison test of the two motors.
Disclosure of Invention
The present invention is directed to a testing machine for measuring the stability and actual rotational speed of a motor, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a testing machine for testing the stability and the actual rotating speed of a motor comprises a machine body, wherein a testing device for testing the rotating speed of the motor is arranged on the machine body, the testing device comprises hydraulic cylinders which are symmetrically and fixedly arranged in the machine body in a left-right mode, hydraulic rods which are in sliding connection with the machine body are respectively and dynamically connected in each hydraulic cylinder, a rotating block is rotatably connected to one side of each hydraulic rod, a fixing port is formed in one side of each rotating block, a fluid cavity is further formed in each rotating block, soft membranes are symmetrically arranged on the upper side and the lower side of each fluid cavity, a water body is arranged in each fluid cavity, a testing plate is fixedly arranged on each hydraulic rod, sliding cavities are symmetrically arranged in the upper side and the lower side of each testing plate, three clamping grooves are respectively formed in the upper side and the lower side of the inner side wall of each sliding cavity, abutting plates which are abutted against the soft membranes, every sliding connection have in the butt joint board can with draw-in groove sliding connection's trapezoidal fixture block, trapezoidal fixture block with be connected with the little spring between the butt joint board, the side bilateral symmetry of organism have can with draw-in groove sliding connection's reset block, be equipped with the power chamber in the organism, the power chamber with be equipped with between the organism and be used for the fixing device who fixes the motor, the top side bilateral symmetry in power chamber is equipped with the lift chamber, every a lateral wall in lift chamber is equipped with respectively removes the chamber, remove the chamber lift chamber with be equipped with the verifying attachment who is used for the test motor vibration between the power chamber.
Preferably, the fixing device comprises a driving motor fixedly installed on the bottom wall of the power cavity, the driving motor is internally and dynamically connected with upper and lower side walls of the power cavity and a main shaft rotatably connected with the top surface of the machine body, a base is fixedly arranged on the top surface of the main shaft and rotatably connected with the machine body, an elliptical ring is fixedly arranged on the top surface of the machine body and slidably connected with the base, a small ring cavity and a large ring cavity are arranged in the base, four clamping plates are symmetrically and slidably connected into the inner wall of the large ring cavity and the inner wall of the small ring cavity, the clamping plates correspond to the large ring cavity or the small ring cavity, a clamping spring is connected between the large ring cavity and the small ring cavity, four top openings are symmetrically arranged on the top wall of the large ring cavity and the top wall of the small ring cavity respectively, and the clamping plates are slidably.
Preferably, the inspection device comprises a penetrating shaft which is bilaterally symmetrically and rotatably installed between the upper side wall and the lower side wall of the power cavity and between the upper side wall and the lower side wall of the lifting cavity, the penetrating shaft is connected with the main shaft through a belt pair, lifting rollers are symmetrically and fixedly arranged in the lifting cavity through the penetrating shaft, a lifting block is slidably connected in each moving cavity, the lifting block is slidably connected with the lifting rollers, an opening space is arranged in the lifting block, a vertical cavity is arranged on the upper side wall and the lower side wall of each opening space, a fixed block is slidably connected in each opening space, a return spring is connected between the fixed block and the opening space, lifting slide rods which are slidably connected with the vertical cavities are symmetrically and fixedly arranged on the upper side and the lower side of the fixed block, a cavity is arranged in the fixed block, spring cavities are symmetrically arranged on the left side wall and the right side wall of the cavity, and, the connecting spring and the limiting sliding blocks are symmetrically connected between the spring cavity in an up-and-down mode, universal heads are fixedly arranged on one side face of the connecting spring respectively, and the corresponding two universal heads are connected with a cup body in a sliding mode.
Preferably, the side view of the fixing port is hexagonal, and when the motor needs to be tested, a hexagonal sleeve with the same specification as the fixing port is sleeved on a motor shaft of the motor to be tested.
Preferably, the bottom surface of the cup body is made of rubber materials and has certain flexibility.
In conclusion, the beneficial effects of the invention are as follows: compared with the existing motor detection device, the motor stability and rotation speed detection device can simultaneously detect the stability and rotation speed, so that the practicability of the motor stability detection device can be greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of a testing machine for measuring the stability and actual rotational speed of a motor according to the present invention;
FIG. 2 is an enlarged view of a portion of the invention at A in FIG. 1;
FIG. 3 is a top view of the base of FIG. 1 rotated ninety degrees in accordance with the present invention;
FIG. 4 is a cross-sectional view taken ninety degrees from the B-B orientation of FIG. 1 in accordance with the present invention;
fig. 5 is a cross-sectional view taken along the line C-C of fig. 4 in accordance with the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The invention will now be described in detail with reference to fig. 1-5, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, front and rear directions described below correspond to the front, back, left, right, top and bottom directions of the view direction of fig. 1, fig. 1 is a front view of the apparatus of the present invention, and the directions shown in fig. 1 correspond to the front, back, left, right, top and bottom directions of the apparatus of the present invention.
Referring to fig. 1-5, an embodiment of the present invention is shown: a testing machine for testing the stability and the actual rotating speed of a motor comprises a machine body 21, wherein a testing device 101 for testing the rotating speed of the motor is arranged on the machine body 21, the testing device 101 comprises hydraulic cylinders 48 which are fixedly arranged in the machine body 21 in a bilateral symmetry manner, each hydraulic cylinder 48 is respectively and dynamically connected with a hydraulic rod 49 which is in sliding connection with the machine body 21, one side of each hydraulic rod 49 is rotatably connected with a rotating block 56, one side of each rotating block 56 is provided with a fixing port 55, a fluid cavity 57 is also arranged in each rotating block 56, the upper side and the lower side of each fluid cavity 57 are symmetrically provided with soft membranes 58, a water body is arranged in each fluid cavity 57, a testing plate 65 is fixedly arranged on each hydraulic rod 49, sliding cavities 59 are symmetrically arranged in the upper side and the lower side of each testing plate 65, the upper side and the lower side of each sliding cavity 59 are respectively provided with three clamping grooves 51, and a butt joint plate 54 which, the testing machine is characterized in that a compression spring 60 is connected between the abutting plate 54 and the sliding cavity 59, a trapezoidal fixture block 52 which can be connected with the clamping groove 51 in a sliding mode is connected in each abutting plate 54 in a sliding mode, a small spring 53 is connected between each trapezoidal fixture block 52 and the abutting plate 54, reset blocks 50 which can be connected with the clamping groove 51 in a sliding mode are symmetrically arranged on one side face of the machine body 21 in a left-right and up-down mode, a power cavity 47 is arranged in the machine body 21, a fixing device 102 used for fixing a motor is arranged between the power cavity 47 and the machine body 21, lifting cavities 22 are symmetrically arranged on the top side of the power cavity 47 in a left-right mode, a moving cavity 25 is arranged on one side wall of each lifting cavity 22, and a testing device 103 used for testing vibration of the motor is arranged among the moving cavity 25.
In addition, in one embodiment, the fixing device 102 includes a driving motor 41 fixedly installed on the bottom wall of the power cavity 47, the driving motor 41 is power-connected with a main shaft 40 rotatably connected with the upper and lower side walls of the power cavity 47 and the top surface of the machine body 21, the top surface of the main shaft 40 is fixedly provided with a base 44 rotatably connected with the machine body 21, the top surface of the machine body 21 is fixedly provided with an elliptical ring 39 slidably connected with the base 44, the base 44 is provided with a small ring cavity 42 and a large ring cavity 46, the inner wall of the large ring cavity 46 and the inner wall of the small ring cavity 42 are symmetrically and slidably connected with a total of four clamping plates 43, a clamping spring 45 is connected between each clamping plate 43 and the corresponding large ring cavity 46 or the small ring cavity 42, the top walls of the large ring cavity 46 and the small ring cavity 42 are respectively and symmetrically provided with a total of four top openings 61, and the clamping plates 43 are slidably connected with the top openings 61, firstly, the manufactured motor is placed between the clamping plates 43 in a front-back symmetrical manner, and then the driving motor 41 is turned on, so that the main shaft 40 and the base 44 are driven to rotate ninety degrees, so that the clamping plates 43 slide along the elliptical ring 39, and the clamping springs 45 push the clamping plates 43 to clamp the motor.
In addition, in one embodiment, the inspection device 103 includes a through shaft 23 which is installed between the upper and lower side walls of the power chamber 47 and the upper and lower side walls of the lifting chamber 22 in a bilaterally symmetrical manner, the through shaft 23 is connected with the main shaft 40 through a belt pair, the lifting rollers 24 are symmetrically and fixedly installed in the lifting chamber 22 through the through shaft 23, a lifting block 27 is slidably connected in each moving chamber 25, the lifting block 27 is slidably connected with the lifting rollers 24, an opening space 31 is formed in the lifting block 27, a vertical chamber 28 is formed on the upper and lower side walls of each opening space 31, a fixed block 32 is slidably connected in each opening space 31, a return spring 30 is connected between the fixed block 32 and the opening space 31, and lifting slide bars 29 slidably connected with the vertical chamber 28 are symmetrically and fixedly installed on the upper and lower sides of the fixed block 32, be equipped with cavity 36 in the fixed block 32, the left and right sides lateral wall symmetry of cavity 36 is equipped with spring chamber 33, every sliding connection has connecting spring 35 in the spring chamber 33, connecting spring 35 with longitudinal symmetry has spacing slider 34 between the spring chamber 33, connecting spring 35's a side has set firmly universal head 37 respectively, two that correspond sliding connection has cup 38 between the universal head 37, works as when main shaft 40 is rotatory ninety degrees to the drive is to run through axle 23 with lift cylinder 24 rotates, thereby drives lifter 26 with elevator 27 moves down, thereby makes fixed block 32 moves down, thereby makes the bottom surface and the motor butt that awaits measuring of cup 38, then toward add into water in the cup 38.
In addition, in one embodiment, the side view of the fixing port 55 is hexagonal, and when testing is required, a hexagonal sleeve with the same specification as the fixing port 55 is sleeved on the motor shaft of the motor to be tested.
In addition, in one embodiment, the bottom surface of the cup 38 is made of rubber, which has a certain flexibility.
In the initial state, the anchor 32 is located at the top side, and the clamp plate 43 is in a released state.
When a motor test is needed, firstly, two motors are placed between the clamping plates 43, then the driving motor 41 is opened, so as to drive the main shaft 40 and the base 44 to rotate ninety degrees, so that the clamping plates 43 slide along the elliptical rings 39, so as to push the clamping plates 43 to clamp the motors through the clamping springs 45, so that the motor shafts of the two motors to be tested are aligned with the fixing ports 55, at this time, when the main shaft 40 rotates ninety degrees, so as to drive the penetrating shaft 23 and the lifting roller 24 to rotate, so as to drive the lifting rod 26 and the lifting block 27 to move downwards, so as to drive the fixing block 32 to move downwards, so as to enable the bottom surface of the cup body 38 to be abutted against the motors to be tested, then water is added into the cup body 38, then a hexagonal sleeve with the same specification as the fixing ports 55 is sleeved on the motor shaft of the motor to be tested, then the hydraulic cylinder 48 is opened, so as, so that the motor shaft of the motor to be tested is inserted into the fixed port 55, then two motors to be tested are opened, the motor shaft of the motor to be tested can drive the rotating block 56 to rotate, water in the fluid cavity 57 generates centrifugal force with different sizes through the speed of the rotating speed, so that the flexible membrane 58 can be driven to bulge outwards, then the abutting plate 54 is driven to move upwards and downwards, the abutting plate 54 is driven to push upwards and downwards according to the different deformation degrees of the flexible membrane 58 by the trapezoidal fixture block 52, so that the trapezoidal fixture block 52 is clamped into different clamping grooves 51, then the water in the cup body 38 can be shaken out by the shaking of the motor, after the test is finished, the rotating speed can be read out according to the position of the trapezoidal fixture block 52, the vibration and the stability of the motor can be obtained according to the residual content of the water in the cup body 38, then the hydraulic cylinder 48 is opened reversely, so that the hydraulic rod, the reset block 50 is snapped into the snap slot 51 to reset the trapezoidal shaped snap 52 and the abutment plate 54 and then opened.
The invention has the beneficial effects that: compared with the existing motor detection device, the motor stability and rotation speed detection device can simultaneously detect the stability and rotation speed, so that the practicability of the motor stability detection device can be greatly improved.
The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.
Claims (3)
1. The utility model provides a be used for motor stability and actual rotational speed survey test machine, includes the organism, its characterized in that: the machine body is provided with a testing device for testing the rotating speed of a motor, the testing device comprises hydraulic cylinders which are symmetrically and fixedly arranged in the machine body in a bilateral mode, each hydraulic cylinder is respectively and dynamically connected with a hydraulic rod which is in sliding connection with the machine body, one side of each hydraulic rod is rotatably connected with a rotating block, one side of each rotating block is provided with a fixing port, a fluid cavity is further arranged in each rotating block, the upper side and the lower side of each fluid cavity are symmetrically provided with soft membranes, a water body is arranged in each fluid cavity, a testing plate is fixedly arranged on each hydraulic rod, each testing plate is symmetrically provided with a sliding cavity in the upper side and the lower side, the upper side and the lower side of the inner side wall of each sliding cavity are respectively provided with three clamping grooves, a butting plate which is butted with the soft membranes is respectively and slidably connected in each sliding cavity, a pressing spring is connected between the butting plate and the sliding cavity, a small spring is connected between the trapezoidal fixture block and the abutting plate, reset blocks which can be in sliding connection with the clamping grooves are symmetrically arranged on one side face of the machine body from left to right and up to down, a power cavity is arranged in the machine body, a fixing device for fixing a motor is arranged between the power cavity and the machine body, lifting cavities are symmetrically arranged on the top side of the power cavity from left to right, a moving cavity is respectively arranged on one side wall of each lifting cavity, and a testing device for testing the vibration of the motor is arranged among the moving cavity, the lifting cavities and the power cavity; the fixing device comprises a driving motor fixedly installed on the bottom wall of the power cavity, a main shaft rotationally connected with the upper and lower side walls of the power cavity and the top surface of the machine body is in power connection in the driving motor, a base rotationally connected with the machine body is fixedly arranged on the top surface of the main shaft, an elliptical ring slidably connected with the base is fixedly arranged on the top surface of the machine body, a small ring cavity and a large ring cavity are arranged in the base, four clamping plates are symmetrically and slidably connected in the inner wall of the large ring cavity and the inner wall of the small ring cavity, a clamping spring is connected between each clamping plate and the corresponding large ring cavity or the corresponding small ring cavity, four top openings are symmetrically arranged on the top walls of the large ring cavity and the small ring cavity respectively, and the clamping plates are slidably connected with the top openings; the inspection device comprises a penetrating shaft which is bilaterally symmetrically and rotatably arranged on the upper and lower side walls of the power cavity and between the upper and lower side walls of the lifting cavity, the penetrating shaft is connected with the main shaft through a belt pair, lifting rollers are symmetrically and fixedly arranged in the lifting cavity through the penetrating shaft, a lifting block is slidably connected in each moving cavity, the lifting blocks are slidably connected with the lifting rollers, an opening space is arranged in each lifting block, a vertical cavity is arranged on the upper and lower side wall of each opening space, a fixed block is slidably connected in each opening space, a return spring is connected between each fixed block and the opening space, lifting slide rods which are slidably connected with the vertical cavities are symmetrically and fixedly arranged on the upper and lower sides of each fixed block, a cavity is arranged in each fixed block, spring cavities are symmetrically arranged on the left and right side walls of the cavity, and a connecting spring is slidably connected in each spring cavity, the connecting spring and the limiting sliding blocks are symmetrically connected between the spring cavity in an up-and-down mode, universal heads are fixedly arranged on one side face of the connecting spring respectively, and the corresponding two universal heads are connected with a cup body in a sliding mode.
2. The machine according to claim 1, wherein: the side view of the fixed port is hexagonal, and when the motor needs to be tested, a hexagonal sleeve with the same specification as the fixed port is sleeved on a motor shaft of the motor to be tested.
3. A machine for testing the stability and actual speed of a motor as set forth in claim 2, wherein: the bottom surface of the cup body is made of rubber materials and has certain flexibility.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911285550.1A CN110850291B (en) | 2019-12-13 | 2019-12-13 | Testing machine for measuring stability and actual rotating speed of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911285550.1A CN110850291B (en) | 2019-12-13 | 2019-12-13 | Testing machine for measuring stability and actual rotating speed of motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110850291A CN110850291A (en) | 2020-02-28 |
| CN110850291B true CN110850291B (en) | 2020-06-12 |
Family
ID=69609093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911285550.1A Active CN110850291B (en) | 2019-12-13 | 2019-12-13 | Testing machine for measuring stability and actual rotating speed of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110850291B (en) |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4677885B2 (en) * | 2005-11-18 | 2011-04-27 | セイコーエプソン株式会社 | Liquid detection device and liquid storage container including the same |
| JP2011027446A (en) * | 2009-07-22 | 2011-02-10 | Murata Mfg Co Ltd | Inspection device for angular velocity sensor |
| CN103376202A (en) * | 2012-04-23 | 2013-10-30 | 襄阳南车电机技术有限公司 | Direct-current motor armature commutator dynamic pressure overspeed testing machine |
| CN104316717B (en) * | 2014-11-17 | 2017-04-12 | 吉林大学 | Voltage transformation type speed measurement device for magnetic liquid |
| CN105548880A (en) * | 2015-12-02 | 2016-05-04 | 中国电子科技集团公司第四十一研究所 | Multifunctional general motor test stand |
| CN208188143U (en) * | 2018-05-28 | 2018-12-04 | 江西力玛机电科技有限公司 | A kind of motor speed test device |
| CN209200381U (en) * | 2018-08-10 | 2019-08-02 | 烟台职业学院 | Electric Appliance Cabinet terminal fixer |
| CN208705450U (en) * | 2018-08-16 | 2019-04-05 | 上海霍兰汽车科技有限公司 | A kind of test platform that can detect multiple motors simultaneously |
| CN109163892B (en) * | 2018-09-03 | 2020-11-24 | 荆门市遥锐机电科技有限公司 | Motor rotating shaft fault monitoring system |
| CN209744117U (en) * | 2019-03-23 | 2019-12-06 | 江苏金润龙科技股份有限公司 | mobile lighthouse capable of independently generating electricity |
| CN110207812A (en) * | 2019-05-28 | 2019-09-06 | 浙江求是科教设备有限公司 | A kind of electromechanical testing platform tested automatically |
-
2019
- 2019-12-13 CN CN201911285550.1A patent/CN110850291B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110850291A (en) | 2020-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111413193A (en) | Hardness detection equipment of corrosion resistance new material structure | |
| CN107621605B (en) | Simple device for testing motor fatigue | |
| CN1592049A (en) | Movable assembly for cylinder type linear motor | |
| CN103929041B (en) | A kind of magnetic suspension permanent magnet linear motor | |
| CN210533709U (en) | Supplementary rotatory flexibility detection device of gyro wheel bearing | |
| CN208399652U (en) | A kind of direct-flow vibrating test platform | |
| CN110850291B (en) | Testing machine for measuring stability and actual rotating speed of motor | |
| CN111398821A (en) | New energy motor rotor testing device and testing method | |
| CN219694488U (en) | Civil structure anti-seismic experiment device | |
| CN111207720A (en) | Coaxiality detection tool for assembled large motor iron core and assembled machine base | |
| CN206068846U (en) | A kind of drive apparatus for the two-sided detection of circuit board | |
| CN204065114U (en) | A kind of Application of Motor Speed Detecting fixture | |
| CN215747969U (en) | Quick clamping and positioning clamp for brake disc machining | |
| CN211453871U (en) | Detection apparatus for six-phase permanent magnet synchronous motor | |
| CN207742303U (en) | Electric-examination machine for circuit board performance detection | |
| CN203316773U (en) | Drilling device for rocker arm brackets | |
| CN215640529U (en) | A steel intensity detection device for building detects | |
| CN214272168U (en) | Disconnect-type pile foundation testing arrangement | |
| CN219758442U (en) | Intensity detection device for DC motor rotor | |
| CN111457822A (en) | Automatic chucking and caliper for reinforcing bar of reading of being convenient for | |
| CN211453777U (en) | Stator and rotor high accuracy winding resistance detection device | |
| CN215719929U (en) | Flexible contact pneumatic actuator | |
| CN220455463U (en) | Chip testing device with limiting structure | |
| CN115351934B (en) | Clamping device is used in processing of concrete core | |
| CN208902407U (en) | The detection device of the disengaging torque of compressor clutch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |